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27篇 您的检索式:作者名="Lizhong HE"
    题名 作者 年代 出处 被引量
1Phylogenetic Relationships of the Genus Paramesotriton(Caudata: Salamandridae) with the Description of a New Species from Qixiling Nature Reserve, Jiangxi, Southeastern China and a Key to the species显示文摘The matrilineal genealogy of the genus Paramesotriton is hypothesized based on DNA sequences from mitochondrial NADH subunit two(ND2) and its flanking tRNAs(tRNATrp and a partial tRNAAla). The genealogy identifies a highly divergent, unnamed lineage from Qixiling Nature Reserve, Jiangxi, China and places it as the sister taxon of P. chinensis. The newly discovered population differs from other congeners by several features of external morphology including having large clusters of dark brown conical warts on the dorsum of the head, lateral surface of the body and dorsolateral ridges. Its intermittent dorsal vertebral ridge is the same color as other parts of the dorsum and tail narrows gradually from the base to the tip. Further, the new population differs from all congeners by an uncorrected P-distance of more than 9.38% in ND2. Consequently, we describe the new species of Asian warty newt(Salamandridae) as Paramesotriton qixilingensis sp. nov.Zhiyong YUAN Haipeng ZHAO Ke JIANG Mian HOU Lizhong HE Robert W.MURPHY Jing CHE 2014Asian Herpetological Research2014,5,2:7
2Numerical Simulation of Fluid and Heat Transfer in a Biological Tissue Using an Immersed Boundary Method Mimicking the Exact Structure of the Microvascular Network显示文摘The aim of this study is to develop a model of fluid and heat transfer in a biological tissue taking into account the exact structure of the related microvascular network,and to analyze the influence of structural changes of such a network induced by diabetes.A cubic region representing local skin tissue is selected as the computational domain,which in turn includes two intravascular and extravascular sub-domains.To save computational resources,the capillary network is reduced to a 1D pipeline model and embedded into the extravascular region.On the basis of the immersed boundary method(IBM)strategy,fluid and heat fluxes across a capillary wall are distributed to the surrounding tissue nodes by a delta function.We consider both steady and periodic blood pressure conditions at the entrances of the capillary network.Under steady blood pressure conditions,both the interstitial fluid pressure and tissue temperature around the capillary network are larger than those in other places.When the periodic blood pressure condition is considered,tissue temperature tends to fluctuate with the same frequency of the forcing,but the related waveform displays a smaller amplitude and a certain time(phase)delay.When the connectivity of capillary network is diminished,the capacity of blood redistribution through the capillary network becomes weaker and a subset of the vessel branches lose blood flow,which further aggravates the amplitude attenuation and time delay of the skin temperature fluctuation.Yuanliang Tang Lizhong Mu Ying He 2020Fluid Dynamics & Materials Processing2020,16,2:3
3Proteomic study participating the enhancement of growth and salt tolerance of bottle gourd rootstock-grafted watermelon seedlings显示文摘Yanjuan Yang Liping Wang Jing Tian Jing Li Jin Sun Lizhong He Shirong Guo Takafumi Tezuka 2012Plant Physiology and Biochemistry2012,,:2
4Freeze-thaw processes of active-layer soils in the Nanweng'he River National Natural Reserve in the Da Xing'anling Mountains,northern Northeast China显示文摘The active-layer soils overlying the permafrost are the most thermodynamically active zone of rock or soil and play important roles in the earth-atmosphere energy system. The processes of thawing and freezing and their associated complex hydrothermal coupling can significantly affect variation in mean annual temperatures and the formation of ground ice in permafrost regions. Using soil-temperature and-moisture data obtained from the active layer between September 2011 and October 2014 in the permafrost region of the Nanweng'he River in the Da Xing'anling Mountains, the freeze-thaw characteristics of the permafrost were studied. Based on analysis of ground-temperature variation and hydrothermal transport characteristics, the thawing and freezing processes of the active layer were divided into three stages:(1) autumn-winter freezing,(2) winter freeze-up, and(3) spring-summer thawing. Variations in the soil temperature and moisture were analyzed during each stage of the freeze-thaw process, and the effects of the soil moisture and ground vegetation on the freeze-thaw are discussed in this paper. The study's results show that thawing in the active layer was unidirectional, while the ground freezing was bidirectional(upward from the bottom of the active layer and downward from the ground surface).During the annual freeze-thaw cycle, the migration of soil moisture had different characteristics at different stages. In general, during a freezing-thawing cycle, the soil-water molecules migrate downward, i.e., soil moisture transports from the entire active layer to the upper limit of the permafrost. In the meantime, freeze-thaw in the active layer can be significantly affected by the soil-moisture content and vegetation.RuiXia He HuiJun Jin XiaoLi Chang YongPing Wang LiZhong Wang 2018Research in Cold and Arid Regions2018,10,2:2
5Insight into multiple-triggering effect in DTSCRs for ESD protection显示文摘The diode-triggered silicon-controlled rectifier(DTSCR) is widely used for electrostatic discharge(ESD) protection in advanced CMOS process owing to its advantages, such as design simplification, adjustable trigger/holding voltage, low parasitic capacitance. However, the multiple-triggering effect in the typical DTSCR device may cause undesirable larger overall trigger voltage, which results in a reduced ESD safe margin. In previous research, the major cause is attributed to the higher current level required in the intrinsic SCR. The related discussions indicate that it seems to result from the current division rule between the intrinsic and parasitic SCR formed in the triggering process. In this letter, inserting a large space into the trigger diodes is proposed to get a deeper insight into this issue. The triggering current is observed to be regularly reduced along with the increased space, which confirms that the current division is determined by the parasitic resistance distributed between the intrinsic and parasitic SCR paths. The theoretical analysis is well confirmed by device simulation and transmission line pulse(TLP) test results. The reduced overall trigger voltage is achieved in the modified DTSCR structures due to the comprehensive result of the parasitic resistance vs triggering current, which indicates a minimized multipletriggering effect.Lizhong Zhang Yuan Wang Yize Wang Yandong He 2017Journal of Semiconductors2017,38,7:2
6Simultaneous enhancement of coercivity and electric resistivity of Nd-Fe-B magnets by Pr-Tb-Al-Cu synergistic grain boundary diffusion toward high-temperature motor rotors显示文摘To high-power permanent magnetic motors,it is critical for Nd-Fe-B magnets to maintain the desirable coercivity at high-temperature operating conditions.To address this,two approaches have been proven effective:(1)enhancing the room temperature coercivity;(2)reducing the eddy current loss.However,these two items are difficult to be simultaneously achieved.Here,the grain boundary diffusion(GBD)of the Pr-Tb-Al-Cu-based source is applied to enhance the coercivity and electric resistivity at room temperature from 1101 kA m-1 and 2.13×10–6Ωm to 1917 kA m-1 and 2.60×10–6Ωm,and those at 120°C from 384 kA m-1 and 4.31×10–6Ωm to 783 kA m-1 and 4.86×10–6Ωm,respectively.Such optimization is ascribed to the improved formation depth of Tb-rich 2:14:1 shells with large magnetocrystalline anisotropy and the increased intergranular Pr-based oxides with high electric resistivity,induced by the coordination effects of Tb and Pr,as proven by the atomic-scale observations and the first principles calculations.It thus results in the simultaneously improved output power and energy efficiency of the motor because of the combination of magnetic thermal stability enhancement and eddy current loss reduction,as theoretically confirmed by electromagnetic simulation.Jiayi He Jinwen Hu Bang Zhou Haoyang Jia Xiaolian Liu Zhenhua Zhang Lin Wen Lizhong Zhao Hongya Yu Xichun Zhong Xuefeng Zhang Zhongwu Liu 2023Journal of Materials Science & Technology2023,,23:1
7New superhard carbon phases between graphite and diamond显示文摘Chaoyu He Lizhong Sun Chunxiao Zhang Xiangyang Peng Kaiwang Zhang Jianxin Zhong 2012Solid State Communications2012,,16:1
8Influence of Clip Locations on Intraaneurysmal Flow Dynamics in Patient-specific Anterior Communicating Aneurysm Models with Different Aneurysmal Angle显示文摘To improve aneurysm treatment,this study examined the influence of clip locations on hemodynamic factors in patient-specific anterior communicating artery(ACoA)aneurysms with different aneurysmal angle.We proposed a simplified classification of ACoA aneurysms using aneurysmal angle,defined by the angle of pivot of the aneurysmal dome and the virtual two-dimensional plane created by both proximal A2 segments of anterior cerebral artery(ACA).ACoA aneurysms with three different aneurysmal angles,which are 15°,80°and 120°,were analyzed in our study.In this work,we obtained hemodynamics before and after clipping surgery with three clip locations based on clinical clipping strategies in three ACoA aneurysms with different aneurysm angles.Results showed that local high pressure occurs at impingement region of the ACoA aneurysm before clipping and new impingement region close to the clipping location after clipping treatment.For clipping the aneurysm with aneurysmal angle 15°and a wide neck,wall shear stress(WSS)distribution is more uniform when the clipping angle of two clips close to 180°comparing with other two angles.In addition,for clipping the aneurysm with aneurysmal angle 80°and 120°,local high pressure appears on new impingement region and high WSS distributes around the clipping location when the clip plane is normal to the direction of inflow of aneurysm from the dominance of A1 segment of ACA.Hence,we should avoid the impingement of inflow from the A1 segment and choose a favorable clipping location for the fastness of clip.The results of our study could preoperatively give a useful information to the decision of surgical plan.Lizhong Mu Qingzhuo Chi Changjin Ji Ying He Ge Gao 2018Computer Modeling in Engineering & Sciences2018,,8:1
9Global genome expression analysis of rice in response to drought and high-salinity stresses in shoot, flag leaf, and panicle显示文摘Junli Zhou Xiangfeng Wang Yuling Jiao Yonghua Qin Xigang Liu Kun He Chen Chen Ligeng Ma Jian Wang Lizhong Xiong Qifa Zhang Liumin Fan Xing Wang Deng 2007Plant Molecular Biology2007,,5:1
10Improved turn-on behavior in a diode-triggered silicon-controlled rectifier for high-speed electrostatic discharge protection显示文摘A conventional diode-triggered silicon-controlled rectifier(DTSCR) structure with a layout strategy for electrostatic discharge(ESD) protection is presented and confirmed in a 65-nm CMOS technology.The modified device is featured by a scaled-down trigger-diode string, which shortens its turn-on time using a variable scaling factor. To confirm the parasitic resistance adjustments of the modified DTSCR, transmission line pulsing(TLP)/very fast transmission line pulsing(VF-TLP) tests and simulations are performed on the device. Compared to a conventional DTSCR, this structure exhibits an improved turn-on speed and robustness, which are suitable for I/O protection of ESD events in the nanosecond range, particularly the charged-device model(CDM) event.Lizhong ZHANG Yuan WANG Yize WANG Xing ZHANG YANDong HE 2019Science China(Information Sciences)2019,62,6:1
11Haemodynamic Analysis of the Relationship between the Morphological Alterations of the Ascending Aorta and the Type A Aortic-Dissection Disease显示文摘Type A aortic dissection(AD)is one of the most serious cardiovascular diseases,whose risk predictors are controversial.The purpose of this research was to investigate how elongation accompanied by dilation of the ascending aorta(AAo)affects the relevant haemodynamic characteristics using image-based computational models.Five elongated AAos with different levels of dilation have been reconstructed based on the centerlines data of an elderly and an AD patient.Numerical simulations have been performed assuming an inflow waveform and a Windkessel model with three elements for all outflow boundaries.The numerical results have revealed that the elongation of AAo can disturb the systolic helical flow pattern between the root of AAo and the aortic arch.The helical flow inside the AAo starts to develop into a vortex flow when the elongated AAo becomes dilated.The vortex gives rise to a localized oscillatory shear index at the ostia of the brachiocephalic artery(BA)and the inner curve of the aortic arch.This study suggests that abnormal growth of AAo,especially accompanied by its moderate dilation,can be considered as morphological risk factors of AD.Qingzhuo Chi Huimin Chen Lizhong Mu Ying He Yong Luan 2021Fluid Dynamics & Materials Processing2021,17,4:1
12The effects of acid hydrolysis on protein biosurfactant molecular,interfacial, and foam properties : pH responsive protein hydrolysates 显示文摘Dwyer M D He Lizhong Michael James 2012Soft Matter2012,8,51:1
13Characterization of organic phases in the interlayer of montmorillonite using FTIR and 13 C NMR显示文摘Jianxi Zhu Hongping He Lizhong Zhu Xiaoyan Wen Feng Deng 2005Journal of Colloid And Interface Science2005,,1:1
14Characterization of organic phases in the interlayer of montmorillonite using FTIR and ^13C NMR显示文摘ZHU Jianxi HE Hongping ZHU Lizhong 2005Journal of Colloid and Interface Science2005,286,:1
15Crude Polysaccharide and Triterpene Content of Ganoderma Fruit Bodies at Different Stages of Development显示文摘Crude polysaccharide and triterpene levels were determined in the fruit bodies of eleven Lingzhi samples,designated as Ganoderma lucidum,G.capense and G.tsugae,harvested at four different stages of development: budding,elongation,maturation and senescence.In most cases,crude polysaccharide levels were highest at the budding stage,decreased during the elongation stage,increased again at maturation and were lowest at senescence.Triterpene levels generally remained relatively high during the first three developmental stages but were markedly lower at senescence.FU Lizhong WU Xueqian LI Mingyan LI Haibo WEI Hailong WU Qingqi CHENG Junwen HE Liang 2008食用菌学报2008,15,3:1
16Nuclear PKM2 expression predicts poor prognosis in patients with esophageal squamous cell carcinoma显示文摘Xuelin Zhang Chengzhi He Chunya He Baofu Chen Yanxia Liu Min Kong Chunguo Wang Lizhong Lin Yan Dong Haihui Sheng 2013Pathology - Research and Practice2013,,:1
17In-vitro experimental study on the fluid-structure interaction in an image-based flexible model with a lateral cerebral aneurysm显示文摘Aiming to experimentally investigate the effect of aspect ratio(AR)of image-based aneurysm on wall deformation oscillation under different pulsatile flow conditions with considering the fluid-structure interaction.In this study,three silicon aneurysm models with different AR(0.8,1.0,and 1.2)were constructed.It was found that the detected wall deformation oscillation of patient-specific aneurysm increased with pulsatile inflow frequency increases,which was greater and more obvious oscillation than that in the ideal lateral aneurysm.In addition,the maximum amplitude of wall deformations oscillation of the aneurysm at the dome during the systolic phase decrease and the oscillation of wall deformation become obvious as AR increases.These results could provide more knowledge about the effect of AR and pulsatile flow on the wall deformation of aneurysm and will be helpful for understanding the aneurysm rupture risk.Qingzhuo Chi Xinyu Li Sheng Chang Lizhong Mu Ying He Ge Gao 2019Medicine in Novel Technology and Devices2019,,3:0
18Grain boundary construction and properties enhancement for hot deformed(Ce,La,Y)-Fe-B magnet by a two-step diffusion process显示文摘The rare earth-iron-boron magnets based on high abundance rare earths(REs)show potential for costeffective permanent magnets but their hard magnetic properties have to be greatly improved.The grain boundary diffusion process(GBDP)is known as an effective way to improve the coercivity of Nd-Fe-B magnets,however,the conventional diffusion method faces a challenge for Ce-based magnets since there is no enough continuous GB layer as the diffusion channel.Here,a two-step(Nd-Cu doping followed by Nd-Cu diffusion)GBDP was introduced for hot deformed(Ce,La,Y)-Fe-B magnet,and the excellent magnetic properties ofμ0Hc=0.63 T,μ0Mr=0.68 T,and(BH)max=72.4 kJ/m^(3)were achieved.The Nd-Cu doping helps the formation of RE-rich GB layer,and then it acts as the diffusion channel for increasing the ef-ficiency of the subsequent Nd-Cu diffusion and results in the increased volume fraction of continuously distributed GB phase,whose paramagnetism was verified by 57Fe Mössbauer spectrometry.Those paramagnetic GB phases help to form the discontinuous domain walls,as observed by Lorentz transmission electron microscopy,and break the magnetic exchange coupling of RE2Fe14B grains.It thus contributes to the coercivity enhancement of the hot deformed magnet with two-step diffusion,which is further proved by micromagnetic simulation.This study proposes a potential technique to prepare anisotropic hot deformed(Ce,La,Y)-Fe-B magnet with high cost-performance.Xuefeng Liao Weiwei Zeng Lizhong Zhao Qing Zhou Jiayi He Wei Li Xiangyi Liu Hongya Yu Xiaolian Liu Haoyang Jia Jean-Marc Greneche Xuefeng Zhang Zhongwu Liu 2023Journal of Materials Science & Technology2023,,34:0
19Effects of size and location of distal tear on hemodynamics and wave propagation in type B aortic dissection显示文摘The type B aortic dissection(TBAD)is a perilous disease with high morbidity and mortality rates.The hemodynamics of TBAD in different scenarios has been widely studied by computational fluid dynamics(CFD)research.However,the flow pattern and wave propagation characteristics in the cardiovascular system with TBAD are not yet clear,and the effect of the distal tear is still unknown.In this work,a onedimensional(1D)cardiovascular system model coupling with a zero-dimensional(0D)lumped-parameter model is introduced to study the hemodynamics and wave propagation in the cardiovascular system.The results show that the proposed 0D-1D method well captures the oscillation and retrograde characteristics for the flow in the false lumen(FL),and the smaller distal tear damps the retrograde flow.Besides,the distal tear should also be paid attention to,and the wave intensity(WI)can be used as an access mark of the degree of the aortic dissection(AD).Huimin CHEN Qingzhuo CHI Ying HE Lizhong MU Yong LUAN 2022Applied Mathematics and Mechanics(English Edition)2022,43,9:0
20Study of Effect of Boundary Conditions on Patient-Specific Aortic Hemodynamics显示文摘Cardiovascular computational fluid dynamics(CFD)based on patient-specific modeling is increasingly used to predict changes in hemodynamic parameters before or after surgery/interventional treatment for aortic dissection(AD).This study investigated the effects of flow boundary conditions(BCs)on patient-specific aortic hemodynamics.We compared the changes in hemodynamic parameters in a type A dissection model and normal aortic model under different BCs:inflow from the auxiliary and truncated structures at aortic valve,pressure control and Windkessel model outflow conditions,and steady and unsteady inflow conditions.The auxiliary entrance remarkably enhanced the physiological authenticity of numerical simulations of flow in the ascending aortic cavity.Thus,the auxiliary entrance can well reproduce the injection flow fromthe aortic valve.In addition,simulations of the aortic model reconstructed with an auxiliary inflow structure and pressure control and the Windkessel model outflow conditions exhibited highly similar flow patterns and wall shear stress distribution in the ascending aorta under steady and unsteady inflow conditions.Therefore,the inflow structure at the valve plays a crucial role in the hemodynamics of the aorta.Under limited time and calculation cost,the steady-state study with an auxiliary inflow valve can reasonably reflect the blood flow state in the ascending aorta and aortic arch.With reasonable BC settings,cardiovascular CFD based on patient-specific ADmodels can aid physicians in noninvasive and rapid diagnosis.Qingzhuo Chi Huimin Chen Shiqi Yang Lizhong Mu Changjin Ji Ying He Yong Luan 2022Computer Modeling in Engineering & Sciences2022,,4:0
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