Results 51 to 60 of about 16,341 (199)

New Glycosylated Polyene Macrolides: Refining the Ore from Genome Mining

open access: yesAntibiotics, 2022
Glycosylated polyene macrolides include effective antifungal agents, such as pimaricin, nystatin, candicidin, and amphotericin B. For the treatment of systemic mycoses, amphotericin B has been described as a gold-standard antibiotic because of its potent
Patrick Caffrey, Mark Hogan, Yuhao Song
doaj   +1 more source

Focal Spot, Fall 1981 [PDF]

open access: yes, 1981
https://digitalcommons.wustl.edu/focal_spot_archives/1029/thumbnail ...

core   +1 more source

Empirical LCAO parameters for $\pi$ molecular orbitals in planar organic molecules

open access: yes, 2008
We present a parametrization within a simplified LCAO model (a type of Hueckel model) for the description of $\pi$ molecular orbitals in organic molecules containing $\pi$-bonds between carbon, nitrogen, or oxygen atoms with $sp^2$ hybridization, which ...
Hawke, Laurence   +2 more
core   +3 more sources

The Thouless theorem for matrix product states and subsequent post-density matrix renormalization group methods [PDF]

open access: yes, 2013
The similarities between Hartree-Fock (HF) theory and the density-matrix renormalization group (DMRG) are explored. Both methods can be formulated as the variational optimization of a wave-function ansatz.
Chan, Garnet Kin-Lic   +3 more
core   +4 more sources

Electron Correlation Effects on the Longitudinal Polarizabilities and Second Hyperpolarizabilities of Polyenes: A Finite Field Study

open access: yesInternational Journal of Photoenergy, 2014
We carry out ab initio calculations, based on finite-field scheme, of the longitudinal polarizabilities (αL) and second hyperpolarizabilities (γL) of conjugated polyenes, and study the effects of electron correlation, with second-order Moller-Plesset ...
Qingxu Li, Xianju Zhou, Shiwei Yin
doaj   +1 more source

Theoretical Insight into Psittacofulvins and Their Derivatives

open access: yesMolecules
Psittacofulvins are polyenal dyes responsible for coloring parrot feathers and protecting them against photo-oxidation, harmful radicals, and bacterial degradation.
Marcin Molski
doaj   +1 more source

Microscopic theory of vibronic dynamics in linear polyenes

open access: yes, 2002
We propose a novel approach to calculate dynamical processes at ultrafast time scale in molecules in which vibrational and electronic motions are strongly mixed.
Aligia, A. A.   +2 more
core   +1 more source

Analysis of the prevalence and sensitivity to antimycotic drugs of C. albicans strains in Bukovina during 2019–2023

open access: yesZaporožskij Medicinskij Žurnal
The aim of this work was to study the prevalence of C. albicans strains among patients with inflammatory processes of various localization during 2019–2023 years and to analyze dynamics in the sensitivity of these isolates to antifungal drugs ...
O. O. Blinder   +4 more
doaj   +1 more source

Liposomal-polyene preliposomal powder and method for its preparation [PDF]

open access: yes, 1993
A method is disclosed for preparing a stable preliposomal powder which, when reconstituted with water or saline solution, forms a suspension of liposomes containing a polyene drug, such as nystatin. The method involves the steps of combining at least one
Lenk, Robert P.   +2 more
core   +1 more source

Plastics in Heritage Collections: Poly(vinyl chloride) Degradation and Characterization

open access: yesActa Chimica Slovenica, 2020
Museums and galleries house increasingly large collections of objects and contemporary art made of plastic materials, many of which undergo rapid material change.
Tjaša Rijavec   +2 more
doaj   +1 more source

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