2,552 research outputs found
Adelong Creek, the pool downstream from the Gibraltar Mines sluice gate, 1915 [picture] /
No full textTitle based on information from Adelong Alive Museum.; "No 4, 20/5/15, R Strangman"--In pencil on reverse.; Part of collection: R.C. Strangman collection of photographic views of Canberra, 1930-1960.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-an24307168. "Adelong Creek, the pool downstream from the Gibraltar Mines sluice gate"--Adelong Alive Museum notes
Pool-fills: a window to palaeoflood history and response in bedrock-confined rivers
Get PDFChannel-scale sedimentary units associated with bedrock-controlled riffle-pool morphology are examined in detail along Sandy Creek gorge, an ephemeral stream in arid south-eastern central Australia. Pool-fills comprise cut-and-fill assemblages of poorly sorted sediments ranging in texture from muds to boulders. Five unit types are defined based on particle size, sedimentary structures, geometry and bounding surface character: (1) coarse-grained bar platform; (2) fine-grained bar supraplatform; (3) fine-grained pool-fill; (4) fine-grained bench; and (5) modern pool-fill. The last coarse-grained unit currently lining the pools suggests an altered sedimentation style over the post-settlement period (post-ad 1860s). Situated at bedrock valley constrictions, pool-fills are compared with other sedimentary units associated with recirculating currents: eddy bars and slackwater deposits. But only the fine-grained bench units reflect eddy recirculation; the pool-fills are principally forced-bars associated with bedrock-controlled or 'forced' riffle-pool morphology. A late Holocene palaeoflood history is proposed based on radiocarbon ages from the pool-fills: multiple phases of cut-and-fill activity were preceded by a superflood 3400–1900 years ago that eroded the pool-fills to bedrock. The resilience of the pool-fills was illustrated by the passage of a 1-in-100-year flood in 1992, which caused only minor erosion. The presence of pool-fills may provide a window to past phases of river activity that cannot be extracted from either historical records/observations or palaeoflood slackwater sediment analyses. The formation and sedimentary preservation potential of these landforms reflect a combination of hydraulic and structural influences, but the occurrence of high-magnitude floods exerts the dominant control
R.C. Farrell Store
No full textPhotograph - People standing in front of R.C. Farrell, General Merchant store, Athabasca, Alberta. Left to right: Lance Smith, Louis Menard, Romeo Farrell, Athela LaRue Farrell, and Ray Vari
A Review of: Biobloc Therapy, by John R.C. Mew
No full textThis text, written and published by its British author, John R.C. Mew, details an integrated orthodontic and orofacial myofunctional treatment approach entitled Biobloc Therapy [...
Experimental Research and Numerical Analysis on the Law of Deteriorated Performance for R.C. Frame Structure with Seismic Damages under Elevated Temperature (part II)
No full textThe cracks were pre-settled to the R.C. frame structure caused by earthquake which was defined as the damage index ω during the modeling process with analysis software-ANASYS. The temperature field contour curve were calculated for the column and beam, the law of deteriorated bearing capacity with time for the R.C. frame structure under elevated temperature were brought forward，which can adapt to R.C. frame structure with different damage index ω caused by earthquake.The relationship between ω and deteriorated bearing capacity for R.C. frame structure was also given, which was proved to be effective and correct according to comparison with the data recorded from the elevated temperature experiment designed by author.</jats:p
Internal Friction in The Region of The Grain Boundary Peaks in Pure Zirconium and Dilute Zirconium Alloys
Get PDFTitle: Internal Friction in The Region of The Grain Boundary Peaks in Pure Zirconium and Dilute Zirconium Alloys, Author: R.C. Robinson, Location: ThodeInternal friction, in the region of the
grain boundary peaks, has been examined in nominally
pure zirconium and dilute zirconium alloys. Experimental
observations were made using both torsion and
reed internal friction pendulums. The effect of various
heat treatments on the peaks were investigated. Strain
amplitude dependent damping in the region of the Low
Temperature Peak was observed. A qualitative model
is presented to explain the experimental observations.ThesisMaster of Engineering (ME
De Fast-Fourier Transform: Het gebruik van de routine van R.C. Singleton
No full textDoel van dit rapport is de lezer inzicht te verschaffen in het gebruik van de FFT-routine van R.C. Singleton zoals die in het rekencentrum van de T.H. - Delft in gebruik is. Voor een beschrijving van de werking van deze routine wordt verwezen naar het in de literatuurlijst vermelde artikel van Singleton (Lit. 1). Met nadruk wordt erop gewezen dat er meerdere FFT-routines in omloop zijn die alle anders werken en daarom in gebruik kunnen verschillen. Het onderhavige rapport beschrijft uitsluitend het gebruik van de routine van Singleton. Als laatste punt in deze inleiding wordt speciaal het boek van Brigham genoemd (Lit. 2) waarin zeer veel informatie te vinden is over het gebruik van de FFT-methodeHydraulic EngineeringCivil Engineering and Geoscience
Scattering approach to fidelity decay in closed systems and parametric level correlations
No full textScutellaria sipilensis Cuevas (Lamiaceae) is proposed as a new species from Jalisco, Mexico, which is accommodated within section Cardinales Epling or in the species group "speciosa" as defined by Paton. The species is related to S. longifolia Benth., S. glabra Leonard, S. saslayensis A. Pool, and S. rosei Fernald, from which it differs by its widely ovate leaves, trichomes of greater size, persistent bracts, and in general by its much smaller floral structures. " 2010 Missouri Botanical Garden.",,,,,,"10.3417/2009035",,,"http://hdl.handle.net/20.500.12104/44381","http://www.scopus.com/inward/record.url?eid=2-s2.0-78650098809&partnerID=40&md5=5319dcb8efb63d0fff86951e1ab787a
Derivation of forces acting on the liquid weld metal based on arc pressure measurements produced using alternating shielding gases in the GTAW process
No full textAs part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on the gas tungsten arc and gas metal arc welding processes, a comparison between arc pressures produced using argon, helium, alternating gases and GTAW-P has been conducted. The alternating shielding gas process is reported to create a dynamic stirring action within the liquid weld metal as a result of three independent phenomena: a) variation in weld pool fluidity, b) arc pressure variation, and c) arc pressure peaking. These effects have been the basis of previous advantages associated with the process, however these phenomena have not previously been verified and are based solely on theoretical assumptions. Arc pressure measurements are presented which allowed for the numerical derivation of various forces acting on the liquid weld metal in order to estimate the flow vectors present when each shielding gas is present
Scutellaria sipilensis (Lamiaceae), a new species from Western Mexico [Scutellaria sipilensis (Lamiaceae), una Especie Nueva para el Occidente de Mxico]
No full textScutellaria sipilensis Cuevas (Lamiaceae) is proposed as a new species from Jalisco, Mexico, which is accommodated within section Cardinales Epling or in the species group "speciosa" as defined by Paton. The species is related to S. longifolia Benth., S. glabra Leonard, S. saslayensis A. Pool, and S. rosei Fernald, from which it differs by its widely ovate leaves, trichomes of greater size, persistent bracts, and in general by its much smaller floral structures. © 2010 Missouri Botanical Garden
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