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Incipient motion of cohesionless sediments on riverbanks with ground water injection

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International Journal of Sediment Research 2012年第1期27卷 111-119页

作者： Yan lu yong-jun lu Yee-meng CHIEW Nanjing Hydraulic Research Institute State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering School of Civil and Environmental Engineering Nanyang Technological Univ.

This study investigates the influence of ground water injection on the initial movement of non-cohesive sediment particles on a riverbank slope analytically and *** including the hydraulic gradient in the force analysis,the critical condition was derived to account for the effect of seepage flow, showing that the seepage hydraulic gradient and the riverbank slope are governing parameters in modifying the incipient motion of sediments on a riverbank *** investigations were performed in an open-channel flume for various riverbank slopes and hydraulic gradients of injection, showing that the critical shear stress increases with decreasing riverbank slopes and vise-versa,while injection reduces the critical *** experimental data agree well with the theoretical derived expression of the critical condition in the case of injection.

关键词： Incipient motion Riverbank Injection Sediment Seepage

Kinetics of Spherical Interface in Crystal Growth

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Chinese Physics Letters 2017年第4期34卷 112-115页

作者： Mei-Qin Fu Qing-Ling Bi yong-jun lu School of Physics Beijing Institute of Technology Beijing 100081

The growth kinetics of spherical NiAl and CuZr crystals are studied by using molecular dynamics simulations. The growth rates of crystals are found to increase with the grain radius. The simulations show that the interface thickness and the Jackson α-faetor increase as the growth proceeds, indicating that the interface becomes increasingly rough during growth. Due to the increasing interface roughening, the fraction of repeatable growth sites at interface f is proposed to actually increase in growth. An attachment rate, which is defined as the fraction of atoms that join the crystal interface without leaving, is used to approximate f, displaying a linear increase. With this approximation, we predict the growth rates as a function of the crystal radius, and the results qualitatively agree with those from the direct simulations.

关键词： Kinetics of Spherical Interface in Crystal Growth

Responses of river bed evolution to flow-sediment process changes after Three Gorges Project in middle Yangtze River:A case study of Yaojian reach

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Water Science and Engineering 2020年第2期13卷 124-135页

作者： Li-qin Zuo yong-jun lu Huai-xiang Liu Fang-fang Ren Yuan-yuan Sun State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research InstituteNanjing 210029China Middle Changjiang River Survey Bureau of Hydrology and Water Resources Wuhan 430010China

The Three Gorges Project(TGP)has changed the flow-sediment process in the middle Yangtze *** navigation purposes,there is an urgent need to study the changes of the river regime over a long-term period and the shoal-channel evolution over different seasons since the completion of the *** on analysis of the measured data and the results of a two-dimensional mathematical model,the changes of the river regime and river bed evolution in the Yaojian reach downstream of the TGP were *** show that a high sediment transport flux helps to keep the main flow in the North Branch,while a low sediment transport flux helps to keep the main flow in the South ***,the main branch will not change in the near future because of the low sediment transport *** this study,the flow-sediment process adjusted by the TGP was restored to the conditions before the TGP,and the river bed evolution under the adjusted and non-adjusted flow-sediment conditions was *** the completion of the TGP,the reservoir storage accelerated the flood recession process and decreased the erosion by 11.9%under the flow-sediment conditions in 2010,and the deposition in the flood season decreased by 56.4%.

关键词： River regime River bed evolution Flow-sediment process Three Gorges Project Yaojian reach Middle Yangtze River Navigation channel

CATALYTIC SYNTHESIS OF α-CYANO-α,β-UNSATURATED SULPHONES IN THE PRESENCE OF ORGANOTELluRIUM OXIDE

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Chinese Chemical Letters 1991年第9期2卷 683-684页

作者： Qi ZHONG yong jun lu Chang Qing LIU Wei Guo TAO yong jun ZOU Chemistry Department,Yangzhou Teachers College,Yangzhou,225002

Using bis(p-methoxyphenyl)telluroxide(BMPTO)as the catalyst, phenylsulphonyl acetonitrile condensed easily with aromatic aldehydes at room temperature to give -cyano- ,β-unsaturated sulphones in high yields.

关键词： OC UNSATURATED SULPHONES IN THE PRESENCE OF ORGANOTELluRIUM OXIDE CATALYTIC SYNTHESIS OF CYANO De

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Chinese Medical Journal 2013年第13期126卷 2517-2522页

作者： ZANG Lei DU Peng HAI yong SU Qing-jun lu Shi-bao LIU Tie Department of Orthopedics Beijing Chaoyang Hospital CapitalMedical University Beijing 100020 China (Zang L Du P Hai Y SuQ J Lu SB and Liu T)

Background Coflex, a type of interspinous process implant, can provide intervertebral dynamic stability for surgical segments and effectively relieve lumbocrural pain. However, few studies have described therapeutic strategies and the avoidance of Coflex implant complications. Methods Coflex implant complications in this study included intraoperative or postoperative spinous process fracture, aggravated postoperative lumbocrural pain, dislodgment and malposition. The complications were analyzed, and therapeutic strategies were applied according to the specific complication. The Visual Analogue Scale and Oswestry Disability Index scores were evaluated by using the paired-samples test from SPSS 12.0. Results Conservative treatment was provided to seven patients who experienced aggravated lumbocrural pain even though their devices remained in the correct position, and pedicle screw treatment was used as an alternative in four cases. The Visual Analogue Scale and Oswestry Disability Index scores showed evident improvement in these patients. The Visual Analogue Scale and Oswestry Disability Index scores of two patients who underwent revision were also improved. Conclusions Coflex implants should be avoided in patients with osteoporosis, a narrow interspinous space and intervertebral coronal spondylolysis, or sagittal instability. Furthermore the device choice, depth of implantation, and clamping intensity should be appropriate. Conservative treatment can be provided to patients with symptoms if the device remains in the correct position; however, revisions and salvages should be undertaken with internal fixation of pedicle screws for patients with device malposition, intraoperative implantation failure, or device intolerance.

关键词： lumbar spine non-fusion, dynamic stabilization system, coflex complication

High-Mg Diorite from Qulong in Southern Tibet: Implications for the Genesis of Porphyry Cu Deposits in Collisional Orogens

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High-Mg Diorite from Qulong in Southern Tibet: Implications ...

Effect of ^(103)Pd on proliferation and apoptosis of vascular smoothmuscle cells

2014年中国地球科学联合学术年会——专题34：特提斯—青藏高原地质演化与成矿

作者： Zhi-Ming Yang yong-jun lu Zeng-Qian Hou Zhao-Shan Chang INSTITUTE OF GEOLOGY CHINESE ACADEMY OF GEOLOGICAL SCIENCES ECONOMIC GEOLOGY RESEARCH CENTRE (EGRU) SCHOOL OF EARTH AND ENVIRONMENTAL SCIENCES JAMES COOK UNIVERSITYTOWNSVILLE QLD 4811 AUSTRALIA CENTRE FOR EXPLORATION TARGETING SCHOOL OF EARTH AND ENVIRONMENT THE UNIVERSITY OF WESTERN AUSTRALIAPERTH AUSTRALIA

Porphyry Cu deposits are found mostly in island-and continental-arc settings in association with subduction-related,calc-alkaline silicic magmas(Richards,2003;Cooke et al.,2005).However,recent studies have discovered that such deposits are also found in collisional orogenic settings,such as in the Tibetan–Himalayan orogen,including classic examples such as the Miocene Gangdese porphyry Cu belt(Hou et al.,2004,2009).It is generally accepted that hydrous,sulfur-rich,mineralized porphyritic intrusions in arc settings are derived from a mantle wedge metasomatized by subduction zone fluids(Richards,2003).However,the origin of ore-forming porphyritic intrusions in collisional orogenic settings,which typically have

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Nuclear Science and Techniques 2003年第4期14卷 253-256页

作者： luO Quan-yong, ZHU jun, lu Han-Kui, ZHU Rui-Sen(Department of Nuclear Medicine, Shanghai Sixth People’s Hospital, Shanghai Jiaotong University, Shanghai 200233) Department of Nuclear Medicine Shanghai Sixth People's Hospital Shanghai Jiaotong University 上海 200233

This study aimed at the effect of γ -emitting radionuclide 103Pd on the proliferation and apoptosis ofvascular SMCs (smooth muscle cells) in vitro. The cavy aortic SMCs were cultured with culture medium M-199. Theexperiments were carried out in two groups, one for proliferation test and the other for apoptosis test. In each group,103Pd solutions with various radioactivities were respectively added to the culture solution to irradiate SMCs for 72 h,while non-radioactive palladium solution was added to the control. 3H-thymidine incorporation test and liquid scin-tillator were used to detect the effect of 103Pd on the proliferation of SMCs. Flow cytometer was used to detect theapoptotic SMCs. The inhibition rate of SMCs proliferation by 1.85 MBq 103Pd solution was 2.3%, which was not sig-nificant, while the inhibition rate increased from 41.6% to 91.3% as the 103Pd activity increased from 7.40 MBq to 37MBq. The apoptosis rate of SMCs was extremely low (less than 4.0%) by 103Pd with activity from 1.85 MBq to 37MBq. The results suggest that the proliferation of SMCs can be repressed effectively in a dose-dependent fashion by103Pd in vitro. The mechanism of its inhibiting over neointima proliferation is likely to inhibite SMCs proliferationrather than to induce its apoptosis by 103Pd. 103Pd can be used as a γ -emitting intravascular brachytherapy radionu-clide to inhibit SMCs proliferation.

关键词：钯血管平滑肌细胞细胞增殖细胞凋亡冠状动脉成形术

2D NUMERICAL SIMULATION OF FLOOD AND FluVIAL PROCESS IN THE MEANDERING AND ISLAND-BRAIDED MIDDLE YANGTZE RIVER

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International Journal of Sediment Research 2005年第4期20卷 333-349页

作者： yong-jun lu1, Zhao-yin WANG2, Li-qin ZUO3, and Li-jun ZHU,Department of Hydraulic Engineering of Tsinghua University,Serior Eingineer,Nanjing Hydraulic Research Institute Nanjing Hydraulic Research Institute Nanjing 210029 China Department of Hydraulic Engineering of Tsinghua University Beijing 100084 China

The characteristics of water flow and sediment transport in a typical meandering and island-braided reach of the middle Yangtze River is investigated using a two-dimensional (2D) mathematical model. The major problems studied in the paper include the carrying capacity for suspended load, the incipient velocity and transport formula of non-uniform sediment, the thickness of the mixed layer on the riverbed, and the partitioning of bed load and suspended load. The model parameters are calibrated using extensive field data. Water surface profiles, distribution of flow velocities, riverbed deformation are verified with site measurements. The model is applied to a meandering and island-braided section of the Wakouzi-Majiazui reach in the middle Yangtze River, which is about 200 km downstream from the Three Gorges Dam, to study the training scheme of the navigation channels. The model predicts the processes of sediment deposition and river bed erosion, changes of flow stage and navigation conditions for the first 20 years of impoundment of the Three Gorges Project .

关键词： Yangtze River 2D mathematical model Meandering and braided channel Flow velocity Sediment transport

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基于构件的产业化建筑工程造价计价

土木工程与管理学报 2017年第1期34卷 61-66页

作者：傅玲雍军路峻王小鹃成都大学建筑与土木工程学院四川成都610106

本文以产业化建筑安装工程费为研究对象,针对产业化建筑工程造价偏高阻碍其推广的问题展开研究。首先从理论上研究产业化建筑工程造价的组成,依据SI建筑体系明确界定产业化建筑工程造价的范畴,我国幅员辽阔,提出产业化建筑的推广应分阶... 详细信息

本文以产业化建筑安装工程费为研究对象,针对产业化建筑工程造价偏高阻碍其推广的问题展开研究。首先从理论上研究产业化建筑工程造价的组成,依据SI建筑体系明确界定产业化建筑工程造价的范畴,我国幅员辽阔,提出产业化建筑的推广应分阶段进行,其工程造价计价也应与之匹配。然后结合实际项目,用现行的清单计价模式和产业化预制构件计价模式分别对该项目进行计量和计价,对比两者计价组成的差异,并分析预制构件、部品等工程造价偏高的主要原因,认为不同的计算方法会很大程度影响预制构件和部品的价格。尝试建立完整且适合产业化建筑可持续发展的计价体系,比较传统建筑与产业化建筑计价的差异,为产业化建筑造价领域政府补偿政策的制定和预制构件生产企业成本控制提供参考。

关键词：构件部品产业化工程造价