Radioiodine and Paper Chromatography Technique in the Study of Thyroid Metabolism     

Tishkoff GH  Bennett R  Bennett V  Miller LL 《Science (New York, N.Y.)》1949,110(2861):452-454

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Russian science. New rules on foreign contacts resurrect cold war-era distrust     

Pokrovsky V  Kokurina E 《Science (New York, N.Y.)》2001,292(5523):1810

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Philanthropy. Russian billionaires launch science fund     

Pokrovsky V  Allakhverdov A  Astvatsaturyan M 《Science (New York, N.Y.)》2001,291(5510):1878

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Astrophysics. New headaches for U.S.-Russia experiment     

Pokrovsky V  Allakhverdov A 《Science (New York, N.Y.)》2001,291(5508):1470

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Comparison of oil and phytosterol levels in germplasm accessions of corn, teosinte, and Job's tears     

Moreau RA  Singh V  Hicks KB 《Journal of agricultural and food chemistry》2001,49(8):3793-3795

Seeds of 49 accessions of corn (Zea mays ssp. mays), 9 accessions of teosinte (Zea species that are thought to be ancestors and probable progenitors to corn), and 3 accessions of Job's tears (Coix lacryma), obtained from a germplasm repository, were ground and extracted with hexane. Whole kernel oil yields and levels of four phytonutrients (free phytosterols, fatty acyl phytosterol esters, ferulate phytosterol esters, and gamma-tocopherol) in the oils were measured. Among the seeds tested, oil yields ranged from 2.19 to 4.83 wt %, the levels of ferulate phytosterol esters in the oil ranged from 0.047 to 0.839 wt %, the levels of free phytosterols in the oil ranged from 0.54 to 1.28 wt %, the levels of phytosterol fatty acyl esters in the oil ranged from 0.76 to 3.09 wt %, the levels of total phytosterols in the oil ranged from 1.40 to 4.38 wt %, and the levels of gamma-tocopherol in the oil ranged from 0.023 to 0.127 wt %. In general, higher levels of all three phytosterol classes were observed in seed oils from accessions of Zea mays ssp. mays than in seed oils from accessions of the other taxonomic groups. The highest levels of gamma-tocopherol were observed in teosinte accessions.  相似文献   

Oxytetracycline residues in giant freshwater prawn (Macrobrachium rosenbergii)     

Brillantes S  Tanasomwang V  Thongrod S  Dachanantawitaya N 《Journal of agricultural and food chemistry》2001,49(10):4995-4999

The distribution of oxytetracycline (OTC) in male and female Macrobrachium rosenbergii was examined after the prawns had been given medicated feed containing OTC at levels of 2.5 and 5.0 g/kg of feed for 1 week and nonmedicated feed thereafter. OTC levels in the heads of both male and female prawns were consistently higher than in the muscles. Batches of both male and female prawns treated with higher dosages had significantly higher OTC residues in both head and muscle tissues than the batches treated with lower dosages. During treatment, peak concentrations in the head and muscle from each group were reached within 4-6 days. After drug treatment ceased, 13 days for the head and 10 days for the muscle were required to reduce OTC residues to safe levels in all batches of both sexes and dosages. In practice, to account for variations in water temperature, drug dosage, duration of therapy, and other environmental conditions, a withdrawal period of 21 days is recommended.  相似文献   

Atypical parasitic migration and necrotizing sacral myelitis due to Serratospiculoides amaculata in a prairie falcon (Falco mexicanus)     

Hawkins MG  Couto S  Tell LA  Joseph V  Lowenstine LJ 《Avian diseases》2001,45(1):276-283

An adult, wild-caught, female prairie falcon (Falco mexicanus) was presented with the chief complaint of anorexia. Radiographic findings included increased densities within the air sacs, and coelomic endoscopy revealed numerous slender worms within the air sacs and on the serosal surfaces of the ovary, oviduct, liver, proventriculus, and ventriculus. The bird seemed to improve for a short period of time with antiparasitic therapy (ivermectin and fenbendazole) and supportive care. Twenty-one days after initial presentation, the bird became recumbent with increasing pelvic limb neurologic deficits and was euthanized. On histopathologic examination, mature nematodes and larvated eggs identified as Serratospiculoides amaculata were found within the subdural space of the distal thoracolumbar and synsacral spinal cord and within the coelomic cavity. This case suggests that S. amaculata can cause clinically significant lesions in its falconiform host with potentially fatal results.  相似文献   

Functional development of small intestine of Japanese quail hatched on MIR orbital station     

Lenhardt L  Cigankova V  Zibrin M  Kocisova J  Tomkova I  Sabo V  Boda K  Dadasheva OA  Gurieva TS  Mozes S 《Acta veterinaria》2001,70(2):127-131

The effect of microgravity on functional development of the small intestine of Japanese quails incubated for 2-3 d and hatched on the orbital station MIR was examined. After 5 d of space flight duodenal and jejunal alkaline phosphatase (AP) activity of the experimental group was compared with the AP activity in quails of the same age hatched on the Earth (laboratory controls). Short-term microgravity leading to decreased food intake resulted in significant increase of AP activity in both duodenal and jejunal enterocytes (P<0.001) of the experimental quails. The results suggest that increased AP activity probably reflects the delayed functional development of the small intestine as a consequence of inappropriate food intake during non-physiological conditions of space flight.  相似文献   

Ultrasound-guided percutaneous drainage for treatment of pyonephrosis in two dogs     

Szatmári V  Osi Z  Manczur F 《Journal of the American Veterinary Medical Association》2001,218(11):1796-9, 1778-9

Pyonephrosis refers to suppurative destruction of the parenchyma of the kidney with complete or nearly complete loss of renal function. In dogs, nephrectomy is still the most common treatment for pyonephrosis; however, in the present report, a method for percutaneous ultrasound-guided drainage of the renal pelvis in dogs with pyonephrosis that does not require local or general anesthesia was described, and results of the procedure in 2 dogs were reported. Briefly, dogs were positioned in lateral recumbency with the affected side up, and skin overlying the affected kidney was aseptically prepared. The dilated renal pelvis was punctured percutaneously, under ultrasound guidance, with a 22-gauge needle, and a sample of material was obtained for analysis. The needle was then replaced with an IV catheter, and as much pus as possible was removed from the renal collecting system. A povidone iodine solution was then used to lavage the renal pelvis. Ultrasound-guided drainage and lavage of the renal pelvis was repeated daily until the renal pelvis was so small that it could no longer be punctured. Both dogs recovered and were reported by the owners to be healthy after the procedure.  相似文献   

Occurrence of Escherichia coli O157 in reindeer (Rangifer tarandus)     

Lahti E  Hirvelä-Koski V  Honkanen-Buzalski T 《The Veterinary record》2001,148(20):633-634

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