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Emitter-couple logic circuit design based on the threshold-arithmetic algebraic system

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第10期14卷 808-814页

作者： Mao-qun yao Li-bin ZHANG Hangzhou Institute Service Engineering Hangzhou Normal University School of Information Science and Engineering Hangzhou Normal University

Based on the threshold-arithmetic algebraic system which has been proposed for current-mode circuit design,we propose a systematic methodology for emitter-couple logic(ECL)circuit *** to the traditional methodologies and the theory of differential current switches,the proposed methodology uses the HE map and the characteristics of the internal current signals of ECL circuits to determine the external voltage *** operations of the HE map are direct and simple,and the current signals are easy to add or subtract,which make this methodology more flexible,direct,and effective,and make it possible to design arbitrary binary and multi-valued logic *** example circuits are designed and simulated by HSPICE using 0.18μm TSMC *** results confirm the validity of the proposed methodology.

关键词： Threshold-arithmetic algebraic system HE map ECL circuit Current-mode circuits

Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110)

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Chinese Journal of Chemical Physics 2015年第4期28卷 -页

作者： Zhi-qiang wang qun-qing Hao Chuan-yao Zhou Dong-xu Dai Xue-ming Yang State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Science Dalian 116023 China

Post-irradiation temperature-programmed desorption (TPD) has been used to study the photocatalyzed oxidation of methanol on TiO2(110) surface under the irradiation of 360, 380 and 400 nm light. The photocatalytic process initiated by ultraviolet light of different wavelength are similar. Methanol has been photocatalytically converted into formaldehyde, and the released hydrogen atoms transfer to the neighboring twofold coordinated oxygen to form bridging hydroxyls. The reaction rate, however, is strongly wavelength dependent. The reaction rate under 360 nm light irradiation is 4.8 times of that in the case of 400 nm exposure, consistent with a previous femtosecond time-resolved absorption measurement on TiO2which shows the faster charge carrier recombination in the near-band-gap than the over- band-gap excitation. So far, the underlying factors which govern the excitation wavelength dependence of photocatalytic activity of TiO2and other photocatalysts remain unclear, and future studies are needed to address this important issue.

关键词： Titanium dioxide Photocatalysis Excitation wavelength dependence Temperature-programmed desorption

Fabrication and characterization of Al_2O_3-metal composite coating on steel plate with nonpressure combustion synthesis

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Rare Metals 2013年第4期32卷 390-396页

作者： Chang-Hao wang Ze-Hua wang Ze-Hua Zhou Shao-qun Jiang Xiao-Feng Xue Jing-Jing yao College of Mechanics and Materials Hohai University School of Materials Science and Engineering Shanghai University

Al2O3-metal composite coatings with different reactants and diluents were fabricated on mild steel plate with nonpressure combustion synthesis process. The coat-ings were characterized by means of X-ray diffraction, scanning electron microscopy, and energy-dispersive spec-trometry, respectively. Thermal shock tests were carried out to determine the bond strength of the coating with the steel substrate. The results indicate that the coating is composed of α-A1203, α-（Fe-Cr） and Al2SiO5 as the main phases. It is found that the coating with the diluents of Al2O3-SiO2 and transition layer of Al2O3-Cr presents the *** hardness of 2270 HV0.2 and the lowest porosity of 3.93 %. Owing to a metallurgical bond of the coating-to-substrate, the coating exhibits a good thermal shock resistance.

关键词： Combustion synthesis Al2O3-metalcomposite coating Diluents Thermal shock resistance

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基于负化学电离技术的中链氯化石蜡检测研究

化学研究与应用 2024年第10期36卷 185-190页

作者：胡苹姚志国叶永乐陈政庄群黎明职业大学新材料与鞋服工程学院福建泉州362000 广州必维技术检测有限公司泉州分公司福建泉州362000

建立了测定塑料中的中链氯化石蜡含量的气相色谱-负化学电离质谱法。以乙酸乙酯为溶剂提取样品,提取温度为60℃,提取时间为45min,提取液滤膜过滤后,采用气相色谱-负化学电离质谱法进行定性和定量分析。结果表明,中链氯化石蜡在2~20mg·L... 详细信息

建立了测定塑料中的中链氯化石蜡含量的气相色谱-负化学电离质谱法。以乙酸乙酯为溶剂提取样品,提取温度为60℃,提取时间为45min,提取液滤膜过滤后,采用气相色谱-负化学电离质谱法进行定性和定量分析。结果表明,中链氯化石蜡在2~20mg·L^(-1)质量浓度范围内呈良好的线性关系,方法检出限为20.1mg·kg^(-1),在3个不同浓度加标水平下的平均回收率为102.3~115.2%相对标准偏差(RSD,n=6)为1.9~8.2%。该方法操作简捷、准确度高、精密度好,可用于塑料样品中MCCPs的检测。

关键词：气相色谱-负化学电离质谱法中链氯化石蜡塑料超声萃取

Multi-source information fused generative adversarial network model and data assimilation based history matching for reservoir with complex geologies

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Petroleum Science 2022年第2期19卷 707-719页

作者： Kai Zhang Hai-qun Yu Xiao-Peng Ma Jin-Ding Zhang Jian wang Chuan-Jin yao Yong-Fei Yang Hai Sun Jun yao Jian wang School of Petroleum Engineering China University of Petroleum(East China)QingdaoShandong266580China School of Science China University of Petroleum(East China)QingdaoShandong266580China Shengli Oil Field Exploration and Development Research Institute DongyingShandong266071China

For reservoirs with complex non-Gaussian geological characteristics,such as carbonate reservoirs or reservoirs with sedimentary facies distribution,it is difficult to implement history matching directly,especially for the ensemble-based data assimilation *** this paper,we propose a multi-source information fused generative adversarial network(MSIGAN)model,which is used for parameterization of the complex *** MSIGAN,various information such as facies distribution,microseismic,and inter-well connectivity,can be integrated to learn the geological *** two major generative models in deep learning,variational autoencoder(VAE)and generative adversarial network(GAN)are combined in our *** the proposed MSIGAN model is integrated into the ensemble smoother with multiple data assimilation(ESMDA)method to conduct history *** tested the proposed method on two reservoir models with fluvial *** experimental results show that the proposed MSIGAN model can effectively learn the complex geological features,which can promote the accuracy of history matching.

关键词： Multi-source information Automatic history matching Deep learning Data assimilation Generative model

Rice Mitochondrial Genes Are Transcribed by Multiple Promoters That Are Highly Diverged

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Journal of Integrative Plant Biology 2006年第12期48卷 1473-1477页

作者： qun-Yu Zhang yao-Guang Liu Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong College of Life Sciences South China Agricultural University Guangzhou 510642 China

Plant mitochondrial genes are often transcribed into complex sets of mRNA. To characterize the transcription initiation and promoter structure, the transcript termini of four mitochondrial genes, atpl, atp6, cob, rps7, in rice （Oryza sativa L.）, were determined by using a modified circularized RNA reverse transcription- polymerase chain reaction method. The results revealed that three genes （atp1, atp6, rps7） were transcribed from multiple initiation sites, indicating the presence of multiple promoters. Two transcription termination sites were detected in three genes （atp6, cob, rps7）, respectively. Analysis on the promoter architecture showed that the YRTA （Y=T or C, R=A or G） motifs that are widely present in the mitochondrlal promoters of other monocot and dicot plant species were detected only in two of the 12 analyzed promoters. Our data suggest that the promoter sequences in the rice mitochondrial genome are highly diverged in comparison to those in other plants, and the YRTA motif is not an essential element for the promoter activity.

关键词： mitochondrial gene promoter rice transcription initiation site transcription termination site

豆渣可溶性膳食纤维的提取及其制备可食用膜的研究

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中国调味品 2024年第4期49卷 91-95页

作者：张帅罗嘉瑶邹志群郑剑楠程昊肇庆学院食品与制药工程学院广东肇庆526061 广西科技大学生物与化学工程学院广西柳州545006 蔗糖产业省部共建协同创新中心南宁530004

豆渣是大豆加工的大宗副产物,富含膳食纤维。采用微波辅助酶解水提法提取豆渣可溶性膳食纤维(SDF),然后将其制成可食用膜。通过单因素试验和正交试验优化后的提取工艺参数为水料比25∶1(mL/g)、纤维素酶添加量3%、水解时间2 h,此条件下... 详细信息

豆渣是大豆加工的大宗副产物,富含膳食纤维。采用微波辅助酶解水提法提取豆渣可溶性膳食纤维(SDF),然后将其制成可食用膜。通过单因素试验和正交试验优化后的提取工艺参数为水料比25∶1(mL/g)、纤维素酶添加量3%、水解时间2 h,此条件下豆渣SDF提取率为18.65%。然后通过正交试验优化了用豆渣SDF制备可食用膜的配方为SDF 1.0 g、甘油4.5 g、CMC 1.0 g、海藻酸钠1.5 g。用最优配方制备的可食用膜具有良好的性能:膜厚度0.032 mm、透明度13.26%、溶解速度25 s/g、水蒸气透过系数0.61 g·mm/m^(2)·d·kPa、透油系数4.15 g·mm/m^(2)·d。该研究可为豆渣的深加工提供方法参考,所制备的可食用膜有望用于食品加工、包装行业。

关键词：豆渣可溶性膳食纤维可食用膜性能

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金沙江下游大坝建设对纵向连通性的影响研究

水生态学杂志 2024年第1期45卷 26-31页

作者：侯轶群邹曦陈小娟金瑶杨志刘宏高水利部中国科学院水工程生态研究所水利部水工程生态效应与生态修复重点实验室湖北武汉430079

金沙江下游生态系统的复杂多样性使其成为众多重点保护、濒危、珍稀和特有鱼类等集中分布的水生生物多样性中心,但近年来因高密度、高强度梯级水电站工程建设的阻隔影响而明显衰退。为采取有效措施恢复连通性以减缓不利影响,以流域为单... 详细信息

金沙江下游生态系统的复杂多样性使其成为众多重点保护、濒危、珍稀和特有鱼类等集中分布的水生生物多样性中心,但近年来因高密度、高强度梯级水电站工程建设的阻隔影响而明显衰退。为采取有效措施恢复连通性以减缓不利影响,以流域为单元,基于金沙江下游干流及支流DEM和水库、水电站建设数据,采用树状水系连通性指数方法分析流域内大坝所造成的阻隔影响,并对金沙江下游纵向连通性进行了评价。结果表明当大坝通过能力逐步提升,尤其是提升至0.7后,水系整体连通度呈显著增大趋势,连通性明显向好;金沙江下游水系连通性修复次序建议为,第一期:黑水河、西溪河、牛栏江;第二期:普渡河、西宁河、龙川江、鲹鱼河;远期:横江、普隆河、美姑河、以礼河、勐果河、小江。研究结果可为制定和实施流域鱼类洄游通道恢复工程及行动计划、促进水生生物保护提供基础支撑。

关键词：树状水系连通性指数DCI 修复次序金沙江下游

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某核电厂消防水管道腐蚀原因分析

全面腐蚀控制 2024年第7期38卷 192-194页

作者：姚旭京刘洪群中核核电运行管理有限公司浙江嘉兴314000 苏州热工研究院有限公司江苏苏州215004

某核电厂常规岛喷水灭火系统的消防喷淋管道频繁发生腐蚀穿孔。本文从消防喷淋管道的运行环境、定期试验规程、防腐措施、腐蚀形貌特点等方面开展了系统分析。结果表明,采用内外镀锌防腐措施的消防喷淋管道设计为内部通空气的预作用灭... 详细信息

某核电厂常规岛喷水灭火系统的消防喷淋管道频繁发生腐蚀穿孔。本文从消防喷淋管道的运行环境、定期试验规程、防腐措施、腐蚀形貌特点等方面开展了系统分析。结果表明,采用内外镀锌防腐措施的消防喷淋管道设计为内部通空气的预作用灭火系统,在开展定期试验后,部分水平布置的管道留有残水,在含氧条件下发生腐蚀穿孔。

关键词：核电厂消防水管道镀锌层腐蚀穿孔