Daily rhythms in plasma levels of homocysteine     

Lavie L  Lavie P 《Journal of circadian rhythms》2004,2(1):5

Background  

There is accumulated evidence that plasma concentration of the sulfur-containing amino-acid homocysteine (Hcy) is a prognostic marker for cardiovascular morbidity and mortality. Both fasting levels of Hcy and post methionine loading levels are used as prognostic markers. The aim of the present study was to investigate the existence of a daily rhythm in plasma Hcy under strictly controlled nutritional and sleep-wake conditions. We also investigated if the time during which methionine loading is performed, i.e., morning or evening, had a different effect on the resultant plasma Hcy concentration.  相似文献   

The effect of extension and loading of the carpus on radial rotation     

Erez Bitton DVM  Rotem Joseph DVM  Diplomate ECVS  Lena Portman BSc  Gilad Segev DVM  Diplomate ECVIM‐CA  Yaron Meiner BSc ME  Anna Shipov DVM  Diplomate ECVS  Joshua Milgram BVSc  Diplomate ECVS 《Veterinary surgery : VS》2013,42(8):909-917

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Individual and combined effects of pre- and post-anthesis temperature on protein composition of two malting barley cultivars     

Ali Hafeez Malik  Lena Holm  Ramune Kuktaite  Allan Andersson 《Journal of Cereal Science》2013

The present study has investigated the individual and combined influence of pre- and post-anthesis temperatures and cultivars on the protein composition in barley grains. Two barley cultivars were grown in soil and hydroponic systems in daylight chambers with different pre- and post-anthesis temperatures. Size exclusion (SE)-HPLC was used to evaluate the protein composition in mature barley grains. The results showed that individual and interactive effects of pre- and post-anthesis temperatures and cultivar variations influenced protein composition in the barley grains. Pre-anthesis temperature greatly affected the amounts of total sodium dodecyl sulphate (SDS) extractable proteins (TOTE) and explained 30% of the variation in TOTE. The barley cultivars accounted for 20% of the variation in TOTE. Variation in malting barley cultivars was found to influence the SDS extractable small monomers (41% of the variation). Percentage of SDS un-extractable polymeric proteins in total amount of polymeric proteins (%UPP) was governed by post-anthesis temperature, accounting for 11% of the variation and cultivar differences accounted for 7% of the variation. Thus, the climatic conditions during the specific growing period and a choice of cultivars played a major role in determining the protein composition and ultimately the malting quality of spring barley.  相似文献   

Variability of tocopherols,tocotrienols and avenanthramides contents in European oat germplasm     

Rita Redaelli  Lena Dimberg  Christoph U. Germeier  Nicola Berardo  Sabrina Locatelli  Lorenzo Guerrini 《Euphytica》2016,207(2):273-292

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Performance of honey bee colonies under a long‐lasting dietary exposure to sublethal concentrations of the neonicotinoid insecticide thiacloprid          下载免费PDF全文

Reinhold Siede  Lena Faust  Marina D Meixner  Christian Maus  Bernd Grünewald  Ralph Büchler 《Pest management science》2017,73(7):1334-1344

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The utility of the ‘Arable Weeds and Management in Europe’ database: Challenges and opportunities of combining weed survey data at a European scale     

Helen Metcalfe  Jana Bürger  Christoph von Redwitz  Alicia Cirujeda  Silvia Fogliatto  Denise F. Dostatny  Bärbel Gerowitt  Michael Glemnitz  José L. González-Andújar  Eva Hernández Plaza  Jordi Izquierdo  Michaela Kolářová  Jevgenija Ņečajeva  Sandrine Petit  Gyula Pinke  Matthias Schumacher  Lena Ulber  Francesco Vidotto  Guillaume Fried 《Weed Research》2023,63(1):1-11

Over the last 30 years, many studies have surveyed weed vegetation on arable land. The ‘Arable Weeds and Management in Europe’ (AWME) database is a collection of 36 of these surveys and the associated management data. Here, we review the challenges associated with combining disparate datasets and explore some of the opportunities for future research that present themselves thanks to the AWME database. We present three case studies repeating previously published national scale analyses with data from a larger spatial extent. The case studies, originally done in France, Germany and the UK, explore various aspects of weed ecology (community composition, management and environmental effects and within-field distributions) and use a range of statistical techniques (canonical correspondence analysis, redundancy analysis and generalised linear mixed models) to demonstrate the utility and versatility of the AWME database. We demonstrate that (i) the standardisation of abundance data to a common measure, before the analysis of the combined dataset, has little impact on the outcome of the analyses, (ii) the increased extent of environmental or management gradients allows for greater confidence in conclusions and (iii) the main conclusions of analyses done at different spatial scales remain consistent. These case studies demonstrate the utility of a Europe-wide weed survey database, for clarifying or extending results obtained from studies at smaller scales. This Europe-wide data collection offers many more opportunities for analysis that could not be addressed in smaller datasets; including questions about the effects of climate change, macro-ecological and biogeographical issues related to weed diversity as well as the dominance or rarity of specific weeds in Europe.  相似文献   

Central corneal thickness measurements and ultrasonographic study of the growing equine eye          下载免费PDF全文

Lena E. Herbig  J. Corinna Eule 《Veterinary ophthalmology》2015,18(6):462-471

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Clinical comparison of the TonoVet® rebound tonometer and the Tono‐Pen Vet® applanation tonometer in dogs and cats with ocular disease: glaucoma or corneal pathology          下载免费PDF全文

Lena von Spiessen  Julia Karck  Karl Rohn  Andrea Meyer‐Lindenberg 《Veterinary ophthalmology》2015,18(1):20-27

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South American camelids in Switzerland. I. Population, management and health problems     

Hengrave Burri I  Martig J  Sager H  Liesegang A  Meylan M 《Schweizer Archiv für Tierheilkunde》2005,147(8):325-334

At the beginning of 2000, a population of 1622 South American camelids in 257 herds was living in Switzerland. The origin of the animals, their age, the management systems, their feeding habits, their use as well as the observed medical conditions and the indications for treatment were assessed with a questionnaire. Results of this study show that 60% of the South American camelid population in Switzerland consisted of llamas (999 animals) and 40% of alpacas (623), and that females younger than 4 years of age made up the majority of the animals. South American camelids were predominantly kept for hobby, breeding or trekking. The most frequent health problems were related to the digestive tract, the skin, the eyes and the metabolism. Veterinarians were consulted for deworming, vaccinations, castrations or obstetric interventions. The parasitological examination of 204 fecal samples showed that llamas and alpacas were infested with the same endoparasites as ruminants (i.e. nematodes, trematodes and protozoas).  相似文献   

Evaluation of environmental and management-related risk factors associated with chronic mastitis in sows     

Hultén F  Persson A  Eliasson-Selling L  Heldmer E  Lindberg M  Sjögren U  Kugelberg C  Ehlorsson CJ 《American journal of veterinary research》2004,65(10):1398-1403

OBJECTIVE: To evaluate environmental and management-related risk factors associated with chronic mastitis in sows. ANIMALS: 1,254 sows from 76 herds. PROCEDURE: Prevalence of chronic mastitis was determined by a veterinarian who performed clinical examinations at the time of weaning and approximately 1 week later in a sample of the sow population on each farm. Information concerning environmental factors and management practices was collected. In addition, the herd veterinarian made an assessment of the farmer's skills in swine production. RESULTS: Use of partly slatted floors in the farrowing pens, use of disinfectants between batches in the farrowing and breeding areas, feeding lactating sows whey, and avoiding cutting or grinding of the piglets' teeth were significantly associated with a decreased risk of chronic mastitis. A high hygienic standard on the farm, as determined by the herd veterinarian, was associated with a significant reduction in the prevalence of mastitis. CONCLUSIONS AND CLINICAL RELEVANCE: Chronic mastitis in sows is a common disease that has a negative influence on productivity. Results indicate that certain management practices and environmental factors influenced the development of mastitis, which may contribute to the development of methods useful for controlling the disease.  相似文献