Powered by Deep Web Technologies
Note: This page contains sample records for the topic "moisture snowflake shapes" 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.


1

Snowflake Science | Department of Energy  

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

Snowflake Science Snowflake Science January 12, 2012 - 2:08pm Addthis Snowflakes always have six sides, their form and shape depend on temperature and moisture -- and they may have...

2

A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh...  

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

A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion Plasmas Recent experiments have confirmed the great potential of a novel plasma-material interface concept....

3

A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion  

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

A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion Plasmas Fusion Energy Sciences (FES) FES Home About Research Facilities Science Highlights Benefits of FES Funding Opportunities Fusion Energy Sciences Advisory Committee (FESAC) News & Resources Contact Information Fusion Energy Sciences U.S. Department of Energy SC-24/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-4941 F: (301) 903-8584 E: sc.fes@science.doe.gov More Information » October 2012 A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion Plasmas Recent experiments have confirmed the great potential of a novel plasma-material interface concept. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

4

A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion  

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

A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion A Snowflake-Shaped Magnetic Field Holds Promise for Taming Harsh Fusion Plasmas Recent experiments have confirmed the great potential of a novel plasma-material interface concept. By U.S Department of Energy Office of Science October 31, 2012 Tweet Widget Facebook Like Google Plus One National Spherical Torus Experiment (Photo by Elle Starkman, Office of Communications, PPPL) National Spherical Torus Experiment The Science Heat escaping from the core of a twelve-million degree nuclear fusion plasma device was successfully contained by a snowflake-shaped magnetic field to mitigate its impact on device walls. The Impact One of the grand challenges of the magnetic fusion research is to "tame the plasma-material interface"-to develop an interface between the hot

5

Snowflake Divertor Configuration in NSTX  

SciTech Connect (OSTI)

Steady-state handling of divertor heat flux is a critical issue for present and future conventional and spherical tokamaks with compact high power density divertors. A novel 'snowflake' divertor (SFD) configuration that takes advantage of magnetic properties of a second-order poloidal null has been predicted to have a larger plasma-wetted area and a larger divertor volume, in comparison with a standard first-order poloidal X-point divertor configuration. The SFD was obtained in 0.8 MA, 4-6 MW NBI-heated H-mode discharges in NSTX using two divertor magnetic coils. The SFD led to a partial detachment of the outer strike point even in low-collisionality scrape-off layer plasma obtained with lithium coatings in NSTX. Significant divertor peak heat flux reduction and impurity screening have been achieved simultaneously with good core confinement and MHD properties.

Soukhanovskii, V. A. [Lawrence Livermore National Laboratory (LLNL); Ahn, Joonwook [ORNL; Bell, R. E. [Princeton Plasma Physics Laboratory (PPPL); Gates, D.A. [Princeton Plasma Physics Laboratory (PPPL); Gerhardt, S. [Princeton Plasma Physics Laboratory (PPPL); Kaita, R. [Princeton Plasma Physics Laboratory (PPPL); Kolemen, E.. [Princeton Plasma Physics Laboratory (PPPL); Kugel, H. W. [Princeton Plasma Physics Laboratory (PPPL); LeBlanc, B [Princeton Plasma Physics Laboratory (PPPL); Maingi, Rajesh [ORNL; Maqueda, R. J. [Nova Photonics, Princeton, NJ; McLean, Adam G [ORNL; Menard, J. E. [Princeton Plasma Physics Laboratory (PPPL); Mueller, D. [Princeton Plasma Physics Laboratory (PPPL); Paul, S. F. [Princeton Plasma Physics Laboratory (PPPL); Raman, R [University of Washington, Seattle; Roquemore, L. [Princeton Plasma Physics Laboratory (PPPL); Ryutov, D. D. [Lawrence Livermore National Laboratory (LLNL); Scott, H A [Lawrence Livermore National Laboratory (LLNL)

2011-01-01T23:59:59.000Z

6

Snowflake White Mountain Power Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

Snowflake White Mountain Power Biomass Facility Snowflake White Mountain Power Biomass Facility Jump to: navigation, search Name Snowflake White Mountain Power Biomass Facility Facility Snowflake White Mountain Power Sector Biomass Owner Renegy Location Snowflake, Arizona Coordinates 34.5133698°, -110.0784491° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.5133698,"lon":-110.0784491,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

7

Empirical Relationships for Estimating Liquid Water Fraction of Melting Snowflakes  

Science Journals Connector (OSTI)

The liquid water fraction of individual snowflakes f is an important parameter when calculating the radar reflectivity of a melting layer. A ground-based observation of f at Nagaoka, Japan, was conducted by using dye-treated filter papers that ...

Ryohei Misumi; Hiroki Motoyoshi; Satoru Yamaguchi; Sento Nakai; Masaaki Ishizaka; Yasushi Fujiyoshi

2014-10-01T23:59:59.000Z

8

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

snowflake Topic snowflake Topic Snowflake Science by Kate Bannan 13 Dec, 2011 in Science Communications snowflake With winter just around the corner, can snow be far behind? We've all heard that no two snowflakes are alike, but what do we really know about them? Snowflakes always have six sides. Their form and shape depends on temperature and moisture. Snowflake shapes fall into six main categories: plate (flat), column, stars, dendrite (lacy), needle and capped column. When it is extremely cold, snow becomes fine and powdery and the snowflakes' design becomes simpler, usually needle or rod shaped. When the temperature is close to freezing point, snowflakes become much larger and more complex in design. Related Topics: Princeton Plasma Physics Laboratory, Science Accelerator, snowflake, tokamak

9

Moisture Matters | EMSL  

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

Moisture Matters Moisture Matters Cryogenic microscopy methods yield insights to microbial morphology State-of-the-art cryogenic electron microscopy (EM) approaches at EMSL are...

10

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Snowflake Science Snowflake Science by Kate Bannan on Tue, 13 Dec, 2011 snowflake With winter just around the corner, can snow be far behind? We've all heard that no two snowflakes are alike, but what do we really know about them? Snowflakes always have six sides. Their form and shape depends on temperature and moisture. Snowflake shapes fall into six main categories: plate (flat), column, stars, dendrite (lacy), needle and capped column. When it is extremely cold, snow becomes fine and powdery and the snowflakes' design becomes simpler, usually needle or rod shaped. When the temperature is close to freezing point, snowflakes become much larger and more complex in design. Snow crystals form in clouds when the temperature is below freezing and are created by water droplets freezing on small ice particles. As an ice

11

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

tokamak Topic tokamak Topic Snowflake Science by Kate Bannan 13 Dec, 2011 in Science Communications snowflake With winter just around the corner, can snow be far behind? We've all heard that no two snowflakes are alike, but what do we really know about them? Snowflakes always have six sides. Their form and shape depends on temperature and moisture. Snowflake shapes fall into six main categories: plate (flat), column, stars, dendrite (lacy), needle and capped column. When it is extremely cold, snow becomes fine and powdery and the snowflakes' design becomes simpler, usually needle or rod shaped. When the temperature is close to freezing point, snowflakes become much larger and more complex in design. Related Topics: Princeton Plasma Physics Laboratory, Science Accelerator, snowflake, tokamak

12

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Princeton Plasma Physics Laboratory Topic Princeton Plasma Physics Laboratory Topic Snowflake Science by Kate Bannan 13 Dec, 2011 in Science Communications snowflake With winter just around the corner, can snow be far behind? We've all heard that no two snowflakes are alike, but what do we really know about them? Snowflakes always have six sides. Their form and shape depends on temperature and moisture. Snowflake shapes fall into six main categories: plate (flat), column, stars, dendrite (lacy), needle and capped column. When it is extremely cold, snow becomes fine and powdery and the snowflakes' design becomes simpler, usually needle or rod shaped. When the temperature is close to freezing point, snowflakes become much larger and more complex in design. Related Topics: Princeton Plasma Physics Laboratory, Science Accelerator, snowflake, tokamak

13

Combination moisture and hydrogen getter  

DOE Patents [OSTI]

A combination moisture and hydrogen getter comprises (a) a moisture getter comprising a readily oxidizable metal; and (b) a hydrogen getter comprising (1) a solid acetylenic compound and (2) a hydrogenation catalyst. A method of scavenging moisture from a closed container uses the combination moisture and hydrogen getter to irreversibly chemically reduce the moisture and chemically bind the resultant hydrogen.

Harrah, L.A.; Mead, K.E.; Smith, H.M.

1983-09-20T23:59:59.000Z

14

ARM - Measurement - Atmospheric moisture  

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

moisture moisture ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric moisture The moisture content of the air as indicated by several measurements including relative humidity, specific humidity, dewpoint, vapor pressure, water vapor mixing ratio, and water vapor density; note that precipitable water is a separate type. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer

15

ARM - Measurement - Soil moisture  

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

moisture moisture ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil moisture The moisture of the soil measured near the surface. This includes soil wetness and soil water potential. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component CO2FLX : Carbon Dioxide Flux Measurement Systems SOIL : Soil Measurement from the SGP SWATS : Soil Water and Temperature System SEBS : Surface Energy Balance System

16

Fiber optic moisture sensor  

DOE Patents [OSTI]

A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

Kirkham, R.R.

1984-08-03T23:59:59.000Z

17

Roofing Moisture Tolerance  

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

Moisture Control in Low-Slope Roofing: Moisture Control in Low-Slope Roofing: A New Design Requirement A.O. Desjarlais and J.E. Christian, Oak Ridge National Laboratory N. A. Byars, University of North Carolina Charlotte This calculator performs the calculations described in Moisture Control in Low-Slope Roofing: A New Design Requirement. This calculator allows the roofing practitioner to determine if a roofing system design requires a vapor retarder or if the system can be modified to enhance its tolerance for small leaks. To use the calculator, simply supply the following information and click on the "Check Roof" button at the bottom of the form. Insulation Type and Thickness (in inches): Fiberboard Polyisocyanurate 0.5 1.0 1.5 2.0 2.5 3.0 Layer 1 None Fiberboard Polyisocyanurate 0.5 1.0 1.5 2.0 2.5 3.0 Layer 2

18

Moisture Control | Department of Energy  

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

Moisture Control Moisture Control Moisture Control May 30, 2012 - 10:41am Addthis Controlling moisture can make your home more energy-efficient, less costly to heat and cool, more comfortable, and prevent mold growth. Controlling moisture can make your home more energy-efficient, less costly to heat and cool, more comfortable, and prevent mold growth. What does this mean for me? Moisture can support the growth of mold and mildew and can even rot structural members in extreme cases. Effective strategies for addressing moisture in your home will depend on your climate and how your home is constructed. How does it work? Moisture can enter a home as water vapor and as liquid water. Sealing air leaks and providing paths for liquid water to move away from the building can prevent moisture from causing health and comfort problems in your home.

19

Moisture absorption modeling using design of experiments  

E-Print Network [OSTI]

Moisture Absorption Modeling Using Design of Experimentssurface pro?les of moisture absorption for the two laminatetheir amounts of moisture absorption are different. The

Yong, Virginia; Hahn, H. Thomas

2006-01-01T23:59:59.000Z

20

Moisture Metrics Project  

SciTech Connect (OSTI)

the goal of this project was to determine the optimum moisture levels for biomass processing for pellets commercially, by correlating data taken from numerous points in the process, and across several different feedstock materials produced and harvested using a variety of different management practices. This was to be done by correlating energy consumption and material through put rates with the moisture content of incoming biomass ( corn & wheat stubble, native grasses, weeds, & grass straws), and the quality of the final pellet product.This project disseminated the data through a public website, and answering questions form universities across Missouri that are engaged in biomass conversion technologies. Student interns from a local university were employed to help collect data, which enabled them to learn firsthand about biomass processing.

Schuchmann, Mark

2011-08-31T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

ARM - Measurement - Soil moisture flux  

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

moisture flux moisture flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil moisture flux A quantity measured according to the formula B = {lambda}(dq/dz), where {lambda} is the conductivity of the soil that the moisture is moving through. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts

22

CDIAC Atmospheric Moisture Data Sets  

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

Atmospheric Moisture Atmospheric Moisture CDIAC Climate Holdings Containing Atmospheric Moisture Data Global Data Sets Data Set Name Investigators Data Type/Format Period of Record Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (CDIAC NDP-026C) C.J. Hahn, S.G. Warren, and R. Eastman Six-hourly synoptic observations of dew point depression (combined with air temperature) Land 1971-2009; Ocean 1952-2008 Regional Data Sets Data Set Name Investigators Data Type/Format Period of Record Six- and Three-Hourly Meteorological Observations from 223 Former U.S.S.R. Stations (CDIAC NDP-048) V. Razuvaev et al. Surface stations; 6- and 3-hourly observations of relative humidity, vapor pressure, humidity deficit, and dew point temperature Varies by station; through 2000

23

HEAT AND MOISTURE TRANSFER THROUGH CLOTHING  

E-Print Network [OSTI]

J. & Cheng, X. -Y. 2005. Heat and moisture transfer withof the combined diffusion of heat and water vapor throughMathematical simulation of heat and moisture transfer in a

Voelker, Conrad; Hoffmann, Sabine; Kornadt, Oliver; Arens, Edward; Zhang, Hui; Huizenga, Charlie

2009-01-01T23:59:59.000Z

24

Heat and moisture transfer through clothing  

E-Print Network [OSTI]

Mathematical simulation of heat and moisture transfer in aand R. C. Eberhart (ed), Heat transfer in medicine andFan, J. 2008. Study of heat and moisture transfer within

Voelker, Conrad; Hoffmann, Sabine; Kornadt, Oliver; Arens, Edward; Zhang, Hui; Huizenga, Charlie

2009-01-01T23:59:59.000Z

25

Heat and moisture transfer through clothing  

E-Print Network [OSTI]

R. C. Eberhart (ed), Heat transfer in medicine and biology.Convective and radiative heat transfer coefficients forsimulation of heat and moisture transfer in a human-

Voelker, Conrad; Hoffmann, Sabine; Kornadt, Oliver; Arens, Edward; Zhang, Hui; Huizenga, Charlie

2009-01-01T23:59:59.000Z

26

The Measurement of the Moisture Concentration of Selected Test...  

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

The Measurement of the Moisture Concentration of Selected Test Model Ore Zones (April 1977) The Measurement of the Moisture Concentration of Selected Test Model Ore Zones (April...

27

HEAT AND MOISTURE TRANSFER THROUGH CLOTHING  

E-Print Network [OSTI]

R. C. Eberhart (ed), Heat transfer in medicine and biology.Convective and radiative heat transfer coefficients forCheng, X. -Y. 2005. Heat and moisture transfer with sorption

Voelker, Conrad; Hoffmann, Sabine; Kornadt, Oliver; Arens, Edward; Zhang, Hui; Huizenga, Charlie

2009-01-01T23:59:59.000Z

28

The Soil Moisture Active Passive (SMAP) Mission  

E-Print Network [OSTI]

The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey. SMAP will make global measurements of ...

Entekhabi, Dara

29

Soil Moisture Memory in Climate Models  

Science Journals Connector (OSTI)

Water balance considerations at the soil surface lead to an equation that relates the autocorrelation of soil moisture in climate models to 1) seasonality in the statistics of the atmospheric forcing, 2) the variation of evaporation with soil ...

Randal D. Koster; Max J. Suarez

2001-12-01T23:59:59.000Z

30

Airborne microwave remote sensing of soil moisture  

E-Print Network [OSTI]

Newton [1]) . . . . . . . . . . . ~ ~ ~ 23 10 12 Location of aircraft soil moisture experiments. . . Soil types for fields at the 1975 Phoenix experiment. Soil types for fields at the 1976 Finney County, Kansas experiment . 34 43 44 13 14 Soil... Algorithms. Penetration Depth. EXPERII4ENTAL PROGRAM. I ntr oducti on. Phoenix, 1975. Lawrence-Topeka, Kansas Experiment Fi nney County Experiment South Dakota Experiment. . . . . . Colby, Kansas Experiment . . Moisture Sampling and Accuracy...

Black, Quentin Robert

2012-06-07T23:59:59.000Z

31

Assessment of NGNP Moisture Ingress Events  

SciTech Connect (OSTI)

An assessment of modular HTGR moisture ingress events, making use of a phenomena identification and ranking process, was conducted by a panel of experts in the related areas for the U.S. next generation nuclear plant (NGNP) design. Consideration was given mainly to the prismatic core gas-cooled reactor configurations incorporating a steam generator within the primary circuit.

Bill Landman

2011-04-01T23:59:59.000Z

32

1. Control moisture. 2. Clean regularly.  

E-Print Network [OSTI]

run help control pollutants. When outdoor air is brought into the home, ideally it is filtered1. Control moisture. 2. Clean regularly. 3. Ventilate to improve indoor air quality. 4. Keep provides a way to remove pollutants and to control humidity. Windows that open and exhaust fans #12;that

33

Evaluation of the Effective Moisture Penetration Depth Model for Estimating Moisture Buffering in Buildings  

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

Evaluation of the Effective Evaluation of the Effective Moisture Penetration Depth Model for Estimating Moisture Buffering in Buildings J. Woods, J. Winkler, and D. Christensen National Renewable Energy Laboratory Technical Report NREL/TP-5500-57441 January 2013 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Moisture Penetration Depth Model for Estimating Moisture Buffering in Buildings J. Woods, J. Winkler, and D. Christensen National Renewable Energy Laboratory Prepared under Task No. BE12.0201

34

Investigation of Soil Moisture - Vegetation Interactions in Oklahoma  

E-Print Network [OSTI]

, but not well understood climate factor. This study examines soil moisture-vegetation health interactions using both in situ observations and land surface model simulations. For the observational study, soil moisture is taken from 20 in situ Oklahoma Mesonet...

Ford, Trenton W.

2013-03-06T23:59:59.000Z

35

The spatial and temporal organization of soil moisture  

E-Print Network [OSTI]

Runoff, infiltration, evaporation and transpiration and-at climatic scales-precipitation are hydrologic processes that strongly depend on soil moisture. From a descriptive viewpoint, soil moisture is. characterized by an extremely high degree...

Vogel, Gregor Klaus

1995-01-01T23:59:59.000Z

36

Soil moisture modeling and scaling using passive microwave remote sensing  

E-Print Network [OSTI]

Soil moisture in the shallow subsurface is a primary hydrologic state governing land-atmosphere interaction at various scales. The primary objectives of this study are to model soil moisture in the root zone in a distributed manner and determine...

Das, Narendra N.

2007-04-25T23:59:59.000Z

37

A soil moisture availability model for crop stress prediction  

E-Print Network [OSTI]

is composed of three major components, which are, a) calcul ation of evapotranspiration, b) infiltration of moisture into the soil, c) redistribution of the soil moisture. Other edaphic models have been developed by Hill [1974], Bai er and Robertson... inputs could result in the development of moist layers in the lower soil layer that would not be accounted for if the moisture were uniformly redistributed. As the cycle progesses, redistribution and moisture depletion do occur, until there 1s less...

Gay, Roger Franklin

1983-01-01T23:59:59.000Z

38

Predicting farm machinery operation time with a soil moisture mode  

E-Print Network [OSTI]

Criteria Used to Determine Trafficability Other Moisture Balance Models Evapotranspiration Moisture Redistribution . Runoff and Infiltration 10 Probability Distribution of Available Field Time . . 11 Chapter Summary III PROCEDURES Soil Moisture... Model Step 1 - Infiltration and Drainage Step 2 - Soil Evaporation . 12 14 14 20 vii 1 Chapter III (cont. ) Step 3 - Plant Evaporation Final Step - Redistribution Page 22 24 Trafficability Criteria Probability Distribution of Available...

Bordovsky, James Paul

1978-01-01T23:59:59.000Z

39

Moisture Control Handbook: New, low-rise, residential construction  

SciTech Connect (OSTI)

Moisture problems are prevalent all over North America, almost independent of climate. They are viewed as one of the single largest factors limiting the useful service life of a building. Elevated levels of moisture in buildings also can lead to serious health effects for occupants. Until recently, very little consensus on moisture control existed in the building community. The information available was typically incomplete, contradictory, usually limited to specific regions, and in many cases misleading. A need to develop a document which presented the issues relating to moisture from a building science or ``systems`` approach existed. This handbook attempts to fill that need and illustrates that energy-efficient, tight envelope design is clearly part of the solution to healthy buildings when interior relative humidity, temperature, and pressure are controlled simultaneously. The first three chapters of the handbook present the basic principles of moisture problems and solutions in buildings. Chapter 1 -- Mold, Mildew, and Condensation, examines surface moisture problems. Chapter 2 -- Moisture Movement, examines how building assemblies get wet from both the exterior and interior. Chapter 3 -- Wetting and Drying of Building Assemblies, introduces the concepts of acceptable performance, moisture balance, and the redistribution of moisture within building assemblies. Chapters 4 through 6 apply the concepts outlined in the previous chapters and present specific moisture control practices for three basic US climate zones. The advantages and disadvantages of several wall, foundation, and roof assemblies are discussed for each climate zone.

Lstiburek, J. [Building Science Corp., Chestnut Hill, MA (United States); Carmody, J. [Minnesota Univ., Minneapolis, MN (United States). Underground Space Center

1991-10-01T23:59:59.000Z

40

Moisture and temperature effects in composite materials  

E-Print Network [OSTI]

) Chairman of Advisory Committee: Dr. Y. Weitsman Th1s thesis concerns env1ronmental effects in graphite/epoxy composites, with emphas1s on environmentally induced damage. The thesis consists of two major parts. The first part presents an experimental 1... weight gain (in %) of a 12-ply unidirectional AS4/3502 graphite/epoxy laminate during exposure to 346'K, 95% R. H. environment. Data (i) and predictions of Flck's law (solid line) Moisture content (ln %) of a 12-ply unidirectional AS4/3502 graphite...

Fang, Gwo-Ping

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Recent News from the National Labs | Department of Energy  

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

January 13, 2012 January 13, 2012 A Livestream with our Latest Nobel Prize Winner Dr. Perlmutter presents, "Supernovae, Dark Energy and the Accelerating Universe: How the Energy Department Helped to Win (yet another) Nobel Prize." January 12, 2012 Snowflakes always have six sides, their form and shape depend on temperature and moisture -- and they may have also inspired a pathway to a new alternative source of energy. | Image courtesy of SnowCrystals.com. Snowflake Science Physicists at the Princeton Plasma Physics Laboratory are using a device called a "snowflake divertor" to solve one of the grand challenges of magnetic fusion. December 30, 2011 Researchers at Brookhaven National Lab (BNL) are studying how radiation affects DNA, specifically a tumor-suppressor protein called p53, which deploys cell repair efforts. | Photo courtesy of National Institute of Health.

42

Evaluation of moisture damage within asphalt concrete mixes  

E-Print Network [OSTI]

Pavements are a major part of the infrastructure in the United States. Moisture damage of these pavements is a significant problem. To predict and prevent this kind of moisture damage a great deal of research has been performed on this issue in past...

Shah, Brij D.

2004-09-30T23:59:59.000Z

43

EFFECTS OF MOISTURE IN THE 9975 SHIPPING PACKAGE FIBERBOARD ASSEMBLY  

SciTech Connect (OSTI)

The fiberboard assembly used in 9975 shipping packages as an impact-absorption and insulation component has the capacity to absorb moisture, with an accompanying change to its properties. While package fabrication requirements generally maintain the fiberboard moisture content within manufacturing range, there is the potential during use or storage for atypical handling or storage practices which result in the absorption of additional moisture. In addition to performing a transportation function, the 9975 shipping packages are used as a facility storage system for special nuclear materials at the Savannah River Site. A small number of packages after extended storage have been found to contain elevated moisture levels. Typically, this condition is accompanied by an axial compaction of the bottom fiberboard layers, and the growth of mold. In addition to potential atypical practices, fiberboard can exchange moisture with the surrounding air, depending on the ambient humidity. Laboratory data have been generated to correlate the equilibrium moisture content of cane fiberboard with the humidity of the surrounding air. These data are compared to measurements taken within shipping packages. With a reasonable measurement of the fiberboard moisture content, an estimate of the fiberboard properties can be made. Over time, elevated moisture levels will negatively impact performance properties, and promote fiberboard mold growth and resultant degradation.

Daugherty, W.; Dunn, K.; Murphy, J.; Hackney, B.

2010-02-11T23:59:59.000Z

44

Heat and moisture transfer through clothing for a person with contact surface  

E-Print Network [OSTI]

S, Kornadt O et al (2009) Heat and moisture transfer throughTopic A7: Thermal comfort Heat and moisture transfer throughClothing, Modelling, Heat transfer, Moisture transfer,

Fu, Ming; Yu, Tiefeng; Zhang, Hui; Weng, Wenguo; Yuan, Hongyong

2014-01-01T23:59:59.000Z

45

Soil Moisture Memory in AGCM Simulations: Analysis of Global LandAtmosphere Coupling Experiment (GLACE) Data  

Science Journals Connector (OSTI)

Soil moisture memory is a key aspect of landatmosphere interaction and has major implications for seasonal forecasting. Because of a severe lack of soil moisture observations on most continents, existing analyses of global-scale soil moisture ...

Sonia I. Seneviratne; Randal D. Koster; Zhichang Guo; Paul A. Dirmeyer; Eva Kowalczyk; David Lawrence; Ping Liu; David Mocko; Cheng-Hsuan Lu; Keith W. Oleson; Diana Verseghy

2006-10-01T23:59:59.000Z

46

The Effect of Moisture Absorption on the Physical Properties of Polyurethane Shape Memory Polymer Foams  

E-Print Network [OSTI]

. 6 2. EXPERIMENTAL 2.1 Polyurethane foam synthesis and sample preparation Polyurethane SMP foams were prepared based on a technique developed by Dr. Thomas S. Wilson at Lawrence Livermore National Laboratory. Prepolymers were made from...

Yu, Ya-Jen

2012-07-16T23:59:59.000Z

47

E-Print Network 3.0 - active heat moisture Sample Search Results  

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

mass: an adequate supply of soil moisture, sufficiently cold air temperatures to cause heat loss... . Freezing times given in Table 1 increased significantly with soil moisture...

48

Moisture levels at which rice grains will not fissure from moisture adsorption  

E-Print Network [OSTI]

than their equilibrium relative humidity and weight readings were taken at intervals of 2, 4, 6, 8, 10 and 12 h. Samples of rough, brown and milled rice equilibrated at 75, 6% relative humidity adsorbed more moisture during the initial 6 h... of exposure than samples equilibrated at a highez relative humidity, 86. 6%, when subjected to vapor-pressure changes of 0. 436 and 0. 387 kPa, respectively. In contrast, samples at the higher equilibrium relative humidity (86. 6%) had adsorbed more...

Kamau, John Mugeto

2012-06-07T23:59:59.000Z

49

Soil Density/Moisture Gauge | Department of Energy  

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

Soil Density/Moisture Gauge Soil Density/Moisture Gauge Soil Density/Moisture Gauge This scenario provides the planning instructions, guidance, and evaluation forms necessary to conduct an exercise involving a highway shipment of a soil moisture/density gauge (Class 7 - Radioactive). This exercise manual is one in a series of five scenarios developed by the Department of Energy Transportation Emergency Preparedness Program (TEPP). Responding agencies may include several or more of the following: local municipal and county fire, police, sheriff and Emergency Medical Services (EMS) personnel; state, local, and federal emergency response teams; emergency response contractors; and other emergency response resources that could potentially be provided by the carrier and the originating facility (shipper).

50

Innovative Drying Technology Extracts More Energy from High Moisture Coal |  

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

Innovative Drying Technology Extracts More Energy from High Innovative Drying Technology Extracts More Energy from High Moisture Coal Innovative Drying Technology Extracts More Energy from High Moisture Coal March 11, 2010 - 12:00pm Addthis Washington, DC - An innovative coal-drying technology that will extract more energy from high moisture coal at less cost and simultaneously reduce potentially harmful emissions is ready for commercial use after successful testing at a Minnesota electric utility. The DryFining(TM) technology was developed with funding from the first round of the U.S. Department of Energy's Clean Coal Power Initiative (CCPI). Great River Energy of Maple Grove, Minn., has selected the WorleyParsons Group to exclusively distribute licenses for the technology, which essentially uses waste heat from a power plant to reduce moisture content

51

Sources of Atmospheric Moisture for the La Plata River Basin  

Science Journals Connector (OSTI)

The La Plata River basin (LPRB) is the second largest basin of South America and extends over a highly populated and socioeconomically active region. In this study, the spatiotemporal variability of sources of moisture for the LPRB are quantified ...

J. Alejandro Martinez; Francina Dominguez

2014-09-01T23:59:59.000Z

52

The effect of moisture on a glass/epoxy composite  

E-Print Network [OSTI]

Research was done to determine the effect of moisture on the transverse tensile strength and the interfacial shear strength of a glass/epoxy composite. Specimens with two different fiber sizings, one epoxy compatible and one vinyl-ester compatible...

Chatawanich, Candy Suda

2012-06-07T23:59:59.000Z

53

A Preliminary Study Towards Consistent Soil Moisture from AMSR2  

Science Journals Connector (OSTI)

A preliminary study towards consistent soil moisture products from the Advanced Microwave Scanning Radiometer 2 (AMSR2) is presented. Its predecessor, the Advanced Microwave Scanning Radiometer Earth Observing System (AMSR-E), has provided Earth ...

Robert M. Parinussa; Thomas R.H. Holmes; Niko Wanders; Wouter A. Dorigo; Richard A.M. de Jeu

54

A simplified formulation for moisture diffusion through partly saturated clays  

E-Print Network [OSTI]

to infiltration of moisture from the ground surface can induce sloughing and shallow slide failures. This issue creates a significant maintenance problem for the Texas Department of Transportation (TxDOT). The postulated mechanism for these slope failures is: 1...

Tang, Dina V

2003-01-01T23:59:59.000Z

55

Observation of moisture tendencies related to shallow convection  

Science Journals Connector (OSTI)

Tropospheric moisture is a key factor controlling the global climate and its variability. For instance, moistening of the lower troposphere is necessary to trigger the convective phase of a Madden-Julian Oscillation. However, the relative ...

H. Bellenger; K. Yoneyama; M. Katsumata; T. Nishizawa; K. Yasunaga; R. Shirooka

56

The NASA Soil Moisture Active Passive (SMAP) mission: Overview  

E-Print Network [OSTI]

The Soil Moisture Active Passive (SMAP) mission is one of the first Earth observation satellites being developed by NASA in response to the National Research Council's Decadal Survey. Its mission design consists of L-band ...

O'Neill, Peggy

57

Moisture Diffusion in Asphalt Binders and Fine Aggregate Mixtures  

E-Print Network [OSTI]

cost in highway maintenance and vehicle operations. One key mechanism of how moisture reaches the asphalt-aggregate interface is by its permeation or diffusion through the asphalt binder or mastic. Different techniques are available for diffusion...

Vasconcelos, Kamilla L.

2011-08-08T23:59:59.000Z

58

Moisture Risk in Unvented Attics Due to Air Leakage Paths  

SciTech Connect (OSTI)

IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

Prahl, D.; Shaffer, M.

2014-11-01T23:59:59.000Z

59

Three Case Studies: Moisture Control in a Hot, Humid Climate  

E-Print Network [OSTI]

This paper will present case studies of the investigations of three different buildings exhibiting moisture control problems along the Gulf Coast. We will briefly discuss the original, or existing, conditions that led to our involvement, as well...

French, W. R.

2002-01-01T23:59:59.000Z

60

Evaluation of Moisture Susceptibility of Warm Mix Asphalt  

E-Print Network [OSTI]

, the results from this study suggest that the inclusion of recycled asphalt pavement (RAP) or an anti-stripping agent may alleviate possible moisture susceptibility issues in the early life during wet, winter weather conditions. While some laboratory test...

Garcia Cucalon, Maria Lorena

2013-05-03T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Rheological Behavior of Polyamide 11 with Varying Initial Moisture Content  

E-Print Network [OSTI]

moisture levels and that the plant en- vironment conditions should be under strict control. Knowledge is often used in flexible pipe applications for offshore oilfield exploration. Because of the high

62

The values and practices associated with high moisture corn  

E-Print Network [OSTI]

THE VALUES AND PRACTICES ASSOCIATED WITH HIGH MOISTURE CORN A Professional Paper by Charles B. Finch Submitted as Partial Fulfillment of the Professional Internship Requirements for the Texas A&M University Degree of Master of Agriculture...THE VALUES AND PRACTICES ASSOCIATED WITH HIGH MOISTURE CORN A Professional Paper by Charles B. Finch Submitted as Partial Fulfillment of the Professional Internship Requirements for the Texas A&M University Degree of Master of Agriculture...

Finch, Charles B

2012-06-07T23:59:59.000Z

63

CPAC optical moisture monitoring: Characterization of composition and physical effects on moisture determination Task 2A report  

SciTech Connect (OSTI)

The impact of particle size and chemical composition variations on determination of tank simulant moisture from near infrared (NIR) optical spectra are presented. This work shows particle size and chemical variations will impact moisture predictions from NIR spectra. However, the prediction errors can be minimized if calibration models are built with samples containing these variations as interferents. Prior work showed the NIR spectral region (1100 to 2500 nm) could be used to predict moisture content of BY-104 tank simulant with a standard error less of approximately 0.5 wt%. Particle size will increase moisture prediction error if calibration-models do not include the same particle size ranges as unknown samples. A combined particle size model with 0-420 {times}10{sup -6}m, 420-841 {times} 10{sup -6}m, and 841 {times} 10{sup -6} m-2 mm diameter particles predicted 0.59, 0.34 nd 0.23 wt% errors respectively for samples containing only these size ranges and 0.80 wt% error for a samples with all particle size ranges. Chemical composition would also increase moisture prediction error if calibration model samples chemically differ from unknown samples. For a BY-104 simulant, increases in NaOH, NaAlO{sub 2}, Na{sub 2} SiO{sub 3}, and Na{sub 3}PO{sub 4} produced moisture predictions that were lower than the actual moisture levels while increases in FE(NO{sub 3}){sub 3}, Ca(NO{sub 3}){sub 2}, and Mg (NO{sub 3}){sub 2} resulted in a higher than actual moisture prediction. Systematic changes in the NIR spectra could be observed for these families of materials. When all of the composition variations were included in a single model, the model had a moisture prediction error of 1.41 wt% as compared to a 2.96 wt% error without model changes. This work shows a calibration model based on a single set of tightly controlled experimental conditions will tend to have somewhat larger prediction errors when applied to samples collected with variations outside of such conditions.

Veltkamp, D.J.

1994-11-15T23:59:59.000Z

64

Determination of moisture in solids using high frequency methods  

E-Print Network [OSTI]

-200 . ::icr oar?nero DC motor, 4, ' inch, 556 ohms l ~ 5 volt dry cell to ground R3 was tied in above the rectifier Dla By controlling the value of R3 ~ the sensitivity could be raised or lowered. The amdt could be obtained by adjusting R3 to about 6fo... the desiocator would hold a constant vacuum of 66 cm of mercury ovor a 24 hour periods This materially though uot completely devoid of i'ree water, was the salt that will be referred to ac the moisture samplers The actual moisture in the sample was detezm...

Burton, Melven Boyd

2012-06-07T23:59:59.000Z

65

Surface moisture measurement system hardware acceptance test report  

SciTech Connect (OSTI)

This document summarizes the results of the hardware acceptance test for the Surface Moisture Measurement System (SMMS). This test verified that the mechanical and electrical features of the SMMS functioned as designed and that the unit is ready for field service. The bulk of hardware testing was performed at the 306E Facility in the 300 Area and the Fuels and Materials Examination Facility in the 400 Area. The SMMS was developed primarily in support of Tank Waste Remediation System (TWRS) Safety Programs for moisture measurement in organic and ferrocyanide watch list tanks.

Ritter, G.A., Westinghouse Hanford

1996-05-28T23:59:59.000Z

66

System design description for surface moisture measurement system (SMMS)  

SciTech Connect (OSTI)

The SMMS has been developed to measure moisture in the top few centimeters of tank waste. The SMMS development was initiated by the preliminary findings of SAR-033, and does not necessarily fulfill any established DQO. After the SAR-033 is released, if no significant changes are made, moisture measurements in the organic waste tanks will rapidly become a DQO. The SMMS was designed to be installed in any 4 inch or larger riser, and to allow maximum adjustability for riser lengths, and is used to deploy a sensor package on the waste surface within a 6 foot radius about the azimuth. The first sensor package will be a neutron probe.

Vargo, G.F.

1996-09-23T23:59:59.000Z

67

Analysis of Emission Shapes  

E-Print Network [OSTI]

Shapes of relative emission sources can be accessed by expanding shapes of correlations at low relative velocities in pair center of mass in Cartesian harmonics. Coefficients of expansion for correlations are related to the respective coefficients of expansion for the sources through one dimensional integral transforms involving properties of pair relative wavefunctions. The methodology is illustrated with analyses of NA49 and PHENIX correlation data.

P. Danielewicz

2007-07-03T23:59:59.000Z

68

Analysis of Emission Shapes  

E-Print Network [OSTI]

Shapes of relative emission sources can be accessed by expanding shapes of correlations at low relative velocities in pair center of mass in Cartesian harmonics. Coefficients of expansion for correlations are related to the respective coefficients of expansion for the sources through one dimensional integral transforms involving properties of pair relative wavefunctions. The methodology is illustrated with analyses of NA49 and PHENIX correlation data.

Danielewicz, P

2007-01-01T23:59:59.000Z

69

Role of Moisture in Adsorption, Photocatalytic Oxidation, and  

E-Print Network [OSTI]

various Hg emission sources. A novel low-cost methodology using titanium dioxide (TiO2) nanoparticlesRole of Moisture in Adsorption, Photocatalytic Oxidation, and Reemission of Elemental Mercury gas. Without UV irradiation, Hg0 adsorption was found to be insignificant, but it could be enhanced

Li, Ying

70

Specific heat of apple at different moisture contents and temperatures  

E-Print Network [OSTI]

This work discusses results of experimental investigations of the specific heat, $C$, of apple in a wide interval of moisture contents ($W=0-0.9$) and temperatures ($T = 283-363$ K). The obtained data reveal the important role of the bound water in determination of $C(W,T)$ behaviour. The additive model for description of $C(W)$ dependence in the moisture range of $0.1apple was considered as a mixture of water and hydrated apple material (water plasticised apple) with specific heat $C_h$. The difference between $C_h$ and specific heat of dry apple, $\\Delta Cb=C_h-C_d$, was proposed as a measure of the excess contribution of bound water to the specific heat. The estimated amounts of bound water $W_b$ were comparable with the monolayer moisture content in apple. The analytical equation was proposed for approximation of $C(W,T)$ dependencies in the studied intervals of moisture content and temperature.

Viacheslav Mykhailyk; Nikolai Lebovka

2013-05-11T23:59:59.000Z

71

MOISTURE AND SURFACE AREA MEASUREMENTS OF PLUTONIUM-BEARING OXIDES  

SciTech Connect (OSTI)

To ensure safe storage, plutonium-bearing oxides are stabilized at 950 C for at least two hours in an oxidizing atmosphere. Stabilization conditions are expected to decompose organic impurities, convert metals to oxides, and result in moisture content below 0.5 wt%. During stabilization, the specific surface area is reduced, which minimizes readsorption of water onto the oxide surface. Plutonium oxides stabilized according to these criteria were sampled and analyzed to determine moisture content and surface area. In addition, samples were leached in water to identify water-soluble chloride impurity content. Results of these analyses for seven samples showed that the stabilization process produced low moisture materials (< 0.2 wt %) with low surface area ({le} 1 m{sup 2}/g). For relatively pure materials, the amount of water per unit surface area corresponded to 1.5 to 3.5 molecular layers of water. For materials with chloride content > 360 ppm, the calculated amount of water per unit surface area increased with chloride content, indicating hydration of hygroscopic salts present in the impure PuO{sub 2}-containing materials. The low moisture, low surface area materials in this study did not generate detectable hydrogen during storage of four or more years.

Crowder, M.; Duffey, J.; Livingston, R.; Scogin, J.; Kessinger, G.; Almond, P.

2009-09-28T23:59:59.000Z

72

Measurement scheduling for soil moisture sensing: From physical models to optimal control  

E-Print Network [OSTI]

In this paper, we consider the problem of monitoring soil moisture evolution using a wireless network of in situ sensors. Continuously sampling moisture levels with these sensors incurs high-maintenance and energy consumption ...

Shuman, David I.

73

Monitoring Agricultural Risk in Canada Using L-Band Passive Microwave Soil Moisture from SMOS  

Science Journals Connector (OSTI)

Soil moisture from Soil Moisture Ocean Salinity (SMOS) passive microwave satellite data was assessed as an information source for identifying regions experiencing climate-related agricultural risk for a period from 2010-2013. Both absolute soil ...

Catherine Champagne; Andrew Davidson; Patrick Cherneski; Jessika LHeureux; Trevor Hadwen

74

Measurements and modeling of moisture diffusion processes in transformer insulation using interdigital dielectrometry sensors  

E-Print Network [OSTI]

The presence of moisture in a transformer deteriorates the transformer insulation by decreasing its electrical, mechanical, and thermal strength. Therefore, it is important to monitor the moisture condition in both liquid ...

Du, Yanqing, 1971-

1999-01-01T23:59:59.000Z

75

NASA's Soil Moisture Active Passive (SMAP) Mission and Opportunities for Applications Users  

E-Print Network [OSTI]

Water in the soilboth its amount (soil moisture) and its state (freeze/thaw)plays a key role in water and energy cycles, in weather and climate, and in the carbon cycle. Additionally, soil moisture touches upon human ...

Brown, Molly E.

76

Condensation of Atmospheric Moisture from Tropical Maritime Air Masses as a Freshwater Resource  

Science Journals Connector (OSTI)

...1965 ). Condensation of atmospheric moisture from...whereby potable water may be obtained...system of atmospheric moisture recovery that we propose...of fresh water per day...readily use the atmospheric water recovery method. We...

Robert D. Gerard; J. Lamar Worzel

1967-09-15T23:59:59.000Z

77

Building America Technology Solutions for New and Existing Homes: Moisture Management of High-R Walls  

Broader source: Energy.gov [DOE]

This project by Building Science Corporation focuses on how eight high-R walls handle the three main sources of moistureconstruction moisture, air leakage condensation, and bulk water leaks.

78

Assimilation of Remotely Sensed Soil Moisture and Snow Depth Retrievals for Drought Estimation  

Science Journals Connector (OSTI)

The accurate knowledge of soil moisture and snow conditions is important for the skillful characterization of agricultural and hydrologic droughts, which are defined as deficits of soil moisture and streamflow, respectively. This article examines ...

Sujay V. Kumar; Christa D. Peters-Lidard; David Mocko; Rolf Reichle; Yuqiong Liu; Kristi R. Arsenault; Youlong Xia; Michael Ek; George Riggs; Ben Livneh; Michael Cosh

2014-12-01T23:59:59.000Z

79

A Coupled Micromechanical Model of Moisture-Induced Damage in Asphalt Mixtures: Formulation and Applications  

E-Print Network [OSTI]

The deleterious effect of moisture on the structural integrity of asphalt mixtures has been recognized as one of the main causes of early deterioration of asphalt pavements. This phenomenon, usually referred to as moisture damage, is defined...

Caro Spinel, Silvia

2011-02-22T23:59:59.000Z

80

Modeling and application of soil moisture at varying spatial scales with parameter scaling  

E-Print Network [OSTI]

The dissertation focuses on characterization of subpixel variability within a satellite-based remotely sensed coarse-scale soil moisture footprint. The underlying heterogeneity of coarse-scale soil moisture footprint is masked by the area...

Das, Narendra Narayan

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Evaluation of a moisture removal device for turbine steam piping. Final report  

SciTech Connect (OSTI)

Moisture-induced erosion and corrosion of nuclear power plant steam pipes is a significant and costly maintenance problem. By removing moisture from steam leaving the high-pressure turbines, high-velocity moisture separators can minimize this damage in a vulnerable system and improve plant thermal performance.

Anderson, R.E.; Draper, K.L.; Kadlec, R.A.; Stoudt, R.A.

1985-04-01T23:59:59.000Z

82

A near-infrared reflectance sensor for soil surface moisture measurement  

Science Journals Connector (OSTI)

Soil moisture is an important soil property that has important functions in various studies and applications, such as agricultural practices, hydrological processes and ecological issues. A near-infrared (NIR) reflectance sensor designed for moisture ... Keywords: Light-emitting diode, Near-infrared reflectance, Relative absorption depth, Soil moisture

Zhe Yin; Tingwu Lei; Qinghong Yan; Zhanpeng Chen; Yuequn Dong

2013-11-01T23:59:59.000Z

83

Shape matching by random sampling  

Science Journals Connector (OSTI)

In order to determine the similarity between two planar shapes, which is an important problem in computer vision and pattern recognition, it is necessary to first match the two shapes as well as possible. As sets of allowed transformation to match shapes ... Keywords: Geometric shape matching, Probabilistic algorithms

Helmut Alt; Ludmila Scharf

2012-07-01T23:59:59.000Z

84

Shape memory alloy thaw sensors  

DOE Patents [OSTI]

A sensor permanently indicates that it has been exposed to temperatures exceeding a critical temperature for a predetermined time period. An element of the sensor made from shape memory alloy changes shape when exposed, even temporarily, to temperatures above the Austenitic temperature of the shape memory alloy. The shape change of the SMA element causes the sensor to change between two readily distinguishable states.

Shahinpoor, Mohsen (Albuquerque, NM); Martinez, David R. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

85

On Heteropolymer Shape Dynamics  

E-Print Network [OSTI]

We investigate the time evolution of the heteropolymer model introduced by Iori, Marinari and Parisi to describe some of the features of protein folding mechanisms. We study how the (folded) shape of the chain evolves in time. We find that for short times the mean square distance (squared) between chain configurations evolves according to a power law, $D \\sim t ^\

Pawel Pliszka; Enzo Marinari

1992-07-09T23:59:59.000Z

86

The Shapes of Animals  

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

Shapes of Animals Shapes of Animals Nature Bulletin No. 698 December 15, 1962 Forest Preserve District of Cook County Seymour Simon, President David H. Thompson, Senior Naturalist THE SHAPES OF ANIMALS The shape of an animal tells a great deal about the kind of life it leads. Unlike common plants which stay rooted to one spot, they are active creatures that move about under their own power. They crawl, walk, run, jump, climb, dig, swim or fly. They hunt food, make homes, produce young, flee from their enemies or fight them. Certain body proportions and types of legs, wings or other features go along with each habit of life. Animals, even when they are at rest, give the impression of being ready to do something or go somewhere. For example, animals that specialize in jumping, such as the rabbit, frog, flea, grasshopper and kangaroo, have long powerful hind legs. The climbers may have the grasping feet of the opossum and raccoon; the hooked claws of tree squirrels, cats, woodpeckers and many insects; or the suction cups of the tree frog's toes, or the housefly's feet, by which they can walk up a window pane or upside down across a ceiling. The best diggers -- the mole, woodchuck, badger and the underground young of a 17-year cicada -- have short stout forelegs equipped with heavy claws for scooping earth.

87

EXPERIMENTAL I KM SOIL MOISTURE PRODUCTS FROM ENVISAT ASAR FOR SOUTHERN AFRICA  

E-Print Network [OSTI]

Soil moisture is an important environmental variable and a key element in the Earths energy, water and carbon cycle. Monitoring soil moisture over large areas is only feasible using remote sensing. In this paper, a change detection approach based on an extensive Envisat ASAR Global Mode data archive is presented. Actual backscatter measurements are compared to two reference values representing dry and wet soil conditions. Maps showing the surface soil moisture are generated. First validation showed a good agreement with precipitation data and soil moisture measurements. However, the lack of large scale soil moisture monitoring sites makes validation difficult. 1

unknown authors

88

Application of software tools for moisture protection of buildings in  

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

Application of software tools for moisture protection of buildings in Application of software tools for moisture protection of buildings in different climate zones Title Application of software tools for moisture protection of buildings in different climate zones Publication Type Conference Paper Year of Publication 2009 Authors Krus, Martin, Thierry Stephane Nouidui, and Klaus Sedlbauer Conference Name 6th International Conference on Cold Climate, Heating, Ventilating and Air-Conditioning Conference Location Sisimiut, Groenland Abstract The application of software tools for moisture protection of buildings in different climatic zones is demonstrated in this paper. The basics of the programs are presented together with a typical application for a problem specific for the chosen climatic zone. A 1-D calculation has been performed for tropical climate zone with the improvement of a flat roof in Bangkok as an example. For half timbered buildings, which are common in the temperate zone with the 2-D model an infill insulation and its benefits are demonstrated. Finally the combined appliance of the whole building model and the mould risk prognosis model is shown in detail as a special case for the cold climate zone: In heated buildings of cold climate zones the internal climate with its low relative humidity in wintertime often causes discomfort and health problems for the occupants. In case of using air humidifier the risk of mould growth increases. Instead of an uncontrolled humidifying of the dry air an innovativecontrol system using a thermal bridge, which switches the humidifier off when condensation occurs is presented. To quantify the improvement in the comfort while preventing the risk of mould growth for a typical building comparative calculations of the resulting inner climates and its consequences on comfort have been performed.

89

Moisture burst structure in satellite water vapor imagery  

E-Print Network [OSTI]

-season satellite data over the eastern Pacific Ocean, Schroeder (1983) found that about 78% of the local severe weather outbreaks over North America were related to the interaction of a moisture burst with an extratropical weather system. He hypothesized... that the severe weather outbreak was due to the broad zone of upper tropospheric divergence between the polar jet and STJ, and the large momentum t ansport by the STJ which altered the midlatitude circulation. 12 CHAPTER III DATA A. Satellite Imagery...

Ulsh, David Joel

2012-06-07T23:59:59.000Z

90

Investigation of moisture content variations in highway subgrades and bases  

E-Print Network [OSTI]

drawn water from an outside source can cause swelling or heaving much greater than that due to the volume change of pore water. Illore heave occurs when the soil has access to an outside source of ::ater, but heave "an 10 occur by a redistribution... is due Hobert E. Schiller, Jr. , Associate Professor of Civil Engineering, for his comments and advice, and. Spencer J. Euchanan, Professor oi' Civil Engi- neering, for his helpful corn ents, TABLE OF CONTENTS INTRODUCTION SOIL MOISTURE MOVZMZNT...

Jenkins, Edward Donald

1957-01-01T23:59:59.000Z

91

The moisture retention characteristic of four soils from Niger  

E-Print Network [OSTI]

of air at the surface is relatively facile. Hydraulic Conductivity Redistribution of soil water affects plant growth, and the rate and duration of internal moisture flow determines 19 effective soil water storage. This is important to remember when... in sorption (wetting). This characteristic of wetting versus drying for a soil is known as the hysteresis effect (Lal 1979a). Hillel (1980) notes that hysteresis is important for coarse-textured soils in the process of redistribution of soil water...

Landeck, Jonathon Keith

1984-01-01T23:59:59.000Z

92

Shape memory alloy actuator  

DOE Patents [OSTI]

An actuator for cycling between first and second positions includes a first shaped memory alloy (SMA) leg, a second SMA leg. At least one heating/cooling device is thermally connected to at least one of the legs, each heating/cooling device capable of simultaneously heating one leg while cooling the other leg. The heating/cooling devices can include thermoelectric and/or thermoionic elements.

Varma, Venugopal K. (Knoxville, TN)

2001-01-01T23:59:59.000Z

93

ONE DAY ON SHAPE OPTIMIZATION  

E-Print Network [OSTI]

ONE DAY ON SHAPE OPTIMIZATION Tuesday November 17, 2009 Aula Buzano - Dipartimento di Matematica to "Shape Optimization", a very active research field which combines techniques from several areas of mathematics to set out and solve problems where the optimal shape of an object has to be determined, in order

Ceragioli, Francesca

94

Examining the Relationship between Antecedent Soil Moisture and Summer Precipitation in the U.S. Great Plains  

E-Print Network [OSTI]

) and VIC (red)) daily soil moisture (top) and soil moisture anomalies (bottom) at Bushland, TX in 2004 (left) and 2005 (right). ...................................... 38 Figure 4.2 Measured (black) and modeled (DSSAT (blue) and VIC (red...)) daily soil moisture (top) and soil moisture anomalies (bottom) at Powder Mill, MD in 2002 (left) and 2004 (right)................................................ 39 Figure 4.3 Measured (black) and CWB (red) monthly soil moisture from 1995...

Meng, Lei

2010-01-14T23:59:59.000Z

95

Using electrical resistance probes for moisture determination in switchgrass windrows  

SciTech Connect (OSTI)

Determining moisture levels in windrowed biomass is important for both forage producers and researchers. Energy crops such as switchgrass have been troublesome when using the standard methods set for electrical resistance meters. The objectives of this study were to i) develop the methodologies needed to measure MC in switchgrass using electrical resistance meters, ii) to determine the effects of pressure and probe orientation on MC measurement and iii) to generate MC calibration equations for electrical resistance meters using switchgrass in the senescence growth stage. Two meters (Meter 1, Farmex HT-PRO; Meter 2, Delmhorst F-2000) were selected based on commercial availability. A forage compression apparatus was designed and constructed with on-farm materials and methods to provide a simple system of applying pressure achievable by any forage producer or researcher in the field. Two trials were performed to test four levels of moisture contents (10, 20, 30, and 40%), five pressures (0, 1.68, 3.11, 4.55, 6.22 kN/m 2; 0, 35, 65, 95, 130 lb/ft 2), and two probe orientations (axial and transverse) in a 4x5x2 factorial design. Results indicated that meter accuracy increased as pressure increased. Regression models accounted for 91% and 81% of the variation for Meter 1 and Meter 2 at a pressure of 4.55 kN/m 2 (95 lb/ft 2) and a transverse probe orientation. Calibration equations were developed for both meters to improve moisture measurement accuracy for farmers and researchers in the field.

Chesser Jr., G. D.; Davis, J. D.; Purswell, J. L.; Lemus, R.

2011-08-01T23:59:59.000Z

96

Lepidium latifolium reproductive potential and seed dispersal along salinity and moisture gradients  

E-Print Network [OSTI]

Preserve where the salinity gradient was narrow. Conversely,production along the salinity gradient between the freshdispersal along salinity and moisture gradients Samuel P.

Leininger, Samuel P.; Foin, Theodore C.

2009-01-01T23:59:59.000Z

97

Use of thermistors for the measurement of soil moisture and temperature  

E-Print Network [OSTI]

'concentration upon a thermal unit and Bouyoucos block. I'hermistor mounted in plaster of paris. 37 7. Moisture curve for Lufkin I'ine sandy loam. Thermistor mounted in plaster of paris 8. Moisture curve I' or Lufkin i'ine sandy loam. Thermistor mounted...' or Nillacy fine sandy loam Curve 6 - 100 ma used. Curve 7 - 150 ma. used. Thermistors mounted in plaster oi' paris. 45 12. Moisture curve I' or Harlinsen clay. I'hermistor mounted in fired clay (900 C. ) 47 13. Moisture curve for Miller clay. Thermistor...

Bloodworth, Morris E

2012-06-07T23:59:59.000Z

98

Shape transformations of toroidal vesicles  

E-Print Network [OSTI]

Morphologies of genus-1 and 2 toroidal vesicles are studied numerically by dynamically triangulated membrane models and experimentally by confocal laser microscopy. Our simulation results reproduce shape transformations observed in our experiments well. At large reduced volumes of the genus-1 vesicles, obtained vesicle shapes agree with the previous theoretical prediction, in which axisymmetric shapes are assumed: double-necked stomatocyte, discoidal toroid, and circular toroid. However, for small reduced volumes, it is revealed that a non-axisymmetric discoidal toroid and handled discocyte exist in thermal equilibrium in the parameter range, in which the previous theory predicts axisymmetric discoidal shapes. Polygonal toroidal vesicles and subsequent budding transitions are also found. The entropy caused by shape fluctuations slightly modifies the stability of the vesicle shapes.

Hiroshi Noguchi; Ai Sakashita; Masayuki Imai

2014-10-17T23:59:59.000Z

99

Shaping science education in just  

E-Print Network [OSTI]

Shaping science education in just 100 words SIR -- A science workshop held in Venice earlier, cloning, DNA, ecosystem, electricity, electron, element, energy, entropy, environment, enzyme, equilibrium

Cai, Long

100

Pulse shaping with transmission lines  

DOE Patents [OSTI]

A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.

Wilcox, Russell B. (Oakland, CA)

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Shape of the sun  

SciTech Connect (OSTI)

This thesis describes the design, construction, and operation of a telescope capable of measuring the shape of the sun to an accuracy of about one milliarcsecond. The instrument is similar to that used by Dicke in 1966, but with added angular resolution around the solar limb to detect the presence of photospheric fuculae and sunspots. Data were collected on 131 days in the 5-month period May-September 1983 at Mt. Wilson, California. A solar oblateness of ..delta..r = r/sub equator/-r/sub pole/ = 12.8 +/- 2.4 milliarcseconds was measured for the period, where the sun's radius is 960 arcseconds. The 12-day rotating distortion seen in '66 was not detected in the present data set, nor were any higher-frequency oscillations. These reuslts are consistent at the 2sigma level with the oblateness ..delta..r = 7.8 milliarcseconds expected from the sun's surface rotation alone, and inconsistent with Dicke's '66 results. There is some indication in the data that there exists a polar temperature excess of T/sub pole/-T/sub equator/ approx. = 4/sup 0/C in the quiet photosphere. Solar faculae and anomalous lensing effects in the earth's atmosphere were found to be the major sources of systematic error in the measurement, but neither of these error sources can explain the '66 data. In fact no explanation (other than a changing sun) was found for the discrepancy between the two measurements.

Libbrecht, K.G.

1984-01-01T23:59:59.000Z

102

Method and apparatus for fuel gas moisturization and heating  

DOE Patents [OSTI]

Fuel gas is saturated with water heated with a heat recovery steam generator heat source. The heat source is preferably a water heating section downstream of the lower pressure evaporator to provide better temperature matching between the hot and cold heat exchange streams in that portion of the heat recovery steam generator. The increased gas mass flow due to the addition of moisture results in increased power output from the gas and steam turbines. Fuel gas saturation is followed by superheating the fuel, preferably with bottom cycle heat sources, resulting in a larger thermal efficiency gain compared to current fuel heating methods. There is a gain in power output compared to no fuel heating, even when heating the fuel to above the LP steam temperature.

Ranasinghe, Jatila (Niskayuna, NY); Smith, Raub Warfield (Ballston Lake, NY)

2002-01-01T23:59:59.000Z

103

A sensor array system for monitoring moisture dynamics inunsaturated soil  

SciTech Connect (OSTI)

To facilitate investigations of moisture dynamics inunsaturated soil, we have developed a technique to qualitatively monitorpatterns of saturation changes. Field results suggest that this device,the sensor array system (SAS), is suitable for determining changes inrelative wetness along vertical soil profiles. The performance of theseprobes was compared with that of the time domain reflectometry (TDR)technique under controlled and field conditions. Measurements from bothtechniques suggest that by obtaining data at high spatial and temporalresolution, the SAS technique was effective in determining patterns ofsaturation changes along a soil profile. In addition, hardware used inthe SAS technique was significantly cheaper than the TDR system, and thesensor arrays were much easier to install along a soilprofile.

Salve, R.; Cook, P.J.

2007-05-15T23:59:59.000Z

104

ETEM observation of Pt/C electrode catalysts in a moisturized cathode atmosphere  

Science Journals Connector (OSTI)

There have been reports of challenges in designing platinum carbon (Pt/C) electrode catalysts for PEMFC. Pt/C electrode catalysts deactivate much faster on the cathode (in moisturized O2) than on the anode (in H2). To understand influences of moisture and oxygen on the deactivation of the Pt/C catalysts in proton-exchange-membrane fuel cells (PEMFCs), spherical-aberration-corrected environmental transmission electron microscopy (AC-ETEM) was applied with a high-speed CCD camera. Structural changes of the Pt/C electrode catalysts were dynamically recorded in moisturized nitrogen, oxygen and hydrogen. The mass spectrometry confirmed the moisture content (between 5 to 30 %) of nitrogen driving gas through a humidifier. Coalescence of platinum nanoparticles (D = 3.24 nm) was carefully evaluated in pure N2 and moisturized N2 atmosphere. The Pt/C showed considerable structural weakness in a moisturized N2 atmosphere. Comparable results obtained by AC-ETEM in different gas atmospheres also suggested ways to improve the oxygen reduction reaction (ORR). In this paper, the deactivation process due to moisture (hydroxylation) of carbon supports is discussed using for comparison the movement of platinum nanoparticles measured in moisturized nitrogen and pure nitrogen atmospheres.

K Yoshida; X Zhang; N Tanaka; E D Boyes; P L Gai

2014-01-01T23:59:59.000Z

105

Supplemental Material for Forty Five Years of Observed Soil Moisture in the Ukraine: No  

E-Print Network [OSTI]

Supplemental Material for Forty Five Years of Observed Soil Moisture in the Ukraine: No Summer, Kiev, Ukraine 5 Agrometeorology Department, Ukrainian Hydrometeorological Centre, Kiev, Ukraine The individual soil moisture stations in the Ukraine are shown in Figure 1. The data are averaged into the 25

Robock, Alan

106

Forty-five years of observed soil moisture in the Ukraine: No summer desiccation (yet)  

E-Print Network [OSTI]

Forty-five years of observed soil moisture in the Ukraine: No summer desiccation (yet) Alan Robock­October for 141 stations from fields with either winter or spring cereals from the Ukraine for 1958­2002. We-five years of observed soil moisture in the Ukraine: No summer desiccation (yet), Geophys. Res. Lett., 32, L

Robock, Alan

107

Mapping in-field cotton fiber quality and relating it to soil moisture  

E-Print Network [OSTI]

, a portion of the Texas A&M Research farm near College Station, Texas, to explore the spatial variability of cotton fiber quality and quantify its relationship with in-season soil moisture content. Cotton samples and in-situ soil moisture measurements...

Ge, Yufeng

2009-05-15T23:59:59.000Z

108

The effect of monsoonal atmospheric moisture on lightning fire ignitions in southwestern North America  

E-Print Network [OSTI]

atmospheric moisture and precipitation. Using 16 years of lightning flash, relative humidity), on observed lightning fire data. The probability that a lightning flash would ignite an observed fireThe effect of monsoonal atmospheric moisture on lightning fire ignitions in southwestern North

Stephens, Scott L.

109

Moisture and Ventilation Solutions in Hot, Humid Climates: Florida Manufactured Housing- Building America Top Innovation  

Broader source: Energy.gov [DOE]

This Building America Innovations profile describes work by Building America researchers who visited 24 manufactured home factories between 1996 and 2003 to investigate moisture problems while improving energy efficiency and identified insufficient air sealing and poor HVAC installation as the biggest culprits. One manufacturer reported zero moisture-related issues in 35,000 homes built after implementing Building America recommendations.

110

Observational Datasets We use two different satellite soil moisture datasets, one derived from the Advanced Microwave  

E-Print Network [OSTI]

Observational Datasets We use two different satellite soil moisture datasets, one derived from of the datasets. Whilst the AMSRE soil moisture product is gridded at 0.25°, the footprint of the sensor different precipitation datasets which use a combination of satellite data and, in some cases, surface

Guichard, Francoise

111

Optimization of stomatal conductance for maximum carbon gain under dynamic soil moisture  

E-Print Network [OSTI]

Optimization of stomatal conductance for maximum carbon gain under dynamic soil moisture Stefano Accepted 26 September 2013 Available online 9 October 2013 Keywords: Optimization Photosynthesis Soil moisture Stomatal conductance Transpiration a b s t r a c t Optimization theories explain a variety

Katul, Gabriel

112

Analysis of moisture variability in the European Centre for Medium-Range Weather Forecasts 15-year  

E-Print Network [OSTI]

Analysis of moisture variability in the European Centre for Medium-Range Weather Forecasts 15-year Centre for Medium-Range Weather Forecasts 15-year reanalysis (ERA-15) moisture over the tropical oceans. Introduction [2] Because water vapor is the most significant green- house gas and it exhibits a strong

Allan, Richard P.

113

The Use of Radar Methods to Determine Moisture Content in the Vadose Zone  

SciTech Connect (OSTI)

Moisture content is a critical parameter affecting both liquid-phase and vapor-phase contaminant transport in the vadose zone. The objective of our three-year research project is to determine the optimal way to use of radar methods--both surface and borehole--as a noninvasive means of determining in situ moisture content. In our research we focus on two specific aspects of the link between radar images and moisture content. The first question we address is: Can we use a measure of the dielectric constant of a volume of the subsurface to determine the moisture content of that volume? The second question we address is: Can we use the radar data to characterize the spatial variability in moisture content?

Knight, Rosemary

2001-06-01T23:59:59.000Z

114

Effect of bed medium moisture on {alpha}-pinene removal by biofilters  

SciTech Connect (OSTI)

In this study, laboratory scale continuous flow bioifilters were used to determine the effect of bed medium moisture on biofilter performance when treating off-gases containing {alpha}-pinene. Biofilters were packed using a proprietary wood waste bed medium and were operated at a flow rate of 700 ml of air per min, yielding an empty bed residence time of 2 minutes. For the bed medium moisture levels tested, a biofilter bed held at 100% moisture on a dry weight basis demonstrated the best overall {alpha}-pinene removal results. Volumetric productivity and percent removal were higher, while the time to reach maximum removal efficiency was decreased compared to biofilters operated at 40, 60 and 80% bed medium moisture. Results indicate that control of moisture in a biofilter is important for maximum removal of {alpha}-pinene.

Lee, B.D.; Apel, W.A.; Cook, L.L. [Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States); Nichols, K.M. [Weyerhaeuser, Federal Way, WA (United States)

1996-12-31T23:59:59.000Z

115

AIAA 20033498 Viscous Aerodynamic Shape  

E-Print Network [OSTI]

AIAA 2003­3498 Viscous Aerodynamic Shape Optimization of Wings including Planform Variables Kasidit Aerodynamics Conference Orlando, Florida/June 23­26, 2003 For permission to copy or republish, contact­4344 #12;VISCOUS AERODYNAMIC SHAPE OPTIMIZATION OF WINGS INCLUDING PLANFORM VARIABLES Kasidit Leoviriyakit

Jameson, Antony

116

Free form hemispherical shaped charge  

DOE Patents [OSTI]

A hemispherical shaped charge has been modified such that one side of the hemisphere is spherical and the other is aspherical allowing a wall thickness variation in the liner. A further modification is to use an elongated hemispherical shape. The liner has a thick wall at its pole and a thin wall at the equator with a continually decreasing wall thickness from the pole to the equator. The ratio of the wall thickness from the pole to the equator varies depending on liner material and HE shape. Hemispherical shaped charges have previously been limited to spherical shapes with no variations in wall thicknesses. By redesign of the basic liner thicknesses, the jet properties of coherence, stability, and mass distribution have been significantly improved.

Haselman, Jr., Leonard C. (Livermore, CA)

1996-01-01T23:59:59.000Z

117

Free form hemispherical shaped charge  

DOE Patents [OSTI]

A hemispherical shaped charge has been modified such that one side of the hemisphere is spherical and the other is aspherical allowing a wall thickness variation in the liner. A further modification is to use an elongated hemispherical shape. The liner has a thick wall at its pole and a thin wall at the equator with a continually decreasing wall thickness from the pole to the equator. The ratio of the wall thickness from the pole to the equator varies depending on liner material and HE shape. Hemispherical shaped charges have previously been limited to spherical shapes with no variations in wall thicknesses. By redesign of the basic liner thicknesses, the jet properties of coherence, stability, and mass distribution have been significantly improved. 8 figs.

Haselman, L.C. Jr.

1996-06-04T23:59:59.000Z

118

Dynamic Analysis of Moisture Transport Through Walls and Associated Cooling Loads in the Hot/Humid Climate of Florianopolis, Brazil  

E-Print Network [OSTI]

. The simulation results were compared to those obtained by pure conduction heat transfer without moisture effects. Also analyzed were the influence on cooling loads of high moisture content due to rain soaking of materials. and the influence of solar radiation...

Mendes, N.; Winkelmann, F. C.; Lamberts, R.; Philippi, P. C.; Da Cunha, Neto, J. A. B.

1996-01-01T23:59:59.000Z

119

The influence of moisture content and cooking on the screw pressing and prepressing of corn oil from corn germ  

Science Journals Connector (OSTI)

Samples of corn germ were obtained from a commercial corn wet mill (factory dried to about 3% moisture) and a commerical corn dry mill (undried, produced in the mill with about 13% moisture). The germ ... pressin...

Robert A. Moreau; David B. Johnston

2005-01-01T23:59:59.000Z

120

Effects of outside storage on the energy potential of hardwood particulate fuels: part 1. Moisture content and temperature  

SciTech Connect (OSTI)

Widespread use of woody materials for industrial fuels has generated interest and concern about the energy value of fuels stored outdoors. This paper reports on the effect of storage for periods up to 1 year on the temperature and moisture content (MC) of wood particulate fuels in cone-shaped piles according to the type of fuel and height of pile. Three fuels - hardwood whole-tree chips, bark, and sawdust - were stored in piles 10, 15, and 20 feet high. The experimental piles were built during the late summer of 1978 at the Union Camp woodyard in Ford, Virginia. Internal pile temperatures rose rapidly during the first weeks to highs of 45 degrees C for whole-tree chips and 73 degrees C for bark and sawdust. In the bark and chip piles these temperatures fluctuated seasonally. The interior temperature of the sawdust pile was insensitive to ambient temperature changes and declined slowly throughout the remainder of the study. Within the first 60 to 120 days of storage, the surfaces of all piles became saturated with moisture. The interior zones of the bark and sawdust piles remained at or slightly above the original MC while the corresponding regions of the chip pile exhibited some drying. After 1 year's time, the weighted average MCs of chips, bark, and sawdust increased by 84, 108, and 191 percent, respectively, over the original MCs. To minimize increases of MC in stored woody fuels, storage time should be kept to less than 60 days, chips should be preferred to bark and sawdust, and piles should be built as high as possible consistent with available space and storage procedures which limit the potential for spontaneous combustion.

White, M.S.; Curtis, M.L.; Sarles, R.L.; Green, D.W.

1983-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Development of the prototype Munitions Case Moisture Meter, Model ORNL-1  

SciTech Connect (OSTI)

There is a great need for a rapid and simple means of determining the moisture content in combustible cartridge case (ccc) munitions. Previous studies have demonstrated that accumulation of moisture in ccc rounds, such as the M829, leads to softening of the case wall and weakening of the adhesive joint. Moisture in the ccc can lead to incomplete combustion of the case upon firing the round. Currently, there are no facile methods for measuring the moisture content. A prototype portable meter for non-destructive and rapid estimation of moisture in ccc has been developed. The Munitions Case Moisture Meter Model ORNL-1 demonstrates the feasibility of developing an instrument based on the moisture dependence of dielectric properties, to measure moisture in ccc munitions in storage and in the field. These instruments are simple, inexpensive, lightweight, portable, low-power battery operated, and intrinsically safe. They provide nondestructive, noninvasive, and rapid measurements. Calibration data for the prototype are not available at this time. Therefore, calibration of the meter and the development of a scale reading directly moisture content in munitions rounds could not be completed. These data will be supplied by the US Army from its tests of the meter with actual munitions. However, experimental results on empty cccs in laboratory conditions demonstrate satisfactory performance of the instrument. Additional work is needed to bring the prototype to its optimum usefulness and accuracy for field measurements. This includes: Calibration of the meter scale with full-up munitions; Data and evaluation procedures to adjust the performance of the meter for different environmental conditions such as temperature and humidity; and Studies of the dielectric properties of moist ccc materials, as a function of frequency and temperature, are needed for adjustment of the meter for optimal performance.

Agouridis, D.C.; Gayle, T.M.; Griest, W.H.

1993-02-24T23:59:59.000Z

122

Development of the prototype Munitions Case Moisture Meter, Model ORNL-1. Final report  

SciTech Connect (OSTI)

There is a great need for a rapid and simple means of determining the moisture content in combustible cartridge case (ccc) munitions. Previous studies have demonstrated that accumulation of moisture in ccc rounds, such as the M829, leads to softening of the case wall and weakening of the adhesive joint. Moisture in the ccc can lead to incomplete combustion of the case upon firing the round. Currently, there are no facile methods for measuring the moisture content. A prototype portable meter for non-destructive and rapid estimation of moisture in ccc has been developed. The Munitions Case Moisture Meter Model ORNL-1 demonstrates the feasibility of developing an instrument based on the moisture dependence of dielectric properties, to measure moisture in ccc munitions in storage and in the field. These instruments are simple, inexpensive, lightweight, portable, low-power battery operated, and intrinsically safe. They provide nondestructive, noninvasive, and rapid measurements. Calibration data for the prototype are not available at this time. Therefore, calibration of the meter and the development of a scale reading directly moisture content in munitions rounds could not be completed. These data will be supplied by the US Army from its tests of the meter with actual munitions. However, experimental results on empty cccs in laboratory conditions demonstrate satisfactory performance of the instrument. Additional work is needed to bring the prototype to its optimum usefulness and accuracy for field measurements. This includes: Calibration of the meter scale with full-up munitions; Data and evaluation procedures to adjust the performance of the meter for different environmental conditions such as temperature and humidity; and Studies of the dielectric properties of moist ccc materials, as a function of frequency and temperature, are needed for adjustment of the meter for optimal performance.

Agouridis, D.C.; Gayle, T.M.; Griest, W.H.

1993-02-24T23:59:59.000Z

123

Measurement of moisture content in waste saltcake using the freezing process  

SciTech Connect (OSTI)

As part of the remediation effort at the U.S. Department of Energy`s Hanford Reservation, the radioactive waste stored in 177 tanks around the site is being characterized. One important characteristic of this waste is the amount of moisture contained within the saltcake layer found in some of the tanks. At low moisture contents, these saltcake layers will produce hydrogen gas, creating an increase in the flammability hazard. Therefore, a method to measure moisture in the saltcake layers must be developed to ensure the safety of the tanks.

Pagh, R.T.; Klein, A.C. [Oregon State Univ., Corvallis, OR (United States)

1996-12-31T23:59:59.000Z

124

Shape memory polymer foams for endovascular therapies  

DOE Patents [OSTI]

A system for occluding a physical anomaly. One embodiment comprises a shape memory material body wherein the shape memory material body fits within the physical anomaly occluding the physical anomaly. The shape memory material body has a primary shape for occluding the physical anomaly and a secondary shape for being positioned in the physical anomaly.

Wilson, Thomas S. (Castro Valley, CA); Maitland, Duncan J. (Pleasant Hill, CA)

2012-03-13T23:59:59.000Z

125

How Bees Remember Flower Shapes  

Science Journals Connector (OSTI)

...INFLUENCE OF POINTED REGIONS ON SHAPE PREFERENCE OF HONEY BEES, ANIMAL BEHAVIOUR 25 : 88 ( 1977 ). ANDERSON, A.M., INFORMATION PROCESSI 207 ( 1972 ). ANDERSON, A.M., MODEL FOR LANDMARK LEARNING IN HONEYBEE, JOURNAL OF COMPARATIVE PHYSIOLOGY...

JAMES L. GOULD

1985-03-22T23:59:59.000Z

126

The Selective Value of Bacterial Shape  

Science Journals Connector (OSTI)

...examine how each of these fundamental forces influences cell shape. NUTRIENT...eat, and diffusion is the fundamental physical factor that determines...shape, even though these forces are obviously fundamental. Though shape may make only...

Kevin D. Young

2006-09-01T23:59:59.000Z

127

Rapid Determination of Moisture and Fat in Meats By Microwave And Nuclear Magnetic Resonance Analysis  

E-Print Network [OSTI]

Determination of moisture, fat, protein, and other components of meat is important for the evaluation of the quality of raw materials and finished products, the assessment of process control, and for ensuring regulatory compliance of meat products...

Claflin, Amy Elizabeth

2013-08-30T23:59:59.000Z

128

Effects of Material Moisture Adsorption and Desorption on Building Cooling Loads  

E-Print Network [OSTI]

Moisture adsorption and desorption (MAD) by internal building materials and furnishings can be significant in buildings. For many building cooling strategies, MAD may have overriding effects on building cooling loads. For example, natural...

Fairey, P.; Kosar, D.

1988-01-01T23:59:59.000Z

129

SOLID WOOD PRODUCTS I TECHNICAL NOTE CALIBRATION OF MOISTURE METERS FOR  

E-Print Network [OSTI]

are for window sash tions, the samples were removed from widely used in measuring the moisture and doors, water- Limited species correction factors for covered with plastic film when not being relation between MC

130

A Study of Satellite-derived Moisture with Emphasis on the Gulf of Mexico  

Science Journals Connector (OSTI)

Visible-Infrared Spin Scan Radiometer (VISSR) Atmospheric Sounder (VAS) moisture retrievals are compared to the National Meteorological Center Regional Analysis and Forecast System (RAFS) 12-h forecast and to 1200 UTC rawinsondes over the United ...

Anthony J. Schreiner; Christopher M. Hayden; Cecil A. Paris

1992-07-01T23:59:59.000Z

131

A study of interchannel separation of moisture in nozzle cascades of turbines  

Science Journals Connector (OSTI)

Results obtained from an experimental study on analyzing the separation characteristics of moisture removing slits during interchannel separation are presented. Not only the flowrate of the liquid phase throug...

V. G. Gribin; B. A. Korshunov; A. A. Tishchenko

2010-09-01T23:59:59.000Z

132

Modeling land surface processes of the midwestern United States : predicting soil moisture under a warmer climate  

E-Print Network [OSTI]

This dissertation seeks to quantify the response of soil moisture to climate change in the midwestern United States. To assess this response, a dynamic global vegetation model, Integrated Biosphere Simulator, was coupled ...

Winter, Jonathan (Jonathan Mark)

2010-01-01T23:59:59.000Z

133

A Continuum Coupled Moisture-mechanical Constitutive Model for Asphalt Concrete  

E-Print Network [OSTI]

constitutive relationships are implemented in the Pavement Analysis using Nonlinear Damage Approach (PANDA) finite element (FE) package to model the moisture damage effect on the complex environmental-mechanical response of asphalt concrete. The developed...

Shakiba, Maryam

2013-12-09T23:59:59.000Z

134

Influence of fundamental material properties and air void structure on moisture damage of asphalt mixes  

E-Print Network [OSTI]

to the properties of the materials and the microstructure distribution, while the external factors include the environmental conditions, production and construction practices, pavement design, and traffic level. The majority of the research on moisture damage...

Arambula Mercado, Edith

2009-05-15T23:59:59.000Z

135

February 1992 R. H. Johnson 353 Heat and Moisture Sources and Sinks of Asian Monsoon  

E-Print Network [OSTI]

February 1992 R. H. Johnson 353 Heat and Moisture Sources and Sinks of Asian Monsoon Precipitating Systems By Richard H. Johnson Department of Atmospheric Science, Colorado State University, Fort Collins

Johnson, Richard H.

136

Indian and Pacific Ocean Influences on Southeast Australian Drought and Soil Moisture  

Science Journals Connector (OSTI)

The relative influences of Indian and Pacific Ocean modes of variability on Australian rainfall and soil moisture are investigated for seasonal, interannual, and decadal time scales. For the period 19002006, observations, reanalysis products, and ...

Caroline C. Ummenhofer; Alexander Sen Gupta; Peter R. Briggs; Matthew H. England; Peter C. McIntosh; Gary A. Meyers; Michael J. Pook; Michael R. Raupach; James S. Risbey

2011-03-01T23:59:59.000Z

137

Measurement of moisture and total reducing sugars using Near Infrared Spectroscopy  

E-Print Network [OSTI]

industrial applications. In this project, the accuracy and feasibility of measuring moisture and total reducing sugar content in a vegetable medium using a Near Infrared Spectroscopy technique was investigated as an alternative to slow and tedious classical...

Mehrubeoglu, Mehrube

2012-06-07T23:59:59.000Z

138

Moisture Asymmetry and MJO Eastward Propagation in an Aquaplanet General Circulation Model  

Science Journals Connector (OSTI)

The role of zonal moisture asymmetry in the eastward propagation of the MaddenJulian oscillation (MJO) is investigated through a set of aquaplanet atmospheric general circulation model (AGCM) experiments with a zonally symmetric sea surface ...

Pang-Chi Hsu; Tim Li; Hiroyuki Murakami

2014-12-01T23:59:59.000Z

139

Enhancing Model Skill by Assimilating SMOPS Blended Soil Moisture Product into Noah Land Surface Model  

Science Journals Connector (OSTI)

Many studies that have assimilated remotely sensed soil moisture into land surface models have generally focused on retrievals from a single satellite sensor. However, few studies have evaluated the merits of assimilating ensemble product that are ...

Jifu Yin; Xiwu Zhan; Youfei Zheng; Jicheng Liu; Li Fang; Christopher R. Hain

140

Effects of Soil Moisture on the Responses of Soil Temperatures to Climate Change in Cold Regions  

Science Journals Connector (OSTI)

At high latitudes, changes in soil moisture could alter soil temperatures independently of air temperature changes by interacting with the snow thermal rectifier. The authors investigated this mechanism with model experiments in the Community Land ...

Zachary M. Subin; Charles D. Koven; William J. Riley; Margaret S. Torn; David M. Lawrence; Sean C. Swenson

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

MODEL 9975 SHIPPING PACKAGE: IMPACT OF CAPLUG REMOVAL ON FIBERBOARD MOISTURE LEVEL  

SciTech Connect (OSTI)

Two 9975 shipping packages were removed from KAC and provided to SRNL for test purposes, after both packages were found to exceed the 1 inch maximum criterion for the axial gap at the top of the package. Package 9975-01818 was found with an axial gap of 1.437 inch, and an estimated 2.5 liters of excess moisture in the lower fiberboard layers. Package 9975-02287 was found with an axial gap of 1.008 inch, and only slightly elevated moisture levels relative to typical packages. Prior data from the 9975 Surveillance Program has shown that the 9975 drum provides a degree of isolation, and will tend to preserve fiberboard moisture levels for an extended period of time. Both packages were provided to SRNL to identify whether removal of the 4 caplugs in each package would allow moisture to escape the package. Following testing with the caplugs removed for approximately 1 year, this report documents the findings from this effort. Two 9975 shipping packages removed from service in K-Area Complex (KAC) due to an excessive axial gap have been tested in SRNL to determine if caplug removal would facilitate the reduction of excess fiberboard moisture. An additional question to be answered through this testing was whether the resulting moisture loss would reduce the axial gap, reversing the effect seen during storage with excess moisture present. These packages have completed approximately 1 year in test, during which time the weight of each package has steadily decreased as a result of moisture migration out of the package. However, elevated moisture levels still remain in the packages. During this test period, the bottom fiberboard layers of package 9975-01818 (which contained the greater amount of excess moisture) experienced further compaction, and the axial gap of both packages has increased. This effort has shown that removal of the caplugs may not be a sufficient measure to rehabilitate packages with excess moisture or excess axial gaps in a timely manner. However, this measure might make a meaningful contribution in combination with other actions (to be determined). It is recommended that the caplug removal tests in SRNL be discontinued at this time.

Daugherty, W.

2011-06-23T23:59:59.000Z

142

Experimental Study of Multi-type Macromolecule Porosity Moisture-Conditioned Material  

E-Print Network [OSTI]

from figure that humidity relocation process of the porous moisture conditioned materials similar to the principles of humidity absorbing and releasing performance, when outside water vapour pressure less than sub-surface water vapour hours... material pressure, the release of material outward water, and bring a humidity removal because of capillarity in porous layer, porous layer absorb moisture from the wet floor, evaporation continuing (Fig2a). When outside water vapour pressure greater...

Huang, X.; Fan, Y.; Di, Y.

2006-01-01T23:59:59.000Z

143

Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Maximize Comfort: Temperature, Humidity and IAQ Vol.I-6-3 Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems Qin Wang, Xiaoping Miao, Baoyi Cheng, Liangkai Fan EIEC, PLA...]. Youming Chen, Shengwei Wang, Ling Zhang. Application of System Identification of Hygrothermal Process in Buildings [M]. Construction and Industry Publishing Company in China, Beijing, 2004. [7]. J.R. Philip, D.A. de Vries. Moisture Movement in Porous...

Wang, Q.; Miao, X.; Cheng, B.; Fan, L.

2006-01-01T23:59:59.000Z

144

Spatial Variation of Soil Type and Soil Moisture in the Regional Atmospheric Modeling System  

SciTech Connect (OSTI)

Soil characteristics (texture and moisture) are typically assumed to be initially constant when performing simulations with the Regional Atmospheric Modeling System (RAMS). Soil texture is spatially homogeneous and time-independent, while soil moisture is often spatially homogeneous initially, but time-dependent. This report discusses the conversion of a global data set of Food and Agriculture Organization (FAO) soil types to RAMS soil texture and the subsequent modifications required in RAMS to ingest this information. Spatial variations in initial soil moisture obtained from the National Center for Environmental Predictions (NCEP) large-scale models are also introduced. Comparisons involving simulations over the southeastern United States for two different time periods, one during warmer, more humid summer conditions, and one during cooler, dryer winter conditions, reveals differences in surface conditions related to increases or decreases in near-surface atmospheric moisture con tent as a result of different soil properties. Three separate simulation types were considered. The base case assumed spatially homogeneous soil texture and initial soil moisture. The second case assumed variable soil texture and constant initial soil moisture, while the third case allowed for both variable soil texture and initial soil moisture. The simulation domain was further divided into four geographically distinct regions. It is concluded there is a more dramatic impact on thermodynamic variables (surface temperature and dewpoint) than on surface winds, and a more pronounced variability in results during the summer period. While no obvious trends in surface winds or dewpoint temperature were found relative to observations covering all regions and times, improvement in surface temperatures in most regions and time periods was generally seen with the incorporation of variable soil texture and initial soil moisture.

Buckley, R.

2001-06-27T23:59:59.000Z

145

A study of the troxler nuclear soil density and moisture gauges  

E-Print Network [OSTI]

A STUDY OF THE TROXLER NUCLEAR SOIL DENSITY AND MOISTURE GAUGES A Thesis By Robert Lane Friedenwald Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 1963 Major Subject: Civil Engineering A STUDY OF THE TROXLER NUCLEAR SOIL DENSITY AND MOISTURE GAUGES A Thesis By Robert Lane Friedenwald Approved as to style and content by: (Chairma of Committee) (Hea of Department) May...

Friedenwald, Robert Lane

2012-06-07T23:59:59.000Z

146

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

E-Print Network [OSTI]

occurs. Higher-resolution runs are generally associated with a higher information content. This may provide a methodology for monitoring land atmosphere feedbacks via remotely sensed soil moisture and vegetation fields through statistical knowledge... involve positive feedbacks, evidence also supports the existence of negative soil moistureprecipitation feedbacks. Negative feedbacks are associated with an increase in sensible heat flux over dry soils, which can lead to an increase in turbulent mixing...

Jones, Aubrey R.; Brunsell, Nathaniel A.

2009-01-14T23:59:59.000Z

147

Substrate Moisture Content Effects on Growth and Shelf Life of Angelonia angustifolia  

E-Print Network [OSTI]

plants to non-lethal dry down cycles throughout production, has been shown to improve moisture stress tolerance during production through reductions in transpirational water loss (Eakes et al., 1991). Imposing MSC until visible wilt during production... the growing medium was greater in MSC plants compared to the control plants (Eakes et al., 1991). Overall, MSC plants were able to acclimate to the lower moisture levels by stomatal changes and better regulation of transpiration compared to control plants...

Bingham, Alison

2012-07-16T23:59:59.000Z

148

Tree performance and soil moisture relationships on reclaimed mine sites utilizing three topsoiling regimes  

E-Print Network [OSTI]

TREE PERFORMANCE AND SOIL MOISTURE RELATIONSHIPS ON RECLAIMED MINE SITES UTILIZING THREE TOPSOILING REGIMES A Thesis by NESLIHAN MUTIA BILIR Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1987 Major Subject: Forestry TREE PERFORMANCE AND SOIL MOISTURE RELATIONSHIPS ON RECLAIMED MINE SITES UTILIZING THREE TOPSOILING REGIMES A Thesis by NESLIHAN MUTIA BILIR Approved as to style and content by...

Bilir, Neslihan Mutia

1987-01-01T23:59:59.000Z

149

Africa Infrastructure Country Diagnostic Documents: ARCGIS Shape...  

Open Energy Info (EERE)

Shape File, all Countries Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Africa Infrastructure Country Diagnostic Documents: ARCGIS Shape File, all Countries Agency...

150

Non-gaussian shape recognition  

SciTech Connect (OSTI)

A detection of primordial non-Gaussianity could transform our understanding of the fundamental theory of inflation. The precision promised by upcoming cosmic microwave background (CMB) and large-scale structure (LSS) surveys raises a natural question: if a detection given a particular template is made, what does this truly tell us about the underlying theory? Even in the case of non-detections and upper bounds on deviations from Gaussianity, what can we then infer about the viable theories that remain? In this paper we present a systematic way to constrain a wide range of non-Gaussian shapes, including general single and multi-field models and models with excited initial states. We present a separable, divergent basis able to recreate many shapes in the literature to high accuracy with between three and seven basis functions. The basis allows shapes to be grouped into broad ''template classes'', satisfying theoretically-relevant priors on their divergence properties in the squeezed limit. We forecast how well a Planck-like CMB survey could not only detect a general non-Gaussian signal but discern more about its shape, using existing templates and new ones we propose. This approach offers an opportunity to tie together minimal theoretical priors with observational constraints on the shape in general, and in the squeezed limit, to gain a deeper insight into what drove inflation.

Byun, Joyce; Bean, Rachel, E-mail: byun@astro.cornell.edu, E-mail: rbean@astro.cornell.edu [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States)

2013-09-01T23:59:59.000Z

151

Wilson loop and contour shapes  

Science Journals Connector (OSTI)

By computing the Wilson loop expectation value W[C] in the two-dimensional Schwinger model on R1S1, we show that nonleading terms depend on the shape of the contours both on R1R1 and R1S1. We also find that the rhombic contour and triangular contour lead to the same static potentials both on R1R1 and R1S1. The binding energy is also affected by the choice of contour shapes on the R1S1 model. This indicates that the model on R1S1 deserves more study.

W. F. Kao

1990-12-15T23:59:59.000Z

152

Shape memory polymer actuator and catheter  

DOE Patents [OSTI]

An actuator system is provided for acting upon a material in a vessel. The system includes an optical fiber and a shape memory polymer material operatively connected to the optical fiber. The shape memory polymer material is adapted to move from a first shape for moving through said vessel to a second shape where it can act upon said material.

Maitland, Duncan J. (Pleasant Hill, CA); Lee, Abraham P. (Walnut Creek, CA); Schumann, Daniel L. (Concord, CA); Matthews, Dennis L. (Moss Beach, CA); Decker, Derek E. (Byron, CA); Jungreis, Charles A. (Pittsburgh, PA)

2007-11-06T23:59:59.000Z

153

Sarang Joshi 10/10/2001 #1 Statistics of Shape:Statistics of Shape: EigenEigen ShapesShapes  

E-Print Network [OSTI]

HippocampalHippocampal MappingMapping Atlas Patients #12;Sarang Joshi 2/16/2003 #5 HippocampalHippocampal MappingMapping Atlas Subjects #12;' & $ %Sarang Joshi May 3, 2000 16 Shape of 2-D Sub Mg be a Gaussian random vector eld with mean mU 2 H and covariance KU of nite trace. There exists

North Carolina at Chapel Hill, University of

154

Using Whole-House Field Tests to Empirically Derive Moisture Buffering Model Inputs  

SciTech Connect (OSTI)

Building energy simulations can be used to predict a building's interior conditions, along with the energy use associated with keeping these conditions comfortable. These models simulate the loads on the building (e.g., internal gains, envelope heat transfer), determine the operation of the space conditioning equipment, and then calculate the building's temperature and humidity throughout the year. The indoor temperature and humidity are affected not only by the loads and the space conditioning equipment, but also by the capacitance of the building materials, which buffer changes in temperature and humidity. This research developed an empirical method to extract whole-house model inputs for use with a more accurate moisture capacitance model (the effective moisture penetration depth model). The experimental approach was to subject the materials in the house to a square-wave relative humidity profile, measure all of the moisture transfer terms (e.g., infiltration, air conditioner condensate) and calculate the only unmeasured term: the moisture absorption into the materials. After validating the method with laboratory measurements, we performed the tests in a field house. A least-squares fit of an analytical solution to the measured moisture absorption curves was used to determine the three independent model parameters representing the moisture buffering potential of this house and its furnishings. Follow on tests with realistic latent and sensible loads showed good agreement with the derived parameters, especially compared to the commonly-used effective capacitance approach. These results show that the EMPD model, once the inputs are known, is an accurate moisture buffering model.

Woods, J.; Winkler, J.; Christensen, D.; Hancock, E.

2014-08-01T23:59:59.000Z

155

FINAL REPORT FOR MOISTURE EFFECTS ON COMPACTION OF FIBERBOARD IN A 9975 SHIPPING PACKAGE  

SciTech Connect (OSTI)

Compaction of lower layers in the fiberboard assembly has been observed in 9975 packages that contain elevated moisture. Lab testing has resulted in a better understanding of the relationship between the fiberboard moisture level and compaction of the lower fiberboard assembly, and the behavior of the fiberboard during transport. In laboratory tests of cane fiberboard, higher moisture content has been shown to correspond to higher total compaction, greater rate of compaction, and continued compaction over a longer period of time. In addition, laboratory tests have shown that the application of a dynamic load results in higher fiberboard compaction compared to a static load. The test conditions and sample geometric/loading configurations were chosen to simulate the regulatory requirements for 9975 package input dynamic loading. Dynamic testing was conducted to acquire immediate and cumulative changes in geometric data for various moisture levels. Two sample sets have undergone a complete dynamic test regimen, one set for 27 weeks, and the second set for 47 weeks. The dynamic input, data acquisition, test effects on sample dynamic parameters, and results from this test program are summarized and compared to regulatory specifications for dynamic loading. Compaction of the bottom fiberboard layers due to the accumulation of moisture is one possible cause of an increase in the axial gap at the top of the package. The net compaction of the bottom layers will directly add to the axial gap. The moisture which caused this compaction migrated from the middle region of the fiberboard assembly (which is typically the hottest). This will cause the middle region to shrink axially, which will also contribute directly to the axial gap. Measurement of the axial gap provides a screening tool for identifying significant change in the fiberboard condition. The data in this report provide a basis to evaluate the impact of moisture and fiberboard compaction on 9975 package performance during storage at the Savannah River Site (SRS).

Stefek, T.; Daugherty, W.; Estochen, E.

2013-09-17T23:59:59.000Z

156

Building America Top Innovations Hall of Fame Profile … Moisture and Ventilation Solutions in Hot, Humid Climates: Florida Manufactured Housing  

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

Duct leakage was a key factor in moisture Duct leakage was a key factor in moisture damage in manufactured homes in humid climates. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 2. House-as-a-System Solutions 2.1 New Homes with Whole-House Packages Moisture and Ventilation Solutions in Hot, Humid Climates: Florida Manufactured Housing Research by Building America diagnosed the causes and prescribed a cure that dramatically reduced moisture problems in manufactured housing in Florida. In the late 1990s, Building America researchers at the Florida Solar Energy Center (FSEC) worked with manufactured home builders to diagnose moisture problems in homes in Florida. Moisture issues were so severe that in some homes researchers could push their fingers through the saturated drywall. Using a

157

STATUS REPORT FOR MOISTURE EFFECTS ON COMPACTION OF FIBERBOARD IN A 9975 SHIPPING PACKAGE  

SciTech Connect (OSTI)

Compaction of lower layers in the fiberboard overpack has been observed in 9975 packages that contain elevated moisture. Lab testing has resulted in a better understanding of the relationship between the fiberboard moisture level and compaction of the lower fiberboard assembly, and the behavior of the fiberboard during transport. In laboratory tests, higher moisture content has been shown to correspond to higher total compaction of fiberboard material, greater rate of compaction, and continued compaction over a longer period of time. In addition, laboratory tests have shown that the application of a dynamic load results in higher fiberboard compaction. The test conditions and sample geometric/loading configurations were chosen to simulate the regulatory requirements for 9975 package input dynamic loading. Dynamic testing was conducted over a period of six months to acquire immediate and cumulative changes in geometric data for various moisture levels. Currently, one sample set has undergone a complete dynamic test regimen, while testing of another set is still in-progress. The dynamic input, data acquisition, test effects on sample dynamic parameters, and interim results from this test program are summarized and compared to regulatory specifications for dynamic loading. This will provide a basis from which to evaluate the impact of moisture and fiberboard compaction on the safety basis for transportation (Safety Analysis Report for Packaging) and storage (facility Documented Safety Analysis) at the Savannah River Site (SRS).

Stefek, T.; Daugherty, W.; Estochen, E.

2011-06-23T23:59:59.000Z

158

Surface Energy,Surface Energy, Surface Tension & Shape of CrystalsSurface Tension & Shape of Crystals  

E-Print Network [OSTI]

Surface Energy,Surface Energy, Surface Tension & Shape of CrystalsSurface Tension & Shape of shapes of crystals are important: (i) growth shape and (ii) equilibrium shape Surface/interface energy surfaces. The joining of two phases creates an interface. (Two orientations of the same crystalline phase

Subramaniam, Anandh

159

What kind of city have we shaped? How is our city shaping us?  

E-Print Network [OSTI]

What kind of city have we shaped? How is our city shaping us? How do we envision a healthy vehicle in Oklahoma is $8,776 per year. #12;How is our city shaping us? Low-density, segregated use kind of city have we shaped? How is our city shaping us? How do we envision a healthy community? #12

Oklahoma, University of

160

Optimal shape design for divertors  

Science Journals Connector (OSTI)

Owing to the complex physics of the plasma edge, numerical simulation tools are indispensable for the evaluation of novel divertor concepts. Simulation-based divertor design is computationally extremely expensive, however, not in the least due to the large number of design variables. In this work, we show how shape optimisation methods can prove very valuable in partially automating the design process. We apply the continuous adjoint method to design divertor targets for maximum power load spreading. Shape sensitivities are derived using the material derivative approach. The resulting sensitivities depend on boundary data only, and can be computed very efficiently. Through numerical tests, we also prove that their accuracy is good. Next, the performance of two gradient-based optimisation algorithms and a so-called one-shot method is compared. Using the latter method, optimal solutions are obtained in a computational effort less than five times the time needed for a single analysis simulation.

Wouter Dekeyser; Detlev Reiter; Martine Baelmans

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

ANALYSIS OF THE AXIAL GAP VS FIBERBOARD MOISTURE CONTENT IN A 9975 SHIPPING PACKAGE  

SciTech Connect (OSTI)

The fiberboard assembly within a 9975 shipping package contains a modest amount of moisture, which can migrate to the cooler regions of the package when an internal heat load is present. Typically, this leads to increased moisture levels in the bottom fiberboard layers, along with elevated chloride levels which can leach from the fiberboard. Concerns have been raised that this condition could lead to corrosion of the stainless steel drum. It has been postulated that checking the axial gap at the top of the package against the current 1 inch maximum criterion provides a sufficient indication regarding the integrity of the fiberboard and drum. This report estimates the increase in axial gap that might be expected for a given moisture increase in the bottom fiberboard layers, and the likelihood that the increase will create a nonconforming condition that will lead to identification of the moisture increase. Using data relating the fiberboard moisture content with the degree of compaction under load, the present analysis indicates that the axial gap will increase by 0.282 inch as the bottom fiberboard layers approach the saturation point. This increase will cause approximately 58% of packages with otherwise nominal package component dimensions to fail the axial gap criterion, based on a survey of axial gap values recorded in K-Area surveillance activities. As the moisture content increases above saturation, the predicted increase in axial gap jumps to 0.405 inch, which would result in 92% or more of all packages failing the axial gap criterion. The data and analysis described in this report are specific to cane fiberboard. While it is expected that softwood fiberboard will behave similarly, such behavior has not yet been demonstrated.

Daugherty, W.

2013-09-30T23:59:59.000Z

162

A climatology of tropical moisture bursts in the eastern North Pacific Ocean  

E-Print Network [OSTI]

iva&er i apor in the laver 600-300 mb (Morel, e& al. , 1979) and or&ented along ihe burst axis. Colocaied cloud-track v;inds shov; tliai i, he vapor band, and thus the moisture burst. occurs in association vvith a trough in the upper... AfcM University (TAMI'). Coverage of the eastern Pacific was available mostly at, 6-hour teniporal resolution. The moisture burst definition ivas developed from examinations of UIR still imagery of he wintei months of 1981-82 and 1928-79. A special...

Smith, Neil Ray

1986-01-01T23:59:59.000Z

163

The effects of grain moisture content and grain temperature on the penetration of hydrogen cyanide  

E-Print Network [OSTI]

as the post fumigation time increased (fig. 12). The greatest rate of 24 Figure 7z Penetration of HCN in interstitial air at concentrations of 5G ppm as effected by moisture and temperature at 4 hours. 17 15 65o Rpo 95' 13 lyon j-57 Figure 8... of the requirements for the degree of MASTER OF SCIENCE (Mionth) 1262 (Year) Mayor Subject ghtdlggllQJLK THE EFFECTS OF GRAIN MOISTURE CONTENT JBD GRAIN TEMPERATURE ON THE PENETRATION OF HYDROGEN CYANIDE A Thesis SIDNEY EDNUND KUNZ Approved as to style...

Kunz, Sidney E

2012-06-07T23:59:59.000Z

164

Study of the moisture-fertility requirements of cotton in the Brazos River Valley, 1957  

E-Print Network [OSTI]

TREATMENT WITHIN EACH MOISTURE PLOT Scale: I = 25 Figure 2 ths goal of finding the specific fertil1ty treatment which would give the best results. Planting Deltapine TPSA Regular cotton, a locally adapted variety, was planted on Apr11 ll. The cotton... of the irrigation water supply. Fourth, It was felt that the use of the pre-planting irrigatIon to Insure adequate soll moisture during the early growing season would provide a better opportunity to compare reactions to the various fertility treatments. A total...

Keese, Carroll Wayne

2012-06-07T23:59:59.000Z

165

Effectiveness of vertical moisture barriers in highway pavements on expansive soils  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . The Variability of TMI. Relationship between Mean Annual Moisture Depth and TMI. Relationship between Mean pF and TMI at a Site. . . Amplitude of Moisture Depth, Calculation Procedure. SURFACE SUCTION VARIATION WITH TIME. . . Surface Suction Variation... from US 84 in Snyder 3. . Test Results for the Soils from IH 44 in Wichita Falls 1. . Test Results for the Soils from IH 44 in Wichita Falls 2. . 44 45 47 48 12. SCI Values for a Soil with 100/ Clay Content. . . Estimated SCI Values from Mc...

Jayatilaka, Ranasinghege

1993-01-01T23:59:59.000Z

166

Optimal shaping properties of the truncated polydisc  

Science Journals Connector (OSTI)

Multidimensional constellation shaping with a family of regions called truncated polydiscs is studied. This family achieves maximum shaping gain for a given two-dimensional peak-to-average energy ratio or a given two-dimensional constellation expansion ...

F. R. Kschischang; S. Pasupathy

1994-05-01T23:59:59.000Z

167

Design of Ferromagnetic Shape Memory Alloy Composites  

E-Print Network [OSTI]

, superelasticity, bending plate, coil spring. INTRODUCTION RECENTLY, FERROMAGNETIC SHAPE memory alloys (FSMAs torque actuator (bending of FSMA composite plate) and spring actuator (torsion of helical FSMA composite spring). KEY WORDS: shape memory alloy, ferromagnetic material, stress-induced martensite transformation

Taya, Minoru

168

Shaping metal nanocrystals through epitaxial seeded growth  

E-Print Network [OSTI]

conditions by using nitrogen dioxide. Surf. Sci. 232,well-defined shapes. Nitrogen dioxide is known to dissociate

Habas, Susan E.; Lee, Hyunjoo; Radmilovic, Velimir; Somorjai, Gabor A.; Yang, Peidong

2008-01-01T23:59:59.000Z

169

Energy consumption during impact cutting of canola stalk as a function of moisture content and cutting height  

Science Journals Connector (OSTI)

Abstract This study surveys the needed energy for cutting canola stems in different levels of cutting height and moisture content. The canola was harvested from the experimental farm in Gorgan, Iran. Test device fabricated and then calibrated. The device works on the principle of conservation of energy. The tests were repeated 15 times for any level of moisture content and cutting height and they were analyzed using split plot design. The results showed the effect of height and moisture content on cutting energy is significant (Penergy was 1.1kJ in 25.5 (w.b.%) moisture content and 10cm cutting height. Also the minimum cutting energy was 0.76kJ in 11.6 (w.b.%) moisture content and 30cm cutting height. Blade velocity was 2.64m/s in cutting moment.

Mohsen Azadbakht; Ebrahim Esmaeilzadeh; Mostafa Esmaeili-Shayan

2013-01-01T23:59:59.000Z

170

A soil moisture assimilation scheme using satellite-retrieved skin temperature in meso-scale weather forecast model  

Science Journals Connector (OSTI)

A thermodynamically consistent soil moisture assimilation scheme for clear sky and snow free conditions has been developed for the meso-scale modeling system in the Arctic region by using satellite-derived skin temperatures. Parallel control and sensitivity modeling experiments were designed and their results demonstrated that the assimilation scheme successfully improves the soil moistures that were deliberately perturbed initially, indicating capability of the scheme to correct bias in the soil moisture initialization. Moreover, the resultant benefit of this assimilation scheme does not only lie in the improvement of soil moisture; the skin temperature also consequently exhibits improvements in a thermodynamic consistency. A real application of the assimilation scheme with satellite-retrieved skin temperature exhibited noticeable positive impacts on the modeling simulation and weather forecast; the model obviously captured meso-scale features of soil moistures as well as the skin temperatures. The warming tendency bias in original model simulations was removed to a considerable extent by this assimilation scheme.

Jing Zhang; Xiangdong Zhang

2010-01-01T23:59:59.000Z

171

On the physics of moisture-induced cracking in metal-glass ,,copper-silica... interfaces  

E-Print Network [OSTI]

September 2007 Environmentally dependent subcritical crack growth, or stress-corrosion cracking, along on the moisture content in gaseous environments. Water and several organic liquids, namely n-butanol, methanol, additionally, subcritical crack growth17 and cyclically induced fracture18 at or near these interfaces when

Ritchie, Robert

172

Supplemental Material for Forty Five Years of Observed Soil Moisture in the Ukraine: No  

E-Print Network [OSTI]

Supplemental Material for Forty Five Years of Observed Soil Moisture in the Ukraine: No Summer, Kiev, Ukraine 5 Agrometeorology Department, Ukrainian Hydrometeorological Centre, Kiev, Ukraine ­ barley and maize) and 71 (for winter wheat) Ukraine stations. The total seeded areas are from 2002

Robock, Alan

173

Forty Five Years of Observed Soil Moisture in the Ukraine: No Summer Desiccation (Yet)  

E-Print Network [OSTI]

Forty Five Years of Observed Soil Moisture in the Ukraine: No Summer Desiccation (Yet) Alan Robock of Maryland, College Park 4 Ukrainian Research Institute for Environment and Resources, Kiev, Ukraine 5 Agrometeorology Department, Ukrainian Hydrometeorological Centre, Kiev, Ukraine Submitted to Geophysical Research

Robock, Alan

174

Model Based Experimental Determination of Moisture Content in Oil-Paper Insulation System Using FDS Technique  

Science Journals Connector (OSTI)

Power Transformers are significant links between HVAC/HVDC transmission systems for changing the life of such aged transformers. Sometimes failure of power transformers may lead to failure of entire power grid. At present, there is large number of transformers ... Keywords: Power transformers, Oil-Paper insulation, Polarization Depolarization Current, frequency domain spectroscopy, moisture content

Yogesh Yashwant Pundlik, Pradeep M. Nirgude

2014-04-01T23:59:59.000Z

175

Soil Moisture Droughts under the Retrospective and Projected Climate in India  

Science Journals Connector (OSTI)

Changes in precipitation, air temperature, and model-simulated soil moisture were examined for the observed (19502008) and projected (201099) climate for the sowing period of Kharif and Rabi [KHARIF_SOW (MayJuly) and RABI_SOW (OctoberDecember)]...

Vimal Mishra; Reepal Shah; Bridget Thrasher

2014-12-01T23:59:59.000Z

176

THE MOISTURE FROM THE AIR AS WATER RESOURCE IN ARID REGION: HOPES, DOUBTS AND FACTS  

E-Print Network [OSTI]

The recovery of clean water from dew has remained a fascinating problem * *in the arid regions, condensation, water collection, arid region. Introduction The demand for fresh water is currently only 7% of the total co* *ndensation. The renewable source of fresh water - the moisture of atmosphere

Trakhtman, Avraham

177

AN APPROACH TO IMPROVEMENT TEMPERATURE AND MOISTURE RETRIEVALS FROM THE GOES SOUNDER MEASUREMENTS  

E-Print Network [OSTI]

are calculated from radiosonde observations of the atmospheric state, generating an ensemble of computed GOES together against radiances from CO2, water vapor, and window bands. This method is often used to generate on the changes in the atmospheric state using a physically-based retrieval of temperature and moisture profiles

Li, Jun

178

The Usage of Screen-Level Parameters and Microwave Brightness Temperature for Soil Moisture Analysis  

Science Journals Connector (OSTI)

This study focuses on testing two different soil moisture analysis systems based on screen-level parameters (2-m temperature T2m, 2-m relative humidity RH2m) and 1.4-GHz passive microwave brightness temperatures TB. First, a simplified extended ...

G. Seuffert; H. Wilker; P. Viterbo; M. Drusch; J-F. Mahfouf

2004-06-01T23:59:59.000Z

179

Prediction of shear strength and vertical movement due to moisture diffusion through expansive soils  

E-Print Network [OSTI]

........................................................................................... 1 1.2 Objectives of Research .................................................................. 5 1.3 Scope of Dissertation..................................................................... 6 II BACKGROUND................................................................................ 28 2.4 Shear Strength Prediction .............................................................. 30 2.5 Unsaturated Moisture Flow Analysis ............................................ 37 2.6 Prediction of Volume Change Behavior...

Long, Xiaoyan

2006-10-30T23:59:59.000Z

180

Uncertainties in Estimating Moisture Fluxes over the Intra-Americas Sea ALBERTO M. MESTAS-NUEZ  

E-Print Network [OSTI]

by these uncertainties. Therefore, NCEP­ NCAR reanalysis, with its global coverage and long-term record, can be used-third of all the summer moisture that enters the continental United States is transported by the GPLLJ (Helfand United States. Future re- search aimed at understanding summer precipitation must therefore deal

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Original article A mathematical model to describe the change in moisture  

E-Print Network [OSTI]

for 200­300 s. During hydrothermal treatment of starchy foods, some physical and chemical processes take starch during hydrothermal treatment Ikbal Zarguili,1 Zoulikha Maache-Rezzoug,1 * Catherine Loisel2 on gravimetric data. The model proposes an exponential variation in the moisture content with processing time

Boyer, Edmond

182

Importance of moisture transport, snow cover and soil freezing to ground temperature predictions  

E-Print Network [OSTI]

foundation may also be explicitly calculated. For buildings utilizing ground source heat pump systems of the annual outdoor and indoor air temperatures. Then periodic heat transfer coefficients and phase lags with significant earth contact. A numerical model for heat and moisture transfer in partially frozen soils has been

183

Diagnostic analysis of atmospheric moisture and clear-sky radiative feedback in the Hadley  

E-Print Network [OSTI]

Diagnostic analysis of atmospheric moisture and clear-sky radiative feedback in the Hadley Centre and Geophysical Fluid Dynamics Laboratory (GFDL) climate models Richard P. Allan Hadley Centre, Met Office Jersey, USA A. Slingo1 Hadley Centre, Met Office, Bracknell, UK Received 23 July 2001; revised 20

Allan, Richard P.

184

Modeling studies of gas movement and moisture migration at Yucca Mountain, Nevada  

SciTech Connect (OSTI)

Modeling studies on moisture redistribution processes that are mediated by gas phase flow and diffusion have been carried out. The problem addressed is the effect of a lowered humidity of the soil gas at the land surface on moisture removal from Yucca Mountain, the potential site for a high-level nuclear waste repository. At the land surface, humid formation gas contacts much drier atmospheric air. Near this contact, the humidity of the soil gas may be considerably lower than at greater depth, where the authors expect equilibrium with the liquid phase and close to 100% humidity. The lower relative humidity of the soil gas may be modeled by imposing, at the land surface, an additional negative capillary suction corresponding to vapor pressure lowering according to Kelvin`s Equation, thus providing a driving force for the upward movement of moisture in both the vapor and liquid phases. Sensitivity studies show that moisture removal from Yucca Mountain arising from the lowered-relative-humidity boundary condition is controlled by vapor diffusion. There is much experimental evidence in the soil literature that diffusion of vapor is enhanced due to pore-level phase change effects by a few orders of magnitude. Modeling results presented here will account for this enhancement in vapor diffusion.

Tsang, Y.W.; Pruess, K. [Lawrence Berkeley Lab., CA (United States)

1991-06-01T23:59:59.000Z

185

New likelihoods for shape analysis  

E-Print Network [OSTI]

We introduce a new kind of likelihood function based on the sequence of moments of the data distribution. Both binned and unbinned data samples are discussed, and the multivariate case is also derived. Building on this approach we lay out the formalism of shape analysis for signal searches. In addition to moment-based likelihoods, standard likelihoods and approximate statistical tests are provided. Enough material is included to make the paper self-contained from the perspective of shape analysis. We argue that the moment-based likelihoods can advantageously replace unbinned standard likelihoods for the search of non-local signals, by avoiding the step of fitting Monte-Carlo generated distributions. This benefit increases with the number of variables simultaneously analyzed. The moment-based signal search is exemplified and tested in various 1D toy models mimicking typical high-energy signal--background configurations. Moment-based techniques should be particularly appropriate for the searches for effective operators at the LHC.

Sylvain Fichet

2014-07-03T23:59:59.000Z

186

Z. B. He et al., Nickel catalyst shape Etchant-induced shaping of nanoparticle  

E-Print Network [OSTI]

Z. B. He et al., Nickel catalyst shape - 1 - Etchant-induced shaping of nanoparticle catalysts al., Nickel catalyst shape - 2 - Abstract Carbon nanofibres (CNFs) obtained by plasma show in this paper that the shape of Ni nanoparticle catalysts, and in turn the CNF properties, can

Boyer, Edmond

187

Early genetic evaluation of loblolly pine based on growth characteristics of seedlings grown under four moisture regimes  

E-Print Network [OSTI]

: 1) average seed weight per family, 2) height at 8, 10, 1Z, 14, 16, 1B, 20, ZZ, and 24 weeks of age, 3) incremental height growth following moisture stress treatments, 4) average height growth rate per week following moisture stress treatments, 5... seedling shoot weight and shoot-root ratio were good indicators of the field performance of mature trees tested over a range of site conditions. The aver age shoot- root rati o per family of seedlings grown under unstressed moisture conditions...

Waxler, Michael Steven

2012-06-07T23:59:59.000Z

188

Post polymerization cure shape memory polymers  

DOE Patents [OSTI]

This invention relates to chemical polymer compositions, methods of synthesis, and fabrication methods for devices regarding polymers capable of displaying shape memory behavior (SMPs) and which can first be polymerized to a linear or branched polymeric structure, having thermoplastic properties, subsequently processed into a device through processes typical of polymer melts, solutions, and dispersions and then crossed linked to a shape memory thermoset polymer retaining the processed shape.

Wilson, Thomas S; Hearon, Michael Keith; Bearinger, Jane P

2014-11-11T23:59:59.000Z

189

Wilson loop dependence on the contour shape  

Science Journals Connector (OSTI)

By computing exactly the Wilson loop expectation value for two-dimensional quantum electrodynamics, we show that the nonleading terms depend drastically on the shape of the contour.

H. A. Falomir, R. E. Gamboa Sarav, and F. A. Schaposnik

1982-01-15T23:59:59.000Z

190

Shaping Tomorrow's Wind Energy Leaders | Department of Energy  

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

Shaping Tomorrow's Wind Energy Leaders Shaping Tomorrow's Wind Energy Leaders Addthis Duration 2:22 Topic Wind Science Education...

191

Comparison of different test methods for the measurement of fabric or garment moisture transfer properties  

Science Journals Connector (OSTI)

Several test methods exist for determining the water vapour permeability or resistance of textile fabrics or garments. The differences and interrelationships between these methods are not always clear, which presents a problem in comparing results from different test methods. This study is aimed at investigating the relationships between the test results from four typical test methods, including the moisture transmission test (Model CS-141), ASTM E96 cup method, sweating guarded hot plate method (ISO11092) and the sweating fabric manikin (Walter). For the range of air permeable knitted fabrics tested, it was found that good interrelationships exist between the results from the four types of test methods, although some discrepancies exist between different tests due to differences in testing conditions. Test results from different moisture transfer test methods can therefore be convertible with due consideration.

F Kar; J Fan; W Yu

2007-01-01T23:59:59.000Z

192

Ovrview: The Shape of Hadrons  

E-Print Network [OSTI]

In this article we address the physical basis of the deviation of hadron shapes from spherical symmetry (non-spherical amplitudes) with focus on the nucleon and $\\Delta$. An overview of both the experimental methods and results and the current theoretical understanding of the issue is presented. At the present time the most quantitative method is the $\\gamma^{*} p \\to \\Delta$ reaction for which significant non-spherical electric (E2) and Coulomb quadrupole (C2) amplitudes have been observed with good precision as a function of Q^{2} from the photon point through 6 GeV^{2}. Quark model calculations for these quadrupole amplitudes are at least an order of magnitude too small and even have the wrong sign. Lattice QCD, chiral effective field theory, and dynamic model calculations which include the effects of the pion-cloud are in approximate agreement with experiment. This is expected due to the spontaneous breaking of chiral symmetry in QCD and the resulting, long range (low Q^{2}) effects of the pion-cloud. Other observables such as nucleon form factors and virtual Compton scattering experiments indicate that the pion-cloud is playing a significant role in nucleon structure. Semi-inclusive deep inelastic scattering experiments with transverse polarized beam and target also show the effect of non-zero quark angular momentum.

A. M. Bernstein; C. N. Papanicolas

2007-07-31T23:59:59.000Z

193

Use of soil moisture depletion models and rainfall probability in predicting the irrigation requirements of crops  

E-Print Network [OSTI]

of precipitation events in estimating the probable success of his venture as related to the avail nb! lity of sufficient water resources precipitation is governed by chance phenomena, that is, there are so many causes at work that the influence of each cannot... depletion equations under optimum soil moisture conditions Recession constants Application of soil mcisture accounring model Irrigation requirements Retention relations Irrigation requirements distributions Raini'all probabilities Neekly rainfall...

David, Wilfredo P

1969-01-01T23:59:59.000Z

194

A study of the high pressure pycnometer for determining moisture content of soils  

E-Print Network [OSTI]

content can be computed Moisture content is one of the most frequently determined soil characteristicso It is used in nearly all soils tests including Atterberg limits and indices detexminations, Proctor compaction tests, consolidation tests, and in... porous medium placed in the soilo The amount of water is determined by means of previously prepared calibration curves for each material. In one method, the electrodes are normally placed in gypsum, plaster cf Paris, or fiberglass blocks which act...

Stout, Louis Edward

2012-06-07T23:59:59.000Z

195

Influence of Airflow on Laboratory Storage of High Moisture Corn Stover  

SciTech Connect (OSTI)

Storing high moisture biomass for bioenergy use is a reality in many areas of the country where wet harvest conditions and environmental factors prevent dry storage from being feasible. Aerobic storage of high moisture biomass leads to microbial degradation and self-heating, but oxygen limitation can aid in material preservation. To understand the influence of oxygen presence on high moisture biomass (50 %, wet basis), three airflow rates were tested on corn stover stored in laboratory reactors. Temperature, carbon dioxide production, dry matter loss, chemical composition, fungal abundance, pH, and organic acids were used to monitor the effects of airflow on storage conditions. The results of this work indicate that oxygen availability impacts both the duration of self-heating and the severity of dry matter loss. High airflow systems experienced the greatest initial rates of loss but a shortened microbially active period that limited total dry matter loss (19 %). Intermediate airflow had improved preservation in short-term storage compared to high airflow systems but accumulated the greatest dry matter loss over time (up to 27 %) as a result of an extended microbially active period. Low airflow systems displayed the best performance with the lowest rates of loss and total loss (10 %) in storage at 50 days. Total structural sugar levels of the stored material were preserved, although glucan enrichment and xylan loss were documented in the high and intermediate flow conditions. By understanding the role of oxygen availability on biomass storage performance, the requirements for high moisture storage solutions may begin to be experimentally defined.

Lynn M. Wendt; Ian J. Bonner; Amber N. Hoover; Rachel M. Emerson; William A. Smith

2014-04-01T23:59:59.000Z

196

Effect of an external stress on moisture diffusion in composite materials  

E-Print Network [OSTI]

. . 49 LIST OF FIGURES Figure Page Cure Cycle for Hexcel F155 Graphite/Epoxy. . Cure Cycle for Narmco M329-7 Adhesive. Final Configuration of the Graphite/Epoxy and Stainless Steel Tensile Coupons. Load Frame Used to Stress Tensile Coupons During...-ply laminates absorbed more moisture than unidirectional laminates. However, it was also noted that cross-ply laminates are less compact than unidirectional laminates. Gillat and Broutman [5] subjected bidirectional graphite/epoxy laminates to external loads...

Porth, Edward John

2012-06-07T23:59:59.000Z

197

Effect of external stress on moisture diffusion in an epoxy resin and its composite material  

E-Print Network [OSTI]

) Michael Chamberlain Henson, B. S. , Texas A&N University Chairman of Advisory Comnittee: Dr. Y. Weitsman The effects of stress on moisture diffusion in a graphite epoxy composrte material have been studied experimentally by examining the correspondrng... diffusion at all stress levels while the graphite epoxy generated results indicative of Non-Fickean, . concentration dependent diffusion at different levels of stress. The external stress affected both materials in a similar manner, causing...

Henson, Michael Chamberlain

2012-06-07T23:59:59.000Z

198

Moisture performance of sealed attics in the mixed-humid climate  

SciTech Connect (OSTI)

Oak Ridge National Laboratory studied 8 homes in the mixed-humid climate, 4 with vented attics and 4 with sealed attics. ORNL wanted to understand the moisture performance of the sealed attic and how it affected the interior environment. We found that the attic and interior of sealed attic homes were more humid than the attic and interior observed in vented attic homes. This is due to the lack of ventilation in the sealed attic. Historically attics have been vented to dehumidify the attic and interior of the home. A sealed attic design greatly reduces the venting potential and thus this drying pathway and can cause elevated interior moisture over a vented attic home. Despite the elevated attic and interior moisture in the sealed attic homes, so far no mold or material degradation has been found. The roof sheathing moisture content has stayed below 20%, indicating low potential for material degradation. Also the relative humidity at the roof sheathing has stayed within the ASHRAE 160 design criteria except for a short time during the 2011/2012 winter. This was due to a combination of the sealed attic design (minimal venting to the outside) and the duct work not being operated in the attic which usually provides a dehumidification pathway. It was also found that when the humidity was controlled using the HVAC system, it resulted in 7% more cooling energy consumption. In the mixed-humid climate this reduces the cost effectiveness of the sealed attic design as a solution for bringing ducts into a semi-conditioned space. Because of this we are recommending the other alternatives be used to bringing ducts into the conditioned space in both new construction and retrofit work in the mixed-humid climate.

Boudreaux, Philip R [ORNL] [ORNL; Pallin, Simon B [ORNL] [ORNL; Jackson, Roderick K [ORNL] [ORNL

2013-12-01T23:59:59.000Z

199

CHAMPS-Multizone-A Combined Heat, Air, Moisture and Pollutant Simulation  

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

CHAMPS-Multizone-A Combined Heat, Air, Moisture and Pollutant Simulation CHAMPS-Multizone-A Combined Heat, Air, Moisture and Pollutant Simulation Environment for Whole-building Performance Analysis Title CHAMPS-Multizone-A Combined Heat, Air, Moisture and Pollutant Simulation Environment for Whole-building Performance Analysis Publication Type Journal Article Year of Publication 2012 Authors Zhang, J. S., Wei Feng, John Grunewald, Andreas Nicolai, and Carey Zhang Journal HVAC&R Research Volume 18 Issue 1-2 Abstract A computer simulation tool, named "CHAMPS-Multizone" is introduced in this paper for analyzing bothenergy and IAQ performance of buildings. The simulation model accounts for the dynamic effects ofoutdoor climate conditions (solar radiation, wind speed and direction, and contaminant concentrations),building materials and envelope system design, multizone air and contaminant flows in buildings,internal heat and pollutant sources, and operation of the building HVAC systems on the buildingperformance. It enables combined analysis of building energy efficiency and indoor air quality. Themodel also has the ability to input building geometry data and HVAC system operation relatedinformation from software such as SketchUp and DesignBuilder via IDF file format. A "bridge" to accessstatic and dynamic building data stored in a "virtual building" database is also developed, allowingconvenient input of initial and boundary conditions for the simulation, and for comparisons between thepredicted and measured results. This paper summarizes the mathematical models, adoptedassumptions, methods of implementation, and verification and validation results. The needs andchallenges for further development are also discussed

200

The recycling rate of atmospheric moisture over the past two decades (19882009)  

Science Journals Connector (OSTI)

Numerical models predict that the recycling rate of atmospheric moisture decreases with time at the global scale, in response to global warming. A recent observational study (Wentz etal 2007 Science 317 2335) did not agree with the results from numerical models. Here, we examine the recycling rate by using the latest data sets for precipitation and water vapor, and suggest a consistent view of the global recycling rate of atmospheric moisture between numerical models and observations. Our analyses show that the recycling rate of atmospheric moisture has also decreased over the global oceans during the past two decades. In addition, we find different temporal variations of the recycling rate in different regions when exploring the spatial pattern of the recycling rate. In particular, the recycling rate has increased in the high-precipitation region around the equator (i.e., the intertropical convergence zone) and decreased in the low-precipitation region located either side of the equator over the past two decades. Further exploration suggests that the temporal variation of precipitation is stronger than that of water vapor, which results in the positive trend of the recycling rate in the high-precipitation region and the negative trend of the recycling rate in the low-precipitation region.

Liming Li; Xun Jiang; Moustafa T Chahine; Edward T Olsen; Eric J Fetzer; Luke Chen; Yuk L Yung

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

A Diagnosis of the 19792005 Extreme Rainfall Events in the Southeastern United States with Isentropic Moisture Tracing  

Science Journals Connector (OSTI)

A detailed analysis is performed to better understand the interannual and subseasonal variability of moisture sources of major recent dry (1980, 1990, and 2000) and wet (1994, 2003, and 2005) JuneAugust (JJA) seasons in the southeastern United ...

Steven C. Chan; Vasubandhu Misra

2010-04-01T23:59:59.000Z

202

Warm Conveyor Belts in the ERA-Interim Dataset (19792010). Part II: Moisture Origin and Relevance for Precipitation  

Science Journals Connector (OSTI)

The role of moisture for extratropical atmospheric dynamics is particularly pronounced within warm conveyor belts (WCBs), which are characterized by intense latent heat release and precipitation formation. Based on the WCB climatology for the ...

Stephan Pfahl; Erica Madonna; Maxi Boettcher; Hanna Joos; Heini Wernli

2014-01-01T23:59:59.000Z

203

Early-age concrete temperature and moisture relative to curing effectiveness and projected effects on selected aspects of slab behavior  

E-Print Network [OSTI]

-desiccation. A full scale concrete pavement test study was conducted at the FAA National Airport Pavement Test Facility (NAPTF) near Atlantic City, New Jersey. In this study, the material properties, i.e. thermal conductivity and moisture diffusivity, were...

Ye, Dan

2009-05-15T23:59:59.000Z

204

Precipitation and soil impacts on partitioning of subsurface moisture in Avena barbata: Observations from a greenhouse experiment  

SciTech Connect (OSTI)

The primary objective of this study was to assess the impact of two grassland soils and precipitation regimes on soil-moisture dynamics. We set up an experiment in a greenhouse, and monitored soil moisture dynamics in mesocosms planted with Avena barbata, an annual species found in California grasslands. By repeating the precipitation input at regular intervals, we were able to observe plant manipulation of soil moisture during well-defined periods during the growing season. We found that the amount of water partitioned to evapotranspiration, seepage, and soil storage varied among different growth stages. Further, both soil type and precipitation regimes had a significant impact on redistributing soil moisture. Whereas in the low-precipitation treatments most water was released to the atmosphere as evapotranspiration, major losses from the high-precipitation treatment occurred as gravity drainage. Observations from this study emphasize the importance of understanding intra-seasonal relationships between vegetation, soil, and water.

Salve, R.; Torn, M.S.

2011-03-01T23:59:59.000Z

205

Impact of Hillslope-Scale Organization of Topography, Soil Moisture, Soil Temperature, and Vegetation on Modeling Surface Microwave Radiation Emission  

E-Print Network [OSTI]

Microwave radiometry will emerge as an important tool for global remote sensing of near-surface soil moisture in the coming decade. In this modeling study, we find that hillslope-scale topography (tens of meters) influences ...

Flores, Alejandro N.

206

A new method for nondestructive evaluation of solid wood moisture content based on dual-energy X-ray absorptiometry  

Science Journals Connector (OSTI)

This paper presents a new method to determine the moisture content of solid wood based on the principle of dual-energy X-ray absorptiometry. The study investigates the ... obtained equation is proposed to calcula...

Takashi Tanaka; Yasuo Kawai

2013-11-01T23:59:59.000Z

207

Preliminary Results from Long-Term Measurements of Atmospheric Moisture in the Marine Boundary Layer in the Gulf of Mexico*  

Science Journals Connector (OSTI)

Measurements of boundary layer moisture have been acquired from Rotronic MP-100 sensors deployed on two National Data Buoy Center (NDBC) buoys in the northern Gulf of Mexico from June through November 1993. For one sensor that was retrieved ...

Laurence C. Breaker; David B. Gilhousen; Lawrence D. Burroughs

1998-06-01T23:59:59.000Z

208

Understanding Spatio-Temporal Variability and Associated Physical Controls of Near-Surface Soil Moisture in Different Hydro-Climates  

E-Print Network [OSTI]

Near-surface soil moisture is a key state variable of the hydrologic cycle and plays a significant role in the global water and energy balance by affecting several hydrological, ecological, meteorological, geomorphologic, and other natural processes...

Joshi, Champa

2013-05-06T23:59:59.000Z

209

A model of heat and moisture transfer through clothing integratedwith the UC Berkeley comfort model  

E-Print Network [OSTI]

E, Zhang H, Huizenga C. Heat and moisture transfer throughMG, Wang XX, et al. Apparent latent heat of evaporation fromclothing: attenuation and "heat pipe" effects. J Appl

Fu, Ming; Yu, Tiefeng; Zhang, Hui; Arens, Edward; Weng, Wenguo; Yuan, Hongyong

2014-01-01T23:59:59.000Z

210

Geodesic Shape Retrieval via Optimal Mass Transport  

E-Print Network [OSTI]

Geodesic Shape Retrieval via Optimal Mass Transport Julien Rabin, Gabriel Peyr´e, and Laurent D presents a new method for 2-D and 3-D shape retrieval based on geodesic signatures. These signatures of geodesic distance maps to each point. The resulting high dimensional distributions are matched to perform

Boyer, Edmond

211

Moisture and temperature effects on curvature of anti-symmetric cross-ply graphite/epoxy laminates  

E-Print Network [OSTI]

MOISTURE AND TEMPERATURE EFFECTS ON CURVATURE OF ANTI-SYMMETRIC CROSS-PLY GRAPHITE/EPOXY LAMINATES A Thesis by RANDALL STEPHEN LOTT Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1980 Major Subject: Mechanical Engineering MOISTURE AND TEMPERATURE EFFECTS ON CURVATURE OF ANTI-SYMMETRIC CROSS-PLY GRAPHITE/EPOXY LAMINATES A Thesis by RANDALL STEPHEN LOTT Approved as to style and content...

Lott, Randall Stephen

2012-06-07T23:59:59.000Z

212

The use of infrared satellite cloud imagery data as proxy data for moisture and diabatic heating in data assimilation  

SciTech Connect (OSTI)

Polar-orbiting and geostationary satellites can provide useful proxy sources of moisture data and diabatic heating. It is shown that the utilization of this information during data assimilation leads to enhanced precipitation in the tropics and has the potential to minimize spinup in the model. Additionally, the utilization of moisture initialization leads to improved agreement between the model and observed precipitation during the early stages of model integration. 22 refs.

Puri, K.; Davidson, N.E. (Bureau of Meteorology, Research Centre, Melbourne (Australia))

1992-10-01T23:59:59.000Z

213

The use of electrical resistance in the plant stem to measure plant response to soil moisture tension and evaporative demand  

E-Print Network [OSTI]

. . . . . . , . . . . . . ~. . . . . . . . . 30 10- Diurnal cotton plant stem electrical resistance readings as recorded simultaneously from three soil moisture levels. ~ 36 Flot 1-P (cotton), Diurnal cotton plant stem electrical resistance readings with soil moisture tension equal to 13... atsespheresl ~ ~ a ~ ~ ~ ~ ~ . ~ ~ ~ ~ ta ~ I ~ ~ ~ t ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ae ~ ~ ~ a ~ ~ t ~ ~ ~ ~ 37 13 ' Electrical resistance in the plant stem, and evapotrans- piration in non-irrigated and irrigated cotton plots during one diurnal period. . ~ 39 Plots...

Box, James E.

1956-01-01T23:59:59.000Z

214

The Influence of Moisture Content on the Evaluation of Latent Heat of Molten Salts used for Thermal Energy Storage Applications  

Science Journals Connector (OSTI)

Abstract Precise measurements of the thermo-physical properties are essential for the process design of thermal energy storage systems. This paper is concerned with the measurement of heat of fusion of molten salts, which plays a key role in determining the storage capacity of latent heat based thermal energy storage units. The focus of the work is on the effect of moisture content of molten salts on latent heat measurements using a differential scanning calorimetry. The results reveal that, the change in the mass of the samples investigated is due to moisture content, and hence, this leads to a reduction in the value of the heat of fusion of the phase change material. For instance, the heat of fusion for one of the wet samples (containing moisture) was determined to be 314.29J/g. However, the calculated heat of fusion for the same sample without moisture is found to be 350.029J/g. This is associated with the methodology of the DSC analysis, which does not consider the mass of the moisture in the sample. It is found that, the deviation in the heat of fusion due to the effect of the moisture content in the investigated samples is proportional to the amount of moisture in the original sample. Therefore, it is imperative to consider the effect of the moisture content on the evaluation of the latent heat of molten salts. In order to obtain reliable findings, either the samples should be dried and then weighed promptly, or weighed after the test and then re-evaluate the latent heat using the new weight.

Salama Omran; Peter Heggs; Yulong Ding

2014-01-01T23:59:59.000Z

215

Wall Design Redundancy for Improving the Moisture Performance of Building Cladding Systems in Hot-Humid Climates  

E-Print Network [OSTI]

by the NAHB Research Center. Instead, these inspections were performed with field observations and photographic recordings. Review of the Literature An extensive review of the literature on moisture problems in building envelopes was also conducted... by the NAHB Research Center. Instead, these inspections were performed with field observations and photographic recordings. Review of the Literature An extensive review of the literature on moisture problems in building envelopes was also conducted...

Graham, C. W.

2000-01-01T23:59:59.000Z

216

Response of pearl millet [Pennisetum americanum L. (Schum)] to soil moisture in one agroclimatological zone of Niger, West Africa  

E-Print Network [OSTI]

RESPONSE OF PEARL MILLET [(Pennisetum americanum L. (Schum) ] TO SOIL MOISTURE IN ONE AGROCLIMATOLOGICAL ZONE OF NIGER, WEST AFRICA A Thesis by Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1988 Major subject: Soil Science RESPONSE OF PEARL MILLET [Pennisetum americanum L. (Schum) ] TO SOIL MOISTURE IN ONE AGROCLIMATOLOGICAL ZONE OF NIGER, WEST AFRICA A Thesis by Approved as to style...

Gandah, Mohamadou

1988-01-01T23:59:59.000Z

217

Shape memory response of ni2mnga and nimncoin magnetic shape memory alloys under compression  

E-Print Network [OSTI]

In this study, the shape memory response of Ni2MnGa and NiMnCoIn magnetic shape memory alloys was observed under compressive stresses. Ni2MnGa is a magnetic shape memory alloy (MSMA) that has been shown to exhibit fully reversible, stressassisted...

Brewer, Andrew Lee

2009-05-15T23:59:59.000Z

218

A Birkhoff theorem for Shape Dynamics  

E-Print Network [OSTI]

Shape Dynamics is a theory of gravity that replaces refoliation invariance for spatial Weyl invariance. Those solutions of the Einstein equations that have global, constant mean curvature slicings, are mirrored by solutions in Shape Dynamics. However, there are solutions of Shape Dynamics that have no counterpart in General relativity, just as there are solutions of GR that are not completely foliable by global constant mean curvature slicings (such as the Schwarzschild spacetime). It is therefore interesting to analyze directly the equations of motion of Shape Dynamics in order to find its own solutions, irrespective of properties of known solutions of GR. Here I perform a first study in this direction by utilizing the equations of motion of Shape Dynamics in a spherically symmetric, asymptotically flat ansatz to derive an analogue of the Birkhoff theorem. There are two significant differences with respect to the usual Birkhoff theorem in GR. The first regards the construction of the solution: the spatial Weyl gauge freedom of shape dynamics is used to simplify the problem, and boundary conditions are required. In fact the derivation is simpler than the usual Birkhof theorem as no Christoffel symbols are needed. The second, and most important difference is that the solution obtained is uniquely the isotropic wormhole solution, in which no singularity is present, as opposed to maximally extended Schwarzschild. This provides an explicit example of the breaking of the duality between General relativity and Shape Dynamics, and exhibits some of its consequences.

Henrique Gomes

2013-05-01T23:59:59.000Z

219

Shape memory system with integrated actuation using embedded particles  

DOE Patents [OSTI]

A shape memory material with integrated actuation using embedded particles. One embodiment provides a shape memory material apparatus comprising a shape memory material body and magnetic pieces in the shape memory material body. Another embodiment provides a method of actuating a device to perform an activity on a subject comprising the steps of positioning a shape memory material body in a desired position with regard to the subject, the shape memory material body capable of being formed in a specific primary shape, reformed into a secondary stable shape, and controllably actuated to recover the specific primary shape; including pieces in the shape memory material body; and actuating the shape memory material body using the pieces causing the shape memory material body to be controllably actuated to recover the specific primary shape and perform the activity on the subject.

Buckley, Patrick R. (New York, NY); Maitland, Duncan J. (Pleasant Hill, CA)

2012-05-29T23:59:59.000Z

220

Hierarchical 3D diffusion wavelet shape priors  

E-Print Network [OSTI]

In this paper, we propose a novel representation of prior knowledge for image segmentation, using diffusion wavelets that can reflect arbitrary continuous interdependencies in shape data. The application of diffusion ...

Langs, Georg

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Size Effects in Ferromagnetic Shape Memory Alloys  

E-Print Network [OSTI]

effects in these mechanisms has both scientific and technological relevance. Superelastic behavior of Ni54Fe19Ga27 shape memory alloy single crystalline pillars was studied under compression as a function of pillar diameter. Multiple pillars...

Ozdemir, Nevin

2012-07-16T23:59:59.000Z

222

Orthopaedic applications of ferromagnetic shape memory alloys  

E-Print Network [OSTI]

Ferromagnetic shape memory alloys (FSMAs) are a new class of magnetic field-actuated active materials with no current commercial applications. By applying a magnetic field of around 0.4 T, they can exert a stress of ...

Guo, Weimin, M. Eng. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

223

Biopolymers: Shape memory in spider draglines  

Science Journals Connector (OSTI)

... a dangling spider twist and turn in the breeze. Measurements on the dragline of the humble garden spider show why. The silk has a torsional shape memory, and can totally ...

Olivier Emile; Albert Le Floch; Fritz Vollrath

2006-03-29T23:59:59.000Z

224

The Design of Shape from Motion Constraints  

E-Print Network [OSTI]

This report presents a set of representations methodologies and tools for the purpose of visualizing, analyzing and designing functional shapes in terms of constraints on motion. The core of the research is an interactive ...

Caine, Michael E.

1993-09-01T23:59:59.000Z

225

Phase relationship equation for moisture induced shrink and swell of soils  

E-Print Network [OSTI]

to the w moisture content prior to swell, a = air void coefficient equal to the ratio of air volume change (AV?) to the initial air volume (V?), n(1-S) = ratio of VA to the initial total volume (Vr). The shrinkage form of PREMISS (1. 2), also derived... in Chapter VI, is: AV hw = Sn ? (t + a, ?j r where a? = the air void constant equal to the ratio of dV? to the change in water volume (dV~). The parameters S, n and w are readily obtained from soil samples. Means of obtaining the change im water...

Hoffmann, Stacey Bruemmer

2012-06-07T23:59:59.000Z

226

Effect of drying, initial moisture and variety in corn wet milling  

Science Journals Connector (OSTI)

A laboratory wet-milling process was used to determine starch yield and starch recovery of dent and flint corn dried under different drying conditions. A comparison with undried samples was performed. For the undried samples the starch recovery was not significantly different between both varieties. It decreased as both initial moisture content of the grains and drying air temperature increased. The reduction in starch recovery as well as the contamination by protein was greater for the flint than for the dent corn. Swelling, solubility and initial gelatinization temperatures of the starch derived from both varieties were affected by the drying conditions.

Mnica Haros; Costantino Suarez

1997-01-01T23:59:59.000Z

227

The effect of soil moisture levels on evapotranspiration from cotton and grain sorghum  

E-Print Network [OSTI]

measured value of soil t moisture. Substituting these values into Equations (I), (2) and (3) gave the following three equations: SM =be ct t SM =bK t t SM = d ? b log (t+c ) t (5) (6) The next logical step would have been to evaluate... as several atmospheres pressure which is sufficient tc move water to the leaves of even the tallest trees. The flew cf water can be governed by either the rate at which it is extracted from the soil or the rate at which it moves through the plants...

Schneider, Arland David

1964-01-01T23:59:59.000Z

228

Soil temperature, soil moisture and thaw depth, Barrow, Alaska, Ver. 1  

SciTech Connect (OSTI)

This dataset consists of field measurements of soil properties made during 2012 and 2013 in areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska. Included are i) weekly measurements of thaw depth, soil moisture, presence and depth of standing water, and soil temperature made during the 2012 and 2013 growing seasons (June - September) and ii) half-hourly measurements of soil temperature logged continuously during the period June 2012 to September 2013.

Sloan, V.L.; J.A. Liebig; M.S. Hahn; J.B. Curtis; J.D. Brooks; A. Rogers; C.M. Iversen; R.J. Norby

2014-01-10T23:59:59.000Z

229

Cavitation controlled acoustic probe for fabric spot cleaning and moisture monitoring  

DOE Patents [OSTI]

A method and apparatus are provided for monitoring a fabric. An acoustic probe generates acoustic waves relative to the fabric. An acoustic sensor, such as an accelerometer is coupled to the acoustic probe for generating a signal representative of cavitation activity in the fabric. The generated cavitation activity representative signal is processed to indicate moisture content of the fabric. A feature of the invention is a feedback control signal is generated responsive to the generated cavitation activity representative signal. The feedback control signal can be used to control the energy level of the generated acoustic waves and to control the application of a cleaning solution to the fabric.

Sheen, Shuh-Haw (Naperville, IL); Chien, Hual-Te (Naperville, IL); Raptis, Apostolos C. (Downers Grove, IL)

1997-01-01T23:59:59.000Z

230

Fate of 14C-labeled dissolved organic matter in paddy and upland soils in responding to moisture  

Science Journals Connector (OSTI)

Abstract Soil organic matter (SOM) content in paddy soils is higher than that in upland soils in tropical and subtropical China. The dissolved organic matter (DOM) concentration, however, is lower in paddy soils. We hypothesize that soil moisture strongly controls the fate of DOM, and thereby leads to differences between the two agricultural soils under contrasting management regimens. A 100-day incubation experiment was conducted to trace the fate and biodegradability of DOM in paddy and upland soils under three moisture levels: 45%, 75%, and 105% of the water holding capacity (WHC). 14C labeled DOM, extracted from the 14C labeled rice plant material, was incubated in paddy and upland soils, and the mineralization to 14CO2 and incorporation into microbial biomass were analyzed. Labile and refractory components of the initial 14C labeled DOM and their respective half-lives were calculated by a double exponential model. During incubation, the mineralization of the initial 14C labeled DOM in the paddy soils was more affected by moisture than in the upland soils. The amount of 14C incorporated into the microbial biomass (2.411.0% of the initial DOM-14C activity) was less affected by moisture in the paddy soils than in the upland soils. At any of the moisture levels, 1) the mineralization of DOM to 14CO2 within 100days was 1.22.1-fold higher in the paddy soils (41.960.0% of the initial DOM-14C activity) than in the upland soils (28.735.7%), 2) 14C activity remaining in solution was significantly lower in the paddy soils than in the upland soils, and 3) 14C activity remaining in the same agricultural soil solution was not significantly different among the three moisture levels after 20days. Therefore, moisture strongly controls DOM fate, but moisture was not the key factor in determining the lower DOM in the paddy soils than in the upland soils. The UV absorbance of DOM at 280nm indicates less aromaticity of DOM from the paddy soils than from the upland soils. At any of the moisture levels, much more labile DOM was found in paddy soils (34.349.2% of the initial 14C labeled DOM) compared with that in upland soils (19.423.9%). This demonstrates that the lower DOM content in the paddy soil compared with that in the upland soil is probably determined by the less complex components and structure of the DOM.

Xiangbi Chen; Aihua Wang; Yang Li; Lening Hu; Hua Zheng; Xunyang He; Tida Ge; Jinshui Wu; Yakov Kuzyakov; Yirong Su

2014-01-01T23:59:59.000Z

231

Hybrid method for aerodynamic shape optimization in automotive industry  

E-Print Network [OSTI]

Hybrid method for aerodynamic shape optimization in automotive industry Freedeerique Muyl April 2003; accepted 4 June 2003 Abstract An aerodynamic shape optimization tool for complex industrial reasons, concerns car manufacturers. Consequently, the improvement of the aerodynamics of car shapes, more

Dumas, Laurent

232

Experimental study on cryogenic moisture uptake in polyurethane foam insulation material  

Science Journals Connector (OSTI)

Rigid foam is widely used to insulate cryogenic tanks, in particular for space launch vehicles due to its lightweight, mechanical strength and thermal-insulating performance. Up to now, little information is available on the intrusion of moisture into the material under cryogenic conditions, which will bring substantial additional weight for the space vehicles at lift-off. A cryogenic moisture uptake apparatus has been designed and fabricated to measure the amount of water uptake into the polyurethane foam. One side of the specimen is exposed to an environment with high humidity and ambient temperature, while the other with cryogenic temperature at approximately 78K. A total of 16 specimens were tested for up to 24h to explore the effects of the surface thermal protection layer, the foam thickness, exposed time, the butt joints, and the material density on water uptake of the foam. The results are constructive for the applications of the foam to the cryogenic insulation system in space launch vehicles.

X.B. Zhang; L. Yao; L.M. Qiu; Z.H. Gan; R.P. Yang; X.J. Ma; Z.H. Liu

2012-01-01T23:59:59.000Z

233

Building America Webinar: High Performance Enclosure Strategies: Part II, New Construction- August 13, 2014- Moisture Monitoring Results in an R-40 Wall  

Broader source: Energy.gov [DOE]

This presentation, Moisture Monitoring Results in an R-40 Wall, was presented at the Building America webinar, High Performance Enclosure Strategies, Part II, on August 13, 2014.

234

By losing their shape, material fails batteries | EMSL  

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

By losing their shape, material fails batteries By losing their shape, material fails batteries Too many electrons at the lithiation front in silicon are a problem Molecular...

235

Shaping the Market - Market Transformation | Department of Energy  

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

Shaping the Market - Market Transformation Shaping the Market - Market Transformation Provides an overview of how the LEAP program (Charlottesville, VA) is working with real estate...

236

VIDEO: Shaping Tomorrow's Wind Energy Leaders | Department of...  

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

Shaping Tomorrow's Wind Energy Leaders VIDEO: Shaping Tomorrow's Wind Energy Leaders August 18, 2014 - 8:55am Addthis Go behind the scenes in the Energy Department's Collegiate...

237

Impact of Soil MoistureAtmosphere Interactions on Surface Temperature Distribution  

Science Journals Connector (OSTI)

Understanding how different physical processes can shape the probability distribution function (PDF) of surface temperature, in particular the tails of the distribution, is essential for the attribution and projection of future extreme temperature ...

Alexis Berg; Benjamin R. Lintner; Kirsten L. Findell; Sergey Malyshev; Paul C. Loikith; Pierre Gentine

2014-11-01T23:59:59.000Z

238

Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads  

SciTech Connect (OSTI)

This document serves as the final report documenting work completed by Oak Ridge National Laboratory (ORNL) and the Fraunhofer Institute in Building Physics (Holzkirchen, Germany) under an international CRADA No. 0575 with Fraunhofer Institute of Bauphysics of the Federal Republic of Germany for Researching Complex Heat, Air and Moisture Interactions for a Wide Range of Building Envelope Systems and Environmental Loads. This CRADA required a multi-faceted approach to building envelope research that included a moisture engineering approach by blending extensive material property analysis, laboratory system and sub-system thermal and moisture testing, and advanced moisture analysis prediction performance. The Participant's Institute for Building physics (IBP) and the Contractor's Buildings Technology Center (BTC) identified potential research projects and activities capable of accelerating and advancing the development of innovative, low energy and durable building envelope systems in diverse climates. This allowed a major leverage of the limited resources available to ORNL to execute the required Department of Energy (DOE) directives in the area of moisture engineering. A joint working group (ORNL and Fraunhofer IBP) was assembled and a research plan was executed from May 2000 to May 2005. A number of key deliverables were produced such as adoption of North American loading into the WUFI-software. in addition the ORNL Weather File Analyzer was created and this has been used to address environmental loading for a variety of US climates. At least 4 papers have been co-written with the CRADA partners, and a chapter in the ASTM Manual 40 on Moisture Analysis and Condensation Control. All deliverables and goals were met and exceeded making this collaboration a success to all parties involves.

Karagiozis, A.N.

2007-05-15T23:59:59.000Z

239

Flexible Residential Test Facility: Impact of Infiltration and Ventilation on Measured Cooling Season Energy and Moisture Levels  

SciTech Connect (OSTI)

Air infiltration and ventilation in residential buildings is a very large part of the heating loads, but empirical data regarding the impact on space cooling has been lacking. Moreover, there has been little data on how building tightness might relate to building interior moisture levels in homes in a hot and humid climate. To address this need, BA-PIRC has conducted research to assess the moisture and cooling load impacts of airtightness and mechanical ventilation in two identical laboratory homes in the hot-humid climate over the cooling season.

Parker, D.; Kono, J.; Vieira, R.; Fairey, P.; Sherwin, J.; Withers, C.; Hoak, D.; Beal, D.

2014-05-01T23:59:59.000Z

240

A soil moisture budget analysis of Texas using basic climatic data while assuming a possible warming trend across the state  

E-Print Network [OSTI]

of the slope (dashed lines) of the regression line of precipitation on mean temperature for the Lower Valley. 35. Isopleths of MTRANGE (in 'F) for Texas during August. 71 36. Percentage of monthly soil moisture (SM) for the High Plains for a O'F (control... are significant at the 95% confidence interval. 74 37. Percentage of monthly soil moisture (SM) for the High Plains for a O'F (control), I' F, 2'F, 3'F, and 4'F increase in the mean annual temperature of Texas. Mean monthly temperatures increase non...

Bjornson, Brian Matthew

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Release mechanism utilizing shape memory polymer material  

DOE Patents [OSTI]

Microfabricated therapeutic actuators are fabricated using a shape memory polymer (SMP), a polyurethane-based material that undergoes a phase transformation at a specified temperature (Tg). At a temperature above temperature Tg material is soft and can be easily reshaped into another configuration. As the temperature is lowered below temperature Tg the new shape is fixed and locked in as long as the material stays below temperature Tg. Upon reheating the material to a temperature above Tg, the material will return to its original shape. By the use of such SMP material, SMP microtubing can be used as a release actuator for the delivery of embolic coils through catheters into aneurysms, for example. The microtubing can be manufactured in various sizes and the phase change temperature Tg is determinate for an intended temperature target and intended use.

Lee, Abraham P. (Walnut Creek, CA); Northrup, M. Allen (Berkeley, CA); Ciarlo, Dino R. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA); Benett, William J. (Livermore, CA)

2000-01-01T23:59:59.000Z

242

Jacobi shape transition in fp shell nuclei  

Science Journals Connector (OSTI)

Jacobi shape transition from noncollective oblate to super or hyperdeformed collective prolate or triaxial shape taking place in rotating nuclei as in the case of gravitating rotating stars is studied in fp shell nuclei 44Ti, 48Cr, 52Fe, and 56Ni. The cranked Nilsson-Strutinsky method is used to detect such transition. The method of tuning the angular velocity to get fixed spin is utilized in these calculations. Pairing is not taken into account since Jacobi transition occurs only at very high spin where pairing correlations would have already vanished. Our results show that all the four nuclei considered in this work are good candidates for detecting the Jacobi shape transition.

G. Shanmugam; V. Ramasubramanian; S. N. Chintalapudi

2001-05-10T23:59:59.000Z

243

Coating thermal noise for arbitrary shaped beams  

E-Print Network [OSTI]

Advanced LIGO's sensitivity will be limited by coating noise. Though this noise depends on beam shape, and though nongaussian beams are being seriously considered for advanced LIGO, no published analysis exists to compare the quantitative thermal noise improvement alternate beams offer. In this paper, we derive and discuss a simple integral which completely characterizes the dependence of coating thermal noise on shape. The derivation used applies equally well, with minor modifications, to all other forms of thermal noise in the low-frequency limit.

Richard O'Shaughnessy

2006-10-13T23:59:59.000Z

244

Investigation of the Large-Scale Atmospheric Moisture Field over the Midwestern United States in Relation to Summer Precipitation. Part II: Recycling of Local Evapotranspiration and Association with Soil Moisture and Crop Yields  

Science Journals Connector (OSTI)

The relative contributions of locally evapotranspired (i.e., recycled) moisture versus externally advected water vapor for the growing-season precipitation of the U.S. Corn Belt and surrounding areas (1.23 106 km2) are estimated in this paper. ...

Abraham Zangvil; Diane H. Portis; Peter J. Lamb

2004-09-01T23:59:59.000Z

245

Characterization of Shape Memory Alloys Using Artificial Neural Networks  

E-Print Network [OSTI]

1 Characterization of Shape Memory Alloys Using Artificial Neural Networks Jim Henrickson, Kenton � Shape Memory Alloys � Artificial Neural Networks Process � Implement Shape Memory Alloy Model � Generate Training Data � Train Artificial Neural Network Results Conclusion Characterization of Shape

Valasek, John

246

Geodesic shape regression in the framework of currents  

E-Print Network [OSTI]

Geodesic shape regression in the framework of currents James Fishbaugh1 , Marcel Prastawa1 , Guido fully parameterize the geodesic shape evolution. This is in contrast to previous shape re- gression on the shape space and the corresponding re- gression function. In [5], a piecewise geodesic method has been

Prastawa, Marcel

247

Designing inner hood panels through a shape grammar based framework  

Science Journals Connector (OSTI)

A framework for a design tool based on shape grammars is presented as an effective means for supporting the early stages of design. The framework uses a shape grammar interpreter to implement parametric shape grammars, allowing the grammar to be used ... Keywords: Design Tool, Engineering, Shape Grammars

Jay P. McCormack; Jonathan Cagan

2002-09-01T23:59:59.000Z

248

IMPOSING AND TESTING FOR SHAPE RESTRICTIONS IN FLEXIBLE PARAMETRIC MODELS  

E-Print Network [OSTI]

0 IMPOSING AND TESTING FOR SHAPE RESTRICTIONS IN FLEXIBLE PARAMETRIC MODELS 1 Hendrik Wolff and inference to test for shape conditions in parametric models. We show that `regional' shape and test for all shape restrictions required by economic theory simultaneously in the "Berndt and Wood

Kaminsky, Werner

249

Acoustic wave (AW) based moisture sensor for use with corrosive gases  

DOE Patents [OSTI]

Moisture corrosive gas stream is measured as a function of the difference in resonant frequencies between two acoustic wave (AW) devices, each with a film which accepts at least one of the components of the gas stream. One AW is located in the gas stream while the other is located outside the gas stream but in the same thermal environment. In one embodiment, the film is a hydrophilic material such as SiO{sub 2}. In another embodiment, the SiO{sub 2} is covered with another film which is impermeable to the corrosive gas, such that the AW device in the gas stream measures only the water vapor. In yet another embodiment, the film comprises polyethylene oxide which is hydrophobic and measures only the partial pressure of the corrosive gas. Other embodiments allow for compensation of drift in the system. 8 figs.

Pfeifer, K.B.; Frye, G.C.; Schneider, T.W.

1996-11-05T23:59:59.000Z

250

Acoustic wave (AW) based moisture sensor for use with corrosive gases  

DOE Patents [OSTI]

Moisture corrosive gas stream is measured as a function of the difference in resonant frequencies between two acoustic wave (AW) devices, each with a film which accepts at least one of the components of the gas stream. One AW is located in the gas stream while the other is located outside the gas stream but in the same thermal environment. In one embodiment, the film is a hydrophilic material such as SiO.sub.2. In another embodiment, the SiO.sub.2 is covered with another film which is impermeable to the corrosive gas, such that the AW device in the gas stream measures only the water vapor. In yet another embodiment, the film comprises polyethylene oxide which is hydrophobic and measures only the partial pressure of the corrosive gas. Other embodiments allow for compensation of drift in the system.

Pfeifer, Kent B. (Los Lunas, NM); Frye, Gregory C. (Cedar Crest, NM); Schneider, Thomas W. (Albuquerque, NM)

1996-01-01T23:59:59.000Z

251

Test Plan to Evaluate the Relationship Among IAQ, Comfort, Moisture, and Ventilation in Humid Climates  

SciTech Connect (OSTI)

This experimental plan describes research being conducted by Pacific Northwest National Laboratory (PNNL), in coordinatation with Florida Solar Energy Center (FSEC), Florida HERO, and Lawrence Berkeley National Laboratory (LBNL) to evaluate the impact of ventilation rate on interior moisture levels, temperature distributions, and indoor air contaminant concentrations. Specifically, the research team will measure concentrations of indoor air contaminants, ventilation system flow rates, energy consumption, and temperature and relative humidity in ten homes in Gainesville, FL to characterize indoor pollutant levels and energy consumption associated with the observed ventilation rates. PNNL and FSEC have collaboratively prepared this experimental test plan, which describes background and context for the proposed study; the experimental design; specific monitoring points, including monitoring equipment, and sampling frequency; key research questions and the associated data analysis approach; experimental logistics, including schedule, milestones, and team member contact information; and clearly identifies the roles and responsibilities of each team in support of project objectives.

Widder, Sarah H.; Martin, Eric

2013-03-15T23:59:59.000Z

252

Geodesic Methods for Shape and Surface Processing  

E-Print Network [OSTI]

Geodesic Methods for Shape and Surface Processing Gabriel Peyr´e and Laurent Cohen Ceremade, UMR the theory and practice of the nu- merical computation of geodesic distances on Riemannian manifolds be preferred). Using this local tensor field, the geodesic distance is used to solve many problems of practical

Paris-Sud XI, Université de

253

Voxel-Space Shape Grammars Zacharia Crumley  

E-Print Network [OSTI]

. Keywords: procedural generation, shape grammars, voxels 1 INTRODUCTION For video games, virtual growing with the increase in computa- tional power and the quality of graphics. It is now at a point where content, par- ticularly plants, landscapes, and textures. This is ev- idenced by the growth of commercial

Gain, James

254

Discover this place. Shape your world.  

E-Print Network [OSTI]

Employment Report 2011 Discover this place. Shape your world. ® #12;Geographic Placement Class with an Internship 100% Class of 2012 Internship Statistics "We have been recruiting Owen students for more than,893 $6,154 Non-profit 2% Insufficient data Other 14% $4,071 $3,907 $2,500 $6,667 Petroleum/Energy 1

Bordenstein, Seth

255

Shape of isoshear contours in turbulent friction  

Science Journals Connector (OSTI)

We analyze line measurements of turbulent shear stress in a turbulent boundary layer in terms of isoshear contours. The statistics of the relative location of contour center lines points to a relation with coherent structures. The shape of these contours exhibits a remarkable scaling behavior that is reminiscent of that found in spatiotemporal chaos.

Willem van de Water and Eric van de Wetering

1992-06-15T23:59:59.000Z

256

Hexadecapole shape change in ytterbium isotopes  

Science Journals Connector (OSTI)

In Hartree-Fock calcualtions using nonrelativistic and relativistic models we see a change in sign from positive to negative of the hexadecapole moment with mass number around A=170. Analysis of Hartree-Fock orbitals shows that a group of neutron orbits with large negative hexadecapole moments occur together at the Fermi surface near N=100 and are responsible for the shape change.

S. K. Patra, S. Yoshida, N. Takigawa, C. R. Praharaj, and A. K. Rath

1995-04-01T23:59:59.000Z

257

Investigations of Possible Low-Level Temperature and Moisture Anomalies During the AMIE Field Campaign on Manus Island  

SciTech Connect (OSTI)

This document discusses results stemming from the investigation of near-surface temperature and moisture oddities that were brought to light as part of the Atmospheric Radiation Measurement (ARM) Madden-Julian Oscillation (MJO) Investigation Experiment (AMIE), Dynamics of the Madden-Julian Oscillation (DYNAMO), and Cooperative Indian Ocean experiment on intraseasonal variability in the Year 2011 (CINDY2011) campaigns.

Long, CN; Holdridge, DJ

2012-11-19T23:59:59.000Z

258

Exterior Insulation Finish System (EIFS) Walls ORNL provides the tools to enable industry to engineer durable, moisture-tolerant  

E-Print Network [OSTI]

Exterior Insulation Finish System (EIFS) Walls ORNL provides the tools to enable industry the insulating value of walls and the energy efficiency of buildings. The EIFS concept came to America from in both moisture control and insulating value. EIFS's are inherently superior on thermal performance

Oak Ridge National Laboratory

259

Variation in soil moisture and N availability modulates carbon and water exchange in a California grassland experiment  

SciTech Connect (OSTI)

Variability in the magnitude and timing of precipitation is predicted to change under future climate scenarios. The primary objective of this study was to understand how variation in precipitation patterns consisting of soil moisture pulses mixed with intermittent dry down events influence ecosystem gas fluxes. We characterized the effects of precipitation amount and timing, N availability, and plant community composition on whole ecosystem and leaf gas exchange in a California annual grassland mesocosm study system that allowed precise control of soil moisture conditions. Ecosystem CO2 and fluxes increased significantly with greater precipitation and were positively correlated with soil moisture. A repeated 10 day dry down period following 11 days of variable precipitation inputs strongly depressed net ecosystem CO2 exchange (NEE) across a range of season precipitation totals, and plant community types. Ecosystem respiration (Re), evapotranspiration (ET) and leaf level photosynthesis (Amax) showed greatest sensitivity to dry down periods in low precipitation plots. Nitrogen additions significantly increased NEE, Re and Amax, particularly as water availability was increased. These results demonstrate that N availability and intermittent periods of soil moisture deficit (across a wide range of cumulative season precipitation totals) strongly modulate ecosystem gas exchange.

St. Clair, S.B.; Sudderth, E.; Fischer, M.L.; Torn, M.S.; Stuart, S.; Salve, R.; Eggett, D.; Ackerly, D.

2009-03-15T23:59:59.000Z

260

A Pacific Moisture Conveyor Belt and Its Relationship to a Significant Precipitation Event in the Semiarid Southwestern United States  

Science Journals Connector (OSTI)

In this study the term moisture conveyor belt (MCB) is defined as an elongated band of enhanced poleward water vapor fluxes (WVFs) above the PBL that is rooted in the Tropics. This new terminology is illustrated through an exemplary detailed case ...

Peter Knippertz; Jonathan E. Martin

2007-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Caribbean and Pacific moisture sources on the Isthmus of Panama revealed from stalagmite and surface water d18  

E-Print Network [OSTI]

Caribbean and Pacific moisture sources on the Isthmus of Panama revealed from stalagmite values from Panama and Costa Rica. The d18 O values decrease with distance from the Caribbean Sea ocean-atmosphere phenomena on ITCZ rainfall over the Isthmus of Panama. Citation: Lachniet, M. S., W. P

Asmerom, Yemane

262

Application of Asphalt-aggregates Interfacial Energies to Evaluate Moisture-induced Damage of Warm Mix Asphalt  

Science Journals Connector (OSTI)

Abstract With increasing environmental awareness and high oil prices, use of warm mix asphalt (WMA) is gaining popularity in the asphalt industry. Different WMA technologies including use of additives to reduce the mixing and compaction temperatures are being applied. The present study uses the surface free energy (SFE) method as a mechanistic framework to evaluate the moisture susceptibility of warm mix asphalt (WMA) with Evotherm WMA-additive. The SFE components of a modified PG64-22 asphalt binder with different percentages of Evotherm and selected aggregates were measured in the laboratory. The work of adhesion, the work of debonding, and energy ratios were estimated to assess the moisture-induced damage potential of combinations of neat and Evotherm-modified asphalt binders and different aggregates. The results indicated that use of Evotherm resulted in increase in total SFE and work of adhesion and a reduction in the work of debonding, indicating a better possible aggregate-asphalt binder bond and lower moisture susceptibility potential. It is expected that the present study would be helpful in understanding the moisture-damage potential of flexible pavements constructed with WMA technologies.

Rouzbeh Ghabchi; Dharamveer Singh; Musharraf Zaman; Qingyan Tian

2013-01-01T23:59:59.000Z

263

CO2 Isotherms Measured on Moisture-Equilbrated Argonne Premium Coals at 550C and 15 Mpa  

SciTech Connect (OSTI)

Sorption isotherms, which describe the coals gas storage capacity, are important for estimating the carbon sequestration potential of coal seams. The DOE-NETL initiated a second inter-laboratory isotherm comparison of coals where CO2 sorption isotherms were collected on moisture-equilibrated coals at temperatures and pressures relevant to CO2 sequestration. Each laboratory used the same coal samples and followed the same general procedure; however, each laboratory used their own apparatus and isotherm measurement technique. This study investigated the inter-laboratory reproducibility of carbon dioxide isotherm measurements on moisture-equilibrated Argonne premium coal samples (Pocahontas #3, Illinois #6, and Beulah Zap). Six independent laboratories provided isotherm data on the three moisture-equilibrated coal samples at 55oC and pressures up to 15 MPa. Agreement among the laboratories was good up to 8 MPa. At the higher pressures, the data among the laboratories diverged significantly for two of the laboratories and coincided reasonably well for four of the laboratories. This work provides guidance for estimating the reproducibility that might be expected when comparing published sorption isotherms on moisture-equilibrated coals from different laboratories.

Goodman, A.L.

2007-05-01T23:59:59.000Z

264

2392 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 41, NO. 10, OCTOBER 2003 Soil Moisture Mapping Using ESTAR Under  

E-Print Network [OSTI]

2392 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 41, NO. 10, OCTOBER 2003 Soil of the entire region. Index Terms--Microwave, remote sensing, soil moisture. I. INTRODUCTION THE FUNDAMENTAL regional heat fluxes [15], and to validate distributed land surface models in order to study the scaling

265

Water Vapor Transport and Moisture Budget over Eastern China: Remote Forcing from the Two Types of El Nio  

Science Journals Connector (OSTI)

The water vapor transport and moisture budget over eastern China remotely forced by the cold-tongue (CT) and warm-pool (WP) El Nio show striking differences throughout their lifetime. The water vapor transport response is weak in the developing ...

Xiuzhen Li; Wen Zhou; Deliang Chen; Chongyin Li; Jie Song

2014-12-01T23:59:59.000Z

266

3D Shapes (K-2) Kindergarten: Standard 4: Shapes can be described by characteristics and position and created by  

E-Print Network [OSTI]

3D Shapes (K-2) Kindergarten: Standard 4: Shapes can be described by characteristics and position by their attributes and used to represent part/whole relationships Activity: The 3D shape lesson can be adapted Objective: The objective of this lesson is to learn about 3D shapes: their names, attributes, and 2D

267

Changes in Moisture, Protein, and Fat Content of Fish and Rice Flour Coextrudates during Single-Screw Extrusion Cooking  

SciTech Connect (OSTI)

Changes in proximate composition of fish and rice flour coextrudates like moisture, protein, and fat content were studied with respect to extrusion process v ariables like barrel temperature, x1 (100200 degrees C); screw speed, x2 (70110 rpm); fish content of the feed, x3 (545 percent); and feed moisture content, x4 (2060 percent). Experiments were conducted at five levels of the process variables based on rotatable experimental design. Response surface models (RSM) were developed that adequately described the changes in moisture, protein, and fat content of the extrudates based on the coeff icient of determination (R2) values of 0.95, 0.99, and 0.94. ANOVA analysis indicated that extrudate moisture content was influenced by x4, protein content by x1 and x3, and fat content by x3 and x4 at P < 0.001. Trends based on response surf ace plots indicated that the x1 of about 200 degrees C, x2 of about 90 rpm, x3 of about 25%, and x4 of about 20% minimized the moisture in the extrudates. Protein content was maximized at x1 of 100 degrees C, x2 > 80 rpm, x3 of about 45 percent, and x4 > 50 percent, and fat content was minimized at x1 of about 200 degrees C, x2 of about 8595 rpm, x3 < 15 percent, and x4 of about >50 percent. Optimized process variables based on a genetic algorithm (GA) for minimum moisture and fat content and maximum protein content were x1 = 199.86, x2 = 109.86, x3 = 32.45, x4 = 20.03; x1 = 199.71, x2 = 90.09, x3 = 15.27, x4 = 58.47; and x1 = 102.97, x2 = 107.67, x3 = 44.56, x4 = 59.54. The predicted values were 17.52 percent, 0.57 percent, and 46.65 percent. Based on the RSM and GA analy sis, extrudate moisture and protein content was influenced by x1, x3, and x4 and fat content by x2, x3, and x4.

Jaya Shankar Tumuluru; Shahab Sokhansanj; Sukumar Bandyopadhyay; A. S. Bawa

2013-02-01T23:59:59.000Z

268

Examination of shaped charge liner shock loading  

SciTech Connect (OSTI)

A series of experiments was conducted for the purpose of achieving a more fundamental understanding of the shaped charge liner shock loading environment. The test configuration, representing the middle portion of a shaped charge, consists of a 50 mm deep, 100 mm tall, and 2 mm thick copper plate driven by 50 mm deep, 100 mm tall, tapered thickness wedge of LX-14. An electrically driven 50 mm square flyer is used to surface initiate the base of the LX-14 causing a plane detonation wave to propagate into the explosive wedge along the liner surface. Fabry-Perot laser velocimetry measures the particle velocity time history of the plate. The CTH and DYNA2D hydrocodes are used to simulate the experiments. Calculations of the velocity profiles are compared to the experimental results. The effects of mesh density, copper material failure and strength models, and explosive detonation models are discussed.

Murphy, M.J.; Moore, T.W.; Lee, C.G.; Breithaupt, R.; Avara, G.R.

1996-07-01T23:59:59.000Z

269

What is in a pebble shape?  

E-Print Network [OSTI]

We propose to characterize the shapes of flat pebbles in terms of the statistical distribution of curvatures measured along the pebble contour. This is demonstrated for the erosion of clay pebbles in a controlled laboratory apparatus. Photographs at various stages of erosion are analyzed, and compared with two models. We find that the curvature distribution complements the usual measurement of aspect ratio, and connects naturally to erosion processes that are typically faster at protruding regions of high curvature.

D. J. Durian; H. Bideaud; P. Duringer; A. Schroder; F. Thalmann; C. M. Marques

2006-07-03T23:59:59.000Z

270

Redox Bias in Loss on Ignition Moisture Measurement for Relatively Pure Plutonium-Bearing Oxide Materials  

SciTech Connect (OSTI)

This paper evaluates potential analytical bias in application of the Loss on Ignition (LOI) technique for moisture measurement to relatively pure (plutonium assay of 80 wt.% or higher) oxides containing uranium that have been stabilized according to stabilization and storage standard DOE-STD-3013-2000 (STD- 3013). An immediate application is to Rocky Flats (RF) materials derived from high-grade metal hydriding separations subsequently treated by multiple calcination cycles. Specifically evaluated are weight changes due to oxidation/reduction of multivalent impurity oxides that could mask true moisture equivalent content measurement. Process knowledge and characterization of materials representing complex-wide materials to be stabilized and packaged according to STD-3013, and particularly for the immediate RF target stream, indicate that oxides of uranium, iron and gallium are the only potential multivalent constituents expected to be present above 0.5 wt.%. The evaluation show s that of these constituents, with few exceptions, only uranium oxides can be present at a sufficient level to produce weight gain biases significant with respect to the LOI stability test. In general, these formerly high-value, high-actinide content materials are reliably identifiable by process knowledge and measurement. Significant bias also requires that UO2 components remain largely unoxidized after calcination and are largely converted to U3O8 during LOI testing at only slightly higher temperatures. Based on well-established literature, it is judged unlikely that this set of conditions will be realized in practice. We conclude that it is very likely that LOI weight gain bias will be small for the immediate target RF oxide materials containing greater than 80 wt.% plutonium plus a much smaller uranium content. Recommended tests are in progress to confirm these expectations and to provide a more authoritative basis for bounding LOI oxidation/reduction biases. LOI bias evaluation is more difficult for lower purity materials and for fuel-type uranium-plutonium oxides. However, even in these cases testing may show that bias effects are manageable.

Eller, P. G.; Stakebake, J. L.; Cooper, T. D.

2002-02-26T23:59:59.000Z

271

Redox bias in loss of ignition moisture measurement for relatively pure plutonium-bearing oxide materials.  

SciTech Connect (OSTI)

This paper evaluates potential analytical bias in application of the Loss on Ignition (LOI) technique for moisture measurement to relatively pure (plutonium assay of 80 wt.% or higher) oxides containing uranium that have been stabilized according to stabilization and storage standard DOE-STD-3013-2000 (STD-3013). An immediate application is to Rocky Flats (RF) materials derived from highgrade metal hydriding separations subsequently treated by multiple calcination cycles. Specifically evaluated are weight changes due to oxidatiodreduction of multivalent impurity oxides that could mask true moisture equivalent content measurement. Process knowledge and characterization of materials representing complex-wide materials to be stabilized and packaged according to STD-3013, and particularly for the immediate RF target stream, indicate that oxides of uranium, iron and gallium are the only potential multivalent constituents expected to be present above 0.5 wt.%. The evaluation shows that of these constituents, with few exceptions, only uranium oxides can be present at a sufficient level to produce weight gain biases significant with respect to the LO1 stability test. In general, these formerly high-value, high-actinide content materials are reliably identifiable by process knowledge and measurement. Si&icant bias also requires that UO1 components remain largely unoxidized after calcination and are largely converted to U30s clsning LO1 testing at only slightly higher temperatures. Based on wellestablished literature, it is judged unlikely that this set of conditions will be realized in practice. We conclude that it is very likely that LO1 weight gain bias will be small for the immediate target RF oxide materials containing greater than 80 wt.% plutonium plus a much smaller uranium content. Recommended tests are in progress to confum these expectations and to provide a more authoritative basis for bounding LO1 oxidatiodreduction biases. LO1 bias evaluation is more difficult for lower purity materials and for fuel-type uranium-plutonium oxides. However, even in these cases testing may show that bias effects are manageable.

Eller, P. G. (Phillip Gary); Stakebake, J. L. (Jerry L.); Cooper, T. D. (Thruman D.)

2001-01-01T23:59:59.000Z

272

Preliminary evaluation of the effectiveness of moisture removal and energy usage in pretreatment module of waste cooking oil for biodiesel production  

Science Journals Connector (OSTI)

Waste Cooking Oil (WCO) is a plausible low cost biodiesel feedstock but it exhibits few unfavorable parameters for conversion into biodiesel. One of the parameter is the presence of high moisture content which will inhibit or retard catalyst during the acid esterification or base transesterification causing lower purity and yield of biodiesel. This will effect the post processing and escalate production cost making WCO a not favorable biodiesel feedstock. Therefore, it is important to have an effective moisture removal method to reduce the moisture content below 0.05%wt or 500 ppm in WCO for an efficient biodiesel production. In this work, the effectiveness of moisture removal and the energy usage of a newly develop innovative pretreatment module has been evaluated and reported. Results show that the pretreatment module is able to reduce up to 85% to effectively reduce the moisture content to below 500ppm of the initial moisture content of WCO and only consume 157 Wh/l energy compared to conventional heating that consume 386 Wh/l and only remove 67.6% moisture in 2 hours.

K Palanisamy; M K Idlan; N Saifudin

2013-01-01T23:59:59.000Z

273

Synopsis of recent moisture flux analyses relevant to the unsaturated zone at Area G  

SciTech Connect (OSTI)

This report summarizes selected recent analyses relevant to the assessment of the site performance for disposal facilities at Los Alamos (Area G) regarding unsaturated zone transport of moisture in liquid and vapor phases and the surface water balance. Much of the analyses methods have been reported previously but in several separate and detailed reports. These do not always reflect the overview possible with hindsight. The present report is an attempt to integrate the author`s previous results into a cohesive whole. Due to project time constraints, this report is incomplete in some area. This report first reviews the basis for the Darcy flux analyses and its inherent uncertainties, as detailed in previous reports. Results from the previous works are then reviewed and discussed and in some cases, elaborated in an attempt for clarification. New results of the Darcy Flux Analyses are presented and discussed for Area G mesa top locations, nearby canyon locations and a second mesa top location (TA46 west of Area G). Select evapotranspiration and precipitation data from TA6 are presented and discussed. The conclusions section draws a picture of the hydrology which unifies the study results reported here and in previous reports for the undisturbed and disturbed site locations.

Vold, E.

1998-03-01T23:59:59.000Z

274

Clean solid biofuel production from high moisture content waste biomass employing hydrothermal treatment  

Science Journals Connector (OSTI)

Abstract Our society currently faces three challenges, including resource depletion, waste accumulation and environmental degradation, leading to rapidly escalating raw material costs and increasingly expensive and restrictive waste disposal legislation. This work aims to produce clean solid biofuel from high moisture content waste biomass (bio-waste) with high nitrogen (N)/chlorine (Cl) content by mild hydrothermal (HT) conversion processes. The newest results are summarized and discussed in terms of the mechanical dewatering and upgrading, dechlorination, denitrification and coalification resulting from the HT pretreatment. Moreover, both the mono-combustion and co-combustion characteristics of the solid fuel are reviewed by concentrating on the pollutants emission control, especially the NO emission properties. In addition, the feasibility of this HT solid biofuel production process is also discussed in terms of Energy Balance and economic viability. As an alternative to dry combustion/dry pyrolysis/co-combustion, the HT process, combining the dehydration and decarboxylation of a biomass to raise its carbon content aiming to achieve a higher calorific value, opens up the field of potential feedstock for lignite-like solid biofuel production from a wide range of nontraditional renewable and plentiful wet agricultural residues, sludge and municipal wastes. It would contribute to a wider application of HT pretreatment bio-wastes for safe disposal and energy recycling.

Peitao Zhao; Yafei Shen; Shifu Ge; Zhenqian Chen; Kunio Yoshikawa

2014-01-01T23:59:59.000Z

275

Potential of soil moisture observations in flood modelling: Estimating initial conditions and correcting rainfall  

Science Journals Connector (OSTI)

Abstract Rainfall runoff (RR) models are fundamental tools for reducing flood hazards. Although several studies have highlighted the potential of soil moisture (SM) observations to improve flood modelling, much research has still to be done for fully exploiting the evident connection between SM and runoff. As a way of example, improving the quality of forcing data, i.e. rainfall observations, may have a great benefit in flood simulation. Such data are the main hydrological forcing of classical RR models but may suffer from poor quality and record interruption issues. This study explores the potential of using SM observations to improve rainfall observations and set a reliable initial wetness condition of the catchment for improving the capability in flood modelling. In particular, a RR model, which incorporates SM for its initialization, and an algorithm for rainfall estimation from SM observations are coupled using a simple integration method. The study carried out at the Valescure experimental catchment (France) demonstrates the high information content retained by SM for RR transformation, thus giving new possibilities for improving hydrological applications. Results show that an appropriate configuration of the two models allows obtaining improvement in flood simulation up to 15% in mean and 34% in median Nash Sutcliffe performances as well as a reduction of the median error in volume and on peak discharge of about 30% and 15%, respectively.

Christian Massari; Luca Brocca; Tommaso Moramarco; Yves Tramblay; Jean-Francois Didon Lescot

2014-01-01T23:59:59.000Z

276

Building Technologies Office: Shape-Stable and Highly Conductive  

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

Shape-Stable and Highly Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project to someone by E-mail Share Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Facebook Tweet about Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Twitter Bookmark Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Google Bookmark Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Delicious Rank Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Digg Find More places to share Building Technologies Office: Shape-Stable

277

Nicholas M. Patrikalakis Takashi Maekawa Shape Interrogationfor Computer  

E-Print Network [OSTI]

and engineering applications. For example, the hydrodynamic shape of propeller blades has an important role in marine applications, and the aerodynamic shape of turbine blades determines the performance of aircraft

Reuter, Martin

278

Supplementary Figure 1 SHAPE-MaP data analysis pipeline.  

E-Print Network [OSTI]

Supplementary Figure 1 SHAPE-MaP data analysis pipeline. Outline of software pipeline that fully.1 GHz Intel Core i7 and 16 GB RAM). This strategy is implemented in the SHAPE-MaP Folding Pipeline

Cai, Long

279

Apparatus for reducing the moisture content in combustible material by utilizing the heat from combustion of such material  

SciTech Connect (OSTI)

This patent describes apparatus for preparing moisture containing fuel material for combustion to produce heat energy and for applying the heat energy from the combustion for lowering the moisture content in the fuel material prior to combustion, the improvement comprising: boiler means for the combustion of the fuel material to produce heat energy, grinding apparatus for preparing the fuel material to produce heat energy; means for collecting prepared fuel material and for feeding the collected fuel material to the boiler means; a main gaseous fluid and fuel material conduit system; a second conduit system connecting the boiler means and the grinding apparatus to conduct heat energy to the grinding apparatus; connecting means between the returning side of the main conduit system and the boiler means for maintaining the main conduit system at a negative pressure to promote the flow of hot gaseous medium from the boiler means to the gringing apparatus.

Williams, R.M.

1992-03-17T23:59:59.000Z

280

Correlation between ERMI values and other Moisture and Mold Assessments of Homes in the American Healthy Home Survey  

SciTech Connect (OSTI)

Objective: The objective of this study was to determine the correlation between ERMI values in the HUD American Healthy Home Survey (AHHS) homes and either inspector reports or occupant assessments of mold and moisture. Methods: In the AHHS, moisture and mold were assessed by a pair of inspectors and with an occupant questionnaire. These results were compared to the results of the Environmental Relative Moldiness Index (ERMI) values for each home. Results: Homes in the highest ERMI quartile were most often in agreement with visual inspection and/or occupant assessment. However, in 52% of the fourth quartile ERMI homes, the inspector and occupant assessment did not indicate water or mold problems. Yet the concentrations of each ERMI panel mold species detected in all fourth quartile homes were statistically indistinguishable. Conclusions: About 50% of water-damaged, moldy homes were not detected by inspection or questioning of the occupant about water and mold.

Vesper, Sephen J.; McKinstry, Craig A.; Cox, David J.; DeWalt, Gary

2009-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Flexible Residential Test Facility: Impact of Infiltration and Ventilation on Measured Heating Season Energy and Moisture Levels  

SciTech Connect (OSTI)

Two identical laboratory homes designed to model existing Florida building stock were sealed and tested to 2.5 ACH50. Then, one was made leaky with 70% leakage through the attic and 30% through windows, to a tested value of 9 ACH50. Reduced energy use was measured in the tighter home (2.5 ACH50) in the range of 15% to 16.5% relative to the leaky (9 ACH50) home. Internal moisture loads resulted in higher dew points inside the tight home than the leaky home. Window condensation and mold growth occurred inside the tight home. Even cutting internal moisture gains in half to 6.05 lbs/day, the dew point of the tight home was more than 15 degrees F higher than the outside dry bulb temperature. The homes have single pane glass representative of older Central Florida homes.

Vieira, R.; Parker, D.; Fairey, P.; Sherwin, J.; Withers, C.; Hoak, D.

2013-09-01T23:59:59.000Z

282

Casting of particle-based hollow shapes  

DOE Patents [OSTI]

A method for the production of hollow articles made of a particle-based material; e.g., ceramics and sintered metals. In accordance with one aspect of the invention, a thermally settable slurry containing a relatively high concentration of the particles is coated onto a prewarmed continuous surface in a relatively thin layer so that the slurry is substantially uniformly coated on the surface. The heat of the prewarmed surface conducts to the slurry to initiate a reaction which causes the slurry to set or harden in a shape conforming to the surface. The hardened configurations may then be sintered to consolidate the particles and provide a high density product.

Menchhofer, Paul (Oak Ridge, TN)

1997-01-01T23:59:59.000Z

283

Casting of particle-based hollow shapes  

DOE Patents [OSTI]

A method for the production of hollow articles made of a particle-based material; e.g., ceramics and sintered metals. In accordance with one aspect of the invention, a thermally settable slurry containing a relatively high concentration of the particles is coated onto a prewarmed continuous surface in a relatively thin layer so that the slurry is substantially uniformly coated on the surface. The heat of the prewarmed surface conducts to the slurry to initiate a reaction which causes the slurry to set or harden in a shape conforming to the surface. The hardened configurations may then be sintered to consolidate the particles and provide a high density product.

Menchhofer, Paul (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

284

Geodesic shape regression in the framework of currents  

E-Print Network [OSTI]

Geodesic shape regression in the framework of currents James Fishbaugh1 , Marcel Prastawa1 , Guido fully parameterize the geodesic shape evolution. This is in contrast to previous shape re- gression and the corresponding re- gression function. In [5], a piecewise geodesic method has been proposed, which extends

Gerig, Guido

285

Discrete geodesic regression in shape space Benjamin Berkels1  

E-Print Network [OSTI]

Discrete geodesic regression in shape space Benjamin Berkels1 , P. Thomas Fletcher2 , Behrend Benedikt.Wirth@cims.nyu.edu Abstract. A new approach for the effective computation of geodesic re- gression curves in shape spaces is presented. Here, one asks for a geodesic curve on the shape manifold

Rumpf, Martin

286

Shape Reconstruction of 3D Bilaterally Symmetric Surfaces  

Science Journals Connector (OSTI)

The paper presents a new approach for shape recovery based on integrating geometric and photometric information. We consider 3D bilaterally symmetric objects, that is, objects which are symmetric with respect to a plane (e.g., faces), and their reconstruction ... Keywords: bilaterally symmetric objects, shape recovery, shape-from-shading, stereo

Ilan Shimshoni; Yael Moses; Michael Lindenbaum

2000-09-01T23:59:59.000Z

287

Emergence of the adult pecan weevil Curculio caryae (Horn) in relation to soil mechanical impedance and moisture  

E-Print Network [OSTI]

1981) Calvin Earl Blanchard, B. S. , Iowa State University Chairman of Advisory Committee: Dr. Marvin K. Harris The current management strategy for the pecan weevil Curculio ~car ae (Horn) is to control the adult after emergence but prior... to the drought induced soil in an attempt to measure the soil moisture and mechanical impedance threshold for pecan weevil adult emergence. ACKNOWLEDGMENTS The author would like to thank Dr, M. K. Harris for guidance and for teaching him how not to wager...

Blanchard, Calvin Earl

2012-06-07T23:59:59.000Z

288

Experimental investigation of moisture and temperature conditioning of C600/5208 graphite/epoxy composite material  

E-Print Network [OSTI]

I XPERIMENTAI INVESTIGATION OF MOI TURE AND TE11PERATURF CONDITIONING OF CGOO/5208 GRAPHITE/EPOXY COMPOSITE MATL'RIAL KENNETH AILEN GRIFGFR Su5&ritted to the Graduate College of Texa. s AQh University in partial fulfillment of the requirement... for the degree of MASTER OF SCIFNCE December 1979 Majo, Subject: Ae&ospace Engineering EXPERINENTAL INVESTIGATION OF MOISTURE AND TENPERATURE CONDITIONING OF C600/5208 GRAPHITE/EPOXY COMPOSITE HATERIAL A Thesis by -KENNETH ALLEN GRIEGER Approved...

Grieger, Kenneth Allen

2012-06-07T23:59:59.000Z

289

An examination of moisture adsorption and flake quality characteristics of grain sorghum using scarification and surfactant treatments  

E-Print Network [OSTI]

AN EXAMINATION OF MOISTURE ADSORPTION AND FLAKE QUALITY CHARACTERISTICS OF GRAIN SORGHUM USING SCARIFICATION AND SURFACTANT TREATMENTS A Professional Paper by Stephen D. Adams Submitted to the College of Agriculture of Texas ASM University... AND SURFACTANT TREATMENTS A professional Paper by Stephen D. Adams Approved as to style and content by: 1 ~fcd. . ? Chairman, Advisory Committee . D Committee Member It'-(fl: AIL/& ;. /'/0l" ~' / Co mittee Member Committee Member August, 1985...

Adams, Stephen D.

2012-06-07T23:59:59.000Z

290

3D shape reconstruction of medical images using a perspective shape-from-shading method  

Science Journals Connector (OSTI)

A 3D shape reconstruction approach for medical images using a shape-from-shading (SFS) method was proposed in this paper. A new reflectance map equation of medical images was analyzed with the assumption that the Lambertian reflectance surface was irradiated by a point light source located at the light center and the image was formed under perspective projection. The corresponding static HamiltonJacobi (HJ) equation of the reflectance map equation was established. So the shape-from-shading problem turned into solving the viscosity solution of the static HJ equation. Then with the conception of a viscosity vanishing approximation, the LaxFriedrichs fast sweeping numerical method was used to compute the viscosity solution of the HJ equation and a new iterative SFS algorithm was gained. Finally, experiments on both synthetic images and real medical images were performed to illustrate the efficiency of the proposed SFS method.

Lei Yang; Jiu-qiang Han

2008-01-01T23:59:59.000Z

291

Shape memory behavior of ultrafine grained NiTi and TiNiPd shape memory alloys  

E-Print Network [OSTI]

The cyclic instability in shape memory characteristics of NiTi-based shape memory alloys (SMAs), such as transformation temperatures, transformation and irrecoverable strains and transformation hysteresis upon thermal and mechanical cycling limits...

Kockar, Benat

2009-05-15T23:59:59.000Z

292

Convective heat and mass transfer and evolution of the moisture distribution in combined convection and radio frequency drying  

SciTech Connect (OSTI)

In a previous study (Dostie and Navarri, 1994), experiments indicated that a non-uniform moisture distribution could develop in radio frequency drying depending on the applied power and initial conditions, making the design and scale-up of such a dryer a more difficult task. Consequently, a thorough study of the combined convection and RF drying process was undertaken. Experimental results have shown that the values of the heat and mass transfer coefficients decrease with an increase in evaporation rate caused by RF energy. This effect is adequately taken into account by the boundary layer theory. Furthermore, the usual analogy between heat and mass transfer has been verified to apply in RF drying. Experiments have also shown that a different mass transfer resistance on both sides of the product should not result in non-uniform drying. However, it appears that non-uniform drying is dependent upon the initial moisture distribution and the relative intensity of heat transfer by convection and RF. It was shown that the maximum drying rate occurs at a higher average water content and that the total drying time increases with non-uniformity of the initial moisture distribution.

Poulin, A.; Dostie, M.; Kendall, J. [LTEE d`Hydro-Quebec, Shawinigan, Quebec (Canada); Proulx, P. [Univ. de Sherbrooke, Quebec (Canada)

1997-10-01T23:59:59.000Z

293

Critical importance of moisture content of the medium in alpha-amylase production by Bacillus licheniformis M27 in a solid-state fermentation system  

Science Journals Connector (OSTI)

A large reduction (about 30%78%) is observed in the production of alpha-amylase by Bacillus licheniformis...M27 in standardized wheat bran medium under solid-state fermentation when the moisture content of the m...

M. V. Ramesh; B. K. Lonsane

1990-08-01T23:59:59.000Z

294

Computer Simulation of Multi-phase Coupled Heat and Moisture Transfer in Clothing Assembly with a Phase Change Material in a Cold Environment  

Science Journals Connector (OSTI)

This paper describes a simulation of the physical processes of coupled heat and moisture transfer in a clothing assembly containing phase change material (PCM). This paper focuses on the...

Shuxiao Wang; Yi Li; Hiromi Tokura; J. Y. Hu

2006-01-01T23:59:59.000Z

295

Can ASHRAE Standard 62-1989 Requirements be Satisfied while Maintaining Moisture Control using Stock HVAC Equipment in Hot, Humid Climates?  

E-Print Network [OSTI]

increase latent loads more than sensible loads, requiring lower sensible heat ratios. Stock HVAC package units and split systems are not available with the requisite sensible heat ratios, and cannot maintain moisture control in small commercial buildings...

Turner, S. C.

1996-01-01T23:59:59.000Z

296

Building America Technology Solutions for New and Existing Homes: Impact of Infiltration and Ventilation on Measured Space Conditioning Energy and Moisture Levels in the Hot-Humid Climate  

Broader source: Energy.gov [DOE]

This project investigates the impact of air infiltration and ventilation on space cooling and moisture in residential buildings; research was conducted in two identical laboratory homes in the hot-humid climate over the cooling season.

297

Causes and Implications of Extreme Atmospheric Moisture Demand during the Record-Breaking 2011 Wildfire Season in the Southwestern United States  

Science Journals Connector (OSTI)

In 2011, exceptionally low atmospheric moisture content combined with moderately high temperatures to produce a record-high vapor pressure deficit (VPD) in the southwestern United States (SW). These conditions combined with record-low cold-season ...

A. Park Williams; Richard Seager; Max Berkelhammer; Alison K. Macalady; Michael A. Crimmins; Thomas W. Swetnam; Anna T. Trugman; Nikolaus Buenning; Natalia Hryniw; Nate G. McDowell; David Noone; Claudia I. Mora; Thom Rahn

2014-12-01T23:59:59.000Z

298

Calibration of a Neutron Hydroprobe for Moisture Measurements in Small-Diameter Steel-Cased Boreholes  

SciTech Connect (OSTI)

Computation of soil moisture content from thermalized neutron counts for the T-Farm Interim cover requires a calibration relationship but none exists for 2-in tubes. A number of calibration options are available for the neutron probe, including vendor calibration, field calibration, but none of these methods were deemed appropriate for the configuration of interest. The objective of this work was to develop a calibration relation for converting neutron counts measured in 2-in access tubes to soil water content. The calibration method chosen for this study was a computational approach using the Monte Carlo N-Particle Transport Code (MCNP). Model calibration was performed using field measurements in the Hanford calibration models with 6-in access tubes, in air and in the probe shield. The bet-fit model relating known water content to measured neutron counts was an exponential model that was essentially equivalent to that currently being used for 6-in steel cased wells. The MCNP simulations successfully predicted the neutron count rate for the neutron shield and the three calibration models for which data were collected in the field. However, predictions for air were about 65% lower than the measured counts . This discrepancy can be attributed to uncertainties in the configuration used for the air measurements. MCNP-simulated counts for the physical models were essentially equal to the measured counts with values. Accurate prediction of the response in 6-in casings in the three calibration models was motivation to predict the response in 2-in access tubes. Simulations were performed for six of the seven calibration models as well as 4 virtual models with the entire set covering a moisture range of 0 to 40%. Predicted counts for the calibration models with 2-in access tubes were 40 to 50% higher than in the 6-inch tubes. Predicted counts for water were about 60% higher in the 2-in tube than in the 6-in tube. The discrepancy between the 2-in and 6-in tube can be attributed to the smaller air gap between the probe and the 2-in access tube. The best-fit model relating volumetric water content to count ratio (CR) is of the form e^A x CR^B with A=0.3596 0.0216 and B=0.4629 0.0629 and r^2= 0.9998. It is recommended that the calibration function based on the count ratio, rather than raw counts, be used to avoid the effects of electronic noise in the probe that may arise due to the conditions at the time of measurement. These results suggest that the MCNP code can be used to extend calibrations for the neutron probe to different conditions including access tube size as well as composition without the need to construct additional physical models.

Ward, Anderson L.; Wittman, Richard S.

2009-08-01T23:59:59.000Z

299

Applied Materials Switzerland SA Formerly HCT Shaping Systems SA | Open  

Open Energy Info (EERE)

Switzerland SA Formerly HCT Shaping Systems SA Switzerland SA Formerly HCT Shaping Systems SA Jump to: navigation, search Name Applied Materials Switzerland SA (Formerly HCT Shaping Systems SA) Place Chezeaux, Switzerland Zip 1033 Product Manufacturer of wire saws for the semiconductor and photovoltaic wafer slicing industries. References Applied Materials Switzerland SA (Formerly HCT Shaping Systems SA)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Applied Materials Switzerland SA (Formerly HCT Shaping Systems SA) is a company located in Chezeaux, Switzerland . References ↑ "[ Applied Materials Switzerland SA (Formerly HCT Shaping Systems SA)]" Retrieved from "http://en.openei.org/w/index.php?title=Applied_Materials_Switzerland_SA_Formerly_HCT_Shaping_Systems_SA&oldid=342245"

300

Variational Shape Detection in Microscope Images Based on Joint Shape and Image Feature Statistics  

E-Print Network [OSTI]

inferred from training data. Varia- tional approaches to shape detection traditionally involve energies the regularization contracts the curve too much. form of these energies is E = I +R, (1) where I denotes the fit-to-data://infmath.uibk.ac.at/~matthiasf Samuel Gerber SCI Institute, University of Utah Salt Lake City, UT 84112 http

Utah, University of

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Effects of Constrained Aging on the Shape Memory Response of Nickel Rich Niti Shape Memory Alloys  

E-Print Network [OSTI]

Ni50.6Ti49.4 single and Ni52Ti48 polycrystalline shape memory alloy samples were subjected to aging under a uniaxial stress, to form a single Ni4Ti3 precipitate variant and to investigate the effects of single versus multi-variant coherent...

Barrie, Fatmata Haja

2011-02-22T23:59:59.000Z

302

Rhodium Nanoparticle Shape Dependence in the Reduction of NO by CO  

E-Print Network [OSTI]

~320 - 400C. Rhodium Nanoparticle Shape Dependence in theNano Lett. , 7 Rhodium Nanoparticle Shape Dependence in the87 (1984) 152. Rhodium Nanoparticle Shape Dependence in the

Renzas, J.R.

2010-01-01T23:59:59.000Z

303

Drop shaping by laser-pulse impact  

E-Print Network [OSTI]

We study the hydrodynamic response of a falling drop hit by a laser pulse. Combining high-speed with stroboscopic imaging we report that a millimeter-sized dyed water drop hit by a milli-Joule nanosecond laser-pulse deforms and propels forward at several meters per second, until it eventually fragments. We show that the drop motion results from the recoil momentum imparted at the drop surface by water vaporization. We measure the propulsion speed and the time-deformation law of the drop, complemented by boundary integral simulations. We explain the drop propulsion and shaping in terms of the laser pulse energy and drop surface tension. These findings are crucial for the generation of extreme ultraviolet (EUV) light in lithography machines.

Klein, Alexander L; Visser, Claas Willem; Lhuissier, Henri; Sun, Chao; Snoeijer, Jacco H; Villermaux, Emmanuel; Lohse, Detlef; Gelderblom, Hanneke

2015-01-01T23:59:59.000Z

304

Design of an Ogive-Shaped Beamstop  

SciTech Connect (OSTI)

This paper addresses the evolution, design, and development of a novel approach for stopping cw (continuous-wave), non-rastered proton beams. Capturing the beam in vacuo within a long, axisymmetric surface of revolution has the advantages of spreading the deposited energy over a large area while minimizing prompt neutron backstreaming and reducing shield size and mass. Evolving from a cylinder/cone concept, the ogive shape avoids abrupt changes in geometry that produce sharp thermal transitions, allowing the beam energy to be deposited gracefully along its surface. Thermal management at modest temperature levels is provided with a simple, one-pass countercurrent forced-convection water passage outside the ogive. Hydrophone boiling sensors provide overtemperature protection. The concept has been demonstrated under beam conditions in the CRITS (Chalk River Injector Test Stand) facility.

Van Hagan, T.H.; Doll, D.W.; Schneider, J.D.; Spinos, F.R.

1998-08-23T23:59:59.000Z

305

Electronic band?shape calculations in ammonia  

Science Journals Connector (OSTI)

The vibronic nature of the lowest energy electronic absorption and of the lowest energy photoelectron spectrum of NH3 are investigated theoretically. Two?dimensional FranckCondon factor calculations are performed and theoretical spectra are constructed including the effect of vibronic linewidth. The comparison of the experimental with theoretical spectra computed under various assumptions leads to several conclusions. The conspicuous continuum underlying the ??? transition is seen to arise from the overlapping tails of vibronic line shapes. There is no need to attribute the continuum to a second electronic transition. The ?1 NH stretching mode is excited in both the electronic absorption and photoelectron spectrum. The ? state of NH3 may be able to support two quanta of ?1. The planar NH3 + ion has a NH bond longer than in the ground state NH3 by about 0.06 .

Phaedon Avouris; A. R. Rossi; A. C. Albrecht

1981-01-01T23:59:59.000Z

306

Motion compensation method for moving pictures with binary shape  

Science Journals Connector (OSTI)

This paper describes a motion compensation method for arbitrarily shaped moving visual objects. To utilise both the inter-frame correlation and the texture-shape correlation, we use macroblock-based motion compensation for binary shape coding as well as texture coding. To efficiently achieve motion compensation for a moving binary shape, we introduce extra motion vectors for the shape coding in addition to the texture motion vectors, where the shape motion vectors are coded by referring to the texture motion vectors. The proposed method can successfully save more than 50% of the number of bits in comparison with the intra-only method. The effectiveness of the proposed method has been established through MPEG4 standardisation activity, and the proposed motion-compensation framework has been adopted by the MPEG-4 visual coding standard (ISO 14496-2).

Shinya Kadono; Choong Seng Boon; Minoru Etoh

2000-01-01T23:59:59.000Z

307

Directional emission of stadium-shaped micro-lasers  

E-Print Network [OSTI]

The far-field emission of two dimensional (2D) stadium-shaped dielectric cavities is investigated. Micro-lasers with such shape present a highly directional emission. We provide experimental evidence of the dependance of the emission directionality on the shape of the stadium, in good agreement with ray numerical simulations. We develop a simple geometrical optics model which permits to explain analytically main observed features. Wave numerical calculations confirm the results.

M. Lebental; J. -S. Lauret; J. Zyss; C. Schmit; E. Bogomolny

2006-09-01T23:59:59.000Z

308

Inexact visualization: qualitative shape representation for recognizable reconstruction  

E-Print Network [OSTI]

to which humans are able to recognize two-dimensional shapes reconstructed from a representation in our sys- tern. We also present some statistical data on some randomly generated contours and our reconstructed versions of those contours. Finally, we... with local shape features along a contour traversal. A well known example of this technique is the Freeman chain coding scheme [27]. In this method, shape is described in terms of vectors defined by a, grid plane. The vectors, when considered in order...

King, Joseph Scott

2012-06-07T23:59:59.000Z

309

Method for preparing corrosion-resistant ceramic shapes  

DOE Patents [OSTI]

Ceramic shapes having impermeable tungsten coatings can be used for containing highly corrosive molten alloys and salts. The shapes are prepared by coating damp green ceramic shapes containing a small amount of yttria with a tungsten coating slip which has been adjusted to match the shrinkage rate of the green ceramic and which will fire to a theoretical density of at least 80% to provide a impermeable coating.

Arons, Richard M. (Wheaton, IL); Dusek, Joseph T. (Downers Grove, IL)

1983-09-13T23:59:59.000Z

310

New insight into the shape coexistence and shape evolution of {sup 157}Yb  

SciTech Connect (OSTI)

High-spin states in {sup 157}Yb have been populated in the {sup 144}Sm({sup 16}O,3n){sup 157}Yb fusion-evaporation reaction at a beam energy of 85 MeV. Two rotational bands built on the {nu}f{sub 7/2} and {nu}h{sub 9/2} intrinsic states, respectively, have been established for the first time. The newly observed {nu}f{sub 7/2} band and previously known {nu}i{sub 13/2} band in {sup 157}Yb are discussed in terms of total Routhian surface methods and compared with the structures in the neighboring N = 87 isotones. The structural characters observed in {sup 157}Yb provide evidence for shape coexistence of three distinct shapes: prolate, triaxial, and oblate. At higher spins, both the {nu}f{sub 7/2} band and {nu}i{sub 13/2} band in {sup 157}Yb undergo a shape evolution with sizable alignments occurring.

Xu, C.; Hua, H.; Li, X. Q.; Meng, J.; Li, Z. H.; Xu, F. R.; Shi, Y.; Liu, H. L.; Zhang, S. Q.; Ye, Y. L.; Jiang, D. X.; Zheng, T.; Lou, J. L.; Ma, L. Y.; Wang, E. H.; Cheng, Y. Y.; He, C. [School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); Li, Z. Y. [College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001 (China); Zhu, L. H.; Wu, X. G. [China Institute of Atomic Energy, Beijing 102413 (China)

2011-01-15T23:59:59.000Z

311

CO2 CH4 flux Air temperature Soil temperature and Soil moisture, Barrow, Alaska 2013 ver. 1  

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

This dataset consists of field measurements of CO2 and CH4 flux, as well as soil properties made during 2013 in Areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska. Included are i) measurements of CO2 and CH4 flux made from June to September (ii) Calculation of corresponding Gross Primary Productivity (GPP) and CH4 exchange (transparent minus opaque) between atmosphere and the ecosystem (ii) Measurements of Los Gatos Research (LGR) chamber air temperature made from June to September (ii) measurements of surface layer depth, type of surface layer, soil temperature and soil moisture from June to September.

Margaret Torn

312

Influence of kernel size on the presence of Aspergillus flavus, aflatoxin content and moisture content in Dominican Republic grown peanuts  

E-Print Network [OSTI]

, Aflatoxin Content and Moisture Content in Dominican Republic Grown Peanuts (Auqust, 1969) Teodoro Herrera-Perez, B. S. Ingeniero Agronomo, Escuela Superior de Agricultura "Antonio Narro". Directed by: Dr. David W. Rosberg. Incidence oi As..., Dominican Republic for provid- ing the friendly environment which made this work and my stay in this c ountry !!rore enjoyable. I a!r d e;:!Iy ir d; bt-. d Lo Dr. Rafael Nirabal Roclriguc z and Nr. Tais Crouch for their friendsnip and help which fa- ci1...

Herrera-Perez, Teodoro

1969-01-01T23:59:59.000Z

313

The effects of temperature and soil moisture on the germination and emergence of three perennial warm season grasses  

E-Print Network [OSTI]

t paratxures, Ruat Narfa 4L4 not 4ifferentiate between the tesxptkratme zeglxsea isxpoaa4 ~ xn cane bluestsss, ~530 continwa4 to ~ hibit vexxy low gerxLination at all texsperatures 4-866:qersxinat hetter at 15 -25' or 20'-30 C than at the otheX(' teaperatax..., three lines within each of three species, were compared for their ability to gersLinate at various taaperature ranges and to emerge from soil sub)ected to various combinations of temperature and moisture i' ll c f the grasses germina ted and emerged...

Ohlenbusch, Paul Dietrich

2012-06-07T23:59:59.000Z

314

Objective models of compressed breast shapes undergoing mammography  

SciTech Connect (OSTI)

Purpose: To develop models of compressed breasts undergoing mammography based on objective analysis, that are capable of accurately representing breast shapes in acquired clinical images and generating new, clinically realistic shapes. Methods: An automated edge detection algorithm was used to catalogue the breast shapes of clinically acquired cranio-caudal (CC) and medio-lateral oblique (MLO) view mammograms from a large database of digital mammography images. Principal component analysis (PCA) was performed on these shapes to reduce the information contained within the shapes to a small number of linearly independent variables. The breast shape models, one of each view, were developed from the identified principal components, and their ability to reproduce the shape of breasts from an independent set of mammograms not used in the PCA, was assessed both visually and quantitatively by calculating the average distance error (ADE). Results: The PCA breast shape models of the CC and MLO mammographic views based on six principal components, in which 99.2% and 98.0%, respectively, of the total variance of the dataset is contained, were found to be able to reproduce breast shapes with strong fidelity (CC view mean ADE = 0.90 mm, MLO view mean ADE = 1.43 mm) and to generate new clinically realistic shapes. The PCA models based on fewer principal components were also successful, but to a lesser degree, as the two-component model exhibited a mean ADE = 2.99 mm for the CC view, and a mean ADE = 4.63 mm for the MLO view. The four-component models exhibited a mean ADE = 1.47 mm for the CC view and a mean ADE = 2.14 mm for the MLO view. Paired t-tests of the ADE values of each image between models showed that these differences were statistically significant (max p-value = 0.0247). Visual examination of modeled breast shapes confirmed these results. Histograms of the PCA parameters associated with the six principal components were fitted with Gaussian distributions. The six-component model was also used to generate CC and MLO view mammogram breast shapes, using the mean PCA parameter values of these distributions and randomly generated values based on the fitted Gaussian distributions, which resemble clinically encountered breasts. A spreadsheet with the data necessary to apply this model is provided as the supplementary material. Conclusions: Our PCA models of breast shapes in both mammographic views successfully reproduce analyzed breast shapes and generate new clinically relevant shapes. This work can aid in research applications which incorporate breast shape modeling, such as x-ray scatter correction, dosimetry, and image registration.

Feng, Steve Si Jia [Department of Biomedical Engineering, Georgia Institute of Technology and Emory University and Department of Radiology and Imaging Sciences, Emory University, 1701 Uppergate Drive Northeast, Suite 5018, Atlanta, Georgia 30322 (United States); Patel, Bhavika [Department of Radiology and Imaging Sciences, Emory University, 1701 Uppergate Drive Northeast, Suite 5018, Atlanta, Georgia 30322 (United States); Sechopoulos, Ioannis [Departments of Radiology and Imaging Sciences, Hematology and Medical Oncology and Winship Cancer Institute, Emory University, 1701 Uppergate Drive Northeast, Suite 5018, Atlanta, Georgia 30322 (United States)

2013-03-15T23:59:59.000Z

315

'Heart-shaped' plasmoid observed in the distant magnetotail  

SciTech Connect (OSTI)

We discovered plasmoids which have the 'heart-shape' structure in the distant magnetotail by using the Geotail data. We also showed the existence of intermediate and slow shocks in the interface of heart shape structure. The plasma sheet density just before the heart-shaped plasmoid passage appeared to be larger than that of the averaged case. These results support the idea that the plasmoid generated in the near-Earth neutral line (NENL) may evolve into the heart-shape due to the nonuniform MHD velocities in the plasma sheet.

Hirai, M.; Ida, S.; Hoshino, M. [Department of Earth and Planetary Science, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo (Japan); Kuroda, T. [Department of Astronomy, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo (Japan)

2009-06-16T23:59:59.000Z

316

Methods for Analyzing Electric Load Shape and its Variability  

SciTech Connect (OSTI)

Current methods of summarizing and analyzing electric load shape are discussed briefly and compared. Simple rules of thumb for graphical display of load shapes are suggested. We propose a set of parameters that quantitatively describe the load shape in many buildings. Using the example of a linear regression model to predict load shape from time and temperature, we show how quantities such as the load?s sensitivity to outdoor temperature, and the effectiveness of demand response (DR), can be quantified. Examples are presented using real building data.

Price, Philip

2010-05-12T23:59:59.000Z

317

Current Injection Spiral-Shaped Chaotic Microcavity Quantum Cascade Lasers  

Science Journals Connector (OSTI)

We report room temperature operation of current-injection quantum cascade lasers with spiral-shaped chaotic microresonators, capable of directional, single mode emission, operating...

Belkin, Mikhail A; Audet, Ross M; Fan, Jonathan A; Capasso, Federico; Narimanov, Evgenii; Bour, D; Corzine, S; Zhu, J; Hfler, G

318

Ames Laboratory 3D printing technology research taking shape...  

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

3D printing technology research taking shape Contacts: For Release: Sept. 23, 2014 Igor Slowing, Chemical and Biological Sciences, 515-294-1959 Laura Millsaps, Public Affairs,...

319

Scientists use plasma shaping to control turbulence in stellarators...  

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

use plasma shaping to control turbulence in stellarators By John Greenwald October 21, 2014 Tweet Widget Google Plus One Share on Facebook Magnetic field strength in a...

320

On sampling fractions and electron shower shapes  

SciTech Connect (OSTI)

We study the usage of various definitions of sampling fractions in understanding electron shower shapes in a sampling multilayer electromagnetic calorimeter. We show that the sampling fractions obtained by the conventional definition (I) of (average observed energy in layer)/(average deposited energy in layer) will not give the best energy resolution for the calorimeter. The reason for this is shown to be the presence of layer by layer correlations in an electromagnetic shower. The best resolution is obtained by minimizing the deviation from the total input energy using a least squares algorithm. The 'sampling fractions' obtained by this method (II) are shown to give the best resolution for overall energy. We further show that the method (II) sampling fractions are obtained by summing the columns of a non-local {lambda} tensor that incorporates the correlations. We establish that the sampling fractions (II) cannot be used to predict the layer by layer energies and that one needs to employ the full {lambda} tensor for this purpose. This effect is again a result of the correlations.

Peryshkin, Alexander; Raja, Rajendran; /Fermilab

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

A New Method for Shape from Focus Murali Subbarao Tae Choi  

E-Print Network [OSTI]

-from-focus method is described which is based on a new concept named Focused Image Surface (FIS). FIS of an object the shape of an object and the shape of its FIS. Therefore, the problem of shape recovery can be posed as the problem of determining the shape of the FIS. From the shape of FIS the shape of the object is easily

Subbarao, Murali "Rao"

322

Identification of Y-Shaped and O-Shaped Diffusion Regions During Magnetic Reconnection in a Laboratory Plasma  

Science Journals Connector (OSTI)

Two strikingly different shapes of diffusion regions are identified during magnetic reconnection in a magnetohydrodynamic laboratory plasma. The shapes depend on the third vector component of the reconnecting magnetic fields. Without the third component (antiparallel or null-helicity reconnection), a thin double-Yshaped diffusion region is identified. In this case, the neutral sheet current profile is accurately measured to be as narrow as the order of the ion gyro-radius. In the presence of an appreciable third component (cohelicity reconnection), an O-shaped diffusion region appears and grows into a spheromak configuration.

Masaaki Yamada; Hantao Ji; Scott Hsu; Troy Carter; Russell Kulsrud; Yasushi Ono; Francis Perkins

1997-04-21T23:59:59.000Z

323

Hygrothermal performance of EIFS-clad walls: Effect of vapor diffusion and air leakage on the drying of construction moisture [Exterior Insulation and Finish Systems  

SciTech Connect (OSTI)

Hydrothermal performance describes the response of the material layers that make up the wall to thermal and moisture loads. Modeling can be applied to determine the drying and wetting potential of walls with various initial construction moisture loads and to test alternative innovations. This paper investigates the drying performance of a particular barrier EIFS clad wall as a function of vapor diffusion control with a specific air leakage path. This investigation was conducted with constant interior temperature and relative humidity. The LATENITE model, developed at NRD, is employed in the investigation. This advanced hydrothermal model can incorporate system and sub-system performances by introducing simulated defects and wall system details derived from laboratory and field measurements. Moisture loads available to the EIFS structure originating either from the interior, the exterior or from initial construction moisture can be included. In this paper the authors present a study to determine the drying potential of a barrier EIFS clad wall for the climate of Wilmington, NC. This climate is characterized by the ASHRAE Handbook of Fundamentals as being mixed. The effect of drying and wetting by airflow was investigated by introducing airflow paths. Hydrothermal performance with three different vapor diffusion control strategies and two air leakage conditions was simulated for a period of one year. Initial oriented strand board (OSB) moisture content was assumed to be very high. The influence of rain water, solar radiation and air movement within the cavity was included in the analysis.

Karagiozis, A.N.; Salonvaara, M.H.

1999-07-01T23:59:59.000Z

324

Effects of moisture on wear of components lubricated with diesel fuel. Interim report, May 1996--September 1997  

SciTech Connect (OSTI)

The durability of some fuel injection systems on compression-ignition engines will be adversely affected by fuels of significantly low lubricity. Previous work has shown that fuel-lubricated wear is sensitive to the availability of moisture, particularly in severely refined fuels, which are designed to minimize exhaust emissions. The effects of moisture may be particularly relevant in a marine environment in which sea water is used as ballast in the fuel tanks. Traditional, less-refined fuels contain natural corrosion inhibitors that reduce oxidative wear, although alternate wear mechanisms may still affect long-term durability. However, no detailed study bas been performed to define the effects of water contamination and its relationship to fuel composition. Standardized laboratory-scale tests that show good correlation with wear in full-scale fuel injection systems for ground vehicles are available. In the present work, the standard procedures for the HFRR and BOCLE/SLBOCLE apparatus were modified to show the effects of both dissolved and emulsified water on fuel-lubricated wear. The results indicate that the lubricity of all but the most severely hydrotreated fuels are insensitive to contamination by either deionized or salt water. Moreover, the relatively short aeration period used in the ASTM D 5001 and D 6078 BOCLE test procedures has no measurable effect on water concentration in the test fuel sample.

Lacey, P.I.; Erwin, J.

1999-03-01T23:59:59.000Z

325

Swellings due to alkali-silica reaction and delayed ettringite formation: Characterisation of expansion isotropy and effect of moisture conditions  

Science Journals Connector (OSTI)

This paper investigates the effect of different conditions on the development of concrete expansions due to alkali-silica reaction (ASR), delayed ettringite formation (DEF) and their combination. The presence of products of the two reactions has been observed during structure diagnosis. The aim of this research is to study the two reactions in concretes with close mix designs but with various types of aggregate and moisture conditions. Measurements performed in the three directions of stress-free specimens showed that DEF expansions could be considered as isotropic for stress-free material. DEF expansions were largely influenced by the storage conditions (immersed in water or in sealed conditions). The volume of storage water modified the kinetics. Under sealed conditions, no expansions were measured for mortar containing non-reactive aggregate, while small positive strains were obtained for mortar containing reactive aggregate. In all cases, new water supply caused fast, large expansions. The different effects of alkali leaching and moisture conditions on DEF and ASR expansions are discussed.

Hassina Bouzabata; Stphane Multon; Alain Sellier; Hacne Houari

2012-01-01T23:59:59.000Z

326

Genome Organization and Gene Expression Shape the Transposable Element Distribution  

E-Print Network [OSTI]

Genome Organization and Gene Expression Shape the Transposable Element Distribution The distribution of transposable elements (TEs) in a genome reflects a balance between insertion rate and selection shaping the organization of genomes. Past research has shown that TEs tend to accumulate in genomic

Alvarez, Nadir

327

Single-and Multi-Point Aerodynamic Shape Optimization  

E-Print Network [OSTI]

Single- and Multi-Point Aerodynamic Shape Optimization Using A Parallel Newton-Krylov Approach, Ontario, M3H 5T6, Canada A Newton-Krylov algorithm for aerodynamic shape optimization in three dimensions the capabilities and efficiency of the approach. I. Introduction In the aerodynamic design of aircraft, there have

Zingg, David W.

328

Strategies for Solving High-Fidelity Aerodynamic Shape Optimization Problems  

E-Print Network [OSTI]

Strategies for Solving High-Fidelity Aerodynamic Shape Optimization Problems Zhoujie Lyu Aerodynamic shape optimization based on high-fidelity models is a computational intensive endeavor. The techniques are tested using the Common Research Model wing benchmark defined by the Aerodynamic Design

Papalambros, Panos

329

Aerodynamic Shape Optimization for Aircraft Design Antony Jameson  

E-Print Network [OSTI]

Aerodynamic Shape Optimization for Aircraft Design Antony Jameson Department of Aeronautics September 6-10, 2004 c A. Jameson 2004 Stanford University, Stanford, CA 1/55 Aerodynamic Shape Optimization for Aircraft Design #12;#12; Aerodynamic Design Tradeoffs A good first estimate of performance is provided

Stanford University

330

An Evolutionary Geometry Parametrization for Aerodynamic Shape Optimization  

E-Print Network [OSTI]

An Evolutionary Geometry Parametrization for Aerodynamic Shape Optimization Xiaocong Han and David, M3H 5T6, Canada An evolutionary geometry parametrization is presented for aerodynamic shape optimiza, unconventional aerodynamic configurations. Based on improvements in computational fluid dynamics (CFD) and high

Zingg, David W.

331

INTERSPECIFIC VARIATION IN FRUIT SHAPE: ALLOMETRY, PHYLOGENY, AND ADAPTATION TO  

E-Print Network [OSTI]

INTERSPECIFIC VARIATION IN FRUIT SHAPE: ALLOMETRY, PHYLOGENY, AND ADAPTATION TO DISPERSAL AGENTS' 4 . Investigations on fruit and fruiting characteristics of animal-dispersed. fleshy- fruited of interspecific variation in fruit shape (as assessed bq length and width) among vertebrate-dispersed plants

Herrera, Carlos M.

332

Performance Measures For Input Shaping and Command Generation  

E-Print Network [OSTI]

Performance Measures For Input Shaping and Command Generation Kris Kozak Department of Precision performance measures for input shaping and command generation have appeared in the literature, but very rarely have these measures been critically evaluated or thoroughly discussed. In this paper we review

Singhose, William

333

Heart-shaped bubbles rising in anisotropic liquids Chunfeng Zhou  

E-Print Network [OSTI]

Heart-shaped bubbles rising in anisotropic liquids Chunfeng Zhou Department of Chemical of an unusual inverted-heart shape for bubbles rising in an anisotropic micellar solution. We explain the bubble heart or a spade a . The upper sur- face has sloped shoulders that join in a point. The bottom

Feng, James J.

334

Study of CMOS APS Responsivity Enhancement: Ring-Shaped Photodiode  

E-Print Network [OSTI]

Study of CMOS APS Responsivity Enhancement: Ring-Shaped Photodiode Tatiana Danov, Igor Shcherback obtained from various ring-shaped pixel photodiodes with different inner radius, implemented in a standard illumination. We show that the photodiodes with a small ring-opening exhibit better sensitivity in the blue

335

Shape Recovery of Viscoelastic Deployable Structures and Sergio Pellegrino  

E-Print Network [OSTI]

and opposite sense folding. I. Introduction Deployable structures made of thin carbon fiber reinforced polymerShape Recovery of Viscoelastic Deployable Structures Kawai Kwok and Sergio Pellegrino California Institute of Technology, Pasadena, CA 91125 The paper investigates the shape recovery behavior of a simple

Pellegrino, Sergio

336

IEA Workshop 59 Shape and Aspect Ratio Optimization for  

E-Print Network [OSTI]

IEA Workshop 59 Shape and Aspect Ratio Optimization for High Beta, Steady-State Tokamak SCOPE tokamak DEMO reactor. Many present tokamaks are addressing such operation for ITER and DEMO. Shape and aspect ratio is particularly important for achieving high beta and also for the optimization of edge

337

PATCH SHAPE, CONNECTIVITY, AND FORAGING BY OLDFIELD MICE (PEROMYSCUS POLIONOTUS)  

E-Print Network [OSTI]

PATCH SHAPE, CONNECTIVITY, AND FORAGING BY OLDFIELD MICE (PEROMYSCUS POLIONOTUS) JOHN L. ORROCK, USA We examined how corridors and patch shape affect foraging by the oldfield mouse (Peromyscus polionotus) by deploying foraging trays and live traps in experimental landscapes with 3 different patch

Haddad, Nick

338

Custom Spectral Shaping for EMI Reduction in Electronic Ballasts  

E-Print Network [OSTI]

modulating waveforms, for custom spectral shaping of the fundamental harmonic of electronic ballastsCustom Spectral Shaping for EMI Reduction in Electronic Ballasts Sandra Johnson, Yan Yin, Regan Zane Colorado Power Electronics Center University of Colorado at Boulder Boulder, Colorado 80309

339

Impact of Infiltration and Ventilation on Measured Space Conditioning Energy and Moisture Levels in the Hot-Humid Climate, Cocoa, Florida (Fact Sheet)  

SciTech Connect (OSTI)

Air infiltration and ventilation in residential buildings is a very large part of the heating loads, but empirical data regarding the impact on space cooling has been lacking. Moreover, there has been little data on how building tightness might relate to building interior moisture levels in homes in a hot and humid climate. To address this need, BA-PIRC has conducted research to assess the moisture and cooling load impacts of airtightness and mechanical ventilation in two identical laboratory homes in the hot-humid climate over the cooling season. ?

Not Available

2014-04-01T23:59:59.000Z

340

Gradients of soil salinity and moisture, and plant distribution, in a Mediterranean semiarid saline watershed: a model of soilplant relationships for contributing to the management  

Science Journals Connector (OSTI)

Abstract This study reports the soilplant relationships within a protected landscape in semiarid SE Spain that includes salt marshes and temporary streams and that is affected by agricultural water leaching. The main objective was to establish a conceptual model in order to use vegetation as bioindicator of soil conditions. With this model, environmental changes based on the observation of vegetation could be detectable, allowing the prevention of environmental impacts and the improvement of the environmental management of the studied area. Eight sampling stations with a total of 39 plots were established for the sampling of vegetation (floristic composition and species abundance) and soil (moisture, pH, redox potential, electrical conductivity and soluble ions). Multivariate analysis showed that vegetation was closely related to soil moisture and salinity. The soils colonised by steppe grasses (dominated by Lygeum spartum) and halophilus and halonitrophilus shrubs (dominated by Suaeda vera and Limonium spp.) were the driest (moisture saline (EC saline and wettest soils. P. australis reached maximum cover at EC values ~40dS m?1 and soil moisture ~30% and consistently appeared on those soils with lower seasonal contrasts of moisture and salinity. Between 30 and 80dSm?1 of soil salinity, S. fruticosa reached maximum cover (~100%) while A. macrostachyum did not exceed ~80%. Outside this range of salinity S. fruticosa declined (cover ~40%. In addition, A. macrostachyum grew in soils with stronger seasonal changes of moisture and salinity. Based on the model established, if an expansion of P. australis is detected, an increase in soil moisture and a decrease in soil salinity during the year could be inferred. These changes could be due to an increased entry of effluents of fresh and/or brackish water from agricultural areas. In turn, an increase in the cover of A. macrostachyum would indicate higher soil salinity, which could be a consequence of an increase in the evaporation rates (due to rising temperatures) and a decrease in rainfall (predicted consequences of global warming). The expansion of S. fruticosa would be favoured under relatively high soil salinity conditions (which limit P. australis expansion) jointly with high soil moisture, without strong seasonal changes (which limit A. macrostachyum expansion). Our results support the role of vegetation as bioindicator of disturbances and the use of soilplant relationships models to improve the environmental management of saline ecosystems.

M.N. Gonzlez-Alcaraz; F.J. Jimnez-Crceles; Y. lvarez; J. lvarez-Rogel

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

ConventionConventionConventionConvention InformaInformaInformaInformation Guidetion Guidetion Guidetion Guide International Convention on Shapes and SolidsInternational Convention on Shapes and SolidsInternational Convention on Shapes and SolidsInternatio  

E-Print Network [OSTI]

Guidetion Guide International Convention on Shapes and SolidsInternational Convention on Shapes and SolidsInternational Convention on Shapes and SolidsInternational Convention on Shapes and Solids 13131313----17 June 2005, Massachusetts Institute of Technology, Cambridge, MA, USA #12;Information Guide International Convention

Reuter, Martin

342

Flow shaping using three-dimensional microscale gas discharge  

SciTech Connect (OSTI)

We introduce a flow shaping mechanism using surface compliant microscale gas discharge. A three-dimensional finite element-based multiscale ionized gas flow code is utilized to analyze charge separation, potential distribution, and flow inducement mechanism. For the case of quiescent flow, a horseshoe-shaped plasma generator is introduced. Due to its unusual shape, the three-dimensional electric force excites a pinching effect on the fluid inside selectively powered electrode arc. Such effect is capable of tripping the flow-ejecting fluid normal to the plane of the actuator and thus can be very useful for many applications.

Wang, C.-C.; Roy, Subrata [Department of Mechanical and Aerospace Engineering, Computational Plasma Dynamics Laboratory and Test Facility, University of Florida, Gainesville, Florida 32611-6300 (United States)

2009-08-24T23:59:59.000Z

343

Geologic factors in coal mine roof stability--a progress report. Information circular/1984. [Effects of moisture  

SciTech Connect (OSTI)

This report summarizes 10 selected Bureau of Mines research contract reports produced from 1970 to 1980 which consist largely of geologic studies of coal mine roof support problems. Significant highlights from the contract final reports are discussed and presented in practical terms. The selected reports focus on the Appalachian and Illinois coal mining regions. In the Appalachian coal region, two geologic structures, roof rolls and slickensides, predominate over all structures as features that directly contribute to roof falls. Studies of these and other structures are reviewed, and improved methods of utilizing drill core and core logs to prepare hazard maps are presented. Among the reports described are several on the weakening effects of moisture on shale roof, as determined from both laboratory and underground measurements, and an assessment of air tempering as a humidity-control method. Also summarized are findings concerning the time lapse between roof exposure and permanent support installation as a factor in the effectiveness of roof bolting.

Moebs, N.N.; Stateham, R.M.

1984-01-01T23:59:59.000Z

344

Euler-Euler simulation of wood chip combustion on a grate - effect of fuel moisture content and full scale application  

Science Journals Connector (OSTI)

Nowadays, it is common practice to perform CFD calculations for optimisation purposes of technical biomass combustion applications. A numerical model for wood chip combustion on grate firing arrangements has been developed. The model is based on an Euler-Euler approach, enabling a detailed multiphase description of the combustion chamber in terms of flow, turbulence and heat transfer. The model explicitly accounts for interactions between bed and freeboard region and comprises a global description of the whole incineration process associated with wood combustion. For validation purposes, the effect of fuel moisture content in a 240 kWth test facility has been observed experimentally and the results are opposed to the model predictions. Additionally, measurements within a 58 MWth full scale grate firing system have been conducted and the scalability of the numerical model towards industrial applications is investigated.

D. Kurz; U. Schnell; G. Scheffknecht

2013-01-01T23:59:59.000Z

345

Surface shape resonances and surface plasmon polariton excitations in bottle-shaped metallic gratings  

Science Journals Connector (OSTI)

We study surface plasmon polariton excitations and surface shape resonances in a lossy metallic grating with bivalued cavities. The modal formalism is used to solve the diffraction problem for the infinite grating and the homogeneous problem for a single cavity in a plane surface. Both polarization modes are considered. We provide curves of reflected efficiency versus wavelength as well as near-field plots. The resonances are identified as dips in the reflected efficiency, which imply significant power absorptions. Results for various depths of the cavities and for several angles of incidence are shown, where the different types of resonant behavior can be appreciated. Particular attention is paid to the changes introduced by the finite conductivity of the metal in relation to the results obtained for a perfect conductor.

Diana C. Skigin and Ricardo A. Depine

2001-03-27T23:59:59.000Z

346

Chai, S.S., Veenendaal,B., West G. and J.P. Walker (2009). Input Parameter Selection for Soil Moisture Retrieval Using an Artificial Neural Network. In: Ostendorf, B., Baldock, P., Bruce, D., Burdett, M. and P. Corcoran (eds.),  

E-Print Network [OSTI]

Moisture Retrieval Using an Artificial Neural Network. In: Ostendorf, B., Baldock, P., Bruce, D., Burdett-0-9581366-8-6. INPUT PARAMETERS SELECTION FOR SOIL MOISTURE RETRIEVAL USING AN ARTIFICIAL NEURAL NETWORK Soo-See Chai 1-linear and ill-posed problem. Artificial Neural Networks (ANNs) have been demonstrated to be good solutions

Walker, Jeff

347

Elasticplastic modelling of shaped charge jet penetration  

Science Journals Connector (OSTI)

...of shaped charge jet penetration Roman Novokshanov...modelling of high-rate penetration of a metal target by...best studied is that of penetration of an inviscid liquid...cavitating flow balancing the rate of change of momentum...

2006-01-01T23:59:59.000Z

348

Luminescent solar concentrators: effects of shape on efficiency  

Science Journals Connector (OSTI)

The effects of shape and photovoltaic cell placement on efficiency are studied for luminescent solar concentrators. The mean path length of light rays is found to be a poor measure of...

Loh, Eugene; Scalapino, Douglas J

1986-01-01T23:59:59.000Z

349

1999 International Symposium on Robotics Research, Snowbird. Shape and Enlightenment  

E-Print Network [OSTI]

1999 International Symposium on Robotics Research, Snowbird. Shape and Enlightenment hand, vision-based robot systems can ex- ploit this naturally occurring variability to better un that they have much broader applicability. For example, within industrial and ser- vice robotics

Jaffe, Jules

350

Optimal control of plate shape with incompatible strain fields  

E-Print Network [OSTI]

A flat plate can bend into a curved surface if it experiences an inhomogeneous growth field. In this article a method is described that numerically determines the optimal growth field giving rise to an arbitrary target shape, optimizing for closeness to the target shape and for growth field smoothness. Numerical solutions are presented, for the full non-symmetric case as well as for simplified one-dimensional and axisymmetric geometries. This system can also be solved semi-analytically by positing an ansatz for the deformation and growth fields in a circular disk with given thickness profile. Paraboloidal, cylindrical and saddle-shaped target shapes are presented as examples, of which the last two exemplify a soft mode arising from a non-axisymmetric deformation of a structure with axisymmetric material properties.

Gareth Wyn Jones; L. Mahadevan

2014-12-22T23:59:59.000Z

351

Ames Laboratory 3D printing technology research taking shape...  

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

3D printing technology research taking shape Insider Scientists at the U.S. Department of Energy's Ames Laboratory see amazing potential in 3D printing and additive manufacturing,...

352

Boojums and the Shapes of Domains in Monolayer Films  

E-Print Network [OSTI]

Domains in Langmuir monolayers support a texture that is the two-dimensional version of the feature known as a boojum. Such a texture has a quantifiable effect on the shape of the domain with which it is associated. The most noticeable consequence is a cusp-like feature on the domain boundary. We report the results of an experimental and theoretical investigation of the shape of a domain in a Langmuir monolayer. A further aspect of the investigation is the study of the shape of a ``bubble'' of gas-like phase in such a monolayer. This structure supports a texture having the form of an inverse boojum. The distortion of a bubble resulting from this texture is also studied. The correspondence between theory and experiment, while not perfect, indicates that a qualitative understanding of the relationship between textures and domain shapes has been achieved.

Jiyu Fang; Ellis Teer; Charles M. Knobler; Kok-Kiong Loh; Joseph Rudnick

1997-01-08T23:59:59.000Z

353

Teaching Shape Recognition to Students with Significant Intellectual Disabilities  

E-Print Network [OSTI]

disabilities, need mathematics skills to lead productive and independent lives. Geometry skills help students make sense of the world around them. Mastery of shape recognition is a beginning geometry skill that is necessary for progressing to more advanced...

Lyon, Kristin Joannou

2014-05-31T23:59:59.000Z

354

Design and characterization of acoustic pulse shape memory alloy actuators  

E-Print Network [OSTI]

Single crystal Ni-Mn-Ga ferromagnetic shape memory alloys (FSMAs) are active materials which produce strain when a magnetic field is applied. The large saturation strain (6%) of Ni-Mn-Ga, and material energy density ...

Chambers, Joshua Michael

2005-01-01T23:59:59.000Z

355

Cone-shaped beams in selective laser cladding  

Science Journals Connector (OSTI)

A new method of radiation energy introduction into a powder jet for selective laser cladding (SLC) technology is presented, which is ... based on the unique properties of cone-shaped laser beams. The parameters o...

Yu. A. Chivel

2005-01-01T23:59:59.000Z

356

Optimal shape and motion of undulatory swimming organisms  

E-Print Network [OSTI]

Undulatory swimming animals exhibit diverse ranges of body shapes and motion patterns and are often considered as having superior locomotory performance. The extent to which morphological traits of swimming animals have ...

Tokic, Grgur

357

A Numerical Model for the Equilibrium Shape of Electrified Raindrops  

Science Journals Connector (OSTI)

The model Beard Chuang, using the differential form of Laplace's formula, has been extended to raindrop shapes under the influence of vertical electric fields and drop charges. A finite volume method was used with a boundary-fitted coordinate ...

Catherine C. Chuang; Kenneth V. Beard

1990-06-01T23:59:59.000Z

358

Anatomic Segmentation of Statistical Shape Models Max Hermann1  

E-Print Network [OSTI]

-289, 2010. [4] M. Hermann, A.C. Schunke, T. Schultz, R. Klein: "A Visual Analytics Approach to StudyAnatomic Segmentation of Statistical Shape Models Max Hermann1 , Anja C. Schunke2 , Reinhard Klein1

Eckmiller, Rolf

359

Left-Ventricular Shape Determines Intramyocardial Stroke Work Distribution  

Science Journals Connector (OSTI)

The left-ventricle often undergoes large shape changes in the remodelling process, which is now considered to be an important indication of disease progression. Therefore, the influence on intramyocardial work...

Hon Fai Choi; Frank E. Rademakers

2011-01-01T23:59:59.000Z

360

Left-ventricular shape determines intramyocardial stroke work distribution  

Science Journals Connector (OSTI)

The left-ventricle often undergoes large shape changes in the remodelling process, which is now considered to be an important indication of disease progression. Therefore, the influence on intramyocardial work load distribution was examined in a finite-element ...

Hon Fai Choi; Frank E. Rademakers; Piet Claus

2011-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Pit Shape Dependence of Super-RENS ROM Disc  

Science Journals Connector (OSTI)

We propose a fabrication method of Super-RENS ROM disc using PtOx thermal decomposition. The pit shape dependence was also investigated by fabricating elliptical pits. It...

Kurihara, Kazuma; Shima, Takayuki; Nakano, Takashi; Kuwahara, Masashi; Tominaga, Junji

362

Multi-range force sensors utilizing shape memory alloys  

DOE Patents [OSTI]

The present invention provides a multi-range force sensor comprising a load cell made of a shape memory alloy, a strain sensing system, a temperature modulating system, and a temperature monitoring system. The ability of the force sensor to measure contact forces in multiple ranges is effected by the change in temperature of the shape memory alloy. The heating and cooling system functions to place the shape memory alloy of the load cell in either a low temperature, low strength phase for measuring small contact forces, or a high temperature, high strength phase for measuring large contact forces. Once the load cell is in the desired phase, the strain sensing system is utilized to obtain the applied contact force. The temperature monitoring system is utilized to ensure that the shape memory alloy is in one phase or the other.

Varma, Venugopal K. (Knoxville, TN)

2003-04-15T23:59:59.000Z

363

Generation of Gradients Having Complex Shapes Using Microfluidic Networks  

E-Print Network [OSTI]

Generation of Gradients Having Complex Shapes Using Microfluidic Networks Stephan K. W. Dertinger, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 This paper describes the generation each carrying different concentrations of substances laminarly and side-by-side generated step

Prentiss, Mara

364

Shape Recognition in Support of Simplification of Buildings  

Science Journals Connector (OSTI)

Shape recognition is fundamental and important in spatial data-mining and in spatial cognition. In small-scale map generalization, the simplification of buildings takes an important place. In this paper ... selec...

Pengcheng Liu; Chang Li; Yong Zhou

2012-01-01T23:59:59.000Z

365

Argonne CNM Highlight: Understanding Nanocrystal Shapes through Simulation  

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

Understanding Nanocrystal Shapes through Simulation Understanding Nanocrystal Shapes through Simulation A. Barnard Anatase Nanocrystals Nanoparticles of various materials have been found to possess a number of remarkable properties that depend upon their finite size. In many cases however, these desirable properties may also be a function of the morphology of the nanoparticle. Experimental evidence suggests that the shape of nanomaterials is affected by such factors as size, temperature, pressure, and the chemical environment. Observations of this type invite the question: Can the shape of nanoparticles be controlled, or do thermodynamic processes rule at the nanoscale? Researchers at the Virtual Fab Lab are using theoretical models and high-performance computing to investigate the physical principles responsible for the shape of nanocrystals and ways in which they may be manipulated. Calculations involving isolated nanoparticles (even small structures such as the anatase nanocrystals shown here) can be very computationally intensive, especially when trying to simulate the effects of particles in solution. It may also be difficult to determine whether the results of such calculations are archetypal or are representative only of the particular prototype structure. By developing a new theory for the phase stability of nanomaterials as a function of size and shape, we can eliminate much of this ambiguity. Ab initio computational methods are used to obtain a set of key parameters for the model that may then be used to examine how shape affects processes such as phase transitions. Alternatively, the model may be used to determine the experimental conditions necessary to achieve a particular shape that may be required for a specific application.

366

Dynamical density functional theory for colloidal particles with arbitrary shape  

E-Print Network [OSTI]

Starting from the many-particle Smoluchowski equation, we derive dynamical density functional theory for Brownian particles with an arbitrary shape. Both passive and active (self-propelled) particles are considered. The resulting theory constitutes a microscopic framework to explore the collective dynamical behavior of biaxial particles in nonequilibrium. For spherical and uniaxial particles, earlier derived dynamical density functional theories are recovered as special cases. Our study is motivated by recent experimental progress in preparing colloidal particles with many different biaxial shapes.

Raphael Wittkowski; Hartmut Lwen

2011-06-12T23:59:59.000Z

367

Industrial Load Shaping: A Utility Strategy to Deal with Competition  

E-Print Network [OSTI]

INDUSTRIAL LOAD SHAPING: A UTILITY STRATEGY TO DEAL WITH COMPETITION DONALD BULES BULES AND ASSOCIATES SAN FRANCISCO, ABSTRACT In recent years competition from various sources such as cogeneration and bypass has led many utilities... to refocus attention on their large industrial customers. Industrial load shaping is a customized program involving cost-effective process modifications and operational changes which result in a restructuring of the electric load profile of individual...

Bules, D.

368

Heart - Shaped Nuclei: Condensation of Rotational Aligned Octupole Phonons  

E-Print Network [OSTI]

The strong octupole correlations in the mass region $A\\approx 226$ are interpreted as rotation-induced condensation of octupole phonons having their angular momentum aligned with the rotational axis. Discrete phonon energy and parity conservation generate oscillations of the energy difference between the lowest rotational bands with positive and negative parity. Anharmonicities tend to synchronize the the rotation of the condensate and the quadrupole shape of the nucleus forming a rotating heart shape.

S. Frauendorf

2007-10-24T23:59:59.000Z

369

Ultra-relativistic nuclear collisions: event shape engineering  

E-Print Network [OSTI]

The evolution of the system created in a high energy nuclear collision is very sensitive to the fluctuations in the initial geometry of the system. In this letter we show how one can utilize these large fluctuations to select events corresponding to a specific initial shape. Such an "event shape engineering" opens many new possibilities in quantitative test of the theory of high energy nuclear collisions and understanding the properties of high density hot QCD matter.

Jurgen Schukraft; Anthony Timmins; Sergei A. Voloshin

2012-08-22T23:59:59.000Z

370

Moisture determination and structure investigation of native and dried Argonne premium coals. A hydrogen-1 solid-state NMR relaxation study  

Science Journals Connector (OSTI)

Moisture determination and structure investigation of native and dried Argonne premium coals. ... This work has been undertaken aiming to estimate the size of pores in moist coals on the basis of the nuclear magnetic resonance relaxation characteristics of water sorbed in the pores as the molecular probe. ...

X. Yang; A. R. Garcia; J. W. Larsen; B. G. Silbernagel

1992-09-01T23:59:59.000Z

371

A MODELING APPROACH TO ESTIMATING SNOW COVER DEPLETION AND SOIL MOISTURE RECHARGE IN A SEMI-ARID CLIMATE AT TWO NASA CLPX  

E-Print Network [OSTI]

-ARID CLIMATE AT TWO NASA CLPX SITES Submitted by Julie D. Holcombe Department of Forest, Rangeland AT TWO NASA CLPX SITES BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE RECHARGE IN A SEMI-ARID CLIMATE AT TWO NASA CLPX SITES Snow cover depletion and soil moisture recharge

MacDonald, Lee

372

Pneumatic conveying of coal and coal-limestone mixtures as applied to atmospheric fluidized-bed combustion. [Effects of moisture, velocity, particle size  

SciTech Connect (OSTI)

Pneumatic conveying experiments with coal and coal-limestone mixtures were performed on a conveying system designed to represent the feed lines in the Tennessee Valley Authority 20 MW atmospheric fluidized bed combustor. The experimental conditions were chosen to cover the anticipated combustor operating ranges. The results have led to a fundamental understanding of the operating limits associated with coal surface moisture, air velocity, coal and limestone fines, solids to air ratio, and limestone to coal ratio. Coal surface moisture was found to be the most important parameter affecting handling and transport. Specific upper limits for surface moisture were established. It was demonstrated that addition of dry limestone can reduce the conveying problems associated with wet coal. The air velocities causing saltation and surge flow were determined for a variety of conveying conditions. These velocities were related qualitatively to solids to air ratio, particle size, and surface moisture. Conveying pressure drop was also measured for a variety of conditions. In the absence of saltation, the horizontal, frictional pressure drop was only a function of the solids to air ratio and the air flow conditions. Comparison of the ORNL pressure drop data with the results of other investigators had led to the conclusion that there are two basic modes of flow in dilute-phase conveying; a primarily viscous mode and a primarily inertial mode. A general pressure drop model has been developed for the inertial mode.

Daw, C S; Thomas, J F

1982-01-01T23:59:59.000Z

373

Moisture Transport and Other Hydrometeorological Features Associated with the Severe 2000/01 Drought over the Western and Central Canadian Prairies  

Science Journals Connector (OSTI)

The 54-yr (19482001) NCEPNCAR reanalysis data as well as other information were used to study the moisture transport and associated circulation features for the severe 2000/01 drought over the western and central Canadian Prairies. Most of the ...

Jinliang Liu; Ronald E. Stewart; Kit K. Szeto

2004-01-01T23:59:59.000Z

374

Limiting shapes of Ising droplets, Ising fingers, and Ising solitons  

Science Journals Connector (OSTI)

We examine the evolution of an Ising ferromagnet endowed with zero-temperature single spin-flip dynamics. A large droplet of one phase in the sea of the opposite phase eventually disappears. An interesting behavior occurs in the intermediate regime when the droplet is still very large compared to the lattice spacing, but already very small compared to the initial size. In this regime the shape of the droplet is essentially deterministic (fluctuations are negligible in comparison with characteristic size). In two dimensions the shape is also universal, that is, independent of the initial shape. We analytically determine the limiting shape of the Ising droplet on the square lattice. When the initial state is a semi-infinite stripe of one phase in the sea of the opposite phase, it evolves into a finger which translates along its axis. We determine the limiting shape and the velocity of the Ising finger on the square lattice. An analog of the Ising finger on the cubic lattice is the translating Ising soliton. We show that far away from the tip, the cross-section of the Ising soliton coincides with the limiting shape of the two-dimensional Ising droplet and we determine a relation between the cross-section area, the distance from the tip, and the velocity of the soliton.

P. L. Krapivsky

2012-01-31T23:59:59.000Z

375

Computational Thermodynamics of CoNiGa High Temperature Shape Memory Alloys  

E-Print Network [OSTI]

Shape Memory Alloys (SMAs) are advanced materials with interesting properties such as pseudoelasticity (PE) and the shape memory effect (SME). Recently, the CoNiGa system has emerged as the basis for very promising High Temperature Shape Memory...

Chari, Arpita

2012-10-19T23:59:59.000Z

376

An experimental investigation of the energy-attenuation capabilities of various-shaped compliable metal structures  

E-Print Network [OSTI]

~ Redesigned Drop Carriage 18 5 ~ Acceleration versus Time Curve for Compliable Structure Shape D (Al 6061- T6). 28 Acceleration versus Time Curve for Compliable Structure Shape D (Al 2024 ? T3). 28 7 ~ Acceleration versus Time Curve for Compliable... Structure Shape H (Al 2024 - T3). . 29 8. Acceleration versus Time Curve for Compliable Structure Shape G (Al 2024 - T3) . . 29 LIST OF FIGURES Figure Page Representative Shape of Ideal Acceleration versus Time Curve 2 \\ Compliable Structures - Shape...

Harding, Lynn Blackmore

1964-01-01T23:59:59.000Z

377

E-Print Network 3.0 - aerodynamic shape optimization Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: aerodynamic shape optimization Page: << < 1 2 3 4 5 > >> 1 Aerodynamic shape and planform...

378

RUBBLE-PILE RESHAPING REPRODUCES OVERALL ASTEROID SHAPES  

SciTech Connect (OSTI)

There have been attempts in the past to fit the observed bulk shapes (axial ratios) of asteroids to theoretical equilibrium figures for fluids, but these attempts have not been successful in many cases, evidently because asteroids are not fluid bodies. So far, however, the observed distribution of asteroid macroscopic shapes has never been attributed to a common cause. Here, we show that a general mechanism exists, capable of producing the observed shape distribution. We base our approach on the idea that aggregates of coherent blocks held together mostly by gravity (gravitational aggregates) can change their shape under the action of external factors, such as minor collisions, that break the interlocking of the constituent blocks, thus allowing them to asymptotically evolve toward fluid equilibrium. We show by numerical simulations that this behavior can produce a shape distribution compatible with the observations. Our results are shown to be consistent with a simple interpretation based on the topology of the potential energy field for rotating bodies. Also, they suggest that most asteroids have an internal structure that is at least partially fragmented, consistent with constraints derived from large asteroids (diameters >100 km) with satellites.

Tanga, P.; Comito, C.; Walsh, K. J.; Delbo, M. [UMR 6202 Cassiopee, University of Nice-Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, BP 4229, 06304 Nice Cedex 4 (France); Paolicchi, P. [Dipartimento di fisica, Universita di Pisa, Largo Pontecorvo 3, 56127 Pisa (Italy); Hestroffer, D. [Institut de Mecanique Celeste et de Calcul des Ephemerides (IMCCE), CNRS, Observatoire de Paris, 75014 Paris (France); Cellino, A.; Dell'Oro, A. [INAF/Osservatorio Astronomico di Torino, Via Osservatorio 20, 10122 Pino Torinese (Italy); Richardson, D. C. [Department of Astronomy, University of Maryland, College Park, MD 20742-2421 (United States)

2009-11-20T23:59:59.000Z

379

Evaluation of moisture susceptibility of asphalt mixes containing RAP and different types of aggregates and asphalt binders using the surface free energy method  

Science Journals Connector (OSTI)

Abstract The surface free energy (SFE) measurement of asphalt binder and aggregate is considered a reliable mechanistic framework for evaluating the moisture-induced damage potential of asphalt mixes. In the present study, the SFE method was used to evaluate the effects of asphalt binder type, Reclaimed Asphalt Pavement (RAP) and its amount, and aggregate type on the moisture-induced damage potential of asphalt mixes. The SFE components (non-polar, acid and base) of a PG 64-22 and a PG 76-28 (polymer-modified) asphalt binders, blended with different amounts of RAP binder (0%, 10%, 25% and 40%) were measured in the laboratory using a Dynamic Contact Angle (DCA) analyzer. Also, the SFE components of six types of aggregates, namely limestone, rhyolite, sandstone, granite, gravel, and basalt were used in this study. The SFE components of limestone and rhyolite aggregates were measured using a Universal Sorption Device (USD), while those of the sandstone, granite, gravel, and basalt aggregates were obtained from the literature. The energy ratio parameters estimated based on the spreading coefficient, the work of adhesion, and the work of debonding were used to assess the moisture-induced damage potential of different combinations of asphalt binders and different RAP binder contents and aggregates. The SFE test results indicated that the acid SFE component of PG 64-22 and PG 76-28 asphalt binders increase with the addition of RAP binder, while the base SFE component remains almost unchanged. Also, the wettability and the work of adhesion of both PG 64-22 and PG 76-28 asphalt binders over different types of aggregates increased with an increase in RAP content (by 25% and more). Based on the energy ratio parameters, it was found that the resistance to moisture-induced damage increased with an increase in RAP content for both PG 64-22 and PG 76-28 asphalt binders and all types of aggregates, specifically when higher RAP contents were used. Moreover, it was found that the higher the total SFE of the aggregates, the lower the energy ratio parameter values. Therefore, a high total SFE component of aggregate may result in a high moisture-induced damage potential of the mix. The results presented herein are expected to be helpful in mechanistically assessing the moisture-induced damage potential of asphalt mixes, produced with polymer-modified and non-polymer-modified asphalt binders, containing RAP.

Rouzbeh Ghabchi; Dharamveer Singh; Musharraf Zaman

2014-01-01T23:59:59.000Z

380

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

382

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

383

Optical and plasmonic spectroscopy with cantilever shaped materials  

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

plasmonic spectroscopy with cantilever shaped materials plasmonic spectroscopy with cantilever shaped materials This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2011 J. Phys. D: Appl. Phys. 44 445102 (http://iopscience.iop.org/0022-3727/44/44/445102) Download details: IP Address: 128.219.49.13 The article was downloaded on 28/12/2012 at 18:01 Please note that terms and conditions apply. View the table of contents for this issue, or go to the journal homepage for more Home Search Collections Journals About Contact us My IOPscience IOP PUBLISHING JOURNAL OF PHYSICS D: APPLIED PHYSICS J. Phys. D: Appl. Phys. 44 (2011) 445102 (9pp) doi:10.1088/0022-3727/44/44/445102 Optical and plasmonic spectroscopy with cantilever shaped materials L Tetard 1 , A Passian 1,2 , R H Farahi 1 , B H Davison 1 , A L Lereu 3 and T Thundat

384

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress  

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

Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow them to literally "walk" along microscopic tracks. Motor proteins (in the kinesin and myosin families) have been extensively studied by x-ray crystallography, but until recently there was little molecular structural information for dyneins, another type of motor protein. A group from the University of California, San Francisco, working at ALS Beamline 8.3.1 has reported the 6-Å-resolution structure of the motor domain of dynein in yeast. It reveals details of the ring-shaped motor as well as a new, unanticipated feature called the buttress that may play an important role in dynein's mechanical cycle.

385

L-Shaped Flume Wave Basin | Open Energy Information  

Open Energy Info (EERE)

L-Shaped Flume Wave Basin L-Shaped Flume Wave Basin Jump to: navigation, search Basic Specifications Facility Name L-Shaped Flume Wave Basin Overseeing Organization United States Army Corp of Engineers (ERDC) Hydrodynamic Testing Facility Type Wave Basin Length(m) 76.2 Beam(m) 15.2 Depth(m) 1.8 Water Type Freshwater Special Physical Features Contact POC Towing Capabilities Towing Capabilities None Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.6 Maximum Wave Height(m) at Wave Period(s) 10.0 Wave Period Range(s) 10.0 Current Velocity Range(m/s) 0.0 Programmable Wavemaking Yes Wave Direction Uni-Directional Simulated Beach No Channel/Tunnel/Flume Channel/Tunnel/Flume None Wind Capabilities Wind Capabilities None Control and Data Acquisition Description Automated data acquisition and control sys

386

Electron beam machining using rotating and shaped beam power distribution  

DOE Patents [OSTI]

An apparatus and method for electron beam (EB) machining (drilling, cutting and welding) that uses conventional EB guns, power supplies, and welding machine technology without the need for fast bias pulsing technology. The invention involves a magnetic lensing (EB optics) system and electronic controls to: 1) concurrently bend, focus, shape, scan, and rotate the beam to protect the EB gun and to create a desired effective power-density distribution, and 2) rotate or scan this shaped beam in a controlled way. The shaped beam power-density distribution can be measured using a tomographic imaging system. For example, the EB apparatus of this invention has the ability to drill holes in metal having a diameter up to 1000 .mu.m (1 mm or larger), compared to the 250 .mu.m diameter of laser drilling.

Elmer, John W. (Pleasanton, CA); O'Brien, Dennis W. (Livermore, CA)

1996-01-01T23:59:59.000Z

387

Causal monotonicity, omniscient foliations and the shape of space  

E-Print Network [OSTI]

What is the shape of space in a spacetime? One way of addressing this issue is to consider edgeless spacelike submanifolds of the spacetime. An alternative is to foliate the spacetime by timelike curves and consider the quotient obtained by identifying points on the same timelike curve. In this article we investigate each of these notions and obtain conditions such that it yields a meaningful shape of space. We also consider the relationship between these two notions and find conditions for the quotient space to be diffeomorphic to any edgeless spacelike hypersurface. In particular, we find conditions in which merely local behavior (being spacelike) combined with the correct behavior on the homotopy level guarantees that a putative shape of space really is precisely that.

Steven G. Harris; Robert J. low

2001-08-03T23:59:59.000Z

388

Electron beam machining using rotating and shaped beam power distribution  

DOE Patents [OSTI]

An apparatus and method are disclosed for electron beam (EB) machining (drilling, cutting and welding) that uses conventional EB guns, power supplies, and welding machine technology without the need for fast bias pulsing technology. The invention involves a magnetic lensing (EB optics) system and electronic controls to: (1) concurrently bend, focus, shape, scan, and rotate the beam to protect the EB gun and to create a desired effective power-density distribution, and (2) rotate or scan this shaped beam in a controlled way. The shaped beam power-density distribution can be measured using a tomographic imaging system. For example, the EB apparatus of this invention has the ability to drill holes in metal having a diameter up to 1,000 {micro}m (1 mm or larger), compared to the 250 {micro}m diameter of laser drilling. 5 figs.

Elmer, J.W.; O`Brien, D.W.

1996-07-09T23:59:59.000Z

389

Shape-induced phenomena in finite-size antiferromagnets  

Science Journals Connector (OSTI)

It is common knowledge that the direction of the easy axis in a finite-size ferromagnetic sample is controlled by its shape. In the present paper we show that a similar phenomenon should be observed in compensated antiferromagnets with strong magnetoelastic coupling. The destressing energy which originates from the long-range magnetoelastic forces is analogous to the demagnetization energy in ferromagnetic materials and is responsible for the formation of the equilibrium domain structure and the anisotropy of macroscopic magnetic properties. In particular, the crystal shape may be a source of additional uniaxial magnetic anisotropy which removes the degeneracy of the antiferromagnetic vector or the artificial fourth-order anisotropy in the case of a square cross-section sample. In the special case of antiferromagnetic nanopillars, shape-induced anisotropy can be substantially enhanced due to lattice mismatch with the substrate. These effects can be detected by magnetic rotational torque and antiferromagnetic resonance measurements.

Helen V. Gomonay and Vadim M. Loktev

2007-05-25T23:59:59.000Z

390

Mass transfer experiments on single irregular-shaped particles  

SciTech Connect (OSTI)

Mass transfer from irregular-shaped naphthalene particles (100-200 {mu}m in size) was studied in an electrodynamic balance. Charged particles were suspended in an electrostatic field directly in line with a calibrated air jet. Mass and size change histories were obtained under ambient conditions, and under steady- and pulsed-flow conditions. For natural convection, the time-averaged Sherwood number was similar to that for spheres. Forced-convection Sherwood number under steady-flow conditions was strongly dependent on particle shape and particle Reynolds number, and was consistently higher than values predicted for spheres at comparable Reynolds numbers. This paper validates the technique and indicates the shape effect on mass transfer from single particles.

Ramezan, M. (Burns and Roe Services Corp., Pittsburgh, PA (US)); Kale, S.R. (Dept. of Mechanical and Aerospace Engineering, West Virginia Univ., Morgantown, WV (US)); Anderson, R.J. (Dept. of Energy, Morgantown Energy Technology Center, Morgantown, WV (US))

1991-01-01T23:59:59.000Z

391

Analysis of cavern shapes for the strategic petroleum reserve.  

SciTech Connect (OSTI)

This report presents computational analyses to determine the structural integrity of different salt cavern shapes. Three characteristic shapes for increasing cavern volumes are evaluated and compared to the baseline shape of a cylindrical cavern. Caverns with enlarged tops, bottoms, and mid-sections are modeled. The results address pillar to diameter ratios of some existing caverns in the system and will represent the final shape of other caverns if they are repeatedly drawn down. This deliverable is performed in support of the U.S. Strategic Petroleum Reserve. Several three-dimensional models using a close-packed arrangement of 19 caverns have been built and analyzed using a simplified symmetry involving a 30-degree wedge portion of the model. This approach has been used previously for West Hackberry (Ehgartner and Sobolik, 2002) and Big Hill (Park et al., 2005) analyses. A stratigraphy based on the Big Hill site has been incorporated into the model. The caverns are modeled without wells and casing to simplify the calculations. These calculations have been made using the power law creep model. The four cavern shapes were evaluated at several different cavern radii against four design factors. These factors included the dilatant damage safety factor in salt, the cavern volume closure, axial well strain in the caprock, and surface subsidence. The relative performance of each of the cavern shapes varies for the different design factors, although it is apparent that the enlarged bottom design provides the worst overall performance. The results of the calculations are put in the context of the history of cavern analyses assuming cylindrical caverns, and how these results affect previous understanding of cavern behavior in a salt dome.

Ehgartner, Brian L.; Sobolik, Steven Ronald

2006-07-01T23:59:59.000Z

392

Electric resistance monitoring as a method for controlling shape memory alloy characteristics during shape-setting treatments in the furnace  

Science Journals Connector (OSTI)

Abstract This paper proposes a method, based on electric resistance, for monitoring online the shape-setting of NiTi shape memory alloys during thermal treatments in the furnace. The experimental part includes straight-annealing experiments of 1mm Ni-rich NiTi wires with different cold-working degrees (0%, 25%, 30% and - 40% CW series) or at various ageing temperatures (708K, 748K, 808K, 853K, and 893K T series). Furthermore shape-setting experiments of ? springs at 708K are reported. A test current was injected into each specimen during ageing and the resulting tension was measured continuously over a set length of material, initially for 1800s. The resulting curves were repeatable and showed an initial drop in voltage, followed by a definite rise, a plateau and a long slow decrease. These epochs are connected to critical latencies that were used to set the durations of subsequent shape-setting experiments of separate samples in the CW and T series. Mechanical tensile tests, DSC, XRD measurements and FEG-SEM analyses were carried out on all specimens. Correlations were established between electric resistance curve latencies, mechanical performance and microstructural evolution in the material. In particular, the point at the end of the plateau region appears to mark optimal pseudoelastic behaviour. This method may improve the efficiency of parameter optimisation in shape memory alloys processing.

Simone Pittaccio; Lorenzo Garavaglia

2014-01-01T23:59:59.000Z

393

Pearling in cells: A clue to understanding cell shape  

E-Print Network [OSTI]

Gradual disruption of the actin cytoskeleton induces a series of structural shape changes in cells leading to a transformation of cylindrical cell extensions into a periodic chain of "pearls". Quantitative measurements of the pearling instability give a square-root behavior for the wavelength as a function of drug concentration. We present a theory that explains these observations in terms of the interplay between rigidity of the submembranous actin shell and tension that is induced by boundary conditions set by adhesion points. The theory allows estimation of the rigidity and thickness of this supporting shell. The same theoretical considerations explain the shape of nonadherent edges in the general case of untreated cells.

Roy Bar-Ziv; Tsvi Tlusty; Elisha Moses; Samuel A. Safran; Alexander Bershadsky

2010-08-05T23:59:59.000Z

394

Modeling of Hydrogen Line Shapes for the Diagnostic of ITER  

SciTech Connect (OSTI)

The state of art of the line shape modeling techniques involved in tokamak edge plasma spectroscopy is reported, in the context of the preparation for ITER. Hydrogen spectra are calculated assuming a line-of-sight crossing a 2D-plasma background obtained from numerical simulations. The Doppler, Zeeman and Stark effects are retained. Ion dynamics effects are accounted for by using the numerical simulation method. The possibility for a line shape-based diagnostic of the ITER divertor plasma is examined through fittings of simulated spectra and comparison with the input plasma fields.

Rosato, J.; Capes, H.; Godbert-Mouret, L.; Koubiti, M.; Marandet, Y.; Stamm, R. [PIIM, UMR 6633 Universite de Provence / CNRS, Centre de St-Jerome, Case 232, F-13397 Marseille Cedex 20 (France); Kotov, V.; Reiter, D. [IEF-Plasmaphysik, Forschungszentrum Juelich GmbH, Euratom Association, Trilateral Euregio Cluster, D-52425 Juelich (Germany)

2010-10-29T23:59:59.000Z

395

Investigation of materials performances in high moisture environments including corrosive contaminants typical of those arising by using alternative fuels in gas turbines  

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

materials performances in high moisture materials performances in high moisture environments including corrosive contaminants typical of those arising by using alternative fuels in gas turbines Gerald Meier, Frederick Pettit and Keeyoung Department of Materials Science and Engineering, Jung University of Pittsburgh Pittsburgh, PA 15260 Peer review Workshop III UTSR Project 04 01 SR116 October 18-20, 2005 Project Approach Task I Selection and Preparation of Specimens Task II Selection of Test Conditions Specimens : GTD111+CoNiCrAlY and Pt Aluminides, N5+Pt Aluminides Deposit : No Deposit, CaO, CaSO 4 , Na 2 SO 4 1150℃ Dry 1150℃ Wet 950℃ Wet 750℃ SO 3 950℃ Dry Selection of Test Temperature, T 1 , Gas Environment and Deposit Composition, D

396

Closing the Gap to the Capacity of APSK: Constellation Shaping and Degree Distributions  

E-Print Network [OSTI]

7 / 21 #12;Constellation Shaping Constellation Shaping The energy efficiency can be improved.5 1 1.5 2 Figure : Uniform 32APSK vs. shaped 32APSK. Both constellations have the same energy. -10 0Closing the Gap to the Capacity of APSK: Constellation Shaping and Degree Distributions Matthew C

Valenti, Matthew C.

397

CompositionStructureFunction Diagrams of TiNiAu Thin Film Shape Memory Alloys  

Science Journals Connector (OSTI)

thin films; annealing; high temperature shape memory alloys; combinatorial materials science; phase transformation ...

Pio John S. Buenconsejo; Alfred Ludwig

2014-11-04T23:59:59.000Z

398

3D Human Motion Analysis Framework for Shape Similarity and Retrieval  

E-Print Network [OSTI]

3D Human Motion Analysis Framework for Shape Similarity and Retrieval Rim Slamaa,b , Hazem Wannousa, Villeneuve d'Ascq, France c Institut Mines-T´el´ecom / T´el´ecom Lille, Villeneuve d'Ascq, France Abstract 3D the problem of 3D shape representation and shape similarity in human video sequences. Our shape representation

Paris-Sud XI, Université de

399

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Wednesday, 28 April 2010 00:00 Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

400

Crystallographic Boundary in a Magnetic Shape Memory Material  

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

Crystallographic Boundary in a Crystallographic Boundary in a Magnetic Shape Memory Material Crystallographic Boundary in a Magnetic Shape Memory Material Print Wednesday, 18 April 2012 11:37 A research team has shown the existence of a special structural boundary in an intermetallic compound by combining the unique measurement facilities at the ALS, the single-crystal production capabilities of Tohoku University (Japan), and the materials science expertise of Johannes-Gutenberg-University (Germany). Conventional shape memory materials, such as the commercially available Nitinol (an alloy of nickel and titanium used in microsensing, actuation, and medical devices), undergo a phase transformation with cooling or heating when large areas of a sample distort along a single axis, and where the atomic-unit cell "stretching" from a cube to a rectangular prism occurs. In contrast, magnetic shape memory (MSM) materials are much more rare but have an advantage: The axis of magnetic anisotropy is coupled to the direction of stretching, so a perfect MSM crystal can be made to flex and bend reversibly by applying an external magnetic field.

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Wednesday, 28 April 2010 00:00 Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

402

Optimal Positioning Strategies for Shape Changes in Robot Teams  

E-Print Network [OSTI]

Fierro School of Electrical & Computer Engineering Oklahoma State University Stillwater, OK 74078, USA for complete regulation of the formation size via constraints on the shape scale. We expect that these results, a system composed of teams of cooperative robots is desirable because of its flexibility, robustness

Spletzer, John R.

403

Constellation Shaping for Bit-Interleaved Coded APSK  

E-Print Network [OSTI]

Constellation Shaping for Bit-Interleaved Coded APSK Matthew C. Valenti and Xingyu Xiang Lane a turbo-coded amplitude-phase shift keying (APSK) constellation. After bit-interleaving, a subset to select the symbol within the subconstellation. Symbols from lower-energy subconstellations are selected

Valenti, Matthew C.

404

Constellation Shaping for Communication Channels with Quantized Outputs  

E-Print Network [OSTI]

average energy are selected more frequently than constellations with higher energy. However, the resultsConstellation Shaping for Communication Channels with Quantized Outputs Chandana Nannapaneni signal constellation and the output is quantized by a uniform scalar quantizer. The goal is to jointly

Valenti, Matthew C.

405

Geodesic Shape Spaces of Surfaces of Xiuwen Liu1  

E-Print Network [OSTI]

Geodesic Shape Spaces of Surfaces of Genus Zero Xiuwen Liu1 , Washington Mio2 , Yonggang Shi3 surfaces im- mersed in Euclidean space Rk . The spaces are equipped with geodesic metrics that depend on the tension and rigidity of the surfaces. We de- velop algorithms to calculate geodesics and geodesic

Paris-Sud XI, Université de

406

Shapes of geodesic nets. Alexander Nabutovsky and Regina Rotman  

E-Print Network [OSTI]

Shapes of geodesic nets. Alexander Nabutovsky and Regina Rotman August 14, 2006 Abstract Let M n infinitely many geometrically distinct geodesic nets on this manifold. We will also show that either the length of a shortest pe­ riodic geodesic is bounded in terms of the volume of a manifold M n

Nabutovsky, Alexander

407

Dynamic Loading of Polycrystalline Shape Memory Alloy Rods  

E-Print Network [OSTI]

Memory Alloys are a class of materials that change their internal struc- ture due to changes austenite phase (A). At low temperatures the material exists in a low symmetry martensite phase (M with the specific way the phase transition occurs (Funakubo, 1987). The shape memory effect allows material which

Popov, Peter

408

CoNiGa High Temperature Shape Memory Alloys  

E-Print Network [OSTI]

commercially successful SMAs such as NiTi and Cu-based alloys. In recent years, the CoNiGa system has emerged as a new ferromagnetic shape memory alloy with some compositions exhibiting high martensitic transformation temperatures which makes CoNiGa a potential...

Dogan, Ebubekir

2011-10-21T23:59:59.000Z

409

Advances in Aerodynamic Shape Optimization Antony Jameson1  

E-Print Network [OSTI]

1 Advances in Aerodynamic Shape Optimization Antony Jameson1 Stanford University, Stanford, CA to aerodynamic design. This shift has been mainly motivated by the availability of high performance comput- ing by J.L. Lions [1]. The method was first used for aerodynamic design by Jameson in 1988 [2, 3]. Since

Jameson, Antony

410

China's News Media: Transition Shaped by Power and Money  

E-Print Network [OSTI]

China's News Media: Transition Shaped by Power and Money EAST ASIA INSTITUTE of CommunicaDon, gave a lecture on August 31, 2010 Dtled China's News Media: Transi1on Dr. Zhang examined the changes made throughout China's history. Many guests

Dodla, Ramana

411

Bayesian Flexible Shape Matching with Applications to Structural Proteomics  

E-Print Network [OSTI]

and an associated Procrustes-type metric, along with a highly efficient algorithm for computing flexible shape for several variants including both affine and rigid-body component transformations. We demonstrate; Stoyan et al., 1995; Small, 1996; Dry- den and Mardia, 1998; Kendall et al., 1999). In this paper we

Schmidler, Scott

412

Modeling 3D Facial Shape from DNA Peter Claes1  

E-Print Network [OSTI]

Department of Genetics, Stanford University, Palo Alto, California, United States of America, 5 Hudson spatially dense quasi- landmarks to measure face shape in population samples with mixed West African (sex and population group). By jointly modeling sex, genomic ancestry, and genotype, the independent

Tang, Hua

413

Shape-selective sieving layers on an oxide catalyst surface  

E-Print Network [OSTI]

Shape-selective sieving layers on an oxide catalyst surface Christian P. Canlas1 , Junling Lu2 of molecules or can modify the product selectivity (regioselectivity or enantioselectivity) of catalyst sites, and not all catalyst classes can be readily synthesized with pores of the correct dimensions. Here, we present

Mohseni, Hooman

414

Organic experiences: (re)shaping interactions with deformable displays  

Science Journals Connector (OSTI)

Display technology developments mean the next generation of visual output devices will extend beyond the rigid, flat surfaces with which we are familiar to those that the user or the machine can deform. These will allow users to physically push, pull, ... Keywords: deformable displays, machine-initiated shape change, organic user experience, organic user interfaces, user-deformation

Jason Alexander; Ryan Brotman; David Holman; Audrey Younkin; Roel Vertegaal; Johan Kildal; Andrs A. Lucero; Anne Roudaut; Sriram Subramanian

2013-04-01T23:59:59.000Z

415

Inverted gravity, not inverted shape impairs biological motion perception  

E-Print Network [OSTI]

Inverted gravity, not inverted shape impairs biological motion perception Nikolaus Trojetroje. Scrambling should therefore impair perception even more than inversion. Upright and inverted scrambled motion). Is the cause of the inversion effect inverted gravity? If this is the case upright scrambled motion should

Troje, Nikolaus

416

Analytical Shape Computation of Macromolecules: II. Inaccessible Cavities in Proteins  

E-Print Network [OSTI]

that cavities in proteins could contain disordered water molecules not apparent in the X-ray structural data.9Analytical Shape Computation of Macromolecules: II. Inaccessible Cavities in Proteins Jie Liang,1-Champaign, Urbana, Illinois ABSTRACT The structures of proteins are well-packed, yet they contain numerous cavi

Dai, Yang

417

How efficiency shapes market impact J. Doyne Farmer,1, 2  

E-Print Network [OSTI]

How efficiency shapes market impact J. Doyne Farmer,1, 2 Austin Gerig,3, 1 Fabrizio Lillo,1, 4 Pola 12, 00198, Roma, Italy 3School of Finance and Economics, University of Technology, Sydney metaorder size 17 1. Immediate impact 17 2. Permanent impact 18 C. Effect of maximum order size 18 D. Market

418

Absolute shape measurements using high-resolution optoelectronic holography methods  

E-Print Network [OSTI]

Absolute shape measurements using high- resolution optoelectronic holography methods Cosme Furlong optoelectronic holography (OEH) methodology is described. This description addresses apparatus and analysis-Optical Instrumentation Engineers. [S0091-3286(00)02601-5] Subject terms: CAD/CAE models; fiber optics; optoelectronic

Furlong, Cosme

419

Interpretation of Shape-Related Iconic Gestures in Virtual Environments  

E-Print Network [OSTI]

Interpretation of Shape-Related Iconic Gestures in Virtual Environments Timo Sowa and Ipke focused main- ly on deictic and emblematic gestures. Iconics, viewed as iconic signs in the sense idea towards a computational model of gesture semantics for iconic gestures. Based on an empirical

Wachsmut, Ipke

420

HELP SHAPE RESEARCH AND TECHNOLOGY DEVELOPMENT AT UTARI Needs Forum  

E-Print Network [OSTI]

HELP SHAPE RESEARCH AND TECHNOLOGY DEVELOPMENT AT UTARI TECHNOLOGY Needs Forum: Thursday, November areas of assistive technologies for persons with disabilities would help improve human performance in the future? How can technology help you in the future? What prospective assistive technologies would best

Huang, Haiying

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Three/1998 19 Shape Deposition Manufacturing (SDM) is a solid  

E-Print Network [OSTI]

-numerically-controlled (CNC) milling and electrical discharge machining (EDM) machines. Shape Deposition Manufacturing (SDM-numerically-controlled (CNC) milling machine (i.e., a material removal process). Such an implementation is a cost-effective way to create high-quality SFF machines. 1. Introduction Most solid freeform fabrication (SFF) systems

Weiss, Lee E.

422

Integral equations for shape and impedance reconstruction in corrosion detection  

E-Print Network [OSTI]

Integral equations for shape and impedance reconstruction in corrosion detection Fioralba Cakoni of the method. 1 Introduction We consider an inverse problem originating from corrosion detection. Let D R2 Angewandte Mathematik, Universität Göttingen, 37083 Göttingen, Germany 1 #12;part c affected by corrosion

Cakoni, Fioralba

423

Simultaneous reconstruction of shape and impedance in corrosion detection  

E-Print Network [OSTI]

Simultaneous reconstruction of shape and impedance in corrosion detection Fioralba Cakoni , Rainer Kress and Christian Schuft Abstract Corrosion detection can be modelled by the Laplace equation an inverse problem that models corrosion detection. Let D R2 be a simply connected bounded domain with piece

Cakoni, Fioralba

424

Polymer Crowding and Shape Distributions in Polymer-Nanoparticle Mixtures  

E-Print Network [OSTI]

Macromolecular crowding can influence polymer shapes, which is important for understanding the thermodynamic stability of polymer solutions and the structure and function of biopolymers (proteins, RNA, DNA) under confinement. We explore the influence of nanoparticle crowding on polymer shapes via Monte Carlo simulations and free-volume theory of a coarse-grained model of polymer-nanoparticle mixtures. Exploiting the geometry of random walks, we model polymer coils as effective penetrable ellipsoids, whose shapes fluctuate according to the probability distributions of the eigenvalues of the gyration tensor. Accounting for the entropic cost of a nanoparticle penetrating a larger polymer coil, we compute the crowding-induced shift in the shape distributions, radius of gyration, and asphericity of ideal polymers in a theta solvent. With increased nanoparticle crowding, we find that polymers become more compact (smaller, more spherical), in agreement with predictions of free-volume theory. Our approach can be easily extended to nonideal polymers in good solvents and used to model conformations of biopolymers in crowded environments.

Wei Kang Lim; Alan R. Denton

2014-10-24T23:59:59.000Z

425

Shaping the Future of Water and Wastewater Services  

E-Print Network [OSTI]

Shaping the Future of Water and Wastewater Services Jim Conlin Acting GM Long Term Asset Strategy works · 1400 Service reservoirs · >600 Pumping stations · 47,000kms Water pipes Wastewater Assets at an individual or a group of assets #12;Vision AM Strategy Wastewater Pan Scotland Strategy Bathing Waters

Painter, Kevin

426

A traffic shaping optimization methodology for web systems  

Science Journals Connector (OSTI)

In recent years, computer networks have been characterized by heterogeneous traffic and dynamic management of different kinds of services. The web and network requirements have increased within time and, since bandwidth is limited, it becomes necessary ... Keywords: QoS, internet services, optimization, traffic shaping, world wide web

Caio Mesquita; Ulisses Cavalca; Adriano C.M. Pereira; Eduardo G. Carrano

2013-11-01T23:59:59.000Z

427

Non-Axisymmetric Shaping of Tokamaks Preserving Quasi-Axisymmetry  

SciTech Connect (OSTI)

If quasi-axisymmetry is preserved, non-axisymmetric shaping can be used to design tokamaks that do not require current drive, are resilient to disruptions, and have robust plasma stability without feedback. Suggestions for addressing the critical issues of tokamaks can only be validated when presented with sufficient specificity that validating experiments can be designed. The purpose of this paper is provide that specificity for non-axisymmetric shaping. To our knowledge, no other suggestions for the solution of a number of tokamak issues, such as disruptions, have reached this level of specificity. Sequences of three-field-period quasi-axisymmetric plasmas are studied. These sequences address the questions: (1) What can be achieved at various levels of non-axisymmetric shaping? (2) What simplifications to the coils can be achieved by going to a larger aspect ratio? (3) What range of shaping can be achieved in a single experimental facility? The sequences of plasmas found in this study provide a set of interesting and potentially important configurations.

Long-Poe Ku and Allen H. Boozer

2009-06-05T23:59:59.000Z

428

Raw Data Compression in Computed Tomography: Noise Shaping  

E-Print Network [OSTI]

Raw Data Compression in Computed Tomography: Noise Shaping Yao Xie (team member: Adam Wang) Project.1 Background X-ray computed tomography (CT) builds on the physical principles of radiography. It uses multiple ring that has a limited data transfer rate. Compression can be used to reduce the data rate through

Xie, Yao

429

Meniscus on a shaped fibre: singularities and hodograph formulation  

Science Journals Connector (OSTI)

...0021-9797(90)90265-P ) 21 Haile, WA , and BM Phillips. 1995 Deep grooved polyester fiber for wet lay applications. Tappi J. 78, 139-142. 22 Koc, SK , S Duzyer, R Berger, and AS Hockenberger. 2012 Effect of cross-sectional shape on the...

2014-01-01T23:59:59.000Z

430

Relative permeability of CBM reservoirs: Controls on curve shape  

Science Journals Connector (OSTI)

Relative permeability to gas and water for 2-phase flow coalbed methane (CBM) reservoirs has long been known to exhibit a strong control on (gas and water) production profile characteristics. Despite its important control on both primary and enhanced recovery of CBM for coal seams that have not been fully dewatered, relative permeability in coal has received little attention in the literature in the past decade. There are few published laboratory-derived curves; these studies and their resulting data represent a small subset of the commercial CBM reservoirs and do not allow for a systematic investigation of the physical controls on relative permeability curve shape. Other methods for estimation of relative permeability curves include derivation from simulation history-matching, and production data analysis. Both of these methods will yield pseudo-relative permeability curves whose shapes could be affected by several dynamic CBM reservoir and operating characteristics. The purpose of the current work is to perform a systematic investigation of the controls on CBM relative permeability curve shape, including non-static fracture permeability and porosity, multi-layer effects and transient flow. To derive the relative permeability curves, effective permeability to gas and water are obtained from flow equations, flow rates and pressure data. Simulated cases are analyzed so that derived and input curves may be compared allowing for investigation of CBM reservoir properties on curve shape. One set of relative permeability curves that were input into the simulator were obtained from pore-scale modeling. Field cases from two basins are also examined and controls on derived relative permeability curve shape inferred. The results of this work should be useful for future CBM development and greenhouse gas sequestration studies, and it is hoped that it will spark additional research of this critical CBM flow property.

C.R. Clarkson; M. Rahmanian; A. Kantzas; K. Morad

2011-01-01T23:59:59.000Z

431

Building America Technology Solutions for New and Existing Homes: Impact of Infiltration and Ventilation on Measured Space Conditioning Energy and Moisture Levels in the Hot-Humid Climate, Cocoa, Florida (Fact Sheet)  

Broader source: Energy.gov [DOE]

This case study describes research to assess the moisture and cooling load impacts of airtightness and mechanical ventilation in two identical laboratory homes in the hot-humid climate over the cooling season.

432

Efficient Computation of Topological Features from Point Data and Shapes |  

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

Efficient Computation of Topological Features from Point Data and Shapes Efficient Computation of Topological Features from Point Data and Shapes January 16, 2014 10:30AM to 11:30AM Presenter Fengtao Fan, Postdoc Interviewee Location Building 240, Room 1404-1405 Type Seminar Series Abstract: The topological features of an object are features which are preserved while continuously deforming the object. Examples are the dimension of an object and the number of holes in it. In contrast, the geometric features of an object such as its volume can dramatically change under such deformations. The robustness of topological features makes them more appealing for analyzing objects in the presence of noise, which is inevitable in practice. Researchers in various areas such as topological data analysis, computer graphics, visualization, and sensor networks have

433

Role of shapes in the identification of superheavy nuclei  

SciTech Connect (OSTI)

The synthesis and identification of superheavy nuclei have taken a dramatic turn recently with the emergence of hot fusion reactions. Such new methods have enabled the synthesis and identification of superheavy elements with Z=114-116 and 118. The identification of such elements is mainly done by observing their {alpha}-decay chains terminating with spontaneous fission events. In such studies, the role played by the shapes of superheavy elements has assumed great significance. In this work, we use the Shanmugam-Kamalaharan model for {alpha} decay, which is versatile in accounting for the shapes and deformations of the parent and the daughter nuclei as well as the charge redistribution (also termed charge equilibration) process during the decay. Our calculations turn out to be very useful for the identification of superheavy elements.

Shanmugam, G.; Sudhakar, S.; Niranjani, S. [SK Institute of Higher Studies, S-2, Lotus Colony, Nandanam, Chennai - 600 035 (India)

2005-09-01T23:59:59.000Z

434

Stress measurements in glass using shaped-charge jets  

Science Journals Connector (OSTI)

Stresses were measured in glass targets in the vicinity of a penetrating shaped-charge jet. Stress levels of approximately 0.3 \\{GPa\\} were measured 1220mm away from a jet formed by a 35mm copper liner. High speed framing camera photographs showed that the penetration velocity in the glass was 2.57 km/s and the glass fracture velocity was 2.10 km/s.

William Lawrence; Robert E. Franz

1987-01-01T23:59:59.000Z

435

Optimal Heat Collection Element Shapes for Parabolic Trough Concentrators  

SciTech Connect (OSTI)

For nearly 150 years, the cross section of the heat collection tubes used at the focus of parabolic trough solar concentrators has been circular. This type of tube is obviously simple and easily fabricated, but it is not optimal. It is shown in this article that the optimal shape, assuming a perfect parabolic figure for the concentrating mirror, is instead oblong, and is approximately given by a pair of facing parabolic segments.

Bennett, C

2007-11-15T23:59:59.000Z

436

Characterization of aggregate shape properties using a computer automated system  

E-Print Network [OSTI]

????????????????????.. 6 The Influence of Aggregate Shape on Pavement Performance... 7 Hot-mix Asphalt Mixtures?...?.?.???........................ 7 Hydraulic Cement Concrete Mixtures????????... 11 Unbound Layers???????.????????........ 14 Identifying Aggregate... base and subbase layers have a significant influence on the engineering properties of the pavement structure in which they are used (Kandhal and Parker 1998; Saeed et al. 2001; Meininger 1998). The form, angularity, and texture of fine and coarse...

Al Rousan, Taleb Mustafa

2005-02-17T23:59:59.000Z

437

Self-assembly of amphiphilic peanut-shaped nanoparticles  

E-Print Network [OSTI]

We use computer simulation to investigate the self-assembly of Janus-like amphiphilic peanut-shaped nanoparticles, finding phases of clusters, bilayers and micelles in accord with ideas of packing familiar from the study of molecular surfactants. However, packing arguments do not explain the hierarchical self-assembly dynamics that we observe, nor the coexistence of bilayers and faceted polyhedra. This coexistence suggests that experimental realizations of our model can achieve multipotent assembly of either of two competing ordered structures.

Stephen Whitelam; Stefan A. F. Bon

2010-02-19T23:59:59.000Z

438

What Have Spacetime, Shape and Symmetry to Do with Thermodynamics?  

E-Print Network [OSTI]

Some highly speculative and serendipitous ideas that might relate thermodynamics, spacetime, shape and symmetry are brought together. A hypothetical spacetime comprising a pointwise lattice with a fixed metric is considered. If there were absolute symmetry between displacement and time it is suggested that the velocity of light would be an integer conversion factor between the units of these quantities. In the context of such outlandish hypotheses the answer to the question posed would be 'everything'.

Jim McGovern

2007-10-05T23:59:59.000Z

439

Investigation of residential central air conditioning load shapes in NEMS  

SciTech Connect (OSTI)

This memo explains what Berkeley Lab has learned about how the residential central air-conditioning (CAC) end use is represented in the National Energy Modeling System (NEMS). NEMS is an energy model maintained by the Energy Information Administration (EIA) that is routinely used in analysis of energy efficiency standards for residential appliances. As part of analyzing utility and environmental impacts related to the federal rulemaking for residential CAC, lower-than-expected peak utility results prompted Berkeley Lab to investigate the input load shapes that characterize the peaky CAC end use and the submodule that treats load demand response. Investigations enabled a through understanding of the methodology by which hourly load profiles are input to the model and how the model is structured to respond to peak demand. Notably, it was discovered that NEMS was using an October-peaking load shape to represent residential space cooling, which suppressed peak effects to levels lower than expected. An apparent scaling down of the annual load within the load-demand submodule was found, another significant suppressor of the peak impacts. EIA promptly responded to Berkeley Lab's discoveries by updating numerous load shapes for the AEO2002 version of NEMS; EIA is still studying the scaling issue. As a result of this work, it was concluded that Berkeley Lab's customary end-use decrement approach was the most defensible way for Berkeley Lab to perform the recent CAC utility impact analysis. This approach was applied in conjunction with the updated AEO2002 load shapes to perform last year's published rulemaking analysis. Berkeley Lab experimented with several alternative approaches, including modifying the CAC efficiency level, but determined that these did not sufficiently improve the robustness of the method or results to warrant their implementation. Work in this area will continue in preparation for upcoming rulemakings for the other peak coincident end uses, commercial air conditioning and distribution transformers.

Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

2002-05-01T23:59:59.000Z

440

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

442

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

443

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

444

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

445

Transport coefficients for shape degrees in terms of Cassini ovaloids  

Science Journals Connector (OSTI)

Previous computations of the potential landscape with the shapes parametrized in terms of Cassini ovaloids are extended to collective dynamics at finite excitations. Taking fission as the most demanding example of large scale collective motion, transport coefficients are evaluated along a fission path. We concentrate on those for average motion, namely, stiffness C, friction ?, and inertia M. Their expressions are formulated within a locally harmonic approximation and with the help of linear response theory. Different approximations are examined and comparisons are made with both previous studies, which involved different descriptions of single-particle dynamics, and macroscopic models. Special attention is paid to an appropriate definition of the deformation of the nuclear density and its relation to that of the single-particle potential. For temperatures above 3 MeV the inertia agrees with that of irrotational flow to less than a factor of 2, but shows larger deviations below, in particular in its dependence on the shape. Also, friction exhibits large fluctuations along the fission path for small excitations. They get smoothed out above 34 MeV where ? attains values in the range of the wall formula. For T>~2 MeV the inverse relaxation time ?=?/M turns out to be rather insensitive to the shape and increases with T.

F. A. Ivanyuk; H. Hofmann; V. V. Pashkevich; S. Yamaji

1997-04-01T23:59:59.000Z

446

High-speed pulse-shape generator, pulse multiplexer  

DOE Patents [OSTI]

The invention combines arbitrary amplitude high-speed pulses for precision pulse shaping for the National Ignition Facility (NIF). The circuitry combines arbitrary height pulses which are generated by replicating scaled versions of a trigger pulse and summing them delayed in time on a pulse line. The combined electrical pulses are connected to an electro-optic modulator which modulates a laser beam. The circuit can also be adapted to combine multiple channels of high speed data into a single train of electrical pulses which generates the optical pulses for very high speed optical communication. The invention has application in laser pulse shaping for inertial confinement fusion, in optical data links for computers, telecommunications, and in laser pulse shaping for atomic excitation studies. The invention can be used to effect at least a 10.times. increase in all fiber communication lines. It allows a greatly increased data transfer rate between high-performance computers. The invention is inexpensive enough to bring high-speed video and data services to homes through a super modem.

Burkhart, Scott C. (Livermore, CA)

2002-01-01T23:59:59.000Z

447

Fractionation by shape in deterministic lateral displacement microfluidic devices  

E-Print Network [OSTI]

We investigate the migration of particles of different geometrical shapes and sizes in a scaled-up model of a gravity-driven deterministic lateral displacement (g-DLD) device. Specifically, particles move through a square array of cylindrical posts as they settle under the action of gravity. We performed experiments that cover a broad range of orientations of the driving force (gravity) with respect to the columns (or rows) in the square array of posts. We observe that as the forcing angle increases particles initially locked to move parallel to the columns in the array begin to move across the columns of obstacles and migrate at angles different from zero. We measure the probability that a particle would move across a column of obstacles, and define the critical angle {\\theta}c as the forcing angle at which this probability is 1/2. We show that critical angle depends both on particle size and shape, thus enabling both size- and shape-based separations. Finally, we show that using the diameter of the inscribe...

Jiang, Mingliang; Drazer, German

2014-01-01T23:59:59.000Z

448

Power Corrections to Event Shapes with Mass-Dependent Operators  

E-Print Network [OSTI]

We introduce an operator depending on the "transverse velocity" r that describes the effect of hadron masses on the leading 1/Q power correction to event-shape observables. Here, Q is the scale of the hard collision. This work builds on earlier studies of mass effects by Salam and Wicke and of operators by Lee and Sterman. Despite the fact that different event shapes have different hadron mass dependence, we provide a simple method to identify universality classes of event shapes whose power corrections depend on a common nonperturbative parameter. We also develop an operator basis to show that at a fixed value of Q, the power corrections for many classic observables can be determined by two independent nonperturbative matrix elements at the 10% level. We compute the anomalous dimension of the transverse velocity operator, which is multiplicative in r and causes the power correction to exhibit non-trivial dependence on Q. The existence of universality classes and the relevance of anomalous dimensions are reproduced by the hadronization models in Pythia 8 and Herwig++, though the two programs differ in the values of their low-energy matrix elements.

Vicent Mateu; Iain W. Stewart; Jesse Thaler

2012-09-17T23:59:59.000Z

449

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality  

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

Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Rotary Firing in Ring-Shaped Protein Explains Unidirectionality Print Hexameric motor proteins represent a complex class of molecular machines that variously push and pull on biological molecules using adenosine triphosphate (ATP) as chemical fuel. A specialized class of ring-shaped motor proteins, hexameric helicases, can unwind DNA strands and perform large-scale manipulations of single-stranded nucleic acids in processes such as DNA replication, DNA repair, and gene expression. To understand how certain hexameric helicases walk with directional polarity along single-stranded nucleic acids, Berkeley researchers used x-ray crystallography at the ALS to solve the structure of a hexameric helicase, the Rho transcription termination factor (from E. coli), bound to both ATP mimics and an RNA substrate. The results showed that Rho functions like a rotary engine: as the motor spins, it pulls RNA strands through its interior. Interestingly, the rotary firing order of the motor is biased so that the Rho protein can walk in only one direction along the RNA chain.

450

Colorado's 2003 Moisture Outlook  

E-Print Network [OSTI]

Prepared by Tara Green and Odie Bliss http://climate.atmos.colostate.edu #12;HowHow we got 1980 1990 2000 Month Precipitation(inches) Fort Collins Total Water Year Precipitation (Oct-Sep) #12 1975 1985 1995 2005 Year Temperature(degreesF) #12;Fort Collins Summer Average Temperature (June

451

V-shaped resonators for addition of broad-area laser diode arrays  

DOE Patents [OSTI]

A system and method for addition of broad-area semiconductor laser diode arrays are described. The system can include an array of laser diodes, a V-shaped external cavity, and grating systems to provide feedback for phase-locking of the laser diode array. A V-shaped mirror used to couple the laser diode emissions along two optical paths can be a V-shaped prism mirror, a V-shaped stepped mirror or include multiple V-shaped micro-mirrors. The V-shaped external cavity can be a ring cavity. The system can include an external injection laser to further improve coherence and phase-locking.

Liu, Bo; Liu, Yun; Braiman, Yehuda Y.

2012-12-25T23:59:59.000Z

452

Computation of Hypersonic Flow about Maneuvering Vehicles with Changing Shapes  

SciTech Connect (OSTI)

Vehicles moving at hypersonic speeds have great importance to the National Security. Ballistic missile re-entry vehicles (RV's) travel at hypersonic speeds, as do missile defense intercept vehicles. Despite the importance of the problem, no computational analysis method is available to predict the aerodynamic environment of maneuvering hypersonic vehicles, and no analysis is available to predict the transient effects of their shape changes. The present state-of-the-art for hypersonic flow calculations typically still considers steady flow about fixed shapes. Additionally, with present computational methods, it is not possible to compute the entire transient structural and thermal loads for a re-entry vehicle. The objective of this research is to provide the required theoretical development and a computational analysis tool for calculating the hypersonic flow about maneuvering, deforming RV's. This key enabling technology will allow the development of a complete multi-mechanics simulation of the entire RV flight sequence, including important transient effects such as complex flight dynamics. This will allow the computation of the as-delivered state of the payload in both normal and unusual operational environments. This new analysis capability could also provide the ability to predict the nonlinear, transient behavior of endo-atmospheric missile interceptor vehicles to the input of advanced control systems. Due to the computational intensity of fluid dynamics for hypersonics, the usual approach for calculating the flow about a vehicle that is changing shape is to complete a series of steady calculations, each with a fixed shape. However, this quasi-steady approach is not adequate to resolve the frequencies characteristic of a vehicle's structural dynamics. Our approach is to include the effects of the unsteady body shape changes in the finite-volume method by allowing for arbitrary translation and deformation of the control volumes. Furthermore, because the Eulerian computational mesh for the fluid domain must be attached to the vehicle as it undergoes potentially high accelerations, that mesh must be viewed in a non-inertial coordinate frame. The usual conservation-law form of the fluid dynamic governing equations must be augmented. This approach thus requires the derivation of a significantly new numerical formulation, especially to incorporate a modern flux-splitting methodology as needed for numerical stability and accuracy.

Ferencz, R M; Felker, F F; Castillo, V M

2004-02-23T23:59:59.000Z

453

Objectives and Features Shape interrogation is the process of extraction of information from a geo-  

E-Print Network [OSTI]

, are widely used in scientific and engineering applications. For example, the hydrodynamic shape of propeller blades has an important role in marine applications, and the aerodynamic shape of turbine blades

Patrikalakis, Nicholas M.

454

Ab-initio phasing using nanocrystal shape transforms with incomplete unit cells  

Science Journals Connector (OSTI)

The shape transforms of nanocrystals with incomplete unit cells are studied using computer simulations. Structure-factor phases can be retrieved from the molecular transforms after removing the modulating shape transform terms.

Liu, H.

2013-10-01T23:59:59.000Z

455

Dynamic Shape Modeling of Consumers Daily Load Based on Data Mining  

Science Journals Connector (OSTI)

The shape characteristic of daily power consumption of consumers can be applied to guide their power consumption behaviors and improve load structures of power system. It is also the basis to obtain the shape cha...

Lianmei Zhang; Shihong Chen; Qiping Hu

2005-01-01T23:59:59.000Z

456

E-Print Network 3.0 - average shaped atlas Sample Search Results  

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

shaped atlas Search Powered by Explorit Topic List Advanced Search Sample search results for: average shaped atlas Page: << < 1 2 3 4 5 > >> 1 Retrospective Cross-Evaluation of an...

457

Influence of coarse aggregate size, shape and surface texture on rutting of hot mix asphalt concrete  

E-Print Network [OSTI]

The objectives of this study were to: 1 ) Evaluate the influence of coarse aggregate shape and surface texture on deformation characteristics of asphalt concrete, 2) Characterize aggregate elongation, shape and texture using fractal dimensional...

Yeggoni, Mohan

2012-06-07T23:59:59.000Z

458

Stability of gas-bubble equilibrium shape in uniform flow of an ideal fluid  

Science Journals Connector (OSTI)

Steady-state motion of a bubble in the shape of an ellipsoid of ... this paper, possible equilibrium shapes of a bubble in the form of a triaxial ellipsoid ... at the stagnation point and within the gas bubble on...

A. G. Petrov

459

Invited Paper Shape Control of Composite Material Plates Using Piezoelectric Actuators  

E-Print Network [OSTI]

of smart structures. These material include piezoelectric polymers and ceramics, shape memory alloysInvited Paper Shape Control of Composite Material Plates Using Piezoelectric Actuators Brij N control of composite material plates using piezoelectric actuators. A finite element formulation

460

Dynamic shape factors for hydox-generated plutonium dioxide-type non-sperical objects  

E-Print Network [OSTI]

. . . . . . . . . 1X NOMENCLATURE INTRODUCTION. BACKGROUND. THEORY. METHOD. . 14 Dynamic Shape Factors of a Hedron Characterized as a Single Variable, x. . Dynamic Shape Factors of a Hedron Characterized as Two Variables, x and y. Dynamic Shape Factors of a..., and this thesis to evaluates effects of the density and dynamic shape factors on the settling velocities of plutonium dioxide. THEORY Assume a particle in motion in a viscous fluid with velocity v. The fluid exerts a drag force on the particle defined as Fn...

Lohaus, James Harold

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Avalanche shape and exponents beyond mean-field theory  

E-Print Network [OSTI]

Elastic systems, such as magnetic domain walls, density waves, contact lines, and cracks, are all pinned by substrate disorder. When driven, they move via successive jumps called avalanches, with power law distributions of size, duration and velocity. Their exponents, and the shape of an avalanche, defined as its mean velocity as function of time, have recently been studied. They are known approximatively from experiments and simulations, and were predicted from mean-field models, such as the Brownian force model (BFM), where each point of the elastic interface sees a force field which itself is a random walk. As we showed in EPL 97 (2012) 46004, the BFM is the starting point for an $\\epsilon = d_{\\rm c}-d$ expansion around the upper critical dimension, with $d_{\\rm c}=4$ for short-ranged elasticity, and $d_{\\rm c}=2$ for long-ranged elasticity. Here we calculate analytically the ${\\cal O}(\\epsilon)$, i.e. 1-loop, correction to the avalanche shape at fixed duration $T$, for both types of elasticity. The exact expression is well approximated by $\\left_T\\simeq [ Tx(1-x)]^{\\gamma-1} \\exp\\left( {\\cal A}\\left[\\frac12-x\\right]\\right)$, $0shape at fixed avalanche size, not yet measured in experiments or simulations.

Alexander Dobrinevski; Pierre Le Doussal; Kay Jrg Wiese

2014-07-28T23:59:59.000Z

462

The 1-Jettiness DIS event shape: NNLL + NLO results  

E-Print Network [OSTI]

We present results for the complete NNLL+NLO (~ \\alpha_s) 1-jettiness (\\tau_1) event shape distribution for single jet (J) production in electron-nucleus (N_A) collisions e^- + N_A \\to e^- + J + X, in the deep inelastic scattering (DIS) region where the hard scale is set by the jet transverse momentum P_{J_T}. These results cover the entire \\tau_1-spectrum including the resummation (\\tau_1algorithm, and the fixed-order region where an explicit jet algorithm must be specified. Our code, used for generating the numerical results, is flexible enough to incorporate different jet algorithms for the fixed-order...

Kang, Zhong-Bo; Mantry, Sonny

2013-01-01T23:59:59.000Z

463

S-shaped magnetic macroparticle filter for cathodic arc deposition  

SciTech Connect (OSTI)

A new magnetic macroparticle filter design consisting of two 90{sup o} filters forming an S-shape is described. Transport properties of this S-filter are investigated using Langmuir and deposition probes. It is shown that filter efficiency is product of the efficiencies of two 90{sup o} filters and the deposition rate is still acceptably high to perform thin film deposition. Films of amorphous hard carbon have been deposited using a 90{sup o} filter and the S-filter, and macroparticle content of the films are compared.

Anders, S.; Anders, A.; Dickinson, M.R.; MacGill, R.A.; Brown, I.G.

1996-04-01T23:59:59.000Z

464

Sealed One Piece Battery Having A Prism Shape Container  

DOE Patents [OSTI]

A sealed one-piece battery having a prism-shaped container including: a tank consisting of a single plastic material, a member fixed and sealed to the tank and to partitions on the side of the tank opposite the transverse wall to seal the tank, two flanges fixed and sealed to longitudinal walls defining flow compartments for a heat-conducting fluid, and two tubes on the transverse wall of the tank forming an inlet and an outlet for fluid common to the compartments.

Verhoog, Roelof (Bordeaux, FR); Barbotin, Jean-Loup (Pompignac, FR)

2000-03-28T23:59:59.000Z

465

Active control of underwater propulsor using shape memory alloys  

E-Print Network [OSTI]

of submarines10 as control surface deflection tabs and linear actuators in biomimetic hydrofoils11-12. The material chosen in many of these studies and research applications is the Shape Memory Alloy (SMA). This material is attractive due to its small size... section. The water tunnel is powered by a Baldor 25-hp electric motor and with the cross-section specified above allows for a maximum velocity of approximately 1 m/s. To be ab le to obtain reliable data from the test run of the 2-D hydrofoil...

Wasylyszyn, Jonathan Allen

2007-04-25T23:59:59.000Z

466

Topology optimization-based distribution design of actuation voltage in static shape control of plates  

Science Journals Connector (OSTI)

This paper investigates the optimal spatial distribution of single-channel actuation voltage in static structural shape control problem. It is pointed out that single-channel actuation voltage input for shape control applications is of practical importance ... Keywords: Shape control, Single channel, Topology optimization, Voltage distribution

Zhan Kang; Liyong Tong

2008-10-01T23:59:59.000Z

467

Improving DVB-S2 Performancep g Through Constellation Shaping and  

E-Print Network [OSTI]

­ ConclusionConclusion #12;Constellation Shaping ­ Idea: transmit constellation signal points with lower energy on the symbol energy and labelingthe symbol energy and labeling. 01100 11000 11100 ­ Constellation Shaping 10100Improving DVB-S2 Performancep g Through Constellation Shaping and Iterative Demapping

Valenti, Matthew C.

468

Improving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping  

E-Print Network [OSTI]

of increasing average energy and uses a shaping code to select signals from the lower energy sub- constellations more often than the signals from higher energy sub-constellations. Our previous work in [6] on shapingImproving DVB-S2 Performance Through Constellation Shaping and Iterative Demapping Xingyu Xiang

Valenti, Matthew C.

469

Micromechanical modeling of deployment and shape recovery of thin-walled viscoelastic composite space  

E-Print Network [OSTI]

Micromechanical modeling of deployment and shape recovery of thin-walled viscoelastic composite;Micromechanical Modeling of Deployment and Shape Recovery of Thin-walled Viscoelastic Composite Space Structures of the paper presents an experimental study of the deployment and shape recovery of composite tape

Pellegrino, Sergio

470

45 (2008-5) Adjoint-Based Shape Optimization of a Heat-Exchanger Passage  

E-Print Network [OSTI]

conduction is employed. The cost function is defined as a sum of pressure loss and heat transfer, Distribution of non-dimensional heat flux : (c) Initial shape, (d) 6th shape, (e) Cross section of the bottomF244 45 (2008-5) - 623 - Adjoint-Based Shape Optimization of a Heat-Exchanger Passage with Heat

Kasagi, Nobuhide

471

RANS-based Aerodynamic Shape Optimization Investigations of the Common Research Model Wing  

E-Print Network [OSTI]

RANS-based Aerodynamic Shape Optimization Investigations of the Common Research Model Wing Zhoujie of Michigan, Ann Arbor, MI The aerodynamic shape optimization of transonic wings requires Reynolds, and viscous effects. While there has been some research dedicated to RANS-based aerodynamic shape optimiza

Papalambros, Panos

472

J. AMER. SOC. HORT. SCI. 134(1):7787. 2009. Tomato Fruit Shape Analysis Using Morphometric  

E-Print Network [OSTI]

J. AMER. SOC. HORT. SCI. 134(1):77­87. 2009. Tomato Fruit Shape Analysis Using Morphometric of two methods in the detection of quantitative trait loci (QTL) controlling fruit morphology in three uses fruit morphology attributes such as fruit shape index, blockiness, pear shape, indentation area

van der Knaap, Esther

473

Minimum Sized Text Containment Shapes Nathan Hurst, Kim Marriott, and Peter Moulder  

E-Print Network [OSTI]

processing applications. The primary application is to provide generic text contain- ment shapes in diagram their content, but we can also handle fixed size shapes with expandable cut outs. This provides a basis for page headings), or fixed size rectangle or other shape (useful for presentation material in a poster or overhead

Marriott, Kimbal

474

Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni`ere  

E-Print Network [OSTI]

Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni in finding the shape of the tree that minimizes the viscous energy dissipated by the fluid with a constrained on the optimal shape of a dyadic tree in which flows a Newtonian fluid. Our optimization problem consists

Privat, Yannick

475

SoundFLEX: Designing Audio to Guide Interactions with Shape-Retaining Deformable Interfaces  

Science Journals Connector (OSTI)

Shape-retaining freely-deformable interfaces can take innumerable distinct shapes, and creating specific target configurations can be a challenge. In this paper, we investigate how audio can guide a user in this process, through the use of either musical ... Keywords: audio feedback, deformable interfaces, multimodal interaction, shape-retaining interfaces, sonic interaction, sound design

Koray Tahiro?lu, Thomas Svedstrm, Valtteri Wikstrm, Simon Overstall, Johan Kildal, Teemu Ahmaniemi

2014-11-01T23:59:59.000Z

476

SHAPE OPTIMIZATION WITH STOKES CONSTRAINTS OVER THE SET OF AXISYMMETRIC DOMAINS  

E-Print Network [OSTI]

SHAPE OPTIMIZATION WITH STOKES CONSTRAINTS OVER THE SET OF AXISYMMETRIC DOMAINS MAITINE BERGOUNIOUX AND YANNICK PRIVAT Abstract. In this paper, we are interested in the study of shape optimizations problems these assumptions to get some topological properties. We formulate the (shape) optimization problem using different

Paris-Sud XI, Université de

477

Page 1 of 27 Behavior of Compact L-Shaped Spandrel Beams  

E-Print Network [OSTI]

Page 1 of 27 Behavior of Compact L-Shaped Spandrel Beams with Open Web Reinforcement Gregory Lucier-shaped spandrel beams subjected to combined shear and torsion.2-9 An open reinforcement scheme is a better. While the behavior of slender L-shaped beams (having aspect ratios of 4.6 or greater) with open web

478

3D Haptic Modeling System using Ungrounded Pen-shaped Kinesthetic Display  

E-Print Network [OSTI]

3D Haptic Modeling System using Ungrounded Pen-shaped Kinesthetic Display Sho Kamuro 1) Kouta-dimensional (3D) haptic modeling system that enables a user to create 3D models as though he/she is drawing and intuitively create various 3D shapes by drawing closed curves in air using the device. The created shapes

Tachi, Susumu

479

The 1-Jettiness DIS event shape: NNLL + NLO results  

E-Print Network [OSTI]

We present results for the complete NNLL+NLO (~ \\alpha_s) 1-jettiness (\\tau_1) event shape distribution for single jet (J) production in electron-nucleus (N_A) collisions e^- + N_A \\to e^- + J + X, in the deep inelastic scattering (DIS) region where the hard scale is set by the jet transverse momentum P_{J_T}. These results cover the entire \\tau_1-spectrum including the resummation (\\tau_1algorithm, and the fixed-order region where an explicit jet algorithm must be specified. Our code, used for generating the numerical results, is flexible enough to incorporate different jet algorithms for the fixed-order calculation. We also perform a jet shape analysis, defined within the 1-jettiness framework, which allows one to control the amount of radiation included in the definition of the final state jet. This formalism can allow for detailed studies of jet energy-loss mechanisms and nuclear medium effects. The analysis presented here can be used for precision studies of QCD and as a probe of nuclear dynamics using data collected at HERA and in proposed future electron-ion colliders such as the EIC and the LHeC.

Zhong-Bo Kang; Xiaohui Liu; Sonny Mantry

2013-12-02T23:59:59.000Z

480

1-jettiness DIS event shape: NNLL+NLO results  

Science Journals Connector (OSTI)

We present results for the complete NNLL+NLO (??s) 1-jettiness (?1) event shape distribution for single jet (J) production in electron-nucleus (NA) collisions e?+NA?e?+J+X, in the deep inelastic scattering (DIS) region where the hard scale is set by the jet transverse momentum PJT. These results cover the entire ?1 spectrum including the resummation (?1?PJT) and fixed-order (?1?PJT) perturbative QCD regions. They incorporate nonperturbative soft radiation effects, the anti-kT jet algorithm in the fixed-order calculation, and a smooth matching between the resummation and fixed-order perturbative QCD regions. The matching smoothly connects the spectrum in the resummation region, which can be computed without reference to an external jet algorithm, and the fixed-order region where an explicit jet algorithm must be specified. Our code, used for generating the numerical results, is flexible enough to incorporate different jet algorithms for the fixed-order calculation. We also perform a jet-shape analysis, defined within the 1-jettiness framework, which allows one to control the amount of radiation included in the definition of the final state jet. This formalism can allow for detailed studies of jet energy-loss mechanisms and nuclear medium effects. The analysis presented here can be used for precision studies of QCD and as a probe of nuclear dynamics using data collected at HERA and in proposed future electron-ion colliders such as the EIC and the LHeC.

Zhong-Bo Kang; Xiaohui Liu; Sonny Mantry

2014-07-23T23:59:59.000Z

Note: This page contains sample records for the topic "moisture snowflake shapes" 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

Optimal shapes and stresses of adherent cells on patterned substrates  

E-Print Network [OSTI]

We investigate a continuum mechanical model for an adherent cell on two dimensional adhesive micropatterned substrates. The cell is modeled as an isotropic and homogeneous elastic material subject to uniform internal contractile stresses. The build-up of tension from cortical actin bundles at the cell periphery is incorporated by introducing an energy cost for bending of the cell boundary, resulting to a resistance to changes in local curvature. Integrin-based adhesions are modeled as harmonic springs, that pin the cell to adhesive patches of a predefined geometry. Using Monte Carlo simulations and analytical techniques we investigate the competing effects of bulk contractility and cortical bending rigidity in regulating cell shapes on non-adherent regions. We show that the crossover from convex to concave cell edges is controlled by the interplay between contractile stresses and boundary bending rigidity. In particular, the cell boundary becomes concave beyond a critical value of the contractile stress that is proportional to the cortical bending rigidity. Furthermore, the intracellular stresses are found largely concentrated at the concave edge of the cell. The model can be used to generate a cell-shape phase diagram for each specific adhesion geometry.

Shiladitya Banerjee; Rastko Sknepnek; M. Cristina Marchetti

2013-12-24T23:59:59.000Z

482

SHAPE SELECTIVE NANOCATALYSTS FOR DIRECT METHANOL FUEL CELL APPLICATIONS  

SciTech Connect (OSTI)

While gold and platinum have long been recognized for their beauty and value, researchers at the Savannah River National Laboratory (SRNL) are working on the nano-level to use these elements for creative solutions to our nation's energy and security needs. Multiinterdisciplinary teams consisting of chemists, materials scientists, physicists, computational scientists, and engineers are exploring unchartered territories with shape-selective nanocatalysts for the development of novel, cost effective and environmentally friendly energy solutions to meet global energy needs. This nanotechnology is vital, particularly as it relates to fuel cells.SRNL researchers have taken process, chemical, and materials discoveries and translated them for technological solution and deployment. The group has developed state-of-the art shape-selective core-shell-alloy-type gold-platinum nanostructures with outstanding catalytic capabilities that address many of the shortcomings of the Direct Methanol Fuel Cell (DMFC). The newly developed nanostructures not only busted the performance of the platinum catalyst, but also reduced the material cost and overall weight of the fuel cell.

Murph, S.

2012-09-12T23:59:59.000Z

483

Cobalt Nanocrystals as Starting Materials for Shape Modificationand Assembly Formation  

SciTech Connect (OSTI)

Surfactant-coated cobalt nanocrystals can be prepared with areasonable degree of control over particle size and shape using athermolytic route. The small crystallite size, enhanced reactivity andtunable interparticle interactions enable use of this material asstarting material for demonstration of achievement of novel structuresusing extremely simple solution-based approaches. In particular,formation of hollow cobalt sulfide nanocrystals upon chemicalmodification and emergence of long-range orientational order upondrying-mediated assembly of cobalt nanocrystals is reportedhere.Colloidal preparation of Co nanocrystals has been well-studied.Here, we emphasize general principles and crystallographic/morphologicalcharacterization of disk-shaped hcp-Co nanocrystals. Use of surfactantmolecules enables achievement of multiple morphologies in one syntheticsystem.Formation of hollow structures upon in-solution sulfidation of Conanocrystals is presented and discussed. A Kirkendall-type effect,involving dominant outward mass transport during formation of the ionicshell material explains the results naturally. It is expected that thisphenomenon will generalize extensively to formation of hollow structuresof an enormous variety of compositions. Detailed study of particlemorphology as a function of reaction conditions suggest phenomena likelyto be generally relevant to use of this approach. A short report ofcrystallographic co-alignment into vortex-like structures is alsoprovided. Our current best picture of this process involves an interplayof packing and magnetic interactions between facetedparticles.

Erdonmez, Can Kerem

2005-12-20T23:59:59.000Z

484

Optimal Light Beams and Mirror Shapes for Future LIGO Interferometers  

E-Print Network [OSTI]

We report the results of a recent search for the lowest value of thermal noise that can be achieved in LIGO by changing the shape of mirrors, while fixing the mirror radius and maintaining a low diffractional loss. The result of this minimization is a beam with thermal noise a factor of 2.32 (in power) lower than previously considered Mesa Beams and a factor of 5.45 (in power) lower than the Gaussian beams employed in the current baseline design. Mirrors that confine these beams have been found to be roughly conical in shape, with an average slope approximately equal to the mirror radius divided by arm length, and with mild corrections varying at the Fresnel scale. Such a mirror system, if built, would impact the sensitivity of LIGO, increasing the event rate of observing gravitational waves in the frequency range of maximum sensitivity roughly by a factor of three compared to an Advanced LIGO using Mesa beams (assuming all other noises remain unchanged). We discuss the resulting beam and mirror properties and study requirements on mirror tilt, displacement and figure error, in order for this beam to be used in LIGO detectors.

Mihai Bondarescu; Oleg Kogan; Yanbei Chen

2008-06-14T23:59:59.000Z

485

Effect of air flow rate and fuel moisture on the burning behaviours of biomass and simulated municipal solid wastes in packed beds  

Science Journals Connector (OSTI)

Combustion of biomass and municipal solid wastes is one of the key areas in the global cleaner energy strategy. But there is still a lack of detailed and systematically theoretical study on the packed bed burning of biomass and municipal solid wastes. The advantage of theoretical study lies in its ability to reveal features of the detailed structure of the burning process inside a solid bed, such as reaction zone thickness, combustion staging, rates of individual sub-processes, gas emission and char burning characteristics. These characteristics are hard to measure by conventional experimental techniques. In this paper, mathematical simulations as well as experiments have been carried out for the combustion of wood chips and the incineration of simulated municipal solid wastes in a bench-top stationary bed and the effects of primary air flow rate and moisture level in the fuel have been assessed over wide ranges. It is found that volatile release as well as char burning intensifies with an increase in the primary air flow until a critical point is reached where a further increase in the primary air results in slowing down of the combustion process; a higher primary airflow also reduces the char fraction burned in the final char-burning-only stage, shifts combustion in the bed to a more fuel-lean environment and reduces CO emission at the bed top; an increase in the moisture level in the fuel produces a higher flame front temperature in the bed at low primary air flow rates.

Y.B Yang; V.N Sharifi; J Swithenbank

2004-01-01T23:59:59.000Z

486

Electromechanical Mode Shape Estimation Based on Transfer Function Identification Using PMU Measurement  

SciTech Connect (OSTI)

Power system mode shapes are key indication of how dynamic components participate in low-frequency oscillations. Traditionally, mode shapes are calculated from a linearized dynamic model. For large-scale power systems, obtaining accu-rate dynamic models is very difficult. Therefore, measurement-based mode shape estimation methods have certain advantages, especially for the application of real-time small signal stability monitoring. In this paper, a measurement-based mode shape iden-tification method is proposed. The general relationship between transfer function (TF) and mode shape is derived. As an example, a least square (LS) method is implemented to estimate mode shape using an autoregressive exogenous (ARX) model. The per-formance of the proposed method is evaluated by Monte-Carlo studies using simulation data from a 17-machine model. The re-sults indicate the validity of the proposed method in estimating mode shapes with reasonably good accuracy

Zhou, Ning; Huang, Zhenyu; Dosiek, Luke; Trudnowski, Daniel J.; Pierre, John W.

2009-07-30T23:59:59.000Z

487

A novel approach to heat transfer enhancement using trapezoid shaped spiral strips to promote tumble and swirl in a slot shaped channel used in heat exchangers  

E-Print Network [OSTI]

Heat transfer results for a given slot shaped channel with a 3:1 aspect ratio are presented using various configurations of a trapezoid shaped spiral wound strips to enhance swirl and tumble motion in the channel. The Reynolds numbers investigated...

Segura, D.; Acharya, S.

2012-01-01T23:59:59.000Z

488

Shape resonances in low-energy-electron collisions with halopyrimidines  

SciTech Connect (OSTI)

We report calculated cross sections for elastic collisions of low-energy electrons with halopyrimidines, namely, 2-chloro, 2-bromo, and 5-bromopyrimidine. We employed the Schwinger multichannel method with pseudopotentials to compute the cross sections in the static-exchange and static-exchange plus polarization levels of approximation for energies up to 10 eV. We found four shape resonances for each molecule: three of ?* nature localized on the ring and one of ?* nature localized along the carbonhalogen bond. We compared the calculated positions of the resonances with the electron transmission spectroscopy data measured by Modelli et al. [J. Phys. Chem. A 115, 10775 (2011)]. In general the agreement between theory and experiment is good. In particular, our results show the existence of a ?* temporary anion state of A{sub 2} symmetry for all three halopyrimidines, in agreement with the dissociative electron attachment spectra also reported by Modelli et al. [J. Phys. Chem. A 115, 10775 (2011)].

Barbosa, Alessandra Souza; Bettega, Mrcio H. F., E-mail: bettega@fisica.ufpr.br [Departamento de Fsica, Universidade Federal do Paran, Caixa Postal 19044, 81531-990 Curitiba, Paran (Brazil)] [Departamento de Fsica, Universidade Federal do Paran, Caixa Postal 19044, 81531-990 Curitiba, Paran (Brazil)

2013-12-07T23:59:59.000Z

489

Laser pulse-shape dependence of Compton scattering  

E-Print Network [OSTI]

Compton scattering of short and ultra short (sub-cycle) laser pulses off mildly relativistic electrons is considered within a QED framework. The temporal shape of the pulse is essential for the differential cross section as a function of the energy of the scattered photon at fixed observation angle. The partly integrated cross section is sensitive to the non-linear dynamics resulting in a large enhancement of the cross section for short and, in particular, for ultra-short flat-top pulse envelopes which can reach several orders of magnitude, as compared with the case of a long pulse. Such effects can be studied experimentally and must be taken into account in Monte-Carlo/transport simulations of %$e^+e^-$ pair production in the interaction of electrons and photons in a strong laser field.

Alexander I. Titov; Burkhard Kampfer; Takuya Shibata; Atsushi Hosaka; Hideaki Takabe

2014-08-05T23:59:59.000Z

490

Extraction of |Vub| with Reduced Dependence on Shape Functions  

SciTech Connect (OSTI)

Using BABAR measurements of the inclusive electron spectrum in B {yields} X{sub u}e{nu} decays and the inclusive photon spectrum in B {yields} X{sub s}{gamma} decays, we extract the magnitude of the CKM matrix element V{sub ub}. The extraction is based on theoretical calculations designed to reduce the theoretical uncertainties by exploiting the assumption that the leading shape functions are the same for all b {yields} q transitions (q is a light quark). The results agree well with the previous analysis, have indeed smaller theoretical errors, but are presently limited by the knowledge of the photon spectrum and the experimental errors on the lepton spectrum.

Golubev, V

2007-09-28T23:59:59.000Z

491

Robot assisted facial expressions with segmented shape memory alloy actuators  

Science Journals Connector (OSTI)

This paper introduces a robotic technology-based supporting device, the robot mask, to enhance facial expressiveness and support physiotherapy for facial paralysed persons. The wearable device, which consists of shape memory alloy (SMA)-based linear actuators, functions by pulling the facial skin towards anatomically selected directions. Since facial expressions are silent, SMA was selected over electrical motors. This paper introduces a compact and fully controllable actuation unit with position feedback and a novel controlling scenario that uses the selected hybrid actuation of bidirectional multi segment SMA wires in series to pull the wires. When designing the actuators, a biomechanical analysis was conducted to find anatomical parameters of natural smiles, and the robot mask was evaluated for its suitability as a facial expression supporter.

Dushyantha Jayatilake; Kenji Suzuki

2011-01-01T23:59:59.000Z

492

Self-propulsion of V-shape micro-robot  

E-Print Network [OSTI]

In this paper we study the self-propulsion of a symmetric V-shape micro-robot (or V-robot) which consists of three spheres connected by two arms with an angle between them; the arms' lengths and the angle are changing periodically. Using an asymptotic procedure containing two-timing method and a distinguished limit, we obtain analytic expressions for the self-propulsion velocity and Lighthill's efficiency. The calculations show that a version of V-robot, aligned perpendicularly to the direction of self-swimming, is both the fastest one and the most efficient one. We have also shown that such $V$-robot is faster and more efficient than a linear three-sphere micro-robot. At the same time the maximal self-propulsion velocity of V-robots is significantly smaller than that of comparable microorganisms.

Vladimir A. Vladimirov

2012-09-13T23:59:59.000Z

493

High Spin Spectroscopy and Shape Evolution in 105Cd  

E-Print Network [OSTI]

High spin states in 105Cd were studied using 16O beam on 92Mo reaction at an incident beam energy of 75 MeV. The level scheme of 105Cd has been observed up to an excitation energy of 10.8 MeV with the addition of 30 new gamma transitions to the previous work. Spin and parity for most of the reported levels are assigned from the DCO ratios and linear polarization measurements. The microscopic origin of the investigated band structures is discussed in the context of triaxial projected shell model. The energies of observed positive and negative parity bands agree with the predictions of the TPSM by considering triaxial deformation for the observed excited band structures. The shape evolution with increasing angular momentum is explained in the framework of Cranked Shell Model and the Total Routhian Surface calculations.

Raju, M Kumar; Muralithar, S; Singh, R P; Sheikh, J A; Bhat, G H; Kumar, R; Bala, Indu; Trivedi, T; Dhal, A; Rani, K; Gurjar, R; Singh, D; Palit, R; Naidu, B S; Saha, S; Sethi, J; Donthi, R; Jadhav, S

2015-01-01T23:59:59.000Z

494

Shape Selection and Multi-stability in Helical Ribbons  

E-Print Network [OSTI]

Helical structures, almost ubiquitous in biological systems, have inspired the design and manufacturing of helical devices with applications in nanoelecromechanical systems (NEMS), morphing structures, optoelectronics, micro-robotics and drug delivery devices. Meanwhile, multi-stable structures, represented by the Venus flytrap and slap bracelet, have attracted increasing attention due to their applications in making artificial muscles, bio-inspired robots, deployable aerospace components and energy harvesting devices. Here we show that the mechanical anisotropy pertinent to helical deformation, together with geometric nonlinearity associated with multi-stability, can lead to novel selection principle of the geometric shape and multi-stability in spontaneous helical ribbons. Simple table-top experiments were also performed to illustrate the working principle. Our work will promote understanding of spontaneous curling, twisting, wrinkling of thin objects and their instabilities, and serve as a tool in developing functional structures and devices with tunable, morphing geometries and smart actuation mechanism that can be applied in a spectrum of areas.

Qiaohang Guo; Anil K. Mehta; Martha A. Grover; Wenzhe Chen; David G. Lynn; Zi Chen

2013-12-12T23:59:59.000Z

495

Shape memory alloy heat engines and energy harvesting systems  

DOE Patents [OSTI]

A heat engine includes a first rotatable pulley and a second rotatable pulley spaced from the first rotatable pulley. A shape memory alloy (SMA) element is disposed about respective portions of the pulleys at an SMA pulley ratio. The SMA element includes a first wire, a second wire, and a matrix joining the first wire and the second wire. The first wire and the second wire are in contact with the pulleys, but the matrix is not in contact with the pulleys. A timing cable is disposed about respective portions of the pulleys at a timing pulley ratio, which is different than the SMA pulley ratio. The SMA element converts a thermal energy gradient between the hot region and the cold region into mechanical energy.

Browne, Alan L; Johnson, Nancy L; Shaw, John Andrew; Churchill, Christopher Burton; Keefe, Andrew C; McKnight, Geoffrey P; Alexander, Paul W; Herrera, Guillermo A; Yates, James Ryan; Brown, Jeffrey W

2014-09-30T23:59:59.000Z

496

Shape variation of micelles in polymer thin films  

SciTech Connect (OSTI)

The equilibrium properties of block copolymer micelles confined in polymer thin films are investigated using self-consistent field theory. The theory is based on a model system consisting of AB diblock copolymers and A homopolymers. Two different methods, based on the radius of gyration tensor and the spherical harmonics expansion, are used to characterize the micellar shape. The results reveal that the morphology of micelles in thin films depends on the thickness of the thin films and the selectivity of the confining surfaces. For spherical (cylindrical) micelles, the spherical (cylindrical) symmetry is broken by the presence of the one-dimensional confinement, whereas the top-down symmetry is broken by the selectivity of the confining surfaces. Morphological transitions from spherical or cylindrical micelles to cylinders or lamella are predicted when the film thickness approaches the micellar size.

Zhou, Jiajia, E-mail: zhou@uni-mainz.de; Shi, An-Chang, E-mail: shi@mcmaste.ca [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)] [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)

2014-01-14T23:59:59.000Z

497

Kinetically determined shapes of grain boundaries in CVD graphene  

E-Print Network [OSTI]

Predicting the shape of grain boundaries is essential to control results of the growth of large graphene crystals. A global energy minimum search predicting the most stable final structure contradicts experimental observations. Here we present Monte Carlo simulation of kinetic formation of grain boundaries (GB) in graphene during collision of two growing graphene flakes. Analysis of the resulting GBs for the full range of misorientation angles $\\alpha$ allowed us to identify a hidden (from post facto analysis such as microscopy) degree of freedom - the edge misorientation angle $\\beta$. Edge misorientation characterizes initial structure rather than final structure and therefore provides more information about growth conditions. Use of $\\beta$ enabled us to explain disagreements between the experimental observations and theoretical work. Finally, we report an analysis of an interesting special case of zero-tilt GBs for which structure is determined by two variables describing the relative shift of initial isl...

Bets, Ksenia V; Yakobson, Boris I

2014-01-01T23:59:59.000Z

498

Segmented saddle-shaped passive stabilization conductors for toroidal plasmas  

DOE Patents [OSTI]

A large toroidal vacuum chamber for plasma generation and confinement is lined with a toroidal blanket for shielding using modules segmented in the toroidal direction. To provide passive stabilization in the same manner as a conductive vacuum chamber wall, saddle-shaped conductor loops are provided on blanket modules centered on a midplane of the toroidal chamber with horizontal conductive bars above and below the midplane, and vertical conductive legs on opposite sides of each module to provide return current paths between the upper and lower horizontal conductive bars. The close proximity of the vertical legs provided on adjacent modules without making physical contact cancel the electromagnetic field of adjacent vertical legs. The conductive bars spaced equally above and below the midplane simulate toroidal conductive loops or hoops that are continuous, for vertical stabilization of the plasma even though they are actually segmented. 5 figs.

Leuer, J.A.

1990-05-01T23:59:59.000Z

499

Signal detection in temporally modulated and spectrally shaped maskers  

Science Journals Connector (OSTI)

The first part of this paper presents several experiments on signal detection in temporally modulated noise yielding a general approach toward the concept of comodulation masking release (CMR). Measurements were made on masked thresholds of both long? and short?duration narrow?band signals presented in a 100% sinusoidally amplitude?modulated (SAM) noise masker (modulation frequency 32 Hz) as a function of masker bandwidth from 1/3 oct up to 13/3 octs while the masker band was geometrically centered at signal frequency. With the short?duration signals placed in the valley of the masker a substantial CMR (i.e. a decrease of masked threshold with increasing masker bandwidth) was found whereas for the long?duration signals CMR was smaller. Furthermore investigations were carried out to determine whether CMR changes when the bandwidth of the signals consisting of bandpass impulse responses is increased. The data indicate that substantial CMR remains even when all masker bands contain a signal component thus minimizing across?channel differences. This finding is not in line with current models accounting for the CMR phenomenon. The second part of this paper concerns signal detection in spectrally shaped noise. Also investigated was whether release from masking occurs for the detection of a pure?tone signal at a valley or a peak of a simultaneously presented masking noise with a sinusoidally rippled power spectrum when this masker was preceded and followed by a second noise (temporal flanking burst) with an identical spectral shape as the on?signal noise. Similar to CMR effects for temporal modulations the data indicate that coshaping masking release (CSMR) occurs when the signal is placed in a valley of the spectral envelope of the masker whereas no release from masking is found when the signal is placed at a peak of the spectral envelope of the masker. The implications of these experiments for measures of spectral and temporal resolution are discussed.

Willem A. C. van den Brink; Tammo Houtgast; Guido F. Smoorenburg

1992-01-01T23:59:59.000Z

500

Moisture Durability of Vapor Permeable Insulating Sheathing (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)  

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

BUILDING TECHNOLOGIES OFFICE BUILDING TECHNOLOGIES OFFICE Building America Case Study Technology Solutions for New and Existing Homes Moisture Durability of Vapor Permeable Insulating Sheathing PROJECT INFORMATION Construction: Existing homes with vapor open wall assemblies Type: Residential Climate Zones: All PERFORMANCE DATA Insulation Ratio The R-value ratio of exterior to interior insulation (e.g., R-15 exterior insulation on R-11 cavity insulation has a ratio of 0.58). This variable controls sheathing temperature. Vapor Permeable Insulation An insulation with vapor permeance greater than five U.S. perms (e.g., rigid mineral fiber insulations). This variable controls water vapor flow and sheathing temperatures. Water Resisting Barrier A membrane that resists liquid water transfer. Permeable WRBs allow water