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Wyszukujesz frazę "Abdullah, Rasheed" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Prospective study on safety climate of surface mining in Pakistan
Autorzy:
Jiskani, Izhar Mithal
Chalgri, Saleem Raza
Memon, Safiullah
Shahani, Niaz Muhammad
Qureshi, Abdullah Rasheed
Jarwar, Zuhaib Aslam
Powiązania:
https://bibliotekanauki.pl/articles/1839044.pdf
Data publikacji:
2020
Wydawca:
Główny Instytut Górnictwa
Tematy:
safety climate
occupational hazards
mine workers
surface mining
mine
health and safety
klimat bezpieczeństwa
zagrożenia zawodowe
górnicy
górnictwo odkrywkowe
kopalnia
bhp
Opis:
The purpose of this study was to assess miners’ perceptions about the safety climate of their workplace. To achieve the research aim, the relationship between demographic characteristics and occupational hazards was first determined, and finally, the relationship of safety climate with occupational hazards and health-seeking behavior was discovered. The data was collected through a self-reporting questionnaire. The results revealed that the subjects have to deal with severe occupational hazards, and they possess poor health-seeking behavior. A safety climate assessment showed that only one of the seven dimensions (i.e. safety communication, learning, and trust in co-worker safety competence) was at a satisfactory level. With respect to the first objective, we found that age, education, and experience were statistically significant with occupational hazards, while marital status had no significant impact on occupational hazards. Regarding the second objective, three dimensions (management safety justice, safety communication, learning, and trust in co-worker safety competence, and workers’ trust in the efficacy of safety systems) were significant predictors of occupational hazards. The study reflects that workers’ participation is the main factor in setting up an adequate safety climate within the organization. Suggestions provided in this study could provide useful information to managers and safety practitioners to improve safety performance and promote the safety climate in the organization.
Źródło:
Journal of Sustainable Mining; 2020, 19, 1; 11-18
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biosorption of Heavy Metals from Synthetic Wastewater by Using Macro Algae Collected from Iraqi Marshlands
Autorzy:
Bahaa, Shaymaa
Al-Baldawi, Israa Abdulwahab
Yaseen, Safaa Rasheed
Abdullah, Siti Rozaimah Sheikh
Powiązania:
https://bibliotekanauki.pl/articles/123810.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adsorption
Cladophora
copper
cadmium
chromium
aqueous solutions
Opis:
Biosorption is fast, effective and low cost process. It takes place in a wide range of temperature and it can be used for almost all types of heavy metals. The aim of this study was to investigate the ability of locally collected green macro algae to remove copper, chromium and cadmium from synthetic wastewater. The fresh algae were converted into dry powder as biosorbent. In the investigations, 1 g of macro algae powder was exposed to synthetic waste water contaminated with 10 mg/L concentration of copper, chromium and cadmium in separate exposure for 2 hours. The best removal efficiency for copper, chromium and cadmium were 70%, 80% and 85%, respectively, from the initial concentration of 10 mg/L. While macro algae are abundantly available in marshlands of south Iraq, it can be preferably utilized as biosorbent to remove heavy metals from the industrial wastewater.
Źródło:
Journal of Ecological Engineering; 2019, 20, 11; 18-22
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental and Performance Analyses with Frequently Discrete Usage of the Hot Storage Tanks
Autorzy:
Qandil, Ahmed
Al Rababa’a, Khalid
Aljabarin, Nader
Al Ganem, Zaid Abu
Abdullah, Rasheed
Powiązania:
https://bibliotekanauki.pl/articles/123418.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
storage tank
discrete usage
stratification
thermocline thickness
mix number
heat transfer
usable energy
Opis:
Hot water storage tanks are devices with high energy consumption, used widely in residential, industrial and commercial sectors. The hot storage tank is a key device in numerous applications such as electrical heaters, solar thermal storage, solar electrical energy production and many others. Its superior technology is favorable for the designers and has a great impact on the market competition. Hot water storage tanks were studied under continuous usage feature, for different inlet types, flow rates, thermal stratification in static and dynamic modes, both experimentally and numerically. The real discrete usage feature has not been analyzed in a proper way. In this study, the experimental and performance analyses with frequent discrete usage of the hot storage tank were performed. Different flow rates of 3, 6, and 9 l/min with 5, 10 and 20 min discrete usage waiting periods were studied. It was found that the thermocline thickness and mixing number increases for both increasing the flow rate due the increment in turbulent mixing potential and increasing the waiting period due to the increase in heat transfer time available between the hot and cold layers. The real data was drawn as is to permit further analyses and data comparison to other researchers. The effect of waiting periods can be used in solar HST to maximize the efficiency of solar collectors as the solar collector efficiency is high at low temperatures.
Źródło:
Journal of Ecological Engineering; 2019, 20, 1; 52-60
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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