1,617 research outputs found
Lattice study on two-color QCD with six flavors of dynamical quarks
We study the dynamics of SU(2) gauge theory with NF=6 Dirac fermions by means
of lattice simulation to investigate if they are appropriate to realization of
electroweak symmetry breaking. The discrete analogue of beta function for the
running coupling constant defined under the Schroedinger functional boundary
condition are computed on the lattices up to linear size of L/a=24 and preclude
the existence of infrared fixed point below 7.6. Gluonic observables such as
heavy quark potential, string tension, Polyakov loop suggest that the target
system is in the confining phase even in the massless quark limit.Comment: 7 pages, 9 figures, Proceedings of The 30th International Symposium
on Lattice Field Theory, June 24-29, 2012, Cairns, Australi
Permanent Superhumps in V1974 Cyg
We present results of 32 nights of CCD photometry of V1974 Cygni, from the
years 1994 and 1995. We verify the presence of two distinct periodicities in
the light curve: 0.0812585 day~1.95 hours and 0.0849767 d~2.04 hr. We establish
that the shorter periodicity is the orbital period of the underlying binary
system. The longer period oscillates with an average value of |dot(P)| ~
3x10^(7)--typical to permanent superhumps. The two periods obey the linear
relation between the orbital and superhump periods that holds among members of
the SU Ursae Majoris class of dwarf novae. A third periodicity of 0.083204
d~2.00 hr appeared in 1994 but not in 1995. It may be related to the recently
discovered anti-superhump phenomenon. These results suggest a linkage between
the classical nova V1974 Cyg and the SU UMa stars, and indicate the existence
of an accretion disk and permanent superhumps in the system no later than 30
months after the nova outburst. From the precessing disk model of the superhump
phenomenon we estimate that the mass ratio in the binary system is between 2.2
and 3.6. Combined with previous results this implies a white dwarf mass of
0.75-1.07 M sun.Comment: 11 pages, 10 eps. figures, Latex, accepted for publication in MNRA
Expression of membrane-anchored matrix metalloproteinase inhibitor reversion inducing cysteine rich protein with kazal motifs in murine cell lines
Aim: It has been demonstrated that the endogenous matrix metalloproteinases (MMPs) inhibitor reversion inducing cysteine rich protein with Kazal motifs (RECK) is a reliable prognostic marker for detecting several types of tumors. However, the RECK expressions in most of the normal and neoplastic tissues were extremely low, and to measure its expression is quite complicated. The purpose of the present study is to establish an easy method to quantify murine RECK mRNA expression for use in future experimental studies. Subsequently, in order to verify the reliability of the established quantification technique, we examined the change in RECK expression and gelatinase secretion in tumor cells when stimulated by the extracellular matrix. Methods: Several murine tumor cells were used in the present study. The real-time polymerase chain reaction (PCR) method and measurement conditions for murine RECK mRNA were studied using these tumor cells. Gelatinase activities were also examined by gelatin zymography. Results: Murine RECK mRNA expression was accurately quantified using real-time PCR. Among the tumor cells used in the study, osteosarcoma cells showed significantly higher RECK mRNA expression than the others. The RECK expression in the osteosarcoma cells was down-regulated by contact with matrigel-coated culture flasks due to increased secretion of gelatinases. Conclusion: The real-time PCR method employed in our study is useful to quantify RECK expression.ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ½Π΄ΠΎΠ³Π΅Π½Π½ΡΠΉ ΠΈΠ½Π³ΠΈΠ±ΠΈΡΠΎΡ ΠΌΠ°ΡΡΠΈΠΊΡΠ½ΡΡ
ΠΏΡΠΎΡΠ΅ΠΈΠ½Π°Π· (MMΠ) RECK ΠΌΠΎΠΆΠ΅Ρ ΡΠ»ΡΠΆΠΈΡΡ Π½Π°Π΄Π΅ΠΆΠ½ΡΠΌ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ
ΠΌΠ°ΡΠΊΠ΅ΡΠΎΠΌ Π΄Π»Ρ Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
ΡΠΈΠΏΠΎΠ² ΠΎΠΏΡΡ
ΠΎΠ»Π΅ΠΉ, ΠΎΠ΄Π½Π°ΠΊΠΎ Π΅Π³ΠΎ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΡ Π² Π±ΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²Π΅ Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΡΡ
ΠΈ Π½Π΅ΠΎΠΏΠ»Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΊΠ°Π½Π΅ΠΉ
ΠΊΡΠ°ΠΉΠ½Π΅ Π½ΠΈΠ·ΠΊΠ°Ρ, ΠΏΠΎΡΡΠΎΠΌΡ Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡ ΡΠ»ΠΎΠΆΠ½ΠΎΡΡΠΈ, ΡΠ²ΡΠ·Π°Π½Π½ΡΠ΅ Ρ Π΄Π΅ΡΠ΅ΠΊΡΠΈΠ΅ΠΉ ΡΠ°ΠΊΠΎΠ²ΠΎΠΉ. Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ
ΠΌΠ΅ΡΠΎΠ΄Π° ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ ΠΌΠ ΠΠ Π΄Π»Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
. ΠΠ»Ρ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅Π³ΠΎ
ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΡ Π½Π°Π΄Π΅ΠΆΠ½ΠΎΡΡΠΈ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ RECK ΠΈ ΡΠ΅ΠΊΡΠ΅ΡΠΈΠΈ ΠΆΠ΅Π»Π°ΡΠΈΠ½Π°Π· Π²
ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΡΡ
ΠΊΠ»Π΅ΡΠΊΠ°Ρ
ΠΏΡΠΈ ΡΡΠΈΠΌΡΠ»ΡΡΠΈΠΈ Π²Π½Π΅ΠΊΠ»Π΅ΡΠΎΡΠ½ΡΠΌ ΠΌΠ°ΡΡΠΈΠΊΡΠΎΠΌ. ΠΠ΅ΡΠΎΠ΄Ρ: Π² ΡΠ°Π±ΠΎΡΠ΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈ Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΎ Π»ΠΈΠ½ΠΈΠΉ ΠΎΠΏΡΡ
ΠΎΠ»Π΅Π²ΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ ΠΌΡΡΠΈ, Π² ΠΊΠΎΡΠΎΡΡΡ
ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΡ ΠΌΠ ΠΠ RECK Π°Π½Π°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΠ¦Π Π² ΡΠ΅ΠΆΠΈΠΌΠ΅ ΡΠ΅Π°Π»ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ,
Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΆΠ΅Π»Π°ΡΠΈΠ½Π°Π· β ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π·ΠΈΠΌΠΎΠ³ΡΠ°ΡΠΈΠΈ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ: ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΡ ΠΌΠ ΠΠ RECK ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ ΠΎΡΠ΅Π½ΠΈΠ»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ
ΠΠ¦Π Π² ΡΠ΅ΠΆΠΈΠΌΠ΅ ΡΠ΅Π°Π»ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ, ΠΏΡΠΈΡΠ΅ΠΌ ΡΡΠ΅Π΄ΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π½ΡΡ
ΠΊΠ»Π΅ΡΠΎΡΠ½ΡΡ
Π»ΠΈΠ½ΠΈΠΉ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π²ΡΡΠΎΠΊΠΈΠΉ ΡΡΠΎΠ²Π΅Π½Ρ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ
RECK Π²ΡΡΠ²ΠΈΠ»ΠΈ Π² ΠΊΠ»Π΅ΡΠΊΠ°Ρ
ΠΎΡΡΠ΅ΠΎΡΠ°ΡΠΊΠΎΠΌΡ. ΠΠΊΡΠΏΡΠ΅ΡΡΠΈΡ RECK Π² ΠΊΠ»Π΅ΡΠΊΠ°Ρ
ΠΎΡΡΠ΅ΠΎΡΠ°ΡΠΊΠΎΠΌΡ ΠΏΠΎΠ΄Π°Π²Π»ΡΠ»Π°ΡΡ ΠΏΡΠΈ ΠΊΠΎΠ½ΡΠ°ΠΊΡΠ΅ Ρ ΠΊΡΠ»ΡΡΡΡΠ°Π»ΡΠ½ΡΠΌ
ΠΏΠ»Π°ΡΡΠΈΠΊΠΎΠΌ, ΠΎΠ±ΡΠ°Π±ΠΎΡΠ°Π½Π½ΡΠΌ ΠΌΠ°ΡΡΠΈΠ³Π΅Π»Π΅ΠΌ, Π²ΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠ΅ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΡΠ΅ΠΊΡΠ΅ΡΠΈΠΈ ΠΆΠ΅Π»Π°ΡΠΈΠ½Π°Π·. ΠΡΠ²ΠΎΠ΄Ρ: Π΄Π»Ρ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΉ
ΠΎΡΠ΅Π½ΠΊΠΈ ΡΠΊΡΠΏΡΠ΅ΡΡΠΈΠΈ ΠΌΠ ΠΠ RECK ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ ΠΌΠ΅ΡΠΎΠ΄ ΠΠ¦Π Π² ΡΠ΅ΠΆΠΈΠΌΠ΅ ΡΠ΅Π°Π»ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ
Accessible information and optimal strategies for real symmetrical quantum sources
We study the problem of optimizing the Shannon mutual information for sources
of real quantum states i.e. sources for which there is a basis in which all the
states have only real components. We consider in detail the sources of equiprobable qubit states lying symmetrically around the great
circle of real states on the Bloch sphere and give a variety of explicit
optimal strategies. We also consider general real group-covariant sources for
which the group acts irreducibly on the subset of all real states and prove the
existence of a real group-covariant optimal strategy, extending a theorem of
Davies (E. B. Davies, IEEE. Inf. Theory {\bf IT-24}, 596 (1978)). Finally we
propose an optical scheme to implement our optimal strategies, enough simple to
be realized with present technology.Comment: RevTeX, 16 pages, 4 eps figures with psfig, submitted to Phys. Rev.
A, corrected output error of Fig. 1 in the previous versio
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