Wyniki wyszukiwania - BazTech

1

Synthesis of Generalised Threshold Gates and Multi Threshold Threshold Gates

Nikodem M., Bawiec M. A., Biernat J.

International Journal of Electronics and Telecommunications

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2012

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Vol, 58, No. 1

49-54

EN

This paper presents synthesis algorithms for Generalised and Multi Threshold Threshold Gates. Both algorithms can be applied to generate circuit structures for arbitrary Boolean functions. We present gate's formal models, synthesis algorithms and complexity estimations of the resulting structures.

2

Model kształcenia eksploatatorów siłowni okrętów wojennych

Biernat J., Piaseczny L.

Zeszyty Naukowe / Akademia Morska w Szczecinie

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2008

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nr 15 (87)

150-167

3

Minimum logic depth modulo 2n+1 adders

Biernat J., Jabłoński J.

Metody Informatyki Stosowanej

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2008

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nr 3 (Tom 16)

41--55

EN

The propagation of re-entrant carry reduces the speed of modulo 2n+1 addition. Two efficient solutions known to date rely on parallel generation of carries in prefix structures. The TPP is a modified parallel-prefix adder. The ELMMA adder utilizes the idea of parallel updating of sum bits due to carry propagation. The architecture of modulo 2n+1 adder of the less logic depth than the TPP and ELMMA designs and thus potentially faster is proposed.

4

Optymalizacja warunków oznaczania pozostałości rozpuszczalników w substancji farmaceutycznej metodą chromatografii gazowej

Biernat J., Gołębiewski P., Groman A.

Przemysł Chemiczny

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2007

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T. 86, nr 8

751-755

5

Influence of beta-Cyclodextrin on Coupling Reactions of o-Nitrobenzenediazonium Salt with Pyrrole

Jamrógiewicz M., Biernat J.

Polish Journal of Chemistry

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2006

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Vol. 80, nr 5

753-757

EN

The influence of beta-cyclodextrin on o-nitrobenzenediazonium salt coupling with pyrrole has been studied analyzing the yield and products distribution.

6

Zastosowanie mikrosorpcji na stałym sorbencie (Solid Phase Microextraction, SPME) w analizie powietrza. Metodologia i pomiary na stanowiskach pracy

Kozieł J., Pawliszyn J., Legęć E., Mrówczyńska E., Podsiadło E., Biernat J., Jarosz M.

Chemia i Inżynieria Ekologiczna

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2001

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Vol. 8, nr 2-3

159-175

PL

Mikrosorpcja na stałym sorbencie (solid phase microextraction, SPME) może eliminować wiele niedogodności konwencjonalnych metod analitycznych dzięki połączeniu kilku etapów postępowania: pobierania próbek, ich zagęszczania i bezpośredniego podawania do standardowego dozownika chromatografu gazowego. Od początku lat dziewięćdziesiątych SPME jest stosowana do pobierania próbek i analiz środowiskowych. W niniejszej pracy przedstawiono podstawy wybranych postępowań analitycznych z użyciem SPME mających na celu analizę powietrza na zawartość lotnych związków organicznych (LZO) - zarówno za pomocą testów chwilowych, jak i uśrednionych pomiarów. Opisane metody zastosowano do analizy powietrza w wybranych pomieszczeniach technologicznych na Wydziale Chemicznym Politechniki Warszawskiej. Zakres mierzonych stężeń wynosił od 0,01 J.lg dm-3 dla dekanu do 22,27 J.lg dm-3 dla toluenu. Otrzymane wyniki porównano z wynikami pomiarów przeprowadzonych metodami tradycyjnymi, w których etap pobierania próbek polegał na sorpcji LZO na węglu aktywnym. Stwierdzono, że metoda mikrosorpcji na stałym sorbencie, dzięki swej czułości i prostocie może być stosowana jako technika pomiarowa alternatywna w stosunku do metod konwencjonalnych.

EN

Solid Phase Microextraction (SPME) can eliminate many common inconveniences associated with conventional analytical methods thanks to the combining of sampling, preconcentration of analytes and direct sample introduction into a standard injector of gas chromatograph. Since early I990s SPME has been used for sampling and in environmental analysis. In this research, the theoretical background of selected analytical SPME procedures used for sampling and determination of volatile organic compounds (VOC) in air are presented. These protocols include spot and time-weighted average sampling. Described methods were applied to the air analysis in selected technological laboratories in the Faculty of Chemistry, Warsaw University of Technology. Concentrations of the determined compounds varied from [formula] (for decane) to [formula] (for toluene). The obtained results were compared with those associated with the use of the conventional method, where sampling was performed by sorption of the analytes on activated carbon. Because of its sensivitivity and simplicity, the SPME technique can be used as the alternative to conventional methods.

7

Terraces of the Bystrzyca river valley, Middle Sudetes, and their deformation along the Sudetic Marginal Fault

Krzyszkowski D., Biernat J.

Geologia Sudetica

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1998

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Vol. 31, nr 2

241-258

EN

There are three stages in the evolution of the Bystrzyca river valley, dated to the Pliocene, the Early to late Middle Pleistocene, and the late Middle Pleistocene to recent. The Pliocene landscape was flat to hilly, with a weakly developed margin of the mountains. The valleys were shallow and wide, most probably with sinuous rivers, and are today represented by the 100-120 m high terrace. The scarp of the Sudetic Marginal Fault and the mountain landscape with deeply incised valleys were not formed until the Early Pleistocene tectonic phase, during which the uplift was about 60-70 m. The late Middle to Late Pleistocene stage of the valley development may be subdivided into several sub-stages, during each of which, one of three morphogenetic factors, namely fluvial activity, glacial erosion and sedimentation and tectonic uplift, prevailed. Five fluvial terraces have been found, one formed before glaciation and the other four during the post-glacial times. The valley was glaciated only once, during the early Saalian (Odranian) stage. The total postglacial uplift was about 40-50 m and fluvial activity that time was influenced by varying uplift rates. At first, erosion prevailed due to strong glacio-isostatic uplift. Then, it diminished quickly and was replaced by more localised tectonic uplift, which decreased with time. As a result, fluvial activity in the mountains and in the foreland became different, as is highlighted by the increased thickness of fluvial deposits in the foremoutain zone, the rapid change of terrace height, formation of a distinct, 25-30 m high, fault scarp along the Sudetic Marginal Fault, and the increased erodibility along the fault lines.