谷子种子经高空气球搭载后的遗传变异研究

目的 选育出高产、蛋白质和用脂肪含量高的谷子品（系）种。方法 利用高空气球搭载谷子的干种子,在高空飘游８ｈ后回收种植,对其植物学特性及进行分析研究。结果 种子发芽率比对照低５．２％,发芽热比对照高２１．１％。ＳＰ１代植株高度比对照低６．８ｃｍ,旗叶面积比对照高２５％,穗重比对照高１５．９％;ＳＰ３代大穗型株系性状相对稳定,其中ＳＰ３－２的种子蛋白质和脂肪含量均高于对照经高空气球搭载后的ＳＰＥ－３５     

中药材肉桂的X衍射Fourier谱分析

为鉴别中药材肉桂与川桂、少花桂和其伪品三钻风，本文应用粉末Ｘ射线衍射分析技术测定了１０个样品的Ｆｏｕｒｉｅｒ（付里叶）图谱。分析结果表明１０个样品各自具有表现其所含化学成分总体特征的衍射图谱。并构成衍射模糊图形（定性）与特征标记峰（定量）的图谱特征。根据这些特征达到在衍射空间鉴别中药材的目的。     

京冀蠓类初步名表及毛蠓1新种(双翅目:蠓科)

〔目的〕发布京冀地区蠓类本底调查情况,为《环渤海湾输入性医学媒介(蠓类)调查研究》提供科学对照依据。〔方法〕根据实地调查和文献查询列出了京冀地区蠓类种群组成,并对2005年在秦皇岛北戴河捕获的1新种蠓类进行了描述。〔结果〕京冀地区蠓类初步名表,9属36种及毛蠓1新种。〔结论〕加强媒介昆虫的本底调查研究,是科学制定虫媒防治预案、疫情预测和有效控制及预警外来有害媒介的重要手段。     

北京市城区与郊区中老年男性性功能的现状调查

目的:调查并比较北京市城区与郊区中老年男性勃起功能障碍(ED)、性欲低下和射精障碍的患病情况。方法:采用分层多阶段整群不等比例随机抽样方法选择北京市15个社区1 656例年龄≥50岁男性作为调查对象,分别记录国际勃起功能问卷(IIEF-5)评分及男性性功能问卷(O'Leary 1995),应用SPSS 17.0对结果进行统计学分析。结果:符合标准的调查对象共1 644例,城区1 244例,郊区400例。IIEF-5评分、性欲评分和射精评分的中值,城区为5、2和4,郊区为13、2和5,城区与郊区间相比的差异有统计学意义(P<0.01)。城区与郊区间IIEF-5评分的差异与年龄、糖尿病和心脑血管疾病的患病情况、是否饮酒和服用5α还原酶抑制剂相关(P<0.01)。结论:郊区中老年男性性功能优于城区。郊区中老年男性的总体年龄小、心脑血管疾病和糖尿病的患病率低,以及较少应用5α还原酶抑制剂和适量的饮酒可能是造成勃起功能优于城区的原因。     

Successful Treatment of Erdheim-Chester Disease With Coronary Artery Involvement

Erdheim-Chester disease (ECD) is a rare non-Langerhans histiocytosis and inflammatory myeloid neoplasm with poor prognosis. Symmetric long bone osteosclerosis occurs in nearly all patients, but other organs are often involved. Coronary artery involvement is rare, but was encountered in a patient who experienced angina. Radiologic presentation and histologic findings were consistent with diagnosis of ECD. A soft-tissue mass was found surrounding the right atrium, ascending aorta, and all branches of coronary artery. Interferon-alfa treatment was successful. In conclusion, we recommend coronary artery computed tomography angiography for cardiovascular evaluation of ECD and interferon-alfa to treat ECD.     

Two-stage maxillary distraction osteogenesis using a modified external device: clinical outcome and complications

Rigid external distraction is currently used to correct severe maxillary hypoplasia. The purpose of this retrospective study was to present the clinical results and complications of a two-stage surgical approach using a modified external distraction system that consists of maxillary distraction and then maxillary fixation. We treated eight patients with cleft lip and palate in this way from 2016 to 2018. Lateral cephalograms taken before the first operation, after distraction, two weeks after the second operation, and one year after treatment were used to examine maxillofacial morphology. Velopharyngeal function was evaluated by a speech therapist. The mean movements of the maxilla forwards and downwards at Point A were 12.0 mm and 8.0 mm at the completion of distraction and those at Point B were 5.0 mm backwards and 9.7 mm downwards. Mouth opening was limited at this time, and was relieved after maxillary fixation. The mean relapse one year postoperatively was 24.3% horizontally and 52.5% vertically. Velopharyngeal function was unchanged by the operation. We conclude that the method has advantages that include the short duration of wearing distractors and increased acceptance by patients. The modified external device advanced the midface sufficiently.     

北京市医药分开综合改革对医生的影响调查与对策研究 ——以北京市10所三甲医院为例

目的了解北京市医药分开综合改革对医生的影响,在调查中发现问题,明确问题产生的原因,提出相应的对策和建议,为今后政策的制定提供依据。方法运用问卷调查、现场访谈和文献检索等数据收集法,开展北京市医药分开综合改革对医生影响的调查;利用对比分析法对现存医药卫生改革的两面性进行分析。结果医生整体上对北京市医药分开综合改革在一定程度上缓解了患者看病贵的问题持积极态度,但医生对医药分开综合改革的关注度和参与度不够。结论仍然需要调动医生的积极性,发挥主观能动性,依据供给侧改革政策和"两个允许"政策进一步完善医药分开综合改革。