检索结果-南通市图书馆

Modulatory effect of International standard Scalp Acupuncture on brain activation in the elderly as revealed by resting-state fMRI

引用

Neural Regeneration Research 2019年第12期14卷 2126-2131页

作者： Wai-Yeung Chung Song-Yan Liu jing-Chun Gao yi-jing Jiang jing Zhang Shan-Shan Qu Ji-Ping Zhang Xiao-Long tan Jun-Qi Chen Sheng-Xu Wang School of Traditional Chinese Medicine Southern Medical University Guangzhou Guangdong Province China School of Chinese Medicine The Chinese University of Hong Kong Shatin Hong Kong Special Administrative Region China Department of Neurology China-Japan Union Hospital of Jilin University Changchun Jilin Province China Department of Rehabilitation Medicine Third Affiliated Hospital of Southern Medical University Guangzhou Guangdong Province China Department of Rehabilitation Medicine Rehabilitation Hospital Fujian University of Traditional Chinese Medicine Fuzhou Fujian Province China Department of Medical Image Third Affiliated Hospital of Southern Medical University Guangzhou Guangdong Province China

The specific mechanisms by which acupuncture affects the central nervous system are unclear. In the International Standard Scalp Acupuncture system, acupuncture needles are applied at the middle line of the vertex, anterior parietal-temporal oblique line, and the posterior parietal-temporal oblique line. We conducted a single-arm prospective clinical trial in which seven healthy elderly volunteers (three men and four women;50–70 years old) received International Standard Scalp Acupuncture at MS5 (the mid-sagittal line between Baihui (DU20) and Qianding (DU21)), the left MS6 (line joining Sishencong (EX-HN1) and Xuanli (GB6)), and the left MS7 (line joining DU20 and Qubin (GB7)). After acupuncture, resting-state functional magnetic resonance imaging demonstrated changes in the fractional amplitude of low frequency fluctuations and regional homogeneity in various areas, showing remarkable enhancement of regional homogeneity in the bilateral anterior cingulate, left medial frontal gyrus, supramarginal gyrus, right middle frontal gyrus, and inferior frontal gyrus. Functional connectivity based on a seed region at the right middle frontal gyrus (42, 51, 9) decreased at the bilateral medial superior frontal gyrus. Our data preliminarily indicates that the international standard scalp acupuncture in healthy elderly participants specifcally enhances the correlation between the brain regions involved in cognition and implementation of the brain network regulation system and the surrounding adjacent brain regions. The study was approved by the Ethics Committee of the China-Japan Union Hospital at Jilin University, China, on July 18, 2016 (approval No. 2016ks043).

关键词： nerve regeneration resting-state functional magnetic resonance imaging International Standard Scalp Acupuncture acupoint specificity brain functional connectivity healthy elderly volunteers low frequency fluctuation regional homogeneity functional connectivity neural regeneration

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

稀土硼酸盐双折射材料的电子结构和光学性质的第一性原理研究

引用

原子与分子物理学报 2025年第1期42卷 171-179页

作者：努尔比耶·图尔洪刘鸿涛崔秀花刘静姜轶井群新疆大学物理科学与技术学院乌鲁木齐830017

近年来,稀土(RE)硼酸盐材料因其丰富的结构和优异的光学性质,引起人们广泛关注.使用第一性原理高通量筛选工具获得五个性能优异的短波长稀土硼酸盐材料,并进一步研究了他们的电子结构和光学性质.研究结果表明,这些材料的紫外截止边和双... 详细信息

近年来,稀土(RE)硼酸盐材料因其丰富的结构和优异的光学性质,引起人们广泛关注.使用第一性原理高通量筛选工具获得五个性能优异的短波长稀土硼酸盐材料,并进一步研究了他们的电子结构和光学性质.研究结果表明,这些材料的紫外截止边和双折射率分别为:210 nm,0.0934@1064 nm(LaB_(3)O_(6))、246 nm,0.0880@1064 nm(LaBO_(3))、347 nm,0.0815@1064 nm(LuBO_(3))、272 nm,0.0914@1064 nm(ScBO_(3))、279 nm,0.0920@1064 nm(Sc_(3)B_(5)O_(12)).本文使用投影态密度、实空间原子实切割以及Born有效电荷分析了各原子及离子基团对双折射率的影响机制,结果表明RE-O基团和B-O多面体在决定光学性质方面做出了主要贡献.

关键词：稀土硼酸盐第一性原理双折射率

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Multiple indicators and analytic hierarchy process(AHP)for comprehensive performance evaluation of exhaust hood

引用

Building Simulation 2022年第6期15卷 1097-1110页

作者： jing-jing Zhao Ruo-ning Chen Jia-hua Wang Xue-yi You Tianjin Key Lab of Indoor Air Environmental Quality Control School of Environmental Science and EngineeringTianjin UniversityTianjinChina Ningbo FOTILE Kitchen Ware Co. Ltd.NingboChina

Indicators are the basis for judging the working performance of exhaust hood and capture performance are usually used as the only *** evaluation index system including three factors of cooking oil fumes(COF)instantaneous capture,health risk impact and thermal comfort was proposed to assess the comprehensive performance of exhaust hood in the present *** primary capture efficiency(PCE)of formaldehyde,the PCE of particulate matter with the diameter less than or equal to 2.5μm(PM_(2.5)),the incremental lifetime cancer risk(ILCR)of formaldehyde,the ILCR of PM_(2.5)and the predicted mean vote(PMV),which can all be quantified with the aid of computational fluid dynamics(CFD),were selected as the *** the analytic hierarchy process(AHP)method was introduced to perform the comprehensive performance evaluation of exhaust *** performance of two exhaust hood structures(grille and orifice type)with three exhaust rates(3000,4000,and 5000 m^(3)/h)in two cooking zones of a university canteen kitchen were *** result showed that the reduction of ILCR of COF exposure is the most important to the performance of exhaust *** comprehensive performance of orifice exhaust hood with exhaust rate of 4000 and 5000 m^(3)/h are optimal;the orifice exhaust hood with exhaust of 3000 m^(3)/h and grille exhaust hood with exhaust rate of 5000 m^(3)/h are moderate;the grille exhaust hood with exhaust rate of 3000 and 4000 m^(3)/h are ***-making priorities based on comprehensive and individual performance are not exactly the same in the two cooking *** is necessary to use the index system to evaluate the comprehensive performance of exhaust hood that considers the impact on human health and thermal comfort.

关键词： evaluation index system analytic hierarchy process comprehensive performance exhaust hood computational fluid dynamics

来源：

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

Entanglement of Para-Bose Entangled Coherent States and Probabilistic Teleportation

引用

Communications in Theoretical Physics 2008年第1期49卷 73-76页

作者： QIAN yi XU jing-Bo Zhejiang Institute of Modern Physics and Department of Physics Zhejiang University Hangzhou 310027 China

We study the entanglement of the para-Bose entangled coherent states by adopting the entanglement of formation and propose a scheme of probabilistic teleportation via para-Bose entangled coherent states. It is found that the mean fidelity of the scheme increases with the decrease of the para-Bose parameter ho in the case of non-maximally entangled para-Bose entangled coherent states.

关键词： probabilistic teleportation entanglement para-Bose entangled coherent states

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

Massive Particles' de Sitter Tunneling in (3+1)-Dimensional de Sitter Spacetimes

引用

Communications in Theoretical Physics 2008年第11期50卷 1258-1260页

作者： ZHOU Liang ZHANG jing-yi Center for Astrophysics Guangzhou University Guangzhou 510006 China

In this paper,massive particles' Hawking radiation via tunneling from cosmological horizon of a(3+1)-dimensional de Sitter spacetime is *** to Parikh's theory,when a particle tunnels across the cos-mological horizon,the effective geometry is Schwarzschild-de Sitter *** this effective spacetime,a massiveparticle can be treated as a de Broglie *** method is *** emission spectrum is obtained,and it takesthe same functional form as that of massless particles.

关键词： black hole Hawking radiation quantum theory

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

The Relationship between the Rise Width and the Full Width of γ-ray Burst Pulses and Its Implications

引用

Chinese Journal of Astronomy and Astrophysics 2006年第1期6卷 52-60页

作者： Rui-jing Lu yi-Ping Qin Ting-Feng yi National Astronomical Observatories/Yunnan Observatory Chinese Academy of Sciences Kunming 650011 Department of Physics Guangxi University Nanning Guangxi 530004 Graduate University of Chinese Academy of Sciences Beijing 100049

We investigate the relationship between the rise width and the full width of gamma-ray burst pulses. Theoretical analysis shows that either width is proportional to Г^-2△τθ,FWHMRc/c（Г the Lorentz factor of the bulk motion, △τθ,FWHM a local pulse＇s width, Rc the radius of fireballs and c the velocity of light）. We study the relationship for four samples of observed pulses. We find：（1） merely the curvature effect could reproduce the relationship between the rise and full widths with the same slope as derived from the model of Qin et al.; （2） gamma-ray burst pulses, selected from both the short and long GRBs, follow the same sequence in the rise width vs. full width diagram, with the shorter pulses at one end; （3） all GRBs may intrinsically result from local Gaussian pulses. These features place constraints on the physical mechanism（s） for producing long and short GRBs.

关键词： gamma rays: bursts - gamma rays: theory methods: data analysis

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

The Darboux Transformation for NLS-MB Equations

引用

Communications in Theoretical Physics 2002年第10期38卷 493-496页

作者： HE jing-Song CHENG yi LI yi-Shen Department of Mathematics University of Science and Technology of China Hefei 230026 China Department of Mathematics University of Science and Technology of China Hefei 230026 China Department of Mathematics University of Science and Technology of China Hefei 230026 China

The Darboux transformations for the nonlinear Schrodinger equation and Maxwell-Bloch equations areconstructed. The one-soliton solution and periodic solution are obtained from the different "seeds".

关键词： Darboux transformation, NLS-MB equations, soliton

来源：

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

Development and characterization of mycelium bio-composites by utilization of different agricultural residual byproducts

引用

Journal of Bioresources and Bioproducts 2023年第1期8卷 78-89页

作者： Liucheng Peng jing yi Xinyu Yang jing Xie Chenwei Chen College of Food Science and Technology Shanghai Ocean UniversityShanghai 201306China Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving EvaluationShanghai 201306China National Experimental Teaching Demonstration Center for Food Science and Engineering(Shanghai Ocean University) Shangha 201306China

Mycelium bio-composites was developed by incubating Pleurotus ostreatus fungi on different sub-strates from agricultural residual byproducts,including rice straw,bagasse,coir-pith,sawdust,and corn *** scanning electron microscope(SEM)results showed that the hypha of com-posite derived from bagasse was the densest,and the diameter of hypha was the biggest(0.77μm),which was presumably due to the existence of cellulose in bagasse in the form of dextran and *** maximum and minimum compression strength for sawdust substrate and corn straw substrate were 456.70 and 270.31 kPa,*** flexural strength for bagasse sub-strate and rice straw substrate were 0.54 and 0.16 MPa,*** two composites derived from rice straw and bagasse exhibited higher hydrophobic properties than *** comparison,mycelium bio-composite derived from bagasse showed the best comprehensive *** for a little worse anti-creep ability and waterproof performance,other properties of mycelium bio-composites could be comparable to commercially expanded polystyrene(EPS)packaging *** from this study,mycelium material provided a good way to use agricultural residual byproducts and could be a good alternative to non-biodegradable materials for packaging appli-cations.

关键词： Mycelium Mycelium bio-composites Pleurotus ostreatus fungi Agricultural residual byproducts Mechanical property

来源：

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

Extensive carbon cycle between peatland and vegetation:Insights from high net primary productivity of the Middle Jurassic in northwestern China

引用

Journal of Palaeogeography 2024年第4期13卷 1016-1028页

作者： Yang-Yang Huang Hao Liang Long-yi Shao Bin Yang Baruch Spiro Jia-Min Zhou jing Lu tan-Guang Fan State Key Laboratory for Fine Exploration and Inteligent Development of Coal Resources Bejing 100083China College of Geoscience and Surveying Engineering China University of Mining and Technology(Bejing)Bejing 100083China Research Institute of Exploration&Development PetroChina Tuha Oilfield CompanyHami 839009China Exploration Company PetroChina Tuha Oilfield CompanyHami 839009China Department of Earth Sciences Natural History MuseumLondon SW75BDUK School of Marine Sciences University of Haifa Mount Carmel HaifaIsrael

Peatlands have obvious carbon storage capacity and are crucial in mitigating global climate *** the end-product of peatlands,coals have preserved a large amount of palaeoenvironmental *** carbon accumulation rate and the net primary productivity(NPP)of coal-forming peatlands can be used as proxies for recovering palaeoenvironments.A super-thick coal seam(42°35'N,91°25'E)was developed in the Middle Jurassic Xishanyao Formation in the Shaerhu coalfield in the southern margin of the Tuha(Turpan-Hami)Basin,northwestern *** this study,we use the time series analysis to identify the periods of Milankovitch orbital cycles in the Gamma-ray curve of this super-thick(124.85 m)coal and then use the obtained cycle periods of 405 ka,173 ka,44 ka,37.6 ka,22.5 ka to calculate the timeframe of the coalforming peatlands which ranges from 2703.44 to 2975.11 *** that the carbon content of the coal seam is 78.32%and the carbon loss during the coalification is about 25.80%,the carbon accumulation rate of the targeted coal seam is estimated to be 58.47-64.34 g C/m^(2)·a,and the NPP is estimated to be252.28-277.63 g C/m^(2)·*** main palaeoenvironmental factors controlling the NPP of peatlands are CO_(2)content,palaeolatitude and *** reduced NPP values of the palaeo-peatlands in the Shaerhu coalfield can be attributed to the mid-palaeolatitude and/or too low atmospheric CO_(2)*** a certain extent,the NPP of palaeo-peatlands reflects the changes in atmospheric CO_(2),which can further reveal the dynamic response of the global carbon cycle to climate ***,predicting the level of NPP in the Middle Jurassic and studying the final destination of carbon in the ecosystem are beneficial to understanding the coal-forming process and palaeoenvironment.

关键词： Xishanyao Formation Super-thick coal Milankovitch cycle Carbon accumulation rate Carbon cycle

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

Trees with Non-regular Fractal Boundary

引用

Acta Mathematica Sinica,English Series 2008年第8期24卷 1345-1350页

作者： jing Hu YU yi Ming DING Department of Mathematics School of Sciences Wuhan University of Technology Wuhan 430070 P. R. China Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan 430071 P. R. China

For any given 0 〈α 〈 β 〈 ∞, we construct a tree such that under tree metric, the Hausdorff dimension of the corresponding boundary is α, but both the Packing dimension and the boxing dimension are β. Applying the connection between tree and iterated functions system, non- regular fractal sets on real line are constructed. Moreover, the method adopted in our paper is different from those which have been used before for constructing non-regular fractal set in general metric space.

关键词： tree boundary fractal dimensions non-regularity recursive structures

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

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

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：