Suspected intramedullary bone infarct subsequent to tibial plateau levelling osteotomy in a dog          下载免费PDF全文

ME Newman  KA Johnson 《Australian veterinary journal》2015,93(7):255-258

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Lunar surface magnetic fields and their interaction with the solar wind: results from lunar prospector   总被引：1，自引：0，他引：1  

RP Lin  DL Mitchell  DW Curtis  KA Anderson  CW Carlson  J McFadden  MH Acuna  LL Hood  A Binder 《Science (New York, N.Y.)》1998,281(5382):1480-1484

The magnetometer and electron reflectometer experiment on the Lunar Prospector spacecraft has obtained maps of lunar crustal magnetic fields and observed the interaction between the solar wind and regions of strong crustal magnetic fields at high selenographic latitude (30 degreesS to 80 degreesS) and low ( approximately 100 kilometers) altitude. Electron reflection maps of the regions antipodal to the Imbrium and Serenitatis impact basins, extending to 80 degreesS latitude, show that crustal magnetic fields fill most of the antipodal zones of those basins. This finding provides further evidence for the hypothesis that basin-forming impacts result in magnetization of the lunar crust at their antipodes. The crustal magnetic fields of the Imbrium antipode region are strong enough to deflect the solar wind and form a miniature (100 to several hundred kilometers across) magnetosphere, magnetosheath, and bow shock system.  相似文献   

Effect of sex and rearing system on the quality and mineral content of fiber from raeini cashmere goats     

Mehrdad Shamsaddini-Bafti  Mahnaz Salehi  Ali Maghsoudi  Ali Mostafa Tehrani  Farhad Mirzaei  Syed Mojtaba Syed Momen 《畜牧与生物技术杂志(英文版)》2012,3(3):160-165

The aim of this study was to compare the quality characteristics and mineral content of the fiber from male and female cashmere goats raised under different management systems. Male and female Raeini cashmere goats (<1.5 years of age, n = 48) were selected from flocks raised at a government breeding station or raised commercially under either rural or nomadic conditions. The staple length, cashmere fiber diameter, coefficient of variation for fiber diameter, percentage of cashmere in a fleece, percentage of guard hair in a fleece and cashmere tenacity averaged 4.6 ±0.1 cm, 18.0 ±0.1 m, 20.9 ± 0.4%, 66.1 ± 1.5%, 33.8 ± 1.5% and 1.8 ± 0.2 gf/tex, respectively. The sulfur, copper and zinc content of the cashmere averaged 2.8 ± 0.1%, 0.00065 ± 0.00002% and 0.01276 ± 0.00025%, respectively. Rearing method significantly affected staple length, coefficient of variation of fiber diameter, cashmere tenacity and copper content. Males had a higher coefficient of variation of fiber diameter and cashmere tenacity than females (P < 0.05).  相似文献   

Knowledge and attitudes of Australian livestock producers concerning biosecurity practices     

CC Paquette  KA Schemann  MP Ward 《Australian veterinary journal》2020,98(11):533-545

Biosecurity risks are a major threat to the profitability of the industry as well as impacting human and animal health. Livestock producers play a crucial role in biosecurity as the first to notice changes in the health or productivity of their stock and are generally responsible for implementing protective measures. However, uptake of biosecurity measures by producers is variable. We critically appraised the current literature regarding biosecurity practices in Australian livestock industries and highlight aspects that are well understood as well as those where further research or information is needed. Findings from 12 cross-sectional studies suggest that Australian producers' knowledge of biosecurity methods and importance might have a positive influence on their willingness to implement or incorporate biosecurity practices. There is moderate evidence supportive of biosecurity being well understood by livestock producers across Australia. Barriers to producers using biosecurity practices included lack of information or communication from agricultural, veterinary or government organisations. It was found that larger stock numbers were positively correlated with biosecurity implementation and that producers used veterinarians, government and industry agencies as resources for trusted information.  相似文献   

Survey of captive parrot populations around Port Phillip Bay,Victoria, Australia,for psittacine beak and feather disease virus,avian polyomavirus and psittacine adenovirus          下载免费PDF全文

CL Hulbert  A Chamings  KA Hewson  PA Steer  M Gosbell  AH Noormohammadi 《Australian veterinary journal》2015,93(8):287-292

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Detailed investigation of the production of the bread flavor component 6-acetyl-1,2,3,4-tetrahydropyridine in proline/1,3-dihydroxyacetone model systems     

Adams A  Tehrani KA  Kersiene M  De Kimpe N 《Journal of agricultural and food chemistry》2004,52(18):5685-5693

The production of 6-acetyl-1,2,3,4-tetrahydropyridine (ATHP), an important Maillard flavor component, in the reaction of L-(-)-proline and 1,3-dihydroxyacetone was investigated as a function of different reaction conditions. The two major side products from the reaction were identified as 5-acetyl-6-methyl-2,3-dihydro-1H-pyrrolizine and 5-acetyl-6-hydroxymethyl-2,3-dihydro-1H-pyrrolizine, the last one being a new compound described here for the first time. A maximum yield of ATHP of 2.7 mol % from L-(-)-proline and 1,3-dihydroxyacetone was noted at 130 degrees C in the presence of 2 equiv of sodium bisulfite. The role of sodium bisulfite as a reducing species, and as a stabilizing agent for 6-acetyl-1,2,3,4-tetrahydropyridine, was clarified. In view of the new data obtained, the hypothesized mechanism of formation of 6-acetyl-1,2,3,4-tetrahydropyridine was confirmed, and the reaction mechanisms leading to 2,3-dihydro-1H-pyrrolizines were reconsidered.  相似文献   

Thermal degradation studies of glucose/glycine melanoidins     

Tehrani KA  Kersiene M  Adams A  Venskutonis R  De Kimpe N 《Journal of agricultural and food chemistry》2002,50(14):4062-4068

Nondialyzable and water-insoluble melanoidins, isolated from a glucose/glycine model reaction mixture, which was prepared in a standardized way according to the guidelines of the COST Action 919, were heated at different temperatures ranging from 100 to 300 degrees C. Among the volatile compounds, which were analyzed by SPME and GC-MS, pyrazines, pyridines, pyrroles, and furans were detected. In general, total amounts of volatile compounds increased with the temperature. When water-insoluble melanoidins were heated, especially at higher temperatures, this resulted in a higher diversity of isolated compounds. For furans, pyrroles, pyrazines, and carbonyl compounds a maximum was observed in the case of high molecular weight melanoidins around 200-220 degrees C. Pyridines and total oxazoles, however, were generated in higher yields with increasing temperatures. These results demonstrate the possibility of producing some flavor-significant volatiles from heated standard melanoidins at temperatures relevant to food preparation and contribute to the flavor aspects originating from melanoidins.  相似文献   

Application of high-resolution melt curve analysis for classification of infectious bronchitis viruses in field specimens     

KA Hewson  GF Browning  JM Devlin  J Ignjatovic  AH Noormohammadi 《Australian veterinary journal》2010,88(10):408-413

Objective A real-time polymerase chain reaction (PCR)/high-resolution melt (HRM) curve analysis protocol was developed in our laboratory to differentiate infectious bronchitis (IB) virus reference strains. In the current study, this method was used to detect and classify IB viruses in field submissions. Procedure Over an 11-month period samples from 40 cases of suspected IB virus were received and 17 submissions were positive for IB virus by polymerase chain reaction. HRM curve analysis classified each strain as subgroup 1, 2 or 3 strain (12 submissions) or a strain that was unable to be classified (5 submissions). The 3′ untranslated region (UTR) and partial S1 gene nucleotide sequences for the 17 IB virus strains were determined and their identity with those of the relative reference strains compared to confirm the classifications generated using the HRM curve analysis. Results Of the 12 IB field viruses classified as subgroup 1, 2, or 3 using HRM curve analysis, the 3′UTR and S1 gene nucleotide sequences had identities ≥99% with the respective subgroup reference strain. Analysis of the 3′ UTR and S1 gene nucleotide sequences for the five IB virus strains that could not be classified indicated that four belonged to one of the subgroups, and one was a potential recombinant strain (between strains from subgroups 2 and 3). A novel recombinant strain was also detected. Conclusion HRM curve analysis can rapidly assign the majority of IB viruses present in field submissions to known subgroups. Importantly, HRM curve analysis also identified variant genotypes that require further investigation.  相似文献   

Antibodies in calves on feed supplemented with chlortetracycline after vaccination with Brucella abortus strain 19     

P Nicoletti  R M Mason  J Tehrani 《Journal of the American Veterinary Medical Association》1987,190(8):1002-1003

Twenty dairy heifers each consumed 350 mg of chlortetracycline/day in their feed. Four tests were performed on serum specimens from these and 20 control calves after vaccination with Brucella abortus strain 19. The numbers of positive test results on the card test and mean titers on the tube and rivanol agglutination and complement-fixation tests were compared in the 2 groups. Using the rivanol and complement-fixation tests, there were differences in the mean titers at weeks 5 and 6 after vaccination, but by week 10, differences were not found. The results suggest that addition of low concentration of chlortetracycline in feeds have minimal effects on postvaccinal serologic reactions determined after strain-19 inoculation.  相似文献   

Importation of horses for special events     

KA DOYLE 《Australian veterinary journal》1994,71(3):93-93

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