检索结果-南通市图书馆

Nonlocal Effects of Low-Energy Excitations in Quantum-Spin-Liquid Candidate Cu_(3)Zn(OH)_(6)FBr

Chinese Physics Letters 2021年第9期38卷 96-100页

作者： Yuan Wei Xiaoyan Ma Zili Feng Yongchao Zhang Lu Zhang Huaixin Yang Yang Qi Zi Yang Meng Yan-Cheng Wang Youguo Shi Shiliang Li Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute for Solid State Physics University of TokyoKashiwa 277-8581Japan Yangtze River Delta Physics Research Center Co. Ltd.Liyang 213300China State Key Laboratory of Surface Physics Department of PhysicsFudan UniversityShanghai 200433China Department of Physics and HKU-UCAS Joint Institute of Theoretical and Computational Physics The University of Hong KongPokfulam RoadHong KongChina School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China Songshan Lake Materials Laboratory Dongguan 523808China

We systematically study the low-temperature specific heats for the two-dimensional kagome antiferromagnet,Cu_(3)Zn(OH)_(6)*** specific heat exhibits a T1.7 dependence at low temperatures and a shoulder-like feature above *** construct a microscopic lattice model of Z_(2) quantum spin liquid and perform large-scale quantum Monte Carlo simulations to show that the above behaviors come from the contributions from gapped anyons and magnetic ***,we find the entropy associated with the shoulder decreases quickly with grain size d,although the system is paramagnetic to the lowest *** this can be simply explained by a core-shell picture in that the contribution from the interior state disappears near the surface,the 5.9-nm shell width precludes any trivial *** a large length scale signifies the coherence length of the nonlocality of the quantum entangled excitations in quantum spin liquid candidate,similar to Pippard’s coherence length in *** approach therefore offers a new experimental probe of the intangible quantum state of matter with topological order.

关键词： temperature quantum trivial

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

癌睾丸抗原在乳腺癌中的研究进展

引用

转化医学电子杂志 2017年第2期4卷 1-4页

作者：徐碧荷薛昀陈晓芹肖蓉心李彬隋锡朝丁玲昱焦运燊阴凯麟李欢欢高子蕊陈曦郭丽凯王倩倩冯金秋王月丹初明无北京大学医学部基础医学院北京100191 卫生部医学免疫学重点实验室北京100191 重庆涪陵中心医院重庆408000 首都医科大学燕京医学院北京101300 北京大学人民医院北京100044

癌睾丸抗原(CTA)是一类特异性较高的肿瘤抗原,只在多种恶性肿瘤和睾丸表达.CTA能作为靶点,诱导吞噬性T细胞介导的CTL免疫反应,而正常含有CTA的睾丸细胞中因缺少MHCⅠ类分子而避免免疫系统的攻击.乳腺癌是女性最常见的恶性肿瘤之一,并在... 详细信息

癌睾丸抗原(CTA)是一类特异性较高的肿瘤抗原,只在多种恶性肿瘤和睾丸表达.CTA能作为靶点,诱导吞噬性T细胞介导的CTL免疫反应,而正常含有CTA的睾丸细胞中因缺少MHCⅠ类分子而避免免疫系统的攻击.乳腺癌是女性最常见的恶性肿瘤之一,并在引起死亡的疾病中位居前列.乳腺癌中存在的CTA对乳腺癌治疗方法的发展有着重大的意义.本文围绕乳腺癌中CTA的表达,CTA的功能以及对于乳腺癌治疗的价值作此综述.

关键词：癌睾丸抗原乳腺癌靶点凋亡免疫应答

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

马利兰+氟达拉滨预处理异基因造血干细胞移植治疗白血病的临床研究

引用

现代肿瘤医学 2014年第6期22卷 1430-1434页

作者：赵万红曹莲张王刚曹星梅陈银霞何爱丽刘捷马肖容王剑利杨云王芳侠张鹏宇王瑾古流芳张亦琳西安交通大学医学院第二附属医院血液内科陕西西安710004

目的:探讨马利兰+氟达拉滨(Bu/Flu)预处理方案异基因造血干细胞移植治疗白血病的临床疗效。方法:30例患者中,急性淋巴细胞白血病(ALL)12例,急性髓系白血病(AML)12例,其中1例为MDS转化,慢性粒细胞白血病(CML)6例;其中急性白血病未缓解或... 详细信息

目的:探讨马利兰+氟达拉滨(Bu/Flu)预处理方案异基因造血干细胞移植治疗白血病的临床疗效。方法:30例患者中,急性淋巴细胞白血病(ALL)12例,急性髓系白血病(AML)12例,其中1例为MDS转化,慢性粒细胞白血病(CML)6例;其中急性白血病未缓解或复发状态下移植6例,CML加速期患者1例。供者干细胞为G-CSF动员后采集的HLA配型全相合或一个位点不合的同胞(21例)或非血缘(9例)外周血造血干细胞,有1例成人ALL患者接受HLA配型相合的双份脐带血移植。预处理方案包括:注射用马利兰3.2mg/(kg·d)×3-4d,氟达拉滨30mg/(m2·d)×4-6d,同胞不全相合和非血缘移植患者加用兔抗人胸腺细胞免疫球蛋白(ATG)2.5mg/(kg·d)×3d。输注外周血单个核细胞数7.73(0.36-16.0)×108/kg,CD34+造血干细胞数3.26(0.77-17.6)×106/kg。用环孢素+短疗程甲氨喋呤或环孢素+吗替麦考酚酯预防移植物抗宿主病(GVHD)。采用DNA短串联重复序列多态性(STR)分析方法鉴定供者干细胞植入情况。结果:29例患者重建造血,检测外周血白细胞STR-DNA证实均为100%完全供者植入,1例非血缘全相合患者未植入于短期内死亡外,其余患者为完全供者型,植入率为96.7%。血缘相关HSCT和非血缘相关HSCT白细胞植活的中位时间分别为11(8-17)d和13(9-15)d;血小板植活的中位时间分别为13(7-22)d和14(8-25)d。出现急性GVHD 14例,占46.7%,其中I-II度10例(33.3%),III-IV度者4例(13.3%);6例发生慢性局限性GVHD,发生率为20.0%。随访1-66个月(中位时间20个月),总体生存率(OS)为63.3%,无事件生存率(DFS)为51.7%。结论:Bu/Flu预处理方案移植治疗白血病相关并发症轻,有很好耐受性和较好疗效,是值得推广应用的预处理方案。

关键词：异基因造血干细胞移植白血病预处理氟达拉滨

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Raman scattering study of magnetic layered MPS_3 crystals(M = Mn, Fe, Ni)

引用

Chinese Physics B 2019年第5期28卷 226-231页

作者： Yi-Meng Wang Jian-Feng Zhang Cheng-He Li Xiao-Li Ma Jian-Ting Ji Feng Jin He-Chang Lei Kai Liu Wei-Lu Zhang Qing-Ming Zhang Department of Physics Renmin University of China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Department of Engineering and Applied Sciences Sophia University School of Physical Science and Technology Lanzhou University

We report a comprehensive Raman scattering study on layered MPS_3(M = Mn, Fe, Ni), a two-dimensional magnetic compound with weak van der Waals interlayer coupling. The observed Raman phonon modes have been well assigned by the combination of first-principles calculations and the polarization-resolved spectra. Careful symmetry analysis on the angle-dependent spectra demonstrates that the crystal symmetry is strictly described by C_(2h)but can be simplified to D_(3d) with good accuracy. Interestingly, the three compounds share exactly the same lattice structure but show distinct magnetic structures. This provides us with a unique opportunity to study the effect of different magnetic orders on lattice dynamics in MPS_3. Our results reveal that the in-plane Nel antiferromagnetic(AF) order in MnPS_3 favors a spin–phonon coupling compared to the in-plane zig-zag AF in NiPS_3 and FePS_3. We have discussed the mechanism in terms of the folding of magnetic Brillouin zones. Our results provide insights into the relation between lattice dynamics and magnetism in the layered MPX_3(M = transition metal, X = S, Se) family and shed light on the magnetism of monolayer MPX_3 materials.

关键词： Raman scattering two-dimensional magnetic van der Waals materials lattice dynamics magnetism

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

女性肺癌320例临床资料分析

引用

四川肿瘤防治 2000年第4期13卷 220-202页

作者：吴万梅钱红霞余春兰肖蓉白洪芳王霞张祖蓉四川省肿瘤医院成都610041 德阳市第五人民医院德阳618000

目的 :探讨女性肺癌临床症状、病理类型特点及其与预后的关系。方法 :收集1988～1998年320例女性肺癌患者资料进行回顾性分析。结果 :女性肺癌中病理类型分别为腺癌48.3 % ,鳞癌16.6% ,小细胞肺癌9.1%。20.1%病人以肺外症状就诊 ,84.5 ... 详细信息

目的 :探讨女性肺癌临床症状、病理类型特点及其与预后的关系。方法 :收集1988～1998年320例女性肺癌患者资料进行回顾性分析。结果 :女性肺癌中病理类型分别为腺癌48.3 % ,鳞癌16.6% ,小细胞肺癌9.1%。20.1%病人以肺外症状就诊 ,84.5 %的非小细胞肺癌诊断时即为Ⅲ～Ⅳ期。全部病人的5年生存率为5% ,采用包括手术切除在内综合治疗手段病人的5年生存率为14.5 %。结论 :女性肺癌以肺癌转移部位症状为首发症状者 ,易误诊 ;临床资料显示病理类型与预后关系不大。

关键词：肺癌女性生存率预后因素

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Magnetic Phase Diagram of Cu4-xZnx(OH)6FBr Studied by Neutron-Diffraction and μSR Techniques

引用

Chinese Physics Letters 2020年第10期37卷 98-102页

作者： Yuan Wei Xiaoyan Ma Zili Feng Devashibhai Adroja Adrian Hillier Pabitra Biswas Anatoliy Senyshyn Andreas Hoser Jia-Wei Mei Zi Yang Meng Huiqian Luo Youguo Shi Shiliang Li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Institute for Solid State Physics University of TokyoKashiwa 277-8581Japan ISIS Facility Rutherford Appleton LaboratoryChiltonDidcot Oxon OX110QXUnited Kingdom Highly Correlated Matter Research Group Physics DepartmentUniversity of JohannesburgPO Box 524Auckland Park 2006South Africa Heinz Maier-Leibnitz Zentrum(MLZ) Technische Universität MünchenGarching D-85747Germany Helmholtz-Zentrum Berlin für Materialien und Energie D-14109 BerlinGermany Shenzhen Institute for Quantum Science and Engineering and Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China Department of Physics and HKU-UCAS Joint Institute of Theoretical and Computational Physics The University of Hong KongPokfulam RoadHong KongChina Songshan Lake Materials Laboratory Dongguan 523808China

We systematically investigate the magnetic properties of Cu4-xZnx(OH)6FBr using the neutron diffraction and muon spin rotation and relaxation(μSR) ***-diffraction measurements suggest that the longrange magnetic order and the orthorhombic nuclear structure in the x=0 sample can persist up to x=0.23 and 0.43,*** temperature dependence of the zero-field μSR spectra provides two characteristic temperatures,TA0 and Tλ,which are associated with the initial drop close to zero time and the long-time exponential decay of the muon relaxation,*** between TA0 and TM from previously reported magnetic-susceptibility measurements suggest that the former comes from the short-range interlayer-spin clusters that persist up to x=*** the other hand,the doping level where Tλ becomes zero is about 0.66,which is much higher than threshold of the long-range order,i.e.,~*** results suggest that the change in the nuclear structure may alter the spin dynamics of the kagome layers and a gapped quantum-spin-liquid state may exist above x=0.66 with the perfect kagome planes.

关键词： relaxation rotation exponential

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In-Plane Anisotropic Response to Uniaxial Pressure in the Hidden Order State of URu_(2)Si_(2)

引用

Chinese Physics Letters 2022年第10期39卷 34-38页

作者： Xingyu Wang Dongliang Gong Bo Liu Xiaoyan Ma Jinyu Zhao Pengyu Wang Yutao Sheng Jing Guo Liling Sun Wen Zhang Xinchun Lai Shiyong Tan Yi-feng Yang Shiliang Li Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China State Key Laboratory of Environment-friendly Energy Materials Southwest University of Science and TechnologyMianyang 621010China Science and Technology on Surface Physics and Chemistry Laboratory Mianyang 621908China

We investigate the uniaxial-pressure dependence of resistivity for URu_(2−x)Fe_(x)Si_(2)samples with x=0 and 0.2,which host a hidden order(HO)and a large-moment antiferromagnetic(LMAFM)phase,*** both samples,the elastoresistivityζshows a seemingly divergent behavior above the transition temperature T_(0)and a quick decrease below *** find that the temperature dependence ofζfor both samples can be well described by assuming the uniaxial pressure effect on the gap or certain energy scale except forζ(110)of the x=0 sample,which exhibits a nonzero residual value at 0 *** show that this provides a qualitative difference between the HO and LMAFM *** results suggest that there is an in-plane anisotropic response to the uniaxial pressure that only exists in the hidden order state without necessarily breaking the rotational lattice symmetry.

关键词： resistivity x=0 qualitative

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：