Application of a new theory of restraint factor after cracking of reinforced concrete members

Adetailed tie model of cracking is proposed. The model is dedicated to both semi-massive RC (reinforcement concrete) members subjected to early-age imposed strains and non-massive members in which imposed strains occur after concrete hardening. As distinct from the currently applied European guidelines, the proposed model enables an analysis of crack width changes. These are a function of progressive imposed strain, material and geometry data, but also depend on the scale of cracking which determines the strain conditions of a member. Consequently, the new model takes account of not only the factors determining the cracking development but also the member relaxation effect that results from cracking. For this reason a new definition of restraint factor is proposed, which takes into account the range of cracking of a structural member, i.e. the number and width of cracks. Parametric analyses were performed of both the changes of the degree of restraint after cracking as well as the changes of crack width depending on the adopted type of aggregate, class of concrete and the coefficient of thermal expansion of concrete. These analyses indicate the potential benefits of the application of the presented model for both a more accurate interpretation of research and economical design of engineering structures

Nonlinear fem analysis of reinforced concrete beam strengthening with pretensioned CFRP strip

The paper gives a detailed description of strengthening of reinforced concrete beams with CERP materials. A review of the building structure, the results of monitoring its technical state and the methods used to strengthen it are included. The strengthened beams are a part of an industrial hall roof support structure. The beams were strengthened with pretensioned carbon fiber strips in flexure and composite fabrics in shear. It was the first implementation in Poland of strengthening an RC structure by pre-stressing with CFRP strips. Nonlinear FEM analysis has been used to evaluation the effectiveness of strengthening method

Strengthening method of effectiveness evaluation of reinforced concrete with external unbonded steel tendons

Nowadays reinforced concrete bending elements are strengthened most often using post-tensioning technology with unbonded steel tendons or CFRP materials. Type of material used to strengthen of the building structure is selected based on the real conditions of structure exploitation as well as structural solution, accessibility to element and anticipated strengthening effectiveness. Values of post-tensioning forces are known based on measured jack pressure, concrete strains in selected cross sections and girder deflection. In case of strengthening the cracked elements, the cracks should be injected with epoxy resin before start to strengthen. The method of injection should be suitable to values of crack widths. In case of many cracks, some of them (small cracks) are unfilled. It can be supposed their presence have influence for strengthening effectiveness evaluation of reinforced concrete elements

The course of pregnancy and delivery in a patient with malaria

Malaria is one of the most common lethal parasitic diseases. Infection is transmitted when an infected female mosquito bites a human introducing the sporozoites into human blood. The article presents the course of pregnancy and delivery in a patient complicated by Plasmodium infection. The patient had repetitive several trips to Tanzania over a short time period before she developed the condition. She had been taking antimalarial medication (proguanil-atovaquone) in a prophylactic dose during and after her first travel to Tanzania. Following her first return to Poland she experienced infection-related symptoms

Self-assessment concerning the quality of life among family nurses

Zuń Katarzyna, Fidecki Wiesław, Wysokiński Mariusz, Sienkiewicz Zofia, Kulina Dorota, Zych Magdalena, Jędrzejewska Aneta, Kijowska Agnieszka. Self-assessment concerning the quality of life among family nurses. Journal of Education, Health and Sport. 2018;8(12):317-316. eISNN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.2277626 http://ojs.ukw.edu.pl/index.phpohs/article/view/6376 The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part b item 1223 (26/01/2017). 1223 Journal of Education, Health and Sport eissn 2391-8306 7 © The Authors 2018; This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike. (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 10.11.2018. Revised: 20.11.2018. Accepted: 14.12.2018. Self-assessment concerning the quality of life among family nurses Katarzyna Zuń1, Wiesław Fidecki1, Mariusz Wysokiński1, Zofia Sienkiewicz2, Dorota Kulina1, Magdalena Zych1, Aneta Jędrzejewska1, Agnieszka Kijowska1 1Chair of Development in Nursing, Medical University of Lublin 2Depatrment of Social Nursing, Medical University of Warsaw Corresponding author: Wiesław Fidecki Chair of Development in Nursing Medical University of Lublin Staszica Str.4-6 20-059 Lublin tel. +48 81 448 68 04 e-mail: [email protected] Abstract Introduction. Due to the numerous responsibilities, perceived accountability and significant psychophysical workload, there is a decrease in self-assessment concerning the quality of life among nurses of various specializations. The level of quality of life depends on various factors, which impact is individually dependent according to one’s subjective perception. Aim. The aim of the research was to determine the self-assessment concerning the quality of life among family nurses. Materials and method. The group of respondents consisted of 152 professionally active family nurses. The quality of life was examined with a standardized tool: the WHOQOL-Bref scale. Results. The examined family nurses rated their quality of life at an average of 3.79±0.78, while the self-assessment regarding their health amounted to the average of 3.69±0.84. The highest marks were received by the social field (72.25±18.44) among respondents. They slightly lower rated the physical domain (69.59 ±14.46) as well as the environmental domain (66.46±13.08). Whereas, the lowest rating was assigned to the psychological domain (59.96±12.13). Conclusion. The self-assessment concerning the quality of life among family nurses is characterized as on an average level. The age of the respondents significantly differentiates the quality of life of the researched occupational group. Moreover, along with an increase in vocational education, the quality of life perception of the nurses’ increases. Key words: quality of life, family nurse

The Importance of TDA Thermal Analysis in an Automated Metallurgical Process

The article presents the results of research and work related to the implementation of the research and development project POIR.01.01.01-00-0120/17 co-financed by the EU, through the NCBR, entitled: Innovative technology using thermal analysis, TDA, of self-feeding manufacturing of high-quality cast iron to produce new generation, enhanced performance casts. In many foundries, thermal derivative analysis (TDA) is used in addition to chemical analysis to evaluate the physical and chemical properties of an alloy while it is still in the melting furnace or ladle and before it is poured into the mold. This fact makes it possible to improve the metallurgical quality of the alloy by introducing alloying additives, carburizers or modifiers into the furnace as part of the pre-modification or primary or secondary modification in the ladle or when pouring into molds. Foundry machinery (modifier dosing systems and spheroidizing station) is very important in these operations. Only the full synergy of modern equipment with modern technology ensures high quality and repeatability of the casting process. The article mainly discusses the obtained parameters of TDA analysis (with the use of the ITACA system) at different stages of melting and how to improve them by using modern and fully automated dosing systems (Itaca OptiDose, ItacaWire and ItacaStream). Special attention was paid to the minimum temperature of the eutectoid. The change of its value after the modification process, its influence on the quality of the melted metal, a very strong correlation with the number of nuclei and the number of graphite precipitations in the casts were shown

Assessment of health behaviours in family nurses

Introduction. Health behaviours are understood as any behaviours (habits, attitudes, customs, values) that are concerned with health. Pro-health behaviours are all deliberate activities aimed at maintaining or improving health. Aim. The aim of the research was the determination of health behaviours in family nurses. Material and method. The research was performed in 152 family nurses from the Lublin and Mazovian Region by means of Health Behaviour Inventory (the HBI). The research tool comprises 24 items in four categories: proper eating habits, preventive health behaviours, health practices, positive attitude. Results. The mean value of health behaviours indicator in the group researched was 85.86 points. A total of 49.34% of nurses presented a high level of health behaviours. The group of 40.97% of family nurses were individuals who depicted a moderate level of health behaviours. Merely 9.87% of the nurses researched showed a low level of health behaviours. On the basis of the analysis of the data collected it was found that preventive health behaviours were rated the highest (3.76 points), whereas health practices were rated the lowest (3.36 points). Proper eating habits and positive attitude were determined on a very similar level. Conclusion. The family nurses researched showed moderate level of health behaviours. The best results were obtained in preventive health behaviours, whereas health practices were rated the lowest. Professional experience of the nurses affected their health behaviours in terms of preventive behaviours

Self-assessment concerning the quality of life among family nurses

Abstract Introduction. Due to the numerous responsibilities, perceived accountability and significant psychophysical workload, there is a decrease in self-assessment concerning the quality of life among nurses of various specializations. The level of quality of life depends on various factors, which impact is individually dependent according to one’s subjective perception. Aim. The aim of the research was to determine the self-assessment concerning the quality of life among family nurses. Materials and method. The group of respondents consisted of 152 professionally active family nurses. The quality of life was examined with a standardized tool: the WHOQOL-Bref scale. Results. The examined family nurses rated their quality of life at an average of 3.79±0.78, while the self-assessment regarding their health amounted to the average of 3.69±0.84. The highest marks were received by the social field (72.25±18.44) among respondents. They slightly lower rated the physical domain (69.59 ±14.46) as well as the environmental domain (66.46±13.08). Whereas, the lowest rating was assigned to the psychological domain (59.96±12.13). Conclusion. The self-assessment concerning the quality of life among family nurses is characterized as on an average level. The age of the respondents significantly differentiates the quality of life of the researched occupational group. Moreover, along with an increase in vocational education, the quality of life perception of the nurses’ increases. Key words: quality of life, family nurse

Raport końcowy z badania ewaluacyjnego pn. Ocena wpływu realizacji polityki spójności perspektywy 2004-2006 na zwiększenie możliwości rozwoju społeczno-gospodarczego regionów Polski wschodniej

Polish Abstract: Niniejszy raport stanowi podsumowanie badania ewaluacyjnego pt. „Ocena wpływu realizacji polityki spójności perspektywy 2004-2006 na zwiększenie możliwości rozwoju społeczno-gospodarczego regionów Polski wschodniej", realizowanego na zlecenie Departamentu Koordynacji Polityki Strukturalnej Ministerstwa Rozwoju Regionalnego. Badanie przeprowadzono w okresie od 21 sierpnia 2009 r. do 15 kwietnia 2010 r. na terenie pięciu województw Polski wschodniej: lubelskiego, podlaskiego, podkarpackiego, warmińsko-mazurskiego oraz świętokrzyskiego. Celem głównym badania była ocena realizacji polityki spójności w perspektywie 2004-2006 w regionach Polski wschodniej pod kątem zwiększenia ich możliwości i dynamiki rozwoju społeczno-gospodarczego. Analiza objęła zarówno ocenę wpływu projektów realizowanych w czasie poprzedniego okresu programowania (2004-2006) w ramach Sektorowych Programów Operacyjnych (ocena m.in. pod względem tnvalości efektów projektów, komplementamości prowadzonych działań), jak i ocenę efektów wdrażania (skala realizowanych przedsięwzięć, wartość finansowa) oraz ocenę systemu koordynacji działań (ocena sprawności systemu wspomagającego i wdrażającego interwencje w ramach NPR na terenie wojewckiztw Polski wschodniej). W tym celu badaniem objęto krajowe, regionalne i lokalne dokumenty programowe i strategiczne, jak również wnioski o dofinansowanie i sprawozdania z realizacji projektów przeprowadzonych na obszarze Polski wschodniej zakończonych do dnia 31.12.2008 r. English Abstract: This report is a summary of the evaluation study entitled "Assessment of the impact of cohesion policy implementation in the 2004-2006 perspective on increasing the opportunities for socio-economic development of Eastern Poland regions", implemented at the request of the Department of Structural Policy Coordination of the Ministry of Regional Development .The study was conducted from August 21, 2009 to April 15, 2010 at in five provinces of eastern Poland: Lublin, Podlasie, Podkarpacie, Warmian-Masurian and Świętokrzyskie. The main objective of the study was to assess the implementation of cohesion policy in the 2004-2006 perspective in the regions of Eastern Poland in terms of increasing their opportunities and dynamics of socio-economic development. The analysis covered both the assessment of the impact of projects implemented during the previous programming period (2004-2006) under Sectoral Operational Programs (evaluation in terms of durability of project effects, complementarity of activities), as well as assessment of implementation effects (scale of implemented projects, value financial) and evaluation of the system of coordination of activities (assessment of the efficiency of the system supporting and implementing interventions under the NDP in the Voivodeships of eastern Poland). To this end, the study covered national, regional and local program and strategic documents, as well as applications for co-financing and reports on the implementation of projects carried out in Eastern Poland completed until December 31, 2008

The Influence of Ambient Temperature on RC Tank Walls Watertightness in Research and Theory

The article presents a detailed comparison of two calculation models with Eurocode Standard guidelines. The stress has been put on defining the amount of reinforcement necessary to reduce the width of cracks resulting from imposed deformations in various ambient conditions. With the help of dierent approaches, the article presents the influence of the atmospheric factor on crack occurrence and crack width. Moreover, the calculation results are compared with the actual cracking during experimental investigations of RC tank wall segments. Adopting this approach it was possible to evaluate the eciency of calculation models pertaining to the analysis of the influence of imposed deformations on cracking in maturing concrete. The way of crack calculation defined in Eurocode Standard, in case of tank walls concreted in the first stage, leads to underestimating crack width in comparison with the crack width observed during experimental investigations