Showing 3 results for Norozi
A Rahmani, R Norozi, M.t Samadi, A Afkhami,
Volume 1, Issue 2 (10 2009)
Abstract
Background and Objectives:Groundwater treatment by nano particles has received increasing interest in recent years. Chromium is a commonly identified contaminant in soils and groundwater. Zero-valent iron, as a natural reduction agent can be used in controlling of contaminated sites. The aim of this research is investigation of hexavalent chromium removal from aqueous solutions by using of iron nano particles the effective parameters. Materials and Methods: In this research the synthesized of the iron nano particles has performed by addition of NaBH4 to FeCl3·6H2O solution and Cr(VI) reduction efficiency in Batch system was studied. Also the impact of the important field parameters including pH, initial chromium concentration, nano zero valent iron concentration and retention time were investigated.
Results:The results of this research showed that synthesized particles were in nano scale. In pH=3, chromium inlet concentration of 10 mg L-1, nano zero valent iron concentration 0.5 g L-1 and 2 minute retention time, 100% of Cr(VI) was removed.
Conclusion:The concentration of nano zero valent iron had significant effect on the reduction of Cr(VI).The reaction occurred in a wide range of pH value and the reaction efficiency increased significantly with decreasing initial pH. The significant removal efficiency, high rate of process and short reaction time were showed that iron nano particles have significant potential in removal ofCr(VI) from contaminated water.
A Bondori, A Bagheri, M Sookhtanlou, O Jamshidi, A Norozi,
Volume 12, Issue 4 (2-2020)
Abstract
Background and Objective: Farmers in agricultural activities deal with various forms of chemical pesticides and thus their knowledge level can have a positive or negative impact on the food health of a community and the environment. Understanding their knowledge about the consequences of poisoning will provide an effective extension for promoting environmentally friendly methods in farms and maintaining food security. Hence, the aim of this study was to assess the farmers' knowledge of Moghan plain about the consequences of chemical pesticides use for community health, the environment and food security in 2017.
Materials and Methods: The method of this study is descriptive and survey. The statistical population consisted of all farmers (water cultivation) in the Moghan plain. The sample size of 400 was determined by multi-stage sampling method and using Kerjesi and Morgan table (1970). The study tool was a questionnaire whose validity was confirmed by a panel of experts and its reliability was confirmed by Cronbach's alpha coefficient.
Results: The findings showed that the majority of the farmers had relatively poor knowledge about the consequences of using chemical pesticides. The results of structural equation modeling (using Lisrel software) showed that the use of information resources, in total, predicted 24% of variance of farmers' knowledge about the consequences of chemical pesticides.
Conclusion: Given that more favorable safety behavior and cultivation of more healthy crops are based on the farmers' knowledge about the use and consequences of chemical pesticides, hence, the attention of authorities and planners for conducting various workshops in line with farmers' perceptions about the use of knowledge and the consequences chemical pesticides are needed.
Ensiyeh Norozi, Farideh Fathinejad, Fatemeh Salmani, Parisa Sadighara, Tayebeh Zeinali,
Volume 16, Issue 1 (6-2023)
Abstract
Background and Objective: The purpose of this study is to evaluate the difference in knowledge, attitude, and performance in terms of food hygiene and safety between people with and without a history of Covid-19.
Materials and Methods: This descriptive-analytical study was conducted on 712 people from August to September 2021 using a standard online questionnaire. The questionnaire had four sections, the first section includes demographic information, the second section includes seven questions related to participants' knowledge about food hygiene and safety, the third section includes ten questions about participants' attitudes, and the fourth section contains 10 questions related to participants' health performance. Multiple regression models were used to investigate the main predictors of knowledge, attitude, and performance. The significance level was considered as p < 0.05.
Results: There were 271 (43%) people with a history of infection and 361 (57%) without infection. Demographic factors were not significantly different between people with and without a history of infection. The results of the present study showed that knowledge (p=0.05) and people's performance (p=0.002) about food hygiene and safety have a significant relationship with the history of corona infection. However, people's attitude was not affected by the corona infection (p=0.17). Attitude was the major predictor of performance (p <0.001).
Conclusion: It can be claimed that contracting Corona has increased people's knowledge and improved performance regarding food hygiene and safety during the Covid-19 pandemic and has improved health conditions.
