Optimization of exposure factors for X-ray radiography non-destructive testing of pearl oyster

Susilo, Susilo; Yulianti, Ian; Addawiyah, Amartya Fierzi Al; Setiawan, R.

doi:10.1088/1742-6596/983/1/012004

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…Mercury, which is in the aquatic environment as a result of human activity, has a limited spread, because it is a liquid heavy metal with a larger weight than water, so that its concentration in the water body is not far from the point of contamination. The pollutants that are in the waters are affected by the speed of the flow of the river, which, as the flow is slowed down, leads to the accumulation of the pollutant in one contaminated area (Yulianti et al, 2018). The topography of the Lower D.A.…”

Section: Resultsmentioning

confidence: 99%

Spatial distribution of mercury pollution in the Mempawah River Watershed, West Kalimantan – Indonesia

Aji,

Setiawan,

Abidin

et al. 2024

ijcms

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Mempawah River Basin (DAS) is a water resource for the people of Mempawah and Landak Regencies. The community uses the Mempawah River as the main medium for agricultural needs, plantations, and the rearing of fish for consumption. Awareness of health that comes from water with its various uses, there has been consumer anxiety when consuming air along with agricultural and fishery products that are relevant to water use in the Mempawah watershed. This phenomenon occurs because the water resources of this watershed area have been polluted by mercury as a result of unlicensed gold mining activities in its spatial extent. This research was conducted to analyze the level of mercury pollution in the river basin, due to illegal gold mining activities. The method applied was purposive sampling, through 29 water sample points located in the upstream, middle and downstream. The sample results were explained using the Atomic Absorption Spectroscopy (AAS) tool. Then, from a spatial perspective, the location of PETI activities was analyzed spatially using Spatial Dynamic Modeling Geographical Information System software with kriging interpolation techniques, to predict the distribution of mercury pollution. The results of the research show that in the middle part of the Mempawah watershed, there is mercury pollution from 0.0023mg/lt to 0.0083 mg/l and has exceeded the threshold determined by PP No. 22 of 2021. The upstream and downstream parts of the Mempawah watershed are not polluted by mercury, because the PETI activity point is only in the middle part of the Mempawah watershed. These findings provide suggestions that the allocation of Mempawah River water as the sole raw material for corporate entities and its use for growing fish communities should be more closely monitored, to avoid danger, due to the chain of heavy metal contamination in the form of Mercury.

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Section: Resultsmentioning

confidence: 99%

Spatial distribution of mercury pollution in the Mempawah River Watershed, West Kalimantan – Indonesia

Aji,

Setiawan,

Abidin

et al. 2024

ijcms

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“…Gypsum which would be exposed, was cut to certain size area depending on exposition recorded using Digital Single Lens Reflex (DSLR) which was connected to a computer hence picture may be observed in computer monitor as can be seen in Figure 2 [9]. Gypsum was exposed using X-ray generator with exposition factor of mA, s, and distance respectively 16 mA; 0.2 s; and 100 cm.…”

Section: Image Acquisitionmentioning

confidence: 99%

Calcium Sulfate Dihydrate (gypsum) Quality Test Using Radiography Non Destructive Test (RNDT)

Himawan

Taufiq

Setiawan

et al. 2019

KSS

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Calcium Sulfate Dyhidrate/gypsum is a material commonly found in nature which is used at industrial site for making a wall, roof, etc. One of the problems found in material industry is crack deffect, white crack defects is very difﬁcult be identiﬁed it visibility. Radiography Non-Destructive Test (RNDT) is non destructive test supported by digital radiographic producing digital image. This work aims to determine the gypsum properties to ﬁnd out crack defect using RNDT. Radiographic image depends on exposure factors (kV, mA, s, and SID). Digital image can be proceed using OctaveGUI to determine the crack defect area, image processing using Prewitt detection. Radiographicdigitalresultof3gypsumboards(a,bandc)and2gypsumproﬁlsamples (d and e) were found the crack on each samples. RNDT was perfomed using X-ray voltageat60kVona,b,c,d,andesamples.Eachsamplescrackareavalueare158.13 mm2; 127.43 mm2; 196.81 mm2; 73.97 mm2; dan 18.80 mm2. Others RNDT was using X-ray voltage at 70 kV on samples a, b, c, d, and e. Each samples crack area value are 220.62 mm2; 1,711.57 mm2; 209.33 mm2; 76.50 mm2; dan 11.18 mm2. In conlusion, the crack area values obtained can be used as RNDT.

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X-ray application of micro-computed tomography for biological sample test

Susilo¹,

Wijayanti²,

Azmi³

et al. 2023

AIP Conference Proceedings

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Optimization of exposure factors for X-ray radiography non-destructive testing of pearl oyster

Cited by 6 publications

References 11 publications

Spatial distribution of mercury pollution in the Mempawah River Watershed, West Kalimantan – Indonesia

Spatial distribution of mercury pollution in the Mempawah River Watershed, West Kalimantan – Indonesia

Calcium Sulfate Dihydrate (gypsum) Quality Test Using Radiography Non Destructive Test (RNDT)

X-ray application of micro-computed tomography for biological sample test

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