Nanotechnologies in Russia最新文献

Conductivity of Nanoscale Conductive Structures 纳米级导电结构的导电性

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600385

V. V. Starostenko, E. V. Grigoriev, V. M. Vasilchenko, E. P. Taran, S. A. Zuev, A. N. Kofanov, S. A. Maksyuta

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Polyglycolide-Lactide Matrices for Pancreatic Surgery 胰腺手术用聚乙二醇-丙交酯基质

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600701

I. M. Zorin, B. V. Sigua, A. A. Lezov, V. P. Tolstoy, S. Yu. Rakita

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Plasma-Liquid Synthesis and Photothermal Properties of MXene/Graphene Oxide Nanocomposites MXene/氧化石墨烯纳米复合材料的等离子体-液体合成及其光热性能

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600725

N. A. Sirotkin, A. I. Larionov, A. V. Khlyustova

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Influence of the Type of Nanoscale Carbon Filler on Changes in the Characteristics of Polymer Nanocomposites after Their Preliminary Holding in the Melt State 纳米碳填料类型对聚合物纳米复合材料熔体初保温后性能变化的影响

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600452

O. V. Lebedev, T. S. Kurkin, M. S. Piskarev, A. Yu. Marchenkov, E. K. Golubev, V. V. Nepomnyashchikh, A. N. Ozerin

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Development of Resorbible Composites Based on Chitosan Fibers for Bone Grafting 壳聚糖纤维再吸收复合材料的研究进展

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600737

N. A. Tagandurdyeva, G. V. Vaganov, I. P. Dobrovol’skaya, E. N. Dresvyanina, E. N. Popova, V. Yu. Elokhovskiy, V. E. Yudin, T. Wang

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Study of the Temperature Dependences of the Thermal Expansion Coefficients of Thermoelectric Materials Based on SiGe 基于SiGe的热电材料热膨胀系数的温度依赖性研究

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600282

Yu. I. Shtern, M. S. Rogachev, M. Yu. Shtern, A. A. Sherchenkov, N. Yu. Tabachkova, B. R. Mustafoev

{"title":"Study of the Temperature Dependences of the Thermal Expansion Coefficients of Thermoelectric Materials Based on SiGe","authors":"Yu. I. Shtern, M. S. Rogachev, M. Yu. Shtern, A. A. Sherchenkov, N. Yu. Tabachkova, B. R. Mustafoev","doi":"10.1134/S2635167625600282","DOIUrl":"10.1134/S2635167625600282","url":null,"abstract":"The work presents studies of the temperature dependences of the coefficients of linear thermal expansion (CLTE) of effective thermoelectric materials Si0.8Ge0.2 (1.8 wt % P) and Si0.8Ge0.2 (0.8 wt % B), which are synthesized by induction melting, and nanostructured thermoelectric materials obtained by spark plasma sintering. The density of the nanostructured thermoelectric materials (2.94 g/cm3) is 98% of the density of the synthesized thermoelectric materials (2.99 g/cm3). The synthesized and nanostructured thermoelectric materials have similar Vickers microhardness values of ~1100 HV. The CLTE value of the nanostructured thermoelectric materials is 2–3% higher than that of the synthesized thermoelectric materials. The temperature dependences of the CLTE are similar in nature and are within the range of 3.84 × 10–6 up to 4.71 × 10–6 K–1. For n- and p-type SiGe, the values of the CLTE are almost identical.","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"20 3","pages":"313 - 318"},"PeriodicalIF":0.8,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897023","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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Modeling of the Design of a Piezoelectric Nanogenerator Based on N-Doped Carbon Nanotubes 基于n掺杂碳纳米管的压电纳米发电机设计建模

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600610

D. N. Khomlenko, M. R. Polyvianova, O. I. Il’in, M. V. Il’ina

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On the Mechanism of the Antiseptic Therapeutic Action of Silver Ions 银离子防腐治疗作用机理研究

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600269

A. A. Antsiferova, P. K. Kashkarov

{"title":"On the Mechanism of the Antiseptic Therapeutic Action of Silver Ions","authors":"A. A. Antsiferova, P. K. Kashkarov","doi":"10.1134/S2635167625600269","DOIUrl":"10.1134/S2635167625600269","url":null,"abstract":"The concepts of the mechanisms of the antiseptic action of silver preparations, which are widely known in the world scientific community, can be boiled down to the suppression and destruction of harmful bacteria, viruses, and fungi. For example, this is the death of pathogens (bacteria, fungi) due to oxidative stress, which is caused by the increased generation of reactive oxygen species when silver ions affect the cell respiration pathway. However, this mechanism could equally lead to the death of beneficial bacteria and healthy cells in the body, which contradicts the centuries-old history of using silver compounds for medical purposes. The review puts forward the idea of a fundamentally different mechanism of the therapeutic antiseptic action of silver ions: the induction of stress, which, in turn, has a stimulating effect on the body, activating its own resources (similar to transformational psychological running, cold exposure, and sauna use). The occurrence of stress during exposure to silver ions is explained by the fact that silver is not an essential (vital) element for mammals, is not constantly present in the body, and thus the body is forced to adapt to it as to the novel perturbance during such exposure. In order to ensure a therapeutic effect, it is necessary that the duration and intensity of the stressful impact not be too great to avoid chronic stress and distress, which, as is known, lead to suppression of the body’s vital resources.","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"20 3","pages":"255 - 265"},"PeriodicalIF":0.8,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S2635167625600269.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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On the Pharmaceutical Development of a Liposomal Dosage Form of a Tyrosine Kinase Inhibitor 酪氨酸激酶抑制剂脂质体剂型的研制

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S263516762560066X

Z. S. Shprakh, A. R. Kovaleva, E. V. Sanarova, D. A. Kozin, L. L. Nikolaeva

{"title":"On the Pharmaceutical Development of a Liposomal Dosage Form of a Tyrosine Kinase Inhibitor","authors":"Z. S. Shprakh, A. R. Kovaleva, E. V. Sanarova, D. A. Kozin, L. L. Nikolaeva","doi":"10.1134/S263516762560066X","DOIUrl":"10.1134/S263516762560066X","url":null,"abstract":"Pazopanib is a multitargeted tyrosine kinase inhibitor that suppresses angiogenesis and proliferation of tumor cells. To increase its bioavailability, a model of a liposomal dosage form of pazopanib is developed and its main pharmaceutical and technological characteristics are determined. It is found that a composition including the active substance, egg phosphatidylcholine, cholesterol, and poly(ethylene glycol) lipid in a mass ratio of 1 : 75 : 7.5 : 0.75 possesses the best properties (size, polydispersity index, and surface charge). To determine the pazopanib concentration in model mixtures, ultraviolet (UV) spectrophotometry is used, which demonstrates the specificity of the method and its linearity (the ability to obtain results within a specified range that are directly proportional to the concentration of the analyte in the sample). The liposomal dispersion is stabilized by lyophilization, and a 10%-aqueous sucrose solution is selected as a cryoprotectant. Pazopanib in the final product is determined by high-performance liquid chromatography. The stability of the lyophilized liposomal dosage form for six months at a storage temperature of no higher than –18°C is shown.","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"20 3","pages":"366 - 372"},"PeriodicalIF":0.8,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897039","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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Thermoelectric Properties of CaMnO3 Doped with Gadolinium Ions 钆离子掺杂CaMnO3的热电性能

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Nanotechnologies in Russia Pub Date : 2025-08-25 DOI: 10.1134/S2635167625600658

E. V. Chernyshova, S. N. Yudin, S. S. Yurlov, K. V. Kuskov, D. O. Moscovskikh, V. V. Khovaylo

{"title":"Thermoelectric Properties of CaMnO3 Doped with Gadolinium Ions","authors":"E. V. Chernyshova, S. N. Yudin, S. S. Yurlov, K. V. Kuskov, D. O. Moscovskikh, V. V. Khovaylo","doi":"10.1134/S2635167625600658","DOIUrl":"10.1134/S2635167625600658","url":null,"abstract":"Single-phase hollow spheres based on calcium manganite CaMnO3 and gadolinium-doped Ca0.96Gd0.04MnO3 with the perovskite structure Pnma are synthesized via the method of spray solution combustion synthesis. Spark plasma sintering leads to the production of a secondary phase of marokite CaMn2O4 with the Pbcm structure, while doping promotes to decrease the marokite content. A change in the parameters of the perovskite crystal lattice is established, which indirectly indicates the substitution of Ca2+ with Gd3+ and the formation of oxygen vacancies: both factors lead to a change in the Mn3+/Mn4+ ratio in the structure and, as a consequence, an increase in the electrical conductivity in the doped material due to a decrease in the activation energy of polaron hopping between localized states of Mn3+ and Mn4+. The resulting morphology enhances phonon scattering processes, which leads to a decrease in the thermal conductivity. The combination of the above factors leads to a significant increase in the thermoelectric efficiency: for Ca0.96Gd0.04MnO3 the value zT reaches 0.26 at T = 975 K, which is 117% higher than that of the undoped sample (zT = 0.12). This confirms the promise of the chosen approaches for creating highly efficient thermoelectric ceramics.","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"20 3","pages":"304 - 312"},"PeriodicalIF":0.8,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897024","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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