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Transient long-range distance measurement by a Vernier spectral interferometry

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Photonics Research 2024年第6期12卷 1107-1114页

作者： LIANG XU KUN WANG CHEN LIU wenying CHEN CHI zhang XINLIANG zhang Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Optics Valley Laboratory Wuhan 430074China

Rapid and long-range distance measurements are essential in various industrial and scientific applications,and among them,the dual-comb ranging system attracts great attention due to its high ***,the tem-poral asynchronous sampling results in the tradeoff between frame rate and ranging precision,and the non-ambiguity range(NAR)is also limited by the comb cycle,which hinders the further advancement of the dual-comb ranging *** this constraint,we introduce a Vernier spectral interferometry to improve the frame rate and NAR of the ranging ***,leveraging the dispersive time-stretch technology,the dual-comb interferometry becomes spectral ***,the asynchronous time step is unlimited,and the frame rate is improved to 100 ***,dual-wavelength bands are introduced to implement a Vernier spectral interferometry,whose NAR is enlarged from 1.5 m to 1.5 ***,this fast and long-range system also demonstrated high precision,with a 22.91-nm Allan deviation over 10-ms averaging *** a result,the proposed Vernier spectral interferometry ranging system is promising for diverse applications that necessitate rapid and extensive distance measurement.

关键词： interferometry spectral system

气相色谱–质谱联用法测定印刷原辅材料中的邻苯二甲酸酯

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包装工程 2024年第13期45卷 253-258页

作者：汤文杰王先羽张文莹岳绍学邢担担郑华明宁波创源文化发展股份有限公司浙江宁波315899 武汉工程大学等离子体化学与新材料湖北省重点实验室武汉430205

目的在印刷行业原辅材料的检测中,建立气相色谱–质谱联用方法测定原材料及辅助材料中10种邻苯二甲酸酯的浓度。方法样品中的被测物经四氢呋喃超声萃取、乙腈沉淀后,通过保留时间及选择离子进行定性,采用外标法进行数据分析,采用气相色... 详细信息

目的在印刷行业原辅材料的检测中,建立气相色谱–质谱联用方法测定原材料及辅助材料中10种邻苯二甲酸酯的浓度。方法样品中的被测物经四氢呋喃超声萃取、乙腈沉淀后,通过保留时间及选择离子进行定性,采用外标法进行数据分析,采用气相色谱–质谱联用法检测。结果10种邻苯二甲酸酯在0.05~20mg/L内具有良好的线性度,标准曲线相关系数大于0.999,检出限范围为0.003~0.025mg/kg,回收率范围为87.12%~123.50%,相对标准偏差小于5%。结论该方法工艺简单、操作灵活,且其回收率比常规方法有所提高,非常适用于测定印刷出口型企业的原辅材料中的邻苯二甲酸酯。

关键词：印刷原辅材料邻苯二甲酸酯气相色谱–质谱仪

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Optimizing extractants selection for efficient separation of phenols and nitrogen-containing heteroaromatics using hydrogen bond interaction strategies

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Chinese Journal of Chemical Engineering 2024年第4期68卷 43-52页

作者： Pengzhi Bei Rui zhang Jie Feng Antony Rajendran wenying Li State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China Department of Chemistry Mepco Schlenk Engineering College(Autonomous)Sivakasi 626005India

Focusing on the use of imidazolium ionic liquids and quaternary ammonium salts-based deep eutectic solvents for the separation of phenols and nitrogen-containing heteroaromatics,the role of heteroaromatics as specific sites for hydrogen bond-based separation has been *** environmentally friendly solvents are known for their ability to form hydrogen bonds with heteroatoms,a key aspect in separation *** quantified the hydrogen bond interaction energy to reach the threshold energy for efficient O-and N-heteroaromatics *** article provides an in-depth study of the structural nuances of different hydrogen bonding sites and their affinity properties while conducting a comparative evaluation of the separation efficiency of ionic liquids and deep eutectic solvents from a thermodynamic *** showed that phenols with dual hydrogen bonding recognition sites were easier to separate than nitrogen-containing *** ionic liquids were more suitable for the extraction of nonbasic nitrogen-containing heteroaromatics,and quaternary ammonium salts-based deep eutectic solvents are more effective for phenols and basic nitrogen-containing heteroaromatics,which was confirmed by Fourier transform infrared spectroscopy and empirical ***,this study provides a theoretical basis for the strategy design and selection of extractants for the efficient separation of O-and N-containing aromatic compounds.

关键词： Deep eutectic solvents Hydrogen bond Ionic liquids Separation Solvents Structural characteristics

Theoretical analysis of hydrogen solubility in direct coal liquefaction solvents

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International Journal of Coal Science & Technology 2024年第2期11卷 187-197页

作者： Xiaobin zhang Aoqi Wang Xingbao Wang wenying Li State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024ShanxiChina College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China

The cyclic hydrogenation technology in a direct coal liquefaction process relies on the dissolved hydrogen of the solvent or oil participating in the hydrogenation ***,a theoretical basis for process optimization and reactor design can be established by analyzing the solubility of hydrogen in liquefaction *** studies of hydrogen solubility in liquefaction solvents are challenging due to harsh reaction conditions and complex solvent *** this study,the composition and content of liquefied solvents were *** model compounds,hexadecane,toluene,naphthalene,tetrahydronaphthalene,and phenanthrene were chosen to represent the liquefied solvents in chain alkanes and monocyclic,bicyclic,and tricyclic aromatic *** solubility of hydrogen X(mol/mol)in pure solvent components and mixed solvents(alkanes and aromatics mixed in proportion to the chain alkanes+bicyclic aromatic hydrocarbons,bicyclic saturated aromatic hydrocarbons+bicyclic aromatic hydrocarbons,and bicyclic aromatic hydrocarbons+compounds containing het-eroatoms composed of mixed components)are determined using Aspen simulation at temperature and pressure conditions of 373–523 K and 2–10 *** results demonstrated that at high temperatures and pressures,the solubility of hydrogen in the solvent increases with the increase in temperature and pressure,with the pressure having a greater ***-more,the results revealed that hydrogen is more soluble in straight-chain alkanes than in other solvents,and the solubility of eicosanoids reaches a maximum of *** hydrogen solubility in aromatic ring compounds decreased gradually with an increase in the aromatic ring *** influence of chain alkanes on the solubility of hydrogen predominates in a mixture of solvents with different mixing ratios of chain alkanes and aromatic *** solubility of hydrogen in mixed aromatic solvents is less than that in the corresponding single ***

关键词： Direct coal liquefaction Liquefaction solvents Process simulation Hydrogen solubility

Mapping QTL for flowering time-related traits under three plant densities in maize

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The Crop Journal 2021年第2期9卷 372-379页

作者： Liwei Wang Zhiqiang Zhou Ronggai Li Jianfeng Weng Quanguo zhang Xinghua Li Baoqiang Wang wenying zhang Wei Song Xinhai Li The Key Laboratory of Crop Genetics and Breeding of Hebei Province Institute of Cereal and Oil CropsHebei Academy of Agriculture and Forestry SciencesShijiazhuang 050035HebeiChina Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Flowering time is an indicator of adaptation in maize and a key trait for selection in *** genetic basis of flowering time in maize,especially in response to plant density,remains *** objective of this study was to identify maize quantitative trait loci(QTL)associated with flowering time-related traits that are stably expressed under several plant densities and show additive effects that vary with plant *** hundred recombinant inbred lines(RIL)derived from a cross between Ye 478 and Qi 319,together with their parents,were planted at three plant densities(90,000,120,000,and 150,000 plants ha^(-1))in four *** five traits investigated were days to tasseling(DTT),days to silking(DTS),days to pollen shed(DTP),interval between anthesis and silking(ASI),and interval between tasseling and anthesis(TAI).A high-resolution bin map was used for QTL *** the RIL population,the DTT,DTS,and DTP values increased with plant density,whereas the ASI and TAI values showed negligible response to plant density.A total of 72 QTL were identified for flowering time-related traits,including 15 stably expressed across *** flowering time under different densities seems to be regulated by complex pathways rather than by several major genes or an independent *** effects of some stable QTL,especially qDTT8-1 and qDTT10-4,varied with plant *** mapping and cloning of these QTL will shed light on the mechanism of flowering time and assist in breeding earlymaturing maize inbred lines and hybrids.

关键词： Maize Flowering time Plant density Recombinant inbred lines(RIL) Genetic basis

成功案例结合差错案例教学在培养住院医师责任心和职业敏感性中的作用

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中国毕业后医学教育 2024年第4期8卷 275-278页

作者：胡晓华严晓春张文颖刘峰上海交通大学医学院附属第九人民医院(北部)肿瘤科上海201999 上海交通大学医学院附属第九人民医院(北部)妇产科上海201999

目的探讨成功案例结合差错案例教学在培养住院医师责任心和职业敏感性中的作用。方法就成功案例结合差错案例教学效果设置相关问卷,对培养住院医师责任心、职业敏感性、学习兴趣和积极性等方面对住院医师进行调查。结果住院医师认为成... 详细信息

目的探讨成功案例结合差错案例教学在培养住院医师责任心和职业敏感性中的作用。方法就成功案例结合差错案例教学效果设置相关问卷,对培养住院医师责任心、职业敏感性、学习兴趣和积极性等方面对住院医师进行调查。结果住院医师认为成功案例结合差错案例教学能够培养责任心的比例为83.3%;认为能够培养职业敏感性的比例为90.4%;认为能够调动学习兴趣和积极性的比例为83.3%。结论在临床教学过程中,适当加入差错案例教学,可以强化住院医师对医疗安全的重视,激发其责任意识,培养其职业敏感性。

关键词：差错案例教学住院医师临床教学责任心职业敏感性

Health promoting activities and corresponding mechanism of(–)-epicatechin-3-gallate

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Food Science and Human Wellness 2022年第3期11卷 568-578页

作者： Zhiliang Li Changchun Feng Hongjin Dong Weibin Jin wenying zhang Jianfeng Zhan Shuzhen Wang College of Life Science Huanggang Normal UniversityHubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive UtilizationHubei Collaborative Innovation Center for the Characteristic Resources Exploitation of Dabie MountainsHubei Zhongke Research Institute of Industrial TechnologyHuanggang 438000China College of Agriculture Yangtze UniversityJingzhou 434000China

(–)-Epicatechin-3-gallate(ECG),a bioactive polyphenolic compound,has contributed a lot to the health benefits of green *** attention has been focused on(–)-epigallocatechin-3-gallate(EGCG),but limited research has been performed towards *** EGCG,ECG also possesses various pharmacological and physiological properties,such as mediation of antioxidant activities,anti-inflammation response,regulation of cell proliferation and apoptosis,as well as anticancer properties during angiogenesis,invasion and metastasis *** ECG has various molecular targets within the cells,including CYP enzymes,phaseⅡdetoxification and antioxidant enzymes,as well as pro-inflammatory *** antineoplastic mechanism contains inhibition of phase 1 CYP enzymes,induction of phaseⅡdetoxification and antioxidant enzymes,high anti-inflammatory efficacy,arrest of cell cycle progression,regulation of apoptosis,as well as mediation of metastasis *** particular,the gallate moiety of ECG is critical for mediating inhibitory effects towards cancer *** regulation of intracellular signaling pathways,ECG also inhibits RNase A and matrix metalloproteinase enzymatic activity via chelating metals(copper and zinc)in cancer *** review has summarized recent studies on pharmacological properties of ECG,and discussed corresponding mechanism on modulation of cellular signaling events by ECG,hoping to broaden its multiple usage.

关键词： (-)-Epicatechin-3-gallate Polyphenolic compounds Pharmacological properties Anticarcinogenic agent Natural antioxidants Antimicrobial properties

Transcriptome analysis reveals key differentially expressed genes involved in wheat grain development

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The Crop Journal 2016年第2期4卷 92-106页

作者： Yonglong Yu Dong Zhu Chaoying Ma Hui Cao Yaping Wang Yanhao Xu wenying zhang Yueming Yan College of Life Sciences Capital Normal University Hubei Collaborative Innovation Center for Grain Industry/Yangtze University

Wheat seed development is an important physiological process of seed maturation and directly affects wheat yield and quality. In this study, we performed dynamic transcriptome microarray analysis of an elite Chinese bread wheat cultivar(Jimai 20) during grain development using the Gene Chip Wheat Genome Array. Grain morphology and scanning electron microscope observations showed that the period of 11–15 days post-anthesis(DPA) was a key stage for the synthesis and accumulation of seed starch. Genome-wide transcriptional profiling and significance analysis of microarrays revealed that the period from 11 to 15 DPA was more important than the 15–20 DPA stage for the synthesis and accumulation of nutritive *** test of cluster analysis of differential genes revealed five statistically significant gene expression profiles. Gene ontology annotation and enrichment analysis gave further information about differentially expressed genes, and Map Man analysis revealed expression changes within functional groups during seed development. Metabolic pathway network analysis showed that major and minor metabolic pathways regulate one another to ensure regular seed development and nutritive reserve accumulation. We performed gene co-expression network analysis to identify genes that play vital roles in seed development and identified several key genes involved in important metabolic pathways. The transcriptional expression of eight key genes involved in starch and protein synthesis and stress defense was further validated by q RT-PCR. Our results provide new insight into the molecular mechanisms of wheat seed development and the determinants of yield and quality.

关键词： Wheat Transcriptome microarray Differentially expressed genes Grain development

Chlorogenic Acid Metabolism:The Evolution and Roles in Plant Response to Abiotic Stress

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Phyton-International Journal of Experimental Botany 2022年第2期91卷 239-255页

作者： Deka Reine Judesse Soviguidi Rui Pan Yi Liu Liping Rao wenying zhang Xinsun Yang Engineering Research Centre of Ecology and Agricultural Use of Wetland Ministry of EducationHubei Collaborative Innovation Center for Grain IndustryYangtze UniversityJingzhou434025China Hubei Sweetpotato Engineering and Technology Research Centre Hubei Academy of Agricultural SciencesWuhan430064China

During the evolution,plants acquired the ability to synthesize different phenylpropanoid compounds like chlorogenic acid(CGA),which plays vital roles in resistance mechanisms to abiotic *** environmental factors,including heavy metal,cold,heat,ultraviolet(UV)light,drought,and salinity affect the plant physiological processes,resulting in massive losses of agriculture *** plants evolve from green algae to bryophytes,ferns,gymnosperms and angiosperms,phenylpropanoids are produced and accumulated in different tissues,giving the plant the capacity to counteract the harmful effects of the adverse *** have been performed on the metabolic evolution of rosmarinic acid,flavonoids and lignin,showing that the biosynthesis of phenylpropanoids begins in green algae until the emersion of genes found in angiosperms;however,the evolution of the CGA pathway has not yet been *** hypothesize that CGA could also be synthesized from algae to *** the present review,the evolutionary analysis of CGA pathway and the function of this compound in plant tolerance to abiotic stresses are *** analyzes were carried out on CGA-related genes across 37 plant species and revealed that the metabolic pathway starts in algae and gradually increases until it becomes complete in *** key genes exhibited different expression patterns in stress and plant ***,some genes accumulated rapidly during evolution and were more sensitive to environmental stresses,while others appeared only later in *** studies are needed to better understand the evolution of the CGA metabolic pathway in plants under environmentally stressed conditions.

关键词： Chlorogenic acid biosynthesis evolution plant abiotic stress