Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "material body" wg kryterium: Temat


Wyświetlanie 1-10 z 10
Tytuł:
Vertical Fall of a Body Under Free Motion
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411583.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
material body
kinetics
free fall
Path/way length
velocity
acceleration
Inertia acceleration
Gravitation acceleration
time constant
Way constant
Gravitation number constant
Opis:
The paper aims at the kinetics of a body under free fall, especially free body motion, the motion occurring in the Earth environs space, that is in the range of the gravity action. A new adequate theory of such a motion, opening new not known kinetic magnitudes, has been elaborated. This theory has its source, which is the dependence of the way length on time. That is the way characteristics created in this work. The worked out theory has been verified by experiment, referred to two different realities. One of them was the body motion in the air environment of the Earth environs space, with the second one occurring in a determined machining space-time. The adequate earth acceleration/gravity has been calculated taking advantage of the theory elaborated; and its value, as indicated, is equal 3.85 mźs-2. Two kinds of accelerations have been separated: inertial and gravitational. The relations occurring between their values on the neighbouring potential fields, unstable, and stable, have been discovered. That discovery indicates on the existence of quantum nature of gravitation.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 4; 56-72
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary Structures Assessment of Some TRIP Steels
Autorzy:
Pantilimon, Mircea Cristian
Berbecaru, Andrei-Constantin
Coman, George
Sohaciu, Mirela G.
Dumitrescu, Ruxandra Elena
Ciucă, Sorin
Gherghescu, Ioana-Arina
Predescu, Cristian
Powiązania:
https://bibliotekanauki.pl/articles/27313868.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
TRIP steel
optical microscopy
Vickers hardness
retained austenite
car body material
Opis:
Automotive industry is constantly interested in building cars made of light and high strength parts in order to reduce the emission levels, the fuel consumption and minimize the effects of a car crash. Some parts may be made of lighter materials, but the steel ones must compensate the strength needed for the car body. Research is made for finding new materials showing high strength combined with high ductility. Among them, transformation - induced - plasticity steels are of great interest, efforts being made to improve their characteristics. A new composition of such a steel is presented, its features being compared with those of three other steels of the same class and category. Optical microscopy at different magnifications is performed, together with Vickers hardness test. Structural particularities are found for each tested steel, justified by their own chemical compositions. The new steel reveals important characteristics: besides the mainly bainitic structure, it has both larger ferritic areas and amounts of retained austenite, making him proper for further study.
Źródło:
Archives of Metallurgy and Materials; 2023, 68, 2; 491--498
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Materiality of body, materiality of world - remarks on emancipatory education: Illich, Freire and contemporary political philosophy
Autorzy:
Zbrzeźniak, Urszula
Powiązania:
https://bibliotekanauki.pl/articles/437444.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie. Instytut Filozofii i Socjologii
Tematy:
body
material condition
emancipation
Paulo Freire
Ivan Illich
Opis:
The paper addresses the issue of the corporeal dimension of the learning process. The problem of the material side of education has emerged within the emancipatory education project, but, as will be argued, this was limited to a critique inspired by Marxist tradition. The perspective on the materiality of education offered by Freire’s and Illich’s works can be significantly enriched by contemporary political thought. The latter perceives materiality in its complexity, that is, as economic conditions but also as the inherent needs stemming from our bodily condition. As will be demonstrated, the contemporary reflection could serve as a critique, one on the limited character of Freire’s and Illich’s emancipatory education, as well as providing ideas which might expand their project.
Źródło:
ARGUMENT: Biannual Philosophical Journal; 2019, 9, 2; 237-251
2083-6635
2084-1043
Pojawia się w:
ARGUMENT: Biannual Philosophical Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examining the degradation process of the heat/cold protecting insulation applied for construction of cooling bodies under the influence of water
Autorzy:
Rochatka, T.
Powiązania:
https://bibliotekanauki.pl/articles/114327.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
degradation of insulation material
heat flux
thermovision
isothermal body
Opis:
Contemporary transport of perishable food and other cargoes sensitive for temperature changes is carried out basing on specialist isothermal and cooling bodies. The reason of the deterioration of the body insulation condition is the penetration of water into the heat/cold protecting material and the further destruction of the insulation properties by moisture which in the insulating material is subject to cyclic freezing and defrosting processes depending on the temperature of the transported goods. The paper presents the test results on the destruction of the insulating material under the influence of cyclic freezing and defrosting of water introduced into the insulating material. The effects of servicing the damp insulating material were examined depending on the quantity of cycles of freezing and defrosting getting much worse deterioration of insulating properties than in case of entering water into the dry insulating material.
Źródło:
Measurement Automation Monitoring; 2017, 63, 3; 119-121
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the material and spatial description of rigid fields
O materialnym i przestrzennym opisie ciał sztywnych
Autorzy:
Rudnicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/279312.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
kinematics
rigid body
material and spatial description
relative motion
Opis:
Rigid kinematics is re-examined applying the material, spatial and mixed description without use of any coordinate system. Some tensor representations for the displacement gradient, velocity gradient, and acceleration gradient are obtained. Special cases of rotation about fixed as well as nearly fixed axis are distinguished. Assumption of small rotation is also taken into account. Relative motion of a particle is briefly described.
Rozważono kinematykę ciała sztywnego w opisie materialnym, przestrzennym i mieszanym bez wprowadzania układu współrzędnych. Przedstawiono reprezentacje tensorowe gradientów pól przemieszczenia, prędkości i przyspieszenia. Wyodrębniono przypadki szczególne obrotu wokół stałej oraz prawie stałej osi. Zbadano ruch przy założeniu małego obrotu. Naszkicowano zagadnienie ruchu względnego cząstki.
Źródło:
Journal of Theoretical and Applied Mechanics; 2005, 43, 4; 825-840
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on Changes in Thickness of STS304 Material in the Progressive Drawing Process
Autorzy:
Lee, C. K.
Kim, Y. C.
Powiązania:
https://bibliotekanauki.pl/articles/356710.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
body thickness
drawing
flange thickness
corner roundness
material thickness
Opis:
In the drawing process, the roundness of corners in the punch and the die are very important factors in determining the thicknesses of the product. The results clearly revealed that the thickness of a flange was increased and the thickness of body parts reduced when the roundness of the die entrance was small. The material thickness of the top part was decreased when the corner roundness of the punch was large. The smooth inflow of materials was found to have a significant effect on the thickness during the post-process. The compressive strength of STS 304 material exhibited a higher value compared with other processing methods. Moreover, we clearly observed the corner roundness of the punch and the die to be a very important factor for STS 304 materials.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1319-1323
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Analysis, Accuracy and Utilization of Open-Source Photogrammetric
Analiza, dokładność i wykorzystanie oprogramowania fotogrametrycznego open source
Autorzy:
Bartos, K.
Pukanska, K.
Sabova, J.
Powiązania:
https://bibliotekanauki.pl/articles/319023.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
open source software
digital photogrammetry
testing body
oprogramowanie open source
fotogrametria cyfrowa
materiał badawczy
Opis:
A multi-image orientation is one of the most important tasks in photogrammetry and 3D modelling in computer vision. The accuracy of image orientation and camera calibration significantly influences the quality of all consecutive processes, such as a determination of spatial coordinates of individual points or 3D modelling. Therefore, orientation and calibration are an essential prerequisite for several applications. In the last years, various types of algorithms and software provided as an open-source software that allow to perform these processes with varying degrees of user interventions and settings have begun to appear and be used. The aim of this work is to focus on the most accessible and potentially the most suitable types of such software (or web services) and to compare their reliability, quality of spatial object reconstruction into digital spatial data and the quality of photo-texture, provided by them. For this purpose, a testing solid body made of a suitable material and with a suitable shape and dimensions, whose images were acquired by a DSLR camera, was used. Subsequently, these images were used for testing and comparison of individual open-source photogrammetric software.
Orientacja multi-obrazów jest jednym z najważniejszych zadań w fotogrametrii i modelowaniu 3D. Dokładność orientacji obrazu i kalibracji aparatu znacząco wpływa na jakość wszystkich kolejnych procesów, takich jak określenie współrzędnych przestrzennych poszczególnych punktów lub modeli 3D. Dlatego, orientacja i kalibracja, są niezbędne w wielu zastosowaniach. W ostatnich latach pojawiły się różne algorytmy i programy określonych jako oprogramowanie open-source. Celem artykułu jest zwrócenie uwagi na najbardziej dostępne i potencjalnie najbardziej odpowiednie rodzaje takiego oprogramowania (lub usług internetowych) i porównanie ich niezawodności, jakości odwzorowana obiektu przestrzennego do cyfrowych danych przestrzennych i jakości zdjęć. W tym celu badania przeprowadzono na modelu w postaci stałej wykonanego z odpowiedniego materiału i o odpowiednim kształcie i wymiarach, którego obrazy zostały wykonane za pomocą lusrtzanki. Następnie zdjęcia te były używane do testowania i porównywania poszczególnych programów fotogrametrycznych open-source.
Źródło:
Inżynieria Mineralna; 2014, R. 15, nr 1, 1; 299-306
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure of embryogenic tissues and accumulation of storage materials in somatic embryos of Picea abies and P. omorika
Autorzy:
Hazubska-Przybyl, T
Bojarczuk, K.
Guzicka, M.
Powiązania:
https://bibliotekanauki.pl/articles/41109.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Picea abies
Picea omorica
tissue
spruce
development
starch grain
lipid body
embryogenic tissue
storage material
somatic embryo
plant tissue
Opis:
Microscopic analysis of embryogenic tissues of Picea abies and P. omorika showed that the tissues differed in proportions of various types of proembryogenic masses, and in presence/absence of early somatic embryos, which suggests that they differed in embryogenic potential. On the basis of this study, embryogenic competence of tissues can be assessed at early stages of somatic embryogenesis, and thus the most efficient lines can be selected (one Picea abies and two P. omorika). In the course of development of somatic embryos embryogenic tissue was placed on a medium with abscisic acid (ABA), which affects an increase in osmotic pressure at the stage of maturation of somatic embryos and finally on the regeneration of cotyledonary embryos. In this stage of embryos development, storage materials were accumulated, which are used in specific metabolic processes during embryo development.
Źródło:
Dendrobiology; 2008, 60; 19-28
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The calculation method of small-sized composite enclosures in CAD/CAE systems
Metodika rascheta malogabaritnykh korpusov iz kompozicionnykh materialov v CAD/CAE sistemakh
Autorzy:
Malkov, I.
Sirovoy, G.
Nepran, I.
Kashkarov, S.
Powiązania:
https://bibliotekanauki.pl/articles/792255.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
calculation method
small sized composite
heterogenous model
homogenous model
physicomechanical property
stress tensor
transversally isotropic body
composite material
CAD-CAE system
Opis:
This article is about the possibility of calculating of the small enclosures made of composite materials in CAD/CAE systems. The initial data for calculating consists of the fiber and matrix elastic constants and the fiber volume content in the composite. The stressstrain state has been obtained. The enclosure was loaded with the internal pressure.
В статье рассмотренна возможность расчета элементов конструкции из композитных материалов в CAD/CAE системах, исходными данными для расчета которых являются упругие константы волокна и матрицы, а так же объемное содержание волокна в композите. Полученно напряженно-деформированное состояние простых элементов, нагруженных внутренним давлением и сжимающей силой.
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Construction of the approximate stability equations of motion for an elastic cylindrical body under axial compressive load
Autorzy:
Banakh, I.
Kolinko, M.
Powiązania:
https://bibliotekanauki.pl/articles/411449.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
elastic body
stress tensor
perturbation of displacement vector
stability equations of motion
standard material of the 2nd order
compresive load
Opis:
A method of constructing nonlinear motion stability equations for isotropic elastic bodies is developed for cylindrical bodies of standard material of the 2nd order subjected to the action of “dead” axial compressive forces. The perturbation of the displacement vector is given by its approximate decomposition with respect to the base of tensor functions of the 1st, 2nd and 3d valences. The time-dependent tensor coefficients of the decomposition satisfy the system of ordinary differential equations. Based on the obtained equations one can investigate the balance stability of cylindrical bodies under various fixing conditions.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2014, 3, 4; 69-73
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-10 z 10

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies