English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A new method is developed to calculate the dilution ratio  N  of the two reactant solutions during nucleation rate determination. When the initial apparent supersaturation ratio  SN    =  f(N)  in the dilution tank is controlled between 1.66 and 1.67, the counted nuclei is the most, both nuclei dissolving and secondary nucleation avoided satisfactorily. Based on this methoed, Plutonium(IV) oxalate is precipitated by mixing equal volumes of tetravalent plutonium nitrate and oxalic acid solutions. Experiments are carried out by varying the supersaturation ratio from 8.37 to 22.47 and temperature from 25 to 50 °C. The experimental results show that the nucleation rate of plutonium(IV) oxalate in the supersaturation range cited above can be expressed by the equation  RN = AN   exp(− Ea/RT )exp[− B /(ln  S ) 2 ], where  AN    = 4.8 × 10 23  m −3  s −1   ,  and  Ea    = 36.2 kJ mol −1 , and  B  = 20.2. The crystal growth rate of plutonium(IV) oxalate is determined by adding seed crystals into a batch crystallizer. The crystal growth rate can be expressed by equation  G ( t ) =  kg   exp( −E’a/RT ) ( c  −  c   eq )   g   , where  kg    = 7.3 × 10 −7  (mol/L) −1.1 (m/s),  E ’   a    = 25.7 kJ mol −1 , and  g =  1.1.

Studies on nucleation and crystal growth kinetics of plutonium(IV) oxalatex