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Tytuł:
Bez Ludwika i panny służącej. Projekty nowoczesnych kuchni jako zwierciadło przemian roli kobiet w poodwilżowej Polsce
SOCIAL REALISM FROM THE INSIDE. DESIGN, THE ART OF THE INTERIOR AND MODERNIZATION
Autorzy:
Szydłowska, Agata
Powiązania:
https://bibliotekanauki.pl/articles/2135559.pdf
Data publikacji:
2021-12-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
kitchen
design
Thaw
modernism
home engineering
Opis:
The development of a post-Stalinist modern kitchen in Poland was informed by the activities of different individual and institutional actors: experts in ‘professional’ home engineering, architects and designers and modernist taste-makers. The image of the model kitchen is surprisingly coherent: a rational laboratory kitchen, where the housewife’s work is orchestrated according to Taylorism-inspired rules that aim at reducing the burden of domestic chores and introducing modern and hygienic equipmentand attitudes. The discourse, inspired by similar discussions in Europe and United States, mainly by the works of Swedish Research Institute, reflects the prewar ideas of kitchen-laboratories and ‘home engineering’. What’s new and different is the temporal (limited to a short post-Thaw period) enthusiasm for open-plan kitchens presented as spaces where a housewife can seamlessly perform two duties at the same time: housework and care work. This phenomenon mirrors changing attitudes towards women’s roles in society which, in the post-Stalinist period, were marked by ongoing conservatism. Drawing on the concept of a ‘mediation junction’ and the historical production-consumption-mediation paradigm in design, the article traces changing attitudes towards women’s roles in society, reflected both in popular and professional discourses on kitchen design.
Źródło:
Artium Quaestiones; 2021, 32; 161-185
0239-202X
Pojawia się w:
Artium Quaestiones
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancement the conditioning of waste activated sludge through a sequence of freeze/thaw-electro-Fenton process
Autorzy:
Shahheidar, N.
Jorfi, S.
Takdastan, A.
Jaafarzadeh, N.
Ahmadi, M.
Powiązania:
https://bibliotekanauki.pl/articles/779096.pdf
Data publikacji:
2018
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Sludge conditioning
freeze
thaw
electro-Fenton
Opis:
Sludge conditioning is an important stage in sludge management. In the present study, a sequence of freeze/thaw-electro-Fenton process was designed and specific resistance filtration (SRF) was monitored during sludge conditioning as an important factor in sludge dewaterability. Furthermore, protein and polysaccharide concentrations were measured during the experiments. Results showed that the lowest SRF value contributed to −10°C in freezing process which showed a reducing trend by decreasing solution pH. In addition, results revealed that solution pH less than 3 caused a significant improvement in sludge dewatering; so the lowest SRF has been registered at pH = 2. By increasing current intensity from 0.5 to 1A, SRF values were reduced and then followed by an enhancement with increasing current intensity to 3.2 A. The lowest SRF value (6.1 × 104 m/kg) was obtained at H2O2 = 30 mg/L which was the best conditions for sludge dewatering.
Źródło:
Polish Journal of Chemical Technology; 2018, 20, 1; 47-53
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Cyclic Freezing and Thawing on the Hydraulic Conductivity of Selected Aggregates Used in the Construction of Green Roofs
Autorzy:
Gwóżdź, K.
Hewełke, E. A.
Sas, W.
Żakowicz, S.
Baryła, A.
Powiązania:
https://bibliotekanauki.pl/articles/124495.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
aggregates
freeze-thaw durability
hydraulic conductivity
green roofs
Opis:
The construction of a green roof requires drainage which ought to be characterized by adequate hydraulic conductivity and be resistant to changing meteorological conditions during the winter period. A properly functioning drainage system guarantees the reliability of the entire green roof system. The article presents studies on the freeze-thaw durability and hydraulic conductivity of selected aggregates applied for constructing green roof drainage systems. The aggregates were subjected to a cyclic freezing and thawing process in 30 and 70 cycles. The obtained results indicate that the conductivity of aggregates studied using the constant head method decreases along with an increase in the number of freeze-thaw cycles they were subjected to. This means that the indicator of freeze-thaw durability can have an indicative nature in the assessment of the usefulness of selected aggregates for constructing drainage layers. The conducted studies indicate that the deciding parameter when selecting an aggregate ought to be its hydraulic conductivity, determined accounting for the changes taking place in the freeze-thaw cycles. The equations of changes in the conductivity of aggregates indicated by the authors make it possible to assess them for practical purposes.
Źródło:
Journal of Ecological Engineering; 2016, 17, 4; 50-56
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the pre-wetting of expanded clay aggregate on the freeze-thaw resistance of the expanded clay aggregate concrete
Autorzy:
Musiał, Michał Piotr
Grzymski, Filip
Trapko, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1845171.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
lightweight concrete
freeze-thaw resistance
aggregate pre-wetting
Opis:
This paper presents experimental research on expanded clay aggregate concrete. The aim of the investigations was to determine if the pre-wetting of expanded clay aggregate has an effect on the freeze-thaw durability of the expanded clay aggregate concrete. Five concrete series based on the same concrete mix design were made and tested. The degree of pre-wetting of the aggregate was varied: dry aggregate was used in the first series, aggregate with a moisture content of 10% was used in series IA and IB and aggregate with a moisture content of 25% was used in series IIA and IIB. Also the approach to the production process was varied: in series A the water contained in the aggregate was taken into account in the global water-cement ratio (consequently a reduced amount of water was added to the mix), whereas in series B the nominal amount of water was added to the mix (as in the case of dry aggregate). The freeze-thaw resistance criterion was based on the assessment of the decrease of compressive strength and increase in weight loss after exposure to freeze-thaw cycles. The expanded clay aggregate concrete’s strength and mass decrements caused by freeze-thaw cycling were used as the measure of its freeze-thaw resistance. The investigations have shown that the pre-wetting of expanded clay aggregate has an effect on the freeze-thaw durability of the expanded clay aggregate concrete. The differences of concrete compressive strength decrease related to freezethaw durability may be 2 to 5 times greater when inadequate method of calculating mixing water for concrete is used.
Źródło:
Studia Geotechnica et Mechanica; 2021, 43, 2; 65-73
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ego-дискурс українського шістдесятництва як зріз епохи вивільненої свободи
Ego-discourse of the Ukrainian sixtiers as an image on the epoch of liberated freedom
Autorzy:
Tarnshynska, Liudmyla
Powiązania:
https://bibliotekanauki.pl/articles/2157688.pdf
Data publikacji:
2022-07-28
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Ukrainian sixties
freedom
ego-discourse
egodocuments
dialogue
Khrushchev's Thaw
Opis:
The article highlights a set of problems of ego-documents (diaries, epistolary, etc. of Ivan Dziuba, Les’ Tanyuk, Ivan Svitlychny, Iryna Zhylenko, Valery Shevchuk, Mykhailyna Kotsyubynska, Svitlana Kyrychenko, etc.) in the discourse of the Ukrainian sixtiers. It is emphasized that these documentary testimonies with a powerful factor of subjective “I” reflect a slice of the era of “liberated freedom”, when the debunking of Stalin’s cult of personality and Khrushchev Thaw led to a new generation of Ukrainian intellectuals, more broadly – of the Ukrainian sixtiers. This was a new stage in the social and socio-cultural transformation of Ukrainian society in the conditions of sub-imperial Ukraine and the attempts of dissidents to free themselves from this enslavement. The open dialogue with a specific addressee or appeals to the addressee of imaginary ego-discourse, the “spiritual situation of the day” is presented because of confession. The period was the middle or second half of the 20th century. The research focus is on the unconquered human self in complex transformational, often borderline (further harassment, arrests, exile) conditions.
Źródło:
Studia Polsko-Ukraińskie; 2022, 9; 187-202
2353-5644
2451-2958
Pojawia się w:
Studia Polsko-Ukraińskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A ‘Great Change’, or, the Poles’ Unfulfilled Daydream about Having a Car (1956–7)
Autorzy:
Kochanowski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/601597.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Historii im. Tadeusza Manteuffla PAN w Warszawie
Tematy:
Polska
socialist countries
Thaw of 1956
motorisation
automobile
consumption
Opis:
The political ‘Thaw’ of 1956–7 was in Poland a period of thorough political as well as cultural and social change. While the political liberalisation came to an end rather soon, the team of Władysław Gomułka, the newly-appointed First Secretary of the Central Committee of the Polish United Workers’ Party [PZPR], in power since October 1956, cared much for maintaining and reinforcing their pro-social and reformatory image. The leadership team’s assent for a more sophisticated consumption, part of which was owning a car, helped alleviate social tensions. The models were drawn from the West of Europe and from the United States, which for the Polish society were the major points of reference, as well as from the other socialist countries – particularly, East Germany (the GDR) and Czechoslovakia, where the political and societal significance of motorisation had already been appreciated. On the other hand, offering private individuals an opportunity to purchase a car was meant to be a remarkable tool used to draw the ‘hot money’ down from the market, thus preventing inflation. Cars, imported or Polish-made, began being (relatively) freely traded, at very high prices. This did not limit the demand, as acquiescence for private business operations contributed to the growing of the group of affluent people. While this incited the citizens to develop their own strategies of acquiring cars – not infrequently colliding with the law; the authorities began gradually reinstating the rationing. All the same, the number of private cars quickly increased, to 58,600 as of 1958, up from some 24,750 in 1956. Public discussion started around popular low-capacity (small-engine) cars – whether licensed (Renault, Simca, Fiat) or (to be) made in Poland. However, in spite of the raised expectations the authorities decided that it was still too early for a mass motorisation: this was made possible only in the early 1970s.
Źródło:
Acta Poloniae Historica; 2017, 115
0001-6829
Pojawia się w:
Acta Poloniae Historica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tradycja modernizmu i awangardy w ukraińskim malarstwie II połowy XX wieku
Autorzy:
Zambrzycka, Marta
Powiązania:
https://bibliotekanauki.pl/articles/1789922.pdf
Data publikacji:
2018-04-20
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Ukrainian modernism
avan-garde
painting
tradition
nonconformism
Khrushchev Thaw
Opis:
The subject of the article is the infl uence of the Ukrainian modernism tradition and avant-garde on painting evolving in the second half of the 20th century in the Ukrainian Soviet Socialist Republic. The author of this article focuses on trends that do not correspond with the aesthetics of socialist realism being developed in opposition to it. The subject of the analysis is the generation work that debuted during the “Khrushchev Thaw” (1956–1964), called the generation of the sixties or nonconformists. The fi rst term includes painters, writers, poets, cinema and theater makers, as well as social activists. The second term both narrows the fi eld of interest to visual arts and extends the timespan from the Khrushchev Thaw to Perestroika.
Źródło:
Studia Ucrainica Varsoviensia; 2018, 6; 397-416
2299-7237
Pojawia się w:
Studia Ucrainica Varsoviensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ cyklicznego zamrażania na parametry mikrostruktury monojonowych bentonitów
Effect of cyclic freezing on microstrukture parameters of monoionic bentonites
Autorzy:
Kozłowski, T.
Grobelska, E.
Walaszczyk, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/372108.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
bentonit
cykliczne zamrażanie i rozmrażanie
mikrostruktura
bentonite
freeze-thaw
microstructure
Opis:
W referacie przedstawiono analizę zmian mikrostruktury monomineralnych form bentonitu poddanych cyklicznemu zamrażaniu. Badania wykonano przy użyciu elektronowej mikroskopii skaningowej SEM oraz metody numerycznej analizy obrazu NIA. Wstępne wyniki badań dowiodły, że mikrostruktury gruntów spoistych uległy modyfikacji na skutek zamrażania. Stwierdzono wzrost całkowitej powierzchni porów. Wyniki przeprowadzonej analizy statystycznej sugerują, że powierzchnia właściwa bentonitu jest zależna od rodzaju głównego kationu wymiennego (Ca2+, Mg2+, K+, Na+).
In this study the effects of cyclic freezing on microstructure of monomineral forms of bentonite were investigated. Samples of the non-frozen soil and the soil frozen were tested using scanning electron microscope SEM. The analysis of the photographs was conducted using Photo Shop CS4 software. Results obtained show that the microstructure of the frozen soil undergoes significant modifications. The analysis revealed increase in total area of pores. On the basis of statistical analysis it can be assumed that the specific surface area of bentonite depended on the type of exchangeable cation (Ca2+, Mg2+, K+, Na+ ).
Źródło:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski; 2010, 139 (19); 15-32
1895-7323
Pojawia się w:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problem suwerenności Polski w okresie przemian Polskiego Października i kampanii przed wyborami do Sejmu PRL w 1957 roku
The problem of Polish sovereignty in the period of changes of the Polish October campaign before the elections to the Parliament of Polish People’s Republic in 1957
Autorzy:
Skobelski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/546727.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
niezależność
odwilż polityczna
kampania wyborcza
independence
political thaw
election campaign
Opis:
Celem artykułu jest wskazanie wpływu przemian polskiego października na dyskusje i spory wokół suwerenności PRL. Wyniesiona do władzy na fali politycznej odwilży ekipa na czele z Władysławem Gomułką zdawała sobie sprawę z konsekwencji przynależności Polski do radzieckiego imperium. Dla nowego przywódcy PRL zwiększenie suwerenności kraju było tożsame z poszerzeniem autonomii polskich komunistów w ramach tzw. wspólnoty socjalistycznej, zgodnie z jej uwarunkowaniami ideologicznymi, a także bez szkody dla dominującej pozycji Kremla. W takim duchu należało rozumieć polityczne posunięcia Gomułki dotyczące sprawy Węgier oraz negocjacje, jakie strona polska prowadziła ze Związkiem Radzieckim na temat problemów gospodarczych, kwestii stacjonowania wojsk radzieckich w Polsce oraz repatriacji Polaków z ZSRR. W wyniku tych rozmów uregulowano na bardziej sformalizowanych i prawnych zasadach stosunki ze wschodnim sąsiadem, co w oczach znacznej części społeczeństwa stanowiło zwiększenie marginesu niezależności PRL od Kremla. Zdawano sobie powszechnie sprawę, że w ówczesnych warunkach nie można było uzyskać więcej. Mimo to kwestia suwerenności PRL była obecna podczas kampanii przed wyborami do Sejmu w styczniu 1957 r. Wielu kandydatów na posłów, w tym członków partii, podnosiło podczas spotkań z wyborcami problem uzależnienia Polski od wschodniego sąsiada, a także poruszało temat rewizji granic wschodnich oraz niekorzystnej dla PRL wymiany handlowej z ZSRR. Nastroje antyradzieckie, co szczególnie niepokoiło władze, dawały o sobie znać również w wojsku.
The aim of the article is to indicate the impact of the political thaw in the Polish October on discussions and dispute over the sovereignty of the PRL. Raised to power on a wave of political thaw, the team headed by Władysław Gomułka was aware of the consequences of Poland’s belonging to the Soviet empire. For the new leader of the PRL, increasing the sovereignty of the country was the same as the autonomy of Polish communists within the so-called socialist community, in accordance with its ideological conditions, as well as without undermining the Kremlin’s dominant position. It was in such a spirit that one should understand Gomułka’s political actions regarding the Hungarian issue and the negotiations that the Polish side had with the Soviet Union on economic problems, the issue of stationing Soviet troops in Poland, and the repatriation of Poles from the USSR. As a result of these talks, relations with the eastern neighbor were regulated in more formalized and legal terms, which in the eyes of a significant part of society was an increase of the independence of the PRL from the Kremlin. They were generally aware that under the current conditions, no more could have been obtained. Nevertheless, the issue of the sovereignty of the PRL was present during the campaigns before the elections to Parliament in January 1957. Many candidates for deputies, including party members, raised during the meetings with voters the issue of Poland’s dependence on the eastern neighbor, and also raised the subject of the revision of eastern borders and the trade with the USSR, at that time unfavorable for PRL. Anti- Soviet moods, which were particularly worrying for the authorities, also made themselves known in the army.
Źródło:
UR Journal of Humanities and Social Sciences; 2019, 11, 2; 126-143
2543-8379
Pojawia się w:
UR Journal of Humanities and Social Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Produkowanie estetyk, produkowanie podmiotu. Początki odwilży i wolność twórcza w sztukach wizualnych na przykładzie wystawy w Arsenale
Autorzy:
Dąbrowski, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/909478.pdf
Data publikacji:
2019-05-07
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
freedom of art in communist Poland
censorship
“thaw”
“Arsenał” exhibition
Opis:
In Polish art history, there are two approaches to the “Arsenał” exhibition of August 1955. One, rooted in the debates around it, presents the “Arsenał” as the beginning of a political “thaw” – an act of emancipation, a demonstration of young artists who rebelled against the socialist realism. The other approach to the show or, rather, to the “thaw” as a whole, rejects an interpretation of artistic processes and choices as autonomous activities. Instead, with reference to the theory of Michel Foucault, the “Arsenał” is considered as a result of a reconfiguration of scattered power relations, stimulated by the changing strategies of the institutional power system. The present paper follows the latter approach. Foucault claims that power relations are combined with three interconnected types of human relations: defining the hierarchy of tasks and division of labor, compelling obedience, and performing “communicative binding,” i.e. purposeful action that affects the actors’ knowledge of the world and of themselves. After 1954, power relations in Poland were strategically changing: the system of labor division and the distribution of art, including all the related benefits, was still centralized, but the ineffective administrative control relaxed, while the production of meaning changed as well – the communist party modified its rhetoric referring to art and the range of artistic choice grew together with the options of communication. Still, the liberalization of the system and abandoning the Moscow version of the socialist realism in cultural policy did not mean any real increase of the freedom of choice. Using state exhibition institutions and the press, which was the main channel of communication between the authorities and the masses, the communist regime continued to control the aesthetic consciousness of the artists. An analysis of both printed and visual messages found in the press of the period, specialist periodicals and daily newspapers alike, has revealed a surprising similarity of the official discourse and the aesthetic choices made by the participants of the “Arsenał” – in particular those choices which were later interpreted as attempts to reject the socialist realism and launch a new beginning. It seems that the young artists were “positively censored,” i.e. the regime succeeded in creating an aesthetic reality which they accepted. What is more, they considered it subversive as an emanation of liberty. The selection of the aesthetic modes favored by the authorities took place in an unconscious way already at the stage of creation, before particular works of art were accepted by the ”Arsenał” jury and before they were actually controlled by the institutions of censorship.
Źródło:
Artium Quaestiones; 2018, 29; 381-408
0239-202X
Pojawia się w:
Artium Quaestiones
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Od rewizji do apostazji i między publicystycznością a literackością. O wierszach polskiej „odwilży”
From revision to apostasy, and between public discourse and literary discourse. On the poems of the Polish thaw
Autorzy:
Stankowska, Agata
Powiązania:
https://bibliotekanauki.pl/articles/1041914.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Polish poetry in the 20th century
thaw
October watershed
censorship
Opis:
The text is a book review of an Wiersze polskiej „odwilży” (1953-1957)  (Kielce 2010). This is the first monograph of this subject, and it has a great documentary value. The author based his well-researched study on detailed archival queries in contemporary press, magazines, and leaflets. The author compared the found texts with their authors’ published poetry books, traced the relations between content, censorship interventions in reprints, and subsequent authorial modifications, which were often aimed at universalization of a poem initially written as an urgent public statement. The author meticulously reconstructed the communicational problems of thaw poems and collections.
Źródło:
Poznańskie Studia Polonistyczne. Seria Literacka; 2016, 29; 247-259
1233-8680
2450-4947
Pojawia się w:
Poznańskie Studia Polonistyczne. Seria Literacka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pojęcie wolności w optyce dychotomii swoi–obcy w tekstach sowieckiego ideologicznego subdyskursu o kulturze lat 1953–1957
The term of freedom as perceived in the us-them dichotomy in texts of the soviet ideological subdiscourse about culture in 1953–1957
Autorzy:
Zemszał, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/475654.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Języka Polskiego PAN
Tematy:
wolność
sowiecki dyskurs ideologiczny
odwilż
freedom
liberty
soviet ideological discourse
thaw
Opis:
Pojęcie wolności należy do kluczowych pojęć społecznych i etyczno-moralnych w rosyjskiej lingwokulturze. Jego dychotomiczna struktura przejawia się w dwóch podstawowych realizacjach: воля i свобода. Zasadniczą kwestią dla zrozumienia jego funkcjonowania w warunkach totalitarnych jest uwzględnienie realnego stosunku nadawców do kwestii wolności oraz analiza retorycznego wykorzystania tego konceptu w tekstach propagandowych i dokumentalnych. Przeanalizowany materiał pozwala stwierdzić, że tradycyjna dla rosyjskiej lingwokultury dychotomia свобода – воля uległa w ramach badanego dyskursu znaczącej reinterpretacji, która polegała w pierwszej kolejności na wyeliminowaniu drugiego z jej elementów jako konotującego brak ograniczeń i jednocześnie nacechowanego pozytywnie, a zatem, z punktu widzenia propagandy systemu, potencjalnie szkodliwego oraz aktualizacji trzech kategorii odpowiadających trzem zasadniczym zbiorowościom, o których mowa w dyskursie. Pierwszą z nich jest kategoria MY (SWOI), której odpowiada настоящая свобода, drugą – kategoria ONI (OBCY, wróg zewnętrzny, мнимая свобода), trzecią – ONI (OBCY, wróg wewnętrzny, произвол).
The term of freedom belongs to crucial social, ethical and moral issues in the Russian languaculture. Its dichotomous structure is reflected in two basic embodiments: воля and свобода. An issue crucial for understanding its functioning in conditions of totalitarianism is taking into account the actual perception of freedom by senders, and an analysis of the rhetorical use of this concept in propaganda and documentary texts. On a basis of the analysed material it can be said that the dichotomy of свобода — воля, traditional for the Russian languaculture, underwent significant reinterpretation under the analysed discourse, first by elimination of its second components as implying a lack of restrictions, while having a positive meaning, and thus being potentially harmful from the system propaganda point of view, and then by updating the three categories corresponding to three basic groups mentioned in the discourse. US (FRIENDS ) is the first of these categories, to which настоящая свобода corresponds, THEM (STRANGERS , an external enemy мнимая свобода) form the second of these categories, while the third one describes THEM (STRANGERS ,an internal enemy, произвол).
Źródło:
Socjolingwistyka; 2019, 33; 113-125
0208-6808
Pojawia się w:
Socjolingwistyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of pozzolans addition on cement mortars
Autorzy:
Konca, P.
Powiązania:
https://bibliotekanauki.pl/articles/104197.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
cement mortars
microsilica
zeolite
physical properties
freeze-thaw resistance
capillary suction
Opis:
The addition of microsilica was widely used in concretes and mortars since the second half of the 20th century (in high and very high strength concretes). Silica fume consists of very fine spherical particles. This additive, thanks to its properties, fills the space between cement particles and aggregates which affects: porosity, watertightness, shrinkage reduction and increased strength. The microsilica has pozzolanic properties and reacts with calcium hydroxide and gradually forms a uniform and continuous contact phase C-S-H (calcium-silicat hydrate). The interfacial zone between cement paste and aggregate has been considered as a zone of weakness. Zeolite is a material lesser known in civil engineering which can be used as an alternative to microsilica. The article presents the investigation of the physical properties of mortars containing these two types of pozzolan. In mixes pozzolan additives at 0 to 20 percent by mass of portland cement are used. Testing of such properties of fresh mortar as workability and air content was carried out. The properties of hardened mortar such as strength, water absorption, frost resistance and capillary suction were also determined.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 109-116
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved transformation of Agrobacterium assisted by silver nanoparticle
Autorzy:
Benny, Amala
Alex, Swapny
Soni, K.B.
Anith, K.N.
Kiran, A.G.
Viji, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/16648111.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
silver nanoparticles
Agrobacterium transformation
calcium chloride
competent cells
freeze thaw
transformation efficiency
Opis:
In transgenic plant development, the low transformation efficiency of Agrobacterium with exogenous DNA is the major constraint, and hence, methods to improve its transformation efficiency are needed. Recently, nanoparticlemediated gene transfer has evolved as a key transformational tool in genetic transformation. Since silver nanoparticles (AgNPs) can induce pores on the cell membrane, their efficacy in the improvement of conventional calcium chloride freeze-thaw technique of transformation of Agrobacterium was explored in this study. Agrobacterium cells in the exponential growth phase were exposed to different concentrations of AgNPs (0.01, 1, 5, 10, and 20 mg/l), and the half-maximal effective concentration (EC50) was determined via Probit analysis using the SPSS software. Transformation efficiency of AgNPs alone and in combination with calcium chloride was compared with that of the conventional calcium chloride freeze-thaw technique. AgNPs at a concentration of 0.01 mg/l in combination with calcium chloride (20 mM) showed a ten fold increase in the transformation efficiency (3.33 log CFU (colony-forming unit/microgram of DNA) of Agrobacterium tumefaciens strain EHA 105 with plasmid vector pART27 compared with the conventional technique (2.31 log CFU/μg of DNA). This study indicates that AgNPs of size 100 nm can eliminate the freeze-thaw stage in the conventional Agrobacterium transformation technique, with a 44% improvement in efficiency. The use of AgNPs (0.01 mg/l) along with 20 mM calcium chloride was found to be an economically viable method to improve the transformation of Agrobacterium with exogenous plasmid DNA.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 3; 311-317
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka odwilży w Hornsundzie (Spitsbergen)
Characteristics of thaws at Hornsund (SW Spitsbergen)
Autorzy:
Matuszko, D.
Soroka, J.
Powiązania:
https://bibliotekanauki.pl/articles/260878.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
odwilże
dni odwilżowe
sezon zimowy
Spitsbergen
Hornsund
thaws
thaw days
winter season
Opis:
Celem opracowania jest charakterystyka odwilży i dni odwilżowych w Hornsundzie. Odwilże rozpatrywano podczas 34 sezonów zimowych od 1 grudnia 1982 roku do 30 kwietnia 2016 roku. Pod pojęciem odwilży rozumiano okres co najmniej jednodniowy z temperaturą dobową maksymalną ≥ 0°C, który następuje bezpośrednio po co najmniej dwudniowym okresie mroźnym, czyli z temperaturą dobową maksymalną < 0°C. Dni odwilżowe definiowano jako wszystkie dni z dodatnią temperaturą maksymalną ≥ 0°C w sezonie zimowym, po co najmniej dwóch pierwszych dniach mroźnych po rozpoczęciu tego sezonu. Dokonano oceny zmienności wieloletniej występowania odwilży i dni odwilżowych, określono ich częstość w sezonie zimowym, daty początku, długość ciągów dni, uwarunkowań cyrkulacyjnych ich występowania i warunków meteorologicznych im towarzyszących. Stwierdzono wzrost częstości i długości trwania odwilży oraz przesunięcie zwartego okresu mroźnego z grudnia i stycznia na luty i marzec. Tendencje te są szczególnie widoczne od początku XXI wieku. Występowaniu odwilży sprzyja adwekcja ciepłego powietrza z południa.
Long-term variability in the occurrence of thaw periods can be used as an indicator of climate change in the polar zone due to the snow and ice melting processes associated with them. The study looked at the thaw period and days with thaw parameters at Hornsund and included the long-term variability, frequencies, onset timing, permanence, associated atmospheric circulation and accompanying weather conditions. The study limited itself to looking at thaw periods during the winter season defined by Marsz (2007), which runs from 1 December to 30 April. Thaw was defined as a period of at least one day with a maximum daily temperature equal or greater than zero degrees (TMAX ≥ 0°C), which followed immediately after at least two days of sub-zero temperatures (TMAX < 0°C). Days with a thaw were defined as days with an above-zero daily maximum temperature (TMAX ≥ 0°C) following after at least the first two sub-zero days of a given winter season. The study employed records of daily measurements of air temperature, depth of snow-cover, precipitation totals and wind speed and direction made at the Polish Polar Station in Hornsund during 34 winter seasons from 1 December 1982 to 30 April 2016. During that period, there were on average eight thaw periods per season. The highest number of thaws (15) was recorded in 2015/2016 and the lowest (4) in 1987/1988, 1993/1994 and 2001/2002. The timing of thaw onset varied between seasons, but was most frequent in December (27), followed by January (5) and February. Typical thaws lasted between one and three days in length, but there were many warm spells even exceeding ten days. These longest thaw periods only appeared in Hornsund in 1996, as previously they had never lasted for more than nine days. The longest such warm spell during the study period was recorded between 31 January and 18 February 2014. It was accompanied by a cyclonic situation with air advection from the south-east and south (Niedźwiedź 2016), a peak air temperature of 4.4°C, a wind speed of more than 10 m/s, and a snow cover shrinking rate of 10 cm in four days. Since the beginning of the 21st century, there has been a steady increase in the frequency of days with a winter thaw. In the 2005/2006 season there were 67 such days, while three other seasons also had more than the until-then unheard of 50 days of thaw. The least days with a thaw (6) were recorded in the 1987/1988 season which had the lowest air temperature during a thaw and the lowest number of thaw periods (4), among which there was one three-day spell in January and three isolated days in February, March and April. A total of 18 seasons during the study period, had thaw days in each month, while in the other seasons there would be unbroken monthly or longer periods with freezing temperatures, typically in March, but also in December, January, and February. Winter season weather in Hornsund is primarily determined by atmospheric circulation due to the limited or non-existent solar radiation. The most frequent are cyclonic situations with air advection from the east (Ec peaking in January), north-east (NEc peaking in December) and south-east (SEc peaking in February). April stands out with relatively frequent (more than 8%) anticyclonic situations (Ka and NEa). There are almost no incidences of anticyclonic situations with western or north-western advection (Wa, NWa – less than 1%). Thaws are most likely in the following situations: December – SWc and Sc, January – SWc, Wc and Sc, February – SWa and SWc, March – SWa, Wc ad SWc, and April – SWa, Sc and SWc. In general, the situation favouring a thaw involves air advection either from the south-west regardless of the pressure system, or from the south and west in cyclonic situations.
Źródło:
Problemy Klimatologii Polarnej; 2016, 26; 59-70
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 73

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