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Background: According to the role of microorganisms in nitrogen stabilizer in the fertility of the soil and growth and development of plants, the use of chemical fertilizers zinc sulfate (ZnSo4) as micronutrient index in agricultur. Due to the toxic effects of zinc metal, the aim of this research, isolation and identification of nitrogen stabilizer microorganisms of asparagus rhizosphere and the effect of toxic zinc metal on the growth of bacteria. Material and Methods: In order to isolate microorganisms in nitrogen stabilizer, soil samples from the asparagus rhizosphere preparation in vitro lacks a nitrogen with a temperature of 30 ° c for 48 hours, was cultured, phylogenetic identify it using 16s rRNA do accepted and the MIC strain isolated in different concentrations of zinc metal was determined. Results: Rhizosphere soil samples from the plant among the asparagus a strain of bacteria was isolated, check the phylogenetic it using 16s rRNA species of Acinetobacter calcoaceticus was detected and isolated in disallowed MIC concentration 52.32 ppm zinc metal was evaluated. Conclusion: One of the rhizosphere nitrogen stabilizer strains in the plant asparagus, bacterium Acinetobacter calcoaceticus, increase the intake of zinc metal was microorganisms cause damage and the maximum allowable amount of zinc metal in this review, the concentration is less than the 52.32 ppm.

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Introduction: Given the importance of zinc metal (zn+2) as an essential element in boil-ogical systems and the toxic effects of metals, on the other hand, and the emerg-ence of strains of Staphylococcus aureus (S. aureus) smr+ resistant to tetravalent amm-onium compounds (QACs) due to widesp-read use of materials containing Biocide QACs led to compare the sensitivity of S. aureus strains resistant to zinc and those strains having the biocide benzalkonium chloride and smr genes. Materials & Methods: S. aureus strains isolation from dairy and clinical samples was performed by using of mannitol-salt-agar medium at 37 ° C for 48 hours and the strains was identified with morphological and biochemical methods. The Smr gene was investigated by PCR and the minimum inhibitory concentration (MIC) of zinc for the bacterial strains was determined using broth microdilution. Findings: 20 strains of S. aureus were sele-ctively isolated from 40 samples of dairy and clinical. Smr genes were observed in all S. aureus strains resistant to the biocide benzalkonium chloride. The MIC concentr-ation was reported to be ppm 20. Discussion & Conclusion: The results showed that the growth of all strains of S. aureus, that is, the susceptible and the resis-tant to benzalkonium biocide zinc chloride substance is inhibited in 20 ppm concentr-ation of zinc and the presence of smr gene has no effect on resistance to zinc.

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Introduction: Suicide is a tragic and complex public health problem that affects individuals, families, and communities. The current study aimed to predict suicidal ideation based on cognitive emotion regulation strategies, perceived social support, self-efficacy, perfectionism, and spiritual health in students at Ilam universities, Ilam, Iran.
Material & Methods: The current study was a cross-sectional study conducted in 2021. A total of 463 working students studying in Ilam universities were selected and included in the study through the available sampling method. A questionnaire was used for data collection. To determine the relationship between the variables and suicidal thoughts, the Pearson correlation test was used, and to investigate the predictors associated with suicidal thoughts, stepwise regression analysis was performed.
Findings: The research results showed a significant negative relationship between the variables of perceived social support, self-efficacy, spiritual health, and positive emotion regulation strategies (i.e., acceptance, positive reorientation, planning, positive appraisal, and underestimation) and a significant positive relationship between perfectionism variables and negative emotion regulation strategies (i.e., self-blame, rumination, catastrophizing, and blaming others) with suicidal thoughts. The highest correlation coefficient was related to perceived social support, which was the most important predictive variable in this study (r=-0.71). Perceived social support, existential health, rumination, perfectionism, self-efficacy, self-blame, and acceptance variables were able to become significant as predictive variables in the regression equation. In total, these factors explained 66% of the variance of suicidal thoughts.
Discussion & Conclusion: Based on the research findings, the variables of cognitive emotion regulation strategies, perceived social support, self-efficacy, perfectionism, and spiritual health may be important components and predictors of suicidal thoughts. Therefore, it is important to pay attention to these components in suicide prevention programs and treatment and counseling methods