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Foothills, plains, alluvial areas, and sloping areas whose soil is geologically susceptible to landslides, can become unstable and dangerous. In Iran, because of their soil type, Mazandaran, Gilan, Lorestan, Golestan and Khuzestan provinces are more vulnerable to landslides than other provinces. But taking into account factors such as earthquakes, extreme weather, and human interference, other parts of the country can also be prone to landslides. In case of rainfall and absorption of water by clay layers, the possibility of landslides increases. If the slope of the land is suitable, the slope will move on the clay layer and the thrust will occur downwards. In many mountains and steep areas, the conditions for slope failure may be available in terms of the slope angle, the type of soil and the presence of clay layers. But in the absence of sufficient soil moisture, this phenomenon is not observed. Landslides occur whenever rainfall happens and water penetrates the clay layer. Cutting down forest trees, destroying vegetation and pastures, along with possible rainfall and soil moisture, cam cause landslides on steep slopes. In fact, land use changes contribute to landslides. By examining the statistics over the last three decades in the northern provinces of Iran, it can be seen that landslides were far less likely when there was proper vegetation. The occurrence of heavy rains can cause failure in a large number of soil slopes. During these heavy rainfalls, the underground water level rises and increases the pore water pressure and reduces the stability of the soil. The purpose of this study is to investigate changes in pore water pressure and the factor of safety for slope stability. The flow of water inside the soil is numerically modeled as a two-dimensional, saturated-unsaturated, unsteady flow. The finite element method (FEM) is used to calculate the pore water pressure and the limit equilibrium method is used to determine the factor of safety for slope stability. To simulate the unsteady flow, time duration of 4 days is used with a time step of 0.1 days. The rainfall duration was assumed to be 24 hours. The intensities of different rainfalls are used as the input flux on the soil surface. The soil moisture curve, which shows the relationship between suction-moisture content and suction-hydraulic conductivity, is used. The results show that different rainfall intensities have different effects on soil moisture profile. As the intensity of precipitation increase, the factor of safety of slope stability decreases. This decrease is steeper for the first 24 hours of rainfall and over the three days after the rain stopped, its slope decreased. For example, for a rainfall intensity of 2.04 mm/hour and the duration of one day, resulted in a factor of safety of slope stability equal to 1.853, and at the end of the fourth day, it was 1.743. In other words, the factor of safety decreased by 5.9%.
 

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Aims: Fatalistic employees take serious risks because they have limited knowledge of risks and accidents, leading them to under estimate the possibility of their occurrence. This research examined the effectiveness of safety training on changing employees’ fatalism with attention to the mediating role of attitude toward safety issues. Methods: 204 employees was selected according to the stratified random sampling method in Isfahan Steel Company, divided randomly into control group (n=103) and experimental group (n=101) and the questionnaires of safety attitude and fatalism were applied as data collection instruments. The data was collected before intervention, and educational intervention was then executed in four 90-minute sessions over four days. One month after intervention, post-test was performed and the collected data was analyzed using descriptive indexes, t- and F-tests. Findings: Results show that there was a significant statistical difference in average numbers of attitude toward safety issues and fatalism before and after training intervention (p<0.01). Also, mediation analysis indicated attitude toward safety issues mediated the effect of safety trainings on fatalism (p>0.05). Therefore, safety training only by promoting workers’ safety attitudes can change the fatalistic beliefs among employees. Conclusion: By understanding relationship between fatalism and safety attitude, it should be possible to improve the training of employees, such that are less likely to attribute accidents to chance or fate.

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Today, with the overcome of vehicles transportation on the walking two important quality of urban spaces (safety and vitality) have faced challenges. Commercial walkways as a one of most important urban spaces can play an important role to urban spaces improvement in favor to pedestrians and create effective relationship among shopping, safety and vitality. The aim of this research is study about possibility of conversion of Sattarkhan street (between 1th and 2th square) to a walkway for create more safety and vitality of pedestrians. In this study, first we discussed literature about walkways and vitality and then we evaluate these two factors Sattarkhan Street by using of field studies and direct and indirect observations. After that with the comparative method and emphasis on experienced model in Tarbiat Street in Tabriz city, possibility of pedestrianized Sattarkhan Street and patterns and component of design is offered.

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The subject of this article is to study the factors and criteria of urban street desirability and citizens' expectations from them. The problem of research is the lack of accurate knowledge of the components of urban street utility in its various sequences. The theoretical proposition of the research is that the existence of quality in the physical, spatial, semantic-symbolic and activity-social components leads to vitality, memory, safety and flexibility as dimensions of citizens' expectations of the urban street. . The research method of the article includes descriptive-analytical and survey methods. Data collection method Interview is an open and semi-structured questionnaire. The statistical population of citizens is three sequences from Valiasr Street.
The results of the research show that vitality and memory play an important role in meeting the expectations of citizens from the city street. The two dimensions of flexibility and safety play a lesser role than these other two dimensions. The proximity of the importance of the four components leads to greater desirability. For the desirability of an urban street, the role of physical, spatial, semantic and activity components is very different according to the nature of the street sequence, but the effectiveness of all four components in creating desirability and creating a unique street character is very important. Physical and spatial components lead to greater vitality and safety, and semantic and activity components lead to greater memory and flexibility.

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Background: Cardiac Catheterization is a critical health status which requires standardized care policies, as well as it needs qualified and skilled health provider to obtain good outcome of management.This study aimed toassess the knowledge and practice of nurses regarding patient safety after cardiac catheterization.
Methods: This cross-sectional study was conducted in Punjab Institute of cardiology located in Lahore, Pakistan from 01^st December 2016 to 31^st March, 2017. 171 female nurses through using convenient sampling technique were included in the study. Questionnaire with multiple choice was used to collect data. Likert scale for multiple choose questionnaires regarding knowledge and practice of the nurses were used Collected data were analyzed using SPSS version 21.
Results: Out of 171 participants, all (N = 171) were female, most nurses had job experience of 2-5 years and 6-10 years, they were represented by 34.5% and 31.0% respectively. Mean of total knowledge was found good, when compared to mean of practice which was poor. This showed that nurses have good knowledge about post cardiac catheterization complication. It was found significant value of P < 0.0001 by applying correlation, that showed there was a good association between knowledge and practice (P < 0.05).
Conclusion: There was positive association between the knowledge and practice about patient’s safety after Cardiac Catheterization among Pakistanis registered nurses. Nurses those have proper knowledge and practice could help in rehabilitation of patients.

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Background: Masske is a traditional Iranian butter made from yoghurt. The first aim of this study was to isolate and identify the nonlactic pathogenic microflora by culture and molecular methods of identification, and the second purpose was to identify genetic similarity of the isolated bacteria in Masske.
Materials and Methods: In order to detect pathogenic dominant indicator microorganisms, a number of 150 bacterial isolates from three Masske samples, which may comprise the repetitive isolates and could grow on appropriate media for Staphylococci and E.coli, were classified into 8 groups according to their phenotypic characterization followed by chemical tests. Then 2approximately similar isolates from each group were chosen (total 18 isolates; we selected 3 isolates from 2 groups of eight), and the sequencing of 16S rRNA gene was done for subsequent analysis.
Results: Among 18 bacterial isolates, Staphylococcus hominis was the most frequently isolated species during the manufacture of Masske as the presence of this bacterium was confirmed in 14 out of 18 samples. Also, the presence of Staphylococcus epidermidis and Escherichia coli was identical across the samples (for each one, 2 out of 18).
Conclusion: Our results based on cultural and molecular methods suggest making some improvements to the hygiene of Masske manufacture due to the high population of minor pathogens.

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Safety is one of the main requirements of communities nowadays. Urban planners and designers have to distinguish unsafely factors in urban environment. The main aim is to increase the safety sense in urban space that is used by all people. Women consistently express greater fears for their personal safety in urban environments than do men. They need special requirement in urban environment in order to increase their perception of safety in urban public space such as parks. This study aims to survey women’s perception of safety of public spaces in Shiraz city (Iran). The data were gathered through a questionnaire. The study space selected for the research is Azadi Park, one of the main parks of Shiraz city. The results showed that there is a directed relationship between women’s sense of safety from land use, traffic and place neighborhood. The findings also showed that the rate of traffic, mix use of locations and places around the park and many space usages such as police office and station as welles religious places would increase the sense of safety. Personal factors (age, education, job and nation) had no relationship with the sense of safety.

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  A Production system with push control system uses materials requirements planning (MRP) to plan purchasing and manufacturing physical resources. Therefore a material planning system provides a basis for scheduling production and purchasing materials. Firms are looking for a way to deal with fluctuations causes by environmental uncertainty, which include fluctuations in demand and supply of raw materials. Using safety stock which is a certain amount of goods or materials kept as inventory to deal with uncertainty is one way to deal with fluctuation issue. Despite the safety stock importance, there is no comprehensive framework for decision making about this issue. The aim of this paper is to provide a dynamic model for MRP system. By applying this model, a suitable policy of safety stock is achieved. Then, the appropriate amount of safety stock can be obtained and total inventory cost can be reduced. A system dynamics approach is used to simulate the model and demand and lead time are considered probabilistic. After designing the model, different scenarios of safety stock have been proposed. Used criteria for selecting an appropriate scenario is total inventory cost, and finally a scenario in which the total inventory cost is at its lowest amount would be chosen as the best scenario.    
 
 

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Aim: The main purpose of this study was to investigate the safety and protective behavior of farmers in relation to the application of chemical pesticides in the fields and the factors influencing their behavior.
Methods: This quantitative and survey research was conducted in Mahidasht County, Kermanshah Province, in 2016. The population consisted of 170 farmers (N=200) Mahidasht County, who were determined by randomly method. Questionnaire used as a research tool. Validity and reliability of the tool were confirmed by a panel of experts and Cronbach's alpha coefficient. Correlation coefficient and statistical test was used for analyzing the data by SPSS20.
Findings: Most people have poor performance in the use of protective equipment when spraying pesticides. There was positive correlation between safety behavior of using pesticides, work experience, economic status, attitudes toward the correct application of pesticides, and participating in training.
Conclusion: Due to the farmers' inappropriate performance in safety and protection actions and significance relationship between participation in the training programs and safety behavior, it is necessary to design education programs to improve their knowledge.

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Aims: In Iran, safety and health education in agriculture such as the industrial sector has not been taken into account, and most farmers are not covered by professional health. The aim of this study was to assess the farmers’ awareness about occupational safety and health and factors affecting it.
Instruments & Methods: The population of the present descriptive correlational study included 140 households from farmers based on the simple random sampling method in 2014, in Mahidasht, Kermanshah Province, Iran. A researcher-made questionnaire was used as a research instrument and its validity was confirmed by the panel of experts and its reliability was confirmed by Cronbach's alpha coefficient. The data were analyzed by SPSS 23, using multiple stepwise regression and Pearson correlation test.
Findings: Most of the farmers had a negative attitude towards the observance of occupational health issues. The mean awareness had a significant correlation with social status (r=0.47; p=0.001), satisfaction of the agriculture as an occupation (r=0.51; p=0.0001), attitude (r=0.37; p=0.012) and, economic status (r=0.42; p=0.005). In the first step, the social status and satisfaction of the agriculture as an occupation predicted 66.9% of variance of awareness. In the second step, social status and satisfaction of the agriculture as an occupation as well as attitude predicted 53.3% of variance of awareness, and in the third step, by adding economic status to the previous variables; all variables predicted 51.2% of variance of awareness.
Conclusion: The level of farmers’ awareness about occupational safety and health is moderate. Social status, attitude, and economic status affect the farmers’ awareness about occupational safety and health.

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The importance of considering the environment in the oil industry and related industries is undeniable in order to develop sustainable industry. This study is a scientific-research which is conducted to analyze and develop innovative strategies by HSE approach and environmental planning, using a case study of the Pars Special Economic Zone (Assaluyeh). Key factors influencing the development of HSE program have been explained in the first step of this research and the next step has been identified strategic factors in every field. Each of these factors, the relative importance and strategic value of implementing matrix model evaluation according to internal and external factors, using the Delphi technique and were evaluated by a questionnaire. Thus, the strategic and internal-external organization factors have been ranked and the most important opportunities, threats, strengths and weakness points of the organization, with the aim of development of environmental protection based on HSE, have been introduced. Finally, evaluating the total function of strategic factors conclude that the strategic position of Pars Special Economic Zone (Assaluyeh), is able to overcome the opportunities to threats. Hence, it’s possible to apply “opportunities-threats, strategies” in order to recompense weak points of the organization.

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Background: The new unknown pandemic introduced in December 2019 in China is now known as SARS-CoV-2 induced COVID-19 (Coronavirus Disease 2019) disease. Some studies have been published by World Health Organization (WHO), Environmental Protection Agency (EPA), and Food and Drug Administration (FDA); however, there is a little information about food safety and COVID-19. The world has not sufficiently addressed the effects of COVID-19 on food safety. The remarkable point is the hypothesis that this epidemic has passed through a food source eaten by an individual and subsequently turned humans into an intermediate host. In particular, the recent state of information about SARS-CoV-2 is challenging owing to its high transmission and mortality rate in people as a potential source of pathogen and infections. However, there is currently no evidence about COVID-19 spread through food. Materials & Methods: Due to the fact that food is a basic humans need and could be an indirect carrier for the virus; therefore, hygiene protocols must be carefully implemented. Also, some studies have suggested that taking supplements, fermented dairy foods, probiotic products, as well as Vitamins C and D could be helpful. Heat treatment and pasteurization could prevent SARS-CoV-2 transmission through food.
Conclusion: It is recommended that further studies be performed on the duration of COVs survival at different levels of contact with foods under certain conditions with nanoparticles, nano-packaging, nano-emulsions, and nano-encapsulation to evaluate their size effect.

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Backgrounds: COVID-19 diagnostic testing and research substantially depend on high-quality COVID-19 specimens, for which biobanks are an important repository. This systematic review aimed to highlight the considerations for maintaining safety in biobanks during the COVID-19 pandemic.
Materials & Methods: A systematic review of literature was conducted using the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The literature search was conducted across Google Scholar, PubMed, and Directory of Open Access Journal because of their high indexation on many journals. Pre-defined search terms were used in the literature search. Overall, 7,184 articles were retrieved, and 2,054 duplicates among them were removed. After screening for eligibility using pre-defined criteria, 12 articles were included in the review.
Findings: Challenges faced by biobanks amid the COVID-19 pandemic include poor handling of COVID-19 specimens, poor sample collection, and sample contamination due to unclarified standard operating procedures. Strategies such as developing a framework for governing and monitoring the export of biological samples should be employed to overcome dangers eminent in the collection of biological samples. Total adherence to standard operating procedures should be ensured to maintain safety in COVID-19 samples collection, handling, and storage modalities. A deficit in material supply should be promptly addressed.
Conclusion: Compliance with issued guidelines should be ensured by the management and staff of COVID-19 biobanks.

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    The application of modern biotechnology in food production presents new opportunities and challenges for human health and development. Use of advanced genetic engineering techniques in food crops production, and transferring genetic material from one species to another has developed the genetically modified (GM) food. The development of GM organisms (GMOs) offers the potential for increased field-crop production, reduced agricultural chemical usage, and improved crop sustainability and food security, particularly in developing countries. On the other hand, application of genetic engineering techniques could be lead to improve nutritional value and enhanced production of functional foods. Increasing global biotech crop area from 2 millionth hectares in 1996 to more than 100 millionth hectares in 2006 indicates the continuous development in the first decade of their cultivation. It is expected that stellar growth in biotech crops, witnessed in the first decade of commercialization, 1996 to 2005, will continue and probably be surpassed in the second decade 2006-2015. Despite the potential benefits of genetic engineering of foods, the technology is surrounded by controversy. Many concerns and risks of GMO related to human health and environment are allergy, extension of antibiotic resistance genes, horizontal gene transfer, and effect on biodiversity. During the two last decades, several international committees have instituted guidelines and legislations for risk assessment of GM foods. One of them is the Cartagena Protocol on Biosafety which covers environmental safety of GMOs. According to the regulations, safety assessment relies on establishing that the food is substantially equivalent to its non-GM counterpart and specific testing for allergenicity of proteins and toxicity of metabolites and the whole food. Regarding to significance of biotechnology in permanent development, Islamic republic of Iran approved the Cartagena Protocol in 2001 and officially has been obligated to accomplish it from the beginning of 2004. Therefore, government established the national biosafety council, but the related regulation has not been approved yet. As a result, there is not any legal control on the genetically modified food imports at the moment in our country. So, it is necessary to pass the related regulation as soon as possible. Otherwise, the country will encounter heavy losses.

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This paper resulted from studies on 1:50000 scale topographical, 1:250000 scale geological and 1:250000 scale land use maps and meteorological and hydrometrics station data for road safety proposes considering environmental hazards parameters. We overlay table and map data layers considering spatial distribution, time and severity of hazards effect and then after field surveys, based on evidences and all of our data many maps of geological sensitivity, climatic, hydrologic and geomorphologic hazards produced. Finally by collating three above-mentioned maps, final map of environmental hazards of Sanandaj- Marivan road was produced. We conclude that about 65 percent of the road is passing over very high risk areas, 25 percent over high and 10 percent over mid risk areas.

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Psychological safety is a critical base for individual, organizational and national performance, since managers who feel psychologically unsafe, do not have essential motives for productivity and excellence. It is reality of organizations that there are stage of jealousy, spitefulness, enmity, power games of peoples and groups. In these situations, it is important to bring about psychological safety for people in organization. Psychological safety means to feel safety in mind, emotion and behavior from side of other peoples and present personal opinions and do the jobs, without any anxiety and fear in organization. Many studies emphasis on effects of individual psychological safety based on personal, organizational and national variables, but there is not a quantitative and experimental research on formation of psychological safety in managers, especially among Iranian governmental industries. This research has taken Glaser's approach in GT to theorize process of forming psychological safety in Iranian governmental industries. Results of this research show that organizational factors, superior's leadership style, relationships between peers and subordinates and their competencies, eco-social climate of society, organizational atmosphere and psychological capital of everyone affect individual psychological safety. It can enforces job engagement, job satisfaction in managers and reduces stress and anxiety and willingness to expatriation in them.
 

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Aims: Occupational safety, contact care, safety policy, as well as mental-environmental conditions, are supposed among the most significant factors shaping the levels of stress in nurses. Therefore, this path analysis was fulfilled to test a theoretical model to reflect on the relationship between Safety policy, occupational safety, mental-environmental conditions, and Contact Care.
Instrument & Methods: This predictive cross-sectional study was conducted in 2018-19. A total number of 530 nurses were selected from 11 hospitals in 4 provinces in Iran. The Stress of Exposure to Sharps Injury Scale was used. A path analysis was also utilized by SPSS 24 software.
Findings: The mean age of the nurses was 35.72±7.78. As well, 12.5% of the nurses had associate’s degrees and 82.2% of them were holding bachelor’s and higher degrees. The path analysis also explained 57.6% of the variance in contact care. Moreover, the findings indicated a direct effect as a significant positive relationship between occupational safety and mental-environmental conditions. Likewise, safety policy could mediate the relationship between occupational safety, mental-environmental conditions, and safety policy.
Conclusion: The study findings suggested that safety policy could mediate the relationship between occupational safety, mental-environmental conditions, and contact care. therefore, designing and implementing suitable safety policy statements can play a vital role in reducing the levels of stress among nurses in terms of patient care.