Issue
Vol. 26 No. 02 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
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EKSAKTA: Berkala Ilmiah Bidang MIPA
April - June 2025
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Kaolinite Nanotubes as Support Catalysts of Sulfuric Acid (H2SO4) for Transesterification Reaction of Waste Cooking Oil into Methyl Ester for Biodiesel
This study aims to improve the catalytic performance of kaolinite by converting it into kaolinite nanotubes and utilizing it as a support for sulfuric acid catalysts. Analysis using XRD and TEM revealed that the...Ernarisa Fitri
,
Rahadian Zainul
,
Syukri
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Study of Indonesian Rhododendron: Classification, Conservation, and Pharmacology Activity
Rhododendrons are representatives of ornamental plants with a wide range of pharmacological activities. Indonesia is the second richest country in Rhododendron plants with 233 species. Unfortunately, more than 85...Damiana Nofita Birhi
,
Meike Tiya Kusuma
,
Antonia Fransiska Laka
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Chemical Components and Antibacterial Activity of Cinnamomum culilaban Extract from Southeast Maluku
The bark of Cinnamomum culilaban , endemic to Southeast Maluku, has the potential as an antibacterial. This study aimed to determine the antibacterial activity of C. culilaban bark extract isolated using...Imanuel Berly Delvis Kapelle
,
Shielda Natalia Joris
,
Fauzan Saleh
,
Nini Munirah Renur
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Distribution of blaCTX-M, blaSHV, blaTEM genes in Extended Spectrum β-Laktamase Producing Klebsiella pneumoniae from Clinical Isolates in Jakarta
Klebsiella pneumoniae is one of the ESKAPE pathogens ( Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa , and Enterobacter spp.) due to their...Yulia Engel
,
Conny Riana Tjampakasari
,
Fithriyah Sjatha
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Histopathology of Gills Fish in Rivers Contaminated by Heavy Metals from Artisanal Gold Mining Waste in Lebong Regency, Bengkulu Province
The aquatic environment is crucial for fish survival because fish require appropriate aquatic environment. Artisanal gold mining generates heavy metal waste in Lebong Regency, polluting the river flows. Heavy metals...Dian Fita Lestari
,
Vestidhia Yunisya Atmaja
,
Santi Nurul Kamilah
,
Eliza Febrianti
,
Farisa Retno
,
Hengki Turnando
,
Ibranio Risditama
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Measurement of C-Organic Content in Sediment as an Indicator of Carbon Absorption Potential in the Bonto Bahari Mangrove Ecosystem, Maros Regency
Mangrove ecosystems play an important role in mitigating global warming through their ability to absorb and store carbon in biomass and sediment. This research analyzes the organic carbon content and carbon...Sari Herawati
,
Nita Rukminasari
,
Budiman Yunus
,
Jamaluddin Fitrah Alam
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Pre-Study on the Development of Internet of Things-Based Prototype Data Logger for Measuring Heat Sufficiency Number
This study aimed to develop an IoT-based data logger prototype to improve data acquisition and monitoring during the sterilization process. Achieving an adequate heat sufficiency value, commonly known as the F0...Daimon Syukri
,
Rini
,
Deden Dermawan Septina
,
Rudi Alfiansyah
,
Aurelia Amaliyah Tarumiyo
,
Yasmin Azzahra
,
Dendi Adi Saputra
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Optimization of Photovoltaic Cells Using Copper-Aluminium Electrodes and Magnesium Sulfate-Based Gel Electrolytes
Photovoltaic cells are devices that can convert sunlight energy into electrical energy by applying the photovoltaic principle. Indonesia is a country located on the equator that receives a lot of sunlight every year....Fitri Yanni
,
Rahadian Zainul
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EKSAKTA: Berkala Ilmiah Bidang MIPA
The Impact of Biofloc on Fish Growth Indicators and Health Risks Assesment from Polyethylene Terephthalate Microplastic Contamination
This study aims to evaluate the effects of biofloc technology on the growth performance of Nile tilapia ( Oreochromis niloticus ) and to assess potential health risks associated with polyethylene terephthalate (PET)...Dian Rizky Afriani
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Deswati
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Rahmiana Zein
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EKSAKTA: Berkala Ilmiah Bidang MIPA
The Effect of Ginger (Zingiber officinale) Extract Addition on The Characteristics of Chayote (Sechium edule (Jacq.) Sw.) Syrup
This study aimed to evaluate the effect of adding ginger ( Zingiber officinale ) extract on the physical, chemical, microbiological, and sensory properties of chayote ( Sechium edule ) syrup, a potential functional...Kharisma Amelia
,
Diana Sylvi
,
Kesuma Sayuti
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