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Data-Driven Design of Single-Atom Electrocatalysts with Intrinsic Descriptors for Carbon Dioxide Reduction Reaction

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Transactions of Tianjin University 2024年第5期30卷 459-469页

作者： Xiaoyun Lin Shiyu Zhen Xiaohui Wang lyudmila V.Moskaleva Peng Zhang Zhi-Jian Zhao Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China School of Economics and Management Tianjin University of Technology and EducationTianjin 300222China Department of Chemistry University of the Free StateP.O.Box 339Bloemfontein 9301South Africa Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China National Industry-Education Platform of Energy Storage Tianjin UniversityTianjin 300350China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207FujianChina

The strategic manipulation of the interaction between a central metal atom and its coordinating environment in single-atom catalysts(SACs)is crucial for catalyzing the CO_(2)reduction reaction(CO_(2)RR).However,it remains a major *** density-functional theory calculations serve as a powerful tool for catalyst screening,their time-consuming nature poses *** paper presents a machine learning(ML)model based on easily accessible intrinsic descriptors to enable rapid,cost-effective,and high-throughput screening of efficient SACs in complex *** ML model comprehensively captures the influences of interactions between 3 and 5d metal centers and 8 C,N-based coordination environments on CO_(2)RR activity and *** reveal the electronic origin of the different activity trends observed in early and late transition metals during coordination with N *** extreme gradient boosting regression model shows optimal performance in predicting binding energy and limiting potential for both HCOOH and CO *** confirm that the product of the electronegativity and the valence electron number of metals,the radius of metals,and the average electronegativity of neighboring coordination atoms are the critical intrinsic factors determining CO_(2)RR *** developed ML models successfully predict several high-performance SACs beyond the existing database,demonstrating their potential applicability to other *** work provides insights into the low-cost and rational design of high-performance SACs.

关键词： Density functional theory Machine learning CO_(2)reduction reaction Electrocatalysts High-throughput screening

Physico−mathematical model of the voltage−current characteristics of light-emitting diodes with quantum wells based on the Sah−Noyce−Shockley recombination mechanism

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Journal of Semiconductors 2024年第8期45卷 25-33页

作者： Fedor I.Manyakhin Dmitry O.Varlamov Vladimir P.Krylov lyudmila O.Morketsova Arkady A.Skvortsov Vladimir K.Nikolaev Dinamics Strength of Machines and Resisance of MaterialsMoscow Polytechnic UniversityRussia Biomedical and Electronic Means and Technologies Vladimir State UniversityRussia Computer-Aided Design and Engineering National University of Science and Technology"MISiS"Russia

Herein,a physical and mathematical model of the voltage−current characteristics of a p−n heterostructure with quantum wells(QWs)is prepared using the Sah−Noyce−Shockley(SNS)recombination mechanism to show the SNS recombination rate of the correction function of the distribution of QWs in the space charge region of diode configuration.A comparison of the model voltage−current characteristics(VCCs)with the experimental ones reveals their *** technological parameters of the structure of the VCC model are determined experimentally using a nondestructive capacitive approach for determining the impurity distribution profile in the active region of the diode structure with a profile depth resolution of up to 10Å.The correction function in the expression of the recombination rate shows the possibility of determining the derivative of the VCCs of structures with QWs with a nonideality factor of up to 4.

关键词： light-emitting diodes with quantum wells voltage−current relation nonideality factor recombination mechanism Sah−Noyce−Shockley model

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 rare case of cardiac and ophthalmic manifestations of meningococcal septicemia

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World Journal of Emergency Medicine 2024年第4期15卷 328-330页

作者： Svetlana Rachina Anastasia Shchendrygina Heshan Radeesha de Silva Svetlana Tarasenko Nadezhda Mukhina Irina Komarova Ludmila Fedina Elena Burmistrova Elvira Martens Sergey Sidorenko Vladimir Gostev Dmitry Polev Alina Saitova lyudmila Kraeva Nikita Goncharov Irina Zvetkova Department of Hospital Therapy I M Sechenov First Moscow State Medical UniversityMoscow 119048Russia Outpatient Clinic#64 Moscow 119048Russia Department of Cardiology City Clinical Hospital n.a.S.S.YudinMoscow 119048Russia Department of Medical Microbiology and Molecular Epidemiology Pediatric Research and Clinical Center for InfectiousDiseasesSaint Petersburg 197022Russia Department of Medical Microbiology North-Western State Medical University Named After I.I.MechnikovSaintPetersburg 191015Russia Department of Epidemiology Saint-Petersburg Pasteur InstituteSaint Petersburg 197101Russia

Acute pericarditis is usually a self-limiting disorder that commonly occurs due to viral etiology or unexplained *** pericarditis(MP)is a remarkably uncommon clinical entity that manifests as a complication during the acute or convalescent phase of meningococcal ***,its occurrence within the context of meningococcal septicemia has also been *** report a rare case of a previously healthy male patient who developed both acute pericarditis and uveitis as a presentation of meningococcal septicemia,with no characteristic skin rashes or meningeal signs.

关键词： acute Acute rare

The Biodiversity of Shrimp Genus Artemia from Russian Lakes:Morphometric,Cytogenetics and DNA-analysis

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 58-60页

作者： Elena BOYKO lyudmila.litvinenko Aleksandr litvinenko FSEI HPE FSUE

Shrimps of genus Artemia are the inhabitants of continental and marine waters with salinity of 70 to 350 g/l and *** is able to survive in the conditions in which other animals cannot *** is due to adaptations:effective osmoregulation system,the ability to synthesize of respiratory pigment(hemoglobin)and diapauses cysts(litvinenko ***.,2009).Cysts of this

关键词： Artemia morphometric analysis cytogenetic analysis DNA analysis salinity.

Artemia in the Salt Lakes of Russia:the Productivity of Populations,the Reserves of the Cysts and the Fisheries

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 87-88页

作者： lyudmila.litvinenko Aleksandr litvinenko Elena BOYKO Kirill KUZANOV Federal State Unitary EnterpriseGosrybcenter State Agrarian University of Northern Urals

Artemia cysts are an extremely important component of aquaculture *** is well established that the cultivation of fish and shellfish derive substantial health and growth advantages when Artemia are included in the die... 详细信息

关键词： Artemia salt lakes Russia productivity cysts

Genetic factors of reproductive disorders in female

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Reproductive and Developmental Medicine 2024年第3期8卷 186-195页

作者： Inna I.Mordovina Alina K.Chebanu Maksim Y.Donnikov Tatiana A.Sinyukova lyudmila V.Kovalenko Larisa D.Belotserkovtseva Department of Obstetrics Gynecologyand PerinatologyMedical Institute of Surgut State UniversitySurgutRussian Federation Scientific and Educational Center Medical Institute of Surgut State UniversitySurgutRussian Federation Department of Pathophysiology and General Pathology Director of the Medical InstituteSurgut State UniversitySurgutRussian Federation Surgut Regional Clinical Center for Maternity and Childhood Protection SurgutRussian Federation

Successful reproduction in mammals requires gamete development,fertilization,and early embryonic *** in any of these processes can lead to infertility,recurrent miscarriages,and congenital *** clinical recognition of the genetic causes of female reproductive insufficiency using increasingly advanced genetic technologies poses a serious challenge for reproductive medicine in the 21st ***,the current literature on genetic factors involved in reproductive losses was summarized.A literature search was conducted using Web of Science,MEDLINE,and PubMed databases for articles written in English on the genetic causes of women’s reproductive health *** implementation of whole-exome and wholegenome sequencing is expected to identify numerous genetic factors responsible for oocyte *** will aid in increasing the likelihood of successful female reproductive function,improve the outcomes of assisted reproductive technologies,optimize treatment,and facilitate genetic diagnosis of patients.

关键词： Genetics Infertility Reproductive disorders Premature ovarian insufficiency

Artemia cyst production in Russia

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Chinese Journal of Oceanology and Limnology 2015年第6期33卷 1436-1450页

作者： Liudmila I.litvinenko Aleksandr I.litvinenko Elena G.BOIKO Kirill KUTSANOV Federal State Unitary Enterprise GosrybcenterTyumenRussia State Agrarian University of Northern Urals

In Western Siberia(Russia) there are about 100 Artemia lakes with total area over 1 600 km *** these lakes are located between 51°–56°N and 61°–82°*** general these lakes are shallow(depth less than 1.5 m),small or medium size(0.1 to 10 km 2);they are chloride;their total salinity is from 40 to 250 g/*** harvesting of cysts per year is only in 20–40 *** Russia 550 tons of dry Artemia cysts(14%–18% of the world production) were harvested *** includes about 350 tons in the Altai region and 200 tons in other *** our regular 20-year study period the cyst harvest was:95 tons in Kurgan;65 tons in Omsk,20 tons in Novosibirsk,20 tons in *** of increasing cyst harvest in Russia are considered in this *** the last 30 years the harvest of cysts in Russia has increased from 7–20 to 500–600 tons.A significant influence of dryness of the year was found on productivity in selected lakes,but taken for all the lakes together,the relationship was not *** optimal salinity for productivity of cysts in the lakes was *** of productivity of the lakes and the harvesting results showed that the stocks of cysts are underutilized by approximately 1.7 times.

关键词： Artemia brine shrimp cyst production Russian saline lakes population dynamics aquacultureindustry

Elaboration of a conceptual solution for the development of the Arctic shelf from seasonally flooded coastal areas

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International Journal of Mining Science and Technology 2022年第1期32卷 113-119页

作者： Vladimir S.litvinenko Mikhail V.Dvoynikov Vladimir L.Trushko Saint-Petersburg Mining University Saint-Petersburg 199106Russia

Currently,construction of facilities in the Arctic is carried out on sand islands,but there are limitations for remote coastal *** restrictions are associated with the lack of quarries with construction sand in the immediate vicinity of the work site,as well as the risk of seasonal flooding of the *** article includes conceptual solutions for construction of modular piling in Arctic nearshore conditions,upon which drilling rigs and auxiliary equipment can be placed for the purpose of subsequent wildcatting,development and exploratory extended reach drilling wells(with measured depth about 15000 m).During the construction of the modular piling foundations,a mathematical simulation of the thermodynamic condition of the frozen ground was conducted,and the bearing capacity of the foundations was *** proposed solutions will solve these problems by constructing modular pile foundations and placing the necessary infrastructure on them,taking into account the distribution of loads during operation in seasonally flooded areas.

关键词： Drilling&drillholes Stress analysis Offshore engineering Infrastructure planning Geotechnical engineering Extended reach drilling