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Extraction of Valuable Metals from Titanium-bearing Blast Furnace Slag by Acid Leaching

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 376-385页

作者：刘燕 CHEN xuegui MAO Shuaidong XIAO yadong LI Jiacong School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education Shenyang 110819China

To realize the resource utilization of the valuable metals in the titanium-containing blast furnace slag,the process route of “hydrochloric acid leaching-electrolysis-carbonization and carbon dioxide capture-preparation of calcium carbonate” was *** this study,the influences of process conditions on the leaching rates of calcium,magnesium,aluminum,and iron and the phases of the leaching residue were investigated for the leaching *** experimental results show that the HCl solution could selectively leach the elements from the titanium-containing blast furnace *** better leaching conditions are the HCl solution concentration of 4 mol/L,the leaching time of 30 min,the ratio of liquid volume to solid gas of 10 mL/g,and the stirring paddle speed of 300 r/*** the conditions,the leaching rates of calcium,magnesium,aluminum,and iron can reach 85.87%,73.41%,81.35%,and 59.08%,and the leaching rate of titanium is 10.71%.The iron and the aluminum are removed from the leachate to obtain iron-aluminum water purification agents,and the magnesium is removed from the leachate to obtain magnesium *** leaching residue phase is dominated by perovskite,followed by magnesium silicate and tricalcium aluminate,and the titaniumrich material could be obtained from the leaching residue by desiliconization.

关键词： titanium-containing blast furnace slag acid leaching valuable metals comprehensive utilization

Conditioned medium from human dental pulp stem cells treats spinal cord injury by inhibiting microglial pyroptosis

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Neural Regeneration Research 2024年第5期19卷 1105-1111页

作者： Tao Liu Ziqian Ma Liang Liu Yilun Pei Qichao Wu Songjie xu yadong Liu Nan Ding Yun Guan Yan Zhang xueming Chen Department of Orthopedic Surgery Beijing Luhe HospitalCapital Medical UniversityBeijingChina Department of Orthopedic Surgery Beijing Chaoyang HospitalCapital Medical UniversityBeijingChina Department of Stomatology Beijing Luhe HospitalCapital Medical UniversityBeijingChina Department of Anesthesiology and Critical Care Medicine School of MedicineJohns Hopkins UniversityBaltimoreMDUSA Department of Neurological Surgery School of MedicineJohns Hopkins UniversityBaltimoreMDUSA

Human dental pulp stem cell transplantation has been shown to be an effective therapeutic strategy for spinal cord ***,whether the human dental pulp stem cell secretome can contribute to functional recovery after spinal cord injury remains *** the present study,we established a rat model of spinal cord injury based on impact injury from a dropped weight and then intraperitoneally injected the rats with conditioned medium from human dental pulp stem *** found that the conditioned medium effectively promoted the recovery of sensory and motor functions in rats with spinal cord injury,decreased expression of the microglial pyroptosis markers NLRP3,GSDMD,caspase-1,and interleukin-1β,promoted axonal and myelin regeneration,and inhibited the formation of glial *** addition,in a lipopolysaccharide-induced BV2 microglia model,conditioned medium from human dental pulp stem cells protected cells from pyroptosis by inhibiting the NLRP3/caspase-1/interleukin-1β*** results indicate that conditioned medium from human dental pulp stem cells can reduce microglial pyroptosis by inhibiting the NLRP3/caspase-1/interleukin-1βpathway,thereby promoting the recovery of neurological function after spinal cord ***,conditioned medium from human dental pulp stem cells may become an alternative therapy for spinal cord injury.

关键词： BV2 conditioned medium dental pulp stem cells GSDMD microglia neuroinflammation NLRP3 pyroptosis spinal cord injury

晶体人生丨陶绪堂:从有机-无机复合材料走进多彩晶体世界

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人工晶体学报 2022年第9期51卷 1519-1522页

作者：徐亚东西北工业大学凝固技术国家重点实验室西安710072

有机-无机复合材料因其涉及范围更广,材料设计的可选择性大,同时可以兼具无机和有机材料的优点,近年来受到国内外研究人员的高度关注。此次访谈中,陶绪堂教授首先回顾了山东大学晶体材料研究所和晶体材料国家重点实验室在蒋民华院士带领... 详细信息

有机-无机复合材料因其涉及范围更广,材料设计的可选择性大,同时可以兼具无机和有机材料的优点,近年来受到国内外研究人员的高度关注。此次访谈中,陶绪堂教授首先回顾了山东大学晶体材料研究所和晶体材料国家重点实验室在蒋民华院士带领下,开展有机-无机复合非线性光学晶体材料(LAP)研究,并获得国家发明一等奖的历程,介绍了课题组目前在有机-无机复合晶体材料方面的研究进展,结合自身科研历程,重点分析了目前有机-无机复合材料发展的趋势和存在的主要问题,展望了有机-无机复合晶体薄膜在能源领域的应用潜力。最后指出要想从诸多有机-无机复合晶体中产生新的“中国牌”晶体,需要大家共同努力的方向。

关键词：有机-无机复合晶体中国牌晶体非线性光学晶体 LAP晶体钙钛矿太阳能电池薄膜

Implicit policy constraint for offline reinforcement learning

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CAAI Transactions on Intelligence Technology 2024年第4期9卷 973-981页

作者： Zhiyong Peng yadong Liu Changlin Han Zongtan Zhou National University of Defense Technology ChangshaChina

Offline reinforcement learning(RL)aims to learn policies entirely from passively collected datasets,making it a data‐driven decision *** of the main challenges in offline RL is the distribution shift problem,which causes the algorithm to visit out‐of‐distribution(OOD)*** distribution shift can be mitigated by constraining the divergence between the target policy and the behaviour ***,this method can overly constrain the target policy and impair the algorithm's performance,as it does not directly distinguish between in‐distribution and OOD *** addition,it is difficult to learn and represent multi‐modal behaviour policy when the datasets are collected by several different behaviour *** overcome these drawbacks,the au-thors address the distribution shift problem by implicit policy constraints with energy‐based models(EBMs)rather than explicitly modelling the behaviour *** EBM is powerful for representing complex multi‐modal distributions as well as the ability to distinguish in‐distribution samples and *** results show that their method significantly outperforms the explicit policy constraint method and other *** addition,the learnt energy model can be used to indicate OOD visits and alert the possible failure.

关键词： artificial intelligence artificial neural network learning(artificial intelligence) planning(artificial intelligence)

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建党百年中国农地制度变迁:动态演进与逻辑

农业经济问题 2021年第12期42卷 16-36页

作者：徐亚东西南大学经济管理学院重庆400715

本文基于"大历史观",在梳理农地制度演进的基础上,分析农地制度变迁的历史逻辑、实践逻辑和理论逻辑,这有助于党和国家判断并顺应历史潮流,制定科学有效的农地政策。研究发现,第一,百年以来,中国共产党带领人民实现中华民族从"站起来""... 详细信息

本文基于"大历史观",在梳理农地制度演进的基础上,分析农地制度变迁的历史逻辑、实践逻辑和理论逻辑,这有助于党和国家判断并顺应历史潮流,制定科学有效的农地政策。研究发现,第一,百年以来,中国共产党带领人民实现中华民族从"站起来""富起来"到"强起来"的历史性飞跃,经历了5次农地制度变迁,分别是由"国家公有、农民经营"向"农民私有、农民经营"、向"地主所有、租赁经营"、向"农民私有、农民经营"、向"集体所有、集体经营"、向"集体所有、农民经营"转变;本文构建"国内国际环境与农地制度调整变迁"理论分析框架,解释了中国农地制度百年变迁史。第二,中国农地制度变迁的历史逻辑表明,每次农地制度变迁都伴随国际国内环境变化,以及党和国家战略重点转移。第三,中国农地制度变迁的实践逻辑表明,农地制度调整是党和国家在推进农地制度变迁时,结合国内农村社会经济环境变化和制度实施过程中经验总结对农地制度进行的修正。第四,中国农地制度变迁的理论逻辑表明,党和国家在推进农地制度变迁和调整过程中,受到马克思主义的指导,同时中国农村实践也发展了马克思主义。

关键词：中国共产党百年农地制度变迁逻辑大历史观

Twin boundary dominated electric field distribution in CdZnTe detectors

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Chinese Physics B 2018年第11期27卷 316-320页

作者： Jiangpeng Dong Wanqi Jie Jingyi Yu Rongrong Guo Christian Teichert Kevin-P Gradwohl Bin-Bin Zhang Xiangxiang Luo Shouzhi Xi yadong xu State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an 710072China Key Laboratory of Radiation Detection Materials and Devices Northwestern Polytechnical UniversityXi'an 710072China School of Optoeletronic and Communication Engineering Xiamen University of TechnologyXiamen 361024China Institute of Physics Montanuniversitaet LeobenLeoben 8700Austria

The performance of CdZnTe X/γ-ray detectors is strongly affected by the electric field distribution in terms of charge transport and charge *** which determine the electric field distribution are not only electric contact,but also intrinsic defects,especially grown-in twin ***,the electric field distribution around twin boundaries is investigated in a CdZnTe bicrystal detector with a{111}–{111}twin plane using the Pockels electro-optic *** results of laser beam induced current pulses are also obtained by the transient current technique,and we discuss the influence of the twin boundary on the electric field *** studies reveal a significant distortion of the electric field,which is attributed to the buildup of space charges at twin ***,the position of these space charge regions depends on the polarity of the detector *** energy band model based on the formation of an n–n+–n junction across the twin boundary has been established to explain the observed results.

关键词： electric field distribution CdZnTe twin boundary Pockels effect

Lipocoacervate,a tunable vesicle for protein delivery

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Nano Research 2024年第10期17卷 9135-9140页

作者： Chia-Wei Yeh Nathaniel Wright Chelsea Loh Nabeen Chu yadong Wang Nancy E.and Peter C.Meinig School of Biomedical Engineering Cornell UniversityKimball Hall 290Ithaca 14853USA Human Biology Healthand Society.College of Human EcologyCornell UniversityIthaca 14853USA

Controlled delivery of proteins and other biologics is a growing medium of therapy for diseases previously *** we report a self-assembling,tunable vesicle for the controlled delivery of growth factors and *** made of heparin and a biocompatible polycation,PEAD,forms the core of the vesicle;lipids form the membrane of the *** call this vesicle lipocoacervate(LipCo),which has a high affinity for growth factors and cytokines due to *** is a tunable protein delivery *** vesicle size is controlled through polymer and salt *** functionalization enables potential for targeting capabilities with long-term storage through ***,the controlled delivery of therapeutics also avoids high toxicity to treated cells in *** we report on these key principles of LipCo assembly and design.

关键词： complex coacervate drug delivery protein delivery heparin lipid particle

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论新时期军旅小说对英雄性的开掘与表现

中州学刊 2008年第1期 234-236页

作者：徐亚东南阳师范学院文学与新闻传播学院河南南阳473061

新时期的军旅小说主要通过军人与自然的冲突、军人自身多重角色的冲突以及商品化浪潮对军人精神世界的冲击来完成对和平时期军人英雄性的开掘与表现。在这些多样的冲突中,审美的最终旨归都指向军人为"大我"而牺牲"小我"的奉献精神。军... 详细信息

新时期的军旅小说主要通过军人与自然的冲突、军人自身多重角色的冲突以及商品化浪潮对军人精神世界的冲击来完成对和平时期军人英雄性的开掘与表现。在这些多样的冲突中,审美的最终旨归都指向军人为"大我"而牺牲"小我"的奉献精神。军旅作家们也正是在军人乐于奉献和勇于牺牲的叙事中,凸现了军人人格的崇高、伟大等英雄性品格。因此,这种英雄性的表现体现出鲜明的道德审美价值判断特质。而这种英雄性审美的道德表现,正是传统英雄话语和革命英雄话语英雄性审美表现的主导审美追求。就此意义而论,上述英雄性的审美表现,充分说明了当代军旅作家对传统英雄话语和革命英雄话语英雄性的继承。

关键词：军旅小说英雄性冲突

陈独秀与胡适科学观之比较——兼论“五四”的“唯科学主义”问题

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中州学刊 2007年第3期 229-232页

作者：徐亚东南阳师范学院文学与新闻传播学院河南南阳473061

在五四新文化运动中,陈独秀和胡适大力提倡科学,坚持科学的理性精神,肯定科学的价值、作用和地位,对封建旧文化进行彻底的批判。他们侧重进化论的介绍,吸收进化论思想,以此观照五四时期的社会问题和文学问题,以服务新文化运动的革命目... 详细信息

在五四新文化运动中,陈独秀和胡适大力提倡科学,坚持科学的理性精神,肯定科学的价值、作用和地位,对封建旧文化进行彻底的批判。他们侧重进化论的介绍,吸收进化论思想,以此观照五四时期的社会问题和文学问题,以服务新文化运动的革命目标。但是,由于两者的文化身份不同,在对科学的理解、认识和应用上也存在着差异。立足于陈独秀、胡适五四时期的科学观,一些国外学者认为五四时期存在“唯科学主义”思潮,这种观点实际上有忽视具体历史语境,机械类比的缺失。

关键词：陈独秀胡适科学观进化论唯科学主义