Iranian Journal of health, safety andenvironment

555-564

Authors: Usen P. Udoh

The study assessed the conditions of rural housing and the extent to which housing conditions related to household socio-economic characteristics of an oil-rich Nigerian State of Akwa Ibom. The study design was based on household cross-sectional survey. Direct observation and questionnaire administration were employed to collect both socio-economic and housing data from 540 randomly sampled households spread across 90 rural communities. Housing condition was evaluated using five broad indicators: safety/security, indoor temperature/ventilation, building condition, hygiene/sanitation and environmental quality, while socio-economic characteristics were examined using income, educational attainment, occupation, household size and crowding. Alongside descriptive statistics, the multiple correlation technique was used to analyze the relationship between housing conditions and socio-economic variables. Results showed an overwhelmingly poor condition of housing among the rural households. Majority of households were found deficient in facilities necessary to encourage safety, security, comfort, hygiene, sanitation, and environmental quality. The study also found households’ socio-economic characteristics to be highly correlated with housing conditions and therefore provides the basis for massive rural empowerment and development drive as a means to counter rural housing decay.

565-572

Authors: Hadi Baseri, Hamid Reza Nassehinia, Gholamreza Ghainy

The insulation is one of the emphasized methods in recent years to reduce energy consumption in buildings. As an insulator, thatch has the advantages such as the accessibility of the site, the least energy consumption in its construction (low cost), recyclability and compatible with the nature and the environment. The aim of this study is determining of the heat transfer coefficient and thatch mechanical properties So that due to its advantages it used as insulation and thereby reducing energy consumption in buildings considered and used. In this study, the heat transfer process in a cylindrical turn of thatch was studied. In the conducted experiments the temperature changes inside a cylinder turn were determined for different values of the ratio of the Straw to the used soil and then the obtained results were simulated using the version 2.4 of the COMSOL software. The compressive strength and mechanical properties of thatch were tested. By increasing the consumed Straw weight of 50 to 90 kg per 1 cubic meter of soil, the heat conductivity coefficient from about 1.1 decreased to about 0.3 (W/m K), the contraction percentage decreased and the porous, the compressive strength and the thatch deformability increased in the failure. Thermal insulation and the mechanical properties of the thatch were improved by the mixing of appropriate ratio of straw to soil in the construction of thatch. It can be used in the plaster of the walls and the internal and external ceilings of the building.

578-581

Authors: Ehsanollah Habibi , Zahra Mohammadi, Ayoub Ghanbary Sartang, Mohammad Zeinodini

Biorhythm is one of the newest subjects in the field of cognition of mental ergonomics which can be very effective in reduction of work-related accidents or mistakes with no apparent reason. With evaluating Biorhythm individuals can intervention action to reduce job accidents carried out. Thus, the aim of this study was to determine the relationship Biorhythm and work-related accidents in the metal industry. This research is a cross-sectional and analytical-descriptive in the metal industrial Isfahan city of 120 work-related accidents during 2015. The required information was collected from available documents in HSE unit of the company biorhythm charts were drawn based on a date of accidents and participants birthdays, using natural Biorhythm Software V3.02 Conduct. Finally، the data were analyzed using spss version 20 and descriptive statistics.This study showed that the frequency of accidents in critical days and negative section of physical cycle was more than expected. Also the frequency of accidents in critical days and negative section of emotional and intellectual cycles was less than expected. Most type of injury, including cuts to 35.8 percent and the lowest type of injury was torsion with 5 percent. Most limb injury, hands and fingers with 51.7 percent and the lowest limb injury were back at 2.5 percent. Accidents outbreak in physical cycles was 38.3 percent. These 120 accidents in additionally were causing 120 loss of working days in effect accident. Most percent of loss of working days were for 20 to 30 days with of 39.2 percent. Most percent of loss of working days were for 20 to 30 days with of 39.2 percent. Due to the physical nature of the work activities in the metal industry can be stated that the study showed that in physical work activities, frequency of accidents in critical days and negative section of physical cycle in which the person is not physically ready to do the job was more than expected. Therefore, by training and increasing the knowledge of workers regarding biological cycle and its effects on mental, emotional and physical status, each person effects can make some changes to their work plans during days that they do not feel well, physically or mentally, in order to prevent the likely accidents.