Chemical Data Collections最新文献_第8页

Volumetric properties of binary mixtures of (ethylene glycol or glycerol + benzene or cyclohexane or hexane) at varying temperatures 乙二醇或甘油 + 苯或环己烷或正己烷）二元混合物在不同温度下的体积特性

IF 2.218

Chemical Data Collections Pub Date : 2023-12-29 DOI: 10.1016/j.cdc.2023.101109

M. Ramadevi, S. Kavitha, E.Jagadeesh Kumar, J.Kumara Swamy, B. Satheesh

{"title":"Volumetric properties of binary mixtures of (ethylene glycol or glycerol + benzene or cyclohexane or hexane) at varying temperatures","authors":"M. Ramadevi, S. Kavitha, E.Jagadeesh Kumar, J.Kumara Swamy, B. Satheesh","doi":"10.1016/j.cdc.2023.101109","DOIUrl":"10.1016/j.cdc.2023.101109","url":null,"abstract":"<div><p>The density values were measured as a function of mole fraction [(ethylene glycol or glycerol] for binary liquid systems such as [ethylene glycol or glycerol + (hexane or cyclohexane or benzene] at a temperature between 283.15 K and 328.15 K and atmospheric pressure. Using density data, the values of molar volumes, excess molar volume, and apparent molar volumes were calculated. Further, excess molar volume was correlated with the Redlich–Kister model. It is observed that in all systems, density data was decreased with an increase in the temperature and also increased with the concentration of ethylene glycol and glycerol. Excess molar volume for all the binary systems were positive deviations over the entire composition range. Each system exhibited more positive at a higher temperature. The obtained results are discussed in terms of packing efficiency, <span><math><mrow><mi>π</mi><mo>−</mo><mtext>OH</mtext></mrow></math></span> bonding, and dispersion forces.</p></div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"49 ","pages":"Article 101109"},"PeriodicalIF":2.218,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405830023001209/pdfft?md5=81634d6e178d4900890ada7538c1b3df&pid=1-s2.0-S2405830023001209-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139064263","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: 0

Preparation and Rheological Characterization of Water-Soluble Boger Fluids 水溶性博格流体的制备和流变特性分析

IF 2.218

Chemical Data Collections Pub Date : 2023-12-28 DOI: 10.1016/j.cdc.2023.101112

Amanjot Kaur, Amit Sobti, Ravinder Kumar Wanchoo

{"title":"Preparation and Rheological Characterization of Water-Soluble Boger Fluids","authors":"Amanjot Kaur, Amit Sobti, Ravinder Kumar Wanchoo","doi":"10.1016/j.cdc.2023.101112","DOIUrl":"10.1016/j.cdc.2023.101112","url":null,"abstract":"<div><p>The primary focus of the study is to prepare and characterize water-soluble Boger fluids as they offer improved handling characteristics. The fluids have been prepared in the concentration range of 0.02–0.05 % (wt/vol.) Polyacrylamide (PAA) in a mixture of 80 % glycerol and 20 % distilled water by volume. Dynamic and steady shear data are represented in the temperature range of 15–35 °C. The shear mode data were fitted to power law model to calculate the flow consistency index (K) and flow behavior index (n). With increase in PAA concentration, the fluid character shifts from Boger to shear thinning viscoelastic fluid. Fluid relaxation time (λ) was calculated by fitting the oscillatory data to four mode Maxwell model. Empirical equations for the prediction of K, n, and λ are proposed by incorporating simultaneous effect of polymer concentration and temperature. Presented data could be of great use in unit operations such as fixed and fluidized beds dealing with Boger fluids.</p></div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"49 ","pages":"Article 101112"},"PeriodicalIF":2.218,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405830023001234/pdfft?md5=33989d9275f60610613ef9fc93730665&pid=1-s2.0-S2405830023001234-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139052924","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: 0

Understanding the thermomechanical behavior of geopolymer foams: Influence of rate and type of foaming agent and stabilizer 了解土工聚合物泡沫的热力学行为：发泡剂和稳定剂的速度和类型的影响

IF 2.218

Chemical Data Collections Pub Date : 2023-12-25 DOI: 10.1016/j.cdc.2023.101111

Ghizlane Moutaoukil , Isabel Sobrados , Saliha Alehyen , M'hamed Taibi

{"title":"Understanding the thermomechanical behavior of geopolymer foams: Influence of rate and type of foaming agent and stabilizer","authors":"Ghizlane Moutaoukil , Isabel Sobrados , Saliha Alehyen , M'hamed Taibi","doi":"10.1016/j.cdc.2023.101111","DOIUrl":"10.1016/j.cdc.2023.101111","url":null,"abstract":"<div><p>This study assesses the impact of foaming agent type/content (hydrogen peroxide and Zn powder) and stabilizer content on the mechanical, thermal and microstructural of the elaborated geopolymer foams. Eighteen geopolymer foams were synthesized and their microstructure, density, porosity and compressive strength were analyzed before and after exposure to high temperatures (300 and 600 °C). To characterize the raw materials and the samples, several techniques were used, including X-ray fluorescence, X-ray diffraction, Magic-Angle Spinning Nuclear Magnetic Resonance Spectroscopy (<sup>29</sup>Si and <sup>27</sup>Al MAS NMR), scanning electron microscopy (SEM), and porosity measurements. Thermogravimetric analysis was also performed to assess the thermal stability of the geopolymer foams with different foaming agent content and type. According to the results, the geopolymer foam with Zn powder as a foaming agent was more stable after exposure to the high temperature. The porosity increased after exposure to 300 °C, meanwhile decreasing after annealing at 600 °C.</p></div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"50 ","pages":"Article 101111"},"PeriodicalIF":2.218,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053193","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

Unveiling the degradation and stability of the insulating properties of Epoxy/CaCO3 derived from snail shell bio-composite 揭示蜗牛壳生物复合材料环氧树脂/CaCO3 绝缘特性的降解和稳定性

IF 2.218

Chemical Data Collections Pub Date : 2023-12-21 DOI: 10.1016/j.cdc.2023.101110

Egoigwe Vincent Sochima , Victor Sunday Aigbodion , Patrick Udeme-Obong Akpan

引用次数: 0

Unveiling the Degradation and Stability of the insulating properties of Epoxy/CaCO3 derived from snail shell bio-composite 揭示蜗牛壳生物复合材料环氧树脂/CaCO3 绝缘特性的降解和稳定性

IF 2.218

Chemical Data Collections Pub Date : 2023-12-21 DOI: 10.1016/j.cdc.2023.101110

Egoigwe Vincent Sochima, Victor Sunday Aigbodion, Patrick Udeme-Obong Akpan

引用次数: 0

Synthesis and biological evaluation of amide derivatives of 1,2,4-thiadiazole-thiazole-pyridine as anticancer agents 作为抗癌剂的 1,2,4-噻二唑-噻唑-吡啶酰胺衍生物的合成与生物学评价

IF 2.218

Chemical Data Collections Pub Date : 2023-12-15 DOI: 10.1016/j.cdc.2023.101108

Somaiah Nalla , Y. Pavani , Ravi kumar Gollapudi , Sumalatha Poodari , Subbarao Mannam

{"title":"Synthesis and biological evaluation of amide derivatives of 1,2,4-thiadiazole-thiazole-pyridine as anticancer agents","authors":"Somaiah Nalla , Y. Pavani , Ravi kumar Gollapudi , Sumalatha Poodari , Subbarao Mannam","doi":"10.1016/j.cdc.2023.101108","DOIUrl":"10.1016/j.cdc.2023.101108","url":null,"abstract":"<div><p>A new series of amide derivatives (<strong>10a–j</strong>) were designed and synthesized and their structures were confirmed by analytical data. Further, all these derivatives (<strong>10a–j</strong>) were examined for <em>in vitro</em> antitumor activity against four human cancer cell lines like MCF-7 (breast), A549 (lung), Col-205 (colon) and A2780 (ovarian) by using of the MTT assay. All the derivatives (<strong>10a–j</strong>) were exhibited remarkable anticancer effects on four cell lines as compared with etoposide used as a positive control. The IC<sub>50</sub> values range of tested compounds from 0.11 ± 0.051 µM to 7.42 ± 5.89 µM; whereas, positive control showed IC<sub>50</sub> values ranges from 0.17 ± 0.034 µM to 3.34 ± 0.152 µM, respectively. Among these derivatives, four compounds <strong>10a, 10b, 10c</strong> & <strong>10d</strong> demonstrated more potent activities than the positive control.</p></div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"49 ","pages":"Article 101108"},"PeriodicalIF":2.218,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405830023001192/pdfft?md5=54995a8ec02965d22e92794c51f9f41a&pid=1-s2.0-S2405830023001192-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138688373","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: 0

Ultrasound-assisted self-assembly synthesis of WO3 nanoparticles and its photocatalytic study for tetracycline photooxidation 超声辅助自组装合成 WO3 纳米粒子及其用于四环素光氧化的光催化研究

IF 2.218

Chemical Data Collections Pub Date : 2023-12-08 DOI: 10.1016/j.cdc.2023.101107

Is Fatimah , Hiroko Kawai Wijayanti , Suresh Sagadevan , Won-Chun Oh

引用次数: 0

Development and validation of UV–Vis spectrophotometric method for determination of rivastigmine in PBS and biological matrices: Application to ex vivo permeation profiles and in vivo studies from trilayer dissolving microneedle 开发并验证紫外可见分光光度法测定 PBS 和生物基质中的利伐斯的明：将三层溶解微针应用于体内外渗透图谱和体内研究

IF 2.218

Chemical Data Collections Pub Date : 2023-12-04 DOI: 10.1016/j.cdc.2023.101106

Aprilia Paramitha Dwi Putri , Nur Rezky Aulia Ilyas , Dian Arnita Putri Abdullah , Febriansyah Anandha Pratama , Kanaya Shafi Azzahra , Andi Dian Permana

{"title":"Development and validation of UV–Vis spectrophotometric method for determination of rivastigmine in PBS and biological matrices: Application to ex vivo permeation profiles and in vivo studies from trilayer dissolving microneedle","authors":"Aprilia Paramitha Dwi Putri , Nur Rezky Aulia Ilyas , Dian Arnita Putri Abdullah , Febriansyah Anandha Pratama , Kanaya Shafi Azzahra , Andi Dian Permana","doi":"10.1016/j.cdc.2023.101106","DOIUrl":"https://doi.org/10.1016/j.cdc.2023.101106","url":null,"abstract":"<div><p>Alzheimer's disease (AD) is a neurological illness. AD is often treated with rivastigmine (RV). The present study developed trilayer dissolving microneedle (TDMN) RV delivery system to overcome challenges in RV conventional forms. To enable the assessment of TDMN by <em>ex vivo</em> and <em>in vivo</em> methods, we developed a UV–Visible spectrophotometric method to quantify RV in four media using cobalt thiocyanate as a derivatization reagent. Guidelines set by the International Conference on Harmonization (ICH) were used to validate this approach. Results indicate a correlation coefficient of 0.9999 for all media, with the lower limit of quantification values for Phosphate Buffer Saline, rats’ plasma, skin, and brain matrices were 1.29, 0.67, 0.67, and 0.89 µg/mL, respectively. Significantly, the method is precise and accurate. Finally, to support this study's objective, TDMN formulation was developed, and direct application of the proposed method for quantifying RV in <em>ex vivo</em> and <em>in vivo</em> studies was conducted.</p></div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"49 ","pages":"Article 101106"},"PeriodicalIF":2.218,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405830023001179/pdfft?md5=eef5567876af029d8e1b3a897d17be5c&pid=1-s2.0-S2405830023001179-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138491012","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: 0

Metal ions detection probes with new chemo-sensors 新型化学传感器金属离子探测探头

IF 2.218

Chemical Data Collections Pub Date : 2023-12-01 DOI: 10.1016/j.cdc.2023.101104

Muhammad Arif

引用次数: 0

Phytochemical analysis, antioxidant and antimicrobial activity of three Eucalyptus species essential oils from the Moroccan Maâmora Forest: Eucalyptus cladocalyx F.Muell, Eucalyptus grandis W.Hill ex Maiden and Eucalyptus botryoides Sm. 摩洛哥maalmora森林3种桉树精油的植物化学分析及抗氧化和抗菌活性:Eucalyptus cladocalyx F.Muell, Eucalyptus grandis W.Hill ex Maiden和Eucalyptus botryoides Sm。

IF 2.218

Chemical Data Collections Pub Date : 2023-12-01 DOI: 10.1016/j.cdc.2023.101101

Loubna Koursaoui , Satrani Badr , Mohammed Ghanmi , Imane Jaouadi , Abdelkader Chibani , Nabila Chahboun , El Mahjoub Aouane , Abdelaziz Chaouch , Abdelkader Zarrouk

{"title":"Phytochemical analysis, antioxidant and antimicrobial activity of three Eucalyptus species essential oils from the Moroccan Maâmora Forest: Eucalyptus cladocalyx F.Muell, Eucalyptus grandis W.Hill ex Maiden and Eucalyptus botryoides Sm.","authors":"Loubna Koursaoui , Satrani Badr , Mohammed Ghanmi , Imane Jaouadi , Abdelkader Chibani , Nabila Chahboun , El Mahjoub Aouane , Abdelaziz Chaouch , Abdelkader Zarrouk","doi":"10.1016/j.cdc.2023.101101","DOIUrl":"https://doi.org/10.1016/j.cdc.2023.101101","url":null,"abstract":"<div><p>This research aimed to evaluate the chemical quality, antioxidant, and antimicrobial (antibacterial and antifungal) activity of essential oils (EOs) from three species of <em>Eucalyptus: E. botryoides, E. cladocalyx, and E. grandis</em>. The identification of the chemical profile of these essential oils revealed that 1,8-cineole, <em>α</em>-pinene, and <em>β</em>-(Z)-ocimene constitutes the significant compounds of these EOs. The antioxidant power tests of the essential oils of <em>E. grandis</em> and and <em>E. cladocalyx shows</em> a strong scavenging activity of the DPPH free radical with a percentage of 80.83 % and 80.46 % respectively at the concentration of 160 mg/mL, results confirmed by the FRAP test. As for the antimicrobial activity, the essential oils significantly inhibited the growth against all the strains studied. <em>E. cladocalyx</em> EOs were preferentially effective against fungi at the minimum inhibitory concentration of 1/2000 v/v, then <em>E. grandis</em> EOs were more effective against bacteria and fungi at the minimum inhibitory concentration of 1/1000 v/v. Finally, <em>E. botryoides</em> EO is less effective against the tested microbial strains.</p></div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"48 ","pages":"Article 101101"},"PeriodicalIF":2.218,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138471805","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