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World Journal of Clinical Cases 2025年第6期13卷 24-29页

作者： wen-Jin Yuan Yi-Juan Zheng Bing-Rong zhang Yi-Jie Lin You Li Yan-Yan Qiu Xue-Ping Yu Department of Infection Disease Clinical Medical Research Center for Bacterial and Fungal Infectious Diseases of Fujian provinceFujian Medical University Affiliated First Quanzhou HospitalQuanzhou 362000Fujian ProvinceChina

BACKGROUND Hydroxyurea,an antimetabolite,is frequently prescribed for various hemato-logical disorders,and its common side effects include gastrointestinal problems,cutaneous or mucosal lesions and pyrexia/*** SUMMARY This study reports the case of a 67-year-old woman who developed recurrent abdominal pain after 10 years of continuous hydroxyurea therapy for primary *** revealed an ileocecal *** discontinuing hydroxyurea therapy for 6 months,follow-up colonoscopy showed a significant reduction in the *** We consider cecal ulcers as a rare complication of hydroxyurea therapy which typically resolves upon stopping the drug.

关键词： Hydroxyurea Ulcer Abdominal pain Thrombocythemia Colonoscopy Case report

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锻件内部孔洞闭合的研究

沈阳理工大学学报 2008年第6期27卷 64-67页

作者：李永华檀雯张宁王勇邓子玉沈阳理工大学材料科学与工程学院辽宁沈阳110168

采用***软件对镦粗变形过程中圆柱形锻件内部孔洞的闭合规律进行数值模拟,得出孔洞闭合的临界压下率.采用聚碳酸酯制备内部有孔洞的柱形试样并进行镦粗变形的物理模拟,研究孔洞闭合规律.实验结果与数值模拟结果吻合得较好.

关键词：锻件孔洞闭合数值模拟物理模拟

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某铅锌矿选矿工艺试验研究

湿法冶金 2004年第2期23卷 98-100页

作者：秦永启张文华内蒙古地质矿产实验研究所内蒙古呼和浩特010031

在高碱性条件下,对内蒙古某铅锌矿进行了分选试验。用乙黄药为捕收剂,ZnSO4和Na2S为抑制剂优先选铅,然后用CuSO4为活化剂,用乙黄药选锌。闭路试验结果表明,铅精矿中,铅质量分数为72.23%,铅回收率为87.21%;锌精矿中,锌质量分数为51.50%,... 详细信息

在高碱性条件下,对内蒙古某铅锌矿进行了分选试验。用乙黄药为捕收剂,ZnSO4和Na2S为抑制剂优先选铅,然后用CuSO4为活化剂,用乙黄药选锌。闭路试验结果表明,铅精矿中,铅质量分数为72.23%,铅回收率为87.21%;锌精矿中,锌质量分数为51.50%,锌回收率为85.22%。该工艺已投入生产。

关键词：铅锌矿选矿乙黄药抑制剂活化剂试验研究

Simulation of Gas Flow Field in Laval Nozzle and Straight Nozzle for Powder Metallurgy and Spray Forming

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Journal of Iron and Steel Research International 2008年第6期15卷 44-47页

作者： LI Zheng-dong zhang Guo-qing LI Zhou zhang yong XU wen-yong National Key Laboratory of High Temperature Structural Materials Beijing Institute of Aeronautical Materials Beijing 100095 China

Gas flow field in nozzles and out of nozzles was calculated for Laval orifice and straight orifice nozzles. The results showed that the flow generated by the Laval nozzle had a higher exit velocity in the vicinity of the nozzle, in comparison with that of the straight nozzle, that is to say, a Laval nozzle was more efficient than a straight one in disintegrating the melt stream and was apt to produce finer powders. The flow generated by the Laval nozzle was less convergent and the velocity gradient along the radial direction was more moderate than that of a straight nozzle, which could contribute to a broad distribution of melt particles. According to their flow characteristics, the Laval nozzle was reckoned as a better choice of producing larger spray-formed billets.

关键词： numerical simulation computational fluid dynamics gas flow field atomization nozzle

Revolutionizing photothermal CO_(2)hydrogenation with ceria-based catalysts

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Nano Research 2025年第1期18卷 30-49页

作者： Zhaorui zhang Xiao Han Junhong zhang Yunyun Dong Jinsheng Zhao Qian Xu ingqiang zhang School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252059China Institute for Catalysis Hokkaido UniversityN-21W-10Sapporo 001-0021Japan National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China

In the context of achieving carbon neutrality,CO_(2)catalytic conversion technologies are effective in reducing atmospheric CO_(2)concentrations while simultaneously producing renewable *** approach is seen as a viable method for constructing a new carbon cycle,thereby effectively addressing the issue of global *** CO_(2)conversion has recently emerged as a promising research focus due to its high energy utilization efficiency,superior CO_(2)conversion,excellent product selectivity,mild operating conditions,low energy consumption and minimal operating *** oxide(CeO_(2))has been widely used in photothermal catalysis due to its unique chemical properties,particularly when used as a support material with supported metals,creating distinctive interfacial sites for catalytic *** an emerging star support in photothermal CO_(2)conversion,its contributions are equally significant and should not be ***,to our knowledge,there has been no comprehensive review of CeO_(2)applications in catalytic hydrogenation of CO_(2).In this paper,we summarize and discuss CeO_(2)-based materials for photothermal CO_(2)conversion to value-added *** research particularly focuses on the synthesis methods of CeO_(2)-supported catalysts,the history of CeO_(2)in photothermal catalysis,types of photothermal catalytic reactors,unique characterization methods for the photothermal catalysts and the photothermal CO_(2)hydrogenation reactions by CeO_(2)-based *** related to further challenges and future directions for photothermal CO_(2)hydrogenation are also provided.

关键词： CO_(2)neutrality hydrogenation photothermal catalysis ceria C1 chemistry

Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-Jun zhang wen-Wei Wang Jing-Shui Zhen Bo-Cheng Li De-Cheng Cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

Photoinitiating Characteristics of Benzophenone Derivatives as Type II Macromolecular Photoinitiators Used for UV Curable Resins

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Chemical Research in Chinese Universities 2011年第1期27卷 145-149页

作者： CHENG Liang-liang zhang yong SHI wen-fang CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P.. R. China

Dodecyl-benzophenone（DBP） and hexadecoxyl-benzophenone（HDBP） as type 11 photoinitiators used for radical photopolymerization systems were synthesized by Friedel-Crafts reaction, and characterized by 1H NMR and FTIR spectroscopy. The UV-Vis absorption spectra of DBP and HDBP, propitious to photopolymerization under a commercial mercury UV bulb are centered at 345 and 335 nm, respectively. HDBP has higher extinction coefficient than DBP, but lower photoinitiating efficiency. Their photoinitiating performances for EB605, a bisphenol A epoxy acrylate with 40%（mass fraction） tripropyleneglycol diacrylate （TPGDA）, resin consisting of bisphenol A epoxy acrylate and tripropyleneglycol diacrylate in the presence of triethanolamine as a coinitiator were investigated by photo-differential scanning calorimetry（photo-DSC）. DBP initiates the curing of acrylate more efficiently than HDBP, showing higher photopolymerization rate and unsaturation conversion, resulted from the poor compatibility of HDBP with the resin. The photoinitiating activity of DBP to epoxy acrylate resin is even higher than that of BP at lower loadings.

关键词： Macromolecular photoinitiator Benzophenone derivative Photopolymerization

Microstructure and tensile properties of Ti-62421S alloy plate with different annealing treatments

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Rare Metals 2018年第7期37卷 568-573页

作者： yong-Ling Wang Xiao-Yun Song wen Ma wen-Jing zhang wen-Jun Ye Song-Xiao Hui State Key Laboratory of Nonferrous Metals and Processes General Research Institute for Nonferrous Metals Division of Science and Technology Information General Research Institute for Nonferrous Metals

Ti-62421S （Ti-6A1-2Sn-4Zr-2Nb-lMo-0.2Si） is a novel short-time using high-temperature titanium alloy. The effects of annealing on microstructure and tensile properties of Ti-62421S alloy plate were studied through optical microscopy （OM）, electron probe microanalysis （EPMA）, transmission electron microscopy （TEM）, and tensile tests. The results show that, with annealing tem- perature increasing, the volume fraction of primary α（αp）- phase decreases while that of transformed β（βt）-structure and secondary α （αs）-phase increases. The room-temperature strength and plasticity are insensitive to annealing temperature. However, with annealing temperature increasing, the tensile strength decreases at 550℃, while increases at 600 and 650℃ instead. It is suggested that, at 550℃, the strengthening mechanism is mainly boundary strengthening and the biggest contributor is ap-phase by providing αp/β-boundary area. Above 600 ℃, the strengthening mechanism is grain strengthening, where αs-phase strengthens the β-phase.

关键词： High temperature titanium alloy Ti-62421S Heat treatment Microstructure Tensile properties

Unthermal Hawking Radiation from a General Stationary Black Hole

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Communications in Theoretical Physics 2008年第2期49卷 379-381页

作者： zhang yong-Ping DAI Qian LIU wen-Biao Department of Physics Institute of Theoretical Physics Beijing Normal University Beijing 100875 China

Using Damour-Ruflini＇s method, Hawking radiation from a general stationary black hole is investigated again deeply. Considering the back reaction of the particle to the space-time and energy conservation, we find that the radiation is not exactly thermal and can take out information from the black hole. This can be used to explain the information loss paradox, and the result is consistent with the works finished before.

关键词： Hawking radiation stationary black hole back-reaction information loss paradox unitary theory