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Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo Yu Zhenyu Sun Weichen Zheng Liangwei Zhang Yanling xue Wenning Liu Shoumei xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment

Mimicking aneurysm in a patient with chronic occlusion of the left middle cerebral artery

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World Journal of Clinical Cases 2025年第3期13卷 20-23页

作者： xue-jian Wang Department of Neurosurgery Affiliated Hospital 2 of Nantong UniversityNantong 226000Jiangsu ProvinceChina

The chronic occlusion of intracranial arteries generally has no or mild clinical symptoms,and the clinical symptoms of acute cerebral artery occlusion are mostly manifested as severe cerebral infarction symptoms,which often make early diagnosis difficult,thus losing the best treatment *** cerebral infarction occurs,the consequences are difficult to *** is also an important reason for the high misdiagnosis rate and mortality of this *** this paper,the characteristics of the disease were analyzed to provide clinical reference.

关键词： Chronic occlusion Misdiagnose Arterial occlusion Middle cerebral artery occlusion Aneurysm

以“甘润濡养”立法的启膈方抑制裸鼠食管癌肺转移的研究

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中国全科医学 2018年第27期21卷 3373-3377页

作者：史会娟薛健雄石冬璇孔令玉李晶河北医科大学第四医院中医科河北省石家庄市050011 河北医科大学中西医结合学院河北省石家庄市050011 河北医科大学研究生学院河北省石家庄市050011

目的建立裸鼠食管癌肺转移模型,探讨启膈方对尾静脉注射食管癌细胞裸鼠肺转移的影响。方法 2017年2—10月,选取BABL/c裸鼠21只,将低分化食管癌细胞株KYSE-150-Luc用1 ml注射器接种于BABL/c裸鼠尾静脉,每只100μl,建立裸鼠肺转移模型,随... 详细信息

目的建立裸鼠食管癌肺转移模型,探讨启膈方对尾静脉注射食管癌细胞裸鼠肺转移的影响。方法 2017年2—10月,选取BABL/c裸鼠21只,将低分化食管癌细胞株KYSE-150-Luc用1 ml注射器接种于BABL/c裸鼠尾静脉,每只100μl,建立裸鼠肺转移模型,随机分为对照组(7只)、卡培他滨组(7只)和启膈方组(7只)。接种后第3天,对照组给予0.9%氯化钠溶液灌胃0.2 ml/d,卡培他滨组给予卡培他滨溶液(浓度400 mg/kg)灌胃0.2ml/d,启膈方组给予启膈方提取物(QGF)溶液(浓度3 913 mg/kg)灌胃0.2 ml/d。其中卡培他滨组每灌胃2周停药1周。3组均灌胃给药12周。应用动物活体成像系统观察各组裸鼠肺转移情况;记录裸鼠体质量;处死裸鼠后记录裸鼠肺转移结节个数;Western blotting法检测裸鼠肺转移结节组织中E钙黏蛋白(E-cad)、角蛋白(KRT)8、snail、间隙连接蛋白(Connexin)43、WNT2表达水平;HE染色法检测各组裸鼠肺转移结节组织镜下表现。结果接种后第12周在肺部区域检测到肿瘤细胞的生物发光信号,提示出现肺转移,其中启膈方组和卡培他滨组光子强度均低于对照组;裸鼠肺呈灰白色肺转移结节。对照组、启膈方组第4、8、12、16周体质量与初始体质量百分比大于卡培他滨组(P<0.05);对照组第4、8、12、16周体质量与初始体质量百分比小于启膈方组(P<0.05)。对照组肺转移结节数多于启膈方组、卡培他滨组(P<0.05)。启膈方组及卡培他滨组E-cad、KRT8、Connexin43表达水平高于对照组,snail、WNT2表达水平低于对照组(P<0.05);卡培他滨组E-cad、KRT8、Connexin43表达水平低于启膈方组,snail、WNT2表达水平高于启膈方组(P<0.05)。观察肺转移组织结节HE染色切片,3组裸鼠肿瘤组织均呈巢状生长,肿瘤细胞排列密集,异质性明显;3组均未见明显肿瘤细胞坏死征象。结论启膈方能够抑制食管癌肺转移发生,可能与其增强裸鼠间隙连接、抑制上皮细胞间质化有关,且启膈方在控制裸鼠体质量减轻上效果明显优于卡培他滨。

关键词：食管肿瘤肿瘤转移启膈方

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

Mesospheric tide comparisons at low latitudes observed by two collocated meteor radars

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Earth and Planetary Physics 2025年第1期9卷 54-68页

作者： jian Li Wen Yi XiangHui xue Jie Zeng HaiLun Ye jianYuan Wang JinSong Chen Na Li TingDi Chen Chinese Academy of Sciences(CAS)Key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology Anhui Mengcheng Geophysics National Observation and Research StationUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China National Key Laboratory of Electromagnetic Environment China Research Institute of Radiowave PropagationQingdao 266107China Yunnan Kunming Electromagnetic Environment National Observation and Research Station Qujing Kunming 655000China

Accurate knowledge of mesospheric winds and waves is essential for studying the dynamics and climate in the mesosphere and lower thermosphere(MLT)*** this study,we conduct a comparative analysis of the mesosphere tidal results obtained from two adjacent meteor radars at low latitudes in Kunming,China,from November 2013 to December *** two radars operate at different frequencies of 37.5 MHz and 53.1 MHz,***,overall good agreement is observed between the two radars in terms of horizontal winds and tide *** results show that the dominant tidal waves of the zonal and meridional winds are diurnal and semidiurnal ***,we conduct an exhaustive statistical analysis to compare the tidal amplitudes and vertical wavelengths recorded by the dual radar systems,which reveals a high degree of alignment in tidal *** investigation includes variances and covariances of tidal amplitudes,which demonstrate remarkable consistency across measurements from both *** finding highlights clear uniformity in the mesospheric tidal patterns observed at low latitudes by the two neighboring meteor *** of the comparative analysis specifically underscore the significant correlation in vertical wavelength measurements,validating the robustness of radar observations for tidal research.

关键词： mesosphere and lower thermosphere region meteor radar mesospheric winds tides

Coupling Effect of Water and Phosphate on Economic Traits of Sugarcane

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Agricultural Science & Technology 2010年第5期11卷 62-65,120页

作者：陆国盈蒋明明韩世健裴铁雄汤雪莲秦洪波 Guo-ying Ming-ming Shi-jian Tie-xiong xue-lian Hong-bo 广西大学农学院广西南宁530005 广西大学甘蔗研究所广西南宁530005

[Objective] The aim was to study the coupling effect of water and phosphate on economic traits of sugarcane. [Method] Taking sugarcane variety ROC22 as tested material,coupling effects of different levels of water supply quantity and different levels of phosphorus fertilizer on the yield and quality of sugarcane were studied. Among them,water supply quantity had 3 levels,that was,the water supply quantity per 10 days from the early tillering stage of sugarcane to the end of elongation was 199.5 m3/hm2 (A1),400.5 m3/hm2 (A2) and 600.0 m3/hm2 (A3),respectively; Phosphorus fertilizer as basic fertilizer had 4 levels:P2O5 0 kg/hm2 (B1),120 kg/hm2 (B2),240 kg/hm2 (B3) and 360 kg/hm2 (B4). [Result] Treatment A3B2 in water-fertilizer coupling was more suitable to improve economic traits of sugarcane. [Conclusion] The research results provide theoretical basis for the efficient utilization of water and phosphorus fertilizer in production of Guangxi sugarcane and the cultivation of high-yield and high-glucose sugarcane.

关键词： Sugarcane Water Phosphorus fertilizer Water-phosphate coupling Economic traits

转子-轴承-干气密封系统振动响应及结构优化

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装备环境工程 2018年第7期15卷 33-39页

作者：张伟政薛建雄李金晓兰州理工大学石油化工学院甘肃兰州730050

目的为了提高干气密封系统在运行工况下的稳定性,对密封螺旋槽槽型参数进行优化。方法根据转子-轴承-干气密封系统轴向振动动力学模型,建立双自由度振动方程。在特定的工况下,通过Maple软件多次拟合求解气膜非线性方程,得到气膜轴向刚... 详细信息

目的为了提高干气密封系统在运行工况下的稳定性,对密封螺旋槽槽型参数进行优化。方法根据转子-轴承-干气密封系统轴向振动动力学模型,建立双自由度振动方程。在特定的工况下,通过Maple软件多次拟合求解气膜非线性方程,得到气膜轴向刚度和阻尼。运用MATLAB软件中的龙格-库塔法对三阶的非线性振动方程数值求解,绘制不同螺旋角度下的时间历程图和相图,分析对比不同螺旋角度下静环的振动位移。结果从螺旋角度与静环振动位移的关系得出,当α=74.53°时,静环振动位移最小,其最大振幅为7μm,最大振速为7μm/s;当α=73.78°时,静环振动位移最大,其最大振幅为16.5μm,最大振速为17μm/s。改变螺旋角度可以调节和减小静环的振幅。结论在考虑叶轮转子的气动力和轴承油膜力的干气密封系统下,螺旋角度的增加能够提高系统运行的稳定性,增加螺旋角度(0.5°~0.6°)使得动静环的追随性最佳,对干气密封结构的设计提出了指导。

关键词：非线性干气密封刚度振动响应结构优化

Effects of body-resistance strengthening and tumor-suppressing granules on immune adhesion function of red blood cells and expression of metastasis protein CD44 in tumor cells of patients with esophageal carcinoma

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World Journal of Gastroenterology 2007年第32期13卷 4360-4364页

作者： jian-xiong Zhao xue-Feng Li xue-Xi Wang Institute of Combined Western and Chinese Traditional Medicine Lanzhou University Medical School Lanzhou 730000 Gansu Province China

AIM： To investigate the effects of Fuzheng Yiliu granules （body-resistance strengthening and tumor-suppressing granules） in patients with esophageal carcinoma. METHODS： We compared the immune adherent properties of red blood cells （RBCs）, the expression of metastasis protein CD44, and the metastasis inhibition factor nm23, in esophageal carcinoma tumor cells of patients before and after radiotherapy in the presence and absence of orally administered Fuzheng Yiliu granules. Sixty-three hospitalized patients with esophageal carcinoma were treated with standard radiotherapy and randomly divided into treatment group （n = 30） treated with both radiotherapy and Fuzheng Yiliu granules and control group （n = 33） given radiotherapy only. Blood samples and tumor tissue were obtained before and after 21 d of treatment. The rosette rates for complement receptor type 3b （C3bRR） and immune complex receptor （ICRR） on RBCs were measured by erythrocyte immunological methods. Expression of CD44 and rim23 in tumor tissue sections was determined by immunohistochemical staining with monoclonal antibodies CD44v6 ad nm23H-1, respectively. RESULTS： The positivity of RBC-C3bRR before and after 21 d of treatment increased from 7.78% ± 1.59% to 10.03% ± 2.01% in the double treatment group, while it changed only slightly from 7.18% ± 1.29% to 7.46% ± 1.12% in the radiotherapy group. The positive rate for RBC-ICRR decreased from 37.68% ± 2.51% to 22.55% ± 1.65% after the double treatment, and from 37.28% ± 2.41% to 24.69% ± 1.91% in radiotherapy group at the same time points. The difference in erythrocyte immune adherent function between the two groups was significant （P 〈 0.01, t-test）. The CD44^± - cases were reduced from 21 （70.00%） to 12 （40.00%） after treatment with Fuzheng Yiliu granules, whereas the CD44^± -cases （69.70%） in the radiotherapy group remained unchanged. The difference between the treatment （40.00%） and control （69.70%） groups was significant （P 〈 0.05）. Although the nm23^±

关键词： Fuzheng Yiliu granule RBC immune function CD44 nm23 Esophageal carcinoma Metastasis protein CD44 controlled clinical trial

Gaussian process regressions on hot deformation behaviors of FGH98 nickel-based powder superalloy

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Journal of Materials Science & Technology 2023年第15期146卷 177-185页

作者： Jie xiong jian-Chao He xue-Song Leng Tong-Yi Zhang School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China Institute of Special Environment Physical Sciences Harbin Institute of TechnologyShenzhen 518055China Hong Kong University of Science and Technology(Guangzhou) Guangzhou 511400China

The hot deformation behaviors of FGH98 nickel-based powder superalloy were experimentally investigated and theoretically analyzed by Arrhenius models and machine learning(ML).Hot compression tests were conducted with a Gleeble-3800 thermo-mechanical simulation machine on the FGH98 superalloy at strain rates of 0.001–1 s–1 and temperatures of 1025–1175℃.The peak stresses under different deformation conditions were analyzed via the Sellars model and an ML-inspired Gaussian process regression(GPR)*** prediction of the GPR model outperformed that from the Sellars *** addition,the stress-strain responses were predicted by the GPR model and tested by experimentally measured stress-strain *** results indicate that the developed GPR model has great power with wide generalization capability in the prediction of hot deformation behaviors of FGH98 superalloy,as evidenced by the R2 value higher than 0.99 on the test dataset.

关键词： Hot compressive deformation Nickel-based powder superalloy Activation energy Gaussian process regression