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Quadruple[6]Helicene Featuring Pyrene Core:Unraveling Contorted Aromatic Core with Larger Effective Conjugation

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Precision Chemistry 2024年第9期2卷 488-494页

作者： Christopher Wallerius Otgonbayar Erdene-Ochir Eva Van Doeselar Ronald Alle Anh Tu Nguyen marvin F.Schumacher Arne Lützen Klaus Meerholz Sai Ho Pun Department of Chemistry University of CologneCologne 50939Germany Kekulé-Institute of Organic Chemistry and Biochemistry University of BonnBonn 53121Germany Department of Chemistry Hong Kong University of Science and TechnologyClean Water BayHong KongChina

Multiple helicenes display distinct aromatic cores characterized by highly twisted rings that are shared or fused with constituent helicene *** these aromatic cores unlocks avenues for creating multiple helicenes with distinct properties and *** we report the synthesis of a quadruple[6]helicene featuring pyrene as the aromatic *** synthesis involved key steps of the annulativeπ-extension reaction and Scholl *** extending multiple helicenes along the axial direction,the degree of contortion of the aromatic core can be controlled from nearly flat to highly ***,quadruple[6]-helicene exhibits a significant red-shift of 0.49 eV compared to quadruple[4]-helicenes,of which the red-shift arises from bothπ-extension and augmented effective conjugation due to enhanced *** chemical calculations demonstrate that the degree of contortion in the pyrene core adeptly governs the energy levels of the HOMO and LUMO,which offers an alternative strategy beyond mere enlargement of theπ*** intriguing serendipitous finding reveals the formation of one-molecule-thick supramolecular homochiral nanosheets through selfinterlocking interactions of enantiomers in single crystals,a rare packing motif for multiple helicenes.

关键词： Helicenes Polycyclic aromatics Pyrene Core contortion Effective conjugation

GeSnOI mid-infrared laser technology

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Light(Science & Applications) 2021年第12期10卷 2408-2420页

作者： Binbin Wang Emilie Sakat Etienne Herth Maksym Gromovyi Andjelika Bjelajac Julien Chaste Gilles Patriarche Philippe Boucaud Frédéric Boeuf Nicolas Pauc Vincent Calvo Jérémie Chrétien marvin Frauenrath Alexei Chelnokov Vincent Reboud Jean-Michel Hartmann Moustafa El Kurdi UniversitéParis-Saclay CNRSC2N10 boulevard Thomas Gobert91120 PalaiseauFrance UniversitéCôte d’Azur CNRSCRHEARue Bernard Grégory06905 Sophia-AntipolisFrance STMicroelectronics Rue Jean Monnet38054 CrollesFrance UniversitéGrenoble Alpes CEAIRIG-DePhy17 rue des Martyrs38000 GrenobleFrance UniversitéGrenoble Alpes CEALeti17 rue des Martyrs38000 GrenobleFrance

GeSn alloys are promising materials for CMOS-compatible mid-infrared lasers ***,Sn alloying and tensile strain can transform them into direct bandgap *** growing laser technology however suffers from a number of limitations,such as poor optical confinement,lack of strain,thermal,and defects management,all of which are poorly discussed in the ***,a specific GeSn-on-insulator(GeSnOI)stack using stressor layers as dielectric optical claddings is demonstrated to be suitable for a monolithically integration of planar Group-IV semiconductor lasers on a versatile photonic platform for the near-and mid-infrared spectral ***-shape resonators on mesa structures were fabricated from GeSnOI,after bonding a Ge_(0.9)Sn_(0.1) alloy layer grown on a Ge strain-relaxed-buffer,itself on a Si(001)*** GeSnOI microdisk mesas exhibited significantly improved optical gain as compared to that of conventional suspended microdisk resonators formed from the as-grown *** further show enhanced vertical out-coupling of the disk whispering gallery mode in-plane radiation,with up to 30%vertical out-coupling *** a result,the GeSnOI approach can be a valuable asset in the development of silicon-based mid-infrared photonics that combine integrated sources in a photonic platform with complex lightwave engineering.

关键词： GeSn OI coupling

Recent advances in biopolymer-based hemostatic materials

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Regenerative Biomaterials 2022年第1期9卷 1080-1105页

作者： marvin Mecwan Jinghang Li Natashya Falcone Menekse Ermis Emily Torres Ramon Morales Alireza Hassani Reihaneh Haghniaz Kalpana Mandal Saurabh Sharma Surjendu Maity Fatemeh Zehtabi Behnam Zamanian Rondinelli Herculano Mohsen Akbari Johnson V.John Ali Khademhosseini Terasaki Institute for Biomedical Innovation Los AngelesCA 90064USA Department of Molecular and Cell Biology University of CaliforniaBerkeleyCA 94720USA Department of Biomedical Engineering University of Southern CaliforniaLos AngelesCA 90089USA Bioengineering&Biomaterials Group School of Pharmaceutical SciencesSao Paulo State University(UNESP)AraraquaraSP 14800-903Brazil Department of Mechanical Engineering University of VictoriaVictoriaBC V8P 5C2Canada Biotechnology Center Silesian University of TechnologyGliwice 44-100Poland

Hemorrhage is the leading cause of trauma-related deaths,in hospital and prehospital *** is a complex mechanism that involves a cascade of clotting factors and proteins that result in the formation of a strong *** certain surgical and emergency situations,hemostatic agents are needed to achieve faster blood coagulation to prevent the patient from experiencing a severe hemorrhagic ***,it is critical to consider appropriate materials and designs for hemostatic *** materials have been fabricated as hemostatic agents,including synthetic and naturally derived *** to synthetic polymers,natural polymers or biopolymers,which include polysaccharides and polypeptides,have greater biocompatibility,biodegradability and ***,in this review,we focus on biopolymer-based hemostatic agents of different forms,such as powder,particles,sponges and ***,we discuss biopolymer-based hemostatic materials currently in clinical trials and offer insight into next-generation hemostats for clinical translation.

关键词： hemostasis coagulation polysaccharides polypeptides biomaterials

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通过清洁降低成本

流程工业 2015年第3期 33-35页

作者： marvin Sommer Georg Schunemann公司

防污系统的使用能够节约资金，例如，通过热能回收利用节约的成本是可以测算出来的。某研究报告表明，使用防污系统后节约的设备总投资和运行总费用可达到两位数的百分比。沙特阿拉伯Jazan新建的整体煤气化设备CCP的总投资为12．25亿欧... 详细信息

防污系统的使用能够节约资金，例如，通过热能回收利用节约的成本是可以测算出来的。某研究报告表明，使用防污系统后节约的设备总投资和运行总费用可达到两位数的百分比。沙特阿拉伯Jazan新建的整体煤气化设备CCP的总投资为12．25亿欧元，按照最低的两位数百分比10％计算，该项目通过使用防污系统可以节约1．225亿欧元，相当于一个小型项目的投资总和。因此，从经济的角度来讲，

关键词：低成本煤气化设备防污系统沙特阿拉伯总投资节约资金回收利用两位数

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动画片的电视年代

浙江工艺美术 2008年第1期 48-49页

作者： marvin 张小珊

一个男人和他的太空男孩在美国第一部上映的动画系列片是手冢治虫的太空男孩《铁臂阿童木》。太空男孩于1963年在NBC电视台上映。它内容非常简单,Tenma博士以他死去儿子的形象塑造出了一位机器人男孩。在意识到他的机器人男孩永远都无... 详细信息

一个男人和他的太空男孩在美国第一部上映的动画系列片是手冢治虫的太空男孩《铁臂阿童木》。太空男孩于1963年在NBC电视台上映。它内容非常简单,Tenma博士以他死去儿子的形象塑造出了一位机器人男孩。在意识到他的机器人男孩永远都无法长大成人以后,博士就把太空男孩这本动画系列片卖给了马戏团。最终Orchanomizu’s博士拯救了这部系列片。他以太空男孩为原形并开始创造他的机器人家庭。NBC公司把这部片子里的人物名字进行改变使其更有美国味。Tenma博士被改变为Boyton博士,Orchanomizu’s博士的名字被改

关键词：动画片美国卡通片美术片美利坚合众国北美洲大和号电视电信

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避免结垢

流程工业 2014年第12期 38-39页

作者： marvin Sommer SAB Bremen公司

不同形式的结垢增加了换热器的工作能耗，降低了工作效率。通过在上游安装过滤系统，使换热器能够比传统的解决方案更加节能高效。

关键词：结垢工作效率过滤系统节能高效换热器

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美国陆军下个世纪的坦克发展道路

国外坦克 1995年第2期 1-6页

作者： marvin Leibstone 李鑫

倾向及趋势美国陆军负责装甲车辆发展的官员目前正在努力解答这样一个“目的/能力”方程式:为了打赢预期的战争,下个世纪的主战坦克究竟应是什么样的? 精确地确定冷战后的、未来一代坦克将是什么样的,不是一件容易的事。今天,出现了几... 详细信息

倾向及趋势美国陆军负责装甲车辆发展的官员目前正在努力解答这样一个“目的/能力”方程式:为了打赢预期的战争,下个世纪的主战坦克究竟应是什么样的? 精确地确定冷战后的、未来一代坦克将是什么样的,不是一件容易的事。今天,出现了几种增长着的政治、经济以及甚至文化上的趋向。

关键词：美国陆军主战坦克装甲车辆装甲部队冷战后战争方程式政治文化生存力

Enhanced ion acceleration from transparency-driven foils demonstrated at two ultraintense laser facilities

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Light(Science & Applications) 2023年第4期12卷 593-604页

作者： Nicholas P.Dover Tim Ziegler Stefan Assenbaum Constantin Bernert Stefan Bock Florian-Emanuel Brack Thomas E.Cowan Emma J.Ditter Marco Garten Lennart Gaus Ilja Goethel George S.Hicks Hiromitsu Kiriyama Thomas Kluge James K.Koga Akira Kon Kotaro Kondo Stephan Kraft Florian Kroll Hazel F.Lowe Josefine Metzkes-Ng Tatsuhiko Miyatake Zulfikar Najmudin Thomas Püschel Martin Rehwald marvin Reimold Hironao Sakaki Hans-Peter Schlenvoigt Keiichiro Shiokawa marvin E.P.Umlandt Ulrich Schramm Karl Zeil Mamiko Nishiuchi Kansai Photon Science Institute National Institutes for Quantum Science and Technology8-1-7 UmemidaiKizugawaKyoto 619-0215Japan The John Adams Institute for Accelerator Science Blackett LaboratoryImperial College LondonLondon SW72AZUnited Kingdom Helmholtz-Zentrum Dresden-Rossendorf 01328 DresdenGermany Technische Universitat Dresden 01069 DresdenGermany Interdiscipllinary Graduate School of Engineering Sciences Kyushu University6-1Kasuga-KoenKasugaFukuoka 816-8580Japan

Laser-driven ion sources are a rapidly developing technology producing high energy,high peak current *** suitability for applications,such as compact medical accelerators,motivates development of robust acceleration schemes using widely available repetitive ultraintense femtosecond *** applications not only require high beam energy,but also place demanding requirements on the source stability and *** can be seriously affected by the laser temporal contrast,precluding the replication of ion acceleration performance on independent laser systems with otherwise similar ***,we present the experimental generation of>60 MeV protons and>30 MeV u-1 carbon ions from sub-micrometre thickness Formvar foils irradiated with laser intensities>1021 *** are accelerated by an extreme localised space charge field≥30TVm-1,over a million times higher than used in conventional *** field is formed by a rapid expulsion of electrons from the target bulk due to relativistically induced transparency,in which relativistic corrections to the refractive index enables laser transmission through normally opaque *** replicate the mechanism on two different laser facilities and show that the optimum target thickness decreases with improved laser contrast due to reduced *** demonstration that energetic ions can be accelerated by this mechanism at different contrast levels relaxes laser requirements and indicates interaction parameters for realising application-specific beam delivery.

关键词： acceleration intense transparency

Cover crops,crop rotation,and gypsum,as conservation practices,impact Mehlich-3 extractable plant nutrients and trace metals

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International Soil and Water Conservation Research 2024年第3期12卷 650-662页

作者： Javier M.Gonzalez Warren A.Dick Khandakar R.Islam Dexter B.Watts Norman R.Fausey Dennis C.Flanagan marvin T.Batte Tara T.VanToai Randall C.Reeder Vinayak S.Shedekar National Soil Erosion Research Laboratory USDA-ARSWest LafayetteIN 47904USA School of Environment and Natural Resources The Ohio State UnivWoosterOH 44691USA CFAES-South Centers SoilWater&Bioenergy Resources ProgramThe Ohio State Univ.PiketonOH 45661USA National Soil Dynamics Laboratory USDA-ARSAuburnAL 36832USA Soil Drainage Research Unit USDA-ARSColumbusOH 43210USA Department of Agricultural Environmental and Development EconomicsThe Ohio State UnivColumbusOH 43210USA Department of Food Agricultural and Biological EngineeringThe Ohio State Univ.ColumbusOHUSA

Conservation practices are encouraged to improve soil health and sustain agronomic crop ***-3 is often used as a multi-nutrient extractant to determine soil fertility status.A study inves-tigated the impacts of the conservation practices of gypsum,cover crops,and crop rotation on 28 Mehlich-3 extractable elements,of which 11 were considered plant nutrients,from soil at three mid-western US *** was collected from 0 to 15 and 15-30 cm depths 5 years after implementing the conservation *** consisted of(1)with and without cereal rye(Secale cereale L.)winter cover,(2)continuous soybean[Glycine max(L.)Merr.]***-corn(Zea mays L.)rotation,and(3)annual gypsum application(0,1.1,and 2.2 Mg ha-1).Differences were observed by site,depth,and conservation practice depending on the element *** interactive effects were observed among *** most consistent effect was observed for crop rotation across *** only affected the site with the greatest clay content,where more Ca and S were retained,and Mg and Mn *** crop only affected elements at this high clay site,where different elements were positively or negatively *** suggest that not one practice fits all,and optimum conservation practices must be tailored for the site.

关键词： Gypsum Cover crops Crop rotation Mehlich-3 Plant nutrients Trace metals