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Wyświetlanie 1-15 z 19
Tytuł:
Characteristics Of The Porous Body Sintered By Nano-Sized Fe-Cr-Al Alloy Powder
Charakterystyka porowatego korpusu spiekanego z nanometrycznego proszku stopu Fe-Cr-Al
Autorzy:
Lee, S.-I.
Lee, S.-H.
Gu, B.-U.
Lee, D.-W.
Kim, B.-K.
Powiązania:
https://bibliotekanauki.pl/articles/356635.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Fe-Cr-Al powder
metallic sponges
sintering temperature
oxidation resistance
proszek Fe-Cr-Al
proszek nanometryczny
temperatura spiekania
odporność na utlenianie
Opis:
Porous metal with uniform honeycomb structure was successfully produced by sintering using Fe-Cr-Al nano powder, which was prepared by the pulsed wire evaporation (PWE) in ethanol. Its process consisted of the several steps; 1) coating on the surface of polyurethane sponge with the liquid droplets generated from the ethanol-based slurry where the Fe-Cr-Al nano powders were uniformly dispersed, 2) heat treatment of debinding to remove the polyurethane sponge and 3) sintering of the porous green body formed by Fe-Cr-Al nano powders. The strut thickness of porous Fe-Cr-Al was increased by the increase of spraying times in ESP step. Also, The shrinkages and the oxidation resistance of the sintered porous body was increased with increase of sintering temperature. The optimal sintering temperature was shown to 1450°C in views to maximize the oxidation resistance and sinterability.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2B; 1275-1279
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact Characteristic According to the Structure of Crash Box at the Vehicle
Autorzy:
Min, B. S.
Cho, J. U.
Powiązania:
https://bibliotekanauki.pl/articles/355072.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum foam
crash box
impact characteristic
deformation
stress
internal energy
durability
Opis:
The crash box between a bumper and a car body in automobiles can reduce impacts for car bodies with a bumper at a low-speed collision by preventing the shocks. Also, this crash box is the part playing a very important role for the safety of vehicle and the reduction of repair cost, and many studies have been investigated for the performance. In this study, aluminum foam was inserted in an aluminum crash box to analyze the relationships of deformation, stress and internal energy. The compression characteristics are compared with six cases. In addition, the load due to displacement at experiment for a case is verified by modeling with finite elements and performing the structural analysis. As these study results for investigating characteristics of the crash box, it is thought that the effective designs of crash box to enhance the durability for collision are made possible.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2B; 1047-1050
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rigels Halili, Naród i jego pieśni. Rzecz o oralności, piśmienności i epice ludowej wśród Albańczyków i Serbów, Wydawnictwo Uniwersytetu Warszawskiego, Warszawa 2012, ss. 506
Autorzy:
k, Damian K u b i
Powiązania:
https://bibliotekanauki.pl/articles/705117.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Pamiętnik Słowiański; 2013, 63, 1-2
0078-866X
Pojawia się w:
Pamiętnik Słowiański
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heart-rate Monitoring System Design and Analysis Using a Nios II Soft-core Processor
Autorzy:
Lim, C. K.
Jambek, A.B.
Hashim, U.
Powiązania:
https://bibliotekanauki.pl/articles/226033.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pulse sensor
PPG
heart rate
FPGA
Nios II
Opis:
The heart rate of a person is able to tell whether they are healthy. A heart-rate monitoring device is able to measure or record the heart rate of a person in real time, whether it is an electrocardiogram (ECG) or a photoplethysmogram (PPG). In this work, a microprocessor system loaded with a heart-rate monitoring algorithm is implemented. The microprocessor system is the Nios II processor system, which interfaces with an analogue-to-digital converter (ADC) and a pulse sensor. A beat-finding algorithm is used in the microprocessor system for heart rate measurement. An experiment is carried out to analyse the functionality of the microprocessor system loaded with the algorithm. The results show that the detected heart rate is in the range of the average human being’s heart rate. The signal flow within the microprocessor system is observed and analysed using SignalTap II from Quartus’ software. Based on a power analysis report, the proposed microprocessor system has a total power dissipation of around 218.26 mW.
Źródło:
International Journal of Electronics and Telecommunications; 2016, 62, 3; 283-288
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leucocyte acid phosphatase and selected haematological indices in BLV infected cows
Autorzy:
Kaczmarczyk, E
Czarnik, U.
Bojarojc, B.
Walawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/2043884.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hematological index
cow
polymorphism
blood leucocyte
acid phosphatase
cattle
lysosomal enzyme
leucocyte
enzootic bovine leukemia
Źródło:
Journal of Applied Genetics; 1999, 40, 2; 93-101
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of organic waste material overgrown with Trichoderma atroviride as a control strategy for Sclerotinia sclerotiorum and Chalara thielavioides in soil
Autorzy:
Kowalska, B.
Smolinska, U.
Szczech, M.
Winciorek, M.
Powiązania:
https://bibliotekanauki.pl/articles/66092.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
organic material
waste material
application
Trichoderma atroviride
biological control
control strategy
Sclerotinia sclerotiorum
fruit pomace
Chalara thielavioides
soil
Opis:
The effect of granulated organic waste material overgrown with Trichoderma atroviride TRS25 on the survival of Sclerotinia sclerotiorum and Chalara thielavioides in the soil was investigated. Application of this material into the soil at a dosage of 1% (w/v) reduced the survival of S. sclerotiorum sclerotia to almost zero after 2 months of incubation. The sclerotia were parasitized by T. atroviride fungus multiplied on granulates. The detrimental effect of granulates on Ch. thielavioides was observed after 4 months of incubation. The granulates, with Trichoderma and without the fungus, caused a decrease of the pathogen population in soil. Trichoderma atroviride introduced into the soil as a conidia suspension did not decrease the amount of Ch. thielavioides but the fungus parasitized S. sclerotiorum sclerotia. After the addition of granulated waste material, an increase of bacteria, especially the Pseudomonas group in the soil was observed.
Źródło:
Journal of Plant Protection Research; 2017, 57, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design considerations of a linear generator for a range extender application
Autorzy:
Seo, U.
Riemer, B.
Appunn, A.
Hameyer, K.
Powiązania:
https://bibliotekanauki.pl/articles/141103.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
linear generator
free piston engine
range extender electric vehicle
Opis:
The free piston linear generator is a new range extender concept for the application in a full electric vehicle. The free piston engine driven linear generators can achieve high efficiency at part and full load which is suitable for the range extender application. This paper presents requirements for designing a linear generator deduced from a basic analysis of a free piston linear generator.
Źródło:
Archives of Electrical Engineering; 2015, 64, 4; 581-592
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of phenomenological model parameters using density dependent laws for prediction of mechanical response of cellular materials
Autorzy:
Butt, H. S. U.
Xue, P.
Hou, B.
Powiązania:
https://bibliotekanauki.pl/articles/200833.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cellular materials
aluminum foam
phenomenological model
energy absorption
materiały komórkowe
piana aluminiowa
modele fenomenologiczne
absorpcja energii
Opis:
Cellular materials have found wide-spread attention in structural applications involving impact energy absorption. The choice of the most suitable density of a cellular material, for a particular impact application, is based on its mechanical response, which may be obtained through experimental tests and/or models. A current study is focused on prediction of a mechanical response of a wide range of densities of a cellular material using available experimental data of very few densities. Best fitting-parameters of four selected phenomenological models, to fit the available experimental response of three distinct aluminum foam densities, are evaluated. The relationship between the best-fitting parameters and density of the foam is established by using two types of functions. The first function is based on a power law relationship between each parameter and foam density ρ, while the second function assumes each parameter as a linear combination of ρn and ρ, where n is any real number. The former function is found reasonable in the cases of both parameter interpolation and extrapolation while the latter is found reasonable for a parameter interpolation only. The findings of a current study emphasize for a conscious approach during selection of density dependent laws for phenomenological model parameters to avoid any erroneous or misleading design decision.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 1; 181-191
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 19

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