Magnetization transfer and diffusion tensor imaging in dogs with intervertebral disk herniation     

Richard L. Shinn  Theresa E. Pancotto  Krystina L. Stadler  Stephen R. Werre  John H. Rossmeisl 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(6):2536-2544

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Amino acid composition of freshly harvested and stored potatoes     

E. A. Talley  R. B. Toma  P. H. Orr 《American Journal of Potato Research》1984,61(5):267-279

Total amino acid contents of several important U.S. potato cultivars grown in Maine, Idaho and The Red River Valley are listed along with nitrogen content. Differences in amino acid content among cultivars were roughly proportional to differences in total nitrogen. The effect of storage on amino acids in two cultivars was minor. The limiting essential amino acids compared to egg were MET and the sulphur amino acids.  相似文献   

Bibliography the after-cooking discoloration of potatoes     

Eugene A. Talley  Mary V. Zaehringer  Roger M. Reeve  R. B. Hyde  Donald H. Dinkel  Edward G. Heisler  Russell Pressey 《American Journal of Potato Research》1969,46(8):302-312

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Chemical composition of potatoes. VIII. Effect of variety,location, and year of growth on the content of nitrogen compounds     

Eugene A. Talley  Thomas J. Fitzpatrick  William L. Porter 《American Journal of Potato Research》1970,47(7):231-244

Free amino acid content, total nitrogen, extractable nitrogen, ratio of extractable to total nitrogen, solids content, and specific gravity in Cobbler, Katahdin, Kennebec, Red Pontiac, and Russet Burbank potatoes was studied. Each variety was grown in six different locations (Idaho, Maine, Pennsylvania, Wisconsin, Long Island, and the Red River Valley) during the years 1961 through 1963. The mean values for each factor, with significant differences indicated, are listed along with the high and low range, the coefficient of variation and the overall mean. The percent of total variance contributed by each of the variables and their interactions also are listed. Long Island potatoes had the highest nitrogen and amino acid content. Varietal differences were less significant. Proline was the most variable of the constituents measured. Aspartic and glutamic acids had the highest variability with respect to years grown. The effect of each variable varies from one constituent to another.  相似文献   

Effects of Soil Type and Cover Condition on Cryptosporidium parvum Transport in Overland Flow     

Paul C. Davidson  Theresa B. Kuhlenschmidt  Rabin Bhattarai  Prasanta K. Kalita  Mark S. Kuhlenschmidt 《Water, air, and soil pollution》2014,225(3):1-12

Overland transport kinetics of pathogens is controlled, in large part, by soil and vegetation. With an increasing number of concentrated animal operations, there is becoming a greater need to dispose of a vast amount of manure in a single, localized area. Animal manure contains a substantial amount of microbial pathogens, including Cryptosporidium parvum that may pose a threat of contamination of water resources. This study examines the kinetics of C. parvum in overland transport and critical factors involved in the design of best management practices, especially vegetative filter strips, to prevent the transport of harmful pathogens to water bodies. Three soil types were tested (Catlin silt-loam, Alvin fine sandy-loam, Darwin silty-clay), spanning the entire spectrum of typical Illinois soils. A 20-min rainfall event was produced using a small-scale (1.07 m?×?0.66 m) laboratory rainfall simulator over a soil box measuring 0.67 m?×?0.33 m. Each soil type was tested for pathogen transport kinetics with bare surface conditions as well as with smooth brome and fescue vegetative covers. Surface runoff, soil cores, and near-surface runoff were each analyzed for infective C. parvum oocysts using cell culture infectivity assays. Results showed that vegetation greatly reduced the recovery of infective oocysts, in addition to delaying the time to the peak recovery. However, there was no clear evidence of any one vegetation type being advantageous over another. The bare soil experiments resulted in a higher recovery of C. parvum oocysts from the Darwin soil compared to other two soils. Analyses of soil cores show a slightly higher recovery of oocysts in the Catlin soil compared to Alvin or Darwin soils.  相似文献   

Applications and limitations of tea extract as a virucidal agent to assess the role of phage predation in soils   总被引：1，自引：0，他引：1  

Kaitlin R. Helsley  Theresa M. Brown  Kevin Furlong  Kurt E. Williamson 《Biology and Fertility of Soils》2014,50(2):263-274

In marine ecosystems, phage predation (phage-mediated cell lysis) is an important driver of bacterial mortality through host cell death and nutrient cycling through the release of cell contents. Both of these impacts increase marine microbial diversity by increasing interspecific competition. By contrast, very little is known about the role of phage predation in terrestrial ecosystems. A recent field study in Barrow, AK found phage predation to be a key factor controlling terrestrial bacterial population dynamics in Arctic soils. When phage abundance was artificially reduced using a tea extract, antiphage treatment, bacterial abundance, and respiration increased accordingly, suggesting top-down control by phages. The goal of this study was to examine the impact of phage predation in temperate soil ecosystems. Laboratory-scale experiments confirmed the potent antiphage properties of tea extracts. However, field experiments conducted at two discrete sites (upland and wetland) yielded little evidence that top-down control by phage predation was significant in temperate soils.  相似文献   

Root carbohydrates and aspen regeneration in relation to season of harvest and machine traffic     

Theresa L. Mundell  Simon M. LandhäusserVictor J. Lieffers 《Forest Ecology and Management》2008

Season of harvest has often been suggested as a driver for the erratic success of aspen (Populus tremuloides) sucker regeneration, partially due to root carbohydrate reserves and soil conditions at the time of harvest. A field experiment in western Manitoba, Canada, assessed root suckering and root carbohydrates of aspen in response to season of harvest and machine traffic. Six sites (120 m × 120 m) were selected within two large mature aspen stands slated for summer harvest. Plots (50 m × 50 m) were hand-felled (without machine traffic) in mid-summer, late summer, winter, and one plot was left uncut as a control. Season of cut with no traffic had no effect on sucker density, height or leaf dry mass per sucker. During the dormant season, root starch reserves were highest in the winter cut plots, however, just prior to suckering, this difference in carbohydrate reserves among the three seasons of harvest disappeared and by the end of the first growing season root reserves in all three seasons of cut had recovered to near control levels. Adjacent plots that were conventionally harvested in the summer and impacted by logging traffic had similar sucker densities but had 19% less height growth of suckers and 29% less leaf dry mass per sucker compared to suckers in plots harvested at the same time without traffic. After one growing season, root carbohydrate levels were similar whether or not machine traffic was used; however, the reduction in leaf dry mass in plots with machine traffic could have negative implications for carbohydrate accumulation and growth. The study suggests that the phenological state of the mature aspen plays a very small role in aspen regeneration and that harvesting practices and site conditions are likely the main drivers of aspen regeneration success.  相似文献   

Lymphedema: Etiopathogenesis     

Theresa W. Fossum DVM  MS  Matthew W. Miller DVM 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1992,6(5):283-293

Two main factors have impeded the progress of work on the lymphatic vessels…, namely lack of methods of investigation and lack of interest. The latter has been partly due to the paucity of efective therapeutic methods to deal with lymphatic vessel disorders.  相似文献   

IN VITRO EVALUATION OF CANINE GRANULOCYTES LABELED WITH ^99mTC-HEXAMETHYLPROPYLENEAMINE OXIME:     

Russell L.  Tucker  DVM  Gregory B.  Daniel  DVM  MS  Sandra L.  Daniel  DVM  MS  PhD  Theresa  Buckman  AHT 《Veterinary radiology & ultrasound》1992,33(4):241-246

Technetium-99m hexamethylpropyleneamine oxine (^99mTc-HMPAO) and Indium-111 oxine (¹¹¹In-oxine) labeled canine gramulocytes were evaluated in vitro over a six hour period. Labeling efficiency for ^99mTC-HMPAO and ¹¹¹In-oxine labeled granulocytes was 39.6%± 8.0% and 60.6%± 17.6% (mean ± SD) respectively. The mean in vitro elution of the radiolabel ranged from 8.7-14.0% for the ^99mTc-HMPAO grannulocytes and from 6.1-9.0% for the ¹¹¹In-oxine granulocytes. Mean cell viability, for the ^99mTc-HMPAO, ¹¹¹In-oxine and non-radiolabeled control granulocytes ranged from 97.8-99.4%, 96.4-98.5% and 98.2-99.0%, respectively. The phagocytic ability of the ^99mTc-HMPAO, ¹¹¹In-oxine and control granulocytes ranged from 47.5-54.1%, 38.9-56.2% and 46.6-57.8% respectively over the six hour study period. Although labeling efficiency using ¹¹¹In-oxine was significantly (P=0.05) better than ^99mTc-HMPAO, there was no significant difference in label retention of the two radiolabels. There was no significant difference in viability or phagocytic function during the six hour study period. Considering the potential cost advantage and the superior imaging qualities of Technetium-99m relative to Indium-111, ^99mTc-HMPAO appears to be a good alternative to ¹¹¹In-oxine as a granulocyte label.  相似文献   

Invasive Pasteurella multocida Infections – Report of Five Cases at a Minnesota Hospital, 2014          下载免费PDF全文

P. Talley  P. Snippes‐Vagnone  K. Smith 《Zoonoses and public health》2016,63(6):431-435

During October 2014, the Minnesota Department of Health was notified of five Hospital A patients with Pasteurella multocida bacteraemia; three had died. Human soft tissue infection with P. multocida typically results from cat or dog bites or scratches. Invasive infection, defined as a P. multocida isolate from a usually sterile site, is rare. We evaluated P. multocida isolations at Hospital A, compared with other Minnesota hospitals to understand invasive infection trends. A case was defined as clinically confirmed P. multocida in a Minnesota resident during 2012–2014. All hospital laboratories were queried; Fisher's exact test was used for comparison. Medical charts were reviewed for 2014 Hospital A patients with P. multocida infections. The Minnesota clinical laboratories survey response rate was 79% (63/80). At Hospital A, proportion of P. multocida isolates from usually sterile sites increased from 0% (0/2) during 2012 to 11% (1/9) during 2013, and to 86% (5/6) during 2014. The proportion of patients with P. multocida isolated from sterile sites was 35% (6/17) at Hospital A compared with 10% (58/583) statewide during 2012–2014 combined (P < 0.05). Among 2014 Hospital A patients with invasive P. multocida infection, all five were men; median age was 70 (range: 44–78) years. Four were temporally clustered within a 33‐day period; three of those had bacteraemia on admission, making hospital acquisition possible in only one. Among five bacteraemia patients, four had cirrhosis and/or skin ulcerations, and three died. The proportion of invasive P. multocida cases was substantially higher at Hospital A during 2014. No epidemiologic links between patients were found. Three had known pet exposure. Collaborative educational efforts of chronically ill pet owners by physicians and veterinarians can acknowledge the health benefits of pet ownership, while minimizing risk for serious invasive zoonotic infections, including those caused by P. multocida.  相似文献