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选煤厂复摆颚式破碎机关键部件的受力分析

机械管理开发 2025年第1期40卷 71-73页

作者：梁鑫山西西山煤电股份有限公司镇城底矿选煤厂山西古交030200

为了确保选煤厂破碎机安全、稳定地运行,以PE-750×1060复摆颚式破碎机为例,对复摆颚式破碎机关键部件受力进行分析。通过有限元模型的构建,进而分别模拟分析了动颚、衬板及机架的受力特性,以此判断破碎机强度是否符合规定要求,及时寻... 详细信息

为了确保选煤厂破碎机安全、稳定地运行,以PE-750×1060复摆颚式破碎机为例,对复摆颚式破碎机关键部件受力进行分析。通过有限元模型的构建,进而分别模拟分析了动颚、衬板及机架的受力特性,以此判断破碎机强度是否符合规定要求,及时寻找出破碎机中的不足之处,从而为破碎机结构优化设计提供支持,使其在选煤厂生产作业当中发挥出更大的作用。

关键词：选煤厂复摆颚式破碎机受力分析关键部件

义务教育学校课后服务的成本分担:国际经验、政策分析与优化路径

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中国教育学刊 2025年第2期 68-74页

作者：龚欣梁雨菲高巍华中师范大学教育学院湖北武汉430079

“双减”政策的颁布使得课后服务成本分担问题受到更多关注,完备的成本分担体系,是提升课后服务质量、促进教育优质均衡发展的有力保障。国外以政府承担为主,多措并举鼓励多元主体参与成本分担。政策文本分析和国际经验借鉴发现,我国学... 详细信息

“双减”政策的颁布使得课后服务成本分担问题受到更多关注,完备的成本分担体系,是提升课后服务质量、促进教育优质均衡发展的有力保障。国外以政府承担为主,多措并举鼓励多元主体参与成本分担。政策文本分析和国际经验借鉴发现,我国学校课后服务成本分担政策的优点主要体现为兼顾因地制宜与维护公益性,弊端主要在于政府投入责任和主体之间责任规定不明晰。7省83校实证调查研究发现,当前学校存在三种典型做法:仅有家长出资、学校与家长共担成本、仅学校承担成本,其余做法较为分散。资源约束、重视不够、服务属性认知、合作困境等因素共同造成经费投入有限、资金来源单一、政府资助不足等问题。在此基础上,提出在克服资源困境与认知困境的基础上加大财政投入、在提高服务质量前提下引导家长适度提高承担水平、建构有效激励约束机制盘活社会资源等优化建议。

关键词：课后服务成本分担国际经验 “双减”政策经费投入

SEL1L-mediated endoplasmic reticulum associated degradation inhibition suppresses proliferation and migration in Huh7 hepatocellular carcinoma cells

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World Journal of Gastroenterology 2025年第10期31卷 118-133页

作者： Jia-Nan Chen Li Wang Yu-xin He Xiao-Wei Sun Long-Jiao Cheng Ya-Nan Li Sei Yoshida zhong-Yang Shen School of Medicine Nankai UniversityTianjin 300071China Department of Organ Transplant Tianjin First Central HospitalSchool of MedicineNankai UniversityTianjin 300192China State Key Laboratory of Medicinal Chemical Biology College of Life SciencesFrontiers Science Center for Cell ResponsesNankai UniversityTianjin 300071China Research Institute of Transplant Medicine Nankai UniversityTianjin 300192China Nankai International Advanced Research Institute Shenzhen 518045Guangdong ProvinceChina Tianjin Key Laboratory for Organ Transplantation Tianjin First Central HospitalSchool of MedicineNankai UniversityTianjin 300192China

BACKGROUND Proteins play a central role in regulating biological functions,and various pathways regulate their synthesis and *** reticulum-associated protein degradation(ERAD)is crucial for monitoring protein synthesis and processing unfolded or misfolded proteins in actively growing tumor ***,the role of the multiple ERAD complexes in liver cancer remains *** To elucidate the effects of SEL1L-mediated ERAD on Huh7 and explore the underlying mechanisms in vivo and in *** Huh7 cells were treated with ERAD inhibitor to identify ERAD’s *** counting kit-8,5-ethynyl-2’-deoxyuridine and colony formation experiments were *** level and migration ability were assessed using fluorescence activated cell sorting and Transwell assay,***7 SEL1L knockout cell line was established via clustered regularly interspaced short palindromic repeats,proliferation,apoptosis,and migration were assessed through previous *** role of SEL1L in vivo and the downstream target of SEL1L were identified using Xenograft and mass spectrometry,*** The ERAD inhibitor suppressed cell proliferation and migration and promoted ***1L-HRD1 significantly influenced Huh7 cell ***1L knockout suppressed tumor cell proliferation and migration and enhanced *** spectrometry revealed EXT2 is a primary substrate of ***1L knockout significantly increased the protein expression of ***,EXT2 knockdown partially restored the effect of SEL1L *** ERAD inhibition suppressed the proliferation and migration of Huh7 and promoted its ***2 plays an important role and ERAD might be a potential treatment for Huh7 hepatocellular carcinoma.

关键词： Hepatocellular carcinoma Endoplasmic reticulum stress Endoplasmic reticulum-associated protein degradation SEL1L EXT2

Short-term efficacy of early percutaneous cholecystostomy for pancreatitis and factors associated with recurrence and mortality

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World Journal of Gastroenterology 2025年第6期31卷 20-33页

作者： xin Yan Feng Xie Xiao-Dan Zhao liang Li Jia-Xian Meng Department of Nuclear Medicine The People’s Hospital of Liaoning ProvinceShenyang 110016Liaoning ProvinceChina Department of Interventional Medicine Jin Qiu Hospital of Liaoning ProvinceShenyang 110016Liaoning ProvinceChina Department of General Surgery The People’s Hospital of Liaoning ProvinceShenyang 110016Liaoning ProvinceChina Department of Science and Education The People’s Hospital of Liaoning ProvinceShenyang 110016Liaoning ProvinceChina

BACKGROUND Percutaneous cholecystostomy(PC)can be used as a bridging therapy for moderately severe acute biliary pancreatitis(MSABP).Currently,there are only a limited number of reports of MSABP using *** To assess the short-term outcomes of early PC in MSABP and factors associated with recurrence and death in *** Patients who received conservative treatment or PC for acute biliary pancreatitis(ABP)in Liaoning Provincial People’s Hospital from January 2017 to July 2022 were collected.A total of 54 patients with MSABP who received early-stage PC and 29 patients who received conservative *** short-term efficacy of PC was *** on whether there is a recurrence,compare the characteristics of the pre-PC and explore the factors of ***-PC features were compared and predictors were discussed,depending on the *** After 3 days of PC treatment,patients experienced a reduction in inflammatory markers compared to the conservative *** PC,patients were divided into non-recurrence(n=37)and recurrence(n=10)groups,and the results showed that age was an independent correlation affecting ABP recurrence[odds ratio(OR)=0.937,95%confidence interval(CI):0.878-0.999;P=0.0470.7).When the Youden index maximum was 0.565,the cut-off value was 5.5,the sensitivity was 71.4%,and the specificity was 85.1%.CONCLUSION PC is an important method in the early years(<72 hours)of *** is a protective factor against recurrence of *** pre-PC CCI is significantly associated with mortality.

关键词： Acute biliary pancreatitis Percutaneous cholecystostomy The revised Atlanta classification Charleson Comorbidity Index Yoden index

Formation and transformation of metastable LPSO building blocks clusters in Mg-Gd-Y-Zn-Zr alloys by spinodal decomposition and heterogeneous nucleation

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Journal of Magnesium and Alloys 2024年第2期12卷 673-686页

作者： xin Zhao zhong Yang Jiachen Zhang Minxian liang Liying Wang School of Materials Science and Chemical Engineering Xi’an Technological UniversityXi’an 710021China Xi’an Tianli Metal Composite Material Co.Ltd. Xi’an 710299China

To study the formation and transformation mechanism of long-period stacked ordered(LPSO)structures,a systematic atomic scale analysis was conducted for the structural evolution of long-period stacked ordered(LPSO)structures in the Mg-Gd-Y-Zn-Zr alloy annealed at 300℃~500℃.Various types of metastable LPSO building block clusters were found to exist in alloy structures at different temperatures,which precipitate during the solidification and homogenization *** stability of Zn/Y clusters is explained by the first principles of density functional *** LPSO structure is distinguished by the arrangement of its different Zn/Y enriched LPSO structural units,which comprises local fcc stacking sequences upon a tightly packed *** presence of solute atoms causes local lattice distortion,thereby enabling the rearrangement of Mg atoms in the different configurations in the local lattice,and local HCP-FCC transitions occur between Mg and Zn atoms occupying the nearest neighbor *** finding indicates that LPSO structures can generate necessary Schockley partial dislocations on specific slip surfaces,providing direct evidence of the transition from 18R to *** of the LPSO,devoid of any defects and non-coherent interfaces,was observed separately from other precipitated *** a result,the precipitation sequence of LPSO in the solidification stage was as follows:Zn/Ycluster+Mg layers→various metastable LPSO building block clusters→18R/24R LPSO;whereas the precipitation sequence of LPSO during homogenization treatment was observed to be as follows:18R LPSO→various metastable LPSO building block clusters→14H *** these,14H LPSO was found to be the most thermodynamically stable structure.

关键词： LPSO Spinodal decomposition Homogenization treatment Clusters Phase transformation

基于风格迁移的柔性输尿管内窥镜图像深度估计

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天津大学学报（自然科学与工程技术版） 2025年第1期58卷 47-55页

作者：辛运帏尹晶晶赵煜代煜崔亮殷小涛南开大学网络空间安全学院天津300071 天津市网络与数据安全技术重点实验室天津300071 南开大学机器人与信息自动化研究所天津300350 民航总医院泌尿外科北京100123 解放军总医院第四医学中心泌尿外科北京100048

输尿管内窥镜手术是目前针对肾结石的主流治疗方案,其外形细长、镜体柔软,能够灵活穿越人体自然腔道的内径狭窄的尿道和输尿管,检查视野范围更广,使医生能够更好地观察到病变区域.但一般的输尿管内窥镜仅配备单目摄像头进行配合手术操作... 详细信息

输尿管内窥镜手术是目前针对肾结石的主流治疗方案,其外形细长、镜体柔软,能够灵活穿越人体自然腔道的内径狭窄的尿道和输尿管,检查视野范围更广,使医生能够更好地观察到病变区域.但一般的输尿管内窥镜仅配备单目摄像头进行配合手术操作,无法借助额外设备获取数据导致了其图像信息的匮乏;同时,相比于胃肠、鼻镜等手术场景,本研究的肾内场景在不具备公开数据集的同时,图像质量参差不齐,表面纹理细节不足,孔洞区域褶皱少,受模糊反光等干扰大,都易使深度估计受到影响针对以上问题,提出了一种基于改进风格迁移模型的深度估计方法.该方法首先根据术前CT图像重建肾脏内部腔道模型并提取中心路径,将虚拟内窥镜的摄像头设置在插值后的路径点上,构建了虚拟内窥镜漫游图像与深度估计图像一一对应的数据集,并基于此数据集训练了一个深度估计模型;随后,使用添加高效通道注意力(ECA)模块的改进风格迁移模型,将真实内窥镜图像域迁移至虚拟内窥镜图像域;最后,再将经由风格迁移产生的虚拟内窥镜图像送入上述训练得来的深度估计模型中,最终实现真实内窥镜图像的深度估计.所提方法的可行性及有效性在输尿管钬激光碎石术的图像中得到验证.

关键词：深度估计风格迁移注意力机制深度学习

Study of thermal decoherence of harmonic oscillators

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原子与分子物理学报 2025年第5期42卷 108-114页

作者： LI Jian ZHOU Gao-liang YAN Zheng-xin LIU Wei WANG Zhao-Qi College of Science Xi’an University of Science and TechnologyXi’an 710054China

The thermal decoherence of harmonic oscillators is investigated *** quantum system presented here is a one-dimensional oscillator with angular frequency,which is surrounded by a thermal bath of environmental *** are various environmental oscillators with different angular frequency(below an ultraviolet cutoff).At the beginning,the quantum system is a pure state and the environmental oscillators are in thermodynamic equilibrium with *** a period,the system-environment interactions inspire significant decoherence of the quantum *** decoherence is displayed by explicit calculations of the purity and von Neumann entropy of the quantum *** is worth noting that the decoherence could be significant even in the weak coupling and low temperature case due to the large amount of environmental degrees of *** the decoherence process is inspired between the quantum system and an ordinary thermal environment here,the thermal decoherence result is quite general.

关键词： Quantum decoherence Grand canonical ensemble Oscillators

基于知识封装的船舶阻力性能虚拟试验流程研发及其应用效果分析

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船舶力学 2025年第1期29卷 23-30页

作者：朱锋李胜忠鲍家乐梁川赵峰中国船舶科学研究中心江苏无锡214082 深海技术科学太湖实验室江苏无锡214082

本文依托“属性细分,知识封装”的原则,开展基于RANS方程的船舶阻力性能虚拟试验应用流程研究,通过封装虚拟试验专家知识,建立船舶阻力性能虚拟试验应用流程。该流程对标物理水池模型试验流程,用户仅需输入试验对象几何曲面以及主尺度参... 详细信息

本文依托“属性细分,知识封装”的原则,开展基于RANS方程的船舶阻力性能虚拟试验应用流程研究,通过封装虚拟试验专家知识,建立船舶阻力性能虚拟试验应用流程。该流程对标物理水池模型试验流程,用户仅需输入试验对象几何曲面以及主尺度参数,即可开展阻力性能精细预报工作。经大子样验证,该流程预报精度高、效果好,与传统CFD阻力数值计算相比,可大幅提高船舶阻力性能的评估效率,缩短船舶性能研发周期,大幅降低应用门槛。

关键词：阻力性能专家知识应用流程效益分析

Late contralateral recurrence of retinal detachment in incontinentia pigmenti:A case report

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World Journal of Clinical Cases 2022年第13期10卷 4171-4176页

作者： You-Ran Cai Yong liang xin zhong Department of Ophthalmology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi ProvinceChina

BACKGROUND Incontinentia pigmenti(IP)is a rare X-linked genetic *** mainly manifests as skin lesions and causes problems in the eyes,teeth,bones,and central nervous *** the various ocular manifestations,the most severe with difficult recovery is retinal detachment(RD).Here,we report an unusual case of bilateral asymmetrical *** SUMMARY We present the case of an 11-year-old Chinese girl with IP who complained of sudden blurring of vision in the left *** that time,she had been blind in her right eye for 4 *** with traction was observed in both eyes.A massive retinal proliferative membrane,exudation,and hemorrhage were seen in the left *** performed vitrectomy in her left *** visual acuity recovered to 20/50,and her retina had flattened within 2 d after *** the 3-mo follow-up,we performed retinal laser treatment of the non-perfused retinal area in her left ***,her visual acuity returned to 20/32,and no new retinal abnormalities *** In patients with IP with fundal abnormalities in one eye,it is important to focus on the rate of fundal change in the other *** in its early stages can be effectively treated with timely vitrectomy and laser photocoagulation.

关键词： Incontinentia pigmenti Bilateral Retinal detachment Shift code mutation Vitrectomy Case report