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Feature detection of triangular meshes via neighbor supporting

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Journal of Zhejiang University-Science C(Computers and Electronics) 2012年第6期13卷 440-451页

作者： Xiao-chao WANG Jun-jie CAO Xiu-ping liU Bao-jun li Xi-quan SHI Yi-zhen SUN School of Mathematical Sciences Dalian University of TechnologyDalian 116024China State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering Mechanics Dalian University of TechnologyDalian 116024China State Key Laboratory of Structural Analysis for Industrial Equipment School of Automotive EngineeringFaculty of Vehicle Engineering and MechanicsDalian University of TechnologyDalian 116024China Department of Mathematical Sciences Delaware State UniversityDoverDE 19901USA

We propose a robust method for detecting features on triangular meshes by combining normal tensor voting with neighbor supporting. Our method contains two stages： feature detection and feature refinement. Firsts the normal tensor voting method is modified to detect the initial features, which may include some pseudo features. Then, at the feature refinement stage, a novel salient measure deriving from the idea of neighbor supporting is developed. Benefiting from the integrated reliable salient measure feature, pseudo features can be effectively discriminated from the initially detected features and removed. Compared to previous methods based on the differential geometric property, the main advantage of our method is that it can detect both sharp and weak features. Numerical experiments show that our algorithm is robust, effective, and can produce more accurate results. We also discuss how detected features are incorporated into applications, such as feature-preserving mesh denoising and hole-filling, and present visually appealing results by integrating feature information.

关键词： Feature detection Neighbor supporting Normal tensor voting Salient measure

quantitative detection of single amino acid polymorphisms by targeted proteomics

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分子细胞生物学报:英文版 2011年第5期3卷 309-315页

作者： Zhi-Duan Su liang Sun Dan-Xia Yu Rong-Xia li Huai-Xing li Zhi-Jie Yu quan-Hu Sheng Xu lin Rong Zeng Jia-Rui Wu Key Laboratory of Systems Biology Institute of Biochemistry and Cell BiologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China State Key Laboratory of Molecular Biology Institute of Biochemistry and Cell BiologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China Key Laboratory of Nutrition and Metabolism Institute of Nutritional SciencesShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China SIBS-Novo Nordisk Translational Research Centre for PreDiabetes Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China Hefei National Laboratory for Physical Sciences at Microscale and School of life Science University of Science and Technology of ChinaHefei 230026China

Single-nucleotide polymorphisms(SNPs)are recognized as one kind of major genetic variants in population ***,polymorphisms at the proteome level in population scale remain *** the present study,we named amino acid variances derived from SNPs within coding regions as single amino acid polymorphisms(SAPs)at the proteome level,and developed a pipeline of nontargeted and targeted proteomics to identify and quantify SAP peptides in human *** absolute concentrations of three selected SAP-peptide pairs among 290 Asian individuals were measured by selected reaction monitoring(SRM)approach,and their associations with both obesity and diabetes were further *** work revealed that heterozygotes and homozygotes with various SAPs in a population could have different associations with particular *** addition,the SRM approach allows us for the first time to separately measure the absolute concentration of each SAP peptide in the heterozygotes,which also shows different associations with particular traits.

关键词： single amino acid polymorphism(SAP) proteomics selected reaction monitoring(SRM) diabetes obesity

Regulating single-atom Mn sites by precisely axial pyridinic-nitrogen coordination to stabilize the oxygen reduction

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Journal of Energy Chemistry 2023年第5期80卷 542-552,I0012页

作者： Yuan Qin Chaozhong Guo Zihao Ou Chuanlan Xu Qi Lan Rong Jin Yao liu Yingchun Niu quan Xu Yujun Si Honglin li Chongqing Key Laboratory of Materials Surface&Interface Science Chongqing University of Arts and SciencesChongqing 402160China School of Chemistry and Chemical Engineering Chongqing University of TechnologyChongqing 400054China College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 401331China State Key Laboratory of Heavy Oil Processing Beijing Key Laboratory of Biogas Upgrading UtilizationChina University of Petroleum-BeijingBeijing 102249China College of Chemistry and Environmental Engineering Sichuan University of Science and EngineeringZigong 643000SichuanChina School of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China

Designing single-atom catalysts for oxygen reduction reaction(ORR)are fashionable but challenging to boost the zinc-air battery *** enhanced ORR activity by manganese(Mn)singleatom catalysts can be achieved by accurately regulating the coordination number of isolated Mn *** calculations indicate that the single Mn-N5sites possess lower free energy barrier and higher oxygen adsorption performance than single Mn-N4sites to accelerate the ORR *** to it,here we synthesize an atomically dispersed Mn-N5catalyst by precisely axial coordination of pyridinic-N doped into two-dimensional(2D)porous nanocarbon sheets(~3.56 nm thickness),which reveals outstanding catalytic activity and ultrahigh stability for the ORR in zinc-air battery owing to the inhomogeneous charge distribution of Mn-N5sites compared to the conventional single-site Mn-N4catalyst and Pt/*** work gives a new strategy for in situ regulating the electronic structure of metal single-atoms and further promoting the overall ORR performance in energy systems.

关键词： Single-atom manganese catalyst Mn-N5 active moiety Oxygen reduction reaction,Coordination number Axial pyridinic-nitrogen coordination

多时间尺度下电力消费碳排放区域动态演进及收敛性分析

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西北师范大学学报（自然科学版） 2024年第1期60卷 97-105页

作者：师玮郑雅丽杨家鹏沙智泉张国炜西北师范大学地理与环境科学学院甘肃兰州730070

为了协调推进全国及各重大战略区域的减排降碳工作,加快实现碳达峰和碳中和的目标,通过碳核算技术指南法对区域电力消费碳排放量进行核算,并应用泰尔指数分析区域间的碳排放差异.在此基础上,使用三维非参数核密度估计法研究区域电力消... 详细信息

为了协调推进全国及各重大战略区域的减排降碳工作,加快实现碳达峰和碳中和的目标,通过碳核算技术指南法对区域电力消费碳排放量进行核算,并应用泰尔指数分析区域间的碳排放差异.在此基础上,使用三维非参数核密度估计法研究区域电力消费碳排放量的动态演变特征,并通过变异系数和空间面板模型进行σ收敛和绝对β收敛分析.研究以甘肃省为例,结果表明,甘肃省电力消费碳排放总体呈上升趋势,同时各地区之间的差异逐渐减小;在动态演进方面,随着时间推移区域内部的两极分化特征整体趋于减弱,差异化程度逐渐降低;在收敛特性方面,各时间尺度下均不存在σ收敛,但均存在绝对β收敛.

关键词：电力消费碳排放动态演进收敛性多时间尺度

Improvement of Water Sensitivity of Macro-defect-free Cement Based Composites with Cross Coupling Agent

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Journal of Wuhan University of Technology(Materials Science) 2001年第2期16卷 25-30页

作者：李北星 Dept. of Hydroelectric Engineering Wuhan University Wuhan 430072 China

The enhancement of interface bonding between cement and polymerand the structural reticula- tion of the water-soluble polymer areproposed to minimize the shortening of the mechanical properties ofmacro-de- fect-free(MDF)cement based composites at high relativehumidity. The MDF composites incorporated with vari- ouscross-coupling agents studied experimentally. The results show thatthe MDF composites modified with small amounts of cross-couplingagent had raised mechanical properties, but it is more important thatthe modified MDF composites had a significant increase in waterresistance compared to the original one.

关键词： macro-defect-free(MDF)cement based composites cross-coupling agent α-alumina

LATS1 K751 acetylation blocks activation of Hippo signalling and switches LATS1 from a tumor suppressor to an oncoprotein

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Science China(life Sciences) 2022年第1期65卷 129-141页

作者： Siyuan Yang Weizhi Xu Cheng liu Jiaqi Jin Xueying li Yuhan Jiang Lei zhang Xianbin Meng Jun zhan Hongquan zhang Department of Human Anatomy Histology and EmbryologyMOE Key Laboratory of Carcinogenesis and Translational Research and State Key Laboratory of Natural and Biomimetic DrugsPeking University Health Science CenterBeijing 100191China MOE Key Laboratory of Bioinformatics School of Life SciencesTsinghua UniversityBeijing 100084China

Large tumor suppressor 1(LATS1)is the key kinase controlling activation of Hippo signalling ***-translational modifications of LATS1 modulate its kinase ***,detailed mechanism underlying LATS1 stability and activation remains *** we report that LATS1 is acetylated by acetyltransferase CBP at K751 and is deacetylated by deacetylases SIRT3 and *** at K751 stabilized LATS1 by decreasing LATS1 ubiquitination and inhibited LATS1 activation by reducing its ***,LATS1 acetylation resulted in inhibition of YAP phosphorylation and degradation,leading to increased YAP nucleus translocation and promoted target gene ***,LATS1-K751 Q,the acetylation mimic mutant potentiated lung cancer cell migration,invasion and tumor growth,whereas LATS1-K751 R,the acetylation deficient mutant inhibited these *** together,we demonstrated a previously unidentified post-translational modification of LATS1 that converts LATS1 from a tumor suppressor to a tumor promoter by suppression of Hippo signalling through acetylation of LATS1.

关键词： LATS1 acetylation LATS1 activation and inhibition Hippo signalling pathway lung adenocarcinoma

校园绿地秋季不同活动空间保健因子变化特征及综合评价

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林业与环境科学 2024年第4期40卷 9-19页

作者：郭云丹于耀泓邱权何茜苏艳李吉跃华南农业大学林学与风景园林学院广东广州510642

为了给华南地区校园师生及城市居民游憩出行场所与时间以及校园绿色空间设计提供科学依据,研究于2022年9—10月,同步观测华南农业大学内5种活动空间(林荫型、临水型、草坪型、行道树型以及广场型)的保健因子。结果表明,5种空间内的小气... 详细信息

为了给华南地区校园师生及城市居民游憩出行场所与时间以及校园绿色空间设计提供科学依据,研究于2022年9—10月,同步观测华南农业大学内5种活动空间(林荫型、临水型、草坪型、行道树型以及广场型)的保健因子。结果表明,5种空间内的小气候日变化均呈倒“V”形,除广场型处于Ⅲ级不舒适水平外,其他4种空间均达到Ⅱ级舒适水平;空气负离子质量浓度日变化呈“双峰型”,林荫型空间空气负离子质量浓度达Ⅳ级保健浓度,其他4种空间均处于Ⅴ级允许浓度;空气颗粒物(PM_(2.5)和PM_(10))质量浓度日变化呈“U”型,林荫型空间达到环境空气质量Ⅰ级标准。不同空间综合保健功能排序为林荫型>临水型>行道树型>草坪型>广场型,此外林荫型空间保健功能在上午10:00时和下午16:00—18:00时空间综合保健指数达到峰值,因此建议校园师生此时段前往郁闭度较高的林荫型空间健身游憩。

关键词：校园绿地变化特征综合保健评价人体舒适度空气负离子浓度空气颗粒物浓度

Output Enhancement of a THz Wave Based on a Surface-Emitted THz-Wave Parametric Oscillator

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Chinese Physics Letters 2011年第11期28卷 103-105页

作者： li Zhong-Yang YAO Jian-quan XU De-Gang BING Pi-Bin ZHONG Kai North China University of Water Resources and Electric Power Zhengzhou 450011 College of Precision Instrument and Opto-electronics Engineering Institute of Laser and Opto-electronicsTianjin UniversityTianjin 300072

High-power nanosecond pulsed THz-wave radiation is achieved via a surface-emitted THz-wave parametric *** MgO:liNbO3 crystal with large volume is used as the gain ***-wave radiation from 1.084 THz to 2.654 THz is *** maximum THz-wave average power is 5.8W at 1.93 THz when the pump energy is 84 mJ,corresponding to a energy conversion efficiency of 6.9×10^(−6).The polarization characteristics of THz wave are *** the experiments the radiations of the first-order and the second-order Stokes wave are observed.

关键词： polarization pump wave

Microbial Community in the Forestomachs of Alpacas (Lama pacos) and Sheep (Ovis aries)

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Journal of Integrative Agriculture 2013年第2期12卷 314-318页

作者： PEI Cai-xia liU Qiang DONG Chang-sheng li Hong-quan JIANG Jun-bing GAO Wen-jun College of Animal Sciences and Veterinary Medicines Shanxi Agricultural University

Four 2-yr old alpacas （（48±2.3） kg） and four 2-yr old sheep （（50±1.7） kg） were used to study the pH and microbial community of forestomach from alpacas （Lama pacos） and sheep （Ovis aries） fed fresh alfalfa as the sole forage at low altitude （793 m）. The forestomach fluid was taken anaerobically via the esophagus. The electric pH meter and quantitative polymerase chain reaction systems were used to study the the pH and microbial community of forestomach. The results showed that the mean pH of forestomach fluid from alpacas was higher than that from sheep （P〈0.01）. The percentages of methanogens and Ruminococcusflavefaciens to total bacterial were lower in the forestomach of alpacas than that in the rumen of sheep, while the percentage of fungi and Fibrobacter succinogenes were higher. The percentage of protozoa was similar in the forestomach of alpacas and sheep. These differences can partly explain the reason that alpacas were lower methane production than sheep.

关键词： forestomach microbial community alpacas sheep alfalfa