Results 41 to 50 of about 16,341 (199)

Treatment of Primary Pulmonary Aspergillosis: An Assessment of the Evidence. [PDF]

, 2016
Aspergillus spp. are a group of filamentous molds that were first described due to a perceived similarity to an aspergillum, or liturgical device used to sprinkle holy water, when viewed under a microscope.
Stewart, Ethan R, Thompson, George R
core   +3 more sources

Genealogy of Conjugated Acyclic Polyenes

Molecules, 2017
Based on the total π-electron energies Eπs of Hückel Molecular Orbital (HMO) method for all the possible isomers of conjugated acyclic polyenes (C2nH2n+2) up to n = 7, the structure–stability relation of the possible isomers was analyzed.
Haruo Hosoya
doaj   +1 more source

Profound cell wall remodeling in Candida parapsilosis during systemic infection confers simultaneous tolerance to echinocandins and host immunity

Microbiology Spectrum
Antifungal tolerance can promote the emergence of resistance yet often incurs fitness costs for fungal pathogens. How tolerant populations compensate for these deficits and how they may be therapeutically targeted remain poorly understood.
Farnaz Daneshnia, Liuyang Cai, Deepika Gunasekaran, Isha Gautam, Austin M. Perry, Pegah Mosharaf Ghahfarokhy, Arefeh Ebadati, Julieta Munoz, Dorian Padilla, Süleyha Hilmioglu-Polat, Shenglin Mei, Daniel J. Floyd, Miquel Àngel Schikora-Tamarit, Diego Fuentes, Maria Artigues-Lleixà, Louise A. Walker, Samuel M. Gonçalves, Mostafa Salehi, Agostinho Carvalho, Jigar V. Desai, David S. Perlin, Carol A. Munro, Alex Hopke, Tuo Wang, Toni Gabaldón, Wenjie Fang, Clarissa J. Nobile, Michael K. Mansour, Amir Arastehfar   +28 more
doaj   +1 more source

Structures and Bonding in Hexacarbonyl Diiron Polyenes: Cycloheptatriene and 1,3,5-Cyclooctatriene

Chemistry, 2022
Structural preferences of (1,3,5-cyclooctatriene) hexacarbonyl diiron [(C8H10)Fe2(CO)6] and cycloheptatriene hexacarbonyl diiron [(C7H8)Fe2(CO)6] were explored using density functional theory (DFT) computations.
Min Zhang, Guangchao Liang
doaj   +1 more source

Effect of dimerization on dynamics of spin-charge separation in Pariser-Parr-Pople model: A time-dependent density matrix renormalization group study

, 2011
We investigate the effect of static electron-phonon coupling, on real-time dynamics of spin and charge transport in $\pi$-conjugated polyene chains.
Dutta, Tirthankar, Ramasesha, S.
core   +1 more source

Semisynthetic Amides of Amphotericin B and Nystatin A₁: A Comparative Study of In Vitro Activity/Toxicity Ratio in Relation to Selectivity to Ergosterol Membranes

Antibiotics, 2023
Polyene antifungal amphotericin B (AmB) has been used for over 60 years, and remains a valuable clinical treatment for systemic mycoses, due to its broad antifungal activity and low rate of emerging resistance.
Anna Tevyashova, Svetlana Efimova, Alexander Alexandrov, Olga Omelchuk, Eslam Ghazy, Elena Bychkova, Georgy Zatonsky, Natalia Grammatikova, Lyubov Dezhenkova, Svetlana Solovieva, Olga Ostroumova, Andrey Shchekotikhin   +11 more
doaj   +1 more source

Electron correlation effects and two-photon absorption in diamond shaped graphene quantum dots

, 2018
In quasi-1D $\pi$-conjugated polymers such as \emph{trans}-polyacetylene and polyenes, electron correlation effects determine the "reversed" excited state ordering in which the lowest two-photon $2A_{g}$ state lies below the lowest one-photon $1B_{u ...
Basak, Tista, Basak, Tushima, Shukla, Alok   +2 more
core   +1 more source

The density matrix renormalization group for ab initio quantum chemistry [PDF]

, 2014
During the past 15 years, the density matrix renormalization group (DMRG) has become increasingly important for ab initio quantum chemistry. Its underlying wavefunction ansatz, the matrix product state (MPS), is a low-rank decomposition of the full ...
Van Neck, Dimitri, Wouters, Sebastian
core   +2 more sources

Polyenes and vision

Chemistry & Biology, 1996
Polyenes are important for vision in all sighted species. The visual pigments (the rhodopsins) all use 11-cis-retinal as the chromophore; some possible reasons for the importance of this isomer are now emerging. New results on the involvement of xanthophils in the maintenance of the retina are also discussed.
openaire   +2 more sources

Additivity of Heats of Combustion, LCAO Resonance Energies, and Bond Orders of Conformal Sets of Conjugated Compounds [PDF]

, 1965
The notion of "conformal sets" of aromatic and other conjugated compounds is introduced. To a good approximation, it is found that the sum of the heats of combustion of the compounds in one set equals the sum for the compounds in the other set.
Marcus, R. A.
core   +1 more source