جستجوی مقالات مرتبط با کلیدواژه « جاذبه » در نشریات گروه « پزشکی »

Brain drain is a phenomenon that has become more widespread in recent decades. This issue is gradually becoming a crisis in Iran. Considering the importance of maintaining the elites in the country, this study endeavors to offer solutions to manage this crisis.

In this qualitative study, the opinions of experts on the issue of brain darin were received and analyzed using a crowdsourcing system. Coding method, content analysis and Maxqda10.2 qualitative data analysis software were used to analyse data.

Key results were classified into three main categories: causes of brain drain, its consequences and management strategies. Data analysis lead to extraction of three main categories including: 1) causes of elite migration with two subcategories of repulsive factors of origin and gravity of destination countries;  2) consequences of elite migration with 2 subcategories of elite migration threats and elite migration opportunities; and 3) elite migration strategies with six subcategories of accurate problem recognition, reforming the nurturing system and supporting the elites, establishing and strengthening the system of innovation, reforming the administrative system and meritocracy, promoting the status and dignity of human resources,  fulfilment of the obligationof macro-policymakers.

Elites tend to migrate due to repulsion of the country of origin and multiplicity ofattractions in the destination country. Policymakers in various fields are expected to develop clear programs and laws to manage and eliminate retention of elites and strengthen attractions to prevent the brain drain.

The living organisms on the earth are under the influence of natural gravity force and if this gravitational force changes, they will be affected by a unique shock. Weightlessness has important effects on cell function by interfering with biochemical pathways and gene expressions. Study of these changes would be of benefit to astronauts and can improve the quality of human life on earth. In simulated microgravity, the expression of some genes and protein levels produced in cultured cells or laboratory animals have been altered. However, very little information is available on the effects of microgravity on gene expression. Raf kinase inhibitory protein (RKIP) is a regulator of kinase
activity and a cell balancing agent that can act as a metastatic inhibitor in a variety of solid tumors, including breast cancer. In general, the RKIP expression in progressive tumors is reduced but its increased expression can result in reduced invasive potency of cancer cells without affecting primary tumor growth.

In this study, changes of RKIP gene expression were investigated in human MCF-7 breast cancer cells after 24 and 72 hours exposure to microgravity conditions using qReal time PCR method. We used t-test for data analysis and graphpad prism 7 project for plotting graphs.

The results showed that microgravity changed gene expression of RKIP and led to increased expression levels of the gene after 24 hours exposure to microgravity.

By optimizing the duration of microgravity, we can observe significant changes in RKIP gene expression in MCF-7 cell line which can be considered promising for the treatment of cancer.

Marriage and marital life plays a basic role in the elevation and mental health of the humankind, and life satisfaction plays an important part in family’s normal functions. The aim of this study was to investigate the impact of relationship enrichment education on marital satisfaction of primary school female teachers in Birjand. In this quasi-exprimental study (pre-test, post-test, and control group), 80 female teachers working in Birjand primary schools were selected with multi-stage sampling method. Participants were allocated to control (n=40) and experiment (n=40) groups. Education of marital relationship enrichment skills was provided for the experiment group in eight 90-min sessions accompanied by group discussion. Data were collected by the 49-item Marital Satisfaction Questionairre. Data were analyzed in SPSS (version 16) by Independent t test, Paired t test, Kruskal-Wallis, and Mann-Whitney (U) tests at the level of α≤ 0.05. Significant differences were observed in the cases after the intervention concerning marital satisfaction and its components (p=0.001). However, there was no significant difference in the controls after the intervention in terms of marital satisfaction or its components (p>0.05). The relationship enrichment educational program was effective in elevating the marital satisfaction quality and its components (attraction, understanding, attitude, and investment). Therefore, this enrichment program can be used as an effective intervention to increase marital satisfaction.

Objectives This research examined the factors related to marital satisfaction. Method 127 volunteers filling for divorce and 1670 married individuals from normal pop-ulation with no prior history of divorce were studied by Marital Satisfaction Questionnaire which comprises four scales, attractiveness, rapport, attitude, and investment. Findings The study showed that in the divorce group the years of marriage and education, mean age at the time of marriage, and the number of children were less than the other group. In a multivariate analysis, the most significant relationship factors related to marital satisfac-tion included investment, attitude, and rapport. Results Marital satisfaction was greater among those who were older and had higher level of education at the time of marriage. Marital satisfaction is greater among couples who have mutual respect for each other and possess both communication skills and more rapport. Attrac- tiveness alone is less effectual on marital satisfaction than investment, positive attitude, and rapport.