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Showing 145 results for Sheikh


Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract

Despite the growing attention given to language teacher immunity in the recent years, scant research has focused on how supervisory classroom observation affects teacher immunity through the framework of complexity theory. To address this gap, the current study intended to shed more light on the process of supervisory classroom observation and how it contributes to second language teacher immunity, either productively or maladaptively. To this end, 10 English as a Foreign Language (EFL) teachers were recruited and the data were collected through narrative frames and semi-structured interviews. The findings indicated that the observer’s presence and the entire observation process instigated excessive stress among the teachers and affected the teachers’ self-efficacy, creativity, and motivation; while the post-observation conferences between the teachers and the observers had a positive influence on the immunity development of the teachers. Implications for the stakeholders including the policy makers, institute managers and the observers are provided in the conclusion section of the study.
 

Volume 0, Issue 0 (ARTICLES IN PRESS 2024)
Abstract

The sugar beet moth, Scrobipalpa ocellatella (Boyd) (Lepidoptera: Gelechiidae) is one of the most serious threats to sugar beet cultivation worldwide causing economically significant yield loss. The life table parameters of S. ocellatella were determined on eight sugar beet cultivars (Dorothea, Ekbatan, Merak, Palma, Rozier, SBSI 007, Sharif and Shokoofa) under laboratory conditions at 25±1oC, 60±5% RH and 16:8 h (L:D) photoperiod. The longest (15.29 days) and shortest (7.61 days) female longevity was recorded on Shokoofa, and Merak cultivars, respectively. At the same time, Shokoofa and Merak cultivars had the highest and lowest total fecundity (85.26 eggs/female) and (32.39 eggs/female), respectively. The net reproductive rate (R0) varied from 9.31 eggs/individual to 39.44 eggs/individual on eight sugar beet cultivars; the lowest value was on Merak and the highest value was on Shokoofa. The highest intrinsic rate of increase (r) (0.102 d-1) and finite rate of increase (λ) (1.107 d-1) were on the Shokoofa cultivar. The results showed that all life table parameters of S. ocellatella were significantly different on the sugar beet cultivars tested. According to the conducted laboratory experiments, Merak was the most resistant cultivar to S. ocellatella compared with the other cultivars tested.


Volume 0, Issue 0 (ARTICLES IN PRESS 2024)
Abstract

The challenge of water scarcity poses a significant environmental challenge for the agricultural sector, jeopardizing the sustainable production of vital crops like wheat. Iranian provinces that produce wheat have varying water resources and climatic conditions. These differences have resulted in distinct economic benefits and environmental risks in wheat production among the provinces. In this study, the water footprint of wheat in each province was calculated from 2000 to 2020, and its environmental costs were deducted from the gross margin. Consequently, the social benefit was considered as the return of the wheat production portfolio in each province to manage the risk of sustainable production. Subsequently, the portfolio theory was employed through quadratic mathematical programming to minimize the social benefit-risk and determine the proportion of wheat cultivation in each province for optimal portfolio and sustainable production. The results showed that the provinces of Khuzestan (21.6%), Fars (17.1%), Hamedan (16.1%), Kurdestan (13.2%), Khorasan Razavi (11.4%), Golestan (11.3%), Qazvin (5%), and Kermanshah (4.3%) are in the optimal portfolio. In the optimal portfolio, a significant share of wheat production was related to the provinces with low risk in production (Khuzestan and Fars). The findings suggest that it is necessary to consider economic risks along with environmental risks to achieve sustainable production in the long run. As a result, the eastern and central provinces (Sistan and Baluchestan, South Khorasan, Semnan, Isfahan, Yazd) with the highest water footprint were removed from the optimal portfolio, and the western provinces with higher gross margin and lower water footprint were replaced with a larger share (Kermanshah, Hamedan, and Kurdistan).

 

Volume 1, Issue 1 (3-2012)
Abstract

Subterranean termites are one of the most important pests of buildings, historic monuments and agricultural crops in some parts of Iran. Using entomopathogenic fungi as microbial insecticides is usually a part of biological control and insect pest management. The pathogenicity of entomopathogenic fungus, Metarhizium anisopliae (Metschnikoff) Sorokin (DEMI 001) isolated from Rhynchophorus ferrugineus (Oliver) was compared against two subterranean termites, Amitermes vilis (Hagen) and Microcerotermes gabrielis (Weidner) under laboratory conditions. Suspensions of the fungus spores at five concentrations of 101, 102, 103, 104, 106 spores ml-1 were prepared to define LC50 and LT50. To determine LC50 and LT50 of M. anisopliae, bioassays were carried out on worker casts of both termite species. LC50 values for A. vilis and M. gabrielis were 8.5 × 103 and 0.2 × 102 spores ml-1, respectively. LT50 value for M. gabrielis was shorter than that of A. vilis at all five concentrations tested. According to the results of the bioassay, M. anisopliae was more effective for controlling M. gabrielis than that for A. vilis.

Volume 2, Issue 1 (Spring 2018)
Abstract

Rubber to metal adhesion in rubber to metal parts is of great importance. The optimum performance of this type of adhesion depends on the adhesion strength between rubber compound and metal surface and the consolidation of the compound. Resin additives and the presence of silica particles play a different role in adhesion improvement. Peel90 tensile strength and adhesion tests have been used to evaluate the effect of additives. According to the results, the presence of 15 phr of phenol formaldehyde resin has been coused to increase rubber to metal adhesion up to 17% but a reduction of 43% in the tensile strength of compound. On the other hand, it was observed that the presence of 15 phr HMMM resin along with phenol formaldehyde resin not only could improve rubber to metal adhesion up to 137%, but also decreased the loss of tensile strength of the rubber mixture to 12%. This is while the addition of 5 phr aerosol along with these resins could increase the adhesion to 175%. In this state, tensile properties have only drop out 3%.


Volume 2, Issue 3 (9-2013)
Abstract

The rose sawfly, Arge rosae Linnaeus, is one of the most destructive pests of rose bushes in the north of Iran. Nowadays, many attempts have been made to reduce pesticide application by looking for new methods of pest control. A non chemical method for controlling insect pests including A. rosae can be achieved by using genetically engineered plants expressing carbohydrase inhibitors. Therefore, in present study we characterized biochemical properties of digestive carbohydrases in the gut of A. rosae for achieving a new method for control of this pest. The specific activity of α-amylase in the digestive system of last larval instars of A. rosae was obtained as 9.46 ± 0.06 μmol min-1 mg-1 protein. Also, the optimal pH and temperature for α-amylase were found to be at pH 8 and 50 °C. As calculated from Lineweaver-Burk plots, the Km and Vmaxvalues for α-amylase were 0.82 mg/ml and 7.32 µmol min-1 mg-1 protein, respectively, when starch was used as substrate. The effects of ions on amylolytic activity showed that Mg2+ and Na+ significantly increased amylase activity, whereas SDS and EDTA decreased the enzyme activity. The highest activities of α-/β-glucosidase and β-galactosidase were obtained at pH 5.0. By the native PAGE, three, one, one and two bands were clearly detected for α-amylase, α-/β-glucosidase and β-galactosidase, respectively. No bands were found for α-galactosidase that confirmed the absence or low activity of this carbohydrate in the digestive system of A. rosae. These results could provide the knowledge needed to produce transgenic plants for control of this pest.  
Md. Samsur Rahman, Ibrahim Khalil Al Haidar, Amit Kumer Neogi, Md. Ashraf Ul Hasan, Md. Mizanur Rahman, Sheikh Muhammad Shaburul Imam,
Volume 2, Issue 3 (9-2016)
Abstract

During the study of butterflies of Bangladesh (Insecta: Lepidoptera) which carried out since June 2014 to March 2016, several expeditions were made by the authors in the different areas of Bangladesh and many butterfly species were collected and identified. Among them, five species namely, Zezius chrysomallus Hübner, 1823, Rapala tara de Niceville, 1988, Cethosia biblis Fruhstorfer, 1912 and Atrophaneura coon Fabricius, 1793, Cephren estrichopepla Lowe, 1908; and one subspecies, Pelopidas subochracea subochracea Moore, 1878 are newly reported for the fauna of Bangladesh and their distribution data are presented. This study was achieved with an aim to update the checklist of butterflies of Bangladesh. The previous sampling gaps in some areas of Bangladesh indicated by these newly reported species which may put forward further investigations on the butterflies of this country.

Volume 2, Issue 4 (12-2013)
Abstract

The potato tuber moth (PTM), Phthorimaea operculella (Zeller) is one of the important pests of potato in tropical regions. In this research, the toxicity of two insecticides, abamectin and deltamethrin on P. operculella was studied at 26 ± 1 C°, 65 ± 5% RH and photoperiod of 16:8 h (L: D). The concentrations were determined by preliminary dose setting experiments. Distilled water was used as control. LC50 values for egg, first instar larvae and adult stages in abamectin were 0.92, 0.014 and 0.46 mg ai/l and in deltamethrin were 0.09, 0.024 and 0.29 mg ai/l, respectively. The sublethal effects of abamectin and deltamethrin on population growth parameters of P. operculella were determined at mentioned conditions. Four hundred 1 day old eggs of the pest were dipped in insecticides solutions (LC30). After egg hatching, the first instar larvae were transferred on potato tubers and placed in transparent plastic dishes. After adults' emergence, 20 females were used for each treatment in life table experiments. In control, abamectin and deltamethrin treatments intrinsic rates of increase were estimated to be 0.060, 0.042 and 0.141 day-1, respectively. Statistical analyses showed that deltamethrin had the higher toxicity to egg and adult stages of PTM and abamectin had the higher toxicity to its first instar larvae. Since deltamethrin increased the stable population parameters of P. operculella specially its intrinsic rate of increase, thus it might not be recommended for control of PTM. However based on lethal and sublethal effects, abamectin could be suitable for management of this pest.

Volume 2, Issue 4 (winter 2021)
Abstract

Problem statement: In fact, urban streets as the most important part of the urban landscape structure, reflect the values ​​and socio-cultural relations of citizens and can well facilitate or influence the possibility of living in the city and social interactions. Therefore, moving towards vibrant urban spaces is even more necessary in cities, despite the dynamic and human-centered public spaces that provide the ground for the active presence of human beings in the environment. Aim: The purpose of this study is to evaluate the role of humanistic urban landscape in the vitality of Tabriz city streets from the perspective of citizens.
Methods: The research is descriptive-analytical with an applied purpose. Snowball method was used to determine the sample size. SPSS software and ANP method were used to analyze the data. Results: The results obtained from the final analysis of selected research spaces based on humanistic landscape components and quality of life show that the range of Shariati to Ghonga intersection with a normal weight of 0.498 is more consistent with the extracted qualities.
Conclusion: The final results of the weights showed that the highest average goes back to the criterion of biological urban elements and the views of the streets of Tabriz affect the perception of citizens and their interpretation and reading of the environment. Also, the results obtained from the final analysis of the selected spaces of the research based on the components of humanistic perspective and quality of vitality, are more in line with the extracted qualities.
 

Volume 3, Issue 2 (No.2 (Tome 6)- 2015)
Abstract

One goal of comparative studies of literature is to search for the human “truth” that has appeared as archetypes in the literature of all nations and all times. In this paper, the author draws an archetypal comparison of romantic love in the French story of "Tristan and Iseult" and the Iranian epic romance "Samak-e-‘Ayyar". It starts with explaining the Jungian concepts of mother and father archetypes, anima and animus, conscious and unconscious, as well as collective conscious and unconscious. Since individuation process in the Jungian psychology has to do with the connection between the conscious and unconscious, the tale romantic love could be seen as individuation process in which each lover seeks to connect to his/her anima (feminine unconscious) and animus (masculine unconscious), based on his/her gender. After providing a synopsis of each story, the author explains the archetypal roles and symbolic meanings of kings, queens, heroes, witches, and princesses in each story using Marie-Louise Von Franz’s methodology for the interpretations of fairy tales. It then compares romantic love in each story by analyzing its characters, functions, and events, and explaining its similarities and differences. Since archetypal literary analysis reveals the attitude, outlook, and behaviors of the people that the myths are originated among them, this comparative study aims to answer to a rather broad question: How is it that in the French story of the 12th century, romantic love ends with death and tragedy; however, in the pre-Islamic Iranian tale, it ends with the :union: of lovers?  

Volume 3, Issue 2 (6-2015)
Abstract

Water erosion causes a series of on-site as well as off-site damages and problems on natural ecosystem. These damages include soil and nutrient loss and finally loss of productivity which causes costs to the society. So, this study attempts to quantify the economic value of soil productivity conservation as one of the important functions of rangelands vegetation and its economic cost by productivity losses. The soil loss amounts were obtained from integrated Geographic Information System (GIS) and map of erosion vulnerable areas using RUSLE model. Supplementary data such as soil nutrients (NPK) valuated from the measurement plots of a portable rainfall simulator (E65). Field plots were constructed to measure soil nutrients and soil loss from different soil types with different resistance to erosion. Rainfall simulation was carried out in three sites on the basis of geology map and different resistance to erosion. Nine experimental unit plots (1*1 m) were used to correlate nutrient loss to sediment losses. Assuming that nutrient loss by erosion could be replaced by fertilizers, economic cost of major nutrients estimated by market prices of fertilizers. Results showed that mean annual soil loss using RUSLE was 27.44 t ha-1 y-1 ranging from 0.0 to 996.06 t ha-1 y-1. Also, 114.17 kg ha-1 y-1 of N, P, K elements were lost in 2010 due to soil erosion in the degraded rangelands which costs (738944 Rial) 71.5 US$ ha-1y-1. Total economic cost of soil nutrient loss in 94978.6 ha of the rangelands of Nour-rud watershed basin, was estimated 70×10^9 Rial (6.8×106 US$). The maximum annual cost of soil nutrient loss was estimated in the "TRujs" geological formation (1.23×106 US$) consisting of "gray shale, silt, sandstone, conglomerate" and the least cost belonged to the "Jl1" geological formation (0.916*106 US$) which consists of "thin gray dolomite limestone". In economic terms there was a direct relationship between soil nutrient loss and its economic cost.

Volume 4, Issue 1 (9-2016)
Abstract

Semar Al-Gholoob is a book in Arabic word and the addition and possessive and names attributed that the covenant Saalabi Neyshabouri, early fifth century AD, the Arabic language has spread. With regard to cultural and linguistic background of the trade that exists between Persian and Arabic, manifestations of culture, language and some elements of historical references to Iran and the Persian language are reflected in this work. In the present study, to investigate the reflection of the Persian language and Iranian culture also been applied in the Semar al-Gholoob that they are categorized of four of places, social-cultural issues, characteristic of regions and areas, historical references and language issues. The method described in this paper, descriptive and analytical. The main research question is Persian words in Arabic are involved and influential cultural structures that are available in Semar al-Gholoob, to which one of the dimensions of Persian and Iranian community life is concerned? Our hypothesis is that the effects of the Persian language, mostly related to the area of urban life and faith are the kingdom and governance that was lacking tribal way of Arab life and the Bedouins. Mention place names, foods, wearable, products and special features that a city or region is also ranked.  

Volume 4, Issue 2 (6-2016)
Abstract

The runoff generation and soil erosion in the Kechik Watershed, Golestan Province, was assessed, using a designed and constructed portable rainfall simulator. Treatments were applied on different land-uses, slopes and aspects as the most influential factors. Results showed that land-use significantly affected runoff generation (13.35 l, 6.9 l, and 4.12 l, respectively for agriculture, forest and rangeland uses), however slope (7.7 l for Class I; 9.23 l for Class II) and aspect (8.52 l for the northern aspects; 8.32 l for the southern aspects) did not have significant influence. All factors, significantly altered sediment concentration (Agriculture 9.6 g l-1, forest 8.24 g l-1, and rangeland 5.26 g l-1; slope class I 6.6 g l-1 and slope class II 8.7 g l-1; northern aspect 8.7 g l-1, and southern aspect 6.9 g l-1). Agricultural fields generated the highest runoff and sediment under simulated rainfalls. Rangeland and forest did not have significant runoff generation and sediment concentration. Results showed that land-use management, especially in terms of agriculture, could not only hamper current erosion, but reduced further advancement of this encroaching phenomenon.

Volume 4, Issue 3 (9-2016)
Abstract

This study tries to make a distinction between factors affecting adopters and non-adopters of domestic rainwater harvesting (DRWH) in Golestan Province, Iran. In order to better comprehend the differences, nine dimensions were considered in this study, including (1) social background (including respondents’ demographics, water sources, issues in accessing water sources, primary awareness of the DRWH systems, information communication channels, and their dwellings characteristics), (2) economic and financial scale (including construction, maintenance, investment rate of return), (3) scale (including law and regulation) (4) social scale (effect of social determiners on person’s decision making), (5) compliance with every day’s needs,(6) past experience, (7) image (importance of adopting DRWH systems on person’s social image and position), (8) providence (person’s outlook of the future), and (9) risk adoption. Results show that the surveyed groups vary remarkably in terms of considered dimensions. It seems that lack of experience and observation are the underlying reason of low adoption rate in this area.

Volume 4, Issue 4 (12-2016)
Abstract

The optimal cropping pattern for Sistan water resources management was determined through a goal programming technique within the GAMS programming environment. Results showed that the optimum cultivation area and net profit of the agricultural sector in the Sistan region could increase up to 18.1 and 39.8%, respectively, compared to the current status. An increase in the farm irrigation efficiency from the current 35 to 55% would increase the net profit of the agricultural sector by 49.7% despite 6.4% reduction in water consumption. At the same time, 20% increase in the efficiency of water delivery system to farmlands would lead to 8.2 and 17.2% increases in the cultivation area and net profit, respectively. The results of combining these two management scenarios indicated that farming net profit would increase by 64.3%, while total water consumption in agricultural sector would decrease by 2.3%. Under wet condition, cultivated area and net profit would respectively increase about 32 and 44%. However, upon drought years, the cultivated area and net profit would experience 86.9 and 87.3% loss, respectively.

Volume 4, Issue 5 (Supplementary Issue - 2015)
Abstract

This study was conducted to investigate commercial formulations of insecticides against western flower thrips, Frankliniella occidentalis (Pergande).The insects were collected from commercial greenhouses of cucumber in Varamin, Iran. The tested insecticides were diazinon (EC 60%), cypermethrin (EC 40%), fipronil (EC 2.5%), imidacloprid (SC 35%) and a botanical insecticide oxymatrine (Kingbo, AS 0.6%). Fipronil had the highest efficacy among all tested insecticides (LC50 = 17.97 ppm). However, imidacloprid had the lowest efficacy (LC50 = 2303 ppm). The oxymatrine was effective (LC50 = 69.94 ppm) after fipronil.

Volume 5, Issue 1 (3-2017)
Abstract

The optimal allocation of the Chahnimeh water resources among different sectors, viz. domestic, agricultural and environmental consumptions, was determined using the goal programming method in GAMS, based on the present condition in the area. Results showed an increase of 15.4, 44.5 and 230% in allocation of water to domestic, agriculture and environment sectors, respectively, in this method as compared to the present allocation. Besides, implementation of the second water transferring line to Zahedan city would resultin a 66% increase in the water transferring rate to this city without any change in water supply for domestic sector in Zabol city and the surrounding villages. The scenario of 20% reduction in water per capita consumption led to about 5.9 million cubic meters saving in water supply from Chahnimeh reservoirs to the domestic sector. According to the projected population growth for 2025 in the study area, water consumption in domestic sector will increase by 15.9%. Results showed that the goal programming can be applied as a useful tool to analyze the effect of different scenarios on water demand and supply management and, hence, to allocate water for different sectors in a most appropriate way.
Raveendran K.p. Hanima, Puthuvayi Girish Kumar, Pavittu Meethal Sureshan, Altaf Hussain Sheikh,
Volume 5, Issue 2 (6-2019)
Abstract

A new species of tiphiid wasp, namely, Tiphia kashmirensis Hanima & Girish Kumar sp. nov. is described from Kashmir, India. Male of Tiphia khasiana is described for the first time. Key to species of Tiphia from the Indian subcontinent of Allen (1975) is modified here to accommodate the new species and male of T. khasiana.

Volume 5, Issue 3 (2015 2015)
Abstract

One of the most important aspects of presence of citizens in urban spaces, that enhances their vitality and their effective social roles, is “moving on foot”. Nowadays, in many urban spaces, motion of a large number of citizens, who like to walk here and there in the cities, is affected by various factors. Dissatisfaction of pedestrians due to the limitation of urban spaces has a relationship with the violation of their rights. Citizenship rights, is one of the issues to be considered in Islam and is highly encouraged in respecting human values. A citizen, is an official member of a city, state or country and because of that, there are rights and responsibilities for him/her that have been assigned in law. In fact, citizenship right is a combination of duties and responsibilities of citizens in relation to each other, to the local and to the national government. In Islam, the rights and responsibilities that are known as the citizens’ rights are indigenous with the laws and regulations that have been known and assigned as Islamic human rights. These rights that must be strongly respected by Muslims, include civil, human, social, political, cultural and judicial rights. By studying some samples of justice in the Holy Qur’an, one can notice that “justice” involves all the issues which related to human beings. Some of the meanings of justice in Qur›an which have connection with citizenship rights in Muslim community include: placing everything in their right places, proper and accurate application of everything, respect for individual rights and the prevention of injury and trespassing, saving and prevention extremes, equality with other people and prevention and prohibition of superiority. Prophet Mohammad (peace be upon him) also mentioned justice as a factor for protecting and defending human beings’ right. He emphasized justice as the main criterion for all individual, social, moral, material, physical, spiritual, political and non-political rights. In this article, citizenship right is discussed from the perspective of justice in Islam. Justice is an important factor in the formation of the Islamic city. City is a complex structure that in every moment is influenced by three factors, «body or the built form», «population» and «social relations». So, establishment of justice in Islamic city is the function of (1) establishment of justice in the physical framework of a city, (2)fairly citizens use of urban facilities, (3) establishment of justice regarding to the citizens’ cultural aspects and issues (4) establishment of justice in the behavior of citizens with the physical framework of the city. The balance of the city framework, justice in the rational provision and distribution of municipal facilities, with access to the city authorities, fighting against oppression, good placement of urban facilities and their proximity and accessibility are all the signs of justice in urban scale. But in small-scale there are principles that following them, shows the importance of respecting pedestrians› rights and social justice, such as respect for human worth and dignity, good proportionality between dimensions of space and the characteristics of mental and physical organism of the human body, making the relationship between nature and human, and respect for other people, “La zarar va La zerar rule in Islam”, individual privacy, creating visual beauty and many other issue of these kinds. This study sought to evaluate the impact of these factors in violation of the rights of pedestrians, in the study area (intersection of Jalal Ale Ahmad and Chamran Highway to Kargar-e-shomali Street and Fatemi Intersection) as one of the areas with high pedestrian traffic. The statistical population of this study are the pedestrians who use these paths (the study area) at different times of the day and night. Research methodology is analytical-explanatory and based on field study. So on the basis of pedestrians and authorities views that was found through the researchand the principles of justice in Islam in relation to citizenship rights, six sets of criteria for the analysis citizenship rights of pedestrianscan be defined: Continuity, short distances, beauty, security, safety and comfort.A hierarchical model which intends to determine and analyze the factors that affect the rights of pedestrians in the study area has been used as well as “Expert Choice” software to evaluate the model. The results were obtained for the measures, on the basis of priority including security, safety, short distances, comfort, continuity and beauty. This means that in the study area, security had the greater role on the rights of pedestrians, and beauty has the least importance than others. On the basis of the principles of justice in Islam in relation to rights of citizens and with the issues which obtained in technical studies and expert opinions, the criteria which can affect pedestrian rights were found. For analysis of data, Analytic Hierarchy Process (AHP) technique, and for the importance of options, a questionnaire have been used. “Delphi Method” was also used to evaluate the importance of the criteria and sub criteria. AHP, according to its special features in the issues related to urban planning is a useful and desirable application. It is useful because it prepared a context for analysis and conversion of complex issues to a logical and simple hierarchy, thus planners can evaluate options with criteria and sub criteria. In addition, it also helps in analyzing the compatibility review in judgments. Given that most issues in urban planning and design can be studied through qualitative and quantitative indicators, the possibility of simultaneous use of both qualitative and quantitative criteria in AHP method made it a powerful tool for analyzing urban issues. Flexibility, ease of calculation and the possibility of final rankings also are other advantages of AHP method which can help in the investigation of Issues in urban planning. So, citizenship rights as a manifestation of the principle of justice in the Muslim community should be considered in Islamic cities. The results of the research show that urban management is the most important factor in relation with violation and defense of pedestrians’ rights. Other factors are: the way people behave in adjacent spaces, the behavior of the owners of vehicles and the behavior of other users at the urban spaces. Security is also the most important factor for pedestrians, the lack of it, is a type of violation of their rights. The current problematic situation of pedestrians’ rights is the result of years’ lack of planning and implementing the rights of individuals to neglect issues of implementation of the management system, but the planners and designers can enhance the present situation through a integrated comprehensive and coordinated planning. This program should be associated with all aspects of planning, design and management of the system. Thus, the crucial role of urban management in connection with the rights of pedestrians in designing new cities, in regularization of towns, in allocating of funds for the reconstruction and rehabilitation of urban road networks and the regulation of urban laws (like appropriate legislation and ordinances to bring about the changes in the culture of citizens who are either walking or riding in urban spaces), as the main tools for managing short and average trips within the city, and the most appropriate manner, must have the highest priority.

Volume 5, Issue 3 (summer 2020)
Abstract

Aim: Ergonomic risk factors are one of the main factors in the occurrence of Work-related Musculoskeletal Disorders (WMSDs). The serviceman workers are exposed to various health and safety risk factors during their activities. This study aimed to assess the risk of musculoskeletal disorders in serviceman workers of a Petrochemical company.
Method and Instruments: In this descriptive cross sectional study, first, the posture of 106 serviceman workers were assessed using REBA method. Then, the prevalence of WMSDs symptom was investigated using Nordic Questionnaire (NQ). The collected data were analyzed by SPSS software using statistical Chi-square test.
Findings: Rapid Entire Body Assessment (REBA) score for serviceman workers involved in insulation, electrical and Instrumentation related work was 11, 12 and 13 (high risk) respectively. The highest prevalence of musculoskeletal disorders was reported in the lower back and knees. Significant relationship (p <0. 05) was observed between work experience and disorders symptom in knee.
Conclusion: This study showed high prevalence of WMSDs symptom in study population, especially in their waist and knee. Moreover, it was indicated that the working conditions of serviceman workers needs to be improved. Training the workers to identify the risk factors and use proper ergonomic principles and procedures is recommended.


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