In order to overcome the defects of expensive Ce4+ salt and the difficulty in industrial application,the influence of the initiator concentration,the dosage of acrylonitrile and temperature on the ration and efficiency of grafting was studied with Fe~(2+)-H_2O_2 initiation system, assessing the grafting ratio and grafting efficiency as the evaluation index.
To overcome the difficulty in self-pollination reproduction and threshing of HN5S,an indica photoperiod sensitive genic male sterile line,and the senescence of function leaf prior to seed mature of hybrid F1,the anther at the uninucleate stages of panicle development were used to culture in vitro excised from HN5S.
Our proofs proceed in the time domain and allow us to represent each solution regardless of the spectral radius of P(0):=2-s∑cα, which has been a difficulty in previous investigations of this nature.
It in fact not only reduces the possibility of difficulty arising from degeneracy, but also has the same advantages as pivot method in warm-start to resolve linear programming problems.
The PML technique is used to deal with the difficulty on truncating the unbounded domain while the DSC algorithm is utilized for the spatial discretization.
To circumvent this difficulty, this paper presents a novel hybrid numerical technique of combined difference and spectrum for time-domain Maxwell's equations.
A nonlinear proportion integration differentiation (PID) controller is proposed on the basis of recurrent neural networks, due to the difficulty of tuning the parameters of conventional PID controller.
The results show that the cratonic mantle, which was refractory and existed when the kimberlites intruded in the Paleozoic, had almost been replaced by the newly accreted fertile lithospheric mantle during the Mesozoic-Cenozoic.
Biolipids could make great contribution to petroleum hydrocarbons due to their comparable chemical components and the slightly refractory characteristics of biolipids during the microbial/thermal degradation.
In the electroretinogram, the responses of the regenerated eye, compared to the control, were characterized by lower amplitude and longer repolarization and refractory periods.
Influence of Microgravity on Self-Propagating High-Temperature Synthesis of Refractory Inorganic Compounds
Polydisperse microcomposites based on refractory compounds as new materials for thermal spray coatings