50 research outputs found
X-Ray Emission from Rotating Elliptical Galaxies
The slow inward flow of the hot gas in elliptical galaxy cooling flows is
nearly impossible to detect directly due to instrumental limitations. However,
in rotating galaxies, if the inflowing gas conserves angular momentum, it will
eventually form a disk. The X-ray signature of this phenomenon is a flattening
of the X-ray isophotes in the inner 1-10 kpc region. This effect is observable,
so we have searched for it in X-ray observations of six rotating and
non-rotating early-type galaxies, obtained mainly with the ROSAT PSPC and HRI
imagers. The ellipticities of the X-ray emission never increase toward the
central region, nor are the X-ray ellipticities significantly greater than the
ellipticities for the optical stellar emission. Central ellipticities in excess
of 0.5 were expected in rotating ellipticals whereas values of 0-0.2 are
measured. The failure to detect the expected signature requires a modification
to the standard cooling flow picture, possibly including partial galactic
winds, rapid mass drop-out, or turbulent redistribution of angular momentum.Comment: 34 postscript pages; ApJ, in press (Feb 10,2000
Microfabricated Reference Electrodes and their Biosensing Applications
Over the past two decades, there has been an increasing trend towards miniaturization of both biological and chemical sensors and their integration with miniaturized sample pre-processing and analysis systems. These miniaturized lab-on-chip devices have several functional advantages including low cost, their ability to analyze smaller samples, faster analysis time, suitability for automation, and increased reliability and repeatability. Electrical based sensing methods that transduce biological or chemical signals into the electrical domain are a dominant part of the lab-on-chip devices. A vital part of any electrochemical sensing system is the reference electrode, which is a probe that is capable of measuring the potential on the solution side of an electrochemical interface. Research on miniaturization of this crucial component and analysis of the parameters that affect its performance, stability and lifetime, is sparse. In this paper, we present the basic electrochemistry and thermodynamics of these reference electrodes and illustrate the uses of reference electrodes in electrochemical and biological measurements. Different electrochemical systems that are used as reference electrodes will be presented, and an overview of some contemporary advances in electrode miniaturization and their performance will be provided
Deliuerance from the graue A sermon preached at Saint Maries Spittle in London, on Wednesday in Easter weeke last, March 28. 1627. By Tho. Goffe, Batchelor of Diuinitie, lately student of Christ-Church in Oxford.
The raging Turke, or, Baiazet the Second A tragedie vvritten by Thomas Goffe, Master of Arts, and student of Christ-Church in Oxford, and acted by the students of the same house.
The couragious Turke, or, Amurath the First A tragedie. Written by Thomas Goffe Master of Arts, and student of Christ-Church in Oxford, and acted by the students of the same house.
The careles shepherdess a tragi-comedy acted before the King & Queen, and at Salisbury-Court, with great applause / written by T.G. ; with an alphebeticall catologue of all such plays that ever were printed.
The tragedy of Orestes, vvritten by Thomas Goffe Master of Arts, and student of Christs Church in Oxford: and acted by the students of the same house
Oratio funebris habita in ecclesia Cathedrali Christi Oxon in obitum viri omni ĂŠvo dignissimi Gulielmi Goodvvin istius ecclesiĂŠ decani, s. theol. Doctoris. A Tho. Goffe Artium Magistro ex Ăde Christi.
Vltima linea Savilii sive In obitum clarissimi domini Henrici Savilii equitis aurati, mathematicorum facilåe principis, nuperrimåe Collegij Mertonensis custodis vigilantissimi, Etonensis iuxta Windsore pr”positi dignissimi, & benefactoris de Vniversitate Oxoniensi optimåe meriti [electronic resource]
In verse, with a funeral oration by Thomas Goffe.Signatures: pip4s (-pi4) *p4s 2*p1s (=pi4) A-Fp4s.The last leaf is blank.Reproduction of the original in Cambridge University Library.STC (2nd ed.)Madan, I, p. 118.Case, A.E. Poetical miscellanies, 54.Electronic reproduction