Results 21 to 30 of about 61,090 (217)

Ion channels and ion selectivity [PDF]

open access: yesEssays in Biochemistry, 2017
Specific macromolecular transport systems, ion channels and pumps, provide the pathways to facilitate and control the passage of ions across the lipid membrane. Ion channels provide energetically favourable passage for ions to diffuse rapidly and passively according to their electrochemical potential.
openaire   +2 more sources

Alzheimer’s Disease, a Lipid Story: Involvement of Peroxisome Proliferator-Activated Receptor α

open access: yesCells, 2020
Alzheimer’s disease (AD) is the leading cause of dementia in the elderly. Mutations in genes encoding proteins involved in amyloid-β peptide (Aβ) production are responsible for inherited AD cases.
Francisco Sáez-Orellana   +2 more
doaj   +1 more source

Recognizing Manual Activities Using Wearable Inertial Measurement Units: Clinical Application for Outcome Measurement

open access: yesSensors, 2021
The ability to monitor activities of daily living in the natural environments of patients could become a valuable tool for various clinical applications.
Ghady El Khoury   +5 more
doaj   +1 more source

Multi-color diamond-saw-diced channel Pr,Gd:LiYF4 waveguide laser [PDF]

open access: yesEPJ Web of Conferences
Ridge low loss (0.16±0.02 dB/cm) waveguides were fabricated in Pr,Gd:LiYF4 epitaxial layers by precision diamond-saw dicing. The red waveguide laser generated 504 mW at 639.7 nm with a slope efficiency of 57.8%, a linear polarization and a laser ...
Demaimay Jonathan   +8 more
doaj   +1 more source

Dynamic ion-ion and water-ion interactions in ion channels

open access: yesBiophysical Journal, 1992
The dynamic interactions among ions and water molecules in ion channels are treated based on an assumption that ions at binding sites can be knocked off by both transient entering ions and local water molecules. The theory, when applied to a single-site model K+ channel, provides solutions for super- and subsaturations, flux-ratio exponent (n') greater
openaire   +2 more sources

Isotope dependence of the Zeeman effect in lithium-like calcium

open access: yesNature Communications, 2016
In addition to hyperfine splitting effects, isotope shifts of atomic electronic energy levels allow the investigation nuclear properties. Here, the authors study the isotope dependence of the Zeeman effect in litihium-like calcium isotopes in a Penning ...
Florian Köhler   +16 more
doaj   +1 more source

Effect of the doping level on the 2.8-µm laser performance of Er3+:CaF2 crystals [PDF]

open access: yesEPJ Web of Conferences
The effect of doping level (0.1-10 at.%) on mid-infrared laser performance of Er:CaF2 crystals was investigated. The Er:CaF2 laser delivered 1.17 W at 2798 nm with 35.8% slope efficiency and was tuned across 2690-2830 nm.
Jambunathan Venkatesan   +7 more
doaj   +1 more source

Characterization of Vagus Nerve Stimulation (VNS) Dose-Dependent Effects on EEG Power Spectrum and Synchronization

open access: yesBiomedicines
This study investigates the dose-dependent EEG effects of Vagus Nerve Stimulation (VNS) in patients with drug-resistant epilepsy. This research examines how varying VNS intensities impacts EEG power spectrum and synchronization in a cohort of 28 patients.
Enrique Germany Morrison   +6 more
doaj   +1 more source

Aligned representation of visual and tactile motion directions in hMT+/V5 and fronto-parietal regions

open access: yesNature Communications
Moving events on the skin can be perceived through vision and touch. How does the brain create a unified multisensory representation of motion directions initially acquired in different coordinate systems?
Iqra Shahzad   +5 more
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

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