ANALYSIS OF FACTORS AFFECTING THE STABILITY OF THE VEHICLE WHEN DRIVING ON CURVED LINES

2018 ◽  
pp. 43-51
Author(s):  
Georgi Georgiev
Keyword(s):  
Theoretical Study ◽  
Motor Vehicles ◽  
Power Balance ◽  
Factors Affecting ◽  
Number Of Factors ◽  
The Stability ◽  
The Impact ◽  
Vehicle Movement

To ensure safety during vehicle movement, it is necessary to take into account the magnitude of the impact of a number of factors. One of the important elements to be taken into consideration is the stability of the vehicles while driving. The factor is particularly important when driving cars on a curved path, whereby the forces acting on motor vehicles are reallocated and influence their stability. In the report, a theoretical study was made on the factors and the power balance in different states of movement of the means of transport.

scholarly journals Anthocyanins: Factors Affecting Their Stability and Degradation

Antioxidants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1967
Author(s):  
Bianca Enaru ◽  
Georgiana Drețcanu ◽  
Teodora Daria Pop ◽  
Andreea Stǎnilǎ ◽  
Zorița Diaconeasa
Keyword(s):  
Antimicrobial Properties ◽  
Point Of View ◽  
Water Soluble ◽  
Factors Affecting ◽  
Color Palette ◽  
Number Of Factors ◽  
Major Disadvantage ◽  
Phenolic Group ◽  
The Stability ◽  
The Impact

Anthocyanins are secondary metabolites and water-soluble pigments belonging to the phenolic group, with important functions in nature such as seed dispersal, pollination and development of plant organs. In addition to these important roles in plant life, anthocyanins are also used as natural pigments in various industries, due to the color palette they can produce from red to blue and purple. In addition, recent research has reported that anthocyanins have important antioxidant, anticancer, anti-inflammatory and antimicrobial properties, which can be used in the chemoprevention of various diseases such as diabetes, obesity and even cancer. However, anthocyanins have a major disadvantage, namely their low stability. Thus, their stability is influenced by a number of factors such as pH, light, temperature, co-pigmentation, sulfites, ascorbic acid, oxygen and enzymes. As such, this review aims at summarizing the effects of these factors on the stability of anthocyanins and their degradation. From this point of view, it is very important to be precisely aware of the impact that each parameter has on the stability of anthocyanins, in order to minimize their negative action and subsequently potentiate their beneficial health effects.

Impact of climatic conditions on the parameters of failure flow of military vehicles

2021 ◽  
pp. 095440702110202
Author(s):  
Nikolaj Dobrzinskij ◽  
Algimantas Fedaravicius ◽  
Kestutis Pilkauskas ◽  
Egidijus Slizys
Keyword(s):  
Climatic Factors ◽  
Armed Forces ◽  
Climatic Conditions ◽  
Operating Conditions ◽  
Technical Equipment ◽  
Factors Affecting ◽  
Military Vehicles ◽  
Equipment Reliability ◽  
Number Of Factors ◽  
The Impact

Relevance of the article is based on participation of armed forces in various operations and exercises, where reliability of machinery is one of the most important factors. Transportation of soldiers as well as completion of variety of tasks is ensured by properly functioning technical equipment. Reliability of military vehicles – armoured SISU E13TP Finnish built and HMMWV M1025 USA built were selected as the object of the article. Impact of climatic conditions on reliability of the vehicles exploited in southwestern part of the Atlantic continental forest area is researched by a case study of the vehicles exploitation under conditions of the climate of Lithuania. Reliability of military vehicles depends on a number of factors such as properties of the vehicles and external conditions of their operation. Their systems and mechanisms are influenced by a number of factors that cause different failures. Climatic conditions represent one of the factors of operating load which is directly dependent on the climate zone. Therefore, assessment of the reliability is started with the analysis of climatic factors affecting operating conditions of the vehicles. Relationship between the impact of climatic factors and failure flow of the vehicles is presented and discussed.

Factors affecting the amplitude of the τ angle in proteins: a revisitation

2017 ◽  
Vol 73 (7) ◽  
pp. 618-625 ◽  
Author(s):  
Nicole Balasco ◽  
Luciana Esposito ◽  
Luigi Vitagliano
Keyword(s):  
Protein Structures ◽  
Factors Affecting ◽  
X Ray ◽  
Backbone Conformation ◽  
Potential Factors ◽  
The Stability ◽  
Major Factors ◽  
The Impact ◽  
Open Issues

The protein folded state is the result of the fine balance of a variety of different forces. Even minor structural perturbations may have a significant impact on the stability of these macromolecules. Studies carried out in recent decades have led to the convergent view that proteins are endowed with a flexible spine. One of the open issues related to protein local backbone geometry is the identification of the factors that influence the amplitude of the τ (N—Cα—C) angle. Here, statistical analyses performed on an updated ensemble of X-ray protein structures by dissecting the contribution of the major factors that can potentially influence the local backbone geometry of proteins are reported. The data clearly indicate that the local backbone conformation has a prominent impact on the modulation of the τ angle. Therefore, a proper assessment of the impact of the other potential factors can only be appropriately evaluated when small (φ, ψ) regions are considered. Here, it is shown that when the contribution of the backbone conformation is removed by considering small (φ, ψ) areas, an impact of secondary structure, as defined byDSSP, and/or the residue type on τ is still detectable, although to a limited extent. Indeed, distinct τ-value distributions are detected for Pro/Gly and β-branched (Ile/Val) residues. The key role of the local backbone conformation highlighted here supports the use of variable local backbone geometry in protein refinement protocols.

Reliability in the structure of professional and personal qualities of a specialist of the Ministry of Emergencies of Russia

2020 ◽  
pp. 7-17
Author(s):  
Stanislav N. Savinkov ◽  
Nina A. Koval
Keyword(s):  
Scientific Development ◽  
Professional Activity ◽  
Special Importance ◽  
Factors Affecting ◽  
Training Support ◽  
Number Of Factors ◽  
Moral Qualities ◽  
Personal Qualities ◽  
The Stability ◽  
Pedagogical Literature

In the modern conditions of fulfilling professional duties, the issue of studying the personal and professional qualities of specialists of the Ministry of Emergencies of Russia has a special importance. Today, issues related to the study of the specifics of the professional qualities of specialists of the Ministry of Emergencies of Russia within the framework of scientific issues of modern psychology are of increasing importance. This is due to a number of factors, both the need for a deeper study of the principles of the formation of special skills and abilities, professionally important personal qualities of specialists of the Ministry of Emergencies of Russia, and insufficient scientific development, which puts these issues among the most relevant. We carried out analytical understanding of psychological and pedagogical literature on the topic. The theoretical and methodological analysis of the reliability problem indicates that it is not considered as an independent problem and is not established in the traditionally existing systems of selection, training, support of specialists. We considered the structure of reliability in the context of professional and personal qualities of specialists of the Ministry of Emergencies of Russia working in conditions involving danger to life. We gave an analysis of factors affecting the professional and personal reliability of a specialist of the Russian Emergencies Ministry. Personal and professional reliability of a specialist of the Ministry of Emergencies of Russia is a characteristic of personal features and qualities that determine the stability of reference normative behavior by indicators of personal reliability in professional activity. At the same time, another important parameter of personal-professional reliability is the moral and moral qualities of the specialist, his spiritual and moral maturity. We presented the results of research on the study of personal and professional qualities conducted with specialists of the Ministry of Emergencies of Russia.

scholarly journals The Determinants Of Population Health Spatial Disparities

2014 ◽  
Vol 17 (4) ◽  
pp. 173-185 ◽  
Author(s):  
Emilia Modranka ◽  
Jadwiga Suchecka
Keyword(s):  
Social Development ◽  
Access To Health Care ◽  
Health Care Services ◽  
Empirical Studies ◽  
Factors Affecting ◽  
Explanatory Variables ◽  
Spatial Disparities ◽  
Care Services ◽  
Number Of Factors ◽  
The Impact

Health of the population is one of the basic factors of social development. The results of empirical studies indicate a number of factors determining the level of health of the population related to access to health care services, the level of environmental pollution and the wealth of society. It must be assumed that the observed disparities in the health depend on distributions of particular determinants. The aim of the article is to assess the significance of the main factors affecting the occurrence of spatial disparities in the level of social development districts NTS-4 in terms of health of the population. The analysis was based on estimates of the Spatial Durbin Model (SDM) which takes into account the impact of neighborhood spatial units on level of dependent variable and the explanatory variables. The size of the level of social development in terms of health of the population in the study was approximate by the aggregate value of the index, which is the local component of the Local Human Development Index LHDI.

scholarly journals Effects Of The Combined Heat And Cryogenic Treatment On The Stability Of Austenite In A High Co-Ni Steel

2015 ◽  
Vol 60 (3) ◽  
pp. 2131-2137 ◽  
Author(s):  
M. Gruber ◽  
S. Ploberger ◽  
G. Ressel ◽  
M. Wiessner ◽  
M. Hausbauer ◽  
...  
Keyword(s):  
Phase Distribution ◽  
Cryogenic Treatment ◽  
Tempering Temperature ◽  
Factors Affecting ◽  
Transmission Electron ◽  
Reverted Austenite ◽  
Before And After ◽  
Different Temperatures ◽  
The Stability ◽  
The Impact

Abstract The stability of austenite is one of the most dominant factors affecting the toughness properties of high Co-Ni steels such as Aermet 100 and AF1410. Thus, the aim of this work was to get a deeper understanding on the impact of combined heat and cryogenic treatment on the stability of retained and reverted austenite. In order to characterize the evolution of the phase fraction of austenite during tempering at different temperatures and times, X-ray diffraction analyses were carried out. The stability of austenite, which was formed during tempering, was analyzed with dilatometric investigations by studying the transformation behavior of the austenite during cooling from tempering temperature down to −100°C. Additionally, transmission electron microscopy investigations were performed to characterize the chemical composition and phase distribution of austenite and martensite before and after tempering.

scholarly journals Development of software for zoning of the territory by the degree of damage to vegetation

2019 ◽  
Author(s):  
А.С. Алексеев ◽  
М.О. Гурьянов ◽  
А.И. Герасимова
Keyword(s):  
Spatial Dynamics ◽  
Pollution Sources ◽  
Local Pollution ◽  
Sources Of Pollution ◽  
Management Measures ◽  
Number Of Factors ◽  
Software Product ◽  
Degree Of Damage ◽  
The Stability ◽  
The Impact

Необходимость создания программного обеспечения, позволяющего зонировать территорию по степени повреждения древесной растительности. Рассмотрено два типа источников загрязнения точечные (химические, металлургические предприятия и т. д.) и линейные (автомагистрали, ЛЭП и пр.). Методика сбора и обработки эмпирических данных для них является во многом идентичной и зависит от целого ряда факторов, основными из которых являются размер обследуемого объекта, компоненты экосистем, на основании которых оценивается их состояние, масштаб загрязнения и др. При изучении воздействия локальных источников загрязнения одними из оптимальных объектов мониторинга являются древостои, состояние которых оценивается на постоянных и временных пробных площадях, заложенных в насаждениях основных лесообразующих пород на разных расстояниях от источника загрязнения. При рассмотрении линейных источников загрязнения нет необходимости учитывать влияние ветра, вместо этого рассматривается расстояние между пробными площадями вдоль трасс. Исследовались древостои, находящиеся в зоне антропогенной нагрузки, в частности, примыкающие к ОАО ХенкельЭРА Тосненского района и ул. Коммуны СанктПетербурга. Разработана программа, позволяющая оценить пространственное размещение повреждений растительности, выделить зоны сильного, среднего и слабого (общего) повреждения, построить карты зон повреждений и определить площади каждой из зон. Рассмотренная методика и составленный на ее основании программный продукт PlantZoning могут быть использованы при анализе антропогенного воздействия на насаждения с целью определения его пространственной динамики и последующего планирования лесохозяйственных мероприятий, направленных на оценку и ликвидацию причиненного ущерба, а также повышение устойчивости насаждений и их поглотительной способности. The creation of software that allows zoning the territory by the degree of damage to plant vegetation. In the presented article, two types of pollution sources were considered point (chemical, metallurgical enterprises, etc.) and linear (motorways, power lines, etc.). The methodology for collecting and processing empirical data for them is largely identical and depends on a number of factors, the main ones being the size of the surveyed object, the components of ecosystems on the basis of which their state, pollution scale, etc. are assessed. When studying the impact of local pollution sources by one of the optimal objects of monitoring are stands, the state of which is assessed on permanent and temporary trial plots laid in plantations of the main forestforming species on different rai distances from the source. When considering linear sources of pollution, it is not necessary to take into account the influence of the wind, instead the distance between trial plots along the traces is considered. Stands in the zone of anthropogenic load. In particular, adjacent to OJSC HenkelERA Tosnensky district and street Commune of St. Petersburg. A program has been developed that allows to estimate the spatial distribution of vegetation damage, identify zones of strong, medium and weak damage, build maps of damage zones and determine the areas of each of the zones. The considered method and the software product PlantZoning based on it, can be used in the analysis of anthropogenic impact on plantations in order to determine its spatial dynamics and subsequent planning of forest management measures aimed at assessing and eliminating the damage caused, as well as increasing the stability of plantations and their absorptive capacity.

scholarly journals Pace and stability of embryonic development affect telomere dynamics: an experimental study in a precocial bird model

2020 ◽  
Vol 287 (1933) ◽  
pp. 20201378 ◽  
Author(s):  
Antoine Stier ◽  
Neil B. Metcalfe ◽  
Pat Monaghan
Keyword(s):  
Embryonic Development ◽  
Telomere Length ◽  
Incubation Temperature ◽  
Key Factors ◽  
Factors Affecting ◽  
Adult Disease ◽  
Potential Contributor ◽  
The Stability ◽  
The Impact ◽  
Telomere Dynamics

Prenatal effects on telomere length are increasingly recognized as a potential contributor to the developmental origin of health and adult disease. While it is becoming clear that telomere length is influenced by prenatal conditions, the factors affecting telomere dynamics during embryogenesis remain poorly understood. We manipulated both the pace and stability of embryonic development through varying incubation temperature and its stability in Japanese quail. We investigated the impact on telomere dynamics from embryogenesis to adulthood, together with three potential drivers of telomere shortening, growth rate, oxidative damage and prenatal glucocorticoid levels. Telomere length was not affected by our prenatal manipulation for the first 75% of embryogenesis, but was reduced at hatching in groups experiencing faster (i.e. high temperature) or less stable embryonic development. These early life differences in telomere length persisted until adulthood. The effect of developmental instability on telomere length at hatching was potentially mediated by an increased secretion of glucocorticoid hormones during development. Both the pace and the stability of embryo development appear to be key factors determining telomere length and dynamics into adulthood, with fast and less stable development leading to shorter telomeres, with the potential for adverse associated outcomes in terms of reduced longevity.

scholarly journals MODELING METHODOLOGY OF PROGRESSIVE COLLAPSE BY THE EXAMPLE OF REAL HIGH-RISE BUILDINGS / AUKŠTYBINIŲ PASTATŲ PROGRESUOJANČIOS GRIŪTIES MODELIAVIMAS

2014 ◽  
Vol 6 (5) ◽  
pp. 520-530
Author(s):  
Mariya Barabash
Keyword(s):  
Progressive Collapse ◽  
Emergency Situation ◽  
Calculation Model ◽  
Main Concern ◽  
Existing Building ◽  
Factors Affecting ◽  
High Rise ◽  
Modeling Methodology ◽  
The Stability ◽  
The Impact

The purpose of the research was to find out several ways to design real buildings with protective measures against progressive collapse. There are no uniform guidelines for choosing the type of finite element able to provide the necessary accuracy of the calculation model taking into account all the main factors affecting the strength and stability of the building. Therefore it is required to develop numerical methods for calculation on progressive collapse of buildings bearing structural elements in case of emergency. In addition, our task was to present a methodology that allows checking the stability of the building agains progressive collapse. By the technique nonlinear analysis on special (emergency) regulations combination of loads and impacts is performed, including permanent and long-term regulatory burden and the impact of hypothetical local fractures bearing structures. This study was carried out on the high rise apartment complex with underground parking. In the empirical part of the study the main concern was to find out the reasons of progressive collapse of structures, taking into account stepwise assembly, building inspection performed rollover. Also the existing building retail and office complex “Gulliver” with public facilities and parking is considered, where computation was made on the progressive collapse of the upper slab technical floor. The calculation was carried out on plates or emergency landing helicopter crash on the floor slab. Analysis of the results leads to the following conclusions. To assess the real vitality of the building in an emergency situation, and resistance to progressive collapse it is recommended to count design taking into account physical and geometric nonlinearity and process modeling lifecycle. Straipsnyje nagrinėjamas aukštybinių pastatų progresuojančios griūties modeliavimas. Pasitelkiant programinę įrangą LIRA- SAPR atliktas kompiuterinis eksperimentas, iliustruojantis pastato griūtį veikiant įvairiems veiksniams.

scholarly journals An NMR Metabolomics Approach to Investigate Factors Affecting the Yoghurt Fermentation Process and Quality

Metabolites ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 293
Author(s):  
Alessia Trimigno ◽  
Christian Bøge Lyndgaard ◽  
Guðrún Anna Atladóttir ◽  
Violetta Aru ◽  
Søren Balling Engelsen ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Milk Proteins ◽  
Starter Cultures ◽  
Factors Affecting ◽  
Nmr Metabolomics ◽  
Milk Fermentation ◽  
Number Of Factors ◽  
The Impact ◽  
Insight Into

A great number of factors can influence milk fermentation for yoghurt production such as fermentation conditions, starter cultures and milk characteristics. It is important for dairy companies to know the best combinations of these parameters for a controlled fermentation and for the desired qualities of yoghurt. This study investigates the use of a 1H-NMR metabolomics approach to monitor the changes in milk during fermentation from time 0 to 24 h, taking samples every hour in the first 8 h and then at the end-point at 24 h. Three different starter cultures (L. delbrueckii ssp. bulgaricus, S. thermophilus and their combination) were used and two different heat treatments (99 or 105 °C) were applied to milk. The results clearly show the breakdown of proteins and lactose as well as the concomitant increase in acetate, lactate and citrate during fermentation. Formate is found at different initial concentrations depending on the heat treatment of the milk and its different time trajectory depends on the starter cultures: Lactobacillus cannot produce formate, but needs it for growth, whilst Streptococcus is able to produce formate from pyruvate, therefore promoting the symbiotic relationship between the two strains. On the other hand, Lactobacillus can hydrolyze milk proteins into amino acids, enriching the quality of the final product. In this way, better insight into the protocooperation of lactic acid bacteria strains and information on the impact of a greater heat treatment in the initial matrix were obtained. The global chemical view on the fermentations provided using NMR is key information for yoghurt producers and companies producing starter cultures.

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