The uptake and translocation of 2,4,5-T in gorse (Ulex emopaeus L.)     

PHUNG HONG-THAT  ROGER J. FIELD 《Weed Research》1979,19(1):51-57

The uptake of 2,4,5-T by spines of gorse (Ulex europaeus L.) was limited and not enhanced when picloram was added to the application solution. Translocation of 2,4,5-T in 6-month-old cuttings after treatment of a single spine or lateral branch was poor. The most significant accumulation of translocated herbicide occurred in stem tissue, with lesser amounts detected in root tissues, root nodules, stem apices and flowers. Untreated lateral branches or spines accumulated minimal amounts of herbicide. The pattern and extent of distribution of 2,4,5-T was not increased by addition of picloram. The lack of efficient control of gorse by 2,4,5-T can largely be attributed to its inadequate uptake and lack of true systemic translocation.  相似文献   

Adenoviral bronchopneumonia of guinea pigs     

I.E. HARRIS  B.H. PORTAS  W. GOYDICH 《Australian veterinary journal》1985,62(9):317-317

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Mechanical Testing and Evaluation of Eight Synthetic Casting Materials     

KENNETH E. BARTELS dvm  MS  ROGER C. PENWICK VMD    LYN J. FREEMAN dvm  RICHARD L. LOWERY PhD    TOM ALEXANDER BS    KENT APPLEMAN BS  CATHRYN BLOUNT BS 《Veterinary surgery : VS》1985,14(4):310-318

Eight synthetic casting materials were evaluated with respect to tensile and fatigue strengths, exothermicity (evolution of heat during polymerization), permeability (porosity), radiolucency, and cost. Strength determination for a five-layer sample included measurement of the ultimate load at which a material failed, the ability to absorb energy, and the stiffness a material possessed after application of a cyclic stress. Results indicated that Vet Cast was superior with respect to tensile and fatigue strengths. The exothermic reaction associated with the "curing" or polymerization process was evaluated and not considered excessive although Ultra Cast attained a temperature of 48.0°C and was uncomfortable to handle during application. Permeability was determined. Delta Lite and Hexcelite NS were the most permeable materials and dried more rapidly and thoroughly after immersion than the other casting materials. Hexcelite NS was considered the least radiolucent material and was the most expensive material studied. Each of the synthetic casting materials demonstrated superiority in one or more of the categories tested. No one product demonstrated consistent superiority in criteria appropriate for clinical application.  相似文献   

A simple vaporizing device for the attainment of bactericidal concentrations of glycol vapors in air     

HARRIS TN  STOKES J 《Science (New York, N.Y.)》1946,104(2705):423-425

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Adaptation to displaced vision: visual,motor, or proprioceptive change?     

HARRIS CS 《Science (New York, N.Y.)》1963,140(3568):812-813

After seeing his hand through wedge prisms, a subject points incorrectly with that hand at auditory as well as visual targets. The other hand is virtually unaffected. Thus the change cannot be solely visuo-motor or visual. Other evidence suggests that it is a change in felt hand location, rather than motor learning. When the subject's adapted hand feels as if it is pointing straight ahead, for example, it is actually pointing off to one side.  相似文献   

Identification of the so-called "lard factor" as vitamin A     

AMES SR  HARRIS PL 《Science (New York, N.Y.)》1954,120(3114):391-393

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Prokinetic effects of cisapride, naloxone and parasympathetic stimulation at the equine ileo-caeco-colonic junction   总被引：3，自引：0，他引：3  

Y. RUCKEBUSCH  T. ROGER 《Journal of veterinary pharmacology and therapeutics》1988,11(4):322-329

The electromyogram of the terminal ileum, the caecum and the proximal right ventral colon was recorded in fasted conscious ponies receiving intravenously equiactive doses of pilocarpine (0.05 mg/kg) and carbachol (0.01 mg/kg) as acetylcholine analogues; cisapride (0.1 mg/kg) and metoclopramide (2 mg/kg) facilitating acetylcholine release from myenteric neurones and naloxone (0.05 mg/kg) as an antagonist of the endogenous inhibitory opioid system. Both cisapride and naloxone induced typical migrating spike bursts in the colon associated with contractions of caecal body and caecal base. Both pilocarpine and carbachol stimulated the terminal ileum but had opposite effects on the activity of the caeco-colonic segment which was decreased by pilocarpine and increased by carbachol. High doses of metoclopramide had weak and unspecific stimulatory motor effects. It is concluded that a true prokinetic effect at the equine ileo-caeco-colonic junction requires a motor profile which includes coordination between contractions sequentially involving the body and the base of the caecum and migrating spike bursts on the proximal colon. Such changes in the motor profile were produced by cisapride and naloxone and to a lesser extent by carbachol.  相似文献   

Standards for Clostridium chauvoei vaccine—The relationship between the response of guinea pigs and sheep following vaccination and challenge with virulent C. chauvoei     

R. CRICHTON  D A HARRIS  D J McKAY 《Australian veterinary journal》1986,63(3):68-70

Twelve commercial 5-component clostridial vaccines with known variations in potency of the blackleg (Clostridium chauvoei) component, were simultaneously tested in sheep and guinea pigs. Controlled challenge experiments provided evidence of a highly significant correlation in the response of the 2 species. The guinea pig laboratory model is considered to be a valid indicator of field performance for vaccines containing blackleg antigen.  相似文献   

A combination of neomycin sulfate and polymyxin B sulfate for bovine mastitis     

CHRISTIAN AB  HARRIS JR  BARR FS 《Journal of the American Veterinary Medical Association》1954,125(931):299-300

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Clinical and Pathologic Effects of a Modified Technique for Application of Spiral Prostheses to the Cervical Trachea of Dogs   总被引：1，自引：0，他引：1  

BONNIE E. COYNE dvm  ms    ROGER B. FINGLAND dvm  MS  acvs    GEORGE A. KENNEDY dvm  PhD  acvp  RICHARD M. DEBOWES dvm  ms  acvs 《Veterinary surgery : VS》1993,22(4):269-275

A modified surgical technique for application of extraluminal polypropylene spiral prostheses (PSP) to the trachea was developed. A portion of the segmental blood supply to the collapsed segment of trachea was maintained by fenestrating rather than completely dissecting the right lateral pedicle. Polypropylene spiral prostheses were applied to the cervical trachea of 12 dogs (group I) via the modified technique and to 12 dogs (group II) with the identical surgical dissection but without PSP applied. Clinical abnormalities included mild coughing in group I dogs and swelling of the incisions in both groups. Limited necrosis and moderate degeneration and inflammation were observed histologically in both groups. Pathologic changes were worse in the caudal cervical segment of the trachea. Mucosal regeneration was present on day 10 in both groups. Transmural tracheal necrosis was not observed. The modified technique for application of PSP is recommended by the authors because it provides adequate surgical exposure and the blood supply preserved by segmentally dissecting the right lateral pedicle is adequate to maintain tracheal viability.  相似文献