Results 41 to 50 of about 3,883,996 (359)

Assessing the Microstructure of SnBiZn Alloys during Semisolid Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
The development of Sn‐based alloys for semisolid processing is crucial for Industry 4.0. This study investigates Sn40Bi and Sn40Bi2Zn alloys, revealing that Zn refines Sn‐rich globules by pinning dendrite boundaries. Bi saturation occurs at 60 min, while Zn enhances globule microhardness at 90 min through solid solution strengthening.
Carolina de Siqueira Simioli   +2 more
wiley   +1 more source

Over 18% Efficiency from Halogen‐Free Solvent‐Processed Polymer Solar Cells Enabled by Asymmetric Small Molecule Acceptors with Fluoro‐Thienyl Extended Terminal

open access: yesAdvanced Functional Materials, EarlyView.
An asymmetric non‐fullerene acceptor BTP‐FT is developed by extending the end group of Y6‐BO with thiophene. The conformation of the molecule is determined by the noncovalent F···S interaction as demonstrated by 2D NMR and simulations. An efficiency of 18.39% is achieved in the resulting ternary solar cells processed from toluene.
Jingnan Wu   +14 more
wiley   +1 more source

Psychopathy as a Conditional Reproductive Strategy in Boys and Men: An Evolutionary–Developmental Perspective [PDF]

open access: yes, 2022
Psychopathic traits (PTs) are a constellation of traits and behavior that places individuals at-risk for engaging in lifelong chronic and severe antisociality, particularly among boys and men.
Brazil, Kristopher
core  

Sono‐Piezo‐Photosynthesis of Ethylene and Acetylene from Bioethanol under Ambient Conditions

open access: yesAdvanced Functional Materials, EarlyView.
A novel sono‐piezo‐photocatalytic strategy enables the conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) under ambient conditions, addressing the limitations of conventional methods that are high‐temperature and energy‐intensive. By using an advanced graphene oxide/sodium bismuth titanate heterostructure catalyst, this work achieved ...
Yue Jiang   +21 more
wiley   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

The Reverse Brazil Nut Problem: Competition between Percolation and Condensation [PDF]

open access: yes, 2000
In the Brazil nut problem (BNP), hard spheres with larger diameters rise to the top. There are various explanations (percolation, reorganization, convection), but a broad understanding or control of this effect is by no means acheived. A theory is presented for the crossover from the BNP to the reverse Brazil nut problem (RBNP) based on a competition ...
arxiv   +1 more source

Colloidal brazil nut effect in sediments of binary charged suspensions [PDF]

open access: yesEurophys. Lett., 68 (1), pp. 120-126 (2004), 2004
Equilibrium sedimentation density profiles of charged binary colloidal suspensions are calculated by computer simulations and density functional theory. For deionized samples, we predict a colloidal ``brazil nut'' effect: heavy colloidal particles sediment on top of the lighter ones provided that their mass per charge is smaller than that of the ...
arxiv   +1 more source

DO "CONHECE-TE A TI MESMO" AO "TORNA-TE QUEM TU ÉS": NIETZSCHE CONTRA SÓCRATES EM ECCE HOMO

open access: yesRevista Trágica, 2019
A partir de uma passagem interessante da autobiografia do filósofo, trabalharemos dois imperativos gregos, o “Conhece-te a ti mesmo”, do oráculo de Delfos, e o “Torna-te o que tu és”, do poeta Píndaro.
Luciano Gomes Brazil
doaj   +1 more source

Integrated Care in the Community: The Case of the 'Programa Maior Cuidado' (Older Adult Care Programme) in Belo Horizonte-Minas Gerais, BRA

open access: yesInternational Journal of Integrated Care, 2021
Internationally, there is a large body of scientific evidence concerning the benefits of integrating health and social care to ensure that frail older people living in the community receive the assistance they need to maintain independence.
Janaína de Souza Aredes   +4 more
doaj   +1 more source

An exploration of authenticity: implications for clinical psychologists and their practice [PDF]

open access: yes, 2016
The present study explored how authenticity is constructed by clinical psychologists and asked what might be the implications of these discourses.
Brazil, J., Brazil, J.
core  

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