Results 71 to 80 of about 76,527 (199)

The mechanosensitive ion channel TRAAK is localized to the mammalian node of Ranvier. [PDF]

open access: yes, 2019
TRAAK is a membrane tension-activated K+ channel that has been associated through behavioral studies to mechanical nociception. We used specific monoclonal antibodies in mice to show that TRAAK is localized exclusively to nodes of Ranvier, the action ...
Brohawn, Stephen   +5 more
core  

Common pulse retrieval algorithm: a fast and universal method to retrieve ultrashort pulses

open access: yes, 2018
We present a common pulse retrieval algorithm (COPRA) that can be used for a broad category of ultrashort laser pulse measurement schemes including frequency-resolved optical gating (FROG), interferometric FROG, dispersion scan, time domain ptychography,
Eilenberger, Falk   +3 more
core   +1 more source

Oxidative phosphorylation efficiency, proton conductance and reactive oxygen species production of liver mitochondria correlates with body mass in frogs [PDF]

open access: yes, 2015
ody size is a central biological parameter affecting most biological processes (especially energetics) and mitochondria is a key organelle controlling metabolism and is also the cell's main source of chemical energy.
Dumet, A.   +5 more
core   +3 more sources

Photobleaching through glass micropipettes: sodium channels without lateral mobility in the sarcolemma of frog skeletal muscle. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1982
Sodium currents were recorded from frog skeletal muscle by using fire-polished micropipettes to electrically isolate and voltage clamp a small patch of sarcolemma. Sodium current amplitude served as an assay for the number of functional sodium channels in the patch. With the pipette as a light guide, these channels were irradiated with ultraviolet (UV)
W, Stühmer, W, Almers
openaire   +2 more sources

Dealing With Inbuilt Age: A Bayesian Approach to Radiocarbon Dating of Rice, Bamboo and Charcoal From Non Ban Jak, Thailand

open access: yesArchaeometry, EarlyView.
ABSTRACT New radiocarbon determinations from rice grains and bamboo have been obtained from Non Ban Jak, Northeast Thailand. These, along with charcoal, date a late Iron Age building sequence. The results come from short‐lived species and charcoal with potential inbuilt age. We built a series of Bayesian models to obtain a reliable chronology.
C. F. W. Higham, T. F. G. Higham
wiley   +1 more source

Rediscovery of Hyalinobatrachium chirripoi (Anura: Centrolenidae) in southeastern Costa Rica

open access: yesRevista de Biología Tropical, 2004
The Suretka glass frog, Hyalinobatrachium chirripoi, has been recently rediscovered in the south-eastern region of Costa Rica. This species was last reported in Costa Rica in the 1950’s. H. chirripoi is distinguished from H. colymbiphyllum, which appears
Brian Kubicki
doaj  

Three-Dimensional Light Bullets in Arrays of Waveguides

open access: yes, 2010
We report the first experimental observation of 3D-LBs, excited by femtosecond pulses in a system featuring quasi-instantaneous cubic nonlinearity and a periodic, transversally-modulated refractive index.
Bartelt, Hartmut   +12 more
core   +1 more source

Glass frogs (Centrolenidae) of Yanayacu Biological Station, Ecuador, with the description of a new species and comments on centrolenid systematics [PDF]

open access: yesZoological Journal of the Linnean Society, 2006
We describe Centrolene bacatum, C. buckleyi, Cochranella posadae, and a new species of Cochranella from Yanayacu Biological Station on the Amazonian slopes of the Ecuadorian Andes. The new species differs from other species in Centrolenidae by a combination of characters, including reduced webbing between Fingers III and IV, and kidneys covered with ...
Guayasamin, Juan M.   +3 more
openaire   +1 more source

Irradiation of Sperm Tails by Laser Microbeam [PDF]

open access: yes, 1969
1. Sea-urchin and starfish sperm tails were irradiated at pre-selected points along the flagellum and at pre-selected phases of the beat cycle by means of a pulsed ruby laser microbeam. Multiple-exposure dark-field photomicrographs were taken immediately
Goldstein, Stuart F.
core  

Amphibians and Reptiles of United States Department of Defense Installations [PDF]

open access: yes, 2018
The U.S. Department of Defense (DoD) occupies approximately 10.1 million ha of land within the U.S. spanning most ecosystems contained therein. To date, no comprehensive agency-wide inventory of amphibian and reptile species has been compiled.
Lovich, Robert E.   +2 more
core   +1 more source

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