Results 111 to 120 of about 190,707 (309)

Functional anatomy of the subthalamic nucleus and the pathophysiology of cardinal features of Parkinson's disease unraveled by focused ultrasound ablation

The subthalamic nucleus (STN) modulates basal ganglia output and plays a fundamental role in the pathophysiology of Parkinson's disease (PD). Blockade/ablation of the STN improves motor signs in PD.
Martínez-Fernández, Raúl, Máñez-Miró, Jorge U, Pineda-Pardo, José A, Obeso, José A, Del Álamo, Marta, Rodriguez-Rojas, Rafael   +5 more
core   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Low-intensity focused ultrasound (LIFU)-induced acoustic droplet vaporization in phase-transition perfluoropentane nanodroplets modified by folate for ultrasound molecular imaging

, 2017
Jianxin Liu,1,* Tingting Shang,1,* Fengjuan Wang,1 Yang Cao,1 Lan Hao,1 JianLi Ren,1,2 Haitao Ran,1,2 Zhigang Wang,1,2 Pan Li,1,2 Zhiyu Du3 1Chongqing Key Laboratory of Ultrasound Molecular Imaging, 2Department of Ultrasound, 3Postgraduate Department ...
Liu J, Hao L, Ren J, Ran H, Cao Y, Wang F, Li P, Du Z, Wang Z, Shang T   +9 more
core  

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

The frequency-dependent directivity of a planar Fabry-Perot polymer film ultrasound sensor

, 2007
A model of the frequency-dependent directivity of a planar, optically-addressed, Fabry-Perot (FP), polymer film ultrasound sensor is described and validated against experimental directivity measurements made over a frequency range of 1 to 15 MHz and ...
Beard, PC, Cox, BT
core  

The road to clinical use of high-intensity focused ultrasound for liver cancer: technical and clinical consensus

, 2013
Clinical use of high-intensity focused ultrasound (HIFU) under ultrasound or MR guidance as a non-invasive method for treating tumors is rapidly increasing. Tens of thousands of patients have been treated for uterine fibroid, benign prostate hyperplasia,
Hananel A, Salomir R, Pauly KB, Huff-Simonin H, Shapira Y, Eames M, Haar GT, Gedroyc WM, Napoli A, Ries M, Kassell N, Moonen C, Aubry JF, Ye F, Sekins KM, Sokka S   +15 more
core   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Laser-nucleated acoustic cavitation in focused ultrasound

, 2011
Acoustic cavitation can occur in therapeutic applications of high-amplitude focused ultrasound. Studying acoustic cavitation has been challenging, because the onset of nucleation is unpredictable. We hypothesized that acoustic cavitation can be forced to
Bjoern Gerold, McDougall, Craig, McGloin, David, Spiros Kotopoulis, Gerold, Bjoern, Kotopoulis, Spiros, Michiel Postema, Paul Prentice, Prentice, Paul, Postema, Michiel, David McGloin, Craig McDougall   +11 more
core   +1 more source

Focused Ultrasound

Investigative Radiology
Abstract Invasive open surgery used to be compulsory to access tumor mass to perform excision or resection. Development of minimally invasive laparoscopic procedures followed, as well as catheter-based approaches, such as stenting, endovascular surgery, chemoembolization, brachytherapy, which minimize side effects and reduce the risks to ...
Chrit T.W. Moonen, Joseph P. Kilroy, Alexander L. Klibanov   +2 more
openaire   +2 more sources

FOCUSING ULTRASOUNDS BEAM

Physics for Economy, 2017
The focused ultrasound beam is very important in diagnostics and medical treatments. The aim of the study is to analyze the basic physical phenomena in the process of focusing the ultrasonic wave. Based on the measured temperature in the focus of the ultrasonic beam. The compatibility of the temperature measurement by the method HIFU optical fiber.
Paulina KALAMARZ, Magdalena ZAGROBELNA, Leszek PYZIAK   +2 more
openaire   +1 more source