美因茨的P2实验致力于通过电子-质子散射将弱混合角sin^2θ_W的测量精确度提高到0.13%.为了压低由于质子结构和箱图贡献的不确定性,选择了低平均四动量转移Q2(4.5×10^(-3)GeV2/c2)和低束流能量(155 Me V).为了达到实验要求的巨大...美因茨的P2实验致力于通过电子-质子散射将弱混合角sin^2θ_W的测量精确度提高到0.13%.为了压低由于质子结构和箱图贡献的不确定性,选择了低平均四动量转移Q2(4.5×10^(-3)GeV2/c2)和低束流能量(155 Me V).为了达到实验要求的巨大统计量,新的美因茨能量恢复超导加速器(MESA)正在建设中.本文描述了测量的动机、实验和加速器面临的挑战以及解决问题的方案.展开更多
Background:The management of giant omphaloceles (GO) can be quite difficult when there is absence of abdominal domain. Coverage with delayed closure has been described. We present a technique to create an adequate per...Background:The management of giant omphaloceles (GO) can be quite difficult when there is absence of abdominal domain. Coverage with delayed closure has been described. We present a technique to create an adequate peritoneal domain. Methods:This is a retrospective review of our experience using an intraperitoneal tissue expander (IPTE) to create adequate abdominal domain in 2 patients with GO. Results:In 2 children with unrepaired GO,an IPTE was placed into the pelvis and was inflated to the target volume over 3 to 4 weeks. At the definitive operation for the closure of the abdominal defect,the IPTE was removed,allowing reduction of all the viscera into the peritoneal cavity and achieving complete abdominal wall closure. The patients are now 1 year postoperative,each having a normal abdomen and enjoying normal growth and development. Conclusion:Intraperitoneal tissue expander placement can create the needed domain over several weeks in GO. Its use in 2 cases was associated with satisfactory complete abdominal wall closure in short order. This technique should be considered as a treatment option.展开更多
In a multicentre study of the German Contact Dermatitis Research Group, sodium lauryl sulfate (SLS) 0.25%and 0.5%aq. has been added to routine allergen patc h tests to assess its properties as a convenient diagnostic ...In a multicentre study of the German Contact Dermatitis Research Group, sodium lauryl sulfate (SLS) 0.25%and 0.5%aq. has been added to routine allergen patc h tests to assess its properties as a convenient diagnostic indicator of individ ual susceptibility to irritation at the time of patch testing. Previous studies indicated that irritant SLS reactivity may be related to individual factors such as age and sex. As these factors are, in turn, among the important predictors o f contact allergy to many allergens, e.g. summarized in the ‘MOAHLFA index’, t he impact of the MOAHLFA factors on irritant SLS patch test reactivity, and thus a potential for confounding, was assessed in the 5971 participating patients. A s a result of 2 logistic regression analyses with an irritant reaction to 0.25% and 0.5%SLS, respectively, as outcome, male sex was identified as a relatively weak but significant risk factor (OR 1.38), while age 40 years or older was an e ven weaker risk factor (OR 1.22 and 1.15, respectively). Upon detailed analysis, no clear age gradient could, however, be identified. 1-day exposure time almos t halved the odds of an irritant SLS reaction. In conclusion, this type of SLS p atch test can be regarded as robust, indicating individual irritability relative ly independent from the individual factors analysed here.展开更多
基金Supported the Cluster of Excellence PRISMA and the Collaborative Research Center 1044,both Funded Through the Deutsche Forschungsgemeinschaft(DFG)
文摘美因茨的P2实验致力于通过电子-质子散射将弱混合角sin^2θ_W的测量精确度提高到0.13%.为了压低由于质子结构和箱图贡献的不确定性,选择了低平均四动量转移Q2(4.5×10^(-3)GeV2/c2)和低束流能量(155 Me V).为了达到实验要求的巨大统计量,新的美因茨能量恢复超导加速器(MESA)正在建设中.本文描述了测量的动机、实验和加速器面临的挑战以及解决问题的方案.
文摘Background:The management of giant omphaloceles (GO) can be quite difficult when there is absence of abdominal domain. Coverage with delayed closure has been described. We present a technique to create an adequate peritoneal domain. Methods:This is a retrospective review of our experience using an intraperitoneal tissue expander (IPTE) to create adequate abdominal domain in 2 patients with GO. Results:In 2 children with unrepaired GO,an IPTE was placed into the pelvis and was inflated to the target volume over 3 to 4 weeks. At the definitive operation for the closure of the abdominal defect,the IPTE was removed,allowing reduction of all the viscera into the peritoneal cavity and achieving complete abdominal wall closure. The patients are now 1 year postoperative,each having a normal abdomen and enjoying normal growth and development. Conclusion:Intraperitoneal tissue expander placement can create the needed domain over several weeks in GO. Its use in 2 cases was associated with satisfactory complete abdominal wall closure in short order. This technique should be considered as a treatment option.
文摘In a multicentre study of the German Contact Dermatitis Research Group, sodium lauryl sulfate (SLS) 0.25%and 0.5%aq. has been added to routine allergen patc h tests to assess its properties as a convenient diagnostic indicator of individ ual susceptibility to irritation at the time of patch testing. Previous studies indicated that irritant SLS reactivity may be related to individual factors such as age and sex. As these factors are, in turn, among the important predictors o f contact allergy to many allergens, e.g. summarized in the ‘MOAHLFA index’, t he impact of the MOAHLFA factors on irritant SLS patch test reactivity, and thus a potential for confounding, was assessed in the 5971 participating patients. A s a result of 2 logistic regression analyses with an irritant reaction to 0.25% and 0.5%SLS, respectively, as outcome, male sex was identified as a relatively weak but significant risk factor (OR 1.38), while age 40 years or older was an e ven weaker risk factor (OR 1.22 and 1.15, respectively). Upon detailed analysis, no clear age gradient could, however, be identified. 1-day exposure time almos t halved the odds of an irritant SLS reaction. In conclusion, this type of SLS p atch test can be regarded as robust, indicating individual irritability relative ly independent from the individual factors analysed here.
