Third World seeks low frequency broadcasting

Low-Frequency Ultrasonic Communication for Speech Broadcasting in Public Transportation

Speech broadcasting via loudspeakers is widely used in public transportation to send broadcast notifications. However, listeners often fail to catch spoken context from speech broadcasts due to excessive environmental noise. We propose an ultrasonic communication method that can be applied to loudspeakerbased speech broadcasting to cope with this issue. In other words, text notifications are mo...

Effect of Low Frequency Low-Level Infra-Red Diode Laser Therapy on Third Degree Burn Healing in Rats Skin

Purpose: The aim of present investigation was to evaluate low frequency low-level infra red diode laser therapy for a third degree burn healing in rats skin.Materials and Methods: 36 rats were divided into groups one and two. On day zero three third degree burns were made on the dorsum of each rat by steam. In group one ,first burn were exposed to a 80 Hz –pulsed 890 nm infra red diode laser wi...

Effect of Low Frequency Low-Level Infra-Red Diode Laser Therapy on Third Degree Burn Healing in Rats Skin

Purpose: The aim of present investigation was to evaluate low frequency low-level infra red diode laser therapy for a third degree burn healing in rats skin.Materials and Methods: 36 rats were divided into groups one and two. On day zero three third degree burns were made on the dorsum of each rat by steam. In group one ,first burn were exposed to a 80 Hz –pulsed 890 nm infra red diode laser wi...

Public service broadcasting in the digital world

A Third World Perspective