1,092 research outputs found
Correlation between projection of the ear, the inferior crus, and the antihelical body: Analysis based on computed tomography
This is a preprint of an article whose final and definitive form has been published in the SCANDINAVIAN JOURNAL OF PLASTIC AND RECONSTRUCTIVE SURGERY AND HAND SURGERY © 2007 copyright Taylor & Francis; SCANDINAVIAN JOURNAL OF PLASTIC AND RECONSTRUCTIVE SURGERY AND HAND SURGERY is available online at: http://www.informaworld.com/openurl?genre=article&PISSN=0284-4311&volume=41&issue=6&spage=288ArticleSCANDINAVIAN JOURNAL OF PLASTIC AND RECONSTRUCTIVE SURGERY AND HAND SURGERY. 41(6): 288-292 (2007)journal articl
New Seiberg Dualities from N=2 Dualities
We propose a number of new Seiberg dualities of N=1 quiver gauge theories.
The new Seiberg dualities originate in new S-dualities of N=2 superconformal
field theories recently proposed by Gaiotto. N=2 S-dual theories deformed by
suitable mass terms flow to our N=1 Seiberg dual theories. We show that the
number of exactly marginal operators is universal for these Seiberg dual
theories and the 't Hooft anomaly matching holds for these theories. These
provide strong evidence for the new Seiberg dualities. Furthermore, we study in
detail the Klebanov-Witten type theory and its dual as a concrete example. We
show that chiral operators and their non-linear relations match between these
theories. These arguments also give non-trivial consistency checks for our
proposal.Comment: 31 pages, 7 figures. v2:version to appear in JHE
Gauge Mediation with D-term SUSY Breaking
We construct a gauge-mediation model with a D-term supersymmetry (SUSY)
breaking. R-symmetry breaking necessary for generating the SUSY standard-model
gaugino masses is given by gaugino condensation of a strongly coupled gauge
theory in the hidden sector. The energy scale of the strong dynamics of the
hidden sector gauge theory should be around the messenger mass scale M, or
otherwise perturbative calculations would be reliable and would lead to
negative soft mass squared for squarks and sleptons. Thus, all the mass scales
are controlled by a virtually single parameter, \sqrt{D}/M. This model covers a
very wide range of gravitino mass, m_{3/2} \simeq 1 eV--100 TeV. Possible
embeddings of the model in string theory are also discussed.Comment: 15 pages; v2: comments and references adde
V<sub>H</sub> replacement in rearranged immunoglobulin genes
Examples suggesting that all or part of the V<sub>H</sub> segment of a rearranged V<sub>H</sub>DJ<sub>H</sub> may be replaced by all or part of another V<sub>H</sub> have been appearing since the 1980s. Evidence has been presented of two rather different types of replacement. One of these has gained acceptance and has now been clearly demonstrated to occur. The other, proposed more recently, has not yet gained general acceptance because the same effect can be produced by polymerase chain reaction artefact. We review both types of replacement including a critical examination of evidence for the latter. The first type involves RAG proteins and recombination signal sequences (RSS) and occurs in immature B cells. The second was also thought to be brought about by RAG proteins and RSS. However, it has been reported in hypermutating cells which are not thought to express RAG proteins but in which activation-induced cytidine deaminase (AID) has recently been shown to initiate homologous recombination. Re-examination of the published sequences reveals AID target sites in V<sub>H</sub>-V<sub>H</sub> junction regions and examples that resemble gene conversion
Single- and few-layer graphene growth on stainless steel substrates by direct thermal chemical vapor deposition
Steeping interest on graphene research in basic sciences and applications
emphasizes the need for an economical means of synthesizing it. We report a
method for the synthesis of graphene on commercially available stainless steel
foils using direct thermal chemical vapor deposition. Our method of synthesis
and the use of relatively cheap precursors such as ethanol (CH3CH2OH) as a
source of carbon and SS 304 as the substrate, proved to be economically viable.
Presence of single- and few-layer graphene was confirmed using confocal Raman
microscopy/spectroscopy. X-ray photoelectron spectroscopic measurements were
further used to establish the influence of various elemental species present in
stainless steel on graphene growth. Role of cooling rate on surface migration
of certain chemical species (oxides of Fe, Cr and Mn) that promote or hinder
the growth of graphene is probed. Such analysis of the chemical species present
on the surface can be promising for graphene based catalytic research
Measurement of forward neutral pion transverse momentum spectra for = 7TeV proton-proton collisions at LHC
The inclusive production rate of neutral pions in the rapidity range greater
than has been measured by the Large Hadron Collider forward (LHCf)
experiment during LHC \,TeV proton-proton collision operation in
early 2010. This paper presents the transverse momentum spectra of the neutral
pions. The spectra from two independent LHCf detectors are consistent with each
other and serve as a cross check of the data. The transverse momentum spectra
are also compared with the predictions of several hadronic interaction models
that are often used for high energy particle physics and for modeling
ultra-high-energy cosmic-ray showers.Comment: 18 Pages, 10 figures, submitted to Phys. Rev.
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