Results 41 to 50 of about 151,544 (302)

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling   +16 more
wiley   +1 more source

Frogs and Toads of Northern Belize

open access: yesEDIS, 2018
Belize is home to several threatened frog species. One of them, the Maya mountains frog, lives nowhere else in the world. This 4-page fact sheet written by Jenna M. Cole, Sarah K. Cooke, Venetia S. Briggs-Gonzalez, Justin R.
Jenna M. Cole   +4 more
doaj   +3 more sources

When the going gets rough – studying the effect of surface roughness on the adhesive abilities of tree frogs [PDF]

open access: yes, 2016
Tree frogs need to adhere to surfaces of various roughnesses in their natural habitats; these include bark, leaves and rocks. Rough surfaces can alter the effectiveness of their toe pads, due to factors such as a change of real contact area and abrasion
Barnes, W. Jon P.   +4 more
core   +2 more sources

The Musical Frogs in Frogs

open access: yes, 2020
New suggestions about the implications of the agon in Aristophanes' Frogs, including the assimilation of the aulete to a frog because the visual aspect of circular breathing involves puffed-out cheeks.
openaire   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

open access: yesAdvanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani   +3 more
wiley   +1 more source

A new minute species of Pristimantis (Amphibia: Anura: Craugastoridae) with a large head from the Yanachaga-Chemillén National Park in central Peru, with comments on the phylogenetic diversity of Pristimantis occurring in the Cordillera Yanachaga

open access: yesEuropean Journal of Taxonomy, 2017
We describe a new minute species of the genus Pristimantis, P. boucephalus sp. nov., from the Yanachaga-Chemillén National Park, Región Pasco, Peru. The description is based on a freshly collected male specimen found at 2950 m a.s.l.
Edgar Lehr   +3 more
doaj   +1 more source

Enhanced Infection Resistance and Regenerative Healing of Titanium Implants via Peptide‐Loaded Biodegradable Coatings

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents a new biodegradable coating for titanium implants using a natural antimicrobial peptide, caerin 1.9. Applied via solvent casting, the coating offers sustained antibacterial protection and promotes healing. Tested on 3D‐printed porous titanium scaffolds, it effectively prevented infection—including against resistant bacteria—while ...
Hejie Li   +7 more
wiley   +1 more source

Convergent Total Synthesis of 16β‐Hydroxylpseudobufarenogin

open access: yesAngewandte Chemie, EarlyView.
We present a novel convergent strategy that integrates Pd/Ag‐promoted Suzuki–Miyaura coupling with Ir‐catalyzed radical‐relay cyclization, enabling the first total synthesis of 16β‐hydroxylpseudobufarenogin. This approach is broadly applicable to the total synthesis of various oxygenated bufadienolides by simply modifying the fragment structures ...
Wataru Shigematsu   +3 more
wiley   +2 more sources

New records of amphibians for Ha Nam Province, Vietnam [PDF]

open access: yesBiodiversity Data Journal
The Kim Bang Proposed Species and Habitat Conservation Area (SHCA) is located in Ha Nam Province, northern Vietnam. The terrain of the proposed SHCA is characterised by limestone karst formations and narrow valleys.
Anh Pham   +5 more
doaj   +3 more sources

Specialist or generalist? Feeding ecology of the Malagasy poison frog Mantella aurantiaca [PDF]

open access: yes, 2007
We studied the diet of a population of free-ranging Mantella aurantiaca, an alkaloid-containing poison frog from Madagascar. As in other poison frogs, this species is thought to sequester alkaloids from arthropod prey.
Fisher, Brian L.   +5 more
core  

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