Contribution of pulsed Doppler echocardiography to ultrasound diagnosis of congenital heart diseases

The authors document the importance of echocardiograhy (ECHO) with special respect to the pulsed Doppler technique (PDE) in the diagnosis of congenital heart diseases. Typical ECHO and PDE findings in atrial and ventricular septal defects, patent ductus arteriosus, valvular stenosis and insufficiency, absence of pulmonary valves, tricuspid and pulmonary atresia, Fallot's tetralogy, arterial trunk, double-outlet right ventricle, transposition of the great arteries, total anomalous pulmonary venous drainage and hypoplastic left-heart syndrome are described. The authors conclude that a combination of M-mode, cross-sectional and pulsed Doppler echocardiography permits a comparatively detailed non-invasive diagnosis of the entire spectrum of congenital heart diseases.     

OBM—0120微处理机在多点焊机中的应用

本文以一台典型的车门玻璃导轨多,点焊机为例、详细地论述了微处理机在多点焊机中的应用。它成功地解决了处于较恶劣环境中的多点焊机的动作程序及自动焊接程序的控制     

维生素E与辐射所致的脂质过氧化作用

根据文献资料和作者的工作讨论了以下的问题:1.照射后VE含量的变化;2.VE缺乏对辐射致的脂质过氧化作用的影响;3.VE对辐射致的脂质过氧化的保护作用;4.VE应用于防治辐射损伤。实验结果表明:照后组织细胞VE含量减低;VE缺乏能增加组织细胞对辐射所致的脂质过氧化作用的敏感性以及VE能有效地抗辐射脂质过氧化作用等。但VE防治辐射损伤的效果则不一致,有阳性的也有阴性的,文中对产生不一致的可能原因进行了分析讨论。     

水酶法提取葵花籽油的研究

采用水酶法提取葵花籽油并对其提取条件进行研究,以脱壳葵花籽为原料,采用复合纤维素酶提取葵花籽油,通过单因素实验及正交试验,研究了料液比、浸提温度、浸提时间、加酶量、酶解温度、酶解时间等因素对出油效率的影响,确定最佳提油工艺参数。结果表明最佳提取条件为料液比1∶10,浸提温度90℃,浸提时间9 h,复合纤维素酶添加量0.10 g,酶解温度50℃,酶解时间1 h,出油效率可达到79.07%。     

响应面法优化碱蓬叶蛋白提取工艺研究

通过单因素试验和响应面爬坡试验,研究碱蓬叶蛋白提取的最佳工艺,试验结果表明:料液比1:4,打浆5 min,滤液pH10,絮凝温度70℃,絮凝时间9 min,在此条件下获得的碱蓬叶蛋白含量为36.75%。     

Business process runtime models: towards bridging the gap between design,enactment, and evaluation of business processes

Information Systems and e-Business Management - Business process management (BPM) broadly covers a lifecycle of four distinct phases: design, configuration, enactment, and analysis and evaluation....     

Identifying and classifying Great Lakes ship transits using a state machine approach

Invasive, aquatic organisms have entered the North America Great Lakes from ships' ballast water, often originating from Europe. Current approaches for preventing the introduction of such organisms in ballast water include ballast water treatment (BWT) or ballast water exchange (BWE). This paper examines BWE, which is conducted in (1) waters >200 nautical miles (nm) from shore, or (2) waters >50?nm from shore and >200?m deep. We used historical records of ships transiting from Europe to the Great Lakes during one year (2014) to determine the duration (in days) that ships were within waters that met the criteria for BWE. Ship paths were classified based upon transitions between location-assigned “states” (e.g., from European waters across the North Atlantic Ocean to North America), and from these state transitions, four types of routes were identified. On average, ships sailing these routes had between 3.5 and 4.7 d to perform BWE in areas >200?nm from shore and 4.7 to 6.2 d when >50?nm from shore and >200-m deep water. Conducting BWE in daylight hours, if deemed necessary for safety, shortened the time window for BWE, especially in winter months, by approximately 50–70%. The state “machine” approach could, in the future, be used to identify ships from specific regions (e.g., ports within waterways at high risk of harboring potentially invasive species). Reshaping the definition of regional boundaries based upon time-of-year, water temperature, or other variables would further refine the ability to identify high-risk transits.