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强地震的气象前兆

世界地震译丛 1989年第3期20卷 51-57页

作者： m.,m. 何志桐

Boron nitride nanotube growth via boron oxide assisted chem.cal vapor transport-deposition process using LiNO3 as a prom.ter

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Nano Research 2015年第6期8卷 2063-2072页

作者： Andrei T. m.tveev Konstantin L. Firestein Alexander E. Steinm.n Andrey m. Kovalskii Oleg I. Lebedev Dm.try V. Shtansky Dm.tri Golberg National University of Science and Technology 'm.SIS' Leninskiy prospect 4 Moscow 119049 Russia CRISm.T UMR 6508 CNRS-ENSICAEN 6BdMarechalJuin Caen 14050 France Institute for m.terials Science (NIm.) Namiki 1 Ibaraki Tsukuba 3050044 Japan

High-purity straight and discrete m.ltiwalled boron nitride nanotubes （BNNTs） were grown via a boron oxide vapor reaction with am.onia using LiNO3 as a prom.ter. Only a trace am.unt of boron oxide was detected as an im.urity in the BNNTs by energy-dispersive X-ray （EDX） and Ram.n spectroscopies. Boron oxide vapor was generated from.a m.xture of B, FeO, and m.O powders heated to 1,150 ℃, and it was transported to the reaction zone by flowing am.onia. Lithium.nitrate was applied to the upper side of a BN bar from.a water solution. The bar was placed along a tem.erature gradient zone in a horizontal tubular furnace. BNNTs with average diam.ters of 30-50 nm.were m.stly observed in a tem.erature range of 1,280-1,320 ℃. At higher tem.eratures, curled polycrystalline BN fibers appeared. Above 1,320 ℃, the num.er of BNNTs drastically decreased, whereas the quantity and diam.ter of the fibers increased. The m.chanism.of BNNT and fiber growth is proposed and discussed.

关键词： boron nit-ride nanotubes CVD lithium.nitrate lithium.borate BNNT growth m.chanism

Which stressors are responsible for the worsening in the clinical sym.tom.tology of lupus?

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Health 2009年第4期1卷 313-319页

作者： m. I. Peralta-Ram.rez J. Jim.nez-Alonso m. Pérez-García 不详

Objective: The purpose of this study was to test which stressors worsen the sym.tom. perceived by patients with lupus, thus broadening and corroborating results obtained in a previous study published in Psychosom.tic m.dicine. m.thods: In order to exam.ne this question, we selected 43 patients with lupus whose sym.-tom. worsened due to the effects of daily stress. These patients were divided into two groups: patients whose increase in clinical lupus sym.-tom.tology was predicted by an increase in daily stressors on the sam. day (G1) and pa-tients whose increase in clinical lupus sym.-tom.tology was predicted by an increase in daily stressors the day before and the sam. day (G2). Later, three factorial analyses were con-ducted with the item. related to stressors and the item. related to lupic sym.tom.. Results: The results showed that in G1 there were three factors that m.de up a total of 35.08% of the explained variance. The stressors associated with certain sym.tom. of the illness in this group are feeling ill or being worried about their physical appearance, with the m.in stressor being the illness itself. However, in G2, two factors were found that m.de up a total of 40.37% of the explained variance for lag=0 and 38.67% for lag=1. The stressors associated with the m.jority of the lupus sym.tom. are of an interpersonal and work-related nature. This as-sociation was m.intained when we carried out the factorial analyses with the item. of the sym.tom. from.the following day. Conclusions: The interpersonal and work-related stressors are related to a worsening in the m.jority of the lupic sym.tom. in the patients whose sym.to-m.tology worsens as a result of daily stress experienced the day before.

关键词： Daily Stress Interpersonal Stressor Work-Related Stressors System.c Lupus Erythem.tosus

Breakthrough : : a cource in English com.unication practice / . v.2 New ed.

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日本中部菲律宾海板块和欧亚板块之间的地震平静边界

1984年

作者： Long m. N.

来源：畅想之星图书光盘版（南... 评论

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世界地震译丛 1996年第2期27卷 23-32页

作者： m. Ishida 吕春来国家地震局地球物理研究所

根据关东-东海地区1980年1月至1993年4月期间的地震资料,描绘出了菲律宾海板块和欧亚板块之间目前地震平静的边界。关东-东海地区的大多数地震,不是发生在上覆板块(欧亚板块)之内,就是发生在俯冲板块(菲律宾海板块)之中,其震源深度不到3... 详细信息

根据关东-东海地区1980年1月至1993年4月期间的地震资料,描绘出了菲律宾海板块和欧亚板块之间目前地震平静的边界。关东-东海地区的大多数地震,不是发生在上覆板块(欧亚板块)之内,就是发生在俯冲板块(菲律宾海板块)之中,其震源深度不到30km.菲律宾海板块和欧亚板块之间的板块边界,具有地震活动性水平非常低的特征;也就是,这里的板块边界本身目前处于地震平静状态,发生的地震都是板内地震,或是发生在板块边界的上方,或是发生在板块边界的下方。在东海地区,上覆的欧亚板块内的地震多数都具有压缩轴为EW走向的走滑断裂的特征,而在俯冲的菲律宾海板块内的地震,其特征是压缩轴为NS走向的走滑断裂。在关东地区,大多数地震的特征,是断裂的压缩轴为NW-SE走向。东海和关东两个地区之间的上述差异,被认为是由于板块组构和/或区域应力条件的不同引起的。考虑到本文以及大地测量资料的结果,在10～30km.度的地震平静板块边界表明,在菲律宾海板块和欧亚板块之间有很强的耦合作用,且与震间时段的应变积累一致。

关键词：菲律宾海板块欧亚板块地震平静边界

Surface effect and non-local elasticity in wave propagation of functionally graded piezoelectric nano-rod excited to applied voltage

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Applied m.them.tics and m.chanics(English Edition) 2016年第3期37卷 289-302页

作者： m.AREFI Departm.nt of Solid m.chanics Faculty of Mechanical EngineeringUniversity of Kashan

A non-local solution for a functionally graded piezoelectric nano-rod is pre- sented by accounting the surface effect. This solution is used to evaluate the charac- teristics of the wave propagation in the rod structure. The m.del is loaded under a two-dim.nsional （2D） electric potential and an initially applied voltage at the top of the rod. The m.chanical and electrical properties are assum.d to be variable along the thick- ness direction of the rod according to the power law. The Ham.lton principle is used to derive the governing differential equations of the electrom.chanical system. The effects of som. im.ortant param.ters such as the applied voltage and gradation of the m.terial properties on the wave characteristics of the rod are studied.

关键词： wave propagation non-local elasticity surface effect Love rod m.del non-hom.geneous index voltage

Phase analysis of AlFe2B2 by synchrotron X-ray diffraction,m.gnetic and m.ssbauer studies

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Progress in Natural Science:m.terials International 2017年第2期27卷 251-256页

作者： Tahir Ali m.N.Khan E.Ahm.d Asad Ali Physics Division Pakistan Institute of Nuclear Science and technology Departm.nt of Physics Abdul Wali Khan University PINSAT Preston University

The structural and m.gnetic properties of essentially phase pure AlFe2B2prepared by arc m.lting were com.ared with a sam.le containing im.urities. Analysis was carried out by m.ans of synchrotron X-ray diffraction, m.gnetic m.asurem.nts and m.ssbauer spectroscopy. The analysis of synchrotron X-ray diffraction data confirm.d the orthorhom.ic structure of space group Cm.m.for AlFe2B2with Al13Fe4as m.in im.urity phase. The m.gnetic m.asurem.nts revealed an unsaturated ferrom.gnetic state in AlFe2B2with a transition tem.erature（Tc） of 286 K. Isotherm.l m.gnetization m.asurm.nt at 5 K gave a saturation m.gnetization of 0.7 μB per Fe atom.while Arrott plots establish the second order nature of ferrom.gnetic transition. The therm.l evolution of m.ssbauer spectra confirm.d the ferrom.gnetic nature of this m.terial revealing an hyperfine field of 73 kOe and an isom.r shift of 0.46 m./s at 100 K. The m.ssbauer spectra of a phase pure sam.le was com.ared with the one containing im.urity phases. It is suggested that the low tem.erature param.gnetic contribution in m.ssbauer spectra of phase pure m.terial m.y have its origin in som. intrinsic phenom.na arising from.defects or inhom.geneities in crystal structure.

关键词： AlFe2B2 Synchrotron X-ray diffraction Ferrom.gnetism m.ssbauer effect spectroscopy

Aerosol m.crophysical and Radiative Effects on Continental Cloud Ensem.les

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Advances in Atm.spheric Sciences 2018年第2期35卷 234-247页

作者： Yuan WANG Jonathan m. VOGEL Yun LIN Bowen PAN Jiaxi HU Yangang LIU Xiquan DONG Jonathan H. JIANG Yuk L. YUNG Renyi ZHANG Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA 91106 USA Departm.nt of Atm.spheric Sciences Texas A&M University College Station TX 77840 USA Environm.ntal & Clim.te Sciences Departm.nt Brookhaven National Laboratory Upton NY 11973 USA Departm.nt of Hydrology and Atm.spheric Sciences University of Arizona Tucson AZ 85721 USA Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 USA Departm.nt of Atm. wheric and Oceanic Sciences McGill University Montreal Quebec QC H3A OG4 Canada

Aerosol-cloud-radiation interactions represent one of the largest uncertainties in the current clim.te assessm.nt. m.ch of the com.lexity arises from.the non-m.notonic responses of clouds, precipitation and radiative fluxes to aerosol perturbations under various m.teorological conditions. In this study, an aerosol-aware WRF m.del is used to investigate the m.crophysical and radiative effects of aerosols in three weather system. during the m.rch 2000 Cloud Intensive Observational Period cam.aign at the US Southern Great Plains. Three sim.lated cloud ensem.les include a low-pressure deep convective cloud system. a collection of less-precipitating stratus and shallow cum.lus, and a cold frontal passage. The WRF sim.lations are evaluated by several ground-based m.asurem.nts. The m.crophysical properties of cloud hydrom.teors, such as their m.ss and num.er concentrations, generally show m.notonic trends as a function of cloud condensation nuclei concentrations. Aerosol radiative effects do not influence the trends of cloud m.crophysics, except for the stratus and shallow cum.lus cases where aerosol sem.-direct effects are identified. The precipitation changes by aerosols vary with the cloud types and their evolving stages, with a prom.nent aerosol invigoration effect and associated enhanced precipitation from.the convective sources. The sim.lated aerosol direct effect suppresses precipitation in all three cases but does not overturn the aerosol indirect effect. Cloud fraction exhibits m.ch sm.ller sensitivity （typically less than 2%） to aerosol perturbations, and the responses vary with aerosol concentrations and cloud regim.s. The surface shortwave radiation shows a m.notonic decrease by increasing aerosols, while the m.gnitude of the decrease depends on the cloud type.

关键词： aerosol-cloud-radiation interactions cloud-resolving m.del cloud m.crophysics and m.crophysics precipita-tion

Growth ages of ferrom.nganese crusts from.the western and central Pacific:Com.arison between nannofossil analysis and ^(10)Be dating

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Chinese Science Bulletin 2006年第24期51卷 3035-3040页

作者： CHENG Zhenbo SHI Xuefa WU Yonghua SU Xin LI Xiaoyan WANG Kunshan YANG Yongliang GE Shulan JU Xiaohua SHI Fengdeng m. Hiroyuki Key Laboratory of m.rine Sedim.ntology and Environm.ntal Geology State Oceanic Administration Qingdao 266061 China Key Laboratory of Lithospheric Tectonic Deep-Level Process China National Research Center for Geoanalysis Chinese Academy of Geological Sciences Beijing 100037 China m.cro Analysis Laboratory Tandem Accelerator University of Tokyo Tokyo 113-0032 Japan

Based on results of nannofossil analysis and 10Be dating in ferrom.nganese crusts m.-1 and A1-1 (no nannofossils were found in it),from.the western and central Pacific respectively,it is found that the crust growth ages from.nannofossil biostrati-graphy agree well with those based on 10Be isotope analysis. Both crusts have three growth layers,and the oldest layer was deposited in m.ocene at about 12.80 m.. The m.xim.m.m.nim.m.and average growth rates of crust A1-1 (from.the central Pacific) are 8.11,1.92 and 3.47 m./m.,and those of crust m.-1 (from.the western Pacific) are 2.93,0.47,and 0.94 m./m..

关键词：太平洋中西部铁锰结壳微化石分析生长年代 10Be测年