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Responsive Janus Structural Color Hydrogel Micromotors for Label-Free Multiplex Assays

Research 2021年第1期2021卷 1183-1191页

作者： huan Wang Lijun cai Dagan Zhang Luoran Shang Yuanjin Zhao Department of Clinical Laboratory Institute of Translational MedicineThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210002China The Eighth Affiliated Hospital Sun Yat-Sen UniversityShenzhen 518033China State key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Shanghai Xuhui Central Hospital Zhongshan-Xuhui Hospitaland The Shanghai Key Laboratory of Medical EpigeneticsThe International Co-Laboratory of Medical Epigenetics and Metabolism(Ministry of Science and Technology)Institutes of Biomedical SciencesFudan UniversityShanghai 200032China Chemistry and Biomedicine Innovation Center Nanjing UniversityNanjing 210023China

Micromotors with self-propelling ability demonstrate great values in highly sensitive *** novel micromotors to achieve label-free multiplex assay is particularly intriguing in terms of detection ***,structural color micromotors(SCMs)were developed and employed for this *** SCMs were derived from phase separation of droplet templates and exhibited a Janus structure with two distinct sections,including one with structural colors and the other providing catalytic selfpropelling ***,the SCMs were functionalized with ion-responsive aptamers,through which the interaction between the ions and aptamers resulted in the shift of the intrinsic color of the *** was demonstrated that the SCMs could realize multiplex label-free detection of ions based on their optical coding capacity and responsive ***,the detection sensitivity was greatly improved benefiting from the autonomous motion of the SCMs which enhanced the ion-aptamer *** anticipate that the SCMs can significantly promote the development of multiplex assay and biomedical fields.

关键词： template autonomous structural

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Research on Wet Steam Spontaneous Condensing Flows Considering Phase Transition and Slip

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Journal of Thermal Science 2013年第4期22卷 320-326页

作者： ke CUI huan-long CHEN Yan-ping SONG Hiroharu OYAMA School of Energy Science and Engineering Harbin Institute of Technology Mitsubishi Heavy Industries LTD

A new dual-fluid model considering phase ansition and velocity slip was proposed in this paper and the Cunningham correction was used in the droplet resistance calculation. This dual-fluid model was applied to the numerical simulations of wet steam flow in a 2D LAVAL nozzle and in the White cascade respectively. The results of two simulations demonstrate that the model is reliable. Meanwhile, the spontaneous condensing flow in White cascade was analyzed and it infers that the irreversible loss caused by condensation accounts for the largest share （about 8.78% of inlet total pressure） in total pressure loss while the loss caused by velocity slip takes the smallest share （nearly 0.42%）, and another part of total pressure loss caused by pneumatic factors contributes a less share than condensation, i.e. almost 3.95% of inlet total pressure.

关键词： dual-fluid model wet steam spontaneous condensing flow LAVAL nozzle White cascade.

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Access to 3-alkylselenindoles by multicomponent reaction of indoles,selenium powder and unactivated alkyl halides under transition-metal-free conditions

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Chinese Chemical Letters 2022年第9期33卷 4303-4305页

作者： huan Liu Zhong-Jian cai Shun-Jun Ji key Laboratory of Organic Synthesis of Jiangsu Province College of ChemistryChemical Engineering and Materials Science&Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow UniversitySuzhou 215123China

Herein,we reported a convenient and efficient multicomponent reaction of indoles,selenium powder and unactivated alkyl *** protocol provides a practical,and facile approach for the synthesis of 3-alkylselenindole *** advantages of this strategy include mild and transition-metal-free conditions,broad functional group tolerance,the use of simple and easily accessible seleniium powder and alkyl halides as coupling *** importantly,the reaction proceeded smoothly with a large scale(>10 g,>90%yield),which further highlighted the potential application of this selenation strategy.

关键词： Selenium 3-Alkylselenindole Indole Selenization

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Wronskian Form of N-Solitonic Solution for a Variable-Coefficient Korteweg-de Vries Equation with Nonuniformities

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Communications in Theoretical Physics 2008年第11期50卷 1185-1188页

作者： cai ke-Jie TIAN Bo ZHANG Cheng ZHANG huan MENG Xiang-Hua LU Xing GENG Tao LIU Wen-Jun School of Science P.O. Box 122 Beijing University of Posts and Telecommunications Beijing 100876 China State key Laboratory of Software Development Environment Beijing University of Aeronautics and Astronautics Beijing 100083 China key Laboratory of Optical Communication and Lightwave Technologies Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

By the symbolic computation and Hirota method, the bilinear form and an auto-Backlund transformation for a variable-coemcient Korteweg-de Vries equation with nonuniformities are given. Then, the N-solitonic solution in terms of Wronskian form is obtained and verified. In addition, it is shown that the （N - 1）- and N-solitonic solutions satisfy the auto-Backlund transformation through the Wronskian technique.

关键词： variable-coefficient KdV equation bilinear auto-Bocklund transformation N-solitonic solution Wronskian determinant

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基于一阶差分光谱的海水硝酸盐氮与亚硝酸盐氮测量方法

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光谱学与光谱分析 2025年第1期45卷 45-51页

作者：梁星辉冯巍巍蔡宗岐王焕卿杨剑炼中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室山东烟台264003 山东省海岸带环境过程重点实验室山东烟台264003 中国科学院大学北京100049

硝酸盐氮与亚硝酸盐氮是海洋水质监测的重点参数,也是研究海洋氮循环的重要参考。紫外吸收光谱法操作简单,响应快速,适用于多种水质参数监测,但测量中硝酸盐氮与亚硝酸盐氮存在混叠干扰以及海水离子干扰。提出了一种硝酸盐氮与亚硝酸盐... 详细信息

硝酸盐氮与亚硝酸盐氮是海洋水质监测的重点参数,也是研究海洋氮循环的重要参考。紫外吸收光谱法操作简单,响应快速,适用于多种水质参数监测,但测量中硝酸盐氮与亚硝酸盐氮存在混叠干扰以及海水离子干扰。提出了一种硝酸盐氮与亚硝酸盐氮快速测量方法,对光谱进行一阶差分等预处理,使用相关系数搜索进行波段优化,使用BP神经网络进行浓度反演,模型的预测值与真实值线性相关系数为0.998。与国外同类设备进行了比对测试,两者线性相关系数为0.982。参加了烟台市海洋环境监测预报中心2023年夏季航次,进行了应用测试,与实验室方法进行了比对分析,两者线性相关系数为0.902,说明本方法能够实现海水硝酸盐氮与亚硝酸盐氮的快速测量,为后续原位监测仪器的研制提供参考。

关键词：硝酸盐氮亚硝酸盐氮紫外吸收光谱一阶差分 BP神经网络

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Typical Oxygen Isotope Profile of Altered Oceanic Crust Recorded in Continental Intraplate Basalts

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Journal of Earth Science 2017年第4期28卷 578-587页

作者： huan Chen Qun-ke Xia Etienne Deloule Jannick Ingrin School of Earth Sciences Zhejiang UniversityHangzhou 310027China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China UMET UMR CNRS 8207Universite de Lillel59655 Villeneuve d'AscqFrance CRPG UMR 7358CNRS Universite de Lorraine54501 Vandoeuvre-les NancyFrance

Recycled oceanic crust （ROC） has long been suggested to be a candidate introducing en- riched geochemical signatures into the mantle source of intraplate basalts. The different parts of oceanic crust are characterized by variable oxygen isotope compositions （δ^18O=3.7‰ to 13.6‰）. To trace the sig- natures of ROC in the mantle source of intraplate basalts, we measured the δ^18O values of clinopyroxene （cpx） phenocrysts in the Cenozoic basalts from the Shuangliao volcanic field, NE China using secondary ion mass spectrometer （SIMS）. The δ^18O values of the Shuangliao cpx phenocrysts in four basalts ranging from 4.10‰ to 6.73‰ （with average values 5.93‰±0.36‰, 5.95‰±0.30‰0, 5.58‰±=0.66‰e, and 4.55‰±= 0.38‰, respectively） apparently exceed those of normal mantle-derived cpx （5.6‰±0.2‰） and fall in the typical oxygen isotope range of altered oceanic crust. The δ^18O values display the negative correlations with the Eu, Sr anomalies of whole rocks and erupted ages, demonstrating that （1） the ROC is the main enriched component in the mantle source of the Shuangliao basalts and （2） the contributions of ROC var- ied with time. The basalt with the lowest δ^18O value is characterized by a significant K positive anomaly, highest H2O/Ce and Ba/Th ratios, suggesting that the mantle source of basalts with low δ^18O can also in- clude a water-rich sediment component that may be the trigger for partial melting. Considering the continuous subduction of the Pacific slab, the temporal heterogeneity of the source components is likely to be caused by the Pacific slab subduction.

关键词： continental basalt oxygen isotope recycled oceanic crust Pacific slab eastern China.

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Theoretical Studies on the Hydrogen Bond Transfer and Proton Transfer between Anamorphoses of the Dihydrated Glycine Complex

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Chinese Journal of Structural Chemistry 2007年第5期26卷 580-586页

作者： WANG ke-Cheng MENG Xiang-Jun SHI Jin LI Bing-huan Department of Chemistry Tangshan Teacher＇s College Tangshan 063000 China

The conversion between anamorphoses of the dihydrated glycine complex was studied by means of B3LYP/6-31＋＋G^＊＊. It was found that proton transfer was accompanied by hydrogen bond transfer in the process of conversion between different kinds of anamorphoses. With proton transfer, the electrostatic action was notably increased and the hydrogen-bonding action was evidently strengthened when the dihydrated neutral glycine complex converts into dihydrated zwitterionic glycine complex. The activation energy required for hydrogen bond transfer between dihydrated neutral glycine complexes is very low （6.32 kJ·mol^-1）; however, the hydrogen bond transfer between dihydrated zwitterionic glycine complexes is rather difficult with the required activation energy of 13.52 kJ·mol^-1 due to the relatively strong electrostatic action. The activation energy required by proton transfer is at least 27.33 kJ·mol^-1, higher than that needed for hydrogen bond transfer. The activation energy for either hydrogen bond transfer or proton transfer is in the bond-energy scope of medium-strong hydrogen bond, so the four kinds of anamorphoses of the dihydrated glycine complex could convert mutually.

关键词： intermolecular interaction B3LYP glycine,hydrogen bond transfer proton transfer

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Functional Xeno Nucleic Acids for Biomedical Application

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Chemical Research in Chinese Universities 2022年第4期38卷 912-918页

作者： TU Tingting huan Shuangyan ke Guoliang ZHANG Xiaobing State key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha410082P.R.China

Functional nucleic acids(FNAs)refer to a type of oligonucleotides with functions over the traditional genetic roles of nucleic acids,which have been widely applied in screening,sensing and imaging ***,the potential application of FNAs in biomedical field is still restricted by the unsatisfactory stability,biocompatibility,biodistribution and immunity of natural nucleic acids(DNA/RNA).Xeno nucleic acids(XNAs)are a kind of nucleic acid analogues with chemically modified sugar groups that possess improved biological properties,including improved biological stability,increased binding affinity,reduced immune responses,and enhanced cell penetration or tissue *** the last two decades,scientists have made great progress in the research of functional xeno nucleic acids,which makes it an emerging attractive biomedical application *** this review,we summarized the design of functional xeno nucleic acids and their applications in the biomedical field.

关键词： Functional nucleic acid Xeno nucleic acid Chemical modification Biomedical application

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Generalized Krasnoselskii-Mann-Type Iteration for Nonexpansive Mappings in Banach Spaces

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Journal of the Operations Research Society of China 2021年第1期9卷 195-206页

作者： You-cai Zhang ke Guo Tao Wang School of Mathematics and Information China West Normal UniversityNanchong 637002SichuanChina

The Krasnoselskii-Mann iteration plays an important role in the approximation of fixed points of nonexpansive mappings,and it is well known that the clas-sic Krasnoselskii-Mann iteration is weakly convergent in Hilbert *** weak convergence is also known even in Banach ***,Kanzow and Shehu pro-posed a generalized Krasnoselskii-Mann-type iteration for nonexpansive mappings and established its convergence in Hilbert *** this paper,we show that the generalized Krasnoselskii-Mann-type iteration proposed by Kanzow and Shehu also converges in Banach *** applications,we proved the weak convergence of generalized proximal point algorithm in the uniformly convex Banach spaces.

关键词： Krasnoselskii-Mann-type iteration Nonexpansive mappings Weak convergence Accretive operator proximal pointalgorithm Banach spaces

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煤表面含氧官能团吸附氮化物的模拟计算研究

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原子与分子物理学报 2025年第2期42卷 1-7页

作者：孙潇镝唐克王聚财富添洪新辽宁工业大学化学与环境工程学院锦州121001

煤表面六种常见的官能团结构单元包括酚羟基Ph-OH、羧基-COOH、羰基-C=O、醚键-O-、醇羟基R-OH和烷基R,采用巨正则蒙特卡洛(GCMC)和密度泛函理论(DFT)从原子层面模拟计算煤表面官能团对苯胺、吡啶、喹啉三种典型氮化物的吸附性能.通过... 详细信息

煤表面六种常见的官能团结构单元包括酚羟基Ph-OH、羧基-COOH、羰基-C=O、醚键-O-、醇羟基R-OH和烷基R,采用巨正则蒙特卡洛(GCMC)和密度泛函理论(DFT)从原子层面模拟计算煤表面官能团对苯胺、吡啶、喹啉三种典型氮化物的吸附性能.通过计算分析前线轨道、吸附能及分子间吸附距离等参数,探究三种氮化物在煤表面不同官能团上的吸附机理,结果表明煤表面模型上各官能团对三种氮化物的吸附强弱顺序均为:-COOH>R-OH>Ph-OH>-C=O>-O->R,三种氮化物在煤表面官能团的吸附强弱顺序为:吡啶>喹啉>苯胺.

关键词：煤官能团氮化物模拟吸附

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