摘要：The structure and working principle of a kind of permanent-magnet adsorption tracked wall-climbing ro-bot used in ship was analyzed in this paper. The robot can complete vertical climbing wall function when perma-nent-magnet adsorption tracked was driven by ac servo motor. In order to improve the load capacity and obstaclesurmounting ability of robot, a new permanent-magnet auxiliary caster adsorption mechanism and driven wheelfloating mechanism were used for the design of structure. In thispaper, the mechanical state of the permanent-mag-netic adsorption tracked climbing mechanism was analyzed. Through the magnetic simulation and experimental a-nalysis of magnetic adsorption system, the adsorption unit structure and electric drive system parameters of thepermanent-magnet tracked wall-climbing robot were reasonably designed.

摘要：为了优化磁刺激线圈设计,解决磁场聚焦性不足的问题,并为以后经颅磁刺激(TMS)线圈结构的进一步改进提供设计依据,将经颅磁刺激技术更好的应用到临床治疗和科学研究中,在深入查阅研究相关文献的基础上,介绍了现有的几种典型线圈结构,并对经颅磁刺激中使用的不同线圈以及其在空间中产生的电场和磁场的强度和分布进行了分析、对比,研究了不同线圈结构的聚焦性和应用场合。研究结果表明:现有的改进型线圈结构虽然都具有自身的优点,并且在聚焦性或刺激深度方面大大超越了传统线圈,但结构过于复杂,能耗过高,实用性不足,在需要精确刺激靶点区域的情况下仍然不能提供令人满意的空间分辨率,因此经颅磁刺激线圈结构的进一步优化设计仍然具有很大的提升空间。

摘要：从设计电工实验中培养学生的思维能力刘慕圆（市工业学校）在教学中我们做的实验大部分是认知性和论证性的，学生在做实验之前，先由教师讲解实验目的、实验原理及实验步骤，学生只是在实验中按照原理图接线，按实验步骤测量、记录数据．一般受条件限制，几个同学一组，有...

摘要：目的：报告9例关节内原发恶性肿瘤病例，探讨合理的诊断方法及治疗方案。方法2001年8月至2011年7月共收治关节内原发恶性肿瘤的9例，其中男6例、女3例，年龄21～76岁、平均43.8岁。7例滑膜肉瘤（均为膝关节），1例脂肪肉瘤（膝关节），1例恶性弥漫性巨细胞瘤（髋关节）。回顾其临床表现、影像特点、诊断途径、手术方式，评价术后关节功能、并发症及转归。结果9例入院前均有关节疼痛，MRI典型表现为T1加权像低信号，T2加权像高信号或混杂信号伴明显强化，均接受手术治疗，术后平均随访27.5（12～60）个月，中位随访27个月，4例最终行截肢术，另5例保肢治疗后功能良好。结论关节内原发恶性肿瘤发病率极低；易误诊为良性病变。本组病例以膝关节滑膜肉瘤多见；术前需活检明确诊断，根据病理结果制订治疗方案（行新辅助化疗或术后放化疗），患者能有良好的预后。根据MRI评估关节受累情况，需设计良好的外科切除边界；获得有效的肿瘤切除。

摘要：Ankylosing spondylitis(AS) is a chronic inflammatory disease that affects 1% of the general population. As one of the most severe types of spondyloarthropathy, AS affects the spinal vertebrae and sacroiliac joints, causing debilitating pain and loss of mobility. The goal of this review is to provide an overview of AS, from the pathophysiological changes that occur as the disease progresses, to genetic factors that are involved with its onset. Considering the high prevalence in the population, and the debilitating life changes that occur as a result of the disease, a strong emphasis is placed on the diagnostic imaging methods that are used to detect this condition, as well as several treatment methods that could improve the health of individuals diagnosed with AS.