مطالعه مواجهه عمومی با امواج مایکروویو انتشار‌یافته از سامانه‌های بدون‌ سیم (Wireless) دانشگاه علوم پزشکی قزوین

نویسندگان

دانشگاه علوم پزشکی قزوین

10.22052/5.1.43

چکیده

افزایش استفاده از سامانه­های بدون سیم در محیط­های آموزشی و اداری، باعث نگرانی افراد شاغل در این محیط­ها در خصوص عوارض جسمی و روانی این امواج بر سلامت­ شده است. لذا مطالعه حاضر با هدف ارزیابی مواجهه عمومی با شدت امواج مایکروویو انتشار یافته از سامانه­های بدون سیم (Wireless) دانشگاه علوم پزشکی قزوین انجام شد. در این پژوهش توصیفی- تحلیلی شدت مؤثر امواج مایکروویو در 158 ایستگاه شامل محل نقاط دسترسی آنتن­ها، اتاق اساتید، اتاق جلسات، کلاس درس، راه­روها و مجاور رایانه (لپ­تاپ) در دانشکده­های دانشگاه علوم پزشکی قزوین اندازه­گیری گردید. اندازه­گیری امواج با استفاده از دستگاه  Wave Controlساخت کشور اسپانیا مطابق با روش توصیه شده    IEEE C95.3 مؤسسه ملی استاندارد آمریکا صورت گرفت. چگالی توان مواجهه با امواج مایکروویو در سطح دانشگاه μW/cm2 437/0 ±121/0 بود که پایین­تر از حدود مجاز بین­المللی می­باشد. نتایج نیز نشان داد میزان چگالی توان امواج مایکروویو بر حسب نقاط اندازه­گیری و دانشکده­ها اختلاف معناداری وجود دارد (p < sub>v<0.05). بیش­ترین میانگین چگالی توان امواج معادل μW/cm2 558/0 در اطراف آنتن به­دست آمد. در پژوهش انجام شده با این­که چگالی توان امواج انتشار یافته از سامانه­های بدون سیم در یک محیط آموزشی و اداری کمتر از حدود مجاز توصیه شده کشوری قرار داشت. با این حال، به­علت عدم شواهد قطعی در مورد اثرات بهداشتی مواجهه انسان با امواج، رعایت اصول هرچه کمتر مواجهه برای کاربرد منابع پرتو رادیویی توصیه شده است.
 

کلیدواژه‌ها

عنوان مقاله [English]

The study of public exposure to microwave emissions of the wireless systems (Wireless) Qazvin University of Medical Sciences

نویسندگان [English]

  • mojtaba jafarvand
  • Ali Safari Variani
  • Mohammad Rahmani
چکیده [English]

The increasing use of wireless systems in educational and administrative environments has caused concern People working in these environments about the physical and psychological effects of the waves on health. This study was conducted to assess public exposure to microwave emissions intensity of the wireless system (Wireless) Qazvin University of Medical Sciences.
 In this cross-sectional study, were measured the intensity of microwave radiation on 158 stations including the location of access points antennas, teachers room, meeting rooms, lecture classrooms, halls and nearby laptops in schools of Qazvin University of Medical Sciences. Wave intensity was measured using a wave control system (made in Spain) in accordance with standard procedures recommended by the National Institute of America IEEE C95.3. The effective intensity of exposure to microwave radiation emitted in the studied university was equaled to 0.121±0.437 μW/cm2 which was lower than the international exposure limits. Results also showed that there was a significant difference between the intensity of microwave with   measurement points and Schools (pv <0.05). The greatest intensity obtained 0.558 μW/cm2 around the antenna. In the present study, although intensity spread of wireless systems in a learning environment and administration were less than the recommended limit in the country. However, because there is no conclusive evidence about the health effects of human exposure to radiation, it was recommended to consider "As Low As Reasonably Achievable" principle for exposure to RF radiation.
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کلیدواژه‌ها [English]

  • Wireless systems
  • Public exposure
  • Microwave radiation

مراجع

[1] I. Markakis, S. Theodoros. Radiofrequency exposure in Greek indoor environments.Health physics. 104(3) (2013) 293–301. [2] A. Peyman, M. Khalid, C. Calderon, D. Addison, T. Mee, M. Maslanyj, S. Mann. Assessment of exposure to electromagnetic fields from wireless computer networks (wi-fi) in schools; results of laboratory measurements. Health physics. 100(6) (2011) 594–612. [3] N. Kurd, A. Garkaz, M. Aliabadi, M. Farhadian. Study of public exposure to microwave radiation from wireless (WiFi) systems in Hamadan University of medical sciences. Journal of Ergonomics. 1(3)(2014) 11–17. [4] S. MICLĂUŞ, P. Bechet, I. Bouleanu, R. Helbet. Radiofrequency field distribution assessment in indoor areas covered by wireless local area networks. Advances in Electrical and Computer Engineering. 9(1) (2009) 52–55. [5] R. Hruby, G. Neubauer, N. Kuster, M. Frauscher. Study on potential effects of “902-MHz GSM-type Wireless Communication Signals” on DMBA-induced mammarytumours in Sprague–Dawley rats.Mutation Research /Genetic Toxicology and Environmental Mutagenesis. 649(1) (2008) 34–44. [6] A. Bazargani, M. Yunesian, M. Monazzam, A. Mahvi. Microwave emission in indoor sites in the vicinity of macro cellular base stations in Zanjan. Iranian Journal of Health and Environment. 7(3) (2014) 339–350. [7] A. LoueiMonfared, S. HamounNavard. Effect of mobile phone electromagnetic radiation histomorphological and morphometrical changes of the lymphoid organs in the mice. Urmia medical journal. 26(2) (2015) 92–101. [8] P. Alaei. Introduction to Health Physics. Medical Physics. 35(12) (2008) 5959–5959. [9] N. Mahrour, R. Pologea-Moraru, M. Moisescu, S. Orlowski, P. Levêque, L. Mir. In vitro increase of the fluid-phase endocytosis induced by pulsed radiofrequency electromagnetic fields: importance of the electric field component. Biochimicaet Biophysica Acta (BBA)-Biomembranes. 1668(1) (2005) 126–137. [10] R. Baan, Y. Grosse, B. Lauby-Secretan, F. El Ghissassi, V. Bouvard, L. Benbrahim-Tallaa, N. Guha, F. Islami, L. Galichet, K. Straif. Carcinogenicity of radiofrequency electromagnetic fields. The lancet oncology. 12(7) (2011) 624–626. [11] D. Cavka, D. Peratta Andrés. Electrostatic field around human head in front of Video display unit: Field as a Poljak,function of display-Face distance. USA. In Applied Electromagnetics and Communications. (2007). [12] M. Standstrom, K. Hansson Mild, B. Stenberg, S. Wall. A survey of electric and magnetic fields among VDT operators in offices. IEEE transactions on electromagnetic compatibility. 35(3) (1993) 394–397. [13] L. Hillert, T. Åkerstedt, A. Lowden, C. Wiholm, N. Kuster, S. Ebert, C. Boutry, S. Douglas Moffat, M. Berg, B. Birger Arnetz. The effects of 884 MHz GSM wireless communication signals on headache and other symptoms: an experimental provocation study. Bioelectromagnetics. 29(3) (2008) 185–196. [14] P. Bernardi, M. Cavagnaro, S. Pisa. Assessment of the potential risk for humans exposed to millimeter-wave wireless LANs: The power absorbed in the eye. Wireless Networks. 3(6) (1997) 511–517. [15] P. Avenue. IEEE Recommended Practice for Measurements and Computations of Radio Frequency Electromagnetic Fields With Respect to Human Exposure toSuch Fields 100 kHz–300 GHz. NewYork. American national standard institute. (2008). [16] F. Kenneth. Radiofrequency exposure from wireless LANs utilizing Wi-Fi technology. Health physics. 92(3) (2007) 280–289. [17] J. Andersen, P.E. Mogensen, G. Pedersen. Power variations of wireless communication systems. Bioelectromagnetics. 31(4) (2010) 302–310. [18] L. Verloock, W. Joseph, G. Vermeeren, L. Martens. Procedure for assessment of general public exposure from WLAN in offices and in wireless sensor network testbed. Health Physics. 98(4) (2010) 628–638. [19] M. Islam, O. Khalifa, A. Liakot, A. Azli, M. Zulkarnain. Radiation measurement from mobile base stations at a university campus in Malaysia. American Journal of Applied Sciences. 3(4) (2006) 1781–1784. [20] M. Aliabadi, H. Hatami, M. Ardestani, M. Farhadian. Evaluation of General Exposure to Microwave Propagation in Users of Different Types of Cell Phones. Occupational Medicine Quarterly Journal. 7(2) (2015) 21–31. [21] A. Cookson. Recommended Practice for Radio Frequency Safety Programs. NewYork. American National Standard Institute. (2006). [22] F. Barnes, B. Greenebaum. Biological and medical aspects of electromagnetic fields. American. CRC press. (2006).

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