scholarly journals Quality assurance of the high-speed tool at flat grinding

Engineering ◽  
2020 ◽  
pp. 79-88
Author(s):  
A. Skorkin ◽  
O. Kondratyuk ◽  
O. Starchenko ◽  
K. Kamchatna-Stepanova
Keyword(s):  
Quality Assurance ◽  
High Speed

scholarly journals Establishing a quality assurance baseline for radiological protection of patients undergoing diagnostic radiology

2011 ◽  
Vol 15 (3) ◽  
pp. 70 ◽  
Author(s):  
Geoffrey K Korir ◽  
Jeska Sidika Wambani ◽  
Ian K Korir
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Image Quality ◽  
Radiation Exposure ◽  
High Speed ◽  
Quality Criteria ◽  
Patient Dose ◽  
Radiological Protection ◽  
X Ray ◽  
High Speed Film

Background. The wide use of ionising radiation in medical care has resulted in the largest man-made cause of radiation exposure. In recent years, diagnostic departments in Kenya have adapted the high-speed film/screen combination without well-established quality control, objective image quality criteria, and assessment of patient dose. The safety of patients in terms of justification and the as-low-as-reasonably-achievable (ALARA) principle is inadequate without quality assurance measures. Aim. This study assessed the level of film rejects, device performance, image quality and patient dose in 4 representative hospitals using high-speed film/screen combination. Results. The X-ray equipment quality control tests performance range was 67% to 90%, and 63% of the radiographs were of good diagnostic value. The measured prevalent chest examination entrance surface dose (ESD) showed levels above the international diagnostic reference levels (DRLs), while lumbar spine and pelvis examination was the largest source of radiation exposure to patients. Conclusion. The optimisation of patient protection can be achieved with optimally performing X-ray equipment, the application of good radiographic technique, and continuous assessment of radiographic image quality.

Automated High-Speed Film Digitization Method with Quality Assurance

2006 ◽  
Vol 9 (2) ◽  
pp. 241
Author(s):  
E.E. Eric Lee ◽  
Chyi Huang ◽  
Serghei Malkov ◽  
Jeff Wang ◽  
Li Wang
Keyword(s):  
Quality Assurance ◽  
High Speed ◽  
High Speed Film

High Speed Characterization of Pseudomorphic Hemt Structures Using a Very Low Noise Scintillation Detector

1993 ◽  
Vol 37 ◽  
pp. 145-151
Author(s):  
N. Loxley ◽  
S. Cockerton ◽  
B. K. Tanner
Keyword(s):  
Quality Assurance ◽  
Scintillation Detector ◽  
High Speed ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Low Noise ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Dynamic

AbstractWe show that a very low noise, high dynamic range scintillation detector has major advantages over conventional detectors for characterization of pseudomorphic HEMT structures by high resolution X-ray diffraction. We show that the reduced background enables a second modulation period to be detected, enabling the thickness and composition to be determined independently. Using a conventional X-ray generator and diffractometer we demonstrate that, in a single scan taking only 10 seconds, we are able to obtain sufficiently good data to provide quality assurance.

Medical Informatics in Ensuring Quality Control of Cancer Care: Promising Directions of Development

2021 ◽  
Vol 76 (5S) ◽  
pp. 554-559
Author(s):  
Dmitry A. Andreev ◽  
Aleksandr A. Zavyalov
Keyword(s):  
Quality Assurance ◽  
Cancer Care ◽  
High Speed ◽  
Care Quality ◽  
Primary Data ◽  
Malignant Neoplasms ◽  
Feedback Systems ◽  
New Era ◽  
Safety Assurance ◽  
The Individual

The surge in development of oncology informatics facilitates the accommodation of next generation digital approaches into cancer care quality assurance workflow. Hence, the remarkable progress in clinical informatics might shape the construction of the extremely efficient model of quality assurance in real hospital practice. This review reflects the description of innovative approaches to automated assessments of the cancer care quality in real world. The PubMed (Medline) database GOOGLE were used to search for helpful information. Ultimately, 35 sources were included in this review. The processing of big data variables possessing plenty characteristics and integration of those into the unified cancer care databases could give the unbelievably valuable results connecting the diagnostic and treatment indicators with the clinical outcomes especially at patient level. The newly emerging information technology tools include the rapid feedback systems to deliver the results of automated appraisal of care quality to the individual physicians and caregivers. Moreover, such digital systems as CancerLinQ and the CAPTIVE infrastructure can be considered as vigorous examples of state-of-the-art technologies that were trialed in cancer care settings with positive results. This paper reviews some of the elements mentioned above. Clinical oncology informatics has opened a new era in improving the practical instruments for care efficiency and safety assurance. The issues of legal policy for automated data processing using artificial intelligence are actualized. The methodology utility depends mostly on the characteristics of primary data collected, analytical algorithms, software design, and properties of high-speed computing hardware. Integration of all data sources together with brand-new computing systems is an obligatory condition for consistent rolling-out of comprehensive digital cancer care network to achieve the better outcomes in the tough battle with malignant neoplasms.

Microfabrication research at the National Submicron Facility

1983 ◽  
Vol 41 ◽  
pp. 86-89
Author(s):  
E.D. Wolf
Keyword(s):  
Integrated Circuits ◽  
Particle Physics ◽  
High Speed ◽  
New Technology ◽  
High Energy ◽  
High Energy Particle ◽  
New Science ◽  
Wide Range ◽  
Intermediate Domain ◽  
Circuit Function

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

The on-line use of histogram data for high-speed correction and alignment of electron microscope images

1984 ◽  
Vol 42 ◽  
pp. 556-557
Author(s):  
William Krakow
Keyword(s):  
Power Spectrum ◽  
High Speed ◽  
Direct Memory Access ◽  
Digital Television ◽  
Contrast Transfer Function ◽  
The Past ◽  
High Resolution Tem ◽  
On Line ◽  
Correction Of Astigmatism ◽  
The Fourier Transform

In the past few years on-line digital television frame store devices coupled to computers have been employed to attempt to measure the microscope parameters of defocus and astigmatism. The ultimate goal of such tasks is to fully adjust the operating parameters of the microscope and obtain an optimum image for viewing in terms of its information content. The initial approach to this problem, for high resolution TEM imaging, was to obtain the power spectrum from the Fourier transform of an image, find the contrast transfer function oscillation maxima, and subsequently correct the image. This technique requires a fast computer, a direct memory access device and even an array processor to accomplish these tasks on limited size arrays in a few seconds per image. It is not clear that the power spectrum could be used for more than defocus correction since the correction of astigmatism is a formidable problem of pattern recognition.

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