Preliminary study of ethylene oxide sterilization of full-thickness cortical allografts used in segmental femoral fracture repair     

A L Johnson  M M Shokry  L E Stein 《American journal of veterinary research》1985,46(5):1050-1056

Full-thickness canine cortical allografts were cleanly harvested, sterilized with ethylene oxide, and stored at room temperature. The allografts were incorporated into canine segmental femoral fracture repairs and compared clinically, radiographically, and morphologically with control femoral cortical autografts for function of the limb, graft acceptance, and bone union. Sterility was maintained and the cortical allografts were well accepted by the host animals, resulting in full use of the limb which was subjected to surgical operation. The allografts showed healing patterns similar to those of the autografts, as determined by radiographic, gross, and histologic evaluation of the proximal and distal host-graft interfaces. Evaluations were made monthly. The host-graft interfaces of the allografts and autograft were filled with woven bone with adjacent vascular invasion and remodeling of the graft at the final 4th-month evaluation.  相似文献   

Sectional notes     

J. H. Heckman  H. G. Zuckerman  C. H. Metzger  B. A. Brown  E. R. Bennett  W. B. Ward  C. L. Fitch  O. H. Elmer  Jhon S. Gardner  Julan C. Miller  Frank W. Hussey  E. L. Newdick  Ralph W. Donaldson  Lionel Harris  H. O. Werner  Wm. H. Martin  E. V. Hardenburg  T. E. Odland  Robert Schmidt  Geo E. Prince  Brooks D. Drain  Harold L. Bailey  G. S. Ralston  Chase D. Gaines  J. G. Milward  John Tucker 《American Journal of Potato Research》1935,12(6):158-170

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THE DIGESTIBILITY AND VOLUNTARY INTAKE OF S22 AND H.1 RYEGRASS, S170 TALL FESCUE, S48 TIMOTHY, S215 MEADOW FESCUE AND GERMINAL COCKSFOOT     

D. J. Minson  C. E. Harris    W. F. Raymond  R. Milford† 《Grass and Forage Science》1964,19(3):298-305

Pure swards of S22 Italian ryegrass, H.1 hybrid ryegrass, S170 tall fescue, S48 timothy, S215 meadow fescue and Germinal cocksfoot were each harvested at several stages of maturity during first growth in the spring, and in the subsequent regrowths. Each batch of herbage was fed to sheep in a digestion trial under conditions of voluntary intake. Results from the first growth herbages showed the expected fall in digestibility with increasing maturity. However, the digestibility of S22, H.1, S170 and S48 began to fall well before ear emergence, whereas the digestibility of Germinal fell only slowly up to the time of ear emergence, as had been found previously with S24 and S23 ryegrass and S37 cocksfoot. The rate of fall of digestibility in H.1 and S48 (0.4 units/day) also appeared to be lower than with the perennial ryegrasses and cocksfoot (0.5 units/day). The monthly regrowths within each herbage were of similar digestibility, but the mean digestibility of regrowths differed between herbages, being highest for S215 and lowest for Germinal and S170. The grasses with highest digestibility in the early Spring, in particular S22 ryegrass, were not, however, always the most digestible in the subsequent regrowths. The numbers of sheep fed on each herbage were insufficient to show whether there were significant differences in voluntary intake between different herbage species of the same digestibility. It is suggested that an intake/digestibility relationship, based on data from more animals, should be developed for each herbage species. Only if different relationships are found can it be concluded that factors other than level of digestibility have an effect on intake.  相似文献   

A LOW-PRICE STATION INDICATOR     

Harris GD 《Science (New York, N.Y.)》1934,80(2063):38-40

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Feline leukemia vaccine: efficacy, contents and probable mechanism   总被引：1，自引：0，他引：1  

J M Mastro  M G Lewis  L E Mathes  R Sharpee  M J Tarr  R G Olsen 《Veterinary immunology and immunopathology》1986,11(3):205-213

An effective subunit vaccine against feline leukemia virus infection and related diseases has been developed. The source of the vaccine immunogen is feline retrovirus persistently infected cells that continuously synthesize and shed virus polypeptides. Western blot analysis identifies FeLV-gp70, p27, p15, p12, and p10 in the subunit vaccine preparation. Cats immunized with the vaccine developed antibodies to a 70,000 MW protein of the vaccine that seems to be distinct from, but related to the FeLV-gp70 polypeptide.  相似文献   

Strip-grazing: Reduces pony dry matter intakes and changes in bodyweight and morphometrics     

Annette C. Longland  Clare Barfoot  Patricia A. Harris 《Equine veterinary journal》2022,54(1):159-166

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抗生素对火炬松的器官发生植株再生的影响(英文)     

Latoya Harris  Ronald J.Newton 《林业研究》2003,14(3)

本文研究了氨苄青霉素、羧苄青霉素和头孢霉素等3种抗生素对火炬松愈伤组织的生长和分化及不定芽生根的影响。结果表明,头孢霉素最有利于愈伤组织的诱导和生长,羧苄青霉素最有利于芽的分化,氨苄青霉素降低了不定芽的生根频率。所有试验的3种抗生素提高愈伤组织的形成和芽再生,但降低了芽的生根频率。这些结果表明,选择合适的抗生素对优化火炬松遗传转化体系有重要作用。图3表4参25。  相似文献   

Der Einfluß von Außenfaktoren auf das Wanderverhalten der Deutschen Schabe,Blattella germanica (L.) (Blattodea,Blattellidae), in einer Mülldeponie     

Prof. Dr. W. Stein  Dr. H. Haschemi 《Journal of pest science》1991,64(4):65-70

Mass propagation of the German cockroach in refuse tips may result in an increased emigration of this species into the surrounding area of the tip and thus in a heavy infestation of nearby buildings. Therefore, knowledges about the migration behavior are important when refuse tips are managed or projected. The influence of several environmental factors (as sun, day time, wind, temperature, season, light intensity) on the running behavior of the German cockroach was investigated under outdoor conditions. The most important results are as follows:

1. The reaction of young larvae (especially of L₁ and L₂) on the investigated factors differs considerably from that of older larvae and adults. As the young larvae do not emigrate, their behavior can be neglected in respect to the questions discussed here.
2. During sunshine, the position of the sun is primarily responsible for the direction of the migration. The highest percentage of the cockroaches walks directly towards the sun or a few grade right and left from the sun. When the sun is covered by clouds, the variation in the running direction is very high and many cockroaches migrate even into the direction opposite to the sun.
3. From morning to evening, the main migration direction is shifting from east to west, following the position of the sun.
4. Wind direction (at speeds of less than 5 m/sec.) and temperature (within the activity range of the cockroaches from approximately 18 to more than 30°C) have no recognizable influence upon the migration direction.
5. The clearest reaction of the running cockroaches towards the position of the sun was noticed during the main migration-time in the year (June and July).
6. The results of these investigations confirm former findings made in the field during a mass emigration of the German cockroach from a refuse tip.

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Plant biotechnology: A case study ofBacillus thuringiensis (Bt) and its application to the future of genetic engineered trees     

Tang Wei  Latoya Harris  Ronald J. Newton 《林业研究》2004,15(1):1-10

Agricultural productivity may be raised in a sustainable way by many different technologies such as biological fertilizers, soil and water conservation, biodiversity conservation, improved pest control, and changes in land ownership and distribution. Of these measures, biotechnology applications probably hold the most promise in augmenting conventional agricultural productivity, because biotechnology applications give not only the need to increase production, but also protect the environment and conserving natural resources for future generations. Biotechnology applications will have the possibilities to increase productivity and food availability through better agronomic performance of new varieties, including resistance to pests; rapid multiplication of disease-free plants; ability to obtain natural plant products using tissue culture; diagnosis of diseases of plants and livestock; manipulation of reproduction methods increasing the efficiency of breeding; and the provision of incentives for greater participation by the private sector through investments. Insect resistance through the transfer of a gene for resistance fromBacillus thuringiensis (Bt) is one of the most advanced biotechnology applications already being commercialized in many parts of the world. This paper reviews the development and the status ofBt technology and application ofBt transgenic plants in current agriculture, and discusses specific issues related to the transfer of the technology to the future of genetic engineered trees with emphasis on conifers. Biography: Tang Wei (1964-), male, Ph. Doctor, Research associate, Department of Biology, Howell Science Complex, East Carelina University, Greenville, NC 27858-4353, USA. Responsible editor: Chal Ruihai  相似文献   

与生长激素相关的高等植物细胞周期生化调控     

唐巍 《林业研究》2004,15(3)

高等植物细胞周期是细胞生物学上的重要研究领域。细胞周期受遗传和发育影响因素的调控。本文综述高等植物细胞周期中涉及到细胞周期关卡GO-G1-S期和G2-M期的激素调控。最新研究成果证明玉米素、腺嘌呤、激动素、赤霉素和脱落酸等通过细胞周期蛋白依赖性蛋白激酶及细胞周期关卡的脱磷酸化控制细胞周期。植物D-型细胞周期蛋白也已被证明在细胞周期调控中起关键作用。本文有关细胞周期的研究综述对植物细胞和发育生物学研究有参考价值。图3参61。  相似文献