Oil paint very slowly, darken, and crack, unlike mastic and wax (the latter of which was used in encaustic painting). Greek writers such as Aetius Amidenus recorded recipes involving the use of oils for drying, such as walnut, poppy, hempseed, pine nut, castor, and linseed. When thickened, the oils became resinous and could be used as varnish to seal and protect paintings from water. Additionally, when yellow pigment was added to oil, it could be spread over tin foil as a less expensive alternative to gold leaf. Early Christian monks maintained these records and used the techniques in their own artworks. Theophilus
Unimar Marmara Ereğlisi Power Plant The plant is owned by the Turkish private power producer Uni-Mar Co., which is co-owned by the Japanese Marubeni and the Belgian Unit International. The British energy company National Power is in charge of operation of the power plant. The plant features advanced combined cycle technology with two 160-MW gas turbines and one steam turbine. Natural gas fired in the power plant is obtained from the state-owned crude oil and natural gas pipelines and trading company BOTAŞ Petroleum Pipeline Corporation (BOTAS), which operates the neighboring LNG storage facility. Generated electrical energy is sold to the state-owned electric utility TETAŞ. Unimar