Results 41 to 50 of about 134,752 (264)

Earth observation for monitoring and mapping of cyanobacteria blooms. Case studies on five Italian lakes

open access: yesJournal of Limnology, 2016
Cyanobacterial blooms occur in many parts of the world as a result of entirely natural causes or human activity. Due to their negative effects on water resources, efforts are made to monitor cyanobacteria dynamics.
Mariano Bresciani   +10 more
doaj   +1 more source

River Streamflow, Remotely Sensed Water Quality, and Benthic Composition of Previously Undescribed Nearshore Coral Reefs in Northern Puerto Rico

open access: yesFrontiers in Marine Science, 2021
Land-based sediment stress represents a threat to many coral reefs in Puerto Rico primarily as a result of unrestricted land cover/land use changes and poor best management practices.
Juan L. Torres-Pérez   +7 more
doaj   +1 more source

Ratiometric Mycotoxin Detection in Living Plants With Dual‐Emissive Nanosensors

open access: yesAdvanced Materials, EarlyView.
A minimally invasive microneedle patch integrates carbon dot‐embedded metal–organic frameworks as nanosensors to detect a key fungal toxin in living plants. The nanosensor produces a ratiometric fluorescence signal that enables early, non‐destructive diagnosis of fungal infection before visible symptoms, offering a new biomaterials‐based strategy for ...
Yuliang Li   +9 more
wiley   +1 more source

Impacts of Tropical Cyclone Seroja on the Phytoplankton Chlorophyll-a and Sea Surface Temperature in the Savu Sea, Indonesia

open access: yesIEEE Access, 2021
Tropical cyclone (TC) Seroja was a rare climatic event in the Indonesian Seas, particularly in the Savu Sea. This unprecedented event, which occurred on April 4, 2021, caused fatalities and severe damage to the region’s infrastructure and economy.
Riza Yuliratno Setiawan   +6 more
doaj   +1 more source

Electrically Coded Retinomorphic Spectrophotodetector

open access: yesAdvanced Materials, EarlyView.
Self‐powered retinomorphic pyro‐photodetector is demonstrated that avoids machine‐learning post‐processing and covers 365–940 nm. Electrostatic balancing of built‐in potential produces an electrical wavelength code, delivering <3 nm wavelength decoding accuracy with ∼46 µs response.
Mohit Kumar, Hyunmin Dang, Hyungtak Seo
wiley   +1 more source

Semi-analytical inversion modelling of Chlorophyll a variability in the U.S. Virgin Islands

open access: yesFrontiers in Remote Sensing, 2023
Coral reef health in the U.S. Virgin Islands (USVI) is in decline due to land-based sources of pollution associated with watershed development and global climate change.
K. Adem Ali   +4 more
doaj   +1 more source

Extinction coefficient for red-shifted chlorophylls: Chlorophyll d and chlorophyll f

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 2012
Both chlorophyll f and chlorophyll d are red-shifted chlorophylls in oxygenic photosynthetic organisms, which extend photon absorbance into the near infrared region. This expands the range of light that can be used to drive photosynthesis. Quantitative determination of chlorophylls is a crucial step in the investigation of chlorophyll-photosynthetic ...
Li, Yaqiong   +4 more
openaire   +2 more sources

Chlorophyll lasers: Stimulated light emission by chlorophylls and Mg-free chlorophyll derivatives [PDF]

open access: yesProceedings of the National Academy of Sciences, 1977
Stimulated emission and lasing have been demonstrated for chlorophyll a , chlorophyll b , and bacteriochlorophyll a as well as for the Mg-free chlorophyll derivatives pheophytin a
J C, Hindman   +3 more
openaire   +2 more sources

Conformable Ferrimagnetic Tattoo Electrodes for Plant Electrophysiology

open access: yesAdvanced Materials Technologies, EarlyView.
The newly developed ferrimagnetic tattoo electrode is capable of measuring plant electrophysiological activity outside the Faraday cage. Its ability to adhere without damaging the plant tissue allows long‐term recordings. This premise opens new avenues for in‐field monitoring of plant health through electrophysiology.
Arianna Melis   +7 more
wiley   +1 more source

Fishing areas characterisation using the SIMOcean platform

open access: yesAquatic Living Resources, 2017
In this study, the relationships between sea surface temperature (SST), chlorophyll-a (Chl-a) concentration and catch locations of sardine (Sardina pilchardus) and Atlantic chub mackerel (Scomber colias) were explored using satellite-derived SST and Chl ...
Lamas Luisa   +6 more
doaj   +1 more source

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