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Wyświetlanie 1-10 z 6647
Tytuł:
Fluoride and environment
Autorzy:
Moudarzi, Fasser
Sheljani, Karikhan
Powiązania:
https://bibliotekanauki.pl/articles/1153715.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Environment
Fluorine
Opis:
The presence of fluoride in exceeding limits and related problems of drinking water prevailing in many parts of India is well documented. Fluoride in drinking water is known for having both beneficial and detrimental effects on health. Many solutions to these problems were also suggested. Fluoride from water or wastewater can be removed by an ion exchange/adsorption process or by a coagulation, precipitation process. The ion exchange/adsorption can be applied to either concentrated or diluted solutions and they are capable of achieving complete removal under proper conditions. The method suitable for a given situation needs to be judiciously selected considering the various aspects. The paper presents the current information on fluoride in environment and its effects on human health, as well as available methods of defluoridation in detail.
Źródło:
World News of Natural Sciences; 2016, 3; 1-11
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The security (culture) rhombus. Redefining security environment
Autorzy:
Juliusz, Piwowarski,
Powiązania:
https://bibliotekanauki.pl/articles/891544.pdf
Data publikacji:
2019-10-07
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
security environment
redefining security environment
security rhombus
security triangle
Opis:
Goal The goal of this article is to present the author’s definition of security environment. It constitutes a redefinition and expansion of the narrow (four-element) approach presented in the White Book on National Security of the Republic of Poland. I propose a broad, eight-element approach. Methods I redefine security environment based on several premises. The first is the concept of the triangle of (the need for) security – the existence of this triangle necessitates and is sufficient for the need for security to arise. The second premise is the existence of the rhombus of security (culture), which necessitates and is sufficient for security to manifest, i.e. for the need for security to be satisfied. Results The above premises lead to the conclusion that the narrow approach to security environment should be ontically expanded to include elements comprising the triangle of the (need for) security and the security (culture) rhombus. This results in an eight-element definition of security environment. Conclusions The article illustrates an important issue in the security sciences – the need to expand the definition of security environment. I present and justify an alternative to the narrow approach to security environment, which is based on the narrow definition presented in the White Book on National Security of the Republic of Poland.
Źródło:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje; 2019, 34; 141-154
2299-4033
Pojawia się w:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
INTERACTION ANALYSIS IN AN INTERNATIONAL ASYNCHRONOUS LEARNING ENVIRONMENT
Autorzy:
Irani, Fariba Haghighi
Chalak, Azizeh
Powiązania:
https://bibliotekanauki.pl/articles/955421.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Tematy:
Interaction analysis
asynchronous learning environment
face-to-Face learning environment
synchronous learning environment
IRFI
Opis:
Interaction Analysis has been explored for the initiating topics, turn taking, and asking and answering questions in face-to-face learning environments during the last decades. This study investigated the form and sequence of the questions and answers in an asynchronous environment from a non-interventionist point of view. To conduct the research, 16 questions and answers from the discussion boards of an eight-week international online research course from 30 participants were copied, classified, and analyzed according to the Hmelo-Silver and Barrows’ (2008) grid. All the questions were classified as long-answer, short-answer, and task-oriented questions and their frequencies were calculated. Also, the presence of the Initiation, Response, and Feedback/Inquiry (IRFI) pattern was examined The results indicated that the largest number of questions fell under long-answer types and the participants were more motivated in responding the long-answer queries relating directly to the immediate studied materials or asking about definitions and personal ideas. The findings supported the idea that IRFI pattern might not be applicable in asynchronous environments. Therefore, the instructional patterns need to be designed carefully according to the needs of the new contexts. This study could enhance meaningful interactions in online educational settings such as language learning, teacher training, and professional development.
Źródło:
Teaching English with Technology; 2016, 16, 4; 33-47
1642-1027
Pojawia się w:
Teaching English with Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Landscape and the environment
Autorzy:
Wilkoszewska, Krystyna
Powiązania:
https://bibliotekanauki.pl/articles/914216.pdf
Data publikacji:
2019-07-31
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
aesthetics
art
environment
landscape
Opis:
The paper analyzes the concept of landscape and its various embodiments in art and nature. On the one hand, one can claim that our understanding of the landscape is constituted by conceptual oppositions like human/non-human, artifactual/natural, culture/nature; on the other, one may notice that landscapes occur in the space “between” these oppositions. Furthering this observation, I lodge an objection to the approach of certain exponents of environmental aesthetics who opt for replacing the notion of landscape by that of environment because I would argue that the former is still informative.
Źródło:
Polish Journal of Landscape Studies; 2019, 2, 4-5; 5-12
2657-327X
Pojawia się w:
Polish Journal of Landscape Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Organizational effectiveness of Polish enterprises in the context of changeability and unfriendliness of an environment
Autorzy:
Chudziński, Paweł
Cyfert, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/406911.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
organisation’s environment
environment changeability
environment friendliness
organizational effectiveness
Opis:
The dynamics of the processes taking place in an environment, which is rendered in the altered perception of the character of this environment, induces a need to find answers to the following questions: (1) How do managers perceive an environment in the dimensions of stability/ changeability and friendliness/unfriendliness? (2) Is there a correlation between the stability/changeability and friendliness/unfriendliness of an environment, i.e. if an environment is more stable, is it perceived as more friendly, and if an environment is more changeable is it perceived as unfriendly? (3) Does environmental stability/changeability as well as friendliness/unfriendliness exert any influence on organizational effectiveness? In an attempt to answer the above quoted questions, the article’s objective has been defined as a discussion on the interdependencies perceived by managers between an environment’s dimensions of stability/changeability and friendliness/unfriendliness (analysed in terms of institutional categories) and the organizational effectiveness of Polish enterprises. The managers evaluated the legal environment as the least stable. In their opinion, that milieu was also more intimidating than friendly. Concurrently, a technological environment was perceived by the respondents as the most stable and favourable. The results of the effected research allow forming a conclusion concerning the existing correlation between the friendliness and stability of particular categories of an environment, at the same time pointing out to the occurrence of correlations between stability/changeability and friendliness/unfriendliness of some categories of an environment and the organizational effectiveness of the examined enterprises.
Źródło:
Management and Production Engineering Review; 2019, 10, 1; 105-115
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of pH and soil environment
Autorzy:
Draszawka-Bołzan, Beata
Powiązania:
https://bibliotekanauki.pl/articles/1118852.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
pH
soil environment
Opis:
The pH dependence of adsorption reactions of cationic metals is due, in part, to the preferential adsorption of the hydrolyzed metal species, in comparison to the free metal ion (McBride, 1977; McLauren and Crawford, 1973; Davis and Leckie, 1978; Farrah and Pickering, 1976a,b; James and Healy, 1972; McBride, 1982; Cavallaro and McBride, 1980; Harter, 1983). The pH of the soil system is a very important parameter that directly influences sorption/desorption, precipitation/ dissolution, complex formation, and oxidation-reduction reactions. In general, maximum retention of cationic metals occurs at pH>7 and maximum retention of anionic metals occurs at pH<7. However, because of the complexity of the soil-waste system, with its myriad of surface types and solution composition, such a generalization may not hold true. For example, cationic metal mobility has been observed to increase with increasing pH due to the formation of metal complexes with dissolved organic matter.
Źródło:
World News of Natural Sciences; 2017, 8; 50-60
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Insight into contemporary operational environment
Autorzy:
Spilý, Peter
Powiązania:
https://bibliotekanauki.pl/articles/1878609.pdf
Data publikacji:
2014
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
operational environment
variables
operational areas
Opis:
The article is focused on the analysis of the contemporary operational environment, which is perceived as part of the wider security environment. The current operational environment is characterized as complex, dynamically changing and unpredictable. A systematic approach to the operational environment defines a set of its determining elements and their functional links. In the operational environment are additionally specified operational areas for individual commanders. Set of operational and mission variables allows the commanders to perform a comprehensive analysis and evaluation of these operational areas.
Źródło:
Security Dimensions; 2014, 11(11); 132-140
2353-7000
Pojawia się w:
Security Dimensions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Personal learning environment of the talented student - based on their own experiences
Autorzy:
Kamińska, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/628343.pdf
Data publikacji:
2019
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
personal learning environment, digital learning environment, information and communication technologies, the talented learners, personalized learning environment
Opis:
Aim. The purpose of the research is to depict how talented students create their personal learning environment. The author of that paper shows a difference that has occurred thanks to the comparison between the manner in which average students and talented students build their personal learning environment. Methods. The author has conducted quantitative research, by making a survey. The surveys were carried out among fifty talented students. This paper focuses on the presentation of their opinions. The respondents presented how they constructed their personal learning environment. Additionally, they expressed their viewpoints about their digital competences. Results. The analysis shows that talented students are familiar with the latest digital tools. It allows them to design their personal learning space effectively. They can collect and process information profitably. They are also keen to share their knowledge with other participants of an educational process via the Internet, using some complex and practical devices. Moreover, talented students prefer discussing educational problems with other students online. They use some appropriate tools, such as chat rooms and social networking services. According to the research, the author can conclude that talented students are able to build and improve their digital learning space very well. They seem to create their personal learning environment functionally and consciously. Conclusions. Talented learners use advanced searching strategies, methods of collecting and storing information, and also teamwork tools. It is particular that they are autonomous learners but they also like sharing knowledge with other learners. The level of information competences of the talented students is quite high.
Źródło:
Journal of Education Culture and Society; 2019, 10, 2; 76-84
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uczenie się w środowisku i dla środowiska jako wymóg współczesności
Learning in and for the environment as a contemporary prerequisite
Autorzy:
Kruk, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1386998.pdf
Data publikacji:
2020-11-18
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Tematy:
environment
learning
learning for the environment
learning environment
didactics
cultural change
Opis:
The article discusses the methods of defining and describing the processes of learning in what is generally acknowledged as the learning environment. In the contemporary pedagogical discourse the category of the “learning environment” (formerly associated with the surroundings of school and the classroom) is always expanding and acquiring new meanings, in the wake of ecological changes and the virtualisation of contemporary culture. The “learning environment” becomes a part of the ongoing descholarisation, which manifests itself, for example, in the “open space” movement, outdoor education or “Gesamtschule”, the trends related to the transfer of education outside of school. In the last part of the text, a postulate is formed to include a “learning for the environment” category to the pedagogical theory and practice. This stems from the need to deepen the social sensitivity of the threat of degradation of the entire ecosystem in which we live today.
Źródło:
Problemy Wczesnej Edukacji; 2020, 50, 3; 7-17
1734-1582
2451-2230
Pojawia się w:
Problemy Wczesnej Edukacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of methane slip from vessels on environment
Autorzy:
Herdzik, J.
Powiązania:
https://bibliotekanauki.pl/articles/243389.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
natural gas
methane slip
methane leakages
environment
impact on environment
Opis:
It was presented the ways of methane leakages during transport by sea. Due to greenhouse (GH), effect of carbon dioxide on atmosphere it was mentioned the carbon cycle on the Earth. Carbon dioxide is the main GH gas and it was indicated the change of concentration during last sixty years. It was increased about 30%. The possible methane leakages from vessels may increase the total GH effect due to high Global Warming Potential (GWP) of methane and other hydrocarbons. The carbon dioxide emission from engines is about 30% lower that from liquid marine fuels (diesel oils and heavy fuels). The liquefied natural gas (LNG) or compressed natural gas (CNG) seems to be a good ecological marine fuel. Due to methane leakages estimated on the level of 1-10% from mining to burning in the engines and the GWP on the level about 72-84 the look on methane as ecological fuel may change. It was calculated the equivalent effect (additional effect) of using methane as a marine fuel. Methane leakage on the level of 1-2.5% is equivalent to the same warming effect to the atmosphere as using popular marine diesel oils. Therefore, the leakage of methane during all operations should be as small as possible. In many cases, it is a serious problem for calculating the real leakages so they may be only estimated.
Źródło:
Journal of KONES; 2018, 25, 2; 149-155
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 6647

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