Some Optical Test Methods Used In Performance Evaluation Of HIPPARCOS Telescope

1986 ◽  
Author(s):  
G. Ratier ◽  
J. J. Arnoux ◽  
M. Fruit
Keyword(s):  
Performance Evaluation ◽  
Test Methods ◽  
Optical Test

Characterization of Lean Burn Module Air Blast Pilot Injector With Laser Techniques

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
U. Meier ◽  
S. Freitag ◽  
J. Heinze ◽  
L. Lange ◽  
E. Magens ◽  
...  
Keyword(s):  
Flow Field ◽  
Soot Formation ◽  
Test Methods ◽  
Oh Radicals ◽  
Main Stage ◽  
Fuel Injector ◽  
Lean Burn ◽  
Fuel Ratio ◽  
Optical Test ◽  
Planar Laser

For lean burn combustor development in low emission aero-engines, the pilot stage of the fuel injector plays a key role with respect to stability, operability, NOx emissions, and smoke production. Therefore it is of considerable interest to characterize the pilot module in terms of pilot zone mixing, fuel placement, flow field, and interaction with the main stage. This contribution focuses on the investigation of soot formation during pilot-only operation. Optical test methods were applied in an optically accessible single sector rig at engine idle conditions. Using planar laser-induced incandescence (LII), the distribution of soot and its dependence on air/fuel ratio, as well as geometric injector parameters, was studied. The data shows that below a certain air/fuel ratio, an increase of soot production occurs. This is in agreement with smoke number measurements in a standard single sector flame tube rig without optical access. Reaction zones were identified using chemiluminescence of OH radicals. In addition, the injector flow field was investigated with PIV. A hypothesis regarding the mechanism of pilot smoke formation was made based on these findings. This along with further investigations will form the basis for developing strategies for smoke improvement at elevated pilot-only conditions.

No 27 OPTICAL TEST METHODS FOR EYE PROTECTORS

2009 ◽  
Vol 62 (S164) ◽  
pp. 38-38
Author(s):  
M. HOIKKALA
Keyword(s):  
Test Methods ◽  
Optical Test

scholarly journals A Study on Immunological and Molecular Genetic Test Methods of Bacterial Sexually Transmitted Diseases Reagents

2017 ◽  
Author(s):  
Geun Soo Kim ◽  
San Kim ◽  
Hye Youn Han ◽  
Eunji Kwon
Keyword(s):  
Performance Evaluation ◽  
Sexually Transmitted Diseases ◽  
Medical Device ◽  
Medical Devices ◽  
Test Methods ◽  
Test Method ◽  
Quality And Safety ◽  
Sexually Transmitted ◽  
In Vitro Diagnosis

Chlamydia trachomatis is usally isolated only from humans and is often infected together with other sexually transmitted diseases(STD). C. trachomatis is a serious disease which infects 500 million people per year globally and causes blindness in 7 to 9 million people per year due to continuous infection. Thus, it is urgent to develop (draft) guidelines on the test methods for performance evaluation of medical devices for in vitro diagnosis of bacterial STD(C. trachomatis) based on molecular diagnosis. In this study, in reference to the U.S. FDA Guidance, has derived essential methods for testing performance which are applicable to medical device for in vitro diagnosis of bacterial STD which are used in the field of melecular diagnosis. Because of the establish of the test method for performance evaluation of medical devices, it could provide consistent performance evaluation standards for the approval and examination of products, promote the improvement of the quality and safety of products. This will contribute to the development of the quality and safety of products. This will contribute to the development of medical device for in vitro diagnosis in Korea

Nitrate electroreduction: mechanism insight, in situ characterization, performance evaluation, and challenges

2021 ◽  
Author(s):  
Yuting Wang ◽  
Changhong Wang ◽  
Mengyang Li ◽  
Yifu Yu ◽  
Bin Zhang
Keyword(s):  
Performance Evaluation ◽  
Reaction Mechanism ◽  
Test Methods ◽  
Standard Test ◽  
Kinetics Analysis ◽  
In Situ Characterization ◽  
Theoretical Simulation ◽  
Evaluation Parameters

In this review, we summarize the reaction mechanism, in situ characterization, theoretical simulation, and kinetics analysis. The performance evaluation parameters, standard test methods, and an outlook for nitrate electroreduction are discussed.

A New Approach for Face Recognition Performance Evaluation for Robot Using LED Monitor

2014 ◽  
Vol 548-549 ◽  
pp. 939-942 ◽  
Author(s):  
Mi Young Cho ◽  
Young Sook Jeong ◽  
Byung Tae Chun
Keyword(s):  
Performance Evaluation ◽  
Face Recognition ◽  
Evaluation Method ◽  
Recognition Performance ◽  
Test Methods ◽  
Human Robot Interaction ◽  
Point Of View ◽  
Service Robots ◽  
Face Detection And Recognition ◽  
Performance Evaluation Method

With the increasing of service robots, human-robot interaction for natural communication between user and robot is becoming more and more important. Especially, face recognition is a key issue of HRI. Even though robots mainly use face detection and recognition to provide various services, it is still difficult to guarantee of performance due to insufficient test methods in point of view robot. So, we propose a new performance evaluation method for robot using LED monitor.

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