Sample records for harmon oldham cotton

  1. Nutrient Management, Mississippi 2004 Larry Oldham, Ph.D.

    E-Print Network [OSTI]

    of Cropping Management Systems for the Brown Loam Area of Mississippi Animal By-Product Related Nutrient Litter Management for Land Productivity and Water Quality: Forestry Component Comparison of PoultryNutrient Management, Mississippi 2004 Larry Oldham, Ph.D. Associate Extension Professor - Soils #12

  2. Depositional environment of the Middle Pennsylvanian granite wash: Lambert 1, Hryhor, and Sundance fields, northern Palo Duro basin, Oldham County, Texas

    E-Print Network [OSTI]

    Wharton, Amy Laura

    1986-01-01T23:59:59.000Z

    of time-temperature index (TTI) for burial history of the Cisco Shale in Figure 21. . . . . . . . . 6 Average porosities and permeabilities for the Canyon granite wash, Lambert I and Sundance fields, Oldham County, Texas. Interval footage corresponds...DEPOSITIONAL ENVIRONMENT OF THE MIDDLE PENNSYLVANIAN GRANITE WASH; LAMBERT 1, HRYHOR, AND SUNDANCE FIELDS, NORTHERN PALO DURO BASIN, OLDHAM COUNTY, TEXAS A Thesis by AMY LAURA WHARTON ' Submi'tted to the Graduate College of Texas A...

  3. Evaluating Cotton Seed Quality

    E-Print Network [OSTI]

    Boman, Randy

    2005-10-05T23:59:59.000Z

    High-quality cotton seed is critical for establishing good stands. Over the last several years, producers have scrutinized costs and benefits of numerous new cotton varieties. With the increase in cost of most current cotton varieties and the use...

  4. Cotton Insects.

    E-Print Network [OSTI]

    Gaines, J. C.

    1965-01-01T23:59:59.000Z

    ............................................................................ Lace-winged Fly or Aphid Lion ........................................ Big-eyed Bugs .......................................................................... Hooded Beetle ............... ........... ...................................... Soft... was reported in 1793. It is not able to sur- vive the winter in any part of the United States. .\\pparently infestations always originate from [lights of moths from Central America. Never- theless, the leafworm occurs in some section of the Cotton Belt...

  5. Depositional environment of the Middle Pennsylvanian granite wash: Lambert 1, Hryhor, and Sundance fields, northern Palo Duro basin, Oldham County, Texas

    E-Print Network [OSTI]

    Wharton, Amy Laura

    1986-01-01T23:59:59.000Z

    of Advisory Committee: Dr. Robert R. Berg The Lambert 1, Hryhor, and Sundance fields in Oldham County, Texas produce oil from the Niddle Pennsylvanian Canyon granite wash. Canyon granite wash conglomerates and sandstones have a total thick- ness of about... Regional Structure. Regional Stratigraphy. Oil and Gas Fields of the Texas Panhandle. . . . Granite Wash Oil Fields Lambert I, Hryhor, and Sundance Fields. . Tectonic History. Stratigraphy. Drilling History. Methods CHARACTERISTICS OF THE GRANITE...

  6. The Mechanical Harvesting of Cotton.

    E-Print Network [OSTI]

    Smith, H. P.; Killough, D. T.; Byrom, M. H.; Scoates, D.; Jones, D. L.

    1932-01-01T23:59:59.000Z

    Stripping Rolls 45 Efficiency of the Texas Station Cotton Harvester --_-_.__---.__--___-.------- 47 --loping Varieties of Cotton to Meet the Needs of Mechanical Har- ~esting 54 owledgments 58 nary 58 List of Patents on Cotton Harvesters ' 60 ,ing ant... patent on a mechanical cotton picker, was apparently taken out in the year 1850. The development of a successful mechanical cotton harvester has been slow, due not only to the mechanical problems en- countered in handling the fiber, but also...

  7. Harmonic engine

    DOE Patents [OSTI]

    Bennett, Charles L. (Livermore, CA)

    2009-10-20T23:59:59.000Z

    A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine preferably includes harmonic oscillator valves capable of oscillating at a resonant frequency for controlling the flow of working fluid into and out of the expander, and also preferably includes a shunt line connecting an expansion chamber of the expander to a buffer chamber of the expander for minimizing pressure variations in the fluidic circuit of the engine. The engine is especially designed to operate with very high temperature input to the expander and very low temperature input to the compressor, to produce very high thermal conversion efficiency.

  8. Features . . . Cover Crop Value to Cotton

    E-Print Network [OSTI]

    Watson, Craig A.

    .............................................................................................Page 6 Fuel Prices Projections - Encouraging News .......................Page 7 Agronomy Notes VolumeFeatures . . . Cotton Cover Crop Value to Cotton Cotton Price and Rotation ..............................................................Page 5 Miscellaneous Large differences in nitrogen prices.......................................Page 6

  9. Raw Cotton Requirements of Textile Mills: Implications for Southwestern Cotton.

    E-Print Network [OSTI]

    Graves, James W. (James Wilson)

    1967-01-01T23:59:59.000Z

    in this survey. For the purposes of this report, the states of Texas and Oklahoma are considered to be the southwestern area. Cotton produced in this area has been predominantly of short staple length. These two states have pro~duced more than 95 percent... nature of southwestern cotton are analyzed in this publication. Southwestern cotton, as defined in this pubilcation, is cotton produced in Texas and Oklahoma. It is generally known in the trade as being of relatively short staple length. In recent...

  10. Cotton Harvest-Aid Chemicals.

    E-Print Network [OSTI]

    Metzer, Robert B.; Supak, James

    1987-01-01T23:59:59.000Z

    of Application Managing Harvest-Aid Program Secondary Growth Insect Control Care of Equipment Safety with Chemicals Guide for Using Cotton Harvest Aids Defoliants Desiccants Mixtures Plant Regulators-Conditioners 3 3 4 4 4 4 5 5 6 7 7 COTTON... HARVEST-AID CHEMICALS Robert B. Metzer and James Supak* As the name implies, harvest-aid chemicals pre pare the cotton crop for harvest by reducing foliage and plant moisture that interfere with harvesting operations. Harvest-aid chemicals...

  11. Harmonic engine

    DOE Patents [OSTI]

    Bennett, Charles L.; Sewall, Noel; Boroa, Carl

    2014-08-19T23:59:59.000Z

    An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a harmonic oscillator inlet valve capable of oscillating at a resonant frequency for controlling the flow of working fluid into of the engine. In particular, the inlet valve includes an inlet valve head and a spring arranged together as a harmonic oscillator so that the inlet valve head is moveable from an unbiased equilibrium position to a biased closed position occluding an inlet. Upon releasing the inlet valve the inlet valve head undergoes a single oscillation past the equilibrium positio to a maximum open position and returns to a biased return position close to the closed position to choke the flow and produce a pressure drop across the inlet valve causing the inlet valve to close. Protrusions carried either by the inlet valve head or piston head are used to bump open the inlet valve from the closed position and initiate the single oscillation of the inlet valve head, and protrusions carried either by the outlet valve head or piston head are used to close the outlet valve ahead of the bump opening of the inlet valve.

  12. Phenology of fruit development in cotton

    E-Print Network [OSTI]

    Thangsuphanich, Apirath

    1981-01-01T23:59:59.000Z

    . (August 1981) Apirath Thangsuphanich, B. S. , Kasetsart University Chairman of Advisory Committee: Dr. G. A. Niles To evaluate the growth development of cotton squares and boils, three Upland cotton cultivars and two treatment variables (a size series... but displayed a generalized dual sigmoid curve in cotton boils. Size development in cotton squares dis- played a linear pattern but displayed a sigmoid curve in cotton boils. iv ACKNOWLEDGMENTS I wish to express my sincere appreciation for the guid- ance...

  13. Fertilizer Experiments with Cotton.

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner)

    1932-01-01T23:59:59.000Z

    of plant food is suggested for cotton on these soils. TI Prai the pou1 t,iliz clay TI he Lake Charles clay, an extensive soil in the Gulf Coast irie, is markedly deficient in phosphoric acid, as indicated hy results obtained on this soil... to applications of phosphoric acid and of potash than to appli- cations of nitrogen. The 4-12-4 and 0-12-4 fertilizers used at the rate of 400 pounds per acre were the most profitable treatments on this soil. The dark-colored Goliad fine sandy clay loam...

  14. MATH 132: TOPOLOGY II: SMOOTH MANIFOLDS ANDREW COTTON-CLAY

    E-Print Network [OSTI]

    Cotton-Clay, Andrew

    MATH 132: TOPOLOGY II: SMOOTH MANIFOLDS ANDREW COTTON-CLAY 1. Introduction My Name: Andrew Cotton-Clay

  15. Managing Nitrogen Fertilizer in Cotton

    E-Print Network [OSTI]

    Hons, F. M.; McFarland, Mark L.; Lemon, Robert G.; Nichols, Robert L.; Mazac Jr., F. J.; Boman, R. K.; Saladino, V. A.; Jahn, R. L.; Stapper, J. R.

    2004-12-09T23:59:59.000Z

    To be profitable, cotton producers must manage fertilization efficiently. This publication reports the results of a 5-year study that showed over-fertilization with nitrogen is a common problem. There are specific recommendations for soil testing...

  16. A new harmonic analyzer

    E-Print Network [OSTI]

    Tchamran-Savehi, Abbas

    1958-01-01T23:59:59.000Z

    for their help and suggestions. Special thanks are extended to Professor R. P. Ward for his tieely advice during the course of the present wor'k. CONTENTS Preface Page PART I. ? GENERAL Introduction Graphical Nethod The Problem History of Harmonic... Analysers Nathematical Aspects of Harmonic Analysers PART II. ? A NEW ELECTRO-Ng CHANICAL HARNONIC ANALYZER Sumsmry Description of the New Harmonic Analyser Introducing the Harmonics Dismnsions of a Complex Wave Electrical Integrator 14 16 20 22...

  17. Harmonization of Biodiesel Specifications

    SciTech Connect (OSTI)

    Alleman, T. L.

    2008-02-01T23:59:59.000Z

    Worldwide biodiesel production has grown dramatically over the last several years. Biodiesel standards vary across countries and regions, and there is a call for harmonization. For harmonization to become a reality, standards have to be adapted to cover all feedstocks. Additionally, all feedstocks cannot meet all specifications, so harmonization will require standards to either tighten or relax. For harmonization to succeed, the biodiesel market must be expanded with the alignment of test methods and specification limits, not contracted.

  18. The Cleaning of Mechanically Harvested Cotton.

    E-Print Network [OSTI]

    Miller, H. F. (Herbert F.); Jones, D. L. (Don. L.); Smith, H. P. (Harris Pearson)

    1950-01-01T23:59:59.000Z

    The Cleaning of. Mechanically Harvested Cotton H. P. SMITH, D. L. JONES and H. F. MILLER, JR. 3lank Page in Original Bulletin] Preface For many years cotton growers in the High Plains area have found that cotton harvested late in the season... contained an excessive amount of foreign matter, and that the quality of the cotton was much lower than that of cotton harvested early in the season. This bulletin gives the results of a study conducted at Lubbock and College Station to determine...

  19. Genetic improvement of cotton in Turkey

    E-Print Network [OSTI]

    Eksi, Ismail

    1990-01-01T23:59:59.000Z

    disease loss. Proc. Beltwide Cotton Prod. Res. Conf. , San Antonio, TX. National Cotton Council of America, Memphis, TN. 1982. The MAR (multi-adversity resistance) system for genetic improvement of cotton. Plant Dis. 66:172-176. Bridge, R. R. and L. D.... McDonald. 1987. Beltwide efforts and trends in development of varieties for short-season production systems. Proc. Beltwide Cotton Prod. Conf. , National Cotton. Council of America. Memphis, TN. pp. 82-85. Christidis, B. G. and G. J. Harrison...

  20. Genetic improvement of cotton in Turkey

    E-Print Network [OSTI]

    Eksi, Ismail

    1990-01-01T23:59:59.000Z

    disease loss. Proc. Beltwide Cotton Prod. Res. Conf. , San Antonio, TX. National Cotton Council of America, Memphis, TN. 1982. The MAR (multi-adversity resistance) system for genetic improvement of cotton. Plant Dis. 66:172-176. Bridge, R. R. and L. D.... McDonald. 1987. Beltwide efforts and trends in development of varieties for short-season production systems. Proc. Beltwide Cotton Prod. Conf. , National Cotton. Council of America. Memphis, TN. pp. 82-85. Christidis, B. G. and G. J. Harrison...

  1. harmonic analysis and geometry

    E-Print Network [OSTI]

    Faculty listing for "harmonic analysis and geometry". vCard of Nicola Garofalo Garofalo, Nicola [bio] [homepage] Adjunct Professor of Mathematics

  2. Field Guide to Predators, Parasites and Pathogens Attacking Insect and Mite Pests of Cotton: Recognizing the Good Bugs in Cotton

    E-Print Network [OSTI]

    Knutson, Allen E.; Ruberson, John

    2005-07-08T23:59:59.000Z

    The role of natural enemies in cotton pest management has often been obscured by the widespread use of broad-spectrum insecticides. However, cotton can support a large complex of insects, spiders and mites that feed on cotton pests. Changes...

  3. Electrodynamic spherical harmonic

    E-Print Network [OSTI]

    Andrey Novitsky

    2008-03-28T23:59:59.000Z

    Electrodynamic spherical harmonic is a second rank tensor in three-dimensional space. It allows to separate the radial and angle variables in vector solutions of Maxwell's equations. Using the orthonormalization for electrodynamic spherical harmonic, a boundary problem on a sphere can be easily solved.

  4. Serology of a cotton virus in Texas

    E-Print Network [OSTI]

    Darling, Dale Robert

    1962-01-01T23:59:59.000Z

    of the virus through two or more generations of healthy plants by, s. draft transmission from an infected plant, b. mechanical transfer of the sap of infected plants, c. insect transmission of the virus from infected planta, and by 2. serological...) found that inoculations smde with expressed leaf sap of virus-infected cotton to cotton, bean, cowpes, tobacco and hollyhock plants failed to result in symptoms. Approach drafts of diseased to healthy plants of the Empire variety of cotton were smde...

  5. Comparison of Different Methods of Harvesting Cotton.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson)

    1946-01-01T23:59:59.000Z

    - - TEXAS AGRICULTURAL EXPERIMENT STATION R. D. LEWIS, Director College Station. Texas BULLETIN NO. 683 OCTOBER, 1946 COMPARISON OF DIFFERENT METHODS OF HARVESTING COTTON Division of Agricultural Engineering . and Division of Agronomy... on the rougher methods of harvesting cotton, such as hand-snapping and machine harvesting both with the picker type and the stripper type mechanical harvesters. This n-as largely because the lint from the roughly harvested cottons contained more foreign...

  6. Effect of Cotton Seed and Cotton Seed Meal in the Dairy Ration on Gravity and Centrifugal Creaming of Milk

    E-Print Network [OSTI]

    Curtis, Geo. W. (George Washington); Carson, J. M.

    1891-01-01T23:59:59.000Z

    Peculiar effects of cotton seed and cotton seed meal as food stuffs for the dairy : a continuation of work reported in bulletin no. 11, August, 1890...

  7. Mechanical Production of Cotton in Texas.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson); Jones, D. L. (Don L.)

    1948-01-01T23:59:59.000Z

    miles per hour should cover 50 to 70 acres in a 10-hour day. In exceed- ingly heavy crop residue this type of machine fails to thoroughly chop all the vegetation. In Northwestern Texas, the 4 and 5- MECHANIZED PRODUCTION OF COTTON IN TEXAS 7 row... of these tractors are used in the production of cotton, but surely the majority are being used on farms producing cotton. The production of a cotton crop can be divided into nine operations : disposal of crop residue and cover crops, preparation of the seedbed...

  8. Calibration of Cotton Planting Mechanisms.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson); Byrom, Mills H. (Mills Herbert)

    1936-01-01T23:59:59.000Z

    per foot. To obtain a perfect stand of one plant to Foot, a minimum of 1 to a maximum of 11 plants per foot wonld have to be thinned out. The number for picker wheel- drop planting mechanisms ranged from a minimum of 2 to a maxi- mum of 27 plants... per foot, requiring the removal of from 1 to 26 nlants per foot to leave one plant per foot. CONTENTS Introduction History of cotton planter development ------------.---------------------------------- Cottonseed planting mechanisms Requirements...

  9. Cotton Gin Dust Explosibility Determinations

    E-Print Network [OSTI]

    Vanderlick, Francis Jerome

    2014-01-06T23:59:59.000Z

    COTTON GIN DUST EXPLOSIBILITY DETERMINATIONS A Thesis by FRANCIS JEROME VANDERLICK Submitted to the Office of Graduate and Professional Studies of Texas A&M University in partial fulfillment of the requirements for the degree... Francis Jerome Vanderlick ii ABSTRACT Following the recent Imperial sugar dust explosion in 2008, a comprehensive survey of past dust explosions was conducted by the Occupational Safety and Health Administration (OSHA) to determine potential...

  10. On harmonic binomial series

    E-Print Network [OSTI]

    Mark W. Coffey

    2008-12-09T23:59:59.000Z

    We evaluate binomial series with harmonic number coefficients, providing recursion relations, integral representations, and several examples. The results are of interest to analytic number theory, the analysis of algorithms, and calculations of theoretical physics, as well as other applications.

  11. The Cotton tensor in Riemannian spacetimes

    E-Print Network [OSTI]

    A. Garcia; F. W. Hehl; C. Heinicke; A. Macias

    2004-02-09T23:59:59.000Z

    Recently, the study of three-dimensional spaces is becoming of great interest. In these dimensions the Cotton tensor is prominent as the substitute for the Weyl tensor. It is conformally invariant and its vanishing is equivalent to conformal flatness. However, the Cotton tensor arises in the context of the Bianchi identities and is present in any dimension. We present a systematic derivation of the Cotton tensor. We perform its irreducible decomposition and determine its number of independent components for the first time. Subsequently, we exhibit its characteristic properties and perform a classification of the Cotton tensor in three dimensions. We investigate some solutions of Einstein's field equations in three dimensions and of the topologically massive gravity model of Deser, Jackiw, and Templeton. For each class examples are given. Finally we investigate the relation between the Cotton tensor and the energy-momentum in Einstein's theory and derive a conformally flat perfect fluid solution of Einstein's field equations in three dimensions.

  12. Texas' cotton distribution patterns and utilized transportation modes

    E-Print Network [OSTI]

    Vulcain, Ronald JMA

    1984-01-01T23:59:59.000Z

    of the state cotton produc- tion. These coop gina provided service to an estimated 30, 217 cotton growers. * Texas Cotton Warehouses Booz-Allen and Hamilton, Inc. , surveyed U. S. cotton warehouses in 1980 and noted that 20 to 302 of the United States... picked (U. S. Department of Agriculture (a)). Traditionally, trailers have been used to move cotton out of the field to ginning facilities. However, in the last few years, investments in module builders have increased the operational efficiency...

  13. Optical harmonic generator

    DOE Patents [OSTI]

    Summers, Mark A. (Livermore, CA); Eimerl, David (Pleasanton, CA); Boyd, Robert D. (Livermore, CA)

    1985-01-01T23:59:59.000Z

    A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The "extraordinary" or "e" directions of the crystal elements are oriented in the integral assembly to be in quadrature (90.degree.). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude "o" and "e" components. For a third-harmonic generation, the input fundamental wave has "o" and "e" components whose amplitudes are in a ratio of 2:1 ("o":"e" reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10.degree.. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axes ("o").

  14. Optical harmonic generator

    DOE Patents [OSTI]

    Summers, M.A.; Eimerl, D.; Boyd, R.D.

    1982-06-10T23:59:59.000Z

    A pair of uniaxial birefringent crystal elements are fixed together to form a serially arranged, integral assembly which, alternatively, provides either a linearly or elliptically polarized second-harmonic output wave or a linearly polarized third-harmonic output wave. The extraordinary or e directions of the crystal elements are oriented in the integral assembly to be in quadrature (90/sup 0/). For a second-harmonic generation in the Type-II-Type-II angle tuned case, the input fundamental wave has equal amplitude o and e components. For a third-harmonic generation, the input fundamental wave has o and e components whose amplitudes are in a ratio of 2:1 (o:e reference first crystal). In the typical case of a linearly polarized input fundamental wave this can be accomplished by simply rotating the crystal assembly about the input beam direction by 10/sup 0/. For both second and third harmonic generation input precise phase-matching is achieved by tilting the crystal assembly about its two sensitive axeses (o).

  15. Harmonic functions on Walsh's Brownian motion

    E-Print Network [OSTI]

    Jehring, Kristin Elizabeth

    2009-01-01T23:59:59.000Z

    4.3 Harmonic Functions . . . . . . . . . . . . . . .Chapter 3 Harmonic Functions . . . . . . . . . . . . . . 3.1Markov Chains 4.3.2 Harmonic Functions for the Embedded

  16. Harmonic resolution as a holographic quantum number

    E-Print Network [OSTI]

    Bousso, Raphael

    2009-01-01T23:59:59.000Z

    LBNL- 57239 Harmonic resolution as a holographic quantumhep-th/0310223 UCB-PTH-03/26 Harmonic resolution as aquantum number, the harmonic resolution K. The Bekenstein

  17. MATH 118A: INTRODUCTION TO REAL ANALYSIS ANDREW COTTON-CLAY

    E-Print Network [OSTI]

    Akhmedov, Azer

    MATH 118A: INTRODUCTION TO REAL ANALYSIS ANDREW COTTON-CLAY 1. Introduction My Name: Andrew Cotton-Clay

  18. Inheritance of cotton fiber length and distribution

    E-Print Network [OSTI]

    Braden, Chris Alan

    2006-10-30T23:59:59.000Z

    Fiber quality data from five upland cotton (Gossypium hirsutum L.) genotypes, which were grown at College Station, TX during 2001 and 2002, were subjected to diallel and generation means analyses to determine the potential for improvement of fiber...

  19. Resistance of cotton to pink bollworm damage

    E-Print Network [OSTI]

    Brazzel, J. R.

    1956-01-01T23:59:59.000Z

    , Gulf of California. G. barbadense L .: A cultivated species. South America. Darwinii (Watt): G^ _ barbadense race Darwinii. Galapagos Islands. Kidney cotton: G^ barbadense race brasiliense. Tropical South Central America. Pima: G^ barbadense...

  20. Second Harmonic Generation From Surfaces

    E-Print Network [OSTI]

    Botti, Silvana

    Second Harmonic Generation From Surfaces Nicolas Tancogne-Dejean, Valérie Véniard Condensed Matter/DSM European Theoretical Spectroscopy Facility #12;2 Outline Nonlinear optic and second harmonic generation;4 Second harmonic generation First nonlinear term Centrosymmetric material : (2) = 0 (3)First nonlinear

  1. Analytic Continuation of Harmonic Sums

    E-Print Network [OSTI]

    S. Albino

    2009-03-06T23:59:59.000Z

    We present a method for calculating any (nested) harmonic sum to arbitrary accuracy for all complex values of the argument. The method utilizes the relation between harmonic sums and (derivatives of) Hurwitz zeta functions, which allows a harmonic sum to be calculated as an expansion valid for large values of its argument. A program for implementing this method is also provided.

  2. spherical harmonics for l

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

    Michael, J. Robert; Volkov, Anatoliy

    2015-01-23T23:59:59.000Z

    The widely used pseudoatom formalism [Stewart (1976). Acta Cryst. A32, 565574; Hansen & Coppens (1978). Acta Cryst. A34, 909921] in experimental X-ray charge-density studies makes use of real spherical harmonics when describing the angular component of aspherical deformations of the atomic electron density in molecules and crystals. The analytical form of the densitynormalized Cartesian spherical harmonic functions for up to l 7 and the corresponding normalization coefficients were reported previously by Paturle & Coppens [Acta Cryst. (1988), A44, 67]. It was shown that the analytical form for normalization coefficients is available primarily for l 4 [Hansen & Coppens, 1978; Paturlemore& Coppens, 1988; Coppens (1992). International Tables for Crystallography, Vol. B, Reciprocal space, 1st ed., edited by U. Shmueli, ch. 1.2. Dordrecht: Kluwer Academic Publishers; Coppens (1997). X-ray Charge Densities and Chemical Bonding. New York: Oxford University Press]. Only in very special cases it is possible to derive an analytical representation of the normalization coefficients for 4 4 the density normalization coefficients were calculated numerically to within seven significant figures. In this study we review the literature on the density-normalized spherical harmonics, clarify the existing notations, use the PaturleCoppens (Paturle & Coppens, 1988) method in the Wolfram Mathematica software to derive the Cartesian spherical harmonics for l 20 and determine the density normalization coefficients to 35 significant figures, and computer-generate a Fortran90 code. The article primarily targets researchers who work in the field of experimental X-ray electron density, but may be of some use to all who are interested in Cartesian spherical harmonics.less

  3. Boll and fiber development in long staple upland cotton

    E-Print Network [OSTI]

    Braden, Chris Alan

    2001-01-01T23:59:59.000Z

    . Texas is the leading state in dryland production of upland cotton. In 1998, 1.45 million hectares (~ 60 % of the state's total hectarage) of dryland cotton were planted in Texas (Texas Department of Agriculture, 1998). Dryland hetarage usually...

  4. Root Morphology of Drought Resistance in Cotton (Gossypium hirsutum L.)

    E-Print Network [OSTI]

    Dewi, Elvira Sari

    2011-02-22T23:59:59.000Z

    A combination of root morphology and plant physiology with drought/or salt tolerance should affect drought resistance in cotton (Gossypium hirsutum L.). This experiment was developed to evaluate early vegetative and seedling growth of cotton from...

  5. What is the Real Cost of a Cotton Module Tarp?

    E-Print Network [OSTI]

    Simpson, Shay; Searcy, Stephen W.

    2006-07-21T23:59:59.000Z

    Cotton that is not well protected from the elements loses quality and value as it waits to be ginned. This publication explains the effect of a good cotton module tarp on turnout, ginning rate and lint value....

  6. Impact of an Export Subsidy on the Domestic Cotton Industry.

    E-Print Network [OSTI]

    Wohlgenant, Michael K.

    1986-01-01T23:59:59.000Z

    Elasticities 9 Export Demand Elasticity 10 Elasticity of the Price Transmission of 12 Imported Textiles with Respect to Domestic Cotton Simulation Results for the Effects of Alternative 13 Export Subsidies Estimated Effects on U.S. Price and Quantities... for the three alternative subsidy amounts are presented in Tables 6 through 8. ESTIMATED EFFECTS ON U.s. PRICES AND QUANTITIES The effects of alternative export subsidies on the domestic [14] cotton price, mill consumption of cotton, and cotton exports...

  7. Factors Affecting Cotton Producers' Choice of Marketing Outlet

    E-Print Network [OSTI]

    Pace, Jason 1979-

    2012-08-16T23:59:59.000Z

    Studies 4 Adoption Studies Employing Multinomial Logistic Regression ?.. 5 Hedging Studies ?????????????????????.. 8 Marketing Studies ????????????????????... 12 Non-cotton and General Commodity Marketing Studies ????. 12 Cotton Marketing Studies... Employing Multinomial Logistic Regression This paper will model the factors that influence several qualitative choices (cash marketing outlets) among cotton producers. The objective of qualitative choice modeling is to determine each explanatory...

  8. GM Cotton in China: Innovation integration and seed market disintegration

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    advantages of Bt-cotton have permitted the successful diffusion of Genetically Modified Cotton in China, the commercialization of Genetically Modified Cotton (GMC) started in 1997, with varieties integrating a Bt gene (Bt International Conference "Knowledge, Sustainability and Bio-Resources in the further Development of Agri-food

  9. The effect of sulphur and phosphorus sources on cotton

    E-Print Network [OSTI]

    Black, Shelton Glenn

    1958-01-01T23:59:59.000Z

    plants taken on June 21 13 Table 5 Mean yield of seed cotton in pounds per acre. . Table 6 Mean yield of lint cotton in pounds per acre. . . Table 7 Mean yield of cotton seed in pounds per acre. . 16 17 Table 8 Staple length, grade, and current... Analysis of variance for effect of phosphorus sources on yield of seed cotton, second harvest 49 Table Z5 Analysis of variance for effect of phosphorus sources on total yield of seed cotton 49 Table Z6 Analysis of variance for effect of phosphorus...

  10. On the harmonic map equation

    E-Print Network [OSTI]

    S. C. Tiwari

    2007-06-09T23:59:59.000Z

    A generalized harmonic map equation is presented based on the proposed action functional in the Weyl space (PLA, 135, 315, 1989).

  11. Design of a new cotton dust sampler

    E-Print Network [OSTI]

    Hickman, Phillip Dean

    1985-01-01T23:59:59.000Z

    DESIGN OF A NEW COTTON DUST SAMPLER A Thesis by PHILLIP DEAN HICKMAN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1985 Major Subject...: Agricultural Engineering DESIGN OF A NEW COTTON DUST SAMPLER A Thesis by PHILLIP DEAN HICKMAN Approved as to style and content by: Calvin B. Parnell, Jr. (Chairman of Committee) 0. R. Kunze (Member) Andrew R. McFarland (Member) Ric ard B. nz (Memb...

  12. Fungus Threatens the Viability of Cotton For more than a century, the fungal disease cotton root

    E-Print Network [OSTI]

    , and subsequently validating and expanding the promising results, AgriLife Extension compiled data from the 2010,000 acres of dryland cotton (230,000 total acres). The total net economic benefit to growers was estimated

  13. Factors determining the adoption or non-adoption of precision agriculture by producers across the cotton belt

    E-Print Network [OSTI]

    Lavergne, Christopher Bernard

    2006-04-12T23:59:59.000Z

    The purpose of this study was to determine factors influencing cotton producer adoption of Precision Agriculture in the cotton belt according to members of the American Cotton Producers of the National Cotton Council. The National Research Council...

  14. Factors determining the adoption or non-adoption of precision agriculture by producers across the cotton belt

    E-Print Network [OSTI]

    Lavergne, Christopher Bernard

    2006-04-12T23:59:59.000Z

    The purpose of this study was to determine factors influencing cotton producer adoption of Precision Agriculture in the cotton belt according to members of the American Cotton Producers of the National Cotton Council. The ...

  15. Harmonic Wavelet Transform and Image Approximation

    E-Print Network [OSTI]

    Zhang, Zhihua; Saito, Naoki

    2010-01-01T23:59:59.000Z

    DOI 10.1007/s10851-010-0202-x Harmonic Wavelet Transform andwe approximate f by a harmonic function u such that thebanks. We call this the Harmonic Wavelet Transform (HWT).

  16. Characteristics of Cotton Varieties Grown in Texas.

    E-Print Network [OSTI]

    Metser, Robert B.; Supak, James R.

    1980-01-01T23:59:59.000Z

    and Fusarium wilt and poor resistance to ba~terial blight. Delcot 277 is suitable for dryland and irrigated production on wilt-infested soils in the High and Rolling Plains. It is an open-boIled cotton that can be harvested by picker or stripper. AVERAGE...

  17. Cotton-pellet, Inflammation Correspondence to author:

    E-Print Network [OSTI]

    Rohit Goyal; P. L. Sharma; Manjeet Singh; Rohit Goyal

    Inflammation is a biological reaction attributed with several acute and chronic pathological conditions. The study revealed the pharmacological effect of Tecomella undulate: bark against carrageenan induced paw edema and cotton pellet induced granuloma in rat. Wistar albino rats of either sex (180-240 g) were employed into the study. Acute inflammation was induced by injecting carrageenan (1%) in rat paw and estimated using plethysmograph. Chronic inflammation was induced by cotton pellet induced granuloma method. Serum nitrate/nitrate estimation was also done as an index of inflammatory reactions. Acute toxicity study was also done using Swiss albino mice. Butanolic and water fractions of Tecomella undulate (200 & 400 mg/kg) and indomethacin (10 mg/kg) were used as test drugs. Carrageennan caused a marked increase in rat paw volume due to edema formation. T. undulate: butanolic fraction significantly inhibited paw volume in successive hours similar to indomethacin. Interscapular implanted cotton caused significant increase in granuloma wt. and serum nitrate/nitrite level in control group. However, the test drugs lowered the effects of cotton pellet induced chronic inflammation. Therefore, the results may conclude that the bark of T. undulate is having a pharmacological potential to treat acute and chronic inflammation in rat. Available online on www.ijpsr.com 108ISSN: 0975-8232 INTRODUCTION: Inflammation

  18. CROP & SOIL SCIENCES Cotton Physiologist Tifton campus

    E-Print Network [OSTI]

    Arnold, Jonathan

    CROP & SOIL SCIENCES Cotton Physiologist Tifton campus Committee Membership Dr. Stanley Culpepper - committee chair Dr. John Beasley Department of Crop & Soil Sciences Department of Crop & Soil Sciences & Soil Sciences Department of Crop & Soil Sciences University of Georgia-SE District University

  19. The toxicity of different emulsions of toxaphene to cotton insects

    E-Print Network [OSTI]

    Selby, James Winford

    1952-01-01T23:59:59.000Z

    . Summary of the cotton boll weevil toxicity tests ~ . LS 5. Analysis of cotton bolL weevil control data ob- tained in the laboratory and field teste ~ ~ ~ ~ ~ 20 4 ~ Summary of the cotton boll weevil toxicity test in the Laboratorye ~ ~ ~ ~ ~ ~ ~ ~ e... ~ ~ ~ ~ ~ ~ ~ ~ o ~ ~ e ~ ~ ~ ~ ~ ~ ~ ~ 21 6 Summary of the saltish caterpillar toxicity tests ~ ~ ~ eo ~ ~ ~ ~ ~ e( ~ ~ ~ ~ ~ ~ ee ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ~ ~ e ~ a ~ ~ ~ ~ ~ 22 6 ~ Vedian lethal dosage {KID) of the test materials as obtained fran the Laboratory...

  20. The toxicity of different emulsions of toxaphene to cotton insects

    E-Print Network [OSTI]

    Selby, James Winford

    1952-01-01T23:59:59.000Z

    . Summary of the cotton boll weevil toxicity tests ~ . LS 5. Analysis of cotton bolL weevil control data ob- tained in the laboratory and field teste ~ ~ ~ ~ ~ 20 4 ~ Summary of the cotton boll weevil toxicity test in the Laboratorye ~ ~ ~ ~ ~ ~ ~ ~ e... ~ ~ ~ ~ ~ ~ ~ ~ o ~ ~ e ~ ~ ~ ~ ~ ~ ~ ~ 21 6 Summary of the saltish caterpillar toxicity tests ~ ~ ~ eo ~ ~ ~ ~ ~ e( ~ ~ ~ ~ ~ ~ ee ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ~ ~ e ~ a ~ ~ ~ ~ ~ 22 6 ~ Vedian lethal dosage {KID) of the test materials as obtained fran the Laboratory...

  1. On The Harmonic Oscillator Group

    E-Print Network [OSTI]

    Raquel M. Lopez; Sergei K. Suslov; Jose M. Vega-Guzman

    2011-12-04T23:59:59.000Z

    We discuss the maximum kinematical invariance group of the quantum harmonic oscillator from a view point of the Ermakov-type system. A six parameter family of the square integrable oscillator wave functions, which seems cannot be obtained by the standard separation of variables, is presented as an example. The invariance group of generalized driven harmonic oscillator is shown to be isomorphic to the corresponding Schroedinger group of the free particle.

  2. Echo-Enabled Harmonic Generation

    SciTech Connect (OSTI)

    Stupakov, Gennady; /SLAC

    2012-06-28T23:59:59.000Z

    A recently proposed concept of the Echo-Enabled Harmonic Generation (EEHG) FEL uses two laser modulators in combination with two dispersion sections to generate a high-harmonic density modulation in a relativistic beam. This seeding technique holds promise of a one-stage soft x-ray FEL that radiates not only transversely but also longitudinally coherent pulses. Currently, an experimental verification of the concept is being conducted at the SLAC National Accelerator Laboratory aimed at the demonstration of the EEHG.

  3. Cotton and Manpower - Texas High Plains.

    E-Print Network [OSTI]

    Ducoff, Louis J.; Metzler, William H.; Motheral, Joe R.

    1953-01-01T23:59:59.000Z

    Migratory routes wer Rio Grande U. 5. DEPARTMENT OF AGRICULTURE NEG. 49103 BUREAU OF AGRICULTURAL ECONOMICS Figure 1. DIGEST This report presents the results of a study of farm labor employed in the cotton crop of the Texas High Plains. Made... in Lubbock and Crosby counties by the Texas Agricultural Experiment Station and the Bureau of Agricultural Econom- ics of the United States Department of Agriculture, the study covered the experience of 324 farm operators in the 1951 crop. It was focused...

  4. Economics of Mechanical Cotton Harvesting in the High Plains Cotton Area of Texas.

    E-Print Network [OSTI]

    Rogers, Ralph H.; Morgan, Quevedo Martin; Williamson, M. N. (Marion Newton)

    1951-01-01T23:59:59.000Z

    in the High Plains cotton area of Texas is highly mechanized except for some hand hoeing and much of the harvesting. Some growers rely on mechanical strippers to harvest their entire crop. Others use hand labor to harvest cotton that matures before frost... and harvest the remainder with strippers. An estimated 40 percent of the 1949 record crop, or about 575,000 bales, was machine harvested in the 10 counties in type-of-farming area No. 3, Figure 1. During the 4 years of study, 1947-50, costs of hand harvest...

  5. Making Replant Decisions in Cotton SCS-2007-08

    E-Print Network [OSTI]

    Mukhtar, Saqib

    phase of cotton production. Cool temperatures, excessive moisture, hard, packing rains, wind and sand the control of the cotton producer, but force un- wanted and difficult decisions on whether to replant damaged fields will minimize wind and sand damage, improve aeration, and hasten warming and drying of the soil

  6. Guides in Cotton Irrigation on the High Plains.

    E-Print Network [OSTI]

    Swanson, N. P.; Thaxton, E. L. Jr.

    1956-01-01T23:59:59.000Z

    United States cotton crop and one-third the total Texas crop. The terrain is level and, 1 tiltrefore, is suited to large-scale, high-speed, aecl~anized operation. The soils have a high de- tree of inherent fertility and produce good yields r cotton...

  7. Nano Res (2010) 3: 452458452 Aqueous Supercapacitors on Conductive Cotton

    E-Print Network [OSTI]

    Cui, Yi

    Nano Res (2010) 3: 452­458452 Aqueous Supercapacitors on Conductive Cotton Mauro Pasta1,2 , Fabio the fabrication of wearable supercapacitors using cotton fabric as an essential component. Carbon nanotubes in the supercapacitor. Aqueous lithium sulfate is used as the electrolyte in the devices, because it presents no safety

  8. Harmonic distortion correction in pipelined analog to digital converters

    E-Print Network [OSTI]

    Panigada, Andrea

    2009-01-01T23:59:59.000Z

    Background Correction of Harmonic Distortion in PipelinedBackground Correction of Harmonic Distortion in PipelinedADC with 69dB SNDR Enabled by Digital Harmonic Distortion

  9. UV Second-Harmonic Studies of Concentrated Aqueous Electrolyte Interfaces

    E-Print Network [OSTI]

    Otten, Dale Edward

    2010-01-01T23:59:59.000Z

    Probed by UV Second Harmonic Generation, in Department ofby UV Second Harmonic Generation Spectroscopy," 114, 13746with Femtosecond Second Harmonic Generation Spectroscopy,"

  10. Harmonic algebraic curves and noncrossing partitions

    E-Print Network [OSTI]

    Martin, Jeremy L.; Savitt, David; Singer, Ted

    2007-02-01T23:59:59.000Z

    Motivated by Gausss first proof of the fundamental Theorem of Algebra, we study the topology of harmonic algebraic curves. By the maximum principle, a harmonic curve has no bounded components; its topology is determined by the combinatorial data...

  11. Successful Cooperative Cotton Gin Associations in Texas.

    E-Print Network [OSTI]

    Paulson, W. E. (William E.)

    1943-01-01T23:59:59.000Z

    to the cotton growers' probl-em of obtaining an adequate return for their pro- ductive efforts. The small single stand gin and the separate press, both operated by mule- or horse-power, did not qualify ginning as a business undertaking. The cooperative gin... had to wait until ginning developed as a commercial enterprise. The combination of the gin and the press jn a single operating unit and the adoption of steam power facilitated increases in the capacity of a gin plant to a point makfig commercial...

  12. Machine Placement of Fertilizer for Cotton.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson); Morris, H. F. (Harry Forrest); Byrom, Mills H. (Mills Herbert)

    1937-01-01T23:59:59.000Z

    too near, germination is delayed and the total number of seedling obtained will be considerably reduced. Experiments were made at Bryan, Temple, College Station, and Nacog? doches from 1932 to 1935 to determine the effect on germination and yield... with cotton was conducted for the first three years on the heavy Yahola clay, but in 1935 the test was on a soil having a higher percentage of sand. Houston black clay is black, very dark gray, or dark brown heavy clay. The subsoil is a yellowish...

  13. Hibernation of the Cotton Flea Hopper.

    E-Print Network [OSTI]

    Reinhard, H. J. (Henry Jonathan)

    1928-01-01T23:59:59.000Z

    Investigations E C CUSHING B 5 Assisfant in Cro s P.' R: JOHNSON: 13: k:: Assistant in ~oig VETERINARY SCIENCE: **M. FRANC~S I). V. M. Chief. FI. SCHMIDT' D. V. M.' Veterznarian J. D. JONES: I). V. M : Veterinarian PLANT PATHOLOGY AND PHYSIOLOGY: J. J..., which remain dormant throughout the winter and hatch the following spring when the mean temperature reaches 58 or 60 degrees F. This Bulletin reports the results secured in the hiberation studies on the cotton flea hopper during the seasons of 1925...

  14. Mechanical Production of Cotton in Texas.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson); Jones, D. L. (Don L.)

    1948-01-01T23:59:59.000Z

    IN TEXAS 13 The number of operations necessary to obtain a good seed- bed and a good stand of plants is materially influenced by the thoroughness of crop residue disposal, soil type, topography of the land, rainfall, power available and the type... in the soil and more uniform coverage and results in better stands of seedlings. Date of planting: The date of planting should be delayed until after danger from frosts. Too early planting is a gamble with the weather. Planting of cotton in Texas begins...

  15. Cotton Electric Coop, Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformationNew|Core Analysis AtSystems |CostaCotton County,

  16. Harmonic generation from indium-rich plasmas

    SciTech Connect (OSTI)

    Ganeev, R. A.; Kulagin, I. A. [Akadempribor Scientific Association, Academy of Sciences of Uzbekistan, Tashkent 700125 (Uzbekistan); Singhal, H.; Naik, P. A.; Arora, V.; Chakravarty, U.; Chakera, J. A.; Khan, R. A.; Raghuramaiah, M.; Gupta, P. D. [Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013 (India); Redkin, P. V. [Samarkand State University, Samarkand 703004 (Uzbekistan)

    2006-12-15T23:59:59.000Z

    An experimental study of high-order harmonic generation in In, InSb, InP, and InGaP plasmas using femtosecond laser radiation with variable chirp is presented. Intensity enhancement of the 13th and 21st harmonics compared to the neighboring harmonics by a factor of 200 and 10, respectively, is observed. It is shown that the harmonic spectrum from indium-containing plasma plumes can be considerably modified by controlling the chirp of the driving laser pulse.

  17. Reduced Harmonic Representation of Partitions

    E-Print Network [OSTI]

    Michalis Psimopoulos

    2011-03-08T23:59:59.000Z

    In the present article the reduced integral representation of partitions in terms of harmonic products has been derived first by using hypergeometry and the new concept of fractional sum and secondly by studying the Fourier series of the kernel function appearing in the integral representation. Using the method of induction, a generalization of the theory has also been obtained.

  18. The Quantum Harmonic Oscillator C. David Sherrill

    E-Print Network [OSTI]

    Sherrill, David

    The Quantum Harmonic Oscillator C. David Sherrill School of Chemistry and Biochemistry Georgia Institute of Technology February 2002 1 Introduction The harmonic oscillator is extremely useful by coupled harmonic oscillators. The atoms are viewed as point masses which are connected by bonds which act

  19. spherical harmonics for l < 20

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

    Michael, J. Robert [Middle Tennessee State University; Volkov, Anatoliy [Middle Tennessee State University

    2015-01-23T23:59:59.000Z

    The widely used pseudoatom formalism [Stewart (1976). Acta Cryst. A32, 565574; Hansen & Coppens (1978). Acta Cryst. A34, 909921] in experimental X-ray charge-density studies makes use of real spherical harmonics when describing the angular component of aspherical deformations of the atomic electron density in molecules and crystals. The analytical form of the densitynormalized Cartesian spherical harmonic functions for up to l 7 and the corresponding normalization coefficients were reported previously by Paturle & Coppens [Acta Cryst. (1988), A44, 67]. It was shown that the analytical form for normalization coefficients is available primarily for l 4 [Hansen & Coppens, 1978; Paturle & Coppens, 1988; Coppens (1992). International Tables for Crystallography, Vol. B, Reciprocal space, 1st ed., edited by U. Shmueli, ch. 1.2. Dordrecht: Kluwer Academic Publishers; Coppens (1997). X-ray Charge Densities and Chemical Bonding. New York: Oxford University Press]. Only in very special cases it is possible to derive an analytical representation of the normalization coefficients for 4 4 the density normalization coefficients were calculated numerically to within seven significant figures. In this study we review the literature on the density-normalized spherical harmonics, clarify the existing notations, use the PaturleCoppens (Paturle & Coppens, 1988) method in the Wolfram Mathematica software to derive the Cartesian spherical harmonics for l 20 and determine the density normalization coefficients to 35 significant figures, and computer-generate a Fortran90 code. The article primarily targets researchers who work in the field of experimental X-ray electron density, but may be of some use to all who are interested in Cartesian spherical harmonics.

  20. Brain Image Registration Using CorticallyBrain Image Registration Using Cortically Constrained Harmonic MappingsConstrained Harmonic Mappings

    E-Print Network [OSTI]

    Leahy, Richard M.

    Harmonic MappingsConstrained Harmonic Mappings Anand A Joshi1, David W Shattuck2, Paul M Thompson2 and Richard M Leahy1 Subcortical Structure AIR Harmonic HAMMER Harmonic +Intensity Left Thalamus 0.79 0.68 0. Extrapolation of the surface map to the entire cortical volume by a harmonic map. 3. Refinement of the harmonic

  1. Cotton responses to mepiquat chloride and PGR-IV treatments

    E-Print Network [OSTI]

    Biles, Stephen Paul

    1998-01-01T23:59:59.000Z

    Plant growth regulators (PGRS) are applied to cotton (Gossypium hirsutum L.) to control vegetative growth, increase yields and hasten maturity. Two of these PGRS, mepiquat chloride (MC) and PGR-IV, affect plant growth in different ways. MC inhibits...

  2. Evaluation of PGR properties of TRIMAX in cotton

    E-Print Network [OSTI]

    McGuire, Cy Christopher

    2005-11-01T23:59:59.000Z

    Pesticides comprise a large portion of production inputs in cotton. Reducing or enhancing their efficacy presents an avenue to increase profit. Pesticides containing both insecticidal and growth enhancing properties may be a viable option...

  3. Predicting boll weevil eradication induced pest outbreaks in Texas cotton

    E-Print Network [OSTI]

    Butler, James Joseph

    2004-11-15T23:59:59.000Z

    damage risks from cotton aphid, beet armyworm, bollworm (Helicoverpa zea Boddie), and other worms (Estigmene acrea Drury, Pseudoplusia includens Walker, and Trichoplusia ni H?bner); and (iii) evaluated the effects of malathion ULV on the red imported fire...

  4. Using Petiole Analysis for Nitrogen Management in Cotton

    E-Print Network [OSTI]

    Livingston, Stephen; Hickey, M. G.; Stichler, Charles

    1996-03-15T23:59:59.000Z

    For cotton growers, maintaining proper nitrogen balance is a major concern. Petiole analysis, the laboratory analysis of the nitrogen content of leaf stems, can be coupled with plant monitoring to form an effective nitrogen management program...

  5. Cotton responses to mepiquat chloride and PGR-IV treatments

    E-Print Network [OSTI]

    Biles, Stephen Paul

    1998-01-01T23:59:59.000Z

    Plant growth regulators (PGRS) are applied to cotton (Gossypium hirsutum L.) to control vegetative growth, increase yields and hasten maturity. Two of these PGRS, mepiquat chloride (MC) and PGR-IV, affect plant growth in ...

  6. ESIM: an energy-based cotton ginning simulator

    E-Print Network [OSTI]

    Williams, Gordon Frederick

    1982-01-01T23:59:59.000Z

    through a gin plant is accomplished pneumatically. It has been determined that pneumatic conveyors are, at best, only 50 percent as efficient as comparable mechanical conveying systems (Baker and Sted- ronsky, 1968). Power surveys of cotton gina have...

  7. affects cotton plant: Topics by E-print Network

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

    picked and stripped cotton... km west of Plains, Texas. The field was located on a Brownfield fine sand, and Stoneville 4554 Bollgard II ? Roundup Ready Flex ? (ST 4554 B2RF) was...

  8. Improved cell cycle synchronization and chromosome doubling methods in cotton

    E-Print Network [OSTI]

    Halfmann, Randal

    2013-02-22T23:59:59.000Z

    Cotton is an economically important crop in the U.S., but is relatively poorly characterized genetically. Unlike other, more researched crops, it is lacking highly effective methods for consistent cell cycle manipulation and chromosome doubling...

  9. Development of Systems to Improve Cotton Module Shape

    E-Print Network [OSTI]

    Hardin, Robert Glen

    2011-10-21T23:59:59.000Z

    Properly constructed modules will prevent reduced lint value and increased ginning costs when significant rainfall occurs. Additionally, cotton producers often have difficulty finding adequate labor during harvest. These issues were addressed...

  10. Feeding behavior of Heliothis zea (Boddie) on selected cotton cultivars

    E-Print Network [OSTI]

    Schmidt, Kristine Marguerite

    1985-01-01T23:59:59.000Z

    OF SCIENCE December 1985 Major Subject: Entomology FEEDING BEHAVIOR OF HELIOTHIS ZEA (BODDIE) ON SELECTED COTTON CULTIVARS A Thesis by KR ISTINE MARGUERITE SCHMIDT Approved as to style and content by: H. B ct (Co-Chairman of Committee) S. B. Vinson... (Co-Chairman of Committee) M. K. Harri s (Member) A. Ni I s (Member) F. . Maxwell (Head of Department) December 1985 ABSTRACT Feeding Behavior of Heliothis zea (Boddie) on Selected Cotton Cultivars. (December 1985) Kristine M. Schmidt, B. S...

  11. Progress in the Study of the Mechanical Harvesting of Cotton.

    E-Print Network [OSTI]

    Smith, H. P. (Harris Pearson)

    1935-01-01T23:59:59.000Z

    Harvesting of Cotton AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS T. 0. WALTON, President STATION STAFPt Administration : Veterinary Science : A. B. Conner, M. S., Diraetor *M. Francis, D. V. M., Chief R. E. Karper. M. S., Vice Director 33. Schmidt, D... slightly roughened surface gave a high efficiency in harvesting cotton. Rolls 56 inches in length, operated at an angle between 25 and 30 degrees with the ground, and hav- ing a peripheral travel faster than that of the forward travel of the tractor...

  12. Impact of the red imported fire ant upon cotton arthropods

    E-Print Network [OSTI]

    Diaz Galarraga, Rodrigo Rogelio

    2004-09-30T23:59:59.000Z

    where biological control, cultural control and crop management play crucial roles. Biological control of pests in cotton is mainly exerted by a complex of generalist predators that prevents potential pests from causing economic loss (Sterling et al...Daniel and Sterling 1982, Fillman and Sterling 1983). Thus, the presence of S. invicta in cotton fields presents a dilemma: Do S. invicta favor or disrupt biological control of pests? To date, most available studies address only the impact of S. invicta on a few...

  13. Distribution and Abundance Patterns of Spiders Inhabiting Cotton in Texas.

    E-Print Network [OSTI]

    Dean, D.A.; Sterling, W.L.

    1987-01-01T23:59:59.000Z

    . L. Sterling Department of Entomology Texas A&M University Abstract Patterns of the distribution and abundance of spiders were determined in the major cotton growing areas of Texas during 1982-83. M isumenops spp., Oxyopes saiticus Hentz... to predict this neutrality is important since spiders could then be eliminated as an important factor in predicting the dynamics of other arthropods. The cotton fleahopper (Pseudatomoscelis seriatus [Reuter]) model (Hartstack and Sterling 1986) uses...

  14. The Effect of Spacing on the Yield of Cotton.

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner)

    1926-01-01T23:59:59.000Z

    was done at the Main Station, College Station, and at the substations at Bee- ville, Troup, Angleton, Temple, Spur, Lubbock, Pecos, Nacog- doches, and Chillicothe. This Bulletin reports the results of this work up to the present time. Statistical... in the cotton-growing states since 1887. The Division of Agronomy, Texas Agricultural Experiment Station, began experiments on the spacing of cotton on a rather elaborate scale in 1914 at the substations at Angle- ton, Beeville, Chillicothe, Lubbock...

  15. Effect of 1-MCP on Cotton Plants Under Abiotic Stress

    E-Print Network [OSTI]

    Chen, Yuan

    2013-05-06T23:59:59.000Z

    and environmental signals (Gan and Amasino, 1997; Pierik et al., 2007; Young et al., 2004). When ethylene function was blocked, lower electrolyte leakage was detected, indicating delayed senescence in flower petals (Faragher et al., 1987; Sisler et al., 1996... drought stress in controlled environment; 3) optimize the electrolyte leakage method for analyzing the effect of 1-MCP on cotton and test the effect of 1-MCP concentration, inducing time, and leaf positions on 1-MCP treated cotton plants...

  16. Comparison of sampling techniques for Heliothis species in cotton

    E-Print Network [OSTI]

    Walters, Michelle Lynn

    1986-01-01T23:59:59.000Z

    December 19g& Najor Subject: Entomology COMPARISON OF SAMPLING TECHNIQUES FOR HELIOTHIS SPECIES IN COTTON A Thesis by MICHELLE LYNN WALTERS Approved as to style and content by: J. K. Walker, Jr. (Chairman of Committee) J. K. Olson (Member) A. E.... Percival (Member) 2 & F/yg. (Member) F, G. Maxwell (Head of Department) December 1986 ABSTRACT Comparison of Sampling Techniques for Heliothis Species in Cotton. (December 1986) Nichelle Lynn Walters, B. S. , Arizona State University; Chairman...

  17. The magnesium nutrition of American upland and Egyptian cottons

    E-Print Network [OSTI]

    Helmy, Hussein

    1956-01-01T23:59:59.000Z

    ~ ~ ~ ~ ~ ~ ~ ~ 19 ~ ~ ~ SS ~ ~ ~ ~ ~ ~ ~ S7 LIST OF TABLES Page Effect of magnesium on stem he1ghts . . . 52 Relation of magnesium supply to average fresh and dry weight of cotton plants at 45 days ~ ~ \\ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 55 Relation of magnesium supply... to average fresh and dry weight of cotton plants at 85 days ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 54 Relation of magnesium supply to average number of flowers produced per plant 1n three day intervals, percentage shedding, percentage boll-set and rel- ative...

  18. Hyperspherical harmonic formalism for tetraquarks

    E-Print Network [OSTI]

    J. Vijande; N. Barnea; A. Valcarce

    2006-10-11T23:59:59.000Z

    We present a generalization of the hyperspherical harmonic formalism to study systems made of quarks and antiquarks of the same flavor. This generalization is based on the symmetrization of the $N-$body wave function with respect to the symmetric group using the Barnea and Novoselsky algorithm. Our analysis shows that four-quark systems with non-exotic $2^{++}$ quantum numbers may be bound independently of the quark mass. $0^{+-}$ and $1^{+-}$ states become attractive only for larger quarks masses.

  19. Harmonic Chain with Weak Dissipation

    E-Print Network [OSTI]

    A. A. Lykov; V. A. Malyshev

    2013-02-20T23:59:59.000Z

    We consider finite harmonic chain (consisting of N classical particles) plus dissipative force acting on one particle (called dissipating particle) only. We want to prove that "in the generic case" the energy (per particle) for the whole system tends to zero in the large time limit and then in the large N limit. "In the generic case" means: for almost all initial conditions and for almost any choice of the dissipating particle, in the thermodynamic limit.

  20. Impact of Cotton Harvesting and Storage Methods on Seed and Fiber Quality

    E-Print Network [OSTI]

    Hamann, Mark Thomas

    2012-02-14T23:59:59.000Z

    , sticks, and leaves. Harvested cotton is placed in modules for storage prior to ginning. Recent developments in the industry include on-board module builders that package seed cotton as they harvest. This leads to three methods of storage: 1...

  1. Managing Cotton Insects in the High Plains, Rolling Plains and Trans Pecos Areas of Texas--2008

    E-Print Network [OSTI]

    Siders, Kerry; Baugh, Brant A.; Sansone, Chris; Kerns, David L.

    2008-04-29T23:59:59.000Z

    Cotton insect management practices, including cultural control techniques that reduce the risk of crop damage, are discussed. The emphasis is on monitoring and identifying insect populations in cotton. A supplement (E-6A) lists insecticides...

  2. Viscoelastic properties of seed cotton and their effect on module shape and density

    E-Print Network [OSTI]

    Hardin, Robert Glen

    2004-11-15T23:59:59.000Z

    Modules for cotton storage and transport should be constructed with a shape that will resist collecting water to maintain the quality of seed cotton during storage. Meeting this specification requires knowledge of the ...

  3. Cotton Leaf Grade as Influenced by Harvest Aid Regimes and Cultivar Characteristics

    E-Print Network [OSTI]

    Eder, Zachary Phillip

    2013-08-09T23:59:59.000Z

    Cotton, Gossypium hirsutum L., leaf grade values can significantly increase with remnants of leaf and bract materials, and can result in increased ginning costs and discounts to the producer. Cotton classed through the ...

  4. The Effects of Insecticidal Treatments on Beneficial Insect and Spider Population Cotton Fields

    E-Print Network [OSTI]

    Morrison, Eston Odell

    1960-01-01T23:59:59.000Z

    ~ ~ ggggggf Gloverz appeezed after calcim arsenate was applied to cotton. ldditionsl applications of ths insecticide did not reduce the infestations to any great extent, hicotine dusts applied with the calcine arssnats 4id not give satisfactory oontrol.... Fletcher (1929) reported that cotton plants dusted with celciuRL arsenats becane infested with cotton aphids which cov- ered tbe leaves with honeydew. Me believed that an uneven 4is- tribution of @gg$~ ggg (peddle) on cotton ma dus to the at- traction...

  5. Killing vector fields and harmonic superfield theories

    SciTech Connect (OSTI)

    Groeger, Josua, E-mail: groegerj@mathematik.hu-berlin.de [Humboldt-Universitt zu Berlin, Institut fr Mathematik, Rudower Chaussee 25, 12489 Berlin (Germany)

    2014-09-15T23:59:59.000Z

    The harmonic action functional allows a natural generalisation to semi-Riemannian supergeometry, also referred to as harmonic, which resembles the supersymmetric sigma models studied in high energy physics. We show that Killing vector fields are infinitesimal supersymmetries of this harmonic action and prove three different Noether theorems in this context. En passant, we provide a homogeneous treatment of five characterisations of Killing vector fields on semi-Riemannian supermanifolds, thus filling a gap in the literature.

  6. Extra Harmonic Vowel in Chicahuaxtla Trique

    E-Print Network [OSTI]

    Matsukawa, Kosuke

    2008-01-01T23:59:59.000Z

    Extra Harmonic Vowel in Chicahuaxtla Trique1 Kosuke Matsukawa State University of New York at Albany 1. Introduction Chicahuaxtla Trique is spoken in Oaxaca, Mexico and belongs to the Trique language group of the Mixtecan family...). In Chicahuaxtla Trique, an extra harmonic vowel is added after a laryngealized vowel (either a glottalized vowel or an aspirated vowel) in a final syllable. The extra harmonic vowel does not exist in Copala Trique or Itunyoso Trique and is attached mostly...

  7. Power Quality/Harmonic Detection: Harmonic Control in Electric Power Systems for the Telecommunications Industry

    E-Print Network [OSTI]

    Felkner, L. J.; Waggoner, R. M.

    The control of harmonics in power systems continues to be a major concern in the telecommunications industry. AC/DC telecommunication conversion equipment has rarely been thought of as playing a major role in the harmonic interaction problem. Yet...

  8. Andrew Cotton-Clay Massachusetts Institute of Technology E-mail: acotton@math.berkeley.edu

    E-Print Network [OSTI]

    Cotton-Clay, Andrew

    Andrew Cotton-Clay Massachusetts Institute of Technology E-mail: acotton: Gromov's Nonsqueezing Theorem Advisor: Peter Kronheimer Publications A. Cotton-Clay. A sharp bound on fixed points of area-preserving surface diffeo- morphisms. In preparation. A. Cotton-Clay. Symplectic

  9. Harmonic Analysis Errors in Calculating Dipole,

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

    to reduce the harmonic field calculation errors. A conformal transfor- mation of a multipole magnet into a dipole reduces these errors. Dipole Magnet Calculations A triangular...

  10. Modulation compression for short wavelength harmonic generation

    E-Print Network [OSTI]

    Qiang, J.

    2010-01-01T23:59:59.000Z

    Wavelength Harmonic Generation Ji Qiang Lawrence Berkeleyform a basis for fourth generation light source. Currently,e?ciency was proposed for generation of short wavelength

  11. Harmonic Cheeger-Simons characters with applications

    E-Print Network [OSTI]

    Richard Green; Varghese Mathai

    2009-02-13T23:59:59.000Z

    We initiate the study of harmonic Cheeger-Simons characters, with applications to smooth versions of the Geometric Langlands program in the abelian case.

  12. Making space for harmonic oscillators

    SciTech Connect (OSTI)

    Michelotti, Leo; /Fermilab

    2004-11-01T23:59:59.000Z

    If we restrict the number of harmonic oscillator energy eigenstates to some finite value, N, then the discrete spectrum of the corresponding position operator comprise the roots of the Hermite polynomial H{sub N+1}. Its range is just large enough to accommodate classical motion at high energy. A negative energy term must be added to the Hamiltonian which affects only the last eigenstate, |N>, suggesting it is concentrated at the extrema of this finite ''space''. Calculations support a conjecture that, in the limit of large N, the global distribution of points approaches the differential form for classical action.

  13. Harmonic potential and hadron spectroscopy

    E-Print Network [OSTI]

    Rafael Tumanyan

    2009-05-28T23:59:59.000Z

    The quark-gluon sea in the hadrons is considered as periodically correlated. Energy levels of Shrodinger equation with harmonic potential is used for describing of the spectrum of hadron masses. In the considered cases the effective potential operating on each particle of ensemble, under certain conditions becomes square-law on displacement from a equilibrium point. It can become an explanation of popularity of oscillator potential for the description of a spectrum of masses of elementary particles. The analysis shows that levels of periodic potential better agreed to the spectrum of hadron masses, than levels of other potentials used for an explanation of a spectrum of masses.

  14. Constructing Buildings and Harmonic Maps

    E-Print Network [OSTI]

    Katzarkov, Ludmil; Pandit, Pranav; Simpson, Carlos

    2015-01-01T23:59:59.000Z

    In a continuation of our previous work, we outline a theory which should lead to the construction of a universal pre-building and versal building with a $\\phi$-harmonic map from a Riemann surface, in the case of two-dimensional buildings for the group $SL_3$. This will provide a generalization of the space of leaves of the foliation defined by a quadratic differential in the classical theory for $SL_2$. Our conjectural construction would determine the exponents for $SL_3$ WKB problems, and it can be put into practice on examples.

  15. A Formal model to aid documenting and harmonizing of information

    E-Print Network [OSTI]

    Zheng, Yuliang

    A Formal model to aid documenting and harmonizing of information security requirements Jussipekka Information security development, harmonization of information security, organizational modeling 1 INTRODUCTION A formal top down model to harmonize and document information security requirements shall

  16. HARMONIC MAPPINGS BETWEEN RIEMANNIAN MANIFOLDS Anand Arvind Joshi

    E-Print Network [OSTI]

    Leahy, Richard M.

    HARMONIC MAPPINGS BETWEEN RIEMANNIAN MANIFOLDS by Anand Arvind Joshi A Thesis Presented ii Abstract iv 1 Harmonic Mappings 1 1.1 Space of Maps Variation Formula . . . . . . . . . . . . . . . . . . . . . . . . 11 1.4 Harmonic Maps

  17. Acoustoelectric Harmonic Generation in a Photoconductive Piezoelectric Semiconductor

    E-Print Network [OSTI]

    Acoustoelectric Harmonic Generation in a Photoconductive Piezoelectric Semiconductor W. Arthur, R harmonics in the low frequency regime (. Piezoelectric semiconductors can exhibit harmonic generation because of interactions between the acoustic

  18. The Evaluation of High Tannin Cotton Lines for Resistance to Rhizoctonia solani and Pythium aphanidermatum

    E-Print Network [OSTI]

    Kennett, Raymond Matthew

    2011-02-22T23:59:59.000Z

    for Pest Resistance. p 31. In Proc Beltwide Cotton Prod. Res. Conf. New Orleans, LA. 3-8 Jan. 1988. Natl. Cotton Coun. Am., Memphis, TN. Bell, A.A., K. M. El-Zik, and P. M. Thaxton, 1992. Chemistry, Biological Significance and Genetic Control.... and M.V. Patel. 1997. Cotton Disease Loss Estimate Committee Report. p. 130- 131. In Proc Beltwide Cotton Prod. Res. Conf. New Orleans, LA. 6-10 Jan. 1997. Natl. Cotton Coun. Am., Memphis, TN. Bush, D.L., L.S. Bird and F.M. Bourland. 1978...

  19. The Evaluation of High Tannin Cotton Lines for Resistance to Rhizoctonia solani and Pythium aphanidermatum

    E-Print Network [OSTI]

    Kennett, Raymond Matthew

    2011-02-22T23:59:59.000Z

    for Pest Resistance. p 31. In Proc Beltwide Cotton Prod. Res. Conf. New Orleans, LA. 3-8 Jan. 1988. Natl. Cotton Coun. Am., Memphis, TN. Bell, A.A., K. M. El-Zik, and P. M. Thaxton, 1992. Chemistry, Biological Significance and Genetic Control.... and M.V. Patel. 1997. Cotton Disease Loss Estimate Committee Report. p. 130- 131. In Proc Beltwide Cotton Prod. Res. Conf. New Orleans, LA. 6-10 Jan. 1997. Natl. Cotton Coun. Am., Memphis, TN. Bush, D.L., L.S. Bird and F.M. Bourland. 1978...

  20. Radiation reaction and quantum damped harmonic oscillator

    E-Print Network [OSTI]

    F. Kheirandish; M. Amooshahi

    2005-07-19T23:59:59.000Z

    By taking a Klein-Gordon field as the environment of an harmonic oscillator and using a new method for dealing with quantum dissipative systems (minimal coupling method), the quantum dynamics and radiation reaction for a quantum damped harmonic oscillator investigated. Applying perturbation method, some transition probabilities indicating the way energy flows between oscillator, reservoir and quantum vacuum, obtained

  1. Harmonic cascade FEL designs for LUX

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    1.3: a fully 3D time-dependent FEL sim- ulation code, Nucl.a XUV/soft X-ray harmonic-cascade FEL for the proposed LBNLLBNL-56329 Harmonic cascade FEL designs for LUX G. Penn, M.

  2. Impact of stray capacitance on hvdc harmonics

    SciTech Connect (OSTI)

    Larsen, E.V.; Sublich, M.; Kapoor, S.C.

    1989-01-01T23:59:59.000Z

    Recent experience suggests that a new approach is needed to determining harmonic generation from hvdc converters for the purpose of telephone interference evaluation. This paper presents simulation results showing the effect on harmonic generation of stray capacitances inherent to hvdc converters. These simulation results illustrate the basic characteristics of the phenomenon, which agree qualitatively with field experience.

  3. CHAPLIN - Complex Harmonic Polylogarithms in Fortran

    E-Print Network [OSTI]

    Stephan Buehler; Claude Duhr

    2011-06-28T23:59:59.000Z

    We present a new Fortran library to evaluate all harmonic polylogarithms up to weight four numerically for any complex argument. The algorithm is based on a reduction of harmonic polylogarithms up to weight four to a minimal set of basis functions that are computed numerically using series expansions allowing for fast and reliable numerical results.

  4. The association of the cotton fleahopper (Pseudatomoscelis seriatus Reuter (Hemiptera: Miridae)) with IAA and 1-aminocyclopropane-1- carboxylic acid and their role in cotton square abscission

    E-Print Network [OSTI]

    Burden, Beverly Jo

    1987-01-01T23:59:59.000Z

    . Norgan ) Roger W. Neola (~) Narvin K. Harris (Neaber) G. 1 (Head of Department) Nay 1987 The Association Of The Cotton Fleaho)pper (Pseudatcmosoelis seriatus Reuter Hemiptera: Niridae) ) with IAA and I-Rninocyclo)rrapane-1-carhca~lic Acid... required to stimulate abscission. . . . 32 2 The percentage of fleahoppers located cn the cotton terminals, agar, cn the side of the flask, or unlocated, at 36 Tbs cotton fleahopper, pseudatomoscelis seriatus, Reuter (Hemiptera: Miridae), is an early...

  5. advanced harmonic filter: Topics by E-print Network

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

    Hazem ZUBI Signature: 12;iv ABSTRACT LOWPASS BROADBAND HARMONIC FILTER DESIGN Zubi passive harmonic filter (IBF) for three phase diode rectifier front-end type adjustable speed...

  6. Relation of Farm Prices to Quality of Cotton.

    E-Print Network [OSTI]

    Crawford, G. L. (George Lemuel); Gabbard, L. P. (Letcher P.)

    1928-01-01T23:59:59.000Z

    to the average quality of cotton produced by each community. As an example, the average monthly price paid per pound for strict middling during October at Robstown, Hills- boro, Henderson, and Lubbock was 13.25 cents, 13 cents, 11.33 cents, and 11.09 cents..." in length; and Henderson was 97 )er cent white with 94 per cent 13/16" to 15/16" in length. This fact sug- rests the possibility of a community's materially raising its price level by mproving the quality of its cotton, particularly the staple. It is too...

  7. Stresses resulting from compression of bulk cotton lint fibers

    E-Print Network [OSTI]

    Chimbombi, Ezekiel Maswe

    1998-01-01T23:59:59.000Z

    MTS and Anthony's models 43 4. 2 Mean resilient force on the model bale per time FIGURE Page 4. 3 Ansys output of stress state in a compressed cotton bale 4. 4 Ansys output of state of strain in a compressed cotton bale 47 48 4. 5 Nodal forces... compressed bales is important so that it can be handled in the channels of trade (McCaskill and Anthony, 1977). Anthony et al. (1994) reported that the packaging system consists of a battery condenser, lint slide, lint feeder, tramper, bale press, and bale...

  8. Cost and Profit of Ginning Cotton in Texas.

    E-Print Network [OSTI]

    Paulson, W. E. (William E.)

    1942-01-01T23:59:59.000Z

    his actual cost and profit with his computed standard cost and profit may ascertain his om relative efficiency. The profit outlook of the ginning enterprise and the valuation forming the basis of purchase and sale engage the attention of bankers... as Percentages of Total Number1 Number Type of Power Year Gaso- Elec- Steam Water line Animal tric Diesel Gas Total IDepartm~nt of Commerce, Bureau of the Census: Cotton Production and Distribution, Sea- son of 1919-20, Bulletin 145, pages 36-43. Cotton...

  9. Optimization of row spacing and nitrogen fertilization for cotton

    E-Print Network [OSTI]

    Clawson, Ernest Leslie

    2004-09-30T23:59:59.000Z

    rows. One recommendation is to achieve between 247,100 to 395,360 plants per hectare for UNR cotton (BASF Corporation, 1999). In conventional cotton 74,176 to 123,550 plants per hectare has been recommended in California (Hake et al., 1996a... recommendation, not directed toward a particular state, is 247,097 to 395,355 plants ha-1 (BASF, 1999). The 76-cm row spacing plant population means in this study fell within the recommendations for conventional rows, and the 19-cm means were within...

  10. A high-fidelity harmonic drive model.

    SciTech Connect (OSTI)

    Preissner, C.; Royston, T. J.; Shu, D. (APS Engineering Support Division); ( MCS); (Univ. of Illinois)

    2012-01-01T23:59:59.000Z

    In this paper, a new model of the harmonic drive transmission is presented. The purpose of this work is to better understand the transmission hysteresis behavior while constructing a new type of comprehensive harmonic drive model. The four dominant aspects of harmonic drive behavior - nonlinear viscous friction, nonlinear stiffness, hysteresis, and kinematic error - are all included in the model. The harmonic drive is taken to be a black box, and a dynamometer is used to observe the input/output relations of the transmission. This phenomenological approach does not require any specific knowledge of the internal kinematics. In a novel application, the Maxwell resistive-capacitor hysteresis model is applied to the harmonic drive. In this model, sets of linear stiffness elements in series with Coulomb friction elements are arranged in parallel to capture the hysteresis behavior of the transmission. The causal hysteresis model is combined with nonlinear viscous friction and spectral kinematic error models to accurately represent the harmonic drive behavior. Empirical measurements are presented to quantify all four aspects of the transmission behavior. These measurements motivate the formulation of the complete model. Simulation results are then compared to additional measurements of the harmonic drive performance.

  11. Nitrogen Fertilization of Irrigated Cotton as Fertilizer Prices Climb

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Nitrogen Fertilization of Irrigated Cotton as Fertilizer Prices Climb As gasoline prices at the pump continue to climb above $ 3.00/gallon, fertilizer prices, especially Nitrogen (N) are doing the same. As of spring 2008, the price of one ton of urea ammonium nitrate was $420, or $0.67 per lb N

  12. Economics of Mechanical Cotton Stripping on Blackland Farms.

    E-Print Network [OSTI]

    Rogers, Ralph H.; Bonnen, C. A.

    1960-01-01T23:59:59.000Z

    MARCH 1960 Economics of l!kechanid~.bt ,I.CHarvesting cotton with mechanical strippers... is re economical on the Blackland Prairies than hir- ing labor crews to pull or snap by hand. An eco- nomical evaluation of machine versus hand harvest- ing covering both "good and "bad years, and years with and without acreage controls. indicates...

  13. The toxicity of certain new chlorinated hydrocarbons to cotton pests

    E-Print Network [OSTI]

    Merkl, Marvin Eugene

    1953-01-01T23:59:59.000Z

    THE TOXICITY OF CERTAIN NEW CHLORINATED HYDROCARBONS TO COTTON PESTS A Dissertation 5y MARVIN EUGENE MERKL Approved as to style and content by: Chairman of CouBlttee Head of Departnent May 19*3 THE TOXICITY OF CERTAIN NEW CHLORINATED... .....................................................78 CONCLUSIONS............................................... ..81 BIBLIOGRAPHI .............................................. ..82 Pag? FIGURES 1* Dosage-?ortality curve for the toxicity of endrin to aphids...

  14. The toxicity of certain new chlorinated hydrocarbons to cotton pests

    E-Print Network [OSTI]

    Merkl, Marvin Eugene

    1953-01-01T23:59:59.000Z

    THE TOXICITY OF CERTAIN NEW CHLORINATED HYDROCARBONS TO COTTON PESTS A Dissertation 5y MARVIN EUGENE MERKL Approved as to style and content by: Chairman of CouBlttee Head of Departnent May 19*3 THE TOXICITY OF CERTAIN NEW CHLORINATED... .....................................................78 CONCLUSIONS............................................... ..81 BIBLIOGRAPHI .............................................. ..82 Pag? FIGURES 1* Dosage-?ortality curve for the toxicity of endrin to aphids...

  15. Dual aperture dipole magnet with second harmonic component

    DOE Patents [OSTI]

    Praeg, W.F.

    1983-08-31T23:59:59.000Z

    An improved dual aperture dipole electromagnet includes a second-harmonic frequency magnetic guide field winding which surrounds first harmonic frequency magnetic guide field windings associated with each aperture. The second harmonic winding and the first harmonic windings cooperate to produce resultant magnetic waveforms in the apertures which have extended acceleration and shortened reset portions of electromagnet operation.

  16. Dual aperture dipole magnet with second harmonic component

    DOE Patents [OSTI]

    Praeg, Walter F. (Palos Park, IL)

    1985-01-01T23:59:59.000Z

    An improved dual aperture dipole electromagnet includes a second-harmonic frequency magnetic guide field winding which surrounds first harmonic frequency magnetic guide field windings associated with each aperture. The second harmonic winding and the first harmonic windings cooperate to produce resultant magnetic waveforms in the apertures which have extended acceleration and shortened reset portions of electromagnet operation.

  17. Local Harmonic Estimation in Musical Sound Rafael A. IRIZARRY

    E-Print Network [OSTI]

    Irizarry, Rafael A.

    Local Harmonic Estimation in Musical Sound Signals Rafael A. IRIZARRY Statistical modeling so a local harmonic model that tracks changes in pitch and in the amplitudes of the harmonics is fit estimates of the harmonic signal and of the noise signal. Different musical composition applications may

  18. High-Order Harmonic Generation of Heteronuclear Diatomic Molecules

    E-Print Network [OSTI]

    Chu, Shih-I

    High-Order Harmonic Generation of Heteronuclear Diatomic Molecules in Intense Ultrashort Laser ionization (MPI) and high-order harmonic generation (HHG) processes of N2 and CO molecules in intense laser of the homonuclear N2 molecule can generate only odd harmonics, both even and odd harmonics can be produced from

  19. SEVENTH HARMONIC 20 GHz CO-GENERATOR

    SciTech Connect (OSTI)

    Hirshfield, Jay L

    2014-04-08T23:59:59.000Z

    To satisfy the need for multi-MW rf sources in frequency ranges where commercial sources do not exist, a study was undertaken on a class of devices based on gyro-harmonic frequency multiplication. This mechanism relies upon adding energy in gyrating motion to a linear electron beam that traverses a rotating-mode TE111-mode drive cavity in a dc magnetic field. The beam then drifts along the magnetic field into a second cavity, operating in the TEn11-mode tuned to the nth harmonic of the drive cavity. Studies of this configuration have been carried out for 2 < n < 7. Results are given for multi-MW, efficient operation of a 7th harmonic device operating at 20 GHz, and a 2nd harmonic device operating at 22.4 GHz.

  20. SPECTRAL APPROXIMATION OF TIME-HARMONIC MAXWELL ...

    E-Print Network [OSTI]

    2014-10-25T23:59:59.000Z

    the electric permittivity, ? is the frequency of the harmonic wave, n is the unit outward normal of D ... In order to deal with more general scatterers D and non-

  1. boundary behavior of univalent harmonic mappings

    E-Print Network [OSTI]

    1910-70-32T23:59:59.000Z

    valent harmonic mapping f from the unit disk U onto a bounded convex ..... Our next result examines the stability of a function f given in The- orem 2 upon the...

  2. Localized waves with spherical harmonic symmetries

    E-Print Network [OSTI]

    Mills, M. S.

    We introduce a class of propagation invariant spatiotemporal optical wave packets with spherical harmonic symmetries in their field configurations. The evolution of these light orbitals is considered theoretically in ...

  3. Harmonizing Systems and Software Cost Estimation

    E-Print Network [OSTI]

    Wang, Gan

    2009-07-19T23:59:59.000Z

    The objective of this paper is to examine the gaps and overlaps between software and systems engineering cost models with intent to harmonize the estimates in engineering engineering estimation. In particular, we evaluate ...

  4. Harmonic Representation of Combinations and Partitions

    E-Print Network [OSTI]

    Michalis Psimopoulos

    2011-03-01T23:59:59.000Z

    In the present article a new method of deriving integral representations of combinations and partitions in terms of harmonic products has been established. This method may be relevant to statistical mechanics and to number theory.

  5. Some examples of exponentially harmonic maps

    E-Print Network [OSTI]

    A D Kanfon; A Fzfa; D Lambert

    2002-05-15T23:59:59.000Z

    The aim of this paper is to study some examples of exponentially harmonic maps. We study such maps firstly on flat euclidean and Minkowski spaces and secondly on Friedmann-Lema\\^ itre universes. We also consider some new models of exponentially harmonic maps which are coupled with gravity which happen to be based on a generalization of the lagrangian for bosonic strings coupled with dilatonic field.

  6. HARMONIC CAVITY PERFORMANCE FOR NSLS-II

    SciTech Connect (OSTI)

    BLEDNYKH, A.; KRINSKY, S.; PODOBEDOV, B.; ROSE, J.; TOWNE, N.; WANG, J.M.

    2005-05-15T23:59:59.000Z

    NSLS-II is a 3 GeV ultra-high brightness storage ring planned to succeed the present NSLS rings at BNL. Ultralow emittance combined with short bunch length means that it is critical to minimize the effects of Touschek scattering and coherent instabilities. Improved lifetime and stability can be achieved by including a third-harmonic RF cavity in the baseline design. This paper describes the required harmonic RF parameters and the expected system performance.

  7. Coherent states for the nonlinear harmonic oscillator

    SciTech Connect (OSTI)

    Ghosh, Subir [Physics and Applied Mathematics Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108 (India)

    2012-06-15T23:59:59.000Z

    Wave packets for the quantum nonlinear oscillator are considered in the generalized coherent state framework. To first order in the nonlinearity parameter the coherent state behaves very similar to its classical counterpart. The position expectation value oscillates in a simple harmonic manner. The energy-momentum uncertainty relation is time independent as in a harmonic oscillator. Various features (such as the squeezed state nature) of the coherent state have been discussed.

  8. Nonlinearly driven harmonics of Alfvn modes

    SciTech Connect (OSTI)

    Zhang, B., E-mail: bozhang@austin.utexas.edu; Breizman, B. N.; Zheng, L. J.; Berk, H. L. [Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712 (United States)] [Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712 (United States)

    2014-01-15T23:59:59.000Z

    In order to study the leading order nonlinear magneto-hydrodynamic (MHD) harmonic response of a plasma in realistic geometry, the AEGIS code has been generalized to account for inhomogeneous source terms. These source terms are expressed in terms of the quadratic corrections that depend on the functional form of a linear MHD eigenmode, such as the Toroidal Alfvn Eigenmode. The solution of the resultant equation gives the second order harmonic response. Preliminary results are presented here.

  9. Harmonic Functions are Real Analytic1 On this very short note we prove that harmonic functions are real analytic functions.

    E-Print Network [OSTI]

    Cabral, Marco

    Harmonic Functions are Real Analytic1 On this very short note we prove that harmonic functions prove Lemma 1 using the mean value property of harmonic functions, Green's theorem and the maximum principle. Lemma 1 (estimate on first derivative) Suppose w is harmonic in Rn , > 0, y and B

  10. Economic Implications of a Delayed Uniform Planting Date for Cotton Production in the Texas Rolling Plains.

    E-Print Network [OSTI]

    Masud, Sharif M.; Lacewell, Ronald D.; Boring, Emory P.; Fuchs, Thomas W.

    1984-01-01T23:59:59.000Z

    economic impact was estimated by multiplying the gross revenue chan~es by the respective regional and state production multipliers. The following equation was used to estimate regional and state economic impact: Regional or State Impact = (GR1 x Mct... ) + (GR2 x Mct ) - (GR3 x Mgs) - (GR4 x Mcl where: GR1 = GR2 = increase in cotton revenue from typical cotton acreage, increase total cotton revenue from acres of other crops converted to cotton, 1 Production multipliers are estimates of the total...

  11. Influence of glyphosate on growth and yield of glyphosate-tolerant cotton

    E-Print Network [OSTI]

    Viator, Ryan Patrick

    2001-01-01T23:59:59.000Z

    Transgenic cotton (Gossypium hirsutum L.) cultivars expressing herbicide tolerance to topical applications of herbicides are commercially available. It has been documented that under certain conditions, applications of ...

  12. Effects of salinity and nitrogen on cotton growth in arid environment

    E-Print Network [OSTI]

    Chen, Weiping; Hou, Zhenan; Wu, Laosheng; Liang, Yongchao; Wei, Changzhou

    2010-01-01T23:59:59.000Z

    15 absorption, and water uptake by green bean under sodiumbean and salt-tolerant cotton. Plant Physiol 105:14091418 Homaee M, Schmidhalter U (2008) Water

  13. The economic simulation of cotton gins in the Lower Rio Grande Valley of Texas and Tamaulipas, Mexico

    E-Print Network [OSTI]

    White, Duboise

    1994-01-01T23:59:59.000Z

    The objective of this study was to compare the cost of cotton ginning in the Lower Rio Grande Valley of Texas with the cost of cotton ginning in Tamaulipas, Mexico. GINMODEL, an economic-engineering model, was used to ...

  14. Use of juvenoid insect growth regulators for management of cotton aphid, Aphis gossypii Glover, and silverleaf whitefly, Bemisia sp., populations

    E-Print Network [OSTI]

    Satoh, Gordon Takeo

    1993-01-01T23:59:59.000Z

    Studies were conducted on developmental, reproductive, population, and organophosphate insecticide susceptibility effects of juvenoid insect growth regulators OIGRS) on two homopteran pest insects of cotton: cotton aphid, Aphis gossypii Glover...

  15. Interactive Effects of Geography and Host Plant Species on Genetic and Phenotypic Variation of Cotton Fleahopper Populations

    E-Print Network [OSTI]

    Barman, Apurba

    2012-02-14T23:59:59.000Z

    in the southern United States. No studies have addressed intraspecific genetic and phenotypic variation of this insect pest at a large geographic scale. I examined genetic variation among cotton fleahopper populations associated with cotton in different...

  16. High-harmonic spectroscopy of molecular isomers

    SciTech Connect (OSTI)

    Wong, M. C. H.; Brichta, J.-P.; Bhardwaj, V. R. [Department of Physics, University of Ottawa, 150 Louis-Pasteur, Ottawa, Ontario, K1N 6N5 (Canada); Spanner, M.; Patchkovskii, S. [National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario, K1A 0R6 (Canada)

    2011-11-15T23:59:59.000Z

    We demonstrate that high-order-harmonic generation (HHG) spectroscopy can be used to probe stereoisomers of randomly oriented 1,2-dichloroethylene (C{sub 2}H{sub 2}Cl{sub 2}) and 2-butene (C{sub 4}H{sub 8}). The high-harmonic spectra of these isomers are distinguishable over a range of laser intensities and wavelengths. Time-dependent numerical calculations of angle-dependent ionization yields for 1,2-dichloroethylene suggest that the harmonic spectra of molecular isomers reflect differences in their strong-field ionization. The subcycle ionization yields for the cis isomer are an order of magnitude higher than those for the trans isomer. The sensitivity in discrimination of the harmonic spectra of cis- and trans- isomers is greater than 8 and 5 for 1,2-dichloroethylene and 2-butene, respectively. We show that HHG spectroscopy cannot differentiate the harmonic spectra of the two enantiomers of the chiral molecule propylene oxide (C{sub 3}H{sub 6}O).

  17. Second Harmonic Generation and Confined Acoustic Phonons in Highly Excited Semiconductor Nanocrystals

    E-Print Network [OSTI]

    Son, Dong Hee; Wittenberg, Joshua S.; Banin, Uri; Alivisatos, A. Paul

    2006-01-01T23:59:59.000Z

    Second harmonic generation and confined acoustic phonons inenhancement of second harmonic generation, and the effect ofmeasurements. The second harmonic signal showed a sublinear

  18. The recovery of the recurrent parent in upland cotton

    E-Print Network [OSTI]

    Rosenbaum, Ross Corbet

    2003-01-01T23:59:59.000Z

    ABSTRACT The Recovery of the Recurrent Parent in Upland Cotton. (December 2003) Ross Corbet Rosenbaum, B. S. , Texas A&M University Chair of Advisory Committee: Dr. C. Wayne Smith Breeders have made numerous improvements in upland cotton (Gossypium... 0072 0074 5. 09 A 5. 08 A 4. 87 A 4. 60 B 4. 87 A 4. 93 A 5. 33 A 5. 17 A 4. 98 A 5. 54 A 4. 93 A 5. 25 A 5. 37 A 4. 97 BC 4. 78 A 5. 28 A 4, 76 A 4. 82 A 4. 45 AB 5. 43 A 4. 96 A 4. 93 A 5. 20 A a-f * b-f d-h gh d-h c-g a...

  19. Progress report for the commercialization of a one pass cotton plowdown. Technical progress report, April--June 1996

    SciTech Connect (OSTI)

    NONE

    1996-07-28T23:59:59.000Z

    Progress is described on the design, performance, and commercialization of a one pass cotton plowdown machine. Photos are included.

  20. A Chemical Study of Varieties of Cotton Seed.

    E-Print Network [OSTI]

    Harrington, M. T. (Marion Thomas)

    1928-01-01T23:59:59.000Z

    . The other data are compiled from the literature. Table 1.-Some characteristics of varieties of cotton. Burnett Group includes : Burnett, B-9-1, Westex. Delfos Group includes: Delfos, Delfos 633, Delfos 1374, Delfoq 610? Lone Star Group includes: Lone... Star, Startex, Lanlihart, Russell. Mebane Group includes: Anton, Blue Wagon, Cliett, Harper, JCasch, Mebane, nfueck, New Boykin. Name BurnettGroup ................................... DelfosGroup .................................... Lone Star Group...

  1. Cotton Variety Experiments at Substation No. 2, Troup.

    E-Print Network [OSTI]

    Hotchkiss, W. S.; Johnson, P. R. (Paul Rufus)

    1930-01-01T23:59:59.000Z

    . ...................... ............................ Lone Star .................... Hawkln's Prolific.. .................. Cleveland Big Boll.. Lone Star ............................. Percentage of lint Results in 1917 No. of bolls per lb. Fifty-three varieties were tested in 1917, and data... Type Mebane or Triumph Truitt Rowden Lone Star Acala Half and Half The varieties tested each year are arranged in the tables according to their rank in yield of lint cotton. Tables 3 to 6, inclusive, give information on the percentage of lint...

  2. Investigations on Control of the Cotton Flea Hopper in 1927.

    E-Print Network [OSTI]

    Reinhard, H. J. (Henry Jonathan); Owen, W. L. (William Ludwell)

    1928-01-01T23:59:59.000Z

    on comparison of materials in dry or daytime applications at ?'-day intervals using superfine dusting sulphur, "L" grade tobacco dust, and 5050 mixtures of sulphur-tobacco dust "L" grade and sulphur-lime. One 4-plat series on combination dew applications... and "L" grade tobacco dust were applied under similar conditions on separate plats to determine the effectiveness of these materials in controlling the insect. No appreciable reduction in the number of cotton flea hoppers occurred on any of the plats...

  3. Linkage relations of certain characters in Upland cotton

    E-Print Network [OSTI]

    McFarland, Edwin Francis

    1952-01-01T23:59:59.000Z

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ FISHES 1. Summary at tiufiage ot ~s eteiy LINKAGE BELATIONS OF CERTAIN CHABACI%% IN UPLQID COTTON A thorough knowledge of the inheritance of specific charactexs snd tbeix inter-relatioushipx is of prise importance in successful expA- mentation...- ge . However, two cases of relatively close linkage have been reported. Thadauf (1923) found a linkage of the chaxacters rect plant body and clus- tex' habit He dfd uot recovex' the double recessive class ln ths FB Essex' ation and. therefore...

  4. Price-Quality Relationships in Farmers' Cotton Markets of Texas.

    E-Print Network [OSTI]

    Paulson, W. E. (William E.); Hembree, Joel F. (Joel Franklin)

    1934-01-01T23:59:59.000Z

    , UNITED STATES DEPARTMENT OF AGRICULTURE Price-Quality Relationships in Farmers' Cotton Markets of Texas AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS T. 0. WALTON, President STATION STAFFt Administration: A. B. Conner, M. S ., Director R. E. Karper... Boyd, B. S., Asst. Plant Pathologist Farm and Ranch Economics: L. P. Gabbard, M. S., Chief W. E. Paulson, Ph. D., Marketing C. A. Bonnen, M. S., Farm Management t??w. R. Nisbet, B. S., Ranch Management ??A. C. Magee, M. S., Ranch Management Rural...

  5. Isolation and culture of protoplasts from cotton cell cultures

    E-Print Network [OSTI]

    Finer, John James

    1981-01-01T23:59:59.000Z

    Isolation Protoplast Purification . Plating of Protoplasts Potential Uses of Plant Protoplasts 0 10 12 MATERIALS AND METHODS 15 Establishment of Cotton Callus Culture Isolation of Protoplasts 15 15 Determination of Protoplast Isolation... are very dense and can hurst through the thin plasmalemma during purification by centrifugation. Since in the dark the starch is degraded for energy, protoplast isolation efficiency increases following incubation of light grown photosynthetic plants...

  6. Resonant high-order harmonic generation from plasma ablation: Laser intensity dependence of the harmonic intensity and phase

    SciTech Connect (OSTI)

    Milosevic, D. B. [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina); Max-Born-Institut, Max-Born-Str. 2a, D-12489 Berlin (Germany)

    2010-02-15T23:59:59.000Z

    Experimentally observed strong enhancement of a single high-order harmonic in harmonic generation from low-ionized laser plasma ablation is explained as resonant harmonic generation. The resonant harmonic intensity increases regularly with the increase of the laser intensity, while the phase of the resonant harmonic is almost independent of the laser intensity. This is in sharp contrast with the usual plateau and cutoff harmonics, the intensity of which exhibits wild oscillations while its phase changes rapidly with the laser intensity. The temporal profile of a group of harmonics, which includes the resonant harmonic, has the form of a broad peak in each laser-field half cycle. These characteristics of resonant harmonics can have an important application in attoscience. We illustrate our results using examples of Sn and Sb plasmas.

  7. Plasmon signatures in high harmonic generation

    E-Print Network [OSTI]

    J. Zanghellini; Ch. Jungreuthmayer; T. Brabec

    2005-12-12T23:59:59.000Z

    High harmonic generation in polarizable multi-electron systems is investigated in the framework of multi-configuration time-dependent Hartree-Fock. The harmonic spectra exhibit two cut offs. The first cut off is in agreement with the well established, single active electron cut off law. The second cut off presents a signature of multi-electron dynamics. The strong laser field excites non-linear plasmon oscillations. Electrons that are ionized from one of the multi-plasmon states and recombine to the ground state gain additional energy, thereby creating the second plateau.

  8. Spherical Harmonic Decomposition on a Cubic Grid

    E-Print Network [OSTI]

    Charles W. Misner

    1999-10-12T23:59:59.000Z

    A method is described by which a function defined on a cubic grid (as from a finite difference solution of a partial differential equation) can be resolved into spherical harmonic components at some fixed radius. This has applications to the treatment of boundary conditions imposed at radii larger than the size of the grid, following Abrahams, Rezzola, Rupright et al.(gr-qc/9709082}. In the method described here, the interpolation of the grid data to the integration 2-sphere is combined in the same step as the integrations to extract the spherical harmonic amplitudes, which become sums over grid points. Coordinates adapted to the integration sphere are not needed.

  9. Polymers, both natural and synthetic, play an integral role in our daily lives. Naturally-occurring polymers include cellulose (mentioned in gun cotton demo), rubber, skin, hair,

    E-Print Network [OSTI]

    Weston, Ken

    . Naturally- occurring polymers include cellulose (mentioned in gun cotton demo), rubber, skin, hair, DNA, etc

  10. Microseismic mapping of a Cotton Valley hydraulic fracture using decimated downhole arrays J.T. Rutledge

    E-Print Network [OSTI]

    Microseismic mapping of a Cotton Valley hydraulic fracture using decimated downhole arrays J three hydraulic fracture operations in the Cotton Valley gas field of East Texas. Two 48-level, 3 a consortia of operators and service companies conducted an extensive hydraulic fracture imaging demonstration

  11. Effects of Planter Attachments and Seed Treatment on Stands of Cotton.

    E-Print Network [OSTI]

    Byrom, Mills H. (Mills Herbert); Smith, H. P. (Harris Pearson)

    1942-01-01T23:59:59.000Z

    problems of the cotton grower. T"hat the soil must be sufficiently .crami~erl up in the spring and that ample moisture must be present in a well pr'epnrcrl seedbed is thorondlly nnderasto~l by cotton farmers. The type of equipment and the adjustment...

  12. The role of grain sorghum in conservation of predatory arthropods of Texas cotton

    E-Print Network [OSTI]

    Prasifka, Jarrad Reed

    2004-09-30T23:59:59.000Z

    to determine if prey abundance or phenology influenced the movement of H. convergens into cotton. In both years, more lady beetle adults were collected on cotton during the latest stages of sorghum phenology. In the second year, relatively low aphid densities...

  13. Cotton Response to Low Rates of 2,4-D and Other Herbicides.

    E-Print Network [OSTI]

    Smith, D. T.; Wiese, A. F.

    1972-01-01T23:59:59.000Z

    E-1120 May 1972 LIBRARY [\\Lib4 2 b IYl2 Texas A&M University COTTON RESPONSE TO LOW RATES OF 2,4-D AND OTHER HERBICIDES TEXAS AQM UNIVERSITY THE TEXAS AGRICULTURAL EXPERIMENT STATION H. 0. Kunkel, Acting Director, College Station, Texas... ....' m Results and Discussion ...... : .............................................. ........... Cotton Response to Herbicide Spray Drift 2,4-D ........................................................................ ' Dicamba...

  14. accounting standards harmonization: Topics by E-print Network

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

    numbers were Introduced by Ore 6 In 1948, though not under that name. A natural number n is harmonic if the harmonic mean of its positive divisors is an integer....

  15. Second Harmonic Generation Studies of Fe(II) Interactions with...

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

    Second Harmonic Generation Studies of Fe(II) Interactions with Hematite (?-Fe2O3). Second Harmonic Generation Studies of Fe(II) Interactions with Hematite (?-Fe2O3)....

  16. Parametric Estimation of Harmonically Related Sinusoids

    E-Print Network [OSTI]

    Dixit, Richa

    2010-04-01T23:59:59.000Z

    Mud-pulse telemetry is a method used for measurement-while-drilling (MWD)in the oil industry. The telemetry signals are corrupted by spurious mud pump noise consisting of a large number of harmonically related sinusoids. In order to denoise...

  17. Harmonic Fluids Changxi Zheng Doug L. James

    E-Print Network [OSTI]

    Columbia University

    Harmonic Fluids Changxi Zheng Doug L. James Cornell University Abstract Fluid sounds- ing. Furthermore, while offline applications can rely on talented foley artists to "cook up" plausible for vortex-based fluid sounds [Dobashi et al. 2003] and solid bodies [O'Brien et al. 2001; James et al. 2006

  18. Markovian evolution of strongly coupled harmonic oscillators

    E-Print Network [OSTI]

    Chaitanya Joshi; Patrik Ohberg; James D. Cresser; Erika Andersson

    2014-12-16T23:59:59.000Z

    We investigate how to model Markovian evolution of coupled harmonic oscillators, each of them interacting with a local environment. When the coupling between the oscillators is weak, dissipation may be modeled using local Lindblad terms for each of the oscillators in the master equation, as is commonly done. When the coupling between oscillators is strong, this model may become invalid. We derive a master equation for two coupled harmonic oscillators which are subject to individual heat baths modeled by a collection of harmonic oscillators, and show that this master equation in general contains non-local Lindblad terms. We compare the resulting time evolution with that obtained for dissipation through local Lindblad terms for each individual oscillator, and show that the evolution is different in the two cases. In particular, the two descriptions give different predictions for the steady state and for the entanglement between strongly coupled oscillators. This shows that when describing strongly coupled harmonic oscillators, one must take great care in how dissipation is modeled, and that a description using local Lindblad terms may fail. This may be particularly relevant when attempting to generate entangled states of strongly coupled quantum systems.

  19. Compatibility of radial, Lorenz and harmonic gauges

    E-Print Network [OSTI]

    Elena Magliaro; Claudio Perini; Carlo Rovelli

    2007-05-07T23:59:59.000Z

    We observe that the radial gauge can be consistently imposed \\emph{together} with the Lorenz gauge in Maxwell theory, and with the harmonic traceless gauge in linearized general relativity. This simple observation has relevance for some recent developments in quantum gravity where the radial gauge is implicitly utilized.

  20. A Low Total Harmonic Distortion Sinusoidal Oscillator Based on Digital Harmonic Cancellation Technique

    E-Print Network [OSTI]

    Yan, Jun

    2012-07-16T23:59:59.000Z

    design methodology of sinusoidal oscillator named digital-harmonic-cancellation (DHC) technique is presented. DHC technique is realized by summing up a set of square-wave signals with different phase shifts and different summing coefficient to cancel...

  1. Physics 5B Winter 2009 Solving the Simple Harmonic Oscillator

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Physics 5B Winter 2009 Solving the Simple Harmonic Oscillator 1. The harmonic oscillator solution: displacement as a function of time We wish to solve the equation of motion for the simple harmonic oscillator shall employ for solving this di#erential equation is called the method of inspired guessing. In class

  2. Physics 5B Winter 2009 Solving the Simple Harmonic Oscillator

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Physics 5B Winter 2009 Solving the Simple Harmonic Oscillator 1. The harmonic oscillator solution: displacement as a function of time We wish to solve the equation of motion for the simple harmonic oscillator employ for solving this differential equation is called the method of inspired guessing. In class, we

  3. Selective compensation of voltage harmonics in grid-connected microgrids

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    1 Selective compensation of voltage harmonics in grid-connected microgrids Mehdi Savaghebia , Juan is proposed for selective compensation of main voltage harmonics in a grid- connected microgrid. The aim level. Keywords Distributed Generator (DG); microgrid; grid-connected; voltage harmonics compensation. 1

  4. Approximation of Harmonic Maps and Wave Maps Soren Bartels

    E-Print Network [OSTI]

    Bartels, Soeren

    Approximation of Harmonic Maps and Wave Maps S¨oren Bartels Partial differential equations to certain boundary condtions. If X = then critical points u : N are called harmonic maps into N, ·) = u0, tu(0, ·) = v0. To approximate harmonic maps or wave maps we consider a regular triangula- tion

  5. Isolated attosecond pulses using a detuned second-harmonic field

    E-Print Network [OSTI]

    Neumark, Daniel M.

    Isolated attosecond pulses using a detuned second-harmonic field Hamed Merdji,1,2, * Thierry 2 . The slight detuning of the second harmonic is used to break the symmetry of the electric field-order harmonics generation (HHG) of intense laser pulses in gases is attracting much attention due to both

  6. Tracking butterfly flight paths across the landscape with harmonic radar

    E-Print Network [OSTI]

    Northampton, University of

    Tracking butterfly flight paths across the landscape with harmonic radar E. T. Cant1,*, A. D. Smith of five butterfly species were successfully tracked using harmonic radar within an agricultural landscape. Keywords: butterfly flight; harmonic radar; linear landscape features; Aglais urticae; Inachis io 1

  7. The Harmonic Series Diverges Again and Again Steven J. Kifowit

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    The Harmonic Series Diverges Again and Again Steven J. Kifowit Prairie State College Terra A. Stamps Prairie State College The harmonic series, n=1 1 n = 1 + 1 2 + 1 3 + 1 4 + 1 5 + · · · , is one, the harmonic series provides the instructor with a wealth of opportunities. The leaning tower of lire (Johnson

  8. Second harmonic imaging of membrane potential of neurons with retinal

    E-Print Network [OSTI]

    Columbia University

    Second harmonic imaging of membrane potential of neurons with retinal Boaz A. Nemet Volodymyr of neurons, using the nonlinear optical phenom- enon of second harmonic generation (SHG) with a photopigment reti- nal as the chromophore [second harmonic retinal imaging of mem- brane potential (SHRIMP)]. We

  9. Harmonic moment dynamics in Laplacian growth Alexander Leshchiner,1

    E-Print Network [OSTI]

    Texas at Austin. University of

    Harmonic moment dynamics in Laplacian growth Alexander Leshchiner,1 Matthew Thrasher,1 Mark B received 12 November 2009; published 12 January 2010 Harmonic moments are integrals of integer powers of z horizontal closely spaced plates. Harmonic moments are a natural basis for such Laplacian growth phenomena

  10. Temporal-Harmonic Specific POD Mode Extraction Gilead Tadmor

    E-Print Network [OSTI]

    Dabiri, John O.

    Temporal-Harmonic Specific POD Mode Extraction Gilead Tadmor and Daniel Bissex Electrical changes the systems mean field changes significantly, as does the leading shedding harmonic4 , once mode pair will capture harmonically rich time dynamics, reflecting a spatial mix of multiple vortical

  11. Species composition and seasonal abundance of stink bugs in cotton in the Lower Texas Gulf Coast and the virulence of Euschistus species to cotton

    E-Print Network [OSTI]

    Hopkins, Bradley Wayne

    2006-04-12T23:59:59.000Z

    Integrated Pest Management Program, and Cotton, Inc. are appreciated. I would like to thank Leland Lange, Charles and Brian Ring, John Barrett, and the other farmers of Kleberg, Nueces, San Patricio, Refugio, Victoria, and Calhoun Counties who allowed me... little to no effect on piercing/sucking insects, stink bugs have become annual mid- to late-season cotton pests (Roach 1988, Greene and Turnipseed 1996, Roberts 1999, Boethel 2000). Through the effective implementation of boll weevil eradication...

  12. The Influence of Moisture and Temperature on Cotton Root Rot.

    E-Print Network [OSTI]

    Taubenhaus, J. J. (Jacob Joseph); Dana, B. F. (Bliss F.)

    1928-01-01T23:59:59.000Z

    . BAYLES, B. S., Superintendent J. PAUL LUSK, S. M., Plant Patholog Teachers in the School of Arnicultnre Carryine Coo~erative Projects on the Statit -- . G W ADRIANCE M S ~srociate~~rofessor of Horticulture S ' W 'BI~SING ~h D 'kro&sor of Entomology V... of the season. This initial moisture supply, together mith the additions during the growing season, permitted the continued development of root rot throughout the entire season. ,It the INFLUENCE OF MOISTURE AND TEMPERATURE ON COTTON ROOT ROT 9 end...

  13. Responses of Cotton to 2,4-D.

    E-Print Network [OSTI]

    Dunlap, A. A. (Albert Atkinson); Ergle, David R. (David Ramsey)

    1949-01-01T23:59:59.000Z

    electrometrically between the limits of pH 7.8 and pH 2.6 (12). The individual organic acids, (citric, malic and oxalic) , were determined by the methods of Pucher, et al., (13). The quantity of the unknown or unidentified acid fraction was obtained... by substracting the sum of citric, malic, and oxalic acids from the determined value for total organic acids. RESULTS For ,llllpLicity of presentation, the equivalent amounts of 2,4-D acid applied to the cotton leaves, 0.002, 0.01, 0.02 and 0.04 milligram...

  14. Cotton Variety Experiments at the Main Station 1912 to 1922.

    E-Print Network [OSTI]

    Stroman, G. N. (Govan Napoleon)

    1924-01-01T23:59:59.000Z

    of Veterinary Medicine. **In cooperation with United States Department of Agriculture. COTTON VARIETY EXPERIMENTS AT THE MAIN STA'I'ION 1912 to 1922 G. N. Stroman Variety tests are important for two reasons: (1) to find the varietjr which is best adapted...; and for other periods of years. Also, for three varie- ties, Lone Star, Rowden, and Mebane, which were grown during the entire eleven years, 1912 to 1922 inclusive, average yields are shown for the eleven-year period. In order that the varieties may be justly...

  15. Biometrical Studies of Lint and Seed Characters in Cotton.

    E-Print Network [OSTI]

    Stroman, G. N. (Govan Napoleon)

    1925-01-01T23:59:59.000Z

    cooperation with United States Department of Agriculture. SYNOPSIS This in an Th bolls p practic A 1 A1 seed, Y of five- nnrl nn I'his is a statistical study of sixteen varieties of cotton grown in the regular variety test plats on the Main... variety ~y character. in mean yield of Iint Bennett's Lone Star led all varieties but was the variable. Mebane was a close second in yield and showed mediam ~bility. [n mean yield of seed Belton led all varieties but was the most vari- awe. Bennett...

  16. Insects Mistaken for the Mexican Cotton Boll Weevil.

    E-Print Network [OSTI]

    Sanderson, E. Dwight (Ezra Dwight)

    1904-01-01T23:59:59.000Z

    -weevil , about one- fourth (%) an inch long with slightly curved snout, somewhat over one-third the length of the body, the fore femora with a single sharp tooth. These beetles burrow just underneath the bark of dead and dying elm limbs. Specimens have been... to describe the more conlrnon of these insects, their habits, and how they may be distinguished from the Boll Weevil. THE COTTON BOLL WEEVIL DESCRIBED. (Ant honomus grnndis Boh . ) The Boll Weevil belongs to the family of Snout Beetles or Weevils known...

  17. Varieties of Cotton in the Red Prairies of Northwest Texas.

    E-Print Network [OSTI]

    Quinby, John Roy

    1927-01-01T23:59:59.000Z

    . NORTHCUTT. JR., B. S.. Feed Inspedor SIDNEY D. REYNOLDS. JR.. Feed Inspector P. A. MOORE, Feed Inspector SUBSTATIONS No. 1 Beerille, Bee County: R. A. HALL, B. S.. Superintendent o. 10. Ftsdfng and Breeding Station. near College Station. Brazos Connty... OF COTTON IN THE RED PRAIRIES OF NORTH- WEST TEXAS Substation No. 12 of the Texas Agricultural Experiment Station is located in the eastern part of Hardeman County southwest of Chilli- cothe about midway between the Red and Pease Rivers, and in the seo...

  18. Control and Spring Emergence of the Cotton Flea Hopper.

    E-Print Network [OSTI]

    Reinhard, H. J. (Henry Jonathan)

    1927-01-01T23:59:59.000Z

    in experiments on control of the cotton flea hopper by the use of insecticides ap- plied as dusts and as sprays under field conditions. Superfine dusting sulphur, flowers of sulphur, Niagara sulphur-naphtha- lene, and mixtures of sulphur-tobacco dust resulted... in an aver- age daily control ranging from 68 to 75 per cent. When applied at the rate of 20 pounds per acre it was found that these dusts remained effective in preventing multiplication of the insects for a period of six or seven days under favorable...

  19. Cotton Variety Experiments: Substation No. 3, Angleton, Texas

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner)

    1921-01-01T23:59:59.000Z

    TEXAS AfiRlCULTURAL EXPERIMENT STATION AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS ' W. B. BIZZELL, President BULLETIN NO. 274 FEBRUARY, 1921 DIVISION OF AGRONOMY COTTON VARIETY EXPERIMENTS SUBSTATION NO. 3, ANGLETON, TEXAS B. YOUNGBLOOD..... Chief SOIL SURVEY **W. T. CARTER. JR., B, S.. Chief T. M RTJRNNELL. R. S., Soil Surve~or H. W. HAWKER. Soil Sr~rneuar SUBSTATIONS No..l. Beeville. Bee County No. 8. Lubbock. Lubbock County I. E. COWART, M. S., Superintendent H. E. KARPER. B. S...

  20. Tenure and Mechanization of the Cotton Harvest, Texas High Plains.

    E-Print Network [OSTI]

    Metzler, William H.; Adkins, William G.

    1955-01-01T23:59:59.000Z

    land land 1948 The 1951 experience suggested that the free- 1949 .80 .2 1 5.25 15.95 dom of choice of tenants as to method of harvest .98 .61 4.90 6.90 was restricted somewhat by previous agreements with landlords as to types of cotton..., Morgan and Rogers for 1947, - - Thirty-one of the rental agreements, or 13 1948~and 1949: ' percent, called for payment of all ginning costs. Fifteen of these, however, were cash tenants; thus only 16, or about 7 percent, of the share ten- ants paid...

  1. Relation of Soil Acidity to Cotton Root Rot.

    E-Print Network [OSTI]

    Taubenhaus, J. J. (Jacob Joseph); Ezekiel, Walter N. (Walter Naphtali); Fudge, J. F. (Joseph Franklin)

    1937-01-01T23:59:59.000Z

    by addi- tions of sulpliur, sulphuric acid, calcium saall~hate, or ammonium snlphate, or toward alkalinity by additions of lime or sodium car- bonate. In general, the soils made acid were found to be unfal-or- able, and the soils made alkaline were... of the deeper soil, with the surface layer left alkaline, did not eradicatc the discase. Sulphur mixed into soil in field plats reduced the percentage of root rot on cotton plants but clicl not eradicate it. Sulphur applied in the surface soil finally made...

  2. Texas Root Rot of Cotton and Methods of its Control.

    E-Print Network [OSTI]

    Taubenhaus, J. J. (Jacob Joseph); Killough, D. T. (David Thornton)

    1923-01-01T23:59:59.000Z

    AND PHYSIOLOGY J. J. TAUBENHAUS, Ph. D.. Chief COTTON BREEDING SCr IZ FREEMAN. D. SC.. Chief (1)E. P. HUMBERT, Ph. D.. Acting Chi H. E. REA. B. S., Plant Breeder ANIMAL INDUSTRY FARM AND RANCH ECONOMICS J M JONES A M Chief L. P. GABBARD. M. S.. Farm... S. Ph. D. Director J. D . SUNKEL, Dairyman F: D. FULLER. M. S . dhief Inspector SOIL SURVEY S. D. PEARCE. Inspector J. H. ROGERS, Inspector **W. T. CARTER, JR.,.B. S.. Chief W. H. WOOD. Inspector H. W. HAWKER. Sell Surveyor J. J. KELLY, Insn...

  3. The magnesium nutrition of cotton as influenced by sodium

    E-Print Network [OSTI]

    Thenabadu, Mervyn Wellesly

    1964-01-01T23:59:59.000Z

    1964 Major Subject. Plant Physic logy THE MAGNESIUM NUTRITION OF COTTON AS INFLUENCED BY SODIUM A Thesis By MERVYN M. THENABADU Approved as to style and content by: Chairman of Commi. e Nun Head of Department Member Mem, er Member Member... REVIEW OF LITERATURE (a) Sodium as a plant nutrient (b) I'he role of magnesium in plant nutrition MATERIALS AND METHODS RESUL:S DISCUSSION 13 21 24 (a) The effect of treatments on grcwth and reproduction (b) The effect of treatments on the ccr...

  4. Cotton County, Oklahoma: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformationNew|Core Analysis AtSystems |CostaCotton County, Oklahoma:

  5. Pipe-type cable ampacities in the presence of harmonics

    SciTech Connect (OSTI)

    Palmer, J.A.; Degeneff, R.C. (Rensselaer Polytechnic Inst., Troy, NY (United States)); McKernan, T.M.; Halleran, T.M. (Consolidated Edison Co. of NY, Inc., New York, NY (United States))

    1993-10-01T23:59:59.000Z

    This paper explores the effect of harmonics on HPFF pipe-type transmission cable ampacity. Industry currently calculates the current carrying capacity of underground cable based on the assumption of a purely sinusoidal 60k Hz. current. However, increasing levels of harmonics on power systems have raised concern about their effect on cable ampacities. The issue has already been addressed for distribution cables. This paper begins with a discussion of Neher and McGrath's classic equations and some recent revisions, and develops a closed form composite equations accurately reflecting the effect of harmonics. The effect of frequency on the loss ratio is shown and supported by comparison with measured data at 60 Hz. and a finite element analysis at a number of harmonic frequencies. The effect of specific harmonic scenarios is shown in light of the IEEE standard on harmonics. The results are used to develop a derating factor to compensate for current harmonics on transmission systems.

  6. Generalized harmonic formulation in spherical symmetry

    E-Print Network [OSTI]

    Evgeny Sorkin; Matthew W. Choptuik

    2010-04-30T23:59:59.000Z

    In this pedagogically structured article, we describe a generalized harmonic formulation of the Einstein equations in spherical symmetry which is regular at the origin. The generalized harmonic approach has attracted significant attention in numerical relativity over the past few years, especially as applied to the problem of binary inspiral and merger. A key issue when using the technique is the choice of the gauge source functions, and recent work has provided several prescriptions for gauge drivers designed to evolve these functions in a controlled way. We numerically investigate the parameter spaces of some of these drivers in the context of fully non-linear collapse of a real, massless scalar field, and determine nearly optimal parameter settings for specific situations. Surprisingly, we find that many of the drivers that perform well in 3+1 calculations that use Cartesian coordinates, are considerably less effective in spherical symmetry, where some of them are, in fact, unstable.

  7. Prolate spheroidal harmonic expansion of gravitational field

    SciTech Connect (OSTI)

    Fukushima, Toshio, E-mail: Toshio.Fukushima@nao.ac.jp [National Astronomical Observatory, Ohsawa, Mitaka, Tokyo 181-8588 (Japan)

    2014-06-01T23:59:59.000Z

    As a modification of the oblate spheroidal case, a recursive method is developed to compute the point value and a few low-order derivatives of the prolate spheroidal harmonics of the second kind, Q{sub nm} (y), namely the unnormalized associated Legendre function (ALF) of the second kind with its argument in the domain, 1 < y < ?. They are required in evaluating the prolate spheroidal harmonic expansion of the gravitational field in addition to the point value and the low-order derivatives of P-bar {sub nm}(t), the 4? fully normalized ALF of the first kind with its argument in the domain, |t| ? 1. The new method will be useful in the gravitational field computation of elongated celestial objects.

  8. Harmonic polylogarithms for massive Bhabha scattering

    E-Print Network [OSTI]

    M. Czakon; J. Gluza; T. Riemann

    2005-08-19T23:59:59.000Z

    One- and two-dimensional harmonic polylogarithms, HPLs and GPLs, appear in calculations of multi-loop integrals. We discuss them in the context of analytical solutions for two-loop master integrals in the case of massive Bhabha scattering in QED. For the GPLs we discuss analytical representations, conformal transformations, and also their transformations corresponding to relations between master integrals in the s- and t-channel.

  9. ${\\cal D}$-deformed harmonic oscillators

    E-Print Network [OSTI]

    F. Bagarello; F. Gargano; D. Volpe

    2014-12-30T23:59:59.000Z

    We analyze systematically several deformations arising from two-dimensional harmonic oscillators which can be described in terms of $\\cal{D}$-pseudo bosons. They all give rise to exactly solvable models, described by non self-adjoint hamiltonians whose eigenvalues and eigenvectors can be found adopting the quite general framework of the so-called $\\cal{D}$-pseudo bosons. In particular, we show that several models previously introduced in the literature perfectly fit into this scheme.

  10. Behavioral and electrophysiological responses of Campoletis sonorensis Cameron (Hymenoptera: Ichneumonidae) to cotton (Gossypium hirsutum L.) and some cotton volatile chemicals

    E-Print Network [OSTI]

    Baehrecke, Eric Harald

    1988-01-01T23:59:59.000Z

    was verified by gas chromatography prior to EAG studies. Methods and Materials Chemical stimuli Chemicals tested as olfactory stimuli are listed in Table 3. Previous studies have shown that cotton cultivar Stoneville 213, the variety used in behavioral... and was followed by the application of a standard. Green leaf chemicals were presented in 1. 0 ug doses while the mono- and sesquiterpenes were tested at 1. 0 and 10. 0 ug doses. Test chemicals were applied in a sequence within each of the three chemical groups...

  11. Basic Marketing of Texas Cotton: Forward Contracts, Cash Sales, Marketing Pools, and the USDA Loan Program

    E-Print Network [OSTI]

    Robinson, John; Park, John; Smith, Jackie; Anderson, Carl

    2006-10-10T23:59:59.000Z

    as consider hedging with futures and options. Forward Contracts A forward contract is a legal agreement that specifi es either the price or the basis for a quantity (either bales or acreage) and quality of cotton delivered by a future date. Cotton merchants... use forward contracts to guarantee minimum supplies at an established price in order to make sale commitments to end users. Forward contracts are not used in Texas as much as in other parts of the Cotton Belt (Table 1) because the contracting...

  12. Cotton hedging strategies using prices for Texas High Plains and Rio Grande Valley areas

    E-Print Network [OSTI]

    Howard, John V

    1979-01-01T23:59:59.000Z

    Strategies. 88 18 One-way Analysis for Rio Grande Valley Strategy. es 88 19 Sell (Buy) December Putures Contract at First of Year and Hold Until Contract Natures. 90 20 Rating of Speculative Strategies by Returns Per Contract. 91 21 One-way Analysis... Valley grows cotton of a staple length and quality more suited to futures contract specifications (1 1/16 inch). The High Plains' shorter staple cotton may cause dif- ficulties in hedging because the price of short staple cotton may not always move jn...

  13. HVDC-AC system interaction from AC harmonics. Volume 1. Harmonic impedance calculations. Final report

    SciTech Connect (OSTI)

    Breuer, G D; Chow, J H; Lindh, C B; Miller, N W; Numrich, F H; Price, W W; Turner, A E; Whitney, R R

    1982-09-01T23:59:59.000Z

    Improved methods are needed to characterize ac system harmonic behavior for ac filter design for HVDC systems. The purpose of this General Electric Company RP1138 research is to evaluate the present filter design practice and to investigate methods for calculating system harmonic impedances. An overview of ac filter design for HVDC systems and a survey of literature related to filter design have been performed. Two methods for calculating system harmonic impedances have been investigated. In the measurement method, an instrumentation system for measuring system voltage and current has been assembled. Different schemes of using the measurements to calculate system harmonic impedances have been studied. In the analytical method, a procedure to include various operating conditions has been proposed. Computer programs for both methods have been prepared, and the results of the measurement and analytical methods analyzed. A conclusion of the project is that the measurement and analytical methods both provided reasonable results. There are correlations between the measured and analytical results for most harmonics, although there are discrepancies between the assumptions used in the two methods. A sensitivity approach has been proposed to further correlate the results. From the results of the analysis, it is recommended that both methods should be tested further. For the measurement method, more testing should be done to cover different system operating conditions. In the analytical method, more detailed models for representing system components should be studied. In addition, alternative statistical and sensitivity approaches should be attempted.

  14. Oldham County, Kentucky: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOffice of StateOklahomaField,Olde West Chester,

  15. Oldham County, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOffice of StateOklahomaField,Olde West Chester,Texas:

  16. An empirical simulation analysis on cotton marketing strategies in west Texas

    E-Print Network [OSTI]

    Elrod, Christopher Patrick

    2009-05-15T23:59:59.000Z

    The three marketing strategies, buying a put option, cash sale at harvest, and cash sale in June after December harvest, are simulated for six representative irrigated and dryland cotton farms in West Texas. Each marketing strategy is ranked using...

  17. COMPARISON OF PICKER AND STRIPPER HARVESTERS ON IRRIGATED COTTON ON THE HIGH PLAINS OF TEXAS

    E-Print Network [OSTI]

    Faulkner, William B.

    2010-01-16T23:59:59.000Z

    Plains is of more storm-proof varieties that have traditionally been harvested using stripper harvesters. However, improvements in irrigation technology and shifting markets for US cotton have increased interest in picker harvesters in the region. A...

  18. Root water extraction zones of irrigated cotton (Gossypium Hirsutum L.) in the Brazos Valley, Texas

    E-Print Network [OSTI]

    Chemelil, Mathew Chirchir

    1986-01-01T23:59:59.000Z

    'ith dry summers. More farmers are therefore increasing their number of hectares under irrigation to benefit from these large increases. Vt'ith increased irrigation of cotton in these counties, the Soil Conservation Service(SCS) embarked on a v...

  19. Agronomic differences in growth and yield between BT and conventional cotton treated with mepiquat chloride

    E-Print Network [OSTI]

    Underbrink, Shelley Marie

    1999-01-01T23:59:59.000Z

    Cotton (Gossypium hirsutum L.), an indeterminacy plant, may exhibit rank vegetative growth under conditions of high fertility and high moisture. Traditionally, mepiquat chloride (l,l-dimethylpiperidinium chloride) has been ...

  20. Growth and yield comparisons of Pix Plus and additional Bacillus cereus treated cotton

    E-Print Network [OSTI]

    Nuti, Russell Carlo

    2001-01-01T23:59:59.000Z

    Pix Plus, a plant growth regulator (PGR) applied to cotton (Gossypium hirsutum L.), is a combination of mepiquat chloride (MC) and Bacillus cereus (BC). Mepiquat chloride is a gibberellic acid (GA) synthesis inhibitor, ...

  1. Extending the utility of machine based height sensors to spatially monitor cotton growth

    E-Print Network [OSTI]

    Geiger, David William

    2004-09-30T23:59:59.000Z

    The recommended procedures for implementing COTMAN; a cotton management expert system; suggest frequent crop scouting at numerous locations for each field. Machine based height sensors coupled with the ability to spatially ...

  2. Cotton Fertilizer Tests in the El Paso Area, 1943-51.

    E-Print Network [OSTI]

    Lyerly, Paul J.; Christensen, Paul D.

    1953-01-01T23:59:59.000Z

    Cotton Fertilizer Tests in the El Paso Area, 1943-51 CONTENTS Page Introduction ...................................................................................................... 3 Many Treatments on Field Plots Included... ............................................................... 8 ............................................................. Potassium Fertilizer Not Required 9 No Yield Increases from Trace Elements ............................................... ... 9...

  3. Growth and yield comparisons of Pix Plus and additional Bacillus cereus treated cotton

    E-Print Network [OSTI]

    Nuti, Russell Carlo

    2001-01-01T23:59:59.000Z

    . Foliar BC rates, application timing, and the most effective MC to BC combinations for use in cotton have not been fully explored. Field experiments were conducted in 1999 and 2000 at the Texas Agricultural Experiment Station in Burleson County, Texas...

  4. The effects of mepiquat chloride on the water relations of cotton

    E-Print Network [OSTI]

    Stuart, Bryan Lee

    1983-01-01T23:59:59.000Z

    by the BASF Corporation and sold under the trade name FIX. The purpose of the investigations described here was to deter- mine the effects of mepiquat chloride treatment on cotton productiv- ity under different soil moisture regimes and to describe...

  5. Localization and identification of anonymous RFLP linkage using segmental aneuploid stocks of cotton

    E-Print Network [OSTI]

    Dubey, Rakesh

    1998-01-01T23:59:59.000Z

    The development of epigenetic tools and techniques raphics. forms an integral part of the cotton genome mapping efforts. The published RFLP linkage map comprises 41 linkage groups of which 14 of the 26 chromosomes are at least partially identified...

  6. Nutrient Management for Texas High Plains Cotton Soil Sampling and Testing

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Nutrient Management for Texas High Plains Cotton Production Soil Sampling and Testing Soil testing. Phosphorus Phosphorus (P) is important in promoting early rooting. It is involved in plant energy storage

  7. Application of Ligninolytic Enzymes in the Production of Biofuels from Cotton Wastes

    E-Print Network [OSTI]

    Placido Escobar, Jersson Emir

    2014-12-02T23:59:59.000Z

    The application of ligninolytic fungi and enzymes is an option to overcome the issues related with the production of biofuels using cotton wastes. In this dissertation, the ligninolytic fungus and enzymes were evaluated as pretreatment...

  8. Development of a screening method for drought tolerance in cotton seedlings

    E-Print Network [OSTI]

    Longenberger, Polly Suzanne

    2007-04-25T23:59:59.000Z

    to be established. The research reported herein was designed to evaluate a screening method for drought tolerance in cotton (Gossypium hirsutum L.) seedlings. Twenty-one converted race stocks (CRS) and two cultivars were evaluated for seedling drought tolerance...

  9. Development of Decision Support Software to Estimate the Cost of Transporting and Ginning of Seed Cotton

    E-Print Network [OSTI]

    Grier, Jordan Lee

    2014-08-13T23:59:59.000Z

    transportation model produced in 2009 is being updated to reflect current economic conditions. This paper explains how non-conventional module types were incorporated into the transportation calculator to aid cotton ginners and producers in making sound...

  10. Genetic Analysis, Inheritance and Stability of Mutation-based Herbicide Tolerance in Cotton (Gossypium hirsutum L.)

    E-Print Network [OSTI]

    Cutts, George Sherrod

    2013-11-04T23:59:59.000Z

    The evolution of herbicide-resistant weed species in cotton production has created a need for new herbicide technology tools. Herbicide technologies not classified as genetically modified by recombinant DNA can provide tools with less associated...

  11. Advanced Analysis of the Responses of Cotton Genotypes Growing Under Water Stress

    E-Print Network [OSTI]

    Maeda, Murilo Minekawa 1985-

    2012-11-12T23:59:59.000Z

    The ever-growing world population raises the concern and necessity of rational use and distribution of limited water resources. Water deficit is the single most dominant abiotic factor limiting cotton (Gossypium hirsutum ...

  12. acrylic acid-grafted cotton: Topics by E-print Network

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

    use the formula ((Degrees F Maximum + Degrees F Minimum) ? 2) - 60. Knowing when a cotton crop is near cutout can help producers make effective end...- nology to be highly...

  13. An Agricultural Economic Survey of Rockwall County, Texas : A Typical Blackland Cotton Farming Area.

    E-Print Network [OSTI]

    Gabbard, L. P. (Letcher P.)

    1925-01-01T23:59:59.000Z

    TfXAS AGRICULTURAL fXPfRIMfNT STATION AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS W. B. BIZZELL, President BULLETIN NO. 327 February, 1925 DIVISION OF FARM AND RANCH ECONOMICS AN AGRICULTURAL ECONOMIC SURVEY OF ROCKWALL COUNTY, TEXAS A... Typical Blackland Cotton Farming Area B. YOUNGBLOOD, DIRECTOR COLLEGE STATION, BRAZOS COUNTY, TEXAS STAFF (As of May 1, 1925) ADMINISTRATION G. N. STROMAN, Ph. D., Agronomist, B. YOUNGBLOOD, M. S., Ph. D., DiTector Cotton Breeding A. B. CONNER, M. S...

  14. An economic analysis of export sales and export shipments: the case for cotton

    E-Print Network [OSTI]

    Ayuk, Elias Takor

    1986-01-01T23:59:59.000Z

    AN ECONOMIC ANALTSIS OF EXPORT SALES AND EXPORT SHIPMENTS: THE CASE FOR COTTON A Thesis by ELIAS TAKOR AYUK Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1986 Mayor Subgect: Agricultural Economics AN ECONOMIC ANALYSIS OF EXPORT SALES AND EXPORT SHIPMENTS: THE CASE FOR COTTON A Thesis by ELIAS TAKOR AYUK Approved as to style and content by Thomas L. Sporle er &Chairman of Committee...

  15. An osmolarity and ultrastructure study of cotton embryo tissue and protoplasts

    E-Print Network [OSTI]

    McLendon, Donna Viretha

    1976-01-01T23:59:59.000Z

    - ly post-fixed in 400 mosM solutions. Micrographs indicate extensive membrane and organelle damage. Protoplasts were also enzymatically isolated from live cotton embryo tissue at 800 mosM and fixed in glutaraldehyde in 800 mosM solu- tions.... "Onozuka" cellulase concentration 14 Rate of decrease in viscosity of substrate vs. "Rhozyme" hemicellulase concentration . . . . . . . . . . . . . . . 16 Electron micrograph of cotton embryo tissue fixed in the 200 mosM treatment noting sparse areas...

  16. A quantitative application of the thermoelectric method for measuring water uptake by cotton plants

    E-Print Network [OSTI]

    Naghshineh-Pour, Bahman

    1965-01-01T23:59:59.000Z

    A QUANTITATIVE APPLICATION OF THE THERMOELECTRIC METHOD FOR MEASURING WATER UPTAKE BY COTTON PLANTS A, Thesis by BAHMAN NAGHSHINEH-POUR Submitted to the Graduate College of Texas ARM University in part al fulfillment of the requirements... for thc degree of MASTER OF SCIENCE January 1965 Major-Subject: Soil Physics A QUANTITATIVE APPLICATION 'OF THE THERMOELECTRIC METHOD FOR MEASURING WATER UPTAKE BY COTTON PLANTS A Thesis by BAHMAN NAGHSHINEH:POUR Approved as to style and content...

  17. Factors Affecting the Performance of Mechanical Cotton Harvesters (Stripper Type), Extractors and Cleaners.

    E-Print Network [OSTI]

    Jones, D. L. (Don L.); Killough, D. T. (David Thornton); Smith, H. P. (Harris Pearson)

    1946-01-01T23:59:59.000Z

    TEXAS AGRICULTURAL EXPERIMENT STATION R. D. LEWIS. DIRECTOR College Station, Texas ULLETIN NO. 686 DECEMBER, 1946 FACTORS AFFECTING THE PERFORMANCE OF MECHANICAL COTTON HARVESTERS (STRIPPER TYPE), EXTRACTORS AND CLEANERS H. P. SMITH, D. T... stripping machines during the past five years. Several concerns are now building two-row tractor mounted machines for the commercial trade. The performance of the stripper type cotton harvester is influenced by a number of factors, Tests to determine...

  18. An analysis of the economic importance of cotton to the Central Gulf Coast area of Texas

    E-Print Network [OSTI]

    Prochaska, Fred J

    1966-01-01T23:59:59.000Z

    AN ANALYSIS OF THE ECONOMIC IMPORTANCE OF COTTON TO THE CENTRAL GULF COAST AREA OF TEXAS A Thesis By Frederick James Prochaska Submitted to the Graduate College of the Texas AAM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1966 Major Subject: Agricultural Economics AN ANALYSIS OF THE ECONOMIC IMPORTANCE OF COTTON TO THE CENTRAL GULF COAST AREA OF TEXAS A Thesis By' Frederick James Prochaska Approved as to style snd content by: C...

  19. Cotton Variety Experiments, 1912-1920, Substation No. 7, Spur, Texas.

    E-Print Network [OSTI]

    Freeman, George Fouche; Dickson, R. E

    1922-01-01T23:59:59.000Z

    TEXAS A6RICULTURAL EXPERIMENT STATION AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS W. B. BIZZELL, President BULLETIN NO. 288 FEBRUARY, 1922 DIVISION OF COTTON BREEDING COTTON VARIETY EXPERIMENTS, 1912-1920, SUBSTATION NO. 7, SPUR, TEXAS B..., Sorl Survegor H. V. GEIB, B. S., Soil Surveyor FEED CONTROL SERVICE B YOUNGBLOOD Ph D Director F.' D. FULLER, M. s.; ~xicf Inspecfor S. D. PEARCE, Inspector J. H. ROGERS, Inspecfor W. H. WOOD, Inspector SUBSTATIONS l%. 'l. Beeville Bee County...

  20. Problems in application of the patronage dividend by cooperative cotton gins in Texas

    E-Print Network [OSTI]

    Baggett, Roosevelt T.

    1937-01-01T23:59:59.000Z

    of Seed Cotton Ginned Per Gin Unit Table II. The Number and. Proportion of Cooperative Gin Associations Using the Various Methods of Cal- culating Patronage Dividends, 1933-1934 and 1935-1936 Seasons 28 Table III. Per Bale Weights of Seed Cotton... Ginned, Cottonseed Sold, and Lint Sold by Members of a Typical Associ- ation, Season oi' 1935-1936. . . . . . . . . . . . ~ 32 Table IV. Percentage Variations of Dividends Calculated Under the Various Methods from Dividends Paid. on a Depart- mental...

  1. The effectiveness of dilute and concentrated dust formulations in cotton insect control

    E-Print Network [OSTI]

    Enkerlin-Schallenmueller, Dieter

    1957-01-01T23:59:59.000Z

    THE EFFECTIVENESS OF DILUTE AND CONCENTRATED DUST FORMULATIONS IN COTTON INSECT CONTROL A Dissertation by DIETER ENKERLIN-S CHALLENMUELLER Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial... fulfillment Of the requirements for the degree of DOCTOR OF PHILOSOPHY May 1957 Major Subject: Entomology THE EFFECTIVENESS OF DILUTE AND CONCENTRATED DUST FORMULATIONS IN COTTON INSECT CONTROL A Dissertation by DIETER ENKERLIN-S CHALLENMUELLER...

  2. Growth and fruiting responses of diverse genotypes of American Upland cotton grown in different environments

    E-Print Network [OSTI]

    Gannaway, J. R

    1971-01-01T23:59:59.000Z

    GROWTH AND FRUITING RESPONSES OF DIVERSE GENOTYPES OF AMERICAN UPLAND COTTON GROWN IN DIFFERENT ENVIRONMENTS A Thesis JOHN ROBERT GANNAWAY Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1971 Major Subject: Plant Breeding GROWTH AND FRUITING RESPONSES OF DIVERSE GENOTYPES OF AMERICAN UPLAND COTTON GROWN IN DIFFERENT ENVIRONMENTS A Thesis by JOHN ROBERT GANNAWAY Approved as to style and content by...

  3. Effects of glyphosate over-the-top applications on the reproductive growth of Roundup Ready cotton

    E-Print Network [OSTI]

    Mery Suarez, Ramon Felipe

    2003-01-01T23:59:59.000Z

    EFFECTS OF GLYPHOSATE OVER-THE-TOP APPLICATIONS ON THE REPRODUCTIVE GROWTH OF ROUNDUP READY COTTON A Thesis by RAMON FELIPE MERY SUAREZ 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 May 2003 Major Subject: Molecular and Environmental Plant Sciences EFFECTS OF GLYPHOSATE OVER-THE-TOP APPLICATIONS ON THE REPRODUCTIVE GROWTH OF ROUNDUP READY COTTON A Thesis by RAMON FELIPE MERY SUAREZ...

  4. Genetic Improvement of Upper Half Mean Length and Short Fiber Content in Upland Cotton, Gosspium hirsutum

    E-Print Network [OSTI]

    Beyer, Benjamin

    2012-10-19T23:59:59.000Z

    the cultivar, environmental conditions during the growing season, harvest methods, and ginning methods (Anthony, 1999). While improvements have been made in the way cotton is handled from harvesting to ginning, genetic improvement of fiber quality... development, potential cultivars should be tested for adaptation prior to adoption by producers in order to determine the potential for fiber quality. Fiber Quality Cotton fiber quality is at its peak when the bolls are still on the plant (Anthony, 1994...

  5. A Precision Agriculture Approach to Managing Cotton Fiber Quality as a Function of Variable Soil Properties

    E-Print Network [OSTI]

    Stanislav, Scott

    2011-08-04T23:59:59.000Z

    A PRECISION AGRICULTURE APPROACH TO MANAGING COTTON FIBER QUALITY AS A FUNCTION OF VARIABLE SOIL PROPERTIES A Seniors Scholars Thesis By SCOTT MICHAEL STANISLAV Submitted to the Office of Undergraduate Research Texas A&M University...://www.pdfmachine.com http://www.broadgun.com A PRECISION AGRICULTURE APPROACH TO MANAGING COTTON FIBER QUALITY AS A FUNCTION OF VARIABLE SOIL PROPERTIES A Seniors Scholars Thesis By SCOTT MICHAEL STANISLAV Submitted to the Office of Undergraduate...

  6. The inheritance, linkage, and fiber development of a new mutant allele in cotton, Gossypium hirsutum L.

    E-Print Network [OSTI]

    Narbuth, Edward Vernon

    1989-01-01T23:59:59.000Z

    THE INHERITANCE, LINKAGE, AND FIBER DEVELOPMENT OF A NEW MUTANT ALLELE IN COTTON, GOSSYPIUM HIRSUTUM L. A Thesis by EDWARD VERNON NARBUTH 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 May 1989 Major Subject: Plant Breeding THE INHERITANCE, LINKAGE, AND FIBER DEVELOPMENT OF A NEW MUTANT ALLELE IN COTTON, GOSSYPIUM HIRSUTUM L. A Thesis by EDWARD VERNON NARBUTH Ap d as to st...

  7. A comparison of bollworm feeding damage on three genotypes of cotton

    E-Print Network [OSTI]

    Baldwin, Jack Lyell

    1972-01-01T23:59:59.000Z

    A COMPARISON OF BOLLWORM FEEDING DAMAGE ON THREE GENOTYPES OF COTTON A Thesis by JACK LYELL BALDWIN Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... December 1972 Major Subject: Entomology A COMPARISON OF BOLLWORM FEEDING DAMAGE ON THREE GENOTYPES OF COTTON A Thesis by JACK LYELL BALDWIN Approved as to style and content by: ~?4% Chairman of Committee) ( ad of Department) (Member) (Member...

  8. The tolerance of two varieties of cotton to relatively high levels of sodium and magnesium

    E-Print Network [OSTI]

    Parekh, Manhar C

    1969-01-01T23:59:59.000Z

    THE TO'ERANCE OF TNO VARIETIES OF COTTON TO RELATIVELY HIGH LEVELS OF SODIUM AND MAGNESIUM A Tnesis by Msnhar C. Parekh Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree...) (Nember) (Nemb ) August 1969 ABSTRACT The Tolerance of Two Varieties of Cotton to Relatively High Levels of Sodium and Magnesium. (August 1969) Masher C. Parekh, B. S. , Gujarat University, Directed by: Dr. H. E. Joham An experiment was conducted...

  9. Growth and fruiting responses of diverse genotypes of American Upland cotton grown in different environments

    E-Print Network [OSTI]

    Gannaway, J. R

    1971-01-01T23:59:59.000Z

    GROWTH AND FRUITING RESPONSES OF DIVERSE GENOTYPES OF AMERICAN UPLAND COTTON GROWN IN DIFFERENT ENVIRONMENTS A Thesis JOHN ROBERT GANNAWAY Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1971 Major Subject: Plant Breeding GROWTH AND FRUITING RESPONSES OF DIVERSE GENOTYPES OF AMERICAN UPLAND COTTON GROWN IN DIFFERENT ENVIRONMENTS A Thesis by JOHN ROBERT GANNAWAY Approved as to style and content by...

  10. Transition to the Relativistic Regime in High Order Harmonic Generation

    SciTech Connect (OSTI)

    Tarasevitch, Alexander; Lobov, Konstantin; Wuensche, Clemens; Linde, Dietrich von der [Institut fuer Experimentelle Physik, Universitaet Duisburg-Essen, D-47048 Duisburg (Germany)

    2007-03-09T23:59:59.000Z

    Experiments and computer simulations on the generation of high order harmonics from steep plasma gradients using intense femtosecond laser pulses are presented. Qualitative changes in the harmonic emission take place when the intensities are increased above 10{sup 19} W/cm{sup 2} and/or the plasma scale length is varied. Good agreement between experimental and calculated spectra makes it possible to clearly distinguish between nonrelativistic and relativistic mechanisms of harmonic generation.

  11. The Effect of Time and Rate of Application of Nitrate of Soda on the Yield of Cotton.

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner); Langley, B. C. (Bryon Caldwell); Johnson, P. R. (Paul Rufus)

    1934-01-01T23:59:59.000Z

    TEXAS AGRICULTURAL EXPERIHENT STATIDJ A. R. CONNER, DIRECTOR COLLEGE STATION, BRAZOS COUNTY. TEXAS BULLETIN NO. 490 MARCH, 1934 .--' --7 , The Effect of Time and Rate of Application of Nitrate of Soda on the Yield of Cotton - AGRICULTURAL... of nitrate of soda on yield, length and percentage of lint, size of boll, shedding, and other characters of the cotton plant on the sandy soils of eastern Texas, as a basis for developing a more intelligent and profitable fertilizer practice for cotton...

  12. A Field-Scale Assessment of Soil-Specific Seeding Rates to Optimize Yield Factors and Water Use in Cotton

    E-Print Network [OSTI]

    Stanislav, Scott Michael

    2011-10-21T23:59:59.000Z

    al., 2006; Ge et al., 2008). Other precision agriculture technologies in cotton, such as variable rate seeding, fertilizer, pest management, and irrigation may have a positive impact on cotton production under a site-specific management plan... the potential to reduce inputs, but equipment costs make these technologies undesirable to producers that have working systems in place (Bronson et al., 2006; Seo et al., 2008). Implementation of these precision agriculture technologies in cotton, especially...

  13. An Economic Analysis of Cotton Gin Plants -- High Plains, Rolling Plains and Lower Rio Grande Valley of Texas.

    E-Print Network [OSTI]

    Thompson, Russell G.; Ward, J. M.

    1964-01-01T23:59:59.000Z

    ----------------------------------------ll Revenues Per Bale 12 Costs Per Bale ............................................. 12 An Economic Analysis Of Cotton Gin Plants- High Plains, Rolling Plains and Lower Rio Grande Valley of Texas u NITED STATES COTTON PRODUCTION has migrated west...Cotton An Economic Analysis t.-7 1 JULY 1964 Gin Plants- Rolling Plains and Lower Rio Grande Valley of Texas TEXAS A&M UNIVERSITY TEXAS AGRICULTURAL EXPERIMENT STATION High Plains, SUMMARY GINNING REVENUES and costs per bale were...

  14. Diagenetic history and the evolution of porosity in the Cotton Valley Limestone, Teague Townsite Field, Freestone County, Texas

    E-Print Network [OSTI]

    Steffensen, Carl Kristian

    1982-01-01T23:59:59.000Z

    of Porosity in the Cotton Valley Limestone, Teague Townsite Field, Freestone County, Texas (December, 1982) Carl Kristian Steffensen, B. S. , University of Illinois Chairman of Advisory Committee: Dr. Wayne M. Ahr The Cotton Valey Lime was deposited... during a regressive phase of the Late Jurassic, in a shallow sea with an exten- sive platform. Mild salt tectonism has modified depositional and diagenetic environments through time. The Cotton Valley Lime is composed of thick, massive, oolitic...

  15. alternating phase harmonic: Topics by E-print Network

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

    the effects of harmonics on their systems: telephone noise, excessive heating of transformers and other equipment, capacitor damage, and others, and would like to limit the...

  16. Simple connection between Faddeev's and the K-harmonic approaches

    SciTech Connect (OSTI)

    Coelho, H.T.; Gloeckle, W.; Delfino, A.

    1980-10-01T23:59:59.000Z

    By employing a system for three bound identical bosons, a simple connection is made between Faddeev's and the K-harmonic approaches.

  17. Analysis and Design of New Harmonic Mitigation Approaches

    E-Print Network [OSTI]

    Aeloiza Matus, Eddy 1972-

    2012-11-01T23:59:59.000Z

    -pulse rectifiers are based on the principle of harmonic cancellation through phase shifting and are the preferred solution to eliminate harmonics in high power converters in large motor drives, electro-winning rectifiers and HVDC transmission systems [23...-voltage systems can have up to 2.0% THD where the cause is an HVDC terminal that will attenuate by the time it is tapped for user. Individual Harmonic Order (Odd Harmonics) Isc / IL <11 11 ? h"? 17 17 ? h"? 23 23 ? h"? 35 h"? 35 TDD <20 * 4.0 2...

  18. Algal Supply System Design - Harmonized Version

    SciTech Connect (OSTI)

    Abodeely, Jared; Stevens, Daniel; Ray, Allison; Newby, Deborah; Schaller, Kastli

    2013-03-01T23:59:59.000Z

    The objective of this design report is to provide an assessment of current technologies used for production, dewatering, and converting microalgae cultivated in open-pond systems to biofuel. The original draft design was created in 2011 and has subsequently been brought into agreement with the DOE harmonized model. The design report extends beyond this harmonized model to discuss some of the challenges with assessing algal production systems, including the ability to (1) quickly assess alternative algal production system designs, (2) assess spatial and temporal variability, and (3) perform large-scale assessments considering multiple scenarios for thousands of potential sites. The Algae Logistics Model (ALM) was developed to address each of these limitations of current modeling efforts to enable assessment of the economic feasibility of algal production systems across the United States. The (ALM) enables (1) dynamic assessments using spatiotemporal conditions, (2) exploration of algal production system design configurations, (3) investigation of algal production system operating assumptions, and (4) trade-off assessments with technology decisions and operating assumptions. The report discusses results from the ALM, which is used to assess the baseline design determined by harmonization efforts between U.S. DOE national laboratories. Productivity and resource assessment data is provided by coupling the ALM with the Biomass Assessment Tool developed at PNNL. This high-fidelity data is dynamically passed to the ALM and used to help better understand the impacts of spatial and temporal constraints on algal production systems by providing a cost for producing extracted algal lipids annually for each potential site.

  19. Harmonic pinnacles in the Discrete Gaussian model

    E-Print Network [OSTI]

    Eyal Lubetzky; Fabio Martinelli; Allan Sly

    2014-05-20T23:59:59.000Z

    The 2D Discrete Gaussian model gives each height function $\\eta : \\mathbb{Z}^2\\to\\mathbb{Z}$ a probability proportional to $\\exp(-\\beta \\mathcal{H}(\\eta))$, where $\\beta$ is the inverse-temperature and $\\mathcal{H}(\\eta) = \\sum_{x\\sim y}(\\eta_x-\\eta_y)^2$ sums over nearest-neighbor bonds. We consider the model at large fixed $\\beta$, where it is flat unlike its continuous analog (the Gaussian Free Field). We first establish that the maximum height in an $L\\times L$ box with 0 boundary conditions concentrates on two integers $M,M+1$ with $M\\sim \\sqrt{(1/2\\pi\\beta)\\log L\\log\\log L}$. The key is a large deviation estimate for the height at the origin in $\\mathbb{Z}^2$, dominated by "harmonic pinnacles", integer approximations of a harmonic variational problem. Second, in this model conditioned on $\\eta\\geq 0$ (a floor), the average height rises, and in fact the height of almost all sites concentrates on levels $H,H+1$ where $H\\sim M/\\sqrt{2}$. This in particular pins down the asymptotics, and corrects the order, in results of Bricmont, El-Mellouki and Fr\\"ohlich (1986), where it was argued that the maximum and the height of the surface above a floor are both of order $\\sqrt{\\log L}$. Finally, our methods extend to other classical surface models (e.g., restricted SOS), featuring connections to $p$-harmonic analysis and alternating sign matrices.

  20. Harmonic-Oscillator-Based Effective Theory

    E-Print Network [OSTI]

    W. C. Haxton

    2006-08-06T23:59:59.000Z

    I describe harmonic-oscillator-based effective theory (HOBET) and explore the extent to which the effects of excluded higher-energy oscillator shells can be represented by a contact-gradient expansion in next-to-next-to-leading order (NNLO). I find the expansion can be very successful provided the energy dependence of the effective interaction, connected with missing long-wavelength physics associated with low-energy breakup channels, is taken into account. I discuss a modification that removes operator mixing from HOBET, simplifying the task of determining the parameters of an NNLO interaction.

  1. Harmon, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG| OpenInformation Handbook forHansung ANewHardyCounty,Harmon,

  2. GyroSolé’ Harmonic Engine

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) Harmonic Engine GyroSolé(tm) engine * Simple * Efficient

  3. The influence of a surfactant upon the foliar penetration of DEF (S, S, S-tributylphosphorotrithioate) in cotton

    E-Print Network [OSTI]

    Baker, Richard Darrell

    1967-01-01T23:59:59.000Z

    gradient, and leaf abscission in cotton, Proc. 9th Ann. Cotton Defol. snd Physiol, . Conf, ? p. 41-45. 2. Agriculture Research Service, June, 1960. Harvest-aid Chemicals for Cotton. ARS 22-58, USDA. 3. Bayer, D. E. and Drever, H. R. 1965. The effects...-called "abscission layer. " Amer. Journ. Bot. 37: 172-180. 'l0. Goyette, L. E. 1956. Abscission inducing activity of a series of trialkyl phosphorotrithioites. Proc. 11th Ann. Cotton Defol. and Physiol. Conf. , p. 9. Hall, W, C. 1958. Physiology and biochemistry...

  4. The influence of a surfactant upon the foliar penetration of DEF (S, S, S-tributylphosphorotrithioate) in cotton

    E-Print Network [OSTI]

    Baker, Richard Darrell

    1967-01-01T23:59:59.000Z

    gradient, and leaf abscission in cotton, Proc. 9th Ann. Cotton Defol. snd Physiol, . Conf, ? p. 41-45. 2. Agriculture Research Service, June, 1960. Harvest-aid Chemicals for Cotton. ARS 22-58, USDA. 3. Bayer, D. E. and Drever, H. R. 1965. The effects...-called "abscission layer. " Amer. Journ. Bot. 37: 172-180. 'l0. Goyette, L. E. 1956. Abscission inducing activity of a series of trialkyl phosphorotrithioites. Proc. 11th Ann. Cotton Defol. and Physiol. Conf. , p. 9. Hall, W, C. 1958. Physiology and biochemistry...

  5. Limitations and improvements for harmonic generation measurements

    SciTech Connect (OSTI)

    Best, Steven; Croxford, Anthony; Neild, Simon [Department of Mechanical Engineering, Queens Building, University Walk, Bristol BS8 1TR (United Kingdom)

    2014-02-18T23:59:59.000Z

    A typical acoustic harmonic generation measurement comes with certain limitations. Firstly, the use of the plane wave-based analysis used to extract the nonlinear parameter, ?, ignores the effects of diffraction, attenuation and receiver averaging which are common to most experiments, and may therefore limit the accuracy of a measurement. Secondly, the method usually requires data obtained from a through-transmission type setup, which may not be practical in a field measurement scenario where access to the component is limited. Thirdly, the technique lacks a means of pinpointing areas of damage in a component, as the measured nonlinearity represents an average over the length of signal propagation. Here we describe a three-dimensional model of harmonic generation in a sound beam, which is intended to provide a more realistic representation of a typical experiment. The presence of a reflecting boundary is then incorporated into the model to assess the feasibility of performing single-sided measurements. Experimental validation is provided where possible. Finally, a focusing acoustic source is modelled to provide a theoretical indication of the afforded advantages when the nonlinearity is localized.

  6. Design study of the bending sections between harmonic cascade FEL stages

    E-Print Network [OSTI]

    Wan, Weishi; Corlett, John; Fawley, William; Zholents, A.

    2004-01-01T23:59:59.000Z

    A XUV/Soft X-Ray Harmonic- Cascade FEL for the Proposed LBNLin a Cascaded Harmonic FEL CBP Tech Note-281, Februarybetween Harmonic Cascade FEL Stages W. Wan, J. Corlett, W.

  7. Complex harmonic wave scattering asthe framework for investigation of bounded beam reflection and transmission

    E-Print Network [OSTI]

    Complex harmonic wave scattering asthe framework for investigation of bounded beam reflection their pro- files.We will verifythesestatementswith a largenumberof illustrations. I. COMPLEX HARMONIC WAVE REFLECTION AND TRANSMISSION A. Representation of a complex harmonic wave in a viscoelastic medium

  8. Gain-assisted harmonic generation in near-zero permittivity metamaterials made of plasmonic nanoshells

    E-Print Network [OSTI]

    Antonietta Vincenti, Maria; Campione, Salvatore; de Ceglia, Domenico; Capolino, Filippo; Scalora, Michael

    2012-01-01T23:59:59.000Z

    from metal shells 3.1. Second-harmonic generation from gold3.2. Third-harmonic generation from golddriven second- and third-harmonic generation at ?-near-zero

  9. Non-commutative harmonic and subharmonic polynomials and other non-commutative partial differential equations

    E-Print Network [OSTI]

    Nelson, Christopher Scott; Nelson, Christopher Scott

    2012-01-01T23:59:59.000Z

    3.2 Simple Cases of Non-Commutative -Harmonic Polyno-3.2.2 1-Harmonic Polynomials . . . . . . . . . . .1.2.1 Non-Commutative Harmonic and Subharmonic Poly-

  10. North-South Standards Harmonization and International Trade

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    North-South Standards Harmonization and International Trade Olivier CADOT Lausanne University Anne,version1-20Mar2014 #12;1 North-South Standards Harmonization and International Trade Anne-Clia Disdier investigate whether the technical requirements contained in North-South Agreements affect international trade

  11. Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft F. Nemec,1,2 O. Santoli´k,3 January 2006; published 22 April 2006. [1] Results of a systematic survey of Power Line Harmonic Radiation from the electric power systems which are magnetically conjugated with the place of observation

  12. Power line harmonic radiation: A systematic study using DEMETER spacecraft

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation: A systematic study using DEMETER spacecraft F. Nemec a,b,*, O of a systematic survey of Power line harmonic radiation (PLHR) observed by the DEMETER spacecraft. DEME- TER frequency spacing corresponds well to the power system frequency at anticipated source locations. Moreover

  13. Propagation of nonlinearly generated harmonic spin waves in microscopic stripes

    E-Print Network [OSTI]

    Otani, Yoshichika

    Propagation of nonlinearly generated harmonic spin waves in microscopic stripes O. Rousseau,1 M on the experimental study of the propagation of nonlinearly generated harmonic spin waves in microscopic CoFeB stripes wave propagation. VC 2014 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4864480] In recent years

  14. Harmonic minimization waveforms for modulated heating experiments at HAARP

    E-Print Network [OSTI]

    Harmonic minimization waveforms for modulated heating experiments at HAARP G. Jin,1 M. Spasojevic,1), Harmonic minimization waveforms for modulated heating experiments at HAARP, J. Geophys. Res., 117, A11315 and Stubbe [1984], and Milikh et al. [1999]. The High Fre- quency Active Auroral Research Program (HAARP

  15. Higher order harmonic detection for exploring nonlinear interactions

    SciTech Connect (OSTI)

    Vasudevan, Rama K [ORNL; Okatan, M. B. [University of New South Wales; Rajapaksa, Indrajit [Oak Ridge National Laboratory (ORNL); Kim, Yunseok [ORNL; Marincel, Dan [Materials Science and Engineering, Pennsylvania State University; Trolier-McKinstry, Susan [Pennsylvania State University; Jesse, Stephen [ORNL; Nagarajan, Valanoor [University of New South Wales; Kalinin, Sergei V [ORNL

    2013-01-01T23:59:59.000Z

    Nonlinear dynamics underpin a vast array of physical phenomena ranging from interfacial motion to jamming transitions. In many cases, decoupling the contributions of competing or co-existing mechanisms to the system response can be achieved through investigation of higher order harmonics. Here, a method using band excitation scanning probe microscopy to investigate higher order harmonics of the electromechanical response, with nanometer scale spatial resolution is presented. The utility of the technique is demonstrated by probing the first three harmonics of strain for a well-known system, a model Pb(Zr1-xTix)O3 ferroelectric capacitor. It is shown that the second order harmonic response is correlated with the first harmonic response, whereas the third harmonic is not. Additionally, nanoscale measurements of the second harmonic response with field reveal significant deviations from Rayleigh-type models in the form of a much more complicated field dependence than is observed in the spatially averaged data. These results illustrate the versatility of combining proximal probe techniques with nth harmonic detection methods in exploring and decoupling nonlinear dynamics in a wide variety of nanoscale materials.

  16. Spectrum of second-harmonic radiation generated from incoherent light

    SciTech Connect (OSTI)

    Stabinis, A.; Pyragaite, V.; Tamosauskas, G.; Piskarskas, A. [Department of Quantum Electronics, Vilnius University, Sauletekio Avenue 9, Building 3, LT-10222 Vilnius (Lithuania)

    2011-10-15T23:59:59.000Z

    We report on the development of the theory of second-harmonic generation by an incoherent pump with broad angular and frequency spectra. We show that spatial as well as temporal walk-off effects in a nonlinear crystal result in angular dispersion of the second-harmonic radiation. We demonstrate that the acceptance angle in second-harmonic generation by incoherent light is caused by the width of the pump angular spectrum and the resulting angular dispersion of second-harmonic radiation but does not depend on crystal length. In this case the frequency spectrum of second-harmonic radiation is determined by its angular dispersion and the pump angular spectrum. The theory is supported by an experiment in which a LiIO{sub 3} crystal was pumped by a tungsten halogen lamp.

  17. Commissioning of a higher harmonic RF system for the Advanced Light Source

    E-Print Network [OSTI]

    Byrd, John M.; De Santis, Stefano; Georgsson, Mattias; Stover, G.; Fox, John D.; Teytelman, Dmitry

    2000-01-01T23:59:59.000Z

    Commissioning of a higher harmonic RF system for theAbstract We report on the commissioning of a higher harmonicpresents the results of commissioning of the ALS harmonic

  18. Hierarchical Control Scheme for Voltage Harmonics Compensation in an Islanded Droop-

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Hierarchical Control Scheme for Voltage Harmonics Compensation in an Islanded Droop- Controlled on the resistance emulation. Furthermore, a droop characteristic based on DG harmonic reactive power has been

  19. Relativistic harmonic oscillator model for quark stars

    E-Print Network [OSTI]

    Vishnu M. Bannur

    2008-10-06T23:59:59.000Z

    The relativistic harmonic oscillator (RHO) model of hadrons is used to study quark stars. The mass-radius relationship is obtained and compared with bag model of quark star, using Tolman-Oppenheimer-Volkoff equation. In this model, the outward degenerate pressure due to discrete Landau levels and Landau degeneracy balances the inward gravitational pressure. Where as in bag model the degenerate pressure is due to the standard continuum levels which balances the combined inward pressure due to gravitation and bag pressure. So in RHO model, the confinement effect is included in the degenerate pressure. We found a qualitative similarity, but quantitative differences in mass-radius relationship of quark stars in these two models. Masses and radii are relatively larger and the central energy densities, required for stable quark stars, are lower in RHO model than that of bag model.

  20. Evidence of High Harmonics from Echo-Enabled Harmonic Generation for Seeding X-ray Free Electron Lasers

    SciTech Connect (OSTI)

    Xiang, D.; Colby, E.; Dunning, M.; Gilevich, S.; Hast, C.; Jobe, K.; McCormick, D.; Nelson, J.; Raubenheimer, T.O.; Soong, K.; Stupakov, G.; Szalata, Z.; Walz, D.; Weathersby, S.; Woodle, M.; /SLAC; ,

    2012-02-15T23:59:59.000Z

    Echo-enabled harmonic generation free electron lasers hold great promise for the generation of fully coherent radiation in x-ray wavelengths. Here we report the first evidence of high harmonics from the echo-enabled harmonic generation technique in the realistic scenario where the laser energy modulation is comparable to the beam slice energy spread. In this experiment, coherent radiation at the seventh harmonic of the second seed laser is generated when the energy modulation amplitude is about 2-3 times the slice energy spread. The experiment confirms the underlying physics of echo-enabled harmonic generation and may have a strong impact on emerging seeded x-ray free electron lasers that are capable of generating laserlike x rays which will advance many areas of science.

  1. ABSTRACT: The effect of the cotton storage trisaccharide raf-finose and cottonseed storage protein (CSP) in combination on

    E-Print Network [OSTI]

    Cotty, Peter J.

    ABSTRACT: The effect of the cotton storage trisaccharide raf- finose and cottonseed storage protein of ground whole cottonseed and water-extracted cotton- seed meal to support fungal biosynthesis of aflatoxin in raffinose refer- ence media. Results with ground whole cottonseed as a sole carbon/nitrogen source

  2. Characterization of ethylene biosynthesis in cotton (Gossypium hirsutum L.) fruiting form as a means to improve early season fruit set

    E-Print Network [OSTI]

    Campbell, Terry Ray

    1994-01-01T23:59:59.000Z

    's preliminary studies found much more of an effect of a BASF inhibitor of ethylene production on cotton flowers than on the vegetative tissue, a unique ACC synthase, N-malonyl ACC transferase or ACC oxidase may exist in cotton flowers. This may offer...

  3. SU(4) harmonic superspace and supersymmetric gauge theory

    E-Print Network [OSTI]

    B. M. Zupnik

    2014-10-10T23:59:59.000Z

    We consider the harmonic-superspace formalism in the $N=4$ supersymmetry using the $SU(4)/SU(2)\\times SU(2)\\times U(1)$ harmonics which was earlier applied to the abelian gauge theory. The N=4 non-abelian constraints in a standard superspace are reformulated as the harmonic-superspace equations for two basic analytic superfields: the independent superfield strength W of a dimension 1 and the dimensionless harmonic gauge 4-prepotential V having the $U(1)$ charge 2. These constraint equations I manifestly depend on the Grassmann coordinates $\\theta$, although they are covariant under the unusual N=4 supersymmetry transformations. We analyze an alternative harmonic formalism of the supergauge theory for two unconstrained nonabelian analytic superfields W and V. The gauge-invariant action A(W,V) in this formalism contains $\\theta$ factors in each term, it is invariant under the $SU(4)$ automorphism group. In this model, the interaction of two infinite-dimensional N=4 supermultiplets with the physical and auxiliary fields arises at the level of component fields. The action A(W,V) generate analytic equations of motion II alternative to the harmonic-superspace superfield constraints I. Both sets of equations give us the equivalent equations for the physical component fields of the $N=4$ gauge supermultiplet, they connect auxiliary and physical fields of two superfields. The nonlinear effective interaction of the abelian harmonic superfield W is constructed.

  4. Relativistic high harmonic generation in gas jet targets

    SciTech Connect (OSTI)

    Pirozhkov, A.S.; Kando, M.; Esirkepov, T.Zh.; and others

    2012-07-11T23:59:59.000Z

    We experimentally demonstrate a new regime of high-order harmonic generation by relativistic-irradiance lasers in gas jet targets. Bright harmonics with both odd and even orders, generated by linearly as well as circularly polarized pulses, are emitted in the forward direction, while the base harmonic frequency is downshifted. A 9 TW laser generates harmonics up to 360 eV, within the 'water window' spectral region. With a 120 TW laser producing 40 uJ/sr per harmonic at 120 eV, we demonstrate the photon number scalability. The observed harmonics cannot be explained by previously suggested scenarios. A novel high-order harmonics generation mechanism [T. Zh. Esirkepov et al., AIP Proceedings, this volume], which explains our experimental findings, is based on the phenomena inherent in the relativistic laser - underdense plasma interactions (self-focusing, cavity evacuation, and bow wave generation), mathematical catastrophe theory which explains formation of electron density singularities (cusps), and collective radiation due to nonlinear oscillations of a compact charge.

  5. Second harmonic effect on geodesic modes in tokamak plasmas

    SciTech Connect (OSTI)

    Elfimov, A. G.; Galvo, R. M. O. [Institute of Physics, University of So Paulo, So Paulo 05508-090 (Brazil)] [Institute of Physics, University of So Paulo, So Paulo 05508-090 (Brazil); Smolyakov, A. I. [University of Saskatchewan, 116 Science Place, Saskatoon S7N 5E2 (Canada) [University of Saskatchewan, 116 Science Place, Saskatoon S7N 5E2 (Canada); Institute of Tokamak Physics, NRC Kurchatov Institute, 123182 Moscow (Russian Federation); Melnikov, A. V. [Institute of Tokamak Physics, NRC Kurchatov Institute, 123182 Moscow (Russian Federation)] [Institute of Tokamak Physics, NRC Kurchatov Institute, 123182 Moscow (Russian Federation)

    2013-05-15T23:59:59.000Z

    Results of a kinetic treatment of Geodesic Acoustic Modes (GAMs) that fully takes into account ion parallel dynamics, including the magnetic field component, are presented. The finite-orbit-width (FOW) parameter is considered in the calculation of the second harmonic effect on GAMs. For larger values of the FOW parameter, it is shown that dispersive effects related to the m = 2 harmonics is the cause of the mode frequency splitting and the modes appear due to the interaction with the ion sound mode. Furthermore, the modes may have enhanced damping rates due to second harmonic Landau damping.

  6. Harmonic measurements from a group connected generator HVdc converter scheme

    SciTech Connect (OSTI)

    Macdonald, S.J.; Enright, W.; Arrillaga, J. [Univ. of Canterbury, Christchurch (New Zealand)] [Univ. of Canterbury, Christchurch (New Zealand); O`Brien, M.T.

    1995-10-01T23:59:59.000Z

    A recent CIGRE document published in ELECTRA has described the potential benefits of a direct connection of generators to HVdc converters. While many theoretical contributions have been made, no practical test data has become available so far. This paper reports on harmonic tests carried out at the Benmore end of the New Zealand HVdc link operating as a group connected scheme. It was found that the measured harmonic current levels were well below specified generator ratings. Dynamic simulation accurately predicted the harmonic currents whereas the results of a steady state formulation were less reliable.

  7. Generalized Harmonic Equations in 3+1 Form

    E-Print Network [OSTI]

    J. David Brown

    2011-11-29T23:59:59.000Z

    The generalized harmonic equations of general relativity are written in 3+1 form. The result is a system of partial differential equations with first order time and second order space derivatives for the spatial metric, extrinsic curvature, lapse function and shift vector, plus fields that represent the time derivatives of the lapse and shift. This allows for a direct comparison between the generalized harmonic and the Arnowitt-Deser-Misner formulations. The 3+1 generalized harmonic equations are also written in terms of conformal variables and compared to the Baumgarte-Shapiro-Shibata-Nakamura equations with moving puncture gauge conditions.

  8. High order harmonic generation in dual gas multi-jets

    SciTech Connect (OSTI)

    Tosa, Valer, E-mail: valer.tosa@itim-cj.ro, E-mail: calin.hojbota@itim-cj.ro; Hojbota, Calin, E-mail: valer.tosa@itim-cj.ro, E-mail: calin.hojbota@itim-cj.ro [National Institute for Research and Development of Isotopic and Molecular Technologies, Donath 65-103, 400293 Cluj-Napoca (Romania)] [National Institute for Research and Development of Isotopic and Molecular Technologies, Donath 65-103, 400293 Cluj-Napoca (Romania)

    2013-11-13T23:59:59.000Z

    High order harmonic generation (HHG) in gas media suffers from a low conversion efficiency that has its origins in the interaction of the atom/molecule with the laser field. Phase matching is the main way to enhance the harmonic flux and several solutions have been designed to achieve it. Here we present numerical results modeling HHG in a system of multi-jets in which two gases alternate: the first gas jet (for example Ne) generates harmonics and the second one which ionizes easier, recover the phase matching condition. We obtain configurations which are experimentally feasible with respect to pressures and dimensions of the jets.

  9. Harmonic Superspace Gaugeon Formalism for the ABJM Theory

    E-Print Network [OSTI]

    Mir Faizal

    2012-07-12T23:59:59.000Z

    In this paper we will analyse the ABJM theory in harmonic superspace. The harmonic superspace variables will be parameterized by the coset $SU(2)/U(1)$ and thus will have manifest $\\mathcal{N} =3$ supersymmetry. We will study the quantum gauge transformations and the BRST transformations of this theory in gaugeon formalism. We will use this BRST symmetry to project out the physical sub-space from the total Hilbert space. We will also show that the evolution of the $\\mathcal{S}$-matrix is unitary for this ABJM theory in harmonic superspace.

  10. Resistant characteristics of cotton to sweet potato whitefly (Bemisia tabaci Gennadius)

    E-Print Network [OSTI]

    Smith, Wendy Justine

    1993-01-01T23:59:59.000Z

    in increments of 0. 25, with a preference for media in the 6. 0 to 7. 25 pH range (Berlinger et al. , 1983). If 12 these results are transferable to phloem sap, then variation among cotton genotypes for the pH of the phloem sap might provide a resistance...) consisting of organdy cloth stretched over wooden frames. Genotypes were grown in 11. 3 L pots in Metro Mix 250 commercial potting media. Plants were watered when necessary, based 15 Table 1. Phenotypic characteristics of cotton genotypes used in studying...

  11. Economies of Size on Irrigated Cotton Farms of the Texas High Plains.

    E-Print Network [OSTI]

    Madden, J. Patrick; Davis, Bob

    1965-01-01T23:59:59.000Z

    1 Economies of Size on Irrigated Cotton Farms of the Texas High Plains TEXAS A&M UNIVERSITY TEXAS AGRICULTURAL EXPERIMENT STATION R. E. Patterson, Director, College Station, Texas In cooperation with the U. S. Department of Agriculture B-1037... June 1965 The study analyzed the economies of size available to irrigated cotton farms in the Texas High Plains. The findings show that the one-man farm with adequate capital can be as efficient as any larger size of farm. In fact, a 440-acre farm...

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

    E-Print Network [OSTI]

    Keese, Carroll Wayne

    1958-01-01T23:59:59.000Z

    of the moisture level imposed, and that water was not used efficiently from the two to five-foot zone. Hamilton and Stanberry (2) investigated the effects of varying rates of nitrogen fertilizer on the need of cotton for irrigation at Yuma, Arizona...LIBRARY II a III COLLEI:. e& 7EXAs STUDY OF THE MOISTURE-FERTILITY REQUIREMENTS OF COTTON IN THE BRAZOS RIVER VALLEY - 1957 A Thesis by CARROLL VIAYNE KEESE Submitted to the Graduate School of the Agricultural and Mechanical College...

  13. Efficacy and mode of action of propiconazol against Phymatotrichum omnivorum on cotton

    E-Print Network [OSTI]

    Mathieson, John Todd

    1983-01-01T23:59:59.000Z

    of cotton root d lych ?P ' . P p' *l ppl' d d seed, furrow, and foliage. Emulsifiable concentrate ('31 g a. i. /1) applied to coctonseed. 0. 0 100, 0 a. i. /kg of seed 10. 0 g a. i. /kg of seed Granular 1. 0 g a. i. /kg of seed formulation (2. 5... of cotton root d lych 'h l . P p' l ppl d h seed, furrow, and foliage. Emulsifiable concencrate (431 g a. i. /1) applied to cocronseed. 0. O 1OO. O 10. O 1. 0 a. i. /kg ot seed a. i. /kg of seed g a. i. /kg of seed B. Granular formulation (2. 52...

  14. The effects of spacing on yield and other agronomic characters in three varieties of upland cotton

    E-Print Network [OSTI]

    Grewal, Guriqbal Singh

    1954-01-01T23:59:59.000Z

    to the availability of sufficient, moisture Luring most of the grow- ing season. A simi1ax' test grown under more stressed conditions might well result iu a higher yield for some wider spscing. In agreement, with Cotton snd ?3rown (6) in Louisiana, Cook (0...LI SCARY A 4 M COLLEGE OF TEXAS TIIE EFFECTS CF SPACING ON ~ AIK OTHER AGRONOKIC CIIABACTFSS lN TENEZ VARTZTI~M OF UPLAND COTTON A Tbes'1s Gnriqbal Sin@5 Gravel Approved as to style anti oontert, by Chairman of Committee He o t e Department...

  15. The effects of topping on yield and other agronomic characters in two varieties of Upland cotton

    E-Print Network [OSTI]

    Bearden, Gary Dee

    1957-01-01T23:59:59.000Z

    LiBRARY A A M COLLESE Of TEXAS THE EFFECTS OF TOPPlNG ON YIELD AND OTHER AGRONOMIC CHARACTERS IN TM) VARIETIES OF UPLAND COTTON Gary Dse Bearden Suhmittsd to ths Graduate School of ths Agricultural and Mechanical Collage of Texas in Partial... fulfillment of the requirements for ths degree of MASTER OF SCIENCE January 1957 Ma/or Subjects Plant Breeding THE EFFECTS OF TOPPING ON YIELD AND OTHER AGRONOMIC CHARACTERS IN TM3 VARIETIES OF UPLAND COTTON Gary Dee Beaten Approve4 as to style...

  16. Comparison of benzene hexachloride formulated from high and low gamma concentrates for cotton aphid control

    E-Print Network [OSTI]

    Raven, Klaus Gustav

    1957-01-01T23:59:59.000Z

    in laboratory toxicity tests conducted during susaer 1955. 26 Median lethal doses snd average fiducial 1inits at the 5 psr cent level, calculated fran dosage- nortality curves, for ten fornulstions of BHC and parathion, twenty-four hours after treatneat... of the cotton aphid obtained during sussaer and tall 19S5 with BHC fornulstions as indicated. 39 9. Analysis of variaace of per cent control of the cotton aphid in toxicity tests conducted during sunner and fall 1955. 40 10. Average per cent control...

  17. The Effect of Cleaning on the Grade, Staple and Price of Cotton.

    E-Print Network [OSTI]

    Grimes, Mary Anna

    1950-01-01T23:59:59.000Z

    available, are those designed for ordinary ginned cotton con- taining a normal amount of foreign matter. No commercial equipment comparable with the laboratory de- vice, the Shirley analyzer, is available, therefore, the cost of cleaning cannot be taken...The Effect of Cleaning on the Grade, Staple and Price of Cotton MARY ANNA GRIMES Department of Rural Home Research LIS??AT?Y A. & M. COLLEGE OF TD(AS [Blank Page in Original Bulletin] Digest The removal of all foreign matter from ginned...

  18. The effects of topping on yield and other agronomic characters in two varieties of Upland cotton

    E-Print Network [OSTI]

    Bearden, Gary Dee

    1957-01-01T23:59:59.000Z

    LiBRARY A A M COLLESE Of TEXAS THE EFFECTS OF TOPPlNG ON YIELD AND OTHER AGRONOMIC CHARACTERS IN TM) VARIETIES OF UPLAND COTTON Gary Dse Bearden Suhmittsd to ths Graduate School of ths Agricultural and Mechanical Collage of Texas in Partial... fulfillment of the requirements for ths degree of MASTER OF SCIENCE January 1957 Ma/or Subjects Plant Breeding THE EFFECTS OF TOPPING ON YIELD AND OTHER AGRONOMIC CHARACTERS IN TM3 VARIETIES OF UPLAND COTTON Gary Dee Beaten Approve4 as to style...

  19. An Economic Study of Farm Organization and Operation in the High Plains Cotton Area of Texas.

    E-Print Network [OSTI]

    Bonnen, C.A.; Thibodeaux, B. H.; Magee, A.C.

    1939-01-01T23:59:59.000Z

    credit and to agricultural adjustments in the area. The number of farms studied each year ranged from 127 to 141, or an average of 137. The average operator's earnings per farm amounted to $223 in 1931, $124 in 1932, $1,808 in 1933, $254 in 1934... of individual farms during 1931 and 1932 showed that six factors accounted for 63 per cent of the varia- tion during those years. These factors listed in order of their importance were (1) yield of cotton per acre; (2) per- centage of farm land in cotton; (3...

  20. ASYMPTOTIC DISTRIBUTION OF ESTIMATES FOR A TIME-VARYING PARAMETER IN A HARMONIC MODEL

    E-Print Network [OSTI]

    Irizarry, Rafael A.

    ASYMPTOTIC DISTRIBUTION OF ESTIMATES FOR A TIME-VARYING PARAMETER IN A HARMONIC MODEL WITH MULTIPLE harmonic regression models are useful for cases where harmonic parameters appear to be time-varying. Least, harmonic regression, signal processing, sound analysis, time-varying parameters, weighted least squares

  1. Harmonic Content of Strain-induced Potential Modulation in Unidirectional Lateral Superlattices

    E-Print Network [OSTI]

    Katsumoto, Shingo

    Harmonic Content of Strain-induced Potential Modulation in Unidirectional Lateral Superlattices from a ¼ 92 to 184 nm. Fourier analysis reveals the second (and the third) harmonics along of corresponding harmonics in the profile of the potential modulation. The harmonics manifest themselves in CO

  2. Inverse medium scattering for three-dimensional time harmonic ...

    E-Print Network [OSTI]

    2004-01-22T23:59:59.000Z

    Jan 22, 2004 ... problem of time harmonic Maxwell equations in R3. ..... For a simple stability analysis, some relative random noise is added to the data, e.g., the.

  3. Interference-Aware Geometric Modeling David Harmon1

    E-Print Network [OSTI]

    Grinspun, Eitan

    Interference-Aware Geometric Modeling David Harmon1 Daniele Panozzo1,2 Olga Sorkine1,3 Denis Zorin1 as glaring artifacts, and eliminate the ability to use the final model further down many software pipelines

  4. Time-optimal controls for frictionless cooling in harmonic traps

    E-Print Network [OSTI]

    Salamon, Peter

    OFFPRINT Time-optimal controls for frictionless cooling in harmonic traps K. H. Hoffmann, P payment Details on preparing, submitting and tracking the progress of your manuscript from submission

  5. Classification of Certain Compact Riemannian Manifolds with Harmonic Curvature a...

    E-Print Network [OSTI]

    Derdzinski, Andrzej

    Classification of Certain Compact Riemannian Manifolds with Harmonic Curvature a... Derdzinski and University Library provides access to digitized documents strictly for noncommercial educational, research) requires prior written permission from the Goettingen State- and University Library. Each copy of any part

  6. Electric shock and elevated EMF levels due to triplen harmonics

    SciTech Connect (OSTI)

    Tran, T.Q.; Conrad, L.E.; Stallman, B.K. [PSI Energy, Inc., Plainfield, IN (United States)] [PSI Energy, Inc., Plainfield, IN (United States)

    1996-04-01T23:59:59.000Z

    The increasing use of single phase rectifiers for electric power conversion in residential applications increases harmonic load on utility systems. Many papers have analyzed the effect of these loads on power quality and equipment loadability. However, there are two more critical concerns for harmonic loads served phase to neutral on multi-grounded wye systems. Triplen harmonics, particularly the third, add in the neutral and have little diversity between loads. The higher neutral currents may cause significant problems. Neutral to earth voltages will increase near the substations which could increase stray voltage complaints. The additional neutral current on three phase lines will elevate EMF levels especially in the fringe areas. This paper provides fundamental understanding of triplen harmonic influence on stray voltage and EMF related to multi-grounded wye electric distribution systems.

  7. Harmonic Image Reconstruction Assisted by a Nonlinear Metmaterial Surface

    E-Print Network [OSTI]

    Wang, Zhiyu

    We experimentally demonstrate a microwave far-field image reconstruction modality with the transverse resolution exceeding the diffraction limit by using a single layer of highly nonlinear metamaterial. The harmonic fields ...

  8. Nonlinear harmonic generation and devices in doubly resonant Kerr cavities

    E-Print Network [OSTI]

    Hashemi, Hila

    We describe a theoretical analysis of the nonlinear dynamics of third-harmonic generation (??3?) via Kerr (?(3)) nonlinearities in a resonant cavity with resonances at both ? and 3?. Such a doubly resonant cavity greatly ...

  9. Investigation of plasma diagnostics using a dual frequency harmonic technique

    SciTech Connect (OSTI)

    Kim, Dong-Hwan [Department of Nanoscale Semiconductor Engineering, Hanyang University, Seoul (Korea, Republic of); Kim, Young-Do; Cho, Sung-Won; Kim, Yu-Sin; Chung, Chin-Wook, E-mail: joykang@hanyang.ac.kr [Department of Electrical Engineering, Hanyang University, Seoul (Korea, Republic of)

    2014-09-07T23:59:59.000Z

    Plasma diagnostic methods using harmonic currents analysis of electrostatic probes were experimentally investigated to understand the differences in their measurement of the plasma parameters. When dual frequency voltage (?{sub 1},?{sub 2}) was applied to a probe, various harmonic currents (?{sub 1},?2?{sub 1},?{sub 2},?2?{sub 2},?{sub 2}?{sub 1},?{sub 2}2?{sub 1}) were generated due to the non-linearity of the probe sheath. The electron temperature can be obtained from the ratio of the two harmonics of the probe currents. According to the combinations of the two harmonics, the sensitivities in the measurement of the electron temperature differed, and this results in a difference of the electron temperature. From experiments and simulation, it is shown that this difference is caused by the systematic and random noise.

  10. Driven harmonic oscillator as a quantum simulator for open systems

    E-Print Network [OSTI]

    Jyrki Piilo; Sabrina Maniscalco

    2006-10-03T23:59:59.000Z

    We show theoretically how a driven harmonic oscillator can be used as a quantum simulator for non-Markovian damped harmonic oscillator. In the general framework, the results demonstrate the possibility to use a closed system as a simulator for open quantum systems. The quantum simulator is based on sets of controlled drives of the closed harmonic oscillator with appropriately tailored electric field pulses. The non-Markovian dynamics of the damped harmonic oscillator is obtained by using the information about the spectral density of the open system when averaging over the drives of the closed oscillator. We consider single trapped ions as a specific physical implementation of the simulator, and we show how the simulator approach reveals new physical insight into the open system dynamics, e.g. the characteristic quantum mechanical non-Markovian oscillatory behavior of the energy of the damped oscillator, usually obtained by the non-Lindblad-type master equation, can have a simple semiclassical interpretation.

  11. Casimir Friction Force for Moving Harmonic Oscillators

    E-Print Network [OSTI]

    Johan S. Hye; Iver Brevik

    2011-11-21T23:59:59.000Z

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

  12. Wind LCA Harmonization (Fact Sheet), NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Not Available

    2013-06-01T23:59:59.000Z

    NREL recently led the Life Cycle Assessment (LCA) Harmonization Project, a study that provides more exact estimates of GHG emissions for renewable and conventional generation, clarifying inconsistent and conflicting estimates in the published literature, and reducing uncertainty. This involved a systematic review and harmonization of life cycle assessment (LCA) literature of utility-scale wind power systems in order to determine the causes of life cycle greenhouse gases (GHG) emissions and, where possible, reduce variability in GHG estimates.

  13. Harmonic entanglement with second-order non-linearity

    E-Print Network [OSTI]

    Nicolai B. Grosse; Warwick P. Bowen; Kirk McKenzie; Ping Koy Lam

    2005-07-08T23:59:59.000Z

    We investigate the second-order non-linear interaction as a means to generate entanglement between fields of differing wavelengths. And show that perfect entanglement can, in principle, be produced between the fundamental and second harmonic fields in these processes. Neither pure second harmonic generation, nor parametric oscillation optimally produce entanglement, such optimal entanglement is rather produced by an intermediate process. An experimental demonstration of these predictions should be imminently feasible.

  14. Calculation of Massless Feynman Integrals using Harmonic Sums

    E-Print Network [OSTI]

    Stefan Bekavac

    2006-07-10T23:59:59.000Z

    A method for the evaluation of the epsilon expansion of multi-loop massless Feynman integrals is introduced. This method is based on the Gegenbauer polynomial technique and the expansion of the Gamma function in terms of harmonic sums. Algorithms for the evaluation of nested and harmonic sums are used to reduce the expressions to get analytical or numerical results for the expansion coefficients. Methods to increase the precision of numerical results are discussed.

  15. Fast optimal frictionless atom cooling in harmonic traps

    E-Print Network [OSTI]

    Xi Chen; A. Ruschhaupt; S. Schmidt; A. del Campo; D. Guery-Odelin; J. G. Muga

    2009-10-05T23:59:59.000Z

    A method is proposed to cool down atoms in a harmonic trap without phase-space compression as in a perfectly slow adiabatic expansion, i.e., keeping the populations of the instantaneous initial and final levels invariant, but in a much shorter time. This may require that the harmonic trap becomes an expulsive parabolic potential in some time interval. The cooling times achieved are also shorter than previous minimal times using optimal-control bang-bang methods and real frequencies.

  16. Harmonic generation of gravitational wave induced Alfven waves

    E-Print Network [OSTI]

    Mats Forsberg; Gert Brodin

    2007-11-26T23:59:59.000Z

    Here we consider the nonlinear evolution of Alfven waves that have been excited by gravitational waves from merging binary pulsars. We derive a wave equation for strongly nonlinear and dispersive Alfven waves. Due to the weak dispersion of the Alfven waves, significant wave steepening can occur, which in turn implies strong harmonic generation. We find that the harmonic generation is saturated due to dispersive effects, and use this to estimate the resulting spectrum. Finally we discuss the possibility of observing the above process.

  17. Current Generated Harmonics and Their Effect Upon Electrical Industrial Systems

    E-Print Network [OSTI]

    Alexander, H. R.; Rogge, D. S.

    of the nonlinear loads with respect to that system. The distortion increases as the percentage of nonlinear loads increases. (2) PROBLEMS ENCOUNTERED WITH HARMONICS High Neutral Conductor Currcnts Perhaps the dominant harmonic problem encountered... in commercial facilities and some industrial plants has been the overheating of neutral conductors of 3-phase, 4-wire branch and feeder distribution systems. In a balanced, 3-phase, 4-wire wye system with phase-to-ncutral linear loads, the neutral current...

  18. The influence of ammonium nitrogen and phosphorus on the soil microflora as related to the seedling disease complex of cotton

    E-Print Network [OSTI]

    Morales-Bermudez, Marciano

    1956-01-01T23:59:59.000Z

    21 on the pH ot Bienville soil 22 5. The influence of ammonium nitrogen and organic matter on the soil microflora in Bienville soil 23 6. The influence of ammonium nitrogen on emergence of cotton seedlings in Miller clay 26 7. 'The influence... of ammonium nitrogen on post-emergence damping-off of cotton seedlings in Miller clay 8. The influence of ammonium nitrogen on final stands of 27 cotton seedlings in Miller clay 28 9. The influence of asssonium nitrogen on the pH of Miller clay 29 10...

  19. Linear harmonic analysis of Stirling engine thermodynamics

    SciTech Connect (OSTI)

    Chen, N.C.J.; Griffin, F.P.; West, C.D.

    1984-08-01T23:59:59.000Z

    The analysis involves linearization of the pressure waveform and represents each term in the conservation equations by a truncated Fourier series, including enthalpy flux discontinuity. Second-Law analysis is presented of four important loss mechanisms that result from adiabatic cylinders, transient heat transfer in semiadiabatic cylinders, pressure drop through the heat exchangers, and gas leakage from the compression space. The four loss mechanisms, all leading to efficiency reduction below the Carnot level, are characterized by irreversible thermodynamic processes that occur when heat is transferred across a finite temperature difference; when gases at two different temperatures are mixed; or when there is a mass flow through a pressure difference. The allocation of each individual loss mechanism is derived precisely in terms of entropy production but evaluated by use of pressure, temperature, and mass oscillations calculated from the linear harmonic approximation. When the theory is applied to an engine of Sunpower's RE-1000 dimensions, it reveals clearly that the adiabatic loss (due to temperature fluctuations in the cylinders) consists of two components: gas mixing and heat transfer across a temperature difference. The theory further shows that the adiabatic effect is more important than the transient heat transfer loss if the gas-to-cylinder heat transfer rate is small (i.e., nearly adiabatic conditions); the reverse is true for intermediate heat transfer rates; and both losses vanish at very high heat transfer rates. In addition, entropy analyses of pressure drop and mass leakage for isothermal cylinders shed some light on coupling between the different individual loss mechanisms.

  20. Numerical Analysis of Fifth-Harmonic Conversion of Low-Power Pulsed Nd:YAG Laser with Resonance of Second Harmonic

    E-Print Network [OSTI]

    Kung, Andy

    Numerical Analysis of Fifth-Harmonic Conversion of Low-Power Pulsed Nd:YAG Laser with Resonance of Second Harmonic Lien-Bee CHANG1? , S. C. WANG1 and A. H. KUNG1;2 1 Institute of Electro March 13, 2003) A model for the fifth-harmonic generation of pulsed IR lasers involving an external ring

  1. Developing and Testing a Trafficability Index for Planting Corn and Cotton in the Texas Blackland Prairie

    E-Print Network [OSTI]

    Helms, Adam J.

    2010-07-14T23:59:59.000Z

    to producers because the high water holding capacity is a product of a high clay percentage. This research was aimed to develop and test an expert-based trafficabililty index, based upon soil moisture, for planting cotton (Gossypium hirsutum L.) and corn (Zea...

  2. Explore the Genetic Frontier: Biotechnology and Cotton-Texas' Biggest Crop

    E-Print Network [OSTI]

    Boecker, Steve; Edelman, Jaime; Gergini, Timm; Hawkins, Carole; Hinnant, Thomas; O'Neill, Kelli

    2002-09-18T23:59:59.000Z

    This publication is one of the Explore the Genetic Frontier series brochures that discuss the use of biotechnology to develop new varieties of plants for human needs. Texas is the No. 1 producer of cotton in the United States. This brochure...

  3. Polarization Calibration of VLBI Data W. D. Cotton, N.R.A.O.

    E-Print Network [OSTI]

    Groppi, Christopher

    Polarization Calibration of VLBI Data W. D. Cotton, N.R.A.O. 9 June 1992 ABSTRACT This document discusses several techniques for the calibration of the polarized response of radio interferometers. Special model are discussed. The interaction between phase calibration and polariza tion calibration

  4. Row spacing effects on the canopy light extinction coefficient of upland cotton

    E-Print Network [OSTI]

    Steglich, Evelyn Marie

    2000-01-01T23:59:59.000Z

    coefficient (k) in cotton (Gossypium hirsutum). Treatments consisted of four row spacings (0.19-m, 0.38-m, 0.76-m, and 1.00-m) and four plant densities [148, 222, 296, 445 (1998) and 371 (1999) thousand plants ha-1] with each treatment replicated three times...

  5. The influence of cotton allotments on land values in Ellis County, Texas, 1955-58

    E-Print Network [OSTI]

    Marwitz, Alton Henry

    1963-01-01T23:59:59.000Z

    of ob- of Multiple serve- Determination Intercept fiona Rr a Acres of Cotton Allotment bl Acres Acres of of Nen- Cropland Cropland b2 b3 Type of Road b Value of Production Buildings Index b5 b6 Distance to Dallas or Fort Worth b...

  6. Contextual appraisal of GM cotton diffusion in South Africa Michel Fok1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Contextual appraisal of GM cotton diffusion in South Africa Michel Fok1 , Jean-Luc Hofs1 , Marnus Gouse2 , Johann Kirsten2 1 CIRAD, France ; 2 University of Pretoria, South Africa Published in: Life the introduction of GMC and this causes observers to question the so-called success story of GMC in South Africa

  7. Cotton Production in Far West Texas with Emphasis on Irrigation and Fertilization.

    E-Print Network [OSTI]

    Longenecker, D. E. (Donald E.); Thaxton, E. L.; Lyerly, P. J. (Paul J.)

    1963-01-01T23:59:59.000Z

    production have not even been ap- *Respectively, associate agronomist, Substation No. 17, El Paso, Texas; associate agronomist, Substation No. 9, Pecos, Texas; and superintendent and research coordina- tor, Substation No. 17, El Paso, Texas. proached... on Cotton Yields 5 ....................................................................... Substation 17 5 ................................................................................. Fabens 6 Pecos...

  8. Modeling branching effects on source-sink relationships of the cotton plant , Vronique Letort2

    E-Print Network [OSTI]

    Boyer, Edmond

    -structural models simulate the architectural development and physiological functioning of plants. Most of them to trace back the dynamics of the source-sink relationship within the plant [12]. A few studies have beenModeling branching effects on source-sink relationships of the cotton plant Dong Li1 , Véronique

  9. Cotton Production under Traditional and Regulated Deficit Irrigation Schemes in Southwest Texas

    E-Print Network [OSTI]

    Wen, Yujin

    2012-10-19T23:59:59.000Z

    phenological/physiological responses in Southwest Texas. The results showed that: 1) The threshold deficit ratio for a traditional deficit irrigation scheme falls between 0.7 and 0.8 for cotton production in Southwest Texas under a low energy precision...

  10. Cell synchrony and chromosomal protocols for somatic cells of cotton gossypium hirsutum

    SciTech Connect (OSTI)

    Van`t Hof, J.; Lamm, S.S.

    1994-10-10T23:59:59.000Z

    The intent of this pamphlet is to share information with others who are interested in useful protocols for cotton cytogenetics and cytology. The protocols described are a beginning effort and they are expected to be improved. All methods, results and data given pertain to cultivar MD 51ne. We are not satisfied with our results of in situ hybridization.

  11. Evaluation of di-syston as a seed treatment for control of certain cotton pests

    E-Print Network [OSTI]

    Zapata T. Mario J

    1957-01-01T23:59:59.000Z

    as ~ see4 appli- eattoa, patrolling th % WhM M~NO l h pt t (Ihtt )f . 80 I\\y poliar spray resulted in somavhat less effective oontrol. Ivy et, al. (1950), studying the different methods of application of sahradan to cotton, found that seed treatment...

  12. Salt Sensitivity and the Activities of the H+ -ATPases in Cotton Seedlings

    E-Print Network [OSTI]

    Schumaker, Karen

    Salt Sensitivity and the Activities of the H+ -ATPases in Cotton Seedlings Howard Lin, Sandra S environ- ments. Sensitivityto high levels of salt in plants is associated with an inability to effectively+ -pumping ATPases may provide the driving force for Na+ transport via Na+ -H+ exchangers. In a salt

  13. Mortality of adult Helicoverpa zea (Lepidoptera: Noctuidae) in cotton treated with a feeding-based attracticide

    E-Print Network [OSTI]

    Younger, Cole David

    2000-01-01T23:59:59.000Z

    Applications of a sucrose syrup-based feeding stimulant/toxicant mixture in one row wide strips for killing adult Helicoverpa zea in corn and cotton were made in several geographic locations in Texas. These areas were the Lower Rio Grande Valley...

  14. Mortality of adult Helicoverpa zea (Lepidoptera: Noctuidae) in cotton treated with a feeding-based attracticide

    E-Print Network [OSTI]

    Younger, Cole David

    2000-01-01T23:59:59.000Z

    Applications of a sucrose syrup-based feeding stimulant/toxicant mixture in one row wide strips for killing adult Helicoverpa zea in corn and cotton were made in several geographic locations in Texas. These areas were the Lower Rio Grande Valley...

  15. Antibiosis and Preferences as Factors in the Resistance of Certain Cottons to Pink Bollworm Attack

    E-Print Network [OSTI]

    Reed, David Kent

    1960-01-01T23:59:59.000Z

    this to say about resistance to the boll weevil in cotton: "Resis- tanoe to veewils has shown wp in the follovtng mubmts: zed plant color, plant hairiness, ancE absence of stem glands. All have one feature in canaan; they proiuce simpl? but zather dxastic...

  16. Elucidating the solid, liquid and gaseous products from batch pyrolysis of cotton-gin trash.

    E-Print Network [OSTI]

    Aquino, Froilan Ludana

    2009-05-15T23:59:59.000Z

    Cotton-gin trash (CGT) was pyrolyzed at different temperatures and reaction times using an externally-heated batch reactor. The average yields of output products (solid/char, liquid/bio-oil, and gaseous) were determined. The heating value (HV...

  17. An Economic Comparison of Conventional and Narrow-Row Cotton Production--Southern Plains of Texas.

    E-Print Network [OSTI]

    Young, Kenneth B.; Adams, James R.

    1977-01-01T23:59:59.000Z

    JUN ~ 3 1977 Texas A&M University June 19' An Economic Comparison of Coventional and Narrow-Row -- Cotton Production-Southern High Plains of Texas The Texas Agricultural Experiment Station, J. E. Miller, Director' The Texas A&M University.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4 Yield Comparisons .......................................... 4 Differences in Inputs Used ............... :................... 6 Fertil izer and Irrigation Inputs . . .......................... 6 Seeding rate...

  18. Evaluation of chlorophyll fluorescence as a tool for the identification of drought tolerance in upland cotton

    E-Print Network [OSTI]

    Longenberger, Polly Suzanne

    2009-05-15T23:59:59.000Z

    dryland and irrigated field conditions in 2006 and dryland field conditions in 2007 at College Station, TX............................................................................. 45 9 Variance analysis for Fv'/Fm' measurement taken after 5 hours..., region of adaptation, and developer for cotton genotypes planted in 2005, 2006, and 2007 ...................................................................... 20 2 Variance analysis for Fv'/Fm' measurement taken after 5 hours of incubation for 19...

  19. Errors associated with particulate matter measurements on rural sources: appropriate basis for regulating cotton gins

    E-Print Network [OSTI]

    Buser, Michael Dean

    2004-09-30T23:59:59.000Z

    .................................................................... 195 Estimating PSD Characteristics Based on EPA?s 1996 AP-42 List of Emission Factors.................................................................................199 SUMMARY AND CONCLUSIONS... electron microscope photograph of cotton gin exhaust particles. ..........................................................................................................94 Figure 16. The EPA ideal PM10 and PM2.5 sampler penetration curves overlaid...

  20. Forget not the wombe that bare you, and the brest that gave you sucke: John Cottons sermons on Canticles and Revelation and his apocalyptic vision for England

    E-Print Network [OSTI]

    Chi, Joseph Jung Uk

    2009-07-03T23:59:59.000Z

    The tumultuous events that erupted in Scotland and England c.1637 1650 sparked tremendous interest in John Cotton. As a result he turned to two Biblical books, Canticles and Revelation, to determine whether those events ...

  1. Dynamics of harmonically-confined systems: Some rigorous results

    SciTech Connect (OSTI)

    Wu, Zhigang, E-mail: zwu@physics.queensu.ca; Zaremba, Eugene, E-mail: zaremba@sparky.phy.queensu.ca

    2014-03-15T23:59:59.000Z

    In this paper we consider the dynamics of harmonically-confined atomic gases. We present various general results which are independent of particle statistics, interatomic interactions and dimensionality. Of particular interest is the response of the system to external perturbations which can be either static or dynamic in nature. We prove an extended Harmonic Potential Theorem which is useful in determining the damping of the centre of mass motion when the system is prepared initially in a highly nonequilibrium state. We also study the response of the gas to a dynamic external potential whose position is made to oscillate sinusoidally in a given direction. We show in this case that either the energy absorption rate or the centre of mass dynamics can serve as a probe of the optical conductivity of the system. -- Highlights: We derive various rigorous results on the dynamics of harmonically-confined atomic gases. We derive an extension of the Harmonic Potential Theorem. We demonstrate the link between the energy absorption rate in a harmonically-confined system and the optical conductivity.

  2. Higher harmonics increase LISA's mass reach for supermassive black holes

    E-Print Network [OSTI]

    K. G. Arun; Bala R. Iyer; B. S. Sathyaprakash; Siddhartha Sinha

    2007-06-05T23:59:59.000Z

    Current expectations on the signal to noise ratios and masses of supermassive black holes which the Laser Interferometer Space Antenna (LISA) can observe are based on using in matched filtering only the dominant harmonic of the inspiral waveform at twice the orbital frequency. Other harmonics will affect the signal-to-noise ratio of systems currently believed to be observable by LISA. More significantly, inclusion of other harmonics in our matched filters would mean that more massive systems that were previously thought to be {\\it not} visible in LISA should be detectable with reasonable SNRs. Our estimates show that we should be able to significantly increase the mass reach of LISA and observe the more commonly occurring supermassive black holes of masses $\\sim 10^8M_\\odot.$ More specifically, with the inclusion of all known harmonics LISA will be able to observe even supermassive black hole coalescences with total mass $\\sim 10^8 M_\\odot (10^9M_\\odot)$ (and mass-ratio 0.1) for a low frequency cut-off of $10^{-4}{\\rm Hz}$ $(10^{-5}{\\rm Hz})$ with an SNR up to $\\sim 60$ $(\\sim 30)$ at a distance of 3 Gpc. This is important from the astrophysical viewpoint since observational evidence for the existence of black holes in this mass range is quite strong and binaries containing such supermassive black holes will be inaccessible to LISA if one uses as detection templates only the dominant harmonic.

  3. Identification of DNA marker for root-knot nematode resistance gene and characterization of disease resistance gene candidates in cotton

    E-Print Network [OSTI]

    He, Limei

    2000-01-01T23:59:59.000Z

    major target in cotton breeding. To enhance the efficiency of the breeding process, it is necessary to develop molecular tools for marker-assisted selection and germplasm analysis. This research focused on investigation of the underlying genetics...

  4. Efficacy of abamectin as a seed treatment for control of Meloidogyne incognita and Rotylenchulus reniformis on cotton

    E-Print Network [OSTI]

    Faske, Travis Ryan

    2009-06-02T23:59:59.000Z

    ................... 55 1 CHAPTER I INTRODUCTION AND LITERATURE REVIEW Cotton production in the United States accounts for one quarter of the world?s lint production. In 2004, 5.3 million hectares produced 2.2 x 10 10 kg... plant-parasitic nematodes, which are found in every state where cotton is produced (Koenning et al., 2004). Meloidogyne incognita (root-knot nematode) and Rotylenchulus reniformis (reniform nematode) are among the most important plant...

  5. Plot size and location within a cotton block: their effects on the canopy temperature function and crop water stress index

    E-Print Network [OSTI]

    Gaitan, Camilo Alberto

    1988-01-01T23:59:59.000Z

    PLOT SIZE AND LOCATION WITHIN A COTTON BLOCK: THEIR EFFECTS ON THE CANOPY TEMPERATURE FUNCTION AND CROP WATER STRESS INDEX A Thesis CAMILO ALBERTO GAITAN Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1988 Major Subject: Agricultural Engineering PLOT SIZE AND LOCATION WITHIN A COTTON BLOCK: THEIR EFFECTS ON THE CANOPY TEMPERATURE FUNCTION AND CROP WATER STRESS INDEX A Thesis by CAMILO ALBERTO...

  6. The Texas crop and livestock reporting service's data accumulation technique for cotton and an investigation into its reliability

    E-Print Network [OSTI]

    Gallant, Francis Xavier

    1971-01-01T23:59:59.000Z

    THE TEXAS CROP AND LIVESTOCK REPORTING SERVICE ~ S DATA ACCUMULATION TECHNIQUE FOR COTTON AND AN INVESTIGATION INTO ITS RELIABILITY A Thesis by FRANCIS XAVIER GALLANT, JR. Submitted to the Graduate College of Texas ARM University in partial... fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1971 Major Subject: Economics THE TEXAS CROP AND LIVESTOCK REPORTING SERVICE'S DATA ACCUMULATION TECHNIQUE FOR COTTON AND AN INVESTIGATION INTO ITS RELIABILITY A Thesis By FRANCIS...

  7. The interaction of nitrogen and magnesium deficiences in certain aspects of the physiology of the cotton plant

    E-Print Network [OSTI]

    Ghosh, Debabrata

    1961-01-01T23:59:59.000Z

    THE INTERACTION OF NITROGEN AND MAGNESIUM DEFICIENCIES IN CERTAIN ASPECTS OF THE PHYSIOLOGY OF THE COTTON PLANT A Thesis By DEBABRATA GHOSH Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE January 1961 Major Subject: plant physiology THE INTERACTION OF NITROGEN AND MAGNESIUM DEFICIENCIES IN CERTAIN ASPECTS OF THE PHYSIOLOGY OF THE COTTON PLANT A Thesis By DEBABRATA...

  8. The Effect of Time and Rate of Application of Nitrate of Soda on the Yield of Cotton.

    E-Print Network [OSTI]

    Reynolds, E. B. (Elbert Brunner); Langley, B. C. (Bryon Caldwell); Johnson, P. R. (Paul Rufus)

    1934-01-01T23:59:59.000Z

    TEXAS AGRICULTURAL EXPERIHENT STATIDJ A. R. CONNER, DIRECTOR COLLEGE STATION, BRAZOS COUNTY. TEXAS BULLETIN NO. 490 MARCH, 1934 .--' --7 , The Effect of Time and Rate of Application of Nitrate of Soda on the Yield of Cotton - AGRICULTURAL... bolls and not by increasing the length of lint or percentage of lint, as shown in experiments at Nacogdoches and Troup, during four years ending 1930, to determine the best time and rate of applica- tion of nitrate of soda for cotton...

  9. Harmonic entanglement in a degenerate parametric down conversion

    E-Print Network [OSTI]

    Sintayehu Tesfa

    2007-07-25T23:59:59.000Z

    We study the harmonic entanglement and squeezing in a two-mode radiation produced in a degenerate parametric down conversion process coupled to a two-mode vacuum reservoir employing the linearization procedure. It is found that there is a quadrature entanglement between the harmonically related fundamental and second-harmonic modes and the superimposed radiation exhibits a significant two-mode squeezing. The entanglement exits even when there is no two-mode squeezing, since the correlation leading to these phenomena are essentially different. In addition, the more the external coherent light is down converted, the more stronger the entanglement and mean photon number of the two-mode radiation would be which is not generally true for squeezing.

  10. Unitary approach to the quantum forced harmonic oscillator

    E-Print Network [OSTI]

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

    2014-08-31T23:59:59.000Z

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

  11. Harmonic measurements made on the upgraded New Zealand inter-island HVdc transmission system

    SciTech Connect (OSTI)

    Miller, A.J.V.; Dewe, M.B. (Univ. of Canterbury, Christchurch (New Zealand))

    1994-07-01T23:59:59.000Z

    This paper introduces the recent upgrade to the New Zealand inter-island HVdc transmission system. It then details the procedure of one of several tests conducted to measure harmonic levels created by the upgraded transmission system. Harmonic levels were measured using the CHART (Continuous Harmonic Analysis in Real-Time) harmonic monitoring instrumentation. The connection of CHART to the high voltage network and its configuration during the test is discussed. A sample of results gathered while monitoring are presented, including characteristic harmonics of the converter, and maximum voltage and current levels up to the 50th harmonic for each of the three a.c. phases. During the tests one of the two a.c. harmonic filters was switched out to observe its effect on harmonic levels. It was found that with both a.c. harmonic filters operating, most harmonic levels were lower than with only one filter operating. However some harmonic levels, namely the 4th harmonic, were larger with both filters operating. The paper is concluded with a discussion of the results and of the difficulties encountered in measuring harmonics of very low level.

  12. Bi-harmonic cantilever design for improved measurement sensitivity in tapping-mode atomic force microscopy

    SciTech Connect (OSTI)

    Loganathan, Muthukumaran; Bristow, Douglas A., E-mail: dbristow@mst.edu [Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, Missouri 65401 (United States)

    2014-04-15T23:59:59.000Z

    This paper presents a method and cantilever design for improving the mechanical measurement sensitivity in the atomic force microscopy (AFM) tapping mode. The method uses two harmonics in the drive signal to generate a bi-harmonic tapping trajectory. Mathematical analysis demonstrates that the wide-valley bi-harmonic tapping trajectory is as much as 70% more sensitive to changes in the sample topography than the standard single-harmonic trajectory typically used. Although standard AFM cantilevers can be driven in the bi-harmonic tapping trajectory, they require large forcing at the second harmonic. A design is presented for a bi-harmonic cantilever that has a second resonant mode at twice its first resonant mode, thereby capable of generating bi-harmonic trajectories with small forcing signals. Bi-harmonic cantilevers are fabricated by milling a small cantilever on the interior of a standard cantilever probe using a focused ion beam. Bi-harmonic drive signals are derived for standard cantilevers and bi-harmonic cantilevers. Experimental results demonstrate better than 30% improvement in measurement sensitivity using the bi-harmonic cantilever. Images obtained through bi-harmonic tapping exhibit improved sharpness and surface tracking, especially at high scan speeds and low force fields.

  13. Cascaded Cerenkov third-harmonic generation in random quadratic media

    SciTech Connect (OSTI)

    Ayoub, Mousa; Roedig, Philip; Imbrock, Joerg; Denz, Cornelia [Institute of Applied Physics and Center for Nonlinear Science (CeNoS), Westfaelische Wilhelms-Universitaet Muenster, Corrensstrasse 2, 48149 Muenster (Germany)

    2011-12-12T23:59:59.000Z

    We investigate experimentally and theoretically the conical emission of Cerenkov-type third-harmonic generation in strontium barium niobate of random 2D-{chi}{sup (2)} distribution. The azimuthal intensity distribution is explained by the polarization properties of the fundamental and Cerenkov second-harmonic waves, depending on the cascaded origin of the generation process. Moreover, we show the role of the individual domain shape in an additional modulation on the conical emission, controlled by the electrical switching of the spontaneous polarization of the ferroelectric medium.

  14. High-order harmonic generation in a capillary discharge

    DOE Patents [OSTI]

    Rocca, Jorge J.; Kapteyn, Henry C.; Mumane, Margaret M.; Gaudiosi, David; Grisham, Michael E.; Popmintchev, Tenio V.; Reagan, Brendan A.

    2010-06-01T23:59:59.000Z

    A pre-ionized medium created by a capillary discharge results in more efficient use of laser energy in high-order harmonic generation (HHG) from ions. It extends the cutoff photon energy, and reduces the distortion of the laser pulse as it propagates down the waveguide. The observed enhancements result from a combination of reduced ionization energy loss and reduced ionization-induced defocusing of the driving laser as well as waveguiding of the driving laser pulse. The discharge plasma also provides a means to spectrally tune the harmonics by tailoring the initial level of ionization of the medium.

  15. Harmonic mean, the Gamma factor and Speed of Light

    E-Print Network [OSTI]

    Chandru Iyer

    2008-11-17T23:59:59.000Z

    The relationship between the harmonic mean and special relativity is concisely elucidated. The arguments in favor and against SRT are explored. It is shown that the ratio of the speed of light to the harmonic mean of the onward and return speeds of light in a moving frame under Newtonian mechanics, when equitably distributed between space and time as a correction, leads to the Lorentz transformation. This correction implies an apparent contraction of objects and time dilation. However, the symmetry of the onward and inverse transformations give a different meaning to the gamma factor

  16. On the harmonic oscillator properties in a twisted Moyal plane

    E-Print Network [OSTI]

    Ezinvi Baloitcha; Mahouton Norbert Hounkonnou; Dine Ousmane Samary

    2012-03-25T23:59:59.000Z

    This work prolongs, using an operator method, the investigations started in our recent paper J. Math. Phys. 51., 102108 on the spectrum and states of the harmonic oscillator on twisted Moyal plane, where rather a Moyal-star-algebraic approach was used. The physical spectrum and states of the harmonic oscillator on twisted Moyal space, obtained here by solving the corresponding differential equation, are similar to those of the ordinary Moyal space, with different parameters. This fortunately contrasts with the previous study which produced unexpected results, i.e. infinitely degenerate states with energies depending on the coordinate functions.

  17. Harmonic analysis on a galois field and its subfields

    E-Print Network [OSTI]

    A. Vourdas

    2006-10-17T23:59:59.000Z

    Complex functions $\\chi (m)$ where $m$ belongs to a Galois field $GF(p^ \\ell)$, are considered. Fourier transforms, displacements in the $GF(p^ \\ell) \\times GF(p^ \\ell)$ phase space and symplectic $Sp(2,GF(p^ \\ell))$ transforms of these functions are studied. It is shown that the formalism inherits many features from the theory of Galois fields. For example, Frobenius transformations are defined which leave fixed all functions $h(n)$ where $n$ belongs to a subfield $GF(p^ d)$ of the $GF(p^ \\ell)$. The relationship between harmonic analysis (or quantum mechanics) on $GF(p^ \\ell)$ and harmonic analysis on its subfields, is studied.

  18. Constraint damping in the Z4 formulation and harmonic gauge

    E-Print Network [OSTI]

    Carsten Gundlach; Jose M. Martin-Garcia; Gioel Calabrese; Ian Hinder

    2005-07-14T23:59:59.000Z

    We show that by adding suitable lower-order terms to the Z4 formulation of the Einstein equations, all constraint violations except constant modes are damped. This makes the Z4 formulation a particularly simple example of a lambda-system as suggested by Brodbeck et al. We also show that the Einstein equations in harmonic coordinates can be obtained from the Z4 formulation by a change of variables that leaves the implied constraint evolution system unchanged. Therefore the same method can be used to damp all constraints in the Einstein equations in harmonic gauge.

  19. BLIND HARMONIC ADAPTIVE DECOMPOSITION APPLIED TO SUPERVISED SOURCE Benoit Fuentes, Roland Badeau, Gal Richard

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    BLIND HARMONIC ADAPTIVE DECOMPOSITION APPLIED TO SUPERVISED SOURCE SEPARATION Benoit Fuentes through an algorithm called Blind Harmonic Adaptive Decomposition (BHAD). This algorithm provides [1]. However, performing this task in a completely blind way remains challenging, basically due

  20. Ultrasensitive Optical Shape Characterization of Gold Nanoantennas Using Second Harmonic Generation

    E-Print Network [OSTI]

    Dalang, Robert C.

    Ultrasensitive Optical Shape Characterization of Gold Nanoantennas Using Second Harmonic Generation for the sensitive optical characterization of plasmonic nanostructures. Furthermore, defects located where on the second harmonic signal. KEYWORDS: Plasmonics, nonlinear optics, surface integral formulation, realistic

  1. Wideband phased array antennas and compact, harmonic-suppressed microstrip filters

    E-Print Network [OSTI]

    Tu, Wen-Hua

    2009-05-15T23:59:59.000Z

    . Since the electromagnetic spectrum is limited and has to be shared, interference is getting serious as more and more wireless applications emerge. Filters are key components to prevent harmonic interference. The harmonic signals can be suppressed...

  2. Wideband phased array antennas and compact, harmonic-suppressed microstrip filters

    E-Print Network [OSTI]

    Tu, Wen-Hua

    2009-05-15T23:59:59.000Z

    . Since the electromagnetic spectrum is limited and has to be shared, interference is getting serious as more and more wireless applications emerge. Filters are key components to prevent harmonic interference. The harmonic signals can be suppressed...

  3. Harmonic analysis of climatological sea surface salinity Tim P. Boyer and Sydney Levitus

    E-Print Network [OSTI]

    Harmonic analysis of climatological sea surface salinity Tim P. Boyer and Sydney Levitus Ocean: Boyer, T. P., and S. Levitus, Harmonic analysis of climatological sea surface salinity, J. Geophys. Res

  4. Fault Detection and Diagnostics for Non-Intrusive Monitoring Using Motor Harmonics

    E-Print Network [OSTI]

    Orji, Uzoma A.

    Harmonic analysis of motor current has been used to track the speed of motors for sensorless control. Algorithms exist that track the speed of a motor given a dedicated stator current measurement, for example. Harmonic ...

  5. A study of soap stock from cotton seed oil as influenced by variations in the cooking temperature of the cotton seed meats

    E-Print Network [OSTI]

    North, Harvey Steinle

    1932-01-01T23:59:59.000Z

    arrived at by stirring the filtered oil with water and allowin the mixture to stand for a few minutes. This phenomenon is characteristic of the phosphatides, as they 2 swell and precipitate, from oil, when wet. 6 Jamcson and Hauman found... that an increase in impurities amounting to 0. 45$ increased the amount of oil emulsified in the soap stook and the refining loss was raised from 6. 4p to 9. 8$. The previous work on the cooking of cotton seed meats seems to indioate the presence of some...

  6. Improved gauge driver for the generalized harmonic Einstein system Lee Lindblom and Bela Szilagyi

    E-Print Network [OSTI]

    Lindblom, Lee

    Improved gauge driver for the generalized harmonic Einstein system Lee Lindblom and Be´la Szila´gyi

  7. A three-phase converter model for harmonic analysis of HVDC systems

    SciTech Connect (OSTI)

    Xu, W.; Drakos, J.E.; Mansour, Y.; Chang, A. (B.C. Hydro, Burnaby, British Columbia (Canada))

    1994-07-01T23:59:59.000Z

    An equivalent circuit model is presented to model bridge converters for three-phase HVDC harmonic power flow analysis. The validity and accuracy of the model are verified by comparing simulation results against field test results. The model is interfaced with a multiphase harmonic load flow program to investigate the generation of non-characteristic harmonics from HVDC links and the flow of HVDC harmonics in a real system.

  8. Wave kernels for the Dirac, Euler operators and the harmonic oscillator

    SciTech Connect (OSTI)

    Mohameden, Ahmedou Yahya Ould, E-mail: ahmeddou2011@yahoo.fr; Moustapha, Mohamed Vall Ould, E-mail: khames@univ-nkc.mr [Universit des Sciences, de Technologie et de la Medcine (USTM) Facult des Sciences et Techniques. Dpartement de Mathmatiques et Informatique, Unit de Recherche: Analyse, EDP et Modlisation: (AEDPM) B.P: 5026, Nouakchott-Mauritanie (United States)

    2014-03-15T23:59:59.000Z

    Explicit solutions for the wave equations associated to the Dirac, Euler operators and the harmonic oscillator are given.

  9. Enhanced Harmonic Up-Conversion Using a Hybrid HGHG-EEHG Scheme

    SciTech Connect (OSTI)

    Marksteiner, Quinn R. [Los Alamos National Laboratory; Bishofberger, Kip A. [Los Alamos National Laboratory; Carlsten, Bruce E. [Los Alamos National Laboratory; Freund, Henry P. [Los Alamos National Laboratory; Yampolsky, Nikolai A. [Los Alamos National Laboratory

    2012-04-30T23:59:59.000Z

    We introduce a novel harmonic generation scheme which can be used, for a given desired harmonic, to achieve higher bunching factors, weaker chicanes, and/or less final energy spread than can be achieved using Echo-Enabled Harmonic Generation. This scheme only requires a single laser with relatively low power, and is a hybrid of High-Gain Harmonic Generation and EEHG. We present a design of this scheme applied to the Next Generation Light Source (NGLS).

  10. Web-assisted tunneling in the kicked harmonic oscillator

    E-Print Network [OSTI]

    Andr R. R. Carvalho; Andreas Buchleitner

    2004-09-20T23:59:59.000Z

    We show that heating of harmonically trapped ions by periodic delta kicks is dramatically enhanced at isolated values of the Lamb-Dicke parameter. At these values, quasienergy eigenstates localized on island structures undergo avoided crossings with extended web-states.

  11. LOWPASS BROADBAND HARMONIC FILTER DESIGN A THESIS SUBMITTED TO

    E-Print Network [OSTI]

    Hava, Ahmet

    . Nevzat ZAY METU, (EE) _____________________ Dr. Ahmet Erbil NALACI (Energy Market Regulatory Authority regulation, energy efficiency, size, and cost. The parallel/series harmonic resonance problem related issues/currents. Thus, the size and the performance of the filter can be optimized. The analytical method is verified

  12. HHFW (High Harmonic Fast Wave) Eddy Current Analysis for Antenna

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    1 NSTX HHFW (High Harmonic Fast Wave) Eddy Current Analysis for Antenna NSTX-CALC-24-03-01 June 1 performed.) The model was first built for NSTX to verify the eddy current effect on antenna during plasma force of the induced eddy current in the components. The force data was transferred to the structural

  13. Classical thermodynamics of particles in harmonic traps Martin Ligarea

    E-Print Network [OSTI]

    Ligare, Martin

    , and the heat capacities. I also consider cyclic thermodynamic processes in a harmonically confined gas. © 2010 of state for a gas of N noninteract- ing particles in a rigid volume V is derived in almost every text and pressure vary with position within such traps, and the volume of the gas is not well defined

  14. Valency of Harmonic Mappings onto Bounded Convex Domains

    E-Print Network [OSTI]

    1910-30-82T23:59:59.000Z

    [11] considered harmonic mappings of D to K that extend continuously to n- valent sense-preserving ..... ?3(u) = 8(1 + 35u)3?2(u) + 27(13u ? 1)(1 + 3u)3. Note that ?3(0) = ?3 = 0; ..... conjecture of H. S. Shapiro, Math. Proc. Cambridge Phil.

  15. SPEECH ENHANCEMENT USING HARMONIC REGENERATION Cyril Plapous 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SPEECH ENHANCEMENT USING HARMONIC REGENERATION Cyril Plapous 1 , Claude Marro 1 , Pascal Scalart 2 in enhanced speech because of the non reliability of estimators for small signal- to-noise ratios. We propose The problem of enhancing speech degraded by additive noise, when only the noisy speech is available, has been

  16. Harmonic superspace formalism and the consistent chiral anomaly

    SciTech Connect (OSTI)

    Li, W.

    1986-08-01T23:59:59.000Z

    The harmonic superspace formalism has been used to construct the consistent chiral anomaly in N = 1, d = 6 supersymmetric Yang-Mills thoery. The expressions of the gauge anomaly ..delta../sub s//sup phi/ and of the supersymmetric anomaly ..delta../sub SUSY//sup phi/ are given together with the consistent condition. 7 refs.

  17. Sliding-mode amplitude control techniques for harmonic oscillators

    E-Print Network [OSTI]

    Marquart, Chad A.

    2007-09-17T23:59:59.000Z

    signal operating at frequencies ranging from 170 MHz to 2.1 GHz. Total harmonic distortion is maintained below 0:8% for an oscillation amplitude of 2 Vpp over the entire tuning range. Phase noise is measured as -105.6 dBc/Hz at 1.135 GHz with a 1 MHz...

  18. Generation of harmonics and supercontinuum in nematic liquid crystals

    SciTech Connect (OSTI)

    Nyushkov, B N; Trashkeev, S I; Klementyev, Vasilii M; Pivtsov, V S; Kobtsev, Sergey M

    2013-02-28T23:59:59.000Z

    Nonlinear optical properties of nematic liquid crystals (NLC) have been investigated. A technique for efficient laser frequency conversion in a microscopic NLC volume deposited on an optical fibre end face is experimentally demonstrated. An efficient design of a compact NLC-based IR frequency converter with a fibre input and achromatic collimator is proposed and implemented. Simultaneous generation of the second and third harmonics is obtained for the first time under pumping NLC by a 1.56-mm femtosecond fibre laser. The second-harmonic generation efficiency is measured to be about 1 %, while the efficiency of third-harmonic generation is several tenths of percent. A strong polarisation dependence of the third-harmonic generation efficiency is revealed. When pumping NLC by a cw laser, generation of spectral supercontinua (covering the visible and near-IR spectral ranges) is observed. The nonlinear effects revealed can be due to the light-induced change in the orientational order in liquid crystals, which breaks the initial symmetry and leads to formation of disclination structures. The NLC optical nonlinearity is believed to be of mixed orientationalelectronic nature as a whole. (laser optics 2012)

  19. -okfl ^ ORNL/CON-172 Linear Harmonic Analysis of Free-

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Stirling Engines N. C. J. Chen F. P. Griffin OPERATED BY MARTIN MARIETTA ENERGY SYSTEMS, INC. #12;ORNL/CON-172 Engineering Technology Division* LINEAR HARMONIC ANALYSIS OF FREE-PISTON STIRLING/dynamic problem that is associated with a free-piston Stirling engine (FPSE). The governing equations

  20. Noncommutative Harmonic Oscillator at Finite Temperature: A Path Integral Approach

    E-Print Network [OSTI]

    A. Jahan

    2012-08-01T23:59:59.000Z

    We use the path integral approach to a two-dimensional noncommutative harmonic oscillator to derive the partition function of the system at finite temperature. It is shown that the result based on the Lagrangian formulation of the problem, coincides with the Hamiltonian derivation of the partition function.

  1. On the harmonic oscillator realisation of q-oscillators

    E-Print Network [OSTI]

    D. Gangopadhyay; A. P. Isaev

    2007-01-05T23:59:59.000Z

    The general version of the bosonic harmonic oscillator realisation of bosonic q-oscillators is given. It is shown that the currently known realisation is a special case of our general solution. The investigation has been performed at the Laboratory of theoretical Physics,JINR.

  2. Generalized harmonic spatial coordinates and hyperbolic shift conditions

    E-Print Network [OSTI]

    Miguel Alcubierre; Alejandro Corichi; Jos A. Gonzlez; Daro Nez; Bernd Reimann; Marcelo Salgado

    2005-10-24T23:59:59.000Z

    We propose a generalization of the condition for harmonic spatial coordinates analogous to the generalization of the harmonic time slices introduced by Bona et al., and closely related to dynamic shift conditions recently proposed by Lindblom and Scheel, and Bona and Palenzuela. These generalized harmonic spatial coordinates imply a condition for the shift vector that has the form of an evolution equation for the shift components. We find that in order to decouple the slicing condition from the evolution equation for the shift it is necessary to use a rescaled shift vector. The initial form of the generalized harmonic shift condition is not spatially covariant, but we propose a simple way to make it fully covariant so that it can be used in coordinate systems other than Cartesian. We also analyze the effect of the shift condition proposed here on the hyperbolicity of the evolution equations of general relativity in 1+1 dimensions and 3+1 spherical symmetry, and study the possible development of blow-ups. Finally, we perform a series of numerical experiments to illustrate the behavior of this shift condition.

  3. Strong Second Harmonic Generation from the Tantalum Thioarsenates...

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

    Strong Second Harmonic Generation from the Tantalum Thioarsenates A3Ta2AsS11 (A K and Rb) Home Author: T.K. Bera, J.I. Jang, J.B. Ketterson, M.G. Kanatzidis Year: 2009 Abstract:...

  4. Linear harmonic oscillator in spaces with degenerate metrics

    E-Print Network [OSTI]

    N. A. Gromov

    2006-03-02T23:59:59.000Z

    With the help of contraction method we study the harmonic oscillator in spaces with degenerate metrics, namely, on Galilei plane and in the flat 3D Cayley-Klein spaces $R_3(j_2,j_3).$ It is shown that the inner degrees of freedom are appeared which physical dimensions are different from the dimension of the space.

  5. Harmonic Superfields in N=4 Supersymmetric Quantum Mechanics

    E-Print Network [OSTI]

    Evgeny A. Ivanov

    2011-02-11T23:59:59.000Z

    This is a brief survey of applications of the harmonic superspace methods to the models of N=4 supersymmetric quantum mechanics (SQM). The main focus is on a recent progress in constructing SQM models with couplings to the background non-Abelian gauge fields. Besides reviewing and systemizing the relevant results, we present some new examples and make clarifying comments.

  6. Harmonic analysis of the Ha velocity field of NGC 4254

    E-Print Network [OSTI]

    Laurent Chemin; Olivier Hernandez; Chantal Balkowski; Claude Carignan; Philippe Amram

    2005-12-20T23:59:59.000Z

    The ionized gas kinematics of the Virgo Cluster galaxy NGC 4254 (Messier 99) is analyzed by an harmonic decomposition of the velocity field into Fourier coefficients. The aims of this study are to measure the kinematical asymmetries of Virgo cluster galaxies and to connect them to the environment. The analysis reveals significant $m=1,2,4$ terms which origins are discussed.

  7. Analytic and algorithmic aspects of generalized harmonic sums and polylogarithms

    SciTech Connect (OSTI)

    Ablinger, Jakob; Schneider, Carsten [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstrae 69, A-4040, Linz (Austria)] [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstrae 69, A-4040, Linz (Austria); Blmlein, Johannes [Deutsches ElektronenSynchrotron, DESY, Platanenallee 6, D-15738 Zeuthen (Germany)] [Deutsches ElektronenSynchrotron, DESY, Platanenallee 6, D-15738 Zeuthen (Germany)

    2013-08-15T23:59:59.000Z

    In recent three-loop calculations of massive Feynman integrals within Quantum Chromodynamics (QCD) and, e.g., in recent combinatorial problems the so-called generalized harmonic sums (in short S-sums) arise. They are characterized by rational (or real) numerator weights also different from 1. In this article we explore the algorithmic and analytic properties of these sums systematically. We work out the Mellin and inverse Mellin transform which connects the sums under consideration with the associated Poincar iterated integrals, also called generalized harmonic polylogarithms. In this regard, we obtain explicit analytic continuations by means of asymptotic expansions of the S-sums which started to occur frequently in current QCD calculations. In addition, we derive algebraic and structural relations, like differentiation with respect to the external summation index and different multi-argument relations, for the compactification of S-sum expressions. Finally, we calculate algebraic relations for infinite S-sums, or equivalently for generalized harmonic polylogarithms evaluated at special values. The corresponding algorithms and relations are encoded in the computer algebra package HarmonicSums.

  8. Real-Time Selective Harmonic Minimization in Cascaded Multilevel Inverters

    E-Print Network [OSTI]

    Tolbert, Leon M.

    time but the output fundamental voltage will stay constant and the harmonic will still meet capability of generalizing solutions. What this means is that, if the correct range of data are used sources along with its operation as in a solar panel. This means that during a day of operation, the solar

  9. HARMONIC MOMENTS AND AN INVERSE PROBLEMS FOR THE HEAT EQUATION

    E-Print Network [OSTI]

    .3) with p HPm , where HPm = { harmonic polynomial of degree m } (m = 0, 1, 2, ), 1 #12;2 BY MISHIO KAWASHITA, YAROSLAV KURYLEV AND HIDEO SOGA and all q HPm . In the paper we describe algorithms for an approximate reconstruction of given approximate integrals (1.4) with p, q HPm , m = 0, 1, 2

  10. ANALYTIC MODEL OF HARMONIC GENERATION IN THE LOW-GAIN FEL REGIME

    E-Print Network [OSTI]

    Wurtele, Jonathan

    ANALYTIC MODEL OF HARMONIC GENERATION IN THE LOW-GAIN FEL REGIME G. Penn, M. Reinsch, J.S. Wurtele , LBNL, Berkeley, CA 94720, USA Abstract Harmonic generation using free electron lasers (FELs) requires with simulation results using the FEL code GENESIS, both for single stages of harmonic generation and for the LUX

  11. Source levels and harmonic content of whistles in white-beaked dolphins (Lagenorhynchus albirostris)

    E-Print Network [OSTI]

    Source levels and harmonic content of whistles in white-beaked dolphins (Lagenorhynchus albirostris of the 43 whistles contained an unequal number of harmonics recorded at the three hydrophones judging from of the fundamen- tal frequency is a harmonic Yost, 2000 . Rasmussen

  12. Dissipative quantum dynamics with the surrogate Hamiltonian approach. A comparison between spin and harmonic baths

    E-Print Network [OSTI]

    Koch, Christiane

    and harmonic baths David Gelmana) Fritz Haber Research Center for Molecular Dynamics, Hebrew University to a spin bath and to a harmonic bath. Converged results are obtained for the spin bath by the surrogate. The results are compared to calculations that include a finite number of harmonic modes carried out by using

  13. HARMONIC CASCADE FEL DESIGNS FOR LUX G. Penn, M. Reinsch, J. Wurtele

    E-Print Network [OSTI]

    Wurtele, Jonathan

    HARMONIC CASCADE FEL DESIGNS FOR LUX G. Penn, M. Reinsch, J. Wurtele , J.N. Corlett, W.M. Fawley, A stages of higher harmonic generation, seeded by a 200­250 nm laser of similar duration. This laser mod then produces ra- diation at a higher harmonic after entering a second, differ- ently tuned undulator. Repeated

  14. IEEE TRANSACTIONSON PLASMA SCIENCE,VOL. 21, NO. 1, FEBRUARY 1993 Phase-Matched Third Harmonic

    E-Print Network [OSTI]

    IEEE TRANSACTIONSON PLASMA SCIENCE,VOL. 21, NO. 1, FEBRUARY 1993 ~ 105 Phase-Matched Third Harmonic Generation in a Plasma J. M. Rax and N. J. Fisch Abstract-Relativistic third harmonic generationin a plasma is investigated. The growth of a third harmonic wave is limited by the difference between the phase velocity

  15. Optical Third-Harmonic Generation in Graphene Sung-Young Hong,1

    E-Print Network [OSTI]

    Hone, James

    Optical Third-Harmonic Generation in Graphene Sung-Young Hong,1 Jerry I. Dadap,2,* Nicholas Petrone York 10027, USA (Received 8 April 2013; published 10 June 2013) We report strong third-harmonic verified. In addition, our polarization- and azimuthal-rotation-dependent third-harmonic

  16. Research Report Effects of attention on the neural processing of harmonic syntax

    E-Print Network [OSTI]

    Research Report Effects of attention on the neural processing of harmonic syntax in Western music) were recorded. The five-chord progressions included 61% harmonically expected cadences (I­I6 ­IV­V­I), 26% harmonically unexpected cadences (I­I6 ­IV­V­N6 ), and 13% with one of the five chords having

  17. 3D Harmonic Mapping and Tetrahedral Meshing of Brain Imaging Data

    E-Print Network [OSTI]

    Thompson, Paul

    3D Harmonic Mapping and Tetrahedral Meshing of Brain Imaging Data Yalin Wang1 , Xianfeng Gu2 , Paul algorithm finds a harmonic map from a 3-manifold to a 3D solid sphere and the second is a novel sphere of magnetic resonance images (MRI). A heat flow method is used to solve the volumetric harmonic mapping

  18. Volumetric Harmonic Brain Mapping using a Variational Method Yalin Wang1

    E-Print Network [OSTI]

    Thompson, Paul

    Volumetric Harmonic Brain Mapping using a Variational Method Yalin Wang1 , Xianfeng Gu2 , Tony F investigation of 3D volumetric brain harmonic mapping. By transforming the full 3D brain volume to a solid volume to another. We suggest that 3D harmonic mapping of brain volumes to a solid sphere can provide

  19. High harmonic generation in relativistic laserplasma interactiona... S. Banerjee,b)

    E-Print Network [OSTI]

    Umstadter, Donald

    High harmonic generation in relativistic laser­plasma interactiona... S. Banerjee,b) A. R of Michigan, Ann Arbor, Michigan 48109 Received 2 November 2001; accepted 26 February 2002 High harmonics, in addition to the conventional atomic harmonics from bound electrons there is significant contribution

  20. Harmonic Modelling of Thyristor Bridges using a Simplified Time Domain Method

    E-Print Network [OSTI]

    Lehn, Peter W.

    1 Harmonic Modelling of Thyristor Bridges using a Simplified Time Domain Method P. W. Lehn, Senior form solution for the harmonic injection of the converter is developed. For the more general case model module takes as input the ac voltage harmonics at the point of common coupling and outputs

  1. Giant higher harmonic generation in mesoscopic metal wires and rings interrupted by tunnel junctions

    E-Print Network [OSTI]

    van Oudenaarden, Alexander

    Giant higher harmonic generation in mesoscopic metal wires and rings interrupted by tunnel 5046, 2600 GA Delft, The Netherlands Received 19 December 1997 Higher harmonic generation in mesoscopic is biased with a sinusoidal varying current, we observe giant higher harmon- ics in the conductance

  2. Harmonic Analysis of a Three-Phase Diode Bridge Rectifier based on Sampled-Data Model

    E-Print Network [OSTI]

    Lehn, Peter W.

    Harmonic Analysis of a Three-Phase Diode Bridge Rectifier based on Sampled-Data Model K. L. Lian. As demonstrated in the paper, the proposed method analytically evaluates harmonics, and obtains exact switching is to incorporate it into a harmonic power flow program to yield improved accuracy. Index Terms-- Diode Bridge

  3. Nonlinear harmonic generation and devices in doubly resonant Kerr cavities Hila Hashemi,1

    E-Print Network [OSTI]

    Nonlinear harmonic generation and devices in doubly resonant Kerr cavities Hila Hashemi,1 Alejandro of the nonlinear dynamics of third-harmonic generation 3 via Kerr 3 nonlinearities in a resonant cavity harmonic generation, by a factor of V/Q2 , where V is the modal volume and Q is the lifetime, and can even

  4. A Harmonic Approach for Calculating Daily Temperature Normals Constrained by2 Homogenized Monthly Temperature Normals3

    E-Print Network [OSTI]

    1 1 A Harmonic Approach for Calculating Daily Temperature Normals Constrained by2 Homogenized a constrained harmonic technique that forces the daily30 temperature normals to be consistent with the monthly, or harmonic even though the annual march of temperatures for some locations can be highly asymmetric. Here, we

  5. HARMONIC CASCADE FEL DESIGNS FOR LUX, A FACILTY FOR ULTRAFAST X-RAY SCIENCE

    E-Print Network [OSTI]

    Wurtele, Jonathan

    HARMONIC CASCADE FEL DESIGNS FOR LUX, A FACILTY FOR ULTRAFAST X-RAY SCIENCE J. Corlett, W. Fawley. We also discuss lattice considerations pertinent to harmonic cascade FELs, somesensitivity studies. While much of this effort has been concentrated upon SASE-based FEL's, there is an alternative "harmonic

  6. Harmonic phase-dispersion microscope with a MachZehnder interferometer

    E-Print Network [OSTI]

    Fang-Yen, Christopher

    Harmonic phase-dispersion microscope with a Mach­Zehnder interferometer Andrew Ahn, Changhuei Yang S. Feld Harmonic phase-dispersion microscopy (PDM) is a new imaging technique in which contrast is provided by differences in refractive index at two harmonically related wavelengths. We report a new

  7. Very-high-order harmonic generation from Ar atoms and Ar+ ions in superintense pulsed laser

    E-Print Network [OSTI]

    Chu, Shih-I

    Very-high-order harmonic generation from Ar atoms and Ar+ ions in superintense pulsed laser fields-high-order harmonic generation HHG from Ar atoms and Ar+ ions by means of the self-interaction-free time-order harmonic generation HHG is one of the most rapidly developing topics in the field of laser-atom molecule

  8. Second and Fourth Harmonic Frequencies in Electric Field-Induced Liquid Crystal Reorientations

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Second and Fourth Harmonic Frequencies in Electric Field-Induced Liquid Crystal Reorientations of Central Florida, Orlando, Florida, USA The second and fourth harmonics of low frequency electric field-optical modulation; liquid crystal; second and fourth harmonics 1. INTRODUCTION Nematic liquid crystal (LC) has been

  9. High-harmonic generation in plasmas from relativistic laser-electron scattering

    E-Print Network [OSTI]

    Umstadter, Donald

    High-harmonic generation in plasmas from relativistic laser-electron scattering S. Banerjee, A. R Results are presented on the generation of high harmonics through the scattering of relativistic electrons to be the emission of even- order harmonics, linear dependence on the electron density, significant amount

  10. Ultrafast Third Harmonic Micro-spectroscopy Reveals a Two-Photon Resonance in Human Hemoglobin

    E-Print Network [OSTI]

    Kleinfeld, David

    Ultrafast Third Harmonic Micro-spectroscopy Reveals a Two-Photon Resonance in Human Hemoglobin G Golden, CO 80401 Abstract The recently developed technique of ultrafast third harmonic generation (THG states in physiological solutions of human hemoglobin. Keywords: Third Harmonic Generation, Micro

  11. Search for Harmonic tremor in the Galapagos Jonathan M. Lees, University of North Carolina, Chapel Hill

    E-Print Network [OSTI]

    Geist, Dennis

    Search for Harmonic tremor in the Galapagos Jonathan M. Lees, University of North Carolina, Chapel Hill Harmonic volcano tremor can provide details of conduit physics during magma flow and volcano.71.2 Hz. Harmonic tremor has not been reported on Galapagos volcanoes, possibly because seismic

  12. Information Basic to Farm Adjustments in the High Plains Cotton Area of Texas.

    E-Print Network [OSTI]

    Thibodeaux, B. H. (Ben Hur); Bonnen, C. A. (Clarence Alfred); Magee, A. C. (Aden Combs)

    1944-01-01T23:59:59.000Z

    Division of Farm and Ranch Economics in Cooperation with Bureau of Agricultural Economics U. S. Department of Agriculture TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, Director College Station, Texas BULLETIN NO. 652 JULY 1944... INFORMATION BASIC TO FARM ADJUSTMENTS IN THE HIGH PLAINS COTTON AREA OF TEXAS A. C. MAGEE, C. A. BONNEN, and B. H. THIBODEAUX AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS GIBB GILCHRIST, President [Blank Page in Original Bulletin] This bulletin deals...

  13. An electrical resistance method for determining the fiber length distribution of cotton lint

    E-Print Network [OSTI]

    Hartstack, Albert W

    1961-01-01T23:59:59.000Z

    . . ~. . . o ~ o . i e ~ e Specimen Clamp Vise ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Page ~ ~ ~ 14 5 16 Instrumentation for %ms u'ing and Recotrd&g the Length of Cotton Fibers. . . . ~ IB 5. Ezpcrimsntal Setup for Nsasuring the Length Distribution... the difference 'n fiber length was cl earil reer, o?sibbs for inferior processing arid yarn quality, Abided et al (5) nake this statement conci ming length: A review of the previous work done on the relationship between the fiber-properties and the spinrdng...

  14. Storing of Seed Cotton as an Aid to More Efficient Ginning and Marketing.

    E-Print Network [OSTI]

    Jones, D. L.; Paulson, W. E.; Ward, J. M.

    1953-01-01T23:59:59.000Z

    Storing of Seed Cotton as an Aid to More Efficient Ginning and Marketing [Blank Page in Original Bulletin] PREFACE This project was initiated to determine the effects of mechani- , cal harvesting on the ginning business. Ginning capacity... at the peak of hand harvesting has frequently been inadequate to keep up ~ith the rate of harvesting. As the shift from hand to mechanical harvesting increases, the length of the harvesting season will inevitably be shortened. The length of the ginning...

  15. Natural control of Helicoverpa zea (Boddie) in Trans-Pecos cotton

    E-Print Network [OSTI]

    Pustejovsky, Douglas Eugene

    1998-01-01T23:59:59.000Z

    predator search area for bollworm eggs to petri dishes or 10- inch cotton terminals (Lingren et al. 1968a). Predators confined with the hosts in petri dishes consumed more eggs than those confined with hosts on 10-inch terminals, which suggested... plants in a field to deposit radioactive P labeled eggs by McDaniel and Sterling (1979). To determine predation, predators were collected and surveyed for radioactivity, Red imported fire ant, Solenopsis invicta Buren, comprised 85'lo...

  16. Soil microbial response to glyphosate-base cotton pest management systems

    E-Print Network [OSTI]

    Lancaster, Sarah Renee

    2009-05-15T23:59:59.000Z

    MATERIALS AND METHODS Soil. The soil used in this study was a Weswood clay loam (fine-silty, mixed superactive, thermic Udifluventic Haplustept). Bulk soil was collected from a fallow field that was previously planted to cotton and from a... Company, St. Louis, MO), trifluralin (Treflan HFP, Dow AgroSciences, Indianapolis, IN), fluometuron (Cotoran 4L, Griffin L.L.C., Valdosta, GA), PCNB+mefenoxam (Ridomil Gold PC GR, Syngenta Crop Protection, Inc., Greensboro, NC), and aldicarb (Temik...

  17. The effectiveness of a foliar spray of kaolinite clay in reducing transpiration of cotton plants

    E-Print Network [OSTI]

    McMichael, Bobbie Lee

    1967-01-01T23:59:59.000Z

    not have been conducted. TABLE OF CONTENTS Chapter Page I. INTRODUCTION II. REVIEW OF LITERATURE III. MATERIALS AND METHODS Preparation of the Soil Mixture and Plartting Procedures Experimental Design and Explanation of Treatments Measureme...~g Analysis oi' total number of blooms put on for each treatment Analysis of total number of boils set for each treatment Analysis of total yield of seed cotton for each treatment Analysis of total yield of lint i' or each tres. t- Analysis of total...

  18. Cottons Resistant to Wilt and Root Knot and the Effect of Potash Fertilizer in East Texas.

    E-Print Network [OSTI]

    Young, P. A. (Paul Allen)

    1943-01-01T23:59:59.000Z

    in the same field. T ton he experiments indicate that by growing only the varieties of cot- that are resistant to the combination of wilt and root knot, by using 1-potash balanced fertilizers, and by rotating cotton with Crotalari sorghum, famners can... fertilizers and resistant varieties _-____- 10 esting phosphate fertilizers in relation to wilt -__----_--------_-------- 14 Effects of phosphate and potash fertilizers on yields ___-___-_-_____---- 14 Wilt resistance test at College Station...

  19. Evaluation of the effect of plant growth regulators and GOSSYM recommendations on cotton fiber quality

    E-Print Network [OSTI]

    Shaw, Bryan Webb

    1990-01-01T23:59:59.000Z

    Station, the Texas Agricultural Extension Service, and BASF for making this research possible. Appreciation and thanks go to Roy Childers for his role in initiation of this research and his constant support throughout. Thanks also to Pam Boeck for her... fiber yield study, prior to the initiation of this research. The plots for the PGR study were established through the cooperation of the Texas Agricultural Extension Service, BASF, and individual cotton producers. The Fertilization and Irrigation...

  20. Mitigating cotton revenue risk through irrigation, insurance, and/or hedging

    E-Print Network [OSTI]

    Bise, Elizabeth Hart

    2009-05-15T23:59:59.000Z

    in the Lower Rio Grande Valley...................................................................................................56 12 Budget of a 1,000 Acre Representative Cotton Farm in the Lower Rio Grande Valley (TCE 2006 and AFPC 2006... used and are based on expected utility frameworks or stochastic dominance. Traditionally, agricultural economists tend to look at yield risk and price risk separately (TCE 2006). In the present study, the interactions of three strategies that can...

  1. Induced alteration of the stomatal reponse to water stress in cotton

    E-Print Network [OSTI]

    Thomas, James Christian

    1974-01-01T23:59:59.000Z

    ~n Cotton plants were grown both in a controlled environment. chamber and in the field. Some plants were allowed to develop iree of water stress while others were subjected to varying amounts of water stress. The stomatal response to water. stress...?af water potential, . Several reports in the literature sufgcst that the stomatos of fi. eld-grown plants react differently than those of plants grown in a controlled environment chamber. Turner and Begg (30) found that the leaf water potential...

  2. Comparative toxicity studies of sulphur acaricides on two species of spider mites attacking cotton

    E-Print Network [OSTI]

    Hallmark, Kenzy Donovan

    1954-01-01T23:59:59.000Z

    CONPARATIVE TOXICITY STUDIES OF SULFUH ACAHICIDES ON TWO SPECIE OF SPIDEH NITES ATTACKING COTTON KENZY DONOVAN HALLI&AHK A Thesis Submitted to the Graduate School oi' the Agricultural and 14echanlcal College of Texas in partial fulfillment... Ovotran- 13 Procedure Culturing technique- Dusting apparatus 1B 18 19 Spraying appsratus- Treatment procedure ?- Determination ef results ? - ? --- ? ? ? -?- hesults Conclusions- Literature Cited- 47 50 1 Results of laboratortJ' toxicity...

  3. Gossypol content of industrial cotton dust: evaluation and application of the Gossypol - Aniline complex method

    E-Print Network [OSTI]

    Gruenwald, Guillermo Jose Samuel

    1974-01-01T23:59:59.000Z

    , The lay terms used in the early days of the recognition of this disease include: "mill fever ", "weavers cough". "weaver. s a. , thma", 'cotton dust disease", "brown ung", "Noonday morning fever", etc. 17 Byssinosis symptoms may be noted after... cough incessantly and by degrees brings on asthmatic troubles. ? The American researcher, Winslow, aghast , 5 mill conditions t n the ear ly '1900's noted the hazards o "the carding room" with the clouds of f ine chokihg dust. " 5 6 Later...

  4. Comparative toxicity studies of sulphur acaricides on two species of spider mites attacking cotton

    E-Print Network [OSTI]

    Hallmark, Kenzy Donovan

    1954-01-01T23:59:59.000Z

    CONPARATIVE TOXICITY STUDIES OF SULFUH ACAHICIDES ON TWO SPECIE OF SPIDEH NITES ATTACKING COTTON KENZY DONOVAN HALLI&AHK A Thesis Submitted to the Graduate School oi' the Agricultural and 14echanlcal College of Texas in partial fulfillment... Ovotran- 13 Procedure Culturing technique- Dusting apparatus 1B 18 19 Spraying appsratus- Treatment procedure ?- Determination ef results ? - ? --- ? ? ? -?- hesults Conclusions- Literature Cited- 47 50 1 Results of laboratortJ' toxicity...

  5. Study on higher harmonic suppression using edge filter and polished Si wafer

    SciTech Connect (OSTI)

    Gupta, R. K., E-mail: rkg@rrcat.gov.in; Singh, Amol, E-mail: rkg@rrcat.gov.in; Modi, Mohammed H., E-mail: rkg@rrcat.gov.in; Lodha, G. S., E-mail: rkg@rrcat.gov.in [X-ray Optics Section, ISU Division, Raja Ramanna Centre for Advanced Technology, Indore-452013 (India)

    2014-04-24T23:59:59.000Z

    Higher harmonics contamination is a severe problem in synchrotron beamlines where grating monochromators are used. In these beamlines, absorption edge filters and critical angle mirrors are used to suppress the harmonic contaminations. In the present study, carried out using Indus-1 reflectivity beamline, a harmonic suppression characteristic of Al edge filter and polished silicon wafer are determined. It is found that the Al filter suppresses higher harmonics in 27% range whereas the polished silicon wafer can suppress the higher harmonics below 1%. The results of comparative study are discussed.

  6. Between a Rock and a Soft Place: Investigating prima facie irrationality and farmers' decision-making in the cotton region of south-western Chad

    E-Print Network [OSTI]

    Schnier, Matthias

    2012-11-04T23:59:59.000Z

    access to inputs and credit that are systemically unavailable via other crops. It will also show that social factors such as inedibility of cotton or applied informal peer-pressure to grow cotton form irrefutable elements of farmers agricultural decision...

  7. Calculation of HVDC converter noncharacteristic harmonics using digital time-domain simulation method

    SciTech Connect (OSTI)

    Sarshar, A. [Trench Electric, Scarborough, Ontario (Canada)] [Trench Electric, Scarborough, Ontario (Canada); Iravani, M.R.; Li, J. [Univ. of Toronto, Ontario (Canada). Dept. of Electrical and Computer Engineering] [Univ. of Toronto, Ontario (Canada). Dept. of Electrical and Computer Engineering

    1996-01-01T23:59:59.000Z

    In this paper, noncharacteristic harmonics of an HVdc converter station are calculated based on the use of digital time-domain simulation methods. An enhanced version of the Electromagnetic Transients Program (EMTP) is used for the studies. The noncharacteristic harmonics of interest are (1) the dc side triplen harmonics, and (2) the ac side second harmonic. Impacts of loading conditions, neutral filter, and converter firing angle on the dc side triplen harmonics are discussed. Effects of ac side network parameters, static VAR compensator (SVC), transformer half-cycle saturation, and Geomagnetically Induced Current (GIC) on the ac side second harmonic instability are also presented. This paper concludes that the digital time-domain simulation method provides significant flexibility for accurate prediction of (1) generation mechanism, and (2) adverse impacts of HVdc noncharacteristic harmonics.

  8. Completion report harmonic analysis of electrical distribution systems

    SciTech Connect (OSTI)

    Tolbert, L.M.

    1996-03-01T23:59:59.000Z

    Harmonic currents have increased dramatically in electrical distribution systems in the last few years due to the growth in non-linear loads found in most electronic devices. Because electrical systems have been designed for linear voltage and current waveforms; (i.e. nearly sinusoidal), non-linear loads can cause serious problems such as overheating conductors or transformers, capacitor failures, inadvertent circuit breaker tripping, or malfunction of electronic equipment. The U.S. Army Center for Public Works has proposed a study to determine what devices are best for reducing or eliminating the effects of harmonics on power systems typical of those existing in their Command, Control, Communication and Intelligence (C3I) sites.

  9. All-Optical Field-Induced Second-Harmonic Generation

    E-Print Network [OSTI]

    Davidson, Roderick B; Ziegler, Jed I; Avanesyan, Sergey M; Lawrie, Ben J; Haglund, Richard F

    2015-01-01T23:59:59.000Z

    Efficient frequency modulation techniques are crucial to the development of plasmonic metasurfaces for information processing and energy conversion. Nanoscale electric-field confinement in optically pumped plasmonic structures enables stronger nonlinear susceptibilities than are attainable in bulk materials. The interaction of three distinct electric fields in (chi)^3 optical processes allows for all-optical modulation of nonlinear signals. Here we demonstrate effcient third-order second harmonic generation (SHG) in a serrated nanogap plasmonic geometry that generates steep electric field gradients within a dielectric material. We utilize an ultrafast optical pump to control the plasmonically induced electric-fields and to generate bandwidth-limited ultrafast second-harmonic pulses driven by the control pulses. The combination of plasmonic metasurfaces with all-optical control and the freedom to choose the dielectric allow multiple generalizations of this concept and geometry to other four-wave mixing process...

  10. Freely floating structures trapping time-harmonic water waves (revisited)

    E-Print Network [OSTI]

    Nikolay Kuznetsov; Oleg Motygin

    2014-10-22T23:59:59.000Z

    We study the coupled small-amplitude motion of the mechanical system consisting of infinitely deep water and a structure immersed in it. The former is bounded above by a free surface, whereas the latter is formed by an arbitrary finite number of surface-piercing bodies floating freely. The mathematical model of time-harmonic motion is a spectral problem in which the frequency of oscillations serves as the spectral parameter. It is proved that there exist axisymmetric structures consisting of $N \\geq 2$ bodies; every structure has the following properties: (i) a time-harmonic wave mode is trapped by it; (ii) some of its bodies (may be none) are motionless, whereas the rest of the bodies (may be none) are heaving at the same frequency as water. The construction of these structures is based on a generalization of the semi-inverse procedure applied earlier for obtaining trapping bodies that are motionless although float freely.

  11. Damping the zero-point energy of a harmonic oscillator

    E-Print Network [OSTI]

    T. G Philbin; S. A. R. Horsley

    2013-07-31T23:59:59.000Z

    The physics of quantum electromagnetism in an absorbing medium is that of a field of damped harmonic oscillators. Yet until recently the damped harmonic oscillator was not treated with the same kind of formalism used to describe quantum electrodynamics in a arbitrary medium. Here we use the techniques of macroscopic QED, based on the Huttner--Barnett reservoir, to describe the quantum mechanics of a damped oscillator. We calculate the thermal and zero-point energy of the oscillator for a range of damping values from zero to infinity. While both the thermal and zero-point energies decrease with damping, the energy stored in the oscillator at fixed temperature increases with damping, an effect that may be experimentally observable. As the results follow from canonical quantization, the uncertainty principle is valid for all damping levels.

  12. Higher signal harmonics, LISA's angular resolution, and dark energy

    E-Print Network [OSTI]

    K. G. Arun; Bala R. Iyer; B. S. Sathyaprakash; Siddhartha Sinha; Chris Van Den Broeck

    2007-10-24T23:59:59.000Z

    It is generally believed that the angular resolution of the Laser Interferometer Space Antenna (LISA) for binary supermassive black holes (SMBH) will not be good enough to identify the host galaxy or galaxy cluster. This conclusion, based on using only the dominant harmonic of the binary SMBH signal, changes substantially when higher signal harmonics are included in assessing the parameter estimation problem. We show that in a subset of the source parameter space the angular resolution increases by more than a factor of 10, thereby making it possible for LISA to identify the host galaxy/galaxy cluster. Thus, LISA's observation of certain binary SMBH coalescence events could constrain the dark energy equation of state to within a few percent, comparable to the level expected from other dark energy missions.

  13. Discrete quadratic solitons with competing second-harmonic components

    SciTech Connect (OSTI)

    Setzpfandt, Frank; Pertsch, Thomas [Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universitaet Jena, Max-Wien-Platz 1, D-07743 Jena (Germany); Sukhorukov, Andrey A. [Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra, 0200 ACT (Australia)

    2011-11-15T23:59:59.000Z

    We describe families of discrete solitons in quadratic waveguide arrays supported by competing cascaded nonlinear interactions between one fundamental and two second-harmonic modes. We characterize the existence, stability, and excitation dynamics of these solitons and show that their features may resemble those of solitons in saturable media. Our results also demonstrate that a power threshold may appear for soliton formation, leading to a suppression of beam self-focusing which explains recent experimental observations.

  14. SU(3) symmetry in the triaxially deformed harmonic oscillator

    SciTech Connect (OSTI)

    Sugawara-Tanabe, Kazuko [Otsuma Women's University, Tama, Tokyo 206-8540 (Japan); Tanabe, Kosai [Department of Physics, Saitama University, Sakura-Ku, Saitama 338-8570 (Japan); Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center, Wako, Saitama 351-0198 (Japan); Arima, Akito [Science Museum, Japan Science Foundation, Tokyo 102-0091 (Japan); Gruber, Bruno [College of Science, Southern Illinois University, Carbondale, Illinois 62901 (United States)

    2009-10-15T23:59:59.000Z

    An anisotropic harmonic oscillator Hamiltonian can be brought into invariant form under SU(3) transformations by applying nonlinear transformations to the oscillator bosons. The classification of the single-particle levels based on this covering group predicts magic numbers for the triaxial oscillator. It is shown that when the deformation |{delta}| is not too large, the physical operators are approximated by the group operators. Estimation is carried out for the alignment of orbital angular momentum in a triaxial field.

  15. Vacuum high harmonic generation in the shock regime

    E-Print Network [OSTI]

    Bhl, P; Ruhl, H

    2015-01-01T23:59:59.000Z

    Electrodynamics becomes nonlinear and permits the self-interaction of fields when the quantised nature of vacuum states is taken into account. The effect on a plane probe pulse propagating through a stronger constant crossed background is calculated using numerical simulation and by analytically solving the corresponding wave equation. The electromagnetic shock resulting from vacuum high harmonic generation is investigated and a nonlinear shock parameter identified.

  16. Harmonic oscillator in a one-dimensional box

    E-Print Network [OSTI]

    Paolo Amore; Francisco M. Fernandez

    2009-07-31T23:59:59.000Z

    We study a harmonic molecule confined to a one--dimensional box with impenetrable walls. We explicitly consider the symmetry of the problem for the cases of different and equal masses. We propose suitable variational functions and compare the approximate energies given by the variation method and perturbation theory with accurate numerical ones for a wide range of values of the box length. We analyze the limits of small and large box size.

  17. Efficient Forward Second-Harmonic Generation from Planar Archimedean Nanospirals

    E-Print Network [OSTI]

    Davidson, Roderick B; Vargas, Guillermo; Avanesyan, Sergey M; Haglund, Richard F

    2015-01-01T23:59:59.000Z

    The enhanced electric field at plasmonic resonances in nanoscale antennas can lead to efficient harmonic generation, especially when the plasmonic geometry is asymmetric on either inter-particle or intra-particle levels. The planar Archimedean nanospiral offers a unique geometrical asymmetry for second-harmonic generation (SHG) because the SHG results neither from arranging centrosymmetric nanoparticles in asymmetric groupings, nor from non-centrosymmetric nanoparticles that retain a local axis of symmetry. Here we report forward SHG from planar arrays of Archimedean nanospirals using 15 fs pulse from a Ti:sapphire oscillator tuned to 800 nm wavelength. The measured harmonic-generation efficiencies are 2.6*10-9, 8*10-9 and 1.3*10-8 for left-handed circular, linear, and right-handed circular polarizations, respectively. The uncoated nanospirals are stable under average power loading of as much as 300 uW per nanoparticle. The nanospirals also exhibit a selective conversion between polarization states. These exp...

  18. High harmonic generation from Bloch electrons in solids

    E-Print Network [OSTI]

    Wu, Mengxi; Reis, David A; Schafer, Kenneth J; Gaarde, Mette B

    2015-01-01T23:59:59.000Z

    We study the generation of high harmonic radiation by Bloch electrons in a model transparent solid driven by a strong mid-infrared laser field. We solve the single-electron time-dependent Schr\\"odinger equation (TDSE) using a velocity-gauge method [New J. Phys. 15, 013006 (2013)] that is numerically stable as the laser intensity and number of energy bands are increased. The resulting harmonic spectrum exhibits a primary plateau due to the coupling of the valence band to the first conduction band, with a cutoff energy that scales linearly with field strength and laser wavelength. We also find a weaker second plateau due to coupling to higher-lying conduction bands, with a cutoff that is also approximately linear in the field strength. To facilitate the analysis of the time-frequency characteristics of the emitted harmonics, we also solve the TDSE in a time-dependent basis set, the Houston states [Phys. Rev. B 33, 5494 (1986)], which allows us to separate inter-band and intra-band contributions to the time-depe...

  19. Background and Reflections on the Life Cycle Assessment Harmonization Project

    SciTech Connect (OSTI)

    Heath, G. A.; Mann, M. K.

    2012-04-01T23:59:59.000Z

    Despite the ever-growing body of life cycle assessment (LCA) literature on electricity generation technologies, inconsistent methods and assumptions hamper comparison across studies and pooling of published results. Synthesis of the body of previous research is necessary to generate robust results to assess and compare environmental performance of different energy technologies for the benefit of policy makers, managers, investors, and citizens. With funding from the U.S. Department of Energy, the National Renewable Energy Laboratory initiated the LCA Harmonization Project in an effort to rigorously leverage the numerous individual studies to develop collective insights. The goals of this project were to: (1) understand the range of published results of LCAs of electricity generation technologies, (2) reduce the variability in published results that stem from inconsistent methods and assumptions, and (3) clarify the central tendency of published estimates to make the collective results of LCAs available to decision makers in the near term. The LCA Harmonization Project's initial focus was evaluating life cycle greenhouse gas (GHG) emissions from electricity generation technologies. Six articles from this first phase of the project are presented in a special supplemental issue of the Journal of Industrial Ecology on Meta-Analysis of LCA: coal (Whitaker et al. 2012), concentrating solar power (Burkhardt et al. 2012), crystalline silicon photovoltaics (PVs) (Hsu et al. 2012), thin-film PVs (Kim et al. 2012), nuclear (Warner and Heath 2012), and wind (Dolan and Heath 2012). Harmonization is a meta-analytical approach that addresses inconsistency in methods and assumptions of previously published life cycle impact estimates. It has been applied in a rigorous manner to estimates of life cycle GHG emissions from many categories of electricity generation technologies in articles that appear in this special supplemental supplemental issue, reducing the variability and clarifying the central tendency of those estimates in ways useful for decision makers and analysts. Each article took a slightly different approach, demonstrating the flexibility of the harmonization approach. Each article also discusses limitations of the current research, and the state of knowledge and of harmonization, pointing toward a path of extending and improving the meta-analysis of LCAs.

  20. Impacts of Farm Policies and Technology on the Economic Viability of Texas Southern High Plains Cotton Farms.

    E-Print Network [OSTI]

    Richardson, James W.; Smith, Edward G.

    1985-01-01T23:59:59.000Z

    we fA245 .7 B73 0, )'505 Impacts of Farm Policies and Technology on the Economic Viability of ' Texas Southern High Plains Cotton Farms ~ --rfii~tt'{ APR 201981 8-1505 August 1985 THE TEXAS AGRICULTURAL EXPERIMENT STATION/Neville P.... Clarke, Director/The Texas A&M University System/College Station, Texas (Blank Pa,ge In Origbral-BuUetlai k "",", ~- . Ai! IMPACTS OF FARM POLICIES AND TECHNOLOGY ON THE ECONOMIC VIABILITY OF TEXAS SOUTHERN HIGH PLAINS COTTON FARMS James W...

  1. Hairy Vetch, Bur Clover and Oats as Soil-Building Crops for Cotton and Corn in Texas.

    E-Print Network [OSTI]

    Morris, H. F. (Harry Forest); Johnson, P. R. (Paul Rufus); Reynolds, E. B. (Elbert Brunner)

    1950-01-01T23:59:59.000Z

    for soil improvement increased the average yields of cot- ton ancl corn about 40 percent at College Station for the 11 years, 1937-47. Vetch increased the average yield of cotton 75 to 84 percent and practically doubled the yield of corn at Tyler... yields of cotton than the use of 400 pounds of a 4-8-4 fertilizer per acre at Tyler and Nacog- doches. Hairy vetch was a better green-manure crop than oats at Tyler and oats or bur clover at Nacogdoches. The effects of plowing under hairy vetch lasted...

  2. The effect of sources of nitrogen on nitrate formation and nitrogen uptake by cotton plants growing on Miller clay loam

    E-Print Network [OSTI]

    Marcos, Zilmar Ziller

    1958-01-01T23:59:59.000Z

    ~ ~ ~ ~ ~ 4 82 e a a 89 Eitrogen Content of' Cotton Leaves. . . . . . . . 4$ Phosphorus Content of Cotton Ieaves. . . . ~ . . 50 Potassium Content of Cott, on Ieaves . DXSCVSSXOE o o ~ a a e a ~ o ~ ~ ~ ~ o ~ ~ ~ ~ ~ 60 Effect of' Bate and, Source of...' Nitrogen on Bitte CcnoentI'Stion e e o e o ~ ~ ~ o a a o o Effect of Bate and. Source of Eitxogen on Soil pB. 62 Effect of Bate and. Source of' Of Eitl'Ogeno a o e e e o Eitrogen on ~ ~ 0 the Uptake 62 Effect of Bate and Source of Of Phosphorusi...

  3. Economic Decision Criteria for Fleahopper and Bollworm Management in Cotton: Texas Coastal Bend.

    E-Print Network [OSTI]

    Masud, Sharif M.; Benedict, John H.; Lacewell, Ronald D.

    1990-01-01T23:59:59.000Z

    (STAno ... (~ Figure 6. Economic 10 .. per acre cauaed by damage from a range of Ileahopper Inleatallon levela, a .. umlng no treatment (SP?21 SCotton). $/aere 3 ?? .....------. 25 ? 2 ?? .~~ 15. .~~ o ~~ ___ I.. .~ ___ 5. 6--------=~ ? I I. 15 20 ,. 3. Fl...EAHOPPER IMFEaTATlOU (~ Figure 7. Economic loss per acre caused by damage from a range of fleahopper infestation levels, assuming no treatment (SP-37 Cotton) . $/aere 4 ?? I. II 2 ? 2. Flgule 8. Economic loss per acre caused by damage from a range...

  4. Fruiting and Shedding of Cotton in Relation to Light and Other Limiting Factors.

    E-Print Network [OSTI]

    Dunlap, A. A. (Albert Atkinson)

    1945-01-01T23:59:59.000Z

    sunshine as a third donlinant factor essential for high yielcls of this crop and he has shown that the well established cotton fields of the ~~orld lie within the belts of "minimum cloud zones", namely, hetween 10" and 35" N and 12" and 35" S latitudes.... For esample) data taken by McDowell (40, 41) at the Iowa Park substation, under irrigated conditions, from 1932 to 1942 show that those years during 6 BULLETIN- NO. 677, TEXAS AGRICULTURAL EXPERIMENT STATION 1 which the highest rainfalls were recorded were...

  5. Use of strain gage equipment for indicating storm resistance and mechanical picking efficiency of cotton

    E-Print Network [OSTI]

    Hussain, Abu Ahmed Mainul

    1965-01-01T23:59:59.000Z

    19 7. The circular Ring Transducer and Beam Assembly 20 Circular Ring Transducer with two Strain Gages mounted on the stand. 21 The Lock Extracting Device mounted on the Wooden Carriage and the Step Pulley mounted on the Screw 23 10. The Lock... vary between 5 to 20 percent of the total yield. The efficiency oi' a mechanical cotton harvester depends on several f'actors. Some of the most, important are: (1) mach-'ne condition and adjustments; (2) spindle speed; (3) picker traveling speed...

  6. Ethylene as a factor in square abscission and stunting in fleahopper infested cotton

    E-Print Network [OSTI]

    Duffey, James Edward

    1978-01-01T23:59:59.000Z

    this study. ACKNOWLEDGMENTS 1 wish to thank my advisor Dr . R. D . Powell for his help and suggestions. I would also like to thank the members of my committee, Dr. P. W. Morgan and Dr. G. M. Krise. Thanks also go to Dr. W. L. Sterling who supplied... plant studies. Third and fourth instars of cotton fleahopper, Pseudatomoscelis seriatur Reuter, collected as described by Gaylor and Sterling (15), were obtained from the Texas A & M University Entomology Laboratory not more than one day prior...

  7. Seasonal Abundance and Dispersal of the Cotton Fleahopper as Related to Host Plant Phenology.

    E-Print Network [OSTI]

    Almand, Lyndon K.; Sterling, W.L.; Green, C.L.

    1976-01-01T23:59:59.000Z

    occurred. Croton served as a host plant both for overwintering eggs and throughout the growing season. Seasonal Abundance and Dispersal of the Cotton Fleahopper as Related to Host Plant Phenology *L. K. Almand W. L. Sterling C. L. Green... to various wind speeds also was de rmined in a wind tunnel with a testing area of about 3 lhic feet. Nymphs ;less than 24 hours old which had ltched from overwintering eggs (procedure developed I Sterling and Plapp, 1972) were collected for testing Id...

  8. A study of the effects of gibberellins on vegatative growth, fruiting and fiber quality of cotton

    E-Print Network [OSTI]

    Hoverson, R. R

    1961-01-01T23:59:59.000Z

    of gibberellic acid (1 gree per 4 ounces of inert dust) hastened ?sergeoce. There were also some indi cations of improved total germination at lcw temperatures Ranney and Bird (9) appLied L', ). i gallons per acre of a 5 ppm solution of ~wi potassiu". salt... of the influ- ence on rats of eusrgonce, or post-emergence stimulation. Johnson, Cowley, f. oninecker and Lane (7) investigated the dust formulation of gibberelllc acid on a stat~lde basis ln Texas. Early season tests on cotton at Veslaco during a cold...

  9. Transpiration and water use by cotton plants as affected by the soil application of fatty alcohols

    E-Print Network [OSTI]

    Rhoads, Frederick Milton

    1963-01-01T23:59:59.000Z

    on tz snspl: ' icn cont~ oi is almost non-existent for cotton. The reseat'ch zepo 'ted berin is one. pa. -. of a joint resea h program which is being conducred by t?e Texas Agriculcur=l Experimen Station and the Procter and Gamble Company fo. de... the fatty alcohols were incuba ed in moist soil for the pre- scribed length of time, the soil was dried in an oven, pulverized by grind- ing, placed in marked containers, and shipped to lfr. heal Thompson, of The Procter and Gamble Company (Pecos, Texas...

  10. Water and Associated Costs in the Production of Cotton and Grain Sorghum, Texas High Plains, 1955.

    E-Print Network [OSTI]

    Magee, A. C.; Hughes, William F.

    1957-01-01T23:59:59.000Z

    on sandy soils was irrigated before planting, but only about 50 percent of the cotton land on heavy soils was given a preplanting irrigation. Since 1949, changes in seedbed preparation practices, heavier rates of water application and increased insect... 3 45.55 24.84 42.23 21.52 160-acre farm-heavy land Irrigated crops 37.21 15.60 3 3 48.25 '26.64 44.93 23.32 'Entries from last column. Table 3. 'Water cost based on typical rental agreement: landlord furnishes and maintains well and pump...

  11. The fate of dimethyl p-(methylthio)phenyl phosphate in cotton plants

    E-Print Network [OSTI]

    Wendel, Lloyd Eugene

    1973-01-01T23:59:59.000Z

    -sulfoxide 0-demethyl GC-6506-sulfone Dimethyl phosphate Methyl Phosphate HSP04 0. 88 0. 10 0. 75 0. 50 0. 18 0. 32 0. 56 0. 26 0. 37 0. 04 0. 00 0. 79 0. 26 0. 03 0. 00 a/Solvent mixtures: A, 4:1 diethyl ether and acetonitrile; B, 90...THE FATE OF DIMETHYL E-(METHYLTHIO)PHENYL PHOSPHATE IN COTTON PLANTS A Thesis by LLOYD EUGENE NENDBL Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE...

  12. Comparative toxicity of several sulphurs to two species of spider mites attacking cotton

    E-Print Network [OSTI]

    Arrese, Luis Humberto

    1957-01-01T23:59:59.000Z

    new insecticides, such as parathion and Systox. With the development of the chlorinated hydrocarbon insecticides for use on cotton, it was found that sulphur added as a diluent, was of value in improving the dusting qualities of these materials... for the degree of May I957 Me/or Sub/act: Entcwology CQI'ARATIVE TOXICITY OF SEVERAL SULPHURS TO TWO SPECIES OF SPIUER MITES ATTACKING A 'Ihesis By Approved as to style anS content by: izaan of Cossaittee May l957 ACKH(WISDGHNEHT The author wishes...

  13. Effects of systemic insecticides applied to cotton on Campoletis perdistinctus (Viereck)

    E-Print Network [OSTI]

    Cate, James Richard

    1968-01-01T23:59:59.000Z

    phosphate) was significantly more toxic to C. ~erdlstlnctus adults than TemilP (2-methyl-2-(. . ethylthio) propionaldehyde 0- (methylcarbamoyl) oxlme) or d1sulfoton. In greenhouse stud1es, cotton plants treated with soil applications of d1sulfoton had...). . . . . . . . . . 1 d lty f C. ~d1 tl t d lt t offered various food substances. . . . . . . . . . . 15 16 Toxicity of Azodrin, Temik and disulfoton applied topically to mixed sexes of C. erdistinctus adults 20 Toxi. c1ty of Azodr1n, Temik and disulfoton fed...

  14. Effects of systemic insecticides applied to cotton on Campoletis perdistinctus (Viereck)

    E-Print Network [OSTI]

    Cate, James Richard

    1968-01-01T23:59:59.000Z

    phosphate) was significantly more toxic to C. ~erdlstlnctus adults than TemilP (2-methyl-2-(. . ethylthio) propionaldehyde 0- (methylcarbamoyl) oxlme) or d1sulfoton. In greenhouse stud1es, cotton plants treated with soil applications of d1sulfoton had...). . . . . . . . . . 1 d lty f C. ~d1 tl t d lt t offered various food substances. . . . . . . . . . . 15 16 Toxicity of Azodrin, Temik and disulfoton applied topically to mixed sexes of C. erdistinctus adults 20 Toxi. c1ty of Azodr1n, Temik and disulfoton fed...

  15. The effect of excessively high rainfall on pink bollworm infested cotton

    E-Print Network [OSTI]

    Showers, Wayne Allen

    1958-01-01T23:59:59.000Z

    pounds of technical Guthion per acre at five-day inter{{mls~ in an attempt to eradicate completely all insect life within these cages. The Guthion applications vere initiated dune 14 and vere continued throughout the experimentation pmr1cd, the last... 12. 5 12. 9 101 6 101. 1 11. 4 l. 3 0. 4 17. 0 4. 4 22. 86 10, 1 11. 6 99. 7 14. 3 14 05 176 43 22. 33 9. 7 12 8 101. 5 Table 5. Yields gin uaste and value of cotton produced in evaluation stud1ss at College Station~ Texas ? 1957 Yield ? lbs...

  16. Paleoenvironment of an upper Cotton Valley (Knowles limestone) patch reef, Milam County, Texas

    E-Print Network [OSTI]

    Cregg, Allen Kent

    1982-01-01T23:59:59.000Z

    (Head of' Department) ( Mem'her ) (Member) May 198Z ABSTRACT Paleoenvironment of an Upper Cotton Valley (Knowles Limestone) Patch Reef, Milam County, Texas (May 1982) Allen Kent Cregg, B. S. , University of New Orleans Chairman of Advisory.... Depth in kilo- meters (km) and thousands of feet (kft). Two-way time in seconds {sec). (Seismic section courtesy of Mohil Producing Texas and New Mexico Incorporated-United Geo- physical). - NW 1? 5 2? SR I A 1 SA 2 1 'I S ? 10 4? 15'-' 5? Z...

  17. Effect of chronic exposure to low levels of ethylene on cotton during germination and early development

    E-Print Network [OSTI]

    Cowan, Elaine Nan

    1979-01-01T23:59:59.000Z

    for the degree of NASTER OF SCIENCE Auoust 1979 . "iajor Subject: Plant Physiology THE EFFECT OF CHRONIC EXPOSURE TO LON LEVELS OF ETHYLENE ON COTTON DURING GERMINATION AND EARLY DEVELOPMENT A Thesis by ELAINF NAN CONAN Approved as to sty1e and content... and Ryan indicated that endopeptidase reached a peak in activity 10 days after planting. Fumigation with 0. 5 ul/1 ethylene for 5 days prior to harvest inhibited this in- crease in activity. The present study was undertaken to deter- mine...

  18. Sub-structure of laser generated harmonics reveals plasma dynamics of a relativistically oscillating mirror

    SciTech Connect (OSTI)

    Braenzel, J.; Schnrer, M.; Steinke, S.; Priebe, G.; Sandner, W. [Max-Born-Institut fr Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Str. 2A, 12489 Berlin (Germany)] [Max-Born-Institut fr Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Str. 2A, 12489 Berlin (Germany); Andreev, A. [Max-Born-Institut fr Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Str. 2A, 12489 Berlin (Germany) [Max-Born-Institut fr Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Str. 2A, 12489 Berlin (Germany); Vavilov State Optical Institute, Birzhevaya line 4, 199034 St. Petersburg (Russian Federation); Platonov, K. [Vavilov State Optical Institute, Birzhevaya line 4, 199034 St. Petersburg (Russian Federation)] [Vavilov State Optical Institute, Birzhevaya line 4, 199034 St. Petersburg (Russian Federation)

    2013-08-15T23:59:59.000Z

    Theoretical and experimental investigations of the dynamics of a relativistically oscillating plasma slab reveal spectral line splitting in laser driven harmonic spectra, leading to double harmonic series. Both series are well characterized with harmonics arising by two fundamental frequencies. While a relativistic oscillation of the critical density drives the harmonic emission, the splitting is a result of an additional acceleration during the laser pulse duration. In comparison with the oscillatory movement, this acceleration is rather weak and can be described by a plasma shock wave driven by the pressure of light. We introduce particle in cell simulations and an analytical model explaining the harmonic line splitting. The derived analytical formula gives direct access between the splitting in the harmonic spectrum and the acceleration of the plasma surface.

  19. Physics 221B: Solution to HW # 6 1) Born-Oppenheimer for Coupled Harmonic Oscil-

    E-Print Network [OSTI]

    Murayama, Hitoshi

    Physics 221B: Solution to HW # 6 1) Born-Oppenheimer for Coupled Harmonic Oscil- lators model of coupled 1D harmonic oscilla- tors. Since we know how to solve the system exactly we can compare + 1 2 k(X2 - x3 - d)2 . Combining into one harmonic oscillator we get H = p2 3 2m + 1 2 2k x3 - X1 + X

  20. Half-harmonic Kelvin probe force microscopy with transfer function correction

    SciTech Connect (OSTI)

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

    2012-01-01T23:59:59.000Z

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

  1. Ramanujan's Harmonic Number Expansion into Negative Powers of a Triangular Number

    E-Print Network [OSTI]

    Mark B. Villarino

    2007-07-28T23:59:59.000Z

    An algebraic transformation of the DeTemple-Wang half-integer approximation to the harmonic series produces the general formula and error estimate for the Ramanujan expansion for the nth harmonic number into negative powers of the nth triangular number. We also discuss the history of the Ramanujan expansion for the nth harmonic number as well as sharp estimates of its accuracy, with complete proofs, and we compare it with other approximative formulas.

  2. Harmonic oscillator in a background magnetic field in noncommutative quantum phase-space

    E-Print Network [OSTI]

    Joseph Ben Geloun; Sunandan Gangopadhyay; Frederik G Scholtz

    2009-01-22T23:59:59.000Z

    We solve explicitly the two-dimensional harmonic oscillator and the harmonic oscillator in a background magnetic field in noncommutative phase-space without making use of any type of representation. A key observation that we make is that for a specific choice of the noncommutative parameters, the time reversal symmetry of the systems get restored since the energy spectrum becomes degenerate. This is in contrast to the noncommutative configuration space where the time reversal symmetry of the harmonic oscillator is always broken.

  3. Dispersion-free monochromatization method for selecting a single-order harmonic beam

    E-Print Network [OSTI]

    Takahashi, Eiji J; Ichimaru, Satoshi; Midorikawa, Katsumi

    2015-01-01T23:59:59.000Z

    We propose a method to monochromatize multiple orders of high harmonics by using a proper designed multilayer mirror. Multilayer mirrors designed by our concept realize the perfect extraction of a single-order harmonic from multiple-order harmonic beam, and exhibit broadband tenability and high reflectivity in the soft-x-ray region. Furthermore, the proposed monochromatization method can preserve the femtosecond to attosecond pulse duration for the reflected beam. This device is very useful for ultrafast soft x-ray experiments that require high-order harmonic beams, such as femtosecond/attosecond, time-resolved, pump-probe spectroscopy.

  4. N = 4 supersymmetric mechanics: Harmonic superspace as a universal tool of model-building

    SciTech Connect (OSTI)

    Ivanov, E. A., E-mail: eivanov@theor.jinr.ru [Joint Institute for Nuclear Research, Bogoliubov Laboratory of Theoretical Physics (Russian Federation)

    2013-08-15T23:59:59.000Z

    We overview applications of the harmonic superspace approach in models of N = 4supersymmetric mechanics, with emphasis on some recent results.

  5. Numerical studies of third-harmonic generation in laser filament in air perturbed by plasma spot

    SciTech Connect (OSTI)

    Feng Liubin [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190 (China); Institute of Atomic and Molecular Physics and Department of Physics, Sichuan University, Chengdu 610065 (China); Lu Xin; Liu Xiaolong; Li Yutong; Chen Liming; Ma Jinglong; Dong Quanli; Wang Weimin [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190 (China); Xi Tingting [College of Physical Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049 (China); Sheng Zhengming; Zhang Jie [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190 (China); Key Laboratory for Laser Plasmas of the Ministry of Education of China and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); He Duanwei [Institute of Atomic and Molecular Physics and Department of Physics, Sichuan University, Chengdu 610065 (China)

    2012-07-15T23:59:59.000Z

    Third-harmonic emission from laser filament intercepted by plasma spot is studied by numerical simulations. Significant enhancement of the third-harmonic generation is obtained due to the disturbance of the additional plasma. The contribution of the pure plasma effect and the possible plasma-enhanced third-order susceptibility on the third-harmonic generation enhancement are compared. It is shown that the plasma induced cancellation of destructive interference [Y. Liu et al., Opt. Commun. 284, 4706 (2011)] of two-colored filament is the dominant mechanism of the enhancement of third-harmonic generation.

  6. Income variations due to yields on small, medium, and large Southern High Plains dryland cotton farms, owner operated and tenant operated

    E-Print Network [OSTI]

    Martin, James Rod

    1957-01-01T23:59:59.000Z

    ? cou?piete eechsnisation of cotton harvesting is fax' frau a reality ~ Therefore? at least, a portion of the cotton on each faxs? is nox~ harvested by hand On tenant operated fares ~oerth of the cotton lint, and seed is pudd ss rent? with ~ c... that ths household uni't maT offer rosouross Ln 'the form of labor to tM farm unit. ~ ~i states of the life ogcQsi assuugklon is node that the operators are ~re in the stages ~ oapltal snd labor are oocMaed wi a fair+ fa~ LBQfNI ~ Ify llocfsvarp thoro...

  7. Analysis and Design of New Harmonic Mitigation Approaches

    E-Print Network [OSTI]

    Aeloiza Matus, Eddy 1972-

    2012-11-01T23:59:59.000Z

    is proposed to reduce the HF circulating current and a zero-sequence control loop to mitigate the low frequency circulating current is also proposed [56]-[58]. 5 Power Quality Standards 1.2. IEEE 519-1981 [67] 1.2.1 In 1981... to determine whether or not the new converters were going to be a problem. It was impractical and not economical to mitigate the harmonics for each non-linear load. Therefore, the IEEE 519-1981 was designed to help these users with the application...

  8. A non-conforming 3D spherical harmonic transport solver

    SciTech Connect (OSTI)

    Van Criekingen, S. [Commissariat a l'Energie Atomique CEA-Saclay, DEN/DM2S/SERMA/LENR Bat 470, 91191 Gif-sur-Yvette, Cedex (France)

    2006-07-01T23:59:59.000Z

    A new 3D transport solver for the time-independent Boltzmann transport equation has been developed. This solver is based on the second-order even-parity form of the transport equation. The angular discretization is performed through the expansion of the angular neutron flux in spherical harmonics (PN method). The novelty of this solver is the use of non-conforming finite elements for the spatial discretization. Such elements lead to a discontinuous flux approximation. This interface continuity requirement relaxation property is shared with mixed-dual formulations such as the ones based on Raviart-Thomas finite elements. Encouraging numerical results are presented. (authors)

  9. Quantum Energy Teleportation with a Linear Harmonic Chain

    E-Print Network [OSTI]

    Yasusada Nambu; Masahiro Hotta

    2010-10-14T23:59:59.000Z

    A protocol of quantum energy teleportation is proposed for a one-dimensional harmonic chain. A coherent-state POVM measurement is performed to coupled oscillators of the chain in the ground state accompanied by energy infusion to the system. This measurement consumes a part of ground state entanglement. Depending on the measurement result, a displacement operation is performed on a distant oscillator accompanied by energy extraction from the zero-point fluctuation of the oscillator. We find that the amount of consumed entanglement is bounded from below by a positive value that is proportional to the amount of teleported energy.

  10. The effect of singular potentials on the harmonic oscillator

    SciTech Connect (OSTI)

    Filgueiras, C. [Departamento de Fisica, Universidade Federal da Paraiba, Caixa Postal 5008, 58051-900 Joao Pessoa, PB (Brazil); Silva, E.O. [International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitario Lagoa Nova, 59.072-970 Natal, RN (Brazil); Oliveira, W. [Departamento de Fisica, Universidade Federal de Juiz de Fora, 36.036-330 Juiz de Fora, MG (Brazil); Moraes, F., E-mail: moraes@fisica.ufpb.b [Departamento de Fisica, Universidade Federal da Paraiba, Caixa Postal 5008, 58051-900 Joao Pessoa, PB (Brazil)

    2010-11-15T23:59:59.000Z

    We address the problem of a quantum particle moving under interactions presenting singularities. The self-adjoint extension approach is used to guarantee that the Hamiltonian is self-adjoint and to fix the choice of boundary conditions. We specifically look at the harmonic oscillator added of either a {delta}-function potential or a Coulomb potential (which is singular at the origin). The results are applied to Landau levels in the presence of a topological defect, the Calogero model and to the quantum motion on the noncommutative plane.

  11. Second-harmonic generation in transition-metal-organic compounds

    SciTech Connect (OSTI)

    Frazier, C.C.; Harvey, M.A.; Cockerham, M.P.; Hand, H.M.; Chauchard, E.A.; Lee, C.H.

    1986-10-23T23:59:59.000Z

    The second-harmonic generation efficiencies of over 60 transition-metal-organic compounds in powder form were measured, using 1.06 ..mu..m light from a Nd:YAG laser. Most of the studied compounds were either group VI metal carbonyl arene, pyridyl, or chiral phosphine complexes. Four the complexes doubled the laser fundamental as well as or better than ammonium dihydrogen phosphate (ADP). The study shows that the same molecular features (e.g., conjugation and low-lying spectroscopic charge transfer) that contribute to second-order optical nonlinearity in organic compounds also enhance second-order effects in transition-metal-organic compounds.

  12. Harmonic initial-boundary evolution in general relativity

    SciTech Connect (OSTI)

    Babiuc, Maria C. [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Szilagyi, Bela [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, 14476 Golm (Germany); Winicour, Jeffrey [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, 14476 Golm (Germany)

    2006-03-15T23:59:59.000Z

    Computational techniques which establish the stability of an evolution-boundary algorithm for a model wave equation with shift are incorporated into a well-posed version of the initial-boundary value problem for gravitational theory in harmonic coordinates. The resulting algorithm is implemented as a 3-dimensional numerical code which we demonstrate to provide stable, convergent Cauchy evolution in gauge wave and shifted gauge wave testbeds. Code performance is compared for Dirichlet, Neumann, and Sommerfeld boundary conditions and for boundary conditions which explicitly incorporate constraint preservation. The results are used to assess strategies for obtaining physically realistic boundary data by means of Cauchy-characteristic matching.

  13. Quantum Energy Teleportation with a Linear Harmonic Chain

    E-Print Network [OSTI]

    Nambu, Yasusada

    2010-01-01T23:59:59.000Z

    A protocol of quantum energy teleportation is proposed for a one-dimensional harmonic chain. A coherent-state POVM measurement is performed to coupled oscillators of the chain in the ground state accompanied by energy infusion to the system. This measurement consumes a part of ground state entanglement. Depending on the measurement result, a displacement operation is performed on a distant oscillator accompanied by energy extraction from the zero-point fluctuation of the oscillator. We find that the amount of consumed entanglement is bounded from below by a positive value that is proportional to the amount of teleported energy.

  14. Harmonic Initial-Boundary Evolution in General Relativity

    E-Print Network [OSTI]

    Maria C. Babiuc; Bela Szilagyi; Jeffrey Winicour

    2006-03-14T23:59:59.000Z

    Computational techniques which establish the stability of an evolution-boundary algorithm for a model wave equation with shift are incorporated into a well-posed version of the initial-boundary value problem for gravitational theory in harmonic coordinates. The resulting algorithm is implemented as a 3-dimensional numerical code which we demonstrate to provide stable, convergent Cauchy evolution in gauge wave and shifted gauge wave testbeds. Code performance is compared for Dirichlet, Neumann and Sommerfeld boundary conditions and for boundary conditions which explicitly incorporate constraint preservation. The results are used to assess strategies for obtaining physically realistic boundary data by means of Cauchy-characteristic matching.

  15. On the harmonic oscillator on the Lobachevsky plane

    E-Print Network [OSTI]

    P. Stovicek; M. Tusek

    2007-09-24T23:59:59.000Z

    We introduce the harmonic oscillator on the Lobachevsky plane with the aid of the potential $V(r)=(a^2\\omega^2/4)sinh(r/a)^2$ where $a$ is the curvature radius and $r$ is the geodesic distance from a fixed center. Thus the potential is rotationally symmetric and unbounded likewise as in the Euclidean case. The eigenvalue equation leads to the differential equation of spheroidal functions. We provide a basic numerical analysis of eigenvalues and eigenfunctions in the case when the value of the angular momentum, $m$, equals 0.

  16. Harmonic coordinates in the string and membrane equations

    E-Print Network [OSTI]

    Chun-Lei He; Shou-Jun Huang

    2010-04-16T23:59:59.000Z

    In this note, we first show that the solutions to Cauchy problems for two versions of relativistic string and membrane equations are diffeomorphic. Then we investigate the coordinates transformation presented in Ref. [9] (see (2.20) in Ref. [9]) which plays an important role in the study on the dynamics of the motion of string in Minkowski space. This kind of transformed coordinates are harmonic coordinates, and the nonlinear relativistic string equations can be straightforwardly simplified into linear wave equations under this transformation.

  17. Generalized energy equipartition in harmonic oscillators driven by active baths

    E-Print Network [OSTI]

    Claudio Maggi; Matteo Paoluzzi; Nicola Pellicciotta; Alessia Lepore; Luca Angelani; Roberto Di Leonardo

    2014-11-06T23:59:59.000Z

    We study experimentally and numerically the dynamics of colloidal beads confined by a harmonic potential in a bath of swimming E. coli bacteria. The resulting dynamics is well approximated by a Langevin equation for an overdamped oscillator driven by the combination of a white thermal noise and an exponentially correlated active noise. This scenario leads to a simple generalization of the equipartition theorem resulting in the coexistence of two different effective temperatures that govern dynamics along the flat and the curved directions in the potential landscape.

  18. Temperature-insensitive phase-matched optical harmonic conversion crystal

    DOE Patents [OSTI]

    Barker, C.E.; Eimerl, D.; Velsko, S.P.; Roberts, D.

    1993-11-23T23:59:59.000Z

    Temperature-insensitive, phase-matched harmonic frequency conversion of laser light at a preferred wavelength of 1.064 microns can be achieved by use of a crystal of deuterated l-arginine phosphate. The crystal is cut and oriented so that the laser light propagates inside the crystal along one of several required directions, which correspond to a temperature-insensitive, phase-matching locus. The method of measuring and calculating the temperature-insensitive, phase-matching angles can be extended to other fundamental wavelengths and other crystal compositions. 12 figures.

  19. Harmonized Emissions Analysis Tool (HEAT) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup | Open Energy Information Hanergy HoldingsHansatronicHarmonized

  20. Assessing the Impacts of Climate Change on Cotton Production in the Texas High Plains and Rolling Plains

    E-Print Network [OSTI]

    Modala, Naga Raghuveer

    2014-12-11T23:59:59.000Z

    -Cotton Cropping System Model (CSM) within the Decision Support System for Agrotechnology Transfer (DSSAT). The future (2041-2070) climate data generated by three Regional Climate Models (RCMs), namely RCM3-GFDL, RCM3-CGCM3 and CRCM-CCSM was obtained from the North...

  1. Assessing the Impacts of Climate Change on Cotton Production in the Texas High Plains and Rolling Plains

    E-Print Network [OSTI]

    Modala, Naga Raghuveer

    2014-12-11T23:59:59.000Z

    -Cotton Cropping System Model (CSM) within the Decision Support System for Agrotechnology Transfer (DSSAT). The future (2041-2070) climate data generated by three Regional Climate Models (RCMs), namely RCM3-GFDL, RCM3-CGCM3 and CRCM-CCSM was obtained from the North...

  2. Real-time electron density measurements from Cotton-Mouton effect in JET machine

    SciTech Connect (OSTI)

    Brombin, M. [Consorzio RFX, Associazione EURATOM-ENEA, Corso Stati Uniti 4, 35127 Padova (Italy); Electrical Engineering Department, Padova University, via Gradenigo 6-A, 35131 Padova (Italy); Boboc, A.; Zabeo, L. [EURATOM/UKAEA Fusion Association, Culham Science Centre, OX14 3DB Abingdon (United Kingdom); Murari, A. [Consorzio RFX, Associazione EURATOM-ENEA, Corso Stati Uniti 4, 35127 Padova (Italy)

    2008-10-15T23:59:59.000Z

    Real-time density profile measurements are essential for advanced fusion tokamak operation and interferometry is a proven method for this task. Nevertheless, as a consequence of edge localized modes, pellet injections, fast density increases, or disruptions, the interferometer is subject to fringe jumps, which produce loss of the signal preventing reliable use of the measured density in a real-time feedback controller. An alternative method to measure the density is polarimetry based on the Cotton-Mouton effect, which is proportional to the line-integrated electron density. A new analysis approach has been implemented and tested to verify the reliability of the Cotton-Mouton measurements for a wide range of plasma parameters and to compare the density evaluated from polarimetry with that from interferometry. The density measurements based on polarimetry are going to be integrated in the real-time control system of JET since the difference with the interferometry is within one fringe for more than 90% of the cases.

  3. Characterization of Second Harmonic Afterburner Radiation at the LCLS

    SciTech Connect (OSTI)

    Nuhn, Heinz-Dieter

    2010-09-14T23:59:59.000Z

    During commissioning of the Linac Coherent Light Source (LCLS) x-ray Free Electron Laser (FEL) at the SLAC National Accelerator Laboratory it was shown that saturation lengths much shorter than the installed length of the undulator line can routinely be achieved. This frees undulator segments that can be used to provide enhanced spectral properties and at the same time, test the concept of FEL Afterburners. In December 2009 a project was initiated to convert undulator segments at the down-beam end of the undulator line into Second Harmonic Afterburners (SHAB) to enhance LCLS radiation levels in the 10-20 keV energy range. This is being accomplished by replacement of gap-shims increasing the fixed gaps from 6.8 mm to 9.9 mm, which reduces their K values from 3.50 to 2.25 and makes the segments resonant at the second harmonic of the upstream unmodified undulators. This paper reports experimental results of the commissioning of the SHAB extension to LCLS.

  4. Wide-cross whole-genome radiation hybrid (WWRH) mapping and identification of cold-responsive genes using oligo-gene microarray analysis in cotton

    E-Print Network [OSTI]

    Gao, Wenxiang

    2005-02-17T23:59:59.000Z

    that the WWRH mapping method can be used to map the cotton genome, and that this method complements traditional linkage mapping approaches. The second part of this research focused on the identification of cold-responsive genes using spotted oligo...

  5. A study of a lime-free calcium arsenate and lime-free calcium arsenate mixed with organic insecticides for cotton insect control

    E-Print Network [OSTI]

    Roussel, John Severin

    1950-01-01T23:59:59.000Z

    of the cotton aphid. 30 o ?s e* mi SS3 t=>o O fi w ow o Ix) s SM faO MOH Xoli W CtJofa ow w ? !=> o ei M 3...

  6. Effects of Drought-Stress on Cotton (Gossypium hirsutum L.) and Host-Plant Resistance to Western Flower Thrips (Frankliniella Occidentalis Pergande)

    E-Print Network [OSTI]

    Fiene, Justin G. 1983-

    2012-11-05T23:59:59.000Z

    Herbivory by Western Flower Thrips (Frankliniella occidentalis Pergande) (WFT) and drought-stress due to limited water availability are currently two major factors that can severely impact cotton (Gossypium hirsutum L.) production...

  7. Increased surface plasmon resonance sensitivity with the use of double Fourier harmonic gratings

    E-Print Network [OSTI]

    Boyer, Edmond

    Increased surface plasmon resonance sensitivity with the use of double Fourier harmonic gratings in the formalism of poles and zeros of the scattering matrix. Surface plasmon resonance is used to increase that a direct coupling between counter propagating surface plasmons using double-harmonic Fourier gratings leads

  8. Power line harmonic radiation observed by satellite: Properties and propagation through the ionosphere

    E-Print Network [OSTI]

    Santolik, Ondrej

    Power line harmonic radiation observed by satellite: Properties and propagation through of power line harmonic radiation events observed by the low-altitude DEMETER spacecraft. Altogether, 88 with the largest intensities often occur off exact multiples of base power system frequency. This can be explained

  9. High-order harmonic transient grating spectroscopy of SF6 molecular vibrations Amelie Ferre1

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    High-order harmonic transient grating spectroscopy of SF6 molecular vibrations Amelie Ferre1. Here we use this technique to investigate the high-order harmonic genera- tion from SF6 molecules emission generated between 14 to 26 eV is mainly sensitive to two among the three active Raman modes in SF6

  10. Hydrogen Generation from Water Disassociation Using Small Currents and Harmonics Trien N. Nguyen1

    E-Print Network [OSTI]

    Zhou, Yaoqi

    Hydrogen Generation from Water Disassociation Using Small Currents and Harmonics Trien N. Nguyen1 1 Department of Physics, Purdue School of Science Hydrogen can be produced cheaply and efficiently from water sources using a combination of harmonics and small currents. Hydrogen is a clean and virtually

  11. A Multipole Based Treecode Using Spherical Harmonics for Potentials of the Form r-

    E-Print Network [OSTI]

    Sarin, Vivek

    A Multipole Based Treecode Using Spherical Harmonics for Potentials of the Form r- Kasthuri spherical harmonics to compute multipole coefficients that are used to evaluate these potentials. The key of the multipole expansion theorem used in the classical fast multipole algorithm [2]. This theorem is used

  12. Efficient polarization gating of high-order harmonic generation by polarization-shaped ultrashort pulses

    E-Print Network [OSTI]

    Silberberg, Yaron

    Polarization gating of high-order harmonic generation takes advantage of the significant reduction of har for generation of polarization gated pulses using wave-plate combinations is inefficient, and propose photon energy radiation from the harmonic spectrum. Need- less to say, the generation of near single

  13. Edge ion heating by launched high harmonic fast waves in the National Spherical Torus Experiment

    E-Print Network [OSTI]

    Biewer, Theodore

    Edge ion heating by launched high harmonic fast waves in the National Spherical Torus Experiment T al., Fusion Technology 30, 1337 (1996)] measures the velocity distribution of ions in the plasma edge power High Harmonic Fast Wave (HHFW) rf heating in helium plasmas, with the poloidal ion temperature

  14. Injection of harmonics generated in gas in a free-electron laser providing intense and

    E-Print Network [OSTI]

    Loss, Daniel

    LETTERS Injection of harmonics generated in gas in a free-electron laser providing intense lasers promise to extend this down to femtosecond timescales. The process by which free-electron lasers of the free-electron laser saturation length, and the generation of nonlinear harmonics13 at 54 nm and 32 nm

  15. Two-beam high-order harmonics from solids: Coupling mechanisms

    SciTech Connect (OSTI)

    Tarasevitch, A.; Wieczorek, J.; Kohn, R.; Bovensiepen, U.; Linde, D. von der [Fakultaet fuer Physik, Universitaet Duisburg-Essen, Lotharstr. 1, 47048 Duisburg (Germany)

    2010-11-15T23:59:59.000Z

    The polarization of the two beam (driver-probe) high-order harmonic generation from solids is measured. The experiments, together with computer simulations, allow us to distinguish two different coupling mechanisms of the driver and the probe, resulting in different harmonic efficiencies and spectral slopes. We find that in the nonrelativistic regime the coupling is mostly due to the nonlinear plasma density modulation.

  16. Influence of result demonstrations on the adoption of improved practices in cotton production in a six-county area in Texas

    E-Print Network [OSTI]

    Shamsuzzoha, A. N. M

    1967-01-01T23:59:59.000Z

    INFLUENCE OF RESULT DEMONSTRATIONS ON THE ADOPTION OF IMPROVED PRACTICES IN COTTON PRODUCTION IN A SIX ? COUNTY AREA IN TEXAS A Thesis by A. N. M. SHAMSUZZOHA Submitted to the Graduate College of the Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1967 Major Subject: Agricultural Education INFLUENCE OF RESULT DEMONSTRATIONS ON THE ADOPTION OF IMPROVED PRACTICES IN COTTON PRODUCTION IN A SIX-COUNTY AREA IN TEXAS A Thesis...

  17. High-order harmonic generation in the presence of a static electric field

    SciTech Connect (OSTI)

    Odzak, S. [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina); Milosevic, D.B. [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina); Max-Born-Institut, Max-Born-Strasse 2a, 12489 Berlin (Germany)

    2005-09-15T23:59:59.000Z

    We consider high-order harmonic generation by a linearly polarized laser field and a parallel static electric field. We first develop a modified saddle-point method which enables a quantitative analysis of the harmonic spectra even in the presence of Coulomb singularities. We introduce a classification of the saddle-point solutions and show that, in the presence of a static electric field which breaks the inversion symmetry, an additional classification number has to be introduced and that the usual saddle-point approximation and the uniform approximation in the case of the coalescing saddle points have to be modified. The theory developed offers a simple and accurate explanation of the static-field-induced multiplateau structure of the harmonic spectra. The longer quantum orbits are responsible for a long extension of the harmonic plateau, while the larger initial electron velocities are the reason of lower harmonic emission rates.

  18. Relativistic second harmonic generation from an S-polarized laser in over-dense plasma

    SciTech Connect (OSTI)

    Adusumilli, K.; Goyal, D.; Tripathi, V. K. [Department of Physics, Indian Institute of Technology-Delhi, Delhi, New Delhi 110016 (India)

    2011-08-15T23:59:59.000Z

    A relativistic S-polarized short pulse laser impinged obliquely on an overdense plasma thin foil is shown to produce very significant second harmonic in the direction of specular reflection. The second harmonic is P-polarized and is driven by the second harmonic ponderomotive force on electrons in the skin layer. The treatment incorporates the electron density modification by the static ponderomotive force and mass modification due to relativistic effects. The second harmonic reflected amplitude is greatest for an optimum value of the angle of incidence. The conversion efficiency of the second harmonic is greater for higher values of incident laser amplitude and lower values of electron density in the foil. The equivalence between the total ponderomotive force and the radiation pressure force is also demonstrated.

  19. Performance study of a soft X-ray harmonic generation FEL seeded with an EUV laser pulse

    E-Print Network [OSTI]

    Gullans, M.; Wurtele, J.S.; Penn, G.; Zholents, A.A.

    2007-01-01T23:59:59.000Z

    X-ray Harmonic Generation FEL Seeded with an EUV Laser PulseX-ray harmonic generation FEL seeded with an EUV laser pulseof a free electron laser (FEL) using a low-power extreme

  20. Polarization-Modulated Second Harmonic Generation Microscopy in Collagen

    SciTech Connect (OSTI)

    Stoller, P C

    2002-09-30T23:59:59.000Z

    Collagen is a key structural protein in the body; several pathological conditions lead to changes in collagen. Among imaging modalities that can be used in vivo, second harmonic generation (SHG) microscopy has a key advantage: it provides {approx}1 {micro}m resolution information about collagen structure as a function of depth. A new technique--polarization-modulated SHG--is presented: it permits simultaneous measurement of collagen orientation, of a lower bound on the magnitude of the second order nonlinear susceptibility tensor, and of the ratio of the two independent elements in this tensor. It is applied to characterizing SHG in collagen and to determining effects of biologically relevant changes in collagen structure. The magnitude of the second harmonic signal in two dimensional images varies with position even in structurally homogeneous tissue; this phenomenon is due to interference between second harmonic light generated by neighboring fibrils, which are randomly oriented parallel or anti-parallel to each other. Studies in which focal spot size was varied indicated that regions where fibrils are co-oriented are less than {approx}1.5 {micro}m in diameter. A quartz reference was used to determine the spot size as well as a lower limit (d{sub xxx} > 0.3 pm/V) for the magnitude of the second order nonlinear susceptibility. The ratio of the two independent tensor elements ranged between d{sub XYY}/d{sub XXX} = 0.60 and 0.75. SHG magnitude alone was not useful for identifying structural anomalies in collagenous tissue. Instead, changes in the polarization dependence of SHG were used to analyze biologically relevant perturbations in collagen structure. Changes in polarization dependence were observed in dehydrated samples, but not in highly crosslinked samples, despite significant alterations in packing structure. Complete thermal denaturation and collagenase digestion produced samples with no detectable SHG signal. Collagen orientation was measured in thin samples of several different tissues in transmission mode as well as at different depths (up to 200 {micro}m) in thick samples in reflection mode; birefringence had no effect on the measurement. These studies showed that SHG microscopy was capable of detecting pathophysiological changes in collagen structure, suggesting that this technique has potential clinical applications.