检索结果-南通市图书馆

Research in Astronomy and Astrophysics 2018年第2期18卷 125-134页

作者： Xiao-Yu Lai yun-Wei Yu en-Ping Zhou yun-Yang Li Ren-Xin Xu School of Physics and Mechanical & Electrical engineering Hubei University of Education Xinjiang Astronomical Observatory Chinese Academy of Sciences Institute of Astrophysics Central China Normal University School of Physics Peking University Kavli Institute for Astronomy and Astrophysics Peking University

The state of supranuclear matter in compact stars remains puzzling, and it is argued that pul- sars could be strangeon stars. What would happen if binary strangeon stars merge？ This kind of merger could result in the formation of a hyper-massive strangeon star, accompanied by bursts of gravitational waves and electromagnetic radiation （and even a strangeon kilonova explained in the paper）. The tidal polarizability of binary strangeon stars is different from that of binary neutron stars, because a strangeon star is self-bound on the surface by the fundamental strong force while a neutron star by the gravity, and their equations of state are different. Our calculation shows that the tidal polarizability of merging bi- nary strangeon stars is favored by GW170817. Three kinds of kilonovae （i.e., of neutron, quark and strangeon） are discussed, and the light curve of the kilonova AT 2017gfo following GW170817 could be explained by considering the decaying strangeon nuggets and remnant star spin-down. Additionally, the energy ejected to the fireball around the nascent remnant strangeon star, being manifested as a gamma-ray burst, is calculated. It is found that, after a prompt burst, an X-ray plateau could follow in a timescale of 102 - 103 s. Certainly, the results could be tested also by further observational synergies between gravitational wave detectors （e.g., Advanced LIGO） and X-ray telescopes （e.g., the Chinese HXMT satellite and eXTP mission）, and especially if the detected gravitational wave form is checked by peculiar equations of state provided by the numerical relativistical simulation.

关键词： stars: neutron -- pulsars: general -- X-rays: stars -- gravitational waves

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

Constraints on brane inflation after Planck 2015: Impacts of the latest local measurement of the Hubble constant

引用

Science China(Physics,Mechanics & Astronomy) 2019年第3期62卷 41-48页

作者： Rui-yun Guo Lei Zhang Jing-fei Zhang Xin Zhang Department of Physics College of Sciences Northeastern University Center for High energy Physics Peking University

We investigate the observational constraints on three typical brane inflation models by considering the latest local measurement of the Hubble constant in the global fit. We also employ other observational data, including the Planck 2015 CMB data, the BICEP2/Keck Array B-mode data, and the baryon acoustic oscillations data, in our analysis. Previous studies have shown that the addition of the latest local H_0 measurement favors a larger spectral index, and can exert a significant influence on the model selection of inflation. In this work, we investigate its impacts on the status of brane inflation models. We find that, when the direct H_0 measurement is considered, the prototype model of brane inflation is still in good agreement with the current observational data within the 2σ level range. For the KKLMMT model, the consideration of the H_0 measurement allows the range of the parameter β to be amplified to O(10^(-2)), which slightly alleviates the fine-tuning problem. For the IR DBI model, the addition of the H_0 measurement does not provide a better fit. These results show that the consideration of the new H_0 prior can exert a considerable influence on the brane inflation models. At last, we show that, when β≤1.1, the equilateral non-Gaussianity in the IR DBI inflation model is compatible with the current CMB data at the 1σ level.

关键词： brane inflation inflationary cosmology observational constraints

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

Polydopamine/Imogolite Nanotubes(PDA/INTs)Interlayer Modulated Thin Film Composite Forward Osmosis Membrane for Minimizing Internal Concentration Polarization

引用

Chinese Journal of Polymer Science 2022年第10期40卷 1233-1241,I0010页

作者： Jian-Chen Han Shao-fei Wang Ran Deng Qing-yun Wu School of Chemical engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Faculty of Materials Science and Chemical engineering Ningbo UniversityNingbo 31521China

Forward osmosis(FO)as an energy-saving membrane process has attracted much attention in food concentration,water treatment,and *** film composite(TFC)membrane is the most popular FO membrane,but it suffers from the internal concentration polarization(ICP),which significantly limits the water flux and FO *** this report,we demonstrate a novel and high-performing thin film nanocomposite(TFN)membrane that employs a hydrophilic interlayer composed of imogolite nanotubes(INTs)and polydopamine(PDA).The INTs can be adhered to the porous substrate by the self-polymerization of PDA,and the as-prepared PDA/INTs interlayer displays a nanostructured network with outstanding *** detailed investigation was conducted to understand the relationship between the structure and property of the PDA/INTs interlayer and the morphology and performance of the TFN *** TFN membrane with the PDA/INTs interlayer performs a thinner and smoother polyamide selective ***,the TFN membrane shows a water flux of 18.38 L·m^(-2)·h^(-1),which is 2.18 times of the pristine TFC ***,the TFN membrane has a minimized structural parameter(577μm),almost a half of that of the pristine one(949μm).It reveals that the ICP effect of TFC membrane can be effectively alleviated by using a hydrophilic PDA/INTs *** TFN membrane with a satisfactory water permeability is promising in terms of future applications.

关键词： Interlayer Forward osmosis Internal concentration polarization Nanotube Thin film composite membrane

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

Kinematics of Non-axially Positioned Vesicles through a Pore

引用

Chinese Journal of Polymer Science 2020年第7期38卷 776-783,I0008页

作者： yun-Long Han Ming-Ming Ding Rui Li Tong-fei Shi School of Materials Science and engineering Changchun University of Science and TechnologyChangchun 130022China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and engineering University of Science and Technology of ChinaHefei 230026China

We employ finite element method to investigate the kinematics of non-axially positioned vesicles through a *** complete the coupling between fluid flow and the vesicle membranes,we use the fluid structure interactions with the arbitrary Lagrangian Eulerian *** results demonstrate that the vesicles show different deformations in migration process,in turn an oblique ellipse-shape,slipper-shape,*** find that the rotation angle of non-axially positioned vesicles mainly shows the trend of increase,besides the small fluctuation induced by deformation ***,when the vesicles move towards the axis of the channel,the rotation angle exhibits a decrease because of the decrease of the shear ***,rotation of axially positioned vesicles hardly occur due to symmetrical shear *** results further indicate that the rotation is faster nearby the pore for non-axially positioned *** work answers the mapping between the positions of vesicles and deformed states,as well as the change of rotation angle and rotation velocity,which can provide helpful information on the utilization of vesicles in pharmaceutical,chemical,and physiological processes.

关键词： Vesicles Narrow pore Rotation angle Rotation velocity

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

Phase Patterning of Poly(oxime-ester)for Information encryption by Photo-induced Isomerization

引用

Chinese Journal of Polymer Science 2024年第10期42卷 1488-1494,I0010页

作者： Yu-Fan Yang yun Bai Yi-Bao Li Chang-fei He School of Chemistry and Chemical engineering Gannan Normal UniversityGanzhou341000China

Crystal polymers or liquid crystal elastomers undergo a phase transition that results in a change in the corresponding optical properties,which has the potential to be applied in areas such as information encryption and *** utilization of these materials for patterning purposes requires different phase transition ***,once prepared,altering the phase transition temperature of them presents significant ***,a poly(oxime-ester)(POE)network is developed to achieve high-resolution and multilevel patterning by photo-induced *** as-prepared POE exhibits the ability to transition from an opaque state to a transparent state under temperature stimuli,with the transition temperature and kinetics dependent on UV light exposure ***,complex patterns and information can be encrypted through different selective regional exposure time and decrypted under specific temperature or cooling ***,we illustrate an example of temporal communication,where cooling time or temperature serves as the encoded *** research expands the application scope of advanced encryption materials,showcasing the potential of POE in dynamic information encryption and decryption processes.

关键词： Poly(oxime-ester) Isomerization Phase patterning Information encryption

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

A New 2-Naphthate-based Layered Complex with Unusual Corner-sharing Triangular Magnetic Lattice

引用

Chinese Journal of Structural Chemistry 2015年第5期34卷 703-709页

作者： XIA Yan-fei YANG en-Cui LIU Zhong-Yi ZHAO Xiao-Jun College of Chemistry Key Laboratory of Inorganic-organic Hybrid Functional Material ChemistryMinistry of EducationTianjin Key Laboratory of Structure and Performance for Functional MoleculesTianjin Normal University Collaborative Innovation Center of Chemical Science and engineering (Tianjin)

A new 2-naphthate（NA-）-based coordination complex,[Cu3（μ3-OH）4（NA）2]n（1）,was hydrothermally prepared and structurally and magnetically characterized.1 crystallizes in the monoclinic P21/c space group with a = 19.990（7）,b = 5.616（2）,c = 9.179（3） A,β = 96.536（6）°,V = 1023.8（7） A^3,Dc = 1.950 g/cm^3,Mr = 300.49,Z = 4,F（000） = 602,μ = 3.138 mm^-1,the final R = 0.0317 and w R = 0.0818 for 4944 observed reflections with I 〉 2σ（I）.Complex 1 exhibits an extended corner-sharing {Cu3（μ3-OH）}^5＋ triangle-based layered structure with the NA^-ligands located on both *** interplay of the typical anti-and ferromagnetic interactions mediated by μ3-OH^-and μ-syn,syn-carboxylate heterobridges leads to the overall intralayer ferromagnetic couplings of 1.

关键词： 2-naphthoic acid corner-sharing triangle crystal structure magnetic lattice

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

Indocyanine green-based nanodrugs: A portfolio strategy for precision medicine

引用

Progress in Natural Science:Materials International 2020年第5期30卷 577-588页

作者： Qixuan Dai en Ren Dazhuang Xu yun Zeng Chuan Chen Gang Liu Department of Pharmacy Xiamen Medical College State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine School of Public Health Xiamen University Amoy Hopeful Biotechnology Co. Ltd.

As the sole cyanine dye approved by the Food and Drug Administration(FDA), indocyanine green(ICG) has been widely applied in solid tumor and metastases surgical navigation as well as malignant tissue destruction. The great performance of ICG benefits from excellent fluorescent properties in the near infrared region(NIR) and reactive oxygen species(ROS) or hyperthermia effects under irradiation. Nevertheless, some intrinsic limitations, such as unstable optical properties, concentration-dependent aggregation, proneness to photo-bleaching, and poor aqueous stability in vivo, severely restrict its further applications. To overcome these challenges, ICG-based nanodrugs(nanoICG), as one kind of portfolio strategy, could bridge the efficient cargo-carriers and ICG molecules to artificially improve their existing performance. In this mini-review, we will focus on the developed engineering strategies for nano-ICG formulation synthesis and their desired performance in tumor tracing and eradication. A critical analysis of assembly mechanisms, excellent performance, and further improvement tactics will be examined.

关键词： ICG Nanomedicine Self-assembly Tumor theranostics Tumor synergistic treatment

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Eco-geological environment quality assessment based on multi-source data of the mining city in red soil hilly region, China

引用

Journal of Mountain Science 2022年第1期19卷 253-275页

作者： ZHAO fei-fei HE Man-chao WANG yun-tao TAO Zhi-gang LI Chun State Key Laboratory for GeoMechanics and Deep Underground engineering China University of Mining and Technology(Beijing)Beijing 10083China School of Mechanics and Civil engineering China University of Mining and Technology(Beijing)Beijing 10083China Beijing Institute of Geology Beijing 100010China Key Laboratory of Geotechnical and Underground engineering Tongji UniversityMinistry of EducationShanghai 200082China Beijing Baodiyilian Geological Exploration engineering Technology Co.LTD Beijing 100010China

High-intensity and large-scale resource development seriously threatens the fragile ecological environment in the red soil hilly region in southern China. This paper analyzes the eco-geological environmental problems and factors affecting Ganzhou, a mining city in the red soil hilly region,based on field survey and literature. The ecogeological environment quality(EGEQ) assessment system, which covered 11 indicators in physical geography, mining development, geological hazards,as well as water and soil pollution, was established through multi-source data utilization such as remote sensing images, DEM(Digital Elevation Model), field survey and on-site monitoring data. The comprehensive weight of each indicator was calculated through the Analytic Hierarchy Process(AHP) and entropy method. The eco-geological environment assessment map was developed by calculating the EGEQ value through the linear weighted method. The assessment results show that the EGEQ was classified into I-V grades from excellent to worse, among which, EGEQ of I-II accounted for 29.88%, EGEQ of III accounted for 32.35% and EGEQ of IV-V accounted for 37.77%;the overall EGEQ of Ganzhou was moderate. The assessment system utilized in this research provides scientific and accurate results, which in turn enable the proposal of some tangible protection suggestions.

关键词： Eco-geological environment assessment Mining city Red soil hilly region AHP entropy method

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

SLEACH: Secure Low-energy Adaptive Clustering Hierarchy Protocol for Wireless Sensor Networks

引用

Wuhan University Journal of Natural Sciences 2005年第1期10卷 127-131页

作者： WANGXiao-yun YANGLi-zhen CHenKe-fei DepartmentofComputerScienceandengineering ShanghaiJiaotongUniversityShanghai200030China／／DepartmentofInformationandCommunicationTongjiUniversityShanghai200092China DepartmentofComputerScienceandengineering ShanghaiJiaotongUniversityShanghai200030China

LEACH (Low-encrgy Adaptive Clustering Hi-erarchy) protocol is a basic clustering-based routing protocol of sensor networks. In this paper, we present the design of SLEACH, asecure extension for the LEACH protocol. We divide SLEACH into four phases and fit inexpensivecryplp-graphic operations to each part of the protocol functionality to create an efficient,practical protocol. Then we give security analyses of SLEACH. Our security analyses show that ourschemeis robust against any external attacker or compromised nodes in the sensor network.

关键词： wireless sensoi network routing protocol security

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

Biochemical Properties and Inhibition Kinetics of Phosphatase from Wheat Thylakoid Membranes

引用

Journal of Integrative Plant Biology 2006年第3期48卷 294-299页

作者： Mei-Juan fei Jian-Sheng Chen Xiao-yun Wang College of Life Sciences Shandong Agricultural University Taian 271018 China Shandong Key Laboratory of Crop Biology Shandong Agricultural University Taian 271018 China

A phosphetase that hydrolyses phosphate monoesters has been Isolated from wheat thylakold membranes. Biochemical properties and inhibition kinetics of the phosphatase were Investigated using several Ions, organlc solvents, and Inhlbltors. Wheat （Trltlcum aestivum L. cv. PH82-2-2） thylakold membrane phosphatase activity was activated by Mg^2＋, Ca^2＋, and Fe^2＋ and was inhibited by Mn^2＋ and Cu^2＋. For example, enzyme activity was acUvated 34.81% by 2 mmol/l. Mg^2＋, but was Inhibited 22.3% and 8.5% by 2 and 1 mmol/L Cu^2＋, respectively. Methanol, ethanol and glycol were all able to activate enzyme activity. enzyme activity was activated 58.5%, 48.2%, and 8.7% by 40% ethanol, methanol and glycol, respectively. From these results, It can be seen that the degree of actlvetlon of the phosphetase was greatest for ethanol and the type of acUvatlon was uncompetltlve. Moreover, the activity of the thylakold membrane phosphetase was Inhibited by molybdate, vanadete, phosphate, and fluoride and the type of Inhibition produced by these elements was uncompetltlve, non-competitive, competltlve and mixed, respectively.

关键词： calcium ions copper enzyme activity enzyme inhibitors enzymes ethanol ferric ions fluoride glycols ions kinetics magnesium manganese methanol molybdates phosphate phosphoric monoester hydrolases solvents thylakoids wh eat

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

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：