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91.
EFFECT OF ARTIFICIAL WEATHERING CYCLES ON THE STRUCTURAL STABILITY OF A DISPERSED SILT SOIL 总被引:1,自引:0,他引:1
S. J. RICHARDSON 《European Journal of Soil Science》1976,27(3):287-294
A very fine sandy loam soil was severely puddled in the laboratory and subjected to varying numbers of freeze/thaw-wet/dry cycles in an attempt to restore its original level of structural stability. After only three cycles the stability of the treated soil reached its maximum value, which was slightly greater than that of untreated soil collected from the field. A higher level of soil organic matter was accompanied by an increase in structural stability as determined by the dispersion ratio technique and a technique involving partial dispersion in Calgon. 相似文献
92.
M. W. ROSS dvm L. P. TATE vmd Diplomateacvs W. J. DONAWICK dvm Diplomateacvs D. W. RICHARDSON dvm Diplomateacvs 《Veterinary surgery : VS》1986,15(1):85-92
Fourteen horses with cecal impaction were treated by cecocolic anastomosis. In nine horses, the anastomosis followed enterotomy and evacuation of the cecal contents, and in two horses it followed saline infusion and massage of the cecum. In three horses, the anastomosis was the only surgical procedure performed. Cecocolic anastomosis was performed between the lateral and dorsal cecal teniae, and the lateral and medial free teniae of the right ventral colon. The anastomosis was hand sutured in five horses. In all other horses, the GIA surgical stapling instrument was used in combination with hand sutured seromuscular layer closures and became the preferred surgical technique. The anastomosis allowed an alternative route for the transit of ingesta from the cecum to the right ventral colon.
Twelve of the 14 horses survived 2 months or longer after surgery (short-term survival rate, 86%) and 10 horses survived 12 months or longer after surgery (long-term survival rate, 71%). Early postoperative complications included mild abdominal pain (6 horses), wound infections (3 horses), fatal peritonitis (2 horses), and large colon distention necessitating reoperation (2 horses). 相似文献
Twelve of the 14 horses survived 2 months or longer after surgery (short-term survival rate, 86%) and 10 horses survived 12 months or longer after surgery (long-term survival rate, 71%). Early postoperative complications included mild abdominal pain (6 horses), wound infections (3 horses), fatal peritonitis (2 horses), and large colon distention necessitating reoperation (2 horses). 相似文献
93.
Cathryn A. O'SULLIVAN Elliott G. DUNCAN Margaret M. ROPER Alan E. RICHARDSON John A. KIRKEGAARD Mark B. PEOPLES 《农业科学与工程前沿(英文版)》2022,9(2):177
94.
95.
JENNIFER M. COHEN VMD DEAN W. RICHARDSON DVM Diplomate ACVS ALEXIA L. MCKNIGHT DVM Diplomate ACVR MICHAEL W. ROSS DVM Diplomate ACVS RAYMOND C. BOSTON PhD 《Veterinary surgery : VS》2009,38(4):543-551
Objective— To (1) examine the outcome in horses with osteoarthritis or intra‐articular soft tissue injuries of the stifle after arthroscopic exploration and debridement and (2) to determine any imaging or surgical findings that may influence prognosis. Design— Case series. Animals— Horses (n=44) with lameness referable to the stifle, diagnosed with osteoarthritis, meniscal tears, or other intra‐articular soft tissue injuries based on arthroscopic examination. Methods— Medical records of horses with stifle lameness that had arthroscopic exploration were reviewed. Horses with osteochondrosis lesions, intra‐articular fractures, or osseous cyst‐like lesions were excluded. Pertinent case information was analyzed and short‐ and long‐term outcome was assessed. Results— There was no association between radiographic score and surgery score. Diagnostic ultrasound had a sensitivity of 79% and a specificity of 56% for identifying meniscal injuries. Follow‐up information was available for 35 horses; 23 horses (60%) improved after surgery, 16 (46%) became sound, and 13 (37%) returned to their previous level of function. A negative association was observed between age and degree of preoperative lameness and outcome. More severe changes observed on preoperative radiographs were also negatively associated with prognosis. No horses with grade 3 meniscal tears improved postoperatively and increasing meniscal pathology was negatively associated with return to previous function. A weak association between surgery grade and outcome was also observed. Degree of chondral damage, location of primary pathology, and microfracture techniques had no effect on outcome. Conclusions— Advanced horse age, severe lameness and preoperative radiographic changes, and presence of large meniscal tears are associated with a negative postoperative outcome for horses with stifle lameness. Appearance of the articular surface at surgery appears to be an inconsistent prognostic indicator. Clinical Relevance— Some horses with extensive cartilage damage may return to athletic function after arthroscopic debridement and lavage. A more pessimistic prognosis may be given to older horses, those with more severe preoperative lameness, and those with severe radiographic changes or large meniscal tears. 相似文献
96.
MICHAEL W. ROSS dvm Diplomate acvs JAMES A. ORSINI dvm Diplomate acvs DEAN W. RICHARDSON dvm Diplomate acvs BENSON B. MARTIN vmd 《Veterinary surgery : VS》1991,20(1):21-29
Infectious arthritis of the tarsocrural joint was treated in 13 horses with closed suction drainage through a flat, fenestrated, latex (Jackson-Pratt) drain, broad-spectrum antimicrobial agents, nonsteroidal anti-inflammatory drugs, and bandage immobilization. In 11 horses, arthroscopic lavage and debridement were also performed. Ingress drains were placed for lavage in six horses. Ten horses returned to their previous level of competition or were sound. One horse raced but had lameness of the affected tarsocrural joint and dropped in racing class; one horse was euthanatized because of laminitis in the supporting limb; and one horse was lame, but useful as a breeding animal. Closed suction drainage appeared to be a useful treatment in horses with infectious arthritis. Although arthroscopy was not necessary, it facilitated fibrin removal, lavage, and partial synovectomy. Because of the development of Pseudomonas superinfection in one horse, the use of simultaneous ingress catheters was not recommended. 相似文献
97.
Molecular characteristics of granulosa and cumulus cells and oocyte competence in Nelore cows with low and high numbers of antral follicles 下载免费PDF全文