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Preservation of aberrant right hepatic arteries does not affect safety and oncological radicality of pancreaticoduodenectomy-own results and a systematic review of the literature

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Hepatobiliary Surgery and Nutrition 2022年第1期11卷 25-37页

作者： Cedrik Pyras Carsten Lukas Monika Janot-Matuschek Torsten Herzog Andrea Tannapfel Waldemar Uhl Orlin belyaev Department of Surgery St.Josef HospitalRuhr University BochumBochumGermany Institute of Radiology St.Josef HospitalRuhr University BochumBochumGermany Institute of Pathology Ruhr University BochumBochumGermany

Background:Aberrant right hepatic arteries(aRHA)are frequently encountered during pancreaticoduodenectomy(PD).Their effects on surgical morbidity and resection margin are still *** study aimed to compare the short term and long term outcomes in patients with and without ***:A single-center retrospective analysis of 353 consecutive PD during a 5-year period was *** type of arterial supply was determined preoperatively by CT and confirmed at *** types III-VI included some type of aRHA and comprised the study *** types I and II were considered irrelevant for PD and used as *** endpoints were the rates of major postoperative complications and the rate of R0-resection in cases of malignant *** endpoints included duration of surgery,postoperative stay,number of harvested lymph nodes and survival in patients with pancreatic *** results were compared to existent data using a systematic review of the ***:No aRHA had to be sacrificed or *** morbidity and specific complications such as post-pancreatectomy hemorrhage(PPH),pancreatic fistula and bile leak were the same in patients with and without *** was no significant difference in operative time,blood loss,length of ICU-and hospital *** with malignancy had similar high rates of R0-resection and identical number of harvested lymph *** of patients with pancreatic cancer was not affected by ***:aRHA may be preserved in virtually all cases of PD for resectable pancreatic head lesions without increasing surgical morbidity and without compromising oncological radicality in patients with cancer,provided the variant anatomy is being recognised on preoperative CT and a meticulous surgical technique is used.

关键词： Replaced hepatic artery accessory hepatic artery pancreatic cancer pancreatic surgery resection margin complications vascular anomalies

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Investigation of Changes in the Fine Structure of Graphitizing Carbon Materials during Heat Treatment by X-Ray Diffraction Analysis

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Journal of Materials Science and Chemical Engineering 2020年第10期8卷 11-20页

作者： vasiliy A. Tyumentsev Alfiya G. Fazlitdinova Condensed Matter Physics Department Physics Faculty Chelyabinsk State University Chelyabinsk Russia

The properties of synthetic graphite materials, widely used in advanced fields, are determined by their structure, which is formed in the process of high-temperature (~2500°C) heat treatment. The fine structure of a graphitizing carbon material based on petroleum coke containing 1.3 wt% S at various stages of graphitization was studied by X-ray diffraction analysis. Some of the samples contained the addition of dispersed Fe2O3. It is shown that the heat-treated material in the range 1200°C - 2600°C is heterogeneous, its component composition is determined by the processing temperature and the presence of Fe2O3 additive. The observed dependence of the component composition on the heat treatment temperature suggests that the process of graphitization of the carbon material, apparently, develops through a number of metastable states.

关键词： Graphitization X-Ray Diffraction Analysis Microstructure Coherent Scattering Regions

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Mbius-invariant curve and surface energies and their applications

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Science China(Information Sciences) 2013年第9期56卷 18-27页

作者： YOSHIZAWA Shin belyaev Alexander Image Processing Research Team RIKEN Institute of Sensors Signals & Systems Heriot-Watt University

Curvature-based surface energies are frequently used in mathematics, physics, thin plate and shell engineering, and membrane chemistry and biology studies. Invariance under rotations and shifts makes curvature-based energies very attractive for modeling various phenomena. In computer-aided geometric design, the Willmore surfaces and the so-called minimum variation surfaces (MVS) are widely used for shape modeling purposes. The Willmore surfaces are invariant w.r.t conformal transformations (Mbius or conformal invariance), and studied thoroughly in differential geometry and related disciplines. In contrast, the minimum variation surfaces are not conformal invariant. In this paper, we suggest a simple modification of the minimum variation energy and demonstrate that the resulting modified MVS enjoy Mbius invariance (so we call them conformal-invariant MVS or, shortly, CI-MVS). We also study connections of CI-MVS with the cyclides of Dupin. In addition, we consider several other conformal-invariant curve and surface energies involving curvatures and curvature derivatives. In particular, we show how filtering with a conformal-invariant curve energy can be used for detecting salient subsets of the principal curvature extremum curves used by Hosaka and co-workers for shape quality inspection purposes.

关键词： Willmore energy minimum variation surfaces Dupin’s cyclides Mbius/conformal invariance

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Synthesis and bioactivity of N-tert-butyl-N′-acyl-5-methy 1-1,2,3-thiadiazole-4-carbohydrazides

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Chinese Chemical Letters 2012年第11期23卷 1233-1236页

作者： Wu Tao Mao Hui Zhao Zhi Jin Fan Xiao Tian Ji Xue Wen Hua Tatiana Kalinina Yu.Morzherin Yury A.Bakulev vasiliy Department of Chemistry Tianjin UniversityTianjin 300072China State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianfin 300071China The Ural Federal University Named after the First President of Russia B.N.Yeltsin Yeltsin UrFU 620002EkaterinburgRussia

A series of novel N-tert-butyl-N＇-acyl-5-methyl-1,2,3-thiadiazole-4-carbohydrazides were designed and synthesized. Their structures were characterized by melting points, ^1H NMR, IR, ESI-MS, and elemental analysis. The bioassay tests indicated that compound 7o exhibited excellent direct anti-TMV activity and induction activity in vivo at 50μg/mL, which was better than that of Ninamycin and tiadinial. Our studies indicated that 1,2,3-thiadiazole was an active substructure for novel pesticide development.

关键词： Antivirus activity Systemic acquired resistance Synthesis 1,2,3-Thiadiazole Diacylhydrazine

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Laboratory investigations of the thermal strain of frozen soils,using fiber-optic strain gauges based on Bragg gratings

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Research in Cold and Arid Regions 2017年第3期9卷 192-196页

作者： Aleksey Marchenko Nicolai Vasiliev Artem Nesterov Yuri Kondrashov Nikolay belyaev Department of Arctic Technology UNIS The Laboratory of Static Research of Soils JSC "Vedeneev VNIIG" Peter the Great St. Petersburg Polytechnic University (SPb PU)

Measurements of the thermal deformations of frozen soil samples were performed in the cold laboratory in temperature range from 0°C to-12°*** Bragg Gratings strain and temperature sensors were used to measure the deformation and temperature inside the samples.A number of tests with the samples prepared from Kaolin and Cambrian clay saturated with fresh water,and prepared from fine and silt sand saturated with fresh or saline water,are *** deformations of the samples are analyzed depending on the cyclic changes of their temperature.

关键词： thermal expansion frozen soil sand clay fiber-optic sensors hysteresis

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气体团簇离子束装置的设计及其在表面平坦化、自组装纳米结构中的应用

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物理学报 2020年第9期69卷 113-122页

作者：曾晓梅 vasiliy Pelenovich Rakhim Rakhimov 左文彬邢斌罗进宝张翔宇付德君武汉大学物理科学与技术学院武汉430072 武汉大学动力与机械学院武汉430072

根据超声膨胀原理,n(10-10^4)个气体原子可以绝热冷却后凝聚在一起形成团簇,经过离化后,形成带一个电荷量的团簇离子,比如Arn^+.当团簇离子与固体材料相互作用时,由于平均每个原子携带的能量(~eV)较低,仅作用于材料浅表面区域,因此,气... 详细信息

根据超声膨胀原理,n(10-10^4)个气体原子可以绝热冷却后凝聚在一起形成团簇,经过离化后,形成带一个电荷量的团簇离子,比如Arn^+.当团簇离子与固体材料相互作用时,由于平均每个原子携带的能量(~eV)较低,仅作用于材料浅表面区域,因此,气体团簇离子束是材料表面改性的优良选择.本文介绍了一台由武汉大学加速器实验室自主研制的气体团簇离子束装置,包括整体构造、工作原理及实验应用.中性团簇束由金属锥形喷嘴(F=65-135μm,q=14°)形成,平均尺寸为3000 atoms/cluster,经离化后,其离子束流达到了50μ***团簇离子因其反应活性较低,本文运用Ar团簇离子(平均尺寸为1000 atoms/cluster)进行了平坦化和自组装纳米结构的研究.单晶硅片经Ar团簇离子束处理后,均方根粗糙度由初始的1.92 nm降低到0.5 nm,同时观察到了束流的清洁效应.利用Ar团簇离子束的倾斜(30°-60°)轰击,在宽大平坦的单晶ZnO基片上形成了纳米波纹,而在ZnO纳米棒表面则形成了有序的纳米台阶,同时,利用二维功率谱密度函数分析了纳米结构在基片上的表面形貌和特征分布,并计算了纳米波纹的尺寸和数量.

关键词：气体团簇离子束表面平坦化自组装纳米结构功率谱密度函数

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窄禁带半导体的自由载流子吸收

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红外与毫米波学报 1991年第4期10卷 241-245页

作者： A.E.belyaev N.V.SHEVCHENKO Z.A.DEMIDENKO Institute of Semiconductors Academy of Sciences of the Ukrainian SSRInstitute of Semiconductors Academy of Sciences of the Ukrainian SSRInstitute of Physics Academy of Sciences of the Ukranian SSR Prospect Nauki 45 Kiev-28 252650 USSRProspect Nauki 45 Kiev-28 252650 USSRProspect Nauki 46 Kiev-28 252028 USSR

从理论和实验上研究了77K和300K温度下,本征型半导体InSb,Hg_(1-x)Cd_xTe,Hg_(1-x)Mn_xTe和高掺杂Hg_(1-x)Cd_xTe在2.5～50μm波段范围内的自由载流子吸收,结果表明:对于所研究的三种本征型样品,均是极性光学声子散射起主要作用,对于InS... 详细信息

从理论和实验上研究了77K和300K温度下,本征型半导体InSb,Hg_(1-x)Cd_xTe,Hg_(1-x)Mn_xTe和高掺杂Hg_(1-x)Cd_xTe在2.5～50μm波段范围内的自由载流子吸收,结果表明:对于所研究的三种本征型样品,均是极性光学声子散射起主要作用,对于InSb还应考虑声学声子和电离杂质散射。对有缺陷的Hg_(1-x)Mn_xTe样品,理论计算的自由载流子吸收系数与实验值不一致,表明存在附加的散射机制,对高掺杂Hg_(1-x)Cd_xTe的研究证实了这一假设。还讨论了非弹性电子-声子散射机制的起因,估算了特性参数。

关键词：窄禁带半导体自由载流子

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The REMO Ocean Data Assimilation System into HYCOM(RODAS_H):General Description and Preliminary Results

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Atmospheric and Oceanic Science Letters 2014年第5期7卷 464-470页

作者： Clemente Augusto Souza TANAJURA Alex Novaes SANTANA Davi MIGNAC Leonardo Nascimento LIMA Konstantin belyaev XIE Ji-Ping Physics Institute Federal University of Bahia (UFBA) Salvador 40170-280 Brazil Oceanographic Modeling and Observation Network (REMO) Center for Research in Geophysics and Geology Federal University of Bahia (UFBA) Salvador 40170-280 Brazil Ocean Sciences Department University of California Santa Cruz (UCSC) USA Graduate Program in Geophysics Federal University of Bahia (UFBA) Salvador Brazil Shirshov Institute of Oceanology Russian Academy of Sciences (SHIRSHOV/RAS) Moscow Russia Institute of Atmospheric Physics(IAP) Chinese Academy of Sciences (CAS)

The first version of the Brazilian Oceano- graphic Modeling and Observation Network （REMO） ocean data assimilation system into the Hybrid Coordi- nate Ocean Model （HYCOM）（RODAS H） has recently been constructed for research and operational purposes. The system is based on a multivariate Ensemble Optimal Interpolation （EnOI） scheme and considers the high fre- quency variability of the model error co-variance matrix. The EnOl can assimilate sea surface temperature （SST）, satellite along-track and gridded sea level anomalies （SLA）, and vertical profiles of temperature （T） and salinity （S） from Argo. The first observing system experiment was carried out over the Atlantic Ocean （78°S-50°N, 100°W-20°E） with HYCOM forced with atmospheric reanalysis from 1 January to 30 June 2010. Five integra- tions were performed, including the control run without assimilation. In the other four, different observations were assimilated： SST only （A SST）; Argo T-S profiles only （AArgo）; along-track SLA only （A_SLA）; and all data employed in the previous runs （A_All）. The A_SST, A_Argo, and A_SLA runs were very effective in improv- ing the representation of the assimilated variables, but they had relatively little impact on the variables that were not assimilated. In particular, only the assimilation of S was able to reduce the deviation of S with respect to ob- servations. Overall, the A_All run produced a good analy- sis by reducing the deviation of SST, T, and S with respect to the control run by 39%, 18%, and 30%, respectively, and by increasing the correlation of SLA by 81%.

关键词： ocean data assimilation ensemble optimalinterpolation observing system experiment HYCOM Atlantic Ocean

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离子剂量比在气体团簇多级能量平坦化模式中的作用

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物理学报 2021年第22期70卷 48-54页

作者：罗进宝 vasiliy Pelenovich 曾晓梅郝中华张翔宇左文彬付德君武汉大学物理科学与技术学院武汉430072 武汉大学动力与机械学院武汉430072

本研究提出采用两种不同的离子剂量比的气体团簇离子束多级能量模式来改善n-Si(100)单晶片的创伤表面.模式一采用低剂量的高能量团簇和高剂量的低能量团簇组合,模式二则采用高剂量的高能量团簇和低剂量的低能量团簇组合.结果证明,模式... 详细信息

本研究提出采用两种不同的离子剂量比的气体团簇离子束多级能量模式来改善n-Si(100)单晶片的创伤表面.模式一采用低剂量的高能量团簇和高剂量的低能量团簇组合,模式二则采用高剂量的高能量团簇和低剂量的低能量团簇组合.结果证明,模式一的平坦化效果优于模式二,两者的均方根粗糙度分别为0.62 nm和1.02 nm.本文在研究多级能量模式平坦化前,先做了单一能量团簇轰击带有机械损伤的Si片实验,来验证创伤去除、离子损伤程度与团簇能量的关系.结果证明,当用15 kV高压加速团簇离子时,划痕去除效率最高,最终表面划痕很浅,但粗糙度下降不明显;当用8 kV,5 kV低压加速团簇离子时,样品表面变得细腻,遗留的离子损伤最轻.然后将多级能量模式一与单一能量团簇轰击靶材进行对比,结果表明,与单一15 keV的高能团簇处理相比,多级能量模式可以获得更为平坦的靶材表面;与单一5 keV的低能团簇处理相比,多级能量模式可以更好的去除划痕等创伤.多级能量模式一将高、低能团簇优点集中起来,从而达到最佳的平坦化效果.

关键词：气体团簇离子束表面平坦化离子剂量比多级能量模式表面粗糙度

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Electro Energetic Technological Control in Eastern Siberia Railway

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Journal of Energy and Power Engineering 2012年第2期6卷 293-298页

作者： Zakaryukin vasiliy Panteleymonovich Kryukov Andrew Vasilievich Abramov Nikita Andreevich Irkutsk State Transport University Irkutsk 664074 Russia

By system analysis and imitating modeling authors show the most effective modern techniques for railway electric systems control. Modem measure technologies PMU-WAMS and smart grid allow to solve real time tasks of centralizing control of railway electric systems. Quantity characteristics of control effectiveness are determined. According to computer modeling the situation approach is available for practical tasks of railway electric system control.

关键词： Electric supplying railway electric traction technological control.

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