Results 51 to 60 of about 6,218,927 (299)

Intramolecular Versus Intermolecular Diels–Alder Reactions: Insights from Molecular Electron Density Theory

Molecules
The intramolecular Diels–Alder (IMDA) reactions of four substituted deca-1,3,9-trienes and one N-methyleneocta-5,7-dien-1-aminium with different electrophilic/nucleophilic activations have been studied within the Molecular Electron Density Theory (MEDT ...
Luis R. Domingo, Patricia Pérez
doaj   +1 more source

Missing OH reactivity in the global marine boundary layer [PDF]

Atmospheric Chemistry and Physics, 2020
The hydroxyl radical (OH) reacts with thousands of chemical species in the atmosphere, initiating their removal and the chemical reaction sequences that produce ozone, secondary aerosols, and gas-phase acids.
A. B. Thames, W. H. Brune, D. O. Miller, H. M. Allen, E. C. Apel, D. R. Blake, T. P. Bui, R. Commane, J. D. Crounse, B. C. Daube, G. S. Diskin, J. P. DiGangi, J. W. Elkins, S. R. Hall, T. F. Hanisco, R. A. Hannun, R. A. Hannun, E. Hintsa, E. Hintsa, R. S. Hornbrook, M. J. Kim, K. McKain, K. McKain, F. L. Moore, F. L. Moore, J. M. Nicely, J. M. Nicely, J. Peischl, J. Peischl, T. B. Ryerson, J. M. St. Clair, J. M. St. Clair, C. Sweeney, A. Teng, C. R. Thompson, C. R. Thompson, K. Ullmann, P. O. Wennberg, P. O. Wennberg, G. M. Wolfe, G. M. Wolfe   +40 more
doaj   +1 more source

Chemical reactivity of hydrogen bronzes

Journal de Chimie Physique, 1986
The formation and some of the chemical properties of hydrogen bronzes prepared by spillover of hydrogen onto Pt particles deposited on the surface of MoO3 , V2 O5 and VMoO5.5 are briefly reviewed. The chemical activity refers to the way the hydrogen atoms within those reservoirs are recovered in the presence of hydrogen accepting molecules such as ...
Tinet, D., Ancion, C., Poncelet, Georges, Fripiat, JJ.   +3 more
openaire   +2 more sources

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Volatile Organic Compounds in a Petrochemical Region in Arid of NW China: Chemical Reactivity and Source Apportionment

Atmosphere, 2019
We measured volatile organic compounds (VOCs) during the heating, non-heating, and sandstorm periods in the air of the Dushanzi district in NW China and investigated their concentrations, chemical reactivity, and sources.
Xiaoxiao Zhang, Xiang Ding, Xinming Wang, Dilinuer Talifu, Guo Wang, Yanli Zhang, Abulikemu Abulizi   +6 more
doaj   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Chemical reactivity from a conceptual density functional theory perspective

, 2021
Chemical reactivity is discussed in terms of various conceptual density functional theory based global and local reactivity descriptors like electronegativity, chemical hardness and softness (and their local variants), chemical potential, polarizability,
Chattaraj, Pratim Kumar, Pal, Ranita
core   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Chemical Reactivity and Light Absorption. Part II.

, 1934
Chemical Reactivity and Light Absorption.
A. K. BHATTACHARYA, A. K. BHATTACHARYYA., N. R·. DHAR, N. R. DHAR   +3 more
core   +1 more source

The microbiome in human skin aging

FEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana, Cornelia Wiegand, Omid Omrani, Mario Fabri   +3 more
wiley   +1 more source