Material Science Research India最新文献_第4页

Composite Columns in Building Structure - A Analytical Study 建筑结构中组合柱的分析研究

Material Science Research India Pub Date : 2022-08-29 DOI: 10.13005/msri/190206

Md Tanvir Hasan Fahim

引用次数: 1

Investigation on the Adsorption Properties of an Engineered Biochar (Fe2o3-Bc) Nano-Composite in Binary and Ternary Aqueous Solutions 工程生物炭(Fe2o3-Bc)纳米复合材料在二元和三元水溶液中的吸附性能研究

Material Science Research India Pub Date : 2022-08-29 DOI: 10.13005/msri/190207

Tobias T. Shumba, Bridgette V. Musamirapamwe

{"title":"Investigation on the Adsorption Properties of an Engineered Biochar (Fe2o3-Bc) Nano-Composite in Binary and Ternary Aqueous Solutions","authors":"Tobias T. Shumba, Bridgette V. Musamirapamwe","doi":"10.13005/msri/190207","DOIUrl":"https://doi.org/10.13005/msri/190207","url":null,"abstract":"The binary and ternary adsorptions of Pb (II), methyl orange (MO) and brilliant blue (BB) on engineered biochar (Fe2O3-BC) nano-composite using pyrolysis and microwave activation were investigated in this work. Batch experiments were conducted to investigate the capacity of Fe2O3BC to remove MO, Pb and BB in binary and ternary aqueous solutions. MO removal was higher in MO-Pb binary solution than in ternary MO solution. A large amount of adsorbent dosage, high concentration and longer time were witnessed to achieve maximum removals in ternary solutions as compared to binary solutions. The Langmuir plots indicated that the isotherm can be used to describe sorption studies of both MO dye and Pb2+, while Temkin isotherm was not in agreement with the results. The closeness of R2 value to 1 indicated that the data obtained fits Langmuir Isotherm model of monolayer adsorption kinetics. It was concluded that the Fe2O3-BC nano-composite has a series of distinct homogeneous sites available for binding the MO anions in solution. Therefore, the use of Fe2O3-BC nano-composite for small scale community water purification is a novel cause.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80336830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Materials for Humanitas 人道主义材料

Material Science Research India Pub Date : 2022-08-29 DOI: 10.13005/msri/190201

O. Toprakci

引用次数: 0

Assessment of the Enhancement for the Excitation Emission in Porous Gan using Photoluminescence 光致发光对多孔氮化镓激发发射增强的评价

Material Science Research India Pub Date : 2022-08-29 DOI: 10.13005/msri/190205

M. K. Alquran

引用次数: 1

Influence of Heat Treatment on Chemical and Mechanical Properties of Toona ciliata M. Roem. Wood 热处理对香椿化学力学性能的影响。木

Material Science Research India Pub Date : 2022-05-10 DOI: 10.13005/msri/190105

V. Sharma, Rajneesh Kumar, B. Dutt, Varun Attri

{"title":"Influence of Heat Treatment on Chemical and Mechanical Properties of Toona ciliata M. Roem. Wood","authors":"V. Sharma, Rajneesh Kumar, B. Dutt, Varun Attri","doi":"10.13005/msri/190105","DOIUrl":"https://doi.org/10.13005/msri/190105","url":null,"abstract":"Thermal modification or heat treatment was performed on the samples of Toonaciliataat various temperatures (80°C, 120°C, 160°C, 200°C) and durations (2h, 4h, and 6h) which revealed that chemical and mechanical properties of the wood improved at particular temperature with certain time duration. These results suggest that thermal treatment considerably improves wood properties like dimensional stability and durability. Vacuumoven was used to assess the process of thermal modification and different procedures were used to study the chemicaland mechanical properties of Toona wood. In chemical properties the maximum value of holocellulose content (71.73%) and lignin content (27.52%), were observed at 200°C. While, the minimum value of holocellulose content (61.29%) and lignin content (24.42%), were found to be at 200°C and at control, respectively. In mechanical properties the maximum value of tensile strength (0.072), bending strength 0.022), compression parallel to the grain (0.052) and compression perpendicular (0.039) to the grain was observed at 120°C. Whereas, the minimum tensile strength (0.039), bending strength (0.008), compression parallel (0,041) the grain and perpendicular (0.027) to the grain was found at 200°C.All the chemical and mechanical properties of Toona wood improved after heat treatment at particular temperature and duration.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78545238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Conducting and Tensile Properties of Reduced Graphene Oxide/ Polybutylene Adipate Terephthalate (Rgo/Pbat) Nanocomposites 还原氧化石墨烯/聚己二酸丁二酯(Rgo/Pbat)纳米复合材料的导电和拉伸性能评价

Material Science Research India Pub Date : 2022-05-10 DOI: 10.13005/msri/190103

L. Nayanajith, R. D. De Silva, S. R. R. S. R. Rosa, I. Kottegoda

{"title":"Evaluation of Conducting and Tensile Properties of Reduced Graphene Oxide/ Polybutylene Adipate Terephthalate (Rgo/Pbat) Nanocomposites","authors":"L. Nayanajith, R. D. De Silva, S. R. R. S. R. Rosa, I. Kottegoda","doi":"10.13005/msri/190103","DOIUrl":"https://doi.org/10.13005/msri/190103","url":null,"abstract":"This study was focused on evaluation of conducting and tensile properties of rGO/ Polybutylene adipate terephthalate (PBAT) nanocomposite intended to use in electronic applications which require biodegradability. This study was also considered to be worthwhile since very little work has been done in this regard so far. PBAT was specifically selected for the study as it is an extensively used biodegradable polymer for variety of applications. The solvent casting method was employed to prepare rGO/PBAT nanocomposites where rGO was dispersed in a solution of PBAT by ultrasonication followed by evaporation of the solvent components. Electrical conductivity (σ) of rGO/PBAT nanocomposites showed a percolation behavior as rGO content was increased from the 0.5 % to 1.5 % (σ increased drastically with the increase of rGO content). The percolation threshold was approximately 0.0045, (i.e., 0.75 w/w % of rGO). The average critical exponent (t) related to the percolation theory was 1.49 ± 0.19 which is well within the expected range 1< t < 2. According to impedance studies, the electrical impedance of GO/PBAT composites decreased with the increasing rGO content, which agreed well with the behavior of the electrical conductivity investigated previously. The same equivalent circuit was shown by each composite except the values for constant phase element CPE and resistor R; the equivalent electrical circuit was a parallel combination of CPE and R. The dielectric analysis of the composites indicated that dielectric parameters ϵ”, ϵ’ and dissipation factor increased significantly with increasing rGO content. The tensile strength of the composites was better than that of neat PBAT up to 1.5 % of rGO loading and decreased on further increasing of rGO. However, their tensile strain at break decreased with increasing rGO content. The results indicated that PBAT/rGO polymer composite is promising candidate for various electronic applications.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90157518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimized Structure, in Silico interaction and Molecular Docking Analysis of Two Benzimidazole-2-Thione Derivatives 两个苯并咪唑-2-硫酮衍生物的结构优化、硅相互作用及分子对接分析

Material Science Research India Pub Date : 2022-05-10 DOI: 10.13005/msri/190101

Mulveer Singh, S. Murugavel, R. Chandrasekaran, R. Kant

{"title":"Optimized Structure, in Silico interaction and Molecular Docking Analysis of Two Benzimidazole-2-Thione Derivatives","authors":"Mulveer Singh, S. Murugavel, R. Chandrasekaran, R. Kant","doi":"10.13005/msri/190101","DOIUrl":"https://doi.org/10.13005/msri/190101","url":null,"abstract":"The nitrogen containing heterocyclic compounds play a very important role in defining their biological and pharmacological properties. Two such important compounds having known crystal structure, viz. 5-Methoxy-1H-benzo[d]imidazole-2(3H)-thione (M1) and 4, 5- Dimethylbenzimidazolene-2-thione (M2), have been investigated for their optimal molecular geometry, atomic Mulliken charges, molecule electrostatic potential, HOMO (highest occupied molecular orbital)-LUMO (lowest unoccupied molecular orbital), and associated molecular characteristics using DFT (density functional theory). The optimized geometry of (M1) and (M2), slightly deviates from the X-ray structure. The N-H...S and N-H...O hydrogen bonding contribute to the Hirshfeld surface in the molecular structure M1 [24.2 % and 7.1 % of the overall contribution, respectively] while the N-H...S hydrogen bonding contribution is 25.4% in M2. The crystal void analysis has also been reported, besides the energy frameworks built using distinct intermolecular interaction energies. The computational antibacterial activity of both structures has been analyzed in silico with Staphylococcus epidermidis bacterial protein (PDB ID: 4EJV). The results indicate that M1 and M2 possess higher binding energy with more interactions as compared to the standard drug chloramphenicol with receptor complex and this observation leads us to the state that these two derivatives could be the potential candidates for the antibacterial drug development process. KEYWORDS: Crystal voids; Density Functional Theory; Hirshfeld surface; Interaction energy; Mulliken charges; Molecular orbital energy; Molecular docking","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91531765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single Crystalline Zinc Oxide Nanorods Grown by R-F Sputtering Technique Onto P-Si Substrate for Sensing Applications 用R-F溅射技术在P-Si衬底上生长单晶氧化锌纳米棒

Material Science Research India Pub Date : 2022-05-10 DOI: 10.13005/msri/190104

A. I. A. A. I. Aljameel

引用次数: 1

Zinc Chloride Ameliorates the Adverse Effects of Silver Nitrates Compared to Silver Nanoparticle in Post-Natal Model of Toxicity. 与纳米银相比，氯化锌在产后毒性模型中改善了硝酸银的不良反应。

Material Science Research India Pub Date : 2022-05-10 DOI: 10.13005/msri/190102

A. Fehaid, Sara T. Elazab, Mona G. Elhadidy, E. E. El Nashar, A. Abdalla, K. Al-Khater, M. A. Alghamdi, Mahmoud M. Elalfy

{"title":"Zinc Chloride Ameliorates the Adverse Effects of Silver Nitrates Compared to Silver Nanoparticle in Post-Natal Model of Toxicity.","authors":"A. Fehaid, Sara T. Elazab, Mona G. Elhadidy, E. E. El Nashar, A. Abdalla, K. Al-Khater, M. A. Alghamdi, Mahmoud M. Elalfy","doi":"10.13005/msri/190102","DOIUrl":"https://doi.org/10.13005/msri/190102","url":null,"abstract":"Silver nanoparticles have been shown to increase postnatal toxicity in breastfeeding female rats, with negative consequences for their offspring. We wanted to investigate more about the differences in toxicity between silver nitrates and silver nanoparticles, as well as the impact of zinc chloride treatment on the silver nitrates induced toxicity on female albino rats. For 21 days, breastfeeding female albino rats and their puppies were exposed to silver nitrates at dosages of 0, 50, and 100 mg/kg. The results demonstrated that silver nitrates were more hazardous than nano-silver, as evidenced by higher free radical release, increased MDA levels, and decreased antioxidant enzyme levels (SOD). In addition, the silver ions-treated group had higher levels of liver enzymes and creatinine. Zinc chloride treatment, in particular, had a protective impact and mitigated the negative effects of silver nitrates, as seen by the restoration of baseline levels of liver enzyme, creatinine, and antioxidant enzyme. In addition, zinc chloride therapies reduced the harmful effects of silver nitrates on liver and kidney tissues but not lung tissue.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90989860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization and Modification of Clay for Removal of Drinking Water Hardness 去除饮用水硬度粘土的表征及改性研究

Material Science Research India Pub Date : 2021-12-30 DOI: 10.13005/msri/180307

Asanthi Ireshika Rukshani Wickramasuriya, Ruwan Chandima Wickramasinghe Arachchige, I. Kottegoda

{"title":"Characterization and Modification of Clay for Removal of Drinking Water Hardness","authors":"Asanthi Ireshika Rukshani Wickramasuriya, Ruwan Chandima Wickramasinghe Arachchige, I. Kottegoda","doi":"10.13005/msri/180307","DOIUrl":"https://doi.org/10.13005/msri/180307","url":null,"abstract":"Hardness in drinking water is a major problem in domestic usage. It is important to use drinking water within the tolerance limits of hardness. Clay samples obtained from two different areas in Sri Lanka were analysed, modified, and optimized with a view to suppress the hardness in drinking water. Characterization of clay was carried out using XRD (X-ray diffraction spectroscopy), FTIR (Fourier transformed infrared spectroscopy), and SEM (Scanning electron microscope). Variation of the adsorption capacity of clay was analysed at different firing temperatures of the clay samples. XRD analysis revealed that both clay types are consisting of Kaolinite as the main constituent. The hardness adsorption efficiency and the retention of hardness adsorption in prolonged cycles has been observed when the clay is heated at different temperatures. In addition, the water hardness adsorption efficiency was enhanced by the cationic modification using sodium chloride. The results further reveals that the Freundlich isotherm is best fit for Ca2+ adsorption on both Biyagama and Deniyaya clay whereas that for the Mg2+ adsorption is Langmuir isotherm. The present study is useful to develop low-cost clay-based materials to minimize water hardness.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73696061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2