مجله تحقیقات نظام سلامت
سال نهم شماره 8 (آبان 1392)

Prayer is the most principle worship andthe most important divine prophet’s advice especially by holy messengerMuhammad. Prayer has been established by the divine religions and has been as an importablecomponent in all ofthem. Prayer meets the especial altitude in Islam. The effects and blesses ofthis holy value has been cited with fine and summary expression in the Quran. Refection in these unique expressions leads to indescribable rapture inthose who wish to follow the path to felicity. The philosophy، benefits،effects، requirements، and rites of prayer have been explained in many sayingof Imams and Quran Ayat. The realization of social health isinevitable necessity in human communities. Although mankind has attempted toobtain comfort، safety، living، and social health through macro and microinvestment over the centuries، the social facts and current census show that mankind hasnot achieved significant progress in this matter. Indeed، the social health hasremained as one of the most essential human concerns. However، as this matterhas been important، sociologists and experts of social science have paidattention to the study of social health and its dimensions، predictors، andpromoters. Althoughit has been paid attention to mental and social health of prayer، social healthhas been neglected yet. This topic require to further studies and evidences. The authors have been attempted to investigate the social health construct ofprayer based on Quran Ayat and saying of Imams.

Safety climate is a description of employees'' safety sharedconcepts about safety management. Assessment of safety climate is one of therequirements for promoting safe behaviors in the workplace. Nordic SafetyClimate Questionnaire (NOSACQ-50) is a valid tool for measuring safety climatethat its reliability and validity has been investigated in different languages. The aimof this study was to investigate the reliability and validity of the Persianversion of NOSACQ-50.

In thefirst stage، linguistic validation was done by forward and backwardtranslation. In the next stage، Psychometric validation of the Persian versionof the questionnaire was investigated among 200 employees of a tile and ceramicindustry. Kuder Richardson-20was used for reliability assessment and datawere analyzed by SPSS 19.

Assessment of questionnaire internal consistency showed thatminimum and maximum value of Kuder Richardson were for workers’ safety priorityand risk non-acceptance (0. 648) and management safety empowerment (0. 926) dimensions’ respectively. The quantity of Kuder Richardson for all dimensionsof questionnaire was 0. 942.

Linguistic validity and reliability of Persian version ofNOSACQ-50 was acceptable for measuring safety climate.

Leachatecontaining high levels of organic pollution with ammonia، halogenatedhydrocarbons، heavy metals and inorganic salts. Among the various methods fortreating leachate، has been developed membrane processes so that a morebiological process of membrane processes is used for separation of solid -liquid. The aimof this study was to evaluate the efficiency of Membrane bioreactor efficiencyin treatment of composting plant leachate.

This study is a cross-sectional study was carried outat a laboratory scale. In this study، SBR used with 5 litercombined with hollow fiber membrane reactor about 50% porosity and operational pressureMPa 0. 02. 150 samples were analyzed andaverage concentration of COD، ammonia، phosphorus and TSS was measured in inletleachate and bioreactor effluent. Finally removal efficiency was determined.

Bioreactor efficiency removal for COD، BOD5،TSS، ammonia and phosphorus، respectively were approximately 99. 2، 99، 89. 2،87and 98٪. The paired t test، showed astatistically significant difference between the input leachate and bioreactoreffluent (p-value <0. 05). based on one-sample t test، there aresignificantly different between values of the bioreactor effluent quality and standardsvalues (p-value <0. 05).

Raw leachate pretreatment processes such as microscreening، chemical precipitation، and ammonia stripping، anaerobic reactorswould be very effective in bioreactor performance.