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Transport of nanodimers through chemical microchip

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Communications in Theoretical Physics 2020年第1期72卷 130-134页

作者： Shun Zhan ru-Fei Cui Li-yan qiao Jiang-Xing Chen Department of Physics Hangzhou Dianzi UniversityHangzhou310018China Department of Physics Zhejiang UniversityHangzhou310018China

We propose a new microfluid chip for transporting micro and nano *** device consists of chemical stripe pathways full of fuel species,which can be realized in experiments by chemical surface reactions that form spatiotemporal patterns.A mesoscopic model is constructed to simulate the transport dynamics of nanodimers passing through the *** is found that the increases of the volume fraction and radius of the dimer both decrease the first reach time although the underlying mechanisms are different:the volume fraction affects the probability of touching and entering the chip while the radius determines the self-propulsion within the *** transport efficiency is influenced by the size of the particles.

关键词： microchip catalytically sphere dimers chemical pathway multiparticle collision dynamics transport

High-Performance ruCl3 Catalyst Systems for Hydro-Esterification of Methyl Formate and Ethylene

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Chinese Journal of Chemistry 2019年第8期37卷 769-774页

作者： yan-ru Li Zhong-Ning Xu Bing Bai Zhi-qiao Wang Guo-Cong Guo State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China University of Chinese Academy of Sciences Beijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050China

Summary of main observation and conclusion ruCl3 catalyst system has many advantages for the hydro-esterification of methyl formate and ethylene to methyl ***,the unsatisfied performance restricts the development of this *** this work,high-performance ruCl3 catalyst systems (ruCl3-[PPN]Cl-Et4NI and ruCl3-Nal) are firstly reported for this *** ruCl3-[PPN]Cl-Et4NI catalyst system,the conversion of methyl formate and the selectivity to methyl propionate are 93.9% and 90.9% at mild reaction conditions (165 ℃,2.5 MPa),***,a simple inorganic ruCl3-Nal catalyst system achieves 88.8% conversion of methyl formate and 97.6% selectivity to methyl propionate (86.7% yield) at same ***,as a promoter,may inhibit the decomposition of methyl formate and be conducive to the formation of methyl *** effects of solvents and promoters are investigated in *** addition,the reaction mechanism has been also *** is hoped to lay a certain foundation for further industrial application.

关键词： ruCl3 Catalyst Systems Hydro-Esterification Methyl Formate Ethylene

以顺铂为基础的髂内动脉灌注化疗在宫颈癌治疗中的作用

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西北国防医学杂志 2007年第6期28卷 419-421页

作者：李妍芹乔如丽刘志杰赵汝珠兰州军区兰州总医院妇产科甘肃兰州730050

目的：探讨以顺铂为基础的髂内动脉灌注化疗在宫颈癌治疗中的作用。方法：112例中晚期宫颈癌患者，双侧髂内动脉插管，以DDP为基础，辅以BLM、MMC和PYM等灌注化疗，最后以明胶海绵颗粒栓塞。结果：本组病例临床症状均有改善；Ⅰb2‖Ⅱb2... 详细信息

目的：探讨以顺铂为基础的髂内动脉灌注化疗在宫颈癌治疗中的作用。方法：112例中晚期宫颈癌患者，双侧髂内动脉插管，以DDP为基础，辅以BLM、MMC和PYM等灌注化疗，最后以明胶海绵颗粒栓塞。结果：本组病例临床症状均有改善；Ⅰb2‖Ⅱb27例化疗后行手术治疗，完整切除病灶；巨块型癌80．4％（41／51）肿块缩小超过50％，3～4周后92．2％（47／51）宫颈外形可见；颈管型缩小超过50％病例占66．7％（10／15）；97．8％（45／46）溃疡型癌合并出血治疗后出血即刻停止；盆腔疼痛缓解率100％，下肢水肿缓解率100％。结论：以顺铂为基础的髂内动脉灌注化疗对中晚期宫颈癌有非常好的近期疗效，可作为提高治愈率和长期缓解率的常规治疗手段。

关键词：宫颈癌化疗栓塞,治疗性治疗效果

Regulating FUS Liquid-Liquid Phase Separation via Specific Metal Recognition

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Chinese Journal of Polymer Science 2022年第9期40卷 1043-1049页

作者： Fen Li Yiyang Lin yan qiao Beijing National Laboratory for Molecular Sciences(BNLMS) Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Chemical Resource Engineering Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijing 100029China

Liquid-liquid phase separation(LLPS)or biomolecular condensation that leads to formation of membraneless organelles plays a critical role in many biochemical *** study of regulating LLPS is therefore central to the understanding of protein aggregation and disease-relevant *** report a fused in sarcoma protein(FUS)-derived low complexity(LC)sequence that undergoes LLPS in the presence of metal *** LC protein was constructed by fusing a hexhistidine-tag to the N-terminal low complexity domain(the residues 1–165 in QGSY-rich segment)of *** condensation of the intrinsic disordered protein into coacervate droplets was observed in the presence of metal ions that chelate oligohistidine moieties to form protein *** demonstrate the key role of metal ion-histidine coordination in governing LLPS behaviours and the fluidity of biomolecular *** taking advantage of competitive binding using chelators,we show the possibility of regulating dynamic behaviors of disease-relevant protein droplets,and developing a potential approach towards controllable biological encapsulation/release.

关键词： FUS Liquid-liquid phase separation Biomolecular condensate Membraneless organelles Protocells Metal coordination

Post-Processing Time-Aware Optimal Scheduling of Single Robotic Cluster Tools

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IEEE/CAA Journal of Automatica Sinica 2020年第2期7卷 597-605页

作者： Qing Hua Zhu yan qiao NaiQi Wu yan Hou School of Computer Science and Technology Guangdong University of TechnologyGuangzhou 510006China Institute of Systems Engineering Macao University of Science and TechnologyTaipa 999078MacaoChina State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006China

Integrated circuit chips are produced on silicon *** cluster tools are widely used since they provide a reconfigurable and efficient environment for most wafer fabrication *** advances in new semiconductor materials bring about new functionality for integrated *** a wafer is processed in a processing chamber,the wafer should be removed from there as fast as possible to guarantee its high-quality integrated ***,maximization of the throughput of robotic cluster tools is *** work aims to perform post-processing time-aware scheduling for such tools subject to wafer residencytime *** do so,closed-form expression algorithms are derived to compute robot waiting time accurately upon the analysis of particular events of robot waiting for singlearm cluster *** are given to show the application and effectiveness of the proposed algorithms.

关键词： Cluster tool discrete event systems optimization robotic systems scheduling

Optimal Integrated Schedule of Entire Process of Dual-blade Multi-cluster Tools From Start-up to Close-down

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IEEE/CAA Journal of Automatica Sinica 2019年第2期6卷 553-565页

作者： Qinghua Zhu yan qiao Naiqi Wu IEEE the School of Computer Science and Technology Guangdong University of Technology the Helen and John C. Hartmann Department of Electrical and Computer Engineering New Jersey Institute of Technology the Institute of Systems Engineering Macao University of Science and Technology the National Key Laboratory of Precise Electronic Manufacturing Technology and Equipment Guangdong University of Technology

Multi-cluster tools are widely used in majority of wafer fabrication processes in semiconductor industry. Smaller lot production, thinner circuit width in wafers, larger wafer size, and maintenance have resulted in a large quantity of their start-up and close-down transient periods. Yet, most of existing efforts have been concentrated on scheduling their steady *** from such efforts, this work schedules their transient and steady-state periods subject to wafer residency constraints. It gives the schedulability conditions for the steady-state scheduling of dual-blade robotic multi-cluster tools and a corresponding algorithm for finding an optimal schedule. Based on the robot synchronization conditions, a linear program is proposed to figure out an optimal schedule for a start-up period, which ensures a tool to enter the desired optimal steady state. Another linear program is proposed to find an optimal schedule for a closedown period that evolves from the steady state period. Finally,industrial cases are presented to illustrate how the provided method outperforms the existing approach in terms of system throughput improvement.

关键词： Multi-cluster tools robots scheduling transient periods semiconductor manufacturing systems

Superatom-assembled boranes,carboranes,and low-dimensional boron nanomaterials based on aromatic icosahedral B_(12)and C_(2)B_(10)

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Nano Research 2024年第7期17卷 6734-6740页

作者： qiao-qiao yan yan-Fang Wei Qiang Chen Yue-Wen Mu Si-Dian Li Institute of Molecular Science Shanxi UniversityTaiyuan 030006China

Using the experimentally known aromatic icosahedral superatoms I_(h)B_(12)H_(12)2−and D_(5d)1,12-C_(2)B_(10)H_(12)as building blocks and based on extensive density functional theory calculations,we predict herein a series of core–shell superpolyhedral boranes and carboranes in a bottom-up approach,including the high-symmetry Th B_(12)@B_(152)H_(72)2−(2),C2h C_(2)B_(10)@B_(152)H_(72)(3),D_(3d)B_(12)@B_(144)H_(66)(4),I_(h)B_(12)@C_(24)B_(12)0H_(72)2−(6),and D_(5d)C_(2)B_(10)@C_(24)B_(12)0H_(72)(7).More interestingly,the superatom-assembled linear D2h B_(36)H_(32)^(2−)(8),close-packed planar D_(3d)B_(84)H_(60)^(2−)(10),and nearly close-packed core−shell D_(3d)B_(12)@B144H_(6)6(4)can be extended periodically to form the one-dimensional(1D)α-rhombohedral borane nanowire B_(12)H_(10)(Pmmm)(9),two-dimensional(2D)α-rhombohedral monolayer borophane B_(12)H_(6)(P m1)(11),and the experimentally known three-dimensional(3D)α-rhombohedral boron(R m)(12)which can be viewed as an assembly of the monolayer B_(12)H_(6)(11)staggered in vertical direction,setting up a bottom-up strategy to form low-dimensional boron-based nanomaterials from their borane“seeds”via partial or complete *** bonding analyses indicate that the high stability of these nanostructures originates from the spherical aromaticity of their icosahedral B_(12)or C_(2)B_(10)structural units which possess the universal skeleton electronic configuration of 1S21P61D101F8 following the Wade’s n+1 *** infrared(IR)and Raman spectra of the most-concerned neutral B_(12)@B144H_(6)6(4)and C_(2)B_(10)@C_(24)B_(12)0H_(72)(7)are computationally simulated to facilitate their experimental characterizations.

关键词： superatom-assembling bottom-up approach density functional theory superpolyhedral boranes superpolyhedral carboranes borophanes

Influences of a Kind of Groove-blade on the Flow Field in a Compressor Cascade

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Journal of Thermal Science 2006年第3期15卷 193-199页

作者： Hongwei MA Wuying yan qiao TIAN School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100083 ChinaNational Key Laboratory on Aero-Engines Beijing 100083 China

This paper presents an experimental investigation of effects of a kind of streamwise-grooved blades on the flowfield in a compressor *** flow field downstream the cascade and the boundary layer on the suctionsurface were measured using a mini 5-hole pressure probe at different incidence *** flow field in thegroove cascade was compared with that in the smooth *** measurement results indicate that:(1)thegroove surface can restrain the development of the boundary layer on the suction surface;(2)the grooves canrestrain the radial migration of the low-energy fluids in the boundary layer on the suction surface;(3)the grooveblades can reduce total pressure loss and flow blockage in the cascade at the incidence angles of 0°,5°and 8°;(4)the maximum benefit of 8.6% loss reduction was obtained at the incidence angle of 5° while negative benefit of-3.0% loss reduction occurred at the incidence angle of-5°.

关键词： groove blade compressor cascade secondary flow flow loss boundary layer

Geochemical Characteristics of Eolian Deposits on the Eastern Margin of the Tibetan Plateau and Implications for Provenance

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Acta Geologica Sinica(English Edition) 2014年第3期88卷 963-973页

作者： QI Lin qiao yan-song School of Earth Sciences and Resources China University of Geosciences Institute of Geomechanics Chinese Academy of Geological Sciences Key Laboratory of Neotectonic Movement and Geohazard

Eolian dust deposition is intimately related to atmospheric circulation and environmental setting of the source region,and therefore is an invaluable tool for studying the evolutionary history of atmospheric circulation patterns and paleoclimatic *** the provenance of any eolian deposit is crucial not only for reconstructing the paleoenvironmental history of the dust source region,but also for understanding the paleoclimatic significance of various *** and paleosol samples from the Garze region on the eastern margin of the Tibetan Plateau （TP） were analyzed for their elemental （major and trace elements） and isotopic （Sm-Nd） geochemistry and compared with those of Northern Chinese （NC） loess formed at the same *** results show that the geochemical compositions of the Garze loess and paleosol samples are similar to those eolian deposits on the Chinese Loess Plateau （CLP）,and also resemble the average *** indicates that the eolian deposits on the eastern margin of the TP were derived from well-mixed sedimentary protoliths that had undergone numerous upper crustal recycling processes,just as with the CLP loess ***,compared with NC loess,the Garze samples have higher ∑REE,Li,Rb,Zr,Cs,Hf and Bi concentrations,higher TiO2/Al2O3,Hf/Nb,La/Nb,Th/Nb and lower K2O/TiO2,Zr/Hf,Ba/Rb *** the Sm-Nd isotopic geochemistry,εNd（0） and 147Sm/144Nd values of Garze loess and paleosol samples are clearly lower than the NC *** higher Bi,Zr and Hf concentrations are relevant to the widely distributed acid-magmatic rocks in this region,whereas the higher contents of Li,Cs,Rb are attributed to the high background values of the *** geochemical characteristics of the Garze loess and paleosol samples further prove that the local glacial and other Quaternary detrital sediments are predominantly the contributors for the eolian deposits on the eastern margin of the *** element concentrations and their ratios in the Garze loess and

关键词： Quaternary eolian sedimentology geochemistry provenance Tibetan paleoclimate,Sichuan province