Male and female F-344 rats and B6C3F1 mice (10/sex/group) were exposed to N,N-dimethylformamide (DMF) by whole body inhalation exposure at 0, 50, 100, 200, 400, or 800 ppm, 6 h/day, 5 days/week, for 13 weeks. A concentration-dependent depression in body weight occurred in rats of both sexes at 400 (6-11%) and 800 ppm (20-22%). In contrast, all weight changes in both sexes of mice were within 10...

Histomoniasis or blackhead disease is a life-threatening disease of turkeys that is caused by a flagellated protozoan, Histomonas meleagridis. Currently metronidazole and nitarsone are used commonly against blackhead disease in Pakistan. Initially we tested the sensitivity of H. meleagridis collected from field outbreak in turkey to metronidazole (Flagyl®) and nitarsone (Histostat-50TM®) using ...

AIMS To characterize the relationship between the sucrose- and ethanol-reinforced behaviour in Wistar rats. METHODS Subjects (n = 31) were trained to lever press for 8% (v/v) ethanol in an operant procedure where increasing concentrations of ethanol were introduced in the presence of 8% (w/v) sucrose. The sucrose concentration was subsequently decreased from 8 to 0%. Subjects were allowed to ...

Chloroform is being administered to male Osborne-Mendel rats and to female B6C3F1 mice at concentrations of 0 (negative control), 200, 400, 900 or 1800 ppm in the drinking water. Matched control groups of both species receive a volume of water identical to that consumed by the corresponding 1800 ppm groups. At this writing, the animals have completed 23 months on test. Negative control and CHCl...

Two Clostridium botulinum type A toxic fractions, named large (L) and medium (M) toxins, were eluted from Sephadex G-200. Sucrose density gradient centrifugation resolved L toxin (2.5 X 10(8) to 3.0 X 10(8) mean lethal doses per mg of N) into two fractions, 19S and 16S. The same procedure performed at pH 8resolved it into three fractions; the heavier two were both nontoxic and hemagglutinin pos...

OBJECTIVE The goal of this study was to compare the analgesic effect of sucrose with that of the combination of sucrose and the local anesthetic cream EMLA during venipuncture in preterm neonates. METHODS This randomized, double-blind prospective study included infants younger than 37 weeks' gestational age during 1 routine venipuncture for blood sampling. Each child randomly received either ...

Short vase life and post-harvest losses of cut flowers are major threat to floriculture industry. There different preservative solutions that have been used extend the flowers. Hence, this study was executed at Floriculture laboratory Ayub Agricultural Research Institute, Faisalabad during 2018-2020 explore efficacy on quality roses. were 6 treatments viz, (T1= Distilled water, T2= Silver nitra...

Amorphous indium gallium zinc oxide (a-IGZO) powder was prepared by typical solution-based process and post-annealing process. The sample was used as sensor for detecting C₂H₅OH, H₂, and CO. Gas-sensing performance was found to be highly sensitive to C₂H₅OH gas in a wide range of concentration (0.5-1250 ppm) with the response of 2.0 towards 0.5 ppm and 89.2 towards 1250 ppm. Obvious difference ...

Steam distillation of essential oils of aerial parts of Thymus capitatus and Marrubium vulgare L. collected at North cost of Egypt yielded 0.5% and 0.2%, respectively. Results of Gas chromatography-mass spectrometry analyses of the two samples identified 96.27% and 90.19% of the total oil composition for T. capitatus and M. vulgare, respectively. The two oil samples appeared dominated by the ox...