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亚马孙橡胶新种质的遗传育种

世界热带农业信息 1988年第5期 1-5页

作者： a.clement-Demange 黄循精毛根海

本文报道了用亚马孙橡胶新种质材料作为无性系或作为杂交亲本。试验结果表明,直接获得生长量、产量和形态结构都良好的亚马孙无性系的可能性似乎很小,但利用亚马孙种质与魏克汉种质杂交产生优良有性系是可能的。本文还列出了几个令人感... 详细信息

本文报道了用亚马孙橡胶新种质材料作为无性系或作为杂交亲本。试验结果表明,直接获得生长量、产量和形态结构都良好的亚马孙无性系的可能性似乎很小,但利用亚马孙种质与魏克汉种质杂交产生优良有性系是可能的。本文还列出了几个令人感兴趣的杂交后代。

关键词：杂交无性系 GTI 生长量魏克汉种质亚马孙有性系初级系比新种质

CONJUNCTIVAL IMPRESSION CYTOLOGY AFTER GLAUCOMA FILTERING SURGERY

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国际眼科杂志 2003年第1期3卷 30-30页

作者： a.clement Corral M.A.Muriel Herrero A.H.Estrada M.A.Corral G.Rebolleda F.J.Munoz-Negrete L.Rivas Jara Hospital Ramon Y Cajal Hospital Ramon Y CajalHospital Ramon Y CajalHospital Ramon Y CajalHospital Ramon Y CajalAlcala University SpainHospital Ramon Y Cajal

Purpose: To evaluate the postoperative ocular surface modifications by conjunctival impression cytology after filtering surgery. Methods: We have prospectively studied 27 eyes of 23 patients who underwent trabeculectomy or non-penetrating deep sclerec-tomy. Conjunctival impression cytology was performed before surgery and 15 days, 1,3 and 6 months after filtering surgery. We evaluated the degree of squamous metaplasia and the

关键词：青光眼滤过术结膜印记细胞学术后眼青变化

Averaging in SU(2) open quantum random walk

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Chinese Physics B 2014年第3期23卷 109-111页

作者： clement Ampadu 31 Carrolton Road Massachusetts Boston 02132 USA

We study the average position and the symmetry of the distribution in the SU（2） open quantum random walk （OQRW）. We show that the average position in the central limit theorem （CLT） is non-uniform compared with ... 详细信息

关键词： open quantum random walk central limit theorem average position SU(2) operator

Brun-Type Formalism for Decoherence in Two-Dimensional Quantum Walks

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Communications in Theoretical Physics 2012年第1期57卷 41-55页

作者： clement Ampadu 31 Carrolton Road BostonMassachusetts02132USA

We study decoherence in the quantum walk on the *** generalize the method of decoherent coin quantum walk,introduced by [***,et al.,***.A 67(2003) 032304],which could be applicable to all sorts of decoherence in two-dimensional quantum walks,irrespective of the unitary transformation governing the *** an application we study decoherence in the presence of broken line noise in which the quantum walk is governed by the two-dimensional Hadamard operator.

关键词： coin-position decoherence quantum random walk coin decoherence

Return Probability of the Open Quantum Random Walk with Time-Dependence

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Communications in Theoretical Physics 2013年第5期59卷 563-567页

作者： clement Ampadu 31 Carrolton Road Boston Massachusetts 02132 USA

We study the open quantum random walk (OQRW) with time-dependence on the one-dimensional lattice space and obtain the associated limit distribution. As an application we study the return probability of the OQRW. We al... 详细信息

关键词： open quantum random walk return probability limit theorem central limit theorem average time

Return Probability of the Fibonacci Quantum Walk

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Communications in Theoretical Physics 2012年第8期58卷 220-224页

作者： clement AMPADU 31 Carrolton Road Boston Massachusetts 02132 USA

In this paper the return probability of the one-dimensional discrete-time quantum walk is studied. We derive probabilistic formulas for the return probability related to the quantum walk governed by the Fibonacci coin.

关键词： return probability Fibonacci transformation quantum random walk

Kinetic and thermodynamic studies on partitioning of polychlorinated biphenyls (PCBs) between aqueous solution and modeled individual soil particle grain sizes

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Journal of Environmental Sciences 2019年第2期31卷 100-110页

作者： Gbadebo clement Adeyinka Brenda Moodley School of Chemistry and Physics College of AgricultureEngineering and SciencesUniversity of KwaZulu-Natal

The significance of soil mineral properties and secondary environmental conditions such as pH, temperature, ionic strength and time in the partitioning of eight selected polychlorinated biphenyl(PCB) congeners between aqueous solution and soil particles with different grain sizes was studied. The mineral properties of a model soil sample were determined, and Brunauer–Emmett–Teller(BET) adsorption–desorption isotherms were employed to observe the surface characteristics of the individual modeled soil *** adsorption experiments were conducted to determine the sorption of PCBs onto soil particles of different sizes. The results revealed that the sorption of PCB congeners onto the soil was dependent on the amount of soil organic matter, surface area, and pore size distribution of the various individual soil particles. Low pH favored the sorption of PCBs,with maximum sorption occurring between pH 6.5 and 7.5 with an equilibration period of 8 *** in the ionic strength were found to be less significant. Low temperature favored the sorption of PCBs onto the soil compared to high temperatures. Thermodynamic studies showed that the partition coefficient(K_d) decreased with increasing temperature, and negative and low values of ΔH° indicated an exothermic physisorption process. The data generated is critical and will help in further understanding remediation and cleanup strategies for polluted water.

关键词： Partitioning PCBs Soil particle grain sizes Kinetics Thermodynamic studies pH

A time series for monitoring vegetation activity and phenology at 10-daily time steps covering large parts of South America

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International Journal of Digital Earth 2011年第5期4卷 365-386页

作者： clement Atzbergera Paul HCEilers Joint Research Centre of the European Commission(JRC) Institute for the Protection and Security of the CitizenMARS unitVia Enrico Fermi 274921027 IspraItaly Department of Biostatistics Erasmus Medical CentreDr.Molewaterplein 503015 GE RotterdamThe Netherlands

It is widely accepted that natural resources should only be sustainably exploited and utilized to effectively preserve our planet for future *** better manage the natural resources,and to better understand the closely linked Earth systems,the concept of Digital Earth has been strongly promoted since US Vice President Al Gore’s speech in *** core element of Digital Earth is the use and integration of remote sensing *** satellite imagery can cover the entire globe repeatedly at a sufficient high-spatial resolution to map changes in land cover and land use,but also to detect more subtle changes related for instance to climate *** uncover global change effects on vegetation activity and phenology,it is important to establish high quality time series characterizing the past situation against which the current state can be *** the present study we describe a time series of vegetation activity at 10-daily time steps between 1998 and 2008 covering large parts of South America at 1 km spatial *** emphasis was put on noise *** carefully filtered time series of vegetation indices can be used as a benchmark and for studying vegetation dynamics at a continental *** temporal smoothing,subtle spatio-temporal patterns in vegetation composition,density and phenology would be hidden by atmospheric noise and undetected *** noise is immanent in data that have undergone solely a maximum value *** the present study,the Whittaker smoother(WS)was applied to a SPOT VGT time *** WS balances the fidelity to the observations with the roughness of the smoothed *** algorithm is extremely fast,gives continuous control over smoothness with only one parameter,and interpolates *** filtering efficiently removed the negatively biased noise present in the original data,while preserving the overall shape of the curves showing vegetation growth and *** variog

关键词： :digital earth remote sensing global environmental change SPOT VGT Whittaker smoother NDVI seasonality earth observation global data bases image processing natural resources vegetation indices

Dibaryons: Molecular versus compact hexaquarks

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Chinese Physics C 2021年第2期45卷 23-38页

作者： H.clement T.Skorodko Physikalisches Institut der Universität Tübingen and Kepler Center for Astro and Particle Physics University of TübingenAuf der Morgenstelle 14D-72076 TübingenGermany

Hexaquarks constitute a natural extension of complex quark systems,just as tetra-and pentaquarks *** this end,the current status of d^(*)(2380)in both experiment and theory is *** high-precision meas-urements in the nucleon-nucleon channel and analyses thereof have established d^(*)(2380)as an indisputable reson-ance in the long-sought dibaryon *** features of this I(J^(P))=0(3^(+))state are its narrow width and deep binding relative to the 0(1232)0(1232)*** decay branchings favor theoretical calculations predict-ing a compact hexaquark nature of this *** review the current status of experimental and theoretical studies on d^(*)(2380)as well as new physics aspects it may bring in *** addition,we review the situation at the 0(1232)N and N^(*)(1440)N thresholds,where evidence for a number of resonances of presumably molecular nature has been found-similar to the situation in charmed and beauty ***,we briefly discuss the situation of dibaryon searches in the flavored quark sectors.

关键词： dibaryon hexaquark molecule