proceedings of the national academy of sciences of the united states of america。
2008年的影响因子为9.38,2009年影响因子为9.432, 2010年影响因子为9.771。
《美国科学院院报》(PNAS)是与Nature、Science齐名,被引用次数最多的综合学科文献之一,周刊。自1914年创刊至今,PNAS提供具有高水平的前沿研究报告、学术评论、学科回顾及前瞻、学术论文以及美国国PNAS:美国科学院院报。ProceedingsoftheNationalAcademyofSciencesoftheUnitedStatesofAmerica(ISSN:0027-8424。它作为一种权威综合性科技期刊,是为大家所熟知的。 PNAS收录的文献涵盖生物、物理和社会科学,2008年的影响因子为9.38,2009年影响因子为9.432。在SCI综合科学类排名第三位,因而已成为全球科研人员不可缺少的科研资料。 二:PNAS的投稿 PNAS的稿源有三类(TrackI,II,III)。细心的读者会发现PNAS文章在作者通讯地址的下方都会有一行以“Communicatedby...”、“Editedby...”或“Contributedby...”字样开头的文字。这是区分三类稿件的最直接方式。 其中“CommunicatedbyXXX”属于第一类稿件(TrackI),这类文章通常是由作者交与一个美国科学院院士(含外籍院士)交流,然后该院士再向PNAS推荐发表,这个XXX就是院士的大名。在推荐之前,该院士需要请两位论文相关研究领域内的专家进行审稿,并像所有的编辑部编辑一样处理审稿人与作者之间的联系,包括将审稿意见反馈给作者和将作者的回复、辩驳以及修改稿再返回给审稿人。按PNAS规定是不能将审稿人的身份透漏给作者的,但我们知道这通常是很难做到的。审稿结束之后院士必须将通过的稿件以及所有审稿人与作者之间联系的记录一起作为推荐材料交到编辑部,最终接收与否由编辑部决定。相比较与Nature、Science,国内还是又不少好的研究结果会发在PNAS上的,其中大都是生物类的文章,谈家桢老先生作为美国科学院外籍院士就曾经推荐过不少国内的文章。此类文章每位院士每年最多只能推荐2篇。 第二种途径是大家所熟知的自由投稿方式,但与其它杂志还是略有不同的。投稿时作者需要推荐3个编委,3个NAS院士和5个审稿人。杂志社收到稿件后,先由编委阅读并定性稿件是否属于前10%文章,这一关大约会有2/3的文章直接不送审而被拒掉。然后编辑部会给挑剩下的1/3文章指定一个NAS院士作为member-editor,这个院士也有决定文章是否值得送审的权利,通过之后就会找审稿人评审。接下来程序跟其它大多数杂志雷同,这一关会再拒掉一半,剩下的1/2,也就是整个TrackII途径稿件的1/6会被幸运录用。这个院士editor是何许人只有等到文章被接收并发表才会为作者所知晓。据PNAS网站说该类投稿占所有稿件的80%左右,但录用却只占40%。 第三类稿源属院士自己署名的文章(Contributedby)。此类稿件与TrackI的不同之处在于院士直接作为作者之一邀请2位审稿人给与评审意见并作修改,最后所有记录一并交于编委,并由编辑部决定录用与否。每位院士此类文章不得超过4篇/年。 三:投稿策略: 从上面的介绍看来PNAS沿用了早期学术论文发表的一些策略,即一些大牛尤其是诺奖获得者享有发表文章的优先权,不仅如此,其拥有的学术权威和声望也可以让其推荐的文章分量加重,从而获得发表的机会。以这些美国科学院院士的学识和眼力,他们投稿或推荐的文章应该算是上乘之作。但也不尽然。 一些学术界前辈的学术成就确实让人高山仰止,我们不盲目反对权威,但历史告诉我们绝对权威的存在不是什么好事。依我阅读文献的经历,PNAS文章看的多了,反而对PNAS越来越不感冒了,因为我发现我的研究领域内发表在该刊上的很多院士的文章往往并不特别突出,至少在我看来并没有给人眼前一亮、耳目一新的感觉,有些甚至是滥竽充数。说到这一点,我想跟PNAS这种特殊的稿件处理策略或许不无联系。院士可以通过TrackI和II投稿和处理审稿,这之间难免会出现猫腻。虽然PNAS对此两种途径审稿人的选择有要求,但不难想象院士们自己找审稿人还会给自己惹麻烦吗?熟人是必须的,熟人不添麻烦也是必须的,除了来点’a’改成’an’式的小意见,自然是溢美之词,尽数奉上,嗯嗯哈哈,一团和气。这样一来文章自然达不到水平,与TrakcII文章相去甚远了。情况大体就是这么个情况。 大多数院士会选择用满自己的4次投稿机会和2次推荐机会,这些文章是不是都被接收了呢?用上面提到的几个数据做个简单的计算吧:PNAS每期文章数大约在80-100篇,以100篇记,TrackII接收文章数应该是40篇左右,接受率为1/6,那么投稿数是240,这个数占总投稿数的80%,那么总投稿数为300,TrackI和II投稿数和为60篇(20%),这正好是文章总数与TrackII接收数的差值,也就是说院士们的文章100%悉数被接收,即使被拒也是六十分之一二。100%有时候就是绝对的代名词,美国人眼里院士的地位和绝对权威可见一斑。有人开玩笑说PNAS是PassedoverbyNatureAndScience或PapersNotAcceptedinScience,不知道是赞还是骂。家科学学会学术动态的报道和出版。
他们奉献了自己的青春,研究出来很多科研成果,为我们的发展做出来巨大贡献
巧了,昨天发布的最新一期自然指数,中国历史性的第一次超过美国,这就意味着在目前世界上用于衡量一个国家科技水平的关键指数中,中国已经全部处于世界第一,注意是全部。包括诸如顶尖论文、优秀论文发表数量,顶级期刊收录的顶级论文数量,排名前一百的核心科技集群数量等。全部都是世界第一。此外值得注意的是,目前中美两国的科技实力加起来,超过世界上其他国家的总和。从科学门类而言,目前化学领域的自然指数,中国超过美国的两倍,物理学领域领先美国大约三分之一。我知道这个消息对很多人来讲可以称之为毁三观。但我再讲一些干货吧。今年初俄乌开战前,俄罗斯军工部门曾经评估如果遭遇技术封锁,中国能够提供90%的高科技技术。那么俄罗斯从中国得不到的那10%里面,就必然包含了中国自己也没有的技术和中国不愿意提供的技术。而《科技日报》2017年曾经列出了中国的35个“卡脖子”项目,再加上中国禁止出口的85个项目。俄罗斯人所指的那10%里面就必然包括了这120个项目,换言之俄罗斯至少存在1200个卡脖子项目。1200:35,这就是中国和俄罗斯在高科技自主能力上的差距。很多人一提到中国落后的领域就想起芯片,一提起中国领先的领域就想起高超。但实际上这两个都是几千上万个工业门类中的一部分。
2011年11月06日,liuxue86.com报道. 据北京国际在线报道,近日,爱尔兰国立都柏林大学(UCD)终身教授孙大文被增选为欧洲人文和自然科学院院士2011年新院士,这是欧洲华人科学家首次当选该院院士,孙大文也因此成为欧洲历史上首位成为两院院士的华人。 据了解,来自中国著名侨乡广东省潮州市的孙大文是中国华南理工大学校友,2010年年当选为爱尔兰皇家科学院院士。 他是国际著名食品科学与工程和生物系统工程专家,目前是都柏林大学食品和生物系统工程教授,领导着食品冷冻及计算机化食品技术研究团队,是爱尔兰有史以来 的第一位华人终身教授。他的主要研究包括制冷、冷冻及干燥过程和系统、食品质量与安全、生物过程模拟和优化以及计算机视觉识别技术等。尤其值得指出的是, 他在真空冷却熟肉制品、计算机视觉检测比萨饼质量、采用可食用膜技术实现果蔬货价期延长、利用超声波等物理场强化食品低温绿色加工等方面取得了令人瞩目世 界领先的开创性成就,得到国际同行的广泛认同。 创立于1988年的欧洲人文和自然科学院总部设在英国伦敦,是欧洲多国科学部长倡导、英国皇家学会等多个代表欧洲国家最高学术水平的国家科学院共同发起成立的国际科学组织,目前有院士2300人左右,包括38位诺贝尔奖获得者。 本文来源:(www.liuxue86.com)
徐扬生徐扬生教授,中国工程院院士,深圳先进院副院长。1982年及1984年分别获得浙江大学学士、硕士学位,1989年获得美国宾夕法尼亚大学博士学位。1989年至1997年在美国卡耐基梅隆大学任教,1997年起在香港中文大学任教,现为自动化与计算机辅助工程学讲座教授。同时他担任系主任(1997-2004),中国科学院深圳先进技术研究院副院长(2006至今),香港中文大学协理副校长(2008-2011)。现为香港中文大学副校长。陈国良中国科学院院士。1938年生于安徽颍上。1961毕业于西安交通大学无线电系。1973年起在中国科学技术大学任教。1981年至1983年,在美国普度大学作访问学者。2003年当选中国科学院院士。现任中国科学院深圳先进技术研究院先进计算与数字工程研究所首席科学家、中国科学技术大学教授、软件学院院长、国家高性能中心(合肥)主任。陈国良教授20多年来系统地开展了并行算法的理论、设计和应用的研究,提出了并行算法研究的一系列新观点和新方法,形成了“并行算法——并行计算机——并行编程”一体化研究体系。在非数值并行算法和高性能计算及其应用的研究方面做出了系统的创造性成就和重大贡献。他承担了国家级项目15项,已完成11项。发表论文170多篇(他和学生第一作者 110多篇),著作8册,他引540余次。获国家科技进步二等奖,国家级教学成果二等奖,省、部级科技进步一、二等奖共12项,11项排名第一。培养了一批从事算法研究的高级人才,已毕业博士生26名。学风正派,为人师表。汪正平现为美国国家工程院院士、中国工程院外籍院士;香港中文大学工程院院长、美国佐治亚理工学院董事教授,广东省“电子封装材料”团队负责人。其研究领域包括聚合物电子材料、电子、光子及微电子器件封装及互连材料、界面结合、纳米功能材料等。曾成功开创多种崭新材料,为半导体的封装技术带来革命性影响,多年来其研究成果丰硕,发表专业论文1000 余篇,申请60 多项美国专利。汪正平院士在先进电子封装材料领域的学术和产业界均享有颇高的声望,被誉为“现代半导体封装之父”。
发表论文600多篇,其中被SCI收录论文高达250多篇 (SCI收录):1. Da-Wen Sun, Inspecting Pizza Topping Percentage and Distribution by a Computer Vision Method, Journal of Food Engineering, 44 [4] (2000) 245-249.2. Da-Wen Sun, Comparison and Selection of EMC/ERH Isotherm Equations for Rice, Journal of Stored Products Research, 35 [3] (1999) 249-264.3. Da-Wen Sun, Comparative Study of the Performance of an Ejector Refrigeration Cycle Operating with Various Refrigerants, Energy Conversion and Management, 40 [8] (1999) 873-884.4. Da-Wen Sun, The Aqua-Ammonia Absorption System - an Alternative Option for Food Refrigeration, Journal of Food Processing & Preservation, 22 [5] (1998) 371-386.5. Da-Wen Sun, Selection of EMC/ERH Isotherm Equations for Shelled Corn Based on Fitting to Available Data, Drying Technology, 16 [3/5] (1998) 779-797.6. Da-Wen Sun, Evaluation of a Combined Ejector-Vapour Compression Refrigeration System, International Journal of Energy Research, 22 (1998) 333-342.7. Da-Wen Sun, Comparison of the Performances of NH3-H2O, NH3-LiNO3 and NH3-NaSCN Absorption Refrigeration Systems, Energy Conversion and Management, 39 [5/6] (1998) 357-368.8. Da-Wen Sun, Computer Simulation and Optimisation of Ammonia-Water Absorption Refrigeration Systems, Energy Sources, 19 [7] (1997) 677-690.9. Da-Wen Sun, Experimental Investigation of the Performance Characteristics of a Steam Jet Refrigeration System, Energy Sources, 19 [4] (1997) 349-367.10. Da-Wen Sun, Solar Powered Combined Ejector-Vapour Compression Cycle for Air Conditioning and Refrigeration, Energy Conversion and Management, 38 [5] (1997) 479-491.11. Da-Wen Sun, Thermodynamic Design Data and Optimum Design Maps for Absorption Refrigeration Systems, Applied Thermal Engineering, 17 [3] (1997) 211-221.12. Da-Wen Sun, Variable Geometry Ejectors and Their Applications in Ejector Refrigeration Systems, Energy, 21 [10] (1996) 919-929.13. Da-Wen Sun, Thermodynamic Analysis of Two-Stage Metal Hydride Heat Pumps with Different Operating Modes, Applied Energy, 54 [1] (1996) 29-47.14. Da-Wen Sun, New Methods for Evaluating the Performance of Metal Hydride Heat Pumps, Journal of the Institute of Energy, 68[476] (1995) 121-129.15. Da-Wen Sun, Designs of Metal Hydride Reactors, International Journal of Hydrogen Energy, 12 (1992) 945-949. (SCI收录):16. Da-Wen Sun and L. J. Wang, Development of a Mathematical Model for Vacuum Cooling of Cooked Meats, Journal of Food Engineering, 77 [3] (2006) 379-385.17. Da-Wen Sun and L. Y. Zheng, Vacuum Cooling Technology for the Agri-Food Industry: Past, Present and Future, in Da-Wen Sun and L. Y. Zheng (eds), “Progress in Bioproducts Processing and Food Safety”, special issue of Journal of Food Engineering, 77 [2] (2006) 203-214.18. Da-Wen Sun and L. J. Wang, Experimental Investigation of Performance of Vacuum Cooling for Commercial Large Cooked Meat Joints, Journal of Food Engineering, 61 [4] (2004) 527-532.19. Da-Wen Sun and C. J. Du, Segmentation of Complex Food Images by Stick Growing and Merging Algorithm, in Da-Wen Sun (ed) Computer Vision Applications in the Food Industry, special issue of Journal of Food Engineering, 61 [1] (2004) 17-26.20. Da-Wen Sun and B. Li, Microstructural Change of Potato Tissues Frozen by Ultrasound-Assisted Immersion Freezing, Journal of Food Engineering, 57 [4] (2003) 337 - 345.21. Da-Wen Sun and T. Brosnan, Pizza Quality Evaluation Using Computer Vision - Part 2. Pizza Topping Analysis, Journal of Food Engineering, 57 [1] (2003) 91-95.22. Da-Wen Sun and T. Brosnan, Pizza Quality Evaluation Using Computer Vision - Part 1. Pizza Base and Sauce Spread, Journal of Food Engineering, 57 [1] (2003) 81-89.23. Da-Wen Sun and L. J. Wang, Heat Transfer Characteristics of Cooked Meats Using Different Cooling Methods, International Journal of Refrigeration, 23 [7] (2000) 508-516.24. Da-Wen Sun and X. Zhu, Effect of Heat Transfer Direction on the Numerical Prediction of Beef Freezing Processes, Journal of Food Engineering, 42 [1] (1999) 45-50.25. Da-Wen Sun and Tadhg Brosnan, Extension of the Vase Life of Cut Daffodil Flowers by Rapid Vacuum Cooling, International Journal of Refrigeration, 22 [6] (1999) 472-478.26. Da-Wen Sun and C. Byrne, Selection of EMC/ERH Isotherm Equations for Rapeseed, Journal of Agricultural Engineering Research, 69 (1998) 307-315.27. Da-Wen Sun and J. L. Woods, Deep Bed Simulation of the Cooling of Stored Grain with Ambient Air: A Test Bed for Ventilation Control Strategies, Journal of Stored Products Research, 33 [4] (1997) 299-312.28. Da-Wen Sun and J. L. Woods, Simulation of the Heat and Moisture Transfer Process during Drying in Deep Grain Beds, Drying Technology, 15[10] (1997) 2479-2508.29. Da-Wen Sun and I. W. Eames, Optimisation of Ejector Geometry and its Application in Ejector Air Conditioning and Refrigeration Cycles, Emirates Journal for Engineering Research, 2 [1] (1997) 16-21.30. Da-Wen Sun, I. W. Eames and S. Aphornratana, Evaluation of a Novel Combined Ejector-Absorption Refrigeration Cycle, 1. Computer Simulation, International Journal of Refrigeration, 19[3] (1996) 172-180.31. Da-Wen Sun and I. W. Eames, Performance Characteristics of HCFC-123 Ejector Refrigeration Cycles, International Journal of Energy Research, 20[10] (1996) 871-885.32. Da-Wen Sun and I. W. Eames, Recent Developments in the Design Theories and Applications of Ejectors - A Review, Journal of the Institute of Energy, 68[475] (1995) 65-79.33. Da-Wen Sun and J. L. Woods, Low Temperature Moisture Transfer Characteristics of Barley: Thin Layer Models and Equilibrium Isotherms, Journal of Agricultural Engineering Research, 59 (1994) 273-283.34. Da-Wen Sun and J. L. Woods, Low Temperature Moisture Transfer Characteristics of Wheat During Thin Layer Drying, Transactions of the ASAE, 37 (1994) 1919-1926.35. Da-Wen Sun and J. L. Woods, The Selection of Sorption Isotherm Equations for Wheat Based on the Fitting of Available Data, Journal of Stored Products Research, 30 (1994) 27-43.36. Da-Wen Sun and J. L. Woods, The Moisture Content/Relative Humidity Equilibrium Relationship of Wheat - A Review, Drying Technology, 11 (1993) 1523-1551.37. Da-Wen Sun and Roy J. Crawford, Analysis of the Effects of Internal Heating and Cooling During the Rotational Moulding of Plastics, Polymer Engineering & Science, 33 (1993) 132-139.38. Da-Wen Sun and Roy J. Crawford, Computer Simulation of Rotational Moulding Heat Transfer Processes, Plastics, Rubber and Composites Processing and Applications, 19 (1993) 47-53.39. Da-Wen Sun, Manfred Groll and Ronald Werner, Selection of Alloys and Their Influence on The Operational Characteristics of a Two-Stage Metal Hydride Heat Transformer, Heat Recovery Systems & CHP, 12 (1992) 49-55.40. Da-Wen Sun and Song-Jiu Deng, Major Factors Affecting the Reaction Rate in Metal Hydride Beds, International Journal of Hydrogen Energy, 16 (1991) 751-754.41. Da-Wen Sun and Yu-Cheng Peng, A Practical Method to Design Hollow Profile Dies, Plastics, Rubber and Composites Processing and Applications 16 (1991) 109-114.42. Da-Wen Sun and Song-Jiu Deng, Theoretical Descriptions and Experimental Measurements on the Effective Thermal Conductivity in Metal Hydride Powder Beds, Journal of Less-Common Metals, 160 (1990) 387-395.43. Da-Wen Sun and Song-Jiu Deng, A Theoretical Model Predicting the Effective Thermal Conductivity in Powdered Metal Hydride Beds, International Journal of Hydrogen Energy, 15 (1990) 331-336.44. Da-Wen Sun and Song-Jiu Deng, Numerical Solution of the Two-Dimensional Non-Steady Heat and Mass Transfer Problem in Metal Hydride Beds, International Journal of Hydrogen Energy, 15 (1990) 807-816.45. Da-Wen Sun and Song-Jiu Deng, Study of the Heat and Mass Transfer Characteristics of Metal Hydride Beds: A Two-Dimensional Model, Journal of Less-Common Metals, 155 (1989) 271-279.46. Da-Wen Sun and Song-Jiu Deng, Study of the Heat and Mass Transfer Characteristics of Metal Hydride Beds, Journal of Less-Common Metals, 141 (1988) 37-43. (SCI收录):47. N. A. Valous, K. Drakakis and Da-Wen Sun, Detecting Fractal Power-law Long-range Dependence in Pre-sliced Cooked Pork Ham Surface Intensity Patterns Using Detrended Fluctuation Analysis, Meat Science, (2010) (in press).48. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Improving the Representation of Thermal Boundary Conditions of Livestock during CFD Modelling of the Indoor Environment, Computers and Electronics in Agriculture, (2010) (in press).49. S. Yu, Y. Ma and Da-Wen Sun, Effects of Freezing Rates on Starch Retrogradation and Textural Properties of Cooked Rice during Storage, LWT - Food Science and Technology, (2010) (in press).50. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, A Computational Fluid Dynamics Study of Air Mixing in a Naturally Ventilated Livestock Building with Different Porous Eave Opening Conditions, Biosystems Engineering, (2010) (in press).51. S. Yu, Y. Ma, L. Menager and Da-Wen Sun, Physicochemical Properties of Starch and Flour from Different Rice Cultivars, Food and Bioprocess Technology, (2010) (in press).52. P. Jackman, Da-Wen Sun, P. Allen, N. A. Valous, F. Mendoza1and P. Ward, Identification of Important Image Features for Pork and Turkey Ham Classification Using Colour and Wavelet Texture Features and Genetic Selection, Meat Science, 84 [4] (2010) 711–717.53. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Assessing the Ventilation Performance of A Naturally Ventilated Livestock Building with Different Eave Opening Conditions, Computers and Electronics in Agriculture, 71 [1] (2010) 7-21.54. N. A. Valous, F. Mendoza and Da-Wen Sun, Emerging Non-contact Imaging, Spectroscopic and Colorimetric Technologies for Quality Evaluation and Control of Hams: A Review, Trends in Food Science and Technology, 21 [1] (2010) 26-43.55. P. Jackman, Da-Wen Sun, P. Allen, K. Brandon and A.-M. White, Correlation of Consumer Assessment of Longissimus Dorsi Beef Palatability with Image Colour, Marbling and Surface Texture Features, Meat Science, 84 [3] (2010) 564–568.56. A. Iqbal, N. A. Valous, F. Mendoza, Da-Wen Sun and P. Allen, Classification of Pre-sliced Pork and Turkey Ham Qualities Based on Image Colour and Textural Features and Their Relationships with Consumer Responses, Meat Science, 84 [3] (2010) 455–465.57. N. A. Valous, F. Mendoza, Da-Wen Sun and Paul Allen, Supervised Neural Network Classification of Pre-sliced Cooked Pork Ham Images Using Quaternionic Singular Values, Meat Science, 84 [3] (2010) 422–430.58. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Optimising the Ventilation Configuration of Naturally Ventilated Livestock Buildings for Improved Indoor Environmental Homogeneity, Building and Environment, 45 [4] (2010) 983-995.59. N. A. Valous, Da-Wen Sun, P. Allen and F. Mendoza, The Use of Lacunarity for Visual Texture Characterization of Pre-Sliced Cooked Pork Ham Surface Intensities, Food Research International, 43 [1] (2010) 387–395.60. B. Wang, S. Y. Xu and Da-Wen Sun, Application of the Electronic Nose to the Identification of Different Milk Flavorings, Food Research International, 43 [1] (2010) 255–262.61. S. Yu, Y. Ma, T. Liu, L. Menager and Da-Wen Sun, Impact of Cooling Rates on the Staling Behavior of Cooked Rice during Storage, Journal of Food Engineering, 96 [3] (2010) 416-420.62. P. Jackman, Da-Wen Sun and P. Allen, Prediction of Beef Palatability from Colour, Marbling and Surface Texture Features of Longissimus Dorsi, Journal of Food Engineering, 96 [1] (2010) 151-165.63. F. Mendoza, N. A. Valous, Da-Wen Sun and Paul Allen, Characterization of Fat-Connective Tissue Size Distribution in Pre-sliced Pork Hams Using Multifractal Analysis, Meat Science, 83 [4] (2009) 713-722.64. S. Yu, Y. Ma and Da-Wen Sun, Impact of Amylose Content on Starch Retrogradation and Texture of Cooked Milled Rice during Storage, Journal of Cereal Science, 50 [2] (2009) 139-144.65. P. Jackman, Da-Wen Sun and P. Allen, Automatic Segmentation of Beef Longissimus Dorsi Muscle and Marbling by an Adaptable Algorithm, Meat Science, 83 [2] (2009) 187–194.66. P. Jackman, Da-Wen Sun and P. Allen, Comparison of Various Wavelet Texture Features to Predict Beef Palatability, Meat Science, 83 [1] (2009) 82–87.67. A. E. Delgado, L. Y. Zheng and Da-Wen Sun, Influence of Ultrasound on Freezing Rate of Immersion-frozen Apples, Food and Bioprocess Technology, 2 [3] (2009) 263–270.68. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Assessing the Ventilation Effectiveness of Naturally Ventilated Livestock Buildings under Wind Dominated Conditions Using Computational Fluid Dynamics, Biosystems Engineering, 103 [1] (2009) 78-99.69. P. Jackman, Da-Wen Sun and P. Allen, Comparison of the Predictive Power of Beef Surface Wavelet Texture Features at High and Low Magnification, Meat Science, 82 [3] (2009) 353-356.70. R. Zhao, E. Chen, M. Lin, Da-Wen Sun and B. Xu, Characteristics of Chamber Temperature Change during Vacuum Cooling, Journal of Food Process Engineering, 32 [2] (2009) 177-186.71. Y. Ma and Da-Wen Sun, Hardness of Cooked Rices as Affected by Varieties, Cooling Methods and Chill Storage, Journal of Food Process Engineering, 32 [2] (2009) 161-176.72. C. J. Du and Da-Wen Sun, Retrospective Shading Correction of Confocal Laser Scanning Microscopy Beef Images for Three-Dimensional Visualization, Food and Bioprocess Technology, 2 [2] (2009) 167-176.73. N. A. Valous, F. Mendoza, Da-Wen Sun and P. Allen, Texture Appearance Characterization of Pre-Sliced Pork Ham Images Using Fractal Metrics: Fourier Analysis Dimension and Lacunarity, Food Research International, 42 [3] (2009) 353-362.74. P. Jackman, Da-Wen Sun, C. J. Du and P. Allen, Prediction of Beef Eating Qualities from Colour, Marbling and Wavelet Surface Texture Features using Homogenous Carcass Treatment, Pattern Recognition, 42 [5] (2009) 751-763.75. T. Norton, A. Delgado, E. Hogan, P. Grace and Da-Wen Sun, Simulation of High Pressure Freezing Processes by Enthalpy Method, Journal of Food Engineering, 91 [2] (2009) 260-268.76. F. Mendoza, N. A. Valous, P. Allen, T. A. Kenny, P. Ward, and Da-Wen Sun, Analysis and Classification of Commercial Ham Slice Images Using Directional Fractal Dimension Features, Meat Science, 81 [2] (2009) 313-320.77. N. A. Valous, F. Mendoza, Da-Wen Sun and Paul Allen, Colour Calibration of a Laboratory Computer Vision System for Quality Evaluation of Pre-sliced Hams, Meat Science, 81 [1] (2009) 132-141.78. W. Wu, H. Zhang and Da-Wen Sun, Mathematical Simulation and Experimental Study of a Modified Zeolite 13X-Water Adsorption Refrigeration Module, Applied Thermal Engineering, 29 [4] (2009) 645-651.79. L. Drummond, Da-Wen Sun, C. T. Vila and A. G. M. Scannell, Application of Immersion Vacuum Cooling to Water-Cooked Beef Joints – Quality and Safety Assessment, LWT - Food Science and Technology, 42 [1] (2009) 332–337.80. F. Xu, W.-J. Yu, Da-Wen Sun, X.-Q. Xu and T.-C. Hua, Performance Comparison of Free and Immobilized Chicken Liver Esterase Inhibited by Four Different Pesticides, Journal of the Science of Food and Agriculture, 88 [14] (2008) 2538-2542.81. P. Jackman, Da-Wen Sun, C. J. Du, P. Allen and G. Downey, Prediction of Beef Eating Quality from Colour, Marbling and Wavelet Texture Features, Meat Science, 80 [4] (2008) 1273-1281.82. C. J. Du, Da-Wen Sun, P. Jackman and P. Allen, Development of a Hybrid Image Processing Algorithm for Automatic Evaluation of Intramuscular Fat Content in Beef M. Longissimus dorsi, Meat Science, 80 [4] (2008) 1231-1237.83. L. Drummond and Da-Wen Sun, Temperature Evolution and Mass Losses during Immersion Vacuum Cooling of Cooked Beef Joints – a Finite Difference Model, Meat Science, 80 [3] (2008) 885-891.84. L. Drummond and Da-Wen Sun, Immersion Vacuum Cooling of Cooked Beef - Safety and Process Considerations Regarding Beef Joint Size, Meat Science, 80 [3] (2008) 738-743.85. Y. Xu, T.-C. Hua, Da-Wen Sun and G.-Y. Zhou, Experimental Study and Analysis of Mechanical Properties of Frozen Rabbit Aorta by Fracture Mechanics Approach, Journal of Biomechanics, 41 [3] (2008) 649-655.86. Y. Ma, L. Lin and Da-Wen Sun, Preparation of High Fischer Ratio Oligopeptide by Proteolysis of Corn Gluten Meal, Czech Journal of Food Sciences, 26 [1] (2008) 31-40.87. C. J. Du and Da-Wen Sun, Multi-Classification of Pizza Using Computer Vision and Support Vector Machine, Journal of Food Engineering, 86 [2] (2008) 234–242.88. T. Norton and Da-Wen Sun, Recent Advances in the Use of High Pressure as an Effective Processing Technique in the Food Industry, Food and Bioprocess Technology, 1 [1] (2008) 2-34.89. Q. F. Cheng and Da-Wen Sun, Important Factors Affecting the Water Holding Capacity of Red Meat Products: A Review of Recent Research Advances, Critical Reviews in Food Science and Nutrition, 48 [1] (2008) 1–23.90. P. Barreiro, C. Zheng, Da-Wen Sun, N. Hernández-Sánchez, J. M. Pérez-Sánchez and J. Ruiz-Cabello, Non-Destructive Seed Detection in Mandarines: Comparison of Automatic Threshold Methods in FLASH and COMSPIRA MRIs, Postharvest Biology and Technology, 47 [2] (2008) 189–198.91. L. Guo, Y. Ma, Da-Wen Sun and P. Wang, Effects of Controlled Freezing-Point Storage at 0oC on Quality of Green Bean as Compared with Cold and Room-Temperature Storages, Journal of Food Engineering, 86 [1] (2008) 25-29.92. Z. W. Cui, L. J. Sun, W. Chen and Da-Wen Sun, Preparation of Dry Honey by Microwave-Vacuum Drying, Journal of Food Engineering, 84 [4] (2008) 582-590.93. D. Wu, Y. He, S. Feng, and Da-Wen Sun, Study on Infrared Spectroscopy Technique for Fast Measurement of Protein Content in Milk Powder Based on LS-SVM, Journal of Food Engineering, 84 [1] (2008) 124-131.94. Y. Xu, T.-C. Hua, Da-Wen Sun, G.-Y. Zhou and F. Xu, Effects of Freezing Rates and Dimethyl Sulphoxide Concentrations on Thermal Expansion of Rabbit Aorta during Freezing Phase Change as Measured by Thermo Mechanical Analysis, Journal of Biomechanics, 40 [14] (2007) 3201-3206.95. P. F. Yang, X. Wang, T.-C. Hua, Da-Wen Sun, Z. H. Chang and Y. L. Cao, Water Transport during Freezing of Human Dermal Fibroblast as Affected by Various Freezing Rates, Cell Preservation Technology, 5 [3] (2007) 137-143.96. C. J. Du and Da-Wen Sun, Food Image Segmentation Using an Improved Kernel Fuzzy C-Means Algorithm, Transactions of the ASABE, 50 [4] (2007) 1341-1348.97. X. Wang, T.-C. Hua, Da-Wen Sun, B. Liu, G. Yang and Y. Cao, Cryopreservation of Tissue-Engineered Dermal Replacement in Me2SO: Toxicity Study and Effects of Concentration and Cooling Rates on Cell Viability, Cryobiology, 55 [1] (2007) 60-65.98. Y. Li, S. Y. Xu and Da-Wen Sun, Preparation of Garlic Powder with High Allicin Content by Using Combined Microwave-Vacuum and Vacuum Drying as well as Microencapsulation, Journal of Food Engineering, 83 [1] (2007) 76-83.99. A. E. Delgado and Da-Wen Sun, Influence of Surface Water Activity on Freezing/Thawing Times and Weight Loss, Journal of Food Engineering, 83 [1] (2007) 23-30.100. T. Jeliński, C. J. Du, Da-Wen Sun and J. Fornal, Inspection of the Distribution and Amount of Ingredients in Pasteurized Cheese by Computer Vision, Journal of Food Engineering, 83 [1] (2007) 3-9.等约600篇.
孙大文,英文名:Da-Wen Sun,广东省潮州市人,国际著名华人食品科学家,欧洲人文和自然科学院(Academia Europaea)院士,爱尔兰皇家科学院院士,国际食品科学院院士,爱尔兰国立都柏林大学终身教授,是国际著名的生物系统工程和食品科学与工程方面的学术权威,国际上该领域最活跃、最具创造力、最有影响的学术带头人之一,在国际同行中享有极高的知名度。1982年在华南理工大学机械工程专业获学士学位,1985年获硕士学位,1988年获化学工程博士学位。1989年至1995年,分别在德国斯图加特大学,英国贝尔法斯特女王大学,纽卡斯尔大学和谢菲尔德大学任职。1995年起,受聘于爱尔兰国立都柏林大学(UCD),成为在爱尔兰第一个获得永久教职的华人,并且以最短的时间从讲师晋升为高级讲师、副教授和正教授。当前,孙大文博士是爱尔兰都柏林大学食品和生物系统工程教授,领导着食品冷冻及计算机化食品技术研究团队,是爱尔兰有史以来的第一位华人终身教授。他的主要研究包括制冷、冷冻及干燥过程和系统、食品质量与安全、生物过程模拟和优化以及计算机视觉识别技术等。尤其值得指出的是,他在真空冷却熟肉制品、计算机视觉检测比萨饼质量、采用可食用膜技术实现果蔬货价期延长等方面具有世界领先的开创性成就,得到了国内外媒体的广泛报导。他在世界上著名杂志和国际会议上发表了800多篇高水平论文,出版专著14部,其中超过400篇论文被SCI收录(H指数=65) 。他是英国皇家农业工程师学会会士(Fellow)和爱尔兰工程师学会会士(Fellow),同时他还兼任SCI和EI收录、2012年影响因子为4.115、全球全食品行业排名第六的《食品和生物加工技术》(Food and Bioprocess Technology,Springer)国际期刊总主编、《现代食品工程》(Contemporary Food Engineering,CRC Press / Taylor & Francis)系列丛书主编和多家SCI收录的国际期刊编委,华南理工大学、上海交通大学、浙江大学、中国农业大学、哈尔滨工业大学、江南大学、安徽省农业科学院等十几所高校和科研机构的顾问教授或客座教授。以及多次应邀出任大型国际学术会议大会主席、重要国际学术大会主旨演讲人和欧盟框架计划、美国自然科学基金、加拿大自然科学和工程研究委员会等特邀项目评委等多项重要国际职务。 由于他在世界食品工程领域所作的突出贡献和在该领域的领导地位,先后于2000年和2006年被素有农业工程界的“奥林匹克”之称的国际农业工程委员会(International Commission of Agricultural and Biosystems Engineering,CIGR)授予CIGR杰出奖,2007年被授予印度食品科学家及技术人员协会会士(AFST(I) Fellow Award)荣誉称号,2008年获CIGR成就奖,2010年被授予国际农业工程委员会会士(CIGR Fellow Award)荣誉称号,并于2004年被英国皇家机械工程师学会授予“食品工程师年度人物(Food Engineer of the Year Award)”大奖。2010年12月底,被全球32个国家的152家中文媒体共同评为“2010年全球海外华人社区十大新闻人物”。2013年3月,他获颁由凤凰卫视,中国新闻社等两岸三地富有影响力的十余家华文媒体共同评选的2012-2013世界因你而美丽——“影响世界华人大奖”,与诺贝尔文学奖得主莫言、神舟九号飞行乘组等获奖个人和团体同台领奖。2013年5月,他又荣获国际食品保护协会(IAFP)颁发的冷冻食品基金会冷冻研究奖(Frozen Food Foundation Freezing Research Award),成为美国本土以外首位获得该著名奖项的科学家。2015年6月,他又被授予国际工程与食品协会(International Association of Engineering and Food,IAEF)终身成就奖(IAEF LifetimeAchievement Award),这一奖项是为表彰世界上杰出工程师为食品工程贡献一生而设立的。 2010年,他当选为代表爱尔兰国家最高学术荣誉和成就巅峰的的爱尔兰皇家科学院(Royal Irish Academy)院士。时任中共中央政治局委员、中央书记处书记、中央组织部部长现任中华人民共和国副主席李源潮同志特委托中组部发去贺信表示祝贺,盛赞孙大文“为中华儿女争了光,”“为推动中国食品技术的发展,培养年轻人才,付出了大量心血,做出了重要贡献。”同年,他又当选为国际农业工程委员会即任主席,任期从2011年元月开始,并于2013年起接任主席,他成为国际农业工程委员会成立82年以来的首位华人主席。 2011年,他再获殊荣,被光荣增选为欧洲人文和自然科学院(Academia Europaea)院士,成为首次当选该院院士的欧洲华人科学家,同时也成为欧洲历史上首位拥有两院院士的华人。2012年,他又当选为国际食品科学院(IAFoST)院士,为全球共增选的22名院士中唯一来自爱尔兰的学者。根据汤森路透集团出版发行的基本科学指标(Essential Science Indicators)数据库有关全球农业科学家排名,在汇集和分析过去十年Web of Science所收录SCI论文系统的数据统计,全球共有四千多名科学家排名进入农业科学专业领域前1%的“被引用次数最多的科学家”(Most Cited Scientists),其中孙大文多年来一直名列前茅,位列第26名(2015.1),按“高被引论文(HIGHLYCITEDPAPERS)”排名,全球排名第一(2015.8) 。他是中国侨联特聘专家 ,国务院侨务办公室专家咨询委员会委员,广东院士联谊会常务理事。
2011年11月06日,liuxue86.com报道. 据北京国际在线报道,近日,爱尔兰国立都柏林大学(UCD)终身教授孙大文被增选为欧洲人文和自然科学院院士2011年新院士,这是欧洲华人科学家首次当选该院院士,孙大文也因此成为欧洲历史上首位成为两院院士的华人。 据了解,来自中国著名侨乡广东省潮州市的孙大文是中国华南理工大学校友,2010年年当选为爱尔兰皇家科学院院士。 他是国际著名食品科学与工程和生物系统工程专家,目前是都柏林大学食品和生物系统工程教授,领导着食品冷冻及计算机化食品技术研究团队,是爱尔兰有史以来 的第一位华人终身教授。他的主要研究包括制冷、冷冻及干燥过程和系统、食品质量与安全、生物过程模拟和优化以及计算机视觉识别技术等。尤其值得指出的是, 他在真空冷却熟肉制品、计算机视觉检测比萨饼质量、采用可食用膜技术实现果蔬货价期延长、利用超声波等物理场强化食品低温绿色加工等方面取得了令人瞩目世 界领先的开创性成就,得到国际同行的广泛认同。 创立于1988年的欧洲人文和自然科学院总部设在英国伦敦,是欧洲多国科学部长倡导、英国皇家学会等多个代表欧洲国家最高学术水平的国家科学院共同发起成立的国际科学组织,目前有院士2300人左右,包括38位诺贝尔奖获得者。 本文来源:(www.liuxue86.com)
发表论文600多篇,其中被SCI收录论文高达250多篇 (SCI收录):1. Da-Wen Sun, Inspecting Pizza Topping Percentage and Distribution by a Computer Vision Method, Journal of Food Engineering, 44 [4] (2000) 245-249.2. Da-Wen Sun, Comparison and Selection of EMC/ERH Isotherm Equations for Rice, Journal of Stored Products Research, 35 [3] (1999) 249-264.3. Da-Wen Sun, Comparative Study of the Performance of an Ejector Refrigeration Cycle Operating with Various Refrigerants, Energy Conversion and Management, 40 [8] (1999) 873-884.4. Da-Wen Sun, The Aqua-Ammonia Absorption System - an Alternative Option for Food Refrigeration, Journal of Food Processing & Preservation, 22 [5] (1998) 371-386.5. Da-Wen Sun, Selection of EMC/ERH Isotherm Equations for Shelled Corn Based on Fitting to Available Data, Drying Technology, 16 [3/5] (1998) 779-797.6. Da-Wen Sun, Evaluation of a Combined Ejector-Vapour Compression Refrigeration System, International Journal of Energy Research, 22 (1998) 333-342.7. Da-Wen Sun, Comparison of the Performances of NH3-H2O, NH3-LiNO3 and NH3-NaSCN Absorption Refrigeration Systems, Energy Conversion and Management, 39 [5/6] (1998) 357-368.8. Da-Wen Sun, Computer Simulation and Optimisation of Ammonia-Water Absorption Refrigeration Systems, Energy Sources, 19 [7] (1997) 677-690.9. Da-Wen Sun, Experimental Investigation of the Performance Characteristics of a Steam Jet Refrigeration System, Energy Sources, 19 [4] (1997) 349-367.10. Da-Wen Sun, Solar Powered Combined Ejector-Vapour Compression Cycle for Air Conditioning and Refrigeration, Energy Conversion and Management, 38 [5] (1997) 479-491.11. Da-Wen Sun, Thermodynamic Design Data and Optimum Design Maps for Absorption Refrigeration Systems, Applied Thermal Engineering, 17 [3] (1997) 211-221.12. Da-Wen Sun, Variable Geometry Ejectors and Their Applications in Ejector Refrigeration Systems, Energy, 21 [10] (1996) 919-929.13. Da-Wen Sun, Thermodynamic Analysis of Two-Stage Metal Hydride Heat Pumps with Different Operating Modes, Applied Energy, 54 [1] (1996) 29-47.14. Da-Wen Sun, New Methods for Evaluating the Performance of Metal Hydride Heat Pumps, Journal of the Institute of Energy, 68[476] (1995) 121-129.15. Da-Wen Sun, Designs of Metal Hydride Reactors, International Journal of Hydrogen Energy, 12 (1992) 945-949. (SCI收录):16. Da-Wen Sun and L. J. Wang, Development of a Mathematical Model for Vacuum Cooling of Cooked Meats, Journal of Food Engineering, 77 [3] (2006) 379-385.17. Da-Wen Sun and L. Y. Zheng, Vacuum Cooling Technology for the Agri-Food Industry: Past, Present and Future, in Da-Wen Sun and L. Y. Zheng (eds), “Progress in Bioproducts Processing and Food Safety”, special issue of Journal of Food Engineering, 77 [2] (2006) 203-214.18. Da-Wen Sun and L. J. Wang, Experimental Investigation of Performance of Vacuum Cooling for Commercial Large Cooked Meat Joints, Journal of Food Engineering, 61 [4] (2004) 527-532.19. Da-Wen Sun and C. J. Du, Segmentation of Complex Food Images by Stick Growing and Merging Algorithm, in Da-Wen Sun (ed) Computer Vision Applications in the Food Industry, special issue of Journal of Food Engineering, 61 [1] (2004) 17-26.20. Da-Wen Sun and B. Li, Microstructural Change of Potato Tissues Frozen by Ultrasound-Assisted Immersion Freezing, Journal of Food Engineering, 57 [4] (2003) 337 - 345.21. Da-Wen Sun and T. Brosnan, Pizza Quality Evaluation Using Computer Vision - Part 2. Pizza Topping Analysis, Journal of Food Engineering, 57 [1] (2003) 91-95.22. Da-Wen Sun and T. Brosnan, Pizza Quality Evaluation Using Computer Vision - Part 1. Pizza Base and Sauce Spread, Journal of Food Engineering, 57 [1] (2003) 81-89.23. Da-Wen Sun and L. J. Wang, Heat Transfer Characteristics of Cooked Meats Using Different Cooling Methods, International Journal of Refrigeration, 23 [7] (2000) 508-516.24. Da-Wen Sun and X. Zhu, Effect of Heat Transfer Direction on the Numerical Prediction of Beef Freezing Processes, Journal of Food Engineering, 42 [1] (1999) 45-50.25. Da-Wen Sun and Tadhg Brosnan, Extension of the Vase Life of Cut Daffodil Flowers by Rapid Vacuum Cooling, International Journal of Refrigeration, 22 [6] (1999) 472-478.26. Da-Wen Sun and C. Byrne, Selection of EMC/ERH Isotherm Equations for Rapeseed, Journal of Agricultural Engineering Research, 69 (1998) 307-315.27. Da-Wen Sun and J. L. Woods, Deep Bed Simulation of the Cooling of Stored Grain with Ambient Air: A Test Bed for Ventilation Control Strategies, Journal of Stored Products Research, 33 [4] (1997) 299-312.28. Da-Wen Sun and J. L. Woods, Simulation of the Heat and Moisture Transfer Process during Drying in Deep Grain Beds, Drying Technology, 15[10] (1997) 2479-2508.29. Da-Wen Sun and I. W. Eames, Optimisation of Ejector Geometry and its Application in Ejector Air Conditioning and Refrigeration Cycles, Emirates Journal for Engineering Research, 2 [1] (1997) 16-21.30. Da-Wen Sun, I. W. Eames and S. Aphornratana, Evaluation of a Novel Combined Ejector-Absorption Refrigeration Cycle, 1. Computer Simulation, International Journal of Refrigeration, 19[3] (1996) 172-180.31. Da-Wen Sun and I. W. Eames, Performance Characteristics of HCFC-123 Ejector Refrigeration Cycles, International Journal of Energy Research, 20[10] (1996) 871-885.32. Da-Wen Sun and I. W. Eames, Recent Developments in the Design Theories and Applications of Ejectors - A Review, Journal of the Institute of Energy, 68[475] (1995) 65-79.33. Da-Wen Sun and J. L. Woods, Low Temperature Moisture Transfer Characteristics of Barley: Thin Layer Models and Equilibrium Isotherms, Journal of Agricultural Engineering Research, 59 (1994) 273-283.34. Da-Wen Sun and J. L. Woods, Low Temperature Moisture Transfer Characteristics of Wheat During Thin Layer Drying, Transactions of the ASAE, 37 (1994) 1919-1926.35. Da-Wen Sun and J. L. Woods, The Selection of Sorption Isotherm Equations for Wheat Based on the Fitting of Available Data, Journal of Stored Products Research, 30 (1994) 27-43.36. Da-Wen Sun and J. L. Woods, The Moisture Content/Relative Humidity Equilibrium Relationship of Wheat - A Review, Drying Technology, 11 (1993) 1523-1551.37. Da-Wen Sun and Roy J. Crawford, Analysis of the Effects of Internal Heating and Cooling During the Rotational Moulding of Plastics, Polymer Engineering & Science, 33 (1993) 132-139.38. Da-Wen Sun and Roy J. Crawford, Computer Simulation of Rotational Moulding Heat Transfer Processes, Plastics, Rubber and Composites Processing and Applications, 19 (1993) 47-53.39. Da-Wen Sun, Manfred Groll and Ronald Werner, Selection of Alloys and Their Influence on The Operational Characteristics of a Two-Stage Metal Hydride Heat Transformer, Heat Recovery Systems & CHP, 12 (1992) 49-55.40. Da-Wen Sun and Song-Jiu Deng, Major Factors Affecting the Reaction Rate in Metal Hydride Beds, International Journal of Hydrogen Energy, 16 (1991) 751-754.41. Da-Wen Sun and Yu-Cheng Peng, A Practical Method to Design Hollow Profile Dies, Plastics, Rubber and Composites Processing and Applications 16 (1991) 109-114.42. Da-Wen Sun and Song-Jiu Deng, Theoretical Descriptions and Experimental Measurements on the Effective Thermal Conductivity in Metal Hydride Powder Beds, Journal of Less-Common Metals, 160 (1990) 387-395.43. Da-Wen Sun and Song-Jiu Deng, A Theoretical Model Predicting the Effective Thermal Conductivity in Powdered Metal Hydride Beds, International Journal of Hydrogen Energy, 15 (1990) 331-336.44. Da-Wen Sun and Song-Jiu Deng, Numerical Solution of the Two-Dimensional Non-Steady Heat and Mass Transfer Problem in Metal Hydride Beds, International Journal of Hydrogen Energy, 15 (1990) 807-816.45. Da-Wen Sun and Song-Jiu Deng, Study of the Heat and Mass Transfer Characteristics of Metal Hydride Beds: A Two-Dimensional Model, Journal of Less-Common Metals, 155 (1989) 271-279.46. Da-Wen Sun and Song-Jiu Deng, Study of the Heat and Mass Transfer Characteristics of Metal Hydride Beds, Journal of Less-Common Metals, 141 (1988) 37-43. (SCI收录):47. N. A. Valous, K. Drakakis and Da-Wen Sun, Detecting Fractal Power-law Long-range Dependence in Pre-sliced Cooked Pork Ham Surface Intensity Patterns Using Detrended Fluctuation Analysis, Meat Science, (2010) (in press).48. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Improving the Representation of Thermal Boundary Conditions of Livestock during CFD Modelling of the Indoor Environment, Computers and Electronics in Agriculture, (2010) (in press).49. S. Yu, Y. Ma and Da-Wen Sun, Effects of Freezing Rates on Starch Retrogradation and Textural Properties of Cooked Rice during Storage, LWT - Food Science and Technology, (2010) (in press).50. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, A Computational Fluid Dynamics Study of Air Mixing in a Naturally Ventilated Livestock Building with Different Porous Eave Opening Conditions, Biosystems Engineering, (2010) (in press).51. S. Yu, Y. Ma, L. Menager and Da-Wen Sun, Physicochemical Properties of Starch and Flour from Different Rice Cultivars, Food and Bioprocess Technology, (2010) (in press).52. P. Jackman, Da-Wen Sun, P. Allen, N. A. Valous, F. Mendoza1and P. Ward, Identification of Important Image Features for Pork and Turkey Ham Classification Using Colour and Wavelet Texture Features and Genetic Selection, Meat Science, 84 [4] (2010) 711–717.53. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Assessing the Ventilation Performance of A Naturally Ventilated Livestock Building with Different Eave Opening Conditions, Computers and Electronics in Agriculture, 71 [1] (2010) 7-21.54. N. A. Valous, F. Mendoza and Da-Wen Sun, Emerging Non-contact Imaging, Spectroscopic and Colorimetric Technologies for Quality Evaluation and Control of Hams: A Review, Trends in Food Science and Technology, 21 [1] (2010) 26-43.55. P. Jackman, Da-Wen Sun, P. Allen, K. Brandon and A.-M. White, Correlation of Consumer Assessment of Longissimus Dorsi Beef Palatability with Image Colour, Marbling and Surface Texture Features, Meat Science, 84 [3] (2010) 564–568.56. A. Iqbal, N. A. Valous, F. Mendoza, Da-Wen Sun and P. Allen, Classification of Pre-sliced Pork and Turkey Ham Qualities Based on Image Colour and Textural Features and Their Relationships with Consumer Responses, Meat Science, 84 [3] (2010) 455–465.57. N. A. Valous, F. Mendoza, Da-Wen Sun and Paul Allen, Supervised Neural Network Classification of Pre-sliced Cooked Pork Ham Images Using Quaternionic Singular Values, Meat Science, 84 [3] (2010) 422–430.58. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Optimising the Ventilation Configuration of Naturally Ventilated Livestock Buildings for Improved Indoor Environmental Homogeneity, Building and Environment, 45 [4] (2010) 983-995.59. N. A. Valous, Da-Wen Sun, P. Allen and F. Mendoza, The Use of Lacunarity for Visual Texture Characterization of Pre-Sliced Cooked Pork Ham Surface Intensities, Food Research International, 43 [1] (2010) 387–395.60. B. Wang, S. Y. Xu and Da-Wen Sun, Application of the Electronic Nose to the Identification of Different Milk Flavorings, Food Research International, 43 [1] (2010) 255–262.61. S. Yu, Y. Ma, T. Liu, L. Menager and Da-Wen Sun, Impact of Cooling Rates on the Staling Behavior of Cooked Rice during Storage, Journal of Food Engineering, 96 [3] (2010) 416-420.62. P. Jackman, Da-Wen Sun and P. Allen, Prediction of Beef Palatability from Colour, Marbling and Surface Texture Features of Longissimus Dorsi, Journal of Food Engineering, 96 [1] (2010) 151-165.63. F. Mendoza, N. A. Valous, Da-Wen Sun and Paul Allen, Characterization of Fat-Connective Tissue Size Distribution in Pre-sliced Pork Hams Using Multifractal Analysis, Meat Science, 83 [4] (2009) 713-722.64. S. Yu, Y. Ma and Da-Wen Sun, Impact of Amylose Content on Starch Retrogradation and Texture of Cooked Milled Rice during Storage, Journal of Cereal Science, 50 [2] (2009) 139-144.65. P. Jackman, Da-Wen Sun and P. Allen, Automatic Segmentation of Beef Longissimus Dorsi Muscle and Marbling by an Adaptable Algorithm, Meat Science, 83 [2] (2009) 187–194.66. P. Jackman, Da-Wen Sun and P. Allen, Comparison of Various Wavelet Texture Features to Predict Beef Palatability, Meat Science, 83 [1] (2009) 82–87.67. A. E. Delgado, L. Y. Zheng and Da-Wen Sun, Influence of Ultrasound on Freezing Rate of Immersion-frozen Apples, Food and Bioprocess Technology, 2 [3] (2009) 263–270.68. T. Norton, J. Grant, R. Fallon and Da-Wen Sun, Assessing the Ventilation Effectiveness of Naturally Ventilated Livestock Buildings under Wind Dominated Conditions Using Computational Fluid Dynamics, Biosystems Engineering, 103 [1] (2009) 78-99.69. P. Jackman, Da-Wen Sun and P. Allen, Comparison of the Predictive Power of Beef Surface Wavelet Texture Features at High and Low Magnification, Meat Science, 82 [3] (2009) 353-356.70. R. Zhao, E. Chen, M. Lin, Da-Wen Sun and B. Xu, Characteristics of Chamber Temperature Change during Vacuum Cooling, Journal of Food Process Engineering, 32 [2] (2009) 177-186.71. Y. Ma and Da-Wen Sun, Hardness of Cooked Rices as Affected by Varieties, Cooling Methods and Chill Storage, Journal of Food Process Engineering, 32 [2] (2009) 161-176.72. C. J. Du and Da-Wen Sun, Retrospective Shading Correction of Confocal Laser Scanning Microscopy Beef Images for Three-Dimensional Visualization, Food and Bioprocess Technology, 2 [2] (2009) 167-176.73. N. A. Valous, F. Mendoza, Da-Wen Sun and P. Allen, Texture Appearance Characterization of Pre-Sliced Pork Ham Images Using Fractal Metrics: Fourier Analysis Dimension and Lacunarity, Food Research International, 42 [3] (2009) 353-362.74. P. Jackman, Da-Wen Sun, C. J. Du and P. Allen, Prediction of Beef Eating Qualities from Colour, Marbling and Wavelet Surface Texture Features using Homogenous Carcass Treatment, Pattern Recognition, 42 [5] (2009) 751-763.75. T. Norton, A. Delgado, E. Hogan, P. Grace and Da-Wen Sun, Simulation of High Pressure Freezing Processes by Enthalpy Method, Journal of Food Engineering, 91 [2] (2009) 260-268.76. F. Mendoza, N. A. Valous, P. Allen, T. A. Kenny, P. Ward, and Da-Wen Sun, Analysis and Classification of Commercial Ham Slice Images Using Directional Fractal Dimension Features, Meat Science, 81 [2] (2009) 313-320.77. N. A. Valous, F. Mendoza, Da-Wen Sun and Paul Allen, Colour Calibration of a Laboratory Computer Vision System for Quality Evaluation of Pre-sliced Hams, Meat Science, 81 [1] (2009) 132-141.78. W. Wu, H. Zhang and Da-Wen Sun, Mathematical Simulation and Experimental Study of a Modified Zeolite 13X-Water Adsorption Refrigeration Module, Applied Thermal Engineering, 29 [4] (2009) 645-651.79. L. Drummond, Da-Wen Sun, C. T. Vila and A. G. M. Scannell, Application of Immersion Vacuum Cooling to Water-Cooked Beef Joints – Quality and Safety Assessment, LWT - Food Science and Technology, 42 [1] (2009) 332–337.80. F. Xu, W.-J. Yu, Da-Wen Sun, X.-Q. Xu and T.-C. Hua, Performance Comparison of Free and Immobilized Chicken Liver Esterase Inhibited by Four Different Pesticides, Journal of the Science of Food and Agriculture, 88 [14] (2008) 2538-2542.81. P. Jackman, Da-Wen Sun, C. J. Du, P. Allen and G. Downey, Prediction of Beef Eating Quality from Colour, Marbling and Wavelet Texture Features, Meat Science, 80 [4] (2008) 1273-1281.82. C. J. Du, Da-Wen Sun, P. Jackman and P. Allen, Development of a Hybrid Image Processing Algorithm for Automatic Evaluation of Intramuscular Fat Content in Beef M. Longissimus dorsi, Meat Science, 80 [4] (2008) 1231-1237.83. L. Drummond and Da-Wen Sun, Temperature Evolution and Mass Losses during Immersion Vacuum Cooling of Cooked Beef Joints – a Finite Difference Model, Meat Science, 80 [3] (2008) 885-891.84. L. Drummond and Da-Wen Sun, Immersion Vacuum Cooling of Cooked Beef - Safety and Process Considerations Regarding Beef Joint Size, Meat Science, 80 [3] (2008) 738-743.85. Y. Xu, T.-C. Hua, Da-Wen Sun and G.-Y. Zhou, Experimental Study and Analysis of Mechanical Properties of Frozen Rabbit Aorta by Fracture Mechanics Approach, Journal of Biomechanics, 41 [3] (2008) 649-655.86. Y. Ma, L. Lin and Da-Wen Sun, Preparation of High Fischer Ratio Oligopeptide by Proteolysis of Corn Gluten Meal, Czech Journal of Food Sciences, 26 [1] (2008) 31-40.87. C. J. Du and Da-Wen Sun, Multi-Classification of Pizza Using Computer Vision and Support Vector Machine, Journal of Food Engineering, 86 [2] (2008) 234–242.88. T. Norton and Da-Wen Sun, Recent Advances in the Use of High Pressure as an Effective Processing Technique in the Food Industry, Food and Bioprocess Technology, 1 [1] (2008) 2-34.89. Q. F. Cheng and Da-Wen Sun, Important Factors Affecting the Water Holding Capacity of Red Meat Products: A Review of Recent Research Advances, Critical Reviews in Food Science and Nutrition, 48 [1] (2008) 1–23.90. P. Barreiro, C. Zheng, Da-Wen Sun, N. Hernández-Sánchez, J. M. Pérez-Sánchez and J. Ruiz-Cabello, Non-Destructive Seed Detection in Mandarines: Comparison of Automatic Threshold Methods in FLASH and COMSPIRA MRIs, Postharvest Biology and Technology, 47 [2] (2008) 189–198.91. L. Guo, Y. Ma, Da-Wen Sun and P. Wang, Effects of Controlled Freezing-Point Storage at 0oC on Quality of Green Bean as Compared with Cold and Room-Temperature Storages, Journal of Food Engineering, 86 [1] (2008) 25-29.92. Z. W. Cui, L. J. Sun, W. Chen and Da-Wen Sun, Preparation of Dry Honey by Microwave-Vacuum Drying, Journal of Food Engineering, 84 [4] (2008) 582-590.93. D. Wu, Y. He, S. Feng, and Da-Wen Sun, Study on Infrared Spectroscopy Technique for Fast Measurement of Protein Content in Milk Powder Based on LS-SVM, Journal of Food Engineering, 84 [1] (2008) 124-131.94. Y. Xu, T.-C. Hua, Da-Wen Sun, G.-Y. Zhou and F. Xu, Effects of Freezing Rates and Dimethyl Sulphoxide Concentrations on Thermal Expansion of Rabbit Aorta during Freezing Phase Change as Measured by Thermo Mechanical Analysis, Journal of Biomechanics, 40 [14] (2007) 3201-3206.95. P. F. Yang, X. Wang, T.-C. Hua, Da-Wen Sun, Z. H. Chang and Y. L. Cao, Water Transport during Freezing of Human Dermal Fibroblast as Affected by Various Freezing Rates, Cell Preservation Technology, 5 [3] (2007) 137-143.96. C. J. Du and Da-Wen Sun, Food Image Segmentation Using an Improved Kernel Fuzzy C-Means Algorithm, Transactions of the ASABE, 50 [4] (2007) 1341-1348.97. X. Wang, T.-C. Hua, Da-Wen Sun, B. Liu, G. Yang and Y. Cao, Cryopreservation of Tissue-Engineered Dermal Replacement in Me2SO: Toxicity Study and Effects of Concentration and Cooling Rates on Cell Viability, Cryobiology, 55 [1] (2007) 60-65.98. Y. Li, S. Y. Xu and Da-Wen Sun, Preparation of Garlic Powder with High Allicin Content by Using Combined Microwave-Vacuum and Vacuum Drying as well as Microencapsulation, Journal of Food Engineering, 83 [1] (2007) 76-83.99. A. E. Delgado and Da-Wen Sun, Influence of Surface Water Activity on Freezing/Thawing Times and Weight Loss, Journal of Food Engineering, 83 [1] (2007) 23-30.100. T. Jeliński, C. J. Du, Da-Wen Sun and J. Fornal, Inspection of the Distribution and Amount of Ingredients in Pasteurized Cheese by Computer Vision, Journal of Food Engineering, 83 [1] (2007) 3-9.等约600篇.
2011年11月06日,liuxue86.com报道. 据北京国际在线报道,近日,爱尔兰国立都柏林大学(UCD)终身教授孙大文被增选为欧洲人文和自然科学院院士2011年新院士,这是欧洲华人科学家首次当选该院院士,孙大文也因此成为欧洲历史上首位成为两院院士的华人。 据了解,来自中国著名侨乡广东省潮州市的孙大文是中国华南理工大学校友,2010年年当选为爱尔兰皇家科学院院士。 他是国际著名食品科学与工程和生物系统工程专家,目前是都柏林大学食品和生物系统工程教授,领导着食品冷冻及计算机化食品技术研究团队,是爱尔兰有史以来 的第一位华人终身教授。他的主要研究包括制冷、冷冻及干燥过程和系统、食品质量与安全、生物过程模拟和优化以及计算机视觉识别技术等。尤其值得指出的是, 他在真空冷却熟肉制品、计算机视觉检测比萨饼质量、采用可食用膜技术实现果蔬货价期延长、利用超声波等物理场强化食品低温绿色加工等方面取得了令人瞩目世 界领先的开创性成就,得到国际同行的广泛认同。 创立于1988年的欧洲人文和自然科学院总部设在英国伦敦,是欧洲多国科学部长倡导、英国皇家学会等多个代表欧洲国家最高学术水平的国家科学院共同发起成立的国际科学组织,目前有院士2300人左右,包括38位诺贝尔奖获得者。 本文来源:(www.liuxue86.com)
复旦大学马余刚院士团队在激光核物理领域获得重要进展。2022年1月31日,一项飞秒强激光核物理领域的研究成果,以「飞秒泵浦时抖动电子与离子库伦碰撞所产生的同质异能态」(Femtosecond Pumping of Nuclear Isomeric States by the Coulomb Collision of Ions with Quivering Electrons ) 为题,在《物理评论快报》(PHYSICAL REVIEW LETTERS 128, 052501 (2022) ;doi://10.1103/PhysRevLett.128.052501 )上发表。论文由上海交通大学张杰院士团队与复旦大学马余刚院士团队合作完成,陈黎明和符长波是论文通讯作者,冯杰为论文的第一作者。
近年来随着强激光技术的发展,强激光驱动下与原子核相关的物理过程引起越来越多的重视。原子核同质异能态,即处在亚稳态的核素,由于其核结构理论的研究价值以及潜在的应用价值,一直以来是核物理研究的重要课题。超短的飞秒脉冲强激光,由于其能量在时间和空间维度上高度集中,有望形成超高电荷密度的加速以获得传统加速器无法比拟的超高的产生率,激发产生同质异能态。这将对核结构、医学射线成像、原子核时钟、伽马激光器、天体核合成等领域产生重要推动作用。
在该文中,合作团队报道了首次从实验上观测到了飞秒激光驱动产生的同质异能态。团队利用一台百太瓦级桌面型激光器为驱动源,观测到了Kr83核素的同质异能态(其能级为42keV,寿命为1.83小时)。其峰值产生效率达2.34E15 p/s,超出传统加速器所能达到的峰值产生率数个量级。理论分析表明,近固体密度的电子在强激光场和团簇等离子体共同作用下会多次往返抖动形成共振,增加电子与原子核的相互作用机会,进而大幅提高了同质异能素的产额。理论分析同时表明,该实验条件下的同质异能态可能主要来自于库伦激发机制,但不排除另外一种重要激发机制NEEC的存在。NEEC,即电子俘获核激发(Nuclear Excitation by Electron Capture),是原子核内转换(Internal Conversion)的逆过程,实验上尽管经过数十年的寻找,但仍没确切被证实。
此外马余刚团队近期也受邀发表了综述文章,其题为「New Opportunities for Nuclear and Atomic Physics in Femto-to-Nanometer Scale with Ultra-Intensity Lasers」【Matter and Radiation at Extremes 7, 024201 (2022); 】。文章综述了目前存在于原子和原子核尺度之间(也就是纳米和飞米尺度之间)的一些物理困惑,包括: 质子电荷半径、中子寿命、深度狄拉克态(Deep Dirac Level)等;并 探索 了利用强激光研究此尺度范围问题的可能途径,包括NEEC、电子桥(Electron Bridge)等。文章以「编辑推荐」的方式发表,并获得了AZO Optics的报道推荐()。该文章由符长波、张国强、马余刚共同执笔完成。
原文链接:
--复旦大学官网
个人简介: Edward H. Sargent,加拿大多伦多大学副校长、加拿大皇家科学院院士、加拿大工程院院士,是多伦多大学电子与计算机工程系教授。他是加拿大纳米技术领域的首席科学家,是胶体量子点光探测领域的开拓者,也是量子点PN结太阳能电池的发明者和光电转换效率的世界纪录的保持者,并通过所领导团队的努力,每年都在刷新纪录。迄今为止,已在Nature和Science等国际顶级期刊发表论文多篇团队已经发表超过300篇论文,论文被引用超过20000次,H因子72。
团队合照
接下来,我列举了Edward H. Sargent教授近期发表在Nature/Science系列期刊的工作!希望借此机会向大佬学习一下!
通过将二氧化碳电化学还原为化学原料,如乙烯,可同时达到二氧化碳减排和生产可再生能源的目的,目前,Cu是CO2RR的主要电催化剂。然而,迄今为止所达到的能源效率和生产率(目前的密度)仍然低于以工业生产乙烯所需的值。
鉴于此,卡内基梅隆大学的Zachary Ulissi、多伦多大学的Edward H. Sargent等人通过密度泛函理论计算结合主动机器学习来识别,描述了Cu-Al电催化剂能有效地将二氧化碳还原为乙烯,具有迄今为止所报道的最高的法拉第效率。与纯铜相比,在电流密度为400mA/cm2下Cu-Al电催化剂的法拉第效率超过了80%,以及在150mA/cm2下,在其阴极乙烯的能量转换效率则达到了~55%。理论计算表明,铜铝合金具有多个活性位点、表面定向和最佳CO结合能,有利于高效的、高选择性地还原CO2。
此外,原位X射线吸收光谱表明,铜和铝能够形成良好的铜配位环境,从而增强C-C二聚作用。这些发现说明了计算和机器学习在指导多金属系统的实验 探索 方面的价值,这些系统超越了传统的单金属电催化剂的局限性。
Accelerated discovery of CO2 electrocatalysts using active machine learning,
电解二氧化碳电还原反应(CO2RR)可用于绿色生产乙醇,然而,该反应的法拉第效率目前仍然不高,特别是在总电流密度超过10mA cm−2下。
鉴于此,多伦多大学的Edward H. Sargent团队报道了一类催化剂,其产乙醇的法拉第效率高达52.1%,阴极能量转化效率为31%。作者发现通过抑制中间体HOCCH*的脱氧作用,可以降低乙烯的选择性,促进乙醇生产。密度泛函理论(DFT)计算表明,由于封闭的N-C层具有很强的供电子能力,在Cu表面涂覆一层氮掺杂碳(N-C)可以促进C-C耦合,抑制HOCCH*中碳氧键的断裂,从而提高CO2RR中乙醇的选择性。
Efficient electrically powered CO2-to-ethanol via suppression of deoxygenation,
堆叠具有较小带隙的太阳能电池形成双结膜,为克服单结光伏电池的Shockley-Queisser极限提供了可能。随着溶液处理钙钛矿的快速发展,有望将钙钛矿的单结效率提高>20%。然而,这一工艺仍未实现与行业相关的纹理晶体硅太阳能电池进行整体集成。
来自多伦多大学的Edward H. Sargent 和阿卜杜拉国王 科技 大学的Stefaan De Wolf团队,报道了将溶液处理的微米级钙钛矿顶部电池与完全纹理化的硅异质结底部电池相结合,进行集成双叠层电池的方法。为解决微米级钙钛矿中电荷收集的难点,作者将硅锥体底部的耗尽宽度提高了三倍。此外,通过在钙钛矿表面固定一种自限型钝化剂(1-丁硫醇),增加了扩散长度且进一步抑制了相偏析。这些多方位的结构改善,使钙钛矿—硅串联太阳能电池的整体效率达到了25.7%。在85°C下进行400小时的热稳定性测试,以及在40°C、在最大功率点下工作400小时后,发现其性能衰减可忽略不计。
Efficient tandem solar cells with solution-processed perovskite on textured crystalline silicon,
由可再生电力驱动的电化学二氧化碳还原反应(CO2RR),为燃料和化学原料的生产与循环利用提供了一条可观的能源储存途径,然而,目前在改进用于高选择性碳氢化合物生产的电合成途径方面仍存在挑战。为了进一步提高催化作用,非均相方法和均相方法之间的协同作用越来越受到关注。通过与异质活性位点相邻的有机分子或金属配合物的相互作用,可用于调节反应中间体的稳定性,从而增加法拉第效率(产品选择性),提高催化性能,并降低反应过电位。
在这里,作者首先讨论了四类分子强化策略:①分子加成修饰的多相催化剂、②有机金属络合物催化剂、③网状催化剂和④无金属聚合物催化剂。作者介绍了目前在分子策略方面的挑战,并描述了电催化CO2RR产多碳产品的前景。这些策略为电催化CO2RR提供了潜在的途径,以解决催化剂活性、选择性和稳定性的挑战,进一步发展CO2RR。
Molecular enhancement of heterogeneous CO2 reduction,
目前通过优化钙钛矿的组成经过组合优化,在最先进的钙钛矿太阳能电池中通常含有六种成分(AxByC1−x−yPbXzY3−z)。关于每个组成部分的精确作用仍然存在许多不清晰,如何正确理解和掌握钙钛矿材料中不同组分对晶体结构、性能的影响关系,对于制备新型的高性能钙钛矿材料而言具有重要的指导意义。
鉴于此,多伦多大学的Edward H. Sargent与麻省理工学院的William A. Tisdale等人利用瞬态光致发光显微镜(TPLM),并结合理论计算,探究了钙钛矿材料中组分—结构—性能之间的关系。研究表明,单晶钙钛矿材料内部载流子的扩散率与结构组成无关;而对于多晶钙钛矿,不同的成分对载体扩散起着至关重要的作用。与CsMAFA型钙钛矿相比,不含MA的CsFA型钙钛矿载流子扩散率要低一个数量级。
元素组成研究表明,CsFA颗粒呈级配组成。在垂直载流子输运和表面电位研究中可以看到,CsFA型钙钛矿由于其非均匀结晶,从而引起晶粒的元素分布不一致,形成了不利于载流子扩散的“壳核结构”。而掺入MA可以有效改善颗粒成分的均匀性,在CsMAFA薄膜中产生了高的扩散系数。
Multi-cation perovskites prevent carrier reflection from grain surfaces, /10.1038/s41563-019-0602-2
电解二氧化碳还原(CO2RR)转化为有价值的燃料和原料,为这类温室气体的利用提供了一条有吸引力的途径。然而,在这类电解装置内,往往是由有限的气体通过液体电解质扩散到催化剂的表面,电解效率仍然不高。
鉴于此,多伦多大学的David Sinton和Edward H. Sargent等人提出了一种催化剂:离聚物本体异质结结构(CIBH),可用于分离气体、以及离子和电子的传输。CIBH由金属和具有疏水和亲水功能的超细离子层组成,可将气体和离子的输运范围从数十纳米扩展到微米级。采用这种设计策略,作者实现了在7 M KOH电解液中,以铜为催化剂进行电还原CO2,在阴极法拉第效率为45%下,产乙烯的偏电流密度高达1.3A cm-2。
CO2 electrolysis to multicarbon products at activities greater than 1 A cm−2,
手性材料在推动生物标记、手性分析和检测、对映异构体选择性分离、偏振相关光子学和光电子学应用等领域的发展具有重要意义。一维半导体的区域选择性磁化可以实现室温下的各向异性磁性,以及自旋极化——这是自旋电子学和量子计算技术所必需的特性。
鉴于此,中国科学技术大学俞书宏院士团队与国家纳米科学中心唐智勇研究员课题组、多伦多大学Edward Sargent教授团队等人利用局域磁场调控电偶极矩与磁偶极矩之间的相互作用,成功合成了一类新型手性无机纳米材料。
利用这一策略,作者将具有不同晶格、化学成分和磁性能的材料,即一个磁性成分(Fe3O4)和一系列半导体纳米棒结合在一起,在特定的位置吸收紫外线和可见光谱。由此产生的异质纳米棒表现出由特定位置磁场诱导的光学活性。本文提出的区域选择性磁化策略为设计手性和自旋电子学的光学活性纳米材料提供了一条途径。
Regioselective magnetization in semiconducting nanorods,
电催化CO2还原反应(CO2RR)为温室气体的利用、化学燃料的生产提供了一种可持续的、碳中性的方法。然而,从CO2RR高选择性地生产C2产品(例如乙烯)仍然是一个挑战。
鉴于此,多伦多大学Edward H. Sargent教授、加州理工学院Theodor Agapie教授、Jonas C. Peters教授等人提出了一种分子调控策略,用有机分子使电催化剂表面功能化,用于稳定反应中间产物,使CO2RR高选择性地产乙烯。
通过电化学、操作/原位光谱和计算研究,研究了通过芳基吡啶的电二聚作用衍生的分子库对Cu的影响。结果发现,粘附分子提高了CO中间体的稳定性,有利于进一步还原成乙烯。在中性介质的液流电池中,在偏电流密度为230 mA cm-2下,电催化CO2RR产乙烯的法拉第效率高达72%。
Molecular tuning of CO2-to-ethylene conversion,