Colloid Journal最新文献_第10页

Effect of Magnetite Content and Specificity of Nickel(II) Ions on Electrokinetic Properties of Composites Based on Porous Silica Particles 磁铁矿含量和镍（II）离子的特异性对多孔二氧化硅复合材料电动性能的影响

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600446

A. V. Volkova, E. S. Lopatina, E. V. Solovyeva, L. E. Ermakova

{"title":"Effect of Magnetite Content and Specificity of Nickel(II) Ions on Electrokinetic Properties of Composites Based on Porous Silica Particles","authors":"A. V. Volkova, E. S. Lopatina, E. V. Solovyeva, L. E. Ermakova","doi":"10.1134/S1061933X23600446","DOIUrl":"10.1134/S1061933X23600446","url":null,"abstract":"<p>Powders of magnetite and its composites have been obtained on the basis of macroporous high-silica glass particles containing different amounts of Fe<sub>3</sub>O<sub>4</sub>. XRD, XPS, and Raman spectroscopy have been employed to confirm the formation of a magnetite phase in all iron-containing samples. The surface morphology and elemental composition of porous composite particles have been studied by SEM and EDX methods. It has been found that the external surface of porous silica particles is modified to different extents. It has been shown that the position of the isoelectric point (IEP) and the values of the zeta-potentials for the composites coincide in indifferent electrolyte solutions. Two isoelectric points are observed in the pH dependences of the zeta-potential for the composite particles in nickel chloride solutions. In dilute solutions containing specifically adsorbed nickel ions and at pH below pH<sub>IEP-2</sub>, the electrokinetic properties of the composite particles are primarily affected by magnetite phase content in a composite powder and, at rather high concentrations of Ni<sup>2+</sup> ions, by their specificity with respect to oxide surfaces.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On the Effect of Viscosity Relaxation on Electromagnetic Radiation Intensity of an Oscillating Charged Droplet 粘性弛豫对振荡带电液滴电磁辐射强度的影响

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23700199

A. I. Grigor’ev, N. Yu. Kolbneva, S. O. Shiryaeva

引用次数: 0

In Situ Encapsulation of Nickel Nanoparticles in Polysaccharide Shells during Their Fabrication by Electrical Explosion of Wire 金属丝电爆炸法制备纳米镍在多糖壳中的原位包封

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600410

A. P. Safronov, I. V. Beketov, A. V. Bagazeev, A. I. Medvedev, A. M. Murzakaev, T. V. Terziyan, A. Yu. Zubarev

{"title":"In Situ Encapsulation of Nickel Nanoparticles in Polysaccharide Shells during Their Fabrication by Electrical Explosion of Wire","authors":"A. P. Safronov, I. V. Beketov, A. V. Bagazeev, A. I. Medvedev, A. M. Murzakaev, T. V. Terziyan, A. Yu. Zubarev","doi":"10.1134/S1061933X23600410","DOIUrl":"10.1134/S1061933X23600410","url":null,"abstract":"<div><div><h3>\u0000 <b>Abstract</b>—</h3><p>Nickel nanoparticles are obtained by electrical explosion of wire under the action of a high-voltage discharge followed by condensation in an inert gas medium. When butane is added to the gas medium, a carbon shell is deposited onto the condensing nickel particles. Immediately after the synthesis, liquid-phase modification of nanoparticles is carried out with aqueous solutions of polysaccharides agarose and gellan. As a result, a polymer shell is formed on particles of Ni and nickel particles coated with a carbon shell (Ni@C). The dispersity, crystalline structure, and magnetic properties of Ni and Ni@C nanoparticles are characterized by transmission microscopy, X-ray diffraction analysis, and vibration magnetometry. The total carbon content on the surface of the nanoparticles is determined by thermal analysis with simultaneous mass spectrometry. It is shown that, under the studied conditions, polysaccharides are deposited onto the nanoparticles in amounts up to 2 wt % to form a shell with a thickness of about 4 nm. When agarose is used as a modifier, the content of the polysaccharide increases with the concentration of the modifying solution. When gellan is used as a modifier, a more complex concentration dependence is observed: an initial increase is followed by a decrease in the amount of deposited polysaccharide. The results are discussed from the viewpoint of the influence of the molecular weight of a polymer on the adsorption process.</p><figure><div><div><div><picture><img></picture></div></div></div></figure></div></div>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lecithin Microemulsions as Drug Carriers 作为药物载体的卵磷脂微乳液

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-10-01 DOI: 10.1134/s1061933x23600689

N. M. Murashova

引用次数: 0

Etoposide-Loaded Colloidal Delivery Systems Based on Biodegradable Polymeric Carriers 基于生物可降解聚合物载体的依托泊苷胶体给药系统

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-10-01 DOI: 10.1134/s1061933x23600744

M. Merkulova, N. S. Osipova, A. V. Kalistratova, Yu. V. Ermolenko, S. E. Gel’perina

引用次数: 0

Colloidal Objects in Biomedicine: Modern Trends and Prospects 生物医学中的胶体物：现代趋势与前景

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-10-01 DOI: 10.1134/s1061933x2360077x

E. V. Kuznetsova, N. M. Kuznetsov

引用次数: 0

On the possibilities of mining waste utilization in the Murmansk Region 摩尔曼斯克地区采矿废物利用的可能性

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-79-85

S. Ivanov

引用次数: 0

Economics, organization and management of enterprises, industries, and complexes 经济学，企业、工业和综合体的组织和管理

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-86-97

I. Mal'ceva

{"title":"Economics, organization and management of enterprises, industries, and complexes","authors":"I. Mal'ceva","doi":"10.19110/1994-5655-2023-3-86-97","DOIUrl":"https://doi.org/10.19110/1994-5655-2023-3-86-97","url":null,"abstract":"The article studies the concepts of sustainable agriculture and the factors of internal and external systems influencing its formation. Having surveyed the principles of sustainable agriculture, the author clarified that the agricultural sustainability largely depends on the efficient management of natural systems and resources. The work presents a conceptual model for sustainable agriculture and rural areas defined as a socio-economic-natural complex system that includes three subsystems as agrarian-economic, rural-ecologic, and rural-social subsystems. The purpose of the integrated system is to coordinate the interaction and interconnection between the rural subsystems and their components to achieve harmony between agricultural production, the rural environment, and the well-being of peasants and rural residents. The modern methods of sustainable agriculture, and therefore sustainable resource management, mean the resource-saving, organic, biodynamic, climatically optimized, regenerative agriculture, relate to sustainable intensification and resource-saving agriculture. To form the agricultural sustainability in the northern region, the author proposes new approaches to its development such as the integrated farming system, agroforestry, site specific crop farming, integrated nutrient management and integrated pest management.","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86250746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

About the spatial development (judgment about the subject and methodology uncertainty) 关于空间发展(关于主体的判断和方法论的不确定性)

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-103-111

V. Lazhencev

引用次数: 0

Features of migration processes of the Komi Republic in 1990-2020 1990-2020年科米共和国移民过程特征

IF 1.1 4区化学

Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-35-43

N. Zhuravlev

{"title":"Features of migration processes of the Komi Republic in 1990-2020","authors":"N. Zhuravlev","doi":"10.19110/1994-5655-2023-3-35-43","DOIUrl":"https://doi.org/10.19110/1994-5655-2023-3-35-43","url":null,"abstract":"The northern regions of our country are characterized by a significant migration decline. The Komi Republic stands out among them with the highest values of indicators of migration outflow of the population. Operating with statistical data, the article analyzes the migration processes of the Komi Republic for the period from 1990 to 2020. The purpose of the study is to identify the features of migration in the region, depending on its direction and period. The article presents the results of the analysis of migration turnover, the specifics of migration flows of internal and interregional migration, as well as the dynamics of migration exchange between urban and rural territories. According to the re¬sults, it was found that internal migration flows are directed to the capital of the region, acting as a socio-economic and educational center. The largest outflow of population is char¬acteristic of cities whose economic specialization has now lost relevance. Migration within the region is characterized by an influx of population from rural areas to the city, and the share of the village in interregional migration is significantly inferior to the city. Despite the continuing migration decline of the population, the intensity of migration is decreasing by 2020, due to a decrease in the number of both departures and arrivals, the difference between migration from the city and from the countryside is decreasing.","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73604459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0