SINTESIS, KARAKTERISASI, DAN VALIDASI SENYAWA BASA SCHIFF BENZALDEHIDA-2,4-DI…

This study aimed to synthesize and evaluate a Schiff base compound, benzaldehyde-2,4-dinitrophenylhydrazone (BDPH), as a colorimetric sensor for carbonate anions. The compound was obtained through a condensation reaction with a yield of 91.86%. FT-IR characterization indicated the presence of an imine (C=N) group at 1618 cm-1, XRD analysis revealed a crystalline nature, and the ¹H-NMR (δ 8,70…

PEMODELAN REGRESI LOGISTIK ORDINAL TINGKAT KEPUASAN PENGUNJUNG UPT PERPUSTAKA…

Kualitas layanan merupakan salah satu faktor penting dalam menentukan tingkat kepuasan pengguna jasa. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang memengaruhi kepuasan pengunjung UPT Perpustakaan Universitas Sriwijaya dengan menggunakan metode regresi logistik ordinal. Data penelitian yang digunakan adalah data primer yang diperoleh melalui kuesioner dengan menggunakan teknik ac…

UJI KUALITAS DAN KARAKTERISTIK SABUN MINYAK JELANTAH DENGAN VARIASI PERSENTAS…

ABSTRACT: This study examines the quality and characteristics of solid soap made from used cooking oil with varying percentages of water. The objective of this study is to determine the best quality soap based on water variation and to test the physical characteristics of soap from four oil samples with four variations in water percentage. Before the saponification process, the peroxide value o…

PENGARUH VARIASI KONSENTRASI ASAM SULFAT DAN BERAT PEREKAT BONGGOL PISANG TER…

The increasing demand for energy, which is not proportional to the availability of fossil fuels, has encouraged the development of renewable and environmentally friendly alternative energy sources, one of which is the utilization of biomass waste into biobriquettes. Peanut shell waste (Arachis hypogaea L.) has potential as a raw material due to its high cellulose content; however, the quality o…

PENGEMBANGAN MEDIA FLASHCARD PADA MATERI STRUKTUR ATOM DI SMA NEGERI 1 INDRALAYA

Penelitian ini dilatarbelakangi oleh pembelajaran yang masih menggunakan metode ceramah dan media yang berupa buku teks serta papan tulis menyebabkan siswa cenderung pasif dan mengalami kesulitan dalam mengaitkan konsep struktur atom yang masih dianggap sulit dipahami karena bersifat abstrak. Oleh karena itu, diperlukan media pembelajaran yang menarik dan mampu membantu siswa memahami konsep se…

PENGARUH PENGGUNAAN E-LKPD BERBASIS STEM TERHADAP HASIL BELAJAR SISWA PADA MA…

This study aims to determine the effect of using STEM-based e-LKPD on students’ learning outcomes in the Atomic Structure topic at SMA Negeri 19 Palembang. This study employed a quasi-experimental method with a nonequivalent control group design. The research subjects consisted of two classes selected using the random cluster sampling technique, namely class X.2 as the experimental class usin…

POTENSI PENGEMBANGAN DAUN SENDUDUK (Melastoma malabathricum L.) MENJADI SEDIA…

Tea is widely recognized as a functional beverage due to its rich content of bioactive compounds that may provide beneficial health effects, particularly as a source of antioxidants. Recently, the development of herbal teas derived from medicinal plants has gained increasing attention. This study aimed to evaluate the potential of Melastoma malabathricum leaves (senduduk) for development as a h…

AKTIVITAS BIOLOGIS DAN IDENTIFIKASI TENTATIF SENYAWA PADA FRAKSI KOLOM EKSTRA…

ABSTRACT : Increasing antibiotic resistance and oxidative stress in various diseases encourage the search for sources of natural bioactive compounds. Mango ginger (Curcuma amada Roxb.) is a plant from the Zingiberaceae family known to contain secondary metabolites with potential biological activity. This study aims to test the antioxidant and antibacterial activities and tentatively identify co…

PENGENDALIAN DAN PENGAWASAN BAHAN BERBAHAYA DALAM PEMBANGUNAN SEKTOR INDUSTRI…

Edition

-

ISBN/ISSN

979-587-031-9

Collation

viii, 34 hlm. : ilus. ; 23 cm

Series Title

-

Call Number

661 Ali p

NETWORK PHARMACOLOGY DAN MOLECULAR DOCKING EKSTRAK DAUN PELAWAN (Tristaniopsi…

Cases of hypercholesterolemia continue to increase every year and have become one of the major risk factors for cardiovascular disease. Modern antihypercholesterolemic drugs, such as statins, often cause adverse side effects rhabdomyolysis, creating the need for safer therapeutic alternatives. Pelawan leaves (Tristaniopsis merguensis) are a natural ingredient containing various bioactive compou…

PENGEMBANGAN MULTIMEDIA INTERAKTIF PADA MATERI LAJU REAKSI UNTUK MELATIH KEMA…

The demands of 21st-century learning emphasize the strengthening of higher-order thinking skills (HOTS), particularly in abstract chemistry topics such as reaction rates, while interactive learning media capable of optimally training students’ HOTS remain limited. This study aimed to develop interactive multimedia on reaction rate material to enhance the Higher-Order Thinking Skills (HOTS) of…

SINTESIS BIODIESEL DARI CRUDE PALM OIL (CPO) MENGGUNAKAN METODE ELEKTROLISIS …

A global issue that remains a topic of discussion to this day is the energy crisis caused by the dwindling supply of non-renewable energy and environmental pollution. Therefore, every country is starting to look for alternative energy sources that can be used, especially from biological resources, one of which is biodiesel. Biodiesel is a type of fuel derived from renewable resources. An innova…

PREPARASI DAN KARAKTERISASI BIOCHAR TERSULFONASI HASIL KARBONISASI HIDROTERMA…

Prolonged accumulation of biomass waste can trigger anaerobic decomposition and greenhouse gas (GHG) emissions due to its difficult to decompose nature. One alternative utilization of biomass waste is by converting it into value-added products such as biochar through a thermochemical conversion process. This study aims to analyze the effect of temperature and time of hydrothermal carbonization …

AKTIVITAS ANTIOKSIDAN DAN ANTIBAKTERI METABOLIT SEKUNDER DARI RIMPANG LENGKUA…

Red galangal (Alpinia purpurata) is a species of the Zingiberaceae family that has potential as a source of bioactive compounds. The main objectives of this study were to identify secondary metabolites from red galangal rhizomes (A. purpurata) and to determine their antioxidant and antibacterial activities. Red galangal rhizomes were extracted and then separated to obtain fractions. The extract…

PETROGENESIS BASALT FORMASI GARBA BERDASARKAN ANALISIS PETROGRAFI DAN GEOKIMI…

Daerah penelitian berada di Bumi Genap dan sekitarnya, Kabupaten Ogan Komering Ulu Selatan, Sumatera Selatan, yang termasuk dalam Formasi Garba (Kjg). Wilayah ini didominasi oleh batuan beku vulkanik berupa basalt yang belum banyak dikaji terkait petrogenesis dan lingkungan tektoniknya. Penelitian ini bertujuan untuk mengidentifikasi karakteristik petrografi, menentukan afinitas magma melalui a…

PRA RANCANGAN PABRIK PEMBUATAN ASAM SULFAT KAPASITAS 270.000 TON/ TAHUN

Pabrik pembuatan bahan asam sulfat dengan kapasitas 270.000 ton/tahun direncanakan untuk berdiri pada tahun 2028 di Desa Sumber Arum, Kecamatan Kerek, Kabupaten Tuban, Jawa Timur, dengan perkiraan luas area pabrik seluas 5 ha. Proses pembuatan senyawa ini mengacu kepada paten dengan nomor WO2023097389. Bahan baku yang digunakan yaitu flue gas dengan bantuan katalis Vanadium Pentaoksida (V2O5). …

PRA RANCANGAN PABRIK PEMBUATAN BUTIL ASETAT DENGAN PROSES ESTERIFIKASI ASAM A…

Pabrik pembuatan Butil Asetat dengan kapasitas produksi 45.000 ton/tahun direncanakan akan berdiri pada tahun 2032 di kawasan industri JIIPE, Gresik, Jawa Timur dengan luas 2,4347 ha. Butil Asetat pada pabrik ini disintesis dari bahan baku Butanol dan Asam Asetat dengan katalis Amberlyst-15 di dalam fixed bed reactor berdasarkan Patent CN 117843478 A. Reaksi berlangsung pada temperatur 130 oC d…

PREPARASI DAN KARAKTERISASI ELEKTROKATALIS CuO-TiO2/C VULCAN, CuO-TiO2/C BINC…

Urea (CH₄N₂O) is widely used in agriculture, medicine, and industry; however, excessive accumulation can negatively impact the environment and human health. Therefore, a sensor that is fast, accurate, and stable is required. This study evaluates CuO-TiO₂/C electrodes based on Vulcan carbon, Binchotan carbon, and polyaniline (PANI) modification as urea sensors in 0.1 M NaOH. The electrodes…

PREPARASI DAN KARAKTERISASI ELEKTROKATALIS MnO2-TiO2/C DENGAN VARIASI KARBON …

This study aimed to develop and evaluate the performance of MnO₂–TiO₂/C composite electrodes as electrochemical sensors for methanol detection using different carbon materials, namely Vulcan carbon, binchotan carbon, and Vulcan carbon modified with polyaniline (PANI). XRD analysis confirmed the presence of crystalline MnO₂ and TiO₂ phases at 2θ angles of 28.6° and 25.3°, respective…

PRA RANCANGAN PABRIK ETIL ASETAT DENGAN PROSEES DEHIDROGENASI ETANOL KAPASITA…

Pabrik pembuatan etil asetat dengan kapasitas produksi 73.000 ton/tahun direncanakan pembangunannya pada tahun 2032 yang berlokasi di Kabupaten Gresik, Jawa timur seluas 4,833 Ha. Operasi pabrik berjalan selama 24 jam/hari dalam 300 hari/tahun. Komoditi etil asetat yang diproduksi mengacu pada Patent WO No. 2024/081921 A2 yang menggunakan proses dehidrogenasi dan hidrogenasi dengan etanol sebag…

PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS PROBLEM BASED LEARNING PADA …

Penelitian pengembangan ini bertujuan untuk menghasilkan Lembar Kerja Peserta Didik (LKPD) berbasis Problem Based Learning (PBL) pada materi Hidrokarbon yang valid, praktis, dan efektif. Metode penelitian yang digunakan adalah Research and Development (R&D) dengan model 4D (Define, Design, Develop, Disseminate), yang dipadukan dengan model evaluasi Tessmer. Pengumpulan data dilakukan menggunaka…

ANALISIS KETERAMPILAN PROSES SAINS KELOMPOK MAHASISWA PADA PRAKTIKUM KIMIA AN…

Penelitian ini bertujuan untuk menganalisis Keterampilan Proses Sains kelompok mahasiswa pada praktikum kimia anorganik I pada materi Penetapan Kapasitas Penetralan Asam Tablet Antasida Dengan Titrasi Balik. Penelitian ini merupakan penelitian yang menggunakan metode penelitian kualitatif deskriptif, dengan pengambilan sampel dilakukan melalui teknik purposive sampling. Sampel dalam penelitian …

AKTIVITAS ANTIOKSIDAN DAN ANTIBAKTERI SERTA IDENTIFIKASI FRAKSI KROMATOGRAFI …

Temu ireng (Curcuma aeruginosa Roxb.) is a medicinal plant from the Zingiberaceae family that is widespread in South Asia and Southeast Asia and has been reported to have antibacterial, anticancer, and antioxidant activities, especially in the rhizome. However, information on the antioxidant and antibacterial activities of fraction and isolated compounds is still limited. This study aims to ass…

UJI AKTIVITAS ANTIOKSIDAN DAN ANALISIS KANDUNGAN KIMIA DARI FRAKSI AKTIF BATA…

ABSTRACT : Lenglengan (Leucas lavandulifolia) belongs to the Lamiaceae family. L. lavandulifolia is traditionally used in the treatment of headaches, migraines, rheumatism, and diabetes. Information on the activity and chemical content of L. lavandulifolia stems is still limited. The purpose of this study was to determine the antioxidant activity and chemical content of the most active column f…

OPTIMASI DAN KARAKTERISASI PRODUK HYDROCRACKING PIROLISIS TANDAN KOSONG KELAP…

Oil palm empty fruit bunches (EFB) are an abundant lignocellulosic waste in Indonesia with significant potential as a renewable energy source. However, the liquid product obtained from EFB pyrolysis still exhibits drawbacks, including high oxygen content and low stability, thus requiring further upgrading. One effective method to improve the quality of the liquid product is hydrocracking using …

POTENSI PENGEMBANGAN KULIT RAMBUTAN (Nephelium lappaceum L.) MENJADI SEDIAAN …

Rambutan peel (Nephelium lappaceum L.) is an organic waste that has the potential to be used as a source of natural antioxidants due to its high phenolic and flavonoid content. This study aims to determine the total phenolic and flavonoid content, antioxidant activity, and quality characteristics of rambutan peel tea. Rambutan peel samples were dried, ground, and brewed using hot water at 90 °…

UJI AKTIVITAS ANTIOKSIDAN EKSTRAK AIR SIMPLISIA DAUN SUNGKAI (Peronema canesc…

Sungkai leaves (Peronema canescens Jack.) have potential as a raw material for herbal tea and as a natural source of antioxidants. This study aimed to determine the total phenolic and flavonoid contents, antioxidant activity, and quality parameters of sungkai leaf simplicia tea compared with gambir leaf tea, soursop leaf tea, and commercial tea. The samples were dried, ground, and brewed using …

PERBANDINGAN KINERJA MEA PADA PEMFC YANG DIBUAT DENGAN METODE CATALYST COATED…

This study evaluates the performance and durability of Membrane Electrode Assembly (MEA) in Proton Exchange Membrane Fuel Cell (PEMFC) fabricated via Catalyst Coated Substrate (CCS) and Decal Transfer Method (DTM) using Kapton and PTFE substrates. The fabrication technique significantly impacts the catalyst layer structure and electrochemical properties. Characterization through Cyclic Voltamme…

PEMBUATAN KATALIS Ni-Fe/C DENGAN KOMPOSISI BERVARIASI MENGGUNAKAN METODE BALL…

The increasing global energy demand and environmental impacts of fossil fuels have driven the development of clean and sustainable energy sources. Hydrogen is a promising alternative due to its environmentally friendly nature and significant potential in future energy systems. Hydrogen production through water electrolysis using Proton Exchange Membrane Water Electrolysis (PEMWE) is efficient a…

PENGARUH UKURAN BUTIR TERHADAP DISTRIBUSI REE DI PERAIRAN DENIANG DAN SEKITAR…

Penelitian ini bertujuan untuk menganalisis hubungan antara karakteristik ukuran butir sedimen dengan distribusi unsur tanah jarang (Rare Earth Elements/REE) pada sedimen dasar laut di Perairan Deniang, Kabupaten Bangka, Provinsi Kepulauan Bangka Belitung. Data yang digunakan berupa data ukuran butir sedimen dan data geokimia REE hasil analisis ICP-MS yang diperoleh dari Balai Besar Survei dan …