محمدیان , محمود
[ 1 ] - بررسی تراکم PM2.5 در هوای داخل و خارج فروشگاه ها در مرکز شهر ساری
Background and purpose: Ëxposure to respirable particles (PM2.5) causes adverse health effects, such as: respiratory and cardiovascular diseases and eventually death. Çonsidering congested traffic flow in the city center of Sari, it could be expected that exposure of citizens to particulate air pollution would be high. The aim of this study was to survey the concentrations of PM2.5 indoor and o...
[ 2 ] - طراحی اتاقک خنک و تاثیر آن بر شاخص تنش گرمایی در موضع کاری کارگران کوره در کارخانه شیمی معدنی همدان
Background and purpose: Heat is a common type of energy that is produced during industrial processes in many work places. Workers who are working in hot areas may be exposed to heat stress. The aim of this study is to evaluate the effect of a designed cool spot on reduction of Mean Radiation Temperature (MRT) and Wet Bulb Glob Temperature index (WBGT) on a group of furnace workers. Materia...
[ 3 ] - بررسی آلودگی صوتی شهر ساری طی یک سال (87-86)
Background and purpose: Noise is one of the most harmful factors in the environment. It is also one of the harsh phenomenons in this century that people are exposed to. Exposure to noise higher than threshold limit value could cause some physical and mental disorders. High traffic flow due to recent increase in number of vehicles causes higher noise pollution. There are few studies regarding ...
[ 4 ] - Sick Building Syndrome and Its Associating Factors at a Hospital in Kashan, Iran
Background and purpose: Sick building syndrome (SBS) consists of a group symptoms, including fatigue, headache, nausea, nose irritation, dry skin and redness in which people in a building suffer from the symptoms. The purpose of this study was to assess the symptoms of SBS and its associated factors among staff at a hospital in Kashan, Iran. Materials and Methods: The present study was condu...
[ 5 ] - Survey of (PM2.5) Concentrations in Sari\'s City Center in 2010
Background and purpose: Because of the high traffic flow in the city center in Sari, a walk through survey indicated that the PM2.5 concentrations are likely to be higher than the standards. This study was carried out to determine the level of PM2.5 at the streets' curbsides in the city center in Sari. Materials and Methods: In this cross-sectional study the PM2.5 concentrations were measure...
[ 7 ] - Evaluation of cooking emitted particulate matter concentration and workers cancer risk assessment in the sari fast-food shops
Introduction: One of the harmful pollutants in the indoor environments is particulate matters. Particles smaller than 2.5 micrometer in diameter that are suspend in the industrial environments air are the most deleterious dusts which can cause lung disease and cancer. In present study PM2.5 concentration in the fast-food shops air and its cancer risk for shop workers were assessed. Material ...
[ 8 ] - بررسی مواجهة کارگران با سیلیس موجود در ذرات قابل‌استنشاق در یک کارخانة سیمان در استان خراسان رضوی
زمینه و هدف: مواجهه کارگران با ذرات هوابرد سیمان که حاوی ذرات سیلیس آزاد کریستالی است می تواند منجر به بیماریهای جدی از جمله سیلیکوزیس شود. این مطالعه با هدف ارزیابی غلظت سیلیس موجود در گردوغبار قابل‌استنشاق در منطقة تنفسی کارگران شاغل در یک کارخانة سیمان در استان خراسان رضوی انجام شد.مواد و روش‌ها: در این مطالعه غلظت سیلیس موجود در ذرات قابل‌استنشاق سیمان هوای منطقه تنفسی 42 نفر از کارگران بخش...
[ 9 ] - Survy of Influence of inlet Type and Position on the Performance of Jet Pulse bag house System
Background and Objective:Pulse jet systems are of interest due to their high filtration velocity,They're used as inlets from top and bottom. the purpose of this study was to compare the pressure drop and collection efficiency at the different inlet positions in a baghouse Methods and Materials:In this experimental study, a pilot system was designed at 12ft/min permeability for MDF particles.Fo...
[ 10 ] - Investigation of Formaldehyde Concentration in the Air of an Anatomy Hall and Its Relationship with Environmental Factors
Introduction and purpose: Formaldehyde is used as a disinfectant and preservative for preserving the mummy’s body. The compound is classified by the International Agency for Research on Cancer in the Human Cancer Group. This study aimed to investigate the rate of exposure to formaldehyde vapors in an anatomy hall and its relationship with environmental factors. Methods: This descriptive study ...
[ 11 ] - Concentration Evaluation and Health Risk Assessment of Welders' Exposure to Total Fumes and Manganese during Welding at Metal Industry
Introduction and purpose: Risk assessment of toxic or hazardous chemicals enables industrial hygienists to make appropriate decisions regarding management provisions in a healthy workplace. Exposure to total fumes and manganese during welding can have harmful effects on welders’ health. Therefore, the present study was conducted in the metal industry to evaluate the concentration and determine ...
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