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Low-Power Digital Circuit Design with Triple-Threshold Voltage

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journal of Energy and Power Engineering 2010年第9期4卷 56-59页

作者： j.b. Kim Department of Electronics Engineering Kangwon National University Chuncheon Kangwon 200-701 Korea

Triple-threshold CMOS technique provides the transistors that have low-, normal-, and high-threshold voltage. This paper describes a low-power carry look-ahead adder with triple-threshold CMOS technique. While the low-threshold voltage transistors are used to reduce the propagation delay time in the critical path, the high-threshold voltage transistors are used to reduce the power consumption in the shortest path. Comparing with the conventional CMOS circuit, the circuit is achieved to reduce the power consumption by 14.71% and the power-delay-product by 16.11%. This circuit is designed with Samsung 0.35 um CMOS process. The validity and effectiveness are verified through the HSPICE simulation.

关键词： Low-power circuit triple-threshold CMOS circuit carry look-ahead adder very large scale integrated circuit.

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现代世界中的物理学

THE COUPLED FEM ANALYSIS OF THE TRANSIENT TEMPERATURE FIELD DURING INERTIA FRICTION WELDING OF GH4169 ALLOY

1988年

作者：马龙(Marion j.b.)

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Acta Metallurgica Sinica(English Letters) 2007年第4期20卷 301-306页

作者： L.W. Zhang j.b. Pei Q.Z. Zhang C.D. Liu W.H. Zhu S. Qu j.H. Wang The State Key Laboratory for Materials Modification by Laser Ion and Electron Beams Dalian University of Technology Dalian 116023 China School of Materials Science and Engineering Dalian University of Technology Dalian 116023 China Shenyang Li Ming Aero-Engine Group Corporation Shenyang 110043 China

The inertia friction welding process is a non-linear process because of the interaction between the temperature field and the material properties as well as the friction force. A thermo-mechanical coupled finite element model is established to simulate the temperature field of this process. The transient temperature distribution during the inertia friction welding process of two similar workpieces of GH4169 alloy is calculated. The region of the circular cross-section of the workpiece is divided into a number of four-nodded isoparametric elements. In this model, the temperature dependent thermal properties, time dependent heat inputs, contact condition of welding interface, and deformation of the flash were considered. At the same time, the convection and radiation heat losses at the surface of the workpieces were also considered. A temperature data acquisition system was developed. The temperature at some position near the welding interface was measured using this system. The calculated temperature agrees well with the experimental data. The deformation of the flash and the factor affecting the temperature distribution at the welding interface are also discussed.

关键词： inertia friction welding temperature field numerical simulation finite element method

Small extrachromosomal circular DNA in amyotrophic lateral sclerosis matter

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Neural Regeneration Research 2025年第5期20卷 1411-1413页

作者： Marcos j.Arauzo-bravo Daniela Gerovska Matthias Schwab Alexandra Kretz Computational biology and Systems biomedicine Biodonostia Health Research InstituteSan SebastianSpain basque Foundation for Science IKERBASQUEBilbaoSpainMax Planck Institute for Molecular BiomedicineComputational Biology and Bioinformatics GroupMünsterNorth Rhine-WestphaliaGermany Department of Cell biology and Histology Faculty of Medicine and NursingUniversity of Basque Country(UPV/EHU)LeioaSpain Department of Neurology Jena University HospitalJenaThuringiaGermany

Comprehensive studies identify motor neuron spectrum disorders including amyotrophic lateral sclerosis(ALS)as globally rising fatal disorders with the highest prevalence in aging populations,influenced by ethnicity and ancestry(GbD 2016 Motor Neuron Disease Colla borators,2018).While~10% of diagnoses involve a family history(fALS),most cases are considered sporadic(sALS).However,population-based studies suggest that even cases without a common index mutation impart heritability(Ryan et al.,2019),indicating a crucial role of rare and as yet unknown genetic denominators.

关键词： amyotrophic sclerosis

噻吩多烯基噻吩酮系列化合物的气相紫外光电子能谱研究

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化学学报 1993年第10期51卷 955-959页

作者：王殿勋郑世钧孟令鹏徐广智 Peel j.b. 中国科学院化学研究所北京100080 澳大利亚拉卓布大学化学系

本文提供了噻吩多烯基噻吩酮系列化合物[1,n_1=0,n_2=0;n_1=1,n_2=0;n_1=2,n_2=0;n_1=1,n_2=1]的气相HeI光电子能谱(UPS),并进行了每个研究分子的MNDO量子化学计算。表明乙烯基基团的数目与其分子的HOMO实验电离能(I_p)呈线性递降关系。... 详细信息

本文提供了噻吩多烯基噻吩酮系列化合物[1,n_1=0,n_2=0;n_1=1,n_2=0;n_1=2,n_2=0;n_1=1,n_2=1]的气相HeI光电子能谱(UPS),并进行了每个研究分子的MNDO量子化学计算。表明乙烯基基团的数目与其分子的HOMO实验电离能(I_p)呈线性递降关系。MNDO计算结果不但很好地指认了每个研究分子UPS谱的归属,而且从分子轨道特性上提供了该类化合物分子为三岔共轭体系的理论基础。

关键词：气相UPS 噻吩多烯基噻吩酮

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肿瘤学

Mechanisms of High Coercivity in Ni/NiO Composite Films by Post Annealing

1988年

作者：（美）j.b.布洛克

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材料科学与工程学报 2007年第6期25卷 858-860页

作者： j.b. Yi j. Ding Mansoor bin Abdul jalil b.H. Liu S. Thongmee j.H. Yin Z.L. Zhao Department of Materials Science and Engineering National University of Singapore 119260 Singapore Department of Electrical ＆ Computer Engineering National University of Singapore 119260 Singapore

A coercivity as large as 2.4 kOe has been achieved in the Ni/NiO composite film after an annealing under a magnetic field of 10 kOe and an O_2 partial pressure of 0.001 *** coercivity was attributed to the strong exchange coupling of Ni and *** grain size of Ni and NiO was observed after the *** enhanced coercivity is probably associated with the domain wall pinning by local energy minima,the distribution of Ni and NiO,and the domain structure in the interface of Ni/NiO generated under the presence of the magnetic field during the post-annealing.

关键词：矫顽性镍氧化镍复合薄膜焊后退火交换耦合

Maximizing biomass utilization: An integrated strategy for coproducing multiple chemicals

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journal of Energy Chemistry 2025年第1期100卷 180-191页

作者： byeongchan Ahn Sua jo jonggeol Na j.jay Liu Young-ju Kim Wangyun Won Department of Chemical and biological Engineering Korea University Department of Chemical Engineering (Integrated process) Kyung Hee University Department of Chemical Engineering and Materials Science Ewha Womans University Department of Chemical Engineering Pukyong National University Resources Engineering Plant Research Department Korea Institute of Geoscience and Mineral Resources

Lignocellulosic biomass is one of the viable solutions to alleviate the global warming. However, the limited utilization of biomass majorly focused on cellulose and hemicellulose restricts the economic and environmental feasibilities. To cope with this issue, we proposed an integrated process of co-producing 1,6-hexanediol（1,6-HDO） with tetrahydrofuran and adipic acid from biomass, referred to as Strategy A. To compare the impacts of lignin upgrading and feedstock, Strategy b, which co-produces tetrahydrofuran alone, and Strategy C, which is the traditional route to produce 1,6-HDO from fossil fuels, were used. Heat networks are also designed to reduce operating costs and indirect carbon emissions due to energy consumption, saving 87% and 83% of the heat and cooling requirements, respectively, in Strategy A. The market competitiveness of Strategy A was evaluated by determining the minimum selling price through techno-economic analysis, and sustainability was thoroughly investigated by quantifying the environmental impacts through both midpoint and endpoint life-cycle assessments（LCAs）.Strategy A was found to be the most favorable both economically（USRDSCHARDOLLAR3,402/ton） and environmentally（-26.9 kg CO2eq.）. This indicates that lignin valorization is not only economically but also environmentally preferred. Finally, changes in economic and environmental feasibilities depending on economic, process, and environmental parameters were investigated using sensitivity and uncertainty analyses. The results of these analyses provide valuable insight into bio-based chemical production.

关键词： Carbon capture and utilization

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《拉美危机面临的经济政策选择》

拉丁美洲研究 1993年第4期 61-62页

作者： j.b.安德森人可

拉美决策者长期以来面临着以下争论:1.通货膨胀政策。拉美的通货膨胀率始终高于世界其他地区。在制定反通货膨胀政策的过程中,决策者面临着两种选择:正统的金融控制或非正统的休克疗法。有效的政策应该是合二为一。2.财政政策。这方面... 详细信息

拉美决策者长期以来面临着以下争论:1.通货膨胀政策。拉美的通货膨胀率始终高于世界其他地区。在制定反通货膨胀政策的过程中,决策者面临着两种选择:正统的金融控制或非正统的休克疗法。有效的政策应该是合二为一。2.财政政策。这方面争论的核心是:利率应保持在什么水平上。换言之,实际利率(即名义利率减去通货膨胀率)应该是正还是负?低利率能鼓励投资,从而促进经济增长;

关键词：通货膨胀率经济利率价格扭曲外向决策者决策个体投资者