نتایج جستجو برای: ni b
تعداد نتایج: 947442 فیلتر نتایج به سال:
We have measured the adiabatic elastic constants of two Cu-Al-Ni martensitic alloys using ultrasonic methods and we have compared the results to recent neutron-scattering experiments. It is shown that the elastic behavior of Cu-Al-Ni alloys follows the same trends exhibited by other Cu-based alloys; in particular, the TA2 long-wavelength acoustic modes are softer than all other modes. Disciplin...
Shape and size of the synthesized NiO nano-sheets were retained during transformation of sheet-like b-Ni(OH)2 to NiO at elevated temperatures via nano-sized zirconia coating on the surface of b-Ni(OH)2. The average grain size was 6.42 nm after 600 C treatment and slightly increased to 10 nm after 1000 C treatment, showing effective sintering retardation between NiO nano-sheets. The excellent th...
Pheophorbide a was prepared from a mixture o f chlorophylls a and b by differential extrac tion with HC1 and saponification. The insertion o f the following metal ions was investigated: Mg, Zn, Co, Cu, Ni. In the enzyme test with chlorophyll synthetase, the metallopheophorbides fall into two categories: the Mgand Zn-complexes are good substrates, the Co-, Cuand Ni-complexes are neither substra...
(1) a. Japanese datives appear to systematically map, in properties, to English double object constructions (DOCs) and not to prepositional datives (Zushi 1992, Miyagawa and Tsujioka 2005). b. We argue (following Zushi 1992) that the “standard” order of arguments in Japanese datives is a derived one. c. We propose this follows from “weak ni’s” the fact that in Japanese, ni is never a case probe...
A module M is called square-free if it contains nonon-zero omorphic submodules and B with A∩B= 0. Dually, Mis dual-square-free has no proper M=A+B M/A∼=M/B. In this paper we show that M=⊕i∈I Mi, then iff each Mi Mj ⊕j=i∈I are orthogonal. M=⊕ni=1Mi, dual-square-free, 1⩽i⩽n, ⊕ni=jMi factor-orthogonal. Moreover, in the finite case, weshow M=⊕i∈ISi a direct sum of non-is simple modules, dual-square...
A magnetic study of perovskites R E ( M ~ I . ~ B ~ ) O ~ (RE=Eu, Gd, Tb, Dy, Y; B=Ni, Co) is reported. It is found that investigated perovskites are nonhomogenous ferromagnets with relatively high Curie temperatures. The magnetic anisotropy of Ni-containing perovskites is much lower than that of Co-containing ones. It is supposed that domains with different charge state of ions and magnetic st...
Thin films of Na with Fe, Co, and Ni impurities are investigated. The magnetization of the impurities is measured by means of the anomalous Hall resistance. Fe and Co show a moment of about 6mu(B), while for Ni no moment is detected. Furthermore, the magnetic dephasing of the conduction electrons is measured by means of weak localization. The dephasing rate 1/tau(phi) of the 3d impurities diffe...
The application of theory and experiments to the elastic scattering in ion beam techniques has been investigated. Experimental elastic scattering cross sections for + Ni, p + , Li + Ni, B + Ni and C + I scattering systems have been determined. The optical model and R-matrix analyses have been applied to the experimental data. The calculated cross sections were found to be in very good agreement...
The asymetric unit of the title compound, [NiCl(2)(C(5)H(5)N)(2)](n), contains two Ni(II) ions located on different twofold rotational axes, two chloride anions and two pyridine rings in general positions. Each Ni(II) ion is coordinated by two pyridine rings, which form dihedral angles of 33.0 (2) and 11.0 (2)° for the two centers, and four chloride anions in a distorted octa-hedral geometry. T...
Bi 0.89 Ho 0.08 Sr 0.03 Fe 0.97-x Mn Ni a/b O 3 /La 0.7 0.3 MnO (BiFeO -Ni /LSMO), (Ni , a≠b a, b ∈ x, x = 0.01–0.04) films were successfully prepared by the wet chemical method. The results show that change of structure makes interface conductivity upper layer and bottom different, which in difference polarization. Ferroelectric polarization leads to changes thickness depletion height barrier,...
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