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Evaluation of Carbon and Electron Flow in Lactobacillus brevis as a Potential Host for Heterologous 1-Butanol Biosynthesis

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Advances in Microbiology 2013年第5期3卷 450-461页

作者： Oksana v.Berezina German Jurgens Natalia v.Zakharova Rustem S.Shakulov Sergey v.Yarotsky Tom B.Granstrom State Research Institute of Genetics and Selection of Industrial Microorganisms MoscowRussian Federation Department of Biotechnology and Chemical Technology School of Chemical TechnologyAalto UniversityEspooFinland

Heterofermentative lactic acid bacterium Lactobacillus brevis may be considered as a promising host for heterologous butanol synthesis because of tolerance to butanol and ability to ferment pentose and hexose sugars from wood hydrolysates that are cheap and renewable carbohydrate source. Carbon and electron flow was evaluated in two L. brevis strains in order to assess metabolic potential of these bacteria for heterologous butanol synthesis. Conditions required for generation of acetyl-CoA and NADH which are necessary for butanol biosynthesis have been determined. Key enzymes controlling direction of metabolic fluxes in L. brevis in various redox conditions were defined. In anaerobic glucose fermentation, the carbon flow through acetyl-CoA is regulated by aldehyde dehydrogenase ALDH possessing low affinity to NADH and activity (KmNADH= 200 μM, vmax= 0.03 U/mg of total cell protein). Aerobically, the NADH-oxidase NOX (KmNADH= 25 μM, vmax = 1.7 U/mg) efficiently competes with ALDH for NADH that results in formation of acetate instead of acetyl-CoA. In general, external electron acceptors (oxygen, fructose) and pentoses decrease NADH availability for native ethanol and recombinant butanol enzymes and therefore reduce carbon flux through acetyl-CoA. Pyruvate metabolism was studied in order to reveal redirection possibilities of competitive carbon fluxes towards butanol synthesis. The study provides a basis for the rational development of L. brevis strains producing butanol from wood hydrolysate.

关键词： Lactobacillus brevis Metabolism Carbon and Electron Flow Heterologous Butanol Synthesis SO2-Ethanol-Water Hydrolysate

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Simulation of Waves Processes in Dusty Emission of volcano

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Open Journal of Geology 2011年第1期1卷 10-16页

作者： v.v. Grimalsky M.A. Cruz Chavez S.v. Koshevaya A. Kotsarenko M. Hayakawa R. Pérez Enriquez Autonomous University of Morelos (UAEM) Cuernavaca ZP 62209 Mor. Mexico

A general method of simulation of processes in dusty based on special programs is presented here. It is pos-sible to prepare the modeling of the dusty in volcano like the dust sound waveguides. Dusty is in state of the plasma .Waveguides are formed by the distribution of dusty particles with various masses m = m(x) in trans-verse coordinate. The dust sound waves propagate along the longitudinal z-direction. In the case of contact of dusty plasma with a semi-infinite dielectric, there exists the dust acoustic mode that possesses the negative group velocity (backward wave) in the specified interval of wave numbers. For analysis it is necessary to use the special numerical methods of calculation of the equations with boundary conditions. Simulation of ion sound wave propagation shows a new dispersion between frequency and wave vector. In some region of pa-rameters of dusty the negative dispersion of wave takes place. This means that the phase and group velocities of wave are opposite (negative dispersion). This phenomenon takes place, when the mass of dust particles has the maximum in the center of the waveguide. The negative dispersion caused the instability in dusty, which open the possibility to create a new phenomenon in dusty including the high temperature and the flame.

关键词： Dusty Plasma Dispersion Negative Group velocity

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Formation of self-assembled nanodomain structures in single crystals of uniaxial ferroelectrics lithium niobate, lithium tantalate and strontium–barium niobate

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Journal of Advanced Dielectrics 2014年第1期4卷 87-94页

作者： v.Ya.Shur v.A.Shikhova P.S.Zelenovskiy D.v.Pelegov L.I.Ivleva J.Dec Ferroelectric Laboratory Institute of Natural Sciences Ural Federal University51 Lenin Ave.Ekaterinburg 620000Russia General Physics Institute of the Russian Academy of Sciences 38 vavilov Str. Moscow 119991Russia Institute of Materials Science University of Silesia4 Uniwersytecka Str.Katowice PL-40-007Poland

The formation and evolution of the self-assembled nanodomain structures during polarization reversal have been comparatively analyzed in single crystals of various uniaxial ferroelectrics:LiNbO_(3)(LN),LiTaO_(3)(LT)and Sr_(x)Ba_(1-x)Nb_(2)O_(6)(SBN).Several experimental methods have been used for visualization of the micro-and nanodomain *** static domain images have been obtained by optical microscopy and piezoresponse force *** Raman confocal microscopy allowed us to obtain the domain images in the *** equilibrium slow switching with effective screening resulted in growth of polygon-shaped microdomains:hexagons in LN,triangles in LT and squares in SBN,which corresponds to crystal *** in nonequilibrium conditions(noneffective screening of depolarization field)brings to appearance of similar nanodomain structures in all studied crystals as a result of different processes:(1)formation of nanodomain ensembles,(2)discrete switching,(3)incomplete merging and(4)spontaneous backswitching.

关键词： Nanodomain structures self-assembling lithium niobate lithium tantalate strontium-barium niobate.

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自主机器人使能技术在制造业中的应用（英文）

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Transactions of Nanjing University of Aeronautics and Astronautics 2024年第4期 403-431页

作者： ERD?S Gábor ABAI Kristóf BEREGI Richárd CSEMPESZ János CSERTEG Tamás GODó Gábor HAJóS Mátyás HáY Borbála HORváTH Dániel HORváTH Gergely JUNIKI ádám KEMéNY Zsolt KOváCS András NACSA János PANITI Imre PEDONE Gianfranco TAKáCS Emma TIPARY Bence ZAHORáN László váNCZA József 匈牙利研究网络计算机科学与控制研究所布达佩斯经济与技术大学制造科学与技术系 EPIC非盈利创新实验室厄特沃什·罗兰大学

自主制造系统的研究既受益于信息物理融合系统这一新技术的推动，也响应工业实际需求的号召。目前，先进的传感器技术、数字孪生、人工智能和新型通信技术可以支持半结构化工业环境中的自主操作，可实现对生产过程的实时监控、情况识别... 详细信息

自主制造系统的研究既受益于信息物理融合系统这一新技术的推动，也响应工业实际需求的号召。目前，先进的传感器技术、数字孪生、人工智能和新型通信技术可以支持半结构化工业环境中的自主操作，可实现对生产过程的实时监控、情况识别和预测、自动和自适应（重新）规划、团队合作，以及通过学习提高性能。本文总结了实现自主工业机器人技术的主要需求，提出了实现此类系统的通用工作流程，并介绍了HUN-REN SZTAKI最近在装配、焊接、打磨、拾取和放置以及机械加工等多个应用领域的广泛实践。这些解决方案的共同点是以通用的数字孪生概念为核心。最后，本文提出实现工业自主机器人解决方案的一般建议，并讨论了未来要研究的一些开放性问题。

关键词：工业机器人自动化数字孪生使能技术

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测定电弧炉中燃烧器喷尖“距废料距离”的SERAFIN传感器

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冶金分析 2011年第9期31卷 30-33页

作者： Mathy Monfort G vanderheyden B Tusset v 可持续生产和上游工艺部冶金研究中心列日比利时先进传感器部冶金研究中心列日比利时先进解决方案和传感器部冶金研究中心列日比利时

开发了用以测定电弧炉(EAF)中燃烧器喷尖"距废料距离"的SERAFIN传感器,同时讨论了其具有监测熔化废钢的工艺优点。详细描述了传感器测量原理和光学测量头的设计特点。SERAFIN传感器是一种适用于环形燃烧器、组合燃烧器以及氧气喷枪内部... 详细信息

开发了用以测定电弧炉(EAF)中燃烧器喷尖"距废料距离"的SERAFIN传感器,同时讨论了其具有监测熔化废钢的工艺优点。详细描述了传感器测量原理和光学测量头的设计特点。SERAFIN传感器是一种适用于环形燃烧器、组合燃烧器以及氧气喷枪内部的在线测量"距废料距离"的测量技术,工业试验表明运用此传感器可以监测每个注射器前面废料的熔化情况,进而优化其操作,并可在发生损坏前检测逆吹情况。仪表盘过热比较结果表明其可以用于逆吹倾向的预测。

关键词：电弧炉燃烧器废料 SERAFIN传感器

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基于改进深度森林的滚动轴承剩余寿命预测方法

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中国电机工程学报 2020年第15期40卷 5032-5042页

作者：王玉静王诗达康守强王庆岩 v.I.MIKULOvICH 哈尔滨理工大学电气与电子工程学院黑龙江省哈尔滨市150080 白俄罗斯国立大学白俄罗斯明斯克220030

针对现有人工智能方法在滚动轴承剩余寿命预测中存在精度差、运算效率低的问题,提出一种基于深层迭代特征(deep iterative features,DIF)级联CatBoost(cascade catboost,CasCatBoost)的滚动轴承剩余寿命预测新方法。该方法是一种改进的... 详细信息

针对现有人工智能方法在滚动轴承剩余寿命预测中存在精度差、运算效率低的问题,提出一种基于深层迭代特征(deep iterative features,DIF)级联CatBoost(cascade catboost,CasCatBoost)的滚动轴承剩余寿命预测新方法。该方法是一种改进的新型深度森林算法,首先对由快速傅里叶变换得到的滚动轴承频域信号进行迭代计算,得到迭代特征。为了减小内存的消耗,将深度森林中的多粒度扫描结构替换为卷积神经网络,提取迭代特征的深层特征,并构建性能退化特征集。然后对可实现GPU并行加速的单一CatBoost模型进行集成,引入决定系数R2构建CasCatBoost结构以提高模型的表征能力,选取模型最后一个级联层的平均寿命百分比p表示输出。最后运用一次函数对p进行拟合,预测出轴承的剩余寿命。利用PHM2012数据库对滚动轴承剩余寿命进行预测,所提方法的预测平均误差为10.57%、平均得分为0.426。

关键词：滚动轴承卷积神经网络深层迭代特征深度森林剩余寿命预测

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在线监测烧结度的Supermagnag传感器

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冶金分析 2011年第12期31卷 26-28页

作者： Mathy Monfort G vanderheyden B Tusset v 冶金研究中心可持续生产和上游工艺部比利时列日冶金研究中心先进传感器部比利时列日冶金研究中心先进解决方案和传感器部比利时列日

介绍了用于在线监测烧结物磁特性的Supermagnag传感器。Supermagnag传感器通过测量磁导率连续监测烧结块的烧结程度,与Permagnag传感器相比,其响应时间显著缩短(SIFA2为68min)。此传感器不仅可用于反应过程控制,而且可用于警报信号,以... 详细信息

介绍了用于在线监测烧结物磁特性的Supermagnag传感器。Supermagnag传感器通过测量磁导率连续监测烧结块的烧结程度,与Permagnag传感器相比,其响应时间显著缩短(SIFA2为68min)。此传感器不仅可用于反应过程控制,而且可用于警报信号,以检测反常的装填条件、点火失败或者维修需要。

关键词：在线传感器烧结物磁导率响应时间

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Numerical Simulation of Interaction between Fluid and vapor Structures in Multiphase Flow around Hydrofoil

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Journal of Applied Mathematics and Physics 2018年第8期6卷 1614-1624页

作者： Milan Sedlar Jiri Soukal Martin Komarek Alexander v. volkov Artem v. Ryzhenkov Centre of Hydraulic Research Lutin Czech Republic Moscow Power Engineering Institute Moscow Russia

This work deals with the numerical simulation of interaction of fluid and vapor structures on NACA 2412 hydrofoil during the partial cavitation oscillation. This interaction is supposed to be the most important reason for the cavity shedding when, in a certain range of the cavitation numbers, some “resonance” effect can be reached. The incidence angle is 8? and the Reynolds number is 1.56 × 106. The hydrofoil with the span/chord ratio of 1.25 corresponds to the experiments carried out in the cavitation tunnel. The Detached Eddy Simulation (DES) is used on full 3D geometry of the straight NACA 2412 hydrofoil to capture the strong influence of side-wall effects. Real properties of water including estimated content of undissolved air are con-sidered to affect the compressibility of the mixture and its speed of sound. The link between strong pressure pulses during the cavity cycles and the interaction of fluid and vapor structures is discussed in detail.

关键词： Cavitation Fluid Structures NACA 2412 Partial Cavitation Oscillation DES 3D Effects Undissolved Air

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Sugar intake from sweetened beverages and diabetes:A narrative review

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World Journal of Diabetes 2021年第9期12卷 1530-1538页

作者： Tung-Sung Tseng Wei-Ting Lin Gabrielle v Gonzalez Yu-Hsiang Kao Lei-Shih Chen Hui-Yi Lin Behavioral and Community Health Sciences School of Public HealthLouisiana State University Health Sciences CenterNew OrleansLA 70112United States Department of Global Community Health and Behavioral Sciences School of Public Health&Tropical MedicineTulane UniversityNew OrleansLA 70112United States Department of Health and Kinesiology Texas A&M UniversityCollege StationTX 77843United States Biostatistics Program School of Public HealthLouisiana State University Health Sciences CenterNew OrleansLA 70112United States

Type 2 diabetes mellitus(T2DM)is one of the fastest growing public health concerns around the ***-sweetened beverage(SSB)consumption has been proven to be associated with adverse health consequences in the diabetic *** SSB consumption,body weight control,healthy diets,and increased physical activity have been suggested as strategies to improve diabetes prevention and *** literature review provides an overview of:(1)The association between SSB consumption and the risk of T2DM;(2)Types of SSB consumption and T2DM;(3)The effect of obesity and inflammation on the association between SSB consum-ption and risk of T2DM;and(4)SSB consumption in T2DM *** is still work to be done to determine how SSB consumption is related to T2DM,but the current research on identifying the association between SSB consumption and T2DM is promising,with the most promising studies confirming the connection between SSBs,T2DM risk,and diabetes *** studies should explore more effective SSB related diabetes prevention and management interventions.

关键词： Sugar-sweetened beverages Type 2 diabetes mellitus Inflammation Obesity Diabetes management

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职场不逃跑

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作者：小v

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