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Block-layer model for intergrowth structures

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Nano Research 2021年第10期14卷 3629-3635页

作者： Zhicheng Wang siqi Wu Liangwen ji Guanghan Cao Department of Physics Zhejiang Province Key Laboratory of Quantum Technology and DevicesInterdisciplinary Center for Quantum Informationand State Key Lab of Silicon MaterialsZhejiang UniversityHangzhou 310027China Collaborative Innovation Centre of Advanced Microstructures Nanjing UniversityNanjing 210093China Present address:Department of Physics Boston CollegeChestnut HillMA 02467USA

Lattice match and charge transfer between distinct block layers(BLs)play an important role in the formation of an intergrowth *** we propose a simple BL model addressing the different roles of the lattice match and the charge ***-BL charge transfer lowers the internal energy,while lattice match minimizes the elastic energy,both of which together make the intergrowth structure *** model is able to reproduce the lattice parameters precisely for complex iron-based superconductors with intergrowth *** elastic energy and the charge-transfer energy are evaluated with assistance of the first-principles *** work rationalizes the basic principles of BL design for intergrowth structures,which can be utilized not only for finding new superconducting materials but also for investigating other layered materials with various functionalities.

关键词： structural design intergrowth structures lattice match interlayer charge transfer iron-based superconductors

肠内营养支持在胰十二指肠切除术后的疗效观察

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中国临床实用医学 2017年第2期8卷 8-11页

作者：方友发韩涛纪思淇赵冲韩磊锦州医科大学沈阳军区总医院研究生培养基地 110016 解放军沈阳军区总医院肿瘤科解放军沈阳军区总医院肝胆外科

目的评估肠内营养支持对胰十二指肠切除术后的重要作用.方法对2015年3月至2016年12月在解放军沈阳军区总医院接受胰十二指肠切除术（Whipple术）治疗的38例患者的临床资料进行回顾性研究.术后应用肠内营养12例（EN组）,全肠外静脉营... 详细信息

目的评估肠内营养支持对胰十二指肠切除术后的重要作用.方法对2015年3月至2016年12月在解放军沈阳军区总医院接受胰十二指肠切除术（Whipple术）治疗的38例患者的临床资料进行回顾性研究.术后应用肠内营养12例（EN组）,全肠外静脉营养26例（TPN组）,对比2组患者术后炎症指标、营养状况指标及并发症的发生情况.结果 EN组与TPN组在满足机体需要,改善术后营养状况差异无统计学意义（P〉0.05）,但EN组炎症发生率低于TPN组（P=0.02）,并且术后胃肠道功能恢复优于TPN组,术后并发症发生率低于TPN组.结论胰十二指肠切除术后予以肠内营养支持,可以加速肠道功能恢复,减少并发症的发生,有利于患者的术后康复.

关键词：胰十二指肠切除术肠内营养胰腺癌全肠外营养

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三维重建在肝肿瘤切除中的应用

中国临床实用医学 2017年第4期8卷 11-14页

作者：邓川赵冲纪思淇方友发韩磊锦州医科大学解放军沈阳军区总医院研究生培养基地 110016 解放军沈阳军区总医院肝胆外科

目的评价三维重建技术在肝肿瘤切除中的应用价值.方法选取解放军沈阳军区总院肝胆外科收治的36例肝肿瘤患者,所有患者术前均借助三维重建技术定位肿瘤的位置关系,划定手术预切除线,计算肝体积等,术中实际术式与术前三维重辅助拟定的... 详细信息

目的评价三维重建技术在肝肿瘤切除中的应用价值.方法选取解放军沈阳军区总院肝胆外科收治的36例肝肿瘤患者,所有患者术前均借助三维重建技术定位肿瘤的位置关系,划定手术预切除线,计算肝体积等,术中实际术式与术前三维重辅助拟定的手术方式均一致.结果 36例患者中,31例患者接受手术.术后7例患者发生相关并发症,术后1年内7例患者复发,术后1年的存活率为100%.5例未手术的患者均在1年内死亡.结论三维重建技术可清晰地显示肝内部结构,能帮助医师制定精确的手术方案及术前评估,从而实现肝肿瘤的精准切除.

关键词：三维重建肝肿瘤精准肝切除恶性肿瘤

Selective control of secondary alcohols upgrading using Ir-catalyzed cross-coupling strategy

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Science China Chemistry 2024年第3期67卷 914-921页

作者： siqi Yang Zeye Lu jiale ji Qingshu Zheng Tao Tu Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of ChemistryFudan UniversityShanghai 200438China Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

The selective coupling of alcohols is a fascinating yet challenging approach for upgrading alcohols. Herein, we accomplished the controlled production of β-disubstituted ketones or upgraded secondary alcohols via the Ir-catalyzed cross-coupling of secondary alcohols in excellent yields with broad substrate scopes. This selective control was achieved by using an in-situ generated monoNHC-Ir or a tris-NHC-Ir complex as the catalysts, respectively. Mechanistic studies revealed that the delicate balance between dehydrogenation and hydrogenation abilities of these bifunctional catalysts is crucial for achieving different selectivity. The tris-NHC-Ir complex effectively facilitated dehydrogenation of alcohols and hydrogenation of intermediates, leading to the desired upgraded secondary alcohols. Conversely, the high dehydrogenation ability of the mono-NHC-Ir complex promoted the conversion of formed secondary alcohols back to ketones.

关键词： cross-coupling hydrogen-borrowing NHC-Ir complexes selectivity control upgrading of alcohols

Paper-based fluorescent devices for multifunctional assays:Biomarkers detection,inhibitors screening and chiral recognition

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Chinese Chemical Letters 2022年第9期33卷 4405-4410页

作者： Wang Li Xiaoyue Zhang siqi Chen Yibing ji Ruijun Li Department of Analytical Chemistry China Pharmaceutical UniversityNanjing 210009China Key Laboratory of Drug Quality Control and Pharmacovigilance Ministry of EducationNanjing 210009China

The development of a single analytical platform with different functions is highly desirable but remains a challenge at ***,a paper-based device based on fluorescent carbon dots(CDs)functionalized paper/MnO_(2)nanosheets(MnO_(2)NS)hybrid devices(PCD/NS)was proposed for single-device multi-function ***_(2)NS functioned as a fluorescence quencher of CDs and recognizer of H_(2)O_(2)released from the oxidase catalyzed *** recovery would occur after the decomposition of MnO_(2)NS induced by H_(2)O_(2),by which a simple and effective strategy could be developed for fluorescence monitoring multiplex biological ***(XA)sensing,xanthine oxidase(XOD)inhibitors screening analysis and chiral recognition of glucose enantiomers were performed on PCD/NS to investigate the multifunctional application of the paper-based *** means of PCD/NS,XA could be determined in the range of 0.1–40μmol/L with a low detection of limit of 0.06μmol/*** IC_(50)value of allopurinol,the model inhibitor of XOD,was sensitively detected to be 7.4μmol/*** enantiomers were also recognized in terms of the specific fluorescence response to *** work firstly presented a paper-based device capable of biomarkers detection,inhibitors screening and chiral recognition,which enlightened a promising strategy for the construction of multifunctional devices and hold the great potential application in clinical diagnosis and drug discovery.

关键词： Paper-based devices Multifunctional Xanthine Inhibitor screening Chiral recognition

Growth of cucumber seedlings in different varieties as affected by light environment

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International Journal of Agricultural and Biological Engineering 2020年第5期13卷 73-78页

作者： Fang ji siqi Wei Nan Liu Lijun Xu Po Yang Key Laboratory of Agricultural Engineering in Structure and Environment of Ministry of Agriculture and Rural Affairs College of Water Resources&Civil EngineeringChina Agricultural UniversityBeijing 100083China Beijing Lighting Valley Technology Company Beijing 100083China

High-quality cucumber seedlings are a prerequisite for ensuring high yield of *** the continuous increase of cucumber planting area in China,the demand for high-quality cucumber seedlings is also *** of the important ways to improve the quality of cucumber seedlings is to improve the light environment by using artificial light *** this study,three cucumber seedlings(***,*** and ***)were grown for 23 d under eight levels of daily light integral(DLI)at 4.3 mol/(m^(2)·d),8.6 mol/(m^(2)·d),10.1 mol/(m^(2)·d),13.0 mol/(m^(2)·d),5.8 mol/(m^(2)·d),11.5 mol/(m^(2)·d),14.4 mol/(m^(2)·d)and 17.3 mol/(m^(2)·d),*** results showed that when DLI was 14.4 mol/(m^(2)·d),the seedling height,stem diameter,total leaf area and shoot dry/fresh weight of all three cucumber cultivars reached the maximum,while hypocotyl length decreased with the increase of light *** DLI was 14.4 mol/(m^(2)·d),jintong and Xiazhiguang had the highest health index,which were 49.29 and 28.56,respectively,while that of Yunv was 81.59(DLI=14.4 mol/(m^(2)·d)).With the increase of DLI,the photosynthetic capacity of cucumber increases *** highest net photosynthetic rate was shown at DLI of 14.4 mol/(m^(2)·d),while the chlorophyll content of cucumber seedlings of all three cultivars were less affected by *** and Yunv had the highest chlorophyll content when DLI was 8.6 mol/(m^(2)·d)because they were adapted to low-light *** conclusion,the DLI of 14.4 mol/(m^(2)·d)for jintong and Xiazhiguang,while that of 17.3 mol/(m^(2)·d)for Yunv are suggested for the light environment design of factory-cultivated seedling for cucumber.

关键词： cucumber seedling daily light integral(DLI) growth photosynthesis

Macrocyclic-ligand Induced Synthesis of Aryl Ethynides with Divergent Silver（I） Clusters

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Chinese Journal of Chemistry 2017年第12期35卷 1824-1828页

作者： Guangmian ji siqi Zhang Sam C. K. Hau Liang Zhao The Key Laboratory ofBioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education) Department of Chemistry Tsinghua University Beijing 100084 China Department of Chemistry Hong Kong Baptist University Kowloon Hong Kong SAR China

Two structurally characterized metal-cluster-centered supramolecular architectures named [Ag8（1,2-（C= C）2-C6H4）（Py[6]）（CF3CO2）6]·2.5MeOH （1） and [Ag12（1,2,4,5-（C=C）aC6H2）（Py[6]）2（CF3SO3）s]·4MeOH·3H2O （2） are synthesized through the interaction with a bowl-shaped macrocyclic ligand PyI61. Particularly, two dissimilar silver（I） clusters are resulted in 2 within the structure under the influence of the macrocyclic ligand Py[6]. Such dissimilarity of the silver（1） cluster is also reflected on the structural and photophysical differences between 1 and 2.

关键词： macrocycle silver ethynide silver clusters dissimilarity supramolecular architecture

广东省大气污染典型案例特征及其影响因素分析

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安全与环境工程 2017年第2期24卷 58-66页

作者：潘月云陈多宏叶斯琪沈劲嵇萍汪宇谢敏许凡广东省环境监测中心广东广州510308 国家环境保护区域空气质量监测重点实验室广东广州510308 广东省环境保护大气二次污染研究重点实验室广东广州510308

基于广东省空气质量监测和天气形势及气象观测数据,分析了2015年广东省典型大气污染案例中的空气质量污染特征,识别了主导天气形势及气象特征,并结合后向轨迹聚类分析,初步探讨了空气污染与气团来源的关系。结果表明:2015年全省共发生1... 详细信息

基于广东省空气质量监测和天气形势及气象观测数据,分析了2015年广东省典型大气污染案例中的空气质量污染特征,识别了主导天气形势及气象特征,并结合后向轨迹聚类分析,初步探讨了空气污染与气团来源的关系。结果表明:2015年全省共发生13次大气污染事件,呈现冬季(12~2月)主要为高浓度PM_(2.5)污染、春夏秋季(4~10月)高浓度O_3污染事件时有发生的时间特征和重污染区集中于珠三角地区的空间特征;从主导天气形势看,广东省大气污染事件可分为高压出海型、热带低压型、弱槽弱脊型和高压控制型4个类型;通过典型地区后向轨迹聚类分析,发现偏南和偏北方向的污染气团输送与珠三角地区O_3污染关系密切相关,东南和偏西方向的污染气团对PM_(2.5)污染有重要影响。该研究对本地区大气污染演变趋势预测和污染防治具有重要的参考意义。

关键词：大气污染典型案例天气形势后向轨迹广东省

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新型二维函数光子晶体的透射特性

吉林大学学报（理学版） 2017年第4期55卷 985-989页

作者：刘晓静梁禺刘继平孟祥东张斯淇马季李宏刘晗张晓茹吴义恒吴向尧吉林师范大学物理学院吉林四平136000 吉林大学物理学院长春130012 东北师范大学物理学院长春130024 安庆师范学院物理与电气工程学院安徽安庆246133

用平面波展开法研究二维函数光子晶体的TE(transverse electric)波和TM(transverse magnetic)波带隙结构,并与二维传统光子晶体的带隙结构进行比较.通过给出不同介质柱介电常数的函数形式考察二维函数光子晶体带隙结构的变化.结果表明,... 详细信息

用平面波展开法研究二维函数光子晶体的TE(transverse electric)波和TM(transverse magnetic)波带隙结构,并与二维传统光子晶体的带隙结构进行比较.通过给出不同介质柱介电常数的函数形式考察二维函数光子晶体带隙结构的变化.结果表明,二维函数光子晶体存在绝对带隙和半Dirac点.

关键词：二维函数光子晶体带隙结构绝对带隙半Dirac点