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2. Correlations Between Structures of Expanded Graphite – Polymer Composites and Acoustic Emission Phenomena / Korelacje Pomiędzy Strukturą Kompozytów Grafit Ekspandowany-Polimer A Zjawiskami Emisji Akustycznej

Author

Berdowska A., Berdowski J., and Aubry F.

Subjects
Compressed expanded graphite, Polymer, Composite, Acoustic emission parameters, Mining engineering. Metallurgy, TN1-997, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Compressed expanded graphite was applied as a base matrix to the preparation of microporous composites as products of impregnation, polymerization and carbonization of poly-furfuryl alcohol. During carbonization, the original polymeric structure is transformed into an amorphous turbostratic carbon structure with ultramicropores. The structure, porosity and many chemical and physical properties change after each stage of their technological treatment.

Published
2015
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3. Study of Properties of Expanded Graphite – Polymer Porous Composite by Acoustic Emission Method

Author

Berdowski J., Berdowska S., and Aubry F.

Subjects
compressed expanded graphite, polymerization, carbonization, composite membrane, acoustic emission, Mining engineering. Metallurgy, TN1-997, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Cel pracy stanowiło zbadanie przy użyciu metody emisji akustycznej (EA) fizycznych i mechanicznych właściwości spraso- wanego grafitu ekspandowanego (SGE) i jego porowatych pochodnych kompozytowych, otrzymanych po procesach impregnacji, polimeryzacji i karbonizacji. Przedstawiono i przedyskutowano mechaniczne i strukturalne charakterystyki sprasowanego gra- fitu ekspandowanego i trzech porowatych kompozytów otrzymanych na jego bazie, po kolejnych procesach technologicznych. Pomiary parametrów zarejestrowanych sygnałów EA w tych materiałach wykonano w szerokim przedziale częstotliwości emi- towanych w materiale fal (0,1-2,5 MHz). W pracy przedstawiono zmiany dwu z tych parametrów: szybkości zliczeń impulsów i rozkładu widmowego emitowanych fal. Analiza poszczególnych parametrów emisji akustycznej stwarza możliwości określenia mikro- i makrostrukturalnych zmian w materiałach, wytworzonych na różnych etapach procesu technologicznego. Przewidywane szerokie zastosowanie tych materiałów jako katalizatorów, posiadających bardzo duże powierzchnie właści- we, czyni je niezwykle interesującym przedmiotem badań. Również bardzo perspektywiczne jest wykorzystanie kompozytowych membran z matrycą ze sprasowanego grafitu ekspandowanego, wypełnionego polimerem alkoholu furfurylowego. do separacji gazów.

Published
2013
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21. Third-order nonlinear optical figure of merits for conjugated TTF-quinone molecules

Author

Fuks-Janczarek, I., Sahraoui, B., Luc J., Dumur, F., Hudhomme, P., Berdowski, J., and Kityk, I. V.

Subjects
Molecules -- Research, Absorption -- Research, Quinone -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

Third-order nonlinear optical figure of merits for two new TTF-molecules-TTF-diquinone(1) and TTF-monoquinone(2)-which belong to tetraathiafulvalene derivatives is studied. The result reveals that the small molecules under consideration present small absorption and their merit factor is relatively large compared to polyenic derivatives of TTF.

Published
2005

22. Genetic, clinical and pharmacological determinants of out-of-hospital cardiac arrest:Rationale and outline of the AmsteRdam Resuscitation Studies (ARREST) registry

Author

Blom, M T, van Hoeijen, D A, Bardai, A, Berdowski, J, Souverein, P C, De Bruin, M L, Koster, R W, de Boer, A, Tan, H L, Sub Pharmacoepidemiology, Sub Gen. Pharmacoepi and Clinical Pharm, Dep Farmaceutische wetenschappen, Sub Pharmacotherapy, Theoretical, Pharmacoepidemiology, Pharmacoepidemiology and Clinical Pharmacology, Cardiology, Sub Pharmacoepidemiology, Sub Gen. Pharmacoepi and Clinical Pharm, Dep Farmaceutische wetenschappen, Sub Pharmacotherapy, Theoretical, Pharmacoepidemiology, Pharmacoepidemiology and Clinical Pharmacology, Amsterdam Cardiovascular Sciences, Amsterdam Public Health, and Other departments

Subjects
Pediatrics, medicine.medical_specialty, Resuscitation, business.industry, Clinical study design, Public health, Alternative medicine, 030204 cardiovascular system & hematology, medicine.disease, Out of hospital cardiac arrest, 3. Good health, 03 medical and health sciences, 0302 clinical medicine, Cohort, Emergency medical services, Medicine, Medical history, 030212 general & internal medicine, Medical emergency, Arrhythmias and Sudden Death, Cardiology and Cardiovascular Medicine, business
Abstract

Introduction: Out-of-hospital cardiac arrest (OHCA) is a major public health problem. Recognising the complexity of the underlying causes of OHCA in the community, we aimed to establish the clinical, pharmacological, environmental and genetic factors and their interactions that may cause OHCA. Methods and analysis: We set up a large-scale prospective community-based registry (AmsteRdam Resuscitation Studies, ARREST) in which we prospectively include all resuscitation attempts from OHCA in a large study region in the Netherlands in collaboration with Emergency Medical Services. Of all OHCA victims since June 2005, we prospectively collect medical history (through hospital and general practitioner), and current and previous medication use (through community pharmacy). In addition, we include DNA samples from OHCA victims with documented ventricular tachycardia/fibrillation during the resuscitation attempt since July 2007. Various study designs are employed to analyse the data of the ARREST registry, including case-control, cohort, case only and case-cross over designs. Ethics and dissemination: We describe the rationale, outline and potential results of the ARREST registry. The design allows for a stable and reliable collection of multiple determinants of OHCA, while assuring that the patient, lay-caregiver or medical professional is not hindered in any way. Such comprehensive data collection is required to unravel the complex basis of OHCA. Results will be published in peer-reviewed journals and presented at relevant scientific symposia.

Published
2014

24. STUDY OF GRAPHITE - POLYMER - TURBOSTRATIC CARBON COMPOSITES BY ACOUSTIC EMISSION METHOD AT PERPENDICULAR GEOMETRY.

Author

BERDOWSKA, A., BERDOWSKI, J., and AUBRY, F.

Subjects
*GRAPHITE, *COMPOSITE materials, *MICROSTRUCTURE, *CARBON fibers, *GRAPHENE
Abstract

The purpose of this paper was to search the relations between the structure of the compressed expanded graphite - polymer - turbostratic carbon composites on successive stages of technological treatment and parameters describing the acoustic emission phenomena in these materials. The acoustic emission method can be used for measurements of changes in the structure and many different properties of materials. These investigations are a continuation of our earlier studies concerning physical, mechanical and chemical properties of porous composites created on the basis of a compressed expanded graphite matrix, obtained after successive technological procedures of impregnation, polymerization and carbonization of polyfurfuryl alcohol. The aim of this work was to investigate materials obtained at different levels of technological processing, thus with different densities, porosity, physical and chemical properties, by using the acoustic emission method. In compressed expanded graphite composites structures one can differentiate two basic directions: perpendicular to the bedding plane of graphite flakes and parallel to this one. The all presented results were obtained for the uniaxial strain applied in the direction perpendicular to the bedding plane of the composite structure. Analysis of acoustic emission parameters provides information on physical and chemical processes in these materials. [ABSTRACT FROM AUTHOR]

Published
2018
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25. Genetic, clinical and pharmacological determinants of out-of-hospital cardiac arrest: rationale and outline of the AmsteRdam Resuscitation Studies (ARREST) registry

Author

Sub Pharmacoepidemiology, Sub Gen. Pharmacoepi and Clinical Pharm, Dep Farmaceutische wetenschappen, Sub Pharmacotherapy, Theoretical, Pharmacoepidemiology, Pharmacoepidemiology and Clinical Pharmacology, Blom, M T, van Hoeijen, D A, Bardai, A, Berdowski, J, Souverein, P C, De Bruin, M L, Koster, R W, de Boer, A, Tan, H L, Sub Pharmacoepidemiology, Sub Gen. Pharmacoepi and Clinical Pharm, Dep Farmaceutische wetenschappen, Sub Pharmacotherapy, Theoretical, Pharmacoepidemiology, Pharmacoepidemiology and Clinical Pharmacology, Blom, M T, van Hoeijen, D A, Bardai, A, Berdowski, J, Souverein, P C, De Bruin, M L, Koster, R W, de Boer, A, and Tan, H L

Published
2014

32. Climate variability

Author

Weber, S.L., Guicherit, R., van den Brink, H.W., van Dorland, R., Dijkstra, H., Greuell, W., Komen, G.J., Können, G., van Leeuwen, P.-J., van de Plassche, O., Opsteegh, J.D., de Ruiter, W.P.M., Selten, F.M., van Ulden, A., Vandenberghe, J., Berdowski, J., Heij, B.J., Marine Biogeology, and Climate Change and Landscape Dynamics

Published
2001

40. Schaalvergroting in boomkwekerijen

Author

Berdowski, J. and Berdowski, J.

Abstract

Grafieken met de verdeling naar arealen van gewasgroepen, de oppervlakte van boomkwekerijgewassen per provincie in 2001, en de afzetkanalen in procenten van de afzet 1996-2001

Published
2002

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