'25 db' diaporamas de présentation

DUNE CUC and Fibre Run

DUNE CUC and Fibre Run. Tim Durkin STFC 25/01/2019. Initial Task list. List received from Terri. I have attempted to group these items where they have common dependency or associated relationships.

453 views • 45 slides

Altimetric rain detection: Past, Present and Future

Altimetric rain detection: Past, Present and Future. Graham Quartly & Trevor Guymer. Seasat. Ex. 3. AGC (dB). Ex. 5. AGC (dB). Hs (m). Srokosz & Guymer (1988). ERS-1. Mechanisms for s 0 change: reflection from rain clouds change in surface roughness attenuation by rain.

324 views • 23 slides

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TG3a-Wisair contribution on multi band implementation] Date Submitted: [5 May, 2003] Source: [Gadi Shor] Company: [Wisair]

160 views • 16 slides

What does the Acoustic Reflectance tell us about the middle ear? MEMRO 2009

What does the Acoustic Reflectance tell us about the middle ear? MEMRO 2009. Patricia Jeng, Pierre Parent, Jont Allen, Mimosa Acoustics Harry Levitt, Advanced Hearing. Goals. Acoustic power measurements quantify wide band complex: Reflectance Transmittance Immittance.

118 views • 11 slides

DMI DIAMOND Micro Interface

256 views • 9 slides

S-Pol center fed antenna

S-Pol center fed antenna. Dual Offset-Feed Gregorian Antenna System. Operational March 2008. -38 cross-pol; -40 db in practice. First sidelobe is 31 db down. Gain. First side lobe is 25 db down. 31 db down for new antenna. Cross-pole about -35 db.

214 views • 5 slides

Signs and Symptoms of noise-induced hearing loss

Noise levels are measured in decibel, dB, with the lowest audible sound measured at 0 and the loudest sound possible reaching 194dB. The scale is logarithmic. An increase by 10 dB indicates a multiple increase in sound intensity or power. A level of a normal conversation is about 65 dB. In most countries, a sustained noise level of 85 dB over eight hours a day in, for example, your workplace is considered the upper safe noise limit in most countries. In the US, however, the Occupational Safety and Health Administration, OSHA, still operates on the basis of a safe upper noise-induced hearing loss level signi􀂡cantly higher at 90dB.

70 views • 3 slides