6,673 research outputs found
Determination of s(x) and \bar{s}(x) from a global QCD analysis
A new global QCD analysis of DIS data is presented. The \nu Fe and
\bar{\nu}Fe differential cross-section data are included to constrain the
strange component of the nucleon sea. As a result we found a hard strangeness
at high-x and some evidence for an asymmetry between xs(x) and x\bar{s}(x).Comment: 5 pages, 4 figure
Comments on Anomalies and Charges of Toric-Quiver Duals
We obtain a simple expression for the triangle `t Hooft anomalies in quiver
gauge theories that are dual to toric Sasaki-Einstein manifolds. We utilize the
result and simplify considerably the proof concerning the equivalence of
a-maximization and Z-minimization. We also resolve the ambiguity in defining
the flavor charges in quiver gauge theories. We then compare coefficients of
the triangle anomalies with coefficients of the current-current correlators and
find perfect agreement.Comment: 22 pages, 3 figure
D-brane probes on L^{abc} Superconformal Field Theories
We study supersymmetric embeddings of D-brane probes of different
dimensionality in the AdS_5xL^{abc} background of type IIB string theory. In
the case of D3-branes, we recover the known three-cycles dual to the dibaryonic
operators of the gauge theory and we also find a new family of supersymmetric
embeddings. Supersymmetric configurations of D5-branes, representing fractional
branes, and of spacetime filling D7-branes (which can be used to add flavor)
are also found. Stable non supersymmetric configurations corresponding to fat
strings and domain walls are found as well.Comment: 20 pages, LaTeX;v2: minor improvements, references adde
Effects of pasture on carcass composition in Cinta Senese pig
The trial was performed to investigate on the effects of different periods of grass pasture in fattening Cinta Senese pigs; growth performances, carcass characteristics and meat quality were studied. Control group was reared in paddock and fed concentrate, while experimental group grazed on grass pasture with an integration of 1.4 kg/pig/d of concentrate. Initial live weight was not different between the two groups and individual weights were periodically recorded. Animals were slaughtered from 36 to 160 days from the trial beginning. Carcass weight, body measures, backfat thickness, pH45 and pH24 were recorded. After 24 hours of refrigeration, each carcass was dissected into lean, fat and bone cuts. Results didn't show differences between the two groups, revealing that Cinta Senese pigs can profitably utilize pasture on grass even in fattening period
Implications of Hadron Collider Observables on Parton Distribution Function Uncertainties
Standard parton distribution function sets do not have rigorously quantified
uncertainties. In recent years it has become apparent that these uncertainties
play an important role in the interpretation of hadron collider data. In this
paper, using the framework of statistical inference, we illustrate a technique
that can be used to efficiently propagate the uncertainties to new observables,
assess the compatibility of new data with an initial fit, and, in case the
compatibility is good, include the new data in the fit.Comment: 22 pages, 5 figure
Protein kinase CK2 is widely expressed in follicular, Burkitt and diffuse large B-cell lymphomas and propels malignant B-cell growth.
Serine-threonine kinase CK2 is highly expressed and pivotal for survival and proliferation in multiple myeloma, chronic lymphocytic leukemia and mantle cell lymphoma. Here, we investigated the expression of \u3b1 catalytic and \u3b2 regulatory CK2 subunits by immunohistochemistry in 57 follicular (FL), 18 Burkitt (BL), 52 diffuse large B-cell (DLBCL) non-Hodgkin lymphomas (NHL) and in normal reactive follicles. In silico evaluation of available Gene Expression Profile (GEP) data sets from patients and Western blot (WB) analysis in NHL cell-lines were also performed. Moreover, the novel, clinical-grade, ATP-competitive CK2-inhibitor CX-4945 (Silmitasertib) was assayed on lymphoma cells. CK2 was detected in 98.4% of cases with a trend towards a stronger CK2\u3b1 immunostain in BL compared to FL and DLBCL. No significant differences were observed between Germinal Center B (GCB) and non-GCB DLBCL types. GEP data and WB confirmed elevated CK2 mRNA and protein levels as well as active phosphorylation of specific targets in NHL cells. CX-4945 caused a dose-dependent growth-arresting effect on GCB, non-GCB DLBCL and BL cell-lines and it efficiently shut off phosphorylation of NF-\u3baB RelA and CDC37 on CK2 target sites. Thus, CK2 is highly expressed and could represent a suitable therapeutic target in BL, FL and DLBCL NHL
Cumulative structure function in terms of nucleonic wave function of the nucleus
The structure function of the nucleus in the cumulative region is
studied in terms of nucleon degrees of freedom. At high the resulting
expressions are presented as a sum of contributions from few-nucleon
correlations. Two-nucleon correlations are studied in some detail. Spin
variables are averaged out. In the region the structure functions are
calculated for the relativistic interaction proposed by F.Gross {\it et al}.
They are found to fall with faster than the exponential. For Carbon at
, where the method is not rigorously applicable, they turn out to be
rougly twice larger than the experimental data.Comment: text and 2 figures in LaTex, 7 figures in P
On the pulsating strings in AdS_5 x T^{1,1}
We study the class of pulsating strings in AdS_5 x T^{1,1}. Using a
generalized ansatz for pulsating string configurations we find new solutions of
this class. Further we semiclassically quantize the theory and obtain the first
correction to the energy. The latter, due to AdS/CFT correspondence, is
supposed to give the anomalous dimensions of operators in the dual N=1
superconformal gauge field theory.Comment: 12 pages, improvements made, references adde
Provenancing of a marble artefact from the Etruscan town of Chiusi (Siena, Italy): a contribution to the knowledge of trade exchanges between Etruria and the Central Aegean in the Archaic period
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