150,822 research outputs found
Data for: Empowering Knowledge: Political Leaders, Education, and Economic Liberalization
No full textData set: "Empowering Knowledge: Political Leaders, Education, and Economic Liberalization" by Jingheng Li, Tianyang Xi, and Yang Yao (2018
Observation of Two Narrow States Decaying Into \Xi
No full textWe report the first observation of two narrow charmed strange baryons decaying to \Xi + c fl and \Xi 0 c fl, respectively, using data from the CLEO II detector at CESR. We interpret the observed signals as the \Xi +0 c (cfsug) and \Xi 00 c (cfsdg), the symmetric partners of the well-established antisymmetric \Xi + c (c[su]) and \Xi 0 c (c[sd]). The mass differences M (\Xi +0 c ) \Gamma M (\Xi + c ) and M (\Xi 00 c ) \Gamma M (\Xi 0 c ) are measured to be 107:8 \Sigma 1:7 \Sigma 2:5 and 107:0 \Sigma 1:4 \Sigma 2:5 MeV/c 2 , respectively. C. P. Jessop, 1 K. Lingel, 1 H. Marsiske, 1 M. L. Perl, 1 V. Savinov, 1 D. Ugolini, 1 X. Zhou, 1 T. E. Coan, 2 V. Fadeyev, 2 I. Korolkov, 2 Y. Maravin, 2 I. Narsky, 2 R. Stroynowski, 2 J. Ye, 2 T. Wlodek, 2 M. Artuso, 3 E. Dambasuren, 3 S. Kopp, 3 G. C. Moneti, 3 R. Mountain, 3 S. Schuh, 3 T. Skwarnicki, 3 S. Stone, 3 A. Titov, 3 G. Viehhauser, 3 J.C. Wang, 3 S. E. Csorna, 4 K..
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Compact stars in f ( T ) = T + ξ T β gravity
No full textAbstract The Teleparallel Theory is equivalent to General Relativity, but whereas in the latter gravity has to do with curvature, in the former gravity is described by torsion. As is well known, there is in the literature a host of alternative theories of gravity, among them the so called extended theories, in which additional terms are added to the action, such as for example in the f(R) and f(T) gravities, where R is the Ricci scalar and T is the scalar torsion, respectively. One of the ways to probe alternative gravity is via compact objects. In fact, there is in the literature a series of papers on compact objects in f(R) and f(T) gravity. In particular, there are several papers that consider f ( T ) = T + ξ T 2 , where ξ is a real constant. In this paper, we generalise such extension considering compact stars in f ( T ) = T + ξ T β gravity, where ξ and β are real constants and looking out for the implications in their maximum masses and compactness in comparison to the General Relativity. Also, we are led to constrain the β parameter to positive integers which is a restriction not imposed by cosmology
Early growth response gene-2 (Egr-2) regulates the development of B and T cells
No full textThe study was supported by Arthritis Research UK.
Copyright @ 2011 Li et al.BACKGROUND: Understanding of how transcription factors are involved in lymphocyte development still remains a challenge. It has been shown that Egr-2 deficiency results in impaired NKT cell development and defective positive selection of T cells. Here we investigated the development of T, B and NKT cells in Egr-2 transgenic mice and the roles in the regulation of distinct stages of B and T cell development. METHODS AND FINDINGS: The expression of Egr1, 2 and 3 were analysed at different stages of T and B cell development by RT-PCT and results showed that the expression was strictly regulated at different stages. Forced expression of Egr-2 in CD2+ lymphocytes resulted in a severe reduction of CD4+CD8+ (DP) cells in thymus and pro-B cells in bone marrow, which was associated with reduced expression of Notch1 in ISP thymocytes and Pax5 in pro-B cells, suggesting that retraction of Egr-2 at the ISP and pro-B cell stages is important for the activation of lineage differentiation programs. In contrast to reduction of DP and pro-B cells, Egr-2 enhanced the maturation of DP cells into single positive (SP) T and NKT cells in thymus, and immature B cells into mature B cells in bone marrow. CONCLUSIONS: Our results demonstrate that Egr-2 expressed in restricted stages of lymphocyte development plays a dynamic, but similar role for the development of T, NKT and B cells.This article is provided by the Brunel Open Access publishing fund
The Observatory. T. XI, janvier 1888
No full textThe Observatory. T. XI, janvier 1888. In: Bulletin astronomique, tome 5, 1888. pp. 127-133
The Observatory. T. XI, avril 1888
No full textCallandreau Octave. The Observatory. T. XI, avril 1888. In: Bulletin astronomique, tome 5, 1888. pp. 269-274
The Observatory T. XI, février 1888
No full textCallandreau Octave. The Observatory T. XI, février 1888. In: Bulletin astronomique, tome 5, 1888. pp. 167-178
IV. — Romanische Studien, t. III (n° XI)
No full textP. G. IV. — Romanische Studien, t. III (n° XI). In: Romania, tome 7 n°28, 1878. pp. 632-633
The Observatory. T. XI, juin 1888
No full textCallandreau Octave. The Observatory. T. XI, juin 1888. In: Bulletin astronomique, tome 5, 1888. pp. 366-372
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