This research, was designed to determine the opinions of individuals who use bicycles for recreational purposes; about reasons cycling, benefits using individuals, difficulties they encountered while and what should be done promote bicycles. In study, interwoven single state pattern qualitative research method used data were collected from 13 participants purposes in Arhavi district Artvin, int...

One hundred children presented over 40 days with BMX bike injuries, 40 of which had been sustained while trying to perform stunts. Injuries in this series were compared with previously reported injuries from accidents on ordinary bicycles. BMX bike injuries differed little from ordinary bike injuries except in the greater proportion of injuries due to stunts and the smaller incidence of head in...

[reaction: see text] Through a unified synthetic strategy, appropriately functionalized bicyclic starting materials can be elaborated via Ni(II)/Cr(II) macrocylization to [9.3.1] bicycles. Elaboration of these core structures allows access to phomactin C/D analogues and establishes the first synthetic approach to phomactin A affording an intact octahydrochromene/macrocyclic ring system.

Millions of people travel every day by car in cities around the world, with daily mobility being one main contributors to CO2 emissions. Bicycle-sharing systems are a alternative cars that may help reduce and GHG We analyze public bike-sharing service (BIZI, Zaragoza, Spain, May 2008–August 2019, 24 million uses), from perspective both efficiency demand profiles, determine whether use bicycles ...