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Acta Geologica Sinica(English Edition) 2015年第5期89卷 1775-1776页

作者： WU Wenxian DING Jun WANG Yonghua MENG Fujun ASKAR deng ke Chengdu Center of China Geological Survey College of Earth Sciences Chengdu University of Technology Yunnan Exploration Institute of Geology and Mineral Resources

The newly-discovered Xiyi lead-zinc deposit is a large deposit located in the north central Baoshan block of the southern Sanjiang metallogenic belt section, Southwest *** surface of the deposit is mainly covered by eluvial-deluvial lateritic layer, without any mineralized outcrops. The main concealed orebody V3 is buffed in the depth of 300-500m. The orebodies are controlled by certain stratigraphic horizons, and most are cut by strata with a high angle, while a few occur along the strata. The direct wall rocks are calcisiltite, calclithite, bioclastic calcarenite,

关键词： Zn Metallogenic Prediction of the Peripheral Areas of the Xiyi Concealed Lead-Zinc Deposit in Baoshan City Yunnan Province AMT Pb

Electric field controlled superlubricity of fullerene-based host–guest assembly

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Nano Research 2023年第1期16卷 583-588页

作者： Shanchao Tan Hongyu Shi Xin Du Kunpeng Wang Haijun Xu Junhua Wan ke deng Qingdao Zeng Yuhong Liu State key Laboratory of Tribology Tsinghua UniversityBeijing 100084China CAS key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijing 100190China College of Chemical Engineering Jiangsu Key Lab of Biomass-based Green Fuels and ChemicalsNanjing Forestry UniversityNanjing 210037China key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal UniversityHangzhou 310012China Center of Materials Science and Optoelectonics Engineering University of Chinese Academy of SciencesBeijing 100049China

Controlling friction by the electric field is a promising way to improve the tribological performance of a variety of movable mechanical *** this work,the assembly structure and microscale superlubricity of a host–guest assembly are effectively controlled by the electric *** the help of the scanning tunneling microscopy(STM)technique,the host–guest assembly structures constructed by the co-assembly of fullerene derivative(Fluorene-C60)with macrocycles(4B2A and 3B2A)are explicitly *** with density functional theory(DFT),the distinct different assembly behaviors of fullerene derivatives are revealed at different probe biases,which is attributed to the molecular polarity of the fullerene *** the control on the adsorption behavior,the friction coefficient of host–guest assembly is demonstrated to be controllable in the electric field by using atomic force microscopy(AFM).At positive probe bias,the friction coefficient of the host–guest assembly is significantly reduced and achieves superlubricity(μmin=0.0049).The efforts not only help us gain insight into the host–guest assembly mechanism controlled by the electric field,but also promote the further application of fullerene in micro-electro-mechanical systems(MEMS).

关键词： superlubricity electric field friction control fullerene derivative host-guest assembly

Natural orifice transluminal endoscopic wedge hepatic resection with a water-jet hybrid knife in a non-survival porcine model

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World Journal of Gastroenterology 2011年第7期17卷 926-931页

作者： Hong Shi Sheng-Jun Jiang Bin Li deng-ke Fu Pei Xin Yong-Guang Wang Institute of Minimally Invasive Medicine Tongji University Shanghai200092 China Department of Minimally Invasive Sur-gery Beijing Chuiyangliu Hospital Beijing 100022 China

AIM: To explore the feasibility of a water-jet hybrid knife to facilitate wedge hepatic resection using a natural orifice transluminal endoscopic surgery (NOTES) approach in a non-survival porcine model. METHODS: The Erbe Jet2 water-jet system allows a needleless, tissue-selective hydro-dissection with a pre-selected pressure. Using this system, wedge hepatic resection was performed through three natural routes (trans-anal, trans-vaginal and trans-umbilical) in three female pigs weighing 35 kg under general anesthesia. Entry into the peritoneal cavity was via a 15-mm incision using a hook knife. The targeted liver segment was marked by an APC probe, followed by wedge hepatic resection performed using a water-jet hybrid knife with the aid of a 4-mm transparent distance soft cap mounted onto the tip of the endoscope for holding up the desired plane. The exposed vascular and ductal structures were clipped with Endoclips. Hemostasis was applied to the bleeding cut edges of the liver parenchyma by electrocautery. After the procedure, the incision site was left open, and the animal was euthanized followed by necropsy. RESULTS: Using the Erbe Jet2 water-jet system, trans-anal and trans-vaginal wedge hepatic resection was successfully performed in two pigs without laparoscopic assistance. Trans-umbilical attempt failed due to an unstable operating platform. The incision for peritoneal entry took 1 min, and about 2 h was spent on excision of the liver tissue. The intra-operative blood loss ranged from 100 to 250 mL. Microscopically, the hydro-dissections were relatively precise and gentle, preserving most vessels. CONCLUSION: The Erbe Jet2 water-jet system can safely accomplish non-anatomic wedge hepatic resection in NOTES, which deserves further studies to shorten the dissection time.

关键词： Natural orifice transluminal endoscopic surgery Hepatic resection Water-jet Hybrid knife Triangulation

Synthesis and biological evaluation of nitric oxide-releasing matrine derivatives as anticancer agents

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Chinese Chemical Letters 2010年第4期21卷 381-384页

作者： He, Li Qin Liu, Jing Yin, deng ke Zhang, Yi Hua Wang, Xiao Shan China Pharmaceut Univ Ctr Drug Discovery Nanjing 210009 Peoples R China Anhui Univ Tradit Chinese Med Anhui Key Lab Modernized Chinese Mat Med Hefei 230031 Anhui Peoples R China

A series of furoxan-based nitric oxide-releasing matrine derivatives(10a-f) were *** biological evaluation showed that compounds 10a,10b,10e and 10f had stronger cytotoxic activities than 5-fluorouracil against human ... 详细信息

关键词： Matrine Furoxan Anti-tumor activity HepG2

Synthesis and biological evaluation of novel phenothiazine derivatives as non-peptide arginine vasopressin V2 receptor antagonists

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Chinese Chemical Letters 2015年第5期26卷 627-630页

作者： Shuang Zhi Shuai Mu Ying Liu Min Gong Ping-Bao Wang deng-ke Liu School of Chemical Engineering and Technology Tianjin University Tianjin Institute of Pharmaceutical Research

A series of novel phenothiazine derivatives was synthesized and tested for arginine vasopressin receptor antagonist activity. They were synthesized as novel arginine vasopressin receptor antagonists from phenothiazine as a scaffold via successive acylation, reduction and acylation reactions. Their structures were characterized by ^1H NMR, ^13C NMR and HRMS, and biological activity was evaluated by in vitro and in vivo studies. The in vitro binding assay indicated that several compounds are potent selective V2 receptor antagonists. Compounds with promising binding affinity to V2 receptors were selected to conduct the in vivo diuretic studies on Sprague-Dawley rats. Among them, 1n, 1r, It and 1v exhibited excellent diuretic activity, especially 1 r and 1v. Therefore, 1 r and 1v are potent novel AVP V2 receptor antagonist candidates.

关键词： Arginine vasopressin V2 receptor antagonist Phenothiazine derivatives Synthesis Biological activities

UNSTEADY FLOW OF NON-NEWTONIAN VISCO-ELASTIC FLUID IN DUAL-POROSITY MEDIA WITH THE FRACTIONAL DERIVATIVE

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Journal of Hydrodynamics 2009年第5期21卷 705-713页

作者： SHAN Lian-tao TONG deng-ke XUE Li-li School of Petroleum Engineering China University of Petroleum Dongying 257061 China Research Institute of Geological Sciences Shengli Oilfield Company Sinopec Dongying 257015 School of Mathematics and Computational Sciences China University of Petroleum Dongying 257061 China

The fractional order derivative was introduced to the seepage flow research to establish the relaxation models of non-Newtonian viscoelastic fluids in dual porous media. The flow characteristics of non-Newtonian viscoelastic fluids through a dual porous medium were studied by using the Hankel transform, the discrete Laplace transform of sequential fractional derivatives and the generalized Mittag-Leffler function. Exact solutions were obtained for arbitrary fractional order derivative. The long-time and short-time asymptotic solutions for an infinite formation were also resulted. The pressure transient behavior of non-Newtonian viscoelastic fluids flow through an infinite dual porous media was studied by using Stehfest＇s inversion method of the numerical Laplace transform. It shows that the characteristics of the fluid flow are appreciably affected by the order of the fractional derivative.

关键词： fractional calculus non-Newtonian visco-elastic fluids dual porous media exact solution

Pyridine-induced interfacial structural transformation of tetraphenylethylene derivatives investigated by scanning tunneling microscopy

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Nano Research 2018年第11期11卷 5823-5834页

作者： Xuan Peng Linxiu Cheng Xiaoyang Zhu Yanfang Geng Fengying Zhao Kandong Hu Xuan Guo ke deng Qingdao Zeng CAS key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology (NCNST) No. 1 ZhongguancunBeiyitiao Beijing 100190 China Jiangxi College of Applied Technology Ganzhou 341000 China Engineering Research Center of Nano-Geo Materials of Ministry of Education China University of Geosciences Wuhan 430074 China

The two-dimensional self-assembly behaviors of tetraphenylethylene (TPE) molecules are significant for further applications, but reports are rare. The self-assembled structures of two C2-symmetry TPE derivatives (H4TCPE and H4ETTC) possessing propeller structures and their stimulus responses to the addition of vinylpyridine derivatives were thoroughly studied with the assistance of scanning tunneling microscopy (STM) technique in combination with density functional theory (DFT) calculations. Although their chemical structures were similar, the H4TCPE and H4ETTC molecules self-assembled into closely packed lamellar and quadrilateral structures, respectively, at the 1-heptanoic acid/HOPG interface. After the addition of pyridine derivatives (DPE, PEBP-C4, and PEBP-C8), H4TCPE and H4ETTC showed different responsiveness resulting in different co-assembly structures. The results indicated that the structures of pyridine derivatives—including backbones and substituents—affected the intermolecular interactions of both H4TCPE/pyridine and H4ETTC/pyridine systems. The modification of the self-assembly behaviors of propeller-shaped H4TCPE and H4ETTC would contribute to the construction of more complex multilevel nanostructures.

关键词： tetraphenylethylene derivatives propeller structures self-assembly pyridine hydrogen bonding scanning tunneling microscopy (STM)

Specific distribution of orientated C70-fullerene triggered by solvent-tuned macrocycle adlayer

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Nano Research 2017年第3期10卷 991-1000页

作者： Yanfang Geng Ping Li Jindong Xue Dapeng Luo Junyong Zhang Lijin Shu ke deng Jingli Xie Qingdao Zeng CAS key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience National Cen ter for Nanoscience and Technology (NCNST) No. 11 Beiyitiao Zhongguancun Beijing 100190 China key Laboratory of Organosilicol Chemistry and Material Technology of Ministry of Education Hangzhou Normal University Hangzhou 310012 China College of Biological Chemical Science and Engineering Jiaxing University Jiaxing 314001 China

The precise localization of organic molecules in controllable positions is an important step towards constructing functional nanostructures via the bottom-up strategy. Herein, supramolecularly organized C70-fullerene assemblies on macrocycle-modified surfaces were investigated using scanning tunneling microscopy （STM） in combination with theoretical calculations. The results revealed that an up-assembly of C70-fullerene adlayers was successfully formed on top of the bottom macrocycle arrays. Density functional theory （DFT） calculations confirmed that the macrocycle networks along with the co-adsorbed solvent 1-phenyloctane served as a selective template for trapping C70-fullerene molecules in the spectral sites and acted as a support for the C70-fullerene molecules. The periodical distribution of the C70-fullerene molecules should facilitate understanding of the strong dependence of the arrangement of C70-fullerene upon the specific interactions （apart from spatial recognition） derived from modification of the sub-monolayers.

关键词： C70-fullerene macrocycle supramolecular assembly scanning tunnelingmicroscopy

Self-assembled nanostructures of a series of linear oligothiophene derivatives adsorbed on surfaces

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Chinese Chemical Letters 2023年第2期34卷 630-635页

作者： Xuan Peng Ting Meng Lilei Wang Linxiu Cheng Wenchao Zhai ke deng Chang-Qi Ma Qingdao Zeng CAS key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Printable Electronics Research Center Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

Many previous studies have shown that the molecular structures of oligothiophene derivatives including molecular skeleton and alkyl chains have a significant effect on their self-assemblies on the *** this work, a series of linear oligothiophene derivatives(DCV-n T-Hex, n = 3~11) modified with terminal dicyanovinyls and alkyl chains were adopted to further investigate the different assembly behaviors at liquid-solid interface by scanning tunneling microscopy(STM). Interestingly, via the hydrogen bonding and van der Waals interactions, DCV-3T-Hex formed zigzag and flower structures while DCV-n T-Hex(n = 4~11) formed lamellar structures. Density functional theory(DFT) calculations show that for the most energetically favorable configurations of DCV-n T-Hex, the different distribution of alkyl chains affected intermolecular interactions, and ultimately led to the different assembled structures. The zigzag and flower structures of DCV-3T-Hex had preferential thermodynamic stability compared to other structures of DCV-n T-Hex(n = 4~11). In addition, self-assembled nanostructures of DCV-n T-Hex molecules with even numbers(n = 4, 6, 8, 10) were overall more stable than those with odd numbers(n = 5, 7, 9,11), and the stability of the self-assembled structure was weakened with the extension of the molecular backbone, individually. The orientation of molecular alkyl chains was found to greatly affect the intermolecular interactions and thus leading to various self-assembly structures of DCV-n T-Hex(n = 3~11).

关键词： Oligothiophene derivatives Scanning tunneling microscopy Supramolecular self-assembly Van der Waals force DFT calculations

Synthesis and activity evaluation of some novel derivatives of 4,5,6,7-tetrahydrothieno [3,2-c]-pyridine

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Chinese Chemical Letters 2008年第6期19卷 689-692页

作者： Die Cheng deng ke Liu MO Liu Ying Liu Wei Ren Xu Chang Xiao Liu Department of Pharmaceutical Engineering School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China State key Laboratory of Pharmacokinetics and Pharmacodynamics Tianjin Institute of Pharmaceutical Research Tianjin 300193 China

Two series of novel derivatives of4,5,6,7-tetrahydrothieno [3,2-c]pyridine were synthesized and structurally characterized by 1^H NMR and MS. Their in vivo antiplatelet aggregation activities were evaluated.

关键词： Thienopyridines Antiplatelet aggregation activities P2Y12 receptors