Opportunity or Threat : Local People's Opinion on Bistoon Heritage Tourism Development

Mostafa Mohammadi,Zainab khalifah,Hasan Hosseini 세계문화관광학회 2009 Conference Proceedings Vol.10 No.0

Bistoon town located in the western part of Iran is a cultural heritage tourism destination characterized by its unique historical site which counts as one of the most famous sites in Near Eastern archeology. It is Combination of five different engineering's of irrigation, stone; restoration, bridge construction and industry all have created a two-thousand-year masterpiece. Bistoon was inscribed into UNESCO's World Heritage in 2006 and attracts thousands of national and international tourists in a year. This research examines the perceptions of the residents toward heritage tourism. The study techniques include questionnaire survey and interviews. Evidence of conflict is seen among residents towards tourism development in the area.

Experimental and Numerical Evaluation of the Effect of Nano Calcium Carbonate on Geotechnical Properties of Clayey Sand Soil

Mostafa Mohammadi,Ali M. Rajabi,Mahdi Khodaparast 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.1

The effect of nano-CaCO3 on the geotechnical properties of clayey sand (SC) soil was investigated. SC soil containing 10%, 20% and 30% clay and 0.3%, 0.7%, 1.1% and 1.5% nano-CaCO3 were cured for 7, 14 and 28 days and then subjected to uniaxial compression testing. The experimental results were analyzed numerically by the group method of data handling using an artificial neural network. Crystalline phases were analyzed by x-ray diffraction (XRD) to study the microstructure of soil specimens improved with nano-CaCO3. The addition of nano-CaCO3 to SC specimens, especially those with lower clay contents, increased their uniaxial compressive strength and the compressive strength increased over time. An optimum nano-CaCO3 level of 0.7% was determined for soil containing 10% and 20% clay and 1.1% for soil containing 30% clay. The results indicated a decrease in deformation and increase in stiffness of the soil with the addition of nano-CaCO3. The effect of nano-CaCO3 on the ultimate compressive strength of the soil in the XRD patterns indicated an increase in the recrystallization of the particles. Numerical analysis of the experimental results found a correlation for predicting the uniaxial compressive strength of the improved SC soil with a mean error of 4%.

Development of cellulosic‑based hemostatic dressing with antibacterial activity

Mostafa Goodarz,Amir Behzadnia,Hassan Mohammadi 한국의류학회 2022 Fashion and Textiles Vol.9 No.1

A cotton-based hemostatic dressing featuring antibacterial properties was developed with the potential of being used in trafc accidents to control hemorrhage. Cotton gauze was oxidized initially in an acidic medium and then coated by PVA nanofbers and/or PVA nanofbers loaded with Ciprofoxacin. Fabricated dressings were characterized by FTIR analysis and SEM images. The FTIR spectrum showed the existence of carboxyl groups on the oxidized cotton gauze’s surface. The carboxyl groups content was estimated to be 17.3±0.3 for the oxidized sample with a mixture of nitric acid and phosphoric acid for 24 h (OCF-Mixed acid24). Moreover, the efect of the exposure duration of cotton gauze in the acidic medium on the blood coagulation activity was assessed. It was observed that the OCF-Mixed acid24 sample exhibited an agreeable hemostatic activity (BCIs=10). The antibacterial activity against E. coli and S. aureus bacteria was also captured for the coated cotton gauze by the PVA nanofbers loaded with Ciprofoxacin.

Evaluation of solvent dearomatization effect in heavy feedstock thermal cracking to light olefin: An optimization study

Mostafa Ghasemi,Mohsen Nouri,Mehdi Sedighi,Majid Mohammadi 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.9

Response surface method was used to study the effect of aromatic extraction of heavy feedstock in thermal cracking. N-methylpyrrolidone as the solvent performing dearomatization of feedstock was at different temperature and molar solvent to oil ratios. Temperature, flow rate and steam-to-hydrocarbon ratio were in the range of 1,053-1,143K, 1-2 g/g, and 0.75-1.2 g/min, respectively. From the CCD studies, the effects of flow rate and coil outlet temperature were the key factors influencing the yield of light olefins. Ethylene and propylene yields increased more than 10%by dearomatization. C5+ decreased by 13% on average. Finally, we obtained the single maximum yield of ethylene,propylene, and simultaneous maximum yields for untreated and raffinate.

Reducing Irrational Beliefs and Pain Severity in Patients Suffering from Non-Cardiac Chest Pain (NCCP): A Comparison of Relaxation Training and Metaphor Therapy

( Mostafa Bahremand ),( Gholamreza Moradi ),( Mozhgan Saeidi ),( Samira Mohammadi ),( Saeid Komasi ) 대한통증학회 2015 The Korean Journal of Pain Vol.28 No.2

Background: Patients suffering from non-cardiac chest pain (NCCP) can interpret their chest pain wrongly despite having received a correct diagnosis. The objective of this study was to compare the efficacy of the relaxation method with metaphor therapy for reducing irrational beliefs and pain severity in patients with NCCP. Methods: Using a randomized controlled trial, 33 participants were randomly divided into a relaxation training group (n= 13), a metaphor therapy group (n = 10), and a control group (n = 10), and were studied for 4 weeks. The two tools used in this research were the Brief Pain Inventory (BPI) index for determining the degree of pain and the short version of the Jones Irrational Belief Test. Metaphor therapy and a relaxation technique based on Ost’s treatment were used as the interventions. The collected data were analyzed with a multivariate analysis of covariance (MANCOVA), a Chi-square test, and the Bonferroni procedure of post-hoc analysis. Results: The relaxation training method was significantly more effective than both metaphor therapy and the lack of treatment in reducing the patients’ beliefs of hopelessness in the face of changes and emotional irresponsibility, as well as the pain severity. Metaphor therapy was not effective on any of these factors. In fact, the results did not support the effectiveness of metaphor therapy. Conclusions: Regarding the effectiveness of the relaxation method as compared with metaphor therapy and the lack of treatment in the control group, this study suggests that relaxation should be paid greater attention as a method for improving the status of patients. In addition, more studies are needed to determine the effectiveness of metaphor therapy in this area. (Korean J Pain 2015; 28: 88-95)

Microbial fuel cell for oilfield produced water treatment and reuse: Modelling and process optimization

Majid Mohammadi,Mehdi Sedighi,Rajamohan Natarajan,Sedky Hassan Aly Hassan,Mostafa Ghasemi 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.1

Oilfield produced water is one of the vast amounts of wastewater that pollute the environment and cause serious problems. In this study, the produced water was treated in a microbial fuel cell (MFC), and response surface methodology and central composite design (RSM/CCD) were used as powerful tools to optimize the process. The results of two separate parameters of sulfonated poly ether ether ketone (SPEEK) as well as nanocomposite composition (CNT/Pt) on the chemical oxygen demand (COD) removal and power generation were discussed. The nanocomposite was analyzed using XRD, SEM, and TEM. Moreover, the degree of sulfonation (DS) was measured by NMR. A quadratic model was utilized to forecast the removal of COD and power generation under distinct circumstances. To obtain the maximum COD removal along with maximum power generation, favorable conditions were achieved by statistical and mathematical techniques. The findings proved that MFC could remove 92% of COD and generate 545mW/m2 of power density at optimum conditions of DS=80; and CNT/Pt of 14 wt% CNT- 86 wt% Pt.

Simulation of combustion in a porous-medium diesel engine

Arash Mohammadi,Mostafa Varmazyar,Reza Hamzeloo 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.5

The future internal-combustion (IC) engines should have minimum emissions level under lowest feasible fuel consumption. This aim can be achievable with a homogeneous combustion process in diesel engines. We used a porous medium (PM) to homogenize the combustion process. This research studies simulation of a direct-injection diesel engine, equipped with a chemically inert hemispherical PM. Methane is injected into a hot PM, assuming mounted up the cylinder in head. Combustion with lean mixture occurs inside PM. A numerical model of PM engine was carried out using a modified version of the KIVA-3V code. PM results were evaluated with experimental data of unsteady combustion-wave of methane in a porous tube. The results show the mass fraction of methane, CO, NO and temperature in solid and gas phases of the PM and in-cylinder fluid. Also presented are the effects of injection timing and compression ratio on combustion.

Place attachment and Residents' Perceived Impacts of Tourism

Sadegh Salehi,Mostafa Mohammadi 세계문화관광학회 2011 Conference Proceedings Vol.12 No.-

This study examines local community attachment to their place of living and their perceptions toward social and economic impacts of tourism development in the city of Bistoon in Iran. The study focused on residents in the vicinity of popular heritage attractions in the region. According to the survey residents in this study expressed slightly high place attachment to their community and most of the respondents recognized and appreciated the positive impacts of tourism towards the local people. The findings of semi structured interviews with residents supported the survey results.

Place Attachment and Residents` Perceived Impacts of Tourism

( Sadegh Salehi ),( Mostafa Mohammadi ) 한국문화관광학회 2012 문화관광연구 Vol.14 No.1

This study examines local community attachment to their place of living and their perceptions toward social and economic impacts of tourism development in the city of Bistoon in Iran. The study focused on residents in the vicinity of popular heritage attractions in the region. According to the survey, residents in this study expressed slightly high place attachment to their community and most of the respondents recognized and appreciated the positive impacts of tourism towards the local people. The findings of semi structured interviews with residents supported the survey results.

Residents' Opinion toward Tourism Development in Babolsar

Rahmat Abbasnejad,Mostafa Mohammadi 세계문화관광학회 2011 Conference Proceedings Vol.12 No.-

The city of Babolsar located on the southern coast of the Caspian Sea is one of the main tourism destinations in Mazandaran province of Iran. Tourism has become a very fast growing industry in the area and the important natural historical and cultural sites of the city attract many national and international tourists every day. This research examines local residents' attitudes and perceptions toward tourism development.