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ZHONG Beijing, XI Jun
《能源前沿(英文)》 2008年 第2卷 第3期 页码 326-332 doi: 10.1007/s11708-008-0047-9
关键词: phenanthrene multidimensional computational sensitivity analysis polycyclic mechanism
Tuning the catalytic selectivity in electrochemical CO
Jiafang XIE,Yuxi HUANG,Hanqing YU
《环境科学与工程前沿(英文)》 2015年 第9卷 第5期 页码 861-866 doi: 10.1007/s11783-014-0742-1
关键词: electrochemical CO2 reduction Cu oxide nanostructure selectivity hydrocarbon formation
《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1733-x
关键词: Bioaugmentation Low-dose persulfate oxidation Polycyclic aromatic hydrocarbon Remediation
马永生,冯建辉,牟泽辉,赵培荣,包书景,王烽
《中国工程科学》 2012年 第14卷 第6期 页码 22-30
中国石油化工集团有限公司(简称中国石化)矿权区内拥有较为丰富的非常规油气资源,煤层气可勘探面积为10.19万km2,煤层埋深小于2 000 m的煤层气地质资源量为11.02万亿m3。页岩气可供勘探面积为17.5万km2,初步估算页岩气地质资源量为15.9万亿m3。页岩油勘探面积为11.76万km2,具有较大的资源基础及潜力。中国石化自2004年开始关注非常规油气资源,先后启动了页岩油气、煤层气等非常规油气资源的研究和勘探工作。目前在泌阳凹陷页岩油勘探泌页HF-1水平井分段压裂后获日产油23.6 m3;元坝地区多口陆相钻井测试获得高产气流,建南地区建页HF-1井日产气12 300 m3;延川南区块煤层气已探明地质储量为106.47亿m3,多口井排采获工业气流,初步形成了中国石化非常规油气资源多类型、多阶段的勘探开发格局。
Deepwater Hydrocarbon Exploration in China Seas: Yesterday, Today and Tomorrow
Zhi-gang Zhao,Hai-zhang Yang,Wu Tang,Shi-xiang Liu
《工程管理前沿(英文)》 2016年 第3卷 第4期 页码 390-395 doi: 10.15302/J-FEM-2016059
关键词: deepwater hydrocarbon exploration China Seas South China Sea Pearl River Mouth Basin Qiongdongnan Basin development directions
Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems
Mao-peng RAN, Li-hua XIE, Jun-cheng LI
《信息与电子工程前沿(英文)》 2019年 第20卷 第1期 页码 76-87 doi: 10.1631/FITEE.1800557
Our study is concerned with the time-varying formation tracking problem for second-order multi-agent systems that are subject to unknown nonlinear dynamics and external disturbance, and the states of the followers form a predefined time-varying formation while tracking the state of the leader. The total uncertainty lumps the unknown nonlinear dynamics and the external disturbance, and is regarded as an extended state of the agent. To estimate the total uncertainty, we design an extended state observer (ESO). Then we propose a novel ESO based time-varying formation tracking protocol. It is proved that, under the proposed protocol, the ESO estimation error and the time-varying formation tracking error can be made arbitrarily small. An application to the target enclosing problem for multiple unmanned aerial vehicles (UAVs) verifies the effectiveness and superiority of the proposed approach.
关键词: Multi-agent system Time-varying formation Formation tracking Nonlinear dynamics Extended state observer (ESO)
王梦恕,杨会军
《中国工程科学》 2008年 第10卷 第4期 页码 11-16
我国对大量石油储存的需求使石油贮备库的建设势在必行,地下水封岩洞油库是储存油品的最好形式。文章介绍了地下水封岩洞油库的密封原理、类型、优点等并重点对其选址、设计、施工进行介绍。笔者旨在提出地下水封岩洞油库的主要特点和规划、设计、施工的基本原则及标准,并指出我国尚未形成关于大规模地下水封岩洞油库设计、施工的完整技术,缺少指导性规范。开展地下水封岩洞油库的关键设计与施工技术研究具有重大的现实意义。
A. DAVOUDINEJAD, P. PARENTI, M. ANNONI
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 203-214 doi: 10.1007/s11465-017-0421-6
Predictive models for machining operations have been significantly improved through numerous methods in recent decades. This study proposed a 3D finite element modeling (3D FEM) approach for the micro end-milling of Al6061-T6. Finite element (FE) simulations were performed under different cutting conditions to obtain realistic numerical predictions of chip flow, burr formation, and cutting forces. FE modeling displayed notable advantages, such as capability to easily handle any type of tool geometry and any side effect on chip formation, including thermal aspect and material property changes. The proposed 3D FE model considers the effects of mill helix angle and cutting edge radius on the chip. The prediction capability of the FE model was validated by comparing numerical model and experimental test results. Burr dimension trends were correlated with force profile shapes. However, the FE predictions overestimated the real force magnitude. This overestimation indicates that the model requires further development.
关键词: 3D finite element modeling micro end-milling cutting force chip formation burr formation
《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1494-3
• A Passive Aeration Ditch was developed to treat decentralized wastewater.
关键词: Decentralized wastewater Passive aeration ditch Biofilm formation C/N ratio Salinity Model simulation
Is atmospheric oxidation capacity better in indicating tropospheric O formation?
《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1544-5
● This study summarizes and evaluates different approaches that indicate O3 formation.
关键词: O3 AOC O3 formation regime
Formation mechanism and modeling of surface waviness in incremental sheet forming
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0679-1
关键词: surface waviness incremental sheet forming numerical simulation formation mechanism deformation history
New insights into the formation of ammonium nitrate from a physical and chemical level perspective
《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1737-6
● Factor analysis of ammonium nitrate formation based on thermodynamic theory.
关键词: Ammonium nitrate formation Thermodynamic theory Aerosol liquid water content Source apportionment
标题 作者 时间 类型 操作
Reduced kinetic mechanism of -heptane oxidation in modeling polycyclic aromatic hydrocarbon formation
ZHONG Beijing, XI Jun
期刊论文
exogenous degrader-enhanced bioremediation with low-dose persulfate oxidation for polycyclic aromatic hydrocarbon
期刊论文
Deepwater Hydrocarbon Exploration in China Seas: Yesterday, Today and Tomorrow
Zhi-gang Zhao,Hai-zhang Yang,Wu Tang,Shi-xiang Liu
期刊论文
Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems
Mao-peng RAN, Li-hua XIE, Jun-cheng LI
期刊论文
3D finite element prediction of chip flow, burr formation, and cutting forces in micro end-milling of
A. DAVOUDINEJAD, P. PARENTI, M. ANNONI
期刊论文
Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD
期刊论文