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electrodes supported on a frit, embedded in a Pyrex glass tube and connected by tungsten wires, to a precision RLC bridge [ 24 ]. The catalyst (1.5 cm 3 ) powder (fraction between 0.25 and 0.5 mm) was filling the annular space between the electrodes

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diameter of the tungsten carbide (WC) balls were 200 g and 100 mm, respectively; the grinding bowl was 250 mL WC; the grinding times were 0, 1, and 2 h; the speed of the main disk was 600 rpm; and the grinding process was dry. The X-ray diffraction

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Rare-earth based OLEDs

TG-FTIR thermal stability investigation of tetrakis beta-diketonates complexes

Journal of Thermal Analysis and Calorimetry
Authors: Kelly C. Teixeira, Gabriela F. Moreira, Welber G. Quirino, Cristiano Legnani, Raigna A. Silva, Marco Cremona, Hermi F. Brito, and Carlos A. Achete

deposited by thermal evaporation in tungsten crucibles with a controlled growth rate of about 0.1–0.3 nm s −1 under high vacuum and with a base pressure around 9 × 10 −6 Torr. The photoluminescent spectra of the deposited thin films were recorded at room

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34 ] in water with hydrogen peroxide. When the fresh catalyst was treated with H 2 O 2 , the structure of the catalyst changed into active tungsten-peroxo intermediate. The active intermediate was responsible for the oxidation of alcohols to the

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. 13. MLCP da Silva Miguel , IM GLJP da Silva 2003 Thermal characterization of hydrous tungsten

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. 27. Nguyen , C-A , Shin , H-J , Kim , KT , Han , Y-H , Moon , S . Characterization of uncooled bolometer with vanadium tungsten oxide infrared active layer . Sensor Actuat A-Phys . 2005 ; 123 : 87 – 91 . 10

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using a catalyst comprising a source of chromium, molybdenum or tungsten and a ligand containing at least one phosphorous, arsenic or antimony atom bound to at least one (hetero)hydrocarbyl group: WO, 02/004119 . BP Chemicals Ltd , Saltend

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] heat treatment, treatment of the weld edge by Tungsten Inert Gas (TIG) or plasma arc melting, hammering, shot peening, ultrasonic treatment. 4.1 Welding in an elastically pre-bent state in a clamping device

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-Oran and F. Lezsovits , “ Enhance thermal efficiency of parabolic trough collector using Tungsten oxide/Syltherm 800 nanofluid ,” Pollack Period

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degradation of different dyes in an aqueous solution under visible light irradiation. According to the literature test method [ 3 ], a 300-W tungsten lamp was positioned inside a cylindrical Pyrex vessel surrounded by a circulating cooling water jacket and a

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