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Tytuł:
Alpha taxonomy of the Russian Permian procolophonoid reptiles
Autorzy:
Saila, L.K.
Powiązania:
https://bibliotekanauki.pl/articles/22010.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
taxonomy
Russia
Permian
procolophonoid reptile
Procolophonoidea
Parareptilia
Procolophonidae
paleobiogeography
Opis:
European Russia has been the source of many procolophonoid taxa from both the Permian and Triassic, and a Permian origin for the procolophonoid family Procolophonidae has been based on the Russian taxon Microphon exiguus. Recently, this taxon was reclassified as a seymouriamorph and, in its place, the taxa Nyctiphruretus, Suchonosaurus, and Kinelia from the Middle and Upper Permian of Russia were suggested as “procolophons”, using evolutionary−systematic classification methods. In recent phylogenies, however, Nyctiphruretus has been recovered as a non–procolophonoid parareptile, whereas Kinelia and Suchonosaurus have never been included in a phylogenetic study. Re−examination indicates that Suchonosaurus is a member of the procolophonoid subfamily Procolophonidae based on the shape of the maxillary bone and the external naris, the laterally visible maxillary depression, and the number and type of maxillary teeth. Kinelia, on the other hand, is excluded from the Procolophonoidea because of its subpleurodont dental attachment and lack of any procolophonoid features. Thus, Suchonosaurus is the only confirmed Permian procolophonid from the Permian of Russia. Additionally, re−examination of the holotype of Microphon exiguus confirms that it is identical to the seymouriamorph specimens recently included in the genus Microphon and that it lacks procolophonoid features. The earliest unequivocal record of the subfamily Procolophonidae is confirmed from the Late Permian of Russia, making Russia the only region where, with certainty, both Permian and Triassic procolophonids have been discovered.
Źródło:
Acta Palaeontologica Polonica; 2009, 54, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane czynniki przyrodnicze kształtujące budownictwo mieszkaniowe we współczesnych miastach
The impact of natural factors on the process of housing architecture design in contemporary cities
Autorzy:
Mazur, L.K.
Powiązania:
https://bibliotekanauki.pl/articles/2083958.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Opis:
Celem niniejszej pracy jest usystematyzowanie wiedzy na temat czynników przyrodniczych oddziałujących na projektowane środowiska mieszkaniowe we współczesnych przestrzeniach zurbanizowanych. W pracy omówiono czynniki przyrodnicze: klimat i jego zmiany, istniejącą roślinność, wody powierzchniowe oraz rzeźbę terenu. Wpływ przedstawionych czynników na jakość projektowania architektonicznego zilustrowano przykładami współczesnych realizacji zabudowy mieszkaniowej. Skonfrontowanie wiedzy teoretycznej z praktyką projektową pozwoliło na otrzymanie pogłębionych analiz. Przeprowadzone badania niereaktywne (analiza treści i metoda desk research) dowodzą, że znaczący wpływ na jakość projektowanego budynku mieszkalnego mają czynniki przyrodnicze. Uwzględnienie tych czynników podczas projektowania środowiska mieszkaniowego może znacząco poprawić jakość życia jego użytkowników.
The aim of this work is to systematize the knowledge about natural factors that affect the designed housing environments in modern urban spaces. The work will discuss natural factors: climate, climate change, existing vegetation, surface waters and landforms. The impact of presented factors on architecture design will be supported by examples of contemporary residential projects. By confronting the knowledge gained from theoretical works with the design practice, it was possible to perform in-depth analyses of the problem. The conducted non-reactive research, i.e. content analysis and desk research method, proves that natural factors have a significant impact on the quality of the designed residential building. Taking these factors into account when designing residential environment can significantly improve the quality of life of its inhabitants.
Źródło:
Acta Scientiarum Polonorum. Architectura; 2020, 19, 2; 83-91
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Circular economy in housing architecture: methods of implementation
Gospodarka obiegu zamkniętego w architekturze mieszkaniowej: analiza metod wdrożenia
Autorzy:
Mazur, L.K.
Powiązania:
https://bibliotekanauki.pl/articles/2084045.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
architecture
housing
city
building disassembly
eco-innovation
circular economy
Opis:
The aim of the article is an analysis of the possibility of introducing housing construction into a more sustainable and ecological level, through the concept of circular economy (CE) in the construction industry. Housing is an important part of the economy and construction sector. Development of this sector results from a growing population in urban areas and the need of modernization of existing residential buildings. Contemporary realizations of housing environments should consider the reduction of the negative impact on the natural environment. This is possible to achieve by reducing the use of natural resources and start using recycled materials. This assumption belongs to the basic CE task, which allows a recirculation of building materials. To discuss the basic work, the assumptions used a non-reactive desk research method. The review of scientific publications and reports included a subject: (i) concept of CE, (ii) CE in construction sector, (iii) CE in housing construction. The second part of the study analysed innovative ways of using recycled materials and their implementation in new building materials (used in residential construction). Eco-innovation overview includes: (i) bricks from plastic waste, (ii) 3D printing of buildings from recycled materials, (iii) facade plates made of recycling materials. In discussion, the research revealed a number of barriers preventing the effective implementation of CE in the construction industry. The discussion indicates three potential barriers to the implementation of CE in housing environments: (i) social responsibility of the construction industry, (ii) recycling of building materials, (iii) building material resulting from recycling. Final paper conclusions confirming the rightness to implement CE concept in housing construction, thanks to which it will be possible to reduce the negative impact on the environment.
Źródło:
Acta Scientiarum Polonorum. Architectura; 2021, 20, 2; 65-74
1644-0633
Pojawia się w:
Acta Scientiarum Polonorum. Architectura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the Flight Loads Spectra of Two Business Jets
Autorzy:
Kliment, L. K.
Rokhsaz, K.
Powiązania:
https://bibliotekanauki.pl/articles/97863.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
load spectrum
derived gust velocity
business jet operations
Opis:
Operational flight loads have been analyzed from two business jets, a Global 5000 and a Global Express XRS. It is shown that both airframes were subjected to nearly the same number of ground-air-ground cycles, even though the flight times were much different. Flights have been divided into various phases, and loads and turbulence data have been categorized by altitude bands within each phase. Cumulative occurrences of incremental vertical gust load factors have been compared and shown to be comparable for the two airframes. Maneuver load factors have been shown to spread over a wider range of values for the 5000 in every phase. This has been confirmed through comparison of combined loads with those from a CRJ100 and an ERJ-145XR. Derived gust velocities, obtained from the load factors are presented in the form of exceedance spectra. These results from both aircraft are shown to agree well.
Źródło:
Fatigue of Aircraft Structures; 2014, 6; 5-20
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic analysis of a new dual evaporator CO2 transcritical refrigeration cycle
Autorzy:
Abdellaoui, E. Y.
Kairouani, L. K.
Powiązania:
https://bibliotekanauki.pl/articles/240198.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CO2
energy
refrigeration
ejector
exergy
energia
chłodzenie
ejektor
egzergia
Opis:
In this work, a new dual-evaporator CO2 transcritical refrigeration cycle with two ejectors is proposed. In this new system, we proposed to recover the lost energy of condensation coming off the gas cooler and operate the refrigeration cycle ejector free and enhance the system performance and obtain dual-temperature refrigeration simultaneously. The effects of some key parameters on the thermodynamic performance of the modified cycle are theoretically investigated based on energetic and exergetic analysis. The simulation results for the modified cycle indicate more effective system performance improvement than the single ejector in the CO2 vapor compression cycle using ejector as an expander ranging up to 46%. The exergetic analysis for this system is made. The performance characteristics of the proposed cycle show its promise in dual-evaporator refrigeration system.
Źródło:
Archives of Thermodynamics; 2017, 38, 1; 39-62
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł

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