51,049 research outputs found
Surface conforming thermal/pressure seal
An assembly is disclosed for sealing a variable gap between the surface of element and a second element in movable relation to it. A seal housing is attached to the second element for movement therewith and has a sealing surface. At least one elongated seal member carried by the housing has first and second conjugate sealing surfaces. The first sealing surface is for rubbing and sealing engagement with the first element surface and the second sealing surface is for sliding and sealing engagement with the housing sealing surface. A biasing assembly may be carried by the housing for biasing the first and second conjugate sealing surfaces of the sealing member toward sealing engagement with the first element surface and housing sealing surface, respectively
The dominant X-ray wind in massive star binaries
We investigate which shocked wind is responsible for the majority of the
X-ray emission in colliding wind binaries, an issue where there is some
confusion in the literature, and which we show is more complicated than has
been assumed. We find that where both winds rapidly cool (typically close
binaries), the ratio of the wind speeds is often more important than the
momentum ratio, because it controls the energy flux ratio, and the faster wind
is generally the dominant emitter. When both winds are largely adiabatic
(typically long-period binaries), the slower and denser wind will cool faster
and the stronger wind generally dominates the X-ray luminosity.Comment: 4 pages, 1 figure, accepted by A&A Letter
"Crunch my Heart! It Falls for You: Re-theorizing Chocolate Gift-Giving as Carnal Singularity Across Language Contexts
âDo one, teach oneâ : the new paradigm in general surgery residency training
Peer reviewedPreprin
Background and Characteristics of our Dispute Resolution Program
Report submitted to the Commission on the Future of Worker-Management Relations.Report_Stevens_092894.pdf: 2336 downloads, before Oct. 1, 2020
Portable electrophoresis apparatus using minimum electrolyte
An electrophoresis unit for use in conducting electrophoretic analysis of specimens is described. The unit includes a sealable container in which a substrate mounted specimen is suspended in an electrolytic vapor. A heating unit is employed to heat a supply of electrolyte to produce the vapor. The substrate is suspended within the container by being attached between a pair of clips which also serve as electrodes to which a direct current power source may be connected
An analysis and evaluation of the relationship between civilian-Navy interest groups and the Navy's public information program.
Thesis (M.S.)--Boston Universit
Preaspirated /pp tt kk/ in standard Italian
This paper investigates preaspiration of geminate stops in Standard Italian /pp tt kk/. We first compare voiceless stops produced in isolated words according to speaker sex and then region (Northern, Central and Southern Italy). We find that the frequency and duration of preaspiration remain relatively stable across these sociophonetic categories. Given these patterns we suggest that the appearance of preaspirated stops is conditioned primarily by phonetic (consonant place, vowel type, lexical stress) rather than the sociophonetic factors under consideration
The Cluster Wind from Local Massive Star Clusters
Results of a study of the theoretically predicted and observed X-ray
properties of local massive star clusters are presented, with a focus on
understanding the mass and energy flow from these clusters into the ISM via a
cluster wind. A simple theoretical model, based on the work of Chevalier &
Clegg (1985), is used to predict the theoretical cluster properties, and these
are compared to those obtained from recent Chandra observations. The model
includes the effect of lower energy transfer efficiency and mass-loading. In
spite of limited statistics, some general trends are indicated; the observed
temperature of the diffuse X-ray emission is lower than that predicted from the
stellar mass and energy input rates, but the predicted scaling of X-ray
luminosity with cluster parameters is seen. The implications of these results
are discussed.Comment: 9 pages, 6 figues, accepted for publication in MNRA
- âŠ