快速进出水煤浆用调配罐的设计与应用

水煤浆是一种煤基流体燃料,是煤炭深加工的新型产品之一。它既是一种新型洁净的环保材料,又具有良好的流动性,因此得到了广泛的使用。设计了一种快速进出水煤浆用调配罐,从而使得水煤浆进出调配罐效率提高,较好的解决了水煤浆制备过程中出现的问题,具有极佳的推广意义。     

Formal Approach to Workflow Application Fragmentations Over Cloud Deployment Models

Workflow management technologies have been dramatically improving their deployment architectures and systems along with the evolution and proliferation of cloud distributed computing environments. Especially, such cloud computing environments ought to be providing a suitable distributed computing paradigm to deploy very large-scale workflow processes and applications with scalable on-demand services. In this paper, we focus on the distribution paradigm and its deployment formalism for such very large-scale workflow applications being deployed and enacted across the multiple and heterogeneous cloud computing environments. We propose a formal approach to vertically as well as horizontally fragment very large-scale workflow processes and their applications and to deploy the workflow process and application fragments over three types of cloud deployment models and architectures. To concretize the formal approach, we firstly devise a series of operational situations fragmenting into cloud workflow process and application components and deploying onto three different types of cloud deployment models and architectures. These concrete approaches are called the deployment-driven fragmentation mechanism to be applied to such very large-scale workflow process and applications as an implementing component for cloud workflow management systems. Finally, we strongly believe that our approach with the fragmentation formalisms becomes a theoretical basis of designing and implementing very large-scale and maximally distributed workflow processes and applications to be deployed on cloud deployment models and architectural computing environments as well.     

山桐子产业在我国的开发利用情况

山桐子作为优良的木本油料树种,近年来受到越来越多的关注。论述了山桐子产业在我国的开发利用情况,主要包括山桐子国家扶持政策、良种选育、人工栽培、山桐子油食用安全性、山桐子油加工工艺及深加工应用情况,以期为山桐子产业的发展提供参考。     

Visualization analysis of heart diseases using two‐dimensional electrocardiogram sequences

During the last years, there have been large advances in the understanding of cardiac mechanics, and in particular shape, motion and deformation. However, it is important to comprehend how these features interrelate and how they can be interpreted to refine the clinical diagnosis. The goal of our study is to illustrate the use of two‐dimensional ultrasound cardiac motion sequences on some typical cardiac pathologies. The method is applied to preprocessed data from two‐dimensional ultrasound sequences of four different subjects, namely, two healthy volunteers, one patient with left ventricular mechanical dyssynchrony from the left bundle branch block, and one patient with hypertrophic cardiomyopathy. The interpretation based on these features is corroborated with other analyzing techniques such as electrocardiogram and visual interpretation by experienced clinical observers. The proposed method realizes a computer program, which allows the user to easily obtain and visualize information about myocardial shape, motion (displacement and velocity), and deformation (strain) along the left ventricle myocardium wall during the cardiac cycle.     

聚六亚甲基胍杀菌剂的制备及其在海洋油田中的应用

以己二胺和盐酸胍为原料,合成一种聚六亚甲基胍杀菌剂(BHS-49)。与其他主流杀菌剂进行对比,侧重研究其杀菌能力,BHS-49加注质量浓度30mg/L时,SRB含量最低,平均值为25.5个/mL。在海上油田开展现场试验,结果显示,各级检测点细菌含量明显降低,FPSO缓冲罐出口细菌含量降低至6个/mL。同现场在用杀菌剂BHS-29相比,SRB含量降低76%,满足排放要求。与此同时,杀菌剂BHS-49加注期间,现场流程稳定,各监测点出口水质未出现波动。     

PLC与单片机之间的串行通信及应用

在工业自动化控制领域,较为重要的内容就是PLC和单元机之间的远距离控制,并且在自控系统设计过程中,经常遇到的难题就是PLC和单片机之间远距离通信,基于PLC和单片机两者优势充分发挥的基础上,能够确保PLC和单片机之间串行通信的良好实现。本文基于实际情况的基础上,通过对现阶段较为常见且应用较为广泛的单片机进行分析探讨。     

Application of MSD prevention practices by nursing staff working in healthcare settings

ObjectiveThe objective of this article is to examine the application of MSD prevention practices among nursing staff and to identify organizational factors that may or may not support their application.MethodsWe measured the application of prevention practices and its determinants by means of a questionnaire filled out by 399 nurses and nursing staff in Canada. A qualitative component was conducted with two focus groups in order to validate and enrich the interpretation of the survey results.ResultsResults show that most respondents “often” (4) apply MSD prevention practices in their daily professional tasks. Significant differences were observed based on position, mission of the institution, degree, and training.ConclusionsThe characteristics of the nursing staff (position, training, etc.) and the specificities of the setting must be taken into consideration in MSD prevention interventions for nursing staff.     

PBL教学模式在“软件工程”课程教学中的应用

由于学科特性与教学要求,“软件工程”课程教学对实践性和系统性的要求极高。PBL教学模式作为一种自主式教学的新型模式,在教育领域受到广泛关注。文章基于PBL教学模式的特点及优势,结合“软件工程”课程教学改革趋势及教学实践中面临的主要困境,系统分析了PBL教学模式应用于“软件工程”课程教学的途径,以期为促进“软件工程”的课程教学改革及教学质量提高提供参考及借鉴。     

惯性导航设备升沉数据测试系统研究

研制了一套基于STM32单片机与单轴摇摆台的测试系统,利用固定圆心、固定半径条件下的圆内三角形关系,通过拉线传感器采集单轴摇摆台复合运动中的升沉数据;同时,对惯性导航设备输出的升沉数据进行采集与处理。对测试系统输出的升沉数据进行了验证,实验结果表明:该测试系统的测试数据准确合理,可实现对惯性导航设备升沉参数的动态测试,弥补了现有同类测试系统的结构复杂、量程小等不足。     

网络与通信技术在计算机控制中的应用

在社会经济高速发展的支持下,我国网络与通信技术高速发展,并且在发展中逐渐实现了两种技术的结合应用,大大提升了网络与通信技术的应用价值。文章对网络与通信技术进行分析,研究网络与通信技术在计算机控制中应用的时代背景和具体应用,并对其未来发展进行了概述,以促进计算机控制领域的科学化发展。