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Tytuł:
Topology optimization without volume constraint – the new paradigm for lightweight design
Autorzy:
Nowak, Michał
Boguszewski, Aron
Powiązania:
https://bibliotekanauki.pl/articles/2086857.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
topology optimization
lightweight design
biomimetic structural optimization
optymalizacja topologii
konstrukcja lekka
biomimetyczna optymalizacja strukturalna
Opis:
In the paper the new paradigm for structural optimization without volume constraint is presented. Since the problem of stiffest design (compliance minimization) has no solution without additional assumptions, usually the volume of the material in the design domain is limited. The biomimetic approach, based on trabecular bone remodeling phenomenon is used to eliminate the volume constraint from the topology optimization procedure. Instead of the volume constraint, the Lagrange multiplier is assumed to have a constant value during the whole optimization procedure. Well known MATLAB topology based optimization code, developed by Ole Sigmund, was used as a tool for the new approach testing. The code was modified and the comparison of the original and the modified optimization algorithm is also presented. With the use of the new optimization paradigm, it is possible to minimize the compliance by obtaining different topologies for different materials. It is also possible to obtain different topologies for different load magnitudes. Both features of the presented approach are crucial for the design of lightweight structures, allowing the actual weight of the structure to be minimized. The final volume is not assumed at the beginning of the optimization process (no material volume constraint), but depends on the material’s properties and the forces acting upon the structure. The cantilever beam example, the classical problem in topology optimization is used to illustrate the presented approach.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 4; e137732, 1--8
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Method of Transferring Topology Optimization Results Directly to the CAD System Database
Autorzy:
Łyduch, Konrad
Łukaszyk, Jacek
Nowak, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2022380.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
topology optimization
CAD
transferring results
three-dimensional structures
automated system
Opis:
The article presents a method of transferring topological optimization results directly to CAD system. The devel- oped method is based on sequential removal and addition of material, ignoring lesser fragments of the model. The input data includes coordinates of nodes imported from the model of finite element method optimized object. The algorithm is able to recognize geometry patterns during material addition and subtraction. Based on the results of the recognition process, individual 3D features are placed in CAD design tree (like „Feature Manager” design tree in Solidworks, used in the procedure described in the article below). Thus, the described algorithm allows for convenient and quick editing of transferred geometry of the optimized object directly in the CAD environment. The algorithm was tested on various examples of 2D and 3D models. The execution code of the presented method was written in Python programming language, and the macro for the CAD program was written in VB.NET. The proposed solution is independent of the optimizer used.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 1; 243-252
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancement of Executive Control through Short-term Cognitive Training: Far-transfer Effects on General Fluid Intelligence
Autorzy:
Nęcka, Edward
Wujcik, Radosław
Nowak, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2128622.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive training
executive control
intelligence
Opis:
We predicted that short-term training of executive control would improve both cognitive control itself (Hypothesis 1) and general fluid intelligence (Hypothesis 2). We randomly assigned 120 high school students to the experimental and control groups. The former underwent a 14-day training of four executive functions: interference resolution, response inhibition, task switching, and goal monitoring. The latter did not train anything. The training significantly improved cognitive control and IQ. The control group also improved their IQ scores but gained less than the experimental one. However, the amount of IQ scores enhancement did not correlate with the majority of indices of the training effectiveness, thus justifying the supposition that such enhancement resulted from the general effect of participation in the training rather than from the improvement of executive functions underlying Gf.
Źródło:
Polish Psychological Bulletin; 2017, 1; 72-78
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recharge and drainage of lakes in the Powidzki Landscape Park in conditions of increased anthropogenic and environmental pressure (central-western Poland)
Autorzy:
Nowak, Bogumił Michał
Przybyłek, Jan
Powiązania:
https://bibliotekanauki.pl/articles/2058553.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
surface resources
groundwater resources
hydraulic contacts
water level changes
mining dewatering
evapotranspiration
Gniezno Lakeland
Opis:
The lakes of the Powidzki Landscape Park (Gniezno Lakeland) are known for their natural and recreational values. The majority of them are located within two large glacial tunnel valleys, that in many places cut through several levels of till and inter-till aquifers. Regional hydraulic linkage systems are developed where surface water and groundwater remain in direct contact. Smaller water bodies occur between the lakes, in other tunnel valleys, in isolated meltwater basins, or in river valleys. These water bodies constitute local drainage bases. The existence in the area of such morphologically diverse lakes with different flow rates, varied morphology, and heterogeneous geological structure permitted tracing of the hydrodynamic dependencies of lake catchments of various types. Hydrogeological cross-sections, comparative analyses of structural maps for successive aquifers, bathymetric plans of lakes, and piezometric contour maps were prepared. Surface and groundwater level fluctuations were investigated, as well as their response to changing atmospheric conditions. Water balances of lakes were also determined for selected lake catchments. The study showed that all the lakes analysed are closely related to groundwater, and that the deepest ones reach lower aquifers. The majority of the lakes drain the aquifers, but some of the lakes feed them. Such a situation was documented in coastal wetlands and in the eastern part of the Park, affected by a depression cone associated with a nearby lignite opencast mine. The study showed that the deepest of the lakes analysed have a very wide catchment area of groundwater recharge, expanding beyond the boundaries of their surface catchment areas. This is important for the development of their resources, especially in periods of hydrogeological low flow.
Źródło:
Geological Quarterly; 2020, 64, 1; 205--219
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NAS-50 and NAS-40: New scales for the assessment of self-control
Autorzy:
Nęcka, Edward
Wujcik, Radosław
Orzechowski, Jarosław
Gruszka, Aleksandra
Janik, Beata
Nowak, Michał
Wójcik, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/430784.pdf
Data publikacji:
2016-09-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
self-control
questionnaire
scale
self-report
other-report
psychological assessment
Opis:
In this paper, we present a new questionnaire for the assessment of self-control as an individual trait. We describe the process of construction of this assessment tool. We also report the results of relevant validation studies. The questionnaire has two independent versions, one based on self-reports (NAS-50) and another one based on other-reports (NAS-40). The first version consists of five subscales (10 items each), called Initiative and Persistence (IP), Proactive Control (PC), Switching and Flexibility (SF), Inhibition and Adjournment (IA), and Goal Maintenance (GM). Seven samples of participants (N = 934 altogether) took part in the validation study. The second version has not been split into subscales. Both versions obtained satisfactory indices of internal consistency, assessed with Cronbach’s alpha (for NAS- 50 total score a = .861, for the subscales a between .726 and .867; for NAS-40 a = .844). The NAS-50 and NAS-40 scores were highly correlated with other measures of self-control, including Tangney, Baumeister, and Boone’s (2004) self-control scale. They also proved to be entirely independent of general intelligence. In conclusion, both versions can be regarded reliable and valid enough, and therefore suitable for the assessment of trait self-control for research purposes.
Źródło:
Polish Psychological Bulletin; 2016, 47, 3; 346-355
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Employment in schizophrenia –students’ point of view
Autorzy:
Zaprutko, Tomasz
Kopciuch, Dorota
Sawicka, Dominika
Majchrzycka, Blanka
Nowak, Michał
Michalak, Michał
Kus, Krzysztof
Nowakowska, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/895547.pdf
Data publikacji:
2018-06-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
schizophrenia
students
employment
European Union
opinions
Opis:
Schizophrenia is a serious mental disorder and has a huge economic burden related to direct and indirect costs. Direct costs include such expenditure as hospitalization. Indirect costs, however, result mostly from the loss of productivity. Although patients are frequently interested in job opportunities, unemployment is widespread among them. Thus, we evaluated opinions of medical universities students’ concerning situation on the labor market among those in the remission stage of schizophrenia. The study was carried out between October 2015 and October 2016 in Poland and other European Union countries using a self designed questionnaire. The study tool consisting of five questions was distributed to students by direct contact and via the Internet. Of a 5200 distributed sheets, we received 1036 questionnaires and 942 were finally analyzed. In the students’ opinion, patients are generally interested in finding a job but they are afraid coming back to work. Although unemployment is common among patients with schizophrenia, the number of patients capable of working is significantly higher than the number of those actually employed. According to results of the study, getting a job might be effectively supported by non-pharmacological interventions. Considering the noticeably higher number of patients capable of working compared to those employed, development of employment possibilities should be a priority for mental health care decision makers. It should lead to reduction of the patients’ concerns related to looking for a job. Moreover, comprehensive treatment could reduce the economic burden of schizophrenia.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 3; 813-818
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acquisition of Field Logistic and Medical Resources in Long-term Rescue Operations
Pozyskiwanie terenowych zasobów logistycznych i medycznych w długotrwałych akcjach ratowniczych
Autorzy:
Chmiel, Michał
Nowak, Eugeniusz
Powiązania:
https://bibliotekanauki.pl/articles/2060794.pdf
Data publikacji:
2020
Wydawca:
Centrum Naukowo-Badawcze Ochrony Przeciwpożarowej im. Józefa Tuliszkowskiego
Tematy:
State Fire Service units
long-term rescue operation
local logistic resources
local medical resources
jednostki Państwowej Straży Pożarnej
długotrwała akcja ratownicza
terenowe zasoby logistyczne
terenowe zasoby medyczne
Opis:
Aim: The aim of this article is to present effective procedures for acquiring logistic and medical field resources, which include appropriate operating procedures for the State Fire Service (SFS) units during the planning of long-term operations and during their execution. Methodology: In both of the above studies, theoretical (analysis, synthesis and analogies) and empirical methods were used in the research process. The latter involved primarily the survey method, including interviews and questionnaires. In an effort to answer the first question, theoretical and empirical methods were used in the research process. Among the theoretical methods, the main ones were: 1) the analytical method, used to critically analyse literature on the organisation of logistic and medical security of military units; 2) the analogy method, was used for the logistic and medical needs of SFS units in long-term rescue operations, based on similarities with the logistic and medical needs of military units in combat operations and injured civilians; 3) the synthetic method, which was used to formulate conclusions (proposals regarding the logistic and medical needs of SFS units in long-term rescue operations) obtained by inductive reasoning and deductive reasoning, as well as by analogy. Results: The study showed many shortcomings (difficulties) related to the acquisition of field resources, which occurred in long-term rescue operations conducted so far in Poland. The main ones were caused by the lack of appropriate regulations regarding: financing rescue operations; division of powers between SFS management and local public administration bodies in acquiring these resources; bonuses for business entities for maintaining readiness to carry out logistic tasks for SFS units. In every system, even a well-organised one, there is certain inertia. The experience of organising logistic and medical security for SFS units in long-term rescue operations conducted in recent decades in Poland indicates that this also applies to acquiring field resources. As a result, a certain amount of time is needed for its full activation. Conclusions: According to the authors, the study results and proposals based on them are innovative. Their application by the State Fire Service may significantly improve the logistic and medical security process of rescue units in long-term operations, and as a consequence increase the effectiveness of conducting these operations.
Cel: Zaprezentowanie skutecznych procedur pozyskiwania zasobów terenowych na potrzeby zabezpieczenia logistycznego i medycznego jednostek Państwowej Straży Pożarnej (PSP) podczas długotrwałych akcji ratowniczych. Wprowadzenie: Długotrwałe akcje ratownicze generują szeroką gamę potrzeb logistycznych i medycznych. Jednak do tych akcji dochodzi relatywnie rzadko (stanowią one od 5 do 10% wszystkich akcji ratowniczych prowadzonych przez jednostki PSP w Polsce). Także ze względów ekonomicznych potencjał logistyczny i medyczny jednostek PSP przystosowany jest do realizacji zadań głównie w działaniach krótkotrwałych, czyli trwających nie dłużej niż 6 godzin. Wskutek tego w długotrwałych akcjach zabezpieczenie logistyczne i medyczne jednostek PSP wymaga skorzystania z terenowych zasobów logistycznych i medycznych (środków zaopatrzenia oraz usług logistycznych i medycznych) pozyskiwanych z gospodarki narodowej. Z analizy i oceny długotrwałych akcji ratowniczych prowadzonych w Polsce w minionych dziesięcioleciach wynika, że w procesie pozyskiwania zasobów terenowych pojawia się wiele mankamentów. Do głównych należą: długi czas uruchamiania dostaw środków zaopatrzenia i uruchamiania usług przez podmioty gospodarcze oraz kłopoty z ich egzekwowaniem w weekendy, opóźnienia w dostawach i usługach, brak procedur ustalania kosztów poniesionych przez podmioty gospodarcze podczas świadczenia tzw. niewymiernych usług logistycznych, konieczność ścisłego przestrzegania postanowień ustawy o zamówieniach publicznych podczas opracowywania planów pozyskiwania zasobów terenowych, brak skutecznych finansowych i pozafinansowych metod motywacji podmiotów gospodarczych – dostawców środków zaopatrzenia oraz świadczących usługi logistyczne. Ponadto sporadyczny charakter akcji długotrwałych powoduje, że organy logistyczne PSP mają relatywnie małe doświadczenie w pozyskiwaniu zasobów terenowych dla potrzeb zabezpieczenia logistycznego i medycznego jednostek PSP. Brakuje przede wszystkim dobrych praktyk związanych z opracowywaniem planów pozyskiwania zasobów terenowych (są one częścią składową planów ratowniczych) oraz procedur ich realizacji w akcjach ratowniczych. Świadczy o tym m.in. bardzo skromna literatura przedmiotu. Głównym źródłem wiedzy w tym zakresie jest bezpośredni przekaz funkcjonariuszy PSP, którzy posiadają doświadczenie w organizowaniu zabezpieczenia logistycznego i medycznego w akcjach długotrwałych. Problem ten można rozwiązać m.in. poprzez wdrożenie do praktyki służbowej PSP odpowiednich procedur pozyskiwania zasobów terenowych z gospodarki narodowej. Dotyczyłyby one działania organów kierowania PSP na etapie planowania akcji długotrwałych oraz w trakcie ich prowadzenia. Metodologia: Zaproponowane w artykule rozwiązania bazują na wynikach badań autorskich, zawartych w literaturze załącznikowej. W trakcie badań stosowano metody teoretyczne (analizy, syntezy i analogii) oraz empiryczne. W ostatnich dominowała metoda sondażowa, a w jej ramach techniki wywiadu i ankietowania. Wnioski: Według opinii autorów propozycje powstałe na podstawie uzyskanych wyników badań mają charakter nowatorski. Stosowanie w praktyce służbowej PSP zaproponowanych rozwiązań w sposób znaczący może usprawnić proces zabezpieczenia logistycznego i medycznego jednostek PSP prowadzących długotrwałe akcje ratownicze. W konsekwencji może pozytywnie wpływać na efektywność prowadzenia tych akcji.
Źródło:
Safety and Fire Technology; 2020, 55, 1; 124--140
2657-8808
2658-0810
Pojawia się w:
Safety and Fire Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laboratory testing as a base for numerical modelling of the high-strength hexagonal wire mesh
Badania laboratoryjne jako podstawa modelowania numerycznego sześciokątnej siatki splatanej wysokiej wytrzymałości
Autorzy:
Grodecki, Michał
Nowak, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/27312139.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
gabion
metoda elementów skończonych
modelowanie numeryczne
siatka splatana
double-twisted mesh
finite element method
numerical modelling
Opis:
This paper presents the results of laboratory testing and Finite Element Method (FEM) modelling of high-strength double-twisted steel hexagonal wire mesh used for constructing gabion cages, slope protection systems, rockfall protection barriers. Gabion cages, filled with soil (usually rock particles) are commonly used in civil engineering (for example, in order to form a retaining wall). Static tensile tests of single wire and double-twisted wire were performed. The stiffness and ultimate tensile strength were examined. Special attention was paid to the double-twist behaviour. The unloading tests were also performed and the range of elastic deformation of both single wire and double-twisted wire were determined. The obtained laboratory results (stress-strain relationships for single wire and double-twisted wire) were included in a numerical model of the repeatable cell of mesh (truss model). The simulation in both directions, parallel and perpendicular to the double twist, was performed. On the basis of the obtained load-strain relationship, an anisotropic membrane model for mesh was proposed and calibrated. The obtained value of tensile strength of the mesh (266 kN/m) is much higher than for other meshes known form literature (30-60 kN/m).
Artykuł przedstawia wyniki badań laboratoryjnych i symulacji numerycznych (wykonanych z wykorzystaniem Metody Elementów Skończonych MES) sześciokątnej stalowej siatki splatanej wysokiej wytrzymałości, wykorzystywanej do budowy koszy gabionowych, zabezpieczania skarp oraz konstrukcji zabezpieczeń przed spadającymi odłamkami skał. Kosze gabionowe, wypełnione przez grunt (najczęściej okruchy skały) są powszechnie wykorzystywane w budownictwie (np. do konstrukcji murów oporowych). Zostały wykonane testy statycznego rozciągania pojedynczego drutu i podwójnego splotu, badano sztywność i wytrzymałość testowanego materiału. Specjalną uwagę zwrócono na zachowanie się podwójnego splotu. Wykonano również testy odciążeniowe, określono zakres sprężystej pracy pojedynczego drutu i podwójnego splotu. Uzyskane zależności naprężenie - odkształcenie wykorzystano do zbudowania modelu numerycznego powtarzalnej komórki siatki (model kratownicowy). Wykonano symulacje rozciągania w kierunku wzdłuż i w poprzek podwójnego splotu. Na podstawie uzyskanych zależności obciążenie - odkształcenie wykalibrowano model membrany anizotropowej. Uzyskana wytrzymałość siatki (266 kN/m) jest znacznie większa niż siatek znanych z literatury (30-60 kN/m).
Źródło:
Archives of Civil Engineering; 2023, 69, 3; 371--384
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
‘We Are Not Just Asking What Poland Can Do for the Polish Diaspora but Mainly What the Polish Diaspora Can Do for Poland’: The Influence of New Public Management on the Polish Diaspora Policy in the Years 2011–2015
Autorzy:
Nowosielski, Michał
Nowak, Witold
Powiązania:
https://bibliotekanauki.pl/articles/2080390.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
diaspora
diaspora policy
New Public Management
diaspora engagement
public administration
Opis:
This article describes and analyses Polish diaspora policy changes in the years 2011–2015. Two decades after the rebirth of the Polonia policy in 1989, it was completely rebuilt. Emphasising values and Poland’s obligations towards the diaspora was replaced by paying more attention to the interests and profitability of this policy. The authors demonstrate how New Public Management (NPM) concepts influenced this shift. Analysis of two different sources – documents programming Polish diaspora policy and interviews with experts and persons designing the Polonia policy – confirmed that NPM principles influenced Polish diaspora policy on five dimensions: organisational restructuring, management instruments, budgetary reforms, participation, marketisation/privatisation.
Źródło:
Central and Eastern European Migration Review; 2022, 11, 1; 109-124
2300-1682
Pojawia się w:
Central and Eastern European Migration Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of a steel frame in a fire situation
Autorzy:
Szczecina, Michał
Nowak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2172408.pdf
Data publikacji:
2022
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
fire
steel frame
modelling
numerical analysis
ogień
rama stalowa
modelowanie
analiza numeryczna
Opis:
In the paper, the stages of modelling of a steel frame under fire conditions were discussed. Numerical computations were performed using SIMULIA Abaqus software. The way of defining and developing the computational model was described. In the numerical procedure adopted in the paper, much attention was paid to formulas related to various types of the model parameters that depend on the fire temperature. The results were shown in a graphic form. They were compared with the results obtained from the analysis, in which the impact of elevated temperatures was disregarded. Based on numerical simulation results, an attempt was made to assess the effect of fire on the steel frame components. The paper is exploratory in character and provides an introduction to the issues related to the modelling of steel structure fires. The numerical modelling of the structure fire described in the paper can have practical potential for structural engineers.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2022, 4; 42--53
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using The Potential Of The Employees Expertise And Awareness Of Occupational Hazards In The Mining Industry
Autorzy:
Nowak-Senderowska, Dagmara
Patyk, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2020900.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
hazard identification
occupational risk assessment
survey
surface mining
identyfikacja zagrożeń
ryzyko zawodowe
ankieta
górnictwo
Opis:
The paper highlights the results of a study that examined the employees' expertise and awareness of occupational hazards in their work environment. The research involved a survey conducted in the form of a short questionnaire among employees responsible for loading and hauling of excavated material in an opencast mine. Among 23 major hazards that were thus identified, there were global hazards (affecting the entire mining process) as well as local, task-specific hazards. Depending on the number of responses, 10 local and 3 global hazards were identified in the analyzed area, involving noise, stress and dust. Active participation of the crew in the risk identification process helped in the assessment of their criticality levels, according to employees carrying out various task, highlighting the benefits of such approach for effective work safety management in a mining company. The conducted research demonstrated yet another goal to be achieved - i.e. the comparison of criticality levels of hazards as identified by employees and those reported in occupational risk assessment reports in the mine
Źródło:
Inżynieria Mineralna; 2021, 2; 598--607
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Access to education in terms of the elimination of architectural barriers – on the example of selected Polish universities located in historic buildings
Autorzy:
Nowak-Pieńkowska, Małgorzata
Brutkowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/27314893.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
historic building
rational improvement
availability
students
people with disabilities
Opis:
Many universities in Poland are based in historic buildings. As public facilities, they must have accessibility for people with disabilities. Therefore, historic buildings undergo regular reconstruction to ensure accessibility on the basis of technical and construction regulations and the Convention on the Rights of Persons with Disabilities. For the purpose of the study, those with exceptional architectural, cultural and historical are presented. The article is concerned with determining the current state of accessibility of selected Polish universities for students with mobility disabilities. The first part of the paper deals with the verification of the background material in the form of statistical data and support programmes for the studied group of users. The second part presents historical information about the historic buildings along with a qualitative analysis of the elements already applied to eliminate architectural barriers. Nine selected historical teaching facilities located both in Warsaw and scattered throughout the country were analysed using the field observation method. The conclusion presents the results indicating the application in the realizations of the principle of rational improvement stating that the preservation of historic value can become paramount to ensuring full accessibility. Still, monuments should be treated individually, and the same applies to disabilities, where each is different and requires individual perception and treatment.
Źródło:
Architecturae et Artibus; 2023, 15, 2; 1--12
2080-9638
Pojawia się w:
Architecturae et Artibus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
VAAFT: a new minimally invasive method in the diagnostics and treatment of anal fistulas – initial results
Autorzy:
Wałęga, Piotr
Romaniszyn, Michał
Nowak, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/1395691.pdf
Data publikacji:
2014-01-01
Wydawca:
Index Copernicus International
Tematy:
anal fistula
surgical treatment
minimally invasive procedure
VAAFT
Opis:
The aim of the study was to present our own experience in the treatment of anal fistulas by means of VAAFT (Video-Assisted Anal Fistula Treatment). Material and methods. Twenty patients were qualified for the VAAFT procedure. All were subjected to diagnostics. Two patients after the diagnostic stage underwent classical fistula surgery. The remaining 18 patients were subjected to the full procedure (diagnostic fistuloscopy, supply of the internal ostium, and coagulation of the fistula canal). The mean observation period was 10 months. Results. In most cases the trans-sphincter fistula was observed during the diagnostic phase, including three with additional fluid compartments. There was one intersphincteric fistula. Considering the 18 patients subjected to the full VAAFT procedure the internal ostium was supplied by means of an advancement flap in 3 cases, while in 11 by means of a mattress suture, including one with additional tissue glue. In 4 cases the internal ostium was tightly covered by mucosa. Surgical complications were not observed during the procedure. During further observation a permanent fistula was observed in 4 (22%) patients, and in two (17%), recurrence of anal fistula. In the remaining 12 patients one observed healing without fistula recurrence. Complications were not observed, including stool and gas control deterioration (based on the FISI scoring). Conclusions. The VAAFT method does not affect sphincter efficiency, no intra- and postoperative complications were observed. As compared to other minimally invasive procedures a comparable recovery rate is observed without the risk of incontinence. It is the only method enabling the intraoperative identification of the internal ostium and fistula canal under visual control. Initial optimistic results require further investigations on a larger group of patients.
Źródło:
Polish Journal of Surgery; 2014, 86, 1; 7-10
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antinociceptive effects of morphine, nefopam, indomethacin and imipramine in rats with lesion of the central serotoninergic system
Przeciwbólowe efekty morfiny, nefopamu, indometacyny i imipraminy u szczurów z lezją ośrodkowego układu serotoninergicznego
Autorzy:
Kőrössy, Eva
Świerszcz, Michał
Nowak, Elżbieta
Beśka, Magdalena
Bałasz, Michał
Nowak, Przemysław
Szkilnik, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/1039982.pdf
Data publikacji:
2009
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
lesion
central serotoninergic system
pain
morphine
nefopam
indomethacin
imipramine
rats
lezja
ośrodkowy układ serotoninerigczny
ból
morfi na
indometacyna
imipramina
szczury
Opis:
The aim of the present study was to examine the eff ect of the central serotoninergic lesion on the antinociceptive eff ects of morphine (5.0 mg/kg sc), nefopam (20 mg/kg ip), indomethacin (5.0 mg/kg ip) and imipramine (10 mg/kg ip) in the model of exteroceptive sensation - formalin test (chemical stimulus), and interoceptive sensation - writhing test (model of visceral pain). Furthermore monoamine synthesis rate after examined analgetics in the frontal cortex, thalamus, brain stem and spinal cord was assayed. MATERIAL AND METHODS On the 3 rd day of postnatal life male rats were administered with 5.7- DHT (70 μg/10 μl in 0.1% ascorbic acid solution ICV; 35 μg/5 μl per side); control animals received vehicle (70 μg/10 μl of 0.1% ascorbic acid solution ICV). Rats continued to be housed until 8-10 weeks, for further experimentation. RESULTS It was shown that the central serotoninergic lesion slightly modifi ed analgesia evoked by nefopam and indomethacin in formalin test but much more profound reduction in analgesia produced by morphine and indomethacin injection was observed in visceral model of nociception. In biochemical study it was shown that analgetics employed in this study (with exception of indomethacin) altered synthesis rate of serotonin (5-HT) and dopamine (DA) in the examined parts of the rats brain. The above indicates that besides serotoninergic pathway other monoaminergic systems (noradrenergic and dopaminergic) participate in the central mechanism of action of these drugs. CONCLUSION It is likely that similar nociception abnormalities may occur in patients with serotoninergic system dysfunction, so that it points out on the requirement of analgetics dosage adjustment.
WSTĘP Celem pracy była ocena wpływu lezji (zniszczenia) ośrodkowego układu serotoninergicznego na przeciwbólowe działanie morfi ny (5.0 mg/kg sc), nefopamu (20 mg/kg ip), indometacyny (5.0 mg/kg ip) i imipraminy (10 mg/kg ip) w testach czucia bólu eksteroceptywnego, tj formalinowym (bodziec chemiczny) a ponadto czucia interoceptywnego, tj. bólu trzewnego w teście wicia. Ponadto zbadano wpływ stosowanych analgetyków na procesy syntezy monoamin w wybranych częściach mózgu (kora przedczołowa, wzgórze, most, rdzeń kręgowy) u szczurów kontrolnych oraz z lezją. MATERIAŁ I METODY Zniszczenie ośrodkowego układu serotoninergicznego wykonano u 3 dniowych noworodków szczurzych stosując dokomorowo 5.7-DHT w dawce 70 μg/10 μl w 0.1% roztworze kwasu askorbinowego. Właściwe testy behawioralne i biochemiczne wykonano po osiągnięciu przez zwierzęta 8 tygodnia życia. WYNIKI Wykazano, że chemiczna lezja ośrodkowego układu serotoninergicznego tylko w niewielkim stopniu modyfi kuje przeciwbólowe działanie nefopamu i indometacyny w modelu bólu zapalnego natomiast wyraźnie osłabia przeciwbólowe działanie morfi ny i indometacyny w modelu bólu trzewnego u szczurów. W badaniach biochemicznych wykazano, że stosowane leki (za wyjątkiem indometacyny) zmieniają szybkość syntezy serotoniny (5-HT) oraz dopaminy (DA) w badanych strukturach mózgu. Powyższe wskazuje, że w ośrodkowych mechanizmach analgetycznego działania stosowanych leków poza układem serotoninergicznym uczestniczą w różnym stopniu inne układy monoaminergiczne, tj. noradrenergiczny i dopaminergiczny. WNIOSKI Uzyskane wyniki przemawiają za tym, że trwała dysfunkcja ośrodkowego układu serotoninergicznego może prowadzić do zmienionej reakcji biologicznej na leki przeciwbólowe.
Źródło:
Annales Academiae Medicae Silesiensis; 2009, 63, 5; 7-24
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of Lift (Ligation of Intersphincteric Fistula Tract) for Complex and Recurrent Anal Fistulas - A Single-Center Experience and A Review of the Literature
Autorzy:
Romaniszyn, Michał
Walega, Piotr Julian
Nowak, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/1395977.pdf
Data publikacji:
2015-02-03
Wydawca:
Index Copernicus International
Tematy:
fistula-in-ano
anal fistula
ligation of intersphincteric fistula tract
LIFT
fistulotomy
Opis:
Ligation of intersphincteric fistula tract in treatment of anal fistulas (LIFT) is being said to have satisfactory results in short and long follow up, with low risk of complications. This study was designed to evaluate the results in patients with complex and recurrent fistulas in comparison with simple transsphincteric anal fistulas. The aim of the study was to present a single-center experience in LIFT procedure in treatment of both simple and complex anal fistulas, including recurrent fistulas, in comparison with a review of current literature. Material and methods. A series of 17 patients were qualified to LIFT procedure. 5 patients were treated for simple transsphincteric, 6 for complex fistulas, 6 with fistulas recurrent after fistulotomy. Median age was 47, most of the patients were male (16/17). Mean follow up was 11 months. Results. Mean operating time was 55 minutes counting from surgical site disinfection to final dressing of the wound. Of the 17 patients the overall success rate was 53%. As expected, best results were achieved in patients with simple fistulas (80% success rate), then complex (50%), and recurrent fistulas (only 33%). There were no early nor late complications of the surgery. Conclusion. As expected, in simple transsphincteric fistulas the results were satisfactory, taking into account low complication rate. Complex and recurrent fistulas seem to be risk factors of LIFT failure. The results are consistent with data published by other authors, based on the review of the current literature, and it seems there is still room for improvement, so further research is required.
Źródło:
Polish Journal of Surgery; 2014, 86, 11; 532-536
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
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