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Wyświetlanie 1-2 z 2
Tytuł:
Wetting properties of the sodium bis(2-ethylhexyl) sulfosuccinate (AOT) and polyoxyethylene (23) lauryl ether (Brij 35) binary mixtures in the poly(tetrafluoroethylene)-solution-air system
Autorzy:
Krawczyk, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/764089.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
surfactant
polymer
contact angle
critical surface tension of wetting
Opis:
Wettability of poly(tetrafluoroethylene) (PTFE) by aqueous solutions of binary mixtures composed of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) with polyoxyethylene (23) lauryl ether (Brij 35) was considered on the basis of the measured values of contact angle and surface tension. It was shown that the value of the critical surface tension of PTFE surface wetting at the studied system (23.5 mN/m), does not depend on the concentration and composition of the binary mixtures of studied surfactants in water, and it was higer than the surface tension of PTFE (20.2 mN/m). The best wettability of polytetrafluoroethylene (PTFE) by studied aqueous solutions of binary surfactants mixtures occurs at the mixtures concentration corresponding to the critical micelle concentration of their solutions.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2015, 70, 1
2083-358X
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czytelnictwo wśród użytkowników Facebooka
Reading among Facebook users
Autorzy:
Czerniak, Zuzanna
Witek, Joanna
Krawczyk, Anna
Boczek, Magdalena
Łaziuk, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/681007.pdf
Data publikacji:
2015-05-21
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Czytelnictwo
Facebook
Reading
Opis:
: Recent research on reading situation in Poland indicates decreasing interest in books among adults. This tendency is also supposedly followed by changes in reading models as well as different ways of reader-text interactions. Since internauts are generally believed to be a non-reading community, an online questionnaire for Facebook users was prepared, a group which is quite easy to reach, to get a better insight into the situation. The research was carried out between April 23rd and May 3rd 2011 on a group of 150 respondents. It focused on book reading and purchasing intensity, book choices, most commonly used book sources, reading traditional magazines, online magazines, e-books and using digital libraries. It was available in either Polish or English language version. A total of 138 respondents from Poland, USA, UK, Tunisia, Australia, Belgium, Canada, Finland, Germany, Mexico, South Korea and Switzerland took part, one origin unknown. Most of them (74,67%) were people between 17 and 35 years old, the eldest one being 77, the youngest 13. Out of 138 interviewees, 110 were women, over 76% lived in urban areas and declared their education level as higher (57,3%) or secondary (28,7%). The results proved surprisingly optimistic. Only 9 interviewees admitted that they had not read any books in the last 12 months, others read 0–2 or 3–5 books a month. Fantasy, suspense fiction and classical novels were the most popular among them. When asked about favourite titles, respondents listed mainly classics of world literature and popular bestsellers. Reviews as well as recommendations of family members or friends had the greatest influence on their reading choices. Almost 75% of survey participants bought books, usually once a month or once every few months, however, they preferred to borrow them from libraries or friends. Almost half of Polish respondents read e-books and online magazines, although they avoided using digital libraries. They also read traditional print magazines, especially political and social ones, women and popular science magazines. As the results show, reading still remains one of the most popular forms of spending free time for both interviewed Facebook users and other members of their communities. Books are also a popular subject of their conversations and discussions in both real and virtual space.
Źródło:
Folia Bibliologica; 2013-2014, 55-56; 171-181
2449-8246
1230-2376
Pojawia się w:
Folia Bibliologica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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