Yazar "Celik, M. S." seçeneğine göre listele

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    Bioelectrical parameters of people exposed to radiofrequency in workplace and houses provided to workers
    (Diagnosis Press Ltd, 2008) Dasdag, S.; Akdag, M. Z.; Celik, M. S.
    The effects of radiofrequency (RF) and microwave radiation in workplace have been a subject of continuing of the major exposed groups is workers and their families who have been working and living in houses provided to employees of these stations. Therefore, the present study intended to investigate the effect of RF emitted from antenno of 1062 kHz medium wave radio-broadcating station on bioelectrical parameters of workers and their families living in houses provided to employees of these stations. of these stations. The studv was carried out on 20 men working in radio-broadcasting station, 11 women and 30 voluntary children (Boy: 15. Girl: 13) living in houses provided to workers of the station. Five bioelectrical parameters such os resistance, reactance, phase angle, body capacitance and basal metabolic rate (BMR) were measured. E.field and power density inside houses was between 0.48 V/m 7 - 2.86 V/m and 0.0001 mW/cm(2) - 0.0023 mW/cm(2) respectively. However the average E.field and power density in the plaving area of the children was 12.75 V/m and 0.0436 mW/cm(2) E.field crud power density in the control room desk and around the workplace was 4.04 V/m, 0.0042 mW/cm(2) and 31.88 V/m. 0.348 mW/cm(2) respectively. The results of this study showed that the parameters such as phase angle (degrees), body capacitance (pF) and reactance (Omega) of girl group were decreased according to control group (p<0.01). In conclusion, some bioelectrical parameters of the children who have been living in houses provided to employees of radio broadcasting stations can he affected by radio-frequencies.
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    Öğe
    The effects of extremly low frequency magnetic field and mangan to the oral tissues
    (Diagnosis Press Ltd, 2008) Kaya, S.; Celik, M. S.; Akdag, M. Z.; Adiguzel, O.; Yavuz, I.; Turnen, E. C.; Ulku, S. Z.
    Exposure to extremely low frequency magnetic field (ELFMF) originating from daily electrical-electronic appliances and electric lines, is a common thing. Recently, the discussions focused on the topic whether ELFMF had any harmful effects over health or not. Several previous studies displayed that ELFMF significantly increased bone mineral density. The aim of the present study was to investigate the influence of ELFMF and manganese over mineral accumulation in head and jaw bones of rats. Previous studies showed that manganese plays a significant role over normal development of enamel and dentin alongside contributing to the calcium and phosphorous association. In the present study, the effects of exposure to ELFMF and manganese on mineral density and histology of teeth, were investigated. In the present study, 64 male Wistar albino rats were divided into 8 groups. Amount of mineral elevations were determined in head and jaw bones of the first 6 groups (p <.05) and histologic alterations were found in teeth of rats. The obtained results indicated that ELFMF plays an important role over mineral density and histologic structure of cranial and jaw bones in rats. In conclusion, further epidemiological and experimental laboratory studies are required for more detailed evaluation of the effects of ELFMF on cranial and jaw bones of rats.
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    Öğe
    EXAMINATION OF LONG TERM MAGNETIC FIELDS ON RAT CALVARIAL AND MANDIBULAR BONE MASS
    (Diagnosis Press Ltd, 2010) Akpolat, V.; Celik, M. S.; Celik, M. Y.; Ozerdem, M. S.; Akdag, M. Z.; Dasdag, S.; Yavas, M. C.
    By means of long term extremely low frequency magnetic field (ELF), this study examined the effect of long term magnethic field on rat calvarian and mandibular bone mass. Fourty five female Spraque-Dawley rats were selected for the study. The rats were divided into 3 groups (n=15); ELF MF with 50Hz, 1.5mT was applied for 6 months, 4 hours/day. Total cranial and mandibular bone mineral density (BMD) and bone mineral content (BMC) of rats were determined by dual-energy X-ray absorptiometry (DXA; Discovery QDR series, Discovery A, Hologic, Inc.). Measurements were recorded for all groups before and after the applications, all data were collected and analyzed statistically. The variations in Group 1, before and after the ELF MF applications with respect to BMC and BMD were considered significant (p<.01, p<.001). The variations in Group 2, that has bone loss with respect to BMC and BMD were considered not significant (p>0.05). The variations in control group, Group 3, with respect to BMC and BMD were considered significant (p<0.05).