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All Journal Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Kedokteran Ibnu Nafis IIJSE
Rizky Syaputra
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Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Public Health Social Sciences

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Analisis Pengendalian Mutu pada Asam Lemak Bebas Minyak Kelapa Sawit Menggunakan Metode SQC Rizky Syaputra; Sofiyanurriyanti Sofiyanurriyanti Sofiyanurriyanti
JTI: Jurnal Teknik Industri Vol 8, No 1 (2022): JUNI 2022
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jti.v8i1.15488

Abstract

PT. Socfindo Indonesia Seunagan Plantation is a company that produces palm oil and palm kernel (PKO). This observation aims to determine the parameters of free fatty acids in PT. Socfindo Indonesia Seunagan Plantation. Is it within the quality control limits based on the Xbar and Rbar control charts, as well as investigations into the causes of improving the quality of palm oil with Free Fatty Acid (FFA) parameters. Based on the results of the Crude Palm Oil (CPO) quality control chart, the number of samples for free fatty acid levels, according to the control chart Xbar = 2.1375 and Rbar = 1.2308, there are some data that are out of the control limit UCL = 2.7323, CL = 2.1375 LCL = 1.5427 after modification of Xbar and Rbar control chart. Based on the results of observations, interviews and fieldwork, there are five factors that affect the quality of Crude Palm Oil (CPO). The factors themselves are raw materials, work environment, people, machines and work methods and techniques.This case study was conducted on a company that produces palm oil and palm kernel (PKO). This observation aims to determine the parameters of free fatty acids in this company. Observe whether it is within the quality control limits based on Xbar and Rbar control charts. Then, investigate the cause of the increase in the quality of palm oil with the Free Fatty Acid (FFA) parameter. Based on the results of the Crude Palm Oil (CPO) quality control chart, the number of samples for free fatty acid levels, according to the control chart Xbar = 2.1375 and Rbar = 1.2308, there are some data that are out of the control limit UCL = 2.7323, CL = 2.1375 LCL = 1.5427 after modification of Xbar and Rbar control chart. The results of observations show that in interviews and in the field there are five factors that affect the quality of Crude Palm Oil (CPO). The factors themselves are raw materials, work environment, people, machines and work methods and techniques.
Water Quality and Hydrochemical Studies in Watersheds Cikapundung River Case Study Peny Supriatno; Rizky Syaputra; Robertho Kadji; Lia Alfianita
Budapest International Research and Critics Institute-Journal (BIRCI-Journal) Vol 5, No 3 (2022): Budapest International Research and Critics Institute August
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v5i3.6010

Abstract

Cikapundung River is one of the rivers that plays an important role as a water source in the city of Bandung. This river has great potential to be used as water supply in the city of Bandung. For further utilization, it is necessary to study the quality and hydrochemistry of water in the watershed (DAS), especially in the Cikapundung River. Based on the studies that have been carried out, it was found that the water quality is quite poor. Poor water quality is caused by a continuous process of pollution, which causes changes in the value of the physical and chemical parameters of water in the Cikapundung watershed. This process is further supported by the occurrence of dilution caused by the high intensity of rain in the city of Bandung. According to the graphical representation of the hydrochemistry of water, the type of water in the form of calcium bicarbonate was obtained based on the Piper Diagram. Bicarbonate water comes from the weathering of rocks or minerals near the surface. Supported by graphical representation using Durov Diagram, water in the Cikapundung watershed is intermediate water that has undergone ion exchange. This is evidenced by the Stiff Diagram which groups alkaline earth cations which are larger than alkali metals, and weak acid anions which are larger than strong acid anions. These three graphic representatives provide information about the evolutionary processes that occur in the Cikapundung watershed.
The Influence of Product Variety, Price, Promotion, and Service Quality on Repurchase Interest in Raja Kebab and Rantauprapat Burger Culinary Delights Kiki Armada. S; Siti Lam’ah Nasution; Rizky Syaputra
Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) Vol 5 No 2 (2022): Sharia Economic: July, 2022
Publisher : Sharia Economics Department Universitas KH. Abdul Chalim, Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31538/iijse.v5i2.4056

Abstract

This study aims to analyze the effect of product variations, prices, promotions, and service quality on repurchase interest. The type of research used is explanatory research with an accidental sampling technique. The number of samples set is 100 respondents. Data analysis in this study used SPSS version 22 software. The results showed that product variations affected repurchase interest, price influenced repurchase interest, promotions influenced repurchase interest, and service quality influenced repurchase interest. Simultaneously, product variation, price, promotion, and service quality affect repurchase interest.
IDENTIFIKASI POLA SIDIK BIBIR DAN UKURAN BIBIR PADA ETNIS TIONGHOA, TAMIL, BATAK DI LINGKUNGAN MEDAN PETISAH Wan Muhammad Ismail; Rizky Syaputra
Jurnal Kedokteran Ibnu Nafis Vol. 9 No. 2 (2020): Desember 2020
Publisher : Fakultas Kedokteran Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jkin.v9i2.423

Abstract

Pada kasus kasus forensik maupun non forensic sidik bibir digunakan sebagai alat identifikasi Pada kasus forensik sidik bibir digunakan untuk memecahkan kasus pembunuhan, sedangkan pada kasus non forensik diperuntukkan untuk mengidentifikasi umur, jenis kelamin, ras dan sebagainya. Penelitian ini bermaksud untuk mengetahui identifikasi pola sidik bibir dan ukuran bibir pada etnis Batak, Tionghoa, Tamil .Penelitian ini merupakan penelitian deskriptif analitik dan dilakukan di Kel. Petisah bagian Tengah, Kec. Medan Petisah. Total sampel berjumlah 90 orang masing-masing dibagi setiap kelompok etnis menjadi 30 orang. Berdasarkan pola sidik bibir pada etnis Batak paling banyak pola sidik bibir Tipe II (30%) dan IV (30%), Pada etnis Tamil paling banyak pola sidik bibir pada Tipe II (50%). Pada etnis Tionghoa paling banyak pola sidik bibir pada tipe II (43%). Rata-rata panjang dan lebar bibir pada etnis Batak 2.93 cm, sedangkan lebar bibir responden 5.17 cm. Pada etnis Tamil rata-rata panjang bibir responden 3.0 cm, sedangkan lebar bibir 5.37 cm. Pada etnis Tionghoa rata-rata panjang bibir responden 3.17 cm dan lebar bibir responden 5.47 cm. Perbedaan etnis dalam setiap subjek yang diteliti dikaitkan dengan pengaruh warisan atau keturunan
Co-Authors Kiki Armada. S Lia Alfianita Peny Supriatno Robertho Kadji Siti Lam’ah Nasution Sofiyanurriyanti Wan Muhammad Ismail