点阵CO2激光治疗女性轻中度压力性尿失禁的临床疗效分析

目的探究经阴道点阵CO₂激光治疗女性轻、中度压力性尿失禁(SUI)的临床疗效。方法回顾性研究本院2017年1月至2020年12月收治的轻中度SUI女性患者。激光治疗组41例,进行点阵CO₂激光联合盆底肌训练治疗,每月治疗1次,共治疗3次;生物反馈治疗组20例,采用生物反馈电刺激联合盆底肌训练。比较两组患者治疗后临床疗效、国际尿失禁委员会尿失禁问卷简表(ICI-Q-SF)、尿失禁生活质量问卷(I-QOL)及女性性功能量表(FSFI)评分。结果治疗后,激光治疗组总有效率为92.68%,疗效强于生物反馈组(P<0.05);治疗后ICI-Q-SF、I-QOL、FSFI评分均得到改善(P<0.01);与生物反馈治疗组比较,激光治疗组I-QOL、FSFI增加更显著(P<0.05),ICI-Q-SF评分明显降低(P<0.01)。3例患者治疗时述阴道烧灼感,休息后好转,5例患者出现一过性的尿急,部分患者阴道分泌物增多后自行恢复,整个治疗过程无其他不良事件发生。结论点阵CO₂激光治疗能够有效改善轻、中度SUI患者的...     

血管腔内重建在髂动脉病变引起的难治性动脉性勃起功能障碍治疗中的应用

目的 评估血管腔内重建治疗因髂动脉病变引起的动脉性勃起功能障碍的疗效及安全性.方法 选取2017年4月至2019年1月在本院收治的经动脉造影确诊的动脉性勃起功能障碍患者8例,进行术前评估后行髂内动脉或髂总动脉腔内血运重建术,术后3个月内口服抗血小板药物,随访时间6个月.结果 8例患者手术顺利,术中未出现特殊并发症,其中...     

Research on Design and Performance of Self-Compacting Cement Emulsified Bitumen Mixture (CEBM)

To meet the needs of the road industry for maintenance operations, a new cement emulsified bitumen mixture (CEBM) with early-strength, self-compacting, and room-temperature construction characteristics was designed. The strength formation mechanism of CEBM was revealed with a scanning electron microscope (SEM) and the surface free energy (SFE) theory. The mechanical properties and road performance of the CEBM were investigated extensively. The results show that before the demulsification of emulsified bitumen, the SFE of the bitumen–aggregate–water three-phase system was reduced due to the replacement of the bitumen–aggregate interface with water. The adhesion work between the emulsified bitumen and the aggregate is negative, which means the adhesion between the emulsified bitumen and the aggregate will not occur spontaneously due to the existence of water. The liquid emulsified bitumen improves the workability of the mixture and ensures that the mixture can be evenly mixed and self-compacted. After demulsification, the work of adhesion between the residual bitumen and the aggregate is positive, which means residual bitumen and aggregate can bond spontaneously. In addition, the hydration products of cement and aggregate form a skeleton, and the emulsified bitumen film wraps and bonds the cement and aggregate together, creating strength. The emulsified bitumen, cement content, and curing conditions have significant effects on the stability of CEBM. The recommended dosage of emulsified bitumen and cement is 8% and 8–10%, respectively. This material integrates the hardening effect of cement and the viscoelastic performance of bitumen and has good workability, mechanical properties, and road performance. Therefore, the CEBM is technically feasible for application to bitumen pavement.     

Penetration and Cratering of Steel Target by Jets from Titanium Alloy Shaped Charge Liners

In order to enlarge the crater diameter of shaped charge jet penetration into steel targets, this paper investigates the penetration and cratering characteristics of steel targets by shaped charge jets from titanium alloy liners. Titanium alloy shaped charge liners are prepared separately with mechanical processing and selective laser melting (SLM), and pulsed X-ray radiography is used to identify jet formation characteristics. Jet formation is numerically simulated by AUTODYN-3D, and steel target penetration tests are carried out at a short jet stand-off distance. The results show that AUTODYN-3D can realistically simulate jet formation from titanium alloy liners and that the SLM-processed liner exhibits better penetration performance than the mechanically processed liner. The existing cratering formula of jet penetration is modified to make it consistent with the aperture variations of jet penetration from titanium alloy-lined shaped charges at a short stand-off distance. The findings of this study are expected to provide technical and theoretical support for research on the penetration characteristics of the jets from titanium alloy-lined shaped charges.     

Sheep (Ovis aries) integrins αvβ1 and αvβ6 related to foot-and-mouth disease virus infection: Molecular cloning, sequence analysis and comparison with homologues

Four members of the αv integrin family of cellular receptors, αvβ1, αvβ3, αvβ6, and αvβ8, have been identified as receptors for foot-and-mouth disease virus (FMDV) in vitro, and integrins are believed to be the receptors used to target epithelial cells in the infected animals. To analyse roles of the αv integrins from a susceptible species as viral receptors, we have cloned sheep αv, β1, and β6 integrin cDNAs and compared them to those of other species. The coding sequences for sheep integrin αv, β1, and β6 were found to be 3147, 2397, and 2364 nuclotides in length, encoding 1048, 798, and 787 amino acids, respectively. The sheep αv, β1, and β6 subunits share many structural features including ligand binding domain and cysteine-rich region with homologues of other species. Phylogenetic trees and similarity analyses showed the close relationship of integrin genes among sheep, pigs, cattle and Bactrian camels that are susceptible to FMDV infection, which were distinct from the order Rodentia, Primates, Perissodactyla, Carnivora, Galliformes. We postulate that host tropism of FMDV may be related to divergence in integrin subunits among different species.     

桑杲运用和稳论治疗性早熟经验

<正>性早熟是指男童在9岁前,女童在8岁前出现第二性征,或女孩月经初潮发生在10岁以前,临床可判断为性早熟。据有关统计表明,目前我国儿童性早熟发病率已达1%,部分地区甚至高达3%^[1]。治疗首选药物促性腺激素释放激素拟似药物(Gn RH-a),价格昂贵。中医无此病名,将女童性早熟归属于“乳疠”“月经先期”等范畴。桑杲教授为第四批全国中医优秀人才,杭州市名中医,中医学博士,在多年临床工作中归纳提炼得出“和稳论”学术思想。和指调和、     

分叶指背五边形皮瓣在并指分指术中的应用

目的 探讨分叶指背五边形皮瓣应用于并指分指术的近期疗效.方法 对2018年1月至2019年10月温州医科大学附属第二医院育英儿童医院手外整形科应用分叶指背五边形皮瓣手术治疗的单侧单纯皮肤并指患儿15例临床资料进行回顾性分析.记录术后皮瓣坏死和创口感染等早期并发症发生情况;采用指蹼爬移Withey评分和瘢痕温哥华评分对患...     

^99mTc—MIBI心肌灌注显像定量分析评价体外反搏治疗的疗效

研究99mTc－seastmibi心肌显像在评价体外反搏治疗后疗效中价值。方法：本文对18例接受了体外反搏治疗的冠心病心肌缺血,在治疗前后进行了99mTc－MIBI心肌灌注显像,并对其结果作了定性与定量评价。结果：经一疗程的体外反搏治疗后,18例中有16例心肌缺血有不程程度的改善,其缺血面积由治疗前35．44％±15．83％缩小到27．63％±1277％（P＜0．005）,相对灌注指数由0．69±0．12增加到0．72±0．12（P＜0.05）,有效率为88．9％;2例患有严重冠脉病变的患者,治疗中病情恶化,缺血面积有扩大。结论：应用99mTc－MIBI心肌显像定量分板是评价体外反搏治疗效果、观察心肌血流改善程度准确、可靠的方法。     

多普勒组织成像技术对正常左室心肌舒缩运动特点的分析

目的应用多普勒组织成像技术（ＤＴＩ）探查正常人的室壁运动,以阐明心肌舒缩运动的特点。方法应用ＤＴＩ技术对２２例正常人的室壁运动进行观察,对由心尖部位三个切面所测六个室壁三节段之间的运动速度进行比较,并对同一部位在不同切面上的速度测值进行比较。结果①室壁基底段运动速度最快,中间段其次,心尖段最慢。②心室肌的运动在收缩期、心房收缩期沿心脏长轴方向的运动分量大于短轴,而在舒张早期其沿短轴方向的运动分量大于长轴。③左室游离壁的运动速度快于室间隔。结论多普勒组织成像技术探测室壁运动直观地反映了左室心肌的收缩方向是由心基底部朝向心尖的,其中基底部对左室射血作功贡献最大,心尖部最小;其舒张运动有可能不同于收缩运动,而更有可能是心室肌的一种“扩开”运动。