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Journal of Integrative Plant Biology 2009年第8期51卷 762-773页

作者： Dong-jie Jia Xi Cao Wei Wang Xiao-Yun Tan Xue-Qin zhang Li-qun Chen De Ye State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University Beijing 100193 China National Center for Plant Gene Research Beijing 100101 China

In flowering plants, male gametes are delivered to female gametophytes by pollen tubes. Although it is important for sexual plant reproduction, little is known about the genetic mechanism that controls pollen germination and pollen tube growth. Here we report the identification and characterization of two novel mutants, gnom-like 2-1 （gnl2-1） and gn12-2 in Arabidopsis thaliana, in which the pollen grains failed to germinate in vitro and in vivo. GNL2 encodes a protein homologous to the adenosine diphosphate-ribosylation factor-guanine nucleotide exchange factors, GNOM and GNL1 that are involved in endosomal recycling and endoplasmic reticulum-Golgi vesicular trafficking. It was prolifically expressed in pollen grains and pollen tubes. The results of the present study suggest that GNL2 plays an important role in pollen germination.

关键词： adenosine diphosphate-ribosylation factor-guanine nucleotide exchange factor Arabidopsis gametophyte GNL2 male gametophytedefective pollen.

Study Under AC Stimulation on Excitement Properties of Weighted Small-World Biological Neural Networks with Side-Restrain Mechanism

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Communications in Theoretical Physics 2007年第2期47卷 369-373页

作者： YUAN Wu-jie LUO Xiao-Shu JIANG Pin-qun College of Physics and Electronic Engineering Guangxi Normal University Guilin 541004 China Department of Physics Huaibei Coal Industry Teachers College Huaibei 235000 China

In this paper, we propose a new model of weighted small-world biological neural networks based on biophysical Hodgkin-Huxley neurons with side-restrain mechanism. Then we study excitement properties of the model under alternating current （AC） stimulation. The study shows that the excitement properties in the networks are preferably consistent with the behavior properties of a brain nervous system under different AC stimuli, such as refractory period and the brain neural excitement response induced by different intensities of noise and coupling. The results of the study have reference worthiness for the brain nerve electrophysiology and epistemological science.

关键词： small-world networks biological neural networks side-restrain mechanism Hodgkin-Huxley equations

Protective Effects of Phellodendron Species on Bone Health: A Novel Perspective on Their Potentials in Treating Osteoporosis and Osteoarthritis

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Chinese Journal of Integrative Medicine 2024年第4期30卷 379-384页

作者： XIN Li TAN Guo-yao zhang Qiang zhang qun Good Clinical Practice Development Guangdong Provincial Key Laboratory of Bone and Joint Degeneration DiseasesThe Third Affiliated Hospital of Southern Medical UniversityGuangzhou(510630)China Department of Pharmacy Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou(510120)China

Phellodendron(PN)species,traditionally used in Chinese medicine for centuries,hold promise as a potential treatment for osteoporosis(OP)and osteoarthritis(OA)due to their bioactive *** bioactive compounds,including berberine and palmatine,exhibit anti-inflammatory,antioxidant,and bone-protective properties,contributing to their potential therapeutic benefits in promoting bone health and preventing bone ***,challenges such as the need for standardized preparation and dosing,limited clinical studies,and potential interactions with other medications hinder their clinical ***,the rich history of PN species in Chinese medicine provides a promising foundation for future investigation into their potential as alternative treatments for OP and *** research is needed to fully understand the underlying mechanisms of action and explore the clinical implications of PN for bone health.

关键词： Phellodendron species bone health osteoporosis osteoarthritis review

Hohmann transfer via constrained optimization

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Frontiers of Information Technology & Electronic Engineering 2018年第11期19卷 1444-1458页

作者： Li XIE Yi-qun zhang Jun-yan XU State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control and Computer EngineeringNorth China Electric Power UniversityBeijing 102206China Beijing Institute of Electronic Systems Engineering Beijing 100854China

Inspired by the geometric method proposed by Jean-Pierre MAREC, we first consider the Hohmann transfer problem between two coplanar circular orbits as a static nonlinear programming problem with an inequality constraint. By the Kuhn-Tucker theorem and a second-order sufficient condition for minima, we analytically prove the global minimum of the Hohmann transfer. Two sets of feasible solutions are found: one corresponding to the Hohmann transfer is the global minimum and the other is a local minimum. We next formulate the Hohmann transfer problem as boundary value problems, which are solved by the calculus of variations. The two sets of feasible solutions are also found by numerical examples. Via static and dynamic constrained optimizations, the solution to the Hohmann transfer problem is re-discovered, and its global minimum is analytically verified using nonlinear programming.

关键词： Hohmann transfer Nonlinear programming Constrained optimization Calculus of variations

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牛结核病大罐奶抗体检测方法的评估

中国兽医杂志 2025年第1期61卷 75-79页

作者：陈颖钰张琼文王杰陈洁郭爱珍华中农业大学农业微生物资源发掘与利用全国重点实验室湖北武汉430070 华中农业大学动物科技学院动物医学院湖北武汉430070 华中农业大学湖北省兽医流行病学国际科技合作基地湖北武汉430070 华中农业大学国家动物结核病专业实验室(武汉) 湖北武汉430070 武汉市畜牧兽医科学研究所湖北武汉430065

为了评估大罐奶抗体检测是否可用于牛结核病的监测和预警,本试验利用酶联免疫吸附试验(ELISA)抗体检测法,对采自湖北省3家规模化奶牛场的85头奶牛的奶样与其对应的血样进行牛结核病抗体相关性分析;并通过检测27家奶牛场的大罐奶和2998... 详细信息

为了评估大罐奶抗体检测是否可用于牛结核病的监测和预警,本试验利用酶联免疫吸附试验(ELISA)抗体检测法,对采自湖北省3家规模化奶牛场的85头奶牛的奶样与其对应的血样进行牛结核病抗体相关性分析;并通过检测27家奶牛场的大罐奶和2998份个体奶样,分析大罐奶抗体水平与牛结核病流行率之间的相关性,建立基于大罐奶抗体检测的牛结核病的流行率预测模型;为确定不同效价阳性奶样在大罐奶中的检测能力,通过对不用阳性奶样进行稀释后混样检测,分析阳性奶样的效价和具有相近大罐奶S/P值的牛群中动物个体的抗体水平经验分布函数的差异性。结果显示,奶样和血样的牛结核病抗体检测结果之间具有高度一致性(Kappa=0.862)和相关性(Pearson相关系数r=0.976,P<0.01)。大罐奶抗体水平检测结果与牛结核病流行率之间具有中度相关性(Pearson相关系数r=0.681,P<0.01),流行率预测模型y=e4.7010+1.8784ln(x)-0.01(R2=0.8933)的预测能力为89.33%。分别稀释不同效价的阳性奶样,牛结核弱阳性奶样2倍稀释后阳性检出率为16.67%,中阳性奶样16倍稀释后阳性检出率为50.00%,高阳性奶样16倍稀释后阳性检出率为100%。结果表明,奶样可用于牛结核病的抗体检测,且大罐奶抗体水平与牛结核病流行率之间具有相关性,并可以通过模型预测牛结核病的流行率。大罐奶抗体检测可作为一项经济快捷的检测手段用于牛结核病的监测和预警,对于有着较高流行率或存在有强阳性个体的牛场,该检测方法敏感性更高,更为适用。

关键词：牛结核病大罐奶效价预测模型

Name disambiguation in AMiner

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Science China(Information Sciences) 2021年第4期64卷 214-216页

作者： Jing zhang jie TANG Information School Renmin University of China Department of Computer Science and Technology Tsinghua University

Name disambiguation, aiming at disambiguating who is who, is one of the fundamental problems of the online academic network platforms such as Google scholar, microsoft academic and AMiner. This study takes AMiner;), a free online academic search and mining system [1], as the example to explain how we deal with the name ambiguity problem under three different scenarios.

关键词： name disambiguation academic network graph embedding outlier detection clustering algorithm

A level set based segmentation approach for point-sampled surfaces

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第4期8卷 575-585页

作者： MIAO Yong-wei FENG jie-qing ZHENG Guo-xian PENG qun-sheng State Key Lab. of CAD ＆ CG Zhejiang University Hangzhou 310027 China College of Science Zhejiang University of Technology Hangzhou 310032 China

Segmenting a complex 3D surface model into some visually meaningful sub-parts is one of the fundamental problems in digital geometry processing. In this paper, a novel segmentation approach of point-sampled surfaces is proposed, which is based on the level set evolution scheme. To segment the model so as to align the patch boundaries with high curvature zones, the driven speed function for the zero level set inside narrow band is defined by the extended curvature field, which approaches zero speed as the propagating front approaches high curvature zone. The effectiveness of the proposed approach is demonstrated by our ex- perimental results. Furthermore, two applications of model segmentation are illustrated, such as piecewise parameterization and local editing for point-sampled geometry.

关键词： Point-samoled surfaces Segmentation Level set method Extended curvature field

In Situ Polymer Gel Electrolyte in Boosting Scalable Fibre Lithium Battery Applications

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Nano-Micro Letters 2024年第11期16卷 170-173页

作者： jie Luo Qichong zhang Key Laboratory of Multifunctional Nanomaterials and Smart Systems Chinese Academy of SciencesSuzhou Institute of Nano-Tech and Nano-Bionics398 Ruoshui RoadSuzhou 215123People’s Republic of China

The poor interfacial stability not only deteriorates fibre lithium-ion batteries(FLBs)performance but also impacts their scalable *** efficiently address these challenges,*** Peng team proposed a generalized channel structures strategy with optimized in situ polymerization technology in their recent *** resultant FLBs can be woven into different-sized powering textiles,providing a high energy density output of 128 Wh kg^(-1) and simultaneously demonstrating good durability even under harsh *** a promising strategy expands the horizon in developing FLB with particular polymer gel electrolytes,and significantly ever-deepening understanding of the scaled wearable energy textile system toward a sustainable future.

关键词： High-performance fibre lithium batteries Gel electrolytes Channel structures Stable interface Scalable application

Geophysical implications for the formation of the Tamu Massif–the Earth's largest single volcano–within the Shatsky Rise in the northwest Pacific Ocean

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Science Bulletin 2017年第1期62卷 69-80页

作者： Jinchang zhang jie Chen Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Key Laboratory of Marine Mineral Resources Ministry of Land and Resources South China Sea Institute of Planning and Environmental Research State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas State Oceanic Administration Key Laboratory of Integrated Marine Monitoring and Applied Technologies for Harmful Algal Blooms State Oceanic Administration

Recent geophysical research programs survey the Tamu Massif within the Shatsky Rise oceanic plateau in the northwest Pacific Ocean to understand the formation of this immense volcano and to test the forma- tion hypotheses of large igneous province volcanism. Massive sheet basalt flows are cored from the Tamu Massif, implying voluminous eruptions with high effusion rates. Seismic reflection data show that the Tamu Massif is the largest single volcano on Earth, characterized by a central volcanic shield with low- gradient flank slopes, implying lava flows emanating from its center and spreading massive area on the seafloor. Velocity model calculated from seismic refraction data shows that crustal thickness has a negative correlation with average velocity, implying a chemically anomalous origin of the Tamu Massif. Seismic refraction and reflection data reveal a complete crustal structure across the entire vol- cano, featured by a deep crust root with a maximum thickness of -30 kin, and Moho geometry is consis- tent with the Airy lsostasy. These recent findings provide evidence for the two end-member formation models： the mantle plume and the plate boundary, Both are supported by some results, but both are not fit with some either. Consequently, plume-ridge interaction could be a resolution that awaits future investigations.

关键词： Oceanic plateauLarge igneous province Plume-ridge interaction Marine geophysics Plate tectonics

Application of RBF-PID to MN-AGC in Hot Continuous Rolling 32

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Application of RBF-PID to MN-AGC in Hot Continuous Rolling