Results 111 to 120 of about 1,411,732 (246)

Tin Oxide‐Anchored MXene Composites for Enhanced Hydrogen Evolution in Alkaline Media

open access: yesAdvanced Materials Interfaces, EarlyView.
The schematic illustrates a SnO2/MXene heterostructure for efficient hydrogen evolution. SnO2 nanoparticles are uniformly anchored on conductive MXene nanosheets, enhancing charge transfer and catalytic activity. The MXene substrate provides high electrical conductivity and abundant active sites, while SnO2 facilitates water adsorption and dissociation.
Pratik Shinde   +8 more
wiley   +1 more source

On India de John Stuart Mill: barbárie versus civilização e a política de não intervenção [PDF]

open access: yes, 2010
A defender of free-trade and an opponent of monopoly, John Stuart Mill advocated direct rule by the British in India and intended, like his father, to promote good and useful government.
Silva, Elisabete Mendes
core  

Investigation of Structural, Mechanical and Electrochemical Properties of Temperature‐Dependent Dual AlN/TiAlN Coating Synthesized by CVD Process

open access: yesAdvanced Materials Interfaces, EarlyView.
This study investigates thermally CVD‐deposited AlN/TiAlN dual‐layer coatings over a Si substrate, focusing on the temperature‐dependent process‐structure relationship. Systematic characterization reveals that a dense AlN interlayer combined with an optimally deposited TiAlN top layer provides enhancement in mechanical strength, tribological stability,
Soham Das   +4 more
wiley   +1 more source

Avaliação agronômica de novos híbridos e linhagens de mamoeiro no extremo sul da Bahia. [PDF]

open access: yes, 2011
O mamoeiro (Carica papaya L.) é uma das fruteiras mais cultivadas e consumidas nas regiões tropicais e subtropicais do mundo. Seus frutos são amplamente utilizados em dietas alimentares por serem excelentes fontes de cálcio, pró-vitamina A e vitamina C ...
DANTAS, J. L. L.   +2 more
core  

Phonon Engineering in Ultrathin Sn Films

open access: yesAdvanced Materials Interfaces, EarlyView.
When embedded in multilayer structures, ultrathin Sn layers demonstrate strongly modified vibrational density of states (VDOS). This allows engineering a drastic increase of the Lamb‐Mössbauer factor fLM$f_{\text{LM}}$ and thereby of the cross‐section for coherent excitation of the ultrasharp nuclear resonance of 119Sn$^{119}{\rm Sn}$. This enables the
Sven Velten   +9 more
wiley   +1 more source

Awake nasal fibre optic intubation — a simple manoeuvre for easy navigation of the fiberscope through the nasopharynx

open access: yesBrazilian Journal of Anesthesiology, 2019
Vimi Rewari   +2 more
doaj   +1 more source

A Índia Precisa de um Sistema de Garantia de Emprego [PDF]

open access: yes
A Índia Precisa de um Sistema de Garantia de ...
Santosh Mehrotra
core  

“No tempo da Protoglobalização: a Reescrita de um Passado Comum” [PDF]

open access: yes, 2003
Passados mais de cinco séculos após o início oficial das grandes descobertas portuguesas, e depois de mais de uma década de comemorações oficiais, cabe, agora, lançar um olhar, ainda que ligeiro, sobre o que representaram e como é hoje vivido/analisado
Beites Manso, Maria de Deus
core  

Impact of Paper Substrates and Storage Conditions on the Stability of Blood Grouping Assays

open access: yesAdvanced Materials Interfaces, EarlyView.
Four paper‐based blood grouping assays are constructed from cellulose and nitrocellulose, with vertical and lateral flow formats. The optimal storage conditions are determined based on temperature, antibody storage buffer composition, and antibody dilution.
Laura Marcela Rey Gomez   +4 more
wiley   +1 more source

Físicos, cirurgiões e boticários nas naus dos descobrimentos [PDF]

open access: yes, 2000
[...] Uma conclusão parece desde logo legítima e segura: até finais do século XV, seriam muito poucas as armadas que levavam médicos ou oficiais de saúde nas suas guarnições.
Castro, Aníbal de
core  

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