We discuss the observations leading to the Faint Blue Galaxy problem and the uncertainties upon which faint galaxy models are based. Using deep Hubble Space Telescope (HST) imaging with the Wide Field Planetary Camera (WFPC2), we show how morphological information has been used to shed new light on the problem. Initial results indicate that the giant galaxies (ellipticals and early-type spirals...

A novel route for controlled synthesis of Prussian blue nanospheres (PB NSs) with different sizes by using deep eutectic solvents (DES) as both solvent and template provider was demonstrated. The size-controlled PB NSs were obtained directly by the coordination of Fe(CN)(6)(4-) ion with Fe(3+) ion in the DES. The probable mechanism of formation of PB NSs was discussed based on the characterizat...

From a magnetohydrodynamic simulation, we reproduce a three-ring structure in the circumstellar space of the supernova (SN) 1987A observed by the Hubble Space Telescope. When a star develops from a red supergiant (RSG) to a blue supergiant (BSG) just before the SN explosion, a wind-wind interaction occurs between the slow stellar wind from the RSG and the subsequent fast stellar wind from the B...

The title compound, C(19)H(13)BrO(3)S, was prepared by the oxidation of 7-bromo-2-methyl-1-(phenyl-sulfan-yl)naph-tho[2,1-b]furan with 3-chloro-peroxy-benzoic acid. The phenyl ring makes a dihedral angle of 80.4 (2)° with the plane of the naphthofuran fragment. The crystal structure is stabilized by aromatic π-π stacking inter-actions between the brominated benzene ring and the central benzene ...

In the title compound, [Cu(C8H7O2S)2(C12H8N2)(H2O)]·H2O, the central Cu(II) atom is five-coordinated in a slightly distorted square-pyramidal environment by two N atoms from a 1,10-phenanthroline ligand, one O atom from the carboxylate group of one 4-(methyl-sulfan-yl)benzoate anion and one water O atom in the equatorial plane while the apical position is occupied by the O atom of a carboxylate...

In this work, magnetic functionality was introduced to cross-linked acrylamide-based particles via the in situ coprecipitation of iron oxide nanoparticles within the hydrogel particle interior. Cibacron Blue F3G-A was then incorporated onto the magnetic hydrogel scaffold to facilitate the harvest of targeted protein species. The dye-loaded magnetic particles were physically characterized, and t...

The wings of four papilionid butterfly species of the nireus group, Papilio bromius, P. epiphorbas, P. nireus and P. oribazus, are marked by blue-green coloured bands surrounded by black margins. The cover scales in the coloured bands contain a violet-absorbing, blue-fluorescing pigment. The fluorescence and absorbance spectra of the nireus group wings are very similar to those of the wings of ...

This article discusses how pharmaceutical innovation achieves remarkable improvements in human health but a significant portion of the U.S. population cannot afford prescription drugs. The author examines ways that patent protection, generics, supply chain complexity, and the cost of innovation and promotion affect access and affordability. The author then looks at the influences of marketing s...

We use the term \Blue Noise Mask" to mean a halftone threshold array that has been constructed to produce pleasing, unstructured (but not white noise) binary patterns. An eecient way to produce a Blue Noise Mask is to construct a set of binary patterns that are constrained by neighboring levels. These binary patterns are appropriate for diierent grey levels, and can be summed to form a single t...

An automated method for routine determination of nanomolar ammonium in seawater has been developed using segmented flow analysis coupled with a 2-m-long liquid waveguide capillary cell. Conventional photometric detector and autosampler were modified for this method. The optimal concentrations of the reagents and parameters for the development of indophenol blue are discussed. The method has low...