WorldWideScience

Sample records for included quality control

  1. Optimage central organised image quality control including statistics and reporting

    International Nuclear Information System (INIS)

    Jahnen, A.; Schilz, C.; Shannoun, F.; Schreiner, A.; Hermen, J.; Moll, C.

    2008-01-01

    Quality control of medical imaging systems is performed using dedicated phantoms. As the imaging systems are more and more digital, adequate image processing methods might help to save evaluation time and to receive objective results. The developed software package OPTIMAGE is focusing on this with a central approach: On one hand, OPTIMAGE provides a framework, which includes functions like database integration, DICOM data sources, multilingual user interface and image processing functionality. On the other hand, the test methods are implemented using modules which are able to process the images automatically for the common imaging systems. The integration of statistics and reporting into this environment is paramount: This is the only way to provide these functions in an interactive, user-friendly way. These features enable the users to discover degradation in performance quickly and document performed measurements easily. (authors)

  2. 78 FR 61389 - Sanyo Solar of Oregon, LLC, Wafer Slicing and Quality Control Operations, Including On-Site...

    Science.gov (United States)

    2013-10-03

    ..., LLC, Wafer Slicing and Quality Control Operations, Including On-Site Leased Workers From Brown and... Quality Control Operations, Salem, Oregon, including on-site leased workers from Brown and Dunton, Inc... and included workers who supplied quality control and support functions. The company reports that...

  3. Sci-Fri AM: Quality, Safety, and Professional Issues 01: CPQR Technical Quality Control Suite Development including Quality Control Workload Results

    International Nuclear Information System (INIS)

    Malkoske, Kyle; Nielsen, Michelle; Brown, Erika; Diamond, Kevin; Frenière, Normand; Grant, John; Pomerleau-Dalcourt, Natalie; Schella, Jason; Schreiner, L. John; Tantot, Laurent; Barajas, Eduardo Villareal; Bissonnette, Jean-Pierre

    2016-01-01

    A close partnership between the Canadian Partnership for Quality Radiotherapy (CPQR) and the Canadian Organization of Medical Physicist’s (COMP) Quality Assurance and Radiation Safety Advisory Committee (QARSAC) has resulted in the development of a suite of Technical Quality Control (TQC) Guidelines for radiation treatment equipment, that outline specific performance objectives and criteria that equipment should meet in order to assure an acceptable level of radiation treatment quality. The framework includes consolidation of existing guidelines and/or literature by expert reviewers, structured stages of public review, external field-testing and ratification by COMP. The adopted framework for the development and maintenance of the TQCs ensures the guidelines incorporate input from the medical physics community during development, measures the workload required to perform the QC tests outlined in each TQC, and remain relevant (i.e. “living documents”) through subsequent planned reviews and updates. This presentation will show the Multi-Leaf Linear Accelerator document as an example of how feedback and cross-national work to achieve a robust guidance document. During field-testing, each technology was tested at multiple centres in a variety of clinic environments. As part of the defined feedback, workload data was captured. This lead to average time associated with testing as defined in each TQC document. As a result, for a medium-sized centre comprising 6 linear accelerators and a comprehensive brachytherapy program, we evaluate the physics workload to 1.5 full-time equivalent physicist per year to complete all QC tests listed in this suite.

  4. Sci-Fri AM: Quality, Safety, and Professional Issues 01: CPQR Technical Quality Control Suite Development including Quality Control Workload Results

    Energy Technology Data Exchange (ETDEWEB)

    Malkoske, Kyle; Nielsen, Michelle; Brown, Erika; Diamond, Kevin; Frenière, Normand; Grant, John; Pomerleau-Dalcourt, Natalie; Schella, Jason; Schreiner, L. John; Tantot, Laurent; Barajas, Eduardo Villareal; Bissonnette, Jean-Pierre [Royal Victoria Hospital, Trillium Health Partners, CPQR, Juravinski Cancer Centre, CIUSSS MCQ - CHAUR, Cape Breton Health Care Complex, Centre d’oncologie Dr. Léon-Richard / Dr. Léon Richard Oncology Centre, QEII Health Sciences Centre, Cancer Centre of Southeastern Ontario, Hôpital Maisonneuve-Rosemont, Tom Baker Cancer Centre, Princess Margaret Cancer Centre (Canada)

    2016-08-15

    A close partnership between the Canadian Partnership for Quality Radiotherapy (CPQR) and the Canadian Organization of Medical Physicist’s (COMP) Quality Assurance and Radiation Safety Advisory Committee (QARSAC) has resulted in the development of a suite of Technical Quality Control (TQC) Guidelines for radiation treatment equipment, that outline specific performance objectives and criteria that equipment should meet in order to assure an acceptable level of radiation treatment quality. The framework includes consolidation of existing guidelines and/or literature by expert reviewers, structured stages of public review, external field-testing and ratification by COMP. The adopted framework for the development and maintenance of the TQCs ensures the guidelines incorporate input from the medical physics community during development, measures the workload required to perform the QC tests outlined in each TQC, and remain relevant (i.e. “living documents”) through subsequent planned reviews and updates. This presentation will show the Multi-Leaf Linear Accelerator document as an example of how feedback and cross-national work to achieve a robust guidance document. During field-testing, each technology was tested at multiple centres in a variety of clinic environments. As part of the defined feedback, workload data was captured. This lead to average time associated with testing as defined in each TQC document. As a result, for a medium-sized centre comprising 6 linear accelerators and a comprehensive brachytherapy program, we evaluate the physics workload to 1.5 full-time equivalent physicist per year to complete all QC tests listed in this suite.

  5. 77 FR 63873 - Johnson Controls, Inc. Including On-Site Leased Workers of Valley Staffing and AZ Quality Hudson...

    Science.gov (United States)

    2012-10-17

    ... workers of Johnson Controls, Inc., including on-site leased workers from Valley Staffing, Hudson..., Wisconsin location of Johnson Controls, Inc. The Department has determined that these workers were sufficiently under the control of the subject firm to be considered leased workers. Based on these findings...

  6. quality control

    International Nuclear Information System (INIS)

    Skujina, A.; Purina, S.; Riekstina, D.

    1999-01-01

    The optimal objects: soils, spruce needles and bracken ferns were found for the environmental monitoring in the regions of possible radioactive contamination - near SalaspiIs nuclear reactor and Ignalina nuclear power plant. The determination of Sr-90 was based on the radiochemical separation of Sr-90 (=Y-90) by HDEHP extraction and counting the Cerenkov radiation. The quality control of the results was carried out. (authors)

  7. Quality Management, Quality Assurance and Quality Control in Blood Establishments

    OpenAIRE

    Bolbate, N

    2008-01-01

    Quality terms and the roots of the matter are analyzed according to European Committee’s recommendations. Essence of process and product quality control as well as essence of quality assurance is described. Quality system’s structure including quality control, quality assurance and management is justified in the article.

  8. Quality assurance and quality control

    International Nuclear Information System (INIS)

    Kaden, W.

    1986-01-01

    General preconditions and methods for QA work in the nuclear field are analysed. The application of general QA principles to actual situations is illustrated by examples in the fields of engineering and of the manufacturing of mechanical and electrical components. All QA measures must be fitted to the complexity and relevance of the work steps, which are under consideration. The key to good product quality is the control of working processes. The term 'controlled process' is discussed in detail and examples of feed back systems are given. The main QA measures for the operation of nuclear power plants include the establishment of a Quality Assurance Program, training and qualification of personnel, procurement control, inspection and tests, reviews and audits. These activities are discussed. (orig.)

  9. Quality control of dosemeters

    International Nuclear Information System (INIS)

    Mendes, L.

    1984-01-01

    Nuclear medicine laboratories are required to assay samples of radioactivity to be administered to patients. Almost universally, these assays are acomplished by use of a well ionization chamber isotope calibrator. The Instituto de Radioprotecao e Dosimetria (Institute for Radiological Protection and Dosimetry) of the Comissao Nacional de Energia Nuclear (National Commission for Nuclear Energy) is carrying out a National Quality Control Programme in Nuclear Medicine, supported by the International Atomic Energy Agency. The assessment of the current needs and practices of quality control in the entire country of Brazil includes Dose Calibrators and Scintilation Cameras, but this manual is restricted to the former. Quality Control Procedures for these Instruments are described in this document together with specific recommendations and assessment of its accuracy. (Author) [pt

  10. SPECT quality control tests

    International Nuclear Information System (INIS)

    Robilotta, C.C.; Rebelo, M.F.S.; Oliveira, M.A.; Abe, R.

    1987-01-01

    Quality control tests of tomographic system composed by a rotatory chamber (CGR Gammatomome T-9000) and a microcomputer are presented. Traditional quality control tests for scintilation chambers and specific tests for tomographic systems are reported. (M.A.C.) [pt

  11. VGI QUALITY CONTROL

    Directory of Open Access Journals (Sweden)

    C. C. Fonte

    2015-08-01

    Full Text Available This paper presents a framework for considering quality control of volunteered geographic information (VGI. Different issues need to be considered during the conception, acquisition and post-acquisition phases of VGI creation. This includes items such as collecting metadata on the volunteer, providing suitable training, giving corrective feedback during the mapping process and use of control data, among others. Two examples of VGI data collection are then considered with respect to this quality control framework, i.e. VGI data collection by National Mapping Agencies and by the most recent Geo-Wiki tool, a game called Cropland Capture. Although good practices are beginning to emerge, there is still the need for the development and sharing of best practice, especially if VGI is to be integrated with authoritative map products or used for calibration and/or validation of land cover in the future.

  12. Commercial jet fuel quality control

    Energy Technology Data Exchange (ETDEWEB)

    Strauss, K.H.

    1995-05-01

    The paper discusses the purpose of jet fuel quality control between the refinery and the aircraft. It describes fixed equipment, including various types of filters, and the usefulness and limitations of this equipment. Test equipment is reviewed as are various surveillance procedures. These include the Air Transport Association specification ATA 103, the FAA Advisory Circular 150/5230-4, the International Air Transport Association Guidance Material for Fuel Quality Control and Fuelling Service and the Guidelines for Quality Control at Jointly Operated Fuel Systems. Some past and current quality control problems are briefly mentioned.

  13. Quality assurance and quality control

    International Nuclear Information System (INIS)

    Anon.

    1987-01-01

    The practice of nuclear diagnostic imaging requires an appropriate quality assurance program to attain high standards of efficiency and reliability. The International Atomic Energy Agency defines the term quality assurance as ''the closeness with which the outcome of a given procedure approaches some ideal, free from all errors and artifacts.'' The term quality control is used in reference to the specific measures taken to ensure that one particular aspect of the procedure is satisfactory. Therefore, quality assurance is a hospital-wide concept that should involve all aspects of clinical practice. Quality control is concerned with the submission of requests for procedures; the scheduling of patients; the preparation and dispensing of radiopharmaceuticals; the protection of patients, staff, and the general public against radiation hazards and accidents caused by radioactive materials or by faulty equipment; the setting up, use, and maintenance of electronic instruments; the methodology of the actual procedures; the analysis and interpretation of data; the reporting of results; and, finally, the keeping of records. The chapter discusses each of these areas

  14. Quality control in radiotherapy

    International Nuclear Information System (INIS)

    Batalla, A.

    2009-01-01

    The authors discuss the modalities and periodicities of internal quality control on radiotherapy installations. They indicate the different concerned systems and the aspects and items to be controlled (patient and personnel security, apparatus mechanical characteristics, beam quality, image quality, isodose and irradiation duration calculation, data transfer). They present the measurement instruments and tools used for the mechanical controls, dose measurement, beam homogeneity and symmetry, anatomic data acquisition systems, and dose distribution and control imagery calculation

  15. Quality Control Applications

    CERN Document Server

    Chorafas, Dimitris N

    2013-01-01

    Quality control is a constant priority in electrical, mechanical, aeronautical, and nuclear engineering – as well as in the vast domain of electronics, from home appliances to computers and telecommunications. Quality Control Applications provides guidance and valuable insight into quality control policies; their methods, their implementation, constant observation and associated technical audits. What has previously been a mostly mathematical topic is translated here for engineers concerned with the practical implementation of quality control. Once the fundamentals of quality control are established, Quality Control Applications goes on to develop this knowledge and explain how to apply it in the most effective way. Techniques are described and supported using relevant, real-life, case studies to provide detail and clarity for those without a mathematical background. Among the many practical examples, two case studies dramatize the importance of quality assurance: A shot-by-shot analysis of the errors made ...

  16. Software product quality control

    CERN Document Server

    Wagner, Stefan

    2013-01-01

    Quality is not a fixed or universal property of software; it depends on the context and goals of its stakeholders. Hence, when you want to develop a high-quality software system, the first step must be a clear and precise specification of quality. Yet even if you get it right and complete, you can be sure that it will become invalid over time. So the only solution is continuous quality control: the steady and explicit evaluation of a product's properties with respect to its updated quality goals.This book guides you in setting up and running continuous quality control in your environment. Star

  17. Frontiers in statistical quality control

    CERN Document Server

    Wilrich, Peter-Theodor

    2004-01-01

    This volume treats the four main categories of Statistical Quality Control: General SQC Methodology, On-line Control including Sampling Inspection and Statistical Process Control, Off-line Control with Data Analysis and Experimental Design, and, fields related to Reliability. Experts with international reputation present their newest contributions.

  18. Principles and Practices for Quality Assurance and Quality Control

    Science.gov (United States)

    Jones, Berwyn E.

    1999-01-01

    Quality assurance and quality control are vital parts of highway runoff water-quality monitoring projects. To be effective, project quality assurance must address all aspects of the project, including project management responsibilities and resources, data quality objectives, sampling and analysis plans, data-collection protocols, data quality-control plans, data-assessment procedures and requirements, and project outputs. Quality control ensures that the data quality objectives are achieved as planned. The historical development and current state of the art of quality assurance and quality control concepts described in this report can be applied to evaluation of data from prior projects.

  19. Checking quality control?

    DEFF Research Database (Denmark)

    Brodersen, Lars

    2005-01-01

    How is quality control doing within the community of GIS, web-services based on geo-information, GI etc.?......How is quality control doing within the community of GIS, web-services based on geo-information, GI etc.?...

  20. Telerobotic Control Architecture Including Force-Reflection

    National Research Council Canada - National Science Library

    Murphy, Mark

    1998-01-01

    This report describes the implementation of a telerobotic control architecture to manipulate a standard six-degree-of-freedom robot via a unique seven-degree-of-freedom force-reflecting exoskeleton...

  1. Quality control of radiodiagnostics

    International Nuclear Information System (INIS)

    Alonso Diaz, M.; Castaneda Arronte, M.J.; Matorras Galan, P.; Diaz-Caneja Rodriguez, N.; Gutierrez Diaz Velarde, I.

    1993-01-01

    Since May 1990, a program of quality control of diagnostic X-ray equipment is underway in the University Hospital Marques de Valdecilla. This includes the design and application of measuring specifications and procedures corresponding to the different parameters of the equipment. The specified values are presented, as are those obtained for geometric and exposition parameters using the equipment. The specifications for the geometric parameters are fulfilled in an large proportion (between 52 and 86%) of the units, and the rest can easily be adjusted. However, 85% of the units can be made to operate with a field larger than that of the screen of the image monitor and approximately half of them can operate at a shorter focus-to-patient distance than that specified. With respect to the exposition parameters, in general, these units do not fulfill the specifications and their behavior is not uniform. The results obtained indicate that the equipment studied could be made to comply with the proposed specifications if a Maintenance Program were initiated in coordination with that of Quality Control. (Author)

  2. Quality control of radiopharmaceuticals

    International Nuclear Information System (INIS)

    Verdera, E.S.

    1994-01-01

    The quality control of radiopharmaceuticals is based in physics, physics-chemical and biological controls. Between the different controls can be enumerated the following: visual aspect,side, number of particle beams,activity,purity,ph,isotonicity,sterility,radioinmunoessay,toxicity,stability and clinical essay

  3. Quality Control in construction.

    Science.gov (United States)

    1984-01-01

    behavioral scientists. In 1962, Dr. Kaoru Ishikawa gave shape to the form of training which featured intradepartmental groups of ten or so workers seated...and Japanese circles bears closer scrutiny. 4.3.1 Japanese Ingredients of Quality The founder of quality circles, Dr. Kaoru Ishikawa , gives six...around 51 a table; hence the name Quality Control Circle. 4 Dr. 0 Ishikawa was an engineering professor at Tokyo University, and the circles were

  4. Quality control of radiopharmaceuticals

    International Nuclear Information System (INIS)

    Kristensen, K.

    1981-01-01

    Quality assurance was introduced in the pharmaceutical field long before it was used in many other areas, and the term quality control has been used in a much broader sense than merely analytical quality control. The term Good Manufacturing Practice (GMP) has been used to describe the system used for producing safe and effective drugs of a uniform quality. GMP has also been used for the industrial production of radiopharmaceuticals. For the preparation and control of radiopharmaceuticals in hospitals a similar system has been named Good Radiopharmacy Practice (GRP). It contains the same elements as GMP but takes into account the special nature of this group of drugs. Data on the assessment of the quality of radiopharmaceuticals in relation to present standards are reviewed. The general conclusion is that the quality of radiopharmaceuticals appears comparable to that of other drugs. It seems possible to establish the production of radiopharmaceuticals, generators and preparation kits in such a way that analytical control of the final product at the hospital may be limited provided the final preparation work is carried out in accordance with GRP principles. The elements of GRP are reviewed. (author)

  5. Quality control in haemostasis.

    Science.gov (United States)

    Capel, P; Chatelain, B; Leclerq, R; Lust, A; Masure, R; Arnout, J

    1992-01-01

    Laboratory investigation of the haemostatic system deserves particular procedures in the quality control of analytical variables as well as preanalytical variables. This paper reviews the precautions that have to be taken in the blood prelevement, the transport of the tubes and the performance of the laboratory tests aimed to investigate the haemostatic system in order to obtain reliable results.

  6. Ocean Data Quality Control

    Science.gov (United States)

    2011-11-18

    the aero- sol at the coincident time and location of the satellite SST retrievals. This informa- tion is available in the daytime for the anti-solar...are of the same form, such as probabilities or standard normal deviates. A quality control decision-making algorithm in use at the U.S. Navy oceano

  7. Related regulation of quality control of industrial products

    International Nuclear Information System (INIS)

    1983-04-01

    This book introduce related regulation of quality control of industrial products, which includes regulations of industrial products quality control, enforcement ordinance of industrial products quality control, enforcement regulation of quality control of industrial products, designated items with industrial production quality indication, industrial production quality test, and industrial production quality test organization and management tips of factory quality by grade.

  8. 2. Product quality control and assurance system

    International Nuclear Information System (INIS)

    1990-01-01

    Product quality control and assurance are dealt with in relation to reliability in nuclear power engineering. The topics treated include product quality control in nuclear power engineering, product quality assurance of nuclear power plant equipment, quality assurance programs, classification of selected nuclear power equipment, and standards relating to quality control and assurance and to nuclear power engineering. Particular attention is paid to Czechoslovak and CMEA standards. (P.A.). 2 figs., 1 tab., 12 refs

  9. Quality control of mammography

    International Nuclear Information System (INIS)

    Hering, K.G.

    1986-01-01

    Random checks of mammograms allow to clearly assess quality controls concerning correct application and operation of the radiographic system indicated by rich contrast in breast tissue images, complete imaging of the mammary parenchyma, freedom from blurs due to motion, efficient breast compression, correct film labelling and perfect maintenance of the film screen system. In addition to these subjective assessments, the following points should be considered when using objective measurement procedures and phantoms: Testing the correct function of X-ray and radiographic equipment by means of test specimens to measure KV standard (KV=Association of German Panel Doctors), mAS and automatic exposure timer; comparing dose and density to initial values and checking film processing by using a sensitometer. Quality assurance handling varies from one KV to the next. That is why the users need to obtain the guidelines of the respective KV relative to radiological quality assurance and to proceed according to these. (orig.) [de

  10. Quality control of imaging devices

    International Nuclear Information System (INIS)

    Soni, P.S.

    1992-01-01

    Quality assurance in nuclear medicine refers collectively to all aspects of a nuclear medicine service. It would include patient scheduling, radiopharmaceutical preparation and dispensing, radiation protection of patients, staff and general public, preventive maintenance and the care of instruments, methodology, data interpretation and records keeping, and many other small things which contribute directly or indirectly to the overall quality of a nuclear medicine service in a hospital. Quality Control, on the other hand, refers to a signal component of the system and is usually applied in relation to a specific instrument and its performance

  11. Quality control of intelligence research

    International Nuclear Information System (INIS)

    Lu Yan; Xin Pingping; Wu Jian

    2014-01-01

    Quality control of intelligence research is the core issue of intelligence management, is a problem in study of information science This paper focuses on the performance of intelligence to explain the significance of intelligence research quality control. In summing up the results of the study on the basis of the analysis, discusses quality control methods in intelligence research, introduces the experience of foreign intelligence research quality control, proposes some recommendations to improve quality control in intelligence research. (authors)

  12. Quality control for dose calibrators

    International Nuclear Information System (INIS)

    Mendes, L.C.G.

    1984-01-01

    Nuclear medicine laboratories are required to assay samples of radioactivity to be administered to patients. Almost universally, these assays are accomplished by use of a well ionization chamber isotope calibrator. The Instituto de Radioprotecao e Dosimetria (Institute for Radiological Protection and Dosimetry) of the Comissao Nacional de Energia Nuclear (National Commission for Nuclear Energy) is carrying out a National Quality Control Programme in Nuclear Medicine, supported by the International Atomic Energy Agency. The assessment of the current needs and practices of quality control in the entire country of Brazil includes Dose Calibrators and Scintillation Cameras, but this manual is restricted to the former. Quality Control Procedures for these Instruments are described in this document together with specific recommendations and assessment of its accuracy. (author)

  13. Shipping/Receiving and Quality Control

    Data.gov (United States)

    Federal Laboratory Consortium — Shipping receiving, quality control, large and precise inspection and CMM machines. Coordinate Measuring Machines, including "scanning" probes, optical comparators,...

  14. Organizing quality control programmes

    International Nuclear Information System (INIS)

    Hjardemaal, O.

    1989-01-01

    When procuring new equipment, performance and safety should be specified, if possible by reference to international standards. Some of the characteristics of the International Electrotechnical Commission (IEC) standard for X-ray generators, in particular the accuracy of the operating data, are described. The quality control tests to be performed after installation comprise acceptance test, status test and constancy test. The first two involve absolute measurements and will be the responsibility of physicists or engineers. Apparently limiting values stipulated by users are a factor of two lower than the limits of the IEC standard. By means of an example it is shown that modern X-ray generators can meet the lower limits of the users without problems. In order to obtain optimum initial quality when procuring new equipment operating data, limiting values must be specified and must be verified by acceptance testing, etc. However, in many countries physicists and engineers are not available for this job. A relatively uncomplicated test object can be used by radiographers for checks on fluoroscopic systems. The findings from such tests in Denmark are compared with other published findings and good agreement is found. Therefore it is proposed that such uncomplicated tests could form the basis for quality evaluation. (author)

  15. Interaction between production control and quality control

    NARCIS (Netherlands)

    Bij, van der J.D.; Ekert, van J.H.W.

    1999-01-01

    Describes a qualitative study on interaction between systems for production control and quality control within industrial organisations. Production control and quality control interact in a sense. Good performance for one aspect often influences or frustrates the performance of the other. As far as

  16. Quality control in nuclear medicine

    International Nuclear Information System (INIS)

    Leme, P.R.

    1983-01-01

    The following topics are discussed: objectives of the quality control in nuclear medicine; the necessity of the quality control in nuclear medicine; guidelines and recommendations. An appendix is given concerning the guidelines for the quality control and instrumentation in nuclear medicine. (M.A.) [pt

  17. Printing quality control automation

    Science.gov (United States)

    Trapeznikova, O. V.

    2018-04-01

    One of the most important problems in the concept of standardizing the process of offset printing is the control the quality rating of printing and its automation. To solve the problem, a software has been developed taking into account the specifics of printing system components and the behavior in printing process. In order to characterize the distribution of ink layer on the printed substrate the so-called deviation of the ink layer thickness on the sheet from nominal surface is suggested. The geometric data construction the surface projections of the color gamut bodies allows to visualize the color reproduction gamut of printing systems in brightness ranges and specific color sectors, that provides a qualitative comparison of the system by the reproduction of individual colors in a varying ranges of brightness.

  18. Quality control in urinalysis.

    Science.gov (United States)

    Takubo, T; Tatsumi, N

    1999-01-01

    Quality control (QC) has been introduced in laboratories, and QC surveys in urinalysis have been performed by College of American Pathologist, by Japanese Association of Medical Technologists, by Osaka Medical Association and by manufacturers. QC survey in urinalysis for synthetic urine by the reagent strip and instrument made in same manufacturer, and by an automated urine cell analyser provided satisfactory results among laboratories. QC survey in urinalysis for synthetic urine by the reagent strips and instruments made by various manufacturers indicated differences in the determination values among manufacturers, and between manual and automated methods because the reagent strips and instruments have different characteristics, respectively. QC photo survey in urinalysis on the microscopic photos of urine sediment constituents indicated differences in the identification of cells among laboratories. From the results, it is necessary to standardize a reagent strip method, manual and automated methods, and synthetic urine.

  19. Hydraulic engine valve actuation system including independent feedback control

    Science.gov (United States)

    Marriott, Craig D

    2013-06-04

    A hydraulic valve actuation assembly may include a housing, a piston, a supply control valve, a closing control valve, and an opening control valve. The housing may define a first fluid chamber, a second fluid chamber, and a third fluid chamber. The piston may be axially secured to an engine valve and located within the first, second and third fluid chambers. The supply control valve may control a hydraulic fluid supply to the piston. The closing control valve may be located between the supply control valve and the second fluid chamber and may control fluid flow from the second fluid chamber to the supply control valve. The opening control valve may be located between the supply control valve and the second fluid chamber and may control fluid flow from the supply control valve to the second fluid chamber.

  20. Appraisal Of Quality Of Life Of Diabetic Patients, Including Life ...

    African Journals Online (AJOL)

    The review showed that patients with diabetes mellitus had signi cantly low ... of life (physical health, psychological health, social relations, and environment). ... of quality of life regarding gender, age, or the level of education of the patients. ... neuropathy, impaired vision, elevated blood lipids and amputation of toes or feet.

  1. Control of quality in mammography

    International Nuclear Information System (INIS)

    2006-10-01

    The present protocol of quality control/quality assurance in mammography is the result of the work of two regional projects realised in Latin America within the frame of ARCAL with the support of the IAEA. The first is ARCAL LV (RLA/6/043) project on quality assurance/quality control in mammography studies which analysed the present situation of the mammography in the member countries of the project which include: Bolivia, Colombia, Costa Rica, Cuba, El Salvador, Guatemala, Nicaragua, Panama, Paraguay, Peru, Dominican Republic and Republic of Venezuela and the second is ARCAL XLIX (RLA/9/035) project, whose members were Brazil, Colombia, Cuba, Chile, Mexico, and Peru, worked the application of Basic Safety Standards for the protection against ionising radiation with the aim to improve radiation protection in X-ray diagnosis medical practices through the implementation of the Basic Safety Standards (BSS) related to x-ray diagnosis in selected hospitals located in each country involved in the project. The work of both projects had been consolidated and harmonized in the present publication

  2. Metrology and quality control handbook

    International Nuclear Information System (INIS)

    Hofmann, D.

    1983-01-01

    This book tries to present the fundamentals of metrology and quality control in brief surveys. Compromises had to be made in order to reduce the material available to a sensible volume for the sake of clarity. This becomes evident by the following two restrictions which had to made: First, in dealing with the theoretical principles of metrology and quality control, mere reference had to be made in many cases to the great variety of special literature without discussing it to explain further details. Second, in dealing with the application of metrology and quality control techniques in practice, only the basic qantities of the International System of Units (SI) could be taken into account as a rule. Some readers will note that many special measuring methods and equipment known to them are not included in this book. I do hope, however, that this short-coming will show to have a positive effect, too. This book will show the reader how to find the basic quantities and units from the derived quantities and units, and the steps that are necessary to solve any kind of measuring task. (orig./RW) [de

  3. Quality control of pesticide products

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-07-15

    In light of an established need for more efficient analytical procedures, this publication, which documents the findings of an IAEA coordinated research project (CRP) on “Quality Control of Pesticide Products”, simplifies the existing protocol for pesticide analysis while simultaneously upholding existing standards of quality. This publication includes both a report on the development work done in the CRP and a training manual for use by pesticide analysis laboratories. Based on peer reviewed and internationally recognized methods published by the Association of Analytical Communities (AOAC) and the Collaborative International Pesticides Analytical Council (CIPAC), this report provides laboratories with versatile tools to enhance the analysis of pesticide chemicals and to extend the scope of available analytical repertoires. Adoption of the proposed analytical methodologies promises to reduce laboratories’ use of solvents and the time spent on reconfiguration and set-up of analytical equipment.

  4. Quality control of pesticide products

    International Nuclear Information System (INIS)

    2009-07-01

    In light of an established need for more efficient analytical procedures, this publication, which documents the findings of an IAEA coordinated research project (CRP) on “Quality Control of Pesticide Products”, simplifies the existing protocol for pesticide analysis while simultaneously upholding existing standards of quality. This publication includes both a report on the development work done in the CRP and a training manual for use by pesticide analysis laboratories. Based on peer reviewed and internationally recognized methods published by the Association of Analytical Communities (AOAC) and the Collaborative International Pesticides Analytical Council (CIPAC), this report provides laboratories with versatile tools to enhance the analysis of pesticide chemicals and to extend the scope of available analytical repertoires. Adoption of the proposed analytical methodologies promises to reduce laboratories’ use of solvents and the time spent on reconfiguration and set-up of analytical equipment

  5. INFORMATION SYSTEM QUALITY CONTROL KNOWLEDGE

    Directory of Open Access Journals (Sweden)

    Vladimir Nikolaevich Babeshko

    2017-02-01

    Full Text Available The development of the educational system is associated with the need to control the quality of educational services. Quality control knowledge is an important part of the scientific process. The penetration of computers into all areas of activities changing approaches and technologies that previously they were used.

  6. Quality control of nuclear medicine instrumentation

    International Nuclear Information System (INIS)

    Mould, R.F.

    1983-09-01

    The proceedings of a conference held by the Hospital Physicists' Association in London 1983 on the quality control of nuclear medicine instrumentation are presented. Section I deals with the performance of the Anger gamma camera including assessment during manufacture, acceptance testing, routine testing and long-term assessment of results. Section II covers interfaces, computers, the quality control problems of emission tomography and the quality of software. Section III deals with radionuclide measurement and impurity assessment and Section IV the presentation of images and the control of image quality. (U.K.)

  7. Quality control education in the community college

    Science.gov (United States)

    Greene, J. Griffen; Wilson, Steve

    1966-01-01

    This paper describes the Quality Control Program at Daytona Beach Junior College, including course descriptions. The program in quality control required communication between the college and the American Society for Quality Control (ASQC). The college has machinery established for certification of the learning process, and the society has the source of teachers who are competent in the technical field and who are the employers of the educational products. The associate degree for quality control does not have a fixed program, which can serve all needs, any more than all engineering degrees have identical programs. The main ideas which would be common to all quality control programs are the concept of economic control of a repetitive process and the concept of developing individual potentialities into individuals who are needed and productive.

  8. Quality Controlled Local Climatological Data (QCLCD) Publication

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Quality Controlled Local Climatological Data (QCLCD) contains summaries from major airport weather stations that include a daily account of temperature extremes,...

  9. Control rod calibration including the rod coupling effect

    International Nuclear Information System (INIS)

    Szilard, R.; Nelson, G.W.

    1984-01-01

    In a reactor containing more than one control rod, which includes all reactors licensed in the United States, there will be a 'coupling' or 'shadowing' of control rod flux at the location of a control rod as a result of the flux depression caused by another control rod. It was decided to investigate this phenomenon further, and eventually to put calibration table data or formulae in a small computer in the control room, so once could insert the positions of the three control rods and receive the excess reactivity without referring to separate tables. For this to be accomplished, a 'three control- rod reactivity function' would be used which would include the flux coupling between the rods. The function is design and measured data was fitted into it to determine the calibration constants. The input data for fitting the trial functions consisted of 254 data points, each consisting of the position of the reg, shim, and transient rods, and the total excess reactivity. (About 200 of these points were 'critical balance points', that is the rod positions for which reactor was critical, and the remainder were determined by positive period measurements.) Although this may be unrealistic from a physical viewpoint, the function derived gave a very accurate recalculation of the input data, and thus would faithfully give the excess reactivity for any possible combination of the locations of the three control rods. The next step, incorporation of the three-rod function into the minicomputer, will be pursued in the summer and fall of 1984

  10. Production, control and utilization of radioisotopes including radiopharmaceuticals

    International Nuclear Information System (INIS)

    Muenze, R.

    1985-05-01

    From April 29th to May 5th, 1984 27 participants from 21 developing countries stayed within an IAEA Study Tour ('Production, Control and Utilization of Radioisotopes including Radiopharmaceuticals') in the GDR. In the CINR, Rossendorf the reactor, the cyclotron, the technological centre as well as the animal test laboratory were visited. The participants were made familiar by 10 papers with the development, production and control of radiopharmaceuticals in the CINR, Rossendorf. (author)

  11. Quality assurance programme and quality control

    International Nuclear Information System (INIS)

    Alvarez de Buergo, L.

    1979-01-01

    The paper analyses the requirements for the quality assurance and control in nuclear power plant projects which are needed to achieve safe, reliable and economic plants. The author describes the structure for the establishment of a nuclear programme at the national level and the participation of the different bodies involved in a nuclear power plant project. The paper ends with the study of a specific case in Spain. (NEA) [fr

  12. Synthetic pulse radar including a microprocessor based controller

    International Nuclear Information System (INIS)

    Fowler, J.C.; Rubin, L.A.; Still, W.L.

    1980-01-01

    This invention relates to pulse radar detection of targets in extended media, including natural phenomena such as oil, coal and ore deposits within the earth. In particular, this invention relates to a pulse radar system employing a synthetic pulse formed from a fourier spectrum of frequencies generated and detected by a digitally controlled transmitter and receiver circuits

  13. Quality control of radiopharmaceuticals

    International Nuclear Information System (INIS)

    Wallen, O.; Komarov, E.

    1973-01-01

    The International Pharmacopoeia published by WHO constitutes a collection of recommended specifications for pharmaceutical preparations which are not intended to have legal status in any country, but serve as references so that national specifications can be established on a similar basis in any country. Like any pharmacopoeia, it contains monographs for the quality con trol of drugs by means of chemical, physical and simple biological methods, as well as appendices describing general methods. The work on the International Pharmacopoeia is carried out by WHO with the aid of the Expert Advisory Panel on the International Pharmacopoeia and Pharmaceutical Preparations and other specialists from various countries and the Expert Committee on Specifications for Pharmaceutical Preparations. (author)

  14. Quality control of labelled compounds

    International Nuclear Information System (INIS)

    Matucha, M.

    1979-01-01

    Some advantages and disadvantages of methods used for quality control of organic labelled compounds (1 31 I, 14 C) are shortly discussed. The methods used are electrophoresis, ultraviolet and infrared spectrometry, radiogas and thin-layer chromatography. (author)

  15. [Quality control in herbal supplements].

    Science.gov (United States)

    Oelker, Luisa

    2005-01-01

    Quality and safety of food and herbal supplements are the result of a whole of different elements as good manufacturing practice and process control. The process control must be active and able to individuate and correct all possible hazards. The main and most utilized instrument is the hazard analysis critical control point (HACCP) system the correct application of which can guarantee the safety of the product. Herbal supplements need, in addition to standard quality control, a set of checks to assure the harmlessness and safety of the plants used.

  16. Fuel cycle and quality control

    International Nuclear Information System (INIS)

    Stoll, W.

    1979-01-01

    The volume of the fuel cycle is described in its economic importance and its through put, as it is envisaged for the Federal Republic of Germany. Definitions are given for quality continuing usefulness of an object and translated into quality criteria. Requirements on performance of fuel elements are defined. The way in which experimental results are translated into mass production of fuel rods, is described. The economic potential for further quality effort is derived. Future ways of development for quality control organisation and structure are outlined. (Auth.)

  17. SAQC: SNP Array Quality Control

    Directory of Open Access Journals (Sweden)

    Li Ling-Hui

    2011-04-01

    Full Text Available Abstract Background Genome-wide single-nucleotide polymorphism (SNP arrays containing hundreds of thousands of SNPs from the human genome have proven useful for studying important human genome questions. Data quality of SNP arrays plays a key role in the accuracy and precision of downstream data analyses. However, good indices for assessing data quality of SNP arrays have not yet been developed. Results We developed new quality indices to measure the quality of SNP arrays and/or DNA samples and investigated their statistical properties. The indices quantify a departure of estimated individual-level allele frequencies (AFs from expected frequencies via standardized distances. The proposed quality indices followed lognormal distributions in several large genomic studies that we empirically evaluated. AF reference data and quality index reference data for different SNP array platforms were established based on samples from various reference populations. Furthermore, a confidence interval method based on the underlying empirical distributions of quality indices was developed to identify poor-quality SNP arrays and/or DNA samples. Analyses of authentic biological data and simulated data show that this new method is sensitive and specific for the detection of poor-quality SNP arrays and/or DNA samples. Conclusions This study introduces new quality indices, establishes references for AFs and quality indices, and develops a detection method for poor-quality SNP arrays and/or DNA samples. We have developed a new computer program that utilizes these methods called SNP Array Quality Control (SAQC. SAQC software is written in R and R-GUI and was developed as a user-friendly tool for the visualization and evaluation of data quality of genome-wide SNP arrays. The program is available online (http://www.stat.sinica.edu.tw/hsinchou/genetics/quality/SAQC.htm.

  18. Frontiers in statistical quality control

    CERN Document Server

    Wilrich, Peter-Theodor

    2001-01-01

    The book is a collection of papers presented at the 5th International Workshop on Intelligent Statistical Quality Control in Würzburg, Germany. Contributions deal with methodology and successful industrial applications. They can be grouped in four catagories: Sampling Inspection, Statistical Process Control, Data Analysis and Process Capability Studies and Experimental Design.

  19. Quality Control - Nike.Inc

    OpenAIRE

    Walter G. Bishop

    2017-01-01

    The purpose of this paper is to present the illustration of quality control approach, which has been adopted by several organizations, in order to manage and improve their production processes. The approach is referred as total quality management (TQM). This study will discuss the implementation of TQ, within the working environment of Nike Inc. One of the major objectives behind the implementation of TQ is to reduce or completely eliminate potential errors and flaws, within the manufacturing...

  20. Quality assurance, quality control and quality audit in diagnostic radiology

    International Nuclear Information System (INIS)

    Vassileva, J.

    2009-01-01

    Full text:The lecture aims to present contemporary view of quality assurance in X-Ray diagnosis and its practical realization in Bulgaria. In the lecture the concepts of quality assurance, quality control and clinical audit will be defined and their scope will be considered. An answer of the following questions will be given: why is it necessary to determine the dose of patient in X-ray studies, what is the reference dose level and how it is used for dosimetric quantity which characterized the patient's exposure in X-ray, mammography and CT scans and how they are measured, who conducted the measurement and how to keep the records, what are the variations of doses in identical tests and what defines them? The findings from a national survey of doses in diagnostic radiology, conducted in 2008-2009 and the developed new national reference levels will be presented. The main findings of the first tests of radiological equipment and the future role of quality control as well as the concept of conducting clinical audit and its role in quality assurance are also presented. Quality assurance of the diagnostic process with minimal exposure of patients is a strategic goal whose realization requires understanding, organization and practical action, both nationally and in every hospital. To achieve this the important role of education and training of physicians, radiological technicians and medical physicists is enhanced

  1. 20. Quality assurance and quality control in nuclear medicine

    International Nuclear Information System (INIS)

    Vavrejn, B.

    1989-01-01

    Quality control principles to be applied when taking over and using nuclear medicine instrumentation are given. Such instrumentation includes activity meters, gamma detectors for in vitro measurements (manual or automated instruments), gamma detectors for in vivo measurements (with one or several probes), 'movable' scintigraphs and 'steady' scintigraphs (gamma cameras). (Z.S.)

  2. Frontiers in statistical quality control

    CERN Document Server

    Wilrich, Peter-Theodor

    1997-01-01

    Like the preceding volumes, and met with a lively response, the present volume is collecting contributions stressed on methodology or successful industrial applications. The papers are classified under four main headings: sampling inspection, process quality control, data analysis and process capability studies and finally experimental design.

  3. Quality assurance and statistical control

    DEFF Research Database (Denmark)

    Heydorn, K.

    1991-01-01

    In scientific research laboratories it is rarely possible to use quality assurance schemes, developed for large-scale analysis. Instead methods have been developed to control the quality of modest numbers of analytical results by relying on statistical control: Analysis of precision serves...... to detect analytical errors by comparing the a priori precision of the analytical results with the actual variability observed among replicates or duplicates. The method relies on the chi-square distribution to detect excess variability and is quite sensitive even for 5-10 results. Interference control...... serves to detect analytical bias by comparing results obtained by two different analytical methods, each relying on a different detection principle and therefore exhibiting different influence from matrix elements; only 5-10 sets of results are required to establish whether a regression line passes...

  4. Network-based production quality control

    Science.gov (United States)

    Kwon, Yongjin; Tseng, Bill; Chiou, Richard

    2007-09-01

    This study investigates the feasibility of remote quality control using a host of advanced automation equipment with Internet accessibility. Recent emphasis on product quality and reduction of waste stems from the dynamic, globalized and customer-driven market, which brings opportunities and threats to companies, depending on the response speed and production strategies. The current trends in industry also include a wide spread of distributed manufacturing systems, where design, production, and management facilities are geographically dispersed. This situation mandates not only the accessibility to remotely located production equipment for monitoring and control, but efficient means of responding to changing environment to counter process variations and diverse customer demands. To compete under such an environment, companies are striving to achieve 100%, sensor-based, automated inspection for zero-defect manufacturing. In this study, the Internet-based quality control scheme is referred to as "E-Quality for Manufacturing" or "EQM" for short. By its definition, EQM refers to a holistic approach to design and to embed efficient quality control functions in the context of network integrated manufacturing systems. Such system let designers located far away from the production facility to monitor, control and adjust the quality inspection processes as production design evolves.

  5. Model-Based Brake Control including Tyre Behaviour

    NARCIS (Netherlands)

    De Vries, E.J.H.

    2012-01-01

    The objective of the thesis is to develop a method for controlled braking of a vehicle. The brake pedal depression has been considered to be proportional to the intended deceleration. The brake controller is not aimed to replace a cruise control; it will have an anti-lock braking (ABS) function. The

  6. Quality Assurance/Quality Control Jobs

    Science.gov (United States)

    Fanslau, Melody; Young, Janelle

    The production of a quality and safe food product is essential to the success of any food manufacturing facility. Because of this great importance, a career in quality can be extremely rewarding. Without happy customers willing to buy a product, a company would not be able to survive. Quality issues such as foreign objects, spoiled or mislabeled product, failure to meet net weight requirements, or a recall can all turn customers away from buying a product. The food industry is a customer-driven market in which some consumers are brand loyal based on a history of high quality or in which a single bad experience with a product will turn them away for a lifetime. With this said, the main role of a quality department is to help ensure that quality issues such as these are eliminated or kept to a minimum to maintain or increase the number of customers purchasing their product.

  7. Quality Control Of Selected Pesticides With GC

    Energy Technology Data Exchange (ETDEWEB)

    Karasali, H. [Benaki Phytopathological Institute Laboratory of Physical and Chemical Analysis of Pesticides, Ekalis (Greece)

    2009-07-15

    The practical quality control of selected pesticides with GC is treated. Detailed descriptions are given on materials and methods used, including sample preparation and GC operating conditions. The systematic validation of multi methods is described, comprising performance characteristics in routine analysis, like selectivity, specificity etc. This is illustrated by chromatograms, calibration curves and tables derived from real laboratory data. (author)

  8. quality control of the radiopharmaceuticals

    International Nuclear Information System (INIS)

    Boukarra, Hajer; Boubakri, Rania

    2006-01-01

    This work is a contribution to the quality control of two radio pharmaceutical. Our study was carried out on the rat. These results enable us to draw the following conclusions: - the control of the purity of the cerebral tracers (Cytectrenes) is carried out by HPLC by using a detector of radioactivity which offers a great sensitivity. - the radiochemical output of marking of Kit MDP determined by thin chromatography of layer is 99%. - The study of the biodistribution in the rat showed an affinity raised for the feet bone. - These results are in conformity with the European pharmacopoeia, which enables us to require a marketing authorization. (author)

  9. Radiation measurements and quality control

    International Nuclear Information System (INIS)

    McLaughlin, W.L.

    1977-01-01

    Accurate measurements are essential to research leading to a successful radiation process and to the commissioning of the process and the facility. On the other hand, once the process is in production, the importance to quality control of measuring radiation quantities (i.e., absorbed dose, dose rate, dose distribution) rather than various other parameters of the process (i.e. conveyor speed, dwell time, radiation field characteristics, product dimensions) is not clearly established. When the safety of the product is determined by the magnitude of the administered dose, as in radiation sterilization, waste control, or food preservation, accuracy and precision of the measurement of the effective dose are vital. Since physical dose measurements are usually simpler, more reliable and reproducible than biological testing of the product, there is a trend toward using standardized dosimetry for quality control of some processes. In many industrial products, however, such as vulcanized rubber, textiles, plastics, coatings, films, wire and cable, the effective dose can be controlled satisfactorily by controlling process variables or by product testing itself. In the measurement of radiation dose profiles by dosimetry, it is necessary to have suitable dose meter calibrations, to account for sources of error and imprecision, and to use correct statistical procedures in specifying dwell times or conveyor speeds and source and product parameters to achieve minimum and maximum doses within specifications. (author)

  10. Statistical quality control a loss minimization approach

    CERN Document Server

    Trietsch, Dan

    1999-01-01

    While many books on quality espouse the Taguchi loss function, they do not examine its impact on statistical quality control (SQC). But using the Taguchi loss function sheds new light on questions relating to SQC and calls for some changes. This book covers SQC in a way that conforms with the need to minimize loss. Subjects often not covered elsewhere include: (i) measurements, (ii) determining how many points to sample to obtain reliable control charts (for which purpose a new graphic tool, diffidence charts, is introduced), (iii) the connection between process capability and tolerances, (iv)

  11. PACS quality control and automatic problem notifier

    Science.gov (United States)

    Honeyman-Buck, Janice C.; Jones, Douglas; Frost, Meryll M.; Staab, Edward V.

    1997-05-01

    One side effect of installing a clinical PACS Is that users become dependent upon the technology and in some cases it can be very difficult to revert back to a film based system if components fail. The nature of system failures range from slow deterioration of function as seen in the loss of monitor luminance through sudden catastrophic loss of the entire PACS networks. This paper describes the quality control procedures in place at the University of Florida and the automatic notification system that alerts PACS personnel when a failure has happened or is anticipated. The goal is to recover from a failure with a minimum of downtime and no data loss. Routine quality control is practiced on all aspects of PACS, from acquisition, through network routing, through display, and including archiving. Whenever possible, the system components perform self and between platform checks for active processes, file system status, errors in log files, and system uptime. When an error is detected or a exception occurs, an automatic page is sent to a pager with a diagnostic code. Documentation on each code, trouble shooting procedures, and repairs are kept on an intranet server accessible only to people involved in maintaining the PACS. In addition to the automatic paging system for error conditions, acquisition is assured by an automatic fax report sent on a daily basis to all technologists acquiring PACS images to be used as a cross check that all studies are archived prior to being removed from the acquisition systems. Daily quality control is preformed to assure that studies can be moved from each acquisition and contrast adjustment. The results of selected quality control reports will be presented. The intranet documentation server will be described with the automatic pager system. Monitor quality control reports will be described and the cost of quality control will be quantified. As PACS is accepted as a clinical tool, the same standards of quality control must be established

  12. Transient performance of integrated SOFC system including spatial temperature control

    OpenAIRE

    Mueller, F; Fardadi, M; Shaffer, B; Brouwer, J; Jabbari, F

    2010-01-01

    Spatial temperature feedback control has been developed for a simulated integrated non-pressurized simple cycle solid oxide fuel cell (SOFC) system. The fuel cell spatial temperature feedback controller is based on (1) feed-forward set-points that minimize temperature variation in the fuel cell electrode-electrolyte solid temperature profile for the system operating power range, and (2) decentralized proportional-integral based feedback to maintain the fuel cell spatial temperature profile du...

  13. An Initial Look at the Quality of Life of Malaysian Families That Include Children with Disabilities

    Science.gov (United States)

    Clark, M.; Brown, R.; Karrapaya, R.

    2012-01-01

    Background: While there is a growing body of literature in the quality of life of families that include children with disabilities, the majority of research has been conducted in western countries. The present study provides an initial exploration of the quality of life of Malaysian families that include children with developmental/intellectual…

  14. Quality control in nuclear medicine

    International Nuclear Information System (INIS)

    Kostadinova, I.

    2007-01-01

    Nuclear medicine comprises diagnosis and therapy of the diseases with radiopharmaceuticals. The ambition of all specialists in our country is their activity to reach European standards. In this connection, a Commission for external audit was formed to evaluate the quality of work in the centers of nuclear medicine. This Commission create a long-lasting programme based on the objective European criteria and the national standard of nuclear medicine, having in mind to increase quality of the work and the expert evaluation of activity in every center. The program comprises measures for quality control of instrumentation, radiopharmaceuticals, performed investigations, obtained results and the whole organization from the receiving of the isotopes to the results of the patients. The ambition is most of the centers to fulfill the requirements. As a conclusion it could be said that not only the quality of everyday nuclear medicine work is enough to increase the prestige of the specialty. It is also necessary we to have understanding expert and financial support from corresponding institutions, incl. Ministry of health for a delivery of a new, contemporary instrumentation with new possibilities. Thus it would be possible Bulgarian patients to reach the high technology apparatuses for an early functional diagnosis of the diseases and optimal treatment, which possibility have the patients from the developed countries. (author)

  15. Quality control programme for radiotherapy

    International Nuclear Information System (INIS)

    Campos de Araujo, A.M.; Viegas, C.C.B.; Viamonte, A.M.

    2002-01-01

    A 3 years pilot programme started in January 2000 with 33 philanthropic cancer institutions that provides medical services to 60% of the patients from the national social security system. Brazil has today 161 radiotherapy services (144 operating with megavoltage equipment). These 33 institutions are distributed over 19 Brazilian states. The aim of this programme is: To create conditions to allow the participants to apply the radiotherapy with quality and efficacy; To promote up dating courses for the physicians, physicists and technicians of these 33 Institutions. With the following objectives: To recommend dosimetric and radiological protection procedures in order to guarantee the tumor prescribed dose and safe working conditions; To help in establishing and implementing these procedures. The main activities are: local quality control evaluations, postal TLD audits in reference conditions, postal TLD audits in off axis conditions and training. The local quality control program has already evaluated 22 institutions with 43 machines (25 Co-60 and 18 linear accelerators). In these visits we perform dosimetric, electrical, mechanical and safety tests. As foreseen, we found more problems among the old Co-60 machines i.e., field flatness, size, symmetry and relative output factors; lasers positioning system alignment; optical distance indicator; radiation and light field coincidence; optical and mechanical distance indicators agreement, than among the linear accelerators i.e., field flatness and size; lasers positioning system alignment; tray interlocking and wedge filter factors

  16. Family Control and Earnings Quality

    Directory of Open Access Journals (Sweden)

    Carolina Bona Sánchez

    2007-06-01

    Full Text Available El trabajo analiza la relación entre el control familiar y la calidad de la información contable en un contexto en el que el tradicional conflicto de agencia entre directivos y accionistas se desplaza a la divergencia de intereses entre accionistas controladores y minoritarios. Los resultados alcanzados muestran que, en comparación con las no familiares, las empresas de naturaleza familiar divulgan unos resultados de mayor calidad, tanto en términos de menores ajustes por devengo discrecionales como de mayor capacidad de los componentes actuales del resultado para predecir los cash flows futuros. Además, el aumento en los derechos de voto en manos de la familia controladora incrementa la calidad de los resultados contables. La evidencia obtenida se muestra consistente con la presencia de un efecto reputación/vinculación a largo plazo asociado a la empresa familiar. Adicionalmente, el trabajo refleja que a medida que disminuye la divergencia entre los derechos de voto y de cash flow en manos de la familia controladora, aumenta la calidad de la información contable.PALABRAS CLAVE: derechos de voto, divergencia, empresa familiar, calidad delresultado, reputación, beneficios privados.This work examines the relationship between family control and earnings quality in a context where the salient agency problem shifts away from the classical divergence between managers and shareholders to conflicts between the controlling owner and minority shareholders. The results reveal that, compared to non-family firms, family firms reveal higher earnings quality in terms of both lower discretionary accruals and greater predictability of future cash flows. They also show a positive relationship between the level of voting rights held by the controlling family and earnings quality. The evidence is consistent with the presence of a reputation/long-term involvement effect associated with the family firm. Moreover, the work reflects that, as the divergence

  17. Physicians, radiologists, and quality control

    International Nuclear Information System (INIS)

    Payne, W.F.

    1973-01-01

    Factors involved in quality control in medical x-ray examinations to achieve the least possible exposure to the patient are discussed. It would be hoped that film quality will remain in the position of paramount importance that it must in order to achieve the greatest amount of diagnostic information on each radiographic examination. At the same time, it is hoped that this can be done by further reducing the exposure of the patient to ionizing radiation by the methods that have been discussed; namely, education of the physician, radiologist, and technologist, modern protective equipment and departmental construction, efficient collimation whether automatic or manual, calibration and output measurement of the radiographic and fluoroscopic units, ongoing programs of education within each department of radiographic facility, film badge monitoring, education of and cooperation with the nonradiologic physician, and hopefully, more intensive programs by the National and State Bureaus and Departments of Radiological Health in education and encouragement to the medical community. (U.S.)

  18. Position control of a wheeled mobile robot including tire behavior

    NARCIS (Netherlands)

    Ploeg, J.; Schouten, H.E.; Nijmeijer, H.

    2009-01-01

    Advanced driver assistance systems are increasingly available on road vehicles. These systems require a thorough development procedure, an important part of which consists of hardware-in-the-loop experiments in a controlled environment. To this end, a facility called Vehicle Hardware-In-the-Loop

  19. Mitochondrial quality control pathways as determinants of metabolic health

    NARCIS (Netherlands)

    Held, Ntsiki M.; Houtkooper, Riekelt H.

    2015-01-01

    Mitochondrial function is key for maintaining cellular health, while mitochondrial failure is associated with various pathologies, including inherited metabolic disorders and age-related diseases. In order to maintain mitochondrial quality, several pathways of mitochondrial quality control have

  20. Water quality control system and water quality control method

    International Nuclear Information System (INIS)

    Itsumi, Sachio; Ichikawa, Nagayoshi; Uruma, Hiroshi; Yamada, Kazuya; Seki, Shuji

    1998-01-01

    In the water quality control system of the present invention, portions in contact with water comprise a metal material having a controlled content of iron or chromium, and the chromium content on the surface is increased than that of mother material in a state where compression stresses remain on the surface by mechanical polishing to form an uniform corrosion resistant coating film. In addition, equipments and/or pipelines to which a material controlling corrosion potential stably is applied on the surface are used. There are disposed a cleaning device made of a material less forming impurities, and detecting intrusion of impurities and removing them selectively depending on chemical species and/or a cleaning device for recovering drain from various kinds of equipment to feedwater, connecting a feedwater pipeline and a condensate pipeline and removing impurities and corrosion products. Then, water can be kept to neutral purified water, and the concentrations of oxygen and hydrogen in water are controlled within an optimum range to suppress occurrence of corrosion products. (N.H.)

  1. Quality control in breast tomosynthesis

    International Nuclear Information System (INIS)

    Jakubiak, Rosangela Requi; Messias, Pricila Cordeiro; Santos, Marilia Fernanda; Urban, Linei Augusta B.D.

    2014-01-01

    In Brazil breast cancer is the most common and the leading cause of death among women, with estimated 57,000 new cases in 2014. The mammography (2D) plays an important role in the early detection of breast cancer, but in some cases can be difficult to detect malignant lesions due overlap of breast tissues. The Breast Digital Tomosynthesis (BDT: 3D) reduces the effects of overlap, providing improved characterization of mammographic findings. However, the dose may double as compared to the mammography. This study presents results of Contrast Ratio Noise tests (CRN) and quality image on a Siemens mammography equipment Mammomat Inspiration with tomosynthesis. The CRN was determined with plates Polymethylmethacrylate (PMMA) of 20 to 70 mm thickness and an aluminum plate of 10 mm 2 and 0.2 mm thickness. Image quality was assessed with the ACR Breast Simulator. In assessment of image quality, the detectability of fibers and masses was identical in 2D and 3D systems. Were visualized 4.5 fibers and 4 mass in both modes. In 2D mode groups have been identified 3.5 microcalcifications, and 3D were 3 groups. The Mean Glandular Dose for the simulator in 2D mode was 1.17 mGy and 2.35 mGy for the 3D mode. The result reinforces the importance of quality control in the process of obtaining the images and obtained in accordance CRN values, ensuring image quality and dose compatible in 2D and 3D processes

  2. Quality control in breast tomosynthesis

    Energy Technology Data Exchange (ETDEWEB)

    Jakubiak, R.R.; Messias, P.C.; Santos, M.F., E-mail: requi@utfpr.edu.br [Universidade Tecnologia Federal do Parana (UTFPR), Curitiba, PR (Brazil). Departamento Academico de Fisica; Urban, L.A.B.D., E-mail: lineiurban@hotmail.com [Diagnostico Avancado por Imagem, Curitiba, PR (Brazil)

    2015-07-01

    In Brazil, breast cancer is the most common and the leading cause of death among women, with estimated 57,000 new cases in 2014. The mammography (2D) plays an important role in the early detection of breast cancer, but in some cases can be difficult to detect malignant lesions due overlap of breast tissues. The Digital Breasts Tomosynthesis (DBT: 3D) reduces the effects of overlap, providing improved characterization of mammographic findings. However, the dose may double as compared with mammography. This study presents results of Contrast to Noise Ratio (CNR) and image quality evaluation on Siemens mammography equipment Mammomat Inspiration with tomosynthesis. The CNR was determined with Polymethylmethacrylate (PMMA) layers of 20 to 70 mm thick and an aluminum foils of 0,2 mm thickness and area of 10 mm². Image quality was assessed with the ACR Breast Simulator. In the evaluation of image quality, the detectability of fibers and masses was identical in 2D and 3D systems. Displaying fibers were 4,5 and 4 mass in both modes. In 2D mode were identified 3,5 microcalcifications groups, and 3D showed 3 groups. The Mean Glandular Dose (MGD) for the simulator in 2D mode was 1,17 mGy and 2,35 mGy for the 3D mode. The result reinforces the importance of quality control in the process of obtaining the images and obtained in accordance CNR values, ensuring image quality and compatible dose in 2D and 3D processes. (author)

  3. Quality control in breast tomosynthesis

    International Nuclear Information System (INIS)

    Jakubiak, R.R.; Messias, P.C.; Santos, M.F.

    2015-01-01

    In Brazil, breast cancer is the most common and the leading cause of death among women, with estimated 57,000 new cases in 2014. The mammography (2D) plays an important role in the early detection of breast cancer, but in some cases can be difficult to detect malignant lesions due overlap of breast tissues. The Digital Breasts Tomosynthesis (DBT: 3D) reduces the effects of overlap, providing improved characterization of mammographic findings. However, the dose may double as compared with mammography. This study presents results of Contrast to Noise Ratio (CNR) and image quality evaluation on Siemens mammography equipment Mammomat Inspiration with tomosynthesis. The CNR was determined with Polymethylmethacrylate (PMMA) layers of 20 to 70 mm thick and an aluminum foils of 0,2 mm thickness and area of 10 mm². Image quality was assessed with the ACR Breast Simulator. In the evaluation of image quality, the detectability of fibers and masses was identical in 2D and 3D systems. Displaying fibers were 4,5 and 4 mass in both modes. In 2D mode were identified 3,5 microcalcifications groups, and 3D showed 3 groups. The Mean Glandular Dose (MGD) for the simulator in 2D mode was 1,17 mGy and 2,35 mGy for the 3D mode. The result reinforces the importance of quality control in the process of obtaining the images and obtained in accordance CNR values, ensuring image quality and compatible dose in 2D and 3D processes. (author)

  4. 40 CFR 51.359 - Quality control.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 2 2010-07-01 2010-07-01 false Quality control. 51.359 Section 51.359....359 Quality control. Quality control measures shall insure that emission testing equipment is calibrated and maintained properly, and that inspection, calibration records, and control charts are...

  5. Internal quality control: best practice.

    Science.gov (United States)

    Kinns, Helen; Pitkin, Sarah; Housley, David; Freedman, Danielle B

    2013-12-01

    There is a wide variation in laboratory practice with regard to implementation and review of internal quality control (IQC). A poor approach can lead to a spectrum of scenarios from validation of incorrect patient results to over investigation of falsely rejected analytical runs. This article will provide a practical approach for the routine clinical biochemistry laboratory to introduce an efficient quality control system that will optimise error detection and reduce the rate of false rejection. Each stage of the IQC system is considered, from selection of IQC material to selection of IQC rules, and finally the appropriate action to follow when a rejection signal has been obtained. The main objective of IQC is to ensure day-to-day consistency of an analytical process and thus help to determine whether patient results are reliable enough to be released. The required quality and assay performance varies between analytes as does the definition of a clinically significant error. Unfortunately many laboratories currently decide what is clinically significant at the troubleshooting stage. Assay-specific IQC systems will reduce the number of inappropriate sample-run rejections compared with the blanket use of one IQC rule. In practice, only three or four different IQC rules are required for the whole of the routine biochemistry repertoire as assays are assigned into groups based on performance. The tools to categorise performance and assign IQC rules based on that performance are presented. Although significant investment of time and education is required prior to implementation, laboratories have shown that such systems achieve considerable reductions in cost and labour.

  6. Should desperate volunteers be included in randomised controlled trials?

    Science.gov (United States)

    Allmark, P; Mason, S

    2006-09-01

    Randomised controlled trials (RCTs) sometimes recruit participants who are desperate to receive the experimental treatment. This paper defends the practice against three arguments that suggest it is unethical first, desperate volunteers are not in equipoise. Second clinicians, entering patients onto trials are disavowing their therapeutic obligation to deliver the best treatment; they are following trial protocols rather than delivering individualised care. Research is not treatment; its ethical justification is different. Consent is crucial. Third, desperate volunteers do not give proper consent: effectively, they are coerced. This paper responds by advocating a notion of equipoise based on expert knowledge and widely shared values. Where such collective, expert equipoise exists there is a prima facie case for an RCT. Next the paper argues that trial entry does not involve clinicians disavowing their therapeutic obligation; individualised care based on insufficient evidence is not in patients best interest. Finally, it argues that where equipoise exists it is acceptable to limit access to experimental agents; desperate volunteers are not coerced because their desperation does not translate into a right to receive what they desire.

  7. 14 CFR 21.139 - Quality control.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Quality control. 21.139 Section 21.139... PROCEDURES FOR PRODUCTS AND PARTS Production Certificates § 21.139 Quality control. The applicant must show that he has established and can maintain a quality control system for any product, for which he...

  8. Quality and reliability control on assemblies

    International Nuclear Information System (INIS)

    Mueller, H.

    1976-01-01

    Taking as an example electronic assemblies in printed circuit board engineering, quality control during manufacture is dealt with. After giving a survey of four phases of quality and reliability control, some specific methods of quality control are dealt with by means of a flowchart, and by some examples the necessity and the success of these measures are shown. (RW) [de

  9. 7 CFR 930.44 - Quality control.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Quality control. 930.44 Section 930.44 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements... Control § 930.44 Quality control. (a) Quality standards. The Board may establish, with the approval of the...

  10. 33 CFR 385.21 - Quality control.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Quality control. 385.21 Section... Processes § 385.21 Quality control. (a) The Corps of Engineers and the non-Federal sponsor shall prepare a quality control plan, in accordance with applicable Corps of Engineers regulations, for each product that...

  11. 7 CFR 981.42 - Quality control.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Quality control. 981.42 Section 981.42 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements... Regulating Handling Quality Control § 981.42 Quality control. (a) Incoming. Except as provided in this...

  12. Mitochondrial quality control in cardiac diseases.

    Directory of Open Access Journals (Sweden)

    Juliane Campos

    2016-10-01

    Full Text Available Disruption of mitochondrial homeostasis is a hallmark of cardiac diseases. Therefore, maintenance of mitochondrial integrity through different surveillance mechanisms is critical for cardiomyocyte survival. In this review, we discuss the most recent findings on the central role of mitochondrial quality control processes including regulation of mitochondrial redox balance, aldehyde metabolism, proteostasis, dynamics and clearance in cardiac diseases, highlighting their potential as therapeutic targets.

  13. Association between product quality control and process quality control of bulk milk

    NARCIS (Netherlands)

    Velthuis, A.; Asseldonk, van M.A.P.M.

    2010-01-01

    Assessment of dairy-milk quality is based on product quality control (testing bulk-milk samples) and process quality control (auditing dairy farms). It is unknown whether process control improves product quality. To quantify possible association between product control and process control a

  14. Performance and quality control of nuclear medicine instrumentation

    International Nuclear Information System (INIS)

    Paras, P.

    1981-01-01

    The status and the recent developments of nuclear medicine instrumentation performance, with an emphasis on gamma-camera performance, are discussed as the basis for quality control. New phantoms and techniques for the measurement of gamma-camera performance parameters are introduced and their usefulness for quality control is discussed. Tests and procedures for dose calibrator quality control are included. Also, the principles of quality control, tests, equipment and procedures for each type of instrument are reviewed, and minimum requirements for an effective quality assurance programme for nuclear medicine instrumentation are suggested. (author)

  15. The results of a quality-control programme in mammography

    International Nuclear Information System (INIS)

    Ramsdale, M.L.; Hiles, P.A.

    1989-01-01

    A quality-control programme at a breast screening clinic is described. Daily checks include film sensitometry for X-ray processor control and radiography of a lucite phantom to monitor the consistency of the X-ray machine automatic exposure control. Weekly checks include additional measurements on the performance of the automatic exposure control for different breast thickness and an overall assessment of image quality using a prototype mammography test phantom. The test phantom measures low-contrast sensitivity, high-control resolution and small-detail visibility. The results of the quality-control programme are presented with particular attention paid to tolerances and limiting values. (author)

  16. Quality control analysis at the hospital

    International Nuclear Information System (INIS)

    Kristensen, K.

    1979-01-01

    Quality control analysis is an integral part of quality assurance. In a system as with radiopharmaceuticals where part of the finishing of the product takes place at individual hospitals, the need for quality control analysis at the hospital can be discussed. Data are presented that stresses the importance of quality control by the manufacturer as a basis for limitation of such work at hospitals. A simplified programme is proposed

  17. Quality control guarantees the safety of radiotherapy

    International Nuclear Information System (INIS)

    Aaltonen, P.

    1994-01-01

    While radiotherapy equipment has seen some decisive improvements in the last few decades, the technology has also become more complicated. The advanced equipment produces increasingly good treatment results, but the condition of the equipment must be controlled efficiently so as to eliminate any defects that might jeopardise patient safety. The quality assurance measures that are taken to show that certain equipment functions as required are known as quality control. The advanced equipment and stricter requirements set for the precision of radiotherapy have meant that more attention must be paid to quality control. The present radiation legislation stipulates that radiotherapy equipment must undergo regular quality control. The implementation of the quality control is supervised by the Finnish Centre for Radiation and Nuclear Safety (STUK). Hospitals carry out quality control in accordance with a programme approved by STUK, and STUK inspectors periodically visit hospitals to check the results of quality control. (orig.)

  18. Radiopharmaceutical quality control-Pragmatic approach

    International Nuclear Information System (INIS)

    Barbier, Y.

    1994-01-01

    The quality control must be considered in a practical manner. The radiopharmaceuticals are drugs. They must satisfy the quality assurance control. These products are then conform to Pharmacopeia. But sometimes the user must control some data especially radiochemical purity and pH value. On all the administered solutions four controls are compulsory: radionuclide identity, administered radioactivity, organoleptic character and pH

  19. Quality-control design for surface-water sampling in the National Water-Quality Network

    Science.gov (United States)

    Riskin, Melissa L.; Reutter, David C.; Martin, Jeffrey D.; Mueller, David K.

    2018-04-10

    The data-quality objectives for samples collected at surface-water sites in the National Water-Quality Network include estimating the extent to which contamination, matrix effects, and measurement variability affect interpretation of environmental conditions. Quality-control samples provide insight into how well the samples collected at surface-water sites represent the true environmental conditions. Quality-control samples used in this program include field blanks, replicates, and field matrix spikes. This report describes the design for collection of these quality-control samples and the data management needed to properly identify these samples in the U.S. Geological Survey’s national database.

  20. The results of a quality-control programme in mammography

    International Nuclear Information System (INIS)

    Ramsdale, M.L.; Hiles, P.A.

    1989-01-01

    With the introduction of a breast screening programme in the UK, quality assurance in mammography is of paramount importance in assuring optimum imaging performance with low dose. Quality control checks are an essential part of the quality-assurance system. A quality-control programme at a breast screening clinic is described. Daily checks include film sensitometry for X-ray processor control and radiography of a lucite phantom to monitor the consistency of the X-ray machine automatic exposure control. Weekly checks include additional measurements on the performance of the automatic exposure control for different breast thickness and an overall assessment of image quality using a prototype mammography test phantom. The test phantom measures low-contrast sensitivity, high-contrast resolution and small-detail visibility. The results of the quality-control programme are presented with particular attention paid to tolerances and limiting values. (author)

  1. Expert database system for quality control

    Science.gov (United States)

    Wang, Anne J.; Li, Zhi-Cheng

    1993-09-01

    There are more competitors today. Markets are not homogeneous they are fragmented into increasingly focused niches requiring greater flexibility in the product mix shorter manufacturing production runs and above allhigher quality. In this paper the author identified a real-time expert system as a way to improve plantwide quality management. The quality control expert database system (QCEDS) by integrating knowledge of experts in operations quality management and computer systems use all information relevant to quality managementfacts as well as rulesto determine if a product meets quality standards. Keywords: expert system quality control data base

  2. Quality control of activity detectors

    International Nuclear Information System (INIS)

    Surma, M.J.

    2002-01-01

    The conditions decided on radiometric measurements quality as geometry, background, calibration etc. have been described. The testing methods for achieving high quality of radioactivity measurements using nuclear medicine instruments have been recommended

  3. Quality Controlling CMIP datasets at GFDL

    Science.gov (United States)

    Horowitz, L. W.; Radhakrishnan, A.; Balaji, V.; Adcroft, A.; Krasting, J. P.; Nikonov, S.; Mason, E. E.; Schweitzer, R.; Nadeau, D.

    2017-12-01

    As GFDL makes the switch from model development to production in light of the Climate Model Intercomparison Project (CMIP), GFDL's efforts are shifted to testing and more importantly establishing guidelines and protocols for Quality Controlling and semi-automated data publishing. Every CMIP cycle introduces key challenges and the upcoming CMIP6 is no exception. The new CMIP experimental design comprises of multiple MIPs facilitating research in different focus areas. This paradigm has implications not only for the groups that develop the models and conduct the runs, but also for the groups that monitor, analyze and quality control the datasets before data publishing, before their knowledge makes its way into reports like the IPCC (Intergovernmental Panel on Climate Change) Assessment Reports. In this talk, we discuss some of the paths taken at GFDL to quality control the CMIP-ready datasets including: Jupyter notebooks, PrePARE, LAMP (Linux, Apache, MySQL, PHP/Python/Perl): technology-driven tracker system to monitor the status of experiments qualitatively and quantitatively, provide additional metadata and analysis services along with some in-built controlled-vocabulary validations in the workflow. In addition to this, we also discuss the integration of community-based model evaluation software (ESMValTool, PCMDI Metrics Package, and ILAMB) as part of our CMIP6 workflow.

  4. 30 CFR 74.6 - Quality control.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Quality control. 74.6 Section 74.6 Mineral... of the CMDPSU will be maintained in production through adequate quality control procedures, MSHA and... DUST SAMPLING DEVICES Approval Requirements for Coal Mine Dust Personal Sampler Unit § 74.6 Quality...

  5. Employee quality, monitoring environment and internal control

    OpenAIRE

    Chunli Liu; Bin Lin; Wei Shu

    2017-01-01

    We investigate the effect of internal control employees (ICEs) on internal control quality. Using special survey data from Chinese listed firms, we find that ICE quality has a significant positive influence on internal control quality. We examine the effect of monitoring on this result and find that the effect is more pronounced for firms with strict monitoring environments, especially when the firms implement the Chinese internal control regulation system (CSOX), have higher institutional ow...

  6. Problems of quality assurance and quality control in diagnostic radiology

    International Nuclear Information System (INIS)

    Angerstein, W.

    1986-01-01

    Topical problems of quality assurance and quality control in diagnostic radiology are discussed and possible solutions are shown. Complex units are differentiated with reference to physicians, technicians, organization of labour, methods of examination and indication. Quality control of radiologic imaging systems should involve three stages: (1) simple tests carried out by radiologic technicians, (2) measurements by service technicians, (3) testing of products by the manufacturer and independent governmental or health service test agencies. (author)

  7. Quality control in tile production

    Science.gov (United States)

    Kalviainen, Heikki A.; Kukkonen, Saku; Hyvarinen, Timo S.; Parkkinen, Jussi P. S.

    1998-10-01

    This work studies visual quality control in ceramics industry. In tile manufacturing, it is important that in each set of tiles, every single tile looks similar. For example, the tiles should have similar color and texture. Our goal is to design a machine vision system that can estimate the sufficient similarity or same appearance to the human eye. Currently, the estimation is usually done by human vision. Differing from other approaches our aim is to use accurate spectral representation of color, and we are comparing spectral features to the RGB color features. A laboratory system for color measurement is built. Experimentations with five classes of brown tiles are presented. We use chromaticity RGB features and several spectral features for classification with the k-NN classifier and with a neural network, called Self-Organizing Map. We can classify many of the tiles but there are several problems that need further investigations: larger training and test sets are needed, illuminations effects must be studied further, and more suitable spectral features are needed with more sophisticated classifiers. It is also interesting to develop further the neural approach.

  8. Concrete and steel construction quality control and assurance

    CERN Document Server

    El-Reedy, Mohamed A

    2014-01-01

    Starting with the receipt of materials and continuing all the way through to the final completion of the construction phase, Concrete and Steel Construction: Quality Control and Assurance examines all the quality control and assurance methods involving reinforced concrete and steel structures. This book explores the proper ways to achieve high-quality construction projects, and also provides a strong theoretical and practical background. It introduces information on quality techniques and quality management, and covers the principles of quality control. The book presents all of the quality control and assurance protocols and non-destructive test methods necessary for concrete and steel construction projects, including steel materials, welding and mixing, and testing. It covers welding terminology and procedures, and discusses welding standards and procedures during the fabrication process, as well as the welding codes. It also considers the total quality management system based on ISO 9001, and utilizes numer...

  9. Effects of Low Light on Agronomic and Physiological Characteristics of Rice Including Grain Yield and Quality

    Directory of Open Access Journals (Sweden)

    Qi-hua LIU

    2014-09-01

    Full Text Available Light intensity is one of the most important environmental factors that determine the basic characteristics of rice development. However, continuously cloudy weather or rainfall, especially during the grain-filling stage, induces a significant loss in yield and results in poor grain quality. Stress caused by low light often creates severe meteorological disasters in some rice-growing regions worldwide. This review was based on our previous research and related research regarding the effects of low light on rice growth, yield and quality as well as the formation of grain, and mainly reviewed the physiological metabolism of rice plants, including characteristics of photosynthesis, activities of antioxidant enzymes in rice leaves and key enzymes involved in starch synthesis in grains, as well as the translocations of carbohydrate and nitrogen. These characteristics include various grain yield and rice quality components (milling and appearance as well as cooking, eating and nutritional qualities under different rates of shading imposed at the vegetative or reproductive stages of rice plants. Furthermore, we discussed why grain yield and quality are reduced under the low light environment. Next, we summarized the need for future research that emphasizes methods can effectively improve rice grain yield and quality under low light stress. These research findings can provide a beneficial reference for rice cultivation management and breeding program in low light environments.

  10. Quality control protocols for radiodiagnosis agents and radiopharmaceuticals

    International Nuclear Information System (INIS)

    Robles, A.; Condor, M.; Caballero, J.; Morote, M.; Garcia, C.; Benites, M.

    1997-01-01

    Based on the compilation of pharmacopoeia methods, literature, manuals and other information developed in our laboratory, protocols have been prepared to carry out quality controls for radiodiagnosis agents (RDA), better known as kits and RDA labelled with Tc99m. Quality control protocols cover physicochemical and biological controls. Physicochemical controls described for RDA include physical characteristics, particle size and number, pH, chemical identification, humidity, tin II; whereas biological controls include sterility, acute toxicity and bacterial endotoxin determination (LAL). Physicochemical controls described for radiopharmaceuticals labelled with Tc99m are pH and radiochemical purity; while biological distribution is described as a biological control

  11. Design and Optimization of Capacitated Supply Chain Networks Including Quality Measures

    Directory of Open Access Journals (Sweden)

    Krystel K. Castillo-Villar

    2014-01-01

    Full Text Available This paper presents (1 a novel capacitated model for supply chain network design which considers manufacturing, distribution, and quality costs (named SCND-COQ model and (2 five combinatorial optimization methods, based on nonlinear optimization, heuristic, and metaheuristic approaches, which are used to solve realistic instances of practical size. The SCND-COQ model is a mixed-integer nonlinear problem which can be used at a strategic planning level to design a supply chain network that maximizes the total profit subject to meeting an overall quality level of the final product at minimum costs. The SCND-COQ model computes the quality-related costs for the whole supply chain network considering the interdependencies among business entities. The effectiveness of the proposed solution approaches is shown using numerical experiments. These methods allow solving more realistic (capacitated supply chain network design problems including quality-related costs (inspections, rework, opportunity costs, and others within a reasonable computational time.

  12. Quality of Life of siblings of children included in the autism spectrum.

    Science.gov (United States)

    Vieira, Camila Bolivar Martins; Fernandes, Fernanda Dreux Miranda

    2013-01-01

    To assess the Quality of Life in siblings of children of the autism spectrum through self-response to the World Health Organization Quality of Life (WHOQOL)-BREF questionnaire. Social-demographic data of 77 children included in the autism spectrum, aged 3 to 16 years, were collected. From these information, 21 older siblings, aged 16 to 30 years, were selected to answer said questionnaire, proposed by the World Health Organization Mental Health Program for quality of life evaluation. The data have shown a difference between the Environmental domain and the Physical and Psychological domains. The aspects related to the environment have an important role to the perception of quality of life self-declared by the subjects. However, family individuality, coping behaviors, social support, and assistance received directly interfere on this perception.

  13. Electronic quality control on dental x-rays equipment

    International Nuclear Information System (INIS)

    Pomares C, Martin

    1996-09-01

    A brief description of dental x-ray equipment is done. The non-invasive quality control is treated as than the responsibilities from the dentists to the patient and the equipment. A propose for quality control for dental x-ray equipment, film and developer is include

  14. Quality control of static irradiation processing products

    International Nuclear Information System (INIS)

    Bao Jianzhong; Chen Xiulan; Cao Hong; Zhai Jianqing

    2002-01-01

    Based on the irradiation processing practice of the nuclear technique application laboratory of Yangzhou Institute of Agricultural Science, the quality control of irradiation processing products is discussed

  15. Establishment for quality control of experimental animal

    International Nuclear Information System (INIS)

    Kim, Tae Hwan; Kim, Soo Kwan; Kim, Tae Kyoung

    1999-06-01

    Until now, because we have imported experimental animal from foreign experimental animal corporation, we could have saved money by establishing the quality control of animal in barrier system. In order to improve the quality of animal experiment and efficiency of biomedical study, it is indispensable to control many factors that effect in the experiment. Therefore, it is essential to organize the system of laboratory animal care for enhancing reliability and revivability of experimental results. The purpose of the present investigation was to establish the quality control system of experimental animals that we can provide good quality animals according to the experimental condition of each investigator although the exact quality control system to estimate the infection of bacteria and virus easily remains ill-defined yet. Accordingly, we established the useful quality control system for microbiologic monitoring and environmental monitoring to protect experimental animal from harmful bacteria and virus

  16. Establishment for quality control of experimental animal

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Tae Hwan; Kim, Soo Kwan; Kim, Tae Kyoung

    1999-06-01

    Until now, because we have imported experimental animal from foreign experimental animal corporation, we could have saved money by establishing the quality control of animal in barrier system. In order to improve the quality of animal experiment and efficiency of biomedical study, it is indispensable to control many factors that effect in the experiment. Therefore, it is essential to organize the system of laboratory animal care for enhancing reliability and revivability of experimental results. The purpose of the present investigation was to establish the quality control system of experimental animals that we can provide good quality animals according to the experimental condition of each investigator although the exact quality control system to estimate the infection of bacteria and virus easily remains ill-defined yet. Accordingly, we established the useful quality control system for microbiologic monitoring and environmental monitoring to protect experimental animal from harmful bacteria and virus.

  17. Quality of life and self-determination in students with disabilities included in regular classrooms

    Directory of Open Access Journals (Sweden)

    Jesús Miguel Muñoz Cantero

    2015-11-01

    Full Text Available At present, quality of life and self-determination begin to position itself as a key axis in interventions aimed at students with disabilities, motivating the interest of researchers and professionals to know their general well-being. This article evaluates the quality of life and self-determination of students with intellectual and developmental disabilities enrolled in regular schools. A case study methodology, descriptive-interpretative, is used through mixed data collection methods. The instruments used are Questionnaire for Assessment the Quality of Life in Teen Students (CCVA and ARC-INICO Scale for Assessment Self-Determination (for 14 students and interviews (for four teachers. A descriptive statistical analysis, contextualized by the extracted information from the interviews, was conducted. The results show high scores in different domains of quality of life, apart from emotional well-being, community inclusion and self-determination that are improvable. Adequate perception of students is observed about their ability to make decisions, choices and a good predisposition take control in different areas of their life. It is necessary to continue inquiring about the impact of educational environment, attitude and perception of teachers and the opportunities offered to students to act self-determined and increase their quality of life.

  18. Quality Control in Production Processes

    Directory of Open Access Journals (Sweden)

    Prístavka Miroslav

    2016-09-01

    Full Text Available The tools for quality management are used for quality improvement throughout the whole Europe and developed countries. Simple statistics are considered one of the most basic methods. The goal was to apply the simple statistical methods to practice and to solve problems by using them. Selected methods are used for processing the list of internal discrepancies within the organization, and for identification of the root cause of the problem and its appropriate solution. Seven basic quality tools are simple graphical tools, but very effective in solving problems related to quality. They are called essential because they are suitable for people with at least basic knowledge in statistics; therefore, they can be used to solve the vast majority of problems.

  19. Quality control of mammographic systems

    International Nuclear Information System (INIS)

    Espana Lopez, M. L.

    2001-01-01

    High quality in mammography is a difficult objective to achieve, that is the reason for what efforts are made in order to improve equipment, to offer good combinations screen-film, and professional staff dedicated to this technique [es

  20. Proposed quality control protocol of a dual energy bone densitometer from Spanish protocol for quality control of radiology

    International Nuclear Information System (INIS)

    Saez, F.; Benito, M. A.; Collado, P.; Saez, M.

    2011-01-01

    In this paper we propose additional testing to complete the tests by the Spanish Protocol for Quality Control of Diagnostic Radiology, taking into account the particular characteristics of these units, and including these tests in the estimation of patient dose dose assessment area. There is also the possibility to independently verify the quality control tests that are done automatically.

  1. Implementing self sustained quality control procedures in a clinical laboratory.

    Science.gov (United States)

    Khatri, Roshan; K C, Sanjay; Shrestha, Prabodh; Sinha, J N

    2013-01-01

    Quality control is an essential component in every clinical laboratory which maintains the excellence of laboratory standards, supplementing to proper disease diagnosis, patient care and resulting in overall strengthening of health care system. Numerous quality control schemes are available, with combinations of procedures, most of which are tedious, time consuming and can be "too technical" whereas commercially available quality control materials can be expensive especially for laboratories in developing nations like Nepal. Here, we present a procedure performed at our centre with self prepared control serum and use of simple statistical tools for quality assurance. The pooled serum was prepared as per guidelines for preparation of stabilized liquid quality control serum from human sera. Internal Quality Assessment was performed on this sample, on a daily basis which included measurement of 12 routine biochemical parameters. The results were plotted on Levey-Jennings charts and analysed with quality control rules, for a period of one month. The mean levels of biochemical analytes in self prepared control serum were within normal physiological range. This serum was evaluated every day along with patients' samples. The results obtained were plotted on control charts and analysed using common quality control rules to identify possible systematic and random errors. Immediate mitigation measures were taken and the dispatch of erroneous reports was avoided. In this study we try to highlight on a simple internal quality control procedure which can be performed by laboratories, with minimum technology, expenditure, and expertise and improve reliability and validity of the test reports.

  2. Employee quality, monitoring environment and internal control

    Directory of Open Access Journals (Sweden)

    Chunli Liu

    2017-03-01

    Full Text Available We investigate the effect of internal control employees (ICEs on internal control quality. Using special survey data from Chinese listed firms, we find that ICE quality has a significant positive influence on internal control quality. We examine the effect of monitoring on this result and find that the effect is more pronounced for firms with strict monitoring environments, especially when the firms implement the Chinese internal control regulation system (CSOX, have higher institutional ownership or attach greater importance to internal control. Our findings suggest that ICEs play an important role in the design and implementation of internal control systems. Our study should be of interest to both top managers who wish to improve corporate internal control quality and regulators who wish to understand the mechanisms of internal control monitoring.

  3. A numerical model including PID control of a multizone crystal growth furnace

    Science.gov (United States)

    Panzarella, Charles H.; Kassemi, Mohammad

    1992-01-01

    This paper presents a 2D axisymmetric combined conduction and radiation model of a multizone crystal growth furnace. The model is based on a programmable multizone furnace (PMZF) designed and built at NASA Lewis Research Center for growing high quality semiconductor crystals. A novel feature of this model is a control algorithm which automatically adjusts the power in any number of independently controlled heaters to establish the desired crystal temperatures in the furnace model. The control algorithm eliminates the need for numerous trial and error runs previously required to obtain the same results. The finite element code, FIDAP, used to develop the furnace model, was modified to directly incorporate the control algorithm. This algorithm, which presently uses PID control, and the associated heat transfer model are briefly discussed. Together, they have been used to predict the heater power distributions for a variety of furnace configurations and desired temperature profiles. Examples are included to demonstrate the effectiveness of the PID controlled model in establishing isothermal, Bridgman, and other complicated temperature profies in the sample. Finally, an example is given to show how the algorithm can be used to change the desired profile with time according to a prescribed temperature-time evolution.

  4. Software Quality Control at Belle II

    Science.gov (United States)

    Ritter, M.; Kuhr, T.; Hauth, T.; Gebard, T.; Kristof, M.; Pulvermacher, C.; Belle Software Group, II

    2017-10-01

    Over the last seven years the software stack of the next generation B factory experiment Belle II has grown to over one million lines of C++ and Python code, counting only the part included in offline software releases. There are several thousand commits to the central repository by about 100 individual developers per year. To keep a coherent software stack of high quality that it can be sustained and used efficiently for data acquisition, simulation, reconstruction, and analysis over the lifetime of the Belle II experiment is a challenge. A set of tools is employed to monitor the quality of the software and provide fast feedback to the developers. They are integrated in a machinery that is controlled by a buildbot master and automates the quality checks. The tools include different compilers, cppcheck, the clang static analyzer, valgrind memcheck, doxygen, a geometry overlap checker, a check for missing or extra library links, unit tests, steering file level tests, a sophisticated high-level validation suite, and an issue tracker. The technological development infrastructure is complemented by organizational means to coordinate the development.

  5. Developing methods of controlling quality costs

    OpenAIRE

    Gorbunova A. V.; Maximova O. N.; Ekova V. A.

    2017-01-01

    The article examines issues of managing quality costs, problems of applying economic methods of quality control, implementation of progressive methods of quality costs management in enterprises with the view of improving the efficiency of their evaluation and analysis. With the aim of increasing the effectiveness of the cost management mechanism, authors introduce controlling as a tool of deviation analysis from the standpoint of the process approach. A list of processes and corresponding eva...

  6. Fuel manufacture and quality control

    International Nuclear Information System (INIS)

    Roepenack, H.; Raab, K.

    1975-01-01

    The different steps in fuel and fuel element manufacturing from the conversion of UF 6 to UO 2 to the assembling of the whole fuel element are shortly described. Each of this fabrication steps must satisfy well-defined quality criteria which are checked in certain analyses or tests. (RB) [de

  7. Quality control concept for radioactive waste packages

    International Nuclear Information System (INIS)

    Warnecke, E.; Martens, B.R.; Odoj, R.

    1990-01-01

    In the Federal Republic of Germany a contract with the BfS for the performance of quality control measures is necessary. It is principally possible to apply two alternative methods: random checks on waste packages or qualification of conditioning processes with subsequent inspections. Priority is given to the control by the process qualification. Both methods have successfully been developed in the Federal Republic of Germany and can be applied. In the course of the qualification of conditioning processes it must be demonstrated by inactive and/or active runs that waste packages are produced which fulfil the waste acceptance requirements. The qualification results in the fixation of a handbook for the operation of the respective conditioning process including the process instrumentation and the operational margins. The qualified process will be inspected to assure the compliance of the actual operation with the conditions fixed in the handbook. (orig./DG)

  8. Quality Control in Mammography: Image Quality and Patient Doses

    International Nuclear Information System (INIS)

    Ciraj Bjelac, O.; Arandjic, D.; Boris Loncar, B.; Kosutic, D.

    2008-01-01

    Mammography is method of choice for early detection of breast cancer. The purpose of this paper is preliminary evaluation the mammography practice in Serbia, in terms of both quality control indicators, i.e. image quality and patient doses. The survey demonstrated considerable variations in technical parameters that affect image quality and patients doses. Mean glandular doses ranged from 0.12 to 2.8 mGy, while reference optical density ranged from 1.2 to 2.8. Correlation between image contrast and mean glandular doses was demonstrated. Systematic implementation of quality control protocol should provide satisfactory performance of mammography units and maintain satisfactory image quality and keep patient doses as low as reasonably practicable. (author)

  9. Quality control in the radioactive waste management

    International Nuclear Information System (INIS)

    Rzyski, B.M.

    1989-01-01

    Radioactive waste management as in industrial activities must mantain in all steps a quality control programme. This control extended from materials acquisition, for waste treatment, to the package deposition is one of the most important activities because it aims to observe the waste acceptance criteria in repositories and allows to guarantee the security of the nuclear facilities. In this work basic knowledges about quality control in waste management and some examples of adopted procedures in other countries are given. (author) [pt

  10. Control by quality: proposition of a typology.

    Science.gov (United States)

    Pujo, P; Pillet, M

    The application of Quality tools and methods in industrial management has always had a fundamental impact on the control of production. It influences the behavior of the actors concerned, while introducing the necessary notions and formalizations, especially for production systems with little or no automation, which constitute a large part of the industrial activity. Several quality approaches are applied in the workshop and are implemented at the level of the control. In this paper, the authors present a typology of the various approaches that have successively influenced control, such as statistical process control, quality assurance, and continuous improvement. First the authors present a parallel between production control and quality organizational structure. They note the duality between control, which is aimed at increasing productivity, and quality, which aims to satisfy the needs of the customer. They also note the hierarchical organizational structure of these two systems of management with, at each level, the notion of a feedback loop. This notion is fundamental to any kind of decision making. The paper is organized around the operational, tactical, and strategic levels, by describing for each level the main methods and tools for control by quality. The overview of these tools and methods starts at the operational level, with the Statistical Process Control, the Taguchi technique, and the "six sigma" approach. On the tactical level, we find a quality system approach, with a documented description of the procedures introduced in the firm. The management system can refer here to Quality Assurance, Total Productive Maintenance, or Management by Total Quality. The formalization through procedures of the rules of decision governing the process control enhances the validity of these rules. This leads to the enhancement of their reliability and to their consolidation. All this counterbalances the human, intrinsically fluctuating, behavior of the control

  11. Implementation of quality control systematics for personnel monitoring services

    International Nuclear Information System (INIS)

    Franco, J.O.A.

    1984-01-01

    The implementation of statistical quality control techniques used in industrial practise is proposed to dosimetric services. 'Control charts' and 'sampling inspection' are adapted respectively for control of measuring process and of dose results produced in routine. A chapter on Radiation Protection and Personnel Monitoring was included. (M.A.C.) [pt

  12. Sensometrics for Food Quality Control

    DEFF Research Database (Denmark)

    Brockhoff, Per B.

    2011-01-01

    The industrial development of innovative and succesful food items and the measuring of food quality in general is difficult without actually letting human beings evaluate the products using their senses at some point in the process. The use of humans as measurement instruments calls for special...... attention in the modelling and data analysis phase. In this paper the focus is on sensometrics – the „metric“ side of the sensory science field. The sensometrics field is introduced and related to the fields of statistics, chemometrics and psychometrics. Some of the most commonly used sensory testing...

  13. Computer controlled quality of analytical measurements

    International Nuclear Information System (INIS)

    Clark, J.P.; Huff, G.A.

    1979-01-01

    A PDP 11/35 computer system is used in evaluating analytical chemistry measurements quality control data at the Barnwell Nuclear Fuel Plant. This computerized measurement quality control system has several features which are not available in manual systems, such as real-time measurement control, computer calculated bias corrections and standard deviation estimates, surveillance applications, evaluaton of measurement system variables, records storage, immediate analyst recertificaton, and the elimination of routine analysis of known bench standards. The effectiveness of the Barnwell computer system has been demonstrated in gathering and assimilating the measurements of over 1100 quality control samples obtained during a recent plant demonstration run. These data were used to determine equaitons for predicting measurement reliability estimates (bias and precision); to evaluate the measurement system; and to provide direction for modification of chemistry methods. The analytical chemistry measurement quality control activities represented 10% of the total analytical chemistry effort

  14. Quality control of nuclear medicine instruments

    International Nuclear Information System (INIS)

    1984-11-01

    This document, which gives detailed guidance on the quality control of the various electronic instruments used for radiation detection and measurement in nuclear medicine, stems from the work of two Advisory Groups convened by the International Atomic Energy Agency (IAEA). A preliminary document, including recommended test schedules but lacking actual protocols for the tests, was drawn up by the first of these groups, meeting at the IAEA Headquarters in Vienna in 1979. A revised and extended version, incorporating recommended test protocols, was prepared by the second Group, meeting likewise in Vienna in 1982. This version is the model for the present text. The document should be of value to all nuclear medicine units, and especially to those in developing countries, in the initiation or revision of schemes for the quality control of their instruments. Its recommendations have provided the basis for instruction in two IAEA regional technical co-operation projects in the subject field, one initiated in 1981 for countries of Latin America and one initiated in 1982 for countries of Asia and the Pacific

  15. TRAINING SYSTEM OF FUTURE SPECIALISTS: QUALITY CONTROL

    Directory of Open Access Journals (Sweden)

    Vladimir A. Romanov

    2015-01-01

    Full Text Available The aim of the investigation is development of innovative strategy of quality control training of engineers and skilled workers (hereinafter – future specialists in educational professional organizations on the principles of social partnership.Methods. Theoretic: theoretic and methodological analysis, polytheoretic synthesis, modeling. Empirical: research and generalization of the system, process and competence – based approaches experience, experiment, observation, surveys, expert evaluation, SWOT-analysis as a method of strategic planning which is to identify the internal and external factors (socio-cultural of the organization surrounding.Results. The strategy of the development of the process of quality control training in educational professional organizations and a predictive model of the system of quality control training for future engineers and workers have been created on the analysis and synthesis of a quantitative specification of the quality, the obtained experience and success in control training of future specialists in educational professional organizations in recent economic and educational conditions.Scientific novelty. There has been built a predicative model of quality control training of future specialists to meet modern standards and the principles of social partnership; the control algorithm of the learning process, developed in accordance with the standards (international of quality ISO in the implementation of the quality control systems of the process approach (matrix-based responsibility, competence and remit of those responsible for the education process in the educational organization, the «problem» terms and diagnostic tools for assessing the quality of professional training of future specialists. The perspective directions of innovation in the control of the quality of future professionals training have been determined; the parameters of a comprehensive analysis of the state of the system to ensure the

  16. Quality control in nuclear fuel fabrication

    International Nuclear Information System (INIS)

    Abdelhalim, A.S.; Elsayed, A.A.; Shaaban, H.I.

    1988-01-01

    The department of metallurgy, NRC Inchass is embarking on a programme of on a laboratory scale, fuel pins containing uranium dioxide pellets are going to be produced. The department is making use of the expertise and equipment at present available and is going to utilize the new fuel pin fabrication unit which would be shortly in operation. The fabrication and testing of uranium dioxide pellets then gradually adapt them and develop, a national know how in this field. This would also involve building up of indigenous experience through proper training of qualified personnel. That are applied to ensure quality of U o 2 pellets, the techniques implemented, the equipment used and the specifications of the equipment presently available. The following parameters are subject to quality control tests: density. O/U ration, hydrogen content, microstructure, each property will be discussed, measurements related to U o 2 powders, including flow ability, bulk density, O/U ratio, bet surface area and water content will be critically discussed. Relevant tests to ensure Q C of pellets are reviewed. These include surface integrity, density, dimensions, microstructure.4 fig., 1 tab

  17. Tools for quality control of fingerprint databases

    Science.gov (United States)

    Swann, B. Scott; Libert, John M.; Lepley, Margaret A.

    2010-04-01

    Integrity of fingerprint data is essential to biometric and forensic applications. Accordingly, the FBI's Criminal Justice Information Services (CJIS) Division has sponsored development of software tools to facilitate quality control functions relative to maintaining its fingerprint data assets inherent to the Integrated Automated Fingerprint Identification System (IAFIS) and Next Generation Identification (NGI). This paper provides an introduction of two such tools. The first FBI-sponsored tool was developed by the National Institute of Standards and Technology (NIST) and examines and detects the spectral signature of the ridge-flow structure characteristic of friction ridge skin. The Spectral Image Validation/Verification (SIVV) utility differentiates fingerprints from non-fingerprints, including blank frames or segmentation failures erroneously included in data; provides a "first look" at image quality; and can identify anomalies in sample rates of scanned images. The SIVV utility might detect errors in individual 10-print fingerprints inaccurately segmented from the flat, multi-finger image acquired by one of the automated collection systems increasing in availability and usage. In such cases, the lost fingerprint can be recovered by re-segmentation from the now compressed multi-finger image record. The second FBI-sponsored tool, CropCoeff was developed by MITRE and thoroughly tested via NIST. CropCoeff enables cropping of the replacement single print directly from the compressed data file, thus avoiding decompression and recompression of images that might degrade fingerprint features necessary for matching.

  18. CONCRETE STRUCTURES' QUALITY CONTROL IN PRACTICE

    OpenAIRE

    Dolaček-Alduk, Zlata; Blanda, Miroslav

    2011-01-01

    The Croatian civil engineering is characterized by a lack of systematic approach to planning, control and quality assurance in all phases of project realization. The results obtained in establishing the quality management system in some segments of civil engineering production represent initial trends in solving this problem. Benefits are of two types: the achievement of quality for the contractor and obtaining that quaity is being achieved for clients. Execution of concrete structures is a c...

  19. Body Image and quality of life of senior citizens included in a cardiac rehabilitation program

    Directory of Open Access Journals (Sweden)

    Fernanda Vargas Amaral

    2013-12-01

    Full Text Available Most people who have to live with some kind of disease tend to adopt healthy habits and create new ways of seeing themselves. The aim of this study is to explore the relationship between the index of quality of life and self perception of patients included in a cardiovascular rehabilitation program in Florianopolis/Brazil. The sample consists of 24 subjects of 62 ± 1.3 years of age, who have coronary artery disease. The Minnesota Living With Heart Failure Questionnaire (MLHFQ was used to assess the quality of life, and to identify the degree of body image discontentment the Stunkard and Sorensen questionnaire (1993 was applied. Statistical analysis was made through statistics programs and the software SPSS 11.0. The degree of association between variables was studied with Kendall test. It was verified that the higher the BMI and the current body shape, the greatest the degree of body image dissatisfaction. The emotional symptoms also appear to be significantly correlated with a desire for a smaller body shape and with indicators of lower quality of life (r = 0474 = 0735, p major 0.05. The physical symptoms were also considerably associated with the emotional symptoms. These results suggest that the variables concerning the quality of life are meaningful to significant body image and satisfaction, which seems to correlate with fewer emotional problems and better facing of the disease. Cardiovascular Rehabilitation Programs that implement physical activity in daily habits proves to be a suitable tool for improving these ailments in this post-acute phase

  20. Predistortion control device and method, assembly including a predistortion control device

    NARCIS (Netherlands)

    Kokkeler, Andre B.J.

    2003-01-01

    A predistortion control device (1). The device has a first predistortion control input connectable to a power amplifier output (21); a second predistortion control input (11) connectable to a signal contact of a predistortion device; and a predistortion control output (12) connectable to a control

  1. A quality control manual for oral radiology

    International Nuclear Information System (INIS)

    Peixoto, J.E.; Ferreira, R.S.; Bessa, S.O.; Domingues, C.; Gomes, C.A.; Oliveira, S.L.G.; Ortiz, J.A.P.

    1988-01-01

    A quality control manual for oral radiology is showed. The X-ray equipment used for this activity is described, such as the X-ray tube, collimator. The high tension in X-ray tube, the spectra, the quality and the quantity of radiation and the X-ray intensity are also analysed. (C.G.C.) [pt

  2. Quality control of gamma radiation measuring systems

    International Nuclear Information System (INIS)

    Surma, M.J.

    2002-01-01

    The problem of quality control and assurance of gamma radiation measuring systems has been described in detail. The factors deciding of high quality of radiometric measurements as well as statistical testing and calibration of measuring systems have been presented and discussed

  3. Net analyte signal based statistical quality control

    NARCIS (Netherlands)

    Skibsted, E.T.S.; Boelens, H.F.M.; Westerhuis, J.A.; Smilde, A.K.; Broad, N.W.; Rees, D.R.; Witte, D.T.

    2005-01-01

    Net analyte signal statistical quality control (NAS-SQC) is a new methodology to perform multivariate product quality monitoring based on the net analyte signal approach. The main advantage of NAS-SQC is that the systematic variation in the product due to the analyte (or property) of interest is

  4. The regulatory maze of quality control

    International Nuclear Information System (INIS)

    Stone, T.I.

    1987-01-01

    The appropriateness of specific procedures within a quality control program becomes difficult to assess when an attempt is made to collate all of the available information. This task is discussed from the perspective of the Joint Commission (JCAH Accreditation Manual), HHS(quality assurance program recommendations), equipment manufacturers maintenance schedules, and radiology administrative cost concerns

  5. Quality Control Guidelines for SAM Biotoxin Methods

    Science.gov (United States)

    Learn more about quality control guidelines and recommendations for the analysis of samples using the pathogen methods listed in EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM).

  6. Quality Control Guidelines for SAM Radiochemical Methods

    Science.gov (United States)

    Learn more about quality control guidelines and recommendations for the analysis of samples using the radiochemistry methods listed in EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM).

  7. Quality Control Guidelines for SAM Pathogen Methods

    Science.gov (United States)

    Learn more about quality control guidelines and recommendations for the analysis of samples using the biotoxin methods listed in EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM).

  8. Quality Control Guidelines for SAM Chemical Methods

    Science.gov (United States)

    Learn more about quality control guidelines and recommendations for the analysis of samples using the chemistry methods listed in EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM).

  9. Metallographic quality control of welding and brazing

    International Nuclear Information System (INIS)

    Slaughter, G.M.

    1979-01-01

    The value of metallography in assuring integrity in the fabrication of metal and components in energy systems is summarized. Metallography also plays an integral role in quality control of welded and brazed joints

  10. Quality control during construction of power plants

    International Nuclear Information System (INIS)

    Hartstern, R.F.

    1982-01-01

    This paper traces the background and examines the necessity for a program to control quality during the construction phase of a power plant. It also attempts to point out considerations for making these programs cost effective

  11. Developing methods of controlling quality costs

    Directory of Open Access Journals (Sweden)

    Gorbunova A. V.

    2017-01-01

    Full Text Available The article examines issues of managing quality costs, problems of applying economic methods of quality control, implementation of progressive methods of quality costs management in enterprises with the view of improving the efficiency of their evaluation and analysis. With the aim of increasing the effectiveness of the cost management mechanism, authors introduce controlling as a tool of deviation analysis from the standpoint of the process approach. A list of processes and corresponding evaluation criteria in the quality management system of enterprises is introduced. Authors also introduce the method of controlling quality costs and propose it for the practical application, which allows them to determine useful and unnecessary costs at the existing operating plant. Implementing the proposed recommendations in the system of cost management at an enterprise will allow to improve productivity of processes operating and reduce wasted expense on the quality of the process on the basis of determining values of useful and useless costs of quality according to criteria of processes functioning in the system of quality management.

  12. Quality Assurance and Quality Control Practices for Rehabilitation of Sewer and Water Mains

    Science.gov (United States)

    As part of the US Environmental Protection Agency (EPA)’s Aging Water Infrastructure Research Program, several areas of research are being pursued, including a review of quality assurance and quality control (QA/QC) practices and acceptance testing during the installation of reha...

  13. Quality assurance and quality control in mammography: A review

    International Nuclear Information System (INIS)

    BenComo, Jose A.

    2000-01-01

    A mammogram is among the most technically demanding radiographic procedures. The early detection of breast cancer relies on the radiologist's ability to perceive subtle changes in the image that are only perceptible with high-quality imaging. Early detection of breast cancer is only as reliable as the mammogram with which a diagnosis is made, and a mammogram is only as accurate as the system that produces it. A quality assurance (QA) program maximizes the likelihood that the mammographic images will provide adequate diagnostic information for the least possible radiation exposure and cost to the patient. The QA program monitors each phase of operation of the imaging facility beginning with the request for an examination and ending with the interpretation of the referring physician and ensures that the imaging equipment used for the examination will yield the information desired. Because image quality is the most important technical aspect of mammography, this review summarizes the most important QA and quality control issues

  14. Quality control and analysis of radiotracer compounds

    International Nuclear Information System (INIS)

    Sheppard, G.; Thomson, R.

    1977-01-01

    Special emphasis was on the problems and errors possible in quality control and analysis. The principles underlying quality control were outlined, and analytical techniques applicable to radiotracers were described. Chapter concluded with a selection of examples showing the effects of impurities on the use of radiotracers. The subject of quality control and analysis was treated from the viewpoint of the user and those research workers who need to synthesize and analyze their own radiochemicals. The quality characteristics for radiotracers are of two kinds, valuable or attributive. These were discussed in the chapter. For counting low radioactive concentration, scintillation techniques are in general use, whereas ionization techniques are now used mainly for the measurement of high radioactive concentrations or large quantities of radioactivity, for scanning chromatograms, and a number of very specific purposes. Determination of radionuclidic purity was discussed. Use of radiotracers in pharmaceuticals were presented. 4 figures, 6 tables

  15. Quality control activities in the environmental radiology laboratory

    International Nuclear Information System (INIS)

    Llaurado, M.; Quesada, D.; Rauret, G.; Tent, J.; Zapata, D.

    2006-01-01

    During the last twenty years many analytical laboratories have implemented quality assurance systems. A quality system implementation requires documentation of all activities (technical and management), evaluation of these activities and its continual improvement. Implementation and adequate management of all the elements a quality system includes are not enough to guarantee quality of the analytical results generated at a time. That is the aim of a group of specific activities labelled as quality control activities. The Laboratori de Radiologia Ambiental (Environmental Radiology Laboratory; LRA) at the University of Barcelona was created in 1984 to carry out part of the quality control assays of the Environmental Radiology Monitoring Programs around some of the Spanish nuclear power plants, which are developed by the Servei Catala d'Activitats Energetiques (SCAR) and the Consejo de Seguridad Nuclear (CSN), organisations responsible for nuclear security and radiological protection. In these kind of laboratories, given the importance of the results they give, quality control activities become an essential aspect. In order to guarantee the quality of its analytical results, the LRA Direction decided to adopt the international standard UNE-EN ISO/IEC 17025 for its internal quality system and to accreditate some of the assays it carries out. In such as system, it is established, the laboratory shall monitor the validity of tests undertaken and data shall be recorded in such a way that trends are detectable. The present work shows the activities carried out in this way by the LRA, which are: Equipment control activities which in the special case of radiochemical techniques include measurement of backgrounds and blanks as well as periodical control of efficiency and resolution. Activities to assure the specifications settled by method validation, which are testing of reference materials and periodical analysis of control samples. Evaluation of the laboratory work quality

  16. An Austrian framework for PET quality control

    International Nuclear Information System (INIS)

    Nicoletti, R.; Dobrozemsky, G.; Minear, G.; Bergmann, H.

    2002-01-01

    Full text: The European patient protection directive (97/43 EURATOM) requires regular routine quality control (QC) of PET imaging devices. Since no standards were available covering this area and in order to comply with the directive a joint working party of the Austrian societies of nuclear medicine and of medical physics have developed a set of procedures suitable for both dedicated PET scanners and gamma cameras operating in coincidence mode (GCPET). The routine procedures proposed include both manufacturer recommended procedures and tests for specific parameters and calibration procedures. Wherever possible, procedures adapted or derived from NEMA standards publication NU 2-2001 were used to permit direct comparison with specified parameters of image quality. For dedicated PET scanners the most important procedures are the checking of detector sensitivities and the attenuation calibration scan. With full ring scanners the attenuation calibration scan is a blank scan, with partial ring devices a special attenuation calibration phantom has to be used. Test protocols are specific to manufacturer and scanner type. They are usually performed automatically overnight. In addition, some instruments require special calibrations, e.g. gain adjustments or coincidence timing calibration. GCPET procedures include the frequent assessment in coincidence mode of detector uniformity, energy resolution and system sensitivity. Common to both dedicated PET and GCPET are the regular quarterly assessment of tomographic spatial resolution and the calibration of the system for quantitative measurements. As a total performance test for both systems assessment of image quality following NU 2-2001 was included, to be carried out after major system changes or repairs. The suite of QC procedures was tested on several dedicated PET and GCPET systems including all major manufacturers' systems. Due to missing hardware or software not all tests could be performed on all systems. Some of the

  17. Quality control in 99m technetium radiopharmaceuticals

    International Nuclear Information System (INIS)

    Leon Cabana, Alba

    1994-01-01

    This work means about the quality control in Tc radiopharmaceuticals preparation at hospitalary levels. Several steps must be used in a Nuclear Medicine Laboratory, such as proceeding,radiopharmaceuticals kits preparation, and dispensation materials,glasses,stopper,physical aspects,identification,ph control,storage,and reactif kits

  18. QMRAcatch: Microbial Quality Simulation of Water Resources including Infection Risk Assessment.

    Science.gov (United States)

    Schijven, Jack; Derx, Julia; de Roda Husman, Ana Maria; Blaschke, Alfred Paul; Farnleitner, Andreas H

    2015-09-01

    Given the complex hydrologic dynamics of water catchments and conflicts between nature protection and public water supply, models may help to understand catchment dynamics and evaluate contamination scenarios and may support best environmental practices and water safety management. A catchment model can be an educative tool for investigating water quality and for communication between parties with different interests in the catchment. This article introduces an interactive computational tool, QMRAcatch, that was developed to simulate concentrations in water resources of , a human-associated microbial source tracking (MST) marker, enterovirus, norovirus, , and as target microorganisms and viruses (TMVs). The model domain encompasses a main river with wastewater discharges and a floodplain with a floodplain river. Diffuse agricultural sources of TMVs that discharge into the main river are not included in this stage of development. The floodplain river is fed by the main river and may flood the plain. Discharged TMVs in the river are subject to dilution and temperature-dependent degradation. River travel times are calculated using the Manning-Gauckler-Strickler formula. Fecal deposits from wildlife, birds, and visitors in the floodplain are resuspended in flood water, runoff to the floodplain river, or infiltrate groundwater. Fecal indicator and MST marker data facilitate calibration. Infection risks from exposure to the pathogenic TMVs by swimming or drinking water consumption are calculated, and the required pathogen removal by treatment to meet a health-based quality target can be determined. Applicability of QMRAcatch is demonstrated by calibrating the tool for a study site at the River Danube near Vienna, Austria, using field TMV data, including a sensitivity analysis and evaluation of the model outcomes. Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.

  19. Exposure parameters in fluoroscopy equipment. Quality control

    International Nuclear Information System (INIS)

    Alonso, M.; Castaneda, M.J.; Matorras, P.; Diaz-Caneja, N.; Gutierrez, I.

    1992-01-01

    Within the quality control program in Diagnostic Radiology currently being undertaken at the 'Marques de Valdecilla' University Hospital, the corresponding specification and procedure prototypes for the control of conventional radioscopy equipment have been elaborated and applied. This paper presents the values proposed in the specifications and those obtained for the following radioscopy equipment parameters: reference kerma, and its reproducibility, kerma linearity, maximum kerma at the skin, and total filtration. The results obtained indicate that the equipment studied could comply with specified requirements if a Maintenance Program were to be implemented in coordination with the Quality Control Program. (author)

  20. 40 CFR 81.17 - Metropolitan Los Angeles Air Quality Control Region.

    Science.gov (United States)

    2010-07-01

    ... Quality Control Regions § 81.17 Metropolitan Los Angeles Air Quality Control Region. The Metropolitan Los Angeles Air Quality Control Region consists of the following territorial area (including the territorial... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Metropolitan Los Angeles Air Quality...

  1. 76 FR 81986 - Honeywell International, Inc., Automation and Control Solutions Division, Including On-Site...

    Science.gov (United States)

    2011-12-29

    ..., Inc., Automation and Control Solutions Division, Including On-Site Leased Workers From Manpower...., Automation and Control Solutions Division. The Department has determined that these workers were sufficiently...., Automation and Control Solutions Division, including on-site leased workers from Manpower, Spherion...

  2. [Evaluation of the quality control system in blood transfusion service].

    Science.gov (United States)

    Jovanović, R

    2000-01-01

    Implementation of quality system improvement at the Blood Transfusion Institute Novi Sad, included adjustments in practice to the request of ISO 9001 standard. Quality improvement must be a permanent activity of the Institute. The audit is a management tool for monitoring the quality assurance system and is either a quality audit or a medical audit. A well planned, comprehensive quality audit covers each activity of the Blood Transfusion Institute. The procedures may be internal or external. Quality manager is responsible for annual internal quality audits. The purpose of internal audits is to check the efficiency of the quality system in terms of realization of quality policy, fulfullment of designed targets and implementation of quality system documents. An internal quality audit is performed in accordance with the procedure and audit findings are reported to the management in a form of internal quality report as a part of quality system review. The findings must be communicated to all persons responsible for the controlled area. Quality manager can initiate an internal quality audit whenever it is realized that problems about the quality system have occurred. Audits are conducted by the quality manager or an audit team. The accurate list of internal auditors is kept in the Institute archive. Medical audit carried out by a transfusion committee, evaluates the quality of blood transfusion for determining the degree of compliance with established local or national guidelines, in order to promote optimal transfusion practice. Audits are not only used for determining further quality management activities, but also make basis for creating and maintenance of excellent relations with product and service users. Considering all this, Blood Transfusion Institute exceeds the requirements of ISO 9000 standards series.

  3. A Total Quality-Control Plan with Right-Sized Statistical Quality-Control.

    Science.gov (United States)

    Westgard, James O

    2017-03-01

    A new Clinical Laboratory Improvement Amendments option for risk-based quality-control (QC) plans became effective in January, 2016. Called an Individualized QC Plan, this option requires the laboratory to perform a risk assessment, develop a QC plan, and implement a QC program to monitor ongoing performance of the QC plan. Difficulties in performing a risk assessment may limit validity of an Individualized QC Plan. A better alternative is to develop a Total QC Plan including a right-sized statistical QC procedure to detect medically important errors. Westgard Sigma Rules provides a simple way to select the right control rules and the right number of control measurements. Copyright © 2016 Elsevier Inc. All rights reserved.

  4. Quality Control and Quality Assurance of Radiation Oncology

    International Nuclear Information System (INIS)

    Abaza, A.

    2016-01-01

    Radiotherapy (RT) has played important roles in cancer treatment for more than one century. The development of RT techniques allows high-dose irradiation to tumors while reducing the radiation doses delivered to surrounding normal tissues. However, RT is a complex process and involves understanding of the principles of medical physics, radiobiology, radiation safety, dosimetry, radiation treatment planning, simulation and interaction of radiation with other treatment modalities. Each step in the integrated process of RT needs quality control and quality assurance (QA) to prevent errors and to ensure that patients will receive the prescribed treatment correctly. The aim of this study is to help the radio therapists in identifying a system for QA that balances patient safety and quality with available resources. Recent advances in RT focus on the need for a systematic RT QA program that balances patient safety and quality with available resources. It is necessary to develop more formal error mitigation and process analysis methods, such as failure mode and effect analysis (FMEA), to focus available QA resources optimally on the process components. External audit programs are also effective. Additionally, Clinical trial QA has a significant role in enhancing the quality of care. The International Atomic Energy Agency (IAEA) has operated both an on-site and off-site postal dosimetry audit to improve practice and to assure the dose from RT equipment. Both postal dosimetry audit and clinical trial RTQA, especially for advanced technologies, in collaboration with global networks, will serve to enhance patient safety and quality of care

  5. Quality control of rain data used for urban runoff systems

    DEFF Research Database (Denmark)

    Jørgensen, H. K.; Rosenørn, S.; Madsen, Henrik

    1998-01-01

    for collection and quality control of rain data from a network of tipping bucket rain gauges in Denmark carried out by the Danish Meteorological Institute. During rain, the RIMCO gauge counts the number of tips teach of 0.2 mm of precipitation) every minute, The quality control of the rain data includes...... an automatic and a manual bit marking, where the automatic control basically is pointing out minutes with extreme intensities. In the manual control, the maximum intensities as well as the daily totals of precipitation are inspected, using weather charts, intensity plots and precipitation sums of nearby...

  6. Development of the gaharu oil quality control

    International Nuclear Information System (INIS)

    Chong Saw Peng; Mohd Fajri Osman; Shyful Azizi Abdul Rahman; Khairuddin Abdul Rahim; Mat Rasol Awang

    2010-01-01

    Gaharu (Agar wood) is a secondary metabolite produces by the Aquilaria spp. and accumulates in the plant cell in oleoresin form. The essential oil known as gaharu oil can be extracted from this oleoresin gaharu via varies extraction method such as the water distillation, solvent extraction, pressurize extraction and etc. The gaharu oil extracted through different methods will give different fragrances. Besides, different source of materials will also give different in chemical profiles. In gaharu oil trading market, most of the buyers request quality assurance from the gaharu oil manufacturer to assure the gaharu oil purchased meets their standard requirement. Since there is a demand on gaharu oil quality assurance then it become a need to develop the gaharu oil quality control method in order to have a standard quality control of gaharu oil presented in a certificate of analysis and verified by laboratory. (author)

  7. Requirements for quality control of analytical data

    International Nuclear Information System (INIS)

    Westmoreland, R.D.; Bartling, M.H.

    1990-07-01

    The National Contingency Plan (NCP) of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) provides procedures for the identification, evaluation, and remediation of past hazardous waste disposal sites. The Hazardous Materials Response section of the NCP consists of several phases: Preliminary Assessment, Site Inspection, Remedial Investigation, Feasibility Study, Remedial Design, and Remedial Action. During any of these phases, analysis of soil, water, and waste samples may be performed. The Hazardous Waste Remedial Actions Program (HAZWRAP) is involved in performing field investigations and sample analyses pursuant to the NCP for the US Department of Energy and other federal agencies. The purpose of this document is to specify the requirements of Martin Marietta Energy Systems, Inc., for the control of accuracy, precision, and completeness of samples and data from the point of collection through analysis. Requirements include data reduction and reporting of resulting environmentally related data. Because every instance and concern may not be addressed in this document, HAZWRAP subcontractors are encouraged to discuss any questions with the Analytical Quality Control Specialist (AQCS) and the HAZWRAP Project Manager. This revision supercedes all other versions of this document

  8. Quality control in diagnostic radiology - patient dosimetry

    Energy Technology Data Exchange (ETDEWEB)

    Prlic, I; Radalj, Z; Brumen, V; Cerovac, H [Institute for Medical Research and Occupational Health, Laboratory for Radiation Protection and Dosimetry, Zagreb (Croatia); Gladic, J [Institute for Physics, Laboratory for Solid State Physics, Zagreb (Croatia); Tercek, V [Clinical Hospital Sisters of Mercy, Health Physics Department, Zagreb (Croatia)

    1997-12-31

    In order to establish the Quality Criteria for diagnostic radiographic images in the radiology departments in Republic of Croatia we have started the several Quality Control projects on the field. The measurements are performed according to some methodology recommendations in our law but the methodology, measurement principles, measurement equipment, phantoms, measurable parameters for the good use by radiographers, statistical and numerical evaluation, dosimetric philosophy etc. where first recognized as a private/or group hazard of each person involved in the procedure of evaluation of diagnostic radiology images/diagnosis. The important quality elements of the imaging process are: the diagnostic quality of the radiographic image, the radiation dose to the patient and the choice of the radiographic technique. This depends on the x-ray unit (tube) radiation quality, image processing quality and final image evaluation quality. In this paper we will show how the Quality Control measurements can be easily connected to the dose delivered to the patient for the known diagnostic procedure and how this can be used by radiographers in their daily work. The reproducibility of the x-ray generator was checked before the service calibration and after the service calibration. The table of kV dependence and output dose per mAs was calculated and the ESD (entrance surface dose) was measured/calculated for the specific diagnostic procedure. After the phantom calculation were made and the dose prediction for the given procedure was done, measurements were done on the patients (digital dosemeters, TLD and film dosemeter combinations). We are claiming that there is no need to measure each patient if the proper Quality Control measurements are done and the proper table of ESD for each particular x-ray tube in diagnostic departments is calculated for the radiographers daily use. (author). 1 example, 1 fig., 13 refs.

  9. Quality control of radiation therapy in clinical trials

    International Nuclear Information System (INIS)

    Kramer, S.; Lustig, R.; Grundy, G.

    1983-01-01

    The RTOG is a group of participating institutions which has a major interest in furthering clinical radiation oncology. They have formulated protocols for clinical investigation in which radiation therapy is the major modality of treatment. In addition, other modalities, such as chemotherapy, radiation sensitizers, and hyperthermia, are used in combined approach to cancer. Quality control in all aspects of patient management is necessary to insure quality data. These areas include evaluation of pathology, physics, and dosimetry, and clinical patient data. Quality control is both time consuming and expensive. However, by dividing these tasks into various levels and time frames, by using computerized data-control mechanisms, and by employing appropriate levels of ancillary personnel expertise, quality control can improve compliance and decrease the cost of investigational trials

  10. Quality control in paediatric nuclear medicine

    International Nuclear Information System (INIS)

    Fischer, S.; Hahn, K.

    1997-01-01

    Nuclear medicine examinations in children require a maximum in quality. This is true for the preparation of the child and parents, the imaging procedure, processing and documentation. It is necessary that quality control through all steps is performed regularly. The aim must be that the children receive a minimum radiation dose, while there needs to be a high quality in imaging and clinical information from the study. Furthermore the child should not be too much psychologically affected by the nuclear medicine examination. (orig.) [de

  11. Quality Assurance and Quality Control in TLD Measurement

    International Nuclear Information System (INIS)

    Bhuiyan, S.I.; Qronfla, M.M.; Abulfaraj, W.H.; Kinsara, A.A.; Taha, T.M.; Molla, N.I.; Elmohr, S.M.

    2008-01-01

    TLD technique characterized by high precision and reproducibility of dose measurement is presented by addressing pre-readout annealing, group sorting, dose evaluation, blind tests, internal dose quality audit and external quality control audits. Two hundred and forty TLD chips were annealed for 1 hour at 4000 degree C followed by 2 h at 1000 degree C. After exposure of 1 mGy from 90 Sr irradiator TLDs were subjected to pre-readout annealing at 1000 degree C, then readout, sorted into groups each with nearly equal sensitivity. Upon repeating the procedures, TLDs having response >3.5% from group mean were dropped to assuring group stability. Effect of pre-readout annealing has been studied. Series of repeated measurements were conducted to stabilize calibration procedures and DCF generation using SSDL level 137 Cs calibrator, dose master, ionization chambers. Performed internal dose quality audits, blind tests and validated by external QC tests with King Abdulaziz City of Science and Technology

  12. Frontiers in statistical quality control 11

    CERN Document Server

    Schmid, Wolfgang

    2015-01-01

    The main focus of this edited volume is on three major areas of statistical quality control: statistical process control (SPC), acceptance sampling and design of experiments. The majority of the papers deal with statistical process control, while acceptance sampling and design of experiments are also treated to a lesser extent. The book is organized into four thematic parts, with Part I addressing statistical process control. Part II is devoted to acceptance sampling. Part III covers the design of experiments, while Part IV discusses related fields. The twenty-three papers in this volume stem from The 11th International Workshop on Intelligent Statistical Quality Control, which was held in Sydney, Australia from August 20 to August 23, 2013. The event was hosted by Professor Ross Sparks, CSIRO Mathematics, Informatics and Statistics, North Ryde, Australia and was jointly organized by Professors S. Knoth, W. Schmid and Ross Sparks. The papers presented here were carefully selected and reviewed by the scientifi...

  13. Quality control procedures in positron tomography

    International Nuclear Information System (INIS)

    Spinks, T.; Jones, T.; Heather, J.; Gilardi, M.

    1989-01-01

    The derivation of physiological parameters in positron tomography relies on accurate calibration of the tomograph. Normally, the calibration relates image pixel count density to the count rate from an external blood counter per unit activity concentration in each device. The quality control of the latter is simple and relies on detector stability assessed by measurement of a standard source of similar geometry to a blood sample. The quality control of the tomographic data depends on (i) detector stability, (ii) uniformity of calibration and normalisation sources and (iii) reproducibility of the attenuation correction procedure. A quality control procedure has been developed for an 8 detector ring (15 transaxial plane) tomograph in which detector response is assessed by acquiring data from retractable transmission ring sources. These are scanned daily and a print out of detector efficiencies is produced as well as changes from a given data. This provides the raw data from which decisions on recalibration or renormalisation are made. (orig.)

  14. Quality control of the activity meter

    International Nuclear Information System (INIS)

    Rodrigues, Marlon da Silva Brandão; Sá, Lídia Vasconcelos de

    2017-01-01

    Objective: To carry out a comparative analysis of national and international standards regarding the quality control of the activity meter used in Nuclear Medicine Services in Brazil. Material and methods: Quality control protocols from the International Atomic Energy Agency (IAEA), American Association of Physicists in Medicine (AAPM) and International Electrotechnical Commission (IEC) were pointed out and compared with requirements from both regulatory Brazilian agencies, National Surveillance Agency (ANVISA) and National Nuclear Energy Commission (CNEN). Results: The daily routine tests recommended by the regulatory agencies do not have significant differences; in contrast the tests with higher periodicities like (accuracy, linearity and precision) have differences discrepant. Conclusion: In view of the comparative analysis carried out, it is suggested that the national recommendations for the quality control tests of the activity meter should be checked and evaluated, with emphasis on the semiannual and annual periodicity tests. (author)

  15. Quality control of 11C-carfentanil

    International Nuclear Information System (INIS)

    Zhang Xiaojun; Zhang Jinming; Tian Jiahe; Xiang Xiaohui

    2013-01-01

    To study the quality control of 11 C-Carfentanil injection, physical, chemical and biological identification were used. The chemical and radiochemical purity of 11 C-Carfentanil Injection were detected by HPLC and Flower Count system; measured the quantity of product by LC-MS, specific activity was calculated later; The PTS was used to detect endotoxin, and other quality control methods were put up to guarantee the security of its clinical application. The produce appeared colorless and transparent, the radiochemical purity was more than 98%, content of the endotoxin was less than 5 EU/mL. The result showed that 11 C-Carfentanil injection had fulfilled pharmaceutical quality control request and could be applied safely to animal experiment and clinical diagnosis. (authors)

  16. Protein quality control in the nucleus

    DEFF Research Database (Denmark)

    Nielsen, Sofie V.; Poulsen, Esben Guldahl; Rebula, Caio A.

    2014-01-01

    to aggregate, cells have evolved several elaborate quality control systems to deal with these potentially toxic proteins. First, various molecular chaperones will seize the misfolded protein and either attempt to refold the protein or target it for degradation via the ubiquitin-proteasome system...... to be particularly active in protein quality control. Thus, specific ubiquitin-protein ligases located in the nucleus, target not only misfolded nuclear proteins, but also various misfolded cytosolic proteins which are transported to the nucleus prior to their degradation. In comparison, much less is known about...... these mechanisms in mammalian cells. Here we highlight recent advances in our understanding of nuclear protein quality control, in particular regarding substrate recognition and proteasomal degradation....

  17. Analytic Methods Used in Quality Control in a Compounding Pharmacy.

    Science.gov (United States)

    Allen, Loyd V

    2017-01-01

    Analytical testing will no doubt become a more important part of pharmaceutical compounding as the public and regulatory agencies demand increasing documentation of the quality of compounded preparations. Compounding pharmacists must decide what types of testing and what amount of testing to include in their quality-control programs, and whether testing should be done in-house or outsourced. Like pharmaceutical compounding, analytical testing should be performed only by those who are appropriately trained and qualified. This article discusses the analytical methods that are used in quality control in a compounding pharmacy. Copyright© by International Journal of Pharmaceutical Compounding, Inc.

  18. Proteomics Quality Control: Quality Control Software for MaxQuant Results.

    Science.gov (United States)

    Bielow, Chris; Mastrobuoni, Guido; Kempa, Stefan

    2016-03-04

    Mass spectrometry-based proteomics coupled to liquid chromatography has matured into an automatized, high-throughput technology, producing data on the scale of multiple gigabytes per instrument per day. Consequently, an automated quality control (QC) and quality analysis (QA) capable of detecting measurement bias, verifying consistency, and avoiding propagation of error is paramount for instrument operators and scientists in charge of downstream analysis. We have developed an R-based QC pipeline called Proteomics Quality Control (PTXQC) for bottom-up LC-MS data generated by the MaxQuant software pipeline. PTXQC creates a QC report containing a comprehensive and powerful set of QC metrics, augmented with automated scoring functions. The automated scores are collated to create an overview heatmap at the beginning of the report, giving valuable guidance also to nonspecialists. Our software supports a wide range of experimental designs, including stable isotope labeling by amino acids in cell culture (SILAC), tandem mass tags (TMT), and label-free data. Furthermore, we introduce new metrics to score MaxQuant's Match-between-runs (MBR) functionality by which peptide identifications can be transferred across Raw files based on accurate retention time and m/z. Last but not least, PTXQC is easy to install and use and represents the first QC software capable of processing MaxQuant result tables. PTXQC is freely available at https://github.com/cbielow/PTXQC .

  19. The Study on quality control of nuclear power installation project

    International Nuclear Information System (INIS)

    Wu Jie

    2008-01-01

    The quality planning, quality assurance and quality control are discussed by applying the quality control (QC) theory and combining the real situation of the Qinshan II project. This paper is practical and plays an active role in instruction of project quality control by applying the above QC theory and control techniques. (authors)

  20. Automatic generation control with thyristor controlled series compensator including superconducting magnetic energy storage units

    Directory of Open Access Journals (Sweden)

    Saroj Padhan

    2014-09-01

    Full Text Available In the present work, an attempt has been made to understand the dynamic performance of Automatic Generation Control (AGC of multi-area multi-units thermal–thermal power system with the consideration of Reheat turbine, Generation Rate Constraint (GRC and Time delay. Initially, the gains of the fuzzy PID controller are optimized using Differential Evolution (DE algorithm. The superiority of DE is demonstrated by comparing the results with Genetic Algorithm (GA. After that performance of Thyristor Controlled Series Compensator (TCSC has been investigated. Further, a TCSC is placed in the tie-line and Superconducting Magnetic Energy Storage (SMES units are considered in both areas. Finally, sensitivity analysis is performed by varying the system parameters and operating load conditions from their nominal values. It is observed that the optimum gains of the proposed controller need not be reset even if the system is subjected to wide variation in loading condition and system parameters.

  1. A quality control program for radiation sources

    International Nuclear Information System (INIS)

    Almeida, C.E. de; Sibata, C.H.; Cecatti, E.R.; Kawakami, N.S.; Alexandre, A.C.; Chiavegatti Junior, M.

    1982-01-01

    An extensive quality control program was established covering the following areas: physical parameters of the therapeutical machines, dosimetric standards, preventive maintenance of radiation sources and measuring instruments. A critical evaluation of this program was done after two years (1977-1979) of routine application and the results will be presented. The fluctuation on physical parameters strongly supports the efforts and cost of a quality control program. This program has certainly improved the accuracy required on the delivery of the prescribed dose for radiotherapy treatment. (Author) [pt

  2. Quality control of nuclear medicine instruments 1991

    International Nuclear Information System (INIS)

    1991-05-01

    This document gives detailed guidance on the quality control of various instruments used in nuclear medicine. A first preliminary document was drawn up in 1979. A revised and extended version, incorporating recommended procedures, test schedules and protocols was prepared in 1982. The first edition of ''Quality Control of Nuclear Medicine Instruments'', IAEA-TECDOC-317, was printed in late 1984. Recent advances in the field of nuclear medicine imaging made it necessary to add a chapter on Camera-Computer Systems and another on SPECT Systems. Figs and tabs

  3. Quality control of nuclear medicine instruments, 1991

    International Nuclear Information System (INIS)

    1996-12-01

    This document gives detailed guidance on the quality control of various instruments used in nuclear medicine. A first preliminary document was drawn up in 1979. A revised and extended version, incorporating recommended procedures, test schedules and protocols was prepared in 1982. The first edition of 'Quality Control of Nuclear Medicine Instruments', IAEA-TECDOC-317, was printed in late 1984. Recent advances in the field of nuclear medicine imaging made it necessary to add a chapter on Camera-Computer Systems and another on SPECT Systems

  4. HPLC for quality control of polyimides

    Science.gov (United States)

    Young, P. R.; Sykes, G. F.

    1979-01-01

    High Pressure Liquid Chromatography (HPLC) as a quality control tool for polyimide resins and prepregs are presented. A data base to help establish accept/reject criteria for these materials was developed. This work is intended to supplement, not replace, standard quality control tests normally conducted on incoming resins and prepregs. To help achieve these objectives, the HPLC separation of LARC-160 polyimide precursor resin was characterized. Room temperature resin aging effects were studied. Graphite reinforced composites made from fresh and aged resin were fabricated and tested to determine if changes observed by HPLC were significant.

  5. Quality control and quality assurance in individual monitoring of ionising radiations

    International Nuclear Information System (INIS)

    Dutt, J.C.; Lindborg, L.

    1994-01-01

    This paper describes the programmes and approaches that are to be considered in developing and introducing quality assurance and quality control procedures in individual monitoring services. Quality assurance and quality control in individual monitoring services are essential to maintain quality and are of increasing importance in order to meet the requirements of national regulations and international standards and guidelines. It is recommended here that all organisations offering individual monitoring services should run their services based on the principles of Quality System as given in the European Standard EN45001 and maintain a property resources QA/QC programme as an integral part of their operations. All aspects of QA/QC in individual monitoring services starting from the initial selection, installation, calibration, and operation to the final products including dose reporting, dose record keeping, dealing with customers' complaints and product liability issues have been discussed. (Author)

  6. Technical quality control - constancy controls for digital mammography systems

    International Nuclear Information System (INIS)

    Pedersen, K.; Landmark, I.D.; Bredholt, K.; Hauge, I.H.R.

    2009-04-01

    To ensure the quality of mammographic images, so-called constancy control tests are performed frequently. The report contains a programme for constancy control of digital mammography systems, encompassing the mammography unit, computed radiography (CR) systems, viewing conditions and displays, printers, and procedures for data collection for patient dose calculations. (Author)

  7. A framework for automated contour quality assurance in radiation therapy including adaptive techniques

    International Nuclear Information System (INIS)

    Altman, M B; Kavanaugh, J A; Wooten, H O; Green, O L; DeWees, T A; Gay, H; Thorstad, W L; Li, H; Mutic, S

    2015-01-01

    Contouring of targets and normal tissues is one of the largest sources of variability in radiation therapy treatment plans. Contours thus require a time intensive and error-prone quality assurance (QA) evaluation, limitations which also impair the facilitation of adaptive radiotherapy (ART). Here, an automated system for contour QA is developed using historical data (the ‘knowledge base’). A pilot study was performed with a knowledge base derived from 9 contours each from 29 head-and-neck treatment plans. Size, shape, relative position, and other clinically-relevant metrics and heuristically derived rules are determined. Metrics are extracted from input patient data and compared against rules determined from the knowledge base; a computer-learning component allows metrics to evolve with more input data, including patient specific data for ART. Nine additional plans containing 42 unique contouring errors were analyzed. 40/42 errors were detected as were 9 false positives. The results of this study imply knowledge-based contour QA could potentially enhance the safety and effectiveness of RT treatment plans as well as increase the efficiency of the treatment planning process, reducing labor and the cost of therapy for patients. (paper)

  8. An automated DICOM database capable of arbitrary data mining (including radiation dose indicators) for quality monitoring.

    Science.gov (United States)

    Wang, Shanshan; Pavlicek, William; Roberts, Catherine C; Langer, Steve G; Zhang, Muhong; Hu, Mengqi; Morin, Richard L; Schueler, Beth A; Wellnitz, Clinton V; Wu, Teresa

    2011-04-01

    The U.S. National Press has brought to full public discussion concerns regarding the use of medical radiation, specifically x-ray computed tomography (CT), in diagnosis. A need exists for developing methods whereby assurance is given that all diagnostic medical radiation use is properly prescribed, and all patients' radiation exposure is monitored. The "DICOM Index Tracker©" (DIT) transparently captures desired digital imaging and communications in medicine (DICOM) tags from CT, nuclear imaging equipment, and other DICOM devices across an enterprise. Its initial use is recording, monitoring, and providing automatic alerts to medical professionals of excursions beyond internally determined trigger action levels of radiation. A flexible knowledge base, aware of equipment in use, enables automatic alerts to system administrators of newly identified equipment models or software versions so that DIT can be adapted to the new equipment or software. A dosimetry module accepts mammography breast organ dose, skin air kerma values from XA modalities, exposure indices from computed radiography, etc. upon receipt. The American Association of Physicists in Medicine recommended a methodology for effective dose calculations which are performed with CT units having DICOM structured dose reports. Web interface reporting is provided for accessing the database in real-time. DIT is DICOM-compliant and, thus, is standardized for international comparisons. Automatic alerts currently in use include: email, cell phone text message, and internal pager text messaging. This system extends the utility of DICOM for standardizing the capturing and computing of radiation dose as well as other quality measures.

  9. A tool to include gamma analysis software into a quality assurance program.

    Science.gov (United States)

    Agnew, Christina E; McGarry, Conor K

    2016-03-01

    To provide a tool to enable gamma analysis software algorithms to be included in a quality assurance (QA) program. Four image sets were created comprising two geometric images to independently test the distance to agreement (DTA) and dose difference (DD) elements of the gamma algorithm, a clinical step and shoot IMRT field and a clinical VMAT arc. The images were analysed using global and local gamma analysis with 2 in-house and 8 commercially available software encompassing 15 software versions. The effect of image resolution on gamma pass rates was also investigated. All but one software accurately calculated the gamma passing rate for the geometric images. Variation in global gamma passing rates of 1% at 3%/3mm and over 2% at 1%/1mm was measured between software and software versions with analysis of appropriately sampled images. This study provides a suite of test images and the gamma pass rates achieved for a selection of commercially available software. This image suite will enable validation of gamma analysis software within a QA program and provide a frame of reference by which to compare results reported in the literature from various manufacturers and software versions. Copyright © 2015. Published by Elsevier Ireland Ltd.

  10. Microbiological quality of selected spices and herbs including the presence of Cronobacter spp.

    Science.gov (United States)

    Garbowska, M; Berthold-Pluta, A; Stasiak-Różańska, L

    2015-08-01

    The cultivation of spices and herbs in parts of the world characterized by warm climate and high humidity provides excellent conditions for the development of microorganisms, including the undesirable ones. The aim of this study was to determine the microbiological quality of spices and herbs available on the Polish market, considering the occurrence of Cronobacter species bacteria. Analyses covered 60 samples of commercial spices and herbs, including 38 samples of dried herbs (basil, bay leaves, thyme, oregano, tarragon, marjoram, dill, parsley, rosemary, lovage) and 16 samples of seasoning blends as well as 6 samples of spices seeds and fruits (pimento, black pepper, coriander). All samples were tested for the total count of aerobic mesophilic bacteria (TAMB) and for the presence of Cronobacter spp. In most of the samples of spices and herbs (60.0%), the TAMB did not exceed 10(4) CFU/g, and the level regarded as unacceptable (>10(6) CFU/g) was not identified in any of the samples. The presence of Cronobacter spp. was demonstrated in 10 (16.7%) samples of the analyzed products, however these were mainly samples of herbs (basil, tarragon, parsley) and one sample of a seasoning blend (Provence herbs). The highest microbiological contamination (TAMB) was found in samples of herbs (oregano, tarragon, basil) and in ready seasoning blends, in 21.1% and 25.0% of which the total count of aerobic mesophiles was in the range of 10(5)-10(6) CFU/g. In all samples of spices seeds and fruits (coriander, black pepper and pimento), the total count of aerobic bacteria reached spices and herbs available on the Polish market. The study demonstrated also that dried spices and herbs may be carriers of Cronobacter species bacteria, though their presence in not often detected in products of this type. Copyright © 2015 Elsevier Ltd. All rights reserved.

  11. Control cards as a statistical quality control resource

    Directory of Open Access Journals (Sweden)

    Aleksandar Živan Drenovac

    2013-02-01

    Full Text Available Normal 0 false false false MicrosoftInternetExplorer4 This paper proves that applying of statistical methods can significantly contribute increasing of products and services quality, as well as increasing of institutions rating. Determining of optimal, apropos anticipatory and limitary values, is based on sample`s statistical analyze. Control cards represent very confident instrument, which is simple for use and efficient for control of process, by which process is maintained in set borders. Thus, control cards can be applied in quality control of procesess of weapons and military equipment production, maintenance of technical systems, as well as for seting of standards and increasing of quality level for many other activities.

  12. A Comparison of Power Quality Controllers

    Directory of Open Access Journals (Sweden)

    Petr Černek

    2012-01-01

    Full Text Available This paper focuses on certain types of FACTS (Flexibile AC Transmission System controllers, which can be used for improving the power quality at the point of connection with the power network. It focuses on types of controllers that are suitable for use in large buildings, rather than in transmission networks. The goal is to compare the features of the controllers in specific tasks, and to clarify which solution is best for a specific purpose. It is in some cases better and cheaper to use a combination of controllers than a single controller. The paper also presents the features of a shunt active harmonic compensator, which is a very modern power quality controller that can be used in many cases, or in combination with other controllers. The comparison was made using a matrix diagram that, resulted from mind mapsand other analysis tools. The paper should help engineers to choose the best solution for improving the power quality in a specific power network at distribution level.

  13. Quality Assurance and Control in Laboratory using Neutron Activation Analysis

    International Nuclear Information System (INIS)

    Chung, Y. S.; Moon, J. H.; Sun, G. M.; Kim, S. H.; Baek, S. Y.; Lim, J. M.; Kim, H. R.

    2007-01-01

    In accordance with the increment of international trade associated with the worldwide globalization, the importance of quality assurance and control for the commodity produced from one's own country has been stressed. ISO (International Organization for Standards) defines quality control as 'the operational techniques and activities that are used to fulfill the requirements for quality'. Since 1996, the HANARO research reactor in the Korea Atomic Energy Research Institute has been operated thereafter initial critical operation on April 1995. Neutron activation analysis system and applied techniques which is one of a nuclear analytical technologies using reactor neutrons has been developed for user's supporting and the establishment of the quality system for a measurement and analysis, testing and inspection was implemented successfully. On the basis of the qualified NAA system, the test and measurement of more than 1500 samples which is requested from 30 organizations including industrial companies, universities and institutes carried out in NAA laboratory annually. Moreover, as the goal of mutual recognition agreement (MRA) which can be removed a technical barrier in international trade, the objectivity and the confidence of analytical quality in NAA laboratory became established through the installation of international accreditation system by implementing analytical quality system in accordance with international standards in 2001. The aim of the report was to summarize the technical management of introduction, methods and the results for a quality control and assurance which should be performed in NAA technique using the HANARO research reactor. The report will help building up effective quality control strategy in the future

  14. Advanced methods of quality control in nuclear fuel fabrication

    International Nuclear Information System (INIS)

    Onoufriev, Vladimir

    2004-01-01

    Under pressure of current economic and electricity market situation utilities implement more demanding fuel utilization schemes including higher burn ups and thermal rates, longer fuel cycles and usage of Mo fuel. Therefore, fuel vendors have recently initiated new R and D programmes aimed at improving fuel quality, design and materials to produce robust and reliable fuel. In the beginning of commercial fuel fabrication, emphasis was given to advancements in Quality Control/Quality Assurance related mainly to product itself. During recent years, emphasis was transferred to improvements in process control and to implementation of overall Total Quality Management (TQM) programmes. In the area of fuel quality control, statistical control methods are now widely implemented replacing 100% inspection. This evolution, some practical examples and IAEA activities are described in the paper. The paper presents major findings of the latest IAEA Technical Meetings (TMs) and training courses in the area with emphasis on information received at the TM and training course held in 1999 and other latest publications to provide an overview of new developments in process/quality control, their implementation and results obtained including new approaches to QC

  15. 77 FR 59986 - Johnson Controls Including Workers Whose Wages Were Reported Under IMECO LLC; North American...

    Science.gov (United States)

    2012-10-01

    ... applicable to workers and former workers of Johnson Controls, North American Refrigeration, Dixon, Illinois... to TA-W-71,663 is hereby issued as follows: All workers of Johnson Controls, including workers whose... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-71,663] Johnson Controls...

  16. 75 FR 77664 - Honeywell International, Inc., Automation and Control Solutions Division, Including On-Site...

    Science.gov (United States)

    2010-12-13

    ..., Inc., Automation and Control Solutions Division, Including On-Site Leased Workers From Manpower... Solutions Division. The Department has determined that these workers were sufficiently under the control of Honeywell International, Inc., Automation and Control Solutions Division to be considered leased workers...

  17. 30 CFR 285.659 - What requirements must I include in my SAP, COP, or GAP regarding air quality?

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false What requirements must I include in my SAP, COP, or GAP regarding air quality? 285.659 Section 285.659 Mineral Resources MINERALS MANAGEMENT SERVICE... must I include in my SAP, COP, or GAP regarding air quality? (a) You must comply with the Clean Air Act...

  18. Data Organization for Quality Control Test

    International Nuclear Information System (INIS)

    Yahaya Talib; Glam Hadzir Patai Mohamad; Wan Hamirul Bahrin Wan Kamal

    2011-01-01

    Test data and results for quality control of Mo-99/ Tc-99m generator shall be organized properly. A computer program was developed using Visual Basic 6.0 to process test data, store data and results to specific folder, generate test reports and certificates. Its performance has been evaluated and tested. (author)

  19. Water quality control program in experimental circuits

    International Nuclear Information System (INIS)

    Cegalla, Miriam A.

    1996-01-01

    The Water Quality Control Program of the Experimental Circuits visualizes studying the water chemistry of the cooling in the primary and secondary circuits, monitoring the corrosion of the systems and studying the mechanism of the corrosion products transport in the systems. (author)

  20. Studies of quality control procedures for radiopharmaceuticals

    International Nuclear Information System (INIS)

    Zivanovic, M.; Trott, N.G.

    1983-01-01

    In this paper, a short description is given of a radiopharmaceutical preparation suite set up at the Royal Marsden Hospital and an account is presented of methods used for quality control of radiopharmaceuticals and of the results obtained over a period of about two and a half years

  1. Materials, methods and quality control, ch. 3

    International Nuclear Information System (INIS)

    Vader, H.L.

    1978-01-01

    A description of the chemical reagents, the 125 I-labelled angiotensin I, the antiserum and the standards is given. A modified measuring method with the New England Nuclear kit for angiotensin I radioimmunoassay is presented as well as the quality control data

  2. Guidelines for radriopharmaceutical quality control in hospitals

    International Nuclear Information System (INIS)

    Welsh, W.J.

    1982-01-01

    This document has been prepared to assist hospital administrators in ensuring that adequate quality control is performed on radiopharmaceuticals administered to their patients. Three sets of guidelines are presented, the degree of sophistication being dependent on the amount of hospital involvement in the radiopharmaceutical preparation

  3. Outsourcing University Degrees: Implications for Quality Control

    Science.gov (United States)

    Edwards, Julie; Crosling, Glenda; Edwards, Ron

    2010-01-01

    Education institutions worldwide have and continue to seek opportunities to spread their offerings abroad. While the provision of courses to students located overseas through partner institutions has many advantages, it raises questions about quality control that are not as applicable to other forms of international education. This paper uses a…

  4. COLLABORATIVE TRIAL AND QUALITY CONTROL IN CHEMICAL ANALYSIS

    Directory of Open Access Journals (Sweden)

    Narsito Narsito

    2010-06-01

    Full Text Available Abstract                                                             This paper deals with some practical problems related to the quality of analytical chemical data usually met in practice. Special attention is given to the topic of quality control in analytical chemistry, since analytical data is one of the primary information from which some important scientifically based decision are to be made. The present paper starts with brief description on some fundamental aspects associated with quality of analytical data, such as sources of variation of analytical data, criteria for quality of analytical method, quality assurance in chemical analysis. The assessment of quality parameter for analytical method like the use of standard materials as well as standard methods is given. Concerning with the quality control of analytical data, the use of several techniques, such as control samples and control charts, in monitoring analytical data in quality control program are described qualitatively.  In the final part of this paper, some important remarks for the preparation of collaborative trials, including the evaluation of accuracy and reproducibility of analytical method are also given Keywords: collaborative trials, quality control, analytical data Abstract                                                             This paper deals with some practical problems related to the quality of analytical chemical data usually met in practice. Special attention is given to the topic of quality control in analytical chemistry, since analytical data is one of the primary information from which some important scientifically based decision are to be made. The present paper starts with brief description on some fundamental aspects associated with quality of analytical data, such as sources of variation of analytical data, criteria for quality of

  5. The role and relevance of quality assurance to quality control

    International Nuclear Information System (INIS)

    Churchill, G.F.

    1989-01-01

    The paper describes the development of Quality Assurance as a total management technique, incorporating manufacturing and construction Quality Control, to give confidence of satisfactory in-service performance. The application of QA to the Heysham 2 and Torness AGR projects design and construction is defined with particular reference to the development of a QA requirements specification, delegation of QA responsibility through the hierarchy of purchasers and suppliers of plant and material, the role of the QA organization and QA auditing. The paper discusses the effectiveness and benefits of QA and the problems identified in its application and implementation. The problems, their solutions and longer term improvements to reduce the costs of QA as well as enhancing confidence in the satisfactory performance of future nuclear projects, are described. (author)

  6. SDRE control strategy applied to a nonlinear robotic including drive motor

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Jeferson J. de, E-mail: jefersonjl82@gmail.com, E-mail: tusset@utfpr.edu.br, E-mail: fcjanzen@utfpr.edu.br, E-mail: piccirillo@utfpr.edu.br, E-mail: claudinor@utfpr.edu.br; Tusset, Angelo M., E-mail: jefersonjl82@gmail.com, E-mail: tusset@utfpr.edu.br, E-mail: fcjanzen@utfpr.edu.br, E-mail: piccirillo@utfpr.edu.br, E-mail: claudinor@utfpr.edu.br; Janzen, Frederic C., E-mail: jefersonjl82@gmail.com, E-mail: tusset@utfpr.edu.br, E-mail: fcjanzen@utfpr.edu.br, E-mail: piccirillo@utfpr.edu.br, E-mail: claudinor@utfpr.edu.br; Piccirillo, Vinicius, E-mail: jefersonjl82@gmail.com, E-mail: tusset@utfpr.edu.br, E-mail: fcjanzen@utfpr.edu.br, E-mail: piccirillo@utfpr.edu.br, E-mail: claudinor@utfpr.edu.br; Nascimento, Claudinor B., E-mail: jefersonjl82@gmail.com, E-mail: tusset@utfpr.edu.br, E-mail: fcjanzen@utfpr.edu.br, E-mail: piccirillo@utfpr.edu.br, E-mail: claudinor@utfpr.edu.br [UTFPR-PONTA GROSSA, PR (Brazil); Balthazar, José M., E-mail: jmbaltha@rc.unesp.br [UNESP-BAURU, SP (Brazil); Brasil, Reyolando M. L. R. da Fonseca, E-mail: reyolando.brasil@ufabc.edu.br [UFABC-SANTO ANDRE, SP (Brazil)

    2014-12-10

    A robotic control design considering all the inherent nonlinearities of the robot-engine configuration is developed. The interactions between the robot and joint motor drive mechanism are considered. The proposed control combines two strategies, one feedforward control in order to maintain the system in the desired coordinate, and feedback control system to take the system into a desired coordinate. The feedback control is obtained using State-Dependent Riccati Equation (SDRE). For link positioning two cases are considered. Case I: For control positioning, it is only used motor voltage; Case II: For control positioning, it is used both motor voltage and torque between the links. Simulation results, including parametric uncertainties in control shows the feasibility of the proposed control for the considered system.

  7. Cascade Controller Including Back-stepping for Hydraulic-Mechanical Systems

    DEFF Research Database (Denmark)

    Choux, Martin; Hovland, Geir; Blanke, Mogens

    2012-01-01

    Development of a cascade controller structure including adaptive backstepping for a nonlinear hydraulic-mechanical system is considered in this paper where a dynamic friction (LuGre) model is included to obtain the necessary accuracy. The paper compares the performance of two variants of an adapt......Development of a cascade controller structure including adaptive backstepping for a nonlinear hydraulic-mechanical system is considered in this paper where a dynamic friction (LuGre) model is included to obtain the necessary accuracy. The paper compares the performance of two variants...... of an adaptive backstepping tracking controller with earlier results. The new control architecture is analysed and enhanced tracking performance is demonstrated when including the extended friction model. The complexity of the backstepping procedure is significantly reduced due to the cascade structure. Hence...

  8. Quality control of PET/CT

    International Nuclear Information System (INIS)

    Angelova, J.; Zajcharov, M.

    2013-01-01

    Full text: Introduction: The aim of this work is to undertake a review of the methods for checking and adjusting the computer and positron emission tomography in the Hospital 'Alexandrovska' by the attached to the equipment phantoms according to the manufacturer prescription in order to fulfill its requirements for the entry of the main parameters image within certain limits. Materials and Methods: At the start of work a check of the lasers setting for patient positioning and 'heat' of the X-ray tube scanner to better image quality were made. Daily verification procedures on the image quality of CT through the water phantom and weekly - 'air' calibration were carried out. In positron part, daily control involves setting the resolution and sensitivity of the scanner through built Ga68 phantom. When commissioning, after repair and at least once a year, it is necessary to verify the accuracy of registration of the pulses from the crystal with a water phantom of known volume and the coincidence between CT and PET image. Results: The process of quality control is interactive. The results are displayed in tables and graphically, with the goal the individual values to fall within the determined by manufacturers range and to meet the standards for image quality. If necessary, the procedure repeats several times until it is fulfilled. Conclusion: Ensuring the quality of the image in positron emission tomography combined with computed tomography, is inextricably linked to accurate and precise diagnosis of tumor processes in the human body

  9. Quality assurance and quality control of nuclear engineering during construction phase

    International Nuclear Information System (INIS)

    Zhang Zhihua; Deng Yue; Liu Yaoguang; Xu Xianqi; Zhou Shan; Qian Dazhi; Zhang Yang

    2007-01-01

    The quality assurance (QA) and quality control (QC) is a very important work in the nuclear engineering. This paper starts with how to establish quality assurance system of nuclear engineering construction phase, then introduces several experiments and techniques such as the implementation of quality assurance program, the quality assurance and quality control of contractors, the quality surveillance and control of supervisory companies, quality assurance audit and surveillance of builders. (authors)

  10. Internal quality control: planning and implementation strategies.

    Science.gov (United States)

    Westgard, James O

    2003-11-01

    The first essential in setting up internal quality control (IQC) of a test procedure in the clinical laboratory is to select the proper IQC procedure to implement, i.e. choosing the statistical criteria or control rules, and the number of control measurements, according to the quality required for the test and the observed performance of the method. Then the right IQC procedure must be properly implemented. This review focuses on strategies for planning and implementing IQC procedures in order to improve the quality of the IQC. A quantitative planning process is described that can be implemented with graphical tools such as power function or critical-error graphs and charts of operating specifications. Finally, a total QC strategy is formulated to minimize cost and maximize quality. A general strategy for IQC implementation is recommended that employs a three-stage design in which the first stage provides high error detection, the second stage low false rejection and the third stage prescribes the length of the analytical run, making use of an algorithm involving the average of normal patients' data.

  11. Fuzzy logic for plant-wide control of biological wastewater treatment process including greenhouse gas emissions.

    Science.gov (United States)

    Santín, I; Barbu, M; Pedret, C; Vilanova, R

    2018-06-01

    The application of control strategies is increasingly used in wastewater treatment plants with the aim of improving effluent quality and reducing operating costs. Due to concerns about the progressive growth of greenhouse gas emissions (GHG), these are also currently being evaluated in wastewater treatment plants. The present article proposes a fuzzy controller for plant-wide control of the biological wastewater treatment process. Its design is based on 14 inputs and 6 outputs in order to reduce GHG emissions, nutrient concentration in the effluent and operational costs. The article explains and shows the effect of each one of the inputs and outputs of the fuzzy controller, as well as the relationship between them. Benchmark Simulation Model no 2 Gas is used for testing the proposed control strategy. The results of simulation results show that the fuzzy controller is able to reduce GHG emissions while improving, at the same time, the common criteria of effluent quality and operational costs. Copyright © 2018 ISA. Published by Elsevier Ltd. All rights reserved.

  12. Quality and Control of Water Vapor Winds

    Science.gov (United States)

    Jedlovec, Gary J.; Atkinson, Robert J.

    1996-01-01

    Water vapor imagery from the geostationary satellites such as GOES, Meteosat, and GMS provides synoptic views of dynamical events on a continual basis. Because the imagery represents a non-linear combination of mid- and upper-tropospheric thermodynamic parameters (three-dimensional variations in temperature and humidity), video loops of these image products provide enlightening views of regional flow fields, the movement of tropical and extratropical storm systems, the transfer of moisture between hemispheres and from the tropics to the mid- latitudes, and the dominance of high pressure systems over particular regions of the Earth. Despite the obvious larger scale features, the water vapor imagery contains significant image variability down to the single 8 km GOES pixel. These features can be quantitatively identified and tracked from one time to the next using various image processing techniques. Merrill et al. (1991), Hayden and Schmidt (1992), and Laurent (1993) have documented the operational procedures and capabilities of NOAA and ESOC to produce cloud and water vapor winds. These techniques employ standard correlation and template matching approaches to wind tracking and use qualitative and quantitative procedures to eliminate bad wind vectors from the wind data set. Techniques have also been developed to improve the quality of the operational winds though robust editing procedures (Hayden and Veldon 1991). These quality and control approaches have limitations, are often subjective, and constrain wind variability to be consistent with model derived wind fields. This paper describes research focused on the refinement of objective quality and control parameters for water vapor wind vector data sets. New quality and control measures are developed and employed to provide a more robust wind data set for climate analysis, data assimilation studies, as well as operational weather forecasting. The parameters are applicable to cloud-tracked winds as well with minor

  13. Quality control of scintillation cameras (planar and SPECT)

    International Nuclear Information System (INIS)

    Shaekhoon, E.S.

    2008-01-01

    Regular quality control is one of the corner stones of nuclear medicine and a prerequisite for adequate diagnostic imaging. Many papers have been published on quality control of planar and SPECT imaging system up to now, however only minor attenuation has been given to the assessment of the performance of imaging systems. In this research we are going to discuss a comprehensive set of test procedures including regular quality control. Our purpose is to go through analysis of the methods and results then to test our hypothesis which state that there is strong relationship between regular and proper evaluation of quality control and the continuity of better medical services in nuclear medicine department. The selection of the tests is discussed and the tests are described, then results are presented. In addition action thresholds are proposed. The quality control tests can be applied to systems with either a moving detector or a moving image table, and to both detector with a large field of view and detectors with a small field of view. The tests presented on this research do not required special phantoms or sources other than those used for quality control of stationary gamma camera and SPECT. They can be applied for acceptance testing and for performance testing in a regular quality assurance program. The data has been evaluated based on me diso software in comparing with IAEA expert software and system specification within the reference values. Our final results confirm our hypothesis, there are some comments about the characteristics and performance of this system that being observed and solved, then a departmental protocol for routine quality control (Q.C) has being established.(Author)

  14. Quality control of the documentation process in electronic economic activities

    Directory of Open Access Journals (Sweden)

    Krutova A.S.

    2017-06-01

    Full Text Available It is proved that the main tool that will provide adequate information resources e economic activities of social and economic relations are documenting quality control processes as the basis of global information space. Directions problems as formation evaluation information resources in the process of documentation, namely development tools assess the efficiency of the system components – qualitative assessment; development of mathematical modeling tools – quantitative evaluation. A qualitative assessment of electronic documentation of economic activity through exercise performance, efficiency of communication; document management efficiency; effectiveness of flow control operations; relationship management effectiveness. The concept of quality control process documents electronically economic activity to components which include: the level of workflow; forms adequacy of information; consumer quality documents; quality attributes; type of income data; condition monitoring systems; organizational level process documentation; attributes of quality, performance quality consumer; type of management system; type of income data; condition monitoring systems. Grounded components of the control system electronic document subjects of economic activity. Detected components IT-audit management system economic activity: compliance audit; audit of internal control; detailed multilevel analysis; corporate risk assessment methodology. The stages and methods of processing electronic transactions economic activity during condition monitoring of electronic economic activity.

  15. 42 CFR 84.40 - Quality control plans; filing requirements.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Quality control plans; filing requirements. 84.40... Control § 84.40 Quality control plans; filing requirements. As a part of each application for approval or... proposed quality control plan which shall be designed to assure the quality of respiratory protection...

  16. 21 CFR 211.22 - Responsibilities of quality control unit.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Responsibilities of quality control unit. 211.22... Personnel § 211.22 Responsibilities of quality control unit. (a) There shall be a quality control unit that... have been fully investigated. The quality control unit shall be responsible for approving or rejecting...

  17. 30 CFR 28.30 - Quality control plans; filing requirements.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Quality control plans; filing requirements. 28... PROTECTION FOR TRAILING CABLES IN COAL MINES Quality Control § 28.30 Quality control plans; filing... part, each applicant shall file with MSHA a proposed quality control plan which shall be designed to...

  18. Determination and evaluation of air quality control. Manual of ambient air quality control in Germany

    Energy Technology Data Exchange (ETDEWEB)

    Lahmann, E.

    1997-07-01

    Measurement of air pollution emissions and ambient air quality are essential instruments for air quality control. By undertaking such measurements, pollutants are registered both at their place of origin and at the place where they may have an effect on people or the environment. Both types of measurement complement each other and are essential for the implementation of air quality legislation, particularly, in compliance with emission and ambient air quality limit values. Presented here are similar accounts of measurement principles and also contains as an Appendix a list of suitability-tested measuring devices which is based on information provided by the manufacturers. In addition, the guide of ambient air quality control contains further information on discontinuous measurement methods, on measurement planning and on the assessment of ambient air quality data. (orig./SR)

  19. Prize something, including quality. The price of supply interruption. On the search for φ. Technical report

    International Nuclear Information System (INIS)

    Baarsma, B.E.; Berkhout, P.H.G.; Hop, J.P.

    2004-04-01

    The Dutch Office of Energy Regulation (DTe) plans to adjust the present regulations with regard to regional electricity network companies. In 2002 an integrated model for pricing and quality regulations is drafted, which is expected to be implemented in 2005. This report serves as input for such a model. Quality is defined in terms of electricity supply disruptions. The aim of the study on the title subject is to determine prices for different types of power supply disruptions. The study is based on a survey among 12,400 households and nearly 2,500 small and medium-sized businesses in the Netherlands [nl

  20. Control of Bank Consolidated Financial Statements Quality

    Directory of Open Access Journals (Sweden)

    Margarita S. Ambarchyan

    2013-01-01

    Full Text Available The author presents the multiple linear regression model of bank consolidated financial statements quality. The article considers six characteristics that can be used to estimate the level of bank consolidated financial statements quality. The multiple linear regression model was developed, using the results of point-based system of consolidated financial statements of thirty European bank and financial groups on the basis of the developed characteristics. The author offers to use the characteristic significance factor in the process of consolidated financial statements appraisal by points. The constructed regression model is checked on accuracy and statistical significance. The model can be used by internal auditors and financial analytics as an instrument for bank and non-bank consolidated financial statements quality control

  1. Quality control of commercial bovine lactoferrin.

    Science.gov (United States)

    Wakabayashi, Hiroyuki; Yamauchi, Koji; Abe, Fumiaki

    2018-06-01

    Herein we review commercial bovine lactoferrin quality issues by describing an example of industrial production, the current status of global quality standardization, and quality-activity concerns for further discussion. Morinaga Milk Industry has been industrially producing bovine lactoferrin in Milei GmbH, Germany, since 1989. We delineate its production and quality as an example of safe and high-quality manufacturing. Currently, global standardization in the quality of bovine lactoferrin is progressing through Novel Food and GRAS in the EU and USA, respectively. Novel Food was applied or notified to seven lactoferrin manufacturers and GRAS was notified to three manufacturers, two of which are for infant use and one is for adult use, by the end of 2017. The specifications of these regulations are relatively high, including more than 95% lactoferrin purity in protein, which means that such companies can supply relatively high-grade lactoferrin. There appear to be several concerns regarding lactoferrin quality affecting activities, including contamination of lipopolysaccharide (LPS) and angiogenin, purity, and degradation of lactoferrin sample. Although LPS is immunologically toxic when invading the body, it is distributed normally in foods and the gut. However, an industrial lactoferrin sample may contain LPS at a maximum LPS/lactoferrin molecule ratio = 1/1724, which means 99.9% of the lactoferrin molecule is LPS-free. It is difficult to speculate that LPS contained in a lactoferrin sample affects its activities. Finally in order to achieve good and reproducible results, we make proposals to researchers a use of high-grade lactoferrin, careful storage, and indication the manufacturers' names and specifications in the paper.

  2. Quality Risk Management: Putting GMP Controls First.

    Science.gov (United States)

    O'Donnell, Kevin; Greene, Anne; Zwitkovits, Michael; Calnan, Nuala

    2012-01-01

    This paper presents a practical way in which current approaches to quality risk management (QRM) may be improved, such that they better support qualification, validation programs, and change control proposals at manufacturing sites. The paper is focused on the treatment of good manufacturing practice (GMP) controls during QRM exercises. It specifically addresses why it is important to evaluate and classify such controls in terms of how they affect the severity, probability of occurrence, and detection ratings that may be assigned to potential failure modes or negative events. It also presents a QRM process that is designed to directly link the outputs of risk assessments and risk control activities with qualification and validation protocols in the GMP environment. This paper concerns the need for improvement in the use of risk-based principles and tools when working to ensure that the manufacturing processes used to produce medicines, and their related equipment, are appropriate. Manufacturing processes need to be validated (or proven) to demonstrate that they can produce a medicine of the required quality. The items of equipment used in such processes need to be qualified, in order to prove that they are fit for their intended use. Quality risk management (QRM) tools can be used to support such qualification and validation activities, but their use should be science-based and subject to as little subjectivity and uncertainty as possible. When changes are proposed to manufacturing processes, equipment, or related activities, they also need careful evaluation to ensure that any risks present are managed effectively. This paper presents a practical approach to how QRM may be improved so that it better supports qualification, validation programs, and change control proposals in a more scientific way. This improved approach is based on the treatment of what are called good manufacturing process (GMP) controls during those QRM exercises. A GMP control can be considered

  3. Quality Management and Control of Low Pressure Cast Aluminum Alloy

    Science.gov (United States)

    Zhang, Dianxi; Zhang, Yanbo; Yang, Xiufan; Chen, Zhaosong; Jiang, Zelan

    2018-01-01

    This paper briefly reviews the history of low pressure casting and summarizes the major production processes of low pressure casting. It briefly introduces the quality management and control of low pressure cast aluminum alloy. The main processes include are: preparation of raw materials, Melting, refining, physical and chemical analysis, K-mode inspection, sand core, mold, heat treatment and so on.

  4. Microbiological Quality Control of Probiotic Products

    OpenAIRE

    Astashkina, A.P.; Khudyakova, L.I.; Kolbysheva, Y.V.

    2014-01-01

    Microbiological quality control of probiotic products such as Imunele, Dannon, Pomogayka showed that they contain living cultures of the Lactobacillus Bifidobacterium genus in the amount of 107 CFU/ml, which corresponds to the number indicated on the label of products. It is identified that the survival rate of test-strains cultured with pasteurized products does not exceed 10%. The cell concentration of target-microorganisms was reduced by 20-45% after the interaction with living probiotic b...

  5. Quality control and the multicrystal counter

    International Nuclear Information System (INIS)

    Hart, G.C.; Davis, K.M.

    1983-01-01

    The reliability of multicrystal counters for use in counting large numbers of radioimmunoassay samples is studied. In particular, the dependencies of the outputs from the array of detectors, and hence their degree of matching, on the count rate and volume of the samples being counted are investigated. Quality control procedures are described to assist in the assurance of consistent performance of the counter in the clinical situation. (U.K.)

  6. The software quality control for gamma spectrometry

    International Nuclear Information System (INIS)

    Monte, L.

    1986-01-01

    One of major problems with wich the quality control program of an environmental measurements laboratory is confronted is the evaluation of the performances of software packages for the analysis of gamma-ray spectra. A program of tests for evaluating the performances of the software package (SPECTRAN-F, Canberra Inc.) used by our laboratory is being carried out. In this first paper the results of a preliminary study concerning the evaluation of the performance of the doublet analysis routine are presented

  7. Quality control of estrogen receptor assays.

    Science.gov (United States)

    Godolphin, W; Jacobson, B

    1980-01-01

    Four types of material have been used for the quality control of routine assays of estrogen receptors in human breast tumors. Pieces of hormone-dependent Nb rat mammary tumors gave a precision about 40%. Rat uteri and rat tumors pulverized at liquid nitrogen temperature and stored as powder yielded precision about 30%. Powdered and lyophilised human tumors appear the best with precision as good as 17%.

  8. 76 FR 175 - Faurecia Emissions Control Technologies Including On-Site Leased Workers From Adecco Employment...

    Science.gov (United States)

    2011-01-03

    ... Technologies Including On-Site Leased Workers From Adecco Employment Servcies and Emcon Technologies, Troy, MI..., applicable to workers of Faurecia Emissions Control Technologies, Troy, Michigan, including on-site leased workers from Adecco Employment Services, Troy, Michigan. The Department's notice of determination was...

  9. Quality-control activities of the Hanford Environmental Surveillance Program

    International Nuclear Information System (INIS)

    Price, K.R.; Jaquish, R.E.

    1982-01-01

    A comprehensive approach to quality control (QC) has been developed by the Pacific Northwest Laboratory for the Hanford Environmental Surveillance Program. The framework of quality control for the surveillance program has been documented in a QC implementation guide wherein QC requirements are specified and specific responsibilities and authorities are described. Subjects in the guide include the collection, analysis, and reporting of samples as well as equipment calibration and maintenance, training, audits, and record keeping. A QC file and library have been established to store pertinent documentation, records, and references for ready access

  10. Fuzzy Control of Yaw and Roll Angles of a Simulated Helicopter Model Includes Articulated Manipulators

    Directory of Open Access Journals (Sweden)

    Hossein Sadegh Lafmejani

    2015-09-01

    Full Text Available Fuzzy logic controller (FLC is a heuristic method by If-Then Rules which resembles human intelligence and it is a good method for designing Non-linear control systems. In this paper, an arbitrary helicopter model includes articulated manipulators has been simulated with Matlab SimMechanics toolbox. Due to the difficulties of modeling this complex system, a fuzzy controller with simple fuzzy rules has been designed for its yaw and roll angles in order to stabilize the helicopter while it is in the presence of disturbances or its manipulators are moving for a task. Results reveal that a simple FLC can appropriately control this system.

  11. Quality control of mammography departments in Slovakia

    International Nuclear Information System (INIS)

    Horvathova, M.; Nikodemova, D.

    2007-01-01

    Complete test of publication follows. Considering the fact that mammary gland is the most sensitive organ to ionizing radiation, the Commission of the Ministry of Health of SR for QA in radiology organized a pilot two-run country wide audit conducted in 42 mammography departments that have met the beforehand criteria. During the audit the methods for establishing the individual parameters in technical and clinical part of quality assurance in mammography were elaborated and implemented. Technical and clinical parameters of the imaging process that mostly affect the quality of diagnostic information were followed up. These parameters included: the object thickness compensation, optical density deviation, evaluation of the film quality by means of special phantom, etc. Important measurement of ESDs at participating departments enabled to compare the radiation load of mammography patients in Slovakia with reference values in European guidelines. The uniform standard method for QA at mammography departments was elaborated and published as the regulation of the Ministry of Health for performance of preventive mammography examinations in SR. The presented results show the improved quality of mammography examinations due to regular check-ups of technical and clinical parameters and fulfilment of the required values in all parameters. The audit results are the basis for continuous quality assessment of mammography departments as a main prerequisite for conducting preventive examinations and for health insurance purposes.

  12. Optimal fuzzy logic-based PID controller for load-frequency control including superconducting magnetic energy storage units

    International Nuclear Information System (INIS)

    Pothiya, Saravuth; Ngamroo, Issarachai

    2008-01-01

    This paper proposes a new optimal fuzzy logic-based-proportional-integral-derivative (FLPID) controller for load frequency control (LFC) including superconducting magnetic energy storage (SMES) units. Conventionally, the membership functions and control rules of fuzzy logic control are obtained by trial and error method or experiences of designers. To overcome this problem, the multiple tabu search (MTS) algorithm is applied to simultaneously tune PID gains, membership functions and control rules of FLPID controller to minimize frequency deviations of the system against load disturbances. The MTS algorithm introduces additional techniques for improvement of search process such as initialization, adaptive search, multiple searches, crossover and restarting process. Simulation results explicitly show that the performance of the optimum FLPID controller is superior to the conventional PID controller and the non-optimum FLPID controller in terms of the overshoot, settling time and robustness against variations of system parameters

  13. Statistical process control for radiotherapy quality assurance

    International Nuclear Information System (INIS)

    Pawlicki, Todd; Whitaker, Matthew; Boyer, Arthur L.

    2005-01-01

    Every quality assurance process uncovers random and systematic errors. These errors typically consist of many small random errors and a very few number of large errors that dominate the result. Quality assurance practices in radiotherapy do not adequately differentiate between these two sources of error. The ability to separate these types of errors would allow the dominant source(s) of error to be efficiently detected and addressed. In this work, statistical process control is applied to quality assurance in radiotherapy for the purpose of setting action thresholds that differentiate between random and systematic errors. The theoretical development and implementation of process behavior charts are described. We report on a pilot project is which these techniques are applied to daily output and flatness/symmetry quality assurance for a 10 MV photon beam in our department. This clinical case was followed over 52 days. As part of our investigation, we found that action thresholds set using process behavior charts were able to identify systematic changes in our daily quality assurance process. This is in contrast to action thresholds set using the standard deviation, which did not identify the same systematic changes in the process. The process behavior thresholds calculated from a subset of the data detected a 2% change in the process whereas with a standard deviation calculation, no change was detected. Medical physicists must make decisions on quality assurance data as it is acquired. Process behavior charts help decide when to take action and when to acquire more data before making a change in the process

  14. 7 CFR 58.642 - Quality control tests.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Quality control tests. 58.642 Section 58.642... Procedures § 58.642 Quality control tests. All mix ingredients shall be subject to inspection for quality and condition throughout each processing operation. Quality control tests shall be made on flow line samples as...

  15. 7 CFR 58.928 - Quality control tests.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Quality control tests. 58.928 Section 58.928... Procedures § 58.928 Quality control tests. All dairy products and other ingredients shall be subject to inspection for quality and condition throughout each processing operation. Quality control tests shall be...

  16. 7 CFR 58.335 - Quality control tests.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Quality control tests. 58.335 Section 58.335... Procedures § 58.335 Quality control tests. All milk, cream and related products are subject to inspection for quality and condition throughout each processing operation. Quality control tests shall be made on flow...

  17. Quality assurance and quality control of nuclear analytical techniques

    International Nuclear Information System (INIS)

    Cincu, Emanuelathor

    2001-01-01

    Test and analytical laboratories in East and Central European countries need to prove the reliability and credibility of their economic, environmental, medical and legal decisions and their capacity of issuing reliable, verifiable reports. These demands imposed by the European Union aimed at avoiding a possible barrier to trade for the developing countries. In June 1999, in order to help Member States to develop according to EU objectives and the overall situation of the European market, IAEA launched a new co-operation programme designed to help the nuclear analytical laboratories in nuclear institutions and universities of Member States by training in the use of some Nuclear Analytical Techniques (NAT) that include: alpha, beta and gamma-ray spectrometry, radiochemical and neutron activation analysis, total reflection X-ray fluorescence. The Regional IAEA Project, named 'Quality Assurance/Quality Control of Nuclear Analytical Techniques' (NAT) aims at implementing the QA principles via a system of defined consecutive steps leading to a level on which the QA system is self-sustainable for formal accreditation or certification and satisfies the EU technical performance criteria; the requirements are in accordance with the new ISO/IEC 17025 Standard/Dec.1999 'General requirements for the competence of testing and calibration laboratories' - First edition. The Horia Hulubei National Institute for Nuclear Physics and Engineering, IFIN-HH, was admitted for participation in the IAEA Project in June 1999 account taken of its experience in the QA and metrology fields and its performance in the fields of beta and gamma-ray spectrometry, and radiochemical and neutron activation analysis, employed in both basic research and applications for external clients. Two working groups of specialists with the QA and Standardization and Metrology Departments and six analytical groups with the departments of Nuclear Applied Physics, Life Physics and Ionising Radiation Metrology are

  18. Development of phantom periapical for control quality

    International Nuclear Information System (INIS)

    Mendes, J.M.S.; Sales Junior, E.S.; Ferreira, F.C.L.; Paschoal, C.M.M.

    2015-01-01

    This study aimed to develop a dental phantom with cysts for evaluation of periapical radiographs that was tested in private dental offices in the city of Maraba, northern Brazil. Through some tests with the object simulator (phantom) were obtained 12 periapical radiographs (one in each of the offices visited) that waking up to the standards of Ordinance No. 453 were visually evaluated by observing the physical parameters of exposure (kVp and mA), time revelation of the radiographic film, later the other radiographs were visually compared with C6 ray set as the default. Among the results, it was found that only two of the twelve rays cysts could not be viewed and, therefore, these two images were deemed unsuitable for accurate diagnosis in the 10 images the cysts could be displayed, however according the images have different qualities comparisons. In addition, it can be concluded that the performance of the phantom was highly satisfactory showing to be efficient for use in quality control testing of dental X-rays, the quality control of radiographs and continuing education of dental professionals for a price much more accessible. (authors)

  19. Quality Management of CERN Vacuum Controls

    CERN Document Server

    Antoniotti, F; Fortescue-Beck, E; Gama, J; Gomes, P; Le Roux, P; Pereira, H; Pigny, G

    2014-01-01

    The vacuum controls Section (TE-VSC-ICM) is in charge of the monitoring, maintenance and consolidation of the control systems of all accelerators and detectors in CERN; this represents 6 000 instruments distributed along 128 km of vacuum chambers, often of heterogeneous architectures and of diverse technical generations. In order to improve the efficiency of the services provided by ICM, to vacuum experts and to accelerator operators, a Quality Management Plan is being put into place. The first step was the standardization of the naming convention across different accelerators. The traceability of problems, requests, repairs, and other actions, has also been put into place (VTL). This was combined with the effort to identify each individual device by a coded label, and register it in a central database (MTF). Occurring in parallel, was the gathering of old documents and the centralization of information concerning architectures, procedures, equipment and settings (EDMS). To describe the topology of control c...

  20. Input-output linearizing tracking control of induction machine with the included magnetic saturation

    DEFF Research Database (Denmark)

    Dolinar, Drago; Ljusev, Petar; Stumberger, Gorazd

    2003-01-01

    The tracking control design of an induction motor, based on input-output linearisation with magnetic saturation included is addressed. The magnetic saturation is represented by a nonlinear magnetising curve for the iron core and is used in the control, the observer of the state variables......, and in the load torque estimator. An input-output linearising control is used to achieve better tracking performances. It is based on the mixed 'stator current - rotor flux linkage' induction motor model with magnetic saturation considered in the stationary reference frame. Experimental results show...... that the proposed input-output linearising tracking control with saturation included behaves considerably better than the one without saturation, and that it introduces smaller position and speed errors, and better motor stiffness on account of the increased computational complexity....

  1. Method and apparatus for controlling a powertrain system including a multi-mode transmission

    Science.gov (United States)

    Hessell, Steven M.; Morris, Robert L.; McGrogan, Sean W.; Heap, Anthony H.; Mendoza, Gil J.

    2015-09-08

    A powertrain including an engine and torque machines is configured to transfer torque through a multi-mode transmission to an output member. A method for controlling the powertrain includes employing a closed-loop speed control system to control torque commands for the torque machines in response to a desired input speed. Upon approaching a power limit of a power storage device transferring power to the torque machines, power limited torque commands are determined for the torque machines in response to the power limit and the closed-loop speed control system is employed to determine an engine torque command in response to the desired input speed and the power limited torque commands for the torque machines.

  2. Microbiological quality control practices at Australian Radioisotopes

    International Nuclear Information System (INIS)

    Saunders, M.

    1987-01-01

    As a domestic manufacturer of therapeutic substances, Australian Radioisotopes (ARI) must adhere to guidelines set out by the Commonwealth Department of Health in the Code of Good Manufacturing Practices for Therapeutic Goods 1983 (GMP). The GMP gives guidelines for staff training, building requirements, sanitation, documentation and quality control practices. These guidelines form the basis for regular audits performed by officers of the National Biological Standards Laboratories. At Lucas Heights, ARI has combined the principles of the GMP with the overriding precautions introduced for environmental and staff safety and protection. Its policy is to maintain a high level of quality assurance for product identity, purity and sterility and apyrogenicity during all stages of product manufacture

  3. Basic quality control in diagnostic radiology

    International Nuclear Information System (INIS)

    Wikstrom, Erik

    2016-01-01

    Along the route toward regular performance of Quality Control in the Diagnostic Imaging sector there are a number of balances to negotiate: Patient/Staff safety considerations vs Regulatory compliance vs Performance of modern equipment vs Clinic's Productivity. At first glance these ambitions may seem in conflict. The tests performed to meet regulatory requirements may or may not bear any semblance to real clinical measurement scenarios. And the process of collecting the data from the quality assurance tests may induce a system down- time that adversely affects the clinic's overall productivity. Furthermore, the time it takes to complete the analysis of the test data and provide the report required to take the facility back into operation is time wasted for patients waiting for a diagnostic imaging exam

  4. CERN’s Computing rules updated to include policy for control systems

    CERN Multimedia

    IT Department

    2008-01-01

    The use of CERN’s computing facilities is governed by rules defined in Operational Circular No. 5 and its subsidiary rules of use. These rules are available from the web site http://cern.ch/ComputingRules. Please note that the subsidiary rules for Internet/Network use have been updated to include a requirement that control systems comply with the CNIC(Computing and Network Infrastructure for Control) Security Policy. The security policy for control systems, which was approved earlier this year, can be accessed at https://edms.cern.ch/document/584092 IT Department

  5. Hierarchical control of a photovoltaic/battery based DC microgrid including electric vehicle wireless charging station

    DEFF Research Database (Denmark)

    Xiao, Zhao xia; Fan, Haodong; Guerrero, Josep M.

    2017-01-01

    In this paper, the hierarchical control strategy of a photovoltaic/battery based dc microgrid is presented for electric vehicle (EV) wireless charging. Considering irradiance variations, battery charging/discharging requirements, wireless power transmission characteristics, and onboard battery...... coils, receiving coils and compensation capacitors, the wireless power transmission system is designed to be resonant when it is operating at the rated power, with the aim to achieve the optimum transmission system efficiency. Simulation and experimental results of the hierarchical control...... charging power change and other factors, the possible operation states are obtained. A hierarchical control strategy is established, which includes central and local controllers. The central controller is responsible for the selection and transfer of operation states and the management of the local...

  6. Quality Assurance and Control in Laboratory using Neutron Activation Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Y. S.; Moon, J. H.; Sun, G. M.; Kim, S. H.; Baek, S. Y.; Lim, J. M.; Kim, H. R

    2007-01-15

    In accordance with the increment of international trade associated with the worldwide globalization, the importance of quality assurance and control for the commodity produced from one's own country has been stressed. ISO (International Organization for Standards) defines quality control as 'the operational techniques and activities that are used to fulfill the requirements for quality'. Since 1996, the HANARO research reactor in the Korea Atomic Energy Research Institute has been operated thereafter initial critical operation on April 1995. Neutron activation analysis system and applied techniques which is one of a nuclear analytical technologies using reactor neutrons has been developed for user's supporting and the establishment of the quality system for a measurement and analysis, testing and inspection was implemented successfully. On the basis of the qualified NAA system, the test and measurement of more than 1500 samples which is requested from 30 organizations including industrial companies, universities and institutes carried out in NAA laboratory annually. Moreover, as the goal of mutual recognition agreement (MRA) which can be removed a technical barrier in international trade, the objectivity and the confidence of analytical quality in NAA laboratory became established through the installation of international accreditation system by implementing analytical quality system in accordance with international standards in 2001. The aim of the report was to summarize the technical management of introduction, methods and the results for a quality control and assurance which should be performed in NAA technique using the HANARO research reactor. The report will help building up effective quality control strategy in the future.

  7. Quality Control in Diagnostic Radiology in the Netherlands (invited paper)

    International Nuclear Information System (INIS)

    Zoetelief, J.

    1998-01-01

    Application of the general principles of radiation protection to medical diagnostic radiology implies that each procedure using X rays or radionuclides is to be justified and optimised. Optimisation in diagnostic radiology implies that the radiation burden to the patient should be as low as possible, but compatible with the image quality necessary to obtain an adequate diagnosis or to guide treatment. Quality control of equipment is a prerequisite for achieving optimisation in diagnostic radiology. This was especially recognised for mammography as employed for breast cancer screening. Existing legislation in the Netherlands includes only a few criteria for equipment used in diagnostic radiology. In addition, the criteria are not all operational and measurement methods are lacking. Therefore, upon the initiative of the Dutch Ministry of Health, Welfare and Sports, the relevant professional societies, in collaboration with the former TNO Centre for Radiological Protection and Dosimetry, formulated eleven guidelines for quality control of equipment used in diagnostic radiology, including test procedures, test frequencies and limiting values. The implementation of quality control of equipment was included in the 1984 European Directive (84/466/Euratom) laying down basic measures for the radiation protection of persons undergoing medical examination or treatment. In the most recent European Directive on medical exposure (97/43/Euratom) the importance of quality control is stressed. In addition, the latter EC directive proposes the use of diagnostic reference levels for limiting the risks for patients undergoing diagnostic radiology. In the Netherlands preliminary reference levels for various procedures employed in diagnostic radiology are suggested. Finally, methods applied in the Netherlands for assessment of image quality are discussed. (author)

  8. 34 CFR 611.2 - What management plan must be included in a Teacher Quality Enhancement Grants Program application?

    Science.gov (United States)

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false What management plan must be included in a Teacher... TEACHER QUALITY ENHANCEMENT GRANTS PROGRAM General Provisions § 611.2 What management plan must be... appropriate, a management plan that includes a proposed multiyear workplan. (b) At a minimum, this workplan...

  9. ANALYSIS OF QUALITY COSTS FOR STATISTICA QUALITY CONTROL PLANNING

    Directory of Open Access Journals (Sweden)

    N. Chiadamrong

    2017-12-01

    Full Text Available Quality has become one or the most important force leading to organizational success and company growth in national and international markets. The return-on-investment from strong and effective quality programs is providing excellent profitability results in firms with effective quality strategies. Due to the wide variation in quality results, the search for the genuine keys to success in quality has become a matter of deep concern to management of companies. This paper suggests a way to quantifying quality costs. As a result, the appropriate quality strategies can be adjusted and set to match with each company situation based on the categorization of the quality costs suggested. This outcome can, then, be used as a guideline for manufactures in setting their suitable quality program, which establishes the proper balance between the costs and customer services.

  10. Association of adherence to epilepsy quality standards with seizure control.

    Science.gov (United States)

    Moura, Lidia M V R; Mendez, Diego Yacaman; Jesus, Jonathan De; Andrade, Rogger A; Weissman, Joel S; Vickrey, Barbara G; Hoch, Daniel B

    2015-11-01

    We assessed the relationship between adherence to epilepsy quality measures (EQM) and seizure control over 2-3 years in a retrospective cohort study. 6150 patients were identified at two large academic medical centers with a primary or secondary diagnosis of epilepsy, were 18-85 years old and seen in outpatient general neurology or epilepsy units between June 2011 and May 2014. Patients were included if: their initial visit was between June 2011 and June 2012, treatment was with ≥1 anti-seizure drug, there was ≥1 visit per year during the timeframe, and seizure frequency was documented at initial and final visits, yielding 162 patients/1055 visits from which socio-demographic, clinical and care quality data were abstracted. Quality care was assessed as (1) percent adherence to up to 8 eligible EQM, and (2) defect-free care (DFC: adherence to all eligible EQM). Seizure control (SC) was defined as ≥50% reduction in average seizures/month between initial and final visits. Chi-square and t-test compared care quality with seizure control. Logistic regression was used to assess the relationships between SC, quality of care and subspecialist involvement. Care quality, reflected by documentation of seizure frequency, addressing therapeutic interventions, and referral to a comprehensive epilepsy center, all exceeded 80% adherence. Care quality as reflected by documentation of seizure type, etiology or syndrome; assessment of side effects, counseling about epilepsy safety and women's issues, and screening for psychiatric disorders ranged from 40 to 57%. Mean EQM adherence across all applicable measures was associated with greater seizure control (p=0.0098). DFC was low (=8%) and did not covary with seizure control (p=0.55). The SC and non-SC groups only differed on epilepsy etiology (p=0.04). Exploratory analysis showed that mean quality scores are associated with seizure control (OR=4.9 [1.3-18.5], p=0.017) while controlling for the effect of subspecialty involvement

  11. 40 CFR 75.21 - Quality assurance and quality control requirements.

    Science.gov (United States)

    2010-07-01

    ... quality assurance audit or any other audit, the system is out-of-control. The owner or operator shall... 40 Protection of Environment 16 2010-07-01 2010-07-01 false Quality assurance and quality control... assurance and quality control requirements. (a) Continuous emission monitoring systems. The owner or...

  12. Distributed sensor architecture for intelligent control that supports quality of control and quality of service.

    Science.gov (United States)

    Poza-Lujan, Jose-Luis; Posadas-Yagüe, Juan-Luis; Simó-Ten, José-Enrique; Simarro, Raúl; Benet, Ginés

    2015-02-25

    This paper is part of a study of intelligent architectures for distributed control and communications systems. The study focuses on optimizing control systems by evaluating the performance of middleware through quality of service (QoS) parameters and the optimization of control using Quality of Control (QoC) parameters. The main aim of this work is to study, design, develop, and evaluate a distributed control architecture based on the Data-Distribution Service for Real-Time Systems (DDS) communication standard as proposed by the Object Management Group (OMG). As a result of the study, an architecture called Frame-Sensor-Adapter to Control (FSACtrl) has been developed. FSACtrl provides a model to implement an intelligent distributed Event-Based Control (EBC) system with support to measure QoS and QoC parameters. The novelty consists of using, simultaneously, the measured QoS and QoC parameters to make decisions about the control action with a new method called Event Based Quality Integral Cycle. To validate the architecture, the first five Braitenberg vehicles have been implemented using the FSACtrl architecture. The experimental outcomes, demonstrate the convenience of using jointly QoS and QoC parameters in distributed control systems.

  13. Distributed Sensor Architecture for Intelligent Control that Supports Quality of Control and Quality of Service

    Directory of Open Access Journals (Sweden)

    Jose-Luis Poza-Lujan

    2015-02-01

    Full Text Available This paper is part of a study of intelligent architectures for distributed control and communications systems. The study focuses on optimizing control systems by evaluating the performance of middleware through quality of service (QoS parameters and the optimization of control using Quality of Control (QoC parameters. The main aim of this work is to study, design, develop, and evaluate a distributed control architecture based on the Data-Distribution Service for Real-Time Systems (DDS communication standard as proposed by the Object Management Group (OMG. As a result of the study, an architecture called Frame-Sensor-Adapter to Control (FSACtrl has been developed. FSACtrl provides a model to implement an intelligent distributed Event-Based Control (EBC system with support to measure QoS and QoC parameters. The novelty consists of using, simultaneously, the measured QoS and QoC parameters to make decisions about the control action with a new method called Event Based Quality Integral Cycle. To validate the architecture, the first five Braitenberg vehicles have been implemented using the FSACtrl architecture. The experimental outcomes, demonstrate the convenience of using jointly QoS and QoC parameters in distributed control systems.

  14. Effect of two Spanish breeds and diet on beef quality including consumer preferences.

    Science.gov (United States)

    Ripoll, Guillermo; Blanco, Mireia; Albertí, Pere; Panea, Begoña; Joy, Margalida; Casasús, Isabel

    2014-03-30

    Farmers in dry mountain areas are changing their management strategies to improve livestock farming efficiency, by using different forages or different breeds. The effect of breed (Parda de Montaña vs. Pirenaica) and finishing diet (grazing on meadows vs. a total mixed ration (50% alfalfa, 40% maize grain, 10% straw)) on carcass characteristics and meat quality of steers was studied. Parda de Montaña had a greater (P < 0.01) amount of intramuscular fat than Pirenaica. The finishing diet did not influence carcass fat color, but fatty acid composition was slightly affected. Finishing steers on a total mixed ration increased the percentage of fat of the 10th rib (P < 0.001). Supplementation with concentrates increased the diet energy concentration and also increased the dressing percentage. Both breeds had similar carcass characteristics. Consumers preferred beef from the Pirenaica breed because of its greater tenderness. Consumers did not differentiate between beef from animals fed different finishing diets. However, consumers who like meat very much preferred meat aged in a cooler at 4 °C for 15 days rather than 8 days. © 2013 Society of Chemical Industry.

  15. A phantom for quality control in mammography

    International Nuclear Information System (INIS)

    Gambaccini, M.; Rimondi, O.; Marziani, M.; Toti, A.

    1989-01-01

    A phantom for evaluating image quality in mammography has been designed and will be used in the Italian national programme ''Dose and Quality in Mammography''. The characteristics of the phantom are (a) about the same X-ray transmission as a 5 cm 50% fat and 50% water breast for energies between 15 and 50 keV and (b) optimum energies for imaging of the test objects (included in the phantom) in very close agreement with the optimum energies for imaging of calcifications and tumours in a 5 cm 50% fat and 50% water breast. An experimental comparison between the prototype and some commercial phantoms was carried out. Measurements are in progress to test the phantom's ability to evaluate the performances of mammographic systems quantitatively. (author)

  16. Quality control in quantitative computed tomography

    International Nuclear Information System (INIS)

    Jessen, K.A.; Joergensen, J.

    1989-01-01

    Computed tomography (CT) has for several years been an indispensable tool in diagnostic radiology, but it is only recently that extraction of quantitative information from CT images has been of practical clinical value. Only careful control of the scan parameters, and especially the scan geometry, allows useful information to be obtained; and it can be demonstrated by simple phantom measurements how sensitive a CT system can be to variations in size, shape and position of the phantom in the gantry aperture. Significant differences exist between systems that are not manifested in normal control of image quality and general performance tests. Therefore an actual system has to be analysed for its suitability for quantitative use of the images before critical clinical applications are justified. (author)

  17. Quality control of parasitology stool examination in Tabriz clinical laboratories

    Directory of Open Access Journals (Sweden)

    shahram Khademvatan

    2011-06-01

    Full Text Available The purpose of quality control program was to make doctors and laboratory personnel trust in laboratory results and consequently increasing confidence in laboratory achievements. The quality assurance means raising the level of quality in all tests that lead to raising the level of work efficiency and laboratories including minimum expense for society and minimum time for lab personnel. This study aimed to assess and determine the accuracy and precision of results in Tabriz medical diagnostic laboratories. Materials and Methods: In this retrospective study, 790 stool samples were selected randomly and tested by standard methods.Student t- test, SPSS software and sensitivity and accuracy formulas were used for data analysis. Results: The sensitivity was 62%, 22% and 8% with 95% confidence intervals for worm's eggs, protozoan cysts and trophozoite detection respectively. Conclusion: To elevate quality assurance in clinical diagnostic laboratory, monitoring and check of the laboratories by standard methods continually should be done.

  18. Implementation of imaging of the national protocol for quality control in planning systems

    International Nuclear Information System (INIS)

    Caudepon Moreno, F.; Martin-Viera cueto, J. A.; Bodineau gil, C.; Benitez Villegas, E. M.; Casado Villalon, F. J.; Moreno Sainz, C.

    2011-01-01

    Quality control of the planning system (SP) plays a key role in quality assurance schemes that include all stages of the radiotherapy process.In this work we focus on the evidence detailing the ''Protocol for quality control in therapy planning systems with ionizing radiation of the SEFM in ''anatomical data acquisition (DA).

  19. Implementation of quality control program in radiodiagnostic services

    International Nuclear Information System (INIS)

    Herrera S, A.; Roas Z, N.

    1995-01-01

    This monograph is the first version of the implementation of the quality control programme in radiology diagnostic services. Here all information related to diagnostic quality to better radiation protection to patients and personnel was collected. The programme was implemented on the X-ray equipment at three hospitals (named hospital A, hospital B and hospital C) and included the evaluation of technical parameters such as kilovolts, exposition time, filtration, fields. In addition, dark room, chassis and image intensifiers were also evaluated. The procedures to carry out the quality control and the manner in which the observations, conclusions and recommendations should be formulated are based on documents issued by the International Commission on Radiological Protection (I.C.R.P.), International Atomic Energy Agency (I.A.E.A.) and World Health Organization (W.H.O.)

  20. Experience with ISO quality control in assisted reproductive technology.

    Science.gov (United States)

    Alper, Michael M

    2013-12-01

    Assisted reproductive technology (ART) programs are complex organizations requiring the integration of multiple disciplines. ISO 9001:2008 is a quality management system that is readily adaptable to an ART program. The value that ISO brings to the entire organization includes control of documents, clear delineation of responsibilities of staff members, documentation of the numerous processes and procedures, improvement in tracking and reducing errors, and overall better control of systems. A quality ART program sets quality objectives and monitors their progress. ISO provides a sense of transparency within the organization and clearer understanding of how service is provided to patients. Most importantly, ISO provides the framework to allow for continual improvement. Copyright © 2013 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.

  1. Quality control of radioimmunoassay kits of pituitary hormones

    International Nuclear Information System (INIS)

    Caso Pena, R.; Arranz Calzado, C.

    1997-01-01

    The present work describe the quality control procedures carried out on three RIA-Kits by the Isotopes Centre of Cuba, The subject matter of study were ;: were: LH-RIA-Kit, FSH-RIA-Kit and Prolactin- RIA -Kit. The controls have included the characterization of the 125 I labelled hormones the specific antibodies, the 2 nd antibodies, the standards curves and the control serum. For the validation of these Kits were used reference standards from the WHO (World Health Organizations) and Kits from CIS company (France) based on the IRMA assays technologies . The results obtained allow us encourage the reliability of RIA-Kits

  2. Quality control and quality standards for the production of bone allografts in China

    International Nuclear Information System (INIS)

    Sun Shiquan; Li Youchen

    1999-01-01

    There is a rapid progress of tissue banking especially Bone Banking in China, In order to strengthen the control on medical devices, Ministry of Public Health (MPH) issued the 'Regulation on Supervision of Critical Medical Devices, MPH Decree No. 54' in 1997. The SPTB was requested to submit new application for the approval of production and providing of tissue allografts. The needed documents are clinical reports, package insert, quality standards of product, Quality System Regulation (QSR) and audit report. Quality System Regulation document adopted the GMP standard for medical devices of FDA, US (21 CFR 620-1997). SPTB will amend the existed Quality Manual to suit the requirement of QSR. Referring to the AATB Standards, SPTB established 'Technical Standards' for Tissue Banking and was approved by the local government, which will be the supplement of the submitted QSR document. Considering the need of market control, MPH requested to submit a 'Quality Standard of Product' and the method of inspection. SPTB has completed such standards for final inspection of bone products, which includes the test for residual water, microbiology, bone species, colour and structure. In addition, the Tissue Bank has completed standards for in process inspection, which includes residual blood, radiation sterilization, initial bioburden, package leakage and biomechanics. In-process inspection is important for the control of non-conforming final products to assure the safety and efficacy of bone grafts. Methods of in process inspection and final inspection are described and discussed in this paper

  3. Toward standardising gamma camera quality control procedures

    International Nuclear Information System (INIS)

    Alkhorayef, M.A.; Alnaaimi, M.A.; Alduaij, M.A.; Mohamed, M.O.; Ibahim, S.Y.; Alkandari, F.A.; Bradley, D.A.

    2015-01-01

    Attaining high standards of efficiency and reliability in the practice of nuclear medicine requires appropriate quality control (QC) programs. For instance, the regular evaluation and comparison of extrinsic and intrinsic flood-field uniformity enables the quick correction of many gamma camera problems. Whereas QC tests for uniformity are usually performed by exposing the gamma camera crystal to a uniform flux of gamma radiation from a source of known activity, such protocols can vary significantly. Thus, there is a need for optimization and standardization, in part to allow direct comparison between gamma cameras from different vendors. In the present study, intrinsic uniformity was examined as a function of source distance, source activity, source volume and number of counts. The extrinsic uniformity and spatial resolution were also examined. Proper standard QC procedures need to be implemented because of the continual development of nuclear medicine imaging technology and the rapid expansion and increasing complexity of hybrid imaging system data. The present work seeks to promote a set of standard testing procedures to contribute to the delivery of safe and effective nuclear medicine services. - Highlights: • Optimal parameters for quality control of the gamma camera are proposed. • For extrinsic and intrinsic uniformity a minimum of 15,000 counts is recommended. • For intrinsic flood uniformity the activity should not exceed 100 µCi (3.7 MBq). • For intrinsic uniformity the source to detector distance should be at least 60 cm. • The bar phantom measurement must be performed with at least 15 million counts.

  4. Performance and quality control of scintillation cameras

    International Nuclear Information System (INIS)

    Moretti, J.L.; Iachetti, D.

    1983-01-01

    Acceptance testing, quality and control assurance of gamma-cameras are a part of diagnostic quality in clinical practice. Several parameters are required to achieve a good diagnostic reliability: intrinsic spatial resolution, spatial linearity, uniformities, energy resolution, count-rate characteristics, multiple window spatial analysis. Each parameter was measured and also estimated by a test easy to implement in routine practice. Material required was a 4028 multichannel analyzer linked to a microcomputeur, mini-computers and a set of phantoms (parallel slits, diffusing phantom, orthogonal hole transmission pattern). Gamma-cameras on study were:CGR 3400, CGR 3420, G.E.4000. Siemens ZLC 75 and large field Philips. Several tests proposed by N.E.M.A. and W.H.O. have to be improved concerning too punctual spatial determinations during distortion measurements with multiple window. Contrast control of image need to be monitored with high counting rate. This study shows the need to avoid punctual determinations and the interest to give sets of values of the same parameter on the whole field and to report mean values with their standard variation [fr

  5. Quality control of radioiodinated gastrin for radioimmunoassay

    International Nuclear Information System (INIS)

    Ginabreda, M.G.P.; Borghi, V.C.; Bettarello, A.

    1988-07-01

    Radioiodinated human gastrin has been prepared at IPEN laboratory for radioimmunoassay use. This work developed the quality control of this tracer analyzing parameters of the labelling reaction, chromatographic purification and radioimmunoassay. The radioiodination yield obtained in five experiments was reproducible and similar when analyzed on 7% polyaraylamide gel eletrophoresis - PAGE - (mean + - SD of 51.70 + - 10.76%) and by1 25 I incorporation checked through thrichloroacetic acid precipitation - TCA - (57-36 + - 9.69%). Similary, after purification the labelled gastrin revaled high and reproducible purity degree when submitted to PAGE (96.57 + - 1.06%) and CA (94.82 + - 4.20%) analysis. The respective specific activities varied from 62 to 307 uCi/ug, being determined by the self-displacement method, which is based on the immunoactivity of the tracer. In this way, the antibody titers required to bind 50% of the tracer ranged from 1:32.000 to 1:180.000. Consequently, the respective doses producing 50% fall in the maximum response of the radioimmunoassays ranged from 155.0 to 24.0 pmol/1, but remained unchanged for each tracer even after three months of its preparations. The tracers presented very low non-specific binding values (1.78 + - 0.79%), stablespecific binding values (46.49 + - 5.65%) and a good between-assay precision, evaluated by an internal quality control sample (25.71 + - 4.30%) with coefficient of variation of 16.74%). The PAGE analysis of the unlabeled gastrin used in the first and last radioiodination revealed an unique and unaltered component, confirming the quality of the tracers. (author) [pt

  6. 7 CFR 58.141 - Alternate quality control program.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Alternate quality control program. 58.141 Section 58... Service 1 Quality Specifications for Raw Milk § 58.141 Alternate quality control program. When a plant has in operation an acceptable quality program, at the producer level, which is approved by the...

  7. Technology requirement for Halal quality control | Husny | Journal of ...

    African Journals Online (AJOL)

    Technology requirement for Halal quality control. ... Findings show that each industry segments have different technology characteristics preference. ... Keywords: halal industry, quality control; technology assistance; food and beverage; ...

  8. TS Fuzzy Model-Based Controller Design for a Class of Nonlinear Systems Including Nonsmooth Functions

    DEFF Research Database (Denmark)

    Vafamand, Navid; Asemani, Mohammad Hassan; Khayatiyan, Alireza

    2018-01-01

    This paper proposes a novel robust controller design for a class of nonlinear systems including hard nonlinearity functions. The proposed approach is based on Takagi-Sugeno (TS) fuzzy modeling, nonquadratic Lyapunov function, and nonparallel distributed compensation scheme. In this paper, a novel...... criterion, new robust controller design conditions in terms of linear matrix inequalities are derived. Three practical case studies, electric power steering system, a helicopter model and servo-mechanical system, are presented to demonstrate the importance of such class of nonlinear systems comprising...

  9. Quality control in public participation assessments of water quality: the OPAL Water Survey.

    Science.gov (United States)

    Rose, N L; Turner, S D; Goldsmith, B; Gosling, L; Davidson, T A

    2016-07-22

    Public participation in scientific data collection is a rapidly expanding field. In water quality surveys, the involvement of the public, usually as trained volunteers, generally includes the identification of aquatic invertebrates to a broad taxonomic level. However, quality assurance is often not addressed and remains a key concern for the acceptance of publicly-generated water quality data. The Open Air Laboratories (OPAL) Water Survey, launched in May 2010, aimed to encourage interest and participation in water science by developing a 'low-barrier-to-entry' water quality survey. During 2010, over 3000 participant-selected lakes and ponds were surveyed making this the largest public participation lake and pond survey undertaken to date in the UK. But the OPAL approach of using untrained volunteers and largely anonymous data submission exacerbates quality control concerns. A number of approaches were used in order to address data quality issues including: sensitivity analysis to determine differences due to operator, sampling effort and duration; direct comparisons of identification between participants and experienced scientists; the use of a self-assessment identification quiz; the use of multiple participant surveys to assess data variability at single sites over short periods of time; comparison of survey techniques with other measurement variables and with other metrics generally considered more accurate. These quality control approaches were then used to screen the OPAL Water Survey data to generate a more robust dataset. The OPAL Water Survey results provide a regional and national assessment of water quality as well as a first national picture of water clarity (as suspended solids concentrations). Less than 10 % of lakes and ponds surveyed were 'poor' quality while 26.8 % were in the highest water quality band. It is likely that there will always be a question mark over untrained volunteer generated data simply because quality assurance is uncertain

  10. Quality assurance (QA) training at Westinghouse including innovative approaches for achieving an effective QA programme and establishing constructive interaction

    International Nuclear Information System (INIS)

    Chivers, J.H.; Scanga, B.E.

    1982-01-01

    Experience of the Westinghouse Water Reactors Division with indoctrination and training of quality engineers includes training of personnel from Westinghouse divisions in the USA and overseas as well as of customers' personnel. A written plan is prepared for each trainee in order to fit the training to the individual's needs, and to cover the full range of information and activities. The trainee is also given work assignments, working closely with experienced quality engineers. He may prepare inspection plans and audit check lists, assist in the preparation of QA training modules, write procedures, and perform supplier surveillance and data analyses, or make special studies of operating systems. The trainee attends seminars and special courses on work-related technical subjects. Throughout the training period, emphasis is placed on inculcating an attitude of team work in the trainee so that the result of the training is the achievement of both quality and productivity. Certification is extended (given that education/experience/skill requirements are met) to such functions as mechanical equipment quality engineering, electrical equipment quality engineering, and start-up and testing quality engineering. A well-trained quality engineer is equipped to provide technical assistance to other disciplines and, through effective co-operation with others, contributes to the success of the organization's endeavours. (author)

  11. Quality control of MC and A system and integrated safeguards

    International Nuclear Information System (INIS)

    Osabe, Takeshi

    2000-01-01

    In the integrated safeguards regime, co-operation with SSAC is a vital element to achieve efficiency of safeguards implementation while maintaining the effectiveness. However, the degree of co-operation fully depends upon the credibility, technical capability and the transparency of SSAC. Since the credibility of SSAC (States' System of Accounting for and Control of Nuclear Materials) depends heavily on effectiveness of facility operator's Material Control and Accounting (MC and A) practice, some measures to provide continuous assurance of the function and effectiveness of the system such as quality assurance program including periodical system audit (diagnostic) function ought to be established. This paper discusses quality assurance program for facility level MC and A including audit (diagnostic) method to maintain continuous assurance of the effectiveness. (author)

  12. Managing Air Quality - Control Strategies to Achieve Air Pollution Reduction

    Science.gov (United States)

    Considerations in designing an effective control strategy related to air quality, controlling pollution sources, need for regional or national controls, steps to developing a control strategy, and additional EPA resources.

  13. 10 CFR 26.137 - Quality assurance and quality control.

    Science.gov (United States)

    2010-01-01

    ... cutoff concentration for the compound of interest, a control without the compound of interest (i.e., a certified negative control), and a control with at least one of the compounds of interest at a measurable... calibrator, a control without the compound of interest (i.e., a certified negative control), and a control...

  14. 14 CFR 21.147 - Changes in quality control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Changes in quality control system. 21.147 Section 21.147 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... quality control system. After the issue of a production certificate, each change to the quality control...

  15. 14 CFR 145.211 - Quality control system.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Quality control system. 145.211 Section 145...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.211 Quality control system. (a) A certificated repair station must establish and maintain a quality control system acceptable to...

  16. 7 CFR 58.523 - Laboratory and quality control tests.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Laboratory and quality control tests. 58.523 Section... Service 1 Operations and Operating Procedures § 58.523 Laboratory and quality control tests. (a) Quality control tests shall be made on samples as often as necessary to determine the shelf-life and stability of...

  17. 18 CFR 12.40 - Quality control programs.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Quality control... PROJECT WORKS Other Responsibilities of Applicant or Licensee § 12.40 Quality control programs. (a... meeting any requirements or standards set by the Regional Engineer. If a quality control program is...

  18. 21 CFR 640.56 - Quality control test for potency.

    Science.gov (United States)

    2010-04-01

    ... quality control test for potency may be performed by a clinical laboratory which meets the standards of... 21 Food and Drugs 7 2010-04-01 2010-04-01 false Quality control test for potency. 640.56 Section...) BIOLOGICS ADDITIONAL STANDARDS FOR HUMAN BLOOD AND BLOOD PRODUCTS Cryoprecipitate § 640.56 Quality control...

  19. Modeling and Control of Risley Prism Beam Steering Including BLDC Motors

    OpenAIRE

    Gunnarsson, Oscar

    2016-01-01

    Saab AB Training & Simulation is specialized on military training, including laserbased training. To continue being the world leader in this area, a new generationof laser simulators needs to be developed. To simplify the development of thishighly complex system, this master thesis have resulted in a MATLAB/Simulinkmodel which simulates the electro-opto/mechanical system representing theirlaser based simulation platform. The focus of this master thesis has been to simulateand control the ...

  20. Analytical quality control services of the International Atomic Energy Agency

    International Nuclear Information System (INIS)

    Suschny, O.

    1986-01-01

    The International Atomic Energy Agency provides quality control services to analytical laboratories. These services which include the provision of reference materials and the organisation of intercomparisons are rendered for the purpose of assisting laboratories in determining the accuracy of their analytical work. The following classes of materials are presently available: nuclear materials, environmental materials, animal and plant materials, materials for biomedical studies and materials of marine origin. (orig.) [de

  1. Quality control procedures on graphite, pyrocarbon and silconcarbide

    Energy Technology Data Exchange (ETDEWEB)

    Koizlik, K. [comp.

    1974-09-01

    The presented report includes those papers presented at the 8th meeting of the DP-QCWP in Winfrith which have been written by collaborators of the Institut fuer Reaktorwerkstoffe der Kernforschungsanlage Juelich, together with other co-authors. The papers deal with problems of standardizing characterization methods for the routine quality control of graphites and pyrolytic carbons as well as with more basic procedures (transmission electron microscopy, microporosity) for the analysis of pyrocarbon structure.

  2. Including mixed methods research in systematic reviews: Examples from qualitative syntheses in TB and malaria control

    Science.gov (United States)

    2012-01-01

    Background Health policy makers now have access to a greater number and variety of systematic reviews to inform different stages in the policy making process, including reviews of qualitative research. The inclusion of mixed methods studies in systematic reviews is increasing, but these studies pose particular challenges to methods of review. This article examines the quality of the reporting of mixed methods and qualitative-only studies. Methods We used two completed systematic reviews to generate a sample of qualitative studies and mixed method studies in order to make an assessment of how the quality of reporting and rigor of qualitative-only studies compares with that of mixed-methods studies. Results Overall, the reporting of qualitative studies in our sample was consistently better when compared with the reporting of mixed methods studies. We found that mixed methods studies are less likely to provide a description of the research conduct or qualitative data analysis procedures and less likely to be judged credible or provide rich data and thick description compared with standalone qualitative studies. Our time-related analysis shows that for both types of study, papers published since 2003 are more likely to report on the study context, describe analysis procedures, and be judged credible and provide rich data. However, the reporting of other aspects of research conduct (i.e. descriptions of the research question, the sampling strategy, and data collection methods) in mixed methods studies does not appear to have improved over time. Conclusions Mixed methods research makes an important contribution to health research in general, and could make a more substantial contribution to systematic reviews. Through our careful analysis of the quality of reporting of mixed methods and qualitative-only research, we have identified areas that deserve more attention in the conduct and reporting of mixed methods research. PMID:22545681

  3. Including mixed methods research in systematic reviews: examples from qualitative syntheses in TB and malaria control.

    Science.gov (United States)

    Atkins, Salla; Launiala, Annika; Kagaha, Alexander; Smith, Helen

    2012-04-30

    Health policy makers now have access to a greater number and variety of systematic reviews to inform different stages in the policy making process, including reviews of qualitative research. The inclusion of mixed methods studies in systematic reviews is increasing, but these studies pose particular challenges to methods of review. This article examines the quality of the reporting of mixed methods and qualitative-only studies. We used two completed systematic reviews to generate a sample of qualitative studies and mixed method studies in order to make an assessment of how the quality of reporting and rigor of qualitative-only studies compares with that of mixed-methods studies. Overall, the reporting of qualitative studies in our sample was consistently better when compared with the reporting of mixed methods studies. We found that mixed methods studies are less likely to provide a description of the research conduct or qualitative data analysis procedures and less likely to be judged credible or provide rich data and thick description compared with standalone qualitative studies. Our time-related analysis shows that for both types of study, papers published since 2003 are more likely to report on the study context, describe analysis procedures, and be judged credible and provide rich data. However, the reporting of other aspects of research conduct (i.e. descriptions of the research question, the sampling strategy, and data collection methods) in mixed methods studies does not appear to have improved over time. Mixed methods research makes an important contribution to health research in general, and could make a more substantial contribution to systematic reviews. Through our careful analysis of the quality of reporting of mixed methods and qualitative-only research, we have identified areas that deserve more attention in the conduct and reporting of mixed methods research.

  4. On the Necessity of Including Joint Passive Dynamics in the Impedance Control of Robotic Legs

    Directory of Open Access Journals (Sweden)

    Juan Carlos Arevalo

    2014-07-01

    Full Text Available Bioinspired quadruped robots are among the best robot designs for field missions over the complex terrain encountered in extraterrestrial landscapes and disaster scenarios caused by natural and human-made catastrophes, such as those caused by nuclear power plant accidents and radiological emergencies. For such applications, the performance characteristics of the robots should include high mobility, adaptability to the terrain, the ability to handle a large payload and good endurance. Nature can provide inspiration for quadruped designs that are well suited for traversing complex terrain. Horse legs are an example of a structure that has evolved to exhibit good performance characteristics. In this paper, a leg design exhibiting the key features of horse legs is briefly described. This leg is an underactuated mechanism because it has two actively driven degrees of freedom (DOFs and one passively driven DOF. In this work, two control laws intended to be use in the stan ce phase are described: a control law that considers passive mechanism dynamics and a second law that neglects these dynamics. The performance of the two control laws is experimentally evaluated and compared. The results indicate that the first control law better achieves the control goal; however, the use of the second is not completely unjustified.

  5. Quality control of ATLAS muon chambers

    CERN Document Server

    Fabich, Adrian

    ATLAS is a general-purpose experiment for the future Large Hadron Collider (LHC) at CERN. Its Muon Spectrometer will require ∼ 5500m2 of precision tracking chambers to measure the muon tracks along a spectrometer arm of 5m to 15m length, embedded in a magnetic field of ∼ 0.5T. The precision tracking devices in the Muon System will be high pressure drift tubes (MDTs). Approximately 370,000 MDTs will be assembled into ∼ 1200 drift chambers. The performance of the MDT chambers is very much dependent on the mechanical quality of the chambers. The uniformity and stability of the performance can only be assured providing very high quality control during production. Gas tightness, high-voltage behaviour and dark currents are global parameters which are common to gas detectors. For all chambers, they will be tested immediately after the chamber assembly at every production site. Functional tests, for example radioactive source scans and cosmic-ray runs, will be performed in order to establish detailed performan...

  6. Acceptance, commissioning and quality control in radiosurgery

    International Nuclear Information System (INIS)

    Toreti, Dalila Luzia

    2009-01-01

    Stereotactic Radiosurgery is a treatment technique that uses narrow beams of radiation focused with great accuracy in a small lesion. The introduction of micro multi leaf collimators (mMLC) allows this technique to reach a higher degree of dose conformation of the target lesion allowing a smaller irradiation of critical structures and normal tissues. This paper presents the results of the acceptance tests and commissioning of a Varian 6EX linear accelerator dedicated to radiosurgery associated with the BrainLab micro multi leaf collimator installed in the Hospital das Clinicas da Faculdade de Medicina da USP (HC-FMUSP) and establish feasible quality assurance program for the services that employ this special technique. The results of the acceptance tests were satisfactory and are willing with the specifications provided by the manufacturer and the commissioning tests were within the international recommendations. The tests and measures that are part of quality control process should be specific to each treatment unit, and the need, frequency and levels of tolerance

  7. Inhibitory Control Mediates the Association between Perceived Stress and Secure Relationship Quality

    OpenAIRE

    Toria Herd; Mengjiao Li; Dominique Maciejewski; Jacob Lee; Kirby Deater-Deckard; Brooks King-Casas; Jungmeen Kim-Spoon

    2018-01-01

    Past research has demonstrated negative associations between exposure to stressors and quality of interpersonal relationships among children and adolescents. Nevertheless, underlying mechanisms of this association remain unclear. Chronic stress has been shown to disrupt prefrontal functioning in the brain, including inhibitory control abilities, and evidence is accumulating that inhibitory control may play an important role in secure interpersonal relationship quality, including peer problems...

  8. Quality control tests for conventional mammography

    International Nuclear Information System (INIS)

    Dawod, Alnazer Ahmed Ibrahim

    2014-12-01

    Mammography is this the test that allows the radiologist to look at images of the inside of the breasts. Mammograms help detect breast cancer early successful treatment of breast cancer depends on that early diagnosis. Breast cancer is a very common condition. About one in every nine women develops breast cancer by the age of eighty. In addition to the clinical examination and self-examination, mammography plays important role in the detection of breast cancer before they become clinically visible tumors. The mammography is the most common test for early detection of breast cancer. Quality control techniques that done ensured importance of this programme to produce images with good diagnostic values and help radiologist to diagnose breast discase easily and avoid exposing patient to radiation hazards.(Author)

  9. Analytical quality control [An IAEA service

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1973-07-01

    In analytical chemistry the determination of small or trace amounts of elements or compounds in different types of materials is increasingly important. The results of these findings have a great influence on different fields of science, and on human life. Their reliability, precision and accuracy must, therefore, be checked by analytical quality control measures. The International Atomic Energy Agency (IAEA) set up an Analytical Quality Control Service (AQCS) in 1962 to assist laboratories in Member States in the assessment of their reliability in radionuclide analysis, and in other branches of applied analysis in which radionuclides may be used as analytical implements. For practical reasons, most analytical laboratories are not in a position to check accuracy internally, as frequently resources are available for only one method; standardized sample material, particularly in the case of trace analysis, is not available and can be prepared by the institutes themselves only in exceptional cases; intercomparisons are organized rather seldom and many important types of analysis are so far not covered. AQCS assistance is provided by the shipment to laboratories of standard reference materials containing known quantities of different trace elements or radionuclides, as well as by the organization of analytical intercomparisons in which the participating laboratories are provided with aliquots of homogenized material of unknown composition for analysis. In the latter case the laboratories report their data to the Agency's laboratory, which calculates averages and distributions of results and advises each laboratory of its performance relative to all the others. Throughout the years several dozens of intercomparisons have been organized and many thousands of samples provided. The service offered, as a consequence, has grown enormously. The programme for 1973 and 1974, which is currently being distributed to Member States, will contain 31 different types of materials.

  10. The growing need for analytical quality control

    International Nuclear Information System (INIS)

    Suschny, O.; Richman, D.M.

    1974-01-01

    Technological development in a country is directly dependent upon its analytical chemistry or measurement capability, because it is impossible to achieve any level of technological sophistication without the ability to measure. Measurement capability is needed to determine both technological competence and technological consequence. But measurement itself is insufficient. There must be a standard or a reference for comparison. In the complicated world of chemistry the need for reference materials grows with successful technological development. The International Atomic Energy Agency has been distributing calibrated radioisotope solutions, standard reference materials and intercomparison materials since the early 1960's. The purpose of this activity has been to help laboratories in its Member States to assess and, if necessary, to improve the reliability of their analytical work. The value and continued need of this service has been demonstrated by the results of many intercomparisons which proved that without continuing analytical quality control activities, adequate reliability of analytical data could not be taken for granted. Analytical chemistry, lacking the glamour of other aspects of the physical sciences, has not attracted the attention it deserves, but in terms of practical importance, it warrants high priority in any developing technological scheme, because without it there is little chance to evaluate technological success or failure or opportunity to identify the reasons for success or failure. The scope and the size of the future programme of the IAEA in this field has been delineated by recommendations made by several Panels of Experts; all have agreed on the importance of this programme and made detailed recommendations in their areas of expertise. The Agency's resources are limited and it cannot on its own undertake the preparation and distribution of all the materials needed. It can, however, offer a focal point to bring together different

  11. Quality control protocols for radiodiagnosis agents and radiopharmaceuticals; Protocolos de control de calidad para agentes de radiodiagnostico y radiofarmacos

    Energy Technology Data Exchange (ETDEWEB)

    Robles, A; Condor, M; Caballero, J; Morote, M; Garcia, C; Benites, M

    1997-07-01

    Based on the compilation of pharmacopoeia methods, literature, manuals and other information developed in our laboratory, protocols have been prepared to carry out quality controls for radiodiagnosis agents (RDA), better known as kits and RDA labelled with Tc99m. Quality control protocols cover physicochemical and biological controls. Physicochemical controls described for RDA include physical characteristics, particle size and number, pH, chemical identification, humidity, tin II; whereas biological controls include sterility, acute toxicity and bacterial endotoxin determination (LAL). Physicochemical controls described for radiopharmaceuticals labelled with Tc99m are pH and radiochemical purity; while biological distribution is described as a biological control.

  12. Terms and definitions of quality assurance/quality control

    International Nuclear Information System (INIS)

    Kaden, W.

    1980-01-01

    Terms of quality assurance are defined and interpreted. Reference is made to the IAEA Code of Practice and to other important Codes and Standards like ANSI, ASME and KTA. The relevance of these terms to everyday's work and problems of a quality assurance engineer is explained. (orig.)

  13. [Compatibility of different quality control systems].

    Science.gov (United States)

    Invernizzi, Enrico

    2002-01-01

    Management of the good laboratory practice (GLP) quality system presupposes its linking to a basic recognized and approved quality system, from which it can draw on management procedures common to all quality systems, such as the ISO 9000 set of norms. A quality system organized in this way can also be integrated with other dedicated quality systems, or parts of them, to obtain principles or management procedures for specific topics. The aim of this organization is to set up a reliable, recognized quality system compatible with the principles of GLP and other quality management systems, which provides users with a simplified set of easily accessible management tools and answers. The organization of this quality system is set out in the quality assurance programme, which is actually the document in which the test facility incorporates the GLP principles into its own quality organization.

  14. Women and tobacco: a call for including gender in tobacco control research, policy and practice.

    Science.gov (United States)

    Amos, Amanda; Greaves, Lorraine; Nichter, Mimi; Bloch, Michele

    2012-03-01

    Female smoking is predicted to double between 2005 and 2025. There have been numerous calls for action on women's tobacco use over the past two decades. In the present work, evidence about female tobacco use, progress, challenges and ways forward for developing gendered tobacco control is reviewed. Literature on girls, women and tobacco was reviewed to identify trends and determinants of tobacco use and exposure, the application of gender analysis, tobacco marketing, the impact of tobacco control on girls and women and ways to address these issues particularly in low-income and middle-income countries. Global female tobacco use is increasingly complex, involving diverse products and factors including tobacco marketing, globalisation and changes in women's status. In high-income countries female smoking is declining but is increasingly concentrated among disadvantaged women. In low-income and middle-income countries the pattern is more complex; in several regions the gap between girls' and boys' smoking is narrow. Gendered analyses and approaches to tobacco control are uncommon, especially in low-income and middle-income countries. Tobacco control has remained largely gender blind, with little recognition of the importance of understanding the context and challenges of girl's and women's smoking and secondhand smoke exposure. There has been little integration of gender considerations in research, policy and programmes. The present work makes a case for gender and diversity analyses in tobacco control to reflect and identify intersecting factors affecting women's tobacco use. This will help animate the WHO Framework Convention on Tobacco Control's concern for gender specificity and women's leadership, and reduce the impact of tobacco on women.

  15. New approach for quality control in manufacturing process

    Science.gov (United States)

    Hanzah, Muhammad Radhi bin; Rahim, Wan Mohd Faizal Wan Abd; Khor, C. Y.; Ishak, Muhammad Ikman; Rosli, M. U.; Jamalludin, Mohd Riduan; Zakaria, M. S.; Nawi, M. A. M.

    2017-09-01

    This study was regulated exclusively in view of theoretical aspect and further research should be done to demonstrate it in the genuine circumstance. The structure of this investigation including two industrial visits, i.e. interviews and meeting with approved staff from each organization agents. This review is cut up into two sections. Aside from the perception, little gatherings with the staffs from both organizations are held. With the subtle elements, the review is begun up. The aim of the study is characterized as to enhance the assessment strategy at quality control station to minimize defect outflow to the following client. This is to investigate the underlying factor in ebb and flow quality control framework so that another strategy to enhance quality control framework can implemented. Quality is a basic characteristic to be instated so that the end goal to fulfill clients' need is achieved. After a long hypothetical review is made, the best answer for be actualized at QG station to beat defects outflow to the following customer is by photoelectric sensor. It is reasonable, simple to keep up and has a high affectability to identify the defective items at the QG station.

  16. The value of including spirometry in health checks - a randomized controlled study in primary health care

    DEFF Research Database (Denmark)

    Ørts, Lene Maria; Ottesen, Anders Løkke; Bjerregaard, Anne-Louise

    Background Lung diseases are among the most frequent and most serious ailments in Denmark. Preventive health checks including spirometry can be used to detect lung diseases earlier. Over time the attendance at preventive health checks has decreased and at present the response rate is approximately...... 50%. Little is known about initiatives that can influence the attendance rate. Objectives To examine whether focused information on spirometry in the invitation material will influence the attendance in preventive health checks. Materiel/Methods Design: A randomized controlled study on information...... on spirometry embedded in “Check your health Prevention Program, CHPP” from 2015-16. CHPP is a house-hold cluster randomized controlled trial offering a preventive health check to 30-49 year olds in a Danish municipality during the years 2012 through to 2017 (n= 26,216), carried out in collaboration between...

  17. Radiological protection and quality control for diagnostic radiology in China

    International Nuclear Information System (INIS)

    Baorong, Yue

    2008-01-01

    Full text: There are 43,000 diagnostic departments, nearly 70,000 X-ray diagnostic facilities, 7,000 CT, 250 million for the annual total numbers of X-ray examinations, 120,000 occupationally exposed workers in diagnostic radiology. 'Basic standards for protection against ionizing radiation and for the safety of radiation sources' is promulgated on October, 2002. This basic standard follows the BSS. 'Rule on the administration of radio-diagnosis and radiotherapy', as a order of the Ministry of Health No. 46, is promulgated by Minister of Health on January 24, 2006. It includes general provisions, requirements and practice, establishment and approval of radio-diagnosis and radiotherapy services, safeguards and quality assurance, and so on. There are a series of radiological protection standards and quality control standards in diagnostic radiology, including 'radiological protection standard for the examination in X-ray diagnosis', 'radiological health protection standards for X-ray examination of child-bearing age women and pregnant women', 'radiological protection standards for the children in X-ray diagnosis', 'standards for radiological protection in medical X-ray diagnosis', 'specification for radiological protection monitoring in medical X-ray diagnosis', 'guide for reasonable application of medical X-ray diagnosis', 'general aspects for quality assurance in medical X-ray image of diagnosis', 'specification of image quality control test for the medical X-ray diagnostic equipment', 'specification of image quality assurance test for X-ray equipment for computed tomography', 'specification for testing of quality control in computed radiography (CR)' and 'specification for testing of quality control in X-ray mammography'. With the X-ray diagnostic equipment, there are acceptant tests, status tests and routing tests in large hospitals. It is poor for routing test in middle and smaller hospitals. CT is used widely in diagnostic radiology, however most workers in CT

  18. Low Level RF Including a Sophisticated Phase Control System for CTF3

    CERN Document Server

    Mourier, J; Nonglaton, J M; Syratchev, I V; Tanner, L

    2004-01-01

    CTF3 (CLIC Test Facility 3), currently under construction at CERN, is a test facility designed to demonstrate the key feasibility issues of the CLIC (Compact LInear Collider) two-beam scheme. When completed, this facility will consist of a 150 MeV linac followed by two rings for bunch-interleaving, and a test stand where 30 GHz power will be generated. In this paper, the work that has been carried out on the linac's low power RF system is described. This includes, in particular, a sophisticated phase control system for the RF pulse compressor to produce a flat-top rectangular pulse over 1.4 µs.

  19. Chapter 5: Quality assurance/quality control in stormwater sampling

    Science.gov (United States)

    Sampling the quality of stormwater presents unique challenges because stormwater flow is relatively short-lived with drastic variability. Furthermore, storm events often occur with little advance warning, outside conventional work hours, and under adverse weather conditions. Therefore, most stormwat...

  20. Modelling and control of a microgrid including photovoltaic and wind generation

    Science.gov (United States)

    Hussain, Mohammed Touseef

    Extensive increase of distributed generation (DG) penetration and the existence of multiple DG units at distribution level have introduced the notion of micro-grid. This thesis develops a detailed non-linear and small-signal dynamic model of a microgrid that includes PV, wind and conventional small scale generation along with their power electronics interfaces and the filters. The models developed evaluate the amount of generation mix from various DGs for satisfactory steady state operation of the microgrid. In order to understand the interaction of the DGs on microgrid system initially two simpler configurations were considered. The first one consists of microalternator, PV and their electronics, and the second system consists of microalternator and wind system each connected to the power system grid. Nonlinear and linear state space model of each microgrid are developed. Small signal analysis showed that the large participation of PV/wind can drive the microgrid to the brink of unstable region without adequate control. Non-linear simulations are carried out to verify the results obtained through small-signal analysis. The role of the extent of generation mix of a composite microgrid consisting of wind, PV and conventional generation was investigated next. The findings of the smaller systems were verified through nonlinear and small signal modeling. A central supervisory capacitor energy storage controller interfaced through a STATCOM was proposed to monitor and enhance the microgrid operation. The potential of various control inputs to provide additional damping to the system has been evaluated through decomposition techniques. The signals identified to have damping contents were employed to design the supervisory control system. The controller gains were tuned through an optimal pole placement technique. Simulation studies demonstrate that the STATCOM voltage phase angle and PV inverter phase angle were the best inputs for enhanced stability boundaries.

  1. 21 CFR 111.117 - What quality control operations are required for equipment, instruments, and controls?

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false What quality control operations are required for equipment, instruments, and controls? 111.117 Section 111.117 Food and Drugs FOOD AND DRUG ADMINISTRATION... and Process Control System: Requirements for Quality Control § 111.117 What quality control operations...

  2. Quality control and characterization of bentonite materials

    International Nuclear Information System (INIS)

    Kiviranta, L.; Kumpulainen, S.

    2011-12-01

    . Thus, in a certain extent, index tests can be used to determine the smectite content indicatively for quality control purposes. Previously set acceptance testing requirement limits for swelling index, liquid limit and CEC should be reconsidered, since Ca-bentonite tested in this study did not fulfill the requirement for swelling index, the previously set liquid limit requirement value was way below the values measured in this study, and because the previously set CEC requirement limits were based on a technique that needed different requirement limits for Na- and Ca-bentonites, on contrary to the method used in this study.(orig.)

  3. Design of common software for quality control of SPECT

    International Nuclear Information System (INIS)

    Li Xiaohua; Gao Ruzhen; Chen Shengzu

    1993-01-01

    The goal of this study is to design a common testing system for SPECT quality control according to NEMA standard. Using the system, the performances of different types of SPECT can be tested, so that the acceptance testing, performance comparing and routine quality control for SPECT can be normalized. The system was based on IBM PC series of microcomputer. Testing data are acquired from various types of SPECT, then transferred into IBM PC through interface and tested with an unique testing program. Two parts were included: interface and SPECT testing program. It emphatically studied the managing program of RS232 interface, designing skills and the mathematic patterns of SPECT testing program. The system which was composed of 11 subroutines can be used to measure the performances for both gamma camera and SPECT. The system was tested on OMEGA 500/MCS 560 SPECT and the results showed that it is effective, accurate and easy to use

  4. [Technological innovations in radiation oncology require specific quality controls].

    Science.gov (United States)

    Lenaerts, E; Mathot, M

    2014-01-01

    During the last decade, the field of radiotherapy has benefited from major technological innovations and continuously improving treatment efficacy, comfort and safety of patients. This mainly concerns the imaging techniques that allow 4D CT scan recording the respiratory phases, on-board imaging on linear accelerators that ensure perfect positioning of the patient for treatment and irradiation techniques that reduce very significantly the duration of treatment sessions without compromising quality of the treatment plan, including IMRT (Intensity Modulated Radiation Therapy) and VMAT (Volumetric Modulated Arc therapy). In this context of rapid technological change, it is the responsibility of medical physicists to regularly and precisely monitor the perfect functioning of new techniques to ensure patient safety. This requires the use of specific quality control equipment best suited to these new techniques. We will briefly describe the measurement system Delta4 used to control individualized treatment plan for each patient treated with VMAT technology.

  5. Electronic Nose for Microbiological Quality Control of Food Products

    Directory of Open Access Journals (Sweden)

    M. Falasconi

    2012-01-01

    Full Text Available Electronic noses (ENs have recently emerged as valuable candidates in various areas of food quality control and traceability, including microbial contamination diagnosis. In this paper, the EN technology for microbiological screening of food products is reviewed. Four paradigmatic and diverse case studies are presented: (a Alicyclobacillus spp. spoilage of fruit juices, (b early detection of microbial contamination in processed tomatoes, (c screening of fungal and fumonisin contamination of maize grains, and (d fungal contamination on green coffee beans. Despite many successful results, the high intrinsic variability of food samples together with persisting limits of the sensor technology still impairs ENs trustful applications at the industrial scale. Both advantages and drawbacks of sensor technology in food quality control are discussed. Finally, recent trends and future directions are illustrated.

  6. Characteristics That Differentiate Telecommuting from Non-Telecommuting Professionals in the Quality Assurance and Quality Control Arena

    Science.gov (United States)

    Claybon, Tina S.

    2013-01-01

    The interest in working from home in contrast to going to an office continues to be a growing phenomenon. This research examined personal characteristics of telecommuters and non-telecommuters including age, gender, years of working for the organization, and job satisfaction in the quality control and quality assurance arena. This study aimed to…

  7. 7 CFR 58.733 - Quality control tests.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Quality control tests. 58.733 Section 58.733... Procedures § 58.733 Quality control tests. (a) Chemical analyses. The following chemical analyses shall be... pasteurization by means of the phosphatase test, as well as any other tests necessary to assure good quality...

  8. Minimal requirements for quality controls in radiotherapy with external beams

    International Nuclear Information System (INIS)

    1999-01-01

    Physical dosimetric guidelines have been developed by the Italian National Institute of Health study group on quality assurance in radiotherapy to define protocols for quality controls in external beam radiotherapy. While the document does not determine strict rules or firm recommendations, it suggests minimal requirements for quality controls necessary to guarantee an adequate degree of accuracy in external beam radiotherapy [it

  9. 10 CFR 26.167 - Quality assurance and quality control.

    Science.gov (United States)

    2010-01-01

    ... at the appropriate cutoff concentration for the compound of interest as specified in § 26.161(c) and (f), a control without the compound of interest (i.e., a certified negative control), and at least one control with one of the compounds of interest at a measurable concentration; and (ii) A...

  10. SALE, Quality Control of Analytical Chemical Measurements

    International Nuclear Information System (INIS)

    Bush, W.J.; Gentillon, C.D.

    1985-01-01

    1 - Description of problem or function: The Safeguards Analytical Laboratory Evaluation (SALE) program is a statistical analysis program written to analyze the data received from laboratories participating in the SALE quality control and evaluation program. The system is aimed at identifying and reducing analytical chemical measurement errors. Samples of well-characterized materials are distributed to laboratory participants at periodic intervals for determination of uranium or plutonium concentration and isotopic distributions. The results of these determinations are statistically evaluated and participants are informed of the accuracy and precision of their results. 2 - Method of solution: Various statistical techniques produce the SALE output. Assuming an unbalanced nested design, an analysis of variance is performed, resulting in a test of significance for time and analyst effects. A trend test is performed. Both within- laboratory and between-laboratory standard deviations are calculated. 3 - Restrictions on the complexity of the problem: Up to 1500 pieces of data for each nuclear material sampled by a maximum of 75 laboratories may be analyzed

  11. Quality control chart for crushed granite concrete

    Directory of Open Access Journals (Sweden)

    Ewa E. DESMOND

    2016-07-01

    Full Text Available A chart for assessing in-situ grade (strength of concrete, has been developed in this study. Four grades of concrete after the Nigerian General Specification for Roads and bridges (NGSRB-C20, C25, C30 and C35, is studied at different water-cement ratios for medium and high slump range. The concrete mixes are made from crushed granite rock as coarse aggregate with river sand as fine aggregate. Compression test on specimens are conducted at curing age of 1, 3, 7, 14, 21, 28 and 56 days. Results on concrete workability from slump values, and water-cement ratios revealed that specimens with lower water-cement ratio were less workable but had higher strength, compared to mixes with higher water cement ratio. A simple algorithm using nonlinear regression analysis performed on each experimental data set produced Strength-Age (S-A curves which were used to establish a quality control chart. The accuracy of these curves were evaluated by computing average absolute error (AAS, the error of estimate (EoE and the average absolute error of estimate (Abs EoE for each concrete mix. These were done based on the actual average experimental strengths to measure how close the predicted values are to the experimental data set. The absolute average error of estimate (Abs. EoE recorded was less than ±10% tolerance zone for concrete works.

  12. The IAEA's programme in analytical quality control

    International Nuclear Information System (INIS)

    Suschny, O.

    1980-10-01

    The purpose of the Analytical Quality Control Programme of the International Atomic Energy Agency is to help laboratories in the Agency's Member States to assess and, if necessary, to improve the reliability of their analytical work in areas related to nuclear technology and radioisotope utilisation. This is done by the organisation of analytical intercomparisons and by the provision of certified or uncertified reference materials. Recently intercomparisons have been organised of trace element analysis in a soil and a lake sediment sample which have led to the certification of two new reference materials, SOIL-5 and SL-1 (lake sediment). A technique has been developed to recognise and to remove outlying results. Criteria have been established to classify element-concentration values into the categories ''established with a high degree of confidence'', ''established with a reasonable degree of confidence'' and ''information value only''. Four radionuclide intercomparisons have recently been carried out: W-1/1 and W-2/1 of the determination of selected radionuclides in water and Air-1/1 and Air-2/1 of that of selected radionuclides on simulated air filters. Details of the preparation of materials for these intercomparisons, and of data treatment and some results are discussed in the paper

  13. The quality control theory of aging

    Directory of Open Access Journals (Sweden)

    Warren Ladiges

    2014-05-01

    Full Text Available The quality control (QC theory of aging is based on the concept that aging is the result of a reduction in QC of cellular systems designed to maintain lifelong homeostasis. Four QC systems associated with aging are 1 inadequate protein processing in a distressed endoplasmic reticulum (ER; 2 histone deacetylase (HDAC processing of genomic histones and gene silencing; 3 suppressed AMPK nutrient sensing with inefficient energy utilization and excessive fat accumulation; and 4 beta-adrenergic receptor (BAR signaling and environmental and emotional stress. Reprogramming these systems to maintain efficiency and prevent aging would be a rational strategy for increased lifespan and improved health. The QC theory can be tested with a pharmacological approach using three well-known and safe, FDA-approved drugs: 1 phenyl butyric acid, a chemical chaperone that enhances ER function and is also an HDAC inhibitor, 2 metformin, which activates AMPK and is used to treat type 2 diabetes, and 3 propranolol, a beta blocker which inhibits BAR signaling and is used to treat hypertension and anxiety. A critical aspect of the QC theory, then, is that aging is associated with multiple cellular systems that can be targeted with drug combinations more effectively than with single drugs. But more importantly, these drug combinations will effectively prevent, delay, or reverse chronic diseases of aging that impose such a tremendous health burden on our society.

  14. The quality control theory of aging.

    Science.gov (United States)

    Ladiges, Warren

    2014-01-01

    The quality control (QC) theory of aging is based on the concept that aging is the result of a reduction in QC of cellular systems designed to maintain lifelong homeostasis. Four QC systems associated with aging are 1) inadequate protein processing in a distressed endoplasmic reticulum (ER); 2) histone deacetylase (HDAC) processing of genomic histones and gene silencing; 3) suppressed AMPK nutrient sensing with inefficient energy utilization and excessive fat accumulation; and 4) beta-adrenergic receptor (BAR) signaling and environmental and emotional stress. Reprogramming these systems to maintain efficiency and prevent aging would be a rational strategy for increased lifespan and improved health. The QC theory can be tested with a pharmacological approach using three well-known and safe, FDA-approved drugs: 1) phenyl butyric acid, a chemical chaperone that enhances ER function and is also an HDAC inhibitor, 2) metformin, which activates AMPK and is used to treat type 2 diabetes, and 3) propranolol, a beta blocker which inhibits BAR signaling and is used to treat hypertension and anxiety. A critical aspect of the QC theory, then, is that aging is associated with multiple cellular systems that can be targeted with drug combinations more effectively than with single drugs. But more importantly, these drug combinations will effectively prevent, delay, or reverse chronic diseases of aging that impose such a tremendous health burden on our society.

  15. Quality control culture of diagnostic ultrasound parameters

    International Nuclear Information System (INIS)

    Andam, A.A.B; Addison, E.C.K.; Aggry-Smith, S.; Nani, E.K.

    2003-01-01

    A phantom, consisting of two phases, has been designed and constructed to mimic the human body. The phase one phantom was designed to mimic a a surface lesion in the human body and the phase two phantom designed to mimic a section of the whole body. Ultrasound scans of the phantom were acquired for various material in the phantom at six hospitals in Kumasi, Ghana. A linear array transducer with parallel beams having a convex probe and a 3.5 MHz ultrasound frequency were used to carry out the experiment. It was observed that the depth of penetration of ultrasound, which constitutes the maximum depth of visualization or sensitivity, is determined by the frequency of the transducer, the attenuation of the medium being imaged and the system settings. Uniformity and linearity of the machines investigated were found to be within clinically acceptable standards. Spatial resolution, comprising axial and lateral resolutions, was observed to be satisfactory for the machines tested. It was observed that lateral resolution improved with the narrowing of the beam width. The ultrasound scanners at the selected hospitals were found to be operating at the expected level of performance. This work highlights the importance of putting in place a locally based mechanism for quality control of diagnostic ultrasound machines (author)

  16. QUALITY CONTROL OF SOME TRADITIONAL MEAT PRODUCTS

    Directory of Open Access Journals (Sweden)

    S. DOBRINAS

    2014-03-01

    Full Text Available In this paper, we present the characterization of six traditional meat products: smoked file, smoked bacon, pork sausages, sausage prepared from swine’s entrails, pork pastrami, sheep sausages. Organoleptic tests (the aspect and shape, the aspect of freshly cut in the section, smell, taste and consistency, physico-chemical and microbiological determinations (NTG, Salmonella, Listeria monocytogenes and Escherichia coli were performed. These analyzes are a part of quality control that must be done in order to obtain a certificate from the Ministry of Agriculture for a traditional product. After identification of H2S and starch and according to fat oxidation degree it was concluded that analyzed samples didn’t contain counterfeiters and all parameters analyzed are within the maximum limits allowed by law. Considering all the procedures for manufacturing, characteristics of raw and auxiliary materials, organoleptic properties of final products analyzed in this study, it can be concluded that analyzed meat specialties meet the requirements of Ministry Order no. 690/28.09.2004 for the traditional products certification.

  17. Bacterial lipoproteins; biogenesis, sorting and quality control.

    Science.gov (United States)

    Narita, Shin-Ichiro; Tokuda, Hajime

    2017-11-01

    Bacterial lipoproteins are a subset of membrane proteins localized on either leaflet of the lipid bilayer. These proteins are anchored to membranes through their N-terminal lipid moiety attached to a conserved Cys. Since the protein moiety of most lipoproteins is hydrophilic, they are expected to play various roles in a hydrophilic environment outside the cytoplasmic membrane. Gram-negative bacteria such as Escherichia coli possess an outer membrane, to which most lipoproteins are sorted. The Lol pathway plays a central role in the sorting of lipoproteins to the outer membrane after lipoprotein precursors are processed to mature forms in the cytoplasmic membrane. Most lipoproteins are anchored to the inner leaflet of the outer membrane with their protein moiety in the periplasm. However, recent studies indicated that some lipoproteins further undergo topology change in the outer membrane, and play critical roles in the biogenesis and quality control of the outer membrane. This article is part of a Special Issue entitled: Bacterial Lipids edited by Russell E. Bishop. Copyright © 2016 Elsevier B.V. All rights reserved.

  18. Quality Control in Diagnostic Radiology: Experiences and Achievements

    International Nuclear Information System (INIS)

    Mohd Khalid Matori; Husaini Salleh; Muhammad Jamal Md Isa

    2015-01-01

    Malaysian Nuclear Agency through its Medical Physics Group has been providing Quality Control (QC) services for medical X-ray apparatus used in diagnostic radiology to private clinics and hospitals since the year 1997. The Medical Physics Groups services is endorsed by the Malaysian Ministry Of Health (MOH) and is in accordance with the Malaysian Standard MS 838 and the Atomic Energy Licensing Act, 1984. Until today, the scopes of testing services also include all types of medical x-ray apparatus. The quality control (QC) in diagnostic radiology is considered as part of quality assurance program which provide accurate diagnostic information at the lowest cost and the least exposure of the patients to radiation. Many experience and obstacles were faced by Medical Physics Group. This paper will discuss the experiences and achievements of providing QC service from early stage until now so that it can be shared by the citizens of the Malaysian Nuclear Agency. The results of quality assurance inspection of all types of X-ray apparatus for medical conducted by Agency Nuclear Malaysia will be presented in brief. (author)

  19. Internal quality control indicators of cervical cytopathology exams performed in laboratories monitored by the External Quality Control Laboratory.

    Science.gov (United States)

    Ázara, Cinara Zago Silveira; Manrique, Edna Joana Cláudio; Tavares, Suelene Brito do Nascimento; de Souza, Nadja Lindany Alves; Amaral, Rita Goreti

    2014-09-01

    To evaluate the impact of continued education provided by an external quality control laboratory on the indicators of internal quality control of cytopathology exams. The internal quality assurance indicators for cytopathology exams from 12 laboratories monitored by the External Quality Control Laboratory were evaluated. Overall, 185,194 exams were included, 98,133 of which referred to the period preceding implementation of a continued education program, while 87,061 referred to the period following this intervention. Data were obtained from the Cervical Cancer Database of the Brazilian National Health Service. Following implementation of the continued education program, the positivity index (PI) remained within recommended limits in four laboratories. In another four laboratories, the PI progressed from below the limits to within the recommended standards. In one laboratory, the PI remained low, in two laboratories, it remained very low, and in one, it increased from very low to low. The percentage of exams compatible with a high-grade squamous intraepithelial lesion (HSIL) remained within the recommended limits in five laboratories, while in three laboratories it progressed from below the recommended levels to >0.4% of the total number of satisfactory exams, and in four laboratories it remained below the standard limit. Both the percentage of atypical squamous cells of undetermined significance (ASC-US) in relation to abnormal exams, and the ratio between ASC-US and intraepithelial lesions remained within recommended levels in all the laboratories investigated. An improvement was found in the indicators represented by the positivity index and the percentage of exams compatible with a high-grade squamous intraepithelial lesion, showing that the role played by the external quality control laboratory in providing continued education contributed towards improving laboratory staff skills in detecting cervical cancer precursor lesions.

  20. Evaluating Tobacco Control Policies in 28 Countries (including 9 EU countries: The ITC Project

    Directory of Open Access Journals (Sweden)

    Geoffrey Fong

    2016-03-01

    Full Text Available Since its start in 2002, the ITC Project has been conducting evaluation studies of tobacco control policies via prospective cohort surveys of tobacco users in 28 countries, including 9 EU countries. This presentation will focus on the design of the ITC Project and how it differs from and complements existing evidence-gathering systems (monitoring and surveillance systems in measuring and understanding the impact of FCTC policies. The presentation will also describe the ITC Project's most recent initiatives: (1 the EUREST-PLUS study focusing on measuring the impact of the Tobacco Products Directive, and (2 a large-scale international cohort study of e-cigarettes starting in the United States, Canada, England, and Australia.

  1. Engine including hydraulically actuated valvetrain and method of valve overlap control

    Science.gov (United States)

    Cowgill, Joel [White Lake, MI

    2012-05-08

    An exhaust valve control method may include displacing an exhaust valve in communication with the combustion chamber of an engine to an open position using a hydraulic exhaust valve actuation system and returning the exhaust valve to a closed position using the hydraulic exhaust valve actuation assembly. During closing, the exhaust valve may be displaced for a first duration from the open position to an intermediate closing position at a first velocity by operating the hydraulic exhaust valve actuation assembly in a first mode. The exhaust valve may be displaced for a second duration greater than the first duration from the intermediate closing position to a fully closed position at a second velocity at least eighty percent less than the first velocity by operating the hydraulic exhaust valve actuation assembly in a second mode.

  2. Descriptive study of the quality control in mammography

    International Nuclear Information System (INIS)

    Gaona, E.; Perdigon C, G.M.; Casian C, G.A.; Azorin N, J.; Diaz G, J.A.I.; Arreola, M.

    2005-01-01

    The goal of mammography is to provide contrast between a lesion that is possible residing within the breast and normal surrounding tissue. Quality control is essential for maintaining the contrast imaging performance of a mammography system and incorporate tests that are relevant in that they are predictive of future degradation of contrast imaging performance. These tests will also be done at frequency that is high enough to intercept most drifts in quality imaging or performance before they become diagnostically significant. The quality control study has as objective to describe the results of the assessment of quality imaging elements (film optical density, contrast (density difference), uniformity, resolution and noise) of 62 mammography departments without quality control program and comparison these results with a mammography reference department with a quality control program. When comparing the results they allow seeing the clinical utility of to have a quality control program to reduce the errors of mammography interpretation. (Author)

  3. Analytical approaches to quality assurance and quality control in rangeland monitoring data

    Science.gov (United States)

    Producing quality data to support land management decisions is the goal of every rangeland monitoring program. However, the results of quality assurance (QA) and quality control (QC) efforts to improve data quality are rarely reported. The purpose of QA and QC is to prevent and describe non-sampling...

  4. Title IV Quality Control Project, Stage II. Management Option II: Delivery System Quality Improvements.

    Science.gov (United States)

    Advanced Technology, Inc., Reston, VA.

    Stage Two of the Title IV Quality Control Project is an integrated study of quality in five related Federal financial aid programs for postsecondary students. Section 1 of the paper establishes a framework for defining quality improvements, in order to identify the types of changes that would tend to improve quality across all facets of the…

  5. 7 CFR 58.442 - Laboratory and quality control tests.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Laboratory and quality control tests. 58.442 Section... Service 1 Operations and Operating Procedures § 58.442 Laboratory and quality control tests. (a) Chemical... Methods or by other methods giving equivalent results. (b) Weight or volume control. Representative...

  6. Introduction to Quality Control in a Compounding Pharmacy.

    Science.gov (United States)

    Allen, Loyd V

    2016-01-01

    A quality-based program is vital in every compounding pharmacy to ensure that each preparation is compounded properly and is stable for its expected duration of use. This article discusses quality control, quality assurance, continuous quality improvement, and also describes the components of an in-house (in-pharmacy) quality program, as well as the role of outside laboratories. Copyright© by International Journal of Pharmaceutical Compounding, Inc.

  7. Self-mixing laser diode included in scanning microwave microscope to the control of probe nanodisplacement

    Science.gov (United States)

    Usanov, D. A.; Skripal, A. V.; Astakhov, E. I.; Dobdin, S. Y.

    2018-04-01

    The possibilities of self-mixing interferometry for measuring nanodisplacement of a probe included in a near-field scanning microwave microscope have been considered. The features of the formation of a laser interference signal at current modulation of the wavelength of laser radiation have been investigated. Experimental responses of a semiconductor laser system included in scanning microwave microscope to control nanodisplacement of the probe have been demonstrated.To register the nanodisplacement of the probe, it is proposed to use the method of determining the stationary phase of a laser interference signal by low-frequency spectrum of a semiconductor laser. The change of the amplitudes of the spectral components in the spectrum of the interference signal due to creation of the standing wave in the external resonator of the laser self-mixing system has been shown. The form of the interference signal at current modulation of the radiation wavelength was experimentally obtained when the probe moves with a step of 80 nm. The results of measuring nanodisplacements of an electromagnetic translator STANDA 8MVT40-13 have been demonstrated. Deviation of the nanodisplacement of the proposed method does not exceed 15%.

  8. Quality control with R an ISO standards approach

    CERN Document Server

    Cano, Emilio L; Prieto Corcoba, Mariano

    2015-01-01

    Presenting a practitioner's guide to capabilities and best practices of quality control systems using the R programming language, this volume emphasizes accessibility and ease-of-use through detailed explanations of R code as well as standard statistical methodologies. In the interest of reaching the widest possible audience of quality-control professionals and statisticians, examples throughout are structured to simplify complex equations and data structures, and to demonstrate their applications to quality control processes, such as ISO standards. The volume balances its treatment of key aspects of quality control, statistics, and programming in R, making the text accessible to beginners and expert quality control professionals alike. Several appendices serve as useful references for ISO standards and common tasks performed while applying quality control with R.

  9. Quality Control for Expanded Tsetse Production, Sterilization and Field Application

    International Nuclear Information System (INIS)

    2012-07-01

    /IAEA Standard Operating Procedures for Mass rearing Tsetse Flies. Sixteen institutions from thirteen countries in Africa, Europe and Central America were awarded contracts or agreements under the CRP. This publication is a report of the results and outputs of that CRP, including the new and revised quality control tests that resulted from it.

  10. Quality Control for Expanded Tsetse Production, Sterilization and Field Application

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-07-15

    /IAEA Standard Operating Procedures for Mass rearing Tsetse Flies. Sixteen institutions from thirteen countries in Africa, Europe and Central America were awarded contracts or agreements under the CRP. This publication is a report of the results and outputs of that CRP, including the new and revised quality control tests that resulted from it.

  11. [Productivity of doctoral programs in Psychology with Quality Mention in journal articles included in Journal Citation Reports].

    Science.gov (United States)

    Musi-Lechuga, Bertha; Olivas-Ávila, José; Castro, Angel

    2011-08-01

    The main objective of the present study was to classify doctoral programs with Quality Mention in Psychology based on their scientific productivity. For this purpose, articles in the Web of Science published by professors teaching in these doctoral programs were analyzed. In addition, we analyzed scientific journals in which these professors tend to publish more papers and the evolution in the number of papers published until 2009. Results showed that the most productive doctoral program was the Neurosciences program at the University of Oviedo. This program showed a ratio of 40 articles--published in journals included in Journal Citation Reports--by each professor. In contrast, other programs did not reach a ratio of 10 articles per professor. Regarding journals, results showed that 9 out of the 20 most popular journals are Hispanic and a gradual increase in the number of published papers was also observed. Lastly, results and implications for quality assessment are discussed.

  12. 42 CFR 84.256 - Quality control requirements.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Quality control requirements. 84.256 Section 84.256... § 84.256 Quality control requirements. (a) In addition to the construction and performance requirements specified in §§ 84.251, 84.252, 84.253, 84.254, and 84.255, the quality control requirements in paragraphs...

  13. Internal quality control of RIA with Tonks error calculation method

    International Nuclear Information System (INIS)

    Chen Xiaodong

    1996-01-01

    According to the methodology feature of RIA, an internal quality control chart with Tonks error calculation method which is suitable for RIA is designed. The quality control chart defines the value of the allowance error with normal reference range. The method has the simplicity of its performance and directly perceived through the senses. Taking the example of determining T 3 and T 4 , the calculation of allowance error, drawing of quality control chart and the analysis of result are introduced

  14. Quality evaluation of resistivity-controlled silicon crystals

    Science.gov (United States)

    Wang, Jong Hoe

    2006-01-01

    The segregation phenomenon of dopants causes a low production yield of silicon crystal that meets the resistivity tolerance required by device manufacturers. In order to control the macroscopic axial resistivity distribution in bulk crystal growth, numerous studies including continuous Czochralski method and double crucible technique have been studied. The simple B-P codoping method for improving the productivity of p-type silicon single-crystal growth by controlling axial specific resistivity distribution was proposed by Wang [Jpn. J. Appl. Phys. 43 (2004) 4079]. In this work, the quality of Czochralski-grown silicon single crystals with a diameter 200 mm using B-P codoping method was studied from the chemical and structural points of view. It was found that the characteristics of B-P codoped wafers including the oxygen precipitation behavior and the grown-in defects are same as that of conventional B-doped Czochralski crystals.

  15. General Quality Control (QC) Guidelines for SAM Methods

    Science.gov (United States)

    Learn more about quality control guidelines and recommendations for the analysis of samples using the methods listed in EPA's Selected Analytical Methods for Environmental Remediation and Recovery (SAM).

  16. Intra- and Intercellular Quality Control Mechanisms of Mitochondria

    Directory of Open Access Journals (Sweden)

    Yoshimitsu Kiriyama

    2017-12-01

    Full Text Available Mitochondria function to generate ATP and also play important roles in cellular homeostasis, signaling, apoptosis, autophagy, and metabolism. The loss of mitochondrial function results in cell death and various types of diseases. Therefore, quality control of mitochondria via intra- and intercellular pathways is crucial. Intracellular quality control consists of biogenesis, fusion and fission, and degradation of mitochondria in the cell, whereas intercellular quality control involves tunneling nanotubes and extracellular vesicles. In this review, we outline the current knowledge on the intra- and intercellular quality control mechanisms of mitochondria.

  17. Quality control system response to stochastic growth of amyloid fibrils

    DEFF Research Database (Denmark)

    Pigolotti, S.; Lizana, L.; Sneppen, K.

    2013-01-01

    We introduce a stochastic model describing aggregation of misfolded proteins and degradation by the protein quality control system in a single cell. Aggregate growth is contrasted by the cell quality control system, that attacks them at different stages of the growth process, with an efficiency...... that decreases with their size. Model parameters are estimated from experimental data. Two qualitatively different behaviors emerge: a homeostatic state, where the quality control system is stable and aggregates of large sizes are not formed, and an oscillatory state, where the quality control system...

  18. Privacy-preserving smart meter control strategy including energy storage losses

    OpenAIRE

    Avula, Chinni Venkata Ramana R.; Oechtering, Tobias J.; Månsson, Daniel

    2018-01-01

    Privacy-preserving smart meter control strategies proposed in the literature so far make some ideal assumptions such as instantaneous control without delay, lossless energy storage systems etc. In this paper, we present a one-step-ahead predictive control strategy using Bayesian risk to measure and control privacy leakage with an energy storage system. The controller estimates energy state using a three-circuit energy storage model to account for steady-state energy losses. With numerical exp...

  19. The study on quality control of bedside CR examination

    International Nuclear Information System (INIS)

    Yang Xufeng; Luo Xiaomei; Xu Qiaolan; Wu Tengfang; Wen Xingwei

    2007-01-01

    Objective: To study the quality controll of bedside CR examination and improves the imaging quality. Methods: X-ray examination with CR system were performed on 3,300 patients. All CR cassettes were encoded. The imaging plate and cassettes were cleaned regularly. Results: With and without quality control, the percentage of first-rate film was 58.2% and 51%, the second-rate film was 40% and 45.5%, the third-rate film was 1.3% and 2%, respectively. Corxespondingly, the ratio of re-examination decreased from 1.5% to 0.5% after quality control, and imaging quality was stable. Conclusion: The quality control of bedside CR examination can improve the image quality as well as lighten the labor of radiographers. (authors)

  20. Comparison of approaches to Total Quality Management. Including an examination of the Department of Energy`s position on quality management

    Energy Technology Data Exchange (ETDEWEB)

    Bennett, C.T.

    1994-03-01

    This paper presents a comparison of several qualitatively different approaches to Total Quality Management (TQM). The continuum ranges from management approaches that are primarily standards -- with specific guidelines, but few theoretical concepts -- to approaches that are primarily philosophical, with few specific guidelines. The approaches to TQM discussed in this paper include the International Organization for Standardization (ISO) 9000 Standard, the Malcolm Baldrige National Quality Award, Senge`s the Learning Organization, Watkins and Marsick`s approach to organizational learning, Covey`s Seven Habits of Highly Successful People, and Deming`s Fourteen Points for Management. Some of these approaches (Deming and ISO 9000) are then compared to the DOE`s official position on quality management and conduct of operations (DOE Orders 5700.6C and 5480.19). Using a tabular format, it is shown that while 5700.6C (Quality Assurance) maps well to many of the current approaches to TQM, DOE`s principle guide to management Order 5419.80 (Conduct of Operations) has many significant conflicts with some of the modern approaches to continuous quality improvement.

  1. Quality control of diagnostic x-ray units

    International Nuclear Information System (INIS)

    Marinkovic, O.; Milacic, S.; Jovicic, D.; Tanaskovic, I.

    2001-01-01

    The quality control program for diagnostic x-ray units has started at the Institute of Occupational and Radiological Health during 1990. It includes, among other measurements, reproducibility of dose, high voltage and exposure time. Dose reproducibility was less than 5% for 70% of tested x-ray units. The exposure time and high voltage reproducibility were less than 5% in 60% cases. The cassettes with amplifying foils made from components of rare earth are used in 10% of all x-ray departments. It is very important to work as much as it is possible to modernize general infrastructure as the radiological protection of patients would be better. (author)

  2. Quality assurance in a cask fleet parts control system

    International Nuclear Information System (INIS)

    Fernandez, C.; Shappert, L.B.

    1992-01-01

    This paper discusses applicable portions of the eighteen Quality Assurance criteria of Subpart H, 10 CFR 71 which are incorporated into a relational data base system which has been designed to manage the spare parts control system for a fleet of spent nuclear fuel casks. The system includes not only parts in warehouse storage but parts in use in the field plus casks, ancillary equipment, test equipment, support devices, and even personnel. It provides a high degree of assurance that any device for which a condition for certification has expired will be flagged for recertification testing or removal from service well before the critical date

  3. Survey of product quality control of radioactive waste

    International Nuclear Information System (INIS)

    Warnecke, E.

    1989-01-01

    The PTB has developed basic procedures with regard to deriving final storage conditions and product quality control. After this, requirements for radioactive waste are derived via safety analysers, in which information about the radioactive waste, the geological overall situation of the site and the layout of the final storage mine, in particular, are included as basic data. The final storage conditions are only determined with the awarding of the planning decision. Compliance with them can be proved by random sample tests on waste containers or via a qualification and inspection of the conditioning process. (DG) [de

  4. Quality control and biophysical characterisation data of VanSA

    Directory of Open Access Journals (Sweden)

    C.S. Hughes

    2017-10-01

    Full Text Available This data article presents the results from quality control experiments including N-terminal sequencing, SEC-MALS and Mass Spectrometry for purified VanSA used in experiments described in (Hughes et al., 2017 [1]; in addition to ligand interaction measurements and thermal melting curves of VanSA in the presence of screened ligands from circular dichroism measurements as well as UV–vis absorbance spectra for the binding interaction of VanSA in the presence of screened ligands.

  5. Quality control in radioimmunoassay for Argentina, Chile, Paraguay and Uruguay

    International Nuclear Information System (INIS)

    Quiroga, S.

    1984-10-01

    The purpose of this project was the development of an External Quality Control Programme on Radioimmunoassay among laboratories from Argentina and other Latinoamerican countries. The purpose of this programme was to improve the performance of the participating laboratories in order to increase the diagnostic value of patient results. The number of returns of this programme (Buenos Aires I) were compared against those of the previous one (Programme I) (Contract 2737/RB) to determine if the objectives were fulfilled. The preparation of the samples and the evaluation of the results of the first six samples were analyzed in the progress report sent on December 30th, 1983 and were reanalysed including late results

  6. Quality assurance in a cask fleet parts control system

    International Nuclear Information System (INIS)

    Fernandez, C.; McCreery, P.N.; Shappert, L.B.

    1991-01-01

    Applicable portions of the eighteen Quality Assurance criteria of Subpart H, 10 CFR 71 are incorporated into a relational data base system which has been designed to manage the spare parts control system for a fleet of spent nuclear fuel casks. The system includes not only parts in warehouse storage but parts in use in the field plus casks, ancillary equipment, test equipment, support devices, and even personnel. It provides a high degree of assurance that any device for which a condition for certification has expired will be flagged for recertification testing or removal from service well before the critical date

  7. Secondary Control for Voltage Quality Enhancement in Microgrids

    DEFF Research Database (Denmark)

    Savaghebi, Mehdi; Jalilian, Alireza; Vasquez, Juan Carlos

    2012-01-01

    In this paper, a hierarchical control scheme is proposed for enhancement of sensitive load bus (SLB) voltage quality in microgrids. The control structure consists of primary and secondary levels. The primary control level comprises distributed generators (DGs) local controllers. Each of these con......In this paper, a hierarchical control scheme is proposed for enhancement of sensitive load bus (SLB) voltage quality in microgrids. The control structure consists of primary and secondary levels. The primary control level comprises distributed generators (DGs) local controllers. Each...

  8. Teaching Quality Control with Chocolate Chip Cookies

    Science.gov (United States)

    Baker, Ardith

    2014-01-01

    Chocolate chip cookies are used to illustrate the importance and effectiveness of control charts in Statistical Process Control. By counting the number of chocolate chips, creating the spreadsheet, calculating the control limits and graphing the control charts, the student becomes actively engaged in the learning process. In addition, examining…

  9. Design, analysis, and interpretation of field quality-control data for water-sampling projects

    Science.gov (United States)

    Mueller, David K.; Schertz, Terry L.; Martin, Jeffrey D.; Sandstrom, Mark W.

    2015-01-01

    The process of obtaining and analyzing water samples from the environment includes a number of steps that can affect the reported result. The equipment used to collect and filter samples, the bottles used for specific subsamples, any added preservatives, sample storage in the field, and shipment to the laboratory have the potential to affect how accurately samples represent the environment from which they were collected. During the early 1990s, the U.S. Geological Survey implemented policies to include the routine collection of quality-control samples in order to evaluate these effects and to ensure that water-quality data were adequately representing environmental conditions. Since that time, the U.S. Geological Survey Office of Water Quality has provided training in how to design effective field quality-control sampling programs and how to evaluate the resultant quality-control data. This report documents that training material and provides a reference for methods used to analyze quality-control data.

  10. Quality control for some digital fluoroscopy equipment used in Sudan

    International Nuclear Information System (INIS)

    Nayledam, A. I.

    2009-07-01

    The aim of this work was to perform quality control (QC) for six digital fluoroscopy units used for cardiovascular and interventional radiology procedures. Measurement were based on the QC protocol developed in the framework of European Commission (EU) DIMOND111 project. Measurement made included: beam quality (half-value layer, HVL), peak tube voltage (kVp) accuracy, automatic exposure control (Aec) and patient dose in terms of entrance surface air kerma rate plus image intensifier input air kerma rate. Dose measurements were made using Calibrated dose rate meter. Field limitation and source to skin distant measurement in addition to evaluation radiation protection tools for occupation exposure were performed. Image quality was evaluated in terms of spatial resolution and Contrast detail detectability. Patient dose measurements was performed using polymethylmethacrylate (PMMA) patient equivalent phantom whereas image quality was assessed using Haunter Type 53 spatial frequency grating and TO10 contrast detail phantom. The results show that the measured HVL and peak tube voltage were within the recommended limits of 10% in four fluoroscopy units. Entrance surface air kerma rate measured ranged from 6.1 to 250 mGy/min for fluoroscopy units operated in pulsed, continuous and cine mode of operation. These results were obtained using varying thicknesses of PMMA phantom. Most values are in reasonable agreement with internationally established reference levels with exception to one fluoroscopy unit where doses were remarkably high. Field limitation and minimum source to skin distance were well within the recommended limits of 30 cm for all fluoroscopy units. The limiting resolution was ranged from 1.0 to 2.2 Lp /mm for image intensifier field diameters between 7 ad 23 cm. The results of present study can be used as baseline for future quality assurance measurements. (Author)

  11. Control of Bank Consolidated Financial Statements Quality

    OpenAIRE

    Margarita S. Ambarchyan

    2013-01-01

    The author presents the multiple linear regression model of bank consolidated financial statements quality. The article considers six characteristics that can be used to estimate the level of bank consolidated financial statements quality. The multiple linear regression model was developed, using the results of point-based system of consolidated financial statements of thirty European bank and financial groups on the basis of the developed characteristics. The author offers to use the charact...

  12. Quality control of recycled asphaltic concrete : final report.

    Science.gov (United States)

    1982-07-01

    This study examined the variations found in recycled asphaltic concrete mix based upon plant quality control data and verification testing. The data was collected from four recycled hot-mix projects constructed in 1981. All plant control and acceptan...

  13. Quality control of sputum microscopic examinations for acid fast ...

    African Journals Online (AJOL)

    Preferred Customer

    in the Southern Region of Ethiopia, and quality control has been initiated as part of this effort. Objective: To evaluate the ... National Tuberculosis and Leprosy Control Programme. (TLCP) manual for ..... laboratories in Mexico. Int J Tuberc Lung ...

  14. METHODS OF AUTOMATIC QUALITY CONTROL OF AGGLUTINANTSANDS IN FOUNDRY

    Directory of Open Access Journals (Sweden)

    D. M. Kukuj

    2004-01-01

    Full Text Available The article is dedicated to comparative analysis of the well-known methods of automatic quality control of agglutinant sands in process of their preparation and to the problems of automation control of the mix preparation processes.

  15. Managing Air Quality - Multi-Pollutant Planning and Control

    Science.gov (United States)

    Describes how planning controls for multiple pollutants at the same time can save money and time and achieve significant benefits, and how control strategies can address both climate change and air quality.

  16. AUTOMATION OF THE SYSTEM OF INTERNAL LABORATORY QUALITY CONTROL

    Directory of Open Access Journals (Sweden)

    V. Z. Stetsyuk

    2015-05-01

    Full Text Available Quality control system base d on the principles of standardi zation of all phases of laboratory testing and analysis of internal laboratory quality control and external quality assessment. For the detection accuracy of the results of laboratory tests, carried out internally between the laboratory and laboratory quality control. Under internal laboratory quality control we understand measurement results of each analysis in each anal ytical series rendered directly in the lab every day. The purpose of internal laboratory control - identifying and eliminating unacceptable deviations from standard perfor mance test in the laboratory, i.e. identifying and eliminating harmful analytical errors. The solutions to these problems by implementing automated systems - software that allows you to optimize analytical laboratory research stage of the procedure by automatically creating process control charts was shown.

  17. Food and Nutrition Services Quality Control Management Program.

    Science.gov (United States)

    Wimsatt-Fraim, Teresa S.

    A program was conducted to improve the quality of food service through the training of 44 food and nutrition service employees in a 200-bed hospital. A 12-week quality control program was implemented to address four key areas: food temperatures, food accuracy, food quality, and dietary personnel. Learning strategies, emphasizing critical thinking…

  18. Evaluation of quality control in the college of medical radiological sciences, conventional x-ray department

    International Nuclear Information System (INIS)

    Babiker, Esameldeen Mohamed Tom

    2002-02-01

    Quality control in diagnostic radiography aims to ensure continuous production of diagnostic images with optimum quality, using minimum necessary dose to the patients and staff. Therefore an ineffective quality control program can lead to poor quality images that can impair diagnosis, increase operating costs and contribute to unnecessary radiation exposure to both patients and staff. Apply basic quality control program is responsibility of each x-ray facility, and to achieve maximum benefits, all levels of management and technical staff must support and participate in operating the programme. The main parameters to be monitored during the quality control programme include: dose consistency, k Vp accuracy, k Vp variations, exposure timer accuracy, besides checking image receptors, recording system and processing conditions. The aims of this project is to evaluate the quality control in the x-ray department of the college of medical radiologic sciences. The evaluation was an experimental study done by checking the operational status of the radiographic equipment, beside data collection using questionnaires regarding quality control. In the applied experiments the results show that there is a noted variation in the accuracy of k Vp, exposure timer and also in the dose consistency. The obtained results from image receptors and processing system showed noted variations too. The results of the questionnaire and direct interviewing showed other causes of quality degradation such as absence of test tools, the status of the equipment, absence of regular quality control testing, in addition to absence of an organized team to deal with quality. (Author)

  19. Quality control for measurement of soil samples containing 237Np and 241Am as radiotracer

    International Nuclear Information System (INIS)

    Sha Lianmao; Zhang Caihong; Song Hailong; Ren Xiaona; Han Yuhu; Zhang Aiming; Chu Taiwei

    2003-01-01

    This paper reports quality control (QC) for the measurement of soil samples containing 237 Np and 241 Am as radiotracers in migration test of transuranic nuclides. All of the QC were done independently by the QA members of analytical work. It mainly included checking 5%-10% of the total analyzed samples; preparing blank samples, blind replicate sample and spiked samples used as quality control samples to check the quality of analytical work

  20. Research on the Implementation of Technological Measures for Controlling Indoor Environmental Quality in Green Residential Buildings

    Science.gov (United States)

    Wang, Ruozhu; Liu, Pengda; Qian, Yongmei

    2018-02-01

    This paper analyzes the design technology of controlling indoor quality in engineering practice, it is proposed that, in framework system of green residential building design, how to realize the design idea of controlling the indoor environment quality, and the design technology with feasibility, including the sunshine and lighting, indoor air quality and thermal environment, sound insulation and noise reduction measures, etc.. The results of all will provide a good theoretical supportting for the design of green residential building.

  1. Quality control program of multi-leaf collimation based EPID for teams with Rapidarc

    International Nuclear Information System (INIS)

    Pujades Claumarchirant, M. C.; Richart Sancho, J.; Gimeno Olmos, J.; Lliso Valverde, F.; Carmona Mesenguer, V.; Garcia Martinez, M. T.; Palomo Llinares, R.; Ballester Pallares, F.; Perez Calatayud, J.

    2013-01-01

    The objective of this work is to show a collection of different recommendations on the control of quality of collimation multi-leaf system and present the selection of tests based on the electronic imaging device (EPID) portal that have decided to establish in our Center, where in addition to the requirements of quality assurance generic for collimation multi-leaf system quality control methods have been included for RapidArc. (Author)

  2. Comparison of quality control software tools for diffusion tensor imaging.

    Science.gov (United States)

    Liu, Bilan; Zhu, Tong; Zhong, Jianhui

    2015-04-01

    Image quality of diffusion tensor imaging (DTI) is critical for image interpretation, diagnostic accuracy and efficiency. However, DTI is susceptible to numerous detrimental artifacts that may impair the reliability and validity of the obtained data. Although many quality control (QC) software tools are being developed and are widely used and each has its different tradeoffs, there is still no general agreement on an image quality control routine for DTIs, and the practical impact of these tradeoffs is not well studied. An objective comparison that identifies the pros and cons of each of the QC tools will be helpful for the users to make the best choice among tools for specific DTI applications. This study aims to quantitatively compare the effectiveness of three popular QC tools including DTI studio (Johns Hopkins University), DTIprep (University of North Carolina at Chapel Hill, University of Iowa and University of Utah) and TORTOISE (National Institute of Health). Both synthetic and in vivo human brain data were used to quantify adverse effects of major DTI artifacts to tensor calculation as well as the effectiveness of different QC tools in identifying and correcting these artifacts. The technical basis of each tool was discussed, and the ways in which particular techniques affect the output of each of the tools were analyzed. The different functions and I/O formats that three QC tools provide for building a general DTI processing pipeline and integration with other popular image processing tools were also discussed. Copyright © 2015 Elsevier Inc. All rights reserved.

  3. Ior-CEA-1: Labelling, quality control and clinical evaluation

    International Nuclear Information System (INIS)

    Pimentel, G.J.

    1998-01-01

    Within the Co-ordinated Programme on Labelling, Quality Control and Evaluation of Monoclonal Antibodies, the IAEA has made a great effort to expand efficient labelling methods, mainly those with radioisotopes which have been used for radioimmunoscintigraphy. In this sense, more recently 99 Tc m has been mostly employed in the majority of the investigations due to its ideal physical characteristics. Efficient labelling of monoclonal antibodies depends on a number of factors including the method and way of the label incorporation into the protein. During the last years several direct labelling approaches have been developed, which led to attain simple and inexpensive methods for medical practice, as well as safe and stable techniques which bring accurate and good quality images. Accordingly, this paper describes the results obtained during last five years which come from the comparison among different labelling systems, passing through the quality control to test the labelled monoclonal stability and the protein bioreactivity, to continue in the clinical evaluation of ior-CEA-1, as well as the evaluation of other antibodies. Up to now we have evaluated more than 70 patients with the anti-CEA monoclonal antibody (ior-CEA-1), examined in different clinical assays such as: pilot, phase I-II and extensive phase III-IV trials, whose results are encouraging. It confirms that the employed labelling approach was safe and adequate

  4. The process of managerial control in quality improvement initiatives.

    Science.gov (United States)

    Slovensky, D J; Fottler, M D

    1994-11-01

    The fundamental intent of strategic management is to position an organization with in its market to exploit organizational competencies and strengths to gain competitive advantage. Competitive advantage may be achieved through such strategies as low cost, high quality, or unique services or products. For health care organizations accredited by the Joint Commission on Accreditation of Healthcare Organizations, continually improving both processes and outcomes of organizational performance--quality improvement--in all operational areas of the organization is a mandated strategy. Defining and measuring quality and controlling the quality improvement strategy remain problematic. The article discusses the nature and processes of managerial control, some potential measures of quality, and related information needs.

  5. Benthic indicators to use in Ecological Quality classification of Mediterranean soft bottom marine ecosystems, including a new Biotic Index

    Directory of Open Access Journals (Sweden)

    N. SIMBOURA

    2002-12-01

    Full Text Available A general scheme for approaching the objective of Ecological Quality Status (EcoQ classification of zoobenthic marine ecosystems is presented. A system based on soft bottom benthic indicator species and related habitat types is suggested to be used for testing the typological definition of a given water body in the Mediterranean. Benthic indices including the Shannon-Wiener diversity index and the species richness are re-evaluated for use in classification. Ranges of values and of ecological quality categories are given for the diversity and species richness in different habitat types. A new biotic index (BENTIX is proposed based on the relative percentages of three ecological groups of species grouped according to their sensitivity or tolerance to disturbance factors and weighted proportionately to obtain a formula rendering a five step numerical scale of ecological quality classification. Its advantage against former biotic indices lies in the fact that it reduces the number of the ecological groups involved which makes it simpler and easier in its use. The Bentix index proposed is tested and validated with data from Greek and western Mediterranean ecosystems and examples are presented. Indicator species associated with specific habitat types and pollution indicator species, scored according to their degree of tolerance to pollution, are listed in a table. The Bentix index is compared and evaluated against the indices of diversity and species richness for use in classification. The advantages of the BENTIX index as a classification tool for ECoQ include independence from habitat type, sample size and taxonomic effort, high discriminative power and simplicity in its use which make it a robust, simple and effective tool for application in the Mediterranean Sea.

  6. Quality assurance and quality control for Hydro-Quebec's ambient air monitoring networks

    International Nuclear Information System (INIS)

    Lambert, M.; Varfalvy, L.

    1993-01-01

    Hydro Quebec has three ambient air monitoring networks to determine the contribution of some of its thermal plants to ambient air quality. They are located in Becancour (gas turbines), Iles-de-la-Madeleine (diesel), and Tracy (conventional oil-fired). To ensure good quality results and consistency between networks, a quality assurance/quality control program was set up. A description is presented of the ambient air quality monitoring network and the quality assurance/quality control program. A guide has been created for use by the network operators, discussing objectives of the individual network, a complete description of each network, field operation for each model of instrument in use, treatment of data for each data logger in use, global considerations regarding quality assurance and control, and reports. A brief overview is presented of the guide's purpose and contents, focusing on the field operation section and the sulfur dioxide and nitrogen oxide monitors. 6 figs., 1 tab

  7. Implementation of quality assurance and quality control in the Nuclear Analytical Laboratory of the Estonian Radiation Protection Centre

    International Nuclear Information System (INIS)

    Koeoep, T.; Jakobson, E.

    2002-01-01

    The Analytical Laboratory of the Estonian Radiation Protection Centre is in the process of implementing the system of Quality Assurance (QA) and Quality Control (QC) in the framework of the IAEA TC Project RER/2/004/ 'QA/QC of Nuclear Analytical Techniques'. The draft Quality Manual with annexes has been prepared accordingly to the ISO 17025 Guide, documents and other printed material delivered on the seminars of the project. The laboratory supply has been supplemented with necessary equipment for guaranteeing of quality. Proficiency testing included in the project has been performed successfully. (author)

  8. [On-site quality control of acupuncture randomized controlled trial: design of content and checklist of quality control based on PICOST].

    Science.gov (United States)

    Li, Hong-Jiao; He, Li-Yun; Liu, Zhi-Shun; Sun, Ya-Nan; Yan, Shi-Yan; Liu, Jia; Zhao, Ye; Liu, Bao-Yan

    2014-02-01

    To effectively guarantee quality of randomized controlld trial (RCT) of acupuncture and develop reasonable content and checklist of on-site quality control, influencing factors on quality of acupuncture RCT are analyzed and scientificity of quality control content and feasibility of on-site manipulation are put into overall consideration. Based on content and checklist of on-site quality control in National 11th Five-Year Plan Project Optimization of Comprehensive Treatment Plan for TCM in Prevention and Treatment of Serious Disease and Clinical Assessment on Generic Technology and Quality Control Research, it is proposed that on-site quality control of acupuncture RCT should be conducted with PICOST (patient, intervention, comparison, out come, site and time) as core, especially on quality control of interveners' skills and outcome assessment of blinding, and checklist of on-site quality control is developed to provide references for undertaking groups of the project.

  9. Advanced fault ride-through control of DFIG based wind turbines including grid connection via VSC-HVDC

    Energy Technology Data Exchange (ETDEWEB)

    Feltes, Christian

    2012-07-01

    With the growing renewable energy share in the power generation mix it becomes inevitable that also these new generation technologies participate on the provision of grid services to guarantee stable operation of the grid, especially when one considers the decreasing number of conventional power plants in operation as a result of the expansion of wind based generation plants. These so-called ancillary services include frequency / active power control, voltage / reactive power control and fault ride-through (FRT) with fast voltage control and are stipulated in modern grid codes. In the context of this thesis advanced control algorithms have been developed for wind turbines based on doubly-fed induction generator (DFIG) to allow safe FRT during symmetrical and unsymmetrical faults. This covers the control for conventional AC grid connection as well as for the connection through voltage source converter (VSC) based high voltage direct current transmission (HVDC). Currently, the DFIG is the most used generator technology in modem wind turbines, since it combines a relatively simple slip-ring induction machine with a frequency converter rated to only approx. 30% of the total power. This makes the DFIG a cost-effective concept, which offers a variable speed range and a high degree of flexibility in control. However, due to the direct coupling of the generator stator circuit to the grid, grid faults are a special challenge for the frequency converter, its protection circuits and control algorithms. As base for the detailed evaluation of the impact of grid faults to the DFIG, this thesis contains the analytical derivation of the DFIG short circuit currents under consideration of frequency converter control. The DFIG concept presented in this thesis makes use of a DC chopper in the frequency converter, which allows safe FRT with grid voltage support through both converter sides. The developed control contains a new algorithm for a clear separation and control of positive

  10. Quality control of the Korle Bu rectilinear scanner

    International Nuclear Information System (INIS)

    Feli, S.K.; Tetteh, G.K.

    1993-01-01

    The attainment of high standards of efficiency and reliability in the practice of nuclear medicine requires an appropriate quality assurance programme. Routine monitoring of nuclear medicine instruments, using test procedures that provide check of the quality and reproducibility of instrument performance, aims at giving the user the confidence in the data collected and in updating the performance of the instrument. Quality control testing schedule for rectilinear scanners include weekly density calibration and monthly performance contrast enhancement and collimator evaluation. Discussion in this work is restricted to collimator evaluation which is required to be performed at the initial stages of installation as acceptance reference. However unlike the density, calibration and contrast enhancement, there is no documented work on this for the M800 Scintikart Scanner - a Hungarian Gamma Muvek system belonging to the Korle Bu Hospital, Accra. Tests of linearity of energy, relative sensitivity and resolution including energy and spatial resolutions were conducted in respect of collimator evaluation. In the linearity test it was ascertained that a nonlinear relationship exists between the centre of the window setting and the energy of the photopeak. The spectrometer was calibrated independently for each radionuclide and the position of Tc-99m obtained at 0.45 MeV on the MeV scale. In addition, the F272a13 Collimator offered a better resolution than the routinely used F272a136 collimator which has the highest sensitivity. (author). 10 refs.; 1 tab.; 10 figs

  11. Intergrated approach to quality control procedures of radioisotopes and radiopharmaceuticals

    International Nuclear Information System (INIS)

    Rohani Mohamad

    1986-01-01

    Various aspects of the quality control procedures for radioisotopes and radiopharmaceuticals have been discussed. The paper high lighted those procedures that are important in ensuring the efficacy of the product. It also gives a general idea of the various procedures that are actually carried out by the Quality Control Section. (A.J.)

  12. Status and future trends of Analytical Quality Control Services

    International Nuclear Information System (INIS)

    LaBrecque, J.J.; Schelenz, R.; Hardy, E.P.

    1987-07-01

    This report reviews the present Analytical Quality Control Services (AQCS) programme components in the light of the needs of IAEA Member States for analytical reference materials and intercomparisons, provides guidelines for the direction which the programme should take in the future and identifies the type of Analytical Quality Control Services most urgently required by the Member States

  13. Safety of timber : An analysis of quality control options

    NARCIS (Netherlands)

    Kovryga, A.; Stapel, P.; Van de Kuilen, J.W.G.

    2014-01-01

    The quality assurance of timber properties is important for the safety of timber structures. In the current study, the quality control options of timber are analysed under the prism of the different growth regions. Therefore, these options - machine and output control - are simulated in accordance

  14. Chemical and physical quality control of the HIPPURAN-131I

    International Nuclear Information System (INIS)

    Morin Zorilla, J.; Olive, E.; Isaac, M.; Cruz, J.

    1989-01-01

    Some physico-chemical methods for analytical control of Hippuran- 131 I are compared. The most convenient to applicate in hospitals and in more specialized quality control laboratories are recommended. The quality of Hippuran- 131 I produced by ISOTOP (USSR) is also evaluated. The product met the requirement of the International Pharmacopeia

  15. Internal quality control in serological tests for syphilis.

    OpenAIRE

    Wasley, G D

    1985-01-01

    The importance of syphilis serological tests demands that laboratory reports are reliable. Internal quality control applied to the organisation of a syphilis serology service improves laboratory bench performance and reporting. Described here are internal quality control procedures of a department that serves a genitourinary medicine clinic and conducts 70 000 tests a year to investigate for syphilis.

  16. Application of improved quality control technology to pressure vessels

    International Nuclear Information System (INIS)

    Kriedt, F.

    1985-01-01

    Within the last decade, ASME Boiler and Pressure Vessel Code Section VIII-1 instituted requirements for a formal written quality control system. The results, good and bad, of this requirement are discussed. The effects are far reaching from a national economic standpoint. Quality control technology has improved. These improvements are discussed and compared to existing requirements of the CODE. Recommended improvements are suggested

  17. Quality control of geological voxel models using experts' gaze

    NARCIS (Netherlands)

    Maanen, P.P. van; Busschers, F.S.; Brouwer, A.M.; Meulen, M.J. van der; Erp, J.B.F. van

    2015-01-01

    Due to an expected increase in geological voxel model data-flow and user demands, the development of improved quality control for such models is crucial. This study explores the potential of a new type of quality control that improves the detection of errors by just using gaze behavior of 12

  18. Quality Control of Geological Voxel Models using Experts' Gaze

    NARCIS (Netherlands)

    van Maanen, Peter-Paul; Busschers, Freek S.; Brouwer, Anne-Marie; van der Meulendijk, Michiel J.; van Erp, Johannes Bernardus Fransiscus

    Due to an expected increase in geological voxel model data-flow and user demands, the development of improved quality control for such models is crucial. This study explores the potential of a new type of quality control that improves the detection of errors by just using gaze behavior of 12

  19. Quality control of nuclear fuels - technical and economic aspects

    International Nuclear Information System (INIS)

    Strasser, A.A.

    1982-01-01

    The qualification and resolution of questions relating to the cost benefit of quality control are based on the interaction of a broad range of technologies and economics. This paper discusses examples of current areas of interest in quality control, and their relationship to the fuel cycle costs. (orig.)

  20. Design an Indoor Air Quality Controller Based on LPC2478

    Directory of Open Access Journals (Sweden)

    Shi Shuheng

    2014-07-01

    Full Text Available Indoor air quality is very important to our lives, because we spend most of our time indoor. In order to improve the air quality of indoor, this paper designs an indoor environment quality monitoring and controlling system based on ARM microcontroller LPC2478. It will do a real-time monitoring work for detecting the indoor environmental factors and comprehensively evaluate its air quality level. While the indoor air quality status is "poor", this intelligent system will automatically start the heat exchange ventilator for indoor environmental quality improvement. The results compared to traditional natural ventilation method show the better performance of proposed system.

  1. Including model uncertainty in the model predictive control with output feedback

    Directory of Open Access Journals (Sweden)

    Rodrigues M.A.

    2002-01-01

    Full Text Available This paper addresses the development of an efficient numerical output feedback robust model predictive controller for open-loop stable systems. Stability of the closed loop is guaranteed by using an infinite horizon predictive controller and a stable state observer. The performance and the computational burden of this approach are compared to a robust predictive controller from the literature. The case used for this study is based on an industrial gasoline debutanizer column.

  2. Dose calibrator user and quality control guide

    International Nuclear Information System (INIS)

    Blanchis, Philippe; Amiot, Marie-Noelle; Moune, Muriel; Bellanger, Anne-Christine; Chauvenet, Bruno; Verdeau, Eric; Gardin, Isabelle; Martineau, Antoine; Ricard, Marcel; Caselles, Olivier; Guilhem, Marie-Therese; Hapdey, Sebastien; Lisbona, Albert; Bonnot-Lours, Sophie; Dumont, Agnes; Lemercier, Valerie; Rizzo-Padoin, Nathalie

    2006-06-01

    This document is a practical guide for the use and control of dose calibrators which are instruments used for radioactivity measurements. After a recall of the calibrator operation principle, the authors describe all the operations performed on this apparatus all along its lifetime: controls to be performed for device acceptance, aspects to be addressed during installation, controls to be performed before any use, daily controls, more detailed controls, and operations to be performed for maintenance, in case of dysfunctions or for re-calibration

  3. 75 FR 24748 - Johnson Controls, Inc., Automotive Experience Division, Including Workers Whose Unemployment...

    Science.gov (United States)

    2010-05-05

    ...., Automotive Experience Division, Including Workers Whose Unemployment Insurance (UI) Wages Are Paid Through... unemployment insurance (UI) tax account, under the name Hoover Universal. Accordingly, the Department is... Division, including workers whose unemployment insurance (UI) wages are paid through Hoover Universal...

  4. Evaluation of plant-wide WWTP control strategies including the effects of filamentous bulking sludge

    DEFF Research Database (Denmark)

    Flores Alsina, Xavier; Comas, J.S.; Rodríguez Roda, I.

    2009-01-01

    The main objective of this paper is to evaluate the effect of filamentous bulking sludge on the predicted performance of simulated plant-wide WWTP control strategies. First, as a reference case, several control strategies are implemented, simulated and evaluated using the IWA Benchmark Simulation...

  5. Practical experience in the application of quality control in water-reactor fuel fabrication

    International Nuclear Information System (INIS)

    Vollath, D.

    1984-07-01

    Highly industrialized countries have gained vast experience in manufacturing water reactor fuel. Manufacturing is followed by a stringent system of quality assurance and quality control. The Seminar on Practical Experience in the Application of Quality Control in Water-Reactor Fuel Fabrication provided a forum for an exchange of information on methods and systems of quality assurance and quality control for reactor fuel. In addition, many developing countries which have started or intend to set up a nuclear fuel industry are interested in the application of quality assurance and quality control. This meeting has been preceded by two different series of conferences: the IAEA meetings 1976 in Oslo, 1978 in Prague and 1979 in Buenos Aires, and the Karlsruhe meetings on Characterization and Quality Control of Nuclear Fuel held in 1978 and 1981. Quality control and quality assurance has many different facets. Unlike the purely technical aspects, covered by the Karlsruhe conference series, the IAEA meetings always relate to a wider field of topics. They include governmental regulations and codes for practical quality assurance. This volume contains the papers presented at the seminar and a record of the discussions. (orig.)

  6. Quality control of thermoluminesce personal dose monitoring

    International Nuclear Information System (INIS)

    Shang Aiguo; He Wenchang; Zhao Fengtao

    2006-01-01

    In order to evaluate the influence factor to thermoluminesce personal dose monitoring result, the every question that can appear based on the fact was analyzed. The results show that the detector, annealing, measuring process can influence the monitoring result. It gives some measures to enhance monitoring quality. (authors)

  7. Quality Control Specialist | Center for Cancer Research

    Science.gov (United States)

    Within the Leidos Biomedical Research Inc.’s Clinical Research Directorate, the Clinical Monitoring Research Program (CMRP) provides high-quality comprehensive and strategic operational support to the high-profile domestic and international clinical research initiatives of the National Cancer Institute (NCI), National Institute of Allergy and Infectious Diseases (NIAID),

  8. Quality Assurance Program Plan for FFTF effluent controls. Revision 1

    International Nuclear Information System (INIS)

    Seamans, J.A.

    1995-01-01

    This Quality Assurance Program Plan is specific to environmental related activities within the FFTF Property Protected Area. The activities include effluent monitoring and Low Level Waste Certification

  9. Digital quality control of the camera computer interface

    International Nuclear Information System (INIS)

    Todd-Pokropek, A.

    1983-01-01

    A brief description is given of how the gamma camera-computer interface works and what kind of errors can occur. Quality control tests of the interface are then described which include 1) tests of static performance e.g. uniformity, linearity, 2) tests of dynamic performance e.g. basic timing, interface count-rate, system count-rate, 3) tests of special functions e.g. gated acquisition, 4) tests of the gamma camera head, and 5) tests of the computer software. The tests described are mainly acceptance and routine tests. Many of the tests discussed are those recommended by an IAEA Advisory Group for inclusion in the IAEA control schedules for nuclear medicine instrumentation. (U.K.)

  10. Quality assurance in education: The role of ICT and quality control ...

    African Journals Online (AJOL)

    Quality assurance in education is perceived in this paper to be a product of the impact of information and communication technologies as well as the statutory control measures especially in tertiary institutions in Nigeria. The paper reviews the concept of quality and quality assurance and their general application to ...

  11. How to set up and manage quality control and quality assurance

    NARCIS (Netherlands)

    Visschedijk, M.; Hendriks, R.; Nuyts, K.

    2005-01-01

    This document provides a general introduction to clarify the differences between quality control (QC) and quality assurance (QA). In addition it serves as a starting point for implementing a quality system approach within an organization. The paper offers practical guidance to the implementation of

  12. A quality control atlas for scintillation camera systems

    International Nuclear Information System (INIS)

    Busemann Sokole, E.; Graham, L.S.; Todd-Pokropek, A.; Wegst, A.; Robilotta, C.C.

    2002-01-01

    Full text: The accurate interpretation of quality control and clinical nuclear medicine image data is coupled to an understanding of image patterns and quantitative results. Understanding is gained by learning from different examples, and knowledge of underlying principles of image production. An Atlas of examples has been created to assist with interpreting quality control tests and recognizing artifacts in clinical examples. The project was initiated and supported by the International Atomic Energy Agency (IAEA). The Atlas was developed and written by Busemann Sokole from image examples submitted from nuclear medicine users from around the world. The descriptive text was written in a consistent format to accompany each image or image set. Each example in the atlas finally consisted of the images; a brief description of the data acquisition, radionuclide/radiopharmaceutical, specific circumstances under which the image was produced; results describing the images and subsequent conclusions; comments, where appropriate, giving guidelines for follow-up strategies and trouble shooting; and occasional literature references. Hardcopy images required digitizing into JPEG format for inclusion into a digital document. Where possible, an example was contained on one page. The atlas was reviewed by an international group of experts. A total of about 250 examples were compiled into 6 sections: planar, SPECT, whole body, camera/computer interface, environment/radioactivity, and display/hardcopy. Subtle loss of image quality may be difficult to detect. SPECT examples, therefore, include simulations demonstrating effects of deterioration in camera performance (e.g. center-of-rotation offset, non-uniformity) or suboptimal clinical performance. The atlas includes normal results, results from poor adjustment of the camera system, poor results obtained at acceptance testing, artifacts due to system malfunction, and artifacts due to environmental situations. Some image patterns are

  13. Quality Control in diagnostic radiology according to national regulations

    International Nuclear Information System (INIS)

    Domienik, J.; Chruscielewski, W.; Jankowski, J.

    2006-01-01

    The aim of the paper is to review the main aspects of quality control of radiological devices according to the current national regulations. Explanation of the physical principles of image formation by different test phantoms used to measure focal spot sizes is presented in appendix. The obligation for quality assurance (QA) for all X-ray systems which follows European standards was enforced in updated '' Atomic Law Act '' of 29 November 2000 . This document is the main regulatory act which establishes the basic safety standards for radiation protection in Poland. The main modifications introduced by this new Act concerned the issue of radiation protection of individuals undergoing medical examinations with the use of ionizing radiation which is regulated by EC Directive 97/43 Euratom. According to this Directive quality assurance programmes, including quality control measures need to be implemented by the holder of the radiological installation. Therefore, in the above Act the Minister of Health has been obligated to impose specific regulations describing the way of implementation of general principles laid down in the Directive. Some of these regulations, like those concerning QC tests and tolerances, have already been mentioned in the document titled '' On the conditions for safe application of ionizing radiation in medicine ''. For example, the QC program in radiography is being considered; the obligatory tests- acceptance, routine and annual- are discussed and specific procedures are being indicated. The main idea of the document '' On the conditions for safe application of ionizing radiation in medicine '' which concerns radiation protection of patients and staff against ionizing radiation used in medicine is to implement the surveillance of all X-ray systems in form of acceptance tests followed by internal tests (routine and annual) performed in accordance with European standards. (author)

  14. Implementation of Quality Control Protocol in Mammography: A Serbian Experience

    International Nuclear Information System (INIS)

    Ciraj Bjelac, O.; Kosutic, D.; Arandjic, D.; Kovacevic, M.

    2008-01-01

    Mammography is method of choice for early detection of breast cancer. In Serbia, mammography is performed only clinically, although there is a long term plan to introduce mammography as screening method. Currently there are 60 mammography units in practice in Serbia, resulting with 70 000 mammographies annually. The purpose of this paper is preliminary evaluation of the mammography practice in Serbia, having in mind the annual number of examinations and fact that part of examination is performed on women without any clinical signs. For pilot implementation of Quality Control (QC) protocol in mammography, five hospitals with highest workload have been selected, representing the typical mammography practice in Serbia. Developed QC protocol, based on European guidelines for quality assurance in breast cancer screening and diagnosis, actual practice and resources, includes equipment testing and maintenance, staff training and QC management and allocation of responsibilities. Subsequently, it should be applied on the national scale. The survey demonstrated considerable variations in technical parameters that affect image quality and patients doses. Mean glandular doses ranged from 0.12 to 2.8 mGy, while reference optical density ranged from 1.2 to 2.8. Main problems were associated with film processing, viewing conditions and optical density control. The preliminary survey of mammography practice highlighted the need for optimization of radiation protection and training of operating staff, although the survey itself was very valuable learning process for all participants. Furthermore, systematic implementation of QC protocol should provide reliable performance of mammography units and maintain satisfactory image quality and keep patient doses as low as reasonably practical.(author)

  15. QUALITY CONTROL IN PRECAST PRODUCTION A case study on Tunnel Segment Manufacture

    Directory of Open Access Journals (Sweden)

    Yee Weng Cheong

    2005-01-01

    Full Text Available Quality control forms an integral part of precast production. An efficient quality system is most critical in the mass production of precast components in any project. In this study, the quality control system implemented in a precast factory is discussed. The precast factory is set up for the manufacture of large quantity of tunnel segments under a contract. Processes in the precast manufacture are discussed with respect to the control procedures in the quality inspection plan. The standard tests involved, roles of inspectors and corrective actions on-site are highlighted. Critical issues pertaining to the productivity and quality of precast production are reviewed. These include the quality of staff and maintenance, which could potentially affect the efficiency of the quality system. Some considerations should also be given to improve the workflow and productivity of the plant.

  16. Adaptive sensorless field oriented control of PM motors including zero speed

    DEFF Research Database (Denmark)

    Rasmussen, Henrik; Vadstrup, P.; Børsting, H.

    2004-01-01

    This paper presents a simple control method for controlling permanent magnet synchronous motors (PMSM) in a wide speed range without a shaft sensor. An adaptive observer is used for estimation of the rotor position and speed of a permanent magnet synchronous motors (PMSM). The observer compensates...... for voltage offsets and permanent magnet strength variations. The adaption structure for estimating the strength of the permanent magnet is determined from a Lyapunov stability proof. The control method is made robust at zero and low speed by changing the direct vector current component to a value different...... from zero. In order to verify the applicability of the method the controller has been implemented and tested on a 800 W motor....

  17. Nuclear waste glass melter design including the power and control systems

    International Nuclear Information System (INIS)

    Chapman, C.C.

    1982-01-01

    An energy balance of a joule-heated nuclear waste glass melter is used to discuss the problems in the design of the melter geometry and in the specifications of the power and control systems. The relationships between geometry, electrode current density, production rate, load voltage, and load power are presented graphically. The influence of liquid feeding on the surface of the glass and the variability of nuclear waste glass on the design and control during operation is discussed. 10 refs

  18. Evaluation and Quality Control for the Copernicus Seasonal Forecast Systems

    Science.gov (United States)

    Manubens, N.; Hunter, A.; Bedia, J.; Bretonnière, P. A.; Bhend, J.; Doblas-Reyes, F. J.

    2017-12-01

    The EU funded Copernicus Climate Change Service (C3S) will provide authoritative information about past, current and future climate for a wide range of users, from climate scientists to stakeholders from a wide range of sectors including insurance, energy or transport. It has been recognized that providing information about the products' quality and provenance is paramount to establish trust in the service and allow users to make best use of the available information. This presentation outlines the work being conducted within the Quality Assurance for Multi-model Seasonal Forecast Products project (QA4Seas). The aim of QA4Seas is to develop a strategy for the evaluation and quality control (EQC) of the multi-model seasonal forecasts provided by C3S. First, we present the set of guidelines the data providers must comply with, ensuring the data is fully traceable and harmonized across data sets. Second, we discuss the ongoing work on defining a provenance and metadata model that is able to encode such information, and that can be extended to describe the steps followed to obtain the final verification products such as maps and time series of forecast quality measures. The metadata model is based on the Resource Description Framework W3C standard, being thus extensible and reusable. It benefits from widely adopted vocabularies to describe data provenance and workflows, as well as from expert consensus and community-support for the development of the verification and downscaling specific ontologies. Third, we describe the open source software being developed to generate fully reproducible and certifiable seasonal forecast products, which also attaches provenance and metadata information to the verification measures and enables the user to visually inspect the quality of the C3S products. QA4Seas is seeking collaboration with similar initiatives, as well as extending the discussion to interested parties outside the C3S community to share experiences and establish global

  19. Quality Management of CERN Vacuum Controls

    CERN Document Server

    Antoniotti, F; Fortescue-Beck, E; Gama, J; Gomes, P; Le Roux, P; Pereira, H F; Pigny, G

    2014-01-01

    The vacuum controls Section (TE-VSC-ICM) is in charge of the monitoring, maintenance and consolidation of the control systems of all accelerators and detectors in CERN; this represents 6 000 instruments distributed along 128 km of vacuum chambers, often of heterogeneous architectures and of diverse

  20. PROCESS VARIABILITY REDUCTION THROUGH STATISTICAL PROCESS CONTROL FOR QUALITY IMPROVEMENT

    Directory of Open Access Journals (Sweden)

    B.P. Mahesh

    2010-09-01

    Full Text Available Quality has become one of the most important customer decision factors in the selection among the competing product and services. Consequently, understanding and improving quality is a key factor leading to business success, growth and an enhanced competitive position. Hence quality improvement program should be an integral part of the overall business strategy. According to TQM, the effective way to improve the Quality of the product or service is to improve the process used to build the product. Hence, TQM focuses on process, rather than results as the results are driven by the processes. Many techniques are available for quality improvement. Statistical Process Control (SPC is one such TQM technique which is widely accepted for analyzing quality problems and improving the performance of the production process. This article illustrates the step by step procedure adopted at a soap manufacturing company to improve the Quality by reducing process variability using Statistical Process Control.

  1. Water quality control device and water quality control method for reactor primary coolant system

    International Nuclear Information System (INIS)

    Wada, Yoichi; Ibe, Eishi; Watanabe, Atsushi.

    1995-01-01

    The present invention is suitable for preventing defects due to corrosion of structural materials in a primary coolant system of a BWR type reactor. Namely, a concentration measuring means measures the concentration of oxidative ingredients contained in a reactor water. A reducing electrode is disposed along a reactor water flow channel in the primary coolant system and reduces the oxidative ingredients. A reducing counter electrode is disposed along the reactor water flow channel in the primary coolant system, and electrically connected to the reducing electrode. The reactor structural materials are used as a reference electrode providing a reference potential to the reducing electrode and the reducing counter electrode. A potential control means controls the potential of the reducing electrode relative to the reference potential based on the signals from the concentration measuring means. A stable reference potential in a region where an effective oxygen concentration is stable can be obtained irrespective of the change of operation conditions by using the reactor structural materials disposed to a boiling region in the reactor core as a reference electrode. As a result, the water quality can be controlled at high accuracy. (I.S.)

  2. NIF Projects Controls and Information Systems Software Quality Assurance Plan

    Energy Technology Data Exchange (ETDEWEB)

    Fishler, B

    2011-03-18

    Quality achievement for the National Ignition Facility (NIF) and the National Ignition Campaign (NIC) is the responsibility of the NIF Projects line organization as described in the NIF and Photon Science Directorate Quality Assurance Plan (NIF QA Plan). This Software Quality Assurance Plan (SQAP) is subordinate to the NIF QA Plan and establishes quality assurance (QA) activities for the software subsystems within Controls and Information Systems (CIS). This SQAP implements an activity level software quality assurance plan for NIF Projects as required by the LLNL Institutional Software Quality Assurance Program (ISQAP). Planned QA activities help achieve, assess, and maintain appropriate quality of software developed and/or acquired for control systems, shot data systems, laser performance modeling systems, business applications, industrial control and safety systems, and information technology systems. The objective of this SQAP is to ensure that appropriate controls are developed and implemented for management planning, work execution, and quality assessment of the CIS organization's software activities. The CIS line organization places special QA emphasis on rigorous configuration control, change management, testing, and issue tracking to help achieve its quality goals.

  3. NIF Projects Controls and Information Systems Software Quality Assurance Plan

    International Nuclear Information System (INIS)

    Fishler, B.

    2011-01-01

    Quality achievement for the National Ignition Facility (NIF) and the National Ignition Campaign (NIC) is the responsibility of the NIF Projects line organization as described in the NIF and Photon Science Directorate Quality Assurance Plan (NIF QA Plan). This Software Quality Assurance Plan (SQAP) is subordinate to the NIF QA Plan and establishes quality assurance (QA) activities for the software subsystems within Controls and Information Systems (CIS). This SQAP implements an activity level software quality assurance plan for NIF Projects as required by the LLNL Institutional Software Quality Assurance Program (ISQAP). Planned QA activities help achieve, assess, and maintain appropriate quality of software developed and/or acquired for control systems, shot data systems, laser performance modeling systems, business applications, industrial control and safety systems, and information technology systems. The objective of this SQAP is to ensure that appropriate controls are developed and implemented for management planning, work execution, and quality assessment of the CIS organization's software activities. The CIS line organization places special QA emphasis on rigorous configuration control, change management, testing, and issue tracking to help achieve its quality goals.

  4. Justification and quality control in radiodiagnostics

    International Nuclear Information System (INIS)

    Dalen, A. van

    1989-01-01

    The role of the radiodiagnostician in justification of x-ray examination is discussed. Under the final responsibility of the radio-diagnostician the more common examinations are performed by laboratory assistants. A justification judgement before by the radio-diagnostician does not take place. In case of complicated examinations often previous consultation between radio-diagnostician and clinician is necessary. The fast development of new techniques like CT, echography and MRI has as result that the modern radio-diagnostician develops more and more into a imaging-specialist. In the consultation with the clinician he advises about the optimal diagnostics for a certain patient, taking optimally into account the risks of x-radiation. The justifying role of the radio-diagnostician depends further upon the relation with the requiring physician. In general the inter-collegial consultation is assumed to be sufficient within the hospitals, however the feedback to general practitioners seems to be improvable in some cases. With regard to quality assurance it is remarked that the quality of the examination may not be endangered by a too strong emphasis upon radiation reduction. Aspects like education level, protocol learning, dose limits, degressive tariffs, information-transfer, radiation passport, analysis between 'blue' ton, centralization of x-ray examination and quality of apparatus, are discussed. From the Government primarily a constraint setting policy is expected, in which rule-giving with respect to quality of education and apparatus is highly important. A stimulation of inter-collegial consulting may be expected, in particular in financial sense. A permission policy has to be managed, which ensures centralization of apparatus and centrally performance of x-ray examination as much as possible. Finally warning is given for the effects of excessive fear for radiation which causes refraining of medical necessary examination. The various risk have to be weighed up

  5. Statistical process control: An approach to quality assurance in the production of vitrified nuclear waste

    International Nuclear Information System (INIS)

    Pulsipher, B.A.; Kuhn, W.L.

    1987-01-01

    Current planning for liquid high-level nuclear wastes existing in the United States includes processing in a liquid-fed ceramic melter to incorporate it into a high-quality glass, and placement in a deep geologic repository. The nuclear waste vitrification process requires assurance of a quality product with little or no final inspection. Statistical process control (SPC) is a quantitative approach to one quality assurance aspect of vitrified nuclear waste. This method for monitoring and controlling a process in the presence of uncertainties provides a statistical basis for decisions concerning product quality improvement. Statistical process control is shown to be a feasible and beneficial tool to help the waste glass producers demonstrate that the vitrification process can be controlled sufficiently to produce an acceptable product. This quantitative aspect of quality assurance could be an effective means of establishing confidence in the claims to a quality product

  6. Statistical process control: An approach to quality assurance in the production of vitrified nuclear waste

    International Nuclear Information System (INIS)

    Pulsipher, B.A.; Kuhn, W.L.

    1987-02-01

    Current planning for liquid high-level nuclear wastes existing in the US includes processing in a liquid-fed ceramic melter to incorporate it into a high-quality glass, and placement in a deep geologic repository. The nuclear waste vitrification process requires assurance of a quality product with little or no final inspection. Statistical process control (SPC) is a quantitative approach to one quality assurance aspect of vitrified nuclear waste. This method for monitoring and controlling a process in the presence of uncertainties provides a statistical basis for decisions concerning product quality improvement. Statistical process control is shown to be a feasible and beneficial tool to help the waste glass producers demonstrate that the vitrification process can be controlled sufficiently to produce an acceptable product. This quantitative aspect of quality assurance could be an effective means of establishing confidence in the claims to a quality product. 2 refs., 4 figs

  7. Some observations about quality control tests of Spect

    International Nuclear Information System (INIS)

    Robilotta, C.C.; Rebelo, M.F.S.; Oliveira, M.A.

    1987-01-01

    Some observations about quality control tests done in the tomographic system of Heart Institute are described. Among the tests, the traditional test of quality control with scintillation camera and the specific test for tomography systems are induced. The traditional tests are essential, but not sufficient for evaluating the Spect equipment and the specific tests have been effectuated in controlled conditions. (C.G.C.) [pt

  8. Quality Control of Mega Voltage Portal Imaging System

    International Nuclear Information System (INIS)

    Diklic, A.; Dundara Debeljuh, D.; Jurkovic, S.; Smilovic Radojcic, D.; Svabic Kolacio; Kasabasic, M.; Faj, D.

    2013-01-01

    The Electronic Portal Imaging Device (EPID) is a system used to verify either the correct positioning of the patient during radiotherapy treatment or the linear accelerator beam parameters. The correct position of the patient corresponds to the position at which the patient was scanned at the CT simulator and according to which the therapy plan was made and optimized. Regarding this, besides the advanced treatment planning system and optimized treatment planning techniques, the day-to-day reproduction of simulated conditions is of great importance for the treatment outcome. Therefore, to verify the patient set-up portal imaging should be applied prior to the first treatment session and repeated according to treatment prescriptions during the treatment. In order to achieve full functionality and precision of the EPID, it must be included in radiotherapy Quality Control (QC) programme. The QC of the Mega Voltage portal imaging system was separated in two parts. In the first, the QC of the detector parameters should be performed. For this purpose, the FC2 and QC3 phantoms should be used, along with the Portal Image Processing System program (PIPSpro) package for data analysis. The second part of the QC of the linear accelerator's portal imaging system should include the QC of the CBCT. In this part a set of predefined manufacturer's tests using two different phantoms, one for the geometry calibration and the other for the image quality evaluation, should be performed. Also, the treatment conditions should be simulated using anthropomorphic phantoms and dose distributions for particular EPID protocols should be measured. Procedures for quality control of the portal imaging system developed and implemented at University Hospital Rijeka are presented in this paper.(author)

  9. Effect of quality control implementation on image quality of radiographic films and irradiation doses to patients

    International Nuclear Information System (INIS)

    Cheng Yuxi; Zhou Qipu; Ge Lijuan; Hou Changsong; Qi Xuesong; Yue Baorong; Wang Zuoling; Wei Kedao

    1999-01-01

    Objective: To study the changes in the image quality of radiographic films and the irradiation doses to patients after quality control (QC) implementation. Methods: The entrance surface doses (ESD) to patients measured with TLD and the image quality of radiographic films were evaluated on the basis of CEC image quality criteria. Results: The ESD to patients were significantly reduced after QC implementation (P 0.05), but the post-QC image quality was significantly improved in chest PA, lumbar spine AP and pelvis AP(P0.01 or P<0.05). Conclusion: Significantly reduced irradiation dose with improved image quality can be obtained by QC implementation

  10. Management Model for efficient quality control in new buildings

    Directory of Open Access Journals (Sweden)

    C. E. Rodríguez-Jiménez

    2017-09-01

    Full Text Available The management of the quality control of each building process is usually set up in Spain from different levels of demand. This work tries to obtain a model of reference, to compare the quality control of the building process of a specific product (building, and to be able to evaluate its warranty level. In the quest of this purpose, we take credit of specialized sources and 153 real cases of Quality Control were carefully revised using a multi-judgment method. Applying different techniques to get a specific valuation (impartial of the input parameters through Delphi’s method (17 experts query, whose matrix treatment with the Fuzzy-QFD tool condenses numerical references through a weighted distribution of the selected functions and their corresponding conditioning factors. The model thus obtained (M153 is useful in order to have a quality control reference to meet the expectations of the quality.

  11. Future arrangements for Great Britain's gas quality specifications. Government Response (including Summary of Responses) to consultation on future arrangements for Great Britain's gas quality specifications

    International Nuclear Information System (INIS)

    2007-01-01

    Last year the Government consulted on GB's future gas quality specifications. The background is that some streams of imported gases have an energy content that exceeds the upper limit specified in GB's current gas quality regulations. The policy issue was whether to stick with the current regulated specifications, but at the cost of having to process imported gas to bring it within those specifications; or, at some time after 2020, to adjust those specifications, but at the cost of having to check (and potentially change) approximately 45m domestic gas appliances in 22m households, to ensure that they are capable of burning the high energy gas safely (and with a residual safety risk that some appliances are missed). The Consultation Document sought views on the proposal (backed up by the Partial Regulatory Impact Assessment) to adopt the 'no change' option. In the light of the responses, this is what the Government now proposes. The associated Impact Assessment estimates the total net benefit of the 'no change' option at UK Pounds 1.5bn - 14bn, with a best estimate of UK Pounds 8bn (NPV, 2005). The risks for gas prices and security of supply (included in the Impact Assessment) are judged to be small. The Government proposes a 'forward plan', consisting of support for Ofgem's work on maximising the commercial flexibilities for the GB gas market to handle gases of different specifications, whilst continuing to engage in EU discussions on the gas quality issue. (Author)

  12. Design of a high-lift experiment in water including active flow control

    International Nuclear Information System (INIS)

    Beutel, T; Schwerter, M; Büttgenbach, S; Leester-Schädel, M; Sattler, S; El Sayed, Y; Radespiel, R; Zander, M; Sinapius, M; Wierach, P

    2014-01-01

    This paper describes the structural design of an active flow-control experiment. The aim of the experiment is to investigate the increase in efficiency of an internally blown Coanda flap using unsteady blowing. The system uses tailor-made microelectromechanical (MEMS) pressure sensors to determine the state of the oncoming flow and an actuated lip to regulate the mass flow and velocity of a stream near a wall over the internally blown flap. Sensors and actuators are integrated into a highly loaded system that is extremely compact. The sensors are connected to a bus system that feeds the data into a real-time control system. The piezoelectric actuators using the d 33 effect at a comparable low voltage of 120 V are integrated into a lip that controls the blowout slot height. The system is designed for closed-loop control that efficiently avoids flow separation on the Coanda flap. The setup is designed for water-tunnel experiments in order to reduce the free-stream velocity and the system’s control frequency by a factor of 10 compared with that in air. This paper outlines the function and verification of the system’s main components and their development. (technical note)

  13. Quality Assurance/Quality Control Issues for Intraoperative Planning and Adaptive Repeat Planning of Image-Guided Prostate Implants

    International Nuclear Information System (INIS)

    Zaider, Marco; Cohen, Gilad; Meli, Jerome; Rosenfeld, Anatoly B.

    2008-01-01

    The quality assurance/quality control purpose is this. We design a treatment plan, and we wish to be as certain as reasonably possible that the treatment is delivered as planned. In the case of conventionally planned prostate brachytherapy, implementing to the letter the implantation plan is rarely attainable and therefore can require adaptive replanning (a quality control issue). The reasons for this state of affairs include changes in the prostate shape and volume during implantation and treatment delivery (e.g., edema resolution) and unavoidable inaccuracy in the placement of the seeds in the prostate. As a result, quality-control activities (e.g., the need to monitor-ideally, on the fly-the target and urethral and rectal dosage) must be also addressed

  14. Human factors design of nuclear power plant control rooms including computer-based operator aids

    International Nuclear Information System (INIS)

    Bastl, W.; Felkel, L.; Becker, G.; Bohr, E.

    1983-01-01

    The scientific handling of human factors problems in control rooms began around 1970 on the basis of safety considerations. Some recent research work deals with the development of computerized systems like plant balance calculation, safety parameter display, alarm reduction and disturbance analysis. For disturbance analysis purposes it is necessary to homogenize the information presented to the operator according to the actual plant situation in order to supply the operator with the information he most urgently needs at the time. Different approaches for solving this problem are discussed, and an overview is given on what is being done. Other research projects concentrate on the detailed analysis of operators' diagnosis strategies in unexpected situations, in order to obtain a better understanding of their mental processes and the influences upon them when such situations occur. This project involves the use of a simulator and sophisticated recording and analysis methods. Control rooms are currently designed with the aid of mock-ups. They enable operators to contribute their experience to the optimization of the arrangement of displays and controls. Modern control rooms are characterized by increasing use of process computers and CRT (Cathode Ray Tube) displays. A general concept for the integration of the new computerized system and the conventional control panels is needed. The technical changes modify operators' tasks, and future ergonomic work in nuclear plants will need to consider the re-allocation of function between man and machine, the incorporation of task changes in training programmes, and the optimal design of information presentation using CRTs. Aspects of developments in control room design are detailed, typical research results are dealt with, and a brief forecast of the ergonomic contribution to be made in the Federal Republic of Germany is given

  15. Fuel element radiometry system for quality control

    International Nuclear Information System (INIS)

    Bhattacharya, Sadhana; Gaur, Swati; Sridhar, Padmini; Mukhopadhyay, P.K.; Vaidya, P.R.; Das, Sanjoy; Sinha, A.K.; Bhatt, Sameer

    2010-01-01

    An indigenous and fully automatic PC based radiometry system has been designed and developed. The system required a vibration free scanning with various automated sequential movements to scan the fuel pin of size 5.8 mm (OD) x 1055 mm (L) along its full length. A mechanical system with these requirements and precision controls has been designed. The system consists of a tightly coupled and collimated radiation source-detector unit and data acquisition and control system. It supports PLC based control electronics to control and monitor the movement of fuel element, nuclear data acquisition and analysis system and feedback system to the mechanical scanner to physically accept or reject the fuel pin based on the decision derived by the software algorithms. (author)

  16. Quality control of radioactive waste products

    International Nuclear Information System (INIS)

    Martens, B.R.; Warnecke, E.; Odoj, R.

    1986-01-01

    The variety of incoming untreated wastes, treatment methods, waste forms and containers requires a great variety of controlling methods and principles to be applied both during waste treatment and on the final product. The paper describes product control schemes and methods, sampling systems and transportable testing equipment for waste drums, and equipment for waste cementation using in-drum stirring and subsequent fixation of solid wastes in the flowable product. (DG) [de

  17. US quality control in Italy: present and future

    Science.gov (United States)

    Balbis, S.; Musacchio, C.; Guiot, C.; Spagnolo, R.

    2011-02-01

    US diagnostic equipments are widely diffused in Italy but, in spite of recommendations (e.g. ISPESL-Ministry of Health (1999) and SIRM (Società Italiana di Radiologia Medica, 2004), US quality controls are restricted to only a few public sanitary structure and a national (or even regional) quality assurance program for testing the performances of the US equipments is still missing. A joint Research Centre among the three Piedmontese Universities and INRIM, partially funded by Regione Piemonte, has been established in 2009 as Reference Centre for Medical Ultrasounds (CRUM). In addition to research, development and training tasks, the Centre aims at the local diffusion of the quality assurance in clinical US equipments. According to data from the Ministry of Health (2006), around 7 % of the Italian US diagnostic equipments (946 over 13526) are located in Piedmont: mostly (75.6%) in public hospitals, 9.3 % in conventionated hospitals, 4.3% in public and 10.8% in private territorial structures. The goal is the provision of a regional database, which progressively includes data related to acceptance test, status and QC tests and maintenance, in order to drive equipment turnover and carefully monitoring the overall equipment efficiency. Moreover, facilities are available at CRUM for monitoring both beam geometry and acoustic power and performing quantitative assessment of the delivered energy intensity.

  18. Modeling of Pem Fuel Cell Systems Including Controls and Reforming Effects for Hybrid Automotive Applications

    National Research Council Canada - National Science Library

    Boettner, Daisie

    2001-01-01

    .... This study develops models for a stand-alone Proton Exchange Membrane (PEM) fuel cell stack, a direct-hydrogen fuel cell system including auxiliaries, and a methanol reforming fuel cell system for integration into a vehicle performance simulator...

  19. Dosimetry and quality control in radiodiagnosis

    International Nuclear Information System (INIS)

    Le Gouic, M.

    1983-07-01

    This work deals with physics of radiodiagnosis. In a first part a study of the characteristics of different kinds of radiological equipments and a quality assurance of some of them (standard radiography, coronarography and computed tomography) have been performed. The second part deals with patient irradiation. After a bibliographic study of radiodiagnosis dosimetry, two kinds of dosimetric measures have been made: ''in vitro'' measures, using a phantom, that had allowed to calibrate the equipment and to improve the individual irradiation card, and ''in vivo'' measures. For the first types of measures ionization chambers, have been used for the second thermoluminescent dosimeters [fr

  20. Internal control reporting and accounting quality : Insight "comply-or-explain" internal control regime

    OpenAIRE

    Cao Thi Thanh, Huyen; Cheung, Tina

    2010-01-01

    Nowadays, there exist two reporting regimes, rules-based and principle-based (comply-or-explain). In the rules-based environment, researchers have studied the relationship between internal control quality and accounting quality. Prior studies have suggested that reports on internal control are an effective way for investors to evaluate the quality of the firm‟s internal control. By having a sound system of internal control, it creates reliance upon the firm‟s financial reporting. Therefore, t...

  1. Internal quality control of PCR-based genotyping methods

    DEFF Research Database (Denmark)

    Bladbjerg, Else-Marie; Gram, Jørgen; Jespersen, Jørgen

    2002-01-01

    Internal quality control programmes for genetic analyses are needed. We have focused on quality control aspects of selected polymorphism analyses used in thrombosis research. DNA was isolated from EDTA-blood (n = 500) and analysed for 18 polymorphisms by polymerase chain reaction (PCR), i...... because of positive reagent blanks (controls (Control of data handling revealed 0.1% reading mistakes and 0.5% entry mistakes. Based on our experiences, we propose an internal quality control programme......, electrophoresis (analytical factors), result reading and entry into a database (post-analytical factors). Furthermore, we evaluated a procedure for result confirmation. Isolated DNA was of good quality (42 micrograms/ml blood, A260/A280 ratio > 1.75, negative DNAsis tests). Occasionally, results were reanalysed...

  2. Quality control of CANDU6 fuel element in fabrication process

    International Nuclear Information System (INIS)

    Li Yinxie; Zhang Jie

    2012-01-01

    To enhance the fine control over all aspects of the production process, improve product quality, fuel element fabrication process for CANDU6 quality process control activities carried out by professional technical and management technology combined mode, the quality of the fuel elements formed around CANDU6 weak links - - end plug , and brazing processes and procedures associated with this aspect of strict control, in improving staff quality consciousness, strengthening equipment maintenance, improved tooling, fixtures, optimization process test, strengthen supervision, fine inspection operations, timely delivery carry out aspects of the quality of information and concerns the production environment, etc., to find the problem from the improvement of product quality and factors affecting the source, and resolved to form the active control, comprehensive and systematic analysis of the problem of the quality management concepts, effectively reducing the end plug weld microstructure after the failure times and number of defects zirconium alloys brazed, improved product quality, and created economic benefits expressly provided, while staff quality consciousness and attention to detail, collaboration department, communication has been greatly improved and achieved very good management effectiveness. (authors)

  3. APPLICATION OF HIDDEN MARKOV CHAINS IN QUALITY CONTROL

    Directory of Open Access Journals (Sweden)

    Hanife DEMIRALP

    2013-01-01

    Full Text Available The ever growing technological innovations and sophistication in industrial processes require adequate checks on quality. Thus, there is an increasing demand for simple and efficient quality control methods. In this regard the control charts stand out in simplicity and efficiency. In this paper, we propose a method of controlling quality based on the theory of hidden Markov chains. Based on samples drawn at different times from the production process, the method obtains the state of the process probabilistically. The main advantage of the method is that it requires no assumption on the normality of the process output.

  4. Quality control in nuclear medicine;Mise en oeuvre du controle de qualite en medecine nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Voyant, C. [Hopital de Castelluccio, unite de radiophysique, 20 - Ajaccio (France); Universite de Corse, CNRS UMR SPE 6134, 20 - Corte (France)

    2010-03-15

    Like in many nuclear medicine centers, the A.F.S.S.A.P.S. decision of November 25, 2008, has slightly changed our habits. The centers with medical physicist already made most of these controls, and this concept was not new for them. But what about the other centers? Sometimes, measures were made as expected, other times the manufacturers were expected to do them during the maintenance time, often nothing was formalized, and even in some cases nothing was done. Our experience in quality control in nuclear medicine is relatively recent, but we find interesting to raise some issues, including the duration for all these controls, the possible delegations, the means necessary to build them and difficulties in applying these controls. (author)

  5. Quality control of 131I treatment of graves' disease

    International Nuclear Information System (INIS)

    Liu Zeng; Liu Guoqiang

    2009-01-01

    To make a preliminary quality control (QC) criteria and apply on the various stages of clinic 131 I treatment of Graves' disease in order to decrease the early happening of hypothyroidism and enhance the onetime 131 I cure rate of Graves' disease, the quality control criteria in the stochastic outpatient with 131 I treatment, such as plan of the indication, contraindication, method of treatment, matters needing attention, follow-up observation and curative effect appraisal, patient selection, RAIU, thyroid gland weight measurement and 131 I dose criteria for the various steps of 131 I medication were determined. The 131 I treatment effects of Graves' disease including the once-cure rate, the improving rate, duplicate cure rate and the early happening rate of hypothyroidism were analyzed in patients with applying QC and without QC ccriteria. The results showed that the oncecure rate in patients with applying QC criteria was increased from 76.6% to 90.9% (P≤0.01); the improving rate was decreased from 12.2% to 7.0% (P≤0.01); the duplicate cure rate was increased from 90.1% to 93.0% (P>0.05); the early happening rate of hypothyroidism was decreased from 11.0% to 2.1% (P≤0.01). The 131 I treatment of Graves' disease applying with QC criteria had tremendously improved the oncecure rate and decreased the early happening of hypothyroidism rate. (authors)

  6. Design and quality control of an environmental data acquisition system

    International Nuclear Information System (INIS)

    FANJIRINDRATOVO, T.

    2009-01-01

    The present work is focused on the design of a microcontroller based measurement system and the control quality to validate it. So, a mobile instrument called DALENPA was designed to measure and log the following data: atmospheric pressure, ambient temperature, relative humidity, wind speed and direction, air dose rate, geographical coordinates by an embedded GPS receiver. The instrument is autonomous in energy by solar panel and can be connected to a PC directly or by modem. After, the quality control is based on the calibartion in a secondary laboratory. The target is to get its calibration curve and the estimation of global uncertainties. This estimation wants to include all sources of uncertainty belonging to the instrument and the secondary laboratory, and follows the method estabilished by the International Organization for Standardization (ISO) and the Bureau International des Poids et Mesures (BIPM). The calibration curve is fitted by the least squares method with uncertainties in the two variables. We got an efficient instrument with uncertainties under the limits estabilished by the regulating standards [fr

  7. Structural Elements Regulating AAA+ Protein Quality Control Machines.

    Science.gov (United States)

    Chang, Chiung-Wen; Lee, Sukyeong; Tsai, Francis T F

    2017-01-01

    Members of the ATPases Associated with various cellular Activities (AAA+) superfamily participate in essential and diverse cellular pathways in all kingdoms of life by harnessing the energy of ATP binding and hydrolysis to drive their biological functions. Although most AAA+ proteins share a ring-shaped architecture, AAA+ proteins have evolved distinct structural elements that are fine-tuned to their specific functions. A central question in the field is how ATP binding and hydrolysis are coupled to substrate translocation through the central channel of ring-forming AAA+ proteins. In this mini-review, we will discuss structural elements present in AAA+ proteins involved in protein quality control, drawing similarities to their known role in substrate interaction by AAA+ proteins involved in DNA translocation. Elements to be discussed include the pore loop-1, the Inter-Subunit Signaling (ISS) motif, and the Pre-Sensor I insert (PS-I) motif. Lastly, we will summarize our current understanding on the inter-relationship of those structural elements and propose a model how ATP binding and hydrolysis might be coupled to polypeptide translocation in protein quality control machines.

  8. Quality control of X-ray irradiator by biological markers

    International Nuclear Information System (INIS)

    Miura, Miwa; Lukmanul Hakkim, F.; Yoshida, Masahiro; Matsuda, Naoki; Morita, Naoko

    2011-01-01

    The exposure of animals or cultured cells to radiation is the essential and common step in experimental researches to elucidate biological effects of radiation. When an X-ray generator is used as a radiation source, physical parameters including dose, dose rate, and the energy spectrum of X-ray play crucial roles in biological outcome. Therefore, those parameters are the important points to be checked in quality control and to be carefully considered in advance to the irradiation to obtain the accurate and reproductive results. Here we measured radiation dose emitted from the X-ray irradiator for research purposes by using clonogenic survival of cultured mammalian cells as a biological marker in parallel with physical dosimetry. The results drawn from both methods exhibited good consistency in the dose distribution on the irradiation stage. Furthermore, the close relationship was observed between cell survival and the photon energy spectrum by using different filter components. These results suggest that biological dosimetry is applicable to quality control of X-ray irradiator in adjunct to physical dosimetry and that it possibly helps better understanding of the optimal irradiating condition by X-ray users in life-science field. (author)

  9. Implementation of a quality control program in nuclear medicine

    International Nuclear Information System (INIS)

    Mendes, Leopoldino da Cruz Gouveia

    1983-01-01

    Rectilinear scanners and dose calibrators were tested for a variety of operating conditions and performance.The tests for rectilinear scanners were based on image quality obtained with phantoms of the brain, liver and thyroid. The parameters investigated for rectilinear scanners included the direct control of the operator, such as the proper setting of the focal distance, the velocity, the photopeak calibration, contrast, correct collimator, line spacing and back ground count.The accuracy of dose calibrators was checked with sources of Cs-137, Co-57 and Co-60. The linearity of dose calibrators was checked with sources of technetium-99m and geometry was likewise checked with variable volumes of technetium-99m.The evaluation of the proper setting for rectilinear scanners was made by determining the number of hot and cold areas in the phantom before and after corrective adjustments of physical parameters.The results obtained on rectilinear scanners indicated efficiencies in the operating conditions. The results found on dose calibrators shown that geometry effect was minimal; the reproducibility and stability was satisfactory. However,more than a half(60%)of the dose calibrators tested for accuracy and linearity were performed without acceptable limits. We can conclude that is very useful and important the implementation of quality control programme to entire diagnostic process in nuclear medicine. (author)

  10. AMAZON RAINFOREST COSMETICS: CHEMICAL APPROACH FOR QUALITY CONTROL

    Directory of Open Access Journals (Sweden)

    Mariko Funasaki

    2016-02-01

    Full Text Available The market for natural cosmetics featuring ingredients derived from Amazon natural resources is growing worldwide. However, there is neither enough scientific basis nor quality control of these ingredients. This paper is an account of the chemical constituents and their biological activities of fourteen Amazonian species used in cosmetic industry, including açaí (Euterpe oleracea, andiroba (Carapa guianensis, bacuri (Platonia insignis, Brazil nut (Bertholletia excelsa, buriti (Mauritia vinifera or M. flexuosa, cumaru (Dipteryx odorata, cupuaçu (Theobroma grandiflorum, guarana (Paullinia cupana, mulateiro (Calycophyllum spruceanum, murumuru (Astrocaryum murumuru, patawa (Oenocarpus bataua or Jessenia bataua, pracaxi (Pentaclethra macroloba, rosewood (Aniba rosaeodora, and ucuuba (Virola sebifera. Based on the reviewed articles, we selected chemical markers for the quality control purpose and evaluated analytical methods. Even though chromatographic and spectroscopic methods are major analytical techniques in the studies of these species, molecular approaches will also be important as used in food and medicine traceability. Only a little phytochemical study is available about most of the Amazonian species and some species such as açaí and andiroba have many reports on chemical constituents, but studies on biological activities of isolated compounds and sampling with geographical variation are limited.

  11. Quality control for the construction of Ikata Nuclear Power Station No. 2 Unit

    International Nuclear Information System (INIS)

    Onishi, Akiyoshi

    1983-01-01

    In the construction of No. 2 unit in Ikata Nuclear Power Station, Shikoku Electric Power Co., the quality control was practiced making effective use of the experience in preceding stations including the Three Mile Island station, U.S., and improving those. The construction works were also performed in consideration of ensuring the safe running of No. 1 unit in commercial operation. In this report, first the outline of No. 2 unit facility and the quality control in the construction processes are described sequentially. For the comprehensive quality control activity over a series of plant design, manufacturing, installation and commissioning processes, the quality control policy was fixed, the system was established, the plan was prepared, and the quality control was promoted as planned and systematically. The outline of the quality control in each stage is described as follows. Design stage: It was implemented for the confirmation of applicable standards and references, the management of drawings submitted for approval, the selection of materials used, the coordination among sub-contractors, design change and the reflection of experience in preceding stations. Manufacturing stage. It was performed for material control, manufacturing management, factory test and control. Installation stage. It was practiced for the management of installation works, the inspection during the installation, and the check-up and control after the installation. Several quality control items were implemented also in the method of construction works and construction management. (Wakatsuki, Y.)

  12. 77 FR 9969 - Johnson Controls D/B/A Hoover Universal, Inc. Including On-Site Leased Workers from Kelly...

    Science.gov (United States)

    2012-02-21

    ... Johnson Controls, including on-site leased workers from Kelly Services, Sycamore, Illinois. The notice was... amended notice applicable to TA-W-73,074 is hereby issued as follows: ''All workers of Johnston Controls... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-73,074] Johnson Controls D/B/A...

  13. Including Life Cycle Assessment for decision-making in controlling wastewater nutrient removal systems

    DEFF Research Database (Denmark)

    Corominas, Lluís; Larsen, Henrik Fred; Flores-Alsina, Xavier

    2013-01-01

    This paper focuses on the use of Life Cycle Assessment (LCA) to evaluate the performance of seventeen control strategies in wastewater treatment plants (WWTPs). It tackles the importance of using site-specific factors for nutrient enrichment when decision-makers have to select best operating....../or energy savings present an environmental benefit for N&P and P-deficient systems. This is not the case when addressing N-deficient systems for which the use of chemicals (even for improving N removal efficiencies) is not always beneficial for the environment. A sensitivity analysis on using weighting...... of the impact categories is conducted to assess how value choices (policy decisions) may affect the management of WWTPs. For the scenarios with only N-limitation, the LCA-based ranking of the control strategies is sensitive to the choice of weighting factors, whereas this is not the case for N&P or P...

  14. A randomized controlled trial of Internet-Based Cognitive Behavior Therapy for perfectionism including an investigation of outcome predictors.

    Science.gov (United States)

    Rozental, Alexander; Shafran, Roz; Wade, Tracey; Egan, Sarah; Nordgren, Lise Bergman; Carlbring, Per; Landström, Andreas; Roos, Stina; Skoglund, Malin; Thelander, Elisabet; Trosell, Linnéa; Örtenholm, Alexander; Andersson, Gerhard

    2017-08-01

    Being highly attentive to details can be a positive feature. However, for some individuals, perfectionism can lead to distress and is associated with many psychiatric disorders. Cognitive behavior therapy has been shown to yield many benefits for those experiencing problems with perfectionism, but the access to evidence-based care is limited. The current study investigated the efficacy of guided Internet-based Cognitive Behavior Therapy (ICBT) and predictors of treatment outcome. In total, 156 individuals were included and randomized to an eight-week treatment or wait-list control. Self-report measures of perfectionism, depression, anxiety, self-criticism, self-compassion, and quality of life were distributed during screening and at post-treatment. Intention-to-treat were used for all statistical analyses. Moderate to large between-group effect sizes were obtained for the primary outcome measures, Frost Multidimensional Perfectionism Scale, subscales Concerns over Mistakes and Personal Standards, Cohen's d = 0.68-1.00, 95% Confidence Interval (CI) [0.36-1.33], with 35 (44.9%) of the patients in treatment being improved. Predictors were also explored, but none were related to treatment outcome. In sum, guided ICBT can be helpful for addressing problems with clinical perfectionism, but research of its long-term benefits is warranted. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. Web quality control for lectures: Supercourse and Amazon.com.

    Science.gov (United States)

    Linkov, Faina; LaPorte, Ronald; Lovalekar, Mita; Dodani, Sunita

    2005-12-01

    Peer review has been at the corner stone of quality control of the biomedical journals in the past 300 years. With the emergency of the Internet, new models of quality control and peer review are emerging. However, such models are poorly investigated. We would argue that the popular system of quality control used in Amazon.com offers a way to ensure continuous quality improvement in the area of research communications on the Internet. Such system is providing an interesting alternative to the traditional peer review approaches used in the biomedical journals and challenges the traditional paradigms of scientific publishing. This idea is being explored in the context of Supercourse, a library of 2,350 prevention lectures, shared for free by faculty members from over 150 countries. Supercourse is successfully utilizing quality control approaches that are similar to Amazon.com model. Clearly, the existing approaches and emerging alternatives for quality control in scientific communications needs to be assessed scientifically. Rapid explosion of internet technologies could be leveraged to produce better, more cost effective systems for quality control in the biomedical publications and across all sciences.

  16. USE OF INTELLECTUAL TECHNOLOGIES FOR QUALITY CONTROL OF CURD

    Directory of Open Access Journals (Sweden)

    M. M. Blagoveshchenskaya

    2015-01-01

    Full Text Available In this article, we consider additional method of quality control of curds by organoleptic properties. Method consists in construction of neural network model to estimate quality of curds by input and output parameters. Quality control of curds by organoleptic properties is not necessary according to state standard specification, therefore we use exemplary 5-score scale for organoleptic estimation. Author gives an example of fundamental operation which is necessary for neural networks projection and gives recommendation for integrated hardware/software solution design. This method makes easier quality control of final product because operator can react on digression in the technological process in proper time (use data recommended by neural network, predict quality of final product in case when technological parameters deviate from the norm.

  17. Cold plasma: Quality control and regulatory considerations

    Science.gov (United States)

    In recent years, cold plasma has emerged as a promising antimicrobial treatment for fresh and fresh-cut produce, nuts, spices, seeds, and other foods. Research has demonstrated effective control of human pathogens such as Salmonella, Listeria monocytogenes, Escherichia coli O157:H7, norovirus, and o...

  18. Hippuran-123 I: labelling and quality control

    International Nuclear Information System (INIS)

    Barboza, M.F. de; Colturato, M.T.; Herrerias, R.; Muramoto, E.

    1992-01-01

    The o-iodo hippuric acid labelling with radioiodine is a radiopharmaceutical used with more frequently for evaluation the kidney function. Several reactive kits for labelling with 123 I are prepared. Controls of radiochemical purity and biological distribution are made. The reactive kit of hippuran is kept at 4 C during 2 years. (C.G.C.)

  19. Sensorless Speed Control including zero speed of Non Salient PM Synchronous Drives

    DEFF Research Database (Denmark)

    Rasmussen, Henrik

    This paper presents a position sensorless drive of non salient pole PM synchronous motors for all speeds including zero speed. Using adaptive Lyapunov design a new approach for the design of an observer is developed. The resulting scheme leads to a nonlinear full order observer for the motor states...

  20. Sensorless Speed Control including zero speed of Non Salient PM Synchronous Drives

    DEFF Research Database (Denmark)

    Rasmussen, Henrik

    2005-01-01

    This paper presents a position sensorless drive of non salient pole PM synchronous motors for all speeds including zero speed. Using adaptive Lyapunov design a new approach for the design of an observer is developed. The resulting scheme leads to a nonlinear full order observer for the motor states...

  1. Sensorless speed Control including Zero Speed on Non Salient PM Synchronous Drives

    DEFF Research Database (Denmark)

    Rasmussen, Henrik

    2006-01-01

    This paper presents a position sensorless drive of non salient pole PM synchronous motors for all speeds including zero speed. Using adaptive Lyapunov design a new approach for the design of an observer is developed. The resulting scheme leads to a nonlinear full order observer for the motor states...

  2. Preparation and quality control of ECD kit

    International Nuclear Information System (INIS)

    Yassin, T.; Dadokh, M.; Almalki, R.

    2005-05-01

    ECD Kit for brain imaging after labeling with technetium 99m was prepared according to an optimum conditions, Each vial contains 1 mg of ECD and 0.155 mg of stannous chloride anhydrous SnCl 2 , 24 mg of Mannitol and 0.5 mg of Na 2 Ca EDTA, The prepared kit showed high quality satisfying the requirements of international pharmacopoeias from the points of physical, chemical, radiochemical and biological purities, and its validity for human injection. And the labeling yield exceeded 95 % with average value of about 97.63 ± 0.89% for 2mCi /2ml radioactivity , This study also showed that each vial content can be labeled with maximum activity of 99m Tc of about 50 mCi (Authors)

  3. The CEA contribution to quality control

    International Nuclear Information System (INIS)

    Rapin, M.; Colomer, J.

    1979-01-01

    The Commissariat a l'Energie Atomique has developed original methods and techniques for testing delicate components of the primary circuit of pressure water reactors. These techniques make use of a very wide range of non destructive testing methods: Eddy currents, particularly multiple frequencies, for testing steam generator tubes, gudgeon and other pins focused ultrasonics for testing all the welds of the reactor vessel and its cover plate, mixed welds of steam vessels and generators, low welds of the pressurizer and gudgeon pins from the inside. On site use is effected with specific machines intended either for inspecting the tube bundles of steam generators under the responsibility of INTERCONTROLE Co., or for the complete examination of the reactor vessel by mixed CEA/INTERCONTROLE crews under the responsibility of the CEA. All these operations are subjected to a programme of quality assurance that provides the guaranty of execution complying with the procedures in force [fr

  4. Quality control considerations for the KM3NeT Very Large Volume Neutrino Telescope

    Energy Technology Data Exchange (ETDEWEB)

    Sollima, C., E-mail: c.sollima@ing.unipi.it

    2013-10-11

    Within the KM3NeT project a quality management system was proposed that included a qualification process and a database to store information on the design. This paper highlights quality control procedures applicable to KM3NeT and describes the database.

  5. Quality control and assurance of Tc-99m generators and kits applied in SAEC laboratories

    International Nuclear Information System (INIS)

    Yassine, T.

    1998-01-01

    A brief description of quality assurance and quality control system applied in SAEC laboratories for production of 99m Tc-radiopharmaceuticals, is provided. The system includes documentation, procedures, releasing of the products and responsibilities. The system described here undergoes a continues development. (author)

  6. Multiple shooting applied to robust reservoir control optimization including output constraints on coherent risk measures

    DEFF Research Database (Denmark)

    Codas, Andrés; Hanssen, Kristian G.; Foss, Bjarne

    2017-01-01

    The production life of oil reservoirs starts under significant uncertainty regarding the actual economical return of the recovery process due to the lack of oil field data. Consequently, investors and operators make management decisions based on a limited and uncertain description of the reservoir....... In this work, we propose a new formulation for robust optimization of reservoir well controls. It is inspired by the multiple shooting (MS) method which permits a broad range of parallelization opportunities and output constraint handling. This formulation exploits coherent risk measures, a concept...

  7. DTIPrep: Quality Control of Diffusion-Weighted Images

    Directory of Open Access Journals (Sweden)

    Ipek eOguz

    2014-01-01

    Full Text Available In the last decade, diffusion MRI (dMRI studies of the human and animal brain have been used to investigate a multitude of pathologies and drug-related effects in neuroscience research. Study after study identifies white matter (WM degeneration as a crucial biomarker for all these diseases. The tool of choice for studying WM is dMRI. However, dMRI has inherently low signal-to-noise ratio and its acquisition requires a relatively long scan time; in fact, the high loads required occasionally stress scanner hardware past the point of physical failure. As a result, many types of artifacts implicate the quality of diffusion imagery. Using these complex scans containing artifacts without quality control (QC can result in considerable error and bias in the subsequent analysis, negatively affecting the results of research studies using them. However, dMRI QC remains an under-recognized issue in the dMRI community as there are no user-friendly tools commonly available to comprehensively address the issue of dMRI QC. As a result, current dMRI studies often perform a poor job at dMRI QC.Thorough QC of diffusion MRI will reduce measurement noise and improve reproducibility, and sensitivity in neuroimaging studies; this will allow researchers to more fully exploit the power of the dMRI technique and will ultimately advance neuroscience. Therefore, in this manuscript, we present our open-source software, DTIPrep, as a unified, user friendly platform for thorough quality control of dMRI data. These include artifacts caused by eddy-currents, head motion, bed vibration and pulsation, venetian blind artifacts, as well as slice-wise and gradient-wise intensity inconsistencies. This paper summarizes a basic set of features of DTIPrep described earlier and focuses on newly added capabilities related to directional artifacts and bias analysis.

  8. European quality assurance and quality control for cut-off walls and caps

    International Nuclear Information System (INIS)

    Jefferis, S.A.

    1997-01-01

    Cut-off walls and caps both may be seriously compromised by small areas of substandard materials or work. Quality assurance/quality control is therefore of crucial importance and the paper sets out the issues that need to be addressed when designing a quality plan for a containment. Consideration is given to the purpose of the containment, the parameters to be controlled, specifications and standards and tests on raw and manufactured materials and on the in-situ containment. It is not the purpose of the paper to give detailed test procedures but rather to identify the questions that must be answered to develop a quality plan

  9. Descriptive study of the quality control in mammography; Estudio descriptivo del control de calidad en mamografia

    Energy Technology Data Exchange (ETDEWEB)

    Gaona, E.; Perdigon C, G.M.; Casian C, G.A.; Azorin N, J.; Diaz G, J.A.I.; Arreola, M. [UAM, Xochimilco 14000 Mexico D.F. (Mexico)

    2005-07-01

    The goal of mammography is to provide contrast between a lesion that is possible residing within the breast and normal surrounding tissue. Quality control is essential for maintaining the contrast imaging performance of a mammography system and incorporate tests that are relevant in that they are predictive of future degradation of contrast imaging performance. These tests will also be done at frequency that is high enough to intercept most drifts in quality imaging or performance before they become diagnostically significant. The quality control study has as objective to describe the results of the assessment of quality imaging elements (film optical density, contrast (density difference), uniformity, resolution and noise) of 62 mammography departments without quality control program and comparison these results with a mammography reference department with a quality control program. When comparing the results they allow seeing the clinical utility of to have a quality control program to reduce the errors of mammography interpretation. (Author)

  10. Method for pulse control in a laser including a stimulated brillouin scattering mirror system

    Science.gov (United States)

    Dane, C. Brent; Hackel, Lloyd; Harris, Fritz B.

    2007-10-23

    A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-linear index of refraction, such as a perfluoro compound. An SBS relay telescope having a telescope focal point includes a baffle at the telescope focal point which blocks off angle beams. A beam splitter is placed between the SBS mirror system and the SBS relay telescope, directing a fraction of the beam to an alternate beam path for an alignment fiducial. The SBS mirror system has a collimated SBS cell and a focused SBS cell. An adjustable attenuator is placed between the collimated SBS cell and the focused SBS cell, by which pulse width of the reflected beam can be adjusted.

  11. Quality control of fireproof coatings for reinforced concrete structures

    Science.gov (United States)

    Gravit, Marina; Dmitriev, Ivan; Ishkov, Alexander

    2017-10-01

    The article analyzes methods of quality inspection of fireproof coatings (work flow, measuring, laboratory, etc.). In modern construction there is a problem of lack of distinct monitoring for the fire protection testing. There is a description of this testing for reinforced concrete structures. The article shows the results of calculation quality control of hatches as an example of fireproof coating for reinforced concrete structures.

  12. Academic Quality Control in Nigerian Universities: Exploring Lecturers' Perceptions

    Science.gov (United States)

    Obiekezie, E. O.; Ejemot-Nwadiaro, R. I.; Essien, M. I.; Timothy, A. Essien

    2014-01-01

    The level of job performance, international comparability and competitiveness of Nigerian university graduates are burning issues. Consequently, the academic quality of Nigerian universities has come under severe criticism. Since university lecturers are key players in quality control in universities, this study explored their perceptions of…

  13. Housing tenancy,data management and quality control

    NARCIS (Netherlands)

    Smeets, J.J.A.M.; Timmermans, H.J.P.

    1993-01-01

    This paper deal s with housing tenancy, data management and quality control. The proposed method is focused on quality characteristics of housing estates in view of rentability risks. It entails a cycle of registration, analysis and implementation of measures. The starting point is the behaviour of

  14. Quality control for diagnostic oral microbiology laboratories in European countries

    NARCIS (Netherlands)

    Rautemaa-Richardson, R.; van der Reijden, W.A.; Dahlen, G.; Smith, A.J.

    2011-01-01

    Participation in diagnostic microbiology internal and external quality control (QC) processes is good laboratory practice and an essential component of a quality management system. However, no QC scheme for diagnostic oral microbiology existed until 2009 when the Clinical Oral Microbiology (COMB)

  15. Quality control in the storage of potatoes for industrial processing

    NARCIS (Netherlands)

    Verdijck, G.J.C.; Tijskens, L.M.M.

    2003-01-01

    A novel control structure for a potato storage facility is presented that is directly geared at the optimal preservation of product quality. The quality of the stored potatoes is defined as frying colour that depends on sugar concentration. The optimal storage conditions are estimated using models

  16. Computer-supported quality control in X-ray diagnosis

    International Nuclear Information System (INIS)

    Maier, W.; Klotz, E.

    1989-01-01

    Quality control of X-ray facilities in radiological departments of large hospitals is possible only if the instrumentation used for measurements is interfaced to a computer. The central computer helps to organize the measurements as well as analyse and record the results. It can also be connected to a densitometer and camera for evaluating radiographs of test devices. Other quality control tests are supported by a mobile station with equipment for non-invasive dosimetry measurements. Experience with a computer-supported system in quality control of film and film processing is described and the evaluation methods of ANSI and the German industrial standard DIN are compared. The disadvantage of these methods is the exclusion of film quality parameters, which can make processing control almost worthless. (author)

  17. Research Ship Oceanus Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Oceanus Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  18. Research Ship Melville Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Melville Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  19. Research Ship Atlantic Explorer Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Atlantic Explorer Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  20. Research Ship Healy Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Healy Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  1. Research Ship Knorr Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Knorr Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  2. Research Ship Nathaniel B. Palmer Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Nathaniel B. Palmer Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and...

  3. NOAA Ship Delaware II Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Delaware II Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  4. Research Ship Atlantis Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Atlantis Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  5. NOAA Ship Pisces Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Pisces Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System (SAMOS)...

  6. Research Ship Robert Gordon Sproul Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Robert Gordon Sproul Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and...

  7. Research Ship Roger Revelle Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Roger Revelle Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  8. NOAA Ship Fairweather Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Fairweather Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  9. NOAA Ship Bell M. Shimada Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Bell M. Shimada Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  10. NOAA Ship Hi'ialakai Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Hi'ialakai Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  11. Research Ship New Horizon Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship New Horizon Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  12. NOAA Ship Ronald Brown Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Ronald Brown Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  13. Research Ship Aurora Australis Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Aurora Australis Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  14. NOAA Ship Miller Freeman Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Miller Freeman Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  15. NOAA Ship David Starr Jordan Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship David Starr Jordan Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  16. NOAA Ship Henry B. Bigelow Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Henry B. Bigelow Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  17. NOAA Ship Oscar Dyson Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Oscar Dyson Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  18. NOAA Ship Oscar Elton Sette Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Oscar Elton Sette Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  19. Research Ship Kilo Moana Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Kilo Moana Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  20. NOAA Ship Nancy Foster Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Nancy Foster Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  1. NOAA Ship Gordon Gunter Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Gordon Gunter Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  2. Research Ship Southern Surveyor Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Southern Surveyor Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  3. NOAA Ship Rainier Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Rainier Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  4. Research Ship Tangaroa Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Tangaroa Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  5. NOAA Ship Ka'imimoana Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Ka'imimoana Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  6. NOAA Ship Oregon II Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Oregon II Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  7. Preparation and quality control of technetium-99m radiopharmaceuticals

    International Nuclear Information System (INIS)

    Samuels, D.L.

    1978-11-01

    Appropriate procedures for the production and quality control of technetium-99m based radiopharmaceuticals in hospital radiopharmacy consistent with the recently published Australian Code of Good Manufacturing Practice are discussed

  8. VERIFICATION TESTING OF AIR POLLUTION CONTROL TECHNOLOGY QUALITY MANAGEMENT PLAN

    Science.gov (United States)

    This document is the basis for quality assurance for the Air Pollution Control Technology Verification Center (APCT Center) operated under the U.S. Environmental Protection Agency (EPA). It describes the policies, organizational structure, responsibilities, procedures, and qualit...

  9. Calibration and quality control for personnel dose meter

    International Nuclear Information System (INIS)

    Wu Rongtao; Zhang Dianqin

    1999-01-01

    Calibration and quality control are the important aspects to assure thermoluminescence dose measurement compliance with the technical standards. The author discussed some problems to implement technical standards and regulations

  10. Mössbauer spectroscopy and quality control in ferrate technology

    International Nuclear Information System (INIS)

    Dedushenko, S. K.; Perfiliev, Yu. D.; Kulikov, L. A.

    2013-01-01

    This paper describes some prospective reactants for the ferrate technology of water treatment, the ways of their industrial production and the application of the Mössbauer spectroscopy for their quality control.

  11. Research Ship T. G. Thompson Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship T. G. Thompson Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  12. Research Ship Laurence M. Gould Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Research Ship Laurence M. Gould Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  13. NOAA Ship Okeanos Explorer Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Okeanos Explorer Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic...

  14. Physical chemical quality control of the molybdenum technetium generator

    International Nuclear Information System (INIS)

    Olive, E.; Cruz, J.; Isaac, M.; Gamboa, R.; D'Alessandro, K.; Desdin, L.F.

    1995-01-01

    Comparative operational procedure imported molybdenum technetium generators have been made. Procedures for determination of chemical, radiochemical and radionuclidic purities that may be applied in Hospital's laboratories and in the quality control of generators production are developed

  15. Quality controls of radiopharmaceuticals used in nuclear medicine

    International Nuclear Information System (INIS)

    Gomez de Castiglia, S.I.; Fraga de Suarez, A.H.; Mitta, A.E.A.

    1981-01-01

    Chromatographic quality controls for Tc-99m; In-113m; I-131; Tl-201 and Ga-67 radiopharmaceuticals are described. Moreover, a chromatographic system which allows to separate different radiopharmaceuticals from In-113m is pointed out. (author) [es

  16. Quality control of plane and tomographic gamma cameras

    International Nuclear Information System (INIS)

    Moretti, J.L.; Roussi, A.

    1993-01-01

    In this article, the authors present different methods of gamma camera quality control in matters of uniformity, spatial resolution, spatial linearity, sensitivity, energy resolution, counting rate performance, SPECT parameters. The authors refer mainly to NEMA standards. 14 figs., 8 tabs

  17. Six Sigma Quality Management System and Design of Risk-based Statistical Quality Control.

    Science.gov (United States)

    Westgard, James O; Westgard, Sten A

    2017-03-01

    Six sigma concepts provide a quality management system (QMS) with many useful tools for managing quality in medical laboratories. This Six Sigma QMS is driven by the quality required for the intended use of a test. The most useful form for this quality requirement is the allowable total error. Calculation of a sigma-metric provides the best predictor of risk for an analytical examination process, as well as a design parameter for selecting the statistical quality control (SQC) procedure necessary to detect medically important errors. Simple point estimates of sigma at medical decision concentrations are sufficient for laboratory applications. Copyright © 2016 Elsevier Inc. All rights reserved.

  18. Suggestion for improvement of PET quality control tests in Brazil

    International Nuclear Information System (INIS)

    Ferreira, Fernanda C.L.; Magalhaes, Cinthia M.S.; Souza, Divanizia N.

    2009-01-01

    Nowadays nuclear medicine has a considerable importance among the other medical specialties. This medical specialty utilizes high-tech equipment for imaging in the diagnosis, obtaining information on the clinical functionality of organs and systems of the human body through the use of radioisotopes . In view of the importance of guaranteeing the image quality in SPECT and PET systems, enabling patients not repeat exams due to lack of quality control of equipment used in nuclear medicine, this paper aims to present a possible suggestion to update the quality control tests needed for quality assurance of nuclear medicine services. They were considered the requirements of the National Commission of Nuclear Energy (CNEN) and the National Health Surveillance Agency (ANVISA) in Brazil. The minimum requirements to be defined for inclusion of quality control tests on PET in the standard CNEN are extremely important because they will guide the evaluation of PET systems, determining the quality control tests to be performed. And those tests for PET will be a regulatory requirement by the CNEN and ANVISA. As the National Health Surveillance Agency has already publication of RDC 38 with recommendations for services of nuclear medicine. This study will continue with evaluation of PET systems and presenting the tests of quality control with additional objects and simulators to ensure safety in PET systems have not standardized in nuclear medicine services in Brazil. (author)

  19. Production control system specified quality sausage products

    Directory of Open Access Journals (Sweden)

    A. V. Tokarev

    2016-01-01

    Full Text Available The problem of management of production target in technological system of production of sausages of the set quality is considered in article. Decomposition of technological system is considered. Functions of management are allocated: formation of an optimum compounding of forcemeat, expert analysis of a compounding, laboratory analysis of a compounding and its statement. Information technology of interaction of these functions is offered. The mathematical problem definition of finding of an optimum compounding meat product with use of possible substitutes of ingredients is presented. This mathematical problem is a classical linear programming problem whose solution has the standard program. Since the manufacture of the finished product are various nonlinear effects are taken into account at the present time it is practically impossible, the methodology provided in this operation "Expert analysis of the formulation" and "Laboratory analysis of the finished product." An example of calculating the optimum alternative base recipe "Sausages “Viennese with cheese”" TS 9213-010-40155161-2002. For an alternative formulation demands were made at a cost of meat, the ingredient composition, as well as the final product organoleptic and physic-chemical indicators should comply with regulatory requirements "Sausages “Viennese with cheese”" TS 9213-010-40155161-2002. Indicator acid activity (pH calculated stuffing formulation should be in the range 6.0-6.3. As a partial replacement for the main raw material have been proposed acceptable substitutes. It was necessary to calculate on the basis of the formulation "Sausages “Viennese with cheese”" TS 9213-010-40155161-2002 optimal price and quality alternative formulation. As a result of depreciation of the value of alternative stuffing recipe was 14,5 % when all of the restrictions on the consumer properties. The proposed information technology implemented in the software package "Multi

  20. Nuclear Rocket Test Facility Decommissioning Including Controlled Explosive Demolition of a Neutron-Activated Shield Wall

    International Nuclear Information System (INIS)

    Michael Kruzic

    2007-01-01

    Located in Area 25 of the Nevada Test Site, the Test Cell A Facility was used in the 1960s for the testing of nuclear rocket engines, as part of the Nuclear Rocket Development Program. The facility was decontaminated and decommissioned (D and D) in 2005 using the Streamlined Approach For Environmental Restoration (SAFER) process, under the Federal Facilities Agreement and Consent Order (FFACO). Utilities and process piping were verified void of contents, hazardous materials were removed, concrete with removable contamination decontaminated, large sections mechanically demolished, and the remaining five-foot, five-inch thick radiologically-activated reinforced concrete shield wall demolished using open-air controlled explosive demolition (CED). CED of the shield wall was closely monitored and resulted in no radiological exposure or atmospheric release