Chemical Data Collections最新文献_第7页

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>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 (29Si and 27Al 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.</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>A new series of amide derivatives (10a–j) were designed and synthesized and their structures were confirmed by analytical data. Further, all these derivatives (10a–j) were examined for in vitro 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 (10a–j) were exhibited remarkable anticancer effects on four cell lines as compared with etoposide used as a positive control. The IC50 values range of tested compounds from 0.11 ± 0.051 µM to 7.42 ± 5.89 µM; whereas, positive control showed IC50 values ranges from 0.17 ± 0.034 µM to 3.34 ± 0.152 µM, respectively. Among these derivatives, four compounds 10a, 10b, 10c & 10d demonstrated more potent activities than the positive control.</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>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 ex vivo and in vivo 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 ex vivo and in vivo studies was conducted.</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>This research aimed to evaluate the chemical quality, antioxidant, and antimicrobial (antibacterial and antifungal) activity of essential oils (EOs) from three species of Eucalyptus: E. botryoides, E. cladocalyx, and E. grandis. The identification of the chemical profile of these essential oils revealed that 1,8-cineole, α-pinene, and β-(Z)-ocimene constitutes the significant compounds of these EOs. The antioxidant power tests of the essential oils of E. grandis and and E. cladocalyx shows 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. E. cladocalyx EOs were preferentially effective against fungi at the minimum inhibitory concentration of 1/2000 v/v, then E. grandis EOs were more effective against bacteria and fungi at the minimum inhibitory concentration of 1/1000 v/v. Finally, E. botryoides EO is less effective against the tested microbial strains.</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

A 1:1 cocrystal of 4-oxo-4-(pyridin-2-ylamino)butanoic acid and benzoic acid: Synthesis, characterization, structural and energy framework analysis 4-氧-4-(吡啶-2-氨基)丁酸与苯甲酸的1:1共晶:合成、表征、结构和能量框架分析

IF 2.218

Chemical Data Collections Pub Date : 2023-12-01 DOI: 10.1016/j.cdc.2023.101102

G.K. Radha , Mahesha , S. Naveen , N.K. Lokanath , P.A. Suchetan

{"title":"A 1:1 cocrystal of 4-oxo-4-(pyridin-2-ylamino)butanoic acid and benzoic acid: Synthesis, characterization, structural and energy framework analysis","authors":"G.K. Radha , Mahesha , S. Naveen , N.K. Lokanath , P.A. Suchetan","doi":"10.1016/j.cdc.2023.101102","DOIUrl":"https://doi.org/10.1016/j.cdc.2023.101102","url":null,"abstract":"<div>A 1:1 cocrystal of 4-oxo-4-(pyridin-2-ylamino)butanoic acid (APS) and benzoic acid (BA), APS-BA (1:1), was prepared and characterized by Differential Scanning Calorimetry (DSC) and Thermo Gravimetric Analysis (TGA), Infrared (FT-IR), powder X-ray diffraction (PXRD) and single crystal X-ray diffraction (SCXRD) studies. Crystal structure reveals that APS-BA (1:1) is formed by joint N-H…O and O-H…N hydrogen bonding between APS and BA molecule resulting in a hetero-dimeric R22(8) motif. A pair of C-H…O interactions and another pair of O-H…O hydrogen bonds between APS molecules ensures formation of a one-dimensional zig-zag hydrogen bonded tape of APS molecules, with the BA molecules occupying pendant position. Hirshfeld surface analysis including energy framework and lattice energy calculations were performed and compared with those of the components APS and BA. Comparison of the computed energetics of individual interactions and the lattice energies showed that cocrystal formation is thermodynamically favoured.</div>","PeriodicalId":269,"journal":{"name":"Chemical Data Collections","volume":"48 ","pages":"Article 101102"},"PeriodicalIF":2.218,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138474791","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

Synthesis, in vitro urease inhibitory potential and molecular docking study of thiazolidine-4-one derivatives 噻唑烷-4-酮衍生物的合成、体外脲酶抑制潜能及分子对接研究

IF 2.218

Chemical Data Collections Pub Date : 2023-11-30 DOI: 10.1016/j.cdc.2023.101103

Hayat Ullah , Fahad Khan , Fazal Rahim

引用次数: 0