The Nature of the Iron Compounds in Red and Yellow Sandstone     

Hofer LJ  Weller S 《Science (New York, N.Y.)》1947,106(2759):470

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A serologic assessment of exposure to viral pathogens and Leptospira in an urban raccoon (Procyon lotor) population inhabiting a large zoological park.     

Randall E Junge  Karen Bauman  Melanie King  Matthew E Gompper 《Journal of zoo and wildlife medicine》2007,38(1):18-26

In urban environments, raccoons (Procyon lotor) may act as reservoirs for an array of pathogenic organisms, presenting spillover risks for human, domestic animal, and captive (zoo) animal populations. Over 5 yr, 159 raccoons from a high-density raccoon population in St. Louis, Missouri (USA), were surveyed for exposure to canine distemper virus (CDV), canine adenovirus 1 (CAV-1); feline parvovirus (FPV; =feline panleukopenia), and several serovars of Leptospira interrogans. Exposure to each of the viruses and two Leptospira serovars (grippotyphosa and icterohemorrhagiae) was detected (prevalence of CDV = 54.1%; FPV = 49.7%; CAV-1 = 6.9%; L. interrogans icterohemorrhagiae = 8.9%; L. interrogans grippotyphosa = 6.3%). Eighty percent of raccoons showed evidence of exposure to at least one of the five primary pathogens, and 39% were positive for multiple species. Among the viruses, there was a significant co-occurrence of CDV and CAV-1. Longitudinal data on a subset of animals revealed that among individuals who were diagnosed as seropositive on first capture, 33-100% became seronegative for the pathogen of interest when reexamined at a later date. Thus, free-ranging urban raccoons have been exposed to multiple infectious agents, some of which may pose risks to humans and to nonvaccinated domestic and captive animal populations.  相似文献   

Influenza A/equine 2: example for an atypical course in a group of 21 horses]     

B Hofer  F Steck 《Schweizer Archiv für Tierheilkunde》1976,118(8):319-324

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Spatial activity and expression of plasma membrane H+-ATPase in stem xylem of walnut during dormancy and growth resumption   总被引：1，自引：0，他引：1  

Alves G  Decourteix M  Fleurat-Lessard P  Sakr S  Bonhomme M  Améglio T  Lacointe A  Julien JL  Petel G  Guilliot A 《Tree physiology》2007,27(10):1471-1480

Plasma membrane H+-ATPase (PM H+-ATPase) plays a key role in nutrient transport, stress responses and growth. To evaluate proton motive force differences between apical and basal parts of acrotonic 1-year-old shoots of walnut (Juglans regia L. cv 'Franquette') trees, spatial and seasonal changes in PM H+-ATPase were studied in mature xylem tissues. During both the dormancy and growth resumption periods, and in both the apical and basal parts of the stem, PM H+-ATPase activity showed positive correlations with the amount of immunodetectable protein. In spring, at the time of growth resumption, higher activities and immunoreactivities of PM H+-ATPase were found in the apical part of the stem than in the basal part of the stem. In spring, the decrease in xylem sugar concentration reflected the high sugar uptake rate. Our data suggest that PM H+-ATPase plays a major role in the uptake of carbohydrates from xylem vessels during growth resumption. These results are discussed in the context of the acrotonic tendency of walnut shoots.  相似文献   

What is your diagnosis? Pituitary mass in a dog          下载免费PDF全文

Melanie S. Spoor  Christina J. Ramirez  Rob J. Daniel  Dan P. Shaw  Fred A. Wininger  Marlyn S. Whitney 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2016,45(2):381-382

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Seasonal and diurnal variation of downstream fish movement at four small-scale hydropower plants     

Josef Knott  Melanie Mueller  Joachim Pander  Juergen Geist 《Ecology of Freshwater Fish》2020,29(1):74-88

Hydropower structures hinder the movement and migration of fishes, impairing their life cycles. Additionally, downstream moving fish are often at risk of being injured during turbine passage. To improve hydropower production towards more fish-friendly techniques and management, knowledge on timing and extent of natural patterns of fish downstream movement is necessary. So far, migration behaviour of long-distance migrators such as eel or salmon has been well studied, but little is known about seasonal and diurnal movement patterns of nonmigratory species or medium-distance migrators. In this study, movement patterns of 39 fish species captured by stownets while transiting hydropower facilities in four impounded rivers were assessed and compared with the fish community composition directly upstream of the hydropower plants assessed by electrofishing. Strong differences between the fish community composition inhabiting the upstream sides of the dams and the fish detected in downstream passage were evident. In each study river, the downstream moving fish community composition differed significantly between spring and autumn. On average, significantly more fish were caught during the night (2.9 fish/hr) than during the day (1.3 fish/hr). Topmouth gudgeon, European grayling and pike-perch mostly moved downstream during the night, whereas roach, spirlin and bleak were the most frequent downstream moving fish during daytime. Downstream fish movement was positively related with turbidity, water temperature and discharge. The strong differences in seasonal and diurnal fish movement patterns suggest that fish damage can be strongly reduced by adaptive turbine and corridor management, for example by shutting down turbines at peak movements.  相似文献   

Transurethral cystoscopy in dogs with recurrent urinary tract infections: Retrospective study (2011-2018)     

Marie Llido  Catherine Vachon  Melanie Dickinson  Guy Beauchamp  Marilyn Dunn 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(2):790-796

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Ectomycorrhizae and tree seedling nitrogen nutrition in forest restoration     

B. J. Hawkins  Melanie D. Jones  J. M. Kranabetter 《New Forests》2015,46(5-6):747-771

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What is your diagnosis? Intra‐abdominal mass in a female spayed dog     

Melanie S. Spoor  Brian K. Flesner  Julie E. Trzil  Marlyn S. Whitney  Dan P. Shaw  Kim A. Selting 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2014,43(1):109-110

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Applying Bayesian network modelling to understand the links between on-farm biosecurity practice during the 2007 equine influenza outbreak and horse managers’ perceptions of a subsequent outbreak     

Simon M. Firestone  Fraser I. Lewis  Kathrin Schemann  Michael P. Ward  Jenny-Ann L.M.L. Toribio  Melanie R. Taylor  Navneet K. Dhand 《Preventive veterinary medicine》2014

Australia experienced its first ever outbreak of equine influenza in August 2007. Horses on 9359 premises were infected over a period of 5 months before the disease was successfully eradicated through the combination of horse movement controls, on-farm biosecurity and vaccination. In a previous premises-level case-control study of the 2007 equine influenza outbreak in Australia, the protective effect of several variables representing on-farm biosecurity practices were identified. Separately, factors associated with horse managers’ perceptions of the effectiveness of biosecurity measures have been identified.  相似文献