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Articles 901 - 915 of 915
Full-Text Articles in Entire DC Network
Interspecific Variation In Patterns Of Adhesion Of Marine Fouling To Silicone Surfaces, Eric R. Holm, Christopher J. Kavanagh, Anne E. Meyer, Deborah Wiebe, Brian T. Nedved, Dean Wendt, Celia M. Smith, Michael G. Hadfield, Geoff Swain, Christina D. Wood, Kathryn Truby, Judith Stein, Jean Montemarano
Interspecific Variation In Patterns Of Adhesion Of Marine Fouling To Silicone Surfaces, Eric R. Holm, Christopher J. Kavanagh, Anne E. Meyer, Deborah Wiebe, Brian T. Nedved, Dean Wendt, Celia M. Smith, Michael G. Hadfield, Geoff Swain, Christina D. Wood, Kathryn Truby, Judith Stein, Jean Montemarano
Biological Sciences
The adhesion of six fouling organisms: the barnacle Balanus eburneus, the gastropod mollusc Crepidula fornicata, the bivalve molluscs Crassostrea virginica and Ostrea/Dendrostrea spp., and the serpulid tubeworms Hydroides dianthus and H. elegans, to 12 silicone fouling-release surfaces was examined. Removal stress (adhesion strength) varied among the fouling species and among the surfaces. Principal component analysis of the removal stress data revealed that the fouling species fell into two distinct groups, one comprising the bivalve molluscs and tubeworms, and the other the barnacle and the gastropod mollusc. None of the silicone materials generated a minimum in removal stress …
Factors That Influence Elastomeric Coating Performance: The Effect Of Coating Thickness On Basal Plate Morphology, Growth And Critical Removal Stress Of The Barnacle Balanus Amphitrite, D. E. Wendt, G. L. Kowalke, J. Kim, I. L. Singer
Factors That Influence Elastomeric Coating Performance: The Effect Of Coating Thickness On Basal Plate Morphology, Growth And Critical Removal Stress Of The Barnacle Balanus Amphitrite, D. E. Wendt, G. L. Kowalke, J. Kim, I. L. Singer
Biological Sciences
Silicone coatings are currently the most effective non-toxic fouling release surfaces. Understanding the mechanisms that contribute to the performance of silicone coatings is necessary to further improve their design. The objective of this study was to examine the effect of coating thickness on basal plate morphology, growth, and critical removal stress of the barnacle Balanus amphitrite. Barnacles were grown on silicone coatings of three thicknesses (0.2, 0.5 and 2 mm). Atypical (“cupped”) basal plate morphology was observed on all surfaces, although there was no relationship between coating thickness and i) the proportion of individuals with the atypical morphology, or …
Winter Profile Of Plasma Sex Steroid Levels In Free-Living Male Western Diamond-Backed Rattlesnakes, Crotalus Atrox (Serpentes: Viperidae), Gordon W. Schuett, Roger A. Repp, Emily N. Taylor, Dale F. Denardo, Ryan L. Earley, Edward A. Van Kirk, William J. Murdoch
Winter Profile Of Plasma Sex Steroid Levels In Free-Living Male Western Diamond-Backed Rattlesnakes, Crotalus Atrox (Serpentes: Viperidae), Gordon W. Schuett, Roger A. Repp, Emily N. Taylor, Dale F. Denardo, Ryan L. Earley, Edward A. Van Kirk, William J. Murdoch
Biological Sciences
Recent field studies on the reproductive ecology of western diamond-backed rattlesnakes (Crotalus atrox) from populations in southern Arizona showed significant differences in the concentration of plasma sex steroids (testosterone, T; 5α-dihydrotestosterone, DHT; and 17β-estradiol, E2) throughout the active season (March–October), and peak levels were coincident with the two mating periods (late summer and early spring). There is, however, no information on levels of sex steroids during winter. Similar to most snakes, hibernating individuals of C. atrox are typically inaccessible, but in southern Arizona, where environmental conditions are typically mild during winter, adult males frequently bask at …
Vibrio Parahaemolyticus Growth Under Low-Iron Conditions And Survival Under High-Magnesium Conditions, Chia-Hsin Ju, P.S. Marie Yeung, Jessica Oesterling, Daniel A. Seigerman, Kathryn J. Boor
Vibrio Parahaemolyticus Growth Under Low-Iron Conditions And Survival Under High-Magnesium Conditions, Chia-Hsin Ju, P.S. Marie Yeung, Jessica Oesterling, Daniel A. Seigerman, Kathryn J. Boor
Biological Sciences
Since 1996, Vibrio parahaemoiyticus serotype 03:K6 and closely related strains have been associated with an increased incidence of V. parahaemolyticus gastroenteritis worldwide, suggesting the emergence of strains with enhanced abilities to cause disease. One hypothesis for the recent emergence of V. porahaemolyticus 03:K6 and related strains is an enhanced capacity for environmental survival relative to other strains, which might result in increased human exposure to these organisms. Therefore, the objective of this study was to test the hypothesis that survival or growth characteristics of clinical V. parahaemolyticus isolates differ from those of nonclinical isolates under different environmental conditions. Twenty- six …
A Reaction–Diffusion Analysis Of Energetics In Large Muscle Fibers Secondarily Evolved For Aerobic Locomotor Function, Kristin M. Hardy, Bruce R. Locke, Marilia Da Silva, Stephen T. Kinsey
A Reaction–Diffusion Analysis Of Energetics In Large Muscle Fibers Secondarily Evolved For Aerobic Locomotor Function, Kristin M. Hardy, Bruce R. Locke, Marilia Da Silva, Stephen T. Kinsey
Biological Sciences
The muscles that power swimming in the blue crab, Callinectes sapidus, grow hypertrophically, such that in juvenile crabs the cell diameters are
Lassen Volcanic National Park Small Vertebrate Inventory Project: Preliminary Results 2000-2004, John D. Perrine
Lassen Volcanic National Park Small Vertebrate Inventory Project: Preliminary Results 2000-2004, John D. Perrine
Biological Sciences
Biologists at Lassen Volcanic National Park in northern California conducted an inventory of non-flying small mammals, amphibians and reptiles from 2000 through 2004. The four primary habitat types in the park (brush, forest, riparian and subalpine) were each sampled at one high elevation and one mid-elevation site in the park. Each of the eight sites was sampled for four six-day periods between June and September each year using a combination of pitfall, Sherman and Tomahawk traps, coverboards and unbaited automatic camera stations. This effort yielded 12,150 captures and 776 photo detections. A total of 649 voucher specimens, representing 19 mammal, …
Characterizing The Resident, Fermentative Microbial Consortium In The Hindgut Of The Temperate-Zone Herbivorous Fish, Hermosilla Azurea (Teleostei: Kyphosidae), Pat M. Fidopiastis, Daniel J. Bezdek, Michael H. Horn, Judith S. Kandel
Characterizing The Resident, Fermentative Microbial Consortium In The Hindgut Of The Temperate-Zone Herbivorous Fish, Hermosilla Azurea (Teleostei: Kyphosidae), Pat M. Fidopiastis, Daniel J. Bezdek, Michael H. Horn, Judith S. Kandel
Biological Sciences
The zebraperch, Hermosilla azurea Jenkins and Evermann, a warm-temperate marine fish species with a strictly macroalgal diet, has a relatively long digestive tract with an enlarged hindgut and an associated blind caecum (HC). In zebraperch sampled off Santa Catalina Island, California (33°19′42′′N; 118°18′37′′W) in years 1995 through 2001, direct cell counts, gut epithelium assessment of bacterial attachment, and short-chain fatty acid (SCFA) analyses verified that the zebraperch HC possesses a dense and morphologically diverse, fermentative microbiota. Bacterial cell counts and morphological diversity were significantly higher in HC contents compared to anterior gut regions, suggesting that microbial populations were growing along …
Phytoremediation: An Affordable Green Technology For The Clean-Up Of Metal-Contaminated Sites In Sri Lanka, Nishanta Rajakaruna, Kathleen M. Tompkins, Peter G. Pavicevic
Phytoremediation: An Affordable Green Technology For The Clean-Up Of Metal-Contaminated Sites In Sri Lanka, Nishanta Rajakaruna, Kathleen M. Tompkins, Peter G. Pavicevic
Biological Sciences
Phytoremediation, the use of plants to remediate sites contaminated with organic and inorganic pollutants, and phytomining, the technology involved in extracting the pollutants removed for commercial purposes, are rapidly-growing industries with multi-million dollar markets. This solar-driven, green technology is oftenfavored over more conventional methods of clean-up due to its low cost, low impact, and wider public acceptance. In this paper we discuss phytoremediation as a valid alternative for remediating contaminated bodies of soils and water in developing countries like Sri Lanka, where clean-up can often be stalled due to the high costs associated with traditional remediation technologies. While phytoremediation techniques …
Effects Of A Marginal Zinc Diet On Intestinal Health And Immune Function, Daniel G. Peterson, James P. Mcclung, Angus G. Scrimgeour, Elizabeth A. Koutsos
Effects Of A Marginal Zinc Diet On Intestinal Health And Immune Function, Daniel G. Peterson, James P. Mcclung, Angus G. Scrimgeour, Elizabeth A. Koutsos
Animal Science
Zinc (Zn) is an essential nutrient for overall health and proper immune function, especially within the digestive system, although the specific mechanisms by which it exerts these effects are not well understood. In this study we examined the effects of short term exposure to a marginal Zn diet on the intestinal health and immune function of lipopolysaccharide (LPS) challenged mice through plasma cytokine profiling and histologic evaluation of intestinal tissue sections. Adult male mice were fed a Zn-adequate (30 ppm) or Zn-marginal (3 ppm) diet for 4 wk and then a bacterial challenge was simulated with an intraperitoneal injection of …
You Have A Right To Information, Theodore P. Hill
You Have A Right To Information, Theodore P. Hill
Research Scholars in Residence
Academic freedom protects professors from institutional censorship or discipline when they exercise their basic rights as citizens. One of those rights is that to examine official documents to see how public funds are spent and learn how decisions are made. The Freedom of Information Act (FOIA) guarantees this right for federal records; open-records or “sunshine” laws do so for state records.
A New Look At Industrial Sales And Its Requisite Competencies, Clifford S. Barber, Brian C. Tietje
A New Look At Industrial Sales And Its Requisite Competencies, Clifford S. Barber, Brian C. Tietje
Marketing
Although industrial sales is widely discussed in both practitioner and academic circles, no clear definition of “industrial” has been established. We present a definition of industrial sales that distinguishes it from other sales domains, and we draw from a panel of industrial sales executives and a random sample of industrial sales managers to generate and evaluate the importance of a comprehensive list of knowledge, skills, and value competencies that are required for success in industrial sales. Technical competencies, while important, were rated relatively less so than selling- and customer-related competencies. Among other recommendations, we implore industrial sales executives to incorporate …
Interrelationships Among Language Skills, Externalizing Behavior, And Academic Fluency And Their Impact On The Academic Skills Of Students With Ed, J. Ron Nelson, Gregory J. Benner, Stern Neill, Scott A. Stage
Interrelationships Among Language Skills, Externalizing Behavior, And Academic Fluency And Their Impact On The Academic Skills Of Students With Ed, J. Ron Nelson, Gregory J. Benner, Stern Neill, Scott A. Stage
Marketing
There is growing interest in understanding the factors that influence the academic achievement of students with emotional disturbance (ED). Structural equation modeling was used to test the interrelationships among language skills, externalizing behavior, and academic fluency and their impact on the academic skills of students with ED. Results showed that language skills exerted a significant proximal effect and distal effect on academic skills.The effect of language skills was mediated through academic fluency (path coefficient = .389) but also had a proximal effect on academic skills (path coefficient = .359). However, externalizing behavior failed to have a statistically significant effect on …
The Assessment Of Teaching, Allen C. Estes, Ronald W. Welch, Stephen J. Ressler
The Assessment Of Teaching, Allen C. Estes, Ronald W. Welch, Stephen J. Ressler
Architectural Engineering
The role of the teacher in the classroom carries tremendous responsibility. A group of students that can range from a half-dozen to several hundred depend on their professor to provide structure to a body of knowledge, to guide the learning process, to convey difficult subjects in a clear manner, to lead the classroom and out-of-class activities so that student time is used efficiently, and to provide a course of instruction in which the students can successfully complete the learning objectives. And somehow, the teacher is expected to establish some rapport with these students along the way. How does the teacher …
"Tilt-Up Building" And "Tilt-Up Wall Panel With Openings", John W. Lawson
"Tilt-Up Building" And "Tilt-Up Wall Panel With Openings", John W. Lawson
Architectural Engineering
No abstract provided.
Ubc 97 And Aci 318-02 Code Comparison - Summary Report, Chukwuma Ekwueme, John Lawson, Mehran Pourzanjani, James S. Lai, Bob Lyon
Ubc 97 And Aci 318-02 Code Comparison - Summary Report, Chukwuma Ekwueme, John Lawson, Mehran Pourzanjani, James S. Lai, Bob Lyon
Architectural Engineering
Introduction
Recognizing there have been questions on the differences between the alternate slender wall design procedures in 1997 UBC and in ACI 318-02, the SEAOSC Board authorized a Task Group to provide a comprehensive review of the two design procedures. The ACI procedure was adopted by IBC 2000 and subsequent code editions. As quoted in ACI 318R-02 Commentary Section R14.8, Section 14.8 is based on the corresponding requirements in the UBC and experimental research of the Test Report by SCCACI-SEAOSC.
This summary report includes review of source documents, code comparison, and background of the design provisions under UBC and under …