Results 51 to 60 of about 811,358 (350)

Measurement-based analysis of Doppler characteristics for ultra-wideband radio channels in an office environment [PDF]

, 2014
In this work, an analysis of the Doppler characteristics for Ultra-Wideband indoor communication is presented. Channel sounding measurements ranging from 3.1 to 10.6 GHz were performed over the course of several days in an occupied office environment ...
Hanssens, Brecht, Joseph, Wout, Martens, Luc, Oestges, Claude, Tanghe, Emmeric   +4 more
core   +1 more source

A Single‐Metal‐Doped Nanoplatform for Ferroptosis‐Driven cGAS‐STING Pathway Activation in Hepatocellular Carcinoma Immunotherapy

Advanced Functional Materials, EarlyView.
The cGAS‐STING pathway boosts HCC antitumor immunity but lacks specific activation. Nanoplatform ZMRPF induces HCC ferroptosis via lipid ROS, releasing mtDNA. It synergizes with ZMRPF‐released Mn2⁺ to activate cGAS‐STING, amplifies antigen‐presenting cell activity, reverses HCC immunosuppression, and enables robust systemic antitumor immunity ...
Yuchen Zhang, Shuang Feng, Jie Luo, Kaige Xu, Junfeng Guo, Xingyue Zhang, Mengxue Yuan, Qiang Luo, Yu Huang, Chaoqiang Fan, Kibret Mequanint, Donghui Zhu, Malcolm Xing, Shiming Yang   +13 more
wiley   +1 more source

Risk Factors for Intensive Care Unit Admission in Patients with Autoimmune Encephalitis

Frontiers in Immunology, 2017
BackgroundPrevention and early recognition of critical illness in patients with autoimmune encephalitis (AE) is essential to achieve better outcome.Aim of the studyTo evaluate risk factors for intensive care unit (ICU) admission and its prognostic impact
Gayane Harutyunyan, Larissa Hauer, Martin W. Dünser, Tobias Moser, Slaven Pikija, Markus Leitinger, Helmut F. Novak, Wolfgang Aichhorn, Eugen Trinka, Johann Sellner, Johann Sellner   +10 more
doaj   +1 more source

Electro‐Active Polymer Actuated Microfiltration Membranes: Design, Performance, and Particle Dynamics

Advanced Functional Materials, EarlyView.
The concept of foulant particle manipulation and detachment from active microfiltration membranes via voltage‐driven vibrations is introduced. Actuator components are initially integrated onto the filtration membranes using an airbrush spray printing technique.
Irem Gurbuz, Hanieh Bazyar, Andres Hunt
wiley   +1 more source

Versatile mobile communications simulation: the Vienna 5G Link Level Simulator

EURASIP Journal on Wireless Communications and Networking, 2018
Research and development of mobile communications systems require a detailed analysis and evaluation of novel technologies to further enhance spectral efficiency, connectivity and reliability.
Stefan Pratschner, Bashar Tahir, Ljiljana Marijanovic, Mariam Mussbah, Kiril Kirev, Ronald Nissel, Stefan Schwarz, Markus Rupp   +7 more
doaj   +1 more source

Evaluation of carotid flow time to assess fluid responsiveness in the emergency department

Journal of Medical Ultrasound, 2021
Background: Assessing fluid responsiveness in critically ill patients is challenging. Objective, noninvasive tests that are easy to perform are needed. Doppler measurements of dynamic carotid artery parameters such as carotid blood flow (CBF) and carotid
P Immanuel Judson, Kundavaram Paul Prabhakar Abhilash, Kishore Pichamuthu, Gina Maryann Chandy   +3 more
doaj   +1 more source

Radar High Resolution Range & Micro-Doppler Analysis of Human Motions [PDF]

, 2009
In radar imaging it is well known that relative motion or deformation of parts of illuminated objects induce additional features in the Doppler frequency spectra.
Ghaleb, A., Le Kernec, J., Nicolas, J.-M., Vignaud, L.   +3 more
core  

Two-step Doppler cooling of a three-level ladder system with an intermediate metastable level [PDF]

, 2008
Doppler laser cooling of a three-level ladder system using two near-resonant laser fields is analyzed in the case of the intermediate level being metastable while the upper level is short-lived. Analytical as well as numerical results for e.g. obtainable
C. Champenois, C. Zumsteg, F. Vedel, G. Hagel, H. Metcalf, M. Drewsen, M. Houssin, M. Knoop   +7 more
core   +2 more sources

Christian Doppler and the Doppler effect

Eos, Transactions American Geophysical Union, 1984
A summary is given of Doppler's life and career. He was born 180 years ago on November 29, 1803, in Salzburg, Austria. He died on March 17, 1853 in Venice. The effect bearing his name was first announced in a presentation before the Royal Bohemian Society of the Sciences in Prague on May 25, 1842.
openaire   +1 more source

Biodegradable Implantable Electronics with Wireless Technology for Real‐Time Clinical Applications

Advanced Healthcare Materials, EarlyView.
The article explores how bioresorbable implantable electronics merge wireless communication and power delivery with biodegradable materials to enable real‐time clinical applications. It highlights advances in materials, system design, and medical uses across neural, cardiovascular, digestive, immune, and drug‐delivery systems.
Myeongki Cho, Jeong Woo Chae, Young‐Jin Park, Ki Jun Yu, Sang Min Won   +4 more
wiley   +1 more source