99Tcm is the most commonly used diagnostic radioisotope.And 188Re is an excellent therapeutic radioisotope with a gamma photon for imaging.Both locate in the same group and have very similar properties. 99Tcm(VII)can ...99Tcm is the most commonly used diagnostic radioisotope.And 188Re is an excellent therapeutic radioisotope with a gamma photon for imaging.Both locate in the same group and have very similar properties. 99Tcm(VII)can be partially reduced to a black insoluble precipitate by aerobic cultures of Escherichia coli,and trapped intracellularly.However,188Re(VII)cannot be reduced and trapped,because of its lower oxidizing power of perrhenate as compared with pertechnetate or other reasons.展开更多
The observation of the fault-zone trapped waves was conducted using a seismic line with dense receivers across surface rupture zone of the M=8.1 Kunlun Mountain earthquake. The fault zone trapped waves were separated ...The observation of the fault-zone trapped waves was conducted using a seismic line with dense receivers across surface rupture zone of the M=8.1 Kunlun Mountain earthquake. The fault zone trapped waves were separated from seismograms by numerical filtering and spectral analyzing. The results show that: a) Both explosion and earthquake sources can excite fault-zone trapped waves, as long as they locate in or near the fault zone; b) Most energy of the fault-zone trapped waves concentrates in the fault zone and the amplitudes strongly decay with the distance from observation point to the fault zone; c) Dominant frequencies of the fault-zone trapped waves are related to the width of the fault zone and the velocity of the media in it. The wider the fault zone or the lower the velocity is, the lower the dominant frequencies are; d) For fault zone trapped waves, there exist dispersions; e) Based on the fault zone trapped waves observed in Kunlun Mountain Pass region, the width of the rupture plane is deduced to be about 300 m and is greater than that on the surface.展开更多
在山西临猗进行了枣园绿盲蝽Apolygus lucorum(Meyer-Dür)绿色防控技术的研究和示范。组建"冬剪残桩、寄生蜂释放、性诱剂诱捕、生物制剂喷施"为主要措施的枣园绿盲蝽绿色防控技术体系。结果表明,人工大量释放红颈常室茧...在山西临猗进行了枣园绿盲蝽Apolygus lucorum(Meyer-Dür)绿色防控技术的研究和示范。组建"冬剪残桩、寄生蜂释放、性诱剂诱捕、生物制剂喷施"为主要措施的枣园绿盲蝽绿色防控技术体系。结果表明,人工大量释放红颈常室茧蜂Peristenus spretus Chen et van Achterberg、绿盲蝽性诱剂等技术后,冬枣幼果(疏果前)和果实(疏果后)受害率在绿色防控园分别为14.4%和4.2%,与农户常规防治园的差异不显著;红颈常室茧蜂对绿盲蝽若虫的平均寄生率为37.5%,显著高于农户常规防治园的6.2%;每公顷枣园总计诱集到30 749头绿盲蝽成虫,平均每个诱捕器能诱捕到绿盲蝽成虫(683.3±23.1)头。6-8月绿色防控园绿盲蝽的数量(5.05±0.86)头/百枝,显著低于农户常规防治园(12.71±2.22)头/百枝。绿色防控技术完全替代化学防治,有效控制了枣园绿盲蝽的种群发生与为害。展开更多
基金Supported by the Science&Technology Commission of Shanghai Municipality(No.06DZ19506)the National Natural Science Foundation of China(No.20501022)the Project of Knowledge Innovation of Chinese Academy of Sciences(No.KJCXI-SW-08)
文摘99Tcm is the most commonly used diagnostic radioisotope.And 188Re is an excellent therapeutic radioisotope with a gamma photon for imaging.Both locate in the same group and have very similar properties. 99Tcm(VII)can be partially reduced to a black insoluble precipitate by aerobic cultures of Escherichia coli,and trapped intracellularly.However,188Re(VII)cannot be reduced and trapped,because of its lower oxidizing power of perrhenate as compared with pertechnetate or other reasons.
基金Joint Earthquake Science Foundation of China (201001).
文摘The observation of the fault-zone trapped waves was conducted using a seismic line with dense receivers across surface rupture zone of the M=8.1 Kunlun Mountain earthquake. The fault zone trapped waves were separated from seismograms by numerical filtering and spectral analyzing. The results show that: a) Both explosion and earthquake sources can excite fault-zone trapped waves, as long as they locate in or near the fault zone; b) Most energy of the fault-zone trapped waves concentrates in the fault zone and the amplitudes strongly decay with the distance from observation point to the fault zone; c) Dominant frequencies of the fault-zone trapped waves are related to the width of the fault zone and the velocity of the media in it. The wider the fault zone or the lower the velocity is, the lower the dominant frequencies are; d) For fault zone trapped waves, there exist dispersions; e) Based on the fault zone trapped waves observed in Kunlun Mountain Pass region, the width of the rupture plane is deduced to be about 300 m and is greater than that on the surface.
文摘在山西临猗进行了枣园绿盲蝽Apolygus lucorum(Meyer-Dür)绿色防控技术的研究和示范。组建"冬剪残桩、寄生蜂释放、性诱剂诱捕、生物制剂喷施"为主要措施的枣园绿盲蝽绿色防控技术体系。结果表明,人工大量释放红颈常室茧蜂Peristenus spretus Chen et van Achterberg、绿盲蝽性诱剂等技术后,冬枣幼果(疏果前)和果实(疏果后)受害率在绿色防控园分别为14.4%和4.2%,与农户常规防治园的差异不显著;红颈常室茧蜂对绿盲蝽若虫的平均寄生率为37.5%,显著高于农户常规防治园的6.2%;每公顷枣园总计诱集到30 749头绿盲蝽成虫,平均每个诱捕器能诱捕到绿盲蝽成虫(683.3±23.1)头。6-8月绿色防控园绿盲蝽的数量(5.05±0.86)头/百枝,显著低于农户常规防治园(12.71±2.22)头/百枝。绿色防控技术完全替代化学防治,有效控制了枣园绿盲蝽的种群发生与为害。
