发布求助
文献互助 智能选刊 最新文献

Chimica Techno Acta最新文献

筛选
英文 中文
Synthesis, recyclization under the action of methanol and analgetic activity of N'-(5-aryl-2-oxofuran-3(2H)-ylidene)furan-2-carbohydrazides N’-（5-芳基-2-氧代呋喃-3（2H）-亚基）呋喃-2-羧酰肼的合成、甲醇作用下的回收及镇痛活性
Chimica Techno Acta Pub Date : 2022-12-01 DOI: 10.15826/chimtech.2023.10.1.01
S. N. Igidov, I. Gorbunova, A. Turyshev, D. A. Shipilovskikh, D. A. Kozlov, Anna Rogova, R. R. Makhmudov, P. Silaichev, N. Igidov
{"title":"Synthesis, recyclization under the action of methanol and analgetic activity of N'-(5-aryl-2-oxofuran-3(2H)-ylidene)furan-2-carbohydrazides","authors":"S. N. Igidov, I. Gorbunova, A. Turyshev, D. A. Shipilovskikh, D. A. Kozlov, Anna Rogova, R. R. Makhmudov, P. Silaichev, N. Igidov","doi":"10.15826/chimtech.2023.10.1.01","DOIUrl":"https://doi.org/10.15826/chimtech.2023.10.1.01","url":null,"abstract":"New methyl 5-aryl-1-(furan-2-carbonyl)-1H-pyrazole-3-carboxylates were obtained via decyclization reaction of N'-(5-aryl-2-oxofuran-3(2H)-ylidene)furan-2-carbohydrazides under the action of methanol. Starting N'-(5-aryl-2-oxofuran-3(2H)-ylidene)furan-2-carbohydrazides were obtained by intramolecular cyclization of substituted 4-aryl-2-[2-(furan-2-ylcarbonyl)hydrazinylidene]-4-oxobutanoic acids in propionic anhydride. The structure of the compounds obtained was confirmed by the 1H NMR spectroscopy, IR spectrometry and elemental analysis methods. Analgesic activity of some obtained compounds was studied by the “hot plate” method on outbred white mice of both sexes with intraperitoneal injection.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46369347","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
Effect of gas-chromatography column regeneration during the CHN/S analysis of copper-chromium disulfide 气相色谱柱再生对二硫化铜铬CHN/S分析的影响
Chimica Techno Acta Pub Date : 2022-11-22 DOI: 10.15826/chimtech.2022.9.4.23
I. B. Troitskaia, M. M. Syrokvashin, Evgeny V. Korotaev, A. Saprykin
{"title":"Effect of gas-chromatography column regeneration during the CHN/S analysis of copper-chromium disulfide","authors":"I. B. Troitskaia, M. M. Syrokvashin, Evgeny V. Korotaev, A. Saprykin","doi":"10.15826/chimtech.2022.9.4.23","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.23","url":null,"abstract":"The effect of gas-chromatography column (GCC) regeneration during the CHN/S analysis of copper-chromium disulfide CuCrS2 (CCDS) samples on the Euro EA 3000 analyzer was identified. The effect results in a perfect straight baseline on the chromatograms of both CuCrS2 and standard samples. The obtained straight baseline causes high-quality peaks separation. In addition, the reported regeneration procedure reduces significantly the GCC regeneration duration that usually takes up to several days.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42306042","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
Sorption analysis of composites based on zinc oxide for catalysis and medical materials science 用于催化和医用材料科学的氧化锌复合材料的吸附分析
Chimica Techno Acta Pub Date : 2022-11-22 DOI: 10.15826/chimtech.2022.9.4.22
E. Maraeva, Dmitriy Radaykin, A. Bobkov, N. Permiakov, Vasily Matveev, A. Maximov, Vyacheslav Moshnikov
{"title":"Sorption analysis of composites based on zinc oxide for catalysis and medical materials science","authors":"E. Maraeva, Dmitriy Radaykin, A. Bobkov, N. Permiakov, Vasily Matveev, A. Maximov, Vyacheslav Moshnikov","doi":"10.15826/chimtech.2022.9.4.22","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.22","url":null,"abstract":"Modified structures based on zinc oxide are of special interest in catalysis and medicine. The work discusses the composite structures based on zinc oxide and hydroxyapatite, as well as silver-modified zinc oxide nanostructures obtained by chemical deposition. The obtained materials were studied using a Rigaku SmartLab diffractometric complex and a Sorbi MS sorption analyzer. The specific surface area was studied and the average size of nanoparticles in the samples is determined. The application scope of the considered materials was catalysis and medicine, including the use in bone engineering as bioactive coatings deposited on the surface of a metal bioimplant.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46656631","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
Corrosion of diffusion zinc coatings in sodium chloride solutions 扩散锌涂层在氯化钠溶液中的腐蚀
Chimica Techno Acta Pub Date : 2022-11-18 DOI: 10.15826/chimtech.2022.9.4.21
A. Biryukov, D. Zakharyevich, T. Batmanova, R. Galin, Maksim N. Ulyanov, V. Zhivulin
{"title":"Corrosion of diffusion zinc coatings in sodium chloride solutions","authors":"A. Biryukov, D. Zakharyevich, T. Batmanova, R. Galin, Maksim N. Ulyanov, V. Zhivulin","doi":"10.15826/chimtech.2022.9.4.21","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.21","url":null,"abstract":"Diffusion galvanizing is widely used in the pipe industry for coating the threaded surface of pipe couplings, protecting water and gas pipelines, and other metal products. Diffusion coatings have a number of advantages over other types of zinc coatings. In this work, electrochemical and gravimetric methods are used to study the corrosion behavior of diffusion zinc coatings in sodium chloride solutions. The corrosion rate depends non-linearly on the thickness of the coating. At the initial stages, the corrosion rate of coatings depends on the structure of the phases on the surface, and with an increase in the holding time, the corrosion rate depends to a greater extent on the properties of the products formed during the corrosion process. Films of corrosion products of diffusion zinc coatings consist of zinc oxide/hydroxide and basic zinc salts, while the composition of the film changes with increasing coating thickness.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46800571","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
Piezo-, photo- and piezophotocatalytic activity of electrospun fibrous PVDF/CTAB membrane 电纺丝纤维PVDF/CTAB膜的压电、光催化和压电光催化活性
Chimica Techno Acta Pub Date : 2022-11-17 DOI: 10.15826/chimtech.2022.9.4.20
A. Rabadanova, M. Abdurakhmanov, R. Gulakhmedov, A. Shuaibov, D. Selimov, D. Sobola, K. Částková, Shikhgasan Ramazanov, F. Orudzhev
{"title":"Piezo-, photo- and piezophotocatalytic activity of electrospun fibrous PVDF/CTAB membrane","authors":"A. Rabadanova, M. Abdurakhmanov, R. Gulakhmedov, A. Shuaibov, D. Selimov, D. Sobola, K. Částková, Shikhgasan Ramazanov, F. Orudzhev","doi":"10.15826/chimtech.2022.9.4.20","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.20","url":null,"abstract":"A composite material based on polyvinylidene fluoride (PVDF) nanofibers modified with cetyltrimethylammonium bromide (CTAB) was synthesized by coaxial electrospinning. The morphology and structure of the material were studied by SEM, FTIR spectroscopy, X-ray diffraction analysis, XPS, and the piezo-photo- and piezo-photocatalytic activity during the decomposition of the organic dye Methylene blue (MB) was studied. It is shown that the addition of CTAB promotes additional polarization of the PVDF structure due to ion-dipole interaction. It has been shown for the first time that the addition of CTAB promotes the photosensitivity of the wide-gap dielectric polymer PVDF (the band gap is more than 6 eV). It was demonstrated that the photocatalytic decomposition efficiency was 91% in 60 minutes. The material exhibits piezocatalytic activity – 73% in 60 minutes. Experiments on trapping active oxidizing forms have established that OH hydroxyl radicals play the main role in the photocatalytic process.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42063370","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: 8
Substituted benzocoumarin derivatives: synthesis, characterization, biological activities and molecular docking with ADME studies 取代苯并香豆素衍生物:合成、表征、生物活性及与ADME的分子对接研究
Chimica Techno Acta Pub Date : 2022-11-16 DOI: 10.15826/chimtech.2022.9.4.19
Megha G.V., Y. Bodke, S. H., M. N. Joy
{"title":"Substituted benzocoumarin derivatives: synthesis, characterization, biological activities and molecular docking with ADME studies","authors":"Megha G.V., Y. Bodke, S. H., M. N. Joy","doi":"10.15826/chimtech.2022.9.4.19","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.19","url":null,"abstract":"Herein, an efficient and convenient method for the synthesis of 4-(substitutedphenyl)-1,2-dihydro-2-oxo-6-(2-oxo-2H-benzo[g]chromen-3-yl)pyridine-3-carbonitrile derivatives have been reported using ammonium acetate as catalyst. The structures of synthesized compounds were confirmed using FT-IR, 1H, 13C-NMR and LC-MS spectroscopic techniques. The synthesized compounds have been evaluated for antibacterial activity against bacterial strains by agar diffusion method at different concentrations. Further, all the targeted compounds were screened for anti-oxidant and anti-cancer studies by DPPH and MTT assay methods at different concentrations. Compound 4b displayed good antioxidant and anticancer (against MCF-7 cell line) activity. Further, the binding capability for the synthesized compounds (4a–j) was analyzed by molecular docking studies using human peroxiredoxin 5 (PDB ID: 1HD2) and P38 MAP kinase (PDB ID: 1OUK) protein. Further, the physicochemical properties were analysed from ADME studies respectively.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41764767","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
Hydrothermal synthesis and sorption performance to Cs(I) and Sr(II) of zirconia-analcime composites derived from coal fly ash cenospheres 煤粉煤灰微球氧化锆-铝胺复合材料的水热合成及其对Cs(I)和Sr(II)的吸附性能
Chimica Techno Acta Pub Date : 2022-11-10 DOI: 10.15826/chimtech.2022.9.4.18
T. Vereshchagina, E. Kutikhina, O. Buyko, A. Anshits
{"title":"Hydrothermal synthesis and sorption performance to Cs(I) and Sr(II) of zirconia-analcime composites derived from coal fly ash cenospheres","authors":"T. Vereshchagina, E. Kutikhina, O. Buyko, A. Anshits","doi":"10.15826/chimtech.2022.9.4.18","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.18","url":null,"abstract":"The paper is concerned with (i) the hydrothermal synthesis of hydrous zirconium dioxide (HZD) bearing analcime (HZD-ANA, zirconia-analcime) and (ii) its sorption properties with respect to Cs+ and Sr2+. The HZD-ANA particles were synthesized from coal fly ash cenospheres composed of aluminosilicate glass with (SiO2/Al2O3)wt.=3.1 and characterized by PXRD, SEM-EDS, STA, and low-temperature N2 adsorption. The non-radioactive simulant solutions of different acidity (pH=2–10) and Cs+/Sr2+ content (0.5–50.0 mg/L) were used in the work. The effect of synthesis conditions on the HZD-ANA particle size, zirconia content and localization as well as the sorption behavior with respect to Cs+ and Sr2+ (capacity, KD) were clarified. It was found that the small-sized HZD-ANA composites surpasses the Zr free analcime and large-sized HZD-ANA material in the Cs+ and Sr2+ sorption parameters (KD ~104–106 mL/g). The conditions to synthesize the zirconia-analcime composite of the highly enhanced sorption ability with respect to Sr2+ (KD ~106 mL/g) were determined. The high-temperature solid-phase re-crystallization of Cs+/Sr2+-exchanged HZD-ANA composites was shown to occur at 1000 °C resulting in a polyphase system based on nepheline, tetragonal ZrO2, and glass phase.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47065361","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
Determination of reducing carbohydrates in natural honey samples by optical micrometry method 光学测微法测定天然蜂蜜样品中还原性碳水化合物
Chimica Techno Acta Pub Date : 2022-11-07 DOI: 10.15826/chimtech.2022.9.4.17
I. S. Shchemelev, Danil S. Khasanov, M. Smirnova, A. Ivanov, N. B. Ferapontov, M. Tokmachev
{"title":"Determination of reducing carbohydrates in natural honey samples by optical micrometry method","authors":"I. S. Shchemelev, Danil S. Khasanov, M. Smirnova, A. Ivanov, N. B. Ferapontov, M. Tokmachev","doi":"10.15826/chimtech.2022.9.4.17","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.17","url":null,"abstract":"The present article deals with the determination of the total amount of glucose and fructose in natural honey samples by the optical micrometry (OM) method. (Poly)vinyl alcohol spherical granules impregnated with a 0.05 mol/l borax solution were chosen as a sensitive element. It was shown that the formation of chelate esters of boron with polymer and carbohydrates is a pH-dependent process, and that the pH range 8.5–10.0 is the most appropriate for quantifying the total amount of reducing carbohydrates because glucose and fructose are undiscriminated. The impregnated polymer is not sensitive to the sucrose presence in the solution due to the absence of cis-diol fragments in it. Subsequently, the OM method was tested in the analysis of natural honey samples. The relative standart deviation in the case of OM method is less than 6%, and the results are similar to those obtained by the iodometric titration method. This makes the OM method suitable for laboratory-scale applications.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49664017","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
Titanium dioxide - activated carbon composite for photoelectrochemical degradation of phenol 二氧化钛-活性炭复合材料光电化学降解苯酚
Chimica Techno Acta Pub Date : 2022-10-25 DOI: 10.15826/chimtech.2022.9.4.16
L. H. Q. Anh, Uyen P. N. Tran, P. V. G. Nghi, H. T. Le, N. T. B. Khuyen, T. Hai
{"title":"Titanium dioxide - activated carbon composite for photoelectrochemical degradation of phenol","authors":"L. H. Q. Anh, Uyen P. N. Tran, P. V. G. Nghi, H. T. Le, N. T. B. Khuyen, T. Hai","doi":"10.15826/chimtech.2022.9.4.16","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.16","url":null,"abstract":"In this study, titanium dioxide (TiO2) and titanium dioxide – activated carbon composite (TiO2–AC) were prepared by sol-gel method for photoelectrochemical (PEC) applications. Characterization of the materials was performed by scanning electron microscope, energy dispersive X-ray analysis, Fourier transform infrared spectroscopy, X-ray diffraction, and diffuse reflectance spectroscopy. The results show that TiO2 was successfully loaded on activated carbon (AC), producing TiO2–AC with 2.61 eV of bandgap energy, lower than that of TiO2 (3.15 eV). Photoanodes based on TiO2 and TiO2–AC were fabricated and applied to PEC experiments for phenol degradation. In comparison with the TiO2 photoanode, the TiO2–AC one exhibited superior photocatalytic activity, which was indicated by a high current density and effective phenol removal. A mechanism of phenol PEC degradation on the TiO2–AC photoanode was proposed, which includes interaction between protonated phenol and active sites bearing oxygen on the photoanode surface. A kinetic model according to this mechanism was also established and fitted to experimental findings, resulting in rate constants of elementary reactions.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46912170","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
Local structure and ionic transport in acceptor-doped layered perovskite BaLa2In2O7 受体掺杂层状钙钛矿BaLa2In2O7的局部结构和离子输运
Chimica Techno Acta Pub Date : 2022-10-19 DOI: 10.15826/chimtech.2022.9.4.15
N. Tarasova
{"title":"Local structure and ionic transport in acceptor-doped layered perovskite BaLa2In2O7","authors":"N. Tarasova","doi":"10.15826/chimtech.2022.9.4.15","DOIUrl":"https://doi.org/10.15826/chimtech.2022.9.4.15","url":null,"abstract":"Materials with perovskite or perovskite-related structure have many applications because of theirs different physical and chemical properties. These applications are extremely diverse and cover different fields including hydrogen energy. Layered perovskites with Ruddlesden-Popper structure constitute a novel class of ionic conductors. In this paper, the effect of acceptor doping on the local structure and its relationship with transport properties were shown for layered perovskites based on BaLa2In2O7 for the first time. The geometric factor (the increase in the unit cell volume due to the increase in the ionic radii of cations) plays major role in the area of small dopant concentration (x  0.15). The concentration factor (the increase in the oxygen vacancy concentration) is more significant in the area of big dopant concentration (x  0.15). The acceptor doping is a promising way of improving the oxygen-ionic conductivity of layered perovskite BaLa2In2O7.","PeriodicalId":9964,"journal":{"name":"Chimica Techno Acta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49156457","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
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：604180095
Book学术官方微信
小红书