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Clay Ceramic Filter for Water Treatment 水处理用粘土陶瓷过滤器
Materials Science and Applied Chemistry Pub Date : 2017-05-01 DOI: 10.1515/msac-2017-0011
E. Zereffa, Tesfaye Betela Bekalo
{"title":"Clay Ceramic Filter for Water Treatment","authors":"E. Zereffa, Tesfaye Betela Bekalo","doi":"10.1515/msac-2017-0011","DOIUrl":"https://doi.org/10.1515/msac-2017-0011","url":null,"abstract":"Abstract Ceramic water filters were prepared from different proportions of kaolin and soft wood and sintered at 900 °C, 950 °C, and 1000 °C. The flow rate, conductivity, pH of filtered water and removal efficiency (microbial, water hardness agent’s, nitrite and turbidity) were analysed. The ceramic filter with 15 % saw dust, 80 % clay and 5 % grog that was fired at temperature of 950 °C or 1000 °C showed the best removal efficiency. Statistical ANOVA tests showed a significant difference between ceramic filters with various compositions in their removal efficiencies.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"10 1","pages":"69 - 74"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74267944","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: 46
Synthesis of 4-Alkylamino-2-Triazolylquinazolines
Materials Science and Applied Chemistry Pub Date : 2017-05-01 DOI: 10.1515/msac-2017-0009
Svetlana Marija Goliškina, D. Cirule, Ē. Bizdēna, M. Turks
{"title":"Synthesis of 4-Alkylamino-2-Triazolylquinazolines","authors":"Svetlana Marija Goliškina, D. Cirule, Ē. Bizdēna, M. Turks","doi":"10.1515/msac-2017-0009","DOIUrl":"https://doi.org/10.1515/msac-2017-0009","url":null,"abstract":"Abstract 5-Alkylamino derivatives of tetrazolo[1,5-a]quinazoline were obtained with high regioselectivity in the reaction of 5-azidotetrazolo[1,5-a]quinazoline (formally, 2,4-diazidoquinazoline) with long chain alkylamines. The obtained 5-aminoquinazoline derivatives were used in a copper catalyzed azide-alkyne 1,3-dipolar cycloaddition reaction to obtain series of 4-(alkylamino-2-(1,2,3-triazol-1-yl)quinazolines.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"5 1","pages":"59 - 62"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90926469","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
Staicele Paint Manufactory, Ochre Deposit of Reciems: A Retrospective Journey Through the History of Staicele Paint Manufactory and Evaluation of Production Technologies Staicele油漆厂，赭石矿床:回顾Staicele油漆厂的历史和生产技术的评价
Materials Science and Applied Chemistry Pub Date : 2017-01-01 DOI: 10.1515/msac-2017-0010
Aigars Kokins, J. Kostjukovs
{"title":"Staicele Paint Manufactory, Ochre Deposit of Reciems: A Retrospective Journey Through the History of Staicele Paint Manufactory and Evaluation of Production Technologies","authors":"Aigars Kokins, J. Kostjukovs","doi":"10.1515/msac-2017-0010","DOIUrl":"https://doi.org/10.1515/msac-2017-0010","url":null,"abstract":"Abstract A historical paint manufactory in Staicele, Latvia (1967), was using local resources – colour earth. Oil paint composition consisted of pigment, drying oil, varnish and siccative. It had two different tones that are obtained by using natural colour earth pigments: ochre and its burnt form (burnt umber). Pigment quality was analyzed using historical documents, modern pigment tests, and manufactory technology. Chemical composition, particle size, and pigment tone were determined, and the coating ability was calculated. A palette of oil paints based on the historical recipes for restoring Staicele oil paints was created. Properties of colour earth pigments were compared to specimens taken from the local source of iron that is located near the old paint factory. Results provide a historical and technological insight as well as insight in the properties of the basic paint composition.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"83 3-4","pages":"63 - 68"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72557822","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
Reversed-Phase High-Performance Liquid Chromatography Analysis of β-Lactoglobulin and α-Lactalbumin in Different Types of Milk 不同类型牛奶中β-乳球蛋白和α-乳蛋白的反相高效液相色谱分析
Materials Science and Applied Chemistry Pub Date : 2016-05-01 DOI: 10.1515/msac-2016-0007
O. Rotkāja, Jeļena Goluško, P. Mekšs
{"title":"Reversed-Phase High-Performance Liquid Chromatography Analysis of β-Lactoglobulin and α-Lactalbumin in Different Types of Milk","authors":"O. Rotkāja, Jeļena Goluško, P. Mekšs","doi":"10.1515/msac-2016-0007","DOIUrl":"https://doi.org/10.1515/msac-2016-0007","url":null,"abstract":"Abstract The aim of this study was to detect major whey proteins α-lactalbumin and β-lactoglobulin by reversed-phase high-performance liquid chromatography (RP-HPLC). RPHPLC methods were developed using the column YMC Pack-C4, which enabled the separation of whey proteins within 30 min. Mobile phase was acetonitrile/water/0.1% trifluoroacetic acid (TFA) with gradient elution, flow rate was 1.0 mL·min−1, and the detection wavelength was 210 nm. Column temperature was 40°C and injection volume was 20 μL. Milk samples contained α-lactalbumin and total β-lactoglobulin: No. 1 - 1500 mg·L−1 and 3600 mg·L−1; No. 2 - no α-lactalbumin and 450 mg·L−1 total β-lactoglobulin; No. 3 - 800 mg·L−1 and 94 mg·L−1, respectively.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"33 1","pages":"36 - 39"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81325594","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: 5
Mechanical Properties and Biocompatibility of a Biomaterial Based on Deproteinized Hydroxyapatite and Endodentine Cement 脱蛋白羟基磷灰石-牙本质骨水泥生物材料的力学性能及生物相容性研究
Materials Science and Applied Chemistry Pub Date : 2016-05-01 DOI: 10.1515/msac-2016-0006
L. Rupeks, V. Filipenkov, I. Knēts, V. Vītiņš, M. Sokolova, L. Stīpniece, M. Pilmane
{"title":"Mechanical Properties and Biocompatibility of a Biomaterial Based on Deproteinized Hydroxyapatite and Endodentine Cement","authors":"L. Rupeks, V. Filipenkov, I. Knēts, V. Vītiņš, M. Sokolova, L. Stīpniece, M. Pilmane","doi":"10.1515/msac-2016-0006","DOIUrl":"https://doi.org/10.1515/msac-2016-0006","url":null,"abstract":"Abstract Hydroxyapatite is used for bone reconstruction, in order to improve its mechanical properties different substances can be added. In our study new biomaterial is created from deproteinised hydroxyaptite and endodentic cement, its mechanical properties were tested. Material was implanted subcutaneous in rats, then histological and biocompatability tests were performed. Results indicate that stuff has good mechanical properties, short setting time and gradual resorption creating porosity and ability to integrate in bone.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"32 1","pages":"31 - 35"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89379733","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: 3
Comparison of Tandem Quadrupole Mass Spectrometry and Orbitrap High Resolution Mass Spectrometry for Analysis of Pharmaceutical Residues in Biota Samples 串联四极杆质谱与轨道阱高分辨率质谱分析生物样品中药物残留的比较
Materials Science and Applied Chemistry Pub Date : 2016-05-01 DOI: 10.1515/msac-2016-0001
I. Reinholds, I. Pugajeva, V. Bartkevičs
{"title":"Comparison of Tandem Quadrupole Mass Spectrometry and Orbitrap High Resolution Mass Spectrometry for Analysis of Pharmaceutical Residues in Biota Samples","authors":"I. Reinholds, I. Pugajeva, V. Bartkevičs","doi":"10.1515/msac-2016-0001","DOIUrl":"https://doi.org/10.1515/msac-2016-0001","url":null,"abstract":"Abstract This research demonstrates the development of reliable multi-component methods for the detection of antibiotic residues in environmental biota. The efficiency of analytical performance of ultra high performance liquid chromatography (UHPLC) techniques with triple quadrupole (QqQ-MS/MS) and Orbitrap high-resolution mass spectrometry (Orbitrap-HRMS) detectors is discussed. Antibiotic residues in biota samples collected in Latvia were analysed. The contamination status was determined as rather low within acceptable levels set by the European Union Regulations.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"24 1","pages":"10 - 5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89093980","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: 3
Synthesis and Characterization of Cationic Poly(N-[3-Hexyldimethyl-Aminopropyl] Methacrylamide Bromide) Water-Soluble Polymer 阳离子聚(N-[3-己基二甲基-氨基丙基]甲基丙烯酰胺溴)水溶性聚合物的合成与表征
Materials Science and Applied Chemistry Pub Date : 2016-05-01 DOI: 10.1515/msac-2016-0008
Wahiba Chaibi, Asma Ziane, Zouaoui Benzehaim, Lamia Bennabi, K. Guemra
{"title":"Synthesis and Characterization of Cationic Poly(N-[3-Hexyldimethyl-Aminopropyl] Methacrylamide Bromide) Water-Soluble Polymer","authors":"Wahiba Chaibi, Asma Ziane, Zouaoui Benzehaim, Lamia Bennabi, K. Guemra","doi":"10.1515/msac-2016-0008","DOIUrl":"https://doi.org/10.1515/msac-2016-0008","url":null,"abstract":"Abstract Water-soluble polymer, cationic poly(N-[3-hexyldimethyl-aminopropyl] methacrylamide bromide) (PHDAPMAA), is synthesized by radical polymerization and studied in terms of its solubility, viscosity, surface tension and conductivity. Viscometry and surface tension measurements confirmed that intramolecular hydrophobic microdomains were formed by the pendent alkyl chains. Conductivity of cationic polymer in aqueous solution was determined. Variation of conductivity versus concentration in investigated system exhibits a typical polyelectrolyte behaviour.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"47 1","pages":"40 - 44"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79115930","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
Comparison of Paraffin and Diesel Oil as Cultivation Medium Supplements for Preparing a Hydrocarbon-Degrading Bacterial Biomass 石蜡和柴油作为培养基添加剂制备烃类降解菌生物量的比较
Materials Science and Applied Chemistry Pub Date : 2016-05-01 DOI: 10.1515/msac-2016-0002
Eduards Dokukins, O. Muter
{"title":"Comparison of Paraffin and Diesel Oil as Cultivation Medium Supplements for Preparing a Hydrocarbon-Degrading Bacterial Biomass","authors":"Eduards Dokukins, O. Muter","doi":"10.1515/msac-2016-0002","DOIUrl":"https://doi.org/10.1515/msac-2016-0002","url":null,"abstract":"Abstract The effect of liquid paraffin and diesel oil as nutrient amendments for hydrocarbon-degrading bacteria was compared. Different parameters were analyzed - optical density of bacterial suspension, oxygen consumption by biomass, morphology of bacteria, etc. In some experiments the paraffin was more preferable for microorganisms, but in other tests the results for both substances were similar. The influence of the comparable substances strongly depends on cultivation conditions.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"22 1","pages":"11 - 16"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82420511","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
Floating Ceramics vs. Floating Oils: Search for Appropriate Conditions 浮动陶瓷与浮动油:寻找合适的条件
Materials Science and Applied Chemistry Pub Date : 2016-05-01 DOI: 10.1515/msac-2016-0003
O. Muter, A. Bērziņš, T. Selga, R. Švinka, V. Švinka
{"title":"Floating Ceramics vs. Floating Oils: Search for Appropriate Conditions","authors":"O. Muter, A. Bērziņš, T. Selga, R. Švinka, V. Švinka","doi":"10.1515/msac-2016-0003","DOIUrl":"https://doi.org/10.1515/msac-2016-0003","url":null,"abstract":"Abstract Ceramic granules fabricated from Quaternary clay at 1200°C were tested for their flotation ability in a water model system containing silicone oil. The presence of oil in the liquid phase improved flotation of granules, probably due to sorption of oil by ceramics. Coating of granules with SiO2 resulted in decreased flotation ability, irrespectively of the presence of oil. Granules were shown to be appropriate for bacterial colonization.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"65 1","pages":"17 - 21"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76286667","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
Obtaining and Organophilisation of Smectite Clays with Reduced Iron Oxide Content 氧化铁含量降低的蒙脱石粘土的制备及有机干燥
Materials Science and Applied Chemistry Pub Date : 2016-01-01 DOI: 10.1515/msac-2016-0004
Jūlija Karasa, K. Ivanova
{"title":"Obtaining and Organophilisation of Smectite Clays with Reduced Iron Oxide Content","authors":"Jūlija Karasa, K. Ivanova","doi":"10.1515/msac-2016-0004","DOIUrl":"https://doi.org/10.1515/msac-2016-0004","url":null,"abstract":"Abstract Raw clays from the Baltic region are characterized as smectite containing clays with significant amount of naturally occurring impurities that limiting the potential applications of crude Baltic clay resources. Purification of clay samples from Šaltiškių deposit (Venta basin) was carried out by varied concentration hydrochloric acid solutions and resulted in fine removal of carbonates and iron oxide. The main idea of this work is to widen the possible applications of local clay resources providing a new type of raw material for further organoclay production.","PeriodicalId":18239,"journal":{"name":"Materials Science and Applied Chemistry","volume":"4 1","pages":"22 - 25"},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78605792","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
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