Results 81 to 90 of about 5,637,270 (277)

Retrieval and spatiotemporal variation of chlorophyll-a concentration in Baiyangdian Lake based on machine learning

Ecological Indicators
Baiyangdian Lake, the largest shallow freshwater lake in northern China, plays a critical ecological role in the Beijing-Tianjin-Hebei region. However, it faces increasing eutrophication pressure due to anthropogenic activities and climate change ...
Leilei Shi, Chen Gao, Zhilong Zhang
doaj   +1 more source

Evaluation of optical remote sensing-based shallow water bathymetry for recursive mapping

Geocarto International, 2017
AbstractWater depth estimation using optical remote sensing offers a reliable and efficient means of mapping coastal zones. Here, we aim to find a suitable model for fast and practical bathymetry of an estuary using Indian Remote Sensing Satellite (IRS) Linear Imaging Self Scanning Sensor (LISS-3) images.
Lydia Sam, Ganesh Prusty, Nidhi Gahlot
openaire   +1 more source

Displacive In‐Plane Ferroelectricity with Domain‐Specific Curie Temperature in Van der Waals Semiconductors

Advanced Science, EarlyView.
Temperature‐dependent electron diffraction on tin monochalcogenides demonstrates a gradual displacive transformation between ferroelectric and paraelectric phases with significant variability in lattice constants and Curie temperature (TC). Periodic variations exist even between domains in individual crystals, implying a domain‐specific Curie ...
Peter Sutter, Eli Sutter
wiley   +1 more source

First-Derivative Analysis for Estimating Water Quality and Optical Metrics in Shallow Coastal Waters

Remote Sensing
The study quantifies correlations between remote sensing reflectance (Rrs), first derivatives (FDs), and water quality and optical metrics: chlorophyll-a (Chl-a), phaeopigments (Pha), total suspended matter (TSM), coloured dissolved organic matter (CDOM), and the scalar ambient attenuation coefficient for photosynthetically active radiation, K0(PAR ...
Aminah Kaharuddin, Stefan Forster, Hendrik Schubert   +2 more
openaire   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Satellite monitoring of coral reef responses to the 2022 volcanic ash deposition of the Hunga Tonga–Hunga Ha‘apai

Environmental Research Letters
Volcanic ash deposition can influence coral reef ecosystems, yet its impacts remain poorly quantified due to the rarity and limited field observations. Here, we combined Sentinel-2 imagery with a shallow-water radiative transfer model to retrieve bottom ...
Yunhan Ma, Huaguo Zhang, Tong Han, Enze Wang, Vani Koroisamanunu, Wenting Cao   +5 more
doaj   +1 more source

Comparative Analysis of SBES Bathymetry and Machine Learning-Based Satellite-Derived Bathymetry from Sentinel-2 in the Coastal Waters of Dubibir, Situbondo

JFMR-Journal of Fisheries and Marine Research
Accurate Bathymetryc information in shallow coastal waters is critical for marine navigation, coastal zone management, habitat assessment, and environmental monitoring.
M. Arif Zainul Fuad, Rizky Wisudawan Zannuar, Seftiawan Syamsu Rijal, Fahreza Okta Setyawan   +3 more
doaj   +1 more source

Tracer dynamics in two-layer density stratified estuarine flow [PDF]

, 2014
This paper considers tidal-driven particle motion in Tampa Bay, Florida, USA under fully stratified conditions with riverine inflow. The flow field is modelled by means of the two-layer shallow-water equations solved on an adaptive quadtree grid using a ...
Taylor, Paul, Borthwick, Alistair, Lee, Wei-Koon   +2 more
core   +1 more source

Halide Perovskite: A Rich Source of Thermal Insulator

Advanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye, Bangzhi Ge, Yuan Yu, Chongjian Zhou   +3 more
wiley   +1 more source

A Monolithic Janus Hydrogel Pressure Sensor for Wearable Motion and Physiological Monitoring

Advanced Science, EarlyView.
This work reports a monolithic Janus hydrogel pressure sensor featuring integrated conductive PEDOT and insulating PEGDA layers. The fabricated device achieves a rapid response time, a wide operating range, and good cyclic durability. The sensor demonstrates robust performance in tracking dynamic human joint motions, offering a scalable strategy for ...
Syed Atif Ali, Zeeshan Alam Ansari, Reynaldo Carlos Kuizon Montalbo, Hailemichael Ayalew, Yu‐Sheng Hsiao, Chih‐Wei Chu, Hsiao‐hua Yu, Hsiung‐Lin Tu   +7 more
wiley   +1 more source