Sample records for quality control procedures

  1. Development of Quality Control Procedures for Lepidoptera (United States)

    Lepidopteran species are among the most destructive insect pests throughout the world. The sterile insect technique (SIT), within an area-wide integrated pest management (AW-IPM) approach, has proven to be a valuable tactic for controlling and eradicating important moth pests. Improving laboratory...

  2. Quality control procedures in MISH-MASH systems (United States)

    Szentimrey, T.; Bihari, Z.; Lakatos, M.


    The automatic quality control (QC) procedures in order to indicate or filter out the wrong data are indispensable in the databases. However the development of such software systems is impossible without adequate and advanced mathematical fundament. During the last years we developed some software systems that are MASH (Multiple Analysis of Series for Homogenization) and MISH (Meteorological Interpolation based on Surface Homogenized Data Basis), with special attention for the strong mathematical basis. The MASH system can be used for homogenization of daily and monthly series, furthermore in the system also a quality control (QC) unit has been built for the daily data. Such QC can be an essential part of the homogenization methods which are examined nowadays within the COSTES0601 HOME action. The principle of the QC procedure built in MASH is certain multiple comparisons of the data by spatial interpolation technique and the analysis of interpolation errors for detection of wrong data is based on confidence intervals. In MASH system the necessary climate statistical parameters, such as expected values, spatial and temporal covariance structure, are estimated on the basis of examined data series by classic statistical way. The reason of development of the newer MISH system was that the usual applied interpolation methods built in GIS are able to use only a single realization in time for modelling the climate statistical parameters, while in meteorology we have long data series which form a sample in time and space as well. Nowadays we plan to implement the MASH QC procedure in MISH system as well. The main modification in MISH will be that modelled statistical parameters will be used during the QC procedure but in this case the quality control can be operated also for arbitrary single observation realization in time without long data series.

  3. A quality control procedure for seawater temperature data

    Digital Repository Service at National Institute of Oceanography (India)

    Ghosh, A; Pankajakshan, T.

    A three level quality check has been developed for seawater temperature data. The standards used in the procedure for the quality check are the characteristic property of vertical temperature distribution, watermass property and a standard...

  4. A design procedure and handling quality criteria for lateral directional flight control systems (United States)

    Stein, G.; Henke, A. H.


    A practical design procedure for aircraft augmentation systems is described based on quadratic optimal control technology and handling-quality-oriented cost functionals. The procedure is applied to the design of a lateral-directional control system for the F4C aircraft. The design criteria, design procedure, and final control system are validated with a program of formal pilot evaluation experiments.


    This SOP describes the method for conducting internal field audits and quality control procedures. Internal field audits will be conducted to ensure the collection of high quality data. Internal field audits will be conducted by Field Auditors (the Field QA Officer and the Field...


    This SOP describes the method for conducting internal field audits and quality control procedures. Internal field audits will be conducted to ensure the collection of high quality data. Internal field audits will be conducted by Field Auditors (the Field QA Officer and the Field...


    Directory of Open Access Journals (Sweden)

    V. A. Khavruk


    Full Text Available An application of a priority distribution principle provides a possibility to establish rights and obligations of the parties while executing statistical quality control of products.Procedures of quality control from the side of a manufacturer and a consumer according to PDP are accompanied by certain decisions taken by the parties which in their turn are components of the arbitration characteristic. Arbitration characteristics show probability dependences of  an arbitration situation occurrence on quality indices, parameters of  control plans and decision-making rules.The paper considers cases when control procedures of  a supplier and a  consumer are correct.  The paper also shows that unified control plans and a decision-­making rules do not guarantee generally a correctness of double control procedures. The paper reveals that an intervention of standardization bodies  which is estimated by different amount of expenses depending on a choice of control plans and results is required  in order to ensure a correctness of the control procedures by the parties.

  8. Quality assurance in radiotherapy: from radiation physics to patient- and trial-oriented control procedures. (United States)

    Bernier, J; Horiot, J C; Poortmans, P


    The stepwise process of the EORTC Quality Assurance Programme in Radiotherapy is described in function of two main criteria: the targets of the quality control procedures implemented, in Radiation Physics and clinical research, by the EORTC Radiotherapy Group and the development of both trial- and patient-oriented quality systems. This exhaustive program, which started in 1982, is characterised by three main periods. The first one was fully dedicated to pioneer steps in Radiation Physics measurements, on-site audits and inventories of human resources, staff workload and department infrastructure in institutions participating to EORTC trials. During the second period, which started in the late 1980s, a series of quality systems were implemented to test the compliance of the investigators to follow protocol guidelines, through the use of standard and uniform control procedures like the dummy runs, in order to tackle systematic errors in the participating institutions. Finally, the third period, which took place in the 1990s, was essentially patient-oriented, thanks to large scale individual case reviews, to check the validity of data recording and reporting processes and trace random errors throughout the radiotherapy treatments. Most of the results collected during these two decades allowed the implementation of well codified quality control procedures which, nowadays, can be used outside the field of clinical research, by national societies or bodies willing to improve treatment standards on a large scale.

  9. Current good manufacturing practices, quality control procedures, quality factors, notification requirements, and records and reports, for infant formula. Final rule. (United States)


    The Food and Drug Administration (FDA or we) is issuing a final rule that adopts, with some modifications, the interim final rule (IFR) entitled "Current Good Manufacturing Practices, Quality Control Procedures, Quality Factors, Notification Requirements, and Records and Reports, for Infant Formula'' (February 10, 2014). This final rule affirms the IFR's changes to FDA's regulations and provides additional modifications and clarifications. The final rule also responds to certain comments submitted in response to the request for comments in the IFR.

  10. Enhancement of the Automated Quality Control Procedures for the International Soil Moisture Network (United States)

    Heer, Elsa; Xaver, Angelika; Dorigo, Wouter; Messner, Romina


    In-situ soil moisture observations are still trusted to be the most reliable data to validate remotely sensed soil moisture products. Thus, the quality of in-situ soil moisture observations is of high importance. The International Soil Moisture Network (ISMN; provides in-situ soil moisture data from all around the world. The data is collected from individual networks and data providers, measured by different sensors in various depths. The data sets which are delivered in different units, time zones and data formats are then transformed into homogeneous data sets. An erroneous behavior of soil moisture data is very difficult to detect, due to annual and daily changes and most significantly the high influence of precipitation and snow melting processes. Only few of the network providers have a quality assessment for their data sets. Therefore, advanced quality control procedures have been developed for the ISMN (Dorigo et al. 2013). Three categories of quality checks were introduced: exceeding boundary values, geophysical consistency checks and a spectrum based approach. The spectrum based quality control algorithms aim to detect erroneous measurements which occur within plausible geophysical ranges, e.g. a sudden drop in soil moisture caused by a sensor malfunction. By defining several conditions which have to be met by the original soil moisture time series and their first and second derivative, such error types can be detected. Since the development of these sophisticated methods many more data providers shared their data with the ISMN and new types of erroneous measurements were identified. Thus, an enhancement of the automated quality control procedures became necessary. In the present work, we introduce enhancements of the existing quality control algorithms. Additionally, six completely new quality checks have been developed, e.g. detection of suspicious values before or after NAN-values, constant values and values that lie in a

  11. Towards an integrated quality control procedure for eddy-covariance data (United States)

    Vitale, Domenico; Papale, Dario


    The eddy-covariance technique is nowadays the most reliable and direct way, allowing to calculate the main fluxes of Sensible and Latent Heat and of Net Ecosystem Exchange, this last being the result of the difference between the CO2 assimilated by photosynthetic activities and those released to the atmosphere through the ecosystem respiration processes. Despite the improvements in accuracy of measurement instruments and software development, the eddy-covariance technique is not suitable under non-ideal conditions respect to the instruments characteristics and the physical assumption behind the technique mainly related to the well-developed and stationary turbulence conditions. Under these conditions the calculated fluxes are not reliable and need to be flagged and discarded. In order to discover these unavoidable "bad" fluxes and build dataset with the highest quality, several tests applied both on high-frequency (10-20 Hz) raw data and on half-hourly times series have been developed in the past years. Nevertheless, there is an increasing need to develop a standardized quality control procedure suitable not only for the analysis of long-term data, but also for the near-real time data processing. In this paper, we review established quality assessment procedures and present an innovative quality control strategy with the purpose of integrating the existing consolidated procedures with robust and advanced statistical tests more suitable for the analysis of time series data. The performance of the proposed quality control strategy is evaluated both on simulated and EC data distributed by the ICOS research infrastructure. It is concluded that the proposed strategy is able to flag and exclude unrealistic fluxes while being reproducible and retaining the largest possible amount of high quality data.

  12. Quality control procedures for dose-response curve generation using nanoliter dispense technologies. (United States)

    Quintero, Catherine; Rosenstein, Craig; Hughes, Bethany; Middleton, Richard; Kariv, Ilona


    With the advancement of high-throughput biomolecular screening techniques to the lead optimization stage, there is a critical need to quality control (QC) dose-response curves generated by robotic liquid handlers to ensure accurate affinity determinations. One challenge in evaluating the performance of liquid handlers is identifying and validating a robust method for testing dispense volumes across different instruments. Although traditional automated liquid handlers are still considered the standard platform in many laboratories, nanoliter dispensers are becoming more common and pose new challenges for routine quality control procedures. For example, standard gravimetric measurements are unreliable for testing the accuracy of nanoliter liquid dispenses. However, nanoliter dispensing technology allows for the conservation of compound, reduces compound carryover from well to well through discrete dispenses, and eliminates the need for intermediate compound dilution steps to achieve a low final DMSO assay concentration. Moreover, an intermediate dilution step in aqueous solution might result in compound precipitation at high concentrations. This study compared representative automation procedures done on a variety of liquid dispensers, including manual, traditional, and nanodispense volumes. The data confirmed the importance of establishing robust QC procedures for dose-response generation in addition to accuracy and precision determinations for each instrument, and they validated the use of nanoliter pipettors for dose-response testing. The results of this study also support the requirement for thorough mixing during serial compound dilutions prepared for high-throughput lead optimization strategies using traditional liquid handlers.

  13. Quality control by HyperSpectral Imaging (HSI) in solid waste recycling: logics, algorithms and procedures (United States)

    Bonifazi, Giuseppe; Serranti, Silvia


    In secondary raw materials and recycling sectors, the products quality represents, more and more, the key issue to pursuit in order to be competitive in a more and more demanding market, where quality standards and products certification play a preheminent role. These goals assume particular importance when recycling actions are applied. Recovered products, resulting from waste materials, and/or dismissed products processing, are, in fact, always seen with a certain suspect. An adequate response of the industry to the market can only be given through the utilization of equipment and procedures ensuring pure, high-quality production, and efficient work and cost. All these goals can be reached adopting not only more efficient equipment and layouts, but also introducing new processing logics able to realize a full control of the handled material flow streams fulfilling, at the same time, i) an easy management of the procedures, ii) an efficient use of the energy, iii) the definition and set up of reliable and robust procedures, iv) the possibility to implement network connectivity capabilities finalized to a remote monitoring and control of the processes and v) a full data storage, analysis and retrieving. Furthermore the ongoing legislation and regulation require the implementation of recycling infrastructure characterised by high resources efficiency and low environmental impacts, both aspects being strongly linked to the waste materials and/or dismissed products original characteristics. For these reasons an optimal recycling infrastructure design primarily requires a full knowledge of the characteristics of the input waste. What previously outlined requires the introduction of a new important concept to apply in solid waste recycling, the recycling-oriented characterization, that is the set of actions addressed to strategically determine selected attributes, in order to get goaloriented data on waste for the development, implementation or improvement of recycling

  14. A New Vibration Measurement Procedure for On-Line Quality Control of Electronic Devices

    Directory of Open Access Journals (Sweden)

    Gian Marco Revel


    Full Text Available In this paper the problem of experimentally testing the mechanical reliability of electronic components for quality control is approached. In general, many tests are performed on electronic devices (personal computers, power supply units, lamps, etc., according to the relevant international standards (IEC, in order to verify their resistance to shock and vibrations, but these are mainly “go no-go” experiments, performed on few samples taken from the production batches.

  15. Statistical elements in calculations procedures for air quality control; Elementi di statistica nelle procedure di calcolo per il controllo della qualita' dell'aria

    Energy Technology Data Exchange (ETDEWEB)

    Mura, M.C. [Istituto Superiore di Sanita' , Laboratorio di Igiene Ambientale, Rome (Italy)


    The statistical processing of data resulting from the monitoring of chemical atmospheric pollution aimed at air quality control is presented. The form of procedural models may offer a practical instrument to the operators in the sector. The procedural models are modular and can be easily integrated with other models. They include elementary calculation procedures and mathematical methods for statistical analysis. The calculation elements have been developed by probabilistic induction so as to relate them to the statistical analysis. The calculation elements have been developed by probabilistic induction so as to relate them to the statistical models, which are the basis of the methods used for the study and the forecast of atmospheric pollution. This report is part of the updating and training activity that the Istituto Superiore di Sanita' has been carrying on for over twenty years, addressed to operators of the environmental field. [Italian] Il processo di elaborazione statistica dei dati provenienti dal monitoraggio dell'inquinamento chimico dell'atmosfera, finalizzato al controllo della qualita' dell'aria, e' presentato in modelli di procedure al fine di fornire un sintetico strumento di lavoro agli operatori del settore. I modelli di procedure sono modulari ed integrabili. Includono gli elementi di calcolo elementare ed i metodi statistici d'analisi. Gli elementi di calcolo sono sviluppati con metodo d'induzione probabilistica per collegarli ai modelli statistici, che sono alla base dei metodi d'analisi nello studio del fenomeno dell'inquinamento atmosferico anche a fini previsionali. Il rapporto si inserisce nell'attivita' di aggiornamento e di formazione che fin dagli anni ottanta l'Istituto Superiore di Sanita' indirizza agli operatori del settore ambientale.

  16. Development and application of a quality control procedure for short-wave diathermy units. (United States)

    Shields, N; O'Hare, N; Boyle, G; Gormley, J


    Short-wave diathermy (SWD) is a form of radiofrequency (RF) radiation, operating at 27.12 MHz, that is used therapeutically by physiotherapists. Although this form of therapy is widely available, the management of the equipment is not often addressed by either physiotherapists or by medical physics/clinical engineering. A quality control protocol for SWD units, examining power output and electrical and mechanical condition, was developed and applied to 20 units used in clinical practice. In addition, an environmental assessment of where the units were used was also included. Results showed that the power output was generally stable (coefficient of variation range 0-8.8%) and reproducible (coefficient of variation range 0-6.8%). When the outputs from 12 similar units were compared, it was found that the relationship between the units' intensity settings and power output measurements was non-linear. Two units with mechanical timers were found to have inaccuracies that could contribute, under a 'worst-case' scenario, to a dosage error of up to 45%. Environmental analysis found that all treatment plinths in use contained metal parts, which could constitute a fire hazard, and no department examined was equipped with an RF screened room, a facility that would ensure that other persons in the vicinity were not exposed to excessive stray radiation.

  17. The r H index for quality and environmental controls. Standards and application procedures

    Energy Technology Data Exchange (ETDEWEB)

    Antonini, D.; Falciola, L.; Mussini, R.; Mussini, T. [Milan Univ., Milan (Italy). Dept. of Physical Chemistry and Electrochemistry


    The quantity r H, an index of the reducing power of a redox system is, in conceptual and operational terms, coordinatively linked with the two familiar electro analytical quantities: redox potential (Eor) and p H, and has recently become important in quality and environmental controls (hydrographic network, human consumption waters, industrial effluents, etc.). It has some significant problems of standardization and methodological applications, especially on passing from pure water medium to aqueous-organic media, and the results of the most recent researches are here presented. [Italian] La grandezza rH, indice del potere riducente di un sistema redox, la cui operativita' tiene conto coordinativamente delle due grandezze elettroanalitiche potenziale redox (Eor) e pH, ha recentemente acquisito notevole importanza in controlli di qualita' ed ecologico-ambientali (idrografia, acque di consumo umano, effluenti, reflui, ecc.), e presenta problemi normativi ed applicativi (specialmente quando si passa da solventi acquosi a solventi acquo-organici) per i quali vengono qui presentati i risultati delle piu' recenti ricerche.

  18. Evaluation of variability and quality control procedures for a receptor-binding assay for paralytic shellfish poisoning toxins. (United States)

    Ruberu, S R; Langlois, G W; Masuda, M; Perera, S Kusum


    The receptor-binding assay (RBA) method for determining saxatoxin (STX) and its numerous analogues, which cause paralytic shellfish poisoning (PSP) in humans, was evaluated in a single laboratory study. Each step of the assay preparation procedure including the performance of the multi-detector TopCount® instrument was evaluated for its contribution to method variability. The overall inherent RBA variability was determined to be 17%. Variability within the 12 detectors was observed; however, there was no reproducible pattern in detector performance. This observed variability among detectors could be attributed to other factors, such as pipetting errors. In an attempt to reduce the number of plates rejected due to excessive variability in the method's quality control parameters, a statistical approach was evaluated using either Grubbs' test or the Student's t-test for rejecting outliers in the measurement of triplicate wells. This approach improved the ratio of accepted versus rejected plates, saving cost and time for rerunning the assay. However, the potential reduction in accuracy and the lack of improvement in precision suggests caution when using this approach. The current study has recommended an alternate quality control procedure for accepting or rejecting plates in place of the criteria currently used in the published assay, or the alternative of outlier testing. The recommended procedure involves the development of control charts to monitor the critical parameters identified in the published method (QC sample, EC₅₀, slope of calibration curve), with the addition of a fourth critical parameter which is the top value (100% binding) of the calibration curve.

  19. A proposal for an alternative quality control test procedure for inactivated vaccines against food-and-mouth disease virus. (United States)

    Molin-Capeti, K C; Sepulveda, L; Terra, F; Torres-Pioli, M F; Costa-Casagrande, T; França, S C; Thomaz-Soccol, V


    Foot-and-mouth disease (FMD) control in Brazil includes a strict mandatory vaccination program with vaccines produced in certified laboratories subject to inspection by the Brazilian Ministry of Agriculture, Livestock, and Food Supply (MAPA). The FMD vaccine's potency is tested through antibodies titration against structural viral proteins in sera from cattle that have not had any exposure to food-and-mouth disease virus (FMDV), at 28 days post-vaccination. Biological product testing using large animals is expensive and unwieldy. Thus, alternative testing procedures using laboratory animals have been proposed for quality control of these products. Such biological methods for vaccine evaluation using animals from vivarium facilities can have a significant impact through reduced costs, easier handling, and shorter testing times. The present study was designed to access Balb/C mice's humoral immune responses to a FMDV experimental vaccine, the composition of which contains three virus serotypes of FMDV (O1 Campos, A24 Cruzeiro, and C3 Indaial). Balb/C mice were immunized at doses that were 5% and 10% of the vaccine volume administered in cattle. Immunized mice had their antibody titers probed at 14, 21, and 28 DPV (days post vaccination). The results obtained were compared to those previously known from cattle's immune responses to the FMDV vaccine. An adequate immune response to the vaccine was seen with 10% formulation at 21 DPV. The study results are encouraging and indicate that the mouse model can be used for quality control in experimental vaccine testing.

  20. Quality assurance and quality control data validation procedures used for the Love Canal and Dallas lead soil monitoring programs. (United States)

    Brown, K W; Black, S C


    Public awareness of soils contamination has increased in recent years due in part to the notoriety associated with the indiscriminate release, packaging, transporting and disposal of hazardous materials. In 1980, and again in 1982, the U.S. Environmental Protection Agency (EPA) was responsible for designing, implementing and conducting environmental monitoring programs at Love Canal in Niagara Falls, New York, and in Dallas, Texas, that dealt with suspected contaminated soils. Both of these monitoring programs were conducted over a relatively short time with the collection and analysis of over 4000 soil samples. The methods employed by the Environmental Protection Agency for providing soil data that was scientifically valid and of defensible quality for each of these monitoring programs are presented. Also, methods for identifying data bias, its precision and its uncertainty are identified.

  1. Quality control procedures of dental diagnostic radiology systems; Elaboracao de um procedimento para controle de qualidade em sistemas de radiodiagnostico odontologico

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Paula Serra Sasaki


    This work presents quality control reference procedures for dental diagnostic radiology systems, following the recommendations of the Publication 453 of the Brazilian Health Ministry (PF453), to be applied in dental clinics, in order to achieve an improvement in the radiological image qualities and the patient dose reduction. All tests were applied in an intraoral X rays system, following the methodology developed and the requirements of the PF 453. In order to verify the best quality of the image in relation to the smaller exposition time an object test was also developed in this work. The use of this object allowed the reduction of the exposition time of 0.5 seconds, the maximum value of the linear region of the characteristic curve, for 0.2 seconds. The tested X rays system showed a very good agreement with the applied procedures, detaching the reduction of the skin entrance dose using the film-holding devices. However, the size of the field increased and exceeded the maximum value of 6 cm recommended in the standard. The importance of the quality control in dental diagnostic radiology systems is essential due to the constant use of X radiation in dental clinics. The PF453 recommends the frequency of at least two years for the constancy tests. However, it is suggested that the professional, surgeon-dentist, should be responsible for the internal control of the image quality obtained from the X rays device. This can be done through monthly exposures of the object test developed in this work. (author)

  2. Integrated quality control: implementation and validation of instrument function checks and procedural controls for a cartridge-based point-of-care system for critical care analysis. (United States)

    D'Orazio, Paul; Mansouri, Sohrab


    In this article, the process used to develop and validate an integrated quality-control system for a cartridge-based, point-of-care system for critical care analysis is outlined. Application of risk management principles has resulted in a quality control system using a combination of statistical quality control with onboard reference solutions and failure pattern recognition used to flag common failure modes during the analytical phase of the testing process. A combination of traditional external quality control, integrated quality control to monitor ongoing instrument functionality, operator training, and other laboratory-implemented monitors is most effective in controlling known failure modes during the testing process.

  3. Quality control and data validation procedure in large-scale quantitative monitoring of mosquito density: the case of Aedes albopictus in Emilia-Romagna region, Italy. (United States)

    Carrieri, Marco; Albieri, Alessandro; Urbanelli, Sandra; Angelini, Paola; Venturelli, Claudio; Matrangolo, Carmela; Bellini, Romeo


    The risk of local transmission of chikungunya, dengue, and Zika viruses from viremic travelers arriving from affected areas is a real possibility in southern Europe, due to the large presence of the vector Aedes albopictus. The first chikungunya outbreak in Europe occurred in the Emilia-Romagna region, Italy, in 2007, prompting the regional public health department to implement an Ae. albopictus monitoring and control plan. This paper presents the procedure developed for the quality control of the data collected by the regional ovitrap monitoring network. The quality control procedure consists of four successive steps; the first step is data acquisition and the second is an automatic data processing step, while skilled technicians according to specific procedures perform the third and fourth steps by checking the exact position of the ovitraps and by conducting human landing collections, respectively. The paper also presents the results of this quality control procedure applied to the data collected through the large-scale Ae. albopictus monitoring operation performed in Emilia-Romagna in 2015.

  4. Quality assurance: Importance of systems and standard operating procedures. (United States)

    Manghani, Kishu


    It is mandatory for sponsors of clinical trials and contract research organizations alike to establish, manage and monitor their quality control and quality assurance systems and their integral standard operating procedures and other quality documents to provide high-quality products and services to fully satisfy customer needs and expectations. Quality control and quality assurance systems together constitute the key quality systems. Quality control and quality assurance are parts of quality management. Quality control is focused on fulfilling quality requirements, whereas quality assurance is focused on providing confidence that quality requirements are fulfilled. The quality systems must be commensurate with the Company business objectives and business model. Top management commitment and its active involvement are critical in order to ensure at all times the adequacy, suitability, effectiveness and efficiency of the quality systems. Effective and efficient quality systems can promote timely registration of drugs by eliminating waste and the need for rework with overall financial and social benefits to the Company.

  5. On quality control procedures for solar radiation and meteorological measures, from subhourly to montly average time periods (United States)

    Espinar, B.; Blanc, P.; Wald, L.; Hoyer-Klick, C.; Schroedter-Homscheidt, M.; Wanderer, T.


    Meteorological data measured by ground stations are often a key element in the development and validation of methods exploiting satellite images. These data are considered as a reference against which satellite-derived estimates are compared. Long-term radiation and meteorological measurements are available from a large number of measuring stations. However, close examination of the data often reveals a lack of quality, often for extended periods of time. This lack of quality has been the reason, in many cases, of the rejection of large amount of available data. The quality data must be checked before their use in order to guarantee the inputs for the methods used in modelling, monitoring, forecast, etc. To control their quality, data should be submitted to several conditions or tests. After this checking, data that are not flagged by any of the test is released as a plausible data. In this work, it has been performed a bibliographical research of quality control tests for the common meteorological variables (ambient temperature, relative humidity and wind speed) and for the usual solar radiometrical variables (horizontal global and diffuse components of the solar radiation and the beam normal component). The different tests have been grouped according to the variable and the average time period (sub-hourly, hourly, daily and monthly averages). The quality test may be classified as follows: • Range checks: test that verify values are within a specific range. There are two types of range checks, those based on extrema and those based on rare observations. • Step check: test aimed at detecting unrealistic jumps or stagnation in the time series. • Consistency checks: test that verify the relationship between two or more time series. The gathered quality tests are applicable for all latitudes as they have not been optimized regionally nor seasonably with the aim of being generic. They have been applied to ground measurements in several geographic locations, what

  6. Development and evaluation of Standard Operating Procedures (SOPs) for quality control tests and radiological protection activities in a Nuclear Medicine Service

    Energy Technology Data Exchange (ETDEWEB)

    Krempser, Alexandre R., E-mail: [Universidade Federal do Rio de Janeiro (PEB/COPPE/UFRJ), RJ (Brazil). Programa de Engenharia Biomedica; Soares, Alexandre B. [Universidade Federal do Rio de Janeiro (IF/UFRJ), Rio de Janeiro, RJ (Brazil). Inst. de Fisica; Corbo, Rossana [Universidade Federal do Rio de Janeiro (FM/UFRJ), Rio de Janeiro, RJ (Brazil). Dept. de Radiologia


    The quality management in Nuclear Medicine Services is a requirement of national and international standards. The Brazilian regulatory agency in health surveillance, the Agencia Nacional de Vigilancia Sanitaria (ANVISA), in its Resolucao de Diretoria Colegiada (Collegiate Directory Resolution) no. 38, requires the elaboration of documents describing the technical and clinical routine activities. This study aimed to elaborate, implement and evaluate Standard Operating Procedures (SOPs) for quality control tests and radiological protection activities in the Nuclear Medicine Service of a university hospital. Eighteen SOPs were developed, involving tasks related to dose calibrator, gamma camera, Geiger-Muller detectors and radiological protection activities. The performance of its application was evaluated for a period of six months. It was observed a reduction in 75% of reported operational errors and 42% of the number of reported incidents with contamination by radioactive material. The SOPs were adequate and successful in its application. New procedures involving clinical activities will also be developed and evaluated. (author)

  7. Radiation control standards and procedures

    Energy Technology Data Exchange (ETDEWEB)


    This manual contains the Radiation Control Standards'' and Radiation Control Procedures'' at Hanford Operations which have been established to provide the necessary control radiation exposures within Irradiation Processing Department. Provision is also made for including, in the form of Bulletins'', other radiological information of general interest to IPD personnel. The purpose of the standards is to establish firm radiological limits within which the Irradiation Processing Department will operate, and to outline our radiation control program in sufficient detail to insure uniform and consistent application throughout all IPD facilities. Radiation Control Procedures are intended to prescribe the best method of accomplishing an objective within the limitations of the Radiation Control Standards. A procedure may be changed at any time provided the suggested changes is generally agreeable to management involved, and is consistent with department policies and the Radiation Control Standards.

  8. 21 CFR 226.40 - Production and control procedures. (United States)


    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Production and control procedures. 226.40 Section...) DRUGS: GENERAL CURRENT GOOD MANUFACTURING PRACTICE FOR TYPE A MEDICATED ARTICLES Product Quality Control § 226.40 Production and control procedures. Production and control procedures shall include...

  9. Analysis of the acceptance procedure and quality control a virtual simulation system; Analisis del procedimiento de aceptacion y control de calidad de un sistema de simulacion virtual

    Energy Technology Data Exchange (ETDEWEB)

    Gonzalez Ruiz, C.; Pedrero de Aristizabal, D.; Jimenez Rojas, R.; Garcia Hernandez, M. J.; Ruiz Galan, G.; Ayala Lazaro, R.; Garcia Marcos, R.


    Acceptance has been made, determining the reference state, commissioning and implementation of control protocol virtual simulation system consists of an image acquisition unit of computerized tomography (CT), an independent external location laser locator and a simulation module associated with the existing scheduler for clinical dosimetry in radiotherapy. This paper summarizes the path followed in this process, together with the established procedure for periodic monitoring and analysis system of the results obtained in the two years of clinical and control.

  10. Quality Control Procedures Applied to the CMS Muon Chambers Built at CIEMAT; Procedimientos de Control de Calildad de las Camaras de Muones del Experimento CMS Construidas en el CIEMAT

    Energy Technology Data Exchange (ETDEWEB)

    Fouz, M. C.; Puerta Pelayo, J.


    In this document the quality control procedures applied to the CMS muon drift chmabers built at CIEMAT are described. It includes a description of the high voltage and front electronics associated to the chambers. Every procedure is described with detail and a list of the more common problems and possible solutions is given. This document can be considered as a chambert test handbook for beginners. (Author) 3 refs.

  11. Quality assurance: Importance of systems and standard operating procedures

    Directory of Open Access Journals (Sweden)

    Kishu Manghani


    Full Text Available It is mandatory for sponsors of clinical trials and contract research organizations alike to establish, manage and monitor their quality control and quality assurance systems and their integral standard operating procedures and other quality documents to provide high-quality products and services to fully satisfy customer needs and expectations. Quality control and quality assurance systems together constitute the key quality systems. Quality control and quality assurance are parts of quality management. Quality control is focused on fulfilling quality requirements, whereas quality assurance is focused on providing confidence that quality requirements are fulfilled. The quality systems must be commensurate with the Company business objectives and business model. Top management commitment and its active involvement are critical in order to ensure at all times the adequacy, suitability, effectiveness and efficiency of the quality systems. Effective and efficient quality systems can promote timely registration of drugs by eliminating waste and the need for rework with overall financial and social benefits to the Company.

  12. Implementation of quality control performance criteria and approved guidelines for upgrading of clinical chemistry laboratory procedures in Alexandria University hospitals. (United States)

    Rizk, Mohamed Moustafa M; el-Badawi, Nashwa A; Moez, Pacint E; Khattab, Azza A


    The aim of the present work was to assess the quality of work in Clinical Pathology Department, Alexandria Main University Hospital, Egypt; as regards the pre-analytical and analytical phases of testing; for later accreditation. This evaluation was performed using inspection sheets that were designed according to the CAP 2006 recommendations. All checklist questions that could not be answered "yes" were considered deficiencies and had to be corrected before being accredited. The questions were classified into ten groups; each group contained a number of questions concerning one of the pre-analytical and analytical assessment activities. We ranked our results into 4 categories according to the degree of fulfillment. The total number of questions that were answered "no" at the start and the end of the study accounted for 64/101 (63.4%) and 34/101 (33.7%) questions respectively. Most of the deficiencies were detected in the pre-analytical phase of the testing process; the first two checklists were used for the evaluation of this phase. At the start of the study, the degree of requirements fulfillment in checklist I and II were 0% and 21.1% respectively. By the end of the study the degree of fulfillment became, 85.7% and 63.2% respectively. Average number of sample rejection due to different causes was evaluated before and after implementing CAP recommendations; these causes include haemolysis, clotted serum, quantity not sufficient, and lost samples; the percentage of rejected samples before implementing CAP recommendations was 15.8%, 1.81%, 0.70%, and 0.51% respectively, while after implementing CAP recommendations it was 7%, 0.77%, 0.08%, and 0.05%, respectively. We concluded that the presence of standardized protocol for the pre-analytical activities had improved the quality of samples received by the lab, and we also concluded that accreditation allows laboratories to evaluate their performance, their compliance with the requirements of the accrediting association

  13. Procedure Design to Fulfill Quality Management System

    Institute of Scientific and Technical Information of China (English)


    With the application of the principle of PDCA, and dr awing on the experience of the process methods of the ISO9000 and the system met hods of management, the author analyses the basic requirement to fulfill quality management system in enterprises. Then the author inquires into the procedure t o establish the efficiency quality management system. Finally four stages (plan, do, check, action) and eight steps (decision, plan, analyze, design, do, check, improve, fulfill) are put forward to fulfill qualit...

  14. ALMA quality assurance: concepts, procedures, and tools (United States)

    Chavan, A. M.; Tanne, S. L.; Akiyama, E.; Kurowski, R.; Randall, S.; Vila Vilaro, B.; Villard, E.


    Data produced by ALMA for the community undergoes a rigorous quality assurance (QA) process, from the initial observation ("QA0") to the final science-ready data products ("QA2"), to the QA feedback given by the Principal Investigators (PIs) when they receive the data products ("QA3"). Calibration data is analyzed to measure the performance of the observatory and predict the trend of its evolution ("QA1"). The procedure develops over different steps and involves several actors across all ALMA locations; it is made possible by the support given by dedicated software tools and a complex database of science data, meta-data and operational parameters. The life-cycle of each involved entity is well-defined, and it prevents for instance that "bad" data (that is, data not meeting the minimum quality standards) is ever processed by the ALMA pipeline. This paper describes ALMA's quality assurance concepts and procedures, including the main enabling software components.

  15. 14 CFR 21.139 - Quality control. (United States)


    ... 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...

  16. Quality Control Applications

    CERN Document Server

    Chorafas, Dimitris N


    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 ...

  17. A quality assurance and quality control (QA QC) procedure of the monitored drift tubes (MDT) for the BIS-chambers of the ATLAS muon spectrometer

    CERN Document Server

    Alexopoulos, Theodoros; Dris, M; Filippas-Tassos, A; Gazis, E N; Katsoufis, E C; Maltezos, S; Savva, Panagiota S; Stavropoulos, G D; Tsipolitis, Georgios; Tzamariudaki, Ekaterini


    The ATLAS detector at the Large Hadron Collider at CERN is designed to study the products of proton collisions at energies up to 14 TeV. One of its subdetectors is a high-resolution Muon spectrometer, designed to exploit the physics potential of the collisions. It consists of 1206 Monitored Drift Tube (MDT) chambers, which have to pass very strict quality criteria. For this purpose dedicated setups have been developed and automated at the National Technical University of Athens. In the present report the results of testing about 10,000 drift tubes are presented. These criteria comprise the anode wire mechanical tension, the high voltage dark current, the anode wire displacement, and the gas leak rate of the endplugs and the cylindrical drift tube. 11 Refs.

  18. Improved Methodology for Surface and Atmospheric Soundings, Error Estimates, and Quality Control Procedures: the AIRS Science Team Version-6 Retrieval Algorithm (United States)

    Susskind, Joel; Blaisdell, John; Iredell, Lena


    The AIRS Science Team Version-6 AIRS/AMSU retrieval algorithm is now operational at the Goddard DISC. AIRS Version-6 level-2 products are generated near real-time at the Goddard DISC and all level-2 and level-3 products are available starting from September 2002. This paper describes some of the significant improvements in retrieval methodology contained in the Version-6 retrieval algorithm compared to that previously used in Version-5. In particular, the AIRS Science Team made major improvements with regard to the algorithms used to 1) derive surface skin temperature and surface spectral emissivity; 2) generate the initial state used to start the cloud clearing and retrieval procedures; and 3) derive error estimates and use them for Quality Control. Significant improvements have also been made in the generation of cloud parameters. In addition to the basic AIRS/AMSU mode, Version-6 also operates in an AIRS Only (AO) mode which produces results almost as good as those of the full AIRS/AMSU mode. This paper also demonstrates the improvements of some AIRS Version-6 and Version-6 AO products compared to those obtained using Version-5.

  19. Software product quality control

    CERN Document Server

    Wagner, Stefan


    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

  20. 42 CFR 493.1256 - Standard: Control procedures. (United States)


    ... (CONTINUED) STANDARDS AND CERTIFICATION LABORATORY REQUIREMENTS Quality System for Nonwaived Testing Analytic... for having control procedures that monitor the accuracy and precision of the complete analytic process... in § 493.1253(b)(3). (c) The control procedures must— (1) Detect immediate errors that occur due...

  1. 40 CFR Appendix C to Part 61 - Quality Assurance Procedures (United States)


    ... 40 Protection of Environment 8 2010-07-01 2010-07-01 false Quality Assurance Procedures C Appendix...—Quality Assurance Procedures Procedure 1—Determination of Adequate Chromatographic Peak Resolution In this....” Procedure 2—Procedure for Field Auditing GC Analysis Responsibilities of audit supervisor and analyst at the...

  2. Checking quality control?

    DEFF Research Database (Denmark)

    Brodersen, Lars


    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.?...

  3. 30 CFR 74.6 - Quality control. (United States)


    ... 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...


    Institute of Scientific and Technical Information of China (English)



    Coal storing and loading have much more influence on coal quality. In the paper, a goalprogramming model has been constructed to determine the ideal quantity extracting from stockpileand silos and a quality control model is inferred under the guidance of maximum theory ofdispersed number and practice methods are given to meet production demand, with which a coalmine has achieved a better tech-economic result.

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


    Bolbate, N


    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.

  6. 40 CFR 75.21 - Quality assurance and quality control requirements. (United States)


    ... 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... system according to the quality assurance and quality control procedures in appendix B of this part....


    Directory of Open Access Journals (Sweden)

    C. C. Fonte


    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.


    Directory of Open Access Journals (Sweden)

    Özlem KISAOĞLU


    Full Text Available Woven fabric quality depends on yarn properties at first, then weaving preparation and weaving processes. Defect control of grey and finished fabric is done manually on the lighted tables or automatically. Fabrics can be controlled by the help of the image analysis method. In image system the image of fabrics can be digitized by video camera and after storing controlled by the various processing. Recently neural networks, fuzzy logic, best wavelet packet model on automatic fabric inspection are developed. In this study the advantages and disadvantages of manual and automatic, on-line fabric inspection systems are given comparatively.

  9. Decision-Making Procedure and Decision Quality. (United States)

    Burleson, Brant R.; And Others


    Strongly confirmed the hypothesis that groups employing an interacting decision procedure would produce better decisions than groups employing procedures that are either nominal (Delphi) or "staticized" (individual judgments statistically pooled). Provides clear and consistent support for the value of social interaction in small group decision…

  10. Quality Control of EUVE Databases (United States)

    John, Linda M.


    The publicly accessible databases for the Extreme Ultraviolet Explorer (EUVE) include: the EUVE Archive Mailserver, the Center for EUV Astrophysics ftp site, the EUVE Guest Observer Mailserver, and the Astronomical Data System node. The EUVE Performance Assurance team is responsible for verifying that these public databases are working properly and that the public availability of EUVE data contained therein does not infringe any data rights which may have been assigned. In this paper, we describe the quality assurance (QA) procedures we have developed from approaching QA as a service organization; this approach reflects the overall EUVE philosophy of QA integrated into normal operating procedures, rather than imposed as an external, post-facto, control mechanism.


    Directory of Open Access Journals (Sweden)

    Orlov A. I.


    Full Text Available Controlling of statistical methods to ensure product quality is the special case of controlling organizational and economic methods of management. Today, controlling in the practice of management of Russian companies is understood as "the system of information-analytical and methodological support to achieve their goals." The controller is developing a decision-making rules, the head takes decisions on the basis of these rules. We proved the concept of "controlling of methods". Innovation in management is based, in particular, on the use of new adequate organizational-economic (as well as economicmathematical and statistical methods. Controlling in this area - is the development and application procedures of compliance management used and newly developed (implemented organizationaleconomic methods for the task. Thus, the methodology for controlling is of great practical value in any field in which the actions (operations must be carried out in accordance with certain rules (regulations, standards, guidelines, as in any such area in which we need to use development and application procedures of compliance management used and the newly established (implemented rules for solution of tasks assigned to the organization. In this article, we select a area of controlling as controlling quality, and we discuss its main issues. This is about controlling of organizational-economic methods to ensure product quality, especially about the statistical methods based on probability theory and mathematical statistics. We consider the analysis and synthesis of plans of statistical quality control, optimization options plans of statistical control, truncated plans. Are discussed the differences control plans provider and the consumer, the allocation of units formless (liquid, gas products, the selection of a random sample of the statistical quality control of products, lower estimate of the required sample size. It is established, that is not always necessary

  12. 7 CFR 58.335 - Quality control tests. (United States)


    ... 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...

  13. 7 CFR 58.928 - Quality control tests. (United States)


    ... 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...

  14. 7 CFR 58.642 - Quality control tests. (United States)


    ... 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...

  15. Procedure of quality control specific of patient treatment with VMAT (RAPIDARC) implemented in the HUGC Dr Negrin (Las Palmas); Procedimiento de control de calidad especifico de paciente para tratamientos con VMAT (RAPIDARC) implantado en el HUGC DR Negrin (Las Palmas)

    Energy Technology Data Exchange (ETDEWEB)

    Luque Japon, I.; Sanchez Carrascal, M.; Torres Pozas, S.; Marti Asenjo, J.; Madan Rodriguez, C.; Ruiz Egea, E.; Godoy Cazorla, J. I.; Martin Oliva, R.


    Following the introduction of the new RapidArc (Varian Medical Systems) technology to treat patients in our department, it became necessary to establish a protocol specific quality control of each. (Author)

  16. Elaboration and implementation of standard operational procedure for quality assurance of cone beam CT image in radiotherapy; Elaboracao e implementacao de procedimentos operacionais padrao para controle de qualidade da imagem CBCT em radioterapia

    Energy Technology Data Exchange (ETDEWEB)

    Bonatto, Larisse N.; Estacio, Daniela R.; Lopes, Juliane S.; Sansson, Angela; Duarte, Lucas O.; Sbaraini, Patricia; Silva, Ana M. Marques da; Streck, Elaine E., E-mail: [Pontificia Universidade Catolica do Rio Grande do Sul (PUC-RS), Porto Alegre, RS (Brazil)


    The objective of this article is to present the implementation of the quality Control of Cone Beam Computed Tomography (CBCT) image, generated by the On-Board Imager, integrated with the linear accelerator Trilogy. Standard operating procedures (POPs) have been developed based on the literature and manuals of the simulator object Catphan 504 and the On-Board Imager. The following POPs were developed: acquisition of the CBCT image; linearity of CT number; uniformity; spatial resolution; low contrast resolution; spatial linearity; thickness of the cut. The validation of the elaborated procedures was done from an experimental acquisition of the simulator object. The results obtained in the validation of the POPs are in compliance with the parameters established by the manufacturer of the simulator object, as well as those obtained in the acceptance of the On-Board Imager device.

  17. [Quality control in parasitology]. (United States)

    Vasallo Matilla, F


    Between 1990 and 1996 we coordinated a Quality Control (QC) Program in Parasitology directed to Public Health Institutions in Spain. Periodically, parasited specimens, mainly feces or blood, were sent to Microbiology Laboratories for identification. Each QC was accompanied by a short clinic and epidemiological information in order to help in the diagnostic approach. After the answers to the QC were received a bulletin that included the solution to the QC, comments on the several answers received and a chapter with parasitological themes related with the QC, was sent to each participating Laboratory. The bulletin was accompanied by a card that included a photograph and a short description of the organism object of the QC.

  18. Procedural justice and quality of life in compensation processes

    NARCIS (Netherlands)

    Elbers, N.A.; Akkermans, A.J.; Cuijpers, P.; Bruinvels, D.J.


    .001). Having trunk/back injury was negatively related to procedural justice (b = =-.25, p = .001). Whiplash injury and length of time involved in the claim process were not associated with any of the justice scales. Finally, procedural justice was found to be positively correlated with quality of l

  19. 46 CFR 164.019-13 - Production quality control requirements. (United States)


    ... 46 Shipping 6 2010-10-01 2010-10-01 false Production quality control requirements. 164.019-13....019-13 Production quality control requirements. (a) General. Each component manufacturer shall establish procedures for maintaining quality control of the materials used in production,...

  20. 7 CFR 58.523 - Laboratory and quality control tests. (United States)


    ... 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...

  1. Use of the gamma-ray absorption technique as a quality control procedure in the manufacture of powder metal shaped charge liners

    CSIR Research Space (South Africa)

    Lawrie, JJ


    Full Text Available The use of the gamma-ray absorption technique as a tool in evaluating the quality of manufactured powder metal liners was investigated. With powder metal liners, it is not only of interest to know whether the liner conforms geometrically...

  2. 血液流变仪检测系统过程能力与质量控制的研究%Investigations of Process Capabilities and Quality Control Procedures of Blood Rheology Detection System

    Institute of Scientific and Technical Information of China (English)

    黄永富; 许文荣; 陈冬


    Objective To explore the application of process capability research on method evaluation and quality control pro cedures selection of the items of blood theology detection system. Methods According to the methods which were introduced in the paper《Research advances in process capabilities and performances of quantitive items in clinical laboratories》, we applied the appropriate evaluation methods of the process capabilities to access the process capabilities of the direct detection items of clinical blood theology,and simultaneously according to the parameters of the characteristics of the method performances, we applied the design tool softwares on quality control procedures to scheme out the suitable and personal quality control procedures rationally which were based on their process capabilities. Results We measured out many parameters of the process capabilities of the eight direct detection items of ZL6000 theology detection system with the self— made blood theology quality controls which had three levels (high,middle,low). we accessed and categorized the process capabilities of the direct detection items of blood theology into five groups ranged from A+ to D. Group A+ to D accounts for 33.33%、20.83%、25.00%、16.67%、4. 17% respectively. According to the parameters of the performance characteristics of the detection methods of the items of blood theology, we drew the the process capability analytic charts, 6 sigma metric decision charts, power functional charts and operational process specification charts with the corresponding software simultaneously. We established the suitable and personal quality control procedures of the items and meanwhile put forward the maintenance and improvement measures of process capabilities and quality control procedures of the items finally. Conclusion The study on process capabilities of the items of blood theology, which has important and significant meaning to design and selection of the quality control

  3. European wind turbine testing procedure developments. Task 2: Power quality

    DEFF Research Database (Denmark)

    Sørensen, Poul Ejnar; Friis Pedersen, Troels; Gerdes, G.;


    The present report describes the work done in the power quality subtask of the European Wind Turbine Testing Procedure Developments project funded by the EU SMT program. The objective of the power quality subtask has been to make recommendations andprovide background for new standards...... for measurement and testing of wind turbine power quality. The focus in the work has been to support the ongoing standardisation work in IEC with a new standard IEC61400-21 for measurement and assessment of powerquality characteristics of grid connected wind turbines. The work has also been based on the power...... quality measuremnet procedure in the Measnet cooperation of European test stations for wind turbines. The first working item of the project has been toverify the state of the art of the measurement procedures by analyses and comparisons of the measurements and data processing software of the participating...

  4. Quality control of seasonal influenza vaccines. (United States)

    Mandušić Nazor, Tamara; Pipić Kosanović, Marta; Tomić, Siniša


    The purpose of seasonal influenza vaccination is to prevent its spread. The vaccines contain strains of the influenza virus recommended and approved for a particular season. Just like any other medicinal product, all vaccines require marketing approval. Batches of approved vaccines are extensively tested by the manufacturers and additionally controlled by the approving authorities, which issue the quality control certificates. This article not only to describes the legal background of quality control, but also how control test results obtained by a Croatian official control laboratory are compared to manufacturer's results. We have found that testing results can slightly differ depending on methods/analytical procedures used in different laboratories. This investigation has also shown how important it is to test finished medicinal products, independently of testing at intermediate stages, and how retesting by control authorities ensures that marketed vaccines meet quality standards.

  5. Posttranslational modification and quality control. (United States)

    Wang, Xuejun; Pattison, J Scott; Su, Huabo


    Protein quality control functions to minimize the level and toxicity of misfolded proteins in the cell. Protein quality control is performed by intricate collaboration among chaperones and target protein degradation. The latter is performed primarily by the ubiquitin-proteasome system and perhaps autophagy. Terminally misfolded proteins that are not timely removed tend to form aggregates. Their clearance requires macroautophagy. Macroautophagy serves in intracellular quality control also by selectively segregating defective organelles (eg, mitochondria) and targeting them for degradation by the lysosome. Inadequate protein quality control is observed in a large subset of failing human hearts with a variety of causes, and its pathogenic role has been experimentally demonstrated. Multiple posttranslational modifications can occur to substrate proteins and protein quality control machineries, promoting or hindering the removal of the misfolded proteins. This article highlights recent advances in posttranslational modification-mediated regulation of intracellular quality control mechanisms and its known involvement in cardiac pathology.

  6. Procedure Redesign Methods : E3-Control: a redesign methodology for control procedures

    NARCIS (Netherlands)

    Liu, J.; Hofman, W.J.; Tan, Y.H.


    This chapter highlights the core research methodology, e3-control, that is applied throughout the ITAIDE project for the purpose of control procedure redesign. We present the key concept of the e3-control methodology and its technical guidelines. Based on the output of this chapter, domain experts

  7. Procedure Redesign Methods : E3-Control: a redesign methodology for control procedures

    NARCIS (Netherlands)

    Liu, J.; Hofman, W.J.; Tan, Y.H.


    This chapter highlights the core research methodology, e3-control, that is applied throughout the ITAIDE project for the purpose of control procedure redesign. We present the key concept of the e3-control methodology and its technical guidelines. Based on the output of this chapter, domain experts m

  8. Control by quality: proposition of a typology. (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

  9. General aviation fuel quality control (United States)

    Poitz, H.


    Quality control measures for aviation gasoline, and some of the differences between quality control on avgas and mogas are discussed. One thing to keep in mind is that with motor gasoline you can always pull off to the side of the road. It's not so easy to do in an airplane. Consequently, there are reasons for having the tight specifications and the tight quality control measures on avgas as compared to motor gasoline.

  10. Quality control in gastrointestinal surgery. (United States)

    Ramírez-Barba, Ector Jaime; Arenas-Moya, Diego; Vázquez-Guerrero, Arturo


    We analyzed the Mexican legal framework, identifying the vectors that characterize quality and control in gastrointestinal surgery. Quality is contemplated in the health protection rights determined according to the Mexican Constitution, established in the general health law and included as a specific goal in the actual National Development Plan and Health Sector Plan. Quality control implies planning, verification and application of corrective measures. Mexico has implemented several quality strategies such as certification of hospitals and regulatory agreements by the General Salubrity Council, creation of the National Health Quality Committee, generation of Clinical Practice Guidelines and the Certification of Medical Specialties, among others. Quality control in gastrointestinal surgery must begin at the time of medical education and continue during professional activities of surgeons, encouraging multidisciplinary teamwork, knowledge, abilities, attitudes, values and skills that promote homogeneous, safe and quality health services for the Mexican population.

  11. Procedure for making mannequins tailor for image quality control of PET by 3D printing systems; Procedimiento para la fabricacion de maniquies a medida, para control de calidad de imagen PET, mediante sistemas de impresion 3D

    Energy Technology Data Exchange (ETDEWEB)

    Collado Chamorro, P. M.; Saez Beltran, F.; Diaz Pascual, V.; Benito Bejarado, M. A.; Sanz Freire, C. J.; Lopo Casqueiro, N.; Gonzalez Fernandez, M. P.; Lopez de Gamarra, M. S.


    There is a software free both for be the processes of modeling of the objects 3D to split of medical images, as for convert said modeling to file ready for be read and executed by the 3D printers (sequence or slicer). This lets make mannequins of Control of quality with a investment minimum. In this work is built a mannequin of brain refillable to measurement for be used in studies PET. (Author)

  12. Absolute absorbed dose measurements with an array of ionization chambers as part of a routine procedure of quality control for the VMAT technique; Medidas de dosis absorbida absoluta con un array de camaras de ionizacion como parte de un procedimiento rutinario de control de calidad para la tecnica VMAT

    Energy Technology Data Exchange (ETDEWEB)

    Clemente Gutierrez, F.; Cabello Murillo, E.; Ramirez Ros, J. C.; Casa de Julian, M. A. de la


    Arcotheraphy techniques volumetric modulated (VMAT) treatments involve continuous variation of the gantry rotation speed, positions of the sheets and dose rate. Since all treatments are administered by continuous arcs, these techniques require quality control procedures to ensure quick and easy constancy of the calibration factor (total absorbed dose) for any gantry angle. We report here a simple method of quality control for the measurement of the calibration factor using an array of ionization chambers. The measurements were performed on a unit of 6 MV Elekta Synergy with VMAT, belonging to the Radiation Oncology service of the Defense Central Hospital Gomez Ulla.

  13. Frontiers in statistical quality control

    CERN Document Server

    Wilrich, Peter-Theodor


    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.

  14. Quality control and quality assurance of micromegas readout boards for the ATLAS New Small Wheel

    CERN Document Server

    Nanda, Amit


    The resistive anode boards of the Micromegas detectors for ATLAS NSW upgrade, will be produced in industries. The anode boards will be thoroughly evaluated at CERN following a detailed quality control and quality assurance (QA/QC) procedure. The report describes thoroughly the procedures and the design of a small QC tool for easier measurements of electrical properties of the readout boards.

  15. 7 CFR 58.442 - Laboratory and quality control tests. (United States)


    ... 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....

  16. 10 CFR 26.137 - Quality assurance and quality control. (United States)


    ... 10 Energy 1 2010-01-01 2010-01-01 false Quality assurance and quality control. 26.137 Section 26....137 Quality assurance and quality control. (a) Quality assurance program. Each licensee testing... metabolites. (b) Performance testing and quality control requirements for validity screening tests....

  17. [Quality controls in medical mycology]. (United States)

    Kauffmann-Lacroix, C; Cassaing, S; Bessieres, M-H; Mayet, D; Linas, M-D; Roques, C


    The Quality Management System in medical mycology refers to the systematic monitoring with internal and external quality controls: it needs to be organized in the laboratory. ISO 15189 standard is not precise in how to demonstrate the correctness of tests, in terms of frequency and requirements for quality controls QC. That's why the COFRAC, the French Accreditation Committee has published guides to which we should refer. The laboratory has to apply internal Quality Control Programs. They consist of various tests to check the reagents including the culture media. Reference strains have to be provided and preparations of homemade reagents are needed, because few are commercialized. Maintaining the competence of the technical staff through identification of unknown strains is also required. In the fungal serology field, home made antibodies with pooled sera or antigen controls are needed. This monitoring has to follow the recommandations from the Cofrac technical guide LAB GTA 06. For quantitative analysis, the Levey-Jennings chart is a graph with quality control data plotted on to give a visual indication. Some external QC references, besides the national quality control AFSSAPS, are available. Data evaluation, corrective actions in case of out of range results and preventive actions have to be determined in the Quality System documents and presented in the annual management review. Copyright © 2011. Published by Elsevier SAS.

  18. [Quality control of plant extract]. (United States)

    Shao, Yun-dong; Gao, Wen-yuan; Liu, Dan; Jia, Wei; Duan, Hong-Quan; Zhang, Tie-jun


    The current situation of plant extract in domestic and international market was analyzed in the paper. The quality control of 20 plant extracts which have reasonably good sales in USA market was compared and analyzed. The analysis of the quality control of six plant extracts indicated that there were two main reasons leading to the varied quality specifications among different suppliers. One reason was that the plant species utilized by different companies were different. The other reason was that the extraction processes were different among different production plants. Comparing with the significant international suppliers of plant extracts, the product quality of Chinese companies were not satisfactory. It was suggested that chromatography and chromatographic fingerprint techniques should be applied to improve the quality control standard of plant extract in our country.

  19. The determinants of quality in procedural rural medical care. (United States)

    Hays, Richard B; Veitch, Craig; Evans, Rebecca J


    A substantial proportion of health services for rural Australians is provided in rural health facilities by rurally based generalist health professionals. These services include procedural care within smaller rural hospitals, where teams of health professionals--medical practitioners, nurses and other support staff--work in teams to deliver a range of procedural services, both elective and urgent, that reduce the need for rural people to travel to major centres. Recent debate over the training of rural medical practitioners has focused on whether or not they need to provide procedural services, because current health service management policy appears to support the rationalisation and centralisation of service delivery in larger centres to contain costs and ensure high quality. Hence there is an assumption, without much evidence, that the quality of care in rural hospitals is lower than that provided in larger urban hospitals, although there is little agreement on just what aspects of care should be measured to indicate its quality. This article reports an exploration of multiple perspectives on what constitutes quality of care in rural procedural medical practice, as part of a broader study of the quality of care of a series of real clinical cases. During the collection of a series of 91 individual patient cases involving anaesthetic, obstetric or surgical procedures conducted in small rural hospitals, interviews were conducted with several participants in each case: the rural doctors; rural nurses; the rural patients; and family members of those patients. In addition to issues pertaining to each case, interviews explored the perspectives of individuals in each group on the broader question of what constitutes quality of care in a general sense. Their comments were subjected to qualitative thematic analysis using Atlas.ti software (Muhr T, ATLAS.ti Scientific Software Development; Berlin, Germany). In order to consider how to measure rural health care, the

  20. Concrete and steel construction quality control and assurance

    CERN Document Server

    El-Reedy, Mohamed A


    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...

  1. Quality assurance standards for purchasing and inventory control. (United States)

    Soares, D P


    A process is described for quality assurance in pharmaceutical purchasing and inventory control. A quality assurance program should ensure that quality drugs are purchased at the lowest price, drug products are available when needed, the system is managed efficiently, internal controls are provided, drug products are stored under appropriate conditions, and laws, regulations, accreditation standards, and procedures are followed. To meet these objectives, product quality, vendor performance, the department's system of internal controls, purchasing data, and storage conditions should be monitored. A checklist for evaluating purchasing and inventory practices and a sample audit form listing quality assurance criteria, standards, procedures, and recommended actions are provided. A quality assurance program for pharmaceutical purchasing and inventory control should define institution-specific criteria and standards and use these standards for continual evaluation of all aspects of the purchasing and inventory control system. Documentation of quality assurance activities should be provided for use by the purchasing department, hospital administration, and regulatory bodies.

  2. SAQC: SNP Array Quality Control

    Directory of Open Access Journals (Sweden)

    Li Ling-Hui


    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 (

  3. 47 CFR 11.16 - National Control Point Procedures. (United States)


    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false National Control Point Procedures. 11.16 Section 11.16 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EMERGENCY ALERT SYSTEM (EAS) General § 11.16 National Control Point Procedures. The National Control Point Procedures are written...

  4. Environmental Quality Information Analysis Center (EQIAC) operating procedures handbook

    Energy Technology Data Exchange (ETDEWEB)

    Walsh, T.E. (Florida Univ., Gainesville, FL (United States)); Das, S. (Oak Ridge National Lab., TN (United States))


    The Operating Procedures Handbook of the Environmental Quality Information Analysis Center (EQIAC) is intended to be kept current as EQIAC develops and evolves. Its purpose is to provide a comprehensive guide to the mission, infrastructure, functions, and operational procedures of EQIAC. The handbook is a training tool for new personnel and a reference manual for existing personnel. The handbook will be distributed throughout EQIAC and maintained in binders containing current dated editions of the individual sections. The handbook will be revised at least annually to reflect the current structure and operational procedures of EQIAC. The EQIAC provides information on environmental issues such as compliance, restoration, and environmental monitoring do the Air Force and DOD contractors.

  5. Frontiers in statistical quality control

    CERN Document Server

    Wilrich, Peter-Theodor


    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.

  6. 7 CFR 58.733 - Quality control tests. (United States)


    ... 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...

  7. Harmonisation Initiatives of Copernicus Data Quality Control (United States)

    Vescovi, F. D.; Lankester, T.; Coleman, E.; Ottavianelli, G.


    The Copernicus Space Component Data Access system (CSCDA) incorporates data contributions from a wide range of satellite missions. Through EO data handling and distribution, CSCDA serves a set of Copernicus Services related to Land, Marine and Atmosphere Monitoring, Emergency Management and Security and Climate Change. The quality of the delivered EO products is the responsibility of each contributing mission, and the Copernicus data Quality Control (CQC) service supports and complements such data quality control activities. The mission of the CQC is to provide a service of quality assessment on the provided imagery, to support the investigation related to product quality anomalies, and to guarantee harmonisation and traceability of the quality information. In terms of product quality control, the CQC carries out analysis of representative sample products for each contributing mission as well as coordinating data quality investigation related to issues found or raised by Copernicus users. Results from the product analysis are systematically collected and the derived quality reports stored in a searchable database. The CQC service can be seen as a privileged focal point with unique comparison capacities over the data providers. The comparison among products from different missions suggests the need for a strong, common effort of harmonisation. Technical terms, definitions, metadata, file formats, processing levels, algorithms, cal/val procedures etc. are far from being homogeneous, and this may generate inconsistencies and confusion among users of EO data. The CSCDA CQC team plays a significant role in promoting harmonisation initiatives across the numerous contributing missions, so that a common effort can achieve optimal complementarity and compatibility among the EO data from multiple data providers. This effort is done in coordination with important initiatives already working towards these goals (e.g. INSPIRE directive, CEOS initiatives, OGC standards, QA4EO

  8. Quality assurance and statistical control

    DEFF Research Database (Denmark)

    Heydorn, K.


    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...... 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...

  9. Frontiers in statistical quality control

    CERN Document Server

    Wilrich, Peter-Theodor


    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.

  10. 12 CFR 1731.5 - Internal controls, procedures, and training. (United States)


    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Internal controls, procedures, and training... HOUSING AND URBAN DEVELOPMENT SAFETY AND SOUNDNESS MORTGAGE FRAUD REPORTING § 1731.5 Internal controls, procedures, and training. An Enterprise shall establish adequate and efficient internal controls...

  11. Revisiting the Procedures for the Vector Data Quality Assurance in Practice (United States)

    Erdoğan, M.; Torun, A.; Boyacı, D.


    of spatial data quality concepts into developments and application requires existence of conceptual, logical and most importantly physical existence of data model, rules and knowledge of realization in a form of geo-spatial data. The applicable metrics and thresholds are determined on this concrete base. This study discusses application of geo-spatial data quality issues and QA (quality assurance) and QC procedures in the topographic data production. Firstly we introduce MGCP (Multinational Geospatial Co-production Program) data profile of NATO (North Atlantic Treaty Organization) DFDD (DGIWG Feature Data Dictionary), the requirements of data owner, the view of data producers for both data capturing and QC and finally QA to fulfil user needs. Then, our practical and new approach which divides the quality into three phases is introduced. Finally, implementation of our approach to accomplish metrics, measures and thresholds of quality definitions is discussed. In this paper, especially geometry and semantics quality and quality control procedures that can be performed by the producers are discussed. Some applicable best-practices that we experienced on techniques of quality control, defining regulations that define the objectives and data production procedures are given in the final remarks. These quality control procedures should include the visual checks over the source data, captured vector data and printouts, some automatic checks that can be performed by software and some semi-automatic checks by the interaction with quality control personnel. Finally, these quality control procedures should ensure the geometric, semantic, attribution and metadata quality of vector data.

  12. Quality Assurance/Quality Control Jobs (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.

  13. Forward SCT Module Assembly and Quality Control at IFIC Valencia

    CERN Document Server

    Mitsou, V A; Civera, J V; Costa, M J; Escobar, C; Fuster, J; García, C; García-Navarro, J E; González, F; González-Sevilla, S; Lacasta, C; Llosá, G; Martí i García, S; Miñano, M; Modesto, P; Nácher, J; Rodríguez-Oliete, R; Sánchez, F J; Sospedra, L; Strachko, V


    This note discusses the assembly and the quality control tests of 282 forward detector modules for the ATLAS Semiconductor Tracker assembled at the Instituto de Fisica Corpuscular (IFIC) in Valencia. The construction and testing procedures are outlined and the laboratory equipment is briefly described. Emphasis is given on the module quality achieved in terms of mechanical and electrical stability.

  14. Quality Control Review of the Defense Logistics Agency Audit Organization (United States)


    all auditors are required to follow, and established an internal quality assurance division that performs ongoing, periodic assessments of work...audit organization performing audits or attestation engagements or both have an appropriate internal quality control system in place and undergo an...2010, the DLA OIG addressed our recommendation to implement official policies and procedures, which all auditors are required to follow. The DLA

  15. Quality control of systems of portal imaging; Control de calidad de sistemas de imagen portal

    Energy Technology Data Exchange (ETDEWEB)

    Olasolo Alonso, J.; Martin Albina, M. L.; Otal Palacin, A.; Fuentemilla Urio, N.; Miquelez Alonso, S.; Pellejero Pellejero, S.; Maneru Camara, F.; Lozares Cordero, S.; Rubio Arroniz, A.


    The importance of accuracy and reproducibility of the positioning of the patient for the radiotherapy treatment, makes key the image quality of the image device portal used for the verification of such positioning. the objective of this work is the implementation of a procedure of quality control that easily and quickly verify the main parameters of image quality of the EPID. (Author)

  16. UPLC®-RAD the new standard in quality control of PET radiopharmaceutical

    NARCIS (Netherlands)

    Maas, B.; Zijlma, R.; Bannink, A.; Lub-De Hooge, M.; Elsinga, P.H.; Dierckx, R.A.J.O.; Boersma, H.H.; Luurtsema, G.


    Objectives: Good Manufacturing Practice (GMP) compliant productions require validated, quality control procedures of the radiopharmaceutical. Quality control of the final product is conventionally performed by High Performance Liquid Chromatography (HPLC) with UV and radioactivity (RAD) detection. T

  17. Development of quality assurance procedures for production of sealed radiation source

    CERN Document Server

    Nam, J H; Cho, W K; Han, H S; Hong, S B; Kim, K H; Kim, S D; Lee, Y G; Lim, N J


    The quality assurance procedures for sealed radiation sources production using HANARO and RIPF have been developed. The detailed quality assurance procedures are essential to manage the whole work process effectively and ensure the quality of the produced sealed sources. Through applying this quality assurance procedures to the entire production works of the sealed radiation sources, it is expected that the quality of the products, the safety of the works and the satisfaction of the customers will be increased.

  18. A Total Quality-Control Plan with Right-Sized Statistical Quality-Control. (United States)

    Westgard, James O


    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.

  19. Impacts of Climate Policy on Regional Air Quality, Health, and Air Quality Regulatory Procedures (United States)

    Thompson, T. M.; Selin, N. E.


    Both the changing climate, and the policy implemented to address climate change can impact regional air quality. We evaluate the impacts of potential selected climate policies on modeled regional air quality with respect to national pollution standards, human health and the sensitivity of health uncertainty ranges. To assess changes in air quality due to climate policy, we couple output from a regional computable general equilibrium economic model (the US Regional Energy Policy [USREP] model), with a regional air quality model (the Comprehensive Air Quality Model with Extensions [CAMx]). USREP uses economic variables to determine how potential future U.S. climate policy would change emissions of regional pollutants (CO, VOC, NOx, SO2, NH3, black carbon, and organic carbon) from ten emissions-heavy sectors of the economy (electricity, coal, gas, crude oil, refined oil, energy intensive industry, other industry, service, agriculture, and transportation [light duty and heavy duty]). Changes in emissions are then modeled using CAMx to determine the impact on air quality in several cities in the Northeast US. We first calculate the impact of climate policy by using regulatory procedures used to show attainment with National Ambient Air Quality Standards (NAAQS) for ozone and particulate matter. Building on previous work, we compare those results with the calculated results and uncertainties associated with human health impacts due to climate policy. This work addresses a potential disconnect between NAAQS regulatory procedures and the cost/benefit analysis required for and by the Clean Air Act.

  20. 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


    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...

  1. A review of reinforcement control procedures. (United States)

    Thompson, Rachel H; Iwata, Brian A


    A demonstration of the effects of reinforcement requires comparison of response rates in the presence of a contingency with those in another condition that controls for the influence of extraneous variables. We describe several control conditions that have been used in evaluating the effects of positive and negative reinforcement. The methodological rigor and practical utility of each type of control condition are discussed, and recommendations for the use of these conditions are presented.

  2. 21 CFR 123.11 - Sanitation control procedures. (United States)


    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Sanitation control procedures. 123.11 Section 123...) FOOD FOR HUMAN CONSUMPTION FISH AND FISHERY PRODUCTS General Provisions § 123.11 Sanitation control procedures. (a) Sanitation SOP. Each processor should have and implement a written sanitation...

  3. A Combined Forecast-Inventory Control Procedure for Spare Parts

    NARCIS (Netherlands)

    Heuts, R.M.J.; Strijbosch, L.W.G.; van der Schoot, E.H.M.


    The interaction between forecast and inventory control has been under-exposed in the literature. This paper introduces a combined forecast-inventory control procedure that is appropriate especially for the lumpy demand character of spare parts. The proposed procedure is succesfully implemented in

  4. Simplified procedure for controlling pressure distribution of a scramjet combustor

    Directory of Open Access Journals (Sweden)

    Cui Tao


    Full Text Available Scramjet engines are used at extreme temperatures and velocity. New control problems involving distributed parameter control have been found concerning investigations of the control of scramjet engines whose physical states are spatially interacted. Succeeding the existing theoretical studies on the distributed parameter control for scramjet engines, this paper puts forward a simplified distributed parameter control approach for scramjet engines aimed at engineering application. The simplified control procedure uses the classical proportional-integral (PI compensation to control the target pressure distribution of scramjet engines, which is effective and applicable for practical implements. Simulation results show the validation of the simplified distributed parameter control procedure.

  5. Videoregistration of surgery should be used as a quality control. (United States)

    Koninckx, Philippe R


    Quality control of medical treatment is strictly organized and supervised. Efficacy and safety have to be proven in large randomized controlled trials, which need ethical review board approval. Content and quality of marketed drugs is controlled by industry and government. After market introduction, postmarketing surveillance is organized. This quality control is necessary to obtain reliable and predictable results and to detect even rare adverse events. Quality control of surgical treatments is close to nonexistent for individual surgical procedures and, therefore, rare adverse events cannot be detected by the sheer number of interventions analyzed. An ethical review board is rarely consulted before a new procedure is attempted or introduced. Although the outcome of surgery is surgeon and environment dependent, the only estimation of quality is results and complication rates. These, however, reflect publications by dedicated groups or data from surveys that do not necessarily reflect reality accurately. Complications are known to be under-reported whereas surveys reflect mean quality only. For most complication rates, it remains unknown which were preventable mistakes and which were unavoidable, random accidents. This huge discrepancy in quality control of medical and surgical therapies can be understood by specifics of each type of therapy. Strict quality control in surgery is, moreover, difficult to organize given that the outcome varies with the surgeon and surgical environment. Systematic videotaping of entire interventions has the potential of providing a quality control of surgery. This, moreover, has become technically feasible at low cost. In conclusion, we need to reflect and organize quality control in surgery. Systematic videotaping of entire procedures seems to be an inexpensive and easy way to organize this control.

  6. Family Control and Earnings Quality

    Directory of Open Access Journals (Sweden)

    Carolina Bona Sánchez


    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

  7. Quality control in breast tomosynthesis

    Energy Technology Data Exchange (ETDEWEB)

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


    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)

  8. 40 CFR 51.359 - Quality control. (United States)


    ... 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...

  9. Quality control in FISH as part of a laboratory's quality management system. (United States)

    Hastings, Ros


    Quality control in the laboratory setting requires the establishment of a quality management system (QMS) that covers training, standard operating procedures, internal quality control, validation of tests, and external quality assessment (EQA). Laboratory accreditation through inspection by an external body is also desirable as this provides an effective procedure for assuring quality and also reassures the patient that the laboratory is working to acceptable international standards. The implementation of fluorescence in situ hybridisation (FISH) in the routine diagnostic laboratory requires rigorous quality control with attention to when it is appropriate to apply the technology, a systematic approach to the validation of probes, policies and procedures documenting the analytical validity of all FISH tests performed, technical procedures involved, and a comprehensive means of reporting results. Knowledge of the limitations of any FISH test is required in relation to the probe and/or tissue being examined, since errors of analysis and interpretation can result in incorrect patient management. A structured QMS with internal quality control and regular audits will minimise the error rate.


    Directory of Open Access Journals (Sweden)

    V. Z. Stetsyuk


    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.

  11. Quality Control of Observation Data by the Geomagnetic Network of China


    Suqin Zhang; Changhua Fu; Yufei He; Dongmei Yang; Qi Li; Xudong Zhao; Jianjun Wang


    Data quality is an important guarantee for scientific research. The Geomagnetic Network of China (GNC) controls data quality for all observatories under the jurisdiction of China Earthquake Administration. This paper presents the quality control content and methods; quality evaluation and feedback procedures; and the process for publishing data sets via the GNC website. Technical challenges and proposed quality assurance procedures for future GNC data sets are described.

  12. Weight Gain Through Self-Control Procedures (United States)

    Gulanick, Nancy; And Others


    Underweight subjects were assigned to either a self-reinforcement condition, a self-punishment condition, or to a discussion/reflection control condition. The subjects received one treatment session per week over a five-week period. After treatment, the self-reinforcement groups gained significantly more pounds (kilograms) than either of the other…

  13. Medicare's Hospital Compare quality reports appear to have slowed price increases for two major procedures. (United States)

    Dor, Avi; Encinosa, William E; Carey, Kathleen


    Previous research has found that Hospital Compare, Medicare's public reporting initiative, has had little impact on patient outcomes. However, little is known about the initiative's impact on hospital prices, which may be significant because private insurers are generally well positioned to respond to quality information when negotiating prices with hospitals. We estimated difference-in-differences models of the effects of Hospital Compare quality reporting on transaction prices for two major cardiac procedures, coronary artery bypass graft (CABG) and percutaneous coronary intervention (PCI). States that had mandated their own public reporting systems before the implementation of Hospital Compare formed the control group. We found that prices for these procedures continued to increase overall after the initiation of Hospital Compare quality scores, but the rate of increase was significantly lower in states with no quality reporting metrics of their own before Hospital Compare, when compared to the control states (annual rates of increase of 4.4 percent versus 8.7 percent for PCI, and 3.9 percent versus 10.6 percent for CABG, adjusted for overall inflation). This finding implies that Hospital Compare provided leverage to purchasers in moderating price increases, while adding competitive pressures on hospitals. Providing accurate quality information on both hospitals and health plans could benefit consumers.

  14. Applying GPS to check horizontal control quality

    Directory of Open Access Journals (Sweden)

    Jakub Vincent


    Full Text Available GPS technologies can also be used for check quality in available horizontal point set with coordinates CJ of the frame S-JTSK. When survey and setting-out tasks should be performed in certain area, one can found in it allways some points of the fundamental and detail state controls. To use these points for some actual aims, it is necessary to investigate their compatibility (among the point mark positions and the point coordinate of control points. This can be done using GPS surveying that may be at the same time employed to determine the new point in the relevant area.Principle of quality investigatingf an existing control is founded on determination of point coordinates CJt from GPS measurements. Then, based on discrepancies among the "official" netpoint coordinates CJ and coordinates CJt "given by GPS", it can be estimated the degree and the real compatibility dislocations in the network structure of the existing points.Realisation procedure for the introduced investigation is demonstrated on GPS checking (by SOKKIA STRATUS receivers horizontal control for reconstruction of a railway bridge on river Bodrog in East Slovakia.It can be shown from the results in Table 3, that points P3 and P7 are useless due to their incompatibility (inconsistency in the inspected point set. For other 7 points (Table 7 the average measure of incompatibility reads 9.8 mm that make possible applying these points for precise setting-out

  15. A method of automatic control procedures cardiopulmonary resuscitation (United States)

    Bureev, A. Sh.; Zhdanov, D. S.; Kiseleva, E. Yu.; Kutsov, M. S.; Trifonov, A. Yu.


    The study is to present the results of works on creation of methods of automatic control procedures of cardiopulmonary resuscitation (CPR). A method of automatic control procedure of CPR by evaluating the acoustic data of the dynamics of blood flow in the bifurcation of carotid arteries and the dynamics of air flow in a trachea according to the current guidelines for CPR is presented. Evaluation of the patient is carried out by analyzing the respiratory noise and blood flow in the interspaces between the chest compressions and artificial pulmonary ventilation. The device operation algorithm of automatic control procedures of CPR and its block diagram has been developed.

  16. Internal quality control: best practice. (United States)

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


    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.

  17. [Quality control in microbiology (author's transl)]. (United States)

    Lamanna, A


    The microbiology quality control importance is emphasized and some particular problems that quality control presents in microbiology are also indicated. There are two types of microbiology quality control as well as for hematology and chemical chemistry: collective quality control, between more laboratories, and individual quality control, in the sphere of each laboratory. A.M.O.I. (Associazione Microbiologi Ospedalieri Italiani) and I.S.V.T. (Istituto Sieroterapico Vaccinogeno Toscano) Sclavo collaborating, have organized a collective quality control between laboratories of different hospitals during the year 1974 and 1975. The results of this control are reported. Although preliminary, they indicate practical importance of microbiology control. During 1975, in fact, the pathogens isolated have been in high percentage than 1976. At last, the future quality control's program aiming at methods's standardization and technical, methodical instructions is indicated.

  18. 33 CFR 385.21 - Quality control. (United States)


    ... 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...

  19. 7 CFR 930.44 - Quality control. (United States)


    ... 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...

  20. 7 CFR 981.42 - Quality control. (United States)


    ... 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...

  1. Six Sigma Quality Management System and Design of Risk-based Statistical Quality Control. (United States)

    Westgard, James O; Westgard, Sten A


    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.

  2. Stepwise multiple test procedures and control of directional errors



    One of the most difficult problems occurring with stepwise multiple test procedures for a set of two-sided hypotheses is the control of direc-tional errors if rejection of a hypothesis is accomplished with a directional decision. In this paper we generalize a result for so-called step-down procedures derived by Shaffer to a large class of stepwise or closed multiple test procedures. In a unifying way we obtain results for a large class of order statistics procedures includin...

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

    NARCIS (Netherlands)

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


    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 statisti

  4. In-Trail Procedure Air Traffic Control Procedures Validation Simulation Study (United States)

    Chartrand, Ryan C.; Hewitt, Katrin P.; Sweeney, Peter B.; Graff, Thomas J.; Jones, Kenneth M.


    In August 2007, Airservices Australia (Airservices) and the United States National Aeronautics and Space Administration (NASA) conducted a validation experiment of the air traffic control (ATC) procedures associated with the Automatic Dependant Surveillance-Broadcast (ADS-B) In-Trail Procedure (ITP). ITP is an Airborne Traffic Situation Awareness (ATSA) application designed for near-term use in procedural airspace in which ADS-B data are used to facilitate climb and descent maneuvers. NASA and Airservices conducted the experiment in Airservices simulator in Melbourne, Australia. Twelve current operational air traffic controllers participated in the experiment, which identified aspects of the ITP that could be improved (mainly in the communication and controller approval process). Results showed that controllers viewed the ITP as valid and acceptable. This paper describes the experiment design and results.


    Directory of Open Access Journals (Sweden)

    B.P. Mahesh


    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.

  6. Optimisation of product quality and minimisation of its variation in climate controlled operations

    NARCIS (Netherlands)

    Verdijck, G.J.C.; Straten, van G.; Preisig, H.A.


    An optimisation procedure is presented for direct control of product quality of agro-material and minimisation of its quality variation. The procedure builds on a previously presented model structure, which is briefly reviewed, together forming a methodological framework for direct product quality c

  7. Optimisation of product quality and minimisation of its variation in climate controlled operations

    NARCIS (Netherlands)

    Verdijck, G.J.C.; Straten, van G.; Preisig, H.A.


    An optimisation procedure is presented for direct control of product quality of agro-material and minimisation of its quality variation. The procedure builds on a previously presented model structure, which is briefly reviewed, together forming a methodological framework for direct product quality

  8. Protocol for quality control in radio guided surgery procedures for detection and removal of sentinel node and non palpable lesions; Protocolo de control de calidad para procedimientos de cirugia radioguiada para deteccion y extirpacion de ganglio centinela y de lesiones no palpables

    Energy Technology Data Exchange (ETDEWEB)

    Prieto Moran, D.; Sanchez Noriega, K.; Rodriguez Meijide, P.


    In this work the process for the detection and/or removal of the sentinel lymph node and nonpalpable lesions has been optimized. For the latter, a {sup 1}25 I, seed an isotope that is not usually used for this purpose, is employed. It was recycled from radiotherapy treatments surpluses, having requested the necessary authorizations. A detailed procedure for the management, storage, transport and sterilization of the {sup 1}25 I seed in the hospital has been developed. A custom protocol has been defined for quality control of intraoperative probes with different tests, providing methods, frequencies, tolerances, etc. The overall result is an improvement of the process and a decrease of the inconveniences for the patient. (Author)

  9. The medical practice of euthanasia in Belgium and The Netherlands: legal notification, control and evaluation procedures. (United States)

    Smets, Tinne; Bilsen, Johan; Cohen, Joachim; Rurup, Mette L; De Keyser, Els; Deliens, Luc


    To describe and compare current legal procedures for notifying, controlling and evaluating (NCE-procedures) euthanasia in Belgium and the Netherlands, and to discuss the implications for a safe and controllable euthanasia practice. We systematically studied and compared official documents relating to the Belgian and the Dutch NCE-procedures for euthanasia. In both countries, physicians are required to notify their cases to a review Committee, stimulating them to safeguard the quality of their euthanasia practice and to make societal control over the practice of euthanasia possible. However, the procedures in both countries differ. The main differences are that the Dutch notification and control procedures are more elaborate and transparent than the Belgian, and that the Belgian procedures are primarily anonymous, whereas the Dutch are not. Societal evaluation is made in both countries through the Committees' summary reports to Parliament. Transparent procedures like the Dutch may better facilitate societal control. Informing physicians about the law and the due care requirements for euthanasia, and systematic feedback about their medical actions are both pivotal to achieving efficient societal control and engendering the level of care needed when performing such far-reaching medical acts.

  10. Quality control parameters for Tamra (copper) Bhasma. (United States)

    Jagtap, Chandrashekhar Yuvaraj; Prajapati, Pradeepkumar; Patgiri, Biswajyoti; Shukla, Vinay J


    Metallic Bhasmas are highly valued and have their own importance in Ayurvedic formulations. To testify the Bhasmas various parameters have been told in Rasashastra classics. Tamra Bhasma (TB) with its different properties is used in the treatment of various diseases is quiet famous among the Ayurvedic physicians (Vaidyas). The present study was carried out to set up the quality control parameters for the TB by making the use of classical tests along with advanced analytical tools. Copper wire taken for the preparation of Bhasma was first analyzed for its copper content and then subjected to Shodhana, Marana and Amrutikarana procedures as per the classical references. Final product complied with all the classical parameters like Rekhapurnatwa, Varitaratwa etc. After complying with these tests TB was analyzed by advanced analytical techniques like particle size distribution (PSD) analysis, scanning electron microscopy (SEM), and inductive coupled plasma spectrometry (ICP). PSD analysis of TB showed volumetric mean diameter of 28.70 μm, 50% of the material was below 18.40 μm size. Particle size less than 2μm were seen in SEM. 56.24 wt % of copper and 23.06 wt % of sulphur was found in ICP-AES. Heavy metals like cadmium, selenium were not detected while others like arsenic, lead and mercury were present in traces. These observations could be specified as the quality control parameters conforming to all the classical tests under the Bhasma Pariksha.

  11. Experience with ISO quality control in assisted reproductive technology. (United States)

    Alper, Michael M


    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.

  12. 17 CFR 140.24 - Control and accountability procedures. (United States)


    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Control and accountability... ORGANIZATION, FUNCTIONS, AND PROCEDURES OF THE COMMISSION Functions § 140.24 Control and accountability... accountability for such information at all times and for locking classified information in approved...

  13. Quality control tests for the CMS Barrel RPCs

    Energy Technology Data Exchange (ETDEWEB)

    Abbrescia, M. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Colaleo, A. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Guida, R. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Iaselli, G. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Loddo, F. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Maggi, M. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Marangelli, B. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Natali, S. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Nuzzo, S. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Pugliese, G. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy)]. E-mail:; Ranieri, A. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Romano, F. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Trentadue, R. [Dipartimento Interateneo di Fisica and Sezione INFN, v. G. Amendola 173, 70126 Bari (Italy); Cavallo, N.; Fabozzi, F. [Universita degli studi della Basilicata and Sezione INFN, Naples (Italy); Paolucci, P.; Piccolo, D.; Polese, G.; Sciacca, C.; Belli, G.; Necchi, M.; Ratti, S.P.; Riccardi, C.; Torre, P.; Vitulo, P. [Dipartimento di Fisica Nucleare e Teorica and Sezione INFN, v. U. Bassi 6, 27100 Pavia (Italy); Anguelov, T.; Genchev, V.; Panev, B.; Piperov, S.; Sultanov, G.; Vankov, P. [INRNE, BAS, Soa (Bulgaria); Dimitrov, A.; Litov, L.; Pavlov, B.; Petkov, P. [University of Soa St. Kliment Ohridski (Bulgaria)


    An RPC based system will be employed for the CMS muon first level trigger. Severe quality controls and certification have been established all along the entire production chain. Procedures are briefly described and results for the acceptance percentage are given for the second part of the single gaps and double gaps production. Summary results are also reported for the full sets of tested chambers.

  14. Information Quality Control of ERP System

    Institute of Scientific and Technical Information of China (English)


    From the viewpoint of manufacturing enterprises, th is thesis discusses the concept and definition of information quality as well as t he connotation of information quality. Based on our personal experiences of many years, we have summarized the cases of success and failure with ERP system, an d from the angle of information quality control, we have come up with the follow ing concepts : static information quality of enterprises, information maturity o f enterprises and dynamic information quality.Inform...

  15. Methodical Grounds of Managing the Product Quality Control

    Directory of Open Access Journals (Sweden)

    Shapoval Olena A.


    Full Text Available The article analyses the modern state of products quality control management. It justifies a necessity of organisation of the quality control system under conditions of uninterrupted flow line production. It reveals problems connected with a low level of the products quality control management. It forms a set of factors of internal and external environments, which should be taken into account in the process of selection of a type of managerial actions by the products quality control. It considers specific features of identification of the most important factors at an enterprise on the basis of use of the matrix of strategic SWOT analysis. It offers a procedure of identification of a general assessment of factors of influence. It analyses a mechanism of use of main conceptual models, which reflect the system nature of quality management in an organisation – quality pyramids and quality loops. It proves a necessity of application of a principally new scheme of relations between the customer and enterprise, which envisages that requirements of the quality management system focus not on control and screening of semi-finished products, but on creation of conditions that exclude rejects. It considers the role of ISO 9000 in the system of quality management, which recommend the customers to make a preliminary assessment of activity of the producing enterprise.

  16. Compliance with infection control procedures among California orthodontists. (United States)

    Woo, J; Anderson, R; Maguire, B; Gerbert, B


    We conducted a survey of a random sample of California orthodontists and of general dentists to compare their infection control procedures. Questionnaires were returned by 124 orthodontists (56% response rate) and 126 general dentists (61% response rate). Eighteen questions were asked covering practice profile, perception of risk from hepatitis B virus (HBV) and human immunodeficiency virus (HIV), exposure to blood, barrier protection used, and sterilization and disinfection procedures. Gloves always were worn by 80% of the orthodontists sampled, 63% always wore glasses, and 59% changed gloves between patients. Orthodontists sterilized their instruments 66% of the time and pliers 49% of the time. Compared with general dentists, orthodontists' perception of risk, use of barrier protection, and sterilization and disinfection procedures were lower in all areas. Our data suggest that poorer performance may be because orthodontists: (1) perceive their younger population of patients at less risk for HBV and HIV; (2) treat 2.5 times as many patients, which increases the costs of infection control; (3) do not use invasive procedures; and (4) perceive that glove use decreases dexterity. Orthodontists should follow the American Dental Association/Council on Dental Therapeutics infection control guidelines for universal precautions. To meet these guidelines, orthodontists still need improvement in all aspects of their infection control procedures.

  17. Determining the quality evaluation procedures using the expert systems

    CERN Document Server

    Holban, N; Iancu, E


    At this time, quality is a strategic instrument of the entities' global management, but it is also a determining element of their competitive spirit. The importance given to quality is abundantly found in the preoccupations of the European Union's Minister Board, by elaborating documents with a high impact over the quality of products/ services in special, and organizations in general. We live in an era, when the evolution of the social life puts the accent more and more on quality, resulted from various processes, at the level of various domains of the economical and social development.

  18. Advances in quality control for dioxins monitoring and evaluation of measurement uncertainty from quality control data. (United States)

    Eppe, Gauthier; De Pauw, Edwin


    This paper describes an application of multivariate and multilevel quality control charts with the aim of improving the internal quality control (IQC) procedures for the monitoring of dioxins and dioxin-like PCBs analysis in food. Dioxin analysts have to use the toxic equivalent concept (TEQ) to assess the toxicity potential of a mixture of dioxin-like compounds. The TEQ approach requires quantifying individually 29 dioxin-like compounds. Monitoring the congeners separately on univariate QC charts is misleading owing to the increase of false alarm rate. We propose to subdivide the TEQ value into 3 sub-groups and to control simultaneously the 3 variables in a T(2) chart. When a T(2) exceeds the upper control limit, it acts as a warning to trigger additional investigations on individual congeners. We discuss the minimum number of runs required to reliably estimate the QC chart parameters and we suggest using data from multilevel QC charts to properly characterize the standard deviations and the correlation coefficients. Moreover, the univariate QC chart can be sensitised to detect systematic errors by using exponentially weighted moving average (EWMA) technique. The EWMA chart provides an additional guidance on setting appropriate criteria to control the method bias and to support trend analysis. Finally, we present an estimate of measurement uncertainty by computing the accuracy profile in a retrospective way with the QC data generated and we discuss assessment of compliance with regulatory maximum levels.

  19. Shipping/Receiving and Quality Control (United States)

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

  20. Establishment for quality control of experimental animal

    Energy Technology Data Exchange (ETDEWEB)

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


    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.

  1. Colorado Air Quality Control Regulations and Ambient Air Quality Standards. (United States)

    Colorado State Dept. of Health, Denver. Div. of Air Pollution Control.

    Regulations and standards relative to air quality control in Colorado are defined in this publication. Presented first are definitions of terms, a statement of intent, and general provisions applicable to all emission control regulations adopted by the Colorado Air Pollution Control Commission. Following this, three regulations are enumerated: (1)…

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


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


    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 statistical analysis was conducted. The analysis comprised 64.373 audit results on 26,953 dairy farms and all conducted lab tests of bulk-milk samples two, six or 12 months before the audit. Lab results in...

  3. Hierarchical control of procedural and declarative category-learning systems. (United States)

    Turner, Benjamin O; Crossley, Matthew J; Ashby, F Gregory


    Substantial evidence suggests that human category learning is governed by the interaction of multiple qualitatively distinct neural systems. In this view, procedural memory is used to learn stimulus-response associations, and declarative memory is used to apply explicit rules and test hypotheses about category membership. However, much less is known about the interaction between these systems: how is control passed between systems as they interact to influence motor resources? Here, we used fMRI to elucidate the neural correlates of switching between procedural and declarative categorization systems. We identified a key region of the cerebellum (left Crus I) whose activity was bidirectionally modulated depending on switch direction. We also identified regions of the default mode network (DMN) that were selectively connected to left Crus I during switching. We propose that the cerebellum-in coordination with the DMN-serves a critical role in passing control between procedural and declarative memory systems.

  4. Quality Control in Production Processes

    Directory of Open Access Journals (Sweden)

    Prístavka Miroslav


    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.

  5. Quality control education in the community college (United States)

    Greene, J. Griffen; Wilson, Steve


    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.

  6. Handling qualities requirements for control configured vehicles (United States)

    Woodcock, R. J.; George, F. L.


    The potential effects of fly by wire and control configured vehicle concepts on flying qualities are considered. Failure mode probabilities and consequences, controllability, and dynamics of highly augmented aircraft are among the factors discussed in terms of design criteria.

  7. Employee quality, monitoring environment and internal control

    Directory of Open Access Journals (Sweden)

    Chunli Liu


    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.

  8. Time Impact of Expanded Process Control Procedures (EPCP) (United States)


    than the Organizational maintenance. Depot maintenance occurs in the manufacturer’s specialized shops . This type of work is generally the most...EXPANDED PROCESS CONTROL PROCEDURES (EPCP) by Jeremy C. Joseph June 2014 Thesis Advisor: Gary O. Langford Second Reader: Diana I. Angelis...

  9. Applications of Self-Control Procedures by Children: A Review. (United States)

    O'Leary, Susan G.; Dubey, Dennis R.


    Particular emphasis is on self-instruction, self-determined criteria, self-assessment, and self-reinforcement. Self-punishment, comprehensive programs, and innovative self-control procedures (including distraction and restatement of contingencies) are also evaluated. (Author/DLS)

  10. 7 CFR 981.442 - Quality control. (United States)


    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Quality control. 981.442 Section 981.442 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements... Administrative Rules and Regulations § 981.442 Quality control. (a) Incoming. Pursuant to § 981.42(a),...

  11. Lessons learned before and after cardiomyoplasty: risk sensitive patient selection and post procedure quality of life. (United States)

    Furnary, A P; Swanson, J S; Grunkemeier, G; Starr, A


    This paper unveils some of the clinical lessons we have learned from caring for cardiomyoplasty patients over the past 7 years. We examine both the clinical and scientific rationale for expanding the time frame of "procedural mortality" from 30 days to 90 days. Utilizing this definition of procedural mortality, preoperative patient variables were applied to postoperative patient outcomes in order to develop a risk sensitive method of patient selection. Preoperative atrial fibrillation, elevated pulmonary capillary wedge pressure, decreased peak oxygen consumption, and the requirement of intra-aortic balloon pump at the time of cardiomyoplasty, were all found to be independent risk factors for early death following cardiomyoplasty. This analysis, which has been previously published, is reviewed and enhanced with the mathematical equations for duplicating these relative risk calculations. The mathematical model presented herein allows a method of risk stratification, which obviates the need for randomized congestive heart failure controls in the future. In the absence of a statistically regulated control population, we also examine the 1-year clinical outcomes of the nonrandomizd control group of patients, who were followed during the North American FDA Phase II Cardiomyoplasty Trial. This quality of life comparison with cardiomyoplasty patients at 1 year revealed a significant decrease in intensive care unit patient-days, a significant increase in activity of daily living score, and a significant improvement in New York Heart Association functional class as compared to control.

  12. Comparison of different optimization and process control procedures

    Directory of Open Access Journals (Sweden)

    Marko Reibenschuh


    Full Text Available This paper includes a comparison of different optimization methods, used for optimizing the cutting conditions during milling. It includes also a part of using soft computer techniques in process control procedures. Milling is a cutting procedure dependent of a number of variables. These variables are dependent from each other in consequence, if we change one variable, the others change too. PSO and GA algorithm are applied to the CNC milling program to improve cutting conditions, improve end finishing, reduce tool wear and reduce the stress on the tool, the machine and the machined part. At the end a summary will be given of pasted and future researches.

  13. Procedures adopted by orthodontists for space closure and anchorage control

    Directory of Open Access Journals (Sweden)

    André da Costa Monini


    Full Text Available OBJECTIVE: The aim of this study was to identify the procedures adopted by Brazilian orthodontists in the following situations: extraction space closure, anchorage control in case of necessary anchorage for group A and frequency of skeletal anchorage use, especially in the upper jaw. METHOD: A questionnaire was sent to the e-mail address of all dentists registered in the Brazilian Federal Council of Dentistry. RESULTS: The results showed that most Brazilian orthodontists usually perform extraction space closure by means of sliding mechanics. The use of palatal bar, inclusion of second molars in the archwire and space closure performed in two phases are the most used techniques for anchorage control in the upper jaw. The skeletal anchorage is referenced by 36.5% of specialists as a routine practice for the upper jaw anchorage. CONCLUSIONS: There is a wide variety of procedures adopted by Brazilian orthodontists for orthodontic space closure and anchorage control.

  14. Procedure for assessing visual quality for landscape planning and management (United States)

    Gimblett, H. Randal; Fitzgibbon, John E.; Bechard, Kevin P.; Wightman, J. A.; Itami, Robert M.


    Incorporation of aesthetic considerations in the process of landscape planning and development has frequently met with poor results due to its lack of theoretical basis, public involvement, and failure to deal with spatial implications. This problem has been especially evident when dealing with large areas, for example, the Adirondacks, Scenic Highways, and National Forests and Parks. This study made use of public participation to evaluate scenic quality in a portion of the Niagara Escarpment in Southern Ontario, Canada. The results of this study were analyzed using the visual management model proposed by Brown and Itami (1982) as a means of assessing and evaluating scenic quality. The map analysis package formulated by Tomlin (1980) was then applied to this assessment for the purpose of spatial mapping of visual impact. The results of this study illustrate that it is possible to assess visual quality for landscape/management, preservation, and protection using a theoretical basis, public participation, and a systematic spatial mapping process.

  15. Sensometrics for Food Quality Control

    DEFF Research Database (Denmark)

    Brockhoff, Per B.


    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...

  16. Quality control for quantitative geophysical logging

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sang Kyu; Hwang, Se Ho; Hwang, Hak Soo; Park, In Hwa [Korea Institute of Geology Mining and Materials, Taejon (Korea)


    Despite the great availability of geophysical data obtained from boreholes, the interpretation is subject to significant uncertainties. More accurate data with less statistical uncertainties should require an employment of more quantitative techniques in log acquisition and interpretation technique. The long-term objective of this project is the development of techniques in both quality control of log measurement and the quantitative interpretation. In the first year, the goals of the project will include establishing the procedure of log acquisition using various tests, analysing the effect of logging velocity change on the logging data, examining the repeatability and reproducibility, analyzing of filtering effect on the log measurements, and finally the zonation and the correlation of single-and inter-well log data. For the establishment of logging procedure, we have tested the multiple factors affecting the accuracy in depth. The factors are divided into two parts: human and mechanical. These factors include the zero setting of depth, the calculation of offset for the sonde, the stretching effect of cable, and measuring wheel accuracy. We conclude that the error in depth setting results primarily from human factor, and also in part from the stretching of cable. The statistical fluctuation of log measurements increases according to increasing the logging speed for the zone of lower natural gamma. Thus, the problem related with logging speed is a trifling matter in case of the application of resources exploration, the logging speed should run more slowly to reduce the statistical fluctuation of natural gamma with lithologic correlation in mind. The repeatability and reproducibility of logging measurements are tested. The results of repeatability test for the natural gamma sonde are qualitatively acceptable in the reproducibility test, the errors occurs in logging data between two operators and successive trials. We conclude that the errors result from the

  17. Optimization of preparation, labelling and quality control procedures of {sup 99m}Tc-glucarate for the diagnosis of acute myocardial infarction; Otimizacao dos procedimentos de preparacao, marcacao e controle de qualidade do glucarato-{sup 99m}Tc para diagnostico do infarto agudo do miocardio

    Energy Technology Data Exchange (ETDEWEB)

    Camargo, Ana Claudia


    Cardiovascular diseases account for the main causes of morbidity and mortality among the adult population. Despite the advances of preventive medicine, acute myocardial infarction continues to be frequent and the difficulty of the differential diagnosis is an additional cause of fatal events. Its diagnosis is based on the triad: typical chest pain, alterations in the electrocardiogram and elevation of serum cardiac enzymes. However, many patients evolve without the complete syndrome. Therefore the development of non-invasive assays for the early detection of damaged myocardium is of extreme importance. {sup 99m}Tc-glucarate is a radiopharmaceutical of great interest for application in Nuclear Medicine, because it is referred as a potential marker of necrotic tissues in the early phase of an acute coronary event. This presentation describes the optimization of preparation, lyophilization and labelling as well as quality control procedures of {sup 99m}Tc-glucarate, based on former studies published in the literature. Radiochemical purity was evaluated by the ascending paper chromatography technique. Labelling efficiency as a function respectively of time of reaction, volume and activity of {sup 99m}TcO4- was consistently higher than 97%. The lyophilized kit was stable during 12 months of storage. Biodistribution in healthy Swiss mice showed rapid blood clearance, renal excretion and low uptake by organs adjacent to the heart. Scintigraphic studies of injected Wistar rats confirmed the results of the biodistribution obtained by direct organ counting. Scintigraphies of infarcted female rats proved the sensitivity of the method. (author)

  18. Flying qualities criteria and flight control design (United States)

    Berry, D. T.


    Despite the application of sophisticated design methodology, newly introduced aircraft continue to suffer from basic flying qualities deficiencies. Two recent meetings, the DOD/NASA Workshop on Highly Augmented Aircraft Criteria and the NASA Dryden Flight Research Center/Air Force Flight Test Center/AIAA Pilot Induced Oscillation Workshop, addressed this problem. An overview of these meetings is provided from the point of view of the relationship between flying qualities criteria and flight control system design. Among the items discussed are flying qualities criteria development, the role of simulation, and communication between flying qualities specialists and control system designers.


    Directory of Open Access Journals (Sweden)



    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.

  20. 一种决明子质量控制新方法及其在中国市售该药材评价中的应用%A new comprehensive procedure for the quality control of Semen Cassiae and its application in evaluating commercially available material in China

    Institute of Scientific and Technical Information of China (English)

    刁玉林; 王如峰; 章宸; 陈建新; 刘斌


    目的:建立一种决明子较为系统、适用的质量控制方法,为中国药典决明子质量标准修订提供建议.方法:建立了一种以大黄酚-1-O-β-D-葡萄糖-(1→3)-β-D-葡萄糖-(1→6)-β-D-葡萄糖苷(1)、红镰霉素-6-O-β-D-龙胆二糖苷(2)及决明内酯-9-O-β-D-龙胆二糖苷(3)3种主要成分为指标的HPLC分析方法,并采用主成分分析法对结果进行分析.结果:对66批中国不同地区市售决明子进行含量测定及分析,并给出3个主要成分的限量.结论:该方法适用于中国市售决明子的质量评价,并可作为目前决明子质量标准的有效补充.%AIM:To establish a more comprehensive and suitable procedure for the quality control of Semen Cassiae which can be used to supplement the evaluation procedure adopted by the Pharmacopoeia of the Peoples Republic of China.METHODS:A HPLC assay-based comprehensive quality evaluation procedure for Semen Cassiae using three bioactive compounds including anthraquinones and naphthopyrones,i.e.,chrysophanol-1-O-β-D-glucopyranosyl-(1→3)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (1),rubrofusarin-6-O-β-D-gentiobioside (2) and toralactone-9-O-β-D-gentiobioside (3) as the index components was established.The resultant data were further analyzed by principal component analysis (PCA) and data distribution methods using software SPSS 16.0.RESULTS:Sixty-six batches of Semen Cassiae obtained from various regions of China were analyzed with the procedure.Based on the test results of these batches,the content limits of the three bioactive compounds in Semen Cassiae were proposed.CONCLUSION:The procedure established herein is more comprehensive and appropriate for the quality evaluation of Semen Cassiae commercially available in China,and can be used as a useful supplement to the current official method in China for the quality evaluation of Semen Cassiae.

  1. Secondary Control for Voltage Quality Enhancement in Microgrids

    DEFF Research Database (Denmark)

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


    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 controllers includes a selective virtual impedance loop which is considered to improve sharing of fundamental and harmonic components of load current among the DG units. The sharing improvement is provided at the expense of increasing voltage unbalance and harmonic distortion. Thus, the secondary control...... level is applied to manage the compensation of SLB voltage unbalance and harmonics by sending proper control signals to the primary level. DGs compensation efforts are controlled locally at the primary level. The system design procedure for selecting proper control parameters is discussed. Simulation...

  2. Automated RNA Sample Quality Control


    Borg, Solange; Salowsky, Ruediger; Inche, Adam; Connelly, Matthew; Boland, Dierdre; Padmanabanv, Arunkumar; Graf, Eva; Liu, Melissa Huang


    The Agilent 2200 TapeStation system provides a flexible solution for automated analysis of up to 96 samples using pre-packaged reagents and minimal manual handling. Here we present a new assay – the RNA ScreenTape assay – to enable robust quantification and quality analysis of Total RNA samples from both eukaryotic and prokaryotic sources from 100 pg/μl to 500 ng/μl. The new assay additionally benefits from the ability to provide separation of contaminant genomic DNA allowing more accurate pu...

  3. AP-102/104 Retrieval control system qualification test procedure

    Energy Technology Data Exchange (ETDEWEB)

    RIECK, C.A.


    This Qualification Test Procedure documents the results of the qualification testing that was performed on the Project W-211, ''Initial Tank Retrieval Systems,'' retrieval control system (RCS) for tanks 241-AP-102 and 241-AP-104. The results confirm that the RCS has been programmed correctly and that the two related hardware enclosures have been assembled in accordance with the design documents.

  4. Determining the quality of competences assessment programs: A self-evaluation procedure

    NARCIS (Netherlands)

    Baartman, Liesbeth; Prins, Frans; Kirschner, Paul A.; Van der Vleuten, Cees


    Baartman, L. K. J., Prins, F. J., Kirschner, P. A., & Van der Vleuten, C. P. M. (2007). Determining the quality of Competence Assessment Programs: A self-evaluation procedure. Studies in Educational Evaluation, 33, 258-281.

  5. Determining the quality of competences assessment programs: A self-evaluation procedure

    NARCIS (Netherlands)

    Baartman, Liesbeth; Prins, Frans; Kirschner, Paul A.; Van der Vleuten, Cees


    Baartman, L. K. J., Prins, F. J., Kirschner, P. A., & Van der Vleuten, C. P. M. (2007). Determining the quality of Competence Assessment Programs: A self-evaluation procedure. Studies in Educational Evaluation, 33, 258-281.

  6. Quality Control Analytical Methods: Method Validation. (United States)

    Klang, Mark G; Williams, LaVonn A


    To properly determine the accuracy of a pharmaceutical product or compounded preparation, tests must be designed specifically for that evaluation. The procedures selected must be verified through a process referred to as method validation, an integral part of any good analytical practice. The results from a method validation procedure can be used to judge the quality, reliability, and consistency of analytical results. The purpose of this article is to deliver the message of the importance of validation of a pharmaceutical product or compounded preparation and to briefly discuss the results of a lack of such validation. Copyright© by International Journal of Pharmaceutical Compounding, Inc.

  7. Quality control for exposure assessment in epidemiological studies

    DEFF Research Database (Denmark)

    Bornkessel, C; Blettner, M; Breckenkamp, J


    In the framework of an epidemiological study, dosemeters were used for the assessment of radio frequency electromagnetic field exposure. To check the correct dosemeter's performance in terms of consistency of recorded field values over the entire study period, a quality control strategy...... was developed. In this paper, the concept of quality control and its results is described. From the 20 dosemeters used, 19 were very stable and reproducible, with deviations of a maximum of +/-1 dB compared with their initial state. One device was found to be faulty and its measurement data had to be excluded...... from the analysis. As a result of continuous quality control procedures, the confidence in the measurements obtained during the field work was strengthened significantly....

  8. 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.


    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 sep

  9. Quality or Control? Management in Higher Education (United States)

    Milliken, John; Colohan, Gerry


    Over the past fifteen years the rationale, organisational infrastructure and delivery of social policy in Britain have undergone radical transformation. Whereas efficiency was the key word of the 1980s, quality was the touchstone of the 1990s and quality control with accountability has become the management philosophy of the new millennium.…

  10. Quality Control Guidelines for SAM Chemical Methods (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).

  11. Quality Control Guidelines for SAM Biotoxin Methods (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).

  12. Quality Control Guidelines for SAM Radiochemical Methods (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).

  13. Quality Control Guidelines for SAM Pathogen Methods (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).

  14. Quality Control Approaches for Chinese Herbal Medicines

    Institute of Scientific and Technical Information of China (English)

    YUAN Hai-long; ZHANG Tian-tian; XIAO Xiao-he


    The current official quality control approaches meet the challenges from the complexity of herbal medicines.In fact,any herbal medicines containing numerous unknown components,its curative effect usually depends on the whole of herbal medicines,so it is impossible and unnecessary to qualitatively and quantitatively study every component.By investigating the limitations of current quality control approaches for herbal medicines and the difference and similarity in the chemical substantial style as well as quality control pattern of herbal medicines,a new quality control approach for Chinese herbal medicines should be explored and designed.The combination approach of chemical analysis with bioassay is promising to be developed and employed in order to ensure the safety and efficacy of Chinese herbal medicines.

  15. Quality Controlled Local Climatological Data (QCLCD) Publication (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,...

  16. Hospital procedure volume should not be used as a measure of surgical quality. (United States)

    LaPar, Damien J; Kron, Irving L; Jones, David R; Stukenborg, George J; Kozower, Benjamin D


    The Agency for Healthcare Research and Quality and the Leapfrog Group use hospital procedure volume as a quality measure for pancreatic resection (PR), abdominal aortic aneurysm (AAA) repair, esophageal resection (ER), and coronary artery bypass grafting (CABG). However, controversy exists regarding the strength and validity of the evidence for the volume-outcome association. The purpose of this study was to reevaluate the volume-outcome relationship for these procedures. Discharge data for 261,412 patients were extracted from the 2008 Nationwide Inpatient Sample. The relationship between hospital procedure volume and mortality was rigorously assessed using hierarchical general linear modeling with restricted cubic splines, adjusted for patient demographics, comorbid disease, and elective procedure status. Unadjusted mortality rates were PR (4.7%), AAA (12.7%), ER (5.8%), and CABG (2.2%), and the majority of operations were elective. Hospital procedure volume was not a statistically significant predictor of in-hospital mortality for any of the 4 procedures. Strong predictors of mortality included age, elective procedure status, renal failure, and malnutrition (P procedure volume is not a significant predictor of mortality for the performance of pancreatectomy, AAA repair, esophagectomy, or CABG. Procedure volume by itself should not be used as a proxy measure for surgical quality. Patient mortality risk is primarily attributable to patient-level characteristics such as age and comorbidity.

  17. Compliance with infection-control procedures among Illinois orthodontists. (United States)

    Davis, D; BeGole, E A


    The authors of previous studies have reported an increasing percentage of orthodontists complying with infection-control procedures in their offices, yet compliance was found to be less than ideal. In this study we surveyed Illinois orthodontists to evaluate their compliance with the infection-control guidelines established by the American Dental Association and the Centers for Disease Control and Prevention. This study is an addition to a small number of studies in the field of orthodontics on infection-control procedures. The study population was taken from the World Directory of Orthodontists, which contains 374 listings for the state of Illinois. Responses were received from 140 orthodontists, for a response rate of 37%. Thirty-two percent of the responding orthodontists stated that they always wear masks; 13% said they never do. Almost 97% of the orthodontists said they always wear gloves, and no orthodontist reported never wearing gloves. Nearly 64% of the orthodontists reported always using eyewear, and 34% said they wear gowns, whereas only 5% do not wear eye protection and 35% never wear gowns. With regard to instruments and pliers, most of the orthodontists reported using dry-heat ovens (72% and 80%, respectively), whereas nearly 58% said they use chemical disinfection to some extent on instruments and 39% said they use chemical disinfection on pliers. Only 51% of the orthodontists surveyed in our study reported using a steam autoclave to sterilize handpieces, whereas 27% said they use dry-heat ovens, 11% reported using chemical vapor, and 37% said they use chemical disinfection. In conclusion, compliance with infection control procedures among orthodontists has improved from recent studies but is still less than full compliance.

  18. An Unified Approach for Process Quality Analysis and Control

    Directory of Open Access Journals (Sweden)

    Prof.Chandrakanth Biradar,Aruna Kawdi


    Full Text Available Abstract— The process in a company finally results in product of the company, which represents the company standard. Hence, during the process execution time quality of the process needs to be taken care before and after the work done. In this paper, an unified approach to quality analysis and control of a process development is presented. This approach gives an overview of what the task the company assigned to the employers. The process is defined as the set of action items to achieve the work completion. Quality means grade of excellence. Quality analysis of a process is an improvement of the process and making sure that all the standard procedures are followed. An unified approach designed in this paper is a combination of software cost estimation and a financial market forecasting with the support of historical data, statistical data mining technique and artificial neural networks, which helps the developers as well as investors in strategic planning and investment decision making. Therefore, the paper describes a recommended process to develop software (SW cost estimates for software managers, perform financial market forecasting to control quality of process development. As a result, the improvement and analysis of the process quality can be performed from basic level to the corporate level. By this work, we conclude that the process quality control can be made easier and efficient compared to the old graphical analytics technique.

  19. Effectiveness of HVAC duct cleaning procedures in improving indoor air quality. (United States)

    Ahmad, I; Tansel, B; Mitrani, J D


    Indoor air quality has become one of the most serious environmental concerns as an average person spends about 22 hr indoors on a daily basis. The study reported in this article, was conducted to determine the effectiveness of three commercial HVAC (Heating Ventilation Air Conditioning) duct cleaning processes in reducing the level of airborne particulate matter and viable bioaerosols. The three HVAC sanitation processes were: (1) Contact method (use of conventional vacuum cleaning of interior duct surfaces); (2) Air sweep method (use of compressed air to dislodging dirt and debris); (3) Rotary brush method (insertion of a rotary brush into the ductwork to agitate and dislodge the debris). Effectiveness of these sanitation processes was evaluated in terms of airborne particulate and viable bioaerosol concentrations in residential homes. Eight identical homes were selected in the same neighborhood. Two homes were cleaned using each procedure and two were used as controls. It was found that both particle count readings and bioaerosol concentrations were higher when cleaning was being performed than before or after cleaning, which suggests that dirt, debris and other pollutants may become airborne as a result of disturbances caused by the cleaning processes. Particle count readings at 0.3 micron size were found to have increased due to cigarette smoking. Particle counts at 1.0 micron size were reduced due to HVAC duct cleaning. Post-level bioaerosol concentrations, taken two days after cleaning, were found to be lower than the pre-level concentrations suggesting that the cleaning procedures were effective to some extent. Homes cleaned with the Air Sweep procedure showed the highest degree of reduction in bioaerosol concentration among the three procedures investigated.

  20. Developing methods of controlling quality costs

    Directory of Open Access Journals (Sweden)

    Gorbunova A. V.


    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.

  1. Quality assurance and quality control in clinical cytogenetics. (United States)

    Mikhail, Fady M; Watson, Michael S


    The goal of any clinical laboratory should be to provide patients with the most accurate test results possible. This is accomplished through various overlapping programs that continuously monitor and optimize all aspects of a test, including decisions by the laboratory to offer a test, the decision of providers to request the test, the testing itself, and the reporting of results to the referral source and patient. The levels at which test performance and accuracy can be optimized are encompassed under quality control (QC) and quality assurance (QA). The monitoring of QC and QA problems allows for the integration of these parameters into a total quality management program. This unit reviews QC and QA guidelines, in addition to discussing how to establish a quality assurance program.

  2. Procedural and Conceptual Knowledge: Exploring the Gap between Knowledge Type and Knowledge Quality (United States)

    Star, Jon R.; Stylianides, Gabriel J.


    Following Star (2005, 2007), we continue to problematize the entangling of type and quality in the use of conceptual knowledge and procedural knowledge. Although those whose work is guided by types of knowledge and those whose work is guided by qualities of knowledge seem to be referring to the same phenomena, actually they are not. This lack of…

  3. Radiation protection of patients and quality controls in teleradiology

    Energy Technology Data Exchange (ETDEWEB)

    Vermiglio, G.; Testagrossa, B.; Sansotta, C.; Tripepi, M.G. [Messina Univ., Dept. of Protezionistica Ambientale, Sanitaria, Sociale ed Industriale (Italy)


    Nowadays, it is well-known that tele-radiology represents the new frontier of radiodiagnostic imaging. In this case, the continuous broadening of transmission bands and the more sophisticated procedures of information packaging constitute a no negligible inducement. Moreover, standards used to convert analogical signals into the digital ones, necessary to transfer via ether radiological images and information, involve a more limited loss of information. Nevertheless, unlike the common images, in case of the X-ray diagnostic images it must take into account that the EURATOM Council Directives give the health physicist all the procedures to be followed for checking the status of X-ray equipments. In particular, the EURATOM Council Directives provide minimum criteria of acceptance for parameters that characterised the correct working of the radiological equipments and the guide lines for standardised execution of X-ray images, in order to obtain high quality information. In addiction, for maintaining such level it is necessary to adopt adequate programs of Quality Assurance. Naturally, the high quality of radiological images must be conserved after the transmission of information. So, in order to evaluate the amount of losses that can be introduced after transferring the X-ray images from source to user, the authors have carried out specific procedures in order to evaluate the quality level of the images after transmission and to compare them with the correspondent ones acquired at the equipment console. To this aim, the AAs have identified all the parameters able to verify the quality level of the images and measured the values obtained for the directly acquired images and the transferred ones. They have also considered different kinds of transmission protocols to define suitable procedures of remote quality controls. (authors)

  4. Network-based production quality control (United States)

    Kwon, Yongjin; Tseng, Bill; Chiou, Richard


    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. Patients with Parkinson's Disease Learn to Control Complex Systems via Procedural as Well as Non-Procedural Learning (United States)

    Osman, Magda; Wilkinson, Leonora; Beigi, Mazda; Castaneda, Cristina Sanchez; Jahanshahi, Marjan


    The striatum is considered to mediate some forms of procedural learning. Complex dynamic control (CDC) tasks involve an individual having to make a series of sequential decisions to achieve a specific outcome (e.g. learning to operate and control a car), and they involve procedural learning. The aim of this study was to test the hypothesis that…

  6. Patients with Parkinson's Disease Learn to Control Complex Systems via Procedural as Well as Non-Procedural Learning (United States)

    Osman, Magda; Wilkinson, Leonora; Beigi, Mazda; Castaneda, Cristina Sanchez; Jahanshahi, Marjan


    The striatum is considered to mediate some forms of procedural learning. Complex dynamic control (CDC) tasks involve an individual having to make a series of sequential decisions to achieve a specific outcome (e.g. learning to operate and control a car), and they involve procedural learning. The aim of this study was to test the hypothesis that…

  7. 78 FR 15895 - Approval and Promulgation of Air Quality Implementation Plans: North Carolina; Control Techniques... (United States)


    ... 2D, .0521, .0614, NCAC 2Q .0102, .0304, and .0902. These rules address Air Pollution Control, Emission Control Standards, Monitoring and Recordkeeping and Air Quality Permit Procedures and are not... AGENCY 40 CFR Part 52 Approval and Promulgation of Air Quality Implementation Plans: North...


    Directory of Open Access Journals (Sweden)

    Barbara Mickowska


    Full Text Available The aim of this study was to assess the importance of validation and uncertainty estimation related to the results of amino acid analysis using the ion-exchange chromatography with post-column derivatization technique. The method was validated and the components of standard uncertainty were identified and quantified to recognize the major contributions to uncertainty of analysis. Estimated relative extended uncertainty (k=2, P=95% varied in range from 9.03% to 12.68%. Quantification of the uncertainty components indicates that the contribution of the calibration concentration uncertainty is the largest and it plays the most important role in the overall uncertainty in amino acid analysis. It is followed by uncertainty of area of chromatographic peaks and weighing procedure of samples. The uncertainty of sample volume and calibration peak area may be negligible. The comparison of CV% with estimated relative uncertainty indicates that interpretation of research results can be misled without uncertainty estimation.

  9. Embedding Procedure Assistance into Mission Control Tools Project (United States)

    National Aeronautics and Space Administration — Procedures are the accepted means of commanding spacecraft. Procedures encode the operational knowledge of a system as derived from system experts, testing,...

  10. Protein quality control in the nucleus

    DEFF Research Database (Denmark)

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


    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....

  11. 30 CFR 28.31 - Quality control plans; contents. (United States)


    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Quality control plans; contents. 28.31 Section... PROTECTION FOR TRAILING CABLES IN COAL MINES Quality Control § 28.31 Quality control plans; contents. (a) Each quality control plan shall contain provisions for the management of quality, including:...

  12. Frontiers in statistical quality control 11

    CERN Document Server

    Schmid, Wolfgang


    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. Using sequential analysis procedures to rank the influencing factors of public work's quality

    Institute of Scientific and Technical Information of China (English)


    In order to improve the efficiency in management of public work projects, screening and controlling influencing factors affecting the quality of a public work project is essential. This study synthesized 9 influential categories including 91 factors related to quality management of public works in Taiwan using a sequential analysis procedure. According to the Borda-values of influencing factors obtained from a first stage questionnaire, the number of primary factors selected by the responsible entities and the design-supervisory entities were 44 and 45 respectively. A Fuzzy Analytic Hierarchy Process (FAHP)was used to prioritize and rank these factors. The top five factors ranked by the responsible entities were (1) introduction of the earned value analysis, (2) working efficiency, (3) environmental laws and regulations, (4) price-index fluctuation, and (5) on-site safety management. The top five factors ranked by the design-supervisory entities were (1) man power, (2) laws and regulations, (3)price-index fluctuation, (4) traffic conditions, and (5) faulty design.

  14. HPLC for quality control of polyimides (United States)

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


    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.

  15. Statistical quality control a loss minimization approach

    CERN Document Server

    Trietsch, Dan


    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)

  16. HPLC for quality control of polyimides (United States)

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


    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.

  17. [Colonoscopy quality control as a requirement of colorectal cancer screening]. (United States)

    Quintero, Enrique; Alarcón-Fernández, Onofre; Jover, Rodrigo


    The strategies used in population-based colorectal screening strategies culminate in colonoscopy and consequently the success of these programs largely depends on the quality of this diagnostic test. The main factors to consider when evaluating quality are scientific-technical quality, safety, patient satisfaction, and accessibility. Quality indicators allow variability among hospitals, endoscopy units and endoscopists to be determined and can identify those not achieving recommended standards. In Spain, the working group for colonoscopy quality of the Spanish Society of Gastroenterology and the Spanish Society of Gastrointestinal Endoscopy have recently drawn up a Clinical Practice Guideline that contains the available evidence on the quality of screening colonoscopy, as well as the basic requirements that must be met by endoscopy units and endoscopists carrying out this procedure. The implementation of training programs and screening colonoscopy quality controls are strongly recommended to guarantee the success of population-based colorectal cancer screening. Copyright © 2013 Elsevier España, S.L. and AEEH y AEG. All rights reserved.

  18. [What is the methodological quality of articles on therapeutic procedures published in Cirugía Española?]. (United States)

    Manterola, Carlos; Busquets, Juli; Pascual, Marta; Grande, Luis


    The aim of this study was to determine the methodological quality of articles on therapeutic procedures published in Cirugía Española and to study its association with the publication year, center, and subject-matter. A bibliometric study that included all articles on therapeutic procedures published in Cirugía Española between 2001 and 2004 was performed. All kinds of clinical designs were considered, excluding editorials, review articles, letters to editor, and experimental studies. The variables analyzed were: year of publication, center, design, and methodological quality. Methodological quality was determined by a valid and reliable scale. Descriptive statistics (calculation of means, standard deviation and medians) and analytical statistics (Pearson's chi2, nonparametric, ANOVA and Bonferroni tests) were used. A total of 244 articles were studied (197 case series [81%], 28 cohort studies [12%], 17 clinical trials [7%], 1 cross sectional study and 1 case-control study [0.8%]). The studies were performed mainly in Catalonia and Murcia (22% and 16%, respectively). The most frequent subject areas were soft tissue and hepatobiliopancreatic surgery (23% and 19%, respectively). The mean and median of the methodological quality score calculated for the entire series was 10.2 +/- 3.9 points and 9.5 points, respectively. Methodological quality significantly increased by publication year (p < 0.001). An association between methodological quality and subject area was observed but no association was detected with the center performing the study. The methodological quality of articles on therapeutic procedures published in Cirugía Española between 2001 and 2004 is low. However, a statistically significant trend toward improvement was observed.

  19. Extracellular quality control in the epididymis

    Institute of Scientific and Technical Information of China (English)

    Gail A. Cornwall; H. Henning von Horsten; Douglas Swartz; Seethal Johnson; Kim Chau; Sandra Whelly


    The epididymal lumen represents a unique extracellular environment because of the active sperm maturation process that takes place within its confines. Although much focus has been placed on the interaction of epididymal secretory proteins with spermatozoa in the lumen, very little is known regarding how the complex epididymal milieu as a whole is maintained, including mechanisms to prevent or control proteins that may not stay in their native folded state following secretion. Because some misfolded proteins can form cytotoxic aggregate structures known as amyloid, it is likely that control/surveillance mechanisms exist within the epididymis to protect against this process and allow sperm maturation to occur. To study protein aggregation and to identify extracellular quality control mechanisms in the epididymis, we used the cystatin family of cysteine protease inhibitors, including cystatin-related epididymal spermatogenic and cystatin C as molecular models because both proteins have inherent properties to aggregate and form amyloid. In this chapter, we present a brief summary of protein aggregation by the amyloid pathway based on what is known from other organ systems and describe quality control mechanisms that exist intracellularly to control protein misfolding and aggregation. We then present a summary of our studies of cystatinrelated epididymal spermatogenic (CRES) oligomerization within the epididymal lumen, including studies suggesting that transglutaminase cross-linking may be one mechanism of extracellular quality control within the epididymis.

  20. Outsourcing University Degrees: Implications for Quality Control (United States)

    Edwards, Julie; Crosling, Glenda; Edwards, Ron


    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…

  1. Outsourcing University Degrees: Implications for Quality Control (United States)

    Edwards, Julie; Crosling, Glenda; Edwards, Ron


    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…

  2. Quality control in diagnostic immunohistochemistry: integrated on-slide positive controls. (United States)

    Bragoni, A; Gambella, A; Pigozzi, S; Grigolini, M; Fiocca, R; Mastracci, L; Grillo, F


    Standardization in immunohistochemistry is a priority in modern pathology and requires strict quality control. Cost containment has also become fundamental and auditing of all procedures must take into account both these principles. Positive controls must be routinely performed so that their positivity guarantees the appropriateness of the immunohistochemical procedure. The aim of this study is to develop a low cost (utilizing a punch biopsy-PB-tool) procedure to construct positive controls which can be integrated in the patient's tissue slide. Sixteen frequently used control blocks were selected and multiple cylindrical samples were obtained using a 5-mm diameter punch biopsy tool, separately re-embedding them in single blocks. For each diagnostic immunoreaction requiring a positive control, an integrated PB-control section (cut from the appropriate PB-control block) was added to the top right corner of the diagnostic slide before immunostaining. This integrated control technique permitted a saving of 4.75% in total direct lab costs and proved to be technically feasible and reliable. Our proposal is easy to perform and within the reach of all pathology labs, requires easily available tools, its application costs is less than using external paired controls and ensures that a specific control for each slide is always available.

  3. Statistical quality control through overall vibration analysis (United States)

    Carnero, M. a. Carmen; González-Palma, Rafael; Almorza, David; Mayorga, Pedro; López-Escobar, Carlos


    The present study introduces the concept of statistical quality control in automotive wheel bearings manufacturing processes. Defects on products under analysis can have a direct influence on passengers' safety and comfort. At present, the use of vibration analysis on machine tools for quality control purposes is not very extensive in manufacturing facilities. Noise and vibration are common quality problems in bearings. These failure modes likely occur under certain operating conditions and do not require high vibration amplitudes but relate to certain vibration frequencies. The vibration frequencies are affected by the type of surface problems (chattering) of ball races that are generated through grinding processes. The purpose of this paper is to identify grinding process variables that affect the quality of bearings by using statistical principles in the field of machine tools. In addition, an evaluation of the quality results of the finished parts under different combinations of process variables is assessed. This paper intends to establish the foundations to predict the quality of the products through the analysis of self-induced vibrations during the contact between the grinding wheel and the parts. To achieve this goal, the overall self-induced vibration readings under different combinations of process variables are analysed using statistical tools. The analysis of data and design of experiments follows a classical approach, considering all potential interactions between variables. The analysis of data is conducted through analysis of variance (ANOVA) for data sets that meet normality and homoscedasticity criteria. This paper utilizes different statistical tools to support the conclusions such as chi squared, Shapiro-Wilks, symmetry, Kurtosis, Cochran, Hartlett, and Hartley and Krushal-Wallis. The analysis presented is the starting point to extend the use of predictive techniques (vibration analysis) for quality control. This paper demonstrates the existence

  4. Quality control tools applied to a PV microgrid in Ecuador

    Energy Technology Data Exchange (ETDEWEB)

    Camino-Villacorta, M.; Egido-Aguilera, M.A. [Ciudad Univ., Madrid (Spain). Inst. de Energia Solar - UPM; Gamez, J.; Arranz-Piera, P. [Trama Tecnoambiental (TTA), Barcelona (Spain)


    The Instituto de Energia Solar has been dealing with quality control issues for rural electrification for many years. In the framework of project DOSBE (Development of Electricity Service Operators for Poverty Alleviation in Ecuador and Peru), a technical toolkit has been developed to implement adapted integral quality control procedures for photovoltaic systems (covering all components and equipment, installation and servicing), applicable at a local and regional scale, with the overall aim of increasing the confidence in photovoltaic systems. This toolkit was applied in the evaluation of an existing microgrid in Ecuador, which is described in this paper. The toolkit and the detailed results of its application are presented in a published document which is being widely distributed among the stakeholders of rural electrification in Ecuador and Peru. It can be downloaded from the web page of the DOSBE project: (orig.)

  5. Sap flow sensors: construction, quality control and comparison. (United States)

    Davis, Tyler W; Kuo, Chen-Min; Liang, Xu; Yu, Pao-Shan


    This work provides a design for two types of sensors, based on the thermal dissipation and heat ratio methods of sap flow calculation, for moderate to large scale deployments for the purpose of monitoring tree transpiration. These designs include a procedure for making these sensors, a quality control method for the final products, and a complete list of components with vendors and pricing information. Both sensor designs were field tested alongside a commercial sap flow sensor to assess their performance and show the importance for quality controlling the sensor outputs. Results show that for roughly 2% of the cost of commercial sensors, self-made sap flow sensors can provide acceptable estimates of the sap flow measurements compared to the commercial sensors.

  6. Embedding Procedure Assistance into Mission Control Tools Project (United States)

    National Aeronautics and Space Administration — Procedures are the accepted means of commanding spacecraft. Procedures encode the operational knowledge of a system as derived from system experts, testing, training...

  7. The quality of procedures to assess and credit prior learning: Implications for design.

    NARCIS (Netherlands)

    Joosten-ten Brinke, Desirée; Sluijsmans, Dominique; Brand-Gruwel, Saskia; Jochems, Wim


    Joosten-ten Brinke, D., Sluijsmans, D. M. A., Brand-Gruwel, S., & Jochems, W. M. G. (2008). The quality of procedures to assess and credit prior learning: Implications for design. Educational Research Review, 3, 51-65. doi:10.1016/j.edurev.2007.08.001.

  8. Evaluation of the Indoor Air Quality Procedure for Use in Retail Buildings

    Energy Technology Data Exchange (ETDEWEB)

    Dutton, Spencer M. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Chan, Wanyu R. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Mendell, Mark J. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Barrios, Marcella [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Parthasarathy, Srinandini [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Sidheswaran, Meera [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Sullivan, Douglas P. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Eliseeva, Katerina [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fisk, William J. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)


    showed that for the big box store and 11 of the 12 other stores, neither current measured VRs nor the Title 24-prescribed VRs would be sufficient to maintain indoor concentrations of all CoCs below RELs. In the intervention study, with the IAQP-based VR applied in the big box store, all CoCs were controlled below RELs (within margins of error). Also, at all three VRs in this store, the percentage of subjects reporting acceptable air quality exceeded an 80% criterion of acceptability. The IAQP allows consideration of outdoor air ventilation as just one of several possible tools for achieving adequate IAQ. In two of the 13 surveyed buildings, applying the IAQP to allow lower VRs could have saved energy whilst still maintaining acceptable indoor air quality. In the remaining 11 buildings, saving energy through lower VRs would require combination with other strategies, either reducing indoor sources of CoCs such as formaldehyde, or use of gas phase air cleaning technologies. Based on the findings from applying the IAQP calculations to retail stores and the IAQP-based intervention study, recommendations are made regarding the potential introduction of a comparable procedure in Title 24.

  9. 42 CFR 84.41 - Quality control plans; contents. (United States)


    ... 42 Public Health 1 2010-10-01 2010-10-01 false Quality control plans; contents. 84.41 Section 84... AND HEALTH RESEARCH AND RELATED ACTIVITIES APPROVAL OF RESPIRATORY PROTECTIVE DEVICES Quality Control § 84.41 Quality control plans; contents. (a) Each quality control plan shall contain provisions for...

  10. 30 CFR 28.30 - Quality control plans; filing requirements. (United States)


    ... 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...

  11. 42 CFR 84.40 - Quality control plans; filing requirements. (United States)


    ... 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...

  12. 21 CFR 211.22 - Responsibilities of quality control unit. (United States)


    ... 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...

  13. CR mammography: Design and implementation of a quality control program

    Energy Technology Data Exchange (ETDEWEB)

    Moreno-Ramirez, A.; Brandan, M. E.; Villasenor-Navarro, Y.; Galvan, H. A.; Ruiz-Trejo, C. [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, DF 04510 (Mexico); Departamento de Radiodiagnostico, Instituto Nacional de Cancerologia, DF 14080 (Mexico); Instituto de Fisica, Universidad Nacional Autonoma de Mexico, DF 04510 (Mexico)


    Despite the recent acquisition of significant quantities of computed radiography CR equipment for mammography, Mexican regulations do not specify the performance requirements for digital systems such as those of CR type. The design of a quality control program QCP specific for CR mammography systems was thus considered relevant. International protocols were taken as reference to define tests, procedures and acceptance criteria. The designed QCP was applied in three CR mammography facilities. Important deficiencies in spatial resolution, noise, image receptor homogeneity, artifacts and breast thickness compensation were detected.

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

    Energy Technology Data Exchange (ETDEWEB)

    Lahmann, E.


    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)

  15. Control of Bank Consolidated Financial Statements Quality

    Directory of Open Access Journals (Sweden)

    Margarita S. Ambarchyan


    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

  16. Prepackaged central line kits reduce procedural mistakes during central line insertion: a randomized controlled prospective trial. (United States)

    Fenik, Yelena; Celebi, Nora; Wagner, Robert; Nikendei, Christoph; Lund, Frederike; Zipfel, Stephan; Riessen, Reimer; Weyrich, Peter


    Central line catheter insertion is a complex procedure with a high cognitive load for novices. Providing a prepackaged all-inclusive kit is a simple measure that may reduce the cognitive load. We assessed whether the use of prepackaged all-inclusive central line insertion kits reduces procedural mistakes during central line catheter insertion by novices. Thirty final year medical students and recently qualified physicians were randomized into two equal groups. One group used a prepackaged all-inclusive kit and the other used a standard kit containing only the central vein catheter and all other separately packaged components provided in a materials cart. The procedure was videotaped and analyzed by two blinded raters using a checklist. Both groups performed central line catheter insertion on a manikin, assisted by nursing students. The prepackaged kit group outperformed the standard kit group in four of the five quality indicators: procedure duration (26:26 ± 3:50 min vs. 31:27 ± 5:57 min, p = .01); major technical mistakes (3.1 ± 1.4 vs. 4.8 ± 2.6, p = .03); minor technical mistakes (5.2 ± 1.7 vs. 8.0 ± 3.2, p = .01); and correct steps (83 ± 5% vs. 75 ± 11%, p = .02). The difference for breaches of aseptic technique (1.2 ± 0.8 vs. 3.0 ± 3.6, p = .06) was not statistically significant. Prepackaged all-inclusive kits for novices improved the procedure quality and saved staff time resources in a controlled simulation environment. Future studies are needed to address whether central line kits also improve patient safety in hospital settings.

  17. Decision-making Void of Democratic Qualities? An Evaluation of the EU’s Second Pillar Decision-making Procedure

    Directory of Open Access Journals (Sweden)

    Anne Elizabeth Stie


    Full Text Available The EU’s foreign and security policy is often criticised for being undemocratic. In this article, this contention is addressed from the perspective of deliberative democracy. The focus is on the procedural qualities of the second pillar decision-making processes as it is not only the quality of the outcomes that determine the democratic legitimacy of policy-making, but also the way that decisions have come about. Against five criteria, the EU’s second pillar procedure is assessed for its putative lack of democratic qualities. The analysis shows that not only does the second pillar lack parliamentary input, but the procedural set-up also violates basic democratic principles. There is no democratic deliberative forum to which citizens have access and where decision-makers must justify their positions. There is a serious absence of democratically elected participants to counter the vast number of bureaucrats, and the level of secrecy through which decisions are made is almost absolute. Furthermore, there is no separation of powers due to the fact that the same working groups prepare the second pillar items for both the Council and European Council, allowing the two bodies to lead an almost symbiotic coexistence. This impermeable unity controls agenda-setting, policy-formulation and execution, and hence also escapes both parliamentary and judicial scrutiny.

  18. Mitochondrial quality control in cardiac diseases.

    Directory of Open Access Journals (Sweden)

    Juliane Campos


    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.

  19. Microbiological Quality Control of Probiotic Products


    Astashkina, Anna Pavlovna; Khudyakova, L. I.; Kolbysheva, Yuliya Vladimirovna


    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...

  20. Towards quality control of food using terahertz (United States)

    Ung, B. S.-Y.; Fischer, B. M.; Ng, B. W.-H.; Abbott, D.


    Terahertz radiation or T-rays, show promise in quality control of food products. As T-rays are inherently sensitive to water, they are very suitable for moisture detection. This proves to be a valuable asset in detecting the moisture content of dried food, a critical area for some products. As T-rays are transparent to plastics, food additives can also be probed through the packaging, providing checks against a manufacturer's claims, such as the presence of certain substances in foods.

  1. Quality control analytical methods: strategies to ensure a robust quality-control microbiology program. (United States)

    Griffiths, Tricia; Connors, Anne


    As the regulatory environment for compounding pharmacies continues to evolve, facilities can take immediate steps to strengthen their quality-control microbiology and environmental monitoring programs. Robust programs that are timely, comprehensive, and effective will minimize risk and help support positive patient outcomes. This article provides a roadmap for putting in place a robust quality-control microbiology program in the face of United States Pharmacopeia Chapter 797 standards, and highlights several technologies for environmental monitoring that support a successful program.

  2. Procedure for the Management control with process approach at the Dairy Products Company Río Zaza Sancti Spiritus.

    Directory of Open Access Journals (Sweden)

    Madelaine Herrera Carriles


    Full Text Available In this research work we propose a procedure for the management control with process approaches to quality continuing improvement approaches at the Dairy Products Company Río Zaza Sancti Spíritus. Improvement opportunities were detected after measuring economical and productive parameters of commercialization process. The procedure includes techniques and tools such as Kendall coefficient, questionnaire, SWOT matrix (Weaknesses, Threats, Strengths, Opportunities, process management, process map, flow diagrams, process chip, Pareto diagram, strategic alignment matrix, balanced scorecard and the Deming cycle. The integration of strategic deployment, the process approaches; balanced scorecard in the procedure of management control contributed to the continuous improvement of quality evaluated by means of the indicators monitoring. It was possible to lower the billing cycle to 45 days and to have an increment of 2.2 MP from the total revenues.

  3. Possibilities of obtaining and controlling high-quality pressure castings

    Directory of Open Access Journals (Sweden)

    S. Pietrowski


    Full Text Available The paper presents the influence of the type of furnace charging melting, refining and modification silumins 226 and 231 on the porosity and microstructure of castings. It was shown that in order to reduce or eliminate the porosity of the castings is necessary to the refining ECOSAL-AL113 of liquid silumin both in the melting furnace, and in the ladle and an additional nitrogen, in the heat furnace modified and refining with nitrogen. To control the effects of refining and modifying the TDA method was used. It was found that based on crystal- lization curve can be qualitatively assess the gas porosity of the castings. In order to control and quality control silumins author developed a computer program using the method of TDA, which sets out: Rm, A5, HB and casting porosity P and the concentration of hydrogen in them. The program also informs the technological procedures to be performed for liquid silumin improper preparation.

  4. Quality control in digital mammography: the noise components

    Energy Technology Data Exchange (ETDEWEB)

    Leyton, Fernando [Universidade de Tarapaca, Arica (Chile). Centro de Estudios en Ciencias Radiologicas; Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil); Nogueira, Maria do Socorro, E-mail: mnogue@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil); Duran, Maria Paz [Clinica Alemana, Santiago (Chile). Dept. de Radiologia; Dantas, Marcelino, E-mail: [Industrias Nucleares do Brasil (INB), Caldas, MG (Brazil). Unidade de Tratamento de Minerios; Ubeda, Carlos, E-mail: cubeda@uta.c [Universidade de Tarapaca, Arica (Chile). Fac. de Ciencias de la Salud


    To measure the linearity of the detector and determine the noise components (quantum, electronic and structural noise) that contributed to losing image quality and to determine the signal noise ratio (SNR) and contrast noise ratio (CNR). This paper describes the results of the implementation of a protocol for quality control in digital mammography performed in two direct digital mammography equipment (Hologic, Selenia) in Santiago of Chile. Shows the results of linearity and noise analysis of the images which establishes the main cause of noise in the image of the mammogram to ensure the quality and optimize procedures. The study evaluated two digital mammography's Selenia, Hologic (DR) from Santiago, Chile. We conducted the assessment of linearity of the detector, the signal noise ratio, contrast noise ratio and was determined the contribution of different noise components (quantum, electronics and structural noise). Used different thicknesses used in clinical practice according to the protocol for quality control in digital mammography of Spanish society of medical physics and NHSBSP Equipment Report 0604 Version 3. The Selenia mammography software was used for the analysis of images and Unfors Xi detector for measuring doses. The mammography detector has a linear performance, the CNR and SNR did not comply with the Protocol for the thicknesses of 60 and 70 mm. The main contribution of the noise corresponds to the quantum noise, therefore it is necessary to adjust and optimize the mammography system. (author)

  5. Predictive models of procedural human supervisory control behavior (United States)

    Boussemart, Yves

    Human supervisory control systems are characterized by the computer-mediated nature of the interactions between one or more operators and a given task. Nuclear power plants, air traffic management and unmanned vehicles operations are examples of such systems. In this context, the role of the operators is typically highly proceduralized due to the time and mission-critical nature of the tasks. Therefore, the ability to continuously monitor operator behavior so as to detect and predict anomalous situations is a critical safeguard for proper system operation. In particular, such models can help support the decision J]l8king process of a supervisor of a team of operators by providing alerts when likely anomalous behaviors are detected By exploiting the operator behavioral patterns which are typically reinforced through standard operating procedures, this thesis proposes a methodology that uses statistical learning techniques in order to detect and predict anomalous operator conditions. More specifically, the proposed methodology relies on hidden Markov models (HMMs) and hidden semi-Markov models (HSMMs) to generate predictive models of unmanned vehicle systems operators. Through the exploration of the resulting HMMs in two distinct single operator scenarios, the methodology presented in this thesis is validated and shown to provide models capable of reliably predicting operator behavior. In addition, the use of HSMMs on the same data scenarios provides the temporal component of the predictions missing from the HMMs. The final step of this work is to examine how the proposed methodology scales to more complex scenarios involving teams of operators. Adopting a holistic team modeling approach, both HMMs and HSMMs are learned based on two team-based data sets. The results show that the HSMMs can provide valuable timing information in the single operator case, whereas HMMs tend to be more robust to increased team complexity. In addition, this thesis discusses the

  6. Procedure for implementing the system of quality management in the testing laboratory of the Center for Genetic Engineering and Biotechnology in Sancti Spiritus.

    Directory of Open Access Journals (Sweden)

    Lídice Peraza Cruz


    Full Text Available Implementation of Quality Management System in testing laboratories offers the possibility of its accreditation and a frame for cooperation with other organizations, supporting information and experience exchange, as well as standards and procedures harmonization. To improve the performance of the Center for Genetic Engineering and Biotechnology of Sancti Spíritus testing laboratory, assuring technically valid data and results which promote technical competence and credibility of in vitro diagnostics and biological reagents products, a procedure was designed to implement a Quality Management System. This procedure applies Deming´s Quality Cycle and considers all relevant requirements in NC ISO/IEC 17025:2006 “General requirements for the competence of testing and calibration laboratories” and Regulation No. 20 2004 “Good Manufacturing Practices for in vitro Diagnostics” of Center for State Control of Drugs, Equipment and Medical Devices. We recommend an auto evaluation method, designed by authors, to verify quality management system accomplishment.

  7. Control of quality in spectrometry gamma of low level

    CERN Document Server

    Salazar, A


    Low level gamma spectrometry is a very precise technique to measure the concentration of nuclides present in different samples in Bq kg sup - sup 1. The quality control of the procedure and method used can be carried out by intercomparison exercises with world recognized institutions. During the last three years the Nuclear Physics Laboratory Of The University of Costa Rica (LAFNA) has been participating in the international quality assessment program (QAP) carried out by the Environmental Measurements Laboratory (EML), department of Energy, USA. The results show a very good agreement with the rest of the participant laboratories. This provides a very objective evaluation of the high precision of the methods used by LAFNA in low level spectroscopy measurements. (Author)

  8. A Comparison of Exposure Control Procedures in CATs Using the 3PL Model (United States)

    Leroux, Audrey J.; Lopez, Myriam; Hembry, Ian; Dodd, Barbara G.


    This study compares the progressive-restricted standard error (PR-SE) exposure control procedure to three commonly used procedures in computerized adaptive testing, the randomesque, Sympson-Hetter (SH), and no exposure control methods. The performance of these four procedures is evaluated using the three-parameter logistic model under the…

  9. Application Comparison of Two Source of Allowable Total Errors inσMetrics Assessing the Analytical Quality and Selecting Quality Control Procedures for Automated Clinical Chemistry%国内两种允许总误差标准在评估临床化学检测项目分析质量及选择质控程序中的应用比较

    Institute of Scientific and Technical Information of China (English)

    张路; 王薇; 王治国


    evaluate the difference of two sources of allowable total errors provided by National Health Industry Standard (WS/T 403-2012,analytical quality specification for routine analytes in clinical biochemistry)and National Stand-ard (GB/T 20470-2006,requirements of external quality assessment for clinical laboratories)in assessing the analytical qual-ity byσmetrics,and selecting quality control procedures using operational process specifications graphs.Methods Selected one of the laboratories participating in the internal quality control activity of routine chemistry of February,2014 and the first time external quality assessment activity of routine chemistry in 2014 organized by National Center for Clinical Labora-tories for its coefficient of variation and the bias of nineteen clinical chemistry tests.With the CV% and Bia%,σmetrics of controls at two analyte concentrations were calculated using two different allowable total errors targets (National Health In-dustry Standard (WS/T 403-2012)and National Standard (GB/T 20470-2006).Could obtain a operational process specifica-tions graph by which Could select quality control procedures using the Quality control computer simulat software developed by National Center for Clinical Laboratories and the company zhongchuangyida.Results The σ metrics under National Health Industry Standard (WS/T 403-2012)were from 0 to 7.Most of the values (86% and 76.2%)under National Stand-ard (GB/T 20470-2006)were from 3 to 15.On the normalized method decision chart,the assay quality using the allowable total errors targets of National Standard (GB/T 20470-2006)was at least one hierarchy more than one using National Health Industry Standard (WS/T 403-2012).The quality control rules under National Health Industry Standard (WS/T 403-2012)were obviously more strict than that under National Standard (GB/T 20470-2006).Among the control procedures using National Health Industry Standard (WS/T 403-2012),multirule (n=4):ALB,ALP,Ca,Cl,TC,Crea,Glu,LDH,K, Na

  10. Adaptive quality control for multimedia communications

    Directory of Open Access Journals (Sweden)

    Santichai Chuaywong


    Full Text Available Multimedia communications are communications with several types of media, such as audio, video and data. The current Internet has some levels of capability to support multimedia communications, unfortunately, the QoS (Quality of Service is still challenging. A large number of QoS mechanisms has been proposed; however, the main concern is for low levels, e.g. layer 2 (Data Link or 3 (Transport. In this paper, mechanisms for control the quality of audio and video are proposed. G.723.1 and MPEG-4 are used as the audio and video codec respectively. The proposed algorithm for adaptive quality control of audio communication is based on forward error correction (FEC. In the case of video communication, the proposed algorithm adapts the value of key frame interval, which is an encoding parameter of MPEG-4. We evaluated our proposed algorithms by computer simulation. We have shown that, in most cases, the proposed scheme gained a higher throughput compared to other schemes.

  11. 42 CFR 457.495 - State assurance of access to care and procedures to assure quality and appropriateness of care. (United States)


    ... 42 Public Health 4 2010-10-01 2010-10-01 false State assurance of access to care and procedures to assure quality and appropriateness of care. 457.495 Section 457.495 Public Health CENTERS FOR MEDICARE... State assurance of access to care and procedures to assure quality and appropriateness of care. A...

  12. Incorporating metrological calibration procedures to improve temperature data series quality and ensure their traceability (United States)

    Gilabert, Alba; Brunet, Manola; Lopardo, Giuseppina; Merlone, Andrea; Jones, Philip; Bertiglia, Fabio; Aguilar, Enric


    Climate data series quality depends on many factors, one of them being time-series homogeneity, although it also depends on the traceability of the observations. In the last decades, many efforts to improve homogenisation methods efficiency have been developed, but most of these studies do not take into account the traceability of the measurements nor estimates of the uncertainty budget of climate records. In general, meteorological agencies only carry out a few comparisons to determine whether the sensor is correctly working or not, but they do not perform any complete traceable procedures to ensure the data are being measured in accordance to national standards. In 2010 the World Meteorological Organisation (WMO) and the Bureau International des Poids et Mesures (BIPM) started a joint cooperation to encourage the adoption of metrological procedures. Under the umbrella of the Research Grant (ENV07/REG05) in support of the parent EMRP MeteoMet (Metrology for Meteorology) project, different temperature sensors traceable to primary standards have been installed in different field trials. One of these has been set at the Ebro's Observatory (Roquetes, northeast Spain), to explore the potential bias introduced in temperature series associated with the changeover to automatic weather stations (AWS) in relation with the Spanish project CGL2012-32193 and also to determine the impact of introducing metrological calibration procedures according to national standards on climate data series quality. In this contribution, we will show and discuss the results from parallel measurements taken with conventional thermometers (liquid-in-glass thermometers) and AWS sensors, by taking into account or not the calibration procedures. We also estimate the uncertainty budget, and we will show the effects of periodically adopting metrological calibration procedures to improve climate time-series quality.

  13. Should Title 24 Ventilation Requirements Be Amended to include an Indoor Air Quality Procedure?

    Energy Technology Data Exchange (ETDEWEB)

    Dutton, Spencer M.; Mendell, Mark J.; Chan, Wanyu R.


    Minimum outdoor air ventilation rates (VRs) for buildings are specified in standards, including California?s Title 24 standards. The ASHRAE ventilation standard includes two options for mechanically-ventilated buildings ? a prescriptive ventilation rate procedure (VRP) that specifies minimum VRs that vary among occupancy classes, and a performance-based indoor air quality procedure (IAQP) that may result in lower VRs than the VRP, with associated energy savings, if IAQ meeting specified criteria can be demonstrated. The California Energy Commission has been considering the addition of an IAQP to the Title 24 standards. This paper, based on a review of prior data and new analyses of the IAQP, evaluates four future options for Title 24: no IAQP; adding an alternate VRP, adding an equivalent indoor air quality procedure (EIAQP), and adding an improved ASHRAE-like IAQP. Criteria were established for selecting among options, and feedback was obtained in a workshop of stakeholders. Based on this review, the addition of an alternate VRP is recommended. This procedure would allow lower minimum VRs if a specified set of actions were taken to maintain acceptable IAQ. An alternate VRP could also be a valuable supplement to ASHRAE?s ventilation standard.

  14. Quality control in exascale data archives (United States)

    Juckes, Martin


    Quality control of data can and should occur at many stages of the data life cycle. Data producers will generally conduct their own tests prior to release of data. Further tests may be done by within consortium projects, by archive centres or, after publication of the data, by independent investigators. The results of such tests are often used only by the individual or group carrying out the tests. Sharing of quality control information is restricted by many factors: this presentation addresses the lack of a common terminology to define quality control tests. A framework is proposed, based on abstract tests (e.g. a "prescribed range test"), specific tests (e.g. "variable tas is in the range 200-350K") and test results. Test results also need to be linked to the data robustly to ensure that they are available at all subsequent stages of the data lifecycle, and the appropriate mechanisms of linkage will differ at different stages of the lifecycle. The framework should support references to the data from the test results, references to the results from the data or discovery by association. Performing tests may generate useful by-products (e.g. the maximum and minimum values of the data): these ancillary results should be stored and made accessible with test results. In many cases tests will refer to multiple files, and groups of tests will be of more interest than individual tests. Mechanisms for describing tests suites will be discussed with particular reference to the challenges of applying tests to climate model data.

  15. [ROKO--computer-assisted roentgen quality control]. (United States)

    Schenk, G; Gfirtner, H


    To guarantee the quality of 30 x-ray machines and 8 photographic processors 24,000 data are collected yearly. A computer system is introduced (ROKO-Röntgenkonstanzprüfung) which helps to collect the monthly data easily and to measure on-line dose and voltage. If given tolerance values are exceeded acoustic and graphic warnings appear, a trend analysis is made to assure the correctness of the collected data, a generator to design the layout of check form facilitates the controlling and an on-line documentation for each x-ray machine is available. All these features help save time and money.

  16. 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


    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.

  17. Distributed Sensor Architecture for Intelligent Control that Supports Quality of Control and Quality of Service (United States)

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


    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. PMID:25723145

  18. Five Librarians Talk about Quality Control and the OCLC Database. (United States)

    Helge, Brian; And Others


    Five librarians considered authorities on quality cataloging in the OCLC Online Union Catalog were interviewed to obtain their views on the current level of quality control in the OCLC database, the responsibilities of OCLC and individual libraries in improving the quality of records, and the consequences of quality control problems. (CLB)

  19. 7 CFR 58.141 - Alternate quality control program. (United States)


    ... 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...

  20. A model for analysing factors which may influence quality management procedures in higher education

    Directory of Open Access Journals (Sweden)

    Cătălin MAICAN


    Full Text Available In all universities, the Office for Quality Assurance defines the procedure for assessing the performance of the teaching staff, with a view to establishing students’ perception as regards the teachers’ activity from the point of view of the quality of the teaching process, of the relationship with the students and of the assistance provided for learning. The present paper aims at creating a combined model for evaluation, based on Data Mining statistical methods: starting from the findings revealed by the evaluations teachers performed to students, using the cluster analysis and the discriminant analysis, we identified the subjects which produced significant differences between students’ grades, subjects which were subsequently subjected to an evaluation by students. The results of these analyses allowed the formulation of certain measures for enhancing the quality of the evaluation process.

  1. Quality control of laser tailor welded blanks (United States)

    Yan, Qi


    Tailor welded blanks were widely used in the automobile industry for their special advantages. A combination of different materials, thickness, and coatings could be welded together to form a blank for stamping car body panels. With the gradually growing consciousness on safety requirement of auto body structural, the business of laser tailor welded blanks is developing rapidly in China. Laser tailor welded blanks were just the semi products between steel factory and automobile manufacturers. As to the laser welding defects such as convexity and concavity, automobile industry had the strict requirement. In this paper, quality standard on laser tailor welded blanks were discussed. As for the production of laser tailor welded blanks, online quality control of laser tailor welded blanks was introduced. The image processing system for welding laser positioning and weld seam monitoring were used in the production of laser tailor welded blanks. The system analyzes images from the individual cameras and transmits the results to the machine control system via a CAN bus.

  2. Quality control for invasive cardiology: Holland. (United States)

    Plokker, H W


    Although no official registration of indications, treatments and results in patients with coronary heart disease has taken place in Holland, the following authorities and commissions have introduced guidelines for quality control: the Dutch government, the Dutch Society of Cardiology, the Working Group on Interventional Cardiology and the health insurers. Until 1991, the right to perform coronary interventions was tied to a license issued by the Ministry of Health. New recommendations were delineated 5 years ago: at least 500 interventions must be annually performed by 5 interventional cardiologists, i.e. ca. 100 interventions annually per cardiologist. No interventional cardiology may be performed without an in-house cardiac surgery and vice versa. In a survey by the Dutch Society of Cardiology on the quality of the Dutch centers, PTCA-mortality was ca. 0.3%, infarction rate was ca. 2%. An emergency bypass operation was necessary in 1.0 to 1.6% of the cases; the surgical team was on immediate alert for 11% of the patients. Selection of patients without risk was deemed impossible. Despite objections by some members the Dutch Society of Cardiology, it was recommended that cardiac surgery and interventions should not be separated. Data from health insurers showed no inappropriate indications for PTCA. The DUCAT-study, which used the RAND criteria, showed PTCA indications to be correct in more than 90% of the cases. The Dutch government wants to control the expansion of PTCA centers, so it is no wonder that waiting lists are becoming longer.

  3. Perioperative outcomes for pediatric neurosurgical procedures: analysis of the National Surgical Quality Improvement Program-Pediatrics. (United States)

    Kuo, Benjamin J; Vissoci, Joao Ricardo N; Egger, Joseph R; Smith, Emily R; Grant, Gerald A; Haglund, Michael M; Rice, Henry E


    OBJECTIVE Existing studies have shown a high overall rate of adverse events (AEs) following pediatric neurosurgical procedures. However, little is known regarding the morbidity of specific procedures or the association with risk factors to help guide quality improvement (QI) initiatives. The goal of this study was to describe the 30-day mortality and AE rates for pediatric neurosurgical procedures by using the American College of Surgeons (ACS) National Surgical Quality Improvement Program-Pediatrics (NSQIP-Peds) database platform. METHODS Data on 9996 pediatric neurosurgical patients were acquired from the 2012-2014 NSQIP-Peds participant user file. Neurosurgical cases were analyzed by the NSQIP-Peds targeted procedure categories, including craniotomy/craniectomy, defect repair, laminectomy, shunts, and implants. The primary outcome measure was 30-day mortality, with secondary outcomes including individual AEs, composite morbidity (all AEs excluding mortality and unplanned reoperation), surgical-site infection, and unplanned reoperation. Univariate analysis was performed between individual AEs and patient characteristics using Fischer's exact test. Associations between individual AEs and continuous variables (duration from admission to operation, work relative value unit, and operation time) were examined using the Student t-test. Patient characteristics and continuous variables associated with any AE by univariate analysis were used to develop category-specific multivariable models through backward stepwise logistic regression. RESULTS The authors analyzed 3383 craniotomy/craniectomy, 242 defect repair, 1811 laminectomy, and 4560 shunt and implant cases and found a composite overall morbidity of 30.2%, 38.8%, 10.2%, and 10.7%, respectively. Unplanned reoperation rates were highest for defect repair (29.8%). The mortality rate ranged from 0.1% to 1.2%. Preoperative ventilator dependence was a significant predictor of any AE for all procedure groups, whereas

  4. 34 CFR 75.702 - Fiscal control and fund accounting procedures. (United States)


    ... 34 Education 1 2010-07-01 2010-07-01 false Fiscal control and fund accounting procedures. 75.702 Section 75.702 Education Office of the Secretary, Department of Education DIRECT GRANT PROGRAMS What Are... Fiscal control and fund accounting procedures. A grantee shall use fiscal control and fund accounting...

  5. Radiation dose reduction without degrading image quality during computed tomography examinations: Dosimetry and quality control study

    Directory of Open Access Journals (Sweden)

    George Felix Acquah


    Full Text Available Purpose: Computed tomography (CT, is an X-ray procedure that generates high quality cross-sectional images of the body, and by comparison to other radiological diagnosis, is responsible for higher doses to patients. This work studies the doses and image qualities produced from the default primary scanning factors of a Siemens CT machine and afterwards came up with scanning protocols that allow radiologists to obtain the necessary diagnostic information while reducing radiation doses to as low as reasonably achievable. Methods: Approximately 1000 CT scans from mostly common examinations; head, thorax, abdomen and pelvis routines were selected and analyzed for their image quality and radiation doses over a two year interval. Dose measurements were performed for the same routines using Computed Tomography Dose Index (CTDI phantoms, RTI barracuda system with electrometer, and CT dose Profiler detector to evaluate the doses delivered during these CT procedures. Subsequently, image quality checks were performed using the CT Catphan 600 and anthropomorphic phantoms. CTDI and Dose Length Product (DLP values were calculated for each scan. From analyzing these measurements, the appropriate machine scanning parameters were adjusted to reduce radiation does while at the same time providing good image quality.Results: Doses to patients using the default head sequence protocol had an average CTDIvol value of 65.45 mGy and a range of 7.10-16.80 mGy for thorax, abdomen and pelvis examinations whiles the new protocol had an average CTDIvol of 58.32 mGy for the head and a range of 3.83-15.24 mGy for the truck region. The DLP value for default head scans decreased from an average of 2279.85 to 874.53 with the new protocol. Tube potentials (KV and tube current-time (mAs had an effect on spatial resolution and low contrast detectability as well as doses. Conclusion: From the new protocols, lower values of KV and mAs together with other factors were

  6. Controlling Pica by Components of an Overcorrection Procedure. (United States)

    Singh, Nirbhay N.; Winton, Alan S. W.


    The study showed that one of the components of an overcorrection procedure, oral hygiene, could eliminate pica (ingestion of inedible objects) by two retarded subjects when used alone. Although oral hygiene was the most effective component, each of the other components, tidying and personal hygiene, did decrease behavior. The oral hygiene…

  7. 21 CFR 640.56 - Quality control test for potency. (United States)


    ... 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 test for potency. (a) Quality control tests for potency of antihemophilic factor shall be...

  8. 7 CFR 275.21 - Quality control review reports. (United States)


    ... 7 Agriculture 4 2010-01-01 2010-01-01 false Quality control review reports. 275.21 Section 275.21... Reporting on Program Performance § 275.21 Quality control review reports. (a) General. Each State agency shall submit reports on the performance of quality control reviews in accordance with the...

  9. 14 CFR 145.211 - Quality control system. (United States)


    ... 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...

  10. 21 CFR 864.8625 - Hematology quality control mixture. (United States)


    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Hematology quality control mixture. 864.8625 Section 864.8625 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES... quality control mixture. (a) Identification. A hematology quality control mixture is a device used...

  11. 18 CFR 12.40 - Quality control programs. (United States)


    ... 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...

  12. Methodology of quality control for brachytherapy {sup 125}I seeds

    Energy Technology Data Exchange (ETDEWEB)

    Moura, Eduardo S.; Zeituni, Carlos A.; Manzoli, Jose E.; Rostelato, Maria Elisa C.M. [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)]. E-mail:


    This paper presents the methodology of quality control of {sup 125}I seeds used for brachytherapy. The {sup 125}I seeds are millimeter titanium capsules widely used in permanent implants of prostate cancer, allowing a high dose within the tumour and a low dose on the surrounding tissues, with very low harm to the other tissues. Besides, with this procedure, the patients have a low impotence rate and a small incidence of urinary incontinence. To meet the medical standards, an efficient quality control is necessary, showing values with the minimum uncertainness possible, concerning the seeds dimensions and their respective activities. The medical needles are used to insert the seeds inside the prostate. The needles used in brachytherapy have an internal diameter of 1.0 mm, so it is necessary {sup 125}I seeds with an external maximum diameter of 0.85 mm. For the seeds and the spacer positioning on the planning sheet, the seeds must have a length between 4.5 and 5.0 mm. The activities must not vary more than 5% in each batch of {sup 125}I seeds. For this methodology, we used two ionization chamber detectors and one caliper. In this paper, the methodology using one control batch with 75 seeds manufactured by GE Health care Ltd is presented. (author)

  13. Quality control for quantitative PCR based on amplification compatibility test. (United States)

    Tichopad, Ales; Bar, Tzachi; Pecen, Ladislav; Kitchen, Robert R; Kubista, Mikael; Pfaffl, Michael W


    Quantitative qPCR is a routinely used method for the accurate quantification of nucleic acids. Yet it may generate erroneous results if the amplification process is obscured by inhibition or generation of aberrant side-products such as primer dimers. Several methods have been established to control for pre-processing performance that rely on the introduction of a co-amplified reference sequence, however there is currently no method to allow for reliable control of the amplification process without directly modifying the sample mix. Herein we present a statistical approach based on multivariate analysis of the amplification response data generated in real-time. The amplification trajectory in its most resolved and dynamic phase is fitted with a suitable model. Two parameters of this model, related to amplification efficiency, are then used for calculation of the Z-score statistics. Each studied sample is compared to a predefined reference set of reactions, typically calibration reactions. A probabilistic decision for each individual Z-score is then used to identify the majority of inhibited reactions in our experiments. We compare this approach to univariate methods using only the sample specific amplification efficiency as reporter of the compatibility. We demonstrate improved identification performance using the multivariate approach compared to the univariate approach. Finally we stress that the performance of the amplification compatibility test as a quality control procedure depends on the quality of the reference set.

  14. Integrated quality control architecture for multistage machining processes (United States)

    Yang, Jie; Liu, Guixiong


    To solve problems concerning the process quality prediction control for the multistage machining processes, a integrated quality control architecture is proposed in this paper. First, a hierarchical multiple criteria decision model is established for the key process and the weight matrix method stratified is discussed. Predictive control of the manufacturing quality is not just for on-site monitoring and control layer, control layer in the enterprise, remote monitoring level of quality exists a variety of target predictive control demand, therefore, based on XML to achieve a unified description of manufacturing quality information, and in different source of quality information between agencies to achieve the transfer and sharing. This will predict complex global quality control, analysis and diagnosis data to lay a good foundation to achieve a more practical, open and standardized manufacturing quality with higher levels of information integration system.

  15. Efficiency of cleaning procedure of milking equipment and bacterial quality of milk

    Directory of Open Access Journals (Sweden)

    Anna Sandrucci


    Full Text Available The cleaning and sanitation of milking equipment could be consider a critical point in the milking procedure because a cleaning failure could influence the level of bacteria contamination of bulk tank milk. Aim of the study is to monitor the cleaning procedures of milking systems in 7 dairy cows farms in Lombardy and to find a relation between efficacy of cleaning system and the bacterial quality of bulk tank milk, remaining washing water through milking equipment and teat cup surface. Cleaning procedures were monitored with Lactocorder, that measured: duration, water temperature, turbulence, percentage of water in pipes, water conductivity of pre- and post-rinse and detergent phases. Results showed that the monitored farms the most of the cleaning parameters were lower than recommendations, in particular maximum water temperature (42.1±9.9°C and percentage of water during detergent phase (76.1±13.9 %. A maximum temperature of detergent phase <40°C determined a high Standard Plate Count (SPC, thermoduric bacteria and Coliform Count (CC of bulk tank milk, SPC and CC of teat cup surface. The research indicated that monitoring the efficiency of cleaning milking equipment with proper tools provide useful information about possible sources of contamination of bulk tank milk. Improving cleaning milking efficiency allow to improve milk quality.

  16. Managing Air Quality - Control Strategies to Achieve Air Pollution Reduction (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.

  17. Mechanical and dosimetric quality control for computer controlled radiotherapy treatment equipment. (United States)

    Thompson, A V; Lam, K L; Balter, J M; McShan, D L; Martel, M K; Weaver, T A; Fraass, B A; Ten Haken, R K


    Modern computer controlled radiotherapy treatment equipment offers the possibility of delivering complex, multiple field treatments with minimal operator intervention, thus making multiple field conformal therapy practical. Conventional quality control programs are inadequate for this new technology, so new quality control procedures are needed. A reasonably fast, sensitive, and complete daily quality control program has been developed in our clinic that includes nearly automated mechanical as well as dosimetric tests. Automated delivery of these quality control fields is performed by the control system of the MM50 racetrack microtron, directed by the CCRS sequence processor [D. L. McShan and B. A. Fraass, Proceedings of the XIth International Conference on the use of computers in Radiation Therapy, 20-24 March 1994, Manchester, U.K. (North Western Medical Physics Department, Manchester, U.K., 1994), pp. 210-211], which controls the treatment process. The mechanical tests involve multiple irradiations of a single film to check the accuracy and reproducibility of the computer controlled setup of gantry and collimator angles, table orientation, collimator jaws, and multileaf collimator shape. The dosimetric tests, which involve multiple irradiations of an array of ionization chambers in a commercial dose detector (Keithly model 90100 Tracker System) rigidly attached to the head of the treatment gantry, check the output and symmetry of the treatment unit as a function of gantry and collimator angle and other parameters. For each of the dosimetric tests, readings from the five ionization chambers are automatically read out, stored, and analyzed by the computer, along with the geometric parameters of the treatment unit for that beam.(ABSTRACT TRUNCATED AT 250 WORDS)

  18. Importance of critical evaluation in quality control of scintillation cameras;Importancia da avaliacao criteriosa no controle de qualidade de camaras de cintilacao

    Energy Technology Data Exchange (ETDEWEB)

    Menezes, V.O.; Machado, M.A.D.; Sampaio, L.J.L.; Silva, D.C. [Hospital Sao Rafael, Salvador, BR (Brazil)


    The evaluation of quality control results in nuclear medicine must be performed with a critical view over the conditions the tests are executed. This paper is a result of observations in the routine quality control where we set up didactic 'findings' to show the importance of evaluating critical situations while executing the procedures. (author)

  19. External quality control for embryology laboratories. (United States)

    Castilla, Jose Antonio; Ruiz de Assín, Rafael; Gonzalvo, Maria Carmen; Clavero, Ana; Ramírez, Juan Pablo; Vergara, Francisco; Martínez, Luis


    Participation in external quality control (EQC) programmes is recommended by various scientific societies. Results from an EQC programme for embryology laboratories are presented. This 5-year programme consisted of the annual delivery of (i) materials to test toxicity and (ii) a DVD/CD-ROM with images of zygotes and embryos on days 2 and 3, on the basis of which the participants were asked to judge the embryo quality and to take a clinical decision. A high degree of agreement was considered achieved when over 75% of the laboratories produced similar classifications. With respect to the materials analysed, the specificity was 68% and the sensitivity was 83%. Concerning embryo classification, the proportion of embryos on which a high degree of agreement was achieved increased during this period from 35% to 55%. No improvement was observed in the degree of agreement on the clinical decision to be taken. Day-3 embryos produced a higher degree of agreement (58%) than did day-2 embryos (32%) (Pembryology laboratories.

  20. Optimization of humidifying procedure in controlled environment for ...

    African Journals Online (AJOL)



    Nov 9, 2016 ... This study investigated mushroom cultivation in controlled indoor ... The total 261.8 kg mushroom was harvested from the controlled cultivation system, a fairly good ..... Computer and Computing Technologies in Agriculture VI.

  1. Study on Rear-end Real-time Data Quality Control Method of Regional Automatic Weather Station

    Institute of Scientific and Technical Information of China (English)


    [Objective] The aim was to study the rear-end real-time data quality control method of regional automatic weather station. [Method] The basic content and steps of rear-end real-time data quality control of regional automatic weather station were introduced. Each element was treated with systematic quality control procedure. The existence of rear-end real time data of regional meteorological station in Guangxi was expounded. Combining with relevant elements and linear changes, improvement based on traditiona...

  2. Development of a Quality Assurance Procedure for Dose Volume Histogram Analysis (United States)

    Davenport, David A.

    The role of the dose-volume histogram (DVH) is rapidly expanding in radiation oncology treatment planning. DVHs are already relied upon to differentiate between two similar plans and evaluate organ-at-risk dosage. Their role will become even more important as progress continues towards implementing biologically based treatment planning systems. Therefore it is imperative that the accuracy of DVHs is evaluated and reappraised after any major software or hardware upgrades, affecting a treatment planning system (TPS). The purpose of this work is to create and implement a comprehensive quality assurance procedure evaluating dose volume histograms to insure their accuracy while satisfying American College of Radiology guidelines. Virtual phantoms of known volumes were created in Pinnacle TPS and exposed to different beam arrangements. Variables including grid size and slice thickness were varied and their effects were analyzed. The resulting DVHs were evaluated by comparison to the commissioned percent depth dose values using a custom Excel spreadsheet. After determining the uncertainty of the DVH based on these variables, multiple second check calculations were performed using MIM Maestro and Matlab software packages. The uncertainties of the DVHs were shown to be less than +/- 3%. The average uncertainty was shown to be less than +/- 1%. The second check procedures resulted in mean percent differences less than 1% which confirms the accuracy of DVH calculation in Pinnacle and the effectiveness of the quality assurance template. The importance of knowing the limits of accuracy of the DVHs, which are routinely used to assess the quality of clinical treatment plans, cannot be overestimated. The developed comprehensive QA procedure evaluating the accuracy of the DVH statistical analysis will become a part of our clinical arsenal for periodic tests of the treatment planning system. It will also be performed at the time of commissioning and after any major software

  3. Risk Control Through the Use of Procedures - A Method for Evaluating the Change in Risk (United States)

    Praino, Gregory; Sharit, Joseph


    Organizations use procedures to influence or control the behavior of their workers, but often have no basis for determining whether an additional rule, or procedural control will be beneficial. This paper outlines a proposed method for determining if the addition or removal of procedural controls will impact the occurrences of critical consequences. The proposed method focuses on two aspects: how valuable the procedural control is, based on the inevitability of the consequence and the opportunity to intervene; and how likely the control is to fail, based on five procedural design elements that address how well the rule or control has been Defined, Assigned, Trained, Organized and Monitored-referred to as the DATOM elements

  4. Controller tuning with evolutionary multiobjective optimization a holistic multiobjective optimization design procedure

    CERN Document Server

    Reynoso Meza, Gilberto; Sanchis Saez, Javier; Herrero Durá, Juan Manuel


    This book is devoted to Multiobjective Optimization Design (MOOD) procedures for controller tuning applications, by means of Evolutionary Multiobjective Optimization (EMO). It presents developments in tools, procedures and guidelines to facilitate this process, covering the three fundamental steps in the procedure: problem definition, optimization and decision-making. The book is divided into four parts. The first part, Fundamentals, focuses on the necessary theoretical background and provides specific tools for practitioners. The second part, Basics, examines a range of basic examples regarding the MOOD procedure for controller tuning, while the third part, Benchmarking, demonstrates how the MOOD procedure can be employed in several control engineering problems. The fourth part, Applications, is dedicated to implementing the MOOD procedure for controller tuning in real processes.

  5. Automated Kick Control Procedure for an Influx in Managed Pressure Drilling Operations

    Directory of Open Access Journals (Sweden)

    Jing Zhou


    Full Text Available Within drilling of oil and gas wells, the Managed Pressure Drilling (MPD method with active control of wellbore pressure during drilling has partly evolved from conventional well control procedures. However, for MPD operations the instrumentation is typically more extensive compared to conventional drilling. Despite this, any influx of formation fluids (commonly known as a kick during MPD operations is typically handled by conventional well control methods, at least if the kick is estimated to be larger than a threshold value. Conventional well control procedures rely on manual control of the blow out preventer, pumps, and choke valves and do not capitalize on the benefits from the instrumentation level associated with MPD. This paper investigates two alternative well control procedures specially adapted to backpressure MPD: the dynamic shut-in (DSI procedure and the automatic kick control (AKC procedure. Both methods capitalize on improvements in Pressure While Drilling (PWD technology. A commercially available PWD tool buffers high-resolution pressure measurements, which can be used in an automated well control procedure. By using backpressure MPD, the choke valve opening is tuned automatically using a feedback-feedforward control method. The two procedures are evaluated using a high fidelity well flow model and cases from a North Sea drilling operation are simulated. The results show that using AKC procedure reduces the time needed to establish control of the well compared to DSI procedure. It also indicates that the AKC procedure reduces the total kick size compared to the DSI procedure, and thereby reduces the risk of lost circulation.

  6. The Quality Evaluation Method of Instrument Flight Procedure Design Scheme Based on Fuzzy Linguistic Assessments

    Directory of Open Access Journals (Sweden)

    Chen Ken


    Full Text Available The quality of Instrument Flight Procedure Design Scheme (QIFPDS is directly related to the terminal area airspace capacity, quality, efficiency of air traffic management, and even the safety of aircraft. Hence, the evaluation of QIFPDS has great significance in real life. However, the evaluation of QIFPDS in real work is mainly done by experts through their specific knowledge and experience, which usually leads to a bias result and inevitably contains subjectivity and arbitrary defects. In this paper, a multi-attribute group decision-making method is proposed. This method makes full use of evaluation information; objectively and effectively evaluate QIFPDS. Also in this paper, a mathematical model for this method is introduced and a detailed step to solve this model is listed. At the end of this paper, an example is given to show the effectiveness and feasibility of the method.  

  7. Test and measurement procedures to set up the Quality-/Energy-Matrix for UPS

    Energy Technology Data Exchange (ETDEWEB)

    Schnyder, G.; Mauchle, P.


    This comprehensive report for the Swiss Federal Office of Energy (SFOE) is one of a set of nine reports that provide an overall review of the energy-efficiency of UPS systems. This report takes a look at the test and energy-measurement procedures necessary for the setting up of a quality/energy matrix. General definitions applicable to all measurements are defined along with specific test definitions and measurement criteria for specific faults and failures caused, for example, by variations in supply frequency and transients. Also considered are the measurement of power-factors and distortions as well as losses and efficiency. The report is completed with an appendix concerning standards along with the quality/energy matrix form itself.

  8. Water-quality sampling by the U.S. Geological Survey-Standard protocols and procedures (United States)

    Wilde, Franceska D.


    Thumbnail of and link to report PDF (1.0 MB) The U.S. Geological Survey (USGS) develops the sampling procedures and collects the data necessary for the accurate assessment and wise management of our Nation's surface-water and groundwater resources. Federal and State agencies, water-resource regulators and managers, and many organizations and interested parties in the public and private sectors depend on the reliability, timeliness, and integrity of the data we collect and the scientific soundness and impartiality of our data assessments and analysis. The standard data-collection methods uniformly used by USGS water-quality personnel are peer reviewed, kept up-to-date, and published in the National Field Manual for the Collection of Water-Quality Data (

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

  10. 34 CFR 76.702 - Fiscal control and fund accounting procedures. (United States)


    ... 34 Education 1 2010-07-01 2010-07-01 false Fiscal control and fund accounting procedures. 76.702 Section 76.702 Education Office of the Secretary, Department of Education STATE-ADMINISTERED PROGRAMS What... Responsibilities § 76.702 Fiscal control and fund accounting procedures. A State and a subgrantee shall use fiscal...

  11. The medical practice of euthanasia in Belgium and The Netherlands: legal notification, control and evaluation procedures

    NARCIS (Netherlands)

    Smets, T.; Bilsen, J.J.; Cohen, J.; Rurup, M.L.; Keyser, E.; Deliens, L.H.J.


    OBJECTIVES: To describe and compare current legal procedures for notifying, controlling and evaluating (NCE-procedures) euthanasia in Belgium and the Netherlands, and to discuss the implications for a safe and controllable euthanasia practice. METHODS: We systematically studied and compared official

  12. Management of quality-assurance controls: decision support systems

    Energy Technology Data Exchange (ETDEWEB)

    Farrell, M.P.; Strand, R.H.


    Environmental research involved in the assessment of new coal conversion technologies must evaluate many biological, physical and chemical variables to determine environmental acceptability. Inherent in these studies is the use of quality assurance controls to evaluate data base entries, analytical procedures, and program productivity. However, quality assurance controls implemented at the project level are seldom known in detail and/or evaluated when making resource management decisions at the program level. This paper presents a computer based decision support system that assists in management level integration of complex environmental research. The DSS is modeled after an open-ended construct applied to data management systems developed for environmental research programs, i.e., minimal planning effort and a flexible system that can accommodate changing research emphasis. We have found that by interfacing the DSS with the research data base management system, more appropriate statistical measures can be formulated to provide management support for evaluating program progress, status reports of current findings, and comparisons of findings with standards.

  13. Space Stirling Cryocooler Contamination Lessons Learned and Recommended Control Procedures (United States)

    Glaister, D. S.; Price, K.; Gully, W.; Castles, S.; Reilly, J.

    The most important characteristic of a space cryocooler is its reliability over a lifetime typically in excess of 7 years. While design improvements have reduced the probability of mechanical failure, the risk of internal contamination is still significant and has not been addressed in a consistent approach across the industry. A significant fraction of the endurance test and flight units have experienced some performance degradation related to internal contamination. The purpose of this paper is to describe and assess the contamination issues inside long life, space cryocoolers and to recommend procedures to minimize the probability of encountering contamination related failures and degradation. The paper covers the sources of contamination, the degradation and failure mechanisms, the theoretical and observed cryocooler sensitivity, and the recommended prevention procedures and their impact. We begin with a discussion of the contamination sources, both artificial and intrinsic. Next, the degradation and failure mechanisms are discussed in an attempt to arrive at a contaminant susceptibility, from which we can derive a contamination budget for the machine. This theoretical sensitivity is then compared with the observed sensitivity to illustrate the conservative nature of the assumed scenarios. A number of lessons learned on Raytheon, Ball, Air Force Research Laboratory, and NASA GSFC programs are shared to convey the practical aspects of the contamination problem. Then, the materials and processes required to meet the proposed budget are outlined. An attempt is made to present a survey of processes across industry.

  14. [Quality evaluation of the orthodontic practice for certification by ISO 9001. A procedure beneficial for medical, medico-dental or hospital service]. (United States)

    Becker, G


    The accreditation of the ISO 9001 certification (ISO = International Standard Organization) is an external evaluation procedure carried out by independent experts, whose object is the analysis of the operational methods and practices of a medical care facility (e.g. hospital, private clinic, general practitioner's or dentist's practice) which decided to assume the concept, implementation and control of its own quality policy. The whole accreditation procedure represents the basic structure of a continuous dynamic progressiveness within a cabinet eager to offer outstanding quality. Moreover, it guarantees active and voluntary participation of every single member of the medical administration or technical team involved in the realization of this primary objective. In other words, we are talking about a very strong dynamic innovation leading to a change of views and the improvement of communication means, while simultaneously enhancing the security and quality aspects of medical care. The continuous guarantee of high quality medical care calls for precise planning and systematization of actions. First of all, these actions are defined, analyzed and listed in precise work procedures. As they are defined with the agreement of the whole team, they implicate respect and self control. This requires of course transparency of the treatment methods, whose different steps and procedures are described in detail in a logogramm set up in common.

  15. Project B610 process control configuration acceptance test procedure

    Energy Technology Data Exchange (ETDEWEB)

    Silvan, G.R.


    The purpose of this test is to verify the Westinghouse configuration of the MICON A/S Distributed Control System for project B610. The following will be verified: proper assignment and operation of all field inputs to and outputs from the MICON Termination panels; proper operation of all display data on the operator`s console; proper operation of all required alarms; and proper operation of all required interlocks. The MICON A/S control system is configured to replace all the control, indication, and alarm panels now located in the Power Control Room. Nine systems are covered by this control configuration, 2736-ZB HVAC, 234-5Z HVAC, Process Vacuum, Dry Air, 291-Z Closed Loop Cooling, Building Accelerometer, Evacuation Siren, Stack CAMs, and Fire. The 2736-ZB HVAC system consists of the ventilation controls for 2736-ZB and 2736-Z as well as alarms for the emergency generators and 232-Z. The 234-5Z HVAC system is the ventilation controls for 235-5Z and 236-Z buildings. Process Vacuum covers the controls for the 26 inch vacuum system. Dry Air covers the controls for the steam and electric air dryers. The 291-Z Closed Loop Cooling system consists of the status indications and alarms for the 291-Z compressor and vacuum pump closed loop cooling system. The rest of closed loop cooling was tested earlier. The Building Accelerometer system consists of the status indications for the two seismic system accelerometers. The Evacuation Siren system includes the controls for the evacuation and take cover sirens. Stack CAMs cover the alarms for the various building ventilation stack continuous air monitors. Finally, the Fire system covers the various fire alarms now located in Room 321-A.

  16. 14 CFR 21.147 - Changes in quality control system. (United States)


    ... 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...

  17. Retrospective exposure assessment and quality control in an international multi-centre case-control study

    DEFF Research Database (Denmark)

    Tinnerberg, H; Heikkilä, P; Huici-Montagud, A;


    The paper presents the exposure assessment method and quality control procedure used in an international, multi-centre case-control study within a joint Nordic and Italian cohort. This study was conducted to evaluate whether occupational exposure to carcinogens influenced the predictivity of high...... frequency of chromosomal aberrations (CA) in peripheral lymphocytes for increased cancer risk. Occupational hygienists assessed exposures in each participating country: Denmark, Finland, Italy, Norway and Sweden. The exposure status to a carcinogen or a clastogen was coded in the cohort according...... country-specific differences, differences in information available to the home assessor and the others and misunderstandings or difficulties in translation of information. To ensure the consistency of exposure assessments in international retrospective case-control studies it is important to have a well...

  18. Application of reiteration of Hankel singular value decomposition in quality control (United States)

    Staniszewski, Michał; Skorupa, Agnieszka; Boguszewicz, Łukasz; Michalczuk, Agnieszka; Wereszczyński, Kamil; Wicher, Magdalena; Konopka, Marek; Sokół, Maria; Polański, Andrzej


    Medical centres are obliged to store past medical records, including the results of quality assurance (QA) tests of the medical equipment, which is especially useful in checking reproducibility of medical devices and procedures. Analysis of multivariate time series is an important part of quality control of NMR data. In this work we proposean anomaly detection tool based on Reiteration of Hankel Singular Value Decomposition method. The presented method was compared with external software and authors obtained comparable results.

  19. Quality Control for Scoring Tests Administered in Continuous Mode: An NCME Instructional Module (United States)

    Allalouf, Avi; Gutentag, Tony; Baumer, Michal


    Quality control (QC) in testing is paramount. QC procedures for tests can be divided into two types. The first type, one that has been well researched, is QC for tests administered to large population groups on few administration dates using a small set of test forms (e.g., large-scale assessment). The second type is QC for tests, usually…

  20. A Framework for a Quality Control System for Vendor/Processor Contracts. (United States)

    Advanced Technology, Inc., Reston, VA.

    A framework for monitoring quality control (QC) of processor contracts administered by the Department of Education's Office of Student Financial Assistance (OSFA) is presented and applied to the Pell Grant program. Guidelines for establishing QC measures and standards are included, and the uses of a sampling procedure in the QC system are…

  1. Bernoulli serial production lines with quality control devices: theory and application

    Directory of Open Access Journals (Sweden)


    Full Text Available This paper develops the procedure for the analysis of the production systems with quality control devices. The evaluation of the production system requires an expression for the system performance measures as functions of the machine and buffer parameters. This paper presents a method for evaluating these functions and illustrates their practical utility using a case study at a production plant.

  2. Automatic quality control in the production of ceramic substrates by pulsed laser cutting

    DEFF Research Database (Denmark)

    Morace, Renate Erica; Hansen, Hans Nørgaard; De Chiffre, Leonardo


    This paper deals with the use of optical coordinate measuring machines (CMMs) in the quality control of ceramic substrates produced by a CO2 pulsed laser. A procedure of automatic measurements on a CMM equipped with a CCD camera was developed. In particular, the number and the distribution...

  3. A Quality Control Design for Validating Hierarchical Sequencing of Programed Instruction. (United States)

    Tennyson, Robert D.; Boutwell, Richard C.

    A quality control model is proposed to facilitate development of effective instructional programs. The theories of R. M. Gagne and of M. D. Merrill provide the foundations for a theory of sequencing behavior into a hierarchical order in order to improve the learning potential of an instructional program. The initial step in the procedural model is…

  4. Body Disfigurement and the Quality of Life of Adolescents with Pectus Excavatum: Effects of the Nuss Procedure (United States)

    Roberts, Jillian; MacMath, Sheryl; English, Margot; Martin, Joan; Hayashi, Al; Sigalet, David L.


    This article takes a comprehensive look at the effects of pectus excavatum, a congenital deformity with psychosocial and physical ramifications, and the Nuss procedure on the quality of life of adolescents. The Nuss procedure is a minimally invasive corrective surgery. Twenty-five participants from Calgary, Alberta were interviewed (10 adolescents…

  5. TL dosimetry for quality control of CR mammography imaging systems (United States)

    Gaona, E.; Nieto, J. A.; Góngora, J. A. I. D.; Arreola, M.; Enríquez, J. G. F.

    The aim of this work is to estimate the average glandular dose with thermoluminescent (TL) dosimetry and comparison with quality imaging in computed radiography (CR) mammography. For a measuring dose, the Food and Drug Administration (FDA) and the American College of Radiology (ACR) use a phantom, so that dose and image quality are assessed with the same test object. The mammography is a radiological image to visualize early biological manifestations of breast cancer. Digital systems have two types of image-capturing devices, full field digital mammography (FFDM) and CR mammography. In Mexico, there are several CR mammography systems in clinical use, but only one system has been approved for use by the FDA. Mammography CR uses a photostimulable phosphor detector (PSP) system. Most CR plates are made of 85% BaFBr and 15% BaFI doped with europium (Eu) commonly called barium flourohalideE We carry out an exploratory survey of six CR mammography units from three different manufacturers and six dedicated X-ray mammography units with fully automatic exposure. The results show three CR mammography units (50%) have a dose greater than 3.0 mGy without demonstrating improved image quality. The differences between doses averages from TLD system and dosimeter with ionization chamber are less than 10%. TLD system is a good option for average glandular dose measurement for X-rays with a HVL (0.35-0.38 mmAl) and kVp (24-26) used in quality control procedures with ACR Mammography Accreditation Phantom.

  6. The quality control theory of aging

    Directory of Open Access Journals (Sweden)

    Warren Ladiges


    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.

  7. The quality control theory of aging. (United States)

    Ladiges, Warren


    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.

  8. Quality control chart for crushed granite concrete

    Directory of Open Access Journals (Sweden)

    Ewa E. DESMOND


    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.


    Directory of Open Access Journals (Sweden)

    Vanina eRomanello


    Full Text Available Loss of muscle mass and force occurs in many diseases such as disuse/inactivity, diabetes, cancer, renal and cardiac failure and in aging-sarcopenia. In these catabolic conditions the mitochondrial content, morphology and function are greatly affected. The changes of mitochondrial network influence the production of reactive oxygen species (ROS that play an important role in muscle function. Moreover, dysfunctional mitochondria trigger catabolic signaling pathways which feed-forward to the nucleus to promote the activation of muscle atrophy. Exercise, on the other hand, improves mitochondrial function by activating mitochondrial biogenesis and mitophagy, possibly playing an important part in the beneficial effects of physical activity in several diseases. Optimised mitochondrial function is strictly maintained by the coordinated activation of different mitochondrial quality control pathways. In this review we outline the current knowledge linking mitochondria-dependent signaling pathways to muscle homeostasis in aging and disease and the resulting implications for the development of novel therapeutic approaches to prevent muscle loss.

  10. Quality control for X-ray dosimetry with Fricke dosimeter

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Vivianne Lucia Bormann de [Centro Regional de Cincias Nucleares (CRCN-NE/CNEN-PE), Recife, PE (Brazil)]. E-mail:; Austerlitz, C. [East Carolina University, NC (United States)]. E-mail:


    It is a well-established fact that the success of radiation therapy is dependent on the accurate dosimetry of the radiation beam used. This dosimetry must include equipment performance as well. A system for Fricke dosimetry was used for this purpose. The Fricke solution and a parallel ionization chamber (used for comparison) were irradiated with an X-ray beam from a Pantak X-ray equipment. The ionization chamber was positioned at a distance of 500 mm of the focal point, in the central axis of the X-ray field which is defined as 100x100 mm{sup 2} at the calibration distance. A plexiglas phantom appropriate to hold the polypropylene tube was used to irradiate the vials with the Fricke solution. The irradiated solutions were transferred directly from the polypropylene vials to 10 mm length cuvettes and the optical densities were measured in 304 nm using a Beckman Counter Model DU 640 spectrophotometer. Three institutions were visited to verify their procedures and two were in accordance with the lAEA recommended procedures for soft X-ray dosimetry. The results of the measurements performed in the institutions visited show that the Fricke dosimeter system developed can be used for quality control for soft X-ray equipment. (author)

  11. A unified method of inspection and quality control

    Directory of Open Access Journals (Sweden)

    P.V. Krishna Iyer


    Full Text Available It has been shown earlier that the mean and range charts used for S.Q.C. can be replaced by a single chart showing the largest and smallest values of samples taken from the machine at regular intervals. This chart designated as L-S chart has been found to be economical and efficient in many respects. The present paper shows that by modifying the sampling procedure, the S.Q.C. chart, besides providing information on the machine setting, tool wearing etc. for controlling the quality of the products collected during sampling intervals and thus enables us to dispense with 100 percent stage inspection which is in practice in the ordnance factories. The modification consists in taking one or two jobs from the machine at regular intervals and another four jobs at random from the products manufactured during every interval. The samples so selected are plotted on a chart against the specification limits. The collections during the different intervals will be accepted if all the four jobs are within the specification limits; otherwise screening will be done. Condition of the machine is judged mainly from the jobs taken from it. The experimental investigations conducted at Gun and Shell Factory, Cossipore show that this procedure works as effectively as the L-S chart and cent per cent inspection

  12. Managing Quality in Higher Education Systems via Minimal Quality Requirements: Signaling and Control. (United States)

    Mizrahi, Shlomo; Mehrez, Abraham


    Discusses two versions of a signaling game to set minimal quality requirements for higher education applicants in Israel: one assumes low sensitivity to quality, the other high sensitivity. Concludes that indirect government influence on quality variations in applicant pool is more effective in controlling institutional quality then direct…

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

  14. Organ donation quality control in Abruzzo region (Italy). (United States)

    Parzanese, I; Maccarone, D; Caniglia, L; Pisani, F; Laurenzi, C; Famulari, A


    Abruzzo is a region in central Italy with a population of 1,262,392. Within this region there are 13 hospitals with intensive care units, four of which have neurosurgical units. The Regional Centre for Transplants in L'Aquila is notified of encephalic deaths in hospitals in Abruzzo and Molise and coordinates organ retrieval and transplantation. Organ donation is a process that involves a whole series of professionals who, operating in a sequential manner in each hospital, make possible the use of a cadaveric organ to give life to a person or improve the quality of life of a patient on a waiting list. Quality control procedures were introduced in 2001 and involve all of the hospitals in the region with intensive care units. The system for quality control was computerized in 2004 and is used in the four hospitals with neurosurgical units (type A hospitals) and in the 13 hospitals without (type B hospitals); the different types of deaths (cause of death, age, etc) are also analyzed with this system. One of the aims of this system is to discover the theoretical donation capacity, taking as benchmark values those resulting from the regional average and those published in international literature, and noting any shortcomings. It has emerged that donor identification is well organized and efficient and this is thanks to a concerted effort that has been made to overcome technical and organizational problems connected to donor detection and donor maintenance during the 6 hours of legal observation. The high percentage of opposition to organ removal, despite the fall registered in the first half of this year (2005), is still above the national average and still remains a critical point in the organ donation process.

  15. Optimal control of CPR procedure using hemodynamic circulation model (United States)

    Lenhart, Suzanne M.; Protopopescu, Vladimir A.; Jung, Eunok


    A method for determining a chest pressure profile for cardiopulmonary resuscitation (CPR) includes the steps of representing a hemodynamic circulation model based on a plurality of difference equations for a patient, applying an optimal control (OC) algorithm to the circulation model, and determining a chest pressure profile. The chest pressure profile defines a timing pattern of externally applied pressure to a chest of the patient to maximize blood flow through the patient. A CPR device includes a chest compressor, a controller communicably connected to the chest compressor, and a computer communicably connected to the controller. The computer determines the chest pressure profile by applying an OC algorithm to a hemodynamic circulation model based on the plurality of difference equations.

  16. Using a tandem ionization chamber for quality control of X-ray beams

    Energy Technology Data Exchange (ETDEWEB)

    Yoshizumi, Maira T.; Caldas, Linda V.E., E-mail: [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)


    X-ray beam qualities are defined by both the mean energies and by the half-value layers (HVL). Many international protocols use the half-value layer and the beam voltage to characterize the X-ray beam quality. A quality control program for X-ray equipment includes the constancy check of beam qualities, i.e., the periodical verification of the half-value layer, which can be a time consumable procedure. A tandem ionization chamber, developed at Instituto de Pesquisas Energeticas e Nucleares, was used to determine the HVL and its constancy for five radiotherapy standard beam qualities. This ionization chamber is composed by two sensitive volumes with inner electrodes made of different materials: aluminum and graphite. The beam quality constancy check test was performed during two months and the maximum variation obtained was 1.24% for the radiation beam quality T-10. This result is very satisfactory according to national recommendations. (author)

  17. Quality control and assurance in anesthesia: A necessity of the modern times. (United States)

    Bajwa, Sukhminder Jit Singh; Jindal, Ravi


    The advent of newer developments in anesthesia techniques and current clinical scenario has necessitated assurance of quality anesthesia services delivery. Numerous factors including availability of newer drugs, availability of newer advanced monitoring gadgets, increased awareness among the patient population, implementation of newer medico-legal laws and professional competitiveness has mandated a quality control and assurance in anesthesia. These domains of quality control are adapted from public health and are being incorporated into daily anesthesia practice in a gradual and phased manner. Quality control and assurance can be assessed and measured with certain quality indicators, which are also helpful in determining the perioperative outcome in anesthesia and surgical practice. Patient's perception about various anesthetic procedures, drug effects and recovery state are the prime underlying basis for assessing the quality assurance and control. At the same time, a positive impact of feedback mechanism cannot be under-emphasized while aiming for improvement in delivery of quality anesthesia services. The current review is aimed at highlighting the important aspects associated with quality assurance and quality control in anesthesia practice.

  18. Quality control and assurance in anesthesia: A necessity of the modern times (United States)

    Bajwa, Sukhminder Jit Singh; Jindal, Ravi


    The advent of newer developments in anesthesia techniques and current clinical scenario has necessitated assurance of quality anesthesia services delivery. Numerous factors including availability of newer drugs, availability of newer advanced monitoring gadgets, increased awareness among the patient population, implementation of newer medico-legal laws and professional competitiveness has mandated a quality control and assurance in anesthesia. These domains of quality control are adapted from public health and are being incorporated into daily anesthesia practice in a gradual and phased manner. Quality control and assurance can be assessed and measured with certain quality indicators, which are also helpful in determining the perioperative outcome in anesthesia and surgical practice. Patient's perception about various anesthetic procedures, drug effects and recovery state are the prime underlying basis for assessing the quality assurance and control. At the same time, a positive impact of feedback mechanism cannot be under-emphasized while aiming for improvement in delivery of quality anesthesia services. The current review is aimed at highlighting the important aspects associated with quality assurance and quality control in anesthesia practice. PMID:25886215

  19. A Study In Procedural Manipulation of Locus of Control (United States)


    JAM~ 73 UDTOO Wvs SSOEENCLASSIFIED JEU7 rFC T0W OF THIS PAGE (When DEntere szUX M *cf8 Or THIS PAOE(*tmn DAMa BRI-100d -4he experimental design was a...1979. Williams, J. G. and Stack, J. J. "Internal-External Control as a Situational Variable in Determining Information Seeking by Negro Students

  20. Predictive Models of Procedural Human Supervisory Control Behavior (United States)


    flight-path deconfliction and crew duties, remain a primary concern for safe operations ( Weibel and Hansman, 2005). In summary, the control of multiple...for the development of decision aids." Systems, Man and Cybernetics, IEEE Transactions on 20(2): 310-317. Weibel , R. E. and J. R. Hansman (2005

  1. Multivariate Bias Correction Procedures for Improving Water Quality Predictions using Mechanistic Models (United States)

    Libera, D.; Arumugam, S.


    Water quality observations are usually not available on a continuous basis because of the expensive cost and labor requirements so calibrating and validating a mechanistic model is often difficult. Further, any model predictions inherently have bias (i.e., under/over estimation) and require techniques that preserve the long-term mean monthly attributes. This study suggests and compares two multivariate bias-correction techniques to improve the performance of the SWAT model in predicting daily streamflow, TN Loads across the southeast based on split-sample validation. The first approach is a dimension reduction technique, canonical correlation analysis that regresses the observed multivariate attributes with the SWAT model simulated values. The second approach is from signal processing, importance weighting, that applies a weight based off the ratio of the observed and model densities to the model data to shift the mean, variance, and cross-correlation towards the observed values. These procedures were applied to 3 watersheds chosen from the Water Quality Network in the Southeast Region; specifically watersheds with sufficiently large drainage areas and number of observed data points. The performance of these two approaches are also compared with independent estimates from the USGS LOADEST model. Uncertainties in the bias-corrected estimates due to limited water quality observations are also discussed.

  2. Automated control procedures and first results from the temporary seismic monitoring of the 2012 Emilia sequence

    Directory of Open Access Journals (Sweden)

    Simone Marzorati


    Full Text Available After moderate to strong earthquakes in Italy or in the surrounding areas, the Istituto Nazionale di Geofisica e Vulcanologia (INGV; National Institute for Geophysics and Volcanology activates a temporary seismic network infrastructure. This is devoted to integration with the Italian National Seismic Network (RSN [Delladio 2011] in the epicentral area, thus improving the localization of the aftershocks distribution after a mainshock. This infrastructure is composed of a stand-alone, locally recording part (Re.Mo. [Moretti et al. 2010] and a real-time telemetered part (Re.Mo.Tel. [Abruzzese et al. 2011a, 2011b] that can stream data to the acquisition centers in Rome and Grottaminarda. After the May 20, 2012, Ml 5.9 earthquake in the Emilia region (northern Italy, the temporary network was deployed in the epicentral area; in particular, 10 telemetered and 12 stand-alone stations were installed [Moretti et al. 2012, this volume]. Using the dedicated connection between the acquisition center in Rome and the Ancona acquisition sub-center [Cattaneo et al. 2011], the signals of the real-time telemetered stations were acquired also in this sub-center. These were used for preliminary quality control, by adopting the standard procedures in use here (see next paragraph, and Monachesi et al. [2011]. The main purpose of the present study is a first report on this quality check, which should be taken into account for the correct use of these data. […

  3. Requirements for Control Room Computer-Based Procedures for use in Hybrid Control Rooms

    Energy Technology Data Exchange (ETDEWEB)

    Le Blanc, Katya Lee [Idaho National Lab. (INL), Idaho Falls, ID (United States); Oxstrand, Johanna Helene [Idaho National Lab. (INL), Idaho Falls, ID (United States); Joe, Jeffrey Clark [Idaho National Lab. (INL), Idaho Falls, ID (United States)


    Many plants in the U.S. are currently undergoing control room modernization. The main drivers for modernization are the aging and obsolescence of existing equipment, which typically results in a like-for-like replacement of analogue equipment with digital systems. However, the modernization efforts present an opportunity to employ advanced technology that would not only extend the life, but enhance the efficiency and cost competitiveness of nuclear power. Computer-based procedures (CBPs) are one example of near-term advanced technology that may provide enhanced efficiencies above and beyond like for like replacements of analog systems. Researchers in the LWRS program are investigating the benefits of advanced technologies such as CBPs, with the goal of assisting utilities in decision making during modernization projects. This report will describe the existing research on CBPs, discuss the unique issues related to using CBPs in hybrid control rooms (i.e., partially modernized analog control rooms), and define the requirements of CBPs for hybrid control rooms.

  4. A comparison of donor and control group quality of life. (United States)

    Tumin, Makmor; Abdul Talib Abdul Mutalib, Muzalwana; Mohd Satar, Nurulhuda; Abdullah, Nawi; Chong, Chin-Sieng; Ng, Kok-Peng; Lim, Soo-Kun


    Informed consent of prospective donors should include information about the quality of life (QoL) of existing donors, especially those within the relevant country. This study aimed to provide information on Malaysian organ donors' QoL relative to a control group. Using a shorter version of the SF-36, QoL of 80 donors from the University of Malaya Medical Center (UMMC), Malaysia was surveyed and compared to QoL of 80 selected healthy individuals. ANOVA and General Linear Model (GLM) procedure were each applied for the QoL comparison, which was based on gender and age. Donors recorded a better QoL relative to the control group. Comparison across gender revealed that differences are more obvious for males than females. Donor/control comparison across age groups reveals that donors aged 56 and above reported significantly better QoL in most domains relative to other age groups. Information on donor QoL should be made available to the public to present a comprehensive picture of the consequences of organ donation. Nonetheless, we also argue that, despite the merits of organ donation, caution is required before concluding that donors have better QoL because the present research outcomes may reflect a self-selection bias in which respondents only included donors engaging in regular follow-ups.

  5. Quality control with R an ISO standards approach

    CERN Document Server

    Cano, Emilio L; Prieto Corcoba, Mariano


    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.

  6. ProShell – The MedAustron Accelerator Control Procedure Framework

    CERN Document Server

    Moser, R; Marchhart, M; Torcato de Matos, C; Gutleber, J; Dedič, J; Sah, S


    MedAustron is a centre for ion-therapy and research in currently under construction in Austria. It features a synchrotron particle accelerator for proton and carbon-ion beams. This paper presents the architecture and concepts for implementing a procedure framework called ProShell. Procedures to automate high level control and analysis tasks for commissioning and during operation modelled with Petri-Nets and user code is implemented with C#. It must be possible to execute procedures and monitor their execution progress remotely. Procedures include starting up devices and subsystems in a controlled manner, configuring, operating O(1000) devices and tuning their operational settings using iterative optimization algorithms. Device interfaces must be extensible to accommodate yet unanticipated functionalities. The framework implements a template for procedure specific graphical interfaces to access device specific information such as monitoring data. Procedures interact with physical devices thro...

  7. Procedural Audio in Computer Games Using Motion Controllers: An Evaluation on the Effect and Perception

    Directory of Open Access Journals (Sweden)

    Niels Böttcher


    Full Text Available A study has been conducted into whether the use of procedural audio affects players in computer games using motion controllers. It was investigated whether or not (1 players perceive a difference between detailed and interactive procedural audio and prerecorded audio, (2 the use of procedural audio affects their motor-behavior, and (3 procedural audio affects their perception of control. Three experimental surveys were devised, two consisting of game sessions and the third consisting of watching videos of gameplay. A skiing game controlled by a Nintendo Wii balance board and a sword-fighting game controlled by a Wii remote were implemented with two versions of sound, one sample based and the other procedural based. The procedural models were designed using a perceptual approach and by alternative combinations of well-known synthesis techniques. The experimental results showed that, when being actively involved in playing or purely observing a video recording of a game, the majority of participants did not notice any difference in sound. Additionally, it was not possible to show that the use of procedural audio caused any consistent change in the motor behavior. In the skiing experiment, a portion of players perceived the control of the procedural version as being more sensitive.

  8. [The quality control of preanalytical variations for the determination of lead in samples of human origin]. (United States)

    Zhong, Kun; Wang, Wei; He, Falin; Wang, Zhiguo


    The aims of this article was to provide the quality control requirements of preanalytical variation for the determination of lead in samples of human origin, reduce the influence of preanalytical variation on the test results. According to the Clinical and Laboratory Standards Institute documents, control of preanalytical variation in trace element determinations, analytical procedures for the determination of lead in blood and urine and other references and guidelines, the methods of quality control of lead determination had been made, including: the factors needed to be considered before collection, preservation, transportation and other preanalytical factors, the abilities and considerations of laboratory staff, etc.

  9. Campaigns and Awareness Raising Strategies in Traffic Safety (CAST). Deliverable 0.3: Programme handbook for Quality Assurance QA procedures.

    NARCIS (Netherlands)

    Twisk, D.


    The Programme Handbook for Quality Assurance (QA) Procedures contains information about the quality assurance process and dissemination of study results. It includes the format to be used for various progress, effort and cost reports and it provides a list of duties for the steering committee and th

  10. Quality control of banked milk in Brasilia, Brazil. (United States)

    Almeida, Simone G; Dórea, José G


    The authors studied quality control procedures at human milk banks and nutritional profiles of 909 milk samples (from 195 donors, aged 15 to 45 years) from banked human milk (BHM) in Brasília, Brazil. Number of donations per donor ranged from 1 to > 10 that consisted mostly of mature milk (90.9%) with a mean total energy of 529 +/- 85 kcal/L and a mean total lipid of 22.7 g/L +/- 13.2. Microbiological quality (titrable acidity-Dornic, degrees D) was suitable for infant feeding in 99.2% of samples (< 8 degrees D), ranging from 2 degrees D to 8 degrees D (mean 4.8 +/- 1.4 degrees D). Most BHM (98.1%) samples were dispensed to inpatient infants (1-7 days) diagnosed with respiratory distress (30.1%), prematurity (20.7%), metabolic distress (16.0%), jaundice (14.4%), bacterial infection (6.0%), pneumonia (3.3%), congenital cardiac distress (2.2%), or other conditions (6.2%). Well-motivated mothers and trained staff are serving and sustaining an important life-saving network with long-lasting impact on public health.

  11. 42 CFR 84.256 - Quality control requirements. (United States)


    ... 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...

  12. K-type geomagnetic index nowcast with data quality control

    Directory of Open Access Journals (Sweden)

    René Warnant


    Full Text Available

    A nowcast system for operational estimation of a proxy K-type geomagnetic index is presented. The system is based on a fully automated computer procedure for real-time digital magnetogram data acquisition that includes screening of the dataset and removal of the outliers, estimation of the solar regular variation (SR of the geomagnetic field, calculation of the index, and issuing of an alert if storm-level activity is indicated. This is a time-controlled (rather than event-driven system that delivers the regular output of: the index value, the estimated quality flag, and eventually, an alert. The novel features provided are first, the strict control of the data input and processing, and second, the increased frequency of production of the index (every 1 h. Such quality control and increased time resolution have been found to be of crucial importance for various applications, e.g. ionospheric monitoring, that are of particular interest to us and to users of our service. The nowcast system operability, accuracy and precision have been tested with instantaneous measurements from recent years. A statistical comparison between the nowcast and the definitive index values shows that the average root-mean-square error is smaller than 1 KU. The system is now operational at the site of the Geophysical Centre of the Royal Meteorological Institute in Dourbes (50.1ºN, 4.6ºE, and it is being used for alerting users when geomagnetic storms take place.

  13. Performance evaluation by means of quality control of MRI system and comparison of institutions

    Energy Technology Data Exchange (ETDEWEB)

    Ogura, Akio [Kyoto City Hospital (Japan); Higashida, Mitsuji; Yamazaki, Masaru; Inoue, Hiroshi; Ishiguro, Akihiro


    To evaluate the performance of clinical magnetic resonance imaging systems, standard test procedures have been recommended by the NEMA, AAPM task group, EEC concerted research project, and others. The purpose of these standard tests is to determine system performance specifications, reference procedures for test acceptance, and periodic examination of quality control. However, the recommended measurements are very complicated when used for periodic quality control checks or comparisons with other systems. Therefore, we determined new standard test procedures that serve these purposes. Eleven clinical MRI systems in nine clinical facilities were evaluated using these new standard test sets. Results indicated that the measurement time was too short using the new test sets. However, through comparison with various MRI systems, the specificity of each system could be determined. (author)


    African Journals Online (AJOL)

    Ghana 's educational system yet the system of monitoring schools is governed by an “evolving” policy. ... that schools are well supervised and that the quality of what ... quality comes from having the best equipment, the best .... performance in the classroom and their career ... the number of teachers employed and the size of.

  15. Endoplasmic reticulum quality control and apoptosis. (United States)

    Groenendyk, Jody; Michalak, Marek


    The ER is one of the most important folding compartments within the cell, as well as an intracellular Ca(2+) storage organelle and it contains a number of Ca(2+) regulated molecular chaperones responsible for the proper folding of glycosylated as well as non-glycosylated proteins. The luminal environment of the ER contains Ca(2+) which is involved in regulating chaperones such as calnexin and calreticulin, as well as apoptotic proteins caspase-12 and Bap31, which may play an important role in determining cellular sensitivity to ER stress and apoptosis. The ER quality control system consists of several molecular chaperones, including calnexin, that assist in properly folding proteins and transporting them through the ER as well as sensing misfolded proteins, attempting to refold them and if this is not possible, targeting them for degradation. Accumulation of misfolded protein in the ER leads to activation of genes responsible for the expression of ER chaperones. The UPR mechanism involves transcriptional activation of chaperones by the membrane-localized transcription factor ATF6, in conjunction with the ER membrane kinase IRE1, as well as translational repression of protein synthesis by another ER membrane kinase PERK. When accumulation of misfolded protein becomes toxic, apoptosis is triggered, potentially with IRE1 involved in signaling via caspase-12. Both the extrinsic and intrinsic apoptotic pathways appear to culminate in the activation of caspases and this results in the recruitment of mitochondria in an essential amplifying manner. Bap31 may direct pro-apoptotic crosstalk between the ER and the mitochondria via Ca(2+) in conjunction with caspase-12 and calnexin. Accordingly, ER stress and the resultant Ca(2+) release must be very carefully regulated because of their effects in virtually all areas of cell function.

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

  17. Tank Monitoring and Control System (TMACS) Acceptance Test Procedure

    Energy Technology Data Exchange (ETDEWEB)

    BARNES, D.A.


    The purpose of this document is to describe tests performed to validate Revision 12.0 of the TMACS Monitor and Control System (TMACS) and verify that the software functions as intended by design. This document is intended to test the software portion of TMACS. The tests will be performed on the development system. The software to be tested is the TMACS knowledge bases (KB) and the I/O driver/services. The development system will not be communicating to field equipment; instead, the field equipment is simulated using emulators or multiplexers in the lab.

  18. Tank Monitoring and Control Sys (TMACS) Acceptance Test Procedure

    Energy Technology Data Exchange (ETDEWEB)



    The purpose of this document is to describe tests performed to validate Revision 11.2 of the TMACS Monitor and Control System (TMCACS) and verify that the software functions as intended by design. The tests will be performed on the development system. The software to be tested is the TMACS knowledge bases (KB) and the I/O driver/services. The development system will not be talking to field equipment; instead, the field equipment is simulated using emulators or multiplexers in the lab.

  19. Establishment of seed quality control programs Implantação de programas de controle de qualidade de sementes

    Directory of Open Access Journals (Sweden)

    S. M. Cicero


    Full Text Available An efficient quality control program should lead to the production of high quality seeds. Consequently, a series of technical and administrative procedures must be adopted in a way that does not compromise this objective. Considering that, in applied terms, external control becomes less important as internal control programs advance technologically, this work emphasizes the principle factors that should be considered in the implantation of a seed quality control program, such as: work groups, physical structure and procedures to initiate the program.Um programa de controle de qualidade deve proporcionar a produção de sementes de alta qualidade. Para que tal objetivo seja alcançado com sucesso, e necessário a adoção de uma serie de procedimentos técnicos e administrativos, sem os quais haverá comprometimento das metas a serem atingidas. Levando-se em conta que, em termos aplicados, o controle externo perde importância na medida que avançam tecnologicamente os programas de controle interno, o presente trabalho aborda os principais fatores que devem ser considerados na implantação de um programa de controle de qualidade de sementes, tais como: equipe de trabalho, estrutura física e procedimentos para iniciar o programa.


    Directory of Open Access Journals (Sweden)

    Stanka Preskar


    Full Text Available With Slovenia joining the EU the need for higher quality and faster transit transport of goods through customs procedures has increased. This paper presents the recent logistics approach, which allows a better link between transportation and freight forwarding. Modern computer programs used by forwarding companies have contributed to this. Forwarder companies may have a role of organizer or a place using the transport services of customs clearance of goods at the entry / exit to / from the European Union. Each type of transport has a role to play, but gets even stronger when combined under one category. This is a multimodal transport. As an example we use logistic work in a logistic company. Here the work is divided in to transit of goods, customs clearance of goods, but also touching the law and the ranking of goods by tariff codes.

  1. Preparation, control, and use of standard operating procedures in a space simulation laboratory (United States)

    Parish, R. P., Jr.


    The degree of success in the operation of a space simulation laboratory is a direct function of the role of its standard operating procedures. Their proper use in a thermal vacuum test effects a wellrun test program. Preparation and procedure control are discussed.

  2. Quality of polyimide foils for nuclear applications in relation to a new preparation procedure (United States)

    Sibbens, G.; Luyckx, K.; Stolarz, A.; JaskóŁa, M.; Korman, A.; Moens, A.; Eykens, R.; Sapundjiev, D.; Aregbe, Y.


    For more than 30 years thin polyimide foils have been produced at IRMM by in-situ polymerisation. The procedure consists of three steps, all performed under ambient atmosphere: preparation of a polycondensate solution used to form foil by spreading on a glass plate, removal of the solvent by thermal treatment for 4 h at 100 °C and final polymerisation at high temperature (350 °C). Recently modifications of this procedure including preparation in an argon atmosphere and elimination of the time-consuming solvent removal were applied. The influence of these modifications on the quality of the foils was studied by testing the mechanical and thermal properties and the lifetime of the foil under a charged projectile beam. The influence of the modifications on the characteristics and on the level of impurities in the foils is presented as well. Comparative studies of parameters were performed for foils with an areal density between 20 and 80 μg cm -2. This work showed that the foils prepared by the new fast preparation manner in a dry atmosphere have the best properties for nuclear physics applications.

  3. Calibration procedures for imaging spectrometers: improving data quality from satellite missions to UAV campaigns (United States)

    Brachmann, Johannes F. S.; Baumgartner, Andreas; Lenhard, Karim


    The Calibration Home Base (CHB) at the Remote Sensing Technology Institute of the German Aerospace Center (DLR-IMF) is an optical laboratory designed for the calibration of imaging spectrometers for the VNIR/SWIR wavelength range. Radiometric, spectral and geometric characterization is realized in the CHB in a precise and highly automated fashion. This allows performing a wide range of time consuming measurements in an efficient way. The implementation of ISO 9001 standards ensures a traceable quality of results. DLR-IMF will support the calibration and characterization campaign of the future German spaceborne hyperspectral imager EnMAP. In the context of this activity, a procedure for the correction of imaging artifacts, such as due to stray light, is currently being developed by DLR-IMF. Goal is the correction of in-band stray light as well as ghost images down to a level of a few digital numbers in the whole wavelength range 420-2450 nm. DLR-IMF owns a Norsk Elektro Optikks HySpex airborne imaging spectrometer system that has been thoroughly characterized. This system will be used to test stray light calibration procedures for EnMAP. Hyperspectral snapshot sensors offer the possibility to simultaneously acquire hyperspectral data in two dimensions. Recently, these rather new spectrometers have arisen much interest in the remote sensing community. Different designs are currently used for local area observation such as by use of small unmanned aerial vehicles (sUAV). In this context the CHB's measurement capabilities are currently extended such that a standard measurement procedure for these new sensors will be implemented.

  4. Procedures for monitoring recombinant erythropoietin and analogues in doping control. (United States)

    Segura, Jordi; Pascual, José A; Gutiérrez-Gallego, Ricardo


    The present report summarizes the main analytical strategies developed to identify the presence of recombinant erythropoietin (EPO) administered as a doping agent. Indirect evidence is based on the analysis of blood parameters (haemoglobin, haematocrit, reticulocytes, macrocytes, etc.) and serum markers (concentration of EPO and serum transferrin receptors, etc.). The problem of intertechnique comparison for reliable results evaluation is emphasized, especially for serum markers. Charge differences between isoforms of recombinant EPO and native urinary EPO are the grounds for the isoelectric focusing-double blotting-chemiluminescence detection method presently approved for doping control. Works addressing its advantages and limitations are presented and commented on. The chemical bases of the differential detection are highlighted and some future approaches for detection are also presented. The appearance and detectability of EPO analogues and mimetics susceptible for abuse are also addressed.

  5. Achieving minimum caseload requirements: an analysis of hospital quality control reports from 2004-2010. (United States)

    de Cruppé, Werner; Malik, Marc; Geraedts, Max


    Legally mandated minimum hospital caseload requirements for certain invasive procedures, including pancreatectomy, esophagectomy, and some types of organ transplantation, have been in effect in Germany since 2004. The goal of such requirements is to improve patient care by ensuring that patients undergo certain procedures only in hospitals that have met the corresponding minimum caseload requirement. We used the case numbers published in legally mandated hospital quality control reports to determine whether the hospitals actually met the stipulated requirements. We performed a secondary analysis of data supplied by hospitals in their quality control reports for the years 2004, 2006, 2008, and 2010 with respect to six procedures that have a minimum caseload requirement: complex interventions on the esophagus and pancreas, total knee replacement, and hepatic, renal, and stem-cell transplantation. The total case numbers for these six different procedures rose from 22 064 (0.1% of all procedures) in 2004 to 170 801 (0.9% of all procedures) in 2010. From 2006 onward, procedures to which minimum caseload requirements apply have been carried out in half of all hospitals studied. These procedures account for 0.9% of all inpatient cases in Germany. The percentage of hospitals that continue to perform certain procedures despite not having met the minimum caseload requirement ranged from 5% to 45%, depending on the type of procedure, and the percentage of cases carried out in such hospitals ranged from 1% to 15%. These values remained nearly constant for each of the six minimum caseload requirements over the 4 reporting years for which data were examined. The establishment of minimum caseload requirements in Germany in 2004 did not lessen the number of cases performed in violation of these requirements over the period 2004 to 2010.

  6. Employee quality, monitoring environment and internal control

    National Research Council Canada - National Science Library

    Chunli Liu Bin Lin Wei Shu


    ... 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...

  7. Quality-control: from record keeping to key performance indicators: manging quality in compounding pharmacies. (United States)

    Braga, Glaucia Karime; Fonseca, Maria Jose Viera


    Record keeping is fundamental in any quality-management system. Compounding pharmacies use a quality-management system that is based on the Good Compounding Practices, which emphasizes the necessity and therefore the importance of maintaining records. However, the activity of recording without conducting further data analysis does not assure continuous improvement of the preparations, services, and of the system itself. The purpose of this article is to suggest some nonfinancial key performance indicators that can be easily implemented by compounding pharmacies to assist in the development of an organizational procedure for measuring the quality of products and services. This is a new paradigm for managing quality in compounding pharmacies.

  8. 21 CFR 1307.21 - Procedure for disposing of controlled substances. (United States)


    ... substances which he/she desires to dispose of on DEA Form 41, and submit three copies of that form to the... controlled substances through procedures provided in laws and regulations adopted by any State. ...

  9. Performance suppression from control procedures is not the basis of the Mozart effect. (United States)

    Rideout, B E


    The suggestion by others that previous replications of the Mozart effect in this laboratory are due to suppression of arousal from a relaxation control procedure is inconsistent with our published data.

  10. Acceptance Test Procedure for New Pumping and Instrumentation Control Skid sup L sup

    CERN Document Server

    Koch, M R


    This Acceptance Test Procedure (ATP) provides for the inspection and testing of the new Pumping and Instrumentation Control (PIC) skid designed as ''L''. The ATP will be performed after the construction of the PIC skid in the shop.

  11. Intelligent, Semi-Automated Procedure Aid (ISAPA) for ISS Flight Control Project (United States)

    National Aeronautics and Space Administration — We propose to develop the Intelligent, Semi-Automated Procedure Aid (ISAPA) intended for use by International Space Station (ISS) ground controllers to increase the...

  12. Automated Quality Control for Ortholmages and DEMs

    DEFF Research Database (Denmark)

    Höhle, Joachim; Potucková, Marketa


    The checking of geometric accurancy of orthoimages and digital elevation models (DEMs) is discussed. As a reference, an existing orthoimage and a second orthoimage derived from an overlapping aerial image, are used. The proposed automated procedures for checking the orthoimages and DEMs are based...

  13. 10 CFR 26.167 - Quality assurance and quality control. (United States)


    ... acceptable values are obtained for the known calibrators, those values will be used to calculate sample data... performing specific gravity tests: (i) The refractometer must report and display the specific gravity to four... initial and confirmatory specific gravity tests must have a calibrator or control at 1.0000; and (iii) The...

  14. Managing Air Quality - Multi-Pollutant Planning and Control (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.

  15. Quality assurance and quality control of geochemical data—A primer for the research scientist (United States)

    Geboy, Nicholas J.; Engle, Mark A.


    Geochemistry is a constantly expanding science. More and more, scientists are employing geochemical tools to help answer questions about the Earth and earth system processes. Scientists may assume that the responsibility of examining and assessing the quality of the geochemical data they generate is not theirs but rather that of the analytical laboratories to which their samples have been submitted. This assumption may be partially based on knowledge about internal and external quality assurance and quality control (QA/QC) programs in which analytical laboratories typically participate. Or there may be a perceived lack of time or resources to adequately examine data quality. Regardless of the reason, the lack of QA/QC protocols can lead to the generation and publication of erroneous data. Because the interpretations drawn from the data are primary products to U.S. Geological Survey (USGS) stakeholders, the consequences of publishing erroneous results can be significant. The principal investigator of a scientific study ultimately is responsible for the quality and interpretation of the project's findings, and thus must also play a role in the understanding, implementation, and presentation of QA/QC information about the data. Although occasionally ignored, QA/QC protocols apply not only to procedures in the laboratory but also in the initial planning of a research study and throughout the life of the project. Many of the tenets of developing a sound QA/QC program or protocols also parallel the core concepts of developing a good study: What is the main objective of the study? Will the methods selected provide data of enough resolution to answer the hypothesis? How should samples be collected? Are there known or unknown artifacts or contamination sources in the sampling and analysis methods? Assessing data quality requires communication between the scientists responsible for designing the study and those collecting samples, analyzing samples, treating data, and

  16. Evaluation of the indoor air quality minimum ventilation rate procedure for use in California retail buildings. (United States)

    Dutton, S M; Mendell, M J; Chan, W R; Barrios, M; Sidheswaran, M A; Sullivan, D P; Eliseeva, E A; Fisk, W J


    This research assesses benefits of adding to California Title-24 ventilation rate (VR) standards a performance-based option, similar to the American Society of Heating, Refrigerating, and Air Conditioning Engineers 'Indoor Air Quality Procedure' (IAQP) for retail spaces. Ventilation rates and concentrations of contaminants of concern (CoC) were measured in 13 stores. Mass balance models were used to estimate 'IAQP-based' VRs that would maintain concentrations of all CoCs below health- or odor-based reference concentration limits. An intervention study in a 'big box' store assessed how the current VR, the Title 24-prescribed VR, and the IAQP-based VR (0.24, 0.69, and 1.51 air changes per hour) influenced measured IAQ and perceived of IAQ. Neither current VRs nor Title 24-prescribed VRs would maintain all CoCs below reference limits in 12 of 13 stores. In the big box store, the IAQP-based VR kept all CoCs below limits. More than 80% of subjects reported acceptable air quality at all three VRs. In 11 of 13 buildings, saving energy through lower VRs while maintaining acceptable IAQ would require source reduction or gas-phase air cleaning for CoCs. In only one of the 13 retail stores surveyed, application of the IAQP would have allowed reduced VRs without additional contaminant-reduction strategies. Published 2014. This article is a U.S. Government work and is in the public domain in the USA.

  17. Teaching Quality Control with Chocolate Chip Cookies (United States)

    Baker, Ardith


    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…

  18. Teaching Quality Control with Chocolate Chip Cookies (United States)

    Baker, Ardith


    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…

  19. ISO 9002 as Literacy Practice: Coping with Quality-Control Documents in a High-Tech Company (United States)

    Kleifgen, Jo Anne


    This study describes the process by which a circuit board manufacturing company became certified in an international quality control program known as ISO 9002. Particular attention is paid to how quality documents were made and used in actual practice and to the relationship between these standardized procedures (official literacies) and…

  20. The Effectiveness of Healthy Lifestyle Promotion Intervention on Quality of Life in Patients with Congestive Heart Failure via Cognitive-Behavioral Procedure

    Directory of Open Access Journals (Sweden)

    M Zeraatkar


    Full Text Available Introduction: Reduced quality of life in cardiac patients and their frequent hospitalizations in the coronary care units is regarded as a main challenge for such patients. Therefore, this study aimed to explore the effectiveness of healthy lifestyle promotion intervention on quality of life in patients with congestive heart failure via cognitive-behavioral procedure. Methods: In this randomized controlled trial, assessment in pretest, posttest, and follow-up along with the control group were applied. Twenty-six patients with congestive heart failure were selected via convenience sampling among patients attended to Shahid Rajaee Heart hospital in Tehran. Then, they were randomly assigned to the experimental group (n=11; under administration of healthy lifestyle promotion intervention via cognitive-behavioral procedure during eight group sessions once a week and control group (n=15. Quality of life was measured for all the participants in three phases of pre-test, post-test and follow-up by Questionnaire of Quality of Life in Patients with Heart Failure (IHF-QoL and Depression Anxiety Stress Scales (DASS. Results: According to the results of variance analysis with repeated measures, this intervention was proved to have short-time effects on quality of life and its psychological components (P<0.001. Following the therapy termination, patients were returned to baseline, though the effect of intervention on depression was continued within 2 month follow-up (P<0.001. Conclusion: In regard with the effectiveness of healthy lifestyle promotion intervention via cognitive-behavioral procedure in improving quality of life and its psychological aspects, as well as high costs of hospital and prolonged treatment for these patients, applying this intervention in a permanent manner seem to be beneficial.

  1. A multi-harmonic amplitude and relative-phase controller for active sound quality control (United States)

    Mosquera-Sánchez, Jaime A.; de Oliveira, Leopoldo P. R.


    Current active sound quality control systems aim at dealing with the amplitude level of the primary disturbance, e.g. sound pressure, forces, velocities and/or accelerations, which implicitly leads to Loudness control, regardless of the spectral structure of the disturbance. As far as multi-harmonic disturbances are concerned, auditory Roughness, arguably the most related psychoacoustic metric with rumbling perception in passenger cars, can be tackled not merely by dealing with magnitudes but also with the relative-phase of the narrowband components. This paper presents an adaptive control scheme conceived for dealing with multi-harmonic disturbances, which features the independent amplitude and/or relative-phase control of the input periodic components and an improved robustness to impulsive events. The adaptive control scheme is based on a frequency-domain delayless implementation of the complex-domain, least mean squares algorithm, whereof its convergence process is improved by using a forgetting factor. The control capabilities are evaluated numerically for single- and multiple-harmonic disturbances, including realistic internal combustion engine sound contaminated with noise and by impulsive events. By using long transfer paths obtained from a real vehicle mock-up, sound pressure level reductions of 39 dBSPL and the ability to displacing the relative-phase of a number of narrowband components between [-π,π] are accomplished by the proposed control scheme. The assessment of the results by using Zwicker-Loudness and auditory Roughness models shows that the proposed adaptive algorithm is able to accomplish and stably preserve various sound quality targets, after completion of the robust convergence procedure, regardless of impulsive events that can occur during the system operation.

  2. Quality of life among women treated for breast cancer: a survey of three procedures in Mexico. (United States)

    Cortés-Flores, Ana Olivia; Morgan-Villela, Gilberto; Zuloaga-Fernández del Valle, Carlos José; Jiménez-Tornero, Jorge; Juárez-Uzeta, Ernesto; Urias-Valdez, Diana Paola; Garcia-González, Luis-Alberto; Fuentes-Orozco, Clotilde; Chávez-Tostado, Mariana; Macías-Amezcua, Michel Dassaejv; Garcia-Renteria, Jesus; González-Ojeda, Alejandro


    This study aimed to determine the quality of life among patients treated with one of three different types of surgery for breast cancer. This cross-sectional study used a questionnaire survey completed by Mexican patients without active disease 1 year after breast cancer surgery. The 139 patients enrolled in the study included 44 (31.6 %) who had undergone mastectomy with reconstruction, 41 (29.5 %) who had undergone a quadrantectomy, and 54 (38.9 %) who had undergone radical mastectomy without reconstruction. The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire, core version 30 (EORTC QLQ-C30) and EORTC Breast Quality-of-Life Questionnaire (QLQ-BR23) questionnaires were used. These instruments had a reliability greater than 0.82. Global health status (94.30 ± 12.04; p = 0.028) and role functioning (85.16 ± 17.23; p = 0.138) were highest in the quadrantectomy group. The pain score was highest in the group that had received mastectomy with reconstruction (26.13 ± 30.15; p = 0.042). The breast symptom score (22.56 ± 22.30; p = 0.009) and body image perception (85.56 ± 19.72; p = 0.025) were highest in the group that had conservative treatment. The overall health of the patients who had undergone mastectomy without reconstruction was lower (72.61 ± 20.89; p = 0.014) among the women older than 50 years than among the younger women. The quadrantectomy procedure had better acceptance, but the overall health status did not differ between the groups. The overall health status was lower among the women older than 50 years who had received a mastectomy without reconstruction.

  3. [On-site quality control of acupuncture randomized controlled trial: design of content and checklist of quality control based on PICOST]. (United States)

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


    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.

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

    DEFF Research Database (Denmark)

    Pigolotti, Simone; Lizana, Ludvig; Otzen, Daniel


    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 t...

  5. 75 FR 41874 - Quality Control for Rental Assistance Subsidy Determinations (United States)


    ... URBAN DEVELOPMENT Quality Control for Rental Assistance Subsidy Determinations AGENCY: Office of the.... This notice also lists the following information: Title of Proposal: Quality Control for Rental... agency's estimate of the burden of the proposed collection of information; (3) Enhance the...

  6. Artificial Intelligence Approach to Support Statistical Quality Control Teaching (United States)

    Reis, Marcelo Menezes; Paladini, Edson Pacheco; Khator, Suresh; Sommer, Willy Arno


    Statistical quality control--SQC (consisting of Statistical Process Control, Process Capability Studies, Acceptance Sampling and Design of Experiments) is a very important tool to obtain, maintain and improve the Quality level of goods and services produced by an organization. Despite its importance, and the fact that it is taught in technical and…

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

    NARCIS (Netherlands)

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


    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 w

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

    NARCIS (Netherlands)

    Maanen, van Peter-Paul; Busschers, Freek S.; Brouwer, Anne-Marie; Meulendijk, van der Michiel J.; Erp, van Jan B.F.


    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 geologi

  9. Stability assessment of QKD procedures in commercial quantum cryptography systems versus quality of dark channel (United States)

    Jacak, Monika; Melniczuk, Damian; Jacak, Janusz; Jóźwiak, Ireneusz; Gruber, Jacek; Jóźwiak, Piotr


    In order to assess the susceptibility of the quantum key distribution (QKD) systems to the hacking attack including simultaneous and frequent system self-decalibrations, we analyze the stability of the QKD transmission organized in two commercially available systems. The first one employs non-entangled photons as flying qubits in the dark quantum channel for communication whereas the second one utilizes the entangled photon pairs to secretly share the cryptographic key. Applying standard methods of the statistical data analysis to the characteristic indicators of the quality of the QKD communication (the raw key exchange rate [RKER] and the quantum bit error rate [QBER]), we have estimated the pace of the self-decalibration of both systems and the repeatability rate in the case of controlled worsening of the dark channel quality.

  10. Contributions of CCLM to advances in quality control. (United States)

    Kazmierczak, Steven C


    Abstract The discipline of laboratory medicine is relatively young when considered in the context of the history of medicine itself. The history of quality control, within the context of laboratory medicine, also enjoys a relatively brief, but rich history. Laboratory quality control continues to evolve along with advances in automation, measurement techniques and information technology. Clinical Chemistry and Laboratory Medicine (CCLM) has played a key role in helping disseminate information about the proper use and utility of quality control. Publication of important advances in quality control techniques and dissemination of guidelines concerned with laboratory quality control has undoubtedly helped readers of this journal keep up to date on the most recent developments in this field.

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

    NARCIS (Netherlands)

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


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

    NARCIS (Netherlands)

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


    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

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

    DEFF Research Database (Denmark)

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


    When improving software packages such as MOUSE and SAMBA for designing sewers and storage basins, and simulating overflows and flooding the quality of the input becomes important. The essential input to these modelling tools are the historical rain series. This paper presents the procedures for c...

  14. A uniform, quality controlled Surface Ocean CO2 Atlas (SOCAT)

    Digital Repository Service at National Institute of Oceanography (India)

    Pfeil, B.; Olsen, A.; Bakker, D.C.E.; Hankin, S.; Koyuk, H.; Kozyr, A.; Malczyk, J.; Manke, A.; Metzl, N.; Sabine, C.L.; Akl, J.; Alin, S.R.; Bates, N.; Bellerby, R.G.J.; Borges, A.; Boutin, J.; Brown, P.J.; Cai, W.-J.; Chavez, F.P.; Chen, A.; Cosca, C.; Fassbender, A.J.; Feely, R.A.; Gonzalez-Davila, M.; Goyet, C.; Hales, B.; Hardman-Mountford, N.; Heinze, C.; Hood, M.; Hoppema, M.; Hunt, C.W.; Hydes, D.; Ishii, M.; Johannessen, T.; Jones, S.D.; Key, R.M.; Kortzinger, A.; Landschutzer, P.; Lauvset, S.K.; Lefevre, N.; Lenton, A.; Lourantou, A.; Merlivat, L.; Midorikawa, T.; Mintrop, L.; Miyazaki, C.; Murata, A.; Nakadate, A.; Nakano, Y.; Nakaoka, S.; Nojiri, Y.; Omar, A.M.; Padin, X.A.; Park, G.-H.; Paterson, K.; Perez, F.F.; Pierrot, D.; Poisson, A.; Rios, A.F.; Santana-Casiano, J.M.; Salisbury, J.; Sarma, V.V.S.S.; et al

    in the calculations (as opposed to equilibrator pres- sure), 3 hPa were added to account for the slight overpressure normally maintained in ships (Takahashi et al., 2009b). Sur- face water CO2 data without accompanying SST were sus- pended from SOCAT, as f CO2... not been used for buoys, since no NODC vessel code is available for these. 4 SOCAT secondary quality control An important aim of SOCAT was to establish and imple- ment community agreed secondary quality control (QC) pro- cedures for f CO2 data. Procedures...

  15. First steps in quality control equipment MRI; Primeros pasos en el control de calidad de equipos de imagen por resonancia magnetica

    Energy Technology Data Exchange (ETDEWEB)

    Alonso Diaz, M.; Castaneda Arronte, M. J.; Ferreiros Vazquez, N.; Sanchez Merino, G.


    The present work aims to develop the initial stages of a program of quality control of nuclear magnetic resonance equipment. Not intended to conduct a comprehensive study covering all aspects of quality control, but gather the steps are followed and the most common problems they are encountering during the development of this program. It has been claimed that the work will be helpful to others facing the same task. Have been studied the compatibility of mannequins and procedures for the various teams. Ideally, such controls should be independent of the procedures and mannequins own commercial houses.

  16. Syringe and Needle Size, Syringe Type, Vacuum Generation, and Needle Control in Aspiration Procedures (United States)

    Haseler, Luke J.; Sibbitt, Randy R.; Sibbitt, Wilmer L.; Michael, Adrian A.; Gasparovic, Charles M.; Bankhurst, Arthur D.


    Purpose Syringes are used for diagnostic fluid aspiration and fine needle aspiration biopsy (FNA) in interventional procedures. We determined the benefits, disadvantages, and patient safety implications of syringe and needle size on vacuum generation, hand force requirements, biopsy/fluid yield, and needle control during aspiration procedures. Materials and Methods Different sizes (1, 3, 5, 10, and 20 ml) of the conventional syringe and aspirating mechanical safety syringe, the reciprocating procedure device (RPD), were studied. 20 operators performed aspiration procedures with the following outcomes measured: 1) vacuum (Torr), 2) time to vacuum (seconds), 3) hand force to generate vacuum (Torr-cm2), 4) operator difficulty during aspiration, 5) biopsy yield (mg), and 6) operator control of the needle tip position (mm). Results Vacuum increased tissue biopsy yield at all needle diameters (p aspirate, and resulted in significant loss of needle control (pneedle control (pneedle and maximize fluid and tissue yield during aspiration procedures, a two-handed technique and the smallest syringe size adequate for the procedure should be used. If precise needle control or one-handed operation is required, a mechanical safety syringe should be considered. PMID:21057795

  17. Greenhouse climate control affects postharvest tomato quality

    NARCIS (Netherlands)

    Farneti, B.; Schouten, R.E.; Qian, T.; Dieleman, J.A.; Tijskens, L.M.M.; Woltering, E.J.


    In this study, important quality properties such as firmness, sugar and acid levels were measured and analysed in tomatoes harvested from three greenhouses during a five month period and stored at 16 degrees C for over 20 days. Tomatoes were harvested from three identical, neighbouring, greenhouses

  18. On the actual state of industrial quality assurance procedures with regard to (106)Ru ophthalmic plaques. (United States)

    Kaulich, Theodor W; Zurheide, Jens; Haug, Thomas; Budach, Wilfried; Nüsslin, Fridtjof; Bamberg, Michael


    In radiotherapy of intraocular tumors, e. g., in the case of malign choroid melanomas, episcleral brachytherapy with (106)Ru ophthalmic plaques has proven to be successful. In a study, the authors reported on the discovery of the following shortcomings in industrial quality assurance, which are relevant to therapy, during the course of an internal clinical acceptance test of (106)Ru ophthalmic plaques, manufactured by the company Bebig from Berlin, Germany. This consisted of inconsistent dose rate specifications in the manufacturer's certificate, covering a range of 111% and with the risk of leakage of the plaques. Bebig was called upon to adapt state-of-the-art production methods with regard to (106)Ru ophthalmic plaques. In the meantime, Bebig has modernized production of (106)Ru ophthalmic plaques and adopted all the quality assurance procedures proposed by the authors. Moreover, the requested traceability of the calibration of activity and dose rate of the (106)Ru ophthalmic plaques to standards of the federal authorities in charge of measurement procedures has been implemented. In the year 2002, Bebig updated, among other things, the ASMW (GDR) calibration of the dose rate of the (106)Ru ophthalmic plaques from the years 1987-1989 by a calibration of the NIST (USA). The current NIST calibration, together with the new equipment for the measurement of the depth dose curves, led to the consequence that the new NIST 2001 dose rate values show, in the mean, a deviation of 0.75 times (plaque type CCC) up to 2.06 times (plaque types CCX, CCY, and CCZ) compared to the dose rate values that had been indicated so far in Bebig's certificate, based on the ASMW 1987 calibration. For the 95% confidence interval, Bebig estimated the measurement uncertainty to be +/- 25%. If one takes into consideration the minimal and maximal values in such 95% confidence intervals, it follows that the new NIST 2001 dose rate values deviate between 0.56 times (plaque type CCC) and 2.58 times

  19. Post-Mission Quality Assurance Procedure for Survey-Grade Mobile Mapping Systems (United States)

    Kerstinga, A. P.; Friess, P.


    Mobile Mapping Systems (MMS) consist of terrestrial-based moving platforms that integrate a set of imaging sensors (typically digital cameras and laser scanners) and a Position and Orientation System (POS), designed to collect data of the surrounding environment. MMS can be classified as "mapping-grade" or "survey-grade" depending on the system's attainable accuracy. Mapping-grade MMS produce geospatial data suitable for GIS applications (e.g., asset management) while survey-grade systems should satisfy high-accuracy applications such as engineering/design projects. The delivered accuracy of an MMS is dependent on several factors such as the accuracy of the system measurements and calibration parameters. It is critical, especially for survey-grade systems, to implement a robust Quality Assurance (QA) procedure to ensure the achievement of the expected accuracy. In this paper, a new post-mission QA procedure is presented. The presented method consists of a fully-automated self-calibration process that allows for the estimation of corrections to the system calibration parameters (e.g., boresight angles and lever-arm offsets relating the lidar sensor(s) to the IMU body frame) as well as corrections to the system measurements (e.g., post-processed trajectory position and orientation, scan angles and ranges). As for the system measurements, the major challenge for MMS is related to the trajectory determination in the presence of multipath signals and GNSS outages caused by buildings, underpasses and high vegetation. In the proposed self-calibration method, trajectory position errors are properly modelled while utilizing an efficient/meaningful trajectory segmentation technique. The validity of the proposed method is demonstrated using a dataset collected under unfavorable GNSS conditions.

  20. A New Quality Control Method base on IRMCD for Wind Profiler Observation towards Future Assimilation Application (United States)

    Chen, Min; Zhang, Yu


    A wind profiler network with a total of 65 profiling radars was operated by the MOC/CMA in China until July 2015. In this study, a quality control procedure is constructed to incorporate the profiler data from the wind-profiling network into the local data assimilation and forecasting system (BJRUC). The procedure applies a blacklisting check that removes stations with gross errors and an outlier check that rejects data with large deviations from the background. Instead of the bi-weighting method, which has been commonly implemented in outlier elimination for one-dimensional scalar observations, an outlier elimination method is developed based on the iterated reweighted minimum covariance determinant (IRMCD) for multi-variate observations such as wind profiler data. A quality control experiment is separately performed for subsets containing profiler data tagged in parallel with/without rain flags at every 00UTC/12UTC from 20 June to 30 Sep 2015. From the results, we find that with the quality control, the frequency distributions of the differences between the observations and model background become more Gaussian-like and meet the requirements of a Gaussian distribution for data assimilation. Further intensive assessment for each quality control step reveals that the stations rejected by blacklisting contain poor data quality, and the IRMCD rejects outliers in a robust and physically reasonable manner.

  1. Quality controls for wind measurement of a 1290-MHz boundary layer profiler under strong wind conditions (United States)

    Liu, Zhao; Zheng, Chaorong; Wu, Yue


    Wind profilers have been widely adopted to observe the wind field information in the atmosphere for different purposes. But accuracy of its observation has limitations due to various noises or disturbances and hence need to be further improved. In this paper, the data measured under strong wind conditions, using a 1290-MHz boundary layer profiler (BLP), are quality controlled via a composite quality control (QC) procedure proposed by the authors. Then, through the comparison with the data measured by radiosonde flights (balloon observations), the critical thresholds in the composite QC procedure, including consensus average threshold T1 and vertical shear threshold T3, are systematically discussed. And the performance of the BLP operated under precipitation is also evaluated. It is found that to ensure the high accuracy and high data collectable rate, the optimal range of subsets is determined to be 4 m/s. Although the number of data rejected by the combined algorithm of vertical shear examination and small median test is quite limited, it is proved that the algorithm is quite useful to recognize the outlier with a large discrepancy. And the optimal wind shear threshold T3 can be recommended as 5 ms-1/100 m . During patchy precipitation, the quality of data measured by the four oblique beams (using the DBS measuring technique) can still be ensured. After the BLP data are quality controlled by the composite QC procedure, the output can show good agreement with the balloon observation.

  2. Procedures for adjusting regional regression models of urban-runoff quality using local data (United States)

    Hoos, A.B.; Sisolak, J.K.


    Statistical operations termed model-adjustment procedures (MAP?s) can be used to incorporate local data into existing regression models to improve the prediction of urban-runoff quality. Each MAP is a form of regression analysis in which the local data base is used as a calibration data set. Regression coefficients are determined from the local data base, and the resulting `adjusted? regression models can then be used to predict storm-runoff quality at unmonitored sites. The response variable in the regression analyses is the observed load or mean concentration of a constituent in storm runoff for a single storm. The set of explanatory variables used in the regression analyses is different for each MAP, but always includes the predicted value of load or mean concentration from a regional regression model. The four MAP?s examined in this study were: single-factor regression against the regional model prediction, P, (termed MAP-lF-P), regression against P,, (termed MAP-R-P), regression against P, and additional local variables (termed MAP-R-P+nV), and a weighted combination of P, and a local-regression prediction (termed MAP-W). The procedures were tested by means of split-sample analysis, using data from three cities included in the Nationwide Urban Runoff Program: Denver, Colorado; Bellevue, Washington; and Knoxville, Tennessee. The MAP that provided the greatest predictive accuracy for the verification data set differed among the three test data bases and among model types (MAP-W for Denver and Knoxville, MAP-lF-P and MAP-R-P for Bellevue load models, and MAP-R-P+nV for Bellevue concentration models) and, in many cases, was not clearly indicated by the values of standard error of estimate for the calibration data set. A scheme to guide MAP selection, based on exploratory data analysis of the calibration data set, is presented and tested. The MAP?s were tested for sensitivity to the size of a calibration data set. As expected, predictive accuracy of all MAP?s for

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

    Energy Technology Data Exchange (ETDEWEB)

    Fishler, B


    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. New regulatory framework for wastewater quality control in Mexico. (United States)

    Saade Hazin, L


    This paper analyses the new regulatory framework for wastewater quality control developed in Mexico. It provides a description of the Mexican government strategies for water pollution control. The discussion focuses on the policy instruments used, their evolution and the main difficulties encountered in their implementation. The new regulatory framework is discussed highlighting some of the economic implications of the reforms. The paper concludes that proper institutional development and monitoring are essential factors for the success of any policy instrument for wastewater quality control.

  5. Totally Carrying out Zero Defects Quality Control

    Institute of Scientific and Technical Information of China (English)

    ZhangQingwei; CASCPresident


    Editorial note: On March 22,1992 the launch of LM-2E launch vehicle with an Australian satellite was terminated. A piece of 0.15 milligram aluminum redundance led to the malfunction of the program distributor, which caused the emergency cutoff after 7 seconds of the ignition of the rocket. To bear in mind the painful lesson, China Aerospace Corporation set out March 22 to be “Space Quality Day” in 1994.

  6. Quality control for diagnostic oral microbiology laboratories in European countries

    Directory of Open Access Journals (Sweden)

    Andrew J. Smith


    Full Text Available 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 Network was created. At the European Oral Microbiology Workshop in 2008, 12 laboratories processing clinical oral microbiological samples were identified. All these were recruited to participate into the study and six laboratories from six European countries completed both the online survey and the first QC round. Three additional laboratories participated in the second round. Based on the survey, European oral microbiology laboratories process a significant (mean per laboratory 4,135 number of diagnostic samples from the oral cavity annually. A majority of the laboratories did not participate in any internal or external QC programme and nearly half of the laboratories did not have standard operating procedures for the tests they performed. In both QC rounds, there was a large variation in the results, interpretation and reporting of antibiotic susceptibility testing among the laboratories. In conclusion, the results of this study demonstrate the need for harmonisation of laboratory processing methods and interpretation of results for oral microbiology specimens. The QC rounds highlighted the value of external QC in evaluating the efficacy and safety of processes, materials and methods used in the laboratory. The use of standardised methods is also a prerequisite for multi-centre epidemiological studies that can provide important information on emerging microbes and trends in anti-microbial susceptibility for empirical prescribing in oro-facial infections.


    Buymova, S A; Bubnov, A G


    There is considered the possibility of the use of risk indices with regard to their use in certification and validation of conformity assessment and food conformance, including those recommended for children. There were investigated samples of oatmeals, potted meats, liver pate, fruit-vegetable puree. The calculation of risk values was based on original data of quantitative analysis that was performed with the use of thermogravimetric, photometric, titrimetric, and potentiometric methods, as well as methods of gas-liquid chromatography and atomic absorption spectrophotometry. On the base of data of the chemical analysis of the ingredients of a set of food products, including assigned for baby nutrition, all the tested samples were shown to meet the requirements for the controlled regulatory standards on control indices of quality. The calculation of average daily doses of the intake of metal compounds (Cu, Zn, Fe, Na, Ca, Mg) consumed by adult and child's organisms through tested food showed that such doses are allowable since they do not exceed maximum daily dose and average daily requirements. However, some samples were referred to the category of high risk food, because the used method of individual's lifetime risk calculation takes into consideration all possible negative effects (carcinogenic, mutagenic, teratogenic, embryogenic, etc) of the impact of pollutants on the human body. It is shown that in addition to the sanitary and hygienic criteria of food quality, the risks of such food consumption should be taken into consideration by the Technical Regulations and other normative documentations.

  8. Impact of surveillance rounds on adherence to infection control policies and procedures at a children's hospital. (United States)

    Chatterjee, Archana; Heybrock, Brenda; Plummer, Sharon; Eischen, Kay


    Adherence to written infection control policies and procedures was studied and on-site education was provided for 1 year at a children's hospital. There was significant improvement in sharp objects disposal, hazardous waste handling, availability of personal protective equipment, isolation precautions, and staff knowledge regarding location of the exposure control plan.

  9. Quality assurance and quality control programme in use at the individual monitoring service of ITN-DPRSN

    Energy Technology Data Exchange (ETDEWEB)

    Alves, J.G.; Novais, I.; Rangel, S.; Flores, E. [Instituto Tecnologico e Nuclear, Dept. de Proteccao Radiologica e Seguranca Nuclear Estrada Nacional, Sacavem (Portugal)


    The Individual Monitoring Service (I.M.S.) of the Departamento de Proteccao Radiologica e Seguranca Nuclear (D.P.R.S.N.) at the Instituto Tecnologico e Nuclear (I.T.N.) in Portugal operates a thermoluminescence dosimetry system to monitor approximately 3,000 workers for external radiation exposure on a monthly basis. The workers come from nearly 230 facilities in the medical, research and conventional industry fields of activity and almost 85% of the people monitored in 2005 are from medical facilities. The TLD system in use is based on two Harshaw 6600 automatic readers and on the Harshaw 8814 T.L. card and holder containing two detector elements of LiF:Mg,Ti (TLD-100) for the evaluation of Hp(10) and Hp(0.07). All the workers are monitored on a monthly basis using whole body dosemeters. The I.M.S. has implemented a Quality Assurance and Quality Control (Q.A./Q.C.) programme that covers all the aspects of monitoring, from the monitoring request of a customer to the final issue of a dose report. The main aspects of the Q.A./Q.C. programme implemented at the I.M.S. will be presented in this paper using fluxograms and schemes. Several issues will be addressed, e.g., administrative procedures, technical procedures, dealing with complaints, training of staff, etc. The relationship of the I.M.S. with external entities like the customer, the regulatory authority, the central dose registry, the calibration facility, suppliers, maintenance providers, etc. will be mentioned on the administrative procedures described as well as on the technical procedures where applicable. The main technical procedures will be presented in this paper and references will be made to a TLD Quality Control database internally developed and designed for the storage of important Q.C. parameters like the element correction coefficients, reader calibration factors, electronic quality control data generated on a daily basis, and the study of their evolution with time. (author)


    Directory of Open Access Journals (Sweden)

    Claudia Barroso Krause


    Full Text Available The need to produce more sustainable buildings has been influencing the design decisions all over the world. That’s why it is imperative, in Brazil, the development of strategies and method to aid the decision making during the design process, focused on high quality environmental. This paper presents a decision support tool based on the principles of sustainable construction developed by the Project, Architecture and Sustainability Research Group (GPAS of Federal University of Rio de Janeiro – Brazil. The methodology has been developed for the selection of a preliminary design of a laboratory to be built at Rio Technology Park at the University campus. The support provided by GPAS occurred in three stages: the elaboration of the Reference Guide for the competitors, the development of a methodology to evaluate the proposed solutions (based on environmental performance criteria and the assistance of the members of jury in the trial phase. The theoretical framework was based upon the concepts of the bioclimatic architecture, the procedures specified by the certification HQE® (Haute Qualité Environnementale and the method suggested by the ADDENDA® architecture office. The success of this experience points out the possibility to future application in similar cases.

  11. Combined Control Scheme for Monitoring Quality Characteristics

    Directory of Open Access Journals (Sweden)

    Adekeye K.S.


    Full Text Available In the literature, the Exponentially Weighted Moving Average (EWMA and Exponentially Weighted Moving Variance (EMWV control schemes have been used separately to monitor the process average and process variability respectively. Here the two are combined and applied on simulated process with different level of variation. The control limit interval (CLI and the average run length (ARL were evaluated for the combined chart. The combined chart performed better than the two independently. Furthermore, an algorithm was developed for the two control charts and implemented on visual basic VB6.0. The obtained results show that the combined EWMA and EWMV control chart is very sensitive in detecting shift in production process and every shift in the process mean is always preceded by shift in the process variability.

  12. Production Quality Control Of Microfluidic Chip Designs

    DEFF Research Database (Denmark)

    Calaon, Matteo; Hansen, Hans Nørgaard; Tosello, Guido


    -beam lithography. Subsequent nickel electroplating was employed to replicate the obtained geometries on the tool, which was used to mold on transparent polymer substrates the functional structures. To assess the critical factors affecting the replication quality throughout the different steps of the proposed...... process chain, test geometries were designed and produced on the side of the functional features. The so called “Finger Print” of the lithography and molding processes was qualitatively and quantitatively evaluated through scanning electron microscopy and atomic force microscopy respectively. The entire...

  13. Implementation to spanish protocol of quality control of accelerators to daily control of electron beams; Implementacion del protocolo espanol de control de calidad de aceleradores al control diario de haces de electrones

    Energy Technology Data Exchange (ETDEWEB)

    Adaimi Hernandez, P.; Ramirez Ros, J. C.; Casa de Julian, M. A. de la; Clemente Gutierrez, F.; Cabello Murillo, E.; Diaz Fuente, R.; Ferrando Sanchez, A.


    A revised procedure for daily control of the electron beams to make measurements more meaningful physically, having a better reproducibility and more in line with the recommendations of the Spanish Protocol for Quality Control in Electron Linear Accelerators Clinical Use. The daily quality control beams of high energy electrons that had been done so far was the finding that the record of a series of measures (symmetry, uniformity, stability, energy, beam central dose) were within tolerance values established. The amendment is to check the beam quality by directly measuring changes in absorption depth at which the dose is reduced to half its maximum value, R50.

  14. Web quality control for lectures: Supercourse and (United States)

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


    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 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 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.

  15. Modal control theory and application to aircraft lateral handling qualities design (United States)

    Srinathkumar, S.


    A multivariable synthesis procedure based on eigenvalue/eigenvector assignment is reviewed and is employed to develop a systematic design procedure to meet the lateral handling qualities design objectives of a fighter aircraft over a wide range of flight conditions. The closed loop modal characterization developed provides significant insight into the design process and plays a pivotal role in the synthesis of robust feedback systems. The simplicity of the synthesis algorithm yields an efficient computer aided interactive design tool for flight control system synthesis.

  16. Quality Control of Temperature and Salinity from CTD based on Anomaly Detection

    CERN Document Server

    Castelão, Guilherme P


    The CTD is a set of sensors used by oceanographers to measure fundamental hydrographic properties of the oceans. It is characterized by a high precision product, only achieved if a quality control procedure identifies and removes the bad samples. Such procedure has been traditionally done by a sequence of independent tests that minimize false negatives. It is here proposed a novel approach to identify the bad samples as anomalies in respect to the typical behavior of good data. Several tests are combined into a single multidimensional evaluation to provide a more flexible classification criterion. The traditional approach is reproduced with an error of 0.04%, otherwise, the Anomaly Detection technique surpasses the reference if calibrated by visual inspection. CoTeDe is a Python package developed to apply the traditional and the Anomaly Detection quality control of temperature and salinity data from CTD, and can be extended to XBT, ARGO and other sensors.

  17. Comparison of bar pattern and edge method for MTF measurement in radiology quality control

    Energy Technology Data Exchange (ETDEWEB)

    Alvarez, M.; Alves, A.F.F; Bacchim Neto, F.A.; Pavan, A.L.M.; Rosa, M.E.D.; Miranda, J.R.A.; Pina, D.R. de, E-mail: [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil)


    Spatial resolution is one of the parameters that is routinely checked during acceptance procedures and regular quality control measurements. The spatial resolution of a radiographic imaging device is most appropriately expressed in terms of its modulation transfer function (MTF), which indicates the decline of detector spatial resolution with spatial frequency. Traditionally used methods of MTF measurement involve imaging either a narrow slit or a sharp edge to obtain the detector line spread function (LSF), whose frequency transform leads to the MTF. In this work is presented a study of the measurement of the limiting spatial resolution using the MTF method and the line-pair bar-pattern method. Our aim is to compare the bar-pattern method with the MTF method and then evaluate what method is the best for the dairy quality control tests and when is better to perform one test or other. These acquisition procedures were tested according to its reproducibility and variation due to noise. (author)

  18. Colorimetry as Quality Control Tool for Individual Inkjet-Printed Pediatric Formulations

    DEFF Research Database (Denmark)

    Wickström, Henrika; Nyman, Johan O; Indola, Mathias


    Printing technologies were recently introduced to the pharmaceutical field for manufacturing of drug delivery systems. Printing allows on demand manufacturing of flexible pharmaceutical doses in a personalized manner, which is critical for a successful and safe treatment of patient populations...... with specific needs, such as children and the elderly, and patients facing multimorbidity. Printing of pharmaceuticals as technique generates new demands on the quality control procedures. For example, rapid quality control is needed as the printing can be done on demand and at the point of care. This study...... evaluated the potential use of a handheld colorimetry device for quality control of printed doses of vitamin Bs on edible rice and sugar substrates. The structural features of the substrates with and without ink were also compared. A multicomponent ink formulation with vitamin B1, B2, B3, and B6...

  19. VPLS Based Quality and Cost Control for Tennessee Eastman Process

    Institute of Scientific and Technical Information of China (English)

    宋凯; 王海清; 李平


    Product quality and operation cost control obtain increasing emphases in modern chemical system engineering. To improve the fault detection power of the partial least square (PLS) method for quality control, a new QRPV statistic is proposed in terms of the VP (variable importance in projection) indices of monitored process variables, which is significantly advanced over and different from the conventional Q statistic. QRPV is calculated only by the residuals of the remarkable process variables (RPVs). Therefore, it is the dominant relation between quality and RPV not all process variables (as in the case of the conventional PLS) that is monitored by this new VP-PLS (VPLS) method. The combination of QRPV and T2 statistics is applied to the quality and cost control of the Tennessee Eastman (TE) process, and weak faults can be detected as quickly as possible. Consequently, the product quality of TE process is guaranteed and operation costs are reduced.

  20. Advancement in modern approaches to mineral production quality control (United States)

    Freidina, EV; Botvinnik, AA; Dvornikova, AN


    The natural resource potential of mineral deposits is represented by three categories: upside, attainable and investment. A modern methodology is proposed in this paper for production quality control, and its tools aimed at ensuring agreement between the product quality and the market requirements are described. The definitions of the costs of the product quality compliance and incompliance with the consumer requirements are introduced; the latter is suggested to use in evaluating resource potential of mineral deposits at a certain degree of probability.

  1. Establishment of quality assurance procedures for aquatic toxicity testing with the nematode Caenorhabditis elegans

    Energy Technology Data Exchange (ETDEWEB)

    Freeman, M.N.; Marse, T.J.; Williams, P.L. [Univ. of Georgia, Athens, GA (United States). Environmental Health Science Program


    In this study initial data were generated to develop laboratory control charts for aquatic toxicity testing using the nematode Caenorhabditis elegans. Tests were performed using two reference toxicants: CdCl{sub 2} and CuCl{sub 2}. All tests were performed for 24 h without a food source and of 48 h with a food source in a commonly used nematode aquatic medium. Each test was replicated 6 times with each replicate having 6 wells per concentration with 10 {+-} 1 worms per well. Probit analysis was used to estimate LC{sub 50} values for each test. The data were used to construct a mean ({bar x}) laboratory control chart for each reference toxicant. The coefficient of variation (CV) for three of the four reference toxicant tests was less than 20%, which demonstrates an excellent degree of reproducibility. These CV values are well within suggested standards for determination of organism sensitivity and overall test system credibility. A standardized procedure for performing 24 h and 48 h aquatic toxicity studies with C. elegans is proposed.

  2. [Site inspection procedures and methods for evaluation of the quality management system of in vitro diagnostic regents]. (United States)

    Tian, Shaolei


    In this paper, the procedures, logos, methods, essentials as well as notable problems for inspecting the qualification management system of in vitro diagnostic regent manufactures are discussed, with aims of promoting inspector's practical level and consequentially ensuring the quality, standard and efficacy of the inspection.

  3. 40 CFR Appendix B to Part 75 - Quality Assurance and Quality Control Procedures (United States)


    ... system polynomial coefficients, K factors or mathematical algorithms, changing of temperature and... Explain the chain of custody employed in packing, transporting, and analyzing the sorbent traps (see... calibration adjustments are made by means of a mathematical algorithm programmed into the data acquisition and...

  4. Academic Quality Control in Nigerian Universities: Exploring Lecturers' Perceptions (United States)

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


    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…

  5. Academic Quality Control in Nigerian Universities: Exploring Lecturers' Perceptions (United States)

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


    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…

  6. 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.


    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)

  7. Quality Changes of Frozen Meat During Storage and Control Measures

    Institute of Scientific and Technical Information of China (English)

    DU Jiangping


    The frozen is a common method of meat storage, generally applications in meat industrial. However, the quality of meat still have taken place changes even in the low temperature, This article discussion on the changes of frozen meat quality during freezing storage, and give the corresponding control measures.

  8. Computerized tomography quality control program; Programa de controle da qualidade em tomografia computadorizada

    Energy Technology Data Exchange (ETDEWEB)

    Tiecher, Maria Ester S.; Ferreira, Nadya Maria P.D. [Instituto Militar de Engenharia (IME), Rio de Janeiro, RJ (Brazil); Carlos, Marcia Terezinha [Instituto de Radioprotecao e Dosimetria (IRD), Rio de Janeiro, RJ (Brazil)


    Computed Tomography, CT, is a practice used in radiodiagnosis, based on radiation (x-rays) interaction with matter and image reconstruction. No doubt there are great benefits to this procedure, but some problems can be found with it. Little attention has been paid to the high incident doses which patients undergo during these tests. This work is intended to develop a quality control program over CT. The methodology evaluates the performance of the CT by studying the image`s physical parameters. It also verifies the effectiveness of the beam according to the measurement of the doses, Computed Tomography Dose Index. In this case, this is done by using measurements in simulators (phantoms). Internationally established tests were implemented: high resolution and low contrast, linearity, uniformity of CT numbers, noise, slice thickness and artifacts. All the tests were performed at the Hospital Central do Exercito. Doses measurements were done using a pencil ionization chamber and phantom heads and bodies, supplied by the equipment`s manufacturer. The obtained results showed the efficiency of the methodology allowing for the correction of some drawbacks without deviating from the routine procedures. (author) 12 refs., 4 figs., 4 tabs.

  9. p-charts in the quality control of the grading process in the high education

    Directory of Open Access Journals (Sweden)

    Savić Mirko


    Full Text Available European countries are making efforts to change their educational system These changes include implementation of the ECTS (European Credit Transfer and Accumulation System and are based on the Bologna Declaration. Adoption of ECTS will necessitate new quality standards in higher education especially in grading procedures. With only small modifications, the control charts(such as p-charts used in production and distribution applications can be applied to educational purposes.

  10. Quality control and database on resistive plate chambers for the BESⅢ experiment

    Institute of Scientific and Technical Information of China (English)

    HAN Ji-Feng; MA Lie-Hua; ZHANG Jia-Wen; CHEN Jin; ZHAO Jian-Bing; YAO Ning; LIU Qian; XIE Yu-Guang; ZHANG Qing-Min; QIAN Sen


    The chamber production and installation of the BESⅢ MUON identifier system have been finished.The cosmic ray test result after installation shows that the average efficiency is bigger than 95% and can meet the requirement of the design report. A database including all the chamber parameters and performance data has been constructed and is accessible online. The quality control procedures during the production and the database are described.

  11. Cold plasma: Quality control and regulatory considerations (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...

  12. 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)


    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)

  13. NOAA Ship Fairweather Underway Meteorological Data, Quality Controlled (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...

  14. Research Ship Healy Underway Meteorological Data, Quality Controlled (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...

  15. Research Ship Atlantis Underway Meteorological Data, Quality Controlled (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...

  16. NOAA Ship David Starr Jordan Underway Meteorological Data, Quality Controlled (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...

  17. NOAA Ship Henry B. Bigelow Underway Meteorological Data, Quality Controlled (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...

  18. NOAA Ship Delaware II Underway Meteorological Data, Quality Controlled (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...

  19. NOAA Ship Ka'imimoana Underway Meteorological Data, Quality Controlled (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...

  20. Research Ship Laurence M. Gould Underway Meteorological Data, Quality Controlled (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...

  1. NOAA Ship Oregon II Underway Meteorological Data, Quality Controlled (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...

  2. NOAA Ship Miller Freeman Underway Meteorological Data, Quality Controlled (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...

  3. NOAA Ship Pisces Underway Meteorological Data, Quality Controlled (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)...

  4. Research Ship Roger Revelle Underway Meteorological Data, Quality Controlled (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...

  5. Research Ship T. G. Thompson Underway Meteorological Data, Quality Controlled (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...

  6. Research Ship Kilo Moana Underway Meteorological Data, Quality Controlled (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...

  7. Research Ship Southern Surveyor Underway Meteorological Data, Quality Controlled (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...

  8. Research Ship New Horizon Underway Meteorological Data, Quality Controlled (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...

  9. NOAA Ship Okeanos Explorer Underway Meteorological Data, Quality Controlled (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...

  10. Research Ship Nathaniel B. Palmer Underway Meteorological Data, Quality Controlled (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...

  11. Research Ship Aurora Australis Underway Meteorological Data, Quality Controlled (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...

  12. NOAA Ship Ronald Brown Underway Meteorological Data, Quality Controlled (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. NOAA Ship Nancy Foster Underway Meteorological Data, Quality Controlled (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...

  14. Research Ship Tangaroa Underway Meteorological Data, Quality Controlled (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...

  15. Research Ship Melville Underway Meteorological Data, Quality Controlled (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...

  16. Research Ship Atlantis Underway Meteorological Data, Quality Controlled (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...

  17. NOAA Ship Bell M. Shimada Underway Meteorological Data, Quality Controlled (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...

  18. NOAA Ship Rainier Underway Meteorological Data, Quality Controlled (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...

  19. NOAA Ship Hi'ialakai Underway Meteorological Data, Quality Controlled (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...

  20. sampling plans for monitoring quality control process at a plastic ...

    African Journals Online (AJOL)

    Dr Obe

    managing these -activities in an intercultural environment will be of increasing ... adoption of new managerial concepts and .techniques among ... sample for both monitoring and quality control purposes. Prybrutok, et al. 7 observed that the.

  1. Research Ship Robert Gordon Sproul Underway Meteorological Data, Quality Controlled (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...

  2. NOAA Ship Oscar Dyson Underway Meteorological Data, Quality Controlled (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...

  3. Research Ship Atlantic Explorer Underway Meteorological Data, Quality Controlled (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...

  4. NOAA Ship Oscar Elton Sette Underway Meteorological Data, Quality Controlled (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...

  5. NOAA Ship Gordon Gunter Underway Meteorological Data, Quality Controlled (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...

  6. Research Ship Knorr Underway Meteorological Data, Quality Controlled (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...

  7. Ensuring quality control of forensic accounting for efficient and ...

    African Journals Online (AJOL)

    Ensuring quality control of forensic accounting for efficient and effective ... has taken the center stage in every discussion whether in business or social. ... To ensure a valid conclusion of the study the ex-post facto research design was applied.

  8. Research Ship Oceanus Underway Meteorological Data, Quality Controlled (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...

  9. A Quality Assurance Procedure and Evaluation of Rainfall Estimates for C-Band Polarimetric Radar

    Institute of Scientific and Technical Information of China (English)

    HU Zhiqun; LIU Liping; WANG Lirong


    A mobile C-band dual polarimetric weather radar J type (PCDJ),which adopts simultaneous transmission and simultaneous reception (STSR) of horizontally and vertically polarized signals,was first developed in China in 2008.It was deployed in the radar observation plan in the South China Heavy Rainfall Experiment (SCHeREX) in the summer of 2008 and 2009,as well as in Tropical Western Pacific Ocean Observation Experiments and Research on the Predictability of High Impact Weather Events from 2008 to 2010 in China (TWPOR).Using the observation data collected in these experiments,the radar systematic error and its sources were analyzed in depth.Meanwhile an algorithm that can smooth differential propagation phase (ΦDP) for estimating the high-resolution specific differential phase (KDp) was developed.After attenuation correction of reflectivity in horizontal polarization (ZH) and differential reflectivity (ZDR) of PCDJ radar by means of KDP,the data quality was improved significantly.Using quality-controlled radar data,quantitative rainfall estimation was performed,and the resutls were compared with rain-gauge measurements.A synthetic ZH /KDP-based method was analyzed.The results suggest that the synthetic method has the advantage over the traditional ZH-based method when the rain rate is >5 mm h-1.The more intensive the rain rates,the higher accuracy of the estimation.

  10. Mechanisms for quality control of misfolded transmembrane proteins


    Houck, Scott A.; Cyr, Douglas M.


    To prevent the accumulation of misfolded and aggregated proteins, the cell has developed a complex network of cellular quality control (QC) systems to recognize misfolded proteins and facilitate their refolding or degradation. The cell faces numerous obstacles when performing quality control on transmembrane proteins. Transmembrane proteins have domains on both sides of a membrane and QC systems in distinct compartments must coordinate to monitor the folding status of the protein. Additionall...

  11. Analysis of Information Quality in event triggered Smart Grid Control

    DEFF Research Database (Denmark)

    Kristensen, Thomas le Fevre; Olsen, Rasmus Løvenstein; Rasmussen, Jakob Gulddahl


    dependability of existing networks. We develop models for network delays and information dynamics, and uses these to model information quality for three given information access schemes in an event triggered control scenario. We analyse the impact of model parameters, and show how optimal choice of information...... access scheme depends on network conditions as well as trade-offs between information quality, network resources and control reactivity....

  12. Quality control of injection moulded micro mechanical parts

    DEFF Research Database (Denmark)

    Gasparin, Stefania; Tosello, Guido; Hansen, Hans Nørgaard


    Quality control of micro components is an increasing challenge. Smaller mechanical parts are characterized by smaller tolerance to be verified. This paper focuses on the dimensional verification of micro injection moulded components selected from an industrial application. These parts are measured...... using an Optical Coordinate Measuring Machine (OCMM), which guarantees fast surface scans suitable for in line quality control. The uncertainty assessment of the measurements is calculated following the substitution method. To investigate the influence parameters in optical coordinate metrology two...

  13. [Air quality control systems: heating, ventilating, and air conditioning (HVAC)]. (United States)

    Bellucci Sessa, R; Riccio, G


    After a brief illustration of the principal layout schemes of Heating, Ventilating, and Air Conditioning (HVAC), the first part of this paper summarizes the standards, both voluntary and compulsory, regulating HVAC facilities design and installation with regard to the question of Indoor Air Quality (IAQ). The paper then examines the problem of ventilation systems maintenance and the essential hygienistic requirements in whose absence HVAC facilities may become a risk factor for people working or living in the building. Lastly, the paper deals with HVAC design strategies and methods, which aim not only to satisfy comfort and air quality requirements, but also to ensure easy and effective maintenance procedures.

  14. What is the minimum number of patients for quality control of lung cancer management in Norway? (United States)

    Skaug, Knut; Eide, Geir E; Gulsvik, Amund


    There are few data available on the optimal number of lung cancer patients needed to generate and compare estimates of quality between units managing lung cancer. The number of lung cancer patients per management unit varies considerably in Norway, where there are 42 hospitals that treated between 1 and 454 lung cancer patients in 2011. To estimate the differences in quality indicators that are of sufficient importance to change a pulmonary physician's lung cancer management program, and to estimate the size of the patient samples necessary to detect such differences. Twenty-six physicians were asked about the relative differences from a national average of quality indicators that would change their own lung cancer management program. Sample sizes were calculated to give valid estimates of quality of a management unit based on prevalence of quality indicators and minimally important differences (MID). The average MID in quality indicators that would cause a change in management varied from 18% to 24% among 26 chest physicians, depending on the indicator. To generate precise estimates for quality control of lung cancer care in Norway, the number of management units must be reduced. Given the present willingness of chest physicians to change their procedures for management of lung cancer according to the results of quality control indicators, we recommend a maximum of 10 units with a minimum of 200 incident lung cancer patients per year for each management center. © 2015 John Wiley & Sons Ltd.

  15. Production control system specified quality sausage products

    Directory of Open Access Journals (Sweden)

    A. V. Tokarev


    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

  16. Quality control based on electrical resistivity measurements


    Ferreira, Rui Miguel; Jalali, Said


    The electrical resistivity of concrete is one of the main parameters controlling the initiation and propagation of reinforcement corrosion. It is common knowledge that concrete electrical resistivity is mainly dependent on the w/c ratio (pore connectivity), volume and type of cement, temperature and the moisture. This research work studies the effect of specimen shape and temperature of measurement on electrical resistivity measurements of concrete using the four-point Werner electrode. In ad...

  17. Procedures for identifying reasonably available control technology for stationary sources of PM-10. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Fitzpatrick, M.J.; Ellefson, R.


    The guidance document sets forth procedures and identifies sources of information that will assist State and local air pollution control agencies in determining Reasonably Available Control Technology (RACT) for PM-10 (particulate matter having a nominal aerometric diameter of 10 microns or less) emission from existing stationary sources on a case-by-case basis. It provides an annotated bibliography of documents to aid in identifying the activities that cause PM-10 emissions as well as applicable air pollution control measures and their effectiveness in reducing emissions. The most stringent state total particulate matter (PM) emission limits are identified for several categories of PM-10 sources and compared to available emission test data. Finally, guidance is provided on procedures for estimating total capital investment and total annual cost of the control measures which are generally used to control PM-10 emissions.

  18. Role of Protein Quality Control Failure in Alcoholic Hepatitis Pathogenesis

    Directory of Open Access Journals (Sweden)

    Samuel W. French


    Full Text Available The mechanisms of protein quality control in hepatocytes in cases of alcoholic hepatitis (AH including ufmylation, FAT10ylation, metacaspase 1 (Mca1, ERAD (endoplasmic reticulum-associated degradation, JUNQ (juxta nuclear quality control, IPOD (insoluble protein deposit autophagocytosis, and ER stress are reviewed. The Mallory–Denk body (MDB formation develops in the hepatocytes in alcoholic hepatitis as a consequence of the failure of these protein quality control mechanisms to remove misfolded and damaged proteins and to prevent MDB aggresome formation within the cytoplasm of hepatocytes. The proteins involved in the quality control pathways are identified, quantitated, and visualized by immunofluorescent antibody staining of liver biopsies from patients with AH. Quantification of the proteins are achieved by measuring the fluorescent intensity using a morphometric system. Ufmylation and FAT10ylation pathways were downregulated, Mca1 pathways were upregulated, autophagocytosis was upregulated, and ER stress PERK (protein kinase RNA-like endoplasmic reticulum kinase and CHOP (CCAAT/enhancer-binding protein homologous protein mechanisms were upregulated. In conclusion: Despite the upregulation of several pathways of protein quality control, aggresomes (MDBs still formed in the hepatocytes in AH. The pathogenesis of AH is due to the failure of protein quality control, which causes balloon-cell change with MDB formation and ER stress.

  19. Control of Risks Through the Use of Procedures: A Method for Evaluating the Change in Risk (United States)

    Praino, Gregory T.; Sharit, Joseph


    This paper considers how procedures can be used to control risks faced by an organization and proposes a means of recognizing if a particular procedure reduces risk or contributes to the organization's exposure. The proposed method was developed out of the review of work documents and the governing procedures performed in the wake of the Columbia accident by NASA and the Space Shuttle prime contractor, United Space Alliance, LLC. A technique was needed to understand the rules, or procedural controls, in place at the time in the context of how important the role of each rule was. The proposed method assesses procedural risks, the residual risk associated with a hazard after a procedure's influence is accounted for, by considering each clause of a procedure as a unique procedural control that may be beneficial or harmful. For procedural risks with consequences severe enough to threaten the survival of the organization, the method measures the characteristics of each risk on a scale that is an alternative to the traditional consequence/likelihood couple. The dual benefits of the substitute scales are that they eliminate both the need to quantify a relationship between different consequence types and the need for the extensive history a probabilistic risk assessment would require. Control Value is used as an analog for the consequence, where the value of a rule is based on how well the control reduces the severity of the consequence when operating successfully. This value is composed of two parts: the inevitability of the consequence in the absence of the control, and the opportunity to intervene before the consequence is realized. High value controls will be ones where there is minimal need for intervention but maximum opportunity to actively prevent the outcome. Failure Likelihood is used as the substitute for the conventional likelihood of the outcome. For procedural controls, a failure is considered to be any non-malicious violation of the rule, whether intended or

  20. Application of indices Cp and Cpk to improve quality control capability in clinical biochemistry laboratories. (United States)

    Chen, Ming-Shu; Wu, Ming-Hsun; Lin, Chih-Ming


    The traditional criteria for acceptability of analytic quality may not be objective in clinical laboratories. To establish quality control procedures intended to enhance Westgard multi-rules for improving the quality of clinical biochemistry tests, we applied the Cp and Cpk quality-control indices to monitor tolerance fitting and systematic variation of clinical biochemistry test results. Daily quality-control data of a large Taiwanese hospital in 2009 were analyzed. The test items were selected based on an Olympus biochemistry machine and included serum albumin, aspartate aminotransferase, cholesterol, glucose and potassium levels. Cp and Cpk values were calculated for normal and abnormal levels, respectively. The tolerance range was estimated with data from 50 laboratories using the same instruments and reagents. The results showed a monthly trend of variation for the five items under investigation. The index values of glucose were lower than those of the other items, and their values were usually <2. In contrast to the Cp value for cholesterol, Cpk of cholesterol was lower than 2, indicating a systematic error that should be further investigated. This finding suggests a degree of variation or failure to meet specifications that should be corrected. The study indicated that Cp and Cpk could be applied not only for monitoring variations in quality control, but also for revealing inter-laboratory qualitycontrol capability differences.

  1. Patient-specific dosimetric endpoints based treatment plan quality control in radiotherapy. (United States)

    Song, Ting; Staub, David; Chen, Mingli; Lu, Weiguo; Tian, Zhen; Jia, Xun; Li, Yongbao; Zhou, Linghong; Jiang, Steve B; Gu, Xuejun


    In intensity modulated radiotherapy (IMRT), the optimal plan for each patient is specific due to unique patient anatomy. To achieve such a plan, patient-specific dosimetric goals reflecting each patient's unique anatomy should be defined and adopted in the treatment planning procedure for plan quality control. This study is to develop such a personalized treatment plan quality control tool by predicting patient-specific dosimetric endpoints (DEs). The incorporation of patient specific DEs is realized by a multi-OAR geometry-dosimetry model, capable of predicting optimal DEs based on the individual patient's geometry. The overall quality of a treatment plan is then judged with a numerical treatment plan quality indicator and characterized as optimal or suboptimal. Taking advantage of clinically available prostate volumetric modulated arc therapy (VMAT) treatment plans, we built and evaluated our proposed plan quality control tool. Using our developed tool, six of twenty evaluated plans were identified as sub-optimal plans. After plan re-optimization, these suboptimal plans achieved better OAR dose sparing without sacrificing the PTV coverage, and the dosimetric endpoints of the re-optimized plans agreed well with the model predicted values, which validate the predictability of the proposed tool. In conclusion, the developed tool is able to accurately predict optimally achievable DEs of multiple OARs, identify suboptimal plans, and guide plan optimization. It is a useful tool for achieving patient-specific treatment plan quality control.

  2. Matching Procedures at the Time of Immediate Breast Reconstruction: An American College of Surgeons National Surgical Quality Improvement Program Study of 24,191 Patients. (United States)

    Cooney, Carisa M; Sebai, Mohamad E; Ogbuagu, Onyebuchi; Devulapalli, Chris; Manahan, Michele A; Rosson, Gedge D


    The purpose of this study was to assess for compounded risk of postoperative morbidity with the addition of a simultaneous contralateral breast matching procedure at the time of mastectomy and immediate breast reconstruction. 2005 to 2012 American College of Surgeons National Surgical Quality Improvement Program databases were used to identify cases of mastectomy and immediate breast reconstruction with and without simultaneous contralateral breast matching procedures. Matching procedures included mastopexy, reduction mammaplasty, and augmentation mammaplasty. Thirty-day postoperative morbidity was assessed using univariable and multivariable logistic regression. Of 59,766 mastectomy patients, 24,191 (40 percent) underwent immediate breast reconstruction: 903 (3.7 percent) underwent matching procedures and 23,288 (96.3 percent) did not. Univariable logistic regression demonstrated that the matching procedure group had statistically significantly higher overall morbidity (OR, 1.288; 95 percent CI, 1.022 to 1.623; p = 0.032). Although surgical and systemic morbidity did not differ significantly, the matching procedure group demonstrated higher risk for superficial surgical-site infection (OR, 1.57; 95 percent CI, 1.066 to 2.31; p = 0.022), reconstruction failure (OR, 1.69; 95 percent CI, 1.014 to 2.814; p = 0.044), and pulmonary embolism (OR, 2.54; 95 percent CI, 1.01 to 6.37; p = 0.048). Controlling for possible confounders, multivariable logistic regression rendered the relationship between matching procedure and complications insignificant (OR, 1.17; 95 percent CI, 0.92 to 1.48; p = 0.2). These data suggest that preoperative comorbidities and other patient-related factors may have a larger influence on postoperative morbidity than the addition of a contralateral matching procedure alone. Therapeutic, III.

  3. A survey of cross-infection control procedures: knowledge and attitudes of Turkish dentists

    Directory of Open Access Journals (Sweden)

    Emir Yüzbasioglu


    Full Text Available OBJECTIVES: The objective of this study was to investigate the knowledge, attitudes and behavior of Turkish dentists in Samsun City regarding cross-infection control. MATERIAL AND METHODS: A questionnaire was designed to obtain information about procedures used for the prevention of cross-infection in dental practices and determine the attitudes and perceptions of respondent dental practitioners to their procedures. The study population included all dentists in the city of Samsun, Turkey, in April 2005 (n=184. The questionnaire collected data on sociodemographic characteristics, knowledge and practice of infection control procedures, sterilization, wearing of gloves, mask, use of rubber dam, method of storing instruments and disposal methods of contaminated material, etc. Questionnaire data was entered into a computer and analyzed by SPSS statistical software. RESULTS: From the 184 dentists to whom the questionnaires were submitted, 135 participated in the study (overall response rate of 73.36%. As much as 74.10% dentists expressed concern about the risk of cross-infection from patients to themselves and their dental assistants. Forty-three percent of the participants were able to define "cross-infection" correctly. The greatest majority of the respondents (95.60% stated that all patients have to be considered as infectious and universal precautions must apply to all of them. The overall responses to the questionnaire showed that the dentists had moderate knowledge of infection control procedures. CONCLUSIONS: Improved compliance with recommended infection control procedures is required for all dentists evaluated in the present survey. Continuing education programs and short-time courses about cross-infection and infection control procedures are suitable to improve the knowledge of dentists.

  4. Quality control throughout the production process of infant food. (United States)

    Hamrin, Pia; Hoeft, Birgit


    The manufacture of infant food is a highly complex process and needs an effective quality control beyond classical in-process parameters and a final microbiological analysis. To ensure a safe end -product, various tools, such as the Hazard Analysis Critical Control Points (HACCP), have been developed to facilitate the management of food safety. Every single infant formula ingredient must have an excellent quality and safety approach because even if an ingredient is used in very small quantities in a single product, serious consequences may arise if the quality and product safety are not taken seriously by the ingredient manufacturer. The purpose of this article was twofold: firstly, to briefly describe existing Quality Management Systems and, secondly, to highlight the consequences of non-quality.

  5. Flying qualities - A costly lapse in flight-control design (United States)

    Berry, D. T.


    Generic problems in advanced aircraft with advanced control systems which suffer from control sensitivity, sluggish response, and pilot-induced oscillation tendencies are examined, with a view to improving techniques for eliminating the problems in the design phase. Results of two NASA and NASA/AIAA workshops reached a consensus that flying qualities criteria do not match control system development, control system designers are not relying on past experience in their field, ground-based simulation is relied on too heavily, and communications between flying qualities and control systems engineers need improvement. A summation is offered in that hardware and software have outstripped the pilot's capacity to use the capabilities which new aircraft offer. The flying qualities data base is stressed to be dynamic, and continually redefining the man/machine relationships.

  6. Quality control of cemented waste forms

    Energy Technology Data Exchange (ETDEWEB)

    Slate, L.J.


    To insure that cemented radwaste remains immobilized after disposal, certain standards have been set in Europe by the Commission of the European Communities. One such standard is compressive strength. If the compressive strength can be predicted during the early curing stages, time and money can be saved and the quality of the final waste form guaranteed. It was determined that the 7- and 28-day compressive strength from radwaste cementation can be predicted during the mixing and early curing stages by at least three methods. The three that were studied were maturity, rheology, and impedance. Maturity is a temperature-to-time measurement, rheology is a shear stress-to-shear rate measurement, and impedance is the opposition offered to the flow of alternating current. These three methods were employed on five different cemented radwaste concentrations with three different water-to-cement ratios; thus, a total of 15 different mix designs were considered. The results showed that the impedance was the easiest to employ for an on-line process. The results of the impedance method showed a very good relationship between impedance and water-to-cement ratio; therefore, an accurate prediction of compressive strength of cemented radwaste can be drawn from this method. The results of the theology method were very good. The method showed that concrete conforms to the Bingham plastic rheologic model, and the theology method can be used to predict the compressive strength of cemented radwaste, but may be too cumbersome. The results of the maturity method were shown to be limited in accuracy for determining compressive strength.

  7. Quality control of cast brake discs

    Directory of Open Access Journals (Sweden)

    M. Stawarz


    Full Text Available The largest industrial application so far have the gray cast irons which are characterized by low tensile and bending strength, while at the same time they have good ultimate comprehensive strength. Additionally, the fatigue strength of gray cast irons is comparatively low and they are only to some extend sensitive for the surface waters effects. Cast iron is the material, which is comparatively easy to be processed, and for this reason – it is not expensive. Brake discs are exploited in particularly hard conditions. They must be resistant both against the thermal fatigue and abrasion wearing (at dry friction as well as against seizing, corrosion and mechanical load [1-3]. The gray cast iron, better than other materials, fulfills all the requirements necessary for making the material for the casts resistant against such tough conditions. This work reflects the researches aiming to define the quality of cast brake discs (ventilated and non-ventilated ones upon a period of their exploitation in real conditions. The following researches were performed: evaluations of the disc surface condition, measurement of disc thickness, examination of run – out flank and metallographic analysis. In order to more detailed recognition of mechanisms and reasons of brake discs wearing in real conditions, one should conduct additional examinations: computer analysis of the microstructure, chemical composition analysis, etc., as well as study of the technology of their production in foundries, where they are manufactured [4]. By obtaining the full set of the mentioned above data one can draw final conclusions and remove causes of possible defects.

  8. Surgical trials in oncology. the importance of quality control in the TME trial. (United States)

    Klein Kranenbarg, E; van de Velde, C J H


    Results from randomised trials provide the best scientific evidence of efficacy or inefficacy of the therapy. The evaluation of surgical procedures involves problems in addition to those associated with medical experimentation. Surgery, unlike a pill, is not a standardised, reproducible entity, but a unique product whose details are defined by, for example, the skill of the surgeon. Quality assurance is important for treatment and also for data handling. The different treatments (surgery, pathology, radiotherapy, etc.) should be familiar to all participating physicians prior to the start of the trial. Instructions can be given by means of a well-written protocol, videotapes, workshops and instructors at the dissection table. The data collection and data check should be done by data managers and co-ordinators for the separate disciplines. Errors and missing data should be completed and feedback to the physician is essential. Close contact between an active co-ordinating data centre, including co-ordinators for the separate disciplines, and all participating physicians is essential to conduct a quality controlled multicentre, multidisciplinary trial. Continuous enthusiasm can be maintained by the organisation of regular workshops, distribution of newsletters and trial up-dates at scientific meetings. The efforts from all of the involved co-ordinators, data managers, instructors and physicians have resulted in a very successful trial with rapid accrual, good quality treatments and procedures, good quality data, and a high participation rate among hospitals and patients. Quality control is expensive and labour-intensive, but it is worthwhile.

  9. Effect of different thawing procedures on the quality and fertility of the bull spermatozoa

    Institute of Scientific and Technical Information of China (English)

    Andrey Lyashenko


    Objective: To improve the indicators of motility, survival and fertilizing ability of spermatozoa by optimizing temperature factors and the duration of exposure at unfreezing straws. Methods:Straws by volume 0.25 mL were thawed at water bath temperatures at 65℃, 67℃ and 70℃ for 6-7 seconds and at 75℃for 4-6 seconds. Impact of exposure time and temperature thawing in the water bath on motility and survival of spermatozoa were studied. Results:Studies indicate that for the procedure of defrost water bath straws in seven seconds for temperature conditions of 65℃, 67℃ and 70℃, indicators of progressive motility and absolute survival rate were significantly higher than for the control group an average on 11.4 % (P<0.01). Optimum exposure time (6-7 seconds) and temperature range (65-70 ℃) defrosting semen doses were defined. Conclusions: Owing obtained the positive result, method of thawing was developed which increases the indicators of motility, survival and fertilizing capacity of bull semen.

  10. Quality control of 5mg diazepam suppositories manipulated in the city of Campos Goytacazes – RJ

    Directory of Open Access Journals (Sweden)

    Renata Aparecida Venturi Canzian


    Full Text Available Diazepam suppositories are widely used by children and elderly, and require close attention to quality control because it is a controlled prescription drug. The objective of the study was to analyze diazepam suppositories manipulated in Campos dos Goytacazes, RJ, to verify if they are within the required quality standards, and offer safety and efficiency to patients. We analyzed samples of 5mg diazepam suppositories acquired in five randomly selected pharmacies, identified as Pharmacy A, Pharmacy B, Pharmacy C, Pharmacy D, and Pharmacy E. We ran tests on average weight, organoleptic control, hardness, melting point, and dissolution. Data was analyzed and compared with the requirements of the Brazilian Pharmacopoeia. This analysis was made over a table in Excel. We conclude that only C Pharmacy was approved in all tests, and this is the only laboratory that has analyzed the quality of the product warranty. Laboratories A, B, D and E have been approved in some tests, and failed one or more tests. To ensure quality control, suppositories needed to pass in all tests, which was not the case of these labs. Therefore, we recommended the following procedures to the investigated laboratories: changes in packaging, greater precision in handling, quality control prior to dispensing the product, and efficient pharmaceutical care service.

  11. Analytical quality, performance indices and laboratory service

    DEFF Research Database (Denmark)

    Hilden, Jørgen; Magid, Erik


    analytical error, bias, cost effectiveness, decision-making, laboratory techniques and procedures, mass screening, models, statistical, quality control......analytical error, bias, cost effectiveness, decision-making, laboratory techniques and procedures, mass screening, models, statistical, quality control...

  12. Chronic Low Quality Sleep Impairs Postural Control in Healthy Adults. (United States)

    Furtado, Fabianne; Gonçalves, Bruno da Silva B; Abranches, Isabela Lopes Laguardia; Abrantes, Ana Flávia; Forner-Cordero, Arturo


    The lack of sleep, both in quality and quantity, is an increasing problem in modern society, often related to workload and stress. A number of studies have addressed the effects of acute (total) sleep deprivation on postural control. However, up to date, the effects of chronic sleep deficits, either in quantity or quality, have not been analyzed. Thirty healthy adults participated in the study that consisted of registering activity with a wrist actigraph for more than a week before performing a series of postural control tests. Sleep and circadian rhythm variables were correlated and the sum of activity of the least active 5-h period, L5, a rhythm variable, obtained the greater coefficient value with sleep quality variables (wake after sleep onset WASO and efficiency sleep). Cluster analysis was performed to classify subjects into two groups based on L5 (low and high). The balance tests scores used to asses postural control were measured using Biodex Balance System and were compared between the two groups with different sleep quality. The postural tests were divided into dynamic (platform tilt with eyes open, closed and cursor) and static (clinical test of sensory integration). The results showed that during the tests with eyes closed, the group with worse sleep quality had also worse postural control performance. Lack of vision impairs postural balance more deeply in subjects with chronic sleep inefficiency. Chronic poor sleep quality impairs postural control similarly to total sleep deprivation.

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

    Directory of Open Access Journals (Sweden)

    Krutova A.S.


    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.

  14. [Pharmaceutical product quality control and good manufacturing practices]. (United States)

    Hiyama, Yukio


    This report describes the roles of Good Manufacturing Practices (GMP) in pharmaceutical product quality control. There are three keys to pharmaceutical product quality control. They are specifications, thorough product characterization during development, and adherence to GMP as the ICH Q6A guideline on specifications provides the most important principles in its background section. Impacts of the revised Pharmaceutical Affairs Law (rPAL) which became effective in 2005 on product quality control are discussed. Progress of ICH discussion for Pharmaceutical Development (Q8), Quality Risk Management (Q9) and Pharmaceutical Quality System (Q10) are reviewed. In order to reconstruct GMP guidelines and GMP inspection system in the regulatory agencies under the new paradigm by rPAL and the ICH, a series of Health Science studies were conducted. For GMP guidelines, product GMP guideline, technology transfer guideline, laboratory control guideline and change control system guideline were written. For the GMP inspection system, inspection check list, inspection memo and inspection scenario were proposed also by the Health Science study groups. Because pharmaceutical products and their raw materials are manufactured and distributed internationally, collaborations with other national authorities are highly desired. In order to enhance the international collaborations, consistent establishment of GMP inspection quality system throughout Japan will be essential.

  15. Closed testing procedure for multiplicity control. An application on oxidative stress parameters in Hashimoto's Thyroiditis

    Directory of Open Access Journals (Sweden)

    Angela Alibrandi


    Full Text Available Closed Testing procedures represent an effective solution to the need to make inferences on multiple aspects at the same time, controlling the Familywise Error Rate (FWER, that is the error rate of the hierarchical family. Closed Testing procedures have a high degree of adaptability to a wide range of experimental situations, both in parametric than in non-parametric ambit. The attention is focused on the  Bonferroni-Holm method, frequently used to counteract the problem of multiple comparisons. The present paper aims to show an original application of the Closed Testing procedures for multiplicity control in medical research, with reference to the oxidative stress; in particular the Min-P Bonferrroni-Holm method was applied to the p-value adjustment, related to three parameters (BAP, D-ROMS, AGEs of oxidative stress in Hashimoto’s thyroidytis.


    Directory of Open Access Journals (Sweden)

    Beata Karakiewicz


    Full Text Available Background: The aim of this study was to assess how the chosen socio-demographic factors effect the quality of life in the patients after gynaecological surgical procedures. Materials and Methods: Research was conducted in 2007 among 250 women operated in the Department of Reproduction and Gynaecology, the Pomeranian Medical University in Szczecin. In this survey-based study, we used a standardized quality of life questionnaire, the Women’s Health Questionnaire (WHQ, developed by Dr Myra Hunter at London University. Results: The most numerous patients were those with sleep disorders (38,8%, 37,6% of the surveyed complained of troublesome menstrual symptoms, 26,8% of respondents had disturbing somatic symptoms, short memory and problems with concentration. The lowest percentage of women (12,4% felt anxiety and fear associated with the past gynaecological surgical procedure. Conclusions: 1. General satisfaction and good disposition is declared by the majority of patients after gynaecological surgical procedures. 2. Age, education, having a partner, place of residence, and the number of children are the factors which have significant effect on the quality of life in women after gynaecological procedures.

  17. Knowledge and Attitude of Dental Practitioners in Tabriz Regarding Infection Control Procedures

    Directory of Open Access Journals (Sweden)

    Ali Taghavi Zenouz


    Full Text Available

    Background and aims. Blood-borne infections such as hepatitis B, hepatitis C and HIV might be transmitted from one individual to another during dental procedures. Therefore, sterilization and personal protection procedures are of utmost significance in dental offices. The importance of awareness of cross-infection and antiseptic principles lies in the fact that in most cases it is not possible to identify patients with hepatitis or AIDS. The aim of the present study was to evaluate awareness of infection control procedures among dental practitioners in Tabriz.

    Materials and methods. In this descriptive study, 150 dental practitioners working in clinics and private offices of Tabriz were randomly selected. Data was collected by means of a self-administered questionnaire, which included respondents’ personal profile and questions on infection control and sterilization methods.

    Results. There were no statistically significant differences in the level of knowledge between male and female dental practitioners regarding infection control; however, there was a decline in awareness as age increased.

    Conclusion. The results of the present study suggest that in some cases dental practitioners neglect the principles for personal protection and cross-infection control. Therefore, our society is subject to widespread infection in dental offices and clinics. This potential risk necessitates careful monitoring along with government support of treatment procedures, the inclusion of infection control costs into treatment expenses and an emphasis on continuing education about infection control procedures through seminars and congresses.

  18. Digital systems to acquire radiological imaging. Characteristics and quality control; Sistemas digitales de adquisicion de imagenes radiograficas. Caracteristicas y Control de Calidad

    Energy Technology Data Exchange (ETDEWEB)

    Torres Cabrera, R.; Hernando Gonzalez, I.


    Due to its special characteristics, quality control in digital radiographic systems is very important, even more than in conventional film-screen systems. Differences between digital and analogical images,a in terms of dynamics range, spatial and contrast resolution, and the flexibility of data post-processing require some actions to maintain clinical images in an optimum quality level. Revision 1 of the Spanish Protocol of Quality Control in Diagnostic Radiology includes a chapter dedicated to the quality control of these digital systems for the acquisition of radiographic images. In this paper the different parameters for quality control procedures are described. Also some difficulties to be concerned about (absence of levels of tolerance, access to the raw-data images and related information, availability of use anthropomorphic phantoms, etc, etc) are noted, as well as the most significant aspects of the differences in relation to the ana logical systems. (Author) 15 refs.

  19. 40 CFR 81.112 - Charleston Intrastate Air Quality Control Region. (United States)


    ... Quality Control Regions § 81.112 Charleston Intrastate Air Quality Control Region. The Charleston Intrastate Air Quality Control Region (South Carolina) consists of the territorial area encompassed by the... Quality Control Region: Region 1. 81.107Greenwood Intrastate Air Quality Control Region: Region 2....

  20. 40 CFR 81.88 - Billings Intrastate Air Quality Control Region. (United States)


    ... Quality Control Regions § 81.88 Billings Intrastate Air Quality Control Region. The Metropolitan Billings Intrastate Air Quality Control Region (Montana) has been renamed the Billings Intrastate Air Quality Control... to by Montana authorities as follows: Sec. 481.168Great Falls Intrastate Air Quality Control...

  1. Identification procedure in the modal control of a distributed elastic system

    Directory of Open Access Journals (Sweden)

    Alexander K. Belyaev


    Full Text Available It is necessary to provide the separation of the eigenmodes of elastic objects from the sensor signals and to make it possible to independently affect the modes with the use of actuators when realizing the modal system of controlling an elastic object with distributed parameters. The present paper puts forward an identification procedure which allows separating the vibration modes of the object in measured and control signals in the absence of the object model simulation. The control operability of this procedure was verified by experiment through making a system of active suppression of forced bending vibrations of a metal beam. The experiment showed the high control efficiency of the realized modal system.

  2. Field Operations and Enforcement Manual for Air Pollution Control. Volume III: Inspection Procedures for Specific Industries. (United States)

    Weisburd, Melvin I.

    The Field Operations and Enforcement Manual for Air Pollution Control, Volume III, explains in detail the following: inspection procedures for specific sources, kraft pulp mills, animal rendering, steel mill furnaces, coking operations, petroleum refineries, chemical plants, non-ferrous smelting and refining, foundries, cement plants, aluminum…

  3. 34 CFR 690.81 - Fiscal control and fund accounting procedures. (United States)


    ... 34 Education 3 2010-07-01 2010-07-01 false Fiscal control and fund accounting procedures. 690.81 Section 690.81 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION FEDERAL PELL GRANT PROGRAM Administration of Grant Payments...

  4. 34 CFR 691.81 - Fiscal control and fund accounting procedures. (United States)


    ... 34 Education 3 2010-07-01 2010-07-01 false Fiscal control and fund accounting procedures. 691.81 Section 691.81 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION ACADEMIC COMPETITIVENESS GRANT (ACG) AND NATIONAL SCIENCE AND...

  5. 34 CFR 686.36 - Fiscal control and fund accounting procedures. (United States)


    ... 34 Education 3 2010-07-01 2010-07-01 false Fiscal control and fund accounting procedures. 686.36 Section 686.36 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION, DEPARTMENT OF EDUCATION TEACHER EDUCATION ASSISTANCE FOR COLLEGE AND HIGHER EDUCATION...

  6. Test Report for Acceptance Test Procedure for Pumping and Instrumentation Control Skid ''K''

    CERN Document Server

    Johns, B R


    This is a Test Report for Acceptance Test Procedure (ATP) HNF-4276. This test report provides the results of the inspection and testing of the new Pumping and Instrumentation Control (PIC) skid designed as ''K''. The ATP was successfully completed. A copy of the completed ATP is in the Appendix of this document.

  7. Procedural advice on self-assessment and task selection in learner-controlled education

    NARCIS (Netherlands)

    Taminiau, Bettine; Kester, Liesbeth; Corbalan, Gemma; Van Merriënboer, Jeroen; Kirschner, Paul A.


    Taminiau, E. M. C., Kester, L., Corbalan, G., Van Merriënboer, J. J. G., & Kirschner, P. A. (2010, July). Procedural advice on self-assessment and task selection in learner-controlled education. Paper presented at the Junior Researchers of EARLI Conference 2010, Frankfurt, Germany.

  8. Procedural advice on self-assessment and task selection in learner-controlled education

    NARCIS (Netherlands)

    Taminiau, Bettine; Corbalan, Gemma; Kester, Liesbeth; Van Merriënboer, Jeroen; Kirschner, Paul A.


    Taminiau, E. M. C., Corbalan, G., Kester, L., Van Merriënboer, J. J. G., & Kirschner, P. A. (2010, March). Procedural advice on self-assessment and task selection in learner-controlled education. Presentation at the ICO Springschool, Niederalteich, Germany.

  9. Test Report for Acceptance Test Procedure for Pumping Instrumentation and Control Skid N

    Energy Technology Data Exchange (ETDEWEB)

    KOCH, M.R.


    This is a Test Report for Acceptance Test Procedure (ATP) RPP-5489. This test report provides the results of the inspection and testing of the new Pumping Instrumentation and Control (PIC) skid designed as ''N''. The ATP was successfully completed. A copy of the completed ATP is in the Appendix of this document.

  10. Test Report for Acceptance Test Procedure for Pumping Instrumentation and Control Skid L

    Energy Technology Data Exchange (ETDEWEB)

    KOCH, M.R.


    This is a Test Report for Acceptance Test Procedure (ATP) RPP-5055. This test report provides the results of the inspection and testing of the new Pumping Instrumentation and Control (PIC) skid designed as ''L''. The ATP was successfully completed. A copy of the completed ATP is in the Appendix of this document.

  11. Field Operations and Enforcement Manual for Air Pollution Control. Volume III: Inspection Procedures for Specific Industries. (United States)

    Weisburd, Melvin I.

    The Field Operations and Enforcement Manual for Air Pollution Control, Volume III, explains in detail the following: inspection procedures for specific sources, kraft pulp mills, animal rendering, steel mill furnaces, coking operations, petroleum refineries, chemical plants, non-ferrous smelting and refining, foundries, cement plants, aluminum…

  12. Direct product quality control for energy efficient climate controlled transport of agro-material

    NARCIS (Netherlands)

    Verdijck, G.J.C.; Preisig, H.A.; Straten, van G.


    A (model-based) Product Quality Controller is presented for climate controlled operations involving agro-material, such as storage and transport. This controller belongs to the class of Model Predictive Controllers and fits in a previously developed hierarchical control structure. The new Product

  13. Design and implementation of the STKOS quality-control system

    Institute of Scientific and Technical Information of China (English)

    Haixia; SUN; Danya; LI; Junlian; LI; Sizhu; WU; Tiejun; HU; Qing; QIAN


    Purpose: The aim of this study is to develop and implement a quality-control system to ensure authority control of the different knowledge units for the Scientific & Technological Knowledge Organization Systems(STKOS).Design/methodology/approach: First, we analyzed quality-control requirements based on the construction of the STKOS Metathesaurus. Then we designed a quality-control framework, the task management and transfer mechanism, and a service model. Afterwards, we carried out the experiments to check the rules and algorithms used in the system. Finally, the system was developed, and gradually optimized during its service.Findings: The quality-control system supports collaborative knowledge construction, as well as consistency checks of knowledge units with different granularity levels, including terminologies, relationships, and concepts. The system can be flexibly configured.Research limitations: The system is oriented to an English-language knowledge organization system, and may not perform well with Chinese-language systems and ontologies.Practical implications: The system can be used to support the construction of a single knowledge organization system, as well as data warehousing and interoperable knowledge organization systems. Originality/value: The STKOS quality-control system not only focuses on content building for the knowledge system, but also supports collaborative task management.

  14. The European Conformity Assessment Procedures and the Quality Assurance Instruments for Personal Protective Equipment in the Internal Market. (United States)

    Lambert, Joachim


    Conformity assessment procedures prescribed by European legislation are presented and their concrete implementation is illustrated by the example of personal protective equipment (PPE). The different categories of PPE defined by Council Directive 89/686/EEC are explained with reference to the applicable conformity assessment elements. Quality assurance of production is presented as the central element of the conformity assessment procedure for complex PPE. Special emphasis is put on the necessity of having a regular exchange of views and information among notified bodies in Europe. Ways in which third countries can eventually carry out conformity assessment on the basis of a contract with the European Community Commission are explained.

  15. Controlled release fertilizer improves quality of container longleaf pine seedlings (United States)

    R. Kasten Dumroese; Jeff Parkhurst; James P. Barnett


    In an operational trial, increasing the amount of nitrogen (N) applied to container longleaf pine seedlings by incorporating controlled release fertilizer (CRF) into the media improved seedling growth and quality. Compared with control seedlings that received 40 mg N, seedlings receiving 66 mg N through CRF supplemented with liquid fertilizer had needles that were 4 in...

  16. Analytical techniques and quality control in biomedical trace element research

    DEFF Research Database (Denmark)

    Heydorn, K.


    The small number of analytical results in trace element research calls for special methods of quality control. It is shown that when the analytical methods are in statistical control, only small numbers of duplicate or replicate results are needed to ascertain the absence of systematic errors cau...

  17. Impact of data quality and quantity and the calibration procedure on crop growth model calibration (United States)

    Seidel, Sabine J.; Werisch, Stefan


    Crop growth models are a commonly used tool for impact assessment of climate variability and climate change on crop yields and water use. Process-based crop models rely on algorithms that approximate the main physiological plant processes by a set of equations containing several calibration parameters as well as basic underlying assumptions. It is well recognized that model calibration is essential to improve the accuracy and reliability of model predictions. However, model calibration and validation is often hindered by a limited quantity and quality of available data. Recent studies suggest that crop model parameters can only be derived from field experiments in which plant growth and development processes have been measured. To be able to achieve a reliable prediction of crop growth under irrigation or drought stress, the correct characterization of the whole soil-plant-atmosphere system is essential. In this context is the accurate simulation of crop development, yield and the soil water dynamics plays an important role. In this study we aim to investigate the importance of a site and cultivar-specific model calibration based on experimental data using the SVAT model Daisy. We investigate to which extent different data sets and different parameter estimation procedures affect particularly yield estimates, irrigation water demand and the soil water dynamics. The comprehensive experimental data has been derived from an experiment conducted in Germany where five irrigation regimes were imposed on cabbage. Data collection included continuous measurements of soil tension and soil water content in two plots at three depths, weekly measurements of LAI, plant heights, leaf-N-content, stomatal conductivity, biomass partitioning, rooting depth as well as harvested yields and duration of growing period. Three crop growth calibration strategies were compared: (1) manual calibration based on yield and duration of growing period, (2) manual calibration based on yield

  18. Reliable evaluation method of quality control for compressive strength of concrete

    Institute of Scientific and Technical Information of China (English)

    CHEN Kuen-suan; SUNG Wen-pei; SHIH Ming-hsiang


    Concrete in reinforced concrete structure (RC) is generally under significant compressive stress load. To guarantee required quality and ductility, various tests have to be conducted to measure the concrete's compressive strength based on ACI(American Concrete Institute) code. Investigations of recent devastating collapses of structures around the world showed that some of the collapses directly resulted from the poor quality of the concrete. The lesson learned from these tragedies is that guaranteeing high quality of concrete is one of the most important factors ensuring the safety of the reinforced concrete structure.In order to ensure high quality of concrete, a new method for analyzing and evaluating the concrete production process is called for.In this paper, the indices of fit and stable degree are proposed as basis to evaluate the fitness and stability of concrete's compressive strength. These two indices are combined to define and evaluate the quality index of the compressive strength of concrete. Principles of statistics are used to derive the best estimators of these indices. Based on the outcome of the study, a concrete compressive strength quality control chart is proposed as a tool to help the evaluation process. Finally, a new evaluation procedure to assess the quality control capability of the individual concrete manufacturer is also proposed.

  19. Data Quality Control of the French Permanent Broadband Network in the RESIF Framework. (United States)

    Grunberg, M.; Lambotte, S.; Engels, F.


    In the framework of the RESIF (Réseau Sismologique et géodésique Français) project, a new information system is setting up, allowing the improvement of the management and the distribution of high quality data from the different elements of RESIF. Within this information system, EOST (in Strasbourg) is in charge of collecting real-time permanent broadband seismic waveform, and performing Quality Control on these data. The real-time and validated data set are pushed to the French National Distribution Center (Isterre/Grenoble) to make them publicly available. Furthermore EOST hosts the BCSF-ReNaSS, in charge of the French metropolitan seismic bulletin. This allows to benefit from some high-end quality control based on the national and world-wide seismicity. Here we present the real-time seismic data flow from the stations of the French National Broad Band Network to EOST, and then, the data Quality Control procedures that were recently installed, including some new developments.The data Quality Control consists in applying a variety of processes to check the consistency of the whole system from the stations to the data center. This allows us to verify that instruments and data transmission are operating correctly. Moreover, time quality is critical for most of the scientific data applications. To face this challenge and check the consistency of polarities and amplitudes, we deployed several high-end processes including a noise correlation procedure to check for timing accuracy (intrumental time errors result in a time-shift of the whole cross-correlation, clearly distinct from those due to change in medium physical properties), and a systematic comparison of synthetic and real data for teleseismic earthquakes of magnitude larger than 6.5 to detect timing errors as well as polarity and amplitude problems.

  20. Factors affecting exposure level for medical staff during orthopedic procedures under fluoroscopic control

    Directory of Open Access Journals (Sweden)

    Maria A. Staniszewska


    Full Text Available Background: Extended control of staff exposure in interventional radiology has been legally required over the last few years. This is determined by a number of factors, including the type of procedure, technical conditions and methodology. In orthopedic procedures fluoroscopy is used to control surgical reconstructions. An influence of particular factors on the registered values of doses received by the members of medical team performing osteosynthesis for limb fractures is presented in this paper. Material and Methods: Doses received by individual interventional team members performing specific functions, operator, assisting physicians and scrub nurse, during a series of the procedures were measured. Each person was equipped with 4 dosimetric tools, containing thermoluminescent dosimeters, to measure the equivalent doses for the eyes, hand skin and the neck (outside the shield and to evaluate effective doses. The investigations were performed in operational theatres of 3 hospitals in Łódź. Results: The equivalent doses per one procedure for the eyes and hand skin of the operator were 0.029–0.073 mSv and 0.366–1.604 mSv, respectively. Significantly higher doses were noted during the procedures of intramedullary osteosynthesis, especially for the operator. An average age and body mass index (BMI of patients treated in the monitored hospitals did not differ statistically. Conclusions: Based on the dosimetric measurements the following conclusions can be drawn: in orthopedic procedures of interventional radiology (IR the exposure of the staff is mostly determined by the type of procedure and more precisely by its complexity and by the optimized use of X-ray unit, including pulsed fluoroscopy. It is also revealed that the operator is the most exposed person in the interventional team. Med Pr 2017;68(1:75–83

  1. Model based control charts in stage 1 quality control

    NARCIS (Netherlands)

    A.J. Koning (Alex)


    textabstractIn this paper a general method of constructing control charts for preliminary analysis of individual observations is presented, which is based on recursive score residuals. A simulation study shows that certain implementations of these charts are highly effective in detecting assignable

  2. [Coronary artery bypass surgery: methods of performance monitoring and quality control]. (United States)

    Albert, A; Sergeant, P; Ennker, J


    The strength of coronary bypass operations depends on the preservation of their benefits regarding freedom of symptoms, quality of life and survival, over decades. Significant variability of the results of an operative intervention according to the hospital or the operating surgeon is considered a weakness in the procedure. The external quality insurance tries to reach a transparent service providing market through hospital ranking comparability. Widely available information and competition will promote the improvement of the whole quality. The structured dialog acts as a control instrument for the BQS (Federal Quality Insurance). It is launched in case of deviations from the standard references or statistically significant differences between the results of the operations in any hospital and the average notational results. In comparison to the external control the hospital internal control has greater ability to reach a medically useful statement regarding the results of the treatment and to correct the mistakes in time. An online information portal based on a departmental databank (DataWarehouse, DataMart) is an attractive solution for the physician in order to get transparently and timely informed about the variability in the performance.The individual surgeon significantly influences the short- and long-term treatment results. Accordingly, selection, targeted training and performance measurements are necessary.Strict risk management and failure analysis of individual cases are included in the methods of internal quality control aiming to identify and correct the inadequacies in the system and the course of treatment. According to the international as well as our own experience, at least 30% of the mortalities after bypass operations are avoidable. A functioning quality control is especially important in minimally invasive interventions because they are often technically more demanding in comparison to the conventional procedures. In the field of OPCAB surgery

  3. Quality guaranteed aggregation based model predictive control and stability analysis

    Institute of Scientific and Technical Information of China (English)

    LI DeWei; XI YuGeng


    The input aggregation strategy can reduce the online computational burden of the model predictive controller. But generally aggregation based MPC controller may lead to poor control quality. Therefore, a new concept, equivalent aggregation, is proposed to guarantee the control quality of aggregation based MPC. From the general framework of input linear aggregation, the design methods of equivalent aggregation are developed for unconstrained and terminal zero constrained MPC, which guarantee the actual control inputs exactly to be equal to that of the original MPC. For constrained MPC, quasi-equivalent aggregation strategies are also discussed, aiming to make the difference between the control inputs of aggregation based MPC and original MPC as small as possible. The stability conditions are given for the quasi-equivalent aggregation based MPC as well.

  4. Association of changes in health-related quality of life in coronary heart disease with coronary procedures and sociodemographic characteristics

    Directory of Open Access Journals (Sweden)

    Rollag Arnfinn


    Full Text Available Abstract Background Few studies have focused on the association between the sociodemographic characteristics of a patient with the change in health-related quality of life (HRQOL following invasive coronary procedures, and the results remain inconclusive. The objective of the present study was to measure the temporal changes in HRQOL of patients with coronary heart disease, and assess how these changes are associated with invasive coronary procedures and sociodemographic characteristics. Methods This was a prospective study of 254 patients with angina pectoris and 90 patients with acute coronary syndrome. HRQOL was assessed with the multi-item scales and summary components of the SF-36, both 6 weeks and 2 years after baseline hospitalization in 1998. Paired t-tests and multiple regression analyses were used to assess temporal changes in HRQOL and to identify the associated factors. Results Physical components of HRQOL had improved most during the 2 years following invasive coronary procedures. Our findings indicated that patients with angina pectoris who were younger, male, and more educated were most likely to increase their HRQOL following invasive coronary procedures. When adjusting for baseline HRQOL scores, invasive coronary procedures and sociodemographic characteristics did not explain temporal changes in patients with acute coronary syndrome, possibly due to higher comorbidity. Conclusion Sociodemographic characteristics should be taken into account when comparing and interpreting changes in HRQOL scores in patients with and without invasive coronary procedures.

  5. Validation and quality control of hematolymphoid neoplasm immunophenotyping by flow cytometry

    Institute of Scientific and Technical Information of China (English)

    Wu Lijuan; Xu Dongsheng


    cytometric immunophenotyping has evolved from two-parameter quantitative measurement of peripheral blood lymphocytes to five-or more parameter qualitative evaluation of bone marrow for hematopathology.Leukemia/lymphoma immunophenotyping represent an important addition to histomorphology in the diagnosis,classification and monitoring of hematolymphoid neoplasms. The complexity of five- or more parameter analyses and the interpretation of the data rely on standardization and validation of the instrument,the reagent and the procedure.In addition,clinical flow cytometry laboratories in U.S.are required to document proficiency testing,sample preparation,method accuracy,specificity,sensitivity and precision.CLSI and the U.S.-Canadian Consensus Conference have provided recommendations,but each laboratory is responsible for validating its own qualitative and quantitative procedures.This paper introduces the procedures for quality control of all levels of the operation in a clinical flow cytometry laboratory in USA.


    Institute of Scientific and Technical Information of China (English)


    Sequential chemical extraction procedure has been widely used to partition particulate trace metals into various fractions and to describe the distribution and the statue of trace metals in geo-environment. One sequential chemical extraction procedure was employed here to partition various fractions of Mn in soils. The experiment was designed with quality controlling concept in order to show sampling and analytical error. Experimental results obtained on duplicate analysis of all soil samples demonstrated that the precision was less than 10% (at 95% confidence level). The accuracy was estimated by comparing the accepted total concentration of Mn in standard reference materials (SRMs) with the measured sum of the individual fractions. The recovery of Mn from SRM1 and SRM2 was 94.1% and 98.4% , respectively. The detection limit, accuracy and precision of the sequential chemical extraction procedure were discussed in detailed. All the results suggest that the trueness of the analytical method is satisfactory.

  7. The impact of quality control in RNA-seq experiments (United States)

    Merino, Gabriela A.; Fresno, Cristóbal; Netto, Frederico; Dias Netto, Emmanuel; Pratto, Laura; Fernández, Elmer A.


    High throughput mRNA sample sequencing, known as RNA-seq, is as a powerful approach to detect differentially expressed genes starting from millions of short sequence reads. Although several workflows have been proposed to analyze RNA-seq data, the experiment quality control as a whole is not usually considered, thus potentially biasing the results and/or causing information lost. Experiment quality control refers to the analysis of the experiment as a whole, prior to any analysis. It not only inspects the presence of technical effects, but also if general biological assumptions are fulfilled. In this sense, multivariate approaches are crucial for this task. Here, a multivariate approach for quality control in RNA-seq experiments is proposed. This approach uses simple and yet effective well-known statistical methodologies. In particular, Principal Component Analysis was successfully applied over real data to detect and remove outlier samples. In addition, traditional multivariate exploration tools were applied in order to asses several controls that can help to ensure the results quality. Based on differential expression and functional enrichment analysis, here is demonstrated that the information retrieval is significantly enhanced through experiment quality control. Results show that the proposed multivariate approach increases the information obtained from RNA-seq data after outlier samples removal.

  8. Effectiveness of music interventions for women with high anxiety during coronary angiographic procedures: a randomized controlled. (United States)

    Nilsson, Ulrica


    The purpose was to investigate if women with high pre-procedural anxiety reported higher degree of relaxation and comfort if listening to music during coronary angiographic procedures. A prospective randomized controlled trial was used included 68 patients undergoing coronary angiography and/or PCI. The women were allocated to receive calming music and standard care or standard care only. Relaxation, environmental sound and discomfort associated with lying still were assessed. There was significantly more positive impression of the sound environment and less discomfort associated with lying still in women listening to music in comparison to women who received only standard care. No effect in relaxation was found.

  9. Construction of Control Charts Using Fuzzy Multinomial Quality



    Control charts are the simplest type of on-line statistical process control techniques. One of the basic control charts is P-chart. In classical P-charts, each item classifies as either "nonconforming" or "conforming" to the specification with respect to the quality characteristic. In practice, one may classify each item in more than two categories such as "bad", "medium", "good", and "excellent". Based on this, we introduce a fuzzy multinomial chart ( FM-chart) for monitoring a multinomial p...

  10. Analytical techniques and quality control in biomedical trace element research

    DEFF Research Database (Denmark)

    Heydorn, K.


    The small number of analytical results in trace element research calls for special methods of quality control. It is shown that when the analytical methods are in statistical control, only small numbers of duplicate or replicate results are needed to ascertain the absence of systematic errors cau....../kg. Measurement compatibility is obtained by control of traceability to certified reference materials, (C) 1994 Wiley-Liss, Inc....

  11. Development and application of procedures to evaluate air quality and visibility impacts of low-altitude flying operations

    Energy Technology Data Exchange (ETDEWEB)

    Liebsch, E.J.


    This report describes the development and application of procedures to evaluate the effects of low-altitude aircraft flights on air quality and visibility. The work summarized in this report was undertaken as part of the larger task of assessing the various potential environmental impacts associated with low-altitude military airspaces. Accomplishing the air quality/visibility analysis for the GEIS included (1) development and application of an integrated air quality model and aircraft emissions database specifically for Military Training Route (MTR) or similar flight operations, (2) selection and application of an existing air quality model to analyze the more widespread and less concentrated aircraft emissions from military Operations Areas (MOAs) and Restricted Areas (RAs), and (3) development and application of procedures to assess impacts of aircraft emissions on visibility. Existing air quality models were considered to be inadequate for predicting ground-level concentrations of pollutants emitted by aircraft along MTRs; therefore, the Single-Aircraft Instantaneous Line Source (SAILS) and Multiple-Aircraft Instantaneous Line Source (MAILS) models were developed to estimate potential impacts along MTRs. Furthermore, a protocol was developed and then applied in the field to determine the degree of visibility impairment caused by aircraft engine exhaust plumes. 19 refs., 2 figs., 3 tabs.

  12. Data Quality Assurance Governance


    Montserrat Gonzalez; Stephanie Suhr


    This deliverable describes the ELIXIR-EXCELERATE Quality Management Strategy, addressing EXCELERATE Ethics requirement no. 5 on Data Quality Assurance Governance. The strategy describes the essential procedures and practices within ELIXIR-EXCELERATE concerning planning of quality management, performing quality assurance and controlling quality. It also depicts the overall organisation of ELIXIR with emphasis on authority and specific responsibilities related to quality assurance.

  13. 75 FR 80066 - Quality Control Requirements for Direct Endorsement Lenders; Notice of Proposed Information... (United States)


    ... URBAN DEVELOPMENT Quality Control Requirements for Direct Endorsement Lenders; Notice of Proposed.... This Notice also lists the following information: Title of Proposal: Quality Control Requirements for... lenders, since these institutions must also conduct quality control on all loans they originate...

  14. Variational quality control of hydrographic profile data with non-Gaussian errors for global ocean variational data assimilation systems (United States)

    Storto, Andrea


    Quality control procedures aiming at identifying observations suspected of gross errors are an important component of modern ocean data assimilation systems. On the one hand, assimilating observations whose departures from the background state are large may result in detrimental analyses and compromise the stability of the ocean analysis system. On the other hand, the rejection of these observations may prevent the analysis from ingesting useful information, especially in areas of large variability. In this work, we investigate the quality control of in-situ hydrographic profiles through modifying the probability density function (PDF) of the observational errors and relaxing the assumption of Gaussian PDF. The new PDF is heavier-tailed than Gaussian, thus accommodating the assimilation of observations with large misfits, albeit with smaller weight given to them in the analysis. This implies a different observational term in the analysis equation, and an adaptive quality control procedure based on the innovation statistics themselves. Implemented in a global ocean variational data assimilation system at moderate horizontal resolution, the scheme proves robust and successful in assimilating more observations with respect to the simpler background quality check scheme. This leads to better skill scores against both conventional and satellite observing systems. This approach proves superior also to the case where no quality control is considered. Furthermore, the implementation considers switching on the modified cost function at the 10th iteration of the minimization so that innovation statistics are based on a good approximation of the analysis. Neglecting this strategy and turning on the variational quality control since the beginning of the minimization exhibits worse scores, qualitatively similar to those of the experiment without quality control, suggesting that in this case quality control procedures are too gentle. A specific study investigating the upper

  15. 40 CFR 81.77 - Puerto Rico Air Quality Control Region. (United States)


    ... 40 Protection of Environment 17 2010-07-01 2010-07-01 false Puerto Rico Air Quality Control Region... PROGRAMS (CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.77 Puerto Rico Air Quality Control Region. The Puerto Rico Air Quality Control...

  16. Association between birth control pills and voice quality. (United States)

    Amir, Ofer; Kishon-Rabin, Liat


    The objective was to extend our knowledge of the effect of birth control pills on voice quality in women based on various acoustic measures. A longitudinal comparative study of 14 healthy young women over a 36- to 45-day period. Voices of seven women who used birth control pills and seven women who did not were recorded repeatedly approximately 20 times. Voice samples were analyzed acoustically, using an extended set of frequency perturbation parameters (jitter, relative average perturbation, pitch period perturbation quotient), amplitude perturbation parameters (shimmer, amplitude average perturbation quotient), and noise indices (noise-to-harmonics ratio, voice turbulence index). Voice quality and stability were found to be better among the women who used birth control pills. Lower values were found for all acoustic measures with the exception of voice turbulence index. Results also provided preliminary indication for vocal changes associated with the days preceding ovulation. In contrast to the traditional view of oral contraceptives as a risk factor for voice quality, and in keeping with the authors' previous work, the data in the present study showed that not only did oral contraceptives have no adverse effect on voice quality but, in effect, most acoustic measures showed improved voice quality among women who used the birth control pill. The differences in the noise indices between groups may also shed light on the nature of the effect of sex hormones on vocal fold activity. It was suggested that hormonal fluctuations may have more of an effect on vocal fold regulation of vibration than on glottal adduction.

  17. Mitochondrial Quality Control: Decommissioning Power Plants in Neurodegenerative Diseases

    Directory of Open Access Journals (Sweden)

    Rukmini Mukherjee


    Full Text Available The cell has an intricate quality control system to protect its mitochondria from oxidative stress. This surveillance system is multi-tiered and comprises molecules that are present inside the mitochondria, in the cytosol, and in other organelles like the nucleus and endoplasmic reticulum. These molecules cross talk with each other and protect the mitochondria from oxidative stress. Oxidative stress is a fundamental part of early disease pathogenesis of neurodegenerative diseases. These disorders also damage the cellular quality control machinery that protects the cell against oxidative stress. This exacerbates the oxidative damage and causes extensive neuronal cell death that is characteristic of neurodegeneration.

  18. Meta-QC-Chain: comprehensive and fast quality control method for metagenomic data. (United States)

    Zhou, Qian; Su, Xiaoquan; Jing, Gongchao; Ning, Kang


    Next-generation sequencing (NGS) technology has revolutionized and significantly impacted metagenomic research. However, the NGS data usually contains sequencing artifacts such as low-quality reads and contaminating reads, which will significantly compromise downstream analysis. Many quality control (QC) tools have been proposed, however, few of them have been verified to be suitable or efficient for metagenomic data, which are composed of multiple genomes and are more complex than other kinds of NGS data. Here we present a metagenomic data QC method named Meta-QC-Chain. Meta-QC-Chain combines multiple QC functions: technical tests describe input data status and identify potential errors, quality trimming filters poor sequencing-quality bases and reads, and contamination screening identifies higher eukaryotic species, which are considered as contamination for metagenomic data. Most computing processes are optimized based on parallel programming. Testing on an 8-GB real dataset showed that Meta-QC-Chain trimmed low sequencing-quality reads and contaminating reads, and the whole quality control procedure was completed within 20 min. Therefore, Meta-QC-Chain provides a comprehensive, useful and high-performance QC tool for metagenomic data. Meta-QC-Chain is publicly available for free at:

  19. Quality of life in young patients after bone tumor surgery around the knee joint and comparison with healthy controls.

    NARCIS (Netherlands)

    Bekkering, W.P.; Vliet Vlieland, T.P.M.; Koopman, H.M.; Schaap, G.R.; Schreuder, H.W.B.; Beishuizen, A.; Tissing, W.J.; Hoogerbrugge, P.M.; Anninga, J.K.; Taminiau, A.H.M.


    BACKGROUND: This study aimed to compare the health related quality of life (HRQoL) of children and adolescents after malignant bone tumor surgery of the leg with healthy controls. PROCEDURE: Patients between 8 and 25 years old were cross-sectional recruited. Patients under 16 years of age received t

  20. Quality of Life in Young Patients After Bone Tumor Surgery Around the Knee Joint and Comparison With Healthy Controls

    NARCIS (Netherlands)

    Bekkering, W. Peter; Vlieland, Theodora P. M. Vliet; Koopman, Hendrik M.; Schaap, Gerard R.; Schreuder, H. W. Bart; Beishuizen, Auke; Tissing, Wim J. E.; Hoogerbrugge, Peter M.; Anninga, Jacob K.; Taminiau, Antonie H. M.


    Background. This study aimed to compare the health related quality of life (HRQoL) of children and adolescents after malignant bone tumor surgery of the leg with healthy controls. Procedure. Patients between 8 and 25 years old were cross-sectional recruited. Patients under 16 years of age received t