发布求助
文献互助 智能选刊 最新文献

Chemical science transactions最新文献

筛选
英文 中文
Synthesis of PUMF Resin for the Manufacture of Plywood 胶合板用PUMF树脂的合成
Chemical science transactions Pub Date : 2018-01-01 DOI: 10.7598/cst2019.1534
B. Mamatha, D. Sujatha, D. Uday
{"title":"Synthesis of PUMF Resin for the Manufacture of Plywood","authors":"B. Mamatha, D. Sujatha, D. Uday","doi":"10.7598/cst2019.1534","DOIUrl":"https://doi.org/10.7598/cst2019.1534","url":null,"abstract":"Phenol urea-melamine formaldehyde (PUMF) resin adhesive was prepared by using phenol, urea and melamine in two different molar ratios. The effects of the molar ratio of formaldehyde, phenol, urea, melamine on performance of PUMF resin adhesive were studied. The resin developed was characterized by differential scanning calorimeter (DSC) and Fourier transform infrared spectroscopy (FTIR). Plywood was manufactured using the developed resin and bonding properties were evaluated as per IS: 848-2006. The results indicated that the plywood made using PUMF resin of the molar ratio (phenol: urea: melamine): Formaldehyde 1:0.79:0.38:2.15 at pH 9.0 yield best result. The studies indicate that the PUMF can be used make wood-based panels of boiling water resistant grade.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75549298","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
Green Synthesis and Characterization of Copper Nanoparticles Using Mixture (Zingiber officinale, Piper nigrum and Piper longum) Extract and its Antimicrobial Activity 生姜、黑椒、长椒提取物混合绿色合成纳米铜及其抗菌活性研究
Chemical science transactions Pub Date : 2018-01-01 DOI: 10.7598/cst2019.1517
Rahul Shah, Amanullakhan Pathan, Hiral M Vaghela, S. Ameta, K. Parmar
{"title":"Green Synthesis and Characterization of Copper Nanoparticles Using Mixture (Zingiber officinale, Piper nigrum and Piper longum) Extract and its Antimicrobial Activity","authors":"Rahul Shah, Amanullakhan Pathan, Hiral M Vaghela, S. Ameta, K. Parmar","doi":"10.7598/cst2019.1517","DOIUrl":"https://doi.org/10.7598/cst2019.1517","url":null,"abstract":"Synthesis of copper nanoparticles using zingiber officinale, piper nigrum and piper longum extract has been studied. The synthesized copper nanoparticles were characterized using UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), field emission gun scanning electron microscopy (FEG-SEM) with EDS and high resolution transmission electron microscopy (HR-TEM). The antibacterial activity of copper nanoparticles was studied against micro organisms like against Bacillus subtilis (MTCC 441), Staphylococcus aureus (MTCC 737), Pseudomonas aeruginosa (MTCC 1681) and Escherichia coli (MTCC 1687). Keyword: Green synthesis, Copper nanoparticles, UV-Visible, FTIR, SEM, TEM, XRD","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89149164","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: 7
Synthesis of Some Benzimidazole Derivatives Bearing 1,3,4-Oxadiazole Moiety as Anticancer Agents. 含1,3,4-恶二唑基团苯并咪唑类抗癌药物的合成。
Chemical science transactions Pub Date : 2015-04-01 DOI: 10.7598/cst2015.1029
Bereket Mochona, Elizabeth Mazzio, Madhavei Gangapurum, Nelly Mateeva, K K Redda
{"title":"Synthesis of Some Benzimidazole Derivatives Bearing 1,3,4-Oxadiazole Moiety as Anticancer Agents.","authors":"Bereket Mochona,&nbsp;Elizabeth Mazzio,&nbsp;Madhavei Gangapurum,&nbsp;Nelly Mateeva,&nbsp;K K Redda","doi":"10.7598/cst2015.1029","DOIUrl":"https://doi.org/10.7598/cst2015.1029","url":null,"abstract":"<p><p>In an effort to establish new benzimidazole related structural leads with improved anticancer activity, several new benzimidazole derivatives (<b>5a-i</b>) with 1,3,4-oxadiazole scaffold incorporated were synthesized and studied for their anticancer activity. The anticancer screening against MDA-MB-231 breast cancer cell lines showed that compound (<b>5c</b>) exhibited moderate cytotoxicity.</p>","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"4 2","pages":"534-540"},"PeriodicalIF":0.0,"publicationDate":"2015-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594831/pdf/nihms702132.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34242988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Synthesis, Molecular Docking Studies and Antibacterial Evaluation of Baylis-Hillman Adducts of Coumarin and Pyran Derivatives Using Ionic Liquid under Microwave Irradiation 微波辐射下离子液体香豆素和吡喃衍生物Baylis-Hillman加合物的合成、分子对接研究及抗菌评价
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.415
A. Kumar, S. Kanakaraju, B. Prasanna, G. Chandramouli
{"title":"Synthesis, Molecular Docking Studies and Antibacterial Evaluation of Baylis-Hillman Adducts of Coumarin and Pyran Derivatives Using Ionic Liquid under Microwave Irradiation","authors":"A. Kumar, S. Kanakaraju, B. Prasanna, G. Chandramouli","doi":"10.7598/CST2013.415","DOIUrl":"https://doi.org/10.7598/CST2013.415","url":null,"abstract":"The Baylis-Hillman adducts 3(a-e) and 6(a-g) were prepared by the reaction of appropriate aldehydes with alkenes in presence of catalytic amount of urotropine with ionic liquids under microwave irradiation. Structures of the newly synthesized compounds were characterized by spectral studies. The antibacterial studies of Baylis-Hilmann compounds for analysis of the structural requirements for antibacterial activity using VLife MDS 3.5 has been carried out.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"46 1","pages":"561-569"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74154537","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: 11
A Rapid, Efficient and Green Method for Synthesis of 3,3'-Arylmethylene-bis-4-hydroxycoumarins without Use of any Solvent, Catalyst or Solid Surface 一种无需溶剂、催化剂和固体表面快速、高效、绿色合成3,3'-芳基亚甲基-双-4-羟基香豆素的方法
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.388
A. Gupta, Swati Samanta, R. Mondal, A. Mallik
{"title":"A Rapid, Efficient and Green Method for Synthesis of 3,3'-Arylmethylene-bis-4-hydroxycoumarins without Use of any Solvent, Catalyst or Solid Surface","authors":"A. Gupta, Swati Samanta, R. Mondal, A. Mallik","doi":"10.7598/CST2013.388","DOIUrl":"https://doi.org/10.7598/CST2013.388","url":null,"abstract":"A rapid, efficient and green methodology has been developed for the synthesis of 3,3'-arylmethylene-bis-4-hydroxycoumarins by microwave assisted condensation of aromatic aldehydes and 4-hydroxycoumarin without use of any solvent, catalyst or solid surface.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"9 1","pages":"524-528"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78628820","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: 13
Efficient Ultrasound Synthesis, Characterizations and Antimicrobial Screening of Novel Cyclic β-Diketones 新型环β-二酮的高效超声合成、表征及抗菌筛选
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.355
N. Korde, S. Gaikwad, B. Khade, A. Rajbhoj, B. Ambedkar
{"title":"Efficient Ultrasound Synthesis, Characterizations and Antimicrobial Screening of Novel Cyclic β-Diketones","authors":"N. Korde, S. Gaikwad, B. Khade, A. Rajbhoj, B. Ambedkar","doi":"10.7598/CST2013.355","DOIUrl":"https://doi.org/10.7598/CST2013.355","url":null,"abstract":"Hydroxyphenyl)-3-propane,1,3-diones 4(LA-LF) have been synthesized by a simple and convenient method employing Baker-Venkatraman transformation on corresponding 2- acetylphenyl benzoate by conventional as well as ultrasound irradiation method. The structure of synthesized compounds has been assigned on the basis of elemental and spectral analysis (IR, 1 H NMR, 13 C NMR, UV/Vis, Mass). The synthesized compounds were evaluated for antibacterial and antifungal activities. Utilization of ultrasound irradiation, simple reaction conditions, isolation and purification makes this manipulation very interesting from an economic and environmental perspective.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"21 1","pages":"407-412"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82217922","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: 4
Hydroboration of Cyclopropane: A Transition State Study 环丙烷的硼氢化反应:过渡态的研究
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.420
S. Singh, P. P. Thankachan
{"title":"Hydroboration of Cyclopropane: A Transition State Study","authors":"S. Singh, P. P. Thankachan","doi":"10.7598/CST2013.420","DOIUrl":"https://doi.org/10.7598/CST2013.420","url":null,"abstract":"The hydroboration of cyclopropane has been investigated using the B3LYP density functional method employing several split-valence basis sets. It is shown that the reaction proceeds via a four-centered transition state. Calculations at higher levels of theory were also performed at the geometries optimized at the B3LYP level, but only slight changes in the barriers were observed. Structural parameters for the transition state are also reported.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"41 5 1","pages":"479-484"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82764008","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: 4
Inclusion Complex of Thiourea Substrate with Hydroxypropyl-β-cyclodextrin 硫脲底物与羟丙基-β-环糊精的包合物
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.402
A. Allouch, I. Hassan, Adib Abou Dalle, H. El-Nakat, F. Omar
{"title":"Inclusion Complex of Thiourea Substrate with Hydroxypropyl-β-cyclodextrin","authors":"A. Allouch, I. Hassan, Adib Abou Dalle, H. El-Nakat, F. Omar","doi":"10.7598/CST2013.402","DOIUrl":"https://doi.org/10.7598/CST2013.402","url":null,"abstract":"To be active, a heavy metal trap substrate must possess some degree of aqueous solubility. The use of cyclodextrins molecules, which can form inclusion complexes with the hydrophobic trap substrates, has provided the required solubility through the relatively hydrophobic cavity of native cyclodextrins and their derivatives that enhances the ability to complex hydrophobic substrates of appropriate size and shape. In this study, spectrophotometry has been used to investigate the effects of cyclodextrin on the solubility, stoichiometry and stability of the substrate-CD complex formed between N-(2-ethylphenyl)-N'-(2-methylphenyl) thiourea, (a hydrophobic substrate trap) and hydroxypropyl-β-cyclodextrin (HP−β−CD). The solubility, stoichiometry and overall association constant of the complex have been determined using the Higuchi's method, the continuous variation (Job's plot) method and the Scott's method respectively.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"37 1","pages":"663-669"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90133460","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
Synthesis, Structural Study and Antimicrobial Screening of Substituted Bis-benzothiazole Derivatives 取代双苯并噻唑衍生物的合成、结构研究及抗菌筛选
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.414
P. P. Deohate, Shri Radhakisan, Laxminarayan Toshniwal
{"title":"Synthesis, Structural Study and Antimicrobial Screening of Substituted Bis-benzothiazole Derivatives","authors":"P. P. Deohate, Shri Radhakisan, Laxminarayan Toshniwal","doi":"10.7598/CST2013.414","DOIUrl":"https://doi.org/10.7598/CST2013.414","url":null,"abstract":"A series of {4-(4-(6-substituted-benzothiazol-2-yl-amino)-3-carboxy-benzyl)-2-carboxy- phenyl}-6-substituted-benzothiazol-2-yl-amines have been synthesized by oxidative cyclization of 1-{4-(4-(3-aryl thiocarbamido)-3-carboxy-benzyl)-2-carboxy-phenyl}-3-aryl thiocarbamides using the solution of bromine in chloroform followed by the basification with dilute ammonium hydroxide solution. Initially 1-{4-(4-(3-aryl thiocarbamido)-3-carboxy-benzyl)-2-carboxy-phenyl}-3-aryl thio- carbamides were prepared by the interaction of different aryl isothiocyanates with 4,4'-methylene- bis-(anthranilic acid). The latter was obtained by treating the mixture of anthranilic acid and concentrated hydrochloric acid with 3% aqueous formaldehyde followed by neutralization with sodium hydroxide. The acetylation of bis-benzothiazoles afforded di-acetyl derivatives. The structures of synthesized compounds have been established on the basis of chemical transformation, elemental analysis, equivalent weight determination and IR, 1 H NMR spectral studies. The title compounds have been assayed for their biological activity against gram-positive as well as gram- negative microorganisms.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"99 1","pages":"473-478"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89265781","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
Study of Structure Making/Breaking Properties of Glucose, Fructose, Sucrose and Maltose in Aqueous KCl at Various Temperatures 不同温度下葡萄糖、果糖、蔗糖和麦芽糖在氯化钾水溶液中的结构形成/破坏特性研究
Chemical science transactions Pub Date : 2013-04-18 DOI: 10.7598/CST2013.421
K. Kapadnis, A. P. Hiray
{"title":"Study of Structure Making/Breaking Properties of Glucose, Fructose, Sucrose and Maltose in Aqueous KCl at Various Temperatures","authors":"K. Kapadnis, A. P. Hiray","doi":"10.7598/CST2013.421","DOIUrl":"https://doi.org/10.7598/CST2013.421","url":null,"abstract":"The volumetric and viscometric studies of glucose, fructose, sucrose and maltose have been determined in 0.05 M and 0.5 M KCl solutions at 298.15, 303.15, 308.15 and 313.15 K. The apparent molar volume (φv) values vary linearly with square root of concentration of KCl solution. The limiting apparent molar volume (φ 0 v) has been interpreted in terms of solute-solvent interaction. The φ 0 v values vary with temperature and can be represented in the power series of structure making and breaking capacity of electrolyte is inferred from the sign of dB/dT values. The apparent molar expansibility has also been determined. Glucose, fructose, sucrose and maltose have been found to be structure maker and breaker in aqueous KCl from molar volume as well as viscosity studies.","PeriodicalId":10087,"journal":{"name":"Chemical science transactions","volume":"390 1","pages":"485-490"},"PeriodicalIF":0.0,"publicationDate":"2013-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76597465","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: 5
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信