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Nurses'attitude toward patients'safety climate during COVID-19 pandemic:a cross-sectional study

Frontiers of Nursing 2024年第1期11卷 39-46页

作者： Asra Nassehi Kobra Ghorbanzadeh Somaye Moayedi Javad Jafari Parvin Mahmoodi mojtaba Jafari Department of Nursing Bam University of Medical SciencesBamIran Department of Nursing Khalkhal University of Medical SciencesKhalkhalIran Community Nursing Research Center Department of NursingZahedan University of Medical SciencesZahedanIran Clinical Care Research Center Department of NursingNursing and Midwifery SchoolKurdistan University of Medical SciencesSanandajIran

Objective:Patient safety is a fundamental factor in improving the quality of care provided in ***,it is considered a significant parameter by all healthcare organizations around the *** present study was conducted to investigate the attitude of nurses toward the patient safety climate during the Coronavirus Disease 2019(COVID-19)pandemic in the southeast of ***:This is a cross-sectional descriptive *** all the nurses working in one of the hospitals in the southeast of Iran,171 nurses participated in the study through convenience sampling *** survey was conducted between June 1 and July 30,2020.A 2-part questionnaire including demographic information and an assessment of nurses'attitudes toward patients'safety climate was used for data collection in *** content validity of the scale is(0.77)and reliability was re-calculated and confirmed by the present study with Cronbach's alpha(α=0.9).Data were analyzed by SPSS 20(IBM Corporation,Armonk,New York,United States)using descriptive and analytical statistical ***:The mean score of safety climates was 3.2±5.20(out of 5 scores).The results showed that among all dimensions of the safety climate,only the education dimension was statistically significant between males and females(P<0.001).Also,there was a significant relationship between the overall average of the safety climate and its dimensions according to the people's position only in the dimension of supervisors'attitude(P<0.01)and burnout(P<0.01).Additionally,a significant correlation between the education level and the overall score of safety climate(P<0.01),as well as the supervisor's attitude dimension(P<0.01),was ***:The results showed that the safety climate was at a relatively favorable *** the impact of nurses'attitudes on the safety climate of patients,its improvement seems *** is recommended to design training courses and educate nurses in order to promote a p

关键词： COVID-19 Iran nurses patient safety climate

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Exploring the relationship between ambient sulfur dioxide and semen quality parameters:A systematic review and meta-analysis

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Asian pacific Journal of Reproduction 2024年第1期13卷 12-21页

作者： Seyed Sobhan Bahreiny mojtaba Aghaei Mohammad Reza Dabbagh Hamid Ghorbani Moslem Javidan Reza Mohammadpour Fard Student Research Committee Ahvaz Jundishapur University of Medical SciencesAhvazIran Medical Basic Sciences Research Institute Physiology Research CenterDepartment of PhysiologySchool of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran Department of Biology Faculty of ScienceShahid Chamran University of AhvazAhvazIran Department of Immunology Faculty of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran

Objective:To investigate the relationship between ambient sulfur dioxide(SO2)exposure and semen quality ***:A systematic literature search was conducted to identify relevant studies investigating the association between SO2 exposure and semen quality *** search encompassed the timeframe from January 2000 to May 2023 and included electronic databases such as Web of Science,Google Scholar,PubMed,Cochrane,and *** effect estimates with 95%confidence intervals(CI)were calculated using percent changes(PC).The meta-analysis included seven studies with 6711 participants and 15087 semen ***:The results revealed a significant negative association between ambient SO2 exposure and certain semen quality *** particular,SO2 exposure was associated with a significant decrease in progressive motility(PC=0.032;95%CI:-0.063 to-0.001;P=0.044)and sperm concentration(PC=-0.020;95%CI:-0.036 to-0.005;P=0.012).However,no statistically significant associations were observed for total sperm count(PC=-0.038;95%CI:-0.079 to 0.003;P=0.070),seminal fluid volume(PC=-0.009;95%CI:-0.048 to-0.030;P=0.662)and sperm motility(PC=-0.17;95%CI:-0.363 to 0.022;P=0.830).In addition,the results of the subgroup analysis revealed specific variables that were associated with the decrease in relevant sperm ***:This systematic review and meta-analysis provides compelling evidence supporting a consistent negative association between exposure to ambient SO2 and semen quality parameters.

关键词： Semen quality Sulfur dioxide Ambient air pollution Meta-analysis

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Circulating levels of advanced glycation end products in females with polycystic ovary syndrome:a meta-analysis

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Reproductive and Developmental Medicine 2024年第2期8卷 93-100页

作者： Seyed Sobhan Bahreiny Akram Ahangarpour mojtaba Aghaei Student Research Committee Ahvaz Jundishapur University of Medical SciencesAhvazIran Medical Basic Sciences Research Institute Physiology Research CenterDepartment of PhysiologySchool of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran

Polycystic ovary syndrome(PCOS)is a common endocrine disorder characterized by a hormonal imbalance that affects females of reproductive *** association between advanced glycation end products(AGEs)and PCOS has attracted considerable attention in recent years,highlighting the potential of AGEs as biomarkers for this *** the present systematic review and meta-analysis,we aimed to examine the association between AGEs and PCOS,evaluate their potential as biomarkers,and improve our understanding of the pathophysiology of PCOS and its associated metabolic complications.A literature search was performed using various databases from January 2000 to March 2023 to identify relevant studies investigating the association between AGEs and *** effect estimates were calculated using standardized mean differences(SMD)with 95%confidence intervals(CIs).Sub-group and meta-regression analyses were performed to examine potential sources of *** meta-analysis included six studies with a total of 623 *** results revealed a significant increase in circulating AGE levels in females with PCOS compared to healthy females(SMD=2.35;95%CI:1.10-3.60;P<0.001).Significant heterogeneity was observed between the studies(I2=96.37%;P<0.001),indicating the presence of several factors influencing the ***-group analyses based on body mass index,age,and homeostatic model assessment for insulin resistance indicated differential effects of AGEs on specific *** systematic review and meta-analysis support the association between elevated AGE levels and PCOS,thereby suggesting the potential role of AGEs as biomarkers in PCOS.

关键词： Polycystic ovary syndrome PCOS Advanced glycation end products AGEs Biomarker Meta-analysis

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Exploring the relationship between Hashimoto's thyroiditis and male fertility:A meta-analytic and meta-regression perspective on hormonal and seminal factors

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Asian pacific Journal of Reproduction 2024年第4期13卷 147-159页

作者： Seyed Sobhan Bahreiny mojtaba Aghaei Mahdi Amraei Mohammad Reza Dabbagh Student Research Committee Ahvaz Jundishapur University of Medical SciencesAhvazIran Medical Basic Sciences Research Institute Physiology Research CenterDepartment of PhysiologySchool of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran Thalassemia&Hemoglobinopathy Research Center Health Research InstituteAhvaz Jundishapur University of Medical SciencesAhvazIran USERN Office Ahvaz Jundishapur University of Medical SciencesAhvazIran Department of Biology Faculty of ScienceShahid Chamran University of AhvazAhvazIran

Objective:To explore the relationship between Hashimoto's autoimmune hypothyroidism(HT)and male fertility,focusing on hormonal and seminal ***:A systematic literature search was conducted across databases such as PubMed,Web of Science,EMBASE,Scopus,Cochrane,and Google Scholar,covering studies published from January 2000 to March *** investigating the impact of HT on semen quality parameters and reproductive hormones were *** effect estimates were calculated using standard mean difference(SMD)and 95%confidence intervals(CI).Results:A total of 8 studies with 8965 participants were *** significantly affected semen quality and reproductive hormone ***,there was a notable decrease in progressive morphology(SMD=-0.78;95%CI:-1.40 to-0.17;P=0.01)and sperm motility(SMD=-1.151;95%CI:-1.876 to-0.425;P=0.002).In addition,there were no significant changes in reproductive hormones,although there were elevated levels of luteinizing hormone(SMD=0.437;95%CI:0.000 to 0.874;P=0.050)and follicle-stimulating hormone(SMD=0.293;95%CI:-0.171 to 0.758;P=0.216),with a slight impact on testosterone levels(SMD=-1.143;95%CI:-2.487 to 0.200;P=0.095).Conclusions:This systematic review and meta-analysis provides robust evidence of the detrimental effects of HT on semen quality and reproductive hormones,underscoring the necessity for thorough evaluation and management of thyroid function in male infertility assessments.

关键词： Hashimoto thyroiditis Male fertility Semen quality Reproductive hormones Meta-analysis Meta-regression

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Impacts of oak deforestation and rainfed cultivation on soil redistribution processes across hillslopes using ^(137)Cs techniques

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Forest Ecosystems 2021年第3期8卷 425-438页

作者： Shamsollah Ayoubi Nafiseh Sadeghi Farideh Abbaszadeh Afshar Mohammad Reza abdi mojtaba Zeraatpisheh Jesus Rodrigo-Comino Department of Soil Science College of AgricultureIsfahan University of TechnologyIsfahan 84156-83111Iran Department of Soil Science College of AgricultureUniversity of JiroftKermanIran Department of Physics Faculty of ScienceUniversity of IsfahanIsfahan 81747-73441Iran Henan Key Laboratory of Earth System Observation and Modeling Henan UniversityKaifeng 475004China College of Environment and Planning Henan UniversityKaifeng 475004China Department of Physical Geography University of TrierTrierGermany Soil Erosion and Degradation Research Group Department of GeographyUniversitat de ValènciaValenciaSpain

Background:As one of the main components of land-use change,deforestation is considered the greatest threat to global environmental diversity with possible irreversible environmental ***,one example could be the impacts of land-use changes from oak forests into agricultural ecosystems,which may have detrimental impacts on soil mobilization across ***,to date,scarce studies are assessing these impacts at different slope positions and soil depths,shedding light on key geomorphological ***:In this research,the Caesium-137(^(137)Cs)technique was applied to evaluate soil redistribution and soil erosion rates due to the effects of these above-mentioned land-use *** achieve this goal,we select a representative area in the Lordegan district,central Iran.^(137)Cs depth distribution profiles were established in four different hillslope positions after converting natural oak forests to rainfed *** each hillslope,soil samples from three depths(0–10,10–20,and 20–50 cm)and in four different slope positions(summit,shoulder,backslope,and footslope)were taken in three transects of about 20m away from each *** activity of ^(137)Cs was determined in all the soil samples(72 soil samples)by a gamma *** addition,some physicochemical properties and the magnetic susceptibility(MS)of soil samples were ***:Erosion rates reached 51.1 t·ha^(−1)·yr^(−1) in rainfed farming,whereas in the natural forest,the erosion rate was 9.3 t·ha^(−1)·yr^(−1).Magnetic susceptibility was considerably lower in the cultivated land(χhf=43.5×10^(−8)m^(3)·kg^(−1))than in the natural forest(χhf=55.1×10^(−8)m^(3)·kg^(−1)).The lower soil erosion rate in the natural forest land indicated significantly higher MS in all landform positions except at the summit one,compared to that in the rainfed farming *** shoulder and summit positions were the most erodible hillslope positions in the natural forest and rainfed farming,res

关键词： Land-use change Soil redistribution Topographical changes Radionuclide Rainfed farming Deforestation

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Voronoi Based Discrete Least Squares Meshless Method for Heat Conduction Simulation in Highly Irregular Geometries

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Chinese Journal of Mechanical Engineering 2016年第1期29卷 98-111页

作者： LABIBZADEH mojtaba Assistant Professor of Structural Engineering Civil Engineering DepartmentFaculty of EngineeringShahid Chamran University

A new technique is used in Discrete Least Square Meshfree（DLSM） method to remove the common existing deficiencies of meshfree methods in handling of the problems containing cracks or concave boundaries. An enhanced Discrete Least Squares Meshless method named as VDLSM（Voronoi based Discrete Least Squares Meshless） is developed in order to solve the steady-state heat conduction problem in irregular solid domains including concave boundaries or cracks. Existing meshless methods cannot estimate precisely the required unknowns in the vicinity of the above mentioned boundaries. Conducted researches are limited to domains with regular convex boundaries. To this end, the advantages of the Voronoi tessellation algorithm are implemented. The support domains of the sampling points are determined using a Voronoi tessellation algorithm. For the weight functions, a cubic spline polynomial is used based on a normalized distance variable which can provide a high degree of smoothness near those mentioned above discontinuities. Finally, Moving Least Squares（MLS） shape functions are constructed using a varitional method. This straight-forward scheme can properly estimate the unknowns（in this particular study, the temperatures at the nodal points） near and on the crack faces, crack tip or concave boundaries without need to extra backward corrective procedures, i.e. the iterative calculations for modifying the shape functions of the nodes located near or on these types of the complex boundaries. The accuracy and efficiency of the presented method are investigated by analyzing four particular examples. Obtained results from VDLSM are compared with the available analytical results or with the results of the well-known Finite Elements Method（FEM） when an analytical solution is not available. By comparisons, it is revealed that the proposed technique gives high accuracy for the solution of the steady-state heat conduction problems within cracked domains or domains with concave boundaries a

关键词： Discrete Least Squares Meshless crack Voronoi tessellation concave boundaries Steady-state heat conduction.

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Which Information Theoretic Quantity Should We Choose for Steric Analysis of Water Nanoclusters(H2O)n(n=6,32,64)?

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物理化学学报 2018年第4期34卷 407-413页

作者： ALIPOUR mojtaba Department of Chemistry College of Sciences Shiraz University Shiraz Iran.

As evidenced from recent literature,interest in employing information theory measures for understanding different properties of atomic and molecular systems is increasing *** our earlier efforts in this field,we here evaluate the feasibility of using information theory functionals such as Fisher information,Shannon entropy,Onicescu information energy,and Ghosh-Berkowitz-Parr entropy as measures of steric effects for the steric analysis of water *** the structural isomers of water hexamers as working models and using information theoretic quantities,we show that the relative energies of water nanoclusters and the computed steric energies are *** also show the strong effects of steric repulsion on conformational *** the same time,we have also assessed the usefulness of simultaneously considering the different information theoretic quantities,and achieved more accurate descriptions of the stability of water *** order to consider the effects of cluster size on the obtained results and the extent of applicability of information theoretic quantities,we have also benchmarked larger water nanoclusters with 32 and 64 *** the obtained data from information theory functionals,we found that Fisher information shows the best overall *** findings underline that the information theoretic quantities,especially Fisher information,can be used as quantitative measures of relative energies and consequently the order of stability of nanoclusters,which affirmed the utility of information theory for investigating various physical and chemical problems.

关键词：物理学化学教材高校

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Numerical study of a multiple post-tensioned rocking wall-frame system for seismic resilient precast concrete buildings

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Earthquake Engineering and Engineering Vibration 2022年第2期21卷 377-393页

作者： Afshin Naserpour mojtaba Fathi Department of Civil Engineering Engineering FacultyRazi UniversityKermanshah ***Iran

A multiple rocking wall-frame(MRWF)system,in which the wall panels are directly connected to the adjacent beams and foundation is presented *** the MRWF system,the unbonded post-tensioned(PT)tendons are used to promote the self-centering ability,and O-shaped steel dampers are applied to enhance the energy dissipation capacity and reparability of the ***,analytical equations are proposed to determine the behavior of the O-shaped ***,the MRWF system is numerically evaluated for five different models consisting of rocking walls with varying numbers and arrangements while keeping the total effective width of wall panels *** numerical results show that with an increase in the number of wall panels and a decrease in the wall width,the hysteretic behavior of the MRWF system tends to the ideal flag-shaped pattern,resulting in little damage to the beams,insignificant strain in the wall toe,negligible residual drifts and damage index of less than 0.2 under severe *** contrast,the conventional model demonstrates extensive damage to the structural elements due to undesirable wall-to-frame interaction,which leads to a damage index of 0.78 and residual drifts of 0.42%under seismic loads.

关键词： precast wall-frame system rocking behavior post-tensioning O-shaped steel damper residual drift

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DYNAMIC BEHAVIOR OF SEVERAL CRACKS IN FUNCTIONALLY GRADED STRIP SUBJECTED TO ANTI-PLANE TIME-HARMONIC CONCENTRATED LOADS

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Acta Mechanica Solida Sinica 2013年第6期26卷 691-705页

作者： mojtaba Ayatollahi Rasul Bagheri Faculty of Engineering University of ZanjanP.O.Box 45195-313ZanjanIran

This paper contains a theoretical formulations and solutions of multiple cracks sub- jected to an anti-plane time-harmonic point load in a functionally graded strip. The distributed dislocation technique is used to construct integral equations for a functionally graded material strip weakened by several cracks under anti-plane time-harmonic load. These equations are of Cauchy singular type at the location of dislocation, which are solved numerically to obtain the dislocation density on the faces of the cracks. The dislocation densities are employed to evaluate the stress intensity factor and strain energy density factors （SEDFs） for multiple cracks with differ- ent configurations. Numerical calculations are presented to show the effects of material properties and the crack configuration on the dynamic stress intensity factors and SEDFs of the functionally graded strip with multiple curved cracks.

关键词： anti-plane functionally graded strip multiple cracks screw dislocation

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The influence of surface effects on Frederiks transition in nematic liquid crystal doped with ferroelectric nanoparticles

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Chinese Physics B 2018年第4期27卷 357-362页

作者： Erfan Kadivar mojtaba Farrokhbin Department of Physics Shiraz University of Technology Department of Physics Faculty of SciencesYazd University

Motivated by our recent work,in this work,we present the numerical study of the anchoring effect on the Frederiks threshold field in a nematic liquid crystal doped with ferroelectric colloidal *** weak anchoring conditions,we employ the relaxation method and Maxwell construction to numerically solve the Euler–Lagrangian differential equation for the total free energy together the Rapini–Papoular surface energy to take into account anchoring of nematic liquid crystal molecules at the *** this study,we focus our attention on obtaining the phase diagrams of Frederiks transition for different values of anchoring strength which have been not computed in our previous *** this way,the effect of nanoparticle radius,nanoparticle volume fraction,nanoparticle polarization,and cell thickness on the Frederiks transition for different values of anchoring conditions are summarized in the phase *** numerical results show that by increasing the nanoparticles size and nanoparticle volume fraction in the ferronematic system,the Frederiks threshold field is strongly reduced.

关键词： anchoring surface effect ferronematics Frederiks transition Maxwell construction

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