Results 101 to 110 of about 2,901,632 (355)

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Troubling Trends in Terrorism and Attacks on Surface Transportation: The Outlook Is Grim, but People Still Have a Great Deal of Control [PDF]

open access: yes, 2015
This Transportation Security Perspective is the seventh in a continuing series produced by the National Transportation Safety and Security Center of the Mineta Transportation Institute.
Butterworth, Bruce R., Jenkins, Brian M.
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 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

Administrative-Law Status of National Security Agencies

open access: yesRevista Jurídica Portucalense
The article analyses the administrative-law approaches that regulate the activities of national security agencies with an emphasis on their ability to adapt to new challenges.
Inna PIDBEREZNYKH   +4 more
doaj   +1 more source

Horizon scanning: bringing strategic insight to national security policymaking [PDF]

open access: yes
The Australian Government has recently undertaken a number of concrete initiatives to enhance national security policy coordination. As of the date of publication of this paper, some have been implemented, such as the ‘All Hazards National Assessment’ on
David Connery
core  

Department of Homeland Security Science and Technology Directorate: Developing Technology to Protect America [PDF]

open access: yes, 2009
In response to a congressional mandate and in consultation with Department of Homeland Security's (DHS) Science and Technology Directorate (S&T), the National Academy conducted a review of S&T's effectiveness and efficiency in addressing homeland ...
Barry Bozeman   +5 more
core  

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