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Just like pacemakers, ICDs can have a single wire or lead in the heart (in the right ventricle, single chamber ICD), two leads (in the right atrium and right ventricle, dual chamber ICD) or three leads (biventricular ICD, one in the right atrium, one in the right ventricle and one on the outer wall of the left ventricle).
A coaxial loudspeaker is a loudspeaker system in which the individual driver units radiate sound from the same point or axis. Two general types exist: one is a compact design using two or three speaker drivers, usually in car audio, and the other is a two-way high-power design for professional audio, also known as single-source or dual-concentric loudspeakers. [1]
A speaker enclosure using a passive radiator usually contains an "active loudspeaker" (or main driver), and a passive radiator (also known as a "drone cone"). The active loudspeaker is a normal driver, and the passive radiator is of similar construction, but without a voice coil and magnet assembly.
ZURICH (Reuters) -Israeli attacks on hospitals in Gaza have devastated the Palestinian enclave's health system and raised serious concerns about Israel's compliance with international law, the U.N ...
The NHTSA's Office of Defects Investigation said it had received one complaint alleging a crash when the feature was being used and had reviewed at least three media reports of similar crashes ...
Today the majority of compression drivers, either by inheritance or design, are based on the guidelines outlined by Smith. The suppression technique of Smith has been recently extended [7] using a more accurate analytical acoustical model of the compression driver geometry. From this work improved phase plug design guidelines have been deduced ...
A multiplace chamber is the preferred facility for treatment of decompression sickness as it allows direct physical access to the patient by medical personnel, but monoplace chambers are more widely available and should be used for treatment if a multiplace chamber is not available or transportation would cause significant delay in treatment ...
Raptor 2's main combustion chamber uses an undisclosed ignition method that is allegedly less complex, lighter, cheaper, and more reliable than Merlin's. Engine ignition in Raptor Vacuum is handled by dual-redundant spark-plug lit torch igniters, [ 26 ] which eliminate the need for Merlin's dedicated, consumable igniter fluid. [ 21 ]