Isolation and identification of flavonoida compound from hujan emas leaves (Galphimia speciosa C. E. Anderson) von Sembiring, Helmina Br, Zahara, Annisa

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Qualitative determination of secondary metabolites and antioxidant activity of betel (Piper betle L.) von Lenny, Sovia, Sembiring, Helmina Br

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Isolation of phenolic compounds from Eucalyptus citriodora leaves von Lenny, Sovia, Sembiring, Helmina Br, Sinaga, M. Zulham Efendi

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Waste Passion Fruit Peel as a Heterogeneous Catalyst for Room-Temperature Biodiesel Production von Tarigan, Juliati Br, Singh, Krishanjit, Sinuraya, Jenita S, Supeno, Minto, Sembiring, Helmina, Tarigan, Kerista, Rambe, Siti Masriani, Karo-karo, Justaman A, Sitepu, Eko K

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Fungal contamination spices from Indonesia with emphasis on Aspergillus flavus von Nurtjahja, Kiki, Zuhra, Cut Fatimah, Sembiring, Helmina, Bungsu, Aditiya, Simanullang, Jesica, Silalahi, Juwita Esterina, Gultom, Betriana Novi Lenta, Sartini, Sartini

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Fatty acid methyl ester (FAME) production from sludge solid waste as K2O/SiO2 catalyst von Peranginangin, Sabarmin, Sembiring, Helmina Br, Nainggolan, Yolanda Violetha M., Sihotang, Nopia Sarito, Wijoyo, Hadi

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Material Design of Bimetallic Catalysts on Nanofibers for Highly Efficient Catalytic Reduction of 4‑Nitrophenol von Daniel, Masmur, Indra, Perangin-angin, Sabarmin, Pasaribu, Subur P., Magdaleni, Agustina R., Hestina, Sembiring, Helmina Br, Pasaribu, Albert, Sitinjak, Elvri Melliaty

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Calcium carbonate from chicken eggshells as adsorbents von Sembiring, Helmina Br, Pasaribu, Nurhaida, Sitepu, Josua

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Synthesis of CMC from Palm Midrib Cellulose as Stabilizer and Thickening Agent in Food von Sebayang, Firman, Sembiring, Helmina

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Effect of Different Composition of Polyethylene Oxide‐Polypyrrole (PEO‐PPy) Nanofiber Mats on Antibacterial and Biocompatibility Properties von Masmur, Indra, Perangin‐angin, Sabarmin, Sembiring, Helmina, Tarigan, Afri Haganta, Ginting, Junedi, Barus, Diana Alemin, Ginting, Mimpin

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Facile Method to Synthesize of N-Graphene Nano Sheets von Siburian, Rikson, Ratih, Dewi, Andriayani, Perangin-Angin, Sabarmin, Sembiring, Helmina, Supeno, Minto, Simanjuntak, Cristina, Pratiwi, Sri

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Isolation and Characterization of Flavonoids Isolated from Leaves of Benalu Jeruk (Scurrula fusca G. Don) as Antioxidant von Sembiring, Helmina Br, Barus, Tonel, Marpaung, Lamek, Simanjuntak, Partomuan

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Analysis of Methamphetamine Using Necrophagous Insects For Forensic Entomotoxicology Applications von Nofira, Yendri, Taufik, Muhammad, Sembiring, Helmina Br

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Facile Method to Synthesize N-Graphene Nano Sheets von Siburian, Rikson, Dewiratih, Dewiratih, Andiayani, Andiayani, Perangin-Angin, Sabarmin, Sembiring, Helmina, Sihotang, Herlince, Lumban Raja, Saur, Supeno, Minto, Pasaribu, Nurhaida, Simanjuntak, Cristina, Pratiwi, Sri

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Antioxidant Activity Assay of Eucalyptus pellita Leaf Extract von Lenny, Sovia, Lumbantoruan, Murni Suryani, Sembiring, Helmina Br

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Aktivitas Antibakteri dan Antioksidan Minyak Atsiri Daun Asam Jungga (Citrus jambhiri Lush) von Sembiring, Helmina Br

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AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOIDA DARI DAUN BENALU KAKAO (Dendrophthoe pentandra (L.) Miq.) von Sembiring, Helmina Br, Lenny, Sovia, Marpaung, Lamek

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