{"title":"Enhanced Optical Absorption and Low Energy Gap of SiC-Nanostructure-Doped PVA/PVP Blend","authors":"Haitham Ahmed Jawad, Ahmed Hashim","doi":"10.15407/nnn.20.04.963","DOIUrl":"https://doi.org/10.15407/nnn.20.04.963","url":null,"abstract":"In present work","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43106521","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}
The article presents the prospects for nanomaterials’ application in medicine, biology, and pharmacology. The possibility of nanoparticles’ usage as contrast agents for tomography, luminophores, and biologically active substances is shown. At the same time, the potential toxic effect on living organisms of the concerned substances is indicated, in particular, the possibility of free-radicals’ formation. These substances are capable of triggering the chain reaction of free-radicals’ transformations, which can result in the development of pathological processes. To clarify this issue, effects of the complex substance composed of lanthanides’ nanoparticles on the biochemical parameters of free-radical processes have been studied in experiment. The results show that infusion of the preparation induces an increase in the content of diene conjugates and TBA-reactive products. Moreover, the content of sulfhydryl groups reduces significantly as compared with the intact group. Catalase activity also decreases, while superoxide dismutase activity increases. Thus, the results show that the substance concerned affects the processes of free-radical oxidation. However, the effect depends on a number of factors, and additional studies are needed to determine the contribution of each of them.
{"title":"The State of Antioxidant Systems and Lipids’ Peroxidation Under the Action of Complex Substances","authors":"V. O. Vekshyn, L. P. Abramova, E. R. Grabovetska","doi":"10.15407/nnn.20.04.1017","DOIUrl":"https://doi.org/10.15407/nnn.20.04.1017","url":null,"abstract":"The article presents the prospects for nanomaterials’ application in medicine, biology, and pharmacology. The possibility of nanoparticles’ usage as contrast agents for tomography, luminophores, and biologically active substances is shown. At the same time, the potential toxic effect on living organisms of the concerned substances is indicated, in particular, the possibility of free-radicals’ formation. These substances are capable of triggering the chain reaction of free-radicals’ transformations, which can result in the development of pathological processes. To clarify this issue, effects of the complex substance composed of lanthanides’ nanoparticles on the biochemical parameters of free-radical processes have been studied in experiment. The results show that infusion of the preparation induces an increase in the content of diene conjugates and TBA-reactive products. Moreover, the content of sulfhydryl groups reduces significantly as compared with the intact group. Catalase activity also decreases, while superoxide dismutase activity increases. Thus, the results show that the substance concerned affects the processes of free-radical oxidation. However, the effect depends on a number of factors, and additional studies are needed to determine the contribution of each of them.","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48248288","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}
This paper investigates recent developments in the field of zinc oxide var-istors’ development using nanocomposite materials. In addition, the materials under discussion have attracted academic and industrial interests due to their dramatic improvement in characteristics at nanofiller contents. Moreover, the varieties and forms of zinc oxide varistors, as well as the structure and properties of zinc oxide varistors, are discussed in this article. Zinc oxide varistors have traditionally been filled with synthetic or natural inorganic compounds to improve their properties or simply to save cost. In addition, this paper investigates the performance evaluation of zinc oxide varistors by incorporating alkaline-earth and rare-earth metal nanofillers. These applications require multifunctionality in a single material, which is rare in zinc oxide varistors. Zinc oxide varistors incorporating with other materials is a cost-effective technique to create multi-functional materials. The property improvement in nanocomposite systems, where the fillers typically have nanometre-scale dimensions, probably occurs with a tradeoff
{"title":"Study of Zinc Oxide Varistors by Incorporating Alkaline-Earth and Rare-Earth Metal Nanofillers","authors":"Parvathy Bhaskar, M. G. Veena, B. S. Madhukar","doi":"10.15407/nnn.20.04.907","DOIUrl":"https://doi.org/10.15407/nnn.20.04.907","url":null,"abstract":"This paper investigates recent developments in the field of zinc oxide var-istors’ development using nanocomposite materials. In addition, the materials under discussion have attracted academic and industrial interests due to their dramatic improvement in characteristics at nanofiller contents. Moreover, the varieties and forms of zinc oxide varistors, as well as the structure and properties of zinc oxide varistors, are discussed in this article. Zinc oxide varistors have traditionally been filled with synthetic or natural inorganic compounds to improve their properties or simply to save cost. In addition, this paper investigates the performance evaluation of zinc oxide varistors by incorporating alkaline-earth and rare-earth metal nanofillers. These applications require multifunctionality in a single material, which is rare in zinc oxide varistors. Zinc oxide varistors incorporating with other materials is a cost-effective technique to create multi-functional materials. The property improvement in nanocomposite systems, where the fillers typically have nanometre-scale dimensions, probably occurs with a tradeoff","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48782765","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}
{"title":"Synthesis and Morphology Characteristics of PMMA/CeO2/SiO2 Nanostructures for Antibacterial Application","authors":"Ola Basim Fadil, Ahmed Hashim","doi":"10.15407/nnn.20.04.1029","DOIUrl":"https://doi.org/10.15407/nnn.20.04.1029","url":null,"abstract":"In this work","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45411116","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}
{"title":"Fabrication of NiO–In2O3-Nanoparticles-Doped Organic Polymer Films for Antibacterial Applications","authors":"","doi":"10.15407/nnn.20.03.821","DOIUrl":"https://doi.org/10.15407/nnn.20.03.821","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41554270","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}
{"title":"Peculiarities of the Formation of Carbon Nanotubes from the Products of the Air Conversion of Methane by the Method of Chemical Deposition","authors":"","doi":"10.15407/nnn.20.03.715","DOIUrl":"https://doi.org/10.15407/nnn.20.03.715","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45968053","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}
{"title":"Experimental Measurement of Film Thicknesses on a Static Film Former and a Film Centrifugal Sprayer","authors":"","doi":"10.15407/nnn.20.03.657","DOIUrl":"https://doi.org/10.15407/nnn.20.03.657","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67132679","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}
{"title":"Strengthening of the Pipe-Pressing Tool for Production of Corrosion-Resistant Pipes by Drawing Wear-Resistant Nanocoverings","authors":"","doi":"10.15407/nnn.20.03.693","DOIUrl":"https://doi.org/10.15407/nnn.20.03.693","url":null,"abstract":"","PeriodicalId":18830,"journal":{"name":"Nanosistemi, Nanomateriali, Nanotehnologii","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48641995","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}
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