OPTYMALIZACJA ALOKACJI ZASOBÓW, CZASU EKSPOZYCJI I PRĘDKOŚCI OBROTOWEJ JAJ INKUBACYJNYCH

Recently, the laser technology of influencing biological objects in biology, medicine, and veterinary medicine has become widespread in order to activate certain biochemical and physiological processes in the organism. Any influence of electromagnetic radiation (in particular optical emission) requires the exact adherence to the recommended illumination dose to obtain a positive effect on the biological object. The article presents the results of a theoretical study concerning provision of uniform illumination of the egg’s surface, taking into account the location of the laser radiation source and rotating time of the egg.Ostatnio technologia laserowego oddziaływania na obiekty biologiczne w biologii, medycynie i weterynarii stała się powszechna w celu aktywacji pewnych procesów biochemicznych i fizjologicznych w organizmie. Każdy wpływ promieniowania elektromagnetycznego (w szczególności emisji optycznej) wymaga dokładnego przestrzegania zalecanej dawki oświetlenia w celu uzyskania pozytywnego wpływu na obiekt biologiczny. W artykule przedstawiono wyniki badań teoretycznych dotyczących zapewnienia równomiernego oświetlenia powierzchni jaja, biorąc pod uwagę lokalizację źródła promieniowania laserowego i czas obrotu jaja

Дослідження динамічних процесів в системі керування гідропривода стрічкових конвеєрів із змінними вантажопотоками

The dynamic processes in the hydraulic drive control system of the conveyor with parallel hydraulic motors were studied using a mathematical model, constructed on the basis of physical phenomena occurring during the variable load acting on the hydraulic system.The obtained results allow justifying the settings of the conveyor hydraulic drive control system, which provide continuous operation of the hydraulic drive system under short-term or long-term overloads and switching on and off the additional hydraulic motor in the given regimes depending on the moment of useful resistance on the drive conveyor drum.The analysis of theoretical graphs showed that the shut-off-and-regulating element of the control unit provides the desired mode of the system with a delay in the friction clutch engagement after switching on the additional hydraulic motor for its acceleration in the idle mode, thereby the executive body effectively overcomes the short-term and long-term overloads of the drive system.The influence of the specific volume of the additional hydraulic motor, relationships of the sealing areas of the shut-off element, plunger mass and damping coefficient of the control system, as well as the mode of the load changes on the control system transients was determined. The values of the specific volume of the additional hydraulic motor, relationships between the sealing areas of the shut-off element affect the stability of the sensor transients. To avoid a vacuum cavity in the additional hydraulic motor during the friction clutch disengagement, it is needed to install a check valve between the pressure and discharge lines. The mass change or damping of the plunger by connecting the parallel check valve and throttle provide vibration damping during the clutch disengagement. To prevent the adjustment overpressure in the sensor, it is needed to install the safety-relief valve in the hydraulic system, which limits the pressure in the pressure line. The efficiency of using a direct-acting valve with parametric control as a sensor in the control device, which allows regulating the closing pressure by the selection of the valve geometric characteristics independently of the mode of the load changes was proved.The research results can be used for hydraulic drives of the machines of various technological purposes that operate under variable loads.Исследованы динамические процессы в системе управления гидропривода конвейера с параллельно установленными гидромоторами с помощью математической модели, построенной с учетом физических явлений, происходящих во время работы гидросистемы при переменной нагрузке. Определены параметры системы управления, обеспечивающие непрерывную работу конвейера за счет включения и выключения дополнительного гидромотора в условиях действия перегрузок.Досліджено динамічні процеси в системі керування гідропривода конвеєра з паралельно встановленими гідромоторами за допомогою математичної моделі, побудованої з урахуванням фізичних явищ, що відбуваються під час роботи гідросистеми за змінного навантаження. Визначено параметри системи керування, що забезпечують безупинну роботу конвеєра за рахунок вмикання і вимикання додаткового гідромотора в умовах дії перевантажень.

Authentication of electronics components for cyber-physical systems

One of the main directions of cyber-physical systems safety ensuring is the creation and implementation of technologies for providing the electronics components a resistance to various types of external influences. The relevance of this problem is the increase of a rate of counterfeit products in electronics as an international trend. This determines a need to authenticate the products intended for responsible applications. In addition to the issue of counterfeit, the electronics components authentication is necessary for a reliable and informative assessment of their resistance to the impacts from external factors. One of the main tasks of the methodology for assessing the resistance is to establish an effective optimal balance between the reliability of the test results and the procedure laboriousness. The difficulties of this optimization are related mainly to the number of destroyed samples, the volume of collected information, ensuring of a counterfeit identification. Hereby we present an effective authentication procedure combining the "destructive" and "non-destructive" types of checks with the counterfeit identification, sample heterogeneity, and suspicious items. Improvement of the sampling procedure for testing is presented as well. The experimental results of authentication are discussed

Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia

BACKGROUND Patients with elevated triglyceride levels are at increased risk for ischemic events. Icosapent ethyl, a highly purified eicosapentaenoic acid ethyl ester, lowers triglyceride levels, but data are needed to determine its effects on ischemic events. METHODS We performed a multicenter, randomized, double-blind, placebo-controlled trial involving patients with established cardiovascular disease or with diabetes and other risk factors, who had been receiving statin therapy and who had a fasting triglyceride level of 135 to 499 mg per deciliter (1.52 to 5.63 mmol per liter) and a low-density lipoprotein cholesterol level of 41 to 100 mg per deciliter (1.06 to 2.59 mmol per liter). The patients were randomly assigned to receive 2 g of icosapent ethyl twice daily (total daily dose, 4 g) or placebo. The primary end point was a composite of cardiovascular death, nonfatal myocardial infarction, nonfatal stroke, coronary revascularization, or unstable angina. The key secondary end point was a composite of cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke. RESULTS A total of 8179 patients were enrolled (70.7% for secondary prevention of cardiovascular events) and were followed for a median of 4.9 years. A primary end-point event occurred in 17.2% of the patients in the icosapent ethyl group, as compared with 22.0% of the patients in the placebo group (hazard ratio, 0.75; 95% confidence interval [CI], 0.68 to 0.83; P<0.001); the corresponding rates of the key secondary end point were 11.2% and 14.8% (hazard ratio, 0.74; 95% CI, 0.65 to 0.83; P<0.001). The rates of additional ischemic end points, as assessed according to a prespecified hierarchical schema, were significantly lower in the icosapent ethyl group than in the placebo group, including the rate of cardiovascular death (4.3% vs. 5.2%; hazard ratio, 0.80; 95% CI, 0.66 to 0.98; P=0.03). A larger percentage of patients in the icosapent ethyl group than in the placebo group were hospitalized for atrial fibrillation or flutter (3.1% vs. 2.1%, P=0.004). Serious bleeding events occurred in 2.7% of the patients in the icosapent ethyl group and in 2.1% in the placebo group (P=0.06). CONCLUSIONS Among patients with elevated triglyceride levels despite the use of statins, the risk of ischemic events, including cardiovascular death, was significantly lower among those who received 2 g of icosapent ethyl twice daily than among those who received placebo. (Funded by Amarin Pharma; REDUCE-IT ClinicalTrials.gov number, NCT01492361

ДослідженнЯ динамічниХ процесіВ В системІ керуваннЯ гідроприводА стрічковиХ конВеєріВ іЗ зміннИмИ вантажопотокамИ

Досліджено динамічні процеси в системі керування гідропривода конвеєра з паралельно встановленими гідромоторами за допомогою математичної моделі, побудованої з урахуванням фізичних явищ, що відбуваються під час роботи гідросистеми за змінного навантаження. Визначено параметри системи керування, що забезпечують безупинну роботу конвеєра за рахунок вмикання і вимикання додаткового гідромотора в умовах дії перевантажень

Optymalizacja alokacji zasobów, czasu ekspozycji i prędkości obrotowej jaj inkubacyjnych

Recently, the laser technology of influencing biological objects in biology, medicine, and veterinary medicine has become widespread in order to activate certain biochemical and physiological processes in the organism. Any influence of electromagnetic radiation (in particular optical emission) requires the exact adherence to the recommended illumination dose to obtain a positive effect on the biological object. The article presents the results of a theoretical study concerning provision of uniform illumination of the egg’s surface, taking into account the location of the laser radiation source and rotating time of the egg.Ostatnio technologia laserowego oddziaływania na obiekty biologiczne w biologii, medycynie i weterynarii stała się powszechna w celu aktywacji pewnych procesów biochemicznych i fizjologicznych w organizmie. Każdy wpływ promieniowania elektromagnetycznego (w szczególności emisji optycznej) wymaga dokładnego przestrzegania zalecanej dawki oświetlenia w celu uzyskania pozytywnego wpływu na obiekt biologiczny. W artykule przedstawiono wyniki badań teoretycznych dotyczących zapewnienia równomiernego oświetlenia powierzchni jaja, biorąc pod uwagę lokalizację źródła promieniowania laserowego i czas obrotu jaja

Algoritm de selectare a echipamentelor pentru reducerea poverii tehnogene asupra mediului înconjurător

The work is devoted to the development of an algorithm for selection dust and gas purification equipment in order to reduce the anthropogenic impact on the environment from emissions of the heat, power and chemical industries, which are sources of complex environmental pollution. The need for the research was necessitated by the inefficiency of environmental measures taken due to the huge number of devices with different designs for emissions’ purification, their non-universality and low efficiency of the purification systems. The main goal of the study was to develop a software algorithm for the reasonable choice of the optimal dust and gas purification equipment, taking into account the actual conditions of the technological environment and the characteristics of pollutants. The goal was achieved using a logical and mathematical description of the pollutant parameters, environmental conditions and process equipment parameters. The uniqueness of the developed algorithm consisted of rechecking the compliance of each equipment parameter with environmental conditions and pollutant characteristics. The most important aims were to obtain an algorithm for selection efficient equipment, taking into account its parameters and initial characteristics of pollutants and environmental conditions, the simplicity and accessibility of its implementation for a wide number of industrial facilities in the heat, power and chemical industries. The proposed algorithm, in contrast to the approaches used in practice, was characterized by the work flexibility due to the possibility of supplementing and improving the databases of pollutants and equipment.Lucrarea este dedicată elaborării unui algoritm de selectare a echipamentelor de purificare a pulberilor și gazelor pentru reducerea impactului tehnogen asupra mediului înconjurător al emisiilor din industria termoenergetică și chimică. Scopul principal al studiului este de a elabora un algoritm pentru selectarea echipamentului optim de purificare a prafului și a gazelor, luând în considerare condițiile reale ale mediului tehnologic și caracteristicile poluanților. Obiectivul stabilit este atins prin intermediul descrierii logice și matematice a considerării simultane a parametrilor poluanților, a condițiilor mediului și a parametrilor echipamentelor tehnologice. Unicitatea algoritmului elaborat constă în verificarea încrucișată a conformității fiecărui parametru al echipamentului cu condițiile mediului și caracteristicile poluanților. Cele mai importante rezultate constau în obținerea algoritmului de alegere a echipamentului eficient, ținând cont de parametrii săi și de caracteristicile inițiale ale poluanților și de condițiile mediului, simplitatea și accesibilitatea implementării sale pentru o gamă largă de obiective industriale a ramurilor termoelectrică și chimică. Semnificația rezultatelor cercetării constă în faptul că: 1) în premieră se formează o bază de date a poluanților, a condițiilor mediului tehnologic și a parametrilor echipamentelor de purificare a pulberii și gazelor în ceea ce privește parametrii energetici, termici, tehnici, structurali și sanitaro-igienici; 2) este asigurată rapiditatea de prelucrare a bazelor de date pentru selectarea optimală a echipamentelor din contul comparării consecutive a parametrilor inițiali a substanțelor poluante și a condițiilor mediului de desfășurare a procesului de purificare. Algoritmul propus, spre deosebire de abordările aplicate în practică, se distinge prin flexibilitatea de funcționare din contul posibilității prevăzute de completare și perfecționare a bazelor de date a substanțelor poluante și a echipamentelor.Работа посвящена разработке алгоритма выбора пылегазоочистного оборудования для снижения техногенного воздействия на окружающую среду от выбросов предприятий теплоэнергетики и химической отрасли, которые являются источниками комплексного загрязнения окружающей среды. Необходимость исследования обусловлена неэффективностью принимаемых природоохранных мероприятий из-за огромного количества различных конструкций аппаратов для очистки выбросов, их не универсальностью и низкой эффективностью работы систем очистки. В результате, в атмосферу поступают пылегазовые выбросы, которые в основном содержат мелкодисперсные взвешенные капли жидкости и различные по дисперсному составу взвешенные твердые частицы. Основной целью исследования является разработка алгоритма выбора оптимального пылегазоочистного оборудования с учетом реальных условий технологической среды и характеристик загрязняющих веществ. Поставленная цель достигается посредством логического и математического описания одновременного учета параметров загрязняющих веществ, условий среды и параметров технологического оборудования. Уникальность разработанного алгоритма состоит в перепроверке соответствия каждого параметра оборудования условиям среды и характеристикам загрязняющих веществ. Наиболее важные результаты состоят в получении алгоритма выбора эффективного оборудования с учетом его параметров и исходных характеристик загрязняющих веществ и условий среды, простоте и доступности ее реализации для широкого числа промышленных объектов теплоэнергетической и химической отраслей. Значимость результатов исследования состоит в том, что: 1) впервые сформировано базы данных загрязняющих веществ, условий технологической среды и параметров пылегазоочистного оборудования с учетом энергетических, тепловых, технических, конструктивных и санитарно-гигиенических параметров; 2) обеспечена быстрота обработки баз данных для оптимального выбора оборудования, за счет последовательного сопоставления исходных параметров загрязняющих веществ и условий среды проведения процесса очистки. Предложенный алгоритм, в отличии от применяемых на практике подходов, характеризуется гибкостью работы за счет предусмотренной возможности дополнения и усовершенствования баз данных загрязняющих веществ и оборудования