scholarly journals Some Results of Experimentation with the Anthropomorphic Robotic System in Remote Control Master-Slave Mode.

2019 ◽  
pp. 106-121
Author(s):  
Vladimir Gennadievich Sorokin ◽  
Sergey Vladimirovich Kud-Sverchkov ◽  
Yuri Sergeevich Chebotarev
Keyword(s):  
Remote Control ◽  
Experimental Studies ◽  
Robotic System ◽  
System Environment ◽  
Operational Quality ◽  
Manned Space ◽  
Slave Mode

At present, the requirements for the characteristics of the “cosmonaut-anthropomorphic robotic system-environment” ergatic system, the procedure for evaluating the performance of a cosmonaut-operator when using anthropomorphic robots, proposals for the functionality of this ergatic system and the ways of its application in order to increase the operational quality of existing and future manned space complexes can be determined and substantiated only as a result of carrying out experimental studies using an anthropomorphic robotic system.

EXPERIMENTAL STUDIES OF CAR PROPERTIES ON A PHYSICAL MODEL

2019 ◽  
pp. 10-16
Author(s):  
Oleksii Timkov ◽  
Dmytro Yashchenko ◽  
Volodymyr Bosenko
Keyword(s):  
Mathematical Model ◽  
Remote Control ◽  
Physical Model ◽  
Model Experiment ◽  
Experimental Studies ◽  
Electrical Energy ◽  
Short Term ◽  
Motor Current ◽  
Memory Card ◽  
The Mathematical Model

The article deals with the development of a physical model of a car equipped with measuring, recording and remote control equipment for experimental study of car properties. A detailed description of the design of the physical model and of the electronic modules used is given, links to application libraries and the code of the first part of the program for remote control of the model are given. Atmega microcontroller on the Arduino Uno platform was used to manage the model and register the parameters. When moving the car on the memory card saved such parameters as speed, voltage on the motor, current on the motor, the angle of the steered wheel, acceleration along three coordinate axes are recorded. Use of more powerful microcontrollers will allow to expand the list of the registered parameters of movement of the car. It is possible to measure the forces acting on the elements of the car and other parameters. In the future, it is planned to develop a mathematical model of motion of the car and check its adequacy in conducting experimental studies on maneuverability on the physical model. In addition, it is possible to conduct studies of stability and consumption of electrical energy. The physical model allows to quickly change geometric dimensions and mass parameters. In the study of highway trains, this approach will allow to investigate the various layout schemes of highway trains in the short term. It is possible to make two-axle road trains and saddle towed trains, three-way hitched trains of different layout. The results obtained will allow us to improve not only the mathematical model, but also the experimental physical model, and move on to further study the properties of hybrid road trains with an active trailer link. This approach allows to reduce material and time costs when researching the properties of cars and road trains. Keywords: car, physical model, experiment, road trains, sensor, remote control, maneuverability, stability.

The system of indicators of the quality of the carbon-carbon composite materials and technologies of their production

2018 ◽  
pp. 127-132
Author(s):  
T. N. Antipova ◽  
D. S. Shiroyan
Keyword(s):  
Composite Material ◽  
Low Cost ◽  
Experimental Studies ◽  
Carbon Matrix ◽  
Carbon Composite ◽  
Optimal Number ◽  
Laboratory Equipment ◽  
Carbon Composite Material ◽  
Carbon Composite Materials

The system of indicators of quality of carbon-carbon composite material and technological operations of its production is proved in the work. As a result of the experimental studies, with respect to the existing laboratory equipment, the optimal number of cycles of saturation of the reinforcing frame with a carbon matrix is determined. It was found that to obtain a carbon-carbon composite material with a low cost and the required quality indicators, it is necessary to introduce additional parameters of the pitch melt at the impregnation stage.

Influence of different factors on the growth rate of young animals and the quality of beef

2021 ◽  
pp. 28-39
Author(s):  
V. N. Pristupa ◽  
D. S. Torosyan
Keyword(s):  
Experimental Studies ◽  
Live Weight ◽  
Federal District ◽  
Steppe Zone ◽  
Industrial Complex ◽  
Black And White ◽  
Dry Steppe ◽  
Intensive Rearing ◽  
Meat Productivity

The purpose of the work was to study and identify the main factors aff ecting the quantity and quality of beef produced and sold in the Southern Federal district. A comparative assessment of the growth, development, formation of meat productivity and quality of beef of young animals of beef, dual and dairy breeds with stall-pasture technology and intensive rearing in the industrial complex. Experimental studies have been carried out in farms in the Rostov region. The object of research was cows with calves of Kalmyk, Hereford, Aberdeen-Angus, Russian komolaya, Kazakh White-headed breeds, as well as young animals of the same breeds, in addition, Black-and-White and Swiss breeds. Removable live weight in Hereford steers at 18 months of age was 658,0 kg, and Aberdeen-Angus – 655,2 kg. Domestic steers of Kalmyk were 41–44 kg lower in live weight than their herdmates of two imported breeds. However, with intensive rearing at 18 months of age, steers of Kalmyk breed had a removable live weight of more than 613,7 kg and a carcass weight of 326 kg. The yield of hot carcass was 55,4 %, and the slaughter yield was 58,89 %, which was only 1–2 % lower than the world’s leading beef breeds. It has been found when analyzing the results of boning the half-carcasses of experimental steers that the biggest weight of half-carcasses and the content of muscle and fat tissue in them in absolute terms were in Hereford steers. Steers of Kalmyk breed took the third place in terms of weight of large-sized semi–fi nished products and signifi cantly lost to Aberdeen-Angus herdmates by 7,3 kg or 6,5 %, and Hereford steers by 9,2 kg or 8,3 %. The results obtained prove the expediency of using stallpasture technology in the dry-steppe zone of the Southern Federal district when rearing young animals for beef up to 350–400 kg live weight at 15 months of age and its subsequent intensive rearing under industrial technology, in order to obtain the live weight of more than 570 kg and produce cost-eff ective beef.

Method of experimental evaluation of the efficiency coefficient of vibration protection of the rope-rod coupling "MAMSAR+A" of the diesel generator set DGA-8.83

2021 ◽  
pp. 88-95
Author(s):  
М.А. Минасян ◽  
А.М. Минасян ◽  
Ц. Цзэн
Keyword(s):  
Experimental Evaluation ◽  
Vibration Isolation ◽  
Experimental Studies ◽  
Original Method ◽  
Efficiency Coefficient ◽  
Diesel Generator ◽  
Vibration Protection ◽  
Rigid Connection ◽  
Two Stages

Объектом исследования является опытный образец запатентованной канатностержневой муфты (КСМ) «MAMSAR+А» в качестве привода дизель-генераторного агрегата ДГА-8,83 мощностью 9,56 кВт при частоте вращения 1500 мин-1 с дизелем 2Ч 8,5/11 и генератором «ГК-5,6». Целью исследования является экспериментальная оценка коэффициента эффективности вибрационной защиты КСМ. Поставленная цель достигается разработкой и реализацией оригинальной методики экспериментальной оценки коэффициента эффективности КСМ с анализом и выводами результатов экспериментальных исследований. Экспериментальные исследования проводятся в два этапа. Первый этап – с упругим соединением КСМ, второй этап – с жестким соединением. Оригинальность методики экспериментальной оценки коэффициента эффективности вибрационной защиты КСМ главным образом заключается в том, что между двумя этапами экспериментальных исследований КСМ не демонтируется. Следовательно, качество центровки не нарушается. Усредненный коэффициент эффективности виброизоляции КСМ составляет от 3 до 8 дБ. The object of this research is a prototype of the patented wire rope coupling (KSM) "MAMSAR+A" as a drive for a diesel-generator unit DGA-8.83 with a power of 9.56 kW at a speed of 1500 min-1 with a 2CH 8.5/11 diesel engine and a generator "KG-5.6". The aim of the research is to experimentally evaluate the efficiency coefficient of vibration protection of the KSM. This goal is achieved by developing and implementing an original method for experimental evaluation the efficiency coefficient of the KSM with analysis and conclusions of the results of experimental studies. Experimental studies are conducted in two stages. The first stage - with an elastic connection of the coupling, the second stage - with a rigid connection. The originality of the method of experimental evaluation of the efficiency coefficient of vibration protection of the KSM mainly lies in the fact that the KSM is not dismantled between the two stages of experimental research. Therefore, the quality of alignment is not violated. The average coefficient of vibration isolation efficiency of the KSM is from 3 to 8 dB.

CONSUMER PROPERTIES OF PASTA WITH POWDER FROM MARIGOLD INFLORESCENCES (TAGETES L.)

2021 ◽  
Vol 40 (4) ◽  
pp. 102-112
Author(s):  
SHAPOVALOVA Nataliia ◽  
VEZHLIVTSEVA Svitlana ◽  
ANTIUSHKO Dmytro
Keyword(s):  
Raw Materials ◽  
Experimental Studies ◽  
The Body ◽  
Biologically Active Substances ◽  
Biologically Active ◽  
Organoleptic Properties ◽  
Biological Value ◽  
Plant Raw Materials ◽  
Active Substances

Background. The deficiency of essential nutrients in the human body is the root cause of reduced efficiency, general resistance of the body to various diseases. That is an urgent problem in the context of the spread of coronavirus infection. In this regard, the search for opportunities to meet the needs of the population in food products that contain biologically active substances (BAS) through the use of high-value and at the same time available plant raw materials is extremely important. Marigolds attract special attention among such raw materials. The aim of the work is to study the chemical composition and evaluate the consumer properties of Tagetes L. varieties, zoned in the Kiev region, to prove the possibility of increasing the biological value of pasta by adding to their recipe powder from marigold inflorescences. Materials and methods. The object of research is pasta of B group (noodles). Inflorescences of marigolds of different varieties gathered during the flowering period in July-September 2019–2020 in the territory of Vasylkiv and Obukhiv districts of Kyiv region, Ukraine were used as enriching plant raw materials. The quality of finished pasta was assessed by organoleptic and physicochemical indexes (moisture content and titratable acidity). The content of mineral elements in the fine powder of marigold inflorescences was determined on the EXHERT-3L device, the quantitative composition and BAS identification – by spectrophotometric analysis on the device Specord-200 Analytic Jena UV-vis. The integrated quality index of pasta products was calculated taking into account the importance factors of individual indexes. Results. Comparing the obtained results, we can state that all the studied varieties – Gold Kopfen, Orange Flame, Hawaii, Equinox are characterized by high biological value, regardless of the area of collection. As a result of calculated and experimental studies it was determined that the addition of 7 % of the supplement does not provide the required supply of vitamins and minerals. Replacing the flour in the recipe by 20 % significantly improves the mineral composition, but deteriorates the taste and aromatic properties of pasta. The most optimal and rational amount of added additive is 15 %, as it improves the organoleptic properties of pasta and enriches their BAS. Conclusion. The usage of non-traditional vegetable raw materials, in particular powder from marigold inflorescences, which is rich in biologically active substances, allows not only to expand the range, improve the quality of finished products, but also increase the biological value of the product. The optimal amount of additive –powder from marigold inflorescences, was defined. It is 15 % by weight of flour in the production of noodles. This concentration allows not only to improve the organoleptic properties, but also to increase the content of biologically active substances – vitamins, micro- and macronutrients. The usage of non-traditional natural raw materials (powder from marigold inflorescences) allows to abandon artificial colorsand give the finished pasta a pleasant colorand aroma.

Effect of Abrasive Tools in Galvanomechanical Treatment on the Roughness of the Deposited Chromium Layer

2018 ◽  
Vol 284 ◽  
pp. 1178-1183 ◽  
Author(s):  
D.A. Zherebtcov ◽  
Oksana N. Gruba ◽  
K.R. Smolyakova
Keyword(s):  
Experimental Studies ◽  
The Body ◽  
Abrasive Tool ◽  
Chromium Layer ◽  
Pressing Force ◽  
Hard Chromium ◽  
Chromium Plating ◽  
Cylindrical Parts ◽  
Abrasive Tools

The article deals with the method of obtaining a hard chromium coating on details of the "body of rotation" type with the use of an abrasive tool. The influence of the composition and hardness of the elastic abrasive tool on the results of galvanomechanical chromium plating of rotating cylindrical parts has been studied. Binder compositions for an abrasive tool used to improve the roughness of the deposited chromium layer have been developed. A series of experimental studies has been carried out with chromium plating of steel cylindrical parts with simultaneous abrasive processing. Beforehand, an abrasive tool with previously developed binder formulations was manufactured. The obtained results of the influence of the characteristics of the abrasive tool and its pressing force on the chromium-plated part on the quality of the precipitated chromium made it possible to determine the optimum modes for obtaining a coating of the required thickness. Also, a suitable abrasive tool has been chosen to obtain a coating of proper quality.

scholarly journals Impact of eating disorders on paid or unpaid work participation and performance: a systematic review and meta-analysis protocol

2022 ◽  
Vol 10 (1) ◽  
Author(s):  
Fatima Safi ◽  
Anna M. Aniserowicz ◽  
Heather Colquhoun ◽  
Jill Stier ◽  
Behdin Nowrouzi-Kia
Keyword(s):  
Systematic Review ◽  
Eating Disorders ◽  
Meta Analysis ◽  
Experimental Studies ◽  
Work Participation ◽  
Unpaid Work ◽  
Cochrane Library ◽  
And Performance ◽  
The Impact

Abstract Background Eating disorders (ED) can reduce quality of life by limiting participation and performance in social and occupational roles, including paid or unpaid work. The association between ED pathologies and work participation and performance must be well understood to strengthen vocational rehabilitation programmes and prevent occupational disruptions in the ED population. The aims of this study are: (1) to examine the degree of association between ED pathologies and work participation and performance in 15-year-olds and older; (2) to highlight the specific ED symptoms that are most correlated with changes in work performance and participation; (3) to compile the most common metrics and assessments used to measure work participation and performance with ED. Methods Medline, Embase, CINAHL, Web of Science, PsycINFO, and Cochrane Library will be searched for observational and experimental studies that meet the following criteria: (1) a clinical sample of typical or atypical ED; (2) paid or unpaid employment or training; (3) an association between ED pathologies and work participation or performance. Unpublished data will also be examined. Title and abstract, and full-text screening will be conducted in duplicate. Risk of bias and quality of evidence assessments will be completed. A random-effect meta-analysis will be performed. Discussion This synthesis can clarify knowledge and gaps around the impact of ED on work functioning, thereby allowing better evaluation, improvements and development of current workplace assessments, interventions, and policies. Trial registration The registration number for this systematic review on PROSPERO is CRD42021255055.

scholarly journals Histamine receptors as drug target: Current and future therapeutics.

2019 ◽  
Vol 2 (1) ◽  
pp. 31-35 ◽  
Author(s):  
Atteqa Jawad ◽  
Richa Kaushal ◽  
Muhammad Sohail ◽  
Amna Yaqoob
Keyword(s):  
Drug Target ◽  
Inflammatory Responses ◽  
Experimental Studies ◽  
Gastric Ulcers ◽  
Central Regulation ◽  
Inflammatory Reactions ◽  
Central Effects ◽  
Memory Modulation ◽  
Gastric Secretions

Histamine is a neurotransmitter responsible for central regulation of inflammatory reactions. Initial studies were done by Sir Henry Dale in 1993. Histamine acts on its four type of receptors. H1 and H2 are well-established with pharmacological status. H1 receptors are mainly linked with inflammatory responses and developed to mitigate the inflammatory symptoms. While H2 antagonists are established with their role in decreasing basal gastric secretions by decreasing the cyclic adenylyl mono phosphate (cAMP), thus used as therapy line for gastric ulcers. H3 being located centrally imparts its central effects in cognitive functions that are pain, sleep, and memory modulation of neurotransmitters release including, dopamine, acetylcholine, noradrenalin and serotonin. H4 is discovered recently during cloning of H3 and found on immune related cells as, mast cells, T cells and dendrites. Experimental studies are helping in development of more pharmacologically worth drugs that can increase the quality of life.

scholarly journals Dynamic positioning system design for “blue lady”. simulation tests

2012 ◽  
Vol 19 (Special) ◽  
pp. 57-65 ◽  
Author(s):  
Mirosław Tomera
Keyword(s):  
Dynamic Positioning ◽  
Positioning System ◽  
System Operation ◽  
Training Centre ◽  
Dynamic Positioning System ◽  
Operational Quality ◽  
The Mathematical Model ◽  
And Training ◽  
Ship Handling

ABSTRACT The dynamical positioning system is a complex control consisting of a number of components, including: filters, observers, controllers, and propeller allocation systems. The design and preliminary analysis of operational quality of system operation are usually done based on numerical simulations performed with the aid of the mathematical model of the ship. The article presents a concept of the dynamic positioning system applied to steering the training ship Blue Lady used for training captains in the ship handling research and training centre owned by the Foundation for Safety of Navigation and Environment Protection in Ilawa/Kamionka. The simulation tests performed in the numerical environment of Matlab/Simulink have proved the usability of the designed system for steering a ship at low speed.

scholarly journals METHODS FOR IMPROVING THE ADHESION PROPERTIES OF BITUMENS TO MINERAL MATERIALS

2020 ◽  
pp. 29-35
Author(s):  
Н. А. Страхова ◽  
П. С. Цамаева ◽  
А. А. Эльмурзаев
Keyword(s):  
Atmospheric Oxygen ◽  
Experimental Studies ◽  
Effect Of Temperature ◽  
Volatile Components ◽  
Processing Plant ◽  
Adhesion Properties ◽  
Gas Phases ◽  
Gas Processing ◽  
Petroleum Bitumen

Статья посвящена анализу и изучению различных способов получения нефтяных битумов и улучшения адгезионных свойств в различных минеральных материалах. На примере Астраханского газоперерабатывающего завода показана эффективность добавления присадок - азот-, серосодержащих веществ, элементной серы и др. для улучшения адгезионных свойств битумов к минеральным материалам. Проведен анализ воздействия перепада температур в летнее и зимнее время на вяжущие свойства битумов. Рассмотрен способ предварительной отгонки летучих компонентов из нефтей, что приводит к уменьшению содержания парафинонафтеновых углеводородов и улучшению качества получаемых битумов. В статье также приведены результаты экспериментальных исследований влияния окисления кислородом воздуха, повышения температуры процесса на пластичность битумов. Эффективность окисления битумов зависит от величины поверхности контакта между жидкой и газовой фазой. Ускорение процесса окисления достигается в 6-7 раз при хорошем перемешивании реагирующих фаз. The article also presents the results of experimental studies of the effect of oxidation with atmospheric oxygen, an increase in the process temperature on the plasticity of bitumen. The efficiency of bitumen oxidation depends on the size of the contact surface between the liquid and gas phases. Acceleration of the oxidation process is achieved 6-7 times with good mixing of the reacting phases.The article is devoted to the analysis and study of various methods of obtaining petroleum bitumen and improving the adhesion properties in various mineral materials. Using the example of the Astrakhan gas processing plant, the effectiveness of the addition of additives - nitrogen-, sulfur-containing substances, elemental sulfur, etc. - to improve the adhesion properties of bitumen to mineral materials is shown. The analysis of the effect of temperature differences in summer and winter on the binding properties of bitumen is carried out. A method for preliminary stripping of volatile components from oils is considered, which leads to a decrease in the content of paraffin-naphthenic hydrocarbons and an improvement in the quality of the obtained bitumen.

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