Crystal data for yttrium–indium–gallium and yttrium–scandium–gallium garnets
X-ray powder data are given for Y3In2Ga3O12 and Ya3Sc2Ga3O12. The refined cell parameters are 12.548 and 12.482 A, respectively.
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Experimental study of pulse propagation in curved elastic rods
The distortion of longitudinal pulses in slightly curved elastic rods is discussed in terms of an elementary theory in which the effects of rotary inertia and radial shear are neglected. Moreover, when the wavelength of the pulse is long enough, practically all the bending effects can be justifiably neglected. The exp…
Effect of Neutron-Irradiation on Thermal Conductivity, Electric Resistivity and Thermal Expansion of Boron Carbide
Boron carbide possessing porosities of 91 and 77%T.D. were irradiated at about 300°C to 6.0x1018∼ 3.3×1019 n/cm2 in helium atmosphere. The thermal conductivity, the electric resistivity and the linear thermal expansion were determined. Upon irradiation to 3.3×1019 n/cm2, cracking occurred in all of the 91%T.D. specime…
Barkhausen noise power versus size of a minor hysteresis loop
It has been observed that Barkhausen noise is quite low in the Rayleigh region and that it appears rather abruptly when the hysteresis loop departs from the Rayleigh region. These facts are explained in terms of the interaction between domain walls and crystalline defects. Only defects which have saturated (pressure i…
A recording refractometer for the measurement of refractive indices of solids in the wavelength range 8-14 mu m
A refractometer has been constructed which is capable of measuring refractive indices of infrared transmitting materials to an accuracy of +or-0.0001. Samples are used in the form of Littrow prisms and a precision goniometer incorporating a radial moire grating provides the method for angle measurement.
Parasitic Oscillations in Large Aperture Nd^3+:Glass Amplifiers Revisited
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text David C. Brown, "Parasitic Oscillations in Large Aperture Nd3+:Glass Amplifiers Revisited," Appl. Opt. 12, 2215-2217 (1973) Export Citation BibTex Endn…
Stress Relaxation Modulus of a Commercial Glass
The stress relaxation modulus in compression of a container glass was investigated over a wide range of strain, time, modulus, and temperature. The glass is a linear viscoelastic liquid up to 2% strain, and the modulus is a smooth function of time, with no pseudorubbery plateau apparent down to a modulus of 10° dynes/…
Measurement of orientation crystallization rates of linear polymers by means of dynamic X-ray diffraction technique. II. Frequency dispersion of strain-induced crystallization coefficient of natural rubber vulcanizates in subsonic range
The orientation crystallization behavior of natural rubber vulcanizates was investigated by means of a dynamic X-ray diffraction technique utilizing the half-circle sector technique. The frequency dependence of dynamic diffraction intensities from diatropic and paratropic crystal planes, (002) and (200) planes, was ob…
The deformation and twinning of graphite crystals under a point load
The deformation produced by point loading on the cleaved basal surfaces of graphite crystals has been studied in the scanning electron microscope. The experiments were of two types, viz. sliding and static contact. In the first a small tungsten stylus (tip radius ∼ 1 μm) was slid on the graphite surface inside the sca…
The Covalent Structure of Collagen
Preliminary to detailed amino acid sequence analysis of the peptide α1‐CB7 from calf skin collagen, the chymotryptic, tryptic and thermolytic peptides were isolated and their positions in the intact chain determined. The collagenase derived peptides α1(78), α1(125) and α1(78)‐CBN were also used as source of peptides a…
THE ABSORPTION OF CARBON MONOXIDE BY SILVER-COMPOUNDS
Abstract Unstable carbonyl ion Ag(CO)n+ was prepared from Ag2O, Ag2SO4 or AgClO4 and carbon monoxide in H2SO4 or H2SO4–SO3 solution. The value of ″n″ was 0∼ 2.0 at −10∼30°C, under CO pressure of 1∼19 atm.
The Thermoluminescent Properties of Lithium Borate Activated by Silver
To determine the effect of various impurities on the thermoluminescent properties of lithium borate, 60 phosphors were initially prepared which were individually doped with three different concentrations of manganese, cobalt, magnesium silver or one of 15 rare earth elements. Silver and manganese were the only impurit…
Magneto‐seebeck effect and Shubnikov‐de Haas effect in n‐type bismuth telluride
Abstract Shubnikov‐de Haas experiments were performed between 1.8 and 4.2 K on n‐Bi 2 Te 3 single crystals with carrier concentrations between 1.4 × 10 18 and 8.4 × 10 19 cm −3 .In addition the magneto‐Seebeck effect was measured between 20 and 100 K in transverse magnetic fields up to 6 T (60 kG). The Hall effect and…
Spectra of TetrahedralFe2+in MgAl2O4
Visible absorption features in (Mg, Fe) ${\mathrm{Al}}_{2}$${\mathrm{O}}_{4}$ are assigned to spin-forbidden electronic transitions on tetrahedral ${\mathrm{Fe}}^{2+}$. Values of the Racah parameters $B$ and $C$ are fitted to the observed spectrum. The spin-allowed transitions indicate an appreciable nonionic characte…
The Critical Slit Length of Pressurized Coated Fabric Cylinders
Four different theories predicting the burst strength of longitudinally slit pressurized fabric cylinders are compared with tests of warp cylinders having various diameters and lengths, containing slits of various lengths and widths. The fabric used was a neoprene-coated Dacron polyester with a warp strength of about…
Single-crystal electron paramagnetic resonance study of a trigonal vanadium tris(dithiolate) complex
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSingle-crystal electron paramagnetic resonance study of a trigonal vanadium tris(dithiolate) complexWhei Lu Kwik and Edward I. StiefelCite this: Inorg. Chem. 1973, 12, 10, 2337–2342Publication Date (Print):October 1, 1973Publication History Published online1 May 2002Publishe…
Magnetic Structure of ErFeO3below 4.5°K
Using long-wavelength ($\ensuremath{\lambda}\ensuremath{\sim}2.4$ \AA{}) neutrons, diffraction patterns of ErFe${\mathrm{O}}_{3}$ were taken at 140, 4.2, and 1.5\ifmmode^\circ\else\textdegree\fi{}K. Two possible structures for the ${\mathrm{Fe}}^{3+}$ spin system at 1.5\ifmmode^\circ\else\textdegree\fi{}K were found t…
Physicochemical and biological studies on the metal-induced conformational change in troponin A. Implication of carboxyl groups in the binding of calcium ion
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysicochemical and biological studies on the metal-induced conformational change in troponin A. Implication of carboxyl groups in the binding of calcium ionWilliam D. McCubbin and Cyril M. KayCite this: Biochemistry 1973, 12, 21, 4228–4232Publication Date (Print):October 1,…
Kikuchi correlations in Auger electron spectroscopy
Variations in Auger electron signal intensities with changing primary electron angle of incidence have been correlated with the Kikuchi display from a Si (111) surface. From this correlation a qualitative depth distribution of the carbon contaminant is inferred.
Radiation chemistry of aqueous solutions of simple RCN [hydrogen or alkyl cyanide] compounds
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadiation chemistry of aqueous solutions of simple RCN [hydrogen or alkyl cyanide] compoundsI. Draganic, Z. Draganic, Lj. Petkovic, and A. NikolicCite this: J. Am. Chem. Soc. 1973, 95, 22, 7193–7199Publication Date (Print):October 1, 1973Publication History Published online1…