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排序方式: 共有162条查询结果,搜索用时 93 毫秒
61.
Alon Ben-Gal Eviatar Ityel Lynn Dudley Shabtai Cohen Uri Yermiyahu Eugene Presnov Leah Zigmond Uri Shani 《Agricultural Water Management》2008,95(5):587-597
Maximization of crop yields when the salinity of irrigation water is high depends on providing plant transpiration needs and evaporative losses, as well as on maintaining minimum soil solution salinity through leaching. The effect of the amount of applied irrigation water was studied regarding transpiration, yields, and leaching fractions as a function of irrigation water salinity. Bell pepper (Capsicum annum L. vars. Celica and 7187) in protected growing environments in the Arava Valley of Israel was used as a case study crop to analyze water quantity–salinity interactions in a series of lysimeter, field and model simulation experiments. Leaching fraction was found to be highly influenced by plant feedback, as transpiration depended on root zone salinity. Increased application of saline irrigation water led to increased transpiration and yields. The higher the salinity level, the greater the relative benefit from increased leaching. The extent of leaching needed to maximize yields when irrigating with saline water may make such practice highly unsustainable. 相似文献
62.
J.M. Levine G.T. Fosgate A.V. Chen R. Rushing P.P. Nghiem S.R. Platt R.S. Bagley M. Kent D.G. Hicks B.D. Young S.J. Schatzberg 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2009,23(6):1220-1226
Background: Magnetic resonance imaging (MRI) is a correlate to physical examination in various myelopathies and a predictor of functional outcome.
Objectives: To describe associations among MRI features, neurological dysfunction before MRI, and functional outcome in dogs with disk herniation.
Animals: One hundred and fifty-nine dogs with acute thoracolumbar disk herniation.
Methods: Retrospective case series. Signalment, initial neurological function as assessed by a modified Frankel score (MFS), and ambulatory outcome at hospital discharge and >3 months (long-term) follow-up were recorded from medical records and telephone interview of owners. Associations were estimated between these parameters and MRI signal and morphometric data.
Results: Dogs with intramedullary T2W hyperintensity had more severe pre-MRI MFS (median 2, range 0–4) and lower ambulatory proportion at long-term follow-up (0.76) than those dogs lacking hyperintensity (median MFS 3, range 0–5; ambulatory proportion, 0.93) ( P =.001 and .013, respectively). Each unit of T2W length ratio was associated with a 1.9 times lower odds of long-term ambulation when adjusted for pre-MRI MFS (95% confidence interval 1.0–3.52, P =.05). Dogs with a compressive length ratio >1.31 (which was the median ratio within this population) had more severe pre-MRI MFS (median 3, range 0–5) compared with those with ratios ≤1.31 (median MFS 3, range 0–4; P =.006).
Conclusions and Clinical Importance: MRI features were associated with initial injury severity in dogs with thoracolumbar disk herniation. Based on results of this study, the T2W length ratio and presence of T2W intramedullary hyperintensity appear to be predictive of long-term ambulatory status. 相似文献
Objectives: To describe associations among MRI features, neurological dysfunction before MRI, and functional outcome in dogs with disk herniation.
Animals: One hundred and fifty-nine dogs with acute thoracolumbar disk herniation.
Methods: Retrospective case series. Signalment, initial neurological function as assessed by a modified Frankel score (MFS), and ambulatory outcome at hospital discharge and >3 months (long-term) follow-up were recorded from medical records and telephone interview of owners. Associations were estimated between these parameters and MRI signal and morphometric data.
Results: Dogs with intramedullary T2W hyperintensity had more severe pre-MRI MFS (median 2, range 0–4) and lower ambulatory proportion at long-term follow-up (0.76) than those dogs lacking hyperintensity (median MFS 3, range 0–5; ambulatory proportion, 0.93) ( P =.001 and .013, respectively). Each unit of T2W length ratio was associated with a 1.9 times lower odds of long-term ambulation when adjusted for pre-MRI MFS (95% confidence interval 1.0–3.52, P =.05). Dogs with a compressive length ratio >1.31 (which was the median ratio within this population) had more severe pre-MRI MFS (median 3, range 0–5) compared with those with ratios ≤1.31 (median MFS 3, range 0–4; P =.006).
Conclusions and Clinical Importance: MRI features were associated with initial injury severity in dogs with thoracolumbar disk herniation. Based on results of this study, the T2W length ratio and presence of T2W intramedullary hyperintensity appear to be predictive of long-term ambulatory status. 相似文献
63.
Johnston DE 《Journal of the American Veterinary Medical Association》2006,228(5):687-8; discussion 688
64.
Vincristine Therapy for Mast Cell Tumors in Dogs 总被引:1,自引:0,他引:1
Dudley L. McCaw Margaret A. Miller Philip J. Bergman Stephen J. Withrow Antony S. Moore Deborah W. Knapp David Fowler Jane C. Johnson 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1997,11(6):375-378
Twenty-seven dogs with naturally occurring mast cell tumors were treated with weekly IV injections of vincristine (0.75 mg/m2 ) for 4 treatments. Two dogs (7%) had a partial response. Nine dogs (32%) had treatment stopped prematurely because of toxicity or a perceived deterioration in their quality of life. We conclude that vincristine is ineffective as a sole treatment for measurable mast cell tumors in dogs and produces an undesirable number of adverse reactions. 相似文献
65.
An epornitic of fowl cholera involving turkey flocks of several farms within a 15-mile radius in Utah was studied. Pasteurella multocida strains isolated from birds in affected flocks were antigenically characterized as A:1, A:3, and B:4, based on capsular sero-grouping and somatic serotyping results. Experimental exposure of poults with each of two strains representing the rarely reported capsular group B indicated that both were virulent. 相似文献
66.
The Effect of Experimental Cystitis and Iatrogenic Blood Contamination on the Urine Protein/Creatinine Ratio in the Dog 总被引:1,自引:0,他引:1
Rodney S. Bagley DVM Sharon A. Center DVM Robert M. Lewis DVM PhD Sang Shin DVM Susan A. Dougherty DVM John F. Randolph DVM Hollis Erb DVM PhD 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1991,5(2):66-70
The effect of experimentally induced cystitis and iatrogenic blood contamination on the urine protein/creatinine ratio (U P/C) was evaluated in 17 dogs. Before they were included in the study, all dogs were judged to be healthy on the basis of physical examination, serum concentrations of urea nitrogen and creatinine, complete urinalysis, and a U P/C less than 0.4. A single urine sample was contaminated with increasing quantities of canine fresh whole blood (PCV = 42%; total protein = 6.2 g/dl). When added blood was equal to or greater than 25% of the total urine sample volume, the U P/C exceeded 3.5, a finding consistent with nephrotic range proteinuria. When added blood was 10% of the total urine sample volume, the U P/C was less than 1.8. Eleven Beagles underwent routine laparotomy during which a cystotomy was done. The median U P/Cs on postoperative days 1 and 2 were significantly increased compared with preoperative values (P less than 0.05); no U P/C exceeded 2.0. Renal biopsies performed on postoperative day 3 eliminated renal proteinuria as a source of urine protein. Five dogs had bacterial cystitis experimentally induced. At 72 and 96 hours after bacterial inoculation, the median U P/Cs were significantly increased (P less than 0.05); individual values ranged from 1.5 to 40.8. Renal biopsies performed between 5 and 6 days after inoculation eliminated renal proteinuria as a source of urine protein. Cytologic evaluation of urine sediment in each group did not correlate with the magnitude of the increase in the U P/C. The U P/C significantly increased in each model of lower urinary tract inflammation.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
67.
Two cases of canine urinary bladder carcinoma were treated with combined radiation and cisplatin. Total radiation dose was 4400 cGy for one dog and 4800 cCy for the other. Cobalt 60 radiation was fractioned using 400 cGy per fraction. Cisplatin was administered intraarterially at a dose of 50 mg/m2 divided equally six to seven hours before the first three radiation fractions. Cisplatin was administered before the last three radiation fractions at the same dose and time, but was infused intravenously. Objective evaluation using double contrast cystograms revealed reduction in tumor size in both dogs. The therapy was well-tolerated with minimal side effects. 相似文献
68.
Balmford A Bennun L Brink BT Cooper D Côte IM Crane P Dobson A Dudley N Dutton I Green RE Gregory RD Harrison J Kennedy ET Kremen C Leader-Williams N Lovejoy TE Mace G May R Mayaux P Morling P Phillips J Redford K Ricketts TH Rodríguez JP Sanjayan M Schei PJ van Jaarsveld AS Walther BA 《Science (New York, N.Y.)》2005,307(5707):212-213
69.
70.
Branner JC Jenkins OP Anderson MB Stillman JM Sanford F Marx CD Gilbert CH Campbell DH Flügel E Wing CB Angell F Dudley WR Murray AT Goebel J Abbott N Matzke JE Richardson GM Griffin JO Miller W Green RL Elliott OL Kellogg VL Lenox LR Newcomer AG Clark AB McFarland FM Copeland CA Price GC Fish JC Nash HC Cubberley EP Marx GH Clark GA Hall JP Johnston OM Peirce GJ Stearns HD 《Science (New York, N.Y.)》1901,13(332):751-753