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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…
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- xi, 29 hlm.; ilus.; tab.; 29 cm.
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- T1945612026
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…
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- xiii, 124 hlm.; ilus.; tab.; 29 cm.
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- T1945322026
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…
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- xxii, 299 hlm.; ilus.; tab.; 29 cm.
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- T1945452026
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…
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- xv, 149 hlm.; ilus.; tab.; 29 cm.
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- T1942742026
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…
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- xix, 87 hlm.; ilus.; 29 cm
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- T1948552026
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…
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- xviii, 76 hlm.; ilus.; 29 cm
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- T1935912026
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 …
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- xvii, 54 hlm.; ilus.; 29 cm
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- T1935462026
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…
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- xvi, 50 hlm.; ilus.; tab.; 29 cm
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- T1939312026
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…
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- xvii, 221 hlm.; ilus.; tab.; 29 cm.
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- T1943792026
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…
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- xv, 79 hlm.; ilus.; tab.; 29 cm.
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- T1943662026
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…
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- xvi, 50 hlm.; ilus.; tab.; 29 cm
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- T1942222026
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…
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- xv, 79 hlm.; ilus.; tab.; 29 cm.
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- T1941052026
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 …
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- xi, 29 hlm.; ilus.; tab.; 29 cm.
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- T1941062026
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 °…
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- xvi, 158 hlm.; ilus.; tab.; 29 cm.
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- T1941582026
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 …
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- xvii, 131 hlm.; ilus.; tab.; 29 cm.
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- T1941382026
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…
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- xvi, 158 hlm.; ilus.; tab.; 29 cm.
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- T1940012026
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…
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- xvii, 131 hlm.; ilus.; tab.; 29 cm.
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- T1939472026
UJI KINERJA DAN DAYA TAHAN MEMBRANE ELECTRODE ASSEMBLY (MEA) DENGAN KATALIS P…
The use of fossil fuels such as coal, petroleum, and natural gas, which have a negative impact on the environment, has encouraged the development of clean and sustainable renewable energy sources, one of which is hydrogen, which can be used as fuel in fuel cells to generate electrical energy. One type of fuel cell that has been widely developed is the Proton Exchange Membrane Fuel Cell (PEMFC),…
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- xvii, 52 hlm.; ilus.; tab.; 29 cm
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- T1938172026
SINTESIS BENTONIT/ZnO-GO UNTUK ADSORPSI ZAT WARNA METILEN BIRU
Methylene blue is a cationic dye. The reduction of methylene blue dye waste was carried out through an adsorption process. This study was conducted by activating bentonite and synthesizing bentonite/ZnO-GO as an adsorbent to remove methylene blue dye. The composite was synthesized using an ultrasonic method and its performance was evaluated based on variations in pH, concentration, adsorbent ma…
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- xvii, 85 hlm.; ilus.; 29 cm
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- T1905152025
SINTESIS BENTONIT-Fe3O4/GRAPHENE OXIDE UNTUK DEGRADASI ZAT WARNA METILEN BIRU
Methylene blue is a dye widely used in the textile industry due to its high photostability; however, its release into aquatic environments poses significant risks to aquatic organisms and human health. In this study, a Bentonite–Fe₃O₄/Graphene Oxide composite was synthesized for the degradation of methylene blue. The synthesis was carried out using ultrasonic-assisted and co-precipitation…
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- xviii, 94 hlm.; ilus.; 29 cm
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- T1889712025
HIDROLISIS SELULOSA DENGAN KATALIS BIOCHAR TERSULFONASI PADA VARIASI SUHU DAN…
ABSTRACT : Cellulose hydrolysis is the process of breaking down β-1,4 glycosidic bonds into glucose and its derivatives. The cellulose hydrolysis reaction can be accelerated by sulfonated biochar catalysts from oil palm empty fruit bunches (OPEFB) and coconut shells (CS). This study was conducted to determine the effect of temperature and catalytic time variations of sulfonated biochar hydroth…
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- xvii, 53 hlm.; ilus.; 29 cm
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- T1893182025
SINTESIS CaO DARI CANGKANG KERANG HIJAU DAN MODIFIKASI CaO MENGGUNAKAN SODIUM…
Penggunaan kerang hijau yang sangat banyak mengakibatkan limbah cangkang kerang hijau meningkat pesat. Cangkang kerang hijau digunakan sebagai bahan utama sintesis CaO dan modifikasi CaO/SDS. Modifikasi CaO dilakukan perbandingan berat CaO terhadap SDS yaitu (2:1) dan (1:1). Sintesis CaO menggunakan metode ekstraksi dan presipitasi. Adanya penambahan SDS berfungsi sebagai pencegah aglomerasi. H…
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- xv, 32 hlm.; ilus.; 29 cm
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- T1577332024
PENGARUH WAKTU ULTRASONIK DAN TEMPERATUR PEMANASAN TERHADAP KUALITAS OKSIDA G…
Grafena merupakan salah satu bentuk alotrop karbon yang memiliki sifat termal, listrik, katalitik, dan optik yang tinggi sehingga dapat digunakan dalam berbagai bidang. Grafena memiliki turunan berupa oksida grafena (GO) dan oksida grafena tereduksi (rGO). Oksida grafena disintensis menggunakan metode Hummer, serta oksida grafena tereduksi disintensis menggunakan metode reduksi multifase. Pada …
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- xii, 122 hlm.; ilus.; 29 cm
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- T1576902024
SPESIASI ION LOGAM KROM (III) DAN KROM (VI) PADA SEDIMEN DI SUNGAI OGAN MENGG…
Telah dilakukan penelitian spesiasi ion logam krom (III) dan krom (VI) menggunakan metode potensiometri sel konsentrasi. Tujuan penelitian untuk memvalidasi metode dan menentukan distribusi spesies ion logam krom (III) dan krom (VI) dalam sedimen. Metode potensiometri sel konsentrasi memiliki rangkaian alat berupa anoda dan katoda yang terhubung dengan jembatan garam KCl dan elektroda logam Cr.…
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- xv, 42 hlm.; ilus.; 29 cm
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- T1576312024
KONVERSI MINYAK JELANTAH MENJADI BIODIESEL MELALUI REAKSI ESTERIFIKASI DAN TR…
Konversi minyak nabati dapat dilakukan dengan metode elektrolisis sebagai metode alternatif. Tujuan konversi minyak bekas dengan metode elektrolisis untuk memproduksi biodiesel dengan memperhatikan kuat arus dan waktu reaksi. Sampel minyak bekas yang digunakan memiliki nilai asam lemak bebas (ALB) sebesar 0,379%. Reaksi esterifikasi dilakukan sebagai pretreatment sebelum melakukan reaksi transe…
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- xiv, 165 hlm.; ilus.; 29 cm
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- T1576952024
SPESIASI ION LOGAM CR(III) DAN CR(VI) PADA TANAMAN ECENG GONDOK (EICHHORNIA C…
Water hyacinth is a bioindicator plant that has high tolerance to metal pollutans concentration of Cr(III) and Cr(VI) metal ions species in Ogan river. Measurement of Cr(III) and Cr(VI) metal ions species has done using the concentration cell potentiometric method. This study aims to validated the method (linearity, precision, accuracy, LoD & LoQ). Applying the concentration cell potentiometric…
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- xiv, 165 hlm.; ilus.; 29 cm
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- T1576572024
PRODUKSI ENZIM PROTEASE DARI Bacillus licheniformis TS-8 PADA MEDIA TEPUNG BU…
Protease is an enzyme capable of breaking peptide bonds in proteins into peptides and amino acids. Thermophilic bacteria from B. licheniformis are known as one of the microorganisms that produce protease capable of degrading keratin with high activity and under extreme conditions. In this study, protease enzyme production and purification were carried out from Bacillus licheniformis TS-8 isolat…
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- xviii, 78 hlm.; ilus.; tab.; 29 cm
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- T1892982025
SINTESIS KOMPOSIT Fe3O4-SDS SEBAGAI ADSORBEN UNTUK ADSORPSI ZAT WARNA CONGO RED
Congo red dye is widely used in industry, one of them is textile industry. Congo red dye waste if it enters the environment without proper processing will cause environmental pollution. Fe3O4 and Fe3O4-SDS (1:1) composite were used for the adsorption of congo red dye by synthesizing using the coprecipitation method and characterized using XRD, FTIR, VSM and BET. The XRD characterization results…
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- xvii, 76 hlm.; ilus.; 29 cm
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- T1522512024
PENGARUH PERBANDINGAN BERAT SDS TERHADAP KINERJA KOMPOSIT Fe3O4-SDS UNTUK ADS…
The dye that is widely used in the textile industry is congo red dye which is carcinogenic and toxic to many organisms so that processing is needed. Fe3O4-SDS (2:1) and (2:3) composites were used as adsorbents in the adsorption of congo red dye by synthesis using the coprecipitation method and then characterized by XRD, BET, VSM and FTIR. The XRD characterization results of Fe3O4-SDS (2:1) and …
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- x, 73 hlm.; ilus.; 29 cm
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- T1522502024
AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL SABUT KELAPA (Cocos Nucifera Linn) TERHA…
Indonesia has abundant natural resources, especially in agriculture. One of its leading commodities comes from coconut plantations, Coconut is a versatile plant whose entire part can be utilized, including coconut fiber. Coconut fiber contains antibacterial compounds such as tannins, flavonoids, and polyphenols. This study aims to assess the antibacterial activity of ethanol extract of coconut …
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- xix, 72 hlm.; ilus.; tab, 29 cm
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- T1805182025
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