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Journal of Integrative Agriculture 2019年第12期18卷 2786-2792页

作者： Zhuang Hua ZHAO Jing huang Li-li kang Zhen-sheng ZHAO Jie State Key Laboratory of Crop Stress Biology for Arid Areas College of Plant Protection Northwest A&F University

Since the recent discovery of barberry(Berberis spp.)as an alternate host for the stripe rust pathogen Puccinia striiformis,many Chinese Berberis species have been identified as alternate hosts for *** ***,little is known about Berberis species and their distribution in wheat-growing regions in Xinjiang,China,where stripe rust is *** the largest province or autonomous region,Xinjiang represents a relatively independent epidemic region for wheat stripe rust in *** this study,we con ducted a survey of barberry plants in the main wheat-growi ng areas of *** iden tified three Berberis species,***,*** and ***,and con firmed their roles as potential alternate hosts for *** *** in the laboratory.

关键词： barberry alternate host sexual reproduction stripe rust yellow rust

基于反蛋白石结构的功能型材料制备及其在水处理领域的研究进展

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复合材料学报 2024年第8期41卷 4004-4025页

作者：李菁唐新军黄勇新疆工程学院机电工程学院乌鲁木齐830023 新疆工程学院激光智能制造与再制造工程技术研究中心乌鲁木齐830023

反蛋白结构(IO)是光子晶体的一种典型的空间结构构型。IO除了具有相互连通、高度规整有序的均孔结构外,还具有光子晶体的慢光效应、多次散射效应和放大光子吸收、发射的特性等。近年来,对IO的应用包括均孔膜、光子墨水、电池电极、传感... 详细信息

反蛋白结构(IO)是光子晶体的一种典型的空间结构构型。IO除了具有相互连通、高度规整有序的均孔结构外,还具有光子晶体的慢光效应、多次散射效应和放大光子吸收、发射的特性等。近年来,对IO的应用包括均孔膜、光子墨水、电池电极、传感器等。本文首先简述了IO的构建策略,分为“三步法”和“两步法”。进而详细总结了IO在水处理领域的研究进展,包括过滤筛分、高效吸附、催化降解、水质检测4个方面。最后,对IO材料在水处理领域中现有的局限性和未来的发展趋势进行了阐述和展望。

关键词：光子晶体反蛋白石结构多孔材料水处理研究进展

Rice melatonin deficiency causes premature leaf senescence via DNA methylation regulation

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The Crop Journal 2024年第3期12卷 721-731页

作者： Yue Lu Ahmed Gharib Rujia Chen Hanyao Wang Tianyun Tao Zhihao Zuo Qing Bu Yanze Su Yaoqing Li Yanmo Luo Hamdi F.El-Mowafi Zhichao Wang Qianfeng huang Shuting Wang Yang Xu Pengcheng Li Chenwu Xu Zefeng Yang Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education Agriculture College of Yangzhou UniversityYangzhou 225009JiangsuChina Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Jiangsu Key Laboratory of Crop Genetics and PhysiologyYangzhou UniversityYangzhou 225009JiangsuChina National Institute of Laser Enhanced Sciences(NILES) Cairo UniversityGiza 12613Egypt Rice Research Department Field Crops Research InstituteAgricultural Research CenterSakhaKafr El-Sheikh 33717Egypt

In a study of DNA methylation changes in melatonin-deficient rice mutants,mutant plants showed premature leaf senescence during grain-filling and reduced grain *** deficiency led to transcriptional reprogramming,especially of genes involved in chlorophyll and carbon metabolism,redox regulation,and transcriptional regulation,during dark-induced leaf *** of mCG and mCHG in the melatonin-deficient rice mutants was associated with the expression change of both protein-coding genes and transposable element-related *** in gene expression and DNA methylation in the melatonin-deficient mutants were compensated by exogenous application of melatonin.A decreased S-adenosyl-L-methionine level may have contributed to the DNA methylation variations in rice mutants of melatonin deficiency under dark conditions.

关键词： Melatonin Premature leaf senescence Rice DNA methylation Epigenetic regulation

A framework for mixed-use decomposition based on temporal activity signatures extracted from big geo-data

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International Journal of Digital Earth 2020年第6期13卷 708-726页

作者： Lun Wu Ximeng Cheng Chaogui kang Di Zhu Zhou huang Yu Liu Institute of Remote Sensing and Geographical Information Systems Peking UniversityBeijingPeople’s Republic of China Beijing Key Lab of Spatial Information Integration and Its Applications Peking UniversityBeijingPeople’s Republic of China School of Remote Sensing and Information Engineering Wuhan UniversityWuhanPeople’s Republic of China

Mixed use has been extensively applied as an urban planning principle and hinders the study of single urban *** address this problem,it is worth decomposing the mixed *** by the concept of spectral unmixing in remote sensing applications,this paper proposes a framework for mixed-use decomposition based on big *** decomposition in terms of human activities differs from traditional land use research,and it is more reasonable to infer the actual urban function of *** framework consists of four steps,namely temporal activity signature extraction,urban function base curve extraction,mixeduse decomposition,and result ***,the temporal activity signatures(TASs)of each zone are extracted as the proxy of human activity ***,the diurnal TASs of routine activities are extracted as urban function base curves(***).Third,a linear decomposition model is used to decompose the mixed use and obtain multiple results(urban function composition,dynamic activity proportions,and the mixing index).Finally,result validation strategies are *** framework offers method extensibility and has few requirements for the input *** is validated by means of a case study of Beijing,based on a social media check-in dataset.

关键词： Mixed use spatial–temporal pattern urban function human activity big geo-data

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螺旋波纹管流动特性试验研究

低温与超导 2024年第2期52卷 40-47页

作者：黄华焦婷黄逸佳苏磊国网上海市电力公司上海200122 国网上海市电力公司电力科学研究院上海200437 上海国际超导科技有限公司上海200444

螺旋波纹管尺寸参数与流体在其内部的压损之间的关系尚未明确,针对超导电缆用的Φ40 mm以上的大尺寸波纹管也缺乏相应的试验数据。本文搭建了大尺寸波纹管流动特性试验平台,并参照已有的超导电缆结构,对标称外径分别为Φ90 mm和Φ60 mm... 详细信息

螺旋波纹管尺寸参数与流体在其内部的压损之间的关系尚未明确,针对超导电缆用的Φ40 mm以上的大尺寸波纹管也缺乏相应的试验数据。本文搭建了大尺寸波纹管流动特性试验平台,并参照已有的超导电缆结构,对标称外径分别为Φ90 mm和Φ60 mm、尺寸规格不同的四个空芯螺旋波纹管样品进行水介质的流动特性试验研究,从试验上得到了不同流量下的压损数据。结果表明,波纹管内压损随流速的增大呈接近于平方的关系增大。在流速相同情况下,外径规格相同的样品,波深越深,压损值越大;波深相同的样品,外径越小压损越大。利用上述试验数据,推导出每个样品摩擦系数f与雷诺数Re的关系式。关系式计算值与实验值最大偏差值为16.77%,可在一定误差范围内对摩擦系数f进行估算。

关键词：超导电缆螺旋波纹管流动特性压力损失

Measurement Research Based on Bayesian Structural Equation Cognitive Model

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1163-1177页

作者： Shuixian Fei Sanzhi Shi Jixin Li Jiali Zheng Xinyi Yu Yifan huang Xiang Li School of Mathematics and Statistics Changchun University of Science and Technology Changchun China

The Bayesian structural equation model integrates the principles of Bayesian statistics, providing a more flexible and comprehensive modeling framework. In exploring complex relationships between variables, handling uncertainty, and dealing with missing data, the Bayesian structural equation model demonstrates unique advantages. Therefore, Bayesian methods are used in this paper to establish a structural equation model of innovative talent cognition, with the measurement of college students’ cognition of innovative talent being studied. An in-depth analysis is conducted on the effects of innovative self-efficacy, social resources, innovative personality traits, and school education, aiming to explore the factors influencing college students’ innovative talent. The results indicate that innovative self-efficacy plays a key role in perception, social resources are significantly positively correlated with the perception of innovative talents, innovative personality tendencies and school education are positively correlated with the perception of innovative talents, but the impact is not significant.

关键词： Bayesian Structural Equation Model Innovative Talents Measure of Cognition Innovative Self-Efficacy Social Resources

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数字经济、科技创新与产业结构优化升级

经济纵横 2024年第5期 120-128页

作者：黄鑫昊李迪长春工业大学经济管理学院吉林长春130012

随着数字化浪潮席卷全球,数字经济成为推动我国产业结构优化升级的重要动力。文章基于2013—2022年我国30个省份的面板数据,在利用熵值法对我国数字经济发展水平进行测度的基础上,引入中介效应与空间杜宾模型,研究数字经济、科技创新与... 详细信息

随着数字化浪潮席卷全球,数字经济成为推动我国产业结构优化升级的重要动力。文章基于2013—2022年我国30个省份的面板数据,在利用熵值法对我国数字经济发展水平进行测度的基础上,引入中介效应与空间杜宾模型,研究数字经济、科技创新与产业结构优化升级的运行传导机制。研究发现,数字经济对产业结构优化升级具有直接正向效应,在经过一系列稳健性检验后该结论依然成立;从影响机制来看,科技创新作为中介在数字经济影响产业结构优化升级中发挥显著作用;数字经济发展对产业结构优化升级具有正向的空间溢出效应和区域异质性。建议制定区域差异化发展策略,通过科技创新激发数字经济潜力,以促进产业结构全面优化升级,推动我国经济实现高质量发展。

关键词：数字经济产业结构优化升级产业结构合理化产业结构高级化科技创新

印刷革命塑造教育现代性——基于文本、图像、空间的三维透视

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教育学报 2024年第1期20卷 17-30页

作者：黄希雯董标华东师范大学教育学部上海200062 华南师范大学教育科学学院广州510631

印刷革命是一场未得承认的革命。它在塑造教育现代性上的作用,亦未得到充分的承认、描述和估定。从印刷革命的代言者“印刷本”切入论题,在文本、图像、空间三维角度上分析,以接近论旨。印刷本产生了与“我”有别的规模化的“他者”世界... 详细信息

印刷革命是一场未得承认的革命。它在塑造教育现代性上的作用,亦未得到充分的承认、描述和估定。从印刷革命的代言者“印刷本”切入论题,在文本、图像、空间三维角度上分析,以接近论旨。印刷本产生了与“我”有别的规模化的“他者”世界,人在阅读中建立主体性。印刷本的逻辑、线性叙事方式,铸就空前教育模式。印刷本化神奇为具体、化天启为对话,人的地位得以提高。图像,使知识变迁发生了丰富化、复杂化的质变(知识革命),理性在丰富、复杂的新知识基础上,加速成长。印刷本整齐划一的版式,使人的思维方式发生趋同性变异,成为教育制度化的思想基础和规章文本的技术保障。印刷本的规范和留白,给认识和反思提供崭新途径。印刷本塑造的教育现代性,最终完成了首次全球化教育革命,但也积孕了现代教育的困境与矛盾。

关键词：印刷革命教育现代性文本图像空间

Truncated L1 Regularized Linear Regression:Theory and Algorithm

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Communications in Computational Physics 2021年第6期30卷 190-209页

作者： Mingwei Dai Shuyang Dai Junjun huang Lican kang Xiliang Lu Center of Statistical Research and School of Statistics Southwestern University of Finance and EconomicsChengduP.R.China School of Mathematics and Statistics Wuhan UniversityWuhanP.R.China Hubei Key Laboratory of Computational Science Wuhan UniversityWuhanP.R.China.

Truncated L1 regularization proposed by Fan in[5],is an approximation to the L0 regularization in high-dimensional sparse *** this work,we prove the non-asymptotic error bound for the global optimal solution to the truncated L1 regularized linear regression problem and study the support recovery ***,a primal dual active set algorithm(PDAS)for variable estimation and selection is *** with continuation by a warm-start strategy leads to a primal dual active set with continuation algorithm(PDASC).Data-driven parameter selection rules such as cross validation,BIC or voting method can be applied to select a proper regularization *** application of the proposed method is demonstrated by applying it to simulation data and a breast cancer gene expression data set(bcTCGA).

关键词： High-dimensional linear regression sparsity truncated L1 regularization primal dual active set algorithm

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山梨坦(2-丙基)庚酯的合成及性能

精细石油化工 2024年第3期41卷 68-72页

作者：成西涛南蓉黄方方张金峰郭鹏涛杨淑玮陕西化工研究院有限公司陕西西安710054 陕西省石油精细化学品重点实验室陕西西安710054

将煤制烯烃(MTO)的副产物2-丙基庚醇通过氧化反应制得2-丙基庚酸,再以其和山梨醇为原料,通过一步法合成了山梨坦(2-丙基)庚酯,采用FT-IR、GC及HPLC进行了表征。结果表明:粗产物中山梨坦(2-丙基)庚酯单酯质量分数可达59.8%,提纯产物中单... 详细信息

将煤制烯烃(MTO)的副产物2-丙基庚醇通过氧化反应制得2-丙基庚酸,再以其和山梨醇为原料,通过一步法合成了山梨坦(2-丙基)庚酯,采用FT-IR、GC及HPLC进行了表征。结果表明:粗产物中山梨坦(2-丙基)庚酯单酯质量分数可达59.8%,提纯产物中单酯含量可达95.6%。山梨坦(2-丙基)庚酯产品的防腐抑菌性能达到并优于市售山梨坦辛酸酯的水平,具有较好的乳化、助洗功能。将山梨坦(2-丙基)庚酯替代部分表面活性剂加入洗衣液中,无需添加防腐剂,微生物挑战实验7 d,菌落数即小于10 cfu/g,洗涤性能优异。

关键词：山梨坦辛酸酯山梨坦(2-丙基)庚酯 2-丙基庚酸防腐性能