scholarly journals System analysis of basic of mechanics

2020 ◽  
Author(s):  
С.М. Базаров
Keyword(s):  
Continuous Time ◽  
System Analysis ◽  
The Body ◽  
Second Law ◽  
Time And Space ◽  
Instantaneous Change ◽  
Force Pulse ◽  
Short Period ◽  
Riemann Integrals ◽  
The Impact

Механика берет свое начало со статики. Основным понятием статики является понятие «сила». При нарушении равновесия возникает движение, которое определяется скоростью и ускорением в координатной системе пространство–время; скорость определяется как отношение мгновенного изменения координаты к соответствующему мгновенному изменению времени. В свою очередь изменение мгновенной скорости, т. е. ускорение, связано с воздействием силы за мгновенное время, и называется импульсом силы. Второй закон Ньютона как основной закон динамики сформулирован для воздействия на тело постоянной силы за короткий промежуток времени, т. е. импульса силы. Импульс силы вызывает изменение скорости движения тела; мерой сопротивления тела изменениям скорости является масса; произведением массы на скорость вводится понятие «количество движения» (импульс). Поэтому второй закон Ньютона определяет силу как отношение изменения количества движения к короткому времени действия импульса силы. Короткое время действия силы является частным случаем непрерывного ее действия во времени. В данном исследовании импульс силы понимается в обобщенном представлении как произведение силы на непрерывное время действия. По аналогии импульсу силы во времени вводится импульс силы в пространстве. С позиции системного анализа графиков сила–время, масса–скорость, сила–пространство, мощность время построены дифференциальные и интегральные законы динамики потенциально связного взаимодействия соответственно сила–время–масса– скорость, сила–пространство–работа, мощность–время–энергия. Анализ полных дифференциалов потенциалов приводит к представлениям функционального времени и пространства, которые сопряжено дополняют время и пространство взаимодействия. Время и пространство действия силы в исследуемых системах по аналогии с массой рассматриваются как меры сопротивления тела изменениям силы, т. е. как механические параметры, а не геометрические. Интегральные законы динамики построены в виде суперпозиции интегралов Римана для прямых функций и интегралов Стилтьеса для обратных. Интегралы Римана описывают современную динамику, а интегралы Стилтьеса ее дополнение до потенциальной. Mechanics starts with statics. The main concept of statics is the concept of force. When the equilibrium is disturbed, motion occurs, which is determined by the speed and acceleration in the space-time coordinate system; speed is defined as the ratio of an instantaneous change in the coordinate to the corresponding instantaneous change in time. In turn, the change in instantaneous speed, i.e. acceleration, is associated with the impact of a force in an instantaneous time, which is called the force pulse. The second law of Newton, as the basic law of dynamics, is formulated for the effect on the body of a constant force for a short period of time, i.e., the force impulse. The force pulse causes a change in the speed of the body; the measure of the body's resistance to changes in speed is the mass; the product of mass and speed is introduced the concept of the amount of movement (momentum). Therefore, Newton's second law defines force as the ratio of the change in the amount of motion to the short time of action of the force impulse. The short duration of the force is a special case of continuous time. In this study, the force impulse is understood in a generalized representation as the product of the force for a continuous time of action. By analogy with a force pulse in time, a force pulse in space is introduced. With the system chart analysis force-time, mass speed, force, space, power is the differential and integral laws of dynamics potentially Svyaznoy interaction, respectively, the power–time–weight–speed, power– space–work, power–time–energy. The analysis of complete potential differentials leads to representations of functional time and space that complement the interaction time and space. The time and space of the force action in the studied systems are considered by analogy with mass as measures of the body's resistance to changes in force, i. e. as mechanical parameters, rather than geometric ones. The integral laws of dynamics are constructed as a superposition of Riemann integrals for direct functions and stiltjes integrals for inverse functions. Riemann integrals describe modern dynamics, and stiltjes integrals describe its complement to the potential one.

scholarly journals Alcohol Pattern Consumption Differently Affects the Efficiency of Macrophage Reverse Cholesterol Transport in Vivo

Nutrients ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1885
Author(s):  
Daniela Greco ◽  
Simone Battista ◽  
Laura Mele ◽  
Antonio Piemontese ◽  
Bianca Papotti ◽  
...  
Keyword(s):  
Reverse Cholesterol Transport ◽  
Disease Risk ◽  
Cardiovascular Disease Risk ◽  
The Body ◽  
Cholesterol Transport ◽  
Drinking Patterns ◽  
Cardiovascular Morbidity And Mortality ◽  
Short Period ◽  
The Impact

It has been well established that moderate alcohol consumption inversely correlates with cardiovascular morbidity and mortality, whereas binge alcohol drinking increases cardiovascular disease risk. The aim of this study was to assess in vivo the impact of different drinking patterns on reverse cholesterol transport (RCT); the atheroprotective process leading to the removal of excess cholesterol from the body. RCT was measured with a standardized, radioisotope-based technique in three groups of atherosclerosis-prone apolipoprotein E knock out mice: Placebo group, receiving water, which would mimic the abstainers; moderate group, receiving 0.8 g/kg alcohol/day for 28 days, which would mimic a moderate intake; binge group, receiving 0.8 g/kg alcohol/day for 5 days/week, followed by the administration of 2.8 g/kg alcohol/day for 2 days/week, which would mimic a heavy intake in a short period. Mice in the binge drinking group displayed an increase in total cholesterol, high density lipoprotein cholesterol (HDL-c) and non-HDL-c (all p < 0.0001 vs. placebo), and a significantly reduced elimination of fecal cholesterol. The moderate consumption did not lead to any changes in circulating lipids, but slightly improved cholesterol mobilization along the RCT pathway. Overall, our data confirm the importance of considering not only the total amount, but also the different consumption patterns to define the impact of alcohol on cardiovascular risk.

scholarly journals Application of the second law of thermodynamics in assessing the effectiveness of dietary supplements

2020 ◽  
Vol 81 (4) ◽  
pp. 138-146
Author(s):  
N. S. Rodionova ◽  
A. B. Vishnyakov ◽  
E. S. Popov ◽  
E. V. Belokurova ◽  
N. A. Rodionova ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Dietary Supplements ◽  
Second Law Of Thermodynamics ◽  
The Body ◽  
Biologically Active ◽  
Qualitative Assessment ◽  
Second Law ◽  
Functional Capabilities ◽  
Oxidative Processes ◽  
The Impact

The most important area of any biophysical research is the study of the influx and conversion of energy in biological systems - bioenergy, which ensures the vital activity of the body. Analysis of the possibilities of stabilization of the human body from the standpoint of biothermodynamics is that it allows you to more fully and correctly assess the impact not only on biologically active substances, but also on human health. Analysis of the results of experimental and theoretical sources of biothermodynamics, the authors came up with the idea of positioning biologically active additives to the entropy component, which consists in the fact that drugs or surgery are required to treat a person. to any effect (reduction of chaos, therefore, a decrease in entropy). Important for understanding the thermodynamic approach to evaluating dietary supplements is that they do not increase the entropy of the system. The authors are convinced of the need to revise the paradigm for assessing biological activity (bioeffectiveness, biocorrective properties, functional capabilities) and the substances that underlie the transition from differential quantitative characteristics to an integral qualitative assessment of the overall effectiveness of oxidative processes in the body. This pattern of thermodynamics: a quantitative sign of nutritional status; the second law of thermodynamics as a qualitative characteristic of nutritional status

scholarly journals The impact of some inorganic substances on change in body mass of Tenebrio molitor (Coleoptera, Tenebrionidae) larvae in a laboratory experiment

2018 ◽  
Vol 45 (1) ◽  
pp. 24-32 ◽  
Author(s):  
Vladyslav O. Martynov ◽  
Viktor V. Brygadyrenko
Keyword(s):  
Body Weight ◽  
Laboratory Experiment ◽  
Body Mass ◽  
Tenebrio Molitor ◽  
The Body ◽  
Iron Sulfate ◽  
Manganese Sulfate ◽  
Inorganic Substances ◽  
Short Period ◽  
The Impact

Abstract Addition of low concentrations of metal ions to the diet of saprophagous insects can impact on their metabolism over a short period of time, causing an increase or decrease in their body mass. This article presents a 14-day laboratory experiment evaluating the changes in the body mass of larval stage 3 of Tenebrio molitor (Linnaeus, 1758) induced by adding different inorganic substances (350 mg kg−1 of dry fodder) to the diet of the larvae. Following the addition of inorganic substances to the fodder, the most marked differences compared to the control were observed in the groups which consumed substrate with lead nitrate (the mass of the larvae increased on average by 102.6% compared to increase in mass in the control variant of the experiments), cobalt nitrate (by 96.9%), calcium chloride (by 89.1%) sodium triphosphate (by 86.0%), zinc chloride (by 83.5%). A nonsignificant effect (a tendency of increase in the body mass) on T. molitor larvae was caused by manganese sulfate (by 57.8%), aluminium nitrate (by 57.3%), iron oxide (by 51.5%), barium nitrate (by 47.9%), orthophosphoric acid (by 47.4%), manganese chloride (by 46.5%), calcium carbonate (by 27.7%), iron sulfate (by 24.2%) and ammonium heptamolybdate (by –7.5%). Therefore, 5 out of the 15 studied inorganic substances significantly stimulated the increase in the body weight of T. molitor larvae, and 7 manifested these capacities at the level of tendency (stimulated an increase in body weight averaging 43–58% over the 14-day experiment). The obtained data indicate a necessity for further study on the impact of inorganic pollutants on different stages of insects.

scholarly journals Maleriet og den ny krop - fire nordiske kunstnere 1900-1914

1999 ◽  
Vol 15 ◽  
Author(s):  
Niels Kayser Nielsen
Keyword(s):  
Large Scale ◽  
Southern Italy ◽  
Turn Of The Century ◽  
The Body ◽  
Time And Space ◽  
Oil Paintings ◽  
Living Space ◽  
Short Period ◽  
New Knowledge ◽  
Perception Of Time

Kunsten og maleriets fortolkning af kroppen i begyndelsen af 1900-tallet. Artiklen beskriver kunstnerens fremstilling af mandekroppen som et æstetisk objekt ofte med naturen som motiv.Nordic Painters and the new Body.The thesis of this article is that in the period around the turn of the century there was a decisive new departure in the perception of time and space in Nordic countries. This was expressed in the very movement of the body in time and space, in the areas of sport and physical exercise amongst others. It is also true of the representations of such movements, that is to say in literature and art. The article interprets the new knowledge of the being and the living space of the body in the years after 1900, including its relation to the pictorial arts. Of the Nordic painters who took sport and the body as their theme, four have been selected here. In Norway, Edvard Munch was working his way out of the straitjacket of self-obsession during the years around 1910 and for that reason became for a short period sun-worshipper and vitalist. Between 1910-12 Magnus Enckell from Finland painted a series of outdoor pictures full of lyricism and light depicting naked people on the margin between land and water. J.F.Willumsen travelled from Denmark to southern Italy in 1902 to create a set of photographs of naked boys bathing, which he later translated to large-scale oil paintings. Finally, there is Eugène Jansson from Sweden, perhaps the greatest sports enthusiast of them all. After 1910 he became increasing interested in power sport as a motif, exploring the compositional possibilities of the body and its ability to provide variation and harmony. The article demonstrates a marked difference in the perception of the body and its movement in the work of these four painters. At the same time there is a fundamental similarity in their enthusiastic and at the same time fearful fascination for corporeality and its new incarnation, which is so characteristic for the first two decades of the 20th century.

The Impact of Shariah Governance and Corporate Governance on the Risk Management Practices: Evidence from Local and Foreign Islamic Banks in Malaysia

2018 ◽  
Vol 15 (2) ◽  
pp. 1-20
Author(s):  
Sabri Embi ◽  
Zurina Shafii
Keyword(s):  
Risk Management ◽  
Corporate Governance ◽  
Management Practices ◽  
Principal Component ◽  
T Test ◽  
The Body ◽  
Primary Data ◽  
Islamic Banks ◽  
Shariah Governance ◽  
The Impact

The purpose of this study is to examine the impact of Shariah governance and corporate governance (CG) on the risk management practices (RMPs) of local Islamic banks and foreign Islamic banks operating in Malaysia. The Shariah governance comprises the Shariah review (SR) and Shariah audit (SA) variables. The study also evaluates the level of RMPs, CG, SR, and SA between these two type of banks. With the aid of SPSS version 20, the items for RMPs, CG, SR, and SA were subjected to principal component analysis (PCA). From the PCA, one component or factor was extracted each for the CG, SR, and RMPs while another two factors were extracted for the SA. Primary data was collected using a self-administered survey questionnaire. The questionnaire covers four aspects ; CG, SR, SA, and RMPs. The data received from the 300 usable questionnaires were subjected to correlation and regression analyses as well as an independent t-test. The result of correlation analysis shows that all the four variables have large positive correlations with each other indicating a strong and significant relationship between them. From the regression analysis undertaken, CG, SR, and SA together explained 52.3 percent of the RMPs and CG emerged as the most influential variable that impacts the RMPs. The independent t-test carried out shows that there were significant differences in the CG and SA between the local and foreign Islamic banks. However, there were no significant differences between the two types of the bank in relation to SR and RMPs. The study has contributed to the body of knowledge and is beneficial to academicians, industry players, regulators, and other stakeholders.

Influence of DAFS-25+polizon composition on blood and functional state of liver of steers at fattening

2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  
Keyword(s):  
Functional State ◽  
White Blood Cells ◽  
Live Weight ◽  
The Body ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
The Impact ◽  
Experimental Group ◽  
Stimulation Of

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.

Comparative assessment of morphological mechanisms of maintaining structural liver homeostasis in the dynamics of exposure to coal-rock dust and sodium fluoride on the body

2020 ◽  
pp. 189-194
Author(s):  
M. S. Bugaeva ◽  
O. I. Bondarev ◽  
N. N. Mikhailova ◽  
L. G. Gorokhova
Keyword(s):  
Sodium Fluoride ◽  
Morphological Changes ◽  
The Body ◽  
System Level ◽  
Production Factor ◽  
Coal Rock ◽  
The Impact ◽  
Structural Homeostasis ◽  
Rock Dust

Introduction. The impact on the body of such factors of the production environment as coal-rock dust and fluorine compounds leads to certain shift s in strict indicators of homeostasis at the system level. Maintaining the relative constancy of the internal environment of the body is provided by the functional consistency of all organs and systems, the leading of which is the liver. Organ repair plays a crucial role in restoring the structure of genetic material and maintaining normal cell viability. When this mechanism is damaged, the compensatory capabilities of the organ are disrupted, homeostasis is disrupted at the cellular and organizational levels, and the development of the main pathological processes is noted.The aim of the study is to compare the morphological mechanisms of maintaining structural homeostasis of the liver in the dynamics of the impact on the body of coal-rock dust and sodium fluoride.Materials and methods. Experimental studies were conducted on adult white male laboratory rats. Features of morphological mechanisms for maintaining structural homeostasis of the liver in the dynamics of exposure to coal-rock dust and sodium fluoride were studied on experimental models of pneumoconiosis and fluoride intoxication. For histological examination in experimental animals, liver sampling was performed after 1, 3, 6, 9, 12 weeks of the experiment.Results. The specificity of morphological changes in the liver depending on the harmful production factor was revealed. It is shown that chronic exposure to coal-rock dust and sodium fluoride is characterized by the development of similar morphological changes in the liver and its vessels from the predominance of the initial compensatory-adaptive to pronounced violations of the stromal and parenchymal components. Long-term inhalation of coal-rock dust at 1–3 weeks of seeding triggers adaptive mechanisms in the liver in the form of increased functional activity of cells, formation of double-core hepatocytes, activation of immunocompetent cells and endotheliocytes, ensuring the preservation of the parenchyma and the general morphostructure of the organ until the 12th week of the experiment. Exposure to sodium fluoride leads to early disruption of liver compensatory mechanisms and the development of dystrophic changes in the parenchyma with the formation of necrosis foci as early as the 6th week of the experiment.Conclusions. The study of mechanisms for compensating the liver structure in conditions of long-term exposure to coal-rock dust and sodium fluoride, as well as processes that indicate their failure, and the timing of their occurrence, is of theoretical and practical importance for developing recommendations for the timely prevention and correction of pathological conditions developing in employees of the aluminum and coal industry.The authors declare no conflict of interests.

Experience in the use of double broncholytic therapy in occupational practice

2019 ◽  
pp. 303-307
Author(s):  
Elena A. Beigel ◽  
Natalya G. Kuptsova ◽  
Elena V. Katamanova ◽  
Oksana V. Ushakova ◽  
Oleg L. Lakhman
Keyword(s):  
Quality Of Life ◽  
Personal Data ◽  
The Body ◽  
Step Test ◽  
Aluminum Production ◽  
Chronic Obstructive ◽  
Body Plethysmography ◽  
Occupational Copd ◽  
The Impact

Introduction. Occupational chronic obstructive pulmonary disease (COPD) is one of the leading nosological forms of occupational respiratory disease. Numerous studies have shown high effectiveness of the combination of indacaterol/glycopyrronium (Ultibro®breezhaler®) on the impact on clinical and functional indicators in the treatment of COPD in General practice.The aim of the investigation the case of occupational COPD with the analysis of the dynamics of functional indicators, tolerance to physical load and evaluation of the quality of life of workers engaged in aluminum production by using combination of indacaterol/glycopyrronium.Materials and methods. The random sampling method included 20 men, workers of aluminum production, with the established diagnosis of professional COPD at the age of 40 to 60 years. The survey was conducted (Borg scale, medical Research Council scale (mMRC) and COPD Assessment Test (CAT). Functional methods of studies were conducted: spirometry, body plethysmography, electrocardiography (ECG) and the six-minute stepper test (6-MST).Results. Against the background of 8 weeks of therapy, the volume of forced exhalation for 1 minute (FEV1) increased by 14.7% and amounted to 67.90% of the due values, the forced vital capacity of the lungs (FVC) increased by 11.3% and amounted to 76.95% of the due. According to the body plethysmography (BPG) is set to decrease in residual lung volume on average by 13.4% and static hyperinflation, confirmed by the decrease in functional residual volume (FRV) of 18.8%. During the study period increased physical activity of patients. The average difference between the distance traveled in the six-minute step test before and after treatment was 58.8 m. The analysis of personal data showed that the quality of life of patients improved, the total score in the questionnaire CAT at the beginning of the study was 16.9 points, and after 8 weeks decreased by 63% and amounted to 10.7 points.Conclusions: The Results indicate a positive effect of combination therapy with indacaterol/glycopyrronium on the course and progression of occupational COPD.

Studying Abroad in Nepal: Assessing Impact

2003 ◽  
Vol 9 (1) ◽  
pp. 175-188 ◽  
Author(s):  
Patricia Farrell ◽  
Murari Suvedi
Keyword(s):  
Personal Development ◽  
Intellectual Development ◽  
Longitudinal Research ◽  
Adult Learning Theory ◽  
Academic Program ◽  
The Body ◽  
Study Abroad Programs ◽  
Studying Abroad ◽  
Perceived Impact ◽  
The Impact

The purpose of this study is to analyze the reported or perceived impact of studying in Nepal on student’s academic program, personal development and intellectual development. The study draws upon adult learning theory to analyze survey instrument data, interviews, and case studies to discern the impact of the program on college students and to contribute to the body of longitudinal research on U.S. study abroad programs.

HBOT Application at Cases of Gingival Inflammation

2019 ◽  
Author(s):  
Ilma Robo
Keyword(s):  
Root Resorption ◽  
Periodontal Diseases ◽  
Therapeutic Effects ◽  
Clinical Effects ◽  
Gingival Inflammation ◽  
Beneficial Effects ◽  
New Therapeutic Approaches ◽  
Short Period ◽  
Mechanical Therapy ◽  
The Impact

The treatment of periodontal diseases, mainly of their origin, with the most common clinical manifestation in form of gingival inflammation, is manifold and powerful, including: mechanical therapy, antibiotic, antiseptic and various approaches to treatment, which are recommended to be used within a short period of time. New therapeutic approaches have been proven as alternative treatment to conventional therapy, or in combination with conventional therapies, to reduce the number of periodontopathic pathogens in gingival sulcus. HBOT has a detrimental effect on periodontal microorganisms, as well as beneficial effects on the healing of periodontal tissue, increasing oxygen pressure in gingival pockets. Our study is aimed at reviewing the current published literature on hyperbaric oxygen therapy and focuses on role of HBOT as a therapeutic measure for the individual with periodontal disease in general and for the impact on the recovery of gingival inflammation. HBOT and periodontal treatment together, reduce up to 99% of the gram-negative anaerobic load of subgingival flora. HBOT, significantly reduces subgingival anaerobic flora. Clinical effects in 2-year follow-up of treated patients are sensitive. Reduction of gingival hemorrhage indexes, depth of peritoneum, plaque index, occurs in cases of combination of HBOT and detraction. Reduced load persists up to 2 months after therapy. The significant increase in connective tissue removal starts at the end of 2nd week, to achieve the maximum in week 3-6 of application. HBOT used for re-implantation, stimulates the healing of periodontal membrane, pulp, prevents root resorption, healing of periodontal lining tissues. HBOT, significantly reduces the hemorrhage index with 1.2 value difference, 0.7mm probe depth, reduces gingival fluid by 2. HGH exposure is increased by gingival blood flow, with a difference of 2 in measured value. The therapeutic effects of HBOT in the value of the evaluation index can be saved up to 1-year post treatment.

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