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Design of Gas Sensors Circuits with in-System Programmable Ddevices

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稀有金属材料与工程 2006年第A3期35卷 146-147页

作者： Duren Liu jin Liu Zhichun Ren Xidian University Xi＇an 710071 China

In-system programmable devices are products that combined modern electronic techniques and semiconductor *** are indispensable devices in designing modern circuits and *** paper presents two practical circuits designed with programmable devices and its design *** introducing programmable devices into gas sensor circuits,we can further improve system reliability,stability,sensitivity and integration degree,and enhance flexibility of system design.

关键词： in-system programmable device gas sensor music warning circuit gas sensor measurement circuit

Origin and accumulation of high-maturity oil and gas in deep parts of the Baxian Depression, Bohai Bay Basin, China

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Petroleum Science 2013年第3期10卷 303-313页

作者： Zhao Xianzheng jin Qiang jin Fengming Ma Peng Wang Quan Wang jing Ren Chunling Xi Qiuling School of Geosciences China University of Petroleum Huabei Oilfield Company of PetroChina

Great quantities of light oil and gas are produced from deep buried hill reservoirs at depths of 5,641 m to 6,027 m and 190 ℃ to 201 ℃ in the Niudong-1 Well, representing the deepest and hottest commercial hydrocarbons discovered in the Bohai Bay Basin in eastern China. This discovery suggests favorable exploration prospects for the deep parts of the basin. However, the discovery raises questions regarding the genesis and accumulation of hydrocarbons in deep reservoirs. Based on the geochemical features of the hydrocarbons and characteristics of the source rocks as well as thermal simulation experiments of hydrocarbon generation, we conclude that the oil and gas were generated from the highly mature Sha-4 Member （Es4） source rocks instead of thermal cracking of crude oils in earlier accumulations. The source kitchen with abnormal pressures and karsted carbonate reservoirs control the formation of high-maturity hydrocarbon accumulations in the buried hills （i.e., Niudong-1） in conjunction with several structural-lithologic traps in the ES4 reservoirs since the deposition of the upper Minghuazhen Formation. This means the oil and gas exploration potential in the deep parts of the Baxian Depression is probably high.

关键词： High mature oil and gas origin accumulation deep part of Baxian Depression

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上海“文革”时期的蔬菜供应

安徽史学 2009年第2期 48-54页

作者：金大陆上海社会科学院历史研究所上海200235

城市蔬菜供应关联"民众─生活"和"社会─管理"两条波动线,难怪通过"文革"夺权的造反派,在蔬菜供应淡季时,也得派人勘踏田头,各方调运,促进上市。"文革"前,上海以三角地菜场为服务典范;"文革"中,上海以长寿支路菜场为服务样板。前后"优... 详细信息

城市蔬菜供应关联"民众─生活"和"社会─管理"两条波动线,难怪通过"文革"夺权的造反派,在蔬菜供应淡季时,也得派人勘踏田头,各方调运,促进上市。"文革"前,上海以三角地菜场为服务典范;"文革"中,上海以长寿支路菜场为服务样板。前后"优质服务"的套路、特色并无二致,支持系统的政治符号和政治指向,却因强调为"政治路线服务"而不一样。同时,蔬菜供应的背后,还存在着相当严重的贪污盗窃活动。

关键词：城市蔬菜供应 “优质服务”与“政治路线” 贪污盗窃

Use of dry yeast cells as a cheap nitrogen source for lactic acid production by thermophilic Bacillus coagulans WCPIO-4

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Frontiers of Chemical Science and Engineering 2015年第3期9卷 381-385页

作者： Kim Yng Ooi jin Chuan Wu Institute of Chemical and Engineering Sciences A'STAR 1 Pesek Road Jurong Island 627833 Singapore

Dry yeast cells （DYC） were used as a cheap nitrogen source to replace expensive yeast extract （YE） for L-lactic acid production by thermophilic Bacillus coagulans. Cassava starch （200 g. L1） was converted to L-lactic acid by simultaneous saccharification and fermentation using Bacillus coagulans WCP10-4 at 50℃ in the presence of 20g·L-1 of DYC, giving 148.1 g·L-1 of L- lactic acid at 27 h with a productivity of 5.5 g·L-1·h-1 and a yield of 92%. In contrast, 154.4 g·L-1 of lactic acid was produced at 24 h with a productivity of 6.4 g·L-1. hl and a yield of 96% when equal amount of YE was used under the same conditions. Use of pre-autolyzed DYC at 50℃ for overnight slightly improved the lactic acid titer （154.5g·L-1） and productivity （7.7g·L-1·h-1） but gave the same yield （96%）.

关键词： coagulans L-lactic acid thermophilic strain Bacillus dry yeast cells autolysis fermentation

Hom-derivations in C^*-ternary Algebras

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Acta Mathematica Sinica,English Series 2020年第9期36卷 1025-1038页

作者： Yuan Feng jin Choonkil PARK Michael ThRASSIAS Department of Mathematics Yanbian UniversityYanji 133001P.R.China Research Institute for Natural Sciences Hanyang UniversitySeoul 04763Republic of Korea Institute of Mathematics University of ZurichCH-8057ZurichSwitzerland

In this paper,we introduce and solve the following additive(ρ1,ρ2)-functional inequalities‖f(x+y+z)-f(x)-f(y)-f(z)‖≤‖ρ1(f(x+z)-f(x)-f(z))‖+‖ρ2(f(y+z)-f(y)-f(z))‖,whereρ1 andρ2 are fixed nonzero complex numbers with|ρ1|+|ρ2|<*** the fixed point method and the direct method,we prove the Hyers–Ulam stability of the above additive(ρ1,ρ2)-functional inequality in complex Banach ***,we prove the Hyers–Ulam stability of hom-derivations in C^*-ternary algebras.

关键词： Hyers–Ulam stability additive (ρ1 ρ2)-functional inequality fixed point method direct method hom-derivation on C^*-ternary algebra

Simulation of the Diffusion in Laser Induced Chain Reaction of 1,2-Dichloroethane

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Chinese Physics Letters 1991年第2期8卷 106-109页

作者： KANG jin WANG Lixin XU Jiren Institute of Physics Academia SinicaBeijing 100080

A system of diffusion equations of laser induced chain reaction of 1,2-dichloroethane to form vinyl chloride is *** means of finite differential method,a temporal radial concentration distribution for the product viny... 详细信息

关键词： ethane 1,2 vinyl

One-pot Three-component Mannich Reaction Catalyzed by 2-Hydroxylpyridine

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Chemical Research in Chinese Universities 2013年第4期29卷 710-713页

作者： jin Li-li LEI Yun-tao College of Sciences China Pharmaceutical University Nanjing 210009 P. R. China

An effcient synthetic protocol for the β-amino carbonyl compounds was developed via one-pot three- component Mannich reaction of aromatic aldehydes, aromatic amines and cyclohexanone catalyzed by 2-hydroxylpy- ridine under mild reaction conditions, β-Amino carbonyl compounds were obtained in moderate to good yields and rea- sonable diastereoselectivities. The effects of different solvents, catalyst amounts and the scope of different substrates on the Mannich reactions were investigated. The plausible reaction mechanism was also discussed.

关键词： 2-Hydroxylpyridine Catalyze Mannich reaction fl-Amino carbonyl compound

Synergistic effect of phosphorus doping and MoS_(2) co-catalysts on g-C_(3)N_(4) photocatalysts for enhanced solar water splitting

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Journal of Materials Science & Technology 2023年第27期158卷 171-179页

作者： Xunfu Zhou Pai Wang Meng Li Minfu Wu Bei jin jin Luo Meifeng Chen Xiaoqin Zhou Yanning Zhang Xiaosong Zhou School of Chemistry and Chemical Engineering Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education InstitutesLingnan Normal UniversityZhanjiangGuangdong 524048China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731China Electrochemical NanoEnergy Group School of Chemical Engineering and Light Industry at Guangdong University of TechnologyGuangzhou 510006China Department of Food Science Foshan Polytechnic Foshan 528137China

Carbon nitride(g-C_(3)N_(4))is a promising metal-free and visible-light-responsive ***,its photocatalytic efficiency still suffers from high recombination rates of photoinduced charge carriers,slow kinetics of surface redox reactions,and relatively poor light ***,a non-noble metal photocatalyst of MoS_(2) nanodots anchored on P-doped g-C_(3)N_(4) via in situ photodeposition was *** the synergetic effect of the P-doping and MoS_(2) co-catalyst,the as-prepared P-doped g-C_(3)N_(4)/MoS_(2) catalyst has achieved efficient photocatalytic overall water splitting with a hydrogen evolution rate of 121.7μmol h−1 g−*** results and Density functional theory(DFT)simulations indicate that the enhanced photo-absorption capacity originates from the reduced band gaps by P ***,the MoS_(2) reduces the overpotential of the water oxidation process and improves hydrogen adsorption capability in the hydrogen evolution *** work can pave a new avenue to design and develop noble-metal-free water-splitting photocatalysts for future large-scale applications.

关键词： Synergistic effect Noble-metal-free photocatalyst P-doping MoS_(2)co-catalyst Water splitting g-C_(3)N_(4)

Uncertainty and universality in the power-law singularity as a precursor of catastrophic rupture

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Science China(Physics,Mechanics & Astronomy) 2012年第6期55卷 1098-1102页

作者： jin Yuan XIA MengFen WANG HaiYing State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China Graduate University of Chinese Academy of Sciences Beijing 100049China

The prediction of catastrophic rupture of heterogeneous brittle material has been investigated by researchers in the *** this work,the acoustic emission generated by marble samples under compression was analyzed to verify a power law singularity of index 1/2 as a catastrophe *** is found that prior to catastrophe,the variation of the system response to the controlling parameter follows a power law of negative index,which proves the power law singularity as a common precursor of ***,the power indexes vary with variables and *** uncertainty reflects sample specificity of an evolution induced catastrophe (EIC) process.

关键词： uncertainty universality power-law singularity catastrophic rupture acoustic emission