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Control of molecular architecture by use of the appropriate ligand isomer: a mononuclear “corner-type” versus a tetranuclear [2 × 2] grid-type cobalt( iii ) complex

Julia Hausmann、Sally Brooker2004-01-01Chemical Communications

Employing two isomeric pyrazine-based ligands a [2 x 2] grid-type tetranuclear cobalt(III) complex, incorporating doubly deprotonated (La)2- ligands, and a "corner-type" mononuclear cobalt(III) complex, incorporating neutral H2Lp ligands in a zwitterionic form, have been synthesised and structurally characterised.

Metal complexes synthesis and propertiesSupramolecular Chemistry and ComplexesMagnetism in coordination complexes

Transient Fuel Behavior and Failure Condition in the CABRI-2 Experiments

Ikken Sato、F. Lemoine、D. Struwe2004-01-01Nuclear Technology

In the CABRI-2 program, 12 tests were performed under various transient conditions covering a wide range of accident scenarios using two types of preirradiated fast breeder reactor (FBR) fuel pins with different smear densities and burnups. For each fuel, a nonfailure-transient test was performed, and it provided basi…

Nuclear reactor physics and engineeringNuclear Materials and PropertiesNuclear and radioactivity studies

Het-PDB Navi.: A Database for Protein-Small Molecule Interactions

Akihiro Yamaguchi2004-01-01The Journal of Biochemistry

The genomes of more than 100 species have been sequenced, and the biological functions of encoded proteins are now actively being researched. Protein function is based on interactions between proteins and other molecules. One approach to assuming protein function based on genomic sequence is to predict interactions be…

Protein Structure and DynamicsEnzyme Structure and FunctionAmino Acid Enzymes and Metabolism

Structural study of metallomesogens derived from tris-[2-(salicylideneamino)ethyl]amine. A molecular meccano

Mercedes Marcos、Ana Omenat、Joaquín Barberá 等 5 位作者2004-01-01Journal of Materials Chemistry

The synthesis of new metal complexes based on imines derived from tris-(2-aminoethyl)amine (TREN) which exhibit different geometries depending on the metal [Cu(II), VO(IV), Pd(II), Ni(II), Ln(III)] has been carried out. TREN has three coordination positions which allow us to obtain different coordination complexes inv…

Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes

Preparation of tripyrrane analogues from resorcinol and 2-methylresorcinol for applications in the synthesis of new benziporphyrin systems

Kae Miyake、Timothy D. Lash2004-01-01Chemical Communications

Acid catalyzed condensation of resorcinol or 2-methylresorcinol with 2 equiv. of an acetoxymethylpyrrole gave bis(pyrrolylmethyl)benzene derivatives in moderate yields; these afforded a series of novel aromatic benziporphyrins using the MacDonald "3 + 1" methodology.

Molecular Sensors and Ion DetectionPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms

A kinetic study of the early steps in the oxidation of chlorophenols by hydrogen peroxide catalyzed by a water-soluble iron(iii) porphyrinElectronic supplementary information (ESI) available: figures providing additional data on the catalytic oxidation of TCP, as well as the calibration curve for the chloride ion selective electrode. See http://www.rsc.org/suppdata/nj/b4/b400482e/

G�bor Lente、James H. Espenson2004-01-01New Journal of Chemistry

The kinetics and mechanism of the initial steps in the oxidation of 2,4,6-trichlorophenol by hydrogen peroxide using iron(III) meso-tetra(4-sulfonatophenyl)porphine chloride as a catalyst were studied in this work. The first oxidation step is the formation of a substituted 1,4-benzoquinone. This step was also studied…

Advanced oxidation water treatmentPorphyrin and Phthalocyanine ChemistryElectrochemical Analysis and Applications

Characterization of Amphotericin B Liposome Formulations

Aranya Manosroi、Lalana Kongkaneramit、Jiradej Manosroi2004-01-01Drug Development and Industrial Pharmacy

Liposomes composed of hydrogenated soya phosphatidylcholine (Emulmetik 950)/cholesterol/charged lipids [dicetyl phosphate (-) or stearylamine (+)] were developed. The hydrogenated soya phosphatidylcholine/cholesterol/charged lipid liposomes at molar ratios of 1:1:0, 7:2:0, 7:2:1 (-), and 7:2:1 (+), with and without th…

Nanoparticle-Based Drug DeliveryLipid Membrane Structure and BehaviorAdvancements in Transdermal Drug Delivery

Plasma synthesis of carbon magnetic nanoparticles and immobilization of doxorubicin for targeted drug delivery

Yonghui Ma、Sorin Manolache、Ferencz S. Denes 等 6 位作者2004-01-01Journal of Biomaterials Science Polymer Edition

Using dense medium plasma technology, carbon magnetic nanoparticles (CMNP) were synthesized at room temperature and atmospheric pressure. Based on results from X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy, we conclude that these nanoparticles are composed o…

Carbon Nanotubes in CompositesGraphene research and applicationsGraphene and Nanomaterials Applications

Bagging in Textiles

Nefise Gönül Şengöz2004-01-01Textile Progress

Bagging is a three-dimensional residual deformation, seen in used garments, which causes a deterioration in the appearance of the garment. The places it is seen during wear are elbows, knees, pockets, hips, and heels. The common factor in all of these parts of garments is the force exerted on that area of the fabric f…

3D Shape Modeling and AnalysisAdditive Manufacturing and 3D Printing TechnologiesTextile materials and evaluations

Enhanced Dielectric Response of Liquid Crystal Ferroelectric Suspension

Oleksandr Buchnev、E. Ouskova、Yu. Reznikov 等 6 位作者2004-01-01Molecular Crystals and Liquid Crystals

It was found that doping of tiny ferroelectric particles to a nematic liquid crystal(LC)strongly affects dielectric properties of the system. The doping increases dielectric response of the LC due to interaction between LC molecules and particles, which possess large dipole moment and high polarisability. The suspensi…

Liquid Crystal Research AdvancementsMaterial Dynamics and PropertiesNonlinear Dynamics and Pattern Formation

Syntheses, structures and magnetic properties of Mn( ii ) dimers [CpMn(μ-X)] 2 (Cp = C 5 H 5 ; X = RNH, R 1 R 2 N, CCR)

C.S. Alvarez、Sally R. Boss、J. Burley 等 11 位作者2004-01-01Dalton Transactions

Manganocene, Cp(2)Mn, has been employed as a precursor in the synthesis of a range of Mn(II) dimers of the type [CpMn(micro-X)](2)[X = 8-NHC(9)H(6)N (1), N(Ph)(C(5)H(4)N)(2), N(4-EtC(6)H(4))(C(5)H(4)N)(3) and C[triple bond]CPh (4)] as well as the bis-adduct [Cp(2)Mn[HN=C(NMe(2))(2)](2)](5). The solid-state structures…

Organometallic Complex Synthesis and CatalysisMagnetism in coordination complexesOrganic and Molecular Conductors Research

Non-template hydrothermal route derived mesoporous Ce0.2Zr0.8O2nanosized powders with blue-shifted UV absorption and high CO conversion activity

Rui Si、Ya‐Wen Zhang、Chaoxian Xiao 等 7 位作者2004-01-01Physical Chemistry Chemical Physics

Mesoporous Ce0.2Zr0.8O2 nanosized powders were synthesized via a hydrothermal method in the presence of urea without any templates using a trivalent cerium salt as the starting material. The analyses by medium-angle powder X-ray diffraction (PXRD) and vis-Raman spectroscopy showed that the Ce0.2Zr0.8O2 powders were so…

Catalytic Processes in Materials ScienceMesoporous Materials and CatalysisCatalysis and Oxidation Reactions

Effect of Co 2+ ion on the magnetic properties of sol–gel cobalt ferrite thin films

Nimai Ch. Pramanik、Tatsuo Fujii、Makoto Nakanishi 等 4 位作者2004-01-01Journal of Materials Chemistry

The effect of Co2+ ion on the magnetic properties of the sol–gel derived cobalt ferrite thin films (400 nm thickness) was studied. Films with different solution composition ([Co2+]/[Fe3+] = 0.5–1.0) were deposited on a Si substrate from the precursor containing an aqueous solution of FeCl3·6H2O and CoCl2·6H2O. Deposit…

Magnetic properties of thin filmsMagnetic Properties and Synthesis of FerritesIron oxide chemistry and applications

The physico-chemistry of biofilm-mediated pitting corrosion of copper pipe supplying potable water

C. W. Keevil2004-01-01Water Science & Technology

Copper is a generally robust material that has beneficial properties to reduce biofilm formation and pathogen colonisation of pipes supplying potable water. However, a rare pitting corrosion can occur in soft, poorly buffered waters that can lead to pipe failure. This has been shown to be mediated by a copper-tolerant…

Corrosion Behavior and InhibitionBacterial biofilms and quorum sensingWater Treatment and Disinfection

Stress Relaxation Behavior of Banana Fiber-Reinforced Polyester Composites

Laly A. Pothan、N. R. Neelakantan、B. N. SATYANARAYANA RAO 等 4 位作者2004-01-01Journal of Reinforced Plastics and Composites

Stress relaxation behavior of banana fiber-reinforced polyester composites were investigated with special reference to the effect of fiber loading, fiber treatment, hybridization with glass fiber and also as woven fabric composites. It was observed that incorporation of fiber in the polyester matrix reduces the rate o…

Mechanical Behavior of CompositesStructural Behavior of Reinforced ConcreteNatural Fiber Reinforced Composites

Gas-driven Deuterium Permeation through Al2O3 Coated Samples

Denis Levchuk、F. Koch、H. Maier 等 4 位作者2004-01-01Physica Scripta

In this paper, data on the performance of thin alumina layers as hydrogen barriers are presented for coatings deposited on Pd–Ag substrate at temperatures of 600, 873 and 1000 K with a filtered arc technique. The permeation reduction factor ranged from 10 to 100 depending on the structure of the deposited layer. Recom…

Fusion materials and technologiesHigh-Temperature Coating BehaviorsNuclear Materials and Properties

Mechanism of low temperature selective catalytic reduction of NO with NH 3 over carbon-supported Mn 3 O 4 : Active phase and role of surface NO species

Gregorio Marbán、Teresa Valdés-Solı́s、Antonio B. Fuertes2004-01-01Physical Chemistry Chemical Physics

In this work, the interactions at low temperature (125 °C) of gaseous NH3, NO and O2 with carbon-supported manganese oxide catalysts have been extensively studied, mainly via step–response experiments, with the objective of explaining the low-temperature mechanism of the SCR reaction on such catalysts. To achieve this…

Catalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsAmmonia Synthesis and Nitrogen Reduction

Tritium Removal from Carbon Plasma Facing Components

C.H. Skinner、J.P. Coad、G. Federici2004-01-01Physica Scripta

Tritium removal is a major unsolved development task for next-step devices with carbon plasma facing components. The 2–3 order of magnitude increase in duty cycle and associated tritium accumulation rate in a next-step tokamak will place unprecedented demands on tritium removal technology. The associated technical ris…

Diamond and Carbon-based Materials ResearchFusion materials and technologiesNuclear Materials and Properties

High-Temperature Protonic Conduction in LaP[sub 3]O[sub 9]

Koji Amezawa、Yukinori Kitajima、Yoichi Tomii 等 4 位作者2004-01-01Electrochemical and Solid-State Letters

A novel proton-conducting material based on was developed and its electrical conduction properties were investigated by measuring conductivities under 0.4-5 kPa of and 0.01-100 kPa of at 573-973 K. conducted protons dominantly by partial substitution of Sr for La. Conductivities of the 1 mol % Sr-doped were to S cm −1…

Advanced Battery Materials and TechnologiesAdvancements in Solid Oxide Fuel CellsFuel Cells and Related Materials

High benzene selectivity of uniform sub-nanometre pores of self-ordered mesoporous silicate

Yuko Ueno、Akiyuki Tate、Osamu Niwa 等 6 位作者2004-01-01Chemical Communications

The high benzene gas selectivity of mesoporous silicate (SBA-15) was observed in the sub-nanometre micropore condensation region. The benzene/toluene ratios of the adsorbed amount were >100 and >6 in ideal and pseudo-atmospheric environments, respectively.

Catalytic Processes in Materials ScienceZeolite Catalysis and SynthesisMesoporous Materials and Catalysis