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PENGARUH KONSENTRASI KATALIS KOH, MgO DAN CaO PADA PEMBUATAN BIODIESEL DENGAN PROSES TRANSESTERIFIKASI
Jurnal Inovasi Teknik Kimia
Vol 10
, No 2
(2025)
Biodiesel dapat didefinisikan sebagai ester monoalkil yang dapat dihasilkan dari bahan alami yang terbarukan seperti minyak nabati dan hewani. Bahan bakar ini berpotensi untuk digunakan sebagai bahan bakar alternatif pengganti solar karena sifatnya yang mirip. Selain itu, biodiesel yang berasal dari minyak nabati merupakan bahan bakar terbarukan (renewable), mudah ditangani, tidak menghasilkan polutan berbahaya bagi lingkungan (tidak beracun), mudah terurai secara alami, emisi berbahaya dari pem...
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PENGARUH PENAMBAHAN KATALIS CaO DAN CaO TERIMPREGNASI KOH BERBASIS CANGKANG TELUR TERHADAP HASIL SINTESIS BIODIESEL DARI MINYAK JARAK, MINYAK KELAPA DAN MINYAK KELAPA SAWIT
Muarif , Agam
; Mulyawan , Rizka
; Nurlaila, Rizka
; Fikri, Ahmad
; Armita Sandi, Nazlia
; Cinta Buana Nasution, Vinkhan
; Syahrani, Irma
Jurnal Inovasi Teknik Kimia
Vol 10
, No 2
(2025)
Biodiesel merupakan bahan bakar alternatif yang sifatnya renewable energy dan ramah lingkungan yang dapat disintesis dari beberapa jenis minyak seperti minyak jarak, minyak kelapa, minyak kelapa sawit dan sebagainya. Hal ini didukung oleh kandungan senyawa yang terdapat dalam ketiga jenis minyak tersebut disertai dengan bahan baku yang mudah didapatkan dan dibudidayakan di Indonesia. Proses pembuatan biodiesel dari minyak melalui reaksi esterifikasi dan transesterifikasi dengan menggunakan bantu...
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PENINGKATAN KUALITAS BATUBARA LOW RANK MENGGUNAKAN CAMPURAN MINYAK JELANTAH DAN MINYAK PELUMAS BEKAS MELALUI PROSES UPGRADING BROWN COAL (UBC)
Jurnal Inovasi Teknik Kimia
Vol 10
, No 2
(2025)
Pada saat ini banyak sekali teknologi yang sedang gencar dikembangkan untuk meningkatkan nilai jual dari berbagai macam produk salah satunya teknologi upgrading brown coal yang mana teknologi ini berfungsi untuk menurunkan kandungan air atau moisture dalam batubara sehingga nilai kalori batubara akan meningkat. Pada penelitian ini penurunan kadar air yang berada didalam pori-pori batubara dilakukan dengan pemanasan. Proses pemanasan nantinya akan mengosongkan pori-pori batubara dari kandun...
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Characteristics of Students in Physics Learning: Learning Motivation, Learning Styles, and Learning Experiences at Senior High School in Padang City
Ahzari, Serli
; Nabila, Putri
; Yulianda
; Desnita
; Usmeldi
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
This research aims to analyze the characteristics of students in physics learning, focusing on learning motivation, learning styles, and learning experiences. The research employs a descriptive method with a questionnaire as the instrument, distributed to 54 high school student respondents in Padang City. The data is analyzed quantitatively based on the percentage score for each indicator. The results show that students' learning motivation falls into the good category (73%), the most dominant l...
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ANALYSIS OF FACTORS THAT CREATE PURCHASE DECISIONS AT MYKAN CAFE BEKASI: ANALYSIS OF FACTORS THAT CREATE PURCHASE DECISIONS AT MYKAN CAFE BEKASI
International Journal of Management, Business and Social Sciences
Vol 3
, No 02
(2025)
This study is based on the decline in revenue experienced by Mykan Cafe during 2023 compared to the previous year, which indicates a decline in consumer purchasing decisions. In the context of increasingly competitive culinary business competition, it is important to understand the factors that influence purchasing decisions to formulate an effective marketing strategy. So, this study was conducted to examine the factors that influence purchasing decisions at Mykan Cafe Bekasi. With the determin...
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Project Based Learning Assisted by E-Worksheet Effect on Creative Thinking Ability on Renewable Energy Topic
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The study aims to determine the effect of physics learning using the Project Based Learning (PjBL) model assisted by E-LKPD based on Live Worksheet on the creative thinking ability of grade X students and how much influence physics learning with project-based learning model assisted by E-LKPD based on live worksheet on the creative thinking ability of grade X students. The research was conducted with a quasi-experiment design involving experimental and control classes. The results showed the ave...
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Development of E-Modules Based on Socio-Scientific Issues to Improve The Creative Thinking Skills of High School Students
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The research aims to develop e-modules based on socio-scientific issues that are feasible to use, determine the response of grade X students to the use of e-modules based on socio-scientific issues and determine the increase in creative thinking of grade X students. This development research is based on the 4-D model which includes four steps namely Define, Design, Develop, Disseminate. This research was conducted until the Develop stage due to the limited time of researchers in conducting resea...
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Molecular Identification of Color Variants of Procambarus clarkii Using the COI Gene for Taxonomic Validation
Bhagawati, Dian
; Husein Sastranegara, Muhammad
; Agus Nuryanto
; Anastasia Endang Pulungsari
; Elly Tuti Winarni
; Atang
; Hanan Hassan Alsheikh Mahmoud
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 2
(2025)
This study addresses taxonomic uncertainty surrounding color variants of Procambarus clarkii in aquaculture and conservation contexts. We investigated whether commercially significant color morphs represent distinct subspecies or phenotypic variations of a single species. Using the cytochrome c oxidase subunit I (COI) gene as a molecular marker, we analyzed four color morphs (blue, white, orange, and brown) from aquaculture facilities in Banyumas Regency. DNA extraction, PCR amplification, and s...
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The Effectiveness of Using Smartphone-Based Phyphox in Field Practice Tilt to Improve Students' Creative Thinking Skills
Rusdin, Muhammad Epi
; Prasetyo, Erwin
; Anwar, Zaina
; Pujianti Bejahida Donuata
; Nurfadilah
; Farizi, Zakaria Al
Jurnal Penelitian Pembelajaran Fisika
Vol 16
, No 2
(2025)
The use of technology is a solution to overcome problems in physics learning. This study aims to determine the effectiveness of using Smartphone-based Phyphox in improving students' creative thinking skills. The design used in this research is a nonequivalent pre-test and post-test control group design. This study used a purposive sampling technique to get two groups. The statistical analysis used was independent sample t-test. The results of the analysis showed that there was an effect of using...
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