Results 31 to 40 of about 4,763,301 (244)

Incorporating multiple scenarios and landscape ecological risk to optimize ecological security patterns: A Wei River Basin case study

open access: yesChinese Journal of Population, Resources and Environment
Under the influence of human activities, landscape fragmentation in the Wei River Basin (WRB) has become increasingly severe. Upstream development has intensified soil erosion, and industrial and agricultural pollution in the middle reaches has degraded ...
Xueting Wu, Jinghu Pan
doaj   +1 more source

Ecological Security Assessment Based on the “Importance–Sensitivity–Connectivity” Index and Pattern Construction: A Case Study of Xiliu Ditch in the Yellow River Basin, China

open access: yesLand, 2023
Resource, environmental, and ecological issues have become major constraints to the development of many regions. The Yellow River Basin is an important barrier for maintaining ecological security in northern China, but it has been impacted by problems ...
Xinlei Xu   +3 more
doaj   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

Ecological Security Patterns Based on Ecosystem Services and Local Dominant Species in the Kunlun Mountains

open access: yesDiversity
Constructing an ecological security pattern in ecologically fragile areas is crucial for maintaining regional ecological stability. This study focuses on the Kunlun Mountain region, identifying ecological sources based on habitat suitability assessments ...
Jianglong Yuan   +9 more
doaj   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

open access: yesAdvanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali   +16 more
wiley   +1 more source

Nevada National Security Site Waste Acceptance Criteria [PDF]

open access: yes, 2010
This document establishes the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO) Nevada National Security Site Waste Acceptance Criteria (NNSSWAC).
National Security Technologies, LLC
core   +1 more source

Landscape pattern evolution and ecological security assessment based on land use changes in mining cities: a case study of Heihe city

open access: yesFrontiers in Environmental Science
The development of mining cities has led to changes in land use and the evolution of landscape patterns. Constructing an ecological security evaluation system can reflect the ecological security status of mining city areas and provide planning references
Yu Shi   +5 more
doaj   +1 more source

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 Risk Assessment and Ecological Security Pattern Optimization in Binzhou City

open access: yesChemical Engineering Transactions, 2018
In this research, we created an assessment model based on ecological footprint and ecological carrying capacity (EC) to detect the trend of urbanization in Binzhou city. In this model, we utilized four new indicators based on EF and EC by adding economic
Zhang Meng   +4 more
doaj   +1 more source

Evaluation and Prediction of Landscape Ecological Security Based on a CA-Markov Model in Overlapped Area of Crop and Coal Production

open access: yesLand, 2023
Overlapped areas of crop and coal production are responsible for national food security and mineral resource supply. However, long-term coal mining and urban and rural construction have continuously impacted the structure and functions of the original ...
Hebing Zhang   +3 more
doaj   +1 more source

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