Results 41 to 50 of about 513,972 (303)

A low cost, low power sap flux device for distributed and intensive monitoring of tree transpiration

open access: yesHardwareX, 2022
Accurate estimation of transpiration in individual trees is important for understanding plant responses to environmental drivers, closing the water balance in forest stands and catchments, and calibrating earth system models, among other applications ...
Justin Beslity   +6 more
doaj   +1 more source

LOW COST SOLAR THERMOELECTRIC WATER FLOATING DEVICE TO SUPPLY MEASUREMENT PLATFORM

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2019
This work presents the prototype of the solar - thermoelectric device, which can float on water surface. It produces electrical energy as a result of the Seebeck effect in a commercial, low-cost Peltier module.
Andrzej Nowrot   +4 more
doaj   +1 more source

Dynamic Assessment of Axial Load in Tie-Rods by Means of Acoustic Measurements

open access: yesBuildings, 2020
Tie-rods are structural elements of crucial importance in ancient buildings to ensure structural integrity and safety, so the assessment of their effectiveness via an estimation of the axial load is of great importance.
Carlo Resta   +2 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Development of a Low-Cost Portable EMG for Measuring the Muscular Activity of Workers in the Field

open access: yesSensors, 2023
This study explores the development and validation of a low-cost electromyography (EMG) device for monitoring muscle activity and muscle fatigue by monitoring the key features in EMG time and frequency domains.
Mohamed Garouche, Ornwipa Thamsuwan
doaj   +1 more source

Acoustic tamper detection sensor with very low false alarm rate

open access: yes, 2008
We describe a device designed to detect interference (vandalism or tampering) by acoustic means. The design employs both a piezoelectric vibration transducer and a common microphone in a novel mechanical arrangement.
Lawrence Muijlwijk   +3 more
core   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

open access: yesFEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee   +3 more
wiley   +1 more source

Development of a Low-Cost Device for Measuring Ultraviolet Solar Radiation

open access: yesFrontiers in Environmental Science, 2022
Accurate measurements of solar ultraviolet radiation are needed for air quality monitoring, especially to understand the formation and photolysis of tropospheric ozone near the ground.
Antonio Serrano   +3 more
doaj   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

open access: yesFEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas   +6 more
wiley   +1 more source

A Low-Cost Remotely Configurable Electronic Trap for Insect Pest Dataset Generation

open access: yesApplied Sciences
The precise monitoring of insect pest populations is the foundation of Integrated Pest Management (IPM) for pests of plants, humans, and animals. Digital technologies can be employed to address one of the main challenges, such as reducing the IPM ...
Fernando León-García   +4 more
doaj   +1 more source

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