Mohammad Bagher Askari, Mohammad Reza Bahrampour, Vahid Mirzaei, Amir Khosro Beheshti Marnani and Mirhabibi Mohsen
The aim of this paper is to apply a watery infrared filter for silicon solar cell efficiency enhancement in Kerman province of Iran as a talent region for solar energy production.
Abstract
Purpose
The aim of this paper is to apply a watery infrared filter for silicon solar cell efficiency enhancement in Kerman province of Iran as a talent region for solar energy production.
Design/methodology/approach
With this research, the water is applied as a filter for silicon solar cells in different volumes and thicknesses.
Findings
The obtained results showed that using various amounts of water could be a suitable choice for increasing the efficiency of silicon solar cells.
Originality/value
Other wavelength regions just cause the increase in the entropy and decrease in the efficiency. With this research, the water is applied as a filter for silicon solar cell in different volumes and thickness. The obtained results showed that using different thicknesses of water could be suitable choice for increasing the efficiency of silicon solar cell.
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Mohammad Reza Bahrampour, Mohammad Bagher Askari, Vahid Mirzaei Mahmoud Abadi, Mohsen Mirhabibi and Mahdi Tikdari
This paper aims to study the Lut desert, also known as the Dasht–e–Lut, starting with a summary of its location as a large salt desert in southeastern Kerman, Iran, as well as its…
Abstract
Purpose
This paper aims to study the Lut desert, also known as the Dasht–e–Lut, starting with a summary of its location as a large salt desert in southeastern Kerman, Iran, as well as its climate, being one of the world’s driest places. Next, a statistical analysis is performed based on a reasonable minimum level of 10 per cent. The computation of electric energy produced by sunlight in the studied region is, then, provided using a number of high-efficiency and suitable solar cells. Finally, the authors will compare the production of electrical energy to the consumption energy in Iran and Kerman province.
Design/methodology/approach
According to calculations of the present study and the analyses of the tables and charts provided, the use of solar energy and the amount of energy used in different areas was discussed. Lut desert in Iran is one of the touristic attractions of Kerman province: while only a very small area of this desert known as the Kalut is of interest to tourists, the vast remaining area of this desert is currently left without use. Lut and its surrounding towns and villages are not suitable for agricultural due to the lack of water in the region, and relatively poor people live within the area. The findings of this study showed that throughout the region, there is a very high potential for energy supply of Kerman and Iran.
Findings
The practical use of Lut desert potential in the production of electric energy from solar energy, besides its significant role in cost reductions, can also positively affect the living standards of local residents as well as job and income creation for the country. Efficient use of only 10 per cent of the area of Lut desert, via using its solar energy, can produce a considerable amount of energy for the region and for the country in large. Although the present study only investigated the solar energy of the region, it also has a high potential in wind energy and geothermal optimum use. The research team will, hence, continue its work on calculating the amount of energy generated from all types of renewable energy in this area. This paper showed that application of solar cells in this region is appropriate for providing a magnificent amount of electric-energy requirements of Kerman province and of Iran.
Originality/value
In recent years, Iran’s nuclear, oil and natural-gas industries have been the subject of intensifying sanctions from certain international communities. Now, the country wants to develop a sector in which it has more leeway, i.e. the renewable energy; wind and solar energies are always available, and no one can put sanctions on them. Also, to provide household electricity in remote areas (which are not connected to the mains electricity grid), energy storage is required for use of renewable energy. Usually, however, renewable energy is derived from the main electricity grid, and this means that as the mains electricity grid is organized so as to produce the exact amount of energy being consumed at that particular moment, the energy storage is mostly not applied. Energy production on the mains electricity grid is always set up as a combination of renewable-energy plants, as well as other power plants (e.g. the fossil-fuel power plants and nuclear power). This combination, nevertheless, is essential for this type of energy supply (i.e. the wind turbines, solar power plants, etc).
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Mirhabibi Mohsen, Askari Mohammad Bagher, Bahrampour Mohammad Reza, Mirzaei Mahmoud abadi Vahid and Tikdari Mahdi
Regarding the renewable energies, the cost of producing electricity and the remaining reserves from fossil fuels in Iran is compared with the same in other countries. Several…
Abstract
Regarding the renewable energies, the cost of producing electricity and the remaining reserves from fossil fuels in Iran is compared with the same in other countries. Several advantages of renewable energies are studied in the present research with emphasis on solar energy; the Lut desert in Iran is introduced as a high potential for supplying the country’s energy. Various effects of such generation of energy on economy, environment, and public health are also studied.
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Vahid Mohamad Taghvaee, Abbas Assari Arani, Mehrab Nodehi, Jalil Khodaparast Shirazi, Lotfali Agheli, Haji Mohammad Neshat Ghojogh, Nafiseh Salehnia, Amir Mirzaee, Saeed Taheri, Raziyeh Mohammadi Saber, Hady Faramarzi, Reza Alvandi and Hosein Ahmadi Rahbarian
This study aims to assess and decompose the sustainable development using the 17 sustainable development goals (SDGs) in Iran in 2018, for proposing agenda-setting of public…
Abstract
Purpose
This study aims to assess and decompose the sustainable development using the 17 sustainable development goals (SDGs) in Iran in 2018, for proposing agenda-setting of public policy.
Design/methodology/approach
It ranks the SDGs not only in Iran but also in the region and the world to reveal the synergetic effects.
Findings
Based on the results, subaltern-populace generally suffers from the hegemonic domination of ruling elite-bourgeois, lack of strong institutions, heterogeneous policy networks and lack of advocacy role of non-governmental organizations, due to no transparency, issues in law or no rule of law, no stringent regulation, rent, suppression and Mafia, all leading to corruption and injustice.
Practical implications
To stop the loop of corruption-injustice, Iran should homogenize the structure of the policy network. Furthermore, the failed SDGs of the three-geographic analysis are the same in a character; all of them propose SDG 3, good health and well-being as a serious failed goal.
Social implications
In this regard, strong evidence is the pandemic Coronavirus, COVID 19 since 2019, due to its highly-disastrous consequences in early 2020 where the public policymakers could not adopt policies promptly in the glob, particularly in Iran.
Originality/value
In Iran, in addition to this, the malfunction of health is rooted in “subjective well-being” and “traffic deaths,” respectively. Concerning the transportations system in Iran, it is underscored that it is damaging the sustainable development from all the three pillars of sustainable development including, economic, social and environmental.
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Milad Abdi, Roya Ghanavati, Vahid Lohrasbi and Malihe Talebi
The Pediococcus strains belong to the group of lactic acid bacteria (LAB). This study aims to isolate and identify the Pediococcus spp. from mother’s milk, and investigate their…
Abstract
Purpose
The Pediococcus strains belong to the group of lactic acid bacteria (LAB). This study aims to isolate and identify the Pediococcus spp. from mother’s milk, and investigate their tolerance to low pH and bile salts, antibacterial activity, attachment to HT-29 cells and effect on cholesterol-lowering and digestive enzymes in mice.
Design/methodology/approach
Pediococcus species were isolated from mother’s milk, then tested for tolerance to acid and bile salts, their antibacterial effect and attachment to HT-29 cell line. In mice experiment, the levels of triglyceride (TG), total cholesterol (TC), HDL cholesterol (HDL-C), LDL cholesterol (LDL-C) and digestive enzymes such as amylase and lipase in serum of mice were measured after administration of 108 CFU/mL bacterial suspension.
Findings
A total of 24 Pediococcus spp. including 16 isolates of Pediococcus pentosaceus and 8 isolates of Pediococcus acidilactici were isolated. Fifteen isolates (62.5%) were able to survive in low pH and bile salt concentration. Ten isolates (41.6%) exhibited the most powerful inhibitory effects against both Gram-positive and Gram-negative bacterial pathogens. A total of four Pediococcus isolates (16.67%) showed strong attachment to HT-29 cells. In contrast to HDL-C and amylase, the serum levels of TC, TG and LDL-C were reduced and lipase was elevated significantly following administration of mother milk-derived Pediococcus isolates.
Originality/value
The Pediococcus isolates demonstrated good probiotic properties in particular cholesterol-lowering ability in mice. Thus, after more studies they can be considered as probiotic strain(s).
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Yaser Khajebishak, Amir Hossein Faghfouri, Ali Molaei, Vahid Rahmani, Samira Amiri, Mohammad Asghari Jafarabadi and Laleh Payahoo
This paper aims to investigate the potential relationship between depression, diabetes knowledge and self-care management with quality of life in diabetic patients.
Abstract
Purpose
This paper aims to investigate the potential relationship between depression, diabetes knowledge and self-care management with quality of life in diabetic patients.
Design/methodology/approach
This analytical cross-sectional study was conducted on 309 diabetic patients in Tabriz, Iran in 2015-2017. Quality of life was assessed by a validated questionnaire. The Persian version of the Beck Aeron questionnaire was used to assess the depression status. Knowledge and self-care management was evaluated by the health belief model questionnaire. Simple and multiple regression models were used to determine the relationship between the mentioned factors and the quality of life in diabetic patients.
Findings
Thirty-six per cent of the patients suffered from depression. The mean score of the total quality of life was 33.75 ± 8.72. The scores of the three domains of the quality of life were less than the normal range (“complication of diabetes” domain: 9.93 ± 3.16, “diagnosis, therapy and follow-up” domain: 10.91 ± 3.31, “psycho-social effect of diabetes” domain: 12.93 ± 4.41). The score of “complication of diabetes” score in males was significantly higher than females (p = 0.001). There was a significant relationship between depression (p < 0.001), self-care management (p = 0.019) and two parameters of knowledge (diet: p = 0.006 and diabetes: p = 0.004) with quality of life of diabetic patients.
Originality/value
The obtained results presented an unfavorable status of knowledge, physical and mental health in diabetic patients and a strong relationship between health-related factors with quality of life. Therefore, it is suggested to hold community-based health-promoting programs to enhance the overall life satisfaction in people with diabetes.
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Madjid Tavana and Vahid Hajipour
Expert systems are computer-based systems that mimic the logical processes of human experts or organizations to give advice in a specific domain of knowledge. Fuzzy expert systems…
Abstract
Purpose
Expert systems are computer-based systems that mimic the logical processes of human experts or organizations to give advice in a specific domain of knowledge. Fuzzy expert systems use fuzzy logic to handle uncertainties generated by imprecise, incomplete and/or vague information. The purpose of this paper is to present a comprehensive review of the methods and applications in fuzzy expert systems.
Design/methodology/approach
The authors have carefully reviewed 281 journal publications and 149 conference proceedings published over the past 37 years since 1982. The authors grouped the journal publications and conference proceedings separately accordingly to the methods, application domains, tools and inference systems.
Findings
The authors have synthesized the findings and proposed useful suggestions for future research directions. The authors show that the most common use of fuzzy expert systems is in the medical field.
Originality/value
Fuzzy logic can be used to manage uncertainty in expert systems and solve problems that cannot be solved effectively with conventional methods. In this study, the authors present a comprehensive review of the methods and applications in fuzzy expert systems which could be useful for practicing managers developing expert systems under uncertainty.
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Zeinab Sadri, Fereshteh Najafi, Reza Beiranvand, Farhad Vahid and Javad Harooni
While several studies have reported a relationship between chronic daily headache (CDH) and different dietary patterns, no study has investigated the association between CDH and…
Abstract
Purpose
While several studies have reported a relationship between chronic daily headache (CDH) and different dietary patterns, no study has investigated the association between CDH and the dietary inflammatory index (DII). This study aims to hypothesize that a higher DII score (proinflammatory diets) is associated with higher odds of CDH.
Design/methodology/approach
This cross-sectional study was performed using the baseline data of the Dena PERSIAN cohort study, including demographic information, body mass index, medical history, laboratory tests, sleep duration and blood pressure. The DII was computed based on the data collected by a valid 113-item food frequency questionnaire and a 127-item indigenous food questionnaire. The association between CDH and DII score was analyzed by simple and multiple logistic regression.
Findings
Out of 3,626 people included in the study, 23.1% had CDH. The median DII was −0.08 (interquartile range = 0.18). People in the third and fourth quartiles of DII (proinflammatory diet) had a 20% (odds ratio: 0.80; 95% confidence interval: 0.65–1) and a 25% (odds ratio: 0.75; 95% confidence interval: 0.61–0.94) lower chance of having CHD than those in the first quartile, respectively. After adjustment for confounding variables, this association did not remain statistically significant (p > 0.05).
Originality/value
Although the analysis conducted without adjustment for medical history showed a significant association between proinflammatory diet and reduced CDH, considering the diverse etiology of different types of headaches and the paucity of studies in this area, further studies are needed to investigate the DII score of patients by the type of headache, its severity and duration.
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Vahid Beygi, Mohammad Abooyee Ardakan and Seyyed Mohammad Moghimi
Despite the rather adequate physical and human resources available to Iranian state-owned enterprises (SOEs), they have proved not only unproductive and unprofitable but also…
Abstract
Purpose
Despite the rather adequate physical and human resources available to Iranian state-owned enterprises (SOEs), they have proved not only unproductive and unprofitable but also corrupt in cases due to their corporate governance (CG) systems. This study aims to identify the most important challenges faced within designing, implementing and operating such systems in Iranian SOEs.
Design/methodology/approach
A judgmental sampling technique was adopted for the purposes of the present qualitative study to select a heterogeneous group of interviewees in terms of experience and expert knowledge in CG and SOEs. Using 28 semi-structured interviews and the thematic analysis methodology within an exploratory approach, the themes/challenges were extracted from the data thus collected that were subsequently analyzed and explicated.
Findings
The 16 challenges derived from the data set were subsequently classified into the four categories of “general assembly deficiencies”, “contextual issues of ownership”, “board deficiencies” and “external managerial constraints”.
Research limitations/implications
This study aims to provide insights into policy-making systems at both national and international levels to gain a better understanding of the contextual factors that could be exploited toward developing and/or reforming CG codes. To improve SOEs, this study also suggests four main solutions to the CG challenges faced within Iran and similar centralized economic planning systems.
Originality/value
The literature on the topic indicates that while a few theoretical and empirical studies have been conducted on CG of SOEs, no study has ever been conducted on similar Iranian cases. The present study provides ample empirical evidence from the CG systems in a state-controlled and centralized economic system to offer new insights into the comparative CG, especially in a developing country like Iran, where the government is the major player in the economy.
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Merve Guldali, Hakan Guveli, Ferhat Cetin, Emre Batuhan Kenger, Tugce Ozlu and Can Ergun
Diabetes is one of the health problems of increasing importance owing to the increase in its incidence and the problems it causes, and it is closely related to nutrition. This…
Abstract
Purpose
Diabetes is one of the health problems of increasing importance owing to the increase in its incidence and the problems it causes, and it is closely related to nutrition. This study aims to determine the relationship between the dietary inflammatory index (DII) scores of individuals with type 2 diabetes, depression, anxiety and quality of life.
Design/methodology/approach
In this cross-sectional study, 158 individuals with type 2 diabetes who applied to a nutrition and diet outpatient clinic of a private hospital in Istanbul were included. Their depression status was evaluated using the Beck Depression Inventory; their anxiety status was evaluated using the Beck Anxiety Inventory; and their quality of life was evaluated using the Short Form 36 Quality of Life scale. One-way ANOVA test was used to define the difference between groups. All test results were evaluated at a significance level of 0.05.
Findings
There was no significant relationship between DII scores, depression (p = 0.814) and anxiety (p = 0.817). However, a significant decrease was observed in the scores of the quality of life criterion in the groups with high depression and anxiety scores (p < 0.05). In addition, participants with high anxiety states had higher HbA1c levels (p = 0.043).
Originality/value
Individuals in this sample with no known psychiatric diagnosis or treatment history demonstrated a significant relationship between depression and anxiety scores and quality of life.