Duccio di Buoninsegna (Italian: [ËduttÊo di ËbwÉninËseÉ²É²a]; c. 1255â1260 â c. 1318â1319) was an Italian painter active in Siena, Tuscany, in the late 13th and early 14th centuries. He was hired throughout his life to complete many important works in government and religious buildings around Italy. Duccio is credited with creating the painting styles of Trecento and the Sienese school, and also contributed significantly to the Sienese Gothic style.
Headgear is typically used in growing patients to correct overbites by holding back the growth of the upper jaw, allowing the lower jaw to catch up.
Helmets: a road safety manual 1 | Why are helmets needed? 7 1.2 A helmet protects your head The technical expertise behind the design of high quality helmets is based on an understanding of what happens to the head in the event of a motorcycle crash..2 A helmet protects your head: This section describes what can happen to the head in the event of a motorcycle or bicycle collision. It then goes on to explain the physical components of a helmet and the way in which they reduce the impact of a collision.