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California Polytechnic State University, San Luis Obispo

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Articles 1681 - 1710 of 2152

Full-Text Articles in Life Sciences

Xiphiorhynchus Cf. X. Eocaenicus (Woodward, 1901), (Scombroidei: Xiphiidae: Xiphiorhynchinae) From The Middle Eocene Of Mississippi, The First Transatlantic Distribution Of A Species Of Xiphiorhynchus, Harry L. Fierstine, James E. Starnes Jun 2005

Xiphiorhynchus Cf. X. Eocaenicus (Woodward, 1901), (Scombroidei: Xiphiidae: Xiphiorhynchinae) From The Middle Eocene Of Mississippi, The First Transatlantic Distribution Of A Species Of Xiphiorhynchus, Harry L. Fierstine, James E. Starnes

Biological Sciences

An anterior (distal) rostrum (MMNS 2957) from the Moodys Branch Formation (late middle Eocene). Tesheva Creek, Yazoo County, Mississippi, U.S.A., is described and identified as Xiphiorhynchus cf. X. eocaenicus. The specimen is compared to various species of Xiphiorhynchus, especially the holotype of X. eocaenicl.ls (BMNH 25744), Braeklesham Group, early middle Eocene, England. This represents the first record of a species of Xiphiorhynchl.ls in deposits on both sides of the North Atlantic Ocean. Xiphiorhynchus eocaenicus is thought to have had similar environmental prtoferences and habits as the extant swordfish, Xiphias gladius. Since the swordfish prefers oceanic water and makes transatlantic movements, …

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A New Aglyptorhynchus (Perciformes: Scombroidei) From The Lincoln Creek Formation (Late Oligocene, Washington, U.S.A.), Harry L. Fierstine Jun 2005

A New Aglyptorhynchus (Perciformes: Scombroidei) From The Lincoln Creek Formation (Late Oligocene, Washington, U.S.A.), Harry L. Fierstine

Biological Sciences

A partial rostrum with an attachcd lower jaw, a posterior neurocranium, and a proximal hyomandibular from the Lincoln Creek Formation (late Oligocene, Washington) arc described and identified as Aglyptorhynchlls coillmhianlls sp, nov. In addition. ten articulated anterior caudal vertebrae presumably from the Lincoln Creek Formation arc described and identified as Aglyptorhyllchlls sp. This is a second record of an Aglyptorhynchus from a deposit bordering the Pacific Ocean, The specimens are compared with other billfishes (Perciformes: Scombroidei), both extant and extinct. Unusual features include a tripartite celous occipital condyle composed equally of the basioccipital and cxoccipitals, a lower jaw that is …

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Sexual Size Dimorphism And Growth Plasticity In Snakes: An Experiment On The Western Diamond‐Backed Rattlesnake (Crotalus Atrox), Emily N, Taylor, Dale F. Denardo Jun 2005

Sexual Size Dimorphism And Growth Plasticity In Snakes: An Experiment On The Western Diamond‐Backed Rattlesnake (Crotalus Atrox), Emily N, Taylor, Dale F. Denardo

Biological Sciences

We conducted an experiment to examine the effects of sex and food intake on growth, mass gain, and attainment of sexual maturity in Western Diamond‐backed Rattlesnakes (Crotalus atrox). We also measured testosterone levels to determine whether testosterone might be involved in the male‐biased sexual size dimorphism observed in this species. We collected neonate rattlesnakes and raised them in the laboratory for 2 years on either a high‐intake diet (fed one mouse per week) or a low‐intake diet (fed one mouse every 3 weeks). High‐intake snakes grew and gained mass more rapidly than low‐intake snakes, but males did not …

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Effects Of Food Supplementation On The Physiological Ecology Of Female Western Diamond‐Backed Rattlesnakes (Crotalus Atrox), Emily N. Taylor, Michael A. Malawy, Dawn M. Browning, Shea V. Lemar, Dale F. Denardo Jun 2005

Effects Of Food Supplementation On The Physiological Ecology Of Female Western Diamond‐Backed Rattlesnakes (Crotalus Atrox), Emily N. Taylor, Michael A. Malawy, Dawn M. Browning, Shea V. Lemar, Dale F. Denardo

Biological Sciences

Food availability is an important factor in the life histories of organisms because it is often limiting and thus can affect growth, mass change, reproduction, and behaviors such as thermoregulation, locomotion, and mating. Experimental studies in natural settings allow researchers to examine the effects of food on these parameters while animals are free to behave naturally. The wide variation among organisms in energy demands and among environmental food resources suggest that responses to changes in food availability may vary among organisms. Since most supplemental feeding field experiments have been conducted on species with high energy demands, we conducted a supplemental …

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Taxonomic Revision And Stratigraphic Provenance Of Histiophorus Rotundus Woodward 1901 (Teleostei, Perciformes), Kenneth A. Monsch, Harry L. Fierstine, Robert E. Weems Jun 2005

Taxonomic Revision And Stratigraphic Provenance Of Histiophorus Rotundus Woodward 1901 (Teleostei, Perciformes), Kenneth A. Monsch, Harry L. Fierstine, Robert E. Weems

Biological Sciences

Until recently, Histiophorus rotundus Woodward 1901, was known from a single, poorly preserved rostrum from the Tertiary phosphate beds near Charleston, South Carolina, an area from which many fossils have been described. The specimen is relatively featureless externally; its internal anatomy is unknown and the documentation of its geological provenance was poor. In an earlier revision the species was transferred to the fossil billfish genus Xiphiorhynchus Van Beneden, 1871. Here we confirm this designation, supported by new morphological studies of the holotype, recently found specimens of tXiphiorhynchus rotundus (Woodward, 1901), and the stratigraphic record of tXiphiorhynchus. The systematic paleontology we …

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A Multi-Platform Bathyphotometer For Fine-Scale, Coastal Bioluminescence Research, Christen M. Herren, Steven H.D. Haddock, Cyril Johnson, Cristina M. Orrico, Mark A. Moline, James F. Case May 2005

A Multi-Platform Bathyphotometer For Fine-Scale, Coastal Bioluminescence Research, Christen M. Herren, Steven H.D. Haddock, Cyril Johnson, Cristina M. Orrico, Mark A. Moline, James F. Case

Biological Sciences

Although bioluminescence (BL) in the open ocean has been extensively studied, coastal BL remains poorly understood due, in large degree, to a lack of BL instrumentation appropriate to measure the fine-scale biological and physical complexity of the coastal regime. As a contribution toward understanding coastal BL, we developed the Multipurpose Bioluminescence Bathyphotometer (MBBP). This compact, self-contained bathyphotometer (BP) was designed to function in a variety of deployment modes, including conventional shipboard profilers, towed platforms, autonomous underwater vehicles (AUVs), and profiling moorings. In all configurations, the instrument preserves signal structure at centimeter to meter scale resolution, the scale at which higher-flow …

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Making Babies By The Flip Of A Coin?, Matthew A. Carlton, William D. Stansfield May 2005

Making Babies By The Flip Of A Coin?, Matthew A. Carlton, William D. Stansfield

Biological Sciences

Many probability and genetics textbooks pose standard questions about eye color, birth defects, sexes of children, and so on. Solutions to these questions, specifically about sexes, generally make two assumptions: first, that a randomly selected embryo is equally likely to be male or female; second, that the sexes of successive children from the same parents are independent. In other words, probabilists (and some geneticists) treat sexes of children like flips of a fair coin: two possible outcomes, each equally likely, with outcomes independent from trial to trial. But are these assumptions realistic? Demographic data suggest that neither a balance of …

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Amount Of Food Group Variety Consumed In The Diet And Long-Term Weight Loss Maintenance, Hollie A. Raynor, Robert W. Jeffery, Suzanne Phelan, James O. Hill, Rena R. Wing May 2005

Amount Of Food Group Variety Consumed In The Diet And Long-Term Weight Loss Maintenance, Hollie A. Raynor, Robert W. Jeffery, Suzanne Phelan, James O. Hill, Rena R. Wing

Kinesiology and Public Health

Objective: Decreases in variety of foods consumed within high-fat-dense food groups and increases in variety of foods consumed within low-fat-dense food groups are associated with lower energy intake and greater weight loss during obesity treatment and may assist with weight loss maintenance. This study examined food group variety in 2237 weight loss maintainers in the National Weight Control Registry, who had lost 32.2 ± 18.0 kg (70.9 ± 39.5 lbs) and maintained a weight loss of at least 13.6 kg (30 lbs) for 6.1 ± 7.7 years.
Research Methods and Procedures: At entry into the registry, registry members completed a …

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Biomolecule Detection Via Target Mediated Nanoparticle Aggregation And Dielectrophoretic Impedance Measurement, Philip J. Costanzo, Enzhu Liang, Timothy E. Patten, Scott D. Collins, Rosemary L. Smith Apr 2005

Biomolecule Detection Via Target Mediated Nanoparticle Aggregation And Dielectrophoretic Impedance Measurement, Philip J. Costanzo, Enzhu Liang, Timothy E. Patten, Scott D. Collins, Rosemary L. Smith

Chemistry and Biochemistry

A new biosensing system is described that is based on the aggregation of nanoparticles by a target biological molecule and dielectrophoretic impedance measurement of these aggregates. The aggregation process was verified within a microchannel via fluorescence microscopy, demonstrating that this process can be used in a real time sensor application. Positive dielectrophoresis is employed to capture the nanoparticle aggregates at the edge of thin film electrodes, where their presence is detected either by optical imaging via fluorescence microscopy or by measuring the change in electrical impedance between adjacent electrodes. The electrical detection mechanism demonstrates the potential for this method as …

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Hiv And Nutrition: Pregnant And Lactating Women, Peggy Papathakis, Nigel Rollins Apr 2005

Hiv And Nutrition: Pregnant And Lactating Women, Peggy Papathakis, Nigel Rollins

Food Science and Nutrition

No abstract provided.

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The Metalloprotease Of Listeria Monocytogenes Controls Cell Wall Translocation Of The Broad-Range Phospholipase C, P.S. Marie Yeung, Nicholas Zagorski, Helene Marquis Apr 2005

The Metalloprotease Of Listeria Monocytogenes Controls Cell Wall Translocation Of The Broad-Range Phospholipase C, P.S. Marie Yeung, Nicholas Zagorski, Helene Marquis

Biological Sciences

Listeria monocytogenes is a gram-positive bacterial pathogenthat multiplies in the cytosol of host cells and spreads directlyfrom cell to cell. During cell-to-cell spread, bacteria becometemporarily confined to secondary vacuoles. The broad-rangephospholipase C (PC-PLC) of L. monocytogenes contributes tobacterial escape from secondary vacuoles. PC-PLC requires cleavageof an N-terminal propeptide for activation, and Mpl, a metalloproteaseof Listeria, is involved in the proteolytic activation of PC-PLC.Previously, we showed that cell wall translocation of PC-PLCis inefficient, resulting in accumulation of PC-PLC at the membrane-cellwall interface. In infected cells, rapid cell wall translocationof PC-PLC is triggered by a decrease in pH and correlates withcleavage …

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Hunters Ring Dinner Bell For Ravens: Experimental Evidence Of A Unique Foraging Strategy, Crow White Apr 2005

Hunters Ring Dinner Bell For Ravens: Experimental Evidence Of A Unique Foraging Strategy, Crow White

Biological Sciences

We have long known that corvids are adaptively flexible in behavior, but have rarely tested their flexibility and creativity in solving problems outside the laboratory. Through a carefully controlled experiment conducted in the wild, I have found that Common Ravens (Corvus corax) fly toward gunshot sounds, presumably in order to locate animal gut piles left by hunters. This is the first conclusive evidence of any scavenger species pursuing gunshots. Furthermore, ravens exhibited this behavior only when gunshots were fired from within forested habitat, when the shots may be most valuable to them for locating gut piles. Interestingly, raven behaviors suggest …

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Involving Support Partners In Obesity Treatment, Amy Gorin, Suzanne Phelan, Deborah Tate, Nancy Sherwood, Robert Jeffery, Rena R. Wing Apr 2005

Involving Support Partners In Obesity Treatment, Amy Gorin, Suzanne Phelan, Deborah Tate, Nancy Sherwood, Robert Jeffery, Rena R. Wing

Kinesiology and Public Health

In this study, the authors examined whether the number or success of weight loss partners influences participants' outcomes in behavioral weight loss treatment. Overweight participants (n = 109) assigned to an exercise intensive group in a larger trial were encouraged to invite up to 3 partners to attend treatment. Weight losses at 6, 12, and 18 months were not associated with the number of partners (0-3) but were associated with the weight loss success of the partners. Participants with at least 1 successful partner (weight loss ≥10% at 6 months) lost significantly (p = .004) more weight at 6, 12, …

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A Comparison Of The Clinical And Cost-Effectiveness Of 3 Intervention Strategies For Aids Wasting, Abby H. Shevitz, Ira B. Wilson, Ann Y. Mcdermott, Donna Spiegelman, Sarah C. Skinner, Kristina Antonsson, Jennifer E. Layne, Aaron Beaston-Blaakman, Donald S. Shepard, Sherwood L. Gorbach Apr 2005

A Comparison Of The Clinical And Cost-Effectiveness Of 3 Intervention Strategies For Aids Wasting, Abby H. Shevitz, Ira B. Wilson, Ann Y. Mcdermott, Donna Spiegelman, Sarah C. Skinner, Kristina Antonsson, Jennifer E. Layne, Aaron Beaston-Blaakman, Donald S. Shepard, Sherwood L. Gorbach

Kinesiology and Public Health

To compare oxandrolone (OX) or strength training with nutrition alone (NA) for AIDS wasting.

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Physical Properties Of Yogurt Fortified With Various Commercial Whey Protein Concentrates, Isabelle Sodini, John Montella, Phillip S. Tong Apr 2005

Physical Properties Of Yogurt Fortified With Various Commercial Whey Protein Concentrates, Isabelle Sodini, John Montella, Phillip S. Tong

Dairy Science

The effects of whey protein concentrates on physical and rheological properties of yogurt were studied. Five commercial whey protein concentrates (340 g kg−1 protein nominal) were used to fortify milk to 45 g protein kg−1. Fermentation was performed with two different starters (ropy and non-ropy). Resulting yogurts were compared with a control yogurt enriched with skim milk powder. The water-holding capacity of the yogurt fortified with skim milk powder was 500 g kg−1 and ranged from 600 to 638 g kg−1 when fortified with whey protein concentrates. Significant rheological differences have been noticed between the …

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An Autonomous Vehicle Approach For Quantifying Bioluminescence In Ports And Harbors, Mark A. Moline, Paul Bissett, Shelley Blackwell, James Mueller, Jeff Sevadjian, Charles Trees, Ron Zaneveld Mar 2005

An Autonomous Vehicle Approach For Quantifying Bioluminescence In Ports And Harbors, Mark A. Moline, Paul Bissett, Shelley Blackwell, James Mueller, Jeff Sevadjian, Charles Trees, Ron Zaneveld

Biological Sciences

Bioluminescence emitted from marine organisms upon mechanical stimulation is an obvious military interest, as it provides a low-tech method of identifying surface and subsurface vehicles and swimmer tracks. Clearly, the development of a passive method of identifying hostile ships, submarines, and swimmers, as well as the development of strategies to reduce the risk of detection by hostile forces is relevant to Naval operations and homeland security. The measurement of bioluminescence in coastal waters has only recently received attention as the platforms and sensors were not scaled for the inherent small-scale nature of nearshore environments. In addition to marine forcing, many …

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Monitoring Water Transparency And Diver Visibility In Ports And Harbors Using Aircraft Hyperspectral Remote Sensing, Charles C. Trees, Paul W. Bissett, Heidi Dierssen, David D.R. Kohler, Mark A. Moline, James L. Mueller, Richard E. Pieper, Michael S. Twardowski, J. Ronald V. Zaneveld Mar 2005

Monitoring Water Transparency And Diver Visibility In Ports And Harbors Using Aircraft Hyperspectral Remote Sensing, Charles C. Trees, Paul W. Bissett, Heidi Dierssen, David D.R. Kohler, Mark A. Moline, James L. Mueller, Richard E. Pieper, Michael S. Twardowski, J. Ronald V. Zaneveld

Biological Sciences

Diver visibility analyses and predictions, and water transparency in general, are of significant military and commercial interest. This is especially true in our current state, where ports and harbors are vulnerable to terrorist attacks from a variety of platforms both on and below the water (swimmers, divers, AUVs, ships, submarines, etc.). Aircraft hyperspectral imagery has been previously used successfully to classify coastal bottom types and map bathymetry and it is time to transition this observational tool to harbor and port security. Hyperspectral imagery is ideally suited for monitoring small-scale features and processes in these optically complex waters, because of its …

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Clean, High-Yield Preparation Of S,S- And R,S- Amino Acid Isosteres, Aslam A. Malik, Todd E. Clement, Hasan Palandoken, James Robinson Iii, Joy A. Stringer Mar 2005

Clean, High-Yield Preparation Of S,S- And R,S- Amino Acid Isosteres, Aslam A. Malik, Todd E. Clement, Hasan Palandoken, James Robinson Iii, Joy A. Stringer

Chemistry and Biochemistry

The present invention provides compounds and methods that can be used to convert the intermediate halomethyl ketones (HMKs), e.g., chloromethyl ketones, to the corresponding S,S- and R,S-diastereomers. More particularly, the present invention provides: (1) reduction methods; (2) inversion methods; and (3) methods involving the epoxidation of alkenes. Using the various methods of the present invention, the R,S-epoxide and the intermediary compounds can be prepared reliably, in high yields and in high purity.

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Complete Genome Sequence Of The Probiotic Lactic Acid Bacterium Lactobacillus Acidophilus Ncfm, Eric Altermann, W. Michael Russell, M. Andrea Azcarate- Peril, Rodolphe Barrangou, B. Logan Buck, Olivia Mcauliffe, Nicole Souther, Alleson Dobson, Tri Duong, Michael Callanan, Sonja Lick, Alice Hamrick, Raul J. Cano, Todd R. Klaenhammer Mar 2005

Complete Genome Sequence Of The Probiotic Lactic Acid Bacterium Lactobacillus Acidophilus Ncfm, Eric Altermann, W. Michael Russell, M. Andrea Azcarate- Peril, Rodolphe Barrangou, B. Logan Buck, Olivia Mcauliffe, Nicole Souther, Alleson Dobson, Tri Duong, Michael Callanan, Sonja Lick, Alice Hamrick, Raul J. Cano, Todd R. Klaenhammer

Biological Sciences

Lactobacillus acidophilus NCFM is a probiotic bacterium that has been produced commercially since 1972. The complete genome is 1,993,564 nt and devoid of plasmids. The average GC content is 34.71% with 1,864 predicted ORFs, of which 72.5% were functionally classified. Nine phage-related integrases were predicted, but no complete prophages were found. However, three unique regions designated as potential autonomous units (PAUs) were identified. These units resemble a unique structure and bear characteristics of both plasmids and phages. Analysis of the three PAUs revealed the presence of two R/M systems and a prophage maintenance system killer protein. A spacers interspersed direct …

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The Relationship Between Pelagic Larval Duration And Range Size In Tropical Reef Fishes: A Synthetic Analysis, Sarah E. Lester, Benjamin I. Ruttenberg Mar 2005

The Relationship Between Pelagic Larval Duration And Range Size In Tropical Reef Fishes: A Synthetic Analysis, Sarah E. Lester, Benjamin I. Ruttenberg

Biological Sciences

We address the conflict in earlier results regarding the relationship between dispersal potential and range size. We examine all published pelagic larval duration data for tropical reef fishes. Larval duration is a convenient surrogate for dispersal potential in marine species that are sedentary as adults and that therefore only experience significant dispersal during their larval phase. Such extensive quantitative dispersal data are only available for fishes and thus we use a unique dataset to examine the relationship between dispersal potential and range size. We find that dispersal potential and range size are positively correlated only in the largest ocean basin, …

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Preparation Of 2s,3s-N-Isobutyl-N-(2-Hydroxy-3-Amino-4-Phenylbutyl)-P-Nitrobenzenesulfonylamide Hydrochloride And Other Derivatives Of 2-Hydroxy-1,3-Diamines, Aslam A. Malik, Hasan Palandoken, Joy A. Stringer, Roland P. Carlson, John Leach, Thomas G. Archibald, Robert G. Miotke Feb 2005

Preparation Of 2s,3s-N-Isobutyl-N-(2-Hydroxy-3-Amino-4-Phenylbutyl)-P-Nitrobenzenesulfonylamide Hydrochloride And Other Derivatives Of 2-Hydroxy-1,3-Diamines, Aslam A. Malik, Hasan Palandoken, Joy A. Stringer, Roland P. Carlson, John Leach, Thomas G. Archibald, Robert G. Miotke

Chemistry and Biochemistry

The present invention provides a new process for the preparation of 2S,3S-N-isobutyl-N-(2-hydroxy-3-amino-4phenylbutyl)- p-nitrobenzenesulfonylamide hydrochloride, wherein this compound is prepared directly from the chloromethylalcohol. Importantly, the process of the present invention results in higher yields of 2S,3S-N-isobutyl-N-(2hydroxy -3 -amino -4-phenylbutyl) -pnitrobenzenesulfonylamide hydrochloride without sacrificing its purity. The processes of the present invention can be used to prepare not only the 2S,3S-derivative, but also the 2R,3S-, 2S,2R- and the 2R,3R-derivatives.

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Hybrid Xerogel Films As Novel Coatings For Antifouling And Fouling Release, Ying Tang, John A. Finlay, Gregory L. Kowalke, Anne E. Meyer, Frank V. Bright, Maureen E. Callow, James A. Callow, Dean E. Wendt, Michael R. Detty Feb 2005

Hybrid Xerogel Films As Novel Coatings For Antifouling And Fouling Release, Ying Tang, John A. Finlay, Gregory L. Kowalke, Anne E. Meyer, Frank V. Bright, Maureen E. Callow, James A. Callow, Dean E. Wendt, Michael R. Detty

Biological Sciences

Hybrid sol-gel-derived xerogel films prepared from 45/55 (mol ratio) n-propyltrimethoxysilane (C3-TMOS)/tetramethylorthosilane (TMOS), 2/98 (mol ratio) bis[3-(trimethoxysilyl)propyl]-ethylenediamine (enTMOS)/tetraethylorthosilane (TEOS), 50/50 (mol ratio) n-octyltriethoxysilane (C8-TEOS)/TMOS, and 50/50 (mol ratio) 3,3,3-trifluoropropyltrimethoxysilane (TFP-TMOS)/TMOS were found to inhibit settlement of zoospores of the marine fouling alga Ulva (syn. Enteromorpha) relative to settlement on acid-washed glass and give greater release of settled zoospores relative to glass upon exposure to pressure from a water jet. The more hydrophobic 50/50 C8-TEOS/TMOS xerogel films had the lowest critical surface tension by comprehensive contact angle analysis and gave significantly greater release of 8-day Ulva sporeling biomass after exposure to …

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Effects Of Heat Removal Through The Hand On Metabolism And Performance During Cycling Exercise In The Heat, Andrew R. Hsu, Todd A. Hagobian, Kevin A. Jacobs, Hamdee Attallah, Anne L. Friedlander Feb 2005

Effects Of Heat Removal Through The Hand On Metabolism And Performance During Cycling Exercise In The Heat, Andrew R. Hsu, Todd A. Hagobian, Kevin A. Jacobs, Hamdee Attallah, Anne L. Friedlander

Kinesiology and Public Health

OBJECTIVE: This two-part study tested the hypotheses that the use of a new cooling device, purported to extract heat from the body core through the palm of the hand, would (a) attenuate core temperature rise during submaximal exercise in the heat, thereby suppressing exercise-associated metabolic changes, and (b) facilitate a higher sustained workload, thus shortening the completion time of a time-trial performance test. METHODS: In Study 1, 8 male triathletes (age 27.9 ± 2.0 yrs, mass 77.2 ± 3.1 kg, VO2peak 59.0 ± 4.1 ml x min-1 x kg-1) cycled for 1 hr at the …

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Day Vs. Night Sampling For Spiders In Grape Vineyards, Michael J. Costello, Kent M. Daane Jan 2005

Day Vs. Night Sampling For Spiders In Grape Vineyards, Michael J. Costello, Kent M. Daane

Horticulture and Crop Science

We compared day sampling (between 0700 and 1100) and night sampling (between 1900 and 2300) of spiders on grapevines in a California vineyard in 1993 and 1994, shaking spiders from the vines onto a drop cloth and vacuuming them up. Pooled density of the seven most abundant spider species did not differ significantly between day and night sampling, nor did density of Cheiracanthium inclusum (Miturgidae), Trachelas pacificus (Corrinidae), Oxyopes spp. (Oxyopidae) or Neoscona oaxacensis (Araneidae). Under day sampling Metaphidippus vitis (Salticidae) was 60% more abundant and Hololena nedra (Agelenidae) more than 2.5 fold more abundant than under night sampling. Daytime …

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Conjugated Linoleic Acids In The Dairy Cow: Biological Activities And Applications, Daniel G. Peterson Jan 2005

Conjugated Linoleic Acids In The Dairy Cow: Biological Activities And Applications, Daniel G. Peterson

Animal Science

No abstract provided.

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Relationship Between Habitat Distribution, Growth Rate, And Plasticity In Congeneric Larval Dragonflies, S. J. Mccauley Jan 2005

Relationship Between Habitat Distribution, Growth Rate, And Plasticity In Congeneric Larval Dragonflies, S. J. Mccauley

Biological Sciences

The relationship between habitat distribution, growth rate, and plasticity was examined in the larvae of three species of dragonfly in the genus Libellula L., 1758. Growth rates were compared under three conditions: in the absence of predation risk, in the presence of sunfish (Lepomis macrochirus Rafinesque, 1819; Pisciformes: Centrachidae), and in the presence of invertebrate predators. I assessed how the habitat distributions of the three species of dragonfly, specifically how commonly they occur with fish, were related to growth rates and to the level of growth plasticity under different levels of perceived predation risk. There was a negative relationship …

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The Bell Family Legacies, William D. Stansfield Jan 2005

The Bell Family Legacies, William D. Stansfield

Biological Sciences

No abstract provided.

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Use Of Cover And Response To Cover Type Edges By Female Sierra Nevada Red Foxes In Winter, John F. Benson, John D. Perrine, Richard T. Golightly Jr., Reginald H. Barrett Jan 2005

Use Of Cover And Response To Cover Type Edges By Female Sierra Nevada Red Foxes In Winter, John F. Benson, John D. Perrine, Richard T. Golightly Jr., Reginald H. Barrett

Biological Sciences

Red foxes (Vulpes vulpes) use a variety of habitats across their range, including semiarid deserts, tundra, boreal forests, farmland, and urban areas (Larivière and Pasitschniak-Arts 1996). Within these habitats there is much variation in the use of different cover types among populations of red foxes (Jones and Theberge 1982, Halpin and Bissonette 1988, Theberge and Wedeles 1989, St-Georges et al. 1995). In Maine, red foxes used coniferous stands and open areas more than expected (Halpin and Bissonette 1988). In British Columbia, red foxes used shrub communities more than expected and open areas less than expected (Jones and Theberge 1982). In …

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Removal Of P-Cresol Sulfate By Hemodialysis, Andres W. Martinez, Natalie S. Recht, Thomas H. Hostetter, Timothy W. Meyer Jan 2005

Removal Of P-Cresol Sulfate By Hemodialysis, Andres W. Martinez, Natalie S. Recht, Thomas H. Hostetter, Timothy W. Meyer

Chemistry and Biochemistry

Protein-bound solutes are poorly cleared by dialysis. Among the most extensively studied of these solutes is p-cresol, which has been shown to be toxic in vitro. This study examined the form in which p-cresol circulates and quantified its removal by hemodialysis. HPLC analysis of plasma from hemodialysis patients contained a peak whose mobility corresponded to synthetic p-cresol sulfate (PCS) but no detectable unconjugated p-cresol. Treatment with sulfatase resulted in recovery of this peak as p-cresol, confirming its identity. Subsequent studies compared the removal of PCS and another protein-bound solute, indican, to the removal of urea during clinical hemodialysis treatments. …

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Correct Author Citation For Cirsium Eatonii Var. Eriocephalum (Asteraceae: Cardueae), David J. Keil Jan 2005

Correct Author Citation For Cirsium Eatonii Var. Eriocephalum (Asteraceae: Cardueae), David J. Keil

Biological Sciences

No abstract provided.

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