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Lentiviruses are considered one of the most effective recombinant viruses for gene transfer to mammalian cells and tissues. In this study, the potential of HIV-1-based lentiviral vector to deliver transgenes into avian cells was examined. We co-transfected human embryonic kidney cell line HEK-293T with three lentivirus vectors called transfer, packaging and envelope vectors. We collected the supernatant from transfected cells 24 and 48 hours post-transfection and filtered them immediately. Then we subjected the filtered supernatant to Amicon protein columns for concentration purposes. Centrifugation removed a larger part of the supernatant presumably free of viruses and left behind a small volume of darken solution full of virions. We thereby produced a 500-µl-volume of virus stock. Various dilutions of this stock were added to chicken liver cell line LMH. The initial sign of infection appeared within 48 hours and by 96 hours post-infection 100% the LMH cells positively expressed transgenes. Our results indicated that the human HIV-1-based lentivirus vectors are capable of transducing and transferring foreign genes into chicken cells. Given the need for a high-titer virus stock for successful target cell transduction, our results indicate that the filtration method of virus concentration is able to produce high virus titer and is cost-effective and less time consuming than ultracentrifugation or other traditional methods.

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Background: Low back pain is the most common cause of disability and absence from work among young and middle-aged people. As there is limited knowledge regarding this problem among Iranian students, this study aimed to determine the prevalence of low back pain and its ‘related socio demographic factors among students of Islamic Azad University, Tehran, Iran. Material and Methods: This is a cross-sectional study in which 200 students of Islamic Azad University were selected purposively. Demographic questionnaire and Ronald-Morris Disability Scale were used to collect data regarding characteristics and disability caused by back pain. Data were entered SPSS₁₆ and analyzed through descriptive and analytic statistics. Results: In total, 190 students including 78 (41%) men and 112 (59%) women were assessed. Of all studied students 113 individuals 65.9% were suffering from low back pain and 91 students
(47.8%) were suffering from pain related disability. Body mass index (BMI) was normal in most participants. There was significant negative relationship between low back pain and physical activity (P = 0.006). Conclusion: To sum up, the results of this study verified a significant relationship among low back pain and disability. Moreover, the students who were more active and were living in good socio-economic status were less probably to suffer from low back pain and disability.

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Introduction: Quality of life plays a considerable role in individual and social health. Low back pain is the most common musculoskeletal disorders and cause negative impacts on various aspects of life. The aim of study was to compare the quality of life of students with and without low back pain.
Methods and Materials: This was across-sectional study performed among students at the Faculty of Humanities, Islamic Azad University, and west branch in Tehran., Iran. 200 students took part in the study and the SF-36scale was used to assess the quality of life of the participants.
Findings: The mean score of overall quality of life, physical, and mental health of the participants were 67.87 ± 19.07, 72.36 ± 21.53, and 63.20 ± 21.34 respectively. There was a significant relationship between quality of life and socio-economic status (p = 0.007), physical activity (p = 0.002) and smoking (p = 0.007). About %60/3of all participants (N = 114) reported back pain history. There were significant relationship between quality of life and low back pain (p = 0.0001).
Quality of life in students with back pain was less than those without back pain.
Conclusion: Considering the underlying factors affecting the quality of life of students, this study showed low back pain could also diminish the quality of life of the students.

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The word hemmat in Farsi conveys the meaning of will, endeavor, effort and high-mindedness while in the view point of the wise it is one on the spiritual wayfaring level. In other words it is the wings for spiritual flying of the wayfarer to reach to the high end. Hemmat is the factor for working and reaching the God’s benevolences and it also will promote the patience and tolerance against the difficulties. The nature of the wayfarers’ high-mindedness is not only ignoring the worlds but it is the destination of the wayfarers. Although some of the wayfarers may reach the end without making any efforts and only by the God’s mercy but, it is necessity as it directs their willing and promote the accomplishments and confirmations by God and accelerate reaching to the end. High Hemmat is not limited to the affairs within the capability but, it covers the affairs more beyond the capability.       
 

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Background: Back pain is one of difficulties in communities that has negative effect on various aspect of life. The purpose of this study is to assess the aspects of life quality and its relationship with disability due to low back pain among students.
Methods and Material: In this cross-sectional descriptive study, 200 eligible students were enrolled through purposive available sampling. Data was obtained based on demographic data questionnaire, the Roland-Morris Disability Questionnaire and SF-36 inventory. All data were entered into SPSS version 19 and analyzed.
Results: Results of this study showed that 60.3 percent (114 people) of students were living with low back pain. Based on Roland-Morris disability questionnaire, 80 percent (91 people) of those with low back pain were suffered from disability. The chi-square test showed there was a significant relationship between quality of life (QOL) (mental health and social function) and disability due to low back pain,. It also was shown that indirect relationship between all aspects of QOL and disability due to low back pain was existed.
Conclusion: This study indicated low back pain could affect not only on students' physical aspects of quality of life but also psychological and social aspects of quality of life could be decreased. Considering these effects of low back pain among students, multidimensional interventions regarding bio- psychosocial dimensions recommended to improve the quality of life of this target group.

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Since back pain is the most common pregnancy-related symptom, this study aimed to determine the effect of exercise training on disability due to low back pain in pregnant women.
In this interventional study 120 pregnant women referring to the health centers in Karaj, were randomly assigned into two intervention (n = 60) and control (n = 60) groups, respectively. The demographic questions and standardized Quebec questionnaire were used to collect data. Data were analyzed using SPSS software ver. 21 and appropriate statistical tests.
Totally 120 pregnant women (60 participants in each group) took part in this study. There was no significant difference between the two groups in terms of disability due to low back pain before the intervention (P > 05). However, after intervention, the disability score in intervention group was less than the control group significantly (1.4 ± 0.86 in intervention group compared to 2.23 ± 1.12 in control group with P < 0.0001).

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In graded structure aerogels, change of pores diameter through the thickness affects the effective thermal conductivity. As the pores diameter is reversely correlated to the density, the effective thermal conductivity of aerogel is often normalized to the density and it is expressed as the B parameter. Lower values of B would be the optimum conditions for the resulting aerogel. The objective of this work is to simulate the heat transfer of the homogenous structures and to compare it with structures that pore diameter vary through the thickness. For this purpose, the structure characteristics and properties of silica aerogel along with the effect of coupling thermal conductivity have to be taken into consideration. Using the COMSOLMultiphysics®software, the heat transfer was modeled for a number of cases, including homogenous structures with minimum density (L), maximum density (H) and for an optimum structure (OPT) having a minimum value of the B parameter. The results were compared to thestructurally graded aerogels in which the density was varied in two fashions, from higher values to lower (HtL) and from lower to higher values (LtH). The change of temperature with time was tracked for all the cases. Results indicated that the minimum value of heat transfer was obtained for the structurally graded aerogel of the type of LtH (a 2-percent increase of efficiency for LtH when compared to the optimum structure (OPT)). Therefore, this structure introduce as the best candidate for producing a thermal insulator.

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Background: Part of the current issues related to mobility in urban spaces goes back to the definition and measurement of mobility. Mobility is the capacity to be mobile. Regarding that capacity relates to the individual's mind or the built environment, mobility is defined differently.
Objectives: This study aims to review the theories related to mobility and thus provide a theoretical and operational framework for measuring mobility in urban spaces.
Method: In this regard, the Content analysis method has been used to analyze the data in phases of Preparation, Organization, and classification.
Results: The results of content analysis show that these theories can be divided into three categories of subjectivist, environmentalist, and pluralist theories; Subjective theories focus on the mental nature of mobility and regard mobility as a function of individuals' habits, attitudes, motivations, and norms; In contrast, environmentalist theories pay special attention to the impact of environmental factors such as density, land use mix, and accessibility on the mobility of individuals. Pluralist theories consider citizens' differences according to their personal characteristics and situation, and therefore consider diversity and difference effective in mobility and involve them in the evaluation and measurement process.
Conclusion: The study of the factors affecting mobility shows that mobility is a complex and multilevel concept that is influenced by many factors; therefore, if urban planners want to improve the urban mobility system, they must pay special attention to the role of all these factors and the relationships between them.

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Aim: Identification of contributory factors in smoking and gaining insight into the roles played by each of these factors including health literacy (HL) may account for quitting or decreasing the prevalence of smoking. The aim of the current study was to identify the effects caused by different HL levels on smoking.
Methods: 347 students inhabiting the dormitories of Shahid Beheshti University of Medical Sciences were included in a cross-sectional correlational study. Random cluster sampling was used for the selection of participants. HELIA questionnaire (used for HL measurement in Iranian urban population between 18-65 years of age) and a researcher-made questionnaire (for determining the status of smoking in individuals) were used to collect information from the participants. All data were statistically analyzed by SPSS software.
Findings: The mean and standard deviation of HL score was 70.52±14.12 out of 100. The results indicated that among the university students, 59.7% (201 people) were non-smokers, 23.1% (78 people) were smokers, and 17.2% (58 people) had experienced smoking. These findings reveal that HL is significantly correlated with smoking in university students. Also different levels (insufficient, relatively sufficient, and sufficient) of HL show its significant correlation with smoking, meaning that less HL levels are accompanied by a higher chance of smoking.
Conclusion: The relatively high prevalence of smoking in university students and the impact of HL on smoking highlight the need to increase the level of HL in university students and develop an efficient tool for measuring smoking literacy in all age groups.

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[1] The effect of education based on health belief model on the improvement of osteoporosis preventive nutritional behaviors of second grade middle school girls in Isfahan [2] The impact of an educational intervention on nutritional preventive behaviors in osteoporosis among adolescent girls [3] Prevalence of osteoporosis and its related factors in women referred to Fasa’s densitometry center [4] Evaluation of health literacy of pregnant women in urban health centers of Shahid Beheshti Medical University [5] Health literacy and preventive behaviors [6] Relationship between health literacy and female cancers preventive behaviors [7] The relationship of health literacy with health status, preventive behaviors and health services utilization in Baluchistan, Iran [8] Associations between health literacy and preventive health behaviors among older adults: Findings from the health and retirement study [9] Relationship between health literacy, health status, and healthy behaviors among older adults in Isfahan, Iran [10] The relationship between media literacy and health literacy among pregnant women in health centers of Isfahan [11] Health literacy and women’s health: Challenges and opportunities [12] The relationship between health literacy and self-efficacy physical activity in postpartum women 

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Aim: Smoking is one of the most important causes of respiratory, cardiovascular and cancers diseases. This study examined the smoking-related knowledge, attitudes and practices of dormitory students of Shahid Beheshti University of Medical Sciences in Tehran. The specific aim is to determine the correlation between the main variables' affect on smoking habits, knowledge and attitudes.
Methods: In this cross-sectional study conducted with descriptive and analytical approach, 340 students were selected through random cluster sampling. The participating students completed an interview measuring demographic characteristics and smoking-related knowledge, attitude and practice. Data were analyzed using Chi-square and Pearson's tests in SPSS (ver. 21).
Findings: The mean and SD of the participants was 22.93±4.05 years. Accordingly, 23% (n=78) of the subjects were current smokers and 17.1% (n=58) had experienced smoking. The knowledge of 1.8% (n=6) of the subjects was weak about smoking's health effects, 9.97% (n=332) had average and 0.3% (n=1) had good knowledge. Attitude of 8.6% (n=29) of the participants about smoking was poor, 29.5% (n=100) average and 61.9% (n=210) good. Relationship between knowledge and attitude about the harms of smoking (r=0.35, p<0.001), between knowledge and smoking (r=0.2, p<0.001), and between attitude and smoking (r=0.45, p<0.001) was significant.
Conclusion: There was a moderate level of knowledge and attitude about smoking hazards among the participants. Also the prevalence of smoking was relatively high. With regard to the statistically significant relationship between knowledge and attitude with smoking, declared health educational programs may enrich current knowledge, and promote the attitudes related to smoking risk and effects on the students' health.

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Aim: The most important factor underlying the mortality of patients with diabetes is the lack of self-care. This study aimed to determine the effect of education via mobile text messaging on the self-care of patients with type 2 diabetes.
Methods: This semi-experimental controlled study was carried out on 74 patients with diabetes in Chabahar, Iran. They were selected using convenience sampling in the health care centers, and were randomized into two control and intervention groups of 37 subjects each. The tools to collect data were questionnaires containing demographic profiles and self-care questionnaire. For each group, the questionnaires were completed, and educational SMS (short message service) was sent to the intervention group for four weeks. The post-test questionnaire was completed by both groups two months after educational intervention. Data were analyzed using SPSS16 and appropriate statistical tests.
Findings: Before the intervention, the mean scores of all self-care dimensions between the two groups did not differ significantly but after that, the mean of total scores of self-care and some of its dimensions (adherence to diet, blood glucose self-monitoring and foot care) were positive, and significantly increased in the intervention group versus the control group regularly after intervention were not different significantly between the two groups (P>0.05).
Conclusion: Considering the effectiveness of sending SMS educational method (SSEM) in improving the self-care of patients, it is necessary to further consider and use this method.

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Aim: Currently, the issue of adolescents’ health literacy is particularly important because it is an essential component in improving their quality of life. Due to the lack of enormous studies on this issue, this study aimed to determine the level of health literacy and factors influencing it among high school students in Tehran, Iran.
Methods: This research is a cross-sectional and descriptive-analytic study, which was conducted on 400 male and female students studying in the second period of high school, who were selected using multi-stage random sampling. Data were collected through a questionnaire, which included personal characteristics, and the questionnaire of HELMA (Health Literacy Measure for Adolescents). The obtained data were analyzed using SPSS 20 and descriptive statistics as well as t-test and ANOVA tests.
Findings: The mean age of students was 17.01±0.87 years. 50% (n=200) of the participants were female, 50.5% (n=202) were from the North part of Tehran, and 34.5% (n=138) were in the third grade. 37.5% (n=150) had inadequate health literacy, 37% (n=148) relatively adequate health literacy, 22.5% (n=90) adequate health literacy, and 3% (n=12) excellent health literacy. Health literacy was correlated significantly with the level of education, parents’ education, source of information, the assessment of health status and interest in the issues of health (p<0.05).
Conclusion: The results indicated that most of the students had limited health literacy. Due to the role of health literacy in promoting the adolescence quality of life, it is necessary to pay more attention to promote health literacy and gain sufficient skills in order to make health information be practical and working.

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The occurrence of dust storms and their sources in the southern and central parts of Iran during the period of 2002 to 2009 was investigated. For this purpose, the meteorological and synoptic data, data from the middle and upper atmosphere, and wind flow tracking model were used. Dust storms and NDDI were traced using satellite imagery from Fasa, Shiraz, and Bushehr stations. Analysis of the ground data indicated that one of the strongest storms occurred in 2008 and the most intense dusty day was June 10, 2008. The results of tracing wind flow in the fiercest dusty day using HYSPLIT model indicated that dust masses originated from the western parts of Iraq and eastern Syria and transported by the northwest winds in the region. The results indicated that west winds are caused by the presence of the low pressure air mass in the center of Iran and the high pressure air mass in the northeast of Africa. It is concluded that terrestrial measurements, weather patterns, tracing wind flow model and NDDI index have suitable capability to detect the movement of dust storms.

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Background: Parties are so important in contemporary political systems that there seems to be no alternative mechanism; they facilitate governance at three levels: micro, medium and macro. Political parties need financial resources to win political competition and seize power, and this is what drives the political party financing system from a public law perspective. Governments always intervene in the financing of political parties through regulatory and distributional policies. Method: The research method used in this article was documentary-library method. Findings: The findings of this study show that one of the most important reasons for the failure of political parties in Iran is the unresolved issue of the legal system of securing parties; however, regulatory and distributive policies have been adopted to improve the performance of political parties, such as the announcement of "general election policies" by the leadership and the adoption of a law on the functioning of political parties and groups; But the issue of monitoring the financing of parties still needs to be legislated. Conclusion: In order to oversee the financing system of political parties, a new body called the "Election and Parties Commission" should be established and this body should be responsible for this oversight. The novelty of this article is to raise the issue of the party financing system from the perspective of public law and to provide a solution to solve this issue.

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In recent existing environment one of the major challenges that planners and managers are grappling with is customer recognition, and distinguishing between different groups of customers in the field of banking services. It is obvious that using an appropriate model gives the bank the opportunity to fit valuable suggestions along with demands for targeted sectors and provides design and thus improves bank performance from different perspectives. The aim of this study is using and appropriate model for clustering customers based on indexes including novelty, number of transaction and financial factors. In this paper, for clustering data, the genetic algorithm combining with fuzzy C-means is used to overcome problems such as being sensitive to the initial value and getting trapped in the local optimum. The simple random sampling method is used to obtain the sample. The findings show that the first cluster of customers due to its high performance in "novelty", "number of transaction" and "financial factors" index are loyal customers and the second cluster of customers because of low performance in "novelty" index, mean performance in "number of transaction" index and high performance in "financial factors" are among those customers who are turning away from bank.

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Problem: The historical areas and centers of the city of Tabriz contain precious treasures of human historical and cultural works. In order to prevent the reduction of the importance of these historical centers, it is necessary to implement regeneration plans. that the implementation of tourism projects can lead to the re-prosperity of the eight city of Tabriz.
Aim: Promote the tourism development of urban historical-cultural places by recreating the historical-cultural contexts of zone 8 of Tabriz city.
Methods: The current research method is descriptive-analytical, and library studies and a researcher-made questionnaire were used to collect data. The statistical population of the research includes the entire population of the eight zone Tabriz, and based on the Cochran formula, the sample size was 375 people. Exploratory factor analysis methods along with multivariate regression method were used for data analysis.
Findings: Based on the results of the research, four basic factors were discovered and the results showed that all regeneration factors involved in the development of tourism have significant relationship with the promotion of tourism in the historical-cultural places of Tabriz, and according to the socio-cultural factors (0.612), Physical factor with (0.507) and architectural quality index with (0.462), economic factor with (0.325) and environmental factor with (0.296) have the most to least effect in promoting tourism development. 
Conclusion: As a historical context with an approach to urban tourism in historical-cultural places, the eight zone has opportunities and strengths that can help to create lively spaces and tourist-friendly places by relying on them.

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