Search Results
Results 451 - 500 of 954
< 5 6 7 8 9 10 11 12 13 14 15 >
Orizaola, German - - 2009
Understanding the factors that affect the process of metamorphosis in species with complex life cycles, and in particular their variation within and among populations, has been rarely explored until recently. We examined the effects of temperature environment on several metamorphic characteristics in three populations of the pool frog (Rana lessonae ...
Hasler, Caleb - - 2009
Although locomotory performance in vertebrates is related to fitness, most performance tests are conducted in a laboratory setting, or in a manner that forces the organism to move not of their own volition. Biotelemetry offers the possibility to measure voluntary activity in a natural setting and provides the opportunity to ...
Howard, Richard - - 2009
Sexual dimorphism results when the sexes differ in the degree to which trait elaboration confers a reproductive or survival advantage. Trait size dimorphism is often reported in terms of allometry, typically using adults of varying ages (static allometry). A static allometric analysis of tail length in breeding tiger salamanders (Ambystoma ...
Whiteley, A.R. - - 2009
Previous work has demonstrated that genomic incompatibilities work together with ecologically divergent selection to promote and maintain reproductive isolation between incipient species (dwarf and normal) of lake whitefish (Coregonus clupeaformis (Mitchill, 1818)). Whitefish spawn in groups with external fertilization, which creates conditions for strong sperm competition. In this study, we ...
Kager, T. - - 2009
Edible dormice (Glis glis (L., 1766)) display strong annual variation in their reproductive output that is closely related to resource availability, commonly measured through the quantity of seeds produced by their most important food provider, the European beech (Fagus sylvatica L.). Dormouse mating takes place several weeks before beech seeds ...
Servais, Pierre - - 2009
Approved methods traditionally used for Escherichia coli enumeration in waters are culture-based. However, these methods can underestimate the E. coli abundance in aquatic systems because they do not take into account cells that remain viable but have lost the ability to grow in or on culture media. We investigated, in ...
Coats, Vanessa - - 2009
Frankia strain CcI3 produces 2 truncated hemoglobins, HbN and HbO. Using ion-exchange chromatography, we characterized the expression of the relative amounts of HbN and HbO in -N (nitrogen-fixing) cultures and +N (nitrogen-supplemented) cultures. The -N cultures maintained an approximately constant ratio of HbO to HbN throughout the life of the ...
Xin, Hai-ming - - 2009
Dendritic cells are specialized antigen-presenting cells that regulate immunity and tolerance. Chemokine receptor 7 (CCR7), which is expressed by mature dendritic cells, mediates the migration of the cells to secondary lymphoid organs and thus regulates immune responses. It has been demonstrated that immature dendritic cells can induce immune tolerance, but ...
Pitkanen, Tarja - - 2009
An enhanced enrichment using the Portable Microbe Enrichment Unit (PMEU) with the microaerobic bubbling of broths was applied for the detection of thermotolerant Campylobacter species from water. This PMEU enrichment was compared with the conventional static enrichment of the international standard ISO 17995:2005. In addition, Campylobacter detection after enrichment using ...
Balestrazzi, Alma - - 2009
The aim of this study was the isolation and characterization of the culturable bacteria inhabiting the leaves of transgenic white poplars (Populus alba L. 'Villafranca') engineered with the StSy gene for the production of resveratrol-like compounds. Resveratrol glucosides are available in small amounts from natural sources or by expensive chemical ...
Wu, Xiu-Juan - - 2009
The diversity of sulfate-reducing bacteria (SRB) in the aquifer underlying the Laogang Landfill along the shore of the East China Sea was investigated. The DNA extracted from 15 groundwater samples was subjected to PCR amplification of the dissimilatory sulfite reductase (dsr) gene. Full-length dsrAB amplicons (~1.9 kb) were then used ...
Prince, Veronique - - 2009
The headbox water is the main source of bacterial contamination of paper machines. Identification of these bacterial contaminants could be an asset in developing specific control methods. An amplified ribosomal DNA restriction analysis (ARDRA) was carried out to characterize the bacterial communities associated with the headbox water of a paper ...
O'Connor, Patrick - - 2009
A systematic application of the fungicide benomyl was used to follow up the suppression of arbuscular mycorrhizal (AM) colonization and to determine its fungitoxic activity and persistence at different depths. Repeated applications of benomyl reduced AM colonization mainly in the upper 0-4 cm layer of the treated soils. Furthermore, AM ...
Xie, Jia - - 2009
Rhizobium leguminosarum is well known for its ability to fix nitrogen (N). In addition, its capacity to solubilize phosphate (Ph) has been receiving attention in recent years. Our ultimate objective was to select a R. leguminosarum bv. viciae isolate with superior Ph-solubilizing ability. The first step was to identify a ...
Cafrune, Patricia - - 2009
A prospective study was designed to evaluate the clinical usefulness of spoligotyping applied directly to sputum samples. Patients suspected of having tuberculosis were recruited at the Hospital Sanatorio Partenon in Porto Alegre, Brazil. Of the 197 samples included in the analysis, 175 (88.8%) yielded a spoligotyping result that fully matched ...
Prabha, Vijay - - 2009
Staphylococcus aureus isolated from the cervix of an infertile woman was found to cause complete immobilization of human spermatozoa in vitro. Only the cell culture and cell-free supernatant showed immobilization activity, indicating that the sperm immobilization factor might be released extracellularly by the organism because no activity was observed with ...
Min, Sheng - - 2009
Salt stress has become a severe global problem, and salinity is one of the most important abiotic factors limiting plant growth and yield. It is known that arbuscular mycorrhizal (AM) fungi decrease plant yield losses under salinity. With the aim of determining whether AM inoculation would give an advantage to ...
Osono, Takashi - - 2009
The altitudinal distribution of microfungi associated with Betula ermanii Cham. leaf litter was investigated on Mt. Rishiri (1719 m), northern Japan. Fallen leaves were collected at five sites of different altitudes (appoximately 300, 600, 900, 1200, and 1500 m above sea level) along a transect on the northern slope of ...
Matias, Fernanda - - 2009
Polyhydroxyalkanoates (PHAs) are biodegradable and renewable polymers produced by a wide range of bacterial groups. New microbial bioprospection approaches have become an important way to find new PHA producers and new synthesized polymers. Over the past years, bacteria belonging to actinomycetes group have become known as PHA producers, such as ...
Yuanyuan, Wu - - 2009
Deinococcus radiodurans (ex Raj et al. 1960) Brooks and Murray 1981 is well known for its efficient repair of various types of physically or chemically induced DNA damage caused by ionizing and ultraviolet radiation or [H.sub.2][O.sub.2]. RecG codes for a helicase that is known to be involved in repairing oxidative ...
Beltran-Garcia, Miguel - - 2009
Mycosphaerella fijiensis causes black leaf streak disease in banana and plantain. This fungus is usually attacked by reactive oxygen species secreted by the plant or during exposure to fungicide, however, little is known about the antioxidant response of the fungus. In this study, mycelia were observed to totally decompose 30 ...
Lopes, Christian - - 2009
Pichia guilliermondii can produce volatile phenols in the initial stages of wine fermentation; however, its response to different wine stress conditions has been poorly studied. In this work, we present an analysis of the response of 23 P. guilliermondii indigenous isolates to physical and chemical wine stress factors and to ...
Aniebue, P.N. - - 2009
Background. Long-distance truck drivers (LDTDs) are exposed to high-risk sexual behaviour because of the nature of their work and are at high risk for HIV acquisition. Assessing their sexual practices and condom use is an important step in HIV/AIDS prevention in this target group.
van Deventer, - - 2009
The importance of adherence in the management of patients on combination antiretroviral therapy has been well documented. (1-6) However, for sustainability of the overall programme adequate patient 'tracking' is required in order to understand where the programme may be failing.
Firnhaber, Cynthia - - 2009
Globally cervical cancer is one of the commonest cancers in women. It comprises approximately 12% of all cancers and is the commonest cancer in women in developing countries. The most recent compilation of global data indicates that an estimated 490 000 new cases of cervical cancer occur annually worldwide and ...
von Mollendorf, - - 2009
Health care providers are faced with a number of challenges with regard to acute HIV infection. The first of these is recognition, because the acute retroviral symptoms mimic a number of other viral infections. The second challenge is treatment, as treating early HIV has a number of benefits and risks ...
Price, Leigh - - 2009
Language mechanisms in much HIV discourse insist that a Western-based moralism dominates. These mechanisms include the use of strategic absences of information about the moral grounding of texts, and slippages of meaning where one word is used to refer to many meanings. A common slippage of meaning is use of ...
- - 2009
Strode, Ann - - 2009
Children (persons under 18) are a vulnerable group and require legal protection because of their youth and inexperience. (1) As a result, various provisions in the law ensure the care and protection of children through mechanisms such as mandatory reporting obligations, which generally require persons in positions of authority, in ...
Francois - - 2009
Bekker, Linda-Gail - - 2009
Manning, Liz - - 2009
This article presents the findings of a study describing Clinical Nurse Educators' experiences, as they recall their transition from staff nurse (1) to the Clinical Nurse Educator role, within a New Zealand District Health Board. Nurse Educator roles influence clinical practice and professional development of nurses, and although designated as ...
MacKay, Bev - - 2009
Lecturer support for nursing students in clinical placements is essential to assist students in consolidating their clinical experience and making links between theory and practice. The primary health care context poses challenges different from those of secondary or tertiary clinical settings. To deal with these challenges in primary health care ...
Jamieson, Isabel - - 2009
Many nurses leave nursing and never return. Others return after a period of time. Given the global shortage of nurses a better understanding of these movements is needed. The present study focused on nurses who had been out of nursing for more than five years, and explored factors that influenced ...
Connor, Margaret - - 2009
Health Reporoa Inc. offers a first contact rural nursing service to the village of Reporoa and surrounding districts. From 2003 to 2006 it became a project site through selection for the Ministry of Health (MoH) primary health care nursing innovation funding. Health Reporoa Inc. successfully achieved its project goals and ...
Smith, Tina - - 2009
Myer, Gregory - - 2009
Purpose: To employ retrospective trend analysis in an attempt to provide a layered description of the relative contribution (per credential) of clinical athletic trainers (those without terminal degrees) to authoring scientific literature in the Journal of Athletic Training (JAT). From these data, our secondary purpose was to evaluate trends relative ...
Torres-McGehee, Toni - - 2009
Context: Medical professionals have recognized eating disorders and related problems in competitive athletes. Auxiliary members (color guard, dance, majorettes) experience the same appearance-related pressures observed in sports commonly associated with eating disorders.
Monsma, Eva - - 2009
Context: The use of sport-specific imagery during rehabilitation is sparse. Athletes who used imagery (either facilitative or debilitative) during injury rehabilitation were compared with injured athletes who did not use imagery. Return-to-practice anxiety in the groups was investigated also.
Hunt, Tamerah - - 2009
Context: Clinicians have questioned the need to obtain annual baseline neuropsychological tests in high school athletes. If no difference among academic grades exists, annual baseline testing may not be necessary.
Covassin, Tracey - - 2009
Context: Various consensus and position statements recommend a multifaceted approach when diagnosing a possible concussion. The effectiveness of these materials depends largely on their content being disseminated to educators and to those in the clinical setting.
Henry, Kevin - - 2009
Context: Academic programs rely on outcomes assessments to determine if changes in the curriculum are necessary.
Neibert, Peter - - 2009
Objective: To discover the theoretic constructs that confirm, disconfirm, or extend the principles and their applications appropriate for National Athletic Trainers' Association (NATA)-accredited postprofessional athletic training education programs.
Giacobbi, Peter R., - - 2009
Objective: To assess the prevalence of occupational burnout, engagement, and somatic health complaints and the associations among these constructs experienced by certified athletic trainers (ATs). A secondary objective was to examine differences between men and women, those with more versus less postcertification experience, and ATs who worked in different occupational ...
< 5 6 7 8 9 10 11 12 13 14 15 >