Chemistry Proceedings最新文献_第2页

Emphasizing the General Methods for the Use of the Natural Mineral Waters Located around the Salt Mines, according to Their Therapeutic Properties 强调一般方法，利用天然矿泉水位于盐矿周围，根据他们的治疗特性

Chemistry Proceedings Pub Date : 2022-02-28 DOI: 10.3390/chemproc2022007003

A. Ionescu, A. Casarica, R. Stoica, Nicoleta Ene

引用次数: 0

Silver Nanoparticles Mediated by Natural Extracts Recovered from Wastes and By-Products 废物及其副产品天然提取物介导的纳米银

Chemistry Proceedings Pub Date : 2022-02-28 DOI: 10.3390/chemproc2022007007

C. Moisa, A. Lupitu, A. Csakvari, D. Radu, D. Chambre, L. Copolovici, D. Copolovici

引用次数: 0

Microbes in Saline Environments and Their Potential Applications in Sustainable Agriculture 盐渍环境中的微生物及其在可持续农业中的潜在应用

Chemistry Proceedings Pub Date : 2022-02-28 DOI: 10.3390/chemproc2022007004

C. Tomulescu

引用次数: 0

Chitosan-Based Bactericidal Interpenetrated Hydrogels 壳聚糖基杀菌互渗透水凝胶

Chemistry Proceedings Pub Date : 2022-02-28 DOI: 10.3390/chemproc2022007012

I. Neblea, Andreea Olaru, A. Chiriac, A. Zaharia, Razvan-Edward Botez, Mircea Teodorescu, A. Sârbu, T. Iordache

引用次数: 0

Drift Compensation of the Electronic Nose in the Development of Instruments for Out-of-Laboratory Analysis 实验室外分析仪器研制中电子鼻的漂移补偿

Chemistry Proceedings Pub Date : 2022-01-01 DOI: 10.3390/csac2021-10464

A. Shuba, T. Kuchmenko, D. Menzhulina

{"title":"Drift Compensation of the Electronic Nose in the Development of Instruments for Out-of-Laboratory Analysis","authors":"A. Shuba, T. Kuchmenko, D. Menzhulina","doi":"10.3390/csac2021-10464","DOIUrl":"https://doi.org/10.3390/csac2021-10464","url":null,"abstract":"A technique was developed to evaluate and compensate for the drift of eight mass-sensitive sensors in an open detection cell in order to estimate the influence of external factors (temperature, changes in the chemical composition of the background) on the out-of-laboratory analysis of biosamples. The daily internal standardization of the system is an effective way to compensate for the sensor signal drift when the sorption properties of sensitive coatings change during their long-term, intensive operation. In this study, distilled water was proposed as a standard for water matrix-based biosamples (blood, exhaled breath condensate, urine, etc.). Further, internal standardization was based on daily calculation of the specific sensor signals by dividing the sensor signals for the biosample according to the corresponding averaged values obtained from three to five standard measurements. The stability of the sensor array operation was estimated using the theory of statistical process control (exponentially weighted moving average control charts) based on the specific signal of the sensor array. The control limits for the statistical quantity of the central tendency for each sensor and the whole array, as well as the variations of the sensor signals, were determined. The average times required for signal and run lengths, for the purpose of statistically substantiated monitoring of the electronic nose’s stability, were calculated. Based on an analysis of the tendency and variations in sensor signals during 3 months of operation, a technique was formulated to control the stability of the sensor array for the out-of-laboratory analysis of the biosamples. This approach was successfully verified by classifying the results of the analysis of the blood and water samples obtained for this period. The proposed technique can be introduced into the software algorithm of the electronic nose, which will improve decision-making during the long-term monitoring of health conditions in humans and animals.","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80942172","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

Electrochemical Measurement System for Chlorides in Drinking and Wastewater 饮用水和废水中氯化物的电化学测量系统

Chemistry Proceedings Pub Date : 2021-12-17 DOI: 10.3390/chemproc2021005046

Diana A. Toriz-Gutiérrez, H. Ramírez-Gasca, Luis E. Cárdenas-Galindo, E. Gallegos-Arellano

{"title":"Electrochemical Measurement System for Chlorides in Drinking and Wastewater","authors":"Diana A. Toriz-Gutiérrez, H. Ramírez-Gasca, Luis E. Cárdenas-Galindo, E. Gallegos-Arellano","doi":"10.3390/chemproc2021005046","DOIUrl":"https://doi.org/10.3390/chemproc2021005046","url":null,"abstract":"This paper presents a system for the measurement of chlorides in drinking and wastewater, based on an electrochemical process using a selective electrode as a transducer, which was developed by this group. The measurement for the concentration is carried out by introducing the implemented electrode (considered as reference) in the sample that will be analyzed; then a current is passed producing a potential difference in the system. Different aqueous solutions of sodium chloride (NaCl) were used, ranging between 35 and 3546 µg of chloride ions (Cl−). As a data acquisition and monitoring system for the analysis, an ATmega 328P microcontroller was used as the main capture element for subsequent interpretation through graphics. The experimental results show that it was possible to detect a potential difference in the electrochemical measurement system that corresponded to 35 µg of chloride ions (Cl−), making clear the detection process and the selectivity of chloride ions. It is important to mention that with this measurement system and the applied methodology, results are obtained in real time using a small sample volume and without generate ng extra liquid waste, compared to the application of the traditional analytical titrimetric method. Finally, this chloride measurement system is inexpensive and can be used in drinking and wastewater measurements.","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76859792","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

Precipitation of Iron Oxide in Hydrogel with Superparamagnetic and Stimuli-Responsive Properties 具有超顺磁性和刺激响应特性的水凝胶中氧化铁的沉淀

Chemistry Proceedings Pub Date : 2021-12-17 DOI: 10.3390/chemproc2021005049

A. Mieting, Si-Ying Wang, Mia Schliephake, D. Franke, M. Guenther, S. Odenbach, G. Gerlach

引用次数: 0

Polysaccharide-Based Organic Frameworks with Embedded Nanoparticles: Advanced SPR Study on the Antiviral Activity of Gold Composites Derived from Glucuronoxylomannan 嵌入纳米颗粒的基于多糖的有机框架:葡萄糖醛酸甘露聚糖衍生金复合物抗病毒活性的高级SPR研究

Chemistry Proceedings Pub Date : 2021-12-15 DOI: 10.3390/csac2021-10475

P. Boltovets, S. Kravchenko, Oleksiy Kovalenko, B. Snopok

{"title":"Polysaccharide-Based Organic Frameworks with Embedded Nanoparticles: Advanced SPR Study on the Antiviral Activity of Gold Composites Derived from Glucuronoxylomannan","authors":"P. Boltovets, S. Kravchenko, Oleksiy Kovalenko, B. Snopok","doi":"10.3390/csac2021-10475","DOIUrl":"https://doi.org/10.3390/csac2021-10475","url":null,"abstract":"The nanosized composites based on the natural polysaccharides and nanoparticles of noble metals are promising candidates for efficient antiviral drugs. However, the complexity of such objects, their diversity and novelty necessitate the development of new analytical methods for investigation of such supramolecular architectures. In this work, which was recently developed for SPR-based instrumentation, the concept of variative refraction (DViFA, density variations in fixed architectures) was used to elucidate the mechanism of the antiviral action of a polysaccharide with gold nanoparticles grown in it. The SPR data were confirmed by direct biological tests: the effect of the native polysaccharide glucuronoxylomannan (GXM) obtained from the fungus Ganoderma adspersum and gold nanocomposites thereon on the infection of Datura stramonium with tobacco mosaic virus (TMV) was investigated. Both drugs suppress the development of viral infections. However, if for high concentrations the characteristic activity of the composite is somewhat lower than for GXM, then with an increase in dilution, the effectiveness of the composite increases significantly, up to a twofold excess. It has been reasonably suggested that the mechanism of antiviral action is associated with the formation of clusters of viruses that are no longer capable of infecting cells.","PeriodicalId":9815,"journal":{"name":"Chemistry Proceedings","volume":"80 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87967628","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

1st Spring Virtual Meeting on Medicinal Chemistry 第一届春季药物化学虚拟会议

Chemistry Proceedings Pub Date : 2021-09-15 DOI: 10.3390/chemproc2021004001

M. E. Sousa, M. M. Marques, M. Faustino

引用次数: 0

Electrochemical Detection of Fenthion Insecticide in Olive Oils by a Sensitive Non-Enzymatic Biomimetic Sensor Enhanced with Metal Nanoparticles 金属纳米颗粒增强非酶仿生灵敏传感器电化学检测橄榄油中倍硫磷杀虫剂

Chemistry Proceedings Pub Date : 2021-08-17 DOI: 10.3390/csac2021-10773

Youssra Aghoutane, N. E. Bari, Zoubida Laghrari, B. Bouchikhi

引用次数: 2