نتایج جستجو برای: exposure limit
تعداد نتایج: 491019 فیلتر نتایج به سال:
Introduction: Styrene (C₆H₅CH=CH₂) is known as one of the volatile organic substances produced or used in petrochemical industries. Exposure to this chemical compound can thus lead to respiratory diseases. Therefore, this study aimed to evaluate occupational exposure to styrene vapor and to determine the risks of its health consequences in petrochemical industry workers through a quantitative m...
When developing future wireless access networks, it is important to focus not only on optimizing the power consumption, but also the electromagnetic field exposure for human beings. However, optimizing towards these two parameters results in conflicting requirements on the network. In this paper, a deployment tool for future green wireless access networks is proposed, allowing four different le...
We provide direct evidence that people with strong family ties have a lower level of trust in strangers than people with weak family ties, and argue that this association is causal. We also investigate the mechanisms that underlie this effect, and provide evidence that these revolve around the level of outward exposure: factors that limit exposure limit subjects’ experience as well as motivatio...
Background and aims: Formaldehyde (FA) is a colorless toxic gas used as a disinfectant and preservative and known as a carcinogen and strong irritant. Due to its germicidal, preservative and fixative properties, formaldehyde or other chemicals that potentially produce formaldehyde, are used in some cosmetics. OSHA has warned about hair dresser’s exposure to FA higher than thre...
Background and Objectives: Aflatoxin is one of the most important and common toxins in high consumption foods such as rice, which can threaten health of the consumers. In this study, risk of total aflatoxin based on its exposure levels and adverse effects was assessed in Iranian rice. Materials & Methods: This study was carried out on total aflatoxin in 60 national rice samples collected base...
Background: Aflatoxins (AFs), as secondary metabolites, are mainly produced by fungi of Aspergillus genus. The determination of contamination rate, dietary exposure, and health risk assessment for aflatoxin M1 (AFM1) was conducted aimed to estimate potential health risks for the population of North Macedonia. Methods: A total of 974 dairy samples, including 404 Ultra-High Temperature (UHT) mil...
Objective: To define threshold limit values and legally binding occupational exposure limits. Data Sources: Review of suitable literature. Study Selection: Studies based on detailed descriptions and/or measurements of airborne allergenic dust, total allergens, or even key allergens were selected. Results: Prevalences of IgE-mediated sensitization and occupational asthma are related to the aeroa...
Background and Objective: With the increase of cardiovascular diseases worldwide, diagnostic and therapeutic measures, particularly nuclear medicine technology, have also increased. A multiplicity of diagnostic procedures are used for treating many patients with cardiovascular diseases in Farshchian Cardiovascular Hospital, Hamadan, Iran; therefore, the staff of this hospital, especially non-in...
در این پروژه ما قابلیت روش آنالیز مستقیم جیوه (dma) را برای به کار گیری در تعیین مقدار جیوه در واکسن ها را مورد بررسی قرار دادیم. این روش یک روش کاملا اختصاصی است و ترکیبات موجود در ماتریکس واکسن که مهمترین آنها آلومینیوم می باشد در این واکنش تداخلی در جهت افزایش کاذب و یاکاهش کاذب مقدار جیوه ایجاد نمی کنند. به دلیل این اختصاصی بودن (specificity) نتایج حاصل از آن کاملا قابل اعتماد و صحیح (accur...
a novel silver (ag) nanocomposite electrode was proposed that fabricated from metal nanostructures and ionic liquids. the combined application of unique properties of nanomaterials and ionic liquids in the design of this ag nanocomposite results in electrodes with interesting advantages compared to the conventional metal disk electrode. in the first part of this thesis, the elecrocatalytic eff...
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