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Transactions of Nonferrous Metals Society of China 2016年第11期26卷 2916-2924页

作者： S.QI N.M.POROTNIKOVA M.V.ANANYEV A.V.KUZMIN V.A.EREMIN a.a.pankratov N.G.MOLCHANOVA O.G.REZNITSKIKH A.S.FARLENKOV E.G.VOVKOTRUB Yu.P.ZAIKOV 北京化工大学材料科学与工程学院北京100029 Institute of High-Temperature Electrochemistry of UB RAS Ekaterinburg 620137Russia Ural Federal University named after the First President of Russia B.N.Yeltsin Ekaterinburg 620002Russia

Glasses of the SiO_2-Al_2O_3-BaO-MgO and SiO_2-Al_2O_3-ZrO_2-CaO-Na_2O systems were synthesized in the perspective to apply them as sealants in SOFC at operating temperatures of 700-900 °C. Thermal properties of the chosen glass compositions and their compatibility with the SOFC materials(YSZ-electrolyte and alloy-interconnector Crofer22 APU, 15Х25Т) were investigated by means of synchronic thermal analysis and high-temperature dilatometry. The elemental analysis was performed by atomic emission spectroscopy. The average values of the temperature coefficients of the linear extension are 10.0×10^(-6) °С^(-1) for glass 45%SiO_2-15%Al_2O_3-25%BaO-15%MgO and 9.5×10^(-6) °С^(-1) for glass 60%SiO_2-10%Al_2O_3-10%ZrO_2-5%CaO-15%Na_2O. The gluing microstructure in YSZ/glass/Crofer22 APU was studied by scanning electron microscopy. The crystallization process of silicate phases was revealed to occur in the SiO_2-Al_2O_3-BaO-MgO glass. The analysis of the crystallization products was performed by Raman spectroscopy and X-ray diffraction. Glassy ceramics was proved to possess better parameters in comparison with amorphous glass to be used as a sealant in electrochemical sensors and oxygen sensors. The SiO_2-Al_2O_3-ZrO_2-CaO-Na_2O low-temperature amorphous glass can be applied in SOFC.

关键词： glassy-ceramic sealants SOFC YSZ Crofer22APU magnesium silicate

Optimization of Pulse Laser Annealing to Increase Sharpness of Implanted-junction Rectifier in Semiconductor Heterostructure

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Nano-Micro Letters 2010年第4期2卷 256-267页

作者： E.L.pankratov Nizhny Novgorod State University of Architecture and Civil Engineering

It has been recently shown that inhomogeneity of a semiconductor heterostructure leads to increasing of sharpness of diffusion-junction and implanted-junction rectifiers,which are formed in the semiconductor *** has been also shown that together with increasing of the sharpness,homogeneity of impurity distribution in doped area *** both effect could be increased by formation of an inhomogeneous distribution of temperature(for example,by laser annealing).Some conditions on correlation between inhomogeneities of the semiconductor heterostructure and temperature distribution have been *** time has been optimized for pulse laser annealing.

关键词： Pulse laser Implanted-juction rectifier Heterostructure

On correction of model of stabilization of distribution of concentration of radiation defects in a multilayer structure with account experiment data

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Journal of Semiconductors 2018年第5期39卷 6-15页

作者： E.L.pankratov Nizhny Novgorod State University Nizhny Novgorod603950Russia

We introduce a model of redistribution of point radiation defects, their interaction between themselves and redistribution of their simplest complexes（divacancies and diinterstitials） in a multilayer structure. The model gives a possibility to describe qualitatively nonmonotonicity of distributions of concentrations of radiation defects on interfaces between layers of the multilayer structure. The nonmonotonicity was recently found *** take into account the nonmonotonicity we modify recently used in literature model for analysis of distribution of concentration of radiation defects. To analyze the model we used an approach of solution of boundary problems,which could be used without crosslinking of solutions on interfaces between layers of the considered multilayer structures.

关键词： radiation defects nonmonotonicity of distributions of concentrations complex

On increasing of integration rate of elements in a multi-level inverter

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International Journal of Intelligent Computing and Cybernetics 2017年第3期10卷 272-286页

作者： Evgeny L.pankratov Volga-Vyatka Branch Elena Alexeevna Bulaeva Mathematical Department Radiophysical FacultyNizhny Novgorod State UniversityNizhny NovgorodRussia Moscow Technical University of Communication and Informatics(MTUSI) Nizhny NovgorodRussia

Purpose–The purpose of this paper is to analyze the redistribution of dopant and radiation defects to determine conditions which correspond to decreasing of elements in the considered inverter and at the same time to increase their ***/methodology/approach–In this paper,the authors introduce an approach to increase integration rate of elements in a three-level *** approach is based on decrease in the dimension of elements of the inverter(diodes and bipolar transistors)due to manufacturing of these elements by diffusion or ion implantation in a heterostructure with specific configuration and optimization of annealing of dopant and radiation ***–The authors formulate recommendations to increase density of elements of the inverter with a decrease in their *** implications–Optimization of manufacturing of integrated circuits and their ***/value–The results of this paper are based on original analysis of transport of dopant with account transport and interaction of radiation defects.

关键词： Function approximation Mathematical optimization

Optimized Filling of a Given Cuboid with Spherical Powders for Additive Manufacturing

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Journal of the Operations Research Society of China 2021年第4期9卷 853-868页

作者： Zoya Duriagina Igor Lemishka Igor Litvinchev Jose Antonio Marmolejo Alexander pankratov Tatiana Romanova Georgy Yaskov Lviv Polytechnic National University Lviv 79013Ukraine Katolicki Uniwersytet Lubelski Jana Pawła II Al.Racławickie 1420950 LublinPoland Graduate Program in Systems Engineering Nuevo Leon State University(UANL)MonterreyCP 66455 San Nicolas de los GarzaNuevo LeonMexico Engineering Department Panamerican UniversityCP 03920 Mexico CityMexico Department of Mathematical Modeling and Optimal Design Institute for Mechanical Engineering Problemsthe National Academy of Sciences of UkraineKharkiv 61046Ukraine Department of Systems Engineering of Kharkiv National University of Radio Electronics Kharkiv 61166Ukraine

In additive manufacturing(also known as 3D printing),a layer-by-layer buildup process is used for manufacturing *** laser 3D printers can work with various materials including metal *** particular,mixing various-sized spherical powders of titanium alloys is considered most promising for the aerospace *** achieve desired mechanical properties of the final product,it is necessary to maintain a certain proportional ratio between different powder *** this paper,a modeling approach for filling up a rectangular 3D volume by unequal spheres in a layer-by-layer manner is proposed.A relative number of spheres of a given radius(relative frequency)are known and have to be fulfilled in the final packing.A fast heuristic has been developed to solve this special packing *** results are compared with experimental findings for titanium alloy spherical *** relative frequencies obtained by using the imposed algorithm are very close to those obtained by the *** provides an opportunity for using a cheap numerical modeling instead of expensive experimental study.

关键词： Sphere packing Heuristic algorithm Titanium alloy spherical powders 3D printing

Mechanism and kinetics of iron extraction from high silica boehmite−kaolinite bauxite by hydrochloric acid leaching

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Transactions of Nonferrous Metals Society of China 2021年第10期31卷 3128-3149页

作者： Dmitry VALEEV Denis pankratov Andrei SHOPPERT Artem SOKOLOV Alexandr KASIKOV Alexandra MIKHAILOVA Cristian SALAZAR-CONCHA Ilia RODIONOV Laboratory of Sorption Methods Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences119334 MoscowRussia Department of Chemistry Lomonosov Moscow State University119991 MoscowRussia Department of Non-ferrous Metals Metallurgy Ural Federal University620002 YekaterinburgRussia Tananaev Institute of Chemistry Kola Science Centre of the Russian Academy of Sciences184209 ApatityRussia Laboratory of Crystal Structure Studies A.A.Baikov Institute of Metallurgy and Materials ScienceRussian Academy of Sciences119334 MoscowRussia Universidad Austral de Chile ValdiviaChile Graphite Innovation and Technologies Dartmouth NSCanada

The chemical and mineral compositions of bauxite recovered from the Severoonezhsk Bauxite Mine(Arkhangelsk region,Russia)were studied by XRD,ICP-OES,TG/DSC,SEM,TEM,and Mössbauer *** iron-containing minerals of the bauxites were found to comprise alumogoethite(α-Fe_(1−x)Al_(x)OOH),alumohematite(α-(Fe_(1−x)Al_(x))_(2)O_(3)),alumoakaganeite(β-Fe_(1−x)Al_(x)O(OH,Cl)),and chromite(FeCr_(2)O_(4)).The efficiency of Fe extraction from the bauxite by HCl leaching was 82.5%at 100℃,HCl concentration of 10%,solid/liquid ratio of 1:10,and the process duration of 60 min,with aluminum loss from the bauxites below 4.5%of the total Al contents in the *** of the kinetics of the iron leaching process proved diffusion to be the limiting stage of the process at 90−100℃.Bauxite residue after leaching presented traces of α-Fe_(1−x)Al_(x)OOH and β-Fe_(1−x)Al_(x)O(OH,Cl),and most of the iron content was in the FeCr_(2)O_(4).In bauxite residue after HCl leaching,in addition to iron oxide,the contents of chromium and calcium oxides significantly *** iron chloride liquor after leaching contained the rare earth elements(REE)of 6.8 mg/L Sc,4.1 mg/L Ce and 2.3 mg/L Ga.

关键词： bauxite acid leaching iron extraction kinetics Mössbauer spectroscopy

First Estimations of Plant Acridone Alkaloid Implemented in Mushroom Mycelium Growth

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Journal of Agricultural Science and Technology(B) 2013年第12期3卷 873-879页

作者： Olga Tsivileva Inna Uchaeva Alexei pankratov Tatyana Kudryavtseva Yurii Markovich Valentina Laboratory of Microbiology Institute of Biochemistry and Physiology of Plants and Microorganisms RAS Saratov 410049 Russia Faculty of Ecology and Service Saratov State Technical University Saratov 410054 Russia Institute of Chemistry N.G. Chernyshevskii Saratov State University Saratov 410012 Russia Scientific-Research Laboratory of Organic Synthesis Kursk State University Kursk 305000 Russia

Acridone derivatives are widespread in nature and known to be capable of having a variety of biological activities, but there is not any information on the acridone series compounds in relation to higher fungi, including edible mushrooms available in literature at all. Research into the character of the mode of action of these substances on various living systems is necessary to elucidate the possible unfavorable biological consequences and improve measures on their ecological safety. In this work, the effect of acridone-N-acetic acid on mushroom mycelial growth was tested and the culture of basidiomycete Lentinula edocles （shiitake） has been used. The influence of acridone additive upon the fungal mycelium growth on liquid （submerged） and agar media was examined within the wide concentration range of acridone carboxy-derivative. The results obtained testify to the relative ecological safety of these substances for mushroom organism, and to the mycelial growth promoting capability of acridone-N-acetic acid at favorable concentrations, both under the solid-phase and liquid-phase culture conditions. In fact, the very first step toward the investigation into the systems ＂macromycete-acridone series compound＂ has been made.

关键词： Mushrooms Lentinula edodes acridone-N-acetic acid solid-phase fungal culture submerged fungal culture.

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俄国非选择性热辐射探测器(上)

红外 1995年第5期16卷 16-23页

作者： Nikolai A.pankratov 李玲俄罗斯瓦维洛夫州光学研究所

本文对前苏联在近几年中有关非选择性热辐射探测器的工作作一概述、公开报道和讨论。在不同的红外光谱区中,前苏联采用各种类型的热探测器。每隔两年举行一次热探测器的学术会议,会上发表的论文涉及下列主题:热释电探测器、光声探测器... 详细信息

本文对前苏联在近几年中有关非选择性热辐射探测器的工作作一概述、公开报道和讨论。在不同的红外光谱区中,前苏联采用各种类型的热探测器。每隔两年举行一次热探测器的学术会议,会上发表的论文涉及下列主题:热释电探测器、光声探测器、辐射计量装置,探测器所采用的光学材料、红外光谱区的计量学等。

关键词：俄国非选择性热辐射探测器综述

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俄国非选择性热辐射探测器(下)

红外 1995年第6期 28-31页

作者： Nikolai A.pankratov,李玲俄罗斯瓦维洛夫州光学研究所

5.新光声探测器温捷洛夫(***)教授是第一个提出光声辐射探测器的人。他引入了辐射调制、采用电动麦克风(微音器),制备了第一个具有非选择性和选择性器件的完整的探测器,这种器件是红外气体分析仪的主要部件。在他的实验室中,研制了一... 详细信息

5.新光声探测器温捷洛夫(***)教授是第一个提出光声辐射探测器的人。他引入了辐射调制、采用电动麦克风(微音器),制备了第一个具有非选择性和选择性器件的完整的探测器,这种器件是红外气体分析仪的主要部件。在他的实验室中,研制了一些非选择性的光声探测器,最好的探测器是带有光学麦克风的探测器,如高莱探测器。这种探测器是由***

关键词：热电探测器非选择性单元的辐射探测器粒子探测器热电材料各向异性材料麦克风传声器

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橡胶用石油芳香增塑剂油的改造

增塑剂 2004年第1期 19-22页

作者： V.A．pankratov 陈章强

增塑剂是轮胎用混合橡胶和近代必需橡胶制品的重要组分之一。目前，俄罗斯橡胶加工工业取得来自石油(含芳烃为主)的增塑剂非常有限。然而，石油加工工业有占有大量原料和工艺资源，如果加以开发，就有可能得到需要的增塑剂。就此而论，... 详细信息

增塑剂是轮胎用混合橡胶和近代必需橡胶制品的重要组分之一。目前，俄罗斯橡胶加工工业取得来自石油(含芳烃为主)的增塑剂非常有限。然而，石油加工工业有占有大量原料和工艺资源，如果加以开发，就有可能得到需要的增塑剂。就此而论，为了满足橡胶工业日益发展的需要，开发并提出新的石油增塑剂是一个极为迫切需要解决的课题。

关键词：增塑剂轮胎芳烃橡胶 KM-2油改造