Items where Author is "Nizar, Umar Kalmar"

Article

Putra, Ananda and Mahda, Atia and Nizar, Umar Kalmar and Deskiberi, Deskiberi and Amran, Ali (2023) Association Structure and Solubility Dynamic of Methyl Red and Methylene Blue in the System of Water, Sodium Dodecyl Benzene Sulfonate and Pentanol. Journal of Physics: Conference Series, 1876 (2021). pp. 1-8. ISSN Print: 1742-6588 dan Online: 1742-6596

Putra, Ananda and Mahda, Atia and Nizar, Umar Kalmar and Beri, Deski and Amran, Ali (2020) Association structure and solubility dynamic of methyl red and methylene blue in the system of water, sodium dodecyl benzene sulfonate and pentanol. Journal of Physics: Conference Series, 1876 (1). pp. 1-8. ISSN 1742-6596

Rahman, Aulia and Putra, Ananda and Bahrizal, Bahrizal and Sanjaya, Hary and Dewata, Indang and Latisma Dj, Latisma Dj and Sundari, Rita and Nizar, Umar Kalmar (2019) Catalytic Activity of Reused SiO₂–TiO₂ on Biodiesel Production from Waste Cooking Oil in Various Catalyst Loading. International Journal of Research and Review, 6 (8). pp. 86-93. ISSN Print: 2454-2237 dan Online: 2349-9788

Ardan, Syafira and Putra, Ananda and Latisma DJ, Latisma DJ and Sundari, Rita and Etika, Desy and Nizar, Umar Kalmar (2019) The Study of Reused Silica-Titania Catalyst on Biodiesel Production in Various Reaction Times. International Journal of Advances in Scientific Research and Engineering (IJASRE), 5 (8). pp. 133-141. ISSN Online: 2454-8006

Annisa, Fiona Rachma and Dewata, Indang and Sanjaya, Hary and Latisma Dj, Latisma Dj and Putra, Ananda and Sundari, Rita and Nizar, Umar Kalmar (2019) Reusability Test of Silica-Titania Catalyst on Biodiesel Production from Waste Cooking Oil in Various Temperatures. International Journal of Scientific Research and Technology (IJSRST), 6 (4). pp. 116-123. ISSN Print: 2395-6011 dan Online: 2395-602X

Viodelf, Tiara and Ellizar, Ellizar and Andromeda, Andromeda and Nizar, Umar Kalmar and Zulnata, Charles (2019) Improving Students' Critical Thinking Skills Through Buffer Solutions Module Based on Scientific Approaches Assisted Probing Prompting Questions at SMAN 1 Payakumbuh. International Journal of Progressive Sciences and Technologies (IJPSAT), 15 (2). pp. 63-67. ISSN 2509-0119

Farianty, Dhika and Putra, Ananda and Latisma DJ, Latisma DJ and Nizar, Umar Kalmar and Sundari, Rita (2019) Biodiesel Production from Palm and Waste Cooking Oils Catalyzed by Silica-Titania Catalyst with Time Variation. International Journal of Innovative Science and Research Technology, 4 (7). pp. 280-284. ISSN 2456-2165

Raffeza, Tamara Putri and Putra, Ananda and Latisma Dj, Latisma Dj and Oktavia, Budhi and Kurniawati, Desy and Etika, Sri Benti and Sundari, Rita and Nizar, Umar Kalmar (2019) The Effect of Addition of Polyvinyl Alcohol (PVA) on Biodegradable Plastic Based on Bacterial Cellulose from Coconut Water (Cocos Nucifera). International Journal of Progressive Sciences and Technologies (IJPSAT), 15 (2). pp. 152-156. ISSN Online: 2509-0119

Nizar, Umar Kalmar and Putra, Amali and Sundari, Putri Dwi and Latisma, D. J. and Etika, Sri Benti and Bahrizal, Bahrizal and I.indang, Dewata and Nasra, Edi and Sanjaya, Hari and Oktavia, Budi and Wardaningsih, S. K. W. (2019) Synthesis and Characterization of Silica-Titania Catalyst with Solid-State Technique Applying SiO₂ and TiO₂ Solid Precursors Based on Variation Time of Calcination in Biodiesel Production. Journal of Physics: Conference Series, 1185. pp. 1-6. ISSN Online: 1742-6596

Zurryati, Zurryati and Sundari, Rita and Bahrizal, Bahrizal and Putra, Ananda and Latisma Dj, Latisma Dj and Nasra, Edi and Kurniawati, Desy and Nizar, Umar Kalmar The Effect of Silica-Titania Catalyst Loading on the Production of Biodiesel from Palm and Waste Cooking Oil. International Journal of Scientific Research and Engineering Development (IJSRED), 2 (3). pp. 96-101. ISSN Online: 2581-7175

Zurryati, Zurryati and Sundari, Rita and Bahrizal, Bahrizal and Putra, Ananda and Latisma DJ, Latisma DJ and Nasra, Edi and Kurniawati, Desy and Nizar, Umar Kalmar The Effect of Silica-Titania Catalyst Loading on the Production of Biodiesel from Palm and Waste Cooking Oil. International Journal of Scientific Research and Engineering Development (IJSRED), 2 (3). pp. 96-101. ISSN 2581-7175

Nizar, Umar Kalmar and Hidayatul, J. and Sundari, Putri Dwi and B. Bahrizal, B. and Amran, Ali and Putra, Amali and Latisma DJ, DJ and Dewata, Indang The Effect of Titanium Tetrahedral Coordination of Silica- Titania Catalyst on the Physical Properties of Biodiesel. IOP Conference Series: Materials Science and Engineering, 335. pp. 1-8. ISSN Online: 1757-899X

Conference or Workshop Item

Nizar, Umar Kalmar and Sitanggang, Yohanes Manan and Sari, Risma and Sundari, Rita and Bahrizal, Bahrizal and Putra, Ananda and Latisma DJ, Latisma DJ (2018) The Correlation of Biodiesel Physical Properties and Titanium Tetrahedral Coordination in Silica-Titania Prepared by Different Moles Ratio of Titania Precursors. In: International Conference on Chemistry and Engineering in Agroindustry, 25–27 September 2018, Bali, Indonesia.