Results 21 to 30 of about 178,037 (297)

Discovery of two new phases of zirconium tetrakis(8-hydroxyquinolinolate): synthesis, crystal structure and their electron transporting characteristics in organic light emitting diodes (OLEDs) [PDF]

open access: yes, 2011
Two new phases of zirconium tetrakis(8-hydroxyquinolinolate) (Zrq4) have been synthesised and characterised by single crystal X-ray diffraction. Their electrical, electronic, optical and thermal properties have been studied.
Alexander J. Blake   +42 more
core   +1 more source

Coevolutionary dynamics of a variant of the cyclic Lotka-Volterra model with three-agent interactions

open access: yes, 2020
We study a variant of the cyclic Lotka-Volterra model with three-agent interactions. Inspired by a multiplayer variation of the Rock-Paper-Scissors game, the model describes an ideal ecosystem in which cyclic competition among three species develops ...
Ferriani, Stefano   +2 more
core   +1 more source

Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer [PDF]

open access: yes, 1985
Resact, a peptide of known sequence isolated from the jelly layer of Arbacia punctulata eggs, is a potent chemoattractant for A. punctulata spermatozoa. The chemotactic response is concentration dependent, is abolished by pretreatment of the spermatozoa ...
Brokaw, Charles J.   +3 more
core   +3 more sources

Ligand binding and conformational dynamics of the E. coli nicotinamide nucleotide transhydrogenase revealed by hydrogen/deuterium exchange mass spectrometry

open access: yesComputational and Structural Biotechnology Journal, 2022
Nicotinamide nucleotide transhydrogenases are integral membrane proteins that utilizes the proton motive force to reduce NADP+ to NADPH while converting NADH to NAD+.
Jonathan Zöller   +7 more
doaj   +1 more source

Vasodilation by the Calcium-mobilizing Messenger Cyclic ADP-ribose [PDF]

open access: yesJournal of Biological Chemistry, 2003
In artery smooth muscle, adenylyl cyclase-coupled receptors such as beta-adrenoceptors evoke Ca(2+) signals, which open Ca(2+)-activated potassium (BK(Ca)) channels in the plasma membrane. Thus, blood pressure may be lowered, in part, through vasodilation due to membrane hyperpolarization.
Boittin, F   +4 more
openaire   +2 more sources

Real-Time Mitigation of the Mobility Effect for IEEE 802.15.4g SUN MR-OFDM

open access: yesApplied Sciences, 2019
In order to develop wireless sensor networks, which are defined by the IEEE 802.15.4 specification, researchers are considering low-power wide-area networks (LPWAN) due to their advantages of being long range, low power, low cost, and highly mobile.
Huy Nguyen   +3 more
doaj   +1 more source

Three-fold way to extinction in populations of cyclically competing species [PDF]

open access: yes, 2010
Species extinction occurs regularly and unavoidably in ecological systems. The time scales for extinction can broadly vary and inform on the ecosystem's stability.
Cremer J   +6 more
core   +2 more sources

Cyclic ADP Ribose as a Calcium-Mobilizing Messenger

open access: yesScience's STKE, 2000
This Perspective by Galione and Churchill is one in a series on intracellular calcium release mechanisms. The authors review the evidence for cyclic adenosine diphosphate ribose (cADPR) being a second messenger involved in regulating intracellular calcium. In addition, the physiological stimuli and responses mediated by cADPR are discussed.
Galione, A, Churchill, G
openaire   +3 more sources

Cyclic Ion Mobility for Hydrogen/Deuterium Exchange-Mass Spectrometry Applications

open access: yesAnalytical Chemistry, 2023
Hydrogen/deuterium exchange-mass spectrometry (HDX-MS) has emerged as a powerful tool to probe protein dynamics. As a bottom-up technique, HDX-MS provides information at peptide-level resolution, allowing structural localisation of dynamic changes. Consequently, HDX-MS data quality is largely determined by the number of peptides that are identified and
Damon Griffiths   +9 more
openaire   +5 more sources

Plasticity, Flow Liquefaction, and Cyclic Mobility in Liquefiable Soils with Low to Moderate Plasticity

open access: yesCivilEng
Over the past several decades, extensive research has advanced the understanding of liquefaction in clean sands and sand–silt mixtures under seismic loading.
Carmine P. Polito, James R. Martin
doaj   +1 more source

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