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multiparty Quantum Cryptographic Protocol

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Chinese Physics Letters 2008年第10期25卷 3543-3546页

作者： m. Ramzan m. K. Khan Department of Physics Quaid-i-Azam University Islamabad 45320 Pakistan

We propose a multiparty quantum cryptographic protocol. Unitary operators applied by Bob and Charlie, on their respective qubits of a tripartite entangled state encoding a classical symbol that can be decoded at Alice＇s end with the help of a decoding matrix. Eve＇s presence can be detected by the disturbance of the decoding matrix. Our protocol is secure against intercept resend attacks. Furthermore, it is eifficient and deterministic in the sense that two classical bits can be transferred per entangled pair of qubits. It is worth mentioning that in this protocol, the same symbol can be used for key distribution and Eve＇s detection that enhances the etfficiency of the protocol.

关键词： the power-law exponents precipitation durative abrupt precipitation change

Dynamic behavior of sandwich beams with different compositions of magnetorheological fluid core

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International Journal of Smart and nano materials 2021年第1期12卷 88-106页

作者： Subash Acharya Vipin J Allien Puneet n P Hemantha Kumar Department of mechanical Engineering NITK SurathkalMangaloreKarnatakaIndia

magnetorheological fluid(mRF)sandwich beams belong to a class of adaptive beams that consists of mRF sandwiched between two or more face layers and have a great prospective for use in semi-active control of beam vibrations due to their superior vibration suppression *** composition of mRF has a strong influence on the mRF properties and hence affects the vibration characteristics of the *** this work,six mRF samples(mRFs)composed of combination of two particle sizes and three weight fractions of carbonyl iron pow-der(CIP)were prepared and their viscoelastic properties were *** mRFs were used to fabricate different mRF core sandwich ***,a sandwich beam with commer-cially available mRF 132DG fluid as core was *** modal parameters of the cantilever mRF sandwich beams were determined at different magnetic ***,sinusoidal sweep excitation tests were performed on these beams at different magnetic fields to investigate their vibration suppres-sion *** having larger particle size and higher weight fraction of CIP resulted in higher damping ratio and vibration ***,optimal particle size and weight fraction of CIP were determined based on the maximization of damping ratio and minimization of weight of mRF.

关键词： Smart materials adaptive sandwich beam damping ratio vibration suppression complex shear modulus

RAPD marker linked with sbm-1, a gene conferring resistance to pea seed-born mosaic virus

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Chinese Science Bulletin 1996年第21期41卷 1831-1834页

作者：李汝刚范云六 n.F.Weeden Biotechnology Research Center Chinese Academy of Agricultural Sciences Beijing 100081 China Department of Horticulture Cornell UniversityUSA

DnA markers linked with trait of disease-resistance offer a very useful tool forselection of putative disease-resistant progeny and cloning disease-resistant ***-born mosaic virus(PSbmV)is spread mainly through planting infected pea seeds andby non-persistent aphid *** strains of PSbmV have been identified,designated as P-1,L and *** P-1 is most widely *** recessive

关键词： pea pea seed-born mosaic virus RAPD.

Estimating upper stem diameters and volume of Douglas-fir and Western hemlock trees in the Pacific northwest

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Forest Ecosystems 2018年第3期5卷 199-210页

作者： Krishna P.Poudel Hailemariam Temesgen Andrew n.Gray Department of Forest Engineering Resources and Management College of Forestry Oregon State University USDA Forest Service PNW Research Station

Background: Volume and taper equations are essential for obtaining estimates of total and merchantable stem volume. Taper functions provide advantages to merchantable volume equations because they estimate diameter inside or outside bark at specific heights on the stem, enabling the estimation of total and merchantable stem volume, volume of individual logs, and a height at a given ***: Using data collected from 1218 trees(1093 Douglas-fir(Pseudotsuga menziesii(mirbel) Franco) and 125 western hemlock(Tsuga heterophylla)), we evaluated the performance of one simple polynomial function and four variable-exponent taper functions in predicting upper stem diameter. Sample trees were collected from different parts of the states of Oregon, Washington, and California. We compared inside-bark volume estimates obtained from the selected taper equation with estimates obtained from a simple logarithmic volume equation for the data obtained in this study and the equations used by the Forest Inventory and Analysis program in the Pacific northwest(FIA-PnW) in the state of California and western half of the states of Oregon and ***: Variable exponent taper equations were generally better than the simple polynomial taper *** FIA-PnW volume equations performed fairly well but volume equations with fewer parameters fitted in this study provided comparable results. The RmSE obtained from taper-based volume estimates were also comparable with the RmSE of the FIA-PnW volume equations for Douglas-fir and western hemlock trees ***: The taper equations fitted in this study provide added benefit to the users over the FIA-PnW volume equations by enabling the users to predict diameter at any height, height to a given diameter, and merchantable volume in addition to cubic volume including top and stump(CVTS) of Douglas-fir and western hemlock trees in the Pacific northwest. The findings of this study also give more confidence to the use

关键词： Pacific northwest Biomass equations Utilization standards Diameter inside bark

Crystallographic and Low Frequency Conductivity Studies of the Spinel Systems CuFe_2O_4 and Cu_(1-x)Zn_xGa_(0.1)Fe_(1.9)O_4

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沈阳理工大学学报 2010年第3期29卷 87-94页

作者： A.m. Hashhash n.n. nikitenkov I.P. Chernov Yu.I. Tyurin Tomsk polytechnic university

Spinel solid solutions of CuFe2O4 and Cu1-xZnxGa0.1Fe1.9O4 with (0.0≤x≤0.5) are synthesized. Crystallographic phase transformation from tetragonal-to-cubic occurred at x=0.2. The derived structural parameters manifest that Zn occupies the tetrahedral A-site while Cu and Ga occupy the octahedral B-site and Fe distributes among A-and B-sites. Electrical conductivity measurements of these materials as a function of temperature and frequency revealed semiconducting behavior except CuFe2O4 sample,which has a metallic behavior at low frequency and at high frequency,metallic-to-semiconductor transition occurred as temperature increases. The metallic behavior in this sample is attributed to cation-cation interactions at B-site while,the semiconductor behavior in Cu1-xZnxGa0.1Fe1.9O4 compounds is due to the cation-anion-cation interactions at the same site in the spinel lattice. All compositions exhibit transition with change in the slope of conductivity versus temperature curve. This transition temperature (Tc) decreases linearly with increasing Zn content x. The relation of the universal exponent s with temperature gives evidence that over large polaron OLP and correlated barrier hopping CBH conduction mechanisms are presented in CuFe2O4 and Cu1-xZnxGa0.1Fe1.9O4 compounds respectively.

关键词：尖晶石固溶体铁酸铜电导率

Petrogenetic study of mesoproterozoic volcanic rocks of north Delhi fold belt, nW Indian shield: implications for mantle conditions during Proterozoic

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Chinese Journal Of Geochemistry 2015年第1期34卷 93-114页

作者： m.S.Azam m.Shamim Khan m.Raza IGnOU Regional Center Department of Geology AMU

mesoproterozoic north Delhi fold belt of nW Indian shield comprises three volcano-sedimentary basins viz. Bayana, Alwar and Khetri aligned parallel to each other from east to west. Each basin contains excellent exposures of mafic volcanic rocks. major, trace and rare earth element abundances of volcanic rocks of the three basins are significantly diverse. Bayana and Alwar volcanics are tholeiites bearing close similarity with low Ticontinental flood basalts. However, Bayana volcanics are characteristically enriched in incompatible trace elements and REEs while Alwar volcanics display least enriched incompatible trace element abundances and flat REE patterns. The Khetri volcanics exhibit a transitional composition between tholeiite and calc-alkaline basalts. REE based source modeling suggests that Bayana suite was formed from the melts derived from 1 % to 10 %(avg.4 %) of the partial melting of a spinel lherzolite source giving a residual mineralogy of 56 % Olv, 25 % Opx and19 % Cpx. Whereas Alwar suite evolved through 12 %–20 %(avg. 15 %) partial melting of the same source with a residual mineralogy 61 % Olv, 25 % Opx and 14 % *** volcanics are exposed at two localities Kolihan and madhan–Kudhan. The Kolihan volcanics were derived from 1 % to 6 %(avg. 4 %) partial melting with residualmineralogy 56 % Olv, 25 % Opx and 19 % Cpx whereas the magma of madhan Kudhan volcanic suite was generated by 15%–30 % partial melting of the same source leaving behind 64 % Olv, 25 % Opx and 11 % Cpx as residual mineralogy. This source modeling proves that melts of Bayana and Alwar tholeiites were generated by partial melting of a common source within the spinel stability field under the influence of mantle plume. During the course of ascent, Bayana melts were crustally contaminated but Alwar melts remained unaffected. There was two tier magma production in Khetri region, one from the partial melting of the mantle wedge overlying the subducted oceanic plate which formed Kolihan

关键词：基性火山岩中元古代西印度地幔柱褶皱带岩石成因西北地盾

The Japanese ladybirds, Coccinula crotchi and Coccinula sinensis, are infected with very closely related strains of male-killing Flavobacterium

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Insect Science 2014年第6期21卷 699-706页

作者： Sherif Elnagdy Susan messing michael E. n. majerus Department of Genetics University of Cambridge Downing Street Cambridge CB2 3EH UK Botany Department Faculty of Science Cairo University Giza Egypt University of Rochester Rochester New York USA Department of Biostatistics and Computational Biology University of Rochester Rochester New York USA

male-killing is 1 of 4 known strategies that inherited parasitic endosymbionts have evolved to manipulate their host＇s reproduction. In early male-killing, infected male offspring are killed early in embryogenesis. Within the Insecta, male-killing bacteria have been found in a wide range of hosts. The Coccinellidae families of beetles, better known as ladybirds, are particularly prone to male-killer invasion. In samples of the coccinellid, Coc- cinula crotchi, from Japan, a new male-killing bacterium was revealed by phenotypic assay. molecular genetic analysis revealed the identity to be a tetracycline-sensitive Flavobac- terium that causes female-biased offspring sex ratio. Furthermore, that Flavobacterium strain was found to be closely related to the Flavobacterium causing male-killing in the congeneric Japanese coccinellid, Coccinula sinensis, which was collected from the same region. However, we found slightly different Flavobacterium strains infecting C. sinen- sis from regions with different environmental conditions. This may be an indication of horizontal transmission of male-killing Flavobacterium between these 2 ladybird spices. Finally, environmental conditions may affect the spread of male-killing bacteria among their hosts.

关键词： Coccinula crotchi Coccinula sinensis endosymbionts Flavobacterium inherited bacteria male-killing sex ratio distorter

magnetic susceptibility of Al_2RE compounds in crystal and liquid states

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Journal of Rare Earths 2011年第8期29卷 768-771页

作者： n.S. Uporova S.A. Uporov V.E. Sidorov Ural State Pedagogical University

magnetic susceptibility of Al2RE （RE=Y, Ce, Sm, Gd, Dy, Ho, Yb） compounds was studied experimentally in wide temperature （T=290–2000 K） and field （B=0.3–1.3 T） intervals. The abnormal increase in susceptibility beginning above the melting point was fixed for all the compositions. The values for the effective magnetic moments per RE atoms in these compounds were found to be smaller than the values typical for free ions RE3＋. The results were discussed in supposition of the directed bonds between aluminum and rare-earth atoms.

关键词： Al2RE intermetallic compounds magnetic susceptibility rare earths

Improving the haploidization toolbox:maternal factors take the stage

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molecular Plant 2023年第4期16卷 651-653页

作者： maria Flores-Tornero Helena Sapeta Jorg D.Becker Instituto de Tecnologia Quimica e Biologica Universidade Nova de LisboaAv.daRepublica2780-157OeirasPortugal

Plant breeders have a great interest in obtaining plants that are genetically homogeneous as quickly as possible,with high efficiency and at low *** approaches,including selfing or backcrossing,cannot provide *** technologies,however,offer a solution and are therefore the subject of intensive research,in particular during the last decade.

关键词： breed homogeneous quickly