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Wyszukujesz frazę "SCBA" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Investigation on the workability and compressive strength of concrete by using bagasse ash from sugar mill
Autorzy:
Safayat, Mahmud
Islam, Md. Imamul
Rubieyat, Bin Ali
Islam, Md. Mofizul
Hasan, Md. Mahadi
Powiązania:
https://bibliotekanauki.pl/articles/1178003.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sugarcane bagasse ash (SCBA)
pozzolanic material and compressive strength
Opis:
The materials which are useless and unwanted is called waste product and this waste product is a burden and harmful to the environment. Sugarcane bagasse ash (SCBA) is one kind of waste which can be termed as the residue left over from burning sugar cane bagasse. The utilization of this waste may be very economical and can also solve the environmental problem. Silica and alumina are the main element of SCBA which is used as a pozzolanic material. This recycling procedure of SCBA reduces environmental pollution and this is also considered the cost-effective material. In this paper, SCBA replaces the cement as a weight of 5%, 10% and 15% which is considered. After completing the compressive strength test, the result shows that the compressive strength increases when 5% cement is replaced by sugarcane bagasse ash and this is the correct replacement of cement.
Źródło:
World Scientific News; 2018, 96; 191-201
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the external costs of urban transport investments: a socioeconomic analysis
Autorzy:
Kotowska, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/135394.pdf
Data publikacji:
2019
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
urban management
investment management
urban transport
external costs of transport
sustainable transport
SCBA
Opis:
Transport is a considerable source of pollution in cities. The social impacts of transport activities result from emissions of pollutants, greenhouse gases, and noise, as well as traffic accidents. Not every urban investment that reduces such ‘external’ effects of transport will be found acceptable by the public. In order to assess and communicate the social impacts of investments, it is necessary to calculate external costs appropriately. This article discusses issues with estimating the social costs and benefits of transport-related investments in cities. The article also provides a classification of social benefits from urban transport investments and proposes a general methodology for estimating such benefits. Due to the versatility of urban investments, there can be no single, universal method. The article proposes methods for analysing social costs and benefits on the basis of two sample urban investments.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 60 (132); 41-46
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Carbon Dioxide Inhalation on Psychomotor and Mental Performance During Exercise and Recovery
Autorzy:
Vercruyssen, M.
Kamon, E.
Hancock, P. A.
Powiązania:
https://bibliotekanauki.pl/articles/91095.pdf
Data publikacji:
2007
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
carbon dioxide
behavioral toxicology
SCBA
cognition motor performance
psychomotor performance
praca umysłowa
dwutlenek węgla
wydolność
praca fizyczna
wdychanie
Opis:
On separate days, 6 highly trained participants performed psychomotor tests while breathing for 60 min 3 carbon dioxide (CO2) mixtures (room air, 3% CO2, or 4% CO2) prior to, between, and following two 15- min treadmill exercise bouts (70% VO2max). Each individual was extensively practiced (at least 4 days) before testing began, and both gas conditions and order of tasks were counterbalanced. Results showed physiological reactions and work-related psychomotor effects, but no effects of gas concentration on addition, multiplication, grammatical reasoning, or dynamic postural balance. These findings help define behavioral toxicity levels and support a re-evaluation of existing standards for the maximum allowable concentrations (also emergency and continuous exposure guidance levels) of CO2. This research explored the selection of psychometric instruments of sufficient sensitivity and reliability to detect subtle changes in performance caused by exposure to low levels of environmental stress, in this case differential levels of CO2 in the inspired air.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2007, 13, 1; 15-27
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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