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煤气与热力 2017年第7期37卷 25-28页

作者：江建海刘翔王升台州市城市天然气有限公司浙江台州318000 杭州市城乡建设设计院股份有限公司浙江杭州310004

比较大落差山体定向钻穿越中传统工艺法与正推工艺法的施工工艺及优缺点,探讨施工过程中出现S形轨迹、钻头动力不足、泥浆不足等问题的解决措施,结合工程实例,介绍正推工艺法中钻机、钻具类型选择及工艺流程。

关键词：非开挖定向钻大高差定向钻正推工艺

Exploration of Gas-Dependent Self-Adaptive Reconstruction Behavior of Cu₂O for Electrochemical CO₂ Conversion to Multi-Carbon Products

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NANO-MICRO LETTERS 2025年第1期17卷 1-17页

作者： Zhang, Chaoran Gu, Yichuan Jiang, Qu sheng, Ziyang Feng, Ruohan wang, Sihong Zhang, Haoyue Xu, Qianqing Yuan, Zijian Song, Fang Shanghai Jiao Tong Univ Sch Mat Sci & Engn State Key Lab Met Matrix Composites Shanghai 200240 Peoples R China

Structural reconstruction of electrocatalysts plays a pivotal role in catalytic performances for CO2 reduction reaction (CO2RR), whereas the behavior is by far superficially understood. Here, we report that CO2 accessibility results in a universal self-adaptive structural reconstruction from Cu2O to Cu@CuxO composites, ending with feeding gas-dependent microstructures and catalytic performances. The CO2-rich atmosphere favors reconstruction for CO2RR, whereas the CO2-deficient one prefers that for hydrogen evolution reaction. With the assistance of spectroscopic analysis and theoretical calculations, we uncover a CO2-induced passivation behavior by identifying a reduction-resistant but catalytic active Cu(I)-rich amorphous layer stabilized by *CO intermediates. Additionally, we find extra CO production is indispensable for the robust production of C2H4. An inverse correlation between durability and FECO/FEC2H4 is disclosed, suggesting that the self-stabilization process involving the absorption of *CO intermediates on Cu(I) sites is essential for durable electrolysis. Guided by this insight, we design hollow Cu2O nanospheres for durable and selective CO2RR electrolysis in producing C2H4. Our work recognizes the previously overlooked passivation reconstruction and self-stabilizing behavior and highlights the critical role of the local atmosphere in modulating reconstruction and catalytic processes.

关键词： CO2 reduction reaction Electrocatalysts Cu2O Reconstruction Self-adaptive electrocatalysis

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辣蓼对酵母的影响及其在甜酒曲制作中的应用

食品研究与开发 2017年第2期38卷 117-120页

作者：赵申升相飞汪立平张笑笑张杰上海海洋大学食品科学与技术学院上海201306

在一定范围内添加辣蓼对酵母的生长有促进作用。对辣蓼甜酒曲制作过程中辣蓼添加量、种曲添加量和培曲时间等进行单因素分析,以糖化力和发酵力为指标,正交试验结果表明辣蓼甜酒曲的最佳制曲工艺条件为:辣蓼添加量6%,种曲添加量4%,培曲时... 详细信息

在一定范围内添加辣蓼对酵母的生长有促进作用。对辣蓼甜酒曲制作过程中辣蓼添加量、种曲添加量和培曲时间等进行单因素分析,以糖化力和发酵力为指标,正交试验结果表明辣蓼甜酒曲的最佳制曲工艺条件为:辣蓼添加量6%,种曲添加量4%,培曲时间72 h,并通过酿酒试验验证辣蓼甜酒曲所制甜米酒酸甜爽口,酒度适宜。

关键词：辣蓼酵母菌甜酒曲正交试验

利用响应面法优化巴卡亭III生成10-DAB的工艺条件

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生物技术通报 2017年第4期33卷 238-246页

作者：朱凤芝程赪刘祥胜张昆王立爽王敏骆健美工业发酵微生物教育部重点实验室(天津科技大学)天津市工业微生物重点实验室天津科技大学生物工程学院天津300457

10-脱乙酰基巴卡亭III(10-DAB)是紫杉烷类抗肿瘤药物多烯紫杉醇的前体物质。采用响应面法优化成团泛菌P2-A-8转化巴卡亭III生成10-DAB的工艺条件。利用Box-Behnken试验和方差分析,从菌体培养时间、菌体浓度OD600、底物终浓度、转化温度... 详细信息

10-脱乙酰基巴卡亭III(10-DAB)是紫杉烷类抗肿瘤药物多烯紫杉醇的前体物质。采用响应面法优化成团泛菌P2-A-8转化巴卡亭III生成10-DAB的工艺条件。利用Box-Behnken试验和方差分析,从菌体培养时间、菌体浓度OD600、底物终浓度、转化温度、转化时间5个方面优化成团泛菌P2-A-8转化巴卡亭III生成10-DAB的工艺条件。结果表明,获得最佳转化工艺条件为:菌体经过二级培养12 h,转接后调节初始OD600为3.0,此时,加入溶解于甲醇的巴卡亭III溶液,使其终浓度为0.007 mg/m L,32℃,200 r/min下转化4 d,此时10-DAB的生成率达到24.5%,比优化前提高了446.8%。实验结果表明,响应面法优化成团泛菌P2-A-8转化巴卡亭III生成10-DAB的工艺条件合理可行。该研究成果对于多烯紫杉醇生物合成具有重要的应用价值。

关键词： 10-脱乙酰巴卡亭III(10-DAB) 巴卡亭III 成团泛菌生物转化工艺优化

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标准配送式智能配电台区典型建设模式

智能电网 2016年第12期4卷 1247-1251页

作者：向驰徐升王福润王合建唐巍南瑞集团公司(国网电力科学研究院) 北京市昌平区102200 北京南瑞电研华源电力技术有限公司北京市昌平区102200 中国农业大学信息与电气工程学院北京市海淀区100083

标准配送式智能配电台区的建设对促进智能电网的建设具有重大意义。针对当前缺乏对标准配送式智能配电台区典型建设模式的研究的现状,提出标准配送式智能配电台区典型建设模式。从配电变压器、智能配电箱、智能配电终端、设备接口、通... 详细信息

标准配送式智能配电台区的建设对促进智能电网的建设具有重大意义。针对当前缺乏对标准配送式智能配电台区典型建设模式的研究的现状,提出标准配送式智能配电台区典型建设模式。从配电变压器、智能配电箱、智能配电终端、设备接口、通信模式共5个方面对标准配送式智能配电台区的组成要素进行分析;基于组成要素,综合考虑敷设方式、配变容量、配电箱功能及应用场景,给出标准配送式智能配电台区的分类依据;最终形成7类11种标准配送式智能配电台区典型建设模式,并举例说明典型建设模式的详细配置方案。

关键词：标准配送式智能配电台区典型建设模式组成要素

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新疆阿魏化学成分及药理活性研究进展

国际药学研究杂志 2017年第6期44卷 495-499页

作者：黄雅婷岳丽君申翔宇王坤刘春兰中央民族大学生命与环境科学学院北京100081 中央民族大学北京市食品环境与健康工程技术研究中心北京100081

新疆阿魏(Ferula sinkiangensis ***)是分布在新疆北部的濒危民族植物药,主要含有倍半萜香豆素、含硫化合物、多糖和芳香族类等多种有效化学成分。目前多采用色谱技术建立指纹图谱实现质量控制。原植物药和特征化合物都具有抑菌、杀虫... 详细信息

新疆阿魏(Ferula sinkiangensis ***)是分布在新疆北部的濒危民族植物药,主要含有倍半萜香豆素、含硫化合物、多糖和芳香族类等多种有效化学成分。目前多采用色谱技术建立指纹图谱实现质量控制。原植物药和特征化合物都具有抑菌、杀虫、抗过敏、抗肿瘤等广泛药理作用。本文主要从资源现状、化学成分、指纹图谱和药理活性等方面对国内外新疆阿魏的研究状况进行综述,为其系统化研究、有效质量控制和高效开发利用提供参考。

关键词：新疆阿魏资源分布化学成分指纹图谱药理活性

Error Analysis on Hérmite Learning with Gradient Data

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Chinese Annals of Mathematics,Series B 2018年第4期39卷 705-720页

作者： Baohuai sheng Jianli wang Daohong xiang Department of Mathematics Shaoxing Univeristy Shaoxing 312000 Zhejiang China. Department of Mathematics Zhejiang Normal University Jinhua 321004 Zhejiang China.

This paper deals with Hermite learning which aims at obtaining the target function from the samples of function values and the gradient values. Error analysis is conducted for these algorithms by means of approaches f... 详细信息

关键词： Hermite learning Gradient learning Learning rate Convex analysis Multitask learning Differentiable reproducing kernel Hilbert space

Visualization of flow behavior in ore-segregated packed beds with fine interlayers

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International Journal of Minerals,Metallurgy and Materials 2020年第7期27卷 900-909页

作者： Lei-ming wang sheng-hua Yin Ai-xiang Wu Key Laboratory of Ministry of Education for High-Efficient Mining and Safety of Metal University of Science and Technology BeijingBeijing 100083China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Engineering University of British Columbia309-6350 Stores RoadVancouver V6T 1Z4BCCanada

Ore particles,especially fine interlayers,commonly segregate in heap stacking,leading to undesirable flow paths and changeable flow velocity fields of packed *** tomography(CT),COMSOL Multiphysics,and MATLAB were utilized to quantify pore structures and visualize flow behavior inside packed beds with segregated fine *** formation of fine interlayers was accompanied with the segregation of particles in packed *** particles reached the upper position of the packed beds during *** revealed that the average porosity of fine interlayers(24.21%)was significantly lower than that of the heap packed by coarse ores(37.42%),which directly affected the formation of flow ***,the potential flow paths in the internal regions of fine interlayers were *** flowed and bypassed the fine interlayers and along the sides of the packed *** velocity also indicated that the flow paths easily gathered in the pore throat where flow velocity(1.8×10^-5 m/s)suddenly *** stagnant regions with a flow velocity lower than 0.2×10^-5 m/s appeared in flow paths with a large diameter.

关键词： fine interlayer flow behavior computed tomography segregation preferential flow

Early Cretaceous uplift history of the Dabie orogenic belt: Evidence from pluton emplacement depths

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Science China Earth Sciences 2014年第5期57卷 1129-1140页

作者： wang Yongsheng wang HaiFeng sheng Yong xiang BiWei School of Resource and Environmental Engineering Hefei University of Technology Faculty of Earth Sciences China University of Geosciences

The North Dabie complex unit （NDC） is a widely exposed petro-tectonic unit. To understand post-orogenic uplift history and mechanism of the Dabie orogenic belt, many samples of granite, granodiorite, diorite, and alkali feldspar granite with precise zircon U-Pb ages were collected for electron microprobe analysis of hornblende. Emplacement pressure values were then cal- culated by using an Al-in-hornblende geobarometer. The result shows that total A1 （A1T） values in hornblende range from 1.17 to 1.97 p.f.u., XFe（=Fe/（Fe＋Mg）） from 0.4 to 0.65, and corresponding pressure values from 256.8 to 676.2 MPa for A1T greater than 1.17. It is suggested that although the main mechanism for the uplift is tectonic extension, inhomogeneous uplift related to the pluton emplacement is also important during post-orogenic evolution of the Dabie orogenic belt. Emplacement depth dis- tribution of the plutons shows that uplift in the NDC is affected by horst-graben structures since 120 Ma.

关键词： Dabie orogenic belt North Dabie complex belt Early Cretaceous plutons Al-in-hornblende geobarometer

Selective oxidation of emerging organic contaminants in heterogeneous Fenton-like systems

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Nano Research 2024年第11期17卷 9300-9325页

作者： sheng wang Yuxin Lu Shangkun Pei xiang Li Bo wang Key Laboratory of Cluster Science Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Advanced Technologies Research Institute (Jinan) Advanced Research Institute of Multidisciplinary Science School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China

Heterogeneous Fenton-like reaction shows great potential for eliminating organic substances (e.g. emerging organic contaminants (EOCs)) in water, which has been widely explored in recent decades. However, the catalytic mechanisms reported in current studies are extremely complicated because multiple mechanisms coexist and contribute to the removal efficiencies. Most importantly, heterogeneous systems show selective oxidation properties, which are crucial for improving the efficiencies in the catalytic elimination of organic substances. Thus, this critical review summarizes and compares the diverse existing mechanisms (non-radical and radical pathways) in heterogeneous catalytic processes based on recent studies. The typical oxidation mechanisms during selective advanced oxidation of EOCs were systematically discussed based on the following sections, including the selective adsorption and generation of reactive oxygen species (ROS) in photo/electron-Fenton and Fenton-like systems. Moreover, the non-radical pathways are discussed in depth by the singlet oxygen, high-valent metal-oxo, electron transfer process, etc. Moreover, the direct oxidative transfer process for the removal of EOCs was introduced in recent studies. Finally, the cost, feasibility as well as the sustainability of heterogeneous Fenton-like catalysts are summarized. This review offers useful guidance for developing suitable strategies to develop materials for decomposing the organic substrates.

关键词： emerging organic contaminants heterogeneous advanced oxidation process heterogeneous activators selectivity