Temat: constant work - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Extension of longwall’s effective working time
Wydłużenie efektywnego czasu pracy przodka ścianowego
Autorzy:: Czerwiński, S.
Powiązania:: https://bibliotekanauki.pl/articles/112949.pdf
Data publikacji:: 2014
Wydawca:: STE GROUP
Tematy:: mining facility
output
economic result
"lost" possibilities
malfunctions
effective work of longwall shearers
constant work
number of mining shifts
zakład górniczy
wielkość wydobycia
wynik ekonomiczny
„utracone” możliwości
awaria
efektywna praca kombajnów
praca ciągła
ilości zmian wydobywczych
Opis:: The article presents a way to increase annual output of a mining facility by 25% with unaltered employment system. The article presents comparative analysis of a mining facility, its output, economic results of sales, “lost” possibilities, stoppages due to malfunctions, effective work of longwall shearers and their predicted malfunction-free working time depending on a number of mining shifts. Implementation of constant work i.e. increasing the number of mining shifts to four per twenty four hours will allow for enhancement of a mining facility’s production capabilities utilization and decrease of a mining facility’s losses which will result in improvement of economic results of sales.
W artykule przedstawiono sposób wzrostu wydobycia rocznego zakładu wydobywczego, o około 25%, przy niezmienionym systemie zatrudnienia pracowników. Przedstawiono analizę porównawczą zakładu wydobywczego, jego wielkości wydobycia, wyniku ekonomicznego ze sprzedaży, „utracone” możliwości, przerwy spowodowane awariami, efektywną pracę kombajnów oraz możliwą pracę kombajnów bez awarii w zależności od ilości zmian wydobywczych. W wyniku zastosowania pracy ciągłej, tj. zwiększenia liczby zmian wydobywczych z produkcją na dobę, czyli zastosowanie czwartej zmiany wydobywczej umożliwi zwiększenie stopnia wykorzystania zdolności produkcyjnej zakładu wydobywczego, oraz zmniejszy straty zakładu górniczego, co poprawi wynik ekonomiczny ze sprzedaży.
Źródło:: Systemy Wspomagania w Inżynierii Produkcji; 2014, 1 (7); 34-42
2391-9361
Pojawia się w:: Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Ora sive labora?
Autorzy:: Zyzak, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/571788.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Papieski Jana Pawła II w Krakowie
Tematy:: constant prayer
work
lay spirituality
prayer
modlitwa nieustanna
praca
duchowość laikatu
modlitwa
Opis:: Reflecting upon the relationship between prayer and work the Author of the article refers to the well known Benedictine formula “ora et labora”. It is to emphasize that both, prayer and work should find a proper place in a Christian’s life. Since the accents can be optional, the Author claims that within the incarnational spirituality the lay Christians may identify themselves rather with the reverse order of this formula: “labora et ora”. However we should never separate these two options neither put them in the form: “ora sive labora”, which has been provocatively used in the title of this paper. The true masterpiece of the lays’ life is to perform duties of Martha in the spirit of Mary, which does not necessarily mean the focus on God during one’s work. It’s often even impossible. The work itself done professionally and with the proper intention can become a form of ontological worship, unless one would neglect the prayer itself. Nourished with prayer the theologal love makes all activities a form of adoration of God, transforming life into the constant prayer.
Źródło:: Polonia Sacra; 2013, 17, 1
1428-5673
Pojawia się w:: Polonia Sacra
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Novel Modeling of the Work-Hardening Curve
Autorzy:: Pluta, P.
Hryniewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/411581.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Hardening curve
yield stress
Relative deformation
Relative deformation constant;
Absolute strain constant
Stress potential fields
Strain potential fields
Yield force
Plastic rigidity
Plastic energy
Yield work
Opis:: The paper aims at a critical analysis of the existent description of plastic strengthening/ work-hardening curve. The adequate description of the curve, having a physical sense, has been proposed. The description begins from the very source which is the primary, general differential equation. That source was used to formulate the characteristics of the studied system. Then the analytical solution of the dependence between the yield stress and the relative deformation is provided. The description of the work-hardening curve has been developed to further form a proper dependence of the yield force on the absolute yield strain. Other functional characteristics, namely the coefficient of the plastic rigidity, yield work, and the plastic potentials, have also been formed.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 4; 73-90
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Thermodynamic Characteristics of Solid
Autorzy:: Pluta, Z.
Hryniewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/411946.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: thermodynamic characteristics
interstate space
hermodynamics
solid
potential field
specific proper heat energy
specific gained heat energy
energetic band
heat work
source characteristics of entropy growth
entropy constant
Opis:: The paper is to present the developed thermodynamic characteristics of a solid. The existent description of dependence of temperature on the proper entropy (thermal capacitance) was used as the beginning point of the considerations. A critical evaluation of the picture of that dependence was a consecutive link of the considerations. Furthermore, an adequate description of the discussed heat phenomenon, taking into account the detailed characteristics of the entropy growth characteristics, has been presented. This characteristics indicates a clear quantum character of the studied reality, reflected by the potentials, proper and gained, respectively. These magnitudes are the measures of the proper and gained specific energies of this thermodynamic factor. The dependence of temperature on the specific energy has been described to formulate a formula on the heat work. At the end the dependence between the specific heat and the entropy constant is derived. In conclusion, a quantum nature of macroscopic reality has been noticed together with the definition of the heat energy notion. The necessity of noticing the description of any other reality in this scale has been indicated.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 2; 60-71
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Determination of constant parameters of copper as power-law hardening material at different test conditions
Autorzy:: Kowser, M. A.
Mahiuddin, M.
Powiązania:: https://bibliotekanauki.pl/articles/955240.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: power-law hardening constant
work-hardening process
stress hardening exponent
power-law hardening material
heat treatment
tensile test
stress-strain curve
proces utwardzania
obróbka cieplna
próba rozciągania
Opis:: In this paper a technique has been developed to determine constant parameters of copper as a power-law hardening material by tensile test approach. A work-hardening process is used to describe the increase of the stress level necessary to continue plastic deformation. A computer program is used to show the variation of the stress-strain relation for different values of stress hardening exponent, n and power-law hardening constant, α . Due to its close tolerances, excellent corrosion resistance and high material strength, in this analysis copper (Cu) has been selected as the material. As a power-law hardening material, Cu has been used to compute stress hardening exponent, n and power-law hardening constant, α from tensile test experiment without heat treatment and after heat treatment. A wealth of information about mechanical behavior of a material can be determined by conducting a simple tensile test in which a cylindrical specimen of a uniform cross-section is pulled until it ruptures or fractures into separate pieces. The original cross sectional area and gauge length are measured prior to conducting the test and the applied load and gauge deformation are continuously measured throughout the test. Based on the initial geometry of the sample, the engineering stress-strain behavior (stress-strain curve) can be easily generated from which numerous mechanical properties, such as the yield strength and elastic modulus, can be determined. A universal testing machine is utilized to apply the load in a continuously increasing (ramp) manner according to ASTM specifications. Finally, theoretical results are compared with these obtained from experiments where the nature of curves is found similar to each other. It is observed that there is a significant change of the value of n obtained with and without heat treatment it means the value of n should be determined for the heat treated condition of copper material for their applications in engineering fields.
Źródło:: International Journal of Applied Mechanics and Engineering; 2014, 19, 4; 687-698
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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