Results 91 to 100 of about 50,068 (210)

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 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

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

Les sables de Fontainebleau: a natural quartz reference sample and its characterisation [PDF]

open access: yes, 2017
Fundamental studies on luminescence production in natural quartz require samples which can be studied by groups of laboratories using complementary methods.
Adamiec, Gregorz   +9 more
core  

Isolated in the highlands, found in the museum: A new species of Characidium (Crenuchidae) from a Bolivian National Park, with a CT scan revealing features

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of Characidium is described from a small, isolated river in the highland areas of Noel Kempff Mercado National Park, Bolivia. The new taxon can be diagnosed by the presence of a relatively broad and conspicuous dark midlateral stripe extending from the tip of snout to the base of the caudal fin, markedly darker than the vertical ...
Leonardo Oliveira‐Silva   +3 more
wiley   +1 more source

Regularity of set-valued maps and their selections through set differences. Part 2: One-sided Lipschitz properties [PDF]

open access: yes, 2013
We introduce one-sided Lipschitz (OSL) conditions of setvalued maps with respect to given set differences. The existence of selections of such maps that pass through any point of their graphs and inherit uniformly their OSL constants is studied.
Baier, Robert, Farkhi, Elza
core   +1 more source

Battery‐Free UV‐Dose Detector via Defect‐Engineered Ca2SnO4:RE (RE = Sm3+, Pr3+) Oxide Phosphors

open access: yesCarbon Neutralization, Volume 5, Issue 3, May 2026.
Sm3+/Pr3+‐doped Ca2SnO4 (CSO:RE) phosphors exhibit orange/deep‐red 4f–4 f emissions and defect‐related luminescence. LPL, TL, and OSL measurements reveal thermally/optically addressable traps, with OSL signals retained after 504 h dark storage. Embedded in a polymer matrix, CSO:RE enables battery‐free UV‐dose logging under sunlight with optical readout,
Sangwon Wi, Yunsang Lee
wiley   +1 more source

Theoretical Model of Transient Regression of Thermoplastic Materials During Flame Spread: Vaporization; Permanent Mass Loss; Surface Shape

open access: yesFire and Materials, Volume 50, Issue 3, Page 227-240, April 2026.
ABSTRACT This article examines a transient, one‐dimensional model of surface regression during opposed flow flame spread over finite thickness, non‐charring thermoplastics. Gas to solid conductive transfer from the flame drives sample heating. The solid degrades into volatile fuel molecules in two stages: (1) the pre‐vaporization heat‐up stage and (2 ...
Indrek S. Wichman   +4 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

Quantification of three-dimensional folding using fluvial terraces: A case study from the Mushi anticline, northern margin of the Chinese Pamir

open access: yes, 2013
Fold deformation in three dimensions involves shortening, uplift, and lateral growth. Fluvial terraces represent strain markers that have been widely applied to constrain a fold's shortening and uplift.
Burbank, Douglas W.   +4 more
core   +1 more source

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