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| 1 | Quality Control:Internal Defects Formation Mechanism of Selective Laser Melting Based on Laser-powder-melt Pool Interaction:A Review显示文摘Selective laser melting(SLM)is a 3D printing technology with a high near-net-shape ability and forming accuracy.However,the inevitable internal defects significantly hinder its development.Therefore,it is essential to fully understand the causes of internal defects in SLM processing and minimize the defects to achieve quality control accordingly.This work reviews the recent studies on internal defects in SLM,presenting the main internal defects of SLM as impurities,lack of fusion,gas pores,and micro-crack.These internal defects occur on the various phenomena in the laser-powder-melt pool(LPMP)stage.The formation of SLM internal defects is mainly affected by oxidation,denudation,balling,spatter,and keyholes;here,balling,spattering,and the keyhole phenomenon are the main factors causing internal defects in LPMP.Hence,this paper focuses on reviewing the balling effect,spatter behavior,and keyhole phenomenon,introducing the action mechanism of the above three phenomena under different process conditions.Additionally,the spatter behavior when forming internal defects is proposed.This review also considers the correlation between the spatter behavior and keyhole phenomenon and makes an important contribution to understanding and reducing SLM internal defects.It presents a reliable opinion on real-time monitoring and machine intelligent learning for SLM processing in the future,as well as supporting a systematic thinking for the suppression of defect formation in SLM. | Guang Yang Yilian Xie Shuo Zhao Lanyun Qin Xiangming Wang Bin Wu | 2022 | Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers)2022，1，3： | 2 |
| 2 | Epidemiology of severe sepsis in critically ill surgical patients in ten university hospitals in China显示文摘 | Baoli Cheng Guohao Xie ShangLong Yao Xinmin Wu Qulian Guo Miaoning Gu Qiang Fang Qiuping Xu Dongxin Wang Yuhong Jin ShiYing Yuan Junlu Wang Zhaohui Du Yunbo Sun XiangMing Fang | 2007 | Critical Care Medicine2007，，11： | 2 |
| 3 | Thermal and elemental analysis of the combustion chamber deposits in a large-scale two-stroke marine diesel engine显示文摘It is of significance to understand the chemical content of carbon deposits in the large-scale two-stroke(LSTS) marine diesel engine because of adverse effect on the engine performance, oil consumption and emissions. In this work, two different combustion chamber deposits in an LSTS marine diesel engine were studied using thermogravimetry analysis(TGA), elemental analysis(EA) and synchrotron X-ray fluorescence(SXRF). One was on the piston top and the other on the piston land, termed PTCD and PLCD, respectively. For the PTCD sample, the 97% residue in the TGA and 1.4% carbon content in the EA indicated the main compositions of PTCD were metal salts or oxides and ashes, significantly different from the previous findings of the highest carbon content in deposits from the small four stroke engines. The different chemical content between PTCD and PLCD implied higher thermal load in the LSTS marine diesel engine led to a nearly complete thermal decomposition of PTCD. The higher calcium content in PTCD and PLCD indicated the additives of cylinder oil should be the main source of metal content of PTCD and PLCD. Calcium distribution in the SXRF results was indicative of the potential layered structure in PTCD and PLCD. In addition, the appearance of iron on the surface against the piston in PTCD and PLCD indicated iron oxides formation between carbon deposit and piston materials. | ZHANG XuSheng ZENG XiangMing SUN XiuCheng DENG Biao PENG GuanYun XIE HongLan WU ZhiJun XIAO TiQiao | 2015 | Science China(Technological Sciences)2015，58，10： | 2 |
| 4 | Increased Genomic Copy Number of DEFA1/DEFA3 Is Associated with Susceptibility to Severe Sepsis in Chinese Han Population显示文摘 | QiXing Chen Matthew Hakimi ShuiJing Wu Yue Jin BaoLi Cheng HaiHong Wang GuoHao Xie Tomas Ganz Rose M. Linzmeier XiangMing Fang | 2010 | Anesthesiology2010，，6： | 1 |
| 5 | Epidemiology of severe sepsis in critically ill surgical patients in ten university hospitals in China显示文摘 | Baoli Cheng Guohao Xie ShangLong Yao Xinmin Wu Qulian Guo Miaoning Gu Qiang Fang Qiuping Xu Dongxin Wang Yuhong Jin ShiYing Yuan Junlu Wang Zhaohui Du Yunbo Sun XiangMing Fang | 2007 | Critical Care Medicine2007，，11： | 1 |
| 6 | Bandwidth-efficient cooperative diversity with rotated constellations and its performance analysis 显示文摘 | LEI Weijia XIE Xianzhong LI Xiangming | 2010 | KSII Transactions on Internet and Information Systems2010，5，6： | 1 |
| 7 | A novel,alkali-tolerant thermostable xylanase from Saccharomonospora viridis direct gene cloning expression and enzyme characterization显示文摘 | Wang Ziyuan Jin Yi Xie Xiangming | | 0，，08： | 1 |
| 8 | A Study of Clinical Characteristics and Treatment of Mooren's Ulcer显示文摘Objective: To investigate the clinical characteristics and to compare the effects of several therapies of Mooren's corneal ulcer.Methods: 550 consecutive cases of Mooren's corneal ulcer inpatients were analysed, including the age, sex, laterality of the eye, ulcer location , perforative rate, cure rate of surgeries, recurrent rate, and the effects of conjunctiva excision, lamellar keratoplasty (LKP), LKP and plus cyclosporin A eye drop.Results: The average age of onset of the cornea! ulcer was 48.4 years old, the ratio of the male to the female patients was 1:0.74, the bilateral disease was 30% of the total cases, 31.5% of the bilateral disease occurred in the younger group, and 68.5% of the bilateral ulcer occurred in the older group, ulcers located at the limbus of the palpebral fissure were 70% of the total cases, perforative rate was 13.3% , 43.2% of the perforation occurred in the younger group, and 56.8% of the perforation occurred in the older group, recurrent rate of the post-opertion was 25.6%, | Hanping Xie , Jiaqi Chen, Xiangming Gong, Chunmao Feng, Longshan ChenZhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou 510060, China | 1998 | 眼科学报1998，14，3： | 1 |
| 9 | Influence of salinity on the bacterial community composition in Lake Bosten, a large oligosaline lake in arid northwestern China显示文摘 | TANG Xiangming XIE Guijuan SHAO Keqiang | 2012 | Applied and Environmental Microbiology2012，78，13： | 1 |
| 10 | Effects of Qidi Tangshen granules and their separate prescriptions on podocytes in mice with diabetic nephropathy显示文摘Objective:Previous studies have found that Qidi Tangshen granules(QDTS),a combination therapy of supplementing essence(Tianjing,TJ)and unblocking the collaterals(Tongluo,TL),can reduce kidney damage in db/db mice.This study aimed to explore the effect of QDTS and their separate prescriptions on podocytes in mice with diabetic nephropathy.Methods:The db/db mice were used in this experiment as an animal model,while wild-type C57BL/6J mice were used as normal controls.At the age of 12 weeks,the db/db mice were randomly divided into 5 groups(db/db,db/dbþvalsartan,db/dbþQDTS,db/dbþTJ and db/dbþTL).The urine albumin excretion ratio(UAE)was measured by enzyme-linked immunosorbent assay before and after the intervention.The ultrastructure of the kidney podocytes was observed by transmission electron microscopy.The protein expression levels of nephrin and desmin were detected by immunohistochemistry.Results:QDTS and their separate prescriptions significantly decreased the UAE and attenuated the renal pathological injury.QDTS and their separate prescriptions also reduced the fusion rate of the foot processes and increased the expression of nephrin protein.In contrast,QDTS and their separate prescriptions(TJ and TL)reduced the expression level of desmin protein.Conclusion:QDTS and their separate prescriptions might reduce diabetes-induced renal injury by reducing podocyte damage.The therapeutic effect of QDTS was more pronounced than TJ and TL. | Borui Yu Hongfang Liu Xue Gao Qingqing Liu Qing Du Xiangming Wang Zhichao An Lin Wang Huidi Xie | 2022 | Journal of Traditional Chinese Medical Sciences2022，9，1： | 0 |
| 11 | Expression, Characterization and Antimicrobial Ability of a Variant T4 Lysozyme in Pichia pastoris显示文摘T4 lysozyme was engineered with disulfide bonds and expressed in Pichia pastoris. The secreted proteins were purified and made into powder by lyophilization. Recombinant protein purity was more than 70% measured by HPLC. The lytic activity of variant T4-lysozyme was measured by the lysis of the cell wall of Xanthomonas oryzae pv. oryzae, X. oryzae pv. oryzicola, Ralstonia solanacearum comb.nov, Clavibacter michiganensis subsp. michiganensis, X. campestris pv. malvacearum, Fusarium oxysporium sp. vasinfectum, Verticillium dahliae kleb. Inhibition zone assay showed that variant T4 lysozyme significantly inhibited X. o. oryzicola and X. c. malvacearum. The antifungal activities of this protein against F. o. vasinfectum and V. d. kleb were also analyzed. | Ning SUN Sanfeng CHEN Xiangming XIE Yueju WANG Gangqiang LI Nan WANG Dehu LIU | 2014 | Agricultural Science & Technology2014，15，3： | 0 |
| 12 | First experimental comparisons of laser-plasma interactions between spherical and cylindrical hohlraums at SGⅢ laser facility显示文摘We present our recent laser-plasmas instability(LPI)comparison experiment at the SGIII laser facility between the spherical and cylindrical hohlraums.Three kinds of filling are considered:vacuum,gas-filling with or without a capsule inside.A spherical hohlraum of 3.6 mm in diameter,and a cylindrical hohlraum of 2.4 mm?4.3 mm are used.The capsule diameter is 0.96 mm.A flat-top laser pulse with 3 ns duration and up to 92.73 kJ energy is used.The experiment has shown that the LPI level in the spherical hohlraum is close to that of the outer beam in the cylindrical hohlraum,while much lower than that of the inner beam.The experiment is further simulated by using our 2-dimensional radiation hydrodynamic code LARED-Integration,and the laser back-scattering fraction and the stimulated Raman scatter(SRS)spectrum are post-processed by the high efficiency code of laser interaction with plasmas HLIP.According to the simulation,the plasma waves are strongly damped and the SRS is mainly developed at the plasma conditions of electron density from 0.08 n_(c) to 0.1 n_(c) and electron temperature from 1.5 keV to 2.0 keV inside the hohlraums.However,obvious differences between the simulation and experiment are found,such as that the SRS back-scattering is underestimated,and the numerical SRS spectrum peaks at a larger wavelength and at a later time than the data.These dif-ferences indicate that the development of a 3D radiation hydrodynamic code,with more accurate physics models,is mandatory for spherical hohlraum study. | Yaohua Chen Zhichao Li Xufei Xie Chunyang Zheng Chuanlei Zhai Liang Hao Dong Yang Wenyi Huo Guoli Ren Jie Liu Xiaoshi Peng Tao Xu Yulong Li Sanwei Li Zhiwen Yang Liang Guo Lifei Hou Yonggang Liu Huiyue Wei Xiangming Liu Weiyi Cha Yukun Li Keli Deng Zheng Yuan Xiayu Zhan Haijun Zhang Baibin Jiang Wei Zhang Kai Du Xuewei Deng Yongkun Ding Xiaofeng Wei Wanguo Zheng Xiaodong Chen Xiantu He Ke Lan | 2017 | Matter and Radiation at Extremes2017，2，2： | 0 |
| 13 | Determination of laser entrance hole size for ignition-scale octahedral spherical hohlraums显示文摘A recently proposed octahedral spherical hohlraum with six laser entrance holes(LEHs)is an attractive concept for an upgraded laser facility aiming at a predictable and reproducible fusion gain with a simple target design.However,with the laser energies available at present,LEH size can be a critical issue.Owing to the uncertainties in simulation results,the LEH size should be determined on the basis of experimental evidence.However,determination of LEH size of an ignition target at a small-scale laser facility poses difficulties.In this paper,we propose to use the prepulse of an ignition pulse to determine the LEH size for ignition-scale hohlraums via LEH closure behavior,and we present convincing evidence from multiple diagnostics at the SGIII facility with ignition-scale hohlraum,laser prepulse,and laser beam size.The LEH closure observed in our experiment is in agreement with data from the National Ignition Facility.The total LEH area of the octahedral hohlraum is found to be very close to that of a cylindrical hohlraum,thus successfully demonstrating the feasibility of the octahedral hohlraum in terms of laser energy,which is crucially important for sizing an ignition-scale octahedrally configured laser system.This work provides a novel way to determine the LEH size of an ignition target at a small-scale laser facility,and it can be applied to other hohlraum configurations for the indirect drive approach. | Yao-Hua Chen Zhichao Li Hui Cao Kaiqiang Pan Sanwei Li Xufei Xie Bo Deng Qiangqiang Wang Zhurong Cao Lifei Hou Xingsen Che Pin Yang Yingjie Li Xiaoan He Tao Xu Yonggang Liu Yulong Li Xiangming Liu Haijun Zhang Wei Zhang Baibin Jiang Jun Xie Wei Zhou Xiaoxia Huang Wen Yi Huo Guoli Ren Kai Li Xudeng Hang Shu Li Chuanlei Zhai Jie Liu Shiyang Zou Yongkun Ding Ke Lan | 2022 | Matter and Radiation at Extremes2022，7，6： | 0 |
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