Sample records for radiation oncology university

  1. E-Print Network 3.0 - academic radiation oncology Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    McMaster University Collection: Engineering 2 RADIATION ONCOLOGY FREQUENTLY ASKED QUESTIONS -2010 Summary: RADIATION ONCOLOGY FREQUENTLY ASKED QUESTIONS - 2010 Specialty...

  2. Standardizing Naming Conventions in Radiation Oncology

    SciTech Connect (OSTI)

    Santanam, Lakshmi [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO (United States); Hurkmans, Coen [Department of Radiation Oncology, Catharina Hospital, Eindhoven (Netherlands); Mutic, Sasa [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO (United States); Vliet-Vroegindeweij, Corine van [Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, PA (United States); Brame, Scott; Straube, William [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO (United States); Galvin, James [Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, PA (United States); Tripuraneni, Prabhakar [Department of Radiation Oncology, Scripps Clinic, LaJolla, CA (United States); Michalski, Jeff [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO (United States); Bosch, Walter, E-mail: wbosch@radonc.wustl.edu [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO (United States); Advanced Technology Consortium, Image-guided Therapy QA Center, St. Louis, MO (United States)

    2012-07-15T23:59:59.000Z

    Purpose: The aim of this study was to report on the development of a standardized target and organ-at-risk naming convention for use in radiation therapy and to present the nomenclature for structure naming for interinstitutional data sharing, clinical trial repositories, integrated multi-institutional collaborative databases, and quality control centers. This taxonomy should also enable improved plan benchmarking between clinical institutions and vendors and facilitation of automated treatment plan quality control. Materials and Methods: The Advanced Technology Consortium, Washington University in St. Louis, Radiation Therapy Oncology Group, Dutch Radiation Oncology Society, and the Clinical Trials RT QA Harmonization Group collaborated in creating this new naming convention. The International Commission on Radiation Units and Measurements guidelines have been used to create standardized nomenclature for target volumes (clinical target volume, internal target volume, planning target volume, etc.), organs at risk, and planning organ-at-risk volumes in radiation therapy. The nomenclature also includes rules for specifying laterality and margins for various structures. The naming rules distinguish tumor and nodal planning target volumes, with correspondence to their respective tumor/nodal clinical target volumes. It also provides rules for basic structure naming, as well as an option for more detailed names. Names of nonstandard structures used mainly for plan optimization or evaluation (rings, islands of dose avoidance, islands where additional dose is needed [dose painting]) are identified separately. Results: In addition to its use in 16 ongoing Radiation Therapy Oncology Group advanced technology clinical trial protocols and several new European Organization for Research and Treatment of Cancer protocols, a pilot version of this naming convention has been evaluated using patient data sets with varying treatment sites. All structures in these data sets were satisfactorily identified using this nomenclature. Conclusions: Use of standardized naming conventions is important to facilitate comparison of dosimetry across patient datasets. The guidelines presented here will facilitate international acceptance across a wide range of efforts, including groups organizing clinical trials, Radiation Oncology Institute, Dutch Radiation Oncology Society, Integrating the Healthcare Enterprise, Radiation Oncology domain (IHE-RO), and Digital Imaging and Communication in Medicine (DICOM).

  3. A Research Agenda for Radiation Oncology: Results of the Radiation Oncology Institute's Comprehensive Research Needs Assessment

    SciTech Connect (OSTI)

    Jagsi, Reshma, E-mail: rjagsi@med.umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Bekelman, Justin E. [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States)] [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States); Brawley, Otis W. [Department of Hematology and Oncology, Emory University, and American Cancer Society, Atlanta, Georgia (United States)] [Department of Hematology and Oncology, Emory University, and American Cancer Society, Atlanta, Georgia (United States); Deasy, Joseph O. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Le, Quynh-Thu [Department of Radiation Oncology, Stanford University, Stanford, CA (United States)] [Department of Radiation Oncology, Stanford University, Stanford, CA (United States); Michalski, Jeff M. [Department of Radiation Oncology, Washington University, St. Louis, MO (United States)] [Department of Radiation Oncology, Washington University, St. Louis, MO (United States); Movsas, Benjamin [Department of Radiation Oncology, Henry Ford Health System, Detroit, MI (United States)] [Department of Radiation Oncology, Henry Ford Health System, Detroit, MI (United States); Thomas, Charles R. [Department of Radiation Oncology, Oregon Health and Sciences University, Portland, OR (United States)] [Department of Radiation Oncology, Oregon Health and Sciences University, Portland, OR (United States); Lawton, Colleen A. [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States)] [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Lawrence, Theodore S. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)] [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Hahn, Stephen M. [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States)] [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA (United States)

    2012-10-01T23:59:59.000Z

    Purpose: To promote the rational use of scarce research funding, scholars have developed methods for the systematic identification and prioritization of health research needs. The Radiation Oncology Institute commissioned an independent, comprehensive assessment of research needs for the advancement of radiation oncology care. Methods and Materials: The research needs assessment used a mixed-method, qualitative and quantitative social scientific approach, including structured interviews with diverse stakeholders, focus groups, surveys of American Society for Radiation Oncology (ASTRO) members, and a prioritization exercise using a modified Delphi technique. Results: Six co-equal priorities were identified: (1) Identify and develop communication strategies to help patients and others better understand radiation therapy; (2) Establish a set of quality indicators for major radiation oncology procedures and evaluate their use in radiation oncology delivery; (3) Identify best practices for the management of radiation toxicity and issues in cancer survivorship; (4) Conduct comparative effectiveness studies related to radiation therapy that consider clinical benefit, toxicity (including quality of life), and other outcomes; (5) Assess the value of radiation therapy; and (6) Develop a radiation oncology registry. Conclusions: To our knowledge, this prioritization exercise is the only comprehensive and methodologically rigorous assessment of research needs in the field of radiation oncology. Broad dissemination of these findings is critical to maximally leverage the impact of this work, particularly because grant funding decisions are often made by committees on which highly specialized disciplines such as radiation oncology are not well represented.

  4. MGH RADIATION ONCOLOGY REDUCED RATE MULTI-VISIT

    E-Print Network [OSTI]

    Mootha, Vamsi K.

    MGH RADIATION ONCOLOGY REDUCED RATE MULTI-VISIT PARKING PROGRAM MGH Radiation Oncology Parking Programs enable patients undergoing radiation therapy to either self-park as close to the hospital patients currently in a treatment program; radiation therapy patients must have a minimum of two scheduled

  5. Dr. Jim Wright Acting Head, Division of Radiation Oncology

    E-Print Network [OSTI]

    Haykin, Simon

    Dr. Jim Wright Acting Head, Division of Radiation Oncology Associate Professor Department outstanding contributions to the care and treatment of cancer patients through research. Dr. Jim Wright has

  6. Radiation Oncology Medical Student Clerkship: Implementation and Evaluation of a Bi-institutional Pilot Curriculum

    SciTech Connect (OSTI)

    Golden, Daniel W., E-mail: dgolden@radonc.uchicago.edu [Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, Illinois (United States); Spektor, Alexander [Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts (United States); Rudra, Sonali; Ranck, Mark C. [Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, Illinois (United States); Krishnan, Monica S.; Jimenez, Rachel B.; Viswanathan, Akila N. [Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts (United States); Koshy, Matthew; Howard, Andrew R.; Chmura, Steven J. [Department of Radiation and Cellular Oncology, University of Chicago Pritzker School of Medicine, Chicago, Illinois (United States)

    2014-01-01T23:59:59.000Z

    Purpose: To develop and evaluate a structured didactic curriculum to complement clinical experiences during radiation oncology clerkships at 2 academic medical centers. Methods and Materials: A structured didactic curriculum was developed to teach fundamentals of radiation oncology and improve confidence in clinical competence. Curriculum lectures included: (1) an overview of radiation oncology (history, types of treatments, and basic clinic flow); (2) fundamentals of radiation biology and physics; and (3) practical aspects of radiation treatment simulation and planning. In addition, a hands-on dosimetry session taught students fundamentals of treatment planning. The curriculum was implemented at 2 academic departments in 2012. Students completed anonymous evaluations using a Likert scale to rate the usefulness of curriculum components (1 = not at all, 5 = extremely). Likert scores are reported as (median [interquartile range]). Results: Eighteen students completed the curriculum during their 4-week rotation (University of Chicago n=13, Harvard Longwood Campus n=5). All curriculum components were rated as extremely useful: introduction to radiation oncology (5 [4-5]); radiation biology and physics (5 [5-5]); practical aspects of radiation oncology (5 [4-5]); and the treatment planning session (5 [5-5]). Students rated the curriculum as ďquite usefulĒ to ďextremely usefulĒ (1) to help students understand radiation oncology as a specialty; (2) to increase student comfort with their specialty decision; and (3) to help students with their future transition to a radiation oncology residency. Conclusions: A standardized curriculum for medical students completing a 4-week radiation oncology clerkship was successfully implemented at 2 institutions. The curriculum was favorably reviewed. As a result of completing the curriculum, medical students felt more comfortable with their specialty decision and better prepared to begin radiation oncology residency.

  7. Integrating the Healthcare Enterprise in Radiation Oncology Plug and Play-The Future of Radiation Oncology?

    SciTech Connect (OSTI)

    Abdel-Wahab, May, E-mail: mwahab@med.miami.ed [Department of Radiation Oncology, Miller School of Medicine, University of Miami, Miami, Florida (United States); Rengan, Ramesh [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania (United States); Curran, Bruce [Department of Radiation Oncology, Rhode Island Hospital, Brown University, City, Rhode Island (United States); Swerdloff, Stuart [Elekta, Sunnyvale, California (United States); Miettinen, Mika [Varian Systems, Palo Alto, California (United States); Field, Colin [Cross Cancer Institute, Edmonton, Alberta (Canada); Ranjitkar, Sunita [American Society for Therapeutic Radiology and Oncology, Fairfax, Virginia (United States); Palta, Jatinder [Department of Radiation Oncology, University of Florida, Gainesville, Florida (United States); Tripuraneni, Prabhakar [Department of Radiation Oncology, Scripps Institute, La Jolla, California (United States)

    2010-02-01T23:59:59.000Z

    Purpose: To describe the processes and benefits of the integrating healthcare enterprises in radiation oncology (IHE-RO). Methods: The IHE-RO process includes five basic steps. The first step is to identify common interoperability issues encountered in radiation treatment planning and the delivery process. IHE-RO committees partner with vendors to develop solutions (integration profiles) to interoperability problems. The broad application of these integration profiles across a variety of vender platforms is tested annually at the Connectathon event. Demonstration of the seamless integration and transfer of patient data to the potential users are then presented by vendors at the public demonstration event. Users can then integrate these profiles into requests for proposals and vendor contracts by institutions. Results: Incorporation of completed integration profiles into requests for proposals can be done when purchasing new equipment. Vendors can publish IHE integration statements to document the integration profiles supported by their products. As a result, users can reference integration profiles in requests for proposals, simplifying the systems acquisition process. These IHE-RO solutions are now available in many of the commercial radiation oncology-related treatment planning, delivery, and information systems. They are also implemented at cancer care sites around the world. Conclusions: IHE-RO serves an important purpose for the radiation oncology community at large.

  8. The American Society for Radiation Oncology's 2010 Core Physics Curriculum for Radiation Oncology Residents

    SciTech Connect (OSTI)

    Xiao Ying, E-mail: ying.xiao@jefferson.edu [Thomas Jefferson University Hospital, Philadelphia, PA (United States); De Amorim Bernstein, Karen [Montefiore Medical Center, Bronx, NY (United States); Chetty, Indrin J. [Henry Ford Health System, Detroit, MI (United States); Eifel, Patricia [M. D. Anderson Cancer Center, Houston, TX (United States); Hughes, Lesley [Cooper University Hospital, Camden, NJ (United States); Klein, Eric E. [Washington University, Saint Louis, MO (United States); McDermott, Patrick [William Beaumont Hospital, Royal Oak, MI (United States); Prisciandaro, Joann [University of Michigan, Ann Arbor, MI (United States); Paliwal, Bhudatt [University of Wisconsin, Madison, WI (United States); Price, Robert A. [Fox Chase Cancer Center, Philadelphia, PA (United States); Werner-Wasik, Maria [Thomas Jefferson University Hospital, Philadelphia, PA (United States); Palta, Jatinder R. [University of Florida, Gainesville, FL (United States)

    2011-11-15T23:59:59.000Z

    Purpose: In 2004, the American Society for Radiation Oncology (ASTRO) published its first physics education curriculum for residents, which was updated in 2007. A committee composed of physicists and physicians from various residency program teaching institutions was reconvened again to update the curriculum in 2009. Methods and Materials: Members of this committee have associations with ASTRO, the American Association of Physicists in Medicine, the Association of Residents in Radiation Oncology, the American Board of Radiology (ABR), and the American College of Radiology. Members reviewed and updated assigned subjects from the last curriculum. The updated curriculum was carefully reviewed by a representative from the ABR and other physics and clinical experts. Results: The new curriculum resulted in a recommended 56-h course, excluding initial orientation. Learning objectives are provided for each subject area, and a detailed outline of material to be covered is given for each lecture hour. Some recent changes in the curriculum include the addition of Radiation Incidents and Bioterrorism Response Training as a subject and updates that reflect new treatment techniques and modalities in a number of core subjects. The new curriculum was approved by the ASTRO board in April 2010. We anticipate that physicists will use this curriculum for structuring their teaching programs, and subsequently the ABR will adopt this educational program for its written examination. Currently, the American College of Radiology uses the ASTRO curriculum for their training examination topics. In addition to the curriculum, the committee updated suggested references and the glossary. Conclusions: The ASTRO physics education curriculum for radiation oncology residents has been updated. To ensure continued commitment to a current and relevant curriculum, the subject matter will be updated again in 2 years.

  9. National Institutes of Health Funding in Radiation Oncology: A Snapshot

    SciTech Connect (OSTI)

    Steinberg, Michael; McBride, William H.; Vlashi, Erina [Department of Radiation Oncology, David Geffen School of Medicine at University of California, Los Angeles (UCLA), and Jonsson Comprehensive Cancer Center at UCLA, Los Angeles, California (United States)] [Department of Radiation Oncology, David Geffen School of Medicine at University of California, Los Angeles (UCLA), and Jonsson Comprehensive Cancer Center at UCLA, Los Angeles, California (United States); Pajonk, Frank, E-mail: fpajonk@mednet.ucla.edu [Department of Radiation Oncology, David Geffen School of Medicine at University of California, Los Angeles (UCLA), and Jonsson Comprehensive Cancer Center at UCLA, Los Angeles, California (United States)] [Department of Radiation Oncology, David Geffen School of Medicine at University of California, Los Angeles (UCLA), and Jonsson Comprehensive Cancer Center at UCLA, Los Angeles, California (United States)

    2013-06-01T23:59:59.000Z

    Currently, pay lines for National Institutes of Health (NIH) grants are at a historical low. In this climate of fierce competition, knowledge about the funding situation in a small field like radiation oncology becomes very important for career planning and recruitment of faculty. Unfortunately, these data cannot be easily extracted from the NIH's database because it does not discriminate between radiology and radiation oncology departments. At the start of fiscal year 2013 we extracted records for 952 individual grants, which were active at the time of analysis from the NIH database. Proposals originating from radiation oncology departments were identified manually. Descriptive statistics were generated using the JMP statistical software package. Our analysis identified 197 grants in radiation oncology. These proposals came from 134 individual investigators in 43 academic institutions. The majority of the grants (118) were awarded to principal investigators at the full professor level, and 122 principal investigators held a PhD degree. In 79% of the grants, the research topic fell into the field of biology, 13% in the field of medical physics. Only 7.6% of the proposals were clinical investigations. Our data suggest that the field of radiation oncology is underfunded by the NIH and that the current level of support does not match the relevance of radiation oncology for cancer patients or the potential of its academic work force.

  10. Burnout in United States Academic Chairs of Radiation Oncology Programs

    SciTech Connect (OSTI)

    Kusano, Aaron S. [Department of Radiation Oncology, University of Washington School of Medicine, Seattle, Washington (United States); Thomas, Charles R., E-mail: thomasch@ohsu.edu [Department of Radiation Medicine, Knight Cancer Institute/Oregon Health and Science University, Portland, Oregon (United States); Bonner, James A. [Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama (United States); DeWeese, Theodore L. [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins Medical Institutions, Baltimore, Maryland (United States); Formenti, Silvia C. [Department of Radiation Oncology, New York University, New York, New York (United States); Hahn, Stephen M. [Department of Radiation Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania (United States); Lawrence, Theodore S. [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Mittal, Bharat B. [Department of Radiation Oncology, Northwestern University, Chicago, Ilinois (United States)

    2014-02-01T23:59:59.000Z

    Purpose: The aims of this study were to determine the self-reported prevalence of burnout in chairs of academic radiation oncology departments, to identify factors contributing to burnout, and to compare the prevalence of burnout with that seen in other academic chair groups. Methods and Materials: An anonymous online survey was administered to the membership of the Society of Chairs of Academic Radiation Oncology Programs (SCAROP). Burnout was measured with the Maslach Burnout Inventory-Human Services Survey (MBI-HSS). Results: Questionnaires were returned from 66 of 87 chairs (76% response rate). Seventy-nine percent of respondents reported satisfaction with their current positions. Common major stressors were budget deficits and human resource issues. One-quarter of chairs reported that it was at least moderately likely that they would step down in the next 1 to 2 years; these individuals demonstrated significantly higher emotional exhaustion. Twenty-five percent of respondents met the MBI-HSS criteria for low burnout, 75% for moderate burnout, and none for high burnout. Group MBI-HSS subscale scores demonstrated a pattern of moderate emotional exhaustion, low depersonalization, and moderate personal accomplishment, comparing favorably with other specialties. Conclusions: This is the first study of burnout in radiation oncology chairs with a high response rate and using a validated psychometric tool. Radiation oncology chairs share similar major stressors to other chair groups, but they demonstrate relatively high job satisfaction and lower burnout. Emotional exhaustion may contribute to the anticipated turnover in coming years. Further efforts addressing individual and institutional factors associated with burnout may improve the relationship with work of chairs and other department members.

  11. A National Radiation Oncology Medical Student Clerkship Survey: Didactic Curricular Components Increase Confidence in Clinical Competency

    SciTech Connect (OSTI)

    Jagadeesan, Vikrant S. [Department of Radiation and Cellular Oncology, Pritzker School of Medicine, University of Chicago, Chicago, Illinois (United States); Raleigh, David R. [Department of Radiation Oncology, School of Medicine, University of CaliforniaĖSan Francisco, San Francisco, California (United States); Koshy, Matthew; Howard, Andrew R.; Chmura, Steven J. [Department of Radiation and Cellular Oncology, Pritzker School of Medicine, University of Chicago, Chicago, Illinois (United States); Golden, Daniel W., E-mail: dgolden@radonc.uchicago.edu [Department of Radiation and Cellular Oncology, Pritzker School of Medicine, University of Chicago, Chicago, Illinois (United States)

    2014-01-01T23:59:59.000Z

    Purpose: Students applying to radiation oncology residency programs complete 1 or more radiation oncology clerkships. This study assesses student experiences and perspectives during radiation oncology clerkships. The impact of didactic components and number of clerkship experiences in relation to confidence in clinical competency and preparation to function as a first-year radiation oncology resident are evaluated. Methods and Materials: An anonymous, Internet-based survey was sent via direct e-mail to all applicants to a single radiation oncology residency program during the 2012-2013 academic year. The survey was composed of 3 main sections including questions regarding baseline demographic information and prior radiation oncology experience, rotation experiences, and ideal clerkship curriculum content. Results: The survey response rate was 37% (70 of 188). Respondents reported 191 unique clerkship experiences. Of the respondents, 27% (19 of 70) completed at least 1 clerkship with a didactic component geared towards their level of training. Completing a clerkship with a didactic component was significantly associated with a respondent's confidence to function as a first-year radiation oncology resident (Wilcoxon rankĖsum P=.03). However, the total number of clerkships completed did not correlate with confidence to pursue radiation oncology as a specialty (Spearman ? P=.48) or confidence to function as a first year resident (Spearman ? P=.43). Conclusions: Based on responses to this survey, rotating students perceive that the majority of radiation oncology clerkships do not have formal didactic curricula. Survey respondents who completed a clerkship with a didactic curriculum reported feeling more prepared to function as a radiation oncology resident. However, completing an increasing number of clerkships does not appear to improve confidence in the decision to pursue radiation oncology as a career or to function as a radiation oncology resident. These results support further development of structured didactic curricula for the radiation oncology clerkship.

  12. American Society for Radiation Oncology (ASTRO) 2012 Workforce Study: The Radiation Oncologists' and Residents' Perspectives

    SciTech Connect (OSTI)

    Pohar, Surjeet, E-mail: spohar@iuhealth.org [Indiana University Health East, Indianapolis, Indiana (United States); Fung, Claire Y. [Commonwealth Newburyport Cancer Center, Newburyport, Massachusetts (United States); Hopkins, Shane [William R. Bliss Cancer Center, Ames, Iowa (United States); Miller, Robert [Mayo Clinic, Rochester, Minnesota (United States); Azawi, Samar [VA Veteran Hospital/University of California Irvine, Newport Beach, California (United States); Arnone, Anna; Patton, Caroline [ASTRO, Fairfax, Virginia (United States); Olsen, Christine [Massachusetts General Hospital, Boston, Massachusetts (United States)

    2013-12-01T23:59:59.000Z

    Purpose: The American Society for Radiation Oncology (ASTRO) conducted the 2012 Radiation Oncology Workforce Survey to obtain an up-to-date picture of the workforce, assess its needs and concerns, and identify quality and safety improvement opportunities. The results pertaining to radiation oncologists (ROs) and residents (RORs) are presented here. Methods: The ASTRO Workforce Subcommittee, in collaboration with allied radiation oncology professional societies, conducted a survey study in early 2012. An online survey questionnaire was sent to all segments of the radiation oncology workforce. Respondents who were actively working were included in the analysis. This manuscript describes the data for ROs and RORs. Results: A total of 3618 ROs and 568 RORs were surveyed. The response rate for both groups was 29%, with 1047 RO and 165 ROR responses. Among ROs, the 2 most common racial groups were white (80%) and Asian (15%), and the male-to-female ratio was 2.85 (74% male). The median age of ROs was 51. ROs averaged 253.4 new patient consults in a year and 22.9 on-treatment patients. More than 86% of ROs reported being satisfied or very satisfied overall with their career. Close to half of ROs reported having burnout feelings. There was a trend toward more frequent burnout feelings with increasing numbers of new patient consults. ROs' top concerns were related to documentation, reimbursement, and patients' health insurance coverage. Ninety-five percent of ROs felt confident when implementing new technology. Fifty-one percent of ROs thought that the supply of ROs was balanced with demand, and 33% perceived an oversupply. Conclusions: This study provides a current snapshot of the 2012 radiation oncology physician workforce. There was a predominance of whites and men. Job satisfaction level was high. However a substantial fraction of ROs reported burnout feelings. Perceptions about supply and demand balance were mixed. ROs top concerns reflect areas of attention for the healthcare sector as a whole.

  13. ASTRO's 2007 Core Physics Curriculum for Radiation Oncology Residents

    SciTech Connect (OSTI)

    Klein, Eric E. [Washington University, St. Louis, MO (United States)]. E-mail: eklein@radonc.wustl.edu; Gerbi, Bruce J. [University of Minnesota, Minneapolis, MN (United States); Price, Robert A. [Fox Chase Cancer Center, Philadelphia, PA (United States); Balter, James M. [University of Michigan, Ann Arbor, MI (United States); Paliwal, Bhudatt [University of Wisconsin, Madison, WI (United States); Hughes, Lesley [Saint Joseph Medical Center, Reading, PA (United States); Huang, Eugene [MD Anderson Cancer Center, Houston, TX (United States)

    2007-08-01T23:59:59.000Z

    In 2004, American Society for Therapeutic Radiology and Oncology (ASTRO) published a curriculum for physics education. The document described a 54-hour course. In 2006, the committee reconvened to update the curriculum. The committee is composed of physicists and physicians from various residency program teaching institutions. Simultaneously, members have associations with American Association of Physicists in Medicine, ASTRO, Association of Residents in Radiation Oncology, American Board of Radiology, and American College of Radiology. Representatives from the latter two organizations are key to provide feedback between the examining organizations and ASTRO. Subjects are based on Accreditation Council for Graduate Medical Education requirements (particles and hyperthermia), whereas the majority of subjects and appropriated hours/subject were developed by consensus. The new curriculum is 55 hours, containing new subjects, redistribution of subjects with updates, and reorganization of core topics. For each subject, learning objectives are provided, and for each lecture hour, a detailed outline of material to be covered is provided. Some changes include a decrease in basic radiologic physics, addition of informatics as a subject, increase in intensity-modulated radiotherapy, and migration of some brachytherapy hours to radiopharmaceuticals. The new curriculum was approved by the ASTRO board in late 2006. It is hoped that physicists will adopt the curriculum for structuring their didactic teaching program, and simultaneously, American Board of Radiology, for its written examination. American College of Radiology uses the ASTRO curriculum for their training examination topics. In addition to the curriculum, the committee added suggested references, a glossary, and a condensed version of lectures for a Postgraduate Year 2 resident physics orientation. To ensure continued commitment to a current and relevant curriculum, subject matter will be updated again in 2 years.

  14. An Assessment of the Current US Radiation Oncology Workforce: Methodology and Global Results of the American Society for Radiation Oncology 2012 Workforce Study

    SciTech Connect (OSTI)

    Vichare, Anushree; Washington, Raynard; Patton, Caroline; Arnone, Anna [ASTRO, Fairfax, Virginia (United States); Olsen, Christine [Massachusetts General Hospital, Boston, Massachusetts, (United States); Fung, Claire Y. [Commonwealth Newburyport Cancer Center, Newburyport, Massachusetts (United States); Hopkins, Shane [William R. Bliss Cancer Center, Ames, Iowa (United States); Pohar, Surjeet, E-mail: spohar@netzero.net [Indiana University Health Cancer Center East, Indiana University, Indianapolis, Indiana (United States)

    2013-12-01T23:59:59.000Z

    Purpose: To determine the characteristics, needs, and concerns of the current radiation oncology workforce, evaluate best practices and opportunities for improving quality and safety, and assess what we can predict about the future workforce. Methods and Materials: An online survey was distributed to 35,204 respondents from all segments of the radiation oncology workforce, including radiation oncologists, residents, medical dosimetrists, radiation therapists, medical physicists, nurse practitioners, nurses, physician assistants, and practice managers/administrators. The survey was disseminated by the American Society for Radiation Oncology (ASTRO) together with specialty societies representing other workforce segments. An overview of the methods and global results is presented in this paper. Results: A total of 6765 completed surveys were received, a response rate of 19%, and the final analysis included 5257 respondents. Three-quarters of the radiation oncologists, residents, and physicists who responded were male, in contrast to the other segments in which two-thirds or more were female. The majority of respondents (58%) indicated they were hospital-based, whereas 40% practiced in a free-standing/satellite clinic and 2% in another setting. Among the practices represented in the survey, 21.5% were academic, 25.2% were hospital, and 53.3% were private. A perceived oversupply of professionals relative to demand was reported by the physicist, dosimetrist, and radiation therapist segments. An undersupply was perceived by physician's assistants, nurse practitioners, and nurses. The supply of radiation oncologists and residents was considered balanced. Conclusions: This survey was unique as it attempted to comprehensively assess the radiation oncology workforce by directly surveying each segment. The results suggest there is potential to improve the diversity of the workforce and optimize the supply of the workforce segments. The survey also provides a benchmark for future studies, as many changes in the healthcare field exert pressure on the workforce.

  15. The universal radiative transport equation

    E-Print Network [OSTI]

    Preisendorfer, Rudolph W

    1959-01-01T23:59:59.000Z

    THE UNIVERSAL RADIATIVE TRANSPORT EQUATION Rudolph W.The Universal Radiative Transport Equation Rudolph W.The various radiative transport equations used in general

  16. A Profile of Academic Training Program Directors and Chairs in Radiation Oncology

    SciTech Connect (OSTI)

    Wilson, Lynn D., E-mail: Lynn.wilson@yale.edu [Department of Therapeutic Radiology, Yale University School of Medicine, Smilow Cancer Hospital, New Haven, Connecticut (United States); Haffty, Bruce G. [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Smith, Benjamin D. [Department of Radiation Oncology, UMDNJ-RWJMS, Cancer Institute of New Jersey, New Brunswick, New Jersey (United States)] [Department of Radiation Oncology, UMDNJ-RWJMS, Cancer Institute of New Jersey, New Brunswick, New Jersey (United States)

    2013-04-01T23:59:59.000Z

    Purpose: To identify objective characteristics and benchmarks for program leadership in academic radiation oncology. Methods and Materials: A study of the 87 Accreditation Council for Graduate Medical Education radiation oncology training program directors (PD) and their chairs was performed. Variables included age, gender, original training department, highest degree, rank, endowed chair assignment, National Institutes of Health (NIH) funding, and Hirsch index (H-index). Data were gathered from online sources such as departmental websites, NIH RePORTER, and Scopus. Results: There were a total of 87 PD. The median age was 48, and 14 (16%) were MD/PhD. A total of 21 (24%) were female, and rank was relatively equally distributed above instructor. Of the 26 professors, at least 7 (27%) were female. At least 24 (28%) were working at the institution from which they had received their training. A total of 6 individuals held endowed chairs. Only 2 PD had active NIH funding in 2012. The median H-index was 12 (range, 0-51) but the index dropped to 9 (range, 0-38) when those who served as both PD and chair were removed from the group. A total of 76 chairs were identified at the time of the study. The median age was 55, and 9 (12%) were MD/PhD. A total of 7 (9%) of the chairs were female, and rank was professor for all with the exception of 1 who was listed as ďHeadĒ and was an associate professor. Of the 76 chairs, at least 10 (13%) were working at the institution from which they received their training. There were a total of 21 individuals with endowed chairs. A total of 13 (17%) had NIH funding in 2012. The median H-index was 29 (range, 3-60). Conclusions: These data provide benchmarks for individuals and departments evaluating leadership positions in the field of academic radiation oncology. Such data are useful for evaluating leadership trends over time and comparing academic radiation oncology with other specialties.

  17. Adjuvant and Salvage Radiation Therapy After Prostatectomy: American Society for Radiation Oncology/American Urological Association Guidelines

    SciTech Connect (OSTI)

    Valicenti, Richard K., E-mail: Richard.valicenti@ucdmc.ucdavis.edu [Department of Radiation Oncology, University of California, Davis School of Medicine, Davis, California (United States); Thompson, Ian [Department of Urology, University of Texas Health Science Center at San Antonio, San Antonio, Texas (United States); Albertsen, Peter [Division of Urology, University of Connecticut Health Center, Farmington, Connecticut (United States); Davis, Brian J. [Department of Radiation Oncology, Mayo Medical School, Rochester, Minnesota (United States); Goldenberg, S. Larry [Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia (Canada); Wolf, J. Stuart [Department of Urology, University of Michigan, Ann Arbor, Michigan (United States); Sartor, Oliver [Department of Medicine and Urology, Tulane Medical School, New Orleans, Louisiana (United States); Klein, Eric [Glickman Urological Kidney Institute, Cleveland Clinic, Cleveland, Ohio (United States); Hahn, Carol [Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina (United States); Michalski, Jeff [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri (United States); Roach, Mack [Department of Radiation Oncology, University of California, San Francisco, San Francisco, California (United States); Faraday, Martha M. [Four Oaks, Inc (United States)

    2013-08-01T23:59:59.000Z

    Purpose: The purpose of this guideline was to provide a clinical framework for the use of radiation therapy after radical prostatectomy as adjuvant or salvage therapy. Methods and Materials: A systematic literature review using PubMed, Embase, and Cochrane database was conducted to identify peer-reviewed publications relevant to the use of radiation therapy after prostatectomy. The review yielded 294 articles; these publications were used to create the evidence-based guideline statements. Additional guidance is provided as Clinical Principles when insufficient evidence existed. Results: Guideline statements are provided for patient counseling, use of radiation therapy in the adjuvant and salvage contexts, defining biochemical recurrence, and conducting a restaging evaluation. Conclusions: Physicians should offer adjuvant radiation therapy to patients with adverse pathologic findings at prostatectomy (ie, seminal vesicle invastion, positive surgical margins, extraprostatic extension) and salvage radiation therapy to patients with prostate-specific antigen (PSA) or local recurrence after prostatectomy in whom there is no evidence of distant metastatic disease. The offer of radiation therapy should be made in the context of a thoughtful discussion of possible short- and long-term side effects of radiation therapy as well as the potential benefits of preventing recurrence. The decision to administer radiation therapy should be made by the patient and the multidisciplinary treatment team with full consideration of the patient's history, values, preferences, quality of life, and functional status. The American Society for Radiation Oncology and American Urological Association websites show this guideline in its entirety, including the full literature review.

  18. The Value of the Internship for Radiation Oncology Training: Results of a Survey of Current and Recent Trainees

    SciTech Connect (OSTI)

    Baker, Stephen R. [University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, NJ (United States)], E-mail: bakersr@umdnj.edu; Romero, Michelle J. M.A.; Geannette, Christian M.D.; Patel, Amish [University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, NJ (United States)

    2009-07-15T23:59:59.000Z

    Purpose: Although a 12-month clinical internship is the traditional precursor to a radiation oncology residency, the continuance of this mandated training sequence has been questioned. This study was performed to evaluate the perceptions of current radiation oncology residents with respect to the value of their internship experience. Methods and Materials: A survey was sent to all US radiation oncology residents. Each was queried about whether they considered the internship to be a necessary prerequisite for a career as a radiation oncologist and as a physician. Preferences were listed on a Likert scale (1 = not at all necessary to 5 = absolutely necessary). Results: Seventy-one percent considered the internship year mostly (Likert Scale 4) or absolutely necessary (Likert Scale 5) for their development as a radiation oncologist, whereas 19.1% answered hardly or not at all (Likert Scale 2 and 1, respectively). With respect to their collective considerations about the impact of the internship year on their development as a physician, 89% had a positive response, 5.8% had a negative response, and 4.7% had no opinion. Although both deemed the preliminary year favorably, affirmative answers were more frequent among erstwhile internal medicine interns than former transitional program interns. Conclusions: A majority of radiation oncology residents positively acknowledged their internship for their development as a specialist and an even greater majority valued it for their development as a physician. This affirmative opinion was registered more frequently by those completing an internal medicine internship compared with a transitional internship.

  19. COLUMBIA UNIVERSITY Radiation Safety Program

    E-Print Network [OSTI]

    Jia, Songtao

    COLUMBIA UNIVERSITY Radiation Safety Program Medical Center - T: 212-305-0303 F: 212-305-0318 rso-clinical@columbia by more than 50 percent. #12;COLUMBIA UNIVERSITY Radiation Safety Program Medical Center - T: 212 ________________________________________________________ ________________________________________________________ #12;COLUMBIA UNIVERSITY Radiation Safety Program Medical Center - T: 212-305-0303 F: 212-305-0318 rso-clinical@columbia

  20. Validation and Simplification of the Radiation Therapy Oncology Group Recursive Partitioning Analysis Classification for Glioblastoma

    SciTech Connect (OSTI)

    Li Jing [University of Texas MD Anderson Cancer Center, Houston, TX (United States); Wang Meihua; Won, Minhee [RTOG Statistical Center, Philadelphia, PA (United States); Shaw, Edward G. [Wake Forest University School of Medicine, Winston-Salem, NC (United States); Coughlin, Christopher [Federal Bureau of Prisons, Butner, NC (United States); Curran, Walter J. [Emory Clinic, Atlanta, GA (United States); Mehta, Minesh P., E-mail: mehta@humonc.wisc.edu [University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI (United States)

    2011-11-01T23:59:59.000Z

    Purpose: Previous recursive partitioning analysis (RPA) of patients with malignant glioma (glioblastoma multiforme [GBM] and anaplastic astrocytoma [AA]) produced six prognostic groups (I-VI) classified by six factors. We sought here to determine whether the classification for GBM could be improved by using an updated Radiation Therapy Oncology Group (RTOG) GBM database excluding AA and by considering additional baseline variables. Methods and Materials: The new analysis considered 42 baseline variables and 1,672 GBM patients from the expanded RTOG glioma database. Patients receiving radiation only were excluded such that all patients received radiation+carmustine. 'Radiation dose received' was replaced with 'radiation dose assigned.' The new RPA models were compared with the original model by applying them to a test dataset comprising 488 patients from six other RTOG trials. Fitness of the original and new models was evaluated using explained variation. Results: The original RPA model explained more variations in survival in the test dataset than did the new models (20% vs. 15%) and was therefore chosen for further analysis. It was reduced by combining Classes V and VI to produce three prognostic classes (Classes III, IV, and V+VI), as Classes V and VI had indistinguishable survival in the test dataset. The simplified model did not further improve performance (explained variation 18% vs. 20%) but is easier to apply because it involves only four variables: age, performance status, extent of resection, and neurologic function. Applying this simplified model to the updated GBM database resulted in three distinct classes with median survival times of 17.1, 11.2, and 7.5 months for Classes III, IV, and V+VI, respectively. Conclusions: The final model, the simplified original RPA model combining Classes V and VI, resulted in three distinct prognostic groups defined by age, performance status, extent of resection, and neurologic function. This classification will be used in future RTOG GBM trials.

  1. RADIATION SAFETY MANUAL 2012 RICE UNIVERSITY 1

    E-Print Network [OSTI]

    Natelson, Douglas

    RADIATION SAFETY MANUAL 2012 RICE UNIVERSITY 1 Rice University Radiation Safety Manual Environmental Health and Safety MS 123 P.O. Box 1892 Houston, TX 77251-1892 February 2013 #12;RADIATION SAFETY MANUAL 2012 RICE UNIVERSITY 2 INTRODUCTION The goal of the Radiation Safety Manual is to assist lab

  2. RADIATION SAFETY MANUAL 2014 RICE UNIVERSITY 1

    E-Print Network [OSTI]

    Natelson, Douglas

    RADIATION SAFETY MANUAL 2014 RICE UNIVERSITY 1 Rice University Radiation Safety Manual Environmental Health and Safety MS 123 P.O. Box 1892 Houston, TX 77251-1892 January 2014 #12;RADIATION SAFETY MANUAL 2014 RICE UNIVERSITY 2 INTRODUCTION The goal of the Radiation Safety Manual is to assist lab

  3. E-Print Network 3.0 - accelerator applications university Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    university Page: << < 1 2 3 4 5 > >> 1 The Application of Radiation and Particle Beams from Laser Plasma Wakefield Accelerators to Oncology Summary: The Application of...

  4. Quality Control Quantification (QCQ): A Tool to Measure the Value of Quality Control Checks in Radiation Oncology

    SciTech Connect (OSTI)

    Ford, Eric C., E-mail: eford@uw.edu [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University, Baltimore, Maryland (United States); Terezakis, Stephanie; Souranis, Annette; Harris, Kendra [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University, Baltimore, Maryland (United States)] [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University, Baltimore, Maryland (United States); Gay, Hiram; Mutic, Sasa [Department of Radiation Oncology, Washington University, St. Louis, Missouri (United States)] [Department of Radiation Oncology, Washington University, St. Louis, Missouri (United States)

    2012-11-01T23:59:59.000Z

    Purpose: To quantify the error-detection effectiveness of commonly used quality control (QC) measures. Methods: We analyzed incidents from 2007-2010 logged into a voluntary in-house, electronic incident learning systems at 2 academic radiation oncology clinics. None of the incidents resulted in patient harm. Each incident was graded for potential severity using the French Nuclear Safety Authority scoring scale; high potential severity incidents (score >3) were considered, along with a subset of 30 randomly chosen low severity incidents. Each report was evaluated to identify which of 15 common QC checks could have detected it. The effectiveness was calculated, defined as the percentage of incidents that each QC measure could detect, both for individual QC checks and for combinations of checks. Results: In total, 4407 incidents were reported, 292 of which had high-potential severity. High- and low-severity incidents were detectable by 4.0 {+-} 2.3 (mean {+-} SD) and 2.6 {+-} 1.4 QC checks, respectively (P<.001). All individual checks were less than 50% sensitive with the exception of pretreatment plan review by a physicist (63%). An effectiveness of 97% was achieved with 7 checks used in combination and was not further improved with more checks. The combination of checks with the highest effectiveness includes physics plan review, physician plan review, Electronic Portal Imaging Device-based in vivo portal dosimetry, radiation therapist timeout, weekly physics chart check, the use of checklists, port films, and source-to-skin distance checks. Some commonly used QC checks such as pretreatment intensity modulated radiation therapy QA do not substantially add to the ability to detect errors in these data. Conclusions: The effectiveness of QC measures in radiation oncology depends sensitively on which checks are used and in which combinations. A small percentage of errors cannot be detected by any of the standard formal QC checks currently in broad use, suggesting that further improvements are needed. These data require confirmation with a broader incident-reporting database.

  5. COLUMBIA UNIVERSITY PREGNANCY POLICY FOR RADIATION WORKERS

    E-Print Network [OSTI]

    Jia, Songtao

    COLUMBIA UNIVERSITY PREGNANCY POLICY FOR RADIATION WORKERS POLICY: Under applicable regulations and Federal statutes (2), it is the policy of the Columbia University to limit the radiation dose (3). Further, it is the policy of the Columbia University to provide counseling and education

  6. Standing on the Shoulders of Giants: Results From the Radiation Oncology Academic Development and Mentorship Assessment Project (ROADMAP)

    SciTech Connect (OSTI)

    Holliday, Emma B. [The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Jagsi, Reshma [The University of Michigan, Ann Arbor, Michigan (United States); Thomas, Charles R. [Oregon Health Science Center Knight Cancer Institute, Portland, Oregon (United States); Wilson, Lynn D. [Department of Therapeutic Radiology, Yale University School of Medicine, Yale Cancer Center, New Haven, Connecticut (United States); Fuller, Clifton D., E-mail: cdfuller@mdanderson.org [The University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Oregon Health Science Center Knight Cancer Institute, Portland, Oregon (United States)

    2014-01-01T23:59:59.000Z

    Purpose: To analyze survey information regarding mentorship practices and cross-correlate the results with objective metrics of academic productivity among academic radiation oncologists at US Accreditation Council for Graduate Medical Education (ACGME)-accredited residency training programs. Methods and Materials: An institutional review board-approved survey for the Radiation Oncology Academic Development and Mentorship Assessment Project (ROADMAP) was sent to 1031 radiation oncologists employed at an ACGME-accredited residency training program and administered using an international secure web application designed exclusively to support data capture for research studies. Data collected included demographics, presence of mentorship, and the nature of specific mentoring activities. Productivity metrics, including number of publications, number of citations, h-index, and date of first publication, were collected for each survey respondent from a commercially available online database, and m-index was calculated. Results: A total of 158 academic radiation oncologists completed the survey, 96 of whom reported having an academic/scientific mentor. Faculty with a mentor had higher numbers of publications, citations, and h- and m-indices. Differences in gender and race/ethnicity were not associated with significant differences in mentorship rates, but those with a mentor were more likely to have a PhD degree and were more likely to have more time protected for research. Bivariate fit regression modeling showed a positive correlation between a mentor's h-index and their mentee's h-index (R{sup 2} = 0.16; P<.001). Linear regression also showed significant correlates of higher h-index, in addition to having a mentor (P=.001), included a longer career duration (P<.001) and fewer patients in treatment (P=.02). Conclusions: Mentorship is widely believed to be important to career development and academic productivity. These results emphasize the importance of identifying and striving to overcome potential barriers to effective mentorship.

  7. Results of the 2012-2013 Association of Residents in Radiation Oncology (ARRO) Job Search and Career Planning Survey of Graduating Residents in the United States

    SciTech Connect (OSTI)

    Mattes, Malcolm D., E-mail: mdm9007@nyp.org [Department of Radiation Oncology, New York Methodist Hospital, Brooklyn, New York (United States); Kharofa, Jordan [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin (United States); Zeidan, Youssef H. [Department of Radiation Oncology, Stanford University, Stanford, California (United States); Tung, Kaity [Department of Radiation Oncology, New York Methodist Hospital, Brooklyn, New York (United States); Gondi, Vinai [Department of Radiation Oncology, University of Wisconsin Comprehensive Cancer Center, Madison, Wisconsin (United States); Department of Radiation Oncology, Central Dupage Hospital Cancer Center, Warrenville, Illinois (United States); Golden, Daniel W. [Department of Radiation Oncology, Pritzker School of Medicine, University of Chicago, Chicago, Illinois (United States)

    2014-01-01T23:59:59.000Z

    Purpose/Objective(s): To determine the timeline used by postgraduate year (PGY)-5 radiation oncology residents during the job application process and the factors most important to them when deciding on a first job. Methods and Materials: In 2012 and 2013, the Association of Residents in Radiation Oncology conducted a nationwide electronic survey of PGY-5 radiation oncology residents in the United States during the final 2 months of their training. Descriptive statistics are reported. In addition, subgroup analysis was performed. Results: Surveys were completed by 180 of 314 residents contacted. The median time to start networking for the purpose of employment was January PGY-4; to start contacting practices, complete and upload a curriculum vitae to a job search website, and use the American Society of Radiation Oncology Career Center was June PGY-4; to obtain letters of recommendation was July PGY-5; to start interviewing was August PGY-5; to finish interviewing was December PGY-5; and to accept a contract was January PGY-5. Those applying for a community position began interviewing at an earlier average time than did those applying for an academic position (P=.04). The most important factors to residents when they evaluated job offers included (in order from most to least important) a collegial environment, geographic location, emphasis on best patient care, quality of support staff and facility, and multidisciplinary approach to patient care. Factors that were rated significantly different between subgroups based on the type of position applied for included adequate mentoring, dedicated research time, access to clinical trials, amount of time it takes to become a partner, geographic location, size of group, starting salary, and amount of vacation and days off. Conclusions: The residents' perspective on the job application process over 2 years is documented to provide a resource for current and future residents and employers to use.

  8. The Impact of New Technologies on Radiation Oncology Events and Trends in the Past Decade: An Institutional Experience

    SciTech Connect (OSTI)

    Hunt, Margie A., E-mail: huntm@mskcc.org [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Pastrana, Gerri [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Amols, Howard I. [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Killen, Aileen [Quality of Care Initiative, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Quality of Care Initiative, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Alektiar, Kaled [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)

    2012-11-15T23:59:59.000Z

    Purpose: To review the type and frequency of patient events from external-beam radiotherapy over a time period sufficiently long to encompass significant technology changes. Methods and Materials: Ten years of quality assurance records from January 2001 through December 2010 were retrospectively reviewed to determine the frequency of events affecting patient treatment from four radiation oncology process steps: simulation, treatment planning, data entry/transfer, and treatment delivery. Patient events were obtained from manual records and, from May 2007 onward, from an institution-wide database and reporting system. Events were classified according to process step of origination and segregated according to the most frequently observed event types. Events from the institution-wide database were evaluated to determine time trends. Results: The overall event rate was 0.93% per course of treatment, with a downward trend over time led by a decrease in treatment delivery events. The frequency of certain event types, particularly in planning and treatment delivery, changed significantly over the course of the study, reflecting technologic and process changes. Treatments involving some form of manual intervention carried an event risk four times higher than those relying heavily on computer-aided design and delivery. Conclusions: Although the overall event rate was low, areas for improvement were identified, including manual calculations and data entry, late-day treatments, and staff overreliance on computer systems. Reducing the incidence of pretreatment events is of particular importance because these were more likely to occur several times before detection and were associated with larger dosimetric impact. Further improvements in quality assurance systems and reporting are imperative, given the advent of electronic charting, increasing reliance on computer systems, and the potentially severe consequences that can arise from mistakes involving complex intensity-modulated or image-guided treatments.

  9. Impact of Ultrahigh Baseline PSA Levels on Biochemical and Clinical Outcomes in Two Radiation Therapy Oncology Group Prostate Clinical Trials

    SciTech Connect (OSTI)

    Rodrigues, George, E-mail: george.rodrigues@lhsc.on.c [Department of Oncology, University of Western Ontario, London, Ontario (Canada); Bae, Kyounghwa [Department of Statistics, Radiation Therapy Oncology Group, Philadelphia, Pennsylvania (United States); Roach, Mack [Department of Radiation Oncology, University of California San Francisco, San Francisco, California (United States); Lawton, Colleen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin (United States); Donnelly, Bryan [Department of Surgical Oncology, University of Calgary, Calgary, Alberta (Canada); Grignon, David [Department of Pathology, Indiana Pathology Institute, Indianapolis, Indiana (United States); Hanks, Gerald [Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania (United States); Porter, Arthur [Department of Oncology, McGill University Health Centre, Montreal, Quebec (Canada); Lepor, Herbert [Department of Urology, NY University Langone Medical Center, New York, New York (United States); Sandler, Howard [Department of Radiation Oncology, Cedars-Sinai Medical Center, Los Angeles, California (United States)

    2011-06-01T23:59:59.000Z

    Purpose: To assess ultrahigh (UH; prostate-specific antigen [PSA]levels {>=}50 ng/ml) patient outcomes by comparison to other high-risk patient outcomes and to identify outcome predictors. Methods and Materials: Prostate cancer patients (PCP) from two Phase III Radiation Therapy Oncology Group clinical trials (studies 9202 and 9413) were divided into two groups: high-risk patients with and without UH baseline PSA levels. Predictive variables included age, Gleason score, clinical T stage, Karnofsky performance score, and treatment arm. Outcomes included overall survival (OS), distant metastasis (DM), and biochemical failure (BF). Unadjusted and adjusted hazard ratios (HRs) were calculated using either the Cox or Fine and Gray's regression model with associated 95% confidence intervals (CI) and p values. Results: There were 401 patients in the UH PSA group and 1,792 patients in the non-UH PSA PCP group of a total of 2,193 high-risk PCP. PCP with UH PSA were found to have inferior OS (HR, 1.19; 95% CI, 1.02-1.39, p = 0.02), DM (HR, 1.51; 95% CI, 1.19-1.92; p = 0.0006), and BF (HR, 1.50; 95% CI, 1.29-1.73; p < 0.0001) compared to other high-risk PCP. In the UH cohort, PSA level was found to be a significant factor for the risk of DM (HR, 1.01; 95% CI, 1.001-1.02) but not OS and BF. Gleason grades of 8 to 10 were found to consistently predict for poor OS, DM, and BF outcomes (with HR estimates ranging from 1.41-2.36) in both the high-risk cohort and the UH cohort multivariable analyses. Conclusions: UH PSA levels at diagnosis are related to detrimental changes in OS, DM, and BF. All three outcomes can be modeled by various combinations of all predictive variables tested.

  10. Planck's Radiation Law in the Quantized Universe

    E-Print Network [OSTI]

    Rainer Collier

    2014-09-15T23:59:59.000Z

    Physical research looks for clues to quantum properties of the gravitational field. On the basis of the common Schr\\"odinger theory, a simple model of the quantization of a Friedmann universe comprising dust and radiation is investigated. With regard to energy quantization, the result suggests a universal limitation of the energy spacing between neighbouring quantum states by the Planck energy. Applied to black-body radiation, a modified Planck radiation law follows. If this could be verified in the laboratory, it would provide a direct hint at quantum properties of the space-time manifold.

  11. American Society for Radiation Oncology (ASTRO) and American College of Radiology (ACR) Practice Guideline for the Performance of High-Dose-Rate Brachytherapy

    SciTech Connect (OSTI)

    Erickson, Beth A. [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Demanes, D. Jeffrey [Department of Radiation Oncology , University of California, Los Angeles, CA (United States); Ibbott, Geoffrey S. [Radiological Physics Center, MD Anderson Cancer Center, Houston, TX (United States); Hayes, John K. [Gamma West Brachytherapy, Salt Lake City, UT (United States); Hsu, I-Chow J. [Department of Radiation Oncology, University of California San Francisco, San Francisco, CA (United States); Morris, David E. [Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC (United States); Rabinovitch, Rachel A. [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Tward, Jonathan D. [Department of Radiation Oncology, Huntsman Cancer Institute, Salt Lake City, UT (United States); Rosenthal, Seth A. [Radiation Oncology Centers, Radiological Associates of Sacramento, Sacramento, CA (United States)

    2011-03-01T23:59:59.000Z

    High-Dose-Rate (HDR) brachytherapy is a safe and efficacious treatment option for patients with a variety of different malignancies. Careful adherence to established standards has been shown to improve the likelihood of procedural success and reduce the incidence of treatment-related morbidity. A collaborative effort of the American College of Radiology (ACR) and American Society for Therapeutic Radiation Oncology (ASTRO) has produced a practice guideline for HDR brachytherapy. The guideline defines the qualifications and responsibilities of all the involved personnel, including the radiation oncologist, physicist and dosimetrists. Review of the leading indications for HDR brachytherapy in the management of gynecologic, thoracic, gastrointestinal, breast, urologic, head and neck, and soft tissue tumors is presented. Logistics with respect to the brachytherapy implant procedures and attention to radiation safety procedures and documentation are presented. Adherence to these practice guidelines can be part of ensuring quality and safety in a successful HDR brachytherapy program.

  12. Older Age Predicts Decreased Metastasis and Prostate Cancer-Specific Death for Men Treated With Radiation Therapy: Meta-Analysis of Radiation Therapy Oncology Group Trials

    SciTech Connect (OSTI)

    Hamstra, Daniel A., E-mail: dhamm@umich.edu [University of Michigan, Ann Arbor, Michigan (United States); Bae, Kyounghwa [Radiation Therapy Oncology Group, Philadelphia, Pennsylvania (United States); Pilepich, Miljenko V. [UCLA Medical Center, Los Angeles, California (United States); Hanks, Gerald E. [Fox Chase Cancer Center, Philadelphia, Pennsylvania (United States); Grignon, David J. [Indiana University-Purdue University Indianapolis, Indiana (United States); McGowan, David G. [Cross Cancer Institute, Edmonton, Alberta (Canada); Roach, Mack [UCSF, San Francisco, California (United States); Lawton, Colleen [Medical College of Wisconsin, Milwaukee, Wisconsin (United States); Lee, R. Jeffrey [Intermountain Medical Center, Salt Lake City, Utah (United States); Sandler, Howard [Cedars-Sinai Medical Center, Los Angeles, California (United States)

    2011-12-01T23:59:59.000Z

    Purpose: The impact of age on prostate cancer (PCa) outcome has been controversial; therefore, we analyzed the effect of age on overall survival (OS), distant metastasis, prostate cancer-specific death (PCSD), and nonprostate cancer death (NPCD) on patients with locally advanced PCa. Methods and Materials: Patients who participated in four Radiation Therapy Oncology Group (RTOG) phase III trials, 8531, 8610, 9202, and 9413, were studied. Cox proportional hazards regression was used for OS analysis, and cumulative events analysis with Fine and Gray's regression was used for analyses of metastasis, PCSD, and NPCD. Results: Median follow-up of 4,128 patients with median age of 70 (range, 43-88 years) was 7.3 years. Most patients had high-risk disease: cT3 to cT4 (54%) and Gleason scores (GS) of 7 (45%) and 8 to 10 (27%). Older age ({<=}70 vs. >70 years) predicted for decreased OS (10-year rate, 55% vs. 41%, respectively; p < 0.0001) and increased NPCD (10-year rate, 28% vs. 46%, respectively; p < 0.0001) but decreased metastasis (10-year rate, 27% vs. 20%, respectively; p < 0.0001) and PCSD (10-year rate, 18% vs. 14%, respectively; p < 0.0001). To account for competing risks, outcomes were analyzed in 2-year intervals, and age-dependent differences in metastasis and PCSD persisted, even in the earliest time periods. When adjusted for other covariates, an age of >70 years remained associated with decreased OS (hazard ratio [HR], 1.56 [95% confidence interval [CI], 1.43-1.70] p < 0.0001) but with decreased metastasis (HR, 0.72 [95% CI, 0.63-0.83] p < 0.0001) and PCSD (HR, 0.78 [95% CI, 0.66-0.92] p < 0.0001). Finally, the impact of the duration of androgen deprivation therapy as a function of age was evaluated. Conclusions: These data support less aggressive PCa in older men, independent of other clinical features. While the biological underpinning of this finding remains unknown, stratification by age in future trials appears to be warranted.

  13. Factors that Determine Academic Versus Private Practice Career Interest in Radiation Oncology Residents in the United States: Results of a Nationwide Survey

    SciTech Connect (OSTI)

    Chang, Daniel T., E-mail: dtchang@stanford.edu [Department of Radiation Oncology, Stanford University, Stanford, California (United States); Shaffer, Jenny L. [Department of Radiation Oncology, Stanford University, Stanford, California (United States); Haffty, Bruce G. [Department of Radiation Oncology, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick, New Jersey (United States); Wilson, Lynn D. [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut (United States)

    2013-11-01T23:59:59.000Z

    Purpose: To determine what factors US radiation oncology residents consider when choosing academic or nonacademic careers. Methods and Materials: A 20-question online survey was developed and sent to all US radiation oncology residents to assess factors that influence their career interest. Residents were asked to rate their interest in academics (A) versus private practice (PP) on a 0 (strong interest in A) to 100 (strong interest in PP) scale. Responses were classified as A (0-30), undecided (40-60), and PP (70-100). Residents were also asked to rank 10 factors that most strongly influenced their career interest. Results: Three hundred thirty-one responses were collected, of which 264 were complete and form the basis for this analysis. Factors that correlated with interest in A included having a PhD (P=.018), postgraduate year level (P=.0006), research elective time (P=.0003), obtaining grant funding during residency (P=.012), and number of publications before residency (P=.0001), but not number of abstracts accepted in the past year (P=.65) or publications during residency (P=.67). The 3 most influential factors for residents interested in A were: (1) baseline interest before residency; (2) academic role models; and (3) research opportunities during residency. The 3 most influential factors for residents interested in PP were: (1) baseline interest before residency; (2) academic role models; and (3) academic pressure and obligations. Conclusions: Interest in A correlated with postgraduate year level, degree, and research time during residency. Publications before but not during residency correlated with academic interest, and baseline interest was the most influential factor. These data can be used by residency program directors to better understand what influences residents' career interest.

  14. RADIATION RESEARCH 165, 240247 (2006) 0033-7587/06 $15.00

    E-Print Network [OSTI]

    Rocke, David M.

    240 RADIATION RESEARCH 165, 240­247 (2006) 0033-7587/06 $15.00 2006 by Radiation Research Society of the Effects of Low-Dose Ionizing Radiation in Radiation Therapy Patients Joerg Lehmann,a,b,1 Robin L. Stern­Lawrence Livermore National Laboratory, Livermore, California; b Department of Radiation Oncology, University

  15. Radiation-Induced Carcinogenesis: Mechanistically Based Differences between Gamma-Rays and Neutrons, and

    E-Print Network [OSTI]

    Brenner, David Jonathan

    Radiation-Induced Carcinogenesis: Mechanistically Based Differences between Gamma-Rays and Neutrons of Radiation Oncology, The University of Texas Medical Branch, Galveston, Texas, United States of America Abstract Different types of ionizing radiation produce different dependences of cancer risk on radiation

  16. A Comprehensive Quality Assurance Program for Personnel and Procedures in Radiation Oncology: Value of Voluntary Error Reporting and Checklists

    SciTech Connect (OSTI)

    Kalapurakal, John A., E-mail: j-kalapurakal@northwestern.edu [Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States); Zafirovski, Aleksandar; Smith, Jeffery; Fisher, Paul; Sathiaseelan, Vythialingam [Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States)] [Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States); Barnard, Cynthia [Department of Quality Strategies, Northwestern Memorial Hospital, Chicago, Illinois (United States)] [Department of Quality Strategies, Northwestern Memorial Hospital, Chicago, Illinois (United States); Rademaker, Alfred W. [Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States)] [Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States); Rave, Nick [Department of Physicians Services, Northwestern Memorial Hospital, Chicago, Illinois (United States)] [Department of Physicians Services, Northwestern Memorial Hospital, Chicago, Illinois (United States); Mittal, Bharat B. [Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States)] [Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Chicago, Illinois (United States)

    2013-06-01T23:59:59.000Z

    Purpose: This report describes the value of a voluntary error reporting system and the impact of a series of quality assurance (QA) measures including checklists and timeouts on reported error rates in patients receiving radiation therapy. Methods and Materials: A voluntary error reporting system was instituted with the goal of recording errors, analyzing their clinical impact, and guiding the implementation of targeted QA measures. In response to errors committed in relation to treatment of the wrong patient, wrong treatment site, and wrong dose, a novel initiative involving the use of checklists and timeouts for all staff was implemented. The impact of these and other QA initiatives was analyzed. Results: From 2001 to 2011, a total of 256 errors in 139 patients after 284,810 external radiation treatments (0.09% per treatment) were recorded in our voluntary error database. The incidence of errors related to patient/tumor site, treatment planning/data transfer, and patient setup/treatment delivery was 9%, 40.2%, and 50.8%, respectively. The compliance rate for the checklists and timeouts initiative was 97% (P<.001). These and other QA measures resulted in a significant reduction in many categories of errors. The introduction of checklists and timeouts has been successful in eliminating errors related to wrong patient, wrong site, and wrong dose. Conclusions: A comprehensive QA program that regularly monitors staff compliance together with a robust voluntary error reporting system can reduce or eliminate errors that could result in serious patient injury. We recommend the adoption of these relatively simple QA initiatives including the use of checklists and timeouts for all staff to improve the safety of patients undergoing radiation therapy in the modern era.

  17. A Phase 3 Trial of Whole Brain Radiation Therapy and Stereotactic Radiosurgery Alone Versus WBRT and SRS With Temozolomide or Erlotinib for Non-Small Cell Lung Cancer and 1 to 3 Brain Metastases: Radiation Therapy Oncology Group 0320

    SciTech Connect (OSTI)

    Sperduto, Paul W., E-mail: psperduto@mropa.com [Metro MN CCOP, Minneapolis, Minnesota (United States); Wang, Meihua [RTOG Statistical Center, Philadelphia, Pennsylvania (United States)] [RTOG Statistical Center, Philadelphia, Pennsylvania (United States); Robins, H. Ian [University of Wisconsin Medical School Cancer Center, Madison, Wisconsin (United States)] [University of Wisconsin Medical School Cancer Center, Madison, Wisconsin (United States); Schell, Michael C. [Wilmot Cancer Center, University of Rochester, Rochester, New York (United States)] [Wilmot Cancer Center, University of Rochester, Rochester, New York (United States); Werner-Wasik, Maria [Thomas Jefferson University, Philadelphia, Pennsylvania (United States)] [Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Komaki, Ritsuko [University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Souhami, Luis [McGill University, Montreal, Quebec (Canada)] [McGill University, Montreal, Quebec (Canada); Buyyounouski, Mark K. [Fox Chase Cancer Center, Philadelphia, Pennsylvania (United States)] [Fox Chase Cancer Center, Philadelphia, Pennsylvania (United States); Khuntia, Deepak [University of Wisconsin Hospital, Madison, Wisconsin (United States)] [University of Wisconsin Hospital, Madison, Wisconsin (United States); Demas, William [Akron City Hospital, Akron, Ohio (United States)] [Akron City Hospital, Akron, Ohio (United States); Shah, Sunjay A. [Christiana Care Health Services, Inc, CCOP, Newark, Delaware (United States)] [Christiana Care Health Services, Inc, CCOP, Newark, Delaware (United States); Nedzi, Lucien A. [University of Texas Southwestern Medical School, Dallas, Texas (United States)] [University of Texas Southwestern Medical School, Dallas, Texas (United States); Perry, Gad [The Ottawa Hospital Cancer Centre, Ottawa, Ontario (Canada)] [The Ottawa Hospital Cancer Centre, Ottawa, Ontario (Canada); Suh, John H. [Cleveland Clinic Foundation, Cleveland, Ohio (United States)] [Cleveland Clinic Foundation, Cleveland, Ohio (United States); Mehta, Minesh P. [Northwestern Memorial Hospital, Chicago, Illinois (United States)] [Northwestern Memorial Hospital, Chicago, Illinois (United States)

    2013-04-01T23:59:59.000Z

    Background: A phase 3 Radiation Therapy Oncology Group (RTOG) study subset analysis demonstrated improved overall survival (OS) with the addition of stereotactic radiosurgery (SRS) to whole brain radiation therapy (WBRT) in non-small cell lung cancer (NSCLC) patients with 1 to 3 brain metastases. Because temozolomide (TMZ) and erlotinib (ETN) cross the blood-brain barrier and have documented activity in NSCLC, a phase 3 study was designed to test whether these drugs would improve the OS associated with WBRT + SRS. Methods and Materials: NSCLC patients with 1 to 3 brain metastases were randomized to receive WBRT (2.5 Gy ◊ 15 to 37.5 Gy) and SRS alone, versus WBRT + SRS + TMZ (75 mg/m{sup 2}/day ◊ 21 days) or ETN (150 mg/day). ETN (150 mg/day) or TMZ (150-200 mg/m{sup 2}/day ◊ 5 days/month) could be continued for as long as 6 months after WBRT + SRS. The primary endpoint was OS. Results: After 126 patients were enrolled, the study closed because of accrual limitations. The median survival times (MST) for WBRT + SRS, WBRT + SRS + TMZ, and WBRT + SRS + ETN were qualitatively different (13.4, 6.3, and 6.1 months, respectively), although the differences were not statistically significant. Time to central nervous system progression and performance status at 6 months were better in the WBRT + SRS arm. Grade 3 to 5 toxicity was 11%, 41%, and 49% in arms 1, 2, and 3, respectively (P<.001). Conclusion: The addition of TMZ or ETN to WBRT + SRS in NSCLC patients with 1 to 3 brain metastases did not improve survival and possibly had a deleterious effect. Because the analysis is underpowered, these data suggest but do not prove that increased toxicity was the cause of inferior survival in the drug arms.

  18. RADIATION FIELDS, SCATTERING AND ... - Purdue University

    E-Print Network [OSTI]

    2006-12-26T23:59:59.000Z

    We define the forward and backward radiation fields on an asymptotically hyperbolic man- ... There is a history of interest in scattering theory for this class of manifolds, ...... and lower order terms as in in (4.10). ...... We first re-examine (

  19. Wayne State University Radiation Safety Lab Guide

    E-Print Network [OSTI]

    Finley Jr., Russell L.

    a personal contamination with radioactive material. If there is no response or during after hours contact AID WITHOUT REGARD TO THE RADIOACTIVE CONTAMINATION! Research labs at Wayne State University do! If the situation permits, secure your radioactive and other hazardous material as best you can prior to evacuating

  20. Force Behaviour in Radiation-Dominated Friedmann Universe

    E-Print Network [OSTI]

    M. Sharif

    2004-01-19T23:59:59.000Z

    We consider radiation-dominated Friedmann universe and evaluate its force four-vector and momentum. We analyse and compare the results with the already evaluated for the matter-dominated Friedmann model. It turns out that the results are physically acceptable.

  1. ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Solar Radiation

    E-Print Network [OSTI]

    Honsberg, Christiana

    ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Solar Radiation Solar Radiation: Effects of atmosphere, angular dependence of radiation, variation of solar radiation ­ Calculation of Solar Radiation: · Estimate of intensity of solar radiation · Angular Dependence ­ Solar Noon

  2. Radiation of inertial scalar particles in the de Sitter universe

    E-Print Network [OSTI]

    Robert Blaga

    2015-01-28T23:59:59.000Z

    We investigate the radiation from an inertial scalar particle evolving in a de Sitter expanding Universe. In the context of scalar QED the process is generated by the first order term in the perturbation theory expansion of the S-matrix. The partial transition probability is obtained and analysed, and soft-photon emission is found to dominate overall. It has been argued that an inertial particle evolving in dS spacetime loses physical momentum just as a decelerated particle in Minkowski space does. It is thus expected that an inertial charge will radiate in a similar way. We investigate the radiated energy and make a qualitative comparison of the angular distribution of the energy with the radiation pattern in the latter case.

  3. Quality Assessment in Oncology

    SciTech Connect (OSTI)

    Albert, Jeffrey M. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Das, Prajnan, E-mail: prajdas@mdanderson.org [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

    2012-07-01T23:59:59.000Z

    The movement to improve healthcare quality has led to a need for carefully designed quality indicators that accurately reflect the quality of care. Many different measures have been proposed and continue to be developed by governmental agencies and accrediting bodies. However, given the inherent differences in the delivery of care among medical specialties, the same indicators will not be valid across all of them. Specifically, oncology is a field in which it can be difficult to develop quality indicators, because the effectiveness of an oncologic intervention is often not immediately apparent, and the multidisciplinary nature of the field necessarily involves many different specialties. Existing and emerging comparative effectiveness data are helping to guide evidence-based practice, and the increasing availability of these data provides the opportunity to identify key structure and process measures that predict for quality outcomes. The increasing emphasis on quality and efficiency will continue to compel the medical profession to identify appropriate quality measures to facilitate quality improvement efforts and to guide accreditation, credentialing, and reimbursement. Given the wide-reaching implications of quality metrics, it is essential that they be developed and implemented with scientific rigor. The aims of the present report were to review the current state of quality assessment in oncology, identify existing indicators with the best evidence to support their implementation, and propose a framework for identifying and refining measures most indicative of true quality in oncologic care.

  4. Limited Chemotherapy and Shrinking Field Radiotherapy for Osteolymphoma (Primary Bone Lymphoma): Results From the Trans-Tasman Radiation Oncology Group 99.04 and Australasian Leukaemia and Lymphoma Group LY02 Prospective Trial;Bone; Lymphoma; Radiotherapy; Chemotherapy; Clinical trial

    SciTech Connect (OSTI)

    Christie, David, E-mail: david.christie@premion.com.au [Premion and Bond University, Gold Coast, Queensland (Australia); Dear, Keith [Department of Epidemiology and Population Studies, Australian National University, Canberra, New South Wales (Australia); Le, Thai [BHB, Premion, Brisbane, Queensland (Australia); Barton, Michael [Collaboration for Cancer Outcomes and Research (CCORE) and University of NSW, Sydney, New South Wales (Australia); Wirth, Andrew [Peter MacCallum Cancer Institute, Melbourne, Victoria (Australia); Porter, David [Auckland Hospital, Auckland (New Zealand); Roos, Daniel [Royal Adelaide Hospital, Adelaide, South Australia (Australia); Pratt, Gary [Royal Brisbane Hospital, Brisbane, Queensland (Australia)

    2011-07-15T23:59:59.000Z

    Purpose: To establish benchmark outcomes for combined modality treatment to be used in future prospective studies of osteolymphoma (primary bone lymphoma). Methods and Materials: In 1999, the Trans-Tasman Radiation Oncology Group (TROG) invited the Australasian Leukemia and Lymphoma Group (ALLG) to collaborate on a prospective study of limited chemotherapy and radiotherapy for osteolymphoma. The treatment was designed to maintain efficacy but limit the risk of subsequent pathological fractures. Patient assessment included both functional imaging and isotope bone scanning. Treatment included three cycles of CHOP chemotherapy and radiation to a dose of 45 Gy in 25 fractions using a shrinking field technique. Results: The trial closed because of slow accrual after 33 patients had been entered. Accrual was noted to slow down after Rituximab became readily available in Australia. After a median follow-up of 4.3 years, the five-year overall survival and local control rates are estimated at 90% and 72% respectively. Three patients had fractures at presentation that persisted after treatment, one with recurrent lymphoma. Conclusions: Relatively high rates of survival were achieved but the number of local failures suggests that the dose of radiotherapy should remain higher than it is for other types of lymphoma. Disability after treatment due to pathological fracture was not seen.

  5. Historically Black Colleges and Universities (HBCU) Solar Radiation Monitoring Network

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Historically Black Colleges and Universities (HBCU) Solar Radiation Monitoring Network operated from November 1985 through December 1996. The six-station network provided 5-minute averaged measurements of global and diffuse horizontal solar irradiance. The data were processed at the National Renewable Energy Laboratory (NREL) to improve the assessment of the solar radiation resources in the southeastern United States. Three of the stations also measured the direct-normal solar irradiance with a pyrheliometer mounted in an automatic sun tracker. All data are archived in the Standard Broadband Format (SBF) with quality-assessment indicators. Monthly data summaries and plots are also available for each month. In January 1997 the HBCU sites became part of the CONFRRM solar monitoring network.

  6. Motexafin-Gadolinium and Involved Field Radiation Therapy for Intrinsic Pontine Glioma of Childhood: A Children's Oncology Group Phase 2 Study

    SciTech Connect (OSTI)

    Bradley, Kristin A., E-mail: bradley@humonc.wisc.edu [Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin (United States); Zhou Tianni [Department of Preventive Medicine, University of Southern California, Los Angeles, California (United States)] [Department of Preventive Medicine, University of Southern California, Los Angeles, California (United States); McNall-Knapp, Rene Y. [Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma (United States)] [Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma (United States); Jakacki, Regina I. [Division of Pediatric Hematology/Oncology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (United States)] [Division of Pediatric Hematology/Oncology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (United States); Levy, Adam S. [Division of Pediatric Hematology/Oncology, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York (United States)] [Division of Pediatric Hematology/Oncology, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York (United States); Vezina, Gilbert [Department of Radiology, Children's National Medical Center, George Washington University School of Medicine, Washington, DC (United States)] [Department of Radiology, Children's National Medical Center, George Washington University School of Medicine, Washington, DC (United States); Pollack, Ian F. [Department of Neurosurgery, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania (United States)] [Department of Neurosurgery, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania (United States)

    2013-01-01T23:59:59.000Z

    Purpose: To evaluate the effects on 1-year event-free survival (EFS) and overall survival (OS) of combining motexafin and gadolinium (MGd), a potent radiosensitizer, with daily fractionated radiation therapy in children with newly diagnosed intrinsic pontine gliomas. Methods and Materials: Patients with newly diagnosed intrinsic pontine glioma were treated with MGd daily for 5 consecutive days each week, for a total of 30 doses. Patients received a 5- to 10-min intravenous bolus of MGd, 4.4 mg/kg/day, given 2 to 5 h prior to standard dose irradiation. Radiation therapy was administered at a daily dose of 1.8 Gy for 30 treatments over 6 weeks. The total dose was 54 Gy. Results: Sixty eligible children received MGd daily, concurrent with 6 weeks of radiation therapy. The estimated 1-year EFS was 18% {+-} 5%, and the estimated 1-year OS was 53% {+-} 6.5%. The most common grade 3 to 4 toxicities were lymphopenia, transient elevation of liver transaminases, and hypertension. Conclusions: Compared to historical controls, the addition of MGd to a standard 6-week course of radiation did not improve the survival of pediatric patients with newly diagnosed intrinsic pontine gliomas.

  7. Decline in Tested and Self-Reported Cognitive Functioning After Prophylactic Cranial Irradiation for Lung Cancer: Pooled Secondary Analysis of Radiation Therapy Oncology Group Randomized Trials 0212 and 0214

    SciTech Connect (OSTI)

    Gondi, Vinai, E-mail: vgondi@chicagocancer.org [Central Dupage Hospital Cancer Center, Warrenville, Illinois (United States) [Central Dupage Hospital Cancer Center, Warrenville, Illinois (United States); University of Wisconsin Comprehensive Cancer Center, Madison, Wisconsin (United States); Paulus, Rebecca [Radiation Therapy Oncology Group Statistical Center, Philadelphia, Pennsylvania (United States)] [Radiation Therapy Oncology Group Statistical Center, Philadelphia, Pennsylvania (United States); Bruner, Deborah W. [Nell Hodgson Woodfull School of Nursing, Emory University, Atlanta, Georgia (United States)] [Nell Hodgson Woodfull School of Nursing, Emory University, Atlanta, Georgia (United States); Meyers, Christina A. [University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Gore, Elizabeth M. [Medical College of Wisconsin, Milwaukee, Wisconsin (United States)] [Medical College of Wisconsin, Milwaukee, Wisconsin (United States); Wolfson, Aaron [University of Miami School of Medicine, Miami, Florida (United States)] [University of Miami School of Medicine, Miami, Florida (United States); Werner-Wasik, Maria [Thomas Jefferson University Hospital, Philadelphia, Pennsylvania (United States)] [Thomas Jefferson University Hospital, Philadelphia, Pennsylvania (United States); Sun, Alexander Y. [Princess Margaret Hospital, Toronto, ON (Canada)] [Princess Margaret Hospital, Toronto, ON (Canada); Choy, Hak [University of Texas Southwestern Moncreif Cancer Center, Fort Worth, Texas (United States)] [University of Texas Southwestern Moncreif Cancer Center, Fort Worth, Texas (United States); Movsas, Benjamin [Henry Ford Health System, Detroit, Michigan (United States)] [Henry Ford Health System, Detroit, Michigan (United States)

    2013-07-15T23:59:59.000Z

    Purpose: To assess the impact of prophylactic cranial irradiation (PCI) on self-reported cognitive functioning (SRCF), a functional scale on the European Organization for Research and Treatment of Cancer Core Quality of Life Questionnaire (EORTC QLQ-C30). Methods and Materials: Radiation Therapy Oncology Group (RTOG) protocol 0214 randomized patients with locally advanced non-small cell lung cancer to PCI or observation; RTOG 0212 randomized patients with limited-disease small cell lung cancer to high- or standard-dose PCI. In both trials, Hopkins Verbal Learning Test (HVLT)-Recall and -Delayed Recall and SRCF were assessed at baseline (after locoregional therapy but before PCI or observation) and at 6 and 12 months. Patients developing brain relapse before follow-up evaluation were excluded. Decline was defined using the reliable change index method and correlated with receipt of PCI versus observation using logistic regression modeling. Fisher's exact test correlated decline in SRCF with HVLT decline. Results: Of the eligible patients pooled from RTOG 0212 and RTOG 0214, 410 (93%) receiving PCI and 173 (96%) undergoing observation completed baseline HVLT or EORTC QLQ-C30 testing and were included in this analysis. Prophylactic cranial irradiation was associated with a higher risk of decline in SRCF at 6 months (odds ratio 3.60, 95% confidence interval 2.34-6.37, P<.0001) and 12 months (odds ratio 3.44, 95% confidence interval 1.84-6.44, P<.0001). Decline on HVLT-Recall at 6 and 12 months was also associated with PCI (P=.002 and P=.002, respectively) but was not closely correlated with decline in SRCF at the same time points (P=.05 and P=.86, respectively). Conclusions: In lung cancer patients who do not develop brain relapse, PCI is associated with decline in HVLT-tested and self-reported cognitive functioning. Decline in HVLT and decline in SRCF are not closely correlated, suggesting that they may represent distinct elements of the cognitive spectrum.

  8. Whole-pelvis, 'mini-pelvis,' or prostate-only external beam radiotherapy after neoadjuvant and concurrent hormonal therapy in patients treated in Radiation Therapy Oncology Group 9413 trial

    SciTech Connect (OSTI)

    Roach, Mack [University of California San Francisco, San Francisco, CA (United States)]. E-mail: roach@radonc17.ucsf.edu; De Silvio, Michelle [RTOG Statistical Headquarters, Philadelphia, PA (United States); Valicenti, Richard [Thomas Jefferson University, Philadelphia, PA (United States); Grignon, David [Wayne State University, Detroit, MI (United States); Asbell, Sucha O. [Albert Einstein Medical Center, Philadelphia, PA (United States); Lawton, Colleen [Medical College of Wisconsin, Milwaukee, WI (United States); Thomas, Charles R. [Oregon Health and Sciences University, Portland OR (United States); Shipley, William U. [Massachusetts General Hospital, Boston, MA (United States)

    2006-11-01T23:59:59.000Z

    Purpose: Radiation Therapy Oncology Group (RTOG) 9413 trial demonstrated a better progression-free survival (PFS) with whole-pelvis (WP) radiotherapy (RT) compared with prostate-only (PO) RT. This secondary analysis was undertaken to determine whether 'mini-pelvis' (MP; defined as {>=}10 x 11 cm but <11 x 11 cm) RT resulted in progression-free survival (PFS) comparable to that of WP RT. To avoid a timing bias, this analysis was limited to patients receiving neoadjuvant and concurrent hormonal therapy (N and CHT) in Arms 1 and 2 of the study. Methods and Materials: Eligible patients had a risk of lymph node (LN) involvement >15%. Neoadjuvant and concurrent hormonal therapy (N and CHT) was administered 2 months before and during RT for 4 months. From April 1, 1995, to June 1, 1999, a group of 325 patients were randomized to WP RT + N and CHT and another group of 324 patients were randomized to receive PO RT + N and CHT. Patients randomized to PO RT were dichotomized by median field size (10 x 11 cm), with the larger field considered an 'MP' field and the smaller a PO field. Results: The median PFS was 5.2, 3.7, and 2.9 years for WP, MP, and PO fields, respectively (p = 0.02). The 7-year PFS was 40%, 35%, and 27% for patients treated to WP, MP, and PO fields, respectively. There was no association between field size and late Grade 3+ genitourinary toxicity but late Grade 3+ gastrointestinal RT complications correlated with increasing field size. Conclusions: This subset analysis demonstrates that RT field size has a major impact on PFS, and the findings support comprehensive nodal treatment in patients with a risk of LN involvement of >15%.

  9. Can We Predict Plan Quality for External Beam Partial Breast Irradiation: Results of a Multicenter Feasibility Study (Trans Tasman Radiation Oncology Group Study 06.02)

    SciTech Connect (OSTI)

    Kron, Tomas, E-mail: Tomas.Kron@petermac.org [Peter MacCallum Cancer Centre, Departments of Radiation Oncology, Physical Sciences and Radiation Therapy, Melbourne, Victoria (Australia); Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria (Australia); School of Science, Engineering and Technology, Royal Melbourne Institute of Technology University, Melbourne, Victoria (Australia); Willis, David; Link, Emma [Peter MacCallum Cancer Centre, Departments of Radiation Oncology, Physical Sciences and Radiation Therapy, Melbourne, Victoria (Australia); Lehman, Margot [Princess Alexandra Hospital, Department of Radiation Oncology, Brisbane, Queensland (Australia); Campbell, Gillian [Auckland City Hospital, Department of Radiation Oncology, Auckland (New Zealand); O'Brien, Peter [Newcastle Calvary Mater Hospital, Department of Radiation Oncology, Newcastle, NSW (Australia); Chua, Boon [Peter MacCallum Cancer Centre, Departments of Radiation Oncology, Physical Sciences and Radiation Therapy, Melbourne, Victoria (Australia); Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria (Australia)

    2013-11-15T23:59:59.000Z

    Purpose: Partial breast irradiation (PBI) after lumpectomy may be an option for selected patients with early breast cancer. A feasibility study of accelerated PBI delivered using external beam 3-dimensional conformal radiation therapy (RT) was undertaken at 8 Australasian centers. The present study evaluated the impact of patient, tumor, and RT technique-related factors on the quality of RT plans as determined by the doseĖvolume parameters of organs at risk. Methods and Materials: Forty-eight patients were enrolled in the study. All RT plans were centrally reviewed using predefined dosimetric criteria before commencement and after completion of protocol therapy. The RT plans of 47 patients met the doseĖvolume constraints, and all 47 patients received PBI to a prescribed dose of 38.5 Gy in 10 fractions. The RT plan quality was determined by volumes of the ipsilateral whole breast, lung, and heart that received 50% and 95%; 30%; and 5% of the prescribed dose, respectively. Patient, tumor, and RT technique-related factors were investigated for association with the parameters of RT plan quality. Results: The ratio of the planning target volume to the ipsilateral whole-breast volume was significantly associated with the ipsilateral breast doses on multiple variable analyses. The distance of the postlumpectomy surgical cavity from the heart and lung were predictive for heart and lung doses, respectively. A distance between surgical cavity and heart of >4 cm typically resulted in <1% of the heart volume receiving 5 Gy or less. It was more difficult to meet the heart dose constraint for left-sided and medially located tumors. Conclusions: Partial breast irradiation using 3-dimensional conformal RT was feasible within the study constraints. The ratio of planning target volume to ipsilateral whole-breast volume and the distance of surgical cavity from the heart were significant predictors of the quality of treatment plan for external beam PBI.

  10. Y. Onel, CALOR2006, ChicagoY. Onel, CALOR2006, Chicago 1THE UNIVERSITY OF IOWATHE UNIVERSITY OF IOWA Radiation-Hard Quartz Cerenkov

    E-Print Network [OSTI]

    Akgun, Ugur

    , CALOR2006, Chicago 4THE UNIVERSITY OF IOWATHE UNIVERSITY OF IOWA Quartz Radiation Damage · Scientific literature about optical characteristics of Quartz fibers is generally in the infrared band (800nm, 1300nm UNIVERSITY OF IOWATHE UNIVERSITY OF IOWA Quartz Radiation Damage Test Area atTest Area at LILLIL · Motorized

  11. By Stanley Micklavzina, Asher Tubman, and Frank Vignola for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

  12. By Stanley Micklavzina, Asher Tubman, and Frank Vignola for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring

    E-Print Network [OSTI]

    Oregon, University of

    Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

  13. Center for Environmental Radiation Studies 1 Texas Tech University

    E-Print Network [OSTI]

    Chesser, Ronald Keith

    and international nuclear safety. Critical Success Factors Critical measures of success shall include regarding nuclear research, nuclear safety, biological effects, and homeland security · Training of graduate students and post-doctorates in the areas of molecular genetic responses, radiation dosimetry

  14. Oregon State University Department of Nuclear Engineering & Radiation Health Physics NeutronSpring 2011

    E-Print Network [OSTI]

    Tullos, Desiree

    THE Oregon State University Department of Nuclear Engineering & Radiation Health Physics Neutron's Study Abroad Program. Arnold will earn a B.S. in Nuclear Engineering with a minor in French when she graduates this spring. INSIDE Why would a nuclear engineering student add a French minor to an already

  15. By Raghu Parthasarathy for the Meyer for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory Page 7.1 6

  16. By Stanley Micklavzina and Frank Vignola for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory Page 2.1 6

  17. By Stanley Micklavzina, Asher Tubman, and Frank Vignola for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and the Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    Development and the University of Oregon Department of Physics and the Solar Radiation Monitoring Laboratory

  18. Radiation Sources External Beam and Isotopes

    E-Print Network [OSTI]

    Radiation Sources External Beam and Isotopes J. Daniel Bourland, PhD Professor Department of Radiation Oncology Departments of Physics and Biomedical Engineering Wake Forest School of Medicine Winston Radiation · Photons: electromagnetic radiation, no mass, E = h · X rays: origins are from atomic energy

  19. RADIATION SAFETY OFFICE UNIVERSITYOF MARYLAND

    E-Print Network [OSTI]

    Rubloff, Gary W.

    RADIATION SAFETY OFFICE UNIVERSITYOF MARYLAND RADIATION SAFETY MANUAL UNIVERSITY OF MARYLAND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2. Radiation Safety Committee (RSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.4. Radiation Safety Office (RSO

  20. By Stanley Micklavzina, James Utterback and Frank Vignola for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory significantly change the incident solar radiation and this will affect the experimental results. The idea, obtains a reading of current from the diffuse solar radiation, light from the sky, ground, surrounding

  1. Radiation Laboratory, University of Notre Dame quarterly report, January 1--March 31, 1994

    SciTech Connect (OSTI)

    Not Available

    1994-05-25T23:59:59.000Z

    39 abstracts are presented of research projects in radiation chemistry, photochemistry, and related subjects.

  2. Collection and Use of Family History in Oncology Clinics

    E-Print Network [OSTI]

    Hemminki, Akseli

    Collection and Use of Family History in Oncology Clinics TO THE EDITOR: The American Society of Clinical Oncology expert statement1 covered many helpful aspects of the clinical use of a family history-Cancer Database,relatingtotheproportionoffamilialcancers.3 Totalcancers in the offspring population (maximal age

  3. ORG0003 -January 10, 2014 UNIVERSITY OF IOWA

    E-Print Network [OSTI]

    Radiation Oncology Gynecology · Gyn. Oncology · Uro Gyn Pathology Radiology Pharmaceutical Services Genetics Care Family Medicine General Internal Medicine Obstetrics General Pediatrics Biochemistry (CCOM) Des's Hospital · Child Life · Children's Nursing Unit · CDD · Pediatrics · Pediatric Anesthesia · Perioperative

  4. University of Iowa Carver College of Medicine Baccalaureate Degree, Radiation Sciences

    E-Print Network [OSTI]

    , Radiation Sciences Interest · Follow applicable instructions for First-Year , Transfer, or International applicable instructions for Transfer or International Students · Apply to and rank order the following.medicine.uiowa.edu/radsci PH: 319-353-8388 Radiologic Technology Tracks Admission and Degree Requirements Admission

  5. Radiation Safety (Revised March 2010)

    E-Print Network [OSTI]

    Kay, Mark A.

    Radiation Safety Manual (Revised March 2010) Updated December 2012 Stanford University, Stanford California #12; #12; Radiation Safety Manual (Revised March 2010) Updated Environmental Health and Safety, Stanford University, Stanford California #12; CREDITS This Radiation Safety

  6. Assessing the impact of tumor evolution on oncology drug development and commercialization

    E-Print Network [OSTI]

    Sterk, Joseph P. (Sterk, Joseph Phillip)

    2011-01-01T23:59:59.000Z

    This thesis investigates the commercial viability of developing and commercializing targeted oncology drugs directed at a specific tumor mutation instead of all forms and mutations of a single target. While oncologic drugs ...

  7. Solar and Photovoltaic Data from the University of Oregon Solar Radiation Monitoring Laboratory (UO SRML)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The UO SRML is a regional solar radiation data center whose goal is to provide sound solar resource data for planning, design, deployment, and operation of solar electric facilities in the Pacific Northwest. The laboratory has been in operation since 1975. Solar data includes solar resource maps, cumulative summary data, daily totals, monthly averages, single element profile data, parsed TMY2 data, and select multifilter radiometer data. A data plotting program and other software tools are also provided. Shade analysis information and contour plots showing the effect of tilt and orientation on annual solar electric system perfomance make up a large part of the photovoltaics data.(Specialized Interface)

  8. By Stanley Micklavzina, Asher Tubman, and Frank Vignola for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    solar cell and light bulb filament. #12;Name: ______________________________________ Kit Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory as the distance between the solar cell and the lamp changes. The power generated by the solar cell is calculated

  9. Kobe University Graduate School of Medicine (Doctoral Course) Application Guide 2012/2013

    E-Print Network [OSTI]

    Banbara, Mutsunori

    , Oncology/Hematology, Hematology Department of Internal Related Divisions: Radiology (Radiology, Radiation Therapy, Pediatrics (Pediatrics, Child Health and Development, General Pediatrics), Dermatology-Biliary- Pancreatic Surgery, Breast Surgery, Cardiovascular Surgery, Thoracic Surgery, Pediatric Surgery Department

  10. For the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    and Solar Radiation Monitoring Laboratory Page C.1 6/20/2011 Appendix C: Vocabulary The following cell or module Global Irradiance (GHI) Total solar radiation on a horizontal surface Direct Normal

  11. E-Print Network 3.0 - asian oncology summit Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    with the other... Asian Countries, provides India with a forum for interaction with ASEAN members. Besides these inter... , Oncology, Oil Seeds and Soil Microbiology, and...

  12. MONDAY, March 5, 2012 Xihong Lin, Biostatistics, Harvard University, "Design and Analysis of Whole Exome (Genome)

    E-Print Network [OSTI]

    , Distinguished Chair in Pediatric Oncology, Department of Pediatrics, University of Texas, MD Anderson Cancer Graduate Program (IBGP) ShengKwei (Victor) Song, Ph.D., Associate Professor, Department of Radiology

  13. Surgeons' Knowledge and Practices Regarding the Role of Radiation Therapy in Breast Cancer Management

    SciTech Connect (OSTI)

    Zhou, Jessica [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States); Griffith, Kent A. [Department of Biostatistics, University of Michigan, Ann Arbor, Michigan (United States); Hawley, Sarah T.; Zikmund-Fisher, Brian J. [Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan (United States); Janz, Nancy K. [Department of Health Behavior and Health Education, University of Michigan School of Public Health, Ann Arbor, Michigan (United States); Sabel, Michael S. [Department of Surgery, University of Michigan, Ann Arbor, Michigan (United States); Katz, Steven J. [Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan (United States); Jagsi, Reshma, E-mail: rjagsi@med.umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan (United States)

    2013-12-01T23:59:59.000Z

    Purpose: Population-based studies suggest underuse of radiation therapy, especially after mastectomy. Because radiation oncology is a referral-based specialty, knowledge and attitudes of upstream providers, specifically surgeons, may influence patients' decisions regarding radiation, including whether it is even considered. Therefore, we sought to evaluate surgeons' knowledge of pertinent risk information, their patterns of referral, and the correlates of surgeon knowledge and referral in specific breast cancer scenarios. Methods and Materials: We surveyed a national sample of 750 surgeons, with a 67% response rate. We analyzed responses from those who had seen at least 1 breast cancer patient in the past year (n=403), using logistic regression models to identify correlates of knowledge and appropriate referral. Results: Overall, 87% of respondents were general surgeons, and 64% saw >10 breast cancer patients in the previous year. In a scenario involving a 45-year-old undergoing lumpectomy, only 45% correctly estimated the risk of locoregional recurrence without radiation therapy, but 97% would refer to radiation oncology. In a patient with 2 of 20 nodes involved after mastectomy, 30% would neither refer to radiation oncology nor provide accurate information to make radiation decisions. In a patient with 4 of 20 nodes involved after mastectomy, 9% would not refer to radiation oncology. Fewer than half knew that the Oxford meta-analysis revealed a survival benefit from radiation therapy after lumpectomy (45%) or mastectomy (32%). Only 16% passed a 7-item knowledge test; female and more-experienced surgeons were more likely to pass. Factors significantly associated with appropriate referral to radiation oncology included breast cancer volume, tumor board participation, and knowledge. Conclusions: Many surgeons have inadequate knowledge regarding the role of radiation in breast cancer management, especially after mastectomy. Targeted educational interventions may improve the quality of care.

  14. Meeting Report--NASA Radiation Biomarker Workshop

    SciTech Connect (OSTI)

    Straume, Tore; Amundson, Sally A,; Blakely, William F.; Burns, Frederic J.; Chen, Allen; Dainiak, Nicholas; Franklin, Stephen; Leary, Julie A.; Loftus, David J.; Morgan, William F.; Pellmar, Terry C.; Stolc, Viktor; Turteltaub, Kenneth W.; Vaughan, Andrew T.; Vijayakumar, Srinivasan; Wyrobek, Andrew J.

    2008-05-01T23:59:59.000Z

    A summary is provided of presentations and discussions from the NASA Radiation Biomarker Workshop held September 27-28, 2007, at NASA Ames Research Center in Mountain View, California. Invited speakers were distinguished scientists representing key sectors of the radiation research community. Speakers addressed recent developments in the biomarker and biotechnology fields that may provide new opportunities for health-related assessment of radiation-exposed individuals, including for long-duration space travel. Topics discussed include the space radiation environment, biomarkers of radiation sensitivity and individual susceptibility, molecular signatures of low-dose responses, multivariate analysis of gene expression, biomarkers in biodefense, biomarkers in radiation oncology, biomarkers and triage following large-scale radiological incidents, integrated and multiple biomarker approaches, advances in whole-genome tiling arrays, advances in mass-spectrometry proteomics, radiation biodosimetry for estimation of cancer risk in a rat skin model, and confounding factors. Summary conclusions are provided at the end of the report.

  15. andrew grant md: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiation Oncology Radiation and Cancer Biology Project Bejerano, Gill 9 JISC Grant Funding 911 University of St Andrews: "Making more effective use of ICT to support...

  16. UNIVERSITY OF PITTSBURGH RADIATION SAFETY OFFICE G-7 Parran Hall Phone: 412-624-2728 Fax: 412-624-3562

    E-Print Network [OSTI]

    Sibille, Etienne

    of obtaining dosimetry only First Middle Last (Maiden) Sex Social Security No. X X X - X __ - __ __ __ __ Date Nuclear medicine Nuclear cardiology Other __________________________ OCCUPATIONAL EXTERNAL RADIATION the current year. ~ A copy of my termination report(s) or current year dosimetry report(s) is attached. LIST

  17. Radiation Safety Manual Dec 2012 Page 1 RADIATION SAFETY

    E-Print Network [OSTI]

    Grishok, Alla

    Radiation Safety Manual ­ Dec 2012 Page 1 RADIATION SAFETY MANUAL For Columbia University NewYork-Presbyterian Hospital New York State Psychiatric Institute Barnard College December 2012 #12;Radiation Safety Manual ­ Dec 2012 Page 1 Table of Contents Introduction Chapter I: Radiation Safety Program A. Program

  18. Radiation Safety Training Basic Radiation Safety Training for

    E-Print Network [OSTI]

    Dai, Pengcheng

    Radiation Safety Training Basic Radiation Safety Training for Sealed Source Users for Physics 461 & 462 Modern Physics Laboratory Spring 2007 #12;Radiation Safety Department, University of Tennessee Purpose: To provide basic radiation safety training to the users of sealed sources located

  19. Radiation Safety Training Basic Radiation Safety Training for

    E-Print Network [OSTI]

    Dai, Pengcheng

    Radiation Safety Training Basic Radiation Safety Training for X-ray Users for Physics 461 & 462 Modern Physics Laboratory Spring 2007 #12;#12;Radiation Safety Department, University of Tennessee Protocol Title: Basic Radiation Safety Training for X-ray Users Drafted By: Chris Millsaps, RSS Reviewers

  20. The dynamics of the early universe and the initial conditions for inflation in a model with radiation and a Chaplygin gas

    E-Print Network [OSTI]

    G. A. Monerat; G. Oliveira-Neto; E. V. CorrÍa Silva; L. G. Ferreira Filho; P. Romildo Jr.; J. C. Fabris; R. Fracalossi; F. G. Alvarenga; S. V. B. GonÁalves

    2007-04-19T23:59:59.000Z

    The modeling of the early universe is done through the quantization of a Friedmann-Robertson-Walker model with positive curvature. The material content consists of two fluids: radiation and Chaplygin gas. The quantization of these models is made by following the Wheeler and DeWitt's prescriptions. Using the Schutz formalism, the time notion is recovered and the Wheeler-DeWitt equation transforms into a time dependent Schr\\"{o}dinger equation, which rules the dynamics of the early universe, under the action of an effective potential $V_{ef}$. Using a finite differences method and the Crank-Nicholson scheme, in a code implemented in the program OCTAVE, we solve the corresponding time dependent Schr\\"{o}dinger equation and obtain the time evolution of a initial wave packet. This wave packet satisfies appropriate boundary conditions. The calculation of the tunneling probabilities shows that the universe may emerge from the Planck era to an inflationary phase. It also shows that, the tunneling probability is a function of the mean energy of the initial wave packet and of two parameters related to the Chaplygin gas. We also show a comparison between these results and those obtained by the WKB approximation.

  1. ADAPTIVE RADIATION ROSEMARY G. GILLESPIE

    E-Print Network [OSTI]

    Gillespie, Rosemary

    1 A ADAPTIVE RADIATION ROSEMARY G. GILLESPIE University of California, Berkeley Adaptive radiation- tions and convergence of species groups on different land masses. Since then, adaptive radiation has diversity within a rapidly multiplying lineage." There are radiations that are not adaptive

  2. E-Print Network 3.0 - abdominal oncology clinical Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Investigator PI DeptDiv Study Coordinator Locations Summary: (Oncology Clinic), 3P1(Infusion Center) Full Committee Review 262010 HS-043050 9L-03-1: TREATMENT OF NEWLY......

  3. Pacific Northwest Solar Radiation Data

    E-Print Network [OSTI]

    Oregon, University of

    Pacific Northwest Solar Radiation Data UO SOLAR MONITORING LAB Physics Department -- Solar Energy Center 1274 University of Oregon Eugene, Oregon 97403-1274 April 1, 1999 #12;Hourly solar radiation data

  4. Radiation Safety Edward O'Connell

    E-Print Network [OSTI]

    tissues) #12;Sources of Background Radiation Exposure · Naturally occurring radioactive materialsRadiation Safety Edward O'Connell Radiation Safety Officer Stony Brook University New York #12;STONY BROOK UNIVERSITY & U. HOSPITAL MEDICAL CENTER #12;Why Radiation Safety · Working with radioactive

  5. Solar radiation intensity calculations

    E-Print Network [OSTI]

    Levine, Randolph Steven

    1978-01-01T23:59:59.000Z

    SOLAR RADIATION INTENSITY CALCULATIONS A Thesis by RANDOLPH STEVEN LEVINE Submitted to the Graduate College of Texas A&M University in partia'l fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1978 Major Subject...: Physics SOLAR RADIATION INTENSITY CALCULATIONS A Thesis by RANDOLPH STEVEN LEVINE Approved as to style and content by: (Chairman of Committee) (Member) (Member) ( member) (Head of Department) December 1978 f219 037 ABSTRACT Solar Radiation...

  6. UCHC Competency Checklist: ORIENTATION Position Title: Registered Nurse, JDH Employee Name: Unit: Radiation Oncology

    E-Print Network [OSTI]

    Oliver, Douglas L.

    . Participates in routine checking of emergency cart supplies and equipment, and orders replacement supplies.e. Blanketrol, Cooling/Warming Blanket) Incentive Spirometer Infusion Pumps: Alaris Medley Medication Safety

  7. Characterization of adaptive statistical iterative reconstruction algorithm for dose reduction in CT: A pediatric oncology perspective

    SciTech Connect (OSTI)

    Brady, S. L.; Yee, B. S.; Kaufman, R. A. [Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee 38105 (United States)

    2012-09-15T23:59:59.000Z

    Purpose: This study demonstrates a means of implementing an adaptive statistical iterative reconstruction (ASiR Trade-Mark-Sign ) technique for dose reduction in computed tomography (CT) while maintaining similar noise levels in the reconstructed image. The effects of image quality and noise texture were assessed at all implementation levels of ASiR Trade-Mark-Sign . Empirically derived dose reduction limits were established for ASiR Trade-Mark-Sign for imaging of the trunk for a pediatric oncology population ranging from 1 yr old through adolescence/adulthood. Methods: Image quality was assessed using metrics established by the American College of Radiology (ACR) CT accreditation program. Each image quality metric was tested using the ACR CT phantom with 0%-100% ASiR Trade-Mark-Sign blended with filtered back projection (FBP) reconstructed images. Additionally, the noise power spectrum (NPS) was calculated for three common reconstruction filters of the trunk. The empirically derived limitations on ASiR Trade-Mark-Sign implementation for dose reduction were assessed using (1, 5, 10) yr old and adolescent/adult anthropomorphic phantoms. To assess dose reduction limits, the phantoms were scanned in increments of increased noise index (decrementing mA using automatic tube current modulation) balanced with ASiR Trade-Mark-Sign reconstruction to maintain noise equivalence of the 0% ASiR Trade-Mark-Sign image. Results: The ASiR Trade-Mark-Sign algorithm did not produce any unfavorable effects on image quality as assessed by ACR criteria. Conversely, low-contrast resolution was found to improve due to the reduction of noise in the reconstructed images. NPS calculations demonstrated that images with lower frequency noise had lower noise variance and coarser graininess at progressively higher percentages of ASiR Trade-Mark-Sign reconstruction; and in spite of the similar magnitudes of noise, the image reconstructed with 50% or more ASiR Trade-Mark-Sign presented a more smoothed appearance than the pre-ASiR Trade-Mark-Sign 100% FBP image. Finally, relative to non-ASiR Trade-Mark-Sign images with 100% of standard dose across the pediatric phantom age spectrum, similar noise levels were obtained in the images at a dose reduction of 48% with 40% ASIR Trade-Mark-Sign and a dose reduction of 82% with 100% ASIR Trade-Mark-Sign . Conclusions: The authors' work was conducted to identify the dose reduction limits of ASiR Trade-Mark-Sign for a pediatric oncology population using automatic tube current modulation. Improvements in noise levels from ASiR Trade-Mark-Sign reconstruction were adapted to provide lower radiation exposure (i.e., lower mA) instead of improved image quality. We have demonstrated for the image quality standards required at our institution, a maximum dose reduction of 82% can be achieved using 100% ASiR Trade-Mark-Sign ; however, to negate changes in the appearance of reconstructed images using ASiR Trade-Mark-Sign with a medium to low frequency noise preserving reconstruction filter (i.e., standard), 40% ASiR Trade-Mark-Sign was implemented in our clinic for 42%-48% dose reduction at all pediatric ages without a visually perceptible change in image quality or image noise.

  8. Brandeis University Brown University

    E-Print Network [OSTI]

    Jiang, Huiqiang

    Institute of Technology McGill University Michigan State University New York University Northwestern University of Kansas University of Maryland, College Park University of Michigan University of MinnesotaBrandeis University Brown University California Institute of Technology Carnegie Mellon University

  9. Radiation Protection Guidance Hospital Staff

    E-Print Network [OSTI]

    Kay, Mark A.

    Page 1 Radiation Protection Guidance For Hospital Staff Prepared for Stanford The privilege to use ionizing radiation at Stanford University, Stanford Hospital and Clinics, Lucile Packard with radioactive materials or radiation devices are responsible for knowing and adhering to applicable requirements

  10. Forecasting of Solar Radiation Detlev Heinemann, Elke Lorenz, Marco Girodo

    E-Print Network [OSTI]

    Heinemann, Detlev

    Forecasting of Solar Radiation Detlev Heinemann, Elke Lorenz, Marco Girodo Oldenburg University have been presented more than twenty years ago (Jensenius, 1981), when daily solar radiation forecasts

  11. The Clinical Development of Molecularly Targeted Agents in Combination With Radiation Therapy: A Pharmaceutical Perspective

    SciTech Connect (OSTI)

    Ataman, Ozlem U., E-mail: ouataman@hotmail.com [Global Medicines Development, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom); Sambrook, Sally J. [Global Medicines Development, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom)] [Global Medicines Development, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom); Wilks, Chris [Innovative Medicines, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom)] [Innovative Medicines, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom); Lloyd, Andrew [Global Medicines Development, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom)] [Global Medicines Development, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom); Taylor, Amanda E. [Yellow Delaney Communications Ltd, Wilmslow, Cheshire (United Kingdom)] [Yellow Delaney Communications Ltd, Wilmslow, Cheshire (United Kingdom); Wedge, Stephen R. [Innovative Medicines, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom)] [Innovative Medicines, AstraZeneca, Alderley Park, Macclesfield, Cheshire (United Kingdom)

    2012-11-15T23:59:59.000Z

    Summary: This paper explores historical and current roles of pharmaceutical industry sponsorship of clinical trials testing radiation therapy combinations with molecularly targeted agents and attempts to identify potential solutions to expediting further combination studies. An analysis of clinical trials involving a combination of radiation therapy and novel cancer therapies was performed. Ongoing and completed trials were identified by searching the (clinicaltrials.gov) Web site, in the first instance, with published trials of drugs of interest identified through American Society of Clinical Oncology, European CanCer Organisation/European Society for Medical Oncology, American Society for Radiation Oncology/European Society for Therapeutic Radiology and Oncology, and PubMed databases and then cross-correlated with (clinicaltrials.gov) protocols. We examined combination trials involving radiation therapy with novel agents and determined their distribution by tumor type, predominant molecular mechanisms examined in combination to date, timing of initiation of trials relative to a novel agent's primary development, and source of sponsorship of such trials. A total of 564 studies of targeted agents in combination with radiation therapy were identified with or without concomitant chemotherapy. Most studies were in phase I/II development, with only 36 trials in phase III. The tumor site most frequently studied was head and neck (26%), followed by non-small cell lung cancer. Pharmaceutical companies were the sponsors of 33% of studies overall and provided support for only 16% of phase III studies. In terms of pharmaceutical sponsorship, Genentech was the most active sponsor of radiation therapy combinations (22%), followed by AstraZeneca (14%). Most radiation therapy combination trials do not appear to be initiated until after drug approval. In phase III studies, the most common (58%) primary endpoint was overall survival. Collectively, this analysis suggests that such trials are not given priority by pharmaceutical companies. The potential reasons for this and some challenges and possible solutions are discussed.

  12. Radiation Safety Guide For Ancillary Personnel

    E-Print Network [OSTI]

    Wilcock, William

    , facilities, and public safety staff) who occasionally work in areas posted with the radiation symbol rules, you can ensure your safety while working in areas posted with the radiation symbol. 1. Follow allRadiation Safety Guide For Ancillary Personnel University of Washington Radiation Safety Office 203

  13. Radiation: Radiation Control (Indiana)

    Broader source: Energy.gov [DOE]

    It is the policy of the state to encourage the constructive uses of radiation and to control its harmful effects. This section contains regulations pertaining to the manufacture, use,...

  14. For the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and the Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    H:PVKitComponents© TableH.1:ContentsofPVKitandpartsrequiredforcomponents Quantity Item Quantity Item 1 Solar panel 1 and the Solar Radiation Monitoring Laboratory

  15. Gravity, radiation, and coflow effects on partially premixed flames Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544

    E-Print Network [OSTI]

    Aggarwal, Suresh K.

    Gravity, radiation, and coflow effects on partially premixed flames Xiao Qina) Department 2004 Our objective is to characterize gravity effects on the structure of laminar methane­air partially.57 that is in accord with a previous compilation of normal gravity data. The radiation Damko¨hler number is inversely

  16. RADIATION MONITORING

    E-Print Network [OSTI]

    Thomas, R.H.

    2010-01-01T23:59:59.000Z

    of Monitoring for Radiation Protection of Workers" in ICRPNo. 9, in "Advances in Radiation Protection and Dosimetry inDosimetry f o r Stray Radiation Monitoring on the CERN S i t

  17. Aachen RWTH Aarhus University Aberdeen University Adelaide University Alabama University Alberta University Amsterdam University Arizona University Auckland University Australian National University Bath University Beijing

    E-Print Network [OSTI]

    Tisdell, Chris

    Massachusetts University Massey University McGill University McMaster University Melbourne University Michigan State University Michigan University Minnesota University Monash University Montpellier UniversityAachen RWTH Aarhus University Aberdeen University Adelaide University Alabama University Alberta

  18. Radiation Induced Instability Patrick Hagerty

    E-Print Network [OSTI]

    Bloch, Anthony

    Radiation Induced Instability Patrick Hagerty #3; Department of Mathematics University of Michigan of Michigan Ann Arbor, MI 48109 abloch@math.lsa.umich.edu Michael I. Weinstein z Fundamental Mathematics a central rigid body which can radiate energy through exible components such as solar panels and antennae

  19. Radiation physics, biophysics, and radiation biology

    SciTech Connect (OSTI)

    Hall, E.J.

    1992-05-01T23:59:59.000Z

    The following research programs from the Center for Radiological Research of Columbia University are described: Design and development of a new wall-less ultra miniature proportional counter for nanodosimetry; some recent measurements of ionization distributions for heavy ions at nanometer site sizes with a wall-less proportional counter; a calculation of exciton energies in periodic systems with helical symmetry: application to a hydrogen fluoride chain; electron energy-loss function in polynucleotide and the question of plasmon excitation; a non-parametric, microdosimetric-based approach to the evaluation of the biological effects of low doses of ionizing radiation; high-LET radiation risk assessment at medium doses; high-LET radiobiological effects: increased lesion severity or increased lesion proximity; photoneutrons generated by high energy medical linacs; the biological effectiveness of neutrons; implications for radiation protection; molecular characterization of oncogenes induced by neutrons; and the inverse dose-rate effect for oncogenic transformation by charged particles is LET dependent.

  20. Development and Validation of a Heart Atlas to Study Cardiac Exposure to Radiation Following Treatment for Breast Cancer

    SciTech Connect (OSTI)

    Feng, Mary, E-mail: maryfeng@umich.ed [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Moran, Jean M. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Koelling, Todd [Department of Internal Medicine, Division of Cardiology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Chughtai, Aamer [Department of Radiology, University of Michigan Medical Center, Ann Arbor, Michigan (United States); Chan, June L.; Freedman, Laura; Hayman, James A.; Jagsi, Reshma; Jolly, Shruti; Larouere, Janice; Soriano, Julie; Marsh, Robin; Pierce, Lori J. [Department of Radiation Oncology, University of Michigan Medical Center, Ann Arbor, Michigan (United States)

    2011-01-01T23:59:59.000Z

    Purpose: Cardiac toxicity is an important sequela of breast radiotherapy. However, the relationship between dose to cardiac structures and subsequent toxicity has not been well defined, partially due to variations in substructure delineation, which can lead to inconsistent dose reporting and the failure to detect potential correlations. Here we have developed a heart atlas and evaluated its effect on contour accuracy and concordance. Methods and Materials: A detailed cardiac computed tomography scan atlas was developed jointly by cardiology, cardiac radiology, and radiation oncology. Seven radiation oncologists were recruited to delineate the whole heart, left main and left anterior descending interventricular branches, and right coronary arteries on four cases before and after studying the atlas. Contour accuracy was assessed by percent overlap with gold standard atlas volumes. The concordance index was also calculated. Standard radiation fields were applied. Doses to observer-contoured cardiac structures were calculated and compared with gold standard contour doses. Pre- and post-atlas values were analyzed using a paired t test. Results: The cardiac atlas significantly improved contour accuracy and concordance. Percent overlap and concordance index of observer-contoured cardiac and gold standard volumes were 2.3-fold improved for all structures (p < 0.002). After application of the atlas, reported mean doses to the whole heart, left main artery, left anterior descending interventricular branch, and right coronary artery were within 0.1, 0.9, 2.6, and 0.6 Gy, respectively, of gold standard doses. Conclusions: This validated University of Michigan cardiac atlas may serve as a useful tool in future studies assessing cardiac toxicity and in clinical trials which include dose volume constraints to the heart.

  1. By Asher Tubman for the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    Department of Physics and Solar Radiation Monitoring Laboratory Page F.1 6/20/2011 Appendix F: Review of PV Panels Labs These kits were used for the first year of a two IB physics class used primarily as a followup/ reinforcement/ application of an electrical circuits unit. I would like

  2. For the Meyer Fund for Sustainable Development and the University of Oregon Department of Physics and the Solar Radiation Monitoring Laboratory

    E-Print Network [OSTI]

    Oregon, University of

    ://www.californiasolarcenter.org/history_pv.html http://www.eere.energy.gov/basics/renewable_energy/solar.html http://www.nrel.gov/ncpv/ http://www.fsec.ucf.edu/en/education/index.htm http://www.nrel.gov/data/pix/searchpix.html http://www.ases.org/ http://www.seia.org/cs/about_solar_energy and the Solar Radiation Monitoring Laboratory

  3. Danger radiations

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Le confťrencier Mons.Hofert parle des dangers et risques des radiations, le contrŰle des zones et les prťcautions ŗ prendre ( p.ex. film badge), comment mesurer les radiations etc.

  4. Purely radiative perfect fluids

    E-Print Network [OSTI]

    B. Bastiaensen; H. R. Karimian; N. Van den Bergh; L. Wylleman

    2007-05-08T23:59:59.000Z

    We study `purely radiative' (div E = div H = 0) and geodesic perfect fluids with non-constant pressure and show that the Bianchi class A perfect fluids can be uniquely characterized --modulo the class of purely electric and (pseudo-)spherically symmetric universes-- as those models for which the magnetic and electric part of the Weyl tensor and the shear are simultaneously diagonalizable. For the case of constant pressure the same conclusion holds provided one also assumes that the fluid is irrotational.

  5. Radiation detector

    DOE Patents [OSTI]

    Fultz, Brent T. (Berkeley, CA)

    1983-01-01T23:59:59.000Z

    Apparatus is provided for detecting radiation such as gamma rays and X-rays generated in backscatter Mossbauer effect spectroscopy and X-ray spectrometry, which has a large "window" for detecting radiation emanating over a wide solid angle from a specimen and which generates substantially the same output pulse height for monoenergetic radiation that passes through any portion of the detection chamber. The apparatus includes a substantially toroidal chamber with conductive walls forming a cathode, and a wire anode extending in a circle within the chamber with the anode lying closer to the inner side of the toroid which has the least diameter than to the outer side. The placement of the anode produces an electric field, in a region close to the anode, which has substantially the same gradient in all directions extending radially from the anode, so that the number of avalanche electrons generated by ionizing radiation is independent of the path of the radiation through the chamber.

  6. Radiation detector

    DOE Patents [OSTI]

    Fultz, B.T.

    1980-12-05T23:59:59.000Z

    Apparatus is provided for detecting radiation such as gamma rays and x-rays generated in backscatter Moessbauer effect spectroscopy and x-ray spectrometry, which has a large window for detecting radiation emanating over a wide solid angle from a specimen and which generates substantially the same output pulse height for monoenergetic radiation that passes through any portion of the detection chamber. The apparatus includes a substantially toroidal chamber with conductive walls forming a cathode, and a wire anode extending in a circle within the chamber with the anode lying closer to the inner side of the toroid which has the least diameter than to the outer side. The placement of the anode produces an electric field, in a region close to the anode, which has substantially the same gradient in all directions extending radially from the anode, so that the number of avalanche electrons generated by ionizing radiation is independent of the path of the radiation through the chamber.

  7. UNIVERSITY RESEARCH PROGRAMS IN ROBOTICS, TECHNOLOGIES FOR MICROELECTROMECHANICAL SYSTEMS IN DIRECTED STOCKPILE WORK RADIATION AND ENGINEERING CAMPAIGNS - 2005-06 FINAL ANNUAL REPORT

    SciTech Connect (OSTI)

    James S. Tulenko; Dean Schoenfeld; David Hintenlang; Carl Crane; Shannon Ridgeway; Jose Santiago; Charles Scheer

    2006-11-30T23:59:59.000Z

    The research performed by the University of Florida (UF) is directed to the development of technologies that can be utilized at a micro-scale in varied environments. Work is focused on micro-scale energy systems, visualization, and mechanical devices. This work will impact the NNSA need related to micro-assembly operations. The URPR activities are executed in a University environment, yet many applications of the resulting technologies may be classified or highly restrictive in nature. The NNSA robotics technologists apply an NNSA needs focus to the URPR research, and actively work to transition relevant research into the deployment projects in which they are involved. This provides a ďResearch to Development to ApplicationĒ structure within which innovative research has maximum opportunity for impact without requiring URPR researchers to be involved in specific NNSA projects. URPR researchers need to be aware of the NNSA applications in order to ensure the research being conducted has relevance, the URPR shall rely upon the NNSA sites for direction.

  8. Correlation of in vivo photosensitizer fluorescence and photodynamic-therapy-induced depth of necrosis

    E-Print Network [OSTI]

    Yodh, Arjun G.

    to quantify tis- sue photosensitizer uptake and to predict PDT tissue damage. © 2003 Society of Photo-Optical and Department of Radiation Oncology Philadelphia, Pennsylvania 19104 Michael Solonenko University of Pennsylvania Department of Physics and Astronomy and Department of Radiation Oncology Philadelphia

  9. Radiation dosimeter

    DOE Patents [OSTI]

    Fox, Richard J. (Oak Ridge, TN)

    1983-01-01T23:59:59.000Z

    A radiation detector readout circuit is provided which produces a radiation dose-rate readout from a detector even though the detector output may be highly energy dependent. A linear charge amplifier including an output charge pump circuit amplifies the charge signal pulses from the detector and pumps the charge into a charge storage capacitor. The discharge rate of the capacitor through a resistor is controlled to provide a time-dependent voltage which when integrated provides an output proportional to the dose-rate of radiation detected by the detector. This output may be converted to digital form for readout on a digital display.

  10. Radiation dosimeter

    DOE Patents [OSTI]

    Fox, R.J.

    1981-09-01T23:59:59.000Z

    A radiation detector readout circuit is provided which produces a radiation dose-rate readout from a detector even through the detector output may be highly energy dependent. A linear charge amplifier including an output charge pump circuit amplifies the charge signal pulses from the detector and pumps the charge into a charge storage capacitor. The discharge rate of the capacitor through a resistor is controlled to provide a time-dependent voltage which when integrated provides an output proportional to the dose-rate of radiation detected by the detector. This output may be converted to digital form for readout on a digital display.

  11. RADIATION SAFETY TRAINING MANUAL Radiation Safety Office

    E-Print Network [OSTI]

    Sibille, Etienne

    RADIATION SAFETY TRAINING MANUAL Radiation Safety Office 130 DeSoto Street G-7 Parran with sources of ionizing radiation are required to be instructed in the basic principles of radiation protection and the potential risks of ionizing radiation. Radiation Safety Office personnel provide

  12. Appendix G. Radiation Appendix G. Radiation

    E-Print Network [OSTI]

    Pennycook, Steve

    -made sources. People are exposed to naturally occurring radiation constantly. For example, cosmic radiation of radiation and its effects on the environment and biological systems. Radiation comes from natural and humanAppendix G. Radiation #12;#12;Appendix G. Radiation This appendix presents basic facts about

  13. RADIATION RESEARCH 161, 451457 (2004) 0033-7587/04 $15.00

    E-Print Network [OSTI]

    Stewart, Robert D.

    451 RADIATION RESEARCH 161, 451­457 (2004) 0033-7587/04 $15.00 2004 by Radiation Research Society of DNA Damages Formed by Ionizing Radiation V. A. Semenenko and R. D. Stewart1 Purdue University, School Carlo Algorithm to Simulate the Spectrum of DNA Damages Formed by Ionizing Radiation. Radiat. Res. 161

  14. Instantaneous Power Radiated from Magnetic Dipole Moments

    E-Print Network [OSTI]

    Peter D. Morley; Douglas J. Buettner

    2014-07-04T23:59:59.000Z

    We compute the power radiated per unit solid angle of a moving magnetic dipole moment, and its instantaneous radiated power, both non-relativistically and relativistically. This is then applied to various interesting situations: solar neutrons, electron synchrotrons and cosmological Dirac neutrinos. Concerning the latter, we show that hypothesized early-universe Big Bang conditions allow for neutrino radiation cooling and provide an energy loss-mechanism for subsequent neutrino condensation.

  15. Recent Results on Diamond Radiation Tolerance

    E-Print Network [OSTI]

    Seidel, Sally

    -crystal (sc) and polycrystalline (poly) diamond exposed to 5 beam conditions. Figure of merit: Mean Free PathRecent Results on Diamond Radiation Tolerance Sally Seidel University of New Mexico Representing 1 #12;ß Overview of diamond and radiation damage issues ß Investigation of the application

  16. Radiation and Health Thormod Henriksen

    E-Print Network [OSTI]

    Johansen, Tom Henning

    of radioactivity from reactor accidents and fallout from nuclear explosions in the atmosphere. These subjects wereRadiation and Health by Thormod Henriksen and Biophysics group at UiO #12;Preface The present book is an update and extension of three previous books from groups of scientists at the University of Oslo

  17. Radiative ?(1S) decays

    E-Print Network [OSTI]

    Baringer, Philip S.

    1990-03-01T23:59:59.000Z

    ó wW~ ii~ ~ + v~ 1''&WV'' V 0.20 0.45 0.70 ~y ~ EBFA~ 0.95 l.20 FIG. 4. Energy spectrum (normalized to beam energy) for Y~y2(h+h ) event candidates, with continuum data and ex- pected background from Y~m 2(h +h ) overplotted. 40 30ó ~ 20ó LLI IOó hl...PHYSICAL REVIEW 0 VOLUME 41, NUMBER 5 Radiative T(lS) decays 1 MARCH 1990 R. Fulton, M. Hempstead, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, F. Morrow, and J. Whitmore Ohio State University, Columbus, Ohio 43210 W.-Y. Chen, J. Dominick, R. L. Mc...

  18. Radiation receiver

    DOE Patents [OSTI]

    Hunt, A.J.

    1983-09-13T23:59:59.000Z

    The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles. 5 figs.

  19. Radiation receiver

    DOE Patents [OSTI]

    Hunt, Arlon J. (Oakland, CA)

    1983-01-01T23:59:59.000Z

    The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles.

  20. Experimental and Computational Studies of Electric Thruster Plasma Radiation Emission

    E-Print Network [OSTI]

    Experimental and Computational Studies of Electric Thruster Plasma Radiation Emission Murat Celik Thruster Plasma Radiation Emission by Murat C¬łelik B.S., Aerospace Engineering and Physics, University;Experimental and Computational Studies of Electric Thruster Plasma Radiation Emission by Murat C¬łelik Submitted

  1. NEW SOURCES OF RADIATION

    E-Print Network [OSTI]

    Schimmerling, W.

    2010-01-01T23:59:59.000Z

    Stanford Synchrotron Radiation Project Report No. 75/07.IBL 79M0733 Fig. 20. Radiation emission pattern by electronsWinick, Stanford Synchrotron Radiation Laboratory. Fig. 21.

  2. Radiation-induced angiosarcoma

    E-Print Network [OSTI]

    Anzalone, C Lane; Cohen, Philip R; Diwan, Abdul H; Prieto, Victor G

    2013-01-01T23:59:59.000Z

    1a Figure 1b Figure 1. Radiation-induced angiosarcoma in afollowing completion of radiation therapy. Figure 2a Figurecell histiocytosis after radiation for breast carcinoma: can

  3. Radiation Protection Act (Pennsylvania)

    Broader source: Energy.gov [DOE]

    This Act combines the radiation safety provisions of The Atomic Energy Development and Radiation Control Act and the Environmental Radiation Protection Act, and empowers the Department of...

  4. The University of Sheffield 2014 007M&C Academic Unit of Clinical Oncology B4 41

    E-Print Network [OSTI]

    Williamson, Mike P.

    Blackwell's Academic Bookshop H3 175 Broad Lane Court G3 169 Brook Hill Hall E3 125 C Campus Services E2 104 Electronic and Electrical Engineering H3 170, 177 Elmfield Building B3 31 Endcliffe Student Accommodation 197 Finance Department E2 104 Firth Court D3 105 Firth Hall D3 105 Florey Building D3 114 French F3

  5. UNIVERSITY OF OREGON SOLAR MONITORING LABORATORY The University of Oregon (UO) Solar Moni-

    E-Print Network [OSTI]

    Oregon, University of

    i UNIVERSITY OF OREGON SOLAR MONITORING LABORATORY The University of Oregon (UO) Solar Moni- toring Laboratory has been measuring incident solar radiation since 1975. Current support for this work comes from the Regional Solar Radiation Monitoring Project (RSRMP), a utility consortium project including the Bon

  6. Safe Anesthesia for Radiotherapy in Pediatric Oncology: St. Jude Children's Research Hospital Experience, 2004-2006

    SciTech Connect (OSTI)

    Anghelescu, Doralina L. [Division of Anesthesiology, St. Jude Children's Research Hospital, Memphis, TN (United States)], E-mail: doralina.anghelescu@stjude.org; Burgoyne, Laura L. [Division of Anesthesiology, St. Jude Children's Research Hospital, Memphis, TN (United States); Liu Wei [Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN (United States); Hankins, Gisele M. [Division of Anesthesiology, St. Jude Children's Research Hospital, Memphis, TN (United States); Cheng, Cheng [Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, TN (United States); Beckham, Penny A. C.R.N.A.; Shearer, Jack; Norris, Angela L. [Division of Anesthesiology, St. Jude Children's Research Hospital, Memphis, TN (United States); Kun, Larry E. [Department of Radiological Sciences, St. Jude Children's Research Hospital, Memphis, TN (United States); Bikhazi, George B. [Division of Anesthesiology, St. Jude Children's Research Hospital, Memphis, TN (United States)

    2008-06-01T23:59:59.000Z

    Purpose: To determine the incidence of anesthesia-related complications in children undergoing radiotherapy and the associated risk factors. Methods and Materials: We retrospectively investigated the incidence and types of anesthesia-related complications and examined their association with age, weight, oncology diagnosis, type of anesthetic (propofol vs. propofol and adjuncts), total propofol dose, anesthetic duration, type of radiotherapy procedure (simulation vs. radiotherapy) and patient position (prone vs. supine). Results: Between July 2004 and June 2006, propofol was used in 3,833 procedures (3,611 radiotherapy sessions and 222 simulations) in 177 patients. Complications occurred during 49 anesthetic sessions (1.3%). On univariate analysis, four factors were significantly associated with the risk of complications: procedure duration (p <0.001), total propofol dose (p <0.001), use of adjunct agents (vs. propofol alone; p = 0.029), and simulation (vs. radiotherapy; p = 0.014). Patient position (prone vs. supine) was not significantly associated with the frequency of complications (odds ratio, 0.71; 95% confidence interval, 0.33-1.53; p = 0.38). On multivariate analysis, the procedure duration (p <0.0001) and total propofol dose (p {<=}0.03) were the most significant risk factors after adjustment for age, weight, anesthetic type, and procedure type. We found no evidence of the development of tolerance to propofol. Conclusion: The rate of anesthesia-related complications was low (1.3%) in our study. The significant risk factors were procedure duration, total propofol dose, the use of adjunct agents with propofol, and simulation (vs. radiotherapy)

  7. PORTLAND STATE UNIVERSITY RADIATION SAFETY OPERATIONS MANUAL

    E-Print Network [OSTI]

    Bertini, Robert L.

    1101.2 SEMI-ANNUAL RADIONUCLIDE INVENTORY 1501.1 RADIOACTIVE WASTE HANDLING & STORAGE 1501.2 RADIOACTIVE LIQUID WASTE DISPOSALS 1501.3 RADIOACTIVE WASTE PICK-UP BY RSO 1601.1 X-RAY MACHINE USE (RSOP) TABLE OF CONTENTS RSOP Number Title 101.1 ADMINISTRATIVE ACTIONS 601.1 RADIOACTIVE MATERIAL

  8. Oak Rigde Associated Universities (ORAU) Radiation Emergency...

    Energy Savers [EERE]

    Assistance CenterTraining Site (REACTS), ORAU Director More Documents & Publications LM Records Handling System (LMRHS01) - Energy Employees Occupational Illness Compensation...

  9. Alpha Radiation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICE OF RESEARCHThermal SolarAllocatioBasics of Radiation Gamma

  10. AMERICAN UNIVERSITY OF BEIRUT UNIVERSITY RADIATION SAFETY COMMITTEE

    E-Print Network [OSTI]

    Shihadeh, Alan

    ): _____________________________________________________ 9. RADIOACTIVE WASTE What method(s) will be used to dispose of your radioactive wastes? Separation): _____________________________________________________ How will you secure radioactive waste to prevent loss or theft? Waste container will be conspicuously will be the principal authorized user for communications, ordering radioactive materials, etc. The Training

  11. E-Print Network 3.0 - ams-02 transition radiation Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    radiation... of tunable ArF excimer laser radiation in a mixture of H2 and D2 produces tunable ... Source: Nijmegen, University of - Department of Molecular and Laser Physics...

  12. Bremsstrahlung Radiation At a Vacuum Bubble Wall

    E-Print Network [OSTI]

    Jae-Weon Lee; Kyungsub Kim; Chul H. Lee; Ji-ho Jang

    2007-04-06T23:59:59.000Z

    When charged particles collide with a vacuum bubble, they can radiate strong electromagnetic waves due to rapid deceleration. Owing to the energy loss of the particles by this bremsstrahlung radiation, there is a non-negligible damping pressure acting on the bubble wall even when thermal equilibrium is maintained. In the non-relativistic region, this pressure is proportional to the velocity of the wall and could have influenced the bubble dynamics in the early universe.

  13. Adaptors for radiation detectors

    DOE Patents [OSTI]

    Livesay, Ronald Jason

    2014-04-22T23:59:59.000Z

    Described herein are adaptors and other devices for radiation detectors that can be used to make accurate spectral measurements of both small and large bulk sources of radioactivity, such as building structures, soils, vessels, large equipment, and liquid bodies. Some exemplary devices comprise an adaptor for a radiation detector, wherein the adaptor can be configured to collimate radiation passing through the adapter from an external radiation source to the radiation detector and the adaptor can be configured to enclose a radiation source within the adapter to allow the radiation detector to measure radiation emitted from the enclosed radiation source.

  14. The solar radiation climate of Texas

    E-Print Network [OSTI]

    Hall, Vaughan Walter

    1967-01-01T23:59:59.000Z

    THE SOLAR RADIATION CLIMATE OF TEXAS A Thesis By VAUGHAN W. HALL Major& USAF Submitted to the Graduate College of the Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1967 Major Subject...: METEOROLOGY THE SOLAR RADIATION CLIMATE OF TEXAS A Thesis By VAUGHAN W. HALL Major, USAF Approved as to style and content by: Ch irman o ommittee Head of epa ent Member / ' 6p trCc-aCZm ~ Me er May 1967 The Solar Radiation Climate of Texas. (May...

  15. E-Print Network 3.0 - abdominopelvic radiation therapy Sample...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1. What is radiation ... Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  16. E-Print Network 3.0 - analysis radiation therapy Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1. What is radiation ... Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  17. E-Print Network 3.0 - accelerated radiation therapy Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1. What is radiation ... Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  18. E-Print Network 3.0 - automated radiation targeting Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    radiation therapy is concerned Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  19. E-Print Network 3.0 - aperture radiation therapy Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1. What is radiation ... Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  20. E-Print Network 3.0 - adaptive radiation therapy Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1. What is radiation ... Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  1. E-Print Network 3.0 - abdominal radiation therapy Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1. What is radiation ... Source: Hamza-Lup, Felix G. - School of Computing, Armstrong Atlantic State University Collection: Computer Technologies and Information Sciences...

  2. E-Print Network 3.0 - atlas transition radiation Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Search Powered by Explorit Topic List Advanced Search Sample search results for: atlas transition radiation Page: << < 1 2 3 4 5 > >> 1 Lund University -the ATLAS group...

  3. Prospective Study of Local Control and Late Radiation Toxicity After Intraoperative Radiation Therapy Boost for Early Breast Cancer

    SciTech Connect (OSTI)

    Chang, David W., E-mail: David.Chang@petermac.org [Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria (Australia); Marvelde, Luc te [Centre for Biostatistics and Clinical Trials, Peter MacCallum Cancer Centre, Melbourne, Victoria (Australia); Chua, Boon H. [Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Victoria (Australia); Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria (Australia)

    2014-01-01T23:59:59.000Z

    Purpose: To report the local recurrence rate and late toxicity of intraoperative radiation therapy (IORT) boost to the tumor bed using the Intrabeam System followed by external-beam whole-breast irradiation (WBI) in women with early-stage breast cancer in a prospective single-institution study. Methods and Materials: Women with breast cancer ?3 cm were recruited between February 2003 and May 2005. After breast-conserving surgery, a single dose of 5 Gy IORT boost was delivered using 50-kV x-rays to a depth of 10 mm from the applicator surface. This was followed by WBI to a total dose of 50 Gy in 25 fractions. Patients were reviewed at regular, predefined intervals. Late toxicities were recorded using the Radiation Therapy Oncology Group/European Organization for Research and Treatment of Cancer Late Radiation Morbidity Scoring systems. Results: Fifty-five patients completed both IORT boost and external-beam WBI. Median follow-up was 3.3 years (range, 1.4-4.1 years). There was no reported locoregional recurrence or death. One patient developed distant metastases. Grade 2 and 3 subcutaneous fibrosis was detected in 29 (53%) and 8 patients (15%), respectively. Conclusions: The use of IORT as a tumor bed boost using kV x-rays in breast-conserving therapy was associated with good local control but a clinically significant rate of grade 2 and 3 subcutaneous fibrosis.

  4. Intraoperative radiation therapy using mobile electron linear accelerators: Report of AAPM Radiation Therapy Committee Task Group No. 72

    SciTech Connect (OSTI)

    Sam Beddar, A.; Biggs, Peter J.; Chang Sha; Ezzell, Gary A.; Faddegon, Bruce A.; Hensley, Frank W.; Mills, Michael D. [Department of Radiation Physics, Division of Radiation Oncology, Unit 94, University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030 (United States); Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts 02114 (United States); Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599 (United States); Department of Radiation Oncology, Mayo Clinic Scottsdale, Scottsdale, Arizona 85259 (United States); Department of Radiation Oncology, University of California San Francisco, San Francisco, California 94143 (United States); Department of Radiation Oncology, University of Heidelberg, 69120 Heidelberg (Germany); Department of Radiation Oncology, James Graham Brown Cancer Center, Louisville, Kentucky 40202 (United States)

    2006-05-15T23:59:59.000Z

    Intraoperative radiation therapy (IORT) has been customarily performed either in a shielded operating suite located in the operating room (OR) or in a shielded treatment room located within the Department of Radiation Oncology. In both cases, this cancer treatment modality uses stationary linear accelerators. With the development of new technology, mobile linear accelerators have recently become available for IORT. Mobility offers flexibility in treatment location and is leading to a renewed interest in IORT. These mobile accelerator units, which can be transported any day of use to almost any location within a hospital setting, are assembled in a nondedicated environment and used to deliver IORT. Numerous aspects of the design of these new units differ from that of conventional linear accelerators. The scope of this Task Group (TG-72) will focus on items that particularly apply to mobile IORT electron systems. More specifically, the charges to this Task Group are to (i) identify the key differences between stationary and mobile electron linear accelerators used for IORT (ii) describe and recommend the implementation of an IORT program within the OR environment, (iii) present and discuss radiation protection issues and consequences of working within a nondedicated radiotherapy environment, (iv) describe and recommend the acceptance and machine commissioning of items that are specific to mobile electron linear accelerators, and (v) design and recommend an efficient quality assurance program for mobile systems.

  5. Radiation Control (Virginia)

    Broader source: Energy.gov [DOE]

    The Department of Health is responsible for regulating radiation and radioactive materials in the Commonwealth of Virginia. Although the Department's Radiation Control Program primarily focuses on...

  6. Universes with and without a center

    E-Print Network [OSTI]

    Yukio Tomozawa

    2014-08-05T23:59:59.000Z

    Two types of universe, with and without a center, are discussed; and their implications for the observed cmb (cosmic microwave background radiation) dipole are described. Theorems useful for understanding the cause for a cmb dipole are presented. Using the theorems stated and all existing data, a computation for the location of the center of the universe has been performed. In the universe without center, however, a complication arises by the appearance of the apparent center after the expansion of the universe has proceeded.

  7. University Research Program in Robotics - "Technologies for Micro-Electrical-Mechanical Systems in directed Stockpile Work (DSW) Radiation and Campaigns", Final Technical Annual Report, Project Period 9/1/06 - 8/31/07

    SciTech Connect (OSTI)

    James S. Tulenko; Carl D. Crane

    2007-12-13T23:59:59.000Z

    The University Research Program in Robotics (URPR) is an integrated group of universities performing fundamental research that addresses broad-based robotics and automation needs of the NNSA Directed Stockpile Work (DSW) and Campaigns. The URPR mission is to provide improved capabilities in robotics science and engineering to meet the future needs of all weapon systems and other associated NNSA/DOE activities.

  8. Final Report for the portion performed in the University of Illinois on the project entitled "Optimizing the Cloud-Aerosol-Radiation Ensemble Modeling System to Improve Future Climate Change Projections at Regional to Local Scales"

    SciTech Connect (OSTI)

    Liang, Xin-Zhong

    2011-01-31T23:59:59.000Z

    This is the final report for the closure of the research tasks on the project that have performed during the entire reporting period in the University of Illinois. It contains a summary of the achievements and details of key results as well as the future plan for this project to be continued in the University of Maryland.

  9. RICE UNIVERSITY ACCIDENT/INJURY REPORT

    E-Print Network [OSTI]

    Natelson, Douglas

    RICE UNIVERSITY ACCIDENT/INJURY REPORT Please Print Section A: Details of incident Injury Work Exposure to radiation Mental stress factors Noise Insect/animal bite Vehicle accident Slip

  10. university of saskatchewan alumni handbook university of

    E-Print Network [OSTI]

    Saskatchewan, University of

    university of saskatchewan alumni handbook university of saskatchewan alumni handbook university of saskatchewan alumni handbook university of saskatchewan alumni handbook university of saskatchewan alumni handbook university of saskatchewan alumni handbook university of saskatchewan alumni handbook university

  11. Radiation induced strand breakage analyzed by tunel technique

    E-Print Network [OSTI]

    Reynolds, Marissa Dawn

    2003-01-01T23:59:59.000Z

    RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to the 015ce of Graduate Studies of Texas Ad. M University in partial fu1611ment of the requirements for the dree of MASTER OF SCIENCE May... 2003 Major Subject: Health Physics RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to Texas %%:M University in partial fulfillmen of the requirements for the degree of MASTER OF SCIENCE...

  12. Radiation and Radon from Natural Stone May 7, 2008

    E-Print Network [OSTI]

    Llope, William J.

    Radiation and Radon from Natural Stone May 7, 2008 W.J. Llope Rice University, Houston, TX 77005 is "radiation" and the other is "radon." Radioactive elements, by their very nature, seek stability by decaying the outside and cause damage to cells and DNA, potentially causing cancer. Also, naturally occurring Uranium

  13. An electronic radiation of blackbody: Cosmic electron background

    E-Print Network [OSTI]

    Jian-Miin Liu

    2008-02-23T23:59:59.000Z

    The Universe owns the electronic radiation of blackbody at temperature 2.725 K, which we call the cosmic electron background. We calculate its radiation spectrum. The energy distribution of number density of electrons in the cosmic electron background becomes zero as energy goes to both zero and infinity. It has one maximum peak near the energy level of 10**(-23) J.

  14. Ris-R-1417(EN) Radiation Research

    E-Print Network [OSTI]

    Ris√ł's research reactors 16 3.4 Stable elements analyses in relation to the decommissioning of the department includes dosimetry, optically stimulated lumi- nescence, nuclear emergency preparedness-operation with Danish and foreign universities and research institutes and also with the Danish nuclear and radiation

  15. Annals of Oncology 23: 18541863, 2012 doi:10.1093/annonc/mdr536

    E-Print Network [OSTI]

    Hemminki, Akseli

    , Helsinki, Finland; 4 Stanford Prevention Research Center, Stanford University School of Medicine, Palo Alto Survival in cancer of unknown primary site: population- based analysis by site and histology K. Hemminki1. Population-based survival data are lacking regarding location and histology of metastases. Patients

  16. University Library University of Saskatchewan

    E-Print Network [OSTI]

    Saskatchewan, University of

    University Library University of Saskatchewan Core Competencies for University of Saskatchewan Librarians This document defines the basic knowledge and skills librarians at the University of Saskatchewan as reflected in Promise and Potential: The Third Integrated Plan 2012 to 2016 , University of Saskatchewan

  17. BOARD OF DIRECTORS UNIVERSITY OF CONNECTICUT HEALTH CENTER

    E-Print Network [OSTI]

    Oliver, Douglas L.

    OF DENTAL MEDICINE.* 4. REVIEW AND APPROVAL OF A SERVICE CONTRACT RENEWAL WITH ELEKTA ONCOLOGY SYSTEMS, INC

  18. Low Background Radiation Experiment Yields Interesting Preliminary Results

    Broader source: Energy.gov [DOE]

    CARLSBAD, N.M., May 18, 2011 Ė New Mexico State University?s Low Background Radiation Experiment (LBRE), which takes place 2,150 feet below the earth?s surface at the Waste Isolation Pilot Plant, recently released some results about the project?s first two years of experimentation.

  19. Plutonium radiation surrogate

    DOE Patents [OSTI]

    Frank, Michael I. (Dublin, CA)

    2010-02-02T23:59:59.000Z

    A self-contained source of gamma-ray and neutron radiation suitable for use as a radiation surrogate for weapons-grade plutonium is described. The source generates a radiation spectrum similar to that of weapons-grade plutonium at 5% energy resolution between 59 and 2614 keV, but contains no special nuclear material and emits little .alpha.-particle radiation. The weapons-grade plutonium radiation surrogate also emits neutrons having fluxes commensurate with the gamma-radiation intensities employed.

  20. A novel nanometric DNA thin film as a sensor for alpha radiation

    E-Print Network [OSTI]

    Cai, Long

    of Energy Science, Sungkyunkwan University, Suwon 440≠746, Korea. The unexpected nuclear accidents have radiation. Due to the high linear energy transfer value, sensors designed to detect such radiation require be one of promising candidates for the development of online radiation sensors. T he Fukushima nuclear

  1. Radiation Protection Policy Section 1.8 1.8. Training

    E-Print Network [OSTI]

    Mumby, Peter J.

    Radiation Protection Policy Section 1.8 1.8. Training 1.8.1.All persons working with ionising radiations within the University of Exeter must receive training in the work they are to undertake. 1.8.2.General radiation protection and safety practice This involves a thorough study of the Local Rules

  2. Calculating Radiative Heat Transfer in an Axisymmetric Closed Chamber: An Application

    E-Print Network [OSTI]

    New York at Stoney Brook, State University of

    Calculating Radiative Heat Transfer in an Axisymmetric Closed Chamber: An Application to Crystal University of New York at Stony Brook Stony Brook N.Y. 11794 ABSTRACT Radiative heat transfer plays simulating radiative heat transfer in the crystal and in the region above the melt containing gas under

  3. LSU School of Dentistry Laser Safety : Clinical SAFETY PROCEDURES FOR LASER (NON-IONIZING) RADIATION

    E-Print Network [OSTI]

    system is one that is considered to be incapable of producing damaging radiation levels during operation-IONIZING) RADIATION 1. PURPOSE This procedure sets forth the Louisiana State University (LSU) System non-ionizing radiation safety policy and procedural requirements of the program. The use of the term non

  4. Impact of Friction and Scale-Dependent Initial Stress on Radiated Energy-Moment Scaling

    E-Print Network [OSTI]

    Shaw, Bruce E.

    . Shaw Lamont­Doherty Earth Observatory, Columbia University, New York, USA The radiated energy coming271 Impact of Friction and Scale-Dependent Initial Stress on Radiated Energy-Moment Scaling Bruce E of elucidat- ing their radiated energy-moment scaling. We find, contrary to expectations, that apparent stress

  5. WASTE DISPOSAL SECTION CORNELL UNIVERSITY

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    radioactive products as regular trash. All packages must be free of contamination, radiation symbols2/07 WASTE DISPOSAL SECTION CORNELL UNIVERSITY PROCEDURE for DISPOSAL of RADIOACTIVE MATERIALS This procedure has been developed to ensure the safety of those individuals who handle radioactive waste

  6. Radiator Labs | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of steam buildings. Radiator Labs developed a mechanism that allows heating systems to control heat transfer at each radiator. The Radiator Labs design utilizes an...

  7. Tachyons and Gravitational Cherenkov Radiation

    E-Print Network [OSTI]

    Schwartz, Charles

    2011-01-01T23:59:59.000Z

    AND GRAVITATIONAL CHERENKOV RADIATION CHARLES SCHWARTZwould emit gravitational radiation. It is very small.gravitational waves; Cherenkov radiation. In a recent work,

  8. Radiation Safety Program Annual Review

    E-Print Network [OSTI]

    Lyubomirsky, Ilya

    ........................................................................10 AREA RADIATION SURVEYS AND CONTAMINATION CONTROL...........................................11.....................................................................................................13 RADIOACTIVE WASTE MANAGEMENT meetings of the Radiation Safety Committee where new users and uses of radioactive materials, radiation

  9. WI Radiation Protection

    Broader source: Energy.gov [DOE]

    This statute seeks to regulate radioactive materials, to encourage the constructive uses of radiation, and to prohibit and prevent exposure to radiation in amounts which are or may be detrimental...

  10. Maryland Radiation Act (Maryland)

    Broader source: Energy.gov [DOE]

    The policy of the state is to provide for the constructive use of radiation and control radiation emissions. This legislation authorizes the Department of the Environment to develop comprehensive...

  11. Effect of Solar Radiation on the Optical Properties and Molecular Composition of Laboratory Proxies of Atmospheric Brown Carbon

    E-Print Network [OSTI]

    Nizkorodov, Sergey

    Effect of Solar Radiation on the Optical Properties and Molecular Composition of Laboratory Proxies A. Nizkorodov*, Department of Chemistry, University of California, Irvine, California 92697, United

  12. RADIONUCLIDE RADIATION PROTECTION

    E-Print Network [OSTI]

    Healy, Kevin Edward

    COPYRIGHT 2002 Nuclear Technology Publishing #12;3 #12;4 #12;5 Radiation Protection Dosimetry Vol. 98, No'Energie Atomique, CEA/Saclay, France ISBN 1 870965 87 6 RADIATION PROTECTION DOSIMETRY Vol. 98 No 1, 2002 Published by Nuclear Technology Publishing #12;RADIONUCLIDE AND RADIATION PROTECTION DATA HANDBOOK 2nd Edition (2002

  13. Radiation Damping with Inhomogeneous

    E-Print Network [OSTI]

    Augustine, Mathew P.

    Radiation Damping with Inhomogeneous Broadening: Limitations of the Single Bloch Vector Model of inhomoge- neous broadening on radiation damping of free precession signals have been described using 13: 1 7, 2001 KEY WORDS: radiation damping; FID shape; inhomogeneous broadening The phenomenon

  14. astroph/9507030 Gravitational Radiation

    E-Print Network [OSTI]

    Fygenson, Deborah Kuchnir

    astro­ph/9507030 10 Jul 95 Gravitational Radiation and Very Long Baseline Interferometry Ted Pyne of gravitational radiation on astrometric observations. We derive an equation for the time delay measured by two antennae observing the same source in an Einstein­de Sitter spacetime containing gravitational radiation

  15. Radiation Processing -an overview

    E-Print Network [OSTI]

    of radiation · Facilities ­ Gamma ­ electrons ­ X-ray ­ Safety · Sterilisation of medical devices · Food irradiation · Material modification #12;3 Content ­ Part 2 · Environmental applications · Other applications Radiation · Energy in the form of waves or moving subatomic particles Irradiation · Exposure to radiation

  16. Dissecting Soft Radiation with Factorization

    E-Print Network [OSTI]

    Iain W. Stewart; Frank J. Tackmann; Wouter J. Waalewijn

    2015-02-10T23:59:59.000Z

    An essential part of high-energy hadronic collisions is the soft hadronic activity that underlies the primary hard interaction. It includes soft radiation from the primary hard partons, secondary multiple parton interactions (MPI), and factorization-violating effects. The invariant mass spectrum of the leading jet in $Z$+jet and $H$+jet events is directly sensitive to these effects, and we use a QCD factorization theorem to predict its dependence on the jet radius $R$, jet $p_T$, jet rapidity, and partonic process for both the perturbative and nonperturbative components of primary soft radiation. We prove that the nonperturbative contributions involve only odd powers of $R$, and the linear $R$ term is universal for quark and gluon jets. The hadronization model in PYTHIA8 agrees well with these properties. The perturbative soft initial state radiation (ISR) has a contribution that depends on the jet area in the same way as the underlying event, but this degeneracy is broken by dependence on the jet $p_T$. The size of this soft ISR contribution is proportional to the color state of the initial partons, yielding the same positive contribution for $gg\\to Hg$ and $gq\\to Zq$, but a negative interference contribution for $q\\bar q\\to Z g$. Hence, measuring these dependencies allows one to separate hadronization, soft ISR, and MPI contributions in the data.

  17. Radiation-dominated area metric cosmology

    E-Print Network [OSTI]

    Frederic P. Schuller; Mattias N. R. Wohlfarth

    2007-06-12T23:59:59.000Z

    We provide further crucial support for a refined, area metric structure of spacetime. Based on the solution of conceptual issues, such as the consistent coupling of fermions and the covariant identification of radiation fields on area metric backgrounds, we show that the radiation-dominated epoch of area metric cosmology is equivalent to that epoch in standard Einstein cosmology. This ensures, in particular, successful nucleosynthesis. This surprising result complements the previously derived prediction of a small late-time acceleration of an area metric universe.

  18. Radiation Shielding and Radiological Protection

    E-Print Network [OSTI]

    Shultis, J. Kenneth

    Radiation Shielding and Radiological Protection J. Kenneth Shultis Richard E. Faw Department@triad.rr.com Radiation Fields and Sources ................................................ . Radiation Field Variables........................................................... .. Direction and Solid Angle Conventions ......................................... .. Radiation Fluence

  19. Effects of gamma radiation on Serratia marcescens; a comparison of effects of two different exposure rates

    E-Print Network [OSTI]

    Moore, Christy Annette

    1972-01-01T23:59:59.000Z

    'Donovan, Effect of gamma radiation on Serratia marcescens: Comparison of the radiosensi- tivity of pigmented and nonpigmented cells. Radiation Res, 48, 40-52 (1971). 18. Alison P. Casarett, Radiation ~Biolo . p. 159. Prentice-Hall, Inc. , Englewood Cliffs... EFFECTS OF GAMMA RADIATION ON SL'RNATIA MARCESCENS A COMPARISON OF EFFECTS OF TWO DIFFERENT EXPOSURE RATES A Thesis by CHRISTY ANNETTE MOORE Submitted to the Graduate College of Texas ARM University in partial fulfillment of the requirements...

  20. TERSat: Trapped Energetic Radiation Satellite

    E-Print Network [OSTI]

    Clements, Emily B.

    2012-01-01T23:59:59.000Z

    Radiation damage caused by interactions with high-energy particles in the Van Allen Radiation Belts is a leading

  1. Whole-Pelvic Nodal Radiation Therapy in the Context of Hypofractionation for High-Risk Prostate Cancer Patients: A Step Forward

    SciTech Connect (OSTI)

    Kaidar-Person, Orit [Division of Oncology, Rambam Health Care Campus, Haifa (Israel)] [Division of Oncology, Rambam Health Care Campus, Haifa (Israel); Roach, Mack [Department of Radiation Oncology, University of California, San Francisco, San Francisco, California (United States)] [Department of Radiation Oncology, University of California, San Francisco, San Francisco, California (United States); Crťhange, Gilles, E-mail: gcrehange@cgfl.fr [Department of Radiation Oncology, Georges-FranÁois Leclerc Cancer Center, Dijon (France)] [Department of Radiation Oncology, Georges-FranÁois Leclerc Cancer Center, Dijon (France)

    2013-07-15T23:59:59.000Z

    Given the low ?/? ratio of prostate cancer, prostate hypofractionation has been tested through numerous clinical studies. There is a growing body of literature suggesting that with high conformal radiation therapy and even with more sophisticated radiation techniques, such as high-dose-rate brachytherapy or image-guided intensity modulated radiation therapy, morbidity associated with shortening overall treatment time with higher doses per fraction remains low when compared with protracted conventional radiation therapy to the prostate only. In high-risk prostate cancer patients, there is accumulating evidence that either dose escalation to the prostate or hypofractionation may improve outcome. Nevertheless, selected patients who have a high risk of lymph node involvement may benefit from whole-pelvic radiation therapy (WPRT). Although combining WPRT with hypofractionated prostate radiation therapy is feasible, it remains investigational. By combining modern advances in radiation oncology (high-dose-rate prostate brachytherapy, intensity modulated radiation therapy with an improved image guidance for soft-tissue sparing), it is hypothesized that WPRT could take advantage of recent results from hypofractionation trials. Moreover, the results from hypofractionation trials raise questions as to whether hypofractionation to pelvic lymph nodes with a high risk of occult involvement might improve the outcomes in WPRT. Although investigational, this review discusses the challenging idea of WPRT in the context of hypofractionation for patients with high-risk prostate cancer.

  2. Radiation Related Terms Basic Terms

    E-Print Network [OSTI]

    Vallino, Joseph J.

    Radiation Related Terms Basic Terms Radiation Radiation is energy in transit in the form of high not carry enough energy to separate molecules or remove electrons from atoms. Ionizing radiation Ionizing radiation is radiation with enough energy so that during an interaction with an atom, it can remove tightly

  3. Radiation: Facts, Risks and Realities

    E-Print Network [OSTI]

    of Radiation 3 Understanding Radiation Risks 6 Naturally Occurring (Background) Radiation 7 Man-Made Radiation, beta particles and gamma rays. Other types, such as x-rays, can occur naturally or be machine-produced. Scientists have also learned that radiation sources are naturally all around us. Radiation can come from

  4. Departments of Basic Oncology, Preventive Oncology and

    E-Print Network [OSTI]

    Ozlem Bitisik; Hakan Camlica; Derya Duranyildiz; Faruk Tas; Sidika Kurul; Nejat Dalay

    2002-01-01T23:59:59.000Z

    Malignant melanoma is one of the most rapidly increasing cancer types, and patients with metastatic disease have a very poor prognosis. Detection of metastatic melanoma cells in circulation may aid the clinician in assessing tumor progression, metastatic potential, and response to therapy. Tyrosinase is a key enzyme in melanine biosynthesis. The gene is actively expressed in melanocytes and melanoma cells. Melan A is a differentiation antigen that is expressed in melanocytes. The presence of these molecules in blood is considered a marker for circulating melanoma cells. In this study, we analyzed the usefulness of this marker combination in evaluating the response to therapy in the blood of 30 patients with malignant melanoma. Circulating cells were detected by a reverse-transcriptasepolymerase-chain reaction. The tyrosinase expression was observed in 9 (30%) patients and Melan A in 19 (63.3%) patients before therapy. Following treatment, the tyrosinase mRNA was detected in only one patient, while Melan A transcripts were still present in 14 patients. We suggest that this molecular assay can identify circulating melanoma cells that express melanoma-associated antigens and may provide an early indication of therapy effectiveness.

  5. Drexel University Temperature Sensors

    SciTech Connect (OSTI)

    K. L. Davis; D. L. Knudson; J. L. Rempe; B. M. Chase

    2014-09-01T23:59:59.000Z

    This document summarizes background information and presents results related to temperature measurements in the Advanced Test Reactor (ATR) National Scientific User Facility (NSUF) Drexel University Project 31091 irradiation. The objective of this test was to assess the radiation performance of new ceramic materials for advanced reactor applications. Accordingly, irradiations of transition metal carbides and nitrides were performed using the Hydraulic Shuttle Irradiation System (HSIS) in the B-7 position and in static capsules inserted into the A-3 and East Flux Trap Position 5 locations of the ATR.

  6. Impact of Quality Assurance Rounds in a Canadian Radiation Therapy Department

    SciTech Connect (OSTI)

    Lefresne, Shilo; Olivotto, Ivo A.; Joe, Howard; Blood, Paul A. [Radiotherapy Department, BC Cancer Agency, Vancouver Island Centre, Vancouver, British Columbia (Canada) [Radiotherapy Department, BC Cancer Agency, Vancouver Island Centre, Vancouver, British Columbia (Canada); Radiotherapy Department, University of British Columbia, Vancouver, British Columbia (Canada); Olson, Robert A., E-mail: rolson2@bccancer.bc.ca [Radiotherapy Department, University of British Columbia, Vancouver, British Columbia (Canada); Radiotherapy Department, BC Cancer Agency, Centre for the North, Prince George, British Columbia (Canada)

    2013-03-01T23:59:59.000Z

    Purpose: Quality assurance (QA) programs aim to identify inconsistencies that may compromise patient care. Radiation treatment planning is a well-documented source of variation in radiation oncology, leading many organizations to recommend the implementation of QA rounds in which radiation therapy plans are peer reviewed. This study evaluates the outcome of QA rounds that have been conducted by a radiation therapy department since 2004. Methods and Materials: Prospectively documented records of QA rounds, from 2004 to 2010, were obtained. During rounds, randomly selected radiation therapy plans were peer reviewed and assigned a grade of A (adequate), B (minor suggestions of change to a plan for a future patient), or C (significant change required before the next fraction). The proportion of plans that received each recommendation was calculated, and the relationship between recommendations for each plan, tumor site, and mean years of experience of the radiation oncologist (RO) were explored. Chart reviews were performed for each plan that received a C. Results: During the study period, 1247 plans were evaluated; 6% received a B and 1% received a C. The mean RO years of experience were lower for plans graded C versus those graded A (P=.02). The tumor sites with the highest proportion of plans graded B or C were gastrointestinal (14%), lung (13%), and lymphoma (8%). The most common reasons for plans to receive a grade of C were inadequate target volume coverage (36%), suboptimal dose or fractionation (27%), errors in patient setup (27%), and overtreatment of normal tissue (9%). Conclusions: This study demonstrated that QA rounds are feasible and an important element of a radiation therapy department's QA program. Through peer review, plans that deviate from a department's expected standard can be identified and corrected. Additional benefits include identifying patterns of practice that may contribute to inconsistencies in treatment planning and the continuing education of staff members who attend.

  7. Charles Darwin University Flinders University Griffith University James Cook University La Trobe University Murdoch University The University of Newcastle Biography for GLOVER, Professor Barney

    E-Print Network [OSTI]

    University Murdoch University The University of Newcastle Biography for GLOVER, Professor Barney Vice Chancellor, Charles Darwin University Professor Barney Glover is Vice-Chancellor of Charles Darwin University

  8. RHOBOT: Radiation hardened robotics

    SciTech Connect (OSTI)

    Bennett, P.C.; Posey, L.D. [Sandia National Labs., Albuquerque, NM (United States)

    1997-10-01T23:59:59.000Z

    A survey of robotic applications in radioactive environments has been conducted, and analysis of robotic system components and their response to the varying types and strengths of radiation has been completed. Two specific robotic systems for accident recovery and nuclear fuel movement have been analyzed in detail for radiation hardness. Finally, a general design approach for radiation-hardened robotics systems has been developed and is presented. This report completes this project which was funded under the Laboratory Directed Research and Development program.

  9. Atomic Radiation (Illinois)

    Broader source: Energy.gov [DOE]

    This article states permissible levels of radiation in unrestricted areas, environmental standards for uranium fuel cycle and information about notification of incidents.

  10. Radiation Hazards Program (Minnesota)

    Broader source: Energy.gov [DOE]

    These regulations, promulgated by the Department of Health, set allowable radiation standards and mitigation practices, as well as procedures for the transportation of hazardous material.

  11. Rotating bubble membrane radiator

    DOE Patents [OSTI]

    Webb, Brent J. (West Richland, WA); Coomes, Edmund P. (West Richland, WA)

    1988-12-06T23:59:59.000Z

    A heat radiator useful for expelling waste heat from a power generating system aboard a space vehicle is disclosed. Liquid to be cooled is passed to the interior of a rotating bubble membrane radiator, where it is sprayed into the interior of the bubble. Liquid impacting upon the interior surface of the bubble is cooled and the heat radiated from the outer surface of the membrane. Cooled liquid is collected by the action of centrifical force about the equator of the rotating membrane and returned to the power system. Details regarding a complete space power system employing the radiator are given.

  12. Appendix F. Radiation Appendix F. Radiation F-3

    E-Print Network [OSTI]

    Pennycook, Steve

    from natural and human-made sources. People are exposed to naturally occurring radiation constantlyAppendix F. Radiation #12;#12;Appendix F. Radiation F-3 Appendix F. Radiation This appendix presents basic facts about radiation. The information is intended to be a basis for understanding

  13. Appendix F: Radiation Appendix F: Radiation F-3

    E-Print Network [OSTI]

    Pennycook, Steve

    . People are exposed to naturally occurring radiation constantly. For example, cosmic radiation; radon effects on the environment and biological systems. Radiation comes from natural and human-made sourcesAppendix F: Radiation #12;#12;Appendix F: Radiation F-3 P P P E E E N NN HYDROGEN ATOM DEUTERIUM

  14. Appendix F: Radiation Appendix F: Radiation F-3

    E-Print Network [OSTI]

    Pennycook, Steve

    to naturally occurring radiation constantly. For example, cosmic radiation; radon in air; potassium in food on the environment and biological systems. Radiation comes from natural and human-made sources. People are exposedAppendix F: Radiation #12;#12;Appendix F: Radiation F-3 Fig. F.1. The hydrogen atom and its

  15. Appendix G. Radiation Appendix G. Radiation G-3

    E-Print Network [OSTI]

    Pennycook, Steve

    from natural and human-made sources. People are exposed to naturally occurring radiation constantlyAppendix G. Radiation #12;#12;Appendix G. Radiation G-3 Appendix G. Radiation This appendix presents basic facts about radiation. The information is intended to be a basis for un- derstanding

  16. Appendix F. Radiation Appendix F. Radiation F-3

    E-Print Network [OSTI]

    Pennycook, Steve

    from natural and human-made sources. People are exposed to naturally occurring radiation constantlyAppendix F. Radiation #12;#12;Appendix F. Radiation F-3 Appendix F. Radiation This appendix presents basic facts about radiation. The information is intended to be a basis for un- derstanding

  17. Investigation of realistic PET simulations incorporating tumor patient's specificity using anthropomorphic models: Creation of an oncology database

    SciTech Connect (OSTI)

    Papadimitroulas, Panagiotis; Efthimiou, Nikos; Nikiforidis, George C.; Kagadis, George C. [Department of Medical Physics, School of Medicine, University of Patras, Rion, GR 265 04 (Greece)] [Department of Medical Physics, School of Medicine, University of Patras, Rion, GR 265 04 (Greece); Loudos, George [Department of Biomedical Engineering, Technological Educational Institute of Athens, Ag. Spyridonos Street, Egaleo GR 122 10, Athens (Greece)] [Department of Biomedical Engineering, Technological Educational Institute of Athens, Ag. Spyridonos Street, Egaleo GR 122 10, Athens (Greece); Le Maitre, Amandine; Hatt, Mathieu; Tixier, Florent; Visvikis, Dimitris [Medical Information Processing Laboratory (LaTIM), National Institute of Health and Medical Research (INSERM), 29609 Brest (France)] [Medical Information Processing Laboratory (LaTIM), National Institute of Health and Medical Research (INSERM), 29609 Brest (France)

    2013-11-15T23:59:59.000Z

    Purpose: The GATE Monte Carlo simulation toolkit is used for the implementation of realistic PET simulations incorporating tumor heterogeneous activity distributions. The reconstructed patient images include noise from the acquisition process, imaging system's performance restrictions and have limited spatial resolution. For those reasons, the measured intensity cannot be simply introduced in GATE simulations, to reproduce clinical data. Investigation of the heterogeneity distribution within tumors applying partial volume correction (PVC) algorithms was assessed. The purpose of the present study was to create a simulated oncology database based on clinical data with realistic intratumor uptake heterogeneity properties.Methods: PET/CT data of seven oncology patients were used in order to create a realistic tumor database investigating the heterogeneity activity distribution of the simulated tumors. The anthropomorphic models (NURBS based cardiac torso and Zubal phantoms) were adapted to the CT data of each patient, and the activity distribution was extracted from the respective PET data. The patient-specific models were simulated with the Monte Carlo Geant4 application for tomography emission (GATE) in three different levels for each case: (a) using homogeneous activity within the tumor, (b) using heterogeneous activity distribution in every voxel within the tumor as it was extracted from the PET image, and (c) using heterogeneous activity distribution corresponding to the clinical image following PVC. The three different types of simulated data in each case were reconstructed with two iterations and filtered with a 3D Gaussian postfilter, in order to simulate the intratumor heterogeneous uptake. Heterogeneity in all generated images was quantified using textural feature derived parameters in 3D according to the ground truth of the simulation, and compared to clinical measurements. Finally, profiles were plotted in central slices of the tumors, across lines with heterogeneous activity distribution for visual assessment.Results: The accuracy of the simulated database was assessed against the original clinical images. The PVC simulated images matched the clinical ones best. Local, regional, and global features extracted from the PVC simulated images were closest to the clinical measurements, with the exception of the size zone variability and the mean intensity values, where heterogeneous tumors showed better reproducibility. The profiles on PVC simulated tumors after postfiltering seemed to represent the more realistic heterogeneous regions with respect to the clinical reference.Conclusions: In this study, the authors investigated the input activity map heterogeneity in the GATE simulations of tumors with heterogeneous activity distribution. The most realistic heterogeneous tumors were obtained by inserting PVC activity distributions from the clinical image into the activity map of the simulation. Partial volume effect (PVE) can play a crucial role in the quantification of heterogeneity within tumors and have an important impact on applications such as patient follow-up during treatment and assessment of tumor response to therapy. The development of such a database incorporating patient anatomical and functional variability can be used to evaluate new image processing or analysis algorithms, while providing control of the ground truth, which is not available when dealing with clinical datasets. The database includes all images used and generated in this study, as well as the sinograms and the attenuation phantoms for further investigation. It is freely available to the interested reader of the journal at http://www.med.upatras.gr/oncobase/.

  18. OLD DOMINION UNIVERSITY University Policies and Procedures

    E-Print Network [OSTI]

    AND ADMINISTRATOR RECRUITMENT FUNDING PROCEDURE Statement: University Recruitment Budget (1) The university6010 - 1 OLD DOMINION UNIVERSITY University Policies and Procedures 6010 - FACULTY maintains a central budget, called the University Recruitment Budget, for the support of essential

  19. 1 Columbia University--The University Seminars COLUMBIA UNIVERSITY

    E-Print Network [OSTI]

    Champagne, Frances A.

    1 Columbia University--The University Seminars COLUMBIA UNIVERSITY T H E U N I V E R S I T Y S E M. Belknap Professor Emeritus of Russian, Columbia University, Director Emeritus of The University Seminars, Columbia University Susan Boynton Associate Professor of Music, Columbia University Ester Fuchs Professor

  20. MINERVA - A Multi-Modal Radiation Treatment Planning System

    SciTech Connect (OSTI)

    D. E. Wessol; C. A. Wemple; D. W. Nigg; J. J. Cogliati; M. L. Milvich; C. Frederickson; M. Perkins; G. A. Harkin

    2004-10-01T23:59:59.000Z

    Recently, research efforts have begun to examine the combination of BNCT with external beam photon radiotherapy (Barth et al. 2004). In order to properly prepare treatment plans for patients being treated with combinations of radiation modalities, appropriate planning tools must be available. To facilitiate this, researchers at the Idaho National Engineering and Environmental Laboratory (INEEL)and Montana State University (MSU) have undertaken development of a fully multi-modal radiation treatment planning system.

  1. The optimization of solar radiation upon a rectangular building

    E-Print Network [OSTI]

    Ingle, James Allen

    1973-01-01T23:59:59.000Z

    THE OPTIMIZATION OF SOLAR RADIATION UPON A RECTANGULAR BUILDING A Thesis by JAMES ALLEN INGLF. Submitted to the Graduate College of Texas AAM University in Partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 19... 3 Major Subjeoti Meteorology THE OPTIMIZATION OF SOLAR RADIATION UPON A RECTANGULAR BUILDING A Thesis by JAILS ALLEN INGLE Approved as to style and content bye Cha an of ittee Mr, ' ohn F, Griffiths Member Dro Robert CD Runnels Head...

  2. SCIENTIFIC CORRESPONDENCE Radiation doses

    E-Print Network [OSTI]

    Shlyakhter, Ilya

    SCIENTIFIC CORRESPONDENCE Radiation doses and cancert-A T. w- - SIR- In February 1990, the Soviet. Nikipelov et al. published in g Priroda (Nature)' the radiation doses for each year, averaged over environmental impact on the Gulf waters is rapidly ex- ported to the Arabian Sea and then to the Indian Ocean

  3. Radiative Flux Analysis

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Long, Chuck [NOAA

    The Radiative Flux Analysis is a technique for using surface broadband radiation measurements for detecting periods of clear (i.e. cloudless) skies, and using the detected clear-sky data to fit functions which are then used to produce continuous clear-sky estimates. The clear-sky estimates and measurements are then used in various ways to infer cloud macrophysical properties.

  4. Radiation-resistant microorganism

    DOE Patents [OSTI]

    Fliermans, Carl B.

    2010-06-15T23:59:59.000Z

    An isolated and purified bacterium is provided which was isolated from a high-level radioactive waste site of mixed waste. The isolate has the ability to degrade a wide variety of organic contaminants while demonstrating high tolerance to ionizing radiation. The organism is uniquely suited to bioremediation of a variety or organic contaminants while in the presence of ionizing radiation.

  5. In vivo cancer diagnosis with optical spectroscopy and acoustically induced blood stasis using a murine MCa35 model

    E-Print Network [OSTI]

    Parker, Kevin J.

    , New York Vladimir Misic Department of Radiation Oncology, University of Rochester, Rochester, New York Lydia Liao Department of Imaging Sciences, University of Rochester, Rochester, New York Kevin Parker School of Engineering and Applied Science, University of Rochester, Rochester, New York Bruce M. Fenton

  6. Nuclear radiation actuated valve

    DOE Patents [OSTI]

    Christiansen, David W. (Kennewick, WA); Schively, Dixon P. (Richland, WA)

    1985-01-01T23:59:59.000Z

    A nuclear radiation actuated valve for a nuclear reactor. The valve has a valve first part (such as a valve rod with piston) and a valve second part (such as a valve tube surrounding the valve rod, with the valve tube having side slots surrounding the piston). Both valve parts have known nuclear radiation swelling characteristics. The valve's first part is positioned to receive nuclear radiation from the nuclear reactor's fuel region. The valve's second part is positioned so that its nuclear radiation induced swelling is different from that of the valve's first part. The valve's second part also is positioned so that the valve's first and second parts create a valve orifice which changes in size due to the different nuclear radiation caused swelling of the valve's first part compared to the valve's second part. The valve may be used in a nuclear reactor's core coolant system.

  7. Radiative and climate impacts of absorbing aerosols

    E-Print Network [OSTI]

    Zhu, Aihua

    2010-01-01T23:59:59.000Z

    V. Ramanathan (2008), Solar radiation budget and radiativeV. Ramanathan (2008), Solar radiation budget and radiativeapproximation for solar radiation in the NCAR Community

  8. A Population-Based Study of the Fractionation of Postlumpectomy Breast Radiation Therapy

    SciTech Connect (OSTI)

    Ashworth, Allison [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada) [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada); Cancer Center of Southeastern Ontario, Kingston, Ontario (Canada); Kong, Weidong [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada)] [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada); Whelan, Timothy [Juravinski Cancer Center, Hamilton, Ontario (Canada)] [Juravinski Cancer Center, Hamilton, Ontario (Canada); Mackillop, William J., E-mail: william.mackillop@krcc.on.ca [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada)

    2013-05-01T23:59:59.000Z

    Purpose: The optimal fractionation schedule of post lumpectomy radiation therapy remains controversial. The objective of this study was to describe the fractionation of post-lumpectomy radiation therapy (RT) in Ontario, before and after the seminal Ontario Clinical Oncology Group (OCOG) trial, which showed the equivalence of 16- and 25-fraction schedules. Methods and Materials: This was a retrospective cohort study conducted by linking electronic treatment records to a population-based cancer registry. The study population included all patients who underwent lumpectomy for invasive breast cancer in Ontario, Canada, between 1984 and 2008. Results: Over the study period, 41,747 breast cancer patients received post lumpectomy radiation therapy to the breast only. Both 16- and 25-fraction schedules were commonly used throughout the study period. In the early 1980s, shorter fractionation schedules were used in >80% of cases. Between 1985 and 1995, the proportion of patients treated with shorter fractionation decreased to 48%. After completion of the OCOG trial, shorter fractionation schemes were once again widely adopted across Ontario, and are currently used in about 71% of cases; however, large intercenter variations in fractionation persisted. Conclusions: The use of shorter schedules of post lumpectomy RT in Ontario increased after completion of the OCOG trial, but the trial had a less normative effect on practice than expected.

  9. Radiation-induced complications in prostate cancer patients treated with radiotherapy

    SciTech Connect (OSTI)

    Azuddin, A. Yusof [School of Applied Physics, Faculty of Sciences and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia and Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 53000 Kuala Lumpur (Malaysia); Rahman, I. Abdul; Mohamed, F. [School of Applied Physics, Faculty of Sciences and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor (Malaysia); Siah, N. J. [Faculty of Health Sciences, Universiti Kebangsaan Malaysia, 53000 Kuala Lumpur (Malaysia); Saadc, M. [Department of Oncology, University Malaya Medical Center, 50603 Kuala Lumpur (Malaysia); Ismail, F. [Department of Oncology and Radiotherapy, Universiti Kebangsaan Malaysia Medical Centre, 56000 Cheras, Kuala Lumpur (Malaysia)

    2014-09-03T23:59:59.000Z

    The purpose of the study is to determine the relationship between radiation-induced complications with dosimetric and radiobiological parameters for prostate cancer patients that underwent the conformal radiotherapy treatment. 17 prostate cancer patients that have been treated with conformal radiotherapy were retrospectively analysed. The dosimetric data was retrieved in the form of dose-volume histogram (DVH) from Radiotherapy Treatment Planning System. The DVH was utilised to derived Normal Tissue Complication Probability (NTCP) in radiobiological data. Follow-up data from medical records were used to grade the occurrence of acute gastrointestinal (GI) and genitourinary (GU) complications using Radiation Therapy Oncology Group (RTOG) scoring system. The chi-square test was used to determine the relationship between radiation-induced complication with dosimetric and radiobiological parameters. 8 (47%) and 7 (41%) patients were having acute GI and GU complications respectively. The acute GI complication can be associated with V60{sub rectum}, rectal mean dose and NTCP{sub rectum} with p-value of 0.016, 0.038 and 0.049 respectively. There are no significant relationships of acute GU complication with dosimetric and radiobiological variables. Further study can be done by increase the sample size and follow up duration for deeper understanding of the factors that effecting the GU and GI complication in prostate cancer radiotherapy.

  10. Developing Quality Assurance Processes for Image-Guided Adaptive Radiation Therapy

    SciTech Connect (OSTI)

    Yan Di [Department of Radiation Oncology, William Beaumont Hospital, Royal Oak, MI (United States)], E-mail: dyan@beaumont.edu

    2008-05-01T23:59:59.000Z

    Quality assurance has long been implemented in radiation treatment as systematic actions necessary to provide adequate confidence that the radiation oncology service will satisfy the given requirements for quality care. The existing reports from the American Association of Physicists in Medicine Task Groups 40 and 53 have provided highly detailed QA guidelines for conventional radiotherapy and treatment planning. However, advanced treatment processes recently developed with emerging high technology have introduced new QA requirements that have not been addressed previously in the conventional QA program. Therefore, it is necessary to expand the existing QA guidelines to also include new considerations. Image-guided adaptive radiation therapy (IGART) is a closed-loop treatment process that is designed to include the individual treatment information, such as patient-specific anatomic variation and delivered dose assessed during the therapy course in treatment evaluation and planning optimization. Clinical implementation of IGART requires high levels of automation in image acquisition, registration, segmentation, treatment dose construction, and adaptive planning optimization, which brings new challenges to the conventional QA program. In this article, clinical QA procedures for IGART are outlined. The discussion focuses on the dynamic or four-dimensional aspects of the IGART process, avoiding overlap with conventional QA guidelines.

  11. Coherent Radiation in an Undulator

    E-Print Network [OSTI]

    Chin, Y.H.

    2011-01-01T23:59:59.000Z

    solving the particle-radiation system in a self-consistentto clarify the coherent radiation mechanism. References 1.the Proceedings Coherent Radiation in an Undulator Y,H. Chin

  12. The Properties of Undulator Radiation

    E-Print Network [OSTI]

    Howells, M.R.

    2011-01-01T23:59:59.000Z

    of a Dedicated Synchrotron Radiation Facility," IEEE Trans.1983), "Characteristics of Synchrotron Radiation and of itsHandbook on Synchrotron Radiation, E. -E. Koch.1A. 65-172,

  13. DIMACS Center Rutgers University

    E-Print Network [OSTI]

    Hopkins University Andrew Patrick, NRC Canada Norman Sadeh, Carnegie Mellon University Working Group University Mark Ackerman, University of Michigan Fabian Monrose, Johns Hopkins University Andrew Patrick, NRC Canada Norman Sadeh, Carnegie Mellon University Workshop: Cryptography: Theory Meets Practice Dates

  14. ADMINISTRATIVE UNIVERSITY POLICY

    E-Print Network [OSTI]

    ADMINISTRATIVE UNIVERSITY POLICY FACULTY UNIVERSITY POLICY STUDENT UNIVERSITY POLICY Issue stakeholder list "Log-In" of Proposed University Policy with the University Compliance Committee (UCC) UCC identifies which track (i.e., Administrative, Faculty, or Student) the proposed University Policy

  15. SYNCHROTRON RADIATION SOURCES

    SciTech Connect (OSTI)

    HULBERT,S.L.; WILLIAMS,G.P.

    1998-07-01T23:59:59.000Z

    Synchrotron radiation is a very bright, broadband, polarized, pulsed source of light extending from the infrared to the x-ray region. It is an extremely important source of Vacuum Ultraviolet radiation. Brightness is defined as flux per unit area per unit solid angle and is normally a more important quantity than flux alone particularly in throughput limited applications which include those in which monochromators are used. It is well known from classical theory of electricity and magnetism that accelerating charges emit electromagnetic radiation. In the case of synchrotron radiation, relativistic electrons are accelerated in a circular orbit and emit electromagnetic radiation in a broad spectral range. The visible portion of this spectrum was first observed on April 24, 1947 at General Electric's Schenectady facility by Floyd Haber, a machinist working with the synchrotron team, although the first theoretical predictions were by Lienard in the latter part of the 1800's. An excellent early history with references was presented by Blewett and a history covering the development of the utilization of synchrotron radiation was presented by Hartman. Synchrotron radiation covers the entire electromagnetic spectrum from the infrared region through the visible, ultraviolet, and into the x-ray region up to energies of many 10's of kilovolts. If the charged particles are of low mass, such as electrons, and if they are traveling relativistically, the emitted radiation is very intense and highly collimated, with opening angles of the order of 1 milliradian. In electron storage rings there are three possible sources of synchrotron radiation; dipole (bending) magnets; wigglers, which act like a sequence of bending magnets with alternating polarities; and undulators, which are also multi-period alternating magnet systems but in which the beam deflections are small resulting in coherent interference of the emitted light.

  16. Radiation Protection | The Ames Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiation Protection Radiation Protection Regulations: The Federal Regulation governing the use of radioactive materials at Ames Laboratory is 10 CFR 835. To implement this...

  17. Florida Radiation Protection Act (Florida)

    Broader source: Energy.gov [DOE]

    The Department of Public Health is responsible for administering a statewide radiation protection program. The program is designed to permit development and utilization of sources of radiation for...

  18. II. HISTORICAL BACKGROUND Since 1977 the University of Oregon Solar

    E-Print Network [OSTI]

    Oregon, University of

    2 II. HISTORICAL BACKGROUND Since 1977 the University of Oregon Solar Monitoring Laboratory has operated a solar radiation monitoring network in the Pacific Northwest. The number of stations participat of utilities headed by the Eugene Water and Electric Board initiated the Re- gional Solar Radiation Monitoring

  19. Composition for radiation shielding

    DOE Patents [OSTI]

    Kronberg, James W. (Aiken, SC)

    1994-01-01T23:59:59.000Z

    A composition for use as a radiation shield. The shield has a depleted urum core for absorbing gamma rays and a bismuth coating for preventing chemical corrosion and absorbing gamma rays. Alternatively, a sheet of gadolinium may be positioned between the uranium core and the bismuth coating for absorbing neutrons. The composition is preferably in the form of a container for storing materials that emit radiation such as gamma rays and neutrons. The container is preferably formed by casting bismuth around a pre-formed uranium container having a gadolinium sheeting, and allowing the bismuth to cool. The resulting container is a structurally sound, corrosion-resistant, radiation-absorbing container.

  20. Miniaturized radiation chirper

    DOE Patents [OSTI]

    Umbarger, C. John (Los Alamos, NM); Wolf, Michael A. (Los Alamos, NM)

    1980-01-01T23:59:59.000Z

    The disclosure relates to a miniaturized radiation chirper for use with a small battery supplying on the order of 5 volts. A poor quality CdTe crystal which is not necessarily suitable for high resolution gamma ray spectroscopy is incorporated with appropriate electronics so that the chirper emits an audible noise at a rate that is proportional to radiation exposure level. The chirper is intended to serve as a personnel radiation warning device that utilizes new and novel electronics with a novel detector, a CdTe crystal. The resultant device is much smaller and has much longer battery life than existing chirpers.

  1. The Intense Radiation Gas

    E-Print Network [OSTI]

    M. Marklund; P. K. Shukla; B. Eliasson

    2005-03-08T23:59:59.000Z

    We present a new dispersion relation for photons that are nonlinearly interacting with a radiation gas of arbitrary intensity due to photon-photon scattering. It is found that the photon phase velocity decreases with increasing radiation intensity, it and attains a minimum value in the limit of super-intense fields. By using Hamilton's ray equations, a self-consistent kinetic theory for interacting photons is formulated. The interaction between an electromagnetic pulse and the radiation gas is shown to produce pulse self-compression and nonlinear saturation. Implications of our new results are discussed.

  2. CONSORTIUM MEMBERS EU Universities

    E-Print Network [OSTI]

    Heermann, Dieter W.

    coordinator > University of Tirana, Albania > University of Sarajevo, Bosnia & Herzegovina > South East Foundation, Belgium > University of Tuzla, Bosnia & Herzegovina > Roma Virtual Network, Israel > University

  3. University of Michigan, Ann Arbor Indiana University, Bloomington

    E-Print Network [OSTI]

    Wu, Yih-Min

    / 1 #12; 2005 4 University of Michigan, Ann Arbor Indiana University, Bloomington University of Illinois, Urbana-Champagne University of Michigan, Ann Arbor 19 Center University of Michigan, Georgetown University, University of Nebraska, University of Kansas University

  4. Radiation physics, biophysics, and radiation biology. Progress report, December 1, 1991--November 30, 1992

    SciTech Connect (OSTI)

    Hall, E.J.

    1992-05-01T23:59:59.000Z

    The following research programs from the Center for Radiological Research of Columbia University are described: Design and development of a new wall-less ultra miniature proportional counter for nanodosimetry; some recent measurements of ionization distributions for heavy ions at nanometer site sizes with a wall-less proportional counter; a calculation of exciton energies in periodic systems with helical symmetry: application to a hydrogen fluoride chain; electron energy-loss function in polynucleotide and the question of plasmon excitation; a non-parametric, microdosimetric-based approach to the evaluation of the biological effects of low doses of ionizing radiation; high-LET radiation risk assessment at medium doses; high-LET radiobiological effects: increased lesion severity or increased lesion proximity; photoneutrons generated by high energy medical linacs; the biological effectiveness of neutrons; implications for radiation protection; molecular characterization of oncogenes induced by neutrons; and the inverse dose-rate effect for oncogenic transformation by charged particles is LET dependent.

  5. Radiation Dosimetry and Biodistribution in Monkey and Man of 11C-PBR28: A PET

    E-Print Network [OSTI]

    Shen, Jun

    Radiation Dosimetry and Biodistribution in Monkey and Man of 11C-PBR28: A PET Radioligand to Image, Vanderbilt University Medical Center Nashville, Nashville, Tennessee; and 3Department of Nuclear Medicine

  6. E-Print Network 3.0 - atmospheric radiative transfer Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Earth and Atmospheric Sciences, Cornell University Collection: Geosciences 49 The Greenhouse Effect without Feedbacks Summary: Number microns10.016.7 7.14 T261K 12;Radiative...

  7. RESEARCH SAFETY RADIATION SAFETY

    E-Print Network [OSTI]

    RESEARCH SAFETY RADIATION SAFETY ENVIRONMENTAL PROGRAMS HAZARDOUS MATERIALS CONTROLLED SUBSTANCES INTEGRATED WASTE MANAGEMENT LABORATORY SAFETY AUDITS & COMPLIANCE BIOSAFETY and ENVIRONMENTAL HEALTH EMERGENCY MANAGEMENT and MISSION CONTINUITY FIRE PREVENTION and LIFE SAFETY GENERAL SAFETY TRAINING

  8. Amorphous silicon radiation detectors

    DOE Patents [OSTI]

    Street, Robert A. (Palo Alto, CA); Perez-Mendez, Victor (Berkeley, CA); Kaplan, Selig N. (El Cerrito, CA)

    1992-01-01T23:59:59.000Z

    Hydrogenated amorphous silicon radiation detector devices having enhanced signal are disclosed. Specifically provided are transversely oriented electrode layers and layered detector configurations of amorphous silicon, the structure of which allow high electric fields upon application of a bias thereby beneficially resulting in a reduction in noise from contact injection and an increase in signal including avalanche multiplication and gain of the signal produced by incoming high energy radiation. These enhanced radiation sensitive devices can be used as measuring and detection means for visible light, low energy photons and high energy ionizing particles such as electrons, x-rays, alpha particles, beta particles and gamma radiation. Particular utility of the device is disclosed for precision powder crystallography and biological identification.

  9. Amorphous silicon radiation detectors

    DOE Patents [OSTI]

    Street, R.A.; Perez-Mendez, V.; Kaplan, S.N.

    1992-11-17T23:59:59.000Z

    Hydrogenated amorphous silicon radiation detector devices having enhanced signal are disclosed. Specifically provided are transversely oriented electrode layers and layered detector configurations of amorphous silicon, the structure of which allow high electric fields upon application of a bias thereby beneficially resulting in a reduction in noise from contact injection and an increase in signal including avalanche multiplication and gain of the signal produced by incoming high energy radiation. These enhanced radiation sensitive devices can be used as measuring and detection means for visible light, low energy photons and high energy ionizing particles such as electrons, x-rays, alpha particles, beta particles and gamma radiation. Particular utility of the device is disclosed for precision powder crystallography and biological identification. 13 figs.

  10. Ionizing radiation detector

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1990-01-01T23:59:59.000Z

    An ionizing radiation detector is provided which is based on the principle of analog electronic integration of radiation sensor currents in the sub-pico to nano ampere range between fixed voltage switching thresholds with automatic voltage reversal each time the appropriate threshold is reached. The thresholds are provided by a first NAND gate Schmitt trigger which is coupled with a second NAND gate Schmitt trigger operating in an alternate switching state from the first gate to turn either a visible or audible indicating device on and off in response to the gate switching rate which is indicative of the level of radiation being sensed. The detector can be configured as a small, personal radiation dosimeter which is simple to operate and responsive over a dynamic range of at least 0.01 to 1000 R/hr.

  11. Adaptive multigroup radiation diffusion

    E-Print Network [OSTI]

    Williams, Richard B., Sc. D. Massachusetts Institute of Technology

    2005-01-01T23:59:59.000Z

    This thesis describes the development and implementation of an algorithm for dramatically increasing the accuracy and reliability of multigroup radiation diffusion simulations at low group counts. This is achieved by ...

  12. Dosimetric effects of weight loss or gain during volumetric modulated arc therapy and intensity-modulated radiation therapy for prostate cancer

    SciTech Connect (OSTI)

    Pair, Matthew L. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX (United States); Du, Weiliang [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX (United States); Rojas, Hector D.; Kanke, James E.; McGuire, Sean E.; Lee, Andrew K.; Kuban, Deborah A. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX (United States); Kudchadker, Rajat J., E-mail: rkudchad@mdanderson.org [Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, TX (United States)

    2013-10-01T23:59:59.000Z

    Weight loss or gain during the course of radiation therapy for prostate cancer can alter the planned dose to the target volumes and critical organs. Typically, source-to-surface distance (SSD) measurements are documented by therapists on a weekly basis to ensure that patients' exterior surface and isocenter-to-skin surface distances remain stable. The radiation oncology team then determines whether the patient has undergone a physical change sufficient to require a new treatment plan. The effect of weight change (SSD increase or decrease) on intensity-modulated radiation therapy (IMRT) or volumetric modulated arc therapy (VMAT) dosimetry is not well known, and it is unclear when rescanning or replanning is needed. The purpose of this study was to determine the effects of weight change (SSD increase or decrease) on IMRT or VMAT dose delivery in patients with prostate cancer and to determine the SSD change threshold for replanning. Whether IMRT or VMAT provides better dose stability under weight change conditions was also determined. We generated clinical IMRT and VMAT prostate and seminal vesicle treatment plans for varying SSDs for 10 randomly selected patients with prostate cancer. The differences due to SSD change were quantified by a specific dose change for a specified volume of interest. The target mean dose, decreased or increased by 2.9% per 1-cm SSD decrease or increase in IMRT and by 3.6% in VMAT. If the SSD deviation is more than 1 cm, the radiation oncology team should determine whether to continue treatment without modifications, to adjust monitor units, or to resimulate and replan.

  13. Method of enhancing radiation response of radiation detection materials

    DOE Patents [OSTI]

    Miller, Steven D. (Richland, WA)

    1997-01-01T23:59:59.000Z

    The present invention is a method of increasing radiation response of a radiation detection material for a given radiation signal by first pressurizing the radiation detection material. Pressurization may be accomplished by any means including mechanical and/or hydraulic. In this application, the term "pressure" includes fluid pressure and/or mechanical stress.

  14. Packet personal radiation monitor

    DOE Patents [OSTI]

    Phelps, James E. (Knoxville, TN)

    1989-01-01T23:59:59.000Z

    A personal radiation monitor of the chirper type is provided for detecting ionizing radiation. A battery powered high voltage power supply is used to generate and apply a high voltage bias to a G-M tube radiation sensor. The high voltage is monitored by a low-loss sensing network which generates a feedback signal to control the high voltage power supply such that the high voltage bias is recharged to +500 VDC when the current pulses of the sensor, generated by the detection of ionizing radiation events, discharges the high voltage bias to +450 VDC. During the high voltage recharge period an audio transducer is activated to produce an audible "chirp". The rate of the "chirps" is controlled by the rate at which the high voltage bias is recharged, which is proportional to the radiation field intensity to which the sensor is exposed. The chirp rate sensitivity is set to be approximately 1.5 (chirps/min/MR/hr.). The G-M tube sensor is used in a current sensing mode so that the device does not paralyze in a high radiation field.

  15. Radiation analysis devices, radiation analysis methods, and articles of manufacture

    DOE Patents [OSTI]

    Roybal, Lyle Gene

    2010-06-08T23:59:59.000Z

    Radiation analysis devices include circuitry configured to determine respective radiation count data for a plurality of sections of an area of interest and combine the radiation count data of individual of sections to determine whether a selected radioactive material is present in the area of interest. An amount of the radiation count data for an individual section is insufficient to determine whether the selected radioactive material is present in the individual section. An article of manufacture includes media comprising programming configured to cause processing circuitry to perform processing comprising determining one or more correction factors based on a calibration of a radiation analysis device, measuring radiation received by the radiation analysis device using the one or more correction factors, and presenting information relating to an amount of radiation measured by the radiation analysis device having one of a plurality of specified radiation energy levels of a range of interest.

  16. Energy Balance Partitioning and Net Radiation Controls on Soil Moisture Ė Precipitation Feedbacks

    E-Print Network [OSTI]

    Jones, Aubrey R.; Brunsell, Nathaniel A.

    2009-01-14T23:59:59.000Z

    Energy Balance Partitioning and Net Radiation Controls on Soil MoistureĖ Precipitation Feedbacks Aubrey R. Jones and Nathaniel A. Brunsell* Department of Geography, University of Kansas, Lawrence, Kansas Received 19 May 2008; accepted 14 January... 2009 ABSTRACT: A series of model runs using the University of Oklahomaís Advanced Regional Prediction System (ARPS) were conducted to investigate the relative impacts of energy balance partitioning and net radiation on soil moisture...

  17. Hypofractionated Whole-Breast Radiation Therapy: Does Breast Size Matter?

    SciTech Connect (OSTI)

    Hannan, Raquibul, E-mail: Raquibul.Hannan@gmail.com [Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas (United States)] [Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas (United States); Thompson, Reid F.; Chen Yu; Bernstein, Karen; Kabarriti, Rafi; Skinner, William [Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York (United States)] [Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York (United States); Chen, Chin C. [Department of Radiation Oncology, Columbia University Medical Center, New York, New York (United States)] [Department of Radiation Oncology, Columbia University Medical Center, New York, New York (United States); Landau, Evan; Miller, Ekeni; Spierer, Marnee; Hong, Linda; Kalnicki, Shalom [Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York (United States)] [Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York (United States)

    2012-11-15T23:59:59.000Z

    Purpose: To evaluate the effects of breast size on dose-volume histogram parameters and clinical toxicity in whole-breast hypofractionated radiation therapy using intensity modulated radiation therapy (IMRT). Materials and Methods: In this retrospective study, all patients undergoing breast-conserving therapy between 2005 and 2009 were screened, and qualifying consecutive patients were included in 1 of 2 cohorts: large-breasted patients (chest wall separation >25 cm or planning target volume [PTV] >1500 cm{sub 3}) (n=97) and small-breasted patients (chest wall separation <25 cm and PTV <1500 cm{sub 3}) (n=32). All patients were treated prone or supine with hypofractionated IMRT to the whole breast (42.4 Gy in 16 fractions) followed by a boost dose (9.6 Gy in 4 fractions). Dosimetric and clinical toxicity data were collected and analyzed using the R statistical package (version 2.12). Results: The mean PTV V95 (percentage of volume receiving >= 95% of prescribed dose) was 90.18% and the mean V105 percentage of volume receiving >= 105% of prescribed dose was 3.55% with no dose greater than 107%. PTV dose was independent of breast size, whereas heart dose and maximum point dose to skin correlated with increasing breast size. Lung dose was markedly decreased in prone compared with supine treatments. Radiation Therapy Oncology Group grade 0, 1, and 2 skin toxicities were noted acutely in 6%, 69%, and 25% of patients, respectively, and at later follow-up (>3 months) in 43%, 57%, and 0% of patients, respectively. Large breast size contributed to increased acute grade 2 toxicity (28% vs 12%, P=.008). Conclusions: Adequate PTV coverage with acceptable hot spots and excellent sparing of organs at risk was achieved by use of IMRT regardless of treatment position and breast size. Although increasing breast size leads to increased heart dose and maximum skin dose, heart dose remained within our institutional constraints and the incidence of overall skin toxicity was comparable to that reported in the literature. Taken together, these data suggest that hypofractionated radiation therapy using IMRT is a viable and appropriate therapeutic modality in large-breasted patients.

  18. Surface Radiation from GOES: A Physical Approach; Preprint

    SciTech Connect (OSTI)

    Habte, A.; Sengupta, M.; Wilcox, S.

    2012-09-01T23:59:59.000Z

    Models to compute Global Horizontal Irradiance (GHI) and Direct Normal Irradiance (DNI) have been in development over the last 3 decades. These models can be classified as empirical or physical, based on the approach. Empirical models relate ground based observations with satellite measurements and use these relations to compute surface radiation. Physical models consider the radiation received from the earth at the satellite and create retrievals to estimate surface radiation. While empirical methods have been traditionally used for computing surface radiation for the solar energy industry the advent of faster computing has made operational physical models viable. The Global Solar Insolation Project (GSIP) is an operational physical model from NOAA that computes GHI using the visible and infrared channel measurements from the GOES satellites. GSIP uses a two-stage scheme that first retrieves cloud properties and uses those properties in a radiative transfer model to calculate surface radiation. NREL, University of Wisconsin and NOAA have recently collaborated to adapt GSIP to create a 4 km GHI and DNI product every 30 minutes. This paper presents an outline of the methodology and a comprehensive validation using high quality ground based solar data from the National Oceanic and Atmospheric Administration (NOAA) Surface Radiation (SURFRAD) (http://www.srrb.noaa.gov/surfrad/sitepage.html) and Integrated Surface Insolation Study (ISIS) http://www.srrb.noaa.gov/isis/isissites.html), the Solar Radiation Research Laboratory (SRRL) at National Renewable Energy Laboratory (NREL), and Sun Spot One (SS1) stations.

  19. Estimating optical properties in layered tissues by use of the Born approximation of the radiative

    E-Print Network [OSTI]

    Kim, Arnold D.

    of the radiative transport equation to recover simultaneously the absorption and scattering coefficients approximation of the radiative transport equation (RTE).1­3 These methods are lim- ited to systems whose reduced transport equation Arnold D. Kim School of Natural Science, University of California, Merced, P. O. Box 2039

  20. Will Geoengineering With Solar Radiation Management Ever Be Used?1 Alan Robock4

    E-Print Network [OSTI]

    Robock, Alan

    Will Geoengineering With Solar Radiation Management Ever Be Used?1 2 3 Alan Robock4 5 Department University39 14 College Farm Road40 New Brunswick, NJ 0890141 Phone: 732-881-161042 Fax: 732-932-864443 E will use the term to refer to solar radiation management, ideas about reducing52 incoming sunlight to cool

  1. REPORT NO. 8 radiation hazards

    E-Print Network [OSTI]

    REPORT NO. 8 REVISED guidance for the control of radiation hazards in uranium mining SEPTEMBER 1967 OF RADIATION HAZARDS IN URANIUM MINING SEPTEMBER 1967 Staff Report of the FEDERAL RADIATION COUNCIL #12;FEDERAL...... .... .._ _.... Section I. Introduction. . . Section II. The Radiation Environment AssociatedWith Uranium Mining. Section

  2. Appendix G: Radiation HYDROGEN ATOM

    E-Print Network [OSTI]

    Pennycook, Steve

    . People are exposed to naturally occurring radiation constantly. For example, cosmic radiation; radon effects on the environment and biological systems. Radiation comes from natural and human-made sourcesAppendix G: Radiation #12;#12;P P P E E E N NN HYDROGEN ATOM DEUTERIUM ATOM TRITIUM ATOM HYDROGEN

  3. Appendix A: Radiation HYDROGEN ATOM

    E-Print Network [OSTI]

    Pennycook, Steve

    . People are exposed to naturally occurring radiation constantly. For example, cosmic radiation; radon effects on the environment and biological systems. Radiation comes from natural and human-made sourcesAppendix A: Radiation #12;P P P E E E N NN HYDROGEN ATOM DEUTERIUM ATOM TRITIUM ATOM HYDROGEN

  4. University of Colorado University of Colorado Boulder

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    University of Colorado Boulder University of Colorado Boulder University of Colorado Boulder University of Colorado Boulder University of Colorado Boulder Catalog 2012­13 Redefining Teaching & Learning­13 UNIVERSITY OF COLORADO BOULDER CATALOG contains a summary of campus offerings, policies, and requirements

  5. University Archives University of Missouri at Columbia

    E-Print Network [OSTI]

    Taylor, Jerry

    University Archives University of Missouri at Columbia 703 Lewis Hall University of Missouri-Columbia Archives of the University of Missouri at Columbia reserves the right to refuse permission to individuals agree to credit the University Archives of the University of Missouri at Columbia in accordance

  6. Radiation Protection Dosimetry Vol. 100, Nos 14, pp. 207209 (2002)

    E-Print Network [OSTI]

    Chen, Reuven

    207 Radiation Protection Dosimetry Vol. 100, Nos 1­4, pp. 207­209 (2002) Nuclear Technology§ School of Physics & Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel Nuclear Technology Division of these crystals to solid state dosimetry was also investigated. EXPERIMENTAL TECHNIQUE A series of CsGd2F7 single

  7. ORIGINAL ARTICLE Biodistribution and radiation dosimetry of a positron

    E-Print Network [OSTI]

    Shen, Jun

    ORIGINAL ARTICLE Biodistribution and radiation dosimetry of a positron emission tomographic ligand other 18 F radioligands and undergoes little defluorination. Keywords mGluR5 . PET. Dosimetry of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan P

  8. Nanofocusing optics for synchrotron radiation made from polycrystalline diamond

    E-Print Network [OSTI]

    Bristol, University of

    Nanofocusing optics for synchrotron radiation made from polycrystalline diamond O. J. L. Fox,1,2,* L. Alianelli,1 A. M. Malik,3,4 I. Pape,1,5 P. W. May,2 and K. J. S. Sawhney1 1 Diamond Light Source of Engineering, University of Nottingham, NG7 2RD, UK * oliver.fox@diamond.ac.uk Abstract: Diamond possesses many

  9. 2005LANDESBIOSCIENCE.DONOTDISTRIBUTE. [Cancer Biology & Therapy 4:1, 95-102, January 2005]; 2005 Landes Bioscience

    E-Print Network [OSTI]

    Gao, Jinming

    not improved long-term survival after resection. -lapachone is a naturally occurring compound presentRadiation Oncology and the 3Holden Comprehensive Cancer Center; 4University of Iowa College of Medicine; Iowa City, Iowa USA 5Veterans Affairs Medical Center; Iowa City, Iowa USA 6Departments of Radiation

  10. Role of Modified Chaplygin Gas in Accelerated Universe

    E-Print Network [OSTI]

    Ujjal Debnath; Asit Banerjee; Subenoy Chakraborty

    2004-11-02T23:59:59.000Z

    In this paper we have considered a model of modified Chaplygin gas and its role in accelerating phase of the universe. We have assumed that the equation of state of this modified model is valid from the radiation era to $\\Lambda$CDM model. We have used recently developed statefinder parameters in characterizing different phase of the universe diagrammatically.

  11. Radiation delivery system and method

    DOE Patents [OSTI]

    Sorensen, Scott A. (Overland Park, KS); Robison, Thomas W. (Los Alamos, NM); Taylor, Craig M. V. (Jemez Springs, NM)

    2002-01-01T23:59:59.000Z

    A radiation delivery system and method are described. The system includes a treatment configuration such as a stent, balloon catheter, wire, ribbon, or the like, a portion of which is covered with a gold layer. Chemisorbed to the gold layer is a radiation-emitting self-assembled monolayer or a radiation-emitting polymer. The radiation delivery system is compatible with medical catheter-based technologies to provide a therapeutic dose of radiation to a lesion following an angioplasty procedure.

  12. Packet personal radiation monitor

    DOE Patents [OSTI]

    Phelps, J.E.

    1988-03-31T23:59:59.000Z

    A personal radiation monitor of the chirper type is provided for detecting ionizing radiation. A battery powered high voltage power supply is used to generate and apply a high voltage bias to a G-M tube radiation sensor. The high voltage is monitored by a low-loss sensing network which generates a feedback signal to control the high voltage power supply such that the high voltage bias is recharged to +500 VDC when the current pulses of the sensor, generated by the detection of ionizing radiatonevents, discharges the high voltage bias to +450 VDC. During the high voltage recharge period an audio transducer is activated to produce an audible ''chirp''. The rate of the ''chirps'' is controlled by the rate at which the high voltage bias is recharged, which is proportional to the radiation field intensity to which the sensor is exposed. The chirp rate sensitivity is set to be approximately 1.5 (chirps/min/MR/hr.). The G-M tube sensor is used in a current sensing mode so that the device does not paralyze in a high radiation field. 2 figs.

  13. Remote radiation dosimetry

    DOE Patents [OSTI]

    Braunlich, P.F.; Tetzlaff, W.; Hegland, J.E.; Jones, S.C.

    1991-03-12T23:59:59.000Z

    Disclosed are methods and apparatus for remotely measuring radiation levels. Such are particularly useful for measuring relatively high levels or dosages of radiation being administered in radiation therapy. They are also useful for more general radiation level measurements where remote sensing from the remaining portions of the apparatus is desirable. The apparatus uses a beam generator, such as a laser beam, to provide a stimulating beam. The stimulating beam is preferably of wavelengths shorter than 6 microns, or more advantageously less than 2 microns. The stimulating beam is used to stimulate a remote luminescent sensor mounted in a probe which emits stored luminescent energy resulting from exposure of the sensor to ionizing radiation. The stimulating beam is communicated to the remote luminescent sensor via a transmissive fiber which also preferably serves to return the emission from the luminescent sensor. The stimulating beam is advantageously split by a beam splitter to create a detector beam which is measured for power during a reading period during which the luminescent phosphor is read. The detected power is preferably used to control the beam generator to thus produce desired beam power during the reading period. The luminescent emission from the remote sensor is communicated to a suitable emission detector, preferably after filtering or other selective treatment to better isolate the luminescent emission. 8 figures.

  14. Recycling universe

    E-Print Network [OSTI]

    Jaume Garriga; Alexander Vilenkin

    1997-07-26T23:59:59.000Z

    If the effective cosmological constant is non-zero, our observable universe may enter a stage of exponential expansion. In such case, regions of it may tunnel back to the false vacuum of an inflaton scalar field, and inflation with a high expansion rate may resume in those regions. An ``ideal'' eternal observer would then witness an infinite succession of cycles from false vacuum to true, and back. Within each cycle, the entire history of a hot universe would be replayed. If there were several minima of the inflaton potential, our ideal observer would visit each one of these minima with a frequency which depends on the shape of the potential. We generalize the formalism of stochastic inflation to analyze the global structure of the universe when this `recycling' process is taken into account.

  15. Semiconductor radiation detector

    DOE Patents [OSTI]

    Bell, Zane W. (Oak Ridge, TN); Burger, Arnold (Knoxville, TN)

    2010-03-30T23:59:59.000Z

    A semiconductor detector for ionizing electromagnetic radiation, neutrons, and energetic charged particles. The detecting element is comprised of a compound having the composition I-III-VI.sub.2 or II-IV-V.sub.2 where the "I" component is from column 1A or 1B of the periodic table, the "II" component is from column 2B, the "III" component is from column 3A, the "IV" component is from column 4A, the "V" component is from column 5A, and the "VI" component is from column 6A. The detecting element detects ionizing radiation by generating a signal proportional to the energy deposited in the element, and detects neutrons by virtue of the ionizing radiation emitted by one or more of the constituent materials subsequent to capture. The detector may contain more than one neutron-sensitive component.

  16. Composition for radiation shielding

    DOE Patents [OSTI]

    Kronberg, J.W.

    1994-08-02T23:59:59.000Z

    A composition for use as a radiation shield is disclosed. The shield has a depleted uranium core for absorbing gamma rays and a bismuth coating for preventing chemical corrosion and absorbing gamma rays. Alternatively, a sheet of gadolinium may be positioned between the uranium core and the bismuth coating for absorbing neutrons. The composition is preferably in the form of a container for storing materials that emit radiation such as gamma rays and neutrons. The container is preferably formed by casting bismuth around a pre-formed uranium container having a gadolinium sheeting, and allowing the bismuth to cool. The resulting container is a structurally sound, corrosion-resistant, radiation-absorbing container. 2 figs.

  17. Tunable terahertz radiation source

    SciTech Connect (OSTI)

    Boulaevskii, Lev; Feldmann, David M; Jia, Quanxi; Koshelev, Alexei; Moody, Nathan A

    2014-01-21T23:59:59.000Z

    Terahertz radiation source and method of producing terahertz radiation, said source comprising a junction stack, said junction stack comprising a crystalline material comprising a plurality of self-synchronized intrinsic Josephson junctions; an electrically conductive material in contact with two opposing sides of said crystalline material; and a substrate layer disposed upon at least a portion of both the crystalline material and the electrically-conductive material, wherein the crystalline material has a c-axis which is parallel to the substrate layer, and wherein the source emits at least 1 mW of power.

  18. Wireless passive radiation sensor

    DOE Patents [OSTI]

    Pfeifer, Kent B; Rumpf, Arthur N; Yelton, William G; Limmer, Steven J

    2013-12-03T23:59:59.000Z

    A novel measurement technique is employed using surface acoustic wave (SAW) devices, passive RF, and radiation-sensitive films to provide a wireless passive radiation sensor that requires no batteries, outside wiring, or regular maintenance. The sensor is small (<1 cm.sup.2), physically robust, and will operate unattended for decades. In addition, the sensor can be insensitive to measurement position and read distance due to a novel self-referencing technique eliminating the need to measure absolute responses that are dependent on RF transmitter location and power.

  19. Dynamic RadiativeConvective Equilibria Using GCM Column Physics ISAAC M. HELD

    E-Print Network [OSTI]

    Dynamic Radiative­Convective Equilibria Using GCM Column Physics ISAAC M. HELD NOAA and Oceanic Sciences, Department of Geosciences, Princeton University, Princeton, New Jersey BRUCE WYMAN NOAA author address: Dr. Isaac M. Held, NOAA/Geo- physical Fluid Dynamics Laboratory, Princeton University

  20. Ultraviolet Radiation Influences Perch Selection by a Neotropical Poison-Dart Frog

    E-Print Network [OSTI]

    Shaffer, H. Bradley

    Division, Pepperdine University, Malibu, California, United States of America, 2 Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, United States of America to solar radiation. Previous studies have demonstrated that males calling from high perches are more

  1. Unruh radiation and Interference effect

    E-Print Network [OSTI]

    Satoshi Iso; Yasuhiro Yamamoto; Sen Zhang

    2011-02-23T23:59:59.000Z

    A uniformly accelerated charged particle feels the vacuum as thermally excited and fluctuates around the classical trajectory. Then we may expect additional radiation besides the Larmor radiation. It is called Unruh radiation. In this report, we review the calculation of the Unruh radiation with an emphasis on the interference effect between the vacuum fluctuation and the radiation from the fluctuating motion. Our calculation is based on a stochastic treatment of the particle under a uniform acceleration. The basics of the stochastic equation are reviewed in another report in the same proceeding. In this report, we mainly discuss the radiation and the interference effect.

  2. External audit of clinical practice and medical decision making in a new Asian oncology center: Results and implications for both developing and developed nations

    SciTech Connect (OSTI)

    Shakespeare, Thomas P. [North Coast Cancer Institute, Coffs Harbour, Sydney, NSW (Australia) and Cancer Institute (Singapore)]. E-mail: ThomasShakespeare@gmail.com; Back, Michael F. [Cancer Institute (Singapore); Lu, Jiade J. [Cancer Institute (Singapore); Lee, Khai Mun [Cancer Institute (Singapore); Mukherjee, Rahul K. [Cancer Institute (Singapore)

    2006-03-01T23:59:59.000Z

    Purpose: The external audit of oncologist clinical practice is increasingly important because of the incorporation of audits into national maintenance of certification (MOC) programs. However, there are few reports of external audits of oncology practice or decision making. Our institution (The Cancer Institute, Singapore) was asked to externally audit an oncology department in a developing Asian nation, providing a unique opportunity to explore the feasibility of such a process. Methods and Materials: We audited 100 randomly selected patients simulated for radiotherapy in 2003, using a previously reported audit instrument assessing clinical documentation/quality assurance and medical decision making. Results: Clinical documentation/quality assurance, decision making, and overall performance criteria were adequate 74.4%, 88.3%, and 80.2% of the time, respectively. Overall 52.0% of cases received suboptimal management. Multivariate analysis revealed palliative intent was associated with improved documentation/clinical quality assurance (p = 0.07), decision making (p 0.007), overall performance (p = 0.003), and optimal treatment rates (p 0.07); non-small-cell lung cancer or central nervous system primary sites were associated with better decision making (p = 0.001), overall performance (p = 0.03), and optimal treatment rates (p = 0.002). Conclusions: Despite the poor results, the external audit had several benefits. It identified learning needs for future targeting, and the auditor provided facilitating feedback to address systematic errors identified. Our experience was also helpful in refining our national revalidation audit instrument. The feasibility of the external audit supports the consideration of including audit in national MOC programs.

  3. Clinical Outcomes of Intensity-Modulated Pelvic Radiation Therapy for Carcinoma of the Cervix

    SciTech Connect (OSTI)

    Hasselle, Michael D. [Departments of Radiation and Cellular Oncology, University of Chicago, Chicago, IL (United States); Rose, Brent S. [Department of Radiation Oncology, Center for Advanced Radiotherapy Technologies, University of California, San Diego, La Jolla, CA (United States); Kochanski, Joel D. [Departments of Radiation and Cellular Oncology, University of Chicago, Chicago, IL (United States); Nath, Sameer K. [Department of Radiation Oncology, Center for Advanced Radiotherapy Technologies, University of California, San Diego, La Jolla, CA (United States); Bafana, Rounak [Wayne State University School of Medicine, Detroit, MI (United States); Yashar, Catheryn M. [Department of Radiation Oncology, Center for Advanced Radiotherapy Technologies, University of California, San Diego, La Jolla, CA (United States); Hasan, Yasmin [Departments of Radiation and Cellular Oncology, University of Chicago, Chicago, IL (United States); Roeske, John C. [Department of Radiation Oncology, Loyola University, Maywood, IL (United States); Mundt, Arno J. [Department of Radiation Oncology, Center for Advanced Radiotherapy Technologies, University of California, San Diego, La Jolla, CA (United States); Mell, Loren K., E-mail: lmell@ucsd.edu [Department of Radiation Oncology, Center for Advanced Radiotherapy Technologies, University of California, San Diego, La Jolla, CA (United States)

    2011-08-01T23:59:59.000Z

    Purpose: To evaluate disease outcomes and toxicity in cervical cancer patients treated with pelvic intensity-modulated radiation therapy (IMRT). Methods and Materials: We included all patients with Stage I-IVA cervical carcinoma treated with IMRT at three different institutions from 2000-2007. Patients treated with extended field or conventional techniques were excluded. Intensity-modulated radiation therapy plans were designed to deliver 45 Gy in 1.8-Gy daily fractions to the planning target volume while minimizing dose to the bowel, bladder, and rectum. Toxicity was graded according to the Radiation Therapy Oncology Group system. Overall survival and disease-free survival were estimated by use of the Kaplan-Meier method. Pelvic failure, distant failure, and late toxicity were estimated by use of cumulative incidence functions. Results: The study included 111 patients. Of these, 22 were treated with postoperative IMRT, 8 with IMRT followed by intracavitary brachytherapy and adjuvant hysterectomy, and 81 with IMRT followed by planned intracavitary brachytherapy. Of the patients, 63 had Stage I-IIA disease and 48 had Stage IIB-IVA disease. The median follow-up time was 27 months. The 3-year overall survival rate and the disease-free survival rate were 78% (95% confidence interval [CI], 68-88%) and 69% (95% CI, 59-81%), respectively. The 3-year pelvic failure rate and the distant failure rate were 14% (95% CI, 6-22%) and 17% (95% CI, 8-25%), respectively. Estimates of acute and late Grade 3 toxicity or higher were 2% (95% CI, 0-7%) and 7% (95% CI, 2-13%), respectively. Conclusions: Intensity-modulated radiation therapy is associated with low toxicity and favorable outcomes, supporting its safety and efficacy for cervical cancer. Prospective clinical trials are needed to evaluate the comparative efficacy of IMRT vs. conventional techniques.

  4. SU-E-P-07: Evaluation of Productivity Systems for Radiation Therapy

    SciTech Connect (OSTI)

    Ramsey, C; Usynin, A [Thompson Cancer Survival Center, Knoxville, TN (United States)

    2014-06-01T23:59:59.000Z

    Purpose: Health systems throughout the United States are under increased financial pressure to reduce operating cost. As a result, productivity models developed by third-party consultants are being used to optimize staff to treatment volumes. The purpose of this study was to critically evaluate productivity systems for radiation oncology. Methods: Staffing efficiency was evaluated using multiple productivity models. The first model evaluated staffing levels using equal weighting of procedure codes and hours worked. A second productivity model was developed using hours worked by job class and relative value units for each procedure code. A third model was developed using the measured procedure times extracted from the electronic medical record, which tracks the wait and treatment times for each patient for each treatment fraction. A MatLab program was developed to query and analyze the daily treatment data. A model was then created to determine any theoretical gains in treatment productivity. Results: Productivity was evaluated for six radiation therapy departments operating nine linear accelerators delivering over 40,000 treatment fractions per year. Third party productivity models that do not take into consideration the unique nature of radiation therapy can be counterproductive. For example, other outpatient departments can compress their daily schedule to decrease the worked hours. This approach was tested using the treatment schedule evaluation tool developed as part of this study. It was determined that the maximum possible savings for treatment schedule compression was $32,000 per year per linac. All annual cost savings would be lost if only two patients per year choose to be treated elsewhere because of limited or restricted appointment times. Conclusion: The use of productivity models in radiation therapy can easily result in a loss of treatment revenue that is greater than any potential cost savings in reduced hours worked by staff.

  5. NREL Solar Radiation Resource Assessment Project: Status and outlook

    SciTech Connect (OSTI)

    Renne, D.; Riordan, C.; Maxwell, E.; Stoffel, T.; Marion, B.; Rymes, M.; Wilcox, S.; Myers, D.

    1992-05-01T23:59:59.000Z

    This report summarizes the activities and accomplishments of NREL's Solar Radiation Resource Assessment Project during fiscal year 1991. Currently, the primary focus of the SRRAP is to produce a 1961--1990 National Solar Radiation Data Base, providing hourly values of global horizontal, diffuse, and direct normal solar radiation at approximately 250 sites around the United States. Because these solar radiation quantities have been measured intermittently at only about 50 of these sites, models were developed and applied to the majority of the stations to provide estimates of these parameters. Although approximately 93% of the data base consists of modeled data this represents a significant improvement over the SOLMET/ERSATZ 1952--1975 data base. The magnitude and importance of this activity are such that the majority of SRRAP human and financial in many other activities, which are reported here. These include the continued maintenance of a solar radiation monitoring network in the southeast United States at six Historically Black Colleges and Universities (HBCU's), the transfer of solar radiation resource assessment technology through a variety of activities, participation in international programs, and the maintenance and operation of NREL's Solar Radiation Research Laboratory. 17 refs.

  6. University of Maryland University Health Center

    E-Print Network [OSTI]

    Milchberg, Howard

    special care is taken, should the extracts be lost or damaged, the University Health Center cannot assumeUniversity of Maryland University Health Center ALLERGY INJECTION POLICY The University Health to effectively use our service, we require your cooperation. INSTRUCTIONS Because the University Health Center

  7. UNIVERSITY SPACE POLICY ALLOCATION OF UNIVERSITY SPACE

    E-Print Network [OSTI]

    UNIVERSITY COLLEGE DUBLIN UNIVERSITY SPACE POLICY #12;ALLOCATION OF UNIVERSITY SPACE I Purpose To provide a methodology for the allocation of space across the University II Background Due to the university's success in attracting research funding, the need for space and facilities has grown

  8. University Archives University of Missouri at Columbia

    E-Print Network [OSTI]

    Taylor, Jerry

    University Archives University of Missouri at Columbia 703 Lewis Hall Columbia, Missouri 65211 of Missouri at Columbia, may be loaned out to University personnel. All items on loan will be listed below on loan from the University Archives, University of Missouri at Columbia. He/She further acknowledges full

  9. Psoriasis and ultraviolet radiation

    SciTech Connect (OSTI)

    Farber, E.M.; Nall, L. (Psoriasis Research Institute, Palo Alto, CA (United States))

    1993-09-01T23:59:59.000Z

    Prevention and detection screening programs as a public health service in curtailing the ever-increasing incidence of all forms of skin cancer are reviewed. The effect of solar and artificial ultraviolet radiation on the general population and persons with psoriasis is examined. 54 refs.

  10. Thermostatic Radiator Valve Evaluation

    SciTech Connect (OSTI)

    Dentz, Jordan [Advanced Residential Integrated Energy Solutions Collaborative, New York, NY (United States); Ansanelli, Eric [Advanced Residential Integrated Energy Solutions Collaborative, New York, NY (United States)

    2015-01-01T23:59:59.000Z

    A large stock of multifamily buildings in the Northeast and Midwest are heated by steam distribution systems. Losses from these systems are typically high and a significant number of apartments are overheated much of the time. Thermostatically controlled radiator valves (TRVs) are one potential strategy to combat this problem, but have not been widely accepted by the residential retrofit market.

  11. Radiation Source Replacement Workshop

    SciTech Connect (OSTI)

    Griffin, Jeffrey W.; Moran, Traci L.; Bond, Leonard J.

    2010-12-01T23:59:59.000Z

    This report summarizes a Radiation Source Replacement Workshop in Houston Texas on October 27-28, 2010, which provided a forum for industry and researchers to exchange information and to discuss the issues relating to replacement of AmBe, and potentially other isotope sources used in well logging.

  12. Photovoltaic radiation detector element

    DOE Patents [OSTI]

    Agouridis, D.C.

    1980-12-17T23:59:59.000Z

    A radiation detector element is formed of a body of semiconductor material, a coating on the body which forms a photovoltaic junction therewith, and a current collector consisting of narrow metallic strips, the aforesaid coating having an opening therein in the edge of which closely approaches but is spaced from the current collector strips.

  13. Local microwave background radiation

    E-Print Network [OSTI]

    Domingos Soares

    2014-11-13T23:59:59.000Z

    An inquiry on a possible local origin for the Microwave Background Radiation is made. Thermal MBR photons are contained in a system called {\\it magnetic bottle} which is due to Earth magnetic field and solar wind particles, mostly electrons. Observational tests are anticipated.

  14. Radiation detector spectrum simulator

    DOE Patents [OSTI]

    Wolf, Michael A. (Los Alamos, NM); Crowell, John M. (Los Alamos, NM)

    1987-01-01T23:59:59.000Z

    A small battery operated nuclear spectrum simulator having a noise source nerates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith generates several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

  15. Radiation Dose Estimates from

    E-Print Network [OSTI]

    Summary: Radiation Dose Estimates from Hanford Radioactive Material Releases to the Air and the Columbia River April 21,1994 TheTechnid Steering Panel of the Hanford - Environmental Dose Reconstruction than 40years, the U.S. Government made plutonium for nuclear weapons at the Hanford

  16. Radiation detector spectrum simulator

    DOE Patents [OSTI]

    Wolf, M.A.; Crowell, J.M.

    1985-04-09T23:59:59.000Z

    A small battery operated nuclear spectrum simulator having a noise source generates pulses with a Gaussian distribution of amplitudes. A switched dc bias circuit cooperating therewith to generate several nominal amplitudes of such pulses and a spectral distribution of pulses that closely simulates the spectrum produced by a radiation source such as Americium 241.

  17. Assessing exposure to radiation

    SciTech Connect (OSTI)

    Walter, K.

    1997-01-01T23:59:59.000Z

    Since the founding of Lawrence Livermore National Laboratory, we have been world leaders in evaluating the risks associated with radiation. Ultrasensitive tools allow us not only to measure radionuclides present in the body but also to reconstruct the radiation dose from past nuclear events and to project the levels of radiation that will still be present in the body for 50 years after the initial intake. A variety of laboratory procedures, including some developed here, give us detailed information on the effects of radiation at the cellular level. Even today, we are re-evaluating the neutron dose resulting from the bombing at Hiroshima. Our dose reconstruction and projection capabilities have also been applied to studies of Nagasaki, Chernobyl, the Mayak industrial complex in the former Soviet Union, the Nevada Test Site, Bikini Atoll, and other sites. We are evaluating the information being collected on individuals currently working with radioactive material at Livermore and elsewhere as well as previously collected data on workers that extends back to the Manhattan Project.

  18. RADIATION ALERT User Manual

    E-Print Network [OSTI]

    Haller, Gary L.

    Environmental Area Monitoring 16 Checking for Surface Contamination 16 5 Maintenance 17 Calibration 17 ∑ Monitoring possible radiation exposure while working with radionuclides ∑ Screening for environmental. Water can damage the circuitry and the mica surface of the Geiger tube. ∑ Do not put the Inspector

  19. PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [Columbia University HHMI

    E-Print Network [OSTI]

    PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [Columbia University HHMI] On: 19, Rehovot, Israel c Dept. of Radiation Medicine, Loma Linda University Medical Center, Loma Linda, USA d Dept. of Radiology, University of California at San Diego, La Jolla, USA e Physikalisch Technische

  20. ACS WFC CCD Radiation Test: The Radiation Environment

    E-Print Network [OSTI]

    Sirianni, Marco

    of external surfaces by naturally occurring atomic oxygen. CCD detectors are particularly vulnerable to damage damage. A comprehensive discussion of the types of radiation damage known to occur in CCDs is beyond1 ACS WFC CCD Radiation Test: The Radiation Environment Michael R. Jones Space Telescope Science

  1. Betatron radiation from density tailored plasmas

    E-Print Network [OSTI]

    Ta Phuoc, Kim

    2010-01-01T23:59:59.000Z

    Betatron radiation from density tailored plasmas K. Tathe resulting betatron radiation spectrum can therefore bepro?le, the betatron radiation emitted by theses electrons

  2. Nanoscale Engineering Of Radiation Tolerant Silicon Carbide....

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Engineering Of Radiation Tolerant Silicon Carbide. Nanoscale Engineering Of Radiation Tolerant Silicon Carbide. Abstract: Radiation tolerance is determined by how effectively the...

  3. Health Physicist (Radiation Protection Specialist)

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will serve as the Health Physicist (Radiation Protection Specialist) senior subject matter expert for health physics/radiation safety at the sites. You will...

  4. Acceleration and Classical Electromagnetic Radiation

    E-Print Network [OSTI]

    E. N. Glass

    2008-01-09T23:59:59.000Z

    Classical radiation from an accelerated charge is reviewed along with the reciprocal topic of accelerated observers detecting radiation from a static charge. This review commemerates Bahram Mashhoon's 60th birthday.

  5. DOE Radiation Records Contacts List

    Broader source: Energy.gov [DOE]

    DOE radiation records contact list for individuals to obtain records of occupational exposure directly from a DOE site.

  6. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, L.H.

    1995-10-17T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

  7. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, L.H.

    1994-08-16T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

  8. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1995-01-01T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

  9. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1994-01-01T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

  10. Open University

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Michel Pentz est nťe en Afrique du Sud et venu au Cern en 1957 comme physicien et prťsident de l'associaion du personnel. Il est ťgalement fondateur du mouvement Antiapartheid de GenŤve et a participť ŗ la fondation de l'Open University en Grande-Bretagne. Il nous parle des contextes pťdagogiques, culturels et nationaux dans lesquels la mťthode peut s'appliquer.

  11. The Big Bang, COBE, and the Relic Radiation of Creation (LBNL Science at the Theater)

    ScienceCinema (OSTI)

    Smoot, George

    2011-04-28T23:59:59.000Z

    Berkeley Lab's George Smoot won the 2006 Physics Nobel Prize, together with John Mather of NASA Goddard Space Flight Center, for "the discovery of the blackbody form and anisotropy of the cosmic microwave background radiation." The anisotropy showed as small variations in the map of the early universe. This research looks back into the infant universe and provides a better understanding of the origin of galaxies and stars. The cosmic background radiation is a tool to understand the structure and history of the universe and the structure of space-time. These observations have provided increased support for the big bang theory of the universe's origin. The Cosmic Background Explorer (COBE) NASA satellite, launched in 1989, carries instruments that measured various aspects of cosmic microwave background radiation, and produced the data for these compelling scientific results, which opened up a field that continues very actively today.

  12. Multiscale Modeling of Radiation ResponseMultiscale Modeling of Radiation ResponseMultiscale Modeling of Radiation ResponseMultiscale Modeling of Radiation Response Effects of Radiation Quality and HypoxiaEffects of Radiation Quality and Hypoxia

    E-Print Network [OSTI]

    Stewart, Robert D.

    Multiscale Modeling of Radiation ResponseMultiscale Modeling of Radiation ResponseMultiscale Modeling of Radiation ResponseMultiscale Modeling of Radiation Response Effects of Radiation Quality and HypoxiaEffects of Radiation Quality and Hypoxia Robert D. Stewart, Ph.D.Robert D. Stewart, Ph

  13. UNIVERSITY OF CALIFORNIA, SAN FRANCISCO RADIATION SAFETY TRAINING MANUAL

    E-Print Network [OSTI]

    Lim, Wendell

    Radioisotope Usage Form 57 B Radioisotope Inventory 57 C Wipe Survey Records 58 CHAPTER 9 RADIOACTIVE WASTE DISPOSAL 60 A Categories of Radioactive Waste 60 B Radioactive Decay 67 C Storage Considerations for Radioactive Waste 67 D Classification 68 E Documentation 68 F Scheduling of Radioactive Waste Pick-Ups 71 G

  14. University of California Radiation Laboratory Progress Report for November, 1947

    E-Print Network [OSTI]

    Perlman, I.

    2010-01-01T23:59:59.000Z

    preparE Since anhydrous uranyl nitrate for use in the studyevacuation of the hydrated uranyl nitrate salts resulted in

  15. University of California Radiation Laboratory Progress Report for November, 1947

    E-Print Network [OSTI]

    Perlman, I.

    2010-01-01T23:59:59.000Z

    plu- tonium and americium have a fluorite structure and theirregularity showed up with americium. This irregu- laritybeen prepared with pure americium and its lattice constant

  16. CENTER FOR ENVIRONMENTAL RADIATION STUDIES Texas Tech University

    E-Print Network [OSTI]

    Rock, Chris

    for advising the government of Iraq on characterizing and decommissioning former nuclear facilities homeland security and international nuclear safety. STRENGTHS: Scientists associated with CERS have been leaders in research at the Chernobyl Nuclear Power Station in Ukraine since 1992. Recently, CERS

  17. Oak Rigde Associated Universities (ORAU) Radiation Emergency Assistance

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen OwnedofDepartment ofJaredOakscience-based,OHA FOIA CasesORDER,Operations

  18. MASTER UCRL-9537 UNIVERSITY OF CALIFORNIA Lawrence Radiation Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and InterfacesAdministration -Lowell L. Wood, 1981Future4:~^J MASTER Mfy

  19. UCRL-10377 UNIVERSITY OF CALI FORNIA Lawrence Radiation Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof EnergyLeaseEnergy U.S.-Canadat e d N a t--__ -377

  20. UCRL-5257 Rev. UNIVERSITY OF CALIFORNIA Radiation Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof EnergyLeaseEnergy U.S.-Canadat e d N aUCRL-5257

  1. University of Illinois Temperature Sensors

    SciTech Connect (OSTI)

    K. L. Davis; D. L. Knudson; J. L. Rempe; B. M. Chase

    2014-09-01T23:59:59.000Z

    This document summarizes background information and presents results related to temperature measurements in the Advanced Test Reactor (ATR) National Scientific User Facility (NSUF) University of Illinois Project 29609 irradiation. The objective of this test was to assess the radiation performance of ferritic alloys for advanced reactor applications. The FeCr-based alloy system is considered the lead alloy system for a variety of advanced reactor components and applications. Irradiations of FeCr alloy samples were performed using the Hydraulic Shuttle Irradiation System (HSIS) in the B-7 position and in a static capsule in the A-11 position of the ATR.

  2. ReseaRch at the University of Maryland Nuclear Safety Research at the University of Maryland

    E-Print Network [OSTI]

    Hill, Wendell T.

    Research on nuclear energy started at the University of Maryland just after World War II, when and nuclear weapons was followed by controversial accidents and regulation. Today, nuclear power is considered that analyze the risks involved in the use of nuclear energy. Understanding and Using Radiation The ionizing

  3. PHILADELPHIA UNIVERSITY (374)

    E-Print Network [OSTI]

    structure variations induced by UV radiation: FTIR spectroscopy study for Chlorella Kessleri, Submitted

  4. Terahertz radiation mixer

    DOE Patents [OSTI]

    Wanke, Michael C. (Albuquerque, NM); Allen, S. James (Santa Barbara, CA); Lee, Mark (Albuquerque, NM)

    2008-05-20T23:59:59.000Z

    A terahertz radiation mixer comprises a heterodyned field-effect transistor (FET) having a high electron mobility heterostructure that provides a gatable two-dimensional electron gas in the channel region of the FET. The mixer can operate in either a broadband pinch-off mode or a narrowband resonant plasmon mode by changing a grating gate bias of the FET. The mixer can beat an RF signal frequency against a local oscillator frequency to generate an intermediate frequency difference signal in the microwave region. The mixer can have a low local oscillator power requirement and a large intermediate frequency bandwidth. The terahertz radiation mixer is particularly useful for terahertz applications requiring high resolution.

  5. Radiation shielding composition

    DOE Patents [OSTI]

    Quapp, William J. (Idaho Falls, ID); Lessing, Paul A. (Idaho Falls, ID)

    2000-12-26T23:59:59.000Z

    A composition for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm.sup.3 and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile.

  6. Radiation shielding composition

    DOE Patents [OSTI]

    Quapp, William J. (Idaho Falls, ID); Lessing, Paul A. (Idaho Falls, ID)

    1998-01-01T23:59:59.000Z

    A composition for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm.sup.3 and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile.

  7. Radiation shielding composition

    DOE Patents [OSTI]

    Quapp, W.J.; Lessing, P.A.

    1998-07-28T23:59:59.000Z

    A composition is disclosed for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm{sup 3} and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile. 5 figs.

  8. Time encoded radiation imaging

    DOE Patents [OSTI]

    Marleau, Peter; Brubaker, Erik; Kiff, Scott

    2014-10-21T23:59:59.000Z

    The various technologies presented herein relate to detecting nuclear material at a large stand-off distance. An imaging system is presented which can detect nuclear material by utilizing time encoded imaging relating to maximum and minimum radiation particle counts rates. The imaging system is integrated with a data acquisition system that can utilize variations in photon pulse shape to discriminate between neutron and gamma-ray interactions. Modulation in the detected neutron count rates as a function of the angular orientation of the detector due to attenuation of neighboring detectors is utilized to reconstruct the neutron source distribution over 360 degrees around the imaging system. Neutrons (e.g., fast neutrons) and/or gamma-rays are incident upon scintillation material in the imager, the photons generated by the scintillation material are converted to electrical energy from which the respective neutrons/gamma rays can be determined and, accordingly, a direction to, and the location of, a radiation source identified.

  9. National Ambient Radiation Database

    SciTech Connect (OSTI)

    Dziuban, J.; Sears, R.

    2003-02-25T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA) recently developed a searchable database and website for the Environmental Radiation Ambient Monitoring System (ERAMS) data. This site contains nationwide radiation monitoring data for air particulates, precipitation, drinking water, surface water and pasteurized milk. This site provides location-specific as well as national information on environmental radioactivity across several media. It provides high quality data for assessing public exposure and environmental impacts resulting from nuclear emergencies and provides baseline data during routine conditions. The database and website are accessible at www.epa.gov/enviro/. This site contains (1) a query for the general public which is easy to use--limits the amount of information provided, but includes the ability to graph the data with risk benchmarks and (2) a query for a more technical user which allows access to all of the data in the database, (3) background information on ER AMS.

  10. Handheld CZT radiation detector

    DOE Patents [OSTI]

    Murray, William S.; Butterfield, Kenneth B.; Baird, William

    2004-08-24T23:59:59.000Z

    A handheld CZT radiation detector having a CZT gamma-ray sensor, a multichannel analyzer, a fuzzy-logic component, and a display component is disclosed. The CZT gamma-ray sensor may be a coplanar grid CZT gamma-ray sensor, which provides high-quality gamma-ray analysis at a wide range of operating temperatures. The multichannel analyzer categorizes pulses produce by the CZT gamma-ray sensor into channels (discrete energy levels), resulting in pulse height data. The fuzzy-logic component analyzes the pulse height data and produces a ranked listing of radioisotopes. The fuzzy-logic component is flexible and well-suited to in-field analysis of radioisotopes. The display component may be a personal data assistant, which provides a user-friendly method of interacting with the detector. In addition, the radiation detector may be equipped with a neutron sensor to provide an enhanced mechanism of sensing radioactive materials.

  11. Semiconductor radiation detector

    DOE Patents [OSTI]

    Patt, Bradley E. (Sherman Oaks, CA); Iwanczyk, Jan S. (Los Angeles, CA); Tull, Carolyn R. (Orinda, CA); Vilkelis, Gintas (Westlake Village, CA)

    2002-01-01T23:59:59.000Z

    A semiconductor radiation detector is provided to detect x-ray and light photons. The entrance electrode is segmented by using variable doping concentrations. Further, the entrance electrode is physically segmented by inserting n+ regions between p+ regions. The p+ regions and the n+ regions are individually biased. The detector elements can be used in an array, and the p+ regions and the n+ regions can be biased by applying potential at a single point. The back side of the semiconductor radiation detector has an n+ anode for collecting created charges and a number of p+ cathodes. Biased n+ inserts can be placed between the p+ cathodes, and an internal resistor divider can be used to bias the n+ inserts as well as the p+ cathodes. A polysilicon spiral guard can be implemented surrounding the active area of the entrance electrode or surrounding an array of entrance electrodes.

  12. Photon Clusters in Thermal Radiation

    E-Print Network [OSTI]

    Aleksey Ilyin

    2014-10-30T23:59:59.000Z

    Within the framework of Bose-Einstein statistics, it is shown that the blackbody radiation, in addition to single photons, contains photon clusters, or coalescent photons. The probability to find a k-photon cluster versus radiation frequency and temperature is found, as well as the statistics of clusters. Spectra of photon-cluster radiation are calculated as functions of blackbody temperature. The Planck's radiation law is derived based on the existence of photon clusters. The possibility of experimental observation of photon clusters in thermal radiation is discussed.

  13. Classes -10 Paid Experience -37

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    of the University of Pennsylvania, Thoracic Oncology Research Laboratory, Research Assistant, Philadelphia, PA HSBC

  14. Training For Radiation Emergencies, First Responder Operations...

    Energy Savers [EERE]

    Training For Radiation Emergencies, First Responder Operations - Instructors Guide Training For Radiation Emergencies, First Responder Operations - Instructors Guide COURSE...

  15. POLARIZATION OF THE COSMIC BACKGROUND RADIATION

    E-Print Network [OSTI]

    Lubin, Philip Lubin

    2010-01-01T23:59:59.000Z

    a 45į angle. Radiation whose electric field (polarization)radiation field, it can be uniquely characterized by its electric

  16. Global aspects of radiation memory

    E-Print Network [OSTI]

    J. Winicour

    2014-10-11T23:59:59.000Z

    Gravitational radiation has a memory effect represented by a net change in the relative positions of test particles. Both the linear and nonlinear sources proposed for this radiation memory are of the "electric" type, or E mode, as characterized by the even parity of the polarization pattern. Although "magnetic" type, or B mode, radiation memory is mathematically possible, no physically realistic source has been identified. There is an electromagnetic counterpart to radiation memory in which the velocity of charged particles obtain a net "kick". Again, the physically realistic sources of electromagnetic radiation memory that have been identified are of the electric type. In this paper, a global null cone description of the electromagnetic field is applied to establish the non-existence of B mode radiation memory and the non-existence of E mode radiation memory due to a bound charge distribution.

  17. Method for microbeam radiation therapy

    DOE Patents [OSTI]

    Slatkin, D.N.; Dilmanian, F.A.; Spanne, P.O.

    1994-08-16T23:59:59.000Z

    A method is disclosed of performing radiation therapy on a patient, involving exposing a target, usually a tumor, to a therapeutic dose of high energy electromagnetic radiation, preferably X-ray radiation. The dose is in the form of at least two non-overlapping microbeams of radiation, each microbeam having a width of less than about 1 millimeter. Target tissue exposed to the microbeams receives a radiation dose during the exposure that exceeds the maximum dose that such tissue can survive. Non-target tissue between the microbeams receives a dose of radiation below the threshold amount of radiation that can be survived by the tissue, and thereby permits the non-target tissue to regenerate. The microbeams may be directed at the target from one direction, or from more than one direction in which case the microbeams overlap within the target tissue enhancing the lethal effect of the irradiation while sparing the surrounding healthy tissue. No Drawings

  18. University Partnerships

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof2014National Nuclear23,DiversityFeet)University

  19. Anisotropic radiation elds: causality and quantum statistics

    E-Print Network [OSTI]

    Honingh, Aline

    radiation transport 5 2.1 Radiation transport equation . . . . . . . . . . . . . . . . . . 5 2.2 Closures The transport of radiation through a medium is described by the radiation transport equation for the radiative is used to describe anisotropic radiation. Because the two moment equations do not form a closed set

  20. Influence of Extraterrestrial Radiation on Radiation Portal Monitors

    SciTech Connect (OSTI)

    Keller, Paul E.; Kouzes, Richard T.

    2009-06-01T23:59:59.000Z

    Cosmic radiation and solar flares can be a major source of background radiation at the Earthís surface. This paper examines the relationship between extraterrestrial radiation and the detectable background in radiation portal monitors used for homeland security applications. Background radiation data from 13 radiation portal monitor facilities are examined and compared against external sources of data related to extraterrestrial radiation, including measurements at neutron monitors located at 53 cosmic-ray observatories around the Earth, four polar orbiting satellites, three geostationary satellites, ground-based geomagnetic field data from observatories around the Earth, a solar magnetic index, solar radio flux data, and sunspot activity data. Four-years (January 2003 through December 2006) of data are used in this study, which include the latter part of Solar Cycle 23 as solar activity was on the decline. The analysis shows a significant relationship between some extraterrestrial radiation and the background detected in the radiation portal monitors. A demonstrable decline is shown in the average gamma ray and neutron background at the radiation portal monitors as solar activity declined over the period of the study.

  1. Radiation Field on Superspace

    E-Print Network [OSTI]

    P. F. Gonzalez-Diaz

    1994-03-18T23:59:59.000Z

    We study the dynamics of multiwormhole configurations within the framework of the Euclidean Polyakov approach to string theory, incorporating a modification to the Hamiltonian which makes it impossible to interpret the Coleman Alpha parameters of the effective interactions as a quantum field on superspace, reducible to an infinite tower of fields on space-time. We obtain a Planckian probability measure for the Alphas that allows $\\frac{1}{2}\\alpha^{2}$ to be interpreted as the energy of the quanta of a radiation field on superspace whose values may still fix the coupling constants.

  2. Radiation imaging apparatus

    DOE Patents [OSTI]

    Anger, H.O.; Martin, D.C.; Lampton, M.L.

    1983-07-26T23:59:59.000Z

    A radiation imaging system using a charge multiplier and a position sensitive anode in the form of periodically arranged sets of interconnected anode regions for detecting the position of the centroid of a charge cloud arriving thereat from the charge multiplier. Various forms of improved position sensitive anodes having single plane electrode connections are disclosed. Various analog and digital signal processing systems are disclosed, including systems which use the fast response of microchannel plates, anodes and preamps to perform scintillation pulse height analysis digitally. 15 figs.

  3. Radiation imaging apparatus

    DOE Patents [OSTI]

    Anger, Hal O. (Berkeley, CA); Martin, Donn C. (Berkeley, CA); Lampton, Michael L. (Berkeley, CA)

    1983-01-01T23:59:59.000Z

    A radiation imaging system using a charge multiplier and a position sensitive anode in the form of periodically arranged sets of interconnected anode regions for detecting the position of the centroid of a charge cloud arriving thereat from the charge multiplier. Various forms of improved position sensitive anodes having single plane electrode connections are disclosed. Various analog and digital signal processing systems are disclosed, including systems which use the fast response of microchannel plates, anodes and preamps to perform scintillation pulse height analysis digitally.

  4. Radiation.cdr

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromising Science for1 20115,Performance QualityRadiation August

  5. Courses on Synchrotron Radiation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phases on &gamma;-Al2O3. |ID#:Synchrotron Radiation The following is

  6. Radiation Therapy With Full-Dose Gemcitabine and Oxaliplatin for Unresectable Pancreatic Cancer

    SciTech Connect (OSTI)

    Hunter, Klaudia U.; Feng, Felix Y. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Griffith, Kent A. [Comprehensive Cancer Center Biostatistics Unit, University of Michigan, Ann Arbor, MI (United States); Francis, Isaac R. [Department of Radiology, University of Michigan, Ann Arbor, MI (United States); Lawrence, Theodore S. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Desai, Sameer [Department of Internal Medicine, University of Michigan, Ann Arbor, MI (United States); Murphy, James D. [School of Medicine, University of Michigan, Ann Arbor, MI (United States); Zalupski, Mark M. [Department of Internal Medicine, University of Michigan, Ann Arbor, MI (United States); Ben-Josef, Edgar, E-mail: edgarb@med.umich.edu [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)

    2012-07-01T23:59:59.000Z

    Purpose: We completed a Phase I trial of gemcitabine and oxaliplatin with concurrent radiotherapy in patients with previously untreated pancreatic cancer. The results of a subset of patients with unresectable disease who went on to receive planned additional therapy are reported here. Methods and Materials: All patients received two 28-day cycles of gemcitabine (1,000 mg/m{sup 2} on Days 1, 8, and 15) and oxaliplatin (40-85 mg/m{sup 2} on Days 1 and 15, per a dose-escalation schema). Radiation therapy was delivered concurrently with Cycle 1 (27 Gy in 1.8-Gy fractions). At 9 weeks, patients were reassessed for resectability. Those deemed to have unresectable disease were offered a second round of treatment consisting of 2 cycles of gemcitabine and oxaliplatin and 27 Gy of radiation therapy (total, 54 Gy). Radiation was delivered to the gross tumor volume plus 1 cm by use of a three-dimensional conformal technique. We used the Common Terminology Criteria for Adverse Events to assess acute toxicity. Late toxicity was scored per the Radiation Therapy Oncology Group scale. Computed tomography scans were reviewed to determine pattern of failure, local response, and disease progression. Kaplan-Meier methodology and Cox regression models were used to evaluate survival and freedom from failure. Results: Thirty-two patients from the Phase I dose-escalation study had unresectable disease, three of whom had low-volume metastatic disease. Of this group, 16 patients went on to receive additional therapy to complete a total of 4 cycles of chemotherapy and 54 Gy of concurrent radiation. For this subset, 38% had at least a partial tumor response at a median of 3.2 months. Median survival was 11.8 months (range, 4.4-26.3 months). The 1-year freedom from local progression rate was 93.8% (95% confidence interval, 63.2-99.1). Conclusions: Radiation therapy to 54 Gy with concurrent full-dose gemcitabine and oxaliplatin is well tolerated and results in favorable rates of local tumor response and 1-year freedom from local progression.

  7. Measurement and analysis of near ultraviolet solar radiation

    SciTech Connect (OSTI)

    Mehos, M.S.; Pacheco, K.A.; Link, H.F.

    1991-12-01T23:59:59.000Z

    The photocatalytic detoxification of organic contaminants is currently being investigated by a number of laboratories, universities, and institutions throughout the world. The photocatalytic oxidation process requires that contaminants come in contact with a photocatalyst such as titanium dioxide, under illumination of ultraviolet (UV) radiation in order for the decomposition reaction to take place. Researches from the National Renewable Energy Laboratory (NREL) and Sandia National Laboratories are currently investigating the use of solar energy as a means of driving this photocatalytic process. Measurements of direct-normal and global-horizontal ultraviolet (280--385 nm) and full-spectrum (280--4000 nm) solar radiation taken in Golden, Colorado over a one-year period are analyzed, and comparisons are made with data generated from a clear-sky solar radiation model (BRITE) currently in use for predicting the performance of solar detoxification processes. Analysis of the data indicates a ratio of global-horizontal ultraviolet to full-spectrum radiation of 4%--6% that is weakly dependent on air mass. Conversely, data for direct-normal ultraviolet radiation indicate a much large dependence on air mass, with a ratio of approximately 5% at low air mass to 1% at higher at masses. Results show excellent agreement between the measured data and clear-sky predictions for both the ultraviolet and the full-spectrum global-horizontal radiation. For the direct-normal components, however, the tendency is for the clear-sky model to underpredict the measured that. Averaged monthly ultraviolet radiation available for the detoxification process indicates that the global-horizontal component of the radiation exceeds the direct-normal component throughout the year. 9 refs., 7 figs.

  8. Virtual Gamma Ray Radiation Sources through Neutron Radiative Capture

    SciTech Connect (OSTI)

    Scott Wilde, Raymond Keegan

    2008-07-01T23:59:59.000Z

    The countrate response of a gamma spectrometry system from a neutron radiation source behind a plane of moderating material doped with a nuclide of a large radiative neutron capture cross-section exhibits a countrate response analogous to a gamma radiation source at the same position from the detector. Using a planar, surface area of the neutron moderating material exposed to the neutron radiation produces a larger area under the prompt gamma ray peak in the detector than a smaller area of dimensions relative to the active volume of the gamma detection system.

  9. Measurement of Radiation Damage on Silica Aerogel \\v Cerenkov Radiator

    E-Print Network [OSTI]

    S. K. Sahu et al

    1996-04-11T23:59:59.000Z

    We measured the radiation damage on silica aerogel \\v Cerenkov radiators originally developed for the $B$-factory experiment at KEK. Refractive index of the aerogel samples ranged from 1.012 to 1.028. The samples were irradiated up to 9.8~MRad of equivalent dose. Measurements of transmittance and refractive index were carried out and these samples were found to be radiation hard. Deteriorations in transparency and changes of refractive index were observed to be less than 1.3\\% and 0.001 at 90\\% confidence level, respectively. Prospects of using aerogels under high-radiation environment are discussed.

  10. Radiation Control Program and Radiation Control Act (Nebraska)

    Broader source: Energy.gov [DOE]

    This statute authorizes the state to implement a regulatory program for sources of radiation, and contains rules for the Department, licensing and registration, and taxation of radioactive materials.

  11. Radiation transport in inhomogeneous media

    SciTech Connect (OSTI)

    Keiter, Paul; Gunderson, Mark [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Foster, John; Rosen, Paula; Comley, Andrew; Taylor, Mark [AWE Aldermaston, Reading, RG7 4PR (United Kingdom); Perry, Ted [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

    2008-05-15T23:59:59.000Z

    Calculations of radiation transport in heated materials are greatly complicated by the presence of regions in which two or more materials are inhomogeneously mixed. This phenomenon is important in many systems, such as astrophysical systems where density clumps can be found in star-forming regions and molecular clouds. Laboratory experiments have been designed to test the modeling of radiation transport through inhomogeneous plasmas. A laser-heated hohlraum is used as a thermal source to drive radiation through polymer foam containing randomly distributed gold particles. Experimental measurements of radiation transport in foams with gold particle sizes ranging from 5-9 {mu}m to submicrometer diameters as well as the homogeneous foam case are presented. The simulation results of the radiation transport are compared to the experiment and show that an inhomogeneous transport model must be applied to explain radiation transport in foams loaded with 5 {mu}m diameter gold particles.

  12. RADIATIVE RAYLEIGH-TAYLOR INSTABILITIES

    SciTech Connect (OSTI)

    Jacquet, Emmanuel [Laboratoire de Mineralogie et Cosmochimie de Museum (LMCM), CNRS and Museum National d'Histoire Naturelle, UMR 7202, 57 rue Cuvier, 75005 Paris (France); Krumholz, Mark R., E-mail: ejacquet@mnhn.fr, E-mail: krumholz@ucolick.org [Department of Astronomy, University of California, Santa Cruz, CA 95064 (United States)

    2011-04-01T23:59:59.000Z

    We perform analytic linear stability analyses of an interface separating two stratified media threaded by a radiation flux, a configuration relevant in several astrophysical contexts. We develop a general framework for analyzing such systems and obtain exact stability conditions in several limiting cases. In the optically thin, isothermal regime, where the discontinuity is chemical in nature (e.g., at the boundary of a radiation pressure-driven H II region), radiation acts as part of an effective gravitational field, and instability arises if the effective gravity per unit volume toward the interface overcomes that away from it. In the optically thick 'adiabatic' regime where the total (gas plus radiation) specific entropy of a Lagrangian fluid element is conserved, for example at the edge of radiation pressure-driven bubble around a young massive star, we show that radiation acts like a modified equation of state and derive a generalized version of the classical Rayleigh-Taylor stability condition.

  13. Participating Colleges & Universities (2008--2010)

    E-Print Network [OSTI]

    Participating Colleges & Universities (2008--2010) Bowling Green State University Capital University Capital University (Center for Lifelong Learning) DeVry University Fairmount State University Franklin University Heidelberg University Indiana Wesleyan University Kent State University (College

  14. 11/5/2013 Department of Biology, University of Washington Guidelines for Small Awards

    E-Print Network [OSTI]

    Carrington, Emily

    (biosafety, select agents, hazardous waste, radiation) Security and exports #12;SMALL AWARD Gift or Grant, approvals and protocols need to be on file to ensure compliance with University and Federal and State

  15. Radiation Embrittlement Archive Project

    SciTech Connect (OSTI)

    Klasky, Hilda B [ORNL] [ORNL; Bass, Bennett Richard [ORNL] [ORNL; Williams, Paul T [ORNL] [ORNL; Phillips, Rick [ORNL] [ORNL; Erickson, Marjorie A [ORNL] [ORNL; Kirk, Mark T [ORNL] [ORNL; Stevens, Gary L [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    The Radiation Embrittlement Archive Project (REAP), which is being conducted by the Probabilistic Integrity Safety Assessment (PISA) Program at Oak Ridge National Laboratory under funding from the U.S. Nuclear Regulatory Commission s (NRC) Office of Nuclear Regulatory Research, aims to provide an archival source of information about the effect of neutron radiation on the properties of reactor pressure vessel (RPV) steels. Specifically, this project is an effort to create an Internet-accessible RPV steel embrittlement database. The project s website, https://reap.ornl.gov, provides information in two forms: (1) a document archive with surveillance capsule(s) reports and related technical reports, in PDF format, for the 104 commercial nuclear power plants (NPPs) in the United States, with similar reports from other countries; and (2) a relational database archive with detailed information extracted from the reports. The REAP project focuses on data collected from surveillance capsule programs for light-water moderated, nuclear power reactor vessels operated in the United States, including data on Charpy V-notch energy testing results, tensile properties, composition, exposure temperatures, neutron flux (rate of irradiation damage), and fluence, (Fast Neutron Fluence a cumulative measure of irradiation for E>1 MeV). Additionally, REAP contains data from surveillance programs conducted in other countries. REAP is presently being extended to focus on embrittlement data analysis, as well. This paper summarizes the current status of the REAP database and highlights opportunities to access the data and to participate in the project.

  16. A Phase I Study of Short-Course Accelerated Whole Brain Radiation Therapy for Multiple Brain Metastases

    SciTech Connect (OSTI)

    Caravatta, Luciana; Deodato, Francesco; Ferro, Marica [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Macchia, Gabriella, E-mail: gmacchia@rm.unicatt.it [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Massaccesi, Mariangela [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Radiation Oncology, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Cilla, Savino [Medical Physics Unit, Fondazione di Ricerca e Cura 'Giovanni Paolo II,' Universita Cattolica del S. Cuore, Campobasso (Italy)] [Medical Physics Unit, Fondazione di Ricerca e Cura 'Giovanni Paolo II,' Universita Cattolica del S. Cuore, Campobasso (Italy); Padula, Gilbert D.A. [Department of Radiation Oncology, The Lacks Cancer Center Saint Mary's Health Care, Grand Rapids, Michigan (United States)] [Department of Radiation Oncology, The Lacks Cancer Center Saint Mary's Health Care, Grand Rapids, Michigan (United States); Mignogna, Samantha; Tambaro, Rosa [Department of Palliative Therapies, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy)] [Department of Palliative Therapies, Fondazione di Ricerca e Cura 'Giovanni Paolo II', Universita Cattolica del S. Cuore, Campobasso (Italy); Carrozza, Francesco [Department of Oncology, A. Cardarelli Hospital, Campobasso (Italy)] [Department of Oncology, A. Cardarelli Hospital, Campobasso (Italy); Flocco, Mariano [Madre Teresa di Calcutta Hospice, Larino (Italy)] [Madre Teresa di Calcutta Hospice, Larino (Italy); Cantore, Giampaolo [Department of Neurological Sciences, Istituto Neurologico Mediterraneo Neuromed, Istituto di Ricovero e Cura a Carattere Scientifico, Pozzilli (Italy)] [Department of Neurological Sciences, Istituto Neurologico Mediterraneo Neuromed, Istituto di Ricovero e Cura a Carattere Scientifico, Pozzilli (Italy); Scapati, Andrea [Department of Radiation Oncology, 'San Francesco' Hospital, Nuoro (Italy)] [Department of Radiation Oncology, 'San Francesco' Hospital, Nuoro (Italy); Buwenge, Milly [Department of Radiotherapy, Mulago Hospital, Kampala (Uganda)] [Department of Radiotherapy, Mulago Hospital, Kampala (Uganda); and others

    2012-11-15T23:59:59.000Z

    Purpose: To define the maximum tolerated dose (MTD) of a SHort-course Accelerated whole brain RadiatiON therapy (SHARON) in the treatment of patients with multiple brain metastases. Methods and Materials: A phase 1 trial in 4 dose-escalation steps was designed: 12 Gy (3 Gy per fraction), 14 Gy (3.5 Gy per fraction), 16 Gy (4 Gy per fraction), and 18 Gy (4.5 Gy per fraction). Eligibility criteria included patients with unfavorable recursive partitioning analysis (RPA) class > or =2 with at least 3 brain metastases or metastatic disease in more than 3 organ systems, and Eastern Cooperative Oncology Group (ECOG) performance status {<=}3. Treatment was delivered in 2 days with twice-daily fractionation. Patients were treated in cohorts of 6-12 to define the MTD. The dose-limiting toxicity (DLT) was defined as any acute toxicity {>=}grade 3, according to the Radiation Therapy Oncology Group scale. Information on the status of the main neurologic symptoms and quality of life were recorded. Results: Characteristics of the 49 enrolled patients were as follows: male/female, 30/19; median age, 66 years (range, 23-83 years). ECOG performance status was <3 in 46 patients (94%). Fourteen patients (29%) were considered to be in recursive partitioning analysis (RPA) class 3. Grade 1-2 acute neurologic (26.4%) and skin (18.3%) toxicities were recorded. Only 1 patient experienced DLT (neurologic grade 3 acute toxicity). With a median follow-up time of 5 months (range, 1-23 months), no late toxicities have been observed. Three weeks after treatment, 16 of 21 symptomatic patients showed an improvement or resolution of presenting symptoms (overall symptom response rate, 76.2%; confidence interval 0.95: 60.3-95.9%). Conclusions: Short-course accelerated radiation therapy in twice-daily fractions for 2 consecutive days is tolerated up to a total dose of 18 Gy. A phase 2 study has been planned to evaluate the efficacy on overall survival, symptom control, and quality of life indices.

  17. Radiation Safety Work Control Form

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Radiation Safety Work Control Form (see instructions on pg-3) Rev. May 2014 Area: Form : Date: Preliminary Applicability Screen: (a) Will closing the beam line injection stoppers...

  18. Electromagnetic radiation by gravitating bodies

    E-Print Network [OSTI]

    Iwo Bialynicki-Birula; Zofia Bialynicka-Birula

    2008-05-06T23:59:59.000Z

    Gravitating bodies in motion, regardless of their constitution, always produce electromagnetic radiation in the form of photon pairs. This phenomenon is an analog of the radiation caused by the motion of dielectric (or magnetic) bodies. It is a member of a wide class of phenomena named dynamical Casimir effects, and it may be viewed as the squeezing of the electromagnetic vacuum. Production of photon pairs is a purely quantum-mechanical effect. Unfortunately, as we show, the emitted radiation is extremely weak as compared to radiation produced by other mechanisms.

  19. Radiator Labs | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    distribution system via a network of pipes and radiators. There is no way to control heat transfer through this network, so building managers configure boiler systems to treat...

  20. Enhanced radiation resistant fiber optics

    DOE Patents [OSTI]

    Lyons, P.B.; Looney, L.D.

    1993-11-30T23:59:59.000Z

    A process for producing an optical fiber having enhanced radiation resistance is provided, the process including maintaining an optical fiber within a hydrogen-containing atmosphere for sufficient time to yield a hydrogen-permeated optical fiber having an elevated internal hydrogen concentration, and irradiating the hydrogen-permeated optical fiber at a time while the optical fiber has an elevated internal hydrogen concentration with a source of ionizing radiation. The radiation source is typically a cobalt-60 source and the fiber is pre-irradiated with a dose level up to about 1000 kilorads of radiation. 4 figures.

  1. Quality Services: Radiation (New York)

    Broader source: Energy.gov [DOE]

    These regulations establish standards for protection against ionizing radiation resulting from the disposal and discharge of radioactive material to the environment. The regulations apply to any...

  2. University Libraries Technology Plan

    E-Print Network [OSTI]

    Moore, Paul A.

    Libraries Bowling Green State University #12;Table of Contents Introduction ..................................................................19 Page 2 of 19 Technology Plan, 2003-2005 University Libraries Bowling Green State University #12University Libraries Technology Plan 2003-2005 Page 1 of 19 Technology Plan, 2003-2005 University

  3. DIMACS Center Rutgers University

    E-Print Network [OSTI]

    , Johns Hopkins University Andrew Patrick, NRC Canada Norman Sadeh, Carnegie Mellon University Other Cranor, AT&T Mark Ackerman, University of Michigan Fabian Monrose, Johns Hopkins University Andrew Patrick, NRC Canada Norman Sadeh, Carnegie Mellon University Working Group: Usable Privacy and Security

  4. Randomized Noninferiority Trial of Reduced High-Dose Volume Versus Standard Volume Radiation Therapy for Muscle-Invasive Bladder Cancer: Results of the BC2001 Trial (CRUK/01/004)

    SciTech Connect (OSTI)

    Huddart, Robert A., E-mail: robert.huddart@icr.ac.uk [Institute of Cancer Research, Royal Marsden NHSFT (National Health Service Foundation Trust) (United Kingdom); Hall, Emma [Institute of Cancer Research (United Kingdom); Hussain, Syed A. [University of Liverpool (United Kingdom); Jenkins, Peter [Gloucestershire Hospitals NHSFT (United Kingdom); Rawlings, Christine [South Devon Healthcare NHSFT (United Kingdom); Tremlett, Jean [Brighton and Sussex University Hospitals (United Kingdom); Crundwell, Malcolm [Royal Devon and Exeter NHSFT (United Kingdom); Adab, Fawzi A. [University Hospital of North Staffordshire NHS Trust (United Kingdom); Sheehan, Denise [Royal Devon and Exeter NHSFT (United Kingdom); Syndikus, Isabel [Clatterbridge Cancer Centre NHSFT (United Kingdom); Hendron, Carey [University of Birmingham (United Kingdom); Lewis, Rebecca; Waters, Rachel [Institute of Cancer Research (United Kingdom); James, Nicholas D. [University of Birmingham (United Kingdom)

    2013-10-01T23:59:59.000Z

    Purpose: To test whether reducing radiation dose to uninvolved bladder while maintaining dose to the tumor would reduce side effects without impairing local control in the treatment of muscle-invasive bladder cancer. Methods and Materials: In this phase III multicenter trial, 219 patients were randomized to standard whole-bladder radiation therapy (sRT) or reduced high-dose volume radiation therapy (RHDVRT) that aimed to deliver full radiation dose to the tumor and 80% of maximum dose to the uninvolved bladder. Participants were also randomly assigned to receive radiation therapy alone or radiation therapy plus chemotherapy in a partial 2 ◊ 2 factorial design. The primary endpoints for the radiation therapy volume comparison were late toxicity and time to locoregional recurrence (with a noninferiority margin of 10% at 2 years). Results: Overall incidence of late toxicity was less than predicted, with a cumulative 2-year Radiation Therapy Oncology Group grade 3/4 toxicity rate of 13% (95% confidence interval 8%, 20%) and no statistically significant differences between groups. The difference in 2-year locoregional recurrence free rate (RHDVRT ? sRT) was 6.4% (95% confidence interval ?7.3%, 16.8%) under an intention to treat analysis and 2.6% (?12.8%, 14.6%) in the ďper-protocolĒ population. Conclusions: In this study RHDVRT did not result in a statistically significant reduction in late side effects compared with sRT, and noninferiority of locoregional control could not be concluded formally. However, overall low rates of clinically significant toxicity combined with low rates of invasive bladder cancer relapse confirm that (chemo)radiation therapy is a valid option for the treatment of muscle-invasive bladder cancer.

  5. Observational evidence favors a static universe

    E-Print Network [OSTI]

    David F. Crawford

    2014-07-09T23:59:59.000Z

    The common attribute of all Big Bang cosmologies is that they are based on the assumption that the universe is expanding. However examination of the evidence for this expansion clearly favours a static universe. The major topics considered are: Tolman surface brightness, angular size, type 1a supernovae, gamma ray bursts, galaxy distributions, quasar distributions, X-ray background radiation, cosmic microwave background radiation, radio source counts, quasar variability and the Butcher--Oemler effect. An analysis of the best raw data for these topics shows that they are consistent with expansion only if there is evolution that cancels the effects of expansion. An alternate cosmology, curvature cosmology, is in full agreement with the raw data. This tired-light cosmology predicts a well defined static and stable universe and is fully described. It not only predicts accurate values for the Hubble constant and the temperature of cosmic microwave background radiation but shows excellent agreement with most of the topics considered. Curvature cosmology also predicts the deficiency in solar neutrino production rate and can explain the anomalous acceleration of {\\it Pioneer} 10.

  6. RADIATION SAFETY COMMITTEE The Radiation Safety Committee shall advise the Provost on all policy matters relating to radiation safety;

    E-Print Network [OSTI]

    Sze, Lawrence

    RADIATION SAFETY COMMITTEE Functions The Radiation Safety Committee shall advise the Provost on all policy matters relating to radiation safety; formulate campus radiation safety policies in compliance the Risk Manager) monitor the performance of the Radiation Safety Officer as it relates to implementation

  7. Physics-Based GOES Satellite Product for Use in NREL's National Solar Radiation Database: Preprint

    SciTech Connect (OSTI)

    Sengupta, M.; Habte, A.; Gotseff, P.; Weekley, A.; Lopez, A.; Molling, C.; Heidinger, A.

    2014-07-01T23:59:59.000Z

    The National Renewable Energy Laboratory (NREL), University of Wisconsin, and National Oceanic Atmospheric Administration are collaborating to investigate the integration of the Satellite Algorithm for Shortwave Radiation Budget (SASRAB) products into future versions of NREL's 4-km by 4-km gridded National Solar Radiation Database (NSRDB). This paper describes a method to select an improved clear-sky model that could replace the current SASRAB global horizontal irradiance and direct normal irradiances reported during clear-sky conditions.

  8. Detecting solar chameleons through radiation pressure

    E-Print Network [OSTI]

    Baum, S; Hoffmann, D H H; Karuza, M; Semertzidis, Y K; Upadhye, A; Zioutas, K

    2014-01-01T23:59:59.000Z

    Light scalar fields can drive the accelerated expansion of the universe. Hence, they are obvious dark energy candidates. To make such models compatible with tests of General Relativity in the solar system and "fifth force" searches on Earth, one needs to screen them. One possibility is the so-called "chameleon" mechanism, which renders an effective mass depending on the local matter density. If chameleon particles exist, they can be produced in the sun and detected on earth exploiting the equivalent of a radiation pressure. Since their effective mass scales with the local matter density, chameleons can be reflected by a dense medium if their effective mass becomes greater than their total energy. Thus, under appropriate conditions, a flux of solar chameleons may be sensed by detecting the total instantaneous momentum transferred to a suitable opto-mechanical force/pressure sensor. We calculate the solar chameleon spectrum and the reach in the chameleon parameter space of an experiment using the preliminary re...

  9. Stanford University Conservation

    E-Print Network [OSTI]

    Stanford University Hearing Conservation Program April 2006 #12;Stanford University HEARING CONSERVATION PROGRAM CONTENTS PAGE 1.0 INTRODUCTION #12;HEARING CONSERVATION PROGRAM 1.0 INTRODUCTION "It is the policy of Stanford University to maintain

  10. Operating and Safety Procedure for all Radiation Devices in Rooms 1420, 2407 and 2408, Chemistry, Texas A & M

    E-Print Network [OSTI]

    Meagher, Mary

    device. 1.5 Service personal : Individual who is not an employee of Texas A & M University whose dutiesOperating and Safety Procedure for all Radiation Devices in Rooms 1420, 2407 and 2408, Chemistry devices. 1.2 Instrument User : An employee of Texas A & M University who has been trained in the use

  11. Lack of benefit of pelvic radiation in prostate cancer patients with a high risk of positive pelvic lymph nodes treated with high-dose radiation

    SciTech Connect (OSTI)

    Vargas, Carlos Enrique [William Beaumont Hospital, Royal Oak, MI (United States); Galalae, Razavan [Kiel University Hospital, Kiel (Germany); Demanes, Jeffrey [California Endocuritherapy Cancer Center, Oakland, CA (United States); Harsolia, Asif [William Beaumont Hospital, Royal Oak, MI (United States); Meldolesi, Elisa [William Beaumont Hospital, Royal Oak, MI (United States); Nuernberg, Nils [Municipal Hospital Kiel, Kiel (Germany); Schour, Lionel [California Endocuritherapy Cancer Center, Oakland, CA (United States); Martinez, Alvaro [William Beaumont Hospital, Royal Oak, MI (United States)]. E-mail: amartinez@beaumont.edu

    2005-12-01T23:59:59.000Z

    Purpose: The use of pelvic radiation for patients with a high risk of lymph node (LN) metastasis (>15%) remains controversial. We reviewed the data at three institutions treating patients with a combination of external-beam radiation therapy and high-dose-rate brachytherapy to address the prognostic implications of the use of the Roach formula and the benefit of pelvic treatment. Methods and Materials: From 1986 to 2003, 1,491 patients were treated with external-beam radiation therapy and high-dose-rate brachytherapy. The Roach formula [2/3 prostate-specific antigen + (Gleason score -6) x 10] could be calculated for 1,357 patients. Group I consisted of patients having a risk of positive LN {<=}15% (n = 761), Group II had a risk >15% and {<=}30% (n = 422), and Group III had a risk of LN disease >30% (n 174). A >15% risk of having positive LN was found in 596 patients and was used to determine the benefit of pelvic radiation. The pelvis was treated at two of the cancer centers (n = 312), whereas at the third center (n = 284) radiation therapy was delivered to the prostate and seminal vesicles alone. Average biologic effective dose was {>=}100 Gy ({alpha}{beta} = 1.2). Biochemical failure was as per the American Society for Therapeutic Radiology and Oncology definition. Statistics included the log-rank test as well as Cox univariate and multivariate analysis. Results: For all 596 patients with a positive LN risk >15%, median follow-up was 4.3 years, with a mean of 4.8 years. For all cases, median follow-up was 4 years and mean follow-up was 4.4 years. Five-year results for the three groups based on their risk of positive LN were significantly different in terms of biochemical failure (p < 0.001), clinical control (p < 0.001), disease-free survival excluding biochemical failure (p < 0.001), cause-specific survival (p < 0.001), and overall survival (p < 0.001). For all patients with a risk of positive LN >15% (n 596), Group II (>15-30% risk), or Group III (>30% risk), no benefit was seen in the 5-year rates of clinical failure, cause-specific survival, or overall survival with pelvic radiation. In the Cox multivariate analysis for cause-specific survival, Gleason score (p = 0.009, hazard ratio [HR] 3.1), T stage (p = 0.03, HR 1.8), and year of treatment (p = 0.05, HR 1.1) were significant. A log-rank test for cause-specific survival for all patients (n = 577) by the use of pelvic radiation was not significant (p = 0.99) accounting for high-dose-rate brachytherapy dose, neoadjuvant hormones, Gleason score, prostate-specific antigen, T stage, and year of treatment as covariates. Conclusions: The use of the Roach formula to stratify patients for clinical and biochemical outcomes is excellent. Pelvic radiation added to high prostate radiation doses did not show a clinical benefit for patients at a high risk of pelvic LN disease (>15%) selected using the Roach formula.

  12. Appendix F. Radiation Annual Site Environmental Report

    E-Print Network [OSTI]

    Pennycook, Steve

    from natural and human-made sources. People are exposed to naturally occurring radiation constantlyAppendix F. Radiation #12;Annual Site Environmental Report Appendix F. Radiation F-3 Appendix F. Radiation This appendix presents basic facts about radiation. The information is intended to be a basis

  13. Superstring dominated early universe and epoch dependent gauge coupling

    E-Print Network [OSTI]

    A. K. Chaudhuri

    1997-06-13T23:59:59.000Z

    We have explored the possibility that the universe at very early stage was dominated by (macroscopic) heterotic strings. We have found that the dimensionless parameter $G\\mu$ for the heterotic strings varies from $10^{-2}$ to $10^{-4}$ as the universe evolve from the matter dominance to radiation dominance. This led to the interesting consequence of epoch dependent gauge coupling constant. The gauge coupling constant at early times was found to be much stronger than the present strong interaction.

  14. Review Article RADIATION SHIELDING TECHNOLOGY

    E-Print Network [OSTI]

    Shultis, J. Kenneth

    Review Article RADIATION SHIELDING TECHNOLOGY J. Kenneth Shultis and Richard E. Faw* Abstract Physics Society INTRODUCTION THIS IS a review of the technology of shielding against the effects to the review. The first treats the evolution of radiation-shielding technology from the beginning of the 20th

  15. Radiation damping, noncommutativity and duality

    E-Print Network [OSTI]

    E. M. C. Abreu; A. C. R. Mendes; C. Neves; W. Oliveira

    2008-10-15T23:59:59.000Z

    In this work, our main objective is to construct a N=2 supersymmetric extension of the nonrelativistic $(2+1)$-dimensional model describing the radiation damping on the noncommutative plane with scalar (electric) and vector (magnetic) interactions by the N=2 superfield technique. We also introduce a dual equivalent action to the radiation damping one using the Noether procedure.

  16. Hawking radiation and Quasinormal modes

    E-Print Network [OSTI]

    SangChul Yoon

    2005-10-05T23:59:59.000Z

    The spectrum of Hawking radiation by quantum fields in the curved spacetime is continuous, so the explanation of Hawking radiation using quasinormal modes can be suspected to be impossible. We find that quasinormal modes do not explain the relation between the state observed in a region far away from a black hole and the short distance behavior of the state on the horizon.

  17. 4, 699707, 2007 Radiation importance

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    and inactive convection. 1 Introduction Given that for much of the world ocean, the radiation termsOSD 4, 699­707, 2007 Radiation importance D. Nof and L. Yu Title Page Abstract Introduction Discussion EGU Ocean Sci. Discuss., 4, 699­707, 2007 www.ocean-sci-discuss.net/4/699/2007/ © Author(s) 2007

  18. RADIATION AND CLOUD MONITORING STATIONS

    E-Print Network [OSTI]

    Reeves, Geoffrey D.

    how they affect the energy balance between incoming solar radiation and heat re-radiated from Earth, and moisture content; area cloud coverage; solar and terrestrial radia- tion; and standard meteorological region and the North Slope of Alaska. ARCS sites are a component of the Department of Energy

  19. Integrating fiber optic radiation dosimeter

    SciTech Connect (OSTI)

    Soltani, P.K.; Wrigley, C.Y.; Storti, G.M.; Creager, R.E.

    1989-03-01T23:59:59.000Z

    The purpose of this research effort was to determine the feasibility of forming a radiation sensor coupled to an optical fiber capable of measuring gamma photon, x-ray, and beta particle dose rates and integrated dose, and to construct a prototype dosimeter read-out system utilizing the fiber optic sensor. The key component of the prototype dosimeter system is a newly developed radiation sensitive storage phosphor. When this phosphor is excited by energetic radiation, a proportionate population of electron-hole pairs are created which become trapped at specific impurities within the phosphor. Trapped electrons can subsequently be stimulated optically with near-infrared at approximately 1 micrometer wavelength; the electrons can recombine with holes at luminescent centers to produce a luminescence which is directly proportional to the trapped electron population, and thus to the radiation exposure. By attaching the phosphor to the end of an optical fiber, it is possible to transmit both the IR optical stimulation and the characteristic phosphor luminescence through the fiber to and from the read-out instrument, which can be located far (e.g., kilometers) from the radiation field. This document reports on the specific design of the prototype system and its operating characteristics, including its sensitivity to various radiation dose rates and energies, its dynamic range, signal-to-noise ratio at various radiation intensities, and other system characteristics. Additionally, the radiation hardness of the phosphor and fiber are evaluated. 17 refs., 29 figs., 5 tabs.

  20. Current Status of the Synchrotron Radiation Center

    SciTech Connect (OSTI)

    Kinraide, R.; Moore, C.J.; Jacobs, K.D.; Severson, M.; Bissen, M.J.; Frazer, B.; Bisognano, J.J.; Bosch, R.A.; Eisert, D.; Fisher, M.; Green, M.A.; Gundelach, C.T.; Hansen, R.W.C.; Hochst, H.; Julian, R.L.; Keil, R.; Kleman, K.; Kubala, T.; Legg, R.A.; Pedley, B. [Synchrotron Radiation Center (United States)] [and others

    2004-05-12T23:59:59.000Z

    The Synchrotron Radiation Center (SRC) operates the Aladdin electron storage ring at energies of 800 MeV or 1 GeV in support of a broad range of national and international research programs. A low emittance configuration is in routine operation during 800-MeV shifts and offers improved photon flux density with about the same beam lifetime. An improved undulator compensation algorithm and new optical beam position monitors have been implemented improving beam stability and maintaining vertical beam size variations to < 2% peak-to-peak during undulator scanning. Instrumentation initiatives include construction of a modified Wadsworth beamline (7.8 - 50 eV) and a variable-line-spacing plane-grating monochromator (VLS-PGM, 75 - 2000 eV) to utilize radiation from a permanent magnet undulator. The Wadsworth beamline is being commissioned for photoelectron spectroscopy (PES) experiments using high-resolution Scienta analyzers. The VLS-PGM is being constructed for experiments that require higher photon energies and high flux density such as x-ray photoemission electron microscopy (X-PEEM) and x-ray absorption spectroscopy (XAS). It is scheduled to be available in early 2004. Recent research at the SRC has produced exciting results in a variety of fields, culminating in eight articles published in Physical Review Letters and three in Nature since October 2002, in addition to articles in many other publications. An outreach program offers research experiences for undergraduates and provides the general public with an awareness of synchrotron radiation. Hands-on workshops and activities on FTIR microscopy and X-PEEM are offered for graduate students and scientists. SRC sponsors a summer Research Experience for Undergraduates (REU) program and offers opportunities to non-research universities and high schools. Tours and educational events are coordinated with local civic groups and schools. Open houses are offered that include tours, demonstrations, and family activities.

  1. Transition Radiation in QCD matter

    E-Print Network [OSTI]

    Magdalena Djordjevic

    2005-12-22T23:59:59.000Z

    In ultrarelativistic heavy ion collisions a finite size QCD medium is created. In this paper we compute radiative energy loss to zeroth order in opacity by taking into account finite size effects. Transition radiation occurs on the boundary between the finite size medium and the vacuum, and we show that it lowers the difference between medium and vacuum zeroth order radiative energy loss relative to the infinite size medium case. Further, in all previous computations of light parton radiation to zeroth order in opacity, there was a divergence caused by the fact that the energy loss is infinite in the vacuum and finite in the QCD medium. We show that this infinite discontinuity is naturally regulated by including the transition radiation.

  2. Abdominal radiation causes bacterial translocation

    SciTech Connect (OSTI)

    Guzman-Stein, G.; Bonsack, M.; Liberty, J.; Delaney, J.P.

    1989-02-01T23:59:59.000Z

    The purpose of this study was to determine if a single dose of radiation to the rat abdomen leads to bacterial translocation into the mesenteric lymph nodes (MLN). A second issue addressed was whether translocation correlates with anatomic damage to the mucosa. The radiated group (1100 cGy) which received anesthesia also was compared with a control group and a third group which received anesthesia alone but no abdominal radiation. Abdominal radiation lead to 100% positive cultures of MLN between 12 hr and 4 days postradiation. Bacterial translocation was almost nonexistent in the control and anesthesia group. Signs of inflammation and ulceration of the intestinal mucosa were not seen until Day 3 postradiation. Mucosal damage was maximal by Day 4. Bacterial translocation onto the MLN after a single dose of abdominal radiation was not apparently dependent on anatomical, histologic damage of the mucosa.

  3. Static Universe: Infinite, Eternal and Self-Sustainable

    E-Print Network [OSTI]

    E. Lopez Sandoval

    2012-06-25T23:59:59.000Z

    In this work, we present a study like a "stellar dynamics" model of an infinite Universe, in which the matter distribution follow a relationship inversely proportional to the square power with respect to the distance from the center of rotation of cluster and supercluster of galaxies (that have a common centre of rotation). In this study, we considered that the Universe have infinite centers similar in structure and in dynamic equilibrium between them. The stars in the galaxies are supposed to be homogeneously distributed with a spherical symmetry and with an average radius and, in turn, the galaxies in the Universe. Also, we consider a smoothed potential of this kind of universe and study the effect of gravity in the radiation of the stars: applying the equivalence principle we obtain a mathematical expression for the Hubble's law and a formula for its redshift that could explain this phenomenon like a gravitational effect. Also we obtain an approximated calculation of the Cosmic Background Radiation (CBR), taking as hypothesis that this radiation is the light of all stars in the Universe that arrive until us with an extreme gravitational redshift. In conclusion, we present here an alternative explanation for the redshift and CBR, like an alternative to the presented by the Big Bang theory, or Steady State theory, postulating in consequence a new theory about the structure of the Universe: static, infinite, eternal and self-sustainable.

  4. Ten scenarios from early radiation to late time acceleration with a minimally coupled dark energy

    E-Print Network [OSTI]

    Fay, Stephane

    2015-01-01T23:59:59.000Z

    We consider General Relativity with matter, radiation and a minimally coupled dark energy defined by an equation of state w. Using dynamical system method, we find the equilibrium points of such a theory assuming an expanding Universe and a positive dark energy density. Two of these points correspond to classical radiation and matter dominated epochs for the Universe. For the other points, dark energy mimics matter, radiation or accelerates Universe expansion. We then look for possible sequences of epochs describing a Universe starting with some radiation dominated epoch(s) (mimicked or not by dark energy), then matter dominated epoch(s) (mimicked or not by dark energy) and ending with an accelerated expansion. We find ten sequences able to follow this Universe history without singular behaviour of w at some saddle points. Most of them are new in dark energy literature. To get more than these ten sequences, w has to be singular at some specific saddle equilibrium points. This is an unusual mathematical proper...

  5. Radiation Safety Committee Laser Use Registration Form

    E-Print Network [OSTI]

    de Lijser, Peter

    Radiation Safety Committee Laser Use Registration Form Pulsed Duration (sec) Average Power: Pulse operating procedures and specific approval conditions required by the Radiation Safety Committee now of Radiation Safety Committee Chair Date #12;

  6. Radiative and climate impacts of absorbing aerosols

    E-Print Network [OSTI]

    Zhu, Aihua

    2010-01-01T23:59:59.000Z

    incident radiation are distinguished, and albedos for oceanOceans using multiple satellite datasets in conjunction with MACR (Monte Carlo Aerosol-Cloud-Radiation)ocean temperature is coupled with the rest of the climate system, the dimming of surface radiation

  7. THE RADIATION CHEMISTRY OP AMINO ACIDS, PEPTIDES AND PROTEINS IN RELATION TO THE RADIATION STERILIZATION OF HIGH-PROTEIN FOODS

    E-Print Network [OSTI]

    Garrison, W.M.

    2010-01-01T23:59:59.000Z

    to Various Ionizing Radiations. Radiat. Res. , 22, 694 (1968). W. M. Garrison, Radiation Induced Reactions of AminoFrozen Aqueous Solutions, in Radiation Chemistry of Aqueous

  8. Photochemistry and Photobiology, 2006, 82: 12791284 Research Note

    E-Print Network [OSTI]

    Yodh, Arjun G.

    Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA 3 Department of Urology to cause cellular and vascular tumor damage. Tissue oxygen concen- tration, in turn, is influenced by blood reactions producing necrosis and apoptosis of tumor cells and vascular damage. Tissue oxygen concentration

  9. Listmode-Driven Optimal Gating (OG) Respiratory Motion Management: Potential Impact On Quantitative PET Imaging

    E-Print Network [OSTI]

    Kay, Mark A.

    PET Imaging K Lee*, D Hristov , Radiation Oncology, Stanford University School of Medicine, Palo Alto PET imaging. Methods: During the PET acquisitions, an optical camera tracked and recorded the motion of a tool placed on top of patients' torso. PET event data were utilized to detect and derive a motion

  10. Radiation-induced lung injury

    SciTech Connect (OSTI)

    Rosiello, R.A.; Merrill, W.W. (Yale Univ. Medical Center, New Haven, CT (USA))

    1990-03-01T23:59:59.000Z

    The use of radiation therapy is limited by the occurrence of the potentially fatal clinical syndromes of radiation pneumonitis and fibrosis. Radiation pneumonitis usually becomes clinically apparent from 2 to 6 months after completion of radiation therapy. It is characterized by fever, cough, dyspnea, and alveolar infiltrates on chest roentgenogram and may be difficult to differentiate from infection or recurrent malignancy. The pathogenesis is uncertain, but appears to involve both direct lung tissue toxicity and an inflammatory response. The syndrome may resolve spontaneously or may progress to respiratory failure. Corticosteroids may be effective therapy if started early in the course of the disease. The time course for the development of radiation fibrosis is later than that for radiation pneumonitis. It is usually present by 1 year following irradiation, but may not become clinically apparent until 2 years after radiation therapy. It is characterized by the insidious onset of dyspnea on exertion. It most often is mild, but can progress to chronic respiratory failure. There is no known successful treatment for this condition. 51 references.

  11. ARIZONA STATE UNIVERSITY STETSON UNIVERSITY Phoenix, AZ Deland, FL

    E-Print Network [OSTI]

    Wu, Shin-Tson

    English Literature English BOWLING GREEN STATE UNIVERSITY Bowling Green, OH SYRACUSE UNIVERSITY IndustrialARIZONA STATE UNIVERSITY STETSON UNIVERSITY Phoenix, AZ Deland, FL Interdisciplinary Studies Leadership FLORIDA STATE UNIVERSITY Instructional Systems Design Tallahassee, FL Interdisciplinary Studies

  12. Valproic Acid Use During Radiation Therapy for Glioblastoma Associated With Improved Survival

    SciTech Connect (OSTI)

    Barker, Christopher A., E-mail: barkerc@mskcc.org [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Bishop, Andrew J.; Chang, Maria; Beal, Kathryn; Chan, Timothy A. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)

    2013-07-01T23:59:59.000Z

    Purpose: Valproic acid (VA) is an antiepileptic drug (AED) and histone deacetylase (HDAC) inhibitor taken by patients with glioblastoma (GB) to manage seizures, and it can modulate the biologic effects of radiation therapy (RT). We investigated whether VA use during RT for GB was associated with overall survival (OS). Methods and Materials: Medical records of 544 adults with GB were retrospectively reviewed. Analyses were performed to determine the association of Radiation Therapy Oncology Group recursive partitioning analysis (RTOG RPA) class, seizure history, and concurrent temozolomide (TMZ) and AED use during RT with OS. Results: Seizures before the end of RT were noted in 217 (40%) patients, and 403 (74%) were taking an AED during RT; 29 (7%) were taking VA. Median OS in patients taking VA was 16.9 months (vs 13.6 months taking another AED, P=.16). Among patients taking an AED during RT, OS was associated with VA (P=.047; hazard ratio [HR], 0.67; 95% confidence interval [CI], 0.27-1.07), and RTOG RPA class (P<.0001; HR, 1.49; 95% CI, 1.37-1.61). Of the 5 most common AEDs, only VA was associated with OS. Median OS of patients receiving VA and TMZ during RT was 23.9 months (vs 15.2 months for patients taking another AED, P=.26). When the analysis was restricted to patients who received concurrent TMZ, VA use was marginally associated with OS (P=.057; HR, 0.54; 95% CI, ?0.09 to 1.17), independently of RTOG RPA class and seizure history. Conclusions: VA use during RT for GB was associated with improved OS, independently of RTOG RPA, seizure history, and concurrent TMZ use. Further studies of treatment that combines HDAC inhibitors and RT are warranted.

  13. 12.815 Atmospheric Radiation, Fall 2005

    E-Print Network [OSTI]

    Prinn, Ronald G.

    Introduction to the physics of atmospheric radiation and remote sensing including use of computer codes. Radiative transfer equation including emission and scattering, spectroscopy, Mie theory, and numerical solutions. ...

  14. 10 CFR 835- Occupational Radiation Protection

    Broader source: Energy.gov [DOE]

    The rules in this part establish radiation protection standards, limits, and program requirements for protecting individuals from ionizing radiation resulting from the conduct of DOE activities.

  15. Annual DOE Occupational Radiation Exposure | 1974 Report

    Broader source: Energy.gov [DOE]

    The Seventh Annual Report of Radiation Exposures for AEC & AEC Contractor Employees analyzes occupational radiation exposures at the Atomic Energy Commission (AEC) and its contractor employees during 1974.

  16. Standards for Protection Against Radiation (Michigan)

    Broader source: Energy.gov [DOE]

    This rule establishes standards for protection against radiation hazards. In addition to complying with requirements set forth, every reasonable effort should be made to maintain radiation levels...

  17. ORISE: REAC/TS Radiation Accident Registries

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Accident Registries The Radiation Emergency Assistance CenterTraining Site (REACTS) at the Oak Ridge Institute for Science and Education (ORISE) maintains a number of radiation...

  18. Radiation detection system

    DOE Patents [OSTI]

    Riedel, Richard A. (Knoxville, TN); Wintenberg, Alan L. (Knoxville, TN); Clonts, Lloyd G. (Knoxville, TN); Cooper, Ronald G. (Oak Ridge, TN)

    2012-02-14T23:59:59.000Z

    A preamplifier circuit for processing a signal provided by a radiation detector includes a transimpedance amplifier coupled to receive a current signal from a detector and generate a voltage signal at its output. A second amplification stage has an input coupled to an output of the transimpedance amplifier for providing an amplified voltage signal. Detector electronics include a preamplifier circuit having a first and second transimpedance amplifier coupled to receive a current signal from a first and second location on a detector, respectively, and generate a first and second voltage signal at respective outputs. A second amplification stage has an input coupled to an output of the transimpedance amplifiers for amplifying the first and said second voltage signals to provide first and second amplified voltage signals. A differential output stage is coupled to the second amplification stage for receiving the first and second amplified voltage signals and providing a pair of outputs from each of the first and second amplified voltage signals. Read out circuitry has an input coupled to receive both of the pair of outputs, the read out circuitry having structure for processing each of the pair of outputs, and providing a single digital output having a time-stamp therefrom.

  19. Renewing University Base Funding

    E-Print Network [OSTI]

    Renewing University Base Funding The Priority Issues 29 February 2012 e conor funding to universities as an immediate goal. It has already put in place increases worth 3.5%. 2 undergraduate or postgraduate, be funded at the same rate. #12;3 Charles Darwin University Flinders University

  20. Graduate Programs Auburn University

    E-Print Network [OSTI]

    Forestry Graduate Programs Auburn University Auburn University, Alabama 368495414 Programs://www.forestry.auburn.edu/graduate/ University of California, Berkeley Berkeley, California 947203114 Program: Forestry http://espm.berkeley.edu/gradprograms/grad_programs_mf.html Clemson University Clemson, South Carolina 29634 Program: Forest Resources http

  1. Residential Learning University Housing

    E-Print Network [OSTI]

    Rusu, Adrian

    Residential Learning & University Housing Handbook 2008 - 2009 A Guide for Residential Living on the Campus of Rowan University #12;Welcome to Residential Learning & University Housing! The primary purpose of the Office of Residential Life & University Housing is to assist and support students in the pursuit

  2. Columbia University Postdoctoral Officers

    E-Print Network [OSTI]

    Grishok, Alla

    Columbia University Postdoctoral Officers Handbook 2013 #12;Greetings! I am excited to welcome you to the Columbia University community of scholars and investigators. The Columbia University Office of Postdoctoral Director, Office of Postdoctoral Affairs Columbia University in the city of new york office of postdoctoral

  3. Columbia University Postdoctoral Officers

    E-Print Network [OSTI]

    Grishok, Alla

    Columbia University Postdoctoral Officers Handbook 2011 #12;Greetings! I am excited to welcome you to the Columbia University community of scholars and investigators. The Columbia University Office of Postdoctoral of Postdoctoral Affairs Columbia university in the City of new york offiCe of postdoCtoral affairs 840 Interchurch

  4. Clinical Outcome of Patients Treated With 3D Conformal Radiation Therapy (3D-CRT) for Prostate Cancer on RTOG 9406

    SciTech Connect (OSTI)

    Michalski, Jeff, E-mail: michalski@wustl.edu [Radiation Oncology, Washington University Medical School, St. Louis, Missouri (United States); Image-guided Therapy Center, St. Louis, Missouri (United States); Winter, Kathryn [Department of Statistics, Radiation Therapy Oncology Group, Philadelphia, Pennsylvania (United States); Roach, Mack [Radiation Oncology, University of California-San Francisco, San Francisco, California (United States); Markoe, Arnold [University of Miami, Miami, Florida (United States); Sandler, Howard M. [University of Michigan, Ann Arbor, Michigan (United States); Cedars-Sinai Medical Center, Los Angeles, California (United States); Ryu, Janice [Radiation Oncology, University of California-Davis, Davis, California (United States); Radiation Oncology Associates, Sacramento, California (United States); Parliament, Matthew [Radiation Oncology, University of Alberta, Edmonton, Alberta (Canada); Purdy, James A. [Radiation Oncology, University of California-Davis, Davis, California (United States); Image-guided Therapy Center, St. Louis, Missouri (United States); Valicenti, Richard K. [Radiation Oncology, University of California-Davis, Davis, California (United States); Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Cox, James D. [Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

    2012-07-01T23:59:59.000Z

    Purpose: Report of clinical cancer control outcomes on Radiation Therapy Oncology Group (RTOG) 9406, a three-dimensional conformal radiation therapy (3D-CRT) dose escalation trial for localized adenocarcinoma of the prostate. Methods and Materials: RTOG 9406 is a Phase I/II multi-institutional dose escalation study of 3D-CRT for men with localized prostate cancer. Patients were registered on five sequential dose levels: 68.4 Gy, 73.8 Gy, 79.2 Gy, 74 Gy, and 78 Gy with 1.8 Gy/day (levels I-III) or 2.0 Gy/day (levels IV and V). Neoadjuvant hormone therapy (NHT) from 2 to 6 months was allowed. Protocol-specific, American Society for Therapeutic Radiation Oncology (ASTRO), and Phoenix biochemical failure definitions are reported. Results: Thirty-four institutions enrolled 1,084 patients and 1,051 patients are analyzable. Median follow-up for levels I, II, III, IV, and V was 11.7, 10.4, 11.8, 10.4, and 9.2 years, respectively. Thirty-six percent of patients received NHT. The 5-year overall survival was 90%, 87%, 88%, 89%, and 88% for dose levels I-V, respectively. The 5-year clinical disease-free survival (excluding protocol prostate-specific antigen definition) for levels I-V is 84%, 78%, 81%, 82%, and 82%, respectively. By ASTRO definition, the 5-year disease-free survivals were 57%, 59%, 52%, 64% and 75% (low risk); 46%, 52%, 54%, 56%, and 63% (intermediate risk); and 50%, 34%, 46%, 34%, and 61% (high risk) for levels I-V, respectively. By the Phoenix definition, the 5-year disease-free survivals were 68%, 73%, 67%, 84%, and 80% (low risk); 70%, 62%, 70%, 74%, and 69% (intermediate risk); and 42%, 62%, 68%, 54%, and 67% (high risk) for levels I-V, respectively. Conclusion: Dose-escalated 3D-CRT yields favorable outcomes for localized prostate cancer. This multi-institutional experience allows comparison to other experiences with modern radiation therapy.

  5. Actively driven thermal radiation shield

    DOE Patents [OSTI]

    Madden, Norman W. (Livermore, CA); Cork, Christopher P. (Pleasant Hill, CA); Becker, John A. (Alameda, CA); Knapp, David A. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    A thermal radiation shield for cooled portable gamma-ray spectrometers. The thermal radiation shield is located intermediate the vacuum enclosure and detector enclosure, is actively driven, and is useful in reducing the heat load to mechanical cooler and additionally extends the lifetime of the mechanical cooler. The thermal shield is electrically-powered and is particularly useful for portable solid-state gamma-ray detectors or spectrometers that dramatically reduces the cooling power requirements. For example, the operating shield at 260K (40K below room temperature) will decrease the thermal radiation load to the detector by 50%, which makes possible portable battery operation for a mechanically cooled Ge spectrometer.

  6. Sommerfeld radiation condition at threshold

    E-Print Network [OSTI]

    Erik Skibsted

    2011-06-23T23:59:59.000Z

    We prove Besov space bounds of the resolvent at low energies in any dimension for a class of potentials that are negative and obey a virial condition with these conditions imposed at infinity only. We do not require spherical symmetry. The class of potentials includes in dimension $\\geq3$ the attractive Coulomb potential. There are two boundary values of the resolvent at zero energy which we characterize by radiation conditions. These radiation conditions are zero energy versions of the well-known Sommerfeld radiation condition.

  7. CRUISE PLAN R/V OCEANUS Oregon State University

    E-Print Network [OSTI]

    Kurapov, Alexander

    APPENDIX 2 CRUISE PLAN R/V OCEANUS Oregon State University College of Earth, Ocean & Atmospheric positions and route waypoints.) WILL RADIOACTIVE METHODS BE USED? YES NO If so, list OSU radiation use/Charting Ocean Engineering Training Transit/Non-science Pollution Assessment Other Additional Cruise Info

  8. UNIVERSITY of CALIFORNIA SEARCH FOR HIGHENERGY EMISSION FROM GAMMARAY

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    UNIVERSITY of CALIFORNIA SANTA CRUZ SEARCH FOR HIGH≠ENERGY EMISSION FROM GAMMA≠RAY BURSTS Gamma≠Ray Bursts With A Large Water Cerenkov Detector by Tom Yang Milagrisimo, the first≠stage prototype for radiation from the directions of gamma≠ray bursts that are listed in BATSE's 4B catalog. No evidence

  9. NORTHERN KENTUCKY UNIVERSITY UNDERGRADUATE CATALOG

    E-Print Network [OSTI]

    Boyce, Richard L.

    NORTHERN KENTUCKY UNIVERSITY UNDERGRADUATE CATALOG 2012-2013 #12;2 NORTHERN KENTUCKY UNIVERSITY of publica- tion. However, Northern Kentucky University reserves the right to change regulations, policies, or the Kentucky Council on Postsecondary Education. University Accreditation Northern Kentucky University

  10. BOARD OF DIRECTORS UNIVERSITY OF CONNECTICUT HEALTH CENTER

    E-Print Network [OSTI]

    Oliver, Douglas L.

    AND APPROVAL OF A SERVICE CONTRACT RENEWAL WITH ELEKTA ONCOLOGY SYSTEMS, INC. ON BEHALF OF JOHN DEMPSEY made and seconded, the Board approved a service contract renewal, on behalf of John Dempsey Hospital

  11. Survivable pulse power space radiator

    DOE Patents [OSTI]

    Mims, J.; Buden, D.; Williams, K.

    1988-03-11T23:59:59.000Z

    A thermal radiator system is described for use on an outer space vehicle, which must survive a long period of nonuse and then radiate large amounts of heat for a limited period of time. The radiator includes groups of radiator panels that are pivotally connected in tandem, so that they can be moved to deployed configuration wherein the panels lie largely coplanar, and to a stowed configuration wherein the panels lie in a stack to resist micrometerorite damage. The panels are mounted on a boom which separates a hot power source from a payload. While the panels are stowed, warm fluid passes through their arteries to keep them warm enough to maintain the coolant in a liquid state and avoid embrittlement of material. The panels can be stored in a largely cylindrical shell, with panels progressively further from the boom being of progressively shorter length. 5 figs.

  12. Georgia Radiation Control Act (Georgia)

    Broader source: Energy.gov [DOE]

    The Georgia Radiation Control Act is designed to prevent any associated harmful effects upon the environment or the health and safety of the public through the institution and maintenance of a...

  13. Ionizing Radiation Injury (South Carolina)

    Broader source: Energy.gov [DOE]

    This legislation applies to employers that have more than one employee who engages in activities which involve the presence of ionizing radiation. Employers with less than three employees can...

  14. Texas Radiation Control Act (Texas)

    Broader source: Energy.gov [DOE]

    It is the policy of the state to institute and maintain a regulatory program for radiation sources that is compatible with federal standards and regulatory programs, and, to the degree possible,...

  15. Radiation-Associated Liver Injury

    SciTech Connect (OSTI)

    Pan, Charlie C., E-mail: cpan@umich.ed [Department of Radiation Oncology, University of Michigan Medical School, Ann Arbor, MI (United States); Kavanagh, Brian D. [Department of Radiation Oncology, University of Colorado, Aurora, CO (United States); Dawson, Laura A. [Princess Margaret Hospital, University of Toronto, Toronto, Ontario (Canada); Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Das, Shiva K. [Department of Radiation Oncology, Duke University Medical Center, Durham, NC (United States); Miften, Moyed [Department of Radiation Oncology, University of Colorado, Aurora, CO (United States); Ten Haken, Randall K. [Department of Radiation Oncology, University of Michigan Medical School, Ann Arbor, MI (United States)

    2010-03-01T23:59:59.000Z

    The liver is a critically important organ that has numerous functions including the production of bile, metabolism of ingested nutrients, elimination of many waste products, glycogen storage, and plasma protein synthesis. The liver is often incidentally irradiated during radiation therapy (RT) for tumors in the upper- abdomen, right lower lung, distal esophagus, or during whole abdomen or whole body RT. This article describes the endpoints, time-course, and dose-volume effect of radiation on the liver.

  16. Solar Radiation and Asteroidal Motion

    E-Print Network [OSTI]

    Jozef Klacka

    2000-09-07T23:59:59.000Z

    Effects of solar wind and solar electromagnetic radiation on motion of asteroids are discussed. The results complete the statements presented in Vokrouhlick\\'{y} and Milani (2000). As for the effect of electromagnetic radiation, the complete equation of motion is presented to the first order in $v/c$ -- the shape of asteroid (spherical body is explicitly presented) and surface distribution of albedo should be taken into account. Optical quantities must be calculated in proper frame of reference.

  17. The Effect of Radiation Timing on Patients With High-Risk Features of Parameningeal Rhabdomyosarcoma: An Analysis of IRS-IV and D9803

    SciTech Connect (OSTI)

    Spalding, Aaron C., E-mail: Aaron.Spalding@nortonhealthcare.org [Kosair Children's Hospital and Brain Tumor Center, Louisville, Kentucky (United States); Hawkins, Douglas S. [Division of Hematology/Oncology, Seattle Children's Hospital, and Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington (United States); Donaldson, Sarah S. [Department of Radiation Oncology, Stanford University Medical Center, Stanford, California (United States); Anderson, James R.; Lyden, Elizabeth [University of Nebraska Medical Center, Omaha, Nebraska (United States); Laurie, Fran [Quality Assurance Review Center, Providence, Rhode Island and Seattle, Washington (United States); Wolden, Suzanne L. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Arndt, Carola A.S. [Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota (United States); Michalski, Jeff M. [Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri (United States)

    2013-11-01T23:59:59.000Z

    Purpose: Radiation therapy remains an essential treatment for patients with parameningeal rhabdomyosarcoma (PMRMS), and early radiation therapy may improve local control for patients with intracranial extension (ICE). Methods and Materials: To address the role of radiation therapy timing in PMRMS in the current era, we reviewed the outcome from 2 recent clinical trials for intermediate-risk RMS: Intergroup Rhabdomyosarcoma Study (IRS)-IV and Children's Oncology Group (COG) D9803. The PMRMS patients on IRS-IV with any high-risk features (cranial nerve palsy [CNP], cranial base bony erosion [CBBE], or ICE) were treated immediately at day 0, and PMRMS patients without any of these 3 features received week 6-9 radiation therapy. The D9803 PMRMS patients with ICE received day 0 X-Ray Therapy (XRT) as well; however, those with either CNP or CBBE had XRT at week 12. Results: Compared with the 198 PMRMS patients from IRS-IV, the 192 PMRMS patients from D9803 had no difference (P<.05) in 5-year local failure (19% vs 19%), failure-free-survival (70% vs 67%), or overall survival (75% vs 73%) in aggregate. The 5-year local failure rates by subset did not differ when patients were classified as having no risk features (None, 15% vs 19%, P=.25), cranial nerve palsy/cranial base of skull erosion (CNP/CBBE, 15% vs 28%, P=.22), or intracranial extension (ICE, 21% vs 15%, P=.27). The D9083 patients were more likely to have received initial staging by magnetic resonance imaging (71% vs 53%). Conclusions: These data support that a delay in radiation therapy for high-risk PMRMS features of CNP/CBBE does not compromise clinical outcomes.

  18. Evaluating Radiative Closure in the Middle-to-Upper Troposhere

    SciTech Connect (OSTI)

    Tobin, David C; Turner, David D; Knuteson, Robert O

    2013-01-02T23:59:59.000Z

    This project had two general objectives. The first is the characterization and improvement of the radiative transfer parameterization in strongly absorbing water vapor bands, as these strongly absorbing bands dictate the clear sky radiative heating rate. The second is the characterization and improvement of the radiative transfer in cirrus clouds, with emphasis on ensuring that the parameterization of the radiative transfer is consistent and accurate across the spectrum. Both of these objectives are important for understanding the radiative processes in the mid-to-upper troposphere. The research on this project primarily involved analysis of data from the First and Second Radiative Heating in Underexplored Bands Campaigns, RHUBC-I and II. This included a climate model sensitivity study using results from RHUBC-I. The RHUBC experiments are ARM-funded activities that directly address the objectives of this research project. A secondary effort was also conducted that investigated the trends in the long-term (~14 year) dataset collected by the Atmospheric Emitted Radiance Interferometer (AERI) at the ARM Southern Great Plains site. This work, which was primarily done by a post-doc at the University of Wisconsin √?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬? Madison under Dr. Turner√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?s direction, uses the only NIST-traceable instrument at the ARM site that has a well-documented calibration and uncertainty performance to investigate long-term trends in the downwelling longwave radiance above this site.

  19. Radiative Leptonic B Decays

    SciTech Connect (OSTI)

    Chen, Edward Tann; /Caltech; ,

    2008-10-06T23:59:59.000Z

    We present the results of a search for B{sup +} meson decays into {gamma}{ell}{sup +}{nu}{sub {ell}}, where {ell} = e,{mu}. We use a sample of 232 million B{bar B} meson pairs recorded at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II B factory. We measure a partial branching fraction {Delta}{beta} in a restricted region of phase space that reduces the effect of theoretical uncertainties, requiring the lepton energy to be in the range 1.875 and 2.850 GeV, the photon energy to be in the range 0.45 and 2.35 GeV, and the cosine of the angle between the lepton and photon momenta to be less than -0.36, with all quantities computed in the {Upsilon}(4S) center-of-mass frame. We find {Delta}{Beta}(B{sup +} {yields} {gamma}{ell}{sup +}{nu}{sub {ell}}) = (-0.3{sub 1.5}{sup +1.3}(statistical){sub -0.6}{sup +0.6}(systematic) {+-} 0.1(theoretical)) x 10{sup -6}, under the assumption of lepton universality. Interpreted as a 90% confidence-level Bayesian upper limit, the result corresponds to 1.7 x 10{sup -6} for a prior at in amplitude, and 2.3 x 10{sup -6} for a prior at in branching fraction.

  20. Radiator Labs | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Nitrogen Group Stanford University The Stanford Nitrogen Group developed a new wastewater treatment process, termed "CANDO", for the removal and recovery of energy from waste...

  1. Generation of continuous and pulsed diagnostic imaging x-ray radiation using a carbon-nanotube-based field-emission cathode

    E-Print Network [OSTI]

    -ray radiation can be generated using a carbon nanotube CNT -based field-emission cathode. The device can readilyGeneration of continuous and pulsed diagnostic imaging x-ray radiation using a carbon-nanotube-based field-emission cathode G. Z. Yue Department of Physics, University of North Carolina, Chapel Hill, North

  2. Radiation Exposure Monitoring Systems Data Reporting Guide

    Broader source: Energy.gov [DOE]

    Instructions for preparing occupational exposure data for submittal to the Radiation Exposure Monitoring System (REMS) repository.

  3. Liquid cooled fiber thermal radiation receiver

    DOE Patents [OSTI]

    Butler, B.L.

    1985-03-29T23:59:59.000Z

    A radiation-to-thermal receiver apparatus for collecting radiation and converting it to thermal energy is disclosed. The invention includes a fibrous mat material which captures radiation striking the receiver. Captured radiation is removed from the fibrous mat material by a transparent fluid within which the material is bathed.

  4. Solar Radiation and Meteorological Data Support

    E-Print Network [OSTI]

    Homes, Christopher C.

    Solar Radiation and Meteorological Data Support for the Long Island Solar Farm and NSERCand NSERC-9 2011March 8 9, 2011 #12;LISF Solar Radiation and Meteorological Sensor Network ·· Technology Needs on intermittent source of solar radiationintermittent source of solar radiation #12;LISF Solar Radiation

  5. International Conference Synchrotron Radiation Instrumentation SRI `94

    SciTech Connect (OSTI)

    Not Available

    1994-10-01T23:59:59.000Z

    This report contains abstracts for the international conference on Synchrotron Radiation Instrumentation at Brookhaven National Laboratory.

  6. The Radiative Kicked Oscillator: A Stochastic Web or Chaotic Attractor ?

    E-Print Network [OSTI]

    Y. Ashkenazy; L. P. Horwitz

    1999-05-11T23:59:59.000Z

    A relativistic charged particle moving in a uniform magnetic field and kicked by an electric field is considered. Under the assumption of small magnetic field, an iterative map is developed. We consider both the case in which no radiation is assumed and the radiative case, using the Lorentz-Dirac equation to describe the motion. Comparison between the non-radiative case and the radiative case shows that in both cases one can observe a stochastic web structure for weak magnetic fields, and, although there are global differences in the result of the map, that both cases are qualitatively similar in their small scale behavior. We also develop an iterative map for strong magnetic fields. In that case the web structure no longer exists; it is replaced by a rich chaotic behavior. It is shown that the particle does not diffuse to infinite energy; it is limited by the boundaries of an attractor (the boundaries are generally much smaller than light velocity). Bifurcation occurs, converging rapidly to Feigenbaum's universal constant. The chaotic behavior appears to be robust. For intermediate magnetic fields, it is more difficult to observe the web structure, and the influence of the unstable fixed point is weaker.

  7. Tuesday, 31 July, 2012 Rapid radiation belt losses occurring during high speed solar wind stream1

    E-Print Network [OSTI]

    Otago, University of

    Tuesday, 31 July, 2012 1 Rapid radiation belt losses occurring during high speed solar wind stream1 Raita11 Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland12 Abstract. Recent geomagnetic disturbances triggered by the arrival of a Solar14 Wind Stream Interface (SWSI). In the current

  8. CHIPLESS PASSIVE SENSOR FOR WIRELESS MONITORING OF HIGH RADIATION DOSES IN NUCLEAR INFRASTRUCTURES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CHIPLESS PASSIVE SENSOR FOR WIRELESS MONITORING OF HIGH RADIATION DOSES IN NUCLEAR INFRASTRUCTURES for Nuclear Research, Otwock, Poland 4 Wroclaw University of Technology, Wroclaw, Poland 5 TRAD, BP 47471, Labège, France ppons@laas.fr ABSTRACT The dosimetry is one of the crucial techniques that are needed

  9. Energetic outer radiation-belt electron precipitation during recurrent solar activity

    E-Print Network [OSTI]

    Otago, University of

    on the atmosphere [Seppälä et al., 2004]. During some intense solar storms solar protons in the energy range 1Energetic outer radiation-belt electron precipitation during recurrent solar activity Mark A and Physical Sciences, University of Newcastle, Callaghan, Australia. Russell S. Grew School of Mathematical

  10. Quantifying the response of phytoplankton photosynthesis to ultraviolet radiation: Biological weighting functions

    E-Print Network [OSTI]

    , University of Z√ľrich, Zollikerstr. 107, 8008 Z√ľrich, Switzerland Key words: Lake Lucerne, Lake Cadagno radiation (UV) was assessed for phytoplankton assemblages in two Swiss lakes, pre-alpine Lake Lucerne compared to incubation of the same sample in L. Lucerne, consistent with increased UV sensitivity due

  11. BED-Vol. 53, 2002 Advances in Bioengineering RADIATIVE PROPERTIES OF POLAR BEAR HAIR

    E-Print Network [OSTI]

    ), Ralph Greif (1) (1) Department of Mechanical Engineering University of California at Berkeley Berkeley-factual stories on the radiative properties of the bear's fur which permeate the popular literature, television at approximately the hair centerline, and a point scan (average of 32 scans taken by the computerized system

  12. Radiation effects on the surfaces of the Galilean satellites R. E. Johnson

    E-Print Network [OSTI]

    Johnson, Robert E.

    20 Radiation effects on the surfaces of the Galilean satellites R. E. Johnson University and Johnson 1996). It can produce new species in the surface, it can produce and eject volatiles into the atmosphere, and it can be a source of the local plasma (Figure 20.1 and Johnson 1990, 1996, 1998

  13. Radiative acceleration and transient, radiation-induced electric fields

    E-Print Network [OSTI]

    L. Zampieri; R. Turolla; L. Foschini; A. Treves

    2003-04-14T23:59:59.000Z

    The radiative acceleration of particles and the electrostatic potential fields that arise in low density plasmas hit by radiation produced by a transient, compact source are investigated. We calculate the dynamical evolution and asymptotic energy of the charged particles accelerated by the photons and the radiation-induced electric double layer in the full relativistic, Klein-Nishina regime. For fluxes in excess of $10^{27}$ ${\\rm erg} {\\rm cm}^{-2} {\\rm s}^{-1}$, the radiative force on a diluted plasma ($n\\la 10^{11}$ cm$^{-3}$) is so strong that electrons are accelerated rapidly to relativistic speeds while ions lag behind owing to their larger inertia. The ions are later effectively accelerated by the strong radiation-induced double layer electric field up to Lorentz factors $\\approx 100$, attainable in the case of negligible Compton drag. The asymptotic energies achieved by both ions and electrons are larger by a factor 2--4 with respect to what one could naively expect assuming that the electron-ion assembly is a rigidly coupled system. The regime we investigate may be relevant within the framework of giant flares from soft gamma-repeaters.

  14. BIOLOGY & MEDICINE DIVISION ANNUAL REPORT 1978-1979

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    on research needs in actinide biology (CONF-770491, Seattle,J. Radiation Oncology Biology Physics 3: Lindgren, Frank T.Radiation Oncology Biology, Physics 3: 81-85 Magee, J.L and

  15. University of Nebraska-Lincoln and University of Florida (Building...

    Open Energy Info (EERE)

    Nebraska-Lincoln and University of Florida (Building Energy Efficient Homes for America) Jump to: navigation, search Name: University of Nebraska-Lincoln and University of Florida...

  16. , UNIVERSITY Brigham Young University Geology Studies

    E-Print Network [OSTI]

    Seamons, Kent E.

    , UNIVERSITY #12;Brigham Young University Geology Studies Volume 1 5 - 1968 Part 2 Studies for Students No. 1 Guide to the Geology of the Wasatch Mountain Front, Between Provo Canyon and Y Mountain, Northeast of Provo, Utah by J. Keith Rigby and Lehi F. Hintze #12;A publication of the Department of Geology

  17. Colorado State University Colorado State University

    E-Print Network [OSTI]

    Stephens, Graeme L.

    Colorado State University _______________ 1.1 Page 1 Colorado State University In 1870, the Territorial Council and House of Representatives of the Territory of Colorado created the Colorado that same year as Colorado's land-grant college under the Morrill Act of 1862. The Morrill Act provided

  18. Colorado State University Colorado State University

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    Colorado State University Colorado State University In 1870, the Territorial Council and House of Representatives of the Territory of Colorado created the Colorado Agricultural College. When the Territory became. The College admitted its first students in 1879 and received designation that same year as Colorado's land

  19. University Housing University of South Carolina

    E-Print Network [OSTI]

    Almor, Amit

    at the University of South Carolina. It is designed to be a sustainable living and learning environment and employs a more sustainable campus and society. These programming efforts are a collaboration among University Housing, Sustainable Carolina and other campus partners. Community Features · Attending events

  20. Scale-invariance as the origin of dark radiation?

    E-Print Network [OSTI]

    Dmitry Gorbunov; Anna Tokareva

    2014-11-11T23:59:59.000Z

    Recent cosmological data favour R^2-inflation and some amount of non-standard dark radiation in the Universe. We show that a framework of high energy scale invariance can explain these data. The spontaneous breaking of this symmetry provides gravity with the Planck mass and particle physics with the electroweak scale. We found that the corresponding massless Nambu--Goldstone bosons -- dilatons -- are produced at reheating by the inflaton decay right at the amount needed to explain primordial abundances of light chemical elements and anisotropy of the cosmic microwave background. Then we extended the discussion on the interplay with Higgs-inflation and on general class of inflationary models where dilatons are allowed and may form the dark radiation. As a result we put a lower limit on the reheating temperature in a general scale invariant model of inflation.

  1. RESMDD'02 Radiation in Life Sciences: Hartmut F.-W. Sadrozinski , SCIPP Radiation Effects in

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    RESMDD'02 Radiation in Life Sciences: Hartmut F.-W. Sadrozinski , SCIPP SCIPPSCIPP Radiation Effects in Life Sciences oocyte eggs in uterus spermatheca gonad vulva Quality of Radiation Biological Radiation in Life Sciences: Hartmut F.-W. Sadrozinski , SCIPP SCIPPSCIPP Radiation in Life Sciences Why

  2. Radiation Safety Refresher Training 2012 Page 1 of 8 Radiation Safety Retraining

    E-Print Network [OSTI]

    Kaye, Jason P.

    Radiation Safety Refresher Training 2012 Page 1 of 8 Radiation Safety Retraining Spring 2012 Contents: Thank You Responsibilities for Radiation Safety Biological Effects and Exposure Limits Training for Non-Radiation Workers Training for Radiation Workers What Everyone in Your Lab Should Know Security

  3. Radiation Safety Refresher Training 2013 Page 1 of 7 Radiation Safety Retraining

    E-Print Network [OSTI]

    Kaye, Jason P.

    Radiation Safety Refresher Training 2013 Page 1 of 7 Radiation Safety Retraining Spring 2013 Contents: Thank You Responsibilities for Radiation Safety Biological Effects and Exposure Limits Training for Non-Radiation Workers Training for Radiation Workers What Everyone in Your Lab Should Know Security

  4. University Services Pamela Wheelock

    E-Print Network [OSTI]

    Amin, S. Massoud

    and Engineering Jerome Malmquist open position Business Services * Bruce Gritters September 2013 Public SafetyUniversity Services Pamela Wheelock Vice President MANAGEMENT SYSTEMS University Services Human Resources Linda Bjornberg Director open position CIO OPERATIONS Auxiliary Services Laurie Scheich

  5. Mathematics Department Millersville University

    E-Print Network [OSTI]

    Hardy, Christopher R.

    1 Mathematics Department Millersville University Master of Education in Mathematics (M.Ed.) #12;2 MASTER OF EDUCATION DEGREE IN MATHEMATICS Contents 1. Introduction ......................................................................................................2 a. Millersville University b. The Mathematics Department c. The Field of Mathematics Education Two

  6. Environmental State University

    E-Print Network [OSTI]

    Biology Water Science Nursery Management Plant Breeding Biofuel Feedstocks OUR DEPARTMENT The PLANT specialties, including plant breeding, genetic engineering, sustainable agriculture, ornamental production State University is the only land-grant, Hispanic serving university in the contiguous United States

  7. Surface Power Radiative Cooling Tests

    SciTech Connect (OSTI)

    Vaughn, Jason; Schneider, Todd [Environmental Effects Branch, EM50, NASA Marshall Space Flight Center, AL 35812 (United States)

    2006-01-20T23:59:59.000Z

    Terrestrial nuclear power plants typically maintain their temperature through convective cooling, such as water and forced air. However, the space environment is a vacuum environment, typically 10-8 Torr pressure, therefore in proposed missions to the lunar surface, power plants would have to rely on radiative cooling to remove waste heat. Also, the Martian surface has a very tenuous atmosphere (e.g. {approx}5 Torr CO2), therefore, the main heat transfer method on the Martian surface is also radiative. Because of the lack of atmosphere on the Moon and the tenuous atmosphere on Mars, surface power systems on both the Lunar and Martian surface must rely heavily on radiative heat transfer. Because of the large temperature swings on both the lunar and the Martian surfaces, trying to radiate heat is inefficient. In order to increase power system efficiency, an effort is underway to test various combinations of materials with high emissivities to demonstrate their ability to survive these degrading atmospheres to maintain a constant radiator temperature improving surface power plant efficiency. An important part of this effort is the development of a unique capability that would allow the determination of a materials emissivity at high temperatures. A description of the test capability as well as initial data is presented.

  8. University Research Summaries

    Broader source: Energy.gov [DOE]

    The Idaho National Laboratory published the U.S. Department of Energy's (DOE) Geothermal Technologies Office 2001 University Research Summaries.†

  9. Mathematical Statistics Stockholm University

    E-Print Network [OSTI]

    Britton, Tom

    , University of Dar es Salaam, Postal address: Box 35062, Dar es Salaam, Tanzania. E-mail: shabanmbare

  10. MICHIGAN STATE UNIVERSITY INTRODUCTIONi.

    E-Print Network [OSTI]

    #12;2 MICHIGAN STATE UNIVERSITY INTRODUCTIONi. Welcome to the Online Professional Master of Science), and the College of Veterinary Medicine (CVM) at Michigan State University (MSU). This booklet contains important, Program Director Online Master of Science in Food Safety Michigan State University 1129 Farm Lane, Rm B 51

  11. University Buildings Landmark Buildings

    E-Print Network [OSTI]

    M√ľller, Jens-Dominik

    KEY University Buildings Landmark Buildings The Lanyon Building Roads Footpath Cafe University Accommodation Queen's University Belfast Campus Map The Lanyon Building The Students' Union The David Keir Building School Offices A Biological Sciences B Chemistry and Chemical Engineering C Education D

  12. Universal Prediction Neri Merhav

    E-Print Network [OSTI]

    Merhav, Neri

    Universal Prediction Neri Merhav y Meir Feder z July 23, 1998 Abstract This paper consists of an overview on universal prediction from an information-theoretic perspective. Special attention is given of the universal prediction problem are described with emphasis on the analogy and the di erences between results

  13. BRANDEIS UNIVERSITY FACULTY SENATE

    E-Print Network [OSTI]

    Fraden, Seth

    Brandeis's story to the public. When questioned about the University's brand and identity, Ms. Miles answered that the logo is the University's brand identity. Brandeis is a research university with a long to the marketing of his image. Ms. Miles said that Brandeis had a real connection with Albert Einstein. She added

  14. Guillaume Bal Columbia University

    E-Print Network [OSTI]

    Bal, Guillaume

    Guillaume Bal Columbia University 500 W. 120th St, New York, NY 10027, U.S.A. (212) 854 4731 - 1993 Professional Experience · Professor, Columbia University, 2008-present. · Associate Professor, Columbia University, 2003-2008. · Visiting scholar, Institute for Pure and Applied Mathematics, UCLA campus

  15. Observation of the radiative decay D*+-> D+gamma

    E-Print Network [OSTI]

    Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L.

    1998-05-01T23:59:59.000Z

    , Livermore, CA 94551. ? Permanent address: BINP, RU-630090 Novosibirsk, Russia. 107 Permanent address: Yonsei University, Seoul 120-749, Korea. [1] See, for example, A.N. Kamal and Q.P. Xu, Phys. Lett. B 284, 421 (1992); P.J. O?Donnell and Q.P. Xu, Phys. Lett...VOLUME 80, NUMBER 18 PHYSICAL REVIEW LETTERS 4MAY 1998 Observation of the Radiative Decay D p1 !D 1 g J. Bartelt, 1 S.E. Csorna, 1 V. Jain, 1, * K.W. McLean, 1 S. Marka, 1 R. Godang, 2 K. Kinoshita, 2 I.C. Lai, 2 P. Pomianowski, 2 S. Schrenk, 21 G...

  16. Gravitational radiation from long gamma-ray bursts

    E-Print Network [OSTI]

    Maurice H. P. M. van Putten

    2001-02-11T23:59:59.000Z

    Long gamma-ray bursts (GRBs) are probably powered by high-angular momentum black hole-torus systems in suspended accretion. The torus will radiate gravitational waves as non-axisymmetric instabilities develop. The luminosity in gravitational-wave emissions is expected to compare favorably with the observed isotropic equivalent luminosity in GRB-afterglow emissions. This predicts that long GRBs are potentially the most powerful LIGO/VIRGO burst-sources in the Universe. Their frequency-dynamics is characterized by a horizontal branch in the $\\dot{f}(f)-$diagram.

  17. Michigan State University Alumni Association MICHIGAN STATE UNIVERSITY

    E-Print Network [OSTI]

    Michigan State University Alumni Association Bylaws #12;2 MICHIGAN STATE UNIVERSITY ALUMNI of the organization shall be the Michigan State University Alumni Association (hereinafter, the "Association"). Section 2 Mission Statement The Michigan State University Alumni Association supports and enhances

  18. Blackbody radiation in ?-Minkowski spacetime

    E-Print Network [OSTI]

    Hyeong-Chan Kim; Chaiho Rim; Jae Hyung Yee

    2007-09-19T23:59:59.000Z

    We have computed the black body radiation spectra in $\\kappa-$Minkowski space-time, using the quantum mechanical picture of massless scalar particles as well as effective quantum field theory picture. The black body radiation depends on how the field theory (and thus how the $\\kappa-$Poincar\\'e algebra) handles the ordering effect of the noncommutative space-time. In addition, there exists a natural momentum cut-off of the order $\\kappa$, beyond which a new real mode takes its shape from a complex mode and the old real mode flows out to be a new complex mode. However, the new high momentum real mode should not be physical since its contributions to the black-body radiation spoils the commutative limit.

  19. Ultraviolet-radiation-curable paints

    SciTech Connect (OSTI)

    Grosset, A M; Su, W F.A.; Vanderglas, E

    1981-09-30T23:59:59.000Z

    In product finishing lines, ultraviolet radiation curing of paints on prefabricated structures could be more energy efficient than curing by natural gas fired ovens, and could eliminate solvent emission. Diffuse ultraviolet light can cure paints on three dimensional metal parts. In the uv curing process, the spectral output of radiation sources must complement the absorption spectra of pigments and photoactive agents. Photosensitive compounds, such as thioxanthones, can photoinitiate unsaturated resins, such as acrylated polyurethanes, by a free radical mechanism. Newly developed cationic photoinitiators, such as sulfonium or iodonium salts (the so-called onium salts) of complex metal halide anions, can be used in polymerization of epoxy paints by ultraviolet light radiation. One-coat enamels, topcoats, and primers have been developed which can be photoinitiated to produce hard, adherent films. This process has been tested in a laboratory scale unit by spray coating these materials on three-dimensional objects and passing them through a tunnel containing uv lamps.

  20. Contrasting the direct radiative effect and direct radiative forcing of aerosols

    E-Print Network [OSTI]

    Heald, Colette L.

    The direct radiative effect (DRE) of aerosols, which is the instantaneous radiative impact of all atmospheric particles on the Earth's energy balance, is sometimes confused with the direct radiative forcing (DRF), which ...

  1. THE EFFECT OF CIRCUMSOLAR RADIATION ON THE ACCURACY OF PYRHELIOMETER MEASUREMENTS OF THE DIRECT SOLAR RADIATION

    E-Print Network [OSTI]

    Grether, D.

    2012-01-01T23:59:59.000Z

    r Presented at the Solar Radiation workshop of Solar Rising,MEASUREMENTS OF THE DIRECT SOLAR RADIATION D. Grether, D.Diffuse, and Total Solar Radiation," Solar Energy, vol. 4,

  2. 1993 Radiation Protection Workshop: Proceedings

    SciTech Connect (OSTI)

    Not Available

    1993-12-31T23:59:59.000Z

    The 1993 DOE Radiation Protection Workshop was conducted from April 13 through 15, 1993 in Las Vegas, Nevada. Over 400 Department of Energy Headquarters and Field personnel and contractors from the DOE radiological protection community attended the Workshop. Forty-nine papers were presented in eleven separate sessions: Radiological Control Manual Implementation, New Approaches to Instrumentation and Calibration, Radiological Training Programs and Initiatives, External Dosimetry, Internal Dosimetry, Radiation Exposure Reporting and Recordkeeping, Air Sampling and Monitoring Issues, Decontamination and Decommissioning of Sites, Contamination Monitoring and Control, ALARA/Radiological Engineering, and Current and Future Health Physics Research. Individual papers are indexed separately on the database.

  3. The NCI Radiation Research Program: Grant portfolio and radiation

    E-Print Network [OSTI]

    models (89 animals no human subject material, 21 use both) ­ 109 utilize rodent models ­ 2 have canine and R37s). Of those that utilize radiation: · 6 use tissue culture models only · 110 utilize animal subjects · 39 use human subjects or human subject materials only. #12;Dose and Dosimetry · The majority

  4. Measurement of Radiation Damage on Silica Aerogel Cerenkov Radiator

    E-Print Network [OSTI]

    Belle Preprint; Sahu Wang; M. Z. Wang; R. Suda; R. Enomoto; K. C. Peng; C. H. Wang; I. Adachi; M. Amami

    We measured the radiation damage on silica aerogel Cerenkov radiators originally developed for the B-factory experiment at KEK. Refractive index of the aerogel samples ranged from 1.012 to 1.028. The samples were irradiated up to 9.8 MRad of equivalent dose. Measurements of transmittance and refractive index were carried out and these samples were found to be radiation hard. Deteriorations in transparency and changes of refractive index were observed to be less than 1.3% and 0.001 at 90% confidence level, respectively. Prospects of using aerogels under high-radiation environment are discussed. 1 Introduction Silica aerogels(aerogels) are a colloidal form of glass, in which globules of silica are connected in three dimensional networks with siloxan bonds. They are solid, very light, transparent and their refractive index can be controlled in the production process. Many high energy and nuclear physics experiments have used aerogels instead of pressurized gas for their Cerenkov coun...

  5. $f(R)$-Cosmolgy from Early Universe Upto Future Cosmic Collapse and its Avoidance

    E-Print Network [OSTI]

    S. K. Srivastava

    2008-09-11T23:59:59.000Z

    In the present model, a unified picture of cosmology from early inflation to late acceleration is obtained from $ f(R)-$ gravity with non-linear terms $ R^2 $ and $ R^5 $ of scalar curvature $R$. It is discussed that elementary particles and radiation are produced during early inflation. The emitted radiation thermalizes the universe to a very high temperature $ \\sim 10^{18}{\\rm GeV}$. The exit of the universe from inflationary phase is followed by deceleration due to radiation-dominance heralding the standard cosmology with background radiation having the initial temperature $ \\sim 10^{18}{\\rm GeV}$. It is found that dark matter is induced by curvature and baryonic matter is produced during inflation. Radiation-dominated phase is followed by deceleration due to matter-dominance. The curvature-induced phantom dark energy dominates at the red-shift $ z = 0.303 $ causing the late acceleration. It is found that the universe will collapse in future. Further, it is investigated that back-reaction of quantum particles produced near the collapse time can avoid cosmic collapse and the universe will escape to revival of the state of early universe.

  6. The influence of stratus, stratocumulus, and altocumulus clouds on the spectral distribution of solar radiation over Antarctic waters

    E-Print Network [OSTI]

    Pettett, James Eugene

    1973-01-01T23:59:59.000Z

    ON TEE I I ! 1 INFLUENCE OF STRATUS& STRATOCUMULUS, AND ALTOCUMULUS CLOUDS SPECTRAL DISTRIBUTION OF SOLAR RADIATION OVER ANTARCTIC WATERS A Thesis by JAMES EUGENE PETTETT Submitted to the Graduate College of Texas ARM University... in partial fulfillment of the requirements for the MASTER OF SCIENCE degree of August 1973 Major Subjett: Meteorology THE INFLUENCE OF STRATUS, STRATOCUMULUS, AND ALTOCUMULUS CLOUDS ON THE SPECTRAL DISTRIBUTION OF SOLAR RADIATION OVER ANTARCTIC WATERS...

  7. A parametric study of shock jump chemistry, electron temperature, and radiative heat transfer models in hypersonic flows

    E-Print Network [OSTI]

    Greendyke, Robert Brian

    2012-06-07T23:59:59.000Z

    A PARAMETRIC STUDY OF SHOCK JUMP CHEMISTRY, ELECTRON TEMPERATURE, AND RADIATIVE HEAT TRANSFER MODELS IN HYPERSONIC FLOWS A Thesis by ROBERT BRIAN GREENDYKE Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1988 Major Subject: Aerospace Engineering A PARAMETRIC STUDY OF SHOCK JUMP CHEMISTRY, ELECTRON TEMPERATURE, AND RADIATIVE HEAT TRANSFER MODELS IN HYPERSONIC FLOWS A Thesis by ROBERT BRIAN...

  8. Bowling Green State University Coordinator of Library Instruction, University Libraries

    E-Print Network [OSTI]

    Moore, Paul A.

    Bowling Green State University Coordinator of Library Instruction, University Libraries The University Libraries (UL) at Bowling Green State University (BGSU) invites applications and nominations and the University of Toledo, is managed by the University Libraries. Established in 1910, BGSU has received

  9. UNIVERSITY OF VIRGINIA ENGINEERING FOUNDATION

    E-Print Network [OSTI]

    Acton, Scott

    UNIVERSITY OF VIRGINIA ENGINEERING FOUNDATION I __________________________________________ pledge to contribute or make possible a gift to the University of Virginia Engineering Foundation for the University: ________________________________________________________ ________________________________________________________________ Please make check payable to the Engineering Foundation and return to the University of Virginia

  10. Vorticity survival in magnetised Friedmann universes

    E-Print Network [OSTI]

    Fani Dosopoulou; Christos G. Tsagas

    2014-05-07T23:59:59.000Z

    We use a general relativistic approach to investigate the effects of weak cosmological magnetic fields on linear rotational perturbations during the radiation and dust epochs of the universe. This includes ordinary kinematic vorticity, as well as vortex-like inhomogeneities in the density distribution of the cosmic medium. Our study confirms that magnetic fields can source both types of perturbations and shows that their presence also helps cosmic rotation to survive longer. In agreement with previous Newtonian studies, we find that during the dust era vorticity decays slower than in non-magnetised cosmologies. Prior to equipartition the magnetic effect is more pronounced, since it helps the aforementioned rotational distortions to maintain constant magnitude. Overall, magnetised universes seem to provide a much better environment for the survival of cosmic vorticity than their magnetic-free counterparts.

  11. Stereotactic Body Radiation Therapy Can Be Used Safely to Boost Residual Disease in Locally Advanced Non-Small Cell Lung Cancer: A Prospective Study

    SciTech Connect (OSTI)

    Feddock, Jonathan, E-mail: jmfedd0@uky.edu [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky (United States)] [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky (United States); Arnold, Susanne M. [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky (United States) [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky (United States); Department of Medical Oncology, University of Kentucky, Lexington, Kentucky (United States); Shelton, Brent J. [Department of Biostatistics, University of Kentucky, Lexington, Kentucky (United States)] [Department of Biostatistics, University of Kentucky, Lexington, Kentucky (United States); Sinha, Partha; Conrad, Gary [Department of Radiology, University of Kentucky, Lexington, Kentucky (United States)] [Department of Radiology, University of Kentucky, Lexington, Kentucky (United States); Chen, Li [Department of Biostatistics, University of Kentucky, Lexington, Kentucky (United States)] [Department of Biostatistics, University of Kentucky, Lexington, Kentucky (United States); Rinehart, John [Department of Medical Oncology, University of Kentucky, Lexington, Kentucky (United States)] [Department of Medical Oncology, University of Kentucky, Lexington, Kentucky (United States); McGarry, Ronald C. [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky (United States)] [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky (United States)

    2013-04-01T23:59:59.000Z

    Purpose: To report the results of a prospective, single-institution study evaluating the feasibility of conventional chemoradiation (CRT) followed by stereotactic body radiation therapy (SBRT) as a means of dose escalation for patients with stage II-III non-small cell lung cancer (NSCLC) with residual disease. Methods and Materials: Patients without metastatic disease and with radiologic evidence of limited residual disease (?5 cm) within the site of the primary tumor and good or complete nodal responses after standard CRT to a target dose of 60 Gy were considered eligible. The SBRT boost was done to achieve a total combined dose biological equivalent dose >100 Gy to the residual primary tumor, consisting of 10 Gy ◊ 2 fractions (20 Gy total) for peripheral tumors, and 6.5 Gy ◊ 3 fractions (19.5 Gy total) for medial tumors using the Radiation Therapy Oncology Group protocol 0813 definitions. The primary endpoint was the development of grade ?3 radiation pneumonitis (RP). Results: After a median follow-up of 13 months, 4 patients developed acute grade 3 RP, and 1 (2.9%) developed late and persistent grade 3 RP. No patients developed grade 4 or 5 RP. Mean lung dose, V2.5, V5, V10, and V20 values were calculated for the SBRT boost, and none were found to significantly predict for RP. Only advancing age (P=.0147), previous smoking status (P=.0505), and high CRT mean lung dose (P=.0295) were significantly associated with RP development. At the time of analysis, the actuarial local control rate at the primary tumor site was 82.9%, with only 6 patients demonstrating recurrence. Conclusions: Linear accelerator-based SBRT for dose escalation of limited residual NSCLC after definitive CRT was feasible and did not increase the risk for toxicity above that for standard radiation therapy.

  12. NREL Solar Radiation Resource Assessment Project: Status and outlook. FY 1991 annual progress report

    SciTech Connect (OSTI)

    Renne, D.; Riordan, C.; Maxwell, E.; Stoffel, T.; Marion, B.; Rymes, M.; Wilcox, S.; Myers, D.

    1992-05-01T23:59:59.000Z

    This report summarizes the activities and accomplishments of NREL`s Solar Radiation Resource Assessment Project during fiscal year 1991. Currently, the primary focus of the SRRAP is to produce a 1961--1990 National Solar Radiation Data Base, providing hourly values of global horizontal, diffuse, and direct normal solar radiation at approximately 250 sites around the United States. Because these solar radiation quantities have been measured intermittently at only about 50 of these sites, models were developed and applied to the majority of the stations to provide estimates of these parameters. Although approximately 93% of the data base consists of modeled data this represents a significant improvement over the SOLMET/ERSATZ 1952--1975 data base. The magnitude and importance of this activity are such that the majority of SRRAP human and financial in many other activities, which are reported here. These include the continued maintenance of a solar radiation monitoring network in the southeast United States at six Historically Black Colleges and Universities (HBCU`s), the transfer of solar radiation resource assessment technology through a variety of activities, participation in international programs, and the maintenance and operation of NREL`s Solar Radiation Research Laboratory. 17 refs.

  13. Bevacizumab as Therapy for Radiation Necrosis in Four Children With Pontine Gliomas

    SciTech Connect (OSTI)

    Liu, Arthur K., E-mail: arthur.liu@ucdenver.ed [University of Colorado Denver, Department of Radiation Oncology, Aurora, CO (United States); Macy, Margaret E.; Foreman, Nicholas K. [Children's Hospital, Denver, Department of Neuro-Oncology, Aurora, CO (United States)

    2009-11-15T23:59:59.000Z

    Purpose: Diffuse pontine gliomas are a pediatric brain tumor that is fatal in nearly all patients. Given the poor prognosis for patients with this tumor, their quality of life is very important. Radiation therapy provides some palliation, but can result in radiation necrosis and associated neurologic decline. The typical treatment for this necrosis is steroid therapy. Although the steroids are effective, they have numerous side effects that can often significantly compromise quality of life. Bevacizumab, an antibody against vascular endothelial growth factor, has been suggested as a treatment for radiation necrosis. We report on our initial experience with bevacizumab therapy for radiation necrosis in pediatric pontine gliomas. Materials and Methods: Four children with pontine gliomas treated at the Children's Hospital in Denver and the University of Colorado Denver developed evidence of radiation necrosis both clinically and on imaging. Those 4 children then received bevacizumab as a treatment for the radiation necrosis. We reviewed the clinical outcome and imaging findings. Results: After bevacizumab therapy, 3 children had significant clinical improvement and were able to discontinue steroid use. One child continued to decline, and, in retrospect, had disease progression, not radiation necrosis. In all cases, bevacizumab was well tolerated. Conclusions: In children with pontine gliomas, bevacizumab may provide both therapeutic benefit and diagnostic information. More formal evaluation of bevacizumab in these children is needed.

  14. Oncology Group (DeCOG)

    E-Print Network [OSTI]

    Universitšt Des Saarl

    Dacarbazine and interferon ? with or without interleukin 2 in metastatic melanoma: a randomized phase III

  15. Solid state radiative heat pump

    DOE Patents [OSTI]

    Berdahl, P.H.

    1984-09-28T23:59:59.000Z

    A solid state radiative heat pump operable at room temperature (300 K) utilizes a semiconductor having a gap energy in the range of 0.03-0.25 eV and operated reversibly to produce an excess or deficit of change carriers as compared equilibrium. In one form of the invention an infrared semiconductor photodiode is used, with forward or reverse bias, to emit an excess or deficit of infrared radiation. In another form of the invention, a homogenous semiconductor is subjected to orthogonal magnetic and electric fields to emit an excess or deficit of infrared radiation. Three methods of enhancing transmission of radiation the active surface of the semiconductor are disclosed. In one method, an anti-refection layer is coated into the active surface of the semiconductor, the anti-reflection layer having an index of refraction equal to the square root of that of the semiconductor. In the second method, a passive layer is speaced trom the active surface of the semiconductor by a submicron vacuum gap, the passive layer having an index of refractive equal to that of the semiconductor. In the third method, a coupler with a paraboloid reflecting surface surface is in contact with the active surface of the semiconductor, the coupler having an index of refraction about the same as that of the semiconductor.

  16. Hawking radiation in moving plasmas

    E-Print Network [OSTI]

    L. C. Garcia de Andrade

    2005-09-07T23:59:59.000Z

    Bi-metricity and Hawking radiation are exhibit in non-relativistic moving magnetohydrodynamics (MHD) plasma medium generating two Riemannian effective spacetimes. The first metric is a flat metric although the speed of "light" is given by a time dependent signal where no Hawking radiation or effective black holes are displayed. This metric comes from a wave equation which the scalar function comes from the scalar potential of the background velocity of the fluid and depends on the perturbation of the magnetic background field. The second metric is an effective spacetime metric which comes from the perturbation of the background MHD fluid. This Riemann metric exhibits a horizon and Hawking radiation which can be expressed in terms of the background constant magnetic field. The effective velocity is given Alfven wave velocity of plasma physics. The effective black hole found here is analogous to the optical black hole in moving dielectrics found by De Lorenci et al [Phys. Rev. D (2003)] where bi-metricity and Hawking radiation in terms of the electric field are found.

  17. Gravitational Radiation in Noncommutative Gravity

    E-Print Network [OSTI]

    A. Jahan; N. Sadeghnezhad

    2014-11-24T23:59:59.000Z

    The gravitational radiation power of a binary system in a noncommutative space is derived and it's rate of the period decrease is calculated to first order in noncommutativity parameter. By comparing the theoretical results with the observational data of the binary pulsar PSR 1913+16, we find a bound on the noncommutativity parameter.

  18. tight environment high radiation area

    E-Print Network [OSTI]

    McDonald, Kirk

    #12;Irradiation Studies of Optical Components - II CERN, week of Oct. 24, 2005 1.4 GeV proton beam 4 x· tight environment · high radiation area · non-serviceable area · passive components · optics only, no active electronics · transmit image through flexible fiber bundle Optical Diagnostics 01-13-2006 1 #12

  19. Solid state radiative heat pump

    DOE Patents [OSTI]

    Berdahl, Paul H. (Oakland, CA)

    1986-01-01T23:59:59.000Z

    A solid state radiative heat pump (10, 50, 70) operable at room temperature (300.degree. K.) utilizes a semiconductor having a gap energy in the range of 0.03-0.25 eV and operated reversibly to produce an excess or deficit of charge carriers as compared to thermal equilibrium. In one form of the invention (10, 70) an infrared semiconductor photodiode (21, 71) is used, with forward or reverse bias, to emit an excess or deficit of infrared radiation. In another form of the invention (50), a homogeneous semiconductor (51) is subjected to orthogonal magnetic and electric fields to emit an excess or deficit of infrared radiation. Three methods of enhancing transmission of radiation through the active surface of the semiconductor are disclosed. In one method, an anti-reflection layer (19) is coated into the active surface (13) of the semiconductor (11), the anti-reflection layer (19) having an index of refraction equal to the square root of that of the semiconductor (11). In the second method, a passive layer (75) is spaced from the active surface (73) of the semiconductor (71) by a submicron vacuum gap, the passive layer having an index of refractive equal to that of the semiconductor. In the third method, a coupler (91) with a paraboloid reflecting surface (92) is in contact with the active surface (13, 53) of the semiconductor (11, 51), the coupler having an index of refraction about the same as that of the semiconductor.

  20. 7, 72357275, 2007 Adaptive radiative

    E-Print Network [OSTI]

    Boyer, Edmond

    Discussions Two adaptive radiative transfer schemes for numerical weather prediction models V. Venema 1 , A numerical weather prediction (NWP) and climate models. The atmosphere and the land surface are complex-stream approximation. In most weather prediction models these parameterisation schemes are therefore called infre

  1. W. FIFTH AVE. RADIATION LAB

    E-Print Network [OSTI]

    Ohta, Shigemi

    W. FIFTH AVE. NASA SPACE RADIATION LAB 958 ENERGY EFFICIENCY & CONSERVATION DIVISION THOMSON RD. E WASTE MANAGEMENT FACILITY INSTRUMENTATION 901906 750 801 701 703 815 933 912 923 925 911 938 939 902 197 Matter Physics & Materials Science Dept. 480 J5 Medical Research Center 490 H7 National Synchrotron Light

  2. University of Toronto Governing Council

    E-Print Network [OSTI]

    Boonstra, Rudy

    fiVO AR BO R VELUT University of Toronto Governing Council W eb C opy UNIVERSITY FUNDS INVESTMENT://www.governingcouncil.utoronto.ca/ #12;UNIVERSITY FUNDS INVESTMENT POLICY June 21, 2007 Table of Contents 1. DESCRIPTION OF UNIVERSITY.....................................................................................................6 W eb C opy University of Toronto Governing Council--Web version 2 #12;UNIVERSITY FUNDS INVESTMENT

  3. Forms of matter and forms of radiation

    E-Print Network [OSTI]

    Maurice Kleman

    2011-04-08T23:59:59.000Z

    The theory of defects in ordered and ill-ordered media is a well-advanced part of condensed matter physics. Concepts developed in this field also occur in the study of spacetime singularities, namely: i)- the topological theory of quantized defects (Kibble's cosmic strings) and ii)- the Volterra process for continuous defects, used to classify the Poincar\\'e symmetry breakings. We reassess the classification of Minkowski spacetime defects in the same theoretical frame, starting from the conjecture that these defects fall into two classes, as on they relate to massive particles or to radiation. This we justify on the empirical evidence of the Hubble's expansion. We introduce timelike and null congruences of geodesics treated as ordered media, viz. 'm'-crystals of massive particles and 'r'-crystals of massless particles, with parallel 4-momenta in M^4. Classifying their defects (or 'forms') we find (i) 'm'- and 'r'- Volterra continuous line defects and (ii) quantized topologically stable 'r'-defects, these latter forms being of various dimensionalities. Besides these 'perfect' forms, there are 'imperfect' disclinations that bound misorientation walls in three dimensions. We also speculate on the possible relation of these forms with the large-scale structure of the Universe.

  4. History of the Stanford Synchrotron Radiation Lightsource | Stanford...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    History of the Stanford Synchrotron Radiation Lightsource SPEAR Based on new applications of synchrotron radiation, SSRL began in 1973 as the Stanford Synchrotron Radiation Project...

  5. TEC Working Group Topic Groups Rail Key Documents Radiation Monitoring...

    Broader source: Energy.gov (indexed) [DOE]

    Radiation Monitoring Subgroup TEC Working Group Topic Groups Rail Key Documents Radiation Monitoring Subgroup Radiation Monitoring Subgroup Draft Work Plan - February 4, 2008 More...

  6. Radiation Safety Manual rev January 2002 Glossary........................................................................................................................ v

    E-Print Network [OSTI]

    Wilcock, William

    Page i Radiation Safety Manual rev January 2002 Contents Glossary........................................................................................................................ v Section 1 Emergencies Involving Radiation A. Emergency Phone Numbers................................................................................................. 2-1 C. Radiation Producing Machines

  7. DESCRIPTION OF A SPECTRAL ATMOSPHERIC RADIATION MONITORING NETWORK

    E-Print Network [OSTI]

    Martin, M.

    2011-01-01T23:59:59.000Z

    spectral atmospheric radiation data. The large cylindricalexisting integrated net radiation data is of impor- tance,infrared radiation intensities. The data is permanently

  8. Deriving cloud velocity from an array of solar radiation measurements

    E-Print Network [OSTI]

    Bosch, J.L.; Zheng, Y.; Kleissl, J.

    2013-01-01T23:59:59.000Z

    medium term operational solar radiation forecasts in the US.term forecasting of solar radiation: a statistical approachterm forecasting of solar radiation based on satellite data.

  9. Radiation Detection Computational Benchmark Scenarios

    SciTech Connect (OSTI)

    Shaver, Mark W.; Casella, Andrew M.; Wittman, Richard S.; McDonald, Ben S.

    2013-09-24T23:59:59.000Z

    Modeling forms an important component of radiation detection development, allowing for testing of new detector designs, evaluation of existing equipment against a wide variety of potential threat sources, and assessing operation performance of radiation detection systems. This can, however, result in large and complex scenarios which are time consuming to model. A variety of approaches to radiation transport modeling exist with complementary strengths and weaknesses for different problems. This variety of approaches, and the development of promising new tools (such as ORNLís ADVANTG) which combine benefits of multiple approaches, illustrates the need for a means of evaluating or comparing different techniques for radiation detection problems. This report presents a set of 9 benchmark problems for comparing different types of radiation transport calculations, identifying appropriate tools for classes of problems, and testing and guiding the development of new methods. The benchmarks were drawn primarily from existing or previous calculations with a preference for scenarios which include experimental data, or otherwise have results with a high level of confidence, are non-sensitive, and represent problem sets of interest to NA-22. From a technical perspective, the benchmarks were chosen to span a range of difficulty and to include gamma transport, neutron transport, or both and represent different important physical processes and a range of sensitivity to angular or energy fidelity. Following benchmark identification, existing information about geometry, measurements, and previous calculations were assembled. Monte Carlo results (MCNP decks) were reviewed or created and re-run in order to attain accurate computational times and to verify agreement with experimental data, when present. Benchmark information was then conveyed to ORNL in order to guide testing and development of hybrid calculations. The results of those ADVANTG calculations were then sent to PNNL for compilation. This is a report describing the details of the selected Benchmarks and results from various transport codes.

  10. Kingdom of Saudi Arabia Solar Radiation Atlas

    SciTech Connect (OSTI)

    NREL

    1998-12-16T23:59:59.000Z

    This atlas provides a record of monthly mean solar radiation generated by a Climatological Solar Radiation model, using quasi-climatological inputs of cloud cover, aerosol optical depth, precipitable water vapor, ozone, surface albedo, and atmospheric pressure.

  11. Integrated nuclear radiation detector and monitor

    SciTech Connect (OSTI)

    Biehl, B.L.; Lieberman, S.I.

    1982-06-22T23:59:59.000Z

    A battery powered device which can continuously monitor and detect nuclear radiation utilizing fully integrated circuitry and which is provided with an alarm which alerts persons when the radiation level exceeds a predetermined threshold.

  12. Smith Purcell radiation from femtosecond electron bunches

    E-Print Network [OSTI]

    Korbly, Stephen E

    2005-01-01T23:59:59.000Z

    We present theoretical and experimental results from a Smith-Purcell radiation experiment using the electron beam from a 17 GHz high gradient accelerator. Smith- Purcell radiation occurs when a charged particle travels ...

  13. College of Health Sciences RAS Radiation Sciences

    E-Print Network [OSTI]

    MacAdam, Keith

    ; excitation and ionization processes; selected nuclear reactions; basic radiation detection and dosimetry, and nuclear medical physics. Prereq or concur: RM/PHY 472G or consent of instructor. (Same as PHY/RM 546.) RAS 601 ADVANCED RADIATION DOSIMETRY. (2

  14. Modelling of Radiative Transfer in Light Sources

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    of equations . . . . . . . . . . . . . . . . . 19 2.4 Transport equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 3.2 The equation for radiative transfer . . . . . . . . . . . . . . . . . . . . . . . . 44 3Modelling of Radiative Transfer in Light Sources PROEFSCHRIFT ter verkrijging van de graad van

  15. MEASUREMENT OF CIRCUMSOLAR RADIATION - STATUS REPORT

    E-Print Network [OSTI]

    Grether, D.F.

    2011-01-01T23:59:59.000Z

    15, 1976. "Circumsolar Radiation Data for Central Receiverdata on the instantaneous values of circum- solar radiation andradiation over the course of a day, month or year; and 3) detailed data

  16. Performance Evaluation of Undulator Radiation at CEBAF

    SciTech Connect (OSTI)

    Chuyu Liu, Geoffrey Krafft, Guimei Wang

    2010-05-01T23:59:59.000Z

    The performance of undulator radiation (UR) at CEBAF with a 3.5 m helical undulator is evaluated and compared with APS undulator-A radiation in terms of brilliance, peak brilliance, spectral flux, flux density and intensity distribution.

  17. Radiation Damage in Nanostructured Metallic Films

    E-Print Network [OSTI]

    Yu, Kaiyuan

    2013-04-15T23:59:59.000Z

    with favorable microstructures and to investigate their response to radiation. The goals of this thesis are to study the radiation responses of several nanostructured metallic thin film systems, including Ag/Ni multilayers, nanotwinned Ag and nanocrystalline Fe...

  18. Annual DOE Occupational Radiation Exposure | 1980 Report

    Broader source: Energy.gov [DOE]

    The Thirteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1980.

  19. Annual DOE Occupational Radiation Exposure | 1983 Report

    Broader source: Energy.gov [DOE]

    The Sixteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1983.

  20. Annual DOE Occupational Radiation Exposure | 1986 Report

    Broader source: Energy.gov [DOE]

    The Nineteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1986.

  1. Annual DOE Occupational Radiation Exposure | 1982 Report

    Broader source: Energy.gov [DOE]

    The Fifteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1982.

  2. Annual DOE Occupational Radiation Exposure | 1979 Report

    Broader source: Energy.gov [DOE]

    The Twelfth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1979.

  3. Annual DOE Occupational Radiation Exposure | 1985 Report

    Broader source: Energy.gov [DOE]

    The Eighteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1985.

  4. Annual DOE Occupational Radiation Exposure | 1984 Report

    Broader source: Energy.gov [DOE]

    The Seventeenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1984.

  5. Annual DOE Occupational Radiation Exposure | 1981 Report

    Broader source: Energy.gov [DOE]

    The Fourteenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1981.

  6. Annual DOE Occupational Radiation Exposure | 1977 Report

    Broader source: Energy.gov [DOE]

    The Tenth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1977.

  7. Annual DOE Occupational Radiation Exposure | 1978 Report

    Broader source: Energy.gov [DOE]

    The Eleventh Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1978.

  8. Annual DOE Occupational Radiation Exposure | 1975 Report

    Broader source: Energy.gov [DOE]

    The Eighth Annual Report of Radiation Exposures for ERDA & ERDA Contractor Employees analyzes occupational radiation exposures at the Energy Research and Development Administration (ERDA) and its contractor employees during 1975.

  9. Cellular telephone-based radiation detection instrument

    DOE Patents [OSTI]

    Craig, William W. (Pittsburg, CA); Labov, Simon E. (Berkeley, CA)

    2011-06-14T23:59:59.000Z

    A network of radiation detection instruments, each having a small solid state radiation sensor module integrated into a cellular phone for providing radiation detection data and analysis directly to a user. The sensor module includes a solid-state crystal bonded to an ASIC readout providing a low cost, low power, light weight compact instrument to detect and measure radiation energies in the local ambient radiation field. In particular, the photon energy, time of event, and location of the detection instrument at the time of detection is recorded for real time transmission to a central data collection/analysis system. The collected data from the entire network of radiation detection instruments are combined by intelligent correlation/analysis algorithms which map the background radiation and detect, identify and track radiation anomalies in the region.

  10. Annual DOE Occupational Radiation Exposure | 1976 Report

    Broader source: Energy.gov [DOE]

    The Ninth Annual Report of Radiation Exposures for DOE & DOE Contractor Employees analyzes occupational radiation exposures at the U.S. Department of Energy (DOE) and its contractor employees during 1976.

  11. DOE 2010 Occupational Radiation Exposure November 2011

    SciTech Connect (OSTI)

    U.S. Department of Energy, Office of Health, Safety and Security, Office of Analysis

    2011-11-11T23:59:59.000Z

    This report discusses radiation protection and dose reporting requirements, presents the 2010 occupational radiation dose data trended over the past 5 years, and includes instructions to submit successful ALARA projects.

  12. University Advancement | University Communications and Marketing University Events & Programs

    E-Print Network [OSTI]

    New Hampshire, University of

    England Center, 15 Strafford Ave., Durham, New Hampshire, 03824 ph.: 603 -862-1461 fax: 603 The Pease Greeters Scholarship in memory of Charles Nichols recognizes a University of New Hampshire student for public service and an affiliation with the U.S. military. This scholarship is established with the intent

  13. CRAD, Environmental Radiation Protection- December 7, 2009

    Broader source: Energy.gov [DOE]

    Environmental Radiation Protection, Inspection Criteria, Approach, and Lines of Inquiry (HSS CRAD 64-36, Rev. 0)

  14. Atmospheric State, Cloud Microphysics and Radiative Flux

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mace, Gerald

    Atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates for the ARM Southern Great Plains (SGP) site. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

  15. Radiation issues for the nuclear industry

    SciTech Connect (OSTI)

    Harward, E.D. (ed.)

    1983-01-01T23:59:59.000Z

    These proceedings are organized under the following categories: Radiation Control: New Issues; Exploring the Use of a De Minimus Concept in Radiation Protection; Evolving Radiation Protection Standards; Occupational Radiation Protection: Are We Doing Enough; and Emergency Planning: the Potassium Iodide Issue. A separate abstract was prepared for each of 22 papers for the Energy Data Base (EDB) and for Energy Abstracts for Policy Analysis (EAPA); 6 of the papers are included in Energy Research Abstracts (ERA). Three papers were processed earlier.

  16. Optimization of radiation protection: a bibliography

    SciTech Connect (OSTI)

    Tang, G.R.; Khan, T.A.; Sullivan, S.G.

    1996-10-01T23:59:59.000Z

    This document provides a bibliography of radiation protection optimization documents. Abstracts, an author index, and a subject index are provided.

  17. 1991-2005 National Solar Radiation Database

    SciTech Connect (OSTI)

    Wilcox, S.

    2007-05-01T23:59:59.000Z

    This fact sheet provides an overview of the purpose, benefit, and features of the newly updated National Solar Radiation Database.

  18. All conformally flat pure radiation metrics

    E-Print Network [OSTI]

    S. Brian Edgar; Garry Ludwig

    1996-12-20T23:59:59.000Z

    The complete class of conformally flat, pure radiation metrics is given, generalising the metric recently given by Wils.

  19. Modeling radiation characteristics of semitransparent media

    E-Print Network [OSTI]

    Pilon, Laurent

    and Viskanta8 have proposed a model for the effective radiation characteristics of glass foams. Their analysis

  20. Radiation-Resistant Reconnaissance Robot Introduction Design

    E-Print Network [OSTI]

    Provancher, William

    are water-moderated. This type of reactor consists of a deep pool filled with water, uranium fuel rods. Radiation Resistance Control/Communication The objective of this project is to develop a submersible radiation- resistant, tether-operated robot for use in a water-moderated reactor pool. 1. Radiation