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Frontiers of Chemical Science and Engineering 2024年第4期18卷 97-106页

作者： Ying Li lu Wang Junyan Xie Yong Dai Xuehong gu Xuerui Wang State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Quzhou Membrane Material Innovation Institute Quzhou 324000China

Membrane gas separation is considered an energy-saving technique to extract He from natural gas due to no phase change and room temperature ***,the membrane performance was strongly limited by the trade-off between permeance and ***,novel 4,4′-(hexafluoroisopropylidene)diphthalic anhydride(6FDA)-2,2′-bis(3-amino-4-hydroxyphenyl)hexafluoropropane(APAF)-5-amino-2-(4-aminobenzene)benzimidazole(BIA)asymmetric membranes with a thickness of 300 nm were successfully prepared by the non-solvent induced phase separation *** membrane performance was modulated by regulating dope solution compositions(e.g.,tetrahydrofuran and polymer concentration).The ideal He/CH_(4) selectivity was 124 and the optimized He permeance reached 87 GPU,beyond the current upper ***/CH_(4) selectivity was 75 and He permeance was 73 GPU for the binary mixture feed containing 0.2 mol%*** membrane showed good resistance to CO_(2) and C_(2)H_(6),which are the typical impurities in natural *** 6FDA-APAF-BIA membranes have good stability(>160 h),which can provide great potential in He extraction from natural gas.

关键词： He separation membrane natural gas copolyimide

Power System Flow Adjustment and Sample Generation Based on Deep Reinforcement Learning

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Journal of Modern Power Systems and Clean Energy 2020年第6期8卷 1115-1127页

作者： Shuang Wu Wei Hu Zongxiang lu Yujia gu Bei Tian Hongqiang Li the Department of Electrical Engineering Tsinghua UniversityBeijingChina State Grid Ningxia Electric Power Co.Ltd. YinchuanChina

With the increasing complexity of power system structures and the increasing penetration of renewable energy,the number of possible power system operation modes increases *** is difficult to make manual power flow adjustments to establish an initial convergent power flow that is suitable for operation mode *** present,problems of low efficiency and long time consumption are encountered in the formulation of operation modes,resulting in a very limited number of generated operation *** this paper,we propose an intelligent power flow adjustment and generation model based on a deep network and reinforcement ***,a discriminator is trained to judge the power flow convergence,and the output of this discriminator is used to construct a value ***,the reinforcement learning method is adopted to learn a strategy for power flow convergence ***,a large number of convergent power flow samples are generated using the learned adjustment *** with the traditional flow adjustment method,the proposed method has significant advantages that the learning of the power flow adjustment strategy does not depend on the parameters of the power system ***,this strategy can be automatically learned without manual intervention,which allows a large number of different operation modes to be efficiently *** verification results of a case study show that the proposed method can independently learn a power flow adjustment strategy and generate various convergent power flows.

关键词： Deep reinforcement learning power flow adjustment system operation mode sample generation

Review on multi-dimensional assembled S-scheme heterojunction photocatalysts

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Journal of Materials Science & Technology 2023年第29期160卷 214-239页

作者： Jiani lu Shaonan gu Hongda Li Yinan Wang Meng guo guowei Zhou Key Laboratory of Fine Chemicals in Universities of Shandong Jinan Engineering Laboratory for Multi-scale Functional MaterialsSchool of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China Liuzhou Key Laboratory for New Energy Vehicle Power Lithium Battery School of Electronic EngineeringGuangxi University of Science and TechnologyLiuzhou 545006China

S-scheme heterostructure photocatalysts utilize the synergistic and superposition effects of materials,ef-fectively separating electrons and holes,maintaining strong redox capacity,and addressing issues en-countered by current photocatalytic *** review explores the origins and unique benefits of S-scheme ***,we summarized and discussed the effects of different dimensions of semiconductors constituting S-scheme heterojunctions and the similarities and differences in elec-tron transfer processes when constructing ***,we analyzed several methods for proving the formation of S-scheme heterojunctions and the electron transfer process,both directly and ***,we review the applications of S-scheme heterojunctions in various fields of photo-catalysis,including photocatalytic water splitting,pollution degradation,CO_(2) reduction and other related photocatalytic *** hope is that this review will provide an essential reference for the devel-opment and application of S-scheme heterojunction photocatalysis.

关键词： S-scheme heterojunctions Multi-dimensional assembled structures Photocatalysis Water splitting Pollution degradation Co_(2)reduction

Expansion and Change of Rural Settlements in Traditional Agricultural Regions:Based on Village Investigation in Pingdu County

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Chinese Journal of Population,Resources and Environment 2008年第2期6卷 55-61页

作者： Dong Dekun lu Jinping gu Shuzhong Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100101 China

The rural settlements accounted for a great proportion of overall building land in China,but it still expanded in recent years along with urbanization and gradually decreasing rural *** explore the reason for this phenomenon,an analy- sis has been made based on the investigation in a traditional agri- cultural *** study found that socioeconomic factors,in- cluding the scale of families and its quantity,the improvement of rural public infrastructure,the change of population and the pres- sure of arable land,have effects on the *** view on land tenure which has shaped in farmers minds in the long haul makes them dispose their houses cautiously,and this was the main cause of the fact that one household own more than one *** addition,the limitations of rural land institution are unconducive to inspiriting the transfer of farmers' building land and redevel- opment of the idle housing land.

关键词： rural settlements housing land expansion and change land use rural

Assessing the accessibility to fire hazards in preserving historical towns: Case studies in suburban Shanghai, China

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Frontiers of Architectural Research 2022年第4期11卷 731-746页

作者： Harrison Huang lu Li Yan gu College of Civil Engineering and Architecture Zhejiang UniversityHangzhouChina Department of Environmental Design Fuzhou UniversityFuzhouChina Center for Balance Architecture of Zhejiang University China Architectural Design&Research Institute of Zhejiang University China

Protecting large-scale heritage settlements from being damaged by fires has become increasingly crucial in developing areas that lack adequate legislation, emergency planning, and particularly efficient techniques. This study provides a systematic emergency assessment methodology for evaluating the accessibility of specific fire-fighting techniques to mitigate fire hazards in historical towns and examines how the integration of municipal and local fire services works. Specifically, this paper examines the accessibility of fire trucks, local fire services and the overall protection capacity. There are quantitative calculations of the obstruction degrees on main streets, the feasible moving distances of fire-fighting vehicles and firefighters at a given time, and the fire protection coverage and intensity in each town. Using these methods, this paper systematically assesses the fire resistance of three historical towns, Chuansha, Gaoqiao and Fengjing, as case studies. In contrast to previous studies focusing on the vulnerability of buildings in large historical settlements, this assessment method combines an examination of street networks and various emergency response techniques and is particularly applicable to developing areas.

关键词： Accessibility to fire hazards Emergency assessments Fire-fighting techniques Heritage protection Historical towns Developing areas

Dynamic management system of ore blending in an open pit mine based on GIS/GPS/GPRS

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Mining Science and Technology 2010年第1期20卷 132-137页

作者： gu Qinghua lu Caiwu guO Jinping JING Shigun School of Management Xi'an University of Architecture & Technology Xi'an 710055 China luoyang luanchuan Molybdenum Industry Group lnc. luoyang 471500 China

Using GIS, GPS and GPRS, a dynamic management system of ore blending in an open pit mine has been designed and developed. A linear program was established in a practical application. The system is very good at automatically drawing up a daily production plan of ore blending and monitors and controls the process of mining production in real time. Experiments under real conditions show that the performance of this system is stable and can satisfy production standards of ore blending in open pit mines.

关键词： GIS GPS GPRS linear programming ore blending open pit mine

Concurrent tuberculous transverse myelitis and asymptomatic neurosyphilis:A case report

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World Journal of Clinical Cases 2021年第31期9卷 9645-9651页

作者： lu-Yan gu Jun Tian Ya-Ping Yan Department of Neurology Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009Zhejiang ProvinceChina

BACKGROUND Tuberculous myelitis is a rare manifestation of tuberculosis(TB)that is usually caused by hematogenous spread of Mycobacterium tuberculosis(MTB).Neurosyphilis is a neurological disease that occurs when Treponema pallidum invades the brain or the spinal ***,these two diseases involving the spinal cord are rare and cases of concurrent tuberculous transverse myelitis and asymptomatic neurosyphilis have seldom been *** SUMMARY A 56-year-old man presented with numbness and pain of both lower limbs for 2 wk and dysuria for 1 *** serology and cerebrospinal fluid(CSF)analysis supported the diagnosis of neurosyphilis and the patient was treated with intravenous ceftriaxone at first,but symptoms still ***,magnetic resonance images revealed multiple lesions along the cervicothoracic junction,and chest computed tomography showed a typical TB *** DNA was detected in the CSF sample by metagenomic next-generation *** the patient was diagnosed with tuberculous myelitis combined with asymptomatic ***,quadruple anti-TB drug standardized therapy was empirically used and his neurological symptoms improved *** Patients can have coinfection with tuberculous transverse myelitis and asymptomatic *** with neurosyphilis should be examined for other pathogens.

关键词： Tuberculous myelitis Neurosyphilis Metagenomic next-generation sequencing Case report

A Regularization Semismooth Newton Method for P_(0)-NCPs with a Non-monotone Line Search

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Numerical Mathematics(Theory,Methods and Applications) 2012年第2期5卷 186-204页

作者： Li-Yong lu Wei-Zhe gu Wei Wang Department of Mathematics School of ScienceTianjin University of TechnologyTianjin 300384China Department of Mathematics School of ScienceTianjin UniversityTianjin 300072China School of Public Administration Tianjin University of CommerceTianjin 300134China

In this paper,we propose a regularized version of the generalized NCPfunction proposed by Hu,Huang and Chen[***.,230(2009),pp.69–82].Based on this regularized function,we propose a semismooth Newton method for solving nonlinear complementarity problems,where a non-monotone line search scheme is *** particular,we show that the proposed non-monotone method is globally and locally superlinearly convergent under suitable *** test the proposed method by solving the test problems from *** experiments indicate that this algorithm has better numerical performance in the case of p=5 andθ∈[0.25,075]than other cases.

关键词： Nonlinear complementarity problem non-monotone line search semismooth Newton method global convergence local superlinear convergence

Influence of Structural Parameters of Turbocharger Floating Bearing on Its Dynamic Characteristic Coefficients

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Journal of Beijing Institute of Technology 2017年第2期26卷 183-190页

作者： Junsheng Zhao Yuantong gu Shengxian Yi Xuelong lu School of Mechanical and Power Engineering North University of China School of Chemistry Physics and Mechanical EngineeringQueensland University of Technology

The structure parameters in an actual industrial production have a great influence on the coefficient of supercharger floating bearing dynamic characteristics,but there has been little systematic study so *** this paper,the influence of structural parameters of the turbocharger floating bearing on its dynamic characteristic coefficientsis systematically investigated based on the theories of hydrodynamic lubrication and *** influence of clearance ratio on eccentricity and the influence of internal to external radius ratios,and Sommerfeld number were analyzed.A new formula of responding characteristics of the oil film force caused by the displacement or velocity disturbance was deduced near an equilibrium in the steady *** the newly developed formula,the dynamic characteristic was studied for floating *** for change of oil film stiffness and damping was analyzed with the structural parameters of floating bearing such as radius ratios and *** has been found that the clearance ratio increases with eccentricity when the radius ratio is *** eccentricity decreases with the internal to external radius ratio of floating rings when the clearance ratio is *** absolute value of total principal stiffness and total main damping decrease with the clearance ratio and radius ratio of floating rings when the total cross damping is *** results and findings in this paper can contribute to nonlinear dynamics designs of turbocharger rotor-bearing systems.

关键词： turbocharger floating bearing structure parameters dynamic characteristic coefficient

In-situ polymerized nanosilica/acrylic/epoxy hybrid coating:Preparation,microstructure and properties

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Science China(Technological Sciences) 2009年第8期52卷 2204-2209页

作者： lu HongBin gu MinHao HUANG JianFeng HU Yong MENG XiangKang National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringNanjing UniversityNanjing 210093China

An in-situ polymerization method was employed to synthesize the nanosilica/acrylic/epoxy (SAE) hybrid coating on AISI 430 stainless steel (430SS), as compared with a traditional blending method. Mi- crostructures of the blending SAE hybrid coating (BC) and in-situ SAE hybrid coating (ISC) were characterized by transmission electron microscopy (TEM). Corrosion resistance of BC and ISC on 430SS was evaluated by the neutral salt spray test and potentiodynamic polarization technique. Failure mechanism of the BC on 430SS was suggested by the microstructures and corrosion behaviors. Serious aggregation of nanosilica particles in the BC impairs its structural uniformity and induces the flaws formation. These flaws in the BC initiates the failures of pitting, filiform corrosion and peeling which are accelerated by the O2 concentration cell and H+ self-catalysis in chlorine-containing moist environments. The ISC-coated 430SS shows a more advantageous corrosion resistance than that of the BC-coated. The ISC-coated 430SS can suffer the salt spray over 1000 h. Besides, it exhibits a high corrosion potential beyond 0.925 V and good passivation characteristics during the potentiodynamic polarization.

关键词： in-situ polymerization hybrid coating 430 stainless steel (430SS) corrosion resistance failure mechanism