ANSWERS FOR FILM READING SESSION* 1995 AMERICAN COLLEGE OF VETERINARY RADIOLOGY MEETING HONOLULU,HAWAII     

Clifford R. Berry 《Veterinary radiology & ultrasound》1995,36(5):449-451

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Myenteric ganglial cells of the esophagus in cats with achalasia of the esophagus   总被引：1，自引：0，他引：1  

D H Clifford 《American journal of veterinary research》1973,34(10):1333-1336

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Metabolism of the 1,2,4-triazolylmethane fungicides,triadimefon, triadimenol,and diclobutrazol,by Aspergillus niger (van Tiegh.)     

A.H.B. Deas  D.R. Clifford 《Pesticide biochemistry and physiology》1982,17(2):120-133

Metabolism of the triazolylmethane fungicides triadimefon, triadimenol, and diclobutrazol by Aspergillus niger was studied using a replacement culture technique and ¹⁴C substrates. Components of metabolite mixtures were characterized by TLC, GLC, radio-GC, and GC-MS analyses of the free materials and their trifluoroacetate and trimethylsilyl ether derivatives. The three compounds underwent a common metabolic change involving oxidation of C(CH₃)₃ to C(CH₃)₂CH₂OH. In this work the isopropyl analog of triadimefon, previously reported as a metabolite, was an artifact and resulted from nonbiological oxidation of the corresponding primary alcohol. The fungus also reduced triadimefon to triadimenol, giving a mixture of 1R2S, 1S2R and 1R2R, 1S2S diastereoisomers. The less fungitoxic 1R2S, 1S2R triadimenol predominated, so that this conversion may be directly associated with the relative insensitivity of A. niger to triadimefon. Implications of oxidative and reductive metabolism of these fungicides are suggested with particular reference to the differing fungitoxicities of diastereoisomers and enantiomers.  相似文献   

OSTEOSARCOMA OF THE PATELLA WITH PULMONARY METASTASES IN A DOG     

Michael D.  Lucroy  DVM  MS  Jeffrey N.  Peck  DVM  Clifford R.  Berry  DVM 《Veterinary radiology & ultrasound》2001,42(3):218-220

A 6-year-old neutered male Rottweiler was examined for a progressive right pelvic limb lameness. In radiographs of the right stifle, there was an osteolytic lesion with irregular new bone formation along the cranial aspect of the patella consistent with an aggressive bone lesion. In thoracic radiographs, there were multiple soft tissue nodular opacities throughout the lung fields, consistent with pulmonary metastases. Microscopically, fine needle aspirate samples from the right patella contained pleomorphic spindle cells with cytologic features of osteosarcoma. The presence of pulmonary metastases at the time of initial diagnosis in the dog described herein suggests that osteosarcoma of the patella has the potential for similar aggressive biologic behavior as that seen in dogs with appendicular osteosarcoma.  相似文献   

Observations on fighting dogs     

D H Clifford  M P Boatfield  J Rubright 《Journal of the American Veterinary Medical Association》1983,183(6):654-657

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Myenteric ganglial cells in dogs with and without achalasia of the esophagus   总被引：3，自引：0，他引：3  

D H Clifford  F Gyorkey 《Journal of the American Veterinary Medical Association》1967,150(2):205-211

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Antisporulant activity of 8-hydroxyquinoline and its 5- and 6-n-alkyl derivatives against Gloeosporium fructigenum berk     

B. Sneh  D. R. Clifford  A. T. K. Corke 《Pest management science》1972,3(4):433-441

The antisporulant activities of 8-hydroxyquinoline (oxine) and members of the homologous 5- and 6-n-alkyloxine series against Gloeosporium fructigenum at varying ambient pH values and in the presence or absence of added Cu²⁺, Zn²⁺ and Fe²⁺ are described. Whilst changes in the pH value only influenced the antisporulant activity of oxine at low concentrations, lowering the ambient pH increased considerably the activities of the 5- and 6-alkyl isomers at all concentrations. Below pH 7.0 the addition of these ions to the oxines resulted in decreased antisporulant activity (Fe²⁺ > Zn²⁺ > Cu²⁺) whereas, at pH 8.0, the addition of Cu²⁺ increased the activity of some oxines. It is suggested that at low pH (3.2) the oxine cation is an important toxicant.  相似文献   

Hoofbeats Of The Past          下载免费PDF全文

Clifford H. Eby 《Canadian journal of veterinary research》1957,21(10):330-331

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Eradication of over-wintering mildew (Podosphaera leucotricha) in apple buds by nitrogen-containing surfactants     

Derek R. Clifford  Peter Gendle  Margaret E. Holgate  Malcolm Lulham 《Pest management science》1981,12(5):509-514

The eradicant activities of 24 nitrogen-containing preparations, comprising primary, secondary or tertiary amines, amine acetates, diamines, amine oxides or quaternary ammonium salts, were assessed in trials with potted dormant apple rootstocks, heavily infected with the powdery mildew fungus Podosphaera leucotricha. The surfactants consisted of mixtures in which C₁₂/C₁₄ or C₁₆/C₁₈ alkyl or alkenyl compounds predominated. Of the amine acetates (at 50g litre^?1), only the formulation containing C₁₂/C₁₄ primary amine acctates was considered worthy of further evaluation. Some amine oxides and quaternary ammonium compounds (at 35 g litre^?1) were good eradicants and were as effective as ‘PP222’ a (nonylphenol-ethoxylate mixture) which was included for comparison. All the compounds showing good activity contained one C₁₂/C₁₄ alkyl group whereas C₁₆/C₁₈ compounds, whether saturated or unsaturated, were relatively inactive. In a field trial, C₁₂/C₁₄ (dimethyl) amine oxide, C₁₂/C₁₄bis (2-hydroxyethyl) amine oxide, and C₁₂/C₁₄ amine acetate (35 g litre^?1) greatly reduced the amount of primary mildew on trees that were previously heavily infected, but there were signs that the fruit yield was reduced.  相似文献   

Surfactants for the control of apple mildew     

Derek R. Clifford  Eric C. Hislop 《Pest management science》1975,6(4):409-418

Reduction of the overwintering powdery mildew fungus Podosphaera leucotricha resulted from one application of a variety of surfactants (at 50 g/litre a.i.) to apple trees during the dormant season. Examples of non-ionic, anionic and cationic materials were tested and some gave promising control. Successful treatments delayed bud burst during the following spring and caused some loss in fruit yield.  相似文献