Results 91 to 100 of about 2,586,847 (282)

Ultrasonic distance sensor improvement using a two-level neural network [PDF]

, 1995
This paper discusses the performance improvement that a neural network can provide to a contactless distance sensor based on the measurement of the time of flight (TOF) of an ultrasonic (US) pulse.
Ferraris, Franco, U. Grimaldi, A. Carullo, GRIMALDI U., Graziani, S., S. Graziani, Parvis, Marco, Graziani S, Grimaldi U, Carullo, Alessio, GRAZIANI S., M. Parvis, Grimaldi, U., F. Ferraris   +13 more
core   +1 more source

Low-grade B-cell non-Hodgkin lymphoma in the sternocleidomastoid muscle: a case report and review of literature

Frontiers in Oncology
Primary non-Hodgkin lymphoma (NHL) arising in skeletal muscle is exceedingly rare. We present a case of low-grade B-cell NHL involving the sternocleidomastoid muscle.
Guiping Peng, Xiang Wang, Miao Dai, Miao Dai   +3 more
doaj   +1 more source

Hydrophilic Polymers Enable Gastrointestinal Transit Monitoring by Fluorine‐19 Magnetic Resonance Imaging

Advanced Healthcare Materials, EarlyView.
Hydrophilic fluorinated copolymers dissolve in chyme and give a strong, single 19F signal, unlike phase‐separating perfluorocarbons. Combined 1H‐19F MRI tracks their whole‐gut transit non‐invasively and without ionizing radiation. In rats, the tracers move through the gastrointestinal tract, resist resorption, and are well tolerated, a proof‐of‐concept
Ondřej Groborz, Vít Herynek, Mária Hovořáková, Zuzana Pavlíková, Linda Dalecká, Klára Steklíková, Petr Matouš, Petr Páral, Margarita Tkachenko, Filip Koucký, Fatma Nalan Cetin, Ludmila Maffei Svobodová, Jiří Beneš, Kristýna Kolouchová   +13 more
wiley   +1 more source

A dual frequency, ultrasonic, microengineered particle manipulator

, 2004
Ultrasonic standing waves can be used to generate forces on particles within a fluid. Recent work has concentrated on developing devices that manipulate the particles so that they are concentrated near the centre of the cavity.
Hill, M., Shen, Y., Harris, N.R., White, N.M., Beeby, S.P., Townsend, R.   +5 more
core   +1 more source

Blood–Brain Barrier Regulation: Evolving From Classic Strategies to Electrochemical Ion and Reactive Oxygen Species Control

Advanced Healthcare Materials, EarlyView.
Conventional therapies suffer from poor blood–brain barrier (BBB) penetration and disordered ion/reactive oxygen species (ROS) homeostasis, hindering precise neurological treatment. Electrochemical strategies achieve accurate spatiotemporal regulation of neural homeostasis.
Xiaokang Hu, Caiyu Liu, Meijun Pang, Zhiyuan Shi, Dong Ming, Xiuyun Liu   +5 more
wiley   +1 more source

Position and velocity recovery from independent ultrasonic beacons [PDF]

, 2006
In this paper we present a study on how to estimate the position of a mobile receiver using ultrasonic beacons fixed in the environment. Unlike traditional approaches, the ultrasonic beacons are independent, and positioning is performed by measuring the ...
Wilson, RE, McCarthy, MR, Calway, AD, Muller, HL   +3 more
core  

Chemical Strategies for Multistimuli Responsive Dynamic Covalent Materials in Regenerative Medicine

Advanced Healthcare Materials, EarlyView.
Multistimuli responsive dynamic covalent materials integrate reversible chemistry with the complex chemical, mechanical, and biochemical cues of regenerative environments. This review highlights chemical strategies based on orthogonal dynamic bonds, multicomponent networks, and hierarchical architectures to regulate mechanics, degradation, and ...
Saurabh Joshi, Matthew B. Baker, Dominik Schauenburg   +2 more
wiley   +1 more source

Therapeutic ultrasound and passive mobilisation improve motor function and reduce inflammation in skeletal muscle of immobilised Wistar rats

Journal of Experimental Orthopaedics
Purpose Here we analysed the effects of treatment with therapeutic ultrasound, passive mobilisation and their synergically effects on hind paw' functionality, histomorphometric and immunological aspects in the musculoskeletal tissue in an experimental ...
Fernanda Teixeira Furlan Chico, Ana Caroline Barbosa Retameiro, Aline Reginato, Rafaela Rambo Bremm, Bruna Menegat, Mustafa Munir Mustafa Dahleh, Marina Prigol, Gustavo Petri Guerra, Gladson Ricardo Flor Bertolini, Lucinéia de Fátima Chasko Ribeiro   +9 more
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Double-chambered left ventricle with advanced biventricular failure: a case report

Frontiers in Cardiovascular Medicine
BackgroundDouble-chambered left ventricle (DCLV) is an extremely rare congenital anomaly characterized by an aberrant muscular or fibromuscular septum dividing the left ventricular cavity. Most cases present in childhood or adolescence.
Guiping Peng, Xiang Wang, Cailing Chen, Miao Dai, Miao Dai   +4 more
doaj   +1 more source