Musculoskeletal responses of 2-year-old Thoroughbred horses to early training. Conclusions     

EC Firth  CW Rogers 《New Zealand veterinary journal》2013,61(6):377-383

This paper summarises and presents in context the main findings of an extensive series of studies of early training lasting 13 weeks in which the tissue responses of 2-year-old Thoroughbred horses were assessed using a combination of methods. Negligible clinical injury was detected and thus the study fulfilled the intention of investigating adaptive change rather than injury. Cancellous and cortical bone, some digital tendons, and articular cartilage responded to early training exercise to a greater or lesser degree. Clinical examination and ancillary diagnostic aids currently in veterinary clinical use are not sufficient to detect early abnormalities in metacarpo-phalangeal joint (MCPJ) cartilage found in both trained and untrained horses. Future work should centre on detection of such changes, on the precise registration of training workload, and on the manipulation of the responses of musculoskeletal tissues by careful investigation of the effects of introducing conditioning exercise at a young age.  相似文献   

Katy Keiffer: What’s the matter with meat?     

Rachel Thayer Boothby 《Agriculture and Human Values》2018,35(4):913-914

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THE END OF CORY'S SHEARWATER     

Thayer GH 《Science (New York, N.Y.)》1915,42(1079):308-310

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Gut reactions of radioactive nitrite after intratracheal administration in mice   总被引：1，自引：0，他引：1  

J R Thayer  J H Chasko  L A Swartz  N J Parks 《Science (New York, N.Y.)》1982,217(4555):151-153

Intratracheal administration to mice of radioactive nitrite labeled with nitrogen-13 (13NO2-) (half-life, 9.96 minutes) in dosages that do not cause pharmacological perturbation reveals that oxidative and reductive reactions occur in different organs. Oxidation of 13NO2- to radioactive nitrate (13NO3-) predominates in the blood and liver. Reduction of 13NO2- occurs in those mice that harbor intestinal microflora; this reduction does not occur in germ-free mice. The intestinal reduction products include ammonium, glutamate, glutamine, and urea. With a detection limit of about 0.01 percent of the instilled nitrogen-13, no labeled nitrosamines were detected within 30 minutes. Reduced nitrogen-13 is transported out of the intensive into the circulatory system and appears in the urine along with 13NO3-. The biological half-period for 13NO2- destruction is about 7 minutes, and both oxidation and reduction products are formed.  相似文献   

VITAMIN K     

Doisy EA  Binkley SB  Thayer SA  McKee RW 《Science (New York, N.Y.)》1940,91(2351):58-62

During the decade following Dam's first observations on the hemorrhagic syndrome the combined efforts of several groups of investigators have solved many of the important problems connected with the new vitamin. Sources of vitamin K were discovered, methods of extraction and purification devised, the isolation effected, the structure of K(1) worked out and then verified by synthesis, and a promising start made on the therapeutic applications. In addition, simple water soluble compounds with antihemorrhagic properties have been supplied for clinical work. Preliminary results with these compounds are encouraging.  相似文献   

2001 Report of the American Association of Feline Practitioners and Academy of Feline Medicine Advisory Panel on feline retrovirus testing and management     

Levy J  Richards J  Edwards D  Elston T  Hartmann K  Rodan I  Thayer V  Tompkins M  Wolf A;American Association of Feline Practitioners;Academy of Feline Medicine Advisory Panel 《Journal of Feline Medicine and Surgery》2003,5(1):3-10

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gamma-Radiation influences browning, antioxidant activity, and malondialdehyde level of apple juice     

Fan X  Thayer DW 《Journal of agricultural and food chemistry》2002,50(4):710-715

Apple juice was gamma-irradiated at 5 degrees C at doses ranging from 0 to 8.9 kGy and then stored at 5 degrees C for 15 days. Ionizing radiation reduced the browning of apple juice and increased antioxidant activity measured by the ferric-reducing antioxidant power (FRAP) assay. The magnitude of changes increased with radiation dose. The level of malondialdehyde (MDA) measured using the thiobarbituric acid reactive substrates assay increased at radiation doses above 2.67 kGy. The browning of irradiated juices increased during storage at 5 degrees C, but the irradiated juices were still lighter than controls at the end of storage. Differences in FRAP values disappeared during early periods of storage while higher MDA levels were observed in irradiated samples during most of the storage period. Elimination of suspended matter from apple juice did not alter irradiation-induced changes in browning, FRAP, or MDA formation. As compared to irradiation conducted at 5 and 20 degrees C, treatment at -15 degrees C was less effective in reducing browning and in increasing MDA formation but elevated FRAP values. The exclusion of oxygen from juices did not affect the reduction in browning due to irradiation but promoted the increase in FRAP values and decreased the irradiation-induced MDA formation.  相似文献   

Toxicological studies in tropical ecosystems: an ecotoxicological risk assessment of pesticide runoff in South Florida estuarine ecosystems     

Scott GI  Fulton MH  Wirth EF  Chandler GT  Key PB  Daugomah JW  Bearden D  Chung KW  Strozier ED  DeLorenzo M  Sivertsen S  Dias A  Sanders M  Macauley JM  Goodman LR  LaCroix MW  Thayer GW  Kucklick J 《Journal of agricultural and food chemistry》2002,50(15):4400-4408

A multiyear study in the C-111 canal system and associated sites in Florida Bay was undertaken to determine the potential pesticide risk that exists in South Florida. After the examination of extensive pesticide concentration data in surface water, tissues, and semipermeable membrane devices (SPMDs), canal contamination seems to be derived from the extensive agricultural production that drains into the C-111 canal. The results of this study indicate that runoff from agricultural processes led to quantifiable pesticide residues in both canal and bay surface water, which occasionally exceeded current water quality criteria. The major pesticide of concern was endosulfan, which was detected at 100% of the sites sampled. Endosulfan exposure did not cause any acute effects in fish and crustaceans deployed in field bioassays. Chronic effects were observed in copepods, clams, and oysters but could not be attributed to endosulfan exposure. The decision to alter the C-111 canal flow and allow increased freshwater flow into the adjacent Everglades National Park may result in discharges of pesticides into the Everglades. Continued monitoring in this area is needed during this change in flow regime.  相似文献   

Exotic Pest Information Collection and Analysis (EPICA) – gathering information on exotic pests from the World Wide Web*     

M. Bateman  C. Brammer  C. Thayer  H. Meissner  W. Bailey 《EPPO Bulletin》2007,37(2):404-406

This paper describes the Exotic Pest Information Collection and Analysis (EPICA) project, a cooperative effort of the United States Department of Agriculture's (USDA) Center for Plant Health Science and Technology (CPHST) and the National Science Foundation's Center for Integrated Pest Management (CIPM). The EPICA team identifies, archives, evaluates, and communicates relevant information about exotic plant pests from around the world that potentially threaten US agriculture and the environment. The goal of the EPICA project is to provide key groups within USDA's Plant Protection and Quarantine (PPQ) with regular updates of vital pest information to enable a proactive safeguarding approach.  相似文献   

THE CONTRIBUTIONS OF PASTEUR TO MEDICINE AND HUMANITY     

Thayer WS 《Science (New York, N.Y.)》1923,58(1511):475-483

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