Hadi Abedi - Academia.edu (original) (raw)
Papers by Hadi Abedi
Energy Conversion and Management, 2020
Process of biodiesel production integrated with glycerol steam reforming process, solid oxide fue... more Process of biodiesel production integrated with glycerol steam reforming process, solid oxide fuel cell power plant, and also the organic Rankine cycle for the simultaneous production of biodiesel and electricity is investigated. In the biodiesel production scenario, biodiesel is obtained from waste cooking oil using acid catalyst coupled with hexane extraction. The glycerol obtained from the above method is subjected to steam reforming process to produce hydrogen. The hydrogen produced is then used as fuel in the solid oxide fuel cell to provide thermal and electrical energy for biodiesel production and reforming processes. In addition, generating extra power will allow biodiesel production to be more economical by injecting it into the electricity network. It also provides the heat duty of organic Rankine cycle. Sensitivity analysis is accomplished on the proposed model to indicate the effects of several parameters on the biodiesel production, glycerol production, power generation, and process efficiency. This study showed that with increasing oil flow rate, total generated power in SOFC, SOFC cycle efficiency, input flow to fuel cell and cell number decreased. Also, with increasing the fuel utilization coefficient, electrical efficiency, cell number, total output power from SOFC and overall thermal efficiency increased. The effect of inlet heat to distillation towers on parameters such as overall thermal efficiency and electrical efficiency and total generated power was also investigated. As main results, solid oxide fuel cell efficiency, Electrical efficiency, and overall thermal efficiency based on LHV are 25.09%, 28.14%, and 85.16%, respectively. Overall, developing a biodiesel production plant by upgrading glycerol to hydrogen through steam reforming and using hydrogen produced in solid oxide fuel cell and employing organic Rankine cycle to generate power is an attractive strategy to make biodiesel production cycles more economical.
Recent research has been conducted for measuring modernism and the effect of using internet stati... more Recent research has been conducted for measuring modernism and the effect of using internet statistical population of the research is including 7935 persons (all high school and pre-university students from Darab town). Sample size that has been measured by the formula of Cochran's sampling is equal to 3there is no meaningful relation ones including 178 girls and 188 boys and the method of sampling is a randomly multiple-stage cluster one. Research method is correlativedescriptive in the form of measuring. That instrument of gathering data is also a standard questionnaire. For analyzing data, statistical methods of person correlation coefficient, two independent groups of t-test, regression analysis, factor analysis and path analysis are applied. The results of research show that there is a meaningful relation modernism and the tendency to critical thought, ability of sympathy and between age and modernism. But there is no meaningful relation among rationality and democracy orie...
Journal of Language and Education
Background: The link between context and identity is of paramount importance to language teaching... more Background: The link between context and identity is of paramount importance to language teaching and learning. Yet, less attention has been paid to the identity aspects in various EFL contexts. Purpose: This study examined the identity aspects of EFL learners attending both public and private English language classes through self-reflection.Method: In this mixed-methods design, 128 conveniently chosen EFL learners, including both genders, responded to the Identity Aspects Questionnaire, and 23 of those participants were invited to a follow-up semi-structured interview to triangulate the questionnaire data. The study conducted Paired Samples T-Test for quantitative data, whereas qualitative data underwent thematic analysis to extract and codify the themes.Results: The results revealed no significant differences for personal and relational identity aspects over these two EFL contexts, while collective and social ones reached differences. The qualitative data indicated that the EFL le...
Journal of Alloys and Compounds
Abstract Nowadays, the development of cost-effective and high-performance electrocatalysts toward... more Abstract Nowadays, the development of cost-effective and high-performance electrocatalysts towards Oxygen Reduction Reaction (ORR) has attracted great and increasing interest. In spite of the fact that layered double hydroxides (LDHs) have been rarely investigated towards ORR, the considerable issues of low electronic conductivity and self-aggregation of LDHs are not well addressed, which presumably lead to remarkable restrictions on mass transfer. In the present work, nitrogen and sulfur doped reduced graphene oxide (N,S-rGO) with different concentrations are incorporated for the first time into the Cobalt-Magnesium-Nickel LDH (CoMnNi-LDH) structure to improve the ORR efficiency and electrocatalytic activity. Overall, seven electrocatalysts including Graphene Oxide (GO), N,S–rGO, CoMnNi-LDH and its combination with GO and N,S–rGO with different concentrations are fabricated in this work. For assessment of the morphology and structural properties, the synthesized catalysts were characterized by FESEM, TEM, XPS, XRD, EDX, FTIR and Raman techniques. Also, in order to assess the ORR activity and durability, the electrochemical measurements (CV, LSV and chronoamperometric) are carried out for all samples. Based on the obtained results, the best ORR activity is related to the CoMnNi-LDH/ 15 wt% N,S–rGO electrocatalyst. This result proves that the addition of N,S–rGO to the CoMnNi-LDH with appropriate concentrations can significantly increase the electrocatalytic activity for ORR due to the synergy and strong interaction between them. The onset potential and electron transferred number (nM) of this catalyst are obtained to be -0.04 V vs Ag/AgCl and 3.65, respectively, which it is close to the 4e- pathway for the ORR. Finally, the electrocatalytic activity of prepared electrocatalysts is compared to the commercial %20 Pt/C catalyst. The new reported approach of introducing N,S–rGO support coupled with LDH electrocatalysts provides a novel opportunity to the develop cost-effective and durable electrocatalyst for fuel cell technology.
Journal of Language and Education
Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This ... more Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This investigation examined the trilinguals' identity synergism by drawing on their linguistic repertoire and discursive identity through pragmatic skills. For this purpose, twenty advanced EFL learners with Persian and Turkish as their mother tongues were homogenized through IELTS and played roles in Persian, Turkish, and English languages. For modeling, three monolingual native speakers of the English language responded to the English version of written discourse completion tests taken from the same role-plays. The data underwent content analysis to extract and codify the themes. The results revealed a synergy among the trilinguals' discursive systems when performing apology, complaint, refusal, and request speech acts. Multidirectional transfers among the trilinguals' Turkish, Persian, and English languages developed a form of English communication that was different from that ...
Journal of Language & Education , 2020
Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This ... more Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This investigation examined the trilinguals' identity synergism by drawing on their linguistic repertoire and discursive identity through pragmatic skills. For this purpose, twenty advanced EFL learners with Persian and Turkish as their mother tongues were homogenized through IELTS and played roles in Persian, Turkish, and English languages. For modeling, three monolingual native speakers of the English language responded to the English version of written discourse completion tests taken from the same role-plays. The data underwent content analysis to extract and codify the themes. The results revealed a synergy among the trilinguals' discursive systems when performing apology, complaint, refusal, and request speech acts. Multidirectional transfers among the trilinguals' Turkish, Persian, and English languages developed a form of English communication that was different from that of the native speakers' model. Gestures and mimes were the non-verbal strategies employed more in the trilinguals' Turkish and English languages than their Persian. This study helps researchers and teachers gain insight into identity, pragmatics, and multilingualism.
Energy Conversion and Management, 2020
Process of biodiesel production integrated with glycerol steam reforming process, solid oxide fue... more Process of biodiesel production integrated with glycerol steam reforming process, solid oxide fuel cell power plant, and also the organic Rankine cycle for the simultaneous production of biodiesel and electricity is investigated. In the biodiesel production scenario, biodiesel is obtained from waste cooking oil using acid catalyst coupled with hexane extraction. The glycerol obtained from the above method is subjected to steam reforming process to produce hydrogen. The hydrogen produced is then used as fuel in the solid oxide fuel cell to provide thermal and electrical energy for biodiesel production and reforming processes. In addition, generating extra power will allow biodiesel production to be more economical by injecting it into the electricity network. It also provides the heat duty of organic Rankine cycle. Sensitivity analysis is accomplished on the proposed model to indicate the effects of several parameters on the biodiesel production, glycerol production, power generation, and process efficiency. This study showed that with increasing oil flow rate, total generated power in SOFC, SOFC cycle efficiency, input flow to fuel cell and cell number decreased. Also, with increasing the fuel utilization coefficient, electrical efficiency, cell number, total output power from SOFC and overall thermal efficiency increased. The effect of inlet heat to distillation towers on parameters such as overall thermal efficiency and electrical efficiency and total generated power was also investigated. As main results, solid oxide fuel cell efficiency, Electrical efficiency, and overall thermal efficiency based on LHV are 25.09%, 28.14%, and 85.16%, respectively. Overall, developing a biodiesel production plant by upgrading glycerol to hydrogen through steam reforming and using hydrogen produced in solid oxide fuel cell and employing organic Rankine cycle to generate power is an attractive strategy to make biodiesel production cycles more economical.
Recent research has been conducted for measuring modernism and the effect of using internet stati... more Recent research has been conducted for measuring modernism and the effect of using internet statistical population of the research is including 7935 persons (all high school and pre-university students from Darab town). Sample size that has been measured by the formula of Cochran's sampling is equal to 3there is no meaningful relation ones including 178 girls and 188 boys and the method of sampling is a randomly multiple-stage cluster one. Research method is correlativedescriptive in the form of measuring. That instrument of gathering data is also a standard questionnaire. For analyzing data, statistical methods of person correlation coefficient, two independent groups of t-test, regression analysis, factor analysis and path analysis are applied. The results of research show that there is a meaningful relation modernism and the tendency to critical thought, ability of sympathy and between age and modernism. But there is no meaningful relation among rationality and democracy orie...
Journal of Language and Education
Background: The link between context and identity is of paramount importance to language teaching... more Background: The link between context and identity is of paramount importance to language teaching and learning. Yet, less attention has been paid to the identity aspects in various EFL contexts. Purpose: This study examined the identity aspects of EFL learners attending both public and private English language classes through self-reflection.Method: In this mixed-methods design, 128 conveniently chosen EFL learners, including both genders, responded to the Identity Aspects Questionnaire, and 23 of those participants were invited to a follow-up semi-structured interview to triangulate the questionnaire data. The study conducted Paired Samples T-Test for quantitative data, whereas qualitative data underwent thematic analysis to extract and codify the themes.Results: The results revealed no significant differences for personal and relational identity aspects over these two EFL contexts, while collective and social ones reached differences. The qualitative data indicated that the EFL le...
Journal of Alloys and Compounds
Abstract Nowadays, the development of cost-effective and high-performance electrocatalysts toward... more Abstract Nowadays, the development of cost-effective and high-performance electrocatalysts towards Oxygen Reduction Reaction (ORR) has attracted great and increasing interest. In spite of the fact that layered double hydroxides (LDHs) have been rarely investigated towards ORR, the considerable issues of low electronic conductivity and self-aggregation of LDHs are not well addressed, which presumably lead to remarkable restrictions on mass transfer. In the present work, nitrogen and sulfur doped reduced graphene oxide (N,S-rGO) with different concentrations are incorporated for the first time into the Cobalt-Magnesium-Nickel LDH (CoMnNi-LDH) structure to improve the ORR efficiency and electrocatalytic activity. Overall, seven electrocatalysts including Graphene Oxide (GO), N,S–rGO, CoMnNi-LDH and its combination with GO and N,S–rGO with different concentrations are fabricated in this work. For assessment of the morphology and structural properties, the synthesized catalysts were characterized by FESEM, TEM, XPS, XRD, EDX, FTIR and Raman techniques. Also, in order to assess the ORR activity and durability, the electrochemical measurements (CV, LSV and chronoamperometric) are carried out for all samples. Based on the obtained results, the best ORR activity is related to the CoMnNi-LDH/ 15 wt% N,S–rGO electrocatalyst. This result proves that the addition of N,S–rGO to the CoMnNi-LDH with appropriate concentrations can significantly increase the electrocatalytic activity for ORR due to the synergy and strong interaction between them. The onset potential and electron transferred number (nM) of this catalyst are obtained to be -0.04 V vs Ag/AgCl and 3.65, respectively, which it is close to the 4e- pathway for the ORR. Finally, the electrocatalytic activity of prepared electrocatalysts is compared to the commercial %20 Pt/C catalyst. The new reported approach of introducing N,S–rGO support coupled with LDH electrocatalysts provides a novel opportunity to the develop cost-effective and durable electrocatalyst for fuel cell technology.
Journal of Language and Education
Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This ... more Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This investigation examined the trilinguals' identity synergism by drawing on their linguistic repertoire and discursive identity through pragmatic skills. For this purpose, twenty advanced EFL learners with Persian and Turkish as their mother tongues were homogenized through IELTS and played roles in Persian, Turkish, and English languages. For modeling, three monolingual native speakers of the English language responded to the English version of written discourse completion tests taken from the same role-plays. The data underwent content analysis to extract and codify the themes. The results revealed a synergy among the trilinguals' discursive systems when performing apology, complaint, refusal, and request speech acts. Multidirectional transfers among the trilinguals' Turkish, Persian, and English languages developed a form of English communication that was different from that ...
Journal of Language & Education , 2020
Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This ... more Recent studies on bilingualism and pragmatics paid little attention to trilingual speakers. This investigation examined the trilinguals' identity synergism by drawing on their linguistic repertoire and discursive identity through pragmatic skills. For this purpose, twenty advanced EFL learners with Persian and Turkish as their mother tongues were homogenized through IELTS and played roles in Persian, Turkish, and English languages. For modeling, three monolingual native speakers of the English language responded to the English version of written discourse completion tests taken from the same role-plays. The data underwent content analysis to extract and codify the themes. The results revealed a synergy among the trilinguals' discursive systems when performing apology, complaint, refusal, and request speech acts. Multidirectional transfers among the trilinguals' Turkish, Persian, and English languages developed a form of English communication that was different from that of the native speakers' model. Gestures and mimes were the non-verbal strategies employed more in the trilinguals' Turkish and English languages than their Persian. This study helps researchers and teachers gain insight into identity, pragmatics, and multilingualism.