The essential oil composition leaves of Juniperus communis L.,Taxus canadensis Marshall.and Tsuga canadensis(L.)Carr.from Canada were investigated by head space solid phase microextraction(HS-SPME)and gas chromatograp...The essential oil composition leaves of Juniperus communis L.,Taxus canadensis Marshall.and Tsuga canadensis(L.)Carr.from Canada were investigated by head space solid phase microextraction(HS-SPME)and gas chromatography/mass spectrometry(GC-MS).Thirty-three,thirty and thirty-one components were identified representing 95.78%,93.89%,96.14%of the oil,respectively.Limonene(26.12%),benzene(15.62%),13-mrycene(9.08%)andβ-pinene(7.30%)were found to be the main constituents of J.communis;1-propanone(36.38%),morpholine(10.95%),methylamine(9.10%)and methanone(8.14%)were detected main components of Taxus canadensis;bornylacetate(26.84%),α-pinene(23.74%),camphene(11.93%)and limonene(6.02%)were determined as major constituents of Tsuga canadensis.The chemical distributions of the essential oil compounds in the genus pattern were discussed in means of chemotaxonomy and natural products.展开更多
针对中国先进研究堆(CARR)的具体结构和运行特点,利用Fortran程序设计语言开发了CARR热工水力安全分析程序TSACC(Thermal-hydraulic and Safety Analysis Code for CARR)。TSACC完全采用模块化结构设计,便于二次开发,可应用于多种事故...针对中国先进研究堆(CARR)的具体结构和运行特点,利用Fortran程序设计语言开发了CARR热工水力安全分析程序TSACC(Thermal-hydraulic and Safety Analysis Code for CARR)。TSACC完全采用模块化结构设计,便于二次开发,可应用于多种事故工况及其他堆型的分析计算。基于程序验证的基本思想,分别利用TSACC和商用程序RELAP5/Mod3对CARR丧失厂外电源事故工况进行了计算。得到了堆芯平均通道以及最热通道内冷却剂流量、温度和最小偏离泡核沸腾比(MDNBR)等参数的瞬态响应。将TSACC计算结果与RELAP5/Mod3计算结果进行比较、分析后发现:除冷却剂发生倒流前后二者计算结果相差较大外,总体吻合较好。局部值差别较大的主要原因是两个程序在低流速区域选用的换热公式不同。程序验证结果表明了TSACC的准确性和适用性。展开更多
文摘The essential oil composition leaves of Juniperus communis L.,Taxus canadensis Marshall.and Tsuga canadensis(L.)Carr.from Canada were investigated by head space solid phase microextraction(HS-SPME)and gas chromatography/mass spectrometry(GC-MS).Thirty-three,thirty and thirty-one components were identified representing 95.78%,93.89%,96.14%of the oil,respectively.Limonene(26.12%),benzene(15.62%),13-mrycene(9.08%)andβ-pinene(7.30%)were found to be the main constituents of J.communis;1-propanone(36.38%),morpholine(10.95%),methylamine(9.10%)and methanone(8.14%)were detected main components of Taxus canadensis;bornylacetate(26.84%),α-pinene(23.74%),camphene(11.93%)and limonene(6.02%)were determined as major constituents of Tsuga canadensis.The chemical distributions of the essential oil compounds in the genus pattern were discussed in means of chemotaxonomy and natural products.
文摘针对中国先进研究堆(CARR)的具体结构和运行特点,利用Fortran程序设计语言开发了CARR热工水力安全分析程序TSACC(Thermal-hydraulic and Safety Analysis Code for CARR)。TSACC完全采用模块化结构设计,便于二次开发,可应用于多种事故工况及其他堆型的分析计算。基于程序验证的基本思想,分别利用TSACC和商用程序RELAP5/Mod3对CARR丧失厂外电源事故工况进行了计算。得到了堆芯平均通道以及最热通道内冷却剂流量、温度和最小偏离泡核沸腾比(MDNBR)等参数的瞬态响应。将TSACC计算结果与RELAP5/Mod3计算结果进行比较、分析后发现:除冷却剂发生倒流前后二者计算结果相差较大外,总体吻合较好。局部值差别较大的主要原因是两个程序在低流速区域选用的换热公式不同。程序验证结果表明了TSACC的准确性和适用性。
