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100-gb/s undersea transmission with high spectral efficiency using pre-filtered QPSK modulation format

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Chinese Optics Letters 2010年第9期8卷 831-836页

作者： J.-X. Cai Y. Cai C. R. Davidson D. g. Foursa A. Lucero O. Sinkin W. Patterson A. Pilipetskii g. Mohs Neal S. Bergano Tyco Electronics Subsea Communications LLC ("TE SubCom" formerly known as ~co Telecommunications (US) Inc.) 250 Industrial Way West Eatontown NJ 07724 USA

We provide a review of our recent 100-gb/s, high spectral efficiency （SE） experiment targeting transoceanic and regional undersea transmission distances. We demonstrated that simple pre-filtering at the transmitter together with a maximum a posteriori probability （MAP） detection algorithm can significantly improve SE. We transmitted 96×100-gb/s pre-filtered polarization division multiplexed return-to-zero quadrature phase shift keyed （PDM-RZ-QPSK） channels with 300% SE over 10608 km using 52-km spans of 150-μm 2 fiber and simple single-stage erbium-doped fiber amplifiers （EDFAs）. We also achieved 400% SE over 4368 km using similar techniques.

关键词： Bit error rate Erbium doped fiber amplifiers Modulation Optical signals Quadrature phase shift keying Signal processing

Effect of promoters on dynamics of gas-solid fluidized bed——Statistical and ANN approaches

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China Particuology 2007年第6期5卷 401-407页

作者： Y.K. Mohanty K.C. Biswal g.K. Roy B.P. Mohanty Department of Chemical Engineering GIET Gunupur 765 022 Rayagada Orissa India Department of Chemical Engineering NIT Rourkela 769008 Orissa India

In this study, a bubbling fluidized bed column, 99 mm in inside diameter and 960 mm in height, was used to investigate the effect of rod and disc promoters on fluctuation and expansion ratios. Factorial design （statistical approach） and artificial neural network （ANN） models were developed to predict the fluctuation and expansion ratios in this gas-solid fluidized bed with varying gas flow rates, bed heights, particle sizes and densities. The fluctuation and expansion predicted using these statistical and ANN models, for beds with and without promoters, were found to agree well with corresponding experiments. The statistical model was found to be superior to the ANN model due to its ability to take into account both individual and interactive effects. The rod promoters were found to be more effective in reducing bed fluctuation, and in increasing bed expansion at high gas mass velocities.

关键词： gas-solid fluidized bed Fluctuation ratio Expansion ratio Promoter Factorial design Artificial neural network

约翰·巴尔代萨里真诚的艺术家绝不生产无聊的艺术

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城市地理 2022年第1期1卷 130-133页

作者：李梦梦 adam(图) 不详

巴尔代萨里与观念艺术约翰·巴尔代萨里(John Baldessari),美国当代艺术家,20世纪60年代开始活跃于美国艺术界。他独特的艺术观念,在艺术"乱世"之中成为美国观念艺术的引领者,后来被尊称为“观念艺术教父”。巴尔代萨里刚开始创作时,以... 详细信息

巴尔代萨里与观念艺术约翰·巴尔代萨里(John Baldessari),美国当代艺术家,20世纪60年代开始活跃于美国艺术界。他独特的艺术观念,在艺术"乱世"之中成为美国观念艺术的引领者,后来被尊称为“观念艺术教父”。巴尔代萨里刚开始创作时,以架上绘画和雕塑为主,在那个年代,人们认为艺术只有这两项,甚至连摄影都不能算真正的艺术。

关键词：观念艺术当代艺术家萨里架上绘画巴尔艺术观念引领者

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马斯克的一小步是不是人类的一大步?

商业周刊（中文版） 2020年第9期 10-11页

作者： adam Minter 邵璐宁(译) 不详

太空探索技术公司(SpaceX)搭载两名美国宇航员的“载人龙”(Crew Dragon)飞船已在绕地轨道运行,成为新太空时代的一道亮丽风景。这艘商业化制造的航天飞船外观光滑,造型时尚,注定会在未来的设计学教科书中占据与意大利跑车比肩的位置。

关键词：太空探索航天飞船太空时代外观光滑宇航员商业化载人

Highly electroactive N–Fe hydrothermal carbons and carbon nanotubes for the oxygen reduction reaction

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Journal of Energy Chemistry 2020年第11期29卷 260-270页

作者： R.g.Morais N.Rey-Raap J.L.Figueiredo M.F.R.Pereira Associate Laboratory LSRE-LCM Departamento de Engenharia QuimicaFaculdade de EngenhariaUniversidade do PortoR.Dr.Roberto Frias s/n4200-465PortoPortugal

glucose-derived carbons were prepared by hydrothermal carbonization of glucose followed by carbonization or activation to obtain carbon materials with different microporosities. These microporous carbons and carbon nanotubes(CNTs) were functionalized with melamine and/or iron(Ⅱ) phthalocyanine(FePc)following three different methodologies:(i) Functionalization with melamine via thermal treatment,(ii)incorporation of the lowest amount of FePc reported in the literature via incipient wetness impregnation followed by thermal treatment and(iii) functionalization with melamine followed by Fe Pc *** chemical and textural characterization of the prepared materials and their electrochemical assessment allowed to understand the role of microporosity in the incorporation of FePc and its effect on the oxygen reduction reaction(ORR). It was observed that FePc was preferentially incorporated inside the porous structure, especially in samples with more developed microporosity. However, functionalization with melamine modified the textural properties and the surface chemistry, favoring the incorporation of FePc on the surface. Regarding the electrochemical performance, the presence of FePc greatly enhanced the electroactivity of the microporous catalysts. An onset potential of 0.88 V and a four-electron pathway were obtained for glucose-derived carbons, whereas the limiting current densities and kinetic current densities rose by 126% and 222%, respectively, in comparison to the base sample. Notwithstanding, the highest electrochemical activity was observed for the sample prepared with CNTs, due to the synergy between the active metal centers and their highly graphitic carbon structure. The electrochemical parameters of CNTFeP csurpass the commercial Pt/C. The half-wave potential is 40 mV higher, the limiting current density increases by 17%, and a negligible production of by-products(< 1%) was observed.

关键词： Iron(Ⅱ)phthalocyanine Hydrothermal carbons Carbon nanotubes Oxygen reduction reaction Electrocatalysis

Unequal Distribution of Innovation Efforts for Neglected Tropical Diseases:The Role of Funding Evaluation Criteria

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Mechanical stimulation devices formechanobiology studies:a market,literature,and patents review

Health（健康） 2024年第5期 490页

作者： Anne M.g.Neevel Kenneth D.S.Fernald Linda H.M.van de Burgwal

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Bio-Design and Manufacturing 2023年第3期6卷 340-371页

作者： F.Melo-Fonseca O.Carvalho M.gasik g.Miranda F.S.Silva Center for MicroElectroMechanical Systems University of Minho(CMEMS-UMinho)Campus de Azurém4800-058 GuimarãesPortugal LABBELS–Associate Laboratory BragaGuimarãesPortugal International Iberian Nanotechnology Laboratory(INL) 4715-330 BragaPortugal School of Chemical Engineering Aalto University Foundation00076 EspooFinland Seqvera Ltd. HelsinkiFinland Department of Materials and Ceramic Engineering CICECOAveiro Institute of MaterialsUniversity of Aveiro3810-193 AveiroPortugal

Significant advancements in various research and technological fields have contributed to remarkable findings on the physiological dynamics of the human *** closely mimic the complex physiological environment,research has moved from two-dimensional(2D)culture systems to more sophisticated three-dimensional(3D)dynamic *** bioreactors or microfluidic-based culture models,cells are typically seeded on polymeric substrates or incorporated into 3D constructs which are mechanically stimulated to investigate cell response to mechanical stresses,such as tensile or *** review focuses on the working principles of mechanical stimulation devices currently available on the market or custom-built by research groups or protected by patents and highlights the main features still open to *** are the features which could be focused on to perform,in the future,more reliable and accurate mechanobiology studies.

关键词： Biomaterials Polymers Actuators Mechanical stress Mechanotransduction

Thrombospondin-1 expression correlates with angiogenesis in experimental cirrhosis

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World Journal of gastroenterology 2008年第14期14卷 2213-2217页

作者： gülsüm zlem Elpek güzide Ayse gkhan Sevgi Bozova Akdeniz University Medical School Department of Pathology Antalya 07070 Turkey

AIM:To investigate the significance of Thrombospondin-1 (TSP-1) expression and its relationship with angiogenesis during experimental fibrosis. METHODS:Cirrhosis was induced in male Wistar rats by intraperitoneal administration of diethyl nitrosamine (DEN). The serial sections from liver tissues were stained with anti-CD34 and anti-TSP-1 antibodies before being quantitated by light microscopy. RESULTS:Our results showed that of TSP-1 expression gradually increases according to the severity of fibrosis (groupⅠvs group Ⅱ, group Ⅲ and group Ⅳ;group Ⅱ vs group Ⅲ and group Ⅳ;group Ⅲ vs group Ⅳ, P giogenesis (P giogenesis provided by this study suggests that besides its role as a strong promoter of transforming growth factor-β1 (TgF-β1), TSP-1 might have an additional role in liver fibrogenesis by stimulating angiogenesis and this protein could be a potential target to prevent fibrogenesis in chronic inflammatory diseases of the liver.

关键词： Experimental liver cirrhosis Immuno-histochemistry Liver fibrosis Pathologic angiogenesis Thrombospondin-1

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美佛蒙特州参议院通过法案允许同性婚姻

英语沙龙（初级版） 2009年第5期 60-61页

作者： adam Silverman 李希特(翻译)

周一（2009年3月23日）晚上，美国佛蒙特州参议院以压倒性多数投票通过了一项允许同性结婚的议案，这使得该州成为美国第一个完成司法程序正式立法承认同性伴侣结婚权利的州。

关键词：参议院同性婚姻法案司法程序性伴侣结婚美国议案