检索结果-南通市图书馆

A novel power-on-reset circuit for passive UHF RFID tag chip

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2018年第12期39卷 173-179页

作者： Ang Wang Lina Yu Dehua Wu Shibo Fu Wanlin ga Wan'ang Xiao Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China College of Information and Electrical Engineering China Agricultural UniversityBeijing 100083China School of Microelectronics University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Agricultural Informationization Standardization Ministry of Agriculture and Rural AffairsBeijing 100083China

A novel power-on-reset(POR) circuit with simple architecture, small values of capacitances, ultralower power consumption, and self-adjustable delay time of reset pulse for passive UHF RFID tags is presented in this paper. A proposed delay element was adopted for the features of small capacitances and wide power supply rise time range. An inverter was used as a two-inputs logic device to simplify the architecture of the circuit. The technology used for design and simulation is SMIC 0.18 μm RF. Simulation results show that the circuit functions well under different process corners with different power supply rise time, and is able to generate a POR signal after the power supply is briefly powered off. The static power consumption is less than 30 pa. Moreover, the circuit operates properly along with other modules of analog front-end.

关键词： RFID analog circuit power-on-reset ultra-lower power delay element

Electric Anisotropy and Two－dimensional Energy Band of Undoped and Heavily Doped Polyacetylene

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1995年第3期11卷 228-231页

作者： Huang, Zong-hao Wang, Xiu-jun Tong, La-ga Li, Bai-tao Wang, Rong-shun Bei, Yong-ping

ased on the known crystal data , we used the EHMACC(EHMO/CO) methodto calculate the twotlimensional energy band of both undoped and heavily iodine-doped polyacetylene (pa). The results show that (1 ) I-doping obviously reducesthe niagnitudes of Eg , Egi; (2) in the conducting process along the direction per-pendicular to pa chain , the P-type AO of iodine plays a very important role, i- e. ,the conducting bridge to transport the charge between the two neighbor pa chains.I-doping reniarkably increases σ_T value while the conducting process will reduce theratio magnitude of σ/σ. Therefore, heavily I-doping makes pa change fromsimeconductor to conductor which obviously has 2-D conductive ability.

关键词： Conductive polymer 2-D energy band Electric anisotropy

Scaleable Optical Label Generation and Switching for packet Routing in DWDM Networks

在线全文

学校读者我要写书评

暂无评论

Scaleable Optical Label Generation and Switching for Packet ...

Novel data-driven subtypes and stages of brain atrophy in the ALS-FTD spectrum

Asia-pacific Optical Communications 2004

作者： gee-Kung Chang Joseph L.Long School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA 30332-0250 School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA 30332-0250

We have experimentally demonstrated some key techniques in label switching optical networks. These techniques include optical label generation, optical label swapping and preamble free clock recovery.

关键词： Optical packet switching optical label switching optical payload optical carrier suppression cross- phase modulation optical filtering all-optical networks.

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Translational Neurodegeneration 2023年第1期12卷 50-69页

作者： Ting Shen Jacob W.Vogel Jeffrey Duda Jeffrey S.Phillips Philip ACook James gee Lauren Elman Colin Quinn Defne A.Amado Michael Baer Lauren Massimo Murray Grossman David J.Irwin Corey T.McMillan Penn Frontotemporal Degeneration Center Department of NeurologyPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA Department of Clinical Sciences SciLifeLabLund University22242 LundSweden Penn Image Computing and Science Lab(PICSL) Department of RadiologyPerelman School of MedicineUniversity of Penn-sylvaniaPhiladelphiaPA 19104USA Department of Neurology Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA Digital Neuropathology Laboratory Department of NeurologyPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA.

Background TDP-43 proteinopathies represent a spectrum of neurological disorders,anchored clinically on either end by amyotrophic lateral sclerosis(ALS)and frontotemporal degeneration(FTD).The ALS-FTD spectrum exhibits a diverse range of clinical presentations with overlapping phenotypes,highlighting its *** study was aimed to use disease progression modeling to identify novel data-driven spatial and temporal subtypes of brain atrophy and its progression in the ALS-FTD *** We used a data-driven procedure to identify 13 anatomic clusters of brain volume for 57 behavioral variant FTD(bvFTD;with either autopsy-confirmed TDP-43 or TDP-43 proteinopathy-associated genetic variants),103 ALS,and 47 ALS-FTD patients with likely TDP-43.A Subtype and Stage Inference(SuStaIn)model was trained to identify subtypes of individuals along the ALS-FTD spectrum with distinct brain atrophy patterns,and we related subtypes and stages to clinical,genetic,and neuropathological features of *** SuStaIn identified three novel subtypes:two disease subtypes with predominant brain atrophy in either prefrontal/somatomotor regions or limbic-related regions,and a normal-appearing group without obvious brain *** limbic-predominant subtype tended to present with more impaired cognition,higher frequencies of pathogenic variants in TBK1 and TARDBP genes,and a higher proportion of TDP-43 types B,E and *** contrast,the prefrontal/somatomotor-predominant subtype had higher frequencies of pathogenic variants in C9orf72 and GRN genes and higher proportion of TDP-43 type *** normal-appearing brain group showed higher frequency of ALS relative to ALS-FTD and bvFTD patients,higher cognitive capacity,higher proportion of lower motor neuron onset,milder motor symptoms,and lower frequencies of genetic pathogenic *** overall SuStaIn stages also correlated with evidence for clinical progression including longer disease duration,higher King’s stage,and cog

关键词： Amyotrophic lateral sclerosis Frontotemporal degeneration Disease heterogeneity SuStaIn model

Article Navigation Syntelin inhibits triple-negative breast cancer cell proliferation and metastasis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Molecular Cell Biology 2021年第11期13卷 834-837页

作者： McKay Mullen Fengrui Yang Jun Cao Yang Cao Xu Liu gee Young Lee Tao Li William Yao Zhihong Yang Jiahai Zhang Kela Johnson Felix Aikhionbare Yong Chen Xinjiao gao Dongmei Wang Xia Ding Hadiyah-Nicole Green Xing Liu Xuebiao Yao MOE Key Laboratory for Cellular Dynamics Anhui Key Laboratory for Chemical BiologyCAS Center for Excellence in Molecular Cell ScienceUniversity of Science and Technology of ChinaHefei 230027China Keck Center for Oganoids Plasticity Morehouse School of MedicineAtlantaGA 30310USA Department of Hepatobiliary Surgery Xijing HospitalXi’an 710032China BUCM-USTC Collaborative Center for parietal Cell Research Beijing University of Chinese MedicineBeijing 100029China Ora Lee Smith Cancer Research Foundation AtlantaGA 30310USA

Dear Editor,The hallmarks of cancer comprise several distinct biological characteristics acquired during the multistep development of human tumors with the unique feature of genomic instability(Shen,2011).These cancer characteristics include sustaining proliferative signaling,evading growth suppressors,resisting cell death,enabling replicative immortality,inducing angiogenesis,and activating invasion and metastasis(Chen et al.,2011;Song et al.,2018).Triple-negative breast cancer(TNBC),an aggressive disease with increased risks for visceral metastases,has a poor prognosis due to unavailable and viable therapeutic targets(Bianchini et al.,2016).A TNBC diagnosis indicates that cancer cells test negative for three key receptors:estrogen receptor,progesterone receptor,and human epidermal growth factor receptor 2(Bianchini et al.,2016).The absence of these three receptors renders existing hormone and targeted therapies ineffective.

关键词： metastasis breast

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

《藏医药史纲》的文献价值探讨

西藏大学学报（藏文版） 2022年第1期 121-133,191,192页

作者：央嘎西藏藏医药大学

《藏医药史纲》是由若氏家族后裔聂朵贡嘎顿珠大师(1268-1328)所著,是现存最早的藏医药历史著作,成书约13世纪末至14世纪初。该书的问世对后期藏医药及其史籍的编撰产生了巨大影响。文章围绕《藏医药史纲》的作者、主要内容、成书年代... 详细信息

《藏医药史纲》是由若氏家族后裔聂朵贡嘎顿珠大师(1268-1328)所著,是现存最早的藏医药历史著作,成书约13世纪末至14世纪初。该书的问世对后期藏医药及其史籍的编撰产生了巨大影响。文章围绕《藏医药史纲》的作者、主要内容、成书年代的研究,重点探讨了该书的后期影响。

关键词：《藏医药史纲》《四部医典》聂朵·贡嘎顿珠

藏药四味黄芪散通过AMPK蛋白诱导的自噬信号通路干预低氧性肺动脉高压的研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国药理学通报 2023年第1期39卷 178-184页

作者：李生花杨全余嘎琴靳国恩青海大学医学院青海省高原医学应用基础重点实验室(青海-犹他高原医学联合重点实验室) 教育部高原医学重点实验室青海西宁810001

目的探讨藏药四味黄芪散(SW)降低低氧性肺动脉高压的作用机制。方法将110只SD大鼠随机分为常氧组、低氧对照组和低氧药物组,两低氧组根据暴露低氧时间又各分为d 1、3、7、15、30组,共10个小组。常氧组置于海拔2260 m的大气环境,不予干预... 详细信息

目的探讨藏药四味黄芪散(SW)降低低氧性肺动脉高压的作用机制。方法将110只SD大鼠随机分为常氧组、低氧对照组和低氧药物组,两低氧组根据暴露低氧时间又各分为d 1、3、7、15、30组,共10个小组。常氧组置于海拔2260 m的大气环境,不予干预;低氧10个组置于模拟海拔5000 m的低压氧舱,低氧药物组给予SW混悬液(0.42 g/100 g)灌胃,低氧对照组给予生理盐水灌胃,每天1次。每组大鼠于相应时间点测定Ppa、RV/(LV+S);Western blot法测定肺组织p-AMPK、ULK-1、LC3Ⅰ/LC3Ⅱ蛋白水平。结果与常氧组相比,低氧对照组大鼠Ppa、RV/(LV+S)比值随暴露低氧时间的延长逐渐增高,并与肺动脉平滑肌层厚度和肺组织亚细胞器变化保持一致。肺组织p-AMPK蛋白表达水平也轻度上调(Ppa升高幅度和肺动脉平滑肌层增厚程度明显减缓(P<0.05~0.01),而肺组织中p-AMPK、ULK-1、LC3Ⅱ蛋白表达水平随暴露低氧时间的延长而进一步增高(P<0.05~0.001),尤以慢性低氧为甚。结论SW可通过上调AMPK自噬信号通路发挥抑制低氧性肺动脉高压的作用。

关键词：藏药四味黄芪散干预 AMPK 自噬信号通路低氧肺动脉高压

同方期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

帕雄热巴的描绘与解释

西藏艺术研究 2018年第4期 44-50页

作者：尼玛卓嘎西藏大学艺术学院舞蹈系

在藏族艺术的发展进程中,热巴以戏剧形态呈现,它是一门融说、唱、跳、杂技、气功、短剧为一体的综合性表演艺术。作为藏族民间歌舞的名片,以浓郁的特点、精湛的技艺博得大众的喜爱。作为鲜明的艺术形式,各地热巴都形成了其独特的风格。... 详细信息

在藏族艺术的发展进程中,热巴以戏剧形态呈现,它是一门融说、唱、跳、杂技、气功、短剧为一体的综合性表演艺术。作为藏族民间歌舞的名片,以浓郁的特点、精湛的技艺博得大众的喜爱。作为鲜明的艺术形式,各地热巴都形成了其独特的风格。其中林芝市波密县民间祭祀性舞蹈"帕雄"热巴,不以叙述性和表演性为主,而强调的是宗教仪式色彩。本文通过对当地艺人的田野调查对民间祭祀性舞蹈"帕雄"热巴进行考辨,展示其热巴艺术的渊源、节目程式,并对传承发展做个人思考,为学术和实践提供参考。

关键词：帕雄热巴祭祀性描绘与解释

在线全文

学校读者我要写书评

暂无评论

基于物理指标的全叶卷雪茄烟吸阻控制方法

烟草科技 2019年第3期52卷 92-96页

作者：常月勇仕小伟陈平赵嘎山东中烟工业有限责任公司济南卷烟厂

为了确立基于物理指标的全叶卷雪茄烟吸阻控制方法,采用了单因子试验分析方法,分别分析了吸阻与烟支单支质量、圆周、长度和含水率的关系;采用三次曲面拟合方法,确立了吸阻与单支质量和圆周的函数关系。结果表明:①根据相关系数矩阵计... 详细信息

为了确立基于物理指标的全叶卷雪茄烟吸阻控制方法,采用了单因子试验分析方法,分别分析了吸阻与烟支单支质量、圆周、长度和含水率的关系;采用三次曲面拟合方法,确立了吸阻与单支质量和圆周的函数关系。结果表明:①根据相关系数矩阵计算得到了吸阻与烟支单支质量、圆周、长度、含水率和密度的相关系数分别为0.760 3、-0.492 9、0.020 6、0.055 4和0.897 1,说明在允差范围内单支质量和圆周是影响吸阻的显著指标。②三次曲面拟合模型的平均误差为31.417 6 pa,最大误差为69.802 8 pa,最小误差为3.777 5 pa。

关键词：雪茄烟吸阻物理指标统计分析