The electronic and optical characteristics of the Sc2 CoSi Heusler with L21 structure and also the surface effect on electronic and optical properties, and the ?lms thermodynamic stability of the [001] direction in fo...The electronic and optical characteristics of the Sc2 CoSi Heusler with L21 structure and also the surface effect on electronic and optical properties, and the ?lms thermodynamic stability of the [001] direction in four cases including:Sc-Sc, Sc-Co, Sc-Si and Co-Si terminations are studied using the ?rst principles calculations(FPLAPW) within the framework of the density functional theory(DFT). The band structure calculations represent the ferromagnetic halfmetallic properties with 100% spin polarization and 0.54 e V indirect gap in spin down for Sc2 CoSi bulk with optimized lattice parameters of 6.25 A?. The total magnetic moment obtained for this compound is-1.0 μB, which is in accordance with Slater-Pauling rule. The half-metallic(HM) behavior by 100% spin polarization at Fermi level is occurred in the Sc-Si termination with a 0.32 eV gap in down spin. The optical responses have been calculated for the bulk and ScSi termination by a red shift in these parameters and the metallic treatments have been increased. According to the thermodynamic phase diagrams, it is shown the Sc-Si and Sc-Sc terminations are more stable than other terminations.展开更多
Objective:To determine epidemiological,molecular characterization,and potential risk factors of human brucellosis.Methods:This descriptive study was carried out in the clinical setting in Iran between 2017 and 2018.A ...Objective:To determine epidemiological,molecular characterization,and potential risk factors of human brucellosis.Methods:This descriptive study was carried out in the clinical setting in Iran between 2017 and 2018.A total of 297 participants enrolled in the study.The sample size was calculated based on the occurrence rate of brucellosis in different areas.Patients were assessed using serological tests and conventional culture methods.Phage and multiplex PCR methods typed all of Brucella isolates.Potential risk factors of disease were determined.Results:A total of 141 of 297(47.5%)Brucella strains were isolated and all of them were detected as Brucella melitensis biovar 1.Based on serologic titers,high culture positivity was recorded at 1/640 titer(P<0.006).The risk factors for brucellosis were patients older than 40 years(OR=2.23,95%CI:1.4-3.55,P=0.001),animal keeper(OR=7,95%CI:1.51-32.41,P=0.005),housewife(OR=8.76,95%CI:1.85-41.37,P=0.002),farmer(OR=6.42,95%CI:1.21-33.97,P=0.019),and contact with animal(OR=1.31,95%CI:0.60-2.85,P=0.005).Conclusions:To the best of our knowledge,this is the first comprehensive report from Iran presenting the detection of Brucella species by the multiplex PCR.Brucella melitensis biovar 1 is still the dominant causative agent in Iran.The consumption of unpasteurized dairy products,living in rural areas,and animal contact were risk factors of brucellosis.展开更多
Objective:The objective of the present study is to explore the effects of personality traits on job burnout among hospital nurses.Materials and Methods:This cross-sectional research was done during 2019-2020 at Kashan...Objective:The objective of the present study is to explore the effects of personality traits on job burnout among hospital nurses.Materials and Methods:This cross-sectional research was done during 2019-2020 at Kashan Shahid Beheshti Hospital.The data analysis procedures included descriptive statistics and the partial least squares-based structural equation modeling.The participants were 150 nursing professionals.A questionnaire indicating information on demographics,burnout(measured using the Maslach Burnout Inventory with three dimensions of depersonalization,emotional exhaustion,and personal accomplishment),and personality profile(measured employing the neuroticism extraversion openness five-factor inventory including extroversion,conscientiousness,agreeableness,neuroticism,and openness to experience dimensions)was used to gather the required data.Results:The results of the study showed that the validity and reliability of the measurement model were desirable(factor load higher than 0.5,the Cronbach’s alpha value and the composite reliability are>0.7).Structural model showed statistically drastic,negative relationship between the nurses’burnout levels and neuroticism(β=0.722)and openness to experience(β=0.437).However,the relationship was significantly positive between the nurses’burnout levels and conscientiousness(β=0.672),agreement(β=0.594),and extraversion(β=0.559)(P<0.03).Conclusions:The present study helped the recognition of burnout among nurses working in hospitals and approved the effects of personality features on the burnout experience.展开更多
Objective：To compare the value of Glasgow coma scale （GCS） and cerebral state index （CSI）on predicting hospital discharge status of acute braininjured patients.Methods：In 60 brain-injured patients who did not re...Objective：To compare the value of Glasgow coma scale （GCS） and cerebral state index （CSI）on predicting hospital discharge status of acute braininjured patients.Methods：In 60 brain-injured patients who did not receive sedatives,GCS and CSI were measured daily during the first 10 days of hospitalization.The outcome of prognostic cut-off points was calculated by GCS and CSI using receiver operating characteristic （ROC） curve regarding the time of admission and third day of hospitalization.Sensitivity,specificity and other predictive values for both indices were calculated.Results：Of the 60 assessed patients,14 patients had mild,13 patients had moderate and 33 patients had severe injuries.During the course of the study,17 patients （28.3％） deteriorated in their situation and died.The mean GCS and CSI in patients who deceased during hospitalization was significantly lower than those who were discharged from the hospital.GCS＜4.5 and CSI＜64.5 at the time of admission was associated with higher mortality risk in traumatic brain injury patients and GCS was more sensitive than CSI to predict in-hospital death in these patients.For the first day of hospitalization,the area under ROC curve was 0.947 for GCS and 0.732 for CSI.Conclusion：GCS score at ICU admission is a good predictor of in-hospital mortality.GCS＜4.5 and CSI＜64.5 at the time of admission is associated with higher mortality risk in traumatic brain injury patients and GCS is more sensitive than CSI in predicting death in these patients.展开更多
Purpose:Despite advances in modern medicine,traumatic brain injuries(TBIs)are still a major medical problem.Early diagnosis of TBI is crucial for clinical decision-making and prognosis.This study aims to compare the p...Purpose:Despite advances in modern medicine,traumatic brain injuries(TBIs)are still a major medical problem.Early diagnosis of TBI is crucial for clinical decision-making and prognosis.This study aims to compare the predictive value of Helsinki,Rotterdam,and Stockholm CT scores in predicting the 6-month outcomes in blunt TBI patients.Methods:This cohort study was conducted on blunt TBI patients of 15 years or older.All of them were admitted to the surgical emergency department of Shahid Beheshti Hospital in Kashan,Iran from 2020 to 2021 and had abnormal trauma-related findings on brain CT images.The patients’demographic data such as age,gender,history of comorbid conditions,mechanism of trauma,Glasgow coma scale,CT images,length of hospital stay,and surgical procedures were recorded.The Helsinki,Rotterdam,and Stockholm CT scores were simultaneously determined according to the existing guidelines.The included patients'6-month outcome was determined using the Glasgow outcome scale extended.M Data were analyzed by SPSS software version 16.0.Sensitivity,specificity,negative/positive predictive value and the area under the receiver operating characteristic curve were calculated for each test.The Kappa agreement coefficient and Kuder Richardson-20 were used to compare the scoring systems.Results:Altogether 171 TBI patients met the inclusion and exclusion criteria,with the mean age of(44.9±20.2)years.Most patients were male(80.7%),had traffic related injuries(83.1%)and mild TBIs(64.3%).Patients with lower Glasgow coma scale had higher Helsinki,Rotterdam,and Stockholm CT scores and lower Glasgow outcome scale extended scores.Among all the scoring systems,the Helsinki and Stockholm scores showed the highest agreement in predicting patients’outcomes(kappa=0.657,p<0.001).The Rotterdam scoring system had the highest sensitivity(90.1%)in predicting death of TBI patients,whereas the Helsinki scoring system had the highest sensitivity(89.8%)in predicting the 6-month outcome in TBI patients.Conclusion:The Rotterdam scoring system was superior in predicting death in TBI patients,whereas the Helsinki scoring system was more sensitive in predicting the 6-month outcome.展开更多
Purpose： The aim of this study was to analyze the trend of road traffic fatalities in Kashan Region, lran, in a period of eight years. Methods： Through a cross-sectional study, all road traffic deaths classified und...Purpose： The aim of this study was to analyze the trend of road traffic fatalities in Kashan Region, lran, in a period of eight years. Methods： Through a cross-sectional study, all road traffic deaths classified under the VO1-V99 codes according to ICD-10 in Kashan region, central Iran, from March 2006 to March 2013 and population data were collected from the registration system of Kashan University of Medical Sciences. Years of lost life （YLL） and mortality rates were calculated regarding age, gender and year of the accident. Generalized linear model （GLM） with Poisson log-linear link was used to evaluate the effects of the mentioned variables on mortality rate. Results： During the period of the study （8 years）, 928 people （767 men） died due to road traffic injuries （RTIs）. The total YLL was 20,818. The mortality rate due to RTIs has been declined constantly from 43.1 in March 2006 to 21.1 per 100,000 in March 2013. The highest mortality rate was found in the age group of over 60 years old and the lowest in the age group of 0-14 years old. Both mortality rate and YLL was greater in men than in women. Poisson regression showed that age, gender and year of the accidents had a significant effect on mortality rate （p 〈 0.001 ）. Conclusion： Although there has been a constant decline of mortality rate in Kashan area within the study period, the value remains higher than the mean level of Eastern Mediterranean region and the global average, which is a notable fact for policymakers and authorities.展开更多
文摘The electronic and optical characteristics of the Sc2 CoSi Heusler with L21 structure and also the surface effect on electronic and optical properties, and the ?lms thermodynamic stability of the [001] direction in four cases including:Sc-Sc, Sc-Co, Sc-Si and Co-Si terminations are studied using the ?rst principles calculations(FPLAPW) within the framework of the density functional theory(DFT). The band structure calculations represent the ferromagnetic halfmetallic properties with 100% spin polarization and 0.54 e V indirect gap in spin down for Sc2 CoSi bulk with optimized lattice parameters of 6.25 A?. The total magnetic moment obtained for this compound is-1.0 μB, which is in accordance with Slater-Pauling rule. The half-metallic(HM) behavior by 100% spin polarization at Fermi level is occurred in the Sc-Si termination with a 0.32 eV gap in down spin. The optical responses have been calculated for the bulk and ScSi termination by a red shift in these parameters and the metallic treatments have been increased. According to the thermodynamic phase diagrams, it is shown the Sc-Si and Sc-Sc terminations are more stable than other terminations.
基金Kashan University of Medical Sciences supported this research(grant 95152).
文摘Objective:To determine epidemiological,molecular characterization,and potential risk factors of human brucellosis.Methods:This descriptive study was carried out in the clinical setting in Iran between 2017 and 2018.A total of 297 participants enrolled in the study.The sample size was calculated based on the occurrence rate of brucellosis in different areas.Patients were assessed using serological tests and conventional culture methods.Phage and multiplex PCR methods typed all of Brucella isolates.Potential risk factors of disease were determined.Results:A total of 141 of 297(47.5%)Brucella strains were isolated and all of them were detected as Brucella melitensis biovar 1.Based on serologic titers,high culture positivity was recorded at 1/640 titer(P<0.006).The risk factors for brucellosis were patients older than 40 years(OR=2.23,95%CI:1.4-3.55,P=0.001),animal keeper(OR=7,95%CI:1.51-32.41,P=0.005),housewife(OR=8.76,95%CI:1.85-41.37,P=0.002),farmer(OR=6.42,95%CI:1.21-33.97,P=0.019),and contact with animal(OR=1.31,95%CI:0.60-2.85,P=0.005).Conclusions:To the best of our knowledge,this is the first comprehensive report from Iran presenting the detection of Brucella species by the multiplex PCR.Brucella melitensis biovar 1 is still the dominant causative agent in Iran.The consumption of unpasteurized dairy products,living in rural areas,and animal contact were risk factors of brucellosis.
基金the Vice Chancellor of Research and Technology Kashan University of Medical Sciences for providing financial support to conduct this work(Approval code:94070).
文摘Objective:The objective of the present study is to explore the effects of personality traits on job burnout among hospital nurses.Materials and Methods:This cross-sectional research was done during 2019-2020 at Kashan Shahid Beheshti Hospital.The data analysis procedures included descriptive statistics and the partial least squares-based structural equation modeling.The participants were 150 nursing professionals.A questionnaire indicating information on demographics,burnout(measured using the Maslach Burnout Inventory with three dimensions of depersonalization,emotional exhaustion,and personal accomplishment),and personality profile(measured employing the neuroticism extraversion openness five-factor inventory including extroversion,conscientiousness,agreeableness,neuroticism,and openness to experience dimensions)was used to gather the required data.Results:The results of the study showed that the validity and reliability of the measurement model were desirable(factor load higher than 0.5,the Cronbach’s alpha value and the composite reliability are>0.7).Structural model showed statistically drastic,negative relationship between the nurses’burnout levels and neuroticism(β=0.722)and openness to experience(β=0.437).However,the relationship was significantly positive between the nurses’burnout levels and conscientiousness(β=0.672),agreement(β=0.594),and extraversion(β=0.559)(P<0.03).Conclusions:The present study helped the recognition of burnout among nurses working in hospitals and approved the effects of personality features on the burnout experience.
文摘Objective：To compare the value of Glasgow coma scale （GCS） and cerebral state index （CSI）on predicting hospital discharge status of acute braininjured patients.Methods：In 60 brain-injured patients who did not receive sedatives,GCS and CSI were measured daily during the first 10 days of hospitalization.The outcome of prognostic cut-off points was calculated by GCS and CSI using receiver operating characteristic （ROC） curve regarding the time of admission and third day of hospitalization.Sensitivity,specificity and other predictive values for both indices were calculated.Results：Of the 60 assessed patients,14 patients had mild,13 patients had moderate and 33 patients had severe injuries.During the course of the study,17 patients （28.3％） deteriorated in their situation and died.The mean GCS and CSI in patients who deceased during hospitalization was significantly lower than those who were discharged from the hospital.GCS＜4.5 and CSI＜64.5 at the time of admission was associated with higher mortality risk in traumatic brain injury patients and GCS was more sensitive than CSI to predict in-hospital death in these patients.For the first day of hospitalization,the area under ROC curve was 0.947 for GCS and 0.732 for CSI.Conclusion：GCS score at ICU admission is a good predictor of in-hospital mortality.GCS＜4.5 and CSI＜64.5 at the time of admission is associated with higher mortality risk in traumatic brain injury patients and GCS is more sensitive than CSI in predicting death in these patients.
基金This study was supported by deputy of research,Kashan University of Medical Sciences(Grant no:99116).
文摘Purpose:Despite advances in modern medicine,traumatic brain injuries(TBIs)are still a major medical problem.Early diagnosis of TBI is crucial for clinical decision-making and prognosis.This study aims to compare the predictive value of Helsinki,Rotterdam,and Stockholm CT scores in predicting the 6-month outcomes in blunt TBI patients.Methods:This cohort study was conducted on blunt TBI patients of 15 years or older.All of them were admitted to the surgical emergency department of Shahid Beheshti Hospital in Kashan,Iran from 2020 to 2021 and had abnormal trauma-related findings on brain CT images.The patients’demographic data such as age,gender,history of comorbid conditions,mechanism of trauma,Glasgow coma scale,CT images,length of hospital stay,and surgical procedures were recorded.The Helsinki,Rotterdam,and Stockholm CT scores were simultaneously determined according to the existing guidelines.The included patients'6-month outcome was determined using the Glasgow outcome scale extended.M Data were analyzed by SPSS software version 16.0.Sensitivity,specificity,negative/positive predictive value and the area under the receiver operating characteristic curve were calculated for each test.The Kappa agreement coefficient and Kuder Richardson-20 were used to compare the scoring systems.Results:Altogether 171 TBI patients met the inclusion and exclusion criteria,with the mean age of(44.9±20.2)years.Most patients were male(80.7%),had traffic related injuries(83.1%)and mild TBIs(64.3%).Patients with lower Glasgow coma scale had higher Helsinki,Rotterdam,and Stockholm CT scores and lower Glasgow outcome scale extended scores.Among all the scoring systems,the Helsinki and Stockholm scores showed the highest agreement in predicting patients’outcomes(kappa=0.657,p<0.001).The Rotterdam scoring system had the highest sensitivity(90.1%)in predicting death of TBI patients,whereas the Helsinki scoring system had the highest sensitivity(89.8%)in predicting the 6-month outcome in TBI patients.Conclusion:The Rotterdam scoring system was superior in predicting death in TBI patients,whereas the Helsinki scoring system was more sensitive in predicting the 6-month outcome.
文摘Purpose： The aim of this study was to analyze the trend of road traffic fatalities in Kashan Region, lran, in a period of eight years. Methods： Through a cross-sectional study, all road traffic deaths classified under the VO1-V99 codes according to ICD-10 in Kashan region, central Iran, from March 2006 to March 2013 and population data were collected from the registration system of Kashan University of Medical Sciences. Years of lost life （YLL） and mortality rates were calculated regarding age, gender and year of the accident. Generalized linear model （GLM） with Poisson log-linear link was used to evaluate the effects of the mentioned variables on mortality rate. Results： During the period of the study （8 years）, 928 people （767 men） died due to road traffic injuries （RTIs）. The total YLL was 20,818. The mortality rate due to RTIs has been declined constantly from 43.1 in March 2006 to 21.1 per 100,000 in March 2013. The highest mortality rate was found in the age group of over 60 years old and the lowest in the age group of 0-14 years old. Both mortality rate and YLL was greater in men than in women. Poisson regression showed that age, gender and year of the accidents had a significant effect on mortality rate （p 〈 0.001 ）. Conclusion： Although there has been a constant decline of mortality rate in Kashan area within the study period, the value remains higher than the mean level of Eastern Mediterranean region and the global average, which is a notable fact for policymakers and authorities.
