Due to limited facilities for waste management, dye waste is often disposed of in large quantities without adequate processing, thus causing environmental pollution. Methylene blue is one of the most commonly affected dyes. This research aimed to study the efficiency of bentonite-modified rice husk biochar for the photodegradation of methylene blue dye. Materials were prepared using the impregn…
The textile industry contributes to dye waste, one of which is methylene blue. Methylene blue is a cationic base dye with a heterocyclic structure with the chemical formula C16H18N3SCl. It is toxic and difficult to degrade naturally. Therefore, a photodegradation method is needed to reduce this dye. In this study, a composite material based on areca nut (Areca catechu L.) peel hydrochar impregn…
This study involved the synthesis of CeO₂/CuBi₂O₄ composites used for the photodegradation of Congo red dye. The synthesized composites were characterized using XRD, SEM-EDS, and UV-Vis DRS. The XRD characterization results showed a crystal size of 17.7 nm with the highest peak at 2θ = 27.99°. SEM-EDS characterization results showed that the CeO₂/CuBi₂O₄ composite had a granular m…
Heart disease is one of the leading causes of death worldwide, making accurate early detection methods essential. Machine learning can be used to classify patients conditions, but data imbalance and feature selection can affect model performance. This study applied Chi-Square feature selection and the Synthetic Minority Over-sampling Technique (SMOTE) to 918 patient records with 11 clinical att…
The primary emissions from coal-fired power plants (PLTU) contain air pollutants such as carbon monoxide (CO) and nitrogen dioxide (NO₂). Occupational exposure to these gases in the workplace environment of a coal-fired power plant has the potential to increase the risk of respiratory disorders. This study aims to analyze the environmental health risks of exposure to carbon monoxide (CO) and …
Chinese cabbage is an important vegetable in Asia, particularly in China. Chinese cabbage leaves are stalked, oval, whitish-green, and shiny, do not form heads, grow somewhat upright or semi-horizontal, arranged in a dense spiral, attached to a depressed stem. This study aimed to determine the heavy metal lead (Pb) content in the roots and shoots of Chinese cabbage plants and its relationship t…
Chinese cabbage (Brassica pekinensis L.) is a horticultural vegetable that is widely cultivated because it is easy to grow, has economic value, and has high nutritional content. In its growth, this plant requires micronutrients, one of which is Zinc (Zn), which plays an important role in physiological processes. Deficiencies or excesses of Zn can affect the growth and quality of plant yields. I…
Eczema is a skin condition that can be triggered by food allergens, requiring sufferers to carefully examine the composition of packaged food products. The complexity of ingredient labels often makes manual identification difficult. This study aims to develop a food composition classification system to detect allergens that trigger eczema using the Convolutional Recurrent Neural Network (CRNN) …
Terjadinya suspensi saham yang pada awalnya bertujuan sebagai alat melindungi investor dari keabnormalan suatu emiten menimbulkan ketidakpastian hukum akibat kurangnya pengaturan jangka waktu dari suspensi saham tersebut. Suspensi saham secara berkepanjangan ini tentunya menimbulkan kerugian bagi investor. Skripsi ini memiliki permasalahan yaitu bagaimana ketentuan hukum yang mengatur suatu sah…