R. R. Ryan、Kenneth Hedberg1969-06-01The Journal of Chemical Physics
Electron-diffraction data for B2Cl4 with SiCl4 present as an impurity have been gathered at nozzle temperatures of 251°, 295°, 331°, 376°, and 423°K. Complete structural analyses of both molecules were carried out at the lowest and the highest temperatures by least squares based upon intensity curves, but converged re…
Synthesis and characterization of novel inorganic/organometallic compoundsNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography
P. G. de Gennes1969-06-01Molecular Crystals
Some recent applications of the Oseen-Zocher-Frank elastic theory of nematic and cholesteric liquid crystals are reviewed. (1) The effects of a static magnetic field H are calculated in detail. In particular, for a cholesteric system, the spiral structure is distorted by the field and the period increases with H, up t…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsMolecular spectroscopy and chirality
Sankar Adhya、James A. Shapiro1969-06-01Genetics
Sankar L Adhya, James A Shapiro; THE GALACTOSE OPERON OF E. COLI K-12. I. STRUCTURAL AND PLEIOTROPIC MUTATIONS OF THE OPERON, Genetics, Volume 62, Issue 2,
Metal and Thin Film MechanicsDiamond and Carbon-based Materials ResearchEnzyme function and inhibition
F. Haberey1969-06-01Journal of Applied Physics
Conductivity measurements in various polycrystalline ferrites have shown that the temperature dependence of the conductivity has to be described by two different activation energies, one which is attributed to the bulk material and the other which is due to the poorly conducting layers introduced by Koops. Activation…
Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsMagneto-Optical Properties and Applications
Thomas B. Higerd、C. A. Baechler、Richard S. Berk1969-06-01Journal of Bacteriology
The bacteriocin from Pseudomonas aeruginosa, pyocin, consists of a contractile sheath and inner core reminiscent of T-even coliphage tails. Contraction of the outer sheath was found to be promoted by 0.5 m magnesium chloride, 1% Formalin, low pH, sonic treatment, and freezing or thawing or both. The contraction caused…
Hydrogels: synthesis, properties, applicationsPickering emulsions and particle stabilization
Prentiss G. Cox1969-06-01Journal of Experimental Zoology
Abstract The work reported here affirms that the ependyma supports tail regeneration and demonstrates that the peripheral nerve supply makes no essential contribution to the regenerative process. The normal peripheral nerve supply in the tail of Anolis carolinensis was found to be 4.5 fibers per (100 μ) 2 . In tails i…
Developmental Biology and Gene RegulationSilk-based biomaterials and applicationsPlanarian Biology and Electrostimulation
Bruce H. Justice、Edgar F. Westrum1969-06-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermophysical properties of the lanthanide oxides. V. Heat capacity, thermodynamic properties, and energy levels of cerium(III) oxideBruce H. Justice and Edgar F. Westrum Jr.Cite this: J. Phys. Chem. 1969, 73, 6, 1959–1962Publication Date (Print):June 1, 1969Publication His…
Catalysis and Oxidation ReactionsThermal and Kinetic AnalysisChemical Thermodynamics and Molecular Structure
T. P. Jones、R. L. Coble、C. J. Mogab1969-06-01Journal of the American Ceramic Society
A defect diffusion coefficient was determined in single crystal aluminum oxide from 1400° to 1850°C by measuring the movement of the color boundary in a Ti 3+− doped single crystal heated in air. In this temperature range the experimental data can be represented by The interpretation developed is that this equation re…
Advanced ceramic materials synthesisAluminum Alloy Microstructure PropertiesAluminum Alloys Composites Properties
R. Jeffries、J. O. Warwicker1969-06-01Textile Research Journal
The mechanism of the interfibrillar and intrafibrillar swelling of cotton has been investigated by infrared and x-ray methods. Emphasis is on swelling in caustic soda, but other reagents are also considered. The presence of intrafibrillar swelling can be shown by detection of intermediate complex formation, while the…
Textile materials and evaluationsMaterial Properties and Processing
Marcel Pourbaix1969-06-01CORROSION
A brief survey is given of recent applications of electrode potential measurements for the study of the corrosion of metals and alloys in the presence of aqueous solutions, molten salts and gaseous atmospheres. Particularly considered are: (1) cathodic and anodic protection of passivable metals and alloys in the prese…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability
W. Haas、James E. Adams、J. J. Wysòcki1969-06-01Molecular Crystals
Mixtures of cholesteryl iodide and cholesteryl bromide with cholesteryl nonanoafce were exposed to UV radiation and the resultant color shifts were measured as a function of exposure and composition. The formation of images by this process will be described, and the presiding mechanism will be briefly discussed.
Liquid Crystal Research AdvancementsDyeing and Modifying Textile FibersColor Science and Applications
Kuniaki Tanaka、Akio Kunioka、Yoshio Sakai1969-06-01Japanese Journal of Applied Physics
CdO films were prepared by a D–C reactive sputtering method with various sputtering voltages. The characters of the prepared films are compared with the reflection electron diffraction and X-ray diffraction patterns. Especially, the effects of the sputtering voltage and partial pressure of oxygen were investigated con…
ZnO doping and propertiesGas Sensing Nanomaterials and SensorsCopper-based nanomaterials and applications
W. A. Dollase1969-06-01American Mineralogist
The crystal structure of the Mn3+-bearing epidote, piemontite, has been refined. For a crystal of composition, Cz6,PmPSll, refinement of the occupancies cf the two large, nominally calcium sites and the three non-equivalent octahedral sites, gives: where M = MnD. ,Feu. All of the (Mn, Fe) substitution for Al occurs in…
Calcium Carbonate Crystallization and InhibitionClay minerals and soil interactions
D. J. Johnson、C. N. Tyson1969-06-01Journal of Physics D Applied Physics
Carbon fibres graphitized at high temperature have been investigated by the techniques of x-ray diffraction and electron microscopy. The particular sample discussed here contains misoriented turbostratic crystals stacked end to end with widths in the range 20-110 Å; the maximum frequency occurs at 65 Å and this is als…
Graphene research and applicationsFiber-reinforced polymer compositesGraphite, nuclear technology, radiation studies
David Campbell1969-06-01Journal of Applied Polymer Science
Abstract The thiol‐disulfide exchange reaction is shown to be applicable to cleavage of disulfide crosslinks in accelerated sulfur vulcanizates of natural rubber. The reaction, in conjunction with the previously reported selective cleavage of polysulfide crosslinks, is used to determine the distribution of crosslink t…
Polymer Nanocomposites and PropertiesEpoxy Resin Curing ProcessesSynthesis and properties of polymers
James Reid Campbell、George H. Nancollas1969-06-01The Journal of Physical Chemistry
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization and dissolution of strontium sulfate in aqueous solutionJames Reid Campbell and G. H. NancollasCite this: J. Phys. Chem. 1969, 73, 6, 1735–1740Publication Date (Print):June 1, 1969Publication History Published online1 May 2002Published inissue 1 June 1969http…
Crystallization and Solubility Studies
Barry Friedman、Patrick R. Dugan、Robert M. Pfister 等 4 位作者1969-06-01Journal of Bacteriology
Several gram-negative, polarly flagellated rods were isolated on the basis of their flocculent growth habit. Some of the isolates possessed a capsular matrix which is composed of exocellular fibrils. Other isolates did not appear to have a capsular matrix when examined with a bright-field microscope with or without th…
Polymer Surface Interaction StudiesEnzyme Production and CharacterizationPickering emulsions and particle stabilization
I. G. Chistyakov、W. M. Chaikowsky1969-06-01Molecular Crystals
-A systematic X-ray diffraction study of the 10 homologues of n-azoxybenzenes has been performed. The structures of nematic and smectic mesophases as a function of the strength of the magnetic field and the temperature have been established.
Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern Formation
Ellis B. Cowling、WYNFORD BROWN1969-06-01Advances in chemistry series
The susceptibility of cellulose to enzymatic hydrolysis is determined largely by its accessibility to extracellular enzymes secreted by or bound on the surface of cellulolytic microorganisms. Direct physical contact between these enzymes and the cellulosic substrate molecules is an essential prerequisite to hydrolysis…
Biofuel production and bioconversionEnzyme Catalysis and ImmobilizationAdvanced Cellulose Research Studies
James P. Bell、Takayuki Murayama1969-06-01Journal of Polymer Science Part A-2 Polymer Physics
Abstract Nylon 66 films exhibiting form I melting behavior show the γ mechanical relaxation at −140°C. Samples which have form II melting behavior do not show this relaxation. The γ relaxation disappears when material having form I behavior is converted to material having form II behavior by annealing or by cold drawi…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesMaterial Properties and Processing