Results 71 to 80 of about 366,258 (347)
Subsurface imaging of samples with SAM
Archives of Acoustics, 2014 The paper presents unique abilities of the acoustic microscope to penetrate and visualize an interior of materials which are opaque to the light. The construction of an acoustic lens optimized for subsurface imaging is described.
J. LITNIEWSKI
doaj
Low-Power RFED Wake-Up Receiver Design for Low-Cost Wireless Sensor Network Applications
Sensors, 2020 The development of wake-up receivers (WuR) has recently received a lot of interest from both academia and industry researchers, primarily because of their major impact on the improvement of the performance of wireless sensor networks (WSNs).
David Galante-Sempere +3 more
doaj +1 more source
A Fully Differential CMOS Potentiostat [PDF]
, 2009 A CMOS potentiostat for chemical sensing in a noisy environment is presented. The potentiostat measures bidirectional electrochemical redox currents proportional to the concentration of a chemical down to pico-ampere range.
Genov, Roman, Nazari, Meisam Honarvar
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Cognitive impairment, fatigue, and depression are common in multiple sclerosis (MS), potentially due to disruption of regional functional connectivity caused by white matter (WM) lesions. We explored whether WM lesions functionally connected to specific brain regions contribute to these MS‐related manifestations.
Alessandro Franceschini +7 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Poststroke fatigue (PSF) and frailty share substantial overlap in their manifestations, yet previous research has yielded conflicting results due to the use of heterogeneous frailty assessment tools. Objective To evaluate the independent impact of frailty on PSF using a unified measurement system (Tilburg Frailty Indicator, TFI ...
Chuan‐Bang Chen +6 more
wiley +1 more source
Applied Sciences, 2017 Laser detection and ranging (LADAR) systems are commonly used to acquire real-time three-dimensional (3D) images using the time-of-flight of a short laser pulse.
Eun-Gyu Lee +4 more
doaj +1 more source
Mismatch distance term compensation in centroid configurations with nonzero-area devices [PDF]
, 1997 This paper presents an analytical approach to distance term compensation in mismatch models of integrated devices. Firstly, the conditions that minimize parameter mismatch are examined under the assumption of zero-area devices.
Fernández Fernández, Francisco Vidal +2 more
core +1 more source
Accelerated Progression of Gait Impairment in Parkinson's Disease and REM Sleep Without Atonia
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective People with Parkinson's disease (PD) and rapid eye movement (REM) sleep without atonia (RSWA) often have more severe gait disturbances compared to PD without RSWA. The association between the presence and expression of RSWA and the rate of progression of gait impairment in PD is unknown.
Sommer L. Amundsen‐Huffmaster +11 more
wiley +1 more source
Journal of Low Power Electronics and Applications, 2012 This paper reports a multi-channel neural spike recording system-on-chip with digital data compression and wireless telemetry. The circuit consists of 16 amplifiers, an analog time-division multiplexer, a single 8 bit analog-to-digital converter, a ...
Alessandro Sottocornola Spinelli +10 more
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez +12 more
wiley +1 more source