The enthalpy change of formation reaction of the \%N\%\|phenyl\|\%N\%\+′\|(1,2,3\|thiadiazol\|5\|yl)urea has been determined by a microcalorimeter, using 5\|amino\|1,2,3\|thiadiazole and phenylisocyanate as starting ...The enthalpy change of formation reaction of the \%N\%\|phenyl\|\%N\%\+′\|(1,2,3\|thiadiazol\|5\|yl)urea has been determined by a microcalorimeter, using 5\|amino\|1,2,3\|thiadiazole and phenylisocyanate as starting materials in the solvent of THF. The reaction temperature was kept at 25 ℃. On the basis of experimental and calculated results, the enthalpy change is Δ\-r\%H\%\+\{o-\}\-m=(-142.304±0.390) kJ·mol\+\{-1\}; the reaction order is \%n\%=1/2; the rate constant \%k\%=1.357 9×10\+\{-4\} s\+\{-1\} and the activation free\|energy is Δ\%G\%\+\{o-\}\-m=95.098 \{kJ·mol\+\{-1\}\}. The result indicates that the title reaction takes place easily at room temperature.展开更多
[Objective]The research aimed to study the regeneration technology of Cazania rigens L.leaves and screen out the optimum medium formula for the regeneration of Cazania rigens L.leaves.[Method]Using Japan imported C.ri...[Objective]The research aimed to study the regeneration technology of Cazania rigens L.leaves and screen out the optimum medium formula for the regeneration of Cazania rigens L.leaves.[Method]Using Japan imported C.rigens leaves as materials,the orthogonal test was made for the callus and adventitious buds induction in MS medium with different kinds and concentrations of hormones.The optimum medium formula for the regeneration of C.rigens leaves were screened out.[Result]On the medium of MS ＋ 0.8-1.0 mg/L TDZ ＋ 0.05-1.0 mg/L NAA,compact type and bright green calli were formed.When the leaves were inoculated on the medium of MS ＋ 0.5-1.0 mg/L TDZ ＋ 0.05-1.0 mg/L NAA,many adventitious shoots can be induced and the induction rate reached 100%.When strong adventitious shoots with the height of 2.0-3.0 cm were transplanted into the medium of 1/2 MS ＋0.1 mg/L NAA,the rooting situations were good and the rooting rate was 100%.[Conclusion]The research provided a new way for the rapid propagation of C.rigens and laid the foundation for the genetic transformation and new varieties breeding of C.rigens.展开更多
文摘The enthalpy change of formation reaction of the \%N\%\|phenyl\|\%N\%\+′\|(1,2,3\|thiadiazol\|5\|yl)urea has been determined by a microcalorimeter, using 5\|amino\|1,2,3\|thiadiazole and phenylisocyanate as starting materials in the solvent of THF. The reaction temperature was kept at 25 ℃. On the basis of experimental and calculated results, the enthalpy change is Δ\-r\%H\%\+\{o-\}\-m=(-142.304±0.390) kJ·mol\+\{-1\}; the reaction order is \%n\%=1/2; the rate constant \%k\%=1.357 9×10\+\{-4\} s\+\{-1\} and the activation free\|energy is Δ\%G\%\+\{o-\}\-m=95.098 \{kJ·mol\+\{-1\}\}. The result indicates that the title reaction takes place easily at room temperature.
基金Supported by the Extra-curricular Academic Research Found of 12th Batch of Students in Soochow University (KY2010114A)Science and Technology Support (Agriculture) Project of Suzhou Province(SNG0908)~~
文摘[Objective]The research aimed to study the regeneration technology of Cazania rigens L.leaves and screen out the optimum medium formula for the regeneration of Cazania rigens L.leaves.[Method]Using Japan imported C.rigens leaves as materials,the orthogonal test was made for the callus and adventitious buds induction in MS medium with different kinds and concentrations of hormones.The optimum medium formula for the regeneration of C.rigens leaves were screened out.[Result]On the medium of MS ＋ 0.8-1.0 mg/L TDZ ＋ 0.05-1.0 mg/L NAA,compact type and bright green calli were formed.When the leaves were inoculated on the medium of MS ＋ 0.5-1.0 mg/L TDZ ＋ 0.05-1.0 mg/L NAA,many adventitious shoots can be induced and the induction rate reached 100%.When strong adventitious shoots with the height of 2.0-3.0 cm were transplanted into the medium of 1/2 MS ＋0.1 mg/L NAA,the rooting situations were good and the rooting rate was 100%.[Conclusion]The research provided a new way for the rapid propagation of C.rigens and laid the foundation for the genetic transformation and new varieties breeding of C.rigens.
