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Preparation of thermal barrier coatings by ultrasonic plasma spraying

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 92-94页

作者： WEN Xiong-wei LI lu-ming zhang Hua-tang HAO Hong-wei lu Zhi-qing Department of Mechanical Engineering Tsinghua University Beijing 100084 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China

Modulated plasma arc not only can heat the powder, but also can excite ultrasonic of different frequencies and different powers. The principles and characters of the plasma arc-excited ultrasonic were described, and the ultrasonic plasma spraying was compared with normal plasma spraying. Zirconia thermal barrier coatings (TBCs) were fabricated with two kinds of method. The TBCs were studied by the optical microscope observation, SEM observation and bonding strength experiment. The results show that suitable ultrasonic changes the performance and microstructure of TBCs in evidence. And the mechanism of ultrasonic influencing the TBCs was also discussed.

关键词： plasma spraying ultrasonic thermal barrier coatings

An objective-oriented approach to program comprehension using multiple information sources

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Science in China(Series F) 2008年第7期51卷 825-847页

作者： ZHAO wei zhang lu SUN JiaSu MEI Hong Key Laboratory of High Confidence Software Technologies Ministry of Education Institute of SoftwareSchool of Electronics Engineering and Computer Science Peking University Beijing 100871 China

Program comprehension is a key activity throughout software maintenance and reuse. The knowledge acquired through comprehending programs can guide engineers to perform various kinds of software maintenance and reuse tasks. The effective comprehension strategy and the associated efficient approach, as well as the sophisticated tool support, are the indispensable elements for an entire solution to program comprehension to reduce the high costs of this nontrivial activity. This paper presents an objective-oriented comprehension strategy, contrasting to the traditional comprehensive understanding strategy in the literature. It is a kind of on-demand understanding for specific tasks and more effective in practice. In addition, using multiple information sources to understand programs is proposed with the corresponding framework. From these two points of views, we propose a feature-oriented program comprehension approach using requirement documentation. This approach aims at a specific category of feature-related software maintenance and reuse tasks. Case studies are conducted to evaluate the proposed solution. Results from the studied cases show that the experimental prototype provides more explicit advices for software engineers when performing these tasks.

关键词： program comprehension feature-oriented program comprehension feature location information retrieval

Pseudohyperkalemia with Myelofibrosis after Splenectomy

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Chinese Medical Sciences Journal 2016年第4期31卷 258-260页

作者： Sheng-li Liu lu-wei zhang Jun Tian Center of Kidney Transplantation and Hemodialysis Qilu Hospital of Shandong University

SEUDOHYPERKALEMIA refers the serum potassiumlevel is higher than plasma potassium due tovarious reasons in vitro monitoring, but actualpotassium level in vivo is at the normal range. Aseries of inappropriate clinical interventions due to initialfailure to recognize it may actually decrease potassiumlevel，which could cause life-threatening condition. Here wereport a patient with myelofibrosis who occurred spurioushyperkalemia after splenectomy, aiming at emphasizingthe importance of recognizing pseudodyperkalemia.

关键词： pseudohyperkalemia serum potassium plasma potassium myelofibrosis splenectomy

Efficacy and safety of carrimycin in ten patients with severe pneumonia following solid organ transplantation

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World Journal of Clinical Cases 2024年第15期12卷 2542-2550页

作者： Xian-Quan Cui lu-wei zhang Peng Zhao Jing-Jing Feng Department of Organ Transplantation Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Department of Blood Purification Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina

BACKGROUND The number of patients undergoing solid organ transplantation has increased ***,infections in solid organ transplant recipients can have a severe effect on patient survival owing to the continued use of *** is a novel macrolide antibiotic produced by genetically engineered streptomyces spiramyceticus harboring a 4’’-O-isovaleryltransferase gene(ist)from streptomyces *** has good antibacterial and antiviral ***,no relevant studies have been conducted on the efficacy and safety of carrimycin in patients with severe pneumonia(SP)after solid organ *** To explore the efficacy and safety of carrimycin in patients with SP after solid organ transplantation to provide a medication reference for clinical *** In March 2022,ten patients with SP following solid-organ transplantation were treated at our hospital between January 2021 and March *** the condition was critical and difficult to control with other drugs,carrimycin was *** ten patients'clinical features and treatment protocols were retrospectively analyzed,and the efficacy and safety of carrimycin for treating SP following solid organ transplantation were *** All ten patients were included in the *** etiological agent detection,there were three cases of fungal pneumonia,two cases of bacterial pneumonia,two cases of Pneumocystis pneumonia,and three cases of mixed *** treatment with carrimycin,the disease in seven patients significantly improved,the course of the disease was significantly shortened,fever was quickly controlled,chest computed tomography was significantly improved,and oxygenation was significantly ***,the patients were discharged after *** patient died of acute respiratory distress syndrome,and two patients discontinued *** Carrimycin is a safe and effective treatment modality for SP following soli

关键词： Carrimycin Organ transplantation Severe pneumonia Immunosuppressant Infection Antiviral drugs

Transarterial chemoembolization combined with radiofrequency ablation in the treatment of hepatocellular carcinomas larger than 5 cm

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Hepatoma Research 2019年第4期5卷 33-41页

作者： Yi Yang Zhuo-Min Lv Min Yan Hong-Xin zhang Yong Long wei-lu zhang Department of Pain Treatment Tangdu Hospital of the Fourth Military Medical UniversityXi’an 710038China Department of Epidemiology Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environmentthe Fourth Military Medical UniversityXi’an 710032China

Aim:This meta-analysis was designed to compare the effectiveness of the combination of transarterial chemoembolization(TACE)and radiofrequency ablation(RFA)*** of TACE alone in hepatocellular carcinoma(HCC)tumors larger than 5 ***:PUBMED,CNKI,and CBM were searched for all related randomized controlled trials(RCTs)up until October 22,*** studies were identified that compared TACE with *** alone for HCC *** response rate,the proportion of patients with either complete or partial shrinkage of tumors,and survival rate were the major evaluation ***:Meta-analysis data revealed that TACE with RFA showed significantly better tumor response rate(risk ratio(RR)=1.452,95%confidence interval(CI):1.308-1.610,P<0.001)and 1-year overall survival rate(RR=1.412,95%CI:1.249-1.596,P<0.001)than that of TACE alone ***:The data of our study indicates that TACE combined with RFA in the treatment of HCC larger than 5 cm is an effective comprehensive interventional therapy.

关键词： Transarterial chemoembolization radiofrequency ablation hepatocellular carcinoma meta-analysis

Aquaporin-4 deficiency attenuates acute lesions but aggravates delayed lesions and microgliosis after cryoinjury to mouse brain

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Neuroscience Bulletin 2012年第1期28卷 61-68页

作者： Wen-Zhen Shi Chun-Zhen Zhao Bing Zhao Xiao-Liang Zheng San-Hua Fang Yun-Bi lu wei-Ping zhang Zhong Chen Er-Qing wei Department of Pharmacology and Institute of Neurobiology School of Medicine Zhejiang University Hangzhou 310058China

Objective To determine whether aquaporin-4 （AQP4） regulates acute lesions, delayed lesions, and the associated microglial activation after cryoinjury to the brain. Methods Brain cryoinjury was applied to AQP4 knockout （KO） and wild-type mice. At 24 h and on days 7 and 14 after cryoinjury, lesion volume, neuronal loss, and densities of microglia and astrocytes were determined, and their changes were compared between AQP4 KO and wild-type mice. Results Lesion volume and neuronal loss in AQP4 KO mice were milder at 24 h following cryoinjury, but worsened on days 7 and 14, compared to those in wild-type mice. Besides, microglial density increased more, and astrocyte proliferation and glial scar formation were attenuated on days 7 and 14 in AQP4 KO mice. Conclusion AQP4 deficiency ameliorates acute lesions, but worsens delayed lesions, perhaps due to the microgliosis in the late phase.

关键词： aquaporin-4 gene deficiency cryoinjury microglia astrocyte

Raman scattering study of magnetic layered MPS_3 crystals(M = Mn, Fe, Ni)

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Chinese Physics B 2019年第5期28卷 226-231页

作者： Yi-Meng Wang Jian-Feng zhang Cheng-He Li Xiao-Li Ma Jian-Ting Ji Feng Jin He-Chang Lei Kai Liu wei-lu zhang Qing-Ming zhang Department of Physics Renmin University of China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Department of Engineering and Applied Sciences Sophia University School of Physical Science and Technology Lanzhou University

We report a comprehensive Raman scattering study on layered MPS_3(M = Mn, Fe, Ni), a two-dimensional magnetic compound with weak van der Waals interlayer coupling. The observed Raman phonon modes have been well assigned by the combination of first-principles calculations and the polarization-resolved spectra. Careful symmetry analysis on the angle-dependent spectra demonstrates that the crystal symmetry is strictly described by C_(2h)but can be simplified to D_(3d) with good accuracy. Interestingly, the three compounds share exactly the same lattice structure but show distinct magnetic structures. This provides us with a unique opportunity to study the effect of different magnetic orders on lattice dynamics in MPS_3. Our results reveal that the in-plane Nel antiferromagnetic(AF) order in MnPS_3 favors a spin–phonon coupling compared to the in-plane zig-zag AF in NiPS_3 and FePS_3. We have discussed the mechanism in terms of the folding of magnetic Brillouin zones. Our results provide insights into the relation between lattice dynamics and magnetism in the layered MPX_3(M = transition metal, X = S, Se) family and shed light on the magnetism of monolayer MPX_3 materials.

关键词： Raman scattering two-dimensional magnetic van der Waals materials lattice dynamics magnetism

From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua lu Jun Shen Xin zhang Lingcong Chao Liang Chen Ding zhang Tao wei Shoudong Xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added

Efficacy and safety of stereotactic body radiation therapy combined with transarterial chemoembolization for Chinese intermediate-to advanced-stage hepatocellular carcinoma patients: a systematic review and meta-analysis

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Hepatoma Research 2019年第5期5卷 37-46页

作者： Shou-Jie Zhao Bai-Shu Dai Zhong-Jun Shao Xi-Lin Du wei-lu zhang Yong Long Department of General Surgery Tangdu Hospital of the Fourth Military Medical UniversityXi’an 710038China Department of Epidemiology the Fourth Military Medical UniversityXi’an 710032China

Aim:According to the current guidelines,transarterial chemoembolization(TACE)remains the first-line therapies for hepatocellular carcinoma(HCC)patients at Barcelona Clinic Liver Cancer(BCLC)B-stage and sorafenib is a small molecule target drug for BCLC *** clinical practice,clinicians have attempted to use stereotactic body radiation therapy(SBRT)plus TACE for treating intermediate-to advanced-stage ***,the therapeutic effects are still *** meta-analysis was conducted to elucidate the validity and safety of the combination therapy of SBRT plus TACE in the patients with intermediate-to advanced-stage ***:PubMed,MEDLINE,Web of Science,China Biology Medicine,Chinese Knowledge resources integrated and Chinese Scientific Journal Full-Text Database was searched from their inception date to November *** survival rates(half-year,one-year and two-year)were analyzed and compared between the observation groups and the control *** negative conversion rate of AFP and the total effective rate were also *** ratios(RR)and 95%CI were calculated to express therapeutic effects. ;Results:A total of 1,210 patients from 13 eligible studies were *** cooperation of TACE and SBRT notably ameliorated the whole survival rates of half-year,one-year,two-year,the negative conversion rate of AFP,and the total effective rate,compared with TACE or SBRT monotherapy[RR(the total effective rate),1.412,95%CI:1.309-1.523,P<0.001],[RR(half-year survival rate),1.196,95%CI:1.121-1.276,P<0.001],[RR(one-year survival rate),1.327,95%CI:1.236-1.424,P<0.001],[RR(two-year survival rate),1.479,95%CI:1.284-1.703,P<0.001]and[RR(negative conversion rate of AFP),1.756,95%CI:1.502-2.059,P<0.001].Sensitivity analysis supported the above ***:Combination therapy of SBRT and TACE provides survival benefits in intermediate-to advanced-stage HCC patients compared to monotherapy of SBRT or TACE.

关键词： Transcatheter arterial chemoembolization hepatocellular carcinoma stereotactic body radiation therapy meta-analysis