فهرست مطالب محدثه محمدی

Due to the existing competitive environment that makes the presence of talented human resources in organizations an inevitable necessity, organizations need to use human resource development strategies for organizational development. the effective approaches in the field of human resource development is coaching. the present research; With the aim of investigating the impact of coaching on employee performance with the intermediary role of reward and appreciation, commitment and learning of employees in Golestan Gas Company, it has been done. it is of applied type and in terms of method, it is descriptive-survey type of research. The population of this research; All the official employees of Golestan Gas Company are 184 people, and according to Kerchesi and Morgan's table, 124 were selected as a sample by simple random sampling method. A questionnaire was used to collect data, confirming its validity and reliability. structural equation modeling method and SPSS and Smart PLS software were used. The current research had nine hypotheses that the findings of this research show the relationship between coaching and reward and appreciation, coaching and commitment, coaching and employee learning; It is positive and meaningful. Also reward and appreciation and performance, commitment and performance and learning and performance of employees; They have a positive and meaningful relationship with each other., reward and appreciation, commitment and learning; They significantly mediate the relationship between coaching and employee performance, and their mediating role was confirmed.

The proximity of elastomers to fuel leads to fuel absorption and swelling. The solubility coefficient plays a role as an effective factor in the absorption of fuel by rubber and the swelling phenomenon. Inflation is a phenomenon of control penetration; which depends on the chemical nature of the polymer and solvent. The solubility coefficient of tetralin fuel was calculated ( ) using four methods the equilibrium swelling diagram, volumetric mass, light refractive index and enthalpy of evaporation. The presence of fuel exposed to the rubber leads to negative effects on its properties and causes a decrease in properties and a reduction in the useful life of the rubber part. By increasing the difference between the solubility coefficient of the fuel and the rubber, the swelling decreases and consequently reduces the loss of the properties of the rubber mixture. The NBR compound with filler swollen in tetralin fuel, a decrease in tension properties equal to 67%, strength 59% and for NBR compound non-filler decrease of tension 76% and strain 77% has been observed. Also, it has observed the energy of break for NBR compound with filler swollen 83% and NBR compound non-filler 88%.

Today, one of the socio-economic inadequacies facing the rural society of Iran is the indiscriminate migration and the evacuation of efficient and young workers from the villages. The phenomenon of migration exists in both developed and developing countries. But its type and nature are different in the countries, however, all the evidences indicate that young people are willing to migrate more than other age groups. The present research, which is of an applied type, has investigated the strategies for the sustainability of the young population in the village of Ishaq Abad, Kashmir, with a descriptive-analytical method and through the collection of library materials and a survey (questionnaire). Among the important issues that the villages are facing today is the process of the young and active population leaving the villages, which endangers the stability of human communities. The main issue of this research is to investigate the factors affecting the longevity of the rural youth in the villages. The findings show that the variables of the situation Employment, education, type of job, amount of monthly household income, etc., play an essential role in the longevity of young people in the village. The most important factors that repel young people from rural communities and their tendency to migrate to urban communities are: lack of welfare facilities, Lack of health facilities, lack of educational and cultural facilities, lack of suitable jobs and work problems, lack of means of transportation, etc. In addition to these, creating a negative image of the village and presenting a positive image of the cities weakens the sense of belonging to the village among the youth. And it facilitates and accelerates the process of leaving the village among the young people. Finally, the young people living in the rural areas of Ishaq Abad in Kashmir know the elements such as the availability of welfare facilities, education, services, health-treatment, etc., which can keep the young people in the village. and prevent them from flowing to urban areas.

Employment is an effective factor in each person’s life. In particular, the employment of the disabled should be specifically attended by the authorities considering their equal chance of opportunity in society, access to job, and preventing discrimination. The aim of current research is to analyze the public policy making in the field of disabled employment in Iran. The study uses descriptive-analytic approach through systemic analysis. The research tried to employ CIPP method and theory of justice as fairness, to support the possibilities of disabled employment. Also, the design, execution, and the results of the policies in the same subject are investigated. The findings indicated that there is weakness in the area of execution, and as the situation of the disabled is improving, so more supervision should be done.

Severe acute respiratory syndrome coronavirus 2 or COVID-19 has become a major concern for health care professionals. Dentistry, because of the close contact with patients has a high risk of infection in students for this disease. This study aimed to assess dental students’ attitude, and perception regarding the coronavirus disease.

This descriptive cross-sectional study was conducted in 2020 on 111 dental students of fourth to sixth year using census method. An online questionnaire from Khader et al. study about awareness of the incubation period, the symptoms of the disease, mode of transmission of COVID-19, infection control measures for preventing COVID-19; and their attitude toward treating patients with COVID-19 was applied. Data were analyzed by SPSS ver.26, t-test and ANOVA. The significance level was set as P-Value≤0.05.

Dental students were aged 21 to 36 years (mean 23.89 years, SD 2.73 years). A total of 90 (81.1%) dental students had received training in infection control in dentistry, and 3 (2.7%) had attended training or lectures regarding COVID-19. The mean scores for awareness and attitude-perception were 33.55±4.19 and 6.23±1.61, respectively. There were no significant differences in the level of awareness and attitude-perception between genders and different academic years.

The findings of the present study showed that dental students’ awareness, attitude and perception towards COVID-19 are at an average level. Therefore, there is an important need for improving dental student in this era via health education and training programs.

Stroke is a neurological disease and one of the leading causes of death all over the world. It is also an important cause of disability in people over age over 65. It may be possible to reduce the incidence of cerebral ischemia using antioxidants, followed by inhibition of oxidative and inflammatory mechanisms. Troxerutin is a natural bioflavonoid with antioxidant and anti-inflammatory properties. However, its neuroprotective effects have not yet been studied. The present study aimed to investigate the effect of troxerutin on ischemic brain damage in male mice.

In this experimental study, 39 male mice (30-25 grams) were used. The animals were divided into three groups: 1. Sham group 2. Ischemic brain group 3. The ischemic brain group, receiving troxerutin drug. Cerebral ischemia was induced in the second and third groups of mice. Five hours later, group 3 received 300 mg/kg troxerutin intraperitoneal injection. After 24 and 48 hours, the effect of troxerutin on sensory and motor neurological disorders, cerebral edema, and infarct volume was investigated. Analysis of variance test was performed by SPSS software (21) using one-way and two-way.

The results indicated that troxerutin reduced stroke volume (p=0.05) and cerebral edema (p=0.05) compared with the control group. Troxerutin also improved sensory-motor function (p<0.0001) and balance function and muscle strength (p<0.05)

Treatment with troxerutin can have beneficial effects on complications and disorders caused by cerebral ischemia.

Goal setting is a motivational item that is usually used for enhancing sport skills learning. The aim of the present study was to investigate the effect of easy versus difficult goals on acquisition and retention of basketball free throws in educable children with mental retardation (AWMR). A total of twenty one AWMR educable students (aged between 8 and 13) were assigned to either a difficult or easy goals group. Participants exercised the task for nine sessions across acquisition phase. Both groups performed a pretest before the acquisition sessions. Acquisition tests were taken during acquisition phase, and immediate and delayed retention tests were also taken after 2 and 10 days of no practice respectively. We performed statistical analyses with a repeated measures analysis of variance (ANOVA), and an independent t test. Results showed that easy goal setting group significantly improved their performance in acquisition and retention phases (P

Genital tuberculosis (TB) is an important cause of infertility in the developing countries, where hysterosalpingography (HSG) remains an initial diagnostic procedure in the evaluation of tubal and peritoneal factors leading to infertility.

The aim of this study was to determine the HSG findings of genital TB in infertile women.

We retrospectively reviewed HSG findings in 20 women with genital tuberculosis. HSG was performed in these women as part of infertility work up over 5 years. The other diagnostic procedures used included endometrial curettage and biopsy, histological examination, culture, laparoscopy, hysteroscopy and polymerase chain reaction.

The mean age of the participants was 30.5±8 years. All women had clinical history of infertility for at least 4 years. Women presented with pelvic abdominal pain (30-35%) and menstrual disturbances (20-25%). Reviewing 20 cases of female genital TB were encountered various presentations on HSG.

HSG is an invaluable procedure in suggesting the diagnosis of genital TB in patients being investigated for infertility.

The objective of the current article is to identify the relation between manager's capabilities and performance of consumer cooperative in Kerman city. This study was carried out in correlating method and research method was library study and reviewing annual performance and document reports. Statistical population of this studyconsisted of 21 managers of consumer cooperative in Kerman in 2010.Statistical analysis was conducted using SPSS 16 to calculate descriptive statistics, correlation and regression. Based on literature, for performance evaluation, the paper used financial indicators such as ROA, ROE and profit margin. Also manager's capabilities were examined by three variables: education, working experience and education disciplines related to cooperative activity.