50,006 Hits in 1.5 sec


1971 Notes and Queries  
MICHAEL WILDING. University of Sydney. SCOTTISH MEMBERS OF PARLIAMENT: 1659 ALTHOUGH the researches of H. N.  ...  Butler, &e. of Grayes Inne, had a clubb every night.”  ... 
doi:10.1093/nq/18-8-293 fatcat:3ycbxyr43jcsbkassfeojwok6m

Effect of charged dislocation scattering on electrical and electrothermal transport inn-type InN

Nate Miller, Eugene E. Haller, Gregor Koblmüller, Chad Gallinat, James S. Speck, William J. Schaff, Michael E. Hawkridge, Kin Man Yu, Joel W. Ager
2011 Physical Review B  
measurements, combined with model calculations including all of the relevant elastic and inelastic scattering mechanisms, are used to quantify the role of charged line defects on electron transport in n-type InN  ...  Because InN growth is exclusively heteroepitaxial, usually on GaN, threading dislocation (TD) densities in InN are very high, typically in the range of 10 9 − 10 11 cm −2 .  ...  Here we present an experimental electrothermal transport study of InN thin films.  ... 
doi:10.1103/physrevb.84.075315 fatcat:rlzn6dcj75eurorghvnj7c4yx4

Ghost condensate inN=1supergravity

Michael Koehn, Jean-Luc Lehners, Burt Ovrut
2013 Physical Review D  
We present the theory of a supersymmetric ghost condensate coupled to N=1 supergravity. This is accomplished using a general formalism for constructing locally supersymmetric higher-derivative chiral superfield actions. The theory admits a ghost condensate vacuum in de Sitter spacetime. Expanded around this vacuum, the scalar sector of the theory is shown to be ghost-free with no spatial gradient instabilities. By direct calculation, the fermion sector is found to consist of a massless chiral
more » ... rmion and a massless gravitino. By analyzing the supersymmetry transformations, we find that the chiral fermion transforms inhomogeneously, indicating that the ghost condensate vacuum spontaneously breaks local supersymmetry with this field as the Goldstone fermion. Although potentially able to get a mass through the super-Higgs effect, the vanishing superpotential in the ghost condensate theory renders the gravitino massless. Thus local supersymmetry is broken without the super-Higgs effect taking place. This is in agreement with, and gives an explanation for, the direct calculation.
doi:10.1103/physrevd.87.065022 fatcat:v5dms2hupjcnxnw6tct5k7be2i

DBI inflation inN=1supergravity

Michael Koehn, Jean-Luc Lehners, Burt A. Ovrut
2012 Physical Review D  
It was recently demonstrated that, when coupled to N=1 supergravity, the Dirac-Born-Infeld (DBI) action constructed from a single chiral superfield has the property that when the higher-derivative terms become important, the potential becomes negative. Thus, DBI inflation cannot occur in its most interesting, relativistic regime. In this paper, it is shown how to overcome this problem by coupling the model to one or more additional chiral supermultiplets. In this way, one obtains effective
more » ... e real scalar field DBI models with arbitrary positive potentials, as well as multiple real scalar field DBI inflation models with hybrid potentials.
doi:10.1103/physrevd.86.123510 fatcat:6fteymtrvvarri5okxt2j7p6au

Leveraged Leasing: An Example of the use of Investment Appraisal Techniques

Michael Sherris
1987 Journal of the Staple Inn Actuarial Society  
An internal rate of return calculation is then performed on the negative cashflows and the net terminal cashflow giving an RM rate of return of 605% p.a. 112 MICHAEL SHERRIS A COMPARISON OF METHODS OF  ... 
doi:10.1017/s0020269x00010094 fatcat:y2wzttaqjbbqjnvmmrf5ci2zma

Influence of InN and AlN concentration on the compositional inhomogeneity and formation of InN-rich regions in In x Al y Ga1−x−y N

Gunnar Kusch, Johannes Enslin, Lucia Spasevski, Tolga Teke, Tim Wernicke, Paul R. Edwards, Michael Kneissl, Robert W. Martin
2019 Japanese Journal of Applied Physics  
We provide evidence that the formation of these InN-rich regions is highly dependent on the AlN and InN composition of the layer and that their formation will strongly affect the performance of In x Al  ...  Cathodoluminescence hyperspectral imaging provided evidence for the formation of nanoscale InN-rich regions.  ...  InN and AlN concentrations.  ... 
doi:10.7567/1347-4065/ab147a fatcat:n3fmmzu7xvh5djq7mymml3hm3q

C-N vs. C-C Bond Photodissociation inN-(tert-butyldiphenylmethyl)aniline

Stylianos Garas, Michael G. Siskos, Antonios K. Zarkadis
2004 International Journal of Photoenergy  
The direct photolysis of the title aniline compoundPh2(Me3C)C-NHPh in acetonitrile with 248 nm laser light results in the dissociation of the C-N bond giving the corresponding (tert-Bu)diphenylmethyl radical1a•and the anilino radicalPhNH•detectable byns-laser flash photolysis (LFP) and ESR spectroscopy. The same radical1a•is also produced from the corresponding (tert-Bu)diphenylmethyl chloridePh2(Me3C)C-Cl either photolytically in MeCN through C-Cl bond homolysis or pulse radiolytically in THF;
more » ... the (tert-Bu)diphenylmethyl cation is also detected, however, at sorter time scales because of its high reactivity in the solvent MeCN. At higher laser pulse intensities the radical1a•is reexcited by a second photon leading through electrocyclization to the 4a,4b-dihydro-9-tert-butylfluorenyl radical (DHBF•) and finally to fluorenyl products. Product analyses of steady state photolyses using GC and GC-MS gave as principal products (tert-Bu)diphenylmethane, aniline and various 9-substituted fluorenyl derivatives, corroborating further the primary C-N bond cleavage and the formation of the radicals1a•andPhNH•. Other conceivable dissociation pathways leading to theC-CMe3or N-H bond rupture were not observed.
doi:10.1155/s1110662x04000303 fatcat:6pylxgm2pfeg3iwvonc7uehvui

Paying Their Way

Innes A. Ferguson, Michael J. Wooldridge
1997 D-Lib Magazine  
Available as [11] Salton, G. and McGill, M. (1983). Introduction to modern information retrieval .  ... 
doi:10.1045/june97-ferguson fatcat:to3twwkxqjd77lgoicvyxmzzn4

Excitation wavelength dependence of terahertz emission from InN and InAs

Grace D. Chern, Eric D. Readinger, Hongen Shen, Michael Wraback, Chad S. Gallinat, Gregor Koblmüller, James S. Speck
2006 Applied Physics Letters  
The authors report on the excitation wavelength dependence of terahertz emission from n-InN and bulk p-InAs pumped with femtosecond pulses tunable from 800 to 1500 nm.  ...  In addition, terahertz radiation from In-and N-face InN samples with bulk carrier concentrations ranging from 10(17) to 10(19) cm(-3) is also investigated, showing a strong dependence of terahertz emission  ...  n-InN.  ... 
doi:10.1063/1.2358938 fatcat:yiu6eodzybbdfcticdaxj2y4ta

Ultrahigh polarimetric image contrast enhancement for skin cancer diagnosis using InN plasmonic nanoparticles in the terahertz range

Michael Ney, Ibrahim Abdulhalim
2015 Journal of Biomedical Optics  
changes in tissue associated with early stages of skin cancer, is demonstrated by numerical modeling to be enhanced by localized surface plasmon resonance (LSPR) effects at the terahertz (THz) range when InN  ...  Figure 4 illustrates that InN and highly doped Si NPs are better than InSb; and since no considerable difference exists between InN and Si, we continue our work with the simpler InN material and set the  ...  Fig. 2 2 Localized surface plasmon resonance dominated extinction cross section for InN, InSb, and Si and for Parylene-C coated InN, InSb, and Si NPs with core radius of 5.5 nm embedded in the epidermis  ... 
doi:10.1117/1.jbo.20.12.125007 pmid:26720872 fatcat:htcxojajl5ardlxztl342a444i

Instantons and wormholes inN=2supergravity

Marco Chiodaroli, Michael Gutperle
2009 Physical Review D  
In this paper, we construct Euclidean instanton and wormhole solutions in d=4, N=2 supergravity theories with hypermultiplets. The analytic continuation of the hypermultiplet action, involving pseudoscalar axions, is discussed using the approach originally developed by Coleman which determines the apparence of boundary terms. In particular, we investigate the conditions obtained by requiring the action to be positive-definite once the boundary terms are taken into account. The case of two
more » ... ultiplets parameterizing the coset G_2,2/SU(2)× SU(2) is studied in detail. Orientifold projections which reduce the supersymmetry to N=1 are also discussed.
doi:10.1103/physrevd.79.085023 fatcat:5ihbeuzilzh6hj6aqwmlzlyewu

Robert Traba, Andreas Lawaty, Michael G. Muller, Andrzej Mencwel, Hubert Orłowski, Rok 1945 (Nie-) Powroty. Inne opowieści o historii Polski, Teka Refleksji, red. Robert Traba, Kancelaria Adwokacka Tomasz Kopoczyński, Gdynia 2017, ss. 188

Ryszard Tomkiewicz
2018 Komunikaty Mazursko-Warmińskie  
Esej o doświadczeniu i pamięci roku 1945, Andreas Lawaty, Rozstania po powrotach, Michael G. Müller, Kiedy skończyła się historia starego Gdańska?, Andrzej Mencwel, Mała niania w Górach Olbrzymich).  ... 
doi:10.51974/kmw-135065 fatcat:6qdtimr3kfec3bi6mvrs5dcemq

Gigahertz spin noise spectroscopy inn-doped bulk GaAs

Georg M. Müller, Michael Römer, Jens Hübner, Michael Oestreich
2010 Physical Review B  
We advance spin noise spectroscopy to an ultrafast tool to resolve high frequency spin dynamics in semiconductors. The optical non-demolition experiment reveals the genuine origin of the inhomogeneous spin dephasing in n-doped GaAs wafers at densities at the metal-to-insulator transition. The measurements prove in conjunction with depth resolved spin noise measurements that the broadening of the spin dephasing rate does not result from thermal fluctuations or spin-phonon interaction, as previously suggested, but from surface electron depletion.
doi:10.1103/physrevb.81.121202 fatcat:5h7n34xkanan5fbyn4pujx65xa

Interplay of Electron and Nuclear Spin Noise inn-Type GaAs

Fabian Berski, Jens Hübner, Michael Oestreich, Arne Ludwig, A. D. Wieck, Mikhail Glazov
2015 Physical Review Letters  
We present spin noise (SN) measurements on an ensemble of donor-bound electrons in ultrapure GaAs:Si covering temporal dynamics over six orders of magnitude from milliseconds to nanoseconds. The SN spectra detected at the donor-bound exciton transition show the multifaceted dynamical regime of the ubiquitous mutual electron and nuclear spin interaction typical for III-V based semiconductor systems. The experiment distinctly reveals the finite Overhauser-shift of an electron spin precession at
more » ... ro external magnetic field and a second contribution around zero frequency stemming from the electron spin components parallel to the nuclear spin fluctuations. Moreover, at very low frequencies features related with time-dependent nuclear spin fluctuations are clearly resolved making it possible to study the intricate nuclear spin dynamics at zero and low magnetic fields. The findings are in agreement with the developed model of electron and nuclear SN.
doi:10.1103/physrevlett.115.176601 pmid:26551132 fatcat:i3zfwyc23jdwverislgusaw27q

In-polar InN grown by plasma-assisted molecular beam epitaxy

Chad S. Gallinat, Gregor Koblmüller, Jay S. Brown, Sarah Bernardis, James S. Speck, Grace D. Chern, Eric D. Readinger, Hongen Shen, Michael Wraback
2006 Applied Physics Letters  
GaN buffer layers grown in the Ga-droplet regime prior to the InN deposition significantly improved the surface morphology of InN films grown with excess eScholarship provides open access, scholarly publishing  ...  A surface electron accumulation layer of 5.11x10(13) cm(-2) is measured for In-polar InN.  ...  Readinger, Hongen Shen, and Michael Wraback U.S.  ... 
doi:10.1063/1.2234274 fatcat:wx2l3mp5rrahjiuna7zvcya36e
« Previous Showing results 1 — 15 out of 50,006 results