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Tytuł:
Modular transportation system with a three dimensional routeing
Autorzy:
Löffler, C.
Canders, W. R.
Powiązania:
https://bibliotekanauki.pl/articles/141161.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
3D-Linear Motor
passive switch
Steep turn
logistic
modular transportation system
Opis:
In intra-enterprise logistics and automation of manufacturing processes general a rising productivity by high flexibility is required. Existing transportation systems exclusively use two-dimensional track sections, because they can be served with standard drives. Because of these simple structures the transport speed is limited and thereby also the throughput. In this paper now a modular transportation system is presented which could reach higher speeds with a direct drive and the use of centrifugal force compensating curves. Simultaneously the system also can change the altitude. All this succeeds with the integration of three-dimensional track sections. Therefore a two piped guiding system with a long stator linear motor was designed. To combine the linear motor with the three dimensional track special stator elements were developed which allow a bending of the stator to follow the route course. The current work deals with the implementation of a mechanical passive switch, which is operated by the electromagnetic forces of the linear motor. So no additional mechanical actors or a separate electromagnetic system are necessary.
Źródło:
Archives of Electrical Engineering; 2015, 64, 4; 641-654
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photodynamic therapy of red and blue lights on Malassezia pachydermatis: an in vitro study
Autorzy:
Kim, W.R.
Bae, S.G.
Oh, T.H.
Powiązania:
https://bibliotekanauki.pl/articles/2087782.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dog
LEDs
PDT
Malassezia infection
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 1; 185-191
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chosen Aspects Of Investigations Of Solar Cells With The Laser Beam Induced Current Technique
Autorzy:
Chrobak, Ł. B.
Madej, W. R.
Maliński, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/220416.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nondestructive techniques
laser beam induced current
photovoltaics
silicon
solar cells
I-V characteristics
optical absorption coefficient spectra
Opis:
This paper presents maps of spatial distributions of the short circuit current Isc(x,y) and the open circuit voltage Uoc(x,y) of the investigated low cost solar cells. Visible differences in values of these parameters were explained by differences in the serial and shunt resistances determined for different points of solar cells from measurements of I–V characteristics. The spectral dependence of the photo voltage of solar cell is also shown, discussed and interpreted in the model of amorphous and crystal silicon.
Źródło:
Metrology and Measurement Systems; 2015, 22, 2; 241-250
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modified concept of permanent magnet excited synchronous machines with improved high-speed features
Autorzy:
May, H.
Palka, R.
Paplicki, P.
Szkolny, S.
Canders, W.-R.
Powiązania:
https://bibliotekanauki.pl/articles/140362.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pojazd elektryczny
magnes trwały
maszyna synchroniczna
osłabianie pola
electric vehicles
permanent magnet
synchronous machines
field weakening
optimal feeding
Opis:
Permanent magnet (PM) excited synchronous machines used in modern drives for electro-mobiles suffer in high speed regions from the limited battery-voltage. The field weakening requires designing machines with reduced power conversion properties or increasing the size of the power converter. A new concept of such a machine features PM excitation, single-tooth winding and an additional circumferential excitation coil fixed on the stator in the axial center of the machine. By the appropriate feeding of this coil, the amplitude of the voltage effective excitation field can be varied from zero to values above those of the conventional PM-machines. The capability of reducing the excitation field to zero is an important safety aspect in case of failing of the feeding convertor.
Źródło:
Archives of Electrical Engineering; 2011, 60, 4; 531-540
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of Cadmium using Alkaline-Treated Activated Carbon from Leucaena Leucocephala Biomass
Autorzy:
Ibrahim, W. M. H. W.
Sulaiman, Nurul Syuhada
Amini, Mohd Hazim Mohammad
Kadir, W. R. A.
Mohamed, Mazlan
Ramle, Sitti Fatimah Mhd
Bilgin, Ugur
Rahman, Wan
Powiązania:
https://bibliotekanauki.pl/articles/2125550.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
activated carbon
cadmium
Leucaena leucocephala
adsorption
Opis:
Water contamination that caused by heavy metals is a very common phenomenon in the industrial age. One of the popular way to treat metal contaminated water is by adsorption process using activated carbon as the adsorbent. This paper works on producing activated carbon by chemical means with impregnation ratios of NaOH:char (w/w) was predetermined at 1:1 (ACT1-1), 2:1 (ACT2-1) and 3:1 (ACT3-1) under activation temperature of 700°C. Considering the Leucaena leucocephala is a wildly, easy and fast grown species, with the availability throught the year, it was chosen to be used as the precursor. The properties of these activated carbons and its potential for cadmium removal from aqueus solution was analyzed. It was found that the highest surface area was recorded at 662.76 m²/g. Four parameters were studied which are contact time, the effect of pH, initial concentration of adsorbate and temperature. The equilibrium time was achieved in 40 min treatment at initial concentrations of 30 mg/l. The adsorbent exhibited good sorption potential for cadmium at pH 8.0 and equilibrium temperature of 30℃. Based on the results, this study had proved that activated carbon from Leucaena leucocephala biomass have the good potential to be used for removal of cadmium from wastewater.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 3; 1033--1036
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Żydzi i Żydówki jako podmioty postkolonialne w świetle dążeń emancypacyjnych kobiet w Galicji (1890–1914)
Autorzy:
k, Angelique L e s z c z a w s k i-S c h w e r
Powiązania:
https://bibliotekanauki.pl/articles/702031.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Historyka studia metodologiczne; 2012, 42
0073-277X
Pojawia się w:
Historyka studia metodologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determinanty natychmiastowych stóp zwrotu z akcji spółek Skarbu Państwa dokonujących pierwotnych ofert publicznych
Autorzy:
I, Leszek C Z A P I E W S K
I, Tomasz J E W A R T O W S K
I, Michał K A Ł D O Ń‑ S K
A, Jacek M I Z E R K
Powiązania:
https://bibliotekanauki.pl/articles/701809.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:
Ekonomista; 2014, 4
0013-3205
2299-6184
Pojawia się w:
Ekonomista
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Verification of the Calculation Assumptions Applied to Solutions of the Acoustic Measurements Uncertainty
Autorzy:
Batko, W.
Bal, R.
Powiązania:
https://bibliotekanauki.pl/articles/176297.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmental noise control
statistical analysis
acoustic measurement
uncertainty
Opis:
The assessment of the uncertainty of measurement results, an essential problem in environmental acoustic investigations, is undertaken in the paper. An attention is drawn to the – usually omitted – problem of the verification of assumptions related to using the classic methods of the confidence intervals estimation, for the controlled measuring quantity. Especially the paper directs attention to the need of the verification of the assumption of the normal distribution of the measuring quantity set, being the base for the existing and binding procedures of the acoustic measurements assessment uncertainty. The essence of the undertaken problem concerns the binding legal and standard acts related to acoustic measurements and recommended in: ‘Guide to the expression of uncertainty in measurement’ (GUM) (OIML 1993), developed under the aegis of the International Bureau of Measures (BIPM). The model legitimacy of the hypothesis of the normal distribution of the measuring quantity set in acoustic measurements is discussed and supplemented by testing its likelihood on the environment acoustic results. The Jarque-Bery test based on skewness and flattening (curtosis) distribution measures was used for the analysis of results verifying the assumption. This test allows for the simultaneous analysis of the deviation from the normal distribution caused both by its skewness and flattening. The performed experiments concerned analyses of the distribution of sound levels: LD, LE, LN, LDWN, being the basic noise indicators in assessments of the environment acoustic hazards.
Źródło:
Archives of Acoustics; 2014, 39, 2; 199-202
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe kierunki i rozwiązania w konstrukcji zimnokomorowych maszyn ciśnieniowych nowej generacji
New Trends and Solutions in the Design of Cold-Chamber Die Casting Next-Generation Machines
Autorzy:
Kowalczyk, W.
Dańko, R.
Powiązania:
https://bibliotekanauki.pl/articles/381001.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
odlewnictwo ciśnieniowe
maszyna ciśnieniowa
stop aluminium
pressure die casting
die casting machine
aluminium alloy
Opis:
W publikacji poddano analizie aktualny stan oraz kierunki rozwoju rozwiązań konstrukcyjnych maszyn ciśnieniowych z zimną komorą prasowania, decydujących jednocześnie o perspektywicznym rozwoju tych maszyn oraz technologii odlewania ciśnieniowego. Skupiono się na głównych zespołach funkcjonalnych obejmujących układy: napędu hydraulicznego, zwierania i ryglowania, oraz prasowania w maszynach znanych firm, obecnych na rynku europejskim.
The paper presents the current status and development trends of design solutions in cold chamber die casting machines. Authors focuses on the major functional elements of machines systems: a hydraulic drive, closing and locking systems and pressing system, in machines from known on the European market producers.
Źródło:
Archives of Foundry Engineering; 2013, 13, 3 spec.; 83-88
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement system for determination of supercapacitor equivalent parameters
Autorzy:
Kopka, R.
Tarczyński, W.
Powiązania:
https://bibliotekanauki.pl/articles/221574.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supercapacitor
measurement system
equivalent series resistance
equivalent capacitance
Opis:
In this paper a measurement system for determination of supercapacitor equivalent parameters is proposed. Specific properties of materials used for supercapacitor construction require some advanced tools and measurement procedures to be applied during tests. The measurement system allows to measure values of equivalent parameters by both the DC and AC method whilst keeping appropriate time criteria required by this type of devices. Furthermore, in this paper the most relevant properties and measurement capabilities of the proposed system are described as well as some exemplary values of the supercapacitor equivalent parameters measured experimentally are presented.
Źródło:
Metrology and Measurement Systems; 2013, 20, 4; 581-590
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laminar flow past the bottom with obstacles – a suspension approximation
Autorzy:
Wojnar, R.
Bielski, W.
Powiązania:
https://bibliotekanauki.pl/articles/199808.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Stokes flow
Einstein’s suspension
Brinkman’s suspension
non-uniform viscosity
velocity distribution
wastes
plants on the bottom
przepływ Stokesa
lepkość
rozkład prędkości
odpady
Opis:
From Albert Einstein’s study (1905) it is known that suspension introduced to a fluid modifies its viscosity. We propose to describe the influence of obstacles on the Stokesian flow as a such modification. Hence, we treat the fluid flow through small obstacles as a flow with suspension. The flow is developing past the plane bottom under the gravity force. The spatial distribution of suspension concentration is treated as given, and is regarded as an approximation of different obstacles which modify the fluid flow and change its viscosity. The different densities of suspension are considered, beginning of small suspension concentration until 40%. The influence of suspension concentration on fluid viscosity is analyzed, and Brinkman’s formula as fitting best to experimental data is applied.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 685-695
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł

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