Results 151 to 160 of about 1,107,800 (358)

An Integrated Stainless Steel‐Based Electrode for Durable Direct Natural Seawater Electrolysis

open access: yesAdvanced Materials, EarlyView.
We report an integrated stainless steel‐based electrode featuring Pt atomic clusters anchored on a NiFe‐LDH anticorrosive layer. By regulating interfacial water dynamics to suppress chloride attack, this hierarchical architecture achieves superior durability (over 1000 h) and energy efficiency in direct seawater electrolysis, offering a cost‐effective ...
Jiankun Li   +10 more
wiley   +1 more source

Criminalidad, violencia y gasto público en defensa, justicia y seguridad en Colombia [PDF]

open access: yes
This document describes the evolution of defense, justice and security spending and criminality in Colombia since 1950. It presents some considerations about its efficiency and analyzes some pertinent indicators.
Carlos Esteban Posada   +1 more
core  

Armed violence, governance, security sector reform, and safety security and access to justice [PDF]

open access: yes, 2004
This briefing aims to highlight and clarify the importance of the availability and misuse of small arms and light weapons (SALW), and associated armed violence, for development programming in the areas of governance, security sector reform (SSR), and ...
Bourne, Mike, Greene, Owen J.
core  

Mechanically Tunable Mechanochromic Device with Covert‐Overt Structural Color and Modulation of its Transparency

open access: yesAdvanced Materials Interfaces, EarlyView.
This study presents a novel mechanically responsive optical device that modulates light transmission and generates iridescent structural colors under reflection. The optical transition arises from the exposure of nanoparticles upon stretching, which are initially embedded beneath the surface.
Nguyen Hoang Minh   +4 more
wiley   +1 more source

EC Visa Facilitation and Readmission Agreements: Implementing a New EU Security Approach in the Neighbourhood [PDF]

open access: yes
With the Eastern Enlargement successfully completed, the EU is searching for a proper balance between internal security and external stabilisation that is acceptable to all sides.
Florian Trauner, Imke Kruse
core  

The Poverty of Posner\u27s Pragmatism: Balancing Away Liberty After 9/11 [PDF]

open access: yes, 2007
This review of Richard Posner\u27s Not a Suicide Pact: The Constitution in a Time of National Emergency argues that Posner\u27s particular brand of pragmatic utilitarianism is particularly ill-suited to constitutional interpretation, as it seems to ...
Cole, David
core   +1 more source

Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications

open access: yesAdvanced Materials Technologies, EarlyView.
A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley   +1 more source

Laser‐Based Solidification of Cermets/Cemented Carbides: Processing‐Microstructure‐Property Relationships

open access: yesAdvanced Materials Technologies, EarlyView.
Recent research on laser‐processed cermets and cemented carbides highlights significant advancements, yet a notable paucity of studies and persistent challenges remain. Efforts are increasingly focused on developing low‐cost, environmentally friendly cermets as alternatives to conventional materials.
Himanshu Singh Maurya   +2 more
wiley   +1 more source

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