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Physically based rendering (PBR) is a computer graphics approach that seeks to render images in a way that models the lights and surfaces with optics in the real world. It is often referred to as "Physically Based Lighting" or "Physically Based Shading".
PK 11195 is an isoquinoline carboxamide which binds selectively to the peripheral benzodiazepine receptor (PBR) (also known as the mitochondrial 18 kDa translocator protein or TSPO). It is one of the most commonly used PBR ligands due to its high affinity for the PBR in all species, [ 1 ] although it is starting to be replaced by newer and more ...
Petrobras (NYSE stock ticker code PBR), Brazilian oil company; Payment by Results; Pre-Budget Report, one of the two economic forecasts that HM Treasury is required to deliver to the UK Parliament each year; Performance-based regulation of utilities; Plant breeders' rights over new varieties
PBr 3 is prepared by treating red phosphorus with bromine. An excess of phosphorus is used in order to prevent formation of PBr 5: [1] [2] P 4 + 6 Br 2 → 4 PBr 3. Because the reaction is highly exothermic, it is often conducted in the presence of a diluent such as PBr 3. Phosphorus tribromide is also generated in situ from red phosphorus and ...
Phosphorus pentabromide is a reactive, yellow solid of formula P Br 5, which has the structure [PBr 4] + Br − (tetrabromophosphonium bromide) in the solid state but in the vapor phase is completely dissociated to PBr 3 and Br 2.
Phosphorus heptabromide is an inorganic compound with the chemical formula P Br 7.It is one of the phosphorus bromides.At normal conditions, it forms red prismatic crystals. PBr 7 can be prepared by the sublimation of a mixture of phosphorus pentabromide and bromine.
Phosphoryl bromide is prepared by the reaction between phosphorus pentabromide and phosphorus pentoxide: [4] [5]. 3 PBr 5 + P 2 O 5 → 5 POBr 3. It can also be prepared via the slow addition of liquid bromine to phosphorus tribromide at 0 °C, followed by the slow addition of water and vacuum distillation of the resulting slurry.
1,3-Butadiene is an organic compound that is a simple conjugated diene hydrocarbon (dienes have two carbon-carbon double bonds).Polybutadiene forms by linking many 1,3-butadiene monomers to make a much longer polymer chain molecule.