肘关节恐怖三联征(terrible triad of the elbow)指肘关节后脱位时合并有尺骨冠状突及桡骨头骨折,常合并有内外侧韧带复合体的损伤,该概念由Hotchkiss^([1])在1996年首次提出。这是临床上比较少见的一种损伤,国内外的相关报道也较少。...肘关节恐怖三联征(terrible triad of the elbow)指肘关节后脱位时合并有尺骨冠状突及桡骨头骨折,常合并有内外侧韧带复合体的损伤,该概念由Hotchkiss^([1])在1996年首次提出。这是临床上比较少见的一种损伤,国内外的相关报道也较少。这种损伤以创伤机制复杂、治疗较困难、术后并发症多、疗效较差为特点^([2])。本院曾收治1例左肘关节恐怖三联征患者,并采用自制铰链式内稳定器治疗,术后疗效满意,现报告如下。展开更多
Silicon isotope analysis traditionally uses a standard-sample bracketing （SSB） method that relies upon greater instrument stability than can be consistently expected. The following proposed method reduces the level ...Silicon isotope analysis traditionally uses a standard-sample bracketing （SSB） method that relies upon greater instrument stability than can be consistently expected. The following proposed method reduces the level of instrumental stability required for the analysis process and provides a valid solution for high-precision and accurate studies of Si isotopic compositions. Rock samples were dissolved by using alkali fusion and acidification. Silicon isotopes were purified with an ion exchange resin. Interfering peaks for isotopes were separated by using a Nu Plasma 1700 multi-collector inductively coupled plasma mass spectrometry （MS） system in high-resolution mode （M/AM 〉 8000 RP）. Two magnesium isotopes （25Mg and 26Mg） and three silicon isotopes （28Si, 29Si, and 3;Si） were analyzed in the same data collection cycle. Mg isotopes were used as an internal standard to calibrate the mass discrimination effects in MS analysis of Si isotopes in combination with the SSB method in order to reduce the effects of MS interference and instrumental mass dis- crimination on the accuracy of measurements. The conventional SSB method without the Mg internal standard and the proposed SSB method with Mg calibration delivered consistent results within two standard deviations. When Mg was used as an internal standard for calibration, the analysis precision was better than 0.05 %0 amu.展开更多
文摘肘关节恐怖三联征(terrible triad of the elbow)指肘关节后脱位时合并有尺骨冠状突及桡骨头骨折,常合并有内外侧韧带复合体的损伤,该概念由Hotchkiss^([1])在1996年首次提出。这是临床上比较少见的一种损伤,国内外的相关报道也较少。这种损伤以创伤机制复杂、治疗较困难、术后并发症多、疗效较差为特点^([2])。本院曾收治1例左肘关节恐怖三联征患者,并采用自制铰链式内稳定器治疗,术后疗效满意,现报告如下。
基金funded by the National Natural Science Foundation of China(Grant Nos.41427804,41421002,41373004)Beijing SHRIMP Center Open Foundation,and Program for Changjiang Scholars and Innovative Research Team in University(Grant No.IRT1281)the MOST Research Foundation from the State Key Laboratory of Continental Dynamics(BJ08132-1)
文摘Silicon isotope analysis traditionally uses a standard-sample bracketing （SSB） method that relies upon greater instrument stability than can be consistently expected. The following proposed method reduces the level of instrumental stability required for the analysis process and provides a valid solution for high-precision and accurate studies of Si isotopic compositions. Rock samples were dissolved by using alkali fusion and acidification. Silicon isotopes were purified with an ion exchange resin. Interfering peaks for isotopes were separated by using a Nu Plasma 1700 multi-collector inductively coupled plasma mass spectrometry （MS） system in high-resolution mode （M/AM 〉 8000 RP）. Two magnesium isotopes （25Mg and 26Mg） and three silicon isotopes （28Si, 29Si, and 3;Si） were analyzed in the same data collection cycle. Mg isotopes were used as an internal standard to calibrate the mass discrimination effects in MS analysis of Si isotopes in combination with the SSB method in order to reduce the effects of MS interference and instrumental mass dis- crimination on the accuracy of measurements. The conventional SSB method without the Mg internal standard and the proposed SSB method with Mg calibration delivered consistent results within two standard deviations. When Mg was used as an internal standard for calibration, the analysis precision was better than 0.05 %0 amu.
