مهراسبی, محمد رضا
دانشگاه علوم پزشکی زنجان
[ 1 ] - ارزیابی عملکرد آشکارساز یون سازی نوری در سنجش تولوئن هوا
Background and aims: In the field of chemical agents at workplaces, traditional measurement method for assessing the volatile organic compounds (VOCs) concentration is using a gas chromatograph generally equipped with a flame ionization detector (GC-FID). However, there are some limitations in working with this equipment including equipment accessibility, necessity of highly trained operators...
[ 2 ] - Photocatalytic Degradation of Methyl Tert-Butyl Ether (MTBE) from Aqueous Solution: A Review
Nowadays, underground water is the main source of drinking water that contamination to organic pollutants such as MTBE is an important issue. One of the suitable methods for these types of pollutants is the advanced oxidation methods. Advanced oxidation processes (AOPs) are involved in the production of highly reactive hydroxyl radicals that oxidize organic matter such as MTBE and even le...
[ 3 ] - Adsorption of Humic Acid On Multi-Walled Carbon Nanotubes
Background: Natural organic matters (NOMs) have the main role in formation of trihalomethanes. These compounds are in natural water sources due to biological activities. In the presented study, adsorption and separation of humic acid as an index of natural organic matters using multi-walled carbon nanotubes is evaluated. Methods: The experiments were carried out in bath adsorption reactors wit...
[ 4 ] - Investigation of Enzyme Immobilization Effects on its Characteristics
Background; Enzymes are well known as sensitive catalysts in the laboratory and industrial scale. To improve their properties and for using their significant potential in various reactions as a useful catalyst the stability of enzymes can often require improvement. Enzymes Immobilization on solid supports such as epoxy- functionalized ferric silica nanocomposite can be effective way to improve ...
[ 5 ] - The Effect of Paved Roads on Organic Carbon Content of Soil in Taham Dam Basin
Background; Contamination of water and soil through non-point sources such as road runoff causes environmental concern. The aim of this study is to determine the effect of Zanjan – Chavarzagh road on the total organic carbon (TOC) content of sediments in tributaries and the river that lead to Taham Lake. Methods; In tributaries and the river 69 soil and sediment samples were taken and the Tota...
[ 6 ] - Application of Live, Dead and Dried Biomasses of Aspergillus Versicolor for Cadmium Biotreatment
Background: Various industries produce and discharge wastes containing different heavy metals into the environment. Apart from using living biomass, dead and dried biomasses have been introduced as a new field of biotreatment technology. Method: The cadmium (Cd) (II) removal characteristics of live (growing), dead (autoclaved), and oven-dried biomasses of Aspergillus versicolor were examined a...
[ 7 ] - The Effect of Washing and Peeling on Reduction of Dithiocarbamates Residues in Cucumber and Tomato
Background: Dithiocarbamates, the main group of fungicides, are used to control about 400 pathogens in more than 70 crops. These pesticides are widely applied to crops including potato, cereal, apple, pear and leafy vegetables throughout the world since 1960. From the late 1980s, using these fungicides has caused much debate among regulators about their long-term effects on consumers and occupa...
[ 8 ] - Water Quality Modeling and Evaluation of Nutrient Control Strategies Using QUAL2K in the Small Rivers
Background: Qual2k is a stream water quality model and was used to evaluate the water quality of the Kine-Vars River and assess the response of the river to nutrient management strategies. Methods: For that purpose, 7 sample stations were selected and surface water samples were collected in the winter and summer of 2012 and were analyzed for temperature, dissolved oxygen, biological oxygen dem...
[ 9 ] - Indoor Airborne Bio Aerosols in Valiasr Hospital in Zanjan, Iran
Background: Bio aerosols include airborne micro-organisms such as bacteria, fungi, viruses, etc and their products. Exposure to a bio aerosol is linked with a broad spectrum of health problems, including infectious diseases, acute toxic effects, allergies, and cancer. The aim of this study was to evaluate the quality and quantity of bio aerosols found in the air of different wards in Valiasr Ho...
[ 10 ] - Evaluation of Relationship between Awareness of Islamic Citizenship Rights and Organizational Similar-to-me of Education Managers of Zanjan University of Medical Sciences
Background & Objectives: This research aimed to determine the relationship between awareness of Islamic citizenship rights and organizational similar-to-me of education managers of Zanjan University of Medical Sciences, Zanjan, Iran. Materials and Methods: This descriptive and correlational research was performed on all education department managers and faculty members with a history of educat...
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