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Articles 186931 - 186960 of 250098
Full-Text Articles in Life Sciences
Groundwater Study Of The Tambellup Townsite, Ben Whitfield
Groundwater Study Of The Tambellup Townsite, Ben Whitfield
Resource management technical reports
A groundwater study of the townsite of Tambellup. It aimed to accelerate the implementation of effective salinity management options. The study consisted of drilling investation and installation of a piezometer network, a pumping test, groundwater flow modelling and a flood risk analysis.
Monitoring Subsurface Drainage Flow At Remote Locations, Stephen R. Workman, Stephen F. Higgins, Scott A. Shearer
Monitoring Subsurface Drainage Flow At Remote Locations, Stephen R. Workman, Stephen F. Higgins, Scott A. Shearer
Biosystems and Agricultural Engineering Faculty Publications
Laboratory evaluations and field results are presented for a slotted weir used to measure discharge from subsurface drains. The head–discharge curve for the vertical slot is a simple power function with an exponent of 1.5. There was excellent agreement (r2 > 0.99 and 1:1 slope) between predicted and observed discharge in laboratory testing of 12 test weirs representing five slot widths. The primary advantages of the vertical slot weir are its simplicity, ease of maintenance, and ability to measure small flow rates. Disadvantages include a tendency for the slot to close a small amount over time as a result of …
Forage News [2001-11], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News [2001-11], Department Of Plant And Soil Sciences, University Of Kentucky
Forage News
- Grazing Conference November 29th
- Alfalfa Yield vs. Stand Age
- Feed & Forage Composition
- Upcoming Events
Sp592-Site Selection Factors For New Poultry Facilities, The University Of Tennessee Agricultural Extension Service
Sp592-Site Selection Factors For New Poultry Facilities, The University Of Tennessee Agricultural Extension Service
Animals/Livestock
Proper siting of new poultry facilities is extremely important. Problems can result if facilities are built in unfavorable locations. The best time to handle potential problems is BEFORE they occur. Proper planning will help prevent environmental problems from occurring, and will save time, money and headaches in the long run.
Pb1215-Disease Control In The Home Vegetable Garden, The University Of Tennessee Agricultural Extension Service
Pb1215-Disease Control In The Home Vegetable Garden, The University Of Tennessee Agricultural Extension Service
Home Garden, Lawn, and Landscape
Control of vegetable pests (diseases, insects, weeds) involves a total production program that includes both chemical and non-chemical means of pest control. The establishment of a healthy, vigorous crop is central to a successful pest control program. Production practices such as maintaining proper soil pH and fertility are helpful in reducing potential losses from all types of pests.
This publication deals mainly with chemical and biological pest control, because these recommendations change more often than do cultural practices. Cultural practices of pest control are extremely important and are addressed throughout the publication.
Re-Evaluating Nadph-Diaphorase Histochemistry As An Indicator Of Nitric Oxide Synthase: An Examination Of The Olfactory System Of Coho Salmon (Oncorhynchus Kisutch), Sean C. Lema, Gabrielle A. Nevitt
Re-Evaluating Nadph-Diaphorase Histochemistry As An Indicator Of Nitric Oxide Synthase: An Examination Of The Olfactory System Of Coho Salmon (Oncorhynchus Kisutch), Sean C. Lema, Gabrielle A. Nevitt
Biological Sciences
The NADPH-diaphorase (NADPH-d) histochemical technique is commonly used to localize the nitric oxide (NO)-producing enzyme NO synthase (NOS) in neural tissues. In the olfactory tissues of vertebrates, however, NADPH-d staining can be present without the detection of NOS by other methods. We used pharmacological controls to determine whether NADPH-d staining was indicative of NOS in olfactory tissues from coho salmon (Oncorhynchus kisutch). We also compared NADPH-d staining with immunoreactivity to NOS. NADPH-d staining localized to the olfactory epithelium and to the glomerular layer of the olfactory bulb. Two NOS inhibitors, L-N-nitroarginine and L-N-methyl-L-arginine, failed …
Groundwater Study Of The Perenjori Townsite, Russell John Speed
Groundwater Study Of The Perenjori Townsite, Russell John Speed
Resource management technical reports
A groundwater study of the townsite of Perenjori. It aimed to accelerate the implementation of effective salinity management options. The study consisted of drilling investation and installation of a piezometer network, a pumping test, groundwater flow modelling and a flood risk analysis.
Differential Expression Of Cadherin-2 And Cadherin-4 In The Developing And Adult Zebrafish Visual System, Qin Liu, S. G. Babb, Z. M. Novince, A. L. Doedens, J. Marrs, P. A. Raymond
Differential Expression Of Cadherin-2 And Cadherin-4 In The Developing And Adult Zebrafish Visual System, Qin Liu, S. G. Babb, Z. M. Novince, A. L. Doedens, J. Marrs, P. A. Raymond
Biology Faculty Research
Cadherins are homophilic cell adhesion molecules that control development of a variety of tissues and maintenance of adult structures. Although cadherins have been implicated in the development of the brain, including the visual system, in several vertebrate species, little is known of their role in zebrafish. In this study, we examined distribution of cadherin-2 (Cdh2, N-cadherin) in the visual system of developing and adult zebrafish using both immunocytochemical and in situ hybridization methods, and we compared Cdh2 distribution to that of the previously reported and closely related cadherin-4 (Cdh4, R-cadherin). As in other vertebrates, in zebrafish embryos Cdh2 was widely …
Interactions Between Shoal Size And Conformity In Guppy Social Foraging, Rachel L. Day, Tom Macdonald, Culum Brown, Kevin N. Laland, Simon M. Reader
Interactions Between Shoal Size And Conformity In Guppy Social Foraging, Rachel L. Day, Tom Macdonald, Culum Brown, Kevin N. Laland, Simon M. Reader
Sentience Collection
Previous experimental studies have established that shoaling fish forage more effectively in large than small groups. We investigated how shoal size affects the foraging efficiency of laboratory populations of the guppy, Poecilia reticulata, exposed to different foraging tasks. Experiment 1 confirmed the prediction that in open water the first fish and focal fish of larger shoals locate food faster than in smaller shoals. However, a second experiment, in which shoals of fish were required to swim through a hole in an opaque partition to locate food, found the reverse pattern: smaller shoals learned to complete the task faster than large …
Determinants Of Effective Population Size For Loci With Different Modes Of Inheritance, Jay F. Storz, U. Ramakrishnan, S. C. Alberts
Determinants Of Effective Population Size For Loci With Different Modes Of Inheritance, Jay F. Storz, U. Ramakrishnan, S. C. Alberts
Jay F. Storz Publications
Here we report an assessment of the determinants of effective population size (Ne) in species with overlapping generations. Specifically, we used a stochastic demographic model to investigate the influence of different life-history variables on Ne/N (where N = population census number) and the influence of sex differences in life-history variables on Ne for loci with dif¬ferent modes of inheritance. We applied an individual-based modeling approach to two datasets: one from a natural popu¬lation of savannah baboons (Papio cynocephalus) in the Amboseli basin of southern Kenya and one from a human tribal …
The Effect Of Thermal Stress On The Mating Behavior Of Three Drosophila Species, Zachary J. Patton, Robert A. Krebs
The Effect Of Thermal Stress On The Mating Behavior Of Three Drosophila Species, Zachary J. Patton, Robert A. Krebs
Biological, Geological, and Environmental Faculty Publications
Selection may act on the weakest link in fitness to change how a species adapts to an environmental stress. For many species, this limitation may be reproduction. After adult Drosophila melanogaster, Drosophila simulans, and Drosophila mojavensis males were exposed to varying levels of thermal stress well below those that endanger life, courtship and mating frequency declined. The regression coefficients of both courtship and mating success did not differ significantly between D. melanogaster and D. simulans males. In contrast, significant differences were present between the two cosmopolitan species and D. mojavensis. Courtship frequency decreased at a much slower rate in D. …
La Homogeneizacion Paisajistica De Los Valles De Hortmoier Y Sant Aniol (Alta Garrotxa, Girona): Caracterizacion Y Evaluacion De Los Cambios Ambientales En El Periodo 1957-1979-1996 Con Patch Analyst, Josep Vila I Subiros, Joan M. Welch
La Homogeneizacion Paisajistica De Los Valles De Hortmoier Y Sant Aniol (Alta Garrotxa, Girona): Caracterizacion Y Evaluacion De Los Cambios Ambientales En El Periodo 1957-1979-1996 Con Patch Analyst, Josep Vila I Subiros, Joan M. Welch
Geography & Planning Faculty Publications
No abstract provided.
Kentucky Warbler (Vol. 77, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 77, No. 4), Kentucky Library Research Collections
Kentucky Warbler
No abstract provided.
A Disengaging Metal Spike And Putting Green Quality, C. Jayne Brahler, Joe Macgowan, Marjorie Kapper, Katie Murphy, Mike Pequignot, Cristi Seidelson, Vicki Denlinger, Carrie Crites
A Disengaging Metal Spike And Putting Green Quality, C. Jayne Brahler, Joe Macgowan, Marjorie Kapper, Katie Murphy, Mike Pequignot, Cristi Seidelson, Vicki Denlinger, Carrie Crites
Health and Sport Science Faculty Publications
Over the past few years, some disadvantages to alternative spikes have surfaced. The amount of damage to putting surfaces is in question, but the damage may not be noticed immediately, as it is with the conventional 8-mm length metal spike. The present study questions the effect of alternative spikes on putting green quality and ball roll.
Area-Level Characteristics And Smoking In Women, Marilyn Tseng, Karin Yeatts, Robert Millikan, Beth Newman
Area-Level Characteristics And Smoking In Women, Marilyn Tseng, Karin Yeatts, Robert Millikan, Beth Newman
Kinesiology and Public Health
Objectives. This study examined whether area-level characteristics are associated with individual smoking behavior among women.
Methods. Analyses included 648 women enrolled as control patients in the Carolina Breast Cancer Study (1993–1996). Smoking and covariate information was obtained from interviews. Area-level characteristics included census block-group education level, poverty, unemployment, car–home ownership, crowding, and, for 431 women, city-level crime rates.
Results. In multivariate logistic regression models, no area characteristics were clearly associated with a history of smoking. Among those who had ever smoked, continued smoking was associated with living in low-education areas (odds ratio [OR] = 1.7, 95% confidence interval [CI] = …
"Selective" Pesticides: Are They Less Hazardous To The Environment?, John D. Stark, John Banks
"Selective" Pesticides: Are They Less Hazardous To The Environment?, John D. Stark, John Banks
SIAS Faculty Publications
No abstract provided.
High Frequency Of Extra-Pair Paternity In Eastern Kingbirds, Michael T. Murphy, Diane L. Rowe, Robert C. Fleischer, Paul G. Wolf
High Frequency Of Extra-Pair Paternity In Eastern Kingbirds, Michael T. Murphy, Diane L. Rowe, Robert C. Fleischer, Paul G. Wolf
Biology Faculty Publications
Genetic parentage in the socially monogamous and territorial Eastern Kingbird( Tyrannust tyrannus) was examined in a central New York population by multilocus DNA fingerprinting. Extra-pair young were identified in 60% (12 of 20) of nests. Of the 64 nestlings profiled, 42% were sired by extra-pair males, but no cases of conspecific brood parasitism were detected. These results are markedly different from a previous electrophoretic study of the same species in a Michigan population, which reported 39% of nestlings were unrelated to one (typically the mother, quasiparasitismo)r both (conspecificb roodp arasitism) of the putative parents. In the New York population, extra-pairp …
The Nebline, November 2001
NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County
Contents:
Celebrate Family Connections!
Take Time to be Thankful
Hints for Fruit Storage
Harvesting Popcorn
Winter Care For Strawberry Plants
Aloes, Easy and Fun to Grow
Horticulture information center
Pine Cones For Decoration
Combing: a Safe, Non-Toxic Method of Lice Control
Celebrate America Recycles Day
Head Lice Resources Available from the Extension Office
Asthma and Indoor Air Contaminants
Extension Record-Keeping Workshop Receives Award
Year End Financial Analysis and Planning
Beware of Entrapment in Moving Grain
Winterize Equipment Before Storing
Storing Leftover Pesticides
Heavy Water Use May Harm Septic Systems
Reduce Orchard Woes
Beware of Wood Heating Dangers]
T-U-R-K-E-Y Tips
Healthy …
Xenogeniates, A New And Unusual Genus Of Geniatine Scarab (Coleoptera: Scarabaeidae: Rutelinae: Geniatini) From Brazil, Karla Villatoro, Mary Liz Jameson
Xenogeniates, A New And Unusual Genus Of Geniatine Scarab (Coleoptera: Scarabaeidae: Rutelinae: Geniatini) From Brazil, Karla Villatoro, Mary Liz Jameson
University of Nebraska State Museum: Entomology Papers
A new genus and species of geniatine scarab is described from southeastern Brazil. The genus Xenogeniates is characterized by the unusual shape of the mesosternum, which is strongly invaginated and concave. Unusual characteristics of the taxon are discussed in relation to the Rutelinae and the Scarabaeidae.
Frequency Grid-A Simple Tool For Measuring Grassland Establishment, Kenneth P. Vogel, Robert A. Masters
Frequency Grid-A Simple Tool For Measuring Grassland Establishment, Kenneth P. Vogel, Robert A. Masters
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Simple, reliable tools are needed by land managers to quantify establishment success when seeding or re-seeding pastures or rangeland. A frequency grid was designed to measure seedling or plant establishment success for a single species, mixtures of species, or single species of a mixture. The frequency grid is a metal frame containing 25 squares (5 x 5) or cells and can be made from concrete reinforcing sheets that have 15 x 15 cm squares. When used, the frequency grid is either randomly or systematically placed within a seeded area. The number of cells containing 1 or more seeded plants is …
Structural And Functional Analysis Of Interhelical Interactions In The Human Immunodeficiency Virus Type 1 Gp41 Envelope Glycoprotein By Alanine-Scanning Mutagenesis, Min Lu, Marisa O. Stoller, Shilong Wang, Jie Liu, Melinda B. Fagan, Jack H. Nunberg
Structural And Functional Analysis Of Interhelical Interactions In The Human Immunodeficiency Virus Type 1 Gp41 Envelope Glycoprotein By Alanine-Scanning Mutagenesis, Min Lu, Marisa O. Stoller, Shilong Wang, Jie Liu, Melinda B. Fagan, Jack H. Nunberg
Biological Sciences Faculty Publications
Membrane fusion by human immunodeficiency virus type 1 (HIV-1) is promoted by the refolding of the viral envelope glycoprotein into a fusion-active conformation. The structure of the gp41 ectodomain core in its fusion-active state is a trimer of hairpins in which three antiparallel carboxyl-terminal helices pack into hydrophobic grooves on the surface of an amino-terminal trimeric coiled coil. In an effort to identify amino acid residues in these grooves that are critical for gp41 activation, we have used alanine-scanning mutagenesis to investigate the importance of individual side chains in determining the biophysical properties of the gp41 core and the membrane …
Swimming Mechanics And Behavior Of The Shallow-Water Brief Squid Lolliguncula Brevis, Ian K. Bartol, Mark R. Patterson, Roger Mann
Swimming Mechanics And Behavior Of The Shallow-Water Brief Squid Lolliguncula Brevis, Ian K. Bartol, Mark R. Patterson, Roger Mann
Biological Sciences Faculty Publications
Although squid are among the most versatile swimmers and rely on a unique locomotor system, little is known about the swimming mechanics and behavior of most squid, especially those that swim at low speeds in inshore waters. Shallow-water brief squid Lolliguncula brevis, ranging in size from 1.8 to 8.9 cm. in dorsal mantle length (DML), were placed in flumes and videotaped, and the data were analyzed using motion-analysis equipment. Flow visualization and force measurement experiments were also performed in water tunnels. Mean critical swimming speeds (Ucrit) ranged from 15.3 to 22.8 cm s-1, and mean …
Structure And Temporal Dynamics Of Populations Within Wheat Streak Mosaic Virus Isolates, Jeffrey S. Hall, Roy C. French, Thomas Jack Morris, Drake C. Stenger
Structure And Temporal Dynamics Of Populations Within Wheat Streak Mosaic Virus Isolates, Jeffrey S. Hall, Roy C. French, Thomas Jack Morris, Drake C. Stenger
Department of Plant Pathology: Faculty Publications
Variation within the Type and Sidney 81 strains of wheat streak mosaic virus was assessed by single-strand conformation polymorphism (SSCP) analysis and confirmed by nucleotide sequencing. Limiting-dilution subisolates (LDSIs) of each strain were evaluated for polymorphism in the P1, P3, NIa, and CP cistrons. Different SSCP patterns among LDSIs of a strain were associated with single-nucleotide substitutions. Sidney 81 LDSI-S10 was used as founding inoculum to establish three lineages each in wheat, corn, and barley. The P1, HC-Pro, P3, CI, NIa, NIb, and CP cistrons of LDSI-S10 and each lineage at passages 1, 3, 6, and 9 were evaluated for …
Predicting Leaf/Stem Ratio And Nutritive Value In Grazed And Nongrazed Big Bluestem, Alexander J. Smart, Walter H. Schacht, Lowell E. Moser
Predicting Leaf/Stem Ratio And Nutritive Value In Grazed And Nongrazed Big Bluestem, Alexander J. Smart, Walter H. Schacht, Lowell E. Moser
Department of Agronomy and Horticulture: Faculty Publications
Recent advancements in describing morphological development of perennial grasses have provided a useful index for identifying dates to harvest hay or graze pasture. The objective of this study was to determine the relationship between big bluestem (Andropogon gerardii Vitman) morphological developmental stage, days from 1 May, and accumulated growing degree days (GDD) and leaf/stem ratio, crude protein (CP), and neutral detergent fiber (NDF) in grazed and nongrazed swards. The grazing experiment was conducted in eastern Nebraska during 1997 and 1998. Six grazing treatments consisting of all combinations of two herbage allowances (22 or 66 kg of herbage dry matter …
Manure Utilization Guidelines, Maine Department Of Agriculture
Manure Utilization Guidelines, Maine Department Of Agriculture
Maine Collection
Manure Utilization Guidelines
Maine Department of Agriculture, Food and Rural Resources, State House Station No.28, Augusta, Maine 04333 (November 1, 2001).
Contents: Table of Content / Nutrient Management Plan / Standards / Attachments 1-7
Knowledge Discovery In Biological Datasets Using A Hybrid Bayes Classifier/Evolutionary Algorithm, Michael L. Raymer, Leslie A. Kuhn, William F. Punch
Knowledge Discovery In Biological Datasets Using A Hybrid Bayes Classifier/Evolutionary Algorithm, Michael L. Raymer, Leslie A. Kuhn, William F. Punch
Kno.e.sis Publications
A key element of bioinformatics research is the extraction of meaningful information from large experimental data sets. Various approaches, including statistical and graph theoretical methods, data mining, and computational pattern recognition, have been applied to this task with varying degrees of success. We have previously shown that a genetic algorithm coupled with a k-nearest-neighbors classifier performs well in extracting information about protein-water binding from X-ray crystallographic protein structure data. Using a novel classifier based on the Bayes discriminant function, we present a hybrid algorithm that employs feature selection and extraction to isolate salient features from large biological data sets. The …
Profile Combinatorics For Fragment Selection In Comparative Protein Structure Modeling, Deacon Sweeney, Travis E. Doom, Michael L. Raymer
Profile Combinatorics For Fragment Selection In Comparative Protein Structure Modeling, Deacon Sweeney, Travis E. Doom, Michael L. Raymer
Kno.e.sis Publications
Sequencing of the human genome was a great stride towards modeling cellular complexes, massive systems whose key players are proteins and DNA. A major bottleneck limiting the modeling process is structure and function annotation for the new genes. Contemporary protein structure prediction algorithms represent the sequence of every protein of known structure with a profile to which the profile of a protein sequence of unknown structure is compared for recognition. We propose a novel approach to increase the scope and resolution of protein structure profiles. Our technique locates equivalent regions among the members of a structurally similar fold family, and …
Effect Of Cooling Rate On Crystallization Behavior Of Milk Fat Fraction/Sunflower Oil Blends, Silvana Martini, M. L. Herrera, R. W. Hartel
Effect Of Cooling Rate On Crystallization Behavior Of Milk Fat Fraction/Sunflower Oil Blends, Silvana Martini, M. L. Herrera, R. W. Hartel
Nutrition, Dietetics, and Food Sciences Faculty Publications
The effect of cooling rate (slow: 0.1°C/min; fast: 5.5°C/min) on the crystallization kinetics of blends of a highmelting milk fat fraction and sunflower oil (SFO) was investigated by pulsed NMR and DSC. For slow cooling rate, the majority of crystallization had already occurred by the time the set crystallization temperature had been reached. For fast cooling rate, crystallization started after the samples reached the selected crystallization temperature, and the solid fat content curves were hyperbolic. DSC scans showed that at slow cooling rates, molecular organization took place as the sample was being cooled to crystallization temperature and there was fractionation …
High Frequency Of Extra-Pair Paternity In Eastern Kingbirds, Diane L. Rowe, Michael T. Murphy, Robert C. Fleischer, Paul G. Wolf
High Frequency Of Extra-Pair Paternity In Eastern Kingbirds, Diane L. Rowe, Michael T. Murphy, Robert C. Fleischer, Paul G. Wolf
Biology Faculty Publications and Presentations
Genetic parentage in the socially monogamous and territorial Eastern Kingbird( Tyrannust tyrannus) was examined in a central New York population by multilocus DNA fingerprinting. Extra-pair young were identified in 60% (12 of 20) of nests. Of the 64 nestlings profiled, 42% were sired by extra-pair males, but no cases of conspecific brood parasitism were detected. These results are markedly different from a previous electrophoretic study of the same species in a Michigan population, which reported 39% of nestlings were unrelated to one (typically the mother, quasiparasitismo)r both (conspecificb roodp arasitism) of the putative parents. In the New York population, extra-pairp …
Host-Switching Does Not Circumvent The Ni-Based Defence Of The Ni Hyperaccumulator Streptanthus Polygaloides (Brassicaceae), Micheal A. Davis, Robert S. Boyd, James H. Cane
Host-Switching Does Not Circumvent The Ni-Based Defence Of The Ni Hyperaccumulator Streptanthus Polygaloides (Brassicaceae), Micheal A. Davis, Robert S. Boyd, James H. Cane
Faculty Publications
Elevated tissue concentrations of metals have been shown to defend metal-hyperaccumulating plants against both herbivores and pathogens. Tolerance of metal-based defences presents a challenge to herbivores, because heavy metals cannot be degraded or metabolized. One strategy that herbivores can employ to counter high-metal defences is dietary dilution, or host switching. Highly mobile herbivores are most likely to use this strategy, but less mobile lepidopteran larvae can also Improve their performance on toxic hosts if early instar development occurs on more favourable hosts. We examined the effects of host switching on growth and survival of a generalist folivore. Specifically, we tested …