F. Cariati、Franca Morazzoni、M. Zocchi1978-01-01Journal of the Chemical Society Dalton Transactions
A comparison between the vibrational properties and stereochemistry of [Co(pc)(4Me-py)2] and [Fe(pc)-(4Me-py)2][pc = phthalocyaninato(2 –), 4Me-py = 4-methylpyridine] is carried out by using far-i.r. spectroscopy and X-ray diffractometry. The crystals of the two complexes, based on the packing of [M(pc)(4Me-py)2] addu…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
J. B. DAVISON、Kenneth J. Wynne1978-01-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilicon Phthalocyanine-Siloxane Polymers: Synthesis and 1H Nuclear Magnetic Resonance StudyJohn B. Davison and Kenneth J. WynneCite this: Macromolecules 1978, 11, 1, 186–191Publication Date (Print):January 1, 1978Publication History Published online1 May 2002Published inissu…
Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistrySilicone and Siloxane Chemistry
Jean‐Pierre Desvergne、Henri Bouas‐Laurent1978-01-01Journal of the Chemical Society Chemical Communications
The first photochemically generated, ‘cation-locked’ crown-ether is reported.
Photochromic and Fluorescence ChemistryPhotopolymerization techniques and applicationsSynthesis of Organic Compounds
Ludwig Merz、W. Haase1978-01-01Journal of the Chemical Society Dalton Transactions
The crystal and molecular structure of the title complex has been determined from single-crystal X-ray diffraction data and refined to R 0.068 for 1 423 independent reflections. Four oxygen-bridged cubane-type molecules with a Cu4O4 core, having crystallographically imposed S4 point symmetry, occupy a tetragonal unit…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Svein Espevik1978-01-01Acta Odontologica Scandinavica
Corrosion of base metal alloys was studied by placing the alloys in artificial saliva for 2 months and then determining the concentration of metal ions in the saliva. The distribution of the attack on the surface was examined. The results indicated that the amount of metal ions in the artificial saliva could be relate…
Corrosion Behavior and Inhibition
M. M. Crutchfield1978-01-01Journal of the American Oil Chemists Society
Abstract Continuing pressures to reduce phosphates in wastewaters have sustained an intensive worldwide search to develop acceptable substitutes. Organic polycarboxylate salts have been most extensively investigated because there are a large number of structural possibilities, and the possibility for biodegradation to…
biodegradable polymer synthesis and propertiesPolyoxometalates: Synthesis and ApplicationsPhosphorus and nutrient management
Rüdiger Cerff1978-01-01European Journal of Biochemistry
Partially purified glyceraldehyde‐3‐phosphate dehydrogenase (NADP) (EC 1.2.1.13) from Sinapis alba seedlings was filtered on Sephadex G‐200 in the presence of NADP(H) and NAD(H). With NADP(H) the enzyme elutes as a dissociated species ( M r ∼ 170 000), whereas with NAD(H) it travels as an aggregate in the void volume…
Enzyme Structure and FunctionPolyamine Metabolism and ApplicationsGABA and Rice Research
George F. Fanta、Robert C. Burr、W. M. Doane 等 4 位作者1978-01-01Starch - Stärke
Abstract Polyacrylonitrile (PAN)‐containing graft copolymers of corn starch were prepared from monomer mixtures and then saponified, and dried. Incorporation of selected comonomers lead to shorter saponification times and higher yields of adsorbent products. Substitution of flour for starch gave products which had a h…
Natural Fiber Reinforced Compositesbiodegradable polymer synthesis and propertiesPolymer-Based Agricultural Enhancements
Michael Veith1978-01-01Zeitschrift für Naturforschung B
Abstract 1,3-Diorganyl-2,2-dimethyl-I,3,2,4λ 2 -diazasilastannetidines can be prepared as monomers (organyl = tert-butyl) or dimers (organyl = isopropyl) in nonpolar solvents, depending on the organic nitrogen substituent. The formation of the dimer, which is due to an intermolecular Lewis-acid-base interaction of Sn(…
Synthesis and characterization of novel inorganic/organometallic compoundsChemical Synthesis and ReactionsSilicone and Siloxane Chemistry
P. Kassenbeck1978-01-01Starch - Stärke
Abstract Bei der mit Thiosemicarbazid umgesetzten Dialdehydstärke tritt ein gleichzeitiger Fixier‐ und Kontrastiereffekt erst bei der nachträglichen Behandlung mit Silbernitrat auf. Die Fixierung wird auf die durch freiwerdende Protonen begünstigte Bildung interchenarer Acetalbrücken zurückgeführt, die vornehmlich in…
Molecular Sensors and Ion DetectionMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications
R. Janssen–van Rosmalen、W. H. van der Linden、E. Dobbinga 等 4 位作者1978-01-01Kristall und Technik
Abstract The influence of the hydrodynamic environment on the growth phenomena of large potassium dihydrogen phosphate (KDP) crystals has been investigated in a three vessel system. Special attention was paid to the onset of inclusion formation. Flow visualization experiments carried out in a wind tunnel showed that t…
Minerals Flotation and Separation TechniquesPetroleum Processing and AnalysisCrystallization and Solubility Studies
G.E. Thompson、R. C. Furneaux、J. S. Goode 等 4 位作者1978-01-01Transactions of the IMF
SummaryThe initial film growth and pore development sequences during the anodizing of aluminium substrates at constant current density in phosphoric acid have been observed by transmission electron microscopy of stripped anodic films and ultramicrotomed sections. Initial film growth proceeds by immediate film thickeni…
Corrosion Behavior and InhibitionConcrete Corrosion and DurabilityAnodic Oxide Films and Nanostructures
Thomas A. Early、J. Olmsted、David R. Kearns 等 4 位作者1978-01-01Nucleic Acids Research
High resolution nuclear magnetic resonance (NMR) and ethidium bromide binding studies are used to demonstrate that poly d(G-T) forms an ordered double helical structure at low temperatures (below 24 degrees C in 0.3 M NaCl) in which G and T are hydrogen bonded together in a wobble base pair hydrogen bonding scheme as…
DNA and Nucleic Acid ChemistryLanthanide and Transition Metal ComplexesAmino Acid Enzymes and Metabolism
Oliver W. Howarth、Martin F. Jarrold1978-01-01Journal of the Chemical Society Dalton Transactions
The first protonation site of [V10O28]6– differs both from the second protonation site and from the site of preferential interaction with aqueous manganese(II) ion. It is probably an out-of-plane apex, and not a bridging oxygen as has recently been proposed. The 51V n.m.r. linewidths are almost independent of direct p…
Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsVanadium and Halogenation Chemistry
J. Doucet、Patrick Keller、A. M. Levelut 等 4 位作者1978-01-01Journal de physique
From X-ray experiments performed on oriented samples of (R-)-chloro-2-propyl-p-hexyloxybenzylidene-p'-aminocinnamate (HOBACPC) by means of an electric field, we have identified two new ordered smectic phases which appear at lower temperature than the ferroelectric Sm C* phase. These two phases are characterized by a p…
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsMolecular spectroscopy and chirality
M. Shiga、Y. Nakamura1978-01-01Journal of Physics F Metal Physics
The Mossbauer spectra of BCC Fe-V alloys in the concentration range 40-80 at.% V have been obtained for both the ordered and disordered states. No broadening of the absorption line has been detected in an 80 at.% V alloy even at liquid He temperature indicating that the alloy is nonmagnetic. Broadening of absorption l…
Microstructure and Mechanical Properties of SteelsMetallurgical Processes and ThermodynamicsMagnetic Properties and Applications
Tadao Kotaka、Takeshi Tanaka、Mitsuhiro Hattori 等 4 位作者1978-01-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBlock Copolymer Micelles in Dilute SolutionTadao Kotaka, Takeshi Tanaka, Mitsuhiro Hattori, and Hiroshi InagakiCite this: Macromolecules 1978, 11, 1, 138–145Publication Date (Print):January 1, 1978Publication History Published online1 May 2002Published inissue 1 January 1978…
Advanced Polymer Synthesis and CharacterizationPolymer Nanocomposites and PropertiesBlock Copolymer Self-Assembly
John C. H. Spence1978-01-01Acta Crystallographica Section A
The calculation of dynamical elastic diffuse electron scattering from a crystal containing a point defect or dislocation may require prohibitively large amounts of computing time. Two approximations are described which greatly reduce the computer time required for these calculations, and so allow the simulation of ele…
Microstructure and mechanical propertiesElectron and X-Ray Spectroscopy TechniquesSurface and Thin Film Phenomena
W. C. Nieuwpoort、Doeke Post、P.Th. van Duijnen1978-01-01Physical review. B, Condensed matter
Ab initio self-consistent-field molecular-orbital calculations were performed on octahedral Fe${\mathrm{F}}_{6}$ and Fe${(\mathrm{CN})}_{6}$ clusters using extensive basis sets of Gaussian-type functions. Two distances relevant for ferrous and ferric compounds are considered. In this paper, we report the part of our r…
Magnetism in coordination complexesInorganic Chemistry and MaterialsInorganic Fluorides and Related Compounds
K.C. Lim、John T. Ho1978-01-01Molecular crystals and liquid crystals
A rotating-analyzer technique for measuring the optical birefringence in liquid crystals is described. This apparatus is continuously readable and has excellent sensitivity. For a sample 50 μm thick, the apparatus has a resolution in the change of birefringence of 4 × 10−6, corresponding to a temperature change of 1 m…
Liquid Crystal Research AdvancementsOptical Polarization and EllipsometryMolecular spectroscopy and chirality