Journal articles: 'Quality control. eng'

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Skutnik, Zdzisław, Marek Bajda, and Mariusz Lech. "The selection of sealing technologies of the subsoil and hydrotechnical structures and quality assurance." Open Engineering 9, no. 1 (2019): 420–27. http://dx.doi.org/10.1515/eng-2019-0050.

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AbstractVarious types of trenchless methods are extensively used to create engineering barriers for the purpose of achieving relatively low hydraulic conductivity of the subsoil and hydrotechnical structures. The most commonly used technologies of the grouting curtain creating are the DSM (Deep Soil Mixing), WIPS (Vibro Injcted Thin Wall), low-pressure injection and jet-grouting. Vertical barriers are widely used in environmental control systems to restrict the lateral spreading of liquid or gaseous contaminants and for seepage control through and beneath a levees. The barrier walls are constructed in a single or two phases using a slurry composed mainly of bentonite, cementitious materials and water. Often to solve complex geotechnical problems the technologies are combined (e.g. combining DSM and jet grouting). In the paper some examples of practical application of chosen types of technology dedicated different problems solving are presented. The results of geotechnical investigations of hydraulic permeability, shear strength and depth control of cut-off wall are given. The tests were carried out using BAT system, Cone Penetration Tests (CPT) and drillings. The presented test results should help define the technical and financial criteria that should be used to compare grouting based methods and other techniques applicable to the same geotechnical special works. These recommendations should permit an adequate application of grouting techniques and contribute to finding solutions for the delicate problem of ground sealing, notably when proceeding with hydrotechnical or environmental structures placed below water table.

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Koralewski, Grzegorz. "Modelling of the system “driver - automation - autonomous vehicle - road”." Open Engineering 10, no. 1 (2020): 175–82. http://dx.doi.org/10.1515/eng-2020-0016.

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AbstractThe work presents a simulation model of a “driver–automation–autonomous vehicles–road” system which is the basis for synthesis of automatic gear shift control system. The mathematical description makes use of physical quantities which characterise driving torque transformation from the combustion engine to the car driven wheels. The basic components of the model are algorithms for the driver’s action logic in controlling motion velocity, logic of gear shift control functioning regarding direction and moment of switching, for determining right-hand side of differential equations and for motion quality indicators. The model is realised in a form of an application software package, comprising sub-programmes for input data, for computerised motion simulation of cars with mechanical and hydro-mechanical – automatically controlled – transmission systems and for models of characteristic car routes.

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Alhmoud, Lina, and Hussein Al-Zoubi. "IoT Applications in Wind Energy Conversion Systems." Open Engineering 9, no. 1 (2019): 490–99. http://dx.doi.org/10.1515/eng-2019-0061.

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AbstractRenewable energy reliability has been the main agenda nowadays, where the internet of things (IoT) is a crucial research direction with a lot of opportunities for improvement and challenging work. Data obtained from IoT is converted into actionable information to improve wind turbine performance, driving wind energy cost down and reducing risk. However, the implementation in IoT is a challenging task because the wind turbine system level and component level need real-time control. So, this paper is dedicated to investigating wind resource assessment and lifetime estimation of wind power modules using IoT. To illustrate this issue, a model is built with sub-models of an aerodynamic rotor connected directly to a multi-pole variable speed permanent magnet synchronous generator (PMSG) with variable speed control, pitch angle control and full-scale converter connected to the grid. Besides, a large number of various sensors for measurement of wind parameters are integrated with IoT. Simulations are constructed with Matlab/Simulink and IoT ’Thingspeak’ Mathworks web service. IoT has proved to increase the reliability of measurement strategies, monitoring accuracy, and quality assurance.

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Martina, Hlatká, Korec Karel, and Kampf Rudolf. "Design of evaluation tool used to improve the production process." Open Engineering 9, no. 1 (2019): 641–49. http://dx.doi.org/10.1515/eng-2019-0074.

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AbstractThis paper is devoted to the use of statistical methods to ensure the highest quality processes. Specifically, it deals with creating an application in MS Excel which evaluates standard statistical parameters and if the required process capability indices are complied with, then it is possible to proceed to SPC (statistical process control). The application was created in MS Excel using the Visual Basic for Application programming language. In addition to the required calculations, the application also generates forms with all important data. This application was designed to reduce reject rate and improve the production process in a contracting company.

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Wartiainen, Anna-Mari, Markus Harju, Satu Tamminen, Leena Määttä, Tuomas Alatarvas, and Juha Röning. "A tool for finding inclusion clusters in steel SEM specimens." Open Engineering 10, no. 1 (2020): 642–48. http://dx.doi.org/10.1515/eng-2020-0068.

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AbstractNon-metallic inclusions, especially large or clustered inclusions, in steel are usually harmful. Thus, the microscopic analysis of test specimens is an important part of the quality control. This steel purity analysis produces a large amount of individual inclusion information for each test specimen. The interpretation of the results is laborious and the comparison of larger product groups practically impossible. The purpose of this study was to develop an easy-to-use tool for automatic interpretation of the SEM analysis to differentiate clustered and large inclusions information from the manifold individual inclusion information. Because of the large variety of the potential users, the tool needs to be applicable for any steel grade and application, both for liquid and final product specimen, to analyse automatically steel specimen inclusions, especially inclusion clusters, based on the INCA Feature program produced data from SEM/EDS. The developed tool can be used to improve the controlling of the steel purity or for automatic production of new inclusion cluster features that can be utilised further in quality prediction models, for example.

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Hanhila, Mika, Timo Mantere, and Jarmo T. Alander. "FPGA–implementation of PID-controller by differential evolution optimization." Open Engineering 8, no. 1 (2018): 395–402. http://dx.doi.org/10.1515/eng-2018-0038.

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Abstract We will describe an FPGA implementation of PID-controller that uses differential evolution to optimize the coefficients of the PID controller, which has been implemented in VHDL. The original differential evolution algorithm was improved by ranking based mutation operation and self-adaptation of mutation and crossover parameters. Ranking-based mutation operation improves the quality of solution, convergence rate and success of optimization. Due to the self-adaptive control parameters, the user does not have to estimate the mutation and crossover rates. Optimization have been performed by calculating for each generation fitness value by means of trial parameters. The final optimal parameters are selected based on the minimum fitness.

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Kriga, A. S., S. V. Nikitin Nikitin, E. L. Ovchinnikova, et al. "On implementation of «Clean air» federal project in Omsk." Health Risk Analysis, no. 4 (December 2020): 31–45. http://dx.doi.org/10.21668/health.risk/2020.4.04.eng.

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The first two years of «Clean air» Federal project in Omsk have been completed and preliminary results have been estimated. The present work deals with issues related to implementation of the Complex program aimed at reducing emissions, highlights the sanitary-epidemiologic situation related to air contamination in settlements, and describes activities aimed at optimizing a laboratory network used for monitoring over ambient air quality. It is essential to obtain maximum objective data on population health risks caused by ambient air contamination at the initial stage of the Federal project implementation. Our research goal was to estimate intermediate results in the Federal project implementation taking into account preliminary analysis of sanitary epidemiologic welfare in Omsk related to ambient air contamination. Our research object was ambient air quality in Omsk, potential health risks and population health parameters associated with ambient air contamination over 2009–2019. The examination was performed in accordance with a procedure for health risk assessment under exposure to chemicals (R 2.1.10.1920-04), as well as procedures, approaches, and algorithms stipulated in the normative and methodological documents MR 2.1.6.0158-19, MR 2.1.6.0156-19, with use of geoinformation technologies and statistical procedures. The research allowed substantiating a program for monitoring over ambient air quality taking into account all the existing monitoring systems basing on spatial distribution of total hazard quotient (S) in Omsk residential area and preliminary data obtained via aggregated calculations of ground contaminants concentrations. We suggested a list of control parameters and a procedure for their estimation in order to provide objective and timely monitoring over implementation of the Complex program aimed at reducing emissions into ambient air in Omsk. Implementation of the Complex program was estimated as per results of certain activities accomplished within it in 2019.

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Kriga, A. S., S. V. Nikitin Nikitin, E. L. Ovchinnikova, et al. "On implementation of «Clean air» federal project in Omsk." Health Risk Analysis, no. 4 (December 2020): 31–45. http://dx.doi.org/10.21668/health.risk/2020.4.04.eng.

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The first two years of «Clean air» Federal project in Omsk have been completed and preliminary results have been estimated. The present work deals with issues related to implementation of the Complex program aimed at reducing emissions, highlights the sanitary-epidemiologic situation related to air contamination in settlements, and describes activities aimed at optimizing a laboratory network used for monitoring over ambient air quality. It is essential to obtain maximum objective data on population health risks caused by ambient air contamination at the initial stage of the Federal project implementation. Our research goal was to estimate intermediate results in the Federal project implementation taking into account preliminary analysis of sanitary epidemiologic welfare in Omsk related to ambient air contamination. Our research object was ambient air quality in Omsk, potential health risks and population health parameters associated with ambient air contamination over 2009–2019. The examination was performed in accordance with a procedure for health risk assessment under exposure to chemicals (R 2.1.10.1920-04), as well as procedures, approaches, and algorithms stipulated in the normative and methodological documents MR 2.1.6.0158-19, MR 2.1.6.0156-19, with use of geoinformation technologies and statistical procedures. The research allowed substantiating a program for monitoring over ambient air quality taking into account all the existing monitoring systems basing on spatial distribution of total hazard quotient (S) in Omsk residential area and preliminary data obtained via aggregated calculations of ground contaminants concentrations. We suggested a list of control parameters and a procedure for their estimation in order to provide objective and timely monitoring over implementation of the Complex program aimed at reducing emissions into ambient air in Omsk. Implementation of the Complex program was estimated as per results of certain activities accomplished within it in 2019.

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Petruš, Michal, Peter Michalik, Luboslav Straka, et al. "The evaluation of the production of the shaped part using the workshop programming method on the two-spindle multi-axis CTX alpha 500 lathe." Open Engineering 9, no. 1 (2019): 660–67. http://dx.doi.org/10.1515/eng-2019-0075.

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AbstractThe article deals with the description of the production of a shaped part composed of an outer pyramid and cylindrical surface, of inner cylindrical surfaces of different diameters and of an inner tongue groove. It describes the proposed tools and tool holders resulting from the technological process. In order to meet the required tolerances and shape deviations for the given component, the CTX alpha 500 two-spindle multi-axis CNC lathe was chosen for its production. Its control system enables the workshop method of programming and simulation of individual operations in automatic mode or in block-by-block mode. The design of the selected CNC lathe enables the machining of rotary parts in one clamping, which is ensured by the right and left spindle with chucks. The surface quality of the pyramidal surface and the internal diameter of D18H8 was measured using a Hommel Etamic W5 roughness gauge. The measured roughness values for the hole were: D = 18H8, Rz = 3.007 μm, Ra = 0.729 μm and for the pyramidal surface: Rz = 1.527 μm and Ra = 0.329 μm.

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Ulanova, T. S., T. V. Nurislamova, N. A. Popova, and O. A. Mal'tseva. "Working out a procedure for determining potentially hazardous volatile organic compounds (trichloroethylene and tetrachloroethylene) in ambient air." Health Risk Analysis, no. 4 (December 2020): 113–20. http://dx.doi.org/10.21668/health.risk/2020.4.13.eng.

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The article dwells on results obtained via experimental research on working out a gas chromatography procedure for determining trichloroethylene and tetrachloroethylene in ambient air. Experiments were performed on substances which had low limits of detection with gas-liquid chromatography with electron capture detection (GLC/ECD) when examined substances were absorbed from ambient air on Tenax TA sorbent. Optimal gas chromatography parameters were established with a hardware-software complex based on «Crystal-5000» gas chromatographer and use of a column from IDBPX-VOL series, 60m⋅0.32mm⋅1.8µm, under the following temperatures: column, 50–230о С; evaporator, 250о С; detector, 250о С. The developed capillary gas chromatography procedure allows determining trichloroethylene in concentrations ranging from 0.000146 to 0.00146 mg/m3, and tetrachloroethylene, from 0.000081 to 0.00081 mg/m3 with inaccuracy not exceeding 25.0%. We performed metrological assessment of the procedure and it allowed determining quality of analysis results for trichloroethylene and tetrachloroethylene; they were as follows: precision, 21.97% and 14.3%: repeatability, 4.22% and 3.38%; reproducibility, 5.66% and 4.9%. Limit of detection (LOD) for trichloroethylene and tetrachloroethylene was =0.0000038 mg/dm3 and =0.00000083 mg/dm3 accordingly. Limit of quantitative determination (LOQ) was =0.000013 mg/m3 for trichloroethylene, and = 0.0000028 mg/m3 for tetrachloroethylene. The developed procedure allowed detecting contents of the examined substances in ambient air near a construction site and a dry-cleaner’s, trichloroethylene in a range from 0.00001 mg/m3 to 0.0009 mg/m3, tetrachloroethylene, from 0.000011 mg/m3 to 0.00039 mg/m3. This unified high-sensitive and selective procedure is recommended for systemic control over potentially hazardous volatile organic compounds in ambient air as it allows providing objective and reliable hygienic assessment of chemical safety and quality of the environment and health risk assessment.

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Ulanova, T. S., T. V. Nurislamova, N. A. Popova, and O. A. Mal'tseva. "Working out a procedure for determining potentially hazardous volatile organic compounds (trichloroethylene and tetrachloroethylene) in ambient air." Health Risk Analysis, no. 4 (December 2020): 113–20. http://dx.doi.org/10.21668/health.risk/2020.4.13.eng.

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The article dwells on results obtained via experimental research on working out a gas chromatography procedure for determining trichloroethylene and tetrachloroethylene in ambient air. Experiments were performed on substances which had low limits of detection with gas-liquid chromatography with electron capture detection (GLC/ECD) when examined substances were absorbed from ambient air on Tenax TA sorbent. Optimal gas chromatography parameters were established with a hardware-software complex based on «Crystal-5000» gas chromatographer and use of a column from IDBPX-VOL series, 60m⋅0.32mm⋅1.8µm, under the following temperatures: column, 50–230о С; evaporator, 250о С; detector, 250о С. The developed capillary gas chromatography procedure allows determining trichloroethylene in concentrations ranging from 0.000146 to 0.00146 mg/m3, and tetrachloroethylene, from 0.000081 to 0.00081 mg/m3 with inaccuracy not exceeding 25.0%. We performed metrological assessment of the procedure and it allowed determining quality of analysis results for trichloroethylene and tetrachloroethylene; they were as follows: precision, 21.97% and 14.3%: repeatability, 4.22% and 3.38%; reproducibility, 5.66% and 4.9%. Limit of detection (LOD) for trichloroethylene and tetrachloroethylene was =0.0000038 mg/dm3 and =0.00000083 mg/dm3 accordingly. Limit of quantitative determination (LOQ) was =0.000013 mg/m3 for trichloroethylene, and = 0.0000028 mg/m3 for tetrachloroethylene. The developed procedure allowed detecting contents of the examined substances in ambient air near a construction site and a dry-cleaner’s, trichloroethylene in a range from 0.00001 mg/m3 to 0.0009 mg/m3, tetrachloroethylene, from 0.000011 mg/m3 to 0.00039 mg/m3. This unified high-sensitive and selective procedure is recommended for systemic control over potentially hazardous volatile organic compounds in ambient air as it allows providing objective and reliable hygienic assessment of chemical safety and quality of the environment and health risk assessment.

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Deryabkina, L. A., B. I. Marchenko, N. K. Plugotarenko, and A. I. Yukhno. "Assessing efficiency of pre-ammonization aimed at reducing carcinogenic risks caused by trihalomethanes in drinking water." Health Risk Analysis, no. 3 (September 2020): 70–77. http://dx.doi.org/10.21668/health.risk/2020.3.08.eng.

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In most Russian regions there is still a pressing issue related to providing population with high quality and safe drinking water. Up to now, chlorination has been the primary technique applied to disinfect drinking water as it is highly efficient, reliable, and relatively cheap. However, when chlorine is used to disinfect natural water that contains organic pollutants, it results in risks of by-products occurrence. These products are trihalomethanes, epigenetic carcinogenesis promoters that cause elevated carcinogenic risks under oral, inhalation, and subcutaneous exposure. Our research goal was to hygienically assess efficiency of pre-ammonization applied in water treatment procedures in order to prevent occurrence of carcinogenic organic chlorine compounds during chlorination and to minimize carcinogenic risks. We determined trihalomethanes and residual chlorine contents in model samples of natural water taken from a surface water source after chlorination with different doses of chlorine. We examined 52 pair parallel samples that had undergone pre-ammonization with ammonia sulfate and control ones. Trihalomethanes concentrations were determined in model water samples with gas-liquid chromatography. Basing on the results obtained via experiments on laboratory chlorination of river water, we determined quantitative characteristics and built regression models showing dependence between concentrations of organic chlorine compounds occurring due to chlorination (chloroform, dichlorobrommethane, dibromchloromethane) and chlorine doses and preammonization parameters. It was established that pre-ammonization was the most efficient in terms of preventing trihalomethanes occurrence under such disinfection modes when contents of residual active chlorine didn’t exceed recommended levels (0.8–1.2 mg/L). Basic ways to minimize carcinogenic risks caused by trihalomethanes are systemic control over their contents in drinking water during social and hygienic monitoring procedures; preliminary ammonization of water taken from surface water sources; prevention of unjustified hyper-chlorination; preliminary deep purification of initial water; disinfection with ultrasound radiation instead of preliminary chlorination; etc.

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Karayağmurlu, Ali, Muhammet Emin Naldan, Öztun Temelli, and Murat Coşkun. "The evaluation of depression, anxiety and quality of life in children living with parental cancer: A case-control study (eng)." Journal of Clinical Psychiatry 24, no. 1 (2021): 5–14. http://dx.doi.org/10.5505/kpd.2020.87699.

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Cysewska-Sobusiak, Anna Romana. "Control of stenting procedures with optical imaging." Photonics Letters of Poland 12, no. 2 (2020): 31. http://dx.doi.org/10.4302/plp.v12i2.988.

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The article presents how application of optical methods of imaging may aid control of more and more widespread stenting procedure. Modern gastro-videoendoscopy is especially useful in such therapeutic effects made in particular parts of the alimentary tract. The shown selected examples relate to results of real studies made in cooperation with medical specialists Full Text: PDF ReferencesA. Cysewska-Sobusiak, "Examples of acquisition and application of biooptical signals", Phot. Lett. Poland 11, 2 (2019). CrossRef P. Listewnik and A. Mazikowski, "Automatic system for optical parameters measurements of biological tissues", Phot. Lett. Poland 10, 3 (2018). CrossRef J-S. Park, S. Jeong, and D. H. Lee, "Recent Advances in Gastrointestinal Stent Development", Clin. Endosc. 48, 3 (2015). CrossRef B.S. Dhillon, "Medical device reliability and associated areas" (Boca Raton, CRC Press LLC 2000). CrossRef J.F. Rey, R. Lambert, and The ESGE Quality Assurance Committee, "ESGE Recommendations for Quality Control in Gastrointestinal Endoscopy: Guidelines for Image Documentation in Upper and Lower GI Endoscopy", Endoscopy 33 (2001). CrossRef W.M. Saltzman, "Biomedical engineering. Bridging medicine and technology" (Cambridge University Press 2009). CrossRef F.A. Duck, "Physical properties of tissue: a comprehensive reference book" (San Diego, Academia Press 1990). CrossRef A. Cysewska-Sobusiak, "One-dimensional representation of light-tissue interaction for application in noninvasive oximetry", Opt. Eng. 36, 4 (1997). CrossRef A. Cysewska-Sobusiak, P. Skrzywanek, and A. Sowier, "Utilization of Miniprobes in Modern Endoscopic Ultrasonography", IEEE Sensors Journal 6, 5 (2006). CrossRef T. Mahmood, M.A. Scaffidi, R Khan, and S.Ch. Grover, "Virtual reality simulation in endoscopy training: Current evidence and future directions", World Journal of Gastroenterol. 24, 48 (2018). CrossRef https://medical.olympusamerica.com DirectLink

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Klinger, Volkhard. "SMoBAICS." International Journal of Privacy and Health Information Management 5, no. 2 (2017): 34–57. http://dx.doi.org/10.4018/ijphim.2017070103.

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Simulation and modelling are powerful methods in computer aided therapy, rehabilitation monitoring, identification and control. The smart modular biosignal acquisition and identification system (SMoBAICS) provides methods and techniques to acquire electromyogram (EMG)- and electroneurogram (ENG)-based data for the evaluation and identification of biosignals. In this paper the author focuses on the development, integration and verification of platform technologies which support this entire data processing. Simulation and verification approaches are integrated to evaluate causal relationships between physiological and bioinformatical processes. Based on this we are stepping up of efforts to develop substitute methods and computer-aided simulation models with the objective of reducing animal testing. This work continues the former work about system identification and biosignal acquisition and verification systems presented in (Bohlmann et al., 2010), (Klinger and Klauke, 2013), (Klinger, 2014). This paper focuses on the next generation of an embedded data acquisition and identification system and its flexible platform architecture. Different application scenarios are shown to illustrate the system in different application fields. The author presents results of the enhanced closed-loop verification approach and of the signal quality using the Cuff-electrode-based ENG-data acquisition system.

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Popova, A. Yu, S. V. Kuzmin, N. V. Zaitseva, and I. V. May. "Priorities in scientific support provided for hygienic activities accomplished by a sanitary and epidemiologic service: how to face known threats and new chnallanges." Health Risk Analysis, no. 1 (March 2021): 4–14. http://dx.doi.org/10.21668/health.risk/2021.1.01.eng.

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Scientific support provided for activities accomplished by the Federal Service for Surveillance over Consumer Rights Protection and Human Well-being is considered to be a most significant tool for raising productivity and efficiency of the system functioning. A concept on scientific support provided for Rospotrebnadzor’s organs and authorities in 2021–2025 focuses on creating an integral, coordinated, efficient, stable, and adaptive system of scientific support provided for activities aimed at securing sanitary-epidemiologic welfare of the population. A peculiar feature of this concept for 2021–2025 is an emphasis on science-intensive analysis technologies and predictions based on digital informational and analytical support provided for strategic and operative decisions on minimizing risks and damage to population health. Another emphasis is on significance of fundamental hygienic research. The concept sets the tasks to develop scientific grounds for cellular and sub-cellular technologies applied to diagnose health disorders under exposure to occupational and environmental factors as well as lifestyle-related ones. It is necessary to create a personified medical and preventive platform for preserving life and health; the platform should be based on risk assessing, monitoring and prediction, mathematical modeling of processes occurring in a body, and the latest data on physiology and toxicology. The Concept also covers issues related to developing innovative technologies for preventing and rehabilitating diseases associated with environmental and occupational factors basing on science-intensive cross-disciplinary studies and the most up-to-date hardware and software complexes. More enhanced hygienic and epidemiologic research is an extremely important and promising vector in scientific development. The Concept outlines the necessity to promptly make new technologies available to experts who are responsible for control, surveillance, inspections, licensing, and other activities within Rospotrebnadzor system. The Concept on scientific support is being implemented via «Scientific substantiation for the national system for providing sanitary-epidemiologic welfare, health risk management, and raising life quality of the RF population», a specialized scientific-research program for 2021–2025. More than 80% resources allocated within the specialized program will be assigned for solving the most vital tasks and preventing future threats. Finding solutions to major strategic tasks set by the Concept and the specialized scientific program will allow achieving greater contributions made by organs and authorities of the sanitary-epidemiologic service into scientific, technological, and socioeconomic development of the country including a contribution into developing and implementing competitive scientific-technical products.

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Avdeew, Yvan, Victor Bergé-Laval, Virginie Le Rolle, et al. "Assessment of the Use of Multi-Channel Organic Electrodes to Record ENG on Small Nerves: Application to Phrenic Nerve Burst Detection." Sensors 21, no. 16 (2021): 5594. http://dx.doi.org/10.3390/s21165594.

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Effective closed-loop neuromodulation relies on the acquisition of appropriate physiological control variables and the delivery of an appropriate stimulation signal. In particular, electroneurogram (ENG) data acquired from a set of electrodes applied at the surface of the nerve may be used as a potential control variable in this field. Improved electrode technologies and data processing methods are clearly needed in this context. In this work, we evaluated a new electrode technology based on multichannel organic electrodes (OE) and applied a signal processing chain in order to detect respiratory-related bursts from the phrenic nerve. Phrenic ENG (pENG) were acquired from nine Long Evans rats in situ preparations. For each preparation, a 16-channel OE was applied around the phrenic nerve’s surface and a suction electrode was applied to the cut end of the same nerve. The former electrode provided input multivariate pENG signals while the latter electrode provided the gold standard for data analysis. Correlations between OE signals and that from the gold standard were estimated. Signal to noise ratio (SNR) and ROC curves were built to quantify phrenic bursts detection performance. Correlation score showed the ability of the OE to record high-quality pENG. Our methods allowed good phrenic bursts detection. However, we failed to demonstrate a spatial selectivity from the multiple pENG recorded with our OE matrix. Altogether, our results suggest that highly flexible and biocompatible multi-channel electrode may represent an interesting alternative to metallic cuff electrodes to perform nerve bursts detection and/or closed-loop neuromodulation.

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Van de Ven, James D., and Arthur G. Erdman. "Laser Transmission Welding of Thermoplastics—Part II: Experimental Model Validation." Journal of Manufacturing Science and Engineering 129, no. 5 (2007): 859–67. http://dx.doi.org/10.1115/1.2752832.

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Two laser transmission welding experiments involving polyvinyl chloride are presented that aim to validate a previously presented welding model while helping to further understand the relationship between welding parameters and weld quality. While numerous previous research papers have presented the results of laser welding experiments, there exists minimal work validating models of the welding process. The first experiment explores the interaction of laser power and welding velocity while the second experiment explores the influence of clamping pressure. Using the weld width as the primary model output, the agreement between the welding experiments and the model have an average error of 5.6%. This finding strongly supports the validity of the model presented in Part I of this two paper set (Van de Ven and Erdman, 2007, ASME J. Manuf. Sci. Eng., 129, pp. 849–858). Additional information was gained regarding the operating window for laser transmission welding and the thermal decomposition of polyvinyl chloride. Clamping pressure was found to provide a small, but not statistically significant, influence on the visual appearance, weld width, and weld strength.

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Semenov, A. P., V. V. Semchenko, and I. Yu Khromov. "Monitoring the Technical Condition of AC Electric Locomotives using Traction Energy Consumption Rates." World of Transport and Transportation 18, no. 5 (2021): 62–89. http://dx.doi.org/10.30932/1992-3252-2020-18-62-89.

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Currently, the methods of monitoring the technical condition of locomotives using data of on-board microprocessor-based control systems are widely used. This monitoring of Russia has become an operating technology of the locomotive maintenance and repair system.The main problem of monitoring is the limited set of sensors in locomotive circuits. Increased number of sensors leads to a decrease in reliability and to an increase in the cost of a locomotive and of its life cycle, while allowing to achieve better quality of diagnostic information.Besides, it is advisable to have integrated indicators of the technical condition of a locomotive. The article presents a computer software product for analysing the technical condition of a locomotive based on dynamic data on consumption of traction active power and generation of reactive power. The software was developed by using algorithmic language Visual BASIC for Applications, embedded in MS Excel, using probabilistic and statistical methods of analysis.The method for diagnosing the technical condition of a locomotive within the monitoring system is based on a comparison of dynamics of consumption of active and generation of reactive power by two sections of the same locomotive according to the principle of functional benchmarking. For monitoring the technical condition of locomotives, the term «pre-failure» is suggested, which is defined as the operable condition of a locomotive while there are internal hidden defects or damage. Pre-failure manifests itself in power consumption. To analyse the technical condition of AC electric locomotives in terms of electricity consumption, the initial data must have a high degree of unimodality, which is determined by uniformity of operating conditions.The resulting data obtained following the analysis of the technical condition of a locomotive based on the dynamic data on consumption of tractive active energy and generation of reactive power can be used to determine a defect that causes a change in consumption of electricity at the moment when the locomotive enters technical maintenance and repair depot. *Information about the authors: Semenov, Alexander P. – Ph.D. (Eng), General Director of JSC Research Institute of Technology, Control and Diagnostics of Railway Transport, Omsk, Russia, corp@niitkd.ru. Semchenko, Victor V. – Ph.D. (Eng), General Director of JSC Railroad Centre of Technology Implementation of Krasnoyarsk Railway, Krasnoyarsk, Russia, office@dcv.ru. Khromov, Igor Yu. – Business Analyst of LLC2050-Integrator, Moscow, Russia, KhromovIYu@yandex.ru. Article received 13.05.2020, accepted 23.10.2020. For the original Russian text of the article please see p. 62.

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Mezzomo, Wellington, Marcia Xavier Peiter, Adroaldo Dias Robaina, Jardel Henrique Kirchner, Rogerio Ricalde Torres, and Bruna Dalcin Pimenta. "PRODUÇÃO FORRAGEIRA E EFICIÊNCIA DE UTILIZAÇÃO DA ÁGUA DO CAPIM SUDÃO SUBMETIDO A DIFERENTES LÂMINAS DE IRRIGAÇÃO1." IRRIGA 25, no. 1 (2020): 143–59. http://dx.doi.org/10.15809/irriga.2020v25n1p143-159.

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PRODUÇÃO FORRAGEIRA E EFICIÊNCIA DE UTILIZAÇÃO DA ÁGUA DO CAPIM SUDÃO SUBMETIDO A DIFERENTES LÂMINAS DE IRRIGAÇÃO1  WELLINGTON MEZZOMO2; MARCIA XAVIER PEITER3; ADROALDO DIAS ROBAINA4; JARDEL HENRIQUE KIRCHNER5; ROGÉRIO RICALDE TORRES6 e BRUNA DALCIN PIMENTA7  1 Trabalho retirado da tese intitulada: “Viabilidade técnica e econômica da produção de forragem do capim sudão irrigado por aspersão convencional”, do autor Wellington Mezzomo2  2 Eng. Agrônomo, Mestre, Doutorando no Programa de Pós-Graduação em Engenharia Agrícola, UFSM, Avenida Roraima, nº 1000, bairro Camobi, Santa Maria, RS, Brasil, CEP: 97195-000, wellingtonmezzomo@gmail.com. 3 Eng. Agrônoma, Doutora, Professora Associada do Departamento de Engenharia Rural, UFSM, Avenida Roraima, nº 1000, bairro Camobi, Santa Maria, RS, Brasil, CEP: 97195-000, mpeiter@gmail.com. 4 Eng. Agrônomo, Doutor, Professor Titular do Departamento de Engenharia Rural, UFSM, Avenida Roraima, nº 1000, bairro Camobi, Santa Maria, RS, Brasil, CEP: 97195-000, diasrobaina@gmail.com. 5 Eng. Agrônomo, Doutor, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Rua Nelsi Ribas Fritsch, nº 1111, bairro Esperança, Ibirubá, RS, Brasil, CEP: 98200-000, jardel.kirchner@ibiruba.ifrs.edu.br 6 Eng. Agrônomo, Doutor, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Rua Eng. João Viterbo de Oliveira, nº 3061, Zona Rural, Vacaria, RS, Brasil, CEP: 95219-899, rogerio.torres@vacaria.ifrs.edu.br. 7 Eng. Agrônoma, Mestre, Professora do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Rua Nelsi Ribas Fritsch, nº 1111, bairro Esperança, Ibirubá, RS, Brasil, CEP: 98200-000, bruna.pimenta@ibiruba.ifrs.edu.br.   1 RESUMO  As pastagens cultivadas são a forma mais prática e viável economicamente para alimentação bovina, entretanto, na região sul do Brasil no período de primavera-verão a qualidade e a disponibilidade forrageira decaem em razão da irregularidade pluvial, fazendo-se necessária a utilização da irrigação. O capim Sudão (Sorghum sudanense (Piper) Stapf), cultivar BRS Estribo vem se destacando em relação as demais gramíneas de verão, porém o suprimento hídrico ótimo ainda é desconhecido, pois as pesquisas divergem sobre os resultados. O objetivo, foi avaliar a produtividade do capim Sudão sob diferentes lâminas e determinar a eficiência na utilização da água em dois anos de cultivo (2015/2016 e 2016/2017). Os experimentos foram conduzidos na Universidade Federal de Santa Maria, baixo o delineamento experimental em blocos ao acaso com cinco lâminas de água, 25, 50, 75, 100 e 125% da evapotranspiração de referência (ETo) e tratamento testemunha sem irrigação, todos com quatro repetições. Houve diferença estatisticamente significativa para os distintos tratamentos, sendo determinado a máxima eficiência técnica para produção de massa seca e eficiência de utilização da água, no Ano 1 as lâminas de água foram 103,1% e 73,6% da ETo respectivamente e no Ano 2 foram as lâminas com 120,8% e 95,6% da ETo.  Keywords: evapotranspiração de referência, massa seca, BRS Estribo.      MEZZOMO, W.; PEITER, M. X.; ROBAINA, A. D.; KIRCHNER, J. H.; TORRES, R. R.; PIMENTA, B. D. FORAGE PRODUCTION AND EFFICIENCY IN THE UTILIZATION OF WATER IN SUDAN GRASS SUBMITTED TO DIFFERENT IRRIGATION DEPTHS   2 ABSTRACT  Cultivated pastures are the most practical and economically viable way to feed cattle, however, in southern Brazil, during spring-summer, forage quality and availability decline due to rainfall irregularity, irrigation is required. Sudan grass (Sorghum sudanense (Piper) Stapf), cultivar BRS Estribo has been outstanding in relation to the other summer grasses, however the optimal water supply is still unknown, as research diverges about the results. The objective was to evaluate the yield of Sudan grass under different depths and to determine the efficiency in the utilization of water, in two years of cultivation (2015/2016 and 2016/2017). The experiments were conducted at the Federal University of Santa Maria, under a randomized block design with five water depths, 25, 50, 75, 100 and 125% of reference evapotranspiration and control treatment without irrigation, all with four repetitions. There was a statistically significant difference for the different treatments, being determined the maximum efficiency technique for dry mass production and efficiency in the utilization of water, in Year 1 the water depths were 103.1% and 73.6% of ETo respectively, and in Year 2 depths were 120.8% and 95.6% of ETo.  Keywords: reference evapotranspiration, dry mass, BRS Estribo.

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Mezzomo, Wellington, Marcia Xavier Peiter, Adroaldo Dias Robaina, Rogério Ricalde Torres, Jardel Henrique Kirchner, and Anderson Crestani Pereira. "CARACTERÍSTICAS BIOMÉTRICAS DO CAPIM SUDÃO (BRS ESTRIBO) SOB DIFERENTES LÂMINAS SUPLEMENTARES DE IRRIGAÇÃO." IRRIGA 26, no. 1 (2021): 165–85. http://dx.doi.org/10.15809/irriga.2021v26n1p165-185.

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CARACTERÍSTICAS BIOMÉTRICAS DO CAPIM SUDÃO (BRS ESTRIBO) SOB DIFERENTES LÂMINAS SUPLEMENTARES DE IRRIGAÇÃO WELLINGTON MEZZOMO1; MARCIA XAVIER PEITER2; ADROALDO DIAS ROBAINA3; ROGÉRIO RICALDE TORRES4; JARDEL HENRIQUE KIRCHNER5 E ANDERSON CRESTANI PEREIRA6 1 Eng. Agrônomo, Doutor, Professor Associado da Universidade Tecnológica UTEC, Rua Maciel Esquina Luis Morquio, s/n, Durazno, Uruguai, CEP: 97000, wellington.mezzomo@utec.edu.uy 2 Eng. Agrônoma, Doutora, Professora Associada do Departamento de Engenharia Rural, UFSM, Avenida Roraima, nº 1000, bairro Camobi, Santa Maria, RS, Brasil, CEP: 97195-000, mpeiter@gmail.com 3 Eng. Agrônomo, Doutor, Professor Titular do Departamento de Engenharia Rural, UFSM, Avenida Roraima, nº 1000, bairro Camobi, Santa Maria, RS, Brasil, CEP: 97195-000, diasrobaina@gmail.com 4 Eng. Agrônomo, Doutor, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Rua Eng. João Viterbo de Oliveira, nº 3061, Zona Rural, Vacaria, RS, Brasil, CEP: 95219-899, rogerio.torres@vacaria.ifrs.edu.br 5 Eng. Agrônomo, Doutor, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Rua Nelsi Ribas Fritsch, nº 1111, bairro Esperança, Ibirubá, RS, Brasil, CEP: 98200-000, jardel.kirchner@ibiruba.ifrs.edu.br 6 Eng. Agrônomo, Mestre, Doutorando em Agronomia no Departamento de Fitotecnia da UFSM, Avenida Roraima, nº 1000, bairro Camobi, Santa Maria, RS, Brasil, CEP: 97195-000, acrestanipereira@gmail.com 1 RESUMO O uso de pastagens é a forma mais economicamente viável para alimentação bovina. São fatores biométricos determinantes para o conhecimento da qualidade e determinação da produtividade das forrageiras usadas como pastagens: altura de plantas, diâmetro e altura dos colmos e relação folha/colmo. Neste trabalho, objetivou-se avaliar as características biométricas do capim Sudão (Sorghum sudanense (Piper) Stapf), cultivar BRS Estribo, em três cortes de uniformização, sob diferentes lâminas de irrigação. O experimento foi conduzido no município de Santa Maria-RS, Brasil, em dois anos agrícolas: 2015/2016 e 2016/2017. O delineamento experimental utilizado foi blocos casualizados, composto por quatro blocos, com cinco tratamentos por bloco, mais a testemunha. Os tratamentos consistiram na aplicação de lâminas de irrigação suplementar equivalentes a: 25, 50, 75, 100 e 125% da evapotranspiração de referência (ETo). Foram avaliados: altura de plantas, diâmetro e altura dos colmos e a relação folha/colmo. Observou-se significância estatística para todos os fatores analisados, exceto para a relação folha/colmo. À medida que as lâminas de irrigação aumentaram até o tratamento com 100% da ETo, observou-se incrementos na altura das plantas e diâmetro e altura dos colmos, portanto, para potencializar o desenvolvimento desses fatores, recomenda-se que a demanda hídrica do capim Sudão seja integralmente suprida. Palavras chave: Sorghum sudanense (Piper) Stapf., altura de plantas, diâmetro de colmos, relação folha/colmo. MEZZOMO, W.; PEITER, M. X.; ROBAINA, A. D.; TORRES, R. R.; KIRCHNER, J. H.; PEREIRA, A. C. BIOMETRIC CHARACTERISTICS OF SUDAN GRASS (BRS ESTRIBO) UNDER DIFFERENT SUPPLEMENTAL IRRIGATION DEPTHS 2 ABSTRACT The use of pastures is the most economically viable way to feed beef/dairy cattle. The biometric plant factors: plant height, diameter and height of stems and leaf/stem ratio, are determining factors for quality assessment and determination of the productivity of forages used as pastures. In this work, the objective was to evaluate the biometric characteristics of Sudan grass (Sorghum sudanense (Piper) Stapf), cultivar BRS Estribo, in three uniformity cuts under different irrigation depths. The experiment was conducted in the municipality of Santa Maria-RS, Brazil, in two agricultural years: 2015/2016 and 2016/2017. The experimental design used was randomized blocks, composed of four blocks, with five treatments per block, plus the control treatment. The treatments consisted of the application of supplemental irrigation depths equivalent to: 25, 50, 75, 100, and 125% of the reference evapotranspiration (ETo). The following factors were evaluated: plant height, diameter and height of stems and leaf/stem ratio. Statistical significance was observed for all factors analyzed, except for the leaf/stem ratio. As the supplemental irrigation depths increased until treatment with 100% of ETo, increments in plant height and diameter and height of stems were observed; therefore, to enhance the development of these factors, it is recommended that the water requirements of Sudan grass be fully met. Keywords: Sorghum sudanense (Piper) Stapf., plant height, stem diameter, leaf/stem ratio.

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McCaslin, Devin L., Gary P. Jacobson, Sarah L. Grantham, Erin G. Piker, and Susha Verghese. "The Influence of Unilateral Saccular Impairment on Functional Balance Performance and Self-Report Dizziness." Journal of the American Academy of Audiology 22, no. 08 (2011): 542–49. http://dx.doi.org/10.3766/jaaa.22.8.6.

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Background: Postural stability in humans is largely maintained by vestibular, visual, and somatosensory inputs to the central nervous system. Recent clinical advances in the assessment of otolith function (e.g., cervical and ocular vestibular evoked myogenic potentials [cVEMPs and oVEMPs], subjective visual vertical [SVV] during eccentric rotation) have enabled investigators to identify patients with unilateral otolith impairments. This research has suggested that patients with unilateral otolith impairments perform worse than normal healthy controls on measures of postural stability. It is not yet known if patients with unilateral impairments of the saccule and/or inferior vestibular nerve (i.e., unilaterally abnormal cVEMP) perform differently on measures of postural stability than patients with unilateral impairments of the horizontal SCC (semicircular canal) and/or superior vestibular nerve (i.e., unilateral caloric weakness). Further, it is not known what relationship exists, if any, between otolith system impairment and self-report dizziness handicap. Purpose: The purpose of this investigation was to determine the extent to which saccular impairments (defined by a unilaterally absent cVEMP) and impairments of the horizontal semicircular canal (as measured by the results of caloric testing) affect vestibulospinal function as measured through the Sensory Organization Test (SOT) of the computerized dynamic posturography (CDP). A secondary objective of this investigation was to measure the effects, if any, that saccular impairment has on a modality-specific measure of health-related quality of life. Research Design: A retrospective cohort study. Subjects were assigned to one of four groups based on results from balance function testing: Group 1 (abnormal cVEMP response only), Group 2 (abnormal caloric response only), Group 3 (abnormal cVEMP and abnormal caloric response), and Group 4 (normal control group). Study Sample: Subjects were 92 adult patients: 62 were seen for balance function testing due to complaints of dizziness, vertigo, or unsteadiness, and 30 served as controls. Intervention: All subjects underwent videonystagmography or electronystagmography (VNG/ENG), vestibular evoked myogenic potentials (VEMPs), self-report measures of self-perceived dizziness disability/handicap (Dizziness Handicap Inventory), and tests of postural control (Neurocom Equitest). Data Collection and Analysis: Subjects were categorized into one of four groups based on balance function test results. All variables were subjected to a multifactor analysis of variance (ANOVA). The Dizziness Handicap Inventory (DHI) total scores and equilibrium scores served as the dependent variables. Results: Results showed that patients with abnormal unilateral saccular or inferior vestibular nerve function (i.e., abnormal cVEMP) demonstrated significantly impaired postural control when compared to normal participants. However, this group demonstrated significantly better postural stability when compared to the group with abnormal caloric responses alone and the group with abnormal caloric responses and abnormal cVEMP results. Patients with an abnormal cVEMP did not differ significantly on the DHI compared to the other two impaired groups. Conclusions: We interpret these findings as evidence that a significantly asymmetrical cVEMP in isolation negatively impacts performance on measures of postural control compared to normal subjects but not compared to patients with significant caloric weaknesses. However, patients with a unilaterally abnormal cVEMP do not differ from patients with significant caloric weaknesses in regard to self-perceived dizziness handicap.

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Valeriano, Taynara Tuany Borges, Márcio José de Santana, Lázaro José Macedo Machado, and Ana Flávia Oliveira. "ALFACE AMERICANA CULTIVADA EM AMBIENTE PROTEGIDO SUBMETIDA A DOSES DE POTÁSSIO E LÂMINAS DE IRRIGAÇÃO." IRRIGA 21, no. 3 (2018): 620. http://dx.doi.org/10.15809/irriga.2016v21n3p620-630.

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ALFACE AMERICANA CULTIVADA EM AMBIENTE PROTEGIDO SUBMETIDA A DOSES DE POTÁSSIO E LÂMINAS DE IRRIGAÇÃO TAYNARA TUANY BORGES VALERIANO1;MÁRCIO JOSÉ DE SANTANA2;ANA FLÁVIA OLIVEIRA3 E LÁZARO JOSÉ MACEDO MACHADO4 1 Eng. Agrônoma, Departamento de Ciências Exatas, Universidade Estadual Paulista/ Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal – SP, CEP São Paulo - CEP 14884-900 – Brasil. taynarabvaleriano@gmail.com 2 Eng. Agrônomo, Prof. Dr. em Irrigação e Drenagem, Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro, Uberaba, Uberaba, CEP 38064-300, Uberaba – MG, Brasil. marciosantana@iftm.edu.br3 Eng. Agrônoma, Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro, Uberaba – MG, Brasil. an.fl.ol@hotmail.com4 Eng. Agrônomo, Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro, Uberaba – MG, Brasil. lazimmacedo@hotmail.com 1 RESUMO O cultivo de alface em ambiente protegido tem crescido bastante nos últimos anos devido ao maior controle dos fatores ambientais, aliado ao emprego de práticas de irrigação e adubação pode contribuir com o aumento da produtividade e melhoria na qualidade do produto. A partir do exposto, um experimento foi conduzido em casa de vegetação no Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro/IFTM, no município de Uberaba-MG, com o objetivo de avaliar o efeito da aplicação de doses de potássio e lâminas de irrigação na produção de alface americana. O delineamento experimental foi em blocos casualizados, em esquema fatorial 4x4 com três repetições, totalizando 48 unidades experimentais. Foram estudadas quatro doses de potássio (30, 60, 90 e 120 kg ha-1) e quatro lâminas de irrigação (60, 80, 100 e 120% da evapotranspiração da cultura - ETc). Aos 66 dias após o transplantio, determinou-se o diâmetro do caule, a circunferência da cabeça, o número de folhas externas e internas, o peso total da planta e o peso comercial da cabeça. Foi determinada ainda a eficiência do uso da água (EUA) com base na relação peso comercial da cabeça/lâmina de irrigação total aplicada. Observou-se efeito significativo apenas entre as lâminas de irrigação para todas as variáveis estudadas, com resposta crescente até valores próximos a 100% da ETc. A maior EUA de 1,8 g mm-1 foi obtida com a aplicação de 60% da ETc. Palavras-chave: Lactuca sativa L., nutrição, manejo de irrigação. VALERIANO, T. T. B.; SANTANA, M. J.; OLIVEIRA, A. F.; MACHADO, L. J. M. POTASSIUM AND IRRIGATION LEVELS IN THE PRODUCTION OF LETTUCE GROWN IN GREENHOUSES2 ABSTRACTLettuce grown in greenhouses has increased considerably in recent years due to superior control of environmental factors, coupled with the use of irrigation and fertilization practices that contribute to increased yield and improved product quality. Therefore, an experiment was conducted in a greenhouse at the Federal Institute of Education, Science and Technology of the Mineiro Triangle / IFTM, in Uberaba-MG, in order to evaluate the effect of application of potassium doses and irrigation water in the production of lettuce. The experimental design was randomized blocks in a 4x4 factorial design with three replications, totaling 48 experimental units. We studied four potassium doses (30, 60, 90 and 120 kg ha-1) and four irrigation levels (60, 80, 100 and 120% of crop evapotranspiration - ETc). 66 days after transplanting, the stem diameter, head circumference, the number of internal and external leaves, the total weight of the plant and the commercial weight of the head were determined. Water use efficiency (WUE) was also determined based on the commercial weight ratio of the head / Total irrigation depth applied. There was significant effect, among irrigation water levels, for all variables studied, with growing response to values close to 100% of ETC. The superior USA 1.8 g mm-1 was obtained by applying 60% of the ETC.Keywords: Lactuca sativa L., mineral nutrition, irrigation management.

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Zhai, Li-ting, and Song Xiang. "mRNA quality control at the 5’ end." Journal of Zhejiang University SCIENCE B 15, no. 5 (2014): 438–43. http://dx.doi.org/10.1631/jzus.b1400070.

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Narushin, V. G. "MATHEMATICAL ALGORITHM FOR QUALITY CONTROL IN EGG PRODUCTION." Acta Horticulturae, no. 476 (November 1998): 345–48. http://dx.doi.org/10.17660/actahortic.1998.476.40.

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Eklund, Bart, John Roadifer, Noel Wong, and Michael Forrest. "NOA Air-Quality Lessons Learned During Calaveras Dam Replacement Project." Environmental and Engineering Geoscience 26, no. 1 (2020): 35–38. http://dx.doi.org/10.2113/eeg-2280.

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ABSTRACT The Calaveras Dam Replacement Project (CDRP) pioneered technical approaches for addressing community exposure to naturally occurring asbestos (NOA) via the inhalation pathway. Over the course of the CDRP, approaches were developed for key issues, including determining the NOA particles of interest, defining the toxicity limits to apply to various types of NOA particles, establishing dust control, and creating appropriate feedback loops for using laboratory data. Specific issues of interest included whether to count only structures above a certain length and the inhalation unit risk value to use for amphiboles. The knowledge gained on the CDRP can and is being used to optimize NOA evaluation and control at other, similar projects.

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Kang, Jun. "Research on the Rate Control Scheme of Networked Control Systems." Advanced Materials Research 225-226 (April 2011): 228–33. http://dx.doi.org/10.4028/www.scientific.net/amr.225-226.228.

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The Quality of performance of Networked control system (NCS) depends on the quality of network service. To guarantee the limit of quality of network service of NCS, the mechanism of end-to-end rate control is applied to NCS. An novel end-to-end rate control scheme of guaranteeing minimal rate for each control loop of NCS is proposed. This scheme can guarantee to meet the requirements of quality of network service of NCS and show TCP friendly. Finally, the simulation results show that the proposed algorithm is effective.

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Padoveze, L. R., M. Rubessa, C. E. Ambrosio, and M. B. Wheeler. "186 The effects of different concentrations of MgSO4 in osteogenic differentiation." Reproduction, Fertility and Development 31, no. 1 (2019): 217. http://dx.doi.org/10.1071/rdv31n1ab186.

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Tissue engineering offers a viable alternative to bone grafts in repairing large bone defects. Magnesium-based materials are biocompatible in vivo, and it is possible to determine the degradation period according to the necessities (Farraro et al. 2014 J. Biomech. 47, 1979-1986). Magnesium (Mg) is part of many physiological processes, and it promotes the osteogenesis of mesenchymal stem cells (Díaz-Tocados et al. 2017 Sci. Rep. 7, 7839.). Moreover, Mg up-regulates important genes associated with the osteogenic differentiation (Yoshizawa et al. 2014 Acta Biomater. 10, 2834-2842). The aim of this study was to evaluate the effect of different Mg concentrations in the osteogenic medium on the number of nodules of bone. Swine adipose stem cells (ASC) were previously isolated as described (Monaco et al. 2009 Open Tissue Eng. Regen. Med. J. 2, 20-33). In this in vitro study, ASC were cultured during 4 weeks in osteogenic medium with addition of 0.1, 0.2, 1, 2, 10, or 20mM MgSO4. The medium was changed twice a week. Alizarin Red and Von Kossa staining were performed to evaluate the formation of nodules by mineralization of extracellular matrix (ECM), evidenced by dark red nodules and calcium deposit. The experiment was replicated 3 times in triplicate. Data were analysed using the generalized linear model (GLM) procedure, and Bonferroni’s post hoc test was used to perform statistical multiple comparison (SPSS Inc./IBM Corp., Chicago, IL, USA). The results showed enhanced nodule formation with 2mM Mg in the osteogenic medium (35.6v. 15.3, respectively for 2mM and Control). This result confirms the ability of magnesium to act in bone formation. There was no statistical difference among the different groups when we evaluated the Von Kossa staining results, indicating that the quality of the new formations was comparable to that of the control group even in an elevated nodule formation. In conclusion, a higher concentration of magnesium can improve nodule formation into osteogenic differentiation in vitro; the 2mM concentration showed the best nodule formation compared with the other groups. These results showed the value of magnesium in bone physiology.

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Halamish, Vered, Morris Goldsmith, and Larry L. Jacoby. "Source-constrained recall: Front-end and back-end control of retrieval quality." Journal of Experimental Psychology: Learning, Memory, and Cognition 38, no. 1 (2012): 1–15. http://dx.doi.org/10.1037/a0025053.

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Srivastava, Rakesh K., and Joseph A. Brown. "Assessment of egg quality in Atlantic salmon, Salmo salar, treated with testosterone: biochemical composition." Canadian Journal of Zoology 71, no. 1 (1993): 109–15. http://dx.doi.org/10.1139/z93-016.

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In the present study, eggs were collected from testosterone-treated Atlantic salmon (Salmo salar) and control (sham implanted) fish, and egg-quality parameters were compared. Egg weight and diameter, as well as protein, lipid, carbohydrate, dry matter, and ash contents, of eggs from testosterone-treated fish were significantly less than those of eggs from controls. Intensive utilization of protein energy for metabolism during egg development and predominant utilization of lipid energy after hatching was noted. Polyamines, putrescine, spermidine, and spermine contents in eggs from control and treated fish did not differ. However, embryos and alevins from testosterone-treated fish synthesized more polyamines than did controls during development. There were no significant differences in fertilization and hatching success, or in survival to the eyed stage and first feeding. The development of embryos from treated fish was slower than that of controls, but higher growth rates and greater development of alevins from treated groups were observed after hatching.

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Çelik Güney, Melis, and Gökhan Tamer Kayaalp. "Determination of Egg Shell Quality with P Control Charts in Poultry." Turkish Journal of Agriculture - Food Science and Technology 4, no. 7 (2016): 588. http://dx.doi.org/10.24925/turjaf.v4i7.588-591.771.

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Broken or cracked eggs are important factor in determining the quality of the egg shell. Manufacturers are experience great losses because broken or cracked eggs aren’t evaluated. The manufacturers need control charts throughout the production to determine whether process is under control. In this study, broken and cracked eggs which are taken Cukurova University, Faculty of Agriculture, Department of Animal Science, Poultry Businesses during 52 weeks are determined. P control charts of the data’s are taken in poultry business during 52 weeks is drawn due to determining whether there is under the control. Three methods were used for drawing control charts. In the end of this study, it has been determined to be not under control of the process.

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Vieira, Bruno Serpa, Silvana Alves Pedrozo Vitalino Barbosa, João Marcos Novais Tavares, et al. "Phytase and protease supplementation for laying hens in peak egg production." Semina: Ciências Agrárias 37, no. 6 (2016): 4285. http://dx.doi.org/10.5433/1679-0359.2016v37n6p4285.

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The effects of the combination of enzymes in commercial laying hens need to be more explored in literature. To determine if the type of protease affects performance, egg quality, nutrient intake, and morphometry of intestinal mucosa of laying hens in peak egg production and fed with phytase, 780 25-weeks Hy-Line W36 hens were assigned to a completely randomized design composed of five treatments/diets (one positive control, two negative controls, and negative controls plus protease A or B), with 12 replicates of 13 birds each. There was no effect of treatments (P > 0.05) on egg production, egg mass and feed conversion, even though the nutritional restriction imposed by the negative controls reduced egg weight (P = 0.02), albumen height (P < 0.01), and Haugh unit (P < 0.01). Although inclusion of proteases in negative controls did not cause the calculated intake of protein and amino acids to return to the same amount consumed by positive-control hens, egg quality parameters returned to positive control standards with protease A. Intestinal mucosa responded to treatment only at jejunum, where birds fed with protease B showed greater (P < 0.01) villus height and crypt depth than those treated with protease A. These findings suggest that different proteases and phytases interact distinctly and, in consequence, induce different responses on the birds. Moreover, the behavior of egg quality parameters after protease A inclusion in the diet indicates that the nutritional contribution of the combination of this protease with phytase is greater than the contribution of protease alone.

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Rowe, Jeffrey B. "Quality Control Procedures for Underwater Inspections." Transportation Research Record: Journal of the Transportation Research Board 1933, no. 1 (2005): 9–14. http://dx.doi.org/10.1177/0361198105193300102.

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For more than 20 years, the FHWA has required that underwater inspection of bridges be performed at least every 5 years. Over that period, departments of transportation and other bridge owners have either developed in-house underwater inspection teams or hired outside consultants to perform this work. Ensuring that the inspections are conducted properly and accurately is critical. To this end, several policies and procedures can be implemented as quality control measures in an underwater inspection program. Selecting a properly trained inspection team, ensuring proper preparation before diving operations, conducting independent inspections, and looking at deterioration trends are several ways to ensure quality in underwater inspections.

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Yildiz, G., P. Sacakli, and T. Gungor. "The effect of dietary Jerusalem artichoke (Helianthus tuberosus L.) on performance, egg quality characteristics and egg cholesterol content in laying hens." Czech Journal of Animal Science 51, No. 8 (2011): 349–54. http://dx.doi.org/10.17221/3950-cjas.

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This research was carried out to determine the effect of Jerusalem artichoke (JA) with or without 5, 10% vetch (V) supplementation on performance, egg quality characteristics and egg cholesterol content. In the study, seventy-five 25 weeks-old commercial white laying hens were randomly divided into one control and 4 treatment groups each containing 15 hens. Control group was fed basal diet without JA or V. Treatment group 1, 2, 3 and 4 were fed diets containing 5% V, 5% JA, 5% JA + 5% V and 10% JA + 10% V, respectively. The feeding period lasted 16 weeks. In the study, it was determined that dried-ground JA contained dry matter, crude protein, ether extract, crude fibre, crude ash, inulin and metabolizable energy (ME) at the level of 93.30, 10.02, 0.36, 5.64, 9.05, 15.80% and 3 060 kcal/kg, respectively. At the end of the study, live weight was lower by 4.36&ndash;10.09% in the treatment group 10% JA + 10% V compared with the other groups, but feed efficiency was improved in this group. There were statistically significant differences between the groups in egg quality characteristics (P &lt; 0.05, P &lt; 0.001). Egg production was not affected by supplementation of 5, 10% JA with or without 5, 10% V supplementation. Egg yolk cholesterol and total cholesterol content were not different in the groups (P &gt; 0.05). As a result, the addition of JA with or without V has no adverse effect on performance and egg quality in hens. &nbsp;

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Kiiskinen, Tuomo, and Hilkka Hakatie. "Effects of a short laying rest on postrest egg production and egg quality." Agricultural and Food Science 2, no. 5 (1993): 437–45. http://dx.doi.org/10.23986/afsci.72660.

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Two factorial trials, each including three commercial laying hybrids, were conducted to study the effects of a short laying rest on postrest performance of hens and on egg quality. A total of 1800 hens laying at 65% on an average (70 wks of age) were subjected to one of the following treatments: no rest (control, C) or feeding only whole-grain barley (WB) or fasting (F, Trial 1 only) until the rate oflay dropped to 0%, after which the birds were returned to the previous all-mash diet. The second laying period was six months. Egg production of the WB and F hens ceased within one week on an average and the birds were out of production for 10 days. Laying intensity during the second production period did not differ significantly between the treatments in each trial, but egg weight and daily egg mass production increased as a result of the rest treatments. The laying rest procedures reduced feed intake, improved feed efficiency and increased live weight significantly. Egg shell and albumen quality traits were significantly better in the laying rest groups than in the controls. Significant differences in performance and egg quality between the hybrids were mainly ascertained in Trial 2. The results suggest that a short laying rest is a feasible means of improving egg quality towards the end of the laying period. It can be accomplished successfully by feeding whole-grain barley.

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Schaffer, A. A., E. S. Rice, W. Cook, and R. Agarwala. "rh_tsp_map 3.0: end-to-end radiation hybrid mapping with improved speed and quality control." Bioinformatics 23, no. 9 (2007): 1156–58. http://dx.doi.org/10.1093/bioinformatics/btm077.

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Oulai, Desire, Steven Chamberland, and Samuel Pierre. "End-to-end quality of service constrained routing and admission control for MPLS networks." Journal of Communications and Networks 11, no. 3 (2009): 297–305. http://dx.doi.org/10.1109/jcn.2009.6391334.

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Belzarena, Pablo, Paola Bermolen, Pedro Casas, and Maria Simon. "End-to-end quality of service-based admission control using the fictitious network analysis." Computer Communications 33 (November 2010): S157—S166. http://dx.doi.org/10.1016/j.comcom.2010.04.024.

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Prčić, Vjekoslav-Leonard, Damir Kalpić, and Dina Šimunić. "Improving end-to-end communication by novel methodology of route quality approximation." Automatika 59, no. 3-4 (2018): 294–301. http://dx.doi.org/10.1080/00051144.2018.1533623.

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Wang, Kun, Haiwei Li, Yue Xu, et al. "MFEprimer-3.0: quality control for PCR primers." Nucleic Acids Research 47, W1 (2019): W610—W613. http://dx.doi.org/10.1093/nar/gkz351.

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Abstract Quality control (QC) for lab-designed primers is crucial for the success of a polymerase chain reaction (PCR). Here, we present MFEprimer-3.0, a functional primer quality control program for checking non-specific amplicons, dimers, hairpins and other parameters. The new features of the current version include: (i) more sensitive binding site search using the updated k-mer algorithm that allows mismatches within the k-mer, except for the first base at the 3′ end. The binding sites of each primer with a stable 3′ end are listed in the output; (ii) new algorithms for rapidly identifying self-dimers, cross-dimers and hairpins; (iii) the command-line version, which has an added option of JSON output to enhance the versatility of MFEprimer by acting as a QC step in the ‘primer design → quality control → redesign’ pipeline; (iv) a function for checking whether the binding sites contain single nucleotide polymorphisms (SNPs), which will affect the consistency of binding efficiency among different samples. In summary, MFEprimer-3.0 is updated with the well-tested PCR primer QC program and it can be integrated into various PCR primer design applications as a QC module. The MFEprimer-3.0 server is freely accessible without any login requirement at: https://mfeprimer3.igenetech.com/ and https://www.mfeprimer.com/. The source code for the command-line version is available upon request.

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Jiao, Xinfu, Song Xiang, ChanSeok Oh, Charles E. Martin, Liang Tong, and Megerditch Kiledjian. "Identification of a quality-control mechanism for mRNA 5′-end capping." Nature 467, no. 7315 (2010): 608–11. http://dx.doi.org/10.1038/nature09338.

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Cheng-Tung Ku, King-Chu Hung, Tsung-Ching Wu, and Huan-Sheng Wang. "Wavelet-Based ECG Data Compression System With Linear Quality Control Scheme." IEEE Transactions on Biomedical Engineering 57, no. 6 (2010): 1399–409. http://dx.doi.org/10.1109/tbme.2009.2037605.

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Hernando-Ramiro, Carlos, Manuel Blanco-Velasco, Lisandro Lovisolo, and Fernando Cruz-Roldán. "Consistent quality control in ECG compression by means of direct metrics." Physiological Measurement 36, no. 9 (2015): 1981–94. http://dx.doi.org/10.1088/0967-3334/36/9/1981.

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Vila, Gaël, Christelle Godin, Sylvie Charbonnier, and Aurélie Campagne. "Real-Time Quality Index to Control Data Loss in Real-Life Cardiac Monitoring Applications." Sensors 21, no. 16 (2021): 5357. http://dx.doi.org/10.3390/s21165357.

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Wearable cardiac sensors pave the way for advanced cardiac monitoring applications based on heart rate variability (HRV). In real-life settings, heart rate (HR) measurements are subject to motion artifacts that may lead to frequent data loss (missing samples in the HR signal), especially for commercial devices based on photoplethysmography (PPG). The current study had two main goals: (i) to provide a white-box quality index that estimates the amount of missing samples in any piece of HR signal; and (ii) to quantify the impact of data loss on feature extraction in a PPG-based HR signal. This was done by comparing real-life recordings from commercial sensors featuring both PPG (Empatica E4) and ECG (Zephyr BioHarness 3). After an outlier rejection process, our quality index was used to isolate portions of ECG-based HR signals that could be used as benchmark, to validate the output of Empatica E4 at the signal level and at the feature level. Our results showed high accuracy in estimating the mean HR (median error: 3.2%), poor accuracy for short-term HRV features (e.g., median error: 64% for high-frequency power), and mild accuracy for longer-term HRV features (e.g., median error: 25% for low-frequency power). These levels of errors could be reduced by using our quality index to identify time windows with few or no data loss (median errors: 0.0%, 27%, and 6.4% respectively, when no sample was missing). This quality index should be useful in future work to extract reliable cardiac features in real-life measurements, or to conduct a field validation study on wearable cardiac sensors.

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Journal articles on the topic 'Quality control. eng'

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