颈椎异常增生病是一种病因未明而临床意义显著的新近才得到描述的特殊病变。Maja Stupar等收集年龄在40—69岁范围的240张X线片。两个所用的主要结果方7法分别是分析C3-6的有或无颈椎异常增生病的节段和C1-7的有或无退行性关节病特异性...颈椎异常增生病是一种病因未明而临床意义显著的新近才得到描述的特殊病变。Maja Stupar等收集年龄在40—69岁范围的240张X线片。两个所用的主要结果方7法分别是分析C3-6的有或无颈椎异常增生病的节段和C1-7的有或无退行性关节病特异性节段。列联系数、在5%显著性水平、在每个水平,均用来测定在CPH和DJD之间相关强度。95%可信区间(95%CI)的优势比(OR)也依赖于评估每个水平的相关强度。结果:我们的研究表明:c。,的CPH和相邻节段椎间盘变性病(DDD)存在于大约2:1优势比或轻度到中度的相关强度;证明在C4CPH和C4.5DDD之间和在C5CPH和C5.6DDD之间具有最强相关度。按年龄分层的结果表明存在相联系的类似模式,甚至达到了最初的假设的OR≥5.0(95%CI〉1.0)或在一些年龄范畴“C≥4(P405)的中度相关性”,包括在40—44岁,50—59岁和60—64岁年龄组;这些优势比分别如下:OR=5.5(95% CI 1.39—21.59);OR=6.7(95% CI 1.65—27.34);OR=5.3(95% CI 1.35—21.14)。结论:我们的结果表明:CPH有约2:1优势比,即在特异的颈椎水平存在在DJD(合并DDD)仅轻度至中度的相关性;因此CPH可以在颈椎特异性水平除几个因素之一外有助于DJD的发展。展开更多
The Compact Pulsed Hadron Source (CPHS) project is a university-based proton accelerator platform (13 MeV,16 kW,50 mA peak current,0.5 ms pulse width at 50 Hz) for multi-disciplinary neutron and proton application...The Compact Pulsed Hadron Source (CPHS) project is a university-based proton accelerator platform (13 MeV,16 kW,50 mA peak current,0.5 ms pulse width at 50 Hz) for multi-disciplinary neutron and proton applications.The CPHS linac consists of a 3 MeV radio-frequency quadrupole (RFQ) linac and a 13 MeV drift tube linac (DTL).Both the RFQ and DTL share a 325 MHz,2.1 MW klystron source.A single iris-type radio-frequency (RF) coupler is used to feed 537 kW of RF power to the RFQ cavity.Three-dimensional electromagnetic models of the ridge-loaded tapered waveguide (RLWG) and the coupler-cavity system are presented,and the design process and results of the RLWG and iris plate are described in detail.展开更多
文摘颈椎异常增生病是一种病因未明而临床意义显著的新近才得到描述的特殊病变。Maja Stupar等收集年龄在40—69岁范围的240张X线片。两个所用的主要结果方7法分别是分析C3-6的有或无颈椎异常增生病的节段和C1-7的有或无退行性关节病特异性节段。列联系数、在5%显著性水平、在每个水平,均用来测定在CPH和DJD之间相关强度。95%可信区间(95%CI)的优势比(OR)也依赖于评估每个水平的相关强度。结果:我们的研究表明:c。,的CPH和相邻节段椎间盘变性病(DDD)存在于大约2:1优势比或轻度到中度的相关强度;证明在C4CPH和C4.5DDD之间和在C5CPH和C5.6DDD之间具有最强相关度。按年龄分层的结果表明存在相联系的类似模式,甚至达到了最初的假设的OR≥5.0(95%CI〉1.0)或在一些年龄范畴“C≥4(P405)的中度相关性”,包括在40—44岁,50—59岁和60—64岁年龄组;这些优势比分别如下:OR=5.5(95% CI 1.39—21.59);OR=6.7(95% CI 1.65—27.34);OR=5.3(95% CI 1.35—21.14)。结论:我们的结果表明:CPH有约2:1优势比,即在特异的颈椎水平存在在DJD(合并DDD)仅轻度至中度的相关性;因此CPH可以在颈椎特异性水平除几个因素之一外有助于DJD的发展。
文摘The Compact Pulsed Hadron Source (CPHS) project is a university-based proton accelerator platform (13 MeV,16 kW,50 mA peak current,0.5 ms pulse width at 50 Hz) for multi-disciplinary neutron and proton applications.The CPHS linac consists of a 3 MeV radio-frequency quadrupole (RFQ) linac and a 13 MeV drift tube linac (DTL).Both the RFQ and DTL share a 325 MHz,2.1 MW klystron source.A single iris-type radio-frequency (RF) coupler is used to feed 537 kW of RF power to the RFQ cavity.Three-dimensional electromagnetic models of the ridge-loaded tapered waveguide (RLWG) and the coupler-cavity system are presented,and the design process and results of the RLWG and iris plate are described in detail.