140 research outputs found
Bogusław Śliwa (1944-1989) - działacz opozycji demokratycznej i "Solidarności" w Kaliszu
Bogusław Śliwa was born in Lvov on 6 October 1944. He graduated in law studies at Adam Mickiewicz University in Poznań in 1969. Following the completion of his prosecutor’s apprenticeship he worked, among
others, in Wolsztyn, Świebodzin and – from 1975 – in Kalisz. On 22 August 1978 Śliwa was fired from the
public prosecutor’s office because he had attempted to detect a person who murdered during the robbery
committed by a Civic Militia officer. That time he established and maintained close contacts with activists of
the Workers’ Defence Committee (KOR), among others: Jacek Kuroń, Mirosław Chojecki, Adam Michnik,
Bronisław Geremek, Jan Lityński, Zofia Romaszewska and Zbigniew Romaszewski. In 1978 he began to
cooperate with the Kalisz group of the Movement for the Defence of Human and Civil Rights (ROPCiO). In
the early 1979 this group started to publish “Wolne Słowo” in which Śliwa was a co-editor. On 28 June 1979
in Poznań he was involved in founding the Social Self-Defence Club of the Wielkopolska and Kujawy Region.
In September 1980, during strikes at the FWR “Runotex” and KZKS “Winiary” in Kalisz Śliwa was an
expert representing the workers. On 29 September of that year, he arranged in Kalisz a meeting of representatives and delegates of enterprises in Kalisz aimed at appointing the Board of the Inter-Enterprise Founding Committee of the Independent Self-Governing Trade Union. He became the secretary. Bogusław Śliwa also engaged in setting up and developing an information team. He was informally responsible for developing an information and printing base. Bogusław Śliwa set up “NSZZ Solidarność” magazine where he published his own articles. He also founded the “Solidarność” Workers’ Community Centre in Kalisz. it is noteworthy that it was the only community centre in Poland established by „Solidarność”. In December the Nationwide Liaison Commission of „Solidarność” appointed him to the Committee for the Defence of Prisoners
of Conscience established on 10 December of that year. He participated in the information meeting of the
Independent Self-Governing Trade Union of Independent Farmers “Solidarność Wiejska” held in Staw, in
Szczytniki commune. During that meeting “Solidarność Wiejska” led by Mieczysław Walczykiewicz requested
the authorities to liquidate the “Świt” Agricultural Production Cooperative in Cieszyków, in Szczytniki
commune. Bogusław Śliwa was involved in this successful event. It was the first liquidation of cooperative
in Poland. On 11 January 1981 Śliwa co-organized the 1st Regional Convention of „Solidarność” Wiejska in
Kalisz. Following the so-called Bydgoszcz events of 19 March 1981 he advocated the general strike. Due to
his attitude, Śliwa was listed as one of 146 „Solidarność” activists executed by the 3rd “A” Department of the
Ministry of Internal Affairs. According to the authorities those activists presented radical views. On 30 June
1981 at the 1st General Delegates Convention of the Kaliskie province, Śliwa, as a delegate of the Kaliskie
province, was appointed to the Regional Board of „Solidarność” – Southern Wielkopolska. In July Śliwa set
up in Kalisz the underground branch of the Polish Democratic Party. In 1981 Śliwa was a delegate to the
1st National Delegates Convention of „Solidarność” and co-edited with Jan Lityński the document entitled:
“Message to the Working People of Eastern Europe” originated by Henryk Siciński and adopted by the 1st
National Delegates Convention. On 22 November he participated in the Warsaw-held meeting founding the
Self-Governing Republic Clubs “Liberty – Equality– Independence” and signed the founding declaration. On
28 of that month he co-organized with Antoni Pietkiewicz a founding meeting of the Club in Kalisz. When
martial law was declared he began to hide in Kalisz. Śliwa was arrested on 25 February 1982 and interned
in Ostrów Wielkopolski and then in Gębarzew and Kwidzyn. After being released on 25 November 1982, he
was immediately involved in the activity of the underground movement of „Solidarność”. He edited the first
two issues of “Nasza Solidarność” magazine published in Kalisz. Śliwa co-invented and co-organized the 1st
May march that was independent from the authorities’ one held in Kalisz in 1983. Consequently, he was temporarily arrested and detained in Ostrów Wielkopolski. On 7 June 1983 he was released from custody. The
amnesty declared on 21 July 1983 caused that the investigation against him was discontinued. In July of the
same year he co-founded the Inter-Regional Coordination Commission of the Independent Self-Governing
Trade Union “Solidarność” Kalisz-Konin-Sieradz. As he could not find any work and he and his family were
exposed to psychological harassment, he emigrated to Sweden on 30 December 1983. He worked, among
other positions, as bookbinder. He was the board secretary of the Congress of Poles in Sweden. In 1984 he
commented the death of priest Jerzy Popiełuszko in “Dagens Nyheter” daily. He was also interviewed by
Radio Liberty. Śliwa commenced cooperating with representatives of the „Solidarność” Coordination Office
in Paris, Brussels and Stockholm. On 18 April 1985 the Military Garrison Prosecutor’s Office in Wrocław
initiated investigations against Śliwa, charging him with activities detrimental to political interests of the
People’s Republic of Poland. Subsequently, on 10 July 1985 this public prosecutor’s office decided to issue
an arrest warrant for him. On the same day the public prosecutor suspended criminal proceedings against
him. In December 1985, after the courageous escape of two brothers, Adam and Krzysztof Zieliński, from
Poland to Sweden, he helped them prevent their deportation and stay in their new homeland. He expressed
his opinion on this issue on Swedish television and in “ Dagens Nyheter” daily. His intervention helped
them legally stay in Sweden. In 1989 he arrived in Poland. During this short visit he met and talked with his
colleagues from the so-called first „Solidarność”. Bogusław Śliwa died in Stockholm on 23 November 1989.
He was buried there on 7 December 1989. On 18 October 2006 he was posthumously honoured by Lech
Kaczynski, President of Poland, with the Order of Polonis Restitution. On 15 June 2007 Bogusław Śliwa was
posthumously granted the title of an Honorary Citizen of Kalisz by the Town Council of Kalisz
Morphology of the tendon of Todaro within the human heart in ontogenesis
The tendon of Todaro, found in the right atrium of the heart, has considerable clinical importance in the fields of both cardiac surgery and invasive cardiology. The goal of this study is to examine the occurrence and degree of development of the tendon of Todaro in humans. Research was conducted on material consisting of 160 human hearts of both sexes from the age of 14 Hbd to 87 years of age. Classical anatomical methods were used and histological sections were prepared from 100 hearts of various age groups stained in Masson’s method with Goldner’s modification. The tendon of Todaro occurred in all examined hearts. In foetal hearts, in the area typical of the course of the tendon of Todaro, a very well-developed, “white-like” structure was observed, convexed into the lumen of the atrium. Histologically, this was young fibrous tissue with a characteristically large number of fibroblasts. Evenly in infants and newborns, a visible convex structure was also observed extending into the lumen of the right ventricle, however, to a lesser degree than in foetuses. In the group of hearts of young adults, it was also possible to follow the course of the tendon of Todaro macroscopically. However, the older the heart was, the less the convex was visible, and in older adults it was completely invisible. In histological sections, it was observed that with ageing the number of connective tissue cells decreased, and fibres forming the lining increased. In the hearts of older adults the tendon of Todaro formed very small ribbons of connective tissue. Histologically, only small numbers of cellular elements were noticed. In the adult heart the examined tendon was located the deepest and did not connect to the endocardium. We can conclude that tendon of Todaro is a stable structure, occurring in all examined hearts even when it is not macroscopically visible. Due to the morphological changes that affect the tendon of Todaro in human ontogenesis, for the cardiac surgeon, its relevance as an important topographical structure in the hearts of older adults is minimal
Development of the atrioventricular junctional area in the human heart
The structure of the heart has been the subject of many observations since the beginnings of medical research. The first information regarding the existence of the conduction system of the heart was described by Purkinje and regarding the a-v node by Tawara. From the history regarding this structure it seems that this special system, so relevant to today™s invasive cardiologist, is not understood in full. With regards to the interventional electrophysiology on the basis of histological study we decided to evaluate in detail the morphology and the topography of the various portions of the a-v junction. In order to confirm this hypothesis we made observations on the autopsy material of 100 normal human hearts, both sexes from 16 weeks of foetal life to 105 years of age, in which no pathological changes or inborn faults were found. Sections were done containing the heart™s septum, stained using Masson™s method with Goldner™s modification. This research proves that the atrioventricular junction is a stable structure occurring in all hearts, undergoing involutionary changes with age, in which two main parts can be differentiated: the node and the bundle. The morphology of the node is very complex, because it is composed of three zones: the prenodal, the perinodal and the main, differing in cell structure and position. The topography of the node is generally stable, as it lies in the interatrial septum and always above the septal leaflet of the tricuspid valve. The structure of the bundle, in contrast to the node, is more stable and consists of the following parts: the penetrating, the non-branching and the branching. Its topography is also stable, as it lies in the membranous septum, mainly below the septal cusp of the tricuspid valve
Contribution of transcription-coupled DNA repair to MMS-induced mutagenesis in E. coli strains deficient in functional AlkB protein.
In Escherichia coli the alkylating agent methyl methanesulfonate (MMS) induces defense systems (adaptive and SOS responses), DNA repair pathways, and mutagenesis. We have previously found that AlkB protein induced as part of the adaptive (Ada) response protects cells from the genotoxic and mutagenic activity of MMS. AlkB is a non-heme iron (II), alpha-ketoglutarate-dependent dioxygenase that oxidatively demethylates 1meA and 3meC lesions in DNA, with recovery of A and C. Here, we studied the impact of transcription-coupled DNA repair (TCR) on MMS-induced mutagenesis in E. coli strain deficient in functional AlkB protein. Measuring the decline in the frequency of MMS-induced argE3-->Arg(+) revertants under transient amino acid starvation (conditions for TCR induction), we have found a less effective TCR in the BS87 (alkB(-)) strain in comparison with the AB1157 (alkB(+)) counterpart. Mutation in the mfd gene encoding the transcription-repair coupling factor Mfd, resulted in weaker TCR in MMS-treated and starved AB1157 mfd-1 cells in comparison to AB1157 mfd(+), and no repair in BS87 mfd(-) cells. Determination of specificity of Arg(+) revertants allowed to conclude that MMS-induced 1meA and 3meC lesions, unrepaired in bacteria deficient in AlkB, are the source of mutations. These include AT-->TA transversions by supL suppressor formation (1meA) and GC-->AT transitions by supB or supE(oc) formation (3meC). The repair of these lesions is partly Mfd-dependent in the AB1157 mfd-1 and totally Mfd-dependent in the BS87 mfd-1 strain. The nucleotide sequence of the mfd-1 allele shows that the mutated Mfd-1 protein, deprived of the C-terminal translocase domain, is unable to initiate TCR. It strongly enhances the SOS response in the alkB(-)mfd(-) bacteria but not in the alkB(+)mfd(-) counterpart
The Aschenbach effect: unexpected topology changes in motion of particles and fluids orbiting rapidly rotating Kerr black holes
Newton's theory predicts that the velocity of free test particles on
circular orbits around a spherical gravity center is a decreasing function of
the orbital radius , . Only very recently, Aschenbach (A&A 425,
p. 1075 (2004)) has shown that, unexpectedly, the same is not true for
particles orbiting black holes: for Kerr black holes with the spin parameter
, the velocity has a positive radial gradient for geodesic, stable,
circular orbits in a small radial range close to the black hole horizon. We
show here that the {\em Aschenbach effect} occurs also for non-geodesic
circular orbits with constant specific angular momentum . In Newton's theory it is , with being the cylindrical
radius. The equivelocity surfaces coincide with the surfaces which,
of course, are just co-axial cylinders. It was previously known that in the
black hole case this simple topology changes because one of the ``cylinders''
self-crosses. We show here that the Aschenbach effect is connected to a second
topology change that for the tori occurs only for very highly
spinning black holes, .Comment: 9 pages, 7 figure
Teoria systemu społecznego obiegu literatury
Faulstich Werner, Teoria systemu społecznego obiegu literatury [Theory of the Social System of Literature Circulation]. „Przestrzenie Teorii” 32. Poznań 2019, Adam Mickiewicz University Press, pp. 435–451. ISSN 1644-6763. DOI 10.14746/pt.2019.32.24.
The main hypothesis of literature circulation in a theory system can be formulated as follows: literature circulation is an inextricable element of literature, while literature constitutes an integral part of literature circulation. To provide evidence to this supposition, it is necessary to draw from the definition of a system proposed by Helmut Wilke in his Systemtheorie (1982). The social circulation of literature demands the emergence of a series of subsystems which, as part of the system, are characterised by their own factors, relations and ways of organisation. The most important category, enabling us to tell the difference between various subsystems of the literature circulation, is the medium. It goes without saying that any kind of literature is passed on via a particular kind of medium, i.e. the novel through the medium of the book, radio drama through the medium of radio, the feature film through the medium of film, stage drama through the medium of theatre, etc. It is impossible to separate “Literature” from “Circulation”. As a consequence, the history of literature is neither a pure history of a particularpiece or utopia (the latter being the approach of the idealistic literary studies), nor pure history of media (technology) as a part of a general history of communication and society (which is the journalism approach). Instead, it clearly separates itself from both, i.e. as a history of a mediated utopia.Faulstich Werner, Teoria systemu społecznego obiegu literatury [Theory of the Social System of Literature Circulation]. „Przestrzenie Teorii” 32. Poznań 2019, Adam Mickiewicz University Press, pp. 435–451. ISSN 1644-6763. DOI 10.14746/pt.2019.32.24.
The main hypothesis of literature circulation in a theory system can be formulated as follows: literature circulation is an inextricable element of literature, while literature constitutes an integral part of literature circulation. To provide evidence to this supposition, it is necessary to draw from the definition of a system proposed by Helmut Wilke in his Systemtheorie (1982). The social circulation of literature demands the emergence of a series of subsystems which, as part of the system, are characterised by their own factors, relations and ways of organisation. The most important category, enabling us to tell the difference between various subsystems of the literature circulation, is the medium. It goes without saying that any kind of literature is passed on via a particular kind of medium, i.e. the novel through the medium of the book, radio drama through the medium of radio, the feature film through the medium of film, stage drama through the medium of theatre, etc. It is impossible to separate “Literature” from “Circulation”. As a consequence, the history of literature is neither a pure history of a particularpiece or utopia (the latter being the approach of the idealistic literary studies), nor pure history of media (technology) as a part of a general history of communication and society (which is the journalism approach). Instead, it clearly separates itself from both, i.e. as a history of a mediated utopia
The topography of the subthebesian fossa in relation to neighbouring structures within the right atrium
The majority of anatomical structures within the heart during typical atrial flutters’ ablation, right sided accessory pathway ablation or slow pathway ablation are invisible
or blurred. Therefore it is very important to know in details interior right atrial structures during such procedures. In the neighborhood of coronary sinus orifice small concavity is visible. This area, called subthebesian fossa, is placed between
the os of coronary sinus, the orifice of vena cava inferior and tricuspid annulus. The fossa is on the way of typical atrial flutters’ reentrant circuit and is placed next to the isthmus area, which has become a target site for ablative therapy.
Regarding the facts mentioned above we decided to examine the topography of
this concavity in relation to neighboring structures.
Research was conducted on material consisting of 45 human hearts of both
sexes, from 19 to 71 years of age. The hearts came from patients whose death
was not cardiologic in origin. The topography of the fossa was examined in
relation to coronary sinus orifice (diameter A), vena cava inferior orifice (diameter B) and the attachment of the posterior leaflet of the tricuspid valve (diameter C).
Besides we measured two perpendicular sizes in the inlet plane of the fossa.
There were the longest size (diameter D) and the shortest size of the fossa (diameter E). We also defined deepness of the fossa (diameter F).
Diameter A was from to 2 to 7 mm (avg. 4.9 ± 1.4 mm), diameter B from 2 to 8 mm (avg. 4.0 ± 1.6 mm) and diameter C from 5 to 9 mm (avg. 7.0 ± 1.5 mm). The
longest size in inlet plane of the concavity (diameter D) was from 12 to 18 mm (avg.14.1 ± 1.7 mm) and shortest size (diameter E) was from 7 to 14 mm
(avg. 9.0 ± 1.7 mm). The deepness of the fossa (diameter F) was from 2 to 7 mm (avg. 4.8 ± 1.2 mm).
The subthebesian concavity is inconstant anatomical structure, occurring in all forty five examined hearts (100%).
The shape and sizes of the subthebesian fossa were variable in examined group of hearts. Our data suggest that differences in diameters between subthebesian fossa and neighboring structures may have clinical importance during ablation
procedure
The arrangement of muscle fibres in the region of the subthebesian fossa in the aspect of atrial flutter
The typical atrial flutter is the most common supraventricular tachycardia with
reentrant circuit. This tachyarrythmia is based on macroreentry wave going around
established anatomic landmarks. The reentry in the inferior right atrial wall passes
through narrow isthmus, which is the goal for ablative therapy. The isthmus
area is bordered anteriorly by the tricuspid valve and posteriorly by the inferior
vena cava, coronary sinus, and eustachian ridge. Near to this area we can find
anatomical structure, which can be very important during arising, perpetuation
and curing of atrial flutter. The concavity, so-called subthebesian fossa [15], is on
the way of typical atrial flutters’ reentrant circuit.
Regarding the facts mentioned above we decided to examine the morphology
and the arrangement of the muscle fibres in this fossa.
Research was conducted on material consisting of 70 human hearts of both
sexes from the age of 34 to 72 years. 50 hearts came from patients whose
death was not cardiologic in origin. 20 hearts came from humans in whose
common atrial flutter was confirmed. We observed the arrangement of muscle
fibres in the area of subthebesian fossa. Besides we measured the size and deepness
of the subthebesian fossa in both groups of hearts.
We found that regular arrangement of muscle fibres within subthebesian fossa
was present in 23 healthy human hearts (46%) and 7 cases (35%) of hearts with
atrial flutter. The irregular arrangement of muscle fibres was observed in 27
hearts (54%) of control group and 13 hearts (65%) with dysrrhythmia. The thickness
of the right atrial wall within the subthebesian fossa was very thin in 8
normal hearts (16%) and in 5 dysrrhythmic hearts (25%). The sizes of examined
structure were variable in both groups of hearts, and are presented in the table.
It seems that the subthebesian concavity can be the substrate for reentrant
circuit during atrial flutter, and there could be such special arrangement of muscle
fibres, which allows for microreentrant circuit to arise in this area
Diameters of the cavo-sinus-tricuspid area in relation to type I atrial flutter
Cardiac arrhythmias have troubled patients and fascinated physicians for centuries. The twentieth century was an era of progress, when the mechanism of cardiac disorders became more commonly recognised. Arrhythmias may be due to abnormalities of automaticity, to abnormalities of conduction, or to a combination of both. In order for re-entry to occur, an area of slowing conduction combined with unidirectional block must be present. Much investigation has
centred on the underlying re-entry mechanisms of atrial flutter. In the light of these facts, it would seem that a close acquaintance with the detailed topography of the vena cava orifice (cavo), coronary sinus orifice (sinus) and the attachment of the septal leaflet of the tricuspid valve (tricupid) area could be of great
interest, especially for invasive cardiologists.
The research was conducted carried out on material consisting of 41 hearts of humans of both sexes from the age of 12 to 80 (6 female, 35 male). Classical macroscopic methods of anatomical evaluation were used. The following measurements were made: the shortest distance between the Eustachian valve and the attachment of
the tricuspid valve on the left margin of the coronary sinus orifice (diameter 1), the distance between the attachment of the tricuspid valve and the inferior margin of the sinus orifice (diameter 2), the distance between the Eustachian valve and the attachment of the tricuspid valve on the right margin of the coronary sinus orifice (diameter 3), the distance between the inferior margin of the vena cava inferior and the attachment of the tricuspid valve (diameter 4) and, finally, the diameter between the attachment of the septal cusp of the tricuspid valve and the external border of the vena cava inferior (diameter 5).
No correlation was found between the age and sex of the three groups of the material. The dimensions of the structure examined were similar in the three groups of hearts. In young adult hearts all the diameters measured ranged from 4 to 47 mm The average diameters were, respectively: 15.02 mm (diameter 1), 8.97 mm (diameter 2), 17.27 mm (diameter 3), 26.87 mm (diameter 4), 36.42 mm (diameter
5). In the mature adult hearts all the diameters measured ranged from 8 to 45 mm: 18.19 mm (diameter 1), 10.54 mm (diameter 2), 19.95 mm (diameter 3), 28.90 mm (diameter 4), 39.63 mm (diameter 5). In the older adults hearts all the diameters measured ranged from 4 to 47 mm. The average diameters were, respectively: 15.65 mm (diameter 1), 8.70 mm (diameter 2), 7.25 mm (diameter 3), 26.80 mm (diameter 4), 35.85 mm (diameter 5).
On the basis of our study we were able to conclude that the diameters of the cavo-sinus-tricuspid area were constant and did not differ significantly within the three (young, mature, old) adult groups examined
Histologic evaluation of the atrioventricular nodal artery in healthy humans and in patients with conduction disturbances
The anatomy of the conduction system of the heart so relevant in the contemporary invasive cardiology is not fully understood. It has turned out that ablation procedures bring new information as to its structure and function, but in some cases can result in complete a-v block. Atrioventricular nodal artery located within the nodal-perinodal tissue can probably be damaged during the ablation procedures. Therefore, we decided to explore in detail the morphology and the topography of the atrioventricular nodal artery in healthy humans and in patients with clinical traits of a-v conduction disturbances requiring permanent pacing.
The microscopic study was carried out on 30 normal human hearts specimens (17F, 3M) from 17 to 86 years of age, and on 20 hearts with conduction disturbances (11F, 9M) from 39 to 85 years of age. We found that the number of the atrioventricular node arteries is different and independent of the extent that induces block causing conduction disturbances. The topography of the artery in perinodal zone was consistent in normal hearts, yet in hearts with conduction disturbances we observed about 2% of deviations in its location. It might be the reason for generation of iatrogenic complications after invasive cardiological procedures. The morphology revealed changes in 50% of the examined hearts and their vessel walls, which was declared to be connected with ageing. This correlated with certain stages of atherosclerosis as well as hypertension characteristic of elderly patients. We observed that in 33% of hearts from control group small parietal thrombi were detected and in 60% of paced group respectively. Hence, it seems that the procedures in perinodal zone should be performed in its proximal part because of a minor probability of direct and indirect (through nodal artery) damage of the atrioventricular structure of the junction
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