检索结果-南通市图书馆

Numerical solutions of rotational normal modes of a triaxial two-layered anelastic Earth

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2019年第2期10卷 118-129页

作者： Wenbin Shen Zhuo Yang Zhiliang Guo Wenying Zhang Department of Geophysics School of Geodesy and Geomatics/Key Laboratory of Geospace Environment and Geodesy of Ministry of EducationWuhan University State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University

The Earth's rotational normal modes depend on Earth model used, including the layer structures,principal inertia moments of different layers and the compliances. This study focuses on providing numerical solution of the rotational normal modes of a triaxial two-layered anelastic Earth model without external forces but with considering the complex forms of compliances and the electromagnetic coupling between the core and mantle. Based on the present knowledge of the Chandler wobble(CW) and Free Core Nutation(FCN), we provide a set of complete compliances which could be used for reference in further investigations. There are eight rotational normal mode solutions, four of which might exist in nature. However, in reality only two of these four solutions correspond to the present motion status of the prograde CW and the retrograde FCN. On one hand, our numerical calculations show that the periods and quality factors(Qs) of CW and FCN are respectively 434.90 and 429.86 mean solar days(d) and 76.56 and 23988.47 under frequency-dependent assumption, and the triaxiality prolongs CW about 0.01 d and has hardly effect on FCN. On the other hand, we analyze the sensibility of compliances and electromagnetic coupling parameter on the periods and Qs of CW and FCN and find the sensitive parameters with respect to them.

关键词： Earth rotation Triaxial two-layered anelastic Earth model Compliances Rotational normal modes Numerical solution

two-and Three-layered Dissolving Microneedles for Transcutaneous Delivery of Model Vaccine Antigen in Rats

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

Journal of Biomaterials and Nanobiotechnology 2012年第3期3卷 325-334页

作者： Asuka Ikejiri Yukako Ito Seishiro Naito Kanji Takada Department of Pharmacokinetics Kyoto Pharmaceutical University Kyoto Japan Department of Safety Research on Blood and Biological Products National Institute of Infectious Diseases Tokyo Japan.

Purpose: Comparison of transcutaneous immunization of ovalbumin (OA) between two-and three-layered dissolving microneedles (MN) in rats. Methods: We prepared 500 μm long two-layered and three-layered dissolving microneedle (2-MN and 3-MN, respectively) arrays from chondroitin sulfate as the base, and OA as the model antigen. The 2-MN containing OA at the acral portion and 3-MN with OA at the second portion were administered to rat skin transcutaneously. As a positive control, OA solution was injected subcutaneously (sc). The OA delivery and diffusion in the rat skin were studied using confocal microscopy with fluorescein-conjugated OA (FL-OA). Results: The formulated positions of OA were 0-155 ± 5 μm for 2-MN and 175 ± 4 – 225 ± 5 μm for 3-MN. The administered doses of OA were 2.2 ± 0.1 μg, 12.0 ± 0.2 μg and 22.0 ± 0.2 μg for 2-MN, 1.8 ± 0.2 μg, 12.6 ± 0.7 μg, and 20.4 ± 0.3 μg for 3-MN, 10 μg, 100 μg and 1000 μg for sc injection. At 4 weeks after the first administration, 3-MN showed about 2.5-7.0 fold and 5.4 fold higher total Ig (G + A + M) antibody than 2-MN and sc injection of the OA solution. Conclusions: The 3-MN, which delivered OA to the epidermis, is a useful drug delivery system for transcutaneous antigen delivery.

关键词： Dissolving Microneedles (Mns) two-layered Mns Three-layered Mns Transcutaneous Vaccine Ovalbumin Fl-Ovalbumin (Fl-Oa)

An Institutional Perspective on China＇ s Rural and Urban Gap in University Enrollment Opportunities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

西安翻译学院学报 2015年第3期22卷 71-74页

作者： Cheng Zhe University of Antwerp Institute of Development Policy and Management Antwerp Belguim 2000

This part of our current research introduces a new set of symbolism so that some of the historically well- known paradoxes, such as the liar＇s, barber＇s, and Russell＇s paradoxes, are no longer paradoxical.

关键词： Liar' s paradox, Barber' s paradox, two-layered reasoning

Actual and Potential Infinite IV： Resolving Russell’s Parado

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

西安翻译学院学报 2014年第4期21卷 68-71页

作者： Jeffrey Forrest Bangyan Wen Quentin Panger Department of Mathematics Pennsylvania State System of Higher Education at Slippery RockSlippery RockPA16057USA Innovation Center for Economics and Logic Tianjin University of CommerceTianjinPRChina 139 Alana Drive SaxonburgPA 16056

This part of our current research introduces a new set of symbolism to prove that some of the historically well-known paradoxes, such as the liar＇ s, barber＇ s, and Russell＇ s paradoxes, are no longer paradoxical.

关键词： Liar' s paradox, Barber' s paradox, two-layered reasoning