Results 111 to 120 of about 18,287 (310)
Directional properties of the loudspeaker systems with analog and digital crossover networks
Archives of Acoustics, 2008 Directional properties of loudspeaker systems with analog and digital crossover networks have been investigated. The study has been performed for a three-way loudspeaker system subjectively classified as of average quality.
Marek NIEWIAROWICZ, Henryk ŁOPACZ
doaj
ANALYSIS OF ACTIVE PHASED ANTENNA ARRAY PARAMETERS FOR THE GURT RADIO TELESCOPE
Radio Physics and Radio Astronomy, 2015 The calculation technique results of numerical analysis of parameters of active phased antenna array (APAA) of the Giant Ukrainian Radio Telescope (GURT) of decameter and meter wavelengths which is being built now nearby Kharkiv at the area of S.
P. L. Tokarsky +2 more
doaj +1 more source
A Systematic Review and Meta‐Analysis of the Recurrence of Autoimmune Encephalitis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Autoimmune encephalitis (AE) is a disease with a potential for recurrence, and patients receive immunotherapy to prevent it. However, there is no consensus on the duration of immunotherapy. This study aimed to determine the recurrence rate and identify the risk factors for AE to provide guidance on the duration of immunotherapy ...
Shangkai Bai +5 more
wiley +1 more source
Directivity of underwater horns [PDF]
, 1969 The literature on acoustical horns is surveyed. An experimental study of the directivity gain of underwater transducers with the attachment of horns is described.
Ripper Neto, Arthur Palmeira
core
Improved SH0 Guided Wave Transducers Based on Piezoelectric Fiber Patches
Sensors, 2019 A piezoelectric fiber patch (PFP) is a transducer type that is suitable for guided-wave-based structural health monitoring (SHM) due to its light, thin, and flexible characteristics.
Yongtak Kim, Tobias Gaul, Bernd Köhler
doaj +1 more source
A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling +16 more
wiley +1 more source
NIST System for Measuring the Directivity Index of Hearing Aids under Simulated Real-Ear Conditions [PDF]
, 2013 The directivity index is a parameter that is commonly used to characterize the performance of directional hearing aids, and is determined from the measured directional response.
Wagner, Randall P.
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background X‐linked adrenoleukodystrophy (X‐ALD) is a neurometabolic disorder caused by pathogenic variants in ABCD1, leading to slowly progressive spinal cord disease in nearly all affected men. Sensitive biomarkers to quantify disease severity and predict progression are needed for clinical care and trial design.
Eda G. Kabak +4 more
wiley +1 more source
Archives of AcousticsIn this paper, the potential use of parametric array loudspeakers (PALs) in acoustic measurements of the room is analysed, especially in the assessment of the effectiveness of reflective panels and intentionally angled surfaces.
Filip WĘGRZYN, Adam PILCH
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng +4 more
wiley +1 more source