184,099 research outputs found
Dataset for Low-loss silicon core fibre platform for mid-infrared nonlinear photonics
No full textThis dataset provides the data for the figures in the following paper: Ren, Haonan, Shen, Li, Runge, Antoine F. J., Hawkins, Thomas W., Ballato, John, Gibson, Ursula and Peacock, Anna (2019) Low-loss silicon core fibre platform for mid-infrared nonlinear photonics. Light: Science & Applications</span
Prof. Th. W. Adorno and the author Hans Erich Nossack.
No full textProf. Th. W. Adorno and the author Hans Erich Nossack at a reception of Insel Verlag, Buchmesse Frankfurt 1966LB
Fluctuating hydrodynamics model for homogeneous and heterogeneous vapor bubble nucleation
No full textAt the molecular scale, even in conditions of thermodynamic equilibrium, the fluids do not exhibit a deterministic behavior. Going down below the micrometer scale, the effects of thermal fluctuations play a dominant role in the dynamics of the system, calling for a suitable description of thermal fluctuations. These models not only play an important role in physics of fluids, but a deep understanding of these phenomena is necessary for the progress of some of the latest nanotechnology. For instance the modeling of thermal fluctuations is crucial in the design of flow micro-devices, in the study of biological systems, such as lipid membranes, in the theory of Brownian engines and in the development of artificial molecular motor prototypes. Another problem with a huge technological impact is the phenomenon of nucleation – the precursor of the phase transition in metastable systems – in this context related to bubble formation in liquid-vapor phase transition. Vapor bubbles form in liquids by two main mechanisms: boiling, by increasing the tempe- rature over the boiling threshold, and cavitation, by reducing the pressure below the vapor pressure threshold. The liquid can be held in these metastable states (overheating and tensile conditions, respectively) for a long time without forming bubbles. Bubble nucleation is indeed an activated process, requiring a significant amount of energy to overcome the free energy barrier and bring the liquid from the metastable conditions to the thermodynami- cally stable state where vapor is observed. Depending on the thermodynamic conditions, the nucleation time may be exceedingly long, the so-called "rare- event" issue. Nowadays molecular dynamics is the unique tool to investigate such thermally activated processes. However, its computational cost limits its application to small systems (less than few tenth of nanometers) and to very short times, preventing the study of hydrodynamic interactions. The latter effects are crucial to understand the cavitation phenomenon in its entirety, starting from the vapor embryos nucleation up to the macroscopic motion.
In this thesis a continuum diffuse interface model of the two-phase fluid has been embedded with thermal fluctuations in the context of the so-called Fluctuating Hydrodynamics (FH) and has been exploited to address cavitation. This model provides a set of partial stochastic differential equations, whose deterministic part is represented by the capillary Navier-Stokes equations and reproducing the Einstein-Boltzmann probability distribution for the macroscopic fields. This mesoscale approach enables the description of the liquid-vapor transition in extended systems and the evaluation of bub- ble nucleation rates in different metastable conditions by means of numerical simulations. Such model is expected to have a huge impact on the understanding of the nucleation dynamics since, by reducing the computational cost by orders of magnitude, it allows the unique possibility of investigating systems of realistic dimensions on macroscopic time scales. In addition, after the nucleating phase, the deterministic equations have been used to address the collapse of a cavitation nanobubble near a solid boundary, showing an unprecedented description of interfacial flows that naturally takes into account topology modification and phase changes (both vapor/liquid and vapor/supercritical fluid transformations)
Nowe spojrzenie na planowanie architektury mieszkaniowej w afryce subsaharyjskiej
No full textThe author shares his reflections on state of art in housing and urban planning, deficiencies, expectations and possibilities in the Sahel region of Africa. He notices, that the housing problem in Africa is one of the challenges, which should be solved in order to recover life dignity of African people and secure their rights to traditional family life in acceptable conditions. The paper describes the studies on the typical dispersed urban structures and the need to foster this type of settlement structure and proposals of introduction of new on light steel frame housing system in the area of Sahel, combining the traditional way of building houses with modern technology. The particularly analysed case, is the housing problem in the Republic of Chad. The author presents the basic discussion on this topic and his architectural proposals. Unfortunately, the gap between the needs and the financial feasibility of housing construction in this area, makes this project already at the starting point extremely difficult to be realized without external subventions.Problem mieszkaniowy w Afryce jest jednym z wyzwań, które należy rozwiązać, aby Afrykanie mogli odzyskać godność życiową i zabezpieczyć swoje prawa do tradycyjnego życia rodzinnego w akceptowalnych warunkach. W artykule opisano badania nad typowymi rozproszonymi strukturami miejskimi i potrzebą wspierania tego typu struktur osadniczych oraz propozycji wprowadzenia nowego systemu konstrukcji domów, opartym na lekkim szkielecie stalowym, łączącym tradycyjny sposób budowania domów z nowoczesną technologią. Przypadkiem szczególnie analizowanym jest problem mieszkaniowy w Republice Czadu. Autor przedstawia podstawową dyskusję na ten temat i swoje propozycje architektoniczne. Niestety luka między potrzebami mieszkaniowymi w Czadzie a finansową wykonalnością budownictwa mieszkaniowego w tym obszarze sprawia, że projekt ten, już w punkcie wyjścia, jest niezwykle trudny do realizacji bez uzyskania zewnętrznych dotacji
Pseudharpinia antarctica Ren 1991
No full textPseudharpinia antarctica Ren, 1991 Ren, 1991 in Ren and Huang, 1991: 190, 274 –276, 297, 315– 316, fig. 55. De Broyer and Jażdżewski, 1993: 85. Valério-Berardo and Piera, 2006: 75, 81. Distribution: W South Shetland Islands: King George Island, 62 °06.8’S 58 °23.5’W, 400 m (bottom: sand, mud with rock); 62 °14.4’S 58 °51.7’W, 345 m (bottom: mud, sand); 62 °12.2’S 58 ° 55 ’W, 110 m (bottom: mud with rock) (R&H 91). Depth range: 110– 400 m. Type-locality: South Shetland Islands: King George Island, 62 °06.8’S 58 °23.5’W, 400 m (bottom: sand, mud with rock) (R&H 91). Ecology: Collected from mud, sand, rocks. Type material location: IOQ, Qingdao. Remarks: See remarks under Pseudharpinia dentata.Published as part of Alonso, Gloria M., Pina, De, Rauschert, Martin & Broyer, Claude De, 2008, A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data, pp. 1-40 in Zootaxa 1752 on pages 27-28, DOI: 10.5281/zenodo.18174
Seeing the world anew : the radical vision of Martin Waldseemüller's 1507 & 1516 world maps /
No full text9781929154470 (ISBN). 192915447X (ISBN). First edition 2012. Accompanied by 2 foldeds map in front and back pockets: 1507 map -- 1516 map.; Includes bibliographical references: pages 98-107.; Maps from pockets also available online http://nla.gov.au/nla.map-vn6254227; Original version of the 1507 map: Universalis cosmographiae secundum Ptholomaei traditionem et Americi Vespucii alioru que lustrationes. [St. Dié, France? : s.n., 1507]; Original version of the 1516 map: Carta marina, navigatoria Portugallen, navigationes atque tocius cogniti orbis terre marisque formam naturamq[u]e situs et terminos nostris temporibus recognitos et ab antiquorum traditione differentes eciam quor[um] vetusti non meminerunt auctores hec generaliter indicat / consumatum est in oppido S. Deodati compositione et digestione Martini Waldseemuller Ilacomili. [St. Dié, France? : s.n., 1516]. Prologue: In a Renaissance Vision, a Glimpse of the Modern / John W. Hessler -- "An island surrounded on all sides by sea" : The World Map, 1507 / John W. Hessler -- "Land of Cuba, part of Asia" : The Carta marina, 1516 / Chet Van Duzer -- Epilogue: A Renaissance That Resonates Still / John W. Hessler -- Notes -- Afterword / Ralph E. Ehrenberg -- About the authors -- Acknowledgments -- The Maps: The 1507 World Map, 12 sheets, with commentary -- Composite: front pocket -- The 1516 Carta marina, 13 sheets, with commentary -- Composite: back pocket
Klimat społeczny w szkole inkluzyjnej
No full textAuthor presented in this paper theoretical approach to the building of social climate in an inclusive school. The publication indicatessome tendencies and directions of changes to improve the functioning of these institutions and to implement the idea of inclusive education.Autorka przedstawiła w artykule teoretyczne ujęcie zagadnienia związanego z budowaniem klimatu społecznego w szkole inkluzyjnej. W publikacji ukazano pewne dążenia i kierunki zmian, jakich należy dokonywać w masowych szkołach, aby poprawić jakość funkcjonowania tych placówek, tak by kierowały się one ideą edukacji włączającej
Protective effect of resveratrol against renal oxidative stress in cholestasis
No full textThis experimental study was designed to evaluate histological changes of the kidney and renal tissue levels of malondialdehyde (MDA), reduced glutathione (GSH), and nitric oxide (NO) and the effect of resveratrol on these metabolites after bile duct ligation in rats. Methods. Secondary biliary cirrhosis was induced by bile duct ligation for 28 days. Swiss albino rats were divided into three groups. Group 1: Sham (n = 7), Group 2: Bile duct ligation (n = 7), Group 3: Bile duct ligation plus resveratrol (n = 7). Bile duct ligation (BDL) plus resveratrol group received 10 mgr/kg dose of resveratrol intraperitoneally daily throughout 28 days. Kidney tissues were harvested to determine the tissue levels of MDA, GSH, and NO activity. Liver and kidney tissues were removed for light microscopic evaluation. Results. Cholestasis was determined by biochemical and pathologic examination. In the resveratrol-treated rats, levels of MDA were significantly lower than those of the BDL group (p < 0.04). The levels of GSH in the resveratrol-treated rats were significantly higher than those in the BDL group (p < 0.01). The levels of NO in the resveratrol group were significantly lower than those in the BDL group (p < 0.01). Conclusion. The present study demonstrates that intraperitoneal administration of resveratrol in bile duct ligated rats maintains antioxidant defenses and reduces kidney oxidative damage. This effect of resveratrol may be useful in the preservation of renal oxidative stress in cholestasis
Ewolucja programowa FDP w polityce wschodniej w latach 1949-1969 w świetle nowych zasobów Archiwum Niemieckiego Liberalizmu
No full textZasadniczym celem artykułu jest analiza działalności programowej FDP w polityce wschodniej Republiki Federalnej Niemiec w latach 1949-1969. Autor wykorzystał nowe zasoby Archiwum Niemieckiego Liberalizmu w Gummersbach, co umożliwiło przedstawienie nowej oceny wpływu FDP na politykę wschodnią Republiki Federalnej Niemiec.The main goal of the article is to analyze the FDP's program activities in the eastern policy of the Federal Republic of Germany in the years 1949-1969. Of great importance here is the fact that the author used in this work new archives from the Archives of German Liberalism in Gummersbach. This enabled him to present a new assessment of the FDP's impact on the eastern policy of the Federal Republic of Germany
Zasady szacowania gruntów w postępowaniach scaleniowych w Polsce
No full textThe subject of the study was the principles of land estimation used for the purpose of consolidation
proceedings, as they are applied in Poland.
The work examines the legal conditions relating to the estimation of land for the purposes of
consolidation. Documents prepared in the years 2005–2017 concerning land estimation (resolutions
of the consolidation participants, and protocols from the value estimates) have been
collected for 41 consolidated sites, located in 28 districts of 11 voivodships (regions). A survey
was conducted among the surveyors-designers of the consolidation proceedings, consisting of
19 questions. In the current year, the co-author of the present article was present at meetings of
consolidation proceedings’ participants, convened in order to determine the rules for estimating
land value on two sites located in different regions, and the material she collected during those
meetings was used in the article.
The collected data were subjected to an analysis, which showed that within Poland there is no
homogeneity in the method of estimating land value for the purpose of consolidation proceedings,
and that the method used to determine the value of land, taking into account the 1-hectare
estimated rate, and the price of 1dt of rye grain, according to the provisions of the agricultural
tax, is incompatible with the principles for the valuation of agricultural real estate, as specified in
the law on real estate management.Przedmiotem badań były zasady szacowania gruntów stosowane w postępowaniach scaleniowych w Polsce.
W ramach pracy przeanalizowano uwarunkowania prawne odnoszące się do szacunku gruntów na potrzeby scaleń. Zebrano dokumentację sporządzoną w latach 2005-2017 dotyczącą szacunku gruntów (uchwały uczestników scalenia i protokoły z przeprowadzonego szacunku) dla 41 obiektów scaleniowych, położonych na terenie 28 powiatów z 11 województw. Przeprowadzono ankietę wśród geodetów-projektantów scaleń, składającą się
z 19 pytań. Współautorka artykułu w bieżącym roku była obecna na spotkaniach uczestników scalenia, zwołanych w celu ustalenia zasad szacowania gruntów na dwóch obiektach, zlokalizowanych w różnych województwach i zebrane materiały dotyczące tych spotkań wykorzystane zostały w artykule.
Zgromadzone dane poddano analizie, która wykazała, że w Polsce nie ma jednolitości
w sposobie szacowania gruntów na potrzeby postępowań scaleniowych oraz że stosowany sposób określania wartości gruntów z uwzględnieniem stawek szacunkowych 1 ha oraz ceny 1dt żyta wg przepisów o podatku rolnym jest niezgodny z zasadami wyceny nieruchomości rolnych określonymi w ustawie o gospodarce nieruchomościami
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