Factor structure and validity of Cognitive adjustment as an indicator of psychological health at work

Background and aims: Mental health has been defined as one of the basic principles of psychological health. Mental health along with mental experience of anxiety and calmness should also assess the individual’s performance at work. The main aim of the current study was to carry out factor analysis and validation of the questionnaire for cognitive adjustment at work. Methods: The research scheme utilized by the study is the methodology approach and the study is a Methodological. The statistical population of the study include all the students at Yasouj Medical University, from which 215 participants were selected using the convenient sampling method as the sample of the study. Then, the questionnaire of cognitive adjustment at work, developed by Malo, Tremblay, and Brunet, was distributed among the sample. This scale was translated into Persian and then re-translated into English. Some experts studied the questionnaire to determine the cultural sensitivities, the clarity of questions, the number of differences and errors in meaning construction. Results: The findings showed that Cronbach Alpha coefficient was 0.87 for the whole questionnaire and varied from 0.76 to 0.81 for subscales. All items had acceptable correlation. The test-retest results indicated the stability of the questionnaire of students' attitude toward police and its subscales. The exploratory factor analysis indicated 3 acceptable subscales. Conclusion: The results showed that the Persian version of the work environment cognitive adjustment questionnaire has acceptable reliability and validity. In order to measure working mental health along with the components of psychological health, it can be used the questionnaire with Iranian samples

HYPEROXIC PRECONDITIONING FAILS TO CONFER ADDITIONAL PROTECTION AGAINST ISCHEMIA-REPERFUSION INJURY IN ACUTE DIABETIC RAT HEART

Experimental studies show that detrimental effects of ischemia-reperfusion (I/R) injury can be attenuated by hyperoxic preconditioning in normal hearts, however, there are few studies about hyperoxia effects in diseased myocardium. The present study was designed to assess the cardioprotective effects of hyperoxia pretreatment (≥ 95 % O2) in acute diabetic rat hearts. Normal and one week acute diabetic rats were either exposed to 60 (H60) and 180 (H180) min of hyperoxia or exposed to normal atmospheric air (21 % O2). Then hearts were isolated immediately and subjected to 30 min of regional ischemia followed by 120 min of reperfusion. Infarct size, cardiomyocyte apoptosis, enzymes release and ischemia induced arrhythmias were determined. Heart of diabetic control rats had less infarct size and decreased LDH and CK-MB release compared to normal hearts. 60 and 180 min of hyperoxia reduced myocardial infarct size and enzymes release in normal hearts. 180 min of hyperoxia also decreased cardiomyocytes apoptosis in normal state. On the other hand, protective values of hyperoxia were not significantly different in diabetic hearts. Moreover, hyperoxia reduced severity of ventricular arrhythmias in normal rat hearts whereas; it did not confer any additional antiarrhythmic protection in diabetic hearts. These findings suggest that diabetic hearts are less susceptible to ischemia-induced arrhythmias and infarction. Hyperoxia greatly protects rat hearts against I/R injury in normal hearts, however, it could not provide added cardioprotective effects in acute phase of diabetes

Estudio experimental de la acumulación de partículas atmosféricas de cristales en la transmisión de luz diurna

La luz del día es una de las fuentes de luz más importantes que podría iluminar los espacios interiores al pasar a través de ventanas y colectores de luz. La acumulación de polvo y aerosoles en los cristales de las ventanas reduce la cantidad de luz que pasa a través de ellos. El objetivo principal de esta investigación es determinar el impacto de la deposición de partículas en el aire sobre la cantidad de luz pasada. En este experimento, se obtuvieron las partículas más prevalentes, como el polvo, el carbono y una mezcla de ambos examinados con vidrios comerciales comunes de 3 mm en cristales de vidrios simples y dobles y se obtuvieron varias observaciones interesantes. El resultado de este experimento ayudará a los propietarios de edificios a ajustar un programa de limpieza de ventanas para reducir el consumo y los gastos de electricidad de iluminació

Estudio experimental de la acumulación de partículas atmosféricas de cristales en la transmisión de luz diurna

Daylight is one of the most significant light source which could illuminate interior spaces by passing through windows and light collectors. Dust and aerosol accumulation on windowpanes reduce the light amount passing through it. The main objective of this research is to determine the impact of airborne particulate matters deposition on past light quantity. In this experiment the most prevalent particulate matters such as dust, carbon, and a mixture of both examined with 3 mm common commercial glasses at single and double glaze windowpanes and several interesting observations have been obtained. The result of this experiment will help building owners to adjust a window-cleaning schedule to reduce their lighting electricity consumption and expenses.La luz del día es una de las fuentes de luz más importantes que podría iluminar los espacios interiores al pasar a través de ventanas y colectores de luz. La acumulación de polvo y aerosoles en los cristales de las ventanas reduce la cantidad de luz que pasa a través de ellos. El objetivo principal de esta investigación es determinar el impacto de la deposición de partículas en el aire sobre la cantidad de luz pasada. En este experimento, se obtuvieron las partículas más prevalentes, como el polvo, el carbono y una mezcla de ambos examinados con vidrios comerciales comunes de 3 mm en cristales de vidrios simples y dobles y se obtuvieron varias observaciones interesantes. El resultado de este experimento ayudará a los propietarios de edificios a ajustar un programa de limpieza de ventanas para reducir el consumo y los gastos de electricidad de iluminación

Relationship Between Personality Dimensions and Hopelessness: A Study on College Students

AbstractAim: the aim of this study was to investigate the relationship between personality dimensions and hopelessness.Method: in this descriptive and cross-sectional study, 120 college students from Kermanshah University were selected by convenience sampling method as research sample. NEO-FFM Questionnaire and Beck's Hopelessness Scale were used to collect data. Descriptive statistical indicators (statistics), such as frequency, mean, standard deviation and Pearson's correlation test were utilized to analyze the data.Results: the findings showed that there is significant relationship between hopelessness and extraversion (r= -0/58, p> 0/01), conscientiousness (r= 0/60, p> 0/01), neuroticism (r= 0/54, p> 0/01) and agreeableness (r= -0/50, p> 0/01). The relationship between hopelessness and openness was not significant.Conclusion: these results suggests that personality dimensions of conscientiousness, neuroticism, extraversion and agreeableness have essential roles in hopelessness of college student

Assessing biotic and abiotic characteristics of fisheries communities in Shadegan Wetland

Shadegan wetland is one the international wetland which is registered in UNESCO and it is located in south of Khuzestan. This wetland have three zones: freshwater zone, intertidal zone and coastal zone with saltwater. The wetland is located in warm and arid region. This study was done in freshwater zone with the aim of finding solutions for integrated management to improve water quality of this habitat by monitoring of environmental trends and assessing the present situation. This study was done from March 2010 to February 2011 in four area of Shadegan wetland. The water quality index results showed that all stations of Shadegan wetland are categorized as group three with moderate quality. Rogbe station have the highest quality and Maleh have the lowest quality. Finally we can conclude that wastewater of sugarcane plants have negative effect and Azadegan sewage have positive effect on the wetland, and Maleh inlet can have the most negative effect on water quality. The amount of dissolved oxygen, BOD5, nitrite and phosphate decreased and conductivity, salinity, TDS and nitrate increased that can be due to water scarcity and droughts in the region. 6 class and 54 genius of phytoplankton were identified. Bacillariophycae with 20 genius have (52%) and chlorophycae with 22 genius (14%) have the highest frequency percentage of total frequency. The average value of chlorophyll a was 10.95 mg/m3 per year and the annual average primary production was 2.68 g/c/m2 in a day which Rogbe and Maleh had the highest and lowest value respectively and eutrophication floating plankton were in high mesotrophic. 18 epipleon and 27 epiphyton genius of benthic algae were identified which Bacillariophycae and cyanophycae were dominant. Chlorophyll a was the most common pigment and the wetland diversity index indicated semi polluted situation and eutrophication statues was high mesotrophic to eutrophic and based on Palmer index, the wetland had no severe organic pollution. Brachionus spp from zooplankton rotifer increased in summer due to high tolerance of salinity. Wetland zooplankton index indicates low quality of wetland situation. In substrate with vegetation, 15 groups of macrofauna of benthos were identified and Chironomidae had the highest frequency. In sedimentary substrate, 7 groups of macrobenthos were observed which in comparison to 1995 they severely decreased. These changes can be due to drought, sewage entrance, habitat degradation and ecosystem disturbances. Satellite studies of the Shadegan wetland show that 69,945 hectares are suitable for aquatic life

Ecological monitoring in shadegan wetland

Shadegan wetland is located in the southwest of Iran and consists of three parts water: Fresh water, tidal-coastal zones and salt water. Climate is warm and dry. Although Surface of Wetlands is different seasons, but the study area is approximately 126945 hectares. Water quality in Shadegan Wetland is brackish water to salt and the hardness of the water component is hard to classify. The BOD5 of water is shows relatively clean to be suspicious. Values of pH, temperature, dissolved oxygen, BOD5, nitrite, phosphate, ammonia and TSS than the previous year are decreased and in this study salinity has increased electrical conductivity, total hardness, TDS and nitrate. In this study have been identified 42 genuses of phytoplankton in four groups: Bacillariophycea (diatoms), Cyanophyceae, Chlorophyceae and Dinophyceae that's diatoms are the most dominant. Also 24 genuses of zooplankton have been identified in four groups: protozoa, Rotifer, Copepod and Cladocera that are rotifer are the most dominant. Doraq and Atish stations have the most of abundance of plankton. Phytoplankton biodiversity is greatest at stations Rgbh and Atish. The average annual primary production 610 gC/m^2 /year and its placed the middle class on fertility. Average annual primary production in the phytobenthose 486 gC/m^²/year and the average monthly range of chlorophyll a and primary production 0.54-11.65 mg/m^² and 0.1-3.45 gC/m^²/day respectively. The amount average chlorophyll a is greater in Gargar, Maleh and Rgbh stations. The size of the wetland sediments had not important role in the phytobenthose production. The survey identified that 14 groups of macro benthic that’s Chironomidae families have the highest frequency. The highest and the lowest frequency in Atish and Doraq stations respectively. In the all stations have high SiltClay and organic matter in sediments is more in Maleh station from other areas. Macro benthos of the Rgbh and Atish stations more presents of the larvae that’s resistant to pollution of Chironomidae. Assessment of fish stocks of the common carp pond shows that the highest biomass (52.63 kg per hectare) and lowest Shiq fish (0.33 kg per hectare). The highest biomass are in autumn (337.17 kg per hectare) and lowest in summer (83.19 kg per hectare) and the average amount of biomass in total during the year were calculated 197.57 kg per hectare Shadegan Wetland. The amount of fish is obtained about 2.62 in Shadegan, which indicates the moderate wetland condition. The most of species spawning season are overlapped with each other, which occurs in winter and spring. The length - weight of fish indicating their growth is isometric

Prevalence, causes, and complications of acute kidney transplant rejection: survey in a single center

Backgrounds: Kidney transplantation has become a preferred surgical approach for several renal disorders. To acquire required information in basis of acute transplant rejection and its complications, it is important to determine rejection prevalence and its potential causes.Methods: In present retrospective study, during a 37-year survey, 2250 patients received conventional kidney transplantation. The patients who had suffered graft loss, death, and nephrectomy of transplanted kidney during the first month after transplantation enrolled the study and all required data recorded in designed questionnaire. Results: Of 2557 patients underwent kidney transplantation, 86 (3.36%) patients were suffered acute graft loss during the first month after transplantation, that 43 (50%) were males and 43 (50%) were females. Mean age of the patients with acute graft loss was 40.09±14.09. The most common underlying cause for acute graft loss in our study were as follows: acute rejection of transplanted kidney (34.9%), renal vein thrombosis (17.5%), heart infarction (13.9%), idiopathic (6.9%). Of 86 patients, thirty-three patients underwent nephrectomy subsequent to rejection, however, fifty-three patients well responded to medical treatment. In our study the amount of acute nephrectomy during the first month after transplantation was 38.4% (33 patients) which constituted 1.2% of the total graft losses.Conclusion: Renal vein thrombosis is the most common underlying reason for graft loss in kidney transplantation patients, and 1st week of the transplantation is the most probable postoperative time for graft rejection