Zobrazeno 1 - 10
of 1 573
pro vyhledávání: '"Widayat"'
Autor:
Purwono Purwono, Hadiyanto Hadiyanto, Marcelinus Christwardana, Widayat Widayat, Mochamad Arief Budihardjo
Publikováno v:
Jurnal Presipitasi, Vol 21, Iss 1, Pp 80-89 (2024)
Hydrogen gas is considered a pollution-free fuel in the future. However, the EC process using these non-sacrificial electrodes requires further research especially for the production of dissolved hydrogen gas and the efficiency of microalgae harvesti
Externí odkaz:
https://doaj.org/article/ae3ad1dd61304c46a177300957f4f876
Publikováno v:
Science and Technology Indonesia, Vol 9, Iss 2, Pp 359-370 (2024)
Kaolin is a natural ingredient that is in abundance and has not been widely used. Kaolin is a source of silica (SiO2) and alumina (Al2O3) so that it can be used as a heterogeneous catalyst in biodiesel production. This research aims to examine the in
Externí odkaz:
https://doaj.org/article/2c72a01790a24f31ab6844fbdc7f8968
Autor:
Widayat, Hantoro Satriadi, Prambudi Widi Setyojati, Dimas Shihab, Luqman Buchori, Hadiyanto Hadiyanto, Faustina Alda Nurushofa
Publikováno v:
Results in Engineering, Vol 22, Iss , Pp 102202- (2024)
Biodiesel is a promising renewable fuel with lower emissions and environmental friendly. This research investigated the potential of a CaO/MgO/Fe3O4 nanomagnetic catalyst synthesized from dolomite and iron sand for biodiesel production from waste coo
Externí odkaz:
https://doaj.org/article/a9a5bc9c380749baa0f1c4bc391f3a39
Publikováno v:
Banks and Bank Systems, Vol 18, Iss 3, Pp 1-13 (2023)
The Quick Response (QR) code payment is a relatively new means of payment in Indonesia. Even though this strategy offers a great deal of use, not many people are familiar with it or use it. In this regard, it is fascinating to look at what makes peop
Externí odkaz:
https://doaj.org/article/164b33010149472f9cf6ce79e46574e3
Autor:
Widayat Widayat, Nadia Taradissa Maheswari, Wahyu Fitriani, Luqman Buchori, Hantoro Satriadi, K Kusmiyati, Norzita Ngadi
Publikováno v:
International Journal of Renewable Energy Development, Vol 12, Iss 3, Pp 541-549 (2023)
Energy demand will increase along with the increase in population. The current energy demand is dominated by non-renewable energy as it could reduce dependence on fossil energy sources; hence, it is imperative to be developed. Biodiesel with waste co
Externí odkaz:
https://doaj.org/article/6917b131e9b549b180c83f7d08d75d1d
Publikováno v:
Innovative Marketing, Vol 19, Iss 2, Pp 129-142 (2023)
Korean cosmetics have become a favorite product in the Indonesian market. Therefore, it is essential to understand what stimulates Indonesian consumers to buy Korean beauty products. This study aims to examine the structural model of the determinants
Externí odkaz:
https://doaj.org/article/3ddea130c99f42fba1089abdf3a7dcaf
Publikováno v:
International Journal of Renewable Energy Development, Vol 12, Iss 2, Pp 381-389 (2023)
Synthesis of the solid bifunctional vanadium-calcium mixed oxides catalyst was accomplished by application of a simple physical mixing approach. In this work, we compared the catalytic activity of CaO and 2%V2O5.CaO catalyst. Various characterization
Externí odkaz:
https://doaj.org/article/4f133dd6d5dd4720bd9f33e49384d79d
Autor:
John Philia, Widayat Widayat, Sulardjaka Sulardjaka, Gunawan Agung Nugroho, Ahmad Nawwar Darydzaki
Publikováno v:
Results in Engineering, Vol 19, Iss , Pp 101247- (2023)
In this work, aluminum-based activated zeolite is employed for the first time in glycerol steam reforming. AlCl3 and Al(OH)3 were used as the activator agents for the natural zeolite. NiMo/Zeolite catalysts were prepared for the glycerol steam reform
Externí odkaz:
https://doaj.org/article/fd0fdaeedeb8460b9d9f3a608679fd78
Autor:
Triani Meiri, Nurfanani Ach., Aditya Indra Ardhanayudha, Widayat Widayat, Susanty Aries, Kristianingsih Intan, Hasibuan Pramudita Sidik, Dalanta Febio, Silviana S.
Publikováno v:
E3S Web of Conferences, Vol 519, p 02012 (2024)
The utilization of biomass residue for energy production holds significant importance within the context of sustainable energy initiatives in Indonesia, aligning with the guidelines set forth in Government Regulation No. 79 of 2014 on national energy
Externí odkaz:
https://doaj.org/article/ae0d9520a9c64ba793d8e1b1b9718df6
Autor:
Bagus Hario Setiadji, M Agung Wibowo, Henk M Jonkers, Marc Ottele, Widayat, Mochammad Qomaruddin, Felix Hariyanto Sugianto, Purwanto, Han Ay Lie
Publikováno v:
International Journal of Technology, Vol 13, Iss 4, Pp 751-763 (2022)
Asphalt pavement consists of aggregates resulting in a waste material at end of its life. The aggregates can be reused as basic material for asphalt or cementitious binding agents. In both scenarios, the recycled aggregates should provide a good b
Externí odkaz:
https://doaj.org/article/0ddca40082fb4662926d0762c5f0873b