Results 31 to 40 of about 1,011,831 (222)
Acute toxicity of arsenic and oxidative stress responses in the embryonic development of the common South American toad Rhinella arenarum [PDF]
, 2015 Arsenic (As), a natural element of ecological relevance, is found in natural water sources throughout Argentina in concentrations between 0.01mg/L and 15mg/L. The autochthonous toad Rhinella arenarum was selected to study the acute toxicity of As and the
Adams +37 more
core +1 more source
X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites
Advanced Functional Materials, EarlyView.We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim +21 more
wiley +1 more source
Development of a state feedback controller for the synchronous buck converter [PDF]
, 2005 A digital control algorithm for a current-mode (CM) and a voltage-mode (VM) synchronous buck converter (SBC) is developed. In both cases, the design leads to a stable controller, even for a duty cycle larger than 50%.
Bortolotto, Gustavo +2 more
core
Novel achromatic single reflection quarter-wave retarder: design and measurement [PDF]
, 2014 In this work, we present an achromatic quarter-wave retarder whose design is based upon the reflection properties of an isotropic-anisotropic interface.
Caré, D. +4 more
core +1 more source
Advanced Materials, EarlyView.2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil +14 more
wiley +1 more source
Influence of magnification on extraction efficiency in laser resonators with non-overlapping beams [PDF]
, 2015 The magnification and the Fresnel number determine the mode profile and losses in a bare unstable resonator. Upon inclusion of gain, both the beam pattern and the reflectivity are changed, more than in a stable cavity, because the counter-propagation ...
Garea, María Teresa +3 more
core +1 more source
Advanced Materials Technologies, EarlyView.This work highlights the impact of incorporating graphene nanoflakes into precursor inks of MAPbBr3 for inkjet‐printed optoelectronic device applications. A substantial modification of the crystallization dynamics is reported despite miniscule concentrations.
Kenneth Lobo +12 more
wiley +1 more source
Educatio Siglo XXI, 2021 Los géneros producidos por estudiantes han comenzado a recibir mayor atención debido a su diversidad de funciones en el aprendizaje disciplinar. Así, este trabajo se enmarca en el ámbito del estudio de géneros de formación en español.
Enrique Sologuren Insúa
doaj
Flow electrification of liquids in rectangular channels - Comparison of different theoretical models [PDF]
, 2017 This paper deals with flow electrification phenomenon of liquids in channels of rectangular cross section. Different theoretical models are described and compared. For all the models, it is assumed that the flow and the diffuse layer are fully developed.
Artana, Guillermo Osvaldo +3 more
core +1 more source
On complementable operators in the sense of T. Ando [PDF]
, 2020 Consider an operator A :H→K between Hilbert spaces and closed subspaces S ⊂ H and T ⊂ K. If there exist projections E on H and F on K such that R(E) =S, R(F) =T and AE=F∗A then A is called (S, T)-complementable.
Arias, Maria Laura +2 more
core +1 more source