The concept of classified system is introduced from the point or view of systems engineering. Intending for management of operating funds in a bank, it introduces how to set up a corresponding system, and how to operates the system and their related character- istics, It also explains that all these can be conduced by computers.
Furthermore, a new method has been suggested to prepare layered zirconium compounds containing the N-(phosphonomethyl) iminodiacetic acid group (PMIDA) using distilled water as solvent.
The reaction mechanism of Cr(Ⅵ) I -system induced by Fe(Ⅱ) was studied by spectrophotometry. It was found that under the induction of Fe(Ⅱ),Cr(Ⅴ) as an intermediate is first formed,then it oxidizes I - to I 2 rapidly.
A semimicro method has been used to study the solubilities of the ternary system, Y(NO_3)_3·3H_2O-B15C5-CH_3CN, at 18℃. The results indicated that there is only one complex formed in this system. The stable complex has been isolated and its composition was determined by chemical analysis to be Y(NO_3)_3·B15C5·3H_2O and the dehydration behavior of the complex was studied using DTA and TG methods.
THIS ARTICLE TRY TO REVEAL, THE PRECISE THE IMPLICATION OF CONSERVATIVE FORCE FROM THAT INTERNAL FORCES DO WORK, AND INTRADUCE A CONCEPT OF INTERACTION POTENTIAL ENERGY BETWEEN SYSTEMS. THUS CAN DEEPLY COMPREHEND THE COM-CEPT OF POTENTIAL ENERGY. THIS IS UNDOUBTEDLY IMPORTANT TO THE RESEARCH OF TEACHING.
Micellar electrokinetic capillary chromatography (MECC) of electric neutral compounds wasstudied on a 0.05mm i.d. x 450mm fused silica capillary tube with sodium dodecyl sulfate(SDS)solution and 254nm UV detection. In open-tubular capillary two phases, aqueous and micellar,move with different velocities and micellar solubilization operates as the distribution process ofsolutes. A novel mixed ethanol-water micellar solution was introduced to MECC of weak polarcompounds. The effects of electric field strength...