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Journal of Rare Earths 2024年第7期42卷 1282-1288,I0003页

作者： Yikuan Hu Jiajie Li shengyu sun Shuwei Zhong Munan Yang Xiaoqiang Yu Sajjad Ur Rehman Xi Yu Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices College of Rare EarthsJiangxi University of Science and TechnologyGanzhou341000 National Rare Earth Functional Materials Innovation Center Ganzhou341000China Ganzhou Fortune Electronic Ltd. Ganzhou341000China

It is still a challenge to simultaneously enhance coercivity(H_(cj))and remanence(J_(r))of hot-deformed Nd-Fe-B magnet due to the coercivity-remanence trade-off ***,we achieved this balance between H_(cj)and Jr by flake Cu powder assisted DyF_(3)interflake *** Hcj increases from 1218 to 1496 kA/m and Jr increases from 1.32 to 1.34 T compared with the original *** show that the width of coarse grain layers reduces because of the introduction of flake Cu,which increases the contact areas of the adjacent grains at ribbon interfaces and suppresses the excessive growth of *** stronger degree of texture and higher density compared with the original magnet should take the responsibility for the increase of J_(r).Additionally,the aggregation regions of rare earth rich(RE-rich)phase reduce and the betterment of the microstructure is another reason for the enhancement of Jr in the flake Cu aided DyF_(3)hot-deformed *** strategy of using flake powder additives provides a promising method for optimizing microstructure and enhancing magnetic properties of hot-deformed Nd-Fe-B magnets.

关键词： Rare earths Nd-Fe-B Hot-deformed magnet Flake powder Interflake addition Remanence

G-Eco-AAc/OTF复合层导电水凝胶的制备及在柔性传感领域的应用

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山西化工 2024年第6期44卷 3-7页

作者：高子健孙晟宇金朝辉孙健吉林化工学院石油化工学院吉林吉林132022

导电水凝胶作为一种高性能聚合物材料,被广泛应用于柔性传感器与储能设备等领域。然而,大多数导电水凝胶均为单层结构,且力学性能较弱。而复合层水凝胶可以通过各层之间的结合,进行力学性能上的互补。因此,需要从水凝胶的结构上进行设计... 详细信息

导电水凝胶作为一种高性能聚合物材料,被广泛应用于柔性传感器与储能设备等领域。然而,大多数导电水凝胶均为单层结构,且力学性能较弱。而复合层水凝胶可以通过各层之间的结合,进行力学性能上的互补。因此,需要从水凝胶的结构上进行设计,使其具有优异的力学性能,并具有更多功能。在此,通过原位聚合的方式,将石墨烯层、Ecoflex弹性体和AAc/OTF水凝胶进行聚合,制备了一款兼具黏附性能、力学拉伸性能和导电性能的复合层水凝胶G-Eco-AAc/OTF。由于水凝胶表面羧基、羟基和磺酸基团的存在,该水凝胶材料展示了良好的黏附性。将G-Eco-AAc/OTF复合层导电水凝胶应用于运动传感领域,可对手指、手腕、肘部和膝盖处进行信号的监测,并且测试结果稳定。这为下一代可穿戴柔性传感设备奠定了基础。

关键词：复合层水凝胶传感器黏附性能力学拉伸性能导电性能

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“种子-土壤”说与胃癌的发生、发展

中医学报 2024年第5期39卷 948-952页

作者：孙圣雨徐立然侯思伟河南中医药大学河南郑州450046 河南中医药大学第一附属医院河南郑州450000 河南省病毒性疾病中医药防治重点实验室河南郑州450000

“种子-土壤”说的核心观点为癌症发生具有三个要素:基因、环境和癌,可分别形象地认识为种子、土壤和癌肿(毒草)。在中医理论中,就有“土爰稼穑”的概念,并且脾胃在中医理论体系当中就以“土”性居后天之本的重要位置。同时,近年的研究... 详细信息

“种子-土壤”说的核心观点为癌症发生具有三个要素:基因、环境和癌,可分别形象地认识为种子、土壤和癌肿(毒草)。在中医理论中,就有“土爰稼穑”的概念,并且脾胃在中医理论体系当中就以“土”性居后天之本的重要位置。同时,近年的研究表明,中医体质与人体致病、治疗与预后密切相关。中医辨证论治可通过对“土壤”偏性及偏颇体质的整体调整,杜绝“种子”的生长发育,从本质上干预胃癌的发生。将中医辨证论治与“种子-土壤”说原理相结合,通过改变“土壤”环境,以辨证论治为法,以扶正祛邪为治则,以阴阳平衡为目标,可达到纠正“土壤”偏性、祛除病理产物的效果。

关键词： “种子-土壤”说胃癌胃府中医体质

Unconventional metamagnetic phase transition in R_(2)In(R=Nd, Pr)with lambda-like specific heat and nonhysteresis

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Journal of Materials Science & Technology 2022年第6期101卷 80-84页

作者： Weibin Cui Guiquan Yao shengyu sun Qiang Wang Jie Zhu Sen Yang Key Laboratory of Electromagnetic Processing of Materials Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China State Key Laboratory of Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China

The phase transition of Nd_(2)In and Pr_(2)In has been studied and found to be between the first-order and second-order *** any hysteresis nor obvious cell volume changes are *** the field-triggered metamagnetism is demonstrated with lambda-like peak on specific heat *** the field change of 7 T,giant magnetic entropy changes of 13.2 J kg^(-1)K^(-1) and 19.5 J kg^(-1)K^(-1) and adiabatic temperature changes of 6.5 K and 7.4 K have been achieved in Nd_(2)In and Pr_(2) In alloys respectively,which is partially contributed by strong magnetoelastic coupling represented by high saturation magnetostriction of~450 *** unique feature is proposed to be originated from the delocalized 5d electrons,as evidenced by the negative magnetoresistance caused by the phase transition.

关键词： Metamagnetic transition Magnetic entropy change Magnetocaloric effects Magnetostriction

Preoperative functional MRI localization of language areas in Chinese patients with brain tumors Validation with intraoperative electrocortical mapping

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Neural Regeneration Research 2012年第20期7卷 1563-1569页

作者： Hechun Xia Wei Huang Liang Wu Hui Ma Xiaodong Wang Xuexin Chen shengyu sun Xiaoxiong Jia Department of Neurosurgery General Hospital of Ningxia Medical University Yinchuan 750004 Ningxia Hui Autonomous Region China Department of Neurosurgery Hanzhong Central Hospital Hanzhong 723000 Shaanxi Province China

Ten Chinese patients with brain tumors involving language regions were selected. Preoperative functional MRI was performed to locate Broca＇s or Wernicke＇s area, and the cortex that was essential for language function was determined by electrocortical mapping. A site-by-site comparison between functional MRI and electrocortical mapping was performed with the aid of a neuronavigation device. Results showed that the sensitivity and specificity of preoperative functional MRI were 80.0% and 85.0% in Broca＇s area and 66.6% and 85.2% in Wemicke＇s area, respectively. These experimental findings indicate that functional MRI is an accurate, reliable technique with which to identify the location of Wernicke＇s area or Broca＇s area in patients with brain tumors.

关键词： functional MRI brain tumor Chinese language brain mapping intraoperative electrocorticalmapping Wernicke's area Broca's area regeneration neural regeneration

热流道板用含硫耐蚀塑料模具钢调质工艺及组织研究

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模具制造 2024年第1期24卷 95-97页

作者：孙盛宇叶世圣付博王勇胜郭杰东北特殊钢集团股份有限公司技术中心辽宁大连116105 东北特殊钢集团股份有限公司第二轧钢厂辽宁大连116105

分析了1.2085模具钢的特性,对不同调质工艺的1.2085模具钢的显微组织及硬度进行了对比分析。结果表明,1.2085大规格扁钢采用重新加热喷水冷却+两次回火工艺生产,1.2085小规格扁钢采用轧后空冷+两次回火或重新加热空冷+两次回火工艺生产... 详细信息

分析了1.2085模具钢的特性,对不同调质工艺的1.2085模具钢的显微组织及硬度进行了对比分析。结果表明,1.2085大规格扁钢采用重新加热喷水冷却+两次回火工艺生产,1.2085小规格扁钢采用轧后空冷+两次回火或重新加热空冷+两次回火工艺生产,其硬度和金相组织可满足作为热流道板模具的使用要求。

关键词：调质显微组织含硫耐蚀塑料模具钢 1.2085 喷水冷却

Divergent responses of runoff to climate change in the upper basins of the Third Pole dominated by westerlies and monsoon

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Science China Earth Sciences 2024年第8期67卷 2592-2614页

作者： Qikai sun Fengge SU He sun State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100101China

The diverse climates,distribution of snow and glaciers,and geographic locations directly affect the runoff response to climate change in the upper basins of the Third *** present,a comprehensive analysis of runoff variations and their distinct responses to climate change in the westerlies-and monsoon-dominated upper basins is still *** study comprehensively analyzed annual runoff variations in westerlies-dominated basins(the upper basins of the Aksu(UAKS),Syr Darya(USRD),Yarkant(UYK),Hotan(UHT),Amu Darya(UAMD),and Indus(UI))and monsoon-dominated basins(the upper basins of the Yangtze(UYA),Yellow(UYE),Lancang(ULC),Nujiang(UNJ),and Yarlung Zangbo(UYZ))of the Third Pole from 1961 *** multi-source meteorological data and large-scale circulation factors,this study investigated the divergent responses of runoff in the upper basins to climate change,and explored the large-scale circulation mechanisms underlying runoff variations in these upper *** results showed that:(1)The annual runoff in the majority of upper basins(except for the UYE and UYZ)exhibited an increasing trend,and the annual runoff in the UAKS,UYK,and UI showed a significant increasing trend from1961 to *** annual runoff in the upper basins of the Third Pole changed abruptly from decreasing to increasing between the 1980s and 2000s,with the exception of the UYE.(2)The runoff in the monsoon-dominated upper basins has been controlled primarily by changes in precipitation over the past 55 *** contrast,the runoff in the westerlies-dominated upper basins exhibited three distinct long-term responses to climate change:temperature-dominated(UYK and UHT),precipitation-dominated(USRD and UAMD),and the combined influence of precipitation and temperature(UAKS and UI).Since the 1960s,the sensitivity of runoff to warm season temperature changes in the most westerlies-dominated upper basins has decreased,while the response of runoff to precipitation changes has intensified.(3)The stud

关键词： Upper basins of the Third Pole Climate change Westerlies and monsoon Runoff variations Large-scale circulation factors

New perspectives on deep carbon cycling

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Science China Earth Sciences 2024年第8期67卷 2411-2422页

作者： Weidong sun Center of Deep Sea Research Key Laboratory of Ocean Observation and ForecastingInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laoshan Laboratory Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

The proto-atmosphere serves as a crucial starting point for the carbon *** based on atmospheric data from Mars and Venus suggest that Earth's proto-atmosphere contained>110 bar of CO_(2)and>2.6 bar of *** protoatmosphere had over 1000 bar of water vapor during the magma ocean stage,assuming the proto-ocean had a volume of two oceans of *** this stage both water and carbon dioxide were in a supercritical state at the magma-atmosphere *** serpentinization reactions occurred due to rock-water interaction,producing abundant ***,nitrogen is reduced to ammonia,and carbon dioxide to methane,forming carbonate *** proto-atmosphere dominated by methane,ammonia,and hydrogen formed a significant amount of amino acids through *** process is essential not only to the origin of life,but also to the early carbon-nitrogen cycle on *** the Hadean eon,a large amount of CO_(2)was sequestered as carbonate and organic ***,it mainly entered the deep mantle through mantle overturn or *** the mantle transition zone,carbonate undergoes“Redox freezing”,where carbonate is reduced to diamond through oxidation of ferrous iron in the *** the lower mantle,Fe^(2+)undergoes disproportionation reactions,forming Fe^(3+)and metallic *** these,Fe^(3+)mainly resides in bridgmanite,thereby increasing the oxygen fugacity of the lower mantle,while metallic iron falls to the Earth's *** distribution of carbon in the mantle is crucial for deep carbon *** density curves of diamond and mantle peridotite melt intersect at the bottom of the mantle transition zone(about 660 km).This density crossover leads to the accumulation of diamond during the magma ocean *** materials such as subducting slabs enter the lower mantle,compensatory upwelling of lower mantle material *** enters the upper mantle,decomposes,releasing Fe^(3+)ions and oxidizes diamond

关键词： Carbon cycling Proto-atmosphere Amino acids Subduction initiation Passive margin subduction Atmospheric carbon dioxide

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科学儿童保健对幼儿健康发育成长的影响

中国卫生标准管理 2020年第8期11卷 16-18页

作者：孙胜玉淄博市妇幼保健院儿童保健科山东淄博255029

目的研究科学儿童保健对幼儿健康发育成长的影响。方法选取本院于2018年3月-2019年5月收治的140例幼儿作为主要研究对象,随机将幼儿分为对照组与观察组,对照组使用常规保健方式,观察组使用科学儿童保健方式,对比两组幼儿的身体生长发育... 详细信息

目的研究科学儿童保健对幼儿健康发育成长的影响。方法选取本院于2018年3月-2019年5月收治的140例幼儿作为主要研究对象,随机将幼儿分为对照组与观察组,对照组使用常规保健方式,观察组使用科学儿童保健方式,对比两组幼儿的身体生长发育情况以及幼儿的营养性疾病的发生情况。结果观察组幼儿的身体发育情况明显优于对照组,组间差异具有统计学意义(P0.05),对照组的幼儿出现佝偻病的情况明显高于观察组,组间差异具有统计学意义(P<0.05)。结论使用科学儿童保健的方式对幼儿进行保健,可以有效的使幼儿的生长发育情况得到提高,同时还可以降低疾病的发生概率。

关键词：科学保健健康发育影响幼儿

Fossil Equidae in the Linxia Basin with Biostratigraphic and Paleozoogeographic Significance

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 1-9页

作者： sun Boyang Key Laboratory of Vertebrate Evolution and Human Origins of the Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China

The Linxia Basin is characterized by an abundance of Cenozoic sediments,that contain exceptionally rich fossil *** are abundant in the Linxia Basin,the fossil record of equids in this region including 16 species that represent 10 *** comparison to other classic late Cenozoic areas in China,the Linxia Basin stands out,because the fauna and chronological data accompanying Linxia equids render them remarkably useful for *** anchitheriines in the region,such as Anchitherium and Sinohippus,represent early equids that appeared in the late stages of the middle and late Miocene,*** the equines,most species of Chinese hipparions have been identified in the Linxia Basin and some species of the genera Hipparion and Hippotherium have FAD records for ***,Equus eisenmannae is one of the earliest known species of Equus in the Old World and is well-represented at the Longdan *** species with precise geohistorical distributions can serve as standards for high-resolution chronological units within this *** at the eastern margin of the Tibetan Plateau and subject to considerable uplift,the Linxia Basin has served as a biogeographic transition area for equids throughout the late Cenozoic.

关键词： Equidae Cenozoic biostratigraphy paleozoogeography Linxia Basin