Total body water and water turnover in sheep and deer     

W M Longhurst  N F Baker  G E Connolly  R A Fisk 《American journal of veterinary research》1970,31(4):673-677

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Tracheo-oesophageal fistula as a complication of an oesophageal foreign body in the dog--a case report     

N H Dodman  G J Baker 《The Journal of small animal practice》1978,19(5):291-296

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Diabetes mellitus in the horse: a case report and review of the literature   总被引：1，自引：0，他引：1  

J R Baker  H E Ritchie 《Equine veterinary journal》1974,6(1):7-11

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Number of Samples Required for the Estimation of Residual Soil Nitrate-Nitrogen: a Risk Based Analysis     

Kanwar  Rameshwar S.  Kumar  Ajay  Baker  David 《Water, air, and soil pollution》1998,107(1-4):163-174

A field experiment was conducted to determine the number of soil samples required to estimate the average residual soil nitrate (NO₃ ^-) in a given field under no-till and conventional tillage conditions. Four soil sampling devices (a 20.3-cm power earth auger, a 5.1-cm hand earth auger, a 3.2-cm soil probe, and a 1.9-cm soil probe) were used to collect soil samples from 35 locations each within the conventionally tilled and no-till fields. Soil samples were analyzed for soil water contents and NO₃ ^- concentrations in the soil for various depths. Simple graphs and tables were constructed which could be used by farmers and other professionals for estimating the average residual soil NO₃ ^- contents at a given confidence level or with a certain degree of risk. The confidence interval was taken as the difference between the highest and lowest value of the quartile range of the observed data. The results of this study indicated that the number of soil samples required to estimate the average residual soil NO₃ ^- contents increased as the degree of risk decreased. This study also indicated that the number of soil samples required for making a reasonable estimate of the residual soil NO₃ ^- contents were greater for a no-till field compared with the conventional tillage field.  相似文献   

Foraging areas of black‐browed and grey‐headed albatrosses breeding on Macquarie Island in relation to marine protected areas     

Aleks Terauds  Rosemary Gales  G. Barry Baker  Rachael Alderman 《水产资源保护:海洋与淡水生态系统》2006,16(2):133-146

• 1. Although marine protected areas (MPAs) are often established to protect threatened top‐order predators, there is a paucity of data that can be used to evaluate their efficacy in achieving this purpose.
• 2. We assessed the effectiveness of a network of MPAs around Macquarie Island in the Southern Ocean by examining the foraging areas of breeding black‐browed Thalassarche melanophrys and grey‐headed albatrosses T. chrysostoma.
• 3. During late incubation and brood periods over 90% of time spent foraging by black‐browed albatrosses was contained within MPAs, principally the Economic Exclusion Zone (EEZ) around Macquarie Island. In contrast, grey‐headed albatrosses spent only 34% of their time foraging in MPAs.
• 4. Black‐browed and grey‐headed albatrosses spent 30% and 15% of their respective foraging times in the Marine Park around Macquarie Island.
• 5. Both black‐browed and grey‐headed albatrosses foraged in Antarctic waters under the jurisdiction of the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR), accounting for 5% and 12% of the total foraging times respectively.
• 6. The spatial extent of MPAs around Macquarie Island appear to adequately cover much of the foraging distribution of breeding black‐browed albatrosses from Macquarie Island.
• 7. Breeding grey‐headed albatrosses spend significantly more time in waters outside the spatial extent of the surrounding MPAs and are at higher risk from fisheries activities and other threats.
• 8. Further information on the foraging movements both of albatrosses outside the breeding season and of juvenile albatrosses is required to more fully assess the efficacy of MPAs in protecting foraging habitats of these species.

Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

Cyclin D1 protein expression in human thyroid gland and thyroid cancer     

Temmim L  Ebraheem AK  Baker H  Sinowatz F 《Anatomia, histologia, embryologia》2006,35(2):125-129

Cell cycle progression is facilitated by cyclin dependent kinases (CDKs) that are activated by cyclins, including Cyclin D1 and inhibited by CDK inhibitors. Evidence of the involvement of cyclin gene alterations and over expression of various cyclins in human cancer is growing. The role of Cyclin D1 in malignant progression of papillary carcinomas of the thyroid has yet to be established. We therefore studied the expression of Cyclin D1 protein in thyroid carcinomas of young Kuwaiti patients (36 cases of conventional papillary thyroid carcinoma, 12 cases of its follicular variant, one case of tall cell thyroid carcinoma and one case of medullary carcinoma) using immunohistochemistry. In 23 patients (46%) circumscribed areas of cells were detected that showed a distinct to strong nuclear staining for immunoreactive Cyclin D1 whereas the remaining bulk of the carcinoma cells were negative or only showed a slight cytoplasmic staining. None of the tested clinical or path histological parameters showed a statistically significant correlation with the focal immunostaining. This does not rule out that the detected foci with positive nuclear Cyclin D1 immunostaining are areas where a progressive transformation to a more malignant phenotype occurs which eventually leading to lymph node and distant metastases.  相似文献   

Persistent infection with bovine viral diarrhea virus in an alpaca     

Mattson DE  Baker RJ  Catania JE  Imbur SR  Wellejus KM  Bell RB 《Journal of the American Veterinary Medical Association》2006,228(11):1762-1765

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Atmosphere. When dry air is too humid     

Peter T  Marcolli C  Spichtinger P  Corti T  Baker MB  Koop T 《Science (New York, N.Y.)》2006,314(5804):1399-1402

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Cassini at Enceladus. Tiger, tiger, burning bright     

Baker J 《Science (New York, N.Y.)》2006,311(5766):1388

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Estimates of variance components and repeatability for total forage yield in rye: implications for breeding     

Stephen L. Webb  Jagadeesh Mosali  Jerry L. Baker  Mark A. Newell 《Plant Breeding》2013,132(6):580-585

Cereal rye (Secale cereale L.) is an important forage crop in the USA for stocker cattle (Bos sp.) production, thus making forage yield an important breeding objective for the crop. However, little information is known about the repeatability for forage yield in this crop. The objectives of this research were to: (i) estimate variance components for forage yield from long‐term variety trials, (ii) estimate the repeatability for forage yield and (iii) relate this to breeding strategies for increased forage yield in rye. Trials were conducted over 14 years where 97 USA open‐pollinated varieties (OPVs) were evaluated. Repeatability ranged from 0.57 to 0.86 when the data were analysed by year for the 3 years with significant genotype main effects. Possible explanations for the lack of significant genotype main effects are discussed. Practical implications of these findings indicate that the development of improved cultivars with greater forage yield will require improved methods of selection based on family performance rather than the current methods based primarily on single plant visual selection.  相似文献