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1

Sandia National Laboratories: Sandia/KAFB Wind Farm  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErikGroundbreaking Work on CriegeeElectronics inClimateECEnergySandia/KAFB Wind

2

Ellsworth Air Force Base Advanced Metering Project  

Broader source: Energy.gov [DOE]

Presentation covers the Ellsworth Air Force Base Advanced Metering project and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

3

Comprehensive Energy Program at Patrick Air Force Base Set to...  

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

Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals Fact sheet...

4

Hickam Air Force Base Fuel Cell Vehicles: Early Implementation...  

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

Hickam Air Force Base Fuel Cell Vehicles: Early Implementation Experience Hickam Air Force Base Fuel Cell Vehicles: Early Implementation Experience This report sumarizes early...

5

Natural Heritage Inventory of Schriever Air Force Base,  

E-Print Network [OSTI]

Natural Heritage Inventory of Schriever Air Force Base, El Paso County, Colorado Colorado Natural-491-1309 July 2000 #12;Natural Heritage Inventory of Schriever Air Force Base, El Paso County, Colorado Prepared

6

Case Study- Hill Air Force Base, Utah  

Broader source: Energy.gov [DOE]

Energy savings performance contracting at Hill Air Force Base generated much interest during a recent training session on energy management that downlinked 12 Department of Defense sites. Energy systems in 940 buildings on the Base will be upgraded under an 18-year ESPC between the Government and the energy service company, CES/Way. Improvements are distributed over five task orders that will be completed in five years, with CES/Way providing $2.5 million in up-front costs for the first two task orders. Utah Power & Light will provide $8 million in rebates to help cover the contractor's initial investment, maintenance services, and interest costs. The remainder of the costs will be reimbursed from the Government's share of energy savings.

7

ENERGY BASED ICE COLLISION FORCES Claude Daley1  

E-Print Network [OSTI]

ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

Daley, Claude

8

ENERGY BASED ICE COLLISION FORCES Claude Daley1  

E-Print Network [OSTI]

1 ENERGY BASED ICE COLLISION FORCES Claude Daley1 1 Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1C 3X5 ABSTRACT Ice collision forces can be determined by energy considerations. A variety of interaction geometry cases are considered. The indentation energy functions for eight different

Daley, Claude

9

air force base: Topics by E-print Network  

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

Index 1 Energy Savings Performance Contract- Robins Air Force Base, Georgia Texas A&M University - TxSpace Summary: Due to budgetary constraints and lack of funding for energy...

10

air force bases: Topics by E-print Network  

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

Index 1 Energy Savings Performance Contract- Robins Air Force Base, Georgia Texas A&M University - TxSpace Summary: Due to budgetary constraints and lack of funding for energy...

11

ESPC Success Story- Dyess Air Force Base  

Broader source: Energy.gov [DOE]

Fact sheet describes the Federal Energy Management Program (FEMP) Energy Savings Performance Contract (ESPC) Success Story on water conservation and green energy at Dyess Air Foce Base at Dyess, Texas.

12

06-08-2010 NNSA-B-10-0281  

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

06-08-2010 NNSA-B-10-0281 SNLNM proposes to assist Kirtland Air Force Base (KAFB) contract biologists in the use of track surveys and systematic camera arrays to assess the...

13

An Energy-Based Approach for Contact Force Computation  

E-Print Network [OSTI]

An Energy-Based Approach for Contact Force Computation Fran¸cois Faure Francois.Faure@imag.fr, i. The subsequent iterations consist of global redistributions of energy through the solids in order to restrict widely addressed in computer graphics research. The dynamics equations are now well-known and used

Paris-Sud XI, Université de

14

Geothermal-resource verification for Air Force bases  

SciTech Connect (OSTI)

This report summarizes the various types of geothermal energy reviews some legal uncertainties of the resource and then describes a methodology to evaluate geothermal resources for applications to US Air Force bases. Estimates suggest that exploration costs will be $50,000 to $300,000, which, if favorable, would lead to drilling a $500,000 exploration well. Successful identification and development of a geothermal resource could provide all base, fixed system needs with an inexpensive, renewable energy source.

Grant, P.R. Jr.

1981-06-01T23:59:59.000Z

15

Demonstration of Security Benefits of Renewable Generation at FE Warren Air Force Base  

SciTech Connect (OSTI)

Report detailing field demonstration of security benefits of renewable generation at FE Warren Air Force Base.

Warwick, William M.; Myers, Kurt; Seifert, Gary

2010-12-31T23:59:59.000Z

16

Energy Efficiency Upgrades for Little Rock Air Force Base  

SciTech Connect (OSTI)

Little Rock Air Force Base (LRAFB), in partnership with the local utility, Entergy Services, Inc., has reduced energy costs and used savings from investments in high-efficiency equipment to maintain and improve the condition of base housing and other facilities. Three projects were completed, with over $10 million invested. Major accomplishments include replacing air-to-air heat pumps with high-efficiency ground-source heat pumps (GSHPs) in more than 1,500 base housing units, lighting modifications to 10 buildings, upgrade of HVAC equipment in the base's enlisted club, and energy-efficient lighting retrofits for LRAFB's flight simulator.

Goldman, C.; Dunlap, M.A.

2000-11-13T23:59:59.000Z

17

Rendering of Environmental Force Feedback in Mobile Robot Teleoperation based on Fuzzy Logic  

E-Print Network [OSTI]

. Remote control of mobile robot with force reflection and fuzzy logic based velocity control was presentedRendering of Environmental Force Feedback in Mobile Robot Teleoperation based on Fuzzy Logic Ildar force feedback in mobile robot teleoperation based on fuzzy logic is presented. To ensure safety

Ryu, Jee-Hwan

18

Magnetic nanowire based high resolution magnetic force microscope probes  

E-Print Network [OSTI]

-resolution magnetic force microscope probes using preformed magnetic nanowires. Nickel and cobalt nanowires produced by electrodeposition were directly assembled onto the tip of a commercial atomic force microscope cantilever

Qin, Lu-Chang

19

Periodic forcing of a 555-IC based hysteretic oscillator  

E-Print Network [OSTI]

In this work we designed and developed a master-slave electronic oscillatory system (based on the 555-timer IC working in the astable mode), and investigated its dynamic behavior regarding synchronization. For that purpose we measured the circulation number corresponding to the phase-locking rhythm achieved in a large set of values of the normalized forcing period (NFP) and of the coupling strength between the master and the slave oscillators. In particular we were interested in the system behavior in the strong-coupling limit, because such problem has not been extensively studied from an experimental perspective. Our results indicate the existence of a degenerate codimension-2 bifurcation point at NFP=1:2, where all the phase-locking regions converge in the very strong coupling limit. These findings were corroborated by a mathematical model we developed to that end.

Moises Santillan

2014-08-12T23:59:59.000Z

20

Sensors and Actuators A xxx (2004) xxxxxx Micromachined silicon force sensor based on diffractive optical  

E-Print Network [OSTI]

Sensors and Actuators A xxx (2004) xxx­xxx Micromachined silicon force sensor based on diffractive-based force sensor integrated with a surface micromachined silicon-nitride probe for penetration and injection that is designed to only be sensitive to axial deflections of the probe. The optical-encoder force sensor exhibits

Quake, Stephen R.

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Tunable polarity of the Casimir force based on saturated ferrites  

SciTech Connect (OSTI)

We study the polarity of the Casimir force between two different parallel slabs separated by vacuum when the saturated ferrite materials under the influence of an external magnetic field are taken into consideration. Between the ordinary dielectric slab and the ferrite slab, repulsive Casimir force may be observed by adjusting the applied magnetic field. For the ferrite material, we consider the frequency dependence of the permeability modified by the external magnetic field to analyze the formation of the repulsive Casimir force. The restoring force, which means the transition of the force polarity from repulsion to attraction with the increasing slab separation, can also be obtained between two different ferrite slabs.

Zeng Ran [School of Telecommunication, Hangzhou Dianzi University, Hangzhou 310018 (China); Yang Yaping [Department of Physics, Tongji University, Shanghai 200092 (China); Beijing Computational Science Research Center, Beijing 100084 (China)

2011-01-15T23:59:59.000Z

22

Energy Savings Performance Contract- Robins Air Force Base, Georgia  

E-Print Network [OSTI]

Due to budgetary constraints and lack of funding for energy savings initiatives, government energy managers are being forced to develop new techniques by which energy savings technologies can be procured. One such mechanism for obtaining energy...

Edge, J. S.

23

Study of Thermal Properties of Graphene-Based Structures Using the Force Constant Method  

E-Print Network [OSTI]

Study of Thermal Properties of Graphene-Based Structures Using the Force Constant Method Hossein, 2012) Abstract The thermal properties of graphene-based materials are theoretically investigated transport is investigated for different structures including graphene, graphene antidot lat- tices

24

FIELD EXPERIMENTATION OF COTS-BASED UAV NETWORKING Air Force Research Laboratory  

E-Print Network [OSTI]

1 of 7 FIELD EXPERIMENTATION OF COTS-BASED UAV NETWORKING Dan Hague Air Force Research Laboratory Vehicles (UAVs). This new capability has inspired many novel application ideas in UAV networking. We argue that field experimentation of UAV networking is essential in collecting link meas- urement data, developing

Kung, H. T.

25

Interaction of Coupled Particles Based on Lennard-Jones and Spring Forces in Brownian Ratchet Devices  

E-Print Network [OSTI]

Interaction of Coupled Particles Based on Lennard-Jones and Spring Forces in Brownian Ratchet particles moving in one-dimensional flashing ratchet is considered. Lennard-Jones type interaction. Keywords: Brownian motor; Coupled ratchet; Elastic coupling; Lennard-Jones potential; DNA separation 1

Gleeson, James P.

26

A lightning summary and decision model for thunderstorm prediction at Whiteman Air Force Base, Missouri  

E-Print Network [OSTI]

A cloud-to-ground lightning summary was developed for a 139xl85 kilometer area centered at Whiteman Air Force Base. Spatial and temporal patterns, and first stroke peak currents were analyzed from 1989-1995. Stability indices were examined...

Bass, Randall Gerald

1996-01-01T23:59:59.000Z

27

Hamiltonian-based numerical methods for forced-dissipative climate prediction  

E-Print Network [OSTI]

Hamiltonian-based numerical methods for forced-dissipative climate prediction Bob Peeters1 , Onno long-term weather forecast models fail at this point. But the question remains, however: Question: Is it advantageous to use numerical schemes with a Hamil- tonian core for realistic climate modeling? The primitive

Al Hanbali, Ahmad

28

Mountain Home Air Force Base, Idaho Geothermal Resource Assessment and Future Recommendations  

SciTech Connect (OSTI)

The U.S. Air Force is facing a number of challenges as it moves into the future, one of the biggest being how to provide safe and secure energy to support base operations. A team of scientists and engineers met at Mountain Home Air Force Base in early 2011 near Boise, Idaho, to discuss the possibility of exploring for geothermal resources under the base. The team identified that there was a reasonable potential for geothermal resources based on data from an existing well. In addition, a regional gravity map helped identify several possible locations for drilling a new well. The team identified several possible sources of funding for this wellthe most logical being to use U.S. Department of Energy funds to drill the upper half of the well and U.S. Air Force funds to drill the bottom half of the well. The well was designed as a slimhole well in accordance with State of Idaho Department of Water Resources rules and regulations. Drilling operations commenced at the Mountain Home site in July of 2011 and were completed in January of 2012. Temperatures increased gradually, especially below a depth of 2000 ft. Temperatures increased more rapidly below a depth of 5500 ft. The bottom of the well is at 5976 ft, where a temperature of about 140C was recorded. The well flowed artesian from a depth below 5600 ft, until it was plugged off with drilling mud. Core samples were collected from the well and are being analyzed to help understand permeability at depth. Additional tests using a televiewer system will be run to evaluate orientation and directions at fractures, especially in the production zone. A final report on the well exploitation will be forthcoming later this year. The Air Force will use it to evaluate the geothermal resource potential for future private development options at Mountain Home Air Force Base. In conclusion, Recommendation for follow-up efforts include the following:

Joseph C. Armstrong; Robert P. Breckenridge; Dennis L. Nielson; John W. Shervais; Thomas R. Wood

2013-03-01T23:59:59.000Z

29

Economic analysis of coal-fired cogeneration plants for Air Force bases  

SciTech Connect (OSTI)

The Defense Appropriations Act of 1986 requires the Department of Defense to use an additional 1,600,000 tons/year of coal at their US facilities by 1995 and also states that the most economical fuel should be used at each facility. In a previous study of Air Force heating plants burning gas or oil, Oak Ridge National Laboratory found that only a small fraction of this target 1,600,000 tons/year could be achieved by converting the plants where coal is economically viable. To identify projects that would use greater amounts of coal, the economic benefits of installing coal-fired cogeneration plants at 7 candidate Air Force bases were examined in this study. A life-cycle cost analysis was performed that included two types of financing (Air Force and private) and three levels of energy escalation for a total of six economic scenarios. Hill, McGuire, and Plattsburgh Air Force Bases were identified as the facilities with the best potential for coal-fired cogeneration, but the actual cost savings will depend strongly on how the projects are financed and to a lesser extent on future energy escalation rates. 10 refs., 11 figs., 27 tabs.

Holcomb, R.S.; Griffin, F.P.

1990-10-01T23:59:59.000Z

30

Exploration and Resource Assessment at Mountain Home Air Force Base, Idaho Using an Integrated Team Approach  

SciTech Connect (OSTI)

The U.S. Air Force is facing a number of challenges as it moves into the future, one of the biggest being how to provide safe and secure energy to support base operations. A team of scientists and engineers met at Mountain Home Air Force Base near Boise, Idaho, to discuss the possibility of exploring for geothermal resources under the base. The team identified that there was a reasonable potential for geothermal resources based on data from an existing well. In addition, a regional gravity map helped identify several possible locations for drilling a new well. The team identified several possible sources of funding for this wellthe most logical being to use U.S. Department of Energy funds to drill the upper half of the well and U.S. Air Force funds to drill the bottom half of the well. The well was designed as a slimhole well in accordance with State of Idaho Department of Water Resources rules and regulations. Drilling operations commenced at the Mountain Home site in July of 2011 and were completed in January of 2012. Temperatures increased gradually, especially below a depth of 2000 ft. Temperatures increased more rapidly below a depth of 5500 ft. The bottom of the well is at 5976 ft, where a temperature of about 140C was recorded. The well flowed artesian from a depth below 5600 ft, until it was plugged off with drilling mud. Core samples were collected from the well and are being analyzed to help understand permeability at depth. Additional tests using a televiewer system will be run to evaluate orientation and directions at fractures, especially in the production zone. A final report on the well exploitation will be forthcoming later this year. The Air Force will use it to evaluate the geothermal resource potential for future private development options at Mountain Home AFB.

Joseph C. Armstrong; Robert P. Breckenridge; Dennis L. Nielson; John W. Shervais; Thomas R. Wood

2012-10-01T23:59:59.000Z

31

Geothermal exploration program, Hill Air Force Base, Davis and Weber Counties, Utah  

SciTech Connect (OSTI)

Results obtained from a program designed to locate a low- or moderate-temperature geothermal resource that might exist beneath Hill Air Force Base (AFB), Ogden, Utah are discussed. A phased exploration program was conducted at Hill AFB. Published geological, geochemical, and geophysical reports on the area were examined, regional exploration was conducted, and two thermal gradient holes were drilled. This program demonstrated that thermal waters are not present in the shallow subsurface at this site. (MHR)

Glenn, W.E.; Chapman, D.S.; Foley, D.; Capuano, R.M.; Cole, D.; Sibbett, B.; Ward, S.H.

1980-03-01T23:59:59.000Z

32

Summary and evaluation of hydraulic property data available for Eielson Air Force Base, Alaska  

SciTech Connect (OSTI)

Most of the contaminant source areas at Eielson Air Force Base are located above an unconfined alluvial aquifer with relatively high hydraulic conductivity. Hydraulic tests that have been conducted on wells at the base were evaluated, and in some cases reanalyzed, to determine hydraulic conductivity and specific yield for the aquifer. The reviewed tests included 2 multiple-well pumping tests and 30 slug tests. One slug test was conducted on a well in the bedrock aquifer at Site 38. All the other tests were conducted on the alluvial aquifer.

Spane, F.A. Jr.; Thorne, P.D.

1994-07-01T23:59:59.000Z

33

Fall 1994 wildlife and vegetation survey, Norton Air Force Base, California  

SciTech Connect (OSTI)

The fall 1994 wildlife and vegetation surveys were completed October 3-7, 1994, at Norton Air Force Base (AFB), California. Two biologists from CDM Federal Programs, the U.S. Environmental Protection Agency (EPA) regional biologist and the Oak Ridge National Laboratory (ORNL) lead biologist conducted the surveys. A habitat assessment of three Installation Restoration Project (IRP) sites at Norton Air Force Base was also completed during the fall survey period. The IRP sites include: Landfill No. 2 (Site 2); the Industrial Wastewater Treatment Plant (IWTP) area; and Former Fire Training Area No. 1 (Site 5). The assessments were designed to qualitatively characterize the sites of concern, identify potential ecological receptors, and provide information for Remedial Design/Remedial Action activities. A Reference Area (Santa Ana River Wash) and the base urban areas were also characterized. The reference area assessment was performed to provide a baseline for comparison with the IRP site habitats. The fall 1994 survey is the second of up to four surveys that may be completed. In order to develop a complete understanding of all plant and animal species using the base, these surveys were planned to be conducted over four seasons. Species composition can vary widely during the course of a year in Southern California, and therefore, seasonal surveys will provide the most complete and reliable data to address changes in habitat structure and wildlife use of the site. Subsequent surveys will focus on seasonal wildlife observations and a spring vegetation survey.

Not Available

1994-12-15T23:59:59.000Z

34

Robins Air Force Base Integrated Resource Assessment. Volume 2, Baseline Detail  

SciTech Connect (OSTI)

This report documents the assessment of baseline energy use at Robins Air Force Base (AFB), a US Air Force Materiel Command facility located near Macon, Georgia. This is a companion report to Volume 1, Executive Summary, and Volume 3, Integrated Resource Assessment. The US Air Force Materiel Command (AFMC) has tasked the US Department of Energy (DOE) Federal Energy Management Program (FEMP), supported by the Pacific Northwest Laboratory (PNL), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Robins AFB. This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This program (1) identifies and evaluates all cost-effective energy projects; (2) develops a schedule at each installation for project acquisition considering project type, size, timing, and capital requirements, as well as energy and dollar savings; and (3) targets 100% of the financing required to implement energy efficiency projects. PNL applied this model program to Robins AFB. The analysis examines the characteristics of electric, natural gas, oil, propane, and wood chip use for fiscal year 1991. The results include energy-use intensities for the facilities at Robins AFB by building type, fuel type, and energy end use. A complete energy consumption reconciliation is presented that accounts for the distribution of all major energy uses and losses among buildings, utilities, and central systems.

Keller, J.M.; Sullivan, G.P.; Wahlstrom, R.R.; Larson, L.L.

1993-08-01T23:59:59.000Z

35

Operable Unit 1 remedial investigation report, Eielson Air Force Base, Alaska  

SciTech Connect (OSTI)

This remedial investigation report for operable Unit 1 (OU-1) at Eielson Air Force Base presents data, calculations, and conclusions as to the nature and extent of surface and subsurface contamination at the eight source areas that make up OU-1. The information is based on the 1993 field investigation result and previous investigations. This report is the first in a set of three for OU-1. The other reports are the baseline risk assessment and feasibility study. The information in these reports will lead to a Record of Decision that will guide and conclude the environmental restoration effort for OU-1 at Eielson Air Force Base. The primary contaminants of concern include fuels and fuel-related contaminants (diesel; benzene, toluene, ethylbenzene, and xylene; total petroleum hydrocarbon; polycyclic aromatic hydrocarbons), maintenance-related solvents and cleaners (volatile chlorinated hydrocarbons such as trichloroothylene), polychlorinated biphenyls, and dichlorodiphenyltrichloroethane (DDT). The origins of contaminants of concern include leaks from storage tanks, drums and piping, and spills. Ongoing operations and past sitewide practices also contribute to contaminants of concern at OU-1 source areas. These include spraying mixed oil and solvent wastes on unpaved roads and aerial spraying of DDT.

Gilmore, T.J.; Fruland, R.M.; Liikala, T.L. [and others

1994-06-01T23:59:59.000Z

36

American Recovery and Reinvestment Act (ARRA) Federal Energy Management Program Technical Assistance Project 224 Altus Air Force Base Solar Technologies  

SciTech Connect (OSTI)

The principal goal of this project was to evaluate altus Air Force Base for building integrated silicon or thin film module photovoltaic opportunities. This report documents PNNL's efforts and documents study conclusions.

Russo, Bryan J.

2010-09-30T23:59:59.000Z

37

Direct determination of the local Hamaker constant of inorganic surfaces based on scanning force microscopy  

SciTech Connect (OSTI)

The energetics involved in the bonding fluctuations between nanometer-sized silicon dioxide (SiO{sub 2}) probes and highly oriented pyrolytic graphite (HOPG) and molybdenum disulfide (MoS{sub 2}) could be quantified directly and locally on the submicron scale via a time-temperature superposition analysis of the lateral forces between scanning force microscopy silicon dioxide probes and inorganic sample surfaces. The so-called intrinsic friction analysis (IFA) provided direct access to the Hamaker constants for HOPG and MoS{sub 2}, as well as the control sample, calcium fluoride (CaF{sub 2}). The use of scanning probe enables nanoscopic analysis of bonding fluctuations, thereby overcoming challenges associated with larger scale inhomogeneity and surface roughness common to conventional techniques used to determine surface free energies and dielectric properties. A complementary numerical analysis based on optical and electron energy loss spectroscopy and the Lifshitz quantum electrodynamic theory of van der Waals interactions is provided and confirms quantitatively the IFA results.

Krajina, Brad A.; Kocherlakota, Lakshmi S.; Overney, Ren M., E-mail: roverney@u.washington.edu [Department of Chemical Engineering, University of Washington, Seattle, Washington 98195-1750 (United States)

2014-10-28T23:59:59.000Z

38

Patrick Air Force Base integrated resource assessment. Volume 3, Resource assessment  

SciTech Connect (OSTI)

The US Air Force has tasked the Pacific Northwest Laboratory (PNL) in support of the US Department of Energy Federal Energy Management Program to identify, evaluate, and assist in acquiring all cost effective energy projects at Patrick Air Force Base (AFB). This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This report provides the results of the fossil fuel and electric energy resource opportunity (ERO) assessments performed by PNL at Patrick AFB which is located south of Cocoa Beach, Florida. It is a companion report to Volume 1, Executive Summary, and Volume.2, Baseline Detail. The results of the analyses of EROs are presented in 11 common energy end-use categories. A narrative description of each ERO is provided, including information on the installed cost, energy and dollar savings, impacts on operations and maintenance, and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. A description of the evaluation methodologies and technical and cost assumptions is also provided for each ERO. Summary tables present the cost-effectiveness of energy end-use equipment before and after the implementation of each ERO and present the results of the life-cycle cost analysis indicating the net present value and value index of each ERO.

Sandusky, W.F.; Parker, S.A.; King, D.A.; Wahlstrom, R.R.; Elliott, D.B.; Shankle, S.A.

1993-12-01T23:59:59.000Z

39

Robins Air Force Base integrated resource assessment. Volume 3, Resource assessment  

SciTech Connect (OSTI)

The US Air Force Materiel Command (AFMC) has tasked the US Department of Energy (DOE) Federal Energy Management Program (FEMP), supported by the Pacific Northwest Laboratory (PNL), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Robins Air Force Base (AFB). This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This report provides the results of the fossil fuel and electric energy resource opportunity (ERO) assessments performed by PNL at the AFMC Robins AFB facility located approximately 15 miles south of Macon, Georgia. It is a companion report to Volume 1, Executive Summary, and Volume 2, Baseline Detail. The results of the analyses of EROs are presented in 13 common energy end-use categories (e.g., boilers and furnaces, service hot water, and building lighting). A narrative-description of each ERO is provided, including information on the installed cost, energy and dollar savings; impacts on operation and maintenance (O&M); and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. A description of the evaluation methodologies and technical and cost assumptions is also provided for each ERO. Summary tables present the cost-effectiveness of energy end-use equipment before and after the implementation of each ERO and present the results of the life-cycle cost (LCC) analysis indicating the net present value (NPV) and savings to investment ratio (SIR) of each ERO.

Sullivan, G.P.; Keller, J.M.; Stucky, D.J.; Wahlstrom, R.R.; Larson, L.L.

1993-10-01T23:59:59.000Z

40

Vandenberg Air Force Base integrated resource assessment. Volume 3, Resource assessment  

SciTech Connect (OSTI)

The US Air Force Space Command (SPACECOM) has tasked the Pacific Northwest Laboratory (PNL), as the lead laboratory supporting the US Department of Energy (DOE) Federal Energy Management Program (FEMP), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Vandenberg Air Force Base (VAFB). This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This report provides the results of the fossil fuel and electric energy resource opportunity (ERO) assessments performed by PNL at the SPACECOM VAFB facility located approximately 50 miles northwest of Santa Barbara, California. It is a companion report to Volume 1, Executive Summary, and Volume 2, Baseline Detail. The results of the analysis of EROs are presented in ten common energy end-use categories (e.g., boilers and furnaces, service hot water, and building lighting). In addition, a case study of process loads at Space Launch Complex-4 (SLC-4) is included. A narrative description of each ERO is provided, including information on the installed cost, energy and dollar savings; impacts on operation and maintenance (O and M); and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. A description of the evaluation methodologies and technical and cost assumptions is also provided for each ERO. Summary tables present the cost-effectiveness of energy end-use equipment before and after the implementation of each ERO and present the results of the life-cycle cost (LCC) analysis indicating the net present value (NPV) and value index (VI) of each ERO. Finally, an appendix includes a summary of an economic analysis case study of the South Vandenberg Power Plant (SVPP) operating scenarios.

Daellenbach, K.K.; Dagle, J.E.; Dittmer, A.L.; Elliott, D.B.; Halverson, M.A.; Hickman, B.J.; Parker, G.B.; Richman, E.E.; Shankle, S.A.

1993-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Vandenberg Air Force Base integrated resource assessment. Volume 2, Baseline detail  

SciTech Connect (OSTI)

The US Air Force Space Command has tasked the Pacific Northwest Laboratory, as the lead laboratory supporting the US Department of Energy Federal Energy Management Program, to identify, evaluate, and assist in acquiring all cost-effective energy projects at Vandenberg Air Force Base (VAFB). This is a model program PNL is designing for federal customers served by the Pacific Gas and Electric Company (PG and E). The primary goal of the VAFB project is to identify all electric energy efficiency opportunities, and to negotiate with PG and E to acquire those resources through a customized demand-side management program for its federal clients. That customized program should have three major characteristics: (1) 100% up-front financing; (2) substantial utility cost-sharing; and (3) utility implementation through energy service companies under contract to the utility. A similar arrangement will be pursued with Southern California Gas for non-electric resource opportunities if that is deemed desirable by the site and if the gas utility seems open to such an approach. This report documents the assessment of baseline energy use at VAFB located near Lompoc, California. It is a companion report to Volume 1, Executive Summary, and Volume 3, Resource Assessment. This analysis examines the characteristics of electric, natural gas, fuel oil, and propane use for fiscal year 1991. It records energy-use intensities for the facilities at VAFB by building type and energy end use. It also breaks down building energy consumption by fuel type, energy end use, and building type. A more complete energy consumption reconciliation is presented that includes the accounting of all energy use among buildings, utilities, and applicable losses.

Halverson, M.A.; Richman, E.E.; Dagle, J.E.; Hickman, B.J.; Daellenbach, K.K.; Sullivan, G.P.

1993-06-01T23:59:59.000Z

42

E-Print Network 3.0 - atomic force microscopy-based Sample Search...  

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

electrochemical strain microscopy... -ion kinetics without changing the charging state of the battery. An atomic force microscopy tip in contact Source: Pint, Bruce A. -...

43

An atomic force microscopy-based method for line edge roughness measurement  

SciTech Connect (OSTI)

With the constant decrease of semiconductor device dimensions, line edge roughness (LER) becomes one of the most important sources of device variability and needs to be controlled below 2 nm for the future technological nodes of the semiconductor roadmap. LER control at the nanometer scale requires accurate measurements. We introduce a technique for LER measurement based upon the atomic force microscope (AFM). In this technique, the sample is tilted at about 45 Degree-Sign and feature sidewalls are scanned along their length with the AFM tip to obtain three-dimensional images. The small radius of curvature of the tip together with the low noise level of a laboratory AFM result in high resolution images. Half profiles and LER values on all the height of the sidewalls are extracted from the 3D images using a procedure that we developed. The influence of sample angle variations on the measurements is shown to be small. The technique is applied to the study of a full pattern transfer into a simplified gate stack. The images obtained are qualitatively consistent with cross-section scanning electron microscopy images and the average LER values agree with that obtained by critical dimension scanning electron microscopy. In addition to its high resolution, this technique presents several advantages such as the ability to image the foot of photoresist lines, complex multi-layer stacks regardless of the materials, and deep re-entrant profiles.

Fouchier, M.; Pargon, E.; Bardet, B. [CNRS/UJF-Grenoble1/CEA LTM, 17 avenue des Martyrs, 38054 Grenoble cedex 9 (France)

2013-03-14T23:59:59.000Z

44

Relationship between cloud radiative forcing, cloud fraction and cloud albedo, and new surface-based approach for determining cloud albedo  

SciTech Connect (OSTI)

This paper focuses on three interconnected topics: (1) quantitative relationship between surface shortwave cloud radiative forcing, cloud fraction, and cloud albedo; (2) surface-based approach for measuring cloud albedo; (3) multiscale (diurnal, annual and inter-annual) variations and covariations of surface shortwave cloud radiative forcing, cloud fraction, and cloud albedo. An analytical expression is first derived to quantify the relationship between cloud radiative forcing, cloud fraction, and cloud albedo. The analytical expression is then used to deduce a new approach for inferring cloud albedo from concurrent surface-based measurements of downwelling surface shortwave radiation and cloud fraction. High-resolution decade-long data on cloud albedos are obtained by use of this surface-based approach over the US Department of Energy's Atmospheric Radiaton Measurement (ARM) Program at the Great Southern Plains (SGP) site. The surface-based cloud albedos are further compared against those derived from the coincident GOES satellite measurements. The three long-term (1997-2009) sets of hourly data on shortwave cloud radiative forcing, cloud fraction and cloud albedo collected over the SGP site are analyzed to explore the multiscale (diurnal, annual and inter-annual) variations and covariations. The analytical formulation is useful for diagnosing deficiencies of cloud-radiation parameterizations in climate models.

Liu, Y.; Wu, W.; Jensen, M. P.; Toto, T.

2011-07-21T23:59:59.000Z

45

Computational Intelligence Based Data Fusion Algorithm for Dynamic sEMG and Skeletal Muscle Force Modelling  

SciTech Connect (OSTI)

In this work, an array of three surface Electrography (sEMG) sensors are used to acquired muscle extension and contraction signals for 18 healthy test subjects. The skeletal muscle force is estimated using the acquired sEMG signals and a Non-linear Wiener Hammerstein model, relating the two signals in a dynamic fashion. The model is obtained from using System Identification (SI) algorithm. The obtained force models for each sensor are fused using a proposed fuzzy logic concept with the intent to improve the force estimation accuracy and resilience to sensor failure or misalignment. For the fuzzy logic inference system, the sEMG entropy, the relative error, and the correlation of the force signals are considered for defining the membership functions. The proposed fusion algorithm yields an average of 92.49% correlation between the actual force and the overall estimated force output. In addition, the proposed fusionbased approach is implemented on a test platform. Experiments indicate an improvement in finger/hand force estimation.

Chandrasekhar Potluri,; Madhavi Anugolu; Marco P. Schoen; D. Subbaram Naidu

2013-08-01T23:59:59.000Z

46

PHYSICAL REVIEW A 83, 012517 (2011) Tunable polarity of the Casimir force based on saturated ferrites  

E-Print Network [OSTI]

ferrites Ran Zeng1 and Yaping Yang2,3 1 School of Telecommunication, Hangzhou Dianzi University, Hangzhou the saturated ferrite materials under the influence of an external magnetic field are taken into consideration. Between the ordinary dielectric slab and the ferrite slab, repulsive Casimir force may be observed

47

High-speed atomic force microscope based on an astigmatic detection system  

SciTech Connect (OSTI)

High-speed atomic force microscopy (HS-AFM) enables visualizing dynamic behaviors of biological molecules under physiological conditions at a temporal resolution of 1s or shorter. A small cantilever with a high resonance frequency is crucial in increasing the scan speed. However, detecting mechanical resonances of small cantilevers is technically challenging. In this study, we constructed an atomic force microscope using a digital versatile disc (DVD) pickup head to detect cantilever deflections. In addition, a flexure-guided scanner and a sinusoidal scan method were implemented. In this work, we imaged a grating sample in air by using a regular cantilever and a small cantilever with a resonance frequency of 5.5 MHz. Poor tracking was seen at the scan rate of 50 line/s when a cantilever for regular AFM imaging was used. Using a small cantilever at the scan rate of 100 line/s revealed no significant degradation in the topographic images. The results indicate that a smaller cantilever can achieve a higher scan rate and superior force sensitivity. This work shows the potential for using a DVD pickup head in future HS-AFM technology.

Liao, H.-S.; Chen, Y.-H.; Hwu, E.-T.; Chang, C.-S.; Hwang, I.-S., E-mail: ishwang@phys.sinica.edu.tw [Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan (China); Ding, R.-F.; Huang, H.-F.; Wang, W.-M. [Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan (China); Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan (China); Huang, K.-Y. [Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan (China)

2014-10-15T23:59:59.000Z

48

Climate forcing Climate forcing  

E-Print Network [OSTI]

parameters (solar distance factors) solar luminosity moon orbit volcanoes and other geothermal sources,000 years (large panels) and since 1750 (inset panels). Measurements are shown from ice cores (symbols forcings are shown on the right hand axes of the large panels. {Figure 6.4} !"#$#%&'(!&#)$&*$+#$,-.$/0

MacKinnon, Jennifer

49

An overview of the Noncyanide Metal Stripper program conducted at Kelly Air Force Base  

SciTech Connect (OSTI)

The Noncyanide Metal Stripper Program was a waste minimization effort aimed at identifying and testing suitable noncyanide stripping solutions that could replace the cyanide stripping solutions found in the United States Air Force (USAF) Air Logistics Centers (ALC). The program started with laboratory testing of commercial stripping solutions. The performance of these solutions was compared with the cyanide process solutions C-101 and C-106 targeted for replacement. Plate metal stripping rate, basis metal corrosion, and compatibility with masking materials and biodegradability were all used to determine the performance of each product. Those products that passed the acceptance criteria were field tested using 25 to 50-gallon solutions to determine optimum operating conditions, stripper maintenance requirements, and maximum solution loading and longevity. The program included investigating any adverse effects these new products might have on existing chemical and biological waste treatment processes. All cyanide stripping solutions at the San Antonio Air Logistics Command Center have been successfully replaced with commercial noncyanide products. Generally, these replacements were less toxic and generated less waste and had longer lifetimes than their cyanide counterparts.

Argyle, M.D.; Cowan, R.L.

1995-01-01T23:59:59.000Z

50

Home-based work, human capital accumulation and women's labor force participation  

E-Print Network [OSTI]

????????????????????????... 78 2 Proportion of Home-Based Workers, by Year and Occupation?????. 79 3 Socioeconomic Characteristics of Women Aged 25 to 54, by Work Status and Work Site????????????????????????. 80 4 Logit Coefficients from Edwards and Field... to wage and salary workers and divides workers by sex, age, and education. He concludes that, overtime, wage penalties on home-based work have become smaller relative to on-site work. The increase in the employment shares and relative wages of home...

Chutubtim, Piyaluk

2006-10-30T23:59:59.000Z

51

Equilibrium polymerization in sulphur: Monte Carlo simulations with a density functional based force field  

E-Print Network [OSTI]

Equilibrium polymerization in sulphur: Monte Carlo simulations with a density functional based Messina, I-98166 Messina, Italy The equilibrium polymerization of sulphur is investigated by a combination leading to polymerization, and the results for the cohesive energy, structural and vibrational properties

52

A pressure gauge based on gas density measurement from analysis of the thermal noise of an atomic force microscope cantilever  

SciTech Connect (OSTI)

We describe a gas-density gauge based on the analysis of the thermally-driven fluctuations of an atomic force microscope (AFM) cantilever. The fluctuations are modeled as a ring-down of a simple harmonic oscillator, which allows fitting of the resonance frequency and damping of the cantilever, which in turn yields the gas density. The pressure is obtained from the density using the known equation of state. In the range 10-220 kPa, the pressure readings from the cantilever gauge deviate by an average of only about 5% from pressure readings on a commercial gauge. The theoretical description we use to determine the pressure from the cantilever motion is based upon the continuum hypothesis, which sets a minimum pressure for our analysis. It is anticipated that the cantilever gauge could be extended to measure lower pressures given a molecular theoretical description. Alternatively, the gauge could be calibrated for use in the non-continuum range. Our measurement technique is similar to previous AFM cantilever measurements, but the analysis produces improved accuracy.

Seo, Dongjin; Ducker, William A. [Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States); Paul, Mark R. [Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States)

2012-05-15T23:59:59.000Z

53

Nuclear forces  

SciTech Connect (OSTI)

These lectures present an introduction into the theory of nuclear forces. We focus mainly on the modern approach, in which the forces between nucleons emerge from low-energy QCD via chiral effective field theory.

Machleidt, R. [Department of Physics, University of Idaho, Moscow, Idaho 83844 (United States)

2013-06-10T23:59:59.000Z

54

Selection of higher eigenmode amplitude based on dissipated power and virial contrast in bimodal atomic force microscopy  

SciTech Connect (OSTI)

This paper explores the effect of the amplitude ratio of the higher to the fundamental eigenmode in bimodal atomic force microscopy (AFM) on the phase contrast and the dissipated power contrast of the higher eigenmode. We explore the optimization of the amplitude ratio in order to maximize the type of contrast that is most relevant to the particular study. Specifically, we show that the trends in the contrast range behave differently for different quantities, especially the dissipated power and the phase, with the former being more meaningful than the latter (a similar analysis can be carried out using the virial, for which we also provide a brief example). Our work is based on numerical simulations using two different conservative-dissipative tip-sample models, including the standard linear solid and the combination of a dissipation coefficient with a conservative model, as well as experimental images of thin film Nafion{sup } proton exchange polymers. We focus on the original bimodal AFM method, where the higher eigenmode is driven with constant amplitude and frequency (i.e., in open loop).

Diaz, Alfredo J.; Eslami, Babak; Lpez-Guerra, Enrique A.; Solares, Santiago D., E-mail: ssolares@gwu.edu [Department of Mechanical Engineering, University of Maryland, College Park, Maryland 20742 (United States)

2014-09-14T23:59:59.000Z

55

Radiation control coatings installed on federal buildings at Tyndall Air Force Base. Volume 2: Long-term monitoring and modeling  

SciTech Connect (OSTI)

The US Department of Energy`s (DOE`s) Federal Energy Management Program (FEMP) supports efforts to reduce energy use and associated expenses in the federal sector. One such effort, the New Technology Demonstration Program (NTDP), seeks to evaluate new energy-saving US technologies and secure their more timely adoption by the US government. Through a partnership with a federal site, the utility serving the site, a manufacturer of an energy-related technology, and other organizations associated with these interests, DOE can evaluate a new technology. The results of the program give federal agency decision makers more hands-on information with which to validate a decision to utilize a new technology in their facilities. This is the second volume of a two-volume report that describes the effects of radiation control coatings installed on federal buildings at Tyndall Air Force Base (AFB) in Florida by ThermShield International. ORNL`s Buildings Technology Center (BTC) was assigned the responsibility for gathering, analyzing, and reporting on the data to describe the effects of the coatings. The first volume described the monitoring plan and its implementation, the results of pre-coating monitoring, the coating installation, results from fresh coatings compared to pre-coating results, and a plan to decommission the monitoring equipment. This second volume updates and completes the presentation of data to compare performance of fresh coatings with weathered coatings.

Petrie, T.W.; Childs, P.W.

1998-06-01T23:59:59.000Z

56

1098 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 20, NO. 5, OCTOBER 2011 Impedance-Based Force Transduction Within  

E-Print Network [OSTI]

(0.01­1 mN), and are geared toward general surgical gripping and grasping requiring force sensitivity, and the requisite packaging can often prohibit practical implementation [26]. Furthermore, protective elastic coat

Meng, Ellis

57

Control of focusing forces and emittances in plasma-based accelerators using near-hollow plasma channels  

SciTech Connect (OSTI)

A near-hollow plasma channel, where the plasma density in the channel is much less than the plasma density in the walls, is proposed to provide independent control over the focusing and accelerating forces in a plasma accelerator. In this geometry the low density in the channel contributes to the focusing forces, while the accelerating fields are determined by the high density in the channel walls. The channel also provides guiding for intense laser pulses used for wakefield excitation. Both electron and positron beams can be accelerated in a nearly symmetric fashion. Near-hollow plasma channels can effectively mitigate emittance growth due to Coulomb scattering for high energy physics applications.

Schroeder, Carl; Esarey, Eric; Benedetti, Carlo; Leemans, Wim

2013-08-06T23:59:59.000Z

58

Control of focusing forces and emittances in plasma-based accelerators using near-hollow plasma channels  

SciTech Connect (OSTI)

A near-hollow plasma channel, where the plasma density in the channel is much less than the plasma density in the walls, is proposed to provide independent control over the focusing and accelerating forces in a plasma accelerator. In this geometry the low density in the channel contributes to the focusing forces, while the accelerating fields are determined by the high density in the channel walls. The channel also provides guiding for intense laser pulses used for wakefield excitation. Both electron and positron beams can be accelerated in a nearly symmetric fashion. Near-hollow plasma channels can effectively mitigate emittance growth due to Coulomb scattering for high-energy physics applications.

Schroeder, C. B.; Esarey, E.; Benedetti, C.; Leemans, W. P. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)] [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2013-08-15T23:59:59.000Z

59

Protective Force  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes requirements for management and operation of the DOE Protective Force (PF), establishes requirements for firearms operations and defines the firearms courses of fire. Cancels: DOE M 473.2-1A DOE M 473.2-2

2005-08-26T23:59:59.000Z

60

Protective Force  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The manual establishes requirements for management and operation of the DOE Protective Force, establishes requirements for firearms operations and defines the firearms courses of fire. Chg 1 dated 3/7/06. DOE M 470.4-3A cancels DOE M 470.4-3, Chg 1, Protective Force, dated 3-7-06, Attachment 2, Contractor Requirement Document (CRD) only (except for Section C). Chg 1, dated 3-7-06, cancels DOE M 470.4-3

2006-03-07T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Analysis of global radiation budgets and cloud forcing using three-dimensional cloud nephanalysis data base. Master's thesis  

SciTech Connect (OSTI)

A one-dimensional radiative transfer model was used to compute the global radiative budget at the top of the atmosphere (TOA) and the surface for January and July. 1979. The model was also used to determine the global cloud radiative forcing for all clouds and for high and low cloud layers. In the computations. the authors used the monthly cloud data derived from the Air Force Three-Dimensional Cloud Nephanalysis (3DNEPH). These data were used in conjunction with conventional temperature and humidity profiles analyzed during the 1979 First GARP (Global Atmospheric Research Program) Global Experiment (FGGE) year. Global surface albedos were computed from available data and were included in the radiative transfer analysis. Comparisons of the model-produced outgoing solar and infrared fluxes with those derived from Nimbus 7 Earth Radiation Budget (ERS) data were made to validate the radiative model and cloud cover. For reflected solar and emitted infrared (IR) flux, differences within 20 w/sq m meters were shown.

Mitchell, B.

1990-12-01T23:59:59.000Z

62

An inverse analytical technique applied to solute-transport observations at Otis Air Force Base, Cape Cod, Massachusetts  

E-Print Network [OSTI]

area at Otis AFB was developed by Konikow and Bredehoeft in 1978. This model is based on a rectangular, block-centered, finite-difference grid and simulates both flow and solute transport in a two- dimensional aquifer. The modeled area with its...). . . . . . . . . . . . . . 12 Finite-difference grid used to model the study area by the USGS (after Thurman et al. , 1984). 14 Idealization of the dispersion process showing (a) plug flow; (b) longitudinal dispersion; (c) transverse dispersion; and (d) longitudinal...

Ala, Natalyn Kraemer

1990-01-01T23:59:59.000Z

63

Environmental assessment of the Environmental Restoration Project at Sandia National Laboratories/New Mexico  

SciTech Connect (OSTI)

Sandia National Laboratories/New Mexico (SNL/NM) is managed and operated for the U.S. Department of Energy (DOE) by Sandia Corporation, a subsidiary of the Lockheed Martin Company. SNL/NM is located on land controlled by DOE within the boundaries of Kirtland Air Force Base (KAFB) in Albuquerque, New Mexico. The major responsibilities of SNL/NM are the support of national security and energy projects. This report provides an environmental assessment of proposed remedial action activities at the solid waste management units at SNL/NM. A risk assessment of health hazards is also discussed.

NONE

1996-03-01T23:59:59.000Z

64

Hydrologic transport of depleted uranium associated with open air dynamic range testing at Los Alamos National Laboratory, New Mexico, and Eglin Air Force Base, Florida  

SciTech Connect (OSTI)

Hydrologic investigations on depleted uranium fate and transport associated with dynamic testing activities were instituted in the 1980`s at Los Alamos National Laboratory and Eglin Air Force Base. At Los Alamos, extensive field watershed investigations of soil, sediment, and especially runoff water were conducted. Eglin conducted field investigations and runoff studies similar to those at Los Alamos at former and active test ranges. Laboratory experiments complemented the field investigations at both installations. Mass balance calculations were performed to quantify the mass of expended uranium which had transported away from firing sites. At Los Alamos, it is estimated that more than 90 percent of the uranium still remains in close proximity to firing sites, which has been corroborated by independent calculations. At Eglin, we estimate that 90 to 95 percent of the uranium remains at test ranges. These data demonstrate that uranium moves slowly via surface water, in both semi-arid (Los Alamos) and humid (Eglin) environments.

Becker, N.M. [Los Alamos National Lab., NM (United States); Vanta, E.B. [Wright Laboratory Armament Directorate, Eglin Air Force Base, FL (United States)

1995-05-01T23:59:59.000Z

65

Air Force Research Laboratory Placement: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson  

E-Print Network [OSTI]

Air Force Research Laboratory Placement: Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton OH Discipline(s): Materials science/engineering, chemical. Description: We are looking for a qualified candidate to join our team at the Air Force Research Laboratory

Alpay, S. Pamir

66

Combined Atomic Force Microscope-Based Topographical Imaging and Nanometer Scale Resolved Proximal Probe Thermal Desorption/Electrospray Ionization-Mass Spectrometry  

SciTech Connect (OSTI)

Nanometer scale proximal probe thermal desorption/electrospray ionization mass spectrometry (TD/ESI-MS) was demonstrated for molecular surface sampling of caffeine from a thin film using a 30 nm diameter nano-thermal analysis (nano-TA) probe tip in an atomic force microscope (AFM) coupled via a vapor transfer line and ESI interface to a MS detection platform. Using a probe temperature of 350 C and a spot sampling time of 30 s, conical desorption craters 250 nm in diameter and 100 nm deep were created as shown through subsequent topographical imaging of the surface within the same system. Automated sampling of a 5 x 2 array of spots, with 2 m spacing between spots, and real time selective detection of the desorbed caffeine using tandem mass spectrometry was also demonstrated. Estimated from the crater volume (~2x106 nm3), only about 10 amol (2 fg) of caffeine was liberated from each thermal desorption crater in the thin film. These results illustrate a relatively simple experimental setup and means to acquire in automated fashion sub-micrometer scale spatial sampling resolution and mass spectral detection of materials amenable to TD. The ability to achieve MS-based chemical imaging with 250 nm scale spatial resolution with this system is anticipated.

Ovchinnikova, Olga S [ORNL; Nikiforov, Maxim [ORNL; Bradshaw, James A [ORNL; Jesse, Stephen [ORNL; Van Berkel, Gary J [ORNL

2011-01-01T23:59:59.000Z

67

Radiation control coatings installed on federal buildings at Tyndall Air Force Base. Volume 1: Pre-coating monitoring and fresh coating results  

SciTech Connect (OSTI)

The US Department of Energy`s (DOE`s) Federal Energy Management Program (FEMP) supports efforts to reduce energy use and associated expenses in the federal sector. One such effort, the New Technology Demonstration Program (NTDP), seeks to evaluate new energy-saving US technologies and secure their more timely adoption by the US government. Through a partnership with a federal site, the utility serving the site, a manufacturer of an energy-related technology, and other organizations associated with these interests, DOE can evaluate a new technology. The results of the program give federal agency decision makers more hands-on information with which to validate a decision to utilize a new technology in their facilities. The partnership of these interests is secured through a cooperative research and development agreement (CRADA), in this case between Lockheed Martin Energy Research Corporation, the manager of the Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee, and ThermShield International, Ltd., the manufacturer of the technology. This is the first volume of a two-volume report that describes the effects of radiation control coatings installed on federal buildings at Tyndall Air Force Base (AFB) in Florida by ThermShield International. ORNL`s Buildings Technology Center (BTC) was assigned the responsibility for gathering, analyzing, and reporting on the data to describe the effects of the coatings. This volume describes the monitoring plan and its implementation, the results of pre-coating monitoring, the coating installation, results from fresh coatings compared to pre-coating results, and a plan to decommission the monitoring equipment. By including results from roofs at Tyndall AFB and from an outdoor test facility at the BTC, the data cover the range from poorly insulated to well-insulated roofs and two kinds of radiation control coatings on various roof membranes.

Petrie, T.W.; Childs, P.W.

1997-02-01T23:59:59.000Z

68

Calibration of lateral force measurements in atomic force microscopy with a piezoresistive force sensor  

SciTech Connect (OSTI)

We present here a method to calibrate the lateral force in the atomic force microscope. This method makes use of an accurately calibrated force sensor composed of a tipless piezoresistive cantilever and corresponding signal amplifying and processing electronics. Two ways of force loading with different loading points were compared by scanning the top and side edges of the piezoresistive cantilever. Conversion factors between the lateral force and photodiode signal using three types of atomic force microscope cantilevers with rectangular geometries (normal spring constants from 0.092 to 1.24 N/m and lateral stiffness from 10.34 to 101.06 N/m) were measured in experiments using the proposed method. When used properly, this method calibrates the conversion factors that are accurate to {+-}12.4% or better. This standard has less error than the commonly used method based on the cantilever's beam mechanics. Methods such of this allow accurate and direct conversion between lateral forces and photodiode signals without any knowledge of the cantilevers and the laser measuring system.

Xie Hui; Vitard, Julien; Haliyo, Sinan; Regnier, Stephane [Institut des Systemes Intelligents et Robotique (ISIR), Universite Pierre et Marie Curie-Paris 6/CNRS, 18 Route du Panorama-BP 61, 92265 Fontenay-Aux-Roses (France); Boukallel, Mehdi [Laboratoire de Robotique et Mesorobotique (LRM), CEA, 18 Route du Panorama-BP 61, 92265 Fontenay-Aux-Roses (France)

2008-03-15T23:59:59.000Z

69

Micromechanism linear actuator with capillary force sealing  

DOE Patents [OSTI]

A class of micromachine linear actuators whose function is based on gas driven pistons in which capillary forces are used to seal the gas behind the piston. The capillary forces also increase the amount of force transmitted from the gas pressure to the piston. In a major subclass of such devices, the gas bubble is produced by thermal vaporization of a working fluid. Because of their dependence on capillary forces for sealing, such devices are only practical on the sub-mm size scale, but in that regime they produce very large force times distance (total work) values.

Sniegowski, Jeffry J. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

70

E-Print Network 3.0 - anti-eu forces mobilizing Sample Search...  

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

Rendering of Environmental Force Feedback in Mobile Robot Teleoperation based on Fuzzy Logic Summary: Rendering of Environmental Force Feedback in Mobile Robot Teleoperation based...

71

Protective Force Program Manual  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Provides detailed requirements to supplement DOE O 473.2, Protective Force Program, which establishes the requirements and responsibilities for management and operation of the Department of Energy (DOE) Protective Force (PF) Program. Does not cancel other directives.

2000-06-30T23:59:59.000Z

72

Magnus force effect in optical manipulation  

SciTech Connect (OSTI)

The effect of the Magnus force in optical micromanipulation has been observed. An ad hoc experiment has been designed based on a one-dimensional optical trap that carries angular momentum. The observed particle dynamics reveals the occurrence of this hydrodynamic force, which is neglected in the common approach. Its measured value is larger than the one predicted by the existing theoretical models for micrometric particles and low Reynolds number, showing that the Magnus force can contribute to unconventional optohydrodynamic trapping and manipulation.

Cipparrone, Gabriella; Pagliusi, Pasquale [Dipartimento di Fisica and Centro di Eccellenza CEMIF.CAL, University of Calabria, Ponte P. Bucci, Cubo 33B, I-87036 Rende (Italy); Istituto per i Processi Chimici e Fisici, Consiglio Nazionale delle Ricerche, Ponte P. Bucci, Cubo 33B, I-87036 Rende (Italy); Hernandez, Raul Josue; Provenzano, Clementina [Dipartimento di Fisica and Centro di Eccellenza CEMIF.CAL, University of Calabria, Ponte P. Bucci, Cubo 33B, I-87036 Rende (Italy)

2011-07-15T23:59:59.000Z

73

In vivo recording of aerodynamic force with an aerodynamic force platform  

E-Print Network [OSTI]

Flapping wings enable flying animals and biomimetic robots to generate elevated aerodynamic forces. Measurements that demonstrate this capability are based on tethered experiments with robots and animals, and indirect force calculations based on measured kinematics or airflow during free flight. Remarkably, there exists no method to measure these forces directly during free flight. Such in vivo recordings in freely behaving animals are essential to better understand the precise aerodynamic function of their flapping wings, in particular during the downstroke versus upstroke. Here we demonstrate a new aerodynamic force platform (AFP) for nonintrusive aerodynamic force measurement in freely flying animals and robots. The platform encloses the animal or object that generates fluid force with a physical control surface, which mechanically integrates the net aerodynamic force that is transferred to the earth. Using a straightforward analytical solution of the Navier-Stokes equation, we verified that the method is ...

Lentink, David; Ingersoll, Rivers

2014-01-01T23:59:59.000Z

74

Reduction of the Casimir force using aerogels  

E-Print Network [OSTI]

By using silicon oxide based aerogels we show numerically that the Casimir force can be reduced several orders of magnitude, making its effect negligible in nanodevices. This decrease in the Casimir force is also present even when the aerogels are deposited on metallic substrates. To calculate the Casimir force we model the dielectric function of silicon oxide aerogels using an effective medium dielectric function such as the Clausius-Mossotti approximation. The results show that both the porosity of the aerogel and its thickness can be use as control parameters to reduce the magnitude of the Casimir force.

Esquivel-Sirvent, R

2007-01-01T23:59:59.000Z

75

Reduction of the Casimir force using aerogels  

E-Print Network [OSTI]

By using silicon oxide based aerogels we show numerically that the Casimir force can be reduced several orders of magnitude, making its effect negligible in nanodevices. This decrease in the Casimir force is also present even when the aerogels are deposited on metallic substrates. To calculate the Casimir force we model the dielectric function of silicon oxide aerogels using an effective medium dielectric function such as the Clausius-Mossotti approximation. The results show that both the porosity of the aerogel and its thickness can be use as control parameters to reduce the magnitude of the Casimir force.

R. Esquivel-Sirvent

2007-08-02T23:59:59.000Z

76

Development of a body force description for compressor stability assessment  

E-Print Network [OSTI]

This thesis presents a methodology for a body force description of a compressor with particular application to compressor stability calculations. The methodology is based on extracting blade forces from an axisymmetric ...

Kiwada, George (George Ford)

2008-01-01T23:59:59.000Z

77

Unbalanced electromagnetic forces  

E-Print Network [OSTI]

) . I :, jazdz g (Member) (Member) August 1974 -" ~ 5:. -. 62 ABSTRACT Unbalanced Electromagnetic Forces (August 1974) Craig Martin Hansen, B. S. , Texas A&M University Directed by: Dr. Attilio J. Giaroia Electromagnetic forces from moving... be deduced from the history of the development of an under- standing of electromagnetic forces. This is a relatively short history (starting in the late 1800's) filled with misunderstandings and pre]udices. This history can be divided into two eras: non...

Hansen, Craig Martin

2012-06-07T23:59:59.000Z

78

Optical Force Measurements In Concentrated Colloidal Suspensions  

E-Print Network [OSTI]

This work concerns the construction and testing of an optical tweezers-based force transducer, and its application to a hard-sphere colloidal system. A particle in an optical trap forward-scatters a fraction of the ...

Wilson, Laurence

2007-01-01T23:59:59.000Z

79

NUCLEAR PROXIMITY FORCES  

E-Print Network [OSTI]

One might summarize of nuclear potential energy has beendegree of freedom) for the nuclear interaction between anyUniversity of California. Nuclear Proximity Forces 'I< at

Randrup, J.

2011-01-01T23:59:59.000Z

80

Protective Force Program Manual  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Provides detailed requirements to supplement DOE O 473.2, PROTECTIVE FORCE PROGRAM, which establishes the requirements and responsibilities for management and operation of the Department of Energy (DOE) Protective Force (PF) Program. Change 1 revised pages in Chapters IV and VI on 12/20/2001.

2001-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

OOTW Force Design Tools  

SciTech Connect (OSTI)

This report documents refined requirements for tools to aid the process of force design in Operations Other Than War (OOTWs). It recommends actions for the creation of one tool and work on other tools relating to mission planning. It also identifies the governmental agencies and commands with interests in each tool, from whom should come the user advisory groups overseeing the respective tool development activities. The understanding of OOTWs and their analytical support requirements has matured to the point where action can be taken in three areas: force design, collaborative analysis, and impact analysis. While the nature of the action and the length of time before complete results can be expected depends on the area, in each case the action should begin immediately. Force design for OOTWs is not a technically difficult process. Like force design for combat operations, it is a process of matching the capabilities of forces against the specified and implied tasks of the operation, considering the constraints of logistics, transport and force availabilities. However, there is a critical difference that restricts the usefulness of combat force design tools for OOTWs: the combat tools are built to infer non-combat capability requirements from combat capability requirements and cannot reverse the direction of the inference, as is required for OOTWs. Recently, OOTWs have played a larger role in force assessment, system effectiveness and tradeoff analysis, and concept and doctrine development and analysis. In the first Quadrennial Defense Review (QDR), each of the Services created its own OOTW force design tool. Unfortunately, the tools address different parts of the problem and do not coordinate the use of competing capabilities. These tools satisfied the immediate requirements of the QDR, but do not provide a long-term cost-effective solution.

Bell, R.E.; Hartley, D.S.III; Packard, S.L.

1999-05-01T23:59:59.000Z

82

Aerodynamic Force Modeling for Unsteady Wing Ryan Jantzen  

E-Print Network [OSTI]

Aerodynamic Force Modeling for Unsteady Wing Maneuvers Ryan Jantzen and Kunihiko Taira Florida, Wright-Patterson Air Force Base, OH We report on the development of an aerodynamic force model for a flat focus is placed on examining the influence of large-amplitude wing motion on the unsteady aerodynamics

83

Design and characterization of a low cost dual differential proving ring force sensor utilizing Hall-effect sensors  

E-Print Network [OSTI]

A novel dual differential hall-effect based proving ring force sensor has been designed, manufactured, and tested. Strain gauge based force sensors are among the most common methods of measuring static and dynamic forces, ...

Rivest, Christopher W. (Christopher Warren)

2006-01-01T23:59:59.000Z

84

An improved proximity force approximation for electrostatics  

SciTech Connect (OSTI)

A quite straightforward approximation for the electrostatic interaction between two perfectly conducting surfaces suggests itself when the distance between them is much smaller than the characteristic lengths associated with their shapes. Indeed, in the so called 'proximity force approximation' the electrostatic force is evaluated by first dividing each surface into a set of small flat patches, and then adding up the forces due two opposite pairs, the contributions of which are approximated as due to pairs of parallel planes. This approximation has been widely and successfully applied in different contexts, ranging from nuclear physics to Casimir effect calculations. We present here an improvement on this approximation, based on a derivative expansion for the electrostatic energy contained between the surfaces. The results obtained could be useful for discussing the geometric dependence of the electrostatic force, and also as a convenient benchmark for numerical analyses of the tip-sample electrostatic interaction in atomic force microscopes. - Highlights: Black-Right-Pointing-Pointer The proximity force approximation (PFA) has been widely used in different areas. Black-Right-Pointing-Pointer The PFA can be improved using a derivative expansion in the shape of the surfaces. Black-Right-Pointing-Pointer We use the improved PFA to compute electrostatic forces between conductors. Black-Right-Pointing-Pointer The results can be used as an analytic benchmark for numerical calculations in AFM. Black-Right-Pointing-Pointer Insight is provided for people who use the PFA to compute nuclear and Casimir forces.

Fosco, Cesar D. [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina) [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina); Instituto Balseiro, Universidad Nacional de Cuyo, R8402AGP Bariloche (Argentina); Lombardo, Fernando C. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina) [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); IFIBA (Argentina)] [Argentina; Mazzitelli, Francisco D., E-mail: fdmazzi@cab.cnea.gov.ar [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina); Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina)

2012-08-15T23:59:59.000Z

85

Protective Force Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To prescribe Department of Energy policy, responsibilities, and requirements for the management and operation of the Protective Force Program. Chg 1 dated 2-13-95. Cancels DOE O 5632.7 and DOE O 5632.8.

1995-02-13T23:59:59.000Z

86

ATLAS Metadata Task Force  

E-Print Network [OSTI]

ATLAS Metadata Task Force D. Costanzo, J. Cranshaw, S.provided and approved by the ATLAS TDAQ and DCS Connectinformation, go to http://atlas-connect-forum.web.cern.ch/

Costanzo, D.; ATLAS Collaboration

2009-01-01T23:59:59.000Z

87

Federal Protective Force  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Manual establishes requirements for the management and operation of the Department of Energy (DOE) Federal protective forces (FPFs). Cancels DOE M 470.4-3, Chg 1. Canceled by DOE O 473.3.

2009-07-15T23:59:59.000Z

88

Constraint and Restoring Force  

E-Print Network [OSTI]

Long-lived sensor network applications must be able to self-repair and adapt to changing demands. We introduce a new approach for doing so: Constraint and Restoring Force. CRF is a physics-inspired framework for computing ...

Beal, Jacob

2007-08-24T23:59:59.000Z

89

Weak nuclear forces cause the strong nuclear force  

E-Print Network [OSTI]

We determine the strength of the weak nuclear force which holds the lattices of the elementary particles together. We also determine the strength of the strong nuclear force which emanates from the sides of the nuclear lattices. The strong force is the sum of the unsaturated weak forces at the surface of the nuclear lattices. The strong force is then about ten to the power of 6 times stronger than the weak force between two lattice points.

E. L. Koschmieder

2007-12-11T23:59:59.000Z

90

Measuring the structure of thin soft matter films under confinement: A surface-force type apparatus for neutron reflection, based on a flexible membrane approach  

SciTech Connect (OSTI)

A unique surface force type apparatus that allows the investigation of a confined thin film using neutron reflection is described. The central feature of the setup consists of a solid substrate (silicon) and a flexible polymer membrane (Melinex{sup Registered-Sign }). We show that inflation of the membrane against the solid surface provides close and even contact between the interfaces over a large surface area. Both heavy water and air can be completely squeezed out from between the flexible film and the solid substrate, leaving them in molecular contact. The strength of confinement is controlled by the pressure used to inflate the membrane. Dust provides a small problem for this approach as it can get trapped between membrane and substrate to prevent a small part of the membrane from making good contact with the substrate. This results in the measured neutron reflectivity containing a small component of an unwanted reflection, between 10% and 20% at low confining pressures (1 bar) and between 1% and 5% at high confining pressures (5 bar). However, we show that this extra signal does not prevent good and clear information on the structure of thin films being extracted from the neutron reflectivity. The effects of confinement are illustrated with data from a poly(vinyl pyrollidone) gel layer in water, a polyelectrolyte multilayer in water, and with data from a stack of supported lipid-bilayers swollen with D{sub 2}O vapor. The data demonstrates the potential of this apparatus to provide information on the structure of thin films under confinement for a known confining pressure.

Vos, Wiebe M. de [School of Chemistry, University of Bristol, Cantock's close, BS8 1TS Bristol (United Kingdom); School of Physics, University of Bristol, Tyndall Avenue, BS8 1TL Bristol (United Kingdom); Mears, Laura L. E.; Richardson, Robert M. [School of Physics, University of Bristol, Tyndall Avenue, BS8 1TL Bristol (United Kingdom); Cosgrove, Terence; Prescott, Stuart W. [School of Chemistry, University of Bristol, Cantock's close, BS8 1TS Bristol (United Kingdom); Dalgliesh, Robert M. [ISIS Neutron Source, STFC Rutherford Appleton Laboratory, OX11 0QX Didcot (United Kingdom)

2012-11-15T23:59:59.000Z

91

In Search of the Inverted Region: Chromophore-Based Driving Force Dependence of Interfacial Electron Transfer Reactivity at the Nanocrystalline Titanium Dioxide  

E-Print Network [OSTI]

. Introduction Dye sensitization of wide band gap semiconductor electrodes in photoelectrochemical cells can lead chromophores to function effectively as sensitizers in TiO2- based photoelectrochemical cells. The findings to significant portions of the visible spectrum.1-3 Dye sensitization also provides a scheme for inititiating

92

Direct Aerosol Forcing Uncertainty  

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

Understanding sources of uncertainty in aerosol direct radiative forcing (DRF), the difference in a given radiative flux component with and without aerosol, is essential to quantifying changes in Earth's radiation budget. We examine the uncertainty in DRF due to measurement uncertainty in the quantities on which it depends: aerosol optical depth, single scattering albedo, asymmetry parameter, solar geometry, and surface albedo. Direct radiative forcing at the top of the atmosphere and at the surface as well as sensitivities, the changes in DRF in response to unit changes in individual aerosol or surface properties, are calculated at three locations representing distinct aerosol types and radiative environments. The uncertainty in DRF associated with a given property is computed as the product of the sensitivity and typical measurement uncertainty in the respective aerosol or surface property. Sensitivity and uncertainty values permit estimation of total uncertainty in calculated DRF and identification of properties that most limit accuracy in estimating forcing. Total uncertainties in modeled local diurnally averaged forcing range from 0.2 to 1.3 W m-2 (42 to 20%) depending on location (from tropical to polar sites), solar zenith angle, surface reflectance, aerosol type, and aerosol optical depth. The largest contributor to total uncertainty in DRF is usually single scattering albedo; however decreasing measurement uncertainties for any property would increase accuracy in DRF. Comparison of two radiative transfer models suggests the contribution of modeling error is small compared to the total uncertainty although comparable to uncertainty arising from some individual properties.

Mccomiskey, Allison

93

Work Force Discipline  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order provides guidance and procedures and states responsibilities for maintaining work force discipline in DOE. Chg 1, dated 3-11-85; Chg 2, dated 1-6-86; Chg 3, dated 3-21-89; Chg 4, dated 8-2-90; Chg 5, dated 3-9-92; Chg 6, dated 8-21-92, cancels Chg 5.

1983-03-23T23:59:59.000Z

94

Protective Force Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes policy, requirements, responsibilities, and authorities, for the management and operation of the Department of Energy (DOE) Protective Force (PF) Program. Extended until 7-7-06 by DOE N 251.64, dated 7-7-05 Cancels: DOE 5632.7A

2000-06-30T23:59:59.000Z

95

Contractor Protective Force  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Manual establishes requirements for the management and operation of the U.S. Department of Energy contractor protective forces. Cancels: DOE M 470.4-3 Chg 1, CRD (Attachment 2) only, except for Section C. Canceled by DOE O 473.3.

2008-11-05T23:59:59.000Z

96

Force Modulator System  

SciTech Connect (OSTI)

Many metal parts manufacturers use large metal presses to shape sheet metal into finished products like car body parts, jet wing and fuselage surfaces, etc. These metal presses take sheet metal and - with enormous force - reshape the metal into a fully formed part in a manner of seconds. Although highly efficient, the forces involved in forming metal parts also damage the press itself, limit the metals used in part production, slow press operations and, when not properly controlled, cause the manufacture of large volumes of defective metal parts. To date, the metal-forming industry has not been able to develop a metal-holding technology that allows full control of press forces during the part forming process. This is of particular importance in the automotive lightweighting efforts under way in the US automotive manufacturing marketplace. Metalforming Controls Technology Inc. (MC2) has developed a patented press control system called the Force Modulator that has the ability to control these press forces, allowing a breakthrough in stamping process control. The technology includes a series of hydraulic cylinders that provide controlled tonnage at all points in the forming process. At the same time, the unique cylinder design allows for the generation of very high levels of clamping forces (very high tonnages) in very small spaces; a requirement for forming medium and large panels out of HSS and AHSS. Successful production application of these systems testing at multiple stamping operations - including Ford and Chrysler - has validated the capabilities and economic benefits of the system. Although this technology has been adopted in a number of stamping operations, one of the primary barriers to faster adoption and application of this technology in HSS projects is system cost. The cost issue has surfaced because the systems currently in use are built for each individual die as a custom application, thus driving higher tooling costs. This project proposed to better marry the die-specific Force Modulator technology with stamping presses in the form of a press cushion. This system would be designed to operate the binder ring for multiple parts, thus cutting the per-die cost of the technology. This study reports the results of technology field application. This project produced the following conclusions: (1) The Force Modulator system is capable of operating at very high tempos in the stamping environment; (2) The company can generate substantial, controlled holding tonnage (binder ring pressure) necessary to hold high strength steel parts for proper formation during draw operations; (3) A single system can be designed to operate with a family of parts, thus significantly reducing the per-die cost of a FM system; (4) High strength steel parts made with these systems appear to show significant quality improvements; (5) The amounts of steel required to make these parts is typically less than the amounts required with traditional blank-holding technologies; and (6) This technology will aid in the use of higher strength steels in auto and truck production, thus reducing weight and improving fuel efficiency.

Redmond Clark

2009-04-30T23:59:59.000Z

97

Electromechanical coupling in free-standing AlGaNGaN planar structures Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force  

E-Print Network [OSTI]

Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 and Semiconductor Research Center, Wright State University, Dayton, Ohio 45435 J. D. Albrecht Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 E. Pan Department of Civil Engineering

Pan, Ernie

98

Hill Air Force Base Energy Performance Contract  

E-Print Network [OSTI]

the original plants were n t required to meet current ASHRAE 15 standards ~ r refrigerant leak detection and evacuation. The chill r replacement will result in energy savings by utilizi g the more efficient screw-compressor chiller betwe n 30% part load... ed from the system. The concept of this ECM is to redIce stearn distribution pressures to the minimum require to provide necessary steam flow at each of the buildi gs connected on the distribution system, which is curre tly calculated...

Leach, M. D.

99

Hill Air Force Base | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietip sheetK-4In 2013 many| DepartmentAndrea

100

Patrick Air Force Base | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Careerlumens_placard-green.epsEnergy1.pdf MoreEnergyEnergy Amendment(a) WheneverThis

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

ESPC Success Story - Dyess Air Force Base  

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

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 Delicious Rank EERE:YearRound-UpHeat PumpRecord ofESPC ENABLE: ECM Summary ECM Included Not Included Lighting

102

Hickam Air Force Base | Department of Energy  

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

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 Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii CleanHeatin N.J. forTechnology Validation

103

Hill Air Force Base | Department of Energy  

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

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 Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground HawaiiWaste Heat Recovery:|Department

104

Dark Forces At The Tevatron  

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

A simple explanation of the W + dijet excess recently reported by the CDF collaboration involves the introduction of a new gauge boson with sizable couplings to quarks, but with no or highly suppressed couplings to leptons. Anomaly-free theories which include such a leptophobic gauge boson must also include additional particle content, which may include a stable and otherwise viable candidate for dark matter. Based on the couplings and mass of the Z` required to generate the CDF excess, we predict such a dark matter candidate to possess an elastic scattering cross section with nucleons on the order of ? ~ 10-40 cm2, providing a natural explanation for the signals reported by the CoGeNT and DAMA/LIBRA collaborations. In this light, CDF may be observing the gauge boson responsible for the force which mediates the interactions between the dark and visible matter of our universe.

Buckley, Matt [Fermilab; Fileviez Perez, Pavel [Wisconsin U., Madison; Hooper, Dan [Fermilab; Chicago U., Astron. Astrophys. Ctr.; Neil, Ethan [Fermilab

2011-08-19T23:59:59.000Z

105

Norms of Presentational Force  

E-Print Network [OSTI]

://www.americanforensics.org/uploaded-files/tc_41_3_w05.pdf. Open Access version: http://kuscholarworks.ku.edu/dspace/. 15 hope to illustrate the close connection between emotional appeal and premise adequacy. After arguing that the Declaration of Independence and Constitution secure...Innocenti Manolescu, Beth. "Norms of Presentational Force." Argumentation and Advocacy 41 (2005): 139-51. Official publishers version: http://www.americanforensics.org/uploaded-files/tc_41_3_w05.pdf. 1 Citation: Innocenti Manolescu, Beth...

Innocenti, Beth

2005-01-01T23:59:59.000Z

106

Casimir force driven ratchets  

E-Print Network [OSTI]

We explore the non-linear dynamics of two parallel periodically patterned metal surfaces that are coupled by the zero-point fluctuations of the electromagnetic field between them. The resulting Casimir force generates for asymmetric patterns with a time-periodically driven surface-to-surface distance a ratchet effect, allowing for directed lateral motion of the surfaces in sizeable parameter ranges. It is crucial to take into account inertia effects and hence chaotic dynamics which are described by Langevin dynamics. Multiple velocity reversals occur as a function of driving, mean surface distance, and effective damping. These transport properties are shown to be stable against weak ambient noise.

Thorsten Emig

2007-01-26T23:59:59.000Z

107

Atomic Force Microscope  

SciTech Connect (OSTI)

The Atomic Force Microscope (AFM) is a recently developed instrument that has achieved atomic resolution imaging of both conducting and non- conducting surfaces. Because the AFM is in the early stages of development, and because of the difficulty of building the instrument, it is currently in use in fewer than ten laboratories worldwide. It promises to be a valuable tool for obtaining information about engineering surfaces and aiding the .study of precision fabrication processes. This paper gives an overview of AFM technology and presents plans to build an instrument designed to look at engineering surfaces.

Day, R.D.; Russell, P.E.

1988-12-01T23:59:59.000Z

108

Work Force Restructuring Activities  

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

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 Delicious Rank EERE:YearRound-Up from theDepartment of Dept.|Sindhu Jagadamma Women @ Energy:TerriWeiWaterForce

109

Dynamical friction force exerted on spherical bodies  

E-Print Network [OSTI]

We present a rigorous calculation of the dynamical friction force exerted on a spherical massive perturber moving through an infinite homogenous system of field stars. By calculating the shape and mass of the polarization cloud induced by the perturber in the background system, which decelerates the motion of the perturber, we recover Chandrasekhar's drag force law with a modified Coulomb logarithm. As concrete examples we calculate the drag force exerted on a Plummer sphere or a sphere with the density distribution of a Hernquist profile. It is shown that the shape of the perturber affects only the exact form of the Coulomb logarithm. The latter converges on small scales, because encounters of the test and field stars with impact parameters less than the size of the massive perturber become inefficient. We confirm this way earlier results based on the impulse approximation of small angle scatterings.

O. Esquivel; B. Fuchs

2007-04-30T23:59:59.000Z

110

Conference Discussion of the Nuclear Force  

SciTech Connect (OSTI)

Discussion of the nuclear force, lead by a round table consisting of T. Cohen, E. Epelbaum, R. Machleidt, and F. Gross (chair). After an invited talk by Machleidt, published elsewhere in these proceedings, brief remarks are made by Epelbaum, Cohen, and Gross, followed by discussion from the floor moderated by the chair. The chair asked the round table and the participants to focus on the following issues: (1)What does each approach (chiral effective field theory, large Nc, and relativistic phenomenology) contribute to our knowledge of the nuclear force? Do we need them all? Is any one transcendent? (2) How important for applications (few body, nuclear structure, EMC effect, for example) are precise fits to the NN data below 350 MeV? How precise do these fits have to be? (3) Can we learn anything about nonperturbative QCD from these studies of the nuclear force? The discussion presented here is based on a video recording made at the conference and transcribed afterward.

Franz Gross,Thomas D. Cohen,Evgeny Epelbaum,R. Machleidt

2010-12-01T23:59:59.000Z

111

Computing nonlinear force free coronal magnetic fields  

E-Print Network [OSTI]

Knowledge of the structure of the coronal magnetic field is important for our understanding of many solar activity phenomena, e.g. flares and CMEs. However, the direct measurement of coronal magnetic fields is not possible with present methods, and therefore the coronal field has to be extrapolated from photospheric measurements. Due to the low plasma beta the coronal magnetic field can usually be assumed to be approximately force free, with electric currents flowing along the magnetic field lines. There are both observational and theoretical reasons which suggest that at least prior to an eruption the coronal magnetic field is in a nonlinear force free state. Unfortunately the computation of nonlinear force free fields is way more difficult than potential or linear force free fields and analytic solutions are not generally available. We discuss several methods which have been proposed to compute nonlinear force free fields and focus particularly on an optimization method which has been suggested recently. We compare the numerical performance of a newly developed numerical code based on the optimization method with the performance of another code based on an MHD relaxation method if both codes are applied to the reconstruction of a semi-analytic nonlinear force-free solution. The optimization method has also been tested for cases where we add random noise to the perfect boundary conditions of the analytic solution, in this way mimicking the more realistic case where the boundary conditions are given by vector magnetogram data. We find that the convergence properties of the optimization method are affected by adding noise to the boundary data and we discuss possibilities to overcome this difficulty.

T. Wiegelmann; T. Neukirch

2008-01-21T23:59:59.000Z

112

Demonstration of Angle Dependent Casimir Force Between Corrugations  

E-Print Network [OSTI]

The normal Casimir force between a sinusoidally corrugated gold coated plate and a sphere was measured at various angles between the corrugations using an atomic force microscope. A strong dependence on the orientation angle of the corrugation is found. The measured forces were found to deviate from the proximity force approximation and are in agreement with the theory based on the gradient expansion including correlation effects of geometry and material properties. We analyze the role of temperature. The obtained results open new opportunities for control of the Casimir effect in micromechanical systems.

A. A. Banishev; J. Wagner; T. Emig; R. Zandi; U. Mohideen

2012-12-26T23:59:59.000Z

113

A measurable force driven by an excitonic condensate  

SciTech Connect (OSTI)

Free energy signatures related to the measurement of an emergent force (?10{sup ?9}N) due to the exciton condensate (EC) in Double Quantum Wells are predicted and experiments are proposed to measure the effects. The EC-force is attractive and reminiscent of the Casimir force between two perfect metallic plates, but also distinctively different from it by its driving mechanism and dependence on the parameters of the condensate. The proposed experiments are based on a recent experimental work on a driven micromechanical oscillator. Conclusive observations of EC in recent experiments also provide a strong promise for the observation of the EC-force.

Hakio?lu, T. [Department of Physics, Bilkent University, 06800 Ankara (Turkey); Institute of Theoretical and Applied Physics, 48740 Turun, Mu?la (Turkey); zgn, Ege; Gnay, Mehmet [Department of Physics, Bilkent University, 06800 Ankara (Turkey)

2014-04-21T23:59:59.000Z

114

Bedrock channel response to tetonic, climatic and eustatic forcings  

E-Print Network [OSTI]

The response of bedrock channels to external forcings is investigated in this thesis. The approach is to test and constrain a theoretical model for bedrock-channel incision based on shear stress using field data. The primary ...

Snyder, Noah P

2001-01-01T23:59:59.000Z

115

Air Force Renewable Energy Programs  

Broader source: Energy.gov [DOE]

Presentation covers Air Force Renewable Energy Programs and is given at the Spring 2011 Federal Utility Partnership Working Group (FUPWG) meeting.

116

Continuous Forcing Data, Darwin, Australia  

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

Long term, large scale continuous forcing data set for three complete wet seasons (2004-2005, 2005-2006 and 2006-2007) in Darwin, Australia.

Jakob, Christian

117

ForceFit: a code to fit classical force fields to ab-initio potential energy surfaces  

SciTech Connect (OSTI)

The ForceFit program package has been developed for fitting classical force field parameters based upon a force matching algorithm to quantum mechanical gradients of configurations that span the potential energy surface of the system. The program, which runs under Unix and is written in C++, is an easy to use, nonproprietary platform that enables gradient fitting of a wide variety of functional force field forms to quantum mechanical information obtained from an array of common electronic structure codes. All aspects of the fitting process are run from a graphical user interface, from the parsing of quantum mechanical data, assembling of a potential energy surface database, setting the force field and variables to be optimized, choosing a molecular mechanics code for comparison to the reference data, and finally, the initiation of a least squares minimization algorithm. Furthermore, the code is based on a modular templated code design that enables the facile addition of new functionality to the program.

Henson, Neil Jon [Los Alamos National Laboratory; Waldher, Benjamin [WSU; Kuta, Jadwiga [WSU; Clark, Aurora [WSU; Clark, Aurora E [NON LANL

2009-01-01T23:59:59.000Z

118

Air Force Enhanced Use Lease  

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

S e r v i c e - E x c e l l e n c e Headquarters U.S. Air Force 1 Air Force Enhanced Use Lease Mr. Brian Brown 16 Oct. 12 I n t e g r i t y - S e r v i c e - E x c e l l e n c e 2...

119

Air Force Renewable Energy Programs  

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

in All We Do" I n t e g r i t y - S e r v i c e - E x c e l l e n c e THINK GREEN, BUILD GREEN, Topics Air Force Energy Use Air Force Facility Energy Center Current RE...

120

Pulsating Casimir force  

E-Print Network [OSTI]

Based on the Lifshitz theory we show that the illumination of one (Si) plate in the three-layer systems Au--ethanol--Si, Si--ethanol--Si and $\\alpha$-Al${}_2$O${}_3$--ethanol--Si with laser pulses can change the Casimir attraction to Casimir repulsion and vice versa. The proposed effect opens novel opportunities in nanotechnology to actuate the periodic movement in electro- and optomechanical micromachines based entirely on the zero-point oscillations of the quantum vacuum without the action of mechanical springs.

G. L. Klimchitskaya; U. Mohideen; V. M. Mostepanenko

2007-07-18T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Feasibility Study of Economics and Performance of Biopower at the Chanute Air Force Base in Rantoul, Illinois. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Chanute Air Force Base site in Rantoul, Illinois, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) was contacted to provide technical assistance for this project. The purpose of this study was to assess the site for a possible biopower system installation and estimate the cost, performance, and impacts of different biopower options.

Scarlata, C.; Mosey, G.

2013-05-01T23:59:59.000Z

122

Advances in Modeling of Aerodynamic Forces on Bridge Xinzhong Chen1  

E-Print Network [OSTI]

Advances in Modeling of Aerodynamic Forces on Bridge Decks Xinzhong Chen1 and Ahsan Kareem2 Abstract: Aerodynamic forces on bridges are commonly separated into static, self-excited, and buffeting in modeling aerodynamic forces. Formulations for airfoil sections and those based on quasi- steady theory

Chen, Xinzhong

123

Prediction of vehicle impact forces  

E-Print Network [OSTI]

PREDICTION OF VEHICLE IMPACT FORCES A Thesis by DARRELL LAINE KADERKA Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1990 Major Subject...: Civil Engineering PREDICTION OF VEHICLE IMPACT FORCES A Thesis by DARRELL LAINE KADERKA Approved as to style and content by: C. Eugene Buth (Chair of Committee) W. ynn Beason (Member) I? D n E. B ay (Member) es T. P. Yao (Departmen Head) May...

Kaderka, Darrell Laine

1990-01-01T23:59:59.000Z

124

Is Gravity an Entropic Force?  

E-Print Network [OSTI]

The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force. In this paper, we will argue that the idea of gravity as an entropic force is debatable. It is shown that there is no convincing analogy between gravity and entropic force in Verlinde's example. Neither holographic screen nor test particle satisfies all requirements for the existence of entropic force in a thermodynamics system. Furthermore, we show that the entropy increase of the screen is not caused by its statistical tendency to increase entropy as required by the existence of entropic force, but in fact caused by gravity. Therefore, Verlinde's argument for the entropic origin of gravity is problematic. In addition, we argue that the existence of a minimum size of spacetime, together with the Heisenberg uncertainty principle in quantum theory, may imply the fundamental existence of gravity as a geometric property of spacetime. This may provide a further support for the conclusion that gravity is not an entropic force.

Shan Gao

2011-07-16T23:59:59.000Z

125

Using Atom Interferometry to Search for New Forces  

SciTech Connect (OSTI)

Atom interferometry is a rapidly advancing field and this Letter proposes an experiment based on existing technology that can search for new short distance forces. With current technology it is possible to improve the sensitivity by up to a factor of 10{sup 2} and near-future advances will be able to rewrite the limits for forces with ranges from 100 {micro}m to 1km.

Wacker, Jay G.; /SLAC

2009-12-11T23:59:59.000Z

126

Measurement of three-point hitch forces on agricultural tractors  

E-Print Network [OSTI]

dynamometer to be used as an additional tool in monitoring tractor performance. Phases 1, Z, and 3 have been completed and these were described by Green, et al. ( 1985), Morris ( 1984), and Grogan ( 1985), respectively. Phase 4 is the subject.... The upper link was instrumented for axial force measurement. measured forces were resolved into components based on the measured angle of the hitch. A second three-point hitch dynamometer was investigated that used load sensing clevis pins. These pins...

Bandy, Steven Morris

1986-01-01T23:59:59.000Z

127

Entropic-force dark energy reconsidered  

E-Print Network [OSTI]

We reconsider the entropic-force model in which both kind of Hubble terms ${\\dot H}$ and $H^{2}$ appear in the effective dark energy (DE) density affecting the evolution of the main cosmological functions, namely the scale factor, deceleration parameter, matter density and growth of linear matter perturbations. However, we find that the entropic-force model is not viable at the background and perturbation levels due to the fact that the entropic formulation does not add a constant term in the Friedmann equations. On the other hand, if on mere phenomenological grounds we replace the ${\\dot H}$ dependence of the effective DE density with a linear term $H$ without including a constant additive term, we find that the transition from deceleration to acceleration becomes possible but the recent structure formation data strongly disfavors this cosmological scenario. Finally, we briefly compare the entropic-force models with some related DE models (based on dynamical vacuum energy) which overcome these difficulties and are compatible with the present observations.

Spyros Basilakos; Joan Sola

2014-05-21T23:59:59.000Z

128

U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps  

E-Print Network [OSTI]

U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps Mission Develop Quality Leaders for the Air Force. Personnel and Resources Air Force Reserve Officer Training Corps (ROTC) includes four,796 new Second Lieutenants who entered active duty in the United States Air Force. Organization Air Force

Su, Xiao

129

Nuclear force in Lattice QCD  

E-Print Network [OSTI]

We perform the quenched lattice QCD analysis on the nuclear force (baryon-baryon interactions). We employ $20^3\\times 24$ lattice at $\\beta=5.7$ ($a\\simeq 0.19$ fm) with the standard gauge action and the Wilson quark action with the hopping parameters $\\kappa=0.1600, 0.1625, 0.1650$, and generate about 200 gauge configurations. We measure the temporal correlators of the two-baryon system which consists of heavy-light-light quarks. We extract the inter-baryon force as a function of the relative distance $r$. We also evaluate the contribution to the nuclear force from each ``Feynman diagram'' such as the quark-exchange diagram individually, and single out the roles of Pauli-blocking effects or quark exchanges in the inter-baryon interactions.

T. T. Takahashi; T. Doi; H. Suganuma

2006-01-05T23:59:59.000Z

130

Interaction forces between oilwater particle interfaces--Non-DLVO forces  

E-Print Network [OSTI]

silica sphere and a butyl or octyl acetate droplet was measured in an aqueous environment using atomic of the water solubility of the organic liquid, in that the same force­distance characteristics were obtained in industrial applications. They include formulation, stability, and rheological properties of emulsions

Chan, Derek Y C

131

Automatic HTS force measurement instrument  

DOE Patents [OSTI]

A device is disclosed for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rotatable carousel successively locates a selected one of the high temperature superconductor samples in registry with the reference magnet. Mechanism varies the distance between one of the high temperature superconductor samples and the reference magnet, and a sensor measures levitation force of the sample as a function of the distance between the reference magnet and the sample. A method is also disclosed. 3 figs.

Sanders, S.T.; Niemann, R.C.

1999-03-30T23:59:59.000Z

132

Automatic HTS force measurement instrument  

DOE Patents [OSTI]

A device for measuring the levitation force of a high temperature superconductor sample with respect to a reference magnet includes a receptacle for holding several high temperature superconductor samples each cooled to superconducting temperature. A rotatable carousel successively locates a selected one of the high temperature superconductor samples in registry with the reference magnet. Mechanism varies the distance between one of the high temperature superconductor samples and the reference magnet, and a sensor measures levitation force of the sample as a function of the distance between the reference magnet and the sample. A method is also disclosed.

Sanders, Scott T. (Valparaiso, IN); Niemann, Ralph C. (Downers Grove, IL)

1999-01-01T23:59:59.000Z

133

Casimir force on a piston  

E-Print Network [OSTI]

We consider a massless scalar field obeying Dirichlet boundary conditions on the walls of a two-dimensional L x b rectangular box, divided by a movable partition (piston) into two compartments of dimensions a x b and (L-a) x b. We compute the Casimir force on the piston in the limit L -> infinity. Regardless of the value of a/b, the piston is attracted to the nearest end of the box. Asymptotic expressions for the Casimir force on the piston are derived for a > b.

R. M. Cavalcanti

2004-01-26T23:59:59.000Z

134

LABORATORY II FORCE AND CONSERVATION OF ENERGY  

E-Print Network [OSTI]

LABORATORY II FORCE AND CONSERVATION OF ENERGY Lab II - 1 After studying forces and material bodies the relationship between forces and energy conservation. Energy and forces, together, support an extremely be able to: · State the principle of conservation of energy; state the relationship between the work done

Minnesota, University of

135

October 9, 2014- SEAB Task Force Meeting  

Broader source: Energy.gov [DOE]

SECRETARY OF ENERGY ADVISORY BOARDTask Force Meeting on Technology Development for Environmental Management (EM)

136

Work Force Planning for Public Power Utilities  

E-Print Network [OSTI]

Work Force Planning for Public Power Utilities: Ensuring Resources to Meet Projected Utilities Need to Do More to Prepare for Their Future Work Force Needs.............................................................................20 #12;ii Work Force Planning for Public Power Utilities #12;1 Work Force Planning for Public Power

137

Solvent-induced forces in protein folding  

SciTech Connect (OSTI)

The solvent-induced forces between various groups on the protein are examined. It is found that the intramolecular hydrophilic forces are likely to be the strongest forces mediated through the solvent. It is argued that these are probably the most important solvent-induced driving forces in the process of protein folding.

Ben-Naim, A. (Hebrew Univ., Jerusalem (Israel))

1990-08-23T23:59:59.000Z

138

LABORATORY I FORCES AND EQUILIBRIUM  

E-Print Network [OSTI]

of equilibrium is the result of a balance among all of the different forces interacting with the object (sections 1-10), chapter 4 (sections 1, 2, 5- 7), the paragraph at equation 6-13, chapter 10 (sections 5 problems before your lecturer addresses this material. So, it is very important that you read the text

Minnesota, University of

139

Complex Forces Affect China's Biodiversity  

E-Print Network [OSTI]

global efforts have been put into biodiversity conservation, but biodiversity loss continues rapidly in biodiversity conservation to the global level and help protect biodiversity in other developing countries Wiley & Sons, Ltd. #12;208 ConservationBiology COMPLEXITY OF INTERACTING FORCES AFFECTING BIODIVERSITY

140

Friction forces in cosmological models  

E-Print Network [OSTI]

We investigate the dynamics of test particles undergoing friction forces in a Friedmann-Robertson-Walker (FRW) spacetime. The interaction with the background fluid is modeled by introducing a Poynting-Robertson-like friction force in the equations of motion, leading to measurable (at least in principle) deviations of the particle trajectories from geodesic motion. The effect on the peculiar velocities of the particles is investigated for various equations of state of the background fluid and different standard cosmological models. The friction force is found to have major effects on particle motion in closed FRW universes, where it turns the time-asymptotic value (approaching the recollapse) of the peculiar particle velocity from ultra-relativistic (close to light speed) to a co-moving one, i.e., zero peculiar speed. On the other hand, for open or flat universes the effect of the friction is not so significant, because the time-asymptotic peculiar particle speed is largely non-relativistic also in the geodesic case.

Donato Bini; Andrea Geralico; Daniele Gregoris; Sauro Succi

2014-08-23T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Pre-Feasibility Analysis of Pellet Manufacturing on the Former Loring Air Force Base Site. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

SciTech Connect (OSTI)

The U.S. Environmental Protection Agency (EPA) Office of Solid Waste and Emergency Response, in accordance with the RE-Powering America's Lands initiative, engaged the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to conduct feasibility studies to assess the viability of developing renewable energy generating facilities on contaminated sites. This site, in Limestone, Maine -- formerly the location of the Loring Air Force Base but now owned by the Aroostook Band of Micmac -- was selected for the potential to produce heating pellets from woody feedstock. Biomass was chosen as the renewable energy resource to evaluate based on abundant woody-biomass resources available in the area. NREL also evaluates potential savings from converting existing Micmac property from oil-fired heating to pellet heating.

Hunsberger, R.; Mosey, G.

2014-04-01T23:59:59.000Z

142

Memorandum, Protective Force Law Enforcement Authority- May 1, 2009  

Broader source: Energy.gov [DOE]

Investigation allegations that contractor procetive force personnel at a DOE site exceeded their legistative ,regulatory, and policy-based authority by providing on-duty, armed off-site assistance to local law enforcement authorites during other than recapture/recovery operations, and by accessing the local law enforcement database for background checks during the course of on-site administrative traffic stops.

143

Carbon nanotubes adhesion and nanomechanical behavior from peeling force spectroscopy  

E-Print Network [OSTI]

Carbon nanotubes adhesion and nanomechanical behavior from peeling force spectroscopy Julien December 17, 2010 Abstract Applications based on Single Walled Carbon Nanotube (SWNT) are good example such as adhesion energy per unit length, curvature and bending rigidity of the nanotube. A complete picture

Boyer, Edmond

144

OSCILLATORY FLOW FORCED CONVECTION IN MICRO HEAT SPREADERS  

E-Print Network [OSTI]

transfer devices, micro heat pipes, based on capillary pumping of a multiphase uid in microchannels, have-phase forced convection heat transfer and ow characteristics of water in microchannels, both in the laminar) concept for ef cient transport of large, concentrated heat loads is introduced. The MHS is a single

Beskok, Ali

145

Handheld force-controlled ultrasound probe  

E-Print Network [OSTI]

An hand-held force controlled ultrasound probe has been developed. The controller maintains a prescribed contact force between the probe and a patient's body. The device will enhance the diagnostic capability of free-hand ...

Gilbertson, Matthew Wright

2010-01-01T23:59:59.000Z

146

Nuclear Radiological Threat Task Force Established | National...  

National Nuclear Security Administration (NNSA)

Radiological Threat Task Force Established | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

147

On the control of the lateral Casimir force between corrugated surfaces  

E-Print Network [OSTI]

The general perturbative expression for the lateral Casimir force between two plates covered by longitudinal corrugations of arbitrary shape is obtained. This expression is applicable for corrugation periods larger than the separation distance. The cases of asymmetric corrugations are considered, which allow to increase the maximum to minimum force ratio and affect the character of equilibrium points. This opens new opportunities to control the lateral Casimir forces for use in microelectromechanical devices based entirely on the vacuum fluctuation properties.

E. V. Blagov; G. L. Klimchitskaya; U. Mohideen; V. M. Mostepanenko

2004-07-20T23:59:59.000Z

148

Three-body forces and the trinucleons  

SciTech Connect (OSTI)

Three-body forces are discussed in the context of classical, atomic, solid-state and nuclear physics. The basic theoretical ingredients used in the construction of such forces are reviewed. Experimental evidence for three-nucleon forces and an overview of the three-nucleon bound states are presented. 53 refs., 9 figs.

Friar, J.L.

1987-01-01T23:59:59.000Z

149

Fluid forces on circular cylinders  

E-Print Network [OSTI]

on the bearings by a least squares linear fit and it vas found that this relation vas expressed bye Fr 0. 00951kZIR I + where /IXI is the absolute sum of the normal loads on the wheel bearings in dynes and Fz is the frictional resistance in dynes. A total... contains the effects of the Von-german vortices which form and release alternately on opposite Fr )L/2 /Vz ~frock fmgo dcp dcg cw mca vvoter surface ~ ass -vertical center of gravity ds os so+ ei 8Fvv FORCE SYSTEM FIGURE IO HFDF MEASURING...

Dean, Robert G

1956-01-01T23:59:59.000Z

150

Quarkonium Binding and Entropic Force  

E-Print Network [OSTI]

A Q-Qbar bound state represents a balance between repulsive kinetic and attractive potential energy. In a hot quark-gluon plasma, the interaction potential experiences medium effects. Color screening modifies the attractive binding force between the quarks, while the increase of entropy with Q-Qbar separation gives rise to a growing repulsion. We study the role of these phenomena for in-medium Q-Qbar binding and dissociation. It is found that the relevant potential for Q-Qbar binding is the free energy F; with increasing Q-Qbar separation, further binding through the internal energy U is compensated by repulsive entropic effects.

Satz, Helmut

2015-01-01T23:59:59.000Z

151

Thermomagnetic Force in Polyatomic Gases  

E-Print Network [OSTI]

decreases as H/P is increased above about 500 Oe/Torr. Another difference in the two effects is that the SB effect is a universal function of H/P for the entire range of values covered. This does not appear to be true in the force effect. For NO... magnetic field also causes a de- crease in the shear viscosity of oxygen. These effects in Oz were later observed in NO and were extensively studied. It was observed that the trans- port coefficients decrease in a magnetic field 8, that the effect...

Larchez, M. E.; Adair, Thomas W.

1971-01-01T23:59:59.000Z

152

Direct measurement of thermophoretic forces  

E-Print Network [OSTI]

We study the thermophoretic motion of a micron sized single colloidal particle in front of a flat wall by evanescent light scattering. To quantify thermophoretic effects we analyse the nonequilibrium steady state (NESS) of the particle in a constant temperature gradient perpendicular to the confining walls. We propose to determine thermophoretic forces from a 'generalized potential' associated with the probability distribution of the particle position in the NESS. Experimentally we demonstrate, how this spatial probability distribution is measured and how thermophoretic forces can be extracted with 10 fN resolution. By varying temperature gradient and ambient temperature, the temperature dependence of Soret coefficient $S_T(T)$ is determined for $r = 2.5 \\mu m$ polystyrene and $r = 1.35 \\mu m$ melamine particles. The functional form of $S_T(T)$ is in good agreement with findings for smaller colloids. In addition, we measure and discuss hydrodynamic effects in the confined geometry. The theoretical and experimental technique proposed here extends thermophoresis measurements to so far inaccessible particle sizes and particle solvent combinations.

Laurent Helden; Ralf Eichhorn; Clemens Bechinger

2014-12-19T23:59:59.000Z

153

Report of the Fermilab ILC Citizens' Task Force  

SciTech Connect (OSTI)

Fermi National Accelerator Laboratory convened the ILC Citizens' Task Force to provide guidance and advice to the laboratory to ensure that community concerns and ideas are included in all public aspects of planning and design for a proposed future accelerator, the International Linear Collider. In this report, the members of the Task Force describe the process they used to gather and analyze information on all aspects of the proposed accelerator and its potential location at Fermilab in northern Illinois. They present the conclusions and recommendations they reached as a result of the learning process and their subsequent discussions and deliberations. While the Task Force was charged to provide guidance on the ILC, it became clear during the process that the high cost of the proposed accelerator made a near-term start for the project at Fermilab unlikely. Nevertheless, based on a year of extensive learning and dialogue, the Task Force developed a series of recommendations for Fermilab to consider as the laboratory develops all successor projects to the Tevatron. The Task Force recognizes that bringing a next-generation particle physics project to Fermilab will require both a large international effort and the support of the local community. While the Task Force developed its recommendations in response to the parameters of a future ILC, the principles they set forth apply directly to any large project that may be conceived at Fermilab, or at other laboratories, in the future. With this report, the Task Force fulfills its task of guiding Fermilab from the perspective of the local community on how to move forward with a large-scale project while building positive relationships with surrounding communities. The report summarizes the benefits, concerns and potential impacts of bringing a large-scale scientific project to northern Illinois.

None

2008-06-01T23:59:59.000Z

154

A Framework for Large-Force Task Planning of Mobile and Redundant Manipulators  

E-Print Network [OSTI]

of the Cartesian space is designed to generate the Force Workspace. Based on the FW generation algorithm to the Journal of Robotic Systems as a full paper September 1998 #12;2 ABSTRACT In this paper, a framework tackling the problem of large wrench application using robotic systems with limited force or torque

Papadopoulos, Evangelos

155

High-resolution friction force microscopy under electrochemical control Aleksander Labuda,1  

E-Print Network [OSTI]

High-resolution friction force microscopy under electrochemical control Aleksander Labuda,1 William and development of a friction force microscope for high-resolution studies in electrochemical environments in liquids. The noise of the system is analyzed based on a methodology for the quantification of all

Grütter, Peter

156

Theory of single-molecule experiments in the overstretching force regime  

E-Print Network [OSTI]

We present a statistical mechanics analysis of the finite-size elasticity of biopolymers, consisting of domains which can exhibit transitions between more than one stable state at large applied force. The constant-force (Gibbs) and constant-displacement (Helmholtz) formulations of single molecule stretching experiments are shown to converge in the thermodynamic limit. Monte Carlo simulations of continuous three dimensional polymers of variable length are carried out, based on this formulation. We demonstrate that the experimental force-extension curves for short and long chain polymers are described by a unique universal model, despite the differences in chemistry and rate-dependence of transition forces.

Fabio Manca; Stefano Giordano; Pier Luca Palla; Fabrizio Cleri; Luciano Colombo

2012-05-13T23:59:59.000Z

157

Systems and methods of detecting force and stress using tetrapod nanocrystal  

DOE Patents [OSTI]

Systems and methods of detecting force on the nanoscale including methods for detecting force using a tetrapod nanocrystal by exposing the tetrapod nanocrystal to light, which produces a luminescent response by the tetrapod nanocrystal. The method continues with detecting a difference in the luminescent response by the tetrapod nanocrystal relative to a base luminescent response that indicates a force between a first and second medium or stresses or strains experienced within a material. Such systems and methods find use with biological systems to measure forces in biological events or interactions.

Choi, Charina L.; Koski, Kristie J.; Sivasankar, Sanjeevi; Alivisatos, A. Paul

2013-08-20T23:59:59.000Z

158

Casimir Forces in a Piston Geometry at Zero and Finite Temperatures  

E-Print Network [OSTI]

We study Casimir forces on the partition in a closed box (piston) with perfect metallic boundary conditions. Related closed geometries have generated interest as candidates for a repulsive force. By using an optical path expansion we solve exactly the case of a piston with a rectangular cross section, and find that the force always attracts the partition to the nearest base. For arbitrary cross sections, we can use an expansion for the density of states to compute the force in the limit of small height to width ratios. The corrections to the force between parallel plates are found to have interesting dependence on the shape of the cross section. Finally, for temperatures in the range of experimental interest we compute finite temperature corrections to the force (again assuming perfect boundaries).

M. P. Hertzberg; R. L. Jaffe; M. Kardar; A. Scardicchio

2007-11-18T23:59:59.000Z

159

Casimir force between integrable and chaotic pistons  

E-Print Network [OSTI]

We have computed numerically the Casimir force between two identical pistons inside a very long cylinder, considering different shapes for the pistons. The pistons can be considered as quantum billiards, whose spectrum determines the vacuum force. The smooth part of the spectrum fixes the force at short distances, and depends only on geometric quantities like the area or perimeter of the piston. However, correcting terms to the force, coming from the oscillating part of the spectrum which is related to the classical dynamics of the billiard, are qualitatively different for classically integrable or chaotic systems. We have performed a detailed numerical analysis of the corresponding Casimir force for pistons with regular and chaotic classical dynamics. For a family of stadium billiards, we have found that the correcting part of the Casimir force presents a sudden change in the transition from regular to chaotic geometries.

Ezequiel Alvarez; Francisco Diego Mazzitelli; Alejandro G. Monastra; Diego A. Wisniacki

2010-07-27T23:59:59.000Z

160

The force exerted by a fireball  

SciTech Connect (OSTI)

The force exerted by a fireball was deduced both from the change of the equilibrium position of a pendulum and from the change in the pendulum oscillation period. That measured force was found to be several times larger than the force exerted by the ions accelerated across the double layer that is assumed to surround the fireball. The force enhancement that is expected by ion-neutral collisions in the fireball is evaluated to be too small to explain the measured enhanced force. Gas pressure increase, due to gas heating through electron-neutral collisions, as recently suggested [Stenzel et al., J. Appl. Phys. 109, 113305 (2011)], is examined as the source for the force enhancement.

Makrinich, G.; Fruchtman, A. [H.I.T. - Holon Institute of Technology, 52 Golomb St., Holon 58102 (Israel)] [H.I.T. - Holon Institute of Technology, 52 Golomb St., Holon 58102 (Israel)

2014-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

On single-molecule DNA sequencing with atomic force microscopy using functionalized carbon nanotube probes  

E-Print Network [OSTI]

A novel DNA sequencing method is proposed based on the specific binding nature of nucleotides and measured by an atomic force microscope (AFM). A single molecule of DNA is denatured and immobilized on an atomically fiat ...

Burns, Daniel James

2004-01-01T23:59:59.000Z

162

Directed Self-Assembly at the 10 nm Scale by Using Capillary Force-Induced Nanocohesion  

E-Print Network [OSTI]

We demonstrated a new nanoassembly strategy based on capillary force-induced cohesion of high-aspect ratio nanostructures made by electron-beam lithography. Using this strategy, ordered complex pattern were fabricated from ...

Duan, Huigao

163

Fast Computation of Optimal Contact Forces  

E-Print Network [OSTI]

and force optimization for the legs of a quadruped robot [21]. Some experimental ... Applications that involve the solution of many FOPs, such as finding the...

2007-09-28T23:59:59.000Z

164

Interagency Energy Management Task Force Members  

Broader source: Energy.gov [DOE]

The Interagency Energy Management Task Force is led by the Federal Energy Management Program director. Members include energy and sustainability managers from federal agencies.

165

Document prepared by APIC Bioterrorism Task Force  

E-Print Network [OSTI]

ATTACHMENT Document prepared by APIC Bioterrorism Task Force Judith F. English, Mae Y. Cundiff of civilian populations not recommended. 3. Infection Control Practices for Patient Management Symptomatic

Oliver, Douglas L.

166

Nuclear Force from Lattice QCD  

E-Print Network [OSTI]

The first lattice QCD result on the nuclear force (the NN potential) is presented in the quenched level. The standard Wilson gauge action and the standard Wilson quark action are employed on the lattice of the size 16^3\\times 24 with the gauge coupling beta=5.7 and the hopping parameter kappa=0.1665. To obtain the NN potential, we adopt a method recently proposed by CP-PACS collaboration to study the pi pi scattering phase shift. It turns out that this method provides the NN potentials which are faithful to those obtained in the analysis of NN scattering data. By identifying the equal-time Bethe-Salpeter wave function with the Schroedinger wave function for the two nucleon system, the NN potential is reconstructed so that the wave function satisfies the time-independent Schroedinger equation. In this report, we restrict ourselves to the J^P=0^+ and I=1 channel, which enables us to pick up unambiguously the ``central'' NN potential V_{central}(r). The resulting potential is seen to posses a clear repulsive core of about 500 MeV at short distance (r < 0.5 fm). Although the attraction in the intermediate and long distance regions is still missing in the present lattice set-up, our method is appeared to be quite promising in reconstructing the NN potential with lattice QCD.

Noriyoshi ISHII; Sinya AOKI; Tetsuo HATSUDA

2006-09-30T23:59:59.000Z

167

Indirect radiative forcing by ion-mediated nucleation of aerosol  

SciTech Connect (OSTI)

A clear understanding of particle formation mechanisms is critical for assessing aerosol indirect radiative forcing and associated climate feedback processes. Recent studies reveal the importance of ion-mediated nucleation (IMN) in generating new particles and cloud condensation nuclei (CCN) in the atmosphere. Here we implement for the first time a physically based treatment of IMN into the Community Atmosphere Model version 5. Our simulations show that, compared to globally averaged results based on binary homogeneous nucleation (BHN), the presence of ionization (i.e., IMN) halves H2SO4 column burden, but increases the column integrated nucleation rate by around one order of magnitude, total particle number burden by a factor of ~ 3, CCN burden by ~ 10% (at 0.2% supersaturation) to 65% (at 1.0% supersaturation), and cloud droplet number burden by ~ 18%. Compared to BHN, IMN increases cloud liquid water path by 7.5%, decreases precipitation by 1.1%, and increases total cloud cover by 1.9%. This leads to an increase of total shortwave cloud radiative forcing by 3.67 W/m2 (more negative) and longwave cloud forcing by 1.78 W/m2 (more positive), resulting in a -1.9 W/m2 net change in cloud radiative forcing associated with IMN. The significant impacts of ionization on global aerosol formation, CCN abundance, and cloud radiative forcing may provide an important physical mechanism linking the global energy balance to various processes affecting atmospheric ionization, which should be properly represented in climate models.

Yu, Fangqun; Luo, Gan; Liu, Xiaohong; Easter, Richard C.; Ma, Xiaoyan; Ghan, Steven J.

2012-12-03T23:59:59.000Z

168

Gravitational force between two electrons in superconductors  

E-Print Network [OSTI]

The attractive gravitational force between two electrons in superconductors is deduced from the Eddington-Dirac large number relation, together with Beck and Mackey electromagnetic model of vacuum energy in superconductors. This force is estimated to be weaker than the gravitational attraction between two electrons in the vacuum.

Clovis Jacinto de Matos

2007-11-19T23:59:59.000Z

169

U.S.Air Force Advanced Power  

E-Print Network [OSTI]

efficiency,improved power distribution,reduced fuel dependency,reduction of noise,heat,and visual signatureU.S.Air Force Advanced Power Technology Office (APTO) U.S.Air Force Advanced Power Technology/Wind Powered Hydrogen Generation for Fuel Cell Applications · Waste-To-Energy APTO/Small Business Innovation

170

Water Conservation Task Force (2014 Charge)  

E-Print Network [OSTI]

Water Conservation Task Force (2014 Charge) The Task Force will advise the Chancellor and Campus Provost/Executive Vice Chancellor (CP/EVC) on current and past water use and provide recommendations on implementation of policies for potable water use reductions in support of The Regents Policy on Sustainable

California at Santa Cruz, University of

171

Sustainability Initiative Task Force Final Report  

E-Print Network [OSTI]

UW­Madison Sustainability Initiative Task Force Final Report October 2010 #12;We are pleased to present the final report of the campus Sustainability Task Force. This report fulfills the charge we gave to sustainability for consideration by UW­Madison's leadership and campus community. There are many reasons why

Sheridan, Jennifer

172

Forces on laboratory model dredge cutterhead  

E-Print Network [OSTI]

FORCES ON LABORATORY MODEL DREDGE CUTTERHEAD A Thesis by DUSTIN RAY YOUNG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2009 Major Subject: Ocean Engineering FORCES ON LABORATORY MODEL DREDGE CUTTERHEAD A Thesis by DUSTIN RAY YOUNG Submitted to the Office of Graduate Studies...

Young, Dustin Ray

2010-07-14T23:59:59.000Z

173

Muon Collider Task Force Report  

SciTech Connect (OSTI)

Muon Colliders offer a possible long term path to lepton-lepton collisions at center-of-mass energies {radical}s {ge} 1 TeV. In October 2006 the Muon Collider Task Force (MCTF) proposed a program of advanced accelerator R&D aimed at developing the Muon Collider concept. The proposed R&D program was motivated by progress on Muon Collider design in general, and in particular, by new ideas that have emerged on muon cooling channel design. The scope of the proposed MCTF R&D program includes muon collider design studies, helical cooling channel design and simulation, high temperature superconducting solenoid studies, an experimental program using beams to test cooling channel RF cavities and a 6D cooling demonstration channel. The first year of MCTF activities are summarized in this report together with a brief description of the anticipated FY08 R&D activities. In its first year the MCTF has made progress on (1) Muon Collider ring studies, (2) 6D cooling channel design and simulation studies with an emphasis on the HCC scheme, (3) beam preparations for the first HPRF cavity beam test, (4) preparations for an HCC four-coil test, (5) further development of the MANX experiment ideas and studies of the muon beam possibilities at Fermilab, (6) studies of how to integrate RF into an HCC in preparation for a component development program, and (7) HTS conductor and magnet studies to prepare for an evaluation of the prospects for of an HTS high-field solenoid build for a muon cooling channel.

Ankenbrandt, C.; Alexahin, Y.; Balbekov, V.; Barzi, E.; Bhat, C.; Broemmelsiek, D.; Bross, A.; Burov, A.; Drozhdin, A.; Finley, D.; Geer, S.; /Fermilab /Argonne /Brookhaven /Jefferson Lab /LBL, Berkeley /MUONS Inc., Batavia /UCLA /UC, Riverside /Mississippi U.

2007-12-01T23:59:59.000Z

174

Force localization in contracting cell layers  

E-Print Network [OSTI]

Epithelial cell layers on soft elastic substrates or pillar arrays are commonly used as model systems for investigating the role of force in tissue growth, maintenance and repair. Here we show analytically that the experimentally observed localization of traction forces to the periphery of the cell layers does not necessarily imply increased local cell activity, but follows naturally from the elastic problem of a finite-sized contractile layer coupled to an elastic foundation. For homogeneous contractility, the force localization is determined by one dimensionless parameter interpolating between linear and exponential force profiles for the extreme cases of very soft and very stiff substrates, respectively. If contractility is sufficiently increased at the periphery, outward directed displacements can occur at intermediate positions, although the edge itself still retracts. We also show that anisotropic extracellular stiffness leads to force localization in the stiffer direction, as observed experimentally.

Carina M. Edwards; Ulrich S. Schwarz

2012-01-13T23:59:59.000Z

175

Measurement of tool forces in diamond turning  

SciTech Connect (OSTI)

A dynamometer has been designed and built to measure forces in diamond turning. The design includes a 3-component, piezoelectric transducer. Initial experiments with this dynamometer system included verification of its predicted dynamic characteristics as well as a detailed study of cutting parameters. Many cutting experiments have been conducted on OFHC Copper and 6061-T6 Aluminum. Tests have involved investigation of velocity effects, and the effects of depth and feedrate on tool forces. Velocity has been determined to have negligible effects between 4 and 21 m/s. Forces generally increase with increasing depth of cut. Increasing feedrate does not necessarily lead to higher forces. Results suggest that a simple model may not be sufficient to describe the forces produced in the diamond turning process.

Drescher, J.; Dow, T.A.

1988-12-01T23:59:59.000Z

176

Hydrodynamic force characteristics in the splash zone  

SciTech Connect (OSTI)

A comprehensive experimental study concerned with the hydrodynamic force characteristics of both rigid and compliant surface piercing cylinders, with a major focus on the local nature of these characteristics as realized in the splash zone and in the fully submerged zone immediately below this region, has been in progress at the University of Melbourne for the last three years. This paper concentrates on a portion of this study associated with uni-directional regular wave inputs with wave steepness (H/{lambda}) in the range 0.0005--0.1580 and Keulegan-Carpenter (KC) numbers in the range 2--15 which encompasses inertia force dominant (KC<5) to drag force significant conditions (5forces (using a multi-segmented force transducer) and the underlying kinematics (using Acoustic Doppler Velocimetry) at different elevations throughout the crest to trough region were measured during the tests. The measured wave forces at different elevations have been interpreted using the Morison equation to determine experimental values of force coefficients C{sub D} and C{sub M}. The results in hand suggest that both C{sub D} and C{sub M} values in the splash zone are higher and exhibit a mild frequency dependence in comparison with their corresponding counterparts for the fully submerged segments. For weakly nonlinear waves (H/{lambda}<0.1) only wave fluctuation is found to be important and any mild nonlinearities do not significantly affect the test model force response and consequently the force coefficient values. However, for relatively nonlinear waves (0.1force response, producing ringing effects in conducive conditions.

Daliri, M.R.; Haritos, N. [Univ. of Melbourne, Parkville, Victoria (Australia). Dept. of Civil and Environmental Engineering

1996-12-31T23:59:59.000Z

177

Field-regulated force by grafted polyelectrolytes  

E-Print Network [OSTI]

Generation of mechanical force regulated by external electric field is studied both theoretically and by molecular dynamics (MD) simulations. The force arises in deformable bodies linked to the free end of a grafted polyelectrolyte chain which is exposed to electric field that favours its adsorption. We consider a few target bodies with different force-deformation relations including (i) linear and (ii) cubic dependences as well as (iii) Hertzian-like force. Such force-deformation relations mimic the behaviour of (i) coiled and (ii) stretched polymer chains, respectively, or (iii) that of a squeezed colloidal particle. The magnitude of the arising force varies over a wide interval although the electric field alters within a relatively narrow range only. The predictions of our theory agree quantitatively well with the results of numerical simulations. Both cases of zero and finite electrical current are investigated and we do not obtain substantial differences in the force generated. The phenomenon studied could possibly be utilised to design, e.g., vice-like devices to fix nano-sized objects.

Christian Seidel; Yury A. Budkov; Nikolay V. Brilliantov

2014-11-08T23:59:59.000Z

178

Los Angeles Air Force Base Vehicle to Grid Pilot Project  

E-Print Network [OSTI]

for the imbalance energy market or contingencies only.competitive markets for trading energy and each of its AS.potential market revenues will trump high energy costs in

Marnay, Chris

2014-01-01T23:59:59.000Z

179

Nellis Air Force Base solar array provides model for renewable...  

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

Power Company. MMA owns and operates the solar plant on Nellis land, and Nellis buys the electricity at a guaranteed fixed rate for 20 years. As a result, the project cost no...

180

Hill Air Force Base as a case study for linking  

E-Print Network [OSTI]

;Contaminants of Concern: ­ Trichloroethylene (TCE) ­ Tetrachloroethylene (PERC) ­ Carbon Tetrachloride

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Ultrasonic-Based Mode-Synthesizing Atomic Force Microscopy - 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layeredof2014 EIAUltrafast TransformationsCarbonInnovation

182

Los Angeles Air Force Base Vehicle to Grid Pilot Project  

E-Print Network [OSTI]

viability of a complex new technology as being demonstratedEnvironmental Energy Technologies Division to be presentedand Energy, Traffic Technology International, Feb-Mar 2009.

Marnay, Chris

2014-01-01T23:59:59.000Z

183

Los Angeles Air Force Base Vehicle to Grid Pilot Demonstration  

E-Print Network [OSTI]

Environmental Energy Technologies Division Presented atEnvironmental Security Technology Certification Program (

DeForest, Nicholas

2014-01-01T23:59:59.000Z

184

Hickam Air Force Base Fuel Cell Vehicles: Early Implementation Experience |  

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

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 Delicious Rank EERE:Year in3.pdfEnergy Health and Productivity Questionnaire (HPQ) SurveyHelpHelping toHenry

185

Hickam Air Force Base Fuel Cell Vehicles: Early Implementation Experience  

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

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 Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Ground Hawaii CleanHeatin N.J. for

186

Renewable Hydrogen Production at Hickam Air Force Base  

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

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 Delicious RankCombustion | Department ofT ib l L dDepartmentnews-flashes OfficeTexasEnergyFuel Vehicle

187

Renewable Hydrogen Production at Hickam Air Force Base | Department of  

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

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 Delicious RankCombustion | Department ofT ib l L dDepartmentnews-flashes OfficeTexasEnergyFuel VehicleEnergy at

188

Born on an Air Force base in Mississippi, Jan never  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply forBiosurveillance A8^Border

189

Sensing Current and Forces with SPM  

SciTech Connect (OSTI)

Atomic force microscopy (AFM) and scanning tunneling microscopy (STM) are well established techniques to image surfaces and to probe material properties at the atomic and molecular scale. In this review, we show hybrid combinations of AFM and STM that bring together the best of two worlds: the simultaneous detection of atomic scale forces and conduction properties. We illustrate with several examples how the detection of forces during STM and the detection of currents during AFM can give valuable additional information of the nanoscale material properties.

Park, Jeong Y.; Maier, Sabine; Hendriksen, Bas; Salmeron, Miquel

2010-07-02T23:59:59.000Z

190

Forced oscillations in magnetized accretion disks and QPOs  

E-Print Network [OSTI]

We propose a new model for these QPOs based on forced oscillations induced in the accretion disk due to the stellar magnetic field. First, it is shown that a magnetized accretion disk evolving in a rotating nonaxisymmetric magnetic field anchored to a neutron star will be subject to three kinds of resonances: a corotation resonance, a Lindblad resonance due to a driving force, and a parametric resonance due to the time varying epicyclic frequencies. In the second part of the paper, we focus on the linear response of a thin accretion disk, developing the density perturbation as the sum of free wave solutions and non-wavelike disturbances. In the last part, we show results of 2D numerical simulations of a simplified version of the accretion disk consisting of a column of plasma threaded by a vertical magnetic field. It is argued that the nearly periodic motion induced in the disk will produce high quality factor QPOs.

J. Ptri

2005-07-06T23:59:59.000Z

191

Self-force on a charge outside a five-dimensional black hole  

E-Print Network [OSTI]

We compute the electromagnetic self-force acting on a charged particle held in place at a fixed position r outside a five-dimensional black hole described by the Schwarzschild-Tangherlini metric. Using a spherical-harmonic decomposition of the electrostatic potential and a regularization prescription based on the Hadamard Green's function, we express the self-force as a convergent mode sum. The self-force is first evaluated numerically, and next presented as an analytical expansion in powers of R/r, with R denoting the event-horizon radius. The power series is then summed to yield a closed-form expression. Unlike its four-dimensional version, the self-force features a dependence on a regularization parameter s that can be interpreted as the particle's radius. The self-force is repulsive at large distances, and its behavior is related to a model according to which the force results from a gravitational interaction between the black hole and the distribution of electrostatic field energy attached to the particle. The model, however, is shown to become inadequate as r becomes comparable to R, where the self-force changes sign and becomes attractive. We also calculate the self-force acting on a particle with a scalar charge, which we find to be everywhere attractive. This is to be contrasted with its four-dimensional counterpart, which vanishes at any r.

Matthew J. S. Beach; Eric Poisson; Bernhard G. Nickel

2014-05-22T23:59:59.000Z

192

SCM Forcing Data Derived from NWP Analyses  

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

Forcing data, suitable for use with single column models (SCMs) and cloud resolving models (CRMs), have been derived from NWP analyses for the ARM (Atmospheric Radiation Measurement) Tropical Western Pacific (TWP) sites of Manus Island and Nauru.

Jakob, Christian

193

Scattering theory approach to electrodynamic Casimir forces  

E-Print Network [OSTI]

We give a comprehensive presentation of methods for calculating the Casimir force to arbitrary accuracy, for any number of objects, arbitrary shapes, susceptibility functions, and separations. The technique is applicable ...

Rahi, Sahand Jamal

194

U.S. Air Force UESCs  

Broader source: Energy.gov [DOE]

Presentationgiven at the Spring 2009 Federal Utility Partnership Working Group (FUPWG) meetingcovers the U.S. Air Force's approval process, submittal requirements, and guidelines for utility energy service contracts (UESCs).

195

Forced orientation of graphs Babak Farzad  

E-Print Network [OSTI]

Forced orientation of graphs Babak Farzad Mohammad Mahdian Ebad S. Mahmoodian Amin Saberi Bardia, USA. (saberi@cc.gatech.edu) Department of Computer Science, UIUC, Urbana, USA. (sadri@cs.uiuc.edu) 1

Toronto, University of

196

Macroscopic approach to the Casimir friction force  

E-Print Network [OSTI]

The general formula is derived for the vacuum friction force between two parallel perfectly flat planes bounding two material media separated by a vacuum gap and moving relative to each other with a constant velocity $\\mathbf{v}$. The material media are described in the framework of macroscopic electrodynamics whereas the nonzero temperature and dissipation are taken into account by making use of the Kubo formulae from non-equilibrium statistical thermodynamics. The formula obtained provides a rigorous basis for calculation of the vacuum friction force within the quantum field theory methods in the condensed matter physics. The revealed $v$-dependence of the vacuum friction force proves to be the following: for zero temperature ($T=0$) it is proportional to $(v/c)^3$ and for $T>0$ this force is linear in $(v/c)$.

V. V. Nesterenko; A. V. Nesterenko

2014-03-13T23:59:59.000Z

197

Clinch River MRS Task Force Recommendations  

Broader source: Energy.gov [DOE]

The Clinch River HRS Task Force was appointed in July 1985 by the Roane County Executive and the Oak Ridge City Council to evaluate the Monitored Retrievable Storage (MRS) facility proposed by the...

198

A Dynamic Defense Force for Japan  

E-Print Network [OSTI]

Japan Self-Defense Forces (SDF). Along with the new NDPG,set a direction for the SDF in the post-9/11 inter- nationalsituation also requires the SDF take on these dynamic

TAKAHASHI, Sugio

2012-01-01T23:59:59.000Z

199

Sponsored by Air Force Research Laboratory  

E-Print Network [OSTI]

Sponsored by Air Force Research Laboratory Space Vehicles Directorate Directed Energy Directorate PROGRAM Space Scholars and Directed Energy Scholars The Space Vehicles and Directed Energy Directorates Scholars The Phillips Scholars internship offers an edu- cational and fulfilling summer job experience

Piao, Daqing

200

Static forces in a superconducting magnet bearing  

SciTech Connect (OSTI)

Static levitation forces and stiffnesses in a superconducting bearing consisting of concentric ring magnets and a superconducting YBaCuO ring are investigated. In the field-cooled mode a levitation force of 20 N has been achieved. The axial and radial stiffnesses have values of 15 N/mm and 10 N/mm, respectively. An arrangement with two bearings supporting a high speed shaft is now under development. A possible application of superconducting magnetic bearings is flywheels for energy storage.

Stoye, P.; Fuchs, G. [Institut fuer Festkoerper- und Werkstofforschung, Dresden (Germany)] [Institut fuer Festkoerper- und Werkstofforschung, Dresden (Germany); Gawalek, W.; Goernert, P. [Institut fuer Physikalische Hochtechnologie, Jena (Germany)] [Institut fuer Physikalische Hochtechnologie, Jena (Germany); Gladun, A. [Technische Univ., Dresden (Germany)] [Technische Univ., Dresden (Germany)

1995-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

On the transferability of three water models developed by adaptive force matching  

E-Print Network [OSTI]

Water is perhaps the most simulated liquid. Recently three water models have been developed following the adaptive force matching (AFM) method that provides excellent predictions of water properties with only electronic structure information as a reference. Compared to many other electronic structure based force fields that rely on fairly sophisticated energy expressions, the AFM water models use point-charge based energy expressions that are supported by most popular molecular dynamics packages. An outstanding question regarding simple force fields is whether such force fields provide reasonable transferability outside of their conditions of parameterization. A survey of three AFM water models, B3LYPD-4F, BLYPSP-4F, and WAIL are provided for simulations under conditions ranging from the melting point up to the critical point. By including ice-Ih configurations in the training set, the WAIL potential predicts the melting temperate, TM, of ice-Ih correctly. Without training for ice, BLYPSP-4F underestimates TM...

Hu, Hongyi; Wang, Feng

2015-01-01T23:59:59.000Z

202

Forced dewetting on porous media  

E-Print Network [OSTI]

We study the dewetting of a porous plate withdrawn from a bath of fluid. The microscopic contact angle is fixed to zero and the flow is assumed to be parallel to the plate (lubrication approximation). The ordinary differential equation involving the position of the water surface is analysed in phase space by means of numerical integration. We show the existence of a critical value of the capillary number $\\eta U / \\gamma$, above which no stationary contact line can exist. An analytical model, based on asymptotic matching is developed, that reproduces the dependence of the critical capillary number on the angle of the plate with respect to the horizontal for large control parameters (3/2 power law).

Olivier Devauchelle; Christophe Josserand; Stephane Zaleski

2005-09-13T23:59:59.000Z

203

Van der Waals forces from first principles for periodic systems: Application to graphene-water interactions  

E-Print Network [OSTI]

We extend the method of Silvestrelli [P. L. Silvestrelli, J. Chem. Phys. 139, 054106 (2013)] to approximate long-range van der Waals interactions at the density functional theory level based on maximally localized Wannier functions combined with the quantum harmonic oscillator model, to periodic systems. Applying this scheme to study London dispersion forces between graphene and water layers, we demonstrate that collective many-body effects beyond simple additive pair-wise interactions are essential to accurately describe van der Waals forces.

Pouya Partovi-Azar; T. D. Khne

2015-04-17T23:59:59.000Z

204

Van der Waals forces from first principles for periodic systems: Application to graphene-water interactions  

E-Print Network [OSTI]

We extend the method of Silvestrelli [P. L. Silvestrelli, J. Chem. Phys. 139, 054106 (2013)] to approximate long-range van der Waals interactions at the density functional theory level based on maximally localized Wannier functions combined with the quantum harmonic oscillator model, to periodic systems. Applying this scheme to study London dispersion forces between graphene and water layers, we demonstrate that collective many-body effects beyond simple additive pair-wise interactions are essential to accurately describe van der Waals forces.

Partovi-Azar, Pouya

2015-01-01T23:59:59.000Z

205

Half-harmonic Kelvin probe force microscopy with transfer function correction  

SciTech Connect (OSTI)

An approach for surface potential imaging based on half-harmonic band excitation (BE) in Kelvin probe force microscopy is demonstrated. Using linear and half-harmonic BE enables quantitative correction of the cantilever transfer function. Half-harmonic band excitation Kelvin probe force microscopy (HBE KPFM) thus allows quantitative separation of surface potential and topographic contributions to the signal, obviating the primary sources of topographic cross-talk. HBE KPFM imaging and voltage spectroscopy methods are illustrated for several model systems.

Guo, Senli [ORNL] [ORNL; Jesse, Stephen [ORNL] [ORNL; Kalinin, Sergei V [ORNL] [ORNL

2012-01-01T23:59:59.000Z

206

Mechanical Network in Titin Immunoglobulin from Force Distribution Analysis  

E-Print Network [OSTI]

Mechanical Network in Titin Immunoglobulin from Force Distribution Analysis Wolfram Stacklies1. , M, Stuttgart, Germany Abstract The role of mechanical force in cellular processes is increasingly revealed force propagates within proteins determines their mechanical behavior yet remains largely unknown. We

Gräter, Frauke

207

Climate Change Task Force Webinar Series | Department of Energy  

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

Climate Change Task Force Webinar Series Climate Change Task Force Webinar Series The four-part Climate Change Impacts and Indian Country webinar series provided tribal leaders an...

208

Protective Force Protocols for ESS Supported Performance Tests...  

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

Protective Force Protocols for ESS Supported Performance Tests and Exercises, March 12, 2007 Protective Force Protocols for ESS Supported Performance Tests and Exercises, March 12,...

209

Government and Industry A Force for Collaboration at the Energy...  

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

Government and Industry A Force for Collaboration at the Energy Roadmap Update Workshop Government and Industry A Force for Collaboration at the Energy Roadmap Update Workshop...

210

6.641 Electromagnetic Fields, Forces, and Motion, Spring 2003  

E-Print Network [OSTI]

Electric and magnetic quasistatic forms of Maxwell's equations applied to dielectric, conduction, and magnetization boundary value problems. Electromagnetic forces, force densities, and stress tensors, including magnetization ...

Zahn, Markus, 1946-

211

Transmission Services WIST Task Force Dynamic Transfer Capability...  

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

Force Dynamic Transfer Capability Report - Phase I BPA is an active participant in the Wind Integration Study Team (WIST), especially the Task Force looking at DTC study...

212

China's Evolving Defense Economy: A PLA Ground Force Perspective  

E-Print Network [OSTI]

s Evolving Defense Economy: A PLA Ground Force PerspectivePeoples Liberation Army (PLA) doctrinal developments,modernization of the PLA ground forces have incrementally

COOPER, Cortez A.

2013-01-01T23:59:59.000Z

213

Zipping mechanism for force-generation by growing filament bundles  

E-Print Network [OSTI]

We investigate the force generation by polymerizing bundles of filaments, which form because of short-range attractive filament interactions. We show that bundles can generate forces by a zipping mechanism, which is not limited by buckling and operates in the fully buckled state. The critical zipping force, i.e. the maximal force that a bundle can generate, is given by the adhesive energy gained during bundle formation. For opposing forces larger than the critical zipping force, bundles undergo a force-induced unbinding transition. For larger bundles, the critical zipping force depends on the initial configuration of the bundles. Our results are corroborated by Monte Carlo simulations.

Torsten Kuehne; Reinhard Lipowsky; Jan Kierfeld

2011-03-02T23:59:59.000Z

214

Dilution and resonance-enhanced repulsion in nonequilibrium fluctuation forces  

E-Print Network [OSTI]

In equilibrium, forces induced by fluctuations of the electromagnetic field between electrically polarizable objects (microscopic or macroscopic) in vacuum are generically attractive. The force may, however, become repulsive ...

Bimonte, Giuseppe

215

Federal Task Force Sends Recommendations to President on Fostering...  

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

Task Force Sends Recommendations to President on Fostering Clean Coal Technology Federal Task Force Sends Recommendations to President on Fostering Clean Coal Technology August 12,...

216

Radiative forcing in the ACCMIP historical and future climate simulations  

SciTech Connect (OSTI)

The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) examined the short-lived drivers of climate change in current climate models. Here we evaluate the 10 ACCMIP models that included aerosols, 8 of which also participated in the Coupled Model Intercomparison Project phase 5 (CMIP5). The models reproduce present-day total aerosol optical depth (AOD) relatively well, though many are biased low. Contributions from individual aerosol components are quite different, however, and most models underestimate east Asian AOD. The models capture most 1980-2000 AOD trends well, but underpredict increases over the Yellow/Eastern Sea. They strongly underestimate absorbing AOD in many regions. We examine both the direct radiative forcing (RF) and the forcing including rapid adjustments (effective radiative forcing; ERF, including direct and indirect effects). The models all-sky 1850 to 2000 global mean annual average total aerosol RF is (mean; range) ?0.26Wm?2; ?0.06 to ?0.49Wm?2. Screening based on model skill in capturing observed AOD yields a best estimate of ?0.42Wm?2; ?0.33 to ?0.50Wm?2, including adjustment for missing aerosol components in some models. Many ACCMIP and CMIP5 models appear to produce substantially smaller aerosol RF than this best estimate. Climate feedbacks contribute substantially (35 to ?58 %) to modeled historical aerosol RF. The 1850 to 2000 aerosol ERF is ?1.17Wm?2; ?0.71 to ?1.44Wm?2. Thus adjustments, including clouds, typically cause greater forcing than direct RF. Despite this, the multi-model spread relative to the mean is typically the same for ERF as it is for RF, or even smaller, over areas with substantial forcing. The largest 1850 to 2000 negative aerosol RF and ERF values are over and near Europe, south and east Asia and North America. ERF, however, is positive over the Sahara, the Karakoram, high Southern latitudes and especially the Arctic. Global aerosol RF peaks in most models around 1980, declining thereafter with only weak sensitivity to the Representative Concentration Pathway (RCP). One model, however, projects approximately stable RF levels, while two show increasingly negative RF due to nitrate (not included in most models). Aerosol ERF, in contrast, becomes more negative during 1980 to 2000. During this period, increased Asian emissions appear to have a larger impact on aerosol ERF than European and North American decreases due to their being upwind of the large, relatively pristine Pacific Ocean. There is no clear relationship between historical aerosol ERF and climate sensitivity in the CMIP5 subset of ACCMIP models. In the ACCMIP/CMIP5 models, historical aerosol ERF of about ?0.8 to ?1.5Wm?2 is most consistent with observed historical warming. Aerosol ERF masks a large portion of greenhouse forcing during the late 20th and early 21st century at the global scale. Regionally, aerosol ERF is so large that net forcing is negative over most industrialized and biomass burning regions through 1980, but remains strongly negative only over east and southeast Asia by 2000. Net forcing is strongly positive by 1980 over most deserts, the Arctic, Australia, and most tropical oceans. Both the magnitude of and area covered by positive forcing expand steadily thereafter.

Shindell, Drew; Lamarque, J.-F.; Schulz, M.; Flanner, M. G.; Jiao, C.; Chin, Mian; Young, P. J.; Lee, Y. H.; Rotstayn, Leon; Mahowald, N. M.; Milly, G.; Faluvegi, G.; Balkanski, Y.; Collins, W. J.; Conley, Andrew; Dalsoren, S.; Easter, Richard C.; Ghan, Steven J.; Horowitz, L.; Liu, Xiaohong; Myhre, G.; Nagashima, T.; Naik, Vaishali; Rumbold, S.; Skeie, R. B.; Sudo, K.; Szopa, S.; Takemura, T.; Voulgarakis, A.; Yoon, Jin-Ho; Lo, Fiona

2013-03-15T23:59:59.000Z

217

Resonant detection of axion mediated forces with Nuclear Magnetic Resonance  

E-Print Network [OSTI]

We describe a method based on precision magnetometry that can extend the search for axion-mediated spin-dependent forces by several orders of magnitude. By combining techniques used in nuclear magnetic resonance and short-distance tests of gravity, our approach can substantially improve upon current experimental limits set by astrophysics, and probe deep into the theoretically interesting regime for the Peccei-Quinn (PQ) axion. Our method is sensitive to PQ axion decay constants between 10^9 and 10^12 GeV or axion masses between 10^-6 and 10^-3 eV, independent of the cosmic axion abundance.

Asimina Arvanitaki; Andrew A. Geraci

2014-03-05T23:59:59.000Z

218

Spray bottle apparatus with force multiply pistons  

DOE Patents [OSTI]

The present invention comprises a spray bottle in which the pressure resulting from the gripping force applied by the user is amplified and this increased pressure used in generating a spray such as an aerosol or fluid stream. In its preferred embodiment, the invention includes a high pressure chamber and a corresponding piston which is operative for driving fluid out of this chamber at high pressure through a spray nozzle and a low pressure chamber and corresponding piston which is acted upon by the hydraulic pressure within the bottle resulting from the gripping force. The low pressure chamber and piston are of larger size than the high pressure chamber and piston. The pistons are rigidly connected so that the force created by the pressure acting on the piston in the low pressure chamber is transmitted to the piston in the high pressure chamber where it is applied over a more limited area thereby generating greater hydraulic pressure for use in forming the spray.

Eschbach, Eugene A. (Richland, WA)

1992-01-01T23:59:59.000Z

219

Trapping atoms using nanoscale quantum vacuum forces  

E-Print Network [OSTI]

Quantum vacuum forces dictate the interaction between individual atoms and dielectric surfaces at nanoscale distances. For example, their large strengths typically overwhelm externally applied forces, which makes it challenging to controllably interface cold atoms with nearby nanophotonic systems. Here, we show that it is possible to tailor the vacuum forces themselves to provide strong trapping potentials. The trapping scheme takes advantage of the attractive ground state potential and adiabatic dressing with an excited state whose potential is engineered to be resonantly enhanced and repulsive. This procedure yields a strong metastable trap, with the fraction of excited state population scaling inversely with the quality factor of the resonance of the dielectric structure. We analyze realistic limitations to the trap lifetime and discuss possible applications that might emerge from the large trap depths and nanoscale confinement.

D. E. Chang; K. Sinha; J. M. Taylor; H. J. Kimble

2013-10-22T23:59:59.000Z

220

Giant vacuum forces via transmission lines  

E-Print Network [OSTI]

Quantum electromagnetic fluctuations induce forces between neutral particles, known as the van der Waals (vdW) and Casimir interactions. These fundamental forces, mediated by virtual photons from the vacuum, play an important role in basic physics and chemistry, and in emerging technologies involving, e.g. micro-electromechanical systems or quantum information processing. Here we show that these interactions can be enhanced by many orders of magnitude upon changing the character of the mediating vacuum-modes. By considering two polarizable particles in the vicinity of any standard electric transmission line, along which photons can propagate in one dimension (1d), we find a much stronger and longer-range interaction than in free-space. This enhancement may have profound implications on many-particle and bulk systems, and impact the quantum technologies mentioned above. The predicted giant vacuum force is estimated to be measurable in a coplanar waveguide line.

Ephraim Shahmoon; Igor Mazets; Gershon Kurizki

2014-07-23T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Measurement of Dynamical Forces between Deformable Drops Using the Atomic Force Microscope. I. Theory  

E-Print Network [OSTI]

effects of electrical double layer repulsion between oil drops charged by adsorbed surfactant mainly to hydrodynamic lubrication forces. 1. Introduction The atomic force microscope (AFM) has long, such as the interaction between rigid probe particles and oil drops1-4 or between a particle and a bubble.5

Chan, Derek Y C

222

General Multiobjective Force Field Optimization Framework, with Application to Reactive Force Fields for Silicon Carbide  

E-Print Network [OSTI]

Fields for Silicon Carbide Andres Jaramillo-Botero,* Saber Naserifar, and William A. Goddard, III: (1) the ReaxFF reactive force field for modeling the adiabatic reactive dynamics of silicon carbide specific force field parameters for tripod metal templates, tripodMO(CO)3, using the root mean square

Goddard III, William A.

223

Estimation of Contact Forces using a Virtual Force Sensor Emanuele Magrini Fabrizio Flacco Alessandro De Luca  

E-Print Network [OSTI]

the exchanged Cartesian forces; 4) control the robot to react according to a desired behavior. Different model Alessandro De Luca Abstract-- Physical human-robot collaboration is character- ized by a suitable exchange of contact forces between human and robot, which can occur in general at any point along the robot structure

De Luca, Alessandro

224

Steady-State Flow-Force Compensation in a Hydraulic Spool Valve  

E-Print Network [OSTI]

A high-speed jet flowing inside of a partially-open hydraulic valve is accompanied by a reaction force, also referred to as flow force. The nature of this force has remained a mystery despite an extensive research effort spanning many decades. The momentum theory on the flow force by Lee and Blackburn (1952) explains the origin of the flow force and offers a design solution to shape the valve spool as a turbine bucket. It provides a model to calculate the compensated flow force as well. This paper shows that the model applies to a different flow case due to incorrect assumptions made. A corrected equation is presented based on a detailed analysis of the static-pressure distribution in the valve cavity as well as on a literature review of pressure loss in diffusers and nozzles. The new equation is based on the compensation taking place upstream of the valve orifice, not downstream as assumed by the momentum theory. The new model can be applied to chamfers or notches on the valve spool without the need to machi...

Lugowski, Jan

2013-01-01T23:59:59.000Z

225

NON-DOUBLE-COUPLE EARTHQUAKES: NET FORCES AND UNCERTAINTIES  

E-Print Network [OSTI]

NON-DOUBLE-COUPLE EARTHQUAKES: NET FORCES AND UNCERTAINTIES G.R. Foulger, B.R. Julian University-980) to include net forces in the mechanisms. Net forces are theoretically required to describe earthquakes) waves cannot resolve sources such as vertical dipoles. When source mechanisms include net forces, even

Foulger, G. R.

226

Galileon forces in the Solar System  

E-Print Network [OSTI]

We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from infrared modifications of General Relativity. In particular, we attempt to solve -- within the most general flat spacetime galileon model -- the scalar force law between well separated bodies located well within the Vainshtein radius of the Sun. To this end, we derive the exact static Green's function of the galileon wave equation linearized about the background field generated by the Sun, for the minimal cubic and maximally quartic galileon theories, and then introduce a method to compute the general leading order force law perturbatively away from these limits. We also show that the same nonlinearities which produce the Vainshtein screening effect present obstacles to an analytic calculation of the galileon forces between closely bound systems within the solar system, such as that of the Earth and Moon. Within the test mass approximation, we deduce that a large enough quartic galileon interaction would suppress the effect on planetary perihelion precession below the level detectable by even the next-generation experiments.

Melinda Andrews; Yi-Zen Chu; Mark Trodden

2013-10-14T23:59:59.000Z

227

Strategic forces: Future requirements and options  

SciTech Connect (OSTI)

In the wake of the collapse of the Warsaw Pact and the apparent ending of the Cold War, there have been renewed calls for radical cuts in US strategic forces to levels far below the 10,000 or so warheads allowed each side under the current START proposal. Since it now appears that NATO for the first time will have the capability to defeat a Soviet conventional attack without the necessity of threatening to resort to nuclear weapons, this should pave the way for the rethinking of US strategy and the reduction of US strategic weapons requirements. In this new environment, it seems plausible that, with a modification of the Flexible Response doctrine to forego attempts to disarm the Soviet Union, deterrence could be maintained with 1500 or so survivable strategic weapons. With a new strategy that confined US strategic weapons to the role of deterring the use of nuclear weapons by other countries, a survivable force of about 500 weapons would seem sufficient. With this premise, the implications for the US strategic force structure are examined for two cases: a treaty that allows each side 3000 warheads and one that allows each side 1000 warheads. In Part 1 of this paper, the weapons requirements for deterrence are examined in light of recent changes in the geopolitical environment. In Part 2, it is assumed that the President and Congress have decided that deep cuts in strategic forces are acceptable. 128 refs., 12 figs., 12 tabs. (JF)

Speed, R.D.

1990-11-01T23:59:59.000Z

228

Yangtze Patrol: American Naval Forces in China  

E-Print Network [OSTI]

Yangtze Patrol: American Naval Forces in China A Selected, Partially-Annotated Bibliography literature of the United States Navy in China. mvh #12;"Like Chimneys in Summer" The thousands of men who served on the China Station before World War II have been all but forgotten, except in the mythology

229

Academic Integrity Task Force Report Executive Summary  

E-Print Network [OSTI]

. For a more comprehensive report of the findings as well as faculty suggestions for maintaining integrity1 Academic Integrity Task Force Report Executive Summary 11/22/11 INTRODUCTION CHARGE: To determine whether there is an issue with academic integrity at UF and, if so, to determine how widespread

Roy, Subrata

230

Actin Polymerization: Forcing Flat Faces Forward  

E-Print Network [OSTI]

Actin Polymerization: Forcing Flat Faces Forward Arpita Upadhyaya1 and Alexander van Oudenaarden2 Actin polymerization has been shown to be sufficient to propel curved objects, for example beads polymerization forms the basis of numerous forms of cell motility. Actin is thought to polymerize at the leading

van Oudenaarden, Alexander

231

Characterization of acoustically forced swirl flame dynamics  

E-Print Network [OSTI]

of the flame to acoustic excitation is required. This study presents an analysis of phase-locked OH PLIF images of acoustically excited swirl flames, to identify the key controlling physical processes and qualitatively discuss, and whose relative significance depends upon forcing frequency, amplitude of excitation, and flame

Lieuwen, Timothy C.

232

REPORT OF THE DARK ENERGY TASK FORCE  

E-Print Network [OSTI]

REPORT OF THE DARK ENERGY TASK FORCE Andreas Albrecht, University of California, Davis Gary. Suntzeff, Texas A&M University Dark energy appears to be the dominant component of the physical Universe a full understanding of the cosmic acceleration. For these reasons, the nature of dark energy ranks among

Hu, Wayne

233

Columbia University Network Integration Task Force  

E-Print Network [OSTI]

Columbia University Network Integration Task Force Final Report II 30 January 1992 #12;1 TOWARDS A COMMON ADMINISTRATIVE AND ACADEMIC NETWORK AT COLUMBIA UNIVERSITY Columbia University's Administrative or terminal. 1.2. Executive Summary This report examines Columbia University's current academic

Yang, Junfeng

234

Free energy landscape and characteristic forces for the initiation of DNA unzipping  

E-Print Network [OSTI]

DNA unzipping, the separation of its double helix into single strands, is crucial in modulating a host of genetic processes. Although the large-scale separation of double-stranded DNA has been studied with a variety of theoretical and experimental techniques, the minute details of the very first steps of unzipping are still unclear. Here, we use atomistic molecular dynamics (MD) simulations, coarse-grained simulations and a statistical-mechanical model to study the initiation of DNA unzipping by an external force. The calculation of the potential of mean force profiles for the initial separation of the first few terminal base pairs in a DNA oligomer reveal that forces ranging between 130 and 230 pN are needed to disrupt the first base pair, values of an order of magnitude larger than those needed to disrupt base pairs in partially unzipped DNA. The force peak has an "echo," of approximately 50 pN, at the distance that unzips the second base pair. We show that the high peak needed to initiate unzipping derives from a free energy basin that is distinct from the basins of subsequent base pairs because of entropic contributions and we highlight the microscopic origin of the peak. Our results suggest a new window of exploration for single molecule experiments.

Ahmet Mentes; Ana Maria Florescu; Elizabeth Brunk; Jeff Wereszczynski; Marc Joyeux; Ioan Andricioaei

2015-01-27T23:59:59.000Z

235

Friction forces on phase transition fronts  

SciTech Connect (OSTI)

In cosmological first-order phase transitions, the microscopic interaction of the phase transition fronts with non-equilibrium plasma particles manifests itself macroscopically as friction forces. In general, it is a nontrivial problem to compute these forces, and only two limits have been studied, namely, that of very slow walls and, more recently, ultra-relativistic walls which run away. In this paper we consider ultra-relativistic velocities and show that stationary solutions still exist when the parameters allow the existence of runaway walls. Hence, we discuss the necessary and sufficient conditions for the fronts to actually run away. We also propose a phenomenological model for the friction, which interpolates between the non-relativistic and ultra-relativistic values. Thus, the friction depends on two friction coefficients which can be calculated for specific models. We then study the velocity of phase transition fronts as a function of the friction parameters, the thermodynamic parameters, and the amount of supercooling.

Mgevand, Ariel, E-mail: megevand@mdp.edu.ar [IFIMAR (CONICETUNMdP), Departamento de Fsica, Facultad de Ciencias Exactas y Naturales, UNMdP, Den Funes 3350, (7600) Mar del Plata (Argentina)

2013-07-01T23:59:59.000Z

236

Agencies Approve Bacteria TMDL Task Force Recommendations  

E-Print Network [OSTI]

their agencies to update their TMDL guidance documents to reflect these recommendations. They also authorized establishing a multi-agency bacteria TMDL work group to examine the research and development needs identified in the task force report. Both TCEQ... activities needed to strengthen the scientific tools available for TMDL and I-Plan development. The report and related documents are available at twri.tamu.edu/bacteriatmdl/. Tier 1 Analysis (T1) (one-year) Required for all bacteria TMDLs. ? Form TMDL...

Wythe, Kathy

2007-01-01T23:59:59.000Z

237

Exploring medium effects on the nuclear force  

SciTech Connect (OSTI)

This STI product contains a description of results from theoretical studies in nuclear physics. The goal is a systematic investigation of the nuclear force in the nuclear medium. The problems addressed are: density-dependent effective interactions as seen through proton-nucleus reactions, nuclear matter with unequal densities of protons and neutrons, applications to asymmetric nuclei through predictions of neutron radii and neutron skins.

F. Sammarruca

2004-04-18T23:59:59.000Z

238

Squeeze bottle apparatus with force multiplying pistons  

DOE Patents [OSTI]

The present invention comprises a spray bottle in which the pressure resulting from the gripping force applied by the user is amplified and this increased pressure used in generating a spray such as an aerosol or fluid stream. In its preferred embodiment, the invention includes a high pressure chamber and a corresponding piston which is operative for driving fluid out of this chamber at high pressure through a spray nozzle and a low pressure chamber, and a corresponding piston which is acted upon by the hydraulic pressure within the bottle resulting from the gripping force. The low pressure chamber and piston are of larger size than the high pressure chamber and piston. The pistons are rigidly connected so that the force created by the pressure acting on the piston in the low pressure chamber is transmitted to the piston in the high pressure chamber where it is applied over a more limited area, thereby generating greater hydraulic pressure for use in forming the spray.

Moss, Owen R. (Cary, NC); Gordon, Norman R. (Kennewick, WA); DeFord, Henry S. (Kennewick, WA); Eschbach, Eugene A. (Richland, WA)

1994-01-01T23:59:59.000Z

239

Spacetime approach to force-free magnetospheres  

E-Print Network [OSTI]

Force-Free Electrodynamics (FFE) describes magnetically dominated relativistic plasma via non-linear equations for the electromagnetic field alone. Such plasma is thought to play a key role in the physics of pulsars and active black holes. Despite its simple covariant formulation, FFE has primarily been studied in 3+1 frameworks, where spacetime is split into space and time. In this article we systematically develop the theory of force-free magnetospheres taking a spacetime perspective. Using a suite of spacetime tools and techniques (notably exterior calculus) we cover 1) the basics of the theory, 2) exact solutions that demonstrate the extraction and transport of the rotational energy of a compact object (in the case of a black hole, the Blandford-Znajek mechanism), 3) the behavior of current sheets, 4) the general theory of stationary, axisymmetric magnetospheres and 5) general properties of pulsar and black hole magnetospheres. We thereby synthesize, clarify and generalize known aspects of the physics of force-free magnetospheres, while also introducing several new results.

Samuel E. Gralla; Ted Jacobson

2014-10-15T23:59:59.000Z

240

Improved Precision Measurement of the Casimir Force Using Gold Surfaces  

E-Print Network [OSTI]

We report an improved precision measurement of the Casimir force using metallic gold surfaces. The force is measured between a large gold coated sphere and flat plate using an Atomic Force Microscope. The use of gold surfaces removes some theoretical uncertainties in the interpretation of the measurement. The forces are also measured at smaller surface separations. The complete dielectric spectrum of the metal is used in the comparison of theory to the experiment. The average statistical precision remains at the same 1% of the forces measured at the closest separation. These results should lead to the development of stronger constraints on hypothetical forces.

B. W. Harris; F. Chen; U. Mohideen

2000-05-21T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Repulsive and restoring Casimir forces with left-handed materials  

E-Print Network [OSTI]

We investigate repulsive Casimir force between slabs containing left-handed materials with controllable electromagnetic properties. The sign of Casimir force is determined by the electric and magnetic properties of the materials, and it is shown that the formation of the repulsive force is related to the wave impedances of two slabs. The sign change of the Casimir force as a function of the distance is studied. Special emphasis is put on the restoring Casimir force which may be found to exist between perfectly conducting material and metamaterial slabs. This restoring force is a natural power for the system oscillation in vacuum and also can be used for system stabilization.

Yaping Yang; Ran Zeng; Shutian Liu; Hong Chen; Shiyao Zhu

2008-03-24T23:59:59.000Z

242

Stall force of polymerizing microtubules and filament bundles  

E-Print Network [OSTI]

We investigate stall force and polymerization kinetics of rigid protofilaments in a microtubule or interacting filaments in bundles under an external load force in the framework of a discrete growth model. We introduce the concecpt of polymerization cycles to describe the stochastic growth kinetics, which allows us to derive an exact expression for the stall force. We find that the stall force is independent of ensemble geometry and load distribution. Furthermore, the stall force is proportional to the number of filaments and increases linearly with the strength of lateral filament interactions. These results are corroborated by simulations, which also show a strong influence of ensemble geometry on growth kinetics below the stall force.

Jaroslaw Krawczyk; Jan Kierfeld

2011-02-10T23:59:59.000Z

243

Molecular force spectroscopy of homophilic nectin-1 interactions  

SciTech Connect (OSTI)

Nectins are Ca{sup 2+} independent cell adhesion molecules localizing at the cadherin based adherens junctions. In this study, we have used atomic force microscopy to study interaction of a chimera of extra cellular fragment of nectin-1 and Fc of human IgG (nef-1) with wild type L-fibroblasts that express endogenous nectin-1 to elucidate the biophysical characteristics of homophilic nectin-1 trans-interactions at the level of single molecule. Bond strength distribution revealed three distinct bound states (or configurations) of trans-interactions between paired nectins, where each bound state has a unique unstressed off-rate and reactive compliance. Kinetic analysis of force-dependent off-rate of the bound state involving trans-interacting V-V domains between paired nectin-1 (unstressed off-rate {approx}1.465 {+-} 0.779 s{sup -1}, reactive compliance {approx}0.143 {+-} 0.072 nm) was found to be closest to E-cadherin, indicating that V-V domain trans-interactions are probably necessary to initiate and promote adhesions of E-cadherin at adherens junctions (AJs)

Vedula, Sri Ram Krishna [Division of Bioengineering and Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576 (Singapore); Lim, T.S. [Bioinformatics Institute (Singapore); NUS Graduate School for Integrative Sciences and Engineering (Singapore); Hui Shi [Division of Bioengineering and Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576 (Singapore); Kausalya, P. Jaya [Institute of Molecular and Cell Biology (Singapore); Lane, E. Birgitte [Institute of Medical Biology (Singapore); Rajagopal, Gunaretnam [Bioinformatics Institute (Singapore); Hunziker, Walter [Institute of Molecular and Cell Biology (Singapore); Lim, C.T. [Division of Bioengineering and Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576 (Singapore)], E-mail: ctlim@nus.edu.sg

2007-11-03T23:59:59.000Z

244

Dynamics of Airfoil Separation Control Using Zero-Net Mass-Flux Forcing  

E-Print Network [OSTI]

Dynamics of Airfoil Separation Control Using Zero-Net Mass-Flux Forcing Reni Raju and Rajat Mittal, Gainesville, Florida 32611 DOI: 10.2514/1.37147 Zero-net mass-flux jet based control of flow separation over using zero-net mass-flux actuation can either control/delay boundary layer separation or lead to global

Mittal, Rajat

245

Forced oil-water displacement and spontaneous countercurrent imbibition are the crucial mechanisms of secondary oil  

E-Print Network [OSTI]

Abstract Forced oil-water displacement and spontaneous countercurrent imbibition are the crucial mechanisms of secondary oil recovery. Classical mathematical models of both these unsteady flows are based on the fundamental assumption of local phase equilibrium. Thus, the water and oil flows are locally redistributed

Patzek, Tadeusz W.

246

The modeling and characterization of a Lorentz-force actuator for needle-free injection  

E-Print Network [OSTI]

The BioInstrumentation Laboratory at MIT developed a needle-free injector that is driven by a Lorentz-force actuator. The current model was able to generate pressures of up to 20 MPa in order to drive a jet of water based ...

Mendoza, Jonathan Michael

2011-01-01T23:59:59.000Z

247

Free energy landscape and characteristic forces for the initiation of DNA unzipping  

E-Print Network [OSTI]

DNA unzipping, the separation of its double helix into single strands, is crucial in modulating a host of genetic processes. Although the large-scale separation of double-stranded DNA has been studied with a variety of theoretical and experimental techniques, the minute details of the very first steps of unzipping are still unclear. Here, we use atomistic molecular dynamics (MD) simulations, coarse-grained simulations and a statistical-mechanical model to study the initiation of DNA unzipping by an external force. The calculation of the potential of mean force profiles for the initial separation of the first few terminal base pairs in a DNA oligomer reveal that forces ranging between 130 and 230 pN are needed to disrupt the first base pair, values of an order of magnitude larger than those needed to disrupt base pairs in partially unzipped DNA. The force peak has an "echo," of approximately 50 pN, at the distance that unzips the second base pair. We show that the high peak needed to initiate unzipping derives...

Mentes, Ahmet; Brunk, Elizabeth; Wereszczynski, Jeff; Joyeux, Marc; Andricioaei, Ioan

2015-01-01T23:59:59.000Z

248

Self-Assembly of Flat Micro Components by Capillary Forces and Shape Recognition  

E-Print Network [OSTI]

Self-Assembly of Flat Micro Components by Capillary Forces and Shape Recognition J. Fang, S. Liang, K. Wang, X. Xiong, K. F. Böhringer* This paper summarizes our recent reports on self-assembly of flat micro components based on two major mechanisms: capillary-driven self-assembly and feature

249

Dynamic Balance Force Control for Compliant Humanoid Robots Benjamin J. Stephens, Christopher G. Atkeson  

E-Print Network [OSTI]

-controlled humanoid robot. I. INTRODUCTION Humanoid robots must operate in complex environments while interacting a robot with stiff joint position control and a known environment, the most common approach to balance), for determining full body joint torques based on desired COM motion and contact forces for compliant humanoid

250

A fast solver for the Stokes equations with distributed forces in complex geometries 1  

E-Print Network [OSTI]

A fast solver for the Stokes equations with distributed forces in complex geometries 1 George Biros geometries in a black-box fashion; (2) it is second order accurate; and (3) it has optimal algorithmic complexity. Our approach, to which we refer as the Embedded Boundary Integral method, is based on Anita Mayo

Mohri, Mehryar

251

Combining rails and anchors with laser forcing for selective manipulation within 2D droplet arrays  

E-Print Network [OSTI]

demonstrate the combination of a rails and anchors microfluidic system with laser forcing to enable to anchor holes made in the base of a microfluidic channel, enabling the creation of arrays their merging and a chemical reaction to take place. Finally by adding guiding rails within the microfluidic

Boyer, Edmond

252

JP2.3 CLOUD RADIATIVE HEATING RATE FORCING FROM PROFILES OF RETRIEVED ARCTIC CLOUD MICROPHYSICS  

E-Print Network [OSTI]

JP2.3 CLOUD RADIATIVE HEATING RATE FORCING FROM PROFILES OF RETRIEVED ARCTIC CLOUD MICROPHYSICS surface. In 1997-1998, a large multi-agency effort made the Surface Heat Budget of the Arctic (SHEBA with the ice pack in the Beaufort and Chukchi Seas for one year. Surface-based remote sensors generated

Shupe, Matthew

253

Blade-forced vibration effects in turbomachinery rotor-stator interaction  

E-Print Network [OSTI]

This thesis presents the effects of blade-forced vibration in turbomachinery rotor-stator interaction. A quasi-three-dimensional multi-row analysis, based on an Euler/Navier-Stokes solver and a parallel computational algorithm, was used to simulate...

Collard, Joseph Eugene

2000-01-01T23:59:59.000Z

254

Forced cooling of underground electric power transmission lines : design manual  

E-Print Network [OSTI]

The methodology utilized for the design of a forced-cooled pipe-type underground transmission system is presented. The material is divided into three major parts: (1) The Forced-cooled Pipe-Type Underground Transmission ...

Brown, Jay A.

1978-01-01T23:59:59.000Z

255

Signs and Polarized/Magnetic versions of the Casimir Forces  

E-Print Network [OSTI]

We consider versions of the Casimir effect where the force can be controlled by changing the angle between two Casimir ``plates'' or the temperature of two nearby rings. We also present simple arguments for the sign of Casimir forces.

S. Nussinov

1995-09-05T23:59:59.000Z

256

Gregory H. Friedman: Before the Subcommittee on Strategic Forces...  

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

Strategic Forces Committee on Armed Services U.S. House of Representatives Gregory H. Friedman: Before the Subcommittee on Strategic Forces Committee on Armed Services U.S. House...

257

Air Force Enhanced Use Lease | Department of Energy  

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

Air Force Enhanced Use Lease Air Force Enhanced Use Lease Presentation-given at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting-discusses the U.S. Air...

258

Aerodynamic Forces on Truck Models, Including Two Trucks in Tandem  

E-Print Network [OSTI]

rear-edge shaping on the aerodynamic drag of bluff vehiclesOF CALIFORNIA, BERKELEY Aerodynamic Forces on Truck Models,TRANSIT AND HIGHWAYS Aerodynamic Forces on Truck Models,

Hammache, Mustapha; Michaelian, Mark; Browand, Fred

2001-01-01T23:59:59.000Z

259

Air Force Achieves Fuel Efficiency through Industry Best Practices...  

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

Air Force Achieves Fuel Efficiency through Industry Best Practices Air Force Achieves Fuel Efficiency through Industry Best Practices Fact sheet offers an overview of the U.S. Air...

260

Microstructure effects for Casimir forces in chiral metamaterials  

E-Print Network [OSTI]

We examine a recent prediction for the chirality dependence of the Casimir force in chiral metamaterials by numerical computation of the forces between the exact microstructures, rather than homogeneous approximations. ...

Johnson, Steven G.

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

UNITED STATES AIR FORCE OUTSIDE THE NATIONAL CAPITAL REGION  

E-Print Network [OSTI]

program in order to reduce Federal employee's contribution to traffic congestion and air pollutionUNITED STATES AIR FORCE OUTSIDE THE NATIONAL CAPITAL REGION PUBLIC TRANSPORTATION BENEFIT PROGRAM): ____________ City (Residence): __________________________State: _______________ Zip Code: ________________ Air Force

262

Atomic Force and Scanning Electron Microscopy of Atmospheric Particles  

E-Print Network [OSTI]

conducted so as to characterize atmospheric aerosols from anthropogenic (pollution) and natural (sea saltAtomic Force and Scanning Electron Microscopy of Atmospheric Particles ZAHAVA BARKAY,1 * AMIT 69978, Israel KEY WORDS atmospheric aerosols; atomic force microscopy; scanning electron microscopy

Shapira, Yoram

263

REPORT OF THE TASK FORCE ON NUCLEAR NONPROLIFERATION  

Broader source: Energy.gov [DOE]

The Secretary of Energy on December 20, 2013 established the Secretary of Energy Advisory Board (SEAB) Task Force on Nuclear Nonproliferation and charged the Task Force to advise the DOE on future areas of emphasis for its nuclear nonproliferation activities

264

Multi-dimensional modelling of electrostatic force distance curve over dielectric surface: Influence of tip geometry and correlation with experiment  

SciTech Connect (OSTI)

Electric Force-Distance Curves (EFDC) is one of the ways whereby electrical charges trapped at the surface of dielectric materials can be probed. To reach a quantitative analysis of stored charge quantities, measurements using an Atomic Force Microscope (AFM) must go with an appropriate simulation of electrostatic forces at play in the method. This is the objective of this work, where simulation results for the electrostatic force between an AFM sensor and the dielectric surface are presented for different bias voltages on the tip. The aim is to analyse force-distance curves modification induced by electrostatic charges. The sensor is composed by a cantilever supporting a pyramidal tip terminated by a spherical apex. The contribution to force from cantilever is neglected here. A model of force curve has been developed using the Finite Volume Method. The scheme is based on the Polynomial Reconstruction OperatorPRO-scheme. First results of the computation of electrostatic force for different tipsample distances (from 0 to 600?nm) and for different DC voltages applied to the tip (6 to 20?V) are shown and compared with experimental data in order to validate our approach.

Boularas, A., E-mail: boularas@laplace.univ-tlse.fr; Baudoin, F.; Villeneuve-Faure, C. [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Universit de Toulouse, UPS, INPT, 118 route de Narbonne, 31062 Toulouse cedex 9 (France); Clain, S. [Universidade do Minho, Centro de Matemtica, Campus de Gualtar, 4710 - 057 Braga (Portugal); Universit Paul Sabatier, Institut de Mathmatiques de Toulouse, 31062 Toulouse (France); Teyssedre, G. [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Universit de Toulouse, UPS, INPT, 118 route de Narbonne, 31062 Toulouse cedex 9 (France); CNRS, LAPLACE, F-31071 Toulouse (France)

2014-08-28T23:59:59.000Z

265

Role of seepage forces on hydraulic fracturing and failure patterns  

E-Print Network [OSTI]

Role of seepage forces on hydraulic fracturing and failure patterns Alexander Rozhko Thesis September 2007 #12;ii Role of seepage forces on hydraulic fracturing and failure patterns Abstract. The mechanical role of seepage forces on hydraulic fracturing and failure patterns was studied both

Paris-Sud XI, Université de

266

Radiative forcing from aircraft NOx emissions: Mechanisms and seasonal dependence  

E-Print Network [OSTI]

dependence. The long-term globally integrated annual mean net forcing calculated here is approximately zero, related to the annual cycle in photochemistry; the O3 radiative forcing calculations also have a seasonal, although earlier work suggests a small net positive forcing. The model design (e.g., upper tropospheric

267

Probing polymerization forces by using actin-propelled lipid vesicles  

E-Print Network [OSTI]

Probing polymerization forces by using actin-propelled lipid vesicles Arpita Upadhyaya, Jeffrey R) Actin polymerization provides a powerful propulsion force for numerous types of cell motility. Although the polymerization forces quantitatively, we introduce an experimental system in which lipid vesicles coated

van Oudenaarden, Alexander

268

Heat release response of acoustically forced turbulent premixed flamesrole  

E-Print Network [OSTI]

Heat release response of acoustically forced turbulent premixed flamesrole of kinematic surface to coherent forcing and turbulent fluctuations are coupled even at linear order in coherent forcing amplitude, ea, due to flame propagation (kinematic restoration). This coupling effectively causes

Lieuwen, Timothy C.

269

CONSERVED INTEGRALS AND ENERGETIC FORCES JAMES R. RICE  

E-Print Network [OSTI]

and the structure of inealstic constitutive relations; they also include some new results on the energetic forcesCONSERVED INTEGRALS AND ENERGETIC FORCES JAMES R. RICE Harvard University, Cambridge, MA 02138, USA ABSTRACT Conserved integrals of the Eshelby type representing energetic forces on dislocations, inclusions

270

Coke cake behavior under compressive forces  

SciTech Connect (OSTI)

The deformation of the coke cake and load on the side wall during pushing were studied using an electric furnace equipped with a movable wall. Coke cake was found to deform in three stages under compressive forces. The coke cake was shortened in the pushing direction in the cake deformation stage, and load was generated on the side walls in the high wall load stage. Secondary cracks in the coke cake were found to prevent load transmission on the wall. The maximum load transmission rate was controlled by adjusting the maximum fluidity and mean reflectance of the blended coal.

Watakabe, S.; Takeda, T.; Itaya, H.; Suginobe, H.

1997-12-31T23:59:59.000Z

271

Weardale Task Force | 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 Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec do BrasilGmbHWeardale Task Force Jump to:

272

Sandia National Laboratories: Air Force Research Laboratory  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0Energy Advanced Nuclear Energy TheASC ContactAir Force

273

136Sn and three body forces  

E-Print Network [OSTI]

New experimental data on 2+ energies of 136,138Sn confirms the trend of lower 2+ excitation energies of even-even tin isotopes with N > 82 compared to those with N 4+)) of these nuclei, simultaneously, apart from one whose matrix elements have been changed empirically to produce mixed seniority states by weakening pairing. We have shown that the experimental result also shows good agreement with the theory in which three body forces have been included in a realistic interaction. The new theoretical results on transition probabilities have been discussed to identify the experimental quantities which will clearly distinguish between different views.

M. Saha Sarkar; S. Sarkar

2014-11-10T23:59:59.000Z

274

ARM - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing)  

SciTech Connect (OSTI)

The constrained variational objective analysis approach described in Zhang and Lin [1997] and Zhang et al. [2001]was used to derive the large-scale single-column/cloud resolving model forcing and evaluation data set from the observational data collected during Midlatitude Continental Convective Clouds Experiment (MC3E), which was conducted during April to June 2011 near the ARM Southern Great Plains (SGP) site. The analysis data cover the period from 00Z 22 April - 21Z 6 June 2011. The forcing data represent an average over the 3 different analysis domains centered at central facility with a diameter of 300 km (standard SGP forcing domain size), 150 km and 75 km, as shown in Figure 1. This is to support modeling studies on various-scale convective systems.

Xie, Shaocheng; McCoy, Renata; Zhang, Yunyan

2012-10-25T23:59:59.000Z

275

Laser interferometry force-feedback sensor for an interfacial force microscope  

DOE Patents [OSTI]

A scanning force microscope is provided with a force-feedback sensor to increase sensitivity and stability in determining interfacial forces between a probe and a sample. The sensor utilizes an interferometry technique that uses a collimated light beam directed onto a deflecting member, comprising a common plate suspended above capacitor electrodes situated on a substrate forming an interference cavity with a probe on the side of the common plate opposite the side suspended above capacitor electrodes. The probe interacts with the surface of the sample and the intensity of the reflected beam is measured and used to determine the change in displacement of the probe to the sample and to control the probe distance relative to the surface of the sample.

Houston, Jack E.; Smith, William L.

2004-04-13T23:59:59.000Z

276

ARM - Midlatitude Continental Convective Clouds - Single Column Model Forcing (xie-scm_forcing)  

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

The constrained variational objective analysis approach described in Zhang and Lin [1997] and Zhang et al. [2001]was used to derive the large-scale single-column/cloud resolving model forcing and evaluation data set from the observational data collected during Midlatitude Continental Convective Clouds Experiment (MC3E), which was conducted during April to June 2011 near the ARM Southern Great Plains (SGP) site. The analysis data cover the period from 00Z 22 April - 21Z 6 June 2011. The forcing data represent an average over the 3 different analysis domains centered at central facility with a diameter of 300 km (standard SGP forcing domain size), 150 km and 75 km, as shown in Figure 1. This is to support modeling studies on various-scale convective systems.

Xie, Shaocheng; McCoy, Renata; Zhang, Yunyan

277

Power-law rheology and mechano-sensing in a cytoskeleton model with forced protein unfolding  

E-Print Network [OSTI]

We describe a model of cytoskeletal mechanics based on the force-induced conformational change of protein cross-links in a stressed polymer network. Slow deformation of simulated networks containing cross-links that undergo repeated, serial domain unfolding leads to an unusual state--with many cross-links accumulating near the critical force for further unfolding. Thermal activation of these links gives rise to power-law rheology resembling the previously unexplained mechanical response of living cells. Moreover, we hypothesize that such protein cross-links function as biochemical mechano-sensors of cytoskeletal deformation.

Brenton D. Hoffman; Gladys Massiera; John C. Crocker

2006-03-18T23:59:59.000Z

278

US Air Force Facility Energy Management Program - How Industry Can Help the Air Force Meet Its Objectives  

E-Print Network [OSTI]

This paper describes the Air Force's facility energy management program including how industry can help the Air Force meet its facility energy objectives. Background information on energy use and energy conservation efforts are presented to give...

Holden, P. C.; Kroop, R. H.

1983-01-01T23:59:59.000Z

279

Force generation by Myosin II Filaments in Compliant Networks  

E-Print Network [OSTI]

Myosin II isoforms with varying mechanochemistry and filament size interact with filamentous actin (F-actin) networks to generate contractile forces in cells. How their properties control force production in environments with varying stiffness is poorly understood. Here, we incorporated literature values for properties of myosin II isoforms into a cross-bridge model. Similar actin gliding speeds and force-velocity curves expected from previous experiments were observed. Motor force output on an elastic load was regulated by two timescales--that of their attachment to F-actin, which varied sharply with the ensemble size, motor duty ratio, and external load, and that of force build up, which scaled with ensemble stall force, gliding speed, and load stiffness. While such regulation did not require force-dependent kinetics, the myosin catch bond produced positive feedback between attachment time and force to trigger switch-like transitions from short attachments and small forces to high force-generating runs at threshold parameter values. Parameters representing skeletal muscle myosin, non-muscle myosin IIB, and non-muscle myosin IIA revealed distinct regimes of behavior respectively: (1) large assemblies of fast, low-duty ratio motors rapidly build stable forces over a large range of environmental stiffness, (2) ensembles of slow, high-duty ratio motors serve as high-affinity cross-links with force build-up times that exceed physiological timescales, and (3) small assemblies of low-duty ratio motors operating at intermediate speeds may respond sharply to changes in mechanical context--at low forces or stiffness, they serve as low affinity cross-links but they can transition to effective force production via the positive feedback mechanism described above. These results reveal how myosin isoform properties may be tuned to produce force and respond to mechanical cues in their environment.

Samantha Stam; Jon Alberts; Margaret L. Gardel; Edwin Munro

2014-07-08T23:59:59.000Z

280

Softening of Granular Packings with Dynamic Forcing  

E-Print Network [OSTI]

We perform numerical simulations of a two-dimensional bidisperse granular packing subjected to both a static confining pressure and a sinusoidal dynamic forcing applied by a wall on one edge of the packing. We measure the response experienced by a wall on the opposite edge of the packing and obtain the resonant frequency of the packing as the static or dynamic pressures are varied. Under increasing static pressure, the resonant frequency increases, indicating a velocity increase of elastic waves propagating through the packing. In contrast, when the dynamic amplitude is increased for fixed static pressure, the resonant frequency decreases, indicating a decrease in the wave velocity. This occurs both for compressional and for shear dynamic forcing, and is in agreement with experimental results. We find that the average contact number $Z_c$ at the resonant frequency decreases with increasing dynamic amplitude, indicating that the elastic softening of the packing is associated with a reduced number of grain-grain contacts through which the elastic waves can travel. We image the excitations created in the packing and show that there are localized disturbances or soft spots that become more prevalent with increasing dynamic amplitude. Our results are in agreement with experiments on glass bead packings and earth materials such as sandstone and granite, and may be relevant to the decrease in elastic wave velocities that has been observed to occur near fault zones after strong earthquakes, in surficial sediments during strong ground motion, and in structures during earthquake excitation.

C. J. Olson Reichhardt; L. M. Lopatina; X. Jia; P. A. Johnson

2014-06-17T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Casimir Friction Force for Moving Harmonic Oscillators  

E-Print Network [OSTI]

Casimir friction is analyzed for a pair of dielectric particles in relative motion. We first adopt a microscopic model for harmonically oscillating particles at finite temperature T moving non-relativistically with constant velocity. We use a statistical-mechanical description where time-dependent correlations are involved. This description is physical and direct, and, in spite of its simplicity, is able to elucidate the essentials of the problem. This treatment elaborates upon, and extends, an earlier theory of ours back in 1992. The energy change Delta E turns out to be finite in general, corresponding to a finite friction force. In the limit of zero temperature the formalism yields, however, Delta E ->0, this being due to our assumption about constant velocity, meaning slowly varying coupling. For couplings varying more rapidly, there will also be a finite friction force at T=0. As second part of our work, we consider the friction problem using time-dependent perturbation theory. The dissipation, basically a second order effect, is obtainable with the use of first order theory, the reason being the absence of cross terms due to uncorrelated phases of eigenstates. The third part of the present paper is to demonstrate explicitly the equivalence of our results with those recently obtained by Barton (2010); this being not a trivial task since the formal results are seemingly quite different from each other.

Johan S. Hye; Iver Brevik

2011-11-21T23:59:59.000Z

282

Spin-Orbit Force from Lattice QCD  

E-Print Network [OSTI]

We present a first attempt to determine nucleon-nucleon potentials in the parity-odd sector, which appear in 1P1, 3P0, 3P1, 3P2-3F2 channels, in Nf=2 lattice QCD simulations. These potentials are constructed from the Nambu-Bethe-Salpeter wave functions for J^P=0^-, 1^- and 2^-, which correspond to A1^-, T1^- and T2^- + E^- representation of the cubic group, respectively. We have found a large and attractive spin-orbit potential VLS(r) in the isospin-triplet channel, which is qualitatively consistent with the phenomenological determination from the experimental scattering phase shifts. The potentials obtained from lattice QCD are used to calculate the scattering phase shifts in 1P1, 3P0, 3P1 and 3P2-3F2 channels. The strong attractive spin-orbit force and a weak repulsive central force in spin-triplet P-wave channels lead to an attraction in the 3P2 channel, which is related to the P-wave neutron paring in neutron stars.

K. Murano; N. Ishii; S. Aoki; T. Doi; T. Hatsuda; Y. Ikeda; T. Inoue; H. Nemura; K. Sasaki

2014-06-19T23:59:59.000Z

283

Fluid Mechanical and Electrical Fluctuation Forces in Colloids  

E-Print Network [OSTI]

Fluctuations in fluid velocity and fluctuations in electric fields may both give rise to forces acting on small particles in colloidal suspensions. Such forces in part determine the thermodynamic stability of the colloid. At the classical statistical thermodynamic level, the fluid velocity and electric field contributions to the forces are comparable in magnitude. When quantum fluctuation effects are taken into account, the electric fluctuation induced van der Waals forces dominate those induced by purely fluid mechanical motions. The physical principles are applied in detail for the case of colloidal particle attraction to the walls of the suspension container and more briefly for the case of forces between colloidal particles.

D. Drosdoff; A. Widom

2004-10-06T23:59:59.000Z

284

Weak and Repulsive Casimir Force in Piston Geometries  

E-Print Network [OSTI]

We study the Casimir force in piston-like geometries semiclassically. The force on the piston is finite and physical, but to leading semiclassical approximation depends strongly on the shape of the surrounding cavity. Whereas this force is attractive for pistons in a parallelepiped with flat cylinder head, for which the semiclassical approximation by periodic orbits is exact, this approximation to the force on the piston vanishes for a semi-cylindrical head and becomes repulsive for a cylinder of circular cross section with a hemispherical head. In leading semiclassical approximation the sign of the force is related to the generalized Maslov index of short periodic orbits between the piston and its casing.

Martin Schaden; Liviu Mateescu

2007-05-23T23:59:59.000Z

285

Liquid contact resonance atomic force microscopy via experimental reconstruction of the hydrodynamic function  

SciTech Connect (OSTI)

We present a method to correct for surface-coupled inertial and viscous fluid loading forces in contact resonance (CR) atomic force microscopy (AFM) experiments performed in liquid. Based on analytical hydrodynamic theory, the method relies on experimental measurements of the AFM cantilever's free resonance peaks near the sample surface. The free resonance frequencies and quality factors in both air and liquid allow reconstruction of a continuous hydrodynamic function that can be used to adjust the CR data in liquid. Validation experiments utilizing thermally excited free and in-contact spectra were performed to assess the accuracy of our approach. Results show that the method recovers the air frequency values within approximately 6%. Knowledge of fluid loading forces allows current CR analysis techniques formulated for use in air and vacuum environments to be applied to liquid environments. Our technique greatly extends the range of measurement environments available to CR-AFM.

Tung, Ryan C., E-mail: ryan.tung@nist.gov; Killgore, Jason P.; Hurley, Donna C. [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States)

2014-06-14T23:59:59.000Z

286

Second-order diffraction forces on an array of vertical cylinders in bichromatic bidirectional waves  

SciTech Connect (OSTI)

A complete second-order solution is presented for the hydrodynamic forces due to the action of bichromatic, bidirectional waves on an array of bottom-mounted, surface-piercing cylinders of arbitrary cross section in water of uniform finite depth. Based on the constant structural cross section, the first-order problem is solved utilizing a two-dimensional Green function approach, while an assisting radiation potential approach is used to obtain the hydrodynamic loads due to the second-order potential. Results are presented which illustrate the influence of wave directionality on the second-order sum and difference frequency hydrodynamic forces on a two-cylinder array. It is found that wave directionality may have a significant influence on the second-order hydrodynamic forces on these arrays and that the assumption of unidirectional waves does not always lead to conservative estimates of the second-order loading.

Vazquez, J.H. [Lamar Univ., Beaumont, TX (United States). Dept. of Civil Engineering; Williams, A.N. [Univ. of Houston, TX (United States). Dept. of Civil and Environmental Engineering

1995-02-01T23:59:59.000Z

287

Bayesian field theoretic reconstruction of bond potential and bond mobility in single molecule force spectroscopy  

E-Print Network [OSTI]

Quantifying the forces between and within macromolecules is a necessary first step in understanding the mechanics of molecular structure, protein folding, and enzyme function and performance. In such macromolecular settings, dynamic single-molecule force spectroscopy (DFS) has been used to distort bonds. The resulting responses, in the form of rupture forces, work applied, and trajectories of displacements, have been used to reconstruct bond potentials. Such approaches often rely on simple parameterizations of one-dimensional bond potentials, assumptions on equilibrium starting states, and/or large amounts of trajectory data. Parametric approaches typically fail at inferring complex-shaped bond potentials with multiple minima, while piecewise estimation may not guarantee smooth results with the appropriate behavior at large distances. Existing techniques, particularly those based on work theorems, also do not address spatial variations in the diffusivity that may arise from spatially inhomogeneous coupling to...

Chang, Joshua C; Chou, Tom

2015-01-01T23:59:59.000Z

288

Acoustic radiation force on a double-layer microsphere by a Gaussian focused beam  

SciTech Connect (OSTI)

A new model for calculating the radiation force on double-layer microsphere is proposed based on the ray acoustics approach. The axial acoustic radiation force resulting from a focused Gaussian beam incident on spherical shells immersed in water is examined theoretically in relation to its thickness and the contents of its double-layer. The attenuation both in the water and inside the sphere is considered in this method, which cannot be ignored while the high frequency ultrasonic is used. Results of numerical calculations are presented for fat and low density polyethylene materials, with the hollow region filled with animal oil, water, or air. These results show how the acoustic impedance and the sound velocity of both layers, together with the thickness of the shell, affect the acoustic radiation force.

Wu, Rongrong; Cheng, Kaixuan; Liu, Jiehui; Mao, Yiwei; Gong, Xiufen [Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093 (China); Liu, Xiaozhou, E-mail: xzliu@nju.edu.cn [Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093 (China); State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190 (China)

2014-10-14T23:59:59.000Z

289

Total aerosol effect: forcing or radiative flux perturbation?  

SciTech Connect (OSTI)

Uncertainties in aerosol forcings, especially those associated with clouds, contribute to a large extent to uncertainties in the total anthropogenic forcing. The interaction of aerosols with clouds and radiation introduces feedbacks which can affect the rate of rain formation. Traditionally these feedbacks were not included in estimates of total aerosol forcing. Here we argue that they should be included because these feedbacks act quickly compared with the time scale of global warming. We show that for different forcing agents (aerosols and greenhouse gases) the radiative forcings as traditionally defined agree rather well with estimates from a method, here referred to as radiative flux perturbations (RFP), that takes these fast feedbacks and interactions into account. Thus we propose replacing the direct and indirect aerosol forcing in the IPCC forcing chart with RFP estimates. This implies that it is better to evaluate the total anthropogenic aerosol effect as a whole.

Lohmann, Ulrike; Storelvmo, Trude; Jones, Andy; Rotstayn, Leon; Menon, Surabi; Quaas, Johannes; Ekman, Annica; Koch, Dorothy; Ruedy, Reto

2009-09-25T23:59:59.000Z

290

The Role of Quantum Vacuum Forces in Microelectromechanical Systems  

E-Print Network [OSTI]

The presence of boundary surfaces in the vacuum alters the ground state of the quantized electromagnetic field and can lead to the appearance of vacuum forces. In the last decade, landmark measurements of the vacuum stress between conducting uncharged parallel plates (Casimir force) have been made. Recently the first micromachined MEMS (microelectromechanical system) device was fabricated that utilizes the Casimir force between parallel plates. The force dependence allows the device to serve as a highly sensitive position sensor. The are many other examples of quantum vacuum forces and effects besides the well known parallel plate Casimir force. Here we discuss potential roles of quantum vacuum forces and effects in MEMS systems and other systems. With the growing capability in nanofabrication, some of the roles may be actualized in the future. Because of the computational complexity, no theoretical results are yet available for a number of potentially interesting geometries and we can only speculate.

G. Jordan Maclay

2006-08-22T23:59:59.000Z

291

Experimental and theoretical investigation of angular dependence of the Casimir force between sinusoidally corrugated surfaces  

E-Print Network [OSTI]

In the current work we present the complete results for the measurement of normal Casimir force between shallow and smooth sinusoidally corrugated gold coated sphere and a plate at various angles between the corrugations using an atomic force microscope. All measured data were compared with the theoretical approach using the proximity force approximation and theory based on derivative expansion. In both cases real material properties of the surfaces and non-zero temperature were taken into account. Special attention is paid to the description of electrostatic interactions between corrugated surfaces at different angels between corrugations and samples reparation and characterization. The measured forces are found to be in good agreement with the theory including correlation effects of geometry and material properties and deviate significantly from the predictions of the proximity force approximation approach. This provides the quantitative confirmation for the observation of diffraction-type effects that are disregarded within the PFA approach. The obtained results open new opportunities for control of the Casimir effect in micromechanical systems.

A. A. Banishev; J. Wagner; T. Emig; R. Zandi; U. Mohideen

2014-02-12T23:59:59.000Z

292

Propagation of travelling waves in sub-excitable systems driven by noise and periodic forcing  

E-Print Network [OSTI]

It has been reported that traveling waves propagate periodically and stably in sub-excitable systems driven by noise [Phys. Rev. Lett. \\textbf{88}, 138301 (2002)]. As a further investigation, here we observe different types of traveling waves under different noises and periodic forces, using a simplified Oregonator model. Depending on different noises and periodic forces, we have observed different types of wave propagation (or their disappearance). Moreover, the reversal phenomena are observed in this system based on the numerical experiments in the one-dimensional space. As an explanation, we regard it as the effect of periodic forces. Thus, we give qualitative explanations to how reversal phenomena stably appear, which seem to arise from the mixing function of the periodic force and the noise. And the output period and three velocities (the normal, the positive and the negative) of the travelling waves are defined and their relationship with the periodic forces, along with the types of waves, are also studied in sub-excitable system under a fixed noise intensity.

Fen-Ni Si; Quan-Xing Liu; Jin-Zhong Zhang; Lu-Qun Zhou

2007-11-23T23:59:59.000Z

293

Reflexion on a method for Archaeology of technical machine: a multi-competences experience on roman wooden force pump of Perigueux  

E-Print Network [OSTI]

on roman wooden force pump of Perigueux N.Perry, Technological Institute of Bordeaux1 University, Fr R Institute for Building of Perigueux, Fr Abstract This study is based on Roman wooden force pumps. It appears that they were used in small numbers to raise water from wells, and more commonly as portable pumps to fight

Paris-Sud XI, Université de

294

Experience proves forced fracture closure works  

SciTech Connect (OSTI)

Forced closure, or perhaps better-named ``reverse gravel packing,`` of fractures immediately following hydraulic fracturing with proppant and gelled fluids is a technique which, with rare exception, can be extremely beneficial to the success of almost every hydraulic fracture treatment. By proper planning of the rig-up to allow immediate flow-back, substantial quantities of polymer and load fluid can be removed while simultaneously negating undesirable proppant settling within fractures in the near wellbore area. Fracture smearing (dilution of proppant into an extending fracture) after shutdown can be negated. And in most cases, proppant production from the formation can be reduced. Discussions in the article explain why Ely and Associates has the confidence to make these claims after extensive hydraulic fracturing experience in many geographical areas.

Ely, J.W. [John Ely and Associates, Inc., Houston, TX (United States)

1996-01-01T23:59:59.000Z

295

Atomic force microscopy of biochemically tagged DNA  

SciTech Connect (OSTI)

Small fragments of DNA of known length were made with the polymerase chain reaction. These fragments had biotin molecules covalently attached at their ends. They were subsequently labeled with a chimeric protein fusion between streptavidin and two immunoglobulin G-binding domains of staphyloccocal protein A. This tetrameric species was expected to bind up to four DNA molecules via their attached biotin moieties. The DNA-protein complex was deposited on mica and imaged with an atomic force microscope. The images revealed the protein chimera at the expected location at the ends of the strands of DNA as well as the expected dimers, trimers, and tetramers of DNA bound to a single protein. 25 refs., 5 figs.

Ogletree, D.F.; Kolbe, W.; Spengler, S.; Salmeron, M. (Lawrence Berkeley Laboratory, CA (United States)); Hansma, H.G.; Bezanilla, M. (Univ. of California, Santa Barbara (United States)); Sano, T.; Smith, C.S.; Cantor, C.R. (Boston Univ., MA (United States))

1993-05-01T23:59:59.000Z

296

Task force reduces stuck-pipe costs  

SciTech Connect (OSTI)

A task-force approach to stuck pipe has produced more than a 70% reduction in BP Exploration Operating Co.'s worldwide stuck-pipe costs during 1989 and 1990. We believe that these results have been primarily due to focusing our attention on improving personnel performance rather than to the introduction of new technology. Key elements in this paper of the efforts involved: Recognizing the importance of the drilling contractor and the service company staff's role in helping control stuck pipe; Promoting a rig-team approach to tackling the problem; Providing training on rig-team, stuck-pipe problem solving; and raising awareness of stuck pipe through a coordinated worldwide communications program among BP, contractors, and service companies.

Bradley, W.B. (BP Research, Houston, TX (US)); Jarman, D. (BP Exploration Operation Co., Aberdeen (GB)); Auflick, R.A.; Plott, R.S. (BP Exploration Operating Co., Houston, TX (US)); Wood, R.D. (BP Exploration Operating Co., London (GB)); Schofield, T.R. (BP Exploration Operating Co., Beijing (CN)); Cocking, D. (BP Exploration Operating Co., Ho Chi Minh City (CN))

1991-05-27T23:59:59.000Z

297

Forced oscillations in relativistic accretion disks and QPOs  

E-Print Network [OSTI]

In this work we explore the idea that the high frequency QPOs observed in LMXBs may be explained as a resonant coupling between the neutron star spin and epicyclic modes of accretion disk oscillations. We propose a new model for these QPOs based on forced oscillations induced in the accretion disk due to a stellar asymmetric rotating gravitational or magnetic field. It is shown that particles evolving in a rotating non-axisymmetric field are subject to three kinds of resonances: a corotation resonance, a Lindblad resonance due to a driving force, and a parametric resonance due to the time varying epicyclic frequencies. These results are extends by means of 2D numerical simulations of a simplified version of the accretion disk. The simulations are performed for the Newtonian gravitational potential, as well as for a pseudo-general relativistic potential, which enables us to explore the behavior of the resonances around both rotating neutron stars and black holes. Density perturbations are only significant in the region located close to the inner edge of the disk near the ISCO where the gravitational or magnetic perturbation is maximal. It is argued that the nearly periodic motion induced in the disk will produce high quality factor QPOs. Finally, applying this model to a typical neutron star, we found that the strongest response occurs when the frequency difference of the two modes equals either the spin frequency (for "slow rotators") or half of it (for "fast rotators"). The two main excited modes may both be connected to vertical oscillations of the disk. We emphasize that strong gravity is not needed to excite the modes.

J. Petri

2006-12-29T23:59:59.000Z

298

Wave forces on monotower structures fitted with icebreaking cones  

E-Print Network [OSTI]

and theory presently used in the design of offshore tower structures. Presently, wave forces are predicted using a wave- structure interaction approach, diffraction theory, or some combination of the two. An alternative wave force theory was presented... of structures fitted with icebreaking cones. THEORETICAL DEVELOPMENT One of the major difficulties in analyzing the dynamic response of offshore structures is determining the wave-induced excitation forces. There are currently two methods of predicting wave...

Harrington, Michael Gerard

2012-06-07T23:59:59.000Z

299

Notes 14. Experimental identification of bearing force coefficients  

E-Print Network [OSTI]

An example of system parameter identification (Hybrid Brush Seal) Luis San Andr?s (lecturer) Thanks to Adolfo Delgado, Jos? Baker (RAs) & support from Siemens Power Generation MEEN 617 - April 2008 Structural parameters K shaft = 243 lbf/in (42...Notes 14. IDENTIFICATION OF BEARING FORCE COEFFICIENTS. ? Dr. Luis San Andr?s (2009) 1 Handout # 14 (MEEN 626) Application example Experimental identification of bearing force coefficients Experimental identification of the dynamic force...

San Andres, Luis

2009-01-01T23:59:59.000Z

300

A Transform Method of a Force Curve Obtained by Surface Force Apparatus to the Density Distribution of a Liquid on a Surface: An Improved Version  

E-Print Network [OSTI]

We propose a transform method from a force curve obtained by a surface force apparatus (SFA) to a density distribution of a liquid on a surface of the SFA probe. (We emphasize that the transform method is a theory for the experiment.) In the method, two-body potential between the SFA probe and the solvent sphere is modeled as the soft attractive potential with rigid wall. The model potential is more realistic compared with the rigid potential applied in our earlier work. The introduction of the model potential is the improved point of the present transform method. The transform method is derived based on the statistical mechanics of a simple liquid where the simple liquid is an ensemble of small spheres. To derive the transform method, Kirkwood superposition approximation is used. It is found that the transformation can be done by a sequential computation. It is considered that the solvation structure can be obtained more precisely by using the improved transform method.

Ken-ichi Amano; Eisuke Tanaka

2014-12-08T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Correlation between present-day model simulation of Arctic cloud radiative forcing and sea ice consistent with positive winter convective cloud feedback  

E-Print Network [OSTI]

A positive feedback on winter sea-ice loss, based on warming due to radiative forcing caused by the onset of convective clouds in response to sea-ice loss, has recently been proposed. This feedback has thus far been ...

Emanuel, Kerry Andrew

302

amber force fields: Topics by E-print Network  

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

Fields and Development of Improved Protein Backbone Parameters Laboratory, Upton, New York 11973, ABSTRACT The ff94 force field that is com- monly associated with the Amber a...

303

amber force field: Topics by E-print Network  

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

Fields and Development of Improved Protein Backbone Parameters Laboratory, Upton, New York 11973, ABSTRACT The ff94 force field that is com- monly associated with the Amber a...

304

antibody recognition force: Topics by E-print Network  

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

Models of YesNo and Two-Alternative Forced-Choice Recognition Memory compared 3 models of recognition memory in their ability to generalize across yesno and...

305

Before Senate Subcommittee on Strategic Forces - Committee on...  

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

on Strategic Forces - Committee on Armed Services By: David Huizenga, Senior Advisor for Environmental Management Subject: FY 2013 Budget Request for Office of...

306

Before the Subcommittee on Strategic Forces - House Armed Services...  

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

Written Statement by David Huizenga, Senior Advisor for Environmental Management For the Subcommittee on Strategic Forces - House Armed Services Committee 5-9-13David Huizenga FT...

307

Drag forces on inclusions in classical fields with dissipative dynamics  

E-Print Network [OSTI]

We study the drag force on uniformly moving inclusions which interact linearly with dynamical free field theories commonly used to study soft condensed matter systems. Drag forces are shown to be nonlinear functions of the inclusion velocity and depend strongly on the field dynamics. The general results obtained can be used to explain drag forces in Ising systems and also predict the existence of drag forces on proteins in membranes due to couplings to various physical parameters of the membrane such as composition, phase and height fluctuations.

Vincent Demery; D. S. Dean

2010-04-01T23:59:59.000Z

308

active force control: Topics by E-print Network  

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

of free-hand ... Gilbertson, Matthew Wright 2010-01-01 9 On Dynamic Models of Robot Force Control MIT - DSpace Summary: For precise robot control, endpoint compliance...

309

Force and shape coordination in amoeboid cell motility  

E-Print Network [OSTI]

strain energy. Traction force components in wild-type cellswild-type cells To investigate the role that MyoII contractility plays in the strain energy

Alonso-Latorre, Baldomero

2010-01-01T23:59:59.000Z

310

Air Force Announces Funding for Alternative Energy Research & Development  

Broader source: Energy.gov [DOE]

The Air Force Research Laboratory (AFRL) has released a Broad Area Announcement (BAA) for over $25 million for Alternative Energy Research & Development.

311

SciTech Connect: Gametic selection as an evolutionary force:...  

Office of Scientific and Technical Information (OSTI)

Gametic selection as an evolutionary force: the maintenance of lethal polymorphisms in wild populations of Mus musculus Citation Details In-Document Search Title: Gametic selection...

312

Dynamics and length distribution of microtubules under force and confinement  

E-Print Network [OSTI]

We investigate the microtubule polymerization dynamics with catastrophe and rescue events for three different confinement scenarios, which mimic typical cellular environments: (i) The microtubule is confined by rigid and fixed walls, (ii) it grows under constant force, and (iii) it grows against an elastic obstacle with a linearly increasing force. We use realistic catastrophe models and analyze the microtubule dynamics, the resulting microtubule length distributions, and force generation by stochastic and mean field calculations; in addition, we perform stochastic simulations. We also investigate the force dynamics if growth parameters are perturbed in dilution experiments. Finally, we show the robustness of our results against changes of catastrophe models and load distribution factors.

Bjrn Zelinski; Nina Mller; Jan Kierfeld

2012-12-14T23:59:59.000Z

313

Correlation between fundamental binding forces and clinical prognosis...  

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

Atomic force microscopy was used to fish for binding reactions between a fibronectin-coated probe (i.e., substrate simulating an implant device) and each of 15...

314

Colorado - Report of the Task Force on Statewide Transmission...  

Open Energy Info (EERE)

Permitting Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Colorado - Report of the Task Force on Statewide Transmission Siting and Permitting Abstract...

315

State-space model identification and feedback control of unsteady aerodynamic forces  

E-Print Network [OSTI]

Unsteady aerodynamic models are necessary to accurately simulate forces and develop feedback controllers for wings in agile motion; however, these models are often high dimensional or incompatible with modern control techniques. Recently, reduced-order unsteady aerodynamic models have been developed for a pitching and plunging airfoil by linearizing the discretized Navier-Stokes equation with lift-force output. In this work, we extend these reduced-order models to include multiple inputs (pitch, plunge, and surge) and explicit parameterization by the pitch-axis location, inspired by Theodorsen's model. Next, we investigate the na\\"{\\i}ve application of system identification techniques to input--output data and the resulting pitfalls, such as unstable or inaccurate models. Finally, robust feedback controllers are constructed based on these low-dimensional state-space models for simulations of a rigid flat plate at Reynolds number 100. Various controllers are implemented for models linearized at base angles of ...

Brunton, Steven L; Rowley, Clarence W

2014-01-01T23:59:59.000Z

316

Consumer and shear force evaluation of steaks from the M. Serratus ventralis  

E-Print Network [OSTI]

to thank my fellow graduate students and student workers who have helped unselfishly time and again. Specifically I would like to thank Bridget Baird, Eric Metteauer, Diana Huerta, Robby Smith, LeeAnn Sitka, John David Nicholson, Lyda Garcia, and Brad... as their most important quality trait. The National Beef Tenderness Survey (Morgan et al., 1991) observed that a high percentage of retail cuts from the chuck and round received overall tenderness ratings less than ?slightly tender,? based on shear force...

Bagley, Jason Lee

2007-04-25T23:59:59.000Z

317

An Inertial Cell Model for the Drag Force in Multi-phase Flow  

E-Print Network [OSTI]

A new model for the drag coefficient of a sphere in a concentrated system is described. It is based upon a cell-averaged model for the Stokes regime combined with a physically motivated extrapolation to arbitrary Reynolds number. It can be used as an alternative to the isolated particle drag coefficient in Euler-Lagrange modelling of solid-liquid multi-phase flow.The corresponding drag force also provides a dynamic bed equation for use in Euler-Euler modelling.

Tupper, Gary; Mainza, Aubrey

2015-01-01T23:59:59.000Z

318

Conference-EC-US Task Force Joint US-EU Workshop on Metabolomics and Environmental Biotechnology  

SciTech Connect (OSTI)

Since 1990, the EC-US Task Force on Biotechnology Research has been coordinating transatlantic efforts to guide and exploit the ongoing revolution in biotechnology and the life sciences. The Task Force was established in June 1990 by the European Commission and the White House Office of Science and Technology Policy. The Task Force has acted as an effective forum for discussion, coordination, and development of new ideas for the last 18 years. Task Force members are European Commission and US Government science and technology administrators who meet annually to enhance communication across the Atlantic, and to encourage collaborative research. Through sponsoring workshops, and other activities, the Task Force also brings together scientific leaders and early career researchers from both sides of the Atlantic to forecast research challenges and opportunities and to promote better links between researchers. Over the years, by keeping a focus on the future of science, the Task Force has played a key role in establishing a diverse range of emerging scientific fields, including biodiversity research, neuroinformatics, genomics, nanobiotechnology, neonatal immunology, transkingdom molecular biology, biologically-based fuels, and environmental biotechnology. The EC-US Task Force has sponsored a number of Working Groups on topics of mutual transatlantic interest. The idea to create a Working Group on Environmental Biotechnology research was discussed in the Task Force meeting of October 1993. The EC-US Working Group on Environmental Biotechnology set as its mission 'To train the next generation of leaders in environmental biotechnology in the United States and the European Union to work collaboratively across the Atlantic.' Since 1995, the Working Group supported three kinds of activities, all of which focus one early career scientists: (1) Workshops on the use of molecular methods and genomics in environmental biotechnology; (2) Short courses with theoretical, laboratory and field elements; and (3) Short term exchange fellowships. The short term exchange fellowships were created to enable young scientists to develop collaborations with colleagues across the Atlantic and to learn a new skill or expertise in the area of environmental biotechnology.

PI: Lily Y. Young; Co-PI: Gerben J. Zylstra

2009-06-04T23:59:59.000Z

319

UW SCHOOL OF PHARMACY EDUCATIONAL INNOVATION TASK FORCE  

E-Print Network [OSTI]

UW SCHOOL OF PHARMACY EDUCATIONAL INNOVATION TASK FORCE 2012-2013 Barry Gidal (chair) Ron Burnette of the Task Force and how those activities fulfilled the charges and support the School's mission and strategic priorities. These documents will be posted, as appropriate, on the SOP Committee webpage (http://pharmacy.wisc.edu/about-school

Sheridan, Jennifer

320

Nuclear forces from chiral EFT: The unfinished business  

E-Print Network [OSTI]

In spite of the great progress we have seen in recent years in the derivation of nuclear forces from chiral effective field theory (EFT), some important issues are still unresolved. In this contribution, we discuss the open problems which have particular relevance for microscopic nuclear structure, namely, the proper renormalization of chiral nuclear potentials and sub-leading many-body forces.

R. Machleidt; D. R. Entem

2010-01-06T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

air force materials: Topics by E-print Network  

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

air force materials First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Air Force Research Laboratory...

322

Extra force in Kaluza-Klein gravity theory  

E-Print Network [OSTI]

In induced matter Kaluza-Klein gravity theory the solution of the dynamics equations for the test particle on null path leads to additional force in four-dimensional space-time. We find such force from five-dimensional geodesic line equations and apply this approach to analysis of the asymmetrically warped space-time.

W. B. Belayev

2007-06-18T23:59:59.000Z

323

Amsterdam Oxford Joint Rescue Forces Team Description Paper  

E-Print Network [OSTI]

Amsterdam Oxford Joint Rescue Forces Team Description Paper Virtual Robot competition Rescue van Weelden1 , Chaim Bastiaan1 , Niels Out1 , Olaf Zwennes1 , Sev´aztian Soffia Ot´arola1 , Julian de://www.jointrescueforces.eu Abstract. With the progress made in active exploration, the robots of the Joint Rescue Forces are capable

Visser, Arnoud

324

MODELLING UNCONSOLIDATED RUBBLE FORCES ON A CYLINDRICAL STRUCTURE  

E-Print Network [OSTI]

, MODELLING UNCONSOLIDATED RUBBLE FORCES ON A CYLINDRICAL STRUCTURE RF. McKenna and S structlJre and unconsolidated ice ridges. The tests were conducted with a 0.32 m diameter structure in unconsolidated ridges are given in McKenna el al. (1995). The tests provide a means of correlating the forces

Bruneau, Steve

325

Academic Science Program Task Force Tuesday, September 13, 2011  

E-Print Network [OSTI]

Academic Science Program Task Force Tuesday, September 13, 2011 3:00 p.m. Nelson Hall, Room 3220 on the Academic Science Program Task Force to Council of Deans on Thursday, September 22, 2011 Margery has been, September 28, 2011 in Witherspoon Cinema from 3-4 p.m. and topics will include budget, strategic plan

326

Surface forces: Surface roughness in theory and experiment  

SciTech Connect (OSTI)

A method of incorporating surface roughness into theoretical calculations of surface forces is presented. The model contains two chief elements. First, surface roughness is represented as a probability distribution of surface heights around an average surface height. A roughness-averaged force is determined by taking an average of the classic flat-surface force, weighing all possible separation distances against the probability distributions of surface heights. Second the model adds a repulsive contact force due to the elastic contact of asperities. We derive a simple analytic expression for the contact force. The general impact of roughness is to amplify the long range behaviour of noncontact (DLVO) forces. The impact of the elastic contact force is to provide a repulsive wall which is felt at a separation between surfaces that scales with the root-mean-square (RMS) roughness of the surfaces. The model therefore provides a means of distinguishing between true zero, where the separation between the average centres of each surface is zero, and apparent zero, defined by the onset of the repulsive contact wall. A normal distribution may be assumed for the surface probability distribution, characterised by the RMS roughness measured by atomic force microscopy (AFM). Alternatively the probability distribution may be defined by the histogram of heights measured by AFM. Both methods of treating surface roughness are compared against the classic smooth surface calculation and experimental AFM measurement.

Parsons, Drew F., E-mail: Drew.Parsons@anu.edu.au; Walsh, Rick B.; Craig, Vincent S. J. [Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)] [Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)

2014-04-28T23:59:59.000Z

327

Formal definition of POTENTIAL ENERGY (valid for conservative forces only)  

E-Print Network [OSTI]

page - 16 Formal definition of POTENTIAL ENERGY (valid for conservative forces only) Given one type of conservative force F UB - UA= - = - Definition of 'Potential energy difference" conserv #12;page - 17 the definition of the "potential energy difference UB - UA " as equal to negative value of the work W done

328

Optical geometry analysis of the electromagnetic self-force  

E-Print Network [OSTI]

We present an analysis of the behaviour of the electromagnetic self-force for charged particles in a conformally static spacetime, interpreting the results with the help of optical geometry. Some conditions for the vanishing of the local terms in the self-force are derived and discussed.

Sebastiano Sonego; Marek A. Abramowicz

2006-02-17T23:59:59.000Z

329

Theoretical Analysis of the Preload Force for a Tokamak Central Solenoid Coil Structure  

SciTech Connect (OSTI)

A simple one-dimensional analytic formulation is developed for approximate determination of the preload force that must be applied by tie-rods and/or tie-plates for a multimodule central solenoid coil assembly in tokamak devices. The primary purpose of the preload is to ensure that vertical tensile stress does not develop between any two adjacent module coils within the assembly. The absence of the tensile force is a minimal requirement needed to prevent lateral movements of the coils, when friction is the sole means available. An excessive preload, on the other hand, can damage insulation and conductor jackets. The analysis is based on a model system in which the vertical motion of the coil winding is described through representation of the coil conductors and tie-rods/-plates with linear springs. The coupled spring system is represented by a system of simultaneous linear equations, which is solved analytically to obtain the compression force at each spring in terms of the applied preload, electromagnetic forces on the springs, and spring constants. Although this procedure lacks the rigor of complex two- or three-dimensional analyses, it is expected to be able to play some useful role.

You, Kwang-Il; Lee, Deok Kyo [Korea Basic Science Institute (Korea, Republic of)

2003-06-15T23:59:59.000Z

330

Electric force microscopy of semiconductors: Theory of cantilever frequency fluctuations and noncontact friction  

SciTech Connect (OSTI)

An electric force microscope employs a charged atomic force microscope probe in vacuum to measure fluctuating electric forces above the sample surface generated by dynamics of molecules and charge carriers. We present a theoretical description of two observables in electric force microscopy of a semiconductor: the spectral density of cantilever frequency fluctuations (jitter), which are associated with low-frequency dynamics in the sample, and the coefficient of noncontact friction, induced by higher-frequency motions. The treatment is classical-mechanical, based on linear response theory and classical electrodynamics of diffusing charges in a dielectric continuum. Calculations of frequency jitter explain the absence of contributions from carrier dynamics to previous measurements of an organic field effect transistor. Calculations of noncontact friction predict decreasing friction with increasing carrier density through the suppression of carrier density fluctuations by intercarrier Coulomb interactions. The predicted carrier density dependence of the friction coefficient is consistent with measurements of the dopant density dependence of noncontact friction over Si. Our calculations predict that in contrast to the measurement of cantilever frequency jitter, a noncontact friction measurement over an organic semiconductor could show appreciable contributions from charge carriers.

Lekkala, Swapna; Marohn, John A.; Loring, Roger F., E-mail: roger.loring@cornell.edu [Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853 (United States)

2013-11-14T23:59:59.000Z

331

Hydrophobic force field as molecular alternative to surface-area models  

SciTech Connect (OSTI)

An effective force field for hydrophobic interactions is developed based on a modified potential-of-mean-force (PMF) expansion of the effective many-body interactions between nonpolar molecules in water. For the simplest nonpolar solutes in water, hard particles, the modified PMF expansion is exact in both limiting cases of infinite separation and perfect overlap. The hydrophobic interactions are parametrized by using the information-theory model of hydrophobic hydration. The interactions between nonpolar solutes are short-ranged and can be evaluated efficiently on a computer. The force field is compared with simulation data for alkane conformational equilibria in water as well as a model for the formation of a hydrophobic core of a protein. The modified PMF expansion can be extended to solutes with attractive interactions. The observed accuracy, computational efficiency, and atomic detail of the model suggest that this simple hydrophobic force field can lead to a molecular alternative for phenomenological surface-area models with applications in ligand-binding and protein-folding studies.

Hummer, G.

1999-07-07T23:59:59.000Z

332

Is electrospray emission really due to columbic forces?  

SciTech Connect (OSTI)

Electrospray ionization (ESI) is a widely adopted soft ionization method for mass spectroscopy (MS). In spite of the undeniable success of the technique, its mechanisms are difficult to be analytically modelled because the process is characterized by non-equilibrium conditions. The common belief is that the formation of gas-phase ions takes place at the apex of the Taylor cone via electrophoretic charging. The charge balance implies that a conversion of electrons to ions should occur at the metal-liquid interface of the injector needle. We have detected that the above description is based on unproved assumptions which are not consistent with the correct evaluation of the problem. The comparison between experiments performed under the usual geometry and observations obtained under symmetric field configurations suggests that the emitted droplets cannot be significantly charged or, at least, that any possible ionization mechanism is so poorly efficient to ensure that columbic forces cannot play a major role in jet formation, even in cases where the liquid consists of a solution of ionic species. Further work is required to clearly understand how ionization occurs in ESI-MS.

Aliotta, Francesco, E-mail: aliotta@ipcf.cnr.it; Ponterio, Rosina C.; Salvato, Gabriele; Vasi, Cirino [CNR-Istituto per i Processi Chimico-Fisici, Viale F. Stagno dAlcontres 37, I-98158 Messina (Italy); Calandra, Pietro [CNR-Istituto per lo Studio dei Materiali Nanostrutturati, via dei Taurini 19, I-00185 Roma (Italy); Pochylski, Mikolaj [Adam Mickiewicz University, Faculty of Physics, Umultowska 85, PL-62614 Poznan (Poland)

2014-09-15T23:59:59.000Z

333

Dielectric spectroscopy at the nanoscale by atomic force microscopy: A simple model linking materials properties and experimental response  

SciTech Connect (OSTI)

The use of an atomic force microscope for studying molecular dynamics through dielectric spectroscopy with spatial resolution in the nanometer scale is a recently developed approach. However, difficulties in the quantitative connection of the obtained data and the material dielectric properties, namely, frequency dependent dielectric permittivity, have limited its application. In this work, we develop a simple electrical model based on physically meaningful parameters to connect the atomic force microscopy (AFM) based dielectric spectroscopy experimental results with the material dielectric properties. We have tested the accuracy of the model and analyzed the relevance of the forces arising from the electrical interaction with the AFM probe cantilever. In this way, by using this model, it is now possible to obtain quantitative information of the local dielectric material properties in a broad frequency range. Furthermore, it is also possible to determine the experimental setup providing the best sensitivity in the detected signal.

Miccio, Luis A., E-mail: luisalejandro-miccio@ehu.es; Colmenero, Juan [Centro de Fsica de Materiales (CSIC-UPV/EHU), P. M. de Lardizabal 5, 20018 San Sebastin (Spain); Donostia International Physics Center, P. M. de Lardizabal 4, 20018 San Sebastin (Spain); Departamento de Fsica de Materiales (UPV/EHU), 20080 San Sebastin (Spain); Kummali, Mohammed M.; Alegra, ngel [Centro de Fsica de Materiales (CSIC-UPV/EHU), P. M. de Lardizabal 5, 20018 San Sebastin (Spain); Departamento de Fsica de Materiales (UPV/EHU), 20080 San Sebastin (Spain); Schwartz, Gustavo A. [Centro de Fsica de Materiales (CSIC-UPV/EHU), P. M. de Lardizabal 5, 20018 San Sebastin (Spain); Donostia International Physics Center, P. M. de Lardizabal 4, 20018 San Sebastin (Spain)

2014-05-14T23:59:59.000Z

334

A calibration method for lateral forces for use with colloidal probe force microscopy cantilevers  

SciTech Connect (OSTI)

A calibration method is described for colloidal probe cantilevers that enables friction force measurements obtained using lateral force microscopy (LFM) to be quantified. The method is an adaptation of the lever method of Feiler et al. [A. Feiler, P. Attard, and I. Larson, Rev. Sci. Instum. 71, 2746 (2000)] and uses the advantageous positioning of probe particles that are usually offset from the central axis of the cantilever. The main sources of error in the calibration method are assessed, in particular, the potential misalignment of the long axis of the cantilever that ideally should be perpendicular to the photodiode detector. When this is not taken into account, the misalignment is shown to have a significant effect on the cantilever torsional stiffness but not on the lateral photodiode sensitivity. Also, because the friction signal is affected by the topography of the substrate, the method presented is valid only against flat substrates. Two types of particles, 20 {mu}m glass beads and UO{sub 3} agglomerates attached to silicon tapping mode cantilevers were used to test the method against substrates including glass, cleaved mica, and UO{sub 2} single crystals. Comparisons with the lateral compliance method of Cain et al. [R. G. Cain, S. Biggs, and N. W. Page, J. Colloid Interface Sci. 227, 55 (2000)] are also made.

Quintanilla, M. A. S.; Goddard, D. T. [Nexia Solutions Ltd., Springfields, Salwick, Preston, Lancashire PR4 0XJ (United Kingdom)

2008-02-15T23:59:59.000Z

335

Measurements of the Casimir-Lifshitz force in fluids: the effect of electrostatic forces and Debye screening  

E-Print Network [OSTI]

In this work, we present detailed measurements of the Casimir-Lifshitz force between two gold surfaces (a sphere and a plate) immersed in ethanol and study the effect of residual electrostatic forces, which are dominated by static fields within the apparatus and can be reduced with proper shielding. Electrostatic forces are further reduced by Debye screening through the addition of salt ions to the liquid. Additionally, the salt leads to a reduction of the Casimir-Lifshitz force by screening the zero-frequency contribution to the force; however, the effect is small between gold surfaces at the measured separations and within experimental error. An improved calibration procedure is described and compared to previous methods. Finally, the experimental results are compared to Lifshitz's theory and found to be consistent for the materials used in the experiment.

J. N. Munday; Federico Capasso; V. Adrian Parsegian; Sergey M. Bezrukov

2008-08-13T23:59:59.000Z

336

NONLINEAR FORCE PROFILE USED TO INCREASE THE PERFORMANCE OF A HAPTIC USER INTERFACE FOR TELEOPERATING A ROBOTIC HAND  

SciTech Connect (OSTI)

MODIFIED PAPER TITLE AND ABSTRACT DUE TO SLIGHTLY MODIFIED SCOPE: TITLE: Nonlinear Force Profile Used to Increase the Performance of a Haptic User Interface for Teleoperating a Robotic Hand Natural movements and force feedback are important elements in using teleoperated equipment if complex and speedy manipulation tasks are to be accomplished in hazardous environments, such as hot cells, glove boxes, decommissioning, explosives disarmament, and space. The research associated with this paper hypothesizes that a user interface and complementary radiation compatible robotic hand that integrates the human hands anthropometric properties, speed capability, nonlinear strength profile, reduction of active degrees of freedom during the transition from manipulation to grasping, and just noticeable difference force sensation characteristics will enhance a users teleoperation performance. The main contribution of this research is in that a system that concisely integrates all these factors has yet to be developed and furthermore has yet to be applied to a hazardous environment as those referenced above. In fact, the most prominent slave manipulator teleoperation technology in use today is based on a design patented in 1945 (Patent 2632574) [1]. The robotic hand/user interface systems of similar function as the one being developed in this research limit their design input requirements in the best case to only complementing the hands anthropometric properties, speed capability, and linearly scaled force application relationship (e.g. robotic force is a constant, 4 times that of the user). In this paper a nonlinear relationship between the force experienced between the user interface and the robotic hand was devised based on property differences of manipulation and grasping activities as they pertain to the human hand. The results show that such a relationship when subjected to a manipulation task and grasping task produces increased performance compared to the traditional linear scaling techniques used by other systems. Key Words: Teleoperation, Robotic Hand, Robotic Force Scaling

Anthony L. Crawford

2012-07-01T23:59:59.000Z

337

Extracting folding landscape characteristics of biomolecules using mechanical forces  

E-Print Network [OSTI]

In recent years single molecule force spectroscopy has opened a new avenue to provide profiles of the complex energy landscape of biomolecules. In this field, quantitative analyses of the data employing sound theoretical models, have played a major role in interpreting data and anticipating outcomes of experiments. Here, we explain how by using temperature as a variable in mechanical unfolding of biomolecules in force spectroscopy, the roughness of the energy landscape can be measured without making any assumptions about the underlying reaction coordinate. Estimates of other aspects of the energy landscape such as free energy barriers or the transition state (TS) locations could depend on the precise model used to analyze the experimental data. We illustrate the inherent difficulties in obtaining the transition state location from loading rate or force-dependent unfolding rates. Because the transition state moves as the force or the loading rate is varied, which is reminiscent of the Hammond effect, it is in general difficult to invert the experimental data. The independence of the TS location on force holds good only for brittle or hard biomolecules whereas the TS location changes considerably if the molecule is soft or plastic. Finally, we discuss the goodness of the end-to-end distance (or pulling) coordinate of the molecule as a surrogate reaction coordinate in a situation like force-induced ligand-unbinding from a gated molecular receptor as well as force-quench refolding of an RNA hairpin.

Changbong Hyeon; Michael Hinczewski; D. Thirumalai

2015-01-14T23:59:59.000Z

338

Treatise with Reasoning Proof of the First Law of Energy Conservation Forced Interactions of Material Systems and Their Structures  

E-Print Network [OSTI]

Treatise with Reasoning Proof of the First Law of Energy Conservation Forced Interactions The First Law of Energy Conservation, have been traditionally accepted as axiomatic laws that cannot and reasoned the general proof of energy conservation based on the Newton's Laws of motion and energy

Kostic, Milivoje M.

339

Dynamic Force/Position Modeling of a one-DOF Smart Piezoelectric Micro-Finger with Sensorized End-Effector  

E-Print Network [OSTI]

microscale system is studied where a smart microsystem composed of an active based material actuatorDynamic Force/Position Modeling of a one-DOF Smart Piezoelectric Micro-Finger with Sensorized End enables to understand the interaction between the complete smart microsystem and the environment

Boyer, Edmond

340

Dynamic force spectroscopy on multiple bonds: experiments and model  

E-Print Network [OSTI]

We probe the dynamic strength of multiple biotin-streptavidin adhesion bonds under linear loading using the biomembrane force probe setup for dynamic force spectroscopy. Measured rupture force histograms are compared to results from a master equation model for the stochastic dynamics of bond rupture under load. This allows us to extract the distribution of the number of initially closed bonds. We also extract the molecular parameters of the adhesion bonds, in good agreement with earlier results from single bond experiments. Our analysis shows that the peaks in the measured histograms are not simple multiples of the single bond values, but follow from a superposition procedure which generates different peak positions.

T. Erdmann; S. Pierrat; P. Nassoy; U. S. Schwarz

2007-12-18T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Force-velocity relations for multiple molecular motor transportation  

E-Print Network [OSTI]

A transition rate model of cargo transportation by N effective molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent experimental observations.

Wang, Ziqing

2009-01-01T23:59:59.000Z

342

Force-velocity relations for multiple-molecular-motor transport  

E-Print Network [OSTI]

A transition rate model of cargo transport by $N$ molecular motors is proposed. Under the assumption of steady state, the force-velocity curve of multi-motor system can be derived from the force-velocity curve of single motor. Our work shows, in the case of low load, the velocity of multi-motor system can decrease or increase with increasing motor number, which is dependent on the single motor force-velocity curve. And most commonly, the velocity decreases. This gives a possible explanation to some recent

Ziqing Wang; Ming Li

2009-10-01T23:59:59.000Z

343

The Dark Force: Astrophysical Repulsion from Dark Energy  

E-Print Network [OSTI]

Dark energy (i.e., a cosmological constant) leads, in the Newtonian approximation, to a repulsive force which grows linearly with distance. We discuss possible astrophysical effects of this "dark" force. For example, the dark force overcomes the gravitational attraction from an object (e.g., dwarf galaxy) of mass $10^7 M_\\odot$ at a distance of $~ 23$ kpc. It seems possible that observable velocities of bound satellites (rotation curves) could be significantly affected, and therefore used to measure the dark energy density.

Ho, Chiu Man

2015-01-01T23:59:59.000Z

344

Technical Note: Estimating Aerosol Effects on Cloud Radiative Forcing  

SciTech Connect (OSTI)

Estimating anthropogenic aerosol effects on the planetary energy balance through the aerosol influence on clouds using the difference in cloud radiative forcing from simulations with and without anthropogenic emissions produces estimates that are positively biased. A more representative method is suggested using the difference in cloud radiative forcing calculated with aerosol radiative effects neglected. The method also yields an aerosol radiative forcing decomposition that includes a term quantifying the impact of changes in surface albedo. The method requires only two additional diagnostic calculations: the whole-sky and clear-sky top-of-atmosphere radiative flux with aerosol radiative effects neglected.

Ghan, Steven J.

2013-10-09T23:59:59.000Z

345

Effects of realistic tensor force on nuclear structure  

SciTech Connect (OSTI)

First-order tensor-force effects on nuclear structure are investigated in the self-consistent mean-field and RPA calculations with the M3Y-type semi-realistic interactions, which contain the realistic tensor force. The tensor force plays a key role in Z- or N-dependence of the shell structure, and in transitions involving spin degrees-of-freedom. It is demonstrated that the semi-realistic interactions successfully describe the N-dependence of the shell structure in the proton-magic nuclei (e.g. Ca and Sn), and the magnetic transitions (e.g. M1 transition in {sup 208}Pb).

Nakada, H. [Department of Physics, Graduate School of Science, Chiba University, Inage, Chiba 263-8522 (Japan)

2012-10-20T23:59:59.000Z

346

Analytic cubic and quartic force fields using density-functional theory  

SciTech Connect (OSTI)

We present the first analytic implementation of cubic and quartic force constants at the level of KohnSham density-functional theory. The implementation is based on an open-ended formalism for the evaluation of energy derivatives in an atomic-orbital basis. The implementation relies on the availability of open-ended codes for evaluation of one- and two-electron integrals differentiated with respect to nuclear displacements as well as automatic differentiation of the exchangecorrelation kernels. We use generalized second-order vibrational perturbation theory to calculate the fundamental frequencies of methane, ethane, benzene, and aniline, comparing B3LYP, BLYP, and HartreeFock results. The HartreeFock anharmonic corrections agree well with the B3LYP corrections when calculated at the B3LYP geometry and from B3LYP normal coordinates, suggesting that the inclusion of electron correlation is not essential for the reliable calculation of cubic and quartic force constants.

Ringholm, Magnus; Gao, Bin; Thorvaldsen, Andreas J.; Ruud, Kenneth [Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of TromsThe Arctic University of Norway, 9037 Troms (Norway)] [Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of TromsThe Arctic University of Norway, 9037 Troms (Norway); Jonsson, Dan [Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of TromsThe Arctic University of Norway, 9037 Troms (Norway) [Centre for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of TromsThe Arctic University of Norway, 9037 Troms (Norway); High Performance Computing Group, University of TromsThe Arctic University of Norway, 9037 Troms (Norway); Bast, Radovan [Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, AlbaNova University Center, S-10691 Stockholm, Sweden and PDC Center for High Performance Computing, Royal Institute of Technology, S-10044 Stockholm (Sweden)] [Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, AlbaNova University Center, S-10691 Stockholm, Sweden and PDC Center for High Performance Computing, Royal Institute of Technology, S-10044 Stockholm (Sweden); Ekstrm, Ulf; Helgaker, Trygve [Center for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo (Norway)] [Center for Theoretical and Computational Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo (Norway)

2014-01-21T23:59:59.000Z

347

The effect of cohesive forces on the fluidization of aeratable powders  

SciTech Connect (OSTI)

The effects of cohesive forces of van der Waals type in the fluidization/defluidization of aeratable type A powders in the Geldart classification are numerically investigated. The effects of friction and particle-size distribution (PSD) on some design-significant parameters, such as minimum fluidization and bubbling velocities, are also investigated. For these types of particles, cohesive forces are observed as necessary to fully exhibit the role friction plays in commonly observed phenomena, such as pressure overshoot and hysteresis around minimum fluidization. This study also shows that a full-experimental PSD consisting of a dozen particle sizes may be sufficiently represented by a few particle diameters. Reducing the number of particle types may benefit the continuum approach, which is based on the kinetic theory of granular flow, by reducing computational expense, while still maintaining the accuracy of the predictions.

Galvin, Janine F.; Benyahia, Sofiane

2014-01-01T23:59:59.000Z

348

Dual harmonic Kelvin probe force microscopy at the grapheneliquid interface  

SciTech Connect (OSTI)

Kelvin probe force microscopy (KPFM) is a powerful technique for the determination of the contact potential difference (CPD) between an atomic force microscope tip and a sample under ambient and vacuum conditions. However, for many energy storage and conversion systems, including graphene-based electrochemical capacitors, understanding electrochemical phenomena at the solidliquid interface is paramount. Despite the vast potential to provide fundamental insight for energy storage materials at the nanoscale, KPFM has found limited applicability in liquid environments to date. Here, using dual harmonic (DH)-KPFM, we demonstrate CPD imaging of graphene in liquid. We find good agreement with measurements performed in air, highlighting the potential of DH-KPFM to probe electrochemistry at the grapheneliquid interface.

Collins, Liam; Rodriguez, Brian J., E-mail: brian.rodriguez@ucd.ie [School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland); Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4 (Ireland); Kilpatrick, Jason I.; Weber, Stefan A. L. [Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4 (Ireland); Vlassiouk, Ivan V. [Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Tselev, Alexander; Jesse, Stephen; Kalinin, Sergei V. [Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2014-03-31T23:59:59.000Z

349

Electrostatic microvalves utilizing conductive nanoparticles for improved speed, lower power, and higher force actuation.  

SciTech Connect (OSTI)

We have designed and built electrostatically actuated microvalves compatible with integration into a PDMS based microfluidic system. The key innovation for electrostatic actuation was the incorporation of carbon nanotubes into the PDMS valve membrane, allowing for electrostatic charging of the PDMS layer and subsequent discharging, while still allowing for significant distention of the valveseat for low voltage control of the system. Nanoparticles were applied to semi-cured PDMS using a stamp transfer method, and then cured fully to make the valve seats. DC actuation in air of these valves yielded operational voltages as low as 15V, by using a supporting structure above the valve seat that allowed sufficient restoring forces to be applied while not enhancing actuation forces to raise the valve actuation potential. Both actuate to open and actuate to close valves have been demonstrated, and integrated into a microfluidic platform, and demonstrated fluidic control using electrostatic valves.

Ten Eyck, Gregory A.; Branson, Eric D.; Kenis, Paul J. A. (University of Illinois, Champaign Urbana); Desai, Amit (University of Illinois, Champaign Urbana); Schudel, Ben (University of Illinois, Champaign Urbana); Givler, Richard C.; Tice, Josh (University of Illinois, Champaign Urbana); Collord, Andrew; Apblett, Christopher Alan; Cook, Adam W.

2009-09-01T23:59:59.000Z

350

Nuclear forces in the parity odd sector and the LS forces  

E-Print Network [OSTI]

In this paper, we report our first attempt at determining NN potentials in the parity odd sector including the spin-orbit force in lattice QCD, employing the method to extract successfully parity even NN potentials from Nambu-Bethe-Salpeter (NBS) wave functions through the Schr\\"odinger equation. Using Nf = 2 CP-PACS gauge configurations on a 16^3 x 32 lattice at a = 0.16 fm and m_\\pi \\cong 1.1 GeV, we calculate central, tensor and spin-orbit potentials in the parity odd sector. Although statistical errors are still large, we observe that the qualitative features of these potentials roughly agree with those of phenomenological potentials.

Keiko Murano; for the HALQCD Collaboration

2011-12-09T23:59:59.000Z

351

Heat transfer in forced cooled cables  

SciTech Connect (OSTI)

This paper presents a calculation method for current continuous rating of cable lines that considers the actual environment conditions, such as different types of soil, change of geometrical disposition, etc... This method is based on the resolution in terms of limit differences. The results of a full scale experimental installation, were used to check the theoretical model precision. The comparison between the measured and calculated rise show a difference of 5% in general and a maximum of 7% which may be considered acceptable for line design.

Lombardi, A.; Donazzi, F. (Societa Cavi Pirelli); Taralli, C.; Tencer, C.; Lima, A.J.O. (Pirelli S.A. Cia Indl Brasileira (BR))

1990-01-01T23:59:59.000Z

352

Academic Science Program Task Force Tuesday, September 27, 2011  

E-Print Network [OSTI]

, Malecha and Weiss); Jeff Braden and Ira Weiss expressed interest in meeting with the task force 11/04/11 3-4:30 p.m. Williams Hall, Room 2215 · Surveys (via Qualtrics) o Went out to department

353

Reduction of unsteady underwater propeller forces via active tail articulation  

E-Print Network [OSTI]

This study investigates the use of biologically-inspired tail articulation as a means to reduce unsteady propeller forces and by extension, noise due to stator wake blade interaction. This study is experimental in nature ...

James, Richard A. (Richard Alexander), 1982-

2006-01-01T23:59:59.000Z

354

LORENTZ SELF-FORCE OF AN ELLIPSE CURRENT LOOP MODEL  

SciTech Connect (OSTI)

In this work, the Lorentz self-force of an ellipse current loop model is derived. We are motivated by the fact that it has been reported in the literature that coronal mass ejection morphology can resemble an ellipse in the field of view of coronagraph images. Deriving the Lorentz self-force using an ellipse geometry has the advantage of being able to be solved analytically, as opposed to other more complex geometries. The derived ellipse model is compared with the local curvature approximation, where the Lorentz self-force at the ellipse major/minor axis is compared with the Lorentz self-force of a torus with curvature equal to the local curvature at the ellipses major/minor axis. It is found that the local curvature approximation is valid for moderate values of eccentricity.

Olmedo, Oscar [Space Sciences Division, Naval Research Laboratory, Washington, DC 20375 (United States); Zhang Jie; Kunkel, Valbona, E-mail: oscar.olmedo.ctr@nrl.navy.mil [School of Physics, Astronomy and Computational Sciences, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States)

2013-07-10T23:59:59.000Z

355

On advancement of high speed atomic force microscope technology  

E-Print Network [OSTI]

High speed atomic force microscopy (AFM) is a developing process in which nanoscale objects, such as crystal structures or strands of DNA, can be imaged at rates fast enough to watch processes as they occur. Although current ...

SooHoo, Kimberly E

2008-01-01T23:59:59.000Z

356

Generation of Dielectrophoretic Force under Uniform Electric Field  

E-Print Network [OSTI]

Effective dipole moment method has been widely accepted as the de facto technique in predicting the dielectrophoretic force due to the non-uniform electric field. In this method, a finite-particle is modeled as an equivalent ...

Kua, C.H.

357

Host nation security force development : a new roadmap  

E-Print Network [OSTI]

A new model concerning the concepts of host nation security force development, or security sector reform (SSR), is proposed. This model is rooted in scholarly literature and seeks to fill current gaps in United States Army ...

Fitzgerald, Shawn (Shawn Michael)

2013-01-01T23:59:59.000Z

358

air force pilots: Topics by E-print Network  

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

14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

359

air force pilot: Topics by E-print Network  

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

14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 21 The Air Force Research Laboratory (AFRL) Scholars Program is currently Computer Technologies and Information...

360

Generative morphologies of architectural organization in matter force field  

E-Print Network [OSTI]

This thesis investigates generative methods of architectural form finding in matter force fields that produce spatial subdivision and organizational variation. Unlike the style driven contemporary free-form architecture ...

Mutlu, Murat

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Design and analysis of a monolithic flexure atomic force microscope  

E-Print Network [OSTI]

This thesis details the design, manufacture, and testing of a sub-nanometer accuracy atomic force microscope. It was made to be integrated into the Sub-Atomic Measuring Machine (SAMM) in collaboration with the University ...

Ljubicic, Dean M

2008-01-01T23:59:59.000Z

362

Collective behaviors of the Casimir force in microelectromechanical systems  

SciTech Connect (OSTI)

Our goal was to explore the strong dependence of the Casimir force on the shape of the interacting bodies. We made significant progress and measured the Casimir force on silicon surface with rectangular corrugation and showed that the results agree with theoretical calculations, provided that the optical properties of silicon are taken into account. Furthermore, we performed measurement of the Casimir force within a single chip for the first time, between a doubly clamped beam and a movable, on-chip electrode at liquid helium temperature. This experiment represents a new way of studying the Casimir effect, a significant advance from the conventional approach of placing an external surface close to a force transducer.

Chan, H. B.; Yelton, J.

2013-01-23T23:59:59.000Z

363

Electrochemistry at the Nanoscale: The Force Dimension by Jennifer...  

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

ionic structure can be observed using force spectroscopy. Figures 4e and f show the ion density profiles for the cation (Fig. 4e) and anion (Fig. 4f), calculated by MD, as a...

364

ARI Task Force, ECA Work to Stimulate Regional Economies  

Broader source: Energy.gov [DOE]

WASHINGTON, D.C. DOEs Asset Revitalization Initiative (ARI) Task Force met with the Energy Communities Alliance (ECA) this week to advance the Departments processes for transferring excess land...

365

Task Force on Climate Preparedness and Resilience Announces Tribal...  

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

and Indian Country Webinar Series On July 16, at the fourth and final meeting of the White House State, Local, and Tribal Leaders Task Force on Climate Preparedness and...

366

Struts, springs and crumple zones: protein structures under force  

E-Print Network [OSTI]

energies indicating both that the discontinuous wild-?energies reported from optical tweezers experiments showed that unfolding of the wild-?energy of folding calculated when force was applied at residues 16 and 61 in the wild-?

Dill, Jesse

2012-01-01T23:59:59.000Z

367

On the Correlation between Forcing and Climate Sensitivity  

E-Print Network [OSTI]

The possible correlation between climate sensitivity and radiative forcing is studied using versions of the NCAR Community Atmospheric Model (CAM) model with different climate sensitivities. No such correlation was found ...

Sokolov, Andrei

368

Portfolio management in the Air Force : current status and opportunities  

E-Print Network [OSTI]

There are hundreds of weapons programs, under the management of the United States Air Force worth billions of dollars. These programs are being developed to fulfill a need in the U.S. defense strategy. Bringing these weapon ...

Morgan, Dave B

2011-01-01T23:59:59.000Z

369

A Generalized Predictive Force Controller for electropneumatic cylinders  

E-Print Network [OSTI]

and the number of control parameters is very reduced: the weighting coefficient and the prediction horizon and the valve are not taken into account. No studies of predictive force control of pneumatic actuators have

Paris-Sud XI, Université de

370

Renormalization and power counting of chiral nuclear forces  

SciTech Connect (OSTI)

I discuss the progress we have made on modifying Weinberg's prescription for chiral nuclear forces, using renormalization group invariance as the guideline. Some of the published results are presented.

Long, Bingwei [JLAB

2013-08-01T23:59:59.000Z

371

Orbital precession due to central-force perturbations  

E-Print Network [OSTI]

We calculate the precession of Keplerian orbits under the influence of arbitrary central-force perturbations. Our result is in the form of a one-dimensional integral that is straightforward to evaluate numerically. We demonstrate the effectiveness of our formula for the case of the Yukawa potential. We obtain analytic results for potentials of the form V(r) = \\alpha r^n and V(r) = \\alpha \\ln(r/\\lambda) in terms of the hypergeometric function {_2F_1} (1/2-n/2,1-n/2; 2; e^2), where e is the eccentricity. Our results reproduce the known general relativistic (n=-3), constant force (n=1), and cosmological constant (n=2) precession formulas. Planetary precessions are often used to constrain the sizes of hypothetical new weak forces--our results allow for more precise, and often stronger, constraints on such proposed new forces.

Gregory S. Adkins; Jordan McDonnell

2007-02-02T23:59:59.000Z

372

United States of America Electric Energy Market Competition Task Force  

E-Print Network [OSTI]

, appointed by the Secretary of Energy; and (5) an employee of the Rural Utilities Service, appointedi United States of America Electric Energy Market Competition Task Force and the Federal Energy and Retail Markets for Electric Energy Docket No. AD05

Tesfatsion, Leigh

373

Modeling and control of undesirable dynamics in atomic force microscopes  

E-Print Network [OSTI]

The phenomenal resolution and versatility of the atomic force microscope (AFM), has made it a widely-used instrument in nanotechnology. In this thesis, a detailed model of AFM dynamics has been developed. It includes a new ...

El Rifai, Osamah M

2002-01-01T23:59:59.000Z

374

INTERIM REPORT OF THE TASK FORCE ON DOE NATIONAL LABORATORIES  

Broader source: Energy.gov [DOE]

The SEAB Task Force on DOE National Laboratories was established by the Secretary of Energy on June 16, 2014, to provide advice, guidance, and recommendations onimportant issues related to...

375

Force Field Parameter Estimation of Functional Perfluoropolyether Lubricants  

SciTech Connect (OSTI)

The head disk interface in hard disk drive can be considered one of the hierarchical multiscale systems, which require the hybridization of multiscale modeling methods with coarse-graining procedure. However, the fundamental force field parameters are required to enable the coarse-graining procedure from atomistic/molecular scale to mesoscale models .In this paper, we investigate beyond molecular level and perform ab-initio calculations to obtain the force field parameters. Intramolecular force field parameters for the Zdol and Ztetraol were evaluated with truncated PFPE molecules to allow for feasible quantum calculations while still maintaining the characteristic chemical structure of the end groups. Using the harmonic approximation to the bond and angle potentials, the parameters were derived from the Hessian matrix, and the dihedral force constants are fit to the torsional energy profiles generated by a series of constrained molecular geometry optimization.

Smith, R.; Chung, P.S; Steckel, J.A.; Jhon, M.S; Biegler, L.T.

2011-01-01T23:59:59.000Z

376

Force Field Parameter Estimation of Functional Perfluoropolyether Lubricants  

SciTech Connect (OSTI)

The head disk interface in a hard disk drive can be considered to be one of the hierarchical multiscale systems, which require the hybridization of multiscale modeling methods with coarse-graining procedure. However, the fundamental force field parameters are required to enable the coarse-graining procedure from atomistic/molecular scale to mesoscale models. In this paper, we investigate beyond molecular level and perform ab initio calculations to obtain the force field parameters. Intramolecular force field parameters for Zdol and Ztetraol were evaluated with truncated PFPE molecules to allow for feasible quantum calculations while still maintaining the characteristic chemical structure of the end groups. Using the harmonic approximation to the bond and angle potentials, the parameters were derived from the Hessian matrix, and the dihedral force constants are fit to the torsional energy profiles generated by a series of constrained molecular geometry optimization.

Smith, R.; Chung, P.S.; Steckel, J; Jhon, M.S.; Biegler, L.T.

2011-01-01T23:59:59.000Z

377

Dissipative force on an external quark in heavy quark cloud  

E-Print Network [OSTI]

Within the finite temperature N = 4 strongly coupled super Yang- Mills, we compute the dissipative force on an external quark in the presence of evenly distributed heavy quark cloud. This is computed holographically by constructing the corresponding gravity dual. We study the behaviour of this force as a function of the cloud density. Along the way we also analyze the stability of the gravity dual for vector and tensor perturbations.

Shankhadeep Chakrabortty

2011-10-01T23:59:59.000Z

378

Ion pump activity generates fluctuating electrostatic forces in biomembranes  

E-Print Network [OSTI]

We study the non-equilibrium dynamics of lipid membranes with proteins that actively pump ions across the membrane. We find that the activity leads to a fluctuating force distribution due to electrostatic interactions arising from variation in dielectric constant across the membrane. By applying a multipole expansion we find effects on both the tension and bending rigidity dominated parts of the membranes fluctuation spectrum. We discuss how our model compares with previous studies of force-multipole models.

B. Loubet; M. A. Lomholt

2011-09-19T23:59:59.000Z

379

Casimir forces in a Plasma: Possible Connections to Yukawa Potentials  

E-Print Network [OSTI]

We present theoretical and numerical results for the screened Casimir effect between perfect metal surfaces in a plasma. We show how the Casimir effect in an electron-positron plasma can provide an important contribution to nuclear interactions. Our results suggest that there is a connection between Casimir forces and nucleon forces mediated by mesons. Correct nuclear energies and meson masses appear to emerge naturally from the screened Casimir-Lifshitz effect.

Barry W. Ninham; Mathias Bostrm; Clas Persson; Iver Brevik; Stefan Y. Buhmann; Bo E. Sernelius

2014-09-03T23:59:59.000Z

380

E-Print Network 3.0 - air force landfill Sample Search Results  

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

Driving Forces towards Materials... lack of Waste-to-Energy capacity. 12;9 Austria As Germany, but Ban in force already in 2002. Landfill... Landfill Ban in force already in...

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Transfer of Air Force technical procurement bid set data to small businesses, using CALS and EDI: Test report  

SciTech Connect (OSTI)

This report documents a test transfer of three Air Force technical procurement bid sets to one large and twelve small businesses, using the Department of Defense (DoD) Continuous Acquisition and Life-cycle Support (CALS) and ANSI ASC X12 Electronic Data Interchange (EDI) standards. The main goal of the test was to evaluate the effectiveness of using CALS technical data within the context of the DoD`s EDI-based standard approach to electronic commerce in procurement, with particular emphasis on receipt and use of the data by small contractors. Air Force procurement data was provided by the Sacramento Air Logistics Center at McClellan Air Force Base; the manufacturing participants were selected from among McClellan`s ``Blue Ribbon`` contractors, located throughout the US. The test was sponsored by the Air Force CALS Test Network, headquartered at Wright-Patterson Air Force Base. The test successfully demonstrated the technical feasibility of including CALS MIL-R-28002 (Raster) engineering data in an EDI Specification/Technical Information transaction set (ANSI ASC X12 841) when issuing electronic requests for quotation to small businesses. In many cases, the data was complete enough for the contractor participant to feel comfortable generating a quote. Lessons learned from the test are being fed back to the CALS and EDI standards organizations, and to future implementors of CALS-EDI based acquisition or contracting systems, which require the transfer of technical information, such as engineering data, manufacturing process data, quality test data, and other product or process data, in the form of a CALS or other digital datafile.

NONE

1994-08-15T23:59:59.000Z

382

Implementing Nonlinear Buoyancy and Excitation Forces in the WEC-Sim Wave Energy Converter Modeling Tool: Preprint  

SciTech Connect (OSTI)

Wave energy converters (WECs) are commonly designed and analyzed using numerical models that combine multi-body dynamics with hydrodynamic models based on the Cummins Equation and linearized hydrodynamic coefficients. These modeling methods are attractive design tools because they are computationally inexpensive and do not require the use of high performance computing resources necessitated by high-fidelity methods, such as Navier Stokes computational fluid dynamics. Modeling hydrodynamics using linear coefficients assumes that the device undergoes small motions and that the wetted surface area of the devices is approximately constant. WEC devices, however, are typically designed to undergo large motions in order to maximize power extraction, calling into question the validity of assuming that linear hydrodynamic models accurately capture the relevant fluid-structure interactions. In this paper, we study how calculating buoyancy and Froude-Krylov forces from the instantaneous position of a WEC device (referred to as instantaneous buoyancy and Froude-Krylov forces from herein) changes WEC simulation results compared to simulations that use linear hydrodynamic coefficients. First, we describe the WEC-Sim tool used to perform simulations and how the ability to model instantaneous forces was incorporated into WEC-Sim. We then use a simplified one-body WEC device to validate the model and to demonstrate how accounting for these instantaneously calculated forces affects the accuracy of simulation results, such as device motions, hydrodynamic forces, and power generation.

Lawson, M.; Yu, Y. H.; Nelessen, A.; Ruehl, K.; Michelen, C.

2014-05-01T23:59:59.000Z

383

E-Print Network 3.0 - association task force Sample Search Results  

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

Report Summary: November 2000 Remanufactured Device Task Force Releases Report By Juana Williams In August 2000... , the Remanufactured Device Task Force to the NCWM...

384

E-Print Network 3.0 - atom-wall dispersive forces Sample Search...  

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

class force subordinates to disperse farther, and (2... subordinate males for available resources and effectively force males to disperse farther from the natal area......

385

E-Print Network 3.0 - aerosol radiative forcing Sample Search...  

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

No. DE- Summary: : WHY MEASUREMENTS ALONE CANNOT QUANTIFY AEROSOL RADIATIVE FORCING OF CLIMATE CHANGE Stephen E. Schwartz... of radiative forcing of climate change by aerosols,...

386

E-Print Network 3.0 - applying electric forces Sample Search...  

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

electric forces Search Powered by Explorit Topic List Advanced Search Sample search results for: applying electric forces Page: << < 1 2 3 4 5 > >> 1 Interference between electric...

387

E-Print Network 3.0 - assessment task force Sample Search Results  

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

static and dynamic force matching tasks. We performed maximum... force production and perception in simplified ... Source: Ferris, Dan - Human Neuromechanics Laboratory,...

388

E-Print Network 3.0 - air force personnel Sample Search Results  

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

in an actual Summary: components: personnel and technological interventions. In terms of personnel interventions, the Air Force... of the Air Force's culture and mission,...

389

E-Print Network 3.0 - applied mechanical force Sample Search...  

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

mechanical force Search Powered by Explorit Topic List Advanced Search Sample search results for: applied mechanical force Page: << < 1 2 3 4 5 > >> 1 Mechanical Engineering...

390

Report of the SEAB Task Force on Technology Development for Environmen...  

Office of Environmental Management (EM)

Report of the SEAB Task Force on Technology Development for Environmental Management. Report of the SEAB Task Force on Technology Development for Environmental Management. This...

391

E-Print Network 3.0 - air force enlisted Sample Search Results  

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

Summary: , Marines, and Air Force Spend Hundreds of Millions of Dollars Annually on Advertising... clients include the Air Force Reserve, Department of Veteran Affairs and...

392

E-Print Network 3.0 - air force 611th Sample Search Results  

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

to be a likely driving force... ; these forces may also have been contributing to entrainment of fume hood air into the general room exhaust. 12;... indoor air quality...

393

E-Print Network 3.0 - air force family Sample Search Results  

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

to be a likely driving force... ; these forces may also have been contributing to entrainment of fume hood air into the general room exhaust. 12;... indoor air quality...

394

E-Print Network 3.0 - air force research Sample Search Results  

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

to be a likely driving force... ; these forces may also have been contributing to entrainment of fume hood air into the general room exhaust. 12;... --- Research by...

395

E-Print Network 3.0 - air force systems Sample Search Results  

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

to be a likely driving force... ; these forces may also have been contributing to entrainment of fume hood air into the general room exhaust. 12;... indoor air quality...

396

Ab-initio friction forces on the nanoscale: A DFT study of fcc Cu(111)  

E-Print Network [OSTI]

While there are a number of models that tackle the problem of calculating friction forces on the atomic level, providing a completely parameter-free approach remains a challenge. Here we present a quasi-static model to obtain an approximation to the nanofrictional response of dry, wearless systems based on quantum mechanical all-electron calculations. We propose a mechanism to allow dissipative sliding, which relies on atomic relaxations. We define two different ways of calculating the mean nanofriction force, both leading to an exponential friction-versus-load behavior for all sliding directions. Since our approach does not impose any limits on lengths and directions of the sliding paths, we investigate arbitrary sliding directions for an fcc Cu(111) interface and detect two periodic paths which form the upper and lower bound of nanofriction. For long aperiodic paths the friction force convergences to a value in between these limits. For low loads we retrieve the Derjaguin generalization of Amontons-Coulomb kinetic friction law which appears to be valid all the way down to the nanoscale. We observe a non-vanishing Derjaguin-offset even for atomically flat surfaces in dry contact.

Michael Wolloch; Gregor Feldbauer; Peter Mohn; Josef Redinger; Andrs Vernes

2014-08-26T23:59:59.000Z

397

Adjustable virtual pore-size filter for automated sample preparation using acoustic radiation force  

SciTech Connect (OSTI)

We present a rapid and robust size-based separation method for high throughput microfluidic devices using acoustic radiation force. We developed a finite element modeling tool to predict the two-dimensional acoustic radiation force field perpendicular to the flow direction in microfluidic devices. Here we compare the results from this model with experimental parametric studies including variations of the PZT driving frequencies and voltages as well as various particle sizes and compressidensities. These experimental parametric studies also provide insight into the development of an adjustable 'virtual' pore-size filter as well as optimal operating conditions for various microparticle sizes. We demonstrated the separation of Saccharomyces cerevisiae and MS2 bacteriophage using acoustic focusing. The acoustic radiation force did not affect the MS2 viruses, and their concentration profile remained unchanged. With optimized design of our microfluidic flow system we were able to achieve yields of > 90% for the MS2 with > 80% of the S. cerevisiae being removed in this continuous-flow sample preparation device.

Jung, B; Fisher, K; Ness, K; Rose, K; Mariella, R

2008-05-22T23:59:59.000Z

398

Self-consistent Green's functions with three-body forces  

E-Print Network [OSTI]

The present thesis aims at studying the properties of symmetric nuclear and pure neutron matter from a Green's functions point of view, including two-body and three-body chiral forces. An extended self-consistent Green's function formalism is defined to consistently incorporate three-body forces in the many-body calculations. The effect of three-nucleon interactions is included via the construction of a dressed two-body density dependent force. This is obtained performing an average of the leading order three-body terms in the chiral effective field theory expansion. The dressed force corresponds to the use of an in-medium propagator in the average which takes into account the correlations characterizing the system at each stage of the many-body calculation. The total energy of the system is obtained by means of a modified Galitskii-Migdal-Koltun sumrule to correctly account for the effect of three-body forces. Microscopic as well as macroscopic properties of symmetric nuclear and pure neutron matter are analyzed in detailed.

Arianna Carbone

2014-07-24T23:59:59.000Z

399

First interim report of the Federal Fleet Conversion Task Force  

SciTech Connect (OSTI)

The Federal Fleet Conversion Task Force was created by Executive Order 12844, signed by President Clinton on April 21, 1993. In the Order, the President directed that purchases of alternative fueled vehicles by the Federal Government be substantially increased beyond the levels required by current law. The President charged the Task Force with developing recommendations for carrying out the Executive Order, with special emphasis on setting a course that will lead to the widespread use of alternative fueled vehicles by Federal, State, and local government fleets, by private fleets and, ultimately, by individuals. The chief recommendation of the Task Force is the establishment of a Presidential Clean Cities Initiative. To support creation of the Presidential Initiative, the Task Force identified 38 cities and regions, prioritized into three tiers, for concentrating the Initiative`s efforts in Fiscal Years 1994 through 1996. This concentration of effort is key to the effectiveness of the Initiative. The 38 cities and regions would receive priority funding for Federal vehicle purchases and for infrastructure development. In addition, the Task Force has made specific recommendations for overcoming numerous regulatory, economic, and technical barriers that have slowed the introduction of alternative fueled vehicles into general use.

Not Available

1993-08-01T23:59:59.000Z

400

International PV QA Task Force's Proposed Comparative Rating System for PV Modules: Preprint  

SciTech Connect (OSTI)

The International PV Quality Assurance Task Force is developing a rating system that provides comparative information about the relative durability of PV modules. Development of accelerated stress tests that can provide such comparative information is seen as a major step toward being able to predict PV module service life. This paper will provide details of the ongoing effort to determine the format of such an overall module rating system. The latest proposal is based on using three distinct climate zones as defined in IEC 60721-2-1 for two different mounting systems. Specific stresses beyond those used in the qualification tests are being developed for each of the selected climate zones.

Wohlgemuth, J.; Kurtz, S.

2014-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

E-Print Network 3.0 - amplifies stent-based drug Sample Search...  

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

IN STENT-BASED DRUG DELIVERY Giuseppe Pontrelli*, Filippo de Monte** *IAC... . Hwang, D. Wu, E.R. Edelman, Physiological transport forces govern drug...

402

Does The 3N-Force Have A Hard Core?  

E-Print Network [OSTI]

The meson-nucleon dynamics that generates the hard core of the RuhrPot two-nucleon interaction is shown to vanish in the irreducible 3N force. This result indicates a small 3N force dominated by conventional light meson-exchange dynamics and holds for an arbitrary meson-theoretic Lagrangian. The resulting RuhrPot 3N force is defined in the appendix. A completely different result is expected when the Tamm-Dancoff/Bloch-Horowitz procedure is used to define the NN and 3N potentials. In that approach, (e.g. full Bonn potential) both the NN {\\it and} 3N potentials contain non-vanishing contributions from the coherent sum of meson-recoil dynamics and the possibility of a large hard core requiring explicit calculation cannot be ruled out.

J. A. Eden; M. F. Gari

1996-01-17T23:59:59.000Z

403

Unitary approach to the quantum forced harmonic oscillator  

E-Print Network [OSTI]

In this paper we introduce an alternative approach to studying the evolution of a quantum harmonic oscillator subject to an arbitrary time dependent force. With the purpose of finding the evolution operator, certain unitary transformations are applied successively to Schr\\"odinger's equation reducing it to its simplest form. Therefore, instead of solving the original Schr\\"odinger's partial differential equation in time and space the problem is replaced by a system of ordinary differential equations. From the obtained evolution operator we workout the propagator. Even though we illustrate the use of unitary transformations on the solution of a forced harmonic oscillator, the method presented here might be used to solve more complex systems. The present work addresses many aspects regarding unitary transformations and the dynamics of a forced quantum harmonic oscillator that should be useful for students and tutors of the quantum mechanics courses at the senior undergraduate and graduate level.

D. Velasco-Martinez; V. G. Ibarra-Sierra; J. C. Sandoval-Santana; J. L. Cardoso; A. Kunold

2014-08-31T23:59:59.000Z

404

Determining the role of hydration forces in protein folding  

SciTech Connect (OSTI)

One of the primary issues in protein folding is determining what forces drive folding and eventually stabilize the native state. A delicate balance exists between electrostatic forces such as hydrogen bonding and salt bridges, and the hydrophobic effect, which are present for both intramolecular protein interactions and intermolecular contributions with the surrounding aqueous environment. This article describes a combined experimental, theoretical, and computational effort to show how the complexity of aqueous hydration can influence the structure, folding and aggregation, and stability of model protein systems. The unification of the theoretical and experimental work is the development or discovery of effective amino acid interactions that implicitly include the effects of aqueous solvent. The authors show that consideration of the full range of complexity of aqueous hydration forces such as many-body effects, long-ranged character of aqueous solvation, and the assumptions made about the degree of protein hydrophobicity can directly impact the observed structure, folding, and stability of model protein systems.

Sorenson, J.M. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry] [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Hura, G. [Univ. of California, Berkeley, CA (United States)] [Univ. of California, Berkeley, CA (United States); [Lawrence Berkeley National Lab., CA (United States). Life Sciences Div.; Soper, A.K. [Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Facility] [Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Facility; Pertsemlidis, A. [Univ. of Texas Southwestern Medical Center, Dallas, TX (United States). Dept. of Biochemistry] [Univ. of Texas Southwestern Medical Center, Dallas, TX (United States). Dept. of Biochemistry; Head-Gordon, T. [Lawrence Berkeley National Lab., CA (United States)] [Lawrence Berkeley National Lab., CA (United States)

1999-07-01T23:59:59.000Z

405

Force and heat current formulas for many-body potentials in molecular dynamics simulation with applications to thermal conductivity calculations  

E-Print Network [OSTI]

We derive expressions of interatomic force and heat current for many-body potentials such as the Tersoff, the Brenner, and the Stillinger-Weber potential used extensively in molecular dynamics simulations of covalently bonded materials. Although these potentials have a many-body nature, a pairwise force expression that follows Newton's third law can be found without referring to any partition of the potential. Based on this force formula, a stress applicable for periodic systems can be unambiguously defined. The force formula can then be used to derive the heat current formulas using a natural potential partitioning. Our heat current formulation is found to be equivalent to most of the seemingly different heat current formulas used in the literature, but to deviate from the stress-based formula derived from two-body potential. We validate our formulation numerically on various systems descried by the Tersoff potential, namely three-dimensional silicon and diamond, two-dimensional graphene, and quasi-one-dimen...

Fan, Zheyong; Wang, Hui-Qiong; Zheng, Jin-Cheng; Donadio, Davide; Harju, Ari

2015-01-01T23:59:59.000Z

406

SRS reactor control rod cooling without normal forced convection cooling  

SciTech Connect (OSTI)

This paper describes an analytical study of the coolability of the control rods in the Savannah River site (SRS) K production reactor under conditions of loss of normal forced convection cooling. The study was performed as part of the overall safety analysis of the reactor supporting its restart. The analysis addresses the buoyancy-driven boiling flow over the control rods that occurs when forced cooling is lost. The objective of the study was to demonstrate that the control rods will remain cooled (i.e., no melting) at powers representative of those anticipated for restart of the reactor.

Smith, D.C. (SAIC, Albuquerque, NM (United States)); Easterling, T.C. (Westinghouse Savannah River Co., Aiken, SC (United States))

1993-01-01T23:59:59.000Z

407

A channel Brownian pump powered by an unbiased external force  

E-Print Network [OSTI]

A Brownian pump of particles in an asymmetric finite tube is investigated in the presence of an unbiased external force. The pumping system is bounded by two particle reservoirs. It is found that the particles can be pumped through the tube from a reservoir at low concentration to one at the same or higher concentration. There exists an optimized value of temperature (or the amplitude of the external force) at which the pumping capacity takes its maximum value. The pumping capacity decreases with increasing the radius at the bottleneck of the tube.

Bao-quan Ai; Liang-gang Liu

2010-03-22T23:59:59.000Z

408

Spatial synchronization and extinction of species under external forcing  

E-Print Network [OSTI]

We study the interplay between synchronization and extinction of a species. Using a general model we show that under a common external forcing, the species with a quadratic saturation term in the population dynamics first undergoes spatial synchronization and then extinction, thereby avoiding the rescue effect. This is because the saturation term reduces the synchronization time scale but not the extinction time scale. The effect can be observed even when the external forcing acts only on some locations provided there is a synchronizing term in the dynamics. Absence of the quadratic saturation term can help the species to avoid extinction.

R. E. Amritkar; Govindan Rangarajan

2006-02-20T23:59:59.000Z

409

Atomistic force field for alumina fit to density functional theory  

SciTech Connect (OSTI)

We present a force field for bulk alumina (Al{sub 2}O{sub 3}), which has been parametrized by fitting the energies, forces, and stresses of a large database of reference configurations to those calculated with density functional theory (DFT). We use a functional form that is simpler and computationally more efficient than some existing models of alumina parametrized by a similar technique. Nevertheless, we demonstrate an accuracy of our potential that is comparable to those existing models and to DFT. We present calculations of crystal structures and energies, elastic constants, phonon spectra, thermal expansion, and point defect formation energies.

Sarsam, Joanne [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom) [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom); Thomas Young Centre, Imperial College London, London SW7 2AZ (United Kingdom); Finnis, Michael W.; Tangney, Paul, E-mail: p.tangney@imperial.ac.uk [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom) [Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom); Thomas Young Centre, Imperial College London, London SW7 2AZ (United Kingdom); Department of Physics, Imperial College London, London SW7 2AZ (United Kingdom)

2013-11-28T23:59:59.000Z

410

The mechano-chemistry of cytoskeletal force generation  

E-Print Network [OSTI]

In this communication, we propose a model to study the non-equilibrium process by which actin stress fibers develop force in contractile cells. The emphasis here is on the non-equilibrium thermodynamics, which is necessary to address the mechanics as well as the chemistry of dynamic cell contractility. In this setting we are able to develop a framework that relates (a) the dynamics of force generation within the cell and (b) the cell response to external stimuli to the chemical processes occurring within the cell, as well as to the mechanics of linkage between the stress fibers, focal adhesions and extra-cellular matrix.

Mirko Maraldi; Krishna Garikipati

2014-04-23T23:59:59.000Z

411

Wave induced forces on a partially exposed circular cylinder  

E-Print Network [OSTI]

analyzed to give a dimensionless force which was related to the wave parameters H/L and d/L. Other methods of analysis were also used for the derivation of drag, inertia, and lift coefficients for use with various forms of the Norison Equation. RCKHOI... = Fluid Density A = Area of Hodel u = Horizontal Hater Particle Velocity x In a study conducted by Chakrabarti (9), the data presented by Shank and Herbich were analyzed by a different method, namely a closed form expression for the wave forces. Only...

Parker, Michael Edward

1977-01-01T23:59:59.000Z

412

Magnus force in discrete and continuous two-dimensional superfluids  

SciTech Connect (OSTI)

Motion of vortices in two-dimensional superfluids in the classical limit is studied by solving the Gross-Pitaevskii equation numerically on a uniform lattice. We find that, in the presence of a superflow directed along one of the main lattice periods, vortices move with the superflow on fine lattices but perpendicular to it on coarse ones. We interpret this result as a transition from the full Magnus force in a Galilean-invariant limit to vanishing effective Magnus force in a discrete system, in agreement with the existing experiments on vortex motion in Josephson junction arrays.

Gecse, Z.; Khlebnikov, S. [Department of Physics, Purdue University, West Lafayette, Indiana 47907 (United States)

2005-08-01T23:59:59.000Z

413

On transition from Alfvn resonance to forced magnetic reconnection  

SciTech Connect (OSTI)

We revisit the transition from Alfvn resonance to forced magnetic reconnection with a focus on the property of their singularities. As the driven frequency tends to zero, the logarithmic singularity of Alfvn resonance shifts to the power-law singularity of forced reconnection, due to merging of the two resonance layers. The transition criterion depends on either kinetic effects or dissipations that resolve the singularity. As an example, a small but finite resistivity ? is introduced to investigate the transition process. The transition threshold is then obtained as the driven frequency reaches a level of ?O((?/k){sup 1/3})

Luan, Q. [MOE Key Lab of Materials Modification by Beams and School of Physics and Optoelectrical Technology, Dalian University of Technology, Dalian 116024 (China); Wang, X., E-mail: xgwang@hit.edu.cn [Department of Physics, Harbin Institute of Technology, Harbin 150001 (China)

2014-07-15T23:59:59.000Z

414

Spin contribution to the ponderomotive force in a plasma  

E-Print Network [OSTI]

The concept of a ponderomotive force due to the intrinsic spin of electrons is developed. An expression containing both the classical as well as the spin-induced ponderomotive force is derived. The results are used to demonstrate that an electromagnetic pulse can induce a spin-polarized plasma. Furthermore, it is shown that for certain parameters, the nonlinear back-reaction on the electromagnetic pulse from the spin magnetization current can be larger than that from the classical free current. Suitable parameter values for a direct test of this effect are presented.

G. Brodin; A. P. Misra; M. Marklund

2010-07-30T23:59:59.000Z

415

Force and stroke of a hydrogel actuator Widusha R. K. Illeperuma,ab  

E-Print Network [OSTI]

Force and stroke of a hydrogel actuator Widusha R. K. Illeperuma,ab Jeong-Yun Sun,ab Zhigang Suoab material is normally characterized by its force­stroke curve, but little is known about the force­stroke behavior of hydrogels. We use the theory of the ideal elastomeric gel to predict the force­stroke curves

Suo, Zhigang

416

Force microscopy of layering and friction in an ionic liquid Judith Hotha,b  

E-Print Network [OSTI]

shape of the force vs. distance curve is explained by a model for the interaction between tip, gold of the compliant force sensor between branches of the oscillatory force curve. Frictional force between-viscosity, yet load- bearing lubricant [1-4]. The load-bearing ability stems from the formation of solvation

Mueser, Martin

417

An exact solution for the Casimir force in a spherically symmetric medium  

E-Print Network [OSTI]

We calculated the force of the quantum vacuum, the Casimir force, in a spherically symmetric medium, Maxwell's fish eye, surrounded by a perfect mirror and derived an exact analytic solution. Our solution questions the idea that the Casimir force of a spherical mirror is repulsive - we found an attractive force that diverges at the mirror.

Ulf Leonhardt; William M. R. Simpson

2011-07-03T23:59:59.000Z

418

Physics Based on Physical Monism  

E-Print Network [OSTI]

Based on a physical monism, which holds that the matter and space are classified by not a difference of their kind but a difference of magnitude of their density, I derive the most fundamental equation of motion, which is capable of providing a deeper physical understanding than the known physics. For example, this equation answers to the substantive reason of movement, and Newton's second law, which has been regarded as the definition of force, is derived in a substantive level from this equation. Further, the relativistic energy-mass formula is generalized to include the potential energy term, and the Lorentz force and Maxwell equations are newly derived.

Seong-Dong Kim

2005-09-08T23:59:59.000Z

419

Solar Forcing of Regional Climate Change During the  

E-Print Network [OSTI]

Solar Forcing of Regional Climate Change During the Maunder Minimum Drew T. Shindell,1 Gavin A. Schmidt,1 Michael E. Mann,2 David Rind,1 Anne Waple3 We examine the climate response to solar irradiance long-term solar varia- tion, which would give a larger climate re- sponse (15). Initial conditions were

420

Wave forces on a large submerged hemispherical object  

E-Print Network [OSTI]

Horizontal Load Cells . Vertical Load Ce13s Pleaiglas Pulleys Figure 4. Hen. ispHerical ~. Ve force niodel. 13 horizontal wires out from underneath the model and along the tank's hori. zontal axis. In order to measure the pressure fluctuati. on inside...

Snider, Robert Hoyd

1970-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Observations of remote and local forcing in Galveston Bay, Texas  

E-Print Network [OSTI]

A high quality set of 321 days of sea level and wind records and of 126 days of current records, from winter to spring, has been used to examine the relative importance of remote and local forcing on the subtidal response in Galveston Bay, Texas...

Guannel, Gregory

2001-01-01T23:59:59.000Z

422

Design and construction of a magnetic force microscope  

E-Print Network [OSTI]

) ............................................. 11 II. USES OF MFM....................................................................................... 16 A. Overview...................................................................................... 16 B. MFM on superconductors... the sample and the tip is useful to ensure the dominance of magnetic force term. The other popular method to ensure that this is the case is called ?Plane Scan?. One of the first uses of this technique was to image vortices in YBCO superconductors.11...

Khandekar, Sameer Sudhakar

2005-08-29T23:59:59.000Z

423

Multi-dimensional Longwave Forcing of Boundary Layer Cloud Systems  

SciTech Connect (OSTI)

The importance of multi-dimensional (MD) longwave radiative effects on cloud dynamics is evaluated in a large eddy simulation (LES) framework employing multi-dimensional radiative transfer (Spherical Harmonics Discrete Ordinate Method SHDOM). Simulations are performed for a case of unbroken, marine boundary layer stratocumulus and a broken field of trade cumulus. Snapshot calculations of MD and IPA (independent pixel approximation 1D) radiative transfer applied to LES cloud fields show that the total radiative forcing changes only slightly, although the MD effects significantly modify the spatial structure of the radiative forcing. Simulations of each cloud type employing MD and IPA radiative transfer, however, differ little. For the solid cloud case, relative to using IPA, the MD simulation exhibits a slight reduction in entrainment rate and boundary layer TKE relative to the IPA simulation. This reduction is consistent with both the slight decrease in net radiative forcing and a negative correlation between local vertical velocity and radiative forcing, which implies a damping of boundary layer eddies. Snapshot calculations of the broken cloud case suggest a slight increase in radiative cooling, though few systematic differences are noted in the interactive simulations. We attribute this result to the fact that radiative cooling is a relatively minor contribution to the total energetics. For the cloud systems in this study, the use of IPA longwave radiative transfer is sufficiently accurate to capture the dynamical behavior of BL clouds. Further investigations are required in order to generalize this conclusion for other cloud types and longer time integrations. 1

Mechem, David B.; Kogan, Y. L.; Ovtchinnikov, Mikhail; Davis, Anthony B; Evans, K. F.; Ellingson, Robert G.

2008-12-20T23:59:59.000Z

424

Force-Induced Unzipping Transitions in an Athermal Crowded Environment  

E-Print Network [OSTI]

Force-Induced Unzipping Transitions in an Athermal Crowded Environment David L. Pincus and D was recognized long ago.21 It is now widely appreciated that the cytosol is a crowded heterogeneous medium, and other biological processes in such an environment could be different from what transpires under infinite

Thirumalai, Devarajan

425

Furlough or Reduction in Force in the Senior Executive Service  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish requirements and assign responsibilities for furlough and reduction in force (RIF) of the Senior Executive Service (SES) in the Department of Energy (DOE) and the National Nuclear Security Administration (NNSA). Cancels O DOE 3350.1 Chg 1 and DOE 3351.2 Chg 1.

2003-05-15T23:59:59.000Z

426

Oscillatory Solvation Forces: A Comparison of Theory and  

E-Print Network [OSTI]

of liquid structure 62.10.+s Mechanical properties of liquids 68.15.+e Liquid thin films 68.45.Nj Mechanical and acoustical properties of solid­ fluid interfaces I. Introduction The measurement of the force between mica of the molecular detail it pro­ vides about the behaviour of surfaces and fluids, but also because the measurements

Attard, Phil

427

Sensorless Robot Collision Detection and Hybrid Force/Motion Control  

E-Print Network [OSTI]

a lightweight robot design [6], possibly with distributed compliant characteristics in the driving system andSensorless Robot Collision Detection and Hybrid Force/Motion Control Alessandro De Luca Raffaella-time detection of collisions between a robot manipulator and obstacles of unknown geometry and location

De Luca, Alessandro

428

Quantized friction force: Lindbladian model satisfying Ehrenfest theorems  

E-Print Network [OSTI]

We construct a quantum counterpart of classical friction, a dissipative force acting against the direction of motion with the magnitude proportional to particle's velocity. In particular, a Lindblad master equation is derived satisfying the appropriate dynamical relations for observables (i.e., the Ehrenfest theorems). These findings significantly advance a long search for a universal valid Lindbladian model of quantum friction.

Denys I. Bondar; Renan Cabrera; Andre Campos; Herschel A. Rabitz

2014-12-05T23:59:59.000Z

429

Urban Consortium Energy Task Force - Year 21 Final Report  

SciTech Connect (OSTI)

The Urban Consortium Energy Task Force (UCETF), comprised of representatives of large cities and counties in the United States, is a subgroup of the Urban Consortium, an organization of the nation's largest cities and counties joined together to identify, develop and deploy innovative approaches and technological solutions to pressing urban issues.

NONE

2003-04-01T23:59:59.000Z

430

People Tracking with Human Motion Predictions from Social Forces  

E-Print Network [OSTI]

People Tracking with Human Motion Predictions from Social Forces Matthias Luber Johannes A. Stork Gian Diego Tipaldi Kai O. Arras Abstract-- For many tasks in populated environ- ments, robots need to keep track of current and future motion states of people. Most approaches to people tracking make weak

Arras, Kai O.

431

Guide for Establishment of a Contingency Protective Force  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide was developed to provide assistance in ensuring continued safe and secure operation of DOE sites and facilities, protection of Departmental employees, and the public in the event of emergency situations involving the establishment and deployment of a contingency protective force and the conduct of sustained operations. Canceled by DOE N 251.80.

2003-03-27T23:59:59.000Z

432

On Cavitation, Configurational Forces and Implications for Fracture in  

E-Print Network [OSTI]

On Cavitation, Configurational Forces and Implications for Fracture in a Nonlinearly Elastic tensile stress can induce cavitation, that is, the appearance of voids that were not previously evident con- sequence of this viewpoint is that cavitation may then take place at a point

Sivaloganathan, J.

433

FORCES ANALYSIS FOR MICROMANIPULATIONS IN DRY AND LIQUID MEDIA  

E-Print Network [OSTI]

affect the micromanipulation task and especially the release of the micro- object. The frontier generating the modification of the micro-object behaviour (from a behaviour domi- nated by surface forces, and the surrounding medium. In most cases, this frontier corresponds to the specific dimension of the micro

Paris-Sud XI, Université de

434

Reduction in Work Force Unclassified Staff Office of Human Resources  

E-Print Network [OSTI]

Reduction in Work Force Unclassified Staff 9.15 Office of Human Resources Applies to: Regular by the Health System. Health System employees should contact their human resource department for further information. The Ohio State University Office of Human Resources Page 1 of 1 Policy 9.15 Reduction in Work

Howat, Ian M.

435

HURRICANE INDUCED WAVE AND SURGE FORCES ON BRIDGE DECKS  

E-Print Network [OSTI]

in the Gulf of Mexico. The combination of storm surge and high waves caused by a hurricane can produce substantial loads on bridge decks leading to complete bridge failure. Several theoretical methods have been developed to estimate these forces but have...

McPherson, Ronald L.

2010-01-16T23:59:59.000Z

436

Forces on a magnet moving past figure-eight coils  

SciTech Connect (OSTI)

For the first time, the lift, drag, and guidance forces acting on a permanent magnet are measured as the magnet passes over different arrays of figure-eight (null-flux) coils. The experimental results are in good agreement with the predictions of dynamic circuit theory, which is used to explain more optimal coil arrays.

Mulcahy, T.H.; He, Jianliang; Rote, D.M. [Argonne National Lab., IL (United States); Rossing, T.D. [Northern Illinois Univ., De Kalb, IL (United States). Dept. of Physics

1993-03-01T23:59:59.000Z

437

Forces on a magnet moving past figure-eight coils  

SciTech Connect (OSTI)

For the first time, the lift, drag, and guidance forces acting on a permanent magnet are measured as the magnet passes over different arrays of figure-eight (null-flux) coils. The experimental results are in good agreement with the predictions of dynamic circuit theory, which is used to explain more optimal coil arrays.

Mulcahy, T.H.; He, Jianliang; Rote, D.M. (Argonne National Lab., IL (United States)); Rossing, T.D. (Northern Illinois Univ., De Kalb, IL (United States). Dept. of Physics)

1993-01-01T23:59:59.000Z

438

Report of the Task Force on Faculty Diversity and Inclusiveness  

E-Print Network [OSTI]

faculty search committees or to inform search committees themselves on best practices for increasing care demands affect tenure track faculty in unique ways; and many of our peer institutions a more diverse and inclusive institution. In response, the Task Force proposes 31 recommendations

Mahon, Bradford Z.

439

Force and Momentum in an Evolving Axisymmetric Universe Model  

E-Print Network [OSTI]

We take an axisymmetric rotating universe model by crossing with a time dependent factor and evaluate its force and momentum in this evolving universe. It is concluded that it behaves exactly like a Friedmann model. We also extend this conclusion to the most general cosmological model.

M. Sharif

2004-01-16T23:59:59.000Z

440

Force Behaviour in Radiation-Dominated Friedmann Universe  

E-Print Network [OSTI]

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

M. Sharif

2004-01-19T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Stray capacitances in the watt balance operation: electrostatic forces  

E-Print Network [OSTI]

In a watt balance, stray capacitances exist between the coil and the magnet. Since the electric current flowing in the coil originates a difference between the coil and magnet electric-potentials, their electrostatic interactions must be taken into account. This paper reports the results of a finite element analysis of the forces acting on the coil.

Quagliotti, Danilo

2014-01-01T23:59:59.000Z

442

Histomechanics of arteries due to altered mechanical forces  

E-Print Network [OSTI]

. Conversely, segments of artery that re-endothelialized re- tarrrcd tlreir abilitv to dnrease lhei?lian&ctcr to decreased flow. fvlalek aml Izuu&o [17] &le&n&&r&s&, &ai, ed the su&loth&&lial cell's ability to be, directly iuflueuccd by n&cchan- ical forces...

Bartsch, Heather Renee

2003-01-01T23:59:59.000Z

443

Friction and Adhesion Forces of Bacillus thuringiensis Spores on Planar Surfaces in Atmospheric Systems  

SciTech Connect (OSTI)

The kinetic friction force and the adhesion force of Bacillus thuringiensis spores on planar surfaces in atmospheric systems were studied using atomic force microscopy. The influence of relative humidity (RH) on these forces varied for different surface properties including hydrophobicity, roughness, and surface charge. The friction force of the spore was greater on a rougher surface than on mica, which is atomically flat. As RH increases, the friction force of the spores decreases on mica whereas it increases on rough surfaces. The influence of RH on the interaction forces between hydrophobic surfaces is not as strong as for hydrophilic surfaces. The friction force of the spore is linear to the sum of the adhesion force and normal load on the hydrophobic surface. The poorly defined surface structure of the spore and the adsorption of contaminants from the surrounding atmosphere are believed to cause a discrepancy between the calculated and measured adhesion forces.

Kweon, Hyojin [Georgia Institute of Technology; Yiacoumi, Sotira [Georgia Institute of Technology; Tsouris, Costas [ORNL

2011-01-01T23:59:59.000Z

444

Business Association Joint Task Force Position on Higher Education December 2010 Business Association Joint Task Force Position on Higher Education December 2010 1  

E-Print Network [OSTI]

Business Association Joint Task Force Position on Higher Education ­ December 2010 Business Association Joint Task Force Position on Higher Education ­ December 2010 1 Joint Business Association Task Force on Higher Education Summary The four business associations, Associated Oregon Industries, Oregon

Escher, Christine

445

Normal and lateral Casimir forces between deformed plates  

SciTech Connect (OSTI)

The Casimir force between macroscopic bodies depends strongly on their shape and orientation. To study this geometry dependence in the case of two deformed metal plates, we use a path-integral quantization of the electromagnetic field which properly treats the many-body nature of the interaction, going beyond the commonly used pairwise summation (PWS) of van der Waals forces. For arbitrary deformations we provide an analytical result for the deformation induced change in the Casimir energy, which is exact to second order in the deformation amplitude. For the specific case of sinusoidally corrugated plates, we calculate both the normal and the lateral Casimir forces. The deformation induced change in the Casimir interaction of a flat and a corrugated plate shows an interesting crossover as a function of the ratio of the mean plate distance H to the corrugation length {lambda}: For {lambda}<>H. The amplitude of the lateral force between two corrugated plates which are out of registry is shown to have a maximum at an optimal wavelength of {lambda}{approx_equal}2.5 H. With increasing H/{lambda} > or approx. 0.3 the PWS approach becomes a progressively worse description of the lateral force due to many-body effects. These results may be of relevance for the design and operation of novel microelectromechanical systems (MEMS) and other nanoscale devices.

Emig, Thorsten; Hanke, Andreas; Golestanian, Ramin; Kardar, Mehran [Institut fuer Theoretische Physik, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Cologne (Germany); Institut fuer Theoretische Physik, Universitaet Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart (Germany); Institute for Advanced Studies in Basic Sciences, Zanjan 45195-159 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of); Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2003-02-01T23:59:59.000Z

446

CORONAL MASS EJECTION MASS, ENERGY, AND FORCE ESTIMATES USING STEREO  

SciTech Connect (OSTI)

Understanding coronal mass ejection (CME) energetics and dynamics has been a long-standing problem, and although previous observational estimates have been made, such studies have been hindered by large uncertainties in CME mass. Here, the two vantage points of the Solar Terrestrial Relations Observatory (STEREO) COR1 and COR2 coronagraphs were used to accurately estimate the mass of the 2008 December 12 CME. Acceleration estimates derived from the position of the CME front in three dimensions were combined with the mass estimates to calculate the magnitude of the kinetic energy and driving force at different stages of the CME evolution. The CME asymptotically approaches a mass of 3.4 {+-} 1.0 Multiplication-Sign 10{sup 15} g beyond {approx}10 R{sub Sun }. The kinetic energy shows an initial rise toward 6.3 {+-} 3.7 Multiplication-Sign 10{sup 29} erg at {approx}3 R{sub Sun }, beyond which it rises steadily to 4.2 {+-} 2.5 Multiplication-Sign 10{sup 30} erg at {approx}18 R{sub Sun }. The dynamics are described by an early phase of strong acceleration, dominated by a force of peak magnitude of 3.4 {+-} 2.2 Multiplication-Sign 10{sup 14} N at {approx}3 R{sub Sun }, after which a force of 3.8 {+-} 5.4 Multiplication-Sign 10{sup 13} N takes effect between {approx}7 and 18 R{sub Sun }. These results are consistent with magnetic (Lorentz) forces acting at heliocentric distances of {approx}<7 R{sub Sun }, while solar wind drag forces dominate at larger distances ({approx}>7 R{sub Sun }).

Carley, Eoin P.; Gallagher, Peter T. [Astrophysics Research Group, School of Physics, Trinity College Dublin, Dublin 2 (Ireland); McAteer, R. T. James [Department of Astronomy, New Mexico State University, Las Cruces, NM 88003-8001 (United States)

2012-06-10T23:59:59.000Z

447

Force Control and Nonlinear Master-Slave Force Profile to Manage an Admittance Type Multi-Fingered Haptic User Interface  

SciTech Connect (OSTI)

Natural movements and force feedback are important elements in using teleoperated equipment if complex and speedy manipulation tasks are to be accomplished in remote and/or hazardous environments, such as hot cells, glove boxes, decommissioning, explosives disarmament, and space to name a few. In order to achieve this end the research presented in this paper has developed an admittance type exoskeleton like multi-fingered haptic hand user interface that secures the users palm and provides 3-dimensional force feedback to the users fingertips. Atypical to conventional haptic hand user interfaces that limit themselves to integrating the human hands characteristics just into the systems mechanical design this system also perpetuates that inspiration into the designed user interfaces controller. This is achieved by manifesting the property differences of manipulation and grasping activities as they pertain to the human hand into a nonlinear master-slave force relationship. The results presented in this paper show that the admittance-type system has sufficient bandwidth that it appears nearly transparent to the user when the user is in free motion and when the system is subjected to a manipulation task, increased performance is achieved using the nonlinear force relationship compared to the traditional linear scaling techniques implemented in the vast majority of systems.

Anthony L. Crawford

2012-08-01T23:59:59.000Z

448

Fast Model Based Approximation of the Closed-loop Performance Limits of Gas/Liquid Inline Separators for Accelerated Design  

E-Print Network [OSTI]

trend in the oil and gas (exploration & production) industry is to use compact ­centrifugal forces based the centrifugal forces necessary for separating the light from the heavy component. The resulting separation force) to keep the downstream pumps and compressors within a proper operating range (preventing e.g. cavitation

Van den Hof, Paul

449

DESIGN AND CONSTRUCTION OF A FORCE-REFLECTING TELEOPERATION SYSTEM  

SciTech Connect (OSTI)

For certain applications, such as space servicing, undersea operations, and hazardous material handling tasks in nuclear reactors, the environments can be uncertain, complex, and hazardous. Lives may be in danger if humans were to work under these conditions. As a result, a man-machine system--a teleoperator system--has been developed to work in these types of environments. In a typical teleoperator system, the actual system operates at a remote site; the operator located away from this system usually receives visual information from a video image and/or graphical animation on the computer screen. Additional feedback, such as aural and force information, can significantly enhance performance of the system. Force reflection is a type of feedback in which forces experienced by the remote manipulator are fed back to the manual controller. Various control methods have been proposed for implementation on a teleoperator system. In order to examine different control schemes, a one Degree-Of-Freedom (DOF) Force-Reflecting Manual Controller (FRMC) is constructed and integrated into a PC. The system parameters are identified and constructed as a mathematical model. The Proportional-Integral-Derivative (PID) and fuzzy logic controllers are developed and tested experimentally. Numerical simulation results obtained from the mathematical model are compared with those of experimental data for both types of controllers. In addition, the concept of a telesensation system is introduced. A telesensation system is an advanced teleoperator system that attempts to provide the operator with sensory feedback. In this context, a telesensation system integrates the use of a Virtual Reality (VR) unit, FRMC, and Graphical User Interface (GUI). The VR unit is used to provide the operator with a 3-D visual effect. Various commercial VR units are reviewed and features compared for use in a telesensation system. As for the FRMC, the conceptual design of a 3-DOF FRMC is developed in an effort to make the system portable, compact, and lightweight. A variety of design alternatives are presented and evaluated. Finally, a GUI software package is developed to interface with several teleoperation unit components. These components include an industrial robot, electric motor, encoder, force/torque sensor, and CCD camera. The software includes features such as position scaling, force scaling, and rereferencing and is intended to provide a sound basis for the development of a multi-DOF FRMC system in the future.

M.A. Ebadian, Ph.D.

1999-01-01T23:59:59.000Z

450

Efficient calculation of chiral three-nucleon forces up to N3LO for ab initio studies  

E-Print Network [OSTI]

We present a novel framework to decompose three-nucleon forces in a momentum space partial-wave basis. The new approach is computationally much more efficient than previous methods and opens the way to ab initio studies of few-nucleon scattering processes, nuclei and nuclear matter based on higher-order chiral 3N forces. We use the new framework to calculate matrix elements of chiral three-nucleon forces at N2LO and N3LO in large basis spaces and carry out benchmark calculations for neutron matter and symmetric nuclear matter. We also study the size of the individual three-nucleon force contributions for $^3$H. For nonlocal regulators, we find that the sub-leading terms, which have been neglected in most calculations so far, provide important contributions. All matrix elements are calculated and stored in a user-friendly way, such that values of low-energy constants as well as the form of regulator functions can be chosen freely.

K. Hebeler; H. Krebs; E. Epelbaum; J. Golak; R. Skibinski

2015-02-10T23:59:59.000Z

451

Efficient calculation of chiral three-nucleon forces up to N3LO for ab initio studies  

E-Print Network [OSTI]

We present a novel framework to decompose three-nucleon forces in a momentum space partial-wave basis. The new approach is computationally much more efficient than previous methods and opens the way to ab initio studies of few-nucleon scattering processes, nuclei and nuclear matter based on higher-order chiral 3N forces. We use the new framework to calculate matrix elements of chiral three-nucleon forces at N2LO and N3LO in large basis spaces and carry out benchmark calculations for neutron matter and symmetric nuclear matter. We also study the size of the individual three-nucleon force contributions for $^3$H. For nonlocal regulators, we find that the sub-leading terms, which have been neglected in most calculations so far, provide important contributions. All matrix elements are calculated and stored in a user-friendly way, such that values of low-energy constants as well as the form of regulator functions can be chosen freely.

Hebeler, K; Epelbaum, E; Golak, J; Skibinski, R

2015-01-01T23:59:59.000Z

452

Mitigated-force carriage for high magnetic field environments  

SciTech Connect (OSTI)

A carriage for high magnetic field environments includes a first work-piece holding means for holding a first work-piece, the first work-piece holding means being disposed in an operable relationship with a work-piece processing magnet having a magnetic field strength of at least 1 Tesla. The first work-piece holding means is further disposed in operable connection with a second work-piece holding means for holding a second work-piece so that, as the first work-piece is inserted into the magnetic field, the second work-piece is simultaneously withdrawn from the magnetic field, so that an attractive magnetic force imparted on the first work-piece offsets a resistive magnetic force imparted on the second work-piece.

Ludtka, Gerard M; Ludtka, Gail M; Wilgen, John B; Murphy, Bart L

2014-05-20T23:59:59.000Z

453

Dilution and resonance-enhanced repulsion in nonequilibrium fluctuation forces  

SciTech Connect (OSTI)

In equilibrium, forces induced by fluctuations of the electromagnetic field between electrically polarizable objects (microscopic or macroscopic) in vacuum are generically attractive. The force may, however, become repulsive for microscopic particles coupled to thermal baths with different temperatures. We demonstrate that this nonequilibrium repulsion can be realized also between macroscopic objects, as planar slabs, if they are kept at different temperatures. It is shown that repulsion can be enhanced by (i) tuning of material resonances in the thermal region and by (ii) reducing the dielectric contrast due to ''dilution''. This can lead to stable equilibrium positions. We discuss the realization of these effects for aerogels, yielding repulsion down to submicron distances at realistic porosities.

Bimonte, Giuseppe [Dipartimento di Scienze Fisiche, Universita di Napoli Federico II, Complesso Universitario MSA, Via Cintia, I-80126 Napoli (Italy); INFN Sezione di Napoli, I-80126 Napoli (Italy); Emig, Thorsten [Laboratoire de Physique Theorique et Modeles Statistiques, CNRS UMR 8626, Bat. 100, Universite Paris-Sud, F-91405 Orsay cedex (France); Krueger, Matthias; Kardar, Mehran [Massachusetts Institute of Technology, Department of Physics, Cambridge, Massachusetts 02139 (United States)

2011-10-15T23:59:59.000Z

454

Nonlethal weapons as force options for the Army  

SciTech Connect (OSTI)

This paper suggests that future challenges to US national security will be very different from those previously experienced. In a number of foreseeable circumstances, conventional military force will be inappropriate. The National Command Authority, and other appropriate levels of command, need expanded options available to meet threats for which the application of massive lethal force is counterproductive or inadvisable. It is proposed that nonlethal concepts be developed that provide additional options for military leaders and politicians. Included in this initiative should be exploration of policy, strategy, doctrine, and training issues as well as the development of selected technologies and weapons. In addition, civilian law enforcement agencies have similar requirements for less-than-lethal systems. This may be an excellent example for a joint technology development venture.

Alexander, J.B.

1994-04-01T23:59:59.000Z

455

Spin-Flavor van der Waals Forces and NN interaction  

SciTech Connect (OSTI)

A major goal in Nuclear Physics is the derivation of the Nucleon-Nucleon (NN) interaction from Quantum Chromodynamics (QCD). In QCD the fundamental degrees of freedom are colored quarks and gluons which are confined to form colorless strongly interacting hadrons. Because of this the resulting nuclear forces at sufficiently large distances correspond to spin-flavor excitations, very much like the dipole excitations generating the van der Waals (vdW) forces acting between atoms. We study the Nucleon-Nucleon interaction in the Born-Oppenheimer approximation at second order in perturbation theory including the Delta resonance as an intermediate state. The potential resembles strongly chiral potentials computed either via soliton models or chiral perturbation theory and has a van der Waals like singularity at short distances which is handled by means of renormalization techniques. Results for the deuteron are discussed.

Alvaro Calle Cordon, Enrique Ruiz Arriola

2011-12-01T23:59:59.000Z

456

Feedback control of inertial microfluidics using axial control forces  

E-Print Network [OSTI]

Inertial microfluidics is a promising tool for many lab-on-a-chip applications. Particles in channel flows with Reynolds numbers above one undergo cross-streamline migration to a discrete set of equilibrium positions in square and rectangular channel cross sections. This effect has been used extensively for particle sorting and the analysis of particle properties. Using the lattice Boltzmann method, we determine equilibrium positions in square and rectangular cross sections and classify their types of stability for different Reynolds numbers, particle sizes, and channel aspect ratios. Our findings thereby help to design microfluidic channels for particle sorting. Furthermore, we demonstrate how an axial control force, which slows down the particles, shifts the stable equilibrium position towards the channel center. Ultimately, the particles then stay on the centerline for forces exceeding a threshold value. This effect is sensitive to particle size and channel Reynolds number and therefore suggests an efficie...

Prohm, Christopher

2014-01-01T23:59:59.000Z

457

Four-nucleon force in chiral effective field theory  

SciTech Connect (OSTI)

We derive the leading contribution to the four--nucleon force within the framework of chiral effective field theory. It is governed by the exchange of pions and the lowest--order nucleon--nucleon contact interaction and includes effects due to the nonlinear pion--nucleon couplings and the pion self interactions constrained by the chiral symmetry of QCD. The resulting 4NF does not contain any unknown parameters and can be tested in future few--and many--nucleon studies.

Evgeny Epelbaum

2005-10-25T23:59:59.000Z

458

Nuclear matter equation of state and three-body forces  

SciTech Connect (OSTI)

The energy per particle, symmetry energy, pressure, and free energy are calculated for symmetric nuclear matter using BHF approach with modern nucleon-nucleon CD-Bonn, Nijm1, Argonne v{sub 18}, and Reid 93 potentials. To obtain saturation in nuclear matter we add three-body interaction terms which are equivalent to a density-dependent two-nucleon interaction a la Skyrme force. Good agreement is obtained in comparison with previous theoretical estimates and experimental data.

Mansour, H. M. M.; Algamoudi, A. M. A. [Cairo University, Physics Department, Faculty of Science (Egypt)

2012-04-15T23:59:59.000Z

459

Final Report of the Simulation Optimization Task Force  

SciTech Connect (OSTI)

This is the final report of the ATLAS Simulation Optimization Task Force, establishedin June of 2007. This note justifies the selected Geant4 version, physics list, and range cuts to be used by the default ATLAS simulation for initial data taking and beyond. The current status of several projects, including detector description, simulation validation, studies of additional Geant4 parameters, and cavern background, are reported.

ATLAS Collaboration; Rimoldi, A.; Carli, T.; Dell'Acqua, A.; Froidevaux, D.; Gianotti, F.; Guyot, C.; Hinchliffe, I.; Jakobs, K.; Marshall, Z.; Nisati, A.; Quarrie, D.; Unal, G.; Young, C.

2008-12-15T23:59:59.000Z

460

Hamilton Operators, Discrete Symmetries, Brute Force and SymbolicC++  

E-Print Network [OSTI]

To find the discrete symmetries of a Hamilton operator $\\hat H$ is of central importance in quantum theory. Here we describe and implement a brute force method to determine the discrete symmetries given by permutation matrices for Hamilton operators acting in a finite-dimensional Hilbert space. Spin and Fermi systems are considered as examples. A computer algebra implementation in SymbolicC++ is provided.

Willi-Hans Steeb; Yorick Hardy

2012-08-23T23:59:59.000Z

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Feeling molecular forces: tactile feedback to enhance drug design  

E-Print Network [OSTI]

Programs 8 Academic Scholarships Texas A8 M University In partial fulfillment of the requirements of the UNIVERSITY UNDERGRADUATE RESEARCH FELLOWS Approved as to style and content by: Edgar F. Meyer' (Fellows-Co-Advisor) Edward A. Funkhouser... (Executive Director) Stanley . Swanson (Fellows o-Advisor) April 2000 Group: Computer Science ABSTRACT FEELING MOLECULAR FORCES: TACTII E FEEDBACK TO ENHANCE DRUG DESIGN. (April 2000) Jocylin Amber Williams Department of Biochemistry and Biophysics...

Williams, Jocylin Amber

2013-02-22T23:59:59.000Z

462

Connecting local active forces to macroscopic stress in elastic media  

E-Print Network [OSTI]

In contrast with ordinary materials, living matter drives its own motion by generating active, out-of-equilibrium internal stresses. These stresses typically originate from localized active elements embedded in an elastic medium, such as molecular motors inside the cell or contractile cells in a tissue. While many large-scale phenomenological theories of such active media have been developed, a systematic understanding of the emergence of stress from the local force-generating elements is lacking. In this paper, we present a rigorous theoretical framework to study this relationship. We show that the medium's macroscopic active stress tensor is equal to the active elements' force dipole tensor per unit volume in both continuum and discrete linear homogeneous media of arbitrary geometries. This relationship is conserved on average in the presence of disorder, but can be violated in nonlinear elastic media. Such effects can lead to either a reinforcement or an attenuation of the active stresses, giving us a glimpse of the ways in which nature might harness microscopic forces to create active materials.

Pierre Ronceray; Martin Lenz

2014-11-12T23:59:59.000Z

463

A systems-based approach to the design, management and integration of enterprise-level change in defense shipbuilding  

E-Print Network [OSTI]

Continually declining Navy surface combatant acquisitions, the war on terror, shifting Congressional priorities and a consolidated shipbuilding industrial base are forcing fundamental changes in the defense shipbuilding ...

Bond, Andrew S., 1975-

2005-01-01T23:59:59.000Z

464

Dynamical CasimirPolder force on a partially dressed atom in a cavity comprising a dielectric  

SciTech Connect (OSTI)

We put a two-level atom into a cavity comprising a dielectric with output coupling. An analytical expression of the dynamical CasimirPolder force in such a system is obtained when the system starts from a partially dressed state. And the effects of several relevant parameters of the system on the time-dependent force are also discussed. -- Highlights: We get the dynamical CP force on a partially dressed atom in a dielectric cavity. The force in this cavity is larger than that in infinite dielectric space. The force is not symmetric with respect to the center of the cavity. The oscillating time of the force increases with the cavity size.

Yang, H.; Zheng, T.Y., E-mail: zhengty@nenu.edu.cn; Zhang, X.; Shao, X.Q.; Pan, S.M., E-mail: pansm717@nenu.edu.cn

2014-05-15T23:59:59.000Z

465

Climatological study of radar echo pictures from Albrook Air Force Base, Panama  

E-Print Network [OSTI]

of the radar beam above the surface of the earth for a two degree antenna tilt (From AWS, 1955). . 9 Echo occurrence chart of radar data observed at Albrook AFB, Panama, for the month of January, 1962 Echo occurrence chart of radar date observed... at Albrook AFB, Panama, for the month of April, 1961 Echo occurrence chart of radar data observed at Albrook AFB, Panama, for the month of July, 1961 16 17 18 Topography and radar echo occurrence profiles for a circle of 75-statute-mile radius from...

Bowen, Christopher

2012-06-07T23:59:59.000Z

466

Wright-Patterson Air Force Base, and even the coroner's office in Dayton, Ohio.  

E-Print Network [OSTI]

mission that results in an ocean splashdown. "They will see us go through all of our planning content, extreme radiation, and even the psychological impact of isolation, loss of family contact

Alvarez, Francisco J.

467

Optimization-based allocation of force protection resources in an asymmetric environment  

E-Print Network [OSTI]

More than four years after the end of major combat operations in the 2003 Iraq War, the United States military continues to sustain casualties at rates higher than those during the ground campaign. Combat service support ...

DeGregory, Keith W. (Keith William)

2007-01-01T23:59:59.000Z

468

air-force base welcomes: Topics by E-print Network  

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

5, 2014 12;Corporate Affiliates Chairman: Mark Ambrose San Diego Site Executive, Raytheon 12;Corporate Affiliates Program Welcome New CAP Members 12;Corporate Affiliates...

469

Atomic Force Microscope Based Near-field Imaging for Probing Cell Surface Interactions  

E-Print Network [OSTI]

Bovine Serum FDTD Finite Difference Time Domain FEM Finite Element Method FRET F?rster Resonance Energy Transfer FWHM Full Width at Half Maximum L-M Lorenz-Mie MEM Minimum Essential Medium QD Quantum Dot RFP Red Fluorescent Protein TE Transverse... .................... 63 4.4 Modeling of WGMs in microspheres with inhomogeneous surrounding ......... 66 4.4.1 ADDA ................................................................................................... 66 4.4.2 L-M model...

Amini, Sina

2013-03-26T23:59:59.000Z

470

Energy efficiency assessment methods and tools evaluation. Bolling Air Force Base. Revision 1  

SciTech Connect (OSTI)

The goal of the U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) is to facilitate energy-efficiency improvements at federal facilities. This is accomplished by a balanced program of technology development, facility assessment, and use of cost-sharing procurement mechanisms. Technology development focuses upon the tools, software, and procedures used to identify and evaluate energy-efficiency technologies and improvements. For facility assessment, FEMP provides metering equipment and trained analysts to federal agencies exhibiting a commitment to improve energy use efficiency. To assist in procurement of energy-efficiency measures, FEMP helps federal agencies devise and implement performance contracting and utility demand-side management strategies. Pacific Northwest Laboratory (PNL) supports the FEMP mission of energy systems modernization. Under this charter, the Laboratory and its contractors work with federal facility energy managers to assess and implement energy-efficiency improvements at federal facilities nationwide.

McMordie, K.L.; Richman, E.E.; Keller, J.M.; Dixon, D.R.

1995-05-01T23:59:59.000Z

471

A Force-Based Blending Model for Atomistic-to-Continuum Coupling  

E-Print Network [OSTI]

, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04 balance at points in the bridge region. Simple patch tests and computational experiments are used to study Institute, Troy NY 12180 ({fishj,nuggehal}@ scorec.rpi.edu). Supported in part by the Department of Energy

Bochev, Pavel

472

Robins Air Force Base integrated resource assessment. Volume 1: Executive summary  

SciTech Connect (OSTI)

Some of the most difficult problems that a federal site has in reducing its energy consumption in a cost-effective manner revolve around understanding where the energy is being used, and what technologies could be employed to decrease the energy use. Many large federal sites have one or two meters to track electric energy use for several thousand buildings and numerous industrial processes. Even where meters are available on individual buildings or family housing units, the meters are not consistently read. When the federal energy manager has been able to identify high energy users, he or she may not have the background, training, or resources to determine the most cost-effective options for reducing this energy use. This can lead to selection of suboptimal projects that prevent the site from achieving the full life-cycle cost savings. The U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP), supported by the Pacific Northwest Laboratory (PNL), has developed a model program that provides a systematic approach to evaluating energy opportunities that (1) identifies the building groups and end uses that use the most energy (not just have the greatest energy-use intensity), and (2) evaluates the numerous options for retrofit or installation of new technology that will result in the selection of the most cost-effective technologies. In essence, this model program provides the federal energy manager with a roadmap to significantly reduce energy use in a planned, rational, cost-effective fashion that is not biased by the constraints of the typical funding sources available to federal sites. The results from this assessment process can easily be turned into a five- to ten-year energy management plan that identifies where to start and how to proceed in order to reach the mandated energy consumption targets.

Larson, L.L.; Keller, J.M.

1994-03-01T23:59:59.000Z

473

Passivity-Based Impact and Force Control of a Pneumatic Actuator  

E-Print Network [OSTI]

and coexistence of robots and humans not only on the shop floor, but also for applications at home the behavior of a simple impedance, then the stability of the system is preserved when it is coupled to the environment and/or a human operator. A system is said to be passive if the energy absorbed over any period

Barth, Eric J.

474

Performance-based design of reinforced concrete buildings subjected to seismic forces  

E-Print Network [OSTI]

considered event (2% probability of exceedance in 50 years) according to FEMA-273 (ATC 1997a) were used. The probabilistic nature of earthquakes was simulated by using 25 different records of measured time histories, from previous seismic events and scaled...

Kalghatgi, Nikhil S.

1998-01-01T23:59:59.000Z

475

Dynamic Precision Measurement of the Casimir Force using Short Coherence Length Fiber-Based Interferometer  

E-Print Network [OSTI]

photo- resist reflow, photolithography) to make our low noise spherical sensor.photo-detector). Fiber-optic interferometer Many cantilever deflection sensorsspherical sensor fabrication. SOI (e) (a) ICP (i) Photo-

Chang, Chia-Cheng

2010-01-01T23:59:59.000Z

476

An Event-Controlled Online Trajectory Generator Based on the Human-Robot Interaction Force Processing  

E-Print Network [OSTI]

TLIBA, c July 2013 Type : Preprint to "Industrial Robot: an International Journal" 1/16 hal-00861854,version1-13Sep2013 Author manuscript, published in "Industrial Robot: An International Journal 41, 1 (2013 industrial applications to human centered ones. The ultimate goal is to reduce fatigue, improve the motions

Paris-Sud XI, Université de

477

E-Print Network 3.0 - afm-based force spectroscopy Sample Search...  

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

3 4 5 > >> Page: << < 1 2 3 4 5 > >> 61 Investigation of nanolocal fluorescence resonance energy transfer for scanning probe microscopy Summary: confirmed in another series of...

478

Spring 1995 wildlife and vegetation survey, Norton Air Force Base, California  

SciTech Connect (OSTI)

The objectives of the 1994 and 1995 wildlife and vegetation surveys were to gather data to be used for various applications including: (1) basewide Environmental Risk Assessment (ERA) Work Plan (Scoping Document), (2) the completion of the basewide ERA, (3) determining remedial activities, and (4) determining the distribution of state and federal list plant and animal species on Norton AFB. Data gathering included an inventory of plant and animal species present, the identification of potential ecological receptors, mapping of habitats, and constructing the ecological food web present on or near the IRP sites of concern.

NONE

1995-07-18T23:59:59.000Z

479

Numerical simulation of hourly temperatures at Webb Air Force Base, Texas  

E-Print Network [OSTI]

, with time of year, of the autocorrelation coefficient, and a first-order kharkov chain. Fourier (harmonic) analysis was used extensively in the development of the model and the reverse adjusted normal transformation was used to transform a normal... for by the 1st, 365th, 730th, and 1095th barmonics, 17 Vai~ es of the parameters used to generate the mean hourly temperature. Percent of the variance of the standard devia- tion of hourly temperature, accounted for by the 1st and 36th harmonics. 24...

Hansen, James Edward

1975-01-01T23:59:59.000Z

480

Dyess Air Force Base Water Conservation and Green Energy | Department of  

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

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 Delicious Rank EERE:Year in Review: TopEnergy DOEDealingVehicle1 Closing the Circle:Durability Working

Note: This page contains sample records for the topic "force base kafb" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals  

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

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 Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth Codestheatfor Optimized SCRUnderbodyofBringing you a

482

NNSA to save $7 million on electricity at Sandia, Kirtland Air Force Base  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory | National Nuclearover two years | National Nuclear Security

483

DOE - Office of Legacy Management -- Nellis Air Force Base - NV 04  

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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou are herePA 3003A AECMexico -36Nellis Air

484

A Glycam-Based Force Field for Simulations of Lipopolysaccharide Membranes:  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011A First Look at Yeast Fatty AcidParametrization and

485

F.E. Warren Air Force Base Wind Farm | 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 Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 NoSan Leandro,Law andEnergyEvogyMore SteamEyeOn Solar

486

CASL - CFD-Based Turbulence Force Evaluation for Grid-to-Rod Fretting  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone6Energy, science, andAnalysis of Two-Dimensional Lattice

487

Mechanistic study of dielectric chemical mechanical polishing by spectral and scaling analysis of atomic force microscope images  

SciTech Connect (OSTI)

Thermal oxide and PETEOS oxide surfaces, polished on an IPEC 472 with different combinations of polish pad, slurry, and polishing conditions, were studied with ex situ atomic force microscopy. The post polish surfaces were analyzed qualitatively by visual inspection and quantitatively by spectral and scaling analyses. Spectral and scaling analyses gave consistent interpretations of morphology evolution. Polishing with either a fixed abrasive pad or alumina-based slurry occurred via a mechanism for which asperities are removed and recesses are filled. A sputtering-type mechanism may contribute to material removal when polishing with silica- or ceria-based slurries.

Verhoff, M.L.

1999-12-22T23:59:59.000Z

488

Nuclear quantum effects in liquid water from path-integral simulations using an ab initio force matching approach  

E-Print Network [OSTI]

We have applied path integral simulations, in combination with new ab initio based water potentials, to investigate nuclear quantum effects in liquid water. Because direct ab initio path integral simulations are computationally expensive, a flexible water model is parameterized by force-matching to density functional theory-based molecular dynamics simulations. The resulting effective potentials provide an inexpensive replacement for direct ab inito molecular dynamics simulations and allow efficient simulation of nuclear quantum effects. Static and dynamic properties of liquid water at ambient conditions are presented and the role of nuclear quantum effects, exchange-correlation functionals and dispersion corrections are discussed in regards to reproducing the experimental properties of liquid water.

Thomas Spura; Christopher John; Scott Habershon; Thomas D. Khne

2014-02-06T23:59:59.000Z

489

A refined empirical stability criterion for nonlinear Schroedinger solitons under spatiotemporal forcing  

E-Print Network [OSTI]

We investigate the dynamics of travelling oscillating solitons of the cubic NLS equation under an external spatiotemporal forcing of the form $f(x,t) = a \\exp[iK(t)x]$. For the case of time-independent forcing a stability criterion for these solitons, which is based on a collective coordinate theory, was recently conjectured. We show that the proposed criterion has a limited applicability and present a refined criterion which is generally applicable, as confirmed by direct simulations. This includes more general situations where $K(t)$ is harmonic or biharmonic, with or without a damping term in the NLS equation. The refined criterion states that the soliton will be unstable if the "stability curve" $p(\\v)$, where $p(t)$ and $\\v(t)$ are the normalized momentum and the velocity of the soliton, has a section with a negative slope. Moreover, for the case of constant $K$ and zero damping we use the collective coordinate solutions to compute a "phase portrait" of the soliton where its dynamics is represented by two-dimensional projections of its trajectories in the four-dimensional space of collective coordinates. We conjecture, and confirm by simulations, that the soliton is unstable if a section of the resulting closed curve on the portrait has a negative sense of rotation.

Franz G. Mertens; Niurka R. Quintero; I. V. Barashenkov; A. R. Bishop

2011-06-28T23:59:59.000Z

490

Detection of secondary phases in duplex stainless steel by magnetic force microscopy and scanning Kelvin probe force microscopy  

SciTech Connect (OSTI)

The secondary phase transformations in a commercial super duplex stainless steel were investigated by micro-chemical analyses and high resolution scanning probe microscopy. Energy dispersive X-ray and electron probe detected ferrite and austenite as well as secondary phases in unetched aged duplex stainless steel type 25Cr-7Ni-3Mo. Volta potential indicated that nitride and sigma appeared more active than ferrite, while secondary austenite and austenite presented a nobler potential. Reversal order in nobility is thought to be attributable to the potential ranking provided by oxide nature diversity as a result of secondary phase surface compositions on steel. After eutectoid transformation, secondary austenite was detected by electron probe microanalysis, whereas atomic force microscopy distinguished this phase from former austenite by image contrast. Magnetic force microscopy revealed a ghosted effect on the latter microstructure probably derived from metal memory reminiscence of mechanical polishing at passivity and long range magnetic forces of ferrite phase. - Highlights: Nobility detection of secondary phases by SKPFM in DSS particles is not a straightforward procedure. As Volta potential and contrast are not always consistent SKPFM surface oxides is thought played an important role in detection. AFM distinguished secondary austenite from former austenite by image contrast though SEM required EPMA.

Ramrez-Salgado, J. [Instituto Mexicano del Petrleo, Direccin de Investigacin y Posgrado, Eje Central Norte Lzaro Crdenas, No. 152, 07730 D.F., Mxico (Mexico); Domnguez-Aguilar, M.A., E-mail: madoming@imp.mx [Instituto Mexicano del Petrleo, Direccin de Investigacin y Posgrado, Eje Central Norte Lzaro Crdenas, No. 152, 07730 D.F., Mxico (Mexico); Castro-Domnguez, B. [University of Tokyo, Department of Chemical System Engineering, Faculty of Engineering Bldg. 5, 7F 722, 7-3-1 Hongo, Bunkyo-ku, Tokyo 1138656 (Japan); Hernndez-Hernndez, P. [Instituto Mexicano del Petrleo, Direccin de Investigacin y Posgrado, Eje Central Norte Lzaro Crdenas, No. 152, 07730 D.F., Mxico (Mexico); Newman, R.C. [University of Toronto, Department of Chemical Engineering and Applied Chemistry, 200 College Street, Toronto M5S 3E5 (Canada)

2013-12-15T23:59:59.000Z

491

Not in your backyard : transitive compellence, base states, and violent non-state groups  

E-Print Network [OSTI]

Violent non-state actors have consistently served as a destabilizing force within the international system. These groups create a base within a state's sovereign territory, the "base state," and utilize this platform to ...

Fraiman, Keren Eva (Fraiman Stieber)

2014-01-01T23:59:59.000Z

492

Solar Community Comes Out in Full Force for SunShot Grand Challenge...  

Office of Environmental Management (EM)

Solar Community Comes Out in Full Force for SunShot Grand Challenge Summit Solar Community Comes Out in Full Force for SunShot Grand Challenge Summit May 22, 2014 - 9:58am Addthis...

493

Identification of force coefficients in flexible rotor-bearing systems - enhancements and further validations  

E-Print Network [OSTI]

identification of bearing force parameters, i.e. stiffness and damping coefficients, is one of the most difficult to achieve. Field identification by imbalance response measurements is a simple and often reliable way to determine synchronous speed force...

Balantrapu, Achuta Kishore Rama Krishna

2005-11-01T23:59:59.000Z

494

Literature Review of Fire Ecology and Effects United States Air Force Academy  

E-Print Network [OSTI]

Literature Review of Fire Ecology and Effects United States Air Force Academy Colorado Springs, Colorado 1997 Report submitted to: U.S. Air Force Academy, Natural Resources Compiled by: Denise Culver

495

Annular mode-like responses to external forcings in a simple atmospheric general circulation model  

E-Print Network [OSTI]

In this thesis, I investigate the response of a simple atmospheric general circulation model to applied forcings to learn whether the annular mode patterns are a preferred model response to the forcings. The thesis is ...

Ring, Michael J., 1979-

2008-01-01T23:59:59.000Z

496

Force Tracking With Feed-Forward Motion Estimation for Beating Heart Surgery  

E-Print Network [OSTI]

The manipulation of fast-moving, delicate tissues in beating heart procedures presents a considerable challenge to the surgeon. A robotic force tracking system can assist the surgeon by applying precise contact forces to ...

Yuen, Shelten G.

497

The Casimir force on a piston at finite temperature in Randall-Sundrum models  

E-Print Network [OSTI]

The Casimir effect for a three-parallel-plate system at finite temperature within the frame of five-dimensional Randall-Sundrum models is studied. In the case of Randall-Sundrum model involving two branes we find that the Casimir force depends on the plates distance and temperature after one outer plate has been moved to the distant place. Further we discover that the sign of the reduced force is negative as the plate and piston locate very close, but the reduced force nature becomes repulsive when the plates distance is not very tiny and finally the repulsive force vanishes with extremely large plates separation. The thermal influence causes the repulsive Casimir force greater. Within the frame of one-brane scenario the reduced Casimir force between the piston and one plate left keeps attractive no matter how high the temperature is. It is interesting that the thermal effect leads the attractive Casimir force greater instead of changing the force nature.

Hongbo Cheng

2011-12-29T23:59:59.000Z

498

E-Print Network 3.0 - armed forced chief Sample Search Results  

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

to fight... to civilian militias and Village Defence Committees by security forces in Nepal during the time of the armed... by the UCPN (Maoist) on one hand and security forces...

499

E-Print Network 3.0 - armed forces institute Sample Search Results  

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

to fight... to civilian militias and Village Defence Committees by security forces in Nepal during the time of the armed... by the UCPN (Maoist) on one hand and security forces...

500

Design, development, and dynamic characterization of multi-axis force sensing composite footpad  

E-Print Network [OSTI]

Accurate ground reaction force measurements are important for the development, implementation, and control of high speed legged locomotion robots. From previous research studies, a composite force sensing footpad has been ...

Zhang, Guangtao, S.B. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z