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Wyszukujesz frazę "Becker, M." wg kryterium: Autor


Tytuł:
Integracja infrastruktury dla stałej i mobilnej komunikacji w nowoczesnej kopalni głębinowej
Integration of fixed and mobile communication backbones in modern underground mines
Autorzy:
Becker, F.
Brinckman, M.
Utikal, J.
Powiązania:
https://bibliotekanauki.pl/articles/187654.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
Becker Mining System
kopalnia głębinowa
podziemna komunikacja bezprzewodowa
underground wireless communication
ungerground mining
Opis:
Współcześnie pewna i niezawodna komunikacja elektroniczna stała się koniecznością. Ten trend jest również aktualny w sektorze górnictwa i prowadzi do narastającego popytu na zaawansowane podziemne sieci transmisyjne w górnictwie głębinowym. Występują trzy podstawowe rodzaje infrastruktur komunikacyjnych: kable miedziane, kable światłowodowe oraz bezprzewodowe sieci typu LAN. Becker Mining System oferuje zaawansowane technologicznie rozwiązania systemowe do zastosowania w łączności bezprzewodowej w zakresie częstotliwości radiowej. Oferowane rozwiązania nie są wprost kompatybilne z warunkami jakie stwarza eksploatacja kopalin w podziemiach kopalnianych. W artykule przedstawiono sposób w jaki Becker Mining System integruje stałe i mobilne struktury komunikacyjne.
Reliable electronic communication is a necessity these days. This trend is also true in the mining sector and causes an increasing demand for advanced underground transmission networks in deep mining. There are three basic types of communication backbones: copper cables, light pipes and wireless LAN networks.Becker Mining System offers state-of-the-art technological solutions to be used in wireless communication in the range of radio frequency. The offered solutions are not directly compatible with the conditions specific for mining exploitation in the underground of mines. The article presents the method by Becker Mining System to integrate fixed and mobile communication backbones.
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2010, R. 48, nr 8, 8; 39-48
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure and Properties of Spark Plasma Sintered Al-Zn-Mg-Cu Alloy
Autorzy:
Becker, H.
Dopita, M.
Stráská, J.
Málek, P.
Vilémová, M.
Rafaja, D.
Powiązania:
https://bibliotekanauki.pl/articles/1402091.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.20.Fw
81.40.-z
81.70.-q
61.43.Gt
81.20.Ev
62.20.M-
Opis:
The microstructure of an aluminum alloy containing 53 wt% Zn, 2.1 wt% Mg and 1.3 wt% Cu as main alloying elements has been studied with the focus on the precipitation behavior during the spark plasma sintering process. The starting material was an atomized Al-Zn-Mg-Cu powder with the particle size below 50 μm. The particles showed a solidification microstructure from cellular to columnar or equiaxed dendritic morphology with a large fraction of the alloying elements segregated in form of intermetallic phases, mainly (Zn,Al,Cu)₄₉Mg₃₂ and Mg₂(Zn,Al,Cu)₁₁, at the cell and dendrite boundaries. The microstructure of the sintered specimens followed the microstructure of the initial powder. However, Mg(Zn,Al,Cu)₂ precipitates evolve at the expense of the initial precipitate phases. The precipitates which were initially continuously distributed along the intercellular and interdendritic boundaries form discrete chain-like structures in the sintered samples. Additionally, fine precipitates created during the sintering process evolve at the new low-angle boundaries. The large fraction of precipitates at the grain boundaries and especially at the former particle boundaries could not be solved into the matrix applying a usual solid solution heat treatment. A bending test reveals low ductility and strength. The mechanical properties suffer from the precipitates at former particle boundaries leading to fracture after an outer fiber tensile strain of 3.8%.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 602-605
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Eksploatacja samochodu w warunkach zimowych
Operation of the car in winter conditions
Autorzy:
Becker, M.
Czech, P.
Gustof, P.
Turoń, K.
Jędrusik, D.
Urbańczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/310641.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
eksploatacja samochodu
problemy eksploatacji zimowej
budowa samochodów
car exploitation
winter operating problems
car construction
Opis:
Liczba samochodów w polskich rodzinach z roku na rok zwiększa się. Pośród użytkowników pojazdów znajduje się grupa, która nie posiada wystarczającej wiedzy dotyczącej właściwej eksploatacji samochodu, szczególnie w warunkach zimowych. Właśnie do tej grupy skierowany jest niniejszy artykuł. Scharakteryzowano w nim w sposób skrótowy informacje dotyczące płynów eksploatacyjnych, zużycia paliwa w okresie zimowym, użytkowania pojazdów wyposażonych w instalację gazową, ogumienia pojazdów. Podano również praktyczne porady dotyczące eksploatacji samochodu w okresie zimowym.
The number of cars in Polish families is growing year by year. Among the vehicle users there is a group that does not have sufficient knowledge about the proper operation of the vehicle, especially under the conditions of the weather. This article is addressed to this group. It is characterized by brief information on operating fluids, fuel consumption in winter, use of vehicles equipped with gas system, tires of vehicles. They are also given practical advice on operating a car in winter.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 12; 701-708, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Angular Differential Cross-Sections for Electron Transfer in Collisions between Proton and He$\text{}^{+}$(1s) Ions
Autorzy:
Bhattacharyya, S.
Pathak, K.
Becker, A.
Faisal, F. H. M.
Powiązania:
https://bibliotekanauki.pl/articles/1952747.pdf
Data publikacji:
1996-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
34.70.+e
34.40.+n
Opis:
Angular differential cross-sections for the formation of H, as a result of electron capture by proton from He$\text{}^{+}$(1s) at the centre-of-mass energies from 4 to 24 keV, are calculated using distorted wave Coulomb-Born approximation. The total interaction potentials in the prior-interaction channel and in the post-interaction channel are considered. Coulomb boundary conditions are taken care of with the proper choice of the perturbation potentials in both the prior and the post channels. A prior-post discrepancy is noted. Existing theoretical results are presented along with the present results.
Źródło:
Acta Physica Polonica A; 1996, 90, 6; 1143-1153
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Atoms and Molecules in a Strong Laser Field
Autorzy:
Busuladžić, M.
Gazibegović-Busuladžić, A.
Hasović, E.
Milošević, D.
Becker, W.
Powiązania:
https://bibliotekanauki.pl/articles/1791210.pdf
Data publikacji:
2009-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.80.Rv
32.80.Rm
42.50.Hz
Opis:
We investigate high-order above-threshold ionization of diatomic molecules and their companion atoms by linearly polarized strong laser field using improved molecular (atomic) strong-field approximation. The most noticeable feature of the molecular spectra is the existence of minima that are absent in atomic case. We have derived an analytical formula for their position which is independent of the molecular symmetry.
Źródło:
Acta Physica Polonica A; 2009, 116, 4; 516-518
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geokinematics of Central Europe: new insights from CERGOP-2/Environment Project
Autorzy:
Caporali, A.
Becker, M.
Fejes, I.
Gerhatova, L.
Ghitau, D.
Grenerczy, G.
Hefty, J.
Medac, D.
Milev, G.
Mojzes, M.
Mulic, M.
Powiązania:
https://bibliotekanauki.pl/articles/224596.pdf
Data publikacji:
2007
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
GPS
geodezja
geodynamika w Europie Centralnej
tektonika w Europie Centralnej
naprężenia i odształcenia w Europie Środkowej
GPS Geodesy
Central European Geodynamics
Central European Tectonics
Stress and Strain in Central Europe
Opis:
The CERGOP2 project funded by the European Union from 2003 to 2006 under the 5th Framework Programme benefits from repeated measurements of the coordinates of epoch and permanent GPS stations forming the CEGRN network in Central Europe, starting 1994. We report on the results of the systematic processing of the available data up to 2005. The analysis work has yielded the velocities of some 60 sites, covering a variety of Central European tectonic provinces, from the Adria indenter to the Tauern window, the Pannonian basin, the Vrancea Seismic Zone and the Carpathian Mountains. The estimated velocities define kinematical patterns which outline, with varying spatial resolution depending on the station density and history, the present day tectonic flow in Central Europe.The CEGRN data show that the majority of active contraction originating from the Eurasia Nubia plate boundary and the microplate between them is taken up primarily in the Eastern Alps, the Dinarides, and the Pannonian Basin. After removal from the ITRF2000 velocities of a rigid rotation accounting for the mean motion of stable Europe, the residual velocities have random orientations with 0.3 mm/yr scatter. This Iow figure provides an upper estimate for the level of rigidity of the European Platform. A 2.3 mm/yr north-south oriented convergence rate is implied by our data between Adria and the Southern Alps, and a narrow - -60 km wide- contraction zone in the Southern Alps is identified, consistently with earlier results. An eastward extrusion north of the contraction zone corresponds with the extension of the Tauern Window. In the southeastern boundary of the microplate, 4-4.5 mm/yr motion of Adria decreases to -1 mm/yr through the microplate, its boundary, and the Dinarides mountain range towards the southwestern part of the Pannonian Basin. Our data suggest that if the Pannonian Basin is subject to deformation, then it is most likely to be compressional than extensional. We conclude that compression and associated contraction due to the Adria collision with the Alps and the Dinarides is likely to fade away in the Western and Northern Carpathians, where our velocities and strain rates show no significant deformation.
Źródło:
Reports on Geodesy; 2007, z. 2/83; 7-46
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary Central European intraplate velocities from CEGRN campaigns 1994 to 2005
Autorzy:
Drescher, R.
Becker, M.
Schoenemann, E.
Powiązania:
https://bibliotekanauki.pl/articles/224551.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
CERGOP
CEGRN
prędkości poziome
Central European Regional Geodynamic Project
velocity estimations
horizontal velocities
Opis:
Within the Central Europe Regional Geodynamics Project (CERGOP) for the establishment of a high precision reference frame CEGRN (Central European GPS Geodynamic Reference Network) eight GPS campaign solutions since 1994 are available for velocity estimation. They were used to compute preliminary station velocities in the ITRF2000. This paper reports not only on the results and some comparisons with former solutions published by the CERGOP group but also on the improved options available for velocity estimation with version 5.0 of Bernese GPS Software.
Źródło:
Reports on Geodesy; 2006, z. 1/76; 47-54
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reference frame and model improvements in CEGRN
Autorzy:
Drescher, R.
Becker, M.
Powiązania:
https://bibliotekanauki.pl/articles/224606.pdf
Data publikacji:
2007
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
CEGRN
Europa Środkowa
ruchy tektoniczne
system GPS
Central Europe
tectonic activity
GPS system
Opis:
The CEGRN Consortium decided to reprocess all GPS campaigns according new compiled guidelines. In the contribution these guidelines are introduced. Furthermore it was tested, whether they are also suitable for the first campaigns with their paticularities.
Źródło:
Reports on Geodesy; 2007, z. 2/83; 47-54
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of a high-resolution real-time-capable 3D SONAR camera for deep sea operation
Autorzy:
Ehrhardt, M.
Becker, F. J.
Speicher, D.
Fonfara, H.
Hewener, H.
Degel, C.
Tretbar, S.
Powiązania:
https://bibliotekanauki.pl/articles/332135.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
2D array
matrix array
3D imaging
beamforming
Opis:
Within this work we present a first experimental setup of a high-resolution real-timecapable 3D sonar camera system for deep sea operation. Since we are currently in the development process, the focus of this work is on the transmission aspects of the camera. Following publications will include the receiving aspects as well as the first phantom reconstructions. The system consists of a 1024 element matrix array antenna, together with a 128 channel beamforming system including a 1:8 multiplexing device for each channel. The camera is supposed to deliver volumetric images within a range of up to 15 m in a deep sea environment up to 6000 m depth. The antenna provides the advantage of an adjustable defocused transmitting sound field. This allows dynamic control of the field of view, and an increase of the image contrast for a specific region.
Źródło:
Hydroacoustics; 2016, 19; 101-110
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Guidelines for the coordinated enhancement of the maritime position, navigation and time data system
Autorzy:
Engler, E.
Hoppe, M.
Ritterbusch, J.
Ehlers, T.
Becker, C.
Ehrke, K.-C.
Callsen-Bracker, H.
Powiązania:
https://bibliotekanauki.pl/articles/135132.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
standardized PNT data products
guidelines
requirements
scalability
integrity
reliability
resilience
Opis:
Reliable knowledge of a ship’s position and movement in relation to other traffic participants and obstacles is a fundamental requirement for navigation and avoiding collisions and groundings. Consequently, the onboard provision of resilient position, navigation and time data (PNT) is emphasized by the International Maritime Organization’s (IMO) e-navigation strategy, solution S3 “Improved reliability, resilience and integrity of bridge equipment and navigation information” and by the assigned risk control option RCO5 “Improved reliability and resilience of onboard PNT systems”. An initial step towards resilient PNT has been realized by the maritime community with the development of the performance standards for shipborne multi-system radionavigation receiver equipment (MRR). This MRR performance standard (PS) supports the full use of data coming from current and future radionavigation systems and services. Consequently, the combined use of several global navigation satellite systems (GNSS) and the additional use of space based augmentation systems (SBAS) as well as optional terrestrial radionavigation systems (e.g. eLoran or R-Mode) will be supported to increase the performance of positioning and timing. As a second step, the development of guidelines for an onboard PNT (data processing) unit has been identified as supplementary and necessary. The starting point is the onboard use of a combination of GNSS receivers and autarkic systems (e.g. radar, gyro, echosounders with bathymetric data) for a comprehensive provision of required PNT data. Redundancy in the available data enables the application of integrity monitoring functions to evaluate the current usability of safety-critical data and components. The aim of the guidelines is the specification of data processing rules towards the resilient provision of standardized PNT data and integrity information. For this purpose, a modular architecture for an onboard PNT system is introduced and scaled to the need for data input as well as the performance of data output.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 44-53
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of CEGRN 2005 as the eighth of CERGOP observing campaigns
Autorzy:
Hefty, J.
Gerhatova, L.
Stangl, G.
Haslinger, C.
Krauss, S.
Becker, M.
Drescher, R.
Grenerczy, G.
Kratochvil, R.
Liwosz, T.
Powiązania:
https://bibliotekanauki.pl/articles/224554.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
CERGOP
CEGRN
obserwacje geodezyjne
Central European Regional Geodynamic Project
geodetic observation
Opis:
Strategy of analysis and results from solution of CEGRN epoch campaign in 2005 Combined solution of CEGRN 2005 based or individual solutions from six an: centres and its comparison with CEGRN 2003 coordinates. Time evolution of coordinates at some long-term observed CEGRN sites obtained during epoch camp since 1994 and the related problems.
Źródło:
Reports on Geodesy; 2006, z. 1/76; 39-46
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of selected soil parameters on amino acid profile in Stellaria media
Autorzy:
M. Dziągwa-Becker, Magdalena
Kalitowska, Olga
A. Oleszek, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/2168198.pdf
Data publikacji:
2016-12-30
Wydawca:
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:
free amino acids
LC-MS/MS
soil organic matter
soil quality
common chickweed
Opis:
The study investigates the relationship between soilsthat vary for different basic physicochemical parameters (pH,phosphorus and potassium content, granulometric compositionand soil organic matter content) and the free amino acids content of Stellaria media. According to some research, plant aminoacid profile is a good indicator of the condition of the soils onwhich plants are grown. In this experiment, a rapid and sensitiveliquid chromatography coupled with tandem mass spectrometry(LC-MS/MS) method was used for the identification and quantification of nineteen proteinogenic amino acids in Stellaria mediasamples, which is a very common weed found worldwide. Significant linkage was found between the soil parameters and Stellariamedia amino acid content. Garden soil is the most favourable soilfor amino acid content. Glutamine, glutamic and aspartic acid arethe most abundant amino acids in Stellaria media grown on allthree tested soils.
Źródło:
Polish Journal of Agronomy; 2016, 27; 32-37
2081-2787
Pojawia się w:
Polish Journal of Agronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CERGOP-2 Project activities of Bulgaria
Autorzy:
Milev, G.
Vassileva, K.
Becker, M.
Powiązania:
https://bibliotekanauki.pl/articles/224498.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
CERGOP
geodynamika
CEGRN
GPS
system pozycjonowania obiektów
geodynamics
velocity estimations
Opis:
This paper summarizes the recent works with respect to the CERGOP-2 project tasks. The main activity was the implementation of the Working Package "Geodynamics of Balkan Peninsula". Major efforts were taken to the maintenance of the operation of two permanent GPS stations in Bulgaria and to arrange for the data transmission to the CERGOP Data Centre in Graz. The CEGRN GPS campaigns of 2003 and 2005 were analyzed together with additional Balkan Peninsula stations. New results on coordinates and velocities for this Balkan Peninsula subnet of CEGRN are computed and will be presented and discussed. The accomplished works on the monograph "Geodynamics of Balkan Peninsula" with the preparation of the manuscripts and the main content of the findings will be outlined.
Źródło:
Reports on Geodesy; 2006, z. 1/76; 111-118
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł

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