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Free tier or trial period 3DF Zephyr: Proprietary: Microsoft Windows [1] Standalone [1] Yes [1] Yes, multiple images [1] Aerial, close-range, UAS Images, video, laser scan [1] 2013 [citation needed] 3DFLOW [1] Free-US$4,200 [1] No Yes, Free Edition [2] and Free Trial [3] Ames Stereo Pipeline: Apache v2: Linux and OSX: Standalone Yes Yes, can ...
Endobronchial valve. An endobronchial valve (EBV) is a small, one-way valve, which may be implanted in an airway feeding the lung or part of lung. The valve allows air to be breathed out of the section of lung supplied, and prevents air from being breathed in. This leaves the rest of the lung to expand more normally and avoid air-trapping.
Endobronchial valves are medical devices that allow air to exit these sections but not to re-enter. The valves, in effect, cause damaged lung tissue to deflate, thereby reducing the excessive lung volume (hyperinflation) caused by emphysema. Two endobronchial valves have been approved by the FDA for BLVR: Zephyr and Spiration. [citation needed]
Initially released as 3DF Zephyr Pro, a consumer-targeted edition was released shortly, 3DF Zephyr Lite and then a GIS and mapping oriented edition as well, 3DF Zephyr Aerial. In 2017, 3DFLOW also released a free edition, which allows the processing of up to 50 images. Since 5.0 however, the Pro and Aerial edition were discontinued and merged ...
In 2003, Zephyr was founded in New Zealand to help develop remote monitoring technologies to address the needs of coaches and athletes in their training. Zephyr's engineers learned early on that there were particular challenges that such systems faced - many of which were the same as those faced by first responders and military personnel.
A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves.However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar ...
A desmodromic valve is a reciprocating engine poppet valve that is positively closed by a cam and leverage system, rather than by a more conventional spring. The valves in a typical four-stroke engine allow the air/fuel mixture into the cylinder at the beginning of the cycle and exhaust spent gases at the end of the cycle. In a conventional ...
professional: used for full length Hollywood movies; professional (small): mainly used for paid commercials, short films or podcasts/YouTube channels; prosumer: Mainly targeting private use, anything that can do more than just trimming a film;