2.8 m,is one of the heaviest in the world,which composition is:Δ[C]≤±0.01 %,[H]=(0.8 2.0)×10 -6 ,[Al]= 0.005 % 0.007 %, [O],[S]=(18 25)×10 -6 .No≥1.6 mm defect was found in the forgings from the ingot.
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.
In laboratory,the regression equation of sulphur and oxygen in hot metal was studied as a[o]=-690.39[S]+528. 37.The chemical composition of new grade steel was designed. A freecutting semi-killed steel has been investigated and produced successfully in industrial-scale furnace,and the oxygen activity measured in ladles was at the level of 150～250 ppm.
Mode of action of PYM could be postulated as follows:PYM was activated in the present of Fe￣(2+) to become chelate comples with the approaching of the substrate DNA,by activating the surrounding O_2 to become active radical[O] attacking the substrate DNA to promote the degradation.
According to solidification characteristic of Up casting and thermodynamic theory, the forming mechanism of gas holes was analyzed. It is presented that the gas holes were caused by vapours. Hydrogen reacts with oxygen and forms water vapour H 2O (g) , that is, 2+=H 2O (g) .
First appeared in passing in the basic paper of O.
We define a partial order on the set No,c of pairs (O,C), where O is a nilpotent orbit and C is a conjugacy class in A(O), Lusztig's canonical quotient of A(O).
Real and Rational Forms of Certain O2(?)-actions, and a Solution to the Weak Complexification Problem
The Combinatorics of Category O over symmetrizable Kac-Moody Algebras
We show that the structure of a block outside the critical hyperplanes of category O over a symmetrizable Kac-Moody algebra depends only on the corresponding integral Weyl group and its action on the parameters of the Verma modules.