Results 61 to 70 of about 3,288 (175)

Morphological and molecular evidence reveals a new species of Characidium from the Ucayali‐Urubamba Piedmont, Peru, and novel molecular clades are proposed within the genus

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of Characidium is described from the Urubamba River basin, within the Ucayali‐Urubamba Piedmont ecoregion, Peru. The new species can be readily distinguished from all congeners, except Characidium cacah, Characidium chicoi, Characidium helmeri, Characidium mirim, Characidium nana, Characidium nupelia, Characidium sterbai ...
Leonardo Oliveira‐Silva   +6 more
wiley   +1 more source

A new South American darter (Crenuchidae: Characidium) from rivers draining the Northeastern Mata Atlantica Freshwater Ecoregion, Brazil: morphological and molecular evidence

open access: yesJournal of Fish Biology, EarlyView.
Abstract Characidium tupi, a new species from rivers draining the southern portion of the Northeastern Mata Atlantica Freshwater Ecoregion, is described. The new species can be distinguished from all congeners by its colour pattern, including 7–14 dark bars enlarged and more conspicuous on their ventralmost portion, resulting in a longitudinal series ...
Angela M. Zanata   +1 more
wiley   +1 more source

A COMPARATIVE STUDY OF COGNITIVE PROCESSING IN ORAL MATHEMATICS TESTS AMONG MALAYSIAN ORANG ASLI PUPILS

open access: yesMalaysian Journal of Learning and Instruction
Purpose – This study investigates the mathematics performance of Orang Asli pupils across two cognitive domains—Knowing and Applying—using three oral mathematics tests developed in different languages: the academic language (Bahasa Melayu) (OBM), the ...
Arsaythamby Veloo   +2 more
doaj   +1 more source

Ticept: Wideband Electrical Properties Tomography by Tissue Composition Assessment With Quantitative  1$$ {}^1 $$H 23$$ {}^{23} $$Na 39$$ {}^{39} $$K Multinuclear MRI

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 3, Page 1503-1512, March 2026.
ABSTRACT Purpose To develop a noninvasive method for estimating dielectric properties over a wide frequency range from 50 to 600 MHz. Existing methods are limited in accuracy and provide single‐frequency results. Furthermore, accurate knowledge of dielectric properties becomes more important, since medical device design and safety evaluation ...
Laura J. C. Barendsz   +5 more
wiley   +1 more source

A New Surface Rupture of the 1556 Huaxian M ∼ 8.5 Earthquake Revealed by Rock Surface Luminescence Dating of a Bedrock Fault Scarp and Colluvial Wedges

open access: yesGeophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Bedrock fault scarps and their associated colluvial wedges provide key evidence for reconstructing paleoearthquakes. We apply rock surface luminescence dating to a bedrock scarp on the Huashan fault in central China, using OSL‐depth profiles (DPs) from multiple heights. Results reveal two coseismic displacements of 6.8 and >1.0 m.
Ming Luo   +8 more
wiley   +1 more source

An Organic Semiconductor Lasing Crystal Featuring Triplet‐Triplet Annihilation

open access: yesAggregate, Volume 7, Issue 2, February 2026.
An organic semiconductor crystal emitter of BH001 is reported to exhibit stimulated emission with the aid of triplet‐triplet annihilation (TTA). The crystal achieves low‐threshold blue laser emission (Pth = 15.4 µJ/cm2) under femtosecond pulsed laser excitation. Notably, stimulated emission persists even when pumped by nanosecond lasers, indicating its
Tianhao Tang   +11 more
wiley   +1 more source

On‐Resin Pictet–Spengler Cyclization for 1,2,3,4‐Tetrahydro‐β‐carboline‐3‐carboxylate (Tcc) Peptide Synthesis With Acid‐Labile Functional Tolerance

open access: yesJournal of Peptide Science, Volume 32, Issue 2, February 2026.
The constrained tryptophan (Trp) analog 1,2,3,4‐tetrahydro‐β‐carboline‐3‐carboxylic acid (Tcc) is used to restrict peptide conformation in structure–activity relationship studies. Although Pictet–Spengler cyclization of Trp and aldehydes with mineral acid gives Tcc analogs, such harsh conditions do not tolerate acid‐labile functionality.
Omer S. L. N'dri   +10 more
wiley   +1 more source

Non-destructive Dielectric Measurements and Calibration for Thin Materials Using Waveguide-Coaxial Adaptors

open access: yesMeasurement Science Review, 2014
This paper focuses on the calibration of apertures for rectangular waveguides using open-short-load (OSL) standards and transmission-line (TL) approaches. The reflection coefficients that were measured using both calibration techniques were compared with
You K. Y.   +3 more
doaj   +1 more source

Filomicelle‐Embedded Composite Hydrogels for Localized Gelation Within the Anterior Chamber of the Eye

open access: yesSmall, Volume 22, Issue 7, 2 February 2026.
A composite hydrogel (C‐gel) incorporating PEG‐b‐PPS filomicelles enables localized in situ gelation and sustained nanocarrier release within the anterior chamber. The filamentous structure promotes spatial confinement of multi‐arm polymer crosslinking, even upon injection into large aqueous volumes, and gradually transitions into spherical micelles ...
Hyeohn Kim   +6 more
wiley   +1 more source

Adapting Open-space Learning Techniques to Teach Cultural Literacy

open access: yesOpen Cultural Studies, 2018
There is a growing body of work on the theory of cultural literacy, but little has been written on how to teach cultural literacy in higher education contexts.
Ochoa Gabriel García   +2 more
doaj   +1 more source

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