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Sabatieria sinica ***.(Comesomatidae,Nematoda) from Jiaozhou Bay,China

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Journal of Oceanology and Limnology 2020年第2期38卷 539-544页

作者： ZHAI Hongxiu wang chunming HUANG Yong College of Life Sciences Liaocheng UniversityLiaocheng 252059China Key Laboratory of Ecology and Biodiversity of Shandong Colleges and University Liaocheng 252059China

A new free-living marine nematode species of the genus Sabatieria was documented from the sediment of the Jiaozhou Bay,Qingdao,China,and it has been named Sabatieria sinica *** is characterized by homogeneous cuticle without lateral differentiation,relatively short cephalic setae,spiral amphideal fovea with 2–2.25 turns;thick spicules with a mid constriction or joint,gubernaculum with a long straight dorso-caudal apophyses,and 6–7 prominent papillar precloacal *** new species could be distinguished from other congener species by the combination of its characteristics:body size,length of cephalic setae,number of amphid turns,structures of spicules and gubernaculum,and type and number of precloacal *** update dichotomous key is provided for nine species of pulchra group of Sabatieria including the new species.

关键词： new species free-living marine nematode taxonomy Jiaozhou Bay

Microstructures and fatigue properties of electron beam welds with beam oscillation for heavy section TC4-DT alloy

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Chinese Journal of Aeronautics 2014年第4期27卷 1015-1021页

作者： Fu Pengfei Mao Zhiyong Zuo Congjin wang Yajun wang chunming College of Materials Science and Engineering Huazhong University of Science and Technology Science and Technology on Power Beam Processes Laboratory Beijing Aeronautical Manufacturing Technology Research Institute Institute of Mechanical Engineering and Automation Beihang University

With the development of the manufacturing technology, electron beam welding（EBW） is capable of producing titanium alloy large parts in aero fields. To increase the applications and improve the properties, EBW with beam oscillation was investigated on TC4-DT alloy with50 mm thickness. We detected the welding samples by X-ray NDT, observed the microstructures of the welds, and tested the fatigue properties of the joints. The results showed that EBW with beam oscillation improved the weld morphology as well as welding quality, and the microstructure homogeneity of the welds and HAZ along the weld penetration were also improved. The fatigue properties of the joints with beam oscillation were more excellent than those of conventional EBW, even equal to those of the base metal under high stresses. The influences of the processing and the microstructure on the properties with beam oscillation were discussed.

关键词： Beam oscillation Electron beam welding(EBW) Fatigue Microstructure Titanium alloy

Multicomponent Seismic Data Reconstruction via Anti-Aliasing Vector POCS Method

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Journal of Earth Science 2024年第4期35卷 1385-1392页

作者： Fan Li Jianjun Gao Yun wang chunming wang Sian Hou School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China Research Institute of Petroleum Exploration and Development Petro ChinaBeijing 100083China

0 INTRODUCTION Due to the ability to comprehensively utilize P and S wave information,multi-component seismic exploration has already played an important role in fracture detection,lithology prediction,fluid identification,etc.,and it has also become an important technology for complex reservoir exploration(Yuan et al.,2021;Stewart et al.,2003).

关键词： reservoir Seismic prediction

Electroless deposition of Au nanoparticles on reduced graphene oxide/polyimide film for electrochemical detection of hydroquinone and catechol

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Frontiers of Materials Science 2017年第3期11卷 262-270页

作者： Xuan SHEN Xiaohong XIA Yongling DU chunming wang College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China

An electrochemical sensor for determination of hydroquinone （HQ） and catechol （CC） was developed using Au nanoparticles （AuNPs） fabricated on reduced graphene oxide/polyimide （PIIRGO） film by electroless deposition. The electrochemical behaviors of HQ and CC at PIIRGO-AuNPs electrode were investigated by cyclic voltammetry （CV） and differential pulse voltammetry （DPV）. Under the optimized condition, the current responses at PI/RGO-AuNPs electrode were linear over ranges from 1 to 654 mol/L for HQ and from 2 to 1289 mol/L for CC, with the detection limits of 0.09 and 0.2 mollL, respectively. The proposed electrode exhibited good reproducibility, stability and selectivity. In addition, the proposed electrode was successfully applied in the determination of HQ and CC in tap water and the Yellow River samples.

关键词： electroless Au nanoparticles hydroquinone catechol sensor

Robust secure transmission for multiuser MISO systems with probabilistic QoS constraints

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Science China(Information Sciences) 2016年第2期59卷 126-138页

作者： Lijian ZHANG Liang JIN Wenyu LUO chunming wang Yanqun TANG National Digital Switching System Engineering & Technological Research Center School of Information Systems Engineering Zhengzhou Information Science and Technology Institute

This paper considers a unicast multiuser multiple-input single-output(MISO) downlink system overheard by multiple single-antenna eavesdroppers. The objective is to jointly design the beamforming vectors and the artificial noise(AN) covariance matrix with imperfect channel state information(CSI) at the transmitter,such that the total transmit power is minimized while satisfying probabilistic quality of service(Qo S) constraints at legitimate users and the eavesdroppers. Using Bernstein-type inequalities and the S-procedure, we recast the non-convex power minimization problem as two different convex semidefinite programs(SDPs) which can be solved using interior-point methods. Simulation results show that the proposed methods outperform a nonrobust method and the ones using the isotropic AN.

关键词： physical layer security artificial noise imperfect CSI robust beamforming semidefinite program outage probability

Modulating,instead of suppressing,foreign body responses for biomaterials design

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Engineered Regeneration 2021年第1期2卷 91-95页

作者： Zhencheng Liao Lei Dong chunming wang Institute of Chinese Medical Sciences University of MacaoTaipaMacao SARChina School of Life Sciences Nanjing UniversityNanjing210093China

Foreign body responses(FBR)refer to the host tissue’s response to implanted biomaterials and medical devices,which are implanted in the body to repair tissue,deliver drugs or diagnose *** might link this term only to those installed with prothesis or undergoing cell-based therapies,but the fact is that FBR take place much more commonly than that and are not limited to any specific type of medical *** 2015,doctors found a surgical swab in the abdomen of an 85-year-old man admitted with an ischemic stroke.

关键词： admitted drugs biomaterials

RELATIONSHIP BETWEEN PLASMA OPTIC SIGNAL AND PENETRATION DEPTH FOR PARTIAL-PENETRATION LASER WELDING

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Chinese Journal of Mechanical Engineering 2006年第1期19卷 109-112页

作者： wang chunming HU Lunji HU Xiyuan LIU Jianhua School of Materials Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

Through sampling and analyzing of plasma optic signals of 400-600 nm emitted from partial-penetration laser welding processes, how the penetration depth is related to the welding parameter and the plasma optic signal is studied, Under the experimental conditions, the plasma optic signal has good response to variety of the weld penetration, and the signal＇s RMS value increases with the penetration in a quadratic curve mode. The inherent relation between the plasma optic signal and the penetration depth is also analyzed. It is also found that, between the two common parameters of laser power and welding speed, laser power has more influence on penetration while welding speed has more influence on weld width. The research results provide theoretic and practical bases for penetration real-time monitoring or predicting in partial-penetration laser welding,

关键词： Penetration Laser welding Plasma signal Penetration depth Monitoring

Modulating macrophage activities to promote endogenous bone regeneration: Biological mechanisms and engineering approaches

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Bioactive Materials 2021年第1期6卷 244-261页

作者： Yiming Niu Zhenzhen wang Yuchen Shi Lei Dong chunming wang State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoAvenida da UniversidadeMacao SARChina State Key Laboratory of Pharmaceutical Biotechnology Nanjing UniversityNanjing210093China

A coordinated interaction between osteogenesis and osteoimmune microenvironment is essential for successful bone *** particular,macrophages play a central regulatory role in all stages of bone *** on the signals they sense,these highly plastic cells can mediate the host immune response against the exterior signals of molecular stimuli and implanted scaffolds,to exert regenerative potency to a varying *** this article,we first encapsulate the immunomodulatory functions of macrophages during bone regeneration into three aspects,as sweeper,mediator and *** introduce the phagocytic role of macrophages in different bone healing periods(‘sweeper’)and overview a variety of paracrine cytokines released by macrophages either mediating cell mobilisation,vascularisation and matrix remodelling(‘mediator’),or directly driving the osteogenic differentiation of bone progenitors and bone repair(‘instructor’).Then,we systematically classify and discuss the emerging engineering strategies to recruit,activate and modulate the phenotype transition of macrophages,to exploit the power of endogenous macrophages to enhance the performance of engineered bone tissue.

关键词： Macrophages Bone regeneration Biomaterial-host interaction Inflammation Phenotype transition

Drag models for simulating gas–solid flow in the turbulent fluidization of FCC particles

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Particuology 2009年第4期7卷 269-277页

作者： Peng Li Xingying Lan chunming Xu Gang wang Chunxi Lu Jinsen Gao State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China

This paper examines the suitability of various drag models for predicting the hydrodynamics of the turbulent fluidization of FCC particles on the Fluent V6.2 platform. The drag models included those of Syamlal-O＇Brien, Gidaspow, modified Syamlal-O＇Brien, and McKeen. Comparison between experimental data and simulated results showed that the Syamlal-O＇Brien, Gidaspow, and modified Syamlal-O＇Brien drag models highly overestimated gas-solid momentum exchange and could not predict the formation of dense phase in the fiuidized bed, while the McKeen drag model could not capture the dilute charac- teristics due to underestimation of drag force. The standard Gidaspow drag model was then modified by adopting the effective particle cluster diameter to account for particle clusters, which was, however, proved inapplicable for FCC particle turbulent fluidization. A four-zone drag model （dense phase, sub- dense phase, sub-dilute phase and dilute phase） was finally proposed to calculate the gas-solid exchange coefficient in the turbulent fluidization of FCC particles, and was validated by satisfactory agreement between prediction and experiment.

关键词： Turbulent fluidized bed FCC particle Drag model CFD