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1

Prezentacje Ośrodków Naukowo-Badawczych: Zakład Elektrochemii i Podstaw Technologii Instytut Chemii Przemysłowej

100%
Czerwiński A.
Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych
|
2008
|
issue 3
61
2

Prezentacje Ośrodków Naukowo-Badawczych: Pracownia Elektrochemicznych Źródeł Energii Wydziału Chemii, Uniwersytet Warszawski

100%
Czerwiński A.
Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych
|
2008
|
issue 3
60
3

Przegląd technologii ogniw paliwowych. Typy ogniw paliwowych

64%
Piela P., Czerwiński A.
Biuletyn Polskiego Stowarzyszenia Wodoru i Ogniw Paliwowych
|
2008
|
issue 3
21-30
4
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Stability of technetium in the moderate oxidation states in acidic media

64%
Chotkowski M., Czerwiński A.
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
|
2016
|
vol. 71
|
issue 1
EN
Technetium is one of the most important radionuclides in the spent nuclear fuel in context of reprocessing, storage and long term disposal. Spectroelectrochemical studies on the redox behavior of this element are presented and possible pathways of pertechnetate ions reduction are discussed. The stability of technetium (III/IV) species are discussed.
5
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Noise analysis of the longitudinal paper cutting machine in the context of declaration of compliance of the machinery

64%
Dziechciowski Z., Czerwiński A.
Czasopismo Techniczne
|
-
PL
Noise analysis of the longitudinal paper cutting machine in the context of declaration of compliance of the machinery
6
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Influence of boundary conditions on the natural frequencies and the stability regions of the hydraulic pipes

64%
Łuczko J., Czerwiński A.
|
PL
The paper is concerned with the analysis of a model describing the transverse vibrations induced by periodically variable fluid flow. Motion of the system was described by using partial differential equations with periodically variable coefficients. The analysis was performed by Galerkin method and orthogonal polynomials as shape functions. The instability regions were determined by Floquet theory. The influence of several parameters and boundary conditions on the natural frequencies and the instability regions were investigated.
7
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New electrode materials for hydrogen storage in batteries

51%
Rogulski Z., Łukaszewski M., Piela P., Czerwiński A.
|
2011
|
issue 6
50-56
8
Content available remote

Testing of mechanical and acoustical parameters of polyurethane materials with desirable properties

51%
Dziechciowski Z., Czerwiński A., Kuciel S., Prociak A.
Czasopismo Techniczne
|
-
PL
This paper summarises the results of the testing of the mechanical and acoustical behaviour of polyurethane materials with desirable properties. Testing was performed on several samples of materials which were modified during the manufacturing processes. Tests of mechanical parameters included, among other things, the Young modulus and the energy dissipation rate. Tests were conducted on the model 43 MTS Criterion hydraulic testing machine. In the framework of the acoustic research, sound absorption coefficient measurements were conducted. The sound absorption coefficient was measured with the type 4002 Bruel & Kjaer standing wave apparatus. Characteristics of the tested materials are provided.
9
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Validation of the method for determination of plutonium isotopes in urine samples and its application in a nuclear facility at Otwock

39%
Rzemek K., Czerwiński A., Dymecka M., Ośko J., Pliszczyński T., Haratym Z.
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|
issue 1
181-186
EN
The studies aimed at determining low activities of alpha radioactive elements are widely recognized as essential for the human health, because of their high radiotoxicity in case of internal contamination. Some groups of workers of nuclear facility at Otwock are potentially exposed to contamination with plutonium isotopes. For this reason, the method for determination of plutonium isotopes has been introduced and validated in Radiation Protection Measurements Laboratory (LPD) of the National Centre for Nuclear Research (NCBJ). In this method the plutonium is isolated from a sample by coprecipitation with phosphates and separated on a AG 1-X2 Resin. After electrodeposition, the sample is measured by alpha spectrometry. Validation was performed in order to assess parameters such as: selectivity, accuracy (trueness and precision) and linearity of the method. The results of plutonium determination in urine samples of persons potentially exposed to internal contamination are presented in this work.
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