Results 71 to 80 of about 1,725 (197)

Forcing Pulsations by Means of a Siren for Gas Turbine Applications

International Journal of Turbomachinery, Propulsion and Power, 2020
A siren is a robust fast-valve that generates effective flow pulsations and powerful noise levels under well-controlled conditions. It operates under the inlet flow conditions of a gas turbine combustor.
Fabrice Giuliani, Markus Stütz, Nina Paulitsch, Lukas Andracher   +3 more
doaj   +1 more source

Exploring the Frontiers of Cell Temperature Measurement and Thermogenesis

Advanced Science, Volume 12, Issue 1, January 9, 2025.
This review focuses on the mechanisms of local temperature generation within cells and the methods developed for accurate temperature assessment. Contact and noncontact techniques are introduced, including infrared thermography, fluorescence thermometry, and other innovative localized temperature measurement approaches.
Hanliang Zhu, Haotian Xu, Yue Zhang, Jan Brodský, Imrich Gablech, Marie Korabečná, Pavel Neuzil   +6 more
wiley   +1 more source

A Deep Learning‐Based Approach to Characterize Skull Physical Properties: A Phantom Study

Journal of Biophotonics, Volume 18, Issue 1, January 2025.
We extracted various features from ultrasound signals using skull‐mimicking phantoms (including variation in thicknesses and porosity) and analyzed them using machine learning and deep learning models. The evaluation demonstrated that ML‐ and DL‐trained models could predict the physical characteristics of skull phantoms with reasonable accuracy for ...
Deepika Aggrawal, Loïc Saint‐Martin, Rayyan Manwar, Amanda Siegel, Dan Schonfeld, Kamran Avanaki   +5 more
wiley   +1 more source

Adaptive Vibration Control of the Moving Cage in the 4 ×$\times$ 4 Hyperbolic PDE‐ODE Model of the Dual‐Cable Mining Elevator

IET Control Theory &Applications, Volume 19, Issue 1, January/December 2025.
This paper proposes an observer‐based adaptive output‐feedback boundary control to stabilize the vibrations of the moving cage of a dual‐cable mining elevator. This system is comprised of two mechanically jointed winding drums that drive the two cables through the floating sheaves to lift the cage.
Elham Aarabi, Mohammadali Ghadiri‐Modarres, Mohsen Mojiri   +2 more
wiley   +1 more source

Toward functional ultrasound-modulated optical tomography: a phantom study [PDF]

, 2008
We present the feasibility of functional ultrasound-modulated optical tomography (UOT) in tissue phantoms with two optical wavelengths. By using intense acoustic bursts and a CCD camera-based speckle contrast detection technique, we observe variations of
Kim, Chulhong, Wang, Lihong V.
core  

Influence of Chemical Treatment on the Performance of Natural Fiber–Based Termite Mound Soil Composite Bricks for Masonry Applications

Journal of Engineering, Volume 2025, Issue 1, 2025.
This study investigates the mechanical, physical, and thermal properties of termite mound soil (TMS) composites reinforced with coconut fibers (CFs) and empty fruit bunch spikelet fibers (EFBSF), addressing Cameroon’s housing crisis with sustainable building materials.
Wannyuy Kingsly Mofor, Yakum Reneta Nafu, Tchemou Gilbert, Foba Josepha Tendo, Yuyoh Gemlak Paul, Kuhlon Divine Dinven, Akongoh Reuben Magbeshi, Arpan Hazra   +7 more
wiley   +1 more source

Correction of the effects of acoustic heterogeneity on thermoacoustic tomography using transmission ultrasound tomography [PDF]

, 2006
The effects of acoustic heterogeneities on thermoacoustic tomography (TAT) are examined and corrected. One assumption made in the existing reconstruction algorithms for thermoacoustic tomography is that biological tissue is acoustically homogeneous.
Jin, Xing, Wang, Lihong V.
core  

Perspectives and Energy Applications of Magnetocaloric, Pyromagnetic, Electrocaloric, and Pyroelectric Materials

Advanced Energy Materials, Volume 14, Issue 39, October 18, 2024.
This perspective paper outlines a strategic roadmap for potential breakthroughs in solid‐state heating, cooling, and energy harvesting technologies by 2040, focusing on electrocaloric, pyroelectric, magnetocaloric, pyromagnetic, multicaloric, and multipyroic materials and their applications.
Katja Klinar, Jia Yan Law, Victorino Franco, Xavier Moya, Andrej Kitanovski   +4 more
wiley   +1 more source

Towards very high resolution imaging in ultrasound-modulated optical tomography of biological tissues [PDF]

, 2006
We explored the possibility of applying very high ultrasound frequencies to achieve very high resolution in ultrasound-modulated optical tomography of soft biological tissues.
Kothapalli, Sri-Rajasekhar, Sakadžić, Sava, Wang, Lihong V.   +2 more
core  

Thermoacoustic refrigeration for space applications

Space Programs and Technologies Conference, 1991
A thermoacoustic refrigerator has been designed, tested, and certified by NASA to be flown aboard the space-shuttle get-away-special (GAS) payload program on STS-42 in January 1992. This thermoacoustic heat pump uses acoustic power to pump heat from a low-temperature source to a high-temperature sink. It has only 15 g of moving mass operating at 400 Hz,
Garrett, Steven L., Adeff, Jay A., Hofler, Thomas J.   +2 more
openaire   +2 more sources