Results 61 to 70 of about 111,785 (320)

Transmembrane Activation of Catalysis and Protein Refolding in Synthetic Cells by Enzymes and Nanozymes

open access: yesAdvanced Functional Materials, EarlyView.
Synthetic cells are engineered herein to respond to an external chemical messenger by the activation of intracellular catalysis. The chemical messenger molecules are catalytically generated by an extracellular enzyme or a mineral surface, whereas the intracellular catalysis emerges via direct enzyme activation or via protein refolding.
Dante G. Andersen   +5 more
wiley   +1 more source

Fontes, formação, reatividade e determinação de quinonas na atmosfera

open access: yesQuímica Nova, 2016
Quinones are a group of semi-volatile organic substances, ubiquitous in nature, belonging to the class of oxygenated polycyclic aromatic hydrocarbons (Oxygenated PAH).
Eliane Teixeira Sousa   +2 more
doaj   +1 more source

On the Space of Slow Growing Weak Jacobi Forms [PDF]

open access: yesarXiv, 2020
Weak Jacobi forms of weight $0$ and index $m$ can be exponentially lifted to meromorphic Siegel paramodular forms. It was recently observed that the Fourier coefficients of such lifts are then either fast growing or slow growing. In this note we investigate the space of weak Jacobi forms that lead to slow growth.
arxiv  

Fast-Slow Streamflow Model Using Mass-Conserving LSTM [PDF]

open access: yesProceedings of the 38th International Conference on Machine Learning 2021, 2021
Streamflow forecasting is key to effectively managing water resources and preparing for the occurrence of natural calamities being exacerbated by climate change. Here we use the concept of fast and slow flow components to create a new mass-conserving Long Short-Term Memory (LSTM) neural network model.
arxiv  

The New Opiate Epidemic [PDF]

open access: yes, 2016
On the subject of narcotics, American public discourse is prone to alarmism, but it is not an exaggeration to say that the United States is currently experiencing an epidemic of opiate addiction.
Patrick Radden Keefe
core  

Antioxidant and Anti‐Senescence Polyvinyl Alcohol‐Gallic Acid Supramolecular Hydrogels for Stem Cell Culture

open access: yesAdvanced Healthcare Materials, EarlyView.
The PVA‐GA hydrogel is formed through hydrogen bonding between PVA hydroxyl groups and GA galloyl units, enabling sustainable GA release and its extended biological activity. The hydrogel scavenges ROS to reduce oxidative stress, preventing mitochondrial damage from excessive ROS, mitigating hADSC senescence, and preserving VEGF secretion, offering a ...
Yiduo Zhou   +11 more
wiley   +1 more source

Synthesis and Biological Evaluation of 2,5-Bis(alkylamino)-1,4-benzoquinones

open access: yesMolecules, 2010
A series of twelve 2,5-bis(alkylamino)-1,4-benzoquinones were prepared in yields ranging from 9–58% via the reaction between p-benzoquinone and various amines.
Cláudia Pessoa   +8 more
doaj   +1 more source

Glutathione (GSH) conjugates with dopamine (DA)-derived quinones to form reactive or non-reactive GSH-conjugates [PDF]

open access: yes, 2009
In this study we demonstrate for the first time that GSH could rapidly conjugate with dopamine (DA)-derived DA-o-quinones without enzymatic catalysis to form short-lived intermediate GSH-conjugates (2-S-GSH-DA-o-quinone and 5-S-GSH-DA-o-quinone).
Tit Meng Lim, Zhidong Zhou
core   +1 more source

Direct Surface Modification of the Epidermis Using Mussel‐Inspired Polydopamine with Multiple Anti‐Biofouling Functions

open access: yesAdvanced Healthcare Materials, EarlyView.
Surface modification using mussel‐derived polydopamine (PDA) is a versatile and robust biocompatible strategy that enables direct application to various epidermal surfaces, regardless of their morphological complexity or surface characteristics. The PDA‐coated epidermis exhibits multiple anti‐biofouling functionalities, including antibacterial and anti‐
Su Eon Lee   +14 more
wiley   +1 more source

Comparison of two models for bridge-assisted charge transfer [PDF]

open access: yesJ. Lumin. 83-84 (1999) 235, 1999
Based on the reduced density matrix method, we compare two different approaches to calculate the dynamics of the electron transfer in systems with donor, bridge, and acceptor. In the first approach a vibrational substructure is taken into account for each electronic state and the corresponding states are displaced along a common reaction coordinate. In
arxiv   +1 more source

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