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Exploring van der Waals materials with high anisotropy:geometrical and optical approaches

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Light(Science & Applications) 2024年第4期13卷 645-653页

作者： Aleksandr S.Slavich Georgy A.Ermolaev mikhail K.Tatmyshevskiy Adilet N.Toksumakov Olga G.Matveeva Dmitriy V.Grudinin Kirill V.Voronin Arslan Mazitov Konstantin V.Kravtsov Alexander V.Syuy Dmitry M.Tsymbarenko mikhail S.Mironov Sergey M.Novikov Ivan Kruglov Davit A.Ghazaryan Andrey A.Vyshnevyy Aleksey V.Arsenin Valentyn S.Volkov Kostya S.Novoselov Moscow Center for Advanced Studies Kulakova str.20Moscow 123592Russia. Emerging Technologies Research Center XPANCEOInternet CityEmmay TowerDubaiUnited Arab Emirates. Donostia International Physics Center(DIPC) Donostia/San-Sebastián 20018Spain. Institute of Materials Ecole Polytechnique Federale de Lausanne1015 LausanneSwitzerland. Department of Chemistry Lomonosov Moscow State UniversityMoscow 119991Russia. Laboratory of Advanced Functional Materials Yerevan State UniversityYerevan 0025Armenia. National Graphene Institute(NGI) University of ManchesterManchester M139PLUK. Department of Materials Science and Engineering National University of SingaporeSingapore 03-09 EASingapore. Institute for Functional Intelligent Materials National University of Singapore117544 SingaporeSingapore

The emergence of van der Waals(vdW)materials resulted in the discovery of their high optical,mechanical,and electronic anisotropic properties,immediately enabling countless novel phenomena and *** success inspired an intensive search for the highest possible anisotropic properties among vdW ***,the identification of the most promising among the huge family of vdW materials is a challenging quest requiring innovative ***,we suggest an easy-to-use method for such a survey based on the crystallographic geometrical perspective of vdW materials followed by their optical *** our approach,we found As2S3 as a highly anisotropic vdW *** demonstrates high in-plane optical anisotropy that is~20%larger than for rutile and over two times as large as calcite,high refractive index,and transparency in the visible range,overcoming the century-long record set by *** these benefits,As2S3 opens a pathway towards nextgeneration nanophotonics as demonstrated by an ultrathin true zero-order quarter-wave plate that combines classical and the Fabry–Pérot optical phase ***,our approach provides an effective and easy-to-use method to find vdW materials with the utmost anisotropic properties.

关键词： anisotropy anisotropic high

Impact of doping profiles on the formation of laser-active centers in bismuth-doped GeO_(2)–SiO_(2)glass fibers

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Photonics Research 2024年第2期12卷 260-270页

作者： SERGEY ALYSHEV ALEXANDER VAKHRUSHEV ALEKSANDR KHEGAI ELENA FIRSTOVA KONSTANTIN RIUMKIN mikhail MELKUMOV LYUDMILA ISKHAKOVA ANDREY UMNIKOV SERGEI FIRSTOV Prokhorov General Physics Institute of the Russian Academy of Sciences Dianov Fiber Optics Research Center119333 MoscowRussia Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences 603951 Nizhny NovgorodRussia

Multi-wavelength-band transmission technology based on the exploitation of the extended spectral region is considered as a potential approach to increase the transmission capacity in the deployed fiber-optic communication *** development of optical amplifiers operating in the O-,E-,S-,and U-telecom bands is an extremely important challenge for the successful implementation of this ***-doped fibers are of increasing interest as gain materials,which can be used to provide broadband amplification in the mentioned telecom *** is due to the ability of Bi ions incorporated into glass network to form bismuth active centers(BACs)with specific optical properties,which are primarily determined by the glass *** this work,the impact of the doping profiles of both Ge atoms as glass modifiers and Bi ions on the BACs formation is studied using a series of bismuth-doped fibers fabricated by the modified chemical vapor deposition(MCVD)*** Bi-to-BACs conversion efficiency in various spatial regions of the studied samples is *** is turned out that for high-Bi concentration regions,the conversion efficiency is very low(less than 10%).In addition,the relationship of the conversion efficiency to the distribution of Bi ions and/or Ge atoms is ***,a continuous-wave laser at 1.46μm with a record slope efficiency of 80%is demonstrated using a Bi-doped fiber with confined doping profile,where the Bi-to-BACs conversion efficiency is 35%.This paper provides new information which might help to facilitate understanding of the features of Bi-doped fibers and their potentially achievable characteristics.

关键词： fiber fibers bismuth

A systematic review of cytoreductive prostatectomy outcomes and complications in oligometastatic disease

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Asian Journal of Urology 2024年第2期11卷 208-220页

作者： Andrey Morozov Leonid Chuvalov Mark Taratkin mikhail Enikeev Leonid Rapoport Nirmish Singla Eric Barret Elena Poddubskaya Maria Borodina Georg Salomon Juan Gomez Rivas Dmitry Enikeev Institute for Urology and Reproductive Health Sechenov UniversityMoscowRussia Young Academic Urologists EAUthe Netherlands Department of Urology James Buchanan Brady Urological InstituteThe Johns Hopkins University School of MedicineBaltimoreUSA Department of Urology Institut Mutualiste MontsourisParisFrance Sechenov University MoscowRussia Hertsen Moscow Oncology Research InstituteMoscowRussia Hertsen Moscow Oncology Research Institute MoscowRussia Martini Clinic University Medical Center Hamburg-EppendorfHamburgGermany Department of Urology Clinico San Carlos University HospitalMadridSpain Department of Urology Medical University of ViennaViennaAustria

Objective: To analyze outcomes and complications of cytoreductive prostatectomy (CRP) for oligometastatic prostate cancer (PCa) in order to elucidate its role in this ***: We performed a systematic literature search using three databases (Medline, Scopus, and Web of Science). The primary endpoints were oncologic outcomes. The secondary endpoints were complication rates and functional ***: In all studies, overall survival was better or at least comparable variable in the groups with CRP compared to no local treatment. The greatest benefit from CRP in 5-year overall survival in one study was 67.4% for CRP versus 22.5% for no local treatment. Cancer-specific survival (CSS) showed the same trend. Several authors found significant benefits from CSS in the CRP group: from 79% vs. 46% to 100% vs. 61%. CRP was a predictor of better CSS (hazard ratio 0.264, p=0.004). Positive surgical margin rates differed widely from 28.6% to 100.0%. Urinary continence in CRP versus RP for localized PCa was significantly lower (57.4% vs. 90.8%, p<0.0001). Severe incontinence occurred seldom (2.5%-18.6%). Total complication rates after CRP differed widely, from 7.0% to 43.6%. Rates of grades 1 and 2 events prevailed. Patients on ADT alone also showed a considerable number of complications varying from 5.9% to 57.7%.Conclusion: CRP improves medium-term cancer control in patients with oligometastatic PCa. The morbidity and complication rates of this surgery are comparable with other approaches, but postoperative incontinence rate is higher compared with RP for localized disease.

关键词： Systematicreview Prostatecancer Oligometastatic Bone metastases Cytoreductive prostatectomy

On the “Onion Husk” Algorithm for Approximate Solution of the Traveling Salesman Problem

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1557-1570页

作者： mikhail E. Abramyan Nikolai I. Krainiukov Boris F. Melnikov Faculty of Computational Mathematics and Cybernetics Shenzhen MSU-BIT University Shenzhen China Department of Algebra and Discrete Mathematics Southern Federal University Rostov-on-Don Russian Federation

The paper describes some implementation aspects of an algorithm for approximate solution of the traveling salesman problem based on the construction of convex closed contours on the initial set of points (“cities”) and their subsequent combination into a closed path (the so-called contour algorithm or “onion husk” algorithm). A number of heuristics related to the different stages of the algorithm are considered, and various variants of the algorithm based on these heuristics are analyzed. Sets of randomly generated points of different sizes (from 4 to 90 and from 500 to 10,000) were used to test the algorithms. The numerical results obtained are compared with the results of two well-known combinatorial optimization algorithms, namely the algorithm based on the branch and bound method and the simulated annealing algorithm. .

关键词： Branch and Bound Method Contour Algorithm “Onion Husk” Algorithm Simulated Annealing Method Traveling Salesman Problem

On Some Properties of Graph of Prefix Code

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1571-1581页

作者： Nikolai I. Krainiukov mikhail E. Abramyan Boris F. Melnikov Faculty of Computational Mathematics and Cybernetics Shenzhen MSU-BIT University Shenzhen China Department of Algebra and Discrete Mathematics Southern Federal University Rostov-on-Don Russian Federation

We investigate decomposition of codes and finite languages. A prime decomposition is a decomposition of a code or languages into a concatenation of nontrivial prime codes or languages. A code is prime if it cannot be decomposed into at least two nontrivial codes as the same for the languages. In the paper, a linear time algorithm is designed, which finds the prime decomposition. If codes or finite languages are presented as given by its minimal deterministic automaton, then from the point of view of abstract algebra and graph theory, this automaton has special properties. The study was conducted using system for computational Discrete Algebra GAP. .

关键词： Finite Languages Minimal Deterministic Automata Concatenation Codes Graph of Automaton Free Algebra

Gut Microbiota and Cytokine Profile in Cirrhosis

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Journal of Clinical and Translational Hepatology 2024年第8期12卷 689-700页

作者： Irina Efremova Roman Maslennikov Anna Kudryavtseva Anastasia Avdeeva George Krasnov mikhail Diatroptov Vyacheslav Bakhitov Salekh Aliev Natalia Sedova Maria Fedorova Elena Poluektova Oxana Zolnikova Nariman Aliev Anna Levshina Vladimir Ivashkin Department of Internal Medicine Gastroenterology and HepatologySechenov UniversityMoscowRussia Post-Genomic Research Laboratory Engelhardt Institute of Molecular BiologyRussian Academy of SciencesMoscowRussia V.A.Nasonova Research Institute of Rheumatology MoscowRussia Consultative and Diagnostic Center 2 of the Moscow Health Department MoscowRussia First Hospital Surgery Department Pirogov Russian National Research Medical UniversityMoscowRussia Department of Clinical Laboratory Diagnostics FGBOU DPO“Russian Medical Academy of Continuing Professional Education of the Ministry of Health of the Russian Federation”MoscowRussia The Interregional Public Organization“Scientific Community for the Promotion of the Clinical Study” MoscowRussia

Background and Aims:Gut dysbiosis and abnormal cytokine profiles are common in *** study aimed to evaluate the correlations between ***:In the blood plasma of cirrhosis patients and controls,27 cytokines were examined using a multiplex *** plasma levels of nitrites(stable metabolites of the endothelial dysfunction biomarker nitric oxide)and lipopolysaccharide(LPS)were *** fecal microbiota was assessed by 16S rRNA gene ***:Levels of IL-1b,IL-2,IL-6,IL-13,IP-10,IFN-g,TNF-a,LPS,and nitrites were higher in cirrhosis patients than in controls,while levels of IL-4,IL-7,and PDGF-BB were *** LPS level was directly correlated with the levels of IL-1b,IL1-Ra,IL-9,IL-17,PDGF-BB,IL-6,TNF-a,and *** nitrite level was significantly directly correlated with the levels of TNF-a,GM-CSF,IL-17,and IL-12,and inversely correlated with the IL-7 ***-a levels were directly correlated with ascites severity and the abundance of Negativicutes,Enterobacteriaceae,Veillonellaceae,and Klebsiella,while inversely correlated with the abundance of Firmicutes,Clostridia,and ***-g levels were directly correlated with the abundance of Bacteroidaceae,Lactobacillaceae,Bacteroides,and Megasphaera,and inversely correlated with the abundance of Verrucomicrobiota,Akkermansiaceae,Coriobacteriaceae,Akkermansia,Collinsella,and ***-1b levels were directly correlated with the abundance of Comamonadaceae and Enterobacteriaceae and inversely correlated with the abundance of Marinifilaceae and ***-6 levels were directly correlated with the abundance of Enterobacteriaceae,hepatic encephalopathy,and ascites severity,and inversely correlated with the abundance of Peptostreptococcaceae,Streptococcaceae,and ***:The abundance of harmful gut microbiota taxa and endotoxinemia directly correlates with the levels of proinflammatory cytokines.

关键词： Endotoxin Leaky gut Gut microbiome Systemic inflammation Gut-liver axis Endotoxemia

Clinical and laboratory features of juvenile idiopathic arthritis with wrist involvement:Results of a retrospective cohort study

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World Journal of Clinical Pediatrics 2024年第3期13卷 22-33页

作者： Lyubov Sorokina Maria Kaneva Artem Artamonov Natalia Gordeeva Irina Chikova mikhail Kostik Hospital Pediatry Saint Petersburg State Pediatric Medical UniversitySaint Petersburg 194100Russia Department of Consulting and Diagnostic Saint-Petersburg Children’s Hospital#2n.a.Saint Mary MagdaleneSaint Petersburg 199004Russia Research Laboratory of Autoimmune and Autoinflammatory Diseases Almazov National Medical Research CenterSaint-Petersburg 197341Russia

BACKGROUND Previous studies in the pre-biological era showed an association of wrist inflammation in juvenile idiopathic arthritis(JIA)with progressive disease course,polyarticular involvement and failure of methotrexate *** To describe features of JIA,associated with wrist *** Data from about 753 JIA patients were included in this retrospective cohort *** clinical and laboratory features of patients with and without wrist involvement were *** Wrist involvement was found in oligoarthritis(5.8%),RF(−)/RF(+)polyarthritis(44.9%/15.0%),enthesitis-related arthritis(17.7%),and systemic(58.6%)JIA *** wrist involvement was typical for oligoarthritis patients,bilateral involvement was either equal to that of unilateral involvement or was more frequent in other *** arthritis was found to be associated with female sex,a low incidence of uveitis,and more indications of systemic inflammation,including elevated levels of C-reactive protein,erythrocyte sedimentation rate,and platelets,as well as involvement of the cervical spine,temporomandibular,shoulder,elbow,metacarpophalangeal,proximal interphalangeal,distal interphalangeal,hip,ankle,and tarsus *** number of patients with hip osteoarthritis and hip replacement was also *** arthritis was associated with a lower probability of achieving remission[hazard ratio(HR)=1.3(95%CI:1.0-1.7),P=0.055],and a higher probability of being treated with biologics[HR=1.7(95%CI:1.3-2.10,P=0.00009)].CONCLUSION Wrist arthritis in JIA patients is a marker of a severe disease course,characterized by more intensive inflammation,unfavorable outcomes,*** more intensive treatment with early administration of *** monitoring of wrist inflammation with ultrasound and MR assessment with early biological treatment might improve the outcomes.

关键词： Wrist Hand Juvenile idiopathic arthritis Outcomes Biologics Methotrexate

Expanded Porphyrin Exhibiting Off-Centered Out-of-Plane Coordination to Dysprosium

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CCS Chemistry 2024年第7期6卷 1731-1738页

作者： Dmitry I.Nazarov Jorge Labella Alexey V.Kuzmin Maxim A.Faraonov Evgenii N.Ivanov Salavat S.Khasanov Tomas Torres mikhail K.Islyaikin Dmitri V.Konarev Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS 142432 Chernogolovka Department of Organic Chemistry Universidad Autonoma de Madrid28049 Madrid Institute of Solid-State Physics RAS 142432 Chernogolovka Research Institute of Macroheterocycles Ivanovo State University of Chemistry and Technology15300 Ivanovo G.A.Krestov Institute of Solution Chemistry of the Russian Academy of Sciences 153045 Ivanovo Institute for Advanced Research in Chemical Sciences Universidad Autonoma de Madrid28049 Madrid IMDEA-Nanociencia 28049 Madrid

The complexation of high-spin lanthanides to porphyrinoids is a powerful strategy for the development of advanced molecular *** this context,the use of expanded porphyrinoids remains elusive since their coordination chemistry is challenging to ***,taking inspiration from on-surface chemistry,we explored the coordination of Dy^(3+)to a six-membered porphyrinoid,namely,the hemihexaphyrazine ***,we observed the selective formation of a mono-nuclear off-centered,out-of-plane H_(2)Hhp-Dy^(3+)complex when performing the complexation under reductive *** this reaction,the oxidation state of the macrocycle did not *** X-ray diffraction analysis,we found that the coordination number of Dy in this complex was *** macrocycle cocrystallized with decamethylcobaltocene(Cp_(2)^(*)Co)molecules,giving rise to a wellordered solid-state packing,governed byπ-π*** a result of this organization,a small magnetic coupling between the neighboring molecules was *** in all,this work provides key insights into the coordination of magnetically active metals with expanded porphyrinoids,thus motivating the development of advanced spintronic devices.

关键词： porphyrins dysprosium macrocycle coordination chemistry magnetism

Semitransparent organic photovoltaics enabled by transparent p-type inorganic semiconductor and near-infrared acceptor

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Journal of Energy Chemistry 2024年第9期96卷 351-358页

作者： Xue Yan Jiayu Wang Wei He Top Archie Dela Peña Can Zhu Hailin Yu Yingyue Hu Cenqi Yan Shengqiang Ren Xingyu Chen Zhe Wang Jiaying Wu Mingjie Li Jianlong Xia Lei Meng Shirong Lu Dewei Zhao mikhail Artemyev Yongfang Li Pei Cheng College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065SichuanChina Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong Kong 999077China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering&Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationSichuan UniversityChengdu 610065SichuanChina Department of Material Science and Technology Taizhou UniversityTaizhou 318000ZhejiangChina Advanced Materials Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400GuangdongChina State Key Laboratory of Advanced Technology for Materials Science and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070HubeiChina Department of Civil1nd Environmental Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China Research Institute for Physical Chemical Problems Belarusian State UniversityMinsk 220006Belarus

Semitransparent organic photovoltaics(STOPVs)have gained wide attention owing to their promising applications in building-integrated photovoltaics,agrivoltaics,and floating *** semiconductors with high charge carrier mobility usually have planar and conjugated structures,thereby showing strong absorption in visible *** this work,a new concept of incorporating transparent inorganic semiconductors is proposed for high-performance ***(I)thiocyanate(CuSCN)is a visible-transparent inorganic semiconductor with an ionization potential of 5.45 eV and high hole *** transparency of CuSCN benefits high average visible transmittance(AVT)of *** energy levels of CuSCN as donor match those of near-infrared small molecule acceptor BTP-eC9,and the formed heterojunction exhibits an ability of exciton *** mobility of CuSCN contributes to a more favorable charge transport channel and suppresses charge *** control STOPVs based on PM6/BTP-eC9 exhibit an AVT of 19.0%with a power conversion efficiency(PCE)of 12.7%.Partial replacement of PM6 with CuSCN leads to a 63%increase in transmittance,resulting in a higher AVT of 30.9%and a comparable PCE of 10.8%.

关键词： Copper(I)thiocyanate Inorganic semiconductor Semitransparent Organic photovoltaics Charge dissociation