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Journal of Electronic Science and Technology 2020年第1期18卷 59-75页

作者： Leonid Liokumovich aleksandr Markvart Nikolai Ushakov Higher School of Applied Physics and Space Technologies Peter the Great St.Petersburg Polytechnic UniversitySt.Petersburg 195251

The paper presents a number of signal processing approaches for the spectral interferometric interrogation of extrinsic Fabry-Perot interferometers(EFPIs). The analysis of attainable microdisplacement resolution is performed and the analytical equations describing the dependence of resolution on parameters of the interrogation setup are derived. The efficiency of the proposed signal processing approaches and the validity of analytical derivations are supported by experiments. The proposed approaches allow the interrogation of up to four multiplexed sensors with attained resolution between 30 pm and 80 pm, up to three times improvement of microdisplacement resolution of a single sensor by means of using the reference interferometer and noisecompensating approach, and ability to register signals with frequencies up to 1 kHz in the case of 1 Hz spectrum acquisition rate. The proposed approaches can be used for various applications, including biomedical, industrial inspection, and others, amongst the microdisplacement measurement.

关键词： Absolute measurement dynamic measurement Fabry-Perot interferometer least-squares methods optical fiber sensors resolution analysis resolution enhancement sensor multiplexing spectral interferometry

Coronary revascularization in the elderly with stable angina

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Journal of Geriatric Cardiology 2015年第5期12卷 555-568页

作者： Kirill Lenarovich Kozlov aleksandr Andreevich Bogachev Laboratory of Age-Related Clinical Pathology Department of Clinical Gerontology and Geriatrics St. Petersburg Institute of Bioregulation and Gerontology Northwestern Branch Russian Academy of Medical Sciences Saint-Petersburg Russia Department of Cardiovascular Medicine Kirov Military Medical Academy Saint-Petersburg Russia

一个比例与冠的动脉疾病老很快正在成长。因此，他们有更多的严重冠的动脉疾病从 revascularization 导出更多的利益并且为它有更大的需要。老是一个异构的组，但是与更年轻的队相比，最佳的 revascularization 方法的选择在他们之中是... 详细信息

一个比例与冠的动脉疾病老很快正在成长。因此，他们有更多的严重冠的动脉疾病从 revascularization 导出更多的利益并且为它有更大的需要。老是一个异构的组，但是与更年轻的队相比，最佳的 revascularization 方法的选择在他们之中是更复杂的。在最近的十年，结果在外科和经皮的冠的干预(一种总线标准) 两个都戏剧性地改善了，甚至在很老的人。尽管有证据在的缺乏老，它是明显的，那根冠的动脉绕过外科(CABG ) 在更多的击的价格在长期的幸存上有更显著的效果，当一种总线标准当然是不太侵略的时。年龄本身不是为处理策略的选择的一个标准，但是老对生活和个人独立的质量经常更感兴趣而不是长寿。这件物品讨论影响 revascularization 方法的选择在的因素与稳定的咽峡炎和礼品老为做单个风险利益侧面的一个复杂算法。作为后果，在老病人的 CABG 和一种总线标准的特征被暴露。强调在脆弱和非医学的因素上被集中，包括 psychosocial，作为在做什么选择的策略的决定的必要部件。与病人的好通讯并且给他们不偏的信息被鼓励。

关键词：老年人心绞痛稳定型患者冠状动脉疾病重建方法介入治疗生活质量

Investigation of the parameters of spiral pattern in galaxies:the arm width

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Research in Astronomy and Astrophysics 2020年第8期20卷 177-180页

作者： aleksandr Mosenkov Sergey Savchenko Alexander Marchuk Department for Management of Science and Technology Development Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Applied Sciences Ton Duc Thang UniversityHo Chi Minh CityVietnam Saint Petersburg State University Department of AstrophysicsSt.Petersburg198504 Russia Special Astrophysical Observatory Russian Academy of SciencesNizhnii Arkhyz369167 Russia

In this work,we determine the parameters of spiral structure for a sample of face-on spiral *** practice,the solution to this problem is a hard task because of the diversity of observed characteristics associated with spiral structure,such as the number of arms,their shape,arm contrast,*** study spiral structure in galaxies based on an analysis of photometric cuts perpendicular to the arm *** method is based on an approximation of these slices with an analytical function and derivation of the parameters of spiral structure(arm width,asymmetry,pitch angle)using the fitted parameters from this *** algorithm has been applied to a sample of 155 galaxies selected from the Sloan Digital Sky Survey in different *** this paper,we only consider the results on arm width:most spirals exhibit an increase in their width with galactocentric *** 14 per cent of galaxies in our sample show an opposite trend or have an almost constant arm width at all radii.

关键词： methods:data analysis techniques:photometric galaxies:structure

Focused electron beam transport through a long narrow metal tube at elevated pressures in the forevacuum range

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Plasma Science and Technology 2023年第1期25卷 128-134页

作者： Ilya BAKEEV Kirill KARPOV aleksandr KLIMOV Efim OKS Aleksey ZENIN Tomsk State University of Control Systems and Radioelectronics Tomskaâ634050Russia Institute of High Current Electronics Siberian BranchRussian Academy of SciencesTomskaâ634055Russia

We present here our investigations of the features of focused electron beam transport in free space at elevated pressures of a few *** have explored the effect of the beam accelerating voltage,operating gas pressure,and magnetic focusing upon the trajectory of beam electrons in the crossover region,in particular on the beam convergence and divergence *** is shown that for the forevacuum pressure range of 2-5 Pa explored,a distinctive feature of the propagation of a focused electron beam with a current of up to 20 mA at an accelerating voltage of 10-20 kV is the difference in the angles of convergence(before the focus)and divergence(after the focus).Whereas at a low pressure of 2 Pa the divergence angle is smaller than the convergence angle,as the pressure increases the divergence angle increases and for pressures greater than 5 Pa the divergence angle is greater than the convergence *** results obtained were used in experiments on electron beam transport through a long narrow metal tube with a diameter of 5.8-9.2 mm and length of 10-30 *** show that for a 30 cm long tube of 7.5 mm diameter,the focused beam transmission can exceed 70%.

关键词： focused electron beam plasma electron source forevacuum pressure range long metal tube

Malignant biliary obstruction:From palliation to treatment

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World Journal of Gastrointestinal Oncology 2016年第6期8卷 498-508页

作者： Brian R Boulay aleksandr Birg Division of Gastroenterology and Hepatology Department of MedicineUniversity of Illinois Hospital and Health Sciences System Department of Medicine University of Illinois Hospital and Health Sciences System

Malignant obstruction of the bile duct from cholan-giocarcinoma,pancreatic adenocarcinoma,or other tumors is a common problem which may cause debilitating symptoms and increase the risk of subsequent *** optimal treatment-including the decision whether to treat prior to resection-depends on the type of malignancy,as well as the stage of *** biliary drainage is generally discouraged due to the risk of infectious complications,though some situations may *** who require neoadjuvant therapy will require decompression for the prolonged period until attempted surgical *** pancreatic cancer patients,self-expanding metallic stents are superior to plastic stents for achieving lasting decompression without stent *** cholangiocarcinoma patients,treatment with percutaneous methods or nasobiliary drainage may be superior to endoscopic stent placement,with less risk of infectious complications or *** patients of either malignancy who have advanced disease with palliative goals only,the choice of stent for endoscopic decompression depends on estimated survival,with plastic stents favored for survival of < 4 *** endoscopic techniques may actually extend stent patency and patient survival for these patients by achieving local control of the obstructing *** photodynamic therapy and radiofrequency ablation may play a role in extending survival of patients with malignant biliary obstruction.

关键词： Pancreatic neoplasms Cholangiocarcinoma Extrahepatic cholestasis Stents Catheter ablation

Multilayered organic semiconductors for high performance optoelectronic stimulation of cells

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Nano Research 2023年第4期16卷 5809-5816页

作者： aleksandr Markov Alexander Gerasimenko Annie-Kermen Boromangnaeva Sofia Shashova Elena Iusupovskaia Ulyana Kurilova Vita Nikitina Irina Suetina Marina Mezentseva Mikhail Savelyev Peter Timashev Dmitry Telyshev Xing-Jie Liang Institute for Bionic Technologies and Engineering I.M.Sechenov First Moscow State Medical UniversityMoscow 119991Russia Institute of Biomedical Systems National Research University of Electronic TechnologyZelenogradMoscow 124498Russia Chemistry Department Lomonosov Moscow State UniversityLeninskie Gory1/3Moscow 119991Russia Ivanovsky Institute of Virology N.F.Gamaleya National Center of Epidemiology and MicrobiologyMoscow 123098Russia World-Class Research Center“Digital Biodesign and Personalized Healthcare” I.M.Sechenov First Moscow State Medical UniversityMoscow 119991Russia Laboratory of Clinical Smart Nanotechnologies I.M.Sechenov First Moscow State Medical UniversityMoscow 119991Russia Institute for Regenerative Medicine I.M.Sechenov First Moscow State Medical UniversityMoscow 119991Russia CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology of ChinaBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

The efficiency of devices for bioelectronic applications,including cell and tissue stimulation,is heavily dependent on the scale and the performance *** miniaturization of stimulation electrodes,achieving a sufficiently high current pulse to elicit action potentials becomes an *** we report on our approach of vertically stacking organic p-n junctions to create highlyefficient multilayered organic semiconductor(MOS)photostimulation device.A tandem arrangement substantially increases the photovoltage and charge density without sacrificing lateral area,while not exceeding 200-500 nm of *** devices generate 4 times higher voltages and at least double the charge densities over single p-n junction devices,which allow using lower light intensities for *** devices show an outstanding stability in the electrolyte that is extremely important for forthcoming in vivo ***,we have validated MOS devices performance by photostimulating fibroblasts and neuroblasts,and found that using tandem devices leads to more effective action potential *** a result,we obtained up to 4 times enhanced effect in cell growth density using 3 p-n layered *** results corroborate the conclusion that MOS technology not only can achieve parity with state-of-the-art silicon devices,but also can exceed them in miniaturization and performance for biomedical applications.

关键词： bioelectronics organic semiconductors wireless stimulation fibroblasts neuroblastoma cells

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丛式井平台设计及井丛分组优化

石油勘探与开发 2019年第3期46卷 588-593页

作者： ABRAMOV aleksandr School of Engineering Edith Cowan University

改进并测试了包含30多个钻井工程参数的技术-经济模型,通过新开发的计算机程序列出平台上的井丛分组方式并计算其技术经济效益。针对含24口初始产油量不同的井的平台,研究分析了7种钻井方案,得出了3种折现率和5种产油量递减率条件下净现... 详细信息

改进并测试了包含30多个钻井工程参数的技术-经济模型,通过新开发的计算机程序列出平台上的井丛分组方式并计算其技术经济效益。针对含24口初始产油量不同的井的平台,研究分析了7种钻井方案,得出了3种折现率和5种产油量递减率条件下净现值(NPV)最优的分组方式。研究表明,针对井丛井数不等的井平台,可能只需对现有设计进行轻微调整(改变几个井丛的布局)就能得到最大净现值;相对净现值增幅与净现值的绝对值成反比;相比常规项目中具有相等井数的井丛,采用井丛井数不等的分组方式可以使NPV增幅达到1%,页岩地层开发项目NPV增幅可达2%或更多,边际油田项目增幅高达45%。

关键词：平台钻井丛式井平台井分组批量钻井井丛

Palladium-Catalyzed Carbonylation of Multifunctionalized Substituted Alkynes to Quinolinone Derivatives under Mild Conditions

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Chinese Journal of Chemistry 2023年第23期41卷 3223-3228页

作者： aleksandr Voronov Francesco Pancrazzi Ana Maria Constantin Raimondo Maggi Raffaella Mancuso Bartolo Gabriele Diego Olivieri Carla Carfagna Alessandro Casnati Francesco Rispoli Laura Baldini Nicola Della Ca Department of Chemistry Life Sciences and Environmental Sustainability (SCVSA)University of ParmaParco Area delle Scienze17/A43124 Parma (PR)Italy Center for Energy and Environment (CIDEA) University of ParmaParco Area delle Scienze 181/A43124 Parma (PR)Italy Laboratory of Industrial and Synthetic Organic Chemistry (LISOC) Department of Chemistry and Chemical TechnologiesUniversity of CalabriaVia P.Bucci 12/C87036 Arcavacata di RendeCosenza (CS)Italy Department of Biomolecular Sciences University of Urbino “Carlo Bo”Piazza Rinascimento 661029 Urbino (PU)Italy Department of Industrial Chemistry “T.Montanari” University of BolognaViale Risorgimento 440136 Bologna (BO)Italy

A highly selective palladium-catalyzed carbonylation of 2-alkynylanilines bearing an amide moiety to condensed six-membered heterocyclic structures has been developed under mild conditions(room temperature and atmospheric pressure of CO).The carbonylative protocol is also compatible with CO surrogates,such as benzene-1,3,5-triyl triformate(TFBen)or the newly developed calix[6]arenes functionalized with six formate groups(CLX[6]CO),which are both capable to release CO in situ.A series of tricyclic fused heterocycles containing the important oxazino-quinolinone scaffold have been selectively obtained(only the 6-endo-dig cyclization mode has been observed)in good to excellent yields(up to 99%).

关键词： Pd-catalysis Carbonylation Alkynes CO surrogates 6-endo-dig Calixarenes C1 building blocks Domino reactions

On Invertibility of Some Functional Operators with Shift

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Applied Mathematics 2022年第8期13卷 651-657页

作者： aleksandr Karelin Anna Tarasenko Manuel Gonzalez-Hernandez Institute of Basic Sciences and Engineering Hidalgo State University Pachuca Mexico

In this paper, we consider operators arising in the modeling of renewable systems with elements that can be in different states. These operators are functional operators with non-Carlemann shifts and they act in Holder spaces with weight. The main attention was paid to non-linear equations relating coefficients to operators with a shift. The solutions of these equations were used to reduce the operators under consideration to operators with shift, the invertibility conditions for which were found in previous articles of the authors. To construct the solution of the non-linear equation, we consider the coefficient factorization problem (the homogeneous equation with a zero right-hand side) and the jump problem (the non-homogeneous equation with a unit coefficient). The solution of the general equation is represented as a composition of the solutions to these two problems.

关键词： Operator with a Non-Carlemann Shift Inverse Operator Non-Linear Equation Factorization of Coefficient Equation with Unit Coefficient

Septic arthritis of the hand:Current issues of etiology,pathogenesis,diagnosis,treatment

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World Journal of Orthopedics 2022年第7期13卷 622-630页

作者： Konstantin V Lipatov Arthur Asatryan George Melkonyan aleksandr D Kazantcev Ekaterina I Solov'eva Urii E Cherkasov Department of General Surgery Institute of Clinical Medicine named after N.V.SklifosovskySechenov First Moscow State Medical University(Sechenov University)Moscow 119021Russia Wound and Wound Infection Surgery State Budgetary Institution“City Clinical Hospital named after S.S.Yudin of Moscow Healthcare Department”Moscow 115446Russia Department of General Surgery Physician of The Hospital for War Veterans No 3Moscow 129336Russia Department of General Surgery I.M.Sechenov First Moscow State Medical UniversityMoscow 119048Russia

Septic arthritis of the hand is a serious disease that often results in dysfunction of the joint or even the need to perform amputation of the *** rank second in the frequency of occurrence after lesions of the knee *** points concerning the etiology,the timing of the development of cartilage destruction and the development of osteomyelitis,approaches to surgical treatment,the duration of antibiotic therapy,and the start of rehabilitation measures remain the subject of numerous *** on a search in the PubMed,Web of Science and Google Scholar databases down to 1990-2021,publications on septic arthritis of the hand were found and *** following inclusion criteria were used in our review:(1) Septic arthritis of the hand;(2) Published in a peer review journal;(3) Written in English;and(4) Full text version *** were excluded if they met any of the following criteria:(1) Letters;(2) Articles published in abstract form only;and(3) Cadaveric *** arthritis of the hand was characterized by the most frequent damage to the joints of the index and middle fingers(> 50% of cases).Up to 90% of cases,the infection enters the joint as a result of penetrating trauma,animal bites,*** aureus became the most frequently isolated microorganism(30%-55%),and its polyantibiotic-resistant form Methicillin-resistant Staphylococcus aureus was found,according to various sources,from 0% to 73% among all isolated Staphylococcus *** arthritis,Pasteurella multocida(6%-11%) is often isolated as a result of animal *** cartilage destruction in the experiment developed within 24-48 h after *** clinical studies,the development of osteomyelitis was noted when treatment was delayed by more than 10 d.X-ray data during the first two weeks were *** of surgical treatment of septic *** and surgical treatment,and with the development of osteomyelitis,the implementation of arthro

关键词： Septic arthritis Hand Staphylococcus aureus Metacarpophalangeal joint Interphalangeal joint Rehabilitation