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TEGR: A comprehensive Ericaceae genome resource database

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Journal of Integrative Agriculture 2025年第3期 1140-1151页

作者： xiaojing wang Yunfeng Wei Zhuo Liu Tong Yu Yanhong Fu Xiaoming Song Institute of Agro-Bioengineering/The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in the Mountainous Region (Ministry of Education)/College of Life Sciences Guizhou University School of Life Sciences North China University of Science and Technology

Ericaceae is a diverse family of flowering plants distributed nearly worldwide,and it includes 126 genera and more than 4,000 *** the present study,we developed The Ericaceae Genome Resource （TEGR,http://***） as a comprehensive,user-friendly,web-based functional genomic database that is based on 16 published genomes from 16 Ericaceae *** TEGR database contains information on many important functional genes,including 763 auxin genes,2,407 flowering genes,20,432 resistance genes,617 anthocyanin-related genes,and 470 N6-methyladenosine （m6A） modification *** identified a total of 599,174 specific guide sequences for CRISPR in the TEGR *** gene duplication events,synteny analysis,and orthologous analysis of the16 Ericaceae species were performed using the TEGR *** TEGR database contains 614,821 functional genes annotated through the GO,Nr,Pfam,TrEMBL,and Swiss-Prot *** TEGR database provides the Primer Design,Hmmsearch,Synteny,BLAST,and JBrowse tools for helping users perform comprehensive comparative genome *** the high-quality reference genome sequences,genomic features,gene annotations,and bioinformatics results can be downloaded from the TEGR *** the future,we will continue to improve the TEGR database with the latest data sets when they become available and to provide a useful resource that facilitates comparative genomic studies.

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A Novel Approach to Construct a Composite Indicator by Maximizing Its Sum of Squared Correlations with Sub-Indicators

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Journal of Systems Science & Complexity 2015年第4期28卷 925-937页

作者： WU Wuqing wang xiaojing School of Business Renmin University of China Department of Statistics University of Connecticut

In the paper, a novel practical approach to construct a composite indicator （CI） is pro- posed. The key idea is to decide the weights of sub-indicators in constructing a composite indicator by maximizing the sum of squared correlations between the CI and sub-indicators. The CI obtained in this fashion has the maximum sum of squared correlations among all linear estimators. In addition, the simple, exact and explicit solutions of weights are proposed under the condition of non-negative irreducible matrix. Moreover, under this particular condition, the proposed method will become the principal component analysis. For illustration purpose, the proposed novel approach is utilized to cal- culate Sustainable Energy Index and Human Development Index which are two often-used cases to compare models in the literatures. The results the methods of Hatefi, et al. （2010） and Zhou all sub-indicators＇ correlations. show that the power of the proposed method outweigh et al. （2007） in terms of the sum of absolute values of

关键词： Composite indicator Correlation maximum sum of squared correlations (MSSC).

基于计算机筛选与分子模拟技术的宁夏肉牛血红蛋白源抗氧化肽的鉴定

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食品科学 2025年第2期46卷 108-117页

作者：徐斐然王玉王晓静崔伟王永坤周辉王兆明蔡克周章宝徐宝才合肥工业大学食品与生物工程学院动物源食品绿色制造与资源挖掘安徽省重点实验室安徽合肥230601 宁夏农产品质量标准与检测技术研究所宁夏银川750002

采用3种酶解法(碱性蛋白酶(E1组)、胃蛋白酶+胰蛋白酶(E2组)、碱性蛋白酶+胃蛋白酶+胰蛋白酶(E3组))制备宁夏肉牛血红蛋白酶解产物,并筛选出抗氧化活性最佳组分;利用氨基酸分析和液相色谱-串联质谱鉴定分子质量<3 kDa酶解产物的氨基酸... 详细信息

采用3种酶解法(碱性蛋白酶(E1组)、胃蛋白酶+胰蛋白酶(E2组)、碱性蛋白酶+胃蛋白酶+胰蛋白酶(E3组))制备宁夏肉牛血红蛋白酶解产物,并筛选出抗氧化活性最佳组分;利用氨基酸分析和液相色谱-串联质谱鉴定分子质量<3 kDa酶解产物的氨基酸组成和序列,利用计算机分析技术筛选出潜在的抗氧化肽,并验证其活性;通过分子模拟技术进一步研究宁夏肉牛血红蛋白抗氧化肽的作用机理。结果表明,E3组酶解效果最佳,超滤后<3 kDa的组分表现出更佳的抗氧化活性(1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基和2,2’-联氮-双(3-乙基苯并噻唑啉-6-磺酸)(2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid),ABTS)阳离子自由基清除率的半数抑制浓度(half maximal inhibitory concentration,IC_(50))分别为(18.382±0.023)mg/mL和(0.246±0.012)mg/mL);E3(分子质量<3 kDa)组富含疏水性和芳香族氨基酸,且鉴定和筛选出4条活性最佳的抗氧化肽,氨基酸序列分别为DWGHSW、VFYPW、GTGW和TYFPHF;其中,VFYPW表现出最高的DPPH自由基清除率(IC_(50):(0.350±0.013)mg/mL)和ABTS阳离子自由基清除率(IC_(50):(9.482±0.122)μg/mL),其次为DWGHSW;氢键和疏水作用使DWGHSW和VFYPW与Keap1蛋白(PDB ID:2FLU)形成稳定的复合物。该研究可为宁夏肉牛血红蛋白肽作为天然源抗氧化补充剂的应用提供理论依据,有助于宁夏肉牛血液资源的高值化利用。

关键词：计算机筛选分子模拟宁夏肉牛血红蛋白抗氧化肽鉴定

电液伺服系统动态柔性变结构比例微分复合控制研究

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液压与气动 2025年第1期49卷 20-29页

作者：王晓晶王小龙高汶韬冯亚铭北京建筑大学城市轨道交通车辆服役性能保障北京市重点实验室北京100044 北京建筑大学北京市建筑安全监测工程技术研究中心北京100044 哈尔滨理工大学机械动力工程学院黑龙江哈尔滨150080

针对摩擦干扰等不确定非线性因素对连续旋转电液伺服系统控制性能的影响,建立了马达系统模型及其摩擦力矩模型。采用改进麻雀搜寻算法进行比例微分控制器参数调优,确定了一种基于摩擦前馈补偿的简化动态柔性变结构比例微分复合控制策略... 详细信息

针对摩擦干扰等不确定非线性因素对连续旋转电液伺服系统控制性能的影响,建立了马达系统模型及其摩擦力矩模型。采用改进麻雀搜寻算法进行比例微分控制器参数调优,确定了一种基于摩擦前馈补偿的简化动态柔性变结构比例微分复合控制策略。该控制器提高了超低速和高频响应性能,系统频率响应达到了11 Hz。在工业计算机系统上利用C++Builder编程的可视化界面对实验结果与仿真进行对比,验证了控制效果。尽管实验中的控制性能相较于仿真略有下降,尤其是在高频情况下,但系统仍表现出较好的控制精度。研究结果为连续旋转电液伺服马达的控制提供了理论和实验依据。

关键词：连续回转电液伺服马达摩擦力矩模型动态柔性变结构控制

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数字技术赋能大学生党史学习教育的逻辑进路与实践策略

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南京中医药大学学报(社会科学版) 2025年第1期26卷 59-65页

作者：王晓静王韬周业勤南京医科大学马克思主义学院江苏南京211166

开展党史学习教育,是高校落实立德树人根本任务的重要途径之一。进入数字时代,数字技术赋能开展党史学习教育具有优化方式方法、丰富实践样态、循证评价学习成效等应用优势,但在教育实践过程中也面临平台资源建设滞后、教育工作者数字... 详细信息

开展党史学习教育,是高校落实立德树人根本任务的重要途径之一。进入数字时代,数字技术赋能开展党史学习教育具有优化方式方法、丰富实践样态、循证评价学习成效等应用优势,但在教育实践过程中也面临平台资源建设滞后、教育工作者数字化转型理念滞后,信息技术应用能力不足、治理机制不完善等现实问题。为纾解困境,建议从加强党史学习教育数字平台资源建设、提升党史教育者数字综合素养、健全党史学习教育数字化治理体系等多维度推进大学生党史学习教育常态化长效化开展,提升党史学习教育育人效果。

关键词：数字技术党史学习教育大学生数字教学平台治理机制

ANALYSES ON NONLINEAR COUPLING OF MAGNETO-THERMO-ELASTICITY OF FERROMAGNETIC THIN SHELL—II:FINITE ELEMENT MODELING AND APPLICATION

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Acta Mechanica Solida Sinica 2009年第3期22卷 197-205页

作者： Xingzhe wang xiaojing Zheng Key Laboratory of Mechanics on Western Disasters and Environment Ministry of Education of China College of Civil Engineering and Mechanics Lanzhou University Lanzhou 730000 China

Based on the generalized vaxiational principle of magneto-thermo-elasticity of a ferromagnetic thin shell established （see, Analyses on nonlinear coupling of magneto-thermo- elasticity of ferromagnetic thin shell--I）, the present paper developed a finite element modeling for the mechanical-magneto-thermal multi-field coupling of a ferromagnetic thin shell. The numerical modeling composes of finite element equations for three sub-systems of magnetic, thermal and deformation fields, as well as iterative methods for nonlinearities of the geometrical large-deflection and the multi-field coupling of the ferromagnetic shell. As examples, the numerical simulations on magneto-elastic behaviors of a ferromagnetic cylindrical shell in an applied magnetic field, and magneto-thermo-elastic behaviors of the shell in applied magnetic and thermal fields are carried out. The results are in good agreement with the experimental ones.

关键词： ferromagnetic thin shell magneto-thermo-elasticity nonlinear coupling finite element method

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Fault Feature Extraction of Rolling Bearing Based on an Improved Cyclical Spectrum Density Method

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Chinese Journal of Mechanical Engineering 2015年第6期28卷 1240-1247页

作者： LI Min YANG Jianhong wang xiaojing School of Mechanical Engineering University of Science and Technology Beijing

The traditional cyclical spectrum density（CSD） method is widely used to analyze the fault signals of rolling bearing. All modulation frequencies are demodulated in the cyclic frequency spectrum. Consequently, recognizing bearing fault type is difficult. Therefore, a new CSD method based on kurtosis（CSDK） is proposed. The kurtosis value of each cyclic frequency is used to measure the modulation capability of cyclic frequency. When the kurtosis value is large, the modulation capability is strong. Thus, the kurtosis value is regarded as the weight coefficient to accumulate all cyclic frequencies to extract fault features. Compared with the traditional method, CSDK can reduce the interference of harmonic frequency in fault frequency, which makes fault characteristics distinct from background noise. To validate the effectiveness of the method, experiments are performed on the simulation signal, the fault signal of the bearing outer race in the test bed, and the signal gathered from the bearing of the blast furnace belt cylinder. Experimental results show that the CSDK is better than the resonance demodulation method and the CSD in extracting fault features and recognizing degradation trends. The proposed method provides a new solution to fault diagnosis in bearings.

关键词： cyclostationary cyclical spectrum density rolling bearing fault diagnosis

Water quality evaluation of Haihe River with fuzzy similarity measure methods

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Journal of Environmental Sciences 2013年第10期25卷 2041-2046页

作者： xiaojing wang Zhihong Zou Hui Zou School of Economic and Management Beihang University Department of Applied Mathematics College of ScienceChina Agricultural University

Fuzzy similarity measures, which are used to judge the closeness of two fuzzy sets, are presented to evaluate the water quality of the Haihe River. Based on the membership functions and coefficient of variation as the weights, four fuzzy similarity measures （including Lattice similarity measure, Hamming similarity measure, Euclidean similarity measure and the max-min similarity measure） are used to classify the 299 samples into the proper water quality standard ranks. The results are compared with the traditional distance discriminant methods. The calculation of two traditional distance discriminant methods （both Euclidean distance and absolute value distance） is also based on the use of coefficients of variation as the weights. Without the Lattice similarity measure, for this method loses some information, the correct assignment of samples classified into the same water quality ranks is 75.92% with the other three similarity measures and two distance discriminant methods. This result shows the reliability of the five methods. Only considering the three similarity measures, there were only 1.01% of the samples that did not classify to the same ranks, while the corresponding ratio of the two distance discriminant methods was 5.69%. The results of leave-one-out cross validation show that more than 88% of the samples are classified to the proper ranks, which demonstrates that the similarity measures are suitable to evaluate the water quality of the Haihe River.

关键词： similarity measure distance discriminant coefficient of variation membership function

2022年黑龙江省玉米样品16种真菌毒素监测分析

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公共卫生与预防医学 2025年第1期36卷 144-147页

作者：王缘王晓婧赵岚黑龙江省疾病预防控制中心黑龙江哈尔滨150030

目的了解黑龙江省玉米真菌毒素污染状况,分析污染原因以及提出防治措施。方法采集黑龙江省各地玉米样品473份,对玉米样品中黄曲霉毒素(aflatoxins,Afs)、伏马毒素(fumonisins,FBs)、脱氧雪腐镰刀菌烯醇(deoxynivalenol,DON)及其代谢物... 详细信息

目的了解黑龙江省玉米真菌毒素污染状况,分析污染原因以及提出防治措施。方法采集黑龙江省各地玉米样品473份,对玉米样品中黄曲霉毒素(aflatoxins,Afs)、伏马毒素(fumonisins,FBs)、脱氧雪腐镰刀菌烯醇(deoxynivalenol,DON)及其代谢物、玉米赤霉烯酮(zearalenone,ZEN)、赭曲霉毒素A(ochratoxin A,OTA)、交链孢酚(alternariol,AOH)、交链孢酚单甲醚(alternariol monomethyl ether,AME)、腾毒素(tentoxin,TEN)、交链孢菌酮酸(tenuazonic Acid,TeA)等16种真菌毒素进行检测,采用超高效液相色谱串联质谱同位素内标法检测和定量。结果玉米样品全部检出真菌毒素,检出率100%,每份样品受到一种及多种毒素共同污染;16种真菌毒素检出率范围为0.21%~98.31%;平均污染水平从0.67μg/kg~259.19μg/kg不等;3种毒素存在超标,超标率分别为脱氧雪腐镰刀菌烯醇(2.54%,12/473)、玉米赤霉烯酮(4.02%,19/473)和伏马毒素(2.54%,12/473);超标样本地区分布在牡丹江、双鸭山、鸡西、哈尔滨和齐齐哈尔。结论黑龙江省玉米受到多种真菌毒素联合污染,需要从多个环节加强监测以及采用多种途径和控制措施降低玉米污染。

关键词：真菌毒素监测玉米超高效液相色谱串联质谱法