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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Future of Medical Education Journal
- نوع مقاله: Journal Article
- کلمات کلیدی: knowledge management,Knowledge Creation,Sharing knowledge,Organization of knowledge,Application of knowledge,Faculty members of Brijand University of Medical Sciences
- چکیده:
- چکیده انگلیسی: Background: The present study aimed to analyze the situation of knowledge management among the faculty members in the four components, including creation, linking, organization and storage, and application.
Methods: This is a survey research and the results are presented descriptively and analytically. The study tool was a questionnaire of knowledge management with 84 questions (creation of knowledge, linking and sharing of knowledge, organization and storage of knowledge and application of knowledge) in Likert scale. The reliability and validity were 0.80 and CVI=0.93, respectively. The data were analyzed by SPSS 16.
Results: The results of the study showed that the average scores of the four components of the faculty members were as follows: creation of knowledge (33±7.09), linking of knowledge (67±15.17), organization and storage of knowledge (47±9.33), and application of knowledge (28±6). Analyzing the relationship between knowledge management and its components with academic degree and the background of the results, it was shown that there is statistically significant difference in the component of the application of knowledge (p>0.05).
Conclusions: The status of the faculty members of Birjand University of Medical Sciences was not desirable in the components of linking knowledge, and organization and storage of knowledge. Consequently, it seems essential to take special measures in order to empower team-working and motivate the teachers to share knowledge, such as development of group evaluation processes, group incentive programs and teaching of organization and storage of knowledge.- انتشار مقاله: 18-04-1395
- نویسندگان: Kherionesa Ramezanzadeh,Hadi Poorshafi,Mohammad Reza Abedini
- مشاهده
- جایگاه : پژوهشی
- مجله: Quarterly Journal of Applied Chemical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Cyclic Voltammetry,EIS,Dye sensitized solar cells,Binuclear complex
- چکیده:
- چکیده انگلیسی: Dye sensitized solar cells (DSSCs) are considered as one of the most promising alternative
renewable energy sources. In the structure of DSSCs, a photosensitizer composed of transition
metal complexes is used to harvest light. In this work a binuclear complex containing two
propionitrile pendant arms [ZnLCu(OAC)]PF6 {L = 1, 6- bis (2-cyanoethyl) -2, 5-bis (2-hydroxy
3-formyl-5-methylbenzyl)-2, 5- diazahexane} has been examined as a non-planar metal based
photosensitizer in the fabrication of dye sensitized solar cell. The photovoltaic performance of
the fabricated cell was evaluated and photovoltaic parameters were determined. The results
showed the conversion efficiency of 0.17%, current density of (Jsc) 0.69 mAcm-2, voltage (Voc)
0.38 v and fill factor (FF) of 0.69 under sun (Am1.5) for the cells. Electrochemical impedance
spectroscopy (EIS) and cyclic voltammetry (CV) were employed to study the electron transfer
mechanism in fabricated cells. The results showed that the potential in cathodic current was more
positive indicating that the conduction band position of TiO2 had shifted to positive energies
confirming less Voc of the fabricated cell.
- انتشار مقاله: 03-10-1396
- نویسندگان: Malihe Khalili,Mohammad Abedi,Davood Sadeghi Fateh,Kobra Razmi
- مشاهده
- جایگاه : پژوهشی
- مجله: Physical Chemistry Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Superparamagnetism,co-precipitation,Iron oxide particles
- چکیده:
- چکیده انگلیسی: The main purpose of this study was to find a simple reaction condition for reproducible synthesis of water-soluble superparamagnetic iron oxide nanoparticles (SPIONs) through the co-precipitation method. For this purpose, the effect of alkali solution, working atmosphere and final reaction temperature on type, size and magnetic properties of synthesized particles were examined. The results reveal that from two different tested alkali precipitants including ammonia and 1M NaOH, samples synthesized using ammonia demonstrate proper magnetic properties, while the latter agent leads to production of nonmagnetic brown suspensions in all reaction conditions. UV-Vis and XRD showed the typical magnetite pattern for samples synthesized using ammonia as the alkali precipitant. In addition, the results show that higher reaction temperatures lead to the production of smaller size black particles with lower oxidation level, better crystallization, and higher saturation magnetization. The optimal results were obtained when the ammonia was used as an alkali precipitant and the reaction temperature was set to 80 ̊C under N2 atmosphere. Furthermore, particles which were made under the air condition at 80 ̊C using 25% ammonia, showed satisfactory dimensional and magnetic properties. The simple reaction condition used in this study could be applicable for large scale synthesis of stable SPIONs.
- انتشار مقاله: 14-07-1399
- نویسندگان: Sina Nejabat,Seyed Omid Ranaei Siadat,Zepiur Tahmasian,Fateme Mirzajani,Fataneh Fatemi,Saman Hosseinkhani,Mohammadreza Abedi
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Veterinary Surgery
- نوع مقاله: Journal Article
- کلمات کلیدی: Rabbit,Stem cells,defect,PVA,cartilage
- چکیده:
- چکیده انگلیسی: Objective- To evaluate the biological compatibility of differentiated stem cells embedded in poly-vinyl-alcohol (PVA) scaffolds for repair of distal femoral cartilage defect. Design- Experimental in vivo study. Animals- Twelve adult male New Zealand white rabbits were used which were divided into two groups (I, II) six rabbits each. Procedures- Mesenchymal stem cells were isolated from humerus bone marrow of group I rabbits and were cultured and differentiated on PVA scaffolds to chondrocytes. Scanning Electron Microscopy (SEM) showed well distribution of the cells inside the scaffold. A 4 mm diameter full thickness cartilage defect was created on central region of bilateral distal femoral joint surface (patellar groove) in all rabbits. In group (I) the defects were covered with autologous differentiated MSCs-seeded scaffolds; whereas the group II rabbits were left without any treatment as control ones. One month and three months after operation, three rabbits were sacrificed from each group, randomly. Histopathologic evaluation of defects was performed with H&E and trichrome staining. Results- The findings showed that in the engineered cartilage with the PVA scaffold, the defects were filled with smooth, shiny white tissue macroscopically at three months after the transplantation. Despite much connective tissue formed in defect area after three months, there was no evidence of chondrocytes in control group, whereas the defects of experimental group were almost completely filled with hyaline cartilage. Conclusion and Clinical Relevance- The results indicated there is positive possibility for partial resurfacing of cartilage defect using stem cell-seeded PVA scaffolds
- انتشار مقاله: 23-05-1392
- نویسندگان: Davood Sharifi,Pejman Mortazavi,Mohammad Mehdi Dehghan,Parviz Tajik,Mohammad Abedi,Masoud Soleimani
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Veterinary Surgery
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی: Objective- To determine the effect of the transcutaneous electrical neural stimulation on healing of hip joint cartilage defect in rabbit. Design- Experimental in vivo study. Animals- 12 adult New Zealand rabbits were used. Procedures- Under effective the right femoral head was subluxated and the maximum accessible cartilage was denuded up to subchondral bone using dental bit in each rabbit. Then rabbits were divided into two groups of control( I ) with no treatment and treatment group( II) which were subjected to Transcutaneous Electrical Neural Stimulation on 3rd day with frequency of 100 Hz and 80 ?s intensity daily for 10 minutes in 14 days, having 6 rabbits each. These groups further were subdivided into 2 subgroups of 3 rabbits each with duration of one, and three months. The samples were collected for histomorphological study on day 30 and 90 days which were stained with H&E stain. Results- The samples did not show any local reaction on denuded surface in control group; whereas, the fibrous tissue in the central defect, with progression of the healing tissue to fibrocartilage as healing progressed up to 3 months in treated ones. Preliminary results indicate an increased stimulation of the repair tissue, as evidenced by total healing of three of the experimental defects with fibrocartilage as compared to the control specimens. Conclusion and Clinical Relevance- TENS as a physical method of therapy is quite effective in cartilage healing and induces faster remodeling of fibrocartilage fibers.
- انتشار مقاله: 14-05-1386
- نویسندگان: Hussein Jodeiri,Davood Sharifi,Gholamreza Abedi,Iraj Sohrabi Haghdoost,Pejman Mortazavi,Mohammad Abedi
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Necrosis,Imaging,Paclitaxel,Ovarian Cancer,99mTc-glucarate
- چکیده:
- چکیده انگلیسی: Objectives: The monitoring of cancer treatment response to chemotherapy is considered an essential strategy for follow-up of patients. The aim of this study was to evaluate the use of 99mTc-glucarate as a radiotracer for in vivo quantification and visualization of necrotic area and therapeutic effect of paclitaxel in ovarian cancer xenografted nude mice.
Materials and Methods: After implantation of human ovarian cancer (SKOV-3) in nude mice, tumor xenografted mice were enrolled in two groups as control and treatment (paclitaxel) groups. 99mTc-glucarate uptakes were quantified in tumors of control and treatment groups and also tumor imaging was performed with a gamma camera. The necrotic and viable areas of tumor and tumoral masses were evaluated through histopathological and macroscopic observations, respectively.
Results: 99mTc-glucarate uptake in tumor of treatment group was higher than control group.99mTc-glucarate uptake in ovarian tumor was clearly visualized with gamma imaging in both groups, but paclitaxel treated group showed higher radioactive uptake than control mice. The necrotic area in tumoral mass of mice treated with paclitaxel was confirmed by histopathological observations.
Conclusion: 99mTc-glucarate is an effective radiotracer for evaluation and monitoring of tumor necrosis caused by chemotherapy, and it may be helpful for therapy monitoring in patients with cancer.- انتشار مقاله: 12-04-1396
- نویسندگان: Hossein Sadeghi,Najmeh Rahmanian,Fereshteh Talebpour Amiri,Hossein Amirfakhrian,Seyed Mohammad Abedi,Seyed Jalal Hosseinimehr
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: Ethanol,Nickel,Ethylene glycol,Electrocatalytic oxidation,Poly (o-Anisidine)
- چکیده:
- چکیده انگلیسی: In this work, poly (o-Anisidine) (POA) was prepared by consecutive potential cycling in an acidic monomer solution at the surface of Carbon Paste Electrode (CPE). Nickel ions were dispersed into the polymer by immersing the electrode in NiSO4 solution. The prepared Ni/POA/CPE was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, Atomic Force Microscopy (AFM) and electrochemical methods. The electrochemical oxidation of ethanol and ethylene glycol was investigated at the Ni/POA/CPE by cyclic voltammetry and chronoamperometry techniques. The results indicated that the Ni/POA/CPE in comparison with Ni/CPE exhibited excellent electrocatalytic activity towards oxidation. Then, using a chronoamperometry method, the catalytic rate constant, k, for ethanol and ethylene glycol oxidation were found to be 2.6×106 and 1.07×107 cm3/mol s, respectively. Furthermore, the effect of several parameters such as OA concentration, POA thickness, and NiSO4 concentration and accumulation times towards the ethanol oxidation as well as the long-term stability of the modified electrode has been investigated.
- انتشار مقاله: 25-09-1394
- نویسندگان: Ezzat Naddaf,Mohammad Reza Abedi,Mohammad Saleh Zabihi,Alihossien Imani
- مشاهده
- جایگاه : پژوهشی
- مجله: International Aquatic Research
- نوع مقاله: Journal Article
- کلمات کلیدی: optimization,RSM,Fish protein hydrolysate,Tuna visceral protein,Neutrase
- چکیده:
- چکیده انگلیسی: Enzymatic hydrolysis of yellowfin tuna visceral protein using Neutrase was studied by response surface methodology using factorial design. Degree of hydrolysis (DH; %) has been estimated as a response surface to the hydrolysis conditions (enzyme activity, reaction temperature, and reaction time). R2 of 0.91 for the mathematical model indicated that 91% of the variability within the range of values studied could be explained by the model. Lack-of-fit test revealed a non-significant value for the model, indicating that the regression equation was adequate for predicting the degree of hydrolysis under any combination of the variables (p < /em> < 0.05). Enzyme activity of 39.61 AU/kg protein, temperature of 53° C, and hydrolysis time of 141min were found to be the optimal conditions to reach 30% degree of hydrolysis. The tuna visceral protein hydrolysates had relatively high protein (74.56%), and low lipid (1.86%) content. The chemical score of the hydrolysate indicated that it fulfils adult human nutritional requirements except methionine. Lysine and methionine were the first and the second limiting amino acid in that order. Phenylalanine was predominant amino acid in the hydrolysates with respect to common carp requirement.
- انتشار مقاله: 26-08-1399
- نویسندگان: Ali Motamedzadegan,Bahareh Davarniam,Gholamhassan Asadi,Abdolmohammad Abedian,Mahmoudreza Ovissipour
- مشاهده
- جایگاه : پژوهشی
- مجله: Future of Medical Education Journal
- نوع مقاله: Journal Article
- کلمات کلیدی: knowledge management,Knowledge Creation,Sharing knowledge,Organization of knowledge,Application of knowledge,Faculty members of Brijand University of Medical Sciences
- چکیده:
- چکیده انگلیسی: Background: The present study aimed to analyze the situation of knowledge management among the faculty members in the four components, including creation, linking, organization and storage, and application.
Methods: This is a survey research and the results are presented descriptively and analytically. The study tool was a questionnaire of knowledge management with 84 questions (creation of knowledge, linking and sharing of knowledge, organization and storage of knowledge and application of knowledge) in Likert scale. The reliability and validity were 0.80 and CVI=0.93, respectively. The data were analyzed by SPSS 16.
Results: The results of the study showed that the average scores of the four components of the faculty members were as follows: creation of knowledge (33±7.09), linking of knowledge (67±15.17), organization and storage of knowledge (47±9.33), and application of knowledge (28±6). Analyzing the relationship between knowledge management and its components with academic degree and the background of the results, it was shown that there is statistically significant difference in the component of the application of knowledge (p>0.05).
Conclusions: The status of the faculty members of Birjand University of Medical Sciences was not desirable in the components of linking knowledge, and organization and storage of knowledge. Consequently, it seems essential to take special measures in order to empower team-working and motivate the teachers to share knowledge, such as development of group evaluation processes, group incentive programs and teaching of organization and storage of knowledge.- انتشار مقاله: 18-04-1395
- نویسندگان: Kherionesa Ramezanzadeh,Hadi Poorshafi,Mohammad Reza Abedini
- مشاهده
- جایگاه : پژوهشی
- مجله: Energy Equipment and Systems
- نوع مقاله: Journal Article
- کلمات کلیدی: environment,Pollutants,Energy Efficiency,Energy Audit
- چکیده:
- چکیده انگلیسی: Decisions can be taken to increase energy efficiency and to mitigate the emissions to the environment by examining the energy audit and greenhouse gas (GHG) emissions footprint of crop production in different ways and in different regions, with comparable principles. In this study, energy consumption and energy indices of tomatoes production in four regions of Iran including East Azerbaijan province (open field), the provinces of Kermanshah, Tehran and Isfahan (greenhouse) were compared using related articles data. Chemical fertilizers and irrigation water in tomato production in open field and diesel fuel and chemical fertilizers in the tomato production in greenhouses system was greatest energy consumer in Iran. Energy consumption of irrigation water for tomato production in open field was markedly higher than the production in the greenhouse. In this study, the inputs of diesel fuel, chemical fertilizers, chemicals, plastics, and electricity used in the production of tomatoes, which contribute to the GHG emission footprint, were calculated via coefficients related to GHG emission. The highest and lowest greenhouse gas emissions in greenhouse tomato production in Tehran province and East Azerbaijan province farms were determined to be 13661.37 kgCO2eq ha-1 and 1274.02 kgCO2eq ha-1, respectively. Overall, tomato production in open field leads to lower greenhouse gas emissions and energy consumption per unit area, but according to more energy output in cultivation of tomato in greenhouse, energy efficiency of tomato production in greenhouse was higher.
- انتشار مقاله: 02-10-1395
- نویسندگان: Hosseinali Shamsabadi,Mohammad Abedi,Desa Ahmad,Alireza Taheri-Rad
- مشاهده