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Habitat Suitability and Distribution Pattern Response to Global Climate Change in a Widespread Species,the Asiatic Toad(Bufo gargarizans)

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Asian Herpetological Research 2023年第2期14卷 138-146页

作者： liuyang YANG lixin HUANG Huabin ZHANG Pingshin LEE Naijing ZHANG Ruiqing CAI en li Tao PAN Xiaobing WU College of life Sciences Anhui Normal UniversityWuhu 241000AnhuiChina Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources Anhui Normal UniversityWuhu 241000AnhuiChina

The distribution and diversity of the species are closely related to the global *** the most widely distributed species of Bufonidae in China,the study of the distribution pattern and habitat suitability of the Asiatic toad under climate change can help us understand the reply pattern of Bufonidae habitat to climate ***,combined with the Maxent model and GIS technology,the effects of climate change on the distribution pattern and habitat suitability of the Asiatic toad were comprehensively *** results show that the rainfall during the wettest season(Bio16)and the mean temperature of the driest season(Bio9)have a considerable impact on the distribution of the Asiatic *** the next 30 to 50 years,across the overall spacial scale of the Chinese mainland,the habitat of the Asiatic toad will be primarily in the eastern part of China and less in south part,while its distribution area will expand to the midwest and northwest parts of ***,the area in which it can be distributed will be reduced and suitable habitat will shift to some regions of higher latitude and *** a word,we systematically analyzed the changes of the distribution pattern and habitat suitability of the Asiatic toad with climate change,and we aim to provide data on how climatic variation may impact amphibians.

关键词： barycenter migration climate change distribution Maxent the Asiatic toad

An Effective Green Porous Structural Adhesive for Thermal Insulating,Flame-Retardant,and Smoke-Suppressant Expandable Polystyrene Foam

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engineering 2022年第10期17卷 151-160页

作者： Meng-en li Hai-Bo Zhao Jin-Bo Cheng Ting Wang Teng Fu Ai-Ning Zhang Yu-Zhong Wang The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE)&State Key Laboratory of Polymer Materials engineering&National engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan) College of ChemistrySichuan UniversityChengdu 610064China

To develop an efficient way to overcome the contradiction among flame retardancy,smoke suppression,and thermal insulation in expanded polystyrene(EPS)foams,which are widely used insulation materials in buildings,a novel"green"porous bio-based flame-retard ant starch(FRS)coating was designed from starch modified with phytic acid(PA)that simultaneously acts as both a flame retardant and an *** porous FRS coating has open pores,which,in combination with the closed cells formed by EPS beads,create a hierarchically porous structure in FRS-EPS that results in superior thermal insulation with a lower thermal conductivity of 27.0 mW·(m·K)^(-1).The resultant FRS-EPS foam showed extremely low heat-release rates and smoke-production release,indicating excellent fire retardancy and smoke *** specific optical density was as low as 121,which was 80.6%lower than that of neat EPS,at *** FRS-EPS also exhibited self-extinguishing behavior in vertical burning tests and had a high limiting oxygen index(LOI)value of 35.5%.More interestingly,after being burnt with an alcohol lamp for 30 min,the top side temperature of the FRS-EPS remained at only 140℃with ignition,thereby exhibiting excellent fire *** analysis confirmed the intumescent action of FRS,which forms a compact phosphorus-rich hybrid barrier,and the phosphorus-containing compounds that formed in the gas phase contributed to the excellent flame retardancy and smoke suppression of *** novel porous biomass-based FRS system provides a promising strategy for fabricating polymer foams with excellent flame retardancy,smoke suppression,and thermal insulation.

关键词： Biomass porous coating Expanded polystyrene foam Low thermal conductivity Flame retardancy Smoke suppression

纳米生物活性玻璃在牙体硬组织再矿化作用中的研究进展

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赣南医学院学报 2024年第3期44卷 302-305页

作者：李佳晨黄雨梦李雨蕾张梓玮李恩光伍廷芸荆楚理工学院医学部湖北荆门448000

纳米生物活性玻璃作为一种生物活性材料,有利于牙体硬组织骨性结合,在其再矿化作用中起重要作用。研究发现纳米生物活性玻璃对牙体硬组织的再矿化效果优于传统的氟制剂。本文对纳米生物活性玻璃的结构及再矿化机制、在牙体硬组织各部分... 详细信息

纳米生物活性玻璃作为一种生物活性材料,有利于牙体硬组织骨性结合,在其再矿化作用中起重要作用。研究发现纳米生物活性玻璃对牙体硬组织的再矿化效果优于传统的氟制剂。本文对纳米生物活性玻璃的结构及再矿化机制、在牙体硬组织各部分再矿化作用的研究进展进行综述,以期为再矿化研究带来新思路,为今后的相关研究提供依据。

关键词：纳米生物活性玻璃牙体硬组织再矿化

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Giant nonlinear Hall effect in twisted bilayer WSe2

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National Science Review 2023年第4期10卷 97-104页

作者： Meizhen Huang Zefei Wu Jinxin Hu Xiangbin Cai en li liheng An Xuemeng Feng Ziqing Ye Nian lin Kam Tuen Law Ning Wang Department of Physics and Center for Quantum Materials The Hong Kong University of Science and Technology William Mong Institute of Nano Science and Technology The Hong Kong University of Science and Technology

The recently discovered nonlinear Hall effect(NHE) in a few non-interacting systems provides a novel mechanism for generating second-harmonic electrical Hall signals under time-reversal-symmetric conditions. Here, we introduce a new approach to engineering an NHE by using twisted moiré *** found that the twisted WSe2bilayer exhibited an NHE when the Fermi level was tuned to the moiré flat bands. When the first moiré band was half-filled, the nonlinear Hall signal exhibited a sharp peak with a generation efficiency that was at least two orders of magnitude greater than those obtained in previous experiments. We discuss the possible origins of the diverging generation efficiency in twisted WSe2based on resistivity measurements, such as moiré-interface-induced correlation effects and mass-diverging-type continuous Mot transition. This study demonstrates not only how interaction effects can combine with Berry curvature dipoles to produce novel quantum phenomena, but also the potential of NHE measurements as a new tool for studying quantum criticality.

关键词： nonlinear Hall effect moiré superlattice twisted bilayer WSe2 continuous Mott transition electron-electron correlation effect

Near real-time gravitational wave data analysis of the massive black hole binary with TianQin

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Science China(Physics,Mechanics & Astronomy) 2024年第7期67卷 175-186页

作者： Hong-Yu Chen Xiang-Yu Lyu en-Kun li Yi-Ming Hu MOE Key Laboratory of TianQin Mission TianQin Research Center for Gravitational Physics&School of Physics and AstronomyFrontiers Science Center for TianQinGravitational Wave Research Center of CNSASun Yat-sen University(Zhuhai Campus)Zhuhai 519082China

Space-borne gravitational wave(GW)detectors can detect the merger of massive black *** early warning and localization of GW events before merging can be used to inform electromagnetic telescopes and conduct multimessenger ***,this requires real-time data transmission and analysis *** geocentric orbit of the space-borne GW detector Tian Qin makes it possible to conduct real-time data *** this study,we develop a search and localization pipeline for massive black hole binaries(MBHBs)with Tian Qin under both regular and real-time data transmission *** demonstrate that,with real-time data transmission,MBHBs can be accurately localized on the *** the approaching merger,each analysis can be finished in only 40 *** an MBHB system at a distance of 1 Gpc,if we receive data every hour,then we can pinpoint its location to within less than 1 deg^(2)on the final day before the merger.

关键词： gravitational wave detectors and experiments black holes data analysis algorithms and implementation data management

Design of 1.9 GHz RF CMOS VCO

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The Journal of China Universities of Posts and Telecommunications 2009年第3期16卷 103-107页

作者： li en-ling WANG Xue SONG lin-hong YUAN Yong-xia YU Fa-da liU Man-cang School of Sciences XJ'an University of Technology Xi'an 710048 China

A voltage controlled oscillator （VCO） module is designed, which can be used for the third generation mobile communication （3G） system. The circuit is simulated by spectre radio frequency （RF） by TSMC 0.25 μm CMOS process. During the simulation, the performance parameters of the designed VCO are as follows： tuning range 1.804 GHz-2.039 GHz, phase noise - 136.457 dBc/Hz @1 MHz, - 146.045 dBc/Hz@3 MHz, supply voltage 2.5 V, voltage output rate of 0.8 V-2.6 V, power consumption 25 roW. The layout of the related circuit is drawn by the Virtuoso Layout Editor.

关键词： LC voltage controlled oscillator on-chip inductor on-chip varactor phase noise

Prediction of Protein Secondary Structure Using Multilayer Feed-forward Neural Networks

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Prediction of Protein Secondary Structure Using Multilayer F...

X-ray-induced Expression Changes of TNFSF4 Gene in Human Peripheral Blood

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作者： liU Jian-wei CHI Guang-hui li Hai-en liU Yuan LUO Xiong-lin Research Institute of Automation China University of Petroleum

ISBN: (纸本)9781467355322

Important progress has been achieved in predicting secondary structure of protein sequences using artificial neural network recently. However, most of the models they used were BP networks with single hidden layer. In this paper, we try to use feedforward neural network involving more hidden layers to train and test the data set. While it has better generation ability and higher accuracy rate than the network with single hidden layer, the time complexity to train the model is often high. Hence, we utilize the contrastive divergence algorithm to solve this problem, which give better initial values to the weights in the network. Then we adjust the weights in turns. Experiments show that our train strategy is more efficient than BP algorithm.

关键词： Prediction of Protein Secondary Structure multilayer feed-forward neural networks PSSM contrastive divergence.

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Biomedical and environmental Sciences 2014年第9期27卷 729-732页

作者： li Shi en GUO Fei WANG Ping HAN lin GUO Yan WANG Xi Ai li Jie LYU Yu Min College of Public Health Zhengzhou University Henan Institute of Occupational Medicine

This study examined ionizing radiation-induced tumor necrosis factor （ligand） superfamily, member 4 （TNFSF4） mRNA expression changes in human peripheral blood cells and their distribution in a normal population. The results showed that expression level of TNFSF4 mRNA exhibited a dose- dependent response after different irradiation doses, but that was independent of incubation time post-irradiation. Moreover, it was not affected by age and gender in 51 healthy donors. Our studies indicate that TNFSF4 can be considered as a candidate gene to develop a new biodosimeter.

关键词： mRNA X-ray-induced Expression Changes of TNFSF4 Gene in Human Peripheral Blood

步态分析用于膝骨性关节炎诊断与功能评定的研究进展

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生物医学工程与临床 2024年第2期28卷 281-286页

作者：李宏恩马恺石春花申玉坤李瑞霞张西正(审校) 长治医学院生物医学工程系山西长治046000 军事医学科学院后勤保障技术研究所天津300161

膝骨性关节炎是中老年群体患病率非常高的一种疾病。该病生理功能表现与生物力学参数密切相关,包括运动学参数、动力学参数、肌电活动参数等直接体现了膝骨性关节炎的症状发展。这些参数的研究对于膝骨性关节炎诊断和关节功能评定有非... 详细信息

膝骨性关节炎是中老年群体患病率非常高的一种疾病。该病生理功能表现与生物力学参数密切相关,包括运动学参数、动力学参数、肌电活动参数等直接体现了膝骨性关节炎的症状发展。这些参数的研究对于膝骨性关节炎诊断和关节功能评定有非常重要的临床意义。因此,笔者通过总结近年来国内外的研究文献,对步态分析技术的进展,以及步态分析应用在膝骨性关节炎生物力学参数评定进行探讨,着重从运动学特征参数、动力学特征参数和肌电活动特征参数等进行步态特征的研究,为膝骨性关节炎的临床诊断及疗效评估提供借鉴与参考。尽管步态分析研究在膝骨性关节炎的早期诊断、治疗评估中发挥了重要作用,但在中国的临床应用和研究仍处于初期阶段。此外,由于膝骨性关节炎致病机制和生理表征比较复杂,对于步态分析特征参数的选择、计算方法,以及技术本身的稳定性方面还需要持续深入研究和改进。

关键词：步态分析膝骨性关节炎生物力学诊断