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Wyniki wyszukiwania dla: HISTONE DEACETYLASES
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Ambulatory Systolic Blood Pressure is Related to the Deletion Allele of the Angiotensin I Converting Enzyme Gene in Young Normotensives with Parental History of Hypertension
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Risk criteria for sea-going ships arising from the operation of the main engines' crankshaft - conecting rod - piston systems
PublikacjaIn the article the risk criterion for sea-going ships arising from the operation of the main engines' crankshaft - connecting rod - piston systems is proposed. These criterion is based on the procedures recommended in the Formal Safety Assessment method developed under the auspices of International Maritime Organization (IMO). First of all the collective risk criterion for ship has been proposed. In the next step, the share of...
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An innovative method of measuring the extension of the piston rod in hydraulic cylinders, especially large ones used in the shipbuilding and offshore industry
PublikacjaThe article presents the results of selected works related to the wider subject of research conducted at the Faculty of Mechanical Engineering and Shipbuilding at the Gdańsk University of Technology, regarding designing various on board devices with hydraulic drive for ships and other offshore facilities. One of the commonly used these mechanisms are hydraulic actuators with the measurement of the piston rod extension. The issue...
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Artemisia abrotanum L. (Southern Wormwood)—History, Current Knowledge on the Chemistry, Biological Activity, Traditional Use and Possible New Pharmaceutical and Cosmetological Applications
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Comparing combined gas tubrine/steam turbine and marine low speed piston engine/steam turbine systems in naval applications
PublikacjaPorównano układy napędowe okrętowe kombinowane turbina gazowa- turbina parowa oraz spalinowy okrętowy silnik tłokowy wolnoobrotowy - turbina parowa. Porównywano moce oraz zużycie paliwa oraz parametry pary świeżej układu turbiny parowej.
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Influence of low-temperature physical hardening on stiffness and tensile strength of asphalt concrete and stone mastic asphalt
PublikacjaThis paper presents laboratory testing of stiffness modulus and indirect tensile strength of three asphalt concrete (AC) and three stone mastic asphalt (SMA) mixes after isothermal storage at temperature of -20oC, at different time intervals up to 16 days. The tests under repeated dynamic loading showed physical hardening of all tested mixes which was manifested by an evident increase of their stiffness moduli after isothermal...
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Changes in Epigenetic Patterns Related to DNA Replication in Vicia faba Root Meristem Cells under Cadmium-Induced Stress Conditions
PublikacjaExperiments on Vicia faba root meristem cells exposed to 150 µM cadmium chloride (CdCl2) were undertaken to analyse epigenetic changes, mainly with respect to DNA replication stress. Histone modifications examined by means of immunofluorescence labeling included: (1) acetylation of histone H3 on lysine 56 (H3K56Ac), involved in transcription, S phase, and response to DNA damage during DNA biosynthesis; (2) dimethylation of histone...
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Features of load and wear of main propulsion devices on sea-going ships with piston combustion engines and their impact on changes in technical states of the systems
PublikacjaThe paper presents the specificity of operation of propulsion systems of seagoing ships which causes the need to control the load on them, especially on their engines called main engines. The characteristics of the load on the propulsion systems, especially on the main engines as well as on the shaft lines and propellers driven by the engines, along with the process of wear in tribological joints (sliding tribological systems)...
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The History of the Theory of Structures [Historia teorii konstrukcji] / K.-E. Kurrer. - Berlin : Ernst & Sohn, 2008.- 848 s. :501 rys. - Bibliogr. 1158 poz.
PublikacjaOmówiono angielskojęzyczne dzieło nt. historii teorii konstrukcji jako duże rozszerzenie wcześniejszej jego wersji niemieckojęzycznej. W opinii recenzenta w dziele tym zebrano i uporządkowano obszerny materiał przedmiotu, w dużej mierze - unikatowy.
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Sprawozdanie z konferencji naukowej „Astrobiology and Society. Third Conference on History and Philosophy of Astrobiology”, European Astrobiology Institute – Lund University, Höör, 3-4.06.2022 r.
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Дуальные модели Лотмана и Милоша – в анализах истории России и в автобиографии [Lotman’s and Miłosz’s Dual Models – in Analysis of History of Russia and in Autobiography]
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Dzieje latarni w Twierdzy Wisłoujście w świetle badań architektonicznych z roku 2018 History of the Lighthouse of the Wisłoujście Fortress in Light of a 2018 Architectural Study
PublikacjaW roku 2018 zespół autorski wykonał badania architektoniczne wieży w Twierdzy Wisłoujście w Gdańsku w związku z planowanymi pracami konserwatorskimi. Pierwszy raz podjęto metodologiczne badania architektoniczne najstarszej struktury zespołu – wieży-latarni morskiej wzniesionej w 1482, a następnie rozbudowywanej w wiekach XVI–XX. Wyniki badań oraz weryfikacja źródeł historycznych i archeologicznych pozwoliły zrekonstruować 6 głównych...
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A method for evaluating the performance of a marine piston internal combustion engine used as the main engine on a ship during its voyage in different sailing conditions
PublikacjaPrzedstawiono metodę oceny działania tłokowych silników spalinowych napędu głównego staków morskich, nazywanych silnikami głównymi, działających w typowych warunkach ich eksploatacji. Warunki te zostały opisane z uwzględnieniem pola osiągów tego rodzaju silników. Metoda ta umożliwia obliczenie wartości działania w wyniku zastosowania rachunku całkowego. Znamienne jest to, że działanie wspomnianych silników spalinowych zostało przyrównane...
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Odbiór akustyczny hotelu „Hampton By Hilton” w Gdańsku – Rębiechowie. Zleceniodawca: Mostostal Warszawa S.A., ul. Konstruktorska 11A, 02-673 Warszawa
PublikacjaWykonano pomiary izolacyjności ścian, stropów i drzwi na dźwięki powietrzne oraz zmierzono poziom dźwięków uderzeniowych przenikających przez stropy. Zmierzono poziom zakłóceń zewnętrznych przenikających do pokoi hotelowych (hałas lotniczy) oraz zakłóceń instalacyjnych w budynku (wentylacja i klimatyzacja). Została dokonana regulacja instalacji wentylacyjnej, z uwzględnieniem wymagań Polskiej Normy w zakresie dopuszczalnego poziomu...
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Synthesis, characteristics, and photocatalytic activity of zinc oxide nanoparticles stabilized on the stone surface for degradation of metronidazole from aqueous solution
PublikacjaAbstract Background: The presence of antibiotics such as metronidazole in wastewater even at low concentrations requires searching for a suitable process such as advanced oxidation process (AOP) to reduce the level of pollutants to a standard level in water. Methods: In this study, zinc oxide (ZnO) nanoparticles were synthesized by thermal method using zinc sulfate (ZnSO4) as a precursor, then, stabilized on stone and was used...
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Regenerative Drug Discovery Using Ear Pinna Punch Wound Model in Mice
PublikacjaThe ear pinna is a complex tissue consisting of the dermis, cartilage, muscles, vessels, and nerves. Ear pinna healing is a model of regeneration in mammals. In some mammals, including rabbits, punch wounds in the ear pinna close spontaneously; in common-use laboratory mice, they remain for life. Agents inducing ear pinna healing are potential regenerative drugs. We tested the effects of selected bioactive agents on 2 mm ear pinna...
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Wybrane wiadomości z etnobotaniki i etnofarmacji. Karty z dziejów lecznictwa naturalnego [Selected issues from ethnobotany and ethno-pharmacy. Pages from the history of natural medicine]
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A model of fuel combustion process in the marine reciprocating engine work space taking into account load and wear of crankshaft-piston assembly and the theory of semi-Markov processes
PublikacjaThe ar ticle analyses the operation of reciprocal internal combu stion engines, with mar ine engines u sed a s an example. The analysis takes into account types of energy conversion in the work spaces (cylinders) of these engines, loads of their crankshaft-piston assemblies, and types of fuel combustion which can take place in these spaces during engine operation. It is highlighted that the analysed time-dependent loads of marine...
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Stone cutting industry waste-supported zinc oxide nanostructures for ultrasonic assisted decomposition of an anti-inflammatory non-steroidal pharmaceutical compound
PublikacjaPowdered stone waste (PSW) obtained from a stone cutting industrial unit was applied as support for the immobilization of nano-sized ZnO to be utilized as an effective catalyst for the catalytic conversion of acetaminophen (ACE) under ultrasonication. The incorporation of ZnO nanostructures into PSW structure enhanced the specific surface area and pore volume of the as-prepared nanocompound. The change in the value of zero point...
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Novel anticancer strategy aimed at targeting shelterin complexes by the induction of structural changes in telomeric DNA: hitting two birds with one stone.
PublikacjaThe ends of chromosomes in mammals are composed of telomeric DNA containing TTAGGG repeats, which bind specific proteins called shelterins. This telomeric DNA together with shelterins form a cap that protects the ends of chromosomes from being recognized as sites of DNA damage and from chromosomal fusions. Many very successful antitumor drugs used in the treatment of cancer patients bind to DNA, some of them with a prominent sequence...
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POSSIBILITY OF ASSESSMENT OF OPERATION OF SLIDING BEARINGS IN PISTON-CRANK MECHANISMS OF DIESEL ENGINES WITH REGARD TO LOAD AND TIME OF CORRECT WORK OF THE BEARINGS BY APPLYING ACOUSTIC EMISSION AS A DIAGNOSTIC SIGNAL
PublikacjaAbstract: The paper presents a possibility of determining (assessing) operation of sliding bearings with multilayer bushings in crank-piston mechanisms of diesel engines. Properties of load and wear, particularly fatigue and abrasive, are characterized in general. Acoustic emission as a diagnostic signal was proved to be useful for detection of the wear of sliding and barrier layers. Results of measurements of acoustic emission...
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Effect of Chitosan Deacetylation on Its Affinity to Type III Collagen: A Molecular Dynamics Study
PublikacjaThe ability to form strong intermolecular interactions by linear glucosamine polysaccharides with collagen is strictly related to their nonlinear dynamic behavior and hence bio-lubricating features. Type III collagen plays a crucial role in tissue regeneration, and its presence in the articular cartilage affects its bio-technical features. In this study, the molecular dynamics methodology was applied to evaluate the effect of...
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IDENTIFICATION OF DAMAGES OF TRIBOLOGICAL ASSOCIATIONS IN CRANKSHAFT AND PISTON SYSTEMS OF TWO-STROKE INTERNAL COMBUSTION ENGINES USED AS MAIN PROPULSION IN SEA-GOING VESSELS AND PROPOSAL OF PROBABILISTIC DESCRIPTION OF LOADS AS CAUSES OF THESE DAMAGES
PublikacjaThe article discusses damages of essential tribological associations in crankshaft and piston systems of large power two-stroke engines used as main engines, which take place during transport tasks performed by those ships. Difficulties are named which make preventing those damages impossible, despite the fact that the technical state of engines of this type is identified with the aid of complex diagnostic systems making use of...
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“Piglia il bastone e battila molto bene… allora battila, non con animo irato, ma per zelo e carità dell’anima sua.” La violenza domestica secondo alcune testimonianze medievali
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Speed, alcohol and safety belts as important factors influencing the number voivodship = Prędkość, alkohol i pasy bezpieczeństwa jako istotne czynniki wpływające na liczbę ofiar śmiertelnych wypadków drogowych na obszarze województw
PublikacjaNiniejszy referat prezentuje wyniki wstępne szerszego programu prac badawczych dotyczących bezpieczeństwa ruchu drogowego na obszarach województw.
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Interactions of fish gelatin and chitosan in uncrosslinked and crosslinked with EDC films: FT-IR study
PublikacjaFilms based on fish gelatin, chitosan and blend of fish gelatin and chitosan before and after cross-linking with EDC have been characterized by FT-IR spectroscopy. The FT-IR spectrum of fish gelatin film showed the characteristic amide I, amide II and amide III bands, and the FT-IR spectrum of chitosan film confirmed that the polymer was only a partially deacetylated product, and included CH3-C=O and NH2 groups, the latter both...
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Chitin and derivative chitosan-based structures — Preparation strategies aided by deep eutectic solvents: A review
PublikacjaThe high molecular weight of chitin, as a biopolymer, challenges its extraction due to its insolubility in the solvents. Also, chitosan, as the N-deacetylated form of chitin, can be employed as a primary material for different industries. The low mechanical stability and poor plasticity of chitosan films, as a result of incompatible interaction between chitosan and the used solvent, have limited its industrialization. Deep eutectic...
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The International Mercury Cartel, 1928–1954: Controlling Global Supply
PublikacjaThis article describes the features of the international mercury marketduringthe firsthalfofthetwentiethcentury.Itanalyzes the various market agreements made, their effectiveness, and their consequences. The period studied is little understood, although it was one in which mercury production greatly increased. It was also one that saw persistent efforts at market manipulation, owing to a series of agreements between Spanish and...
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Metylotransferazy ssaków – inhibitory i aktywatory
PublikacjaWśród metylotransferaz ssaków możemy wyróżnić metylotransferazy histonowe oraz metylotransferazy DNA. Metylacja DNA w obrębie wysp CpG oraz metylacja histonów wpływają na poziom ekspresji genów w komórkach ssaczych. Dodatkowo dzięki metylacji zapewniana jest stabilność i integralność genomu ludzkiego. Metylotransferazy DNA, będące głównym tematem tego artykułu, są często przedmiotem badań, gdyż nieprawidłowa metylacja DNA jest...
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Better understanding EMI generation of power converters
PublikacjaPrzedstawiono metodę przewidywania poziomu zaburzeń w układzie podwyższającym napięcie w oparciu o metodę filtracji Wienera. Pozwoliło to na określenie odpowiedzi impulsowej pomiędzy przyczyną zaburzenia (zmianą napięcia na elementach półprzewdonikowych) a zaburzeniem. Metodę zwerifikowano przy użyciu danych z symulacji oraz pomiarów w rzeczywistym obiekcie
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Transcriptional activity of epigenetic remodeling genes declines in keratinocytes after in vitro expansion
PublikacjaPURPOSE: In vitro expansion is an invaluable method to obtain keratinocytes in amounts necessary for effective transplantation therapies. In vitro cell culturing provokes questions concerning potential epigenetic alterations occurring in expanded cells in the context of usefulness for transplantation and safety. The purpose of this study was to investigate as to whether keratinocyte expansion is associated with changes in the activity...
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Analysis of start energy of Stirling engine type alpha
PublikacjaThe Stirling engine type alpha is composed of two cylinders (expansion space E and compression space C), regenerator that forms the space between the cylinders and the buffer space (under the pistons). Before the start-up and as a result of long-term operation, the average pressure in the working space (above the pistons) and in the buffer space is the same. However, in the initial phase of operation, the average pressure in the...
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Spillover Effect Occurrence in Tricity
PublikacjaThe key topic of this paper is a spillover effect from multinational companies to the local business environment in Tricity. The purpose of the research is to examine whether spillover effect is present in Tricity, to what extent, and, more importantly, what should be the reaction of the local authorities to the results. Based on qualitative interview-based research conducted with the multinational corporations’ employees, spillover...
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How to enhance perception of reassembled but incomplete works of ancient art? Eye-tracking study of virtual anastylosis.
Publikacjan 1964 the Venice Charter described anastylosis as the only acceptable method of reassembly of architectural remains. Although the scientific community has agreed with the Charter’s decision, many questions pertaining to the technical and aesthetic aspects of anastylosis remain unanswered. Virtual anastylosis seems one of the most promising digital solutions to finding at least some answers, as it permits testing various solutions...
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Valuation of architectural heritage by multicultural student groups
PublikacjaIn this article, the author addresses the education of architecture students in the field of architectural history and the determination of the value of architectural objects. Important changes at present are underway concerning this. Both the role of architectural history in architectural education and content in architectural history curricula is changing. The need for re-evaluation...
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Meeting Modernisms in Gdynia
PublikacjaThe paper focused on the architectural heritage of the city of Gdynia, in Poland, built in 1920s and 1930s. The city was established (founded) on the seaside of the Baltic Sea as the only port of Poland – a country that regained independence after Versailles Treaty. The history of the city, built from scratch is outstanding in Europe. Modernist architecture of the city is represented by buildings built for different purposes: housing,...
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Land of New Towns
PublikacjaReflexions on new towns throught the history.
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Analysis of Transparent Concrete as an Innovative Material Used in Civil Engineering
PublikacjaSince the dawn of history concrete has been, right behind stone and brick, one of the oldest building materials. The ancient Romans took advantage of its opportunities. They constructed amazing architectural objects, which survived centuries as whole buildings or parts of them. Concrete is so ubiquitous, that when we are walking in a newer districts of cities we are virtually surrounded by concrete from everywhere. Sometimes...
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La sfida di "Re Cotone". Una nuova storia del capitalismo attraverso la storia delle commodities?
PublikacjaThe article is divided into two parts. In the first one, it highlights the role of commodities in real economy and it observes the coincidence of their price increase after 2003 and their importance as a research topic particularly in the framework of global history. In the second one, it propose a comparative analysis of two recent books on cotton, considering similarities and differences of their approaches, and the difficult...
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The Lost Kinetic Architecture and How to Reintroduce it in the Landscape – The Case Study of the Drainage Windmills in the Vistula Delta
PublikacjaRecreating the lost kinetic landscape of the Vistula Delta is a considerable challenge. The study aims to propose a method for reproducing windmills and their effect on the landscape. The paper suggests a method based on the transposition of the forms of movement from windmills historically present in the region to modern forms. The method is based on a series of analyses starting with the study of the region and its history followed...
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Structural analysis as a supporting method for the research of the medieval brick architecture
PublikacjaChronology of brick historical buildings might be established much more precisely than the chronology of stone ones due to the architectural and metrical analysis of bricks, mortars and brickworks. Comparison of historical sources allows to reconstruct the previous stages of constructing monuments. Causations between transformations and developments of monuments are usually interpreted as the results of artistic or ideological...
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Aspekty formalno-prawne współczesnej gospodarki energetycznej
PublikacjaPrzedstawiono najbardziej istotne akty prawne , dyrektywy,zarządzenia rozporządzenia regulujące procesy gospodarowania energią
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Contribution to the capacity analysis of the classic composite girder of Möller
PublikacjaThe analysis (brief history, experiments, numerical method) of the classic composite girder of Moller has been presented.
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Shaping the new face of the Imperial Shipyard in Gdańsk
PublikacjaThe main purpose of the article is to present the transformation process of the urban complex known as the Imperial Shipyard in Gdańsk. Its rich history and interesting location on the waterfront of the city as well as its proximity to the very centre makes this area a much sought-after location for the new urban development project, which is part of the wider new district in the city centre of Gdańsk – the Young City. The article...
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Prezentacje multimedialne z wykorzystaniem środowiska Flash
PublikacjaW referacie przedstawiono istotne cechy środowiska programowego pakietu Macromedia-Flash umożliwiającego tworzenie multimedialnych aplikacji edukacyjnych.
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Czysta woda. Ochrona pośrednia ujęcia wody podziemnej
PublikacjaProblemy ochrony sanitarnej podziemnych ujęć wody. Nieżyciowe przepisy. Zagrożenia. Propozycja zmian, szczególnie istotne w mniejszych obiektach
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Operational problems of large power diesel engines combusting biofuels, considered togetherwith assessment of their operation
PublikacjaWithin this article the issue of large power self ignition engines fed with biofuels has been undertaken. The analysis focused mainly on operation problems. There has been noticed some advantages and difficulties associated with the biofuel application to self ignition engines. The research problem has been characterised and the research purposes have been proposed enabling the most profitable formation of energetic features of...
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Metody i oceny efektywności inwestowania.
PublikacjaPrzedstawiono syntezę zagadnienia oceny efektywności, która stanowi istotne uzupełnienie dotychczasowego przeglądu metod w zakresie inwestowania w energetyce.
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Rozwój inicjatyw klastrowych na Dolnym Śląsku
PublikacjaCelem niniejszej publikacji jest analiza uwarunkowań rozwoju klastrów w województwie dolnośląskim. Autorka analizuje region Dolnego Śląska, wskazując sektory przemysłu i usług, stanowiące istotne koncentracje branżowe o największym potencjale "gronotwórczym" oraz identyfikuje powstałe w regionie inicjatywy klastrowe. Ponadto autorka przedstawia strategiczne programy realizowane na Dolnym Śląsku, istotne z punktu widzenia rozwoju...
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Chapter 7: Engineering Thermodynamics and the Carnot Cycle
PublikacjaThe chapter presents information about thermodynamics and thermodynamic cycles, especially the history and meaning of Carnot Cycle as well as P-v and T-s Diagrams