scholarly journals Factors affecting mutational specificity induced by ionizing radiation and oxidizing radicals

1992 ◽  
Author(s):  
B. Strauss
Keyword(s):  
Ionizing Radiation ◽  
Factors Affecting ◽  
Mutational Specificity

Hygienic assessment of learning environment conditions (by the example of higher educational institutions of the city of Ufa)

2020 ◽  
Vol 99 (4) ◽  
pp. 405-411
Author(s):  
Elena Ju. Gorbatkova
Keyword(s):  
Ionizing Radiation ◽  
Educational Institutions ◽  
Higher Educational Institutions ◽  
Factors Affecting ◽  
Republic Of Bashkortostan ◽  
Average Relative Humidity ◽  
Higher Educational ◽  
The Republic ◽  
And Performance ◽  
The City

Introduction. The important factors affecting health and performance of young people are the conditions of education, in particular, a comfortable microclimate in the classrooms of higher educational institutions. Materials and methods. In view of the urgency of this problem, an analysis was made of the microclimate parameters of educational organizations of different profiles (Ufa city, the Republic of Bashkortostan). 294 classrooms were studied in 22 buildings of 4 leading universities in Ufa. A total of 3,822 measurements were taken to determine the parameters of the microclimate. The analysis of ionizing radiation in the aerial environment of classrooms. There was performed determination of radon and its affiliated products content. In order to assess the conditions and lifestyle of students of 4 higher educational institutions of the city of Ufa, we conducted an anonymous survey of 1,820 students of I and IV years of education. Results. The average temperature in the classrooms of all universities studied was 23.9±0.09 C. The average relative humidity in all classrooms was 34.2 ± 0.42%. Analysis of ionizing radiation (radon and its daughter products decay) in the aerial environment of the classrooms and sports halls located in the basement determined that the average annual equivalent equilibrium volumetric activity of the radon daughter products (EROA ± Δ222Rn) ranged from 28 ± 14 to 69 ± 34.5 meter, which meets the requirements established by SanPiN. Conclusion. The hygienic assessment of the microclimate parameters of educational institutions of various profile revealed a number of deviations from the regulated norms. The results indicate the need to control the parameters of the microclimate, both from the administration of universities, and from the professors. According to the results of the study, recommendations were prepared for the management of higher educational institutions in Ufa.

scholarly journals HYGIENIC EVALUATION OF ILLUMINATION INDICES AND NON-IONIZING RADIATION AT EDUCATIONAL SITES OF HIGH SCHOOLS

2020 ◽  
Vol 99 (2) ◽  
pp. 152-157
Author(s):  
Elena Yu. Gorbatkova ◽  
T. R. Zulkarnaev ◽  
Z. A. Khusnutdinova ◽  
U. Z. Ahmadullin ◽  
A. A. Kazak ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Educational Institutions ◽  
Educational Organizations ◽  
Higher Educational Institutions ◽  
Factors Affecting ◽  
Republic Of Bashkortostan ◽  
Higher Educational ◽  
The Republic ◽  
The Government ◽  
Made In

One of the significant factors affecting the condition of the students’ visual apparatus is an illumination level in the premises of educational organizations. Electromagnetic radiation arising from computers also has an essential influence on a state of health. Taking into account the urgency of this problem, an analysis of illumination indices and EM radiation was made in audiences of higher educational institutions of various profiles (Ufa, the Republic of Bashkortostan). The total number of illumination measurements was 3528. The measurement methods met the requirements of the interstate standard. According to the results of the illumination indices estimation in the studied universities, a significant deviation from the regulated norms was revealed: in 71.5% of the measurements the index was below the norm. It should be noted that indices differed significantly depending on the type of educational organization. The best situation is in the “Financial University under the Government of the Russian Federation,” where only 13.3% of the measurements are inconsistent with the normative indices. Pulsation coefficient also was determined. It turned out that 88.8% of the measurements do not correspond to the norm. The analysis of illumination measurements in computer classes was carried out. Only one-fifth of them in the computer table working area in the of the document placement corresponded to SanPin. An anonymous questionnaire was also organized for students from four leading universities in Ufa, the Republic of Bashkortostan. According to respondents’ answers, out of seven students, one was revealed to be suffering from myopia. On the basis of “Center for Hygiene and Epidemiology in the Republic of Bashkortostan”, a study of non-ionizing radiation from video terminals located in computer classes was made. 1145 measurements were made in 20 buildings of four universities studied. It was found out that the intensity of the electrostatic field did not meet the requirements of SanPiN in 5.7% of the measurements. Hygienic assessment of the environment of educational organizations of various profiles revealed a number of significant deviations from the regulated norms. The obtained results testify to the need to monitor the illumination and EMR indices both from the administration of higher education institutions and from teachers. Based on the results of the study, recommendations were prepared for the management of higher educational institutions in Ufa.

scholarly journals Hygienic assessment of learning environment conditions (by the example of higher educational institutions of the city of Ufa)

2020 ◽  
Vol 99 (4) ◽  
pp. 405-411
Author(s):  
Елена Юрьевна Горбаткова
Keyword(s):  
Ionizing Radiation ◽  
Educational Institutions ◽  
Higher Educational Institutions ◽  
Factors Affecting ◽  
Republic Of Bashkortostan ◽  
Average Relative Humidity ◽  
Higher Educational ◽  
The Republic ◽  
And Performance ◽  
The City

Introduction. The important factors affecting health and performance of young people are the conditions of education, in particular, a comfortable microclimate in the classrooms of higher educational institutions. Materials and methods. In view of the urgency of this problem, an analysis was made of the microclimate parameters of educational organizations of different profiles (Ufa city, the Republic of Bashkortostan). 294 classrooms were studied in 22 buildings of 4 leading universities in Ufa. A total of 3,822 measurements were taken to determine the parameters of the microclimate. The analysis of ionizing radiation in the aerial environment of classrooms. There was performed determination of radon and its affiliated products content. In order to assess the conditions and lifestyle of students of 4 higher educational institutions of the city of Ufa, we conducted an anonymous survey of 1,820 students of I and IV years of education. Results. The average temperature in the classrooms of all universities studied was 23.9±0.09 C. The average relative humidity in all classrooms was 34.2 ± 0.42%. Analysis of ionizing radiation (radon and its daughter products decay) in the aerial environment of the classrooms and sports halls located in the basement determined that the average annual equivalent equilibrium volumetric activity of the radon daughter products (EROA ± Δ222Rn) ranged from 28 ± 14 to 69 ± 34.5 meter, which meets the requirements established by SanPiN. Conclusion. The hygienic assessment of the microclimate parameters of educational institutions of various profile revealed a number of deviations from the regulated norms. The results indicate the need to control the parameters of the microclimate, both from the administration of universities, and from the professors. According to the results of the study, recommendations were prepared for the management of higher educational institutions in Ufa.

Alterations in the rat forebrain apoptosis following exposure to ionizing radiation

Biologia ◽  
2011 ◽  
Vol 66 (4) ◽  
Author(s):  
Soňa Bálentová ◽  
Eva Hajtmanová ◽  
Yvetta Mellová ◽  
Ľudmila Bošelová ◽  
Elena Fuseková ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Apoptotic Cell ◽  
Adult Brain ◽  
Whole Body ◽  
Initial Increase ◽  
Normal Brain ◽  
Factors Affecting ◽  
Male Wistar Rats ◽  
Radiation Induced ◽  
Induced Apoptosis

AbstractIonizing radiation commonly used in the radiotherapy of brain tumours can cause adverse side effects to surrounding normal brain tissue. The most significant response of adult brain to radiation damage is induction of apoptosis. The adult mammalian subventricular zone (SVZ) of the brain lateral ventricles (LV) and their subsequent lateral ventricular extension, the rostral migratory stream (RMS), is one of the few areas, which retains the ability to generate new neurons and glial cells throughout life. Taking into account the fact, that ionizing radiation is one of the strongest exogenous factors affecting cell proliferation, the aim of the present study was to investigate the occurrence of radiation-induced apoptosis in this neurogenic region. Adult male Wistar rats were investigated 1, 5 or 10 days after single whole-body gamma irradiation with the dose of 3 Gy. Apoptotic cell death was determined by in situ labelling of DNA nick ends (TUNEL) and fluorescence microscopy evaluation of TUNEL-positive cells. Considerable increase of apoptotic TUNEL-positive cells was observed 24 hrs after irradiation in caudal parts of RMS; i.e. in the vertical arm and elbow of RMS. Initial increase was followed by strong reduction of apoptosis in the RMS and by secondary over-accumulation of apoptotic cells in the animals that survived ten days after exposure. Results showed, that the proliferating population of cells, arisen in SVZ are highly sensitive to radiation-induced apoptosis. This observation should have implications for clinical radiotherapy to avoid complications in therapeutic brain irradiation.

Factors Affecting Ionizing Radiation Phytosanitary Treatments, and Implications for Research and Generic Treatments

2010 ◽  
Vol 103 (6) ◽  
pp. 1950-1963 ◽  
Author(s):  
Guy J. Hallman ◽  
Nichole M. Levang-Brilz ◽  
J. Larry Zettler ◽  
Ian C. Winborne
Keyword(s):  
Ionizing Radiation ◽  
Factors Affecting

scholarly journals Investigation of factors affecting power density radiation of mobile phones

2020 ◽  
Vol 9 (1) ◽  
pp. 223
Author(s):  
Ilesanmi B. Oluwafemi ◽  
Johnson O. Adeoye ◽  
Deji M. Faluru ◽  
Dorcas D. Obasanya
Keyword(s):  
General Population ◽  
Ionizing Radiation ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Cell Phone ◽  
Reference Level ◽  
Population Exposure ◽  
Radiation Level ◽  
Factors Affecting ◽  
Mobile Phone Radiation

The use of mobile phones in Nigeria has greatly increased in the recent year. This has also increased the general population exposure to mobile phone radiation. In this research, the intensity of radiation around selected mobile phones base on some factors are investigated using Radiofrequency Meter (RF) TM-96, 9V DC and Spectrum Analyzer (NA-773, 144/430 MHz) in a bid to confirm how they affect the radiation level. Measurements were taken at distances of 5 cm from the mobile phones when seeking for connections, calls establishing and calls connections under different conditions such as periods of the day, when charging and when not charging, battery charged levels, single and dual SIMs and network signal levels. The radiation levels from the 5 selected mobile phones ranges from 0.3204 to 0.4824 mW/cm2 during call conversation, with the highest radiating mobile phone being Asus while the least was Infinix 3. The radiation levels of these mobile phones are above the International Commission on Non-ionizing Radiation Protection (ICNIRP) reference level, 0.45 mW/cm2. Results also shows that the cell phone battery level, network signal level, the number of inserted SIM cards increases the radiation level of the mobile phones.  

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