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波谱学杂志 2020年第1期37卷 76-85页

作者：冯宗静杜亚平罗锋徐骏南开大学材料科学与工程学院/国家新材料研究院天津市稀土材料与应用重点实验室稀土与无机功能材料研究中心天津300350 IMdeA Nanoscience Faraday 9Ciudad Universitaria de CantoblancoMadrid 28049

层状稀土氢氧化物是一类新型的稀土功能材料,本文采用固体核磁共振(SSNMR)方法研究了同时具备离子交换能力和非线性光学特性的层状la(OH)2NO3化合物,探讨了通过四极核CPMG(QCPMG)脉冲序列和变频谱图采集获取超宽^139la SSNMR谱图的方法... 详细信息

层状稀土氢氧化物是一类新型的稀土功能材料,本文采用固体核磁共振(SSNMR)方法研究了同时具备离子交换能力和非线性光学特性的层状la(OH)2NO3化合物,探讨了通过四极核CPMG(QCPMG)脉冲序列和变频谱图采集获取超宽^139la SSNMR谱图的方法,并描述了适用于此类实验的滤波方程和谱图重建方法.重建谱图同时包含四极核中心跃迁和卫星跃迁信息,本文使用QUEST软件对超宽^139la NMR谱图进行了模拟,获取的四极耦合常数CQ和非对称因子ηQ均与CASTEP密度泛函理论计算值高度吻合.SSNMR实验结果证实层状la(OH)2NO3化合物属于非中心对称结构(P21),解决了对其结构长期以来存在的争论.

关键词： ^139la固体核磁共振超宽核磁共振波谱四极核 QCPMG脉冲层状化合物

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Concentrating Solar Power in Europe, the Middle East and North Africa： Achieving Its Potential

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Journal of Energy and Power Engineering 2013年第2期7卷 219-228页

作者： Robert Pitz-Paai Amr Amin Marc Bettzuge Philip Eames Fabrizio Fabrizi Gilles Flamant Fransisco Garcia Novo John Holmes Avi Kribus Harry van der laan Cayetano Lopez Panos Papagiannakopoulos Erik Pihl Paul Smith Hermann-Josef Wagner German Aerospace Center (DLR) Institute of Solar Research Koln 51147 Germany Faculty of Engineering Helwan University Giza 12211 Egypt Institute of Energy Economics (EW1) University of Cologne Cologne D-50923 Germany School of Electronic Electrical and Systems Engineering Loughborough University Loughborough LE11 3TU UK Italian National Agency for New Technologies Energy and Sustainable Economic Development (ENEA) Solar ThermodynamicLaboratory Rome 00123 Italy Procedes Materiaux et Energie Solaire (PROMES) Centre National de la Recherche Scientifique (CNRS) Font Romeu Odeillo66120 France Faculty of Biology University of Seville Seville 41004 Spain European Academies Science Advisory Council (EASA C) Leopoldina Halle 06019 Germany Faculty of Engineering School of Mechanical Engineering Tel Aviv University Tel Aviv 69978 Israel Universities of Leiden and Utrecht TC Utrecht 3508 Netherlands centro de Investigaciones Energeticas Medioambientales y Tecnologicas (CIEMAT) Madrid 40-28040 Spain department of Chemistry University of Crete Heraklion 710 03 Crete Greece department of Energy and Environment Chalmers University of Technology Goteborg SE-412 96 Sweden Electricity Research Centre Engineering & Materials Science Centre University College Dublin Dublin 4 Ireland department of Mechanical Engineering Ruhr-Universitat Bochum Bochum 44780 Germany

CSP (concentrating solar power) is a commercially available renewable energy technology capable of harnessing the immense solar resource in southern Europe, the MENA region (Middle East and North Africa), and elsewhere. This paper summarises the findings of a study by the European Academies Science Advisory Council which has examined the current status and development challenges of CSP, and consequently has evaluated the potential contribution of CSP in Europe and the MENA region to 2050. It identifies the actions that will be required by scientists, engineers, policy makers, politicians, business and investors alike, to enable this vast solar resource to make a major contribution to establishing a sustainable energy system. The study concludes that cost reductions of 50％-60％ in CSP electricity may reasonably be expected in the next 10-15 years, enabling the technology to be cost competitive with fossil-fired power generation at some point between 2020 and 2030. Incorporation of storage delivers added value in enabling CSP to deliver dispatchable power. Incentive schemes will be needed in Europe and MENA countries to enable this point to be achieved. Such schemes should reflect the true value of electricity to the grid, effectively drive research and development, and ensure transparency of performance and cost data.

关键词：北非地区太阳能发电中东欧洲聚光可再生能源技术太阳能资源技术成本

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Mobilizing Crop Biodiversity

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Molecular Plant 2020年第10期13卷 1341-1344页

作者： Susan McCouch Zahra Katy Navabi Michael Abberton Noelle L.Anglin Rosa Lia Barbieri Michael Baum Kirstin Bett Helen Booker Gerald L.Brown Glenn J.Bryan Luigi Cattivelli David Charest Kellye Eversole Marcelo Freitas Kioumars Ghamkhar Dario Grattipaglia Robert Henry Maria Cleria Valadares Inglis Tofazzal Islam Zakaria Kehel Paul J.Kersey Graham J.King Stephen Kresovich Emily Marden Sean Mayes Marie Noelle Ndjiondjiop Henry T.Nguyen Samuel Rezende Paiva Roberto Papa Peter W.B.Phillips Awais Rasheed Christopher Richards Mathieu Flouard Maria Jose Amstalden Sampaio Uwe Scholz Paul D.Shaw Brad Sherman S.Evan Staton Nils Stein Jan Svensson Mark Tester Jose Francisco Montenegro Valls Rajeev Varshney Stephen Visscher Eric von Wettberg Robbie Waugh Peter Wenzl Loren H.Rieseberg Plant Breeding and Genetics School of Integrated Plant SciencesCornell UniversityIthacaNY14853USA DivSeek Global Institute for Food Security110 Gymnasium PlaceUniversity of SaskatchewanSaskatoonSKS7N 0W9Canada lnternational Institute of Tropical Agriculture(IITA) PMB 5320Oyo RdIbadanNigeria International Potato Center(CIP)1895 Avenida la Molina Lima Peru 12Lima 15023Peru Embrapa Genetic Resources and Biotechnology Parque Estacjao BiologicaFinal Av W5 NorteCaixa Postal 0237270770-917-Brasilia DFBrazil International Center for Agricultural Research in the Dry Areas(I CAR DA) Station Exp.INRA-Quich.Rue Hafiane Cherkaoui.Agdal.Rabat-Instituts10111RabatMorocco department of Plant Sciences University of Saskatchewan51 Campus Dr.SaskatoonSK S7N 5A8Canada department of Plant Agriculture University of GuelphRm 316Crop Science Bldg50 Stone Rd EGuelphON N1G 2W1Canada Genome Prairie 111 Research DriveSuite 101SaskatoonSKS7N 3R2Canada The James Hutt on Institute Errol RoadInvergowrieDundeeDD25DAUK CREA Research Centre for Genomics and Bioinformaticsvia San Protaso 302Fiorenzuola d'Arda29017Italy Genome British Columbia 400-575 West 8th AvenueVancouverBCV5Z 0C4Canada International Wheat Genome Sequencing Consortium 2841 NE Marywood CtLee's SummitMO.64086USA Forage Science Grasslands Research CentreAgResearchPalmerston North4410New Zealand Queensla nd Alliance for Agriculture and Food Inn ovation University of QueenslandBrisbaneQLD 4072Australia Institute of Biotechnology and Genetic Engineering(IBGE) Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur 1706Bangladesh Southern Cross University PO Box 157LismoreNSW 2480Australia Royal Botanic Gardens KewRichmondSurreyTW93AEUK Feed the Future Innovation lab for Crop Improvement 431 Weill HallCornell UniversityIthacaNY14853USA department of Botany and Biodiversity Research Centre University of British ColumbiaVancouverBC V6R 2A5Canada Crops For the Future(UK)CIC 76-80 Baddow Road ChelmsfordEs

Over the past 70 years,the world has witnessed extraordinary growth in crop productivity,enabled by a suite of technological advances,including higher yielding crop varieties,improved farm management,synthetic agrochemicals,and agricultural *** this"Green Revolution"intensified crop production,and is credited with reducing famine and malnutrition,its benefits were accompanied by several undesirable collateral effects(Pingali,2012).These include a narrowing of agricultural biodiversity,stemming from increased monoculture and greater reliance on a smaller number of crops and crop varieties for the majority of our *** reduction in diversity has created vulnerabilities to pest and disease epidemics,climate variation,and ultimately to human health(Harlan,1972).

关键词： intensified crops agricultural

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