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Nest survival rate of Reeves＇s pheasant(Syrmaticus reevesii) based on artificial nest experiments

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Zoological Research 2017年第1期38卷 49-54页

作者： Xu Luo Yu-Ze Zhao jing Ma jian-Qiang Li ji-liang Xu School of Nature Conservation Beijing Forestry University Beijing 100083 China

To explore the nest survival rate of Reeves＇ s pheasant（Syrmaticus reevesii） and the nest-site factors that affect it, we conducted artificial nest experiments with reference to natural nests at Dongzhai National Nature Reserve（DNNR）, Henan Province and Pingjingguan, Hubei Province from April to June 2014 simulating the situation in its early and later breeding season. We also determined distance characteristics of the nest sites by Arc GIS 10.0. Nest survival models were constructed in Program MARK for data analysis. Results indicated that in the early breeding season, the apparent survival rate（ASR） in DNNR（52.4%） was significantly greater than that in Pingjingguan（13.5%）, and the ASR in the later breeding season in DNNR（26.7%） was not indistinctively correlated with Pingjingguan（3.2%）. The daily survival rate（DSR） in the later breeding season was 93.8% in DNNR and 92.0% in Pingjingguan, respectively. The DSRs were both negatively correlated with nest distance to forest edges and settlements. The DSR in Pingjingguan was positively correlated with nest distance to paths and negatively correlated with nest distance to water sources. However, the DSR in DNNR was negatively correlated with nest distance to paths but positively correlated with nest distance to water sources.

关键词： Reeves's pheasant SyrmaUcus reevesfi Nest survival rate Artificial nest experiments.

Determination of Enantiomeric Compositions of Tryptophan by Chemometric Analysis of the Fluorescence Spectra of Bovine Serum Albumin Receptor-ligand Mixtures

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Chinese Chemical Letters 2006年第12期17卷 1599-1602页

作者： Yun Xia WANG Fang ZHANG jing liang Hua LI ji Lie KONG Department of Chemistry Fudan University Shanghai 200433 Department of Chemistry Northwest University Xi＇an 710069 Institute of Analytical Science Northwest University Xi＇an 710069

In this work, a novel method was constructed to determine the enantiomeric composition of tryptophan （Trp） by bovine serum albumin （BSA） based on the fluorescence spectra of the receptor-ligand mixtures coupled with partial least squares （PLS-1） analysis. As a result the enantiomeric composition of Trp was accurately determined.

关键词： Bovine serum albumin tryptophan PLS-1 fluorescence spectrophotometry.

Conflict-free Connection Number and Independence Number of a Graph

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Acta Mathematicae Applicatae Sinica 2021年第2期37卷 278-286页

作者： jing WANG Meng ji School of Computer Engineering and Applied Mathematics Changsha UniversityChangsha 410022China Hunan Province Key Laboratory of Industrial Internet Technology and Security Changsha UniversityChang-sha 410022China College of Mathematical Science Tianjin Normal UniversityTianjin 300007China

An edge-colored graph G is conflict-free connected if any two of its vertices are connected by a path,which contains a color used on exactly one of its *** conflict-free connection number of a connected graph G,denoted by cf c(G),is defined as the minimum number of colors that are required in order to make G conflict-free *** this paper,we investigate the relation between the conflict-free connection number and the independence number of a *** firstly show that cf c(G)≤α(G)for any connected graph G,and give an example to show that the bound is *** this result,we prove that if T is a tree with?(T)≥(α(T)+2)/2,then cf c(T)=?(T).

关键词： edge-coloring conflict-free connection number independence number tree

The complex roles of m^(6)A modifications in neural stem cell proliferation, differentiation, and self-renewal and implications for memory and neurodegenerative diseases

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Neural Regeneration Research 2025年第6期20卷 1582-1598页

作者： Yanxi Li jing Xue Yuejia Ma Ke Ye Xue Zhao Fangliang Ge Feifei Zheng Lulu Liu Xu Gao Dayong Wang Qing Xia Department of Biochemistry and Molecular Biology College of Basic Medical SciencesHarbin Medical UniversityHarbinHeilongjiang ProvinceChina College of Basic Medical Sciences Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Basic Medical Institute Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Key Laboratory of Heilongjiang Province for Genetically Modified Animals Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Translational Medicine Research and Cooperation Center of Northern China Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Dongzhimen Hospital Beijing University of Chinese MedicineBeijingChina

N6-methyladenosine(m^(6)A), the most prevalent and conserved RNA modification in eukaryotic cells, profoundly influences virtually all aspects of mRNA metabolism. mRNA plays crucial roles in neural stem cell genesis and neural regeneration, where it is highly concentrated and actively involved in these processes. Changes in m^(6)A modification levels and the expression levels of related enzymatic proteins can lead to neurological dysfunction and contribute to the development of neurological diseases. Furthermore, the proliferation and differentiation of neural stem cells, as well as nerve regeneration, are intimately linked to memory function and neurodegenerative diseases. This paper presents a comprehensive review of the roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, as well as its implications in memory and neurodegenerative diseases. m^(6)A has demonstrated divergent effects on the proliferation and differentiation of neural stem cells. These observed contradictions may arise from the time-specific nature of m^(6)A and its differential impact on neural stem cells across various stages of development. Similarly, the diverse effects of m^(6)A on distinct types of memory could be attributed to the involvement of specific brain regions in memory formation and recall. Inconsistencies in m^(6)A levels across different models of neurodegenerative disease, particularly Alzheimer's disease and Parkinson's disease, suggest that these disparities are linked to variations in the affected brain regions. Notably, the opposing changes in m^(6)A levels observed in Parkinson's disease models exposed to manganese compared to normal Parkinson's disease models further underscore the complexity of m^(6)A's role in neurodegenerative processes. The roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, and its implications in memory and neurodegenerative diseases, appear contradictory. These inconsistencies may be a

关键词： Alzheimer's disease cell self-renewal central nervous system memory microglia nerve regeneration neurodegenerative diseases neurogenesis RNA methylation

Genetic dissection of yield-related traits in response to drought stress in common bean

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The Crop Journal 2023年第4期11卷 1097-1105页

作者： Lei Wu Yujie Chang Lanfen Wang liang ji Lin Peng Shumin Wang jing Wu Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Institute of Food Crops Xinjiang Academy of Agricultural SciencesUrumqi 830091XinjiangChina SXAU-ICS Joint Research Center of Minor Crops Shanxi Agricultural UniversityTaiyuan 030031ShanxiChina

Drought stress severely impairs common bean *** facilitating drought-resistance breeding in common bean,molecular markers were identified in a genome-wide level marker–trait association study.A panel of 210 common bean accessions showed large variation in 11 agronomic traits at the adult stage(plant height,pod number per plant,seed number per pod,seed number per plant,seed yield per plant,pod length,harvest index,pod harvest index,days to maturity,hundred-seed weight,and seed yield)under two water *** coefficient of variation ranged from 6.21% for pod harvest index to51.00% for seed number per plant under well-watered conditions,and from 4.05% for days to maturity to 40.72% for seed number per plant under drought *** a genome-wide association study,119quantitative-trait loci were associated with drought resistance,including 41 adjacent to known *** these loci,12 were found to be associated with at least two *** major loci were identified at Pv01 and Pv02.A set of candidate genes were found that encode MYBs,AREBs,WKRYs,and protein *** results reveal promising alleles that control drought resistance,shedding light on the genetic basis of drought resistance and accelerating future efforts for drought resistance improvement in common bean.

关键词： Common bean Drought resistance Adult stage GWAS

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宽带相控阵雷达孔径渡越与距离徙动联合校正

电光与控制 2025年第1期32卷 8-14页

作者：张亮杨静陈浩周必雷杜庆磊空军预警学院武汉430000 济南市教育局济南250000

宽带相控阵雷达探测高速运动目标时,目标回波快时间频率与空、时二维耦合,容易出现孔径渡越和距离徙动双重问题。针对该情况,提出一种联合校正方法:当雷达工作于窄发模式时,通过频域补偿和一维时间尺度(TS)进行解耦;当雷达工作于宽发模... 详细信息

宽带相控阵雷达探测高速运动目标时,目标回波快时间频率与空、时二维耦合,容易出现孔径渡越和距离徙动双重问题。针对该情况,提出一种联合校正方法:当雷达工作于窄发模式时,通过频域补偿和一维时间尺度(TS)进行解耦;当雷达工作于宽发模式时,通过二维TS进行解耦。针对雷达工作模式界定问题给出了明确条件。仿真结果表明,所提方法可有效解决孔径渡越、距离徙动引起的目标回波跨阵元、跨脉冲问题,联合校正后目标有效检测临界信噪比较理想状态损失不超过3 dB。

关键词：宽带雷达相控阵孔径渡越距离徙动联合校正时间尺度

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Nonlinear Performance of MEMS Vibratory Ring Gyroscope

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Acta Mechanica Solida Sinica 2021年第1期34卷 65-78页

作者： Feng liang Dong-Dong liang Ying-jing Qia College of Mechanical Engineering Yangzhou UniversityYangzhou225127China Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Engineering College of Mechanical Engineering and Applied ElectronicsBeijing University of TechnologyBeijing100124China

Micro-electro-mechanical system(MEMS)gyroscopes are an important sort of inertial sensor for identifying parameters of spinning structures,such as the spinning speed and angular deviation,based on the Coriolis *** this paper,the nonlinear mechanism of MEMS vibratory ring gyroscopes is analyzed by applying a fully coupled nonlinear model,in which the gyroscopic coupling and geometrically and structurally nonlinear couplings are all taken into *** coupled differential equations governing the drive and sense motions are established via the Lagrangian *** simulation is conducted,and the key nonlinear components and energy transfer behaviors between the drive and sense modes are *** is revealed that the cubic rigidity nonlinearity is another significant factor leading to the coupling between the drive and sense modes other than the gyroscopic *** analysis is also carried out by using the method of multiple *** nonlinear frequency-amplitude responses of the drive and sense vibrations are obtained,and comprehensive parametric studies are *** significant effects of system damping,excitation amplitude,drive amplitude and spinning speed on the responses are discussed,which will facilitate to improve the nonlinear performance and sensitivity of the gyroscope.

关键词： MEMS vibratory ring gyroscope Nonlinear performance Drive mode Sense mode Method of multiple scales

Low thermal conductivity and anisotropic thermal expansion of ferroelastic(Gd_(1−x)Y_(x))TaO_(4) ceramics

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Journal of Advanced Ceramics 2022年第11期11卷 1696-1713页

作者： Chenkai QU Lin CHEN liang LV Yuncheng WANG Xiaolan ji Haitao YUN Chaoqun SU jing FENG Faculty of Material Science and Engineering Kunming University of Science and TechnologyKunming 650093China AECC South Industry Co. Ltd.Zhuzhou 412000China

In this paper,(Gd_(1−x)Y_(x))TaO_(4) ceramics have been fabricated by solid-phase synthesis *** sample was found to crystallize in a monoclinic phase by X-ray diffraction(XRD).The properties of(Gd_(1−x)Y_(x))TaO_(4) were optimized by adjusting the ratio of Gd/Y.(Gd_(1−x)Y_(x))TaO_(4) had a low high-temperature thermal conductivity(1.37–2.05 W·m^(−1)·K^(−1)),which was regulated by lattice *** phase transition temperature of the(Gd_(1−x)Y_(x))TaO_(4) ceramics was higher than 1500℃.Moreover,the linear thermal expansion coefficients(TECs)were 10.5×10^(−6) K^(−1)(1200℃),which was not inferior to yttria-stabilized zirconia(YSZ)(11×10^(−6) K^(−1),1200℃).(Gd_(1−x)Y_(x))TaO_(4) had anisotropic thermal ***,controlling preferred orientation could minimize the TEC mismatch when(Gd_(1−x)Y_(x))TaO_(4) coatings were deposited on different substrates as thermal barrier coatings(TBCs).Based on their excellent properties,it is believed that the(Gd_(1−x)Y_(x))TaO_(4) ceramics will become the next generation of high-temperature thermal protective coatings.

关键词： thermal barrier coatings(TBCs) thermal conductivity high-temperature phase stability high-temperature X-ray diffraction(XRD) anisotropic thermal expansion

Selective Learning for Strategic Bidding in Uniform Pricing Electricity Spot Market

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CSEE Journal of Power and Energy Systems 2021年第6期7卷 1334-1344页

作者： Yueyong Yang Tianyao ji Zhaoxia jing School of Electric Power Engineering South China University of TechnologyGuangzhouChina

In an electricity market,power producers’profits are determined by the market price instead of the regulated ***,the producers should be cautious in strategic bidding,for which prediction-based approaches are widely used and have been proved effective for many ***,in a uniform pricing market,the market environment is so complicated,which is primarily due to the complexity of the participants’interaction,that even the strategies based on machine learning algorithms,which are generally considered as outstanding nonlinear prediction methods,may sometimes lead to unsatisfactory ***,a selective learning scheme for strategic bidding is proposed to ensure greater *** proposed scheme is based on an ensemble technique,where several machine learning algorithms serve as the underlying algorithms to predict the price and generate a bidding *** the clearing iteration progresses,the most fitting ones will be chosen to dominate the bidding *** the characteristics of the electricity market,the prediction method used in the selective learning scheme is modified to achieve higher *** studies are presented to demonstrate the effectiveness of the proposed scheme,which leads to more reasonable bidding behaviors and higher profits.

关键词： Selective learning electricity spot market machine learning strategic bidding uniform pricing