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Deposition rate of hafnium crystal bar by iodide process

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Rare Metals 2014年第2期33卷 161-165页

作者： Li-Sen Tian yan-xi yin Zhi-Fang Hu Hong-Lin Jiang Zhong-Qi Li Li-Jun Wang Division of Rare Metals Materials & Metallurgy General Research Institute for Nonferrous Metals

Single variable and deposition weight methods were adopted in the experiment. The hafnium crystal bar was fabricated by the iodide process. Influence of hafnium filament temperature（K value）, temperature controlling method, types of feed, and the loading methods on the deposition rate were studied. The results show that the K value, temperature control method, types of feed, and the loading methods have obvious effects on the deposition rate of the hafnium crystal bar. The deposition rate increases with the K value rising in the range of certain temperature;the salt bath controlling temperature method could effectively obtain the better deposition rate; the greater the contact areas of the feeds are, the faster the deposition rate ***, the optimal iodide deposition techniques of preparing hafnium crystal bar are as follows： hafnium turnings as feed,molybdenum feed retainer charging, salt bath temperature controlling under the higher K value.

关键词： Iodide process Hafnium Deposition rate

PROPULSIVE PERFORMANCE AND VORTEX SHEDDING OF A FOIL IN FLAPPING MOTION

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Journal of Hydrodynamics 2003年第5期15卷 7-12页

作者： yang yan, Lu xi yun, yin xie zhen Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230026, China, Dept. of Mech. and Mech. Eng. Univ. of Sci. and Technol. of China Hefei 230026 China

The propulsive performance and vortex shedding of oscillating foil, whichmimics biological locomotion, were numerically investigated. The objectives of this study were todeal with unsteady force, in particular thrust force, exerted on the foil in pitching and plungingmotions, and to explore the relation of the propulsive performance with vortex structures near thefoil and vortex shedding in the near wake. The two-dimensional incompressible Navier-Stokesequations in the vorticity and stream-function formulation were solved by fourth-order essentiallycompact finite difference schemes for the space derivatives and a fourth-order Runge-Kutta schemefor the time advancement. To reveal the mechanism of the propulsive performance, the unsteady forceand the shedding of the trailing- and leading-edge vortices of the foil were analyzed. The effectsof some typical factors, such as the frequency and amplitude of the oscillation, the phasedifference between the pitching and plunging motions, and the thickness ratio of the foil, on thevortex shedding and unsteady force were discussed.

关键词： vortex dynamics vortex shedding thrust force unsteady flow flappingmotion

Technological conditions for purification of hafnium by iodide process

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Rare Metals 2020年第2期39卷 200-204页

作者： Li-Sen Tian yan-xi yin Zhi-Fang Hu Hong-Lin Jiang Zhong-Qi Li Li-Jun Wang Division of Rare Metals Materials&Metallurgy General Research Institute for Nonferrous MetalsBeijing100088China

In nuclear industry,the purity of hafnium control rod is usually significant,and the process parameters will affect the impurity *** this study,the four key factors(filament temperature,retort materials,feeds,and iodide reaction time)were *** is found that the impurity contents of Fe,Ni in the hafnium crystal bar decrease with the K value *** the retort materials and feed types have obvious influence on the impurity contents of hafnium crystal *** iodide reaction time has little effect on the impurity contents of hafnium crystal bar.

关键词： Hafnium Purity K value Iodide

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Neural Regeneration Research 2025年第2期20卷 366-377页

作者： Samuel Abokyi Dennis yan-yin Tse School of Optometry The Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative RegionChina Research Center for SHARP Vision The Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative RegionChina Center for Eye and Vision Research Sha TinHong Kong Special Administrative RegionChina

Retinal aging has been recognized as a significant risk factor for various retinal disorders,including diabetic retinopathy,age-related macular degeneration,and glaucoma,following a growing understanding of the molecular underpinnings of their *** comprehensive review explores the mechanisms of retinal aging and investigates potential neuroprotective approaches,focusing on the activation of transcription factor *** meta-analyses have demonstrated promising outcomes of transcription factor EB-targeted strategies,such as exercise,calorie restriction,rapamycin,and metformin,in patients and animal models of these common retinal *** review critically assesses the role of transcription factor EB in retinal biology during aging,its neuroprotective effects,and its therapeutic potential for retinal *** impact of transcription factor EB on retinal aging is cell-specific,influencing metabolic reprogramming and energy homeostasis in retinal neurons through the regulation of mitochondrial quality control and nutrient-sensing *** vascular endothelial cells,transcription factor EB controls important processes,including endothelial cell proliferation,endothelial tube formation,and nitric oxide levels,thereby influencing the inner blood-retinal barrier,angiogenesis,and retinal ***,transcription factor EB affects vascular smooth muscle cells,inhibiting vascular calcification and *** retinal pigment epithelial cells,transcription factor EB modulates functions such as autophagy,lysosomal dynamics,and clearance of the aging pigment lipofuscin,thereby promoting photoreceptor survival and regulating vascular endothelial growth factor A expression involved in *** cell-specific functions of transcription factor EB significantly impact retinal aging mechanisms encompassing proteostasis,neuronal synapse plasticity,energy metabolism,microvasculature,and inflammation,ultimately offering pro

关键词： age-related macular degeneration anti-aging interventions autophagy calorie restriction diabetic retinopathy exercise glaucoma neuromodulation phagocytosis photoreceptor outer segment degradation retinal aging transcription factor EB

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人工智能如何应对“空表征问题”

自然辩证法研究 2022年第12期38卷 91-96页

作者：魏屹东闫玺印山西大学哲学学院太原030006

“空表征问题”是关于概念或命题表达的对象是否真实存在于实现世界的问题。这个问题不仅普遍存在于我们日常生活的现实世界,也存在于科学探询的自然世界、可能世界或虚拟世界,在哲学上成为实在论和反实在论争论的焦点。在人工智能的语... 详细信息

“空表征问题”是关于概念或命题表达的对象是否真实存在于实现世界的问题。这个问题不仅普遍存在于我们日常生活的现实世界,也存在于科学探询的自然世界、可能世界或虚拟世界,在哲学上成为实在论和反实在论争论的焦点。在人工智能的语境下,空表征转化成了虚拟表征,人工智能如何应对空表征,实质上就是如何应对虚拟表征,具体说可通过生成性人工智能、虚拟数字化和图像构造来应对。这些应对方法事实上是人工智能对设想对象或虚拟对象的适应性表征,因为空表征的目的也是为了实现主体的意图或目标。

关键词：人工智能空表征虚拟表征数字化适应性表征

Neuronal regulated cell death in aging-related neurodegenerative diseases:key pathways and therapeutic potentials

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Neural Regeneration Research 2025年第8期20卷 2245-2263页

作者： Run Song Shiyi yin Jiannan Wu Junqiang yan Department of Neurology The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina Neuromolecular Biology Laboratory The First Affiliated HospitalCollege of Clinical Medicine of Henan University of Science and TechnologyLuoyangHenan ProvinceChina

Regulated cell death(such as apoptosis,necroptosis,pyroptosis,autophagy,cuproptosis,ferroptosis,disulfidptosis)involves complex signaling pathways and molecular effectors,and has been proven to be an important regulatory mechanism for regulating neuronal aging and ***,excessive activation of regulated cell death may lead to the progression of aging-related *** review summarizes recent advances in the understanding of seven forms of regulated cell death in age-related ***,the newly identified ferroptosis and cuproptosis have been implicated in the risk of cognitive impairment and neurodegenerative *** forms of cell death exacerbate disease progression by promoting inflammation,oxidative stress,and pathological protein *** review also provides an overview of key signaling pathways and crosstalk mechanisms among these regulated cell death forms,with a focus on ferroptosis,cuproptosis,and *** instance,FDX1 directly induces cuproptosis by regulating copper ion valency and dihydrolipoamide S-acetyltransferase aggregation,while copper mediates glutathione peroxidase 4 degradation,enhancing ferroptosis ***,inhibiting the Xc-transport system to prevent ferroptosis can increase disulfide formation and shift the NADP^(+)/NADPH ratio,transitioning ferroptosis to *** insights help to uncover the potential connections among these novel regulated cell death forms and differentiate them from traditional regulated cell death *** conclusion,identifying key targets and their crosstalk points among various regulated cell death pathways may aid in developing specific biomarkers to reverse the aging clock and treat age-related neurodegenerative conditions.

关键词： apoptosis autophagy cuproptosis disulfidptosis ferroptosis necroptosis neurodegenerative disease neurological aging diseases PANoptosis pyroptosis

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认知心理学的基本内涵及对学习过程的启示

晋中学院学报 2018年第5期35卷 27-30页

作者：闫玺印山西大学哲学社会学学院山西太原030006

元认知对信息的加工有着非常显著的作用,它强调学习者对"自我"的认识,特别是对自我认知能力的认识。学生在学习过程中,可以借助于对元认知的认识对自我进行觉察和监督。认知加工也是在了解自我的基础上发生的,即在认识自我固有知识结构... 详细信息

元认知对信息的加工有着非常显著的作用,它强调学习者对"自我"的认识,特别是对自我认知能力的认识。学生在学习过程中,可以借助于对元认知的认识对自我进行觉察和监督。认知加工也是在了解自我的基础上发生的,即在认识自我固有知识结构的基础上,把新知识纳入到一定的认识结构之中,从而更快和更有效率地记住所学知识,甚至把外在信息内化为个体内心世界的一部分。在教学过程中,可以通过一些测试和专门培训,让学生在认识自我及周围环境的基础上,综合培养和提高学生的元认知及认知加工能力。同时,把学习的外在动机转化为内在动机,增强学生自觉主动学习的愿望。

关键词：元认知认知加工认知动机学习策略

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中国共产党人精神谱系的社会记忆建构

晋中学院学报 2023年第1期40卷 1-5页

作者：闫玺印山西大学哲学社会学学院山西太原030006

中国共产党在不同阶段形成的伟大精神,构筑起了中国共产党人精神谱系,支撑着党和国家的事业发展不断前进。以社会记忆和符号学理论为研究视角,构建由发送者、信息内容、指称对象、编码、传播介质和接收者等要素组成的中国共产党人精神... 详细信息

中国共产党在不同阶段形成的伟大精神,构筑起了中国共产党人精神谱系,支撑着党和国家的事业发展不断前进。以社会记忆和符号学理论为研究视角,构建由发送者、信息内容、指称对象、编码、传播介质和接收者等要素组成的中国共产党人精神谱系社会记忆符号系统,具有重要现实意义。这也是推进政治认同、情感认同的一种必要实践途径。符号发送者依靠自身优势进行信息整理,并借助符号的编码程序进行筛选、解码和再现,将信息以显性的形式传播给符号接收者——广大人民群众,引导他们感悟信息所表征的指称对象,从而实现中国共产党人精神谱系的社会记忆建构。

关键词：社会记忆中国共产党人精神谱系符号系统

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对虚构表征的认知理解

晋中学院学报 2020年第6期37卷 26-30页

作者：闫玺印山西大学哲学与社会学学院山西太原030006

表征是基于语境的表征,脱离语境来谈表征难以解决表征的语义承载问题。虚构所创造出来的世界不是实在的世界,它既是对实在世界之外的可能世界的真实情况的描述,又是一种被建构的特殊的可能世界。诉诸虚构运算符来理解对虚构作品内容的真... 详细信息

表征是基于语境的表征,脱离语境来谈表征难以解决表征的语义承载问题。虚构所创造出来的世界不是实在的世界,它既是对实在世界之外的可能世界的真实情况的描述,又是一种被建构的特殊的可能世界。诉诸虚构运算符来理解对虚构作品内容的真值,并弄清楚情节中什么为真,基于语境实在论找出虚构中的真,以此化解虚构中循环性的威胁。

关键词：虚构表征真实在