Spectrum of a Ring

A rhodamine B derivative containing 1,2,4-triazole as subunit was characterized as an “off–on” type Cu2+ - selective fluorescent probe. It exhibited high selectivity and sensitivity for Cu2+ in ethanol–water solution (9:1, v:v, pH 7.0, 20 mM HEPES) and underwent ring opening. A prominent fluorescence enhancement at 570 nm was observed in the presence of Cu2+ with the change in the absorption spectrum, and a 1:1 metal–ligand complex was formed.

7p langthannam 29-12-2021 10 0   Download

Marine compound dendrodoine was first obtained from tunicate species (Dendrodo grossularia). It has a five-membered ring, namely, it is a heterocycle thiadiazole, which is found rarely in natural sources. Following its biological activities, novel analogs have been investigated recently. Synthesis of the analogs for this study is realized with uncommon thiazole closure, including methylene-carbonyl condensation. Structures are elucidated by NMR (1H, 13C) and HRMS spectrums.

9p tudichquannguyet 29-11-2021 9 1   Download

Extended spectrum beta lactamase producers are posing a major obstacle in the therapeutic outcome of patients. They cause enzymatic hydrolysis of the beta lactum ring, resulting in resistance to penicillins and cephalosporins. The rise in ESBL producers results in prolonged treatment which leads to increased hospital stay and financial burden on the patient. It is necessary for all the hospitals to monitor ESBL producers to formulate preventive and therapeutic measures accordingly. The study was conducted in a tertiary care hospital during the period from December 2015 to November 2016.

7p angicungduoc8 07-11-2020 15 1   Download

In this paper, we report a numerical calculation of the influence of structural parameters on the supercontinuum generation of photonic crystal fibers. A photonic crystal fiber based on the fused silica glass, eight rings of air holes ordered in a hexagonal lattice, is proposed. Guiding properties in terms of dispersion and confinement loss of the fundamental mode are also studied numerically. As a result, the broadband width of the supercontinuum spectrum will increase when the lattice pitch decreases or the diameter of air hole in the cladding increases.

8p kethamoi6 01-07-2020 27 3   Download

Spectrum of a Ring, Fiber products, Schemes over fields, Local Properties of Schemes, Representable Functors, Separated morphisms, Finiteness Conditions, Affine and proper morphisms,... As the main contents of the Tài liệu Algebraic geometry 1. Invite you to consult.

621p daicatho1989 13-03-2016 59 5   Download

Invite you to consult the document content, "Algebraic Geometry I" below. Contents of the document referred to the content you: Prevarieties, Spectrum of a Ring, Fiber products, Schemes over fields, Local Properties of Schemes, Representable Functors, Separated morphisms,...

621p daicatho1989 25-01-2016 50 4   Download

Protein ubiquitination mediated by ubiquitin ligases plays a very important role in a wide spectrum of biological processes including development and disease pathogenesis. RING finger protein 13 (RNF13) is a recently identi-fied ubiquitin ligase which contains an N-terminal protease-associated domain and a C-terminal RING finger domain separated by a transmem-brane region.

7p mobifone23 08-01-2013 48 3   Download

Topological Hochschild homology and localization 2. The homotopy groups of T (A|K) 3. The de Rham-Witt complex and TR· (A|K; p) ∗ 4. Tate cohomology and the Tate spectrum 5. The Tate spectral sequence for T (A|K) 6. The pro-system TR· (A|K; p, Z/pv ) ∗ Appendix A. Truncated polynomial algebras References Introduction In this paper we establish a connection between the Quillen K-theory of certain local fields and the de Rham-Witt complex of their rings of integers with logarithmic poles at the maximal ideal.

114p tuanloccuoi 04-01-2013 56 6   Download