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Modeling and Numerical Simulation of Material Science 2014年第3期4卷 136-142页

作者： abel Garcia-Barrientos Volodymyr Grimalsky CIICAp Autonomous University of Morelos State (UAEM) Morelos México Electronics and Computer Science Department Research Center on Information Technology and Systems Autonomous University of Hidalgo State (UAEH) Hidalgo México

Numerical simulations of nonlinear interaction of space charge waves in microwave and millimeter wave range in n-InN films have been carried out. A micro- and millimeter-waves frequency conversion using the negative differential conductivity phenomenon is carried out when the harmonics of the input signal are generated. An increment in the amplification is observed in n-InN films at essentially at high-frequencies f < 450 GHz, when compared with n-GaAs films f < 44 GHz. This work provides a way to achieve a frequency conversion and amplification of micro- and millimeter-waves.

关键词： Space Charge Waves InN Film Negative Differential Conductivity

FUNCTIONAL PROTOTYPING OF SPECIAL PURPOSE MACHINES USING HARDWARE-IN-THE-LOOP SIMULATION

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FUNCTIONAL PROTOTYPING OF SPECIAL PURPOSE MACHINES USING HAR...

An assessment of African lion Panthera leo sociality via social network analysis： prerelease monitoring for an ex situ reintroduction program

2006年中国机械工程学会年会暨中国工程院机械与运载工...

作者： A.abel ITI GmbH Werbegasse. C/2D-09116 DresdenGermany

As a result of the complexity of special purpose machines many problems arise because of the multiplicity of interacting machine components. Before the assembly of the machine, some of the problems ca

关键词： rapid prototyping hardware-in-the- loop parallel kinematics e-manufacturing

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Current Zoology 2017年第3期63卷 301-311页

作者： Emma J. DUNSTON Jackie abel Rebecca E. DOYLE Jacqui KIRK Victoria B. HILLEY Andrew FORSYTH Emma JENKINS Rafael FREIRE School of Animal and Veterinary Sciences Charles Sturt University Wagga Wagga NSW 2678 Australia Social and Conservation Psycology Coventry University Coventry CV1 5FB UK African Lion & Environmental Research Trust Melrose Farm Livingstone 23345 Zambia Animal Welfare Science Centre The University of Melbourne Parkville Victoria 3010 Australia African Lion & Environmental Research Trust Antelope Park Gweru Midlands Zimbabwe Siyafunda The Greater Makalali Private Game Reserve Harmony 27 Hoedspruit 0895 South Africa

The wild population of the African lionPanthera leocontinues to decline, requiring alternate conservation programs to be considered. One such program is ex situ reintroduction. Prior to release, long-term monitoring and assessment of behavior is required to determine whether prides and coalitions behave naturally and are sufficiently adapted to a wild environment. Social network analysis (SNA) can be used to provide insight into how the pride as a whole and individuals within it, function. Our study was conducted upon 2 captive-origin prides who are part of an ex situ reintroduction program, and 1 wild pride of African lion. Social interactions were collected at all occurrence for each pride and categorized into greet, social grooming, play, and aggression. Betweenness centrality showed that offspring in each pride were central to the play network, whereas degree indicated that adults received (indegree) the greatest number of overall social interactions, and the adult males of each pride were least likely to initiate (outdegree) any interactions. Through the assessment of individual centrality and degree values, a social keystone adult female was identified for each pride. Social network results indicated that the 2 captive-origin prides had formed cohesive social units and possessed relationships and behaviors comparable with the wild pride for the studied behaviors. This study provided the first SNA comparison between captive-bred origin and a wild pride of lions, providing valuable information on individual and pride sociality, critical for determining the success of prides within an ex situ reintroduction program.

关键词：社会性网络分析狮子放归评估非洲监测野生种群

BRI Alluring for Latin American Countries——Interview with ECLAC Executive Secretary Alicia Bárcena

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China Today 2019年第3期68卷 45-47页

作者： abel ROSALES MICHAEL ZARATE 不详

THE UN Economic Commission for Latin America and the Caribbean(ECLAC)is one of the institutions that has done in-depth study on the relationship between China and the Latin American and Caribbean region over the last few *** mid-December,its executive secretary Alicia Bárcena visited Beijing to participate in an Advisory Council meeting of the Belt and Road Forum for International Cooperation(BRFIC),with the intention of finding new ways of better exploiting the initiative sponsored by the Chinese government to benefit countries related.

关键词： the Belt and Road Latin American Caribbean(ECLAC)

Phorbol myristate acetate suppresses breast cancer cell growth via down-regulation of P-Rex1 expression

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Protein & Cell 2016年第6期7卷 445-449页

作者： Chuu-Yun A.Wong Haihong Jiang Peter W.abel Margaret A.Scofield Yan Xie Taotao Wei Yaping Tu Department of Pharmacology Creighton University School of MedicineOmahaNE 68178USA National Laboratory of Biomacromolecules Institute of Biophysics Chinese Academy of SciencesBeijing 100101China

Dear Editor,P-Rex1 is a Rac-selective guanine nucleotide exchange factor （GEF） that is synergistically activated by G-protein coupled receptors and receptor tyrosine kinases （Welch et al., 2002）. We previously reported that aberrantly upreg- ulated P-Rex1 promotes prostate cancer metastasis by activating Racl signals （Qin et al., 2009）.

关键词： Breast Cancer Cell Growth Human Luminal Breast Cancer Breast Cancer Cell Cycle Suppress Breast Cancer Cell Growth Promote Prostate Cancer Metastasis

Arabidopsis Coordinates the Diurnal Regulation of Carbon Allocation and Growth across a Wide Range of Photoperiods

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Molecular Plant 2014年第1期7卷 137-155页

作者： Ronan Sulpice Anna Flis Alexander A. Ivakov Federico Apelt Nicole Krohn Beatrice Encke Christin abel Regina Feil John E. Lunn Mark Stitt Max Planck Institute of Molecular Plant Physiology Am Muehlenberg 1 14476 Potsdam-Golm Germany National University of Galway Plant Systems Biology Lab Plant and AgriBiosciences Research Centre Botany and Plant Science Galway Ireland

In short photoperiods, plants accumulate starch more rapidly in the light and degrade it more slowly at night, ensuring that their starch reserves last until dawn. To investigate the accompanying changes in the timing of growth, Arabidopsis was grown in a range of photoperiods and analyzed for rosette biomass, photosynthesis, respiration, ribosome abundance, polysome loading, starch, and over 40 metabolites at dawn and dusk. The data set was used to model growth rates in the daytime and night, and to identify metabolites that correlate with growth. Modeled growth rates and polysome loading were high in the daytime and at night in long photoperiods, but decreased at night in short photoperiods. Ribosome abundance was similar in all photoperiods. It is discussed how the amount of starch accumulated in the light period, the length of the night, and maintenance costs interact to constrain growth at night in short photoperiods, and alter the strategy for optimizing ribosome use. Significant correlations were found in the day- time and the night between growth rates and the levels of the sugar-signal trehalose 6-phosphate and the amino acid biosynthesis intermediate shikimate, identifying these metabolites as hubs in a network that coordinates growth with diurnal changes in the carbon supply.

关键词： Arabidopsis diurnal growth photoperiod ribosomes trehalose-6-phosphate starch

ASYMPTOTIC EXPANSION OF THE MULTIVARIATE BERNSTEIN POLYNOMIALS ON A SIMPLEX

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Analysis in Theory and Applications 2000年第3期16卷 85-93页

作者： abel Ulrich[]1 Ivan Mircea Fachhochschule Giessen-Firedbery University of Applied Sciences Fachbereich MNDWilhelm-Leuschner-Strasse 1361169 FriedbergGermany Department of Mathematics Technical University of Cluj-NapocaStr.C.Daicoviciu 153400 Cluj-NapocaRomania

In this note we study the local behaviour of the multi-variate Bernstein polynomials B, on the d-dimensional simplex S?R d. For function f admitting derivatives of sufficient high order in x∈S we derive the complete asymptotic expansion of Bnf as n tends to infinity. All the coefficients of n?1 that only depend on f and x are calculated explicitly. It turns out that combinatorial numbers play an important role. Par result generalize recent formulae due to R. Zhang in a way.

关键词： Asymptotic Expansion Asymptotic Approximation Bernstein Polynomial Asymptotic Relation Positive Linear Operator

资本结构决策分析——基于西非资本市场金融企业的对比分析

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资本结构决策分析——基于西非资本市场金融企业的对比分析

作者： AGO abel 宁波大学

学位级别：硕士

为了公司的实质性增长,公司的财务经理应当为公司计划最佳的资本结构。最佳的资本结构是能够将企业的市场价值最大化的资本结构。在实践中,决定最佳的资本结构是一项艰巨的任务,财务经理需恰当地履行此项职能,使公司的最终目标得以实现... 详细信息

为了公司的实质性增长,公司的财务经理应当为公司计划最佳的资本结构。最佳的资本结构是能够将企业的市场价值最大化的资本结构。在实践中,决定最佳的资本结构是一项艰巨的任务,财务经理需恰当地履行此项职能,使公司的最终目标得以实现。资本被认为是银行金融实力的根本,因为它可以通过吸收业务活动中不可预料的损失降低风险,并且在出现问题的时候使银行能够继续以一种良好而可行的方式运作,从而支撑起银行的运营。虽然目前已有一些关于金融企业资本结构的研究,但这些对金融企业却并无太大帮助。本论文的研究目的是要调查确定金融企业资本结构的决定性因素和金融企业如何优化其资本结构。为验证这些问题,本文选取了来自西非股票市场上不同地域的三家金融企业作为案例公司进行分析。研究显示,在决定其资本结构时,没有一家公司使用了现成的资本结构模型。资本结构的决定因素是多方面的。这些案例公司的资本结构显示非洲科特银行现在的资本结构被认为是尽可能接近最优,而非洲贝宁银行和非洲尼日利亚现在的资本结构并不是最优的,还有进一步改善的空间。

关键词：资本结构决策金融企业

Trend Analysis of Small Scale Commercial Sugarcane Production in Post Resettlement Areas of Mkwasine Zimbabwe, Using Hyper-Temporal Satellite Imagery

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Advances in Remote Sensing 2013年第1期2卷 29-34页

作者： Shingirirai Mutanga abel Ramoelo Tichatonga Gonah Africa Institute of South Africa Science and Technology Programme Pretoria South Africa Council for Scientific and Industrial Research (CSIR) Earth Observation Research Group Natural Resource and Environment Unit Pretoria South Africa Department of Water Affairs Hydrogeology Section Pretoria South Africa

This study used normalized difference vegetation index (NDVI) derived from Spot Vegetation images as a proxy for sugarcane growth and production model. Time series analysis was undertaken using the moving average computed in R Programming language to monitor sugarcane production after the inception of land reform in the Mkwasine Estate of Zimbabwe. Overall the findings showed a declining trend with a few years of improved production over the 11 year period under investigation. To attest the possible explanations for the observed trend the study related NDVI data with climate variables and considered non climate factors such as land tenure. The predicted yield estimates over the years correlated very well with rainfall. The study therefore envisaged that hyper-temporal satellite imagery can be used to monitor sugarcane production and enhance decision making for future policy direction.

关键词： Trend Analysis Spot Vegetation NDVI and Sugarcane

Unusual Scalp Process Revealing a Thyroid Cancer: “Illustrative Case”

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Open Journal of Modern Neurosurgery 2023年第4期13卷 183-188页

作者： Ibrahim Dao Ademayali Franck Auguste Hermann Ido Abdoulaye Adamou Babana Abdoulaye Sanou Ousmane Ouattara Souleymane Ouattara Astride Somda Haoua Alzouma Sylvain Delwendé Zabsonré abel Kabré Department of Neurosurgery Hospital Souro Sanou Higher institute of health sciences Nazi Boni University Bobo Dioulasso Burkina Faso Department of Pathology Hospital Tengandogo Joseph Ki-Zerbo University Ouagadougou Burkina Faso Department of Neurosurgery Maradi Reference Hospital Dan Dikko Dan Koulodo University Maradi Niger Department of Neurosurgery Hospital Yalgado Ouédraogo Joseph Ki-Zerbo University Ouagadougou Burkina Faso Department of Neurosurgery Niamey National Hospital Abdou Moumouni University Niamey Niger

Background: Thyroid cancers commonly display slow evolution with local and or regional extension. The classic presentation is a painless nodule of the thyroid region in a euthyroid patient. Sometimes, the nodule is discovered only on ultrasonography. Cervical lymph node is often seen in papillary thyroid cancer due to their propensity to invade lymph node. This means that follicular thyroid cancers are more insidious. Observation: We report a painless slow-growing lesion of the scalp revealing a skull metastasis of thyroid cancer. Despite catastrophic intraoperative bleeding, a total removal was achieved. Lessons: Thus, in addition to local and regional control in the management of thyroid cancers, distant metastasis should be surgically removed to provide the best chance to prolong the patient’s survival. Moreover, neurosurgeon must be prepared to deal with massive bleeding in skull metastasis of thyroid cancer.

关键词： Thyroid Cancer Follicular Thyroid Cancer Papillary Thyroid Cancer Subcutaneous Metastasis Surgery