Evidence for the intermediacy of the triplet state in the direct photoisomerization of thioindigo dyes
info:eu-repo/semantics/published
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Clebsch−Gordan coefficients for crystal space groups
A practical method for calculating Clebsch−Gordan coefficients for crystal space groups is presented. It is based on properties of the space group irreducible representations as induced from ray representations of subgroups. Using this method, we obtain all Clebsch−Gordan coefficients for a family of representations i…
Negative-ion/molecule reactions in sulphur hexafluoride
Using a double Townsend (uniform field) ionization chamber, the authors studied the ion conversion reactions involving SF 6 - and SF 5 - in SF 6 by observing, with mass spectrometer sampling, the processes occurring when these ions were injected separately from the source region into that where collisional detachment…
Comparative Studies on the Properties of Tryptophanase and Tyrosine Phenol‐lyase Immobilized Directly on Sepharose or by Use of Sepharose‐Bound Pyridoxal 5′‐Phosphate
Tryptophanase from Escherichia coli B/qt 7-A and tyrosine phenol-lyase (beta-tyrosinase) from Escherichia intermedia were immobilized on Sepharose 4B by several direct coupling reactions or through pyridoxal 5'-phosphate previously bound to Sepharose. The most active preparation of immobilized tryptophanase was obtain…
Magnetic and electrochemical properties of transition metal complexes with multiple metal-to-metal bonds. IV. Octachlorodimolybdate(n-) with n = 3 and 4 and tetrabutyratodimolybdate(n+) with n = 0 and 1
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic and electrochemical properties of transition metal complexes with multiple metal-to-metal bonds. IV. Octachlorodimolybdate(n-) with n = 3 and 4 and tetrabutyratodimolybdate(n+) with n = 0 and 1F. Albert Cotton and Erik PedersenCite this: Inorg. Chem. 1975, 14, 2, 39…
Lattice Thermal Conductivity of Crystals Containing Dislocations
General method to treat the scattering of lattice waves by static strain fields in anisotropic solids was applied to the calculation of thermal conductivity of crystals containing dislocations. The scattering cross widths for edge and screw dislocations in cubic crystals with {111} <110> and {110} <110> slip systems w…
Phase transition in a polymer chain in dilute solution
The order of the phase transition within a long polymer molecule in dilute solution brought about by the intramolecular forces is investigated within the context of a lattice model. It is found that the entropy is continuous at the transition but that the density changes discontinuously, implying that the transition h…
Short−range order fluctuations in the isotropic phase of a liquid crystal MBBA
We have measured the polarized (I∥) and the depolarized (I⊥) scattered light intensities by fluctuations of the orientational order parameter as a function of two scattering angles over a range of temperatures close to and above the isotropic−nematic phase transition of para−methoxybenzylidine para−n−butylaniline (MBB…
The thermal conductivity of nickel and copper dispersed in poly(vinyl chloride)
Abstract The thermal conductivity of segregated distributions of poly (vinyl chloride)/nickel (PVC/Ni) and poly(vinyl chloride)/copper (PVC/Cu) was measured for volume fractions ranging from 0 to 0.15. The thermal conductivities increased from 0.15 Btu/hr ft °F for unmodified PVC to 2.79 Btu/hr ft °F for PVC/15 percen…
Chemical modification of yeast 3-phosphoglycerate kinase.
Sulfhydryl reagents, as well as mild hydrogen peroxide oxidation, do not inhibit the activity of yeast phosphoglycerate kinase, indicating that the single thiol group and 3 methionine residues present in the enzyme are not essential for activity. Nitration of phosphoglycerate kinase by tetranitromethane inhibits the e…
Crystal and molecular structures of ion radical molecular complexes of cis-bis(trifluoromethylethylene-1,2-dithiolato)nickel with phenothiazine and phenoxazine. Effects of donor-acceptor separation on the molecular properties
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structures of ion radical molecular complexes of cis-bis(trifluoromethylethylene-1,2-dithiolato)nickel with phenothiazine and phenoxazine. Effects of donor-acceptor separation on the molecular propertiesAnami. Singhabhandhu, P. D. Robinson, J. H. Fang,…
Deformational, swelling, and potentiometric behavior of ionized poly(methacrylic acid) gels. II. Experimental results
Abstract The deformational, swelling, and potentiometric behavior of poly(methacrylic acid) gels was measured as a function of the degree of crosslinking, ionic strength, and degree of ionization. The comparison of the stress–strain behavior with theoretical relations derived in the preceding part has shown that the r…
Effect of pressure on the zone-center phonons of PbTiO3and on the ferroelectric-paraelectric phase transition
The first-order Raman spectrum of single-crystalline PhTi${\mathrm{O}}_{3}$ in the teatragonal ferroelectric phase was studied at room temperature as a function of hydrostatic pressure up to 80 kbar. Mode Gr\"uneisen parameters, as well as higher-order coefficients in the expansion of phonon frequency vs pressure are…
Comparative Electron-Microscope Studies on Type-III and Type-I Collagens
Long-spacing-segment crystallites prepared from type III collagen with the chain composition [alpha1(III)]3 and type I collagen with the chain composition [alpha(I)]i12alpha2 have been compared in the electron microscope after positive. staining with phosphotungstic acid and uranyl acetate. The comparison revealed sev…
An Analysis of the Impedance of Polycrystalline Beta‐Alumina
A procedure is described in this paper for distinguishing in the measured electrical properties of polycrystalline β‐alumina, the separate contributions of the grain boundaries and of the crystal, i.e. , the grain interiors. This separation is brought about through the use of a model for these properties. Certain quan…
Physical adsorption of patchwise heterogeneous surfaces. I. Heterogeneity, two-dimensional phase transitions, and spreading pressure of the krypton-graphitized carbon black system near 100.deg.K
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysical adsorption of patchwise heterogeneous surfaces. I. Heterogeneity, two-dimensional phase transitions, and spreading pressure of the krypton-graphitized carbon black system near 100.deg.KFrederick A. Putnam and Tomlinson Fort Jr.Cite this: J. Phys. Chem. 1975, 79, 5,…
Effective conductivity of two−phase material with cylindrical phase boundaries
A two−phase material in which the phase boundaries are cylindrical surfaces is considered. The generators of the phase boundaries are parallel to the z axis and the x and y axes are the principal axes of the effective conductivity tensor. If the two phases have conductivities σ1 and σ2, then the effective conductivity…
Blue dextran-sepharose: an affinity column for the dinucleotide fold in proteins.
A procedure is described to utilize blue dextran-Sepharose as an affinity chromatographic column specific for the super-secondary structure called the dinucleotide fold, which forms the binding sites for substrates and effectors on a wide range of proteins. The procedure can be used to identify proteins, either purifi…
Chemical shift in the X-ray K absorption edge of strontium
It has been observed here that the K edge of strontium is shifted towards the high energy side in all its compounds with respect to strontium metal. These shifts have been correlated, qualitatively with the interatomic distances and the per cent ionic character of the bonds in simple compounds. A graph of observed shi…
Optical absorption edge of CdAs2‐based glasses
Abstract The results of the absorption edge study of some glasses based on CdAs 2 are discussed in terms of internal potential fluctuations. Both the electrostatic and deformation fluctuations are present in a‐CdGeAs 2 whereas in remaining glasses only the former were observed. A qualitative description of the electro…