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Comp.rative study of oxidation ability between boron-dop.d diamond (BDD) and lead oxide (p.O_2) electrodes

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International Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 589-593页

作者： Jun-jun Wei Xiu-p.ng zhu Fan-xiu L Jin-ren Ni Dep.rtment of Environmental Engineering Peking University Beijing 100871 China Dep.rtment of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

The electrochemical oxidation cap.bilities of two high-p.rformance electrodes,the boron-dop.d diamond film on Ti （Ti/BDD） and the lead oxide film on Ti （Ti/p.O2）,were *** radicals （·HO） generated on the electrode surface were detected by using p.nitrosodimethylaniline （RNO） as the trap.ing *** oxidation measurements,including the chemical oxygen demand （COD） removal and the current efficiency （CE）,were carried out via the degradation of p.nitrop.enol （p.p. under the galvanostatic *** results indicate that an indirect reaction,which is attributed to free hydroxyl radicals with high activation,conducts on the Ti/BDD electrode,while the absorbed hydroxyl radicals generated at the Ti/p.O2 surface results in low degradation *** to quick mineralization which combusts p.p.to CO2 and H2O absolutely by the active hydroxyl radical directly,the CE obtained on the Ti/BDD electrode is much higher than that on the Ti/p.O2 electrode,notwithstanding the number of hydroxyl radicals p.oduced on p.O2 is higher than that on the BDD surface.

关键词： thin films diamond films lead oxide born dop.ng hydroxyl radicals chemical oxygen demand (COD) oxidation

Detection, Estimation and Comp.nsation of Ionosp.eric Effect on SAR Interferogram Using Azimuth Shift

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Journal of Geodesy and Geoinformation Science 2022年第1期5卷 14-24页

作者： Wu zhu Yang LEI Quan SUN School of Geology Engineering and Geomatics Chang’an UniversityXi’an 710054China Key Laboratory of Western China’s Mineral Resource and Geological Engineering Ministry of EducationXi’an 710054China

An increasing interest in the use of low frequency Synthetic Ap.rture Radar(SAR)systems,e.g.,L-and p.bands,makes the research of the ionosp.eric effects on SAR interferograms become urgent and *** the most p.onounced signature in interferograms,the ionosp.ere-induced azimuth streak was thoroughly investigated in this study through p.ocessing of the 19 L-band Advanced Land-Observing Satellite(ALOS)p.ased Array typ. L-band Synthetic Ap.rture Radar(p.LSAR)images over the Chongqing City,*** investigations show that the visible ionosp.ere-induced strip.-shap. azimuth shifts with the invariable direction of 26°E,113°N are observed in some interferometric *** these anomalous azimuth shifts to the International GNSS Service(IGS)final ionosp.eric p.oducts shows that the detected ionosp.ere-contaminated SAR images disp.ay the relatively large ionosp.eric variation with time during SAR satellite travelled through the study area,indicating a somewhat correlation between *** detecting the ionosp.ere-contaminated interferograms,we estimated the Ionosp.eric p.ase Streak(Ip.)based on an ap.roximate linear relationship.between Ip. and azimuth shift,and then removed them from the original *** corrected results show that ionosp.eric p.ase p.tterns are largely removed from the ionosp.ere-contaminated *** investigation indicates that the direction of the Ip. keep. ap.roximately constant in sp.ce and time,which p.ovides the p.tential chance to develop.methods to correct the ionosp.eric ***,this study once more p.oves that the ionosp.eric effect on SAR interferogram can be detected,estimated and corrected from azimuth shifts.

关键词： Synthetic Ap.rture Radar(SAR) Interferometric SAR(InSAR) ionosp.eric effect azimuth shift

p.ep.ration of SiC_p.Al_2O_3-Al Comp.sites by Directed Metal Oxidation

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Chinese Journal of Aeronautics 2006年第B12期19卷 47-50页

作者： LIN Ying YANG Hai-bo WANG Fen zhu Jian-feng School of Materials Science and Engineering Shaanxi University of Science ＆ Technology Xianyang 712081 China

SiCp.Al2O3-Al comp.sites were synthesized by means of direct metal oxidation method. The comp.sition and microstructures of the comp.sites were investigated using X-ray diffraction （XRD）, scanning electron microscop. （SEM） and metallurgical microscop.. The effects of technical p.rameters on the p.op.rties of the p.oduct were analyzed. The results indicate that the comp.site p.ssesses a dense microstructure, comp.sed of three interp.netrated p.ases. Of them, SiO2 layer p.ohibits the p.wdering of the comp.sites; Mg p.omotes the wetting and infiltration of the system and Si restricts the interfacial reaction while imp.oving the wetting ability between reinforcement and matrix.

关键词： SiCD/Al2O3-Al comp.sites: directed metal oxidation Al-Mg-Si alloy SiC reinforcement

V-disp.rity Based UGV Obstacle Detection in Rough Outdoor Terrain

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自动化学报 2010年第5期36卷 667-673页

作者： CONG Yang p.NG Jun-Jian SUN Jing zhu Lin-Lin TANG Yan-Dong State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 P.R. China Graduate University of Chinese Academy of Sciences Beijing 100049 P. R. China

This p.p.r p.esents a fast obstacle detection system based on stereo vision for unmanned ground vehicle(UGV) navigation in unstructured environment. In order to make the UGV adap.able to more comp.ex terrains,we p.op.se a new estimation method of the main ground disp.rity(MGD)from the V-disp.rity images. Then,by comp.ring the disp.rity of the MGD with local 3D reconstruction,a coarse-to-fine method to find and localize obstacles is introduced in the p.p.r. The obstacle detection system is tested p.actically on our UGV p.atform in some outdoor unstructured environments. The exp.rimental results validate the effcacy of our system

关键词： UGV 3D图像图像处理 MGD

ORIENTATION VARIANT SELECTION AND ITS EFFECTING FACTORS IN TITANIUM SHEET

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Acta Metallurgica Sinica(English Letters) 1996年第6期9卷 601-605页

作者： Z.S. zhu N.p.Chen J.L. Gu and M.G. Yan(1)Institute of Aeronautical Materials, p.O. Box 8115, Beijing 100095, China 2)Dep.rtment of Materials Science and Engineering, Tsinghua University, Beijing 100084, ) Beijing Inst of Aeronautical Materials Beijing China

By means of crystallite orientation distribution function (ODF) analysis, the influence on orientation variant selection of cold rolling reductions, recrystallization annealing and cooling rates during α→β→α cyclic p.ase transformation treatments in cold rolled titanium sheet has been investigated. The results show that, cold rolling reduction and annealing treatment both have a great effect on the formation of p.ase transformation *** variant selection occurs in cold rolled and recrystallization annealed titanium sheet which resulte in a more randomly distributed *** p.ase transformation texture formed α→β→α transformation is inherited after 3 cycles of α→β→α p.ase transformation. The cooling rates during p.ase transformation have little effect on orientation variant selection.

关键词： texture titanium p.ase transformation orientation variant selection ODF

Screening of genes of secreting acetic acid from Asp.rgillus niger H1 to imp.ove p.osp.ate solubilization

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Journal of Integrative Agriculture 2017年第9期16卷 2110-2114页

作者： LIU Xue zhu Chang-xiong Frank Delvigne GONG Ming-bo Institute of Agricultural Environment and Sustainable Develop.ent Chinese Academy of Agricultural SciencesBeijing 100081P.R.Chin a Universite de Liege Gembloux Agro-Bio TechUnite de Bio-lndustriesGembloux 5030Belgium Key Laboratory of Microbial Resources Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China

A p.imary cDNA library of Asp.rgillus niger H1 was constructed using the switching mechanism at the 5′ end of the RNA transcrip.（SMART） technique. A total of 169 clones exhibited halos when grown on tricalcium p.osp.ate medium, and the H-46 clone disp.ayed a clear halo. The full-length c DNA of the clone H-46 clone was 1 407 bp.in length with a comp.ete op.n reading frame（ORF） of 816 bp. and it encoded a p.otein that contained 272 amino acids. Multip.e alignment analysis revealed a high degree of homology between the ORFs of the H-46 clone and the Bax inhibitor family（BI-1-like） p.oteins of other fungi. Acetic acid was secreted by Escherichia coli DH5α that exp.ess the BI-1-like gene. The level attained was 492.52 mg L^（-1）, which was associated with the release of 0.212 mg m L^（-1） of soluble p.osp.ate at 28 h. These results showed that the heterologous exp.ession of BI-1-like genes in Eschericha coli DH5α increased the secretion of acetic acid by altering the membrane p.rmeability and enhancing the solubility of p.osp.ate（p..

关键词： p.osp.ate solubilisation Asp.rgillus niger acetic acid

WACp.:A Neural Network for p.eumonia Diagnosis

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Comp.ter Systems Science & Engineering 2023年第4期45卷 21-34页

作者： Shui-Hua Wang Muhammad Attique Khan Ziquan zhu Yu-Dong Zhang School of Comp.ting and Mathematical Sciences University of LeicesterLeicesterLE17RHUK Dep.rtment of Comp.ter Science HITEC University TaxilaTaxilaPakistan

Community-acquired p.eumonia(CAp.is considered a sort of p.eumonia develop.d outside hosp.tals and *** diagnose community-acquired p.eumonia(CAp.more efficiently,we p.op.sed a novel neural network *** introduce the 2-dimensional wavelet entrop.(2d-WE)layer and an adap.ive chaotic p.rticle swarm op.imization(ACp.algorithm to train the feed-forward neural *** ACp.uses adap.ive inertia weight factor(AIWF)and Rossler attractor(RA)to imp.ove the p.rformance of standard p.rticle swarm *** final combined model is named WE-layer ACp.based network(WACp.),which attains a sensitivity of 91.87±1.37%,a sp.cificity of 90.70±1.19%,a p.ecision of 91.01±1.12%,an accuracy of 91.29±1.09%,F1 score of 91.43±1.09%,an MCC of 82.59±2.19%,and an FMI of 91.44±1.09%.The AUC of this WACp. model is *** find that the maximum dep.sition level chosen as four can obtain the best *** demonstrate the effectiveness of both AIWF and ***,this p.op.sed WACp. is efficient in diagnosing CAp.and sup.rior to six state-of-the-art *** model will be distributed to the cloud comp.ting environment.

关键词： Wavelet entrop. community-acquired p.eumonia neural network adap.ive inertia weight factor rossler attractor p.rticle swarm op.imization

IBX Oxidation of Benzenedimethanols in the p.esence of Cucurbit[8]uril

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中国化学:英文版 2015年第5期33卷 545-549页

作者： Hang Cong Qiuju Chen Qingxia Geng zhu Tao Takehiko Yamato Key Laboratory of Macrocyclic and Sup.amolecular Chemistry of Guizhou p.ovince Guizhou UniversityGuiyangGuizhou 550025China Dep.rtment of Ap.lied Chemistry Faculty of Science and EngineeringSaga UniversityHonjo-machilSaga 840-8502Japan

The cucurbit[8]uril (Q[8]) mediated oxidation of benzenedimethanols with o-iodoxybenzoic acid (IBX) inaqueous solution has been investigated, and the results reveal the sup.amolecular catalysis dep.nds on the electronicand geometric structure of substrate. In the cases of o-benzenedimethanol (1a) and m-benzenedimethanol (1b), theIBX oxidation could be obviously enhanced by the addition of Q[8] at different extent. There is no observation ofthe catalytic activity of Q[8] when p.benzenedimethanol (1c) is subjected to the IBX oxidation. The additionamount of Q[8] is discussed herein, and the addition of more than 10% mol catalyst cannot imp.ove the oxidationmuch more. The investigation of host-guest interactions by isothermal titration calorimetry imp.ies the sup.amolecularcatalysis is related to the formation of comp.exes between benzenedimethanols and cucurbit[8]uril.

关键词： cucurbituril oxidation sup.amolecular catalysis benzenedimethanol o-iodoxybenzoic acid

Neuroendocrine carcinoma of the breast:a review of 126 cases in China

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Chinese Journal of Cancer 2017年第9期36卷 444-447页

作者： Yiqun Li Feng Du Wenjie zhu Binghe Xu Dep.rtment of Medical Oncology National Cancer Centre/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021P.R.China

Neuroendocrine carcinoma of the breast (NECB) accounts for ap.roximately 0.3%-0.5% of all breast cancers [1, 2]. Due to the rarity of NECB, current understanding of this disease in China is limited to case rep.rts and small case series, and large data analysis is still lacking. Therefore, we conducted the most comp.ehensive literature search to date, aiming to analyze the clinicop.thologic characteristics as well as treatment and outcome of NECB in the Chinese p.p.lation.

关键词： NECB Chinese p.p.lation