Small colon intussusception in a broodmare     

M W Ross  P R Stephens  J M Reimer 《Journal of the American Veterinary Medical Association》1988,192(3):372-374

A 9-year-old pregnant Standardbred broodmare was evaluated for signs of mild abdominal pain, failure to defecate, and mild abdominal distention. Rectal examination revealed the leading edge of a small colon intussusception, and peritoneal fluid analysis indicated suppurative peritonitis. Surgical management, including reduction of the intussusception and small colon resection with end-to-end anastomosis, resulted in successful outcome (1-year follow-up evaluation). Postoperative complications including dehiscence of the ventral midline surgical incision and simple obstruction at the anastomosis site necessitated a second surgical procedure. Small colon intussusception is an uncommon cause of signs of abdominal pain and is similar to type-IV rectal prolapse.  相似文献   

Schlieren photography of the piglet's microenvironment     

D B Stephens  I B Start 《The Cornell veterinarian》1972,62(1):20-26

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Foot-rot in pigs: observations on the clinical disease   总被引：2，自引：0，他引：2  

R H Penny  A D Osborne  A I Wright  T K Stephens 《The Veterinary record》1965,77(38):1101-1108

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Enhanced root nodulation of subterranean clover (Trifolium subterraneum) byRhizobium leguminosarium biovartrifolii in the presence of the earthwormAporrectodea trapezoides (Lumbricidae)     

B. M. Doube  M. H. Ryder  C. W. Davoren  P. M. Stephens 《Biology and Fertility of Soils》1994,18(3):169-174

In a greenhouse study, the effect of the earthwormAporrectodea trapezoides on root nodulation in seedlings of subterranean clover (Trifolium subterraneum) was examined in the presence and absence of addedRhizobium leguminosarium biovartrifolii (strain NA 30). WhenR. trifolii NA 30 was inoculated into dung and placed on the soil surface, the total number of root nodules was five times greater (P<0.001) in the presence of earthworms than without earthworms and the number of nodules on the primary root of the plants 2–8 cm below the soil surface was 4 to 6 times greater (P<0.001) in the presence of earthworms. The additional nodulation did not affect plant growth or foliar N. When NA30 was dispersed through the soil at the beginning of the experiment, the presence of earthworms did not influence the level of root nodulation. The presence of earthworms increased root dry weight by 20–30%, plant top weight by up to 125% (P<0.001), and foliar N by 5–25% (P<0.001). Surface-applied dung increased the dry weight of plant tops (2-to 3-fold,P<0.001) but did not affect the concentration of foliar N (P<0.005).  相似文献   

Growth,productivity and water use in three hybrid poplar clones     

Souch CA  Stephens W 《Tree physiology》1998,18(12):829-835

Three drought treatments (none, medium and severe) were applied to three container-grown, hybrid poplar clones (Beaupré, Trichobel and Ghoy) as a series of drying cycles over two years-in a greenhouse in 1994 and outside in 1995. Leaf area development, annual biomass production and annual water use were recorded. Clone Beaupré had greater rates of leaf area development (up to 11.8 x 10(-4) m(2) degrees C day(-1)) and subsequently greater dry matter production (up to 816 g tree(-1) year(-1)) and water use (up to 168 l tree(-1) year(-1)) than the other two clones. In all clones, rates of leaf area development, annual biomass production and water use were less under drought conditions than under well-watered conditions. On a proportional basis, the highest reduction in biomass by drought was in Trichobel (up to 74%), whereas, in absolute terms, the reduction was greatest in Beaupré (up to 500 g tree(-1)). However, under drought conditions, annual biomass production was greater in Clone Beaupré than in the other clones. The relationship between water use and biomass production was constant over both years, and was similar for Beaupré and Trichobel at 4.4 g l(-1), but was less for Ghoy at 3.5 g l(-1).  相似文献   

Nuclear power decisions     

Stephens J 《Science (New York, N.Y.)》1976,192(4241):740

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Ribozymes as potential anti-HIV-1 therapeutic agents   总被引：87，自引：0，他引：87  

N Sarver  E M Cantin  P S Chang  J A Zaia  P A Ladne  D A Stephens  J J Rossi 《Science (New York, N.Y.)》1990,247(4947):1222-1225

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Have clouds darkened since 1995?     

Li Z  Ackerman TP  Wiscombe W  Stephens GL 《Science (New York, N.Y.)》2003,302(5648):1151-2; author reply 1151-2

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Ferromagnetic imprinting of nuclear spins in semiconductors     

Kawakami RK  Kato Y  Hanson M  Malajovich I  Stephens JM  Johnston-Halperin E  Salis G  Gossard AC  Awschalom DD 《Science (New York, N.Y.)》2001,294(5540):131-134

We examine how a ferromagnetic layer affects the coherent electron spin dynamics in a neighboring gallium arsenide semiconductor. Ultrafast optical pump-probe measurements reveal that the spin dynamics are unexpectedly dominated by hyperpolarized nuclear spins that align along the ferromagnet's magnetization. We find evidence that photoexcited carriers acquire spin-polarization from the ferromagnet, and dynamically polarize these nuclear spins. The resulting hyperfine fields are as high as 9000 gauss in small external fields (less than 1000 gauss), enabling ferromagnetic control of local electron spin coherence.  相似文献   

Animal welfare in veterinary practice. J Yeates. Wiley‐Blackwell (UFAW Animal Welfare Series), 2013. 213 pages. A$86.95. ISBN 9781444334876.          下载免费PDF全文

T Stephens 《Australian veterinary journal》2017,95(1-2):45-45

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