Results 41 to 50 of about 7,075,928 (250)

Sustainable Poly(Lactic Acid)/Graphene Oxide Bioelectronic Platform for Neurotransmitters Sensing and Tunable Stimulation of Astrocytes

open access: yesAdvanced Materials, EarlyView.
This work introduces sustainable PLA/graphene oxide bioelectronic interfaces featuring electrodes with tunable conductivity and strong electrocatalytic performance. These platforms were used to implement a new method for tuning astrocyte Ca2+ signaling and for the efficient detection of key biomarkers.
Alessandra Scidà   +15 more
wiley   +1 more source

Ecological security pattern construction based on landscape ecological risk assessment in the Yellow River basin

open access: yesFrontiers in Environmental Science
The Yellow River Basin is one of the most ecologically fragile zones in China. Landscape ecological risk assessment and ecological security pattern construction are effective ways to find out and solve the problems of the ecological environment in this ...
Jixuan Yan   +9 more
doaj   +1 more source

Implementation of the National Incident Management System (NIMS)/Incident Command System (ICS) in the Federal Radiological Monitoring and Assessment Center(FRMAC) - Emergency Phase [PDF]

open access: yes, 2007
Homeland Security Presidential Directive HSPD-5 requires all federal departments and agencies to adopt a National Incident Management System (NIMS)/Incident Command System (ICS) and use it in their individual domestic incident management and emergency ...
National Security Technologies, LLC
core   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

open access: yesAdvanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park   +14 more
wiley   +1 more source

Changing Homeland Security In 2010: Was Homeland Security Useful? [PDF]

open access: yes, 2011
This article appeared in Homeland Security Affairs (February 2011), v.7 no.1The failure of public safety disciplines to prevent the September 11, 2001 attack gave 'homeland security' its chance to emerge as a competing paradigm for organizing the nation'۪
Bellavita, Christopher
core   +2 more sources

Spatial temporal variability and driving factors of ecological security in the northern slope of Qinling Mountains

open access: yesXi'an Gongcheng Daxue xuebao
In order to further understand the ecological status of the northern slope of Qinling Mountains, high-resolution remote sensing data and fuzzy analytic hierarchy process method were used to build an assessment model for the evolution of ecological ...
HOU Kang   +4 more
doaj   +1 more source

Polyphenol‐Inspired Materials for Agricultural Applications

open access: yesAdvanced Materials, EarlyView.
This review outlines the use of polyphenol‐inspired materials for sustainable agriculture, highlighting their molecular design, interfacial assembly, structure–property relationships, and prospects toward precision agriculture, climate resilience, ecosystem protection, and circular bioeconomy strategies.
Haofu Liu   +8 more
wiley   +1 more source

Micropillar‐Engineered Hybrid Adhesive Patch for Surface‐Conformable and Directional Adhesion

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents a surface‐conformable hybrid adhesive integrating height‐optimized hexagonal micropillars with open‐rectangular cuts. The micropillars enhance rough‐surface contact and microscale crack arrest, while the cuts guide and reverse interfacial cracks for strong and directional adhesion. The multiscale architecture achieves robust pull‐off
Seongjin Park   +4 more
wiley   +1 more source

Optimizing Ecological Zoning in Arid Oases Based on the Multivariate Ecological Security Index: A Case Study of the Kashgar Oasis, China

open access: yesLand
Global climate change and rapid urbanization have intensified ecological security risks in arid oasis regions, creating an urgent need for reliable ecological security assessment and spatial zoning to support regional sustainable development.
Wenhua Xu   +6 more
doaj   +1 more source

Study on Ecological Security Assessment of Dongjiang River Basin in Jiangxi Province Based on PSFR Model

open access: yesRenmin Zhujiang, 2021
In order to find out the ecological security situation of Dongjiang River Basin in Jiangxi Province,and formulate targeted ecological protection measures for protecting the clear water of the Dongjiang River,this paper determines the weight of indexes ...
LIU Huili   +3 more
doaj  

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