[en] Published in summary form only

[en] Herein, has been presented the results of petroleum crude oil isomerization and also investigated the dynamics of dose-dependent changes in the number of isostructural hydrocarbons. It has been shown, that the main reasons for the change of its form under radiation are the configuration distortion of the n hydrocarbon structure of crude oil, the conformation transformation and reorientation of some sections of petroleum molecules and weakening of inter modular interaction. By using the method of reflection absorption IR and EPR spectroscopy, the possible mechanism of radio-catalytic reaction for the conversion of n-alkanes to branched hydrocarbons at low dose irradiation has been discussed

[en] In the examined dose-range (200-1600 rad) the gamma irradiation, before the incubation of 5095 duck eggs, reduced the hatching results. The body weight and feed efficiency of the hatched individuals did not change. The issue-generations did not exhibit any consequent changes neither in the hatching results nor in the body weight and feed efficiency. (author)

No abstract available

No abstract available

[en] Short communication

[en] A brief article reviews the published information on low dose radiation carcinogenesis. The studies range from A-bomb survivors, radiation workers, children of radiation workers and children subjected to medical X-ray doses. It is argued that the data are probably only reconcilable if the contention is that foetal tissue has a higher susceptibility to radiation. (UK)

No abstract available

[en] The National Institute of Environmental Health Sciences, a subsidiary of the Food and Drug Administration, has declared that X-ray radiation at low doses is a human carcinogen. The purpose of our study was to determine if informed consent should be obtained for communicating the risk of radiation-induced cancer from radiation-based imaging. Institutional review board approval was obtained for the prospective survey of 456 physicians affiliated with three tertiary hospitals by means of a written questionnaire. Physicians were asked to state their subspecialty, number of years in practice, frequency of referral for CT scanning, level of awareness about the risk of radiation-induced cancer associated with CT, knowledge of whether such information is provided to patients undergoing CT, and opinions about the need for obtaining informed consent as well as who should provide information about the radiation-induced cancer risk to patients. Physicians were also asked to specify their preference among different formats of informed consent for communicating the potential risk of radiation-induced cancer. Statistical analyses were performed using the chi-squared test. Most physicians stated that informed consent should be obtained from patients undergoing radiation-based imaging (71.3%, 325/456) and the radiology department should provide information about the risk of radiation-induced cancer to these patients (54.6%, 249/456). The informed consent format that most physicians agreed with included modifications to the National Institute of Environmental Health Services report on cancer risk from low-dose radiation (20.2%, 92/456) or included information on the risk of cancer from background radiation compared to that from low-dose radiation (39.5%, 180/456). Most physicians do not know if patients are informed about cancer risk from radiation-based imaging in their institutions. However, they believe that informed consent for communicating the risk of radiation-induced cancer should be obtained from patients undergoing radiation-based imaging. (orig.)

No abstract available