Results 121 to 130 of about 104,727 (309)

NDIR Gas Sensor for Spatial Monitoring of Carbon Dioxide Concentrations in Naturally Ventilated Livestock Buildings

Sensors, 2015
The tracer gas ratio method, using CO2 as natural tracer, has been suggested as a pragmatic option to measure emissions from naturally ventilated (NV) barns without the need to directly estimate the ventilation rate.
Luciano B. Mendes, Nico W. M. Ogink, Nadège Edouard, Hendrik Jan C. van Dooren, Ilda de Fátima F. Tinôco, Julio Mosquera   +5 more
doaj   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

Advanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio, B. Spedicato, G. Corallo, A. Inguscio, M. Greco, D. Musarò, D. Vergara, A. F. Muro, G. De Sabbata, L. R. Soria, N. Brunetti Pierri, M. Maffia   +11 more
wiley   +1 more source

Intra-cavity spectroscopy using amplified spontaneous emission in fiber lasers

, 2011
Fiber laser sources offer interesting possibilities for gas sensors since they can operate over an extended wavelength range, encompassing the near-IR absorption lines of a number of important gases but a major problem is that overtone absorption lines ...
Norhana Arsad, Min Li, Arsad, Norhana, Johnstone, Walter, Min, Li, George Stewart, Walter Johnstone, Stewart, George   +7 more
core   +1 more source

Recent Advances of Graphene‐Based Wearable Sensors: Synthesis, Fabrication, Performance, and Application in Smart Device

Advanced Materials Interfaces
In recent years, graphene has emerged as a promising material for flexible wearable sensors due to its exceptional properties, including flexibility, high surface area, excellent conductivity, and remarkable mechanical strength.
Fatemeh Saeedi, Reza Ansari, Mojtaba Haghgoo   +2 more
doaj   +1 more source

Laser-Induced Graphene on Polyimide: Material Characterization Toward Strain-Sensing Applications

Sensors
This study investigates the effect of laser power, focal length, and number of passes on the fabrication of graphene-based strain sensors using a 450 nm diode laser at the upper limit of the UV spectrum.
Yessenia Ibeth Paucar, Fernando Pantoja-Suárez, Enric Bertran-Serra, Fernando Sánchez, Katherine Moreno   +4 more
doaj   +1 more source

Standoff Methods for the Detection of Threat Agents: A Review of Several Promising Laser-Based Techniques

Journal of Spectroscopy, 2014
Detection of explosives, explosive precursors, or other threat agents presents a number of technological challenges for optical sensing methods.
J. Bruce Johnson, Susan D. Allen, Jonathan Merten, Lewis Johnson, Daniel Pinkham, Scott W. Reeve   +5 more
doaj   +1 more source

Demonstration of Laser-Fabricated DLSPPW at Telecom Wavelength

IEEE Photonics Journal, 2010
We investigate dielectric-loaded surface plasmon-polariton waveguides (DLSPPWs) fabricated by two-photon polymerization direct laser writing and nanoimprinting at the telecom wavelength of 1550 nm. We examine several types of structures such as lines and
Andreas Seidel, Carsten Reinhardt, Tobias Holmgaard, Wei Cheng, Tiberiu Rosenzveig, Kristjan Leosson, Sergey I. Bozhevolnyi, Boris N. Chichkov   +7 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Numerical Modeling of Excimer Laser Curved Surface Ablation

, 2013
Laser ablation has been widely used in the fabrication of miniature parts. The technique is also used in the fabrication of micro lens or micro-curved surfaces which find potential applications in various optical, bio- medical, electronics, MEMS ...
Marla, Deepak, Saxena, Ishan, Joshi, Suhas S., Garg, Vivek   +3 more
core  

Carbon nanotubes as near infrared laser susceptors

, 2011
The coupling efficiency of carbon nanotubes with near infrared laser radiation at 940nm wavelength was investigated. Nanotubes treated with different post processing methods were irradiated at different laser power intensities as dry samples and ...

core   +1 more source