Materials Literature
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Photo-oxidation of unsaturated fatty acids or esters (LH = oleic acid, linoleic acid, methyl linoleate, and linolenic acid) by oxygen proceeds efficiently in the presence of a riboflavin derivative, riboflavin-2′,3′,4′,5′-tetra-acetate (Fl), in acetonitrile by a type II (singlet oxygen) mechanism with a limiting quant…
Abstract For several reasons, calibrated wheat starch is by far the best performing stilt material in carbonless copy paper. Due to its size selection and its nice globular shape, it gives excellent stilt functionality at relatively low doses compared to native wheat starch. Less binder is needed and better copy quali…
A series of porphyrins (2a)–(5a), unsymmetrically substituted in their meso-positions with 3,5-di-tbutyl-4-hydroxyphenyl(DtB4HP) and 4-hydroxyphenyl (4HP) groups, has been synthesised and characterised. The two di-DtB4HP di-4HP isomeric porphyrins, (3a) and (4a)(called ‘cis’ and ‘trans’, respectively), in particular a…
Symbols and notation. Introduction. The stiffness method using the basic equations. The stiffness method using virtual work. The stiffness method for beams and planar frames. The stiffness method for three-dimensional structures. Special topics for the stiffness method. The flexibility method. Appendices. Index.
The development of FBR fuel systems with high reliability and long in-core residence capability is required to make the fast reactor economically competitive with other electrical energy sources. PNC program of fuels and materials development has been primarily focused on mixed uranium/plutonium oxide (MOX) fuel with…
Two nonoriented low-silicon iron cores were compared. The laminations were magnetized as in an induction motor stator core, and the flux density and localized power loss measured at various flux densities using arrays of search coils and thermistors mounted on individual laminations. A uniform static radial stress of…
Initial magnetization, demagnetization, and magnetic viscosity data are presented for sintered and melt-spun NdFeB over a range of temperatures. A model based on strong domain wall pinning is used to investigate the energy barriers in operation in each case. Temperature is observed to have little effect on magnetizati…
The biocompatibility of two different titanium alloys, Ti-6Al-4V ELI and Ti-5Al-2, 5Fe, and pure titanium were evaluated. The results were as follows: 1) Titanium alloys were implanted into the dorsal subcutaneous tissues of the Hartley guinea-pig for 12 weeks, immersed in calf serum or in Ringer's solution for 8 week…
Abstract The construction and utilization of a simple light‐transparent NaCl thin‐layer FTIR spectroelectrochemical cell for transparency measurements is reported. This cell has a 0.25‐mm optical pathlength and a three‐electrode configuration. The application of this cell for in situ FTIR measurements is demonstrated…
Single crystal X-ray analysis of black phosphorus, a narrow gap semiconductor with puckered layer structure, was performed under high pressure up to 4.7 GPa Pressure dependences of the lattice parameters show anisotropy, as reported in the literature. The length of the b axis and unit cell volume decrease Linearly wit…
The α/γ equilibrium in the ternary Fe–Mn–Al system was experimentally investigated at 1 073, 1 273 and 1 373 K. The tie-lines in the (α+γ) two-phase field were determined at 1 273 K by measuring the alloy content of the individual phases of equilibrated two-phase specimens by means of X-ray microanalysis. These experi…
In order to evaluate the effects of relative humidity (RH) at room temperature and kinds of chlorides on atmospheric stress corrosion cracking (SCC) of SUS 304 and 316 L stainless steels in contact with chlorides, SCC tests were carried out in RH controlled environments by using U-bend specimens deposit of 0.5 N chlor…
Infrared reflection and Raman spectra have been measured for two complex perovskite ceramic materials, Ba(Mn 1/3 Ta 2/3 )O 3 and Ba(Ni 1/3 Ta 2/3 )O 3 . Two‐mode behavior was observed for both of the compounds in the inner vibrations of the BO 6 ‐type octahedrons, where B indicates Mn, Ta, and Ni ions. This behavior i…
A novel method for determining the sizes of iron parts in a magnetic circuit, which preserves the requirement of prescribed flux densities, has been developed. In order to take into account the nonlinear characteristics of iron, the magnetization integral equation method is used in the analysis. The effectiveness of t…
In order to elucidate the mechanism of the enhancement of the terminal solubility for hydrogen (TSH) in Nb by alloying with undersized Mo atoms, the state of hydrogen was studied by the channeling method using a nuclear reaction $^{1}\mathrm{H}$${(}^{11}$B, \ensuremath{\alpha})\ensuremath{\alpha}\ensuremath{\alpha} in…
Crystallographic and kinetic characteristics of martensitic transformations and parameters of shape memory effect in B2 compounds of titanium Ti 50Ni50-xXx (X = Fe, Co, Pd, Pt, Au, Cu) and Ti50Pd50-xY x (Y = Fe, Co, Cu), where 0 ≤ x ≤ 50 are investigated. Temperature, hysteresis, value of reversible deformation and st…
Abstract Erstmals wurde in Form farbloser, transparenter Einkristalle Li 4 MoO 5 [aus Gemengen von Li 2 O und MoO 3 . Li:Mo = 4,2:1, Ni‐Bömbchen, 950°C, 28 d] sowie Li 4 WO 5 [aus Gemengen von Li 2 O und WO 3 , Li:W = 4,4:1, Au‐Rohr, 900°C, 30 d] dargestellt. Nach Einkristalldaten liegt bei den isotypen Oxiden vom Li…
The present work has shown that the cause of seam pucker in structurally jammed fabrics is mainly due to the sewing tensions of the sewing threads and that the fabric instead of trying to take up a more jammed configuration, as believed so far, tries to resist jamming and in doing so, buckles out of the fabric plane.…
The fracture resistance of a commercial TiB 2 particle/SiC matrix composite was evalu ated at temperatures ranging from 20 to 1400°C. A laser interferometric strain gage (LISG) was used to continuously monitor the crack mouth opening displacement (CMOD) of the chevron-notched and straight-notched, three-point bend spe…
2,3,7,8-Tetrabromodibenzofuran in ppm concentrations can be generated via reductive debromination and subsequent intramolecular cyclization during thermolysis of polybrominated aromatic compounds such as decabromodiphenyl ethers which are used as flame retardants in plastics. The respective tetrabromodibenzodioxin iso…