简介：Chitinisoneofthemostabundantnaturalresources.chitosanisdeacetylatedfromchitin.Asnaturalorganisms,chitosaniseasiertobedecomposedwithorganismsandeatable.Sochitosaniswildlyusedinbiology,medicine,foodstuff,cosmeticsandsoon[1,2]Chitinisasortofnaturalglucosaminecompoundwithwealthyresources,butalargeamountofchitinispreparedfromcrabshellandcrayfishshell.Someresearchworkshavecarriedonthepreparationofchitosanfromotherresources,suchassilkwormpupa,wastemyceliaetc.[3,4]

简介：FurfuralinaqueoussolutionwastreatedbyUV/O3method.Theresultsshowthattheremovalrateoffurfuralisseverelyenhancedandthesynergismphenomenonappearswhenultravioletandozonearepresenttogether.TheinfluencesofexperimentalparameterssuchaspH,theintensityoflightandthenegative-positiveionsonfurfuraldegradationwereinvestigated.Theresultsindicatethatfurfural(300mg/L)isalmostcompletelydegradedafter3hundertheoptimumconditions.TheintermediateinthefurfuraldegradationwascharacterizedbyGC-MSandIRspectrumandthedegradationmechanismoffurfuralbyUV/O3technologywasproposed.

简介：基于铵硝酸盐的关系的研究(一)爆炸和它的热稳定性，惰性的代理人被加到一因为消除爆炸特征一and以便是irrestorable。使用实验和各种各样的测试技术的大数量的结果证明热稳定性上的改进修改一是为消除爆炸特征的基本原因一。修正计划被认为有下列特征：可靠、稳定的技术，要求市场的产品，低投资和好经济回来。并且在修理时期期间，一个愿望的正常生产没被影响，并且经济、社会、环境的好处好。