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tom Vol. 56, iss. 1
43-64
EN
This paper presents ultimate limit state analysis of the resistance of reinforced concrete (RC) annular cross-sections with openings, subjected to the axial force and the bending moment. Based on nonlinear material laws for concrete and reinforcing steel and using the method of mathematical induction, analytical formulae are derived in the case when the cross-section is weakened by an arbitrary number of openings located symmetrically with respect to the bending direction. In this approach, the additional reinforcement at openings is also taken into account. The results of numerical calculations are presented in the form of interaction diagrams with the design values of the normalized cross-sectional forces nu and mu for the sections weakened by openings as well as for the closed ones. This approach has been applied to investigate the influence of different parameters such as the size and the number of openings, the reinforcement ratio, the additional reinforcement at the opening, the form of stress-strain relationships for concrete and the thickness/radius ratio, on the section resistance.
EN
The paper presents results of a pilot study aimed to exploration of the forms of resistance to mobbing (bullying at the workplace) and their effectiveness. The aim of the study is to find out what strategies bullied people use in the fight against mobbing. Furthermore, how effective are the strategies used to address mobbing situation. The text outlines the theoretical basis and the results of a study which showed eight strategies of resistance. These are performances against mobbing person, avoiding direct confrontation with mobbing person, finding social support, exodus, change of work pace, distance from mobbing person, accepting negative labels and resistance through leisure activities. This study could not clearly answer the question of what strategy leads to a successful resolution of mobbing. Two strategies that were found help mitigate the impacts of existing bullying in the workplace.
EN
This article deals with Max Hodann, physician, sexual reformer and socialist of the 1920s and member of european resistance against fascism, and his representation in the novel "Die Ästhetik des Widerstands" by Peter Weiss. In his novel Peter Weiss has reminded to a nearly forgotten victim of persecution in Nazi time. There already exist studies on the figure Hodann as an undogmatic socialist. This article focuses on the holistic view of the figure. This view is rooted in the historical person and becomes a paradigm for looking at political and cultural issues throughout the novel. The connexions between body and spirit, reason and emotion, handcraft and intellect are drawn on different levels and concerning different topics.
PL
Artykuł ukazuje Maxa Hodanna, lekarza, reformatora seksualności i socjalistę działającego w latach 20tych XX wieku, który przyłączył się do europejskiego ruchu oporu wobec faszyzmu, a także jego literacki obraz w powieści Petera Weissa "Estetyka oporu". Przedłożona analiza tekstu literackiego koncentruje się zarówno na postaci antydogmatycznego socjalisty, jakim był Hodann, jak i na krytyku patriarchatu i reformatorze o holistycznym spojrzeniu na społeczeństwo. Spojrzenie to ma swoje źródło w postaci historycznej, ale równocześnie funkcjonuje w powieści jako paradygmat dyskusji na tematy polityczne i kulturowe. Preferowana przez niego nierozłączność ciała i ducha, rozsądku i uczucia, rzemiosła i intelektu przejawia się na różnych płaszczyznach powieści Weissa oraz w różnych kontekstach.
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Content available remote The Presence of Metals and Antibiotics Resistant Bacteria in Arable Manure Soils
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Heavy metals and antibiotics resistance are intense public interest owing to their pollution in the environment and potential deleterious effects on human health. A total of 15 isolates of Bacillus subtilis, Bacillus cereus, Pseudomonas aeruginosa and Escherichia coli (50 manure garden soils) were tested for their resistance against certain heavy metals and antibiotics. Minimum inhibitory concentrations of Pb²⁺, Co²⁺, Cu²⁺, and Zn²⁺ for each isolate were also determined. B. subtilis, B. cereus, P. aeruginosa and E. coli exhibited high tolerance to minimum inhibitory concentrations of 3,200 μg/ml for Pb²⁺, 400 μg/ml for Cu²⁺ and Co²⁺, and 100 μg/ml for Zn²⁺ in agar plates. All the isolates were highly resistant to lead and they showed 100% growth in 3,200 μg/ml concentration. It was observed that all isolates were resistant to a wide range of antibiotics namely clindamycin, ceftazidime, aztreonam and vancomycin.
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Content available Hashtag a wspólnota medialna w środowisku oporu
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The article raisesthe question of the media community created in the context of resistance. The issue of retaining environments is presented based on the issues related to media messages which are created in the form of hashtags. In the network society, the media symbols becomes a meta-commentary, which may result in changes and transformations both in virtual and real area. The text is a reflection on the three aspects of the properties of the hashtag. The message is described as a tool for change, community opposition and the community of the thinks. This point of view gives the opportunity to demonstrate the interdependence that prevail in online subcultures of resistance.
EN
An increase in the antibiotic resistance among Enterococcus faecium strains has been observed worldwide. Moreover, this bacteria has the ability to produce several virulence factors and to form biofilm that plays an important role in human infections. This study was designed to compare the antibiotic resistance and the prevalence of genes encoding surface protein (esp), aggregation substance (as), surface adhesin (efaA), collagen adhesin (ace), gelatinase (gelE), and hialuronidase (hyl) between biofilm-producing and non-producing E. faecium strains. Therefore, ninety E. faecium clinical isolates were tested for biofilm-forming ability, and then were assigned to two groups: biofilm-positive (BIO+, n =70) and biofilm-negative (BIO-, n = 20). Comparison of these groups showed that BIO+ isolates were resistant to β-lactams, whereas 10% of BIO- strains were susceptible to ampicillin (statistically significant difference, p = 0.007) and 5% to imipenem. Linezolid and tigecycline were the only antibiotics active against all tested isolates. Analysis of the virulence factors revealed that ace, efaA, and gelE genes occurred more frequently in BIO- strains (ace in 50% BIO+ vs. 75% BIO-; efaA 44.3% vs. 85%; gelE 2.9% vs. 15%, respectively), while hyl gene appeared more frequently in BIO+ isolates (87.1% BIO+ vs. 65% BIO-). These differences were significant (p < 0.05). We concluded that BIO+ strains were more resistant to antibiotics than BIO- strains, but interestingly, BIO- isolates were characterized by possession of higher virulence capabilities.
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Content available remote Influenza viruses resistant to neuraminidase inhibitors
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Neuraminidase inhibitors (NAIs) are antiviral drugs for treatment and prophylaxis of influenza. By blocking the activity of the enzyme neuraminidase, NAIs prevent new viral particles from being released. The increasing use of NAIs brings into focus the risk of drug resistance arising to the class. There are three levels of antiviral resistance according to the way that resistance can be detected or inferred: genotypic, phenotypic and clinical resistance. For many years seasonal influenza viruses resistance to NAIs was low (0.33%). Recently, there has been described an increasing number of resistant seasonal influenza strains to oseltamivir (2% in adults, 5-18% in children). In 2007 there were published data describing 14% resistant to oseltamivir strains of influenza A/H1N1/ in Europe. Approximately 0.5-1.0% of influenza A/H1N1/pdm09 isolates are currently resistant to oseltamivir. The established markers of the resistance to oseltamivir were found in 2.4% of human and 0.8% of avian isolates of influenza A/H5N1/. It has been not observed a cross resistance among oseltamivir and zanamivir. NAIs resistance in influenza viruses is relative and despite its presence patients with resistant viruses may still benefit from receiving these antivirals. The response to treatment with antivirals remains the most important proof of antiviral effectiveness. The rational use of NAIs is essential to preserve the best choice for treatment and prophylaxis of seasonal, avian and pandemic influenza.
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In this paper the focus is laid on the diagnostic methods for rotating machines with respect to condition evaluation. In an overview the diagnostic measurements were presented and discussed. The most important factors for evaluation criterions were insulation resistance, dissipation factor, partial discharge and voltage withstand test. Some of these test results deliver absolute parameters and some have to be evaluated relatively. For the condition evaluation the absolute parameters deliver the information about the compliance of threshold values (passed/failed) to guarantee save operation within the next service interval. The relative parameters are helpful to find weak points in the electric insulation system, e.g. with PD pattern recognition the source of failures can be detected. In dependence of the maintenance strategy the results of the measurements and condition evaluation give helpful information for the decision of the further operation or if there have to be done any measures as overhaul, servicing or repair.
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The main subject of the analysis was the activity and political concepts of lay Cath-olics who operated on the Polish political scene in the 1980s. This group of Catholic activists had been active in the public sphere for many years; in the 1980s, they orga-nized themselves in a Polish Catholic-Social Union. This community was not among the most important political parties of the then political system; it was not a major factor stabilizing the system or a major source of change. Nevertheless, it did have a prominent feature – it had a parliamentary representation and participated in political practice; it also had a limited impact on political decisions. The main motive of their actions was to promote Catholic values in the public sphere, but also an attempt to create a Catholic party, in the right circumstances. Still, there is a disagreement, both among researchers and actors of the political scene of the time, about the clear-cut assessment of their politi-cal commitment. Nonetheless, it probably can be said that their attitudes are within the concept of semi-opposition and paralegal opposition, and, to some extent, in what we understand by the term of opposition of value systems.
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Content available remote Rury profilowe PEHD/PP - zalety w świetle badań wytrzymałościowych
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tom Nr 9
350-352
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Sections of pipes' walls used. Comparative analysis of profile pipes' resistance with symmetrical and asymmetrical profile's load. Statistical schemes of pipes' profiles' working.
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Every autumn, monolithic narratives of November 1989 emerge in the media in Slovakia. On the one hand, these narratives tend to reproduce the image of the revolution as a man-made historical event; on the other hand, they raise questions about agency, the space of politics, and the way historical memory has been constructed. The article provides a dialogue between the media narratives of the Velvet Revolution and the narratives of 16 women who were interviewed in a study. The narrative analysis is embedded in research on the feminist social movement and the theory of everyday resistance. The article challenges the idea of the public square as the primary space of the revolution and the ‘tribunes’ as the main actors of November 1989. The title is a reference to Deborah Cohen and Lessie Jo Frazier’s study Talking Back to ´68. Gendered Narratives, Participatory Spaces, and Political Cultures analysing narratives of 1968 in Mexico. Their research provides a broader context for an interpretation of the narratives of November 1989, revealing the similarities and specific features of the two different events.
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Content available remote Problémy interpretace dějin Černé Hory
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This text deals with a synthesis of the history of Montenegro published last year. The review considers it to be a significant contribution to both Czech and European research in the history of this state, as well as of the whole of the Balkan Peninsula. It values highly that the publication is well researched factwise and that it represents the culmination of the author’s long-standing and comprehensive researches into this part of Southeast Europe. It appreciates highly the comprehensiveness of interpretation (in particular the high standard of chapters on the cultural development and bilateral relations of Montenegro with the Czech Lands, alongside its accuracy of factography and accessibility for readers. Yet, on the other hand this review points out some interpretationally disputable sections in which the author did not succeed in separating himself sufficiently from the intentionally misrepresented nationalist narrative of Montenegran history. Further critical remarks refer to, amongst others, the relationships to the Serbian nationalist movement and Serbian social and power elites; the events of World War II; the assessment of the role and importance of the supporters of Montenegran autonomy or independence after World War I, yet also in the first half of the 1990s.
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The process of social remitting is complex and multilayered, and involves numerous social actors that at each stage face several choices. By definition, the process of socially remitting ideas, codes of behaviour and practices starts with the migrants themselves and their social context in the destination country. This paper focuses on the as yet unexplored issue of resistance performed and articulated by migrants confronted with potential change influenced by social remittances and the generalised process of diffusion. Faithful to the understanding of social remittances as ultimately a process where individual agency is the crucial determinant, the article follows the ideas, practices and values travelling across the transnational social field between Britain and various localities in Poland. Resistance to change and new ways of doing things is a continuous dialogical process within one culture’s power field, which is understood here in anthropological terms as a porous, open-ended field of competing meanings and discourses. Notions of bifocality, infra-politics of power relations and resistance are an important aspect of remittances and their reinterpretations, and resistance to social remittances by migrants, both in their destinations and in their communities of origin, is a crucial component of the whole process without which our understanding of remittances is incomplete.
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Poverty is the major restraint of people to modern medicine in the developing world. This brought about therapeutic usage of medicinal plants which can be traced back to history as different cultures utilize plants and plant products from ancient time for preventing and treating of diseases. These People in the developing countries or rural areas solely depend on traditional medicine for their primary health care, in which they majorly use plants or their active principles. Upsurge resistance of avian viruses to commercial drugs is both developed and developing countries problem which imposed a search for new avian antiviral substances from other sources like medicinal plants. This led to the discovery of Cucumis metuliferus E. Mey. ex Naudin fruit which has been verified by local farmers and scientific researchers to cure various diseases and conditions including avian viruses like Newcastle Disease Virus (NDV), Infectious Bursal Disease Virus (IBDV), avian influenza and Hepatitis B Virus. This review is aimed at revealing the avian virus diseases that are treated with the Cucumis metuliferus E. Mey. ex Naudin, fruit and phytochemical constituents responsible for this antiviral activities.
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The purpose of this study was to determine the load which allows the highest peak power for resisted sprinting on a non-motorized treadmill and to determine if other variables are related to individual differences. Thirty college students were tested for vertical jump, vertical jump peak and mean power, 10 m sprint, 20 m sprint, leg press 1 RM, leg press 1 RM relative to body weight, leg press 1 RM relative to lean body mass, leg press 1 RM power, and leg press power at 80% of 1 RM. Participants performed eight resisted sprints on a non-motorized treadmill, with increasing relative loads expressed as percent of body weight. Sprint peak power was measured for each load. Pearson correlations were used to determine if relationships between the sprint peak power load and the other variables were significant. The sprint peak power load had a mode of 35% with 73% of all participants having a relative sprint peak power load between 25-35%. Significant correlations occurred between sprint peak power load and body weight, lean body mass, vertical jump peak and mean power, leg press 1 RM, leg press 1 RM relative to lean body mass, leg press 1 RM power, and leg press power at 80% of 1 RM (r = 0.44, 0.43, 0.39, 0.37, 0.47, 0.39, 0.46, and 0.47, respectively). Larger, stronger, more powerful athletes produced peak power at a higher relative load during resisted sprinting on a nonmotorized treadmill.
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Various changes in body composition and body fat distribution are accompaniments of biological ageing, presented mostly in the middle age and significantly notable during the menopause transition. This study aimed to examine the effect of menopausal status on body composition characteristics in 368 apparently healthy women aged 38-61 years. Bioelectrical parameters were measured with a bioimpedance monofrequency analyser (BIA 101) and bioelectric impedance vector analysis (BIVA) was used to analyse tissue electric properties. Data dealing with menopausal status and symptoms as well as life style variables were obtained by the Menopause specific questionnaire. Statistical analysis adjusted for age did not show differences either in the body composition characteristics or in the nutrition and obesity indices between pre- and post-menopausal women. Regression analyses pointed on statistically significant effect (p<0.05) of physical exercise on Xc (B=2.353), FM % (B=-1.746) and MM % (B=1.201), of hypertension on R (B=-22.381), FM % (B=4.468), MM % (B=-2.306), of smoking on Xc (B=1.835), FM % (B=-1.227), MM % (B=0.767), of muscle and joint ache on the FM % (B=1.923) and on MM % (B=-1.061). The age had impact on Xc (B=-13.468) and on the phase angle (B=-1.320). To conclude, in our study group of pre- and postmenopausal Slovak women, age, health and life style factors seem to have more important effect on the body composition characteristics than menopausal status alone
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Glufosfamide (β-D-glucosyl-ifosfamide mustard) is a new agent for cancer chemotherapy. Its pharmacology is similar to commonly used oxazaphosphorines, but it does not require activation by hepatic cytochrome P-450 and preclinically demonstrates lower nephrotoxicity and myelosuppression than ifosfamide. The aim of the study was a comparison of the drug resistance profiles of glufosfamide and other oxazaphosphorines in childhood acute leukemias. Leukemic cells, taken from children with ALL on diagnosis (n = 41), ALL on relapse (n = 12) and AML on diagnosis (n= 13) were analyzed by means of the MTT assay. The following drugs were tested: glufosfamide (GLU), 4-HOO-ifosfamide (IFO), 4-HOO-cyclophosphamide (CYC) and mafosfamide cyclohexylamine salt (MAF). In the group of initial ALL samples median cytotoxicity values for GLU, IFO, CYC and MAF were 15.5, 33.8, 15.7 and 7.8 μM, respectively. In comparison with initial ALL samples, the relative resistance for GLU and IFO in relapsed ALL samples was 1.9 (p = 0.049) and 1.3 (ns), and in initial AML samples 31 (p < 0.001) and 5 (p = 0.001), respectively. All oxazaphosphorines presented highly significant cross-resistance. Glufosfamide presented high activity against lymphoblasts both on diagnosis and on relapse.
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In recent decades, the belief in progress that was widespread across the two centuries following the French Revolution has withered away. This article suggests, though, that the diagnosis of the end of progress can be used as an occasion to rethink what progress meant and what it might mean today. The proposal for rethinking proceeds in two big steps. First, the meaning of progress that was inherited from the Enlightenment is reconstructed and contrasted with the way progress actually occurred in history. In this step, it is demonstrated that progress was expected through human autonomy, but that it was actually brought about by domination and resistance to domination. A look at the short revival of progress after the middle of the twentieth century will confirm this insight and direct the attention to the transformation of the world over the past half century, on which the second step focuses. This socio-political transformation is analyzed as spelling (almost) the end of formal domination. The current era has often been characterized by the tendencies towards globalization and individualization as well as, normatively, by the increasingly hegemonic commitment to human rights and democracy. A critical analysis of the current socio-political constellation, however, shows that the end of formal domination does not mean the end of history; it rather requires the elaboration of a new understanding of possible progress. Progress can no longer predominantly be achieved through resistance to domination, but rather through autonomous collective action and through the critical interpretation of the world one finds onself in.
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