scholarly journals Formation of personality character accentuations in modern conditions of the increased electromagnetic radiation of radiofrequency range

2020 ◽  
pp. 42-46
Author(s):  
Liubov Serhieieva ◽  
Oleksandr Valchenko ◽  
Victoriya Serhieieva ◽  
Olena Hliebova
Keyword(s):  
Electromagnetic Radiation ◽  
Mobile Phones ◽  
Exposure Time ◽  
Electromagnetic Waves ◽  
Prolonged Exposure ◽  
Parasympathetic Nervous System ◽  
Psychological Research ◽  
Local Form ◽  
State University ◽  
Functional Examination

Psychological research was conducted according to the method of Shmishek on 204 volunteers — 1st year students of the State University of Telecommunications, who belonged to the 1—2st group of health. We studied the number of accentuations of the character of a person depen-ding on the exposure time of electromagnetic radiation in the radiofrequency range (EMF RF-range) from computers or mobile phones (smartphones and other gadgets). A statistically significant increase of 45 % was shown in the number of character accentuations from 3 to 6, with an exposure time of 9 to 15 years of EMF RF-range from mobile phones and smartphones. At the same time, the number of people who had up to 2 manifestations of cha-racter accentuations — had an advantage in the group of students with a lower exposure to EMR RF-range from mobile phones and smartphones for 5—8 years. Also, with the help of questionnaires and functional examination of students, when performing orthostatic tests, a positive correlation was found between the formation of vagotonic reactions of the cardiovascular system and the term of exposure to EMF RF-range in years. The prevailing of radiofrequencys from mobile phones was determined in the formation of increased functioning of the parasympathetic nervous system in the examined group of young people (at r xy = +0,962) was determined. Perhaps this correlation also has a pathogenetic significance: with the local form and prolonged exposure to EMR RF-range from mobile phones, they can not only stimulate the vagus nuclei of the medulla oblongata or increase the permeability of the blood-brain barrier, but also change mental processes. Key words: electromagnetic waves of the radiofrequency range, autonomic disorders, character accentuations

scholarly journals EFFEK SAMPING PENGGUNAAN PONSEL

2015 ◽  
Vol 17 (4) ◽  
Author(s):  
Enny Enny
Keyword(s):  
Electromagnetic Radiation ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Electromagnetic Waves ◽  
Cell Phone ◽  
Cell Phones ◽  
Mobile Users ◽  
A Cell ◽  
The Impact ◽  
Cell Phone Radiation

Enny, in this paper explain that many mobile phone users around the us, but only a portion of the concerned about the dangers of cell phones. This paper was compiled to determine the impact and solutions of cell phone radiation. Mobile phones emit electromagnetic waves which will affect the surrounding environment. Based on existing information, cell phone radiation is thought to cause cancer. Waves emitted from mobile phones over the air is causing electromagnetic radiation. Potential disrubtion of health consequences of radiation electromagnetic field has become an issue which examined till now, so found a variety of health disorders as a result of mobile phone users that includes the impact of mild and severe impact. Experts have discovered some efforts to minimize the effects of cell phone radiation on health of mobile phone users. Every user should know the dangers of mobile phone users. Radiation caused cell phone not only arise when used, but when putting a cell phone in your Pocket can also be exposed to any radiation. Therefore, mobile users need to know how to use a cell phone. Users should pay attention to the level of radiation caused by cell phones, so that the influence of electromagnetic radiation on health can be scaled down for mobile users. Keywords: side effects of cell phone use

Methods of experimental polyploidization and their use in apple breeding

2020 ◽  
Vol 62 ◽  
pp. 85-90
Author(s):  
L. V. Tashmatova ◽  
O. V. Matsneva ◽  
T. M. Khromova ◽  
V. V. Shakhov
Keyword(s):  
Exposure Time ◽  
Cell Walls ◽  
Prolonged Exposure ◽  
Ornamental Plants ◽  
Colchicine Treatment ◽  
Apple Trees ◽  
Open Ground ◽  
High Concentrations ◽  
Diploid Gametes

The article presents methods of experimental polyploidy of fruit, berry and ornamental plants. The purpose of this review is to highlight the problems and prospects of polyploidization of plants in the open ground and in vitro culture and the possibility of their application for apple trees. For the purpose of obtaining apple tetraploids as donors of diploid gametes, seed seedlings were treated with a solution of colchicine in concentrations of 0.1-0.4 % for 24 and 48 hours. Colchicine concentrations of 0.3 % and 0.4 % at 48 hours of treatment had a detrimental eff ect on their development. As a result, tetraploids and chimeras were obtained from seeds from free pollination of the varieties Orlik, Svezhest, Kandil Orlovsky, as well as from seeds obtained from crossing the varieties Svezhest×Bolotovskoe, Moskovskoe Оzherel’e×Imrus, Girlyanda×Venyaminovskoe. The optimal concentration of colchicine was 0.1 %. Methods of colchicine treatment have been studied: 1) adding to the nutrient medium, colchicine concentration: 0.01%, 0.02%, exposure time 24h-19 days; 2) applying amitotic solution to the growth point, colchicine concentration: 0.1 %, 0.2 %, exposure time 24h-7 days. To increase the penetration of colchicine through the cell walls, a 0.1 % dimexide solution was used. Studies have shown that high concentrations and prolonged exposure to colchicine reduce the viability of explants.

scholarly journals Effects of mobile phones electromagnetic radiation on patients with epilepsy: an EEG study

2020 ◽  
Vol 56 (1) ◽  
Author(s):  
Radwa Azmy ◽  
Reham Shamloul ◽  
Noha Abdalla Farag Elsawy ◽  
Saly Elkholy ◽  
Eman Maher
Keyword(s):  
Electromagnetic Radiation ◽  
Mobile Phones ◽  
Patients With Epilepsy

scholarly journals Impact of Prolonged Exposure of Eleven Years to Hot Seawater on the Degradation of a Thermoset Composite

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2154
Author(s):  
Amir Hussain Idrisi ◽  
Abdel-Hamid I. Mourad ◽  
Muhammad M. Sherif
Keyword(s):  
Exposure Time ◽  
Prolonged Exposure ◽  
Mechanical Performance ◽  
Matrix Cracking ◽  
Pull Out ◽  
Strength Based ◽  
Different Temperatures ◽  
River Line ◽  
Composite Samples

This paper presents a long-term experimental investigation of E-glass/epoxy composites’ durability exposed to seawater at different temperatures. The thermoset composite samples were exposed to 23 °C, 45 °C and 65 °C seawater for a prolonged exposure time of 11 years. The mechanical performance as a function of exposure time was evaluated and a strength-based technique was used to assess the durability of the composites. The experimental results revealed that the tensile strength of E-glass/epoxy composite was reduced by 8.2%, 29.7%, and 54.4% after immersion in seawater for 11 years at 23 °C, 45 °C, and 65 °C, respectively. The prolonged immersion in seawater resulted in the plasticization and swelling in the composite. This accelerated the rate of debonding between the fibers and matrix. The failure analysis was conducted to investigate the failure mode of the samples. SEM micrographs illustrated a correlation between the fiber/matrix debonding, potholing, fiber pull-out, river line marks and matrix cracking with deterioration in the tensile characteristics of the thermoset composite.

scholarly journals Fundamental approach to building a holistic concept of security psychology at Sochi state university

2020 ◽  
Author(s):  
Svetlana Teslya ◽  
Keyword(s):  
Basic Concept ◽  
Psychological Research ◽  
Psychological Status ◽  
Diagnostic Tools ◽  
Security Model ◽  
State University ◽  
Psychological Model ◽  
Security Issues ◽  
The Social ◽  
Holistic Concept

Relevance of the problem: the need to develop a new field of knowledge-security psychology, which could rely on the basic philosophical and psychological concept of security, methodologically, theoretically and practically able to provide a new field of knowledge integrative character. The purpose of the research: development of security psychology as a direction of fundamental socio-philosophical and psychological research. Hypothesis: it is possible to substantiate the psychological status of the concepts of "danger" and "security", which will give grounds to talk about their interdependence and as an experience-living; the "subjectivity model", "psychological model of subjectivity of a social subject", and "psychological model of security", which have never appeared before, can be introduced into the scientific plan of consideration, and set as the Central theme for the entire basic concept of security. Discussion of the results is divided into three blocks: (1) Deepening the methodological foundations of security psychology as a direction of socio-psychological research: approaches, principles, methods; (2) Formation of the conceptual framework of security psychology as a new field of knowledge; (3) Major problems that have been put forward and justified throughout the research. Conclusions: based on axiological, cultur-antropological, contextual, subjective, and synergetic approaches, a theoretical scheme of security psychology and its basic concept is constructed; seventeen key concepts were developed, with the help of which a thematic correction was made concerning the security issues and the formalization of security psychology; the diagnostic tools are developed that allow to conclude about the state of psychological security model of the social subject; a method of self-diagnosis of the ratio of their resources with the resources of significant others has been developed; a frame analysis of local variable functions of 4 subjectivity codes is presented; a model for diagnosing the content of the psychological model of subjectivity at the stage of acquiring a specific professional identity is presented; a resource concept of security and its empirical application to the problem of professional burnout is developed.

scholarly journals Description of difficulty on electricity and magnetism concepts of physics education students among cross academic level

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Rendy Wikrama Wardana ◽  
Liliasari Liliasari ◽  
Paulus Tjahyono Tjiang ◽  
Nahadi Nahadi
Keyword(s):  
Physics Education ◽  
Electromagnetic Waves ◽  
Learning Strategy ◽  
State University ◽  
Education Students ◽  
Master's Students ◽  
Academic Level ◽  
Electricity And Magnetism ◽  
Qualitative Descriptive ◽  
Essay Test

Some previous studies have shown that electricity and magnetism is one of the concepts of abstract, difficult, and complex. The purpose of the research illustrates the difficulties of academic cross-level physics education students on magnetic electrical concepts. Research used qualitative descriptive methods. The number of research samples is 103 students consisting of 73 the third year Bachelor’s Students of Physics Education and 30 Master’s Students of Physics Education in one of State University in Bandung City. Research instruments used essay-shaped tests and interview guides. Data collection was conducted by giving essay test adapted from Electromagnetic Concept Inventory test consisting of four major subconcepts namely: electrostatic, magnetics, electromagnetic induction and electromagnetic waves.  Data analysis was conducted by analyzing the test result data via the answer scale section and analysis of the interview results. The results of the study show interesting thing that the electrostatic subconcept is 3% for Bachelor’s Students of Physics Education and 6% for Master’s Students of Physics Education that answered questions correctly on the concept. In the sub-concept of electromagnetic waves, 7% of Bachelor’s Students of Physics Education and 6% for Master’s Students of Physics Education that answered correctly questions on the concept. The results indicate that most students ' cross-academic level difficulties were on electrostatic sub-concepts and electromagnetic waves that categorized the basic and upper concepts in magnetic electrical concepts. The results of the study give implications that the need to strengthen basic concepts and appropriate learning strategy in teaching the concept of magnetic electricity.

scholarly journals Preventive measures to reduce harmful effects produced by electromagnetic radiation on health

2021 ◽  
pp. 42-53
Author(s):  
Y. Stein ◽  
◽  
Keyword(s):  
Electromagnetic Radiation ◽  
Electromagnetic Waves ◽  
Preventive Measures ◽  
Biological Effects ◽  
Scientific Evidence ◽  
Base Stations ◽  
Power Lines ◽  
Thermal Safety ◽  
Low Frequencies ◽  
Safety Standards

Man-made electromagnetic waves are the most widely and rapidly expanding exposure in today's world, including exposure in several frequency groups: extremely low frequencies (ELF) from electricity lines, hybrid car batteries and high power lines (>3 Hz–3 kHz), radiofrequency (RF) and microwave frequencies including millimeter waves (3 kHz–300 GHz) from mobile phones, towers, base stations and wireless devices, and intermediate frequencies "Dirty Electricity" emitted from power lines. While such organizations as ICNIRP (the International Commission on Non-Ionizing Radiation Protection) still continue to claim that electromagnetic radiation can cause "only thermal effects", clinging to theory that does not match facts and upholding obsolete thermal safety standards, extensive scientific evidence has clearly demonstrated that non-thermal health effects produced by electromagnetic radiation do exist, are important to health, and should be taken into consideration when safety standards are set. This review aims to highlight some evidence of biologic effects in various body systems, and to suggest preventive measures to reduce such effects on health. Exposure to electromagnetic radiation at intensities lower than thermal safety standards has been associated with non-thermal biological effects including damage and changes to cells and DNA. This review presents evidence of such effects demonstrated in: the hematologic system, the nervous system, the immune system, the reproductive system, the skin and muscles, the cardiovascular system, glucose metabolism, and Electrohypersensitivity ("Microwave sickness"). Protective measures are then suggested to reduce these effects.

Determination of the velocity of short electromagnetic waves by interferometry

1952 ◽  
Vol 213 (1112) ◽  
pp. 123-141 ◽  
Keyword(s):  
Phase Velocity ◽  
Electromagnetic Radiation ◽  
Free Space ◽  
Electromagnetic Waves ◽  
Wave Beam ◽  
Wave Length ◽  
Wave Frequency ◽  
Space Wave

A new measurement of the velocity of electromagnetic radiation is described. The result has been obtained, using micro-waves at a frequency of 24005 Mc/s ( λ = 1∙25 cm), with a form of interferometer which enables the free-space wave-length to be evaluated. Since the micro-wave frequency can also be ascertained, phase velocity is calculated from the product of frequency and wave-length. The most important aspect of the experiment is the application to the measured wave-length of a correction which arises from diffraction of the micro-wave beam. This correction is new to interferometry and is discussed in detail. The result obtained for the velocity, reduced to vacuum conditions, is c 0 = 299792∙6 ± 0∙7 km/s.

Hippocampal Oxidative Stress Induced by Radiofrequency Electromagnetic Radiation and the Neuroprotective Effects of Aerobic Exercise in Rats: A Randomized Control Trial

2021 ◽  
pp. 1-7
Author(s):  
Mina Rasouli Mojez ◽  
Abbas Ali Gaeini ◽  
Siroos Choobineh ◽  
Mohsen Sheykhlouvand
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Aerobic Exercise ◽  
Electromagnetic Radiation ◽  
Antioxidant Capacity ◽  
Electromagnetic Waves ◽  
Control Group ◽  
And Control ◽  
Radiofrequency Electromagnetic Radiation

Background: The present study determined whether 4 weeks of moderate aerobic exercise improves antioxidant capacity on the brain of rats against oxidative stress caused by radiofrequency electromagnetic radiation emitted from cell phones. Methods: Responses of malondialdehyde, catalase, glutathione peroxidase, and superoxide dismutase, as well as the number of hippocampal dead cells, were examined. Male Wistar rats (10–12 wk old) were randomly assigned to 1 of 4 groups (N = 8): (1) moderate aerobic exercise (EXE) (2 × 15–30 min at 1215 m/min speed with 5 min of active recovery between sets), (2) exposure to 900/1800 MHz radiofrequency electromagnetic waves 3 hours per day (RAD), (3) EXE + RAD, and (4) exposure to an experimental phone without battery. Results: Following the exposure, the number of the hippocampal dead cells was significantly higher in group RAD compared with groups EXE, EXE + RAD, and control group. Malondialdehyde concentration in group RAD was significantly higher than that of groups EXE, EXE + RAD, and control group. Also, the activity of catalase, glutathione peroxidase, and superoxide dismutase in groups EXE, EXE + RAD, and control group was significantly higher compared with those of the exposure group. Conclusion: This study demonstrated that moderate aerobic exercise enhances hippocampal antioxidant capacity against oxidative challenge in the form of radiofrequency electromagnetic waves.

Effects of Electromagnetic Radiation of Mobile Phones on the Human Brain

2020 ◽  
pp. 97-120
Author(s):  
Junaid Ahmad Malik
Keyword(s):  
Human Brain ◽  
Electromagnetic Radiation ◽  
Mobile Phones ◽  
Human Life ◽  
Well Being ◽  
Car Accidents ◽  
Brain Barrier Permeability ◽  
Biological Impacts ◽  
Mind And Brain ◽  
The Mind

With the expanding use of wireless cellular networks, concerns have been communicated about the possible interaction of electromagnetic radiation with the human life, explicitly, the mind and brain. Mobile phones emanate radio frequency waves, a type of non-ionizing radiation, which can be absorbed by tissues nearest to where the telephone is kept. The effects on neuronal electrical activity, energy metabolism, genomic responses, neurotransmitter balance, blood–brain barrier permeability, mental psychological aptitude, sleep, and diverse cerebrum conditions including brain tumors are assessed. Health dangers may likewise develop from use of cellular communication, for instance, car accidents while utilizing the device while driving. These indirect well-being impacts surpass the immediate common troubles and should be looked into in more detail later on. In this chapter, we outline the possible biological impacts of EMF introduction on human brain.

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