National Library of Energy BETA

Sample records for questions divider bar

  1. PULSE RATE DIVIDER

    DOE Patents [OSTI]

    McDonald, H.C. Jr.

    1962-12-18

    A compact pulse-rate divider circuit affording low impedance output and high input pulse repetition rates is described. The circuit features a single secondary emission tube having a capacitor interposed between its dynode and its control grid. An output pulse is produced at the anode of the tube each time an incoming pulse at the control grid drives the tube above cutoff and the duration of each output pulse corresponds to the charging time of the capacitor. Pulses incoming during the time the grid bias established by the discharging capacitor is sufficiently negative that the pulses are unable to drive the tube above cutoff do not produce output pulses at the anode; these pulses are lost and a dividing action is thus produced by the circuit. The time constant of the discharge path may be vanied to vary in turn the division ratio of the circuit; the time constant of the charging circuit may be varied to vary the width of the output pulses. (AEC)

  2. Laser dividing apparatus

    DOE Patents [OSTI]

    English, Jr., R. Edward (Tracy, CA); Johnson, Steve A. (Tracy, CA)

    1995-01-01

    A laser beam dividing apparatus (10) having a first beam splitter (14) with an aperture (16) therein positioned in the path of a laser beam (12) such that a portion of the laser beam (12) passes through the aperture (16) onto a second beam splitter (20) and a portion of the laser beam (12) impinges upon the first beam splitter (14). Both the first beam splitter (14) and the second beam splitter (20) are, optionally, made from a dichroic material such that a green component (24) of the laser beam (12) is reflected therefrom and a yellow component (26) is refracted therethrough. The first beam splitter (14) and the second beam splitter (20) further each have a plurality of facets (22) such that the components (24, 26) are reflected and refracted in a number equaling the number of facets (22).

  3. Past Question

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

    HallPast QuestionsAsk a Scientist Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Unfortunately, we couldn't find that question

  4. Appropriations Questions

    Broader source: Energy.gov [DOE]

    Grantees should review the terms of their award agreement to determine when funds must be expended. If there are questions regarding deadlines within the award agreement, Grantees should consult...

  5. Past Question

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

    HallAsk s ScientistPast Questions Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Unfortunately, we couldn't find that category

  6. Priority Questions

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    related to DOE Furnace NOPR LCC model and TSD Priority Questions A) It appears that the assignment of base case efficiency for each individual home is chosen based on a random assignment in the Base Case AFUE sheet D12. This ignores the likelihood that there is an economic motive for consumers in selecting condensing vs. non-condensing furnaces. That is, consumers who have good payback economics for condensing furnaces are actually less likely to be affected by a rule than those with poor

  7. Frequently Asked Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frequently Asked Questions Frequently Asked Questions This section is meant to cover the most common questions regarding the EERE Postdoctoral Research Awards. The Frequently Asked Questions (FAQs) are divided into several broad categories: general information, applications, eligibility, selection process, stipend and benefits, taxes, conditions and requirements, and travel. If you have questions about information not covered in this FAQ, please email: DOE-RPP@orau.org. General Information What

  8. Pinkbar is an epithelial-specific BAR domain protein that generates planar membrane structures

    SciTech Connect (OSTI)

    Pykäläinen, Anette; Boczkowska, Malgorzata; Zhao, Hongxia; Saarikangas, Juha; Rebowski, Grzegorz; Jansen, Maurice; Hakanen, Janne; Koskela, Essi V.; Peränen, Johan; Vihinen, Helena; Jokitalo, Eija; Salminen, Marjo; Ikonen, Elina; Dominguez, Roberto; Lappalainen, Pekka

    2013-05-29

    Bin/amphipysin/Rvs (BAR)-domain proteins sculpt cellular membranes and have key roles in processes such as endocytosis, cell motility and morphogenesis. BAR domains are divided into three subfamilies: BAR- and F-BAR-domain proteins generate positive membrane curvature and stabilize cellular invaginations, whereas I-BAR-domain proteins induce negative curvature and stabilize protrusions. We show that a previously uncharacterized member of the I-BAR subfamily, Pinkbar, is specifically expressed in intestinal epithelial cells, where it localizes to Rab13-positive vesicles and to the plasma membrane at intercellular junctions. Notably, the BAR domain of Pinkbar does not induce membrane tubulation but promotes the formation of planar membrane sheets. Structural and mutagenesis analyses reveal that the BAR domain of Pinkbar has a relatively flat lipid-binding interface and that it assembles into sheet-like oligomers in crystals and in solution, which may explain its unique membrane-deforming activity.

  9. Bar coded retroreflective target

    DOE Patents [OSTI]

    Vann, Charles S.

    2000-01-01

    This small, inexpensive, non-contact laser sensor can detect the location of a retroreflective target in a relatively large volume and up to six degrees of position. The tracker's laser beam is formed into a plane of light which is swept across the space of interest. When the beam illuminates the retroreflector, some of the light returns to the tracker. The intensity, angle, and time of the return beam is measured to calculate the three dimensional location of the target. With three retroreflectors on the target, the locations of three points on the target are measured, enabling the calculation of all six degrees of target position. Until now, devices for three-dimensional tracking of objects in a large volume have been heavy, large, and very expensive. Because of the simplicity and unique characteristics of this tracker, it is capable of three-dimensional tracking of one to several objects in a large volume, yet it is compact, light-weight, and relatively inexpensive. Alternatively, a tracker produces a diverging laser beam which is directed towards a fixed position, and senses when a retroreflective target enters the fixed field of view. An optically bar coded target can be read by the tracker to provide information about the target. The target can be formed of a ball lens with a bar code on one end. As the target moves through the field, the ball lens causes the laser beam to scan across the bar code.

  10. Triple bar, high efficiency mechanical sealer

    DOE Patents [OSTI]

    Pak, Donald J.; Hawkins, Samantha A.; Young, John E.

    2013-03-19

    A clamp with a bottom clamp bar that has a planar upper surface is provided. The clamp may also include a top clamp bar connected to the bottom clamp bar, and a pressure distribution bar between the top clamp bar and the bottom clamp bar. The pressure distribution bar may have a planar lower surface in facing relation to the upper surface of the bottom clamp bar. An object is capable of being disposed in a clamping region between the upper surface and the lower surface. The width of the planar lower surface may be less than the width of the upper surface within the clamping region. Also, the pressure distribution bar may be capable of being urged away from the top clamp bar and towards the bottom clamp bar.

  11. BAR FORMATION FROM GALAXY FLYBYS

    SciTech Connect (OSTI)

    Lang, Meagan; Holley-Bockelmann, Kelly; Sinha, Manodeep E-mail: k.holley@vanderbilt.edu

    2014-08-01

    Recently, both simulations and observations have revealed that flybys—fast, one-time interactions between two galaxy halos—are surprisingly common, nearing/comparable to galaxy mergers. Since these are rapid, transient events with the closest approach well outside the galaxy disk, it is unclear if flybys can transform the galaxy in a lasting way. We conduct collisionless N-body simulations of three coplanar flyby interactions between pure-disk galaxies to take a first look at the effects flybys have on disk structure, with particular focus on stellar bar formation. We find that some flybys are capable of inciting a bar with bars forming in both galaxies during our 1:1 interaction and in the secondary during our 10:1 interaction. The bars formed have ellipticities ? 0.5, sizes on the order of the host disk's scale length, and persist to the end of our simulations, ?5 Gyr after pericenter. The ability of flybys to incite bar formation implies that many processes associated with secular bar evolution may be more closely tied with interactions than previously thought.

  12. Wideband unbalanced waveguide power dividers and combiners

    DOE Patents [OSTI]

    Halligan, Matthew; McDonald, Jacob Jeremiah; Strassner, II, Bernd H.

    2016-05-17

    The various technologies presented herein relate to waveguide dividers and waveguide combiners for application in radar systems, wireless communications, etc. Waveguide dividers-combiners can be manufactured in accordance with custom dimensions, as well as in accordance with waveguide standards such that the input and output ports are of a defined dimension and have a common impedance. Various embodiments are presented which can incorporate one or more septum(s), one or more pairs of septums, an iris, an input matching region, a notch located on the input waveguide arm, waveguide arms having stepped transformer regions, etc. The various divider configurations presented herein can be utilized in high fractional bandwidth applications, e.g., a fractional bandwidth of about 30%, and RF applications in the Ka frequency band (e.g., 26.5-40 GHz).

  13. WIDE BAND REGENERATIVE FREQUENCY DIVIDER AND MULTIPLIER

    DOE Patents [OSTI]

    Laine, E.F.

    1959-11-17

    A regenerative frequency divider and multiplier having wide band input characteristics is presented. The circuit produces output oscillations having frequencies related by a fixed ratio to input oscillations over a wide band of frequencies. In accomplishing this end, the divider-multiplier includes a wide band input circuit coupled by mixer means to a wide band output circuit having a pass band related by a fixed ratio to that of the input circuit. A regenerative feedback circuit derives a fixed frequency ratio feedback signal from the output circuit and applies same to the mixer means in proper phase relation to sustain fixed frequency ratio oscillations in the output circuit.

  14. Callahan Divide Wind Energy Center | Open Energy Information

    Open Energy Info (EERE)

    Divide Wind Energy Center Jump to: navigation, search Name Callahan Divide Wind Energy Center Facility Callahan Divide Wind Energy Center Sector Wind energy Facility Type...

  15. Last Call for Questions

    Broader source: Energy.gov [DOE]

    Just a quick reminder that the deadline for submitting your home energy efficiency questions directly to Secretary Chu is midnight tonight (10/07). The Secretary will personally respond to some of the questions next week.

  16. Frequently Asked Questions | The Ames Laboratory

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

    Frequently Asked Questions Search (Protected content only available when logged in) Search Reset Recent FAQs When I open an email in Thunderbird, I get a yellow bar saying "unverified signature; the key type is not supported by your version of GnuPG" and the email is blank. What's happening? What do I need to know about visitor parking passes? What is the address for Ames Laboratory buildings? What are the recommended system configurations? What desktop software has reached end of

  17. ARM - Science Questions

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

    Science Questions Related Links MC3E Home News News & Press MC3E Backgrounder (PDF, 1.61MB) SGP Images ARM flickr site Field Blog ARM Data Discovery Browse Data Deployment Operations Measurements Science Plan (PDF, 3.85 MB) Featured Data Plots SGP Data Plots (all) Experiment Planning Steering Committee Science Questions MC3E Proposal Abstract and Related Campaigns Meetings Cloud Life Cycle Working Group Contacts Michael Jensen, Lead Scientist Science Questions This experiment seeks to use a

  18. ARM - Science Questions

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

    Science Questions Related Links SPARTICUS Home AAF Home Deployment Operations Measurements SGP Data Plots NASA Data Plots ARM Data Discovery Browse Data Experiment Planning SPARTICUS Proposal Abstract Science Questions Science and Operations (PDF, 1.01M) SPARTICUS Wiki News News & Press Backgrounder (PDF, 269K) Contacts Gerald Mace, Lead Scientist Science Questions Scatter plot of ice crystal number concentration from two different probes used during TWP-ICE. The differences are significant

  19. Reliability Question Comment

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

    Reliability-Question-Comment Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects & Initiatives...

  20. Unreviewed Safety Question Requirements

    Office of Environmental Management (EM)

    DOE G 424.1-1, Implementation Guide for Use in Addressing Unreviewed Safety Question Requirements Performance Objective 1: Contractor Program Documentation 1. The USQ ...

  1. Frequently Asked Questions

    Office of Energy Efficiency and Renewable Energy (EERE)

    Frequently asked questions (FAQs) and their corresponding answers regarding industrial distributed energy (DE) and combined heat and power (CHP) are provided below.

  2. Baker's Bar M Pool & Spa Low Temperature Geothermal Facility...

    Open Energy Info (EERE)

    Baker's Bar M Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Baker's Bar M Pool & Spa Low Temperature Geothermal Facility Facility Baker's Bar M...

  3. Robinson Bar Pool & Spa Low Temperature Geothermal Facility ...

    Open Energy Info (EERE)

    Robinson Bar Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Robinson Bar Pool & Spa Low Temperature Geothermal Facility Facility Robinson Bar...

  4. Problem of Questioning

    ScienceCinema (OSTI)

    None

    2011-04-25

    Le Prof.Leprince-Ringuet, chercheur sur le plan scientifique, artistique et humain, parle de la remise en question des hommes et la remise en question scientifique fondamentale ou exemplaire- plusieurs personnes prennent la parole p.ex Jeanmairet, Adam, Gregory. Le Prof.Gregory clot la soirée en remerciant le Prof.Leprince-Ringuet

  5. EA-177 Burke-Divide Electric Cooperative, Inc | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    7 Burke-Divide Electric Cooperative, Inc EA-177 Burke-Divide Electric Cooperative, Inc Order authorizing Burke-Divide Electric Cooperative, Inc to export electric energy to Canada. ...

  6. ARM - AMF Science Questions

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

    Science Questions Science Plan (PDF, 4.4M) Rob Wood Website Outreach Backgrounders English Version (PDF, 363K) Portuguese Version (PDF, 327K) AMF Posters, 2009 English Version...

  7. ARM - Science Questions

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

    Science Questions Related Links CLASIC Home AAF Home ARM Data Discovery Browse Data Post-Campaign CLASIC/CHAPS Special Session at AGU Annual Meeting, December 15-19 CLASIC Workshop, March 26-27 Data Sets Deployment Resources Measurement Platforms PNNL WRF-CuP Forecast Cloud Physics Lidar MODIS Airborne Simulator Data Mesonet Monitoring ARM Data Plots Experiment Planning CLASIC Proposal Abstract Science Questions Science and Implementation Plan (pdf) Measurement Platforms (pdf) CLASIC-Land

  8. ARM - Science Questions

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

    Science Questions Related Links ISDAC Home AAF Home AVP Aircraft Instrumentation, October 14-16, 2008 ARM Data Discovery Browse Data Post-Campaign Data Sets Flight Summary Table (PDF, 440K) ISDAC Wiki Mission Summary Journal Deployment Resources NSA Site ARM Data Plots Quick Links Experiment Planning ISDAC Proposal Abstract Full Proposal (pdf, 1,735K) Science Questions Science Overview Document for ISDAC (pdf, 525K) ISDAC Flight Planning Document (PDF, 216K) Collaborations Logistics Measurements

  9. Frequently Asked Questions

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

    Frequently Asked Questions Frequently Asked Questions 1. Does the State of Idaho have a Freedom of Information Act? Yes, it is called the "Public Records - Right to Examine", Idaho State Code 9-338. Please contact the appropriate state agency directly for the records you want. 2. Can I get a fee waiver for my requested document? DOE may determine to waive or reduce fees in cases where furnishing the information primarily benefits the general public by significantly assisting citizens

  10. An automated high-frequency inductive voltage divider

    SciTech Connect (OSTI)

    Robinson, I.A.; Bryant, S.

    1994-12-31

    We have developed an automated 16-bit binary divider for use over the frequency range 5 kHz to 300 kHz. The divider has errors of a few ppm at 100 kHz.

  11. Question and Answer to Procedural Questions on Application for Rehearing :

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Order No. 202-05-02 | Department of Energy Question and Answer to Procedural Questions on Application for Rehearing : Order No. 202-05-02 Question and Answer to Procedural Questions on Application for Rehearing : Order No. 202-05-02 Docket No. EO-05-01, Order No. 202-05-02: Question and Answer to Procedural Questions on Application for Rehearing Question and Answer to Procedural Questions on Application for Rehearing : Order No. 202-05-02 (12.25 KB) More Documents & Publications Comments

  12. Questions and Responses

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

    Responses: Question 1: Would the Government consider accepting either CMMI-DEV or CMMI-SVC Level 3 or higher since there is majority of process areas are shared between the two constellations and repeatability of processes will not be reduced since both will require Level 3 or higher? Government Response: The Government has determined that CMMI-SVC is a relatively new methodology and is in agreement that there is a considerable overlap of process areas shared between the two constellations. The

  13. Fermilab | Science | Questions for the Universe | The Birth of the Universe

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

    | What happened to the antimatter? Tevatron, Fermilab, Batavia, IL Large Hadron Collider, CERN, Geneva, Switzerland BaBar, SLAC, Menlo Park, CA Further reading courtesy of Symmetry magazine Explain it in 60 Seconds: Antimatter Explain it in 60 Seconds: CP violation BaBar's Window on the Weak Force What happened to the antimatter? Persis Drell Where has all the antimatter gone? Persis Drell, director of SLAC National Accelerator Laboratory, explains how answering questions about antimatter

  14. Needle bar for warp knitting machines

    DOE Patents [OSTI]

    Hagel, Adolf; Thumling, Manfred

    1979-01-01

    Needle bar for warp knitting machines with a number of needles individually set into slits of the bar and having shafts cranked to such an extent that the head section of each needle is in alignment with the shaft section accommodated by the slit. Slackening of the needles will thus not influence the needle spacing.

  15. Inquiring Minds - Questions About Physics

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

    your question. Sincerely, Judy Jackson, Fermilab Office of Public Affairs Hugh Montgomery, Fermilab D0 Experiment Back to Questions About Physics Main Page last modified 1...

  16. Frequently Asked Questions

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

    Questions Where do we meet the first day? We will meet at the Los Alamos Research Park (4200 Casa Grande Dr., Los Alamos, NM 87544) Suite 300 at 8:00 on the first day. What is the dress code? Students dress casually at LANL, particularly during the summer. Shorts and T-shirts are fine, but business attire is suggested when giving presentations. When working in the labs, expect to wear closed-toe shoes (no flip-flops). It is not O.K. to go bare foot while on site at the summer school. What will

  17. H. UNREVIEWED SAFETY QUESTIONS

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    3 Department of Energy Pt. 835 H. UNREVIEWED SAFETY QUESTIONS 1. The USQ process is an important tool to evaluate whether changes affect the safety basis. A contractor must use the USQ proc- ess to ensure that the safety basis for a DOE nuclear facility is not undermined by changes in the facility, the work performed, the associated hazards, or other factors that support the adequacy of the safety basis. 2. The USQ process permits a contractor to make physical and procedural changes to a nuclear

  18. Town Hall Questions Answered

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

    8, 2014 CBFO Manager's weekly update to local residents Read Carlsbad Field Office Manager Joe Franco's letter to Eddy and Lea County residents for the week of April 14: at http://1.usa.gov/1mkxm7b Town Hall Questions Answered Q. What is the condition of Panel 7 right now? A. Work teams entering the underground facility as part of ongoing Phase 3 activities are still working to determine the full condition of Panel 7. Initial entries indicate good roof conditions. Q. What's the presumed reason

  19. Question 3: Industry outlook

    SciTech Connect (OSTI)

    Carrigg, J.A.; Crespo, J.R.; Croom, J.H.; Davis, E.B. Jr.; Green, R.C. Jr.; Hale, R.W.; Howard, J.J.; McCormick, W.T. Jr.; Page, T.A.; Ryan, W.F.; Schrader, T.F.; Schuchart, J.A.; Smith, J.F.; Stys, R.D.

    1990-10-25

    This article is a collection of responses from natural gas distribution company representatives to questions on what they believe is the most important problem facing local distribution companies today and how are they positioning their companies to respond to the problem. Topics include remaining competitive in a changing market and business environment, proper pricing of services, procurement and marketing of natural gas, avoiding gas shortages from deliverability problems, coordination with state regulators on relevant issues such as cost recovery and rate structures, diversification of natural gas sources, regulation, service to customers, bypassing of local utilities, unbundling of rates and services at the pipeline level, and nonutility electric generators.

  20. Cam-controlled boring bar

    DOE Patents [OSTI]

    Glatthorn, Raymond H.

    1986-01-01

    A cam-controlled boring bar system (100) includes a first housing (152) which is rotatable about its longitudinal axis (154), and a second housing in the form of a cam-controlled slide (158) which is also rotatable about the axis (154) as well as being translatable therealong. A tool-holder (180) is mounted within the slide (158) for holding a single point cutting tool. Slide (158) has a rectangular configuration and is disposed within a rectangularly configured portion of the first housing (152). Arcuate cam slots (192) are defined within a side plate (172) of the housing (152), while cam followers (194) are mounted upon the cam slide (158) for cooperative engagement with the cam slots (192). In this manner, as the housing (152) and slide (158) rotate, and as the slide (158) also translates, a through-bore (14) having an hourglass configuration will be formed within a workpiece (16) which may be, for example, a nuclear reactor steam generator tube support plate.

  1. A newly developed Kolsky tension bar.

    SciTech Connect (OSTI)

    Lu, Wei-Yang; Song, Bo; Antoun, Bonnie R.; Connelly, Kevin; Korellis, John S.

    2010-03-01

    Investigation of damage and failure of materials under impact loading relies on reliable dynamic tensile experiments. A precise Kolsky tension bar is highly desirable. Based on the template of the Kolsky compression bar that we recently developed and presented at 2009 SEM conference, a new Kolsky tension bar apparatus was completed at Sandia National Laboratories, California. It is secured to the same optical table. Linear bearings with interior Frelon coating were employed to support the whole tension bar system including the bars and gun barrel. The same laser based alignment system was used to efficiently facilitate highly precise alignment of the bar system. However, the gun part was completely re-designed. One end of the gun barrel, as a part of loading device, was directly jointed to the bar system. A solid cylindrical striker is launched inside the gun barrel and then impacts on a flange attached to the other end of the gun barrel to facilitate a sudden tensile loading on the whole system. This design improves the quality of impact to easily produce a perfect stress wave and is convenient to utilize pulse shaping technique. A calibration and dynamic characterization of an aluminum specimen are presented.

  2. Doing Business Frequently Asked Questions

    Broader source: Energy.gov [DOE]

    The following are frequently asked questions about working with in partnership with DOE laboratories.

  3. American Bar Association Section on Environment | Open Energy...

    Open Energy Info (EERE)

    Bar Association Section on Environment Jump to: navigation, search Name: American Bar Association Section on Environment Place: Chicago, Illinois Zip: 60610 Product: The Section of...

  4. Webinar January 26: Update to the 700 bar Compressed Hydrogen...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    January 26: Update to the 700 bar Compressed Hydrogen Storage System Cost Projection Webinar January 26: Update to the 700 bar Compressed Hydrogen Storage System Cost Projection ...

  5. DOE's General Counsel Determines Sudan Act Does Not Bar Areva...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DOE's General Counsel Determines Sudan Act Does Not Bar Areva Enrichment Services LLC Loan Application DOE's General Counsel Determines Sudan Act Does Not Bar Areva Enrichment ...

  6. POSTPONED: Webinar January 26: Update to the 700 bar Compressed...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    POSTPONED: Webinar January 26: Update to the 700 bar Compressed Hydrogen Storage System Cost Projection POSTPONED: Webinar January 26: Update to the 700 bar Compressed Hydrogen ...

  7. Scientists call for antibody 'bar code' system to follow Human...

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

    Scientists call for antibody 'bar code' system to follow Human Genome Project Alumni Link: ... Scientists call for antibody 'bar code' system to follow Human Genome Project Researchers ...

  8. Wideband unbalanced waveguide power dividers and combiners (Patent...

    Office of Scientific and Technical Information (OSTI)

    Patent: Wideband unbalanced waveguide power dividers and combiners Citation Details ... DOE Contract Number: AC04-94AL85000 Resource Type: Patent Resource Relation: Patent File ...

  9. Bridging the Divide Between Poverty Reduction and Climate Change...

    Open Energy Info (EERE)

    Bridging the Divide Between Poverty Reduction and Climate Change Through Sustainable and Innovative Energy Technologies Jump to: navigation, search Tool Summary LAUNCH TOOL Name:...

  10. ${{\\bar{d}} - {\\bar{u}}}$ Flavor Asymmetry in the Proton in Chiral Effective Field Theory

    SciTech Connect (OSTI)

    Salamu, Y.; Ji, Cheung-Ryong; Melnitchouk, Wally; Wang, P.

    2015-09-01

    The ${\\bar d - \\bar u}$ flavor asymmetry in the proton arising from pion loops is computed using chiral effective field theory. The calculation includes both nucleon and ? intermediate states, and uses both the fully relativistic and heavy baryon frameworks. The x dependence of ${\\bar d - \\bar u}$ extracted from the Fermilab E866 Drell–Yan data can be well reproduced in terms of a single transverse momentum cutoff parameter regulating the ultraviolet behavior of the loop integrals. In addition to the distribution at x > 0, corrections to the integrated asymmetry from zero momentum contributions are computed, which arise from pion rainbow and bubble diagrams at x = 0. These have not been accounted for in previous analyses, and can make important contributions to the lowest moment of ${\\bar d-\\bar u}$ .

  11. Bar code application to nuclear material accountancy

    SciTech Connect (OSTI)

    Usui, S.; Sano, H. )

    1991-01-01

    For the purpose of efficient implementation of IAEA safeguards inspection, operators ought to prepare the information which is related to the strata for flow verification in a timely manner, such as physical inventory listing and summary of the fuel bundles. Today the use of bar code technique in tracing of products related data or counting number of items has been more and more applied to many facets of industry. From these points of view, the Japan Nuclear Fuel Company (NF) has been developing JNF Total Bar Code System. Now JNF has established an on-line input system of the fuel bundle accountability data by use of the bar code system to quickly prepare the information necessary for the inspection. As the first step, JNF implemented this bar code system at the flow verification to prepare physical inventory summary and location map of the fuel bundles in the storage. This paper reports that as a result of this, NF confirmed that this bar code system made it possible to input easily and quickly nuclear material accountancy information, and therefore this system is utilized as an effective and efficient measure of timely preparation for the inspection.

  12. Continental Divide El Coop Inc | Open Energy Information

    Open Energy Info (EERE)

    El Coop Inc Jump to: navigation, search Name: Continental Divide El Coop Inc Place: New Mexico Phone Number: (505) 285-6656 Website: www.cdec.coop Twitter: @maccdec Facebook:...

  13. High-frequency calibration of inductive voltage dividers

    SciTech Connect (OSTI)

    Robinson, I.A.; Bryant, S.

    1994-12-31

    We have constructed a semi-automated system for calibrating Inductive Voltage Dividers (IVDs) in the frequency range 5-300 kHz, with a target measurement uncertain of lppm at 300 kHz.

  14. Evidence for B+ -> K*0bar K*+

    SciTech Connect (OSTI)

    Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Lopez, L.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Sun, L.; Battaglia, M.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; /LBL, Berkeley /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San Diego /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /Frascati /INFN, Genoa /Genoa U. /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /Harvard U. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Karlsruhe U., EKP /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT, LNS /McGill U. /INFN, Milan /Milan U. /INFN, Milan /INFN, Milan /Milan U. /Mississippi U. /Montreal U. /Mt. Holyoke Coll. /INFN, Naples /Naples U. /INFN, Naples /INFN, Naples /Naples U. /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U. /Oregon U. /INFN, Padua /Padua U. /INFN, Padua /INFN, Padua /Padua U. /Paris U., VI-VII /Pennsylvania U. /INFN, Perugia /Perugia U. /INFN, Pisa /Pisa U. /INFN, Pisa /Pisa, Scuola Normale Superiore /INFN, Pisa /Pisa U. /INFN, Pisa /Princeton U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /Rostock U. /Rutherford /DSM, DAPNIA, Saclay /South Carolina U. /SLAC /Stanford U., Phys. Dept. /SUNY, Albany /Tennessee U. /Texas U. /Texas U., Dallas /INFN, Turin /Turin U. /INFN, Trieste /Trieste U. /Valencia U., IFIC /Victoria U. /Warwick U. /Wisconsin U., Madison

    2009-06-19

    We present measurements of the branching fraction and fraction of longitudinal polarization for the decay B{sup +} {yields} {bar K}*{sup 0} K*{sup +} with a sample of 467 {+-} 5 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at the SLAC National Accelerator Laboratory. We obtain the branching fraction {Beta}(B{sup +} {yields} {bar K}*{sup 0} K*{sup +}) = (1.2 {+-} 0.5 {+-} 0.1) x 10{sup ?6} with a significance of 3.7 standard deviations including systematic uncertainties. We measure the fraction of longitudinal polarization f{sub L} = 0.75{sub -0.26}{sup +0.16} {+-} 0.03. The first error quoted is statistical and the second is systematic.

  15. Microsoft Word - General-questions

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

    questions for operating facilities and on-going programs (1) What major scientific accomplishments and discoveries have occurred in your research area or at your facility since the...

  16. Inquiring Minds - Questions About Physics

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

    Centripedal Forces Plus Relativity You wrote: Hello, I'm not sure if this address is the right one to write to asking a physics question. But I saw a list of questions and answers at the page with this address. Therefore, I would be very grateful if you could forward this question to someone who answers it. Question: I have some problems understanding centripetal and centrifugal force. As I see it, these are a result of a type of acceleration. I'm quite sure, in space these forces also

  17. Inquiring Minds - Questions About Physics

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

    How many neutrons? Dear Mrs. Pordes, Hello. My name is Andrew Schmidt. I am writing to you concerning a question I have. I am in your daughters science class and it would be greatly appreciated if you could help me. My question is: What happens when you vary he number of neutrons in an element? Any assistence you could give me to help answer this question would be great. Thanks. andrew s. Dear Mr. Schmidt, The simple answer to your question is to say that you make "isotopes" of the

  18. Measurement of the forward-backward asymmetry of $$\\Lambda$$ and $$\\bar{\\Lambda}$$ production in $$p \\bar{p}$$ collisions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Abazov, Victor Mukhamedovich

    2016-02-09

    Here, we studymore » $$\\Lambda$$ and $$\\bar{\\Lambda}$$ production asymmetries in $$p \\bar{p} \\rightarrow \\Lambda (\\bar{\\Lambda}) X$$, $$p \\bar{p} \\rightarrow J/\\psi \\Lambda (\\bar{\\Lambda}) X$$, and $$p \\bar{p} \\rightarrow \\mu^\\pm \\Lambda (\\bar{\\Lambda}) X$$ events recorded by the D0 detector at the Fermilab Tevatron collider at $$\\sqrt{s} = 1.96$$ TeV. We find an excess of $$\\Lambda$$'s ($$\\bar{\\Lambda}$$'s) produced in the proton (antiproton) direction. This forward-backward asymmetry is measured as a function of rapidity. We confirm that the $$\\bar{\\Lambda}/\\Lambda$$ production ratio, measured by several experiments with various targets and a wide range of energies, is a universal function of "rapidity loss", i.e., the rapidity difference of the beam proton and the lambda.« less

  19. Star formation properties in barred galaxies. III. Statistical study of bar-driven secular evolution using a sample of nearby barred spirals

    SciTech Connect (OSTI)

    Zhou, Zhi-Min; Wu, Hong; Cao, Chen E-mail: hwu@bao.ac.cn

    2015-01-01

    Stellar bars are important internal drivers of secular evolution in disk galaxies. Using a sample of nearby spiral galaxies with weak and strong bars, we explore the relationships between the star formation feature and stellar bars in galaxies. We find that galaxies with weak bars tend coincide with low concentrical star formation activity, while those with strong bars show a large scatter in the distribution of star formation activity. We find enhanced star formation activity in bulges toward stronger bars, although not predominantly, consistent with previous studies. Our results suggest that different stages of the secular process and many other factors may contribute to the complexity of the secular evolution. In addition, barred galaxies with intense star formation in bars tend to have active star formation in their bulges and disks, and bulges have higher star formation densities than bars and disks, indicating the evolutionary effects of bars. We then derived a possible criterion to quantify the different stages of the bar-driven physical process, while future work is needed because of the uncertainties.

  20. Compact waveguide power divider with multiple isolated outputs

    DOE Patents [OSTI]

    Moeller, Charles P. (Del Mar, CA)

    1987-01-01

    A waveguide power divider (10) for splitting electromagnetic microwave power and directionally coupling the divided power includes an input waveguide (21) and reduced height output waveguides (23) interconnected by axial slots (22) and matched loads (25) and (26) positioned at the unused ends of input and output guides (21) and (23) respectively. The axial slots are of a length such that the wave in the input waveguide (21) is directionally coupled to the output waveguides (23). The widths of input guide (21) and output guides (23) are equal and the width of axial slots (22) is one half of the width of the input guide (21).

  1. Raising the Bar for Quality PV Modules | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Raising the Bar for Quality PV Modules Raising the Bar for Quality PV Modules October 30, 2014 - 4:58pm Addthis As photovoltaics (PV) markets expand across the United States the...

  2. Inquiring Minds - Questions About Physics

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

    Rotation of Black Holes Hello Alyssa -- The questions you sent to Fermilab about physics didn't get lost, they just got routed to a couple of lazy postdocs. That's why it took so long to get back to you. Anyway, we thought that these were such good questions that _two_ of us decided to take a crack at answering them! Below are your questions and answers from me and from my colleague Andrew Sornborger. You'll notice that sometimes we say almost exactly the same thing, and sometimes we give

  3. Inquiring Minds - Questions About Physics

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

    Electro-magnet Dear Sir, I have been set a physics assignment and I need to find out why the current effects the strength of an electro-magnet. If you know the answer I would really appreciate it if you could send it to me. That would be awesome. Thanks Luke Luke - Hello. I am a scientist here at Fermilab and your question got forwarded to me. In some sense it is a question with an easy answer, but like most science, you can keep probing the answer until you reach a question that can't be

  4. Inquiring Minds - Questions About Physics

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

    Light from a fast car I hope you have the time to answer this question. It's been an on-going dispute between my friends and [me]. Theorhetical Question: If a vehicle was traveling at the speed of light and a light source was emitted from the vehicle would there be a visible beam of light? Please help me. Thanks. "Opinions expressed are mine and not those of Rohm and Haas Company" The most likely reason for the dispute is that the question is not especially well-posed. By

  5. Inquiring Minds - Questions About Physics

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

    Question on Red Shift Dear Fermilab: I have a question, but first, thank you for the terrific new web site. You did a fantastic job. Question: Where does present theory say the energy of a red shifted photon goes? The idea that universal expansion is responsible for the red shift of intergalactic light would seem correct if light were a continuous wave. However, since a photon is a quantum of energy, and since the entire photon is presumably captured, the photon should still have the same amount

  6. Draft RFP - Questions and Answers

    National Nuclear Security Administration (NNSA)

    DE-SOL-0005982 175. Question: Attachment 1, Performance Work Statement: For UGTA drilling activities, there is no mention of whether the contractor of or the M&O...

  7. Inquiring Minds - Questions About Physics

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

    Radiation from particle annihilation How much energy is created when the particle-antiparticle annihilate? Does it release a large amount of radiation? If so, about how many rads? Heather Dear Heather, I am Don Cossairt, a physicist, and I am also the Associate Head for Radiation Protection in Fermilab's Environment, Safety, and Health Section. The Fermilab Public Affairs Office forwarded to me your question about particle-antiparticle annihilation that I am happy to try to answer your question

  8. Inquiring Minds - Questions About Physics

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

    Software Programming in Particle Detectors Question: Is it possible to use software programing in particle detectors to develop a program that can interpert data of passive radar? Answer: Thanks for sending your question. The answer greatly depends on the type of data the radar is creating and the signal you are looking for. The particle physics software is used to identify tracks of particles, that is, the imaginary lines that particles leave behind inside a set of detectors. Similar to bullets

  9. Strength of hydrostation trash rack bars

    SciTech Connect (OSTI)

    Tsvetkov, A.P.

    1985-07-01

    Trash racks are one of the important parts of the mechanical equipment of hydroelectric stations since their breakage causes shutdown of the turbines until they are repaired. Therefore, the provision of trouble-free operation of racks is of importance. The author states that the most vulnerable part of the rack structure is the bars, which can be damaged both from the static load as a result of clogging and from the stresses occurring during vibration of the bars under the effect of the water passing through them. Used for explaining the processes in the case reported here is the Milovich theory, which does not however touch on all the causes and conditions of increase of oscillation amplitude as it is observed in the laboratory.

  10. Hadron Physics in BaBar

    SciTech Connect (OSTI)

    Lafferty, G.D.; /Manchester U.

    2005-08-29

    Some recent results in hadron physics from the BaBar experiment are discussed. In particular, the observation of two new charmed states, the D*{sub sJ}{sup +}(2317) and the D*{sub sJ}{sup +}(2457), is described, and results are presented on the first measurement of the rare decay mode of the B meson, B{sup 0} {pi}{sup 0}{pi}{sup 0}.

  11. Leptonic B Decays at BaBar

    SciTech Connect (OSTI)

    Monorchio, Diego; /INFN, Naples /Naples U.

    2011-09-13

    The authors will present the most recent results on leptonic B decays B{sup {+-}(0)} {yields} K*{sup {+-}(0)} {nu}{bar {nu}} and B{sup {+-}} {yields} {mu}{sup {+-}}{nu}, based on the data collected by the BaBar detector at PEP-II, an asymmetric e{sup +}e{sup -} collider at the center of mass energy of the {Upsilon}(4S) resonance. Rare B decays have always been a standard probe for New Physics (NP) searches. The very low Standard Model (SM) rate of these decays often make them unaccessible with the present experimental datasets, unless NP effects enhance the rate up to the current experimental sensitivity. Moreover, as NP effects can modify the decay kinematic, particular attention must be payed in order to perform a model independent analysis. A B-Factory provides an unique environment where to investigate these processes. The high number of B{bar B} pairs produced by a B-Factory often allows to approach the needed experimental sensitivity. Moreover, the clean environment and the closed kinematic of the initial state enable to obtaining a very pure sample where to look for these decays.

  12. Leptonic B Decays at BaBar

    SciTech Connect (OSTI)

    Baracchini, Elisabetta; /Rome U. /INFN, Rome

    2011-11-10

    We will present the most recent results on leptonic B decays B{sup {+-}(0)} {yields} K*{sup {+-}(0)}{nu}{bar {nu}} and B{sup {+-}} {yields} {mu}{sup {+-}}{nu}, based on the data collected by the BaBar detector at PEP-II, an asymmetric e{sup +}e{sup -} collider at the center of mass energy of the {Upsilon}(4S) resonance. Rare B decays have always been a standard probe for New Physics (NP) searches. The very low Standard Model (SM) rate of these decays often make them unaccessible with the present experimental datasets, unless NP effects enhance the rate up to the current experimental sensitivity. Moreover, as NP effects can modify the decay kinematic, particular attention must be paid in order to perform a model independent analysis. A B-Factory provides an unique environment to investigate these processes. The high number of B{bar B} pairs produced by a B-Factory often allows to approach the needed experimental sensitivity. Moreover, the clean environment and the closed kinematic of the initial state enable to obtaining a very pure sample where to look for these decays.

  13. MOU Frequently Asked Questions | The Ames Laboratory

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

    MOU Frequently Asked Questions Coming Soon Return to FAQ's

  14. Geothermal resources of the Washakie and Great Divide basins, Wyoming

    SciTech Connect (OSTI)

    Heasler, H.P.; Buelow, K.L.

    1985-01-01

    The geothermal resources of the Great Divide and Washakie Basins of southern Wyoming are described. Oil well bottomhole temperatures, thermal logs of wells, and heat flow data were interpreted within a framework of geologic and hydrologic constraints. It was concluded large areas in Wyoming are underlain by water hotter than 120{sup 0}F. Isolated areas with high temperature gradients exist within each basin. 68 refs., 8 figs., 7 tabs. (ACR)

  15. Unreviewed Safety Question (USQ) Process Rev

    Office of Environmental Management (EM)

    Unreviewed Safety Question (USQ) Process Rev . 0 USQ Determination Worksheet "'-'-, Los Alamos * ... .. t .:. , :; - .. .. . 1 UNREVIEWED SAFETY QUESTION DETERMINATION ...

  16. Inquiring Minds - Questions About Physics

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

    Antihydrogen Sir, My name is Josh Epstein. I am a high School Student at Paola High School in Kansas. I was viewing your page on Antihydrogen and I had a few questions. If you are not qualified to answer these questions, please refer this E-Mail to one wyho can. What is the next logical step in the development of antihydrogen as a power source. Would the same relative makeup of a compound have to be duplicated in the "antii-sense" to make it susceptible to m/am annihalation? I.E. To

  17. Inquiring Minds - Questions About Physics

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

    Question on Antimatter I am an undergraduate student at the University of Minnesota at Duluth. I am doing a research paper on the need to increase alternative/new energy R&D funding. I would appreciate it if you could answer a couple of questions for me. Steven, My name is Glenn Blanford. In addition to working with Fermilab's Public Affairs Office, I am a researcher on the Antihydrogen Production experiment, E862, a small group (8) who have started to observe antihydrogen atoms (at

  18. Inquiring Minds - Questions About Physics

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

    You Wrote: Hi my question is what is the number of atoms in the world and why don't scientist agree on one number for them. Thank you. Hi, the answer to your question by its very nature can not be terribly accurate. However, when I pull down my copy of a college physics book, I find that it lists the mass of the earth as (6 x 10^24 kg). The mass of a proton or neutron is (1.67 x 10^-27 kg). Consequently, you can say to mediocre accuracy that the number of protons or neutrons in the earth is

  19. Inquiring Minds - Questions About Physics

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

    Question: From smaller than atoms to larger than galaxies structures spin and in doing so the centrifugal force throws things outward. Might not the Universe as a whole be spinning on an axis and what we currently ascribe to a mysterious repulsive force be a centrifugal force throwing things outward? Thrown out rather than pushed or drawn? Dan Answer: Hi Dan, You ask an interesting question and I know the straight forward answer which is: If the universe was rotating, it would be rotating about

  20. Inquiring Minds - Questions About Physics

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

    Centripetal or Centrifugal Force? You Wrote: A recent debate ended in a total draw. It was concverning centrifugal force, or its lack there of. Both sides of the argument stand for and against this common rule of physics. Centripital force was the only force affecting rotating objects, one litigator announced. My question for you is, is there such a thing as centrifugal force, or has it proven to be non-existent? Thank You very much A mediating Scientist Hi, thanks for your question, you are

  1. Inquiring Minds - Questions About Physics

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

    Color of Atoms Mr. Pordes- I have a question for science. As you probably know, we have been studying all about particles and the particle model of matter and John Dalton and everything like that. My question is though, are all atoms the same color? And if so, or even if not, how do you know?! Since they are so small, how can you see what color they are. Or do you not know? Thank you so much for your time! If you could write back with an answer, I would appreciate it! Thanks! Sincerely, Kelly

  2. Inquiring Minds - Questions About Physics

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

    Movement of the Electron Around the Nucleus Question: It is very enlightening to read your research and very delightfull to explore our world. Why does the electron have to move around the Nucleus? Why does it not loose energy moving around it? If you say that they move in fixed energy orbits why the electron still have to rotate? Lastly what decides the energy orbits? Thanks so much. -Arvind Answer: Dear Arvind, You raise some really good questions: Why does the electron have to move around the

  3. Inquiring Minds - Questions About Physics

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

    Which Atoms Can Give Electrons to Other Atoms? Dear Miss Alonso, This is a very good question, and the answer is rather complex. The first question is "how do scientists know which atoms can give electrons to other atoms?" We know from experiments on substances and from basic scientific calculations on the structure of an atom. If you have a sample of sodium and a sample of chlorine, you can measure how easily these substances combine. In this case, the combine very easily and release

  4. Inquiring Minds - Questions About Physics

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

    Question about Radioactive Decay Dear Webmaster, What is the actual 'event' that causes an unstable isotope (Ex: C(14)) to decay? I know that a neutron splits into an electron and a proton during radioactive decay, but what causes this to happen? Is it a roll of the dice, or some nuclear force gone astray? Thanks for your help! Dave Morris Dear Dave, The answer to both your questions is YES ! Sort of. The decay is random, but the probability of it taking place depends on the nuclear force (but

  5. Inquiring Minds - Questions About Physics

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

    Is gravity a particle or a wave? You Wrote: Is gravity a particle or a wave? Is the concept of gravity the same as the subatomic Graviton? Can it be a particle or a wave? Or both? Thanks, T.K. Dear T.K., Your questions struck right at the center of one of the hottest and most challenging research topics in physics. So far, physicists don't know the full answers to all your questions. Although gravity is well understood at the macroscopic (every-day-life) scale, scientists are far from

  6. Inquiring Minds - Questions About Physics

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

    Stretched By a Black Hole? You Wrote: Thank you for a very satisfactory answer to a question I asked at the end of January. I have another question. Is there a way to figure out the rate of change of acceleration, a, as one moves away from a body? At the surface of Earth a is approximately equal to 9.8 m/s2, what would a be at .5 au or any other distance to any other bodies of different masses? I am a retired person, non university type, with a keen interest in science, particularly in the

  7. Inquiring Minds - Questions About Physics

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

    boson Elisabeth, You asked: Could you help me with the following question. Is there any evidense for the existence of the Higgs bosson or Higgs field? According to the New Scientist magazine Cerns LEP should have had enough energy to create the Higgs particles but it was not detected. Thankyou very much Elisabeth Hi Elisabeth, You asked a good question. Yes, over the last ten years the evidence for the Higgs boson (or something like it) has been mounting. The many kinds of measurements we make

  8. Inquiring Minds - Questions About Physics

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

    Motion in the Universe Question: I am interested in the concept of absolute 'still' vs. all the speed references we have. I have been attempting to calculate the speed at which an individual is traveling through the universe when standing 'still'. i.e., the rotation speed of the earth, the speed of the orbit of the earth around the sun, the solar system withing our galaxy, the galaxy...etc. The odd question that struck me was that given all the relativity applications and explainations, is there

  9. Inquiring Minds - Questions About Physics

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

    Negative pressure in the universe Dear Mr. Miller, I am in the theoretical astrophysics group at Fermilab. You recently sent a question to Glenn Blanford about negative pressure in the universe. Here is an attempt at an answer: I recently read the article in Fermi News entitled Depatment of (Missing) Energy ( see FermiNews98-05-15.pdf). In the article a property called "negative presure" was discused. My question is: Is this negative pressure the result of a particle that would be the

  10. Inquiring Minds - Questions About Physics

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

    Using an accelerator to create a new element Hello, My name is Andrew and I was wondering if this is the right email forum for my question. I am only 11 so my question is as follows: I am thinking of creating a new element and I need a particle accelerator to do it, so I was wondering if I could use yours. I also have some others ideas. Please contact me A.S.A.P. Thank you for reading this e-mail. Sincerely, Andrew Dear Andrew, Thank you for your email. I'm glad to hear from a young person who

  11. Inquiring Minds - Questions About Physics

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

    Potential Barriers Hi. Is it possible to experimentally prove my following question AND my following analogous question? Does a particle really go through a wall or through a potential barrier, or is it possible that a) a particle hits the wall, and the energy is transferred (just like those balls on the double strings that tranfer energy to the last ball) until the other side of the wall emits it's own electron? Perhaps the tranfer of energy has identical velocity as the particle, or b) that

  12. Inquiring Minds - Questions About Physics

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

    Radiation Direction Hello, What is the direction of radiation emitted from an atom ? Thanks, Bob Patton Bob, Your question has always been an area of research whenever new processes are found and is a very valid one. The answer depends on the specific process in question. For one thing, a coordinate system must be chosen. If the atom is moving, then you, might use the momentum vector of the atom as the direction of reference. Usually with atoms though, the problem is solved in the rest frame. If

  13. Inquiring Minds - Questions About Physics

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

    Resonances Dear J. Oldendick, Your questions were forwarded to me. I hope you find these answers helpful. You were right that the answers to the questions about resonances and atomic levels are related, and that the uncertainty principle is involved. Let me get back to them. First you ask, "Why is the cross section for compound nucleus formation not zero between resonances?" In case you are asking this because you've seen a plot of nuclear cross sections, let me point out that the

  14. Inquiring Minds - Questions About Physics

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

    Hello, I am so happy to visited your site It was full of answers to my questions!! So, I have a question about thermal Energy...We have some kind of energy in the world. electric energy, electromagnetic energy, gravity energy and thermal energy and we know that other energies are combination of these energies. So, we can suppose these energies depended on a fields.for example electric energy is created by electric field and we can divergence from this field becouse it is vector field but for

  15. Inquiring Minds - Questions About Physics

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

    Vacuum You wrote: I'm Stephen and I moderate a theoretical physics forum at physicsforums.com. Is it possible to increase the probability that virtual particles will appear in a vacuum? I was posed this question from a member and i do not have a definite answer in my reference materials. I would greatly appreciate any response as to how/why if the question has a yes answer. Thank you for your time. Regards, Stephen J Hall, Theoretical Physics moderator PS. if you are ever browsing the net and

  16. Transition duct with divided upstream and downstream portions

    SciTech Connect (OSTI)

    McMahan, Kevin Weston; LeBegue, Jeffrey Scott; Maldonado, Jaime Javier; Dillard, Daniel Jackson; Flanagan, James Scott

    2015-07-14

    Turbine systems are provided. In one embodiment, a turbine system includes a transition duct comprising an inlet, an outlet, and a duct passage extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis. The outlet of the transition duct is offset from the inlet along the longitudinal axis and the tangential axis. The duct passage includes an upstream portion extending from the inlet and a downstream portion extending from the outlet. The turbine system further includes a rib extending from an outer surface of the duct passage, the rib dividing the upstream portion and the downstream portion.

  17. Pump tank divider plate for sump suction sodium pumps

    DOE Patents [OSTI]

    George, John A.; Nixon, Donald R.

    1977-01-01

    A circular plate extends across the diameter of "sump suction" pump, with a close clearance between the edge of the plate and the wall of the pump tank. The plate is located above the pump impeller, inlet and outlet flow nozzles but below the sodium free surface and effectively divides the pump tank into two separate chambers. On change of pump speed, the close fitting flow restriction plate limits the rate of flow into or out of the upper chamber, thereby minimizing the rate of level change in the tank and permitting time for the pump cover gas pressure to be varied to maintain an essentially constant level.

  18. Finite Element Simulations to Explore Assumptions in Kolsky Bar Experiments.

    SciTech Connect (OSTI)

    Crum, Justin

    2015-08-05

    The chief purpose of this project has been to develop a set of finite element models that attempt to explore some of the assumptions in the experimental set-up and data reduction of the Kolsky bar experiment. In brief, the Kolsky bar, sometimes referred to as the split Hopkinson pressure bar, is an experimental apparatus used to study the mechanical properties of materials at high strain rates. Kolsky bars can be constructed to conduct experiments in tension or compression, both of which are studied in this paper. The basic operation of the tension Kolsky bar is as follows: compressed air is inserted into the barrel that contains the striker; the striker accelerates towards the left and strikes the left end of the barrel producing a tensile stress wave that propogates first through the barrel and then down the incident bar, into the specimen, and finally the transmission bar. In the compression case, the striker instead travels to the right and impacts the incident bar directly. As the stress wave travels through an interface (e.g., the incident bar to specimen connection), a portion of the pulse is transmitted and the rest reflected. The incident pulse, as well as the transmitted and reflected pulses are picked up by two strain gauges installed on the incident and transmitted bars as shown. By interpreting the data acquired by these strain gauges, the stress/strain behavior of the specimen can be determined.

  19. Tennessee Nuclear Profile - Watts Bar Nuclear Plant

    U.S. Energy Information Administration (EIA) Indexed Site

    Watts Bar Nuclear Plant" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date" 1,"1,123","9,738",99.0,"PWR","application/vnd.ms-excel","application/vnd.ms-excel" ,"1,123","9,738",99.0 "Data for 2010" "PWR = Pressurized Light Water

  20. Multifamily Weatherization Frequently Asked Questions

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Multifamily Weatherization Frequently Asked Questions 1. How do Grantees define a multifamily building? It depends. There is not one all-encompassing definition for multifamily buildings and how they are addressed within WAP. There are nuances related to multifamily eligibility, multifamily auditing, and multifamily reporting that each carry their own definitions. ď‚· Eligibility: In order to be eligible for WAP funding, one of the following must be true: o At least 50% of the residential units

  1. Inquiring Minds - Questions About Physics

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

    Empty Universe You wrote: Madam/sir, Is it true that a completely empty universe, without any object, without any particle, a mere void, would be twodimensional? Jod Dear Jod, According to Einstein's general relativity, a completely empty universe could have any number of spatial dimensions. String theory would say that an empty universe should have 10 spatial dimensions. I hope this is helpful. Fermilab Physicist Back to Questions About Physics Main Page last modified 11/15

  2. Inquiring Minds - Questions About Physics

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

    The Impact of the Accelerator on the Environment Question: Some cubic thermodynamical equations of state predict negative pressures, have negative pressures any physical meaning? Could they be related to negative mass? Silvia, Mexico Answer: Dear Silvia, The short answer is that a system with negative pressure must be unstable, and thus, there are no thermodynamic states of a system with negative pressure. The reason for this is simple: The second law of thermodynamics tells us that all

  3. Inquiring Minds - Questions About Physics

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

    You wrote: What are the products from an encounter between a neutrino and an anti-neutrino? Dear Mr. Moore: The question of a neutrino and anti-neutrino encounter is interesting. First of all, the strength of the neutrino interaction is very weak, even neutrino interactions with protons or neutrons are very rare but we do measure them in experiments at Fermilab. The probability of a neutrino - antineutrino interaction is so small that it has never been directly observed. Such interactions to

  4. Inquiring Minds - Questions About Physics

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

    Question: Do you think it is possible that the velocity of an object in space determines the force of the vacuum it travels through? - Donald E. Sterling Answer: Dear Mr. Sterling, The faster a particle travels through vacuum, the more likely it is that the particle will interact with virtual particles contained in the vacuum. (At a quantum level, a vacuum is far from being empty.) Based on this quantum phenomena, scientists have predicted a maximum energy with which particles can travel long

  5. Inquiring Minds - Questions About Physics

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

    What are the virtual particles? You Wrote: What are the virtual particles? What does it mean - "virtual"? Sincerely, Anthony Petrov. Hi, you ask another very good question. "Virtual particles" are real -- they exist in that they can be detected and can interact. But they are fleeting -- they are soon gone with no trace of their existence. This phenomenon is related to the Heisenberg uncertainty principle of quantum physics. Uncertainty in time multiplied by uncertainty in

  6. 10 CFR 707 Frequently Asked Questions

    Broader source: Energy.gov [DOE]

    NOTE: The Questions on this site were compiled from questions asked during the four DOE complex wide tele-videos, as well as, questions submitted by e-mail and telephone. The answers provided are...

  7. Appendix C: Examples of review questions

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    This set of review questions was pulled from a number of EERE evaluations by the PEER Review Task Force and organized to show how questions for assessing a program differ from questions for assessing projects that make up that program.

  8. Comments/Questions? | The Ames Laboratory

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

    Comments/Questions? Name (optional): Email Address (optional): Comment/Question: * CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Submit

  9. Diamond Bar, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    district.12 Registered Energy Companies in Diamond Bar, California US South Coast Air Quality Management District SCAQMD References US Census Bureau Incorporated place...

  10. Measurement of the B0-bar Lifetime and the B0B0-bar Oscillation Frequency Using Partially Reconstructed B0-bar to D*+ l- nu-bar Decays

    SciTech Connect (OSTI)

    Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Pappagallo, M.; Pompili, A.; Chen, J.C.; Qi, N.D.; Rong, G.; Wang, P.; Zhu, Y.S.; Eigen, G.; Ofte, I.; Stugu, B. /Bergen U. /LBL, Berkeley /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /Bristol U. /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San Diego /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /Ferrara U. /INFN, Ferrara /Frascati /Genoa U. /INFN, Genoa /Harvard U. /Heidelberg U. /Imperial Coll., London /Iowa U. /Iowa State U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT, LNS /McGill U. /Milan U. /INFN, Milan /Mississippi U. /Montreal U. /Mt. Holyoke Coll. /Naples U. /INFN, Naples /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U. /Oregon U. /Padua U. /INFN, Padua /Paris U., VI-VII /Pennsylvania U. /Perugia U. /INFN, Perugia /Pisa U. /INFN, Pisa /Prairie View A-M /Princeton U. /Rome U. /INFN, Rome /Rostock U. /Rutherford /DAPNIA, Saclay /South Carolina U. /SLAC /Stanford U., Phys. Dept. /SUNY, Stony Brook /Tennessee U. /Texas U. /Texas U., Dallas /Turin U. /INFN, Turin /Trieste U. /INFN, Trieste /Valencia U., IFIC /Vanderbilt U. /Victoria U. /Warwick U. /Wisconsin U., Madison /Yale U.

    2005-07-27

    The authors present a simultaneous measurement of the {bar B}{sup 0} lifetime {tau}{sub B{sup 0}} and B{sup 0}{bar B}{sup 0} oscillation frequency {Delta}m{sub d}. We use a sample of about 50,000 partially reconstructed {bar B}{sup 0} {yields} D*{sup +}{ell}{sup -}{bar {nu}}{sub {ell}} decays identified with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring at SLAC. The flavor of the other B meson in the event is determined from the charge of another high-momentum lepton.

  11. Picture of the Week: Raising the bar on carbon capture

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

    of which come from fossil-fuel-based electricity generation. ... and the National Energy Technology Laboratory have ...orange bars represent a mix of electricity and ...

  12. MHK Projects/Bar Field Bend | Open Energy Information

    Open Energy Info (EERE)

    Bar Field Bend < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading map... "minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zo...

  13. Scientists call for antibody 'bar code' system to follow Human...

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

    Scientists call for antibody 'bar code' system to follow Human Genome Project Researchers ... on the scale of the now-completed Human Genome Project. (Image: Public Domain, ...

  14. Frequently Asked Questions (FAQs) | The Ames Laboratory

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

    Frequently Asked Questions (FAQs) Welcome to the Frequently Asked Questions page. We hope that your questions are easily answered in this section. If not, please contact us. Non-Disclosure Agreements Partnering Mechanisms: CRADA/SPP/TSA MOU - Coming Soon MTA - Coming Soon Invention Disclosure and Patents Scientific and Technical Information Publications Office of Research Opportunities - Coming Soon Detailed Questions If you have a detailed question(s) that our FAQs do not answer, please contact

  15. LED Frequently Asked Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frequently Asked Questions LED Frequently Asked Questions EERE Solid-State Lighting LED Factsheet PDF icon ledbasics.pdf More Documents & Publications LED Frequently Asked ...

  16. Policy Questions on Energy Storage Technologies | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Policy Questions on Energy Storage Technologies Policy Questions on Energy Storage Technologies Memorandum from the Electricity Advisory Committee to Secretary Chu and Assistant ...

  17. NPDES Questions & Answers | Open Energy Information

    Open Energy Info (EERE)

    Questions & Answers: SWRCB State NPDES Permit Information, current through August 14, 2014. Published NA Year Signed or Took Effect 2014 Legal Citation NPDES Questions &...

  18. Digital Data Management Frequently Asked Questions | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frequently Asked Questions Digital Data Management Frequently Asked Questions Submitting a Data Management Plan 1. I am submitting an applicationproposal for research funding in ...

  19. Appendix 12: Frequently Asked Questions

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    12: Frequently Asked Questions Q1: If a Recipient's grant is closed out, do they have to continue to report? A1: Yes. As long as the funds remain in a Financing Program, they retain their federal character, and the Recipient must continue to report. Q2: A Recipient determines that there is no longer demand for their residential RLF for energy efficiency upgrades. The Recipient would like to repurpose the funds for an energy audit and lighting upgrade of City Hall. What are the responsibilities

  20. Inquiring Minds - Questions About Physics

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

    Impact of the Accelerator on the Environment Question: How many studies have been done to figure out what escapes from the accelerators into the environment and how much of it escapes? I heard from a tour guide that there was no environmental impact, but I don't believe it. How can something dealing with so much energy and traveling so fast not have some of that energy escape into the environment? Have you done research on things like insect life, water life and plant growth in the areas near

  1. Inquiring Minds - Questions About Physics

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

    Power of the Tevatron Question: How powerful is Fermilab's accelerator in volts, amperes and watts? Aaron Nelson Answer: Dear Aaron, Fermilab's most powerful accelerator, the Tevatron, accelerates protons to an energy of 1,000 gigaelectronvolts(1,000 GeV), or 1,000 billion electronvolts. This energy corresponds to each proton traversing a voltage of 1,000 billion volts. In practical terms, the protons achieve this energy by traveling in a circle and passing an electric field 47,000 times per

  2. Inquiring Minds - Questions About Physics

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

    Ana Kata Dimension You Wrote: One day I was sitting in my living room, reading a book on physics, an idea occurred to me. (This idea probably may be unscientific and unreasonable, but read the rest of this letter anyway.) This is, specifically, a question about dimensional physics (that's probably not the real term for this branch of physics). From now-on, I will refer to the ana/kata dimension (the fourth spatial) dimension as the fourth dimension rather than the fifth dimension, even though

  3. Inquiring Minds - Questions About Physics

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

    Big Bang & Bosons Glenn, I guess what I want to ask you is a stupid question. But since I am a lay person with a lot of curiousity let me be bold enough to ask it. I understand the the standard particle theory says that large masses indicated by boson masses can only be created by lots power in accelerators. That is why the supercollider would have been great. But how does this relate if the Big Bang theory is correct? What does the current trend in elementary particle physics have to do to

  4. Inquiring Minds - Questions About Physics

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

    Blackholes Dear Juan, You asked: according to scientists,inside a black hole's event horizon nothing is able to come out, even light. also it is believed that gravity is produced by gravitrons, just like the strong force is produced by gluons,right?ok here is my question.If the gravitrons act like the gluons,how do they come out of the event horizon to atrract bodies floating outside the black hole's event horizon. or do they atract bodies just by circling at the edge of the event horizon Juan

  5. Inquiring Minds - Questions About Physics

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

    Hello, At least some contemporary big bang theories begin with the entire universe packed into a very small, atom sized volume. Since black hole densities can be achieved by compressing the earth to the size of a marble; it seems that the early universe would have been dense enough to be a black hole and would have never expanded. Are the theories of the big bang and black holes at odds? Thanks, Doug McAllister Tulsa Hello Doug, That is a very good question. The big bang theory and the existence

  6. Inquiring Minds - Questions About Physics

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

    Bosons and Antiparticles You asked: hi, i am an undergraduate student. I have a question on anti-particle. Is there negative energy state for the boson in the relativistic quantum mechanic? Then how the anti-particle of bosons can be understood with the comparision to the existance of the positron by the Dirac's negative sea (since boson do not obey the exclusion principle)? Thank You for your help There is no negative energy state for the bosons. The bosons do not have anti-particles! In fact

  7. Inquiring Minds - Questions About Physics

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

    Cosmic rays You asked: Hi, I had just a couple of questions 1) What are cosmic rays made of? If it is not known, what do the early reports say on the compostition of cosmic rays? 2)Will this add/ refine/ or refute the Standard Model? Thanks Goonjan Shah Goonjan: The composition of cosmic rays appears to change with energy. At energies of about 10**18 eV and higher the composition begins to become lighter. That is, the composition changes from heavier nuclei (up to iron) to light nuclei, mostly

  8. Inquiring Minds - Questions About Physics

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

    How does an electron on a 2p orbital cross the node of nucleus? To Fermilab, I have a question that needs answering for my chemistry class. In an atom, how does an electron on a 2p (bell shaped) orbital cross the node of the nucleus (a region of zero probability)? Does it have something to do with the wave properties of an electron? I cannot find the answer on the internet or in my chemistry book. Thank you very much. Danny Hi Danny, It does have something to do with the wave properties of the

  9. Inquiring Minds - Questions About Physics

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

    Early Universe Question Greetings Well, you most likely receive a billion messages a day from nuts like me, but here's another one for you. Before the big bang, when there was just random endergy fluctuations in this empty void. At this point, before the particle that blew up, is it possible that there could have been one dimension raining supreme, a dimension which, when seperated, become the four distinct dimensions we now live in? What I'm trying to say is, when the universe was formed,

  10. Inquiring Minds - Questions About Physics

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

    Electric Fields You asked: I have a question about electric fields. I have seen in many texbooks that show that for a negative charge, the electric field goes into itself or inwards, and it shows arrows that go into the core of the negative charge. And for the positive charge, the field goes outwards and has arrows that go outwards. But this doesn't explain how the two charges attract. Who is doing the attracting. You could say, that the positive charge is moving towards the negative charge

  11. Inquiring Minds - Questions About Physics

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

    You Wrote: What is in the area between sub atomic particles? Does this area when accelerated give off more light or does it get darker? If you were to accelerate a flashlight would the electron flow through the filament slow down? Can we determine how fast something is traveling by the amount of light it releases? How does acceleration produce light? Thank You Tom Dear Tom, Wow, that's an interesting set of questions on the topic of "light emitted by particles." I tried to reorder your

  12. Inquiring Minds - Questions About Physics

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

    Particle vs. Wave, etc. You Wrote: Thank you for writing back. Please try to answer as many questions as you can. Thanks:) Are quarks particles are waves? What about photons, I have heard from a friend experiments conducted proved it both a particle and a wave? Do quarks have spin? How can you tell? What in an atom is waves? Do protons spin in the same direction as electrons? When you say color do you really mean as you can see a color on a quark or is it just a simplified method of combining?

  13. Inquiring Minds - Questions About Physics

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

    What is in the future for physics? You wrote: We are constantly preoccupied with the next steps in our sciences. I would be interested to know, in your opinion, what the next fifteen steps are likely to be in physics in the 21st Century. With thanks for your time Stephanie G. Dear Stephanie: Your question regarding the far distant goals/discoveries of physics is obviously very difficult to answer. In particular, physics is such a vast field that it is already difficult for me to do justice to

  14. Inquiring Minds - Questions About Physics

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

    Graviton Question I am a sophomore in high school writing a reaserch paper for my honors chemistry class. While gathering information from the local libraries one book mentioned a theoretical boson called a graviton that would be responsible for the force of gravity. Could such a particle exist or is there any evidence that it might exist? If so, are there any efforts under way to try to discover it? I haven't been able to find very much information about this subject, or maybe im just looking

  15. Inquiring Minds - Questions About Physics

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

    High Frequency Beams Hi, I'm a physics student and I love the work you are doing at Fermilab. I've been watching closely your progress and I believe some of the best mind are working there. My question is about high frequency beams. I'd like to know what are the highest frequencies (in Hz) you have been using at Fermilab and in what kind of research. What is the theoretical limit for frequencies and how far are we from it? I'd really apreciate your answer. Thank you very much. Best regards,

  16. Inquiring Minds - Questions About Physics

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

    Photons and the Higgs field You asked: If all particles except photons and gluons acquire "mass" by theoretically interacting with the Higgs field and mass is felt by the gravitation field. Then why do photons curve around large bodies and can not leave a black hole? Don Dear Don: It is true that photons and gluons are massless, and that to the best of our theoretical knowledge, the other particles acquire mass by interacting with the Higgs field. But to answer your question, we need

  17. Inquiring Minds - Questions About Physics

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

    Home made particle detector Question: Would it be possible for me to build a small particle detector at home? I would like to observe some of the cosmic ray particles that hit earth. Tom Dear Tom: Yes, absolutely. All you need is a container with vapor, and charged particles zipping through will leave a trail similar to the trails left by air planes in the sky. This type of detector is called a cloud chamber. Instead of writing down all the details, I refer you to a Scientific American website.

  18. Inquiring Minds - Questions About Physics

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

    How do you make protons and antiprotons? You Wrote: In my physical science class we watched a video about how they make quarks. Our teacher told us that for extra credit we could write to you and fund the answer to these two questions: 1. How do they make the protons and antiprotons that are used in quarks? 2. How do they make the electron scanning needle? If you could e-mail me back as soon as possible with the answers I would greatly appreciate it. This extra credit could help my grade a lot.

  19. Inquiring Minds - Questions About Physics

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

    You Wrote: I'm doing a paper on quarks and I'm investigating the discovery of top quark. I have a question on the matter. When you talk about of "jets" of particles, what are you meaning? Lots of particles? Probably is an idiomatic problem because english it is not my mother tongue. Thank you. Alejandro Nieto González ETSIT- Universidad Politécnica de Madrid. Spain. Hi Alejandro, When two particles for example a proton and an antiproton collide at high energies many particles are

  20. Inquiring Minds - Questions About Physics

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

    Proof of Kepler's law? You Wrote: I have this homework question, my physics teacher said that you can prove Kepler's second law with one quantity of measurement. He hinted us with Mass and that is all he gave....Can you help me on what measurement it is that I need to prove Kepler's second law. thanx a million mark Mark, Greetings, Kepler's second law is that a planet travelling in an elliptical orbit around the sun sweeps out equal areas in equal times. This is basically a statement of

  1. Inquiring Minds - Questions About Physics

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

    You Wrote: Hi...my name is Amy. I'm a high school student in Indonesia. I want to know whether lightning could be an electricity power source, such as water electricity, nuclear electricity, etc. Please reply to my Email because I am doing a paper about lightning electricity. Thank You. Amy, Thank you for your question on lightning electricity. The answer below is from one of Fermilab's utility experts and may be more information than you need for your report. The challenge with electricity in

  2. Inquiring Minds - Questions About Physics

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

    You asked: Why is the top quark so massive? Dear High School Senior: Well, that actually is a question that all physicists would like to be able to answer. The top quark is as heavy as a gold atom--yet it is an elementary particle that, to our present knowledge, cannot be split into subunits. (Be aware that until about 100 years ago, scientists didn't think they could split atoms into smaller subunits.) How does the top quark gets its mass? Like all other particles, the top quark receives its

  3. Inquiring Minds - Questions About Physics

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

    The particle model of matter You Wrote: I am a junior high student that has ben assigned to ask the people at Fermi Lab these questions. I would be grateful if you or someone else could send me some reply info. Thank you. 1. do you think the particle model of matter is true? Why? 2. If all matter is made up of particles, then what are particles made up of? Hi Madeline, My name is Andrew Green and I am one of the experimenters at Fermilab. I am actually a graduate student here. I am pleased to

  4. Inquiring Minds - Questions About Physics

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

    Why can radio waves pass through a wall but light cannot? Hello, My name is Mike P. and this is my question. If radio & light waves are both properties of the electromagnetic spectrum then why can radio waves pass through walls but light cannot? Thank You Hello Mike P., PART 1. Let me first make sure the terminology we use is right. The words "electromagnetic spectrum" are used to name a group of waves. Not any kind of waves, ( not acoustic, not mechanical waves) but

  5. Inquiring Minds - Questions About Physics

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

    Particles from Batavia to Soudan Tom, You asked: I have been reading various pages on the Fermi website and I'm unclear how the particles to be tested get from Batavia to Soudan. Is there a physical connection like a pipeline or is this something that just happens through the earth? Sorry for what's probably a very basic question but I couldn't quite understand that point. Are there articles that explain how this happens? Thanks! Tom Hi Tom, I am a physicist working on the NuMI/MINOS project

  6. Inquiring Minds - Questions About Physics

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

    Particle Mass Measurement I don't know weather you can help me but one thing that i have been interested in for the past several years is how the mass of a particle so small can be measured and i was hopeing you might be able to help me. thank you, jeff kirkwood Dear Jeff, A very interesting question. Obviously, we can't just put a subatomic particle on a balance and weigh it. Actually R.A.Millikan did an experiment early in the century where the electric charge to mass ratio of an electron was

  7. Inquiring Minds - Questions About Physics

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

    Getting particles for the accelerator Hi I am 11 and my name is Joshua Pevitz. When I grow up I want to work at Fermilab. I was wondering if you could explain to me about how you let only one atom in the accelerator, if everything is made out of atoms? Your admirer, Joshua Pevitz Dear Joshua, Thanks for your interesting question! Let me give you the simple answer first, and then I will explain. We do not let only one atom at a time into the accelerator. Instead we have more than 10 trillion

  8. Inquiring Minds - Questions About Physics

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

    Particles and Their Properties Question: I was hoping that you could help me learn how to figure out the number of protons, the number of neutrons, and the number of electrons of a particular atom. For example, oxygen is 8 O 16, I'm not sure how to figure this out. Thanks in advance for your assistance. - D Answer: Dear D: The key properties of an atom (like oxygen) are described by the Atomic Number (which is 8 for Oxygen) and the total number of nucleons (which is 16 for Oxygen). The atomic

  9. Inquiring Minds - Questions About Physics

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

    Question: I just wish someone could explain it to me (talking vveerryyy ssllloooowwwlllyyly) so that I can have at least a clue why atoms appear to be little perpetual motion machines that are somehow unaffected by gravity, friction etc. and just keep on going and going (like that bunny). Don't other moving things in this world quickly come to a stop when force is no longer externally applied. Doesn't there HAVE to be an external force or some sort that's being applied (more or less evenly) to

  10. Inquiring Minds - Questions About Physics

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

    How do you define momentum for a photon with no mass? What is symmetry? You asked: Photons are said to have no mass but how is that. The momentum equation is m=velocity*mass so therefore the photon would have no momentum and therefore could not repel the two negatively charged electrons. Was my information right? -What exactly is symmetry laws and gauge symmetry? Dear David: Thank you for your questions. No. The equation momentum=velocity*mass only applies for massive particles. For massless

  11. Inquiring Minds - Questions About Physics

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

    Speculations on getting an Instant Cold Drink You wrote: I remember a few years ago reading about a new idea of making it possible for that when you open a can of pop that it will instantly turn cold. For some reason I remember them as saying that it will be out in a few years. I was wondering if you knew how they could do this and as to if it is true and if so, when it will come out - tim Tim, How to create an instant cold drink an interesting question. There are probably engineers in the

  12. Inquiring Minds - Questions About Physics

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

    Pure Antineutron Beams Hello, I am a physics student in Germany. I haven't had particle physics yet, so I'd be glad if you answered me one question: How do you create more or less pure anti-neutron beams in your accelerator?? I'm sure it's possible somehow but I just don't know the way to relize that. The "options" I got to know by now: collision of anti-protons with carbon nuclei can result in anti-neutrons decay of lambda-particles (how would you create them?) I guess the main

  13. Inquiring Minds - Questions About Physics

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

    You asked: What happens if you take 2 quantum entangled particles, and untangle them and put one of these particles in a blackhole? The other should demonstrate what is going on inside a blackhole; according to Einstien's "spooky action at a distance", right? Wouldn't this violate the principle that no light, or information, escapes a blackhole? Dear Stew, This is an interesting question; it sounds like a variation of the original Einstein-Podolsky-Rosen "paradox". I'm far

  14. Inquiring Minds - Questions About Physics

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

    Isolating quarks Ben, You asked: my name is ben thompson and i am student teaching at downers grove north high school. we are doing a unit in electromagnetism and somehow came upon the concept of the quark. i did some web research only to find out a tiny bit about quarks and leptons. the question that one of my students stumped me with was whether or not the scientists at fermi lab have isolated any quarks yet. i do not know, and we have decided to allow you (the knowledgeable) to help us out.

  15. Inquiring Minds - Questions About Physics

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

    Length of Particle Accelerators I have six questions. 1. How long is a particle accelerator? 2. Is it true that there are weapons 40 times stronger than the fatman and little boy atomic bombs used in World War II? 3. What does E=mc2 mean? 4. Does electricity in general move at the speed of light? How was fusion discovered? 5. Is it true that the sun is a ball of hydrogen that is in a fusion chain reaction? 6. How can you become a scientific worker at Fermilab? Dear Mr. Bond, I am glad you are

  16. Inquiring Minds - Questions About Physics

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

    Question About Splitting Molecules "Can you use particle accelerators to break up molecules into their elements?" The short answer is yes. The long answer is more complicated. You can think of molecules as wads of warm taffy with marbles in it (where the marbles are the atoms, and the warm taffy is what keeps them together). If you look at a marble (atom), you find that it has BB's inside, but they're held together with cold taffy (meaning they are held more firmly). If you continue to

  17. Inquiring Minds - Questions About Physics

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

    How strong is the strong force? You Wrote: How strong is the strong force? I bet you think you asked a simple question. The simple answer is that the strength depends on the range over which it is acting. At short distances the strong force is weak and at long distances it is strong. That is completely different from the other three forces and arises because the forces transmitters, called gluons, are massless and carry strong force charge. I hope that you are still interested in the more

  18. Inquiring Minds - Questions About Physics

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

    Density of the Universe Dear Quincy, Thanks for your great questions on the future of the Universe. They made me think a bit. It turns out that I am an experimental physicist at Fermilab who is presently involved with an experiment to detect the dark matter, which you also asked about. You asked: It is known that if the universe's average density is less than a critical value, it will expand forever. If the density is higher than it, the expansion will stop at sometime and the universe will

  19. Inquiring Minds - Questions About Physics

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

    Virtual Photon Question Brian, X-URL: http://www.fnal.gov/pub/hep_descript.html Dear Fermilab (or to whom this may be going to), Hi. I am 14 years old and I happen to be reading a physics book when I came across something called Virtual Photons and the uncertianty principle. The book does not explain what Virtual Photons are to well, and all I know about Photons is that they could be a wave or matter. If you could help me about what Virtual Photons are and Photons, that would be a great help.

  20. Inquiring Minds - Questions About Physics

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

    Charged Objects and Virtual Photons Hello, I am fascinated by the universe of physics, and I have a few questions. Actually, I was wondering about photons. I have come to understand that photons are the force carrying particles for the electromagnetic force. I also understand that they have no mass and can therefore travel at the speed of light. What I was wondering was this: When two electrons come near, why are real photons said to be emitted, but virtual photons are said to be the actual

  1. Inquiring Minds - Questions About Physics

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

    Can an audio wave be combined with a radio wave? You Wrote: What is the wave called when you combine an audio wave with a radio wave? Bruce Dear Bruce, It is not quite clear to me what definitions you may use for your "audio wave" and "radio wave." So let me state how I interpret your question. Audio wave: I assume you refer to a sound wave, a wave that is being transmitted through the air at the speed of sound. This wave is being transmitted through gas/liquid/matter by the

  2. Inquiring Minds - Questions About Physics

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

    Color of the Sky You asked: I was wondering what color the sky is? I know that it looks blue but what is it actually? Dear Nathalie, This is really an excellent question with a difficult answer. I had a long discussion with one of my colleagues about this topic. I'm still not sure how best to explain the science, but let me give it a try. First of all, think about all the things that can happen when light encounters an object. The light could be absorbed by the object. It might be reflected

  3. Bus bar electrical feedthrough for electrorefiner system

    DOE Patents [OSTI]

    Williamson, Mark; Wiedmeyer, Stanley G; Willit, James L; Barnes, Laurel A; Blaskovitz, Robert J

    2013-12-03

    A bus bar electrical feedthrough for an electrorefiner system may include a retaining plate, electrical isolator, and/or contact block. The retaining plate may include a central opening. The electrical isolator may include a top portion, a base portion, and a slot extending through the top and base portions. The top portion of the electrical isolator may be configured to extend through the central opening of the retaining plate. The contact block may include an upper section, a lower section, and a ridge separating the upper and lower sections. The upper section of the contact block may be configured to extend through the slot of the electrical isolator and the central opening of the retaining plate. Accordingly, relatively high electrical currents may be transferred into a glovebox or hot-cell facility at a relatively low cost and higher amperage capacity without sacrificing atmosphere integrity.

  4. Answering Key Fuel Cycle Questions

    SciTech Connect (OSTI)

    Piet, S.J.; Dixon, B.W.; Bennett, R.G.; Smith, J.D.; Hill, R.N.

    2004-10-03

    Given the range of fuel cycle goals and criteria, and the wide range of fuel cycle options, how can the set of options eventually be narrowed in a transparent and justifiable fashion? It is impractical to develop all options. We suggest an approach that starts by considering a range of goals for the Advanced Fuel Cycle Initiative (AFCI) and then posits seven questions, such as whether Cs and Sr isotopes should be separated from spent fuel and, if so, what should be done with them. For each question, we consider which of the goals may be relevant to eventually providing answers. The AFCI program has both ''outcome'' and ''process'' goals because it must address both waste already accumulating as well as completing the fuel cycle in connection with advanced nuclear power plant concepts. The outcome objectives are waste geologic repository capacity and cost, energy security and sustainability, proliferation resistance, fuel cycle economics, and safety. The process objectives are rea diness to proceed and adaptability and robustness in the face of uncertainties.

  5. Unitarity Triangle Angle Measurements at BaBar

    SciTech Connect (OSTI)

    Latham, Thomas E.; /SLAC

    2005-06-30

    We present recent results of measurements of the Unitarity Triangle angles alpha, beta and gamma made with the BaBar detector at the PEP-II asymmetric B factory. We present recent results of measurements of the Unitarity Triangle angles alpha, beta and gamma made with the BaBar detector at the PEP-II asymmetric B factory.

  6. Frequently Asked Questions (FAQs) | The Ames Laboratory

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

    Frequently Asked Questions (FAQs) Concur Travel FAQs Rental Car FAQs TSA FAQs

  7. Answering Key Fuel Cycle Questions

    SciTech Connect (OSTI)

    Steven J. Piet; Brent W. Dixon; J. Stephen Herring; David E. Shropshire; Mary Lou Dunzik-Gougar

    2003-10-01

    The Advanced Fuel Cycle Initiative (AFCI) program has both “outcome” and “process” goals because it must address both waste already accumulating as well as completing the fuel cycle in connection with advanced nuclear power plant concepts. The outcome objectives are waste geological repository capacity and cost, energy security and sustainability, proliferation resistance, fuel cycle economics, and safety. The process objectives are readiness to proceed and adaptability and robustness in the face of uncertainties. A classic decision-making approach to such a multi-attribute problem would be to weight individual quantified criteria and calculate an overall figure of merit. This is inappropriate for several reasons. First, the goals are not independent. Second, the importance of different goals varies among stakeholders. Third, the importance of different goals is likely to vary with time, especially the “energy future.” Fourth, some key considerations are not easily or meaningfully quantifiable at present. Instead, at this point, we have developed 16 questions the AFCI program should answer and suggest an approach of determining for each whether relevant options improve meeting each of the program goals. We find that it is not always clear which option is best for a specific question and specific goal; this helps identify key issues for future work. In general, we suggest attempting to create as many win-win decisions (options that are attractive or neutral to most goals) as possible. Thus, to help clarify why the program is exploring the options it is, and to set the stage for future narrowing of options, we have developed 16 questions, as follows: · What are the AFCI program goals? · Which potential waste disposition approaches do we plan for? · What are the major separations, transmutation, and fuel options? · How do we address proliferation resistance? · Which potential energy futures do we plan for? · What potential external triggers do we

  8. Inquiring Minds - Questions About Physics

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

    You Wrote: Hi, My name is Ian. I am a 12 year old student. I am in the 7th grade. My question is: If a one pound block of ice (-2 degrees C) is placed in an insulated closed room that was 2 feet by 2 feet by 4 feet, set at 5 degrees C, 1.) How long would it take to melt the ice ? 2.) How many Btu's would it take to melt the ice ? 3.) Would the room temperature drop or stay at 5 deg. C ? 4.) If electricity was used to cool the room to 5 deg. C and cost 11 cents per kWh, how much would it cost to

  9. LED Frequently Asked Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frequently Asked Questions LED Frequently Asked Questions This document provides answers to LED frequently asked questions for plant-wide improvements, such as "Are LEDs ready for general lighting?" LED Frequently Asked Questions (May 2011) (344.41 KB) More Documents & Publications LED Frequently Asked Questions Lighting Designer Roundtable on Solid-State Lighting SSL R&D Multi-Year Program Plan

  10. PP-177 Burke-Divide Electirc Cooperative, Inc | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    7 Burke-Divide Electirc Cooperative, Inc PP-177 Burke-Divide Electirc Cooperative, Inc Presidential Permit authorizing Burke-Divide Electirc Cooperative, Inc to construct, operate, and maintain electric transmission facilities at the U.S-Canadian border. PP-177 Burke-Divide Electirc Cooperative, Inc (19.37 KB) More Documents & Publications EA-177 Burke-Divide Electric Cooperative, Inc Proposed Open Access Requirement for International Electric Transmission Facilities and Delegation to the

  11. On the Verge of One Petabyte - the Story Behind the BaBar Database...

    Office of Scientific and Technical Information (OSTI)

    the Story Behind the BaBar Database System Citation Details In-Document Search Title: On the Verge of One Petabyte - the Story Behind the BaBar Database System The BaBar database ...

  12. Telescoping magnetic ball bar test gage

    DOE Patents [OSTI]

    Bryan, J.B.

    1982-03-15

    A telescoping magnetic ball bar test gage for determining the accuracy of machine tools, including robots, and those measuring machines having non-disengagable servo drives which cannot be clutched out. Two gage balls are held and separated from one another by a telescoping fixture which allows them relative radial motional freedom but not relative lateral motional freedom. The telescoping fixture comprises a parallel reed flexure unit and a rigid member. One gage ball is secured by a magnetic socket knuckle assembly which fixes its center with respect to the machine being tested. The other gage ball is secured by another magnetic socket knuckle assembly which is engaged or held by the machine in such manner that the center of that ball is directed to execute a prescribed trajectory, all points of which are equidistant from the center of the fixed gage ball. As the moving ball executes its trajectory, changes in the radial distance between the centers of the two balls caused by inaccuracies in the machine are determined or measured by a linear variable differential transformer (LVDT) assembly actuated by the parallel reed flexure unit. Measurements can be quickly and easily taken for multiple trajectories about several different fixed ball locations, thereby determining the accuracy of the machine.

  13. Telescoping magnetic ball bar test gage

    DOE Patents [OSTI]

    Bryan, J.B.

    1984-03-13

    A telescoping magnetic ball bar test gage for determining the accuracy of machine tools, including robots, and those measuring machines having non-disengageable servo drives which cannot be clutched out is disclosed. Two gage balls are held and separated from one another by a telescoping fixture which allows them relative radial motional freedom but not relative lateral motional freedom. The telescoping fixture comprises a parallel reed flexure unit and a rigid member. One gage ball is secured by a magnetic socket knuckle assembly which fixes its center with respect to the machine being tested. The other gage ball is secured by another magnetic socket knuckle assembly which is engaged or held by the machine in such manner that the center of that ball is directed to execute a prescribed trajectory, all points of which are equidistant from the center of the fixed gage ball. As the moving ball executes its trajectory, changes in the radial distance between the centers of the two balls caused by inaccuracies in the machine are determined or measured by a linear variable differential transformer (LVDT) assembly actuated by the parallel reed flexure unit. Measurements can be quickly and easily taken for multiple trajectories about several different fixed ball locations, thereby determining the accuracy of the machine. 3 figs.

  14. Telescoping magnetic ball bar test gage

    DOE Patents [OSTI]

    Bryan, James B.

    1984-01-01

    A telescoping magnetic ball bar test gage for determining the accuracy of machine tools, including robots, and those measuring machines having non-disengageable servo drives which cannot be clutched out. Two gage balls (10, 12) are held and separated from one another by a telescoping fixture which allows them relative radial motional freedom but not relative lateral motional freedom. The telescoping fixture comprises a parallel reed flexure unit (14) and a rigid member (16, 18, 20, 22, 24). One gage ball (10) is secured by a magnetic socket knuckle assembly (34) which fixes its center with respect to the machine being tested. The other gage ball (12) is secured by another magnetic socket knuckle assembly (38) which is engaged or held by the machine in such manner that the center of that ball (12) is directed to execute a prescribed trajectory, all points of which are equidistant from the center of the fixed gage ball (10). As the moving ball (12) executes its trajectory, changes in the radial distance between the centers of the two balls (10, 12) caused by inaccuracies in the machine are determined or measured by a linear variable differential transformer (LVDT) assembly (50, 52, 54, 56, 58, 60) actuated by the parallel reed flexure unit (14). Measurements can be quickly and easily taken for multiple trajectories about several different fixed ball (10) locations, thereby determining the accuracy of the machine.

  15. Numerical Simulations of the Kolsky Compression Bar Test

    SciTech Connect (OSTI)

    Corona, Edmundo

    2015-10-01

    The Kolsky compression bar, or split Hopkinson pressure bar (SHPB), is an ex- perimental apparatus used to obtain the stress-strain response of material specimens at strain rates in the order of 10 2 to 10 4 1/s. Its operation and associated data re- duction are based on principles of one-dimensional wave propagation in rods. Second order effects such as indentation of the bars by the specimen and wave dispersion in the bars, however, can significantly affect aspects of the measured material response. Finite element models of the experimental apparatus were used here to demonstrate these two effects. A procedure proposed by Safa and Gary (2010) to account for bar indentation was also evaluated and shown to improve the estimation of the strain in the bars significantly. The use of pulse shapers was also shown to alleviate the effects of wave dispersion. Combining the two can lead to more reliable results in Kolsky compression bar testing.

  16. W/Z + jets production at the tevatron {bar p}p collider (Conference...

    Office of Scientific and Technical Information (OSTI)

    Conference: WZ + jets production at the tevatron bar pp collider Citation Details In-Document Search Title: WZ + jets production at the tevatron bar pp collider You are ...

  17. J Bar L Guest Ranch Pool & Spa Low Temperature Geothermal Facility...

    Open Energy Info (EERE)

    Ranch Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name J Bar L Guest Ranch Pool & Spa Low Temperature Geothermal Facility Facility J Bar L Guest...

  18. Comments/Questions | Critical Materials Institute

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

    Comments/Questions To offer comments on the CMI website or to ask questions, please contact us: CMIdirector@ameslab.gov 515-296-4500 or use this web form for comments. Thanks!

  19. DuraMat Consortium- Frequently Asked Questions

    Broader source: Energy.gov [DOE]

    The answers to these frequently asked questions will help applicants for the DuraMat Consortium call for proposals.

  20. Questions and Answers | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Questions and Answers Questions and Answers Questions and Answers (156.86 KB) More Documents & Publications DOE HR Guidebook 12_15_05.DOC&#0; Operating Guidelines Appendix C D.DOC&#0; Revised OMB Circular A-76 (Revised November 14, 2002)

  1. Webinar: Update to the 700 bar Compressed Hydrogen Storage System...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    will present a live webinar titled "Update to the 700 bar Compressed Hydrogen Storage System Cost Projection" on Tuesday, January 26, from 12 to 1 p.m. Eastern Standard Time. ...

  2. Quarkonium Spectroscopy and New States from BaBar

    SciTech Connect (OSTI)

    Vitale, L.; /Trieste U. /INFN, Trieste

    2007-06-08

    We review results on charmonium and bottomonium spectroscopy by the BaBar experiment at the PEP-II e{sup +}e{sup -} collider at SLAC. More space is reserved to the new results like the observation of hadronic non-B{bar B} {Upsilon}(4S) decays and the investigation on the production and decay properties of the recently discovered charmonium-like states X(3872) and Y (4260). These results are preliminary, unless otherwise specified.

  3. THE MASS PROFILE AND SHAPE OF BARS IN THE SPITZER SURVEY OF STELLAR STRUCTURE IN GALAXIES (S{sup 4}G): SEARCH FOR AN AGE INDICATOR FOR BARS

    SciTech Connect (OSTI)

    Kim, Taehyun; Lee, Myung Gyoon; Sheth, Kartik; Muńoz-Mateos, Juan-Carlos; Zaritsky, Dennis; Elmegreen, Bruce G.; Athanassoula, E.; Bosma, Albert; Holwerda, Benne; Ho, Luis C.; Comerón, Sébastien; Laurikainen, Eija; Salo, Heikki; Knapen, Johan H.; Erroz-Ferrer, Santiago; Hinz, Joannah L.; Buta, Ronald J.; Kim, Minjin; Madore, Barry F.; and others

    2015-01-20

    We have measured the radial light profiles and global shapes of bars using two-dimensional 3.6 ?m image decompositions for 144 face-on barred galaxies from the Spitzer Survey of Stellar Structure in Galaxies. The bar surface brightness profile is correlated with the stellar mass and bulge-to-total (B/T) ratio of their host galaxies. Bars in massive and bulge-dominated galaxies (B/T > 0.2) show a flat profile, while bars in less massive, disk-dominated galaxies (B/T ? 0) show an exponential, disk-like profile with a wider spread in the radial profile than in the bulge-dominated galaxies. The global two-dimensional shapes of bars, however, are rectangular/boxy, independent of the bulge or disk properties. We speculate that because bars are formed out of disks, bars initially have an exponential (disk-like) profile that evolves over time, trapping more disk stars to boxy bar orbits. This leads bars to become stronger and have flatter profiles. The narrow spread of bar radial profiles in more massive disks suggests that these bars formed earlier (z > 1), while the disk-like profiles and a larger spread in the radial profile in less massive systems imply a later and more gradual evolution, consistent with the cosmological evolution of bars inferred from observational studies. Therefore, we expect that the flatness of the bar profile can be used as a dynamical age indicator of the bar to measure the time elapsed since the bar formation. We argue that cosmic gas accretion is required to explain our results on bar profile and the presence of gas within the bar region.

  4. New experimental techniques with the split Hopkinson pressure bar

    SciTech Connect (OSTI)

    Frantz, C.E.; Follansbee, P.S.; Wright, W.J.

    1984-01-01

    The split Hopkinson pressure bar or Kolsky bar has provided for many years a technique for performing compression tests at strain rates approaching 10/sup 4/ s/sup -1/. At these strain rates, the small dimensions possible in a compression test specimen give an advantage over a dynamic tensile test by allowing the stress within the specimen to equilibrate within the shortest possible time. The maximum strain rates possible with this technique are limited by stress wave propagation in the elastic pressure bars as well as in the deforming specimen. This subject is reviewed in this paper, and it is emphasized that a slowly rising excitation is preferred to one that rises steeply. Experimental techniques for pulse shaping and a numerical procedure for correcting the raw data for wave dispersion in the pressure bars are presented. For tests at elevated temperature a bar mover apparatus has been developed which effectively brings the cold pressure bars into contact with the specimen, which is heated with a specially designed furnace, shortly before the pressure wave arrives. This procedure has been used successfully in tests at temperatures as high as 1000/sup 0/C.

  5. Precision Model Independent Determination of vertical bar V{sub ub} vertical bar from B{yields}{pi}l{nu}

    SciTech Connect (OSTI)

    Arnesen, Christian M.; Stewart, Iain W.; Grinstein, Benjamin; Rothstein, Ira Z.

    2005-08-12

    A precision method for determining vertical bar V{sub ub} vertical bar using the full range in q{sup 2} of B{yields}{pi}l{nu} data is presented. At large q{sup 2} the form factor is taken from unquenched lattice QCD, at q{sup 2}=0 we impose a model independent constraint obtained from B{yields}{pi}{pi} using the soft-collinear effective theory, and the shape is constrained using QCD dispersion relations. We find vertical bar V{sub ub} vertical bar=(3.54{+-}0.17{+-}0.44)x10{sup -3}. With 5% experimental error and 12% theory error, this is competitive with inclusive methods. Theory error is dominated by the input points, with negligible uncertainty from the dispersion relations.

  6. Frequently Asked Questions Form EIA-857

    U.S. Energy Information Administration (EIA) Indexed Site

    ... For the second issue, you must carefully consider the business your customers are in. If ... This adjustment factor is the value of your pressure base at 60-degrees Fahrenheit divided ...

  7. CRAD, Facility Safety - Unreviewed Safety Question Requirements |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Facility Safety - Unreviewed Safety Question Requirements CRAD, Facility Safety - Unreviewed Safety Question Requirements A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) that can be used for assessment of a contractor's Unreviewed Safety Question (USQ) process.. CRADs provide a recommended approach and the types of information to

  8. Frequently Asked Questions | National Nuclear Security Administration |

    National Nuclear Security Administration (NNSA)

    (NNSA) Frequently Asked Questions U.S. Department of Energy / U.S. Nuclear Regulatory Commission Nuclear Materials Management & Safeguards System Frequently Asked Questions (FAQs) User Frequently Asked Questions What is the History of NMMSS? What Are the Other Uses of NMMSS? NMMSS is sponsored by the National Nuclear Security Administration's (NNSA) Office of Materials Integration within the U.S. Department of Energy and the U.S. Nuclear Regulatory Commission Learn More Users Frequently

  9. Response to Weatherization Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Response to Weatherization Questions Response to Weatherization Questions August 30, 2010 - 4:53pm Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs Last week as part of Vice President Biden's announcement of 200,000 homes weatherized under the Recovery act, we asked you to send us your questions and comments about the weatherization process. Today, we're following up with answers experts from the Department's Weatherization and Intergovernmental Program: 1) From

  10. Fermilab | Fermilab Time and Labor | Questions & Answers

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

    HTML-only Interface Questions & Answers Updated 4152014 Q: What's the story on the FTL alternative (HTML) interface? A: The HTML interface to FTLKronos has been around ever...

  11. Program Evaluation Topics and Questions Library

    Broader source: Energy.gov [DOE]

    Menu of initial questions for a program administrator to use in developing a real-time evaluation survey to collect qualitative data from program contractors.

  12. Frequently Asked Questions | Environmental Management Science...

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

    Frequently Asked Questions About the Oak Ridge Environmental Management Science Education and Internship Program 1. What kind of program is the OREM Science Education and...

  13. Cool LinksFavorite Science Questions

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

    Explore » Favorite Science Questions Favorite Science Questions The Bradbury Science Museum's Favorite Questions and Answers How can we fix the ozone layer? You asked a very interesting question about ozone and how can we fix the ozone layer. It is true that lightning creates ozone. Any spark in air will do it. Ozone can also be created by certain forms of radiation. Ozone is a molecule of oxygen that consists of three atoms instead of the usual two. It has peculiar chemical properties, it is

  14. Magnetometry of micro-magnets with electrostatically defined Hall bars

    SciTech Connect (OSTI)

    Lachance-Quirion, Dany; Camirand Lemyre, Julien; Bergeron, Laurent; Sarra-Bournet, Christian; Pioro-Ladrière, Michel

    2015-11-30

    Micro-magnets are key components for quantum information processing with individual spins, enabling arbitrary rotations and addressability. In this work, characterization of sub-micrometer sized CoFe ferromagnets is performed with Hall bars electrostatically defined in a two-dimensional electron gas. Due to the ballistic nature of electron transport in the cross junction of the Hall bar, anomalies such as the quenched Hall effect appear near zero external magnetic field, thus hindering the sensitivity of the magnetometer to small magnetic fields. However, it is shown that the sensitivity of the diffusive limit can be almost completely restored at low temperatures using a large current density in the Hall bar of about 10 A/m. Overcoming the size limitation of conventional etched Hall bars with electrostatic gating enables the measurement of magnetization curves of 440 nm wide micro-magnets with a signal-to-noise ratio above 10{sup 3}. Furthermore, the inhomogeneity of the stray magnetic field created by the micro-magnets is directly measured using the gate-voltage-dependent width of the sensitive area of the Hall bar.

  15. Measurement of the $t\\bar{t}$ production cross section using dilepton events in $p\\bar{p}$ collisions

    SciTech Connect (OSTI)

    Abazov, Victor Mukhamedovich; Abbott, Braden Keim; Acharya, Bannanje Sripath; Adams, Mark Raymond; Adams, Todd; Alexeev, Guennadi D.; Alkhazov, Georgiy D.; Alton, Andrew K.; Alverson, George O.; Alves, Gilvan Augusto; Ancu, Lucian Stefan; /Nijmegen U. /Fermilab

    2011-05-01

    We present a measurement of the t{bar t} production cross section {sigma}{sub t{bar t}} in p{bar p} collisions at {radical}s = 1.96 TeV using 5.4 fb{sup -1} of integrated luminosity collected with the D0 detector. We consider final states with at least two jets and two leptons (ee, e{mu}, {mu}{mu}), and events with one jet for the the e{mu} final state as well. The measured cross section is {sigma}{sub t{bar t}} = 7.36{sub -0.79}{sup +0.90} (stat + syst) pb. This result combined with the cross section measurement in the lepton + jets final state yields {sigma}{sub t{bar t}} = 7.56{sub -0.56}{sup +0.63}(stat + syst) pb, which agrees with the standard model expectation. The relative precision of 8% of this measurement is comparable to the latest theoretical calculations.

  16. In situ study of the R{bar 3}c-R{bar 3}m orientational disorder in calcite.

    SciTech Connect (OSTI)

    Antao, S. M.; Hassan, I.; Mulder, W. H.; Lee, P. L.; Toby, B. H.; X-Ray Science Division; Univ. of West Indies

    2009-01-01

    The temperature dependences of the crystal structure and intensities of the (113) and (211) reflections in calcite, CaCO{sub 3}, were studied using Rietveld structure refinements based on synchrotron powder X-ray diffraction data. Calcite transforms from R{bar 3}c to R{bar 3}m at about T{sub c} = 1240 K. A CO{sub 3} group occupies, statistically, two positions with equal frequency in the disordered R{bar 3}m phase, but with unequal frequency in the partially ordered R{bar 3}c phase. One position for the CO{sub 3} group is rotated by 180{sup o} with respect to the other. The unequal occupancy of the two orientations in the partially ordered R{bar 3}c phase is obtained directly from the occupancy factor, x, for the O1 site and gives rise to the order parameter, S = 2x - 1. The a cell parameter shows a negative thermal expansion at low T, followed by a plateau region at higher T, then a steeper contraction towards T{sub c}, where the CO{sub 3} groups disorder in a rapid process. Using a modified Bragg-Williams model, fits were obtained for the order parameter S, and for the intensities of the (113) and (211) reflections.

  17. STAR FORMATION IN NUCLEAR RINGS OF BARRED GALAXIES

    SciTech Connect (OSTI)

    Seo, Woo-Young; Kim, Woong-Tae E-mail: wkim@astro.snu.ac.kr

    2013-06-01

    Nuclear rings in barred galaxies are sites of active star formation. We use hydrodynamic simulations to study the temporal and spatial behavior of star formation occurring in nuclear rings of barred galaxies where radial gas inflows are triggered solely by a bar potential. The star formation recipes include a density threshold, an efficiency, conversion of gas to star particles, and delayed momentum feedback via supernova explosions. We find that the star formation rate (SFR) in a nuclear ring is roughly equal to the mass inflow rate to the ring, while it has a weak dependence on the total gas mass in the ring. The SFR typically exhibits a strong primary burst followed by weak secondary bursts before declining to very small values. The primary burst is associated with the rapid gas infall to the ring due to the bar growth, while the secondary bursts are caused by re-infall of the ejected gas from the primary burst. While star formation in observed rings persists episodically over a few Gyr, the duration of active star formation in our models lasts for only about half of the bar growth time, suggesting that the bar potential alone is unlikely to be responsible for gas supply to the rings. When the SFR is low, most star formation occurs at the contact points between the ring and the dust lanes, leading to an azimuthal age gradient of young star clusters. When the SFR is large, on the other hand, star formation is randomly distributed over the whole circumference of the ring, resulting in no apparent azimuthal age gradient. Since the ring shrinks in size with time, star clusters also exhibit a radial age gradient, with younger clusters found closer to the ring. The cluster mass function is well described by a power law, with a slope depending on the SFR. Giant gas clouds in the rings have supersonic internal velocity dispersions and are gravitationally bound.

  18. Solar Instructor Training Network Frequently Asked Questions

    Broader source: Energy.gov [DOE]

    These frequently asked questions (FAQs) relate to the solar instructor training network. This project was launched by the U.S. Department of Energy (DOE) Solar Energy Technologies Program (SETP or...

  19. UESC Frequently Asked Questions Panel Discussion

    Broader source: Energy.gov [DOE]

    Presentation—given at the April 2012 Federal Utility Partnership Working Group (FUPWG) meeting—covers frequently asked questions (FAQs) about utility energy service contracts (UESCs), including term lengths, bonding, and a UESC within a utility's service territory.

  20. Frequently Asked Questions | National Nuclear Security Administration...

    National Nuclear Security Administration (NNSA)

    Frequently Asked Questions General What is a demonstration project? What employees are affected by the pay-banding and pay-for-performance demonstration project? When was pay-banding ...

  1. Program Evaluation: Define Questions and Methods

    Broader source: Energy.gov [DOE]

    Steps five through eight will help you define the questions your evaluation should address, and develop the methods you'll use to conduct your evaluation (learn more about the other steps in...

  2. Special Feature: Five Questions for Sudip Dosanjh

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

    Five Questions for Sudip Dosanjh Special Feature: Five Questions for Sudip Dosanjh September 27, 2013 Sudip-wide.jpg Sudip Dosanjh Sudip Dosanjh is Director of the National Energy Research Scientific Computing (NERSC) Center at Lawrence Berkeley National Laboratory. NERSC's mission is to accelerate scientific discovery at the U.S. Department of Energy's Office of Science through high performance computing and extreme data analysis. NERSC deploys leading-edge computational and data resources for

  3. Summary of Questions, Answers and Comments

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Meeting: Data/Communication Standards and Interoperability of Building Appliances, Equipment, and Systems Summary of Questions, Answers and Comments in the Discussion Periods Following Presentations Presentation: Introductions and purpose (Joe Hagerman) Question (Q): What is the difference between the April 30 public meeting and this non-public meeting? What is the end goal / end game / timeline? Answer (A): DOE is hosting a series of meetings to ensure we've done our due diligence before we

  4. Cybersecurity Capability Maturity Model - Frequently Asked Questions

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (February 2014) | Department of Energy - Frequently Asked Questions (February 2014) Cybersecurity Capability Maturity Model - Frequently Asked Questions (February 2014) The Cybersecurity Capability Maturity Model (C2M2) program is intended to aid organizations of all types evaluate and make improvements to their cybersecurity programs. The model focuses on the implementation and management of cybersecurity practices associated with the information technology (IT) and operational technology

  5. Production of BaBar Skimmed Analysis Datasets Using the Grid...

    Office of Scientific and Technical Information (OSTI)

    Production of BaBar Skimmed Analysis Datasets Using the Grid Citation Details In-Document Search Title: Production of BaBar Skimmed Analysis Datasets Using the Grid You are ...

  6. Searches for Light New Physics at BaBar (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Conference: Searches for Light New Physics at BaBar Citation Details In-Document Search Title: Searches for Light New Physics at BaBar Authors: ...

  7. Flow-Based Detection of Bar Coded Particles (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Flow-Based Detection of Bar Coded Particles Citation Details In-Document Search Title: Flow-Based Detection of Bar Coded Particles We have developed methods for flow control, ...

  8. Study of the Decays of Charm Mesons With the BaBar Experiment...

    Office of Scientific and Technical Information (OSTI)

    Study of the Decays of Charm Mesons With the BaBar Experiment Citation Details In-Document Search Title: Study of the Decays of Charm Mesons With the BaBar Experiment You are ...

  9. Optimizing Parallel Access to the BaBar Database System Using...

    Office of Scientific and Technical Information (OSTI)

    Optimizing Parallel Access to the BaBar Database System Using CORBA Servers Citation Details In-Document Search Title: Optimizing Parallel Access to the BaBar Database System Using ...

  10. Bottomonium Spectroscopy at BaBar and Belle (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Bottomonium Spectroscopy at BaBar and Belle Citation Details In-Document Search Title: Bottomonium Spectroscopy at BaBar and Belle You are accessing a document from the ...

  11. From Question Answering to Visual Exploration

    SciTech Connect (OSTI)

    McColgin, Dave W.; Gregory, Michelle L.; Hetzler, Elizabeth G.; Turner, Alan E.

    2006-08-11

    Research in Question Answering has focused on the quality of information retrieval or extraction using the metrics of precision and recall to judge success; these metrics drive toward finding the specific best answer(s) and are best supportive of a lookup type of search. These do not address the opportunity that users? natural language questions present for exploratory interactions. In this paper, we present an integrated Question Answering environment that combines a visual analytics tool for unstructured text and a state-of-the-art query expansion tool designed to compliment the cognitive processes associated with an information analysts work flow. Analysts are seldom looking for factoid answers to simple questions; their information needs are much more complex in that they may be interested in patterns of answers over time, conflicting information, and even related non-answer data may be critical to learning about a problem or reaching prudent conclusions. In our visual analytics tool, questions result in a comprehensive answer space that allows users to explore the variety within the answers and spot related information in the rest of the data. The exploratory nature of the dialog between the user and this system requires tailored evaluation methods that better address the evolving user goals and counter cognitive biases inherent to exploratory search tasks.

  12. Spreader-Bar Radiation Detection System Enhancements: A Modeling and Simulation Study

    SciTech Connect (OSTI)

    Ely, James H.; Ashbaker, Eric D.; Batdorf, Michael T.; Baciak, James E.; Hensley, Walter K.; Jarman, Kenneth D.; Robinson, Sean M.; Sandness, Gerald A.; Schweppe, John E.

    2012-11-13

    This report provides the modeling and simulation results of the investigation of enhanced spreader bar radiation detection systems.

  13. Ian Hinchliffe Answers Your Higgs Boson Questions

    ScienceCinema (OSTI)

    Hinchliffe, Ian

    2013-05-29

    contingent with the ATLAS experiment at CERN, answers many of your questions about the Higgs boson. Ian invited viewers to send in questions about the Higgs via email, Twitter, Facebook, or YouTube in an "Ask a Scientist" video posted July 3: http://youtu.be/xhuA3wCg06s CERN's July 4 announcement that the ATLAS and CMS experiments at the Large Hadron Collider have discovered a particle "consistent with the Higgs boson" has raised questions about what scientists have found and what still remains to be found -- and what it all means. If you have suggestions for future "Ask a Scientist" videos, post them below or send ideas to askascientist@lbl.gov

  14. Ian Hinchliffe Answers Your Higgs Boson Questions

    SciTech Connect (OSTI)

    Hinchliffe, Ian

    2012-01-01

    contingent with the ATLAS experiment at CERN, answers many of your questions about the Higgs boson. Ian invited viewers to send in questions about the Higgs via email, Twitter, Facebook, or YouTube in an "Ask a Scientist" video posted July 3: http://youtu.be/xhuA3wCg06s CERN's July 4 announcement that the ATLAS and CMS experiments at the Large Hadron Collider have discovered a particle "consistent with the Higgs boson" has raised questions about what scientists have found and what still remains to be found -- and what it all means. If you have suggestions for future "Ask a Scientist" videos, post them below or send ideas to askascientist@lbl.gov

  15. Frequently Asked Questions | The Ames Laboratory

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

    Frequently Asked Questions Question - Where can I find who has signature authority for a specific project? Answer - The appropriate signature authority for purchase order requisitions and service work can be determined by using the Ames Laboratory Chart of Accounts. The current Chart of Accounts information can be found on the Moderate file server at Team\COA. * The current fiscal year files (COA.xls and COAintro.doc) are in the directory named COA * Prior fiscal year COA files are located in a

  16. Variable-geometry turbocharger with asymmetric divided volute for engine exhaust gas pulse optimization

    DOE Patents [OSTI]

    Serres, Nicolas

    2010-11-09

    A turbine assembly for a variable-geometry turbocharger includes a turbine housing defining a divided volute having first and second scrolls, wherein the first scroll has a substantially smaller volume than the second scroll. The first scroll feeds exhaust gas to a first portion of a turbine wheel upstream of the throat of the wheel, while the second scroll feeds gas to a second portion of the wheel at least part of which is downstream of the throat. Flow from the second scroll is regulated by a sliding piston. The first scroll can be optimized for low-flow conditions such that the turbocharger can operate effectively like a small fixed-geometry turbocharger when the piston is closed. The turbine housing defines an inlet that is divided by a dividing wall into two portions respectively feeding gas to the two scrolls, a leading edge of the dividing wall being downstream of the inlet mouth.

  17. Beam Dynamics Studies of Parallel-Bar Deflecting Cavities

    SciTech Connect (OSTI)

    S. Ahmed, G. Krafft, K. Detrick, S. Silva, J. Delayen, M. Spata ,M. Tiefenback, A. Hofler ,K. Beard

    2011-03-01

    We have performed three-dimensional simulations of beam dynamics for parallel-bar transverse electromagnetic mode (TEM) type RF separators: normal- and super-conducting. The compact size of these cavities as compared to conventional TM$_{110}$ type structures is more attractive particularly at low frequency. Highly concentrated electromagnetic fields between the parallel bars provide strong electrical stability to the beam for any mechanical disturbance. An array of six 2-cell normal conducting cavities or a one- or two-cell superconducting structure are enough to produce the required vertical displacement at the Lambertson magnet. Both the normal and super-conducting structures show very small emittance dilution due to the vertical kick of the beam.

  18. Combined method for simultaneously dewatering and reconstituting finely divided carbonaceous material

    DOE Patents [OSTI]

    Wen, Wu-Wey (Murrysville, PA); Deurbrouck, Albert W. (Pittsburgh, PA)

    1990-01-01

    A finely-divided carbonaceous material is dewatered and reconstituted in a combined process by adding a binding agent directly into slurry of finely divided material and dewatering the material to form a cake or consolidated piece which can be hardened by drying at ambient or elevated temperatures. Alternatively, the binder often in the form of a crusting agent is sprayed onto the surface of a moist cake prior to curing.

  19. Combined uranous nitrate production consisting of undivided electrolytic cell and divided electrolytic cell (Electrolysis ? Electrolytic cell)

    SciTech Connect (OSTI)

    Yuan, Zhongwei; Yan, Taihong; Zheng, Weifang; Li, Xiaodong; Yang, Hui; Xian, Liang

    2013-07-01

    The electrochemical reduction of uranyl nitrate is a green, mild way to make uranous ions. Undivided electrolyzers whose maintenance is less but their conversion ratio and current efficiency are low, have been chosen. However, at the beginning of undivided electrolysis, high current efficiency can also be maintained. Divided electrolyzers' conversion ratio and current efficiency is much higher because the re-oxidation of uranous on anode is avoided, but their maintenance costs are more, because in radioactive environment the membrane has to be changed after several operations. In this paper, a combined method of uranous production is proposed which consists of 2 stages: undivided electrolysis (early stage) and divided electrolysis (late stage) to benefit from the advantages of both electrolysis modes. The performance of the combined method was tested. The results show that in combined mode, after 200 min long electrolysis (80 min undivided electrolysis and 120 min divided electrolysis), U(IV) yield can achieve 92.3% (500 ml feed, U 199 g/l, 72 cm{sup 2} cathode, 120 mA/cm{sup 2}). Compared with divided mode, about 1/3 working time in divided electrolyzer is reduced to achieve the same U(IV) yield. If 120 min long undivided electrolysis was taken, more than 1/2 working time can be reduced in divided electrolyzer, which means that about half of the maintenance cost can also be reduced. (authors)

  20. Calibration of a Hopkinson bar with a transfer standard

    SciTech Connect (OSTI)

    Bateman, V.I.; Leisher, W.B.; Brown, F.A.; Davie, N.T.

    1991-01-01

    During the past year, program field test temperatures, that are beyond the test accelerometer operational limits of {minus}30{degrees}F and +150{degrees}F, required the calibration of accelerometers at high shock levels and at the temperature extremes of {minus}50{degrees}F and +160{degrees}F. The purposes of these calibrations were to insure the accelerometers operated at the field test temperatures and to provide an accelerometer sensitivity at each test temperature. Since there is no NIST-traceable (National Institute of Standards and Technology traceable) calibration capability at shock levels of 5,000g--15,000g for the temperature extremes of {minus}50{degrees}F and +160{degrees}F, a method for calibrating and certifying the Hopkinson bar with a transfer standard was developed. Time domain and frequency domain results are given that characterize the Hopkinson bar. The NIST accuracy for the standard accelerometer in shock is {plus minus}5%. The Hopkinson bar has been certified by the Sandia Secondary Standards Division with an uncertainty of 6%. 12 refs., 5 figs.

  1. Automatic ball bar for a coordinate measuring machine

    DOE Patents [OSTI]

    Jostlein, H.

    1997-07-15

    An automatic ball bar for a coordinate measuring machine determines the accuracy of a coordinate measuring machine having at least one servo drive. The apparatus comprises a first and second gauge ball connected by a telescoping rigid member. The rigid member includes a switch such that inward radial movement of the second gauge ball relative to the first gauge ball causes activation of the switch. The first gauge ball is secured in a first magnetic socket assembly in order to maintain the first gauge ball at a fixed location with respect to the coordinate measuring machine. A second magnetic socket assembly secures the second gauge ball to the arm or probe holder of the coordinate measuring machine. The second gauge ball is then directed by the coordinate measuring machine to move radially inward from a point just beyond the length of the ball bar until the switch is activated. Upon switch activation, the position of the coordinate measuring machine is determined and compared to known ball bar length such that the accuracy of the coordinate measuring machine can be determined. 5 figs.

  2. Automatic ball bar for a coordinate measuring machine

    DOE Patents [OSTI]

    Jostlein, Hans

    1997-01-01

    An automatic ball bar for a coordinate measuring machine determines the accuracy of a coordinate measuring machine having at least one servo drive. The apparatus comprises a first and second gauge ball connected by a telescoping rigid member. The rigid member includes a switch such that inward radial movement of the second gauge ball relative to the first gauge ball causes activation of the switch. The first gauge ball is secured in a first magnetic socket assembly in order to maintain the first gauge ball at a fixed location with respect to the coordinate measuring machine. A second magnetic socket assembly secures the second gauge ball to the arm or probe holder of the coordinate measuring machine. The second gauge ball is then directed by the coordinate measuring machine to move radially inward from a point just beyond the length of the ball bar until the switch is activated. Upon switch activation, the position of the coordinate measuring machine is determined and compared to known ball bar length such that the accuracy of the coordinate measuring machine can be determined.

  3. 10 Questions for a Physicist: Antonio Checco

    Office of Energy Efficiency and Renewable Energy (EERE)

    Today, the Energy Blog is launching a new series, 10 Questions, with a simple goal in mind – to introduce you to our scientists and their incredible work. Dr. Checco explains wetting on the nanoscale, shares some advice for students and tells us about his favorite movie scientist.

  4. Treatment of Anthrax Disease Frequently Asked Questions

    SciTech Connect (OSTI)

    Judd, Kathleen S.; Young, Joan E.; Lesperance, Ann M.; Malone, John D.

    2010-05-14

    This document provides a summary of Frequently Asked Questions (FAQs) on the treatment of anthrax disease caused by a wide-area release of Bacillus anthracis spores as an act bioterrorism. These FAQs are intended to provide the public health and medical community, as well as others, with guidance and communications to support the response and long-term recovery from an anthrax event.

  5. Division Postdoctoral Appointments Frequently Asked Questions | Argonne

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

    National Laboratory Division Postdoctoral Appointments Frequently Asked Questions Are the Division Postdoctoral Appointments the same as "Regular Postdocs"? Yes. Who chooses the final candidate; DEP, the sub-committee, or the programmatic Division? The programmatic Division does. The sub-committee reviews the final candidate's application package to ensure that he or she complies with Argonne 's high standards and that all the requirements have been met. If the candidate has

  6. Frequently Asked Questions | netl.doe.gov

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

    Frequently Asked Questions Is US citizenship required? Yes. US citizenship is required for all federal vacancies. Am I eligible to apply for the All Sources, the Government-Wide, or should I apply for both announcements? All Sources: These vacancies are open to any US citizen or applicant eligible under the Government-wide area of consideration. Government-Wide: These vacancies are only open to Federal career/career conditional employees in the competitive service and Veterans who have

  7. NETL CO2 Storage Frequently Asked Questions

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

    CO2 Storage Frequently Asked Questions faq-header-big.jpg A combined portfolio of carbon management options for fossil fuel use can be implemented to manage current emission levels of greenhouse gases (GHGs) while enhancing energy security and building the technologies and knowledge base for export to other countries faced with reducing emissions. The U.S. portfolio includes Use of fuels with reduced carbon intensity: renewables, nuclear, and natural gas. Adoption of more efficient technologies

  8. Frequently Asked Questions | National Nuclear Security Administration |

    National Nuclear Security Administration (NNSA)

    (NNSA) Frequently Asked Questions Clearance Processing: How long does it take to get a clearance? Timeframes may vary depending on the level of clearance, type of background investigation, and complexity of the case. What would cause my clearance to be delayed? Reasons for a delay in the processing of a clearance can be attributed to both the investigative process as well as the adjudicative process. The investigation process can be delayed if it requires extensive efforts in pursuit of

  9. SCE Responses to Customer Data Questions

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SCE Responses to Customer Data Questions 1. Who owns energy consumption data? SCE Response: Customer-specific data gathered or developed by a utility in the course of providing utility services is owned by the utility. Such data is subject to confidentiality and privacy requirements. In California, customers have the right to access their customer- specific information and can authorize third-party access to their information. 2. Who should be entitled to privacy protections relating to energy

  10. Hanford Story: Groundwater - Questions - Hanford Site

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

    The Hanford Story Hanford Story: Groundwater - Questions The Hanford Story Email Email Page | Print Print Page | Text Increase Font Size Decrease Font Size How did contamination get into the groundwater beneath the Hanford Site? What has caused the level of contamination to decrease over the years? What is the 2015 vision for Hanford? What is the goal of the water treatment systems and facilities? What is being done to treat groundwater to remove contamination? Is contaminated groundwater

  11. Protein-folding via divide-and-conquer optimization (Conference) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Protein-folding via divide-and-conquer optimization Citation Details In-Document Search Title: Protein-folding via divide-and-conquer optimization Authors: Oliva, Ricardo ; Crivelli, Silvia ; Meza, Juan Publication Date: 2004-07-11 OSTI Identifier: 882903 Report Number(s): LBNL--55869 R&D Project: 365969; BnR: YN0100000 DOE Contract Number: DE-AC02-05CH11231 Resource Type: Conference Resource Relation: Conference: SIAM Conference on the Life Sciences, Portland,OR, July 11-14,

  12. Natural Gas from Shale: Questions and Answers | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Shale: Questions and Answers Natural Gas from Shale: Questions and Answers Natural Gas from Shale: Questions and Answers (12.62 MB) More Documents & Publications Shale Gas Development Challenges: Fracture Fluids Shale Gas Glossary How is shale gas produced?

  13. Rare Decays And Exotic States With BaBar

    SciTech Connect (OSTI)

    Robertson, S.H.; /McGill U.

    2006-08-28

    Results from the BABAR experiment are presented for searches for several rare FCNC B and D meson decays, including the modes B{sup 0} {yields} {ell}{sup +}{ell}{sup -} and D{sup 0} {yields} {ell}{sup +}{ell}{sup -}, B {yields} ({rho},{omega}){gamma} and B{sup +} {yields} (K,{pi}){sup +}{nu}{bar {nu}}. Limits on lepton flavor violation in neutrino-less {tau} decays are also discussed. Finally, results of BABAR searches for the strange pentaquark states {Theta}{sup +}(1540), {Xi}{sup --}(1860) and {Xi}{sup 0}(1860) are summarized.

  14. Davis Bacon Frequently Asked Questions (FAQs) | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Davis Bacon Frequently Asked Questions (FAQs) Davis Bacon Frequently Asked Questions (FAQs) PDF icon DBA FAQs More Documents & Publications Davis-Bacon Act - Under the American...

  15. Questions and Answers for the Smart Grid Investment Grant Program...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Meter Installations Questions and Answers for the Smart Grid Investment Grant Program: Reporting of Meter Installations Questions and answers related to the reporting of meter ...

  16. A Scientist Answers Your Battery Questions - Joint Center for...

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

    A Scientist Answers Your Battery Questions Venkat Srinivasan, JCESR Deputy Director of Integration, answers several of your questions about the future of battery research. Check it ...

  17. Frequently Asked Questions on Filing EISs with EPA's Office of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Frequently Asked Questions on Filing EISs with EPA's Office of Federal Activities (EPA, 1994) Frequently Asked Questions on Filing EISs with EPA's Office of Federal Activities (EPA, ...

  18. Berkeley Lab Answers Your Home Energy Efficiency Questions (Other...

    Office of Scientific and Technical Information (OSTI)

    Other: Berkeley Lab Answers Your Home Energy Efficiency Questions Citation Details In-Document Search Title: Berkeley Lab Answers Your Home Energy Efficiency Questions In this ...

  19. Electric Vehicle Deployment: Policy Questions and Impacts to...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Vehicle Deployment: Policy Questions and Impacts to the U.S. Electric Grid - EAC Recommendations (November 2011) Electric Vehicle Deployment: Policy Questions and Impacts to the ...

  20. NORTHEAST HOME HEATING OIL RESERVE (NEHHOR) QUESTIONS AND ANSWERS

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Questions and Answers document is a compilation of the most commonly asked questions (and answers) concerning the online auction system for the Northeast Home Heating Oil Reserve.

  1. Questions and Answers for the Smart Grid Investment Grant Program...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Buy American Questions and Answers for the Smart Grid Investment Grant Program: Buy American Additional questions and answers from recipients of awards under the Smart Grid ...

  2. EERE Digital Data Management Frequently Asked Questions | Department...

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

    Frequently Asked Questions EERE Digital Data Management Frequently Asked Questions Submitting a Data Management Plan 1. I am submitting an applicationproposal for research funding ...

  3. Questions and Answers for the Smart Grid Investment Grant Program...

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

    Additional questions and answers from recipients of awards under the Smart Grid Investment Grant Program of the American Recovery and Reinvestment Act. Questions excerpted from...

  4. "Frequently Asked Questions" on the Department of Energy's NEPA...

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

    regarding DOE's NEPA implementation regulations. Revised "Frequently Asked Questions on the Department of Energy's NEPA Regulations More Documents & Publications Questions and...

  5. Quantifying and Mapping the Digital Divide from an Internet Point of View

    SciTech Connect (OSTI)

    Cottrell, R.Les; Khan, Shahryar; Williams, Jerrod; Mehdi, Akbar; Kalim, Umar; Ali, Arshad; /NUST, Rawalpindi

    2008-09-18

    Quantitative knowledge of the magnitude, extent and trends of the Digital Divide are critical to understand and identify the regions most in need of help, to make rational decisions on how to address the problems and to make cases for executives, funding agencies and politicians. We report on a project (PingER) to measure the Digital Divide from the point of view of Internet performance. The PingER project has been measuring Internet performance since 1995 and with the increased emphasis on measuring and tracking the Digital Divide, it now covers over 700 hosts in over 150 countries that between them contain over 99% of the world's Internet connected population. In this paper we will describe the how PingER works, it deployment, the data analysis, and presentation. We also introduce a new PingER visualization tool (ViPER) that provides a more appealing interactive visualization of the PingER data and also works on mobile PDAs. We will also show results from PingER that illustrate the magnitude, extent and trends for the Digital Divide, and also compare PingER results with some human development and technology indices.

  6. Particle-in-cell simulations of electron beam control using an inductive current divider

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Swanekamp, S. B.; Angus, J. R.; Cooperstein, G.; Ottinger, P. F.; Richardson, A. S.; Schumer, J. W.; Weber, B. V.

    2015-11-18

    Kinetic, time-dependent, electromagnetic, particle-in-cell simulations of the inductive current divider are presented. The inductive current divider is a passive method for controlling the trajectory of an intense, hollow electron beam using a vacuum structure that inductively splits the beam’s return current. The current divider concept was proposed and studied theoretically in a previous publication [Phys. Plasmas 22, 023107 (2015)] A central post carries a portion of the return current (I1) while the outer conductor carries the remainder (I2) with the injected beam current given by Ib=I1+I2. The simulations are in agreement with the theory which predicts that the total forcemore » on the beam trajectory is proportional to (I2-I1) and the force on the beam envelope is proportional to Ib. For a fixed central post, the beam trajectory is controlled by varying the outer conductor radius which changes the inductance in the return-current path. The simulations show that the beam emittance is approximately constant as the beam propagates through the current divider to the target. As a result, independent control over both the current density and the beam angle at the target is possible by choosing the appropriate return-current geometry.« less

  7. Investigation about decoupling capacitors of PMT voltage divider effects on neutron-gamma discrimination

    SciTech Connect (OSTI)

    Divani, Nazila Firoozabadi, Mohammad M.; Bayat, Esmail

    2014-11-24

    Scintillators are almost used in any nuclear laboratory. These detectors combine of scintillation materials, PMT and a voltage divider. Voltage dividers are different in resistive ladder design. But the effect of decoupling capacitors and damping resistors haven’t discussed yet. In this paper at first a good equilibrium circuit designed for PMT, and it was used for investigating about capacitors and resistors in much manner. Results show that decoupling capacitors have great effect on PMT output pulses. In this research, it was tried to investigate the effect of Capacitor’s value and places on PMT voltage divider in Neutron-Gamma discrimination capability. Therefore, the voltage divider circuit for R329-02 Hamamatsu PMT was made and Zero Cross method used for neutron-gamma discrimination. The neutron source was a 20Ci Am-Be. Anode and Dynode pulses and discrimination spectrum were saved. The results showed that the pulse height and discrimination quality change with the value and setting of capacitors.

  8. Particle-in-cell simulations of electron beam control using an inductive current divider

    SciTech Connect (OSTI)

    Swanekamp, S. B.; Angus, J. R.; Cooperstein, G.; Ottinger, P. F.; Richardson, A. S.; Schumer, J. W.; Weber, B. V.

    2015-11-18

    Kinetic, time-dependent, electromagnetic, particle-in-cell simulations of the inductive current divider are presented. The inductive current divider is a passive method for controlling the trajectory of an intense, hollow electron beam using a vacuum structure that inductively splits the beam’s return current. The current divider concept was proposed and studied theoretically in a previous publication [Phys. Plasmas 22, 023107 (2015)] A central post carries a portion of the return current (I1) while the outer conductor carries the remainder (I2) with the injected beam current given by Ib=I1+I2. The simulations are in agreement with the theory which predicts that the total force on the beam trajectory is proportional to (I2-I1) and the force on the beam envelope is proportional to Ib. For a fixed central post, the beam trajectory is controlled by varying the outer conductor radius which changes the inductance in the return-current path. The simulations show that the beam emittance is approximately constant as the beam propagates through the current divider to the target. As a result, independent control over both the current density and the beam angle at the target is possible by choosing the appropriate return-current geometry.

  9. Frequently Asked Questions | National Nuclear Security Administration |

    National Nuclear Security Administration (NNSA)

    (NNSA) Frequently Asked Questions General What is a demonstration project? What employees are affected by the pay-banding and pay-for-performance demonstration project? When was pay-banding implemented? What is the duration of the demonstration project? What happens after 5 years? What is the process for converting employees from the pay-banding system back to the General Schedule system (in the event of a transfer to another federal agency)? What is a share? What occupational series will be

  10. Hanford Story: Future - Questions - Hanford Site

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

    The Hanford Story Hanford Story: Future - Questions The Hanford Story Email Email Page | Print Print Page | Text Increase Font Size Decrease Font Size What possibilities do you see for future uses of the Hanford Site? What potential uses do the community surrounding Hanford envision for areas of land on the site? Why is land on the Hanford Site important to the local tribes? How much of the site is potentially available for future uses? What were some of the potential uses mentioned in the