Photocatalytic Activity of S-doped TiO2 Photocatalyst under Visible Light

In order to effectively utilize visible light in photocatalytic reactions, we have developed S-doped TiO2 particles. They show strong absorption for visible light and high activities for degradation of methylene blue in aqueous solution under irradiation at wavelengths longer than 440 nm. The oxidation state of the S atoms incorporated into the TiO2 particles is determined to be S6+ from the XPS spectra

Development of the Computer System on Soil Analysis for the Field Management of Paddy Farm

Orientador: Emygdio Leite de Araujo Monteiro FilhoMonografia (Bacharelado) - Universidade Federal do Paraná. Setor de Ciências Biológicas. Curso de Graduação em Ciências Biológica

Light-Induced N₂O Production from a Non-Heme Iron–Nitrosyl Dimer

Two non-heme iron–nitrosyl species, [Fe₂(N-Et-HPTB)(O₂CPh)(NO)₂](BF4)₂(1a) and [Fe₂(N-Et-HPTB)(DMF)₂(NO)(OH)](BF₄)₃ (2a), are characterized by FTIR and resonance Raman spectroscopy. Binding of NO is reversible in both complexes, which are prone to NO photolysis under visible light illumination. Photoproduction of N₂O occurs in high yield for 1a but not 2a. Low-temperature FTIR photolysis experiments with 1a in acetonitrile do not reveal any intermediate species, but in THF at room temperature, a new {FeNO}⁷ species quickly forms under illumination and exhibits a ν(NO) vibration indicative of nitroxyl-like character. This metastable species reacts further under illumination to produce N₂O. A reaction mechanism is proposed, and implications for NO reduction in flavodiiron proteins are discussed.National Institutes of Health (U.S.) (GM074785)National Institutes of Health (U.S.) (GM032134

Propagation loss of amorphous silicon optical waveguides at the 0.8 ﾎｼm-wavelength range

金沢大学理工研究域電子情報学系We fabricated optical waveguides using amorphous silicon deposited by catalytic chemical vapor deposition method. The waveguides were fabricated by photolithography and wet chemical etching. The propagation loss of 15 dB/cm at 830 nm was measured. ©2010 IEEE

Buffer Construction Methodology in Demonstration Test For Cavern Type Disposal Facility -9182

ABSTRACT A number of studies concerning a cavern type disposal facility have been carried out for disposal of low level radioactive waste mainly generated by power plant decommissioning in Japan 1) . The disposal facility is composed of an engineered barrier system with concrete pit and bentonite buffer, and planed to be constructed in sub-surface 50 -100 meters depth. Though the previous studies have mainly used laboratory and mock-up tests, we conducted a demonstration test in a full-size cavern. The main objectives of the test were to study the construction methodology and to confirm the quality of the engineered barrier system. The demonstration test was planned as the construction of full scale mock-up. It was focused on a buffer construction test to evaluate the construction methodology and quality control in this paper. Bentonite material was compacted to 1.6 Mg/m 3 in-site by large vibrating roller in this test. Through the construction of the buffer part, a 1.6 Mg/m 3 of the density was accomplished, and the data of workability and quality is collected