10,886 research outputs found
Data for: ROSA/LSTF test and RELAP5 code analyses on primary feed-and-bleed operation during total loss-of-feedwater transient of PWR
No full textExperimental data with the LSTF (large-scale test facility) and calculated results by RELA5/MOD3.3 code, used to support the findings of this study, are available from the corresponding author (Takeshi Takeda) upon request
Zehntneriana Ng & Takeda 2010
No full textGenus <i>Zehntneriana</i> Ng & Takeda, 2010 <p> <i>Zehntneria</i> Takeda, 1972: 35 (name pre-occupied by <i>Zehntneria</i> Brunner Von Wattenwyl, 1907 [Insecta: Phasmida]). <i>Zehntneriana</i> Ng & Takeda, 2010: 49 (replacement name for <i>Zehntneria</i> Takeda, 1972).</p>Published as part of <i>Ng, Peter K. L. & Lin, Chia-Wei, 2015, Zehntneriana serrata n. sp., a new species of pilumnid crab from southern Taiwan (Crustacea, Decapoda, Brachyura), pp. 263-271 in Zootaxa 3915 (2)</i> on page 264, DOI: 10.11646/zootaxa.3915.2.5, <a href="http://zenodo.org/record/243386">http://zenodo.org/record/243386</a>
Palmyria Galil & Takeda 1986
No full textGenus Palmyria Galil & Takeda, 1986 Palmyria Galil & Takeda 1986: 168 (type species Maldivia palmyrensis Rathbun, 1923, by original designation; gender feminine)Published as part of PETER CASTRO, PETER K. L. NG & SHANE T. AHYONG, 2004, Phylogeny and systematics of the Trapeziidae Miers, 1886 (Crustacea: Brachyura), with the description of a new family, pp. 1-70 in Zootaxa 643 on page 21, DOI: 10.5281/zenodo.15885
Hypocolpus kurodai Takeda 1980
No full textHypocolpus kurodai Takeda, 1980 (Fig. 3E, F) Hypocolpus kurodai – Takeda & Manuel, 2000: 153, Fig. 3D, E. Material examined. – 1 male, 21.0 × 13.5 mm (NMCR-6609), Kasili, Santa Cruz, Marinduque, coll. J. Cabrera, R. Garcia & R. Velarde, 21 Aug.1979. Remarks. – This little-known species has only been recorded from Japan (type locality) and the Philippines. The specimen reported here is the same one recorded by Takeda & Manuel (2000) in their report on some rare Philippine crabs.Published as part of Mendoza, Jose Christopher E. & Ng, Peter K. L., 2010, The Euxanthine Crabs (Crustacea: Brachyura: Xanthidae) Of The Philippines, pp. 57-74 in Raffles Bulletin of Zoology 58 (1) on page 65, DOI: 10.5281/zenodo.534242
Systematic review of the impact of emissions from aviation on current and future climate
No full textAviation emissions have an impact on the global climate, and this is consequently an active area of research worldwide. By adapting replicable and transparent systematic review methods from the field of evidence-based medicine, we aim to synthesise available data on the effects of aviation emissions on climate. From these data, we aim to calculate lower and upper bounds for estimates of the effect of aviation on climate in an objective manner.For the systematic review an appropriate protocol was developed and applied by two independent reviewers, to identify research that met the inclusion criteria. These included all aviation types, original research studies, climate models with aviation as a specific component, with outcomes for emissions, radiative forcing, global warming potential and/or surface temperature changes. These studies were prioritised and data extracted using a standard process. The 35 studies reviewed here reported radiative forcing, global warming potential and/or temperature changes as outcomes, allowing direct comparisons to be made.Tabulated results and a narrative commentary were provided for overall effects on climate, and the individual effects of carbon dioxide, water, contrails, cirrus clouds, ozone, nitrogen oxides, methane, soot and sulphur oxides. Lower and upper bounds for these effects, and their relative contributions compared to overall radiative forcing and surface temperature changes, have been described.This review shows that the most recent estimates for the contribution of aviation to global climate are highly dependent on the level of scientific understanding and modelling, and predicted scenarios for social and economic growth. Estimates for the future contribution of aviation to global radiative forcing in 2015 range from 5.31% to 8.04%. For 2050 the estimates have a wider spread, from 2.12% to 17.33%, the latter being for the most extreme technology and growth scenario. These global estimates should be considered within the context of uncertainties in accounting for the direct and indirect effects of different contributions. Variations between lower and upper bounds for estimates of radiative forcing are relatively low for carbon dioxide, around 131% to 800% for cirrus clouds effects, and 1044% for soot. Advances in climate research, particularly in the area of contrail and cloud effects, has led to some revision of the 1999 IPCC estimates1, and demonstrates that the research community is actively working to further understand the underlying science.The approaches assumptions, limitations and future work were discussed in detail. We have demonstrated how the systematic review methodology can be applied to climate science, in a replicable and transparent manner
Cavity tones by computational aeroacoustics
No full textThe flow past open cavities is a problem that is encountered in many engineering applications and can result in intense acoustic tones. The flow physics and acoustics of cavity configurations are complex and computational simulation techniques provide an opportunity to gain further understanding and provide a tool to predict not only cavity tone frequencies but their amplitude. In this paper, we describe the available techniques for performing computational aeroacoustic simulations of cavity flows, and review recent applications for the prediction and control of cavity tones in subsonic, transonic and supersonic regimes
Beamforming in highly reverberant wind tunnels possibilities and limitations
No full textClosed-section hard-walled wind tunnels are routinely used for aerodynamic testing during the early stages of vehicle design. The use of microphone arrays and beamforming processing in such environments can yield useful source localisation information; yet there are concerns as to the consistency of quantitative results from such methods when compared to anechoic openjet tunnel testing. Higher background noise levels, microphones in contact with the turbulent boundary layer, and the highly reverberant nature of the measuring environment are of particular concern. In this paper we show that accurate results in closed-section wind tunnels are still possible using the cross-spectral matrix diagonal removal (DR) technique, and with dereverberation. With DR, improvements in beamformer’s accuracy up to 10 dB can be achieved when compared to standard beamforming. De-reverberation gives an additional 10 dB improvement, and provided that the noise contamination to the microphone pressure data is somewhat suppressed, errors within §1dB can be expected. Both of these methods do not require any
additional changes to the physical infrastructure of the measuring environment
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