综合利用CCD(Corrosion Control Document)、RBI(Risk Based Inspection)和IOW(Integrity Op-erating Window)技术,并引入PDCA(Plan-Do-Check-Action)的管理理念,结合我国石化企业的实际情况,探讨建立一套完整的基于风险的腐蚀管理控制...综合利用CCD(Corrosion Control Document)、RBI(Risk Based Inspection)和IOW(Integrity Op-erating Window)技术,并引入PDCA(Plan-Do-Check-Action)的管理理念,结合我国石化企业的实际情况,探讨建立一套完整的基于风险的腐蚀管理控制技术体系。技术体系涵盖了材料防腐、工艺防腐、腐蚀监检测等各方面的内容,形成一套流程化,联系紧密、合力互补的防腐体系。技术体系能够合理分配防腐资源,加强腐蚀中间过程控制,并能持续自我改进。应用体系中的关键技术,已经为中国石化30多家企业的140余套装置提供了技术服务,并取得了良好的社会效益和经济效益。展开更多
Utilization of a two-line breeding system via photoperiod-thermo sensitive male sterility has a great potential for hybrid production in wheat （Triticum aestivum L.）. 337S is a novel wheat male sterile line sensitiv...Utilization of a two-line breeding system via photoperiod-thermo sensitive male sterility has a great potential for hybrid production in wheat （Triticum aestivum L.）. 337S is a novel wheat male sterile line sensitive to both short daylength/Iow temperature and long daylength/high temperature. Five F2 populations derived from the crosses between 337S and five common wheat varieties were developed for genetic analysis. All Fl＇s were highly fertile while segregation occurred in the F2 populations with a ratio of 3 fertile：l sterile under short daylength/Iow temperature. It is shown that male sterility in 337S was controlled by a single recessive gene, temporarily designated as wptms3. Bulked segregant analysis （BSA） coupled with simple sequence repeat （SSR） markers was applied to map the sterile gene using one mapping population. The wptms3 gene was mapped to chromosome arm 1BS and flanked byXgwm413 and Xgwm182 at a genetic distance of 3.2 and 23.5 cM, respectively. The accuracy and efficiency of marker-assisted selection were evaluated and proved essential for identifying homozygous recessive male sterile genotypes of the wptms3 gene in F2 generation.展开更多
Temperature plays a vital role in development, survival mad reproduction of Tephritidae species and other insects. Recent research demonstrates tempera- ture is a crucial factor influencing population fluctuation and ...Temperature plays a vital role in development, survival mad reproduction of Tephritidae species and other insects. Recent research demonstrates tempera- ture is a crucial factor influencing population fluctuation and geographical distribution of Bactrocera （Bactrocera） corre.cta （Bezzi）. The adult stage of li. correcta, with apparent Aliapanse＇, was considered to be the most important life stage to overcome lower temperature. According to this biological feature, the survival rate of adult B. correcta which were exposed to low temporature （0, 3, 6, 9℃） for ditferont durations （1, 3, 6, 12, 24, 48, 72, 96, 120 h） was studied. The results showed that this fruit fly could not survive at 0 ℃ over 24 h. When exposed to 0 ℃ for 12 h, the survival rate was lower than 40%. The survival rate was higher than 60% when the adults were exposed to 3 ℃ for 24 h. More than 50% of adult B. correcta could survive for 48 h at 6 ℃. This fruit fly had a stronger tolerance at 9 ~C for 72 h, with the adult survival rate higher than 80%. The results are useful for prediction of occurrence and gcographiead distribution of B. correcta, which helps in developing better management strategies for this important insect pest.展开更多
文摘综合利用CCD(Corrosion Control Document)、RBI(Risk Based Inspection)和IOW(Integrity Op-erating Window)技术,并引入PDCA(Plan-Do-Check-Action)的管理理念,结合我国石化企业的实际情况,探讨建立一套完整的基于风险的腐蚀管理控制技术体系。技术体系涵盖了材料防腐、工艺防腐、腐蚀监检测等各方面的内容,形成一套流程化,联系紧密、合力互补的防腐体系。技术体系能够合理分配防腐资源,加强腐蚀中间过程控制,并能持续自我改进。应用体系中的关键技术,已经为中国石化30多家企业的140余套装置提供了技术服务,并取得了良好的社会效益和经济效益。
基金supported by the National Basic Research Program (973) of China (Nos. 2007CB109006 and 2009CB118304)the National High-Tech R&D Program (863) of China (No. 2009AA101102)the National Natural Science Foundation of China (Nos. 30671291 and 30971777)
文摘Utilization of a two-line breeding system via photoperiod-thermo sensitive male sterility has a great potential for hybrid production in wheat （Triticum aestivum L.）. 337S is a novel wheat male sterile line sensitive to both short daylength/Iow temperature and long daylength/high temperature. Five F2 populations derived from the crosses between 337S and five common wheat varieties were developed for genetic analysis. All Fl＇s were highly fertile while segregation occurred in the F2 populations with a ratio of 3 fertile：l sterile under short daylength/Iow temperature. It is shown that male sterility in 337S was controlled by a single recessive gene, temporarily designated as wptms3. Bulked segregant analysis （BSA） coupled with simple sequence repeat （SSR） markers was applied to map the sterile gene using one mapping population. The wptms3 gene was mapped to chromosome arm 1BS and flanked byXgwm413 and Xgwm182 at a genetic distance of 3.2 and 23.5 cM, respectively. The accuracy and efficiency of marker-assisted selection were evaluated and proved essential for identifying homozygous recessive male sterile genotypes of the wptms3 gene in F2 generation.
基金Supported by National Natural Science Foundation of China(41401065)Applied Fundamental Research Project of Yunnan Province(2015FB109)
文摘Temperature plays a vital role in development, survival mad reproduction of Tephritidae species and other insects. Recent research demonstrates tempera- ture is a crucial factor influencing population fluctuation and geographical distribution of Bactrocera （Bactrocera） corre.cta （Bezzi）. The adult stage of li. correcta, with apparent Aliapanse＇, was considered to be the most important life stage to overcome lower temperature. According to this biological feature, the survival rate of adult B. correcta which were exposed to low temporature （0, 3, 6, 9℃） for ditferont durations （1, 3, 6, 12, 24, 48, 72, 96, 120 h） was studied. The results showed that this fruit fly could not survive at 0 ℃ over 24 h. When exposed to 0 ℃ for 12 h, the survival rate was lower than 40%. The survival rate was higher than 60% when the adults were exposed to 3 ℃ for 24 h. More than 50% of adult B. correcta could survive for 48 h at 6 ℃. This fruit fly had a stronger tolerance at 9 ~C for 72 h, with the adult survival rate higher than 80%. The results are useful for prediction of occurrence and gcographiead distribution of B. correcta, which helps in developing better management strategies for this important insect pest.
