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基于ZSM-5的微孔-中孔催化剂上(-)-异蒲勒醇与苯甲醛Prins环化反应合成药物（英文）

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Chinese Journal of Catalysis 2019年第11期40卷 1713-1720页

作者： Ekaterina Kholkina Paivi Maki-Arvela Chloe Lozachmeuer Roman Barakov Nataliya Shcherban dmitry yu. murzin 博阿卡德米大学科学与工程系约翰·盖多林过程化学中心芬兰土尔库20500 乌克兰国家科学院L.V. Pisarzhevsky物理化学研究所乌克兰基辅03028

将数个ZSM-5基微孔-中孔催化剂用于(-)-异蒲勒醇与用作反应物和溶剂的苯甲醛进行Prins环化反应,合成杂环含氧2H-色烯衍生物,其包含四氢吡喃结构并表现出生物活性.采用N2吸附,氨-程序升温还原,吡啶和2,6-二-叔丁基吡啶吸附-脱附的红外光... 详细信息

将数个ZSM-5基微孔-中孔催化剂用于(-)-异蒲勒醇与用作反应物和溶剂的苯甲醛进行Prins环化反应,合成杂环含氧2H-色烯衍生物,其包含四氢吡喃结构并表现出生物活性.采用N2吸附,氨-程序升温还原,吡啶和2,6-二-叔丁基吡啶吸附-脱附的红外光谱表征了所考察的催化剂.当在含适量强酸位和12倍所需产物尺寸的中孔的催化剂上,于70℃下进行Prins反应,(-)-异蒲勒醇完全转化时所需产物产率最高达67%.

关键词：微孔-中孔材料 Prins成环反应四氢吡喃

Transformation of bio-derived acids into fuel-like alkanes via ketonic decarboxylation and hydrodeoxygenation： Design of multifunctional catalyst, kinetic and mechanistic aspects

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Journal of Energy Chemistry 2016年第2期25卷 206-222页

作者： Irina L.Simakova dmitry yu.murzin Boreskov Institute of Catalysis Novosibirsk 630090 Russian Federation Novosibirsk State University Novosibirsk 630090 Russian Federation Abo Akademi University Turku FI-20500 Finland

The combination of a low cost source of Biofine＇s levulinic acid with available way of valeric acid synthesis opens up new opportunities for valeric acid as a promising bio-derived source for synthesis of valuable compounds for transportation sector. The present review illustrates the development of different approaches to one–pot synthesis of fuel-like alkanes from lignocellulose derived carboxylic acids where particular focus is given to valeric acid consecutive decarboxylative coupling（ketonization） and ketone hydrodeoxygenation in a single reactor over one catalyst bed. The key factors that influence the catalytic performance on both ketonization and hydrodeoxygenation steps as well as their cross-influence will be clarified to provide insights for the design of more efficient catalysts for the one-pot transformation. Valeric acid is considered as a potential acid source from viewpoint of cost effectiveness and feasibility of such transformation with reasonable alkane yield. The both reaction mechanisms and kinetics will also be discussed to understand deeply how the selective C–C coupling and following C=O hydrogenation can be achieved.

关键词： Carboxylic acids Ketonization Hydrodeoxygenation Alkane Biofuel

A room-temperature magnetic semiconductor from a Co-Fe-Nb-B metallic glass

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Science China(Physics,Mechanics & Astronomy) 2023年第4期66卷 94-99页

作者： yu.Zhang Jiao dmitry VLouzguine-Luzgin Ke-Fu Yao Zheng-Jun Zhang Na Chen Laboratory for Advanced Materials Processing Technology(MOE) State Key Laboratory of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials(MOE) Schoolof Materials Science and EngineeringTsinghua UniversityBeijing 100084China Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan Mathematics for Advanced Materials-OIL National Institute of Advanced Industrial Science and Technology(AIST)Sendai 980-8577Japan

Magnetic semiconductors with Curie temperatures higher than room temperature show potential for developing spintronic devices with combined data processing and storage functions for next-generation computing *** this study,we present an n-type Co_(19.8)Fe_(8.6)Nb_(4.3)B_(6.0)O_(61.3) magnetic semiconductor with a high Curie temperature of~559 *** magnetic semiconductor has a room-temperature resistivity of~2.10×10^(4)Ωcm and a saturation magnetization of~76 emu/cm^(3).The n-type Co_(19.8)Fe_(8.6)Nb_(4.3)B_(6.0)O_(61.3)magnetic semiconductor was deposited on p-type silicon to form a heterojunction,exhibiting a rectifying *** results provide the design principles for discovering high Curie temperature magnetic semiconductors with determined conduction types,which would play an essential role in realizing nonvolatile spin-based transistors that break free from the confines of currently established Si-based information technology.

关键词： magnetic semiconductor ferromagnetic metallic glass high Curie temperature

Single‑Photon Sources Based on Novel Color Centers in Silicon Carbide P–I–N Diodes: Combining Theory and Experiment

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Nano-Micro Letters 2021年第5期13卷 192-203页

作者： Igor A.Khramtsov dmitry yu.Fedyanin Laboratory of Nanooptics and Plasmonics Center for Photonics and 2D MaterialsMoscow Institute of Physics and Technology141700DolgoprudnyRussian Federation

Point defects in the crystal lattice of SiC,known as color centers,have recently emerged as one of the most promising single-photon emitters for non-classical light ***,the search for the best color center that satisfies all the requirements of practical applications has only just *** color centers in SiC have been recently discovered but not yet ***,it is extremely challenging to understand their optoelectronic properties and evaluate their potential for use in practical single-photon ***,we present a theoretical approach that explains the experiments on single-photon electroluminescence(SPEL)of novel color centers in SiC p-i-n diodes and gives the possibility to engineer highly efficient single-photon emitting diodes based on ***,we develop a novel method of determining the electron and hole capture cross sections by the color center from experimental measurements of the SPEL rate and second-order *** other methods,the developed approach uses the experimental results at the single defect level that can be easily obtained as soon as a single-color center is identified in the i-type region of the SiC p-i-n diode.

关键词： Color centers Electron capture cross section Single-photon emitting diodes Single-photon electroluminescence Charge state control

Substituted diamides of dipicolinic acid as extractants and ionophores for rare earth metals

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Journal of Rare Earths 2023年第8期41卷 1234-1241,I0005页

作者： Yingchao Ren Valery A.Polukeev Ekaterina V.Kenf Liudmila I.Tkachenko Mikhail yu.Alyapyshev Vasily A.Babain Andrey V.Nechaev Andrey V.Legin dmitry O.Kirsanov Institute of Chemistry Saint-Petersburg UniversityPeterhofUniversitetsky Prospect 26198504Saint-PetersburgRussia JSVC Vekton Ul.2-oy Luch 9192019Saint-PetersburgRussia Khlopin Radium Institute 194021282nd Murinsky avRussia ThreeArc Mining LLC Pr.Narodnogo Opolchenia 10198216Saint-PetersburgRussia Rusredmet Vosstanovleniya str.15bl.3198320St.PeterburgKrasnoe seloRussia

The variety of newly synthesized diamides of dipicolinic acid(DPA)bearing methyl-and oxymethyl substituents in various positions of phenyl ring was investigated as potential ligands for liquid-liquid extraction of rare earth metal ions and as membrane active compounds in plasticized polymeric membranes of potentiometric *** is found that scandium is extracted with 2,6-pyridinedicarboxylic acid diamides similarly to heavy lanthanides,while yttrium is extracted together with light group *** shows high selectivity for the separation of cadmium/zinc,lead/nickel or copper/nickel *** four out of six studied ligands demonstrate significant potentiometric sensitivity towards scandium,yttrium and lanthanides in 10^(-7)-10^(-3)mol/L concentration range in nitric acid *** trends in sensitivity values vary depending on a ligand structure and the highest values are observed for Sc^(3+)and heavy *** to the evaluated selectivity Sm^(3+)is the most preferred ion,while La^(3+)is the most *** differences in sensor behavior in rare earth metal solutions assume that such devices can be applied in sensor arrays for potentiometric analysis of lanthanide mixtures.

关键词： Dipicolini cacid diamides Scandium Yttrium Lanthanides Extraction Potentiometric sensors

Diagnostic value ultrasound signs of stones less than or equal to 10 mm and clinicoradiological variants of ureteric colic

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Asian Journal of Urology 2023年第1期10卷 39-49页

作者： Denis V.Krakhotkin Volodymyr A.Chernylovskyi Kemal Sarica Arman Tsaturyan Evangelos Liatsikos Jurijus Makevicius Nikolay yu.Iglovikov dmitry N.Pikhovkin Central District Hospital Outpatient ClinicSadovaya Lane 23KamenolomniRostov RegionRussia Private Urological Practice DniproUkraine Department of Urology Biruni University HospitalInstanbulTurkey Department of Urology University Hospital of PatrasPatrasGreece Department of Urology Medical University of ViennaViennaAustria Institute for Urology and Reproductive Health Sechenov UniversityMoscowRussia Institute of Clinical Medicine Faculty of MedicineVilnius UniversityVilniusLithuania Department and Clinic of Urology S.M.Kirov Military Medical Academy of the Ministry of Defense of the Russian FederationSt.PetersburgRussia Central District Hospital Department of SurgeryLenina Avenue 28AksayRostov RegionRussia

Objective:To determine the diagnostic value of ultrasound signs of urinary stones less than or equal to 10 mm and to determine clinico-radiological variants of ureteric ***:A total of 455 ultrasound investigations were performed in patients referring to emergency department with urolithiasis and symptoms suspected of ureteric colic between January 2021 and May *** addition to microscopic evaluation of urine sediment to detect different crystals and non-contrast spiral computed tomography to detect stones,B-mode and color Doppler sonography was performed to assess the presence of acoustic shadow(AS)and twinkle artifacts(TA)as possible signs of stone(s)in ***:While the sensitivity and specificity of AS and TA were higher than 90%in patients with stones greater than 5 mm;positive prognostic values of these parameters were found to be extremely low for stones with sizes of 1-3 mm with specificity and sensitivity values not exceeding 53%.The sensitivity and specificity of AS and TA in the upper and lower ureters were higher for stones greater than or equal to 5 than for compared to those less than 5 *** the same time,the diagnostic values of TA and AS for middle ureter stones were very *** most prevalent clinico-radiological variants of ureteric colic were types I,III,and V being observed in 39%,28% and 21% cases,***:Our results demonstrate that TA and AS parameters seem to have a very low sensitivity and specificity in the diagnosis of urinary stones less than 5 *** diagnostic value of TA and AS increase significantly in stones greater than or equal to 5 ***,clinicians need to be very careful for overestimating the diagnostic values of TA and AS for stones less than 5 mm and non-contrast spiral computed tomography must be the method of choice for patients presenting to emergency department with ureteric colic.

关键词： Ureteric colic Urolithiasis Ultrasound Twinkle artifact Non-contrast computed tomography

Crimean-Congo hemorrhagic fever virus in Central,Eastern,and South-eastern Asia

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Virologica Sinica 2023年第2期38卷 171-183页

作者： Mohammad Fereidouni dmitry AApanaskevich David B.Pecor Natalia yu.Pshenichnaya Gulzhan NAbuova Farida H.Tishkova Yekaterina Bumburidi 曾宪坤 Jens H.Kuhn Maryam Keshtkar-Jahromi Jahrom University of Medical Sciences(دانشگاهعلومپزشكيخدماتبهداشتیدرمانیجهرم) JahromFars Province74148-46199Iran U.S.National Tick Collection The James H.Oliver Jr.Institute for Coastal Plain ScienceGeorgia Southern UniversityStatesboroGA 30458USA Zoological Institute of Russian Academy of Sciences(ЗоологическийинститутРоссийскойакадеМиинаук) 199034St.PetersburgRussia Walter Reed Biosystematics Unit Department of EntomologySmithsonian InstitutionSuitlandMD 20746-2863USA One Health Branch Walter Reed Army Institute of ResearchSilver SpringMD 20910USA Central Research Institute of Epidemiology(Центральныйнаучно-исследовательскийинститутэпидеМиологии) 111123MoscowRussia South Kazakhstan Medical Academy(ОңтүстікҚазақстанМедицинаакадеМиясы) Shymkent160016Kazakhstan Tajik Science and Research Institute of Preventive Medicine(ИнститутиилМй-тадкикотиитиббипрофилактикииТоцикистон) 734025 DushanbeTajikistan Central Asian Office Centers for Disease Control and PreventionAlmaty050010Kazakhstan United States Army Medical Research Institute of Infectious Diseases Fort DetrickFrederickMD 21702USA Integrated Research Facility at Fort Detrick Division of Clinical ResearchNational Institute of Allergy and Infectious DiseasesNational Institutes of HealthFrederickMD 21702USA Division of Infectious Diseases Department of MedicineJohns Hopkins University School of MedicineBaltimoreMD 21205USA

Crimean-Congo hemorrhagic fever(CCHF),caused by Crimean-Congo hemorrhagic fever virus(CCHFV),is endemic in Africa,Asia,and Europe,but CCHF epidemiology and epizootiology is only rudimentarily defined for most *** we summarize what is known about CCHF in Central,Eastern,and South-eastern *** multiple international and country-specific databases using a One Health approach,we defined disease risk and burden through identification of CCHF cases,anti-CCHFV antibody prevalence,and CCHFV isolation from vector *** identified 2313 CCHF cases that occurred in 1944–2021 in the three examined *** Asian countries reported the majority of cases(2,026).In Eastern Asia,China was the only country that reported CCHF cases(287).In South-eastern Asia,no cases were ***,we leveraged our previously established classification scheme to assign countries to five CCHF evidence *** countries(China,Kazakhstan,Kyrgyzstan,Tajikistan,Turkmenistan,and Uzbekistan)were assigned to level 1 or level 2 based on CCHF case reports and the maturity of the countries’surveillance *** countries(Mongolia and Myanmar)were assigned to level 3 due to evidence of CCHFV circulation in the absence of reported CCHF *** countries in Eastern and South-eastern Asia were categorized in levels 4 and 5 based on prevalence of CCHFV vector ***,this paper describes the past and present status of CCHF reporting to inform international and local public-health agencies to strengthen or establish CCHFV surveillance systems and address shortcomings.

关键词： Asia Crimean-Congo hemorrhagic fever Crimean-Congo hemorrhagic fever virus Hyalomma Tick

Bilayered semiconductor graphene nanostructures with periodically arranged hexagonal holes

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Nano Research 2015年第4期8卷 1250-1258页

作者： dmitry G. Kvashnin Peter Vancso Liubov yu. Antipina Geza I. Mark Laszlo P. Biro Pavel B. Sorokin Leonid A. Chernozatonskii Emanuel Institute of Biochemical Physics 4 Kosigina Street Moscow 119334 Russia Institute of Technical Physics and Materials Science Research Centre for Natural Sciences H- 1525 Budapest P.O. Box 49 Hungary Technological Institute of Superhard and Novel Carbon Materials 7a Centralnaya Street Troitsk Moscow 142190 Russia

我们在场新 nanostructures 的理论研究基于有周期性地安排的六角形的洞 bilayered graphene antidots 的 bilayered graphene。我们的 ab initio 计算证明在 bigraphene 的六角形的洞的那制造与从半导体显示大量电子性质到的一张空碳 ... 详细信息

我们在场新 nanostructures 的理论研究基于有周期性地安排的六角形的洞 bilayered graphene antidots 的 bilayered graphene。我们的 ab initio 计算证明在 bigraphene 的六角形的洞的那制造与从半导体显示大量电子性质到的一张空碳 nanostructure 表的形成导致二 graphene 层的附近的边的连接金属性，取决于在他们之间的洞和距离的尺寸。结果被波浪包另外支持动态运输计算基于时间依赖者 Schr 的数字答案 ? dinger 方程。

关键词：半导体纳米结构周期性排列六边形石墨波包动力学电子特性计算表结构物

Multiscale wood micromechanics and size effects study via nanoindentation

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生物质资源与工程(英文) 2023年第3期8卷 246-264页

作者： yu.i I.Golovin Alexander A.Gusev dmitry yu.Golovin Sergey M.Matveev Alexander I.Tyrin Alexander A.Samodurov Viktor V.Korenkov Inna A.Vasyu.ova Maria A.yu.ack Institute“Nanotechnology and Nanomaterials” G.R.Derzhavin Tambov State University392000 TambovRussia Department of Chemical Enzymology School of ChemistryLomonosov Moscow State University119991 MoscowRussia Research and Educational Center«Sustainable Development of the Forest Complex» Voronezh State Forestry University Named after G.F.Morozov394087 VoronezhRussia Department of Functional Nanosystems and High-Temperature Materials National University of Science and Technology“MISIS”119991 MoscowRussia

Wood as a material is a natural composite with a complex hierarchically arranged *** scale levels of wood structure contribute to its macroscopic mechanical *** nature of such characteristics and deformation modes differs radically at different scale *** macroscopic properties are well studied,and the relevant information can be easily found in the ***,the knowledge of the deformation mechanisms at the mesoscopic level corresponding to the cellular structure of early and late wood layers of annual growth rings is *** hinders building the comprehensive multiscale model of how wood mechanical properties are *** paper described the results of scanning of mechanical properties of softwood and hardwood samples,such as common pine,small-leaf lime,and pedunculate oak,by means of nanoindentation(NI).The NI technique allows varying the size of deformed region within a wide range by altering maximal load(P max)applied to the indenter so that one can re-peatedly and non-destructively test wood structural components at different scale levels on the same sample without changing the technique or *** was discovered that the effective microhardness(H eff)and Young’s modulus(E eff)decreased manifold with P max growing from 0.2 to 2000 *** drop in H effwas observed when the locally deformed region grew,and re-sulting from P max increase generally follows the rule similar to the Hall-Petch relation for yield stress,strength,and hardness initially established for metals and alloys,though obviously in those cases the underlying internal mechanisms are quite *** nature and micromechanisms of such size effect(SE)in wood revealed using NI were discussed in this *** P max<0.2 mN,the deformed area under the pyramidal Berckovich indenter was much smaller than the cell wall ***,in this case,NI measured the internal mechanical properties of the cell wall material as long as free boundaries impact

关键词： Nano/microhardness Scanning nanoindentation Annual growth ring Early and late wood Dendrochronology