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SINTESIS BIODIESEL DARI MINYAK DEDAK PADI DENGAN KATALIS PADAT DARI LIMBAH PENGOLAHAN BAUKSIT (RED MUD)
Jurnal Inovasi Teknik Kimia
Vol 9
, No 4
(2025)
Red mud, a solid waste from extraction process of bauxite mineral in Alumina Industry, was utilized as a solid catalyst for biodiesel production from rice bran oil. Red mud catalyst was prepared at calcination temperature of 800 °C and calcination time of 4 hours. The performance of this catalyst will be evaluated in terms of molar ratio of oil to methanol to, reaction temperature, and catalyst concentration. The results show that biodiesel yield is increasing by increasing molar ratio of methan...
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PENGOLAHAN AIR LIMBAH PRODUKSI MIE INSTAN MENGGUNAKAN METODE OKSIDASI LANJUTAN H2O2 DENGAN FOTOKATALIS TiO2
Jurnal Inovasi Teknik Kimia
Vol 9
, No 4
(2025)
Air Limbah mie instan dihasilkan dari mesin proses produksi seperti boiler, cleaning penggorengan berupa minyak goreng bekas. Karakteristik air limbahnya dapat ditentukan berdasarkan bahan baku yang digunakan sebagai bahan olahan seperti tepung terigu dengan kandungan karbohidrat, protein, vitamin dan mineral serta minyak kelapa. Kandungan tersebut dapat mengubah komposisi air sehingga berpengaruh pada nilai COD, BOD, pH, TSS, minyak dan lemak yang tidak sesuai baku mutu. Kualitas air yang menur...
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Pentingnya Penimbangan Berat Badan Balita Setiap Bulan di Desa Bung Bak Jok Aceh Besar
Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia
Vol 4
, No 1
(2025)
Toddler weight monitoring is a routine activity carried out by the integrated health post (posyandu). Routinely weighing toddlers means that toddler growth can be monitored intensively. The sooner it is found, the sooner cases of malnutrition or severe malnutrition will be handled. Data from the Ministry of Health shows that 65% of active integrated health posts in Indonesia have not reached the national target of 80%. The purpose of this activity is to optimize integrated health post activities...
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Pengaruh Perilaku Bullying Terhadap Prestasi Belajar Siswa Korban Bullying Di SMP Negeri 42 Semarang
Jurnal Psikoedukasia
Vol 2
, No 3
(2025)
Latar belakang penelitian ini adalah banyaknya permasalahan siswa kelas IX SMP Negeri 42 Semarang, yaitu perilaku bullying. Beberapa siswa melakukan bullying seperti mengejek, memukul, menendang, ada juga yang memanggil temannya dengan sebutan lain akhirnya berkelahi. Tujuan penelitian ini untuk mengetahui pengaruh bullying terhadap prestasi belajar. Penelitian ini menggunakan penelitian kuantitatif dengan jenis penelitian Non Experiment yakni menggunakan bentuk ex post facto. Populasi penelitia...
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The Role of Islamic Economics in Managing Wealth and Curbing the Culture of Hedonism to Achieve Maximum Utility
Proceeding. of The International Conference on Business and Economics
Vol 3
, No 1
(2025)
The crazy rich phenomenon as a form of modern materialism and hedonism has poisoned the lives of the young generation of Indonesia in the current millennial era. They have been eroded by worldly pleasures. Tempted by the glamorous and luxurious lifestyle of the crazy rich, they are willing to show off their wealth that is not actually theirs. The purpose of this study is to determine wealth in the Islamic perspective. Qualitative research methods with a descriptive approach are sourced from lite...
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Concept of Wealth Circulation in Islam According to the Perspective of Islamic Economics
Proceeding. of The International Conference on Business and Economics
Vol 3
, No 1
(2025)
The concept of circulation in Islam is a holistic approach that considers various aspects of life, including economic, social, and spiritual dimensions. It emphasizes the importance of harmony and harmony in society, focusing on principles of amal, social justice, and ethical conduct. This approach encourages individuals to interact and interact with others, fostering harmony and unity in all aspects of life. circulation also encourages individuals to be innovative in addressing challenges, fost...
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Gambaran Tindakan Pengambilan Keputusan Karir pada Siswa Kelas XII SMA Negeri 1 Sutojayan
Sinar Dunia: Jurnal Riset Sosial Humaniora dan Ilmu Pendidikan
Vol 4
, No 1
(2025)
Adolescence is a time when we, as students, are required to have the ability to make career decisions. Career selection is an important part of the decision-making process in the life of every individual. The purpose of this study was to determine the description of career decision-making actions in class XII students of SMA Negeri 1 Sutojayan. The research method used by the author is qualitative. The number of subjects used in this study was 5 students. This study concludes that, in general, s...
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Prototype Biodigester Biogas dengan Sistem Monitoring Berbasis Internet of Things (IoT)
Jurnal Universal Technic (UNITECH)
Vol 4
, No 1
(2025)
Biogas is a renewable energy source with significant potential to reduce dependence on fossil fuels. However, conventional biodigester systems still face several challenges in monitoring methane gas production. Therefore, this research aims to design and develop a biogas digester prototype equipped with a stirrer and an Internet of Things (IoT)-based sensor to detect methane (CH4) gas levels. The research methodology involves designing a biodigester with an automatic stirrer and an MQ-2 sensor t...
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Gambaran Ketidakpuasan Tubuh pada Remaja Putri Kelas VIII di SMP Negeri 2 Sragen
Sinar Dunia: Jurnal Riset Sosial Humaniora dan Ilmu Pendidikan
Vol 4
, No 1
(2025)
Individuals who assume that their physical condition is not the same as their ideal body concept, then the individual will feel physically lacking, this condition causes the individual to be unable to accept their condition as it is so that they can experience body dissatisfaction. The purpose of this study was to determine the picture of body dissatisfaction in adolescent girls. This study used qualitative method with 4 female adolescents in grade VIII at SMP Negeri 2 Sragen. The results of thi...
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Urban Violent Crime Dynamics in Kuala Lumpur and Putrajaya: Utilizing Spatial Temporal Techniques
Redzuan, Mohd Sofian
; Masron, Tarmiji
; Yusuf, Adibah
; Junaini, Syahrul Nizam
; Kimura, Yoshinari
; Barawi, Mohamad Hardyman
; Salleh, Mohamad Suhaidi
; Rainis, Ruslan
; Ahmad, Azizul
Forum Geografi
Vol 39
, No 1
(2025)
This paper investigates the patterns of violent crime in Kuala Lumpur and Putrajaya between 2015 and 2020 using advanced spatial analysis techniques, including Spatial Autocorrelation, Standard Deviational Ellipse (SDE), and Mean Centre (MC). The study analyzes the spatial distribution and temporal dynamics of violent crimes, tracks shift in crime hotspots and examines the influence of socio-economic factors on these patterns. Findings reveal that violent crimes predominantly occur in the late a...
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