Claim Missing Document
Check
Articles

Found 15 Documents
Search

PREDICTION AND REDUCTION OF BACKBREAK IN BLASTING OPERATIONS USING RANDOM FOREST METHOD AT PAMUBULAN LIMESTONE QUARRY Handayana, Raden Haris; Hartanto, Adrian; Lubis, Jihan Farhan
Prosiding Temu Profesi Tahunan PERHAPI 2023: PROSIDING TEMU PROFESI TAHUNAN PERHAPI
Publisher : PERHAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Backbreak pada operasi peledakan merupakan hasil yang tidak diinginkan yang menyebabkan terbentuknya retakan di belakang barisan terakhir peledakan. Hal ini menyebabkan tidak terciptanya smooth freeface, mengurangi efisiensi pengeboran, dan fragmentasi boulder pada peledakan berikutnya. Untuk mengatasi masalah ini, dilakukan upaya untuk memprediksi dan mengurangi backbreak dengan mempertimbangkan berbagai parameter peledakan seperti sifat batuan, burden, spasi, kedalaman lubang, stemming, powder column, powder factor, total lubang, total baris, desain peledakan, interhole timing, interrow timing, back row control, dan time windows. Karena kompleksitas interaksi di antara parameter-parameter tersebut, dalam makalah ini digunakan metode Random Forest yang terdiri dari banyak pohon keputusan. Ditemukan bahwa koefisien determinasi antara backbreak aktual dan prediksi adalah 83,89%, sedangkan kesalahan relatifnya adalah 13,12%+/- 1,30%. Dengan menerapkan hasil dari penelitian ini, backbreak dapat dikurangi dari 149,38 menjadi 50,04 cm.
Formulasi Pembuatan Jelly Powder Flavour Vanilla Meggunakan Gracilaria Sp Dengan Penambahan Karagenan Seftiono, Hermawan; Hartanto, Adrian; Taufik, Moh.
JURNAL AGROINDUSTRI HALAL Vol. 11 No. 1 (2025): Jurnal Agroindustri Halal
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/jah.v11i1.11525

Abstract

Jelly powder is a product that can be used as the main raw material in the manufacture of jelly drinks, jelly candy, jelly pudding, and others; the primary function of jelly powder is to improve the viscosity and strength of the gel in the product you want to make. In this research, Jelly powder used Gracilaria sp. as the main ingredient and carrageenan as a gelling agent in jelly products. Gracilaria sp. was chosen because it is relatively easy to cultivate and abundantly available in the sea. This research aimed to determine vanilla flavored jelly powder's formulation and analyze the sensory properties. The methods used in the sample extraction process are soaking, drying, bleaching, acidification, and grinding. The data obtained were then processed by one-way analysis of variance (ANOVA) at a 95% confidence level using Duncan's further test. The best formulation from the results of the organoleptic analysis is F3. This formulation has hedonic values for taste, aroma, texture, aftertaste, and overall, respectively, 3.52 ± 0.82, 3.18 ± 0.8, 3.9 ± 0.78, 3.73 ± 0.7, and 3.58 ± 0.31. This formulation showed good organoleptic values across all parameters, indicating its potential to be the best formula for producing jelly powder
Sila Kelima Pancasila Sebagai Landasan Penegakan Hukum: Upaya Membangun Sistem Perdagangan Yang Adil dan Berkelanjutan Ramadhani, Kalya Sukma; Shafwah, Salsabila; Lovita; Artha, Widya; Hartanto, Adrian; Tumanggor, Raja Oloan
Jurnal SUTASOMA (Science Teknologi Sosial Humaniora) Vol 3 No 1 (2024): Desember 2024
Publisher : Universitas Tabanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58878/sutasoma.v3i1.335

Abstract

The increasing popularity of affordable products has led to high demand among many people, including branded goods, electronic devices and others that are easily purchased through illegal market distributors. Various types of products sold at lower prices, but with “big” brands are common on the black market, but consumers are often unaware of the dangerous consequences of purchasing illegal products. Therefore, it is important to have equal implementation of the law in accordance with the fifth principle of Pancasila. The purpose of this study was to determine the understanding and appreciation of the community, especially from the perspective of Generation Z and the general public, towards justice in the application of laws related to the black market in Indonesia. The research approach used was qualitative descriptive through interviews with 11 participants. The research findings show that the application of justice in law enforcement in Indonesia is still lacking. Most participants gave negative opinions regarding the law enforcement system related to the black market, arguing that law enforcement has not been implemented optimally and is often unfair, especially in relation to major violators who often avoid punishment. This analysis confirms that the application of the law in handling the black market does not fully represent the principle of social justice required by Pancasila.
Sosialisasi Nilai Sila Kelima Pancasila dalam Keadilan Penegakan Hukum Indonesia Pada Siswa SMPN X Jakarta Ramadhani, Kalya Sukma; Shafwah, Salsabila; Lovita, Lovita; Artha, Widya; Hartanto, Adrian; Tumanggor, Raja Oloan
Jurnal Pendidikan Tambusai Vol. 8 No. 3 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pancasila memiliki peran penting sebagai landasan hukum untuk mencapai keadilan sosial di Indonesia serta merupakan dasar negara Indonesia yang mencakup nilai-nilai kesetaraan, kesatuan yang harmonis, dan kemakmuran bagi masyarakat. Pengabdian kepada masyarakat (PKM) ini disosialisasikan kepada siswa-siswi SMPN X Jakarta Barat sebagai bagian dari kegiatan yang dilaksanakan oleh mahasiswa Universitas Tarumanagara. Program ini bertujuan untuk menanamkan pemahaman tentang sila kelima Pancasila, "Keadilan Sosial bagi Seluruh Rakyat Indonesia," dalam konteks penegakan hukum. Metode penelitian yang digunakan dalam kegiatan ini dilakukan melalui beberapa tahap, yaitu tahap persiapan, pelaksanaan, dan evaluasi, yang melibatkan presentasi, diskusi, serta pre-test dan post-test untuk mengukur pemahaman siswa. Hasil analisis menunjukkan adanya peningkatan nilai rata-rata post-test dibanding pre-test, namun perbedaan tersebut tidak signifikan secara statistik. Meskipun demikian, kegiatan ini diharapkan dapat membangun kesadaran siswa terhadap pentingnya nilai-nilai keadilan sosial dan hukum dalam kehidupan sehari-hari.
Cyanide-Degrading Indigenous Aspergillus Spp. Isolated From Kabuto, A Southeast Sulawesi Fermented Food Mamangkey, Jendri; Arfa Yanti, Nur; Ode Adi Parman Rudia, La; Ode Muhamad Iman Sulaiman, La; Aryanti Pada Soa, Christina; Dian Winarty Budadana, Christyani; Hartanto, Adrian
International Journal of Health and Pharmaceutical (IJHP) Vol. 5 No. 4 (2025): November 2025 ( Indonesia - Thailand)
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijhp.v5i4.472

Abstract

Kabuto is a traditional cassava-roots-based food of Munanese which is resulted from natural fermentation. The natural fermentation is conducted by covering all surfaces of cassava roots with fungal colonies. This experiment aims to study the cassava root fermentation by Aspergillus spp. in order to enhance the nutritive value, especially its impact on cyanide level. Both pure samples and replicated samples of cassava roots were fermented by Aspergillus spp. in a solid-state fermentation medium for six days and with a dryness level of ± 28°C. The products were analyzed to know the water content (%), the total amount of protein (mg), and cyanide detoxification (µg.g-1). Isolate K03, K23, K1c, and K31 were positively impeding activities of antimicrobials and hydrolytic enzymes (amylase and cellulase). The isolates, K03, K23, K1c, and K31 positively impeded the growth of Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 35218. Based on the phenotypic characteristics, the isolate K03, K23, dan K1c, had similarity with Aspergillus niger, while isolate K31 had a similar microscopic and macroscopical features of Aspergillus terreus. The water content of Kabuto decreased starting on the fourth day. The isolate K03, K23, K31, and K1C preserved the water content in kabuto at 7.1%, 6.74%, 8.69%, and 7.07% respectively. The highest protein content was observed from the fermentation by Aspergillus terreus K31 (346 mg) and was able to reduce the cyanide concentration until 0.48 µg.g-1. The optimum fermentation in the preparation of kabuto was achieved at sixth day.