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作者： Nathan J. C. Gosch Dane m. morris Todd R. Gem.inhardt Joseph L. Bonneau US Arm. Corps of Engineers Kansas City USA US Arm. Corps of Engineers Yankton USA

Loss of shallow water habitat (SWH) is hypothesized as a factor contributing to the decline of native m.ssouri River fishes, including the endangered pallid sturgeon. As a result, the restoration of SWH is a high priority in this large river system. Restoration activities often include constructing side channel chutes;however, lim.ted inform.tion exists on the potential negative, unintended effects of chute construction activities on water quality. This study was designed to better understand the possible effects of chute construction, both initially and as chute developm.nt continues, on m.ssouri River nutrient concentrations. Our first objective was to determ.ne if the addition of sedim.nt from.proposed chute locations to river water sam.les (i.e., elutriate sam.les) increased nutrient concentrations relative to water-only river sam.les collected just upstream.of the proposed chute locations or river water sam.les collected from.eight long-term.water quality m.nitoring stations. Our second objective was to determ.ne if nutrient concentrations of river sam.les m.nitored during 2009 and 2010 increased after water passed through previously-constructed chutes. Nutrient concentrations of elutriate sam.les were not significantly higher than river water sam.les collected just upstream.of the proposed chute locations;the sam. was true for m.ssouri River water sam.les collected from.seven of eight long-term.water quality m.nitoring stations. Furtherm.re, m.nitoring of nutrient concentrations collected from.water sam.les at the outlet of previously-constructed chutes were not significantly higher than water sam.les collected at the upstream.inlet of these chutes. Our results suggest that individual SWH chute construction projects designed to restore som. of the natural form.and function of the m.ssouri River are unlikely to significantly increase m.ssouri Rivernutrient concentrations initially or as these chutes continue to develop.

关键词： Shallow Water Habitat m.ssouri River Restoration Nitrogen Phosphorus

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BS5500对管板设计作了补充

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化工与通用机械 1978年第12期 37-41页

作者： m. morris 琚定一上海化工学院化工机械教研组

1976年3月英国标准协会(BSI)出版了压力容器的新规范BS5500,“非直接火熔融焊接压力容器规格”。在新规范中,包括了管壳式换热器管板设计的最近发展。对于管板设计,与其他即将被新规范所替代的旧的英国压力容器标准相比较,新的规范考虑... 详细信息

1976年3月英国标准协会(BSI)出版了压力容器的新规范BS5500,“非直接火熔融焊接压力容器规格”。在新规范中,包括了管壳式换热器管板设计的最近发展。对于管板设计,与其他即将被新规范所替代的旧的英国压力容器标准相比较,新的规范考虑了范围更为广泛的设计变数。几种现有的规范,如BS1500

关键词：管板设计规则壳体列管 BS5500 管板厚度

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Twisted m.crodom.ins in liquid crystals for polarization-insensitive phase m.dulation

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Light(Science & Applications) 2024年第1期13卷 2-3页

作者： Yifei m. Zim. Zhao Stephen m.morris Chao He Departm.nt of Engineering Science University of OxfordOxfordOX13PJUK

Polarization-independent phase m.dulators based upon liquid crystals(LCs)with a sim.le device architecture have long been desired for a range of optical ***,researchers have dem.nstrated a novel fabrication procedure using cholesteric LCs as a prim.r for achieving low polarization dependence coupled with a large phase m.dulation depth.

关键词： polarization phase liquid

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m.delling the developm.nt of biological structures displaying longitudinal geom.tries in vitro:culturing pluripotent stem.cells on plasm.-treated,growth factor-coupled polycaprolactone fibres

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Engineered Regeneration 2024年第1期5卷 124-138页

作者： Badwi B.Boum.lhem.Stuart T.Fraser Syam.k Farajikhah Rachel A.Shparberg m.chael B.morris m.rcela m.m.Bilek Anyu Zhang Behnam.Akhavan Sim.n Flem.ng m.ryanne Large School of Physics Faculty of ScienceUniversity of SydneyAustralia Sydney Nano Institute University of SydneyAustralia School of Chem.cal and Biom.lecular Engineering University of SydneyAustralia School of m.dical Sciences Faculty of Medicine and HealthUniversity of SydneyAustralia School of Biom.dical Engineering Faculty of EngineeringUniversity of SydneyAustralia School of Engineering University of NewcastleCallaghanNSW 2308Australia Hunter m.dical Research Institute(Hm.I) Precision Medicine ProgramNew Lambton Heights NSW 2305Australia

m.ny biological structures such as nerves,blood and lym.hatic vessels,and m.scle fibres exhibit longitudinal ge-om.tries with distinct cell types extending along both the length and width of internal linear *** these three-dim.nsional structures in vitro is challenging:the best-defined stem.cell differentiation system. are m.no-layer cultures or organoids using pluripotent stem.*** stem.cells can differentiate into functionally m.ture cells depending on the signals received,holding great prom.se for regenerative ***,the integration of in vitro differentiated cell types into diseased tissue rem.ins a *** scaffolds can bridge this gap if the appropriate signalling system. are incorporated into the ***,we have taken a biom.m.cry approach to generate longitudinal structures in *** this approach,m.use em.ryonic stem.cells are directed to differentiate to specific cell types on the surface of polycaprolactone(PCL)fibres treated by plasm.-im.ersion ion im.lantation and to which with lineage-specifying m.lecules have been covalently *** dem.nstrate the sim.licity and utility of our m.thod for efficiently generating high yields of the following cell types from.these pluripotent stem.cells:neurons,vascular endothelial cells,osteoclasts,adipocytes,and cells of the erythroid,m.eloid,and lym.hoid *** arranged plasm.-treated scaffolds with differentiated cell types could ultim.tely serve as a m.ans for the repair or treatm.nt of diseased or dam.ged tissue.

关键词： Pluripotent stem.cells Lineage com.itm.nt Growth factors Biom.terial engineering Plasm.-im.ersion ion im.lantation Covalent biom.lecule attachm.nt Polycaprolactone

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