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Molecular Plant 2009年第2期2卷 270-283页

作者： M. Esther Perez-Perez Eugenio martin-Figueroa Francisco j. Florencio Instituto de Bioquimica Vegetal y Fotosintesis Universidad de Sevilla-CSIC Avda Americo Vespucio 49 41092-Sevilla Spain

The expression of the genes encoding the ferredoxin-thioredoxin system including the ferredoxin-thioredoxin reductase （FTR） genes ftrC and ftrV and the four different thioredoxin genes trxA （m-type; sir0623）, trxB （x-type; sir1139）, trxC （sll1057） and trxQ （y-type; sir0233） of the cyanobacterium Synechocystis sp. PCC 6803 has been studied according to changes in the photosynthetic conditions. Experiments of light-dark transition indicate that the expression of all these genes except trxQ decreases in the dark in the absence of glucose in the growth medium. The use of two electron transport inhibitors, 3-（3,4-dichlorophenyl）-1,1-dimethylurea （DCMU） and 2,5-dibromo-3-methyl-6-isopropyl-p- benzoquinone （DBMIB）, reveals a differential effect on thioredoxin genes expression being trxC and trxQ almost unaffected, whereas trxA, trxB, and the ftr genes are down-regulated. In the presence of glucose, DCMU does not affect gene expression but DBMIB still does. Analysis of the single TrxB or TrxQ and the double TrxB TrxQ Synechocystis mutant strains reveal different functions for each of these thioredoxins under different growth conditions. Finally, a Synechocystis strain was generated containing a mutated version of TrxB （TrxBC34S）, which was used to identify the potential in-vivo targets of this thioredoxin by a proteomic analysis.

关键词： Cyanobacteria photosynthetic electron transport Synechocystis oxidative stress thioredoxin.

Piecewise linear detection for direct superposition modulation

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Digital Communications and Networks 2018年第2期4卷 98-105页

作者： martin Damrath Peter Adam Hoeher Gilbert j.M. Forkel Institute of Electrical and Information Engineering Faculty of Engineering University of Kiel Kaiserstr. 2 24143 Kiel Germany

Considering high-order digital modulation schemes, the bottleneck in consumer products is the detector rather than the modulator. The complexity of the optimal a posteriori probability （APP） detector increases exponentially with respect to the number of modulated bits per data symbol. Thus, it is necessary to develop low-complexity detection algorithms with an APP-like performance, especially when performing iterative detection, for example in conjunction with bit interleaved coded modulation. We show that a special case of superposition modulation, dubbed Direct Superposition Modulation （DSM）, is particularly suitable for complexity reduction at the receiver side. As opposed to square QAM, DSM achieves capacity without active signal shaping. The main contribution is a low-cost detection algorithm for DSM, which enables iterative detection by taking a priori information into account. This algorithm exploits the approximate piecewise linear behavior of the soft outputs of an APP detector over the entire range of detector input values. A theoretical analysis and simulation results demonstrate that at least max-log APP performance can be reached, while the complexity is significantly reduced compared to classical APP detection.

关键词： Digital modulation Demodulation Detection algorithms Linear approximation

Solving surface plasmon resonances and near field in metallic nanostructures:Green’s matrix method and its applications

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Chinese Science Bulletin 2010年第24期55卷 2608-2617页

作者： GU Ying LI jia martin Olivier j F GONG QiHuang State Key Laboratory for Mesoscopic Physics Department of Physics Peking University Beijing 100871 China Nanophotonics and Metrology Laboratory Swiss Federal Institute of Technology Lausanne (EPFL) CH-1015 Lausanne Switzerland

With the development of nanotechnology,many new optical phenomena in nanoscale have been *** the coupling of optical waves and collective oscillations of free electrons in metallic nanostructures,surface plasmon polaritons can be excited accompanying a strong near field enhancement that decays in a subwavelength scale,which have potential applications in the surface-enhanced Raman scattering,biosensor,optical communication,solar cells,and nonlinear optical frequency *** the present article,we review the Green's matrix method for solving the surface plasmon resonances and near field in arbitrarily shaped nanostructures and in binary metallic *** this method,we design the plasmonic nanostructures whose resonances are tunable from the visible to near-infrared,study the interplay of plasmon resonances,and propose a new way to control plasmonic resonances in binary metallic nanostructures.

关键词：表面等离子体共振纳米结构二元金属矩阵方法近场应用表面增强拉曼散射表面等离子激元

The Early-Middle Pleistocene Transition： characterization and proposed guide for the defining boundary

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Episodes 2008年第2期31卷 255-259页

作者： martin j. Head Brad Pillans Sarah A. Farquhar Department of Earth Sciences Brock University St Catharines Ontario L2S 3A1 Canada. Research School of Earth Sciences The Australian National University Canberra ACT 0200 Australia. Cambridge Quaternary Department of Geography University of Cambridge Downing Place Cambridge CB2 3EN United Kingdom.

The mid-Pleistocene transition （MPT, c. 1.2 to 0.5 Ma） records fundamental changes in Earth＇s climate state, where low-amplitude 41-kyr obliquity-dominated cycles gave way progressively to the high-amplitude, quasiperiodic （c. 100-kyr） fluctuations that characterize the later Pleistocene and Holocene. We use wavelet analysis on the LR04 δ^l8O benthic foraminiferal stack to confirm low-frequency power as early as 1.25-1.20 Ma, determine the persistence of obliquity-dominated cyclicity through and beyond the MPT, and reveal new levels of complexity in climate evolution.

关键词：地球气候状态洪积世振幅

Symbol detection based on Voronoi surfaces with emphasis on superposition modulation

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Digital Communications and Networks 2017年第3期3卷 141-149页

作者： martin Damrath Peter Adam Hoeher Gilbert j.M. Forkel Institute of Electrical and Information Engineering Faculty of Engineering University of Kiel Kaiserstr. 2 24143 Kiel Germany

A challenging task when applying high-order digital modulation schemes is the complexity of the detector. Particularly, the complexity of the optimal a posteriori probability （APP） detector increases exponentially with respect to the number of bits per data symbol. This statement is also true for the Max-Log-APP detector, which is a common simplification of the APP detector. Thus it is important to design new detection algorithms which combine a sufficient performance with low complexity. In this contribution, a detection algorithm for two- dimensional digital modulation schemes which cannot be split-up into real and imaginary parts （like phase shift keying and phase-shifted snperposition modulation （PSM）） is proposed with emphasis on PSM with equal power allocation. This algorithm exploits the relationship between Max-Log-APP detection and a Voronoi diagram to determine planar surfaces of the soft outputs over the entire range of detector input values. As opposed to state-of-the-art detectors based on Voronoi surfaces, a priori information is taken into account, enabling iterative processing. Since the algorithm achieves Max-Log-APP performance, even in the presence of a priori information, this implies a great potential for complexity reduction compared to the classical APP detection.

关键词： Digital modulation Demodulation Detection algorithms Linear approximation

Mapping mountain areas: learning from Global, European and Norwegian perspectives

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journal of Mountain Science 2019年第1期16卷 1-15页

作者： martin F.PRICE Tor ARNESEN Erik GL?ERSEN Marc j.METZGER Centre for Mountain Studies Perth College University of the Highlands and Islands Mountain Research Programme Eastern Norway Research Institute Spatial Foresight Territorial Policy Support and Research Research Institute of Geography and the Lived Environment School of GeoSciences University of Edinburgh

Defining the spatial extent of mountain areas has long been a challenge. In the present century, the availability of digital elevation models(DEMs) incorporated into geographic information systems(GIS) has allowed the definition of mountain areas based on topographic and other criteria. This paper presents the various delineations of mountains that have been prepared at three scales – global, regional(Europe), and national – and explores the reasons and processes leading to these delineations, and how they have been used. A detailed case study is then presented for Norway. Overall, two types of approaches to mapping mountains have been taken: first, considering mountains per se, based on elevation and/or topography; second, considering them among other categories, e.g., landforms or biogeographical, environmental or landscape zones. All attempts to map mountain areas derive essentially from the objectives of those commissioning and/or undertaking the work; a unitary definition remains unlikely.

关键词： Mountains Mapping Geographic information systems Europe Norway Topography

Lowest-lying spin-1/2 and spin-3/2 baryon magnetic moments in chiral perturbation theory

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Chinese Physics C 2010年第9期34卷 1307-1311页

作者：耿立升 j.martin-Camalich L.Alvarez-Ruso M.j.Vicente-Vacas Departamento de Física Teórica and IFIC Universidad de Valencia-CSIC Centro de Física Computacional Departamento de FísicaUniversidade de Coimbra

We review some recent progress in our understanding of the lowest-lying spin-1/2 and spin-3/2 baryon magnetic moments （MMs） in terms of Chiral Perturbation Theory （ChPT）.In particular,we show that at next-to-leading-order ChPT can describe the MMs of the octet baryons quite *** also make predictions for the decuplet MMs at the same chiral *** them,the MMs of the Δ＋＋ and Δ ＋ are found to agree well with data within the experimental uncertainties.

关键词： magnetic moments octet baryons decuplet baryons chiral perturbation theory

Vectorial adaptive optics

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eLight 2023年第1期3卷 35-44页

作者： Chao He jacopo Antonello martin j.Booth Department of Engineering Science University of OxfordParks RoadOxford OX13PJUnited Kingdom

Adaptive optics normally concerns the feedback correction of phase *** correction has been of benefit in various optical systems,with applications ranging in scale from astronomical telescopes to super-resolution *** we extend this powerful tool into the vectorial domain,encompassing higher-dimensional feedback correction of both polarisation and *** technique is termed vectorial adaptive optics(V-AO).We show that V-AO can be implemented using sensor feedback,indirectly using sensorless AO,or in hybrid form combining aspects of *** validate improvements in both vector field state and the focal quality of an optical system,through correction for commonplace vectorial aberration sources,ranging from objective lenses to biological *** technique pushes the boundaries of traditional scalar beam shaping by providing feedback control of extra vectorial degrees of *** paves the way for next generation AO functionality by manipulating the complex vectorial field.

关键词： field optics correction

Non-invasive Angiographic-based Fractional Flow Reserve:Technical Development,Clinical Implications,and Future Perspectives

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当代医学科学(英文) 2023年第3期43卷 423-433页

作者： joyce Peper Michiel L.Bots Tim Leiner martin j.Swaans Department of Cardiology St.Antonius HospitalNieuwegein 3435 CMThe Netherlands Department of Radiology University Medical Center UtrechtUtrecht 3508 GAThe Netherlands julius Center for Health Sciences and Primary Care University Medical Center UtrechtUtrecht 3584 CGThe Netherlands

New non-and less-invasive techniques have been developed to overcome the procedural and operator related burden of the fractional flow reserve(FFR)for the assessment of potentially significant stenosis in the coronary *** FFR-techniques can obviate the need for the additional flow or pressure wires as used for FFR *** review provides an overview of the developments and validation of the virtual FFR-algorithms,states the challenges,discusses the upcoming clinical trials,and postulates the future role of virtual FFR in the clinical practice.

关键词： coronary artery disease quantitative flow ratio fractional flow reserve diagnostic accuracy physiology guided percutaneous coronary intervention

Predicting june Mean Rainfall in the Middle/Lower Yangtze River Basin

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Advances in Atmospheric Sciences 2020年第1期37卷 29-41页

作者： Gill M.martin Nick j.DUNSTONE Adam A.SCAIFE Philip E.BETT Met Office Exeter

We demonstrate that there is significant skill in the GloSea5 operational seasonal forecasting system for predicting june mean rainfall in the middle/lower Yangtze River basin up to four months in *** of the rainfall in this region during june is contributed by the mei-yu rain *** find that similar skill exists for predicting the East Asian summer monsoon index(EASMI)on monthly time scales,and that the latter could be used as a proxy to predict the regional ***,there appears to be little to be gained from using the predicted EASMI as a proxy for regional rainfall on monthly time scales compared with predicting the rainfall *** interannual variability of the june mean rainfall is affected by synoptic and intraseasonal variations,which may be inherently unpredictable on the seasonal forecasting time scale,the major influence of equatorial Pacific sea surface temperatures from the preceding winter on the june mean rainfall is captured by the model through their influence on the western North Pacific subtropical *** ability to predict the june mean rainfall in the middle and lower Yangtze River basin at a lead time of up to 4 months suggests the potential for providing early information to contingency planners on the availability of water during the summer season.

关键词： forecast skill EASMI monthly mean rainfall East Asian summer monsoon Yangtze River basin