Wyniki wyszukiwania - Biblioteka Nauki

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Outdoor radon concentration in China

100%

Wu Q. , Pan Z. , Liu S. , Wang C.

Nukleonika

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2016

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tom Vol. 61, No. 3

373--378

EN

A nationwide survey was conducted in 2014 to investigate environmental outdoor radon level in 33 provincial cities across China. The radon detector used was a passive-type solid-state nuclear track detector, CR-39. Measurements were conducted under the same condition following the quality control programme. Outdoor radon concentrations in China ranged from 3 to 30.0 Bq·m−3. The annual arithmetic and geometric mean radon concentration were 14 and 13.2 Bq·m−3, respectively. The radon concentrations in the locations near or along coastline were lower than the average value, while those located in the inland area were higher. As a whole, the result showed no big difference from the data measured during the period 1983–1998. It demonstrated that the outdoor radon concentration level in China has not been changing remarkably for 20 years.

2

Software support for environmental measurement in quality at educational institutions

72%

Paulikova A. , Cekanova K. , Novakova R.

Production Engineering Archives

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2016

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tom Vol. 10, No. 1

13--16

EN

The analysed theme of this article is based on the training of environmental measurements for workplaces. This is very important for sustainable quality in technical educational institutions. Applied kinds of software, which are taught at technical educational institutions, have to offer the professional and methodical knowledge concerning conditions of working ambient for students of selected technical specialisations. This skill is performed in such a way that the graduates, after entering the practical professional life, will be able to participate in solutions for actual problems that are related to environmental protection by means of software support. Nowadays, during the training process it is also obligatory to introduce technical science. Taking into consideration the above-mentioned facts it is possible to say that information technology support for environmental study subjects is a relevant aspect, which should be integrated into the university educational process. There is an effective progress that further highlights the focus on the quality of university education not only for environmental engineers. Actual trends require an increasing number of software/hardware educated engineers who can participate in qualitative university preparation, i.e.IT environmentalists. The Department of Environmental Engineering at the Faculty of Mechanical Engineering, Technical University in Košice, Slovakia is an institution specified and intended for quality objectivisation. This institution introduced into the study programmes (“Environmental Management” and “Technology of Environmental Protection”) study subjects with the software support, which are oriented towards outdoor and indoor ambient and in this way the Department of Process and Environmental Engineering is integrated effectively and intensively into the area of measurement training with regard to the requirement of quality educational processes.

3

Diagnoza działań promocyjnych polskich miast w opinii mieszkańców

72%

Jankowska M.

Ekonomia. Rynek, Gospodarka, Społeczeństwo

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2012

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nr 31

140-160

EN

The purpose of this paper is to analyze city dwellers’ opinions on their hometowns’ promotional activities, taking into account the size of these urban communities. The PAPI method (Paper and Pencil Interview) as well as an online questionnaire were used to collect data. Standardized questionnaire was used as a research tool. Polish city dwellers were surveyed between May 7th and August 18, 2011. In addition, the author has compiled effectiveness evaluations of the promotion tools used by the cities as collected by the inhabitants in the framework of a TNS OBOP survey conducted in late October and early November 2010 on a sample of local community officials responsible for marketing. An analogous comparison has been used to assess media effectiveness in the cities’ promotion campaigns. This kind of compilation has led to identifying differences in the reception of public image campaigns by those who run them and those who are the target of the campaigns. That, in turn, can become useful data for local communities’ bureaus of promotion to analyze.

4

Lamination of Nanofibre Layers for Clothing Applications

72%

Knížek R. , Karhánková D. , Bajzik V. , Jirsak O.

Fibres & Textiles in Eastern Europe

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2019

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tom Vol. 27, no. 1 (133)

16--21

EN

Nanofibre membranes and nanofibre products represent break-through technology in many fields of industry. They are used for air or liquid filtration, and their unique properties are suitable for many new health products or when manufacturing clothes etc. Their biggest advantage is their high porosity and fineness. On the other hand, the disadvantage of these membranes is the fact that it is not a homogenous material/foil, but a layer of fibres or rather several fibre layers (hereafter we will always use the term nanomembrane). This structure has a very negative impact on some of its properties i.e. strength, abrasion resistance, pressure resistance etc. This work introduces a 2-layer-laminate and 3-layer laminate where one of the layers is made of nanofibres with a view to their use in the manufacturing of clothes for sport and outdoor activities. The nanofibre membrane laminate must protect the wearer from weather conditions like rain and snow and, at the same time, enable transferring of liquid moisture from the wearer’s body to the outside environment. Using lamination, we can connect the fine nanofibre membrane to a resilient textile material (knitted, woven or non-woven). This stronger textile material protects the more fragile nanomembrane from the outside environment (abrasion, friction etc.) while not diminishing its good comfort properties, like being windproof, waterproof and having good steam-permeability. The result of this work is a laminate with a high level of steam permeability, with minimum air permeability and a water column higher than 5000 mm. The tests carried out proved that during repeated washing cycles no delamination occurred and hydrostatic resistance decreased by approximately 20%.

PL

Nanowłókna i membrany z nich wytwarzane stanowią przełomową technologię w wielu dziedzinach przemysłu. Dzięki swoim unikalnym właściwościom znajdują one stosowanie w filtracji powietrza i cieczy oraz w wielu nowych produktach zdrowotnych i odzieżowych. Ich największą zaletą jest wysoka porowatość i delikatność. Z drugiej strony, wadą membran wytworzonych z nanowłókien, zwanych nanomembranami jest ich niejednorodność, jest to warstwa włókien lub raczej kilka warstw włókien. Ta struktura ma bardzo negatywny wpływ na niektóre jej właściwości, tj. wytrzymałość, odporność na ścieranie, odporność na ciśnienie itp. W pracy wytworzono dwu i trzywarstwowy laminat, w którym jedna z warstw jest wykonana z nanowłókien. Nanowłóknisty laminat do zastosowań w odzieży sportowej musi chronić użytkownika przed warunkami atmosferycznymi, takimi jak deszcz i śnieg, a jednocześnie umożliwiać przenoszenie płynnej wilgoci z ciała użytkownika do środowiska zewnętrznego. Za pomocą laminowania można połączyć cienką membranę z nanowłókien ze sprężystym materiałem włókienniczym (dzianina, tkanina lub włóknina). Mocniejszy materiał tekstylny chroni delikatniejszą nanomembranę przed zewnętrznym otoczeniem (ścieranie, tarcie itp.), a jednocześnie nie osłabia swoich korzystnych właściwości zapewniających komfort, takich jak wiatroodporność, wodoodporność i dobra przepuszczalność pary. Efektem pracy było wytworzenie laminatu o wysokiej przepuszczalności pary wodnej, minimalnej przepuszczalności powietrza i wodoodporności powyżej 5000 mm słupa wody. Przeprowadzone testy wykazały, że podczas powtarzanych cykli prania nie wystąpiło rozwarstwienie, a opór hydrostatyczny zmniejszył się o około 20%.