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The enthalpies of mixing of ternary liquid Ag-Ca-Ge alloys 三元液态Ag-Ca-Ge合金的混合焓
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-07-01 DOI: 10.17721/fujcv9i1p51-62
N. Kotova, M. Ivanov, Natalia Usenko
{"title":"The enthalpies of mixing of ternary liquid Ag-Ca-Ge alloys","authors":"N. Kotova, M. Ivanov, Natalia Usenko","doi":"10.17721/fujcv9i1p51-62","DOIUrl":"https://doi.org/10.17721/fujcv9i1p51-62","url":null,"abstract":"Partial and integral enthalpies of mixing of the ternary Ag–Ca–Ge melts were determined for the first time by the high-temperature isoperibolic calorimetry at 1300–1550 K. The experiments were performed for six sections with a constant ratio of two components up to the molar fraction of the third component equal to 0.3. The enthalpies of mixing in this ternary system are exothermic values which increase in absolute value from the Ag corner of the concentration triangle towards the constituent binary Ca–Ge system. The minimum value of the integral enthalpy of mixing was obtained for Ca0.6Ge0.4 composition of the Ca–Ge binary system (about –58.00 kJ mol–1). The enthalpies of mixing of the ternary Ag–Ca–Ge melts are calculated for the whole concentration triangle by the Redlich-Kister-Muggianu method, taking into account the term of specific ternary interaction defined from our experimental data. The topology of the isoenthalpies of mixing is determined.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47651541","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
Chemical characteristics and health risk assessment of potential toxic elementsin atmospheric PM10 around Ashaka cement factory, Gombe, Nigeria 尼日利亚贡贝Ashaka水泥厂周围大气中潜在有毒元素PM10的化学特征及健康风险评估
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p72-82
C. Okoye, C. Okoye, J. Asegbeloyin, J. Ihedioha
{"title":"Chemical characteristics and health risk assessment of potential toxic elementsin atmospheric PM10 around Ashaka cement factory, Gombe, Nigeria","authors":"C. Okoye, C. Okoye, J. Asegbeloyin, J. Ihedioha","doi":"10.17721/fujcv9i2p72-82","DOIUrl":"https://doi.org/10.17721/fujcv9i2p72-82","url":null,"abstract":"The study determined the ambient mass concentrations, chemical composition and health risks associated with PM10 around Ashaka cement factory, Gombe, Nigeria. The samples were collected for the period (2019-2020). A total of 60 PM10 samples were collected and analyzed for seventeen elements using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). The data collected were analyzed for descriptive and inferential statistics. The health risk was analyzed for hazard quotient (HQ), hazard index (HI) and cancer risk (CR). The average annual PM10 mass concentrations were found to be higher than the annual limit value for air quality standards (40 μgm-3). The HI estimated were >1 for children, while CR values of Cd, Ni, As and Cr for children and Cr for adults were higher than the acceptable value 10-6, indicating children are more probable to develop cancer than adults.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"29 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67434331","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
Biological Evaluation of 3-Aminoisoquinolin-1(2H)-one Derivatives as Potential Anticancer Agents Authors Lyudmyla Potikha 3-氨基异喹啉-1(2H)- 1衍生物作为潜在抗癌药物的生物学评价
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p52-63
L. Potikha, V. Brovarets, V. Zhirnov
{"title":"Biological Evaluation of 3-Aminoisoquinolin-1(2H)-one Derivatives as Potential Anticancer Agents Authors Lyudmyla Potikha","authors":"L. Potikha, V. Brovarets, V. Zhirnov","doi":"10.17721/fujcv9i2p52-63","DOIUrl":"https://doi.org/10.17721/fujcv9i2p52-63","url":null,"abstract":"Anticancer activity of a series of 3-(hetaryl/aryl)amino substituted isoquinolin-1(2H)-ones has been studied within the international scientific program “NCI-60 Human Tumor Cell Lines Screen”. Screening was performed in vitro on 60 cell lines of lungs, kidneys, CNS, ovaries, prostate, and breast cancer, epithelial cancer, leukemia, and melanoma. The most effective compounds were those with thiazolyl or pyrazolyl substituent at 3-amino group and had no substituents at C(4) of the isoquinoline cycle. We identified a new lead compound, 3-(1,3-thiazol-2-ylamino)isoquinolin-1(2H)-one 12, which effectively prevents tumor cell growth (average lg GI50 = -5.18, lg TGI = -4.1, lg LC50 > -4.0) with good selectivity.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67434132","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
Difference spectrophotometric method for the determination of Fluphenazine hydrochloride in tablets using peroxomonosulfate 差示分光光度法测定盐酸氟非那嗪片的含量
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p64-71
M. Blazheyevskiy, V. Moroz, Olena Mozgova
{"title":"Difference spectrophotometric method for the determination of Fluphenazine hydrochloride in tablets using peroxomonosulfate","authors":"M. Blazheyevskiy, V. Moroz, Olena Mozgova","doi":"10.17721/fujcv9i2p64-71","DOIUrl":"https://doi.org/10.17721/fujcv9i2p64-71","url":null,"abstract":"The oxidative derivatization method using potassium hydrogenperoxomonosulfate for the indirect spectrophotometric determination of Fluphenazine hydrochloride is presented. Potassium hydrogenperoxomonosulfate is introduced as a derivatizing agent for Fluphenazine hydrochloride, yielding the sulfoxide. This reaction product was successfully used for the spectrophotometric determination of the Fluphenazine hydrochloride. The UV spectroscopic detection of the sulfoxide proved to be a more robust and sensitive method. The elaborated method allowed the determination of Fluphenazine hydrochloride in the concentration range of 0.2-30 µg mL-1. The molar absorptivity at 349 nm is 5.6×103 (dm3cm-1mol-1). The limit of quantification, LOQ (10S) is 0.24 µg/mL. A new spectrophotometric technique was developed and the possibility of quantitative determination of Fluphenazine hydrochloride in tablets 5.0 mg was demonstrated. The present method is precise, accurate and excipients did not interfere. RSD for Fluphenazine Hydrochloride 5.0 mg tablets was 1.37 %.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67434285","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
Method for Calculation of the Current Concentration of Alkali in the Electrolyte During the Water Electrolysis Process 电解过程中电解液中碱电流浓度的计算方法
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p27-33
A. Rusanov, V. Solovey, M. Zipunnikov, V. Semikin
{"title":"Method for Calculation of the Current Concentration of Alkali in the Electrolyte During the Water Electrolysis Process","authors":"A. Rusanov, V. Solovey, M. Zipunnikov, V. Semikin","doi":"10.17721/fujcv9i2p27-33","DOIUrl":"https://doi.org/10.17721/fujcv9i2p27-33","url":null,"abstract":"The article proposes a method for calculation of the current concentration of alkali in the electrolyte, taking into account the consumption and replenishment of feed water in the electrolyzer, which allows to estimate the specific electrical conductivity of the electrolyte during electrolysis process. This is important to increase the efficiency of the water electrolysis process. The calculated change of the current concentration of alkali in the electrolyte in high-pressure electrolyzers taking into account the volume of produced hydrogen is given. With the usage of the proposed method, it is established that the current concentrations of alkali in the electrolyte during the operation of the developed high-pressure electrolyzers are in the range of optimal concentrations, where the specific electrical conductivity of the electrolyte is close to maximum and changes according to alkali concentration change.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67433611","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
Physicochemical Quality of Water from Chuho Springs, Kisoro District, Uganda 乌干达基索罗地区Chuho泉水的物理化学质量
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p12-26
Gerald Nkurunziza, Timothy Omara, Caroline Kiwanuka Nakiguli, P. Mukasa, D. Byamugisha, E. Ntambi
{"title":"Physicochemical Quality of Water from Chuho Springs, Kisoro District, Uganda","authors":"Gerald Nkurunziza, Timothy Omara, Caroline Kiwanuka Nakiguli, P. Mukasa, D. Byamugisha, E. Ntambi","doi":"10.17721/fujcv9i2p12-26","DOIUrl":"https://doi.org/10.17721/fujcv9i2p12-26","url":null,"abstract":"In the current study, water from Chuho springs used as the main water source in Kisoro municipality, Uganda were assessed for their suitability as drinking water. The temperature, turbidity, conductivity, total dissolved solids, dissolved oxygen, biological oxygen demand, total hardness, total alkalinity, calcium, magnesium, phosphates, iron, copper, arsenic, chlorides and the fluoride content of the water samples were determined. Not all the parameters met World Health Organizations’ guidelines for drinking water. Temperature, dissolved oxygen and fluorides were outside the recommended limits of 15 ℃, 10-12 mg/L and 1.5 mg/L, respectively. Further studies should assess the microbiological and sanitary profile of the springs.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"54 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67433506","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
The Complex Method for Measurement Polycyclic Aromatic Hydrocarbons in Soil, Water, Plant Products 测定土壤、水、植物产品中多环芳烃的复合方法
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p1-11
N. Tereshchenko, O. Khyzhan, V. Maksin, Kateryna Nesterova
{"title":"The Complex Method for Measurement Polycyclic Aromatic Hydrocarbons in Soil, Water, Plant Products","authors":"N. Tereshchenko, O. Khyzhan, V. Maksin, Kateryna Nesterova","doi":"10.17721/fujcv9i2p1-11","DOIUrl":"https://doi.org/10.17721/fujcv9i2p1-11","url":null,"abstract":"The measurement of xenobiotics (polycyclic aromatic hydrocarbons (PAHs) group) in agricultural objects: soil, water, plant products was developed and tested by the high performance liquid chromatography method in this work. Our investigation was carried out by using laboratory samples taken from the research farm \"Snitynka\". Optimal modes of high-performance liquid chromatography method with a fluorescent detector (HPLC/FLD) were established for xenobiotics measurement: benzo(a)anthracene, benzo(a)pyrene, benzo(e)pyrene, benzo(b)fluorine, chrysene and their mixtures. Metrological characteristics of PAHs measuring were established: the limit of quantitative analysis (LOQ = 1.0 μg/kg), the limit of detection (LOD = 0.25 μg/kg), measuring range 1.0 - 10.0 μg/kg, the total measurement error (%) for each xenobiotics content average did not exceed 20%. The approbation of the methodology was performed in series of 50 model samples in the concentration range of each xenobiotics from 1.0±0.1 μg/kg to 10.0±0.1 μg/kg and in series of 50 natural samples. It is established that the developed method allows to unify laboratory control of PAHs and improves the process of monitoring analysis of xenobiotics.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67433400","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
Numerical Simulation of the Process of Combustion of a Stoichiometric Hydrogen-Oxygen Mixture in a Steam Generator 化学计量氢-氧混合物在蒸汽发生器内燃烧过程的数值模拟
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2021-01-01 DOI: 10.17721/fujcv9i2p34-51
A. Avramenko
{"title":"Numerical Simulation of the Process of Combustion of a Stoichiometric Hydrogen-Oxygen Mixture in a Steam Generator","authors":"A. Avramenko","doi":"10.17721/fujcv9i2p34-51","DOIUrl":"https://doi.org/10.17721/fujcv9i2p34-51","url":null,"abstract":"Numerical methods are used to study the process of combustion of a stoichiometric hydrogen-oxygen mixture. The mathematical models were validated using experimental data. The combustion process is modelled in the three-dimensional unsteady formulation. With account of the recommendations of other authors, the turbulent flows are described in the paper using the standard k-ε turbulence model. The Eddy Dissipation Model (EDM) is used to describe the process of combustion of the hydrogen-oxygen mixture. The description of the complex heat transfer between the gas, flame and walls in the paper accounts for radiant heat transfer by using the P1 model. The paper deals with combustion processes in a burner and a model steam generator. Numerical methods were used to evaluate the effect of inlet flow turbulisation, and the flow rate and the method of feeding extra water to the combustion chamber on the process of combustion of the stoichiometric hydrogen-oxygen mixture. The influence of the design and operating mode factors on the alteration of the flame-steam interface and on the flame extinguishing conditions were studied. The results obtained can be used in future in designing equipment that uses hydrogen as a fuel to increase nuclear power plant (NPP) manoeuvrability.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67434011","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
Development of Extraction Method of Polycyclic Aromatic Hydrocarbons from Sunflower Oil 向日葵油中多环芳烃提取方法的研究进展
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2020-12-22 DOI: 10.17721/fujcv8i2p7-16
N. Tereshchenko, O. Khyzhan, L. Kovshun, V. Maksin, Alexander Bobunov
{"title":"Development of Extraction Method of Polycyclic Aromatic Hydrocarbons from Sunflower Oil","authors":"N. Tereshchenko, O. Khyzhan, L. Kovshun, V. Maksin, Alexander Bobunov","doi":"10.17721/fujcv8i2p7-16","DOIUrl":"https://doi.org/10.17721/fujcv8i2p7-16","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs) adsorption extraction process from sunflower oil on activated carbon was studied. Specific adsorption values on activated charcoal-xenobiotic system for compounds of benzo(a)anthracene, benzo(a)pyrene, benzo(e)pyrene, chrysene, benzo(b)fluoranthene and their mixtures were investigated. Influence of phase contact time of system, ratio of components on degree of PAHs extraction under isothermal conditions (25 ± 0.01ºC) was studied. Degree of oil purification was controlled by method of high performance liquid chromatography with fluorescence detector (HPLC/FLD). Leaning on patterns found, optimal conditions for purification of raw sunflower oil from PAHs using activated charcoal and obtaining the matrix of sunflower oil proposed.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41583172","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 of 2-(1,2,4-oxadiazol-5-yl)-2,3-dihydro-4H-chromen-4-ones 2-(1,2,4-恶二唑-5-基)-2,3-二氢- 4h -铬-4-酮的合成
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2020-12-22 DOI: 10.17721/fujcv8i2p176-182
Andrii I. Kysil, A. Biitseva, O. Bugera, T. Yegorova, Z. Voitenko
{"title":"Synthesis of 2-(1,2,4-oxadiazol-5-yl)-2,3-dihydro-4H-chromen-4-ones","authors":"Andrii I. Kysil, A. Biitseva, O. Bugera, T. Yegorova, Z. Voitenko","doi":"10.17721/fujcv8i2p176-182","DOIUrl":"https://doi.org/10.17721/fujcv8i2p176-182","url":null,"abstract":"Simple and efficient synthesis of 2-(1,2,4-oxadiazol-5-yl)-2,3-dihydro-4H-chromen-4-ones is elaborated. The method relies on CDI-mediated cyclocondensation of substituted 4-oxochromane-2-carboxylic acids and amidoximes. The protocol allows the preparation of 2-oxadiazolylchromanones decorated with two pharmacophores (2,3-dihydro-4H-chromen-4-one and 1,2,4-oxadiazole) that are in high demand in drug discovery.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44914526","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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