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Nili Kahane Gilad Segev 《The Canadian veterinary journal. La revue veterinaire canadienne》2014,55(1):1241-1244
This report describes a successful dilation of tracheal stenosis in a 16-year-old dog using a conventional endotracheal tube balloon. This technique should be considered as palliative treatment when owners decline other therapeutic options. 相似文献
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Subedi R Shneor R Monaghan P Anderson BD Aniol K Annand J Arrington J Benaoum H Benmokhtar F Boeglin W Chen JP Choi S Cisbani E Craver B Frullani S Garibaldi F Gilad S Gilman R Glamazdin O Hansen JO Higinbotham DW Holmstrom T Ibrahim H Igarashi R de Jager CW Jans E Jiang X Kaufman LJ Kelleher A Kolarkar A Kumbartzki G Lerose JJ Lindgren R Liyanage N Margaziotis DJ Markowitz P Marrone S Mazouz M Meekins D Michaels R Moffit B Perdrisat CF Piasetzky E Potokar M Punjabi V Qiang Y Reinhold J Ron G 《Science (New York, N.Y.)》2008,320(5882):1476-1478
The protons and neutrons in a nucleus can form strongly correlated nucleon pairs. Scattering experiments, in which a proton is knocked out of the nucleus with high-momentum transfer and high missing momentum, show that in carbon-12 the neutron-proton pairs are nearly 20 times as prevalent as proton-proton pairs and, by inference, neutron-neutron pairs. This difference between the types of pairs is due to the nature of the strong force and has implications for understanding cold dense nuclear systems such as neutron stars. 相似文献
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Dank G Rassnick KM Kristal O Rodriguez CO Clifford CA Ward R Mallett CL Gieger T Segev G 《Journal of the American Veterinary Medical Association》2011,239(7):966-971
OBJECTIVE-To determine outcome of dogs with presumed primary hepatic lymphoma treated with various multiagent, doxorubicin-based chemotherapeutic protocols and identify factors associated with prognosis. DESIGN-Retrospective case series. ANIMALS-18 dogs with presumed primary hepatic lymphoma. PROCEDURES-Medical records were reviewed for information on signalment, treatment, and outcome. RESULTS-8 dogs had a complete remission (CR), with a median remission duration of 120 days. Dogs with leukocytosis, neutrophilia, hypoalbuminemia, hyperbilirubinemia, or a combination of hypoalbuminemia and hyperbilirubinemia were less likely to achieve a CR. Overall median survival time (MST) was 63 days (range, 2 to 402 days). In a multivariate analysis, response to treatment and serum albumin concentration were associated with MST. Dogs that did not achieve a CR had a significantly shorter MST than did dogs that did achieve a CR (13 vs 283 days, respectively). Dogs with serum albumin concentration < 2.5 g/dL at the time treatment was initiated had a significantly shorter MST than did dogs with serum albumin concentration within reference limits (10 vs 128 days, respectively). There was also a positive correlation between serum albumin concentration and survival time (r = 0.74). CONCLUSIONS AND CLINICAL RELEVANCE-Results suggested that dogs with primary hepatic lymphoma that underwent chemotherapy had a poor prognosis, with a low response rate. Dogs that responded to treatment had a better prognosis, and dogs with hypoalbuminemia had a poorer prognosis. 相似文献
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Aroch I Klement E Segev G 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2005,19(1):64-73
Neutrophil cytoplasmic toxicity is manifested as an abnormality in cell size or the cytoplasmic content upon examination of Romanowsky-stained blood smears, and is traditionally associated with infection and inflammation. The purpose of this retrospective study was to investigate the association of such changes with clinical and clinicopathologic characteristics, diseases, and prognoses in dogs. Dogs with neutrophil toxicity (n = 248) were compared with negative controls (n = 248). Statistical analyses included chi-square tests, independent t-tests, nonparametric Mann-Whitney tests, the chi-square trend test, and survival analysis. Dogs with neutrophil toxicity had a significantly higher prevalence of pale mucous membranes, tachycardia, fever, abdominal organomegaly, icterus, melena, and hematuria. Most mean hematologic variables were significantly different between groups. Dogs with neutrophil toxicity had a significantly (P < .05) higher prevalence of leukocytosis, leukopenia, neutrophilia, neutropenia, anemia, hyponatremia, hypokalemia, hypoproteinemia, hypoalbuminemia, and hypocalcemia. The prevalence of pyometra, parvovirus infection, acute renal failure, peritonitis, immune-mediated hemolytic anemia, disseminated intravascular coagulation, pancreatitis, septicemia, and neoplastic disorders was significantly higher among these dogs. Case fatality, hospitalization length, and treatment cost were significantly (P < .001) higher in dogs with neutrophil toxicity. Neutrophil toxicity severity was significantly (P < .0035) and positively associated with neutropenia, and negatively associated with leukocytosis and neutrophilia. A significant trend (P = .05) toward increasing case fatality with an increase of neutrophil toxicity was observed. In the neutrophil toxicity group, dogs with leukopenia (<5.0 X 10(3)/mm3) had a significantly (P < .0001) higher case fatality compared to dogs with normal or high leukocyte counts. We conclude that evaluation of blood smears for neutrophil cytoplasmic toxicity provides useful clinical information and can serve as a good prognostic predictor. 相似文献
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Disturbances such as grazing, invading species, and clear-cutting, often act at small spatial scales, and means for quantifying
their impact on fine scale vegetation patterns are generally lacking. Here we adopt a set of landscape metrics, commonly used
for quantifying coarse scale fragmentation, to quantify fine scale fragmentation, namely the fine scale vegetation structure.
At this scale, patches often consist of individual plants smaller than 1 m2, requiring the grain of the analysis to be much smaller. We used balloon aerial photographs to map fine details of Mediterranean
vegetation (pixel size <0.04 m) in experimental plots subjected to grazing and clear-cutting and in undisturbed plots. Landscape
metrics are sensitive to scale. Therefore, we aggregated the vegetation map into four coarser scales, up to a resolution of
1 m, and analyzed the effect of scale on the metrics and their ability to distinguish between different disturbances. At the
finest scale, six of the seven landscape metrics we evaluated revealed significant differences between treated and undisturbed
plots. Four metrics revealed differences between grazed and control plots, and six metrics revealed differences between cleared
and control plots. The majority of metrics exhibited scaling relations. Aggregation had mixed effects on the differences between
metric values for different disturbances. The control plots were the most sensitive to scale, followed by grazing and clearing.
We conclude that landscape metrics are useful for quantifying the very fine scale impact of disturbance on woody vegetation,
assuming that the analysis is based on sufficiently high spatial resolution data. 相似文献
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