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RISS 인기검색어
- 검색키워드
- 저자 : Hossein Gilani (검색결과 5 건)
- 무료
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- 유료
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Effect of Processing Parameters and Glycerin Addition on the Properties of Al Foams
Hossein Gilani,Sajjad Jafari,Roozbeh Gholami,Ali Habibolahzadeh,Mohammad Mirshahi 대한금속·재료학회 2012 METALS AND MATERIALS International Vol.18 No.2
Aluminum foam has been produced by sintering and dissolution processes using NaCl powders as a space holder. In this research, glycerin is used as a novel lubricant along with acetone. The effects of the processing parameters including compacting pressure, sintering temperatures (620, 640 and 650 °C), size, and volume fraction of the space holder, on the physical and mechanical properties of the produced foams have been investigated. Due to segregation of the Al and NaCl powders at high compaction pressures, spalling of Al foams was observed. Meanwhile, adding small amounts of acetone and glycerin to the mixture ensures homo-geneity and prevents segregation of dissimilar powders at varying pressure. Moreover, the addition of glycerin provides an improved homogenous stress distribution within the produced foams during mechanical testing,which in turn halts crack propagation. Meanwhile, an alternative technique to remove NaCl particles during the dissolution stage has been proposed. The results showed that high quality foams were successfully produced under a compaction pressure range of 250-265 MPa and sintering temperature of 650 °C.
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Hossein Ghanadzadeh Gilani,Syrous Noury,Shain Asan 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.6
Liquid-liquid equilibrium (LLE) data for the system of (water+formic acid+2-ethyl-1-hexanol) were experimentally determined at T=(298.2, 308.2, 318.2, and 328.2) K and atmospheric pressure. A type-2 LLE was obtained for this ternary system. The influence of temperature on the equilibrium characteristics was found to be smallat the temperatures studied. Distribution coefficients and separation factors were calculated over the immiscibility regions. The experimental tie-line data were correlated using the UNIQUAC model. The values of the interaction parameters between each pair of the components were obtained for this thermodynamic model. The root mean square deviation (RMSD) between the observed and calculated mass fractions was 0.61%.
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Ali Ghanadzadeh Gilani,Hossein Ghanadzadeh Gilani,Seyedeh Laleh Seyed Saadat,Elham Nasiri-Touli,Mahrokh Peer 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.4
Liquid-liquid phase equilibrium (LLE) data were determined for the (water+propionic or butyric acid+1- heptanol) ternary systems at T=(298.15, 308.15, and 318.15) K and p=101.3 kPa. For both systems, a type-1 LLE phase diagram was obtained. The quality of the experimental LLE data was determined through the Othmer-Tobias and Bancroft equations. The experimental tie-lines were fitted using the UNIQUAC and NRTL correlation models. For the studied systems, a comparison was made between the experimental and correlated distribution coefficients and separation factors. The LSER model of Katritzky was applied to obtain the contributions of intermolecular interactions in these systems.
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Milad Sangashekan,Shahin Asan,Hossein Ghanadzadeh Gilani 한국섬유공학회 2019 Fibers and polymers Vol.20 No.7
In this study, graphene oxide was synthesized and investigated as an adsorbent for eosin B elimination. Thefeatures and structure of graphene oxide were determined by employing scanning electron microscopy, transmission electronmicroscopy, Raman spectrometry, and X-ray diffractometry. Graphene oxide can remove dyes in water solutions, but it isconfronted by separation challenges. Therefore, zinc oxide was used as a coagulant for separation of the dye solution fromgraphene oxide. Adsorption properties such as contact time, dye concentration, dosage of adsorbent, zinc oxide content, pHeffect, and temperature were regularly investigated extensively. Concentrations of dyes in the supernatant suspension wereevaluated employing a visible spectrophotometric method at the maximum wavelength (λmax) of 514 nm. The eosin B dyeshowed maximum sorption capacity of 68.027 mg/g at pH 4 and T=298 K. Isotherm models such as Freundlich andLangmuir isotherms were used to determine the better suitable isotherm model. It was discovered that this dye adsorptioncapacity on adsorbent particles was monolayer and had a good agreement with the Langmuir isotherm. Pseudo-first-order andpseudo-second-order kinetic models were investigated to determine adsorption kinetics. The pseudo-second-order forsorption of this dye on adsorbents was followed by kinetic data analysis. This research shows that this sorbent and coagulantare efficacious and applicable for the removal of eosin B from wastewaters.
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Saadati Fatemeh,Nadrian Haidar,Ghassab-Abdollahi Nafiseh,Pashazadeh Fariba,Gilani Neda,Taghdisi Mohammad-Hossein 대한가정의학회 2023 Korean Journal of Family Medicine Vol.44 No.5
This study aimed to identify the indices/indicators used for evaluating the “creating supportive environments” mechanism of the Ottawa Charter for Health Promotion, with a focus on built environments, in different settings. A search for literature with no time limit constraint was performed across Medline (via PubMed), Scopus, and Embase databases. Search terms included “Ottawa Charter,” “health promotion,” “supportive environments,” “built environ-ments,” “index,” and “indicator.” we included the studies conducted on developing, identifying, and/or measuring health promotion indices/indicators associated with “built environments” in different settings. The review articles were excluded. Extracted data included the type of instrument used for measuring the index/indicator, the number of items, participants, settings, the purpose of indices/indicators, and a minimum of two associated examples of the indices domains/indicators. The key definitions and summarized information from studies are presented in tables. In total, 281 studies were included in the review, within which 36 indices/indicators associated with “built environ-ment” were identified. The majority of the studies (77%) were performed in developed countries. Based on their ap-plication in different settings, the indices/indicators were categorized into seven groups: (1) Healthy Cities (n=5), (2) Healthy Municipalities and Communities (n=18), (3) Healthy Markets (n=3), (4) Healthy Villages (n=1), (5) Healthy Workplaces (n=4), (6) Health-Promoting Schools (n=3), and (7) Healthy Hospitals (n=3). Health promotion special-ists, health policymakers, and social health researchers can use this collection of indices/indicators while designing/evaluating interventions to create supportive environments for health in various settings.
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