Wyniki wyszukiwania - BazTech

1

Load-balanced route discovery for mobile ad hoc networks

Abolhasan M., Lipman J., Wysocki T. A.

Journal of Telecommunications and Information Technology

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2006

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nr 1

38-45

EN

This paper presents flow-aware routing protocol (FARP), a new routing strategy designed to improve load balancing and scalability in mobile ad hoc networks. FARP is a hop-by-hop routing protocol, which introduces a flow-aware route discovery strategy to reduce the number of control overheads propagating through the network and distributes the flow of data through least congested nodes to balance the network traffic. FARP was implemented in GloMoSim and compared with AODV. To investigate the load distribution capability of FARP new performance metrics were introduced to measure the data packet flow distribution capability of the each routing protocol. The simulation results obtained illustrate that FARP achieves high levels of throughput, reduces the level of control overheads during route discovery and distributes the network load more evenly between nodes when compared to AODV. This paper also describes a number of alternative strategies and improvements for the FARP.

2

Przepracowane oleje silnikowe - zagrożenie dla środowiska czy ich recycling? Cz. 2

Lipman J., Kolbuch P., Szablewski Z.

Paliwa, Oleje i Smary w Eksploatacji

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2000

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R. 9, nr 75

8-11

EN

Used oils could create a serious for the natural environment, but they could be a good raw material source for lubricating oils. A selective collection of used oils and waste-free regenerative recycling process allow for recovery of about 60% of basic oils, e.g. engine oils. In this publication mechanism and chemism of changes taking place in mineral engine oils when they are being used are discussed. The regenerative possibilities allow for full conditioning and industrial utilization of used oils due to obtaining engine oils with technical specifications not lower than the same of engine oils obtained directly from crude oil.

3

Przepracowane oleje silnikowe - zagrożenie dla środowiska czy ich recycling? Cz. 1

Lipman J., Szablewski Z., Kolbuch P.

Paliwa, Oleje i Smary w Eksploatacji

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2000

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R. 9, nr 74

14-17

EN

Used oils could create a serious threat for the natural environment, but they could be a good raw material source for lubricating oils. A selective collection of used oils and waste-free regenerative recycling process allow for recovery of about 60% of basic oils, e.g. engine oils. In this publication mechanism and chemism of changes taking place in mineral engine oils when they are being used are discussed. The regenerative possibilities allow for full conditioning and industrial utilization of used oils due to obtaining engine oils with technical specifications not lower than the same of engine oils obtained directly from crude oil.

4

The study of metal-humic catalysts in the desulphurization process of tail gases.

Więckowska J., Martyniuk H., Lipman J.

Prace Naukowe Instytutu Chemii i Technologii Nafty i Węgla Politechniki Wrocławskiej. Konferencje

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1999

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Vol. 9, nr 56

379-382

EN

Metal-humic catalysts and adsorbents were used in the dry desulphurization process of gases. The active phase of these caalysts were various metals precipitated on the carbon carrier. The desulphurization process was carried out at temperatures of 20, 300 and 450 C. The catalysts and adsorbents before and after desulphurization process were studied by thermal analysis using the Perkin-Elmer analyzers (DTA-7 and TGA-7). The additional endothermic peaks are present on the DTA curves of catalysts and adsorbents after desulphurization process. The weigh loss on the TG curves can be observed for the catalysts in the temperature range from 600 to 1000 C and for adsorbents up to 500 C. Propably, it is connected with sulphur compounds formed and the decomposition of these structures at the higher temperatures. The formation of the sulphur compounds may cause the deactivation of the catalysts studied. The thermal analysis may allow the evaluation of thermostability of compound formed between sulphur dioxide and carbon carrier or active phase of catalysts during the desulphurization process of gases.

PL

W procesie suchego odsiarczania gazów zastosowano katalizatory i adsorbenty matalo-huminowe. Aktywną fazą tych katalizatorów były różne metale wytrącone na nośniku węglowym. Proces odsiarczania był prowadzony w temperaturach 20, 300 i 450 C. Katalizatory i adsorbenty przed i po procesie odsiarczania były badane za pomocą analizy termicznej, z zastosowaniem analizatorów Perkin-Elmera (DTA-7 i TGA-7). Dodatkowe piki endotermiczne występują na krzywych TG dla katalizatorów w zakresie temperatur od 600 do 1000 C i dla adsorbentów w zakresie do 500 C. Prawdopodobnie jest to związane z utworzonymi siarkowymi związkami chemicznymi oraz z rozkładem tych struktur w wyższych temperaturach. Utworzenie związków siarkowych powoduje dezaktywację badanych katalizatorów. Analiza termiczna może pozwolić na ocenę termostabilności związku tworzonego pomiędzy dwutlenkiem siarki i nośnikiem węglowym lub fazą aktywną katalizatorów w czasie procesu odsiarczania gazów.

5

Oczyszczanie gazów spalinowych i odlotowych zawierających dwutlenek siarki - badania laboratoryjne

Więckowska J., Martyniuk H., Lipman J.

Przemysł Chemiczny

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1998

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T. 77, nr 6

224-226

6

Zastosowanie produktów energochemicznej przeróbki węgla brunatnego w procesie adsorpcji dwutlenku siarki

Martyniuk H., Więckowska J., Lipman J.

Karbo

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1998

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Nr 4

155-160

PL

Badaniom poddano dwie odmiany petrograficzne węgli brunatnych: ziemisty i ksylitowy. Węgle te karbonizowano w temperaturach 500-900st. C i poddawano modyfikacji chemicznej. Tak przygotowane materiały węglowe zastosowano jako adsorbenty dwutlenku siarki. Zaadsorbowany na tych karbonizatach S02 ulegał całkowitej desorpcji do temperatury 200st. C. Stwierdzono, że adsorpcja S02 na badanych materiałach węglowych zależy nie tylko od wielkości ich powierzchni właściwej, ale w dużej mierze od charakteru tej powierzchni.

EN

Two petrographic forms of brown coals: smudge coal and xylite coal were examined. These coals were carbonised in temperatures 500-900st.C and chemically modifled. Coal materials prepared in such a way were applied as adsorbents of sulphur dioxide. S02 adsorbed on these carbonisates was undergone to a total desorption in temperature 200oC. It was stated that the SO(2)z adsorption on examined coal materials depended not only from their specific surface but also to large extent from the character of that surface.