Articles

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  Effect of pH on Brazilin Extraction from Sappanwood (Caesalpinia sappan L.) and Its Impact on the Efficiency of Natural Dye-Sensitized Solar Cells (DSSCs)

  Achmad Naufal Al Hafidl, Nita Kusumawati, Pirim Setiarso, Samik Samik, Maria Monica Sianita...

  378-388

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  10.26554/sti.2026.11.2.378-388

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  Biopotential of Gorontalo Hulu’u Fish (Giuris margaritacea) Albumin in a Novel Spray Gel Formulation for the Treatment of BurnWounds: In Vivo Evaluation in Rats

  Mohamad Aprianto Paneo, Endah Nurrohwinta Djuwarno, Sitty Ainsyah Habibie, Nurain Thomas,...

  389-404

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  10.26554/sti.2026.11.2.389-404

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  Anticancer Efficacy of a Combination of Curcuma longa L. Rhizome and Annona muricata L. Leaf Extracts Against T47D Cells

  Sonia Ardilla Pebriani, Weka Sidha Bhagawan, Muhammad Evy Prastiyanto, Rizal Maarif Rukmana,...

  405-419

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  10.26554/sti.2026.11.2.405-419

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  Valorization of Palm Empty Fruit Bunch-Derived K₂CO₃ Catalyst: Structural Analysis and Application in Biodiesel Production

  Susila Arita, Reno Fitriyanti, Leily Nurul Komariah, Fitri Hadiah

  420-435

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  10.26554/sti.2026.11.2.420-435

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  Microwave-Assisted Cocrystallization of p-Methoxycinnamic Acid with Saccharin and Nicotinamide: Comparative Effects on Solubility and Dissolution

  Abhimata Paramanandana, Kurnia Kawaguchi , Melanny Ika Sulistyowaty, Dwi Setyawan, Marey...

  436-446

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  10.26554/sti.2026.11.2.436-446

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  Sustainable Corrosion Protection of Stainless Steel 316L in Marine Environment Using Electrophoretically Deposited Garlic Extract Green Inhibitor: Electrochemical and Surface Analysis

  IG. Ayu Arwati, Dianta Ginting, Dafit Feriyanto, Gian Villany Golwa, Popi Yuliarty, Kontan...

  447-456

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  10.26554/sti.2026.11.2.447-456

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  Preparation of Polyacrylonitrile-Polyethersulfone Nanofibers Loaded with Reduced Graphene Oxide from Palm Kernel Shell forWastewater Filtration

  Rahma Dani, Muhammad Rama Almafie, Agung Mataram, M. Danny Pratama Lamura, Hamdi Akhsan, Leni...

  457-480

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  10.26554/sti.2026.11.2.457-480

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  Relation Between Randic and Harmonic Energies of Commuting Graph for Dihedral Groups

  Mamika Ujianita Romdhini, Athirah Nawawi

  481-488

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  10.26554/sti.2026.11.2.481-488

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  Heterocyclic Azo Compounds, Synthesis, Characterization, Evaluation as Antimicrobial, and Theoretical Study

  Mohammed K. Mohammed, Afrah A. Al-Jaber, Rafid H. Al-Asadi, Hawraa K. Dhaef

  489-501

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  10.26554/sti.2026.11.2.489-501

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  Optimization of Hydrolyzed Pumpkin (Cucurbita Moschata) Starch as Natural Superdisintegrant in Promethazine HCl Sublingual Tablets

  Lina Winarti, Muhammad Asrofi, Maralodia Almira Lubis, Tirtawati Putri Lestari, Lusia Oktora Ruma...

  502-514

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  10.26554/sti.2026.11.2.502-514

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  Tuning Magnetic Behavior of La₁₋ₓSrₓFeO₃ (x = 0.1–0.5) via Sr Doping: From Antiferromagnetism to Ferromagnetism

  Ramlan, Marzuki Naibaho, Masno Ginting

  515-523

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  10.26554/sti.2026.11.2.515-523

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  Hierarchically Structured Zn-Al LDH/Hydrochar from Rambutan Peel (Nephelium lappaceum L.) for Enhanced Fe(II) Adsorption

  Desti Erviana, Normah Normah, Heroldinho Arieveali, Navinda Ramadhan

  524-537

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  10.26554/sti.2026.11.2.524-537

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  ZnO-SiO₂ Nanocomposite: Synthesis, Characterization, and Application of Corrosion Inhibition

  Alam Q. AL-Hussin, Ali Taleb Bader, Hazim Yahya Al-Gubury

  538-550

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  10.26554/sti.2026.11.2.538-550

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  Prime and Odd Prime Labelings on Cycle-Related Graphs

  Hafif Komarullah, Noor Hidayat, Vira Hari Krisnawati, Kristiana Wijaya

  551-558

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  10.26554/sti.2026.11.2.551-558

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  Enhancing Chitosan-Carboxymethyl Chitosan Composite Film Properties by Silver Nanoparticles Grafting for Acne vulgaris

  Septian Dwi Mulyana, Muh. Agus Syamsur Rijal, Retno Sari

  559-568

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  10.26554/sti.2026.11.2.559-568

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  Spatial Data Science for Regional Pattern Analysis: Dynamic Time Warping-Based Clustering of East Java’s Economic Indicators

  Rahma Fitriani, Eni Sumarminingsih, Herman Cahyo Diartho

  569-578

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  10.26554/sti.2026.11.2.569-578

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  Evaluation of Photocatalytic and Catalytic Activity of Biochar/Nickel for Laboratory Wastewater Treatment

  Is Fatimah, Solekah, Nunung Nurlaela, Zeeshan Ahmad, Indah Tri Rizky, Azlan Kamari, Suresh...

  579-595

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  10.26554/sti.2026.11.2.579-595

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  Large SiO₂ Sizes Influencing Light Scattering Properties in Original White LED Structure

  Pham Hong Cong, Nguyen Thi Phuong Loan, Hsiao-Yi Lee

  596-608

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  10.26554/sti.2026.11.2.596-608

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  Synthesis, In-Vitro Evaluation, and Computational Investigation of Salicylic Hydrazide Derivatives as Potential Tyrosine Kinase–Targeted Anticancer Agents

  Melanny Sulistyowaty, Tri Widiandani, Albertus Aditya Setiawan, Seow Lay Jing, Neny Purwitasari,...

  609-620

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  10.26554/sti.2026.11.2.609-620

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  The Influence of Milling on the Structural and Morphological Properties of Waste-Based Active Carbon from Rubber Seeds Using High Energy Milling (HEM) Method

  Fitri Suryani Arsyad, Aprilianda, Aulia, Akmal Johan, Ihsan Alfikro, Amiruddin Supu, Nur Ahmad,...

  621-631

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  10.26554/sti.2026.11.2.621-631

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  Utilization of Diatom Frustule Waste from Navicula sp. TAD as Photoelectrode Material for Enhancing the Efficiency of Dye-Sensitized Solar Cells (DSSC)

  Ivonne Telussa, Hellna Tehubijuluw, Eka Rahmat Mahayani Anthonia Putera Lilipaly, Dominggus...

  632-642

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  10.26554/sti.2026.11.2.632-642

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  Some Properties of Generalized Token Graphs

  Naelufa Syifna Wifaqotul Muna, Raventino, Rintang Utami, Febby Desy Lia, Muhammad Nurul Huda,...

  643-651

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  10.26554/sti.2026.11.2.643-651

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  Non-Inclusive and Inclusive Distance Irregularity Strength of Complement and Split Graphs

  Tita Khalis Maryati, Fawwaz Fakhrurrozi

  652-660

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  10.26554/sti.2026.11.2.652-660

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  Anticancer Activity of Trisubstituted Pyrazoline Derivatives: Synthesis, Characterisation, and Computational Studies

  Sabah Motrud Mazal, Zainab Al Shuhaib, Raed Awad Alharis, Kawkab Ali Hussein, Sadiq Muhammad...

  661-676

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  10.26554/sti.2026.11.2.661-676

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  Geospatial Intelligence (GEOINT)-Based Cyber Warfare Exposure Index (CWEI) Mapping of Indonesia's Strategic Infrastructure

  Anugrah Adityayuda, Asep Adang Supriyadi, Syachrul Arief

  677-691

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  10.26554/sti.2026.11.2.677-691

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  Design and Formulation of Hydrogel Sponges for Mesenchymal Stem Cell Secretome Delivery

  Deni Noviza, Syahda Permata Ardelia, Marlina

  692-700

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  10.26554/sti.2026.11.2.692-700

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  Block Bootstrap for Spatiotemporal Data in Generalized Space Time Autoregressive (GSTAR)

  Eni Sumarminingsih, Rahma Fitriani, Darmanto, Eka Dani Maulana, Natasha Aulia, Luzar Dwain Ruszardi

  701-731

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  10.26554/sti.2026.11.2.701-731

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  On Vertex-Degree-Based Topological Indices of Cayley Digraphs of Rectangular Groups and Their Role as Molecular Descriptors

  Denpong Pongpipat, Nuttawoot Nupo

  732-741

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  10.26554/sti.2026.11.2.732-741

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  Potency of Leaf Water Extract Karamunting (Rhodomyrtus tomentosa) for Enhancing GLUT4 Translocation in Diabetic Rats

  Irsan Saleh, Vivi Hendra Sutandar, Amrina, Evi Dodik Novita Ningrum, Ernawati Sinaga

  742-749

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  10.26554/sti.2026.11.2.742-749

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  The Relation of Tribinomial Coefficients with Triangular, Catalan and Mersenne Number

  Wamiliana, Desiana Putri, Notiragayu

  750-757

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  10.26554/sti.2026.11.2.750-757

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