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Objective(s): Genital warts, in addition to being important as a sexually transmitted disease, can alter the emotional support of affected women and threaten couples' emotional relationships. This study was designed with a qualitative approach to investigate the challenges of emotional support for women with genital warts. Methods: The present qualitative study was performed from January 2019 to February 2020 in the dermatology clinic of Razi Hospital in Tehran, Iran, with purposive sampling of 16 women with genital warts. Data were collected through unstructured interviews and analyzed using conventional content analysis approach. Results: After data analysis, a total of 182 codes, 8 subcategories, 3 main categories and 1 theme were obtained. The theme namely "Emotional Support Challenges" included the three main categories of "emotional relationship change", "disclosing the disease to seek support" and "worry for labeling and judgment". Conclusion: The results of the present study showed the challenges of emotional support for women after contracting genital warts. After contracting genital warts, women experienced emotional deterioration. However, receiving emotional support from family members or friends instead of their partner accompanied by the worry of being judged and stigmatization.

The credit cycles have a major effect on the behavior of economic enterprises during periods of boom and recession. The change in the behavior of economic enterprises leads to its contagion to real and nominal sectors in the economy. On the other hand, the currency crises have influenced the investment decisions of various economic sectors. The purpose of this paper was to examine the relationship between credit cycles and currency crises in Iran. In this study, the variable coefficients approach was used over time for the period of 1991-2020. In this regard, credit cycles and currency crises have been used by the Christiano-Filtzgerald filter and the adjusted index of currency crises. The results showed that there has been a coincidence between credit cycles and currency crises in the country. Also, the results showed that the currency crisis had a negative effect on the GDP and economic growth in the country. In addition, it was observed that credit cycles have led to economic growth during boom times and decreased economic growth during recessions.

One of the most important goals of economic policymakers in every country is to achieve high economic growth. For this purpose, this study aims to identify the most important variables affecting Iran's economic growth in the period of 1981 - 2021 using the dynamic averaging model. The results showed that in Iran's economy, the variables of current government expenditures, tax revenues, income inequality, household consumption expenditures, and domestic investment are the most important variables affecting economic growth. Also, the results showed that the manner and probability of these variables influencing economic growth over time are not constant and are subject to exogenous impulses such as revolution, war, oil price shocks, applied economic policies, structural changes, and sanctions. The results showed that in Iran's economy, the variables of current government expenditures, tax revenues, income inequality, household consumption expenditures, and domestic investment are the most important variables affecting economic growth respectively.

Background: Patients who have recovered from COVID-19 suffer from lasting symptoms such as numerous physical and mental disorders. It seems that these conditions can disturb the activities of daily living. Therefore, the aim of this study was to compare fatigue, quality of life and pulmonary function in recovered COVID-19 patients and healthy individuals. Materials and Methods: This experimental study was conducted on 25 recovered COVID-19 patients, discharged from Qom hospitals, Iran, in 2022, and 25 healthy people. The inclusion criteria for healthy people were a negative PCR test result and the age range of 35 to 59 years, and for recovered COVID-19 patients were at least one week of hospitalization due to COVID-19. Fatigue severity was assessed using the Fatigue Severity Questionnaire (FSS), quality of life through 36-question questionnaire (Sf-36) and pulmonary function through spirometry. The comparison of the mean data of the two groups was done using Mann-Whitney U test and independent t-test by SPSS-27 software. Results: Factors including fatigue (P0.001), physical health (P

AbstractIntroduction: Ilmenite is considered the most important source of titanium and its oxide and is usually processed by sulfate, chloride, and smelting processes. In all these processes, incomplete removal of iron combined with titanium is the main problem. In order to improve iron removal, pre-processing of ilmenite by carbothermic reduction processes is a solution used in the industry. Considering the technical and environmental problems of carbothermic, replacing coke by hydrogen, is a new method that brings significant advantages in the subsequent separation processes.Methods: In this research, Kahnuj ilmenite concentrate is first characterized through physical, chemical, and structural analysis techniques. Gas reduction of the ilmenite pellets using pure hydrogen gas was performed, and then reduction products subjected to further characterization. The reduction degree was calculated based on the weight loss after the reduction process. Samples were characterized using optical microscopy, electron microscopy, X-ray diffraction analysis, and energy-dispersive X-ray spectroscopy.Findings: The Kahnuj ilmenite concentrate is composed of the FeTiO3 as the main phase, hematite, and a partial sphene phase within the ilmenite grains. Mn and Mg found in the chemical analysis of the concentrate led to incomplete separation of iron oxides in ilmenite.In this research, a maximum reduction degree of 76% is achievable at a reduction temperature of 1100 °C. With an increase in the reduction temperature, metallic iron diffused out the ilmenite structure and accumulated around the particles. With an increase in the reduction time, the aggregation of the pseudobrookite phase, occurred in the center of the ilmenite particles.

This study aims to investigate the relationship between currency crises and fluctuations in banking credits in Iran. Utilizing a time-varying coefficients approach spanning from 1989 to 2022, alongside economic boom and recession indicators, the analysis assesses the impact of currency crisis occurrences on banking credit cycles. The currency crisis index, based on a dummy variable, and the credit cycle index, derived from banking credit booms and busts, are examined alongside the economic cycle, gauged by production fluctuations using intermediate filters. Findings suggest that currency crises influence the occurrence of credit cycles and production facility cycles, while shocks stemming from economic cycles exacerbate currency crises and credit cycles within the banking system. Given the bidirectional relationship observed between the currency crisis index and credit cycles, policymakers are advised to exercise caution in implementing drastic measures during economic fluctuations and credit cycles. Prudent management of currency markets can mitigate the adverse effects of currency crises on economic variables. Introduction Financial crises have profound and far-reaching implications, encompassing economic, political, and social spheres. They exact a heavy toll on society, manifesting in reduced welfare, heightened unemployment, and diminished public trust. Given their extensive repercussions across various sectors, financial crises have garnered considerable attention from economic policymakers. Among the diverse forms they take, currency crises stand out as particularly significant. These crises, marked by sudden depreciation or robust intervention by monetary authorities to bolster national currency values through foreign exchange reserve sales, exert widespread influence across the economy. They precipitate pressures on consumers, producers, and central banks, disrupting market dynamics for other assets and impinging on monetary policy frameworks. Moreover, they adversely impact credit allocation within the banking system, underscoring their multifaceted ramifications. The main question investigated in this article pertains to the interplay between currency crises and credit cycles during the economic upswings and downturns in Iran. Given the nuanced nature of credit cycle delineation, coupled with the fluctuating dynamics of economic expansions and contractions, the vector autoregression (VAR) approach with time-varying coefficients has been employed to examine the evolving dynamics of this relationship spanning the period from 1989 to 2022. This methodological choice is motivated by its ability to yield more realistic findings, accounting for the temporal variability of coefficients and the dynamic interrelationships among variables. This contrasts with traditional time series models and conventional VAR frameworks, thereby enabling the formulation of more informed policy recommendations. Methods and Material In this study, credit cycles and currency crises spanning the period from 1989 to 2022 were extracted using the Cristiano and Fitzgerald filters. The relationship between these components and economic expansions and contractions was then explored. Additionally, the dynamic interplay among these variables was assessed using the vector autoregression method with time-varying coefficients (TVP-VAR). The study incorporates four primary variables: the currency crisis index, credit cycle, economic boom and recession periods, and liquidity growth. To compute the currency crisis index, a virtual variable was employed. The data utilized in this research were sourced from the Central Bank's database and statistical quarterly reports. Results and Discussion The findings from the TVP-VAR model reveal several significant dynamics. Initially, in response to a shock from the credit cycle, liquidity growth displays a positive reaction, with the impact dissipating over the long term. Conversely, the currency crisis initially reacts negatively to the credit cycle shock but eventually exhibits a positive response, indicating that the creation of the credit cycle contributes to the occurrence of currency crises. The economic cycle, when shocked by the credit cycle, responds negatively. On the other hand, when the credit cycle is shocked by the currency crisis, it initially reacts positively, followed by a subsequent negative reaction, with the long-term effect dissipating. Liquidity growth, in response to the currency crisis shock, demonstrates a positive reaction. Regarding the economic cycle, its response to the currency crisis shock is initially negative, then positive, and eventually negative again, suggesting that currency crises give rise to periods of economic expansion and contraction. In another aspect, the shock from the credit cycle prompts a positive reaction in liquidity growth, while the currency crisis variable responds negatively to the credit cycle shock. Initially, the credit cycle variable reacts positively to the credit cycle shock, but over time, it turns negative, with the impact fading in the long run. Finally, in response to the shock of liquidity growth, the currency crisis variable shows a positive reaction, the economic cycle reacts positively, and the credit cycle also responds positively, with the effect of the shock diminishing over time.. Figure 1. IRF diagram in TVP-VAR model format Conclusion The findings from this study highlight the adverse impact of currency crises on the economic cycle, leading to periods of recession. Conversely, economic downturns can exacerbate currency crises. Based on these results, it is advisable for monetary authorities and central banks to refrain from implementing contractionary policies, particularly in foreign exchange policies and credit restrictions, during economic downturns. Instead, they should expedite the process of foreign exchange allocation to economic enterprises for purchasing production inputs, thereby fostering an environment conducive to improving production and stimulating economic growth. Furthermore, during credit crises, commercial banks are encouraged to increase credit limits for commercial enterprises and streamline the loan repayment process in the micro-finance sector. These measures aim to prevent the economy from slipping into recession and promote sustainable economic development.

Evaporation is one of the most significant losses from water levels, especially in desert areas. Because a large amount of water is stored in reservoirs, water losses evaporate from the surface of water reservoirs, which is one of the sources of water loss. So far, various solutions have been proposed to reduce the rate of evaporation. In the present study, which was conducted with the aim of reducing the rate of evaporation from Class A evaporation pans, it was attempted to investigate for the first time the efficiency of three types of balls as evaporation reducing coatings. The balls used, including three types of two-hole and six-hole balls and without holes with a diameter of 7 cm, made of propylene were used. In order to evaluate the performance of these coatings in reducing the evaporation of Class A pans for 2 months from 1400/6/1 to 1400/7/30. Based on the Tukey and Duncan mean test, the three ball samples had a significant difference of 5% in terms of changes in evaporation rate and temperature with the control. The results showed that holes without holes with 70.6% efficiency had the largest share in reducing evaporation, while two-hole and six-hole balls with 45 and 30% efficiency were in the next priorities. Finally, holes without apertures were identified as

Banks and the volume of their financial transactions have a positive effect on the income of companies and the country's economy, and paying attention to their stability conditions can lead to a stability economy. Considering the importance of bankruptcy and banking crises, the main purpose of this study is to investigate the effects of liquidity and credit risk on Iran's banking stability using the z-score index. In this regard, financial information of 15 selected banks listed on the stock exchange during the period 2012-2020 has been collected. In order to achieve the research hypotheses and test them, the combined data approach and, the panel smooth transition regression method have been used. The findings of this study show that liquidity and credit risk have significantly increased bank stability first and then decreased banking stability by passing the first regime and entering the second regime, but in general, the effects of these two risks on Banking stability have been declining and significant. According to the research results, managers and owners of banks are advised to be more careful and sensitive in providing facilities to customers. Because granting more facilities increases liquidity risk; Failure to return the facility on time also increases credit risk and consequently causes bank instability.

The shock of oil revenues, through changes in household expectations, leads to different effects on consumer spending in the durable and non-durable goods sector. Accordingly, the purpose of this article was to investigate the impact of oil revenues on private consumption expenditures of durable and non-durable goods in Iran. To test this relationship, two linear and nonlinear models in the period 1978-2020 were used. The model used in this study was of ARDL and NARDL methods. The results obtained in the estimated linear model showed that the intensity of the effect of disposable income on the consumption expenditure of durable and non-durable goods was equal to 0.61 and 0.68, respectively. Also, the effect of oil revenues on consumption expenditures of durable and non-durable goods in the nonlinear model was equal to 0.68 and 0.53, respectively. Moreover, the results obtained from the analysis of positive and negative shocks showed that the effect of positive shock of oil revenues on the consumption of durable and non-durable goods is 0.47 and 0.21, respectively, and the effect of negative shock of oil revenues on the consumption of goods Durable and non-durable were -0.35 and -0.14, in turn.

Appropriate distribution of income and reduction of inequality are one of the government’s goals. Different policies and tools are used to achieve this and the minimum wage is one of them. In this study, the effects of minimum wages on income distribution, due to the most similarities in development and per capita income were studied in 7 selected developing countries including (Pakistan, Armenia, Iran, Belarus, Chile, Egypt, Georgia) and 7 selected developed/development countries including (USA, France, Japan, Sweden, Netherlands, Belgium, and Canada) with generalized minimum squares from the years 2000 to 2020. The results show that, in developing and developed countries, an increase in the minimum wage, improves income distribution and the effects of this policy in developed countries are much greater than in developing countries. Therefore, developing and developed countries should increase the minimum wage in proportion to the rate of inflation to progress and improve income distribution.Appropriate distribution of income and reduction of inequality are one of the government’s goals. Different policies and tools are used to achieve this and the minimum wage is one of them. In this study, the effects of minimum wages on income distribution, due to the most similarities in development and per capita income were studied in 7 selected developing countries including (Pakistan, Armenia, Iran, Belarus, Chile, Egypt, Georgia) and 7 selected developed/development countries including (USA, France, Japan, Sweden, Netherlands, Belgium, and Canada) with generalized minimum squares from the years 2000 to 2020. The results show that, in developing and developed countries, an increase in the minimum wage, improves income distribution and the effects of this policy in developed countries are much greater than in developing countries. Therefore, developing and developed countries should increase the minimum wage in proportion to the rate of inflation to progress and improve income distribution.

Although economic growth and development in different countries has increased economic prosperity, but also environmental pollution threatens human life. The purpose of this study is to investigate the factors affecting air pollution by emphasizing the emission of carbon dioxide in among the countries of the ECO region from 2000 to 2018 with an emphasis on financial development. To investigate the effect of financial development on environmental pollution, the Panel Data econometric method has been used and the model coefficients have been estimated with Eviews 10 software. The dependent variable of the research is the amount of carbon dioxide emissions in terms of tons per year and the independent variable is the combined index of financial development. Two control variables including GDP and energy consumption are also included in the model. In the long run, the effect of financial development on carbon dioxide emissions in the ECO countries is positive and significant. Also, the effects of GDP and energy consumption on carbon dioxide emissions are positive and significant. The coefficient of determination of the model is equal to 98%, which indicates the high descriptive power of the model. Although increasing the level of economic activity increases welfare in different societies, but given that increasing the level of economic activity, especially industrial activity, increases the emission of carbon dioxide and biodegradation. یEnvironment in ECO member countries, economic policy makers of these countries should work together to implement the necessary policies and strategies to control and reduce emissions of carbon dioxide and other environmental pollutants.

Widely interpreted through different architectural discourses, form has emerged as a dynamic and slippery concept. Aiming at a rethinking of the concept in contemporary architectural discourse, the present paper explains theoretical bases and conceptual framework of considering form as an affordance. In order to do so, the paper starts with exploring some transforming influences on the contemporary concept of form, and moves on to introduce affordance as an interpretation of form corresponding the above influences. It then expands on the concept of affordance in order to explain some conceptual evolutions of its presence in the architectural discourse.The paper ascertains a key role for the concept of meaning in rethinking form, and that with the introduction of affordance in architecture’s conceptual constellation comes a clarification of the meaning, providing responses to two key problems of meaning, namely, interactions between the subject and the object, and having a holistic view. This will result in a new understanding of the physical and the functional, aspect of architecture making way to go beyond their perceived schism. It is owing to drawing up new concepts of affordance, and the arousal of new concerns and considerations in architectural thought. Attempts are made here, therefore, to introduce concepts of action field, affordance layers, affordance domain, affordance quality, and affordance polarity, each reflecting the recent developments in architectural thought encountering the concept of affordance.

Cooperatives are the best organizations that have succeeded in mobilizing dispersed yet talented and motivated forces. Of course, this is possible due to the success of cooperatives. Therefore, identifying the factors that promote and hinder the success of cooperatives is of great importance. Considering that no study has been conducted in this regard in Savojbolagh County, thus this study seeks to investigate the promoter and preventive factors on the success of agricultural cooperatives in Savojbolagh County. The present study is exploratory in terms of purpose and applied in terms of research results. The statistical population of the study is the members and managers of agricultural cooperatives of Savojbolagh County and also experts in the field of cooperation in Alborz province and Savojbolagh County, which was considered as a statistical sample through Morgan table of 250 people. The validity and reliability of the questionnaire were confirmed using the views of the professors of the Faculty of Economics and Development, University of Tehran and a group of experts in the field of cooperation in Alborz province and Savojbolagh County and Cronbach's alpha coefficient. Using exploratory factor analysis technique, the promoter factors of agricultural cooperatives were classified into six factors (social, individual, economic, educational, legal and environmental) which in total (78.9%) explained the total variance of success factors. Also, preventive factors were divided into five factors including managerial-educational, economic, social, legal and environmental factors, which in total (61.63%) of the total variance of factors inhibiting the success of cooperatives explained.

This study was conducted to analyze the productivity of fishing cooperatives in Guilan province. In this research, the method of partial productivity analysis and total factors productivity and Tornqvist index was used and the data of this research were collected using a questionnaire from the level of fishing cooperatives for the fishing season of 2017. The results showed that in terms of partial productivity, on average, in all cooperatives, Astara county is in the lowest situation and Rasht county is in the highest position. In terms of total factor productivity, the highest rank is related to Rasht county with an average index of 1.511 and the lowest rank is related to Astara county with an average index of 0.133. In the whole province, 22 cooperatives equivalent to 44% of the cooperatives had total productivity of more than one, and 28 cooperatives equivalent to 56% of the cooperatives had total productivity of less than one. According to the findings, it is suggested that cost management be given more importance than increasing fishing and increasing revenue, and considering that Rasht cooperatives were superior to other parts of the province in terms of productivity, it seems that the centrality of this region and accessing more facilities to be effective in this issue. Therefore, it is suggested that more support be given to cooperatives in other cities to increase the possibility of productivity growth in them.

Aim and Background: Covid-19 as a stressor causes several psychological disorders and physical problems around the world, but some people experience post-traumatic growth despite these problems. The aim of this study was to explain post-traumatic growth coping styles based on the experiences of patients with Covid-19. Methods and Materials: Qualitative research design was done by thematic analysis method. Twenty-five participants were selected using purposive sampling and interviewed using semi-structured and in-depth interviews. Purposeful sampling was used to achieve data saturation. Data were analyzed according to the step-by-step process of Brown and Clark content analysis using MAXQDA software. Findings: Data analysis resulted in 96 primary codes, 31 basic themes, and 13 organizing themes. The most important coping styles of patients growing from Corona were: deep thinking style, prayer style, trusting style, hopeful style, modeling style, normalization style, acceptance style, Problem solving style, Meaningful style, Conscious procrastination style, Emotional outburst style, Humorous style, and Supportive style. Finally, the validity and reliability of the identified styles were confirmed using Lincoln and Gaba methods along with four indicators of credibility, conformability, dependability and transformability. Conclusions: grown individuals have a wide range of coping styles that they use to cope with the stress of Covid-19 disease. The results of this study can significantly help to design the scale of assessment, educational and therapeutic interventions of coping styles that facilitate post-traumatic growth in Covid-19 patients.

Background and Objectives: Coronavirus disease 2019 (Covid-19) Acute Respiratory Syndrome has spread around the world. Various persistent complications and symptoms, including various physical and mental disorders, have been observed in recovered and discharged patients. The purpose of this review article was to study the persistent symptoms in patients recovering from Covid-19 and the importance of rehabilitation in the post-acute phase. Methods: In this review study, related articles from databases including Google Scholar, PubMed, Medline, ScienceDirect, SID, Inlm, Web of Science, Scopus, Springer from 2019 to August 2021, were reviewed. The following keywords were also used in the article search process: Covid-19 (and similar) recovered, survivors, discharged, Persistent symptoms, consequences and post-acute. Results: A search of articles in databases identified 10,227 articles. After removing duplicate articles, articles in non-Persian and English languages, non-research articles and non- related articles, 61 articles were obtained that examined the persistent symptoms of recovered and discharged patients. The most persistent symptoms included dyspnea, fatigue and acquired weakness, psychological problems, and decreased quality of life. Conclusion: The results showed that due to the persistent symptoms and clinical condition of Covid-19 disease, motor and pulmonary rehabilitation is necessary for the recovering. These programs should be continued in specialized departments or through home rehabilitation with the aim of regaining motor skills and improving mental health.

This study evaluated the supply of fish in Golestan province by designing a questionnaire. For data analysis, Friedman, Kruskal Wallis, and Mann Whitney u test were used. The results showed that the per capita consumption of fish sellers was 62 kg. The total area of fish shops was 1431 square meters, and 225 people directly worked there. 44.4% of the total fish sales were retail sales. About 89% of fish was supplied by brokers through two types of supply chains for farmed fish and one chain for marine fish, each with 3 brokers levels. The average daily sales of any fish shop are between 45 and 530 kg. About 56% of the province's fish are exported, and 16.6% of marine fish and 34.4% of farmed fish are provided from outside the province. The sellers under the age of 35 believed that advertising is the main factor in selling the fish. sellers with high school diplomas or lower education believed that fish quality and freshness are the main effective factors in sales, but sellers with education higher than high school diplomas believed the factors i.e., the amount of fish waste, promotion and fish size in sales. Sellers with more than 16 years of sales experience considered fish size as an important factor in sales. Therefore, in addition to optimizing the market facilities due to the export of fish to other provinces, it is necessary to pay attention to the needs and priorities of the province's residents according to the findings of Golestan fish sellers.

Background and Objectives: Pulmonary consequences of exposure to low concentrations of ammonia have been less studied. The purpose of this study was to model the pulmonary consequences of exposure to low concentrations of ammonia. Methods: This historical cohort study was conducted in the fertilizer industries in 2019. The participants were divided into two groups of exposed (n=98) and non-exposed (n=105). The exposure level, pulmonary symptoms, and pulmonary function parameters were assessed using the NMAM 6016 and American Thoracic Society and European Respiratory society (ATS&ERS) protocols. Data analysis was performed using the IBM SPSS v. 22.0, and multivariate linear and logistic regression models. Results: The ammonia exposure level was 4.80±1.54 ppm in the exposed group. There was no significant difference in most of the individual variables between the two groups (P>0.05). The frequency of all pulmonary symptoms was significantly higher in the exposed group compared to the non-exposed group (P

The purpose of this study was to investigate the effect of banking system risks on bank performance and macroeconomic variables. For this purpose, credit, liquidity, market and operational risks were used as the most important risks of the banking system. In order to analyze the results, the dynamic stochastic general equilibrium method was used in terms of the structure of the banking system in the period 1991-2020 based on the frequency of quarterly data. In the statistical analysis section, the effect of shock from each of the mentioned risks on banking and macroeconomic variables was compared and evaluated. The results showed that most macroeconomic and banking variables showed the most reaction to market and credit risk and had the least reaction to operational and liquidity risks.

Abstract Introduction: In this research, NiAl-TiC-TiB2 composites with different contents of TiC-TiB2 were produced via the self-propagating high-temperature synthesis (SHS) process using the exothermic reactions in compressed mixtures of Ni, Al, Ti, and B4C. Methods: The synthesis of composites was performed using induction assisted heating, and the formation of phases and the morphology of reinforcing particles were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques, respectively. Findings: Results indicate that the TiC-TiB2 ceramic phases were successfully synthesized and dispersed throughout a NiAl matrix. By increasing the TiC-TiB2 content, the porosity in the structure gets a rising trend due to the enhancement of reaction kinetics and intensity of the reaction, and reaches from 24 Vol.% in the sample without reinforcement phases to 39% in the sample with 15% of ceramic reinforcements. Evaluation of mechanical and tribological properties of the fabricated ceramic samples shows that - although the addition of TiC-TiB2 increases the volume fraction of voids which cause destructive effects - a desirable distribution of ceramic particles within the NiAl matrix leads to improved properties for the composite. The distribution of TiC-TiB2 particles throughout the matrix results in a remarkable decrease in sample weight loss in the pin-on-disk wear test. Also, the microhardness mean values increase from 497 HV for the unreinforced NiAl sample to values up to 1015 HV for the composite sample containing 15% of reinforcing particles.

One of the most important effective parameters in earthquake, is behavior factor, which is depends on various factors such as structural geometric properties, structure ductility (performance level), fundamental period of the structure, damping, soil properties, earthquake characteristics (near- or far- field) and effect of higher modes. The most important feature of the behavior factor is that it allows the structural designer, to be able to evaluate the structural seismic demand, using an elastic analysis, based on force-based principles quickly. In seismic codes such as the Standard 2800, this coefficient is merely dependent on the type of lateral resistance system and is introduced with a fixed number. However, there is a relationship between the behavior factor, ductility (performance level), structural geometric properties, and type of earthquake (near fault and far fault). The purpose of this paper is to establish an accurate intelligent model related to the geometrical characteristics of the structure, performance level and the behavior factor in eccentrically steel frames, under earthquakes near-fault. For this purpose, genetic algorithm is used. Initially a wide database consisting of 12960 data with 3-, 6-, 9-, 12-, 15- and 20- stories, 3 column stiffness types, and 3 brace slenderness types were designed, and analyzed under 20 pulse-type near-fault earthquakes for 4 different performance levels. To generate the proposed model, 6769 training data were used in the form of adaptive-neural fuzzy inference system (ANFIS). Subtractive clustering and Fuzzy C-Mean clustering (FCM) methods have been used to generate the purposed model. The results showed that Fuzzy C-Mean clustering provides more accurate results than the other fuzzy inference system (FIS). To validate the proposed model, 2257 test data were used to calculate the mean squared error of the model. The results of correlation analysis of the proposed model show that the proposed intelligent model has high accuracy.

Objective: Conditional valuation method is one of the methods of estimating the willingness to pay and is a cost-benefit analysis. The aim of the present study was to estimate the average willingness of individuals to pay for the Covid-19 vaccine with a one-year and long-term protection period and to assess its contributing factors. Methods: The present study was a descriptive research. The required data were collected from 370 two-dimensional online questionnaires at the end of November 2020 from Iranians. Conditional valuation method and logit model were used to estimate peoples’ willingness to pay. Results: The results showed that 65.67 percent of people are willing to pay for the vaccine. The household income, age, history of having chronic disease, history of Covid-19, attitude, recommended amount and having an elderly person in the family had a positive and significant effect on long-term vaccination and age, household income, history of having chronic disease, attitude and the amount offered had a positive and significant effect on annual vaccination. Also, the average willingness to pay was 3,750,000 Rials per person for long-term vaccination, and 1,130,000 Rials per year. Conclusion: In conditional valuation studies, individuals typically offer a lower bid for the policy under study. However, this study indicated that people are willing to pay more for vaccinations. The findings might have some implications for policy and planning.

The purpose of this paper is to investigate the effect of economic policy uncertainty on exchange rate fluctuations in Iran. For this purpose, the data of the period 1368-1398 based on the frequency of quarterly data and the nonlinear autoregressive distributed lags have been used. The use of nonlinear models will lead to more realistic results than the response of the exchange rate variable to policy shocks. In this study, first, the exchange rate fluctuations index was modeled using the GARCH method, and in the second step, the effects of economic policy uncertainty in the form of positive and negative shocks on exchange rate fluctuations were estimated using the NARDL method. The results of the estimated model show that uncertainty in economic policies in the form of monetary and fiscal policy shocks has led to increased instability in the exchange rate in the country. The analysis of shocks showed that the impact of negative shocks on the exchange rate was more severe than positive monetary and financial shocks.

The aim of this study was to investigate the role of parents' motivation in students' autonomous motivation for doing homework and testing a model on basis of self –determination theory. This study was a correlational study. The statistical population included 7260 students (3510 girls and 3750 boys) from the fourth grade elementary school students of Yazd public schools in the academic year 2016-2017. Participants were 230 students who were chosen through the clustering multistage sampling method. Participants completed Students' motivation for homework (SMH), Parents' motivation for help in homework (PMHH), Parents' attitudes towards homework (PAH), Parents' perceived competence (PPC) and Parents' need supportive behavior (PNSB) The results showed that the parents’ motivations in helping the children to do their homework, the parents’ viewpoints in doing the children’s homework and finally the perceived competence by the parents, can directly influence on the report of parents’ supporting of the independence. The children’s beliefs regarding parents’ independency supporting plays a mediation role between parents’ autonomous motivation, their attitude and perceived competence with students' autonomous motivation.

Seventeen species of three genera, Bruchophagus Ashmead, 1888; Eurytoma Illiger, 1807 and Systole Walker, 1832 (Hymenoptera: Eurytomidae) were reared from 25 plant species collected in rangelands of Qom province in Iran during 2011–2017. Their host plants belong to 4 families: Asteracae, Apiaceae, Fabaceae and Lamiaceae. Six species, Bruchophagus desertus Zerova, 1994; B. hippocrepidis Zerova, 1969; B. parvulus Zerova, 1994; B. platypterus (Walker, 1834); Eurytoma dentate Mayr, 1878 and Systole prangicola Zerova, 1972 are first recorded from Iran. These species were obtained from 25 host plant species among which 6 (i.e. Bruchophagus desertus on Astragalus vanillae; B. parvulus on Trigonella monantha; Systole albipennis on Ferula gumosa, F. ovina and S. prangicola on Prangos acaulis, P. ferulacea seeds) are new host plants for these eurytomid species. Results of this study can be served for providing health seeds for plant regeneration in the rangelands of Iran.

The Need to Update Respiratory Disease Surveillance System and Indigenization of the Pneumonia of Unknown Cause Surveillance System in Iran according to the COVID-19 Pandemic Seyed Hasan Adeli1, Mohammad Aghaali2 1 Associate Professor, Department of Internal Medicine, Faculty of Medicine, Qom University of Medical Sciences, Qom, Iran 2 Assistant Professor, Department of Epidemiology, Faculty of Medicine, Qom University of Medical Sciences, Qom, Iran dr.aghaali@yahoo.com E-mail: letter to Editor .

Objective(s): Genital warts, in addition to being important as a sexually transmitted disease, can alter the emotional support of affected women and threaten couples' emotional relationships. This study was designed with a qualitative approach to investigate the challenges of emotional support for women with genital warts. Methods: The present qualitative study was performed from January 2019 to February 2020 in the dermatology clinic of Razi Hospital in Tehran, Iran, with purposive sampling of 16 women with genital warts. Data were collected through unstructured interviews and analyzed using conventional content analysis approach. Results: After data analysis, a total of 182 codes, 8 subcategories, 3 main categories and 1 theme were obtained. The theme namely "Emotional Support Challenges" included the three main categories of "emotional relationship change", "disclosing the disease to seek support" and "worry for labeling and judgment". Conclusion: The results of the present study showed the challenges of emotional support for women after contracting genital warts. After contracting genital warts, women experienced emotional deterioration. However, receiving emotional support from family members or friends instead of their partner accompanied by the worry of being judged and stigmatization. [ABSTRACT FROM AUTHOR]

Monetary and financial crisis have different effects on different economies of the world, which in addition to economic factors of countries, depends on the type of their interlinkage in a global economy. Regarding to the importance of U.S. monetary policy in international trade, it is necessary to study the effect of monetary policy shocks of this country on gross domestic product of major oil-exporting countries for determining macroeconomic policies and forecasts in a global and dynamic framework. In this paper we examine the impact of U.S. monetary policy on GDP of major oil-exporting countries in the period of 1974-2017 using GVAR approach. The results indicate that the effect of U.S. Monetary shocks on GDP of these countries is different in short-term and long-term.

According to medical studies, cardiovascular diseases are the most common and most important risk factor for mortality and disability in Iran. Hence, the National Blood Pressure Control Program was implemented throughout the country from May 17, 2018 (coinciding with the World Blood Pressure Control Day) to July 6th. One of the important issues in blood pressure screening is the correct diagnosis of high blood pressure according to clinical standards. In this paper, the challenges of "National Blood Pressure Control Program”, has been criticized.

The Curve Number (SCS-CN) method, one of the most widely used methods for estimating runoff in hydrology, has been developed by soil conservation services. The application of SCS equation in Iran may be mixed with considerable errors due to different climatological, geological, and hydrological characteristics. In addition, the other cause of error in this method is the relationship between Ia and S (Equation 2), which is experimental and has been taken from rainwater data in small laboratories (Anonymous, 1972). This relationship can be criticized in terms of the document and was examined in various studies of its accuracy and application (Bo et al., 2011, Shi et al., 2009, Baltas et al., 2007, Mishra et al ., 2006,2004, Hawkins et al., 2002), In order to calibrate the SCS equation and evaluation in empirical relations, Pasekohak catchment was selected. Pasekohak basin includes four sub-basins where flood runoff was gauged during five flood events. Curve Number (CN) for the sub-basins was estimated according to the remote sensing, geological maps, and field works. The real hydrograph for each event was compared with SCS hydrograph in HEC-HMS software, and the calibration and correction of SCS coefficients were conducted. The results suggest a correction coefficient of 0.92 for SCSLag, the average ratio of Ia/S is 0.044, which is completely different from 0.2 in SCS. The CN in the study area is 0.41 of CN provided by SCS.

This paper attempted to identify the effective factors and barriers on efficiency of the production section (canning & processing) the value chain of tuna and tuna like species in Iran. The present research is practical in terms of purpose and it is descriptive and survey in terms of collecting data. The statistical population of this research was board members, executive directors, the production managers and experts of tuna and tuna like species industries. The present research took place during the two-year period leading up to 1397. The data collection tool was a questionnaire which validity and reliability were confirmed. At first, by reviewing the literature and reviewing of the previous studies were identified 41 the effective factors and barriers of the value chain and after removing the repeat factors, 28 variables were extracted. Finally, using expert's opinions, 21 variables were identified as the effective factors and barriers which reduced the efficiency of the chain value of tuna and tuna like species in Iran. In the next step, using statistical analysis and applying the statistical test of the mark, 19 factors were identified as the main the effective factors and barriers and the ranking of these factors was done using Friedman test. It is determined that respectively, problems in supplying raw materials (quality, price and continuity and sustainability of supply), problems in providing financing and working capital, weakness in the production of diverse products according to the target market, high costs of selling the tuna products and lack of fair distribution of profits between different sectors of the tuna value chain have been 5 factors and barriers affecting on decreasing efficiency of the production section of the value chain of tuna and tuna like species in Iran. With identifying these factors and prioritizing them, can be possible planning required for managing of these obstacles with the aim of increasing the efficiency of the production section of the value chain tuna and tuna like species and by providing appropriate solutions for handling higher priority barriers will be possible enhancing the efficiency of this industry and its economic sustainability in the future.

Background and Objectives: Evaluation of learning and teaching activities is one of the activities that is given emphasis and attention in the educational institutions. One of the diagnostic tools in this context is assessment of educational environment and educational space or, in other words, educational atmosphere. The aim of this study was to investigate the students' viewpoint about the educational atmosphere of Qom University of Medical Sciences. Methods: This study was performed as a descriptive-analytical study 0n all the students studying in Qom University of Medical Sciences in 2018. Based on multi-stage sampling, 306 students were selected. Data collection tool was included a demographic characteristics questionnaire and DREEM standard questionnaire. Data were analyzed by independent t-test, one way ANOVA, Duncan's post-hoc test, and Pearson correlation coefficient at the significance level of p

Since the consumption is the main target of production and desired items of manufactures must be in the same direction with consumer demands through seller, evaluation of purchase and sale trends have specially importance. Therefore, this study was conducted in 1393 in order to evaluate the purchase and sale trend in the fish market of Guilan province’s in Bandar Anzali, Astara, and Kiashahr ports. Using a questionnaire data were collected from 30 fish store. Friedman test and chi-squared test were used to analyze the data from descriptive statistics. The results showed that most (26.6%) of fish sellers in Guilan ports were 31 to 40 years old. Most of them have had middle school or high school educations. About half of them have had 10 to 20 year experience, and 65% had 3 or 4-person families. 70% of fish market sellers in these ports possess facilities such as refrigerators to appropriately supply fish, but over 80% of them were lacking in counters. The research findings showed that sellers believed that the buyer and the consumer should give the most attention to freshness and quality when buying fish. In order to evaluate the priorities on not to be consumed fish by consumers from suppliers’ perspective, the unpleasant smell, the tiny bones and the difficulty of cleaning were first to fourth priorities. Sellers found that the healthiness and freshness were as the most important factors in consuming fish from the viewpoint of consumers. In addition, it was discovered that, regarding sellers, lack of access to final consumers, high rent, high municipal taxes, lack of buyers’ awareness lack of awareness, and low space in stores are not among problems with which fish sellers are faced in the markets of Guilan ports. Therefore, organizing these markets and equipping them with counters and standards and, modernizing the traditional market is an essential factor.

In the present study, alkali roasting and oxalic acid leaching were used to extract titanium dioxide from ilmenite, and the effect of ethanol and ascorbic acid on the purity and recovery of titanium dioxide was investigated. In this research, ilmenite was alkali roasted with sodium carbonate for 4 hours at 900˚C. Then, the roasted ilmenite was leached with distilled water for 1 hour at room temperature. Finally, leaching with a mixture of 0.47M oxalic acid and different amounts of ascorbic acid and ethanol was performed at 65˚C. The results showed that using ethanol caused an increase in the amount of recovery and ascorbic acid increased the purity of the extracted titanium dioxide; also, the presence of these two factors at the same time simultaneously increased the amount of purity and recovery of the final product. Eventually, by choosing 0.47M oxalic acid, 0.005M ascorbic acid, and 48% ethanol as the appropriate conditions for leaching media and increasing the leaching time and temperature to 16 hours and 80˚C, it was possible to get titanium dioxide purities which were as high as 93.3% and 90.9%, respectively.

The last two decades consisted of a steady decrease in timber production levels in Iran in order to preserve the Hyrcanian forest as the only source of industrial wood. Consequently, under the so-called “the Forests’ Breathing Plan” in 2017 the Islamic Parliament of Iran stipulated that any wood exploitation from Iranian forests will be prohibited beginning in 2020. In order to respond to increasing wood demand and the cessation of the domestic production of natural-forest wood, the future prospect for the production and trade of wood commodities must be assessed. The main objective of this study was to predict the monetary values of domestic production, imports, exports, and prices of wood products in Iran through 2030 under the Forests’ Breathing Plan. The assessment was performed using the Global Forest Products Model (GFPM) and for three categories of wood products: unprocessed wood, semi-processed wood products and pulp and paper. The GFPM is a partial equilibrium model that forecasts wood demand based on the growth rate of gross domestic product in each country and predicts price by establishing equilibrium between demand and supply. The results indicate that the growth of domestic production will be larger for the second category of wood products than for pulp and paper. The import of unprocessed wood will reach nearly USD 200 million in 2030 and the production and import values of semi-processed wood products will increase 2.2 and 2.6 times, respectively, compared to 2015. Nevertheless, the total trade balance of wood products will deteriorate by 91% for Iran. Compared to pulp and paper, the increase in the price of the unprocessed and semi-processed wood will be greater. Overall, the global position of Iran’s trade and production of wood products will not improve significantly except for the import of unprocessed and semi-processed wood during the period examined.

Natural resources generate the major part of national wealth in resource-rich developing countries. Based on economic theories, if natural resource rents are reinvested continuously in other forms of capital, such countries can benefit from these resources. Thus, examining the mechanism of how to rents affect economic growth through capital accumulation channels is of great importance. Because of the importance of management of resource rents in achieving sustainable growth and development in resource-rich countries, this paper investigates the impacts of resource rents on accumulation of four kinds of capital (foreign, physical, human and social capital) in Iran during 1970-2014. To this end, a simultaneous equations system consisting of various capital forms is designed, and estimated by using Seemingly Unrelated Regression estimator. According to the findings, resource rents have positive effects on accumulation of foreign, human and social capital in Iran. But it is of negative effect on accumulation of physical capital. The results show that physical capital is affected by natural resource rents more than other kinds of capital. This is because of unproductive government investments in physical capital, hence not only resource rents increase physical capital but also they affect physical capital negatively.

International trade has a significant share of the global economy; the issue of regulating foreign economic relations is a major contributor to political talks in the countries. Social, political and cultural events, including political and economic agreements, have a tremendous impact on the trade of countries. Forests around the world produce large amounts of wood and trade in products throughout the world. Since Iran has been trading in wood with Russia and other European countries about 100 years ago, this study was aimed at investigating the effects of political events on the bilateral exports of timber in Iran and Russia, as well as the effect of the Warsaw Treaty and its collapse on The wood trade of member countries with Iran was done using the gravity pattern. The results of the study show that the Warsaw Pact as a political treaty affects the trade relations of the countries of the covenant with Iran, and the per capita income of two trade partners, exchange rate changes and geographical distances on the volume of wood trade and Wood products have been effective. Results for both Iran and Russia show the impact of wood trade on political events as well as domestic laws and bills approved by the two countries.

Among energy carriers, the role of oil is more remarkable in economic development of developed and developing countries. But the fluctuations in oil price, existence of constant challenges between suppliers and demanders, the beginning of descending trend of production and promoting the energy security in its consuming countries have caused besides oil, its substitutes find specific importance. Development and extraction of unconventional resources on one hand have made changes in reservoirs ranking in different areas of the world and has weakened the dependency of consuming countries and on the other hand, it has affected the changing trend of oil price. In this respect, the present study investigates the causal relationship between oil price and supplying unconventional oil and gas during time period of 2000-2015. Two techniques named Granger technique and Toda and Yamamoto technique have been used to investigate the causal relationship. The results of the research show that in all studying period (2000-2015) the unconventional supply is the strong and direct cause for oil price and the indirect and weak price are introduced as the causes of unconventional supply. Also, based on the results, the strong impact of financial markets on the supply of unconventional resources and oil prices has been achieved. On the other hands the results show that unconventional supply will affect the supply of OPEC in the long term (2000-2015). Therefore, this achievement for OPEC countries, as well as Iran, can be used as a result of a strategic change in production policy.

BACKGROUND AND OBJECTIVE: Kangaroo skin contact is an important factor in breastfeeding. However, in contrast to abdominal contact, it is considered timely. Therefore, while shortening the contact time, this study aims at comparing the effects of short abdominal skin-to-skin contact and Kangaroo skin contact on successful breastfeeding. METHODS: This clinical trial study was conducted among pregnant women in maternity hospitals of Torbat Heydarieh in 2015. Sixty-eight primigravida women with term pregnancy and aged 18-40 years were selected through convenience sampling and were divided into two groups of intervention (Kangaroo skin contact) and control (abdominal skin contact). Questionnaires about demographic, fertility and medical data were completed for both groups. Infants with 8-10 Apgar and birth weight of 2500 – 4000 g were exposed to Kangaroo skin and abdominal skin contact for 5-10 minutes. After delivery, The Infant Breastfeeding Assessment Tool (IBFAT) was completed and the mean values of feeding desire, searching, latch on and sucking pattern were analyzed (IRCT: 2014090419039N1). FINDINGS: The mean feeding desire in the intervention group was 2.63±0.6 and in the control group was 2.61 ± 0.6, searching was 2.76±0.43 and 2.73±0.44, latch on was 2.76±0.43 and 2.79±0.41, sucking pattern was 2.82 ± 0.54 and 2.64 ± 0.64, and total score was 11.84 ± 5.10 and 10.79 ± 1.82, respectively, indicating no significant difference in any of the dimensions. CONCLUSION: The results of the study showed that short abdominal skin-to-skin contact and Kangaroo skin contact did not differ significantly regarding their effect on initiation of successful breastfeeding.

Regarding the importance of increment of fish per capita consumption in the health of the society, it is important to understand the benefits of fish and its nutritional value to prevent and treat some diseases. The research aimed to investigate the awareness of fisheries students about the benefits and fish nutritional value to promote the fish consumption in their household and future occupational in society. Students' information questionnaire of two universities on the content of lipids and proteins, vitamins, minerals, amino acids, fatty acids, reasons for fish consumption and their therapeutic effects were collected in 2017. After analyzing Chi-squared and Friedman test and scoring the correct answers, 64.4% of the students did not affect the consumption of their household fish consumption after their acceptance. Fish per capita consumption of students was calculated to be 23.3 kilograms. In their view, Iodine is the richest element in fish to prevent goiter. Cardiovascular disease, Alzheimer and cancer are prevented using fish consumption. With a mean score of 7.53 and a score of 18 at most, 16.4 % of students had awareness of the benefits of fish. The result of the study revealed the need for more serious training and more attention to the fish benefits and nutritional value of the fisheries course curriculum, so that they can be better promoters for the fish consumption among people and their families.

Today, concern about environmental degradation and conservation is a priority. In this regard, the impact of trade on the environment is an important and growing issue in current politics. International trade affects the quality of the environment with respect to the three dimensions of scale, composition and technology. The carbon dioxide emission index is used to demonstrate environmental quality. The purpose of this study was to investigate the effects of the liberalization of the wood industry on Iran's environmental quality in relation to the 16 main wood trade partners within 1995-2015. In this study, the data panel method and the Stata software were used to estimate the model. The results of the model showed that the effect of the scale of 0.08 units and the effect of the combination of 0.427 units were overcome by the technical effect. Also, the results showed that due to the liberalization of the wood industry of Iran in relation to its wood partners, the combination of the three mentioned factors amounting to 0.424 units would reduce the quality of the environment.

Background and Objectives: Considering the fact that internet is a necessity in today’s life and using the internet for different purposes can lead to addiction and dependence, this research was conducted to determine the level of internet addiction among medical students in Qom University of Medical Sciences. Methods: This descriptive cross-sectional study, was carried out on all medical students studying in Qom University of Medical Sciences in 2016. In this study, 116 students were selected by convenience sampling. Data collection tool included personal characteristics questionnaire and standard internet addiction questionnaire of Young. Data were analyzed by central statistics indices, independent t-test, and ANOVA, at the significance level of lower than 0.05. Results: In this study, most of the samples were female (68.1%) and the mean age of the participants was 20.5±2.7, and only 10.3% of the participants were married and 60.3% used the internet at home. Also, the majority (57.8%) of the subjects, were mildly dependent on the Internet. According to the independent t-test, the mean score of internet addiction was significantly higher in males than females (p=0.001), and it was also significantly higher in singles than the married ones (p=0.001). Conclusion: The results of this research were indicative of high level of internet dependence among the studied students; so that familiarization of the student with internet dependency, proper use of this technology, and its usage management, seem necessary.

Background and Objectives: Mucosal immune system has a vital role in body homeostasis, especially in upper respiratory tract during physical activities. The aim of this study was to investigate the effect of vitamin C supplementation on the concentration of salivary immunoglobulin A, cortisol, and total protein in active university girls following a period of exhaustive training. Methods: In this quasi-experimental study, 17 active girls (mean age, of 22.11±2.36 years; weight, 55.70±6.81kg; and body mass index, 20.88±2.25kg/m2), were voluntarily participated and randomly divided into three groups of exercise-vitamin C supplementation, exercise, and control. The exercise-vitamin C supplementation group performed the study’s physical activity program for 7 days in morning and evening, and had daily intake of 500 mg of vitamin C at lunchtime, and the exercise group performed the exercise without supplementation. The control group performed no exercises and received no supplement. Saliva samples were collected one day before starting the physical activity program and 24 and 72 hours after the last exercise session, at 9:30 AM. Data were analyzed by repeated measures ANOVA statistical test. Results: In this study, no significant difference was observed between the groups in saliva flow rate, concentration of immunoglobulin A, IgA secretion, concentration of cortisol, total protein, and IgA to salivary total protein ratio. There was no significant difference between measurement steps (p>0.05), except in the exercise group (p=0.00). Conclusion: The present study could not show any relationship between performing an exhaustive training program, vitamin C supplementation, and the mucosal immune system.

Using remote sensing data is an applied method to estimate above ground biomass. In this study, satellite radar data of ALOS-2, with the full polarization and the optical data of Sentinel-2, has been used to estimate the aboveground biomass in the Nav-e Asalem forests, Gilan province. The backscattering coefficients at different polarization, the texture measures and target decomposition features of SAR images, obtained original and synthetic bands from optical images in three different combinations of radar images, optical images and the composition of radar and optical images, as inputs to the Artificial Neural Network (ANN) and Multiple Linear Regression (MLR) models were used. In order to measure aboveground biomass, 149 sample plots were laid out. Evaluation of ANN and MLR models using R2 and RMSE statistics showed that in all cases the ANN was better performance to estimate the aboveground biomass than MLR. The best results showed that the ANN from combined optical and radar data with R2 and RMSE, 0.86 and 31.62 Mg/ha (15.34%), respectively, can be the best applied method to estimate the aboveground biomass. The results of radar images and optical separately, with the R2 and RMSE for the modeling of aboveground biomass have been shown, respectively, 0.57 and 49.17 Mg/ha (23.85%) by radar images and 0.7 and 39.53 Mg/ha (19.17%) by the optical images, superior modeling to estimate aboveground biomass represents by optical imaging. The overall and more accurate results to estimate of aboveground biomass have been shown when we used combined radar and optical images with the ANN model.

Introduction and purpose: One of the problems of water distribution systems is loss of large volumes of water due to the occurrence of various events, which incurs a huge financial loss. Regarding this, the aim of the present study was to investigate the rate of events and water loss in the water distribution system and its related factors in Azna, Lorestan province, Iran, during 2008-2014. Methods: This cross-sectional study was conducted using census method, surveys, and field data collection. The amount of water production and consumption, the volumes of water loss, the number of accidents, type of pipe, pressure zone, as well as the age and length of the pipes recorded during 2008- 2014 were studied and analyzed. Results: According to the results, the highest (34.48%) and lowest (20.57%) amount of water losses happened in 2008 and 2014, respectively. High pressures in water systems had significant relationship with the number of events as well as the amount of water loss and water consumption. In addition, higher length and age of the pipes had a direct correlation with increased number of events and water loss. Furthermore, the maximum number of events were found to occur in the pipe embranchment and galvanized pipes. Conclusion: This study showed that of events was directly related to the length and age of the pipes, the water pressure, and number of branches. Also water loss quantity can be reduced by applying suitable management techniques in different sections. Furthermore, the water loss can be significantly controlled by taking such measures as reducing the pressure in the high-pressure zones, timely replacement of old and inappropriate pipes, appropriate fixing of the pipes, replacement of the galvanized pipe, and standard implementation of pipes and fittings.

Background: Many hospitals of Iran make use of their therapeutic capacities in order to attract medical tourists and increase revenue and efficiency of their affiliated hospitals. This issue has major benefits for hospital and tourists. This study assessed the potential of medical touristschr('39') attraction in a military hospital in Tehran. Materials and Methods: This was a descriptive- analytical one which used secondary data to analyze. Data gained from quality improvement and finance offices, recipients of service and health information management units from the first of 2014 to the first semester of 2015. Strategic plan document were used to analyze the opportunities and strengths points. Results: The mean of studied hospital performance indicators like bed occupancy rate, length of stay, Bed turnover, rate of admissions to bed, mortality and bedsores rates, nosocomial infections, medication error, patientschr('39') rights and patient satisfaction were 4.68 , 3.3, 5.1 , 6.6 , 5.2, 1, 69, 9.74 , 70 percent respectively. The strengths points of the studied hospital were diverse expertise, updated equipment and minimum waiting time. Conclusion: Because of skilled man power, physical resources and especially modern equipment, the hospital does not need huge investment in medical touristschr('39') attraction. This issue will increase admission, productivity and satisfaction of clients and staff.

Epoxy resin as a thermoset polymer has a suitable thermal resistance with high mechanical properties. In addition, the resin exhibits good continuum presentation for both neutron and gamma beams. Consequantly, it is the primary concern in the nuclear industry. In a neutron shielding, energetic secondary gamma products are unavoidable. For attenuating these gamma rays, the elements with high atomic number in the polymeric matrix are inevitably used. Because of various problems of lead shield, studies are inclined to the lead free shielding. In this investigation and, by using Monte Carlo method, the ability of secondary gamma attenuating was studied on a polymeric shielding based on reinforced epoxy with different weight percentages of 5, 10 and 20 of tungsten oxide and lead oxide without any neutron poisons. The results show that by the same weight percentage, the reinforced composite shield with tungsten oxide could afford better shielding performance. The more increase in the weight percentage of the reinforced material, in addition to an increase in the weight of the shield, reduce the ability of shielding performance.

The present study aimed at looking into the fish consumption preferences and purchase patterns among 266 households of Sari in order to identify the fish marketat Mazandaran province. To do so, a questionnaire was provided to be administered among consumers to state their preferences towards the type of fish species, purchase forms of fish as well asfish purchasing pattern in their family. Descriptive statistics as well as referential analysis was conducted through Friedman Test. Results showed that meat consumption priority among the households of Sari constituted the consumption of poultry meat, lamb, fish and beef, respectively. As to the investigation of fish purchase pattern, it was that almost two-thirds of households in Sari bought fish less than once a month and only a few percentages of them (4.1 percent) purchased them on a weekly basis.It was also revealed that consumers in Sari prefer marine fish more than farmed fish and cold-water fish more than warm-water fish. Fresh, live and canned fish were the preferred forms of purchase for the consumers in Sari, and other forms of fish such as frozen, smoked and salted fish (total 7.9 percent) were rarely preferred by the consumers. Findings of the current research can contribute to powerful decision-making of companies and suppliers in terms of which product should be provided to the market for more sale. Therefore, recognizing the needs and desires of consumers and understanding their purchase behavior are effective steps to meet their expectations and ultimately increasing fish consumption.

The human need for food, during recent decades has increased dependence on pesticides and chemical pesticides. Due to the destructions effect of chemical toxins, adoption of bio and non-bio technologies Identical with the sustainable agriculture such as pest control by natural enemies, is taken into consideration by agriculture researchers. so, the process of adopting biological control technology is investigated in the farms of tomato in Jiroft County during the period of 2010 until 2014. Why some farmers are faster to adopt this technology is investigated using duration analysis, which allows the timing of an event to be explored in a dynamic framework. The empirical results highlight the negative importance of age variable, and positive effect of farm size and attitude to control biologic. In this study due to the use of survival analysis model it was possible to evaluate the effect of time dependent variables include product price and years of knowledge about control biologic on speed of adoption. Therefore, it became clear that if in a year the price of the product is increase the probability of adoption is increased as well as if the farmer has been informed about biological control technology earlier the technology adoption rate increases.