ISSN:0309-1902    

DOI:10.3109/03091909209030773

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

Recently, various laser Doppler flowmeter (LDF) systems have been used for evaluation of tissue microcirculation. However, indifference has often been shown by doctors and researchers regarding their sampling volume, stability and accuracy, which differ with various optical arrangements. In this study we evaluated the characteristics of three LDF systems with different optical arrangements. The sampling depths in both blood and tissue were found to differ with the different optical arrangements, although the laser power emitted from the probes is nearly equivalent. Each depth significantly changed at haematocrits between 5.0 and 36.5%. The stability and the accuracy of the measurements also differed. In the practical case of tissue microcirculation it is important to measure blood flow with an understanding of the material differences in the characteristics of the LDF systems.

ISSN:0309-1902    

DOI:10.3109/03091909209030774

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

There are several approaches to producing communication aids for people with disabilities. The system described here takes the approach of utilizing as much mainstream hardware as possible, and adapting it with some modular software tools which have been designed to facilitate the building of customized symbol communication systems. The target audience are clients who are symbol users and/or have a speech impairment. The system provides several levels of screens, each of which can contain grids of scalable icons. A number of input methods are provided including keyboard, switch, mouse and touch-screen. Digitized and/or text to speech synthesis can be used for reinforcement of selections and for communication. The structure of the system is discussed and initial feedback from the first field trials is presented.

ISSN:0309-1902    

DOI:10.3109/03091909209030775

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

A cylindrical device is described for placement within a domestic microwave oven, in order to achieve rapid thawing of biological materials, including plasma, located within the cylinder. The device is economical to fabricate within standard workshop facilities. It secures uniform microwave exposure and continuous mixing of material by rotation of the cylinder in two planes, entraining the motion of the oven drive spindle by a very simple system of fictional gears. Data are presented on the accuracy of this system, and on some important points relating to its use both as a calibration model and a research tool. Such research may eventually enable this system to provide a cheap and reliable option for thawing therapeutic materials for clinical use.

ISSN:0309-1902    

DOI:10.3109/03091909209030776

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030778

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030779

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030780

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030781

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor