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Particuology 2024年第7期90卷 323-339页

作者： Fopeng Wen liuyun Xu Yixiang Chen Zhaofu Deng Shen Zhang Wenming Song yuge li liping Wei School of Chemical Engineering Northwest UniversityXi’an710069China School of Chemistry and Chemical Engineering Yan'an UniversityYan'an716000China Machinery Industry Shanghai Lanya Petrochemical Equipment Inspection Institute Co. Ltd.Shanghai201518China The Research Center of Chemical Engineering Applying Technology for Resource of Shaanxi Xi’an710069China

The elbow erosion seriously jeopardizes the safe and stable operation of water–slag discharge pipeline of the coal gasification *** work simulated water–slag elbow characteristics with various slag injection positions by simulating five simplified and representative erosion categories,including A-type horizontal-vertical elbow with an upstream flow,B-type horizontal-vertical elbow with a downstream flow,C-type vertical-horizontal elbow with an upstream flow,D-type vertical-horizontal elbow with a downstream flow and E-type horizontal-horizontal *** with the C/D-type elbow,where particles were injected uniformly,the A-type elbow and E-type elbow were found to increase erosion rate,while the B-type elbow decreases erosion *** interesting discovery is that the elbow erosion rate is relatively low for small particles when particles are injected from the middle and bottom positions of the inlet section of the *** on the observation,a novel preceding rotating sheet structure was developed to regulate the particle injection *** shows an excellent anti-erosion performance by reducing the maximum erosion rate of particles with diameters of 50,100,and 200μm by 23%,35%,and 43%,respectively.

关键词： Erosion Slag-water Uneven particles Elbow pipe Erosion inhibition Preceding rotating sheet structure

Plasma nitrogen fixation system with dual-loop enhancement for improved energy efficiency and its efficacy for lettuce cultivation

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Plasma Science and Technology 2024年第1期26卷 82-92页

作者：韩泽阳张梦雪张頔何欣井天军葛知轩李玉鸽朱童任云鸿仲崇山季方 College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083People’s Republic of China College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083People’s Republic of China Electric Power Research Institute State Grid Gansu Electric Power Company GansuLanzhou 730030People’s Republic of China

Plasma nitrogen fixation(PNF)has been emerging as a promising technology for greenhouse gasfree and renewable energy-based ***,most PNF studies seldom address practical application-specific *** this work,we present the development of a compact and automatic PNF system for on-site agricultural *** system utilized a gliding-arc discharge as the plasma source and employed a dual-loop design to generate NO_(x)from air and water under atmospheric *** results showed that the system with a dualloop design performs well in terms of energy costs and production *** operational parameters for the system were determined through experimentation,resulting in an energy cost of 13.9 MJ mol^(-1)and an energy efficiency of 16 g kWh^(-1)for NO_(3)^(-)production,***,the concentration of exhausted NO_(x)was below the emission *** lettuce cultivation experiments demonstrated that NO_(x)^(-)produced by the PNF system could serve as liquid nitrate nitrogen ***,our work demonstrates the potential of the developed PNF system for on-site application in the production of green-leaf vegetables.

关键词： plasma nitrogen fixation gliding arc soilless cultivation lettuce

2016—2017年中国7~17岁儿童青少年血压异常现况——4种标准比较

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卫生研究 2024年第4期53卷 532-539,560页

作者：李彧格苑弘弢蔡姝雅李福胜南晶杨宇祥朴玮赵丽云于冬梅中国疾病预防控制中心营养与健康所北京100050 国家卫生健康委公共营养与健康重点实验室北京100050

目的基于2017年美国儿科协会(American Academy of Pediatrics,AAP)的《儿童青少年高血压筛查和管理临床实践指南》(美国AAP标准)、国际儿童青少年血压偏高百分位参考值(国际标准)、中华人民共和国卫生行业标准《7岁~18岁儿童青少年血... 详细信息

目的基于2017年美国儿科协会(American Academy of Pediatrics,AAP)的《儿童青少年高血压筛查和管理临床实践指南》(美国AAP标准)、国际儿童青少年血压偏高百分位参考值(国际标准)、中华人民共和国卫生行业标准《7岁~18岁儿童青少年血压偏高筛查界值(WS/T 610—2018)》(行业标准)以及《中国高血压防治指南(2018年修订版)》(指南标准),描述及分析2016—2017年中国7~17岁儿童青少年各年龄组正常高值血压和血压偏高检出率,并对4种判定标准进行一致性检验。方法数据来源于2016—2017年中国儿童与乳母营养健康监测,该调查采用多阶段分层整群抽样方法,从31个省(自治区、直辖市)的275个监测点中抽取调查对象,经数据清理共纳入7~17岁研究对象67231名。血压测量采用电子血压计在同一时点重复测量3次的血压均数分别作为研究对象的收缩压及舒张压。为与抽样设计方法相匹配,采用国家统计局提供的第六次人口普查数据对结果进行加权调整,考虑各层抽样权重。结果中国7~17岁儿童青少年正常高值血压检出率由高到低依次为美国AAP标准(20.15%)>指南标准(17.29%)>行业标准(13.14%)>国际标准(12.66%),血压偏高检出率由高到低依次为指南标准(24.31%)>国际标准(21.34%)>美国AAP标准(20.59%)>行业标准(19.96%)。检出率随年龄的升高而下降。结论尽管美国AAP标准和国际标准与我国两项标准的一致性均为中高度一致,但检出率差异较大,考虑到种族差异,在应用国外标准判断我国儿童青少年血压情况时应持谨慎态度。

关键词：血压儿童青少年营养监测

2015年中国成年居民膳食维生素日常摄入量分布及不足率

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卫生研究 2024年第2期53卷 215-222页

作者：李彧格黄坤杨宇祥朴玮赵丽云于冬梅王玉英中国疾病预防控制中心营养与健康所北京100050 华中科技大学同济医学院公共卫生学院武汉430030 国家卫生健康委微量元素与营养重点实验室北京100050

目的分析2015年中国成年居民膳食维生素日常摄入量分布及摄入不足率。方法数据来源于2015—2017年中国居民营养与健康状况监测,采用多阶段分层整群抽样方法从31个省(自治区、直辖市)抽取298个监测点,纳入18岁及以上研究对象72231名。膳... 详细信息

目的分析2015年中国成年居民膳食维生素日常摄入量分布及摄入不足率。方法数据来源于2015—2017年中国居民营养与健康状况监测,采用多阶段分层整群抽样方法从31个省(自治区、直辖市)抽取298个监测点,纳入18岁及以上研究对象72231名。膳食调查数据采用连续3天24小时膳食回顾法结合调味品称重法收集,利用美国国家癌症研究所建立的食物及营养素日常摄入量评估方法估计维生素B1、维生素B2、维生素C、维生素E和烟酸共5种维生素的日常摄入量及其分布,并参考《中国居民膳食营养素参考摄入量(2023版)》发布的中国居民膳食维生素平均需要量或适宜摄入量,估计维生素摄入不足率。结果中国成年居民的膳食维生素E、维生素C、维生素B1、维生素B2和烟酸的日常摄入量分别为27.93、77.67、0.78、0.62和13.15 mg/d。维生素摄入不足率从高到低依次为维生素B2(95.98%)、维生素B1(86.73%)、维生素C(63.70%)、烟酸(39.81%)和维生素E(21.17%)。女性维生素E、维生素C、维生素B1和烟酸摄入不足率高于男性(P<0.01),75岁及以上年龄组5种维生素的摄入不足率高于其他年龄组,农村居民的维生素C、维生素B2和烟酸的摄入不足率高于城市(P<0.01),小学以下文化程度居民5种维生素的摄入不足率均高于小学及初中文化程度居民和高中及以上文化程度居民(P<0.01),家庭年总收入<2万元居民5种维生素的摄入不足率均高于收入≥2万元居民(P<0.01),超重和肥胖组居民维生素E的摄入不足率低于正常体质指数(body mass index,BMI)组居民,维生素C和烟酸的摄入不足率高于正常BMI组居民,差异均具有统计学意义(P<0.01)。除维生素E外,整体上5种维生素的摄入不足率随身体活动强度的升高而降低。结论2015年中国成年居民膳食维生素日常摄入量偏低,维生素日常摄入量及摄入不足率在不同性别、年龄、城乡、文化程度、家庭收入水平、BMI以及身体活动强度组的分布存在差异。

关键词：维生素日常摄入量营养监测

Arabidopsis NF-YCs Mediate the light-Controlled Hypocotyl Elongation via Modulating Histone Acetylation

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Molecular Plant 2017年第2期10卷 260-273页

作者： Yang Tang Xuncheng liu Xu liu yuge li Keqiang Wu Xingliang Hou Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China University of the Chinese Academy of Sciences Beijing 100049 China Institute of Plant Biology College of Ufe Science National Taiwan University Taipei 106 Taiwan These authors contributed equally to this article.

light is a crucial environmental signal that promotes photomorphogenesis, the developmental process with a series of light-dependent alterations for plants to adapt various external challenges. Chromatin modification has been proposed to be involved in such light-mediated growth, but the underlying mecha- nism is still elusive. In this study, we identified four Arabidopsis thaliana Nuclear Factor-YC homologs, NF- YCl, NF-YC3, NF-YC4, and NF-YC9 （NF-YCs）, which function redundantly as repressors of light-controlled hypocotyl elongation via histone deacetylation. Obvious etiolation phenotypes are observed in NF-YCs loss-of-function mutant seedlings grown under light conditions, including significant elongated hypocotyls and fewer opened cotyledons. We found that NF-YCs interact with histone deacetylase HDA15 in the light, co-target the promoters of a set of hypocotyl elongation-related genes, and modulate the levels of histone H4 acetylation on the associated chromatins, thus repressing gene expression. In contrast, NF-YC-HDA15 complex is dismissed from the target genes in the dark, resulting in increased level of H4 acetylation and consequent etiolated growth. Further analyses revealed that transcriptional repression activity of NF-YCs on the light-controlled hypocotyl elongation partially depends on the deacetylation activity of HDA15, and loss of HDA15 function could rescue the short-hypocotyl phenotype of NF-YCs overexpression plants. Taken together, our results indicate that NF-YCl, NF-YC3, NF-YC4, and NF-YC9 function as tran- scriptional co-repressors by interacting with HDA15 to inhibit hypocotyl elongation in photomorphogen- esis during the early seedling stage. Our findings highlight that NF-YCs can modulate plant development in response to environmental cues via epigenetic regulation.

关键词： photomorphogenesis hypocotyl elongation NF-YC histone deactylation

Molecular characterization of α-gliadin genes from common wheat cultivar Zhengmai 004 and their role in quality and celiac disease

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The Crop Journal 2014年第1期2卷 10-21页

作者： yuge li Ranran Xin Dale Zhang Suoping li College of life Science Henan University

A total of 43 unique clones(Z4A-1 to Z4A-43 with GenBank accession numbers of HM120221, HM120222, JX828270, JN831402 to JN831406, and KC715889 to KC715923, respectively) were amplified and cloned from common wheat cultivar Zhengmai 004 using a PCR-based strategy. They included 22 full-ORF α-gliadin genes and 21 pseudogenes containing at least one in-frame stop codon. Comparative analysis of the deduced amino acid sequences showed that all the isolated genes displayed the typical structural features of α-gliadin genes and that the putative proteins of Z4A-7, Z4A-14, Z4A-17 and Z4A-20 had an extra cysteine residue in the unique domain II, while Z4A-15 lacked the second conserved cysteine residue in the unique domain I. The two fusion proteins of Z4A-15 and Z4A-20 were successfully detected by SDS-PAGE and Western blotting, although the protein level was relatively low. Based on the occurrence of the four major epitopes, as well as the lengths of the two glutamine repeats, 8, 6, and 8 genes were assigned to the Gli-2 loci on the respective chromosomes 6A, 6B, and 6D and a total of respectively 16, 0 and 23 immunogenic peptides were identified. In addition, 4 of the 5 genes with odd numbers of cysteine residues were assigned to chromosome 6D, suggesting that common wheat cultivar Zhengmai 004 has the potential to induce celiac disease(CD) and that the D genome exerts the most influence on gluten quality, but is the most deleterious for CD patients. By phylogenetic analysis, 11 exceptional α-gliadins with few or no immunogenic peptides from Triticum monococcum and Aegilops tauschii were detected, a finding that further supports the prospect of CD prevention. Finally, secondary structure prediction showed that most(98.48%) of the α-gliadins invariably contained five conserved α-helices(H1 to H5) in the two glutamine repeats and unique domains and 67.68% of the α-gliadins also contained a β-strand(S) in the C-terminal unique domains. An absent α-helix H2, 1–2 extra α-helic

关键词： α-gliadin Chromosome location Heterologous expression Secondary structure prediction

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输油管道水相内部沉积特性研究

化工设备与管道 2024年第1期61卷 100-106页

作者：李玉阁温佛鹏任隽高智德宋文明闫渊魏利平机械工业上海蓝亚石化设备检测所有限公司上海201600 西北大学化工学院陕西西安710069 中国石油化工股份有限公司安庆分公司安徽安庆246001 西安市特种能源材料重点实验室陕西西安710069

输油管线油水两相流输送水相沉积区是腐蚀重灾区,掌握水相沉积规律对管线的腐蚀防护具有重要的指导作用。为研究不同状况下输油管线水相积液对管道腐蚀的影响规律,模拟了不同含水率、倾角、流速等因素下的流型分布状况,探讨了不同流速... 详细信息

输油管线油水两相流输送水相沉积区是腐蚀重灾区,掌握水相沉积规律对管线的腐蚀防护具有重要的指导作用。为研究不同状况下输油管线水相积液对管道腐蚀的影响规律,模拟了不同含水率、倾角、流速等因素下的流型分布状况,探讨了不同流速、倾角、含水量下两相流流型分布规律,明确了流速在0.3~1.3m/s、1%~10%时水相沉积状态,发现倾角在30°时,水相沉积比较严重;汇总了管道内部出现的油水两相均匀流区、油水分层区和逆流沉积区三种状态,建立了不同含水率下流速-倾角-沉积状况表。通过现场管道泄漏点分布验证,危险管段分布特征与模拟结果基本吻合。

关键词：输油管线油水两相流积液腐蚀

DELLA and EDS1 Form a Feedback Regulatory Module to Fine-Tune Plant Growth-Defense Tradeoff in Arabidopsis

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Molecular Plant 2019年第11期12卷 1485-1498页

作者： yuge li Yuhua Yang Yilong Hu Hailun liu Ming He Ziyin Yang Fanjiang Kong Xu liu Xingliang Hou Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement&Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhouChina Center of Economic Botany Core Botanical GardensChinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina School of life Sciences Guangzhou UniversityGuangzhou 510006China

Plants maintain a dynamic balance between growth and defense,and optimize allocation of resources for survival under constant pathogen ***,the underlying molecular regulatory mechanisms,especially in response to biotrophic bacterial infection,remain ***,we demonstrate that DELLA proteins and EDS1,an essential resistance regulator,form a central module modulating plant growth-defense tradeoffs via direct *** infected by Pst DC3000,EDS1 rapidly promotes salicylic acid(SA)biosynthesis and resistance-related gene expression to prime defense response,while pathogen infection stabilizes DELLA proteins RGA and RGL3 to restrict growth in a partially EDS1-dependent manner,which facilitates plants to develop resistance to ***,the increasingly accumulated DELLAs interact with EDS1 to suppress SA overproduction and excessive resistance *** together,our findings reveal a DELLA-EDS1-mediated feedback regulatory loop by which plants maintain the subtle balance between growth and defense to avoid excessive growth or defense in response to constant biotrophic pathogen attack.

关键词： DELLA EDS1 Protein interaction Growth-defense tradeoff Arabidopsis

Multi-prior physics-enhanced neural network enables pixel super-resolution and twin-imagefree phase retrieval from single-shot hologram

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Opto-Electronic Advances 2024年第9期7卷 22-38页

作者： Xuan Tian Runze li Tong Peng yuge Xue Junwei Min Xing li Chen Bai Baoli Yao State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China University of Chinese Academy of Sciences Beijing 100049China.

Digital in-line holographic microscopy(DIHM)is a widely used interference technique for real-time reconstruction of living cells’morphological information with large space-bandwidth product and compact ***,the need for a larger pixel size of detector to improve imaging photosensitivity,field-of-view,and signal-to-noise ratio often leads to the loss of sub-pixel information and limited pixel ***,the twin-image appearing in the reconstruction severely degrades the quality of the reconstructed *** deep learning(DL)approach has emerged as a powerful tool for phase retrieval in DIHM,effectively addressing these ***,most DL-based strategies are datadriven or end-to-end net approaches,suffering from excessive data dependency and limited generalization ***,a novel multi-prior physics-enhanced neural network with pixel super-resolution(MPPN-PSR)for phase retrieval of DIHM is *** encapsulates the physical model prior,sparsity prior and deep image prior in an untrained deep neural *** effectiveness and feasibility of MPPN-PSR are demonstrated by comparing it with other traditional and learning-based phase retrieval *** the capabilities of pixel super-resolution,twin-image elimination and high-throughput jointly from a single-shot intensity measurement,the proposed DIHM approach is expected to be widely adopted in biomedical workflow and industrial measurement.

关键词： optical microscopy quantitative phase imaging digital holographic microscopy deep learning super-resolution

Genetic Analysis of a Dwarf Vine and Small Fruit Watermelon Mutant

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Horticultural Plant Journal 2016年第4期2卷 224-228页

作者： li yuge XU Aijiao DONG Wei li Zhi li Guoshen College of Science Biology Henan UniversityPlant Genetics Laboratory

The dwarf vine and small fruit watermelon, referred to as ‘dsh' in this study, is a natural mutant of the ordinary watermelon, ‘Hanxuan Lvyuan'.Morphological assessment indicated that its main vine length, internode length, and single-fruit weight were significantly lower than those of the ordinary watermelon(P 0.05), respectively. It was suggested that this dwarf and small fruit mutation was a single recessive gene trait that followed a Mendel's inheritance.

关键词： watermelon dwarf small fruit short vine mutant