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“互联网+”背景下智能配送现状与发展对策

物流技术 2021年第1期40卷 19-22页

作者：徐冽何庆柏任静尚景文钟文丽南京铁道职业技术学院江苏南京210031 中国铁路上海局集团有限公司嘉兴车务段浙江嘉兴314000

首先从企业应用智能机器人现状及国家鼓励智能机器人发展的政策分析两方面浅析了智能配送发展现状,指出了智能配送目前存在配送效率低、成本高、配送范围有限的问题。进而提出优化配送机器人设计、建立规范标准、加强交通管理的发展对... 详细信息

首先从企业应用智能机器人现状及国家鼓励智能机器人发展的政策分析两方面浅析了智能配送发展现状,指出了智能配送目前存在配送效率低、成本高、配送范围有限的问题。进而提出优化配送机器人设计、建立规范标准、加强交通管理的发展对策。通过探讨智能配送的发展问题,为物流企业向现代化、智能化转型助力,同时亦有助于我国早日建成智能配送的产业链市场。

关键词：互联网+ 智能配送交通管理与规划配送机器人设计优化

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断层滑移剪切套管变形内径变化规律研究

石油管材与仪器 2020年第4期6卷 38-40,45页

作者：席岩李军李方园曾夏茂钟文力北京工业大学建筑工程学院北京100124 中国石油大学(北京) 北京102249 中国石油大学(北京)克拉玛依校区新疆克拉玛依834000 中国石油西部钻探工程有限公司新疆乌鲁木齐830011 中石化西南石油工程有限公司固井分公司四川德阳618003

页岩气多级压裂过程中出现的套管变形问题亟待解决。现场测量数据表明,剪切变形是主要破坏形式。建立了基于断层滑移的页岩气井套管剪切变形数值模型,计算了剪切变形后套管内径沿轴向变化规律。研究结果表明:断层滑移后套管最小内径出... 详细信息

页岩气多级压裂过程中出现的套管变形问题亟待解决。现场测量数据表明,剪切变形是主要破坏形式。建立了基于断层滑移的页岩气井套管剪切变形数值模型,计算了剪切变形后套管内径沿轴向变化规律。研究结果表明:断层滑移后套管最小内径出现在套管滑移面附近;随着滑移距离的不断增加,套管内径缩径量不断增加;断层面与套管垂直时,套管剪切变形最为显著。为避免引起断层滑移,应在设计中尽量使井眼轨迹避开天然裂缝带,或者顺裂缝带走向钻进,以利于套管完整性的保护。研究结果可为页岩气井压裂过程中套管完整性的控制提供参考。

关键词：套管变形页岩气多级压裂断层滑移

夏仲元“辨体-病证症结合”论治桥本氏病经验采撷

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辽宁中医杂志 2023年第11期50卷 32-35页

作者：张新杰乔佳君仲文莉楼鹏飞夏仲元北京中医药大学北京100029 中日友好医院中医外科北京100029

该文总结分析夏仲元教授“辨体-病证症结合”论治桥本氏病相关经验。夏教授认为辨体需关注甲功、过敏体质;其中脾虚为重要病机,临证采用扶正消瘿八法治疗。甲亢期以养阴清热、重镇安神为主,佐以软坚散结,多用左归丸或知柏地黄丸加减。... 详细信息

该文总结分析夏仲元教授“辨体-病证症结合”论治桥本氏病相关经验。夏教授认为辨体需关注甲功、过敏体质;其中脾虚为重要病机,临证采用扶正消瘿八法治疗。甲亢期以养阴清热、重镇安神为主,佐以软坚散结,多用左归丸或知柏地黄丸加减。甲功正常期治以疏肝理气,化痰消瘿,采用柴胡疏肝散合消瘰丸加减。甲减期以补气温阳为先,方药采用金匮肾气丸合二仙汤加减。辨症常用山慈菇、射干、夏枯草、海藻玉壶汤治疗瘿肿;补中益气汤治疗乏力、肌肉关节痛;当归芍药散或瓜蒌薤白半夏汤治疗黏液性水肿。

关键词：桥本氏病辨体论治病证症结合论治经验传承

基于数据挖掘的中成药治疗慢性支气管炎用药规律分析

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现代中医临床 2022年第4期29卷 27-31页

作者：明雨仲文莉郑洁莹张洪春疏欣杨北京中医药大学北京100029 中日友好医院

目的探索分析中成药治疗慢性支气管炎用药规律,为慢性支气管炎的治疗及新药研发提供参考。方法搜集《中华人民共和国药典》中治疗慢性支气管炎的中成药处方,运用中医传承辅助平台统计中药功能与主治、使用频次,通过关联规则方法分析中... 详细信息

目的探索分析中成药治疗慢性支气管炎用药规律,为慢性支气管炎的治疗及新药研发提供参考。方法搜集《中华人民共和国药典》中治疗慢性支气管炎的中成药处方,运用中医传承辅助平台统计中药功能与主治、使用频次,通过关联规则方法分析中药的配伍规律、关联规则,运用熵聚类提取核心中药组合,挖掘候选新处方。结果《中华人民共和国药典》中治疗慢性支气管炎的中成药共有80种,14个品种有2种或2种以上剂型,共计102种,其中丸剂最多,共27种。治疗慢性支气管炎的中成药主要功效为止咳、化痰、平喘,同时还有清热、清肺、宣肺、润肺、降气等。80种中成药共使用中药167味,共计649次,使用频次≥7的中药共24味,出现频次较高的中药依次为甘草、苦杏仁、桔梗、麻黄、陈皮。使用频次≥10的中药组合共26组,出现频次较高的中药组合为甘草、苦杏仁,甘草、桔梗,陈皮、甘草,麻黄、苦杏仁。置信度≥0.7的中药关联规则共24组,置信度较高的中药关联规则为“桔梗,苦杏仁→甘草”“陈皮,桔梗→甘草”。基于复杂系统熵聚类,挖掘出8组核心中药组合。基于无监督熵层次聚类,挖掘出4首治疗慢性支气管炎的候选新处方。结论慢性支气管炎的常用治法为标本兼治,止咳、化痰、平喘以治标,调理脏腑、疏利气机以治本。中医治疗慢性支气管炎方法灵活多变,临床需根据实际情况辨证用药。

关键词：慢性支气管炎用药规律数据挖掘中成药

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页岩气水平井固井技术难点与对策浅析

非常规油气 2015年第2期2卷 69-72页

作者：钟文力洪少青吕聪张大翔尹玺中国石化西南石油工程有限公司固井分公司四川德阳618000

有效封固页岩产层,避免气体窜漏和稳定气井产量,是页岩气水平井固井的难题。在分析总结页岩地层特征、钻井施工条件及后期完井工艺特点的基础上,指出页岩气水平井固井技术难点主要集中在井壁的稳定性较差、套管安全下入难度大、套管居... 详细信息

有效封固页岩产层,避免气体窜漏和稳定气井产量,是页岩气水平井固井的难题。在分析总结页岩地层特征、钻井施工条件及后期完井工艺特点的基础上,指出页岩气水平井固井技术难点主要集中在井壁的稳定性较差、套管安全下入难度大、套管居中度不高、油基钻井液驱替及界面清洗困难、顶替效率不高、后期大型压裂对水泥石性能要求高等方面。针对这些难点,从有效通井、扶正器合理安放保证套管居中、高效前置液技术、采用塑性水泥浆体系等几个方面提出了提高页岩气水平井固井质量的技术对策,为今后页岩气水平井固井提供借鉴。现场应用表明,该配套技术提高了水泥环的封固质量。

关键词：油基钻井液页岩气固井塑性水泥浆

Understanding the risks of mercury sulfide nanoparticles in the environment: Formation, presence, and environmental behaviors

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Journal of Environmental Sciences 2022年第9期34卷 78-92页

作者： Pei Lei Nan Zou Yujiao Liu Weiping Cai Mengjie Wu wenli Tang Huan zhong State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Environmental and Life Sciences Program(EnLS) Trent UniversityPeterborough OntarioK9L 0G2Canada

Mercury(Hg) could be microbially methylated to the bioaccumulative neurotoxin methylmercury(Me Hg), raising health concerns. Understanding the methylation of various Hg species is thus critical in predicting the Me Hg risk. Among the known Hg species, mercury sulfide(HgS) is the largest Hg reservoir in the lithosphere and has long been considered to be highly inert. However, with advances in the analytical methods of nanoparticles, HgS nanoparticles(HgS NPs) have recently been detected in various environmental matrices or organisms. Furthermore, pioneering laboratory studies have reported the high bioavailability of HgS NPs. The formation, presence, and transformation(e.g., methylation) of HgS NPs are intricately related to several environmental factors, especially dissolved organic matter(DOM). The complexity of the behavior of HgS NPs and the heterogeneity of DOM prevent us from comprehensively understanding and predicting the risk of HgS NPs. To reveal the role of HgS NPs in Hg biogeochemical cycling, research needs should focus on the following aspects: the formation pathways, the presence, and the environmental behaviors of HgS NPs impacted by the dominant influential factor of DOM. We thus summarized the latest progress in these aspects and proposed future research priorities, e.g., developing the detection techniques of HgS NPs and probing HgS NPs in various matrices, further exploring the interactions between DOM and HgS NPs. Besides, as most of the previous studies were conducted in laboratories, our current knowledge should be further refreshed through field observations, which would help to gain better insights into predicting the Hg risks in natural environment.

关键词： Bioavailability Bioaccumulation Organic matter Mercury methylation Dissolution Aggregation

Tailoring interfacial electron redistribution of Ni/Fe_(3)O_(4) electrocatalysts for superior overall water splitting

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Journal of Energy Chemistry 2022年第10期31卷 330-338,I0008页

作者： wenli Xu Wenda zhong Chenfan Yang Rong Zhao Jing Wu Xuanke Li Nianjun Yang Hubei Province Key Laboratory of Coal Conversion and New Carbon Materials Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan UniversityChangsha 410082HunanChina Institute of Materials Engineering University of SiegenSiegen 57076Germany

Exploring highly active earth-abundant bifu nctional electrocatalysts for water splitting at a high output is essential for the forthcoming hydrogen ***-noble Fe_(3)O_(4) catalyst owns outstanding conductivity and its octahedral Fe sites can markedly promote water ***,it lacks active centers on the surface,resulting in its poor activity when used as a catalyst for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Herein,an electron redistribution strategy is proposed by introducing Ni sites onto the surface of Fe_(3)O_(4)(Ni/Fe_(3)O_(4)).The abundant delocalized electrons,derived from the electronic interaction of Ni and Fe_(3)O_(4) species,significantly optimize the electronic structure of the Ni/Fe_(3)O_(4) catalyst,leading to its improved adsorption *** Ni/Fe_(3)O_(4) catalyst exhibits remarkable bifunctional activity,steadily outputting 1000 mA cm^(-2)at the low overpotential of 387 mV for HER and 338 mV for OER,*** Ni/Fe_(3)O_(4) as a bifunctional catalyst for overall water splitting reaction exhibits the optimal performance with outstanding stability,obtaining a current density of1000 mA cm^(-2)at 1.98 V,much superior to a Pt/C‖IrO_(2)*** analysis and theoretical calculations collectively corroborate that the electron redistribution of Fe_(3)O_(4) is activated by coupling Ni species,leading to the promoted HER and OER *** electron redistribution strategy provides an effective method to activate transition metal-based catalysts which are promising to be utilized as superior electrocatalysts for the industrial overall water splitting reaction.

关键词： Electron redistribution Ni/Fe_(3)O_(4)heterojunction Overall water splitting

Data-driven Wasserstein distributionally robust chance-constrained optimization for crude oil scheduling under uncertainty

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Chinese Journal of Chemical Engineering 2024年第5期69卷 152-166页

作者： Xin Dai Liang Zhao Renchu He wenli Du Weimin zhong Zhi Li Feng Qian Key Laboratory of Smart Manufacturing in Energy Chemical Process Ministry of EducationEast China University of Science and TechnologyShanghai 200237China Engineering Research Center of Process System Engineering Ministry of EducationEast China University of Science and TechnologyShanghai 200237China

Crude oil scheduling optimization is an effective method to enhance the economic benefits of oil *** uncertainties,including uncertain demands of crude distillation units(CDUs),might make the production plans made by the traditional deterministic optimization models infeasible.A data-driven Wasserstein distributionally robust chance-constrained(WDRCC)optimization approach is proposed in this paper to deal with demand uncertainty in crude oil ***,a new deterministic crude oil scheduling optimization model is developed as the basis of this *** Wasserstein distance is then used to build ambiguity sets from historical data to describe the possible realizations of probability distributions of uncertain demands.A cross-validation method is advanced to choose suitable radii for these ambiguity *** deterministic model is reformulated as a WDRCC optimization model for crude oil scheduling to guarantee the demand constraints hold with a desired high probability even in the worst situation in ambiguity *** proposed WDRCC model is transferred into an equivalent conditional value-at-risk representation and further derived as a mixed-integer nonlinear programming *** case studies from a real-world refinery are conducted to show the effectiveness of the proposed ***-of-sample tests demonstrate that the solution of the WDRCC model is more robust than those of the deterministic model and the chance-constrained model.

关键词： Distributions Model Optimization Crude oil scheduling Wasserstein distance Distributionally robust chance constraints

Effect of doping order on metal-free heteroatoms dual-doped carbon as oxygen reduction electrocatalyst

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Chinese Chemical Letters 2021年第2期32卷 745-749页

作者： Hui-Juan Zhang Jing Geng Chunlei Cai Zi-Feng Ma zhong Ma wenli Yao Junhe Yang School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Chemical and Biomolecular Engineering.University of Illinois at Urbana-Champaign UrbanaIllinois 61801United States Department of Chemical Engineering Shanghai Jiaotong UniversityShanghai 200240China Department of Chemical Engineering Waterloo Institute for Nanotechnology(WIN)University of WaterlooWaterlooOntario N2L3G1Canada Jiangxi Key Laboratory of Power Battery and Material Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou 341000China

Metal-free heteroatoms dual-doped carbon has been recognized as one of the most promising Pt/C-substitutes for oxygen reduction reaction(ORR).Herein,we optimize the preparation process by doping order of metal-free heteroatoms to obtain the best electrocatalytic performance through three types of dual-doped carbon,including XC-N(first X doping then N doping),NC-X(first N doping then X doping) and NXC(N and X doping)(X=P,S and F).XC-N has more defect than the other two indicated by Raman spectra.X-ray photoelectron spectrom(XPS) measurements indicate that N and X have been dual-doped into the carbon matrix with different doping contents and modes,Electrocatalytic results,including the potential of ORR peak(Ep),the half-wave potential,the diffusion-limiting current density mainly follows the order of XC-N>NC-X> NXC,Furthermore,the synergistic effect of second atom doping are also compared with the single doped carbon(NC,PC,SC and FC).The differences in electronegativity and atomic radius of these metal-free heteroatoms can affect the defect degree,the doping content and mode of hete roatoms on carbon matrix,induce polarization effect and space effect to affect O2 adsorption and product desorption,ultimately to the ORR electrocatalytic performance.

关键词： Oxygen reduction reaction Metal-free electrocatalyst Heteroatoms dual-doped carbon Doping order N P S and F