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Understanding the Impact of Solvent on the Adsorption and Reaction on Zeolites

作者： (美)Robert S. Weinberg (美)Daniel gould

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Understanding the Impact of Solvent on the Adsorption and Re...

The nucleolar protein Dntl is a novel negative regulator of septation initiation network in fission yeast

中国化学会第十九届全国催化学术会议

作者： Bingjun Xu Nicholas gould Jingcheng Wu Hongje Cho Department of Chemical and Biomolecular Engineering University of Delaware

Identifying optimal solvents for liquid phase reactions occurring on the surface of solid catalysts could be challenging, as guiding principles in how solvents affect the rate and the product distribution remain elusive. Most attempts to understand solvent effects involve screening multiple solvent choices via catalytic activity testing, which rarely leads to predictive insights of the optimal solvent for future reactions. Novel liquid phase experimental techniques are needed to provide insights into how solvent affects adsorption, transport, and phase equilibria, especially in non-ideal, porous materials where modelling techniques have difficulty capturing the complexity of the system. In this work, we show that attenuated total reflection infrared spectroscopy（ATR-FTIR） is able to quantitatively determine adsorption isotherms of pyridine on porous materials in the presence of liquid solvents. The effect of the solvent identity as well as acid site density, hydrophobicity, and pore diameter on both confinement and subsequent protonation thermodynamics of pyridine are examined. The impact of solvents on the rates and activation of a model reaction, i.e., cyclohexanol dehydration, are investigated and discussed.

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The nucleolar protein Dntl is a novel negative regulator of ...

中国细胞生物学学会2005年学术大会、青年学术研讨会

作者： Hayes McDonald Srinivas Venkatram Kathleen gould Dannel MeCollum Department of Cell Biology The Scripps Research Institute La Jolla CA 92037 Howard Hughes Medical Institute and Department of Cell and Developmental Biology Howard Hughes Medical Institute and Department of Cell and Developmental Biology Vanderbilt University Nashville TN 37232 Department of Molecular Genetics and Microbiology and the Program in Cell Dynamics University of Massachusetts Medical School Worcester MA 01605

In the fission yeast Schizosaccharomyces pombe, the septation initiation network (SIN) triggers cytokinesis once nuclear division comes to completion. Dmalp, a spindle checkpoint protein and cytokinesis inhibitor, prevents mitotic exit and cytokinesis during spindle checkpoint activation by inhibiting SIN signaling (Guertin et al., 2002). Recently, through a biochemical approach, we have identified a novel serine-rich protein Dnt1 (Dma1 associated, nucleolus localized and thiabendazole sensitive) that forms a complex with Dma1. The interaction between these two proteins is significantly stronger at metaphase, suggesting that Dntl may function together with Dma1 at this stage to coordinate mitosis and cytokinesis. Sequence comparison revealed that Dnt1p shows limited homology to the budding yeast Net1p/Cfi1p, which is a nucleolar protein required for rDNA silencing and for sequestering the phosphatase Cdcl4p in the nucleolus for most of the cell cycle (Shou et al., 1999;Visintin et al., 1999). It has been shown that release of Cdc14p from the nucleolus by deleting NET1 in budding yeast bypasses the essential function of some mitotic exit network (MEN, a homologous pathway to SIN in fission yeast) components. Similar to Net1p, Dntlp is also localized in the nucleolus as punctate dots throughout cell cycle and on the spindle at anaphase, and disruption of dnt1+ resulted in loss of rDNA silencing and could rescue temperature-sensitive lethality of some SIN mutants. However, in contrast to Netlp, we have been unable to detect physical interaction between Dntl and phosphatase Clp1 (the homologue of budding yeast Cdc14) by immunoprecipitation. In addition, deletion of dn can rescue SIN mutants independent of Clp1. Furthermore, the cytokinesis checkpoint defects in clp1 disruptant could be rescued by deletion of dnt1+, and it was through maintaining active SIN signaling at spindle pole body (SPB). Therefore, our data suggested that nucleolar Dnt1p might work as a novel nega

关键词： The nucleolar protein Dntl is a novel negative regulator of septation initiation network in fission yeast

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运动损伤的心理学

体育科学 2000年第6期20卷 86-89页

作者： Daniel gould Linda M.Petlichkoff Bill Prentice Fred Tedeschi 艾华美国北卡罗来纳格林斯博罗大学运动体育科学系美国爱达荷州博伊西公立大学人体运动学系美国查佩尔希尔市北卡罗来纳大学运动科学系美国伊利诺斯州鹿园芝加哥公牛队运动医学部

1 根据你们的经验和现有的科学资料信息,是否存在与运动损伤有关的重要心理因素或性格类型?

关键词：运动医学运动心理学心理特征运动损伤

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辛巴达历险记初级外研社点读书

丛书名：书虫牛津英汉双语读物

2011年

作者：（英）JANET HARDY-gould （英）MAYA GAVIN插图张黎新译

我们的故事发生在古老的巴格达。一位富有的老人躺在床上, 他已病入膏肓。他把自己的儿子辛巴达叫我身边……

ISBN: (纸本)9787513506427

我们的故事发生在古老的巴格达。一位富有的老人躺在床上, 他已病入膏肓。他把自己的儿子辛巴达叫我身边……

关键词：对照读物漫画英语现代英国作品汉语

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为嵌入式处理设计选择合适的开发工具

今日电子 2007年第7期 58-59页

作者： Jay gould Xilinx嵌入式解决方案市场部

如果问使用嵌入式开发工具的用户，他们需要什么功能来满足其下一代终极处理设计的需要，他们必然会回答：“性能和先进的处理功能。”为了满足嵌入式环境的要求，工程师必须设法从现有大多数成本经济的器件中一点点地挖掘出性能，并且... 详细信息

如果问使用嵌入式开发工具的用户，他们需要什么功能来满足其下一代终极处理设计的需要，他们必然会回答：“性能和先进的处理功能。”为了满足嵌入式环境的要求，工程师必须设法从现有大多数成本经济的器件中一点点地挖掘出性能，并且，他们在设计和调试两个方面都需要方便使用的工具，因此，选择一个性能强大具有先进的处理功能的开发工具对工程师的设计工作至关重要。

关键词：嵌入式环境开发工具设计工作工程师性能

Screening Effects on van der Waals Interactions

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Screening Effects on van der Waals Interactions

第十三届全国量子化学会议

作者： Li M. Reimers JR gould T Dobson J Shanghai University University of Technology Sydney Griffith University

Van der Waals interactions are ubiquitous in the world, and have been recognized as critical to most important properties of natural matters including proteins and DNA(deoxyribonucleic acid). In chemical and biochemical envi ronments,mode rn empirical app ro aches like Grimme ’s D3 method allow for fast evaluation of these forces in electronic-structure calculations. However, this and related methods are based on London’s approximation to the van der Waa ls force as arising from pairwise-additive atomic fluctuations and polarizations. Recently,the Dobson classification was introduced to understand the shortcomings of such approaches, shortcomings particularly relevant for low-dimensional molecules and conductors such as graphene, C, large aromatic molecules, and nanotubes. An important experimental characterisation of non-additive effects was the recent demonstration the placing a graphene layer between a silica substrate and silica AFM tip switches off the van der Waals inter action between tip and substrate through a Faraday-cage screening effect. We develop computational models to understand this effect, comparing the pairwise-additive D3 method to the popular many-bond dispersion(MBD) method for treating screening, and a new method developed by gould to include and improve not only these contributions but also those from long-range fluctuations(related to the Casimir effect).

关键词： Van der Waals interaction Non-additive effect Long-range Fluctuation

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水泥搅拌器概念应用于制革

中国皮革 1974年第7期 20-21页

作者： Bruce gould 上海沪光制革厂皮革研究室

五年前埃格累斯通用货车式水泥搅拌器进行脱毛初步试验。几次试验结果表明很有希望。经过对搅拌器作了一些改进,终于取得了成功。他的试验导致了皮革加工改备的新路线的发展。到目前,已迅速发展为该工业的标准了。1969年查林杰-柯克公... 详细信息

五年前埃格累斯通用货车式水泥搅拌器进行脱毛初步试验。几次试验结果表明很有希望。经过对搅拌器作了一些改进,终于取得了成功。他的试验导致了皮革加工改备的新路线的发展。到目前,已迅速发展为该工业的标准了。1969年查林杰-柯克公司开始制造用于皮革全部湿加工的皮革加工器。现在共有6种型号,4种用于制革,2种用于腌皮。制革转鼓载重量从5000磅到20000磅。腌皮转鼓

关键词：搅拌器化工机械皮革加工转鼓水泥

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迎来新一代FPGA

世界电子元器件 2002年第11期 32-34页

作者： Jay gould Xilinx公司

新一代平台FPGA器件不仅比早先代的产品规模更大、速度更快,并且已经能够在单个功能强大的可编程系统平台器件中集成大量传统上的"片外"元器件.过去,嵌入式设计是软件和硬件的组合,其中硬件平台通常以处理能力、存储器和数字逻辑来简单... 详细信息

新一代平台FPGA器件不仅比早先代的产品规模更大、速度更快,并且已经能够在单个功能强大的可编程系统平台器件中集成大量传统上的"片外"元器件.过去,嵌入式设计是软件和硬件的组合,其中硬件平台通常以处理能力、存储器和数字逻辑来简单地描述.但到了2002年,业界已经可在单个可编程平台器件中实现处理和计算能力、存储器、逻辑单元和附加系统器件的完全集成.

关键词： FPGA 现场可编程门阵列嵌入式工具存储器可编程平台

湿润及干旱的北方带、温带、热带森林斑块中美洲山杨木(Populus tremuloides Michx.)的腐烂分解

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AMBIO－人类环境杂志 2008年第7期37卷 518-527页

作者： Grizelle González William A．gould andrew T．Hudak Teresa Nettleton Hollingsworth 刘琪（译）王大伟（译）美国农业部USDA林业局FS国际热带森林研究所ⅡTF 美国农业部林业局落基山脉研究站莫斯科林业科学实验室中国

本研究对山杨木的腐烂分解进行了实验:1)量化了湿润及干旱的北方带(美国阿拉斯加和明尼苏达)、温带(美国华盛顿和爱达荷)热带(波多黎各)森林类型中美洲山杨木桩(Populustremuloides)的总量残留百分比、分解常数和性能强度;2)因为斑块大... 详细信息

本研究对山杨木的腐烂分解进行了实验:1)量化了湿润及干旱的北方带(美国阿拉斯加和明尼苏达)、温带(美国华盛顿和爱达荷)热带(波多黎各)森林类型中美洲山杨木桩(Populustremuloides)的总量残留百分比、分解常数和性能强度;2)因为斑块大小、森林年龄(和/或结构)以及大中等尺度上的气候均与木材的分解相关,测定了斑块化对木材分解速率的影响。斑块大小代表了某一气候地区的景观变化程度。总的说来,小斑块的平均面积为10～14hm^2,中等斑块的为33～60hm^2,大斑块的为100～240hm^2。结果发现:1)热带山杨木桩分解最快,温带最慢;2)在北方带和温带斑块中,干旱林的总量残留百分比显著高于潮湿林的,而在热带斑块中则相反;3)在北方带、温带干旱和热带潮湿林中,森林斑块大小不影响杨木桩的总量残留百分比;4)北方带、温带和热带斑块的边缘和内部,杨木分解没有显著差异。本研究结论如下:1)在广阔的气候梯度下,水汽条件是木材分解的重要控制因素,而且二者之间关系可能是非线性的;2)特殊有机体的存在(白蚁)可能会比单凭气候因子预测的更明显地改变木材分解速率。对木材分解的生物防治可能更是热带地区木材分解的重要预测指标,而非生物限制似乎是寒冷森林斑块木材分解的重要决定因素。

关键词：斑块大小热带森林腐烂分解温带北方干旱杨木湿润