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Results 351 - 370 of 370
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Ogbadu G - - 1980
Spores of Aspergillus flavus (UI, 81) inoculated into some local food materials were irradiated at 62.5, 125.0, 250.0 and 500.0 krad, and the effect on aflatoxin B1 production on subsequent incubation was measured. The results show that aflatoxin B1 production decreased with increasing gamma irradiation dose in soya bean, groundnut, ...
Ford J L - - 1979
Thin layer chromatography followed by reflectance densitometry has been used to evaluate the stability of chlorpropamide-urea during the fusion process. Urea was found to decompose to biuret and chlorpropamide to p-chlorobenzenesulphonamide: several other unidentified decomposition products were detected. The energy for decomposition of chlorpropamide was 57.1 kJmol-1 for melts containing ...
Torgalkar A M - - 1979
A resonance frequency technique was applied to determine the elastic modulus of hydroxyapatite. A Free-Free Vibration Transducer was designed to determine elastic modulus in a longitudinal direction. A Fixed-Free Vibration Transducer was also designed to study elastic modulus of materials were specimens longer than 3 cm in length were not ...
Reddy S J - - 1979
The effect of gamma irradiation (60Co) of different varieties and breeding lines of dry field beans (Phaseolus vulgaris) on chick growth was determined using a chick growth assay in which the diet contained approximately 50% beans. Total protein (N X 6.25) in beans was not changed appreciably by irradiation (21 ...
Hopwood D A - - 1979
The optimum concentration of polyethylene glycol 1000 (PEG) for the production of recombinants through protoplast fusion in Streptomyces coelicolor was about 50% (w/v). The addition of 14% (v/v) dimethyl sulphoxide to the fusion mixture enhanced recombination frequencies, but only at sub-optimal PEG concentrations. After treatment of protoplasts with 50% PEG ...
Schlaepfer W W - - 1978
Intact mammalian neurofilaments were separated by centrifugation of osmotically shocked, desheathed segments of rat peripheral nerve. Neurofilament-rich supernates were incubated in different media with varying dilutions or dialysis of samples. Neurofilaments attached to carbon-Formvar-coated grids were exposed to similar incubations. The relative preservation or disruption of neurofilaments during different incubational ...
Heins H G - - 1978
When an irradiated human food item is considered to be feasible for commercialization, two obstacles are still to be taken: governmental approval and consumer acceptance. The present Dutch situation is compared to recent developments towards approval of the technique by international authorities. The effect of this approval and of the ...
Shapiro B I - - 1977
The nature of the block of potassium conductance by strychnine in frog node of Ranvier was investigated. The block is voltage-dependent and reaches a steady level with a relaxation time of 1 to several ms. Block is increased by depolarization or a reduction in [K+]O as well as by increasing ...
Léonard A - - 1977
Male and female mice from BALB/c strain received normal food or food irradiated with a mean dose of about 2.85 Mrad of gamma-rays. Three different tests were performed on mice fed for one month with control or irradiated pellets: estimation of prenatal loss and examination of somatic and male germ ...
Halberg F - - 1977
The fact that many bodily functions display rhythmicity has an important bearing on resistance to toxins, response to drug or irradiation, and weight gain or loss according to when food is ingested. Though considerable clinical research remains to be done, "chronobiology" has already made available techniques for establishing predictable human ...
Carter A C - - 1976
MAGNESIUM oxide containing impurity levels of 130-1,400 p.p.m. Ni was investigated for use as a gamma-radiation dosimeter, and compared with the widely used LiF (TLD-100). Other samples of MgO containing B, Cr, Fe and Co were also tried but none possesses the required characteristics. It has previously been shown(1) that ...
Jardine J H - - 1975
Twenty-five rhesus monkeys were randomly assigned to one of five treatment schedules: 1. control group, no irradiation, 2. 60Co five times weekly, 3. 60Co twice weekly, 4. 16-MeVd leads to Be neutrons twice weekly, and 5. 50-MeVd leads to Be neutrons twice weekly. Although the acute reactions were similar in ...
Schubert J - - 1969
The preservation of foods by treatment with ionizing radiation can significantly increase the world's food resources by reducing spoilage and waste. However, irradiation can bring about chemical transformations in food and food components resulting in the formation of potential mutagens, particularly hydrogen peroxide and various organic peroxides. In order to ...
Rausch H - - 1968
Destructive and non-destructive activation analysis for selenium and tellurium has been studied. In destructive analysis the selenium and tellurium activities are co-extracted from the irradiated and dissolved matrix elements with dithizone/CCl(4), reagent in a hot-chamber by remote manipulation, then separated from each other by diethylammonium-N,N-diethyldithiocarbamate/CCl(4) extraction, tellurium going into the ...
Shiflett M A - - 1967
Salmonella typhimurium and S. enteritidis were inoculated into blended oysters, both raw and autoclaved. The oysters were also treated with sodium benzoate (0.1%) or potassium sorbate (0.1%), and irradiated (0.1 Mrad). In both non-irradiated and irradiated samples, greater numbers of Salmonella were recovered after storage at 7 C in the ...
Revusky S H - - 1967
Rats were permitted to ingest a novel food and a familiar food. One hour later they were x-irradiated. When they were subsequently allowed to choose between these foods, their preference for the novel food was less than that exhibited by appropriate controls.
French N R - - 1966
The radiation dose detected by microthermoluminescent dosimeters attached to pocket mice,Perognathus formosus, indicated the amount of time these animals were active on the surface of the ground. Radiation was from anelevated, partially shielded source in the center of the 8-hectareenclosure. The rodents are almost entirely inactive in midwinter but spend ...
ROSEN I B - - 1964
The features of radiation injury of the small bowel are reviewed to focus attention on this uncommon but persistent problem which usually arises in women undergoing treatment for gynecological malignancy and which may be confused with recurrence of the malignant growth. Intestinal perforation, bleeding, obstruction and fistulas have all been ...
TINSLEY, IAN J.
Rations containing 35% control or irradiated (37,200 and 74,400 rad) flour have been fed to four generations of rats. Statistical analysis of the data revealed no treatment effects with respect to growth, breeding or longevity. A study of the hematology data also indicated no treatment differences. It was of interest ...
DRAKE M P - - 1960
Experimental results indicate that sensory evaluations in different laboratories give equivalent results if standardized procedures and a standard sample are used. Conflicting results concerning the flavor of irradiated foods are due largely to different methods of evaluation and to incorrect interpretation of results. Unusual flavor due to irradiation should be ...
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