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101.
102.
Relationships between results of the Ortolani method of hip joint palpation and distraction index, Norberg angle, and hip score in dogs 总被引:1,自引:0,他引:1
Puerto DA Smith GK Gregor TP LaFond E Conzemius MG Cabell LW McKelvie PJ 《Journal of the American Veterinary Medical Association》1999,214(4):497-501
OBJECTIVE: To determine whether results of the Ortolani method of hip joint palpation in dogs were related to distraction index (DI), Norberg angle, or radiographic hip score. DESIGN: Cross-sectional study. ANIMALS: 459 clinically normal dogs. PROCEDURE: Dogs were sedated for radiography and palpation of the hip joints. Results of hip joint palpation were classified as negative, mild positive, moderate positive, or severe positive. Distraction indices were measured for all dogs. Norberg angles were measured for 380 dogs for which ventrodorsal hip-extended radiographic projections were available. Hip scores assigned by the Orthopedic Foundation for Animals (OFA) were available for 95 dogs. RESULTS: Age, weight, and sex were not significantly associated with results of hip joint palpation. There was moderate correlation between results of hip joint palpation and DI (r = 0.636), low-moderate correlation between results of hip joint palpation and OFA hip scores (rs = 0.437), and weak negative correlation (r = -0.236) between results of hip joint palpation and Norberg angle. For joints without degenerative joint disease (DJD), there was a significant linear relationship between results of hip palpation and DI; however, for joint with DJD, there was not. Results of hip joint palpation were 5.3-fold as likely to be negative for dogs with DJD as for dogs without. CLINICAL IMPLICATIONS: Results of hip joint palpation were at best moderately correlated with radiographic measures of hip joint laxity. Therefore, hip joint palpation should be combined with hip-extended and stress radiography when assessing hip joint quality. 相似文献
103.
104.
Manabendra Deka Miha Humar Gregor Rep Borut Kričej Marjeta Šentjurc Marko Petrič 《Wood Science and Technology》2008,42(1):5-20
A series of experiments were carried out to investigate the colour stability of chemically treated and thermally modified
wood compared to non-modified wood during long term artificial UV light irradiation. One set of wood samples was vacuum-pressure
impregnated with alkaline (pH 9.8) copper (II) ethanolamine aqueous solution, while another set of samples from the same wood
block was thermally modified at 210°C and −0.90 bar for 2 h. The treated and modified wood samples along with the non-modified
ones were exposed to artificial UV light with the wave length in the region of UVA (315–400 nm) and UVB (280–315 nm) intermittently
for 500 h. Colour measurements were carried out throughout the irradiation period at an interval of 100 h according to CIEL*a*b*
system, where the results are presented in terms of ΔE, ΔL*, Δa* and Δb* values. Better photo-stability in terms of colour changes was recorded for both treated and modified woods compared to the
non-modified one. By means of EPR and DRIFT spectroscopic study it was shown that some degree of colour stability of treated
and modified woods, achieved during artificial UV light irradiation, resulted from lignin modifications and monomers of phenolic
compounds. 相似文献
105.
Meyer B Baum F Vollmer G Pischetsrieder M 《Journal of agricultural and food chemistry》2012,60(29):7306-7311
During thermal milk processing, severe oxidation can occur, which alters the technological and physiological properties of the milk proteins. Due to differences in composition and physicochemical properties, it can be expected that the particular milk proteins are differently affected by oxidative damage. Therefore, the protein-specific distribution of oxidation products in the heated milk proteome was investigated. Raw and heated milk samples were separated by one-dimensional gel electrophoresis. Protein oxidation was visualized by Western blot after derivatization of protein carbonyls with 2,4-dinitrophenylhydrazine. Thus, α-lactalbumin displayed enhanced oxidation compared to β-lactoglobulin, despite its lower concentration in milk. Highly selective oxidation was detected for a previously unassigned minor milk protein. The protein was identified by its peptide mass fingerprint as a variant of α(S1)-casein (α(S1)-casein*). Similar oxidation patterns were observed in several commercial milk products. 相似文献
106.
Watson J Selleck P Axell A Bruce K Taylor T Heine H Daniels P Jeggo M 《Australian veterinary journal》2011,89(Z1):4-6
In August 2007, several horses showed pyrexia and respiratory signs while in post-arrival quarantine in Australia. Subsequent investigations diagnosed equine influenza by serology and PCR in two quarantine stations. A common origin in a shipment of horses from Japan was indicated. 相似文献
107.
Gregor Heine Johannes F. J. Max Hendrik Führs Diana W. Moran‐Puente Dimitri Heintz Walter J. Horst 《植物养料与土壤学杂志》2011,174(5):827-836
Black leaf mold caused by Pseudocercospora fuligena is an important fungal disease of tomato in Southeast Asia. The objective of this study was to evaluate the control of this disease using high manganese (Mn) applied to the root substrate and to evaluate the role of the leaf apoplast in plant response to fungal infection. In a nethouse experiment in Thailand, Mn above the optimum for plant growth but below toxicity increased resistance of tomato plants to black leaf mold. Enhanced resistance caused by Mn was also obtained when tomato plants were grown under controlled conditions in a mist chamber and artificially inoculated with the fungus. Manganese significantly increased plant peroxidases in the leaf apoplast. The highest peroxidase activity was measured when plants were inoculated with Pseudocercospora fuligena. Defense‐related proteins in the leaf apoplast increased when plants were inoculated with Pseudocercospora fuligena but not when treated with high Mn. It is concluded that Mn above the optimum level for plant growth can contribute to the control of Pseudocercospora fuligena in tomato. The Mn effect on disease resistance is associated with the activation of plant peroxidases in the leaf apoplast. A systemic response, possibly mediated by NADH peroxidase activity, also seems to trigger disease resistance in leaves with low Mn concentrations. 相似文献
108.
Carpenter KE Abrar M Aeby G Aronson RB Banks S Bruckner A Chiriboga A Cortés J Delbeek JC Devantier L Edgar GJ Edwards AJ Fenner D Guzmán HM Hoeksema BW Hodgson G Johan O Licuanan WY Livingstone SR Lovell ER Moore JA Obura DO Ochavillo D Polidoro BA Precht WF Quibilan MC Reboton C Richards ZT Rogers AD Sanciangco J Sheppard A Sheppard C Smith J Stuart S Turak E Veron JE Wallace C Weil E Wood E 《Science (New York, N.Y.)》2008,321(5888):560-563
The conservation status of 845 zooxanthellate reef-building coral species was assessed by using International Union for Conservation of Nature Red List Criteria. Of the 704 species that could be assigned conservation status, 32.8% are in categories with elevated risk of extinction. Declines in abundance are associated with bleaching and diseases driven by elevated sea surface temperatures, with extinction risk further exacerbated by local-scale anthropogenic disturbances. The proportion of corals threatened with extinction has increased dramatically in recent decades and exceeds that of most terrestrial groups. The Caribbean has the largest proportion of corals in high extinction risk categories, whereas the Coral Triangle (western Pacific) has the highest proportion of species in all categories of elevated extinction risk. Our results emphasize the widespread plight of coral reefs and the urgent need to enact conservation measures. 相似文献
109.
Insecticide use: Contexts and ecological consequences 总被引:2,自引:0,他引:2
Constraints to the sustainability of insecticide use include effects on human health, agroecosystems (e.g., beneficial insects),
the wider environment (e.g., non-target species, landscapes and communities) and the selection of insecticide-resistant traits.
It is possible to find examples where insecticides have impacted disastrously on all these variables and others where the
hazards posed have been (through accident or design) ameliorated. In this review, we examine what can currently be surmised
about the direct and indirect long-term, field impacts of insecticides upon the environment. We detail specific examples,
describe current insecticide use patterns, consider the contexts within which insecticide use occurs and discuss the role
of regulation and legislation in reducing risk. We consider how insecticide use is changing in response to increasing environmental
awareness and inevitably, as we discuss the main constraints to insecticide use, we suggest why they cannot easily be discarded.
Gregor
Devine has an MSc in pest management and a PhD in applied entomology from Imperial College, London. He is a Senior Research Scientist
employed by Rothamsted Research, UK. He is currently investigating novel disease vector control methods in Peru in association
with the US Naval Medical Research Center Detachment, the Peruvian Ministry of Health, the University of California-Davis,
and the US Centers for Disease Control.
Michael Furlong has an MSc in pest management and a PhD in applied entomology from Imperial College, London. He is a Lecturer and Researcher
in the School of Integrative Biology at the University of Queensland, Australia. His research interests include biological
control, and the design and implementation of sustainable Integrated Pest Management strategies for international development.
He works in Australia, China, North Korea and the Pacific Islands. 相似文献
110.
Hsp70s are a ubiquitous family of molecular chaperones involved in many cellular processes. Two Hsp70s, Lhs1p and Kar2p, are required for protein biogenesis in the yeast endoplasmic reticulum. Here, we found that Lhs1p and Kar2p specifically interacted to couple, and coordinately regulate, their respective activities. Lhs1p stimulated Kar2p by providing a specific nucleotide exchange activity, whereas Kar2p reciprocally activated the Lhs1p adenosine triphosphatase (ATPase). The two ATPase activities are coupled, and their coordinated regulation is essential for normal function in vivo. 相似文献