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

