7,391 research outputs found
L’élevage du porcelet par la méthode de l'élevage précoce. Par G. Brent, D. Howell, F. Ridgeon et W. F. Smith
No full textAutheville Pierre d', Théret Marcel. L’élevage du porcelet par la méthode de l'élevage précoce. Par G. Brent, D. Howell, F. Ridgeon et W. F. Smith. In: Bulletin de l'Académie Vétérinaire de France tome 130 n°1, 1977. pp. 63-64
Marriage record of Howell, Oscar D. and Hemphill, Nellie Lewis
No full textMarriage license for Oscar D. Howell and Nellie Lewis Hemphill. James F. Winnard was the officiant
Homagnostus Howell 1935
No full text<i>Homagnostus</i> Howell, 1935b <p> <b>Type species.</b> <i>Agnostus pisiformis</i> var. <i>obesus</i> Belt, 1867 by original designation from Wales.</p>Published as part of <i>Taylor, John F., Loch, James D. & Repetski, John E., 2024, Taxonomy and stratigraphic distribution of Lotagnostus (Agnostida: Agnostidae) and associated trilobites and conodonts in the Upper Cambrian (Furongian) of Laurentia, pp. 1-66 in Zootaxa 5422 (1)</i> on page 53, DOI: 10.11646/zootaxa.5422.1.1, <a href="http://zenodo.org/record/10805617">http://zenodo.org/record/10805617</a>
A statistical analysis of circumstellar material in Type Ia supernovae
No full textA key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na I D absorption lines, interpreted as evidence of circumstellar material surrounding the progenitor system. The origin of this material is controversial, but the simplest explanation is that it results from previous mass-loss in a system containing a white dwarf and a non-degenerate companion star. We present new single-epoch intermediate-resolution spectra of 17 low-redshift SNe Ia taken with XShooter on the European Southern Observatory Very Large Telescope. Combining this sample with events from the literature, we confirm an excess (∼20 per cent) of SNe Ia displaying blueshifted narrow Na I D absorption features compared to redshifted Na I D features. The host galaxies of SNe Ia displaying blueshifted absorption profiles are skewed towards later-type galaxies, compared to SNe Ia that show no Na I D absorption and SNe Ia displaying blueshifted narrow Na I D absorption features have broader light curves. The strength of the Na I D absorption is stronger in SNe Ia displaying blueshifted Na I D absorption features than those without blueshifted features, and the strength of the blueshifted Na I D is correlated with the B − V colour of the SN at maximum light. This strongly suggests the absorbing material is local to the SN. In the context of the progenitor systems of SNe Ia, we discuss the significance of these findings and other recent observational evidence on the nature of SN Ia progenitors. We present a summary that suggests that there are at least two distinct populations of normal, cosmologically useful SNe Ia
Configuration and Perturbation Dependence of the Neutral Point in JET
No full textPreviously the existence of a Neutral Point was clearly demonstrated for plasma disruptions following radiative collapses in JET. This paper extends such studies to different configurations and different perturbations (ELMs). The result is that a Neutral Point for ELM-type perturbations does not exists in the explored range. Nevertheless, a spatial dependence of the excitation of the unstable mode can be found in the experimental data. This feature can give useful information about simplified ELM modelling for control purposes
Investigation into the design and optimisation of multideck refrigerated display cases
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The refrigeration energy load in a modern day supermarket makes up a large proportion of the total energy bill. Better design of refrigerated display cases would reduce this load and also have a corresponding effect on the running costs of the refrigeration plant. Further enhancements such as the reduction of air overspill from the case would also influence the aisle temperatures and therefore the comfort levels in the store. This research project uses the technique of computational fluid dynamics (CFD) to investigate the contemporary design of a vertical multideck refrigerated display case. From a two dimensional computational model conclusions were drawn as to the principles of operation of the case. During the course of the project, a custom designed experimental facility was constructed, capable of testing the display case according to the relevant test standards. Using this facility, experimental validation was carried on a number of the design modifications to assess the actual refrigeration load against that predicted by the CFD model. The success of this validation allowed further work into the feasibility of certain design changes by making modifications to the CFD model. The work presented in this thesis makes a contribution to the global effort towards the reduction of the energy consumption by retail refrigeration systems. It does this by showing that possibilities do exist for an improvement in the energy efficiency of multideck refrigerated display cases and that CFD provides a useful tool towards this goal. It also demonstrates the design modifications which proved to yield a saving in energy. These were a reduction in the mass flow rate of air around the case, the inclusion of a honeycomb section on the air curtain outlet of the case the addition of a front upstand and the introduction of a second air curtain thus applying a velocity gradient across the curtain.This work was supported by the Engineering and Physical Sciences Research Council and Safeway Stores Plc
Apollo 15 A. D. Little Laser Ranging Retro Reflector contractor parts list
No full textParts and materials used by A. D. Little, Inc. in the 300 corner LRRR Array Assemblies A & B are listed on the attached sheets.prepared by F. Howell.Revision no.
Letter from L. F. Howell, Alabama Polytechnic Institute, Auburn, Alabama, to H. D. Clayton, Clayton, Alabama, June 4, 1886
No full textRhinolophus maendeleo Kock, Csorba and Howell 2000
No full textRhinolophus cf. maendeleo Kock, Csorba and Howell 2000 Two specimens assigned to this recently described species were recorded from Mount Namuli in northern Mozambique. They all had a rounded connecting process, similar to R. clivosus, but the 1st upper premolar was small and situated in the toothrow (unlike R. clivosus). The skull was slender and narrow in shape with gracile zygomatic arches (and MW greater or equal to ZYW — see Table 2), undeveloped sagittal and lambdoid crests, a long rostrum with bulbous anterior narial inflation in relation to posterior inflations (giving concave rostral profile) as described by Kock et al. (2000); cranial measurements match closely the values for the holotype and paratype of this species recorded by these authors. However, slight differences between the Mount Namuli male (DM 10833) and the R. maendeleo holotype are present in baculum shape (not shown) and the presence of a bony bar closing the infraorbital foramen (open in holotype and paratype of R. maendeleo but only on the right hand side of one Mount Namuli specimen (DM10833) and on neither side in DM10839). These differences warrant further analyses to determine whether these individuals represent an undescribed species, preferably including molecular comparisons of the Mount Namuli specimens with the holotype and/or paratype. Specimens from Mount Gorongosa and Nyika Plateau of Malawi may also be referable to this species and should be examined (F. P. D. Cotterill, personal communication). Field measurements: FA (adult male) 47.5 (1); FA (adult female) 48.9 (1). Nose-leaf width was 8.7 for the male and 8.3 for the female.Published as part of Monadjem, Ara, Schoeman, M. Corrie, Reside, April, P Io, Dorothea V., Stoffberg, Samantha, Bayliss, Julian, (Woody) Cotterill, F. P. D., Curran, Michael, Kopp, Mirjam & Taylor, Peter J., 2010, A recent inventory of the bats of Mozambique with documentation of seven new species for the country, pp. 371-391 in Acta Chiropterologica 12 (2) on pages 378-379, DOI: 10.3161/150811010X537963, http://zenodo.org/record/394458
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