In order to reduce detrimental influence of MC car-bides,oxide inclusions and microporocities ,it is defined that [C]≤0.010wt%(it will be better,when[C]≤0. 006wt%),[O]≤0.001wt%,[N]≤0.0012wt%in the single crystal superalloy DD3.Allthe decarbenization,deoXidation,denitrogenation and desulphurization are camed out through CO rcactionwith ebullition.
The removal of nitrogen from liquid steel by TiO2 based blast furnace slag was investigated in laboratory. The testing results show that more than 60 percent of nitrogen was removed from low carbon alu minium-killed steel with shielded argon atmosphere and the lowest [N] content about 10×10-6 was obtained.
This article tries to demonstrate the phonetic system of Gao-chun Dialect, especially to describe three group of nasal consonant homonyms [m] [n] [η] which can act as syllables independently in Gao-chun Dialect, and also to analyze something related.
Three polysaccharides,namely AP-1,AP-2,AP-3,which were proved to be homo-geneous by glass fiber paper electrophoresis,ultracentrifugation analysis and gel chromatography,were isolated from the stems of Dendrobium aphyllum The limiting viscosity numbers of three polysaccharides were 426.96, 416.96 and 234.03 respectively.
Discussed the equivalent conditions of f(x)=x and f(x)=x, applied thase conditions to analyse period and chaos problems of one dimension diserete dynamie system, and showed the application of equivalent conditions in solving equations with an example.
It is found from the C V results that in p ZnSe is high up to ～5×10 17 ·cm -3 . Adopting ZnCl 2 powder as n type dopants, we obtain n type ZnSe crystal films in which the electron concentration is high up to ～2 3×10 19 ·cm -3 examined by Hall method.
We proved that: Let T be a R-space, and f be a multiplicative function, fT, if f(n+B)-cf(n)∈T holds for a suitable positive integer B and a complex constant c, then c=±1, for every prime p there exists a suitable nonnegative integer α p such that f(p α p+r )(f(p α p )) r-1 =(f(p α p+1 )) r,r=2,3,…. Moreover, if c=1 or p≠2, then p α p |B. if c=-1, then 2 α 2 |2B. The previous conclusion was generalized.
In the present paper we study the remaing nontrivial case, that of a negative central charge-N.
The method applies to the standard arithmetic subgroups ofSO(n,1) (a case which was proved previously by Millson [Mi]), to the non-arithmetic lattices inSO(n,1) constructed by Gromov and Piatetski-Shapiro [GPS] and to groups generated by reflections.
We consider some remarkable central elements of the universal enveloping algebraU(gl(n)) which we call quantum immanants.
We express them in terms of generatorsEij ofU(gl(n)) and as differential operators on the space of matrices These expressions are a direct generalization of the classical Capelli identities.
In this paper, we prove the degenerations of Schubert varieties in a minusculeG/P, as well as the class of Kempf varieties in the flag varietySL(n)/B, to (normal) toric varieties.