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Acta Metallurgica Sinica(English Letters) 2011年第6期24卷 449-456页

作者： jun zhu jun LUO Qingmeng ZHANG jun DU Advanced Electronic Materials Institute General Research Institute for Nonferrous Metals Beijing 100088 China

To further study the effect of sputtered Au film as transition electrode layer on the electrical properties and interface microstructures of Na20-PbO-Nb2O5-SiO2 multilayer glass-ceramic capacitors, Au films pre-deposited at different time were prepared by DC magnetron sputtering. Compared with the single paste electrode structure, samples with Au films pre-deposited from 6 to 18 min have the consistent perfor- mance to effectively improve the electrical properties of the capacitors, resulting in the doubled breakdown strength, an increase of equivalent capacitance by 22% and a decrease of leakage current by an order of magnitude. SEM observations indicate that the Au films with deposition time from 6 to 18 min would all help the formation of a dense electrode/dielectric interface and inhibit the diffusion of Ag. The results reveal that Au film pre-deposited for 6 min as inner electrode was sufficient to improve the interface microstructure and therefore to inhibit the Ag diffusion and enhance the overall performance of the multi-layer glass-ceramic capacitors.

关键词： Inner electrode Deposition time Glass-ceramic Multi-layer capacitor

Endovascular treatment of delayed arterial hemorrhage after radical operation for hilar cholangiocarcinoma

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Hepatobiliary & Pancreatic Diseases International 2023年第4期22卷 403-405页

作者： Xiang-Dong Wang Nai-Jian Ge Cheng-Jian He jun-jun zhu Wei Xu Ye-Fa Yang Department of Interventional Radiology Shanghai Eastern Hepatobiliary Surgery HospitalShanghai 200438China

Radical operation for hilar cholangiocarcinoma(HCCA)is the most effective treatment,but high rates of severe postoperative complication and death remain concerns due to the complexity of biliary and vascular anatomy of the hepatobiliary ***-layed arterial hemorrhage(DAH)occurring>24 h postoperatively usually causes life-threatening bleeding,and relaparotomy for DAH would be difficult and hazardous because of postoperative adhe-sions and critical general *** endovascular technique is less invasive and has improved over the recent decades,clini-cians have begun to prefer endovascular treatment(EVT)to surgi-cal treatment of DAH after hepatobiliary pancreatic ***-ever,to our knowledge,a relatively large series of patients dealing with the outcomes of EVT of DAH after surgery for HCCA has not been ***,we analyzed the technical and clinical out-comes of EVT in 17 patients to evaluate the efficacy and safety of EVT.

关键词： operation arterial hemorrhage treatment after

Undifferentiated liver embryonal sarcoma in adults: A report of four cases and literature review

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World Journal of Gastroenterology 2010年第37期16卷 4725-4732页

作者： Xiao-Wei Li Shao-Juan Gong Wei-Hua Song jun-jun zhu Chun-Hua Pan Meng-Chao Wu Ai-Min Xu Department of Inte rvention Radiotherapy Eastern Hepatobiliary Surgery HospitalSecond Military Medical UniversityShanghai 200438China

AIM: To evaluate the undifferentiated embryonal sarcoma of liver (UESL) in adults in order to improve its diagnosis and treatment. METHODS: Four primary and one recurrent cases of UESL were clinicopathologically evaluated and immunohistochemically investigated with a panel of antibodies using the EnVision+ system. Relevant literature about UESL in adults was reviewed. RESULTS: Three males and one female were enrolled in this study. Their chief complaints were abdominal pain, weight loss, or fever. Laboratory tests, imaging and pathological features of UESL in adults were similar to those in children. Immunohistochemistry showed evidence of widely divergent differentiation into mesenchymal and epithelial phenotypes. The survival time of patients who underwent complete tumor resection followed by adjuvant transcatheter arterial chemoembolization (TACE) was significantly longer than that of those who underwent surgical treatment ***: UESL in adults may undergo pluripotential differentiation and its diagnosis should be made based on its morphological and immunohistochemical features. Complete tumor resection after adjuvant TACE may improve the survival time of such patients.

关键词： Undifferentiated embryonal sarcoma Liver Pluripotential differentiation Transcatheter arterial chemoembolization Adult

Structural and microwave absorption properties of CoFe_(2)O_(4)/residual carbon composites

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 221-232页

作者： Yuanchun Zhang Shengtao Gao Xingzhao Zhang Dacheng Ma Chuanlei zhu jun He Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining Anhui University of Science and TechnologyHuainan 232001China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

Electromagnetic interference,which necessitates the rapid advancement of substances with exceptional capabilities for bsorbing electromagnetic waves,is of urgent concern in contemporary *** this work,CoFe_(2)O_(4)/residual carbon from coal gasification fine slag(CFO/RC)composites were created using a novel hydrothermal *** mechanisms for microwave absorption,including conductive loss,natural resonance,interfacial dipole polarization,and magnetic flux loss,are involved in these ***,compared with pure residual carbon materials,this composite offers superior capabilities in microwave *** 7.76GHz,the CFO/RC-2 composite achieves an impressive minimum reflection loss(RL_(min))of-43.99 dB with a thickness of 2.44 ***,CFO/RC-3 demonstrates an effective absorption bandwidth(EAB)of up to 4.16 GHz,accompanied by a thickness of *** study revealed the remarkable capability of the composite to diminish electromagnetic waves,providing a new generation method for microwave absorbing materials of superior quality.

关键词： coal gasification slag residual carbon hydrothermal method microwave absorption CoFe_(2)O_(4)

Evaluation of long-term visual performance following AcrySof ReSTOR lens implantation

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Chinese Medical Journal 2009年第22期122卷 2705-2710页

作者： ZHAO Yun-e LI jun-hua zhu jun WANG Dan-dan WANG Qin-mei School of Optometry and Ophthalmology Eye Hospital Wenzhou Medical College Wenzhou Zhejiang 325003 China

Background Multifocal lens has become popular in cataract surgery. Short-term outcome after AcrySof ReSTOR Lens implantation had been reported by many studies, but long-term visual performance and the effect of posterior capsular opacification （PCO） on visual performance need further investigation. Methods This retrospective study involved 54 eyes from 41 cataract patients implanted with ReSTOR lens, with a follow-up period of 12 to 31 months. Manifest refraction spherical equivalence （MRSE）, monocular uncorrected and best-corrected distance visual acuity, uncorrected and distance-corrected near and intermediate visual acuity, contrast sensitivity were assessed. The effect of PCO on visual performance was evaluated by comparing visual parameters between pre and post-capsulotomy. Results Uncorrected distance visual acuity of eyes with MRSE within ±0.5 diopter （D） was better than those with MRSE greater than ±0.5 D （P 〈0.05）. Uncorrected distance and near visual acuity （LogMAR） was 0.10 and 0.17 respectively. Best corrected distance visual acuity and best distance-corrected near visual acuity （LogMAR） was 0.00 and 0.16, a significant improvement was noted after correction （P=0.000, P=-0.001, respectively）. Contrast sensitivity logarithm was comparable with the normal value at difference spatial frequencies except at 12 cpd. In 5 eyes with mild PCO, post-capsulotomy visual parameters were better than pre-capsulotomy （P 〈0.05）. Conclusion ReSTOR lens provides a good long-term distance and near vision, functional intermediate vision and contrast sensitivity. Mild PCO significantly affects visual performance and needs early intervention.

关键词： vision multifocal lens refraction posterior capsular opacification

Adaptation fermentation of Pichia stipitis and combination detoxification on steam exploded lignocellulosic prehydrolyzate

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Natural Science 2009年第1期1卷 47-54页

作者： jun-jun zhu Qiang Yong Yong Xu Shang-Xing Chen Shi-Yuan Yu College of Forestry Jiangxi Agricultural University Nanchang 330045 China. Ministry of Education Key Laboratory of Forest Genetics & Biotechnology Nanjing Forestry University Nanjing 210037 China Ministry of Education Key Laboratory of Forest Genetics & Biotechnology Nanjing Forestry University Nanjing 210037 China

Yeast Pichia stipitis CBS 5776 was developed through adaptation fermentation step by step in steam exploded corn stover prehydrolyzate because high concentration of weak acids and other inhibitors present in the prehydrolyzate could degrade the fermentability. However, the adaptability of Pichia stipitis CBS 5776 in the prehydrolyzate was so limited that steam strip-ping and overliming were applied to remove these inhibitors from it. Corn stover was steam exploded;the filtrate of steam exploded corn stover was hydrolyzed with dilute sulfuric acid, and then the acid hydrolyzate was detoxified and fermented by Pichia stipitis CBS 5776. Steam stripping could remove volatile com-pounds from the acid hydrolyzate and the fil-trate. At a steam stripping time of 120min, 81% acetic acid and 59% formic acid were removed from the acid hydrolyzate, 77% acetic acid and 45% formic acid were removed from the filtrate, while furfural was stripped off completely from the acid hydrolyzate and the filtrate. Overliming could reduce the contents of furfural and phe-nolics present in the acid hydrolyzate, however, sugars, especially pentoses, were also removed partially. It was necessary to detoxify the acid hydrolyzate in order to ferment the sugars to ethanol. Acid hydrolyzate detoxified with a combination of steam stripping for 120 min and overliming at pH11 and 60℃ for 90 min, its fer-mentability was significantly improved. Xylose was consumed nearly completely in 24h with an ethanol yield of 15.92g/l, 80.34% of theoretical.

关键词： Steam Explosion Steam Stripping Overliming Inhibitor Acid Hydrolyzate

Effect of order–disorder transition on thermodynamic and electronic properties of σ and χ phases in W–Re alloy: the first-principles calculation

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Tungsten 2025年第1期7卷 195-213页

作者： Zhi-Peng zhu Dian Jia William Yi Wang jun-Lei Yin Xing-Yu Gao Shu-Feng Yang Hai-Feng Song Jin-Shan Li State Key Laboratory of Solidification Processing Northwestern Polytechnical University Laboratory of Computational Physics Institute of Applied Physics and Computational Mathematics School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

The Tungsten-Rhenium(W-Re) alloys,celebrated for their high melting point,strength at elevated temperatures,electrical resistivity,and radiation resistance,have been widely utilized in high-temperature components,aerospace,electronics,and nuclear *** constituents of the topologically close-packed(TCP) phases,the sigma phase(σ) and chi phase(χ) formed within W-Re alloys wield considerable influence on the mechanical properties and the stability of the *** calculations were utilized in the present work to explore the structural,thermodynamic,and electronic properties of both ordered and disordered configurations within the σ and χ phases,culminating in a systematic elucidation of the higher phase stability exhibited by the ordered *** is found that the bulk modulus of these two phases is directly proportional to the concentration of Re in the alloy,while the equilibrium volume is inversely *** thermodynamic parameters of the σ and χ phases are calculated via the mean-field potential *** similar trends observed in the isobaric heat capacity,enthalpy increment,and entropy change curves for these two phases suggest they possess comparable thermodynamic *** is noteworthy that the contribution of ionic vibrations predominantly affects the isobaric heat capacity,while the contribution of thermal electronic excitations increases linearly with *** the structure and thermodynamic properties of TCP phases in W-Re alloys at low temperatures has profound significance for optimizing material performance,microstructures features,establishing theoretical foundations,and predicting material behavior.

关键词： First-principles calculations Phase stability TCP phases Thermodynamic properties W–Re alloy

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不同结构粒化器表面高炉渣液膜的流动特性

钢铁研究学报 2017年第1期29卷 19-25页

作者：吴君军王宏朱恂廖强丁玉栋重庆大学工程热物理研究所重庆400030 重庆大学低品位能源利用技术及系统教育部重点实验室重庆400030

在高炉渣离心粒化热回收工艺中,粒化得到的颗粒尺寸对余热回收效果至关重要,而颗粒尺寸又与粒化器表面液膜的流动特性息息相关,因此增进对粒化器表面液膜流动特性的认识可为离心粒化技术提供指导。采用数值模拟方法研究了离心粒化过程... 详细信息

在高炉渣离心粒化热回收工艺中,粒化得到的颗粒尺寸对余热回收效果至关重要,而颗粒尺寸又与粒化器表面液膜的流动特性息息相关,因此增进对粒化器表面液膜流动特性的认识可为离心粒化技术提供指导。采用数值模拟方法研究了离心粒化过程中粒化器结构对液膜流动的影响;讨论了半径、倾角、深度等参数对粒化器表面液膜厚度的影响及其作用机理,并获取了流体在粒化器表面运动轨迹与液膜厚度的关系。结果表明:转杯粒化器的内倾角介于40°~60°之间或深度介于10~12mm之间时粒化效果最佳,其相应液膜厚度约为0.300mm。与等径的转盘粒化器相比,其液膜厚度减小约32%。粒化器结构对液膜厚度的影响可归因于粒化器表面流体运动轨迹长度的变化,当流体运动轨迹长度增大时,其对应的液膜厚度就越小,二者呈非线性负相关关系。

关键词：高炉渣离心粒化粒化器液膜流动

Wetland and habitat dynamics in the evolving landscape of the Middle Yangtze River Basin

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Journal of Geographical Sciences 2025年第1期35卷 88-111页

作者： YANG Peng SUN Kaiya zhu Yanchao XIA jun HUANG Heqing SONG Jingxia SHI Xiaorui LU Xixi Hubei Key Laboratory of Regional Ecology and Environmental Change School of Geography and Information Engineering China University of Geosciences Department of Geography National University of Singapore State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University

Wetlands play a critical role in the global environment. The Middle Yangtze River Basin(MYRB), known for its abundant wetland resources, has experienced notable changes resulting from the complex interplay of environmental factors. Therefore, we investigated the spatiotemporal characteristics of wetland ecological quality in the MYRB from 2001 to *** the random forest(RF) regression algorithm and patch-generated land-use simulation(PLUS) model, we forecasted variations in wetland habitat quality and their determinants under the Shared Socioeconomic Pathway-Representative Concentration Pathway(SSPRCP) framework from 2035 to 2095. The main findings are as follows:(1) The RF algorithm was optimal for land-use and land-cover(LULC) classification in the MYRB from 2001 to 2020,when notable changes were observed in water bodies and buildings. However, the forested area exhibited an increase and decrease of 3.9% and 1.2% under the SSP1-2.6 and SSP5-8.5 scenarios, respectively, whereas farmland exhibited a diminishing trend.(2) Wetlands were primarily concentrated in the central and eastern MYRB, with counties in the southwest exhibiting superior ecological-environmental quality from 2001 to 2020. Notably,wetland coverage revealed significantly high level, significant changes, frequent but relatively minor changes under the SSP1-2.6, SSP2-4.5, and SSP 5-8.5 scenarios, respectively.(3)Regions with lower habitat quality were primarily concentrated in urbanized areas characterized by frequent human activities, indicating a clear degradation in habitat quality across different scenarios. In conclusion, we established a foundational framework for future investigations into the eco-hydrological processes and ecosystem quality of watersheds.

关键词：

Staged dendrite suppression for high safe and stable lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 674-683页

作者： jun Jiang Zhenjie Lu Yanwen Ding Shujun Liu Zhijie Qi Tian Tang Yunfan Zhang Zhiyuan Ma Jingwen Sun Liang Xue Wenyao Zhang Pan Xiong Xin Wang junwu zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and Technology Jiangsu Pylon Battery Co.Ltd

The unavoidable dendrite growth and shuttle effect have long been stranglehold challenges limiting the safety and practicality of lithium-sulfur ***,we propose a dual-action strategy to address the lithium dendrite issue in stages by constructing a multifunctional surface-negatively-charged nanodiamond layer with high ductility and robust puncture resistance on polypropylene （PP） *** uniformly loaded compact negative layer can not only significantly enhance electron transmission efficiency and promote uniform lithium deposition,but also reduce the formation of dendrite during early deposition *** importantly,under the strong puncture stress encountered during the deterioration of lithium dendrite growth under limiting current,the high ductility and robust puncture resistance（145.88 MPa） of as-obtained nanodiamond layer can effectively prevent short circuits caused by unavoidable lithium *** Li||Li symmetrical cells assembled with nanodiamond layer modified PP demonstrated a stable cycle of over 1000 h at 2 mA cm-2with a polarization voltage of only 29.3 ***,the negative charged layer serves as a physical barrier blocking lithium polysulfide ions,effectively mitigating capacity *** improved cells achieved a capacity decay of only 0.042%per cycle after 700 cycles at 3 C,demonstrating effective suppression of dendrite growth and capacity attenuation,showing promising prospect.

关键词： Ductility