The title compound, C(10)H(10)N(2) (2+)·C(8)Br(4)O(4) (2-)·2H(2)O, consists of a tetra-bromo-terephthalate dianion, a 4,4'-bipyridinium dication and two solvent water mol-ecules. Crystallographic inversion centers are situated at the center of the aromatic ring of the dianion as well as at the midpoint of the carbon-carbon bond connecting the pyridine rings in the dication. In the crystal, inte...

In the title mol-ecular salt, C(10)H(10)N(2) (2+)·2Br(-), the dihedral angle between the aromatic rings is 20.83 (14)° and the N-H groups have a transoid conformaton [N-C-C-N = 158.5 (3)°]. In the crystal, the cations are linked to the anions by two N-H⋯Br and five C-H⋯Br hydrogen bonds, generating corrugated sheets incorporating R(2) (1)(7), R(4) (2)(10), R(4) (2)(11) and two different R(4) (2...

The U4/U6.U5 tri-snRNP is a key component of spliceosomes. By using chemical reagents and RNases, we performed the first extensive experimental analysis of the structure and accessibility of U4 and U6 snRNAs in tri-snRNPs. These were purified from HeLa cell nuclear extract and Saccharomyces cerevisiae cellular extract. U5 accessibility was also investigated. For both species, data demonstrate t...

This study uses industrial pollution data from the Environmental Protection Agency's Toxics Release Inventory (TRI) and tract-level demographic data from the 2000 U.S. census to determine whether environmental racial inequality existed in the Detroit metropolitan area in the year 2000. This study differs from prior environmental inequality research in two important ways. First, it offers a posi...

An SN2 reaction (NaI) of 1,7-di(methanesulfoxyl)heptadien-4-yl methoxy-(2-naphthyl)acetate and a tributyltin hydride reduction of 1,7-diiodo-4-yl methoxy-(2-naphthyl)acetate (2NMA) is crucial for determination of the absolute configuration of secondary alcohols.

[Purpose] The purpose of the present study was to develop an education program for physical therapy assistants in order to provide high quality physical therapy for the province of Quang Tri in Vietnam. [Subjects and Methods] Subjects consisted of 9 professors in Quang Tri medical college and 1 physical therapist in Quang Tri General hospital. The survey research to lecturer for education of ph...

Three N-ar-yl-2,2,2-tri-bromo-acetamides, namely, 2,2,2-tri-bromo-N-(2-fluoro-phen-yl)-acetamide, C8H5Br3FNO, (I), 2,2,2-tri-bromo-N-[3-(tri-fluoro-methyl)-phen-yl]-acetamide, C9H5Br3F3NO, (II) and 2,2,2-tri-bromo-N-(4-fluoro-phen-yl)-acetamide, C8H5Br3FNO, (III) were synthesized and their crystal structures were analysed. In the crystal structure of (I), C-Br⋯πar-yl inter-actions connect the m...

The racemic hexacoordinate silicon(IV) complex tri(n-butyl)ammonium bis[citrato(3-)-O1,O3,O6]silicate (1) was synthesized by treatment of Si(OMe)4 with 2 molar equiv of citric acid and 2 molar equiv of N(n-Bu)3. The corresponding germanium analogue, tri(n-butyl)ammonium bis[citrato(3-)-O1,O3,O6]germanate (5; structurally characterized by single-crystal X-ray diffraction), was obtained analogous...

BACKGROUND Baker's asthma (BA) is the most prevalent occupational respiratory disease in developed countries. It is caused by inhalation of wheat dust in the working environment and affects 1%-10% of workers in the baking industry. Diagnosis of BA is based on bronchial challenge with wheat, a technique that carries a high risk for patients. The wheat lipid transfer protein Tri a 14 is a major a...