فهرست مطالب علی موسوی

The investigation of alternative fuels, such as biodiesel, have been prompted by the detrimental emissions resulting from the combustion of fossil fuels. Undoubtedly, the primary concern in fuel selection lies in the examination of emissions. Hence, the present study aims to examine the performance and environmental life cycle assessment methodologies of a dual fuel diesel engine. Furthermore, a fuel blend is made by combining biodiesel sourced from sunflower oil with varying concentrations of bioethanol (3%, 5%, and 7%) and pure biogas, with a percentage ranging from 50% to 80%. This fuel blend is intended for use in the combustion process. In this study, a total of eight fuel samples were meticulously produced and subsequently examined, alongside diesel fuel which served as the control fuel. The entire life cycle evaluation encompasses several stages, starting with the manufacturing of inputs to the combustion of fuel samples. This includes the extraction of oil from sunflower seeds, the production of biodiesel and bioethanol, as well as the generation of natural gas produced from pure biogas. These processes are regarded as captivating and pioneering topics within the field. The provided samples underwent combustion within a dual fuel engine. The findings indicate that the B5 fuel sample, when combined with a 3% bioethanol additive, demonstrates superior engine performance and reduced exhaust emissions. Furthermore, enhanced conditions were achieved in terms of engine performance and exhaust emissions when operating at the lowest rate of natural gas fractionation, which was 50%. The findings of a thorough life cycle evaluation, which examines the entire process from farm to combustion, indicate that the blend B5E7, consisting of 50% natural gas portion at maximum engine load, demonstrates both environmental friendliness and appropriate performance characteristics.

With the start of the new corona virus pandemy in 2019 from the city of "Wuhan" in China and confirmation and warning of the Iranian Ministry of Health and Medical Education in February 2020 and considering the importance of timely laboratory diagnosis of the new corona virus, a number of Public and private laboratories gradually took responsibility for the molecular diagnosis of this virus. A review of the events of this era can reveal the strengths and weaknesses of the decisions and actions taken and the challenges of this path in the implementation phase from a supervisory point of view.

This study is a review based on the records and information available in the management of laboratories affairs of vice president of treatment of IUMS in connection with the supervision of the laboratories operating within the regulatory area of the said university within the period of March 2020 to the end of July 2022.  The obtained results have been examined in the areas of: testing license, laboratory supervision, data collection, handling of complaints and ethical challenges.

With the start and continuation of the Covid pandemy and the prediction of increase in the number of cases of the disease and the need to speeding up in the definite diagnosis of suspected Corona virus patients by using paraclinical services including laboratory, the Ministry of Health took actions to use the capacities of the private sector in addition to the public sector. In this way, the laboratories applying for participation in the molecular diagnosis program of the new corona virus entered the field after completing the process of obtaining a license, the framework of which was announced by the health ministry. Due to the fact that a significant number of laboratories with a Covid license are established within the regulatory area of Iran University of Medical Sciences (91 laboratories out of a total of 404 Covid laboratories in the country), the examination of the performance of these laboratories can be a reflection of the general situation of laboratories across the country, including the amount of services provided and the most important supervisory problems, including Quality control and interpretation of results, recording of unconformities and collection, storage and transfer of samples, etc.
Also, along with these issues, the importance and necessity of recording and collecting the laboratory diagnosis data of the Covid-19 disease and the problems related to it in this epidemic have been considered and investigated. Among the other important challenges of this era are complaints, the most of which is the involvement of unrelated people in the matter of taking samples for the Covid test and the inconsistency of the results obtained in different laboratories, etc.
Considering that the Covid pandemy still continues and improving the situation and solving the existing challenges can have a significant impact on the health of the people, it seems necessary to use the results of this study to solve the problems.

Studying the dynamic behavior of droplets is very important in electrowetting phenomena. Due to the widespread application of non-Newtonian fluids, especially in bio applications, in the present study, the dynamics of non-Newtonian Carreau droplets under the electrowetting phenomenon has been investigated. The effects of the viscosity, the size and the applied voltage on the oscillations and the change in the height of the droplets have been inspected. The simulations have been conducted using the Finite Element Method (FEM) and in order to validate the method, the results have been compared with the available experimental and numerical results. The results indicate that by increasing the viscosity the amplitude of the oscillations increases but the frequency remains constant. These are similar to those of the Newtonian fluids with this difference that in Newtonian fluids the amplitude is larger but the frequency is smaller. Also, for a Carreau fluids when the power index is smaller than one the results are similar to the Newtonian fluids but when the power index is larger than one the droplet reaches to its final height faster and without any fluctuation. Increasing the height in the non-Newtonian fluid leads to an increase in the amplitude of the oscillations and decreases the amount of frequency in the fluid, which is similar to the Newtonian fluid, with the difference that in the non-Newtonian fluid the amplitude is less but the frequency is higher.

The purpose of this study was to determine the effectiveness of life skills training (problem-solving and decision-making) on teacher-student relationships, academic buoyancy, and academic optimism in sixth grade elementary students. The method was quasi-experimental with pre/post-test and a control group. The statistical population was sixth-graders in Hasanabad city schools during the academic year of 2019-20. The sample consisted of 50 sixth grade male students who were assigned to the experimental or control group (25 students in each group). Assessment tools included standard questionnaires of teacher-student relationship quality, academic optimism, and academic buoyancy. Also, students who had much higher scores in buoyancy, optimism, and/or the quality of relationship with their teacher were excluded from the sample due to statistical reasons. The participants were educated in a problem-solving and decision-making training for ten sessions. Following the training, the post test was administered. Multivariate analysis of covariance (MANCOVA) was used to analyze the data. The results showed that the quality of teacher-student relationship, academic buoyancy and academic optimism were higher in the experimental group than those of the control group. As a result, problem-solving and decision-making trainings can be used as part of students’ empowerment programs.

AISI 430 ferritic stainless steel is used as interconnects in solid oxide fuel cells. In order to improve the corrosion resistance of this steel under operation conditions of solid oxide fuel cells, a protective and conductive coating layer on the interconnects can be used. In this research, AISI 430 ferritic stainless steel was coated with electrolytic with manganese, cobalt and cerium oxide under different density densities (400, 500, 600 and 700 mA/cm2). The coated specimens were studied by scanning electron microscopy (SEM) with X-ray diffraction spectroscopy (EDX). In order to investigate the corrosion behavior of the coatings, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) tests was used in aqueous NaCl solution of 3.5%. The results showed that with increasing the current density, the coating became even more uniform. The results of electrochemical polarization showed that the coating produced at a current density of 600 mA/cm2 has a better corrosion resistance (0.186 μA.cm-2) than the coatings produced at current density of 400 (2.06 μA.cm-2), 500 (1.767 μA.cm-2) and 700 (1.02 μA.cm-2). Also the results of electrochemical impedance spectroscopy showed that the capacity of coating produced at current density of 600 mA/cm2 (1.47E-4 Ω-1cm-2Sn) is lower in comparison with the coatings produced at current density of 400 mA/cm2 (2.5E-4 Ω-1cm-2Sn), 500 mA/cm2 (1.6E-4 Ω-1cm-2Sn) and 700 mA/cm2 (2.1E-4 Ω-1cm-2Sn) which indicating better corrosion resistance of produced coating at current density of 600 mA/cm2.

This research is conducted in order to develop transportation management methods based on limited resources to reduce social exclusion in rural areas, (Case Study: Ilam city). The research population consisted of all villages in Ilam city and also the chairmen of councils or village administrators and experts on the subject of rural transport research of which the 3 expert in the sector allocation of resources were used.. The research method is descriptive in nature, and survey in terms of applicable methods. Questionnaire was considered to be the data collection tool and to analyze the data, the descriptive statistics (mean, median, standard deviation) and inferential statistics (correlation, regression analysis, path analysis) were done using the software Excel and Lingo. The results show that with the development of credit obtained 65% assigned by assuming that spending rural transport, can only be used between 25 holistic village 12 statistical research village (model output) has been implemented and the rest will be postponed to future years.

Phosphorus (P) is one of the essential elements for plant growth, which is considered as one of the potential sources of water pollution due to its excessive use as chemical fertilizers, and also due to discharge of municipal and industrial wastewater into water resources. P has high spatial and temporal variations because of the affecting factors, including rainfall intensity, land use, slope, and soil erosion. The aim of this study was to investigate the temporal variations of phosphorus pollution at various regions along Siahroud river, located in Guilan province. The study has been conducted in Siahroud watershed of Rasht with different land uses including forest (Jokolbandan and Saravan regions) as well as agricultural (Jokolbandan region), industrial (Saravan and University regions), and urban area (Gil and Golsar regions). Water samples were collected from the various regions of the river with different land uses during ten months. The contents of total, dissolved and suspended solids, along with total, soluble and particulate P were measured in water samples. Total P was measured by potassium persulfate digestion method. Nitrogen content was also determined according to Kjeldahl method in the samples taken on December, January, February and March. Results showed higher level of P pollution in the urban (Golsar with the value of 0.261 mg.L-1) and industrial regions compared to other regions of the river. In the winter, most of soluble P discharge was observed from the agricultural areas, while it revealed higher discharges from the urban areas in the summer. The maximum P pollution (0.296 mg.L-1) was related to the Golsar region. In addition, the high rate of total P in Jokolbandan (0.188 mg.L-1) can be due to the destruction of forest and the slope steepness of this region. Most of the solid particles discharged from the watershed were also in the form of suspended solids (annual average, 503 mg.L-1). The results of the mean comparison showed that there was a significant difference in the spatial variations of the concentration of various forms of P including total, soluble and particulate P, and the highest amount of P was observed at the end of the river. Furthermore, the results showed that there was no significant difference between soluble and particulate P in the study area, while a power relationship was observed between soluble P and soluble solids (R2=0.541). Results demonstrated that the output of P in various forms is a function of time. In general, the rate of P pollution was increased from the upstream to the downstream and showed high temporal variations. While soil erosion was recognized as the reason for high levels of P pollution in agriculture regions such as Sangar in rainy season, the discharge of municipal and industrial wastewater into the river was the reason for P pollution in the urban areas. Therefore, control of soil erosion in agricultural lands and prevention of wastewater discharge of municipal and industrial into the river could reduce effectively P pollution.

Knowledge Translation is the process by which knowledge is transferred from the useless to the practice field. This study aimed to assess the state of knowledge translation among scholars in the humanities are accomplished. This study is a survey research - analytical tools used by the questionnaire were made based on knowledge translation model of disability and rehabilitation research, the U.S. National Institute designed and content and face validity as it has been measured. The present population is all the members of humanities departments across the country from different disciplines.
Finding: The finding of this study showed that 8/61% of the members of the faculty of humanities research Origin Ks hvrvzyt, 6/56% of the content of their research, 3/66% of his field of study, 3/46% of his environment communication and 9/58% of their status in humanities knowledge translation has been assessed as moderate, and 4/73% of them have a poor general state of knowledge translation in humanities gained. According to the humanities faculty of humanities of the visible products is that products are not visible to the human sciences. The idea for those who produce and transmit knowledge in the human sciences have a major role reflects the importance of knowledge translation in humanities. Humanities principle, despite a major role in changing the mind, the psyche and behavior of individuals when the practical issues are isolated. The isolation of the human sciences that are, irreversible damage to the inner hull makes the community. Psychological and social damage caused social Bysazmany and to continuously challenge the core values of their society.