Zobrazeno 1 - 10
of 109
pro vyhledávání: '"ZULFAHMI ZULFAHMI"'
Autor:
Datin Fatia Umar, Zulfahmi Zulfahmi, Liston Setiawan, Gunawan Gunawan, Agus Prakosa, Truman Wijaya, Edwin Akhdiat Daranin
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 39, Iss 4, Pp 125-136 (2024)
The most extensive use of coal in Indonesia is for electricity generation. Due to increasing concerns about climate change and the need to reduce emissions caused by burning coal, biomass-based fuels are becoming more competitive. The biomass carboni
Externí odkaz:
https://doaj.org/article/943f3dbaafe74977a23a3db06f91406f
Autor:
Datin Fatia Umar, Zulfahmi Zulfahmi, Suganal Suganal, Nendaryono Madiutomo, Truman Wijaya, Miftahul Huda, Liston Setiawan, Edwin Akhdiat Daranin, Gunawan Gunawan, Ika Monika
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 39, Iss 1, Pp 1-10 (2024)
Palm kernel shells (PKS) were washed with water and glacial acetic acid (CH3COOH) gradually to prepare them for co-firing with coal. They were then torrefied at 450ºC for one hour. Washing was done to reduce the concentration of ash and alkaline oxi
Externí odkaz:
https://doaj.org/article/df4cfdd16d094d7b8ae4e078169fc708
Autor:
Datin Fatia Umar, Zulfahmi Zulfahmi, Triswan Suseno, Suganal Suganal, Nendaryono Madiutomo, Liston Setiawan, Edwin Akhdiat Daranin, Gunawan Gunawan
Publikováno v:
Heliyon, Vol 9, Iss 11, Pp e22022- (2023)
The hydrothermal dewatering (HTD) process was carried out using 16 coal samples obtained from several regions in Indonesia. This research aims to identify the dominant parameters that influence ash deposition during coal combustion in a boiler or gas
Externí odkaz:
https://doaj.org/article/2d60d5a2c8ac40bebdee310619bf3cf9
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 38, Iss 2, Pp 109-125 (2023)
PT.X, a coal mining company in South Kalimantan, Indonesia, plans to use the highwall mining method to excavate marginal reserves on the final slope to maintain production. However, the stability of the slope and determination of the highwall mining
Externí odkaz:
https://doaj.org/article/dddcff47540642af97f96971bd1816ae
Publikováno v:
Society, Vol 10, Iss 2, Pp 579-590 (2022)
The research aims to determine the use of ICT-based learning models on students’ learning motivation at Darul Falah High School. The object of the research was students of Class X of Darul Falah High School, namely to see whether students’ abilit
Externí odkaz:
https://doaj.org/article/30672d86d25e4c5780ba46e4cf295d92
Autor:
Raden Yudi Pratama, Nana Sulaksana, Emi Sukiyah, Teuku Yan Waliana Muda Iskandarsyah, Franto Novico, Zulfahmi Zulfahmi, Evi Hadrijati Sudjono, Duddy Ranawijaya
Publikováno v:
Journal of Environmental Engineering and Landscape Management, Vol 31, Iss 3 (2023)
The landscape of Java’s north coast is dominated by a mild slope covered by soft sediment, which faces many environmental issues. These issues have been identified, and the simple technique of overlaying Landsat imagery shows the evolution of the l
Externí odkaz:
https://doaj.org/article/33c76e2e08d7454d842ed3e027d3a99f
Autor:
Yusri Dianne Jurnalis, Utari Gustiany Gahayu, Diyas Anugrah, Revi Rilliani, Zulfahmi Zulfahmi, Ricvan Dana Nindrea
Publikováno v:
Sari Pediatri, Vol 23, Iss 4, Pp 255-61 (2021)
Latar belakang. Data nasional menunjukkan proporsi kasus konfirmasi Covid-19 pada usia 0-18 tahun mencapai 12,5% yang artinya 1 dari 8 kasus konfirmasi Covid-19 adalah anak. Data IDAI menunjukkan Case Fatality Rate akibat Covid-19 pada anak mencapai
Externí odkaz:
https://doaj.org/article/ec360f2c11d34337a4ca1fe3f73c297a
Publikováno v:
Chimica Didactica Acta, Vol 9, Iss 1, Pp 8-16 (2021)
This study aims to develop intertextual-based learning strategies using visualization models to improve students' spatial abilities on molecular geometry concepts. In this study using the method of Research and Development (R and D). The research sub
Externí odkaz:
https://doaj.org/article/24d700e12f4f42809e1b02fc161304de
Publikováno v:
International Journal of Islamic Economics and Finance, Vol 4, Iss SI, Pp 121-152 (2021)
Turkey has a long history in Islamic civilisation. However, there is still lack of research to examine participatory banks in Turkey. This is despite the fact that the legacy of strong Islamic law, the majority Muslim population, and the strategic lo
Externí odkaz:
https://doaj.org/article/683281defb4f47f380f932e5266b3c67
Publikováno v:
Jurnal Teknologi & Industri Hasil Pertanian, Vol 25, Iss 2, Pp 62-70 (2020)
This study aimed to identify citronella oil and find its application as safe aromatherapy medicated oil preferred by consumers. Medicated oil was made in 4 formulas with the ratio of menthol crystals, white oil, gandapura oil, citronella oil, pepperm
Externí odkaz:
https://doaj.org/article/b47af39b75a445b58fd2893188654e4f