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Background: Various studies have reported the prevalence of low back pain in specific populations very differently. The aim of the present study was to determine the prevalence of low back pain and related factors among the referees to health centers in Dehloran, Iran. Material and methods: In this cross sectional study, two hundred and seventy three referees to health centers in Dehloran, who aged between 20 to 45 years old and were satisfied to be studied, were entered to the study after providing signed written consent form. The data were collected using the valid/reliable researcher -made questionnaire. The validity of the questionnaire has been obtained by inserting the experts' views in the questionnaire and the reliability was measured through cronbach's alpha which was calculated as 78%. The data has been analyzed using SPSS16. Results: The lifetime prevalence of low back pain among the studied participants was 52.38%. There were significant relationship between low back pain and education level, residency location, hours per day working with computer and sedentary life style. (All p value was < 0.05). Conclusion: This study showed low back pain was prevalent among referees to health centers aged between 20 to 45 years old. Sedentary life style and much working with computer were related significant factors. Designing proper intervention to prevent low back pain among this target group is recommended.  

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Targeting followed by pattern making and planning to reach to goals is a necessity in all societies. Urban planning, as a subject expressing interactions between mankind, culture, living style and environment, plays an important role in reaching to the Islamic society goals along with keeping the original identity and promoting the culture and ethics, and consequently is very important in preparing a local model based on the Islamic teachings appropriate to the Islamic-Iranian context. Islam has paid special attention to social issues; just do not discuss individual aspects only. Way to achieve prosperity has been the establishment of an Islamic community and Change and growth, resulting in a society where people of all decisions and activities have been. In the Quran, Allah does not change the destiny of any nation unless they themselves. Issues such as community participation, social justice and components - such as these are placed on the social dimension of the Quran and hadiths emphasize. On the other hand Iran has long ago been important social issues and it has Construction of public buildings in the city and had a significant role. In this paper, after reviewing the literature about the social aspects of urban planning, we explained the social components of Islamic-Iranian urban planning pattern of progress. Accordingly, factors like security, social justice, health, neighborhood etc. were introduced as the important elements in social considerations of Islamic-Iranian urban planning pattern, based on Islamic teachings and Islamic-Iranian urban planning history and background .Each of the components of the urban social Iran - Islamic has a different degree of importance,some components may all components in its place and Or even creator them to be. The components and their corresponding degree of importance based on Islamic perspectives are examined. The social concepts such as privacy, health, social justice, security, peace and tranquility and also emphasized the teachings of Islam and the Islamic Republic of Iran has been in the planning And can serve as guides and tips for Islamic and Iranian urban spaces, enhanced quality of life, increased social interaction, participation of residents in the neighborhood, social justice and economic prosperity can be used. Create a semantic framework that is based on the principles expressed in the social body based on the ideas of God and to lead. Therefore, the physical space of architecture and urbanism in shaping the framework and components manufacturer must identify and examine their relationships and to build on the structure of the physical space of cities. Urban planning, urban design, architecture and industrial design matters and social climate will affect the Iranian Islamic cities. These components are not only social prosperity,social equity,increase physical qualities, enhancing the sense of belonging to the environment, but also contribute to the increased value of land, recreating the old quarters of cities and economic issues influence is remarkable.Urban pattern recognition component of Islamic and Iranian decision-makers and decision-makers, the public,and what to get rid of the confusion of spiritual and material life of man,it is important to define it.

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Background: This paper is devoted to preliminary assessment of the economic cost of land degradation in Albania resulting from unsustainable land use, based on comparing the costs of action for dealing with land degradation versus the costs of inaction.
Materials and Methods: The causes of land degradation are divided into proximate and underlying ones, which interact with each other to result in different levels of land degradation. The economic impacts of land degradation on soil uses are valued according to their typology and their different impacts have been classified spatially into on-site and off-site effects, distinguished according to the economic values that are affected.
Results: The results showed that the on-site costs of soil degradation are significant, but are not be a major concern in the short run. However, on the local scale, impacts will be more substantial for the affected areas. The off-site costs of soil degradation are substantial, however. In some cases, they may exceed the on-site costs, despite the fact that a large part of the off-site costs could not be quantified. Discussion and Conclusions: Some of these issues, especially the conservation of water resources and their sustainable management to reduce sedimentation in rivers and dams, and flood risk reduction, call for immediate conservation measures.

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Linguistic varieties are broadened by complexities of social relations. Among these, interaction of phonetic and social variables plays important role in linguistic varieties. The goal of this paper is to study the nature of phonological metathesis and its relation to social variables of age and education. The framework of this article is social phonology using analytic and field study methodology. In phonological analysis which was in optimality theory, it was determined that sonority sequence principle and syllable contact law are responsible for this process. In this research 110 words are pronounced by 56 individuals. In phonological account which was within optimality theory it was determined that sonority sequence principle and syllable contact law are main causes of this process. Also in this research the frequency of the consonants involved in the process is determined. Participants are classified according to age and education. Regarding the age of participant four groups have been chosen: 4-5, 6-7, 29-40 and 41-69, it means that educated, illiterate, mid education and academic. Results show that by the increase of age, the rate of metathesis decreases. Also by increase in education the rate of metathesis decreases.

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As one of the most important products of Iran, pistachio has a significant share in non-oil revenues. Its annual foreign exchange earnings are over 800 million dollars. However, production of this nut in the country’s major production centers is faced with many problems regarding the efficiency and productivity of the inputs. This study was performed by using two-stage cluster sampling method. The results showed that with the increase in energy carriers’ prices, the farmers of the region would tend to use the optimal amounts of inputs in the long term, thus, reducing energy consumption from 46,016.72 to 31,092 MJ ha^-1. Also, the present values of energy productivity, its efficiency, and specific energy of, respectively, 0.03, 0.42, and 35.05 MJ kg^-1 would be optimized to 0.07, 1.10 and 13.47 MJ kg^-1. Besides, it was revealed that the net energy, which was negative under the existing condition (-26,532 MJ), would increase to 3,160 MJ following the increase in the price of energy carriers. Above all, the non-renewable energy consumption would be reduced from 39,743 to 26,457 MJ. Of course, to achieve the mentioned results, government support of farmers in the short term is necessary in order to facilitate and expedite the change in technology.

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In the present study, a novel integrated system containing biomass gasifier, sodium high-temperature heat pipes, and solid oxide fuel cells is introduced. The integrated system is taken into consideration due to its high efficiency and power in order to simultaneous producing electrical power and heat. The modeling of system is performed using equilibrium constants, mass and energy conservation law and the analysis of codes is done in EES software. The effect of gasifier STBR, current density, fuel utilization factor, and outlet fuel cell’s temperature as variable parameters is investigated on the power and total energy efficiency of integrated system using response surface method; after validation of modeling in comparison to the experimental results. The analysis of variance results indicate that fuel utilization factor (with 53% contribution) and current density (with 33% contribution) are the most effective parameter on the power and total efficiency, respectively. The power of integrated system is increased by increasing of temperature while power has an increasing behavior follows by decreasing behavior by increasing fuel utilization factor. The total efficiency is increased by increasing temperature and STBR while it is decreased by increasing current density and fuel utilization factor. The results revealed that the power and total efficiency is obtained at optimum states as high as 300 kW and 90%, respectively.

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The use of new energies, including geothermal energy, is rapidly devoloping in the world. In Iran, the Sabalan area has a great potential for generating energy from geothermal energy sources. In this paper, a new power generation combined cycle (flash combined cycle with supercritical carbon dioxide and organic Rankine cycle) is proposed with respect to two wells with different temperatures and pressures for Sabalan geothermal sources. For the organic Rankine cycle, four fluids are considered appropriately and then proposed combination cycle is investigated by energy and exergy analysis. In this study, a new method proposed for the determination of Pinch point for carbon dioxide heat exchangers. In the end the proposed cycle has been optimized relative to seprators pressure, the second evaporator temperature and the carbon dioxide cycle pressure ratio. The results show that the n-butane agent has been selected as the most suitable fluid for the Rankine cycle. For the optimal condition, the net power of the proposed cycle is 19934 kW, the cycle efficiency will be 17.05% and the exergy efficiency will be65.38 %.The results of exergy analysis show that the low pressure turbine in geothermal have the highest value of exergy destruction. The results show that net power output, energy and exergy efficiencies of the proposed cycle in this paper is 15.29 %, 17.06% and 18.35% higher than the corresponding values obtained for the previously proposed system.

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In this article, a new power, cooling and heating cogeneration system consisting of a solid oxide fuel cell (SOFC) - gas turbine (GT), a heat recovery steam generator (HRSG), Generator-Absorber-heat eXchange (GAX) absorption refrigeration cycle and a heat exchanger for heat recovery (HR) has been studied from a thermodynamic and economic perspective. The modeling of this cycle was done by solving the electrochemical, thermodynamic and exergoeconomic equations for fuel cell and system components, simultaneously. The results showed that the exergy of our proposed combined cycle is 14.9% more and the irreversibility rate of this cycle is 10.6% less than that of the combined SOFC-GT-GAX systems in the same conditions. Also, the fuel cell and the afterburner have the highest rate of exergy destruction among other components due to irreversibility. Exergoeconomic analysis showed that the sum of uint cost of products (SUCP), the exergoeconomic factor, the capital cost rate and the exergy destruction cost rate for the overall system is equal to 331.1 $/GJ, 29.3%, 10.47 $/h and 25.32 $/h, respectively. Parametric studies showed that increasing the current density will increase the net electrical power, heating capacity of HRSG and HR heat exchanger, cooling capacity and total irreversibility. Also, with increasing of the current density, both the exergy efficiency and SUCP decrease.

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In the present study, a new combined cycle (including a two-step flash evaporation, the Kalina cycle, and a proton-exchange membrane) for simultaneous power and hydrogen generation from Sabalan geothermal wells has been proposed and analyzed from the viewpoints of energy and exergy. The effects of important parameters including separators pressure of flash evaporation, the minimum temperature difference in the pinch point, Kalian higher pressure, superheated geothermal fluid, the ratio of consumed power for hydrogen production and dead state temperature on the amount of produced hydrogen, the net generating power, thermal and exergy efficiencies of the proposed combined cycle have been studied. The results show that for the investigated case in the proposed combined cycle, the amount of the produced hydrogen, net generating power and energy, and exergy efficiency were 1536kg/hr, 12.83MV, 11.39% and 43.64%, respectively. Increasing the pressure of the separators was not effective in increasing hydrogen production, while with increasing the first separator pressure, as well as, the second separator pressure to the optimum pressure, the thermal and exergy efficiency increase. With increasing the temperature of the proton membrane electrolyzer, the produced hydrogen discharge increases and while maintaining cycle net output power, thermal and exergy efficiencies increase. Also, at the optimum point for high-pressure Kalina, the maximum amount of hydrogen production is obtained. The highest amount of exergy degradation was obtained for the protonated membrane electrolyzer, evaporator and condenser 2, respectively.

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Background:
SARS-CoV-2 which first was observed in Wuhan region, China in December 2019 has affected many organs, such as central nervous system. We describe a case of a 57-year-old male patient, in the hospital with the loss of consciousness, in the form of lack of verbal and visual communication. He got a seizure attack for about 3 minutes in the form of generalized tonic-clonic seizure (GTS) and admitted to the neurological department and was intubated. Since, the patient was not aware, awake, did not obey, corneal reflexes test was positive and his pupils were isochoric and reactive therefore, the primary diagnosis was cerebrovascular accident (CVA). On the second day after admission, although the brain computed tomography (CT) did not show brain lesion, but the chest X-ray (CXR) revealed lung involvement. In addition, on third day the RT-PCR test for coronavirus RNA in and the cerebrospinal fluid and nasopharyngeal swap done and the result was positive for both of them. Therefore, treatment for the covid-19 was started.
Results:
Since, the treatment for the covid-19 was started with Atazanavir, Clindamycin and Ceftriaxone. Ten days after hospitalization, the lung involvement and general condition of patient got better and after two weeks he was released from the hospital.
Conclusion:
GTS should be considered as a neurological outcome of COVID-19 and medications against the coronavirus, such as Atazanavir, Clindamycin and ceftriaxone can recover the neurological deficits in these patients.


 

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One way to better appreciate the value of rangelands with the purpose of developing better policies and make sustainable use of these resources is to determine the monetary valuation of the ecosystem services of these rangelands. Thus, the present study aimed to estimate the economic values of provisioning and regulating services of Rig Ishaqabad Rangeland in Kerman Province, Iran. To this end, samples of the soil and vegetation cover of the region were taken. Following conduction of various experiments, the type and texture of the soil and its content of nitrogen, phosphorus, and potassium nutrients, the soil erosion coefficient, and the amount of carbon absorption for each vegetation type were determined. Then, the monetary values of forage production, carbon absorption, oxygen production, soil production, nutrient absorption, and erosion prevention were estimated using the Revealed Preference Approach. According to the findings, in 2019, the total economic value of the rangeland's services was USD 0.54 million; and the values of provisioning and regulating services were USD 260,102.85 and 283,841.77, respectively. In addition, the economic value of vegetation types of Artemisia sieberi-Denderostellera lessertii (Ar si-De Le), Denderostellera lessertii- Peganum harmala (De le-Pe ha), Cousinia congesta (Co co), Calligonum polygonoides- Astragalus sp (Capo- As sp), Artemisia Sieberi-Peganum harmala (Ar si-Pe ha) were USD 115,466.42, 159,045.6, 54,815.14, 85,220.66, and 129,396.78, respectively. Based on the results, the De le-Pe ha vegetation type was of the highest value with a value of 49.07 US dollars per hectare. The calculated monetary values can be a useful tool in determining the long-term rental rate of this rangeland and determine the amount of investment to preserve or restore it.

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