We present a multi-wavelength study of RX J0848+4456, a cluster of galaxies discovered through X-ray emission in the ROSAT Deep Cluster Survey. Our observations consist of WFPC2 imaging, optical spectra, and X-ray data collected with the Chan-dra observatory. We find that RX J0848+4456 consists of an X-ray emitting cluster of galaxies at a redshift of z = 0.570 and a group at slightly lower red...

Late fetal and adult livers are reported to contain bipotential liver stem/ progenitor cells (LPCs), which share surface markers, including epithelial cell adhesion molecule (EpCAM), with cholangiocytes and differentiate into both hepatocytes and cholangiocytes. However, recent results do not necessarily support the idea that LPCs contribute significantly to cellular turnover and regeneration b...

We present a multi-wavelength study of RX J0848+4456, a cluster of galaxies discovered through X-ray emission in the ROSAT Deep Cluster Survey. Our observations consist of WFPC2 imaging, optical spectra, and X-ray data collected with the Chan-dra observatory. We find that RX J0848+4456 consists of an X-ray emitting cluster of galaxies at a redshift of z = 0.570 and a group at slightly lower red...

electrically stimulated using a multielectrode array (black circles). The nine color contours represent the spatial extent of electrical signals produced by each neuron (largest signal in red). Ganglion cells and their axons were labeled using a fluorescent retrograde tracer injected into the optic nerve. For more information, see the article by Sekirnjak et al. in this issue (pages 4446 – 4456...

The Border Gateway Protocol (BGP) is an inter-autonomous system routing protocol designed for TCP/IP internets. Typically, all BGP speakers within a single AS must be fully meshed so that any external routing information must be re-distributed to all other routers within that Autonomous System (AS). This represents a serious scaling problem that has been well documented with several alternative...

In the present paper, we give a fast algorithm for block diagonalization of k-tridiagonal matrices. The block diagonalization provides us with some useful results: e.g., another derivation of a very recent result on generalized k-Fibonacci numbers in [M.E.A. El-Mikkawy, T. Sogabe, A new family of k-Fibonacci numbers, Appl. Math. Comput. 215 (2010) 4456– 4461]; efficient (symbolic) algorithm for...

OBJECTIVE To ascertain the prevalence of rheumatoid arthritis (RA) in an Italian general population. METHODS The study was performed in the years 1991-92 in Chiavari, a small town located on the Ligurian coast, and involved 4456 subjects aged 16 years or more from four general practices. The subjects received a postal questionnaire developed to detect patients with current or past inflammator...

The structure of the Lc8 phase exhibited by hydrated dipalmitoylphosphatidylcholine ~DPPC! was recently determined by Raghunathan and Katsaras @Phys. Rev. Lett. 74, 4456 ~1995!# from x-ray diffraction studies on oriented multibilayers. Here, we reanalyze the powder diffraction data reported in the literature on a number of hydrated lipids possessing the phosphatidylcholine headgroup. As in DPPC...

Protein-protein interaction maps provide a valuable framework for a better understanding of the functional organization of the proteome. To detect interacting pairs of human proteins systematically, a protein matrix of 4456 baits and 5632 preys was screened by automated yeast two-hybrid (Y2H) interaction mating. We identified 3186 mostly novel interactions among 1705 proteins, resulting in a la...

A combination of high-resolution velocity-map-imaging photoelectron spectroscopy and isotopic substitution is used to show that precise electron affinities can be obtained from polyatomic photodetachment spectra, even for cases involving significant changes in equilibrium geometry between the molecular neutral and anion. The chosen example CS(2) (X (1)Σ(g)(+)) (linear) ← CS(2)(-) (X (2)A(1)) (b...