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Quantum chemical analysis of reactivity of several chromenopyrazoles 几种氯硝唑反应性的量子化学分析
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-26-32
I. E. Menyailo, M. V. Pozharov, T. Zacharova, A. Y. Kostrickiy, I. A. Demeshko
{"title":"Quantum chemical analysis of reactivity of several chromenopyrazoles","authors":"I. E. Menyailo, M. V. Pozharov, T. Zacharova, A. Y. Kostrickiy, I. A. Demeshko","doi":"10.18500/1816-9775-2022-22-1-26-32","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-26-32","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"424 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91445646","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
Some aspects of antimicrobial photodynamic effects 抗菌光动力效应的一些方面
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-33-46
E. Tuchina
{"title":"Some aspects of antimicrobial photodynamic effects","authors":"E. Tuchina","doi":"10.18500/1816-9775-2022-22-1-33-46","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-33-46","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81005692","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
The characteristics of the elemental composition of the scots pine wood in accordance with the conditions of a growing site and a vegetation phase 苏格兰松木的元素组成特征与生长地点和植被阶段的条件相一致
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-47-56
A. Khokh, V. B. Zviagintsev
{"title":"The characteristics of the elemental composition of the scots pine wood in accordance with the conditions of a growing site and a vegetation phase","authors":"A. Khokh, V. B. Zviagintsev","doi":"10.18500/1816-9775-2022-22-1-47-56","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-47-56","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82771233","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
Electroanalytical properties of planar sensors in aqueous environments of amoxicillin 平面传感器在阿莫西林水环境中的电分析性能
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-16-25
E. G. Kulapina, R. K. Mursalov
{"title":"Electroanalytical properties of planar sensors in aqueous environments of amoxicillin","authors":"E. G. Kulapina, R. K. Mursalov","doi":"10.18500/1816-9775-2022-22-1-16-25","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-16-25","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90485670","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
Evolutionary role of apomixis: S. S. Khokhlov’s hypothesis in the light of modern data 无融合的进化作用:从现代资料看S. S. Khokhlov的假说
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-89-98
O. I. Yudakova, E. Kaybeleva
{"title":"Evolutionary role of apomixis: S. S. Khokhlov’s hypothesis in the light of modern data","authors":"O. I. Yudakova, E. Kaybeleva","doi":"10.18500/1816-9775-2022-22-1-89-98","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-89-98","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87763148","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
Morphometry and seed productivity of some representatives of the Lamiaceae family of a plot of medicinal plants of the Botanical Garden of the Orеnburg State University orobernburg州立大学植物园药用植物片地lamiiaceae一些代表性植物的形态测定学和种子产量
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-74-81
E. V. Pikalova
{"title":"Morphometry and seed productivity of some representatives of the Lamiaceae family of a plot of medicinal plants of the Botanical Garden of the Orеnburg State University","authors":"E. V. Pikalova","doi":"10.18500/1816-9775-2022-22-1-74-81","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-74-81","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80426396","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
Species composition of microorganisms of the trophic chain: Cereal plants – aphids 营养链微生物的种类组成:谷类植物-蚜虫
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-99-109
A. .. Dymnich, E. Glinskaya
{"title":"Species composition of microorganisms of the trophic chain: Cereal plants – aphids","authors":"A. .. Dymnich, E. Glinskaya","doi":"10.18500/1816-9775-2022-22-1-99-109","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-99-109","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75226338","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 and structural features of 5-(4-bromophenyl)-3-((6-amino-2-mercaptopyrimidine)-4-amino))methylidene)-3Н-furan-2-one 5-(4-溴苯基)-3-((6-氨基-2-巯基嘧啶)-4-氨基))亚甲基)-3Н-furan-2-one的合成及结构特征
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2022-03-22 DOI: 10.18500/1816-9775-2022-22-1-4-8
А. S. Tikhomolova, O. A. Mayorova, A. Egorova
{"title":"Synthesis and structural features of 5-(4-bromophenyl)-3-((6-amino-2-mercaptopyrimidine)-4-amino))methylidene)-3Н-furan-2-one","authors":"А. S. Tikhomolova, O. A. Mayorova, A. Egorova","doi":"10.18500/1816-9775-2022-22-1-4-8","DOIUrl":"https://doi.org/10.18500/1816-9775-2022-22-1-4-8","url":null,"abstract":"","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72659760","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
The prospect of using Shewhart control charts in assessing the quality of ionometric measurements by the method of adding a sample to a standard 用休哈特控制图评价离子计量测量质量的前景
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2021-12-16 DOI: 10.18500/1816-9775-2021-21-4-399-404
V. M. Shatunov, A. I. Fokina, T. Ashikhmina
{"title":"The prospect of using Shewhart control charts in assessing the quality of ionometric measurements by the method of adding a sample to a standard","authors":"V. M. Shatunov, A. I. Fokina, T. Ashikhmina","doi":"10.18500/1816-9775-2021-21-4-399-404","DOIUrl":"https://doi.org/10.18500/1816-9775-2021-21-4-399-404","url":null,"abstract":"Modern methods of quantitative physical and chemical measurements should necessarily include procedures for quality control of research results. Recently, the procedure for quality control of measurements using control charts is gaining particular popularity in the practice of analytical measurements. To date, the methods of potentiometric studies operating in the territory of the Russian Federation, in most cases, do not include quality control using this control procedure. However, despite the complexity of the implementation and interpretation of its results, it is the use of control charts that allows you to control the quality of ionometric measurements. This is especially important for potentiometric determinations based on the addition method, since the instability of the slope of the electrode function and its deviation significantly contribute to the uncertainty of the measurement results. This article presents the main results of evaluating the use of the Shewhart control chart method for monitoring the repeatability and accuracy of measurement results. The measurement results have been obtained using an improved method of quantitative potentiometric determination of high concentrations (more than 1 gm/cdm) of ammonium ions by the method of adding a sample to the standard. In addition, an experimental substantiation of the fact that the value of the slope of the electrode function significantly affects the accuracy of measurements by the addition method has been presented. It has been revealed that when the angular coefficient of the electrode function is more than 62 mV/pNH4+ at (25±5)°C, deviations of the measurement results from the control standard by more than 50% are observed. It has been found that at (25±5)°С the most accurate results of quantitative determination are achieved when the angular coefficient of the electrode function is from 54 mV/pNH4+ to 62 mV/pNH4+ inclusive.","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81236247","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
Features of the species composition and structure of fish communities in small anthropogenic reservoirs with different content of dissolved mineral nitrogen 不同溶解矿物氮含量的小型人为水库鱼类群落组成及结构特征
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology Pub Date : 2021-12-16 DOI: 10.18500/1816-9775-2021-21-4-466-477
B. G. Kotegov
{"title":"Features of the species composition and structure of fish communities in small anthropogenic reservoirs with different content of dissolved mineral nitrogen","authors":"B. G. Kotegov","doi":"10.18500/1816-9775-2021-21-4-466-477","DOIUrl":"https://doi.org/10.18500/1816-9775-2021-21-4-466-477","url":null,"abstract":"In 22 small anthropogenic reservoirs with an area of 0.4 to 62 ha located in the territory of the Udmurt Republic, individuals of different fish species were captured and water samples were taken in late spring for analysis of NO3–, NO2– and NH4+ content. In many reservoirs, concentrations of ammonium exceed the maximum permissible according to the fishing standards for water quality, and in some this is also the case with nitrites. Ponds with zooplanktophages (bleak Alburnus alburnus (L.) and belica Leucaspius delineates (Heckel)) present in fish communities were statistically significantly different in the increased content of total dissolved mineral nitrogen from reservoirs where these two fish species were not registered. In perch and roach reservoirs, the numerical proportion of river perch Perca fluviatilis was negatively and statistically significantly related to the level of their contamination with nitrogen ionic forms.","PeriodicalId":14627,"journal":{"name":"Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90567931","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
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