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1
Content available Rozważania semi-analityczne nt. dorobku naukowego Profesora Czochralskiego wraz z pytaniem o jego zakres?
100%
Gadomski A.
Chemik
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2014
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tom Vol. 68, nr 5
500--504
EN
In this semianalytic study, a question has been raised, and then answered, as to what extent Jan Czochralski, a renown Polish chemist, crystallographer and metallurgist, or even material (viz metal) scientist, etc., should belong, in terms of his achievements, to (physicochemical) metallurgy or ought to be recognized rather as a chemist, working with metals and their “doped derivatives”. The bare ground for answering the question consists of the fact that he did his research quite unseparably within physicochemical and/or mechanochemical (as a specific important subject) metallurgy of quite complex as well as very practical systems that he was able to address thoroughly by his investigations.
2
Content available remote Pierre-Gilles de Gennes (1932-2007)
100%
Gadomski A.
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tom T. 58, z. 6
279-281
3
Content available remote Teoria skalowania i układy nieuporządkowane [Ze zjazdów i konferencji]
100%
Gadomski A.
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2000
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tom T. 51, z. 6
321-323
PL
W dniach 13-14 kwietnia 2000 r. w auli Langevina Ecole Superieure de Physique et Chimie Industrielles w Paryżu odbyło się Międzynarodowe Spotkanie Naukowe (International Workshop on Scaling and Disordered Systems) poświęcone teorii skalowania i jej zastosowaniom w układach nieuporządkowanych, tj. ciągle żywo rozwijającej się dziedzinie z pogranicza fizyki statystycznej i fizyki materii skondensowanej oraz innych dyscyplin naukowej aktywności fizyków, jak np. kosmologia, chemia i biologia, genetyka, a także ekonomia i polityka.
4
Content available remote Statistical Physics Applied to Practical Problems [Ze zjazdów i konferencji]
100%
Gadomski A.
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2000
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tom T. 51, z. 2
98-99
PL
W dniach 19-22 maja 1999 r. na Politechnice w Budapeszcie odbyło się pod auspicjami Sekcji ds. Nauki NATO Naukowe Spotkanie Robocze (Advanced Research Workshop) poświęcone zastosowaniu metod i aparatu teoretycznego fizyki statystycznej do rozwiązywania praktycznych problemów w intensywnie rozwijających się w końcu XX w. dyscyplinach, jak np.: biologia i medycyna, ekologia, geologia, informatyka, technologia chemiczna i elektronowa, jak również w bardziej "egzotycznych" w pojęciu zastosowań fizyki działach, jak ekonomia, finanse czy też nauki społeczno-polityczne.
5
Content available remote Model multilineal pattern formation : a computer experiment
63%
Gadomski A. , Cyrankiewicz M.
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tom Vol. 7, nr 2
75-90
EN
Multilineal pattern formation in the square lattice is studied. It turns out that lognormality both in space (size) and time appears to be a main signature thereof. A diffusive character of the emerging patterns has been emphasized, and some elucidation, supporting an understanding of the model phenomenon in question is provided. Excursions towards dynamics of the multiline as well as a relation to known kinetic or dynamic models have been offered as well.
6
Discussion of nanoscale friction – lubrication effects on model articulating systems
51%
Beldowski P. , Gadomski A. , Wilczynska I. , Auge II W. K.
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2013
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tom 36
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nr 3B: Plenary Lectures
7
Content available remote Formation of soft material in terms of a coupled matter migration-and-relaxation picture: a synchronous mode
51%
Gadomski A. , Dressler M. , Santamaría-Holek I. , Rubi J. M.
Materials Science Poland
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2006
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tom Vol. 24, No. 4
935--949
EN
This study is devoted to draw a mesoscopic nonequilibrium thermodynamics (mnet)-based description of the model soft material, such as that made of clusters of amphiphilic molecules or biopolymer surfactants. The description offered also enters the region of nonlinear viscoelastic behaviour of soft-matter agglomerates, both in a fluctuation-driven (quantitatively, being realized in an synchronous mode) and some flow-driven (mostly, qualitatively) regime. A special emphasis is placed on a novel concept, termed the emergent (power-law) behaviour, which tries to effectively combine data available about specific soft-matter (complex) systems that under variety of physicochemical conditions often manifest a certain interesting mesoscopic properties
8
Content available remote Impact of the charge density of phospholipid bilayers on lubrication of articular cartilage surfaces
38%
Pawlak Z. , Kotynska J. , Figaszewski Z. A. , Oloyede A. , Gadomski A. , Gudaniec A.
Journal of Achievements in Materials and Manufacturing Engineering
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2007
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tom Vol. 23, nr 1
47-50
EN
Purpose: We attempt to answer the question how some changes in acid - base equilibrium have an impact on the charge density of a phospholipid bilayer formed during lubrication occurring at articular cartilage surfaces. Design/methodology/approach: Liposomes have been used to mimic biological phospholipid membranes on articular cartilage surface where proteins are bounded, ions are transported, energy is transducted, and cellular processes are taking place. The charge density of the membrane was determined as a function of pH and electrolyte concentration from the microelectrophoretic method. Liposome membrane has been prepared as an aqueous solution of NaCl under various pH conditions. Microelectrophoresis was used to examine the local acid-base equilibrium of the electrolytes with the membrane surface, which can be considered to be an interface of phospholipids in articular cartilage. Findings: The effects of the adsorption of ions (H+, OH- ; Na+, CI-), which are present in solution upon electric charge of the liposome membrane assembled of phosphatidycholine (PC), have also been found to exhibit pH-responsive (quasi-periodic) behavior. Research limitations/implications: We hypothesized that the acid-base dissociation behavior in phospholipid bilayers of articular cartilage is a key to understanding biolubrication processes. For example, similar previous investigators found that the behavior of a multilayer made of polyisopeptide/hyaluronic acid depends on some of the surface properties such as film thickness, surface friction, surface wetness and swelling conditions. Future work should consider the adsorption of polyelectrolyte ions, e.g., the glycoprotein lubricin and hyaluronan, at the liposome membrane surface involved, assumed that besides the H+ and OH- ions, the polyelectolyte ions were also engaged. Originality/value: This liposome membrane is a model for phospholipid bilayers and will be applied for the investigation of polyelectrolyte ions, e.g. lubricin, in articular cartilage conditions. We demonstrate that knowledge on the acid-base processes on charged surface is the key to understanding phenomena occurring at interfaces in human joints lubrication, thus pointing to the biolubrication as a charged interface-controlled process.
9
Content available remote A biochemical model for characterising the surface-active phospolipid bilayer of articular cartilage relative to acid-base equilibrium
38%
Pawlak Z. , Kotynska J. , Figaszewski Z. , Gadomski A. , Gudaniec A. , Oloyede A.
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2008
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tom Vol. 29, nr 1
24-29
EN
Purpose: This paper, addresses the question of how changes in acid - base equilibrium influence change in the charge density of the phospholipid bilayer on articular cartilage surfaces during lubrication. Design/methodology/approach: Liposomes have been used to mimic biological phospholipid membranes on articular cartilage surface where proteins are bounded, ions are transported, energy is transducted, and cellular processes take place. The charge density of the membrane was determined as a function of pH and electrolyte concentration from the microelectrophoretic method. Liposome membrane was prepared as an aqueous solution of NaCl under various pH conditions. Microelectrophoresis was used to examine the local acid-base equilibrium of the electrolytes with the membrane surface, which can be considered to model the phospholipids interface in articular cartilage. Findings: The adsorbed ions (H+, OH-, Na+, Cl-) which are present in the electrically charged solutions of liposome membrane comprising phosphatidycholine (PC), were found to exhibit pH-responsive quasi-periodic behavior. Research limitations/implications: We have established that the acid-base dissociation behavior in phospholipid bilayers of articular cartilage is a key to understanding biolubrication processes. For example,previous investigators found that the formation of the multilayer of polyisopeptide/hyaluronic acid depends on surface properties such as film thickness, surface friction, surface wetability; wetness and swelling behavior. Future work should consider the adsorption of polyelectrolyte ions, e.g., the glycoprotein lubricin and hyaluronan, on the liposome membrane surface in the presence of H+ and OH- ions. Originality/value: A novel model of the joints’ phospholipid bilayers has been created using liposome membrane This model can be applied in the investigation of polyelectrolyte ions such as lubricin, in articular cartilage. We have demonstrated that the acid-base processes on charged surfaces is a key mechanism in facilitating lubrication in human joints.
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