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2011年

作者： chad Perkins.

来源：畅想之星图书光盘版（南... 评论

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第79届奥斯卡颁奖典礼精华回放

疯狂英语（初中天地） 2007年第5期 48-49页

作者： chad Phil 文静

记者:大家好!我们正在第79届奥斯卡电影颁奖礼现场,这是好莱坞精英们的庆典。呃,与往年不同的是,今年的最佳影片没有明确的大热之作,因此这个悬念本身就好比是一部非常精采的电影。杰克·尼科尔森:奥斯卡最佳影片获奖者……《无间道风... 详细信息

记者:大家好!我们正在第79届奥斯卡电影颁奖礼现场,这是好莱坞精英们的庆典。呃,与往年不同的是,今年的最佳影片没有明确的大热之作,因此这个悬念本身就好比是一部非常精采的电影。杰克·尼科尔森:奥斯卡最佳影片获奖者……《无间道风云》。记者:那是一部非常棒的电影,《无间道风云》这部警匪惊悚片是我心目中的最佳电影,它果然获奖了。

关键词：奥斯卡无间道

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After Effects特效大全

Crouzon syndrome mouse model exhibits cartilage hyperproliferation and defective segmentation in the developing trachea

作者： (美)chad Perkins

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Science China(Life Sciences) 2019年第10期62卷 1375-1380页

作者： Elizabeth A. Hines Mary-Kayt N. Jones Julie F. Harvey chad Perlyn David M. Ornitz Xin Sun Jamie M. Verheyden Laboratory of Genetics University of WisconsinMadisonWI 53706USA Department of Surgery Florida International University College of MedicineMiamiFL 33199USA Department of Developmental Biology Washington University School of MedicineSt. LouisMO 63110USA Department of Pediatrics University of California-San DiegoLa JollaCA 92093USA

Crouzon syndrome is the result of a gain-of-function point mutation in FGFR2. Mimicking the human mutation, a mouse model of Crouzon syndrome(Fgfr2342Y) recapitulates patient deformities, including failed tracheal cartilage segmentation, resulting in a cartilaginous sleeve in the homozygous mutants. we found that the Fgfr2C342Y/C^342Y mutants exhibited an increase in chondrocytes prior to segmentation. This increase is due at least in part to over proliferation. Genetic ablation of chondrocytes in the mutant led to restoration of segmentation in the lateral but not central portion of the trachea. These results suggest that in the Fgfr2C342Y/C342Y mutants, increased cartilage cell proliferation precedes and contributes to the disruption of cartilage segmentation in the developing trachea.

关键词： trachea lung mouse development

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五亿年前的大陆

地质科技通报 1993年第2期 75-76页

作者： chad McCabe ,张昌明

在过去的地质时期中,地球的地理面貌是什么样的呢?人们从世界海洋盆地的研究中已经熟知,自从联合古陆(Pangea)这个超级大陆在约180Ma前破裂以来的大陆移动。然而,由先前的大陆在古生代晚期大约250Ma前聚合而成的联合古陆只存在于地质时... 详细信息

在过去的地质时期中,地球的地理面貌是什么样的呢?人们从世界海洋盆地的研究中已经熟知,自从联合古陆(Pangea)这个超级大陆在约180Ma前破裂以来的大陆移动。然而,由先前的大陆在古生代晚期大约250Ma前聚合而成的联合古陆只存在于地质时期的一个相当短

关键词：微大陆苏格兰北美古陆地史时期地质时期奥陶纪晚奥陶世

Natural history of intraductal papillary mucinous neoplasia:How much do we really know?

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world Journal of Gastrointestinal Surgery 2010年第10期2卷 368-372页

作者： chad G Ball Thomas J Howard Department of Surgery Indiana University School of Medicine

Information on the natural history of intraductal papillary mucinous neoplasia(IPMN) is currently inadequate due to a lack of carefully orchestrated long-term followup on a large cohort of patients with asymptomatic *** on the available data,one can draw the conclusions that main duct IPMN is commonly associated with malignancy and an aggressive operative stance should be taken with resection being offered to most patients who are suitable operative *** contrast,the majority of branch type IPMN with a diameter of less than 3 cm can be safely followed with routine surveillance imaging provided they lack the high-risk covariates of age,symptomatology,nodularity or wall thickness.

关键词： Intraductal papillary mucinous neoplasia Cystic pancreatic neoplasm Pancreas

Evaluating a Three-Fold Continuum of Fry Stocking Density for Rearing walleye in Lined Ponds

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Open Journal of Animal Sciences 2022年第2期12卷 192-199页

作者： Matthew J. ward chad R. Haabala South Dakota Department of Game Fish and Parks Blue Dog State Fish Hatchery Waubay USA

Fry stocking density can affect harvest metrics for fingerling walleye (Stizostedion vitreum) reared in drainable ponds, but few studies have examined these relationships with the use of elevated walleye fry stocking densities in lined ponds. Correlation and regression analyses were used to assess how a three-fold change in walleye fry stocking density (234,375 to 703,125 per hectare) relates to harvest metrics and length of the culture period, as well as the tradeoff experienced between walleye size (grams) and harvest density in 0.32-hectare lined ponds over a nine-year period at Blue Dog State Fish Hatchery, South Dakota. As fry stocking density increased, so did harvest metrics for both number (r = 0.85, P ween 24 and 35 days and was negatively related to stocking density (r = -0.66, P The linear relationship between harvest density and yield was highly correlated (r = 0.95, P with highest values measuring 617,625 walleye and 173 kilograms per hectare. Harvest density explained 61% of the variation in walleye size (P 0.01) and exhibited a decreasing curvilinear relationship such that continued increases in harvest density resulted in smaller reductions in fish size. Increasing fry stocking density from 234,375 to 703,125 per hectare in lined ponds coincided with increased rearing efficiencies for number and yield, as well as a reduced culture period. Minimal reduction in walleye size occurred once harvest density exceeded 300,000 per hectare.

关键词： walleye Culture Lined Ponds Rearing Efficiencies Pond Stocking Density

Students＇ Perception and Experiences of A Programme with Cultural and Adventure Initiatives Towards Group Cohesion

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Journal of Tourism and Hospitality Management 2016年第5期4卷 198-206页

作者： chad J. Roux Natasha Janse van Rensburg UniversityofJohannesburg JohannesburgSouthAfrica VaalUniversityofTechnology VanderbijlparkSouthAfrica

The purpose of this exploratory study was to determine the influence of selected cultural and adventure initiatives on the perception and experiences of group cohesion in a multicultural higher education institution. After a 3-day camp, rich qualitative data f^om students （n = 120） were gathered through focus group discussions and PowerPoint presentations. Using ***, four themes emerged： positive attitude and behaviour, maintaining group level, self-maintaining, and membership attraction and attachment. The findings revealed positive experiences among the participants. It is recommended that follow-up interventions should follow to ensure sustainability.

关键词： group cohesion cultural and adventure initiatives multicultural higher education institutions

The substorm current wedge and midnight sector partial ring current near substorm onset: A synthesis based on a magnetotail magnetic field geometry model

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Advances in Polar Science 2013年第1期24卷 32-41页

作者： George J Sofko Kathryn A Mcwilliams chad R Bryant Institute of Space & Atmospheric Studies University of Saskatchewan

The Substorm Current wedge （SCw） occurrence in the late growth and onset phases of substorms was proposed as the current system which disrupts cross-tail current by diverting it to the ionosphere. The closure current for the SCw originally was suggested to be the strong westward auroral electrojet （wEJ）. However, the SCw-wEJ system has no viable generator current. Similarly, the asymmetric or Partial Ring Current （PRC） increases in strength during the growth phase, and is sometimes associated with an enhanced Region 2 field-aligned current （FAC） closing to the ionosphere, but specifics of that closure have been lacking. Here we present a tmifying picture which includes the SCw post- and pre-midnight （AM and PM, respectively） currents and a generator current in the midnight portion of the PRC system, with these currents based upon a model of the nightside magnetotail magnetic geometry. That geometry consists of open north and south lobe regions surrounding a plasmasheet with two types of closed field line regions-stretched lines in the central part of the plasmasheet （SPS） and dipolar lines （DPS） between the low lati- tude boundary layer （LLBL） regions and the SPS. There is also an important plasmasheet transition region （TPS） in which the dipolar field near the plasmapause gradually transforms to stretched lines near the earthward edge of the SPS, and in which the midnight part of the PRC flows. we propose that our proposed near-onset current system consists of a central current which be- comes part of the midnight sector PRC and which is the generator, to which are linked two three-part current systems, one on the dawnside and one on the duskside. The three-part systems consist of up and down FACs closing as Pedersen currents in the iono- sphere. These 3-part systems are not activated until near-onset is reached, because of a lack of ionospheric conductivity in the appropriate locations where the Pedersen current closure occurs. The initial downward FAC of the 3-pa

关键词： magnetotail magnetic field model auroral substorm substorm current wedge partial ring current substorm onset

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Predicting Phosphorus Sorption onto Steel Slag Using a Flow-through approach with Application to a Pilot Scale System

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Journal of water Resource and Protection 2011年第4期3卷 235-244页

作者： chad J. Penn Joshua M. McGrath 不详

Reducing phosphorus (P) loads from soils to surface waters is necessary for solving the problem of eutrophication. Many industrial by-products have been shown to sorb appreciable amounts of dissolved P from solution and it has been proposed to use P sorption materials (PSMs) such as steel slag in landscape scale “filters” for trapping dissolved P in runoff. The objective of this study was to model the effect of retention time (RT) and P concentration on P sorption by steel slag and a surface modified slag in a flow-through system. Sorption of P onto steel slag and rejuvenated-modified steel slag was measured using a traditional batch isotherm and a flow-through setting at several RTs and P concentrations. Flow-through data were used to produce a model that estimated P sorption based on RT and P concentration. The model was tested on a pilot-scale pond filter consisting of the same slag materials. For both the materials, flow-through tests indicated an increase in RT increased P removal efficiency but decreased the total amount of P removed at saturation. The Langmuir model developed from batch isotherms overestimated and underestimated P sorption in normal and rejuvenated slag respectively, relative to flow-through. Normal and rejuvenated slag removed 38 and 36% of P in the pilot-scale pond filter after 2 weeks of pumping. The Langmuir equation poorly predicted P sorption in the pond filter while the flow-through model produced reasonable estimates. Results suggest that flow-through methodology is necessary for estimating P sorption in the context of landscape P filters.

关键词： Phosphorus By-Products Phosphorus Removal Structure