National Library of Energy BETA

Sample records for b-100 bone-equivalent plastic

  1. Percentage depth dose distributions in inhomogeneous phantoms with lung and bone equivalent media for small fields of CyberKnife

    E-Print Network [OSTI]

    Lee, Chung Il; Yoon, Sei-Chul; Suh, Tae Suk; Hong, Seung-Woo; Min, Kyung Joo; Lee, Sang Deok; Chung, Su Mi; Jung, Jae-Yong

    2014-01-01

    The percentage depth dose distributions in inhomogeneous phantoms with lung and bone equivalent media are studied. For lung equivalent media a Balsa wood is used, and for a soft bone equivalent media a compound material with epoxy resin, hardener and calcium carbonate is used. Polystyrene slabs put together with these materials are used as an inhomogeneous phantom. Dose measurements are performed with Gafchromic EBT film by using photon beams from 6MV CyberKnife at the Seoul Uridul Hospital. The cone sizes of the photon beams are varied from 5, 10 to 30 mm. As a simulation tool GEANT4 Monte Carlo code v9.4.p02 is used. When the Balsa wood is inserted in the phantom, the dose measured with EBT film is found to be significantly different from the dose without the EBT film in and beyond the Balsa wood region, particularly for small field sizes. On the other hand, when the soft bone equivalent material is inserted in the phantom, discrepancy between the dose measured with EBT film and the dose without EBT film ca...

  2. Results of the 2007 B100 Quality Survey

    SciTech Connect (OSTI)

    Alleman, T. L.; McCormick, R. L.

    2008-03-01

    In a 2007 analysis of samples from 52% of U.S. biodiesel (B100) producers, 90% met ASTM and other specifications for critical engine performance properties and for elements that harm emission controls.

  3. 2006 B100 Quality Survey Results: Milestone Report

    SciTech Connect (OSTI)

    Alleman, T. L.; McCormick, R. L.; Deutch, S.

    2007-05-01

    In 2006, the National Renewable Energy Laboratory conducted a nationwide quality survey of pure biodiesel (B100) intended to be used as a blendstock. The study collected random samples throughout the United States and analyzed them for quality against the current and proposed ASTM D6751 fuel quality specifications.

  4. S M Stoller Star Center-B100

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4227STAR Center-B100

  5. ASL & Plasticity Plasticity

    E-Print Network [OSTI]

    Coulson, Seana

    ASL & Plasticity #12;Plasticity Plasticity From Wikipedia, the free encyclopedia Plasticity has four meanings: · Plasticity (physics): In physics and engineering, plasticity is the propensity of a material to undergo permanent deformation under load. · Phenotypic plasticity: Describes the degree

  6. Advantages of Biofuels B100 biodiesel has many benefits over traditional, petroleum-based

    E-Print Network [OSTI]

    Advantages of Biofuels B100 biodiesel has many benefits over traditional, petroleum-based diesel-produced biofuels. Environmental & Social Benefits Decreases emissions of fossil fuels that contribute to climate-powered vessel fleet to biofuels and bio-lubricants. This effort produced the first federal vessel to run

  7. Plastic Bronchitis

    E-Print Network [OSTI]

    Quysner, Annie; Surani, Salim; Roberts, Daniel

    2011-01-01

    al. Three children with plastic bronchitis associated within E mergency M edicine Plastic Bronchitis Annie Quysner, MDElshami AA, Kang DS, et al. Plastic Bronchitis. Eur Resp J

  8. S M Stoller Star Center-B100 Monthly/Effluent; Largo, FL

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4227STARB1001/06B100

  9. S M Stoller Star Center-B100 Monthly/Effluent; Largo, FL

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the WeldonB100 Monthly/Effluent; Largo, FL 7030-226

  10. Plastic Containers 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    strategy to mitigate environmental variation is phenotypic plasticity: the production of alternative phenotypes in response to environmental variation. Phenotypic plasticity yields multiple characters that may enable organisms to better optimize phenotypic...

  11. Performance and Emissions Characteristics of Bio-Diesel (B100)-Ignited Methane and Propane Combustion in a Four Cylinder Turbocharged Compression Ignition Engine

    SciTech Connect (OSTI)

    Shoemaker, N. T.; Gibson, C. M.; Polk, A. C.; Krishnan, S. R.; Srinivasan, K. K.

    2011-10-05

    Different combustion strategies and fuel sources are needed to deal with increasing fuel efficiency demands and emission restrictions. One possible strategy is dual fueling using readily available resources. Propane and natural gas are readily available with the current infrastructure and biodiesel is growing in popularity as a renewable fuel. This paper presents experimental results from dual fuel combustion of methane (as a surrogate for natural gas) and propane as primary fuels with biodiesel pilots in a 1.9 liter, turbocharged, 4 cylinder diesel engine at 1800 rev/min. Experiments were performed with different percentage energy substitutions (PES) of propane and methane and at different brake mean effective pressures (BMEP/bmep). Brake thermal efficiency (BTE) and emissions (NOx, HC, CO, CO2, O2 and smoke) were also measured. Maximum PES levels for B100-methane dual fuelling were limited to 70% at 2.5 bar bmep and 48% at 10 bar bmep, and corresponding values for B100-propane dual fuelling were 64% and 43%, respectively. Maximum PES was limited by misfire at 2.5 bar bmep and the onset of engine knock at 10 bar bmep. Dual fuel BTEs approached straight B100 values at 10 bar bmep while they were significantly lower than B100 values at 2.5 bar bmep. In general dual fuelling was beneficial in reducing NOx and smoke emissions by 33% and 50%, respectively from baseline B100 levels; however, both CO and THC emissions were significantly higher than baseline B100 levels at all PES and loads.

  12. Epigenetics and Developmental Plasticity

    E-Print Network [OSTI]

    Champagne, Frances A.

    Epigenetics and Developmental Plasticity Across Species ABSTRACT: Plasticity is a typical feature in developmental plasticity. Thus, in the context of the concept of developmental homology, epigenetic mechanisms, and plasticity which may contribute to our understanding of the homology that exists between species and between

  13. MECS 2006- Plastics

    Broader source: Energy.gov [DOE]

    Manufacturing Energy and Carbon Footprint for Plastics (NAICS 326) Sector with Total Energy Input, October 2012 (MECS 2006)

  14. COVARIANCE PLASTICITY AND REGULATED CRITICALITY

    E-Print Network [OSTI]

    Lehmann, Daniel

    COVARIANCE PLASTICITY AND REGULATED CRITICALITY Elie Bienenstock Division of Applied Mathematics plasticity may cause the brain to operate near criticality. We analyze the effect of such a regulation of Hebbian covariance plasticity. Such a regulation may bring the system near criticality. We suggest

  15. 2015 PLASTIC SURGERY VISITING PROFESSOR

    E-Print Network [OSTI]

    Shoubridge, Eric

    2015 PLASTIC SURGERY VISITING PROFESSOR Dr. MichaelW. Neumeister June 25th 2015 McGill University Division of Plastic Surgery #12;PROGRAM THURSDAY, JUNE 25th 2015 7:30 am OSLER AMPHITHEATRE ­ MONTREAL-102 Research Presentations ­ Residents & Graduate Students in Plastic Surgery 10:15 am Coffee Break 10:30 am

  16. Rinse food containers. PLASTIC CONTAINERS

    E-Print Network [OSTI]

    Arnold, Elizabeth A.

    Rinse food containers. PLASTIC CONTAINERS PLASTIC BOTTLES & BOTTLE CAPS PLASTIC CUPS EXCEPT FOAM - www.jmu.edu/stewardship JMU WASTE BIN GUIDE Food residue, liquids and trash contaminate the recycling & Student Center: FOOD WASTE · NAPKINS · PAPER TOWELS Deposit these JMU Dining & Catering items in marked

  17. Adaptive Plasticity and Plasticity as an Adaptation: A Selective Review of Plasticity in Animal Morphology and Life History

    E-Print Network [OSTI]

    Gotthard, Karl

    Adaptive Plasticity and Plasticity as an Adaptation: A Selective Review of Plasticity in Animal wide-ranging. All key REVIEW references should be cited. A summary is required. Adaptive plasticity and plasticity as an adaptation: a selective review of plasticity in animal morphology and life history Karl

  18. Microelectronics plastic molded packaging

    SciTech Connect (OSTI)

    Johnson, D.R.; Palmer, D.W.; Peterson, D.W.

    1997-02-01

    The use of commercial off-the-shelf (COTS) microelectronics for nuclear weapon applications will soon be reality rather than hearsay. The use of COTS for new technologies for uniquely military applications is being driven by the so-called Perry Initiative that requires the U.S. Department of Defense (DoD) to accept and utilize commercial standards for procurement of military systems. Based on this philosophy, coupled with several practical considerations, new weapons systems as well as future upgrades will contain plastic encapsulated microelectronics. However, a conservative Department of Energy (DOE) approach requires lifetime predictive models. Thus, the focus of the current project is on accelerated testing to advance current aging models as well as on the development of the methodology to be used during WR qualification of plastic encapsulated microelectronics. An additional focal point involves achieving awareness of commercial capabilities, materials, and processes. One of the major outcomes of the project has been the definition of proper techniques for handling and evaluation of modern surface mount parts which might be used in future systems. This program is also raising the familiarity level of plastic within the weapons complex, allowing subsystem design rules accommodating COTS to evolve. A two year program plan is presented along with test results and commercial interactions during this first year.

  19. Development/Plasticity/Repair Analogous Synaptic Plasticity Profiles Emerge from

    E-Print Network [OSTI]

    Narayanan, Rishikesh

    Development/Plasticity/Repair Analogous Synaptic Plasticity Profiles Emerge from Disparate Channel Institute of Technology, Calicut 637 601, India, and 3Bio-Medical Technology Wing, Sree Chitra Thirunal Institute for Medical Science & Technology, Trivandrum 695 012, India An open question within

  20. FIRST EXPERIMENTS WITH THE PLASTIC BALL

    E-Print Network [OSTI]

    Gutbrod, H.H.

    2010-01-01

    FIRST EXPERIMENTS WITH THE PLASTIC BALL H.H. Gutbrod, A.scheme for one module Plastic Soil Response (based on protonS Ropidity ——» Fig. 3. Plastic Ball acceptance in the plane

  1. Developmental Plasticity Links Local Adaptation and Evolutionary

    E-Print Network [OSTI]

    Badyaev, Alex

    Developmental Plasticity Links Local Adaptation and Evolutionary Diversification in Foraging, University of Arizona, Tucson, Arizona Developmental plasticity is thought to reconcile the constraining role morphology into adulthood, providing an opportunity to directly examine the links between plasticity of bone

  2. PERSPECTIVE Climate change, adaptation, and phenotypic plasticity

    E-Print Network [OSTI]

    Hendry, Andrew

    PERSPECTIVE Climate change, adaptation, and phenotypic plasticity: the problem and the evidence plasticity, natural selection Correspondence Juha Merila, Ecological Genetics Research Unit, Department distinguish whether phenotypic changes are genetically based or the result of phenotypic plasticity. Second

  3. Fight corrosion with plastic

    SciTech Connect (OSTI)

    Khaladkar, P.

    1995-10-01

    As chemical processors run plants longer to meet goals for increased production at lower costs, and use higher temperatures and higher throughputs to boost performance, there are more rigorous requirements for durable, corrosion-resistant equipment. Plastics, elastomers and composites help meet this need by protecting carbon steel equipment, and by providing materials of construction for components and structures. They can preserve product purity and quality by preventing contamination. Of the many polymers and composites that have proven useful for managing corrosion of chemical process equipment, most fit into three categories: barrier linings and coatings; self-supporting structures, which can be made of composites or solid polymers in tanks, piping, valves, pumps and other equipment; and other products, such as seals, gaskets, adhesives and caulks. The paper describes all three types and also remarks on the need for failure analysis.

  4. Plasticity of sandwich beam withPlasticity of sandwich beam withPlasticity of sandwich beam withPlasticity of sandwich beam with metallic foam coremetallic foam coremetallic foam coremetallic foam core

    E-Print Network [OSTI]

    Luo, Xiaoyu

    Plasticity of sandwich beam withPlasticity of sandwich beam withPlasticity of sandwich beam withPlasticity-- · Plasticity of lightweight sandwich structures, 2006 --Plasticity of lightweight sandwich structures, 2006 --Plasticity of lightweight sandwich structures, 2006 --Plasticity of lightweight sandwich structures, 2006

  5. High Performance Plastic DSSC | ANSER Center | Argonne-Northwestern...

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

    High Performance Plastic DSSC Home > Research > ANSER Research Highlights > High Performance Plastic DSSC...

  6. Memory stability and synaptic plasticity 

    E-Print Network [OSTI]

    Billings, Guy

    2009-01-01

    Numerous experiments have demonstrated that the activity of neurons can alter the strength of excitatory synapses. This synaptic plasticity is bidirectional and synapses can be strengthened (potentiation) or weakened ...

  7. Re-usability of plastics

    E-Print Network [OSTI]

    Bonas, Calvin (Calvin A.)

    2005-01-01

    A research project was designed in order to learn more about the quality of recycled plastics when compared to new material. The study was carried out by researching and learning about how the recycling process operates. ...

  8. Banding in single crystals during plastic deformation

    E-Print Network [OSTI]

    Mahesh, Sivasambu

    Banding in single crystals during plastic deformation M. Arul Kumar a Sivasambu Mahesh a,b a. India. Abstract A rigid-plastic rate-independent crystal plasticity model capable of capturing band- ing such as dense dislocation walls. Key words: crystal plasticity, single crystal, macroscopic shear band, regular

  9. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Sustainable alternatives to traditional plastics and conventional plastic waste

    E-Print Network [OSTI]

    to traditional plastics and conventional plastic waste management in the agricultural setting of the UBC Farm alternatives to traditional plastics and conventional plastic waste management in the agricultural setting ................................................................................................................. 9 Agricultural plastics

  10. Extruded plastic scintillator including inorganic powders

    DOE Patents [OSTI]

    Bross, Alan D.; Mellott, Kerry L.; Pla-Dalmau, Anna

    2006-06-27

    A method for producing a plastic scintillator is disclosed. A plurality of nano-sized particles and one or more dopants can be combined with a plastic material for the formation of a plastic scintillator thereof. The nano-sized particles, the dopant and the plastic material can be combined within the dry inert atmosphere of an extruder to produce a reaction that results in the formation of a plastic scintillator thereof and the deposition of energy within the plastic scintillator, such that the plastic scintillator produces light signifying the detection of a radiative element. The nano-sized particles can be treated with an inert gas prior to processing the nano-sized particles, the dopant and the plastic material utilizing the extruder. The plastic scintillator can be a neutron-sensitive scintillator, x-ray sensitive scintillator and/or a scintillator for the detection of minimum ionizing particles.

  11. Shrink-Induced Superhydrophobic and Antibacterial Surfaces in Consumer Plastics

    E-Print Network [OSTI]

    Freschauf, Lauren R; McLane, Jolie; Sharma, Himanshu; Khine, Michelle; Bansal, Vipul

    2012-01-01

    Transformation of a Simple Plastic into a Superhydrophobic2005) Biocompatibility of Plastics. Technical WhitePaper.2011) Hot embossing of plastic microfluidic devices using

  12. Polishing compound for plastic surfaces

    DOE Patents [OSTI]

    Stowell, M.S.

    1995-08-22

    A polishing compound for plastic surfaces is disclosed. The compound contains by weight approximately 4 to 17 parts at least one petroleum distillate lubricant, 1 to 6 parts mineral spirits, 2.5 to 15 parts abrasive particles, and 2.5 to 10 parts water. The abrasive is tripoli or a similar material that contains fine particles silica. Preferably, most of the abrasive particles are less than approximately 10 microns, more preferably less than approximately 5 microns in size. The compound is used on PLEXIGLAS{trademark}, LEXAN{trademark}, LUCITE{trademark}, polyvinyl chloride (PVC) and similar plastic materials whenever a smooth, clear polished surface is desired. 5 figs.

  13. Polishing compound for plastic surfaces

    DOE Patents [OSTI]

    Stowell, Michael S. (New Ellenton, SC)

    1995-01-01

    A polishing compound for plastic surfaces. The compound contains by weight approximately 4 to 17 parts at least one petroleum distillate lubricant, 1 to 6 parts mineral spirits, 2.5 to 15 parts abrasive particles, and 2.5 to 10 parts water. The abrasive is tripoli or a similar material that contains fine particles silica. Preferably, most of the abrasive particles are less than approximately 10 microns, more preferably less than approximately 5 microns in size. The compound is used on PLEXIGLAS.TM., LEXAN.TM., LUCITE.TM., polyvinyl chloride (PVC) and similar plastic materials whenever a smooth, clear polished surface is desired.

  14. Polishing compound for plastic surfaces

    DOE Patents [OSTI]

    Stowell, M.S.

    1993-01-01

    A polishing compound for plastic surfaces is disclosed. The compound contains by weight approximately 4 to 17 parts at least one petroleum distillate lubricant, 1 to 6 parts mineral spirits, 2.5 to 15 parts abrasive particles, and 2.5 to 10 parts water. The abrasive is tripoli or a similar material that contains colloidal silica. Preferably, most of the abrasive particles are less than approximately 10 microns, more preferably less than approximately 5 microns in size. The compound is used on PLEXIGLAS{sup TM}, LEXAN{sup TM}, LUCITE{sup TM}, polyvinyl chloride (PVC) and similar plastic materials whenever a smooth, clear polished surface is desired.

  15. Influence of plasticizer molecular weight on plasticizer retention in PVC geomembranes

    E-Print Network [OSTI]

    PROOFS Influence of plasticizer molecular weight on plasticizer retention in PVC geomembranes T. D, accepted 31 October 2004 ABSTRACT: Plasticizers are used to make PVC flexible so it can be used as a geomembrane. Plasticizers can migrate from PVC geomembranes over time because of contact with air, liquid, and

  16. ORIGINAL PAPER Costly plastic morphological responses to predator

    E-Print Network [OSTI]

    Richner, Heinz

    ORIGINAL PAPER Costly plastic morphological responses to predator specific odour cues in three fixed anti-predator morphologies are favoured when predation level is consistently high, plastic plasticity. However, little is known about sticklebacks' plastic ability to react morpho- logically

  17. Facilitated Transport of Small Carbohydrates through Plasticized Cellulose Triacetate

    E-Print Network [OSTI]

    Smith, Bradley D.

    Facilitated Transport of Small Carbohydrates through Plasticized Cellulose Triacetate Membranes.7,8 This report describes plasticized cellulose triacetate mem- branes that incorporate a large involved plasticized films that are homogeneous mixtures of cellulose triacetate (CTA), plasticizer (e

  18. Phenotypic Plasticity: Molecular Mechanisms and Adaptive Significance

    E-Print Network [OSTI]

    Saltzman, Wendy

    Phenotypic Plasticity: Molecular Mechanisms and Adaptive Significance Scott A. Kelly,*1,2 Tami M. Panhuis,2 and Andrew M. Stoehr3 ABSTRACT Phenotypic plasticity can be broadly defined as the ability organization. From an ecological and evolutionary perspective, phenotypic plasticity may be a powerful means

  19. Plasticity in FEniCS Piotr Minakowski

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Plasticity in FEniCS Piotr Minakowski Institute of Applied Mathematics and Mechanics, University@karlin.mff.cuni.cz SEMIN´AR O SOFTWARU PRO GEOFYZIKY aneb Jednooc´i slep´ym #12;Outline Plasticity Introduction Computational Methods Fluid Model of Crystal Plasticity Motivations Model Kirchhoff stress Numerical treatment

  20. Implementation Techniques for Inductive Types in Plastic ?

    E-Print Network [OSTI]

    Luo, Zhaohui

    Implementation Techniques for Inductive Types in Plastic ? Paul Callaghan and Zhaohui Luo://www.dur.ac.uk/CARG fP.C.Callaghan, Zhaohui.Luog@durham.ac.uk Abstract. In the context of Plastic, a proof assistant the reduction mechanisms of Plastic, and briefly considers optimisations for inductive types. Key words: type

  1. PHENOTYPIC PLASTICITY Functional and Conceptual Approaches

    E-Print Network [OSTI]

    DeWitt, Thomas J.

    PHENOTYPIC PLASTICITY Functional and Conceptual Approaches Edited by Thomas J. DeWitt Samuel M. A great breadth of ideas fall under the rubric of phenotypic plasticity, and this book is designed these diverse ideas under an intentionally broad definition of plasticity: environment-dependent phenotype

  2. Neural Plasticity of Development and Learning

    E-Print Network [OSTI]

    Gabrieli, John

    Neural Plasticity of Development and Learning Galvan, 2010 Presented by Kristen Morin and Sunil Patel I. Defining Development and Learning II. Neural Plasticity III. Progressive and Regressive Changes with Learning IV. Plasticity of Developmental Timing V. Neural Mechanism- Same or Different? VI. Methodological

  3. Reversibleirreversible plasticity transition in twinned copper nanopillars

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    Reversible­irreversible plasticity transition in twinned copper nanopillars J.A. Brown, N 31 October 2009 Abstract Through computer simulations, we show that plasticity in twinned copper nanopillar under compression, plastic deformation can be totally reversed when rR is in the range 0:5 6 rR 6

  4. Electromigration-induced plasticity and texture in Cu interconnects

    E-Print Network [OSTI]

    Budiman, A. S.; Advanced Light Source

    2008-01-01

    in the lines. Texture and crystal plasticity have a close,Understanding crystal plasticity and how it progresses in

  5. When Function Follows Form: Plastic Solar Cells | ANSER Center...

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

    When Function Follows Form: Plastic Solar Cells Home > Research > ANSER Research Highlights > When Function Follows Form: Plastic Solar Cells...

  6. Process for remediation of plastic waste

    DOE Patents [OSTI]

    Pol, Vilas G; Thiyagarajan, Pappannan

    2013-11-12

    A single step process for degrading plastic waste by converting the plastic waste into carbonaceous products via thermal decomposition of the plastic waste by placing the plastic waste into a reactor, heating the plastic waste under an inert or air atmosphere until the temperature of about 700.degree. C. is achieved, allowing the reactor to cool down, and recovering the resulting decomposition products therefrom. The decomposition products that this process yields are carbonaceous materials, and more specifically carbon nanotubes having a partially filled core (encapsulated) adjacent to one end of the nanotube. Additionally, in the presence of a transition metal compound, this thermal decomposition process produces multi-walled carbon nanotubes.

  7. Process for remediation of plastic waste

    DOE Patents [OSTI]

    Pol, Vilas G. (Westmont, IL); Thiyagarajan, Pappannan (Germantown, MD)

    2012-04-10

    A single step process for degrading plastic waste by converting the plastic waste into carbonaceous products via thermal decomposition of the plastic waste by placing the plastic waste into a reactor, heating the plastic waste under an inert or air atmosphere until the temperature of 700.degree. C. is achieved, allowing the reactor to cool down, and recovering the resulting decomposition products therefrom. The decomposition products that this process yields are carbonaceous materials, and more specifically egg-shaped and spherical-shaped solid carbons. Additionally, in the presence of a transition metal compound, this thermal decomposition process produces multi-walled carbon nanotubes.

  8. Polishing compound for plastic surfaces

    DOE Patents [OSTI]

    Stowell, M.S.

    1991-01-01

    This invention is comprised of a polishing compound for plastic materials. The compound includes approximately by approximately by weight 25 to 80 parts at least one petroleum distillate lubricant, 1 to 12 parts mineral spirits, 50 to 155 parts abrasive paste, and 15 to 60 parts water. Preferably, the compound includes approximately 37 to 42 parts at least one petroleum distillate lubricant, up to 8 parts mineral spirits, 95 to 110 parts abrasive paste, and 50 to 55 parts water. The proportions of the ingredients are varied in accordance with the particular application. The compound is used on PLEXIGLAS{trademark}, LEXAN{trademark}, LUCITE{trademark}, polyvinyl chloride (PVC), and similar plastic materials whenever a smooth, clear polished surface is desired.

  9. Is combustion of plastics desirable?

    SciTech Connect (OSTI)

    Piasecki, B.; Rainey, D.; Fletcher, K.

    1998-07-01

    Managing waste will always entail some tradeoffs. All of the three options--recycling, landfilling and combustion--have some disadvantages. Even landfilling, which produces no emissions, fails to take advantage of the energy value inherent in plastic. Waste combustion, on the other hand, recovers the energy in plastic materials and reduces the volume of disposed solid waste by up to 90% of its initial preburn volumes. However, this management option generates emissions and produces an ash residue that must be managed. As demonstrated by recent test burns, improvements in combustion and air-pollution-control technology have dramatically reduced the health risks from emissions and ash. Recent studies have shown that plastics--in quantities even higher than those normally found in municipal solid waste--do not adversely affect levels of emissions or the quality of ash from waste-to-energy facilities. In addition, waste-to-energy facilities may be a relatively economical source of fuel, and may be a more economic solution to waste management than the other available options. A waste-to-energy plant generally produces electricity that is sold to the electric utilities for approximately six cents per kilowatt-hour, a rate that is competitive with those offered by nuclear power plants and power plants that generate energy by burning fossil fuels.

  10. Replex Plastics | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report UrlNM-bRenewable Energy RFPsLtdEnergy Plc JumpReplex Plastics

  11. Rigid-Plastic Approximations for Predicting Plastic Deformation of Cylindrical Shells Subject to Dynamic Loading

    E-Print Network [OSTI]

    Hoo Fatt, Michelle S.

    A theoretical approach was developed for predicting the plastic deformation of a cylindrical shell subject to asymmetric dynamic loads. The plastic deformation of the leading generator of the shell is found by solving for ...

  12. Shape-shifting plastic | ornl.gov

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

    in the journal Macromolecules, is featured on the current issue's cover. The new plastic is a shape-memory polymer, so named because the material can "remember" its...

  13. INVESTIGATION Yeast Growth Plasticity Is Regulated by

    E-Print Network [OSTI]

    Sinha, Himanshu

    , Mumbai 400005, India, European Molecular Biology Laboratory, Genome Biology Unit, 69117 Heidelberg to plasticity across pairs of environments, gene­environment interaction mapping was performed, which identified

  14. Materials Science and Engineering A 445446 (2007) 186192 Plastic instabilities and dislocation densities during plastic

    E-Print Network [OSTI]

    Gubicza, Jenõ

    2007-01-01

    Materials Science and Engineering A 445­446 (2007) 186­192 Plastic instabilities and dislocation densities during plastic deformation in Al­Mg alloys Gyozo Horv´ath, Nguyen Q. Chinh, Jeno Gubicza, J 2006 Abstract Plastic deformation of Al­Mg alloys were investigated by analyzing the stress

  15. Morley Symposium on Concrete Plasticity and its Application. University of Cambridge 23 WHEN PLASTICITY?

    E-Print Network [OSTI]

    Burgoyne, Chris

    Morley Symposium on Concrete Plasticity and its Application. University of Cambridge 23 rd July, 2007 WHEN PLASTICITY? Chris MORLEY Department of Engineering, University of Cambridge, UK Keywords: concrete, plasticity, cracking, flow, size effect, fibre reinforcement 1 BACKGROUND The need for adequate

  16. Method to separate and recover oil and plastic from plastic contaminated with oil

    DOE Patents [OSTI]

    Smith, Henry M. (Overland Park, KS); Bohnert, George W. (Harrisonville, MO); Olson, Ronald B. (Kansas City, MO); Hand, Thomas E. (Lee's Summit, MO)

    1998-01-27

    The present invention provides a method to separate and recover oils and recyclable plastic from plastic contaminated with oil. The invention utilizes the different solubility of oil in as liquid or supercritical fluid as compared to a gas to effect separation of the oil from the plastic.

  17. Method to separate and recover oil and plastic from plastic contaminated with oil

    DOE Patents [OSTI]

    Smith, H.M.; Bohnert, G.W.; Olson, R.B.; Hand, T.E.

    1998-01-27

    The present invention provides a method to separate and recover oils and recyclable plastic from plastic contaminated with oil. The invention utilizes the different solubility of oil in a liquid or supercritical fluid as compared to a gas to effect separation of the oil from the plastic. 3 figs.

  18. TTUAB PLASTIC & ALUMINUM RECYCLING PROTOCOL 2013 What Plastic Do We Recycle?

    E-Print Network [OSTI]

    Rock, Chris

    the plastic bottles only if they have residual liquid. If you find bottles that have non-liquid items, do the Parking lot at Physical Plant · Notice the gas pumps on your right, head to the street behind the gas - Opaque Natural Plastic bottles and jugs - Colored Plastic bottles and jugs Other Items Accepted

  19. Cortical spatiotemporal plasticity in visual category learning

    E-Print Network [OSTI]

    Cortical spatiotemporal plasticity in visual category learning Yang Xu August 2013 CMU-ML-13-110 #12;#12;Cortical spatiotemporal plasticity in visual category learning Yang Xu August 2013 CMU-ML-13 of Philosophy c 2013 Yang Xu This research was sponsored by the National Institutes of Health under grant

  20. Plasticity in Passive Cell Mechanics D. Ambrosia

    E-Print Network [OSTI]

    Ambrosi, Davide

    Plasticity in Passive Cell Mechanics D. Ambrosia , P. Ciarlettab,c a MOX-Dipartimento di Matematica'Alembert, UMR 7190, Universit´e Pierre et Marie Curie - Paris 6 4 place Jusseu, Case 162, 75005 Paris, France c mechanics, plastic hardening 2000 MSC: 74C20, 92C05 1. Introduction The mechanical characterization

  1. Molding plastics with plasmons NSF Grant # 1121262

    E-Print Network [OSTI]

    Shahriar, Selim

    MRSEC Molding plastics with plasmons NSF Grant # 1121262 Mohamed Haggui1, Montacer Dridi2, Jérôme, 6, 1299-1307 (2012) Plastics are given shape by pouring a precursor into a mold and then initiating in which light initiates the reactions within a mold. A collaboration of scientists in France, at Argonne

  2. Castable plastic mold with electroplatable base

    DOE Patents [OSTI]

    Domeier, Linda A.; Morales, Alfredo M.; Gonzales, Marcela G.; Keifer, Patrick M.

    2004-01-20

    A sacrificial plastic mold having an electroplatable backing is provided as are methods of making such a mold via the infusion of a castable liquid formulation through a porous metal substrate (sheet, screen, mesh or foam) and into the features of a micro-scale master mold. Upon casting and demolding, the porous metal substrate is embedded within the cast formulation and projects a plastic structure with features determined by the mold tool. The plastic structure provides a sacrificial plastic mold mechanically bonded to the porous metal substrate, which provides a conducting support suitable for electroplating either contiguous or non-contiguous metal replicates. After electroplating and lapping, the sacrificial plastic can be dissolved, leaving the desired metal structure bonded to the porous metal substrate. Optionally, the electroplated structures may be debonded from the porous substrate by selective dissolution of the porous substrate or a coating thereon.

  3. Sacrificial Plastic Mold With Electroplatable Base

    DOE Patents [OSTI]

    Domeier, Linda A. (Danville, CA); Hruby, Jill M. (Livermore, CA); Morales, Alfredo M. (Livermore, CA)

    2005-08-16

    A sacrificial plastic mold having an electroplatable backing is provided. One embodiment consists of the infusion of a softened or molten thermoplastic through a porous metal substrate (sheet, screen, mesh or foam) and into the features of a micro-scale molding tool contacting the porous metal substrate. Upon demolding, the porous metal substrate will be embedded within the thermoplastic and will project a plastic structure with features determined by the mold tool. This plastic structure, in turn, provides a sacrificial plastic mold mechanically bonded to the porous metal substrate which provides a conducting support suitable for electroplating either contiguous or non-contiguous metal replicates. After electroplating and lapping, the sacrificial plastic can be dissolved to leave the desired metal structure bonded to the porous metal substrate. Optionally, the electroplated structures may be debonded from the porous substrate by selective dissolution of the porous substrate or a coating thereon.

  4. Sacrificial plastic mold with electroplatable base

    DOE Patents [OSTI]

    Domeier, Linda A. (Danville, CA); Hruby, Jill M. (Livermore, CA); Morales, Alfredo M. (Livermore, CA)

    2002-01-01

    A sacrificial plastic mold having an electroplatable backing is provided. One embodiment consists of the infusion of a softened or molten thermoplastic through a porous metal substrate (sheet, screen, mesh or foam) and into the features of a micro-scale molding tool contacting the porous metal substrate. Upon demolding, the porous metal substrate will be embedded within the thermoplastic and will project a plastic structure with features determined by the mold tool. This plastic structure, in turn, provides a sacrificial plastic mold mechanically bonded to the porous metal substrate which provides a conducting support suitable for electroplating either contiguous or non-contiguous metal replicates. After electroplating and lapping, the sacrificial plastic can be dissolved to leave the desired metal structure bonded to the porous metal substrate. Optionally, the electroplated structures may be debonded from the porous substrate by selective dissolution of the porous substrate or a coating thereon.

  5. Elastic–Plastic Spherical Contact Modeling Including Roughness Effects

    E-Print Network [OSTI]

    Li, L.; Etsion, I.; Talke, F. E.

    2010-01-01

    A multilevel model for elastic–plastic contact between ajunction growth of an elastic–plastic spherical contact. J.nite element based elastic–plastic model for the contact of

  6. CHARGED PARTICLE IDENTIFICATION WITH MODULES OF THE PLASTIC BALL

    E-Print Network [OSTI]

    Gutbrod, H.H.

    2010-01-01

    WITH MODULES OF THE PLASTIC BALL H.H. Gutbrod, M.R. Maier,WITH MODULES OF THE PLASTIC BALL H.H. Gutbrod, M.R. Maier*,of modules of the Plastic Ball detector for positive pions

  7. THE RESPONSE OF SOLIDS TO ELASTIC/ PLASTIC INDENTATION

    E-Print Network [OSTI]

    Chiang, S.S.

    2013-01-01

    OF SOLIDS TO ELASTIC/PLASTIC INDENTATION S.S. Chiang, D.B.134. Table I Normalized Plastic Zone Size (B) and Materialken from the elastic/plastic boundary, surface intersection,

  8. Developmental Plasticity in Macrophiothrix Brittlestars: Are Morphologically Convergent Larvae

    E-Print Network [OSTI]

    Developmental Plasticity in Macrophiothrix Brittlestars: Are Morphologically Convergent Larvae Also Convergently Plastic? ROBERT D. PODOLSKY* AND JUSTIN S. MCALISTER Department of Biology, University of North dimensions. The expression of adaptive plasticity (significantly longer arms in L versus H cultures

  9. Plastic Bags to Batteries: A Green Chemistry Solution | Argonne...

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

    Plastic Bags to Batteries: A Green Chemistry Solution Share Description Plastic bags are the scourge of roadsides, parking lots and landfills. But chemistry comes to the rescue At...

  10. Plastics and Rubber Products (2010 MECS) | Department of Energy

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

    Products (2010 MECS) Plastics and Rubber Products (2010 MECS) Manufacturing Energy and Carbon Footprint for Plastics Sector (NAICS 326) Energy use data source: 2010 EIA MECS...

  11. Measurement of Plastic Strain Distribution in Dissimilar Metal...

    Office of Scientific and Technical Information (OSTI)

    Measurement of Plastic Strain Distribution in Dissimilar Metal Weld by Micro-hardness Mapping Citation Details In-Document Search Title: Measurement of Plastic Strain Distribution...

  12. Sequential pyrolysis of plastic to recover polystyrene HCL and...

    Office of Scientific and Technical Information (OSTI)

    Sequential pyrolysis of plastic to recover polystyrene HCL and terephthalic acid Citation Details In-Document Search Title: Sequential pyrolysis of plastic to recover polystyrene...

  13. Renewable, Non-Toxic and Cost Competitive Solvents and Plasticizers...

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

    Renewable, Non-Toxic and Cost Competitive Solvents and Plasticizers Renewable, Non-Toxic and Cost Competitive Solvents and Plasticizers Breakout Session 1-D: The Pitch Renewable,...

  14. Plastic flow in solids with interfaces

    E-Print Network [OSTI]

    Anurag Gupta; David Steigmann

    2011-11-25

    A non-equilibrium theory of isothermal and diffusionless evolution of incoherent interfaces within a plastically deforming solid is developed. The irreversible dynamics of the interface are driven by its normal motion, incoherency (slip and misorientation), and an intrinsic plastic flow; and purely by plastic deformation in the bulk away from the interface. Using the continuum theory for defect distribution (in bulk and over the interface) we formulate a general kinematical framework, derive relevant balance laws and jump conditions, and prescribe a thermodynamically consistent constitutive/kinetic structure for interface evolution.

  15. Plastic Deformation of 2D Crumpled Wires

    E-Print Network [OSTI]

    M A F Gomes; V P Brito; A S O Coelho; C C Donato

    2008-11-17

    When a single long piece of elastic wire is injected trough channels into a confining two-dimensional cavity, a complex structure of hierarchical loops is formed. In the limit of maximum packing density, these structures are described by several scaling laws. In this paper it is investigated this packing process but using plastic wires which give origin to completely irreversible structures of different morphology. In particular, it is studied experimentally the plastic deformation from circular to oblate configurations of crumpled wires, obtained by the application of an axial strain. Among other things, it is shown that in spite of plasticity, irreversibility, and very large deformations, scaling is still observed.

  16. Plastic flow in solids with interfaces

    E-Print Network [OSTI]

    Gupta, Anurag

    2011-01-01

    A non-equilibrium theory of isothermal and diffusionless evolution of incoherent interfaces within a plastically deforming solid is developed. The irreversible dynamics of the interface are driven by its normal motion, incoherency (slip and misorientation), and an intrinsic plastic flow; and purely by plastic deformation in the bulk away from the interface. Using the continuum theory for defect distribution (in bulk and over the interface) we formulate a general kinematical framework, derive relevant balance laws and jump conditions, and prescribe a thermodynamically consistent constitutive/kinetic structure for interface evolution.

  17. Sol-gel antireflective coating on plastics

    DOE Patents [OSTI]

    Ashley, C.S.; Reed, S.T.

    1988-01-26

    An antireflection film made from reliquified sol-gel hydrolyzation, condensation polymeric reaction product of a silicon, alkoxides and/or metal alkoxides, or mixtures thereof. The film is particularly useful for coating plastics.

  18. Sol-gel antireflective coating on plastics

    DOE Patents [OSTI]

    Ashley, Carol S. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM)

    1990-01-01

    An antireflection film made from a reliquified sol-gel hydrolyzation, condensation polymeric reaction product of a silicon, alkoxides and/or metal alkoxides, or mixtures thereof. The film is particularly useful for coating plastics.

  19. Plastic strain due to twinning in austenitic TWIP steels

    E-Print Network [OSTI]

    Cambridge, University of

    Plastic strain due to twinning in austenitic TWIP steels B. Qin and H. K. D. H. Bhadeshia* Twinning induced plasticity steels are austenitic alloys in which mechanical twinning is a prominent deformation, Twinning, Twinning induced plasticity, Automobiles Introduction Mechanical twinning is a plastic

  20. Development/Plasticity/Repair Group I Metabotropic Glutamate Receptors Control

    E-Print Network [OSTI]

    Grau, James

    Development/Plasticity/Repair Group I Metabotropic Glutamate Receptors Control Metaplasticity the spinal cord can support several forms of plasticity, including response­outcome (instrumental) learning. This inhibi- tion of plasticity in spinal learning is itself a form of plasticity that requires i

  1. Plasticity of opsin gene expression in cichlids from Lake Malawi

    E-Print Network [OSTI]

    Carleton, Karen L.

    Plasticity of opsin gene expression in cichlids from Lake Malawi CHRISTOPHER M. HOFMANN, KELLY E. O plasticity has important evolutionary implications. In this study, we examined retinal plasticity in five found that the magnitude of plasticity varied across species. These findings have important implications

  2. Phenotypic Plasticity KAILEN A. MOONEY AND ANURAG A. AGRAWAL

    E-Print Network [OSTI]

    Agrawal, Anurag

    43 FO U R Phenotypic Plasticity KAILEN A. MOONEY AND ANURAG A. AGRAWAL Phenotypic plasticity (Fig. 4.1A). Such plasticity is nearly ubiquitous in nature and occurs in various animal and plant phenotypes, including behavior, physiology, and morphology. Pheno- typic plasticity may be observed as both

  3. Seismology of plastic deformation Jero^me Weiss *, Francois Louchet

    E-Print Network [OSTI]

    Weiss, Jérôme

    Seismology of plastic deformation Je´ro^me Weiss *, Franc¸ois Louchet Laboratoire de Glaciologie et-free critical picture of dislocational plasticity that challenges the classical continuum models of plasticity rights reserved. Keywords: Acoustic methods; Dislocation dynamics; Plastic deformation; Self

  4. Influence of plastic deformation on bimaterial fault rupture directivity

    E-Print Network [OSTI]

    Dmowska, Renata

    Influence of plastic deformation on bimaterial fault rupture directivity Nora DeDontney,1 Elizabeth of the role of the stress state on the distribution of plastic deformation and the direction of preferred in determining the location of plastic deformation. For different orientations, plastic deformation can

  5. Sur Cross-modal plasticity and cortical development 1 Rewiring cortex: Cross-modal plasticity and its implications for cortical

    E-Print Network [OSTI]

    Sur, Mriganka

    Sur Cross-modal plasticity and cortical development 1 Rewiring cortex: Cross-modal plasticity-modal plasticity and cortical development No of text pages: 37 No of figures: 5 Please address correspondence to: 617-253-9829 Email: msur@ai.mit.edu #12;Sur Cross-modal plasticity and cortical development 2

  6. A single hardening elasto-plastic model for Kaolin clay with loading-history-dependent plastic potential function

    E-Print Network [OSTI]

    Prashant, Amit

    A single hardening elasto-plastic model for Kaolin clay with loading-history- dependent plastic and failure criteria are found to be strongly dependent on the principal stress rotation angle () and plastic work. A unique plastic potential function determined solely by the current stress state

  7. Experimental estimation of dynamic plastic bending moments by plastic hinge models

    SciTech Connect (OSTI)

    Sogo, T.; Ujihashi, S.; Matsumoto, H.; Adachi, T.

    1995-12-31

    In the present paper, the experimental estimation of dynamic plastic bending moments for metallic materials is investigated. The three-point bending, test under impact and static loads is applied to aluminum alloy (JIS A6063S) and mild steel (JIS SS400). It is confirmed that tile dynamic bending deformations in three-point bending test can be modeled as a plastic hinge, tile experimental results show that the consumed energies of the specimens are proportional to the bending angles. The ratio of the consumed energy to the bending angle is approximately equal to the plastic bending moment. In the case of aluminum alloy, the dynamic plastic bending moments for the different average bending angular velocities coincide with the static plastic bending moments. On the other hand, in the case of mild steel, the dynamic plastic bending moments are proportional to the average bending angular velocities. As a result, we confirm that the present method based on the plastic hinge model and the consumed energy is efficient for determining tile dynamic plastic bending moment.

  8. Equivalent Plastic Strain Gradient Plasticity with Grain Boundary Hardening and Comparison to Discrete Dislocation Dynamics

    E-Print Network [OSTI]

    Bayerschen, E; Wulfinghoff, S; Weygand, D; Böhlke, T

    2015-01-01

    The gradient crystal plasticity framework of Wulfinghoff et al. [53] incorporating an equivalent plastic strain and grain boundary yielding, is extended with additional grain boundary hardening. By comparison to averaged results from many discrete dislocation dynamics (DDD) simulations of an aluminum type tricrystal under tensile loading, the new hardening parameter in the continuum model is calibrated. It is shown that although the grain boundaries (GBs) in the discrete simulations are impenetrable, an infinite GB yield strength corresponding to microhard GB conditions, is not applicable in the continuum model. A combination of a finite GB yield strength with an isotropic bulk Voce hardening relation alone also fails to model the plastic strain profiles obtained by DDD. Instead, a finite GB yield strength in combination with GB hardening depending on the equivalent plastic strain at the GBs is shown to give a better agreement to DDD results. The differences in the plastic strain profiles obtained in DDD simu...

  9. Assessing the benefits of design for recycling for plastics in electronics: A case study of computer enclosures

    E-Print Network [OSTI]

    Masanet, Eric; Horvath, Arpad

    2007-01-01

    communications. Ohio: Akron; [35] Plastics Technology, Resinprices, Plastics Technology, New York (NY) (2004) Availablefor information and technology equipment, American Plastics

  10. Fabrication method for miniature plastic gripper

    DOE Patents [OSTI]

    Benett, W.J.; Krulevitch, P.A.; Lee, A.P.; Northrup, M.A.; Folta, J.A.

    1998-07-21

    A miniature plastic gripper is described actuated by inflation of a miniature balloon and method of fabricating same. The gripper is constructed of either heat-shrinkable or heat-expandable plastic tubing and is formed around a mandrel, then cut to form gripper prongs or jaws and the mandrel removed. The gripper is connected at one end with a catheter or tube having an actuating balloon at its tip, whereby the gripper is opened or dosed by inflation or deflation of the balloon. The gripper is designed to removably retain a member to which is connected a quantity or medicine, plugs, or micro-components. The miniature plastic gripper is inexpensive to fabricate and can be used for various applications, such as gripping, sorting, or placing of micron-scale particles for analysis. 8 figs.

  11. Miniature plastic gripper and fabrication method

    DOE Patents [OSTI]

    Benett, W.J.; Krulevitch, P.A.; Lee, A.P.; Northrup, M.A.; Folta, J.A.

    1997-03-11

    A miniature plastic gripper actuated by inflation of a miniature balloon and method of fabricating same are disclosed. The gripper is constructed of either heat-shrinkable or heat-expandable plastic tubing and is formed around a mandrel, then cut to form gripper prongs or jaws and the mandrel removed. The gripper is connected at one end with a catheter or tube having an actuating balloon at its tip, whereby the gripper is opened or closed by inflation or deflation of the balloon. The gripper is designed to removably retain a member to which is connected a quantity or medicine, plugs, or micro-components. The miniature plastic gripper is inexpensive to fabricate and can be used for various applications, such as gripping, sorting, or placing of micron-scale particles for analysis. 8 figs.

  12. Fabrication method for miniature plastic gripper

    DOE Patents [OSTI]

    Benett, William J. (Livermore, CA); Krulevitch, Peter A. (Los Altos, CA); Lee, Abraham P. (Walnut Creek, CA); Northrup, Milton A. (Berkeley, CA); Folta, James A. (Livermore, CA)

    1998-01-01

    A miniature plastic gripper actuated by inflation of a miniature balloon and method of fabricating same. The gripper is constructed of either heat-shrinkable or heat-expandable plastic tubing and is formed around a mandrel, then cut to form gripper prongs or jaws and the mandrel removed. The gripper is connected at one end with a catheter or tube having an actuating balloon at its tip, whereby the gripper is opened or dosed by inflation or deflation of the balloon. The gripper is designed to removably retain a member to which is connected a quantity or medicine, plugs, or micro-components. The miniature plastic gripper is inexpensive to fabricate and can be used for various applications, such as gripping, sorting, or placing of micron-scale particles for analysis.

  13. Miniature plastic gripper and fabrication method

    DOE Patents [OSTI]

    Benett, William J. (Livermore, CA); Krulevitch, Peter A. (Los Altos, CA); Lee, Abraham P. (Walnut Creek, CA); Northrup, Milton A. (Berkeley, CA); Folta, James A. (Livermore, CA)

    1997-01-01

    A miniature plastic gripper actuated by inflation of a miniature balloon and method of fabricating same. The gripper is constructed of either heat-shrinkable or heat-expandable plastic tubing and is formed around a mandrel, then cut to form gripper prongs or jaws and the mandrel removed. The gripper is connected at one end with a catheter or tube having an actuating balloon at its tip, whereby the gripper is opened or closed by inflation or deflation of the balloon. The gripper is designed to removably retain a member to which is connected a quantity or medicine, plugs, or micro-components. The miniature plastic gripper is inexpensive to fabricate and can be used for various applications, such as gripping, sorting, or placing of micron-scale particles for analysis.

  14. THE PLASTIC BALL - A MULTI-DETECTOR, LARGE SOLID ANGLE SPECTROMETER WITH CHARGED PARTICLE IDENTIFICATION FOR THE BEVALAC

    E-Print Network [OSTI]

    Maier, M.R.

    2012-01-01

    of charged particles in a Plastic Ball module. (XBL 7910-of Califomia. THE PLASTIC BALL - A MULTI-DETECTOR, LARGEBerkeley, California Summary PLASTIC 8/>Ll PLASTIC WALL For

  15. EFFECT OF GRAIN SIZE ON THE ACOUSTIC EMISSION GENERATED DURING PLASTIC DEFORMATION OF ALUMINUM

    E-Print Network [OSTI]

    Baram, J.

    2013-01-01

    EMISSION GENERATED DURING PLASTIC DEFORMATION OF ALUMINUMEMISSION GENERATED DURING PLASTIC DEFORMATION OF ALUMINUM J.Al 1100 samples during plastic deformation were analyzed

  16. Electromigration-induced Plasticity: Texture Correlation and Implications for Reliability Assessment

    E-Print Network [OSTI]

    Budiman, A.S.

    2009-01-01

    D. Nix, and J. R. Patel, "Crystal Plasticity in Cu Damascenegeometries. Texture and crystal plasticity have a close,Understanding crystal plasticity and how it progresses in

  17. Recent advances in continuum plasticity: phenomenological modeling and experimentation using X-ray diffraction.

    E-Print Network [OSTI]

    Edmiston, John K.

    2012-01-01

    of crystal plasticity . . . . . . . . . . . . . . . . . .3.5.2 Crystal plasticity constitutive analysis of continuousA. , 90: R. Asaro. Crystal plasticity. Journal of Applied

  18. Nanoscale Surface and Interface Mechanics of Elastic-Plastic Media with Smooth, Patterned, and Rough Surfaces

    E-Print Network [OSTI]

    Yin, Xi

    2011-01-01

    dislocation and crystal plasticity predictions. Philos. Mag.gradient theory of crystal plasticity. J. Mech. Phys. Solids1999. Strain gradient crystal plasticity: Size-dependent

  19. Mapping mesoscale heterogeneity in the plastic deformation of a copper single crystal

    E-Print Network [OSTI]

    Magid, K. R.

    2009-01-01

    1 Introduction Crystal plasticity is a heterogeneousmodeling of crystal plasticity promise significant advancesthe mechanisms of plasticity in single crystal copper. The

  20. Nanoscale Surface and Interface Mechanics of Elastic-Plastic Media with Smooth, Patterned, and Rough Surfaces

    E-Print Network [OSTI]

    Yin, Xi

    2011-01-01

    the elastic and plastic properties of the softer material Eof the elastic and plastic properties of the soft surfaceon the elastic and plastic properties of the soft surface (

  1. Contact Mechanics Modeling of Homogeneous and Layered Elastic-Plastic Media: Surface Roughness and Adhesion Effects

    E-Print Network [OSTI]

    Song, Zhichao

    2012-01-01

    substrate elastic-plastic properties also play an importantof elastic-plastic material properties. The indentationand elastic-plastic materials properties by curve fitting

  2. Elastic-plastic analysis of the transition divertor joint for high performance divertor target plate

    E-Print Network [OSTI]

    Navaei, Dara

    2011-01-01

    36 Table 5: BISO plastic properties of ODS37 Table 7: BISO plastic properties of37 Table 9: BISO plastic properties of

  3. Recent advances in continuum plasticity: phenomenological modeling and experimentation using X-ray diffraction.

    E-Print Network [OSTI]

    Edmiston, John K.

    2012-01-01

    with regard to plastic properties such as yield strength anddeformation to deduce plastic properties. For example, thefirst to investigate plastic properties using the technique.

  4. PLASTIC DEFORMATION OF CRYSTALS: ANALYTICAL AND COMPUTER SIMULATION STUDIES OF DISLOCATION GLIDE

    E-Print Network [OSTI]

    Altintas, Sabri

    2011-01-01

    in Rate Processes in Plastic Deformation of Materials, J. C.PLASTIC DEFORMATION OF CRYSTALS: ANALYTICAL AND COMPUTERCAPTIONS FIGURES - iii - PLASTIC DEFORMATION OF CRYSTALS:

  5. Finite plasticity in $P^T P$

    E-Print Network [OSTI]

    Diego Grandi; Ulisse Stefanelli

    2015-09-29

    We discuss a finite-plasticity model based on the symmetric tensor $P^T P$ instead of the classical plastic strain $P$. Such a model structure arises from assuming that the material behavior is invariant with respect to frame transformations of the intermediate configuration. The resulting variational model is lower-dimensional, symmetric, and based solely on the reference configuration. We discuss the existence of energetic solutions both at the material-point level and for the quasistatic boundary-value problem. These solutions are constructed as limits of time discretizations. Eventually, the linearization of the model for small deformations is ascertained via a rigorous evolutive-$\\Gamma$-convergence argument.

  6. Modeling dislocation density evolution in continuum crystal plasticity

    E-Print Network [OSTI]

    Arsenlis, Athanasios, 1975-

    2001-01-01

    Dislocations are the singly most important material defects in crystal plasticity, and although dislocation mechanics has long been understood as the underlying physical basis for continuum crystal plasticity formulations, ...

  7. Transformation induced plasticity assisted steels: stress or strain affected martensitic

    E-Print Network [OSTI]

    Cambridge, University of

    Transformation induced plasticity assisted steels: stress or strain affected martensitic induced martensitic transformation of the retained austenite in TRIP assisted steels. The authors begin transformation? S. Chatterjee and H. K. D. H. Bhadeshia* Transformation induced plasticity (TRIP) assisted steels

  8. MESOSCALE THEORY OF GRAINS AND CELLS: POLYCRYSTALS & PLASTICITY

    E-Print Network [OSTI]

    Sethna, James P.

    MESOSCALE THEORY OF GRAINS AND CELLS: POLYCRYSTALS & PLASTICITY A Dissertation Presented RIGHTS RESERVED #12;MESOSCALE THEORY OF GRAINS AND CELLS: POLYCRYSTALS & PLASTICITY Surachate Limkumnerd, continuum explanation for the evolution of dislocations into sharp walls. We present here a mesoscale theory

  9. Severe plastic deformation of difficult-to-work alloys 

    E-Print Network [OSTI]

    Yapici, Guney Guven

    2004-09-30

    The present work aims to reveal the microstructural evolution and post-processing mechanical behavior of difficult-to-work alloys upon severe plastic deformation. Severe plastic deformation is applied using equal channel ...

  10. Variational constitutive updates for strain gradient isotropic plasticity

    E-Print Network [OSTI]

    Qiao, Lei, Ph. D. Massachusetts Institute of Technology

    2009-01-01

    In the past decades, various strain gradient isotropic plasticity theories have been developed to describe the size-dependence plastic deformation mechanisms observed experimentally in micron-indentation, torsion, bending ...

  11. A mobile antineutrino detector with plastic scintillators

    E-Print Network [OSTI]

    Yasuhiro Kuroda; Shugo Oguri; Yo Kato; Ryoko Nakata; Yoshizumi Inoue; Chikara Ito; Makoto Minowa

    2012-06-28

    We propose a new type segmented antineutrino detector made of plastic scintillators for the nuclear safeguard application. A small prototype was built and tested to measure background events. A satisfactory unmanned field operation of the detector system was demonstrated. Besides, a detailed Monte Carlo simulation code was developed to estimate the antineutrino detection efficiency of the detector.

  12. SABIC INNOVATIVE PLASTICS SEPTEMBER 18, 2013

    E-Print Network [OSTI]

    Subramanian, Venkat

    SABIC INNOVATIVE PLASTICS SEPTEMBER 18, 2013 #12;No. 1 SABIC BY THE NUMBERS #12;No. 2 OUR GLOBAL Technology Centers United States of America · Netherlands · Spain · Saudi Arabia · India · China Application · Malaysia · South Korea · Japan #12;No. 3 INGENUITY DRIVEN BY TECHNOLOGY & INNOVATION Practical innovation

  13. INTERFACE ADHESION: EFFECTS OF PLASTICITY AND SEGREGATION

    E-Print Network [OSTI]

    Hutchinson, John W.

    INTERFACE ADHESION: EFFECTS OF PLASTICITY AND SEGREGATION A. G. EVANS, J. W. HUTCHINSON{ and Y. WEIÐThe adhesion at interfaces between dissimilar materials is strongly aected by both segregation and the extent either by alloying with elements that ``getter'' the contaminants or by using an ``adhesion layer

  14. Phenotypic Plasticity, Ecophysiology, and Climate Change

    E-Print Network [OSTI]

    Saleska, Scott

    when the habitat changes? Habitat Tracking Ackerly 2003 #12;9/24/2010 3 Evolution Plasticity #12." Bradshaw 1965 #12;9/24/2010 5 From Sultan, 2007 Sun and Shade leaves Taiz and Zeiger. Plant Physiology responses to climate change relative to other processes (i.e. evolution, habitat tracking, etc)? · What

  15. Plastic Gamma Sensors: An Application in Detection of Radioisotopes

    SciTech Connect (OSTI)

    S. Mukhopadhyay

    2003-06-01

    A brief survey of plastic scintillators for various radiation measurement applications is presented here. The utility of plastic scintillators for practical applications such as gamma radiation monitoring, real-time radioisotope detection and screening is evaluated in laboratory and field measurements. This study also reports results of Monte Carlo-type predictive responses of common plastic scintillators in gamma and neutron radiation fields. Small-size plastic detectors are evaluated for static and dynamic gamma-ray detection sensitivity of selected radiation sources.

  16. Development/Plasticity/Repair Persistence of Experience-Induced Homeostatic Synaptic

    E-Print Network [OSTI]

    Lee, Hey-Kyoung

    Development/Plasticity/Repair Persistence of Experience-Induced Homeostatic Synaptic Plasticity. Theoretical analyses indicate that there are two synaptic plasticity mechanisms required: input. Experience-dependent homeostatic synaptic plasticity mechanisms have subsequently been demonstrated

  17. Towards Model Driven Engineering of Plastic User Interfaces

    E-Print Network [OSTI]

    Towards Model Driven Engineering of Plastic User Interfaces Jean-Sébastien Sottet CLIPS of a same UI are to be produced for different platforms. The development of plastic user interfaces is even more demanding. In Human Computer Interaction, plasticity denotes the capacity of a UI to withstand

  18. MATERIALS PERSPECTIVE Intermittent plastic flow of single crystals

    E-Print Network [OSTI]

    Niewczas, Marek

    MATERIALS PERSPECTIVE Intermittent plastic flow of single crystals: central problems in plasticity: a review M. Niewczas* The relationships between microstructure and plastic flow properties of copper single crystals deformed at low temperatures are reviewed based on the analysis of experimental results

  19. DISCRETE-CONTINUUM MODELING OF METAL MATRIX COMPOSITES PLASTICITY

    E-Print Network [OSTI]

    Devincre, Benoit

    . For this reason, the pre- diction of the plastic properties of Metal Matrix Composites (MMCs) is some- times for plastic properties. On the one hand, the FE code treats the boundary value problem and cares of the conDISCRETE-CONTINUUM MODELING OF METAL MATRIX COMPOSITES PLASTICITY S. Groh1, B. Devincre1, F. Feyel2

  20. Navy-ship plastic waste recycled into marine pilings

    SciTech Connect (OSTI)

    March, F.A. [Seaward International Inc., Clearbrook, VA (United States)

    1996-02-01

    Seaward International Inc., developed a new, composite, structurally reinforced, plastic-composite marine piling fabricated from 100 percent recycled plastic. A cooperative research program was begun in 1995 between the Navy and Seaward to develop a use for Navy ships waste plastic as a core in the construction of the marine piling.

  1. Plasticity at the micron scale John W. Hutchinson*

    E-Print Network [OSTI]

    Hutchinson, John W.

    Plasticity at the micron scale John W. Hutchinson* Division of Engineering and Applied Sciences into the plastic range: smaller is stronger. This eect has important implications for an increasing number of applications in electronics, structural materials and MEMS. Plastic behavior at this scale cannot

  2. CONTAINED PLASTIC DEFORMATION NEAR CRACKS AND NOTCHES UNDER LONGITUDINAL SHEAR

    E-Print Network [OSTI]

    CONTAINED PLASTIC DEFORMATION NEAR CRACKS AND NOTCHES UNDER LONGITUDINAL SHEAR James R. Rice* ABSTRACT An exact linear elastic-perfectly plastic solution is presented for the problem of a sharp notch coordinates corresponding to given stresses, position of the elastic-plastic boundary, and accompanying

  3. Developmental plasticity in plants: implications of non-cognitive behavior

    E-Print Network [OSTI]

    Novoplansky, Ariel

    Developmental plasticity in plants: implications of non- cognitive behavior ARIEL NOVOPLANSKY of interest in phenotypic plasticity in the last two decades. Most studies, however, are being carried out- logical and evolutionary approaches to the study of developmental plasticity. So as to focus

  4. Plastic flow in two-dimensional solids Akira Onuki

    E-Print Network [OSTI]

    Plastic flow in two-dimensional solids Akira Onuki Department of Physics, Kyoto University, Kyoto-Landau model of plastic deformation in two-dimensional solids is presented. The fundamental dynamic variables in uniaxial stretching. High-density dislocations produced in plastic flow do not disappear even if the flow

  5. Reversible plasticity in amorphous materials Micah Lundberg1

    E-Print Network [OSTI]

    Dennin, Michael

    Reversible plasticity in amorphous materials Micah Lundberg1 , Kapilanjan Krishan1 , Ning Xu2 to external loads. Plasticity, i.e. dis- sipative and irreversible macroscopic changes in a material for reversible plastic events at the microscopic scale in both experiments and simulations of two

  6. Phenotypic Plasticity Opposes Species Invasions by Altering Fitness Surface

    E-Print Network [OSTI]

    Phenotypic Plasticity Opposes Species Invasions by Altering Fitness Surface Scott D. Peacor1 ecological processes. However, the influence on invasions of phenotypic plasticity, a key component of many species interactions, is unknown. We present a model in which phenotypic plasticity of a resident species

  7. Harnessing plasticity to understand learning and treat disease

    E-Print Network [OSTI]

    Kilgard, Michael P.

    Harnessing plasticity to understand learning and treat disease Michael P. Kilgard The University, USA A large body of evidence suggests that neural plasticity contributes to learning and disease. Recent studies sug- gest that cortical map plasticity is typically a transient phase that improves

  8. PLASTICIZER RETENTION IN PVC GEOMEMBRANES T. D. Stark1

    E-Print Network [OSTI]

    1 PLASTICIZER RETENTION IN PVC GEOMEMBRANES T. D. Stark1 , H. Choi2 , and P. W. Diebel3 1, Ontario, Canada, N1R 5T6; PH (519)623-1630; email: PDiebel@cgtower.com ABSTRACT: Plasticizers are used to make PVC flexible so it can be used as a geomembrane for containment purposes. Plasticizers can migrate

  9. 1 Visco-plastic rheology 1.1 Effective viscosity

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    1 Visco-plastic rheology 1.1 Effective viscosity Rheology specifies the relationship between viscosity eff, = 2eff , (2) which includes viscous and plastic components, 1 eff = 1 visc + 1 plast . (3) Also the strain rate tensor can be split into viscous and plastic part, = visc + plast , (4) where

  10. PLASTIC PLANAR-INTEGRATED FREE-SPACE OPTICAL INTERCONNECTOR

    E-Print Network [OSTI]

    Jahns, Jürgen

    PLASTIC PLANAR-INTEGRATED FREE-SPACE OPTICAL INTERCONNECTOR An-Chi Wei (1), M. Jarczynski (2), M Tung University, Hsinchu, Taiwan 300, R.O.C Abstract: A plastic planar-integrated free-space optical. Introduction Plastic optics draws tremendous attention recently due to its good optical performance, light

  11. Giant Plasticity of a Quantum Crystal Ariel Haziot,1

    E-Print Network [OSTI]

    Balibar, Sébastien

    Giant Plasticity of a Quantum Crystal Ariel Haziot,1 Xavier Rojas,1 Andrew D. Fefferman,1 John R crystals may irreversibly deform. This phenomenon is known as plasticity and it is due to the motion and in the zero temperature limit, helium 4 crystals present a giant plasticity that is anisotropic and reversible

  12. Plasticity of metal nanowires Christopher R. Weinberger*a

    E-Print Network [OSTI]

    Cai, Wei

    Plasticity of metal nanowires Christopher R. Weinberger*a and Wei Cai*b Received 2nd August 2011, Accepted 24th November 2011 DOI: 10.1039/c2jm13682a The mechanisms of plasticity in metal nanowires with diameters below 100 nm are reviewed. At these length scales, plasticity in face-centered-cubic metals

  13. Plasticity in fretting of coated substrates Matthew R. Begleya

    E-Print Network [OSTI]

    Hutchinson, John W.

    Plasticity in fretting of coated substrates Matthew R. Begleya , John W. Hutchinsonb of the plastic deformation in a metal substrate fretted by a ¯at- bottomed circular peg under steady normal load of the corners of the peg. Deformation within the plastic zone is characterized, including regions of elastic

  14. Plasticity constrained: over-generalized induction cues cause maladaptive phenotypes

    E-Print Network [OSTI]

    DeWitt, Thomas J.

    Plasticity constrained: over-generalized induction cues cause maladaptive phenotypes R. Brian TAMU, College Station, TX 77843-2258, USA ABSTRACT The adaptive value of phenotypic plasticity depends) may be a major constraint on the evolution of phenotypic plasticity. Furthermore, these induced

  15. PLASTIC TORSION AND RELATED PROBLEMS FRANCOIS ALOUGES AND ANTONIO DESIMONE

    E-Print Network [OSTI]

    Alouges, François

    PLASTIC TORSION AND RELATED PROBLEMS FRANC¸OIS ALOUGES AND ANTONIO DESIMONE Abstract. A simple buckling of thin film blisters are also discussed. 1. Introduction A classical problem in Plasticity (more of Matlab code provided herein will entice many to experiment with plastic torsional loads, isotropic thin

  16. Phenotypic plasticity facilitates recurrent rapid adaptation to introduced predators

    E-Print Network [OSTI]

    Pfrender, Michael

    Phenotypic plasticity facilitates recurrent rapid adaptation to introduced predators Alison G) A central role for phenotypic plasticity in adaptive evolution is often posited yet lacks empirical support of preexisting developmental pathways, producing rapid adaptive change. We examined the role of plasticity

  17. Plasticity, healing and shakedown in sharp-asperity nanoindentation

    E-Print Network [OSTI]

    Grütter, Peter

    ARTICLES Plasticity, healing and shakedown in sharp-asperity nanoindentation GRAHAM L. W. CROSS1 we provide direct experimental measurement of indentation plasticity with contact strain fields involving up to a few thousand atoms. We observe two types of nanoscale plasticity: on the pristine surface

  18. Plasticity and language: an example of the Baldwin effect?

    E-Print Network [OSTI]

    Spirtes, Peter

    Plasticity and language: an example of the Baldwin effect? Kevin Zollman Department of Philosophy step in this direction. We examine a game-theoretic model of the interaction between plastic- ity, and Santiago Amaya for helpful suggestions. 1 #12;environmental circumstances. This phenotypic plasticity has

  19. Evolving Plastic Neural Networks with Novelty Search Sebastian Risi

    E-Print Network [OSTI]

    Stanley, Kenneth O.

    Evolving Plastic Neural Networks with Novelty Search Sebastian Risi Charles E. Hughes Kenneth O-based learning tasks, thereby opening a new direction for research in evolving plastic ANNs. Keywords Novelty combining these complementary forms of adaptation by evolving ANNs with synaptic plastic- ity driven

  20. Developmental Plasticity in Cartesian Genetic Programming Artificial Neural Networks

    E-Print Network [OSTI]

    Fernandez, Thomas

    Developmental Plasticity in Cartesian Genetic Programming Artificial Neural Networks Maryam Mahsal developmental plasticity in Artificial Neural Networks using Carte- sian Genetic Programming. This is inspired by developmental plasticity that exists in the biological brain allowing it to adapt to a changing environment

  1. Transforming Plastic Surfaces with Electrophilic Backbones from Hydrophobic to Hydrophilic

    E-Print Network [OSTI]

    Zare, Richard N.

    Transforming Plastic Surfaces with Electrophilic Backbones from Hydrophobic to Hydrophilic Samuel demonstrate a simple nonaqueous reaction scheme for transforming the surface of plastics from hydrophobic. It is permanent, does not release contaminants, and causes no optical or mechanical distortion of the plastic. We

  2. TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    1 TIME DOMAIN REFLECTOMETRY MEASUREMENT AND HIGHLY PLASTIC CLAYS By: J. A. Kuhn1 and J. G. Zornberg for use in highly plastic clay. The clay used for experimentation was taken locally from the Eagle Ford Ford Clay is determined. INTRODUCTION The progression of wetting and drying fronts in highly plastic

  3. Ecient elasto-plastic simulation ICA, University of Stuttgart, Germany

    E-Print Network [OSTI]

    Wieners, Christian

    EÃ?cient elasto-plastic simulation C. Wieners ICA, University of Stuttgart, Germany Summary. In this paper we describe a method for the construction of radial re- turn algorithms to the plasticity models plasticity, the constitutive equations are determined by the free energy functional and a monotone function

  4. ORIGINAL PAPER Temperature and kairomone induced life history plasticity

    E-Print Network [OSTI]

    Dodds, Walter

    ORIGINAL PAPER Temperature and kairomone induced life history plasticity in coexisting Daphnia temperature and predator cues. In a laboratory experiment, we measured Daphnia life history plasticity under plasticity, but responded in sharply different ways to the same environmental cues. In Glen Elder reservoir

  5. Models at Run-time for Sustaining User Interface Plasticity

    E-Print Network [OSTI]

    Models at Run-time for Sustaining User Interface Plasticity Jean-Sébastien Sottet1 Gaëlle Calvary1, Environment>) while preserving usability. This capacity of UIs is called Plasticity. In a forward engineering) to code. It is now well understood that plasticity may impact UIs at any level of abstraction. This calls

  6. Modeling the Dynamic Interaction of Hebbian and Homeostatic Plasticity

    E-Print Network [OSTI]

    Stryker, Michael

    Neuron Article Modeling the Dynamic Interaction of Hebbian and Homeostatic Plasticity Taro.toyoizumi@brain.riken.jp http://dx.doi.org/10.1016/j.neuron.2014.09.036 SUMMARY Hebbian and homeostatic plasticity together of plasticity directly modifies synaptic strength. Equilibrium is reached when the two are inducing equal

  7. On thermodynamics of crystal plasticity V.L. Berdichevsky

    E-Print Network [OSTI]

    Berdichevsky, Victor

    On thermodynamics of crystal plasticity V.L. Berdichevsky Mechanical Engineering, Wayne State; Plasticity theory; Dislocation theory 1. Introduction Thermodynamics is a theory of the slow variables of very complex systems. The goals of thermodynamics of crystal plasticity are to identify the slow

  8. Hill SyStem PlaStic mulcHed

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    a Hill SyStem PlaStic mulcHed Strawberry Production Guide for colder areaS #12;#12;i Trade names do they intend or imply discrimination against those not mentioned. Hill SyStem PlaStic mulcHed ..................................................................27 Consider Fall Laying of Extra Plastic Mulch

  9. AUI: A Programming Language for Developing Plastic Interactive Software

    E-Print Network [OSTI]

    Cordy, James R.

    AUI: A Programming Language for Developing Plastic Interactive Software Kevin A. Schneider is said to be `plastic'. This paper introduces the AUI programming language that was designed specifically to support the development of plastic interactive software. An AUI program describes the abstract interaction

  10. Method of cleaning plastics using super and subcritical media

    DOE Patents [OSTI]

    Sawan, S.P.; Spall, W.D.; Talhi, A.

    1998-05-26

    A method for treating a plastic, such as polyethylene or polypropylene, to remove at least a portion of at least one contaminant includes combining the plastic with a supercritical medium, such as carbon dioxide or sulfur hexafluoride, whereby at least a portion of the contaminant dissolves in the supercritical medium. Alternatively, the plastic can be combined with a suitable liquid medium, such as carbon dioxide or liquid sulfur hexafluoride. At least a portion of the medium, containing the dissolved contaminant, is separated from the plastic, thereby removing at least a portion of the contaminant from the plastic. 10 figs.

  11. Method of cleaning plastics using super and subcritical media

    DOE Patents [OSTI]

    Sawan, Samuel P. (Tyngsborough, MA); Spall, W. Dale (Los Alamos, NM); Talhi, Abdelhafid (Nashua, NH)

    1998-05-26

    A method for treating a plastic, such as polyethylene or polypropylene, to remove at least a portion of at least one contaminant includes combining the plastic with a supercritical medium, such as carbon dioxide or sulfur hexafluoride, whereby at least a portion of the contaminant dissolves in the supercritical medium. Alternatively, the plastic can be combined with a suitable liquid medium, such as carbon dioxide or liquid sulfur hexafluoride. At least a portion of the medium, containing the dissolved contaminant, is separated from the plastic, thereby removing at least a portion of the contaminant from the plastic.

  12. Method of coextruding plastics to form a composite sheet

    DOE Patents [OSTI]

    Tsien, Hsue C. (Chatham Township, Morris County, NJ)

    1985-06-04

    This invention pertains to a method of producing a composite sheet of plastic materials by means of coextrusion. Two plastic materials are matched with respect to their melt indices. These matched plastic materials are then coextruded in a side-by-side orientation while hot and soft to form a composite sheet having a substantially uniform demarkation therebetween. The plastic materials are fed at a substantially equal extrusion velocity and generally have substantially equal viscosities. The coextruded plastics can be worked after coextrusion while they are still hot and soft.

  13. Microsoft Word - N01535_B100 Plume Delin Rpt

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony5-TACJune through9 through

  14. Microsoft Word - N01673_B100 AA final draft

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr. Anthony5-TACJune through9

  15. S M Stoller Star Center-B100

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4227STAR

  16. S M Stoller Star Center-B100

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4227STARB100 Monthly

  17. S M Stoller Star Center-B100

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4227STARB100

  18. Thin Film Transistors On Plastic Substrates

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Sigmon, Thomas W. (Portola Valley, CA); Aceves, Randy C. (Livermore, CA)

    2004-01-20

    A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The silicon based thin film transistor produced by the process includes a low temperature substrate incapable of withstanding sustained processing temperatures greater than about 250.degree. C., an insulating layer on the substrate, a layer of silicon on the insulating layer having sections of doped silicon, undoped silicon, and poly-silicon, a gate dielectric layer on the layer of silicon, a layer of gate metal on the dielectric layer, a layer of oxide on sections of the layer of silicon and the layer of gate metal, and metal contacts on sections of the layer of silicon and layer of gate metal defining source, gate, and drain contacts, and interconnects.

  19. Plastic Magen Industry | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio1975) | OpenBethlehemPlainsboroPlastic Magen Industry Jump to:

  20. Asymmetric plastic modes in disordered solids

    E-Print Network [OSTI]

    Luka Gartner; Edan Lerner

    2015-07-24

    We propose a framework within which a robust mechanical definition of precursors to plastic instabilities, often termed `soft-spots', naturally emerges. They are shown to be collective displacements (modes) $\\hat{z}_0$ that correspond to local minima of the `barrier function' $b(\\hat{z})$. The latter is derived from the cubic approximation of the variation $\\delta U_{\\hat{z}}(s)$ of the potential energy upon displacing particles a distance $s$ along $\\hat{z}$. We show that modes $\\hat{z}_0$ corresponding to low-lying minima of $b(\\hat{z})$ lead to transitions over energy barriers in the glass, and are therefore associated with highly asymmetric variations $\\delta U_{\\hat{z}}(s)$ with $s$. We further demonstrate how a heuristic search for local minima of $b(\\hat{z})$ can a-priori detect the locus and geometry of imminent plastic instabilities with remarkable accuracy, at strains as large as $\\gamma_c-\\gamma \\sim 10^{-2}$ away from the instability strain $\\gamma_c$, where the non-affine displacements under shear are still largely delocalized. Our findings suggest that the a-priori detection of plastic instabilities can be effectively carried out by the investigation of the landscape of $b(\\hat{z})$.

  1. Nonlinear plastic modes in disordered solids

    E-Print Network [OSTI]

    Luka Gartner; Edan Lerner

    2015-10-27

    We propose a framework within which a robust mechanical definition of precursors to plastic instabilities, often termed `soft-spots', naturally emerges. They are shown to be collective displacements (modes) $\\hat{z}_0$ that correspond to local minima of the `barrier function' $b(\\hat{z})$. The latter is derived from the cubic approximation of the variation $\\delta U_{\\hat{z}}(s)$ of the potential energy upon displacing particles a distance $s$ along $\\hat{z}$. We show that modes $\\hat{z}_0$ corresponding to low-lying minima of $b(\\hat{z})$ lead to transitions over energy barriers in the glass, and are therefore associated with highly asymmetric variations $\\delta U_{\\hat{z}}(s)$ with $s$. We further demonstrate how a heuristic search for local minima of $b(\\hat{z})$ can a-priori detect the locus and geometry of imminent plastic instabilities with remarkable accuracy, at strains as large as $\\gamma_c-\\gamma \\sim 10^{-2}$ away from the instability strain $\\gamma_c$, where the non-affine displacements under shear are still largely delocalized. Our findings suggest that the a-priori detection of plastic instabilities can be effectively carried out by the investigation of the landscape of $b(\\hat{z})$.

  2. Formosa Plastics Corporation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEnia SpAFlex Fuels EnergyTool (Redirected fromPlastics

  3. Non-local fractional model of rate independent plasticity

    E-Print Network [OSTI]

    Wojciech Sumelka

    2013-09-14

    In the paper the generalisation of classical rate independent plasticity using fractional calculus is presented. This new formulation is non-local due to properties of applied fractional differential operator during definition of kinematics. In the description small fractional strains assumption is hold together with additive decomposition of total fractional strains into elastic and plastic parts. Classical local rate independent plasticity is recovered as a special case.

  4. Internal Stress in a Model Elasto-Plastic Fluid

    E-Print Network [OSTI]

    Takeshi Ooshida; Ken Sekimoto

    2005-12-03

    Plastic materials can carry memory of past mechanical treatment in the form of internal stress. We introduce a natural definition of the vorticity of internal stress in a simple two-dimensional model of elasto-plastic fluids, which generates the internal stress. We demonstrate how the internal stress is induced under external loading, and how the presence of the internal stress modifies the plastic behavior.

  5. Economical Remediation of Plastic Waste into Advanced Materials...

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

    Advanced Materials with Coatings Technology available for licensing: An autogenic pyrolysis process to convert plastic waste into high-value carbon nanotubes (50- to 100-nm...

  6. Renewable, Non-Toxic and Cost Competitive Solvents and Plasticizers

    Broader source: Energy.gov [DOE]

    Breakout Session 1-D: The Pitch Renewable, Non-Toxic and Cost Competitive Solvents and Plasticizers Len Rand, Chief Executive Officer, Chairman, xF Technologies

  7. Beryllium-7 Implantation in Plastics for Prosthesis Wear Studies...

    Office of Science (SC) Website

    Beryllium-7 Implantation in Plastics for Prosthesis Wear Studies Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Applications of Nuclear...

  8. Dislocations, Plasticity and Metal Forming: Proceedings of PLASTICITY'03: The Tenth International Symposium on Plasticity and its Current Applications, A.A. Khan, R. Kazmi and J. Zhou (eds.). Maryland: NEAT Press.

    E-Print Network [OSTI]

    Aubertin, Michel

    Dislocations, Plasticity and Metal Forming: Proceedings of PLASTICITY'03: The Tenth International Symposium on Plasticity and its Current Applications, A.A. Khan, R. Kazmi and J. Zhou (eds.). Maryland: NEAT Press. 570 A UNIFIED MULTIAXIAL FORMULATION TO DESCRIBE YIELDING, PLASTIC POTENTIAL, AND LIMIT STATES

  9. Recycling plastic scrap: Injection molding. (Latest citations from the Rubber and Plastics Research Association database). Published Search

    SciTech Connect (OSTI)

    NONE

    1997-02-01

    The bibliography contains citations concerning the recycling of scrap plastic produced in the injection molding process. Plastic pellets made from scrap, that are used in the injection molding process, are also discussed. Recycling equipment and automated recycling systems are described. The reuse of plastic scrap culled from junk automobiles and packaging materials is discussed, and waste byproducts from polyurethane production are described. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

  10. Recycling plastic scrap: Injection molding. (Latest citations from the Rubber and Plastics Research Association database). Published Search

    SciTech Connect (OSTI)

    NONE

    1996-04-01

    The bibliography contains citations concerning the recycling of scrap plastic produced in the injection molding process. Plastic pellets made from scrap, that are used in the injection molding process, are also discussed. Recycling equipment and automated recycling systems are described. The reuse of plastic scrap culled from junk automobiles and packaging materials is discussed, and waste byproducts from polyurethane production are described. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

  11. Topological Effects of Synaptic Time Dependent Plasticity

    E-Print Network [OSTI]

    James R. Kozloski; Guillermo A. Cecchi

    2010-03-19

    We show that the local Spike Timing-Dependent Plasticity (STDP) rule has the effect of regulating the trans-synaptic weights of loops of any length within a simulated network of neurons. We show that depending on STDP's polarity, functional loops are formed or eliminated in networks driven to normal spiking conditions by random, partially correlated inputs, where functional loops comprise weights that exceed a non-zero threshold. We further prove that STDP is a form of loop-regulating plasticity for the case of a linear network comprising random weights drawn from certain distributions. Thus a notable local synaptic learning rule makes a specific prediction about synapses in the brain in which standard STDP is present: that under normal spiking conditions, they should participate in predominantly feed-forward connections at all scales. Our model implies that any deviations from this prediction would require a substantial modification to the hypothesized role for standard STDP. Given its widespread occurrence in the brain, we predict that STDP could also regulate long range synaptic loops among individual neurons across all brain scales, up to, and including, the scale of global brain network topology.

  12. A Development Process for Plastic User Interfaces David Thevenin, Galle Calvary, Jolle Coutaz,

    E-Print Network [OSTI]

    A Development Process for Plastic User Interfaces David Thevenin, Gaëlle Calvary, Joëlle Coutaz of plastic user interfaces. 2. Plasticity The term plasticity is inspired from the property of materials to HCI, plasticity is the "capacity of an interactive system to withstand variations of context of use

  13. PlasticPDMS bonding for high pressure hydrolytically stable active microfluidics

    E-Print Network [OSTI]

    Ram, Rajeev J.

    to plastics. Plastics can be manufactured using mass fabrication technologies such as injection molding with established plastic mass fabri- cation technologies. Bonding technologies Bonding between PDMS and plasticsPlastic­PDMS bonding for high pressure hydrolytically stable active microfluidics Kevin S. Lee

  14. Baling Used Agricultural Plastic Dr. Ron Goldy, MSUE, District Extension Educator

    E-Print Network [OSTI]

    . Only soft-bale technology was tried for baling field plastic Figure 1. Applying plastic mulch and dripBaling Used Agricultural Plastic Dr. Ron Goldy, MSUE, District Extension Educator Introduction: Use of plastics in vegetable production has greatly increased over the past several years (Figure 1). Plastic

  15. Orthogonal projections onto convex sets and the application to problems in plasticity

    E-Print Network [OSTI]

    Wieners, Christian

    Orthogonal projections onto convex sets and the application to problems in plasticity Christian Wieners ABSTRACT. We review the classical theory of static and quasi­static plasticity in an abstract problem in plasticity. The abstract setting is applied to problems in perfect plasticity and to plasticity

  16. THE RESPONSE OF SOLIDS TO ELASTIC/PLASTIC INDENTATION AND THE APPLICATION OF INDENTATION TO ADHESION MEASUREMENTS

    E-Print Network [OSTI]

    Chiang, Shu-Sheng

    2013-01-01

    676. Table I. Normalized Plastic Zone Size (B) and Material·• • Initial - - Elastic/ plastic bounda ---- Cavi in rfaceCTIONAL VIEW XBLSOI Fig. I-9 Plastic Boundary solu/ Initial

  17. Plastic deformation in Al (Cu) interconnects stressed by electromigration and studied by synchrotron polychromatic X-ray microdiffraction

    E-Print Network [OSTI]

    Chen, Kai; Advanced Light Source; UCLA

    2008-01-01

    Plastic deformation in Al (Cu) interconnects stressed bygrain orientation [7], study plastic deformation [12-15] andThis aspect of EM-induced plastic deformation in grains

  18. GRADIENT THEORY FOR PLASTICITY VIA HOMOGENIZATION OF DISCRETE DISLOCATIONS

    E-Print Network [OSTI]

    Garroni, Adriana

    GRADIENT THEORY FOR PLASTICITY VIA HOMOGENIZATION OF DISCRETE DISLOCATIONS ADRIANA GARRONI theory for plasticity from a model of discrete dislocations. We restrict our analysis to the case of a cylindrical symmetry for the crystal in exam, so that the mathematical formulation will involve a two

  19. Dislocation dynamics: from microscopic models to macroscopic crystal plasticity

    E-Print Network [OSTI]

    El Hajj, Ahmad

    Dislocation dynamics: from microscopic models to macroscopic crystal plasticity A. El Hajj , H study ranges from atomic models to macroscopic crystal plasticity. At each scale, dislocations can crystal Z3 where each position with integer coordinates is occupied by one atom. We want to describe

  20. ELASTIC-PLASTIC MODE-II FRACTURE OF ADHESIVE JOINTS

    E-Print Network [OSTI]

    Thouless, Michael

    & Engineering University of Michigan, Ann Arbor, MI 48109 3 Scientific Research Laboratories Ford Motor Company materials by a third phase is of long-standing interest in a variety of industrial and technological which account for plasticity in the surrounding materials, the energy dissipated by plasticity can

  1. Micrographic detection of plastic deformation in nickel base alloys

    DOE Patents [OSTI]

    Steeves, Arthur F. (Schenectady, NY); Bibb, Albert E. (Clifton Park, NY)

    1984-01-01

    A method for detecting low levels of plastic deformation in metal articles comprising electrolytically etching a flow free surface of the metal article with nital at a current density of less than about 0.1 amp/cm.sup.2 and microscopically examining the etched surface to determine the presence of alternating striations. The presence of striations indicates plastic deformation in the article.

  2. Zo Rebecca Hunter Plasticity of the adult human brain

    E-Print Network [OSTI]

    Kallenrode, May-Britt

    Zoë Rebecca Hunter Plasticity of the adult human brain and motor recovery after stroke PICS © Institute of Cognitive Science #12;1 Bachelor's Thesis Plasticity of the adult human brain and motor brain and motor recovery after stroke 2 Abstract Stroke may cause a major destruction of brain tissue

  3. Plastic Bags to Batteries: A Green Chemistry Solution

    ScienceCinema (OSTI)

    None

    2013-04-19

    Plastic bags are the scourge of roadsides, parking lots and landfills. But chemistry comes to the rescue! At Argonne National Laboratory, Vilas Pol has found a way to not only recycle plastic bags--but make them into valuable batteries for cell phones and laptops.

  4. Development/Plasticity/Repair Identification of Nicotinic Acetylcholine Receptor Recycling

    E-Print Network [OSTI]

    Alford, Simon

    Development/Plasticity/Repair Identification of Nicotinic Acetylcholine Receptor Recycling and Its plasticity; however, the recycling of receptors has never been observed at peripheral synapses. Using a novel the regulation of receptor density, which could lead to rapid alterations in synaptic efficacy. Key words: toxin

  5. The Anatomy of Plastic Events in Magnetic Amorphous Solids

    E-Print Network [OSTI]

    H. George E. Hentschel; Itamar Procaccia; Bhaskar Sen Gupta

    2015-01-25

    Plastic events in amorphous solids can be much more than just "shear transformation zones" when the positional degrees of freedom are coupled non-trivially to other degrees of freedom. Here we consider magnetic amorphous solids where mechanical and magnetic degrees of freedom interact, leading to rather complex plastic events whose nature must be disentangled. In this paper we uncover the anatomy of the various contributions to some typical plastic events. These plastic events are seen as Barkhausen Noise or other "serrated noises". Using theoretical considerations we explain the observed statistics of the various contributions to the considered plastic events. The richness of contributions and their different characteristics imply that in general the statistics of these "serrated noises" cannot be universal, but rather highly dependent on the state of the system and on its microscopic interactions.

  6. Measurement of large strains in ropes using plastic optical fibers

    DOE Patents [OSTI]

    Williams, Jerry Gene; Smith, David Barton; Muhs, Jeffrey David

    2006-02-14

    A method for the direct measurement of large strains in ropes in situ using a plastic optical fiber, for example, perfluorocarbon or polymethyl methacrylate and Optical Time-Domain Reflectometer or other light time-of-flight measurement instrumentation. Protective sheaths and guides are incorporated to protect the plastic optical fiber. In one embodiment, a small rope is braided around the plastic optical fiber to impose lateral compressive forces to restrain the plastic optical fiber from slipping and thus experience the same strain as the rope. Methods are described for making reflective interfaces along the length of the plastic optical fiber and to provide the capability to measure strain within discrete segments of the rope. Interpretation of the data allows one to calculate the accumulated strain at any point in time and to determine if the rope has experienced local damage.

  7. EFFECT OF GRAIN SIZE ON THE ACOUSTIC EMISSION GENERATED DURING PLASTIC DEFORMATION OF COPPER

    E-Print Network [OSTI]

    Baram, J.

    2011-01-01

    but only after some extent of plastic deformation, It can,The Inhomogeneity of Plastic Deformation, A.S.M. Seminar,EMISSION GENERATED DURING PLASTIC DEFORMATION OF COPPER J,

  8. Plastic, the Great Pacific Garbage Patch, and International Misfires at a Cure

    E-Print Network [OSTI]

    Harse, Grant A.

    2011-01-01

    78 due to plastic's lipophilic properties. 79 "Small bits ofis these useful properties of plastics, which can make themPLASTIC, THE GREAT PACIFIC GARBAGE PATCH electrical insulation properties.

  9. Effects of mechanical properties and surface friction on elasto-plastic sliding contact

    E-Print Network [OSTI]

    Dao, Ming

    Effects of mechanical properties and surface friction on elasto-plastic sliding contact S functions, for various contact conditions, that relate elasto-plastic properties (Young's modulus, yield reserved. Keywords: Frictional sliding; Scratch test; Elasto-plastic properties; Contact mechanics

  10. Mechanisms of ocular dominance plasticity in the juvenile and adult mouse visual cortex

    E-Print Network [OSTI]

    Khibnik, Lena A

    2011-01-01

    Ocular dominance (OD) plasticity is a classic example of bidirectional experience-dependent plasticity in the primary visual cortex. This form of plasticity is most robust during early postnatal development (termed the ...

  11. PLASTIC-PDMS HYBRID DEVICES FOR HIGH PRESSURE HYDROLYTICALLY STABLE ACTIVE

    E-Print Network [OSTI]

    Ram, Rajeev J.

    for microfluidic chip fabrication [1]. Plastics can be manufactured using mass fabrication technologies the functionality of PDMS with established plastic fabrication technologies. BACKGROUND Irreversible bonding betweenPLASTIC-PDMS HYBRID DEVICES FOR HIGH PRESSURE HYDROLYTICALLY STABLE ACTIVE MICROFLUIDICS Kevin S

  12. Plastic collapse of lattice structures under a general stress state Babak Haghpanah, Jim Papadopoulos, Ashkan Vaziri

    E-Print Network [OSTI]

    Vaziri, Ashkan

    Plastic collapse of lattice structures under a general stress state Babak Haghpanah, Jim 22 August 2013 Available online 19 September 2013 Keywords: Plastic collapse strength Lattice minimization procedure to determine the macroscopic `plastic col- lapse strength' of a tessellated cellular

  13. Trophic plasticity and fine-grained resource variation in populations of western mosquitofish, Gambusia affinis

    E-Print Network [OSTI]

    DeWitt, Thomas J.

    Trophic plasticity and fine-grained resource variation in populations of western mosquitofish ABSTRACT Hypothesis: Fish will exhibit morphological plasticity in response to how (food type: live vs, population differentiation, resource polymorphism, trophic plasticity. INTRODUCTION Natural environments vary

  14. Plastic, the Great Pacific Garbage Patch, and International Misfires at a Cure

    E-Print Network [OSTI]

    Harse, Grant A.

    2011-01-01

    Environmental Implication of Plastic Debris in Marineat 2014. Consumption of plastics by marine animals has beenC. Thompson et al. , Our Plastic Age, 364 PhIL. TRANSAc--

  15. Elastic-plastic analysis of the transition divertor joint for high performance divertor target plate

    E-Print Network [OSTI]

    Navaei, Dara

    2011-01-01

    locations of principal plastic strains in 3D warm and coldthe ARIES Team “Elastic-Plastic analysis of the transitionSAN DIEGO Elastic-Plastic Analysis of the Transition

  16. 2014 ENERGY AND ECONOMIC VALUE OF MUNICIPAL SOLID WASTE (MSW) AND NON-RECYCLED PLASTICS (NRP)

    E-Print Network [OSTI]

    Columbia University

    1 2014 ENERGY AND ECONOMIC VALUE OF MUNICIPAL SOLID WASTE (MSW) AND NON-RECYCLED PLASTICS) AND NON-RECYCLED PLASTICS (NRP) CURRENTLY LANDFILLED IN THE FIFTY STATES EXECUTIVE (EEC) Report to the Plastics Division of the American Chemistry Council

  17. Plasticity of metal wires in torsion: molecular dynamics and dislocation dynamics simulations

    E-Print Network [OSTI]

    Cai, Wei

    Plasticity of metal wires in torsion: molecular dynamics and dislocation dynamics simulations-4040 Abstract The orientation dependent plasticity in metal nanowires is investigated using molecular dynamics metal wires controls the mechanisms of plastic deformation. For wires oriented along 110 , dislocations

  18. Modeling Elasto-Plastic Behavior of Polycrystalline Grain Structure of Steels at Mesoscopic Level

    E-Print Network [OSTI]

    Cizelj, Leon

    Modeling Elasto-Plastic Behavior of Polycrystalline Grain Structure of Steels at Mesoscopic Level. The constitutive model of crystal grains utilizes anisotropic elasticity and crystal plasticity. Commercially be considered macroscopically homogeneous. Elastic and rate independent plastic deformation modes are considered

  19. Behavioral/Systems/Cognitive Distinctive Features of Adult Ocular Dominance Plasticity

    E-Print Network [OSTI]

    Stryker, Michael

    Behavioral/Systems/Cognitive Distinctive Features of Adult Ocular Dominance Plasticity Masaaki Sato-0444 Sensoryexperienceprofoundlyshapesneuralcircuitryofjuvenilebrain.Althoughthevisualcortexofadultrodentsretainsacapacityfor plasticity in response to monocular visual deprivation, the nature of this plasticity and the neural circuit changes that accompany

  20. IS PHENOTYPIC PLASTICITY ADAPTIVE? Kimberly A. Hughes, Mary H. Burleson, and F. Helen Rodd

    E-Print Network [OSTI]

    Hughes, Kim

    23 Chapter 2 IS PHENOTYPIC PLASTICITY ADAPTIVE? Kimberly A. Hughes, Mary H. Burleson, and F. Helen Rodd Keywords: adaptation, adaptationist paradigm, canalization, cost of plasticity, evolutionary, multivariate selection analysis, natural selection, optimality models, phenotypic plasticity, quantitative

  1. Filamentary Switching: Synaptic Plasticity through Device Volatility

    E-Print Network [OSTI]

    La Barbera, Selina; Alibart, Fabien

    2015-01-01

    Replicating the computational functionalities and performances of the brain remains one of the biggest challenges for the future of information and communication technologies. Such an ambitious goal requires research efforts from the architecture level to the basic device level (i.e., investigating the opportunities offered by emerging nanotechnologies to build such systems). Nanodevices, or, more precisely, memory or memristive devices, have been proposed for the implementation of synaptic functions, offering the required features and integration in a single component. In this paper, we demonstrate that the basic physics involved in the filamentary switching of electrochemical metallization cells can reproduce important biological synaptic functions that are key mechanisms for information processing and storage. The transition from short- to long-term plasticity has been reported as a direct consequence of filament growth (i.e., increased conductance) in filamentary memory devices. In this paper, we show tha...

  2. The plasticity of TGF-beta signaling

    E-Print Network [OSTI]

    Geraldine Celliere; Georgios Fengos; Marianne Herve; Dagmar Iber

    2011-11-02

    The family of TGFb ligands is large and its members are involved in many different signaling processes. These signaling processes strongly differ in type with TGFb ligands eliciting both sustained or transient responses. Members of the TGFb family can also act as morphogen and cellular responses would then be expected to provide a direct read-out of the extracellular ligand concentration. We were interested to define the set of minimal modifications that are required to change the type of signal processing in the TGFb signaling network. To define the key aspects for signaling plasticity we focused on the core of the TGFb signaling network. With the help of a parameter screen we identified ranges of kinetic parameters and protein concentrations that give rise to transient, sustained, or oscillatory responses to constant stimuli, as well as those parameter ranges that enable a proportional response to time-varying ligand concentrations (as expected in the read-out of morphogens). A combination of a strong negative feedback and fast shuttling to the nucleus biases signaling to a transient rather than a sustained response, while oscillations were obtained if ligand binding to the receptor is weak and the turn-over of the I-Smad is fast. A proportional read-out required inefficient receptor activation in addition to a low affinity of receptor-ligand binding. We find that targeted modification of single parameters suffices to alter the response type. The architecture of the TGFb pathway enables the observed signaling plasticity. The observed range of signaling outputs to TGFb ligand in different cell types and under different conditions can be explained with differences in cellular protein concentrations and with changes in effective rate constants due to cross-talk with other signaling pathways.

  3. UGA DESIGN & CONSTRUCTION SUPPLEMENTAL GENERAL REQUIREMENTS & STANDARDS GENERAL WOOD, PLASTICS, & COMPOSITES REQUIREMENTS

    E-Print Network [OSTI]

    Arnold, Jonathan

    UGA DESIGN & CONSTRUCTION SUPPLEMENTAL GENERAL REQUIREMENTS & STANDARDS GENERAL WOOD, PLASTICS, & COMPOSITES REQUIREMENTS JANUARY 16, 2015 06 00 00-1 06 00 00 GENERAL WOOD, PLASTICS, & COMPOSITES

  4. PSD-95-like membrane associated guanylate kinases (PSD-MAGUKs) and synaptic plasticity

    E-Print Network [OSTI]

    Xu, Weifeng

    Activity-dependent modification of excitatory synaptic transmission is a fundamental mechanism for developmental plasticity of the neural circuits and experience-dependent plasticity. Synaptic glutamatergic receptors ...

  5. Plastics or Fibers from Bio-Based Polymers | Department of Energy

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

    Polymers Plastics or Fibers from Bio-Based Polymers Plastics from Renewable Resources Offer Significant Commercial and Environmental Benefits Each year, 60 billion pounds of...

  6. Generalized Defect Energy in a Gradient Plasticity Framework

    E-Print Network [OSTI]

    Bayerschen, E

    2015-01-01

    A gradient plasticity model is presented that includes a generalized, power-law type defect energy depending on the gradient of an equivalent plastic strain. Numerical regularization for the case of vanishing gradients is employed in the finite element discretization of the theory. Three exemplary choices of the defect energy exponent are compared in finite element simulations of elastic-plastic tricrystals under tensile loading. The influence of the power-law exponent is discussed related to the distribution of gradients and in regard to size effects. In addition, an analytical solution is presented for the single slip case and allows to interpret the numerical findings.

  7. Spikes Synchronization in Neural Networks with Synaptic Plasticity

    E-Print Network [OSTI]

    Borges, Rafael R; Batista, Antonio M; Caldas, Iberê L; Borges, Fernando S; Lameu, Ewandson L

    2015-01-01

    In this paper, we investigated the neural spikes synchronisation in a neural network with synaptic plasticity and external perturbation. In the simulations the neural dynamics is described by the Hodgkin Huxley model considering chemical synapses (excitatory) among neurons. According to neural spikes synchronisation is expected that a perturbation produce non synchronised regimes. However, in the literature there are works showing that the combination of synaptic plasticity and external perturbation may generate synchronised regime. This article describes the effect of the synaptic plasticity on the synchronisation, where we consider a perturbation with a uniform distribution. This study is relevant to researches of neural disorders control.

  8. Process for the recovery and separation of plastics

    DOE Patents [OSTI]

    Jody, Bassam J.; Daniels, Edward J.; Pomykala Jr., Joseph A.

    2003-07-29

    A method of separating a portion of acrylonitrile-butadiene-styrene (ABS) from a mixture containing ABS and for separating a portion of ABS and polycarbonate (PC) from a mixture of plastics containing ABS and PC is disclosed. The method includes shredding and/or granulating the mixture of plastics containing ABS and PC to provide a selected particle size; sequentially dispersing the shredded mixture of plastics in a series aqueous solutions having different specific gravities and separating the floating fraction until the desired separation is obtained. Surface tension and pH are also variable to be controlled.

  9. Universality of the Plastic Instability in Strained Amorphous Solids

    E-Print Network [OSTI]

    Ratul Dasgupta; Smarajit Karmakar; Itamar Procaccia

    2011-11-03

    By comparing the response to external strains in metallic glasses and in Lenard-Jones glasses we find a quantitative universality of the fundamental plastic instabilities in the athermal, quasistatic limit. Microscopically these two types of glasses are as different as one can imagine, the latter being determined by binary interactions, whereas the former by multiple interactions due to the effect of the electron gas that cannot be disregarded. In spite of this enormous difference the plastic instability is the same saddle-node bifurcation. As a result the statistics of stress and energy drops in the elasto-plastic steady state are universal, sharing the same system-size exponents.

  10. A shapeable material without plastic deformation

    E-Print Network [OSTI]

    Naomi Oppenheimer; Thomas A. Witten

    2015-06-01

    Randomly crumpled sheets have shape memory. In order to understand the basis of this form of memory, we simulate triangular lattices of springs whose lengths are altered to create a topography with multiple potential energy minima. We then deform these lattices into different shapes and investigate their ability to retain the imposed shape when the energy is relaxed. The lattices are able to retain a range of curvatures. Under moderate forcing from a state of local equilibrium, the lattices deform by several percent but return to their retained shape when the forces are removed. By increasing the forcing until an irreversible motion occurs, we find that the transitions between remembered shapes show co-operativity among several springs. For fixed lattice structures, the shape memory tends to decrease as the lattice is enlarged; we propose ways to counter this decrease by modifying the lattice geometry. We survey the energy landscape by displacing individual nodes. An extensive fraction of these nodes proves to be bistable; they retain their displaced position when the energy is relaxed. Bending the lattice to a stable curved state alters the pattern of bistable nodes. We discuss this shapeability in the context of other forms of material memory and contrast it with the shapeability of plastic deformation. We outline the prospects for making real materials based on these principles.

  11. High reliability plastic packaging for microelectronics

    SciTech Connect (OSTI)

    Sweet, J.N.; Peterson, D.W.; Hsia, A.H.; Tuck, M.

    1997-07-01

    Goal was Assembly Test Chips (ATCs) which could be used for evaluating plastic encapsulation technologies. Circuits were demonstrated for measuring Au-Al wirebond and Al metal corrosion failure rates during accelerated temperature and humidity testing. The test circuits on the ATC02.5 chip were very sensitive to extrinsic or processing induced failure rates. Accelerated aging experiments were conducted with unpassivated triple track Al structures on the ATC02.6 chip; the unpassivated tracks were found to be very sensitive to particulate contamination. Some modifications to existing circuitry were suggested. The piezoresistive stress sensing circuitry designed for the ATC04 test chip was found suitable for determining the change in the state of mechanical stress at the die when both initial and final measurements were made near room temperature (RT). Attempt to measure thermal stress between RT and a typical polymer glass transition temperature failed because of excessive die resistor- substrate leakage currents at the high temperature end; suitable circuitry changes were developed to overcome this problem. One temperature and humidity experiment was conducted with Sandia developed static radom access memory parts to examine non-corrosion CMOS failures; this objective was not achieved, but corrosion failure at the metal to Si contacts on the die surface could be detected. This 2-year effort resulted in new designs for test circuits which could be used on an advanced ATC for reliability assessment in Defense Programs electronics development projects.

  12. LIFE CYCLE ANALYSIS: COMPARING PLA PLASTIC FOOD USE PRODUCTS

    E-Print Network [OSTI]

    ........................................................................................................ 12 6.3 Calculating Energy Usage.............................................................................................. 13 7 Overall Energy UsageLIFE CYCLE ANALYSIS: COMPARING PLA PLASTIC FOOD USE PRODUCTS ON THE BASIS OF ENERGY CONSUMPTION Sin

  13. A nonlocal, ordinary, state-based plasticity model for peridynamics...

    Office of Scientific and Technical Information (OSTI)

    algorithm for a non-local, state-based, peridynamics plasticity model is developed. The flow rule was proposed in 3 without an integration strategy or yield criterion. This...

  14. Relaxation dynamics and ionic conductivity in a fragile plastic crystal

    E-Print Network [OSTI]

    Th. Bauer; M. Köhler; P. Lunkenheimer; A. Loidl; C. A. Angell

    2010-06-30

    We report a thorough characterization of the dielectric relaxation behavior and the ionic conductivity in the plastic-crystalline mixture of 60% succinonitrile and 40% glutaronitrile. The plastic phase can be easily supercooled and the relaxational behavior is investigated by broadband dielectric spectroscopy in the liquid, plastic crystalline, and glassy crystal phases. The very pronounced alpha-relaxation found in the spectra is characterized in detail. From the temperature dependence of the alpha-relaxation time, a fragility parameter of 62 was determined making this material one of the most fragile plastic-crystalline glass formers. A well-pronounced secondary and faint indications for a third relaxation process were found, the latter most likely being of Johari-Goldstein type. In addition, relatively strong conductivity contributions were detected in the spectra exhibiting the typical features of ionic charge transport.

  15. Shrink-Induced Superhydrophobic and Antibacterial Surfaces in Consumer Plastics

    E-Print Network [OSTI]

    Freschauf, Lauren R; McLane, Jolie; Sharma, Himanshu; Khine, Michelle; Bansal, Vipul

    2012-01-01

    the initial mold is made with commodity shrink-wrap film andshrink the polymer and then casted to the superhydrophobic PDMS moldshrink film; these structures can be readily transferred into any plastic using a rapid cast and mold

  16. Kinematic quantities of finite elastic and plastic deformation

    E-Print Network [OSTI]

    T. Fülöp; P. Ván

    2012-03-05

    Kinematic quantities for finite elastic and plastic deformations are defined via an approach that does not rely on auxiliary elements like reference frame and reference configuration, and that gives account of the inertial-noninertial aspects explicitly. These features are achieved by working on Galilean spacetime directly. The quantity expressing elastic deformations is introduced according to its expected role: to measure how different the current metric is from the relaxed/stressless metric. Further, the plastic kinematic quantity is the change rate of the stressless metric. The properties of both are analyzed, and their relationship to frequently used elastic and plastic kinematic quantities is discussed. One important result is that no objective elastic or plastic quantities can be defined from deformation gradient.

  17. Resource variation and the evolution of phenotypic plasticity in fishes 

    E-Print Network [OSTI]

    Ruehl, Clifton Benjamin

    2004-09-30

    plasticity and performance in red drum (Sciaenops ocellatus). I fed hatchery fish either hard or soft food for two months. Performance trials were designed to measure their ability to manipulate and consume hard food items. External morphology and the mass...

  18. Development/Plasticity/Repair Dorsally and Ventrally Derived Oligodendrocytes Have

    E-Print Network [OSTI]

    Richardson, William D.

    Development/Plasticity/Repair Dorsally and Ventrally Derived Oligodendrocytes Have Similar derived oligodendrocyte (OL) lineage cells have different properties. We generated a dual reporter mouse line to color code ventrally and dorsally derived OLPs (vOLPs and d

  19. Photoconversion of gasified organic materials into biologically-degradable plastics

    DOE Patents [OSTI]

    Weaver, P.F.; Pinching Maness.

    1993-10-05

    A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer. 3 figures.

  20. Photoconversion of gasified organic materials into biologically-degradable plastics

    DOE Patents [OSTI]

    Weaver, Paul F. (Golden, CO); Maness, Pin-Ching (Golden, CO)

    1993-01-01

    A process is described for converting organic materials (such as biomass wastes) into a bioplastic suitable for use as a biodegradable plastic. In a preferred embodiment the process involves thermally gasifying the organic material into primarily carbon monoxide and hydrogen, followed by photosynthetic bacterial assimilation of the gases into cell material. The process is ideally suited for waste recycling and for production of useful biodegradable plastic polymer.

  1. Plastic wastes as modifiers of the thermoplasticity of coal

    SciTech Connect (OSTI)

    M.A. Diez; C. Barriocanal; R. Alvarez [Instituto Nacional del Carbon (INCAR), Oviedo (Spain)

    2005-12-01

    Plastic waste recycling represents a major challenge in environmental protection with different routes now available for dealing with mechanical, chemical, and energy recycling. New concepts in plastic waste recycling have emerged so that now such wastes can be used to replace fossil fuels, either as an energy source or as a secondary raw material. Our objective is to explore the modification of the thermoplastic properties of coal in order to assess the possibility of adding plastic waste to coal for the production of metallurgical coke. Two bituminous coals of different rank and thermoplastic properties were used as a base component of blends with plastic wastes such as high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), poly(ethylene terephthalate) (PET), and acrilonitrile-butadiene-styrene copolymer (ABS). In all cases, the addition of plastic waste led to a reduction in Gieseler maximum fluidity, the extent of the reduction depending on the fluidity of the base coal, and the amount, the molecular structure, and the thermal behavior of the polymer. As a consequence, the amount of volatile matter released by the plastic waste before, during, and after the maximum fluidity of the coal and the hydrogen-donor and hydrogen-acceptor capacities of the polymer were concluded to be key factors in influencing the extent of the reduction in fluidity and the development of anisotropic carbons. The incorporation of the plastic to the carbon matrix was clearly established in semicokes produced from blends of a high-fluid coal and the plastic tested by SEM examination. 42 refs., 10 figs., 7 tabs.

  2. Improvements on Taylor's Upper Bound for Rigid/Plastic Composites \\Lambda

    E-Print Network [OSTI]

    Olson, Tamara

    Improvements on Taylor's Upper Bound for Rigid/Plastic Composites \\Lambda Tamara Olson y Brigham of a mixture composed of anisotropic rigid/plastic materials. It is assumed that the only mechanism for deformation is plastic deformation of individual grains and that the set of stresses causing plastic flow (the

  3. Size effects on the onset of plastic deformation during nanoindentation of thin films and patterned lines

    E-Print Network [OSTI]

    Van Vliet, Krystyn J.

    Size effects on the onset of plastic deformation during nanoindentation of thin films and patterned; accepted 13 August 2003 Plastic deformation of materials exhibits a strong size dependence when, particularly the transition from elastic to plastic deformation and the early stages of plastic deformation. We

  4. Existence theory for finite-strain crystal plasticity with gradient regularization

    E-Print Network [OSTI]

    Mielke, Alexander

    Existence theory for finite-strain crystal plasticity with gradient regularization Alexander Mielke combine the formal ideas for single-crystal plasticity from [OrR99, Mie03] with the recent analytical and the plastic tensor P, which is driven by the plastic slip strain rates pj. We allow for self-hardening as well

  5. Plastic masters--rigid templates for soft lithography Salil P. Desai,a

    E-Print Network [OSTI]

    Voldman, Joel

    Plastic masters--rigid templates for soft lithography Salil P. Desai,a Dennis M. Freemanab and Joel plastic master molds for soft lithography directly from (poly)dimethysiloxane devices. Plastics masters without the need for cleanroom facilities. We have successfully demonstrated the use of plastics

  6. PLASTICITY OF ORIENTATION PROCESSING IN ADULT VISUAL CORTEX Valentin Dragoi and Mriganka Sur

    E-Print Network [OSTI]

    Sur, Mriganka

    1 PLASTICITY OF ORIENTATION PROCESSING IN ADULT VISUAL CORTEX Valentin Dragoi and Mriganka Sur title: Orientation plasticity in V1 No. of figures: 5 Address correspondence to: Mriganka Sur Department by experience, a phenomenon termed "plasticity", has been accumulating steadily. The first reports of plasticity

  7. Plastic yield surfaces of anisotropic porous materials in terms of effective electric conductivities

    E-Print Network [OSTI]

    Sevostianov, Igor

    Plastic yield surfaces of anisotropic porous materials in terms of effective electric University, 204 Anderson Hall, Medford, MA 02155, USA Received 10 December 2004 Abstract Plastic yield analysis of a plastic flow in a porous material. Interna- tional Journal of Plasticity 18, 1649­1659] show

  8. Development/Plasticity/Repair Dark Exposure Extends the Integration Window for

    E-Print Network [OSTI]

    Lee, Hey-Kyoung

    Development/Plasticity/Repair Dark Exposure Extends the Integration Window for Spike-Timing-Dependent Plasticity Yatu Guo,1,2 Shiyong Huang,1 Roberto de Pasquale,1 Kevin McGehrin,4 Hey-Kyoung Lee,1,3,4 Kanxing-timing-dependent plasticity, in which the polarity of plasticity is determined not by the stimulationfrequency

  9. PLASTIC RESINS INDUSTRY HIT HARD BY GLOBAL ECONOMIC RECESSION IN 2008

    E-Print Network [OSTI]

    Laughlin, Robert B.

    PLASTIC RESINS INDUSTRY HIT HARD BY GLOBAL ECONOMIC RECESSION IN 2008 The US plastic resins in the second half of the year. According to the American Chemistry Council (ACC) Plastics Industry Producers deficit in plastic products deteriorated from a $1.21 billion deficit in 2007 to a $2.36 billion deficit

  10. Treatment studies of paint stripping waste from plastic media blasting

    SciTech Connect (OSTI)

    Spence, R.D.

    1995-12-31

    Blasting with plastic media is used to strip paint and decontaminate surfaces. For disposal the plastic media is pulverized into a plastic dust. About 10 wt % of the waste from plastic media blasting is pulverized paint, which makes the waste a characteristically hazardous waste because of the presence of barium, cadmium, chromium and lead in the paint pigments. Four separate treatments of this hazardous waste were studied: (1) density separation to remove the paint, (2) self-encapsulation of the mix of plastic and paint dust into plastic pellets, (3) solidification/stabilization (S/S) into cementitious waste forms, and (4) low-temperature ashing to destroy the large mass of nonhazardous polymer. Two types of plast blasting wastes were studied: a urea formaldehyde thermoset polymer and an acrylic thermoplastic polymer (polymethylmethacrylate). Toxicity Characteristic Leach Procedure (TCLP) extraction concentrations for the treated and untreated wastes are listed. Density separation failed to adequately separate the paint with an aqueous carbonate solution. Self-encapsulation reduced the waste volume by about 50%, but did not meet TCLP criteria. Cementitious solidification gave the lowest TCLP concentrations, but increased the waste volume by about 50%. Low-temperature ashing at 600 C resulted in a mass decrease of 93 to 98% for the wastes; the metals remaining in the ash could be stabilized with cementitious solidification and still result in a volume decrease of 75 to 95 volume percent.

  11. Dislocation dynamics simulations of plasticity at small scales

    SciTech Connect (OSTI)

    Zhou, Caizhi

    2010-12-15

    As metallic structures and devices are being created on a dimension comparable to the length scales of the underlying dislocation microstructures, the mechanical properties of them change drastically. Since such small structures are increasingly common in modern technologies, there is an emergent need to understand the critical roles of elasticity, plasticity, and fracture in small structures. Dislocation dynamics (DD) simulations, in which the dislocations are the simulated entities, offer a way to extend length scales beyond those of atomistic simulations and the results from DD simulations can be directly compared with the micromechanical tests. The primary objective of this research is to use 3-D DD simulations to study the plastic deformation of nano- and micro-scale materials and understand the correlation between dislocation motion, interactions and the mechanical response. Specifically, to identify what critical events (i.e., dislocation multiplication, cross-slip, storage, nucleation, junction and dipole formation, pinning etc.) determine the deformation response and how these change from bulk behavior as the system decreases in size and correlate and improve our current knowledge of bulk plasticity with the knowledge gained from the direct observations of small-scale plasticity. Our simulation results on single crystal micropillars and polycrystalline thin films can march the experiment results well and capture the essential features in small-scale plasticity. Furthermore, several simple and accurate models have been developed following our simulation results and can reasonably predict the plastic behavior of small scale materials.

  12. Method of determining elastic and plastic mechanical properties of ceramic materials using spherical indenters

    DOE Patents [OSTI]

    Adler, Thomas A. (Corvallis, OR)

    1996-01-01

    The invention pertains a method of determining elastic and plastic mechanical properties of ceramics, intermetallics, metals, plastics and other hard, brittle materials which fracture prior to plastically deforming when loads are applied. Elastic and plastic mechanical properties of ceramic materials are determined using spherical indenters. The method is most useful for measuring and calculating the plastic and elastic deformation of hard, brittle materials with low values of elastic modulus to hardness.

  13. Company City State Contact Info 21st Century Plastics Corporation Potterville MI www.21stcpc.com

    E-Print Network [OSTI]

    McGaughey, Alan

    Engineered Plastics, LLC Auburn Hills MI www.deltaengineeredplastics.com Detrex Corporation.dutchlandplastics.com E & O Tool & Plastics, Inc. Elk River MN www.eoplastics.com E & T Plastic Rubber & Plastics Corp. Farmington Hills MI www.exoticautomation.com F & D Plastics, Inc

  14. Gradient Plasticity Model and its Implementation into MARMOT

    SciTech Connect (OSTI)

    Barker, Erin I.; Li, Dongsheng; Zbib, Hussein M.; Sun, Xin

    2013-08-01

    The influence of strain gradient on deformation behavior of nuclear structural materials, such as boby centered cubic (bcc) iron alloys has been investigated. We have developed and implemented a dislocation based strain gradient crystal plasticity material model. A mesoscale crystal plasticity model for inelastic deformation of metallic material, bcc steel, has been developed and implemented numerically. Continuum Dislocation Dynamics (CDD) with a novel constitutive law based on dislocation density evolution mechanisms was developed to investigate the deformation behaviors of single crystals, as well as polycrystalline materials by coupling CDD and crystal plasticity (CP). The dislocation density evolution law in this model is mechanism-based, with parameters measured from experiments or simulated with lower-length scale models, not an empirical law with parameters back-fitted from the flow curves.

  15. Method for formation of thin film transistors on plastic substrates

    DOE Patents [OSTI]

    Carey, P.G.; Smith, P.M.; Sigmon, T.W.; Aceves, R.C.

    1998-10-06

    A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The process relies on techniques for depositing semiconductors, dielectrics, and metals at low temperatures; crystallizing and doping semiconductor layers in the TFT with a pulsed energy source; and creating top-gate self-aligned as well as back-gate TFT structures. The process enables the fabrication of amorphous and polycrystalline channel silicon TFTs at temperatures sufficiently low to prevent damage to plastic substrates. The process has use in large area low cost electronics, such as flat panel displays and portable electronics. 5 figs.

  16. Method for formation of thin film transistors on plastic substrates

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Sigmon, Thomas W. (Portola Valley, CA); Aceves, Randy C. (Livermore, CA)

    1998-10-06

    A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The process relies on techniques for depositing semiconductors, dielectrics, and metals at low temperatures; crystallizing and doping semiconductor layers in the TFT with a pulsed energy source; and creating top-gate self-aligned as well as back-gate TFT structures. The process enables the fabrication of amorphous and polycrystalline channel silicon TFTs at temperatures sufficiently low to prevent damage to plastic substrates. The process has use in large area low cost electronics, such as flat panel displays and portable electronics.

  17. Technology Review: Angle Speeds Plastic Transistor http://www.technologyreview.com/articles/rnb_041304.asp 1 of 2 4/14/2004 8:24 PM

    E-Print Network [OSTI]

    Rogers, John A.

    Technology Review: Angle Speeds Plastic Transistor http > COMPUTERS AND ELECTRONICS > SEMICONDUCTORS Angle Speeds Plastic Transistor Technology Research News April 13. #12;Technology Review: Angle Speeds Plastic Transistor http

  18. Lattice-Boltzmann Method for Geophysical Plastic Flows

    E-Print Network [OSTI]

    Leonardi, Alessandro; Mendoza, Miller; Herrmann, Hans J

    2015-01-01

    We explore possible applications of the Lattice-Boltzmann Method for the simulation of geophysical flows. This fluid solver, while successful in other fields, is still rarely used for geotechnical applications. We show how the standard method can be modified to represent free-surface realization of mudflows, debris flows, and in general any plastic flow, through the implementation of a Bingham constitutive model. The chapter is completed by an example of a full-scale simulation of a plastic fluid flowing down an inclined channel and depositing on a flat surface. An application is given, where the fluid interacts with a vertical obstacle in the channel.

  19. Plasticity-Induced Magnetization in Amorphous Magnetic Solids

    E-Print Network [OSTI]

    H. George E. Hentschel; Itamar Procaccia; Bhaskar Sen Gupta

    2013-10-15

    Amorphous magnetic solids, like metallic glasses, exhibit a novel effect: the growth of magnetic order as a function of mechanical strain under athermal conditions in the presence of a magnetic field. The magnetic moment increases in steps whenever there is a plastic event. Thus plasticity induces the magnetic ordering, acting as the effective noise driving the system towards equilibrium. We present results of atomistic simulations of this effect in a model of a magnetic amorphous solid subjected to pure shear and a magnetic field. To elucidate the dependence on external strain and magnetic field we offer a mean-field theory that provides an adequate qualitative understanding of the observed phenomenon.

  20. Nonlinear elasto-plastic model for dense granular flow

    E-Print Network [OSTI]

    Ken Kamrin

    2009-05-07

    This work proposes a model for granular deformation that predicts the stress and velocity profiles in well-developed dense granular flows. Recent models for granular elasticity (Jiang and Liu 2003) and rate-sensitive plastic flow (Jop et al. 2006) are reformulated and combined into one universal granular continuum law, capable of predicting flowing regions and stagnant zones simultaneously in any arbitrary 3D flow geometry. The unification is performed by justifying and implementing a Kroner-Lee elasto-plastic decomposition, with care taken to ensure certain continuum physical principles are necessarily upheld. The model is then numerically implemented in multiple geometries and results are compared to experiments and discrete simulations.

  1. Design and Development of a Plastic Film Heat Exchanger 

    E-Print Network [OSTI]

    Guyer, E. C.; Gollin, M. K.; Brownell, D. L.

    1986-01-01

    condensing vapor. The low thermal conductivity of the plastic is off set by the use of thin films so that overall heat transfer rates are achieved which are comparable 'to conventional units. Potential.uses for such? a unit are low grade heat recovery... with the design of elements and manifolds are described together with an analysis of the thermal and hydraulic factors affecting the operation of the unit. INTRODUCTION The concept for the plastic film heat exchanger (PFHX) is that of individual heat...

  2. THE RESPONSE OF SOLIDS TO ELASTIC/PLASTIC INDENTATION AND THE APPLICATION OF INDENTATION TO ADHESION MEASUREMENTS

    E-Print Network [OSTI]

    Chiang, Shu-Sheng

    2013-01-01

    s, and the elastic and plastic properties~ E andY, of theI. Normalized Plastic Zone Size (B) and Material Propertiesthe material properties are not compatible (the plastic zone

  3. Assessing the benefits of design for recycling for plastics in electronics: A case study of computer enclosures

    E-Print Network [OSTI]

    Masanet, Eric; Horvath, Arpad

    2007-01-01

    Ten facts to know about plastics from consumer electronics,E.F. Stefanacci, Designing with plastics: considering partpp. 54–60. [6] American Plastics Council, A design guide for

  4. Elastic and plastic properties of soils influencing the design of rigid pavements 

    E-Print Network [OSTI]

    Khuri, Fuad I.

    1954-01-01

    This analytical model predicts the stress concentration around an elastic, spherical particle in an elastic-plastic metal matrix using strain gradient plasticity theory and a finite unit cell. The model reduces to the special case with a spherical...

  5. The unfinished miracle : how plastics came to be lost at sea

    E-Print Network [OSTI]

    Martinez, Amanda Rose

    2010-01-01

    Plastic trash is an increasingly significant source of pollution in the world's oceans. In some remote ocean regions, it is aggregating by the ton. This thesis investigates plastic trash as an emerging marine contaminant, ...

  6. Cellular/Molecular Spine Neck Plasticity Controls Postsynaptic Calcium Signals

    E-Print Network [OSTI]

    Oertner, Thomas

    as active electrical amplifiers (Segev and Rall, 1988). According to this theory, active spines couldCellular/Molecular Spine Neck Plasticity Controls Postsynaptic Calcium Signals through Electrical been proposed to function as electrical compartments for the active processing of local synaptic

  7. COMMUNICATION Structural Plasticity and the Evolution of Antibody

    E-Print Network [OSTI]

    Yin, Jun

    COMMUNICATION Structural Plasticity and the Evolution of Antibody Affinity and Specificity Jun Yin1-methyl- mesoporphyrin. A comparison of the X-ray crystal structures of the ligand-free germline Fab and its complex affinity for hapten and a loss in affinity for jeffamine. Moreover, a comparison of the crystal structures

  8. Plastic Surface Strain Mapping of Bent Sheets by Image Correlation

    E-Print Network [OSTI]

    Tong, Wei

    , the shape and surface plastic strain distribu- tions around a bent apex of a flat 2 mm thick automotive alu are widely used in making various electri- cal connectors and automotive components, respectively.2,3 Hemming of 5XXX and 6XXX series automotive aluminum alloys is often more problematic (because of surface

  9. Plant behavioural ecology: dynamic plasticity in secondary metabolites

    E-Print Network [OSTI]

    Aschehoug, Erik

    Plant behavioural ecology: dynamic plasticity in secondary metabolites KERRY L. METLEN, ERIK T induction and attenuation of plant secondary metabolites occur as chemically mediated root foraging, plant growth. Rapid and reversible secondary metabolite production and release is also a key mechanism by which

  10. Crystallization and doping of amorphous silicon on low temperature plastic

    DOE Patents [OSTI]

    Kaschmitter, J.L.; Truher, J.B.; Weiner, K.H.; Sigmon, T.W.

    1994-09-13

    A method or process of crystallizing and doping amorphous silicon (a-Si) on a low-temperature plastic substrate using a short pulsed high energy source in a selected environment, without heat propagation and build-up in the substrate is disclosed. The pulsed energy processing of the a-Si in a selected environment, such as BF3 and PF5, will form a doped micro-crystalline or poly-crystalline silicon (pc-Si) region or junction point with improved mobilities, lifetimes and drift and diffusion lengths and with reduced resistivity. The advantage of this method or process is that it provides for high energy materials processing on low cost, low temperature, transparent plastic substrates. Using pulsed laser processing a high (>900 C), localized processing temperature can be achieved in thin films, with little accompanying temperature rise in the substrate, since substrate temperatures do not exceed 180 C for more than a few microseconds. This method enables use of plastics incapable of withstanding sustained processing temperatures (higher than 180 C) but which are much lower cost, have high tolerance to ultraviolet light, have high strength and good transparency, compared to higher temperature plastics such as polyimide. 5 figs.

  11. Crystallization and doping of amorphous silicon on low temperature plastic

    DOE Patents [OSTI]

    Kaschmitter, James L. (Pleasanton, CA); Truher, Joel B. (Palo Alto, CA); Weiner, Kurt H. (Campbell, CA); Sigmon, Thomas W. (Beaverton, OR)

    1994-01-01

    A method or process of crystallizing and doping amorphous silicon (a-Si) on a low-temperature plastic substrate using a short pulsed high energy source in a selected environment, without heat propagation and build-up in the substrate. The pulsed energy processing of the a-Si in a selected environment, such as BF3 and PF5, will form a doped micro-crystalline or poly-crystalline silicon (pc-Si) region or junction point with improved mobilities, lifetimes and drift and diffusion lengths and with reduced resistivity. The advantage of this method or process is that it provides for high energy materials processing on low cost, low temperature, transparent plastic substrates. Using pulsed laser processing a high (>900.degree. C.), localized processing temperature can be achieved in thin films, with little accompanying temperature rise in the substrate, since substrate temperatures do not exceed 180.degree. C. for more than a few microseconds. This method enables use of plastics incapable of withstanding sustained processing temperatures (higher than 180.degree. C.) but which are much lower cost, have high tolerance to ultraviolet light, have high strength and good transparency, compared to higher temperature plastics such as polyimide.

  12. Plastic Hinging Behavior of Reinforced Concrete Bridge Columns

    E-Print Network [OSTI]

    Firat Alemdar, Zeynep

    2010-04-27

    of the seismic performance of four-span large-scale bridge systems at the University of Nevada Reno that details deformations in column hinging regions during response to strong shaking events. In order to evaluate the plastic hinging regions, a photogrammetric...

  13. Editor's Choice Editor's Choice: Crop Genome Plasticity and Its Relevance

    E-Print Network [OSTI]

    Parrott, Wayne

    . The term GE is preferred over the term "genetically modified" (commonly referred to as GMEditor's Choice Editor's Choice: Crop Genome Plasticity and Its Relevance to Food and Feed Safety of Genetically Engineered Breeding Stacks1 Genetically engineered (GE) stacks, combinations of two or more single

  14. Flexible plastic solar cells offer great advantages when compared with

    E-Print Network [OSTI]

    Langendoen, Koen

    Flexible plastic solar cells offer great advantages when compared with traditional silicon solar for a solar cell: extremely easy to produce, very cheap and with good perspectives for high efficiencies. Since ten years considerable progress has been made in developing new and very promising types of solar

  15. Gap junction-mediated electrical transmission: Regulatory mechanisms and plasticity

    E-Print Network [OSTI]

    Rash, John E.

    Gap junction-mediated electrical transmission: Regulatory mechanisms and plasticity Alberto E of synaptic transmission: chemical and electrical. While most efforts have been dedicated to the understanding in revised form 16 May 2012 Accepted 23 May 2012 Available online 31 May 2012 Keywords: Electrical synapse

  16. A Research Needs Assessment for waste plastics recycling: Volume 2, Project report. Final report

    SciTech Connect (OSTI)

    1994-12-01

    This second volume contains detailed information on a number of specific topics relevant to the recovery/recycling of plastics.

  17. Technical specifications for mechanical recycling of agricultural plastic waste

    SciTech Connect (OSTI)

    Briassoulis, D. Hiskakis, M.; Babou, E.

    2013-06-15

    Highlights: • Technical specifications for agricultural plastic wastes (APWs) recycling proposed. • Specifications are the base for best economical and environmental APW valorisation. • Analysis of APW reveals inherent characteristics and constraints of APW streams. • Thorough survey on mechanical recycling processes and industry as it applies to APW. • Specifications for APW recycling tested, adjusted and verified through pilot trials. - Abstract: Technical specifications appropriate for the recycling of agricultural plastic wastes (APWs), widely accepted by the recycling industry were developed. The specifications establish quality standards to be met by the agricultural plastics producers, users and the agricultural plastic waste management chain. They constitute the base for the best economical and environmental valorisation of the APW. The analysis of the APW streams conducted across Europe in the framework of the European project “LabelAgriWaste” revealed the inherent characteristics of the APW streams and the inherent constraints (technical or economical) of the APW. The APW stream properties related to its recycling potential and measured during pilot trials are presented and a subsequent universally accepted simplified and expanded list of APW recycling technical specifications is proposed and justified. The list includes two sets of specifications, applied to two different quality categories of recyclable APW: one for pellet production process (“Quality I”) and another one for plastic profile production process (“Quality II”). Parameters that are taken into consideration in the specifications include the APW physical characteristics, contamination, composition and degradation. The proposed specifications are focused on polyethylene based APW that represents the vast majority of the APW stream. However, the specifications can be adjusted to cover also APW of different materials (e.g. PP or PVC) that are found in very small quantities in protected cultivations in Europe. The adoption of the proposed specifications could transform this waste stream into a labelled commodity traded freely in the market and will constitute the base for the best economical and environmental valorisation of the APW.

  18. The waves of damage in elastic-plastic lattices with waiting links: design and simulation

    E-Print Network [OSTI]

    Cherkaev, Andrej

    The waves of damage in elastic-plastic lattices with waiting links: design and simulation A, Salt Lake City, UT 84112, USA Abstract We consider protective structures with elastic-plastic links: Protective structure, Elastic-plastic material, Necking, Bistability, Partial damage, Collision, Waves

  19. OPTIMIZATION OF A THERMO-ELASTO-PLASTIC PROCESS USING EULERIAN SENSITIVITY ANALYSIS

    E-Print Network [OSTI]

    Michaleris, Panagiotis

    OPTIMIZATION OF A THERMO-ELASTO-PLASTIC PROCESS USING EULERIAN SENSITIVITY ANALYSIS P. Michaleris of quasi-state one-way coupled thermo-elasto-plastic systems has been developed. The formulation. The formulation accounts for non-linear heat conduction, and temperature dependent elasto- plasticity. A mixed

  20. A CAVITATION TRACKING METHOD FOR ELASTIC-PLASTIC FLOW IN SOLIDS

    E-Print Network [OSTI]

    Shyue, Keh-Ming

    A CAVITATION TRACKING METHOD FOR ELASTIC-PLASTIC FLOW IN SOLIDS Keh-Ming Shyue Department tracking approach for the numerical simulation of one-dimensional elastic- plastic flow in solids, and the von Mises condition for the elastic-plastic phase change. To characterize the cavitation

  1. A plane stress anisotropic plastic flow theory for orthotropic sheet metals

    E-Print Network [OSTI]

    Tong, Wei

    A plane stress anisotropic plastic flow theory for orthotropic sheet metals Wei Tong * Department for describing the anisotropic plastic flow of ortho- tropic polycrystalline aluminum sheet metals under plane anisotropic material functions to specify a flow potential, an associated flow rule of plastic strain rates

  2. JOURNAL OF MATERIALS SCIENCE 36 (2001) 2851 2863 A crystal plasticity materials constitutive model

    E-Print Network [OSTI]

    Grujicic, Mica

    2001-01-01

    JOURNAL OF MATERIALS SCIENCE 36 (2001) 2851­ 2863 A crystal plasticity materials constitutive model using a three-dimensional, isothermal, rate-dependent, large-strain, crystal-plasticity based materials in the crystal-plasticity materials constitutive relations are assessed using the available experimental

  3. A framework for numerical integration of crystal elasto-plastic constitutive equations compatible

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    A framework for numerical integration of crystal elasto-plastic constitutive equations compatible integration scheme for elasto-plastic response of single crystals. This is intended to be compatible for anisotropic elastic and plastic response of crystals. The crystallographic axes of the lattice are explicitly

  4. Relaxation dynamics and ionic conductivity in a fragile plastic crystal Th. Bauer,1

    E-Print Network [OSTI]

    Angell, C. Austen

    Relaxation dynamics and ionic conductivity in a fragile plastic crystal Th. Bauer,1 M. Köhler,1 P is investigated by broadband dielectric spectroscopy in the liquid, plastic crystalline, and glassy crystal phases with Freon112, this material stands out among all other plastic crystals by being a relatively fragile glass

  5. On the numerical relaxation of single-slip plasticity in finite strains

    E-Print Network [OSTI]

    Moroz, Vitaly

    ;[2] Conti S., Relaxation of single-slip single-crystal plasticity with linear self-hardening, In: Proceed., Orlando A., Mixed analytical-numerical relaxation in single-slip crystal plasticity, AcceptedOn the numerical relaxation of single-slip plasticity in finite strains Antonio Orlando (Swansea

  6. Modeling cyclic ratcheting based fatigue life of HSLA steels using crystal plasticity FEM simulations and experiments

    E-Print Network [OSTI]

    Ghosh, Somnath

    Modeling cyclic ratcheting based fatigue life of HSLA steels using crystal plasticity FEM of results from experiments and finite element simulations using crystal plasticity constitutive relations the simulated results with experiments. A crystal plasticity based FEM (CPFEM) model is used in this paper

  7. ORIGINAL PAPER The legacy of crystal-plastic deformation in olivine

    E-Print Network [OSTI]

    Jung, Haemyeong

    ORIGINAL PAPER The legacy of crystal-plastic deformation in olivine: high-diffusivity pathways Abstract Crystal-plastic olivine deformation to produce subgrain boundaries composed of edge dislocations is an inevitable consequence of asthenospheric mantle flow. Although crystal-plastic deformation

  8. JOURNAL OF MATERIALS SCIENCE 38 (2003) 307 322 Crystal plasticity-based finite element analysis

    E-Print Network [OSTI]

    Grujicic, Mica

    2003-01-01

    JOURNAL OF MATERIALS SCIENCE 38 (2003) 307­ 322 Crystal plasticity-based finite element analysis-dependent, finite-strain, crystal-plasticity based materials constitutive model is used to represent the deformation obtained show that plastic flow localizes into deformation bands even at an overall strain level of only 0

  9. Orientation-Dependent Plasticity in Metal Nanowires under Torsion: Twist Boundary

    E-Print Network [OSTI]

    Cai, Wei

    with strain gradient plasticity theory.4 However, many of the materials are single crystals at these scales, surprisingly little is known about the plastic response of single crystal microwires in torsion. In wires under investigate the plastic response of pristine single crystal nanowires in torsion using molecular dynamics (MD

  10. A Performance-Based Approach to the Development of a Recycled Plastic/Composite Crosstie

    E-Print Network [OSTI]

    of the specification in item I. · Conduct laboratory tests to confirm the properties of the plastic/composite tieA Performance-Based Approach to the Development of a Recycled Plastic/Composite Crosstie Thomas Nosker, Ph.D., Richard Renfree Ph.D., and Jennifer Lynch Plastics & Composites Group, Rutgers University

  11. Learning Key Contexts of Use in the Wild for Driving Plastic User Interfaces Engineering

    E-Print Network [OSTI]

    while preserving user-centered properties. In plasticity, a classical approach consists in concentrating preserving user-centered properties [10]. In plasticity, most of the works so far make the implicitLearning Key Contexts of Use in the Wild for Driving Plastic User Interfaces Engineering Vincent

  12. Adiabatic shear banding in ultrafine-grained Fe processed by severe plastic deformation

    E-Print Network [OSTI]

    Wei, Qiuming

    . Keywords: Shear bands; Severe plastic deformation; Ultrafine microstructure; Mechanical properties; DynamicAdiabatic shear banding in ultrafine-grained Fe processed by severe plastic deformation Q. Wei a December 2003; accepted 17 December 2003 Abstract We have investigated the plastic deformation behavior

  13. A new method for evaluating the plastic properties of materials through instrumented frictional sliding tests

    E-Print Network [OSTI]

    Dao, Ming

    A new method for evaluating the plastic properties of materials through instrumented frictional-electro-mechanical systems. This paper describes a new method for estimating the plastic properties, i.e. the yield strength analysis) uses dimensionless functions derived from computational simulations to extract plastic properties

  14. http://jrp.sagepub.com/ Journal of Reinforced Plastics and Composites

    E-Print Network [OSTI]

    Vaziri, Ashkan

    reinforcement on the mechanical properties of wood plastic Published by: http://www.sagepublications.com can variables and fiber reinforcement on the mechanical properties of wood plastic composites Mahdi Ashrafihttp://jrp.sagepub.com/ Journal of Reinforced Plastics and Composites http

  15. PERFORMANCE-BASED PLASTIC DESIGN METHOD FOR BUCKLING-RESTRAINED BRACED FRAMES

    E-Print Network [OSTI]

    Chao, Shih-Ho

    depends on the natural period of the structure, the modal properties, and the intended plastic drift ratioPERFORMANCE-BASED PLASTIC DESIGN METHOD FOR BUCKLING- RESTRAINED BRACED FRAMES D. R. Sahoo1 and S) by using the performance-based plastic design (PBPD) methodology. This method is based on energy

  16. The frictional sliding response of elasto-plastic materials in contact with a conical indenter

    E-Print Network [OSTI]

    Dao, Ming

    , a comprehensive study was undertaken to inves- tigate the effect of elasto-plastic properties, such as flow on carefully selected metallic systems in which the plastic properties were systematically controlled: Scratch test; Indentation; Elasto-plastic properties; Dimensional analysis; Finite element method; Scratch

  17. The autofluorescence of plastic materials and chips measured under laser irradiation

    E-Print Network [OSTI]

    Cincinnati, University of

    autofluorescence than the raw plastic materials from which they had been made. Introduction There can be littleThe autofluorescence of plastic materials and chips measured under laser irradiation Aigars Piruska on the web 1st November 2005 DOI: 10.1039/b508288a Plastic materials have the potential to substitute

  18. POLYMER MICROSTRUCTURED OPTICAL FIBERS -OVERVIEW OF THE NOVEL GEOMETRIES AND FUNCTIONAL PLASTICS FOR A

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    where, in my opinion, plastic MOFs can be an enabling and cost-effective technology. 2. Photonic bandgapPOLYMER MICROSTRUCTURED OPTICAL FIBERS - OVERVIEW OF THE NOVEL GEOMETRIES AND FUNCTIONAL PLASTICS in their structure hundreds of sub-micron layers of two different plastics for application in photonic textiles

  19. Development/Plasticity/Repair Dendritic Spine Dynamics Regulate the Long-Term Stability

    E-Print Network [OSTI]

    van Rossum, Mark

    Development/Plasticity/Repair Dendritic Spine Dynamics Regulate the Long-Term Stability of Synaptic Plasticity Cian O'Donnell,1,2 Matthew F. Nolan,3 and Mark C. W. van Rossum1 1Institute for Adaptive of Edinburgh, Edinburgh EH8 9XD, United Kingdom Long-term synaptic plasticity requires postsynaptic influx

  20. Plasticity of metal wires in torsion: Molecular dynamics and dislocation dynamics simulations

    E-Print Network [OSTI]

    Cai, Wei

    Plasticity of metal wires in torsion: Molecular dynamics and dislocation dynamics simulations t The orientation dependent plasticity in metal nanowires is investigated using molecular dynamics and dislocation wires controls the mechanisms of plastic deformation. For wires oriented along /1 1 0S, dislocations

  1. Elastic-Plastic Models for Stable Crack Growtht *James R. Rice

    E-Print Network [OSTI]

    Elastic-Plastic Models for Stable Crack Growtht by *James R. Rice Mareh 1973 'PCAbh ~ ~ e c.\\. (n do not fully recover their strain upon unloading. The idealized non-linear elastic (left) and rigid-plastic,. there is ~ strain concentration created at the cut-ahead tip in the rigid-plastic material and the deformation field

  2. Developmental Plasticity in Linear Genetic Programming Nicholas Freitag McPhee

    E-Print Network [OSTI]

    Poli, Riccardo

    Developmental Plasticity in Linear Genetic Programming Nicholas Freitag McPhee Division of Science numerous types of plasticity, where they respond both developmentally and behaviorally to environ- mental selection to act on these otherwise "invis- ible" genes. In contrast to biological plasticity, the vast

  3. Off-fault plasticity and earthquake rupture dynamics: 2. Effects of fluid saturation

    E-Print Network [OSTI]

    Off-fault plasticity and earthquake rupture dynamics: 2. Effects of fluid saturation Robert C slip-weakening behavior is specified, and the off-fault material is described using an elastic-plastic poroelastoplastic materials with and without plastic dilation. During nondilatant undrained response near

  4. Development/Plasticity/Repair Dendritic BDNF Synthesis Is Required for Late-Phase Spine

    E-Print Network [OSTI]

    Stryker, Michael

    Development/Plasticity/Repair Dendritic BDNF Synthesis Is Required for Late-Phase Spine Maturation paradigm for experience-dependent cortical development is called ocular dominance (OD) plasticity, where closing one eye for a few days during a critical period of heightened plasticity leads to marked decrease

  5. Plasticity contributions to interface adhesion in thin-film interconnect structures

    E-Print Network [OSTI]

    Vainchtein, Anna

    Plasticity contributions to interface adhesion in thin-film interconnect structures Michael Lanea of plasticity in thin copper layers on the interface fracture resistance in thin-film interconnect structures yield properties together with a plastic flow model for the metal layers were used to predict

  6. Plastic Deformation of Single Nanometer-Sized Crystals Litao Sun,1,2

    E-Print Network [OSTI]

    Nordlund, Kai

    Plastic Deformation of Single Nanometer-Sized Crystals Litao Sun,1,2 Arkady V. Krasheninnikov,3 observations of the plastic deformation of individual nanometer- sized Au, Pt, W, and Mo crystals. Specifically. The correlation with atomistic simulations shows that the observed slow plastic deformation is due to dislocation

  7. Phenotypic Plasticity of Leaf Shape along a Temperature Gradient in Acer rubrum

    E-Print Network [OSTI]

    Royer, Dana

    Phenotypic Plasticity of Leaf Shape along a Temperature Gradient in Acer rubrum Dana L. Royer1 plasticity and genetic determination can be important for understanding how plants respond to environmental change. However, little is known about the plastic response of leaf teeth and leaf dissection

  8. Plasticity of BCC micro-pillars controlled by competition between dislocation multiplication and depletion

    E-Print Network [OSTI]

    Cai, Wei

    1 Plasticity of BCC micro-pillars controlled by competition between dislocation multiplication, plasticity is governed mainly by the kinetics of dislocation motion, not their elastic interactions. Keywords: plasticity, micro-pillars, dislocation dynamics, stress-strain relations Acta Materialia, in press (2013) #12

  9. Morphogenesis, plasticity and irreversibility CHIKARA FURUSAWA1,3,* and KUNIHIKO KANEKO2,3

    E-Print Network [OSTI]

    Kaneko, Kunihiko

    Morphogenesis, plasticity and irreversibility CHIKARA FURUSAWA1,3,* and KUNIHIKO KANEKO2,3 1 the perspective of this theory and the relevance of dynamics of cellular plasticity is stressed. KEY WORDS: morphogenesis, plasticity, irreversibility, evolution Question to be addressed: origin of positional informa

  10. Cortical plasticity induced by transplantation of embryonic somatostatin or parvalbumin interneurons

    E-Print Network [OSTI]

    Stryker, Michael

    Cortical plasticity induced by transplantation of embryonic somatostatin or parvalbumin plasticity. We recently have shown that transplantation of GABAergic precursors from the embryonic medial, robust plasticity was observed in transplants contain- ing PV+ cells but in which the majority of SST

  11. Development/Plasticity/Repair Wiring Stability of the Adult Drosophila Olfactory Circuit

    E-Print Network [OSTI]

    Luo, Liqun

    Development/Plasticity/Repair Wiring Stability of the Adult Drosophila Olfactory Circuit after Institute of Molecular Pathology, 1030 Vienna, Austria Neuronal wiring plasticity in response to experience. Here, we assess wiring plasticity in a discrete neural map represented by the adult Drosophila

  12. An elasto-plastic damage model cast in a co-rotational kinematic framework for large

    E-Print Network [OSTI]

    Masud, Arif

    An elasto-plastic damage model cast in a co-rotational kinematic framework for large deformation an elasto-plastic damage model that is based on irreversible thermodynamics and internal state variable that is defined in terms of an internal damage variable of energy, along with a set of rate-independent elasto-plastic

  13. PLASTIC VERSUS ELASTIC DEFORMATION EFFECTS ON MAGNETIC BARKHAUSEN NOISE IN STEEL

    E-Print Network [OSTI]

    Clapham, Lynann

    PLASTIC VERSUS ELASTIC DEFORMATION EFFECTS ON MAGNETIC BARKHAUSEN NOISE IN STEEL C.-G. STEFANITA, D) AbstractÐA study was performed to dierentiate the eects of elastic and plastic deformation on magnetic samples subjected to varying degrees of uniaxial elastic and plastic deformation up to H40% strain

  14. Sites of Plasticity in the Neural Circuit Mediating Tentacle Withdrawal in the Snail

    E-Print Network [OSTI]

    Chase, Ronald

    Sites of Plasticity in the Neural Circuit Mediating Tentacle Withdrawal in the Snail Helix aspersa with the dual-process theory of plasticity. Habituation, sensitization, or a combination of both were elicited by varying stimulation parameters and lesion condition. Analysis of response plasticity shows that the late

  15. Development/Plasticity/Repair Simultaneous NMDA-Dependent Long-Term Potentiation of

    E-Print Network [OSTI]

    Segal, Menahem

    Development/Plasticity/Repair Simultaneous NMDA-Dependent Long-Term Potentiation of EPSCs and Long activity-dependent long-term plasticity of neuronal networks is the interplay between excitatory, whereas a nitric oxide synthase inhibitor was ineffec- tive. Finally, network-induced plasticity

  16. Plastic scintillators for positron emission tomography obtained by the bulk polymerization method

    E-Print Network [OSTI]

    Kap?on, ?ukasz; Molenda, Marcin; Moskal, Pawe?; Wieczorek, Anna; Bednarski, Tomasz; Bia?as, Piotr; Czerwi?ski, Eryk; Korcyl, Grzegorz; Kowal, Jakub; Kowalski, Pawe?; Kozik, Tomasz; Krzemie?, Wojciech; Nied?wiecki, Szymon; Pa?ka, Marek; Pawlik, Monika; Raczy?ski, Lech; Rudy, Zbigniew; Salabura, Piotr; Gupta-Sharma, Neha; Silarski, Micha?; S?omski, Artur; Smyrski, Jerzy; Strzelecki, Adam; Wi?licki, Wojciech; Zieli?ski, Marcin; Zo?, Natalia

    2015-01-01

    This paper describes three methods regarding the production of plastic scintillators. One method appears to be suitable for the manufacturing of plastic scintillator, revealing properties which fulfill the requirements of novel positron emission tomography scanners based on plastic scintillators. The key parameters of the manufacturing process are determined and discussed.

  17. THE CHRONICLE OF HIGHER EDUCATION From the issue dated February 28, 2003 One Word: Plastics

    E-Print Network [OSTI]

    : Plastics A group of researchers defies wisdom with polymer blends By LILA GUTERMAN Last fall, researchers into place. The 56-foot-long, one-lane bridge held special meaning for them: It was the world's first all-plastic exclusively from recycled plastics. The bridge was only the researchers' latest success. Tens of thousands

  18. Plasticity-Mediated Competitive Learning Nicol N. Schraudolph Terrence J. Sejnowski

    E-Print Network [OSTI]

    Schraudolph, Nicol N.

    Plasticity-Mediated Competitive Learning Nicol N. Schraudolph Terrence J. Sejnowski nici representations are computa- tionally unattractive. By letting neural plasticity mediate the com- petitive.50 1.00 -4.00 -2.00 0.00 2.00 4.00 Figure 1: Activity f and plasticity f of a logistic node

  19. Plasticity in the Rat Posterior Auditory Field Following Nucleus Basalis Stimulation

    E-Print Network [OSTI]

    Kilgard, Michael P.

    Plasticity in the Rat Posterior Auditory Field Following Nucleus Basalis Stimulation Amanda C. Plasticity in the rat posterior auditory field following nucleus basalis stimulation. J Neurophysiol 98: 253 have been shown to cause frequency-specific plasticity in both primary and secondary cortical areas

  20. Development/Plasticity/Repair STAT1 Regulates the Homeostatic Component of Visual

    E-Print Network [OSTI]

    Sur, Mriganka

    Development/Plasticity/Repair STAT1 Regulates the Homeostatic Component of Visual Cortical Plasticity via an AMPA Receptor-Mediated Mechanism Ikue Nagakura, Audra Van Wart, Jeremy Petravicz, Daniela signaling in neuronal function; however, its role in experience-dependent plasticity is unknown. Here we

  1. Dislocation reactions, plastic anisotropy and forest strengthening in MgO at high temperature

    E-Print Network [OSTI]

    Devincre, Benoit

    Dislocation reactions, plastic anisotropy and forest strengthening in MgO at high temperature J 2013 Available online 18 January 2014 Keywords: MgO Plasticity Dislocation Dynamics simulation Forest by forest reactions. Impor- tant parameters for dislocation density based modeling of MgO plasticity

  2. THE ELASTIC-PLASTIC MECHANICS OF CRACK EXTENSION James R. Rice*

    E-Print Network [OSTI]

    THE ELASTIC-PLASTIC MECHANICS OF CRACK EXTENSION James R. Rice* ABSTRACT This paper briefly reviews progres~in the elastic plastic analysisof crack extension. Analytical results for plane strain and plane stress deformation fields are noted, and elastic-plastic fracture instability as well as transitional

  3. Measurement of the exit characteristics of light from optical multimode plastic fibres

    E-Print Network [OSTI]

    Hebbeker, Thomas

    Measurement of the exit characteristics of light from optical multimode plastic fibres von Simon multimode plastic fibres are an essential part of many detectors used in modern particle physics experiments the functionality of the simulation software. #12;Contents 1 Introduction 1 2 Optical Multimode Plastic Fibres 5 2

  4. Parametric dislocation dynamics: A thermodynamics-based approach to investigations of mesoscopic plastic deformation

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    plastic deformation N. M. Ghoniem, S.-H. Tong, and L. Z. Sun Mechanical and Aerospace Engineering 3D interacting dislocation loops. The approach is appropriate for investigations of plastic defor formation of dislocation junctions. I. INTRODUCTION A fundamental description of plastic deformation is now

  5. CAMELEON-RT: a Software Architecture Reference Model for Distributed, Migratable, and Plastic User

    E-Print Network [OSTI]

    CAMELEON-RT: a Software Architecture Reference Model for Distributed, Migratable, and Plastic User the problem space of distributed, migratable and plastic user interfaces, and presents CAMELEON-RT1 for distributed, migratable, and plastic user inter- faces. We have developed an early implementation of a run

  6. Modeling elastic and plastic deformations in nonequilibrium processing using phase field crystals K. R. Elder1

    E-Print Network [OSTI]

    Grant, Martin

    Modeling elastic and plastic deformations in nonequilibrium processing using phase field crystals K November 2004) A continuum field theory approach is presented for modeling elastic and plastic deformation the construction of a phase field model for the dynamics of crystal growth that includes elastic and plastic

  7. Thermo-elasto-plastic finite element analysis of quasi-state processes in Eulerian reference

    E-Print Network [OSTI]

    Michaleris, Panagiotis

    Thermo-elasto-plastic finite element analysis of quasi-state processes in Eulerian reference frames ­ Incremental scheme ­ Fine mesh along entire heat source path ­ Lengthy computer runs · Elasto-Plasticity at times ti and ti-1, respectively. Penn State University 5 #12;Elasto-Plasticity Equilibrium: r(r, t) + b

  8. 1 INTRODUCTION The plastic behavior of a certain powder or soil sam-

    E-Print Network [OSTI]

    Luding, Stefan

    1 INTRODUCTION The plastic behavior of a certain powder or soil sam- ple depends on the history in order to in- vestigate the elasto-plastic response of granular ma- terials. An alternative is obtained by the calculation of the interaction forces between parti- cles. This includes, e.g., plastic

  9. An accurate elasto-plastic frictional tangential forcedisplacement model for granular-flow

    E-Print Network [OSTI]

    Vu-Quoc, Loc

    An accurate elasto-plastic frictional tangential force­displacement model for granular for both elastic and plastic deformations together with interfacial friction occurring in collisions of spherical particles. This elasto-plastic frictional TFD model, with its force-driven version presented in [L

  10. On perfectly plastic flow in porous material T.I. Zohdi*,a

    E-Print Network [OSTI]

    Sevostianov, Igor

    On perfectly plastic flow in porous material T.I. Zohdi*,a , M. Kachanovb , I. Sevostianovc in final revised form 15 December 2001 Abstract Experimental observations suggest that for perfectly-plastic of the pores and their orientation. The underlying microscale mechanism is that local plastic ``pockets'' near

  11. Necessary conditions for the optimality of an extrusion die for a rigid-plastic material

    E-Print Network [OSTI]

    Weinberger, Hans

    Necessary conditions for the optimality of an extrusion die for a rigid-plastic material Hans F, 2002 to appear in Meccanica Key words: rigid-plastic, extrusion, die, optimal To my friend Piero Villagio Abstract Conditions which must be satis#12;ed by the steady ow of a rigid- plastic material

  12. Improved Bounds on the Effective Yield Surface of Inhomogeneous Rigid/Plastic Materials

    E-Print Network [OSTI]

    Olson, Tamara

    Improved Bounds on the Effective Yield Surface of Inhomogeneous Rigid/Plastic Materials Tamara January 1993 Abstract The yield surface of a mixture of rigid/perfectly­plastic materials is examined plasticity under suffi­ ciently large stress. The set of stresses at which the deformation changes from

  13. Mitigating Effects of Plastic Surgery: Fusing Face and Ocular Biometrics Raghavender Jillela and Arun Ross

    E-Print Network [OSTI]

    Ross, Arun Abraham

    Mitigating Effects of Plastic Surgery: Fusing Face and Ocular Biometrics Raghavender Jillela.Ross}@mail.wvu.edu Abstract The task of successfully matching face images obtained before and after plastic surgery is a challenging problem. The degree to which a face is altered depends on the type and number of plastic surgeries

  14. P-124 / J. Osterman P-124: Properties of Azo-Dye Alignment Layer on Plastic Substrates

    E-Print Network [OSTI]

    P-124 / J. Osterman P-124: Properties of Azo-Dye Alignment Layer on Plastic Substrates Jesper/SDA-2 on plastic substrates are investigated. Excellent alignment with high anchoring energy can manufactured with plastic substrates have the advantage of being thin, lightweight and more mechanically robust

  15. Nanoscale Anisotropic Plastic Deformation in Single Crystal Aragonite C. Kearney,1

    E-Print Network [OSTI]

    Nanoscale Anisotropic Plastic Deformation in Single Crystal Aragonite C. Kearney,1 Z. Zhao,2 B. J; published 30 June 2006) The nanoscale anisotropic elastic-plastic behavior of single-crystal aragonite coaxial to the c axis exhibited load plateaus indicative of dislocation nucleation events. Plasticity

  16. RATE SENSITIVITY OF PLASTIC FLOW AND IMPLICATIONS FOR YIELD-SURFACE VERTICES

    E-Print Network [OSTI]

    RATE SENSITIVITY OF PLASTIC FLOW AND IMPLICATIONS FOR YIELD-SURFACE VERTICES Jwo PAN Stress; in recked form 29 Norember 1982) &tract-When crystalline slip is considered as the micromechanism of plastic sensitivity of plastic flow may be central to understanding the ambiguous conclusions from experimental

  17. FINITE-ELEMENT FORMULATIONS FOR PROBLEMS OF LARGE ELASTIC-PLASTIC DEFORMATION

    E-Print Network [OSTI]

    FINITE-ELEMENT FORMULATIONS FOR PROBLEMS OF LARGE ELASTIC-PLASTIC DEFORMATION R. M. MCM~EKING and J elastic-plastic flow.The method is based on Hill's variational principle for incremental deformations in a manner which allows any conventions finite element program, for "small strain" elastic-plastic analysis

  18. Bendable single crystal silicon thin film transistors formed by printing on plastic substrates

    E-Print Network [OSTI]

    Rogers, John A.

    Bendable single crystal silicon thin film transistors formed by printing on plastic substrates E on plastic substrates using an efficient dry transfer printing technique. In these devices, free standing-Si is then transferred, to a specific location and with a controlled orientation, onto a thin plastic sheet

  19. Developmental plasticity of cutaneous water loss and lipid composition in stratum corneum of desert

    E-Print Network [OSTI]

    Williams, Jos. B.

    Developmental plasticity of cutaneous water loss and lipid composition in stratum corneum of desert and cerebrosides in the SC compared with mesic spar- rows. In this study, we investigated developmental plasticity modifications of the lipid composition of the SC. The expression of plasticity in CWL seems to be a response

  20. Robustness of Learning That Is Based on Covariance-Driven Synaptic Plasticity

    E-Print Network [OSTI]

    Robustness of Learning That Is Based on Covariance- Driven Synaptic Plasticity Yonatan Loewenstein of synaptic plasticity rules, in which synaptic changes are driven by covariance, is particularly useful. Covariance-based plasticity is inherently sensitive. Even a slight mistuning of the parameters

  1. Bath Institute for Complex Systems A model of shape memory alloys accounting for plasticity

    E-Print Network [OSTI]

    Scheichl, Robert

    BICS Bath Institute for Complex Systems A model of shape memory alloys accounting for plasticity://www.bath.ac.uk/math-sci/BICS #12;A model of shape memory alloys accounting for plasticity Martin Kruz´ika & Johannes Zimmerb the possibility of plastic deformation is taken in to account. Two dissipative mechanisms are considered, namely

  2. Cortical Map Plasticity Improves Learning but Is Not Necessary for Improved Performance

    E-Print Network [OSTI]

    Kilgard, Michael P.

    Neuron Article Cortical Map Plasticity Improves Learning but Is Not Necessary for Improved.02.038 SUMMARY Cortical map plasticity is believed to be a key substrate of perceptual and skill learning of the cholinergic nucleus basalis to induce auditory cortex map plasticity outside of a behavioral context. Our

  3. Developmental plasticity of thermal tolerances in temperate and subtropical populations of Drosophila melanogaster

    E-Print Network [OSTI]

    Angilletta, Michael

    Developmental plasticity of thermal tolerances in temperate and subtropical populations plasticity Drosophila melanogaster Knockdown time Temperature Thermal tolerance a b s t r a c t Variation or plastic strategies that enable persistence over a broad range of temperatures. In coarse

  4. Nathan R. Wilson and Mriganka Sur Determinants of Synaptic and Circuit Plasticity

    E-Print Network [OSTI]

    Sur, Mriganka

    148 Nathan R. Wilson and Mriganka Sur Determinants of Synaptic and Circuit Plasticity 7 Determinants of Synaptic and Circuit Plasticity in the Cerebral Cortex Implications for Neurodevelopmental Disorders Nathan R. Wilson and Mriganka Sur "Cortical plasticity" encompasses a broad set of mechanisms

  5. Mapping Model: A First Step to Ensure Usability for sustaining User Interface Plasticity

    E-Print Network [OSTI]

    Mapping Model: A First Step to Ensure Usability for sustaining User Interface Plasticity Jean plasticity. Until now, efforts have been put on the functional aspect of adaptation, neglecting the usability Interface (UI). They break when the UI goes outside its plasticity domain. Categories and Subject

  6. vol. 168, no. 3 the american naturalist september 2006 Experimental Evolution of Phenotypic Plasticity

    E-Print Network [OSTI]

    Fox, Charles W.

    Plasticity: How Predictive Are Cross-Environment Genetic Correlations?* Mary Ellen Czesak,1, Charles W. Fox,2 correlation predicts correlated responses to selection and the evolution of phenotypic plasticity in the seed beetle Stator limbatus. This beetle exhibits adaptive plasticity in egg size by laying large eggs

  7. ARTICLE Communicated by Erkki Oja Synergies Between Intrinsic and Synaptic Plasticity

    E-Print Network [OSTI]

    Triesch, Jochen

    ARTICLE Communicated by Erkki Oja Synergies Between Intrinsic and Synaptic Plasticity Mechanisms of California, San Diego, La Jolla, CA 92093-0515, U.S.A. We propose a model of intrinsic plasticity plasticity mechanisms interact and allow the neuron to discover heavy-tailed directions in the input. We also

  8. Super-Elastic and Plastic Shock Waves Generated by Lasers N.A. Inogamov a,1

    E-Print Network [OSTI]

    Fominov, Yakov

    Super-Elastic and Plastic Shock Waves Generated by Lasers N.A. Inogamov a,1 , V.V. Zhakhovsky b,3 away the elastic wave, instead of overrun it. Prior to that, people thought that the generated together there is an elastic shock wave (SW), which propagates before the strong plastic shock with plastic pressures of up

  9. Environmental stress and the costs of whole-organism phenotypic plasticity in tadpoles

    E-Print Network [OSTI]

    Environmental stress and the costs of whole-organism phenotypic plasticity in tadpoles U. K Biological Sciences, Stanford University, Stanford, CA, USA Introduction Costs of plasticity play a central role in evolutionary theory. These costs are recognized when plastic geno- types have relatively low

  10. Evolution of gene expression and expression plasticity in long-term experimental populations of Drosophila

    E-Print Network [OSTI]

    Fry, James D.

    Evolution of gene expression and expression plasticity in long-term experimental populations to a particular type of stress involves changes in the within- generation (`plastic') responses of gene expression to the stress. We used microarrays to quantify gene expression plasticity in response to ethanol in laboratory

  11. Development/Plasticity/Repair A Specific Requirement of Arc/Arg3.1 for Visual

    E-Print Network [OSTI]

    Lee, Hey-Kyoung

    Development/Plasticity/Repair A Specific Requirement of Arc/Arg3.1 for Visual Experience-Induced Homeostatic Synaptic Plasticity in Mouse Primary Visual Cortex Ming Gao,1 Kenneth Sossa,1 Lihua Song,1 Lauren.OurresultsdemonstratethatArc/Arg3.1playsaselectiveroleinregulatingvisualexperience-dependent homeostatic plasticity of excitatory

  12. Symmetry group analysis of an ideal plastic flow

    E-Print Network [OSTI]

    Vincent Lamothe

    2011-02-11

    In this paper, we study the Lie point symmetry group of a system describing an ideal plastic plane flow in two dimensions in order to find analytical solutions. The infinitesimal generators that span the Lie algebra for this system are obtained. We completely classify the subalgebras of up to codimension two in conjugacy classes under the action of the symmetry group. Based on invariant forms, we use Ansatzes to compute symmetry reductions in such a way that the obtained solutions cover simultaneously many invariant and partially invariant solutions. We calculate solutions of the algebraic, trigonometric, inverse trigonometric and elliptic type. Some solutions depending on one or two arbitrary functions of one variable have also been found. In some cases, the shape of a potentially feasible extrusion die corresponding to the solution is deduced. These tools could be used to thin, curve, undulate or shape a ring in an ideal plastic material.

  13. Methods for the continuous production of plastic scintillator materials

    DOE Patents [OSTI]

    Bross, Alan (Downers Grove, IL); Pla-Dalmau, Anna (Naperville, IL); Mellott, Kerry (Malta, IL)

    1999-10-19

    Methods for producing plastic scintillating material employing either two major steps (tumble-mix) or a single major step (inline-coloring or inline-doping). Using the two step method, the polymer pellets are mixed with silicone oil, and the mixture is then tumble mixed with the dopants necessary to yield the proper response from the scintillator material. The mixture is then placed in a compounder and compounded in an inert gas atmosphere. The resultant scintillator material is then extruded and pelletized or formed. When only a single step is employed, the polymer pellets and dopants are metered into an inline-coloring extruding system. The mixture is then processed under a inert gas atmosphere, usually argon or nitrogen, to form plastic scintillator material in the form of either scintillator pellets, for subsequent processing, or as material in the direct formation of the final scintillator shape or form.

  14. Final LDRD report : advanced plastic scintillators for neutron detection.

    SciTech Connect (OSTI)

    Vance, Andrew L.; Mascarenhas, Nicholas; O'Bryan, Greg; Mrowka, Stanley

    2010-09-01

    This report summarizes the results of a one-year, feasibility-scale LDRD project that was conducted with the goal of developing new plastic scintillators capable of pulse shape discrimination (PSD) for neutron detection. Copolymers composed of matrix materials such as poly(methyl methacrylate) (PMMA) and blocks containing trans-stilbene (tSB) as the scintillator component were prepared and tested for gamma/neutron response. Block copolymer synthesis utilizing tSBMA proved unsuccessful so random copolymers containing up to 30% tSB were prepared. These copolymers were found to function as scintillators upon exposure to gamma radiation; however, they did not exhibit PSD when exposed to a neutron source. This project, while falling short of its ultimate goal, demonstrated the possible utility of single-component, undoped plastics as scintillators for applications that do not require PSD.

  15. A Mathematical Model of Tripartite Synapse: Astrocyte Induced Synaptic Plasticity

    E-Print Network [OSTI]

    Shivendra Tewari; Kaushik Majumdar

    2012-03-12

    In this paper we present a biologically detailed mathematical model of tripartite synapses, where astrocytes modulate short-term synaptic plasticity. The model consists of a pre-synaptic bouton, a post-synaptic dendritic spine-head, a synaptic cleft and a peri-synaptic astrocyte controlling Ca2+ dynamics inside the synaptic bouton. This in turn controls glutamate release dynamics in the cleft. As a consequence of this, glutamate concentration in the cleft has been modeled, in which glutamate reuptake by astrocytes has also been incorporated. Finally, dendritic spine-head dynamics has been modeled. As an application, this model clearly shows synaptic potentiation in the hippocampal region, i.e., astrocyte Ca2+ mediates synaptic plasticity, which is in conformity with the majority of the recent findings (Perea & Araque, 2007; Henneberger et al., 2010; Navarrete et al., 2012).

  16. Are Plastic Toys Hurting Our Pets? | Care2 Causes http://www.care2.com/causes/are-plastic-toys-hurting-our-pets.html[12/6/2012 8:12:04 AM

    E-Print Network [OSTI]

    Rock, Chris

    Are Plastic Toys Hurting Our Pets? | Care2 Causes http://www.care2.com/causes/are-plastic:00 pm 28 4 0 43 Are Plastic Toys Hurting Our Pets? A new study from Texas Tech University has found that plastic toys, such as bumper toys used for training, may be exposing our dogs to harmful chemicals

  17. Technology and future prospects for lightweight plastic vehicle structures

    SciTech Connect (OSTI)

    Stodolsky, F.; Cuenca, R.M.; Bonsignore, P.V.

    1997-08-01

    The state of the technology and the materials and processing issues of using plastics in vehicle body applications (structural and semistructural) were assessed. Plastics are significantly lighter in weight, more easily fabricated into complex shapes, and more corrosion resistance than sheet steel, high-strength steel, or aluminum. However, at their current stage of development, plastics are deficient in one or more necessary properties: heat resistance and dimensional stability, stiffness and tensile strength, toughness, and impact resistance. To upgrade their physical properties for automotive chassis/body applications, plastics need to be compounds with suitable reinforcing fibers. As a short-term approach, the material of choice is a composite structure made with low-cost glass-fiber reinforcement, such as that made in the resin-transfer-molding (RTM) process and used in the body of the Dodge Viper. However, RTM technology based on thermosets requires a processing cycle time that is too long for large production runs. Adaptation of RTM to the formation of thermoplastic composite bodies could have a significant advantage over thermoset technology. Cyclic oligomers, which are precursors to thermoplastic matrix polymers, show promise for this application. Farther on the horizon are advanced composites compounds with the much more expensive (but stronger and stiffer) carbon-fiber reinforcement. However, significant price reductions of precursor materials and advances in processing and fabrication would be needed. Other materials holding promise are liquid crystal polymers (LCP) and LCP blends with other polymers (molecular composites). However, the cost of monomers and the subsequent polymerization technology also remains a considerable drawback to the widespread and increasing acceptance of LCPs.

  18. Repairs for damaged bolt holes in continuous fiber reinforced plastics 

    E-Print Network [OSTI]

    Copps, Kevin Daniel

    1992-01-01

    of fastened joints and to investigate previous techniques for the repair of continuous fiber reinforced plastics. LITERATURE REVIEW Characterizing Failure Modes There is very little agreement about what conditions constitute failure in composite joints... of possible methods for preventing and repairing fastener hole defects. Proper drilling technique The optimal drilling conditions for fiber reinforced parts are hard to control, and can differ depending on the structural application. The proper technique...

  19. Compacting Plastic-Bonded Explosive Molding Powders to Dense Solids

    SciTech Connect (OSTI)

    B. Olinger

    2005-04-15

    Dense solid high explosives are made by compacting plastic-bonded explosive molding powders with high pressures and temperatures for extended periods of time. The density is influenced by manufacturing processes of the powders, compaction temperature, the magnitude of compaction pressure, pressure duration, and number of repeated applications of pressure. The internal density variation of compacted explosives depends on method of compaction and the material being compacted.

  20. Low temperature fracture evaluation of plasticized sulfur paving mixtures 

    E-Print Network [OSTI]

    Mahboub, Kamyar

    1985-01-01

    . Characterize the fracture behavior of sulphlex binders by using the elastic-plastic critical energy release rate, J C. 2. Approximate the fracture toughness of the material, KIC, by the KO parameter and establish a correlation between KO and JIC parameters... concentrations leading to failure of a structural component. The first analysis of fracture behavior of britt! e materials containing sharp flaws was developed by Griffith (16). He considered a very large plate with a sharp crack of length 2a passing...

  1. Pre-release plastic packaging of MEMS and IMEMS devices

    DOE Patents [OSTI]

    Peterson, Kenneth A. (Albuquerque, NM); Conley, William R. (Tijeras, NM)

    2002-01-01

    A method is disclosed for pre-release plastic packaging of MEMS and IMEMS devices. The method can include encapsulating the MEMS device in a transfer molded plastic package. Next, a perforation can be made in the package to provide access to the MEMS elements. The non-ablative material removal process can include wet etching, dry etching, mechanical machining, water jet cutting, and ultrasonic machining, or any combination thereof. Finally, the MEMS elements can be released by using either a wet etching or dry plasma etching process. The MEMS elements can be protected with a parylene protective coating. After releasing the MEMS elements, an anti-stiction coating can be applied. The perforating step can be applied to both sides of the device or package. A cover lid can be attached to the face of the package after releasing any MEMS elements. The cover lid can include a window for providing optical access. The method can be applied to any plastic packaged microelectronic device that requires access to the environment, including chemical, pressure, or temperature-sensitive microsensors; CCD chips, photocells, laser diodes, VCSEL's, and UV-EPROMS. The present method places the high-risk packaging steps ahead of the release of the fragile portions of the device. It also provides protection for the die in shipment between the molding house and the house that will release the MEMS elements and subsequently treat the surfaces.

  2. Comparison of isotropic elasto-plastic models for the plastic metric tensor $C_p=F_p^T\\, F_p$

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba

    2014-10-08

    We discuss in detail existing isotropic elasto-plastic models based on 6-dimensional flow rules for the positive definite plastic metric tensor $C_p=F_p^T\\, F_p$ and highlight their properties and interconnections. We show that seemingly different models are equivalent in the isotropic case.

  3. Comparison of isotropic elasto-plastic models for the plastic metric tensor $C_p=F_p^T\\, F_p$

    E-Print Network [OSTI]

    Patrizio Neff; Ionel-Dumitrel Ghiba

    2015-10-29

    We discuss in detail existing isotropic elasto-plastic models based on 6-dimensional flow rules for the positive definite plastic metric tensor $C_p=F_p^T\\, F_p$ and highlight their properties and interconnections. We show that seemingly different models are equivalent in the isotropic case.

  4. Catalytic pyrolysis of plastic wastes - Towards an economically viable process

    SciTech Connect (OSTI)

    McIntosh, M.J.; Arzoumanidis, G.G.; Brockmeier, F.E.

    1996-07-01

    The ultimate goal of our project is an economically viable pyrolysis process to recover useful fuels and/or chemicals from plastics- containing wastes. This paper reports the effects of various promoted and unpromoted binary oxide catalysts on yields and compositions of liquid organic products, as measured in a small laboratory pyrolysis reactor. On the basis of these results, a commercial scale catalytic pyrolysis reactor was simulated by the Aspen software and rough costs were estimated. The results suggest that such a process has potential economic viability.

  5. Determination of the universality class of crystal plasticity

    E-Print Network [OSTI]

    Georgios Tsekenis; Jonathan T. Uhl; Nigel Goldenfeld; Karin A. Dahmen

    2013-08-27

    Although scaling phenomena have long been documented in crystalline plasticity, the universality class has been difficult to identify due to the rarity of avalanche events, which require large system sizes and long times in order to accurately measure scaling exponents and functions. Here we present comprehensive simulations of two-dimensional dislocation dynamics under shear, using finite-size scaling to extract scaling exponents and the avalanche profile scaling function from time-resolved measurements of slip-avalanches. Our results provide compelling evidence that both the static and dynamic universality classes are consistent with the mean-field interface depinning model.

  6. On Slip Transmission Criteria in Experiments and Crystal Plasticity Models

    E-Print Network [OSTI]

    Bayerschen, E; Reddy, B D; Böhlke, T

    2015-01-01

    A comprehensive overview is given on the slip transmission criteria for grain boundaries in the experimental literature, with a focus on slip system and grain boundary orientation. The use of these geometric criteria in continuum crystal plasticity models is briefly discussed. Perspectives on additional experimentally motivated criteria used in computational simulations are given. The theoretical framework of Gurtin (2008, J. Mech. Phys. Solids 56, p. 640) is reviewed for the single slip case with the aim of showing explicitly the connections to the experimentally developed criteria for slip transmission that are not discussed in the work itself.

  7. A Novel Thermal Position Sensor Integrated On A Plastic Substrate

    E-Print Network [OSTI]

    A. Petropoulos; G. Kaltsas; D. Goustouridis; A. G. Nassiopoulou

    2008-01-07

    A thermal position sensor was fabricated and evaluated. The device consists of an array of temperature sensing elements, fabricated entirely on a plastic substrate. A novel fabrication technology was implemented which allows direct integration with read out electronics and communication to the macro-world without the use of wire bonding. The fabricated sensing elements are temperature sensitive Pt resistors with an average TCR of 0.0024/C. The device realizes the detection of the position and the motion of a heating source by monitoring the resistance variation of the thermistor array. The application field of such a cost-effective position sensor is considered quite extensive.

  8. Visualization of stacking faults in fcc crystals in plastic deformations

    E-Print Network [OSTI]

    Takeshi Kawasaki; Akira Onuki

    2011-11-27

    Using molecular dynamics simulation, we investigate the dynamics of stacking faults in fcc crystals in uniaxial stretching in a Lennard-Jones binary mixture composed of 4096 particles in three dimensions. We visualize stacking faults using a disorder variable $D_j(t)$ for each particle $j$ constructed from local bond order parameters based on spherical harmonics (Steinhardt order parameters). Also introducing a method of bond breakage, we examine how stacking faults are formed and removed by collective particle motions. These processes are relevant in plasticity of fcc crystals.

  9. Shear Strength Prediction By Modified Plasticity Theory For SFRC Beams

    SciTech Connect (OSTI)

    Colajanni, Piero; Recupero, Antonino; Spinella, Nino [Dipartimento di Ingegneria Civile, Universita di Messina, C.da di Dio 1-98166, Vill. S. Agata, Messina (Italy)

    2008-07-08

    the plastic Crack Sliding Model (CSM) is extended for derivation of a physical model for the prediction of ultimate shear strength of SFRC beams, by assuming that the critical cracks is modeled by a yield lines. To this aim, the CSM is improved in order to take into account the strength increases due to the arch effect for deep beam. Then, the effectiveness factors for the concrete under biaxial stress are calibrated for fibrous concrete. The proposed model, able to provide the shear strength and the position of the critical cracks, is validate by a large set of test results collected in literature.

  10. Plastics and Rubber Products (2010 MECS) | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeeding access| DepartmentPeerFederal FleetUpSmallHydrocarbonPlastics and Rubber

  11. Supporting Information Scalable Air Cathode Microbial Fuel Cells Using Glass Fiber Separators, Plastic Mesh

    E-Print Network [OSTI]

    , Plastic Mesh Supporters, and Graphite Fiber Brush Anodes Xiaoyuan Zhang a , Shaoan Cheng b, c , Peng Liang (mW/m2 ) Reference Single brush Single Without plastic mesh or GF1 12 9.5±0.2 68±1 1160±21 This study Single brush Single Without plastic mesh, with GF1 12 11.8±2.1 74±4 1277±80 This study Single brush

  12. Opportunities and Barriers in the Implementation of Energy Efficiency Measures in Plastic Manufacturing 

    E-Print Network [OSTI]

    Kanunho, A; Yong, J. C.

    2012-01-01

    of us consumes in excess of 100 kgs [2] of plastics every year. Plastic processing sector is characterized by many different processes such as injection molding, blow molding, rota-molding, extrusion, thermoforming and vacuum forming. Resin... for energy savings. The section below details various popular energy savings opportunities that can be introduced in a typical plastic manufacturing facility. 1. Retrofit variable speed drives (VSD) on hydraulic injection molding machines (IMMs...

  13. Arrangement for connecting a fiber-reinforced plastic pipe to a stainless steel flange

    DOE Patents [OSTI]

    Allais, Arnaud (D-30625 Hannover, DE); Hoffmann, Ernst (D-30855 Langenhagen, DE)

    2008-02-05

    Arrangement for connecting a fiber-reinforced plastic pipe (18) to a stainless steel flange (12, 16), in which the end of the fiber-reinforced plastic pipe (18) is accommodated in a ring-shaped groove (12a, 16a) in the flange (12, 16), the groove conforming to the dimensions of the fiber-reinforced plastic pipe (18), where the gap remaining between the end of the fiber-reinforced plastic pipe (18) and the ring-shaped groove (12a, 16a) is filled with a sealant (19).

  14. Thick adherent dielectric films on plastic substrates and method for depositing same

    DOE Patents [OSTI]

    Wickboldt, Paul (Walnut Creek, CA); Ellingboe, Albert R. (Fremont, CA); Theiss, Steven D. (Woodbury, MN); Smith, Patrick M. (San Ramon, CA)

    2002-01-01

    Thick adherent dielectric films deposited on plastic substrates for use as a thermal barrier layer to protect the plastic substrates from high temperatures which, for example, occur during laser annealing of layers subsequently deposited on the dielectric films. It is desirable that the barrier layer has properties including: a thickness of 1 .mu.m or greater, adheres to a plastic substrate, does not lift-off when cycled in temperature, has few or no cracks and does not crack when subjected to bending, resistant to lift-off when submersed in fluids, electrically insulating and preferably transparent. The thick barrier layer may be composed, for example, of a variety of dielectrics and certain metal oxides, and may be deposited on a variety of plastic substrates by various known deposition techniques. The key to the method of forming the thick barrier layer on the plastic substrate is maintaining the substrate cool during deposition of the barrier layer. Cooling of the substrate maybe accomplished by the use of a cooling chuck on which the plastic substrate is positioned, and by directing cooling gas, such as He, Ar and N.sub.2, between the plastic substrate and the cooling chucks. Thick adherent dielectric films up to about 5 .mu.m have been deposited on plastic substrates which include the above-referenced properties, and which enable the plastic substrates to withstand laser processing temperatures applied to materials deposited on the dielectric films.

  15. Development/Plasticity/Repair Identification of Modulators of Hair Cell Regeneration in the

    E-Print Network [OSTI]

    Rubel, Edwin

    Development/Plasticity/Repair Identification of Modulators of Hair Cell Regeneration levels, environmental toxins, and some medications can readily induce damage or loss of hair cells, often

  16. Development/Plasticity/Repair Glycine Transporter-1 Inhibition Promotes Striatal Axon

    E-Print Network [OSTI]

    Sulzer, David

    Development/Plasticity/Repair Glycine Transporter-1 Inhibition Promotes Striatal Axon Sprouting via injections of the toxin 6-hydroxydopamine. We used apharmacologicalapproachtoenhance

  17. Mesoscale Theory of Grains and Cells: Crystal Plasticity and Coarsening Surachate Limkumnerd* and James P. Sethna

    E-Print Network [OSTI]

    Sethna, James P.

    Mesoscale Theory of Grains and Cells: Crystal Plasticity and Coarsening Surachate Limkumnerd a mesoscale theory of dislocation motion. It provides a quantitative description of deformation and rotation

  18. Experimental Investigation of Plastic Deformations Before Granular Avalanche

    E-Print Network [OSTI]

    Axelle Amon; Roman Bertoni; Jérôme Crassous

    2012-11-23

    We present an experimental study of the deformation inside a granular material that is progressively tilted. We investigate the deformation before the avalanche with a spatially resolved Diffusive Wave Spectroscopy setup. At the beginning of the inclination process, we first observe localized and isolated events in the bulk, with a density which decreases with the depth. As the angle of inclination increases, series of micro-failures occur periodically in the bulk, and finally a granular avalanche takes place. The micro-failures are observed only when the tilt angles are larger than a threshold angle much smaller than the granular avalanche angle. We have characterized the density of reorganizations and the localization of micro-failures. We have also explored the effect of the nature of the grains, the relative humidity conditions and the packing fraction of the sample. We discuss those observations in the framework of the plasticity of granular matter. Micro-failures may then be viewed as the result of the accumulation of numerous plastic events.

  19. Avalanches, Plasticity, and Ordering in Colloidal Crystals Under Compression

    E-Print Network [OSTI]

    D. McDermott; C. J. Olson Reichhardt; C. Reichhardt

    2015-03-09

    Using numerical simulations we examine colloids with a long-range Coulomb interaction confined in a two-dimensional trough potential undergoing dynamical compression. As the depth of the confining well is increased, the colloids move via elastic distortions interspersed with intermittent bursts or avalanches of plastic motion. In these avalanches, the colloids rearrange to minimize their colloid-colloid repulsive interaction energy by adopting an average lattice constant that is isotropic despite the anisotropic nature of the compression. The avalanches take the form of shear banding events that decrease or increase the structural order of the system. At larger compressions, the avalanches are associated with a reduction of the number of rows of colloids that fit within the confining potential, and between avalanches the colloids can exhibit partially crystalline or even smectic ordering. The colloid velocity distributions during the avalanches have a non-Gaussian form with power law tails and exponents that are consistent with those found for the velocity distributions of gliding dislocations. We observe similar behavior when we subsequently decompress the system, and find a partially hysteretic response reflecting the irreversibility of the plastic events.

  20. Multiaxial plasticity and fatigue life prediction in coiled tubing

    SciTech Connect (OSTI)

    Tipton, S.M.

    1996-12-31

    Coiled tubing is being used increasingly in the oil well drilling and servicing industry. Continuous steel tubing of structural dimensions (up to 89 mm or 3.5 in. in diameter) is wound onto a large-diameter reel for repeated deployment into and out of a well bore. The bending strain range associated with each wrap-unwrap cycle can exceed 3% with lives well below 100 cycles. During constant internal pressure fatigue testing, tubing has been observed to grow in diameter by as much as 30%. This paper describes an analytical model to predict the fatigue behavior of coiled tubing subjected to variable pressure service conditions. The approach utilizes standard low-cycle fatigue data but requires additional experimental results from constant pressure fatigue testing. The algorithm is based on estimates of biaxial ratcheting from an incremental plasticity model using a hybrid associated flow rule, a modified kinematic hardening rule with multiple von Mises yield surfaces, and a specialized limit surface concept. An empirical damage parameter was formulated based on constant pressure fatigue data using mean and fluctuating von Mises equivalent strain components occurring throughout the life of a section of tubing. This parameters is used with the Palmgren-Miner definition of cumulative damage to track damage that is accumulating nonlinearly under constant or variable pressure histories. Modifications to standard incremental plasticity components and implementation assumptions used to apply the model are presented and discussed. The predictive capability of the model is demonstrated relative to data generated under constant and variable pressure histories.

  1. Unified Creep Plasticity Damage (UCPD) Model for Rigid Polyurethane Foams.

    SciTech Connect (OSTI)

    Neilsen, Michael K.; Lu, Wei-Yang; Scherzinger, William M.; Hinnerichs, Terry D.; Lo, Chi S.

    2015-06-01

    Numerous experiments were performed to characterize the mechanical response of several different rigid polyurethane foams (FR3712, PMDI10, PMDI20, and TufFoam35) to large deformation. In these experiments, the effects of load path, loading rate, and temperature were investigated. Results from these experiments indicated that rigid polyurethane foams exhibit significant volumetric and deviatoric plasticity when they are compressed. Rigid polyurethane foams were also found to be very strain-rate and temperature dependent. These foams are also rather brittle and crack when loaded to small strains in tension or to larger strains in compression. Thus, a new Unified Creep Plasticity Damage (UCPD) model was developed and implemented into SIERRA with the name Foam Damage to describe the mechanical response of these foams to large deformation at a variety of temperatures and strain rates. This report includes a description of recent experiments and experimental findings. Next, development of a UCPD model for rigid, polyurethane foams is described. Selection of material parameters for a variety of rigid polyurethane foams is then discussed and finite element simulations with the new UCPD model are compared with experimental results to show behavior that can be captured with this model.

  2. Some three-dimensional problems related to dielectric breakdown and polycrystal plasticity

    E-Print Network [OSTI]

    Some three-dimensional problems related to dielectric breakdown and polycrystal plasticity Adriana estimate which scales differently when the yield set of the basic crystal is highly eccentric. For 3D. In both settings the Sachs bound is optimal. 1 Introduction The analysis of rigid, perfectly-plastic

  3. Spin on dopants for high-performance single-crystal silicon transistors on flexible plastic substrates

    E-Print Network [OSTI]

    Rogers, John A.

    Spin on dopants for high-performance single-crystal silicon transistors on flexible plastic February 2005; published online 23 March 2005 Free-standing micro/nanoelements of single-crystal silicon-temperature device substrates, such as plastic, for high-performance mechanically flexible thin-film transistors TFTs

  4. Orientation dependence of plastic deformation in nickel-based single crystal superalloys: Discretecontinuous model simulations

    E-Print Network [OSTI]

    Devincre, Benoit

    Orientation dependence of plastic deformation in nickel-based single crystal superalloys: Discrete of single-crystal nickel-based superalloys is simulated. At 1123 K, two uniaxial tensile loading cases though no cubic slip systems are activated. In the [001] case, the plastic flow is distributed more

  5. JOURNAL OF MATERIALS SCIENCE 35 (2000) 4635 4647 Crystal plasticity analysis of stressassisted

    E-Print Network [OSTI]

    Grujicic, Mica

    2000-01-01

    JOURNAL OF MATERIALS SCIENCE 35 (2000) 4635­ 4647 Crystal plasticity analysis of stress@ces.clemson.edu A new model based on crystal­plasticity, crystallography, thermodynamics, kinetics and statistics Martensitictransformationisgenerallycharacterizedas a diffusionless, displacive change in materials crystal structure in which both the morphology

  6. SPEECH SOUND CODING AND TRAINING-INDUCED PLASTICITY IN PRIMARY AUDITORY CORTEX

    E-Print Network [OSTI]

    Kilgard, Michael P.

    SPEECH SOUND CODING AND TRAINING-INDUCED PLASTICITY IN PRIMARY AUDITORY CORTEX by Crystal Tasha Crystal Tasha Engineer All Rights Reserved #12;SPEECH SOUND CODING AND TRAINING-INDUCED PLASTICITY IN PRIMARY AUDITORY CORTEX by CRYSTAL TASHA ENGINEER, B.S., M.S. DISSERTATION Presented to the Faculty

  7. Crystal Plasticity Modeling of Deformation and Creep in Polycrystalline Ti-6242

    E-Print Network [OSTI]

    Ghosh, Somnath

    Crystal Plasticity Modeling of Deformation and Creep in Polycrystalline Ti-6242 DHYANJYOTI DEKA computational model based on crystal plasticity for the analysis of two-phase a/b Ti-6242 polycrystalline alloys. A rate-dependent elastic-crystal plas- ticity model is incorporated in this model to accommodate

  8. An interpretation of size-scale plasticity in geometrically confined systems

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    An interpretation of size-scale plasticity in geometrically confined systems H. D. Espinosa* , S been identified in both polycrystalline submicron thin films and single crystal micro pillars. The size characteristic dimension. The simulations reveal that two key concepts are at the root of the observed plasticity

  9. Physical analyses of crystal plasticity by DD simulations B. Devincre a,*, L. Kubin a

    E-Print Network [OSTI]

    Devincre, Benoit

    Physical analyses of crystal plasticity by DD simulations B. Devincre a,*, L. Kubin a , T. Hoc b the potentialities of dislocation dynamics simulations for performing analyses of crystal plasticity and obtaining that are critical for mod- eling strain hardening in face-centred cubic crystals, the mesoscopic coefficients

  10. SPEECH-CODING AND TRAINING-INDUCED PLASTICITY IN AUDITORY CORTEX OF NORMAL AND DYSLEXIA

    E-Print Network [OSTI]

    Kilgard, Michael P.

    SPEECH-CODING AND TRAINING-INDUCED PLASTICITY IN AUDITORY CORTEX OF NORMAL AND DYSLEXIA MODEL RATS anymore... #12;SPEECH-CODING AND TRAINING-INDUCED PLASTICITY IN AUDITORY CORTEX OF NORMAL AND DYSLEXIA been lucky to share the lab with many wonderful colleagues. First, I must thank Dr. Crystal Engineer

  11. Analogy between glass rheology and crystal plasticity: yielding at high strain rate

    E-Print Network [OSTI]

    Yildiz, Bilge

    Analogy between glass rheology and crystal plasticity: yielding at high strain rate Yue Fan arising from avalanche dynamics.10 View from crystal plasticity The experimental evidence of up fluctuation to stress activated processes. For crystals this behavior has been recently explained using

  12. PLASTICITY IN THE AUDITORY CORTEX AND CHANGES IN PERCEPTUAL DISCRIMINATION AFTER NUCLEUS BASALIS STIMULATION IN RATS

    E-Print Network [OSTI]

    Kilgard, Michael P.

    PLASTICITY IN THE AUDITORY CORTEX AND CHANGES IN PERCEPTUAL DISCRIMINATION AFTER NUCLEUS BASALIS 2008 Amanda Christine Reed All Rights Reserved #12;PLASTICITY IN THE AUDITORY CORTEX AND CHANGES to thank Crystal Engineer for being such a wonderful friend and behavior training partner throughout

  13. Plastic deformations in crystal, polycrystal, and glass in binary mixtures under shear: Collective yielding

    E-Print Network [OSTI]

    Plastic deformations in crystal, polycrystal, and glass in binary mixtures under shear: Collective plastic deformations are induced by structural changes with increasing applied stress 1,2 . In crystal; published 3 May 2010 Using molecular dynamics simulation, we examine the dynamics of crystal, polycrystal

  14. Evolution of swelling pressure of cohesive-frictional, rough and elasto-plastic granulates

    E-Print Network [OSTI]

    Luding, Stefan

    with cohesive-frictional, rough and elasto-plastic "mi- croscopic" contact properties. The spherical particlesEvolution of swelling pressure of cohesive- frictional, rough and elasto-plastic granulates Stefan as function of pressure for different micro- scopic contact properties. Keywords: granular materials, discrete

  15. An Elasto-visco-plastic Model of Cell Aggregates L. Preziosi

    E-Print Network [OSTI]

    Preziosi, Luigi

    elasto­visco­plastic model which is able to describe the mechanical properties of a concentrated cellAn Elasto-visco-plastic Model of Cell Aggregates L. Preziosi Department of Mathematics]. On the other hand, it is known that the intrinsic properties of the base components - cells and collagen

  16. A MULTI-LAYER PLASTIC PACKAGING TECHNOLOGY FOR MINIATURIZED BIO ANALYSIS SYSTEMS CONTAINING INTEGRATED

    E-Print Network [OSTI]

    A MULTI-LAYER PLASTIC PACKAGING TECHNOLOGY FOR MINIATURIZED BIO ANALYSIS SYSTEMS CONTAINING, GA 30332, USA Abstract ­ A multi-layer plastic packaging technology has been developed and A. Bruno Frazier School of Electrical & Computer Engineering Georgia Institute of Technology Atlanta

  17. Triple-picket warm plastic-shell implosions on OMEGA P. B. Radha,1

    E-Print Network [OSTI]

    Triple-picket warm plastic-shell implosions on OMEGA P. B. Radha,1 C. Stoeckl,1 V. N. Goncharov,1 J-gas-filled plastic shells are imploded by direct irradiation from the OMEGA laser T. R. Boehly et al., Opt. Commun

  18. Effect of coal filler on the properties of soy protein plastics

    SciTech Connect (OSTI)

    Wang, G.H.; Zhou, A.N.; Hu, M.B. [Xian University of Science & Technology, Xian (China)

    2006-11-15

    The influence of ultrafine coal filler (UFC) content on tensile properties, water absorption, and biodegradability of soy protein plastics were investigated. The addition of UFC in the soy protein plastics, with different content of glycerol as a plasticizer, was at different ratio varying from 10:0 to 6:4. Blend sheets of the soy protein composites were prepared by the compression molding processing. The results show that, with 23.08 wt % glycerol, the tensile strength and elongation at break for the soy protein sheet with coal filler (range from 5 to 30 parts) can be enhanced as compared with nonfilled soy protein plastics. Water resistance of the soy protein plastics improves with the increase in UFC content. The derivative thermogravimetry (DTG) curves indicate a double-stage degradation process for defatted soy flour (SPF), while three-stage degradation process for soy plastics and the soy protein composites. FT-IR, XPS, and SEM were applied to study the interfacial interaction between coal macromolecules and soy protein molecules in UFC filled soy protein plastics. The results demonstrated that there is strong interfacial interaction in the soy protein plastics caused by the compression molding processing.

  19. Strain shielding and confined plasticity in thin polymer films: Impacts on thermomechanical data storage

    E-Print Network [OSTI]

    Strain shielding and confined plasticity in thin polymer films: Impacts on thermomechanical data shielding is present when the plastic deformation radius exceeds $65% of the film thickness. Thereafter. The shielding effects were alleviated with use of a modulus-matched buffer layer between the polymer film

  20. Drug-evoked synaptic plasticity and addictive behavior, a causal relationship?

    E-Print Network [OSTI]

    Fukai, Tomoki

    Drug-evoked synaptic plasticity and addictive behavior, a causal relationship? Christian Luescher principal interest is on drug reward and how exposure to addictive substances can change behavior in rodent models of addiction. "Drug-evoked synaptic plasticity" has emerged as a mechanism underlying drug

  1. DUCTILE-BRITTLE TRANSITIONS IN THE FRACTURE OF PLASTICALLY-DEFORMING, ADHESIVELY-BONDED STRUCTURES

    E-Print Network [OSTI]

    Thouless, Michael

    1 DUCTILE-BRITTLE TRANSITIONS IN THE FRACTURE OF PLASTICALLY-DEFORMING, ADHESIVELY. Historically, fracture mechanics using a single failure parameter of toughness has gained acceptance-bonded joints in steel sheets failing by mode-I fracture and plastic deformation were examined. Three types

  2. Two stochastic mean-field polycrystal plasticity methods

    SciTech Connect (OSTI)

    Tonks, Michael [Los Alamos National Laboratory

    2008-01-01

    In this work, we develop two mean-field polycrystal plasticity models in which the L{sup c} are approximated stochastically. Through comprehensive CPFEM analyses of an idealized tantalum polycrystal, we verify that the L{sup c} tend to follow a normal distribution and surmise that this is due to the crystal interactions. We draw on these results to develop the STM and the stochastic no-constraints model (SNCM), which differ in the manner in which the crystal strain rates D{sup c} are prescribed. Calibration and validation of the models are performed using data from tantalum compression experiments. Both models predict the compression textures more accurately than the FCM, and the SNCM predicts them more accurately than the STM. The STM is extremely computationally efficient, only slightly more expensive than the FCM, while the SNCM is three times more computationally expensive than the STM.

  3. Scanners for the quality contol of scintillating plastic fibres

    E-Print Network [OSTI]

    Rodigues, Ana Barbara; Garnier, Francois; Giudici, Pierre-Ange; Greim, Roman; Hebler, Philip; Joram, Christian; Kirn, Thomas; Pierschel, Gerhard; Schateikis, Tobias; Stevens, Holger; Bachlechner, Andreas; Deckenhoff, Mirco; Karpinski, Waclaw; Kruse, Florian; Schultz Von Dratzig, Arndt; Schwering, Georg; Swientek, Krzysztof Piotr; Wlochal, Michael

    2015-01-01

    The use of scintillating plastic fibres in the SciFi tracker requires rigorous quality control. The fibre diameter and in particular local variations in form of bumps and necks have an impact on the regularity of the winding pattern and hence the spatial resolution. Defects in the fibre cladding lead to light losses and inter-fibre cross talk. Machines have been developed which allow scanning at high throughput of the fibre diameter and the integrity of the cladding. We describe the design principles and implementations of these machines and illustrate their performance. While these machines allow to identify and quantify performance issues of the prototype fibres, they will also play a major role during the series production of the SciFi tracker. If needed, the capacity of the machines allows scanning of the full production volume.

  4. Acoustic emission from fiber reinforced plastic damaged hoop wrapped cylinders

    SciTech Connect (OSTI)

    Akhtar, A.; Kung, D.; Westbrook, D.R.

    2000-03-01

    Metal lined continuous fiber reinforced plastic (FRP) hoop wrapped cylinders with axial cuts to the FRP were modeled mathematically and tested experimentally. Steel lined and aluminum alloy lined glass FRP vessels were subjected to acoustic emission tests (AE) and hydraulic burst tests. The burst pressure decreased monotonically with the length of the axial cut. Acoustic emission increased initially with a decrease in burst pressure, and attained a maximum at an intermediate level of damage to the FRP. However, acoustic emission decreased when the level of damage was higher and the burst pressure was lower. Implications of the findings are discussed in the context of the search for an acoustic emission test method to inspect periodically the vessels used for the storage of compressed gaseous fuels on natural gas vehicles (NGV) and hydrogen vehicles.

  5. Indentation size effect and the plastic compressibility of glass

    SciTech Connect (OSTI)

    Smedskjaer, Morten M., E-mail: mos@bio.aau.dk [Section of Chemistry, Aalborg University, 9000 Aalborg (Denmark)

    2014-06-23

    Oxide glasses exhibit significant densification under an applied isostatic pressure at the glass transition temperature. The glass compressibility is correlated with the chemical composition and atomic packing density, e.g., borate glasses with planar triangular BO{sub 3} units are more disposed for densification than silicate glasses with tetrahedral units. We here show that there is a direct relation between the plastic compressibility following hot isostatic compression and the extent of the indentation size effect (ISE), which is the decrease of hardness with indentation load exhibited by most materials. This could suggest that the ISE is correlated with indentation-induced shear bands, which should form in greater density when the glass network is more adaptable to volume changes through structural and topological rearrangements under an applied pressure.

  6. Conductivity enhancement in plastic-crystalline solid-state electrolytes

    E-Print Network [OSTI]

    K. Geirhos; P. Lunkenheimer; M. Michl; D. Reuter; A. Loidl

    2015-06-19

    Finding new ionic conductors that enable significant advancements in the development of energy-storage devices is a challenging goal of current material science. Aside of material classes as ionic liquids or amorphous ion conductors, the so-called plastic crystals (PCs) have been shown to be good candidates combining high conductivity and favourable mechanical properties. PCs are formed by molecules whose orientational degrees of freedom still fluctuate despite the material exhibits a well-defined crystalline lattice. Here we show that the conductivity of Li+ ions in succinonitrile, the most prominent molecular PC electrolyte, can be enhanced by several decades when replacing part of the molecules in the crystalline lattice by larger ones. Dielectric spectroscopy reveals that this is accompanied by a stronger coupling of ionic and reorientational motions. These findings, which can be understood in terms of an optimised "revolving door" mechanism, open a new path towards the development of better solid-state electrolytes.

  7. Plasticity of a colloidal polycrystal under cyclic shear

    E-Print Network [OSTI]

    Elisa Tamborini; Luca Cipelletti; Laurence Ramos

    2014-08-27

    We use confocal microscopy and time-resolved light scattering to investigate plasticity in a col- loidal polycrystal, following the evolution of the network of grain boundaries as the sample is submitted to thousands of shear deformation cycles. The grain boundary motion is found to be ballistic, with a velocity distribution function exhibiting non-trivial power law tails. The shear- induced dynamics initially slow down, similarly to the aging of the spontaneous dynamics in glassy materials, but eventually reach a steady state. Surprisingly, the cross-over time between the ini- tial aging regime and the steady state decreases with increasing probed length scale, hinting at a hierarchical organization of the grain boundary dynamics.

  8. Electrical separation of plastics coming from special waste

    SciTech Connect (OSTI)

    Gente, Vincenzo; La Marca, Floriana; Lucci, Federica; Massacci, Paolo

    2003-07-01

    Minimisation of waste to landfilling is recognised as a priority in waste management by European rules. In order to achieve this goal, developing suitable technologies for waste recycling is therefore of great importance. To achieve this aim the technologies utilised for mineral processing can be taken into consideration to develop recycling systems. In particular comminution and separation processes can be adopted to recover valuable materials from composite waste. In this work the possibility of recycling pharmaceutical blister packaging has been investigated. A suitable comminution process has been applied in order to obtain the liberation of the plastic and aluminium components. Experiments of electrical separation have been carried out in order to point out the influence of the process parameters on the selections of the different materials and to set up the optimum operating conditions.

  9. A system analysis of converting non-recyclable plastic waste into value-added products in a paper industry cluster

    E-Print Network [OSTI]

    Desam, Padmabhushana R

    2013-01-01

    Waste plastic, both industrial and municipal sources, is posing a major environmental challenges in developing countries such as India due to improper disposal methods. Large quantities of non-recyclable plastic waste get ...

  10. Coal plasticity at high heating rates and temperatures. Final technical progress report

    SciTech Connect (OSTI)

    Gerjarusak, S.; Peters, W.A.; Howard, J.B.

    1995-05-01

    Plastic coals are important feedstocks in coke manufacture, coal liquefaction, gasification, and combustion. During these processes, the thermoplastic behavior of these coals is also important since it may contribute to desirable or undesirable characteristics. For example, during liquefaction, the plastic behavior is desired since it leads to liquid-liquid reactions which are faster than solid-liquid reactions. During gasification, the elastic behavior is undesired since it leads to caking and agglomeration of coal particles which result in bed bogging in fixed or fluidized bed gasifiers. The plastic behavior of different coals was studied using a fast-response plastometer. A modified plastometer was used to measure the torque required to turn at constant angular speed a cone-shaped disk embedded in a thin layer of coal. The coal particles were packed between two metal plates which are heated electrically. Heating rates, final temperatures, pressures, and durations of experiment ranged from 200--800 K/s, 700--1300 K, vacuum-50 atm helium, and 0--40 s, respectively. The apparent viscosity of the molten coal was calculated from the measured torque using the governing equation of the cone-and-plate viscometer. Using a concentrated suspension model, the molten coal`s apparent viscosity was related to the quantity of the liquid metaplast present during pyrolysis. Seven coals from Argonne National Laboratory Premium Coal Sample Bank were studied. Five bituminous coals, from high-volatile to low-volatile bituminous, were found to have very good plastic behavior. Coal type strongly affects the magnitude and duration of plasticity. Hvb coals were most plastic. Mvb and lvb coals, though the maximum plasticity and plastic period were less. Low rank coals such as subbituminous and lignite did not exhibit any plasticity in the present studies. Coal plasticity is moderately well correlated with simple indices of coal type such as the elemental C,O, and H contents.

  11. The need to design and construct roadways on highly plastic clays is common in central and eastern Texas, where expansive clays are prevalent. Roadways constructed on highly plastic clay subgrades may be damaged

    E-Print Network [OSTI]

    Zornberg, Jorge G.

    The need to design and construct roadways on highly plastic clays is common in central and eastern Texas, where expansive clays are prevalent. Roadways constructed on highly plastic clay subgrades may the infiltration of water into highly plastic clays under an increased gravity field in a centrifuge. Project

  12. Plastics Avoiding Bisphenol-A (BPA) Why is there concern? Researchers are concerned that even at low levels, environmental estrogens

    E-Print Network [OSTI]

    Chen, Tsuhan

    in the dishwasher. DO hand wash PC bottles in mild detergent. · DO NOT use PC plastic bottles that are worn

  13. Press Association 19 minutes ago Weaving threads of atoms into star-shapes could produce lighter, stronger plastics, according to scientists.

    E-Print Network [OSTI]

    Leigh, David A.

    produce lighter, stronger plastics, according to scientists. Researchers at the University of Edinburgh's plastics and polymers, could allow them to exercise greater control when designing materials. Using

  14. JOURNAL OF MATERIALS SCIENCE 37 (2002) 753 764 Crystal plasticity analysis of earing in deep-drawn

    E-Print Network [OSTI]

    Grujicic, Mica

    2002-01-01

    JOURNAL OF MATERIALS SCIENCE 37 (2002) 753­ 764 Crystal plasticity analysis of earing in deep to derive a crystal-plasticity materials constitutive model for deformation of OFHC copper single crystals that the crystallographic texture in as-rolled sheets, which can be accounted for through the use of crystal-plasticity

  15. Materials Science and Engineering A265 (1999) 285300 Crystal plasticity analysis of the effect of dispersed i-phase on

    E-Print Network [OSTI]

    Grujicic, Mica

    1999-01-01

    Materials Science and Engineering A265 (1999) 285­300 Crystal plasticity analysis of the effect element analysis based on the crystal plasticity theory was carried out to investigate the deformation Science S.A. All rights reserved. Keywords: Crystal plasticity theory; Deformation; Fracture; Lamellar k

  16. Deformation by dissolution and plastic flow of a single crystal sodium chloride indenter: An experimental study under the confocal

    E-Print Network [OSTI]

    Einat, Aharonov

    Deformation by dissolution and plastic flow of a single crystal sodium chloride indenter. H. Scholz (2008), Deformation by dissolution and plastic flow of a single crystal sodium chloride is undercutting dissolution that reduces the area of the contact, and the second is probably plastic flow

  17. DOI: 10.1002/adfm.200700162 Direct Observation of Super-Plasticity of Beta-SiC Nanowires

    E-Print Network [OSTI]

    Wang, Zhong L.

    ] bending technique have shown low-temperature large strain plasticity of single- crystal SiC NW. HoweverDOI: 10.1002/adfm.200700162 Direct Observation of Super-Plasticity of Beta-SiC Nanowires at Low Hao, Xiangyun Guo, and Zhonglin Wang 1. Introduction Super-plasticity is the ability of a material

  18. Dislocation-dynamics based crystal plasticity law for the low-and high-temperature deformation regimes of bcc crystal

    E-Print Network [OSTI]

    Devincre, Benoit

    Dislocation-dynamics based crystal plasticity law for the low- and high-temperature deformation; bcc; Crystal plasticity; Thermal activation 1. Introduction Crystal plasticity modeling at the level regimes of bcc crystal Ghiath Monnet a, , Ludovic Vincent b , Benoit Devincre c a EDF ­ R&D, MMC, avenue

  19. Influence of in-grain mesh resolution on the prediction of deformation textures in fcc polycrystals by crystal plasticity FEM

    E-Print Network [OSTI]

    by crystal plasticity FEM Z. Zhao a , S. Kuchnicki b , R. Radovitzky a,*, A. Cuitin~o b a Department Abstract The ability of three different crystal plasticity finite element models to predict deformation. Published by Elsevier Ltd. All rights reserved. Keywords: Texture; Crystal plasticity; Finite element models

  20. A size-dependent crystal plasticity finite-element model for creep and load shedding in polycrystalline titanium alloys

    E-Print Network [OSTI]

    Ghosh, Somnath

    A size-dependent crystal plasticity finite-element model for creep and load shedding Abstract A rate-dependent anisotropic elastic-crystal plasticity based finite-element (FE) model with size in the crystal plasticity relations are expressed as Hall­Petch type relations, where the grain size, lath size

  1. Long-Term Creep Of Commercially Produced Plastic Lumber Kenneth E. Van Ness, Ph.D., Washington and Lee University

    E-Print Network [OSTI]

    of the mechanical properties of plastic lumber. Any attempt to design for long-term performance, utilizing ASTM-term mechanical properties of plastic lumber in load-bearing applications. An earlier work outlined a theoryLong-Term Creep Of Commercially Produced Plastic Lumber Kenneth E. Van Ness, Ph.D., Washington

  2. Depth-sensing indentation tests in studying plastic instabilities N.Q. Chinh, J. Gubicza, Zs. Kovacs, and J. Lendvai

    E-Print Network [OSTI]

    Gubicza, Jenõ

    of the indenter and the elastic and plastic properties of the ma- terial. This relation has been recoveredDepth-sensing indentation tests in studying plastic instabilities N.Q. Chinh, J. Gubicza, Zs. Kova (Received 13 June 2003; accepted 29 September 2003) This review surveys the phenomenon of plastic

  3. CREEP BEHAVIOR OF COMMERCIALLY PRODUCED PLASTIC LUMBER Kenneth E. Van Ness, Ph.D., Washington and Lee University

    E-Print Network [OSTI]

    properties is discussed. Introduction The ability to extrude a mixed plastic feedstock into lumber of plastic lumber in load-bearing applications. An earlier work evaluated mechanical properties at a singleCREEP BEHAVIOR OF COMMERCIALLY PRODUCED PLASTIC LUMBER Kenneth E. Van Ness, Ph.D., Washington

  4. Adaptive Plasticity in Wild Field Cricket's Acoustic Susan M. Bertram*, Sarah J. Harrison, Ian R. Thomson, Lauren P. Fitzsimmons

    E-Print Network [OSTI]

    Bertram, Sue

    Adaptive Plasticity in Wild Field Cricket's Acoustic Signaling Susan M. Bertram*, Sarah J. Harrison, Canada Abstract Phenotypic plasticity can be adaptive when phenotypes are closely matched to changes of sexual selection, we asked whether crickets exhibit plasticity in signaling behavior that aligns

  5. Plastic behavior of fcc metals over a wide range of strain: Macroscopic and microscopic descriptions and their relationship

    E-Print Network [OSTI]

    Gubicza, Jenõ

    Plastic behavior of fcc metals over a wide range of strain: Macroscopic and microscopic The room temperature macroscopic and microscopic plastic behavior of four face-centered cubic metals (Al dislocations during plastic flow. It is shown that forest dislocations develop primarily due to interaction

  6. Plastic behavior of face-centered-cubic metals over a wide range Nguyen Q. Chinh a,*, Tamas Csanadi a

    E-Print Network [OSTI]

    Gubicza, Jenõ

    Plastic behavior of face-centered-cubic metals over a wide range of strain Nguyen Q. Chinh a Available online 16 June 2010 Abstract The plastic behavior of four pure face-centered-cubic (fcc) metals plastic deformation. It is shown that at high strains the saturation flow stress and the total dislocation

  7. Off-fault plasticity and earthquake rupture dynamics: 1. Dry materials or neglect of fluid pressure changes

    E-Print Network [OSTI]

    Off-fault plasticity and earthquake rupture dynamics: 1. Dry materials or neglect of fluid pressure an explicit dynamic finite element procedure. A Mohr-Coulomb type elastic-plastic description describes-fault plasticity during dynamic rupture. Those include the angle with the fault of the maximum compressive

  8. Creep and plasticity of glacier ice: a material science perspective Paul DUVAL, Maurine MONTAGNAT, Fanny GRENNERAT, Jerome WEISS,

    E-Print Network [OSTI]

    Weiss, Jérôme

    Creep and plasticity of glacier ice: a material science perspective Paul DUVAL, Maurine MONTAGNAT the plasticity of ice have been made during the past 60 years with the development of studies of the flow experimental investigations clearly show that the plastic deformation of the ice single crystal and polycrystal

  9. Plastic particles in coastal pelagic ecosystems of the Northeast Pacific ocean Miriam J. Doyle a,*, William Watson b

    E-Print Network [OSTI]

    Plastic particles in coastal pelagic ecosystems of the Northeast Pacific ocean Miriam J. Doyle a 2010 Accepted 11 October 2010 Keywords: Plastic particles Fragments Fibers Pellets Pelagic ecosystems the distribution, abundance and characteristics of plastic particles in plankton samples collected routinely

  10. Tracking the origins of plastic debris across the Coral Sea: A case study from the Ouva Island, New Caledonia

    E-Print Network [OSTI]

    Lherminier, Pascale

    Tracking the origins of plastic debris across the Coral Sea: A case study from the Ouvéa Island 27 February 2015 Revised 10 June 2015 Accepted 11 June 2015 Available online xxxx Keywords: Plastic pathways Transfer times a b s t r a c t Contamination of the marine environment by human-made plastic

  11. J. Non-Newtonian Fluid Mech. 142 (2007) 3662 On the numerical simulation of Bingham visco-plastic flow

    E-Print Network [OSTI]

    Guidoboni, Giovanna

    2007-01-01

    J. Non-Newtonian Fluid Mech. 142 (2007) 36­62 Review On the numerical simulation of Bingham visco-plastic various results and methods concerning the numerical simulation of Bingham visco-plastic flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 2. On the modeling of Bingham viscous plastic flow

  12. Study and validation of a variational theory of thermo-mechanical coupling in finite visco-plasticity

    E-Print Network [OSTI]

    Ortiz, Michael

    Study and validation of a variational theory of thermo-mechanical coupling in finite visco-plasticity online 24 November 2009 Keywords: Finite visco-plasticity Thermo-mechanical coupling Variational-mechanical coupling of Yang et al. (2006) in the case of finite thermo-visco-plasticity. The variational theory

  13. Numerical Linear Algebra with Applications, Vol. 1(1), 1--1 (191) Multigrid methods for PrandtlReu plasticity

    E-Print Network [OSTI]

    Wieners, Christian

    ­ReuÃ? plasticity Christian Wieners Institut fË?ur Computeranwendungen III, UniversitË?at Stuttgart, Pfaffenwaldring of a benchmark example for perfect plasticity and isotropic hardening. KEY WORDS Elastoplasticity, multigrid to Prandtl­ ReuÃ? plasticity. A flexible finite element library which supports adaptive multigrid methods

  14. S M Stoller Star Center-B100 Monthly/Effluent; Largo, FL

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon Spring,7=cr5rnPandAlba4227STARB1001/06

  15. S M Stoller Star Center-B100 Monthly/Effluent; Largo, FL

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the Weldon

  16. From depinning transition to plastic yielding of amorphous media: A soft modes perspective

    E-Print Network [OSTI]

    Botond Tyukodi; Sylvain Patinet; Stéphane Roux; Damien Vandembroucq

    2015-02-26

    A mesoscopic model of amorphous plasticity is discussed in the wider context of depinning models. After embedding in a d + 1 dimensional space, where the accumulated plastic strain lives along the additional dimension, the gradual plastic deformation of amorphous media can be regarded as the motion of an elastic manifold in a disordered landscape. While the associated depinning transition leads to scaling properties, the quadrupolar Eshelby interactions at play induce specific additional features like shear-banding and weak ergodicity breakdown. The latters are shown to be controlled by the existence of soft modes of the quadrupolar interaction, the consequence of which is discussed in the context of depinning.

  17. Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid

    DOE Patents [OSTI]

    Evans, R.J.; Chum, H.L.

    1995-11-07

    A process is described for pyrolyzing plastic waste feed streams containing polyvinyl chloride, polyethylene terephthalate, polystyrene and polyethylene to recover polystyrene, HCl and terephthalic acid comprising: heating the plastic waste feed stream to a first temperature; adding an acid or base catalyst on an oxide or carbonate support; heating the plastic waste feed stream to pyrolyze polyethylene terephthalate and polyvinyl chloride; separating terephthalic acid or HCl; heating to a second temperature to pyrolyze polystyrene; separating styrene; heating the waste feed stream to a third temperature to pyrolyze polyethylene; and separating hydrocarbons. 83 figs.

  18. Sequential pyrolysis of plastic to recover polystyrene HCL and terephthalic acid

    DOE Patents [OSTI]

    Evans, Robert J. (Lakewood, CO); Chum, Helena L. (Arvada, CO)

    1995-01-01

    A process of pyrolyzing plastic waste feed streams containing polyvinyl chloride, polyethylene terephthalate, polystyrene and polyethylene to recover polystyrene HCl and terephthalic acid comprising: heating the plastic waste feed stream to a first temperature; adding an acid or base catalyst on an oxide or carbonate support; heating the plastic waste feed stream to pyrolyze polyethylene terephthalate and polyvinyl chloride; separating terephthalic acid or HCl; heating to a second temperature to pyrolyze polystyrene; separating styrene; heating the waste feed stream to a third temperature to pyrolyze polyethylene; and separating hydrocarbons.

  19. Structural-chemical modeling of transition of coals to the plastic state

    SciTech Connect (OSTI)

    A.M. Gyul'maliev; S.G. Gagarin [FGUP Institute for Fossil Fuels, Moscow (Russian Federation)

    2007-02-15

    The structural-chemical simulation of the formation of plastic state during the thermal treatment (pyrolysis, coking) of coals is based on allowance for intermolecular interactions in the organic matter. The feasibility of transition of coals to the plastic state is determined by the ratio between the onset plastic state (softening) and runaway degradation temperatures, values that depend on the petrographic composition and the degree of metamorphism of coals and the distribution of structural and chemical characteristics of organic matter. 33 refs., 8 figs., 2 tabs.

  20. Mean-field description of plastic flow in amorphous solids

    E-Print Network [OSTI]

    Jie Lin; Matthieu Wyart

    2015-07-17

    Failure and flow of amorphous materials are central to various phenomena including earthquakes and landslides. There is accumulating evidence that the yielding transition between a flowing and an arrested phase is a critical phenomenon, but the associated exponents are not understood, even at a mean-field level where the validity of popular models is debated. Here we solve a mean-field model that captures the broad distribution of the mechanical noise generated by plasticity, whose behavior is related to biased L\\'evy flights near an absorbing boundary. We compute the exponent $\\theta$ characterizing the density of shear transformation $P(x)\\sim x^{\\theta}$, where $x$ is the stress increment beyond which they yield. We find that after an isotropic thermal quench, $\\theta=1/2$. However, $\\theta$ depends continuously on the applied shear stress, this dependence is not monotonic, and its value at the yield stress is not universal. The model rationalizes previously unexplained observations, and captures reasonably well the value of exponents in three dimensions. These results support that it is the true mean-field model that applies in large dimension, and raise fundamental questions on the nature of the yielding transition.

  1. Poly(lactic acid) degradable plastics, coatings, and binders

    SciTech Connect (OSTI)

    Bonsignore, P.V.; Coleman, R.D.; Mudde, J.P.

    1992-01-01

    Biochemical processes to derive value from the management of high carbohydrate food wastes, such as potato starch, corn starch, and cheese whey permeate, have typically been limited to the production of either ethanol or methane. Argonne National Laboratory (ANL) believes that lactic acid presents an attractive option for an alternate fermentation end product, especially in light of lactic acids' being a viable candidate for conversion to environmentally safe poly(lactic acid) (PLA) degradable plastics, coatings, and binders. Technology is being developed at ANL to permit a more cost effective route to modified high molecular weight PLA. Preliminary data on the degradation behavior of these modified PLAs shows the retention to the inherent hydrolytic degradability of the PLA modified, however, by introduced compositional variables. A limited study was done on the hydrolytic stability of soluble oligomers of poly(L-lactic acid). Over a 34 day hold period, water-methanol solutions of Pl-LA oligomers in the 2-10 DP range retained some 75% of their original molecular weight.

  2. Poly(lactic acid) degradable plastics, coatings, and binders

    SciTech Connect (OSTI)

    Bonsignore, P.V.; Coleman, R.D.; Mudde, J.P.

    1992-05-01

    Biochemical processes to derive value from the management of high carbohydrate food wastes, such as potato starch, corn starch, and cheese whey permeate, have typically been limited to the production of either ethanol or methane. Argonne National Laboratory (ANL) believes that lactic acid presents an attractive option for an alternate fermentation end product, especially in light of lactic acids` being a viable candidate for conversion to environmentally safe poly(lactic acid) (PLA) degradable plastics, coatings, and binders. Technology is being developed at ANL to permit a more cost effective route to modified high molecular weight PLA. Preliminary data on the degradation behavior of these modified PLAs shows the retention to the inherent hydrolytic degradability of the PLA modified, however, by introduced compositional variables. A limited study was done on the hydrolytic stability of soluble oligomers of poly(L-lactic acid). Over a 34 day hold period, water-methanol solutions of Pl-LA oligomers in the 2-10 DP range retained some 75% of their original molecular weight.

  3. Modeling the elastic and plastic response of single crystals and polycrystalline aggregates 

    E-Print Network [OSTI]

    Patwardhan, Parag Vilas

    2005-02-17

    Understanding the elastic-plastic response of polycrystalline materials is an extremely difficult task. A polycrystalline material consists of a large number of crystals having different orientations. On its own, each ...

  4. Low-cost solar collectors using thin-film plastics absorbers and glazings

    SciTech Connect (OSTI)

    Wilhelm, W.G.

    1980-01-01

    The design, fabrication, performance, cost, and marketing of flat plate solar collectors using plastic absorbers and glazings are described. Manufacturing cost breakdowns are given for single-glazed and double-glazed collectors. (WHK)

  5. "Plastic" Solar Cells: Self-Assembly of Bulk HeterojunctionNano...

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

    "Plastic" Solar Cells: Self-Assembly of Bulk Heterojunction Nano-Materials by Spontaneous Phase Separation October 20, 2009 at 3pm36-428 Alan Heeger Department of Chemistry,...

  6. 3.91J / 1.593J Mechanical Behavior of Plastics, Spring 2003

    E-Print Network [OSTI]

    Roylance, David

    Relation among chemical composition, physical structure, and mechanical behavior of plastics or synthetic high polymers. Study of types of polymers; fundamentals of viscoelastic phenomena such as creep, stress relaxation, ...

  7. Improving Energy Efficiency at U.S. Plastics Manufacturing Plants Summary Report and Case Studies

    SciTech Connect (OSTI)

    none,

    2010-06-25

    Industrial Technologies Program’s BestPractices report based on a comprehensive plant assessment project with ITP’s Industrial Assessment Center, The Society of the Plastics Industry, Inc., and several of its member companies.

  8. A non-linear elastic constitutive framework for replicating plastic deformation in solids.

    SciTech Connect (OSTI)

    Roberts, Scott Alan; Schunk, Peter Randall

    2014-02-01

    Ductile metals and other materials typically deform plastically under large applied loads; a behavior most often modeled using plastic deformation constitutive models. However, it is possible to capture some of the key behaviors of plastic deformation using only the framework for nonlinear elastic mechanics. In this paper, we develop a phenomenological, hysteretic, nonlinear elastic constitutive model that captures many of the features expected of a plastic deformation model. This model is based on calculating a secant modulus directly from a material's stress-strain curve. Scalar stress and strain values are obtained in three dimensions by using the von Mises invariants. Hysteresis is incorporated by tracking an additional history variable and assuming an elastic unloading response. This model is demonstrated in both single- and multi-element simulations under varying strain conditions.

  9. Grain refinement and texture development of cast bi90sb10 alloy via severe plastic deformation 

    E-Print Network [OSTI]

    Im, Jae-taek

    2009-05-15

    The purpose of this work was to study learn about grain refinement mechanisms and texture development in cast n-type Bi90Sb10 alloy caused by severe plastic deformation. The practical objective is to produce a fine grained ...

  10. A probe for in situ, remote, detection of defects in buried plastic natural gas pipelines

    SciTech Connect (OSTI)

    Mathur, M.P.; Spenik, J.L.; Condon, C.M.; Monazam, E.R.; Fincham, W.L.

    2007-12-18

    Several techniques are available to determine the integrity of in situ metal pipeline but very little is available in the literature to determine the integrity of plastic pipelines. Since the decade of the 1970s much of the newly installed gas distribution and transmission lines in the United States are fabricated from polyethylene or other plastic. A probe has been developed to determine the in situ integrity of plastic natural gas pipelines that can be installed on a traversing mechanism (pig) to detect abnormalities in the walls of the plastic natural gas pipeline from the interior. This probe has its own internal power source and can be deployed into existing natural gas supply lines. Utilizing the capacitance parameter, the probe inspects the pipe for flaws and records the data internally which can be retrieved later for analysis.

  11. Plastic Deformation of Semicrystalline Polyethylene under Extension, Compression, and Shear Using Molecular Dynamics Simulation

    E-Print Network [OSTI]

    Kim, Jun Mo

    Plastic deformation of the stack of alternating crystal and amorphous layers typical of semicrystalline polyethylene is studied by molecular dynamics simulation. A previous investigation of the semicrystalline layered stack ...

  12. Compendium of information on identification and testing of materials for plastic solar thermal collectors

    SciTech Connect (OSTI)

    McGinniss, V.D.; Sliemers, F.A.; Landstrom, D.K.; Talbert, S.G.

    1980-07-31

    This report is intended to organize and summarize prior and current literature concerning the weathering, aging, durability, degradation, and testing methodologies as applied to materials for plastic solar thermal collectors. Topics covered include (1) rate of aging of polymeric materials; (2) environmental factors affecting performance; (3) evaluation and prediction of service life; (4) measurement of physical and chemical properties; (5) discussion of evaluation techniques and specific instrumentation; (6) degradation reactions and mechanisms; (7) weathering of specific polymeric materials; and (8) exposure testing methodology. Major emphasis has been placed on defining the current state of the art in plastics degradation and on identifying information that can be utilized in applying appropriate and effective aging tests for use in projecting service life of plastic solar thermal collectors. This information will also be of value where polymeric components are utilized in the construction of conventional solar collectors or any application where plastic degradation and weathering are prime factors in material selection.

  13. Decoding Plant and Animal Genome Plasticity from Differential Paleo-Evolutionary Patterns and Processes

    E-Print Network [OSTI]

    Gent, Universiteit

    Decoding Plant and Animal Genome Plasticity from Differential Paleo-Evolutionary Patterns Continuing advances in genome sequencing technologies and computational methods for comparative genomics currently allow inferring the evolutionary history of entire plant and animal genomes. Based

  14. Long-term functional plasticity in plant hydraulic architecture in response to supplemental moisture

    E-Print Network [OSTI]

    Archer, Steven R.

    Long-term functional plasticity in plant hydraulic architecture in response to supplemental of nearby individuals growing where soil moisture had been supplemented for 14 years. Traditional parameters receiving supplemental moisture consistently showed significant responses in all considered traits related

  15. A coupled theory for diffusion of hydrogen and large elastic-plastic deformations of metals

    E-Print Network [OSTI]

    Di Leo, Claudio V

    2012-01-01

    A thermodynamically-consistent coupled-theory which accounts for diffusion of hydrogen, trapping of hydrogen, diffusion of heat, and large elastic-plastic deformations of metals is developed. Our theoretical framework ...

  16. On a class of strain gradient plasticity theories : formulation and numerical implementation

    E-Print Network [OSTI]

    Lele, Suvrat Pratapsinh

    2008-01-01

    This study develops strain-gradient theories for isotropic and crystal plasticity. The following four theories were developed and numerically implemented: * A one-dimensional theory to understand the basic nature of strain ...

  17. Requirement for AMPA receptor endocytosis and long-term depression in ocular dominance plasticity

    E-Print Network [OSTI]

    Smith, Gordon Brawn

    2010-01-01

    The classic example of experience-dependent cortical plasticity is the ocular dominance (OD) shift in visual cortex following monocular deprivation (MD). As in other mammals with binocular vision, MD in mice induces ...

  18. The influence of salinity on the mechanical behavior of high plasticity soils

    E-Print Network [OSTI]

    Fahy, Brian Patrick

    2014-01-01

    This thesis investigates the influence of salinity on the mechanical behavior of smectitic rich high plasticity soils resedimented with pore fluid salinities ranging from 0 to 256 g/L. An extensive laboratory testing program ...

  19. Stress-induced variation in evolution: from behavioural plasticity to genetic assimilation

    E-Print Network [OSTI]

    Badyaev, Alex

    Review Stress-induced variation in evolution: from behavioural plasticity to genetic assimilation significantly further our understanding of the importance that stress-induced variation plays in evolution. First, stressful environments modify (and often reduce) the integration of neuroendocrinological

  20. The Use of Hollow Plastic Balls as Energy Conservation Devices in Heated Open Tanks 

    E-Print Network [OSTI]

    Byrne, T. J.

    1983-01-01

    The problem of heat losses from open liquid filled tanks is as old as industry itself. This paper will present the advantages of using an insulating blanket of hollow plastic spheres as a mechanism to conserve this type ...

  1. Sliding contact at plastically graded surfaces and applications to surface design

    E-Print Network [OSTI]

    Prasad, Anamika, 1979-

    2007-01-01

    Tailored gradation in elastic-plastic properties is known to offer avenues for suppressing surface damage during normal indentation and sliding contact. These graded materials have potential applications in diverse areas ...

  2. The Genetics of Phenotypic Plasticity in Plant Defense: Trichome Production in Mimulus guttatus

    E-Print Network [OSTI]

    Holeski, Liza M.; Chase?Alone, Ronnette; Kelley, John K.

    2010-04-04

    Insect herbivory is a major driving force of plant evolution. Phenotypic plasticity and developmental variation provide a means for plants to cope with variable herbivory. We characterized the genetics of developmental variation and phenotypic...

  3. Microstructure Design of Low Alloy Transformation-Induced Plasticity Assisted Steels 

    E-Print Network [OSTI]

    Zhu, Ruixian

    2013-03-20

    The microstructure of low alloy Transformation Induced Plasticity (TRIP) assisted steels has been systematically varied through the combination of computational and experimental methodologies in order to enhance the mechanical performance...

  4. Plasticity in the Rapid Escape Reflex of the Annelid Worm, Lumbriculus variegatus 

    E-Print Network [OSTI]

    Lybrand, Zane

    2012-10-19

    that occur during neural morphallaxis, a rare form of neural plasticity, in the annelid worm, Lumbriculus variegatus. Neural morphallaxis involves the reorganization of the animal's nervous system during segmental regeneration following injury. Here, I have...

  5. A simple technique for gamma ray and cosmic ray spectroscopy using plastic scintillator

    E-Print Network [OSTI]

    Akhilesh P. Nandan; Sharmili Rudra; Himangshu Neog; S. Biswas; S. Mahapatra; B. Mohanty; P. K. Samal

    2015-04-10

    A new and simple technique has been developed using plastic scintillator detectors for gamma ray and cosmic ray spectroscopy without single channel analyzer (SCA) or multichannel analyzer (MCA). In these experiments only a leading edge discriminator (LED) and NIM scalers have been used. Energy calibration of gamma spectra in plastic scintillators has been done using Co$^{60}$ and Cs$^{137}$ sources. The details experimental technique, analysis procedure and experimental results has been presented in this article.

  6. Thin film transistors on plastic substrates with reflective coatings for radiation protection

    DOE Patents [OSTI]

    Wolfe, Jesse D.; Theiss, Steven D.; Carey, Paul G.; Smith, Patrick M.; Wickboldt, Paul

    2003-11-04

    Fabrication of silicon thin film transistors (TFT) on low-temperature plastic substrates using a reflective coating so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The TFT can be used in large area low cost electronics, such as flat panel displays and portable electronics such as video cameras, personal digital assistants, and cell phones.

  7. Application of WLS strips for position determination in Strip PET tomograph based on plastic scintillators

    E-Print Network [OSTI]

    Smyrski, J; Bednarski, T; Bia?as, P; Czerwi?ski, E; Kap?on, ?; Kochanowski, A; Korcyl, G; Kowal, J; Kowalski, P; Kozik, T; Krzemie?, W; Molenda, M; Nied?wiecki, Sz; Pa?ka, M; Pawlik, M; Raczy?ski, L; Rudy, Z; Salabura, P; Sharma, N G; Silarski, M; S?omski, A; Strzelecki, A; Wi?licki, W; Zieli?ski, M; Zo?, N

    2013-01-01

    A method of determination of a gamma quantum absorption point in a plastic scintillator block using a matrix of wavelength-shifting (WLS) strips is proposed. Application of this method for improvement of position resolution in newly proposed PET detectors based on plastic scintillators is presented. The method enables to reduce parallax errors in reconstruction of images which occurs in the presently used Positron Emission Tomography scanners.

  8. Application of WLS strips for position determination in Strip PET tomograph based on plastic scintillators

    E-Print Network [OSTI]

    J. Smyrski; P. Moskal; T. Bednarski; P. Bia?as; E. Czerwi?ski; ?. Kap?on; A. Kochanowski; G. Korcyl; J. Kowal; P. Kowalski; T. Kozik; W. Krzemie?; M. Molenda; Sz. Nied?wiecki; M. Pa?ka; M. Pawlik; L. Raczy?ski; Z. Rudy; P. Salabura; N. G. Sharma; M. Silarski; A. S?omski; A. Strzelecki; W. Wi?licki; M. Zieli?ski; N. Zo?

    2013-11-24

    A method of determination of a gamma quantum absorption point in a plastic scintillator block using a matrix of wavelength-shifting (WLS) strips is proposed. Application of this method for improvement of position resolution in newly proposed PET detectors based on plastic scintillators is presented. The method enables to reduce parallax errors in reconstruction of images which occurs in the presently used Positron Emission Tomography scanners.

  9. Changes in mobility of plastic crystal ethanol during its transformation into the monoclinic crystal state

    SciTech Connect (OSTI)

    Sanz, Alejandro Nogales, Aurora; Ezquerra, Tiberio A.; Puente-Orench, Inés; Instituto de Ciencia de Materiales de Aragón, ICMA-CSIC, Pedro Cerbuna 12, 50009 Zaragoza ; Jiménez-Ruiz, Mónica

    2014-02-07

    Transformation of deuterated ethanol from the plastic crystal phase into the monoclinic one is investigated by means of a singular setup combining simultaneously dielectric spectroscopy with neutron diffraction. We postulate that a dynamic transition from plastic crystal to supercooled liquid-like configuration through a deep reorganization of the hydrogen-bonding network must take place as a previous step of the crystallization process. Once these precursor regions are formed, subsequent crystalline nucleation and growth develop with time.

  10. Thin film transistors on plastic substrates with reflective coatings for radiation protection

    DOE Patents [OSTI]

    Wolfe, Jesse D. (Fairfield, CA); Theiss, Steven D. (Woodbury, MN); Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Wickbold, Paul (Walnut Creek, CA)

    2006-09-26

    Fabrication of silicon thin film transistors (TFT) on low-temperature plastic substrates using a reflective coating so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The TFT can be used in large area low cost electronics, such as flat panel displays and portable electronics such as video cameras, personal digital assistants, and cell phones.

  11. Engineering Fracture MecMnics, 1971,Vol. 3, pp. 435-451. Pergamon Press. Printed inGreat Britain PLASTIC INTENSITY FACTORS FOR

    E-Print Network [OSTI]

    Hutchinson, John W.

    PLASTIC INTENSITY FACTORS FOR CRACKED PLATESt PETER D. HILTON and JOHN W. HUTCHINSON Harvard University, Cambridge, Mass. 02138, U.S.A. Abstract-An elastic-plastic analysis is performed for two problems relevant. Amplitudes of the dominant singularity in the plastic region at the crack tip, the plastic stress and strain

  12. > Facilities and Services > Recycling on the St. George Campus > NEW! Non-hazardous Laboratory Glass and Plastics Recycling NEW! Non-hazardous Laboratory Glass and

    E-Print Network [OSTI]

    Prodiæ, Aleksandar

    Glass and Plastics Recycling Program NEW! ­ Non-hazardous Laboratory Glass and Plastics Recycling Program NEW! NON-HAZARDOUS glass and plastic items used in laboratories can now be recycled! Facilities;© Copyright 2008, University of Toronto. Home Site Map Contact GLASS may be placed in the TEAL toters.PLASTIC

  13. Field evaluation of recycled plastic lumber (RPL) pallets. Final project report

    SciTech Connect (OSTI)

    Krishnaswamy, P.; Miele, C.R.; Francini, R.B.; Yuracko, K.; Yerace, P.

    1997-10-01

    One significant component of the waste stream, discarded plastic products and packaging, continues to be a growing portion of the municipal solid waste (MSW). There has been considerable work done in characterizing the quantity and types of plastics in different waste streams, collection methods, separation, sorting as well as technologies for processing post-consumer mixed plastics. The focus in recent years has been the development of markets for recycled plastic products, which constitutes the second half of the material flow diagram cycle shown in Figure 1. One key product that holds significant promise for plastics recycling to be both technically feasible and economically viable is Recycled Plastic Lumber (RPL). The contents of this report forms the second phase of a two-phase pilot project on developing specifications and standards for a product fabricated from RPL. Such standards and specifications are needed to prepare procurement guidelines for state and federal agencies interested in purchasing products made from recycled materials. The first phase focused on establishing a procedure to evaluate RPL product,s such as pallets, in a laboratory setting while this phase focuses on field evaluation of RPL pallets in service. This effort is critical in the development of new markets for RPL products. A brief summary of the findings from Phase 1 of this effort is presented next.

  14. Plasticity mechanism for copper extrusion in through-silicon vias for three-dimensional interconnects

    SciTech Connect (OSTI)

    Jiang, Tengfei; Spinella, Laura; Im, Jay; Ho, Paul S. [Microelectronics Research Center and Texas Materials Institute, University of Texas, Austin, Texas 78712 (United States)] [Microelectronics Research Center and Texas Materials Institute, University of Texas, Austin, Texas 78712 (United States); Wu, Chenglin; Huang, Rui [Department of Aerospace Engineering and Engineering Mechanics, University of Texas, Austin, Texas 78712 (United States)] [Department of Aerospace Engineering and Engineering Mechanics, University of Texas, Austin, Texas 78712 (United States); Tamura, Nobumichi; Kunz, Martin [Advanced Light Source (ALS), Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720 (United States)] [Advanced Light Source (ALS), Lawrence Berkeley National Laboratory (LBNL), Berkeley, California 94720 (United States); Son, Ho-Young; Gyu Kim, Byoung [SK Hynix, Inc., Icheon-si, Gyeonggi-do (Korea, Republic of)] [SK Hynix, Inc., Icheon-si, Gyeonggi-do (Korea, Republic of)

    2013-11-18

    In this paper, we demonstrated the plasticity mechanism for copper (Cu) extrusion in through-silicon via structures under thermal cycling. The local plasticity was directly observed by synchrotron x-ray micro-diffraction near the top of the via with the amount increasing with the peak temperature. The Cu extrusion was confirmed by Atomic Force Microscopy (AFM) measurements and found to be consistent with the observed Cu plasticity behavior. A simple analytical model elucidated the role of plasticity during thermal cycling, and finite element analyses were carried out to confirm the plasticity mechanism as well as the effect of the via/Si interface. The model predictions were able to account for the via extrusions observed in two types of experiments, with one representing a nearly free sliding interface and the other a strongly bonded interface. Interestingly, the AFM extrusion profiles seemed to contour with the local grain structures near the top of the via, suggesting that the grain structure not only affects the yield strength of the Cu and thus its plasticity but could also be important in controlling the pop-up behavior and the statistics for a large ensemble of vias.

  15. Continuous Severe Plastic Deformation Processing of Aluminum Alloys

    SciTech Connect (OSTI)

    Raghavan Srinivasan (PI); Prabir K. Chaudhury; Balakrishna Cherukuri; Qingyou Han; David Swenson; Percy Gros

    2006-06-30

    Metals with grain sizes smaller than 1-micrometer have received much attention in the past decade. These materials have been classified as ultra fine grain (UFG) materials (grain sizes in the range of 100 to 1000-nm) and nano-materials (grain size <100-nm) depending on the grain size. This report addresses the production of bulk UFG metals through the use of severe plastic deformation processing, and their subsequent use as stock material for further thermomechanical processing, such as forging. A number of severe plastic deformation (SPD) methods for producing bulk UFG metals have been developed since the early 1990s. The most promising of these processes for producing large size stock that is suitable for forging is the equal channel angular extrusion or pressing (ECAE/P) process. This process involves introducing large shear strain in the work-piece by pushing it through a die that consists of two channels with the same cross-sectional shape that meet at an angle to each other. Since the cross-sections of the two channels are the same, the extruded product can be re-inserted into the entrance channel and pushed again through the die. Repeated extrusion through the ECAE/P die accumulates sufficient strain to breakdown the microstructure and produce ultra fine grain size. It is well known that metals with very fine grain sizes (< 10-micrometer) have higher strain rate sensitivity and greater elongation to failure at elevated temperature, exhibiting superplastic behavior. However, this superplastic behavior is usually manifest at high temperature (> half the melting temperature on the absolute scale) and very low strain rates (< 0.0001/s). UFG metals have been shown to exhibit superplastic characteristics at lower temperature and higher strain rates, making this phenomenon more practical for manufacturing. This enables part unitization and forging more complex and net shape parts. Laboratory studies have shown that this is particularly true for UFG metals produced by SPD techniques. This combination of properties makes UFG metals produced by SPD very attractive as machining, forging or extrusion stock, both from the point of view of formability as well as energy and cost saving. However, prior to this work there had been no attempt to transfer these potential benefits observed in the laboratory scale to industrial shop floor. The primary reason for this was that the laboratory scale studies had been conducted to develop a scientific understanding of the processes that result in grain refinement during SPD. Samples that had been prepared in the laboratory scale were typically only about 10-mm diameter and 50-mm long (about 0.5-inch diameter and 2-inches long). The thrust of this project was three-fold: (i) to show that the ECAE/P process can be scaled up to produce long samples, i.e., a continuous severe plastic deformation (CSPD) process, (ii) show the process can be scaled up to produce large cross section samples that could be used as forging stock, and (iii) use the large cross-section samples to produce industrial size forgings and demonstrate the potential energy and cost savings that can be realized if SPD processed stock is adopted by the forging industry. Aluminum alloy AA-6061 was chosen to demonstrate the feasibility of the approach used. The CSPD process developed using the principles of chamber-less extrusion and drawing, and was demonstrated using rolling and wire drawing equipment that was available at Oak Ridge National Laboratory. In a parallel effort, ECAE/P dies were developed for producing 100-mm square cross section SPD billets for subsequent forging. This work was carried out at Intercontinental Manufacturing Co. (IMCO), Garland TX. Forging studies conducted with the ECAE/P billets showed that many of the potential benefits of using UFG material can be realized. In particular, the material yield can be increased, and the amount of material that is lost as scrap can be reduced by as much as 50%. Forging temperatures can also be reduced by over 150ºC, resulting in energy savings in the ope

  16. Comparison of Lithium Gadolinium Borate Crystal Shards in Scintillating and Nonscintillating Plastic Matrices

    E-Print Network [OSTI]

    Kareem Kazkaz; Nathaniel S. Bowden; Marisa Pedretti

    2011-09-16

    We present a method for detecting neutrons using scintillating lithium gadolinium borate crystal shards in a plastic matrix while maintaining high gamma rejection. We have procured two cylindrical detectors, 5"\\times5", containing 1% crystal by mass. Crystal shards have a typical dimension of 1 mm. One detector was made with scintillating plastic, and one with nonscintillating plastic. Pulse shape analysis was used to reject gamma ray backgrounds. The scintillating detector was measured to have an intrinsic fast fission neutron efficiency of 0.4% and a gamma sensitivity of less than 2.3 \\times 10-9, while the nonscintillating detector had a neutron efficiency of 0.7% and gamma sensitivity of (4.75\\pm3.94)\\times10-9. We determine that increasing the neutron detection efficiency by a factor of 2 will make the detector competitive with moderated 3He tubes, and we discuss several simple and straightforward methods for obtaining or surpassing such an improvement. We end with a discussion of possible applications, both for the scintillating-plastic and nonscintillating-plastic detectors.

  17. Controlled catalytic and thermal sequential pyrolysis and hydrolysis of polycarbonate and plastic waste to recover monomers

    DOE Patents [OSTI]

    Evans, R.J.; Chum, H.L.

    1994-06-14

    A process is described using fast pyrolysis to convert a plastic waste feed stream containing polycarbonate and ABS to high value monomeric constituents prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of a given polymer to its high value monomeric constituents prior to a temperature range that causes pyrolysis of other plastic components; selecting an acid or base catalysts and an oxide or carbonate support for treating the feed stream to affect acid or base catalyzed reaction pathways to maximize yield or enhance separation of the high value monomeric constituents of polycarbonate and ABS in the first temperature program range; differentially heating the feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituents prior to pyrolysis or other plastic components; separating the high value monomeric constituents from the polycarbonate to cause pyrolysis to a different high value monomeric constituent of the plastic waste and differentially heating the feed stream at the second higher temperature program range to cause pyrolysis of different high value monomeric constituents; and separating the different high value monomeric constituents. 68 figs.

  18. Controlled catalystic and thermal sequential pyrolysis and hydrolysis of polycarbonate and plastic waste to recover monomers

    DOE Patents [OSTI]

    Evans, Robert J. (Lakewood, CO); Chum, Helena L. (Arvada, CO)

    1994-01-01

    A process of using fast pyrolysis to convert a plastic waste feed stream containing polycarbonate and ABS to high value monomeric constituents prior to pyrolysis of other plastic components therein comprising: selecting a first temperature program range to cause pyrolysis of a given polymer to its high value monomeric constituents prior to a temperature range that causes pyrolysis of other plastic components; selecting an acid or base catalysts and an oxide or carbonate support for treating the feed stream to affect acid or base catalyzed reaction pathways to maximize yield or enhance separation of the high value monomeric constituents of polycarbonate and ABS in the first temperature program range; differentially heating the feed stream at a heat rate within the first temperature program range to provide differential pyrolysis for selective recovery of optimum quantities of the high value monomeric constituents prior to pyrolysis or other plastic components; separating the high value monomeric constituents from the polycarbonate to cause pyrolysis to a different high value monomeric constituent of the plastic waste and differentially heating the feed stream at the second higher temperature program range to cause pyrolysis of different high value monomeric constituents; and separating the different high value monomeric constituents.

  19. Flowing with the Tide:Epiphytic Host-Specificity and Phenotypic Plasticity of the Brown Alga Padina boryana

    E-Print Network [OSTI]

    Flynn, Sierra Michelle

    2011-01-01

    PLASTICITY OF THE BROWN ALGA PADINA BORYANA SIERRA M. FLYNN94720 USA Abstract. Epiphytic algae form complex communitiesmacroalgae hosts. The brown alga Padina boryana acts as a

  20. Assessing the benefits of design for recycling for plastics in electronics: A case study of computer enclosures

    E-Print Network [OSTI]

    Masanet, Eric; Horvath, Arpad

    2007-01-01

    plastics from consumer electronics, Proceedings of the 2003international symposium on electronics and the environment,international symposium on electronics and the environment,

  1. Plastic flow in a sheared polycrystalline solid using phase field model

    E-Print Network [OSTI]

    Santidan Biswas; Martin Grant; Indradev Samajdar; Arunansu Haldar; Anirban Sain

    2013-03-06

    Plastic deformation in solids induced by external shear stress is of huge practical interest. Presence of local crystalline order in polycrystals, consisting of many grains, distinguishes its deformation pattern from that of amorphous materials. Despite strong anisotropy, induced by external stress, the plastic flow and the consequent deformation field show strong dynamical heterogeneity. The distribution $P(u)$ of particle displacements ($u$) shows three distinct regimes including a power law scaling regime at moderate displacements. Using a phase field simulation we show how polycrystals generate saddle and vortex like flow patterns, which hitherto have been termed as elementary plastic events in the context of amorphous materials. Interestingly, such events here find natural explanation in terms of the underlying dislocation dynamics. We also characterize the spatial distribution of the flow field using Okubo-Weiss measure.

  2. Predictors of plasticity in bituminous coals. Technical progress report No. 2, March 1, 1982

    SciTech Connect (OSTI)

    Lloyd, W. G.; Reasoner, J. W.; Hower, J. C.; Yates, L. P.; Clark, C. P.; Jones, T. M.; Sturgeon, L. P.; Whitt, J. M.

    1982-03-01

    The approach of this study is to secure three dozen (or more) coals of varying rank, composition and plasticity, and to analyze these coals carefully by standard chemical and petrographic techniques. The bitumen fractions will be determined, both by THF (asphaltenes but not preasphaltenes) and DMF (everything). Pyrolysis gas chromatography on both whole coals and extracted residues will compare capacities to generate metaplast. Extracts from coals with plasticities differing by at least four orders of magnitude will be examined for identifiable differences; extraction residues will be subjected to differential FTIR analysis. All of the data will be combined and subjected to systematic statistical analysis with the objective of identifying predictors of coal plasticity. This report describes the work in the first six months of the study. During this period equipment and instrumentation has been obtained, 24 coal samples have been obtained, the nonclassical methods have been developed and checked out, and an appreciable amount of experimentl data has been obtained.

  3. Scale-up and Technology Transfer of Protein-based Plastic Products

    SciTech Connect (OSTI)

    Grewell, David

    2008-12-08

    Over the last number of years researchers at ISU have been developing protein based plastics from soybeans, funded by Soy Works Corporation. These materials have been characterized and the processing of these materials into prototype products has been demonstrated. A wide range of net-shape forming processes, including but not limited to extrusion, injection molding and compression molding have been studied. Issues, including technology transfer, re-formulation and product consistency, have been addressed partially during this contract. Also, commercial-scale processing parameters for protein based plastic products were designed, but not yet applicable in the industry. Support in the trouble shooting processing and the manufacturing of protein based plastic products was provided by Iowa State University during the one year contract.

  4. Cooperativity and Heterogeneity in Plastic Crystals Studied by Nonlinear Dielectric Spectroscopy

    E-Print Network [OSTI]

    M. Michl; Th. Bauer; P. Lunkenheimer; A. Loidl

    2015-01-28

    The glassy dynamics of plastic-crystalline cyclo-octanol and ortho-carborane, where only the molecular reorientational degrees of freedom freeze without long-range order, is investigated by nonlinear dielectric spectroscopy. Marked differences to canonical glass formers show up: While molecular cooperativity governs the glassy freezing, it leads to a much weaker slowing down of molecular dynamics than in supercooled liquids. Moreover, the observed nonlinear effects cannot be explained with the same heterogeneity scenario recently applied to canonical glass formers. This supports ideas that molecular relaxation in plastic crystals may be intrinsically non-exponential. Finally, no nonlinear effects were detected for the secondary processes in cyclo-octanol.

  5. Mechanical and microscopic properties of the reversible plastic regime in a 2D jammed material

    E-Print Network [OSTI]

    Nathan C. Keim; Paulo E. Arratia

    2013-11-20

    At the microscopic level, plastic flow of a jammed, disordered material consists of a series of particle rearrangements that cannot be reversed by subsequent deformation. An infinitesimal deformation of the same material has no rearrangements. Yet between these limits, there may be a self-organized plastic regime with rearrangements, but with no net change upon reversing a deformation. We measure the oscillatory response of a jammed interfacial material, and directly observe rearrangements that couple to bulk stress and dissipate energy, but do not always give rise to global irreversibility.

  6. Methods for minimizing plastic flow of oil shale during in situ retorting

    DOE Patents [OSTI]

    Lewis, Arthur E. (Los Altos, CA); Mallon, Richard G. (Livermore, CA)

    1978-01-01

    In an in situ oil shale retorting process, plastic flow of hot rubblized oil shale is minimized by injecting carbon dioxide and water into spent shale above the retorting zone. These gases react chemically with the mineral constituents of the spent shale to form a cement-like material which binds the individual shale particles together and bonds the consolidated mass to the wall of the retort. This relieves the weight burden borne by the hot shale below the retorting zone and thereby minimizes plastic flow in the hot shale. At least a portion of the required carbon dioxide and water can be supplied by recycled product gases.

  7. Plastic damping of Alfv\\'en waves in magnetar flares and delayed afterglow emission

    E-Print Network [OSTI]

    Li, Xinyu

    2015-01-01

    Magnetar flares generate Alfv\\'en waves bouncing in the closed magnetosphere with energy up to $\\sim 10^{46}$ erg. We show that on a 10-ms timescale the waves are transmitted into the star and form a compressed packet of high energy density. This packet strongly shears the stellar crust and initiates a plastic flow, heating the crust and melting it hundreds of meters below the surface. A fraction of the deposited plastic heat is eventually conducted to the stellar surface, contributing to the surface afterglow months to years after the flare. A large fraction of heat is lost to neutrino emission or conducted into the core of the neutron star.

  8. Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison

    DOE Patents [OSTI]

    Pechersky, Martin J. (241 Chardonnat La., Aiken, SC 29803)

    1995-01-01

    A method for measuring residual stress in a material comprising the steps of establishing a speckle pattern on the surface with a first laser then heating a portion of that pattern with an infrared laser until the surface plastically deforms. Comparing the speckle patterns before and after deformation by subtracting one pattern from the other will produce a fringe pattern that serves as a visual and quantitative indication of the degree to which the plasticized surface responded to the stress dung heating and enables calculation of the stress.

  9. TRANSFORMATION OF PHB AND PHBV GENES DRIVEN BY MAIZE UBIQUITIN PROMOTER INTO OIL PALM FOR THE PRODUCTION OF BIODEGRADABLE PLASTICS

    E-Print Network [OSTI]

    Sinskey, Anthony J.

    FOR THE PRODUCTION OF BIODEGRADABLE PLASTICS 77 Keywords: biodegradable plastics, oil palm, transgenic, biolistics-CoA in bacteria were transformed into oil palm embryogenic calli. For the production of copolymerTRANSFORMATION OF PHB AND PHBV GENES DRIVEN BY MAIZE UBIQUITIN PROMOTER INTO OIL PALM

  10. 1546 IEEE SENSORS JOURNAL, VOL. 8, NO. 9, SEPTEMBER 2008 High Sensitivity Plastic-Substrate Photonic Crystal Biosensor

    E-Print Network [OSTI]

    Cunningham, Brian

    ]. Previously, photonic crystal optical biosensors have been fabricated on continuous sheets of plastic film1546 IEEE SENSORS JOURNAL, VOL. 8, NO. 9, SEPTEMBER 2008 High Sensitivity Plastic-Substrate Photonic Crystal Biosensor Ian D. Block, Maria Pineda, Charles J. Choi, and Brian T. Cunningham Abstract

  11. Dislocation-Source Shutdown and the Plastic Behavior of Single-Crystal Micropillars K. W. Schwarz,2

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    Dislocation-Source Shutdown and the Plastic Behavior of Single-Crystal Micropillars H. Tang,1 K. W to study the stress-strain response of single-crystal micropillars containing initial dislocation networks, when such networks are loaded, they exhibit periods of plastic deformation, caused by the operation

  12. Morley Symposium on Concrete Plasticity and its Application. University of Cambridge 23 AFFINITY PROPERTIES OF TRUSS MODEL NODES

    E-Print Network [OSTI]

    Burgoyne, Chris

    Morley Symposium on Concrete Plasticity and its Application. University of Cambridge 23 rd July, 2007 AFFINITY PROPERTIES OF TRUSS MODEL NODES Douglas CLYDE Emeritus Professor, The University of Western Australia, Nedlands, Western Australia Keywords: plasticity, lower bound, strut and tie, nodes. 1

  13. The Journal of Neuroscience, 2000, Vol. 20 RC52 1 of 5 Immediate Neural Plasticity Shapes Motor

    E-Print Network [OSTI]

    Munoz, Douglas Perry

    The Journal of Neuroscience, 2000, Vol. 20 RC52 1 of 5 Immediate Neural Plasticity Shapes Motor Performance Michael C. Dorris, Martin Pare´ , and Douglas P. Munoz Medical Research Council Group in Sensory­Motor of motor skills necessitates long-lasting changes in the nervous system. For the most part, plasticity has

  14. 1Plastic deformation and fracture processes in metallic and ceramic nanomaterials... 2007 Advanced Study Center Co. Ltd.

    E-Print Network [OSTI]

    Ovid'ko Ilya A.

    compositions of large grains and the nanocrystalline matrix can be either identical or different. Obviously1Plastic deformation and fracture processes in metallic and ceramic nanomaterials... © 2007-mail: ovidko@def.ipme.ru PLASTIC DEFORMATION AND FRACTURE PROCESSES IN METALLIC AND CERAMIC NANOMATERIALS

  15. Effects of plastic constraint on the cyclic and static fatigue behavior of metal/ceramic layered structures

    E-Print Network [OSTI]

    Ritchie, Robert

    Effects of plastic constraint on the cyclic and static fatigue behavior of metal/ceramic layered of metal/ceramic layered structures is examined under cyclic and static loading conditions. Crack-crack growth; Stress-corrosion cracking; Plastic constraint; Alumina; Aluminum 1. Introduction Metal/ceramic

  16. Sociology and Agriculture Interwoven (or Nonwoven?) Vegetable growers depend on plastic mulches to control weeds, conserve moisture, warm soil and

    E-Print Network [OSTI]

    Tennessee, University of

    Sociology and Agriculture Interwoven (or Nonwoven?) Vegetable growers depend on plastic mulches-based mulch, along with the standard black plastic and a biodegradable paper mulch. UT materials scientists mulches (BDMs) in Washington, Texas and Tennessee. The objective of the project is to compare tomato

  17. Optoelectronic properties of poly(fluorene) co-polymer light-emitting devices on a plastic substrate*

    E-Print Network [OSTI]

    Kanicki, Jerzy

    displays. Thus far, most of the organic light-emitting device (OLED) displays are fabri- cated on rigidOptoelectronic properties of poly(fluorene) co-polymer light-emitting devices on a plastic of red, green, and blue poly(fluorene) co-polymer light- emitting devices (PLEDs) on a plastic substrate

  18. New plastic circuits could replace paper -(United Press Inte... http://washingtontimes.com/upi-breaking/20040311-084413... 1 of 4 3/15/2004 8:55 PM

    E-Print Network [OSTI]

    Rogers, John A.

    New plastic circuits could replace paper - (United Press Inte... http plastic circuits could replace paper By Charles Choi United Press International NEW YORK, March 11 (UPI) -- Scientists at Lucent Technologies and an academic institution have created the highest performance plastic

  19. Effect of adaptor duration on 8-year-olds' facial identity aftereffects suggests adult-like plasticity of the face norm

    E-Print Network [OSTI]

    Maurer, Daphne M.

    -like plasticity of the face norm Mayu Nishimura a,b, , Crystal Robertson b , Daphne Maurer b a Department Face-space Identity aftereffects Plasticity a b s t r a c t Adapting to a face shifts the perceived

  20. The giant plasticity of a quantum crystal -Supplemental Material Ariel Haziot1

    E-Print Network [OSTI]

    Balibar, Sébastien

    The giant plasticity of a quantum crystal - Supplemental Material Ariel Haziot1 , Xavier Rojas1 transducers [11] in order to shear crystals that are grown in the gap between them. The thickness of this gap is attached to a dilution refrigerator which allows measurements down to 15 mK. 4 He crystals are grown inside

  1. Plasmonic Metasurfaces for Coloration of Plastic Consumer Products Jeppe S. Clausen,

    E-Print Network [OSTI]

    Levy, Uriel

    -based coloring of polymers is used in the fabrication of almost any type of plastic-based consumer product, either as base color in the bulk polymer or in surface- decoration inks. The mixing of many colorants in a single product is both costly and limits the possibilities for recycling as separation of the different

  2. Evolutionary analyses of morphological and physiological plasticity in thermally variable environments.

    E-Print Network [OSTI]

    Huey, Raymond B.

    of plasticity in response to the thermal environment may be particularly valuable in understanding the role be mechanistically and physiologically linked to the thermal environment, but also the variability and predictability of the thermal environment itself can be quantified on ecologically relevant time scales. We illustrate

  3. Large Plastic Deformation in High-Capacity Lithium-Ion Batteries Caused by Charge and Discharge

    E-Print Network [OSTI]

    Suo, Zhigang

    Large Plastic Deformation in High-Capacity Lithium-Ion Batteries Caused by Charge and Discharge, Massachusetts 02138 Evidence has accumulated recently that a high-capacity elec- trode of a lithium-ion battery in the particle is high, possibly leading to fracture and cavitation. I. Introduction LITHIUM-ION batteries

  4. Development/Plasticity/Repair The Bone Morphogenetic Protein Roof Plate Chemorepellent

    E-Print Network [OSTI]

    Butler, Samantha

    Development/Plasticity/Repair The Bone Morphogenetic Protein Roof Plate Chemorepellent Regulates, Toronto, Ontario, Canada M5G 1X8 Commissural spinal axons extend away from the roof plate (RP) in response to the dorsal midline and are generated by the bone morphogenetic proteins (BMPs) in the roof plate (RP) (Liem

  5. Computational Modeling of Neural Plasticity for Self-Organization of Neural Networks

    E-Print Network [OSTI]

    Jin, Yaochu

    Computational Modeling of Neural Plasticity for Self-Organization of Neural Networks Joseph Chrol on the learning per- formance of neural networks for accomplishing machine learning tasks such as classication, dynamics and learning per- formance of neural networks remains elusive. The purpose of this article

  6. Bainite Orientation in Plastically Deformed Austenite International Journal of Materials Research 100 (2009) 40-45.

    E-Print Network [OSTI]

    Cambridge, University of

    2009-01-01

    crystallographic variants of bainite form in polycrystalline steel when transformation occurs from plastically pulled to strains of some 10% in tension [19, 20]. In the context of martensitic transformation, the fraction of martensite induced has been shown to linearly correlate with the applied tensile stress even

  7. Systems/Circuits Structure of Plasticity in Human Sensory and Motor

    E-Print Network [OSTI]

    Gribble, Paul

    Systems/Circuits Structure of Plasticity in Human Sensory and Motor Networks Due to Perceptual, and 3Haskins Laboratories, New Haven, Connecticut 06511 As we begin to acquire a new motor skill, we and establishing the best motor commands to achieve our ends. The two typically proceed in parallel

  8. Transient Plasticity of Hippocampal CA1 Neuron Glutamate Receptors Contributes to Benzodiazepine

    E-Print Network [OSTI]

    Abraham, Nader G.

    users and abusers continue to use BZs to avoid withdrawal symptoms. Thus, a typical drug-dependenceTransient Plasticity of Hippocampal CA1 Neuron Glutamate Receptors Contributes to Benzodiazepine Withdrawal-Anxiety Bradley J Van Sickle1 , Kun Xiang1 and Elizabeth I Tietz*,1 1 Department of Pharmacology

  9. Sensors and Actuators A 127 (2006) 270275 Plastic 95-GHz rectangular waveguides by micro molding technologies

    E-Print Network [OSTI]

    Lin, Liwei

    2006-01-01

    Sensors and Actuators A 127 (2006) 270­275 Plastic 95-GHz rectangular waveguides by micro molding technologies Firas Sammouraa,, Yu-Chuan Sua, Ying Caib, Chen-Yu Chic, Bala Elamaranc, Liwei Lina, Jung at Arlington, Arlington, TX 76019-0016, USA c Agilent Technologies, 1400 Fountain Grove Pky, San Rosa, CA 95403

  10. Saturation of surface roughening instabilities by plastic deformation Michael Andersen,1,a

    E-Print Network [OSTI]

    Ghoniem, Nasr M.

    by a competition between elastic and surface energy contributions are shown to be saturated by plastic energy as predicted by consideration of elastic energy alone and that their growth is limited by dislocation emission that the driving force for the instability is the reduction in the elastic energy of the solid when its surface

  11. Genomic Plasticity Enables Phenotypic Variation of Pseudomonas syringae pv. tomato DC3000

    E-Print Network [OSTI]

    Myers, Chris

    Genomic Plasticity Enables Phenotypic Variation of Pseudomonas syringae pv. tomato DC3000 Zhongmeng of a genomic anomaly in the region of 4.7 to 4.9 Mb of the Pseudomonas syringae pv. tomato (Pst) DC3000 genome in P. syringae. Citation: Bao Z, Stodghill PV, Myers CR, Lam H, Wei H-L, et al. (2014) Genomic

  12. Development/Plasticity/Repair The ERK2 Mitogen-Activated Protein Kinase Regulates the

    E-Print Network [OSTI]

    Development/Plasticity/Repair The ERK2 Mitogen-Activated Protein Kinase Regulates the Timing Oligodendrocytedevelopmentistightlycontrolledbyavarietyofextracellulargrowthanddifferentiationfactors.Themitogen-activated protein kinases (MAPKs), ERK1 and ERK2, are critical intracellular signaling (ERKs) are ubiquitously expressed, coordinately regulated, and highly similar, but Erk2 deletion in mice

  13. Development/Plasticity/Repair Phosphatidylinositol 3-Kinase Activates ERK in Primary

    E-Print Network [OSTI]

    Clapham, David E.

    Development/Plasticity/Repair Phosphatidylinositol 3-Kinase Activates ERK in Primary Sensory activation to inflammatory pain. We further investigated the correlationbetweenthePI3KandtheERK294002 and wortmannin, indicative of the activation of PI3K by both agents. ERK activation by capsaicin

  14. ERK2: a logical AND gate critical for drug-induced plasticity? Truncated title

    E-Print Network [OSTI]

    1 Title: ERK2: a logical AND gate critical for drug-induced plasticity? Truncated title: ERK2 signal-regulated kinase (ERK) plays an important role in the underlying molecular mechanisms. ERK. Blockade of ERK activation prevents long- lasting behavioral changes, including psychomotor sensitization

  15. Mechanical noise dependent Aging and Shear Banding behavior of a mesoscopic model of amorphous plasticity

    E-Print Network [OSTI]

    Damien Vandembroucq; Stéphane Roux

    2011-12-05

    We discuss aging and localization in a simple "Eshelby" mesoscopic model of amorphous plasticity. Plastic deformation is assumed to occur through a series of local reorganizations. Using a discretization of the mechanical fields on a discrete lattice, local reorganizations are modeled as local slip events. Local yield stresses are randomly distributed in space and invariant in time. Each plastic slip event induces a long-ranged elastic stress redistribution. Mimicking the effect of aging, we focus on the behavior of the model when the initial state is characterized by a distribution of high local yield stress values. A dramatic effect on the localization behavior is obtained: the system first spontaneously self-traps to form a shear band which then only slowly widens. The higher the "age" parameter the more localized the plastic strain field. Two-time correlation computed on the stress field show a divergent correlation time with the age parameter. The amplitude of a local slip event (the prefactor of the Eshelby singularity) as compared to the yield stress distribution width acts here as an effective temperature-like parameter: the lower the slip increment, the higher the localization and the decorrelation time.

  16. About contacts of adhesive, elasto-plastic, frictional powders Stefan Luding

    E-Print Network [OSTI]

    Luding, Stefan

    About contacts of adhesive, elasto-plastic, frictional powders Stefan Luding Multi Scale Mechanics with peculiar pressure dependence, for adhesive powders ­ due to the nonlinear dependence of the contact adhesion on the confining forces. Introduction Granular materials have various applications, involving geo

  17. Nonlinear Rate-Dependent Material Model with Damage and Plasticity from Granular Micromechanics Approach

    E-Print Network [OSTI]

    Singh, Viraj

    2014-05-31

    -mechanics to develop a physics based constitutive model with included damage and plasticity at micro-scale. To obtain the stress-strain behavior, appropriate micro-scale force displacement relationship is used along with the kinematic assumption and theory of stress...

  18. Design and manufacture of plastic markers for Agile Atoms DNA Set

    E-Print Network [OSTI]

    So, Joanna (Joanna Kelly)

    2015-01-01

    My thesis focused on the design and manufacturing of plastic parts for the Agile Atoms DNA Set that is distributed by the MIT Edgerton Center. The design of the parts had to be easy to manufacture in-house, be easily ...

  19. Compressed Air System Modifications Improve Efficiency at a Plastics Blow Molding Plant (Southeastern Container Plant)

    SciTech Connect (OSTI)

    None

    2001-06-01

    This case study is one in a series on industrial firms who are implementing energy efficient technologies and system improvements into their manufacturing processes. This case study documents the activities, savings, and lessons learned on the plastics blow molding plant project.

  20. Development/Plasticity/Repair NG2 Glia Generate New Oligodendrocytes But Few

    E-Print Network [OSTI]

    Richardson, William D.

    Development/Plasticity/Repair NG2 Glia Generate New Oligodendrocytes But Few Astrocytes in a Murine-derived growth factor receptor subunit (PDGFRA) and the NG2 proteoglycan. These "NG2 cells" descend from and white matter of the postnatal brain. It has been proposed that NG2 cells can also