Radiological assessments of quarry dust from quarries in Kelantan, Malaysia

Abdullah, Abdul Hakim; Jaikol, Exnikol; Arshad, Nursyairah; Saat, Ahmad

doi:10.1063/1.5089321

Cited by 3 publications

(6 citation statements)

References 15 publications

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“…The External (H ex ) hazard indices of each sample are calculated using Eq. (2) [ [17] , [18] , [19] , [20] ].

…”

Section: Methodsmentioning

confidence: 99%

“…Estimation of the annual effective dose received by a person can be calculated from the absorbed dose rate by applying Eq. (5) [ 17 ].

Where: D γ is absorbed dose rate in μSv/h, T is the total number of hours annually (8760 h), DF is the conversion factor of 0.7 Sv Gy −1 and OF is the occupancy factor (0.2 for outdoor and 0.8 for indoor) [ 1 ].…”

Section: Methodsmentioning

confidence: 99%

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Assessment of natural radioactivity and associated radiological risks from soils of Hakim Gara quarry sites in Ethiopia

Regassa,

Raba,

Chekol

et al. 2023

Heliyon

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“…The External (H ex ) hazard indices of each sample are calculated using Eq. (2) [ [17] , [18] , [19] , [20] ].

…”

Section: Methodsmentioning

confidence: 99%

“…Estimation of the annual effective dose received by a person can be calculated from the absorbed dose rate by applying Eq. (5) [ 17 ].

Section: Methodsmentioning

confidence: 99%

Assessment of natural radioactivity and associated radiological risks from soils of Hakim Gara quarry sites in Ethiopia

Regassa,

Raba,

Chekol

et al. 2023

Heliyon

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“… Locations of measurements near Žervanjska quarry ( 1 , 2 , 9 ), near Brenzberg-Točak quarry ( 7 , 8 , 19 , 20 , 21 , 22 , 25 , 26 ), near the road between those quarries ( 3 , 4 , 5 , 6 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ) and near Lake Orahovac ( 23 , 24 ) (Source: Google Maps) …”

Section: Methodsmentioning

confidence: 99%

“…Quarries are considered a potential source of increased radioactivity, as stone digging can bring material containing increased radioactive content to the surface ( 3 , 4 ). Research into potentially negative radiological impact of quarries has been focused on the exposure of quarry workers to ionising radiation ( 5 , 6 , 7 , 8 ) and on radioactive content analysis of quarry products ( 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ). However, research of radiological effects of a quarry on its surroundings is not common.…”

mentioning

confidence: 99%

Radiological impact of an active quarry in the Papuk Nature Park, Croatia

Petrinec

Rašeta

Babić

2022

Archives of Industrial Hygiene and Toxicology

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Papuk Nature Park, unlike most similar parks and preserves in the world, contains active quarries. Quarries dig stone from the ground, creating dust and exposing deeper, potentially more radioactive layers. Since the forest trails in the Park lead right up to the quarries, we believed it was important to determine the radiological impact of the quarries on the Park environment. We measured ambient dose rate equivalent H*(10) and sampled moss at 26 Park locations along two of four quarries, along the road between them, and near Lake Orahovac, a very popular tourist destination close to the quarries. Moss is a standard bioindicator of exposure to heavy metals, including radionuclides. Using-gamma ray spectrometry we determined the activity concentration of 137Cs and of representative naturally occurring radionuclides – 238U, 226Ra, 210Pb, 232Th, and 40K – in sampled moss. H*(10) at selected locations was similar to the background H*(10) measured continuously all over Croatia. The ranges of measured activity concentrations of 137Cs and naturally occurring radionuclides in moss did not differ significantly from other parts of Croatia and nearby countries.

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“…According to the view of Abdullah, if one does not have the sanad of his teacher, then one speaks according to his desires without reference to the Qur'an and al-Hadith (Abdullah, 2011b). Therefore, one must first refer to a scholar or master in receiving knowledge learned from a teacher.…”

Section: Introductionmentioning

confidence: 99%

Study on Elements of Teacher Authority in Islamic Online Learning (E-Talaqqi)

Hamzah,

Zainol,

Hassan

2022

Al-Hayat J. Islamic. E.

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Learning through a teacher or talaqqi is one of the learning methods practised in Islamic learning and education since the time of the Prophet Muhammad. This method is applied today, especially in madrasas and Islamic boarding schools. Industrial Revolution 4.0 and the latest Covid-19 pandemic outbreak, online learning is the best alternative for teachers and students. This is the choice of learning method, especially in Islamic Studies education. This article aims to examine the elements of teacher authority in Islamic online learning. This research method is a mixed-method design using qualitative and quantitative data. Researchers collected data by interviewing four informants from their fields of expertise and questioning 254 respondents using a questionnaire. Data were analyzed after being collected using thematic analysis and Winsteps analysis. The results showed that teacher authority has five elements: an educational background in subjects, namely teacher qualifications, teacher accreditation, information skills, language mastery and technology mastery. This element is essential for verifying the qualifications of teachers involved in online learning, especially for Islamic education.

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Radiological assessments of quarry dust from quarries in Kelantan, Malaysia

Cited by 3 publications

References 15 publications

Assessment of natural radioactivity and associated radiological risks from soils of Hakim Gara quarry sites in Ethiopia

Assessment of natural radioactivity and associated radiological risks from soils of Hakim Gara quarry sites in Ethiopia

Radiological impact of an active quarry in the Papuk Nature Park, Croatia

Study on Elements of Teacher Authority in Islamic Online Learning (E-Talaqqi)

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