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Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Sediment water exchange of trace metals and nutrients in Galveston Bay, Texas.  

E-Print Network [OSTI]

??The benthic fluxes of several trace metals and nutrients were determined for three stations along the salinity gradient in the Trinity Bay region of Galveston… (more)

Warnken, Kent Wayne

2012-01-01T23:59:59.000Z

2

Tropical Pacific nutrient dynamics in the modern and Pleistocene ocean| Insights from the nitrogen isotope system.  

E-Print Network [OSTI]

?? The tropical Pacific is a region where nutrient delivery, upper ocean dynamics, and global climate variability are tightly coupled. For example, the depth of… (more)

Rafter, Patrick Anthony

2009-01-01T23:59:59.000Z

3

Tropical Pacific nutrient dynamics in the modern and pleistocene ocean : insights from the nitrogen isotope system.  

E-Print Network [OSTI]

??The tropical Pacific is a region where nutrient delivery, upper ocean dynamics, and global climate variability are tightly coupled. For example, the depth of the… (more)

Rafter, Patrick Anthony

2009-01-01T23:59:59.000Z

4

Patch Dynamics of Nutrients, Fecal Indicator Bacteria and Chlorophyll near the Tijuana River  

E-Print Network [OSTI]

of a red-tide surface patch in the nearshore JournalDate: 1/31/2013 Title Patch dynamics of nutrients, fecal

Feddersen, Falk; Franks, Peter

2013-01-01T23:59:59.000Z

5

Nutrient dynamics in marsh sediments contaminated by an oil spill following a flood  

E-Print Network [OSTI]

the event. Nutrients monitored include ammonium (plus ammonia), nitrate (plus nitrite), available phosphorus, total Kjeldahl nitrogen and total Kjeldahl phosphorus. Available nutrient concentrations were initially high and then declined to presumed...

Harris, Benjamin Cord

1997-01-01T23:59:59.000Z

6

Seven Data Sets Released from LBA Carbon Dynamics and Trace Gas Teams  

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

Data Sets Released from LBA Carbon Dynamics and Trace Gas Teams Data Sets Released from LBA Carbon Dynamics and Trace Gas Teams The ORNL DAAC and the LBA DIS announce the release of four data sets from the Carbon Dynamics teams and three data sets from the Trace Gas and Aerosol Fluxes science teams, components of the LBA-ECO Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). LBA-ECO CD-02 C and N Isotopes in Leaves and Atmospheric CO2, Amazonas, Brazil . Data set prepared by A.C. de Araujo, J.P.H.B. Ometto, A.J. Dolman, B. Kruijt, M.J. Waterloo and J.R. Ehleringer. This data set reports delta 13C/12C results for leaf tissues and atmospheric carbon dioxide (CO2), delta 15N/14N ratios for leaf tissue, and leaf carbon and nitrogen concentrations along a topographical gradient in old-growth forests near Manaus, Amazonas, Brazil. Also included are coincident

7

Nutrient dynamics at the sediment-water interface in a Mediterranean lagoon (Thau, France): influence of biodeposition by shellfish farming activities  

E-Print Network [OSTI]

1 Nutrient dynamics at the sediment-water interface in a Mediterranean lagoon (Thau, France of the present work was to evaluate the role of this activity on nutrient exchange at the sediment-water interface in relation to organic matter (OM) sedimentation and degradation. Two stations inside (C5

Boyer, Edmond

8

Nutrient acquisition in dinoflagellates: the role of phosphorus and trace metals on community composition in coastal California and the northern Gulf of Alaska  

E-Print Network [OSTI]

of Inorganic and Organic Phosphorous Compounds as Nutrientsof Inorganic and Organic Phosphorous Compounds as Nutrientsof Inorganic and Organic Phosphorous Compounds as Nutrients

Peacock, Melissa Blakely

2013-01-01T23:59:59.000Z

9

Lake eutrophication: Identification of tributary nutrient loading and sediment resuspension dynamics  

Science Journals Connector (OSTI)

In a shallow lake system two problems are of particular significance. It is important to know the distribution of (polluting) nutrient loads among various agricultural and municipal sources within the lake's catchment. It is also important to know what ...

M. B. Beck

1985-11-01T23:59:59.000Z

10

Nutrient (P,?N) dynamics in the southwestern Kattegat, Scandinavia: sedimentation and resuspension effects  

Science Journals Connector (OSTI)

?The yearly nutrient supply from land and atmosphere to the study area in SW Kattegat is 10?900 tons of N and 365 tons of P. This is only few percent of the supply from adjacent marine areas, as the yearly tra...

C. Christiansen; F. Gertz; M. J. C. Laima; L. C. Lund-Hansen…

1997-01-01T23:59:59.000Z

11

Nutrient chemotaxis suppression of a diffusive instability in bacterial colony dynamics Scott Arouh and Herbert Levine  

E-Print Network [OSTI]

on a semisolid agar surface have been observed to form branching patterns as the colony envelope propagates number s : 87.10. e When bacteria are grown on a semisolid agar surface, their resultant colonies have conditions nutrient levels, agar hardness, tem- perature . These include spots and rings in Salmonella typh

Levine, Herbert

12

Towards the SocioScope: an information system for the study of social dynamics through digital traces  

Science Journals Connector (OSTI)

Over the past decade there has been an explosion in the deployment of pervasive systems like cell phone networks and content aggregators on the Internet that produce massive amounts of data as by-products of their interaction with users. This data is ... Keywords: digital traces, social dynamics

Andrea Vaccari; Francesco Calabrese; Bing Liu; Carlo Ratti

2009-11-01T23:59:59.000Z

13

Nutrients, pesticides, surfactants, and trace metals in ground water from the Howe and Mud Lake areas upgradient from the Idaho National Engineering Laboratory, Idaho  

SciTech Connect (OSTI)

Reconnaissance-level sampling for selected nutrients, pesticides, and surfactants in ground water upgradient from the Idaho National Engineering Laboratory was conducted during June 1989. Water samples collected from eight irrigation wells, five domestic or livestock wells, and two irrigation canals were analyzed for nutrients, herbicides, insecticides and polychlorinated compounds, and surfactants. In addition to the above constituents, water samples from one irrigation well, one domestic well, and one irrigation canal were analyzed for arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver. Concentrations of nitrite plus nitrate as nitrogen ranged from less than the reporting to 6.10 mg/L (milligrams per liter), and orthophosphate concentrations as phosphorus ranged from less than the reporting level to 0.070 mg/L (micrograms per liter). Concentrations of 2,4-D in two water samples were 0.1 {mu}g/L and 0.10 {mu}g/L. Water samples analyzed for 15 other herbicides, 10 carbamate insecticides, 11 organophosphorus insecticides, and 15 organochlorine insecticides, gross polychlorinated biphenyls, and gross polychlorinated naphthalenes all had concentration below their reporting levels. Concentrations of surfactants ranged from 0.02 to 0.35 mg/L. Arsenic, barium, chromium, selenium, and silver concentrations exceeded reporting levels in most of the samples. 19 refs., 1 fig., 19 tabs.

Edwards, D.D.; Bartholomay, R.C.; Bennett, C.M.

1990-10-01T23:59:59.000Z

14

EDDY RESOLVING NUTRIENT ECODYNAMICS IN THE GLOBAL PARALLEL OCEAN PROGRAM AND CONNECTIONS WITH TRACE GASES IN THE SULFUR, HALOGEN AND NMHC CYCLES  

SciTech Connect (OSTI)

Ecodynamics and the sea-air transfer of climate relevant trace gases are intimately coupled in the oceanic mixed layer. Ventilation of species such as dimethyl sulfide and methyl bromide constitutes a key linkage within the earth system. We are creating a research tool for the study of marine trace gas distributions by implementing coupled ecology-gas chemistry in the high resolution Parallel Ocean Program (POP). The fundamental circulation model is eddy resolving, with cell sizes averaging 0.15 degree (lat/long). Here we describe ecochemistry integration. Density dependent mortality and iron geochemistry have enhanced agreement with chlorophyll measurements. Indications are that dimethyl sulfide production rates must be adjusted for latitude dependence to match recent compilations. This may reflect the need for phytoplankton to conserve nitrogen by favoring sulfurous osmolytes. Global simulations are also available for carbonyl sulfide, the methyl halides and for nonmethane hydrocarbons. We discuss future applications including interaction with atmospheric chemistry models, high resolution biogeochemical snapshots and the study of open ocean fertilization.

S. CHU; S. ELLIOTT

2000-08-01T23:59:59.000Z

15

TRACING ELECTRON BEAMS IN THE SUN'S CORONA WITH RADIO DYNAMIC IMAGING SPECTROSCOPY  

SciTech Connect (OSTI)

We report observations of type III radio bursts at decimeter wavelengths (type IIIdm bursts)-signatures of suprathermal electron beams propagating in the low corona-using the new technique of radio dynamic imaging spectroscopy provided by the recently upgraded Karl G. Jansky Very Large Array. For the first time, type IIIdm bursts were imaged with high time and frequency resolution over a broad frequency band, allowing electron beam trajectories in the corona to be deduced. Together with simultaneous hard X-ray and extreme ultraviolet observations, we show that these beams emanate from an energy release site located in the low corona at a height below {approx}15 Mm, and propagate along a bundle of discrete magnetic loops upward into the corona. Our observations enable direct measurements of the plasma density along the magnetic loops, and allow us to constrain the diameter of these loops to be less than 100 km. These overdense and ultra-thin loops reveal the fundamentally fibrous structure of the Sun's corona. The impulsive nature of the electron beams, their accessibility to different magnetic field lines, and the detailed structure of the magnetic release site revealed by the radio observations indicate that the localized energy release is highly fragmentary in time and space, supporting a bursty reconnection model that involves secondary magnetic structures for magnetic energy release and particle acceleration.

Chen Bin [Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States); Bastian, T. S. [National Radio Astronomy Observatory, Charlottesville, VA 22903 (United States); White, S. M. [Air Force Research Laboratory, Kirtland Air Force Base, New Mexico, NM (United States); Gary, D. E. [Center for Solar-Terrestrial Research, New Jersey Institute of Technology, Newark, NJ 07102 (United States); Perley, R.; Rupen, M. [National Radio Astronomy Observatory, Socorro, NM 87801 (United States); Carlson, B. [National Research Council of Canada, Penticton, BC V2A 6J9 (Canada)

2013-01-20T23:59:59.000Z

16

Effects of cropping-system-related soil moisture and nutrient dynamics on the sustainability of semiarid dryland agriculture  

E-Print Network [OSTI]

. Information on seasonal dynamics and fluxes in interrelated soil processes, and on profitability, are needed producers for 10 years: Conduct on-farm studies that track soil processes and interactions during four seasonal periods for two years; 2. Link soil process research to field and farm scale production activities

Norton, Jay B.

17

Determination of nanomolar levels of nutrients in seawater  

Science Journals Connector (OSTI)

Abstract Nutrients (phosphate, nitrate, nitrite, ammonium and silicate) exert strong controls on oceanic primary productivity. In oligotrophic areas, which cover approximately 40% of the world's oceans, nutrient concentrations can drop to nanomolar levels or lower due to biological uptake, so highly sensitive methods and technologies are urgently needed for nutrient measurements in such areas. In this work, we review procedures for phosphate and nitrite/nitrate analyses published since the review of Patey et al. [32], and procedures for analysis of ammonium and silicate at nanomolar levels. Our review includes aspects of measurement protocols that bear strongly on the quality of analyses of trace nutrients, including contamination of reagents, sample storage, and preparation of nutrient-free seawater. This review excludes methods that have limits of detection greater than 1?µM, and methods that are not specific to seawater.

Jian Ma; Lori Adornato; Robert H. Byrne; Dongxing Yuan

2014-01-01T23:59:59.000Z

18

The Influence of Microtopography on Soil Nutrients in Created Mitigation Wetlands  

E-Print Network [OSTI]

The Influence of Microtopography on Soil Nutrients in Created Mitigation Wetlands Kurt F. Moser,1- graphy and soil nutrients (and trace elements), comparing results for created and reference wetlands in Virginia, and examining the effects of disking during wetland creation. Replicate multiscale tangentially

19

Global organization of terrestrial plant–nutrient interactions  

Science Journals Connector (OSTI)

...needed guidance for efforts underway to incorporate N and P dynamics within the terrestrial component of coupled earth system models (13). Inclusion of explicit mechanisms of plant–nutrient interactions will better enable these models to simulate...

Lars O. Hedin

2004-01-01T23:59:59.000Z

20

Spatial variations in soil and plant delta 13 C and delta 15 N values in a subtropical savanna: implications for vegetation change and nutrient dynamics  

E-Print Network [OSTI]

lower-lying portions of the landscape are dominated by closed-canopy woodlands. I used soil ?13C in conjunction with aerial photography and geostatistics to quantify landscape-scale vegetation dynamics in uplands of this savanna parkland. Spatial...

Bai, E

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Urban nUtrient Urban nUtrient  

E-Print Network [OSTI]

Urban nUtrient ManageMent Handbook #12;#12;Urban nUtrient ManageMent Handbook Content Coordinators of the Virginia Department of Conservation and Recreation. May 2011 #12;#12;Urban Nutrient Management Handbook I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Soil Physical Properties

Liskiewicz, Maciej

22

EMSL - trace metals  

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

trace-metals en Microbial Reductive Transformation of Phyllosilicate Fe(III) and U(VI) in Fluvial Subsurface Sediments. http:www.emsl.pnl.govemslwebpublications...

23

Pennsylvania Nutrient Management Specialist Certification Program  

E-Print Network [OSTI]

and overview to the Act 38 regulatory requirements for nutrient management planning. During this session key for the Plan Writing and Plan Review Workshops. Stormwater & P Index Workshop April 17-18, 2013 All commercial nutrient management planning resources are distributed. #12;v.06.2011 Managing Manure Nutrients Workshop

Guiltinan, Mark

24

CGC Trace Species Partitioning  

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

Trace Species Partitioning as Affected Trace Species Partitioning as Affected by Cold Gas Cleanup Conditions: A Thermodynamic Analysis February 10, 2011 DOE/NETL-2011/1503 T r ace Species P ar titioning at C old G as C leanup C onditions Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name,

25

Parallel Seismic Ray Tracing  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . 27 3.4.1 Rotated Take-Off Angle Mesh . . . . . . . . . . . . . . . . . . 28 3.4.2 Rotated Cubed Sphere Mesh . . . . . . . . . . . . . . . . . . . 29 3.4.3 Ray Tube Interpolation . . . . . . . . . . . . . . . . . . . . . . 30 3.5 Theoretical Model..., the ray parameters are defined as ?1 = ?(declination), ?2 = ?(azimuth), and ?3 = ?(travel-time). (b) Suppose we have a unit cube centered at the source point, then a ray can be traced from the source point through an evenly discretized point on the face...

Jain, Tarun K

2013-12-09T23:59:59.000Z

26

Dynamic  

Office of Legacy Management (LM)

Dynamic Dynamic , and Static , Res.ponse of the Government Oil Shale Mine at ' , . , Rifle, Colorado, to the Rulison Event. , . ; . . DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. p ( y c - - a 2-1 0 -4- REPORT AT (29-2) 914 USBM 1 0 0 1 UNITED STATES DEPARTMENT O F THE I NTERIOR BUREAU OF MINES e s.09 P. L. R U S S E L L RESEARCH D l RECTOR Februory 2, lB7O DYNAMIC AND STATIC RESPONSE 'OF THE GOVERNMENT OIL SHALE MINE A T RIFLE, COLORADO, T O THE, RULISON EVENT ORDER FROM CFSTl A S ~ B ~ &J C / This page intentionally left blank CONTENTS Page . . . . . . . . . . . . . . . . . . . . . . . . . H i s t o r i c . a l Des c r i p t i o n 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 3

27

Nutrient Management Module No. 12 Water Quality  

E-Print Network [OSTI]

Nutrient Management Module No. 12 Water Quality Considerations and Regulations by Susan Mc Management Competency Area II: Nutrient movement in soil and water. Objectives After completing this module issues 3.Become familiar with federal and state water quality regulations 4.Identify Best Management

Lawrence, Rick L.

28

Export of Asian pollution during two cold front episodes of the TRACE-P experiment  

E-Print Network [OSTI]

of the Asian outflow by fragmenting the pollution plume. INDEX TERMS: 0365 Atmospheric Composition and Atmospheric Dynamics: Mesoscale meteorology; KEYWORDS: warm conveyor belt, TRACE-P, pollution Citation: MariExport of Asian pollution during two cold front episodes of the TRACE-P experiment C. Mari

Palmer, Paul

29

Validation of a Model of a Resonant Optothermoacoustic Trace Gas Sensor  

E-Print Network [OSTI]

Validation of a Model of a Resonant Optothermoacoustic Trace Gas Sensor N. Petra1, J. Zweck1, S. E, Rice University, Houston, TX 77005, USA E-mail: zweck@umbc.edu Abstract: A model for a resonant. At low concentrations, the molecular dynamics of the trace gas do not influence the signal. © 2010

Minkoff, Susan E.

30

Original article Biomass, litterfall and nutrient content in  

E-Print Network [OSTI]

Original article Biomass, litterfall and nutrient content in Castanea sativa coppice stands November 1995) Summary - Aboveground biomass and nutrient content, litterfall and nutrient return) and Catania (Italy). Best regression equations for the aboveground biomass were obtained by applying the allo

Paris-Sud XI, Université de

31

Dynamics  

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

Hydration Hydration Water on Rutile Studied by Backscattering Neutron Spectroscopy and Molecular Dynamics Simulation E. Mamontov,* ,† D. J. Wesolowski, ‡ L. Vlcek, § P. T. Cummings, §,| J. Rosenqvist, ‡ W. Wang, ⊥ and D. R. Cole ‡ Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6473, Chemical Sciences DiVision, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6110, Department of Chemical Engineering, Vanderbilt UniVersity, NashVille, Tennessee 37235-1604, Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6496, and EnVironmental Sciences DiVision, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6036 ReceiVed: December 20, 2007; ReVised Manuscript ReceiVed: June 4, 2008 The high energy resolution, coupled with the wide dynamic range, of the new backscattering

32

Heat-Traced Fluid Transfer Lines  

E-Print Network [OSTI]

This paper discusses basic considerations in designing a heat tracing system using either team or electrical tracing. Four basic reasons to heat trace are dealt with: water freeze protection, chemical freeze protection, viscosity maintenance...

Schilling, R. E.

1984-01-01T23:59:59.000Z

33

Tracing Geothermal Fluids  

SciTech Connect (OSTI)

Geothermal water must be injected back into the reservoir after it has been used for power production. Injection is critical in maximizing the power production and lifetime of the reservoir. To use injectate effectively the direction and velocity of the injected water must be known or inferred. This information can be obtained by using chemical tracers to track the subsurface flow paths of the injected fluid. Tracers are chemical compounds that are added to the water as it is injected back into the reservoir. The hot production water is monitored for the presence of this tracer using the most sensitive analytic methods that are economically feasible. The amount and concentration pattern of the tracer revealed by this monitoring can be used to evaluate how effective the injection strategy is. However, the tracers must have properties that suite the environment that they will be used in. This requires careful consideration and testing of the tracer properties. In previous and parallel investigations we have developed tracers that are suitable from tracing liquid water. In this investigation, we developed tracers that can be used for steam and mixed water/steam environments. This work will improve the efficiency of injection management in geothermal fields, lowering the cost of energy production and increasing the power output of these systems.

Michael C. Adams; Greg Nash

2004-03-01T23:59:59.000Z

34

ARM - Measurement - Trace gas concentration  

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

govMeasurementsTrace gas concentration govMeasurementsTrace gas concentration 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 : Trace gas concentration The amount per unit volume of trace gases other than carbon dioxide, ozone and water vapor, typically measured in conjunction with in situ aerosol measurements, e.g. carbon monoxide, nitrogen oxides, sulfur dioxide. Categories Atmospheric Carbon, 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 CO : Carbon Monoxide Mixing Ratio System

35

Trace 700 | Open Energy Information  

Open Energy Info (EERE)

Trace 700 Trace 700 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Trace 700 Agency/Company /Organization: Trane Sector: Energy Focus Area: Buildings, Energy Efficiency Topics: Technology characterizations Resource Type: Software/modeling tools Website: www.trane.com/Commercial/Dna/View.aspx?i=1136 References: http://www.trane.com/Commercial/Dna/View.aspx?i=1136 Detailed HVAC design tool. Can provide heating and cooling load calculation, system sizing, and energy use. A fairly thorough understanding of HVAC is necessary to use this tool. Tool Summary LAUNCH TOOL Name: Trace 700 Agency/Company /Organization: Trane Phase: Create a Vision, Determine Baseline, "Evaluate Options and Determine Feasibility" is not in the list of possible values (Bring the Right People Together, Create a Vision, Determine Baseline, Evaluate Options, Develop Goals, Prepare a Plan, Get Feedback, Develop Finance and Implement Projects, Create Early Successes, Evaluate Effectiveness and Revise as Needed) for this property.

36

Sediment water exchange of trace metals and nutrients in Galveston Bay, Texas  

E-Print Network [OSTI]

with an average value of-2391?37. Diffusive fluxes of P04 3-ranged from 0 to-28.6 gmoles/@/day and averaged-99?. The diffusive fluxes of N03-1 Si(OH)41 Cl-and S04 2-changed in magnitude and direction in response to reduced river flow and increased coastal inputs...

Warnken, Kent Wayne

2012-06-07T23:59:59.000Z

37

Tracing anthropogenic nutrient inputs to coastal plain ponds using stable Wayne Daniel1  

E-Print Network [OSTI]

is to determine if invasive species Phragmites australis is dependent on sewage derived nitrogen using stable tissues in Duck Pond expressed elevated del 15 N values. Del 15 N of and Phragmites australis suggested colonization. Phragmites australis is know in North America as the common reed, but has a genetic lineage

Vallino, Joseph J.

38

Nutrient Management Educational & Planning Resources The Pennsylvania Nutrient Management Education Program provides a wide array of resources  

E-Print Network [OSTI]

consistently in the development and review of nutrient management plans. There are two comprehensive Planning References are used extensively by nutrient management specialists while developing and reviewing. Included are the required standard formats for both the nutrient management plan and nutrient balance

Guiltinan, Mark

39

Nutrient Management in TexasNutrient Management in Texas Sam FeagleySam Feagley  

E-Print Network [OSTI]

·· Waste Utilization PlanWaste Utilization Plan ­­ Nutrient Utilization PlanNutrient Utilization Plan, clovers, ryegrass, alfalfa, sweet potatoes,clovers, ryegrass, alfalfa, sweet potatoes, petunia, roses, K, S, Zn, Fe, B, Mg, Ca, ClCl ·· SalinitySalinity ·· Animal manures, wastes and effluents

40

Nutrient Management Module No. 15 Sustainable  

E-Print Network [OSTI]

Nutrient Management Module No. 15 Sustainable Agriculture by Ann McCauley, Soil Scientist, Clain for those wanting more in-depth information about sustainable agriculture. This module covers Rocky Mountain Source and Applications, with the focus on sustainable agriculture. Objectives After reading this module

Lawrence, Rick L.

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Cell signalling: Nutrient sensing lost in cancer  

Science Journals Connector (OSTI)

... and cancer. Reporting in Science, Bar-Peled et al. identify a protein complex called GATOR that is crucial for linking nutrient sensing by the cell to the control of cell ... cells disconnect their growth from normal growth-control signals. Bar-Peled et al. identify GATOR as a crucial regulator of Rag proteins. They show that this protein complex is ...

Suchithra Menon; Brendan D. Manning

2013-06-26T23:59:59.000Z

42

Effect of Nutrient Periodicity on Microbial Community Dynamics  

Science Journals Connector (OSTI)

...room temperature, and the supernatant fraction was analyzed. An aliquot (100 to 500...above. The activity of the supernatant fraction was subtracted from the total activity...breakdown, microbial respiration and shredder production in metal-polluted streams...

Militza Carrero-Colón; Cindy H. Nakatsu; Allan Konopka

2006-05-01T23:59:59.000Z

43

Specifying API Trace Birthmark by Abstract Interpretation  

Science Journals Connector (OSTI)

API trace birthmark is a major class of software birthmarks, where API sequences are defined as software birthmarks to ... , an abstract interpretation-based method for specifying API trace birthmark is proposed ...

Ying Zeng; Fenlin Liu; Jian Chen; Bin Yan

2013-01-01T23:59:59.000Z

44

Distributed trace using central performance counter memory  

DOE Patents [OSTI]

A plurality of processing cores, are central storage unit having at least memory connected in a daisy chain manner, forming a daisy chain ring layout on an integrated chip. At least one of the plurality of processing cores places trace data on the daisy chain connection for transmitting the trace data to the central storage unit, and the central storage unit detects the trace data and stores the trace data in the memory co-located in with the central storage unit.

Satterfield, David L; Sexton, James C

2013-10-22T23:59:59.000Z

45

Stoichiometric patterns in foliar nutrient resorption across multiple scales  

E-Print Network [OSTI]

ratios of weathered tropical soils maintained the lowest N : P of spatial scales, complementing other metrics of plant nutrient biogeochemistry. The extent to which of potential limitation status. Some previous efforts to identify such metrics have focused on foliar nutrient

Townsend, Alan

46

Privacy vulnerability of published anonymous mobility traces  

Science Journals Connector (OSTI)

Mobility traces of people and vehicles have been collected and published to assist the design and evaluation of mobile networks, such as large-scale urban sensing networks. Although the published traces are often made anonymous in that the true identities ... Keywords: mobility traces, privacy, security and protection

Chris Y. T. Ma; David K. Y. Yau; Nung Kwan Yip; Nageswara S. V. Rao

2013-06-01T23:59:59.000Z

47

Ray Tracing JELLO Brand Paul S. Heckbert  

E-Print Network [OSTI]

Ray Tracing JELL­O ® Brand Gelatin Paul S. Heckbert Dessert Foods Division Pixar San Rafael, CA ABSTRACT Ray tracing has established itself in recent years as the most general image synthesis algorithm for ray tracing Jell­O ® brand gelatin. We believe the method may have application to other brands

Treuille, Adrien

48

Point-to-curve ray tracing  

Science Journals Connector (OSTI)

Point-to-curve ray tracing is an attempt at dealing with multiplicity of solutions to a generic boundary-value problem of ray tracing. In a point-to-curve tracing (P2C) the input parameters of the boundary-value....

Andrzej Hanyga

1996-01-01T23:59:59.000Z

49

Point-to-curve Ray Tracing  

Science Journals Connector (OSTI)

Point-to-curve ray tracing is an attempt at dealing with multiplicity of solutions to a generic boundary-value problem of ray tracing. In a point-to-curve tracing (P2C) the input parameters of the boundary-value....

Andrzej Hanyga

1996-01-01T23:59:59.000Z

50

Temperature and nutrient supply interact to control nitrogen fixation ...  

Science Journals Connector (OSTI)

Temperature and nutrient supply interact to control nitrogen fixation in oligotrophic streams: An experimental examination. Marcarelli, Amy M., Wayne A.

51

The gastrointestinal tract as a nutrient-balancing organ  

Science Journals Connector (OSTI)

...bars and grey arrow on each graph show the relative differences...influences over proliferating cell nuclear antigen expression in the locust...nutrients engenders fitness costs. Maintaining nutrient balance...nutrient gain in relation to costs of maintaining the GIT; our...

2010-01-01T23:59:59.000Z

52

Original article Belowground biomass and nutrient content in a  

E-Print Network [OSTI]

Original article Belowground biomass and nutrient content in a 47-year-old Douglas-fir plantation, France (Received 17 July 2000; accepted 6 October 2000) Abstract ­ Biomass and nutrient content and root biomass or nutrient content were observed. The root biomass was 58 t of dry matter, which was 18

Paris-Sud XI, Université de

53

Original article Biomass and nutrient cycling of a highly productive  

E-Print Network [OSTI]

Original article Biomass and nutrient cycling of a highly productive Corsican pine stand on former 14 April; accepted 22 September 1997) Abstract - Biomass and nutrient cycling were examined in a 62 on a coarse and dry sandy soil with low exchangeable nutrient pools. Total aboveground biomass was estimated

Paris-Sud XI, Université de

54

NUTRIENT INVERSIONS IN THE SOUTHEASTERN TROPICAL PACIFIC OCEAN 1.2  

E-Print Network [OSTI]

the nutrients were depleted by phytoplankton and has then sunk below high-nutrient and relatively fresh water

55

Nutrient Needs at a Glance (Spanish)  

E-Print Network [OSTI]

Necesidades nutricionales a simple vista Promotores Especialistas en Nutrici?n El Sistema Universitario Texas A&M Glosario Insumo adecuado a veces se usa en lugar de RDA (AI): Anorexia: p?rdida del apetito Antioxidante: una sustancia que evita... padecimiento del ojo que puede causar ceguera Obras de Referencia Datos recopilados de ?Dietary Reference Intakes for Nutrients Reports? (http://nap.edu), the Food and Nutrition Board, National Academy of Sciences. Washington, DC: National Academy Press, 1997...

Bielamowicz, Mary K.

2003-02-10T23:59:59.000Z

56

Optimizing nutrient management for farm systems  

Science Journals Connector (OSTI)

...various K-containing minerals. Recycling of animal...already present. Using mineral N measurements and a...wheat), maintain a green cover as much as is practicable...trace elements, use lime to maintain the appropriate...simulation of changes in soil mineral nitrogen and crop nitrogen...

2008-01-01T23:59:59.000Z

57

Adsorptive Stripping Voltammetric Measurements of Trace Uranium...  

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

Measurements of Trace Uranium at the Bismuth Film Electrode. Abstract: Bismuth-coated carbon-fiber electrodes have been successfully applied for adsorptive-stripping...

58

Accelerated Ray Traced Animations Exploiting Temporal Coherence.  

E-Print Network [OSTI]

??Ray tracing is a well-know technique for producing realistic graphics. However, the time necessary to generate images is unacceptably long. When producing the many frames… (more)

Baines, Darwin Tarry

2005-01-01T23:59:59.000Z

59

USDA National Nutrient Database for Standard Reference, Release 22 |  

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

USDA National Nutrient Database for Standard Reference, Release 22 USDA National Nutrient Database for Standard Reference, Release 22 Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data USDA National Nutrient Database for Standard Reference, Release 22 Dataset Summary Description The USDA Nutrient Database for Standard Reference, Release 22 (SR22) is the major source of food composition data in the United States and provides the foundation for most public and private sector databases. SR22 contains nutrient data for over 7,500 food items for up to 143 food components, such as vitamins, minerals, amino acids, and fatty acids. It replaces the previous release, Tags {"food composition","nutrient compostion"}

60

Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after  

E-Print Network [OSTI]

Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after@kom.aau.dk Abstract-- Currently available video traces for scalable en- coded video with more than one layer are a convenient repre- sentation of the encoded video for the evaluation of networking mechanisms. The video

Reisslein, Martin

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after  

E-Print Network [OSTI]

1 Layered Video Coding Offset Distortion Traces for Trace-Based Evaluation of Video Quality after video traces for scalable encoded video with more than one layer are a convenient representation of the encoded video for the evaluation of networking mechanisms. The video distortion (RMSE) or quality (PSNR

Reisslein, Martin

62

MACKAY, NEIL A., AND JAMES J. ELSER. Nutrient recycling by ...  

Science Journals Connector (OSTI)

Nutrient recycling by Daphnia reduces N, fixation by cyanobacteria. ,,,,iimentally e”tro phied lake ..... Standard methods for the examination of wastewater. APHA.

2000-10-07T23:59:59.000Z

63

Nutrient and temperature control of the contribution of picoplankton ...  

Science Journals Connector (OSTI)

temperature control (adjusted to the in situ water tempera- ture). After 3 h of ..... at which molecular diffusion can supply nutrients to the cell surface (Munk and ...

2000-04-13T23:59:59.000Z

64

Seasonal trends in growth and biomass accumulation of selected nutrients and metals in six species of emergent aquatic macrophytes  

SciTech Connect (OSTI)

Growth and biomass accumulation of selected nutrients and trace metals were monitored for six species of aquatic macrophytes during June, August and November, 1993. Plant species were cultivated in two polyculture treatments, each replicated three times. Polyculture I consisted of Scirpus acutus (hardstem bullrush), Phragmites communes (common reed), and Phalaris arundinacea (canary grass). Polyculture H consisted of Typha spp. (cattail), Scirpus atrovirens (green bullrush), and Scirpus cyperinus (wool grass). Each of the six cells (6 x 9 x 0.6 m), was operated as a gravel-substrate, subsurface-flow wetlands in a continuous recirculating mode. At six week intervals, macro, micro and trace elements were dissolved and added to the sump of the recirculating system. On each of three sampling dates, replicate shoot and root samples were collected, segregated by species and tissue type (roots, rhizomes, stems and leaves), and prepared for gravimetric biomass estimates and chemical analysis. Tissue specific concentrations of N, P, K, Ca, Mg, Fe, Mn, Zn and Cu, were determined on each date for each species and tissue type. Results will be discussed with respect to species specific growth rates, biomass accumulation, and seasonal uptake and translocation of plant nutrients.

Behrends, L.L.; Bailey, E.; Bulls, M.J.; Coonrod, H.S.; Sikora, F.J.

1996-05-01T23:59:59.000Z

65

Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions...  

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

Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube Nanoelectrode Array. Ultrasensitive Voltammetric Detection of Trace Heavy Metal Ions Using Carbon Nanotube...

66

Infrared near-field spectroscopy of trace explosives using an...  

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

spectroscopy of trace explosives using an external cavity quantum cascade laser. Infrared near-field spectroscopy of trace explosives using an external cavity quantum...

67

Asynchronous BVH Construction for Ray Tracing Dynamic Scenes  

E-Print Network [OSTI]

in a disruption of interactive system response. We present a method that removes this gradual decline is no longer efficient, but this rebuild results in a disruption of interactive system response. We present power has led to improvements of rasterization-based GPUs. This quest has also reignited an interest

Utah, University of

68

Extraction of trace metals from fly ash  

DOE Patents [OSTI]

A process is described for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous. The fly ash has a silicate base and contains surface deposits of the trace metals as oxides, chlorides or the like. The process is carried out by contacting the fly ash with AlCl/sub 3/ in an alkali halide melt to react the trace metals with the AlCl/sub 3/ to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, M.; Wai, C.M.; Nagy, Z.

1983-08-15T23:59:59.000Z

69

Extraction of trace metals from fly ash  

DOE Patents [OSTI]

A process for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous, the fly ash having a silicate base and containing surface deposits of the trace metals as oxides, chlorides or the like, with the process being carried out by contacting the fly ash with AlCl.sub.3 in an alkali halide melt to react the trace metals with the AlCl.sub.3 to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, Milton (Palos Park, IL); Wai, Chien M. (Moscow, ID); Nagy, Zoltan (Woodridge, IL)

1984-01-01T23:59:59.000Z

70

CP-violating CFT and trace anomaly  

E-Print Network [OSTI]

It is logically possible that the trace anomaly in four dimension includes the Hirzebruch-Pontryagin density in CP violating theories. Although the term vanishes at free conformal fixed points, we realize such a possibility in the holographic renormalization group and show that it is indeed possible. The Hirzebruch-Pontryagin term in the trace anomaly may serve as a barometer to understand how much CP is violated in conformal field theories.

Yu Nakayama

2012-01-17T23:59:59.000Z

71

E-Print Network 3.0 - assess dietary nutrients Sample Search...  

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

Summary: to nutrient intake, for describing key nutritional traits and assessing trade-offs between life... require numerous nutrients in particular amounts and ratios to...

72

E-Print Network 3.0 - acquisition mechanisms nutrient Sample...  

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

Nutrient Management Module No. 2 Plant Nutrition and Soil Fertility by Clain Jones and Jeff... pertinent information on a variety of nutrient management, water management, and...

73

Nutrient load analysis of Lago de Yojoa, Honduras  

E-Print Network [OSTI]

Lake Yojoa, Honduras is an important natural resource to the people of Honduras. The lake's water quality has been a controversial subject. This thesis describes a nutrient load analysis performed to gain a better understanding ...

Trate, Tia M. (Tia Marie)

2006-01-01T23:59:59.000Z

74

Benthic exchange of nutrients in Galveston Bay, Texas  

Science Journals Connector (OSTI)

Nutrient regeneration rates were determined at three sites increasing in distance from the Trinity River, the main freshwater input source, to Galveston Bay, Texas, from 1994 through 1996. Diffusive fluxes ... be...

Kent W. Warnken; Gary A. Gill; Peter H. Santschi; Lawrence L. Griffin

2000-10-01T23:59:59.000Z

75

Uncertainty associated with probabilistic prediction of nutrient transport by runoff  

E-Print Network [OSTI]

and estimating the probability and severity of potential hazards to water quality. The objective of this research was to use PRA to characterize the uncertainty associated with probabilistic determination of the nutrient transport by runoff at two dairies.... Simple simulation models were used to determine the rainfall runoff probability and lagoon overflow probabilities. Phosphorous index method in combination with nutrient application rates and soil test levels was used to determine the presence oF excess...

Jain, Mohit

1996-01-01T23:59:59.000Z

76

Nutrient Management Specialist or Broker Signature The following appendices need to accompany the Nutrient Balance Worksheets if applicable  

E-Print Network [OSTI]

removal (Row A) and should not be used to determine additional fertilizer needs. Nutrient balances for P2O5 and K2O are based on crop removal (Row A) and should not be used to determine additional

Guiltinan, Mark

77

Trace Element Analysis | Open Energy Information  

Open Energy Info (EERE)

Trace Element Analysis Trace Element Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Trace Element Analysis Details Activities (8) Areas (8) Regions (4) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Reconstructing the fluid circulation of a hydrothermal system Thermal: Cost Information Low-End Estimate (USD): 15.001,500 centUSD 0.015 kUSD 1.5e-5 MUSD 1.5e-8 TUSD / element Median Estimate (USD): 18.001,800 centUSD 0.018 kUSD 1.8e-5 MUSD 1.8e-8 TUSD / element High-End Estimate (USD): 106.0010,600 centUSD 0.106 kUSD 1.06e-4 MUSD 1.06e-7 TUSD / element

78

Ray tracing of Jovian kilometric radiation  

SciTech Connect (OSTI)

Results of computer ray tracing of Jovian kilometric from 56.2 kHz to 1 MHz in a model Jovian magnetosphere with an Io torus are presented. Ray tracing calculations indicate that the Io torus presents a propagation barrier to the radiation and that the Jovian kilometric radiation must be generated in the L-O mode from a source near Jupiter on field lines passing through the Io torus. One effect of the Io torus is to refract the rays away from the magnetic equator forming a shadow zone at radial distances beyond the torus. In general, at radial distances greater than 10 Jovian radii, as the wave frequency increases (>200 kHz) so does the magnetic latitude of the shadow zone. These and other features of the ray tracing calculations are in good qualitative agreement with the observations from the plasma wave receiver and planetary radio astronomy experiment on board both Voyager 1 and 2.

Green, J.L.; Gurnett, D.A.

1980-01-01T23:59:59.000Z

79

Pennsylvania Act 38/Nutrient Management Program/Technical Manual January 2014  

E-Print Network [OSTI]

on additional water conveyance areas than those outlined in the Chapter 83 nutrient management regulaPennsylvania Act 38/Nutrient Management Program/Technical Manual January 2014 Appendix 1 Nutrient Management Plan Agreement and Responsibilities ­ Page 1 Appendix 1 Nutrient Management Plan Agreement

Guiltinan, Mark

80

Building Energy Software Tools Directory: TRACE 700  

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

700 700 TRACE 700 logo. Trane's TRACE 700 software - the latest version of Trane Air Conditioning Economics - brings the algorithms recommended by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to the familiar Windows operating environment. Use it to assess the energy and economic impacts of building-related selections such as architectural features, comfort-system design, HVAC equipment selections, operating schedules, and financial options. Flexible data entry, coupled with multiple views and "drag-and-drop" load assignments, simplify the modeling process and help you identify optimal zoning and plant configurations. Compare up to four alternatives for a single project by modeling various air distribution and mechanical

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Trace fossil assemblages in selected shelf sandstones  

E-Print Network [OSTI]

with progradation of the delta. The presence of trace fossils throughout the section, as compared to the lack of burrows in the upper unit of the True Watt A-1 section, can be attributed to the marginal location of the deposits. Santa Fe 13 and Santa Fe 10... with progradation of the delta. The presence of trace fossils throughout the section, as compared to the lack of burrows in the upper unit of the True Watt A-1 section, can be attributed to the marginal location of the deposits. Santa Fe 13 and Santa Fe 10...

Locke, Kathleen Ann

2012-06-07T23:59:59.000Z

82

Probing non-Born-Oppenheimer dynamics and conical intersections in polyatomic molecules using two-color femtosecond XUV pulses  

Science Journals Connector (OSTI)

We measured correlated photoions and photoelectrons in a violet ultraviolet pump and extreme ultraviolet probe scheme to trace the non-Born-Oppenheimer dynamics of isomerization of...

Belkacem, Ali

83

Critical dynamics of nonperiodic Ising chains  

Science Journals Connector (OSTI)

The critical dynamics of the nonperiodic ferromagnetic Ising chains with two different coupling constants (J1>J2>0) arranged in nonperiodic sequences are studied by trace map method. For Glauber dynamics, it is found that the dynamical critical exponent z=1+J1/J2 for the Fibonacci, general Fibonacci (e.g., silver-mean, copper-mean), and period-doubling ferromagnetic Ising chains. The applicability of the trace map method and the origin of the nonuniversality are briefly discussed.

Peiqing Tong

1997-08-01T23:59:59.000Z

84

Tracing compressed curves in triangulated surfaces  

Science Journals Connector (OSTI)

A simple path or cycle in a triangulated surface is normal if it intersects any triangle in a finite set of arcs, each crossing from one edge of the triangle to another. We describe an algorithm to "trace" a normal curve in O(min set{X, n2log ... Keywords: computational topology, geodesics, normal coordinates

Jeff Erickson; Amir Nayyeri

2012-06-01T23:59:59.000Z

85

Amounts of Trace Elements in Marine Cephalopods  

Science Journals Connector (OSTI)

......Amounts of Trace Elements in Marine Cephalopods T. Ueda * M. Nakahara...H. Suzuki ** * Division of Marine Radioecology, National Institute...Power Reactor and Nuclear Fuel Development Cooperation, Tokyo...Co and Cs in 5 species of marine cephalopods were determined......

T. Ueda; M. Nakahara; T. Ishii; Y. Suzuki; H. Suzuki

1979-12-01T23:59:59.000Z

86

Method and apparatus for determining nutrient stimulation of biological processes  

DOE Patents [OSTI]

A method and apparatus are disclosed for determining the nutrients to stimulate microorganisms in a particular environment. A representative sample of microorganisms from a particular environment are contacted with multiple support means wherein each support means has intimately associated with the surface of the support means a different nutrient composition for microorganisms in the sample. The multiple support means is allowed to remain in contact with the microorganisms in the sample for a time period sufficient to measure difference in microorganism effects for the multiple support means. Microorganism effects for the multiple support means are then measured and compared. The invention is particularly adaptable to being conducted in situ. The additional steps of regulating nutrients added to the particular environment of microorganisms can enhance the desired results. Biological systems particularly suitable for this invention are bioremediation, biologically enhanced oil recovery, biological leaching of metals, and agricultural bioprocesses. 5 figs.

Colwell, F.S.; Geesey, G.G.; Gillis, R.J.; Lehman, R.M.

1999-07-13T23:59:59.000Z

87

Method and apparatus for determining nutrient stimulation of biological processes  

DOE Patents [OSTI]

A method and apparatus is described for determining the nutrients to stimulate microorganisms in a particular environment. A representative sample of microorganisms from a particular environment are contacted with multiple support means wherein each support means has intimately associated with the surface of the support means a different nutrient composition for said microorganisms in said sample. The multiple support means is allowed to remain in contact with the microorganisms in the sample for a time period sufficient to measure differences in microorganism effects for the multiple support means. Microorganism effects for the multiple support means are then measured and compared. The invention is particularly adaptable to being conducted in situ. The additional steps of regulating nutrients added to the particular environment of microorganisms can enhance the desired results. Biological systems particularly suitable for this invention are bioremediation, biologically enhanced oil recovery, biological leaching of metals, and agricultural bioprocesses. 5 figs.

Colwell, F.S.; Geesey, G.G.; Gillis, R.J.; Lehman, R.M.

1997-11-11T23:59:59.000Z

88

E-Print Network 3.0 - atmospheric trace element Sample Search...  

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

Summary: 6 2.0 Sources and Deposition of Trace Metals Trace elements enter the atmosphere via both natural... 5 Chapter 2: Sources and Deposition of Trace Metals...

89

T-720: Blue Coat Director HTTP Trace Processing Flaw Permits...  

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

0: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks...

90

Toward an integration of landscape and food web ecology: The dynamics of spatially subsidized food webs  

E-Print Network [OSTI]

We focus on the implications of movement, landscape variables, and spatial heterogeneity for food web dynamics. Movements of nutrients, detritus, prey, and consumers among habitats are ubiquitous in diverse biomes and can ...

Polis, Gary A.; Anderson, Wendy B.; Holt, Robert D.

1997-01-01T23:59:59.000Z

91

Effect of Microbial Activity on Trace Element Release from Sewage  

E-Print Network [OSTI]

Effect of Microbial Activity on Trace Element Release from Sewage Sludge S H A B N A M Q U R E S H in mobilization of trace elements from land-applied wastewater sludge is not well-defined. Our study examined-effective management alternative. Unfor- tunately, sewage sludge also contains potentially toxic trace elements

Walter, M.Todd

92

Procedure for Cleaning Bottles for Trace Metal Analysis Initial cleaning  

E-Print Network [OSTI]

Procedure for Cleaning Bottles for Trace Metal Analysis Initial cleaning: Supplies LDPE 60ml bottles (nalgene) ACS grade Hydrochloric acid Trace metal grade nitric acid Day 1 1. Submerge 60ml bottles for up to three uses) 2. Rinse 3x in milli-q (DI) water 3. Fill bottles with 2% trace metal grade nitric

Paytan, Adina

93

Removal of trace olefins from aromatic hydrocarbons  

SciTech Connect (OSTI)

A process is described for treating a hydrocarbon process stream by converting trace quantities of olefinic impurities to nonolefinic hydrocarbons. The process comprises contacting the process stream, which contains trace olefins in an amount of from about 50 to about 2000 as measured by Bromine Index and at least 80% by weight of aromatic and naphthenic hydrocarbons having from 6 to 20 carbon atoms per molecule, at reaction conditions which ensure liquid phase operation with a solid catalyst composite comprising a crystalline aluminosilicate zeolite and a refractory inorganic oxide. A catalytic olefin-consuming alkylation reaction then produces an essentially olefinfree product stream with approximately the same quantity and distribution of aromatic and naphthenic hydrocarbons as contained in the process stream.

Sachtler, J.W.A.; Barger, P.T.

1989-01-03T23:59:59.000Z

94

Improve reformer operation with trace sulfur removal  

SciTech Connect (OSTI)

Modern bimetallic reforming catalysts typically have feed specifications for sulfur of 0.5 to 1 wppm in the reformer naphtha carge. Sulfur in the raw naphtha is reduced to this level by naphtha hydrotreating. While most naphtha hydrotreating operations can usually obtain these levels without substantial problems. It is difficult to obtain levels much below 0.5 to 1 wppm with this process. Revamp of a constrained existing hydrotreater to reduce product sulfur slightly can be extremely costly typically entailing replacement or addition of a new reactor. At Engelhard the authors demonstrated that if the last traces of sulfur remaining from hydrotreating can be removed, the resulting ultra-low sulfur feed greatly improves the reformer operation and provides substantial economic benefit to the refiner. Removal of the remaining trace sulfur is accomplished in a simple manner with a special adsorbent bed, without adding complexity to the reforming operation.

McClung, R.G.; Novak, W.J.

1987-01-01T23:59:59.000Z

95

Trace analysis of atmospheric organic bases  

E-Print Network [OSTI]

analysis of atmospheric organic bases were investigated; the study included (1) the analysis of submarine charcoal filter bed samples for nitrogen bases and (2) the use of metallic tetraphenylporphines (TPP) as specific adsorbents for atmospheric... gas chromatography (GC) and GC-mass spectrometry (GC-MS). The isolation procedure provided acceptable reproducibi lity in the determination of trace amounts of nitrogen bases in the submarine environment. Several metallic TPP adsorbents were...

Clark, Dwayne C.

2012-06-07T23:59:59.000Z

96

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 Trace elements and alkaliTrace elements and alkali  

E-Print Network [OSTI]

elements in fossil - and waste-derived fuelsTrace elements in fossil - and waste-derived fuels Coal Peat Heavy fuel oil Pet coke MSW RDF Wood Waste wood Waste paper Scrap tyres Sew. sludge Hg 0.02-3 ~0.07 .153 Behaviour of trace elements in coalBehaviour of trace elements in coal combustion flue gasescombustion flue

Zevenhoven, Ron

97

Original article The effect of feed enzymes on nutrient  

E-Print Network [OSTI]

Original article The effect of feed enzymes on nutrient and energy retention in young racing. No difference in body weight was observed between groups. Despite feed restriction, intake was higher for enzyme-sup- plemented diet. When related to feed intake, excreta were lower by 11% for enzyme-supplemented diet. Enzyme

Paris-Sud XI, Université de

98

Oxygen Consumption Rates of Bacteria under Nutrient-Limited Conditions  

Science Journals Connector (OSTI)

...research-article Environmental Microbiology Oxygen Consumption Rates of Bacteria under Nutrient-Limited...heterotrophic bacteria was measured. The oxygen consumption and population density of batch cultures...tracked for up to 200 days. The oxygen consumption per CFU (QO2) declined by more than...

Timothy E. Riedel; William M. Berelson; Kenneth H. Nealson; Steven E. Finkel

2013-06-14T23:59:59.000Z

99

Fertilizer Facts: December 1999, Number 22 Canola Nutrient Management  

E-Print Network [OSTI]

Fertilizer Facts: December 1999, Number 22 Canola Nutrient Management Grant Jackson Western Triangle Ag. Research Center, Conrad With the development of more reliable pest control methods, canola has become an important oilseed crop that offers small grain producers an excellent rotational crop. Canola

Lawrence, Rick L.

100

Modelling and simulation of nutrient dispersion from coated fertilizer granules  

Science Journals Connector (OSTI)

The usage of Controlled-Release Fertilizer (CRF) is essential in plants and crops to fulfill the need and requirement for the modern agriculture which now feeds 6 billion people. Therefore modeling and simulation of nutrient release from coated fertilizer has become the best method to study the behavior of some parameters toward water saturation in and nutrient release from the coated-fertilizer granule. This paper is the improvement development of modeling and computer simulation by Basu [1] which include some of the factors affecting the water saturation time and nutrient release time from a coated-fertilizer. The effect of granule radius the diffusivity of water and nutrient the temperature of surrounding the contact areas and the characteristic of the coating are studied and the simulation was developed using MATLAB software. The studies and understanding of this project is very important and useful especially to determine the important parameters in the manufacturing process of the coated-fertilizer granule and also will be useful for the farmers/users in the selection of the best fertilizers for their crops.

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Nutrient enrichment, biodiversity loss, and consequent declines in ecosystem productivity  

E-Print Network [OSTI]

the species compo- sitions, biodiversity, and functioning of terrestrial and marine ecosystems worldwide (1, freshwater, and marine ecosystems (8­15). This has raised concerns that contemporary biodiversity declinesNutrient enrichment, biodiversity loss, and consequent declines in ecosystem productivity Forest

Minnesota, University of

102

Microscale Nutrient Patches in Planktonic Habitats Shown by Chemotactic Bacteria  

Science Journals Connector (OSTI)

...Reports of different swimming behavior displayed...this, we studied swimming behavior of bacteria...important to chemotactic efficiency in this example...20 individuals, swimming in the estimated...free amino-acid pool in a cell of 10...of nutrients and energy in aquatic ecosystems...

Nicholas Blackburn; Tom Fenchel; Jim Mitchell

1998-12-18T23:59:59.000Z

103

Do Megafauna influence spatial patterns of nutrient distribution?  

E-Print Network [OSTI]

and soil mineral concentrations at the Langoué Bai, Gabon. Submitted in partial fulfillment of nutrient concentration in soil and litter samples at the Langoué Bai in Gabon. I identified only limited in Gabon throughout my study. Likewise, my thanks goes to Dr Kathryn Jeffrey and Natacha Bengone from

Malhi, Yadvinder

104

Review article Strategies to control water and nutrient supplies  

E-Print Network [OSTI]

, expenses for artificial lighting, heating, dehu- midification or CO2 enrichment of the greenhouse airReview article Strategies to control water and nutrient supplies to greenhouse crops. A review Hans to greenhouse crops. The tradi- tional concepts of surplus irrigation and fertilization conflict

Paris-Sud XI, Université de

105

Original article Nutrient leaching from soil amended with apple waste  

E-Print Network [OSTI]

Original article Nutrient leaching from soil amended with apple waste Anne-Marie de COCKBORNE December 2000) Abstract ­ Among the possibilities for disposing of overproduction of apple, land application is flexible and inexpensive. Six soil columns receiving 0, 200 or 500 Mg of apple wasteha­1 were

Paris-Sud XI, Université de

106

Environmental Concerns High nutrient, bacterial and salinity levels--along  

E-Print Network [OSTI]

of best management practices are critical to implementing these efforts. Through more than 130Environmental Concerns High nutrient, bacterial and salinity levels--along with low dissolved and participation vital to developing and implementing watershed-protection plans. Economic and Environmental

107

Influences on the oceanic biogeochemical cycling of the hybrid-type metals, cobalt, iron, and manganese  

E-Print Network [OSTI]

Trace metal cycling is one of many processes that influence ocean ecosystem dynamics. Cobalt, iron, and manganese are redox active trace metal micro-nutrients with oceanic distributions that are influenced by both biological ...

Noble, Abigail Emery

2012-01-01T23:59:59.000Z

108

Spatiotemporal nutrient loading to Cultus Lake: Context for eutrophication and implications for  

E-Print Network [OSTI]

Spatiotemporal nutrient loading to Cultus Lake: Context for eutrophication and implications of Thesis: Spatiotemporal nutrient loading to Cultus Lake: Context for eutrophication and implications Stelmack from the Cultus Lake Parks Board, Binny Sivia from Fraser Health, Erika Lok from Environment

109

Effects of Anthropogenic Nutrient Enrichment on Exotic and Restored Native Aquatic Vegetation  

E-Print Network [OSTI]

nutrient decline for both tributaries. This study will provide water quality resource managers guidance on the development of total maximum daily loads (TMDLs) for water bodies impaired by high nutrient loading and the implementation of wetland plants...

Parnell, Allison

2012-07-16T23:59:59.000Z

110

Evaluations of nutrient diffusing substrates and the primary importance of light in controlling periphyton  

E-Print Network [OSTI]

eutrophication. In the first study, artificial channels were used to investigate the response of periphyton to different nutrient delivery mechanisms. In two channels, nutrients were delivered via diffusion to periphyton growth surfaces using modified Matlock...

Murawski, Matthew Thomas

2012-06-07T23:59:59.000Z

111

Transport Functions Dominate the SAR11 Metaproteome at Low-Nutrient...  

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

Functions Dominate the SAR11 Metaproteome at Low-Nutrient Extremes in the Sargasso Sea. Transport Functions Dominate the SAR11 Metaproteome at Low-Nutrient Extremes in the Sargasso...

112

Fecal pats help to predict nutrient intake by cattle during summer on California's annual rangelands  

E-Print Network [OSTI]

Article t Fecal pats help to predict nutrient intake byof California rangelands will help to identify nutritional

Jinks, Angela D.; Oltjen, James W; Robinson, Peter H; Calvert, Chris C.

2010-01-01T23:59:59.000Z

113

Treatability study of industrial waste using sanitary sewage to supply nutrients  

E-Print Network [OSTI]

Ferguson, B. S. , U. S. Merchant Marine Academy Co-Chairmen of Advisory Conmittee: Dr. Harold W. Wolf Dr. Tom D. Reynolds Industrial wastewaters in many instances do not contain suffi- cient nutrients such as nitrogen and phosphorus to permit effective... and phosphorus, which adds to the cost. Sanitary sewage contains these nutrients and, if mixed in proper proportions with petrochemical industrial waste- waters requiring added nutrients, could satisfy the nutrient demand and reduce treatment cost. A limited...

Ferguson, James Ritchie

2012-06-07T23:59:59.000Z

114

Nutrient Bioaccumulation in Phragmites australis: Management Tool for Reduction of Pollution  

E-Print Network [OSTI]

Nutrient Bioaccumulation in Phragmites australis: Management Tool for Reduction of Pollution + Business Media B.V. 2009 Abstract We studied nutrient removal by Phragmites australis in the Albujón rambla, and lower risk of strong precipitation. Keywords Phragmites australis . Nutrients . Bioaccumulation . Mar

Murcia, Universidad de

115

A resin-buffered nutrient solution for controlling metal speciation in the algal bottle assay  

Science Journals Connector (OSTI)

Metal speciation in solution is uncontrolled during algal growth in the traditional algal bottle assay. A resin-buffered nutrient solution was developed to overcome this problem and this was applied to test the effect of chloride (Cl?) on cadmium (Cd) uptake. Standard nutrient solution was enriched with 40 mM of either NaNO3 or NaCl, and was prepared to contain equal Cd2+ but varying dissolved Cd due to the presence of CdCln2?n complexes. Both solutions were subsequently used in an algal assay in 100 mL beakers that contained only the solution (designated “?R”) or contained the solution together with a cation exchange sulfonate resin (2 g L?1, designated “+R”) as a deposit on the bottom of the beaker. Pseudokirchneriella subcapitata was grown for 72 h (1.4 × 105–1.4 × 106 cells mL?1) in stagnant solution and shaken three times a day. Growth was unaffected by the presence of the resin (p > 0.05). The Cd concentrations in solution of the ?R devices decreased with 50–58% of initial values due to Cd uptake. No such changes were found in the +R devices or in abiotic controls. Cd uptake was unaffected by either NaNO3 or NaCl treatment in the +R device, confirming that Cd2+ is the preferred Cd species in line with the general concept of metal bioavailability. In contrast, Cd uptake in the ?R devices was two-fold larger in the NaCl treatment than in the NaNO3 treatment (p < 0.001), suggesting that CdCln2?n complexes are bioavailable in this traditional set-up. However this bioavailability is partially, but not completely, an apparent one, because of the considerable depletion of solution 109Cd in this set-up. Resin-buffered solutions are advocated in the algal bottle assay to control trace metal supply and to better identify the role of metal complexes on bioavailability.

L. Verheyen; R. Merckx; E. Smolders

2012-01-01T23:59:59.000Z

116

Evaluating fugacity models for trace components in landfill gas  

Science Journals Connector (OSTI)

A fugacity approach was evaluated to reconcile loadings of vinyl chloride (chloroethene), benzene, 1,3-butadiene and trichloroethylene in waste with concentrations observed in landfill gas monitoring studies. An evaluative environment derived from fictitious but realistic properties such as volume, composition, and temperature, constructed with data from the Brogborough landfill (UK) test cells was used to test a fugacity approach to generating the source term for use in landfill gas risk assessment models (e.g. GasSim). SOILVE, a dynamic Level II model adapted here for landfills, showed greatest utility for benzene and 1,3-butadiene, modelled under anaerobic conditions over a 10 year simulation. Modelled concentrations of these components (95?300 ?g m?3; 43 ?g m?3) fell within measured ranges observed in gas from landfills (24?300–180?000 ?g m?3; 20–70 ?g m?3). This study highlights the need (i) for representative and time-referenced biotransformation data; (ii) to evaluate the partitioning characteristics of organic matter within waste systems and (iii) for a better understanding of the role that gas extraction rate (flux) plays in producing trace component concentrations in landfill gas.

Sophie Shafi; Andrew Sweetman; Rupert L. Hough; Richard Smith; Alan Rosevear; Simon J.T. Pollard

2006-01-01T23:59:59.000Z

117

Trace element content of magnetohydrodynamic coal combustion effluents  

Science Journals Connector (OSTI)

Trace element contents from effluents of a simulated coal-fired magnetohydrodynamic (MHD) combustion process have been determined using thermal neutron activation analysis techniques. The quality control consi...

M. S. Akanni; V. O. Ogugbuaja; W. D. James

1983-01-01T23:59:59.000Z

118

The Effects of Trace Contaminants on Catalytic Processing of...  

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

Processing of Biomass-Derived Feedstocks . Abstract: Trace components in biomass feedstocks are potential catalyst poisons when catalytically processing these materials to...

119

Towards a Ubiquitous Semantics of Interaction: phenomenology, scenarios and traces  

E-Print Network [OSTI]

Towards a Ubiquitous Semantics of Interaction: phenomenology, scenarios and traces Alan Dix does not attempt to address the whole question, but focuses on a phenomenological semantics

Dix, Alan

120

Biomass and nutrient removal by willow clones in experimental bioenergy plantations in New York State  

Science Journals Connector (OSTI)

The development of short-rotation intensive cultural (SRIC) willow systems as a source of bioenergy and bioproducts is growing in the northeastern and midwestern United States. Important data for sustainable management such as nutrient removal and nutrient use efficiency in willow bioenergy plantations is lacking. This study reports wood biomass production, annual removal of nutrients, and nutrient use efficiency in experimental plantings of SRIC willow and poplar at Tully, New York. Effects of clone, fertilization, irrigation, planting density, and harvest cycle were analyzed. Annual biomass production of 15–22 dry Mg/ha removed 75–86, 10–11, 27–32, 52–79 and 4–5 kg/ha/year of N, P, K, Ca and Mg, respectively. For all the variables studied, the responses depended on clone. Fertilization and irrigation increased rates of nutrient removal by means of increased biomass production. Unlike planting density, harvest cycle significantly affected rates of nutrient removal and nutrient use efficiency. For clone SV1 (Salix dasyclados), an irrigated and fertilized planting with a density of 36,960 trees/ha harvested on a 3-year rotation had the highest biomass production and nutrient use efficiency, and the lowest rates of nutrient removal. The annual harvest cycle had the lowest nutrient use efficiency and the highest annual removal of nutrients suggesting that this choice would be most appropriate for biomass crops that are to be used as buffer strips to manage nutrient runoff from agricultural fields. An appropriate choice of clone, planting density, and harvest cycle could tailor the rates of nutrient removal and nutrient use efficiency to match the objective of the planting.

Hector G. Adegbidi; Timothy A. Volk; Edwin H. White; Lawrence P. Abrahamson; Russell D. Briggs; Donald H. Bickelhaupt

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

The biogeochemistry of marine particulate trace metals  

E-Print Network [OSTI]

Marine particles include all living and non-living solid components of seawater, representing an extremely dynamic and chemically diverse mixture of phases. The distributions of these phases are poorly constrained and ...

Ohnemus, Daniel Chester

2014-01-01T23:59:59.000Z

122

Autonomous microexplosives subsurface tracing system final report.  

SciTech Connect (OSTI)

The objective of the autonomous micro-explosive subsurface tracing system is to image the location and geometry of hydraulically induced fractures in subsurface petroleum reservoirs. This system is based on the insertion of a swarm of autonomous micro-explosive packages during the fracturing process, with subsequent triggering of the energetic material to create an array of micro-seismic sources that can be detected and analyzed using existing seismic receiver arrays and analysis software. The project included investigations of energetic mixtures, triggering systems, package size and shape, and seismic output. Given the current absence of any technology capable of such high resolution mapping of subsurface structures, this technology has the potential for major impact on petroleum industry, which spends approximately $1 billion dollar per year on hydraulic fracturing operations in the United States alone.

Engler, Bruce Phillip; Nogan, John; Melof, Brian Matthew; Uhl, James Eugene; Dulleck, George R., Jr.; Ingram, Brian V.; Grubelich, Mark Charles; Rivas, Raul R.; Cooper, Paul W.; Warpinski, Norman Raymond; Kravitz, Stanley H.

2004-04-01T23:59:59.000Z

123

Tracing The Largest Seasonal Migration on Earth  

E-Print Network [OSTI]

It is estimated that over 3.6 billion passengers are travelling during the Chinese Spring Festival travel season. They leave their working cities and return their hometowns to enjoy annual family time, and back to cities after the holiday. In this study, with the massive location-based data collected from millions of smartphone users, we propose a novel method to trace the migration flow and explore the migration patterns of Chinese people. From the temporal perspective, we explore the migration trend over time during a 34-days period, about half a month before and after the Spring Festival. From the spatial perspective, the migration directions and routes are estimated and quantified, and the migration flow is visualized. The spatial range of influence of developed regions could be reflected with the destinations of migration, the migration destinations and originations have obvious characteristic of geographical proximity.

Wang, Xianwen; Mao, Wenli; Hu, Zhigang; Gu, Li

2014-01-01T23:59:59.000Z

124

Insect Trace Fossil Associations in Paleosols: The Coprinisphaera Ichnofacies  

Science Journals Connector (OSTI)

...Namibia Sossus Sand (Khommabes Car-bonates) Late Pleistocene...from the Pleistocene Khommabes Car-bonates of Namibia are not...1993, Trace fossils from a Car-boniferous turbiditic lake...1985, Trace fossils from the Panther Member, Star Point Formation...

JORGE F. GENISE; M. GABRIELA MáNGANO; LUIS A. BUATOIS; JOSÉ H. LAZA; MARIANO VERDE

125

Evaluating regional emission estimates using the TRACE-P observations  

E-Print Network [OSTI]

Evaluating regional emission estimates using the TRACE-P observations G. R. Carmichael,1 Y. Tang,1. Wang,6 D. R. Blake,7 E. Atlas,8 A. Fried,8 B. Potter,9 M. A. Avery,10 G. W. Sachse,10 S. T. Sandholm,11 the NASA Transport and Chemical Evolution over the Pacific (TRACE-P) experiment are used in conjunction

Clarke, Antony

126

Reasoning by Assumption: Formalisation and Analysis of Human Reasoning Traces  

E-Print Network [OSTI]

for the traces acquired in experiments undertaken. 1 Introduction Practical reasoning processes are often not limited to single reasoning steps, but extend to traces or trajectories of a number of interrelated by assumption'. This (non-deductive) practical reasoning pattern in- volves a number of interrelated reasoning

Treur, Jan

127

Looking For Traces of Pharmaceuticals in Drinking Water  

E-Print Network [OSTI]

Looking For Traces of Pharmaceuticals in Drinking Water By Daniel D. Snow, Ph.D. Director traces of drugs in the public drinking water supplies of 24 major U.S. metropolitan areas. This has in drinking water supplies is not new, but the classes of contaminants being tested for are. Pharmaceuticals

Nebraska-Lincoln, University of

128

Impact of plant assemblages on nutrient removal in constructed wetlands  

Science Journals Connector (OSTI)

Four different mesocosm scale constructed wetlands - monoculture (Carexstipata), self-designed (passive) community, mixed planted monoculture-passive community and a non-vegetated control - were compared to assess the effects of plant community composition on the removal of inorganic nutrients from agricultural runoff (synthetic tile water). The mixed and self-designed systems consistently produced effluent NO3-N concentrations significantly below 10 mg/L, and had higher rates of evapotranspiration. Results indicate the type and composition of the plant community can impact the performance of constructed wetlands. Therefore, self-design of the plant community through the existing seed bank may increase the effectiveness of wetlands in treating agricultural runoff.

III">Ralph E. Spayd III; Shirley E. Clark; Katherine H. Baker

2013-01-01T23:59:59.000Z

129

Larval Behavior and Natural Trace Element Signatures as Indicators of Crustacean Population Connectivity  

E-Print Network [OSTI]

variability in an atlas of trace element signatures forin creating a trace element atlas, our results show thatstage to create a trace element atlas in 2009 (Table 4.2),

Miller, Seth Haylen

2011-01-01T23:59:59.000Z

130

microbial community. Coevolution altered eco-logical population dynamics and resulted in  

E-Print Network [OSTI]

microbial community. Coevolution altered eco- logical population dynamics and resulted in bacteria-nutrient broth, coevolutionary dynam- ics in soil appear to be driven by fluctuating selection--a form (2007). 6. S. Gandon, A. Buckling, E. Decaestecker, T. Day, J. Evol. Biol. 21, 1861 (2008). 7. C. M

Farrell, Anthony P.

131

Sediment resuspension dampens the effect of nutrient inputs on the phytoplankton community: a mesocosm experiment study  

Science Journals Connector (OSTI)

While considerable research has addressed the influence of sediment resuspension on shallow lake ecosystems, little attention has ... using field mesocosms to investigate the impacts of resuspension, nutrient loa...

Yuhui Kang; Xiaolan Song; Zhengwen Liu

2013-06-01T23:59:59.000Z

132

Effects of Multi-nutrient Additions on GHG Fluxes in a Temperate Grassland of Northern China  

Science Journals Connector (OSTI)

Human activities have substantially enhanced the availability of important nutrient elements such as nitrogen (N), phosphorus (P), and potassium (K) in ecosystems worldwide. However, how the concurrent increas...

Lihua Zhang; Yawen Huo; Dufa Guo; Qibing Wang; Yin Bao; Linghao Li

2014-06-01T23:59:59.000Z

133

Functional trait expression of grassland species shift with short- and long-term nutrient additions  

Science Journals Connector (OSTI)

Humans are altering nutrient availability worldwide, likely affecting plant trait expression, with consequences for community composition and ecosystem function. Here, we examined the responses of plant specie...

Kimberly J. La Pierre; Melinda D. Smith

2014-12-01T23:59:59.000Z

134

E-Print Network 3.0 - atmospheric deposition nutrient Sample...  

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

Summary: - Cations (Ca+, Mg+, K+ , ...) - Micro nutrients (Fe, Cu, Mn, Zn, ...) Water Organisms need: Atmosphere... photosynthesis) Atmosphere (SO4 2- wet deposition)...

135

Rapid nutrient determination of sugarcane milling by-products using near infrared spectroscopy.  

E-Print Network [OSTI]

??This thesis investigates the use of near infrared (NIR) spectroscopic methods for rapid measurement of nutrient elements in mill mud and mill ash. Adoption of… (more)

Keeffe, Eloise Caitlin

2013-01-01T23:59:59.000Z

136

Trace elements in oil shale. Progress report, 1979-1980  

SciTech Connect (OSTI)

The purpose of this research program is to understand the potential impact of an oil shale industry on environmental levels of trace contaminants in the region. The program involves a comprehensive study of the sources, release mechanisms, transport, fate, and effects of toxic trace chemicals, principally the trace elements, in an oil shale industry. The overall objective of the program is to evaluate the environmental and health consequences of the release of toxic trace elements by shale and oil production and use. The baseline geochemical survey shows that stable trace elements maps can be constructed for numerous elements and that the trends observed are related to geologic and climatic factors. Shale retorted by above-ground processes tends to be very homogeneous (both in space and in time) in trace element content. Leachate studies show that significant amounts of B, F, and Mo are released from retorted shales and while B and Mo are rapidly flushed out, F is not. On the other hand, As, Se, and most other trace elements are not present in significant quantities. Significant amounts of F and B are also found in leachates of raw shales. Very large concentrations of reduced sulfur species are found in leachates of processed shale. Very high levels of B and Mo are taken up in some plants growing on processed shale with and without soil cover. There is a tendency for some trace elements to associate with specific organic fractions, indicating that organic chelation or complexation may play an important role. Many of the so-called standard methods for analyzing trace elements in oil shale-related materials are inadequate. A sampling manual is being written for the environmental scientist and practicing engineer. A new combination of methods is developed for separating the minerals in oil shale into different density fractions. Microbial investigations have tentatively identified the existence of thiobacilli in oil shale materials such as leachates. (DC)

Chappell, W R

1980-01-01T23:59:59.000Z

137

E-Print Network 3.0 - atmospheric trace gas Sample Search Results  

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

Chemistry and Physics Discussions Trace gas measurements from... ., Rinsland, C. P., Stiller, G. P., and Zander, R.: On the assessment and uncertainty of atmospheric trace gas......

138

Cultural Models, Grain-Farm Management, and Agricultural Nutrient Runoff: A Maryland Case Study of the Role of Culture in Nutrient-Management Policy  

E-Print Network [OSTI]

Government agencies responsible for monitoring the health of U.S. waterways report that nonpoint-source pollution from agricultural nutrient runoff is one of America's greatest water-quality threats. Federal agencies and ...

Maloney, Richard Shawn

2009-05-12T23:59:59.000Z

139

Dynamic Expression of Imprinted Genes Associates with Maternally Controlled Nutrient Allocation during Maize Endosperm Development  

Science Journals Connector (OSTI)

...Then, the cDNA fragments went through an end repair process, the addition of a single...generated on average 63 million paired-end RNA-Seq reads for each sample. The RNA-Seq...Berger, F. (2012). Endosperm: Food for humankind and fodder for scientific discoveries...

Mingming Xin; Ruolin Yang; Guosheng Li; Hao Chen; John Laurie; Chuang Ma; Dongfang Wang; Yingyin Yao; Brian A. Larkins; Qixin Sun; Ramin Yadegari; Xiangfeng Wang; Zhongfu Ni

2013-09-20T23:59:59.000Z

140

Dynamic Expression of Imprinted Genes Associates with Maternally Controlled Nutrient Allocation during Maize Endosperm Development  

Science Journals Connector (OSTI)

...produced from the paternal-excess crosses were almost 3 times...than those from the maternal-excess crosses (Scott et al., 1998...effects of parental genome excess on the timing of gene expression...Tris-HCl, pH 8.0, 150 mM lithium chloride (LiCl), 5 mM EDTA...

Mingming Xin; Ruolin Yang; Guosheng Li; Hao Chen; John Laurie; Chuang Ma; Dongfang Wang; Yingyin Yao; Brian A. Larkins; Qixin Sun; Ramin Yadegari; Xiangfeng Wang; Zhongfu Ni

2013-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Herbivore physiological response to predation risk and implications for ecosystem nutrient dynamics  

Science Journals Connector (OSTI)

...N-rich waste compounds...egesta, and plant resources...this model system in northeastern...content, and waste material...allocated to a control (no predator...or risk treatment (presence of...dominant plant S. rugosa...replicates within treatments and average values...A cross-system synthesis...resource control on producer biomass...Toward an integrated framework...

Dror Hawlena; Oswald J. Schmitz

2010-01-01T23:59:59.000Z

142

Tropical Pacific nutrient dynamics in the modern and pleistocene ocean : insights from the nitrogen isotope system  

E-Print Network [OSTI]

eastern equatorial Pacific Ocean during the past 3 M.Y. ,in the western tropical Pacific Ocean in the Holocene epoch,eastern tropical North Pacific Ocean, Mar. Chem. , 3, 271–

Rafter, Patrick Anthony

2009-01-01T23:59:59.000Z

143

Wastewater Discharge, Nutrient Loading, and Dissolved Oxygen Dynamics in a Shallow Texas Bay  

E-Print Network [OSTI]

In Oso Bay, a wastewater treatment plant acts as a source of eutrophication and may have measureable impact on the health of the bay. The objectives of this study were to create a model for modeling dissolved oxygen concentrations over time...

Schroer, Lee Allen

2014-05-07T23:59:59.000Z

144

Carbon Dynamics in Aquatic Ecosystems in Response to Elevated Atmospheric CO2 and Altered Nutrients Availability  

E-Print Network [OSTI]

. Our results show that elevated CO2 led to enhanced photosynthetic carbon uptake and dissolved organic carbon (DOC) production. DOC occupied larger percentage in total organic carbon production in high CO2 environment. N addition stimulated biomass...

Song, Chao

2011-04-26T23:59:59.000Z

145

Halocarbon and Other Atmospheric Trace Species (HATS) | Data.gov  

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

Halocarbon and Other Atmospheric Trace Species (HATS) Halocarbon and Other Atmospheric Trace Species (HATS) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Halocarbon and Other Atmospheric Trace Species (HATS) Dataset Summary Description The general mission of the Halocarbons and other Atmospheric Trace Species group is to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide (N2O) and halogen containing compounds. HATS utilizes numerous types of platforms, including ground-based stations, towers, ocean vessels, aircraft, and balloons, to accomplish its mission. For a detailed mission statement, consult our FAQ. Tags {"nitrous oxide","sulfur hexaflouride",CFC-11,CFC-12,CFC-113,CCl4,CH3CCl3,CH3Cl,halon-1211,HCFC-22,HCFC-142b,halocarbons,chromatograph,aircraft,balloons,vessels,ships,towers,"natural resources",environment,air,"GHG "}

146

Laboratory measurements and modeling of trace atmospheric species  

E-Print Network [OSTI]

Trace species play a major role in many physical and chemical processes in the atmosphere. Improving our understanding of the impact of each species requires a combination of laboratory exper- imentation, field measurements, ...

Sheehy, Philip M. (Philip Michael)

2005-01-01T23:59:59.000Z

147

Time Series of Trace Element Concentrations Calculated from  

E-Print Network [OSTI]

a). A total of 120 samples were collected at sites within the Bay, outside the Golden Gate receives many waste water discharges, especially in areas south of the Dumbarton Bridge, that contain trace

148

A graphics architecture for ray tracing and photon mapping  

E-Print Network [OSTI]

Recently, methods were developed to render various global illumination e?ects with rasterization GPUs. Among those were hardware based ray tracing and photon mapping. However, due to current GPU??s inherent architectural limitations, the e...

Ling, Junyi

2005-11-01T23:59:59.000Z

149

A study on some trace elements in Chilean seafood  

Science Journals Connector (OSTI)

Levels of essential and toxic trace elements in six marine species greatly in demand in the international market (canned pink clams, razor clams, clams, king crab, sardines, and frozen albacore tuna fish) were...

N. Gras; L. Munoz; M. Thieck…

1993-03-01T23:59:59.000Z

150

Complex ray tracing study of electron cyclotron resonance heating  

Science Journals Connector (OSTI)

In the up-to-date ray tracing study of electron cyclotron resonance heating (ECRH) of fusion plasmas, energy absorption ... side of the tokamak plasmas approach the electron cyclotron resonance surface step by st...

Liu Hongxiu; Zhao Changlin

1986-03-01T23:59:59.000Z

151

Understanding reservoir mechanisms using phase and component streamline tracing  

E-Print Network [OSTI]

explored. The power and utility of the phase and component streamlines have been demonstrated using synthetic examples and two field cases. The new formulation of streamline tracing provides additional information about the reservoir drive mechanisms...

Kumar, Sarwesh

2009-05-15T23:59:59.000Z

152

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID...  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

153

The Fidelity and Trace Norm Distances for Quantifying Coherence  

E-Print Network [OSTI]

We investigate the coherence measures induced by fidelity and trace norm, based on the recent proposed coherence quantification in [Phys. Rev. Lett. 113, 140401, 2014]. We show that the fidelity of coherence does not in general satisfy the monotonicity requirement as a measure of coherence under the subselection of measurements condition. We find that the trace norm of coherence can act as a measure of coherence for qubit case and some special class of qutrits.

Lian-He Shao; Zhengjun Xi; Heng Fan; Yongming Li

2014-10-30T23:59:59.000Z

154

Technique for identifying, tracing, or tracking objects in image data  

DOE Patents [OSTI]

A technique for computer vision uses a polygon contour to trace an object. The technique includes rendering a polygon contour superimposed over a first frame of image data. The polygon contour is iteratively refined to more accurately trace the object within the first frame after each iteration. The refinement includes computing image energies along lengths of contour lines of the polygon contour and adjusting positions of the contour lines based at least in part on the image energies.

Anderson, Robert J. (Albuquerque, NM); Rothganger, Fredrick (Albuquerque, NM)

2012-08-28T23:59:59.000Z

155

Cheaters, diffusion and nutrients constrain decomposition by microbial enzymes in spatially  

E-Print Network [OSTI]

LETTER Cheaters, diffusion and nutrients constrain decomposition by microbial enzymes in spatially of California, Irvine, CA 92697, USA Correspondence: E-mail: allisons@uci.edu Abstract Extracellular enzymes-limiting step in nutrient mineralization. Because the factors regulating enzyme production are poorly understood

German, Donovan P.

156

Pennsylvania Act 38/Nutrient Management Program/Technical Manual January 2014  

E-Print Network [OSTI]

.0 released in January 2014 supports: Version 4.x of the Nutrient Management Plan Standard Format Version 3.x in the development, review, and implementation of Act 38 nutrient management plans. This manual describes how the various calculations and decisions are made during plan development, review, and implementation

Guiltinan, Mark

157

Pennsylvania Act 38/Nutrient Management Program/Technical Manual January 2013  

E-Print Network [OSTI]

.0 released in January 2013 supports: Version 4.x of the Nutrient Management Plan Standard Format Version 3.x in the development, review, and implementation of Act 38 nutrient management plans. This manual describes how the various calculations and decisions are made during plan development, review, and implementation

Guiltinan, Mark

158

Characterising nutrient-induced fluorescence transients (NIFTs) in nitrogen-stressed Chlorella emersonii (Chlorophyta)  

E-Print Network [OSTI]

Characterising nutrient-induced fluorescence transients (NIFTs) in nitrogen-stressed Chlorella nutrient- induced fluorescence transients (NIFTs) in nitrogen-stressed Chlorella emersonii (Chlorophyta-starvation in batch cultures of the freshwater chlorophyte Chlorella emersonii was followed and the NIFT responses

McCarthy, T.K.

159

Strontium isotopes and nutrient sourcing in a semi-arid woodland Amanda C. Reynolds a  

E-Print Network [OSTI]

Strontium isotopes and nutrient sourcing in a semi-arid woodland Amanda C. Reynolds a , Jay Quade b in revised form 7 June 2012 Accepted 21 June 2012 Available online xxxx Keywords: Strontium isotopes Nutrient Malpais National Monument (EMNM), New Mexico provide an ideal set- ting to examine strontium, and hence

160

Aggregation methods in food chains with nutrient recycling B.W. Kooi a,  

E-Print Network [OSTI]

Aggregation methods in food chains with nutrient recycling B.W. Kooi a, *, J.C. Poggiale b , P recycling is taken into account. The food chain is formed by a nutrient and two populations, prey. The excreted material together with death material, detritus, is decomposed and this gives the recycling

Poggiale, Jean-Christophe

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

GLOBAL STABILITY IN CHEMOSTAT-TYPE COMPETITION MODELS WITH NUTRIENT RECYCLING  

E-Print Network [OSTI]

GLOBAL STABILITY IN CHEMOSTAT-TYPE COMPETITION MODELS WITH NUTRIENT RECYCLING SHIGUI RUAN AND XUE- type competition models with nutrient recycling. In the first model the recycling is instantaneous, whereas in the second, the recycling is delayed. They carried out the equilibrium analysis and obtained

Ruan, Shigui

162

Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species identity and  

E-Print Network [OSTI]

REPORT Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species in recycling nutrients, thus providing a mechanism for how animal species identity mediates ecosystem processes) recycled nitrogen (N) and phosphorus (P) in a tropical stream supports stoichiometry theory. Mass

Flecker, Alex

163

Removal of Plant Nutrients by Means of Aerobic Stabilization of Sludge  

Science Journals Connector (OSTI)

...Nutrients by Means of Aerobic Stabilization of Sludge Roar L. Irgens 1 H. Orin Halvorson Department...investigation, we found that, if the sludges were treated by an aerobic process, a...Nutrients by Means of Aerobic Stabilization of Sludge ROAR L. IRGENS' AND H. ORIN HALVORSON...

Roar L. Irgens; H. Orin Halvorson

1965-05-01T23:59:59.000Z

164

Nutrient release from combustion residues of two contrasting herbaceous vegetation types  

E-Print Network [OSTI]

(muffle and flame burning) to combust herbaceous biomass from contrasting nutrient level sites to estimate caused by a fire is the combustion and charring of vegetation. Both C and N contained in plant biomassNutrient release from combustion residues of two contrasting herbaceous vegetation types Benjamin A

Florida, University of

165

Nutrient Bioaccumulation in Phragmites australis: Management Tool for Reduction of Pollution  

E-Print Network [OSTI]

Nutrient Bioaccumulation in Phragmites australis: Management Tool for Reduction of Pollution by Phragmites australis in the Albujón rambla, the main drainage system that discharges into the Mar Menor Phragmites australis . Nutrients . Bioaccumulation . Mar Menor. Water pollution 1 Introduction Reed

Murcia, Universidad de

166

Solar Coronal Structures and Stray Light in TRACE  

E-Print Network [OSTI]

Using the 2004 Venus transit of the Sun to constrain a semi-empirical point-spread function for the TRACE EUV solar telescope, we have measured the effect of stray light in that telescope. We find that 43% of 171A EUV light that enters TRACE is scattered, either through diffraction off the entrance filter grid or through other nonspecular effects. We carry this result forward, via known-PSF deconvolution of TRACE images, to identify its effect on analysis of TRACE data. Known-PSF deconvolution by this derived PSF greatly reduces the effect of visible haze in the TRACE 171A images, enhances bright features, and reveals that the smooth background component of the corona is considerably less bright (and hence much more rarefied) than commonly supposed. Deconvolution reveals that some prior conlclusions about the Sun appear to have been based on stray light in the images. In particular, the diffuse background "quiet corona" becomes consistent with hydrostatic support of the coronal plasma; feature contrast is greatly increased, possibly affecting derived parameters such as the form of the coronal heating function; and essentially all existing differential emission measure studies of small features appear to be affected by contamination from nearby features. We speculate on further implications of stray light for interpretation of EUV images from TRACE and similar instruments, and advocate deconvolution as a standard tool for image analysis with future instruments such as SDO/AIA.

C. E. DeForest; P. C. H. Martens; M. J. Wills-Davey

2008-08-29T23:59:59.000Z

167

MeTAGeM-Trace: Improving trace generation in model transformation by leveraging the role of transformation models  

Science Journals Connector (OSTI)

Abstract In the context of Model-Driven Engineering (MDE), generation of traces can be automated using the implicit traceability relationships contained in any model transformation. Besides, if transformations are developed adopting a Model-Driven Engineering (MDE) approach, i.e. promoting the role of models and the level of automation, model transformation will benefit from the promised advantages of MDE in terms of less costly software development while reducing the inherent complexity of coding model transformations. To put these ideas into practice, this work introduces MeTAGeM-Trace, the first prototype of an EMF-based toolkit for the MDD of model-to-model transformations which supports trace generation, i.e. it allows developing model transformations that produce not only the corresponding target models, but also a trace model between the elements of the source and target models involved in the transformation.

Álvaro Jiménez; Juan M. Vara; Verónica A. Bollati; Esperanza Marcos

2015-01-01T23:59:59.000Z

168

Contribution of cod liver oil related nutrients –vitamins A, D, E and eicosapentaenoic acid and docosahexaenoic acid- to daily nutrient intake and their associations with plasma concentrations in the EPIC-Norfolk cohort  

E-Print Network [OSTI]

Background: Total Nutrient Intake (TNI) is intake from food and supplements. This provides assessment of nutrient adequacy, prevalence of excessive intake as well as response on biomarkers. Cod liver oil (CLO) is the most frequently consumed...

Lentjes, Marleen A. H.; Mulligan, Angela A.; Welch, Ailsa A.; Bhaniani, Amit; Luben, Robert N.; Khaw, Kay-Tee

2014-09-16T23:59:59.000Z

169

Proposed additions to the SHADOW ray-tracing code for general-asymmetric perfect-crystal optics  

SciTech Connect (OSTI)

The dynamical theory of the diffraction of X-rays from perfect crystals is traditionally expressed in terms of Maxwell`s equations using a semi-classical theory originally due to Ewald and von Laue. Combining the work of Batterman and Cole, Caticha and Caticha-Ellis, and Zachariasen, a formalism is obtained that treats the general asymmetric, thick and thin crystal, Laue and Bragg cases within the second order dispersion surface approximation. The authors have implemented this formalism with thick Bragg crystal E-field boundary value conditions in several routines they have added to one of the Advanced Photon Source (APS) versions of the SHADOW ray-tracing code in order to provide the ability to ray trace inclined double-crystal monochromators and high-resolution backscattering analyzers. These additions have been submitted to the University of Wisconsin Center for X-Ray Lithography for consideration for inclusion in the next version of SHADOW.

Blasdell, R.C.; Macrander, A.T.

1993-12-01T23:59:59.000Z

170

Spin tracking simulations in AGS based on ray-tracing methods - bare lattice, no snakes -  

SciTech Connect (OSTI)

This Note reports on the first simulations of and spin dynamics in the AGS using the ray-tracing code Zgoubi. It includes lattice analysis, comparisons with MAD, DA tracking, numerical calculation of depolarizing resonance strengths and comparisons with analytical models, etc. It also includes details on the setting-up of Zgoubi input data files and on the various numerical methods of concern in and available from Zgoubi. Simulations of crossing and neighboring of spin resonances in AGS ring, bare lattice, without snake, have been performed, in order to assess the capabilities of Zgoubi in that matter, and are reported here. This yields a rather long document. The two main reasons for that are, on the one hand the desire of an extended investigation of the energy span, and on the other hand a thorough comparison of Zgoubi results with analytical models as the 'thin lens' approximation, the weak resonance approximation, and the static case. Section 2 details the working hypothesis : AGS lattice data, formulae used for deriving various resonance related quantities from the ray-tracing based 'numerical experiments', etc. Section 3 gives inventories of the intrinsic and imperfection resonances together with, in a number of cases, the strengths derived from the ray-tracing. Section 4 gives the details of the numerical simulations of resonance crossing, including behavior of various quantities (closed orbit, synchrotron motion, etc.) aimed at controlling that the conditions of particle and spin motions are correct. In a similar manner Section 5 gives the details of the numerical simulations of spin motion in the static case: fixed energy in the neighboring of the resonance. In Section 6, weak resonances are explored, Zgoubi results are compared with the Fresnel integrals model. Section 7 shows the computation of the {rvec n} vector in the AGS lattice and tuning considered. Many details on the numerical conditions as data files etc. are given in the Appendix Section, pages A and sqs.

Meot F.; Ahrens& #44; L.; Glenn& #44; J.; Huang& #44; H.; Luccio& #44; A.; MacKay& #44; W.W.; Roser& #44; T.; Tsoupas& #44; N.

2009-09-01T23:59:59.000Z

171

Trace element fingerprinting of ancient Chinese gold with femtosecond laser  

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

Trace element fingerprinting of ancient Chinese gold with femtosecond laser Trace element fingerprinting of ancient Chinese gold with femtosecond laser ablation-inductivity coupled mass spectrometry Title Trace element fingerprinting of ancient Chinese gold with femtosecond laser ablation-inductivity coupled mass spectrometry Publication Type Journal Article Year of Publication 2009 Authors Brostoff, Lynn B., Jhanis J. Gonzalez, Paul Jett, and Richard E. Russo Journal Journal of Archeological Science Volume 36 Start Page 461 Issue 2 Pagination 461-466 Date Published 02/2009 Keywords Ancient gold, femtosecond, la-icp-ms, Trace element Abstract In this collaborative investigation, femtosecond laser ablation-inductively coupled mass spectrometry (LA-ICP-MS) was applied to the study of a remarkable group of ancient Chinese gold objects in the Smithsonian's Freer Gallery of Art and Arthur M. Sackler Gallery. Taking advantage of the superior ablation characteristics and high precision of a femtosecond 266 nm Ti:sapphire laser at Lawrence Berkeley National Laboratory, major, minor and trace element concentrations in the gold fragments were quantified. Results validate use of femtosecond LA-ICP-MS for revealing ''fingerprints'' in minute gold samples. These fingerprints allow us to establish patterns based on the association of silver, palladium and platinum that support historical, technical and stylistic relationships, and shed new light on these ancient objects.

172

Building Energy Software Tools Directory: TRACE Load 700  

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

Load 700 Load 700 TRACE Load 700 logo. Use TRACE Load 700 software - the building and load design modules of TRACE 700, Trane Air Conditioning Economics - to evaluate the effect of building orientation, size, shape, and mass based on hourly weather data and the resulting heat-transfer characteristics of air and moisture. To assure calculation integrity, the program uses algorithms recommended by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). Choose from eight different ASHRAE cooling and heating methodologies, including the Exact Transfer Function. The program encourages "what if" analyses, allowing the user to enter construction details in any order and then easily change the resulting building model as the design progresses. Multiple project views and "drag-and-drop"

173

CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace  

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

GASLAB Network GASLAB Network CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace Gases (April 2003) data Data Investigators L.P. Steele, P.R. Krummel, and R.L. Langenfelds Commonwealth Scientific and Industrial Research Organisation (CSIRO) DOI 10.3334/CDIAC/atg.db1021 Data are available for four atmospheric trace gases at nine stationary sites and one moving platform (aircraft over Cape Grim, Tasmania, and Bass Strait, between the Australian continent and Tasmania). The trace gases are carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), and hydrogen (H2). Measurements of δ13C from CO2 are also included in this database. The nine stationary sites are, from north to south: Alert, Canada; Shetland Islands, Scotland; Estevan Point, Canada; Mauna Loa, Hawaii; Cape Ferguson,

174

Natchez Trace Elec Power Assn | Open Energy Information  

Open Energy Info (EERE)

Natchez Trace Elec Power Assn Natchez Trace Elec Power Assn Jump to: navigation, search Name Natchez Trace Elec Power Assn Place Mississippi Utility Id 13227 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service (1001 kW-5000kW) Industrial General Service (50 kW and Under) Commercial General Service (51 kW-1000 kW) Commercial Outdoor Lighting HPS 100 W Lighting Outdoor Lighting HPS 100 W Dedicated Pole Lighting Outdoor Lighting HPS 100 W Dedicated Pole & Transformer Lighting Outdoor Lighting HPS 100 W Dedicated Transformer Lighting

175

Heat Trace and Functional Determinant in One Dimension  

E-Print Network [OSTI]

We study the spectral properties of the Laplace type operator on the circle. We discuss various approximations for the heat trace, the zeta function and the zeta-regularized determinant. We obtain a differential equation for the heat kernel diagonal and a recursive system for the diagonal heat kernel coefficients, which enables us to find closed approximate formulas for the heat trace and the functional determinant which become exact in the limit of infinite radius. The relation to the generalized KdV hierarchy is discussed as well.

Ivan G Avramidi

2014-06-05T23:59:59.000Z

176

Nutrient enrichment and zooplankton effects on the phytoplankton community in microcosms from El Andino reservoir (Venezuela)  

Science Journals Connector (OSTI)

To quantify the effects of nutrient enrichment (N and P) and zooplankton grazing on the phytoplankton community structure of El Andino reservoir (Venezuela), in situ microcosms were installed for 6–7 days. Microc...

Ernesto J. González

2000-09-01T23:59:59.000Z

177

Aerosol-nutrient-induced picoplankton growth in Lake Tahoe Katherine R. M. Mackey,1,2  

E-Print Network [OSTI]

Aerosol-nutrient-induced picoplankton growth in Lake Tahoe Katherine R. M. Mackey,1,2 Deborah been observed in Lake Tahoe in the last several decades and, in particular, following the Wheeler

Paytan, Adina

178

Limitations of a laboratory robot for extracting available nutrients from soil  

Science Journals Connector (OSTI)

The use of a laboratory robot has been investigated for the extraction of soil samples prior to their analysis for available nutrients. Of critical importance is the effciency with which the soil is mixed wit...

N. Brenes; A.M. Bunnell; P.A. Langan…

1996-01-01T23:59:59.000Z

179

Nutrient Niches: an Investigation of Nutritional Ecology in a Generalist Herbivore Community  

E-Print Network [OSTI]

in generalist insect herbivores could represent different nutrient niches. As a model system I used a community of grasshoppers in Central Texas. First, I surveyed variation in plant macronutrient content and compared this data to the grasshopper community...

Lenhart, Paul Alvarado

2014-05-07T23:59:59.000Z

180

Regulation of mTOR complex 1 in response to growth factors and nutrients  

E-Print Network [OSTI]

In multicellular organisms, cells ensure the simultaneous availability of growth factors and nutrients before they invest in cellular processes that lead to growth. The TOR kinase is a master regulator of cellular growth ...

Sancak, Yasemin S. (Yasemin Shechner)

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

E-Print Network 3.0 - antioxidant nutrient intakes Sample Search...  

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

a person's energy & nutrient needs. How big is a serving? You don't need... of lemon, lime, or orange vTips for Increasing Water Intake: Yogurt smoothies String Cheese ......

182

E-Print Network 3.0 - azotobacter improves nutrient Sample Search...  

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

Waters in OregonWashington Coastal Waters Using a 5-channel In Situ Nutrient Analyzer M. Gilbert... and Science University, Beaverton , OR, United States. We deployed a 5-channel...

183

The Beef Nutrient Database Improvement Study: Retail Cuts from the Loin and Round  

E-Print Network [OSTI]

The objective of this study was to update the existing nutritional data available in the USDA National Nutrient Database for Standard Reference by providing revised nutritional information on the round and loin cuts evaluated in Phase III...

Grimes, Haley

2012-07-16T23:59:59.000Z

184

Nutrient element accumulation and distribution in an intensively cultured American sycamore plantation  

Science Journals Connector (OSTI)

American sycamore (Platanus occidentalis L.) plantations were intensively cultured on floodplain and terrace sites near the Ohio River in western Kentucky. Biomass and nutrient uptake under various spacing and fe...

Bruce W. Wood; Robert F. Wittwer; Stanley B. Carpenter

1977-11-01T23:59:59.000Z

185

Stimulation of Methane Generation from Nonproductive Coal by Addition of Nutrients or a Microbial Consortium  

Science Journals Connector (OSTI)

...S. Geological Survey (USGS) test well...organic carbon and energy). In the nutrient-free...statically, in the dark, at 22C), and...S. Geological Survey Energy Program and the U.S. Geological Survey National Research...

Elizabeth J. P. Jones; Mary A. Voytek; Margo D. Corum; William H. Orem

2010-09-03T23:59:59.000Z

186

Increasing the absorption of foliar applied nutrients with the use of adjuvants  

E-Print Network [OSTI]

solution showed no increase when combined with adjuvants. Sixty-six percent of the adjuvant-nutrient combinations that enhanced the uptake of N and P, contained propylene glycol. Studies have also been made to determine how and where the nutrients... and stomatal penetration Glycerol L-77 1, 2, 3-propanetriol organosilicone humectant increase contact area and stomatal penetration Lecithin phosphatidyl choline Plyac formulated Propylene Glycol 1, 2-propanediol Pegosperse MS600 polyglycol ester...

Putman, Joan Ellen

2012-06-07T23:59:59.000Z

187

Composition and nutrient digestibility of weather-damaged sorghum in swine  

E-Print Network [OSTI]

COMPOSITION AND NUTRIENT DIGESTIBILITY OF WEATHER-DAMAGED SORGHUM IN SWINE A Thesis by Wendell Craig Bailey Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1980 Major subject: Animal Science COMPOSITION AND NUTRIENT DIGESTIBILITY OF WEATHER-DAMAGED SORGHUM IN SWINE A Thesis by Wendell Craig Bailey Approved as to style and content by: (Chairman) u~~4 ~ (Member) (Member) (Member...

Bailey, Wendell Craig

2012-06-07T23:59:59.000Z

188

"Cumulated Vehicle Acceleration": An Attribute of GPS Probe Vehicle Traces for On-Line Assessment of Vehicle Fuel Consumption in Traffic and Transportation Networks  

E-Print Network [OSTI]

To perform a reliable on-line assessment of fuel consumption in vehicles, we introduce "cumulated vehicle acceleration" as an attribute of GPS probe vehicle traces. The objective of the calculation of the attribute "cumulated vehicle acceleration" in the GPS probe vehicle data is to perform a reliable on-line dynamic traffic assignment for the reduction of vehicle consumption in traffic and transportation networks.

Kerner, Boris S

2014-01-01T23:59:59.000Z

189

Trace formula for dielectric cavities III: TE modes  

E-Print Network [OSTI]

The construction of the semiclassical trace formula for the resonances with the transverse electric (TE) polarization for two-dimensional dielectric cavities is discussed. Special attention is given to the derivation of the two first terms of Weyl's series for the average number of such resonances. The obtained formulas agree well with numerical calculations for dielectric cavities of different shapes.

E. Bogomolny; R. Dubertrand

2012-06-15T23:59:59.000Z

190

DARK MATTER Tracing the "Cosmic Web" with Diffuse Gas  

E-Print Network [OSTI]

1 DARK MATTER STARS GAS NEUTRAL HYDROGEN Tracing the "Cosmic Web" with Diffuse Gas Quasar Quasar Absorption Lines Keck/HIRES Quasar Spectrum Observer baryons dark matter potential isotropic UV only on and the radiation field intensity... H I #12;5 GOAL: the primordial dark matter power spectrum

Steidel, Chuck

191

Generating and Analyzing Symbolic Traces of Simulink/Stateflow Models  

E-Print Network [OSTI]

of the model and the simulation traces. We propose a new represen­ tation, called the bounded vertex that enables the development, testing, and rapid prototyping of control software, supported by automated code, the semantics of these models is loosely defined in terms of a simulation engine. The lack of clearly specified

Sankaranarayanan, Sriram

192

Realistic Performance Analysis of WSN Protocols Through Trace Based Simulation  

E-Print Network [OSTI]

. Generic network simulators are often used, but they tend to rely on synthetic models. Because WSN enable trace based WSN simulation by first enhancing an existing WSN profiler that automates. These include simulation area, node density, radio model, noise model, etc. These parameters are used

Han, Qi "Chee"

193

Inferring human mobility patterns from taxicab location traces  

Science Journals Connector (OSTI)

Taxicabs equipped with real-time location sensing devices are increasingly becoming popular. Such location traces are a rich source of information and can be used for congestion pricing, taxicab placement, and improved city planning. An important problem ... Keywords: hidden markov models, human mobility patterns, taxi cab occupancy, trajectory analysis

Raghu Ganti; Mudhakar Srivatsa; Anand Ranganathan; Jiawei Han

2013-09-01T23:59:59.000Z

194

Learning web-service task descriptions from traces  

Science Journals Connector (OSTI)

This paper considers the problem of learning task specific web-service descriptions from traces of users successfully completing a task. Unlike prior approaches, we take a traditional machine-learning perspective to the construction of web-service models ... Keywords: Apprenticeship Learning, Machine Learning, Sample Complexity, Web Services

Thomas J. Walsh; Michael L. Littman; Alexander Borgida

2012-10-01T23:59:59.000Z

195

GROUP TESTING MEETS TRAITOR TRACING Peter Meerwald and Teddy Furon  

E-Print Network [OSTI]

of the restriction of M to K. Many papers have proposed bounds on the minimal num- ber of tests or practical designs noise (q is the false positive test probability) [2]. Sejdinovic and Johnson recently considered bothGROUP TESTING MEETS TRAITOR TRACING Peter Meerwald and Teddy Furon INRIA Rennes Bretagne Atlantique

Paris-Sud XI, Université de

196

Trace Environmental Quantitative Analysis: Principles, Techniques and Applications, 2nd  

E-Print Network [OSTI]

, California State UniVersity, Los Angeles JA0599418 10.1021/ja0599418 CRC Handbook of Chemistry and Physics and field- based techniques. Loconto's book does a superlative job of introducing the concept of trace edition of this famous handbook continues to provide up-to-date, critically evaluated chemical

Zubarev, Eugene

197

A Feasibility Study: Mining Daily Traces for Home Heating Control  

E-Print Network [OSTI]

savings as well as 14.9%­59.2% reduction in miss time. Keywords Energy, home heating, daily traces, prediction 1. INTRODUCTION Heating, ventilation and cooling (HVAC) contributes most to a home's energy bills, accounting for 48% of residential energy consumption in the U.S. and 61% in the U.K., 64% in Canada where

Whitehouse, Kamin

198

Age of Neoproterozoic Bilatarian Body and Trace Fossils, White  

E-Print Network [OSTI]

Age of Neoproterozoic Bilatarian Body and Trace Fossils, White Sea, Russia: Implications-bearing, shallow marine siliciclastic rocks in the Zimnie Gory section of the White Sea region indicates Ranges, South Australia (18); in the Poleta Formation in the White-Inyo Mountains and Upper Wood Canyon

199

A Parallelisation of Ray Tracing with Diffuse Interreflection Erik Reinhard  

E-Print Network [OSTI]

include a.i. architectural design, theatre and greenhouse lighting simulations and traffic lighting images of 3D scenes. However, the rendering of complex scenes under advanced lighting circumstances may scenes. It calculates the reflection of light in a scene by tracing the path of light backwards from

Reinhard, Erik

200

CACHING CHARACTERISTICS OF INTERNET AND INTRANET WEB PROXY TRACES  

E-Print Network [OSTI]

CACHING CHARACTERISTICS OF INTERNET AND INTRANET WEB PROXY TRACES Arthur Goldberg, Ilya Pevzner} This paper studies the caching characteristics of HTTP requests and responses that pass through production a large Internet Service Provider (ISP) and 2.0 million entries from an Intranet firewall are studied. We

Goldberg, Arthur P.

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

From transformation traces to transformation rules: Assisting Model Driven Engineering  

E-Print Network [OSTI]

From transformation traces to transformation rules: Assisting Model Driven Engineering approach. In this paper we are interested in semi-automatically gen- erating labelled graph (model) transformations conform to a particu- lar syntax (meta-model). Those transformations are basic operations in model driven

Paris-Sud XI, Université de

202

Container throughput estimation leveraging ship GPS traces and open data  

Science Journals Connector (OSTI)

Traditionally, the port container throughput, a crucial measurement of regional economic development, was manually collected by port authorities. This requires a large amount of human effort and often delays publication of this important figure. In this ... Keywords: AIS trace, container throughput estimation, open data

Longbiao Chen, Daqing Zhang, Gang Pan, Leye Wang, Xiaojuan Ma, Chao Chen, Shijian Li

2014-09-01T23:59:59.000Z

203

Gaussian beams in inhomogeneous anisotropic layered structures using dynamic  

E-Print Network [OSTI]

Gaussian beams in inhomogeneous anisotropic layered structures using dynamic ray tracing 31 Praha 4, Czech Republic. E-mail: ip@ig.cas.cz. Summary Gaussian beams, approximate solutions coordinates. This 3 Ã? 3 matrix simplifies considerably the computation of Gaussian beams at any paraxial

Cerveny, Vlastislav

204

Trace element partitioning between type B CAI melts and melilite and spinel: Implications for trace element distribution  

E-Print Network [OSTI]

. Partition coefficients between intermediate composition melilites and CAI melt are the following: Li, 0.5 size energetics analysis is used to assess isovalent partitioning into the different cation sites, interpreta- tion of the trace element and isotope compositions of CAIs, particularly the light elements Li

Mcdonough, William F.

205

Zevenhoven & Kilpinen TRACE ELEMENTS, ALKALI METALS 19.6.2001 8-1 Chapter 8 Trace elements,  

E-Print Network [OSTI]

air pollutants), "known or suspected of causing cancer or other serious health effects" (see also, in part stemming from anthropogenic sources, i.e. pollution. In wastes and waste-derived fuels the "trace to fouling of turbine blades (mainly Ca)or pollute or poison catalysts (mainly As) or sorbents downstream

Zevenhoven, Ron

206

Dairy Analytics and Nutrient Analysis (DANA) Prototype System User Manual  

SciTech Connect (OSTI)

This document is a user manual for the Dairy Analytics and Nutrient Analysis (DANA) model. DANA provides an analysis of dairy anaerobic digestion technology and allows users to calculate biogas production, co-product valuation, capital costs, expenses, revenue and financial metrics, for user customizable scenarios, dairy and digester types. The model provides results for three anaerobic digester types; Covered Lagoons, Modified Plug Flow, and Complete Mix, and three main energy production technologies; electricity generation, renewable natural gas generation, and compressed natural gas generation. Additional options include different dairy types, bedding types, backend treatment type as well as numerous production, and economic parameters. DANA’s goal is to extend the National Market Value of Anaerobic Digester Products analysis (informa economics, 2012; Innovation Center, 2011) to include a greater and more flexible set of regional digester scenarios and to provide a modular framework for creation of a tool to support farmer and investor needs. Users can set up scenarios from combinations of existing parameters or add new parameters, run the model and view a variety of reports, charts and tables that are automatically produced and delivered over the web interface. DANA is based in the INL’s analysis architecture entitled Generalized Environment for Modeling Systems (GEMS) , which offers extensive collaboration, analysis, and integration opportunities and greatly speeds the ability construct highly scalable web delivered user-oriented decision tools. DANA’s approach uses server-based data processing and web-based user interfaces, rather a client-based spreadsheet approach. This offers a number of benefits over the client-based approach. Server processing and storage can scale up to handle a very large number of scenarios, so that analysis of county, even field level, across the whole U.S., can be performed. Server based databases allow dairy and digester parameters be held and managed in a single managed data repository, while allows users to customize standard values and perform individual analysis. Server-based calculations can be easily extended, versions and upgrades managed, and any changes are immediately available to all users. This user manual describes how to use and/or modify input database tables, run DANA, view and modify reports.

Sam Alessi; Dennis Keiser

2012-10-01T23:59:59.000Z

207

Multiple stirred-flow chamber assembly for simultaneous automatic fractionation of trace elements in fly ash samples using a multisyringe-based flow system  

SciTech Connect (OSTI)

There is a current trend in automation of leaching tests for trace elements in solid matrixes by use of flow injection based column approaches. However, as a result of the downscaled dimensions of the analytical manifold and execution of a single extraction at a time, miniaturized flow-through column approaches have merely found applications for periodic investigations of trace element mobility in highly homogeneous environmental solids. A novel flow-based configuration capitalized on stirred-flow cell extraction is proposed in this work for simultaneous fractionation of trace elements in three solid wastes with no limitation of sample amount up to 1.0 g. A two-step sequential extraction scheme involving water and acetic acid (or acetic acid/acetate buffer) is utilized for accurate assessment of readily mobilizable fractions of trace elements in fly ash samples. The W automated extraction system features high tolerance to flow rates ({<=} 6 mL min{sup -1}) and, as opposed to operationally defined batchwise methods, the solid to liquid ratio is not a critical parameter for, determination of overall readily leachable trace elements provided that exhaustive extraction is ensured. Analytical performance of the dynamic extractor is evaluated for fractionation analysis of a real coal fly ash and BCR-176R fly ash certified reference material. No significant differences were found at the 0.05 significance level between summation of leached concentrations in each fraction plus residue and concentration values of BCR-176R, thus revealing the accuracy of the automated method. Overall extractable pools of trace metals in three samples are separated in less than 115 min, even for highly contaminated ashes, versus 18-24 h per fraction in equilibrium leaching tests. The multiple stirred-flow cell assembly is thus suitable for routine risk assessment studies of industrial solid byproduct.

Boonjob, W.; Miro, M.; Cerda, V. [Mahidol University, Bangkok (Thailand). Faculty of Science

2008-10-01T23:59:59.000Z

208

Trace metal uptake and accumulation pathways in Kemp's ridley sea turtles (Lepidochelys kempii)  

E-Print Network [OSTI]

Little is known of trace metal concentrations and their possible role in the mortality of critically endangered Kemp??s ridley sea turtles (Lepidochelys kempii). Research described herein characterized concentrations of seven trace metals ?? Ag, Cd...

Wang, Hui-Chen

2005-08-29T23:59:59.000Z

209

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R. Wilson  

E-Print Network [OSTI]

Trace Reduction for Virtual Memory Simulations Scott F. Kaplan, Yannis Smaragdakis, and Paul R reduction. Neither requires that the simulator be modi ed to accept the reduced trace. This research

Smaragdakis, Yannis

210

Determination of trace impurities in zircaloy-2 and tellurium by spark source mass spectrometry  

Science Journals Connector (OSTI)

Determination of trace impurities in zircaloy-2 and tellurium by Spark Source Mass Spectrometry (SSMS) is reported. The advantage of SSMS lies in the fact that along with metallic trace constituents even the n...

K. L. Ramakumar; V. A. Raman; V. L. Sant…

1988-12-01T23:59:59.000Z

211

An Attack on a TraceZero Cryptosystem Claus Diem and Jasper Scholten  

E-Print Network [OSTI]

An Attack on a Trace­Zero Cryptosystem Claus Diem and Jasper Scholten Institut fË?ur Experimentelle

Diem, Claus

212

Reactive Uptake of Trace Metals in the Hyporheic Zone of a  

E-Print Network [OSTI]

that Mn oxides in the hyporheic zone enhance trace metal uptake. Reach-scale mass-balance calculations

213

The role of trace gas flux networks in biogeosciences  

SciTech Connect (OSTI)

Vast networks of meteorological sensors ring the globe, providing continuous measurements of an array of atmospheric state variables such as temperature, humidity, rainfall, and the concentration of carbon dioxide [New etal., 1999; Tans etal., 1996]. These measurements provide input to weather and climate models and are key to detecting trends in climate, greenhouse gases, and air pollution. Yet to understand how and why these atmospheric state variables vary in time and space, biogeoscientists need to know where, when, and at what rates important gases are flowing between the land and the atmosphere. Tracking trace gas fluxes provides information on plant or microbial metabolism and climate-ecosystem interactions. The existence of trace gas flux networks is a relatively new phenomenon, dating back to research in 1984. The first gas flux measurement networks were regional in scope and were designed to track pollutant gases such as sulfur dioxide, ozone, nitric acid, and nitrogen dioxide. Atmospheric observations and model simulations were used to infer the depositional rates of these hazardous chemicals [Fowler etal., 2009; Meyers etal., 1991]. In the late 1990s, two additional trace gas flux measurement networks emerged. One, the United States Trace Gas Network (TRAGNET), was a short-lived effort that measured trace gas emissions from the soil and plants with chambers distributed throughout the country [Ojima etal., 2000]. The other, FLUXNET, was an international endeavor that brought many regional networks together to measure the fluxes of carbon dioxide, water vapor, and sensible heat exchange with the eddy covariance technique [Baldocchi etal., 2001]. FLUXNET, which remains active today, currently includes more than 400 tower sites, dispersed across most of the world's climatic zones and biomes, with sites in North and South America, Europe, Asia, Africa, and Australia. More recently, several specialized networks have emerged, including networks dedicated to urban areas (Urban Fluxnet), nitrogen compounds in Europe (NitroEurope), and methane (MethaneNet). Technical Aspects of Flux Networks Eddy covariance flux measurements are the preferred method by which biogeoscientists measure trace gas exchange between ecosystems and the atmosphere [Baldocchi, 2003].

Baldocch, Dennis [Department of Environmental Science, Policy and Management, University of California, Berkeley,; Reichstein, Markus [Max Planck Institute for Biogeochemistry; Papale, D. [University of Tuscia; KOTEEN, LAURIE [University of California, Berkeley; VARGAS, RODRIGO [Ensenada Center for Scientific Research and Higher Education (CICESE); Agarwal, D.A [Lawrence Berkeley National Laboratory (LBNL); Cook, Robert B [ORNL

2012-01-01T23:59:59.000Z

214

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network [OSTI]

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power There is a large literature on the traces of powers of random elements of compact Lie groups. One of the earliest

Fulman, Jason

215

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network [OSTI]

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power on the traces of powers of random elements of compact Lie groups. One of the earliest results is due to Diaconis

Fulman, Jason

216

LES BIG DATA ET LA RELATION CLIENT Quand les traces numriques organisent l'change marchand  

E-Print Network [OSTI]

LES BIG DATA ET LA RELATION CLIENT Quand les traces numériques organisent l'échange marchand Auteur traces numériques organisent l'échange marchand Résumé : Avec le mouvement de digitalisation du commerce marchands font des comportements des consommateurs. Ces traces numériques doivent donc permettre aux

Paris-Sud XI, Université de

217

Microbial acidification and pH effects on trace element release from sewage sludge  

E-Print Network [OSTI]

Microbial acidification and pH effects on trace element release from sewage sludge Shabnam Qureshia; Trace metals; Mobilization; Land application 1. Introduction Trace elements in land-applied wastewater sludge (sewage biosolids) are potentially phyto- or zoo-toxic if present in sufficient concentration

Walter, M.Todd

218

CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE?  

E-Print Network [OSTI]

CAN THE GEOCHEMICAL TOPSOIL ATLAS BE USED TO PREDICT TRACE METAL DEFICIENCY IN CATTLE? By: Emily courtesy LTSN Bioscience. http://bio.ltsn.ac.uk/imagebank/ Just as trace metals are important to humans to the structural stability of molecules and membranes. For these reasons, incorrect trace metal levels can

Nottingham, University of

219

Desorption Electrospray Ionization Mass Spectrometry for Trace Analysis of Agrochemicals in Food  

Science Journals Connector (OSTI)

Desorption Electrospray Ionization Mass Spectrometry for Trace Analysis of Agrochemicals in Food ... Desorption electrospray ionization (DESI) is applied to the rapid, in situ, direct qualitative and quantitative (ultra)trace analysis of agrochemicals in foodstuffs. ... The results proved that DESI allows the detection and confirmation of traces of agrochemicals in actual market-purchased samples. ...

Juan F. García-Reyes; Ayanna U. Jackson; Antonio Molina-Díaz; R. Graham Cooks

2008-12-17T23:59:59.000Z

220

Temporal variability in chemical cycling of the subterranean estuary and associated chemical loading to the coastal ocean  

E-Print Network [OSTI]

At the land-ocean interface, terrestrial groundwater interacts with seawater to form a subterranean estuary, which can play host to dynamic biogeochemical cycling of nutrients, trace metals and radionuclides. This chemically ...

Gonneea, Meagan Joan Eagle

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters-  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Details Activities (3) Areas (1) Regions (0) Abstract: A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was >=1.8_107 m3/yr draining an area that receives an estimated

222

Fault simulation of combinational circuits based on critical path tracing  

E-Print Network [OSTI]

FAULT SIMULATION Ol' COMBINATIONAI, CIRCUITS BASED ON CRITICAL PATH TRACING A Thesis by CHARLES JAMES BURNETT Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1992 Major Subject: Electrical Engineering FAULT SIIUIULATION OF COMBINATlONAL CIRCUITS BASED ON CRITICAL PATH TRACINC A Thesis CHARLES JAMES BURNETT Approved as to style and content by: Don E. Ross (Chair of Committee...

Burnett, Charles James

1992-01-01T23:59:59.000Z

223

Trace determination of lead by helium-4 activation analysis  

E-Print Network [OSTI]

glass samples doped with 61 different trace elements at nominal 500 to 1 ppm level concentrations. We evaluated the measurement sensitivities of two methods for alpha counting, i. e. , surface barrier detector and nuclear track detectors. Detection.... An automated system synchronized irradiation, solenoid operation, and data acquisition. Prior to irradiation, the solenoid was energized to position the aluminum sheet in front of the detector. The cyclotron's beam pulser system then began irradiation...

Vargas Bernal, Maria E.

2012-06-07T23:59:59.000Z

224

Assessing interactions between nutrients and toxicity : influences of nitrogen and phosphorus on triclosan toxicity to the aquatic macrophyte "lemna gibba".  

E-Print Network [OSTI]

??In the present study, influences of nutrient availability on triclosan toxicity to a model aquatic macrophyte Lemna gibba were explored. Triclosan effective concentrations varied by… (more)

Fulton, Barry A.

2009-01-01T23:59:59.000Z

225

Using fluorescence spectroscopy to trace seasonal DOM dynamics, disturbance effects, and hydrologic transport in the Florida  

E-Print Network [OSTI]

cycle processes in the Everglades and aquatic ecosystems worldwide. Citation: Larsen, L. G., G. R. Aiken spectra establish the technique as a promising performance measure for restoration or indicator of carbon

226

Biosystem Dynamics & Design | EMSL  

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

Biosystem Dynamics & Design Overview Atmospheric Aerosol Systems Biosystem Dynamics & Design Energy Materials & Processes Terrestrial & Subsurface Ecosystems Biosystem Dynamics &...

227

Spatial Heterogeneity of Trace Species Distributions in the...  

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

of Radiative Forcing and Climate Change at GFDL: A Perspective V. Ramaswamy NOAA Geophysical Fluid Dynamics Laboratory Princeton University Climate and Climate Change * Basic...

228

The Brazil Eucalyptus Potential Productivity Project: Influence of water, nutrients and stand uniformity on wood production  

E-Print Network [OSTI]

The Brazil Eucalyptus Potential Productivity Project: Influence of water, nutrients and stand, Brazil f Veracel Celulose, Eunapolis, Bahia, Brazil g International Paper do Brasil, Mogi Guacu, Sao Paulo, Brazil h Suzano Papel e Celulose, Teixeira de Freitas, Bahia, Brazil i CENIBRA, Ipatinga, Minas

Binkley, Dan

229

Continental Shelf Research 21 (2001) 587606 Nutrient enrichment off Port Stephens  

E-Print Network [OSTI]

Continental Shelf Research 21 (2001) 587­606 Nutrient enrichment off Port Stephens: the role of the dinoflagellate Noctiluca scintillans occurred off Port Stephens, on the New South Wales (NSW) central coast water into the euphotic zone off Port Stephens. To this end, a regional model of the NSW coast

Oke, Peter

230

An analysis of the nutrient removal capacity of agriculturally impacted vs. restored riparian wetlands.  

E-Print Network [OSTI]

An analysis of the nutrient removal capacity of agriculturally impacted vs. restored riparian removal capacity of agriculturally impacted vs. restored riparian wetlands. Chad Yaindl Lafayette College the consequences of agriculture on streams, solute addition experiments were performed on four streams: a cranberry

Vallino, Joseph J.

231

Nutrient Management of Conservation-Till Cotton in Terminated-Wheat  

E-Print Network [OSTI]

Nutrient Management of Conservation- Till Cotton in Terminated-Wheat K.F. Bronson, J.W. Keeling, R, respectively. #12;A conservation-till cotton production system using wheat or rye winter cover, terminated (Lascano et al., 1994). Conservation-till cotton in the High Plains can be as productive as and more

Mukhtar, Saqib

232

Algae as Nutrient Material for studying Ca-Sr Relationships in Heterotrophic Organisms  

Science Journals Connector (OSTI)

... The feasibility of such a use for the alga, however, depends on several suppositions. The first is that the ... , however, depends on several suppositions. The first is that the alga will provide all the organic nutrients needed by the heterotroph; second, that the ...

TOM E. DENTON; J. C. O'KELLEY

1970-09-12T23:59:59.000Z

233

Oceanic nutrient and oxygen transports and bounds on export production during the World Ocean Circulation Experiment  

E-Print Network [OSTI]

of intense climate interest. A large fraction of the carbon fixed in the oceanic surface waters is recycledOceanic nutrient and oxygen transports and bounds on export production during the World Ocean are estimated from selected hydrographic sections from the World Ocean Circulation Experiment spanning the world

Wunsch, Carl

234

Nutrient Limitation across a salinity gradient of Martha's Vineyard Coastal Ponds Emily S Rogers  

E-Print Network [OSTI]

Nutrient Limitation across a salinity gradient of Martha's Vineyard Coastal Ponds Emily S Rogers and their respective salinities were Long Cove Pond, 1ppt, Little Jobs Pond, 4ppt, Jobs Neck Pond, 9ppt, Chilmark Pond. There was a strong correlation between ammonium limitation and salinity. There was very little response

Vallino, Joseph J.

235

Diagnosis & Correction of Soil Nutrient Limitations in Intensively managed southern pine forests  

SciTech Connect (OSTI)

Forest productivity is one manner to sequester carbon and it is a renewable energy source. Likewise, efficient use of fertilization can be a significant energy savings. To date, site-specific use of fertilization for the purpose of maximizing forest productivity has not been well developed. Site evaluation of nutrient deficiencies is primarily based on empirical approaches to soil testing and plot fertilizer tests with little consideration for soil water regimes and contributing site factors. This project uses mass flow diffusion theory in a modeling context, combined with process level knowledge of soil chemistry, to evaluate nutrient bioavailability to fast-growing juvenile forest stands growing on coastal plain Spodosols of the southeastern U.S. The model is not soil or site specific and should be useful for a wide range of soil management/nutrient management conditions. In order to use the model, field data of fast-growing southern pine needed to be measured and used in the validation of the model. The field aspect of the study was mainly to provide data that could be used to verify the model. However, we learned much about the growth and development of fast growing loblolly. Carbon allocation patterns, root shoot relationships and leaf area root relationships proved to be new, important information. The Project Objectives were to: (1) Develop a mechanistic nutrient management model based on the COMP8 uptake model. (2) Collect field data that could be used to verify and test the model. (3) Model testing.

University of Florida

2002-10-25T23:59:59.000Z

236

Ecological Modelling 185 (2005) 231243 Modeling stream water nutrient concentrations and loadings  

E-Print Network [OSTI]

to stream flooding. According to the assessments of the model simulations and the field measurements 2004 Abstract A process-based biogeochemistry model, ForNBM, was used to simulate stream water nutrient with the field measurement data from 1973 to 1985, the simulation results show that the best simulation of stream

Mazumder, Asit

237

Biological response to millennial variability of dust and nutrient supply in the Subantarctic South Atlantic Ocean  

Science Journals Connector (OSTI)

...PS2498-1 with EDC dust fluxes (solid black lines in figure-2...PS2498-1 and TN057-06 were recovered from sites on the eastern flank...nutrients as the primary source to fuel Subantarctic productivity...the EDC dust flux are shown as solid black lines. (c) Flux of...

2014-01-01T23:59:59.000Z

238

1 Introduction In many soils of the tropics the nutrient losses by leaching  

E-Print Network [OSTI]

without fertilization, nutrient leaching can be very high especially after slash-and-burn interventions vertically from the soil surface or laterally from a soil pit. Cumulative leaching of NO3 ± and NH4. Therefore, a lateral installation of medium sized resin cores (100 mm diameter) from a soil pit was superior

Lehmann, Johannes

239

PA Nutrient Management Regulations: Act 38 of 2005 Summary of Regulations  

E-Print Network [OSTI]

PA Nutrient Management Regulations: Act 38 of 2005 Summary of Regulations Effective October 1, 2006 Who is regulated under this law (see Fact Sheet 54, from PSU): o Must be high animal density AND must of animals/4 acres = 2,500 lbs per acre (this is a regulated farm) o Also must have over 8,000 lbs of animals

Guiltinan, Mark

240

The Effect of Land Use and Its Management Practices on Plant Nutrient Availability and Carbon Sequestration  

E-Print Network [OSTI]

on soil degradation on both physical and chemical property of soil as well as on soil carbon sequestration availability and soil carbon sequestration in Bezawit Sub- Watershed, near Bahir Dar, Ethiopia. More The Effect of Land Use and Its Management Practices on Plant Nutrient Availability and Carbon

Walter, M.Todd

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Simulation for Year-Round Nutrient Uptake of Greenhouse Roses over Flowering Cycles  

E-Print Network [OSTI]

65 Simulation for Year-Round Nutrient Uptake of Greenhouse Roses over Flowering Cycles Wan-Soon Kim Protected Horticulture Experiment Station NHRI, RDA Busan 618-800 Korea Dept. of Plant Sciences University of roses, coupled with a whole-plant growth model based on light use efficiency (LUE). The study consisted

Lieth, J. Heinrich

242

Prediction of sediment-bound nutrient delivery from semi-arid California watersheds  

E-Print Network [OSTI]

, 1981], or sequestered in terrestrial or offshore deposits [Ritchie, 1989; Stallard, 1998]. The specific in offshore sedimentary deposits represents a net CO2 sink [Berner, 1982]. As with SOC, the erosion of N and P nutrients for plant growth. In addition, the loss of N and P from hillslopes contributes

Gabet, Emmanuel "Manny"

243

Silicic acid leakage from the Southern Ocean: Opposing effects of nutrient uptake and oceanic circulation  

E-Print Network [OSTI]

to the thermocline region of low latitudes. The power of Southern Ocean intermediate waters to affect phytoplanktonSilicic acid leakage from the Southern Ocean: Opposing effects of nutrient uptake and oceanic in formation rate of Southern Ocean intermediate waters. Comparison of d30 Si records from the Southern Ocean

Pahnke, Katharina

244

Long-term reductions in anthropogenic nutrients link to improvements in Chesapeake Bay habitat  

E-Print Network [OSTI]

Waterfront Campus, Southampton SO14 3ZH, United Kingdom; and b US Geological Survey, Reston, VA 20192 Edited goals have not been met. In the Potomac River, however, reduced in situ nutrients, wastewater at the Blue Plains Wastewater Treatment Plant (Fig. 1) in 1980 as well as phosphorus-effluent filters in 1982

245

M.V.W. Caldeira et al.Quantification of nutrient content of Acacia Original article  

E-Print Network [OSTI]

-ground biomass components (leaves, living branches, dead branches, bark and wood) of nine sampled trees were, and 74% of S of the above-ground biomass. In the trunk (bark and wood), which represents the remaining 57 of nutrient content in above-ground biomass of young Acacia mearnsii De Wild., provenance Bodalla Marcos

Boyer, Edmond

246

Nutrient cycling and distribution in different-aged plantations of Chinese fir in southern China  

E-Print Network [OSTI]

Nutrient cycling and distribution in different-aged plantations of Chinese fir in southern China in revised form 25 January 2007; accepted 7 February 2007 Abstract The distribution in tree biomass), potassium (K), calcium (Ca) and magnesium (Mg) were measured in young, middle-aged and mature plantations (8

Heal, Kate

247

Aquatic Botany 64 (1999) 369380 Interactive effects of N and P on growth, nutrient  

E-Print Network [OSTI]

and NH4 uptake kinetics by Phragmites australis José Antonio Romero a , Hans Brix b , Francisco A. Com mol l-1) on growth, nutrient allocation and ammonium uptake kinetics by Phragmites australis (Cav; Root respiration; Die-back; Acclimation; N : P ratio; Phragmites australis Corresponding author. Tel

Brix, Hans

248

The role of organic carbon, iron, and aluminium oxyhydroxides as trace metal carriers: Comparison between the Trinity River and the Trinity River Estuary (Galveston Bay, Texas)  

Science Journals Connector (OSTI)

Concentrations of many trace elements in aquatic systems can become enriched due to anthropogenic as well as natural processes. In order to investigate particle enrichment processes from the river through an estuary, the changes in solid phase speciation and particle–water partitioning of a number of trace metals (e.g., Fe, Pb, Cd, Cu, Ni, Zn, Co, V) were evaluated from the Trinity River through Galveston Bay to the Ocean. An established way to detect anthropogenic contamination is by normalization of contaminant concentrations to Fe, Al, and/or organic carbon (OC). Particulate metal (Mn, Co, Ni, Cu, Pb, V, Ni, Zn, Cd) to Fe, Al, and metal to OC ratios were determined in waters of the Trinity River and Galveston Bay, in order to test 1) if the system is contaminated, and 2) whether Fe, Al, or organic carbon act as a master variable for determining metal concentrations. All particulate trace metals from Trinity River were present in ratios to Fe or Al similar to those from drainage basin soils, which were similar to world world-average soil. As expected, concentrations of Fe, Al and OC in particles from both the Trinity River as well as Galveston Bay were strongly correlated, from which one might conclude that Fe can be used as a reference element that is representative for all three of them. However, ratios to Fe of particle-reactive elements, such as Pb, were found to be significantly and positively correlated to the Fe content of particles from Galveston Bay, while nutrient-type elements, such as Cu, Ni, and Cd, were negatively correlated to their Fe content. Interestingly, suspended particles from the Trinity River did not exhibit any such correlations at all and only varied within a very limited range. The reason for such distinctive correlative behavior that distinguishes riverine from estuarine particles is likely caused by internal cycling of these elements within Galveston Bay, and their relationship to OC. Relationships of trace metals to OC revealed that differences in sources and cycling of OC in the estuary significantly altered the soil imprinted particle make-up. Results from selective leaching experiments of suspended particles in Galveston Bay confirmed the selective enrichment and fractionation processes for the different metals.

Liang-Saw Wen; Kent W. Warnken; Peter H. Santschi

2008-01-01T23:59:59.000Z

249

Variance in trace constituents following the final stratospheric warming  

SciTech Connect (OSTI)

Temporal variances in the concentration of trace species are examined within the northern hemisphere stratosphere following the final warming. Variances are computed utilizing an annual cycle run of a tracer transport model and stratospheric balloon observations. The model uses winds generated with a general circulation model to transport N{sub 2}O. Regions of significant N{sub 2}O variance are produced immediately following the modeled final warming as zonally inhomogeneous N{sub 2}O anomalies are created during the warming, then advected passively about the pole by easterly winds. Diffusion rapidly dissipates these anomalies and decreases the associated stratospheric tracer variance to very low levels by June. On monthly timescales the 10 day normal mode explains up to 50% of the modeled variance of N{sub 2}O during summer. On these timescales potential temperature exhibits less variability than N{sub 2}O, as horizontal parcel displacements are relatively ineffective at inducing potential temperature variability. An examination of balloon observations of N{sub 2}O and other long lived trace species, between 40{degree} and 50{degree}N, indicates that the primary component of the tracer variance during June is on an interannual time scale. The authors attribute this interannual variability to stratospheric variability during the winter and early spring months imprinted onto the distributions of long lived tracers. Potential temperatures does not exhibit much interannual variability because it does not retain a memory of the previous winters circulation.

Hess, P. (Univ. of Washington, Seattle (USA))

1990-08-20T23:59:59.000Z

250

Ray-tracing for complex astrophysical high-opacity structures  

E-Print Network [OSTI]

We present a ray-tracing technique for radiative transfer modeling of complex three-dimensional (3D) structures which include dense regions of high optical depth like in dense molecular clouds, circumstellar disks, envelopes of evolved stars, and dust tori around active galactic nuclei. The corresponding continuum radiative transfer problem is described and the numerical requirements for inverse 3D density and temperature modeling are defined. We introduce a relative intensity and transform the radiative transfer equation along the rays to solve machine precision problems and to relax strong gradients in the source term. For the optically thick regions where common ray-tracers are forced to perform small trace steps, we give two criteria for making use of a simple approximative solver crossing the optically thick region quickly. Using an example of a density structure with optical depth changes of 6 orders of magnitude and sharp temperature variations, we demonstrate the accuracy of the proposed scheme using a common 5th-order Runge-Kutta ray-tracer with adaptive step size control. In our test case, the gain in computational speed is about a factor of 870. The method is applied to calculate the temperature distribution within a massive molecular cloud core for different boundary conditions for the radiation field.

J. Steinacker; A. Bacmann; Th. Henning

2006-03-17T23:59:59.000Z

251

Green Algae as Model Organisms for Biological Fluid Dynamics  

E-Print Network [OSTI]

In the past decade the volvocine green algae, spanning from the unicellular $Chlamydomonas$ to multicellular $Volvox$, have emerged as model organisms for a number of problems in biological fluid dynamics. These include flagellar propulsion, nutrient uptake by swimming organisms, hydrodynamic interactions mediated by walls, collective dynamics and transport within suspensions of microswimmers, the mechanism of phototaxis, and the stochastic dynamics of flagellar synchronization. Green algae are well suited to the study of such problems because of their range of sizes (from 10 $\\mu$m to several millimetres), their geometric regularity, the ease with which they can be cultured and the availability of many mutants that allow for connections between molecular details and organism-level behavior. This review summarizes these recent developments and highlights promising future directions in the study of biological fluid dynamics, especially in the context of evolutionary biology, that can take advantage of these remarkable organisms.

Raymond E. Goldstein

2014-09-08T23:59:59.000Z

252

Green Algae as Model Organisms for Biological Fluid Dynamics  

E-Print Network [OSTI]

In the past decade the volvocine green algae, spanning from the unicellular $Chlamydomonas$ to multicellular $Volvox$, have emerged as model organisms for a number of problems in biological fluid dynamics. These include flagellar propulsion, nutrient uptake by swimming organisms, hydrodynamic interactions mediated by walls, collective dynamics and transport within suspensions of microswimmers, the mechanism of phototaxis, and the stochastic dynamics of flagellar synchronization. Green algae are well suited to the study of such problems because of their range of sizes (from 10 $\\mu$m to several millimetres), their geometric regularity, the ease with which they can be cultured and the availability of many mutants that allow for connections between molecular details and organism-level behavior. This review summarizes these recent developments and highlights promising future directions in the study of biological fluid dynamics, especially in the context of evolutionary biology, that can take advantage of these re...

Goldstein, Raymond E

2014-01-01T23:59:59.000Z

253

Tracing the behavior of parallel applications on extreme-scale systems |  

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

Tracing the behavior of parallel applications on extreme-scale systems Tracing the behavior of parallel applications on extreme-scale systems January 3, 2014 Tweet EmailPrint Event-tracing tools have proved vital for understanding how parallel applications behave. But new challenges make the use of event tracing on extreme-scale machines problematic. Tracing tools generate large amounts of data, which can overload the parallel file system and skew the application being studied. To remedy this problem, researchers from Argonne National Laboratory, the Technische Universität Dresden in Germany, and Oak Ridge National Laboratory have devised a new technique that enables event tracing on exascale systems. Scientists who have been using existing performance analysis tools find that these frequently do not scale to large systems. And even if they do

254

Precise lattice location of trace elements within minerals and at their surfaces with x?ray standing waves (abstract)  

Science Journals Connector (OSTI)

Using x?ray standing waves (XSW) generated by dynamical Bragg diffraction we have precisely measured lattice locations of trace elements within and at the surface of mineral single crystals. Natural calcite samples were cleaved along the (1014) plane to obtain pristine surfaces. After cleavage some samples were reacted with a dilute aqueous Pb solution to obtain Pb?sorbed surfaces. XSW measurements were then performed on both unreacted and reacted samples using the calcite (1014) Bragg reflection. Results of these XSW measurements show that the naturally occurring trace element M substitutes for C. On the Pb?reacted calcite sample Pb was located on the calcite (1014) lattice plane where C atoms also reside. Our measurements clearly demonstrate a new and powerful application of synchrotron radiation in earth and environmental sciences to provide element?specific atomic?scale structural information within and at the surface of minerals. The XSW measurements were made at the NSLS X15A and X25 beamlines.

Y. Qian

1996-01-01T23:59:59.000Z

255

Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen, and Ingo Wald  

E-Print Network [OSTI]

Scientific Computing and Imaging Institute University of Utah Salt Lake City, Utah 84112 Email: {knolla1 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen, and Ingo Wald

Wald, Ingo

256

Computer analysis of holographic systems by means of vector ray tracing  

Science Journals Connector (OSTI)

This paper describes a computer program based on Welford's vector analysis approach capable of ray tracing through hybrid optical systems containing both conventional and diffractive...

Holloway, H W; Ferrante, R A

1981-01-01T23:59:59.000Z

257

TRACING THE CONTAMINANT HISTORY OF AN URBAN WATERSHED THROUGH AN EXAMINATION OF AQUATIC  

E-Print Network [OSTI]

TRACING THE CONTAMINANT HISTORY OF AN URBAN WATERSHED THROUGH AN EXAMINATION OF AQUATIC SEDIMENTS. A smaller organic contaminant database indicates sediment PAH levels exceed probable effect level criteria

258

E-Print Network 3.0 - atmospheric trace metals Sample Search...  

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

Sciences and Ecology 2 Chapter 1: Modelling Past Environmental Changes Using Lake Sediment Records Summary: of the anthropogenic fluxes of many potentially toxic trace metals...

259

Speciation of trace metals in seawater by anodic stripping voltammetry: Critical analytical steps  

Science Journals Connector (OSTI)

The speciation of trace metals in seawater based on the voltammetric (DPASV) titration ... to sample contaminations during sampling, filtration and storage, displacement of complexing equilibria in freeze storage

G. Capodaglio; G. Scarponi; G. Toscano…

260

E-Print Network 3.0 - airborne trace element Sample Search Results  

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

Search Sample search results for: airborne trace element Page: << < 1 2 3 4 5 > >> 1 AIR-DEPOSITED POLLUTION IN THE ANACOSTIA RIVER WATERSHED Summary: pollution in Lake...

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

The effects of metal and nutrient addition on Ribbed Mussels, Geukensia demissa, in the Great Sippewissett Salt Marsh and Eel Pond  

E-Print Network [OSTI]

the potential effects of nutrient loading and heavy metal pollution on salt marshes, researchers established highly contaminated with heavy metals. Nutrient additions did not promote or deter the health of mussels Marsh plots, perhaps a result of metal contamination. Keywords Salt marsh, nutrients, heavy metals

Vallino, Joseph J.

262

Introduction Basic dynamics  

E-Print Network [OSTI]

Introduction Basic dynamics The Gulf Stream The thermohaline circulation Ocean currents: some Ocean currents: some misconceptions and some dynamics #12;Introduction Basic dynamics The Gulf Stream. Geosciences Ocean currents: some misconceptions and some dynamics #12;Introduction Basic dynamics The Gulf

LaCasce, Joseph H.

263

A model of the AGS based on stepwise ray-tracing through the measured field maps of the main magnets  

SciTech Connect (OSTI)

Two-dimensional mid-plane magnetic field maps of two of the main AGS magnets were produced, from Hall probe measurements, for a series of different current settings. The analysis of these data yielded the excitation functions [1] and the harmonic coefficients [2] of the main magnets which have been used so far in all the models of the AGS. The constant increase of the computation power makes it possible today to directly use a stepwise raytracing through these measured field maps with a reasonable computation time. We describe in detail how these field maps have allowed the generation of models of the 6 different types of AGS main magnets, and how they are being handled with the Zgoubi ray-tracing code [3]. We give and discuss a number of results obtained regarding both beam and spin dynamics in the AGS, and we provide comparisons with other numerical and analytical modelling methods.

Dutheil Y.; Meot, F.; Tsoupas, N.

2012-05-20T23:59:59.000Z

264

Trace gases, CO2, climate, and the greenhouse effect  

Science Journals Connector (OSTI)

Weather is driven by the sun’s energy input and the difference between insolation per unit area of the poles and the equator. The energy flux of the Earth is in long?term balance—as much is radiated away by the Earth as is absorbed or the mean temperature would have to increase or decrease steadily (and of course this is not observed). CO2 and other ‘‘trace gases’’ can cause the Earth’s mean temperature to rise through the Greenhouse Effect. The mean temperature in the Little Ice Age was only 1?°C cooler but large effects were felt especially toward the poles. The CO2 which stays in the atmosphere will raise Earth’s mean temperature with effects which are relatively certain: a lot of warming at the poles and a very small amount of warming at the equator.

Gordon J. Aubrecht II

1988-01-01T23:59:59.000Z

265

Development of a trace explosives detection portal for personnel screening  

SciTech Connect (OSTI)

The authors discuss the development, design, and operation of a walk-through trace detection portal designed to screen personnel for explosives. Developed at Sandia National Laboratories (SNL) with primary funding from the Federal Aviation Administration (FAA) and additional support from the Department of Energy office of Safeguards and Security, this portal is intended primarily for use in airport terminals and in other localities where a very high throughput of pedestrian traffic is combined with stringent security requirements. The portal is capable of detecting both vapor and particulate contamination, with the collection of explosive material being based upon the entrainment of that material in air flows over the body of the person being screened. This portal is capable of detecting most types of common high explosives of interest to the FAA. The authors discuss the results of field testing of the portal in the Albuquerque International Airport in September, 1997 and more recent steps towards commercialization of the portal.

Parmeter, J.E.; Linker, K.L.; Rhykerd, C.L. Jr.; Bouchier, F.A.; Hannum, D.W.

1998-08-01T23:59:59.000Z

266

Engineering development of selective agglomeration: Trace element removal study  

SciTech Connect (OSTI)

Southern Company Services, Inc., (SCS) was contracted in 1989 by the US Department of Energy (DOE) to develop a commercially acceptable selective agglomeration technology to enhance the use of high-sulfur coals by 1993. The project scope involved development of a bench-scale process and components, as well as the design, testing, and evaluation of a proof-of-concept (POC) facility. To that end, a two-ton-per-hour facility was constructed and tested near Wilsonville, Alabama. Although it was not the primary focus of the test program, SCS also measured the ability of selective agglomeration to remove trace elements from coal. This document describes the results of that program.

Not Available

1993-09-01T23:59:59.000Z

267

Tracing of Error in a Time Series Data  

E-Print Network [OSTI]

A physical (e.g. astrophysical, geophysical, meteorological etc.) data may appear as an output of an experiment or it may contain some sociological, economic or biological information. Whatever be the source of a time series data some amount of noise is always expected to be embedded in it. Analysis of such data in presence of noise may often fail to give accurate information. Although text book data filtering theory is primarily concerned with the presences of random, zero mean errors; but in reality, errors in data are often systematic rather than random. In the present paper we produce different models of systematic error in the time series data. This will certainly help to trace the systematic error present in the data and consequently that can be removed as possible to make the data compatible for further study.

Koushik Ghosh; Probhas Raychaudhuri

2007-01-30T23:59:59.000Z

268

Trace gas measurements in the Kuwait oil fire smoke plume  

SciTech Connect (OSTI)

The authors report trace gas measurements made both inside and outside the Kuwait oil-fire smoke plume during a flight of an instrumented research aircraft on May 30, 1991. Concentrations of SO{sub 2}, CO, and NO{sub x} averaged vertically and horizontally throughout the plume 80 km downwind of Kuwait City were 106, 127, and 9.1 parts per billion by volume (ppbv), respectively, above background concentrations. With the exception of SO{sub 2}, trace gas concentrations were far below typical US urban levels and primary national ambient air quality standards. Ambient ozone was titrated by NO in the dark, dense core of the smoke plume close to the fires, and photochemical ozone production was limited to the diffuse edge of the plume. Photochemical O{sub 3} production was noted throughout the plume at a distance of 160 km downwind of Kuwait City, and averaged 2.3 ppbv per hour during the first 3 hours of transport. Little additional photochemical production was noted at a downwind range of 340 km. The fluxes of sulfur dioxide, carbon monoxide, and reactive nitrogen from the roughly 520 fires still burning on May 30, 1991 are estimated at 1.4 x 10{sup 7} kg SO{sub 2}/d, 6.9 x 10{sup 6} kg CO/d, and 2.7 x 10{sup 5} kg N/d, respectively. Generally low concentrations of CO and NO{sub x} indicate that the combustion was efficient and occurred at low temperatures. Low total nonmethane hydrocarbon concentrations suggest that the volatile components of the petroleum were burned efficiently. 37 refs., 4 figs., 4 tabs.

Luke, W.T.; Kok, G.L.; Schillawski, R.D.; Zimmerman, P.R.; Greenberg, J.P.; Kadavanich, M. [National Center for Atmospheric Research, Boulder, CO (United States)

1992-09-20T23:59:59.000Z

269

Environmental impact of recycling nutrients in human excreta to agriculture compared with enhanced wastewater treatment  

Science Journals Connector (OSTI)

Abstract Human excreta are potential sources of plant nutrients, but are today usually considered a waste to be disposed of. The requirements on wastewater treatment plants (WWTPs) to remove nitrogen and phosphorus are increasing and to meet these requirements, more energy and chemicals are needed by WWTPs. Separating the nutrient-rich wastewater fractions at source and recycling them to agriculture as fertiliser is an alternative to removing them at the WWTP. This study used life cycle assessment methodology to compare the environmental impact of different scenarios for recycling the nutrients in the human excreta as fertiliser to arable land or removing them in an advanced WWTP. Three scenarios were assessed. In blackwater scenario, blackwater was source-separated and used as fertiliser. In urine scenario, the urine fraction was source-separated and used as fertiliser and the faecal water treated in an advanced WWTP. In NP scenario, chemical fertiliser was used as fertiliser and the toilet water treated in an advanced WWTP. The emissions from the WWTP were the same for all scenarios. This was fulfilled by the enhanced reduction in the WWTP fully removing the nutrients from the excreta that were not source-separated in the NP and urine scenarios. Recycling source-separated wastewater fractions as fertilisers in agriculture proved efficient for conserving energy and decreasing global warming potential (GWP). However, the blackwater and urine scenarios had a higher impact on potential eutrophication and potential acidification than the WWTP-chemical fertiliser scenario, due to large impacts by the ammonia emitted from storage and after spreading of the fertilisers. The cadmium input to the arable soil was very small with urine fertiliser. Source separation and recycling of excreta fractions as fertiliser thus has potential for saving energy and decreasing GWP emissions associated with wastewater management. However, for improved sustainability, the emissions from storage and after spreading of these fertilisers must decrease.

J. Spångberg; P. Tidåker; H. Jönsson

2014-01-01T23:59:59.000Z

270

Nutrient removal by grasses irrigated with wastewater and nitrogen balance for reed canarygrass  

SciTech Connect (OSTI)

To develop complementary wastewater treatment systems that increase nutrient reduction and recycling, an experiment was conducted to evaluate the efficiency of three grass species as catch crops for N, P, and K at Aurahammar wastewater treatment plant (WWTP) in the southern part of Sweden. Another objective was also to assess soil accumulation of N, P, and K and the risk of N leaching by drainage. Three grasses--reed canarygrass (Phalaris arundinacea L.), meadow foxtail (Alopecurus pratensis L.), and smooth bromegrass (Bromus inermis Leyss.)--were irrigated with a mixture of treated effluent and supernatant at two levels of intensity [optimum level (equal to evapotranspiration) and over-optimal level] and at two nutrient levels, approximately 150 and 300 kg N ha{sup {minus}1}. There were small differences in dry matter (DM) yield between grass species and no difference in N removal among species. The amount of N removed in harvested biomass to N applied was 0.58 in 1995 and 0.63 in 1996. The amount of N removed increased with increased nutrient load. Applied amounts of P were the same as P in harvested biomass. All species removed K amounts several times greater than applied amounts. Increased nutrient load increased overall K removal. The low amount of mineral N and especially NO{sub 3}{sup {minus}}-N in the soil profile in autumn samplings indicate the risk for leaching is small. Soil water NO{sub 3}{sup {minus}} contents were also low, <2.5 mg NO{sub 3}{sup {minus}}-N L{sup {minus}1} during the growing season, with a mean value of <1 mg NO{sub 3}{sup {minus}}-N L{sup {minus}1}.

Geber, U.

2000-04-01T23:59:59.000Z

271

Comparisons of various nutrient media for the culture of bovine testicular tissues  

E-Print Network [OSTI]

media for tissue culture* These reports have been well summarized in texts on tissue culture ty Parker (62), Cameron (11) and others. Most media are modifications or substitutes for the plasma and embryo juice nutrient liquids first used by Burrows (9... contained no sulfhydryl (SH) groups so that in this respect it supported rather than promoted growth. In the presence of embryonic extract which contained the group, plasma seemed to accelerate the disappearance of the SH as did the embryo extract...

Brown, Murray Allison

2013-10-04T23:59:59.000Z

272

Diet-mixing in a Generalist Herbivore: Trade-offs Between Nutrient and Allelochemical Regulation  

E-Print Network [OSTI]

/or toxins, they can interfere with an insect herbivore’s ability to secure an optimal nutrient mix, including negatively affecting post-ingestive metabolic processes (Broadway and Duffey 1986, Slansky and Wheeler 1992a, b, Simpson and Raubenheimer 2001... content, but generally variation in plants is much great than in animals (Schoonhoven et al. 2005, Clissold et al. 2006, Clissold et al. 2009, Behmer and Joern 2012). For plants, protein-carbohydrate variation exists at a number levels, including...

Le Gall, Marion

2014-05-07T23:59:59.000Z

273

Nutrient pulsing as a regulator of phytoplankton abundance and community composition in Galveston Bay, Texas  

Science Journals Connector (OSTI)

Galveston Bay, Texas, is a large shallow estuary with a watershed that includes 60% of the major industrial facilities of Texas. However, the system exhibits low to moderate (2–20 ?g l?1) microalgal biomass with sporadic phytoplankton blooms. Both nitrogen (N) and phosphate (P) limitation of phytoplankton growth have been proposed for the estuary. However, shifts between N and P limitation of algae growth may occur due to annual fluctuations in nutrient concentrations. The primary goal of this work was to determine the primary limiting nutrient for phytoplankton in Galveston Bay. Nutrient addition bioassays were used to assess short-term (1–2 days) phytoplankton responses (both biomass and community composition) to potentially limiting nutrients. The experimental bioassays were conducted over an annual cycle using natural water collected from the center to lower part of the estuary. Total phytoplankton biomass increased in the nitrate (10 ?M) additions in 11 of the 13 bioassays, but no significant increases were detected in the phosphate (3 ?M)-only additions. Bioassay results suggest that the phytoplankton community was usually not phosphate limited. All major groups increased in biomass following nitrate additions but diatoms increased in biomass at a faster rate than other groups, shifting the community composition toward higher relative abundance of diatoms. The results of this study suggest that pulsed N input events preferentially favor increases in diatom biomass in this estuary. The broader implications of this study are that N pulsing events, primarily due to river discharge, play an important role in structuring the phytoplankton community in the Galveston Bay estuary.

Erla B. Örnólfsdóttir; S.Elizabeth Lumsden; James L. Pinckney

2004-01-01T23:59:59.000Z

274

Pilot-Scale Fermentation and Laboratory Nutrient Studies on Mixed-Acid Fermentation  

E-Print Network [OSTI]

in feed CM chicken manure C/N carbon-nitrogen ratio, g CNA/g N CNA non-acid carbon, g COD chemical oxygen demand CPDM continuum particle distribution model D standard deviation EIA Energy Information Agency Fi bulk fermentation mass in Fermentor i... of the requirements for the degree of DOCTOR OF PHILOSOPHY May 2011 Major Subject: Chemical Engineering PILOT-SCALE FERMENTATION AND LABORATORY NUTRIENT STUDIES ON MIXED-ACID FERMENTATION A Dissertation by AARON DOUGLAS SMITH...

Smith, Aaron Douglas

2011-08-08T23:59:59.000Z

275

Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen and Ingo Wald  

E-Print Network [OSTI]

-2007-001 Scientific Computing and Imaging Institute University of Utah Salt Lake City, UT 84112 USA1 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll, Charles Hansen and Ingo Wald UUSCI. Technical Report No UUSCI-2007-001 Coherent Multiresolution Isosurface Ray Tracing Aaron Knoll Charles

Utah, University of

276

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS  

E-Print Network [OSTI]

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS JULI in the Sobolev trace embedding H1() Lq() in a bounded smooth domain for critical or subcritical q, that is 1 embedding H1 () Lq () for critical or subcritical exponents, 1

Rossi, Julio D.

277

The Measurement of Trace Emissions and Combustion Characteristics for a Mass Fire  

E-Print Network [OSTI]

32 The Measurement of Trace Emissions and Combustion Characteristics for a Mass Fire Ronald A of emissions from biomass burning on global climate. While the burning of biomass constitutes a large fraction of world emis- sions, there are insufficient data on the combustion efficiency, emission factors, and trace

278

Trace metal behaviour in riverine sediments: role of organic matter and sulphides Adeline Charriaua  

E-Print Network [OSTI]

1 Trace metal behaviour in riverine sediments: role of organic matter and sulphides Authors Adeline : 10.1016/j.apgeochem.2010.11.005 #12;2 Abstract Three sediment cores were collected in the Scheldt. The speciation and the distribution of trace metals in pore waters and sediment particles were assessed through

Paris-Sud XI, Université de

279

Solar Energy 74 (2003) 157173 Comparison between ray-tracing simulations and bi-directional  

E-Print Network [OSTI]

Solar Energy 74 (2003) 157­173 Comparison between ray-tracing simulations and bi-Louis Scartezzini a Solar Energy and Building Physics Laboratory LESO-PB, Swiss Federal Institute of Technology EPFL-tracing software. For the first time, an attempt is made to validate detailed bi-directional properties

280

Bunker: A Privacy-Oriented Platform for Network Tracing Andrew G. Miklas  

E-Print Network [OSTI]

Bunker: A Privacy-Oriented Platform for Network Tracing Andrew G. Miklas , Stefan Saroiu , Alec processing and anony- mization must be performed at line speed. This paper presents Bunker, a network tracing benefits of online anonymization. Bunker uses virtualization, encryption, and restricted I/O interfaces

Hunt, Galen

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

RATS: restoration-aware trace signal selection for post-silicon validation  

Science Journals Connector (OSTI)

Post-silicon validation is one of the most important and expensive tasks in modern integrated circuit design methodology. The primary problem governing post-silicon validation is the limited observability due to storage of a small number of signals in ... Keywords: post-silicon validation, restoration, trace buffer, trace signals

Kanad Basu; Prabhat Mishra

2013-04-01T23:59:59.000Z

282

White-light flares: A TRACE/RHESSI overview H. S. Hudson  

E-Print Network [OSTI]

White-light flares: A TRACE/RHESSI overview H. S. Hudson Space Sciences Laboratory, University includes a "white light" imaging capability with novel characteristics. Many flares with such white. The spectral response of the TRACE white-light passband extends into the UV, so these data capture

Hudson, Hugh

283

Gas Source Tracing With a Mobile Robot Using an Adapted Moth Strategy  

E-Print Network [OSTI]

Gas Source Tracing With a Mobile Robot Using an Adapted Moth Strategy Achim Lilienthal, Denis,reiman,zell}@informatik.uni-tuebingen.de Abstract. As a sub-task of the general gas source localisation problem, gas source tracing is supposed to guide a gas-sensitive mobile system towards a source by using the cues determined from the gas

Zell, Andreas

284

LaserSPECks:: laser SPECtroscopic trace-gas sensor networks - sensor integration and applications  

Science Journals Connector (OSTI)

We introduce a novel laser spectroscopic trace-gas sensor platform, LaserSPECks that integrates recently developed miniature quartz-enhanced photoacoustic spectroscopy (QE-PAS) gas sensing technology. This universal platform uses infrared laser spectroscopy ... Keywords: lasers, sensors, spectroscopy, trace gas sensing

Stephen So; Farinaz Koushanfar; Anatoliy Kosterev; Frank Tittel

2007-04-01T23:59:59.000Z

285

Dynamics of sediment resuspension and the conceptual schema of nutrient release in the large shallow Lake Taihu, China  

Science Journals Connector (OSTI)

On the basis of investigationsin situ..., it was found that mass exchange on the water-sediment interface occurred chiefly on the superficial sediment within 5–10 cm. The spatial physicochemical character of sedi...

Boqiang Qin; Weiping Hu; Guang Gao; Liancong Luo; Jinshan Zhang

2004-01-01T23:59:59.000Z

286

Temporal dynamics of nutrient and carbohydrate distribution during crop cycles of Rosa spp. `Kardinal' in response to light availability  

E-Print Network [OSTI]

. `Kardinal' in response to light availability Neil S. Mattson a, *, J. Heinrich Lieth b , Wan-Soon Kim c a Department of Horticulture, Plant Science Building, Cornell University, Ithaca, NY 14853, USA b Department the lag phase (Friend et al., 1994). A similar phenomenon occurs in greenhouse cut flower roses (Rosa spp

Lieth, J. Heinrich

287

Money, Banking and Dynamics: Two Wicksellian routes from Mises to Hayek and Schumpeter  

E-Print Network [OSTI]

Money, Banking and Dynamics: Two Wicksellian routes from Mises to Hayek and Schumpeter By AGNÃ?S be traced back to Wicksell, going from Mises whose Theory of Money and Credit provides, as we shall see theories of business cycles. In this connection, Mises' Theory of Money and Credit and, in particular, his

Paris-Sud XI, Université de

288

Select Nutrients, Secreted Phosphoprotein 1 and Insulin-Like Growth Factor 2: Effects of Trophectoderm of Ovine Conceptuses  

E-Print Network [OSTI]

of pregnancy. Among them, several components of histotroph including nutrients, cell matrix proteins and growth factors may activate mTOR (mammalian target of rapamycin; also known as FRAP1) to stimulate hypertrophy, hyperplasia, and/or migration of conceptus...

Kim, Jin Young

2011-08-08T23:59:59.000Z

289

Phosphorus and Other Nutrient Disappearance from Plants Containing Condensed Tannins Using In Situ and Mobile Nylon Bag Techniques  

E-Print Network [OSTI]

evaluated using the mobile nylon bag technique. For the second experiment, ruminal degradation parameters, ruminal and post-ruminal disappearance of P and other nutrients from a browse containing CT (Quercus virginiana) were compared to species without CT...

Pagan Riestra, Suzika

2011-02-22T23:59:59.000Z

290

Annual productivity of Spirulina (Arthrospira) and nutrient removal in a pig wastewater recycling process under tropical conditions  

Science Journals Connector (OSTI)

An evaluation was made of the annual productivity of Spirulina (Arthrospira) and its ability to remove nutrients in outdoor raceways treating anaerobic effluents from pig wastewater under tropical conditions. The...

Eugenia J. Olguín; Sonia Galicia; Gabriel Mercado…

2003-03-01T23:59:59.000Z

291

Enhanced biodegradation of diesel fuel through the addition of particulate organic carbon and inorganic nutrients in coastal marine waters  

Science Journals Connector (OSTI)

Diesel fuel pollution in coastal waters, resulting from recreational ... operations, is common and can adversely affect marine biota. The purpose of this study was...Spartina alterniflora...), inorganic nutrients...

Michael F. Piehler; Hans W. Paerl

1996-06-01T23:59:59.000Z

292

Rates of Species Accumulation and Taxonomic Diversification during Phototrophic Biofilm Development Are Controlled by both Nutrient Supply and Current Velocity  

Science Journals Connector (OSTI)

...2002. Taxonomic richness of stream benthic algae: effects of flood disturbance and nutrients. Limnol. Oceanogr. 47 :1175-1186...171-178. 40. Sousa, W . 1979. Disturbance in marine intertidal boulder fields: the nonequilibrium maintenance of species diversity...

Chad A. Larson; Sophia I. Passy

2013-01-18T23:59:59.000Z

293

Effects of Varying Nutrient Profiles and Enzyme Supplementation in Broiler Diets on Growth Performance and Energy Digestibility  

E-Print Network [OSTI]

The current research program was designed to evaluate the impact of various dietary and ingredient nutrient profiles and exogenous enzyme inclusion on growth performance and energy utilization in broilers. Experiment one was designed to observe...

Campasino, Ashley Marie 1989-

2012-11-16T23:59:59.000Z

294

T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site  

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

0: Blue Coat Director HTTP Trace Processing Flaw Permits 0: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks T-720: Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks September 19, 2011 - 8:45am Addthis PROBLEM Blue Coat Director HTTP Trace Processing Flaw Permits Cross-Site Scripting Attacks. PLATFORM: All versions of Director prior to 5.5.2.3 are vulnerable. ABSTRACT: A vulnerability was reported in Blue Coat Director. A remote user can conduct cross-site scripting attacks. reference LINKS: Blue Coat Advisories ID: SA62 SecurityTracker Alert ID: 1026061 Blue Coat Director 510 Blue Coat SGME 5 IMPACT ASSESSMENT: Medium Discussion: An attacker can use the HTTP TRACE method to echo malicious script back to the client as part of a Cross Site Scripting (XSS) attack. No

295

V-011: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets  

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

1: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support 1: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets Remote Users Obtain Potentially Sensitive Information V-011: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets Remote Users Obtain Potentially Sensitive Information October 26, 2012 - 6:00am Addthis PROBLEM: IBM Tivoli Monitoring Web Server HTTP TRACE/TRACK Support Lets Remote Users Obtain Potentially Sensitive Information PLATFORM: Software version: 6.2.3, 6.2.3.1 ABSTRACT: A vulnerability was reported in IBM Tivoli Monitoring. REFERENCE LINKS: IBM Support Document: 1614003 IBM Support Portal SecurityTracker Alert ID: 1027692 IMPACT ASSESSMENT: High DISCUSSION: A remote user may be able to conduct HTTP TRACE and HTTP TRACK attacks to access sensitive information from the HTTP headers.

296

Tool for Rapid Assessment of City Energy (TRACE) | Open Energy Information  

Open Energy Info (EERE)

Tool for Rapid Assessment of City Energy (TRACE) Tool for Rapid Assessment of City Energy (TRACE) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Tool for Rapid Assessment of City Energy (TRACE) Agency/Company /Organization: Energy Sector Management Assistance Program of the World Bank Sector: Climate Focus Area: Renewable Energy, Buildings, Energy Efficiency Topics: Low emission development planning, Pathways analysis Resource Type: Training materials, Software/modeling tools User Interface: Website Website: esmap.org/esmap/TRACE Cost: Free Equivalent URI: cleanenergysolutions.org/content/tool-rapid-assessment-city-energy-tra Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance References: TRACE[1] This tool offers cities a quick and easy way to assess their energy

297

Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh,  

Open Energy Info (EERE)

Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh, Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Walker-Lane Transitional Zone Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

298

Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010)  

Open Energy Info (EERE)

Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Nw Basin & Range Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Northwest Basin and Range Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

299

Symbolic dynamics  

E-Print Network [OSTI]

This chapter presents some of the links between automata theory and symbolic dynamics. The emphasis is on two particular points. The first one is the interplay between some particular classes of automata, such as local automata and results on embeddings of shifts of finite type. The second one is the connection between syntactic semigroups and the classification of sofic shifts up to conjugacy.

Béal, M -P; Eilers, S; Perrin, D

2010-01-01T23:59:59.000Z

300

An evaluation of trace element release associated with acid mine drainage  

SciTech Connect (OSTI)

The determination of trace element release from geologic materials, such as oil shale and coal overburden, is important for proper solid waste management planning. The objective of this study was to determine a correlation between release using the following methods: (1) sequential selective dissolution for determining trace element residencies, (2) toxicity characteristic leaching procedure (TCLP), and (3) humidity cell weathering study simulating maximum trace element release. Two eastern oil shales were used, a New Albany shale that contains 4.6 percent pyrite, and a Chattanooga shale that contains 1.5 percent pyrite. Each shale was analyzed for elemental concentrations by soluble, adsorbed, organic, carbonate, and sulfide phases. The results of the results of the selective dissolution studies show that each trace element has a unique distribution between the various phases. Thus, it is possible to predict trace element release based on trace element residency. The TCLP results show that this method is suitable for assessing soluble trace element release but does not realistically assess potential hazards. The results of the humidity cell studies do demonstrate a more reasonable method for predicting trace element release and potential water quality hazards. The humidity cell methods, however, require months to obtain the required data with a large number of analytical measurements. When the selective dissolution data are compared to the trace element concentrations in the TCLP and humidity cell leachates, it is shown that leachate concentrations are predicted by the selective dissolution data. Therefore, selective dissolution may represent a rapid method to assess trace element release associated with acid mine drainage.

Sullivan, P.J.; Yelton, J.L. (Univ. of Wyoming Research Corp., Laramie (United States))

1988-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Effect of Socioeconomic and Demographic Factors on Away-From-Home and At-Home Consumption on selected Nutrients.  

E-Print Network [OSTI]

patterns not only from total food consumption but also from FAFH and FAH. The data used in this study is the Individual Intake phase of the 1987-88 National Food Consumption Survey of the United States Department of Agriculture. The information derived... such nutrients as fats and cholesterol (Borra, 1988). How ever, the shift in emphasis of nutrition policy toward more concern about overconsumption of certain food constituents does not mean less concern about adequate intake of essential nutrients (Windham...

Nayga, Rodolfo M. Jr; Capps, Oral Jr

1994-01-01T23:59:59.000Z

302

Estimation of aboveground biomass and inorganic nutrient content of a 25-year-old loblolly pine (Pinus taeda L.) plantation  

E-Print Network [OSTI]

ESTIMATION OF ABOVEGROUND BIOMASS AND INORGANIC NUTRIENT CONTENT OF A 25-YEAR-OLD LOBLOLLY PINE (PINUS TAEDA L. ) PLANTATION A Thesis by JAMES NELSON MOUSER Submitted to the Graduate College of Texas ARM University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE August lqBO Major Si bject: Forestry ESTIMATION OF ABOVEGROUND BIOMASS AND INORGANIC NUTRIENT CONTENT OF A 25-YEAR-OLD LOBLOLLY PINE (PINUS TAEDA L. ) PLANTATION A Thesis by JAMES NELSON HOUSER Approved...

Houser, James Nelson

1980-01-01T23:59:59.000Z

303

Nutrient content variation in wood and foliage of slash pine (Pinus elliottii Engelm.) with season and soil series  

E-Print Network [OSTI]

NUTRIENT. CONTENT VARIATION IN WOOD AND FOLIAGE OF SLASH PINE (PINUS ELLIOTTII ENGELN. ) WITH SEASON AND SOIL SERIES A Thesis by RONALD HOWARD BLACKWELDER Submitted to the Graduate College of Texas AKJ&l University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE Decenber 1977 Najor Subject: Forestry NUTRIENT CONTENT VARIATION IN WOOD AND FOLIAGE OF SLASH PINE (PINUS ELLIOTTI ENGELM. ) WITH SEASON AND SOIL SERIES A Thesis by RONAL D HOWARD BL AC KWE L DE R...

Blackwelder, Ronald Howard

1977-01-01T23:59:59.000Z

304

Spatiotemporal focusing dynamics in plasmas at X-ray wavelength  

SciTech Connect (OSTI)

Using a finite curvature beam, we investigate here the spatiotemporal focusing dynamics of a laser pulse in plasmas at X-ray wavelength. We trace the dependence of curvature parameter on the focusing of laser pulse and recognize that the self-focusing in plasma is more intense for the X-ray laser pulse with curved wavefront than with flat wavefront. The simulation results demonstrate that spatiotemporal focusing dynamics in plasmas can be controlled with the appropriate choice of beam-plasma parameters to explore the high intensity effects in X-ray regime.

Sharma, A., E-mail: a-physics2001@yahoo.com; Tibai, Z. [Institute of Physics, University of Pecs, Pecs–7624 (Hungary)] [Institute of Physics, University of Pecs, Pecs–7624 (Hungary); Hebling, J. [Institute of Physics, University of Pecs, Pecs–7624 (Hungary) [Institute of Physics, University of Pecs, Pecs–7624 (Hungary); Szentagothai Research Centre, University of Pecs, Pecs-7624 (Hungary); Mishra, S. K. [Institute for Plasma Research, Gandhinagar (India)] [Institute for Plasma Research, Gandhinagar (India)

2014-03-15T23:59:59.000Z

305

Chemical structure and dynamics: Annual report 1996  

SciTech Connect (OSTI)

The Chemical Structure and Dynamics (CS&D) program is a major component of the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL) developed by Pacific Northwest National Laboratory (PNNL) to provide a state-of-the-art collaborative facility for studies of chemical structure and dynamics. We respond to the need for a fundamental, molecular-level understanding of chemistry at a wide variety of environmentally important interfaces by (1) extending the experimental characterization and theoretical description of chemical reactions to encompass the effects of condensed media and interfaces; (2) developing a multidisciplinary capability for describing interfacial chemical processes within which the new knowledge generated can be brought to bear on complex phenomena in environmental chemistry and in nuclear waste processing and storage; and (3) developing state-of-the-art analytical methods for characterizing waste tanks and pollutant distributions, and for detecting and monitoring trace atmospheric species.

Colson, S.D.; McDowell, R.S.

1997-03-01T23:59:59.000Z

306

Chemical structure and dynamics. Annual report 1995  

SciTech Connect (OSTI)

The Chemical Structure and Dynamics program is a major component of Pacific Northwest National Laboratory`s Environmental Molecular Sciences Laboratory (EMSL), providing a state-of-the-art collaborative facility for studies of chemical structure and dynamics. We respond to the need for a fundamental, molecular-level understanding of chemistry at a wide variety of environmentally important interfaces by (1) extending the experimental characterization and theoretical description of chemical reactions to encompass the effects of condensed media and interfaces; (2) developing a multidisciplinary capability for describing interfacial chemical processes within which the new knowledge generated can be brought to bear on complex phenomena in environmental chemistry and in nuclear waste processing and storage; and (3) developing state-of-the-art analytical methods for the characterization of waste tanks and pollutant distributions, and for detection and monitoring of trace atmospheric species.

Colson, S.D.; McDowell, R.S.

1996-05-01T23:59:59.000Z

307

Variations of the Isotopic Ratios of Uranium in Environmental Samples Containing Traces of Depleted Uranium: Theoretical and Experimental Aspects  

Science Journals Connector (OSTI)

......Samples Containing Traces of Depleted Uranium: Theoretical and Experimental...for the detection of traces of depleted uranium (DU) in environmental samples...percentage composition is about 20% depleted uranium and 80% natural uranium, for......

M. Magnoni; S. Bertino; B. Bellotto; M. Campi

2001-12-01T23:59:59.000Z

308

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS  

SciTech Connect (OSTI)

Determination of Method Detection Limits for Trace 232-Thorium and 238-Uranium in Copper using Ion Exchange and ICPMS

Hoppe, Eric W.; LaFerriere, Brian D.; Maiti, Tapas C.; Soin, Aleksandr

2014-04-15T23:59:59.000Z

309

Trace element behavior in the fluidized bed gasification of solid recovered fuels – A thermodynamic study  

Science Journals Connector (OSTI)

Gasification of biomass and recycled fuels is of particular interest for the efficient production of power and heat. Trace elements present as impurities in the product gas should be removed very efficiently. The objective of this work has been to develop and test thermodynamic models for the reactions of trace elements with chlorine and sulfur in the gasification processes of recycled fuels. In particular, the chemical reactions of trace elements with main thermochemical conversion products, main ash components, and bed and sorbent material are implemented into the model. The possibilities of gas cleaning devices in condensing and removing the trace element compounds are studied by establishing the volatilization tendency of trace element compounds in reducing gases. The results obtained with the model are compared with the measured data of trace elements of gasification experiments using solid recovered fuel as feedstock. Some corresponding studies in the literature are also critically reviewed and compared. The observed discrepancies may be attributed to differences in thermodynamic databases applied and experimental arrangements. The method of removing gaseous trace elements by condensation is already in use in the 160 MWth waste gasification plant in Lahti, Finland.

Jukka Konttinen; Rainer Backman; M. Hupa; Antero Moilanen; Esa Kurkela

2013-01-01T23:59:59.000Z

310

Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies in the upwelling center off Concepcin, Chile (36S)  

E-Print Network [OSTI]

Evaluation of sediment trace metal records as paleoproductivity and paleoxygenation proxies the records of several trace metals sensitive to redox conditions in continental shelf sediments off ). The goals of this study were to determine the input of trace metals to the sediment and to decipher how

Demouchy, Sylvie

311

RAPID 3D TRACING OF THE MOUSE BRAIN NEUROVASCULATURE WITH LOCAL MAXIMUM INTENSITY PROJECTION AND MOVING WINDOWS  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 1. 3D Frangi vs. 2D Frangi with MIP cube . . . . . . . . 49 a. Synthetic data tracing result . . . . . . . . . . . . 49 b. Performance comparison . . . . . . . . . . . . . . 50 c. Validation . . . . . . . . . . . . . . . . . . . . . . 51 2. MW... with MIP cube . . . . . . . . . . . . . . . . . . . 53 a. Synthetic data tracing result . . . . . . . . . . . . 53 b. Performance comparison . . . . . . . . . . . . . . 54 c. Validation . . . . . . . . . . . . . . . . . . . . . . 54 3. Tracing in low...

Han, Dong Hyeop

2011-10-21T23:59:59.000Z

312

Sediment Dynamics and the Hydromorphology of Fluvial Systems (Proceedings of a symposium held in Dundee, UK, July 2006). IAHS Publ. 306, 2006. 1  

E-Print Network [OSTI]

Sediment Dynamics and the Hydromorphology of Fluvial Systems (Proceedings of a symposium held in Dundee, UK, July 2006). IAHS Publ. 306, 2006. 1 Pacific salmon and sediment flocculation: nutrient, UK Abstract Salmon derived sediment flocs form during post-spawning die-off when organic matter from

Northern British Columbia, University of

313

Introduction Dynamic Risk Measures  

E-Print Network [OSTI]

Introduction Dynamic Risk Measures Dynamic Risk Measures from BMO martingales Bid-Ask Dynamic Pricing Procedure Conclusion MESURES DE RISQUE DYNAMIQUES DYNAMIC RISK MEASURES Jocelyne Bion-Nadal CNRS Risk Measures Dynamic Risk Measures from BMO martingales Bid-Ask Dynamic Pricing Procedure Conclusion

Bion-Nadal, Jocelyne

314

Field Investigation of Nutrient Pulse Mixing in an in Situ Biostimulation Experiment  

E-Print Network [OSTI]

- dispersion equation. Data collected during wall flushing were 2872 DEVLIN AND BARKER: NUTRIENT PULSE MIXING fit to the Ogata-Banks olution [Ogata and Banks, 1961]; data from the 1-m fence were fit to equation (1) below (adapted from Sudicky and Cherry.... $oc. Civ. Eng., 104(HY1), 75-85, 1978. Kinzelbach, W., Groundwater Modelling, An Introduction With Sample Programs in BASIC, 333 pp., Dev. Water $ci., vol. 25, Elsevier, New York, 1987. MacFarlane, D. S., J. A. Cherry, R. W. Gillham, and E. A...

Devlin, J. F.

1996-04-01T23:59:59.000Z

315

Dynamic Positioning Simulator Dynamic Positioning Simulator  

E-Print Network [OSTI]

Simulator 5 / 24 #12;Dynamic Positioning Simulator Dynamic Positioning Why Dynamic Positioning? Advantages Dynamic Positioning: No tugboats needed; Offshore set-up is quick; Power saving; Precision situations more on Ship: Wind Force Fw = 1 2 air V 2 rw CXw (rw )AT 1 2 air V 2 rw CYw (rw )AL Mw = 1 2 air V 2 rw CMw (rw

Vuik, Kees

316

E-Print Network 3.0 - area process ponds Sample Search Results  

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

Ecology 7 Tracing anthropogenic nutrient inputs into coastal plain ponds on an urban-rural gradient: a study using stable Summary: Tracing anthropogenic nutrient inputs into...

317

Smoothing of respiratory motion traces for motion-compensated radiotherapy  

SciTech Connect (OSTI)

Purpose: The CyberKnife system has been used successfully for several years to radiosurgically treat tumors without the need for stereotactic fixation or sedation of the patient. It has been shown that tumor motion in the lung, liver, and pancreas can be tracked with acceptable accuracy and repeatability. However, highly precise targeting for tumors in the lower abdomen, especially for tumors which exhibit strong motion, remains problematic. Reasons for this are manifold, like the slow tracking system operating at 26.5 Hz, and using the signal from the tracking camera ''as is''. Since the motion recorded with the camera is used to compensate for system latency by prediction and the predicted signal is subsequently used to infer the tumor position from a correlation model based on x-ray imaging of gold fiducials around the tumor, camera noise directly influences the targeting accuracy. The goal of this work is to establish the suitability of a new smoothing method for respiratory motion traces used in motion-compensated radiotherapy. The authors endeavor to show that better prediction--With a lower rms error of the predicted signal--and/or smoother prediction is possible using this method. Methods: The authors evaluated six commercially available tracking systems (NDI Aurora, PolarisClassic, Polaris Vicra, MicronTracker2 H40, FP5000, and accuTrack compact). The authors first tracked markers both stationary and while in motion to establish the systems' noise characteristics. Then the authors applied a smoothing method based on the a trous wavelet decomposition to reduce the devices' noise level. Additionally, the smoothed signal of the moving target and a motion trace from actual human respiratory motion were subjected to prediction using the MULIN and the nLMS{sub 2} algorithms. Results: The authors established that the noise distribution for a static target is Gaussian and that when the probe is moved such as to mimic human respiration, it remains Gaussian with the exception of the FP5000 and the Aurora systems. The authors also showed that the proposed smoothing method can indeed be used to filter noise. The signal's jitter dropped by as much as 95% depending on the tracking system employed. Subsequently, the 3D prediction error (rms) for a prediction horizon of 150 ms on a synthetic signal dropped by up to 37% when using a normalized LMS prediction algorithm (nLMS{sub 2}) and hardly changed when using a MULIN algorithm. When smoothing a real signal obtained in our laboratory, the improvement of prediction was similar: Up to 30% for both the nLMS{sub 2} and the best MULIN algorithm. The authors also found a noticeable increase in smoothness of the predicted signal, the relative jitter dropped by up to 95% on the real signal, and on the simulated signal. Conclusions: In conclusion, the authors can say that preprocessing of marker data is very useful in motion-compensated radiotherapy since the quality of prediction increases. This will result in better performance of the correlation model. As a side effect, since the prediction of a preprocessed signal is also less noisy, the authors expect less robot vibration resulting in better targeting accuracy and less strain on the robot gears.

Ernst, Floris; Schlaefer, Alexander; Schweikard, Achim [Institute for Robotics and Cognitive Systems, University of Luebeck, Ratzeburger Allee 160, Luebeck SH 23538 (Germany)

2010-01-15T23:59:59.000Z

318

Hydrogen and helium traces in type Ib-c supernovae  

E-Print Network [OSTI]

The spectroscopic properties of a selected optical photospheric spectra of core collapse supernovae (CCSNe) are investigated.Special attention is devoted to traces of hydrogen at early phases. The generated spectra are found to match the observed ones reasonably well, including a list of only 23 candidate ions. Guided by SN Ib 1990I, the observed trough near 6300\\AA is attributed to H$\\alpha$ in almost all Type Ib events, although in some objects it becomes too weak to be discernible, especially at later phases. Alternative line identifications are discussed. Differences in the way hydrogen manifests its presence within CCSNe are highlighted. In Type Ib SNe, the H$\\alpha$ contrast velocity (i.e. line velocity minus the photospheric velocity) seems to increase with time at early epochs, reaching values as high as 8000 km s$^{-1}$ around 15-20 days after maximum and then remains almost constant. The derived photospheric velocities, indicate a lower velocity for Type II SNe 1987A and 1999em as compared to SN Ic 1994I and SN IIb 1993J, while Type Ib events display a somewhat larger variation. The scatter, around day 20, is measured to be $\\sim$5000 km s$^{-1}$. Following two simple approaches, rough estimates of ejecta and hydrogen masses are given. A mass of hydrogen of approximately 0.02 $M_\\odot$ is obtained for SN 1990I, while SNe 1983N and 2000H ejected $\\sim$0.008 $M_\\odot$ and $\\sim$0.08 $M_\\odot$ of hydrogen, respectively. SN 1993J has a higher hydrogen mass, $\\sim 0.7$ $M_\\odot$ with a large uncertainty. A low mass and thin hydrogen layer with very high ejection velocities above the helium shell, is thus the most likely scenario for Type Ib SNe. Some interesting and curious issues relating to oxygen lines suggest future investigations.

A. Elmhamdi; I. J. Danziger; D. Branch; B. Leibundgut; E. Baron; R. P. Kirshner

2006-04-04T23:59:59.000Z

319

Characterization of the Kootenai River Aquatic Macroinvertebrate Community before and after Experimental Nutrient Addition, 2003-2006. [Chapter 3  

SciTech Connect (OSTI)

The Kootenai River ecosystem has experienced numerous ecological changes since the early 1900s. Some of the largest impacts to habitat, biological communities, and ecological function resulted from levee construction along the 120 km of river upstream from Kootenay Lake, completed by the 1950s, and the construction and operation of Libby Dam, completed in 1972 on the river near Libby Montana. Levee construction isolated tens of thousands of hectares of historic functioning floodplain habitat from the river channel, eliminating nutrient production and habitat diversity crucial to the functioning of a large river-floodplain ecosystem. Libby Dam continues to create large changes in the timing, duration, and magnitude of river flows, and greatly reduces sediment and nutrient transport to downstream river reaches. These changes have contributed to the ecological collapse of the post-development Kootenai River ecosystem and its native biological communities. In response to this artificial loss of nutrients, experimental nutrient addition was initiated in the Kootenay Lake's North Arm in 1992, the South Arm in 2004, and in the Kootenai River at the Idaho-Montana border during 2005. This report characterizes the macroinvertebrate community in the Kootenai River and its response to experimental nutrient addition during 2005 and 2006. This report also provides an initial evaluation of cascading trophic interactions in response to nutrient addition. Macroinvertebrates were sampled at 12 sites along a 325 km section of the Kootenai River, representing an upriver unimpounded reference reach, treatment and control canyon reach sites, and braided and meandering reach sites, all downstream from Libby Dam. Principle component analysis revealed that richness explained the greatest amount of variability in response to nutrient addition as did taxa from Acari, Coleoptera, Ephemeroptera, Plecoptera, and Trichoptera. Analysis of variance revealed that nutrient addition had a significant effect (p<0.0001) on invertebrate abundance, biomass, and richness at sites KR-9 and KR-9.1 combined (the zone of maximum biological response). Richness, a valuable ecological metric, increased more than abundance and biomass, which were subject to greater sampling bias. Cascading trophic interactions were observed as increased algal accrual, increased in-river invertebrate abundance, and increased invertebrate counts in mountain whitefish (Prosopium williamsonii) guts samples, but were not quantitatively tested. Sampling and analyses across trophic levels are currently ongoing and are expected to better characterize ecological responses to experimental nutrient addition in the Kootenai River.

Holderman, Charlie [Kootenai Tribe of Idaho Bonners

2009-02-19T23:59:59.000Z

320

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot  

Open Energy Info (EERE)

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Details Activities (3) Areas (1) Regions (0) Abstract: Chemical interaction of thermal fluids with reservoir rock in the Roosevelt Hot Springs thermal area, Utah, has resulted in the development of characteristic trace-element dispersion patterns. Multielement analyses of surface rock samples, soil samples and drill cuttings from deep exploration wells provide a three-dimensional perspective of chemical redistribution within this structurally-controlled hot-water geothermal system. Five distinctive elemental suites of chemical enrichment are

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area,  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area, Utah Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Trace Element Geochemical Zoning in the Roosevelt Hot Springs Thermal Area, Utah Abstract Chemical interaction of thermal brines with reservoir rock in the Roosevelt Hot Springs thermal area has resulted in the development of distinctive trace element signatures. Geochemical analysis of soil sample, shallow temperature gradient drill hole cuttings and deep drill hole cutting provides a three dimensional perspective of trace element distributions within the system. Distributions of As, Hg and Li provide the clearest expression of hydrothermal activity. Comparison of these distribution

322

Atom Trap Trace Analysis at ANL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Atom Trap Trace Analysis at ANL Atom Trap Trace Analysis at ANL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Atom Trap Trace Analysis at ANL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Atom Trap Trace Analysis (ATTA) to determine isotopic abundances. Developed at: Argonne National Laboratory Developed in: 1999-current

323

Interactive Isosurface Ray Tracing of Large Octree Aaron Knoll, Ingo Wald, Steven Parker, and Charles Hansen  

E-Print Network [OSTI]

, and Charles Hansen UUSCI-2006-026 Scientific Computing and Imaging Institute University of Utah Salt Lake City-026 Interactive Isosurface Ray Tracing of Large Octree Volumes Aaron Knoll Ingo Wald Steven Parker Charles Hansen

Utah, University of

324

Trace metal contamination of waters, sediments, and organisms of the Swan Lake area of Galveston Bay  

E-Print Network [OSTI]

facility (Gulf Coast Waste Disposal Authority) is located north of the Wah Chang Ditch. Consequently there have been concerns about possible metal contamination in this area. I determined trace metal concentrations in water, sediments, and organisms (oyster...

Park, Junesoo

1995-01-01T23:59:59.000Z

325

Experimental studies on the bioaccumulation and bioavailability of colloidally-bound trace metals to penaeid shrimp  

E-Print Network [OSTI]

Trace metals in estuarine systems frequently exist as colloid-ion complexes and the chemical characteristics of these complexes may alter their bioavailability. The relative hydrophobicity of the colloid-ion complex could influence bio-uptake across...

Carvalho, Roberta Anne

1996-01-01T23:59:59.000Z

326

3D-printed miniature gas cell for photoacoustic spectroscopy of trace gases  

Science Journals Connector (OSTI)

A new methodology for the development of miniature photoacoustic trace gas sensors using 3D printing is presented. A near-infrared distributed feedback (DFB) laser is used together...

Bauer, Ralf; Stewart, George; Johnstone, Walter; Boyd, Euan; Lengden, Michael

2014-01-01T23:59:59.000Z

327

Trace element mineral transformations associated with hydration and recarbonation of retorted oil shale  

Science Journals Connector (OSTI)

A laboratory study was conducted to evaluate the influence of hydration and recarbonation on the solidphase distribution of trace elements in retorted oil shale. The oil shale samples were retorted by the Paraho ...

M. E. Essington

328

Laser-based trace gas detection with applications in biology and medical science  

Science Journals Connector (OSTI)

OPOs and QC-lasers in combination with off-axis ICOS are used to detect trace gases emitted from biological tissue. Ethylene and Nitric oxide emission are detected from plants and HCN...

Harren, Frans J M

329

E-Print Network 3.0 - aristotelis trace elements Sample Search...  

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

results for: aristotelis trace elements Page: << < 1 2 3 4 5 > >> 1 Examen LA207 Matlab: applications en mecanique Summary: en imposant la vue de dessus avec la fonction...

330

E-Print Network 3.0 - airbone trace metals Sample Search Results  

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

and Loss of Heavy Metals from Experimental Salt Marsh Plots Summary: L of 12 M trace metal grade hydrochloric acid (HCl) and reheated the samples to 65-80 C in a water bath......

331

08ICES-0031 Advanced quartz-enhanced photoacoustic trace gas sensor for  

E-Print Network [OSTI]

08ICES-0031 Advanced quartz-enhanced photoacoustic trace gas sensor for early fire detection A. A, overheating of electric wiring insulation, unintended release of chemicals, or malfunctions of the air

332

Recent progress in high precision atmospheric trace gas instruments using mid-infrared quantum cascade lasers  

Science Journals Connector (OSTI)

We report results from high precision spectroscopic instruments for atmospheric trace gases using with mid-IR quantum cascade lasers. Numerous gases can be measured with 1s absorption...

McManus, John B; Zahniser, Mark; Nelson, David; McGovern, Ryan; Agnese, Mike

333

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.6  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.6 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

334

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.5  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.5 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

335

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.9  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.9 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

336

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.8  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.8 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

337

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.7  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.7 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

338

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.1.0  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.1.1.0 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

339

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.2.4  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.2.4 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

340

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.2  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.1.2 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Building Technologies Program: Tax Deduction Qualified Software- TRACE 700 version 6.1.0.0  

Broader source: Energy.gov [DOE]

Provides required documentation that TRACE 700 version 6.1.0.0 meets Internal Revenue Code §179D, Notice 2006-52, dated June 2, 2006, for calculating commercial building energy and power cost savings.

342

RAPID COMMUNICATION CW DFB RT diode laser-based sensor for trace-gas detection  

E-Print Network [OSTI]

wave thermoelectrically cooled, distributed feedback diode laser will be described. The CW TEC DFB- moelectrically cooled (TEC), distributed feedback diode laser-based spectroscopic trace-gas sensor for ultra tunable diode laser absorption spectroscopy (TDLAS) and wavelength modulation spectroscopy

343

Ray-tracing for coordinate knowledge in the JWST Integrated Science Instrument Module  

Science Journals Connector (OSTI)

We describe the matrix/vector ray tracing methods used to maintain pupil and image position knowledge in the James Webb Space Telescope Optical Telescope Element Simulator. These prove...

Sabatke, Derek S

344

Statistical analysis of aerosol species, trace gasses, and meteorology in Chicago  

E-Print Network [OSTI]

possible pollutant sources. Keywords Atmospheric aerosols . Canonical correlation analysis . Chicago air pollution studies involve collection and anal- ysis of atmospheric aerosols and concurrent meteorol- ogy) and principal component analysis (PCA) were applied to atmospheric aerosol and trace gas concentrations

O'Brien, Timothy E.

345

Printing 3D Electrical Traces in Additive Manufactured Parts via Low Melting Temperature  

E-Print Network [OSTI]

Printing 3D Electrical Traces in Additive Manufactured Parts via Low where commercial Additive Manufacturing (AM) techniques can be used to concurrently construct quality and robustness of systems produced using additive manufacturing (AM) techniques is beginning

Dollar, Aaron M.

346

Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) |  

Open Energy Info (EERE)

Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Socorro Mountain Area (Owens, Et Al., 2005) Exploration Activity Details Location Socorro Mountain Area Exploration Technique Trace Element Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes In order to determine which of the faults in these regions were active and open to hydrothermal fluid circulation, we have employed selective ion geochemistry that is a new geochemical method capable of detecting anomalous concentrations for up to 47 elements transported to soils by geochemical cells or low pressure vapors. Enzyme leach and Terrasol leach are two such techniques. This method has to datae been mostly applied to

347

Trace fossils and depositional environment of four clastic units, Upper Pennsylvanian megacyclothems, northeast Kansas  

E-Print Network [OSTI]

Purpose 6 Acknowledgments 6 PREVIOUS WORK 6 PALLOGEOGRAPHIC SETTING 8 STRATIGRAPIIIC DESCRIPTIONS 8 Rock Lake Shale and South Bend Limestone 8 Stull Shale Member 10 Tecumseh Shale 11 DISCUSSION 12 Bathymetry of trace fossils... 12 Cyclothems 13 Absence of body fossils 13 Distribution of trace fossils 14 PAGE INTERPRETATION 16 Rock Lake Shale and South Bend Limestone Members 16 Stull Shale Member 17 Tecumseh Shale 18 CONCLUSIONS 19 PALEONTOLOGIC...

Hakes, W. G.

1976-04-29T23:59:59.000Z

348

Storage of dissolved inorganic nutrients in seawater: poisoning with mercuric chloride  

Science Journals Connector (OSTI)

Seawater samples were poisoned with mercuric chloride to assess its suitability for the long-term storage measurement of inorganic nutrients. Two series of seawater samples from the open ocean were taken, and nitrate, silicate, phosphate, nitrite and ammonium measured immediately on board. The same samples were poisoned by adding 105 ?g of mercuric chloride per milliliter of sample (total sample volume 50 ml) and measured again after about 1 and 2 years storage. The results show that the poisoning with mercuric chloride is a suitable method for the storage of inorganic nutrients. For nitrate, silicate and phosphate a good accordance was found between the direct measurements and those after 1 and 2 years storage. The results of the determinations coincided with, or were very close to the optimal 1:1 relationship. The variations for nitrite were higher, but due to the generally low concentrations in the oceans these differences will cause no serious problems for the nitrate determination. In contrast, ammonium data, obtained after long storage periods, should be taken with care.

Gerhard Kattner

1999-01-01T23:59:59.000Z

349

Trace element emissions. Semi-annual report, October 1994--February 1995  

SciTech Connect (OSTI)

Many trace elements can exist in raw coal gas either in the form of metallic vapors or gaseous compounds which, besides their action on potentially ``very clean`` advanced power generating systems such as fuel cells and gas turbines, can also be detrimental to plant and animal life when released into the atmosphere. Therefore, volatile trace contaminants from coal which can also be toxic must be removed before they become detrimental to both power plant performance/endurance and the environment. Five trace elements were selected in this project based on: abundance in solid coal, volatility during gasification, effects on downstream systems and toxicity to plant and animal life. An understanding was sought in this investigation of the interactions of these five trace elements (and their high temperature species) with the different components in integrated cleanup and power generating systems, as well as the ultimate effects with respect to atmospheric emissions. Utilizing thermodynamic calculations and various experimental techniques, it was determined that a number of trace contaminants that exist in coal may be substantially removed by flyash, and after that by different sorbent systems. High temperature cleanup of contaminants by sorbents such as zinc titanate, primarily to remove sulfur, can also absorb some metallic contaminants such as cadmium and antimony. Further polishing will be required, however, to eliminate trace contaminant species incorporating the elements arsenic, selemium, lead, and mercury.

Pigeaud, A.; Maru, H.; Wilemski, G.; Helble, J.

1995-02-01T23:59:59.000Z

350

Car?Parrinello Molecular Dynamics Study of Anharmonic Systems:? A Mannich Base in Solution  

Science Journals Connector (OSTI)

Car?Parrinello Molecular Dynamics Study of Anharmonic Systems:? A Mannich Base in Solution ... Proton dynamics play a crucial role in many chemical, biochemical, and industrial processes1-4 because most of the properties of the water, which is the solvent in these systems, can be traced to intermolecular hydrogen bonds. ... However, there is also a fundamental reason for our choice of the atomic velocity power spectrum method; only in this way can we capture the dynamic nature of processes at the molecular level. ...

Aneta Jezierska; Jaros?aw Panek; Urban Borštnik; Janez Mavri; Dušanka Janeži?

2007-04-21T23:59:59.000Z

351

TRACES X-Ray Standard Safety Protocols 1. The equipment should be used under the guidance and supervision of the TRACES Staff or  

E-Print Network [OSTI]

exposed. 3. Personal dosimeter badges must be worn when operating portable X-ray equipment. Wrist sample. 5. The X-Ray instruments are located in TRACES and access is restricted. Furthermore of ANY X-Ray instrumentation is in progress. 8. All lights, meters and controls must be properly labeled

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

352

Root biomass and nutrient content of a 25-year-old loblolly pine (Pinus Taeda L.) plantation in East Texas  

E-Print Network [OSTI]

ROOT BIOMASS AND NUTRIENT CONTENT OF A 25-YEAR-OLD LOBLOLLY PINE (PINUP TAED!l LJ PIJIN ATION IN EAST TEIJIS A Thesis by Charles LaGrone Tuttle Submitted to the Graduate College of Texa s A & M University in partial, fulfillment... of the requirement for the degree of MASTER OF SCIENCE December 1978 iVIajor Subject: Forest S "ience ROOT BIOMASS AND NUTRIENT CONTENT OF A 25-YEAR-OLD LOBLOLLY PINE (PINUS TAEDA L. ) PLANTATION IN EAST TEXAS A Thesis by Charles LaGrone Tuttle Approved...

Tuttle, Charles LaGrone

1978-01-01T23:59:59.000Z

353

Cybersecurity Dynamics Shouhuai Xu  

E-Print Network [OSTI]

Cybersecurity Dynamics Shouhuai Xu Department of Computer Science, University of Texas at San Antonio ABSTRACT We explore the emerging field of Cybersecurity Dynamics, a candidate foundation for the Science of Cybersecurity. Keywords Cybersecurity dynamics, security model, security analysis 1

Xu, Shouhuai

354

Tracing the Fate of Enhanced Organic Carbon Production during a Southern Ocean Fe Fertilization Experiment using Natural Variations in Carbon and Nitrogen Isotopic Composition  

SciTech Connect (OSTI)

This project focused on the N and C natural stable isotope response during SOFeX--a purposeful iron (Fe) addition experiment in the Fe limited Southern Ocean. One purpose of the study was to determine if relief of phytoplankton Fe stress would increase productivity sufficiently to enhance C export from surface to deep waters. We proposed that N and C stable isotopes would be useful for tracing this export. Iron was added to waters north and south of the Antarctic Polar Front in waters to the southwest of New Zealand. While both sites have high-nutrient, low chlorophyll conditions (HNLC) typical of Fe limitation, [SiO4] a required nutrient for diatoms was low at the northerly site and high at the southern location. The most extensive coverage occurred at the southern site. Here, FeSO4 was added four different times over an {approx}two week period. We found that: (1) Particulate organic nitrogen and carbon in the mixed layer increased by a factor of 2-3 in response to the Fe addition in the southern patch. (2) PN accumulation and NO3- drawdown were both 1-2 {micro}M during the occupation of the bloom, suggesting retention of particulates within the mixed layer of the southern patch. (3) {sub 15}N of PN and of NO{sub 3}{sup -} increased by 1-2{per_thousand} as [NO{sub 3}{sup -}] decreased, and there is a clear contrast between in- and out-patch stations with respect to particulate {sub 15}N. The isotopic fractionation factor for NO{sub 3}{sup -} was near 5-6{per_thousand} and appears to have been unaffected by Fe fertilization. In contrast, there was little change in {delta}{sup 13}C. (4) The > 54 {micro}m size fraction was typically lighter than the 1-54 {micro}m size fraction by about 0.5 {per_thousand} in {delta}{sup 13}C. In the south patch, this difference increased as the bloom progressed, and with increasing PN concentration. This result may have been caused by large chain-forming diatoms responded to the Fe addition and were likely isotopically lighter than smaller flagellates. Similar observations were made for {delta}{sup 13}C.

Altabet, M.A.

2005-02-05T23:59:59.000Z

355

Nitrogen isotope ratios in sedimentary organic matter track changes in nutrient utilization and inventories  

SciTech Connect (OSTI)

The isotopic composition of sedimentary nitrogen is a direct proxy for the extent of nutrient draw-down in surface waters and for changes in nutrient inventories in past oceans. In the eastern Pacific, surface sediment [delta][sup 15]N is lowest along the equator where surface ocean nitrate concentration ([NO[sub 3]-]) is highest; [delta][sup 15]N progressively increases and [NO[sub 3]-] decreases to the north and south. This pattern is produced by the formation and sedimentation of [sup 14]N-enriched organic material (OM) where phytoplankton growth is not limited by NO[sub 3]-, and the formation of isotopically heavy OM where NO[sub 3]- is progressively drawn down. Downcore records from the Panama Basin and Northwest Africa show a 1 to 2% decrease in [delta][sup 15]N from the Holocene (0 to 12 ky BP) to the last glacial maximum (LGM, 12 to 24 ky BP) due to a decrease in relative NO[sub 3]-utilization (biological uptake relative to supply) and an increase in OM burial rate due to an increase in productivity. Off northwestern Mexico and in the Arabian Sea, extensive denitrification in intermediate waters causes [delta][sup 15]N-enrichment of the source NO[sub 3]-, so that modern sediment [delta][sup 15]N is high. During the LGM, however, [delta][sup 15]N decreased because productivity and the extent of denitrification both fell. Hence, the global ocean NO[sub 3]- inventory increased, possibly leading to higher global productivity which could have been responsible for the lower glacial atmospheric pCO[sub 2].

Calvert, S.E.; Pedersen, T.F. (Univ. of British Columbia, Vancouver (Canada))

1996-01-01T23:59:59.000Z

356

Nitrogen isotope ratios in sedimentary organic matter track changes in nutrient utilization and inventories  

SciTech Connect (OSTI)

The isotopic composition of sedimentary nitrogen is a direct proxy for the extent of nutrient draw-down in surface waters and for changes in nutrient inventories in past oceans. In the eastern Pacific, surface sediment {delta}{sup 15}N is lowest along the equator where surface ocean nitrate concentration ([NO{sub 3}-]) is highest; {delta}{sup 15}N progressively increases and [NO{sub 3}-] decreases to the north and south. This pattern is produced by the formation and sedimentation of {sup 14}N-enriched organic material (OM) where phytoplankton growth is not limited by NO{sub 3}-, and the formation of isotopically heavy OM where NO{sub 3}- is progressively drawn down. Downcore records from the Panama Basin and Northwest Africa show a 1 to 2% decrease in {delta}{sup 15}N from the Holocene (0 to 12 ky BP) to the last glacial maximum (LGM, 12 to 24 ky BP) due to a decrease in relative NO{sub 3}-utilization (biological uptake relative to supply) and an increase in OM burial rate due to an increase in productivity. Off northwestern Mexico and in the Arabian Sea, extensive denitrification in intermediate waters causes {delta}{sup 15}N-enrichment of the source NO{sub 3}-, so that modern sediment {delta}{sup 15}N is high. During the LGM, however, {delta}{sup 15}N decreased because productivity and the extent of denitrification both fell. Hence, the global ocean NO{sub 3}- inventory increased, possibly leading to higher global productivity which could have been responsible for the lower glacial atmospheric pCO{sub 2}.

Calvert, S.E.; Pedersen, T.F. [Univ. of British Columbia, Vancouver (Canada)

1996-12-31T23:59:59.000Z

357

Trace elements in co-combustion of solid recovered fuel and coal  

Science Journals Connector (OSTI)

Trace element partitioning in co-combustion of a bituminous coal and a solid recovered fuel (SRF) was studied in an entrained flow reactor. The experiments were carried out at conditions similar to pulverized coal combustion, with SRF shares of 7.9 wt.% (wet basis), 14.8 wt.% and 25.0 wt.%. In addition, the effect of additives such as NaCl, PVC, ammonium sulphate, and kaolinite on trace element partitioning was investigated. The trace elements studied were As, Cd, Cr, Pb, Sb and Zn, since these elements were significantly enriched in SRF as compared to coal. During the experiments, bottom ash was collected in a chamber, large fly ash particles were collected by a cyclone with a cut-off diameter of ~ 2.5 ?m, and the remaining fly ash particles were gathered in a filter. It was found that when coal was co-fired with SRF, the As, Cd, Pb, Sb and Zn content in filter ash/cyclone ash increased almost linearly with their content in fuel ash. This linear tendency was affected when the fuels were mixed with additives. The volatility of trace elements during combustion was assessed by applying a relative enrichment (RE) factor, and TEM–EDS analysis was conducted to provide qualitative interpretations. The results indicated that As, Cd, Pb, Sb and Zn were highly volatile when co-firing coal and SRF, whereas the volatility of Cr was relatively low. Compared with coal combustion, co-firing of coal and SRF slightly enhanced the volatility of Cd, Pb and Zn, but reduced the volatility of Cr and Sb. The Cl-based additives increased the volatility of Cd, Pb and As, whereas addition of ammonium sulphate generally decreased the volatility of trace elements. Addition of kaolinite reduced the volatility of Pb, while the influence on other trace elements was insignificant. The results from the present work imply that trace element emission would be significantly increased when coal is co-fired with SRF, which may greatly enhance the toxicity of the dusts from coal-fired power plant. In order to minimize trace element emission in co-combustion, in addition to lowering the trace element content in SRF, utilizing SRF with low Cl content and coal with high S and aluminosilicates content would be desirable.

Hao Wu; Peter Glarborg; Flemming Jappe Frandsen; Kim Dam-Johansen; Peter Arendt Jensen; Bo Sander

2013-01-01T23:59:59.000Z

358

Climate change impacts on nutrient loads in theYorkshire Ouse catchment (UK) Hydrology and Earth System Sciences, 6(2), 197209 (2002) EGS  

E-Print Network [OSTI]

Climate change impacts on nutrient loads in theYorkshire Ouse catchment (UK) 197 Hydrology and Earth System Sciences, 6(2), 197­209 (2002) © EGS Climate change impacts on nutrient loads for corresponding author: faycal.bouraoui@jrc.it Abstract This study assessed the impact of potential climate change

Paris-Sud XI, Université de

359

Control of nutrient pollution to U.S. waterways is an urgent issue for the nation. In 2013, the U.S. Environmental Protection Agency  

E-Print Network [OSTI]

Nutrient Trading Water Law and Water Rights Sustainable N and P Solutions Center for Comprehensive, Optima Innovative Approaches for Wastewater Management and Water Demand Reduction Project 2: Urban Stormwater and control the sources of excess nutrients in wastewater, stormwater, agricultural water, and natural systems

360

Removal of Eutrophic Nutrients from Wastewater and their UNIVERSITY OF THE DISTRICT OF COLUMBIA Bioconversion to Bacterial Single Cell Protein for Animal  

E-Print Network [OSTI]

Removal of Eutrophic Nutrients from Wastewater and their UNIVERSITY OF THE DISTRICT OF COLUMBIA OF EUTROPHIC NUTRIENTS FROM WASTEWATER AND THEIR BIOCONVERSION TO BACTERIAL SINGLE CELL PROTEIN FOR ANIMAL FEED ......................................................................................................10 3. Nutritive quality of A. eutrophus biomass grown in wastewater (digester elutriate) as a protein

District of Columbia, University of the

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Effect of dietary polyunsaturated fatty acids and related nutrients on sebum lipids, and skin and hair coat condition in canines  

E-Print Network [OSTI]

A study was performed to investigate the effect of diets rich in polyunsaturated fatty acids and other related nutrients, in the effort to improve skin and hair coat conditions in canines. The study included 24 dogs fed a baseline diet (Ol...

Kirby, Naomi Anne

2005-02-17T23:59:59.000Z

362

Glacial/interglacial changes in nutrient supply and stratification in the western subarctic North Pacific since the penultimate glacial maximum  

E-Print Network [OSTI]

Geological Institute, Eidgenössische Technische Hochschule, Sonneggstrasse 5, Zürich CH-8092, Switzerland c Department of Geosciences, Williams College, 947 Main Street, Williamstown, MA 01267, USA f Leibniz Center deglacial decrease in the iron-to-nitrate ratio of subsurface nutrient supply or the predominance of light

Gilli, Adrian

363

NITRATE UTILIZATION BY PHYTOPLANKTON IN LAKE SUPERIOR IS IMPAIRED BY LOW NUTRIENT (P, Fe) AVAILABILITY AND SEASONAL LIGHT LIMITATION--  

E-Print Network [OSTI]

NITRATE UTILIZATION BY PHYTOPLANKTON IN LAKE SUPERIOR IS IMPAIRED BY LOW NUTRIENT (P, Fe utilization in this oligotrophic system. Clean sampling methods were used to collect water from Lake Superior during spring and summer 2004, and nitrate utilization was measured by monitoring bioreporter

Sterner, Robert W.

364

Effects of wood chip ash fertilization on soil chemistry in a Norway spruce plantation on a nutrient-poor soil  

Science Journals Connector (OSTI)

Abstract Harvest of forest biomass for energy production may lead to export of nutrients from the forest. Recirculation of nutrients from wood chip combustion by ash spreading in forests has been proposed as a means for counteracting the nutrient export. This study was carried out to examine the effect of wood chip ash application on soil chemistry in a 44-year-old Norway spruce (Picea abies) plantation on a nutrient-poor soil in Denmark and to investigate the effect of applying different ash types and doses. Soil samples were collected and analyzed 2.5 years (3 growing seasons) after ash application. This study shows that, regardless of ash formulation, preparation or dose, application of wood ash to forest soil has a liming effect in the O-horizon manifested as an increase in CECe, BS and pH. This effect was not seen in the mineral soil within the time frame of this study. At the same time, an increase in Cd was found in the O-horizon, corresponding to the amount added in the ashes. Generally, no other increase in soil contents of the heavy metals was seen. Hardening of the wood ash did not decrease the chemical impact on the soil chemistry as compared to non-treated ash whereas an increase in ash application dose increases the liming effect.

Morten Ingerslev; Mette Hansen; Lars Bo Pedersen; Simon Skov

2014-01-01T23:59:59.000Z

365

The effect of cranberry cultivation and restoration on nutrient uptake, cycling, and decomposition in three streams on Cape Cod  

E-Print Network [OSTI]

, cranberry cultivation, restoration Introduction Humans manipulate and alter whole ecosystems in order, and are necessary to maintaining a healthy environment. They link aquatic and terrestrial ecosystems, and filterThe effect of cranberry cultivation and restoration on nutrient uptake, cycling, and decomposition

Vallino, Joseph J.

366

Erythroneura lawsoni abundance and feeding injury levels are influenced by foliar nutrient status in intensively managed American sycamore.  

SciTech Connect (OSTI)

Abstract 1 Abundance and feeding injury of the leafhopper Erythroneura lawsoni Robinson was measured in an intensively-managed American sycamore Platanus occidentalis L. plantation. Trees were planted in spring 2000 in a randomized complete block design, and received one of three annual treatments: (i) fertilization (120 kg N/ha/year); (ii) irrigation (3.0 cm/week); (iii) fertilization + irrigation; or (iv) control (no treatment). 2 Foliar nutrient concentrations were significantly influenced by the treatments because only sulphur and manganese levels were not statistically greater in trees receiving fertilization. 3 Over 116 000 E. lawsoni were captured on sticky traps during the study. Leafhopper abundance was highest on nonfertilized trees for the majority of the season, and was positively correlated with foliar nutrient concentrations. Significant temporal variation in E. lawsoni abundance occurred, suggesting five discrete generations in South Carolina. 4 Significant temporal variation occurred in E. lawsoni foliar injury levels, with the highest injury ratings occurring in late June and August. Foliar injury was negatively correlated with foliar nutrient content, and higher levels of injury occurred more frequently on nonfertilized trees. 5 The results obtained in the present study indicated that increased E. lawsoni abundance occurred on trees that did not receive fertilization. Nonfertilized trees experienced greater foliar injury, suggesting that lower foliar nutrient status may have led to increased levels of compensatory feeding.

Coyle, David, Robert: Aubrey, Doug, Patric; Bentz, Jo-Ann

2010-01-01T23:59:59.000Z

367

Heat flux dynamics in dissipative cascaded systems  

E-Print Network [OSTI]

We study the dynamics of heat flux in the thermalization process of a pair of identical quantum system that interact dissipatively with a reservoir in a {\\it cascaded} fashion. Despite the open dynamics of the bipartite system S is globally Lindbladian, one of the subsystems "sees" the reservoir in a state modified by the interaction with the other subsystem and hence it undergoes a non-Markovian dynamics. As a consequence, the heat flow exhibits a non-exponential time behaviour which can greatly deviate from the case where each party is independently coupled to the reservoir. We investigate both thermal and correlated initial states of $S$ and show that the presence of correlations at the beginning can considerably affect the heat flux rate. We carry out our study in two paradigmatic cases -- a pair of harmonic oscillators with a reservoir of bosonic modes and two qubits with a reservoir of fermionic modes -- and compare the corresponding behaviours. In the case of qubits and for initial thermal states, we find that the trace distance discord is at any time interpretable as the correlated contribution to the total heat flux.

Salvatore Lorenzo; Alessandro Farace; Francesco Ciccarello; G. Massimo Palma; Vittorio Giovannetti

2014-12-19T23:59:59.000Z

368

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Details Activities (1) Areas (1) Regions (0) Abstract: Vein and alteration assemblages from eight Coso wells have been collected and their fluid-inclusion gases analyzed by quadrupole mass spectrometry. Four major types of alteration were sampled: 1) young calcite-hematite-pyrite veins; 2) wairakite or epidote veins and alteration that are spatially associated with deep reservoirs in the main field and eastern wells; 3) older sericite and pyrite wallrock alteration; and 4) stilbite-calcite veins that are common in cooler or marginal portions of

369

Trace Element Analysis At Roosevelt Hot Springs Area (Christensen, Et Al.,  

Open Energy Info (EERE)

Christensen, Et Al., Christensen, Et Al., 1983) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Roosevelt Hot Springs Area (Christensen, Et Al., 1983) Exploration Activity Details Location Roosevelt Hot Springs Area Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes Three of the recognized trace-element suites are characteristic of the surface and near-surface environment. These are: (1) concentrations of As, Sb, Be and Hg associated with siliceous material at the location of liquid discharge, fluid mixing, or at boiling interfaces; (2) deposits of Mn and Fe oxides containing concentrations of Ba, W, Be, Co, Cu, As, Sb and Hg formed by the oxidation of cooled brines; and (3) high concentrations of Hg

370

Patterns in the Cosmos Trace Evolution of the Universe | U.S. DOE Office of  

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

Patterns in the Cosmos Trace Evolution of the Universe Patterns in the Cosmos Trace Evolution of the Universe High Energy Physics (HEP) HEP Home About Research Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees News & Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: sc.hep@science.doe.gov More Information » August 2013 Patterns in the Cosmos Trace Evolution of the Universe Detection of subtle polarization patterns in the Cosmic Microwave Background opens a new window on fundamental physics and cosmology. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Stephen Hoover (SPT Team member)

371

Trace Element Analysis At Northern Basin & Range Region (Coolbaugh, Et Al.,  

Open Energy Info (EERE)

At Northern Basin & Range Region (Coolbaugh, Et Al., At Northern Basin & Range Region (Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Northern Basin & Range Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Northern Basin and Range Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for

372

A Novel Approach to Reduce Ray Tracing Simulation Times by Predicting Number or Rays  

Science Journals Connector (OSTI)

Abstract A ray tracer, specifically designed for concentrating solar power systems, has been developed at the Solar Thermal Energy Research Group (STERG). In most ray tracers a simulation runs until a number of rays, predefined by the user, have been traced. In a novel approach the raytracer uses a user defined tolerable error and confidence interval to predict and automatically trace the required number of rays for a simulation. This reduces computational time as only the minimum required number of rays are traced. This method has not been incorporated into any of the openly available ray tracers. The method and algorithm incorporated into the STERG raytracer are described here. As a validation test case the Eurodish and optimised field layout of Planta Solar 10 plant have been simulated.

S.J. Bode; P. Gauché; D. Griffith

2014-01-01T23:59:59.000Z

373

Trace Element Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et  

Open Energy Info (EERE)

Coolbaugh, Et Coolbaugh, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Central Nevada Seismic Zone Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Central Nevada Seismic Zone Geothermal Region Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes "This second paper provides more detailed documentation on water and rock geochemistries and describes diagnostic major and trace element ratios and concentrations that can be used to distinguish tufa columns formed from thermal waters from those that formed from non-thermal waters." "In addition to providing a potentially diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa

374

Dynamic Multilevel Hybrid Scheduling Algorithms for Grid Computing  

Science Journals Connector (OSTI)

A ‘Grid’ is an infrastructure for resource sharing. It is used for large-scale data processing, many of the applications being scientific ones. Grid scheduling is a vital component of a Grid infrastructure. Reliability, efficiency (in terms of time consumption) and effectiveness in resource utilization are the desired characteristics of Grid scheduling systems. Many algorithms have been developed for Grid scheduling. In our previous work, we proposed two scheduling algorithms (the Multilevel Hybrid Scheduling Algorithm and the Multilevel Dual Queue Scheduling Algorithm) for optimum utilization of processors in a Grid computing environment. In this paper, we propose two more flavours of Multilevel Hybrid scheduling algorithms; i.e. the Dynamic Multilevel Hybrid Scheduling Algorithm using Median and the Dynamic Multilevel Hybrid Scheduling Algorithm using Square root. We evaluate our proposed Grid scheduling using real workload traces, taken from leading computational centers. The main idea of the proposed algorithms is to execute jobs optimally, i.e. with minimum average waiting, turnaround and response times. An extensive performance comparison is presented using real workload traces to evaluate the efficiency of scheduling algorithms. To facilitate the research, a software tool has been developed which produces a comprehensive simulation of a number of Grid scheduling algorithms. The tool's output is in the form of scheduling performance metrics. The experimental results, based on performance metrics, demonstrate that the performances of our Grid scheduling algorithms give good results. Our proposed scheduling algorithms also support true scalability, that is, they maintain an efficient approach when increasing the number of processors or nodes. This paper also includes a statistical analysis of real workload traces to present the nature and behavior of jobs. Our proposed scheduling algorithms are unique. They have three key features. First, they favor the shortest job for execution. Second, they execute the job on the basis of a dynamic time quantum, to fairly distribute processor time among Grid jobs. A third feature is that they always execute the longest job, thus avoiding starvation.

Syed Nasir Mehmood Shah; Ahmad Kamil Bin Mahmood; Alan Oxley

2011-01-01T23:59:59.000Z

375

Atmospheric Trace Gases from the Carbon Dioxide Information Analysis Center (CDIAC)  

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

CDIAC products are indexed and searchable through a customized interface powered by ORNL's Mercury search engine. Products include numeric data packages, publications, trend data, atlases, models, etc. and can be searched for by subject area, keywords, authors, product numbers, time periods, collection sites, spatial references, etc. Some of the collections may also be included in the CDIAC publication, Trends Online: A Compendium of Global Change Data. Most data sets, many with numerous data files, are free to download from CDIAC's ftp area. The collections under the CDIAC heading of Atmospheric Trace Gases include: Atmospheric Carbon Dioxide, Atmospheric Methane, Atmospheric Carbon Monoxide, Atmospheric Hydrogen, Isotopes in Greenhouse Gases, Radionuclides, Aerosols, and Other Trace Gases.

376

Batch methods for enriching trace impurities in hydrogen gas for their further analysis  

DOE Patents [OSTI]

Provided herein are batch methods and devices for enriching trace quantities of impurities in gaseous mixtures, such as hydrogen fuel. The methods and devices rely on concentrating impurities using hydrogen transport membranes wherein the time period for concentrating the sample is calculated on the basis of optimized membrane characteristics, comprising its thickness and permeance, with optimization of temperature, and wherein the enrichment of trace impurities is proportional to the pressure ratio P.sub.hi/P.sub.lo and the volume ratio V.sub.1/V.sub.2, with following detection of the impurities using commonly-available detection methods.

Ahmed, Shabbir; Lee, Sheldon H.D.; Kumar, Romesh; Papdias, Dionissios D.

2014-07-15T23:59:59.000Z

377

Runtime Tracing of The Community Earth System Model: Feasibility and Benefits  

SciTech Connect (OSTI)

Community Earth System Models (CESM) is one of US's leading earth system modeling systems, which has over decades of development history and embraced by large, active user communities. In this paper, we first review the history of CESM software development and layout the general objectives of performance analysis. Then we present an offline global community land model simulation within the CESM framework to demonstrate the procedure of runtime tracing of CESM using the Vampir toolset. Finally, we explain the benefits of runtime tracing to the general earth system modeling community. We hope those considerations can also be beneficial to many other modeling research programs involving legacy high-performance computing applications.

Wang, Dali [ORNL] [ORNL; Domke, Jens [ORNL] [ORNL

2011-01-01T23:59:59.000Z

378

Towards the SocioScope: an Information System for the the Study of Social Dynamics through Digital Traces  

E-Print Network [OSTI]

Over the past decade there has been an explosion in the deployment of pervasive systems like cell phone networks and content aggregators on the Internet that produce massive amounts of data as by-products of their interaction ...

Liu, Bing

379

Usage of CO2 microbubbles as flow-tracing contrast media in X-ray dynamic imaging of blood flows  

Science Journals Connector (OSTI)

CO2 microbubbles as a contrast agent were fabricated and a velocity field of 40% hematocrit blood flows was acquired using the synchrotron X-ray particle image velocimetry technique.

Lee, S.J.

2014-07-31T23:59:59.000Z

380

Conformal invariance, dynamical dark energy and the CMB  

SciTech Connect (OSTI)

Einstein's General Relativity receives quantum corrections relevant at cosmological distance scales. These effects arise from conformal scalar degrees of freedom in the extended Effective Field Theory (EFT) of gravity required by the trace anomaly of the quantum stress tensor in curved space. Scalar degrees of freedom in cosmology arise naturally from the effective action of the trace anomaly in the Standard Model, without the ad hoc introduction of an inflaton field. In the EFT including the trace anomaly terms, {Lambda}{sub eff} becomes dynamical and potentially dependent upon both space and time. The fluctuations of these anomaly scalars may also influence the spectrum and statistics of the Cosmic Microwave Background (CMB). Under the hypothesis that scale invariance should be promoted to full conformal invariance, an hypothesis supported by the embedding of the conformal group of three dimensional flat sections in de Sitter space, the form of the CMB bi-spectrum can be fixed, and the tri-spectrum constrained. The angular spectra predicted by conformal invariance differ from those suggested by simple models of inflation.

Mottola, Emil [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Combining CSP and ObjectZ: Finite or Infinite Trace Semantics?  

E-Print Network [OSTI]

Combining CSP and Object­Z: Finite or Infinite Trace Semantics? Clemens Fischer Universit semantics as a means of com­ bining CSP with Object­Z. The purpose of this combination is to more effectively specify complex, concurrent systems: while CSP is ideal for modelling systems of concurrent

Olderog, Ernst-Rüdiger

382

Traces of mercury surprise water officials By Mark Noack [ mark@hmbreview.com  

E-Print Network [OSTI]

Print Page Traces of mercury surprise water officials By Mark Noack [ mark of high mercury levels in fish found in Crystal Springs Reservoir -- an important water source, the test suggested the Crystal Springs fish population had one of the highest mercury levels in the state

383

Obfuscatory obscanturism: making workload traces of commercially-sensitive systems safe to release  

E-Print Network [OSTI]

in supporting planetary-scale distributed systems, but no academic organizations have similar scale systems of the largest clusters today are used for commercial workloads that support large-scale Internet services, which. For example, traces from Hadoop MapReduce analytics clusters at Facebook and Yahoo showed that small jobs

Tomkins, Andrew

384

MULTI-TRACAGE DE LA FONTAINE DE NIMES Multi-tracing of Fontaine de Nmes  

E-Print Network [OSTI]

.jouanen@free.fr 3 European Water Tracing Services, rue de la Chapelle 43, B-4550 Nandrin, Belgique, e-mail : ewts de Nîmes (ii) le conduit karstique ouest joue un rôle majeur dans le drainage du bassin d results are following: (i) all the dye tracers have been identified at the Fontaine de Nimes spring (ii

Boyer, Edmond

385

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand  

E-Print Network [OSTI]

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand Northeastern University dimvar@ccs.neu.edu wand@ccs.neu.edu Abstract. Orc [9] is a language for task orchestration. It has validates some useful equivalences between Orc processes; since the se- mantics is compositional

Wand, Mitchell

386

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand  

E-Print Network [OSTI]

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand Northeastern University dimvar@ccs.neu.edu wand@ccs.neu.edu Abstract. Orc [6] is a language for task orchestration. It has treatment of variable binding, and proving an adequacy theorem to relate them. 1 Introduction Orc [6

Strickland, Stevie

387

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand  

E-Print Network [OSTI]

A compositional trace semantics for Orc Dimitrios Vardoulakis and Mitchell Wand Northeastern University dimvar@ccs.neu.edu wand@ccs.neu.edu Abstract. Orc [9] is a language for task orchestration. It has binding, and proving an adequacy theorem to relate them. Also, we investigate strong bisimulation in Orc

Strickland, Stevie

388

EnergyBox: A Trace-driven Tool for Data Transmission Energy Consumption Studies  

E-Print Network [OSTI]

EnergyBox: A Trace-driven Tool for Data Transmission Energy Consumption Studies Ekhiotz Jon Vergara-awareness and propose EnergyBox, a tool that provides accurate and repeatable en- ergy consumption studies for 3G and WiFi transmissions at the user end. We recognize that the energy consumption of data transmission is highly

389

Trace metal concentration in blood of the Kemp's ridley sea turtle (Lepidochelys kempii)  

E-Print Network [OSTI]

characterized the level of five trace metals in Kemp's ridleys and compared these levels in headstart and wild cohorts as well as between the sexes. Overall, copper, lead, mercury, silver and zinc levels in the blood of Kemp's ridleys were: copper (range = 215...

Orvik, Lisa Marie

1997-01-01T23:59:59.000Z

390

SPIE Aerosense, Vol. 4394, paper 108, April 2001 Aerodynamic sampling for landmine trace detection  

E-Print Network [OSTI]

SPIE Aerosense, Vol. 4394, paper 108, April 2001 Aerodynamic sampling for landmine trace detection research on canine olfactory aerodynamics revealed several ways that evolution has dealt with such problems source, 3) use an aerodynamic collar on the sniffer inlet, 4) use auxiliary airjets to stir up surface

Settles, Gary S.

391

Evaluating Trace Cache Energy Efficiency MICHELE CO, DEE A. B. WEIKLE, and KEVIN SKADRON  

E-Print Network [OSTI]

Evaluating Trace Cache Energy Efficiency MICHELE CO, DEE A. B. WEIKLE, and KEVIN SKADRON University of Virginia Future fetch engines need to be energy efficient. Much research has focused on improving fetch of basic blocks translates to significant energy-efficiency gains. We compare proces- sor performance

Skadron, Kevin

392

Trace metal remobilization following the resuspension of estuarine sediments: Saguenay Fjord, Canada  

E-Print Network [OSTI]

Trace metal remobilization following the resuspension of estuarine sediments: Saguenay Fjord to the resuspension of the Fjord sediments, their exposure to an oxidising environment, and the remobilization the resuspension experiments re�ect the reactivity of the carrier phases and the competing kinetics of the release

Long, Bernard

393

Awareness Predicts the Magnitude of Single-Cue Trace Eyeblink Conditioning  

E-Print Network [OSTI]

conditioned response; CR). In delay eyeblink conditioning, the tone remains on until the air puff has beenAwareness Predicts the Magnitude of Single-Cue Trace Eyeblink Conditioning Joseph R. Manns1 Robert conditioning (CS and CS- ) have demonstrated that successful conditioning requires awareness of the stimulus

Squire, Larry R.

394

Nuclear and Trace Ideals in Tensored \\LambdaCategories Samson Abramsky \\Lambda  

E-Print Network [OSTI]

Nuclear and Trace Ideals in Tensored \\Lambda­Categories Samson Abramsky \\Lambda Department of his 60th birthday. Abstract We generalize the notion of nuclear maps from functional analysis by defining nuclear ideals in tensored \\Lambda­categories. The motivation for this study came from attempts

Blute, Richard

395

www.computer.org/software Improving After-the-Fact Tracing and Mapping  

E-Print Network [OSTI]

(Do all low-level ele- ments have parents?), focus Improving After-the-Fact Tracing and Mapping, you need only look at one headline-grabbing in- cident. When NASA lost its Mars Climate Or- biter, US taxpayers lost a $125 million space- craft, and the space program lost the single communication link that was to

Hayes, Jane E.

396

Trace gas contaminant control in a space station atmosphere using adsorption  

SciTech Connect (OSTI)

Trace contaminants enter spacecraft atmospheres through offgassing of spacecraft materials and as products of crew metabolism. The consequences of fire or accidental release of toxic vapors from onboard systems is also a crew safety concern. The purpose of this work was to determine how these contaminants could be limited to safe concentrations in the atmosphere of the proposed space station. Contaminant source models were developed from spacecraft material offgassing and human metabolic production rate measurements. Contaminants were represented with a simplified model of 30 compounds by grouping similar species together. A trace contaminant control process, which consists of chemisorption of ammonia on phosphoric acid-impregnated activated carbon, ambient temperature catalytic oxidation of hydrogen and carbon monoxide, catalytic conversion of the sulfur in hydrogen sulfide and mercaptans to elemental sulfur, and adsorption of the other contaminants in a regenerable activated carbon adsorber, was proposed. Trace contaminant adsorption rate and equilibrium equations were derived. Various adsorbents were evaluated to determine the optimum sorbents for this application. Removal system performance limits were established, and optimum design ranges for process parameters were developed. Trace gas contaminants can be limited to safe concentrations by the process proposed under normal conditions using as little as 1 Kg/man-year of ammonia chemisorbent. The most likely accidental contaminant releases can be removed in {approximately}20 hours using frequent adsorber regenerations.

Winter, J.D.

1988-01-01T23:59:59.000Z

397

Distribution of trace elements in waters and sediments of the Seversky Donets  

E-Print Network [OSTI]

Distribution of trace elements in waters and sediments of the Seversky Donets transboundary sources in the transboundary watershed of the Seversky Donets River (Ukraine/Russia). Bed sediments, V) and Th were measured in stream water and sediments. The low levels and variability of Th

Paris-Sud XI, Université de

398

TRACE/PARCS Core Modeling of a BWR/5 for Accident Analysis of ATWS Events  

SciTech Connect (OSTI)

The TRACE/PARCS computational package [1, 2] isdesigned to be applicable to the analysis of light water reactor operational transients and accidents where the coupling between the neutron kinetics (PARCS) and the thermal-hydraulics and thermal-mechanics (TRACE) is important. TRACE/PARCS has been assessed for itsapplicability to anticipated transients without scram(ATWS) [3]. The challenge, addressed in this study, is to develop a sufficiently rigorous input model that would be acceptable for use in ATWS analysis. Two types of ATWS events were of interest, a turbine trip and a closure of main steam isolation valves (MSIVs). In the first type, initiated by turbine trip, the concern is that the core will become unstable and large power oscillations will occur. In the second type,initiated by MSIV closure,, the concern is the amount of energy being placed into containment and the resulting emergency depressurization. Two separate TRACE/PARCS models of a BWR/5 were developed to analyze these ATWS events at MELLLA+ (maximum extended load line limit plus)operating conditions. One model [4] was used for analysis of ATWS events leading to instability (ATWS-I);the other [5] for ATWS events leading to emergency depressurization (ATWS-ED). Both models included a large portion of the nuclear steam supply system and controls, and a detailed core model, presented henceforth.

Cuadra A.; Baek J.; Cheng, L.; Aronson, A.; Diamond, D.; Yarsky, P.

2013-11-10T23:59:59.000Z

399

High Precision Load Current Sensing using On-Line Calibration of Trace Resistance  

E-Print Network [OSTI]

-line specification. This and high-bandwidth measurement of the load current in the allows the converter to follow pose unprecedented demands on DC-DC power converters, it could be very difficult to follow the loadHigh Precision Load Current Sensing using On-Line Calibration of Trace Resistance in VRM

Sanders, Seth

400

THE TRACE FORMULA IN BANACH SPACES W. B. JOHNSON AND A. SZANKOWSKI  

E-Print Network [OSTI]

THE TRACE FORMULA IN BANACH SPACES W. B. JOHNSON AND A. SZANKOWSKI Abstract. A classical result spaces, asymptotically Hilbertian spaces. Johnson was supported in part by NSF DMS-1001321 and the U.S.-Israel Bina- tional Science Foundation. 1 #12;2 W. B. JOHNSON AND A. SZANKOWSKI is well defined, i.e. does

Johnson, William B.

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Elevated Trace Element Concentrations in Southern Toads, Bufo terrestris, Exposed to Coal Combustion Waste  

E-Print Network [OSTI]

, and behavioral abnormalities in amphibians to coal combustion wastes (coal ash). Few studies, however, have determined trace element concentrations in amphibians exposed to coal ash. In the current study we compare high levels of selenium and may be useful bioindicators in agricultural and coal ash-impacted habitats

Hopkins, William A.

402

Rejection and fate of trace organic compounds (TrOCs) during membrane distillation  

E-Print Network [OSTI]

Rejection and fate of trace organic compounds (TrOCs) during membrane distillation Kaushalya COCs) Direct contact membrane distillation (DCMD) Volatility Fate and transport Hydrophobicity/hydrophilicity a b s t r a c t In this study, we examined the feasibility of membrane distillation (MD) for removing

403

Abstract ID 616 MC-TRACE: MULTICASTING THROUGH TIME RESERVATION USING ADAPTIVE CONTROL  

E-Print Network [OSTI]

FOR ENERGY EFFICIENCY Bulent Tavli and Wendi B. Heinzelman Department of Electrical and Computer Engineering Reservation using Adaptive Control for Energy efficiency (MC-TRACE), which is an energy-efficient voice a multicast tree within a mobile ad hoc network using broadcasting to establish the desired tree branches

Heinzelman, Wendi

404

Trace metal concentration and fish size: Variation among fish species in a Mediterranean river  

E-Print Network [OSTI]

29 April 2014 Accepted 12 May 2014 Keywords: Bioaccumulation Heavy metals Llobregat River species in an Iberian river with moderate metal pollution. Al, Fe and Zn were the most abundant metals trace elements (Bervoets and Blust, 2003; Noël et al., 2013). Heavy metals in fish represent a potential

García-Berthou, Emili

405

Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution  

E-Print Network [OSTI]

, or both. Tree rings have been used to construct records of climate (1), document heavy metal pollution (2Trace Elements in Tree Rings: Evidence of Recent and Historical Air Pollution C. F. Baes III and S and Historical Air Pollution Abstract. Annual growth rinks from short-leaf pine trees in the Great Smoky

Baes, Fred

406

Effect of Processing Mode on Trace Elements in Dewatered Sludge Products Brian K. Richards1  

E-Print Network [OSTI]

Effect of Processing Mode on Trace Elements in Dewatered Sludge Products Brian K. Richards1 *, John considering the land application of wastewater sludges. The effects of pelletization/drying, composting compared. A single day's production of dewatered anaerobically-digested sludge (Syracuse, NY) was used

Walter, M.Todd

407

A Static Dilution System to Produce Trace Level Gas Standards for Chromatography  

Science Journals Connector (OSTI)

......trace chromatographic analysis of extraneous gases...standards for quantitative analysis of O2, N 2 , and other...its versatility and reliability. Introduction High-purity...atmosphere), and in analysis (as a carrier gas for...dried in a silica gel reactor before being admitted......

N.P. Neves; Jr.; C.A. Gasparoto; C.H. Collins

1995-10-01T23:59:59.000Z

408

Guidelines for Emotion Annotation in AMI (based on the original FeelTrace documentation)  

E-Print Network [OSTI]

Guidelines for Emotion Annotation in AMI (based on the original FeelTrace documentation) Revision. This scheme uses a program called FEELTRACE to track the perceived emotional state in data continuously over time. This document is an almost exact reproduction of the guidelines that are provided

Edinburgh, University of

409

Introduction Idealized Moist Jet/Front Waves Ray Tracing Momentum Flux/Forcing Conclusion Gravity Waves  

E-Print Network [OSTI]

Introduction Idealized Moist Jet/Front Waves Ray Tracing Momentum Flux/Forcing Conclusion Gravity Waves in Moist Baroclinic Jet-Front Systems Junhong Wei, Fuqing Zhang Department of Meteorology The Pennsylvania State University Tuesday 19th August, 2014 #12;Introduction Idealized Moist Jet/Front Waves Ray

Thompson, Anne

410

Trace element partitioning between baddeleyite and carbonatite melt at high pressures and high temperatures  

E-Print Network [OSTI]

as the heavy rare earth elements (HREE) prefer to enter baddeleyite rather than carbonate melts (D>1), whereas the light rare earth elements (LREE) and other trace elements behave incompatibly (D in carbonatite melts. Baddeleyite is known to accumulate the high field strength elements (HFSE) and some rare

411

An Effective Subdivision Algorithm for Diffuse Scattering of Ray Tracing Mingming Gan1  

E-Print Network [OSTI]

Department of Electrical and Information Technology, Lund University, Lund, Sweden Contact: gan@ftw.at Abstract Accurate modeling of electromagnetic wave propagation by means of ray tracing (RT) includes by evaluating the power delay profile (PDP), delay spread and angular spread. 1 Introduction Diffuse scattering

Zemen, Thomas

412

Calibration of Indoor UWB Sub-band Divided Ray Tracing Using Multiobjective Simulated Annealing  

E-Print Network [OSTI]

, Sweden; 5 ICTEAM, Universit´e catholique de Louvain, Belgium Abstract--Sub-band divided ray tracing (RT) has been widely used to reproduce as reliably as possible the ultra-wideband (UWB) radio wave the accuracy of sub-band divided RT in terms of the power delay profile (PDP) and the root mean square (RMS

Zemen, Thomas

413

HEAT KERNELS ON METRIC GRAPHS AND A TRACE FORMULA VADIM KOSTRYKIN, J  

E-Print Network [OSTI]

HEAT KERNELS ON METRIC GRAPHS AND A TRACE FORMULA VADIM KOSTRYKIN, J Ë? URGEN POTTHOFF, AND ROBERT SCHRADER Dedicated to Jean­Michel Combes on the occasion of his 65­th birthday ABSTRACT. We study heat parameter. For such op­ erators we prove a representation for the heat kernel as a sum over all walks

414

Reasoning by Assumption: Formalisation and Analysis of Human Reasoning Traces Tibor Bosse  

E-Print Network [OSTI]

undertaken. 1. Introduction Practical reasoning processes are often not limited to single reasoning steps, but extend to traces or trajectories of a number of interrelated reasoning steps over time. This paper-deductive) practical reasoning pattern involves a number of interrelated reasoning steps, and uses in its reasoning

Bosse, Tibor

415

Tracing algal support of marine food webs with fatty acids FHL Tide Bites #3 Nov. 2013  

E-Print Network [OSTI]

and into marine animals. Why do we care? Understanding which energy sources "fuel" the food web will ultimatelyTracing algal support of marine food webs with fatty acids FHL Tide Bites #3 Nov. 2013 Marine food enable better management of marine ecosystems. Believe it or not, scientists know very little about what

Carrington, Emily

416

IJS procedure for RELAP5 to TRACE input model conversion using SNAP  

SciTech Connect (OSTI)

The TRAC/RELAP Advanced Computational Engine (TRACE) advanced, best-estimate reactor systems code developed by the U.S. Nuclear Regulatory Commission comes with a graphical user interface called Symbolic Nuclear Analysis Package (SNAP). Much of efforts have been done in the past to develop the RELAP5 input decks. The purpose of this study is to demonstrate the Institut 'Josef Stefan' (IJS) conversion procedure from RELAP5 to TRACE input model of BETHSY facility. The IJS conversion procedure consists of eleven steps and is based on the use of SNAP. For calculations of the selected BETHSY 6.2TC test the RELAP5/MOD3.3 Patch 4 and TRACE V5.0 Patch 1 were used. The selected BETHSY 6.2TC test was 15.24 cm equivalent diameter horizontal cold leg break in the reference pressurized water reactor without high pressure and low pressure safety injection. The application of the IJS procedure for conversion of BETHSY input model showed that it is important to perform the steps in proper sequence. The overall calculated results obtained with TRACE using the converted RELAP5 model were close to experimental data and comparable to RELAP5/MOD3.3 calculations. Therefore it can be concluded, that proposed IJS conversion procedure was successfully demonstrated on the BETHSY integral test facility input model. (authors)

Prosek, A.; Berar, O. A. [Josef Stefan Inst., Jamova cesta 39, SI-1000 Ljubljana (Slovenia)

2012-07-01T23:59:59.000Z

417

SELECTIVE FILTER FOR SnO2 BASED GAS SENSOR : APPLICATION TO HYDROGEN TRACE DETECTION  

E-Print Network [OSTI]

are requested in several fields such as applications [1], fuel cell [2], radioactive waste storage and diverse selectivity of a sensor includes the addition of a catalyst to the tin oxide powder. In the case of hydrogen1 SELECTIVE FILTER FOR SnO2 BASED GAS SENSOR : APPLICATION TO HYDROGEN TRACE DETECTION G

Paris-Sud XI, Université de

418

Three-Pulse Photon Echo of Finite Numbers of Molecules: Single-Molecule Traces  

E-Print Network [OSTI]

Three-Pulse Photon Echo of Finite Numbers of Molecules: Single- Molecule Traces Hui Dong and Graham, 6227]. To avoid this drawback of ensemble measurements and evaluate single-molecule behavior, a quantum the fluctuations inherent to single molecules. The current method takes advantage of the coherent state

Fleming, Graham R.

419

``Designing Lagrangian experiments to measure regional-scale trace gas fluxes''  

E-Print Network [OSTI]

``Designing Lagrangian experiments to measure regional-scale trace gas fluxes'' J. C. Lin,1 C gas fluxes at the land surface is essential for understanding the impact of human activities as they travel over the landscape. Successful Lagrangian experiments depend critically on forecasts of air parcel

420

Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, 18  

E-Print Network [OSTI]

Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, 18 O, D: Noble gases Strontium isotopes Helium isotopes Geothermal energy Los Azufres Araró Mexico Isotopes of noble gases, CO2, H2O and Sr were measured in 10 geothermal wells and 8 hot springs, fumaroles and mud

Long, Bernard

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

ON THE ECONOMIC PAYOFF OF FORENSIC SYSTEMS WHEN USED TO TRACE COUNTERFEITED SOFTWARE AND  

E-Print Network [OSTI]

ON THE ECONOMIC PAYOFF OF FORENSIC SYSTEMS WHEN USED TO TRACE COUNTERFEITED SOFTWARE AND CONTENT YACOV YACOBI Abstract. We analyze how well forensic systems reduce counterfeiting of soft- ware the introduction of forensics (Ro) are non-zero then the payo¤ of forensics is independent of the overall market

422

Ecosystem dynamics at six contrasting sites: a generic modelling study  

Science Journals Connector (OSTI)

A pelagic marine ecosystem simulation model ERSEM-2004, developed from the European Regional Seas Ecosystem Model (ERSEM II), is presented along with a parameter set applicable to six highly contrasting sites, ranging from a temperate mixed shelf station to a permanently stratified tropical deep-ocean station. The physical characteristics are simulated by direct coupling to a 1D vertically resolved turbulence model, parameterised for each site. A mathematical description of the pelagic ecosystem model is presented. Additions to ERSEM II's well resolved community and decoupling of gross production and ambient nutrient concentration include variable carbon to chlorophyll ratios, coupling of bacterial production to nutrient availability, improved resolution of the organic particulate and dissolved fractions and developments to the mesozooplankton description. Comparison of seasonally depth resolved and integrated properties illustrates that the model produces a wide range of community dynamics and structures that can be plausibly related to variations in mixing, temperature, irradiance and nutrient supply. The spatial–temporal variability in key environmental indicators only partially correlates with the spatial–temporal variability in community structure (?0.75) between spatial–temporal variability in community structure (biomass) and function (production). ERSEM-2004 is shown to be a robust model that is capable of representing a range of systems commonly described in the marine system. Consequently, the model is proposed as a potential basis for an ecosystem-based management tool that may, with appropriate physical representation, be applied over large geographic and temporal scales with utility to both heuristic and predictive studies of the marine lower trophic levels.

J.C. Blackford; J.I. Allen; F.J. Gilbert

2004-01-01T23:59:59.000Z

423

Red tide detection and tracing using MODIS fluorescence data: A regional example in SW Florida coastal waters  

E-Print Network [OSTI]

Red tide detection and tracing using MODIS fluorescence data: A regional example in SW Florida-time data from the MODIS satellite sensor was used to detect and trace a harmful algal bloom (HAB), or red to interferences of other water constituents. The red tide that formed from November to December 2004 off SW

424

GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS, VOL. ???, XXXX, DOI:10.1029/, In-situ re-deposition of trace metals mobilized by  

E-Print Network [OSTI]

.1002/ggge.20104 #12;X - 2 WIGLEY ET AL.: TRACE METAL RE-DEPOSITION Abstract. Mobilization of contaminants by CO2-charged brines is one concern relating to injection of CO2 as part of carbon capture and storage of Green River, Utah (USA), where CO2- charged brines have bleached red sandstones, and concentrated trace

Boyer, Edmond

425

Oxidation of trace amounts of transplutonium elements to the tetravalent state in solutions of mineral acids and their stabilities  

SciTech Connect (OSTI)

The behavior of trace amounts of americium(IV) in sulfuric and nitric acid solutions as a function of the mineral acid, potassium phosphotungstate, and ammonium persulfate concentrations was investigated. The stability of americium(IV) was studied. The optimal conditions and time of oxidation of trace amounts of americium to the tetravalent state were found on the basis of the experimental data obtained.

Milyukova, M.S.; Varezhkina, N.S.; Kuzovkina, E.V.; Malikov, D.A.; Myasoedov, B.F.

1989-01-01T23:59:59.000Z

426

Chapter 6 - Resource (Land, Water, Nutrient, and Pesticide) Use and Efficiency of Corn and Sorghum  

Science Journals Connector (OSTI)

Crop resource use efficiency, defined as the ratio of crop output over input, has been an essential tool for crop selection. The objective of the review presented in this chapter was to compare corn and sorghum based on their land, water, nutrient, and pesticide use efficiencies. Data from corn and sorghum hybrid trials, herbicide performance trials, long-term fertilizer trials, and journal and extension papers were assembled for this comparison. Results indicated that about 6 Mg ha?1 is the cutoff value above which corn, and below which sorghum, has better land use efficiencies at equal net revenues. Based on relationships between evapotranspiration (ET) and yield described in the literature, about 537 mm of ET was found to be the cutoff above which corn, and below which sorghum, has better water use efficiencies. In rainfed production, approximately 432 mm of total seasonal rainfall (April to September) was the threshold value above which corn, and below which sorghum, has better rainfall use efficiencies on an average. Fertilizer use efficiency of corn was found to be greater than that of sorghum at all application rates, as long as water is not limiting. Preemergent pesticide application has increased yield up to 100% compared to untreated plots in both corn and sorghum. However, unlike corn, sorghum postemergent herbicides were either not available for some weed species, relatively more expensive, or not as effective as preemergent herbicide application. A preliminary estimate of the possible cutoff yield based on general net return from the two crop is presented.

Yared Assefa; Kraig Roozeboom; Curtis Thompson; Alan Schlegel; Loyd Stone; Jane E. Lingenfelser

2014-01-01T23:59:59.000Z

427

Nutrient removal efficiency and resource economics of vertical flow and horizontal flow constructed wetlands  

Science Journals Connector (OSTI)

In order to reduce the very high costs of sewage disposal in the new federal states of Germany, more decentralized purification systems need to be established. To attain higher surface water quality, and thereby the acceptance of such systems by governmental authorities, good removal rates for organic substances and also for nutrients (N, P) are necessary. Constructed wetlands for wastewater treatment (reed-bed systems) in Germany and in the USA have been used successfully. This study compares the purification performances of constructed horizontal flow wetlands (HFW) and vertical flow wetlands (VFW), including: (1) a small horizontal flow wetland (HFW); (2) a sloped HFW; (3) a larger HFW; (4) a stratified vertical flow wetland (VFW); and (5) an unstratified VFW. It is shown that both the horizontal flow and vertical flow systems can remove more than 90% of organic load and of total N and P, if there is an effective precleaning step, and if the specific treatment area is great enough (>50 m2/m3 per d). \\{HFWs\\} have an advantage in long-term removal of P because it is bound to organic substances to a high degree. Decentral and semicentral natural treatment systems also save material (76%) and energy (83%) for their function compared with central technical systems.

Volker Luederitz; Elke Eckert; Martina Lange-Weber; Andreas Lange; Richard M Gersberg

2001-01-01T23:59:59.000Z

428

Development of monitoring and control technology based on trace gas monitoring. Final report  

SciTech Connect (OSTI)

Trace gases are generated by many biological reactions. During anaerobic decomposition, trace levels of hydrogen (H{sub 2}) and carbon monoxide (CO) gases are produced. It was shown previously that these trace gases are intrinsically related to the biochemical reactions occurring and, therefore, offer promise for on-line process monitoring and control. This work was designed to test how effectively hydrogen and CO could be to monitor high-rate anaerobic systems that has significant mass transfer and complex hydraulics. An experimental program was designed to examine the behavior of an upflow anaerobic sludge blanket (UASB) reactor system under steady state and in response to organic loading perturbations. The responses of trace gases CO and H{sub 2} were tracked using an on-line, real-time gas-monitoring system linked to a computer-controlled data acquisition package. Data on conventional process parameters such as pH, chemical oxygen demand (COD), volatile fatty acids (VFAs) were concurrently collected. Monitoring of conventional process indicators (i.e., pH, VFA, gas production) and trace gas (H{sub 2} and CO) indicators was conducted using a matrix of nine different steady-state OLRs (4-23 kg COD/m{sup 3} -d) and system HRTs (0.5 to 2.5 days) was performed to determine any correlation among the indicators. Of OLR, HRT, and influent COD, only OLR had any significant influence on the process indicators examined. All parameters except methane increased with increases in OLR; methane decreased with increased OLR. The OLR and gas production rate (GP) were observed to be linearly correlated.

Liebowitz, B.

1997-07-01T23:59:59.000Z

429

Similarity of nutrient uptake and root dimensions of Engelmann spruce and subalpine fir at two contrasting sites in Colorado  

SciTech Connect (OSTI)

Nutrient uptake capacity is an important parameter in modeling nutrient uptake by plants. Researchers commonly assume that uptake capacity measured for a species can be used across sites. We tested this assumption by measuring the nutrient uptake capacity of intact roots of Engelmann spruce (Picea engelmanni Parry) and subalpine fir (Abies lasiocarpa (Hook.) Nutt.) at Loch Vale Watershed and Fraser Experimental Forest in the Rocky Mountains of central Colorado. Roots still attached to the tree were exposed to one of three concentrations of nutrient solutions for time periods ranging from 1 to 96 hours, and solutions were analyzed for ammonium, nitrate, calcium, magnesium, and potassium. Surprisingly, the two species were indistinguishable in nutrient uptake within site for all nutrients (P > 0.25), but uptake rates differed by site. In general, nutrient uptake was higher at Fraser (P = 0.01, 0.15, 0.03, 0.18 for NH{sub 4}{sup +}, NO{sub 3}{sup -}, Ca{sup 2+}, and K{sup +}, respectively), which is west of the Continental Divide and has lower atmospheric deposition of N than Loch Vale. Mean uptake rates by site for ambient solution concentrations were 0.12 {micro}mol NH{sub 4}{sup +} g{sub fwt}{sup -1} h{sup -1}, 0.02 {micro}mol NO{sub 3}{sup -} g{sub fwt}{sup -1}, 0.21 {micro}mol Ca{sup 2+} g{sub fwt}{sup -1} h{sup -1}, and 0.01 {micro}mol Mg{sup 2+} g{sub fwt}{sup -1} h{sup -1} at Loch Vale, and 0.21 {micro}mol NH{sub 4}{sup +} f{sub fwt}{sup -1}h{sup -1}, 0.04 {micro}mol NO{sub 3}{sup -} g{sub fwt}{sup -1} h{sup -1}, 0.51 {micro}mol Ca{sup 2+}g{sub fwt}{sup -1}h{sup -1}, and 0.07 {micro}mol Mg{sup 2+} f{sub fwt}{sup -1}h{sup -1} at Fraser. The importance of site conditions in determining uptake capacity should not be overlooked when parameterizing nutrient uptake models. We also characterized the root morphology of these two species and compared them to other tree species we have measured at various sites in the northeastern USA. Engelman spruce and subalpine fir were indistinguishable in specific root length and diameter distribution, while most of the other ten species had statistically distinct diameter distributions across five diameter classes < 2 mm. Based on specific root length, subalpine fir and Engelmann spruce had significantly coarser roots than red pine (Pinus resinosa Soland), yellow birch (Betula allegheniensis Britt.), sugar maple (Acer saccharum Marsh.), chestnut oak (Quercus prinus L.), black cherry (Prunus serotina Ehrh.), and red spruce (Picea rubens Sarg.). White oak (Quercus alba L.), balsam fir (Abies balsamea (L.) Mill.), American beech (Fagus grandifolia Ehrh.) and loblolly pine (Pinus taeda L.) were intermediate in SRL (indistinguishable from Engelmann spruce and subalpine fir by ANOVA). Species that differ more in physiology and morphology than the two species we compared would likely show dissimilar uptake characteristics even at the same site.

Yanai, R; McFarlane, K; Lucash, M; Kulpa, S; Wood, D

2009-10-09T23:59:59.000Z

430

$\\mathrm{CO_2}$ exploding clusters dynamics probed by XUV fluorescence  

E-Print Network [OSTI]

Clusters excited by intense laser pulses are a unique source of warm dense matter, that has been the subject of intensive experimental studies. The majority of those investigations concerns atomic clusters, whereas the evolution of molecular clusters excited by intense laser pulses is less explored. In this work we trace the dynamics of $\\mathrm{CO_2}$ clusters triggered by a few-cycle 1.45-$\\mu$m driving pulse through the detection of XUV fluorescence induced by a delayed 800-nm ignition pulse. Striking differences among fluorescence dynamics from different ionic species are observed.

Negro, M; Fabre, B; Dorchies, F; Devetta, M; Staedter, D; Vozzi, C; Mairesse, Y; Stagira, S

2014-01-01T23:59:59.000Z

431

Nutrient digestibility of 44% soybean meal, extruded whole soybeans, and an extruded soybean mixture for growing-finishing swine  

E-Print Network [OSTI]

To determine significant differences in nutrient digestibilities and nitrogen balance among soybean products, the data were treated as a repli- cated 3 X 3 Latin Square. A split-plot analysis of variance was used to compare ileal and total tract...NUiRIENT DIGESTIBILITY OF 44. ". - SOYBEAN NEAL, EX. RUDED NHOLE SOYBF~NS, AND . 4U EXTRUDED SOYBFAN MIXTURe FOR GROIYIUG- FINISHING SIYINE A Thesis by LYNNT: S. BOGGS Submitted to the Graduate College of Texas APM University 'n parti. ". 1...

Boggs, Lynne S.

1980-01-01T23:59:59.000Z

432

Essays in dynamic contracting  

E-Print Network [OSTI]

This thesis examines three models of dynamic contracting. The first model is a model of dynamic moral hazard with partially persistent states, and the second model considers relational contracts when the states are partially ...

Kwon, Suehyun

2012-01-01T23:59:59.000Z

433

Ultrafast dynamics of excitons in tetracene single crystals  

SciTech Connect (OSTI)

Ultrafast exciton dynamics in free standing 200 nm thin tetracene single crystals were studied at room temperature by femtosecond transient absorption spectroscopy in the visible spectral range. The complex spectrally overlapping transient absorption traces of single crystals were systematically deconvoluted. From this, the ultrafast dynamics of the ground, excited, and transition states were identified including singlet exciton fission into two triplet excitons. Fission is generated through both, direct fission of higher singlet states S{sub n} on a sub-picosecond timescale, and thermally activated fission of the singlet exciton S{sub 1} on a 40 ps timescale. The high energy Davydov component of the S{sub 1} exciton is proposed to undergo fission on a sub-picoseconds timescale. At high density of triplet excitons their mutual annihilation (triplet-triplet annihilation) occurs on a <10 ps timescale.

Birech, Zephania; Schwoerer, Heinrich, E-mail: heso@sun.ac.za [Laser Research Institute, Stellenbosch University, Stellenbosch 7600 (South Africa)] [Laser Research Institute, Stellenbosch University, Stellenbosch 7600 (South Africa); Schwoerer, Markus [Department of Physics, University of Bayreuth, Bayreuth (Germany)] [Department of Physics, University of Bayreuth, Bayreuth (Germany); Schmeiler, Teresa; Pflaum, Jens [Experimental Physics VI, University of Würzburg and Bavarian Center for Applied Energy Research, Würzburg (Germany)] [Experimental Physics VI, University of Würzburg and Bavarian Center for Applied Energy Research, Würzburg (Germany)

2014-03-21T23:59:59.000Z

434

Maps and inverse maps in open quantum dynamics  

SciTech Connect (OSTI)

Two kinds of maps that describe evolution of states of a subsystem coming from dynamics described by a unitary operator for a larger system, maps defined for fixed mean values and maps defined for fixed correlations, are found to be quite different for the same unitary dynamics in the same situation in the larger system. An affine form is used for both kinds of maps to find necessary and sufficient conditions for inverse maps. All the different maps with the same homogeneous part in their affine forms have inverses if and only if the homogeneous part does. Some of these maps are completely positive; others are not, but the homogeneous part is always completely positive. The conditions for an inverse are the same for maps that are not completely positive as for maps that are. For maps defined for fixed mean values, the homogeneous part depends only on the unitary operator for the dynamics of the larger system, not on any state or mean values or correlations. Necessary and sufficient conditions for an inverse are stated several different ways: in terms of the maps of matrices, basis matrices, density matrices, or mean values. The inverse maps are generally not tied to the dynamics the way the maps forward are. A trace-preserving completely positive map that is unital cannot have an inverse that is obtained from any dynamics described by any unitary operator for any states of a larger system.

Jordan, Thomas F., E-mail: tjordan@d.umn.ed [Physics Department, University of Minnesota, Duluth, MN 55812 (United States)

2010-10-15T23:59:59.000Z

435

Maps and inverse maps in open quantum dynamics  

E-Print Network [OSTI]

Two kinds of maps that describe evolution of states of a subsystem coming from dynamics described by a unitary operator for a larger system, maps defined for fixed mean values and maps defined for fixed correlations, are found to be quite different for the same unitary dynamics in the same situation in the larger system. An affine form is used for both kinds of maps to find necessary and sufficient conditions for inverse maps. All the different maps with the same homogeneous part in their affine forms have inverses if and only if the homogeneous part does. Some of these maps are completely positive; others are not, but the homogeneous part is always completely positive. The conditions for an inverse are the same for maps that are not completely positive as for maps that are. For maps defined for fixed mean values, the homogeneous part depends only on the unitary operator for the dynamics of the larger system, not on any state or mean values or correlations. Necessary and sufficient conditions for an inverse are stated several different ways: in terms of the maps of matrices, basis matrices, density matrices, or mean values. The inverse maps are generally not tied to the dynamics the way the maps forward are. A trace-preserving completely positive map that is unital can not have an inverse that is obtained from any dynamics described by any unitary operator for any states of a larger system.

Thomas F. Jordan

2008-07-08T23:59:59.000Z

436

Intramolecular and nonlinear dynamics  

SciTech Connect (OSTI)

Research in this program focuses on three interconnected areas. The first involves the study of intramolecular dynamics, particularly of highly excited systems. The second area involves the use of nonlinear dynamics as a tool for the study of molecular dynamics and complex kinetics. The third area is the study of the classical/quantum correspondence for highly excited systems, particularly systems exhibiting classical chaos.

Davis, M.J. [Argonne National Laboratory, IL (United States)

1993-12-01T23:59:59.000Z

437

Impact of resuspension of cohesive sediments at the Oyster Grounds (North Sea) on nutrient exchange across the sediment–water interface  

Science Journals Connector (OSTI)

Benthic-pelagic exchange processes are recognised as important nutrient sources in coastal areas, however, the relative impact of diffusion, resuspension and other processes such as bioturbation and ... are prese...

Fay Couceiro; Gary R. Fones; Charlotte E. L. Thompson; Peter J. Statham…

2013-05-01T23:59:59.000Z

438

The study of biomass yield and macromolecular content of microalgae change as a function of physiological state and nutrient supply conditions  

E-Print Network [OSTI]

biomass and macromolecular content, nutrient composition and physiological states, the optimal growth condition and maximum biomass and biofuel productivity can be achieved. The aim of this study was to determined how the biomass and macromolecular content...

Chen, Guo

2013-12-31T23:59:59.000Z

439

Chemical Structure and Dynamics annual report 1997  

SciTech Connect (OSTI)

The Chemical Structure and Dynamics (CS and D) program is a major component of the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL), developed by Pacific Northwest National Laboratory (PNNL) to provide a state-of-the-art collaborative facility for studies of chemical structure and dynamics. The authors respond to the need for a fundamental, molecular level understanding of chemistry at a wide variety of environmentally important interfaces by: (1) extending the experimental characterization and theoretical description of chemical reactions to encompass the effects of condensed media and interfaces; (2) developing a multidisciplinary capability for describing interfacial chemical processes within which the new knowledge generated can be brought to bear on complex phenomena in environmental chemistry and in nuclear waste processing and storage; and (3) developing state-of-the-art analytical methods for characterizing complex materials of the types found in stored wastes and contaminated soils, and for detecting and monitoring trace atmospheric species. The focus of the research is defined primarily by DOE`s environmental problems: fate and transport of contaminants in the subsurface environment, processing and storage of waste materials, cellular effects of chemical and radiological insult, and atmospheric chemistry as it relates to air quality and global change. Twenty-seven projects are described under the following topical sections: Reaction mechanisms at interfaces; High-energy processes at environmental interfaces; Cluster models of the condensed phase; and Miscellaneous.

Colson, S.D.; McDowell, R.S.

1998-03-01T23:59:59.000Z

440

Ray-Strips: A Compact Mesh Representation for Interactive Ray Tracing Christian Lauterbach1 Sung-Eui Yoon2 Dinesh Manocha1  

E-Print Network [OSTI]

Ray-Strips: A Compact Mesh Representation for Interactive Ray Tracing Christian Lauterbach1 Sung-Eui

North Carolina at Chapel Hill, University of

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Mycorrhizae and phosphorus fertilization effects on survival, growth, total biomass and leaf nutrient levels of two-year old Leucaena leucocephala  

E-Print Network [OSTI]

MYCORRHIZAE AND PHOSPHORUS FERTILIZATION EFFECTS ON SURVIVAL, GRONTH& TOTAL BIOMASS AND LEAF NUTRIENT LEVELS OF TWO-YEAR CLD LEUCAENA LEUCOCEPHALA A Thesis by DAVID KAHURIA MBUGUA Submitted to the Graduate College of Texas A&M University... in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1985 Major Subject: Forestry MYCORRHIZAE AND PHOSPHORUS FERTILIZATION EFFECTS ON SURVIVAL, GROWTH& TOTAL BIOMASS AND LEAF NUTRIENT LEVELS OF TWO-YEAR OLD LEUCAENA...

Mbugua, David Kahuria

2012-06-07T23:59:59.000Z

442

Effects of land use on surface–atmosphere exchanges of trace gases and energy in Borneo: comparing fluxes over oil palm plantations and a rainforest  

Science Journals Connector (OSTI)

...27 November 2011 research-article Articles...trace gases and energy in Borneo: comparing...boundary layer using a research aircraft in Sabah...exchange fluxes of energy and trace gases...Geophys. Res. Abstracts 12, EGU2010-15408...trace gases and energy in Borneo: comparing...

2011-01-01T23:59:59.000Z

443

3 - Mobile Robot Dynamics  

Science Journals Connector (OSTI)

Mobile robot dynamics is a challenging field on its own, especially due to the variety of the imposed constraints. Delicate stability and control problems that have very often to be faced are due to longitudinal or lateral slip, and to the features of the ground (roughness, etc.). This chapter has the following objectives: (i) to present the general dynamic modeling concepts and techniques of robots, (ii) to study the Newton–Euler and Lagrange dynamic models of differential-drive mobile robots, (iii) to study the dynamics of differential-drive mobile robots with longitudinal and lateral slip, (iv) to derive a dynamic model of car-like wheeled mobile robots, (v) to derive a dynamic model of three-wheel omnidirectional robots, and (vi) to derive a dynamic model of four-wheel mecanum omnidirectional robots.

Spyros G. Tzafestas

2014-01-01T23:59:59.000Z

444

AVESTAR® - Dynamic Modeling  

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

Dynamic Modeling Dynamic Modeling The AVESTAR team is pursuing research on the dynamic modeling and simulation of advanced energy systems ranging from power plants to power grids. Dynamic models provide a continuous view of energy systems in action by calculating their transient behavior over time. Plant-wide Models For power plants, dynamic models are used to analyze a wide variety of operating scenarios, including normal base load operation, startup, shutdown, feedstock switchovers, cycling, and load-following. Dynamic process and control models are also essential for analyzing plant responses to setpoint changes and disturbances, as well as malfunctions and abnormal situations. Other applications of plant-wide dynamic models include controllability and operational flexibility analyses, environmental studies, safety evaluations, and risk mitigation.

445

Dynamical friction in modified Newtonian dynamics  

E-Print Network [OSTI]

We have tested a previous analytical estimate of the dynamical friction timescale in Modified Newtonian Dynamics (MOND) with fully non-linear N-body simulations. The simulations confirm that the dynamical friction timescale is significantly shorter in MOND than in equivalent Newtonian systems, i.e. systems with the same phase-space distribution of baryons and additional dark matter. An apparent conflict between this result and the long timescales determined for bars to slow and mergers to be completed in previous N-body simulations of MOND systems is explained. The confirmation of the short dynamical-friction timescale in MOND underlines the challenge that the Fornax dwarf spheroidal poses to the viability of MOND.

C. Nipoti; L. Ciotti; J. Binney; P. Londrillo

2008-02-08T23:59:59.000Z

446

HPCT MPI Profiling and Tracing Library on BG/P Systems | Argonne Leadership  

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

MPI Profiling and Tracing Library on BG/P Systems MPI Profiling and Tracing Library on BG/P Systems References IBM System Blue Gene Solution: High Performance Computing Toolkit for Blue Gene/P - IBM Redbook describing HPCT and other performance tools Introduction The HPC Toolkit provides a mechanism for obtain information about the use of MPI routines during a programs execution. This is done through the use of a library which intercepts calls to MPI routines, records information about the call, and then continues with the MPI call. When the program terminates use of MPI by calling MPI_Finalize the data gathered by the library is written to one or more files in the program execution directory. The the primary types of information that are gathered and writen by the library are: MPI Profile Data- A summary of MPI usage information typically

447

Tax Deduction Qualified Software TRACE 700 version 6.3.0  

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

3.0 3.0 On this page you'll find information about the TRACE 700 version 6.3.0 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings. Date Documentation Received by DOE: 11 September 2013 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements as amplified by Notice 2008-40, Section 4 requirements. (1) The name, address, and (if applicable) web site of the software developer; Trane 3600 Pammel Creek Road La Crosse, WI 54601 http://www.trane.com/trace (2) The name, email address, and telephone number of the person to contact for

448

Trace Element Analysis At Long Valley Caldera Area (Klusman & Landress,  

Open Energy Info (EERE)

Klusman & Landress, Klusman & Landress, 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Trace Element Analysis At Long Valley Caldera Area (Klusman & Landress, 1979) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Trace Element Analysis Activity Date Usefulness useful DOE-funding Unknown Notes This study involved the field collection and laboratory analysis of Al-horizon soil samples in the vicinity of a known geothermal source at Long Valley, California. The samples were analyzed for several constituents known to have influence on Hg retention by soils, including pH, hydrous Fe and Mn, and organic carbon, as well as Hg. The data compiled for these secondary parameters and the field-determined parameters of geology, soil

449

Microsoft Word - qs_trace-700_v6-2-4.docx  

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

2.4 2.4 On this page you'll find information about the TRACE 700 version 6.2.4 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings. Date Documentation Received by DOE: 4 November 2009 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements as amplified by Notice 2008-40, Section 4 requirements. (1) The name, address, and (if applicable) web site of the software developer; Trane 3600 Pammel Creek Road La Crosse, WI 54601 http://www.trane.com/trace (2) The name, email address, and telephone number of the person to contact for

450

Tracing Aerosol Impacts on South Asian Monsoons | U.S. DOE Office of  

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

Science Highlights » 2013 Science Highlights » 2013 » Tracing Aerosol Impacts on South Asian Monsoons Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » September 2013 Tracing Aerosol Impacts on South Asian Monsoons The effect of pollution aerosols on monsoons. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

451

Investigation on thermal and trace element characteristics during co-combustion biomass with coal gangue  

Science Journals Connector (OSTI)

Abstract The thermochemical behaviors during co-combustion of coal gangue (CG), soybean stalk (SS), sawdust (SD) and their blends prepared at different ratios have been determined via thermogravimetric analysis. The simulate experiments in a fixed bed reactor were performed to investigate the partition behaviors of trace elements during co-combustion. The combustion profiles of biomass was more complicated than that of coal gangue. Ignition property and thermal reactivity of coal gangue could be enhanced by the addition of biomass. No interactions were observed between coal gangue and biomass during co-combustion. The volatilization ratios of trace elements decrease with the increasing proportions of biomass in the blends during co-combustion. Based on the results of heating value, activation energy, base/acid ratio and gaseous pollutant emissions, the blending ratio of 20–30% biomass content is regarded as optimum composition for blending and could be applied directly at current combustion application with few modifications.

Chuncai Zhou; Guijian Liu; Ting Fang; Paul Kwan Sing Lam

2015-01-01T23:59:59.000Z

452

Tax Deduction Qualified Software: Trace 700 version 6.2.10  

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

2.10 2.10 On this page you'll find information about the TRACE 700 version 6.2.10 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings. Date Documentation Received by DOE: 11 March 2013 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements as amplified by Notice 2008-40, Section 4 requirements. (1) The name, address, and (if applicable) web site of the software developer; Trane 3600 Pammel Creek Road La Crosse, WI 54601 http://www.trane.com/trace (2) The name, email address, and telephone number of the person to contact for

453

Beyond scientific research: tracing the contributions Ernest Rutherford made to the next generation of scientists  

E-Print Network [OSTI]

BEYOND SCIENTIFIC RESEARCH: TRACING THE CONTRIBUTIONS ERNEST RUTHERFORD MADE TO THE NEXT GENERATION OF SCIENTISTS A Thesis by ANDREW A. ARMSTRONG Submitted to the Office of Graduate Studies of Texas A&M University in partial... GENERATION OF SCIENTISTS A Thesis by ANDREW A. ARMSTRONG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair...

Armstrong, Andrew A.

2006-08-16T23:59:59.000Z

454

Stein's method, heat kernel, and traces of powers of elements of compact Lie groups  

E-Print Network [OSTI]

Combining Stein's method with heat kernel techniques, we show that the trace of the jth power of an element of U(n,C), USp(n,C) or SO(n,R) has a normal limit with error term of order j/n. In contrast to previous works, here j may be growing with n. The technique should prove useful in the study of the value distribution of approximate eigenfunctions of Laplacians.

Jason Fulman

2010-05-07T23:59:59.000Z

455

Extractable trace elements in the soil profile after years of biosolids application  

SciTech Connect (OSTI)

The US Environmental Protection Agency (USEPA) and some state agencies regulate trace element additions to soil from land application of biosolids. The authors generally consider trace elements added in biosolids (sewage sludge) to accumulate in the soil surface without significant transport below the plow layer. They used 11 yr of field-study information from biosolids addition to dryland hard red winter wheat (Triticum aestivum L. Vona or TAM107) to determine the distribution of NH{sub 4}HCO{sub 3} diethylenetriaminepentaacetic acid (AB-DTPA)-extractable Cd, Cr, Cu, Mo, Ni, Pb, and Zn in 0 to 20 (plow layer), 20 to 60, 60 to 100, and 100 to 150 cm depth increments. This study is unique since it involves multiple biosolids application in a dryland summer fallow agroecosystem. The authors applied five or six applications of biosolids from the cities of Littleton and Englewood, CO, to Weld loam or Platner loam at four locations. This paper focuses on the 0 (control), the 56 or 67 kg of N ha{sup {minus}1} fertilizer rates, and the 6.7 and 26.8 dry Mg of biosolids ha{sup {minus}1} rates that they added every crop year. The authors observed significant (P < 0.10) accumulations of the trace elements in the plow layer of the biosolids-amended soils. Only Zn showed consistent increases in extractable levels below the plow layer at all four sites. The biosolids Zn concentration was larger than any other trace element resulting in larger loading of this element.

Barbarick, K.A.; Ippolito, J.A.; Westfall, D.G. [Colorado State Univ., Fort Collins, CO (United States). Dept. of Soil and Crop Sciences

1998-07-01T23:59:59.000Z

456

Autonomous Water Sampling for Long-Term Monitoring of Trace Metals in Remote Environments  

Science Journals Connector (OSTI)

Autonomous Water Sampling for Long-Term Monitoring of Trace Metals in Remote Environments ... Over 30 days of storage, samples with GFS treatment had average recoveries of 95 ± 19% and 105 ± 7% of Fe and Mn, respectively; without GFS treatment, average recoveries were only 16% and 18%. ... To rinse the tubing before the sampling, the autosampler pumps water for 12 s to a draining waste bottle (bottle position 12). ...

Hyojin Kim; James K. B. Bishop; Todd J. Wood; Inez Y. Fung

2012-09-28T23:59:59.000Z

457

Semiclassical trace formulae using coherent states Bernhard Mehlig1;* and Michael Wilkinson2  

E-Print Network [OSTI]

Complex Systems, Physics & Engineering Physics, Chalmers TH/GU. SE-41295 Gothenburg, Sweden 2 Faculty. It is certainly a powerful and fundamen- Ann. Phys. (Leipzig) 10 (2001) 6­­7, 541­­559 * mehlig@fy.chalmers.se #12 ­­ and may be thought of as wave packets positioned at the phase-space point a. The trace of any operator may

Wilkinson, Michael

458

Laser ray tracing in a parallel arbitrary Lagrangian-Eulerian adaptive mesh refi  

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

ray tracing in a parallel arbitrary Lagrangian-Eulerian adaptive mesh refinement ray tracing in a parallel arbitrary Lagrangian-Eulerian adaptive mesh refinement hydrocode This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2010 J. Phys.: Conf. Ser. 244 032022 (http://iopscience.iop.org/1742-6596/244/3/032022) Download details: IP Address: 50.136.219.251 The article was downloaded on 18/04/2013 at 01:39 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 Laser Ray Tracing in a Parallel Arbitrary Lagrangian-Eulerian Adaptive Mesh Refinement Hydrocode N D Masters 1 , T B Kaiser 1 , R W Anderson 1 , D C Eder 1 , A C Fisher 1 , A E Koniges 2 1 Lawrence Livermore National Laboratory, Livermore, CA U.S.A. 2 National

459

Correlations of trace elements in breast human tissues: Evaluation of spatial distribution using {mu}-XRF  

SciTech Connect (OSTI)

The aim of this work is to investigate microscopic correlations between trace elements in breast human tissues. A synchrotron X-ray fluorescence microprobe system ({mu}-XRF) was used to obtain two-dimensional distribution of trace element Ca, Fe, Cu and Zn in normal (6 samples) and malignant (14 samples) breast tissues. The experiment was performed in X-ray Fluorescence beam line at Laboratorio Nacional de Luz Sincrotron (LNLS), Campinas, Brazil. The white microbeam was generated with a fine conical capillary with a 20 {mu}m output diameter. The samples were supported on a XYZ table. An optical microscope with motorized zoom was used for sample positioning and choice the area to be scanned. Automatic two-dimensional scans were programmed and performed with steps of 30 {mu}m in each direction (x, y) on the selected area. The fluorescence signals were recorded using a Si(Li) detector, positioned at 90 degrees with respect to the incident beam, with a collection time of 10 s per point. The elemental maps obtained from each sample were overlap to observe correlation between trace elements. Qualitative results showed that the pairs of elements Ca-Zn and Fe-Cu could to be correlated in malignant breast tissues. Quantitative results, achieved by Spearman correlation tests, indicate that there is a spatial correlation between these pairs of elements (p < 0.001) suggesting the importance of these elements in metabolic processes associated with the development of the tumor.

Piacenti da Silva, Marina; Silva, Deisy Mara da; Ribeiro-Silva, Alfredo; Poletti, Martin Eduardo [Departamento de Fisica, FFCLRP/USP, Av. dos Bandeirantes n. 3900, 14040-901 Ribeirao Preto - SP (Brazil); Departamento de Patologia, HCFM/USP, Av. dos Bandeirantes n. 3900, 14040-901 Ribeirao Preto - SP (Brazil); Departamento de Fisica, FFCLRP/USP, Av. dos Bandeirantes n. 3900, 14040-901 Ribeirao Preto - SP (Brazil)

2012-05-17T23:59:59.000Z

460

TRACE Model for Simulation of Anticipated Transients Without Scram in a BWR  

SciTech Connect (OSTI)

A TRACE model has been developed for using theTRACE/PARCS computational package [1, 2] to simulate anticipated transients without scram (ATWS) events in a boiling water reactor (BWR). The model represents a BWR/5 housed in a Mark II containment. The reactor and the balance of plant systems are modeled in sufficient detail to enable the evaluation of plant responses and theeffectiveness of automatic and operator actions tomitigate this beyond design basis accident.The TRACE model implements features thatfacilitate the simulation of ATWS events initiated by turbine trip and closure of the main steam isolation valves (MSIV). It also incorporates control logic to initiate actions to mitigate the ATWS events, such as water levelcontrol, emergency depressurization, and injection of boron via the standby liquid control system (SLCS). Two different approaches have been used to model boron mixing in the lower plenum of the reactor vessel: modulate coolant flow in the lower plenum by a flow valve, and use control logic to modular.

Cheng L. Y.; Baek J.; Cuadra,A.; Aronson, A.; Diamond, D.; Yarsky, P.

2013-11-10T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Method for migrating seismic data by using ray tracing in determining two way travel times  

SciTech Connect (OSTI)

A method is described for depth migrating ray traces before stacking comprising the steps of: receiving raw seismic data signals representing acoustic waves generated by a plurality of sources and detected by a plurality of receivers, each of said sources and said receivers having a surface position; generating a set of one way travel times for each surface position to all image points; storing said one way travel times; identifying a set of one way travel times from one source surface position to each of said image points; identifying a second set of one way travel times from one receiver surface position to each of said image points; calculating a two way travel time set to said image points by summing said set of one way travel times for said one source surface position and said second set of one way travel times for said one receiver surface position to each of said image points; mapping a seismic trace associated with a source and receiver combination represented by said two way travel time set; and displaying said map of said seismic trace associated with said source and receiver combination.

Wang, Sheinshion; Sinton, J.B.; Hanson, D.W.

1993-07-20T23:59:59.000Z

462

Laser Based Techniques for Ultra Trace Isotope Production, Spectroscopy and Detection  

SciTech Connect (OSTI)

A variety of research activities in the field of fundamental and applied nuclear physics has evolved in the last years using resonantly tuned radiation from powerful lasers. The technique of resonance ionization spectroscopy has delivered outstanding results and found broad acceptance in the last years as a particularly efficient and highly selective method for rare and exotic radioisotope studies. It is used for production, spectroscopy and detection of these species and provides complete isobaric, high isotopic and even some isomeric selection, which altogether is needed for on-line investigation of short lived species far off stability as well as for ultra trace determination. Good overall efficiency pushes the experimental limits of detection in elemental trace analysis down to below 106 atoms per sample, and additionally isotopic selectivity as high as 3 ? 1012 has been demonstrated. The widespread potential of resonance ionization techniques is discussed, focusing on the experimental arrangements for applications in selective on-line isotope production, spectroscopy of rare radioisotopes and ultra trace determination of radiotoxic isotopes like 238Pu to 244Pu, 135,137Cs, 89,90Sr or 41Ca in environmental, technical and biomedical samples.

Wendt, K.; Blaum, K; Geppert, C; Muller, P; Nortershauser, W.; Schmitt, Annette; Schumann, P; Trautmann, Norbert; Bushaw, Bruce A.

2006-06-26T23:59:59.000Z

463

1988 Pilot Institute on Global Change on trace gases and the biosphere  

SciTech Connect (OSTI)

This proposal seeks multi-agency funding to conduct an international, multidisciplinary 1988 Pilot Institute on Global Change to take place from August 7 through 21, 1988, on the topic: Trace Gases and the Biosphere. The institute, to be held in Snowmass, Colorado, is envisioned as a pilot version of a continuing series of institutes on Global Change (IGC). This proposal seeks support for the 1988 pilot institute only. The concept and structure for the continuing series, and the definition of the 1988 pilot institute, were developed at an intensive and multidisciplinary Summer Institute Planning Meeting in Boulder, Colorado, on August 24--25, 1987. The theme for the 1988 PIGC, Trace Gases and the Biosphere, will focus a concerted, high-level multidisciplinary effort on a scientific problem central to the Global Change Program. Dramatic year-to-year increases in the global concentrations of radiatively-active trace gases such as methane and carbon dioxide are now well documented. The predicted climatic effects of these changes lend special urgency to efforts to study the biospheric sources and sinks of these gases and to clarify their interactions and role in the geosphere-biosphere system.

Eddy, J.A.; Moore, B. III

1998-07-01T23:59:59.000Z

464

Comparison of an impedance heating system to mineral insulated heat trace for power tower applications  

SciTech Connect (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI heat trace. The authors found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1997-03-01T23:59:59.000Z

465

Fine root dynamics in a developing Populus deltoides plantation.  

SciTech Connect (OSTI)

A closely spaced (1 x 1 m) cottonwood (Populus deltoides Bartr.) platation was established to evaluate the effects of nutrient availability on fine root dynamics. Slow-release fertilizer (17:6:12 N,P,K plus micronutrients) was applied to 225-m2 plots at 0, 50, 100, 200 kg N ha-1, and plots were monitored for two growing seasons. Fine root production, mortality, live root standing crop and life span were analyzed based on monthly minirhizotron observations. Fine root biomass was measured in soil cores. Fine root dynamics were controlled more by temporal, depth and root diameter factors than by fertilization. Cumulative fine root production and mortality showed strong seasonal patterns; production was greatest in the middle of the growing season and mortality was greatest after the grwoing season. Small diameter roots at shallow soil depths cycled more rapidly than large or deeper roots. The strongest trearment effects were found in the most rapidly cycling roots. The standing crop of live roots increased with fertilizer treatment according to both minirhizotron and soil coring methods. However, production and mortality had unique treatment response patterns. Although cumulative mortality decreased in response to increased fertilization, cumulative production was intermediate at 0 kg N ha-1, lowest with 50 kg N ha-1, and highest with 200 kg N ha-1. Above ground growth responded positively to fertilization up to an application rate of 50 kg N ha-1 but no further increase in application rate. Median fine root life span varied from 307 to over 700 day and increased with depth, diameter and nutrient availability.

Kern, Christel C.; Friend, Alexander L.; Johnson, Jane M.; Coleman, Mark D.

2004-07-01T23:59:59.000Z

466

Improving Cotton Embryo Culture by Simulating In Ovulo Nutrient and Hormone Levels  

SciTech Connect (OSTI)

Plant ovules provide zygotes with a physicochemical environment that supports embryo differentiation, growth, and maturation. The exact nature of this embryogenesis-enabling environment is not well characterized, as evidenced by failed attempts to induce normal embryony from zygotes or proembryos (precotyledonary) on defined media. To identify factors required for cotton (Gossypium hirsutum L.) zygotic embryony in vitro, we previously performed chemical and dissolved oxygen tension analyses of cotton ovule fluids and tissues at multiple stages of embryony in situ. Based on these analyses, we report herein the development of procedures that normalize embryo differentiation, growth, maturation, and germination in vitro, starting with proembryos. Our medium differed from Murashige and Skoog (MS) medium as follows (percentage of MS): N (30%, mostly from ten amino acids), P (815%), K (237%), Mg (85%), Ca (267%), S (506%), Fe (88%), and myoinositol (883%). Levels of other MS nutrients and vitamins, except sucrose, were kept at MS levels. Additionally, we included 100 mg L-1 casein hydrolysate plus the following (mmol L-1): d-glucose (1.8), fructose (4.7), sucrose (62.0), arabinose (7.1), melibiose (3.5), malic acid (11.6), and citric acid (3.8). Mannitol was added to achieve a medium osmotic potential of -1.10 MPa, and an atmospheric O2 tension of 3.3 mol m-3 at the surface of embryos was maintained during culture. When cultured on medium containing 8.0 µmol L-1 indole-3-acetic acid, 80-90% of proembryos (as small as 100 cells) of cultivars HS-26 and B-27 increased four- to eightfold in surface area during the first 18 d in culture and germinated thereafter to produce viable plants. Increases in surface area of proembryos cultured on a modified MS medium previously used for somatic embryogenesis were from 0.2- to 0.6-fold. The described embryo culture medium should be useful for studying nutritional and molecular aspects of early embryony and possibly for plant zygote transformation protocols.

Rodney Fuller; Vincent Liddiard; J. Hess; John Carman

2011-06-01T23:59:59.000Z

467

Comparative Cost Analysis of Alternative Animal Tracing Strategies Directed Toward Foot and Mouth Disease Outbreaks in the Texas High Plains  

E-Print Network [OSTI]

with animal ID, then there are specific manufacturers that produce AIN devices including visual tags, RFID tags, and injectable transponders. The last step for NAIS is animal tracing. Animal tracking databases (ATD) that are maintained by the states...

Looney, John C.

2010-07-14T23:59:59.000Z

468

Pulsed quantum cascade laser instrument with compact design for rapid, high sensitivity measurements of trace gases in air  

Science Journals Connector (OSTI)

We have developed a compact instrument for sensitive, rapid and continuous measurement of trace gases in air, with results presented here for methane (CH4), nitric oxide (NO), nitrous oxide (N2O) and ammonia (NH3

J.B. McManus; J.H. Shorter; D.D. Nelson; M.S. Zahniser; D.E. Glenn…

2008-09-01T23:59:59.000Z

469

Suppression of Nitrogen Fixation by Blue-Green Algae in a Eutrophic Lake with Trace Additions of Copper  

Science Journals Connector (OSTI)

...of the main water mass, could experience...current ecological balance away from Aphanizomenon...sewage N by advanced wastewater treatment. Both wastewater treatment and trace Cu addition...Kamp-Nielson, Physiol. Plant. 23, 828 (1970...

Alexander J. Horne; Charles R. Goldman

1974-02-01T23:59:59.000Z

470

Do trace metals (chromium, copper, and nickel) influence toxicity of diesel fuel for free-living marine nematodes?  

Science Journals Connector (OSTI)

The objective of this study was to test the hypotheses that (1) free-living marine nematodes respond in a differential way to diesel fuel if it is combined with three trace ... (2) the magnitude of toxicity of di...

Amor Hedfi; Fehmi Boufahja; Manel Ben Ali…

2013-06-01T23:59:59.000Z

471

Minor and Trace Element Determination of Food Spices and Pulses of Different Origins by NAA and PAA  

Science Journals Connector (OSTI)

INAA, RNAA and IPAA were employed to determine upto 26 trace elements in 32 spices of 18 species and 16 pulses of 8 species originating from different localities. The results are compared with each other and t...

Y. Miyamoto; A. Kajikawa; J. H. Zaidi…

2000-03-01T23:59:59.000Z

472

Trace element mobility during sub-seafloor alteration of basaltic glass from Ocean Drilling Program site 953 (off Gran Canaria)  

Science Journals Connector (OSTI)

Trace element concentrations of altered basaltic glass shards (layer silicates) and zeolites in volcaniclastic sediments drilled in the volcanic apron northeast of Gran Canaria during Ocean Drilling Program (ODP)...

A. Utzmann; T. Hansteen; H.-U. Schmincke

2002-08-01T23:59:59.000Z

473

Multi-physics coupled code reactor analysis with the U.S. NRC code system TRACE/PARCS  

SciTech Connect (OSTI)

This paper will focus on the PARCS code and some of the recent applications of the coupled TRACE/PARCS codes to OECD LWR benchmarks and to the Advanced CANDU Reactor, the ACR-700. (authors)

Xu, Y.; Downar, T.; Ward, A. [Purdue Univ. (United States); Kozlowski, T. [KTH, Nuclear Power Safety (Sweden); Ivanov, K. [Penn State Univ. (United States)

2006-07-01T23:59:59.000Z

474

Chemical Structure and Dynamics  

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

2154-3 2154-3 UC-400 Annual Report 2000 Chemical Structure and Dynamics Steven D. Colson, Associate Director Robin S. McDowell, Program Manager and the Staff of the Chemical Structure and Dynamics Program April 2001 Prepared for the U.S. Department of Energy under Contract DE-AC06-76RL01830 Chemical Structure and Dynamics 2000 Annual Report Contents Chemical Structure and Dynamics 2000 Annual Report Chemical Structure and Dynamics 2000 Annual Report 1. Introduction Chemical Structure and Dynamics Program......................................................... 1-3 2. Reaction Mechanisms at Liquid Interfaces Structure and Reactivity of Ice Surfaces and Interfaces G. A. Kimmel, Z. Dohnálek, K. P. Stevenson, R. S. Smith,

475

Regional-scale chemical transport modeling in support of the analysis of observations obtained during the TRACE-P experiment  

E-Print Network [OSTI]

during the TRACE-P experiment G. R. Carmichael,1 Y. Tang,1 G. Kurata,3 I. Uno,2 D. Streets,4 J.-H. Woo,1 H. Huang,1 J. Yienger,1 B. Lefer,5 R. Shetter,5 D. Blake,6 E. Atlas,5 A. Fried,5 E. Apel,5 F. Eisele the TRACE-P experiment is used to evaluate how well the CFORS/STEM-2K1 regional-scale chemical transport

Clarke, Antony

476

Trace and ultratrace metals in bottled waters: Survey of sources worldwide and comparison with refillable metal bottles  

Science Journals Connector (OSTI)

Bottled waters from diverse natural and industrial sources are becoming increasingly popular worldwide. Several potentially harmful trace metals (Ag, Be, Li, Ge, Sb, Sc, Te, Th, U) are not monitored regularly in such waters. As a consequence, there is extremely limited data on the abundance and potential health impacts of many potentially toxic trace elements. Containers used for the storage of bottled waters might also increase trace metal levels above threshold limits established for human consumption by the EPA or WHO. Applying strict clean room techniques and sector field ICP–MS, 23 elements were determined in 132 brands of bottled water from 28 countries. In addition, leaching experiments with high purity water and various popular metal bottles investigated the release of trace metals from these containers. The threshold limits for elements such as Al, Be, Mn and U in drinking water were clearly exceeded in some waters. Several bottled waters had Li concentrations in the low mg/L range, a level which is comparable to blood plasma levels of patients treated against manic depression with Li-containing drugs. The rate of release of trace metals from metal bottles assessed after 13 days was generally low, with one exception: Substantial amounts of both Sb and Tl were released from a commercially available pewter pocket flask, exceeding international guidelines 5- and 11-fold, respectively. Trace metal levels of most bottled waters are below guideline levels currently considered harmful for human health. The few exceptions that exist, however, clearly reveal that health concerns are likely to manifest through prolonged use of such waters. The investigated coated aluminium and stainless steel bottles are harmless with respect to leaching of trace metals into drinking water. Pocket flasks, in turn, should be selected with great care to avoid contamination of beverages with harmful amounts of potentially toxic trace metals such as Sb and Tl.

Michael Krachler; William Shotyk

2009-01-01T23:59:59.000Z

477

Dynamic Instruction Fusion  

E-Print Network [OSTI]

SANTA CRUZ DYNAMIC INSTRUCTION FUSION A thesis submitted in4 2.2 Instruction Fusion & Complex10 3.1 Fusion Selection

Lee, Ian

2012-01-01T23:59:59.000Z

478

Accelerated Molecular Dynamics Methods  

Broader source: Energy.gov [DOE]

This presentation on Accelerated Molecular Dynamics Methods was given at the DOE Theory Focus Session on Hydrogen Storage Materials on May 18, 2006.

479

Degradation of polychlorinated biphenyl mixtures in soil using phanerochaete chrysosporium in nutrient rich, non-ligninolytic conditions  

DOE Patents [OSTI]

Substantial degradation of polychlorinated biphenyl (PCB) mixtures is carried out using the white rot fungus Phanerochaete chrysosporium, under nutrient, carbon and nitrogen source rich, non-ligninolytic conditions. The PCBs with various numbers of ortho, meta, and para chlorines were extensively degraded, indicating relative nonspecificity for the position of chlorine substitutions on the biphenyl ring. Maximal degradation of PCBs in a mixture was observed in malt extract medium (18.4% on a molar basis), in which most of the individual PCBs were degraded.

Yadav, Jagjit S. (Cincinnatti, OH); Reddy, Chilekampalli A. (East Lansing, MI); Quensen, John F. (Haslett, MI); Tiedje, James M. (Lansing, MI)

2000-01-01T23:59:59.000Z

480

An investigation of the sub-grid variability of trace gases and aerosols for global climate modeling  

SciTech Connect (OSTI)

One fundamental property and limitation of grid based models is their inability to identify spatial details smaller than the grid cell size. While decades of work have gone into developing sub-grid treatments for clouds and land surface processes in climate models, the quantitative understanding of sub-grid processes and variability for aerosols and their precursors is much poorer. In this study, WRF-Chem is used to simulate the trace gases and aerosols over central Mexico during the 2006 MILAGRO field campaign, with multiple spatial resolutions and emission/terrain scenarios. Our analysis focuses on quantifying the sub-grid variability (SGV) of trace gases and aerosols within a typical global climate model grid cell, i.e. 75x75 km2. Our results suggest that a simulation with 3-km horizontal grid spacing adequately reproduces the overall transport and mixing of trace gases and aerosols downwind of Mexico City, while 75-km horizontal grid spacing is insufficient to represent local emission and terrain-induced flows along the mountain ridge, subsequently affecting the transport and mixing of plumes from nearby sources. Therefore, the coarse model grid cell average may not correctly represent aerosol properties measured over polluted areas. Probability density functions (PDFs) for trace gases and aerosols show that secondary trace gases and aerosols, such as O3, sulfate, ammonium, and nitrate, are more likely to have a relatively uniform probability distribution (i.e. smaller SGV) over a narrow range of concentration values. Mostly inert and long-lived trace gases and aerosols, such as CO and BC, are more likely to have broad and skewed distributions (i.e. larger SGV) over polluted regions. Over remote areas, all trace gases and aerosols are more uniformly distributed compared to polluted areas. Both CO and O3 SGV vertical profiles are nearly constant within the PBL during daytime, indicating that trace gases are very efficiently transported and mixed vertically by turbulence. But, simulated horizontal variability indicates that trace gases and aerosols are not well mixed horizontally in the PBL. During nighttime the SGV for trace gases is maximum at the surface, and quickly decreases with height. Unlike the trace gases, the SGV of BC and secondary aerosols reaches a maximum at the PBL top during the day. The SGV decreases with distance away from the polluted urban area, has a more rapid decrease for long-lived trace gases and aerosols than for secondary ones, and is greater during daytime than nighttime. The SGV of trace gases and aerosols is generally larger than for meteorological quantities. Emissions can account for up to 50% of the SGV over urban areas such as Mexico City during daytime for less-reactive trace gases and aerosols, such as CO and BC. The impact of emission spatial variability on SGV decays with altitude in the PBL and is insignificant in the free troposphere. The emission variability affects SGV more significantly during daytime (rather than nighttime) and over urban (rather than rural or remote) areas. The terrain, through its impact on meteorological fields such as wind and the PBL structure, affects dispersion and transport of trace gases and aerosols and their SGV.

Qian, Yun; Gustafson, William I.; Fast, Jerome D.

2010-07-29T23:59:59.000Z

Note: This page contains sample records for the topic "nutrient dynamics trace" 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

Seminar N 03301, Dynamically  

E-Print Network [OSTI]

Seminar Nº 03301, Dynamically Reconfigurable Architectures A Mead-&-Conway-like Break ·Ametek ·Applied Dynamics ·Astronautics ·BBN ·CDC ·Convex ·Cray Computer ·Cray Research ·Culler-Harris

Hartenstein, Reiner

482

Photosynthesis in Dynamic Animations  

Science Journals Connector (OSTI)

Photosynthesis in Dynamic Animations ... To support chemistry instruction in high school we created a series of interactive animations that show photosynthetic processes in a eukaryotic cell. ... The example from the educational program “Photosynthesis in Dynamic Animations”, the description of photosynthetic cell. ...

Milada Teplá; Helena Klímová

2013-10-09T23:59:59.000Z

483

Evaluation of preservation methods for selected nutrients in ground water at the Idaho National Engineering Laboratory, Idaho  

SciTech Connect (OSTI)

Water from 28 wells completed in the Snake River Plain aquifer at the Idaho National Engineering Laboratory (INEL) was sampled as part of the US Geological Survey`s quality-assurance program to determine the effect of different preservation methods on nutrient concentrations. Samples were preserved with filtration and with mercuric chloride and chilling, chilling only, or sulfuric acid and chilling. The samples were analyzed for ammonia, nitrite, nitrite plus nitrate, and orthophosphate by the US Geological Survey National Water Quality Laboratory. The study was done in cooperation with the US Department of Energy. The comparison between samples preserved with mercuric chloride and chilling and samples preserved by chilling only showed that all sample pairs were in statistical agreement. Results for ammonia and nitrite plus nitrate samples preserved with sulfuric acid and chilling were within the 95 percent confidence level of the results for the samples preserved by the other two methods and can be considered equivalent to them. Results of this study indicate that discontinuing the use of mercuric chloride as a preservation method for nutrients in water samples will not affect the comparability of data collected at the INEL before and after October 1, 1994.

Bartholomay, R.C.; Williams, L.M.

1996-10-01T23:59:59.000Z

484

Application of synchrotron radiation to x-ray fluorescence analysis of trace elements  

SciTech Connect (OSTI)

The development of synchrotron radiation x-ray sources has provided the means to greatly extend the capabilities of x-ray fluorescence analysis for determinations of trace element concentrations. A brief description of synchrotron radiation properties provides a background for a discussion of the improved detection limits compared to existing x-ray fluorescence techniques. Calculated detection limits for x-ray microprobes with micrometer spatial resolutions are described and compared with experimental results beginning to appear from a number of laboratories. The current activities and future plans for a dedicated x-ray microprobe beam line at the National Synchrotron Light Source (NSLS) of Brookhaven National Laboratory are presented.

Gordon, B.M.; Jones, K.W.; Hanson, A.L.

1986-08-01T23:59:59.000Z

485

Ray tracing of ion-cyclotron waves in a coronal funnel  

E-Print Network [OSTI]

Remote observations of coronal holes have strongly implicated the kinetic interactions of ion-cyclotron waves with ions as a principal mechanism for plasma heating and acceleration of the fast solar wind. In order to study these waves, a linear perturbation analysis is used in the work frame of the collisionless multi-fluid model. We consider a non-uniform background plasma describing a funnel region and use the ray tracing equations to compute the ray path of the waves as well as the spatial variation of their properties.

R. Mecheri; E. Marsch

2007-06-07T23:59:59.000Z

486

Ray tracing of ion-cyclotron waves in a coronal funnel  

E-Print Network [OSTI]

Remote observations of coronal holes have strongly implicated the kinetic interactions of ion-cyclotron waves with ions as a principal mechanism for plasma heating and acceleration of the fast solar wind. In order to study these waves, a linear perturbation analysis is used in the work frame of the collisionless multi-fluid model. We consider a non-uniform background plasma describing a funnel region and use the ray tracing equations to compute the ray path of the waves as well as the spatial variation of their properties.

Mecheri, R

2007-01-01T23:59:59.000Z

487

Using a scalar parameter to trace dislocation evolution in atomistic modeling  

SciTech Connect (OSTI)

A scalar gamma-parameter is proposed from the Nye tensor. Its maximum value occurs along a dislocation line, either straight or curved, when the coordinate system is purposely chosen. This parameter can be easily obtained from the Nye tensor calculated at each atom in atomistic modeling. Using the gamma-parameter, a fully automated approach is developed to determine core atoms and the Burgers vectors of dislocations simultaneously. The approach is validated by revealing the smallest dislocation loop and by tracing the whole formation process of complicated dislocation networks on the fly.

Yang, Jinbo [ORNL; Zhang, Z F [Shenyang National Laboratory for Materials Science; Osetskiy, Yury N [ORNL; Stoller, Roger E [ORNL

2015-01-01T23:59:59.000Z

488

Characteristic emission enhancement in the atmosphere with Rn trace using metal assisted LIBS  

SciTech Connect (OSTI)

Several characteristic emission lines from the metal targets (Cu, Zn and Pb) were investigated in trace presence of radon gas in the atmospheric air, using Q-SW Nd:YAG laser induced plasma inside a control chamber. The emission lines of metal species are noticeably enhanced in (Rn+air), relative to those in the synthetic air alone. Similar spectra were also taken in various sub-atmospheric environments in order to determine the optimum pressure for enhancement. Solid-state nuclear track detectors were also employed to count the tracks due to alpha particles for the activity assessment.

Hashemi, M. M. [Physics Department, Doctorate Technical Center of PNU, P.O. Box 19536-33511, Tehran (Iran, Islamic Republic of); Parvin, P., E-mail: parvin@aut.ac.ir; Moosakhani, A. [Physics Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran (Iran, Islamic Republic of); Mortazavi, S. Z.; Reyhani, A. [Physics Department, Imam Khomeini International University, P.O. Box 34149-16818, Qazvin (Iran, Islamic Republic of); Majdabadi, A. [Laser and Optics Research School, NSTRI, P.O. Box 11155-3486, Tehran (Iran, Islamic Republic of); Abachi, S. [Physics Department, University of California, Irvin, CA 92697 (United States)

2014-06-15T23:59:59.000Z

489

Heat kernels and the range of the trace on completions of twisted group algebras.  

E-Print Network [OSTI]

Heat kernels are used in this paper to express the analytic index of projectively invariant Dirac type operators on G-covering spaces of compact manifolds, as elements in the K-theory of certain unconditional completions of the twisted group algebra of G. This is combined with V. Lafforgue's results in the untwisted case, to compute the range of the trace on the K-theory of these algebras, under the hypothesis that G is in the class C' (defined by V. Lafforgue).

Varghese Mathai (U. Adelaide).; 398 (2006) 321-346

490

Solar Dynamics | Open Energy Information  

Open Energy Info (EERE)

Dynamics Jump to: navigation, search Name: Solar Dynamics Place: Ottumwa, Iowa Zip: IA 52501 Sector: Solar Product: Solar Dynamics is a US-based solar powered attic roof vents...

491

Beam Dynamics for Induction Accelerators  

E-Print Network [OSTI]

Dynamics for Induction Accelerators Edward P. Lee Lawrencea natural candidate accelerator for a heavy ion fusion (HIF)words: Fusion, Induction, Accelerators, Dynamics This work

Lee, E.P.

2014-01-01T23:59:59.000Z

492

New methods for quantum mechanical reaction dynamics  

SciTech Connect (OSTI)

Quantum mechanical methods are developed to describe the dynamics of bimolecular chemical reactions. We focus on developing approaches for directly calculating the desired quantity of interest. Methods for the calculation of single matrix elements of the scattering matrix (S-matrix) and initial state-selected reaction probabilities are presented. This is accomplished by the use of absorbing boundary conditions (ABC) to obtain a localized (L{sup 2}) representation of the outgoing wave scattering Green`s function. This approach enables the efficient calculation of only a single column of the S-matrix with a proportionate savings in effort over the calculation of the entire S-matrix. Applying this method to the calculation of the initial (or final) state-selected reaction probability, a more averaged quantity, requires even less effort than the state-to-state S-matrix elements. It is shown how the same representation of the Green`s function can be effectively applied to the calculation of negative ion photodetachment intensities. Photodetachment spectroscopy of the anion ABC{sup -} can be a very useful method for obtaining detailed information about the neutral ABC potential energy surface, particularly if the ABC{sup -} geometry is similar to the transition state of the neutral ABC. Total and arrangement-selected photodetachment spectra are calculated for the H{sub 3}O{sup -} system, providing information about the potential energy surface for the OH + H{sub 2} reaction when compared with experimental results. Finally, we present methods for the direct calculation of the thermal rate constant from the flux-position and flux-flux correlation functions. The spirit of transition state theory is invoked by concentrating on the short time dynamics in the area around the transition state that determine reactivity. These methods are made efficient by evaluating the required quantum mechanical trace in the basis of eigenstates of the Boltzmannized flux operator.

Thompson, W.H. [Univ. of California, Berkeley, CA (United States). Dept. of Chemistry]|[Lawrence Berkeley Lab., CA (United States)

1996-12-01T23:59:59.000Z

493

Measurement of gas/water uptake coefficients for trace gases active in the marine environment  

SciTech Connect (OSTI)

Ocean produced reduced sulfur compounds including dimethylsulfide (DMS), hydrogen sulfide (H{sub 2}S), carbon disulfide (CS{sub 2}), methyl mercaptan (CH{sub 3}CH) and carbonyl sulfide (OCS) deliver a sulfur burden to the atmosphere which is roughly equal to sulfur oxides produced by fossil fuel combustion. These species and their oxidation products dimethyl sulfoxide (DMSO), dimethyl sulfone (DMSO{sub 2}) and methane sulfonic acid (MSA) dominate aerosol and CCN production in clean marine air. Furthermore, oxidation of reduced sulfur species will be strongly influenced by NO{sub x}/O{sub 3} chemistry in marine atmospheres. The multiphase chemical processes for these species must be understood in order to study the evolving role of combustion produced sulfur oxides over the oceans. We have measured the chemical and physical parameters affecting the uptake of reduced sulfur compounds, their oxidation products, ozone, and nitrogen oxides by the ocean's surface, and marine clouds, fogs, and aerosols. These parameters include: gas/surface mass accommodation coefficients; physical and chemically modified (effective) Henry's law constants; and surface and liquid phase reaction constants. These parameters are critical to understanding both the interaction of gaseous trace species with cloud and fog droplets and the deposition of trace gaseous species to dew covered, fresh water and marine surfaces.

Davidovits, P. (Boston Coll., Chestnut Hill, MA (United States). Dept. of Chemistry); Worsnop, D.W.; Zahniser, M.S.; Kolb, C.E. (Aerodyne Research, Inc., Billerica, MA (United States). Center for Chemical and Environmental Physics)

1992-02-01T23:59:59.000Z

494

Trace element geochemical zoning in the Roosevelt Hot Springs thermal area, Utah  

SciTech Connect (OSTI)

Chemical interaction of thermal brines with reservoir rock in the Roosevelt Hot Springs thermal area has resulted in the development of distinctive trace element signatures. Geochemical analysis of soil samples, shallow temperature-gradient drill hole cuttings and deep drill hole cuttings provides a three-dimensional perspective of trace element distributions within the system. Distributions of As, Hg and Li provide the clearest expression of hydrothermal activity. Comparison of these distributions suggests that Li, followed by As and Hg, are progressively deposited by outward flowing, cooling, thermal fluids. Hg, in contrast to As and Li, is distributed only within the outer portions of the thermal system where temperatures are less than about 225/sup 0/C. Heating experiments indicate that extensive Hg remobilization in Roosevelt samples occurs at temperatures as low as 200/sup 0/ to 250/sup 0/C. This suggests that the distribution of Hg largely reflects the present system thermal configuration and that this distribution may be a useful soild geothermometer.

Christensen, O.D.; Moore, J.N.; Capuano, R.M.

1980-09-01T23:59:59.000Z

495

Traces of fission products in southeast Spain after the Fukushima nuclear accident  

Science Journals Connector (OSTI)

Traces of 131I, 134Cs and 137Cs were measured after the Fukushima nuclear accident between 23 March and 13 April 2011 in southeast Spain. The movement of the radioactive cloud toward southeast Spain was reconstructed based on the backward and forward trajectory cluster analyses. Polar maritime air masses which had originated over North America transported the radioactive plume toward the southeast Spain. Aerosols, rainwater, vegetables and cheese were analyzed to determine the radioactive risk. The highest concentrations of 131I, 134Cs and 137Cs in air samples were 2.63 ± 0.12 mBq/m3; 0.10 ± 0.03 mBq/m3; 0.09 ± 0.02 mBq/m3, respectively. After precipitation on April 3rd, the maximum concentrations of 131I, 134Cs and 137Cs were detected in rainwater samples, 1.10 ± 0.16 mBq/L; 0.022 ± 0.003 mBq/L; 0.05 ± 0.03 mBq/L, respectively. As a consequence, 131I was transferred to the human food chain, and found in chard and goat cheese, 0.97 ± 0.20 Bq/kg and 0.52 ± 0.08 Bq/kg, respectively. The traces of 131I, 134Cs and 137Cs detected in the different samples were so low, that there is no impact on human health or the environment in Spain after the Fukushima nuclear accident.

F. Piñero García; M.A. Ferro García

2012-01-01T23:59:59.000Z

496

Novel Sorbent-Based Process for High Temperature Trace Metal Removal  

SciTech Connect (OSTI)

The objective of this project was to demonstrate the efficacy of a novel sorbent can effectively remove trace metal contaminants (Hg, As, Se and Cd) from actual coal-derived synthesis gas streams at high temperature (above the dew point of the gas). The performance of TDA's sorbent has been evaluated in several field demonstrations using synthesis gas generated by laboratory and pilot-scale coal gasifiers in a state-of-the-art test skid that houses the absorbent and all auxiliary equipment for monitoring and data logging of critical operating parameters. The test skid was originally designed to treat 10,000 SCFH gas at 250 psig and 350 C, however, because of the limited gas handling capabilities of the test sites, the capacity was downsized to 500 SCFH gas flow. As part of the test program, we carried out four demonstrations at two different sites using the synthesis gas generated by the gasification of various lignites and a bituminous coal. Two of these tests were conducted at the Power Systems Demonstration Facility (PSDF) in Wilsonville, Alabama; a Falkirk (North Dakota) lignite and a high sodium lignite (the PSDF operator Southern Company did not disclose the source of this lignite) were used as the feedstock. We also carried out two other demonstrations in collaboration with the University of North Dakota Energy Environmental Research Center (UNDEERC) using synthesis gas slipstreams generated by the gasification of Sufco (Utah) bituminous coal and Oak Hills (Texas) lignite. In the PSDF tests, we showed successful operation of the test system at the conditions of interest and showed the efficacy of sorbent in removing the mercury from synthesis gas. In Test Campaign No.1, TDA sorbent reduced Hg concentration of the synthesis gas to less than 5 {micro}g/m{sup 3} and achieved over 99% Hg removal efficiency for the entire test duration. Unfortunately, due to the relatively low concentration of the trace metals in the lignite feed and as a result of the intermittent operation of the PSDF gasifier (due to the difficulties in the handling of the low quality lignite), only a small fraction of the sorbent capacity was utilized (we measured a mercury capacity of 3.27 mg/kg, which is only a fraction of the 680 mg/kg Hg capacity measured for the same sorbent used at our bench-scale evaluations at TDA). Post reaction examination of the sorbent by chemical analysis also indicated some removal As and Se (we did not detect any significant amounts of Cd in the synthesis gas or over the sorbent). The tests at UNDEERC was more successful and showed clearly that the TDA sorbent can effectively remove Hg and other trace metals (As and Se) at high temperature. The on-line gas measurements carried out by TDA and UNDEERC separately showed that TDA sorbent can achieve greater than 95% Hg removal efficiency at 260 C ({approx}200g sorbent treated more than 15,000 SCF synthesis gas). Chemical analysis conducted following the tests also showed modest amounts of As and Se accumulation in the sorbent bed (the test durations were still short to show higher capacities to these contaminants). We also evaluated the stability of the sorbent and the fate of mercury (the most volatile and unstable of the trace metal compounds). The Synthetic Ground Water Leaching Procedure Test carried out by an independent environmental laboratory showed that the mercury will remain on the sorbent once the sorbent is disposed. Based on a preliminary engineering and cost analysis, TDA estimated the cost of mercury removal from coal-derived synthesis gas as $2,995/lb (this analysis assumes that this cost also includes the cost of removal of all other trace metal contaminants). The projected cost will result in a small increase (less than 1%) in the cost of energy.

Gokhan Alptekin

2008-09-30T23:59:59.000Z

497

Towards a Hybrid Dynamic Logic for Hybrid Dynamic Systems1  

E-Print Network [OSTI]

HyLo 2006 Towards a Hybrid Dynamic Logic for Hybrid Dynamic Systems1 Andr´e Platzer2 Carnegie platzer@informatik.uni-oldenburg.de Abstract We introduce a hybrid variant of a dynamic logic for this extended hybrid dynamic logic. With the addition of satisfaction operators, this hybrid logic provides

Platzer, André

498

Fundamentals of Dynamical Systems  

Science Journals Connector (OSTI)

For the purposes of control system design, analysis, test, and repair, the most important part of the very broad subject known as system theory is the theory of dynamical systems. It is difficult to give a pre...

William S. Levine

2005-01-01T23:59:59.000Z

499

Swarms in dynamic environments  

Science Journals Connector (OSTI)

Charged particle swarm optimization (CPSO) is well suited to the dynamic search problem since inter-particle repulsion maintains population diversity and good tracking can be achieved with a simple algorithm. This work extends the application of CPSO ...

T. M. Blackwell

2003-07-01T23:59:59.000Z

500

Biological Interactions and Dynamics  

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

PNNL-20717 Biological Interactions and Dynamics Science Theme Advisory Panel (BID-STAP) May 2011 Report: September 2011 Prepared for the U.S. Department of Energy's Office of...