Photochemical preparation of pyrrole ring-contracted chlorins by the Wolff rearrangement
Photolysis of the Ni(II), Cu(II), and Zn(II) 2-diazo-3-oxochlorins generates 4-membered rings containing azeteoporphyrins.
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Pyrene-sensitized electron transport across vesicle bilayers: dependence of transport efficiency on pyrene substituents
Endoergic electron transport across vesicle bilayers from ascorbate (Asc-) in the inner waterpool to methylviologen (MV2+) in the outer aqueous solution was driven by the irradiation of pyrene derivatives embedded in the vesicle bilayers. The initial rate of MV2+ reduction is dependent on the substituent group of the…
Dielectric Properties of Poly- and Single-Crystalline BaTi<SUB>2</SUB>O<SUB>5</SUB>
Non-oriented and (010) oriented poly-crystalline BaTi2O5 (BT2) was prepared by hot-pressing and arc-melting, respectively. The dielectric properties of poly-crystalline BT2 were compared with those of single-crystalline BT2 prepared by a floating zone method. The maximum permittivity of (010) oriented poly-crystalline…
Molecular Assembly Engineering of Self-Doped Polyaniline Film for Application in Electrochromic Devices
Self-doped polyaniline (SPANI) films were prepared by using a self-assembly process consisting of a self-doping monomer ( o -aminobenzenesulfonic acid, SAN) and aniline (AN). SAN-AN copolymerization and film formation were simultaneously performed in an aqueous solution. An immersing self-assembly method was developed…
Control of optically active structure of thioether‐phthalocyanine aggregates by chiral Pd(II)‐BINAP complexes in toluene and at the toluene/water interface
The Pd(II)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (BINAP)-mediated chiral assembly of thioether-derivatised phthalocyanatomagnesium(II) compounds (MgPc(SR)8, SR is benzylthio (SBz) or benzhydrylthio (Bh)) was formed in toluene and at the toluene/water interface, and investigated by means of UV-Vis absorption and…
Investigation of the phase diagrams of chiral praziquantel
In the present work, thermal properties of praziquantel, including melting point phase diagram and solubility, were determined for the purpose of exploration on an integrated enantioseparation process of chromatography and crystallization. The solubility of racemic praziquantel in methanol and 2-propanol was measured…
AGRONOMIC IMPLICATIONS OF THE SUPPLY OF LIME AND GYPSUM BY-PRODUCTS TO PALEXERULTS FROM WESTERN SPAIN
A laboratory experiment with leaching columns reproducing the topmost portion (Ap and AB horizons) of a Palexerult from western Spain was conducted to compare the efficiency of limestone (L), gypsum (G), and various lime and gypsum by-products (sugar foam waste, phosphogypsum [PG], and red gypsum [RG]) to alleviate Al…
Computational Prediction of Functionally Important Regions in Proteins
Current projects for the massive characterization of proteomes are generating protein sequences and, to less extent, three dimensional structures with unknown function. Experimentally determining functional features of a protein is expensive, time consuming and difficult to automate. There is therefore a demand for co…
Tracing locations of new coating material during spark anodizing of titanium
The growth of anodic coatings on titanium, under sparking conditions, is investigated in tracer experiments, using alkaline silicate and phosphate electrolytes. Coatings are formed sequentially in each electrolyte, with phosphorus and silicon located by energy-dispersive X-ray analysis and glow discharge optical emiss…
Light-Activated Indole-3-Acetic Acid Induces Apoptosis in G361 Human Melanoma Cells
Indole-3-acetic acid (IAA) activation by horseradish peroxidase (HRP) has been suggested as a new cancer therapy. Interestingly, we found that ultraviolet B UVB radiation also can activate IAA and produce free radicals in a dose-dependent manner. In this study, we attempted to identify the free radicals generated by U…
Hydrogen Embrittlement Properties of Stainless Steels in High Pressure Gaseous Hydrogen Environment
燃料電池の実用化に向けての水素の輸送・貯蔵方法の一つとして高圧水素ガスを用いる方法が挙げられる. 本研究では, 高圧水素ガスシステムで使用される材料の安全性評価を目的として, アルミニウム合金およびオーステナイト系ステンレス鋼の機械的性質を45MPaの高圧水素ガス中の低ひずみ速度引張試験 (SSRT, Slow Strain Rate Testing) により調査した. アルミニウム合金A6061-T6および安定化オーステナイト系ステンレス鋼である316L鋼は低ひずみ速度条件下 (3×10-7～3×10-6s-1) でも脆化を示さなかった. 一方, 準安定オーステナイト系ステンレス鋼である304L鋼は, ひずみ誘起マルテンサイト相…
Electronic properties and reactivity of Pt-doped carbon nanotubes
The structures of the (5,5) single-walled carbon nanotube (SWCNT) segments with hemispheric carbon cages capped at the ends (SWCNT rod) and the Pt-doped SWCNT rods have been studied within density functional theory. Our theoretical studies find that the hemispheric cages introduce localized states on the caps. The cap…
Alternative fluoride scavengers to produce TiO 2 films by the liquid phase deposition (LPD) technique
TiO2 films have been deposited on bare glass and on glass coated with indium tin oxide (ITO) by the liquid phase deposition (LPD) method, using Al(III) nitrate and Fe(III) chloride as alternative fluoride scavengers. Films were characterized by grazing angle X-ray diffraction, scanning electron microscopy, UV-vis spec…
Transmission Light Microscopy of Carbon Nanotubes-Epoxy Nanocomposites Involving Different Dispersion Methods
Before employing carbon nanotubes (CNTs) in a polymer matrix as potential reinforcement elements, major obstacles, like inhomogeneous distribution and formation of agglomerates, need to be removed. Transmission Light Microscopy is a very quick, cheap and useful tool for roughly quantifying such problems. In this paper…
Transport Properties of Potassium-Doped BaZrO[sub 3] in Oxygen- and Water-Vapor-Containing Atmospheres
The effect of doping potassium on the A-site of for application as a high-temperature proton conductor was investigated. The synthesis of K-doped and its characterization by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis is described. Potassium-doped material was stable at high w…
Dithiaethyneazuliporphyrin - a contracted heterocarbaporphyrin
Dithiaethyneazuliporphyrin, the first contracted carbaporphyrinoid, has been synthesized; the molecule contains an azulene moiety embedded in the [18]dithiacarbatriphyrin(4.1.1) macrocyclic framework.
An Electrochemical Method to Assess the Chromium Volatility of Chromia-Forming Metallic Interconnect for SOFCs
The polarization behavior of ( La 0.8 Sr 0.2 ) 0.9 Mn O 3 (LSM) electrodes in contact with different chromia-forming alloys including a Ni–Cr-based superalloy (R600), and ferritic stainless steels (RA446 and Crofer22 APU) was studied under solid oxide fuel cell (SOFC) operating conditions. The magnitude of the polariz…
Treatment of mice with stem bark extract ofAphanamixis polystachyareduces radiation-induced chromosome damage
PURPOSE: Normal tissue radiosensitivity is the major limiting factor in radiotherapy of cancer. The use of phytochemicals may reduce the adverse effects of radiation in normal tissue. The effect of ethyl acetate fraction of Aphanamixis polystachya (EAP) was investigated on the radiation-induced chromosome damage in th…
The kinetics of the α → β transition in synthetic nickel monosulfide
The kinetic behavior of the α-Ni 1-x S → β-NiS transition was investigated via a series of annealquench experiments using Rietveld quantitative phase analysis of powder X-ray diffraction data. Initial compositions of α-Ni 1-x S were found to play an important role in the kinetics of the transition. The activation ener…
Ferro- and antiferromagnetic interactions in face-sharing trioctahedral Ni II Mn II Ni II and Ni II Fe III Ni II complexes with the same 1–5/2–1 spin system
Two heterotrinuclear complexes, [Mn(II)(Ni(II)L)2].2CH3OH (where H3L = 1,1,1-tris(N-salicylideneaminomethyl)ethane) and [Fe(III)(Ni(II)L)2]NO3.C2H5OH, consisting of three face-sharing octahedra have been prepared; although these complexes have closely related structures and have the same 1-5/2-1 spin system, they show…