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Aim: The center of family around the mother and her presence or absence can effect on the emotional intelligence and mental health of students. In other words, working mothers inside or outside home have different effects on both the boy and girl students. Thus, this study aimed to investigate the relationship between emotional intelligence and mental health of students with working and non-working mothers. Methods: This cross-sectional study was conducted on a population consisting of all high school girls and boys in the city (total n=140). Data were gathered by a questionnaire. After verifying the validity and reliability, the data were collected, and analyzed using SPSS18 and descriptive statistics. Findings: The findings indicate that mothers’ employment brings no negative and positive consequences for emotional intelligence and mental health, though it positively affects students’ educational performance. Results also revealed that the adolescent children of employed mothers had high emotional intelligence. The female children of employed mothers showed more emotional intelligence, while there were no gender differences in the emotional intelligence of adolescent children of homemakers. Conclusion: The research finding revealed that boys and girls with working mothers have low mental health, this results approves that presence of mother at home is necessary.

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children and mothers of normal children.
Methods: This study was a comparative in terms of comparing obsessive-compulsive disorder and coping stress among mothers of disabled and normal children and correlation in terms of prediction of coping stress among two groups. All obsessive-compulsive women in Ahwaz, which was implemented on January 2017. 100 mothers of disabled children and 100 mothers of normal children were tested based on the severity of their OCD and their responses out of 40 scores: scores between 24-27, without OCD and scores between 27-32, with OCD, and scores greater than 32, very severe OCD and a functional disorder. Of these, 50 mothers of disabled children and 50 mothers of normal children having scores between 32 and 27 were selected for the test. In fact, their selection was done purposefully. Data collected with Yale–Brown Obsessive Compulsive Scale (Y-BOCS), and Coping Inventory for Stressful Situations CISS, which were analyzed with SPSS 23.
Findings: Mothers of normal children in stressfull conditions use problem-solving strategies. Approximately 68% of the variance criteria are predictable for OCD in the mothers of both disabled children and normal children. Accordingly, mothers of disabled children experience more stress than mothers of normal children.
Conclusion: Mothers of disabled children use emotion-focused and avoided strategies for coping stress.

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Surfactants are used to aid in cleaning equipment and surfaces by restaurants, dairy farms, and food processing plants and are among the basic constituents of organic pollutants in domestic as well as industrial wastewaters causing great environmental damages. Due to their high volume use, surfactant chemicals have the potential for broadscale release into aquatic and terrestrial environment. Surfactants can reach humans, animals and plants from the ground waters used as drinking water supplies. Besides the toxic effects of surfactants their existence in waters even under the toxic level causes many adverse effects on biological life. They cause pathological, physiological and biochemical effects on aquatic animals. A large number of surfactants, including the anionic types employed in the present study, have relatively low biodegradability. Due primarily to economic reasons, it is impractical to replace those low biodegradable surfactants in all household and industrial applications. In the past decades, ozonation and other advanced chemical oxidation has been suggested and investigated by many researchers for pretreatment of refractory surfactants. These investigators have found that the biodegradability of the refractory surfactants can be considerably enhanced by ozonation or photocatalytic treatment. Although effective in improving the biodegradability of refractory surfactants, strong oxidation by ozonation or photocatalytic treatment is a relatively costly method. An alternative advanced oxidation method which is as efficient and yet less expensive to implement would be highly desirable. A method meeting these requirements and deserving attention is the UV/H₂O₂ oxidation process. This method employs hydrogen peroxide (H₂O₂) and UV to form a strong oxidizing agent (hydroxyl radicals) during the oxidation process. Hydroxyl radicals have been known to possess a stronger oxidation potential than ozone, 2.8 V for OH and 2.07 V for ozone. This study carried out at a bench scale unit consisted of a batch  UV reactor with a working volume of 80 ml to evaluate efficiency of UV/H₂O₂ AOP in the degradation of surfactant from synthetic wastewater.The effects of various parameters including reaction time, H₂O₂concentration was investigated. The concentration of model surfactant was determined by the acridin orange method.The present study showed that the UV/H₂O₂ AOP have higher efficiency than singl UV and H₂O₂ processes for sodium dodecyl sulphate( SDS) anionic surfactant removal. In this process for the solution with a surfactant concentration of 700mg/L and H₂O₂ conentration of 0.5mMol, the removal efficiency of 92% was achieved with a reaction time of 30 minute. Also the degradation efficiency was found to be decreased by releasing in surfactant concentration. UV/H₂O₂ advanced oxidation process is capable of degrading the SDS surfactant from wastewater by high efficiency.

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Toluene is one of the volatile organic compounds and used extensively in industrial processes. Because of toluene effects on human health and environment, it is necessary to implement methods for toluene removal from contaminated air stream. Catalytic ozonation process (COP) is one of the emergent technologies for removal of volatile compounds from air streams. Catalytic ozonation process is an efficient, cost-effective and easy to operate for elimination of organic compounds. One of the main factors directly affecting the VOC removal efficiency and ozone destruction rate is the type of catalyst. In this study the potential of MnO/GAC and MgO/GAC catalysts was investigated for toluene elimination from air stream in the presence of ozone in a lab scale.
The MnO/GAC and MgO/GAC catalysts were prepared by Sol-gel method and then characterized by BET, XRD and SEM analysis. Specific concentrations of toluene in the air were produced by using an air pump and a syringe pump. Phocheck was used to measure the concentration of toluene in gas phase. The effect of retention time (0.5-4 Sec), inlet toluene concentration (100-400 ppmv) and air temperature (25-100˚C) were investigated on catalysts efficiency in the presence of ozone. Ozone dosage (0.1 g/h) kept constant in all experiments. The efficiency of MnO/GAC and MgO/GAC were determined from the breakthrough time and removal capacity and the results were compared statistically.
The BET surface area derived from N2 adsorption- desorption isotherms. From the results the BET surface area of MnO/GAC (1103 m2/g) was greater than that of MgO/GAC catalyst (1082 m2/g). XRD patterns clearly illustrate formation of MgO and MnO crystals on GAC surface. From XRD patterns the peaks at 2θ degrees of 50.3° and 73.8° were related to the MgO crystals. The peaks at 2θ degrees of 42.1°, 51.8° and 70.9° reveal the formation of Mn3O4. The crystallite phase of MgO and MnO was hexagonal and tetragonal respectively. The average size of MgO and MnO crystals was 10 and 12 nm, respectively, calculated using Debby-Scherrer equation. Results of experiments in different retention times showed that breakthrough time of MnO/GAC and MgO/GAC catalysts increased 11.3 and 13.9 times, respectively, by increasing retention time from 0.5 to 4 Sec. When inlet toluene concentration increased from 100 to 400 ppmv, the breakthrough time of MgO/GAC and MnO/GAC columns decreased 65% and 62.2%, respectively. In contrast, removal capacity of MgO/GAC and MnO/GAC was increased 39.1% and 50.4% by increasing inlet toluene concentration from 100 to 400 ppmv, respectively. The efficiency of MgO/GAC and MnO/GAC catalysts was increased 78.3% and 31.5% by increasing air temperature from 25 to 100 ˚C, respectively. These results demonstrates that increase of retention time and bed temperature could positively effect on the performance of MgO/GAC and MnO/GAC catalysts in toluene removal from waste air stream in the presence of ozone.
It can be concluded that MgO/GAC and MnO/GAC catalysts had high potential in VOCs removal from air stream in the presence of ozone. The difference between the efficiency of MgO/GAC and MnO/GAC catalysts was significant (P ≤ 0.05) and MgO/GAC catalyst had higher efficiency than MnO/GAC for toluene removal from waste air in the presence of ozone.

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The use of genetically engineered probiotics to express specific enzymes has been the subject of considerable attention in poultry industry because of increased nutrient availability and reduced cost of enzyme supplementation. Phytase enzyme is commonly added to poultry feed to improve digestibility and availability of phosphorus from plant sources. To construct a probiotic with potential of phytate degradation, phytase gene (appA) from E. coli was cloned and transformed into two probiotic bacteria Lactobacillus salivarius and Lactococcus lactis. The results showed plasmid instability, unable to express the gene. The expression of appA gene in L. lactis was analyzed by detecting specific RNA and zymography assay. Phytase enzyme was isolated from cellular extracts of recombinant L. lactis, showing a 46 kDa band upon the SDS-PAGE analysis. Zymogram also confirmed the phytase activity of the 46 kDa band corresponding to the enzyme. An enzyme activity of 4.9 U mL^-1 was obtained in cell extracts of L. lactis. The growth of native and recombinant L. lactis was similar in the presence of two concentrations of ox bile.

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In long-terms of overheating conditions, structural changes are the most important cause of mechanical deterioration and reduce the life of hot components. Given the difficulty or costliness of tests needed to assess the remaining life, searching for a non-destructive, simpler and more accurate way to estimate the remaining life of hot components and assess their remaining life is essential and have many economic benefits. The purpose of this study is to investigate the effect of structural changes on natural frequencies and damping coefficients of samples of carbon steel SA516-Grade55 so that, if there are significant effects, this method will be developed for other metals, in particular hot power plant parts. In this research, severe structural changes were observed on the samples by performing heat treatment of aging. As perlite decompose into ferrite and spheroidal carbides in the boundaries. With increasing structural changes, it was found that the natural frequencies of the first to sixth modes and the elastic modulus are decreased and the coefficients of damping and logarithmic decrease are increased significantly. These promising results are the elaboration of a non-destructive new method for estimating the remaining life for components of different types under long-term overheated operation conditions.

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 Risk assessment of soil erosion, one of the most important land degradation problems worldwide, is very essential for land and water resources management, and development of soil conservation methods. In the present study, the temporal changes of soil erosion risk were assessed from 1987 to 2010, based on the Revised Universal Soil Loss Equation (RUSLE) using Remote Sensing (RS) and Geographic Information Systems (GIS) for the Navrood Watershed, Iran, with an area of 270 km². Two Landsat satellite imageries obtained in 1987 and 2010 were used to assess the changes in vegetation cover during this period, and to obtain the Cover factor (C) of RUSLE. Rainfall and soil texture data and a digital elevation model were used to calculate the rest of RUSLE factors, which were taken as constant for the study period. The results showed that the average annual soil loss over the watershed ranged from 0 to 1,056 t ha^-1 y^-1(Cumulative percentage> 99.9%). The area mapped as very high erosion risk (> 100 t ha^-1 y^-1) increased from 10% in 1987 to 12% in 2010, and the area of the next risk class (51-100 t ha^-1 y^-1) increased from 8 to 9%. These changes cover an area of about 800 ha in the watershed, in which erosion risk has been doubled or tripled in the last 23 years. Forest clearing and rangeland overgrazing were identified as the most important reasons for the increase in erosion risk.

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