Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Yulfi Zetra"'
Autor:
Yulfi Zetra, Rafwan Year Perry Burhan, Sulistiyono Sulistiyono, Arizal Firmansyah, Darin Salsabila
Publikováno v:
Indonesian Journal of Chemistry, Vol 23, Iss 6, Pp 1567-1583 (2023)
A study of the sedimentary rocks of the Ngrayong formation has been carried out on five samples from the Polaman outcrop point to determine the potential of coal as a source rock for producing oil and gas through GC-MS analysis. Biomarker analysis sh
Externí odkaz:
https://doaj.org/article/c55c48f2981e4eb088626d9ef0cd091c
Autor:
Yulfi Zetra, Anis Febriati, Dyah Nirmala, Rafwan Year Perry Burhan, Arizal Firmansyah, Zjahra Vianita Nugraheni
Publikováno v:
Indonesian Journal of Chemistry, Vol 22, Iss 6, Pp 1574-1585 (2022)
Liquefaction of low-rank coal has been done to optimize the utilization of low-rank coal, which is less economical for obtaining alternative fuel oil. Coal samples were taken from the Bukit Pinang coal mine, Samarinda Ulu, East Kalimantan. Coal was l
Externí odkaz:
https://doaj.org/article/e5d245ecdd20483d95552a2e1e1d7554
Publikováno v:
Indonesian Journal of Chemistry, Vol 22, Iss 3, Pp 845-856 (2022)
The present work aims to study the synthesis of 2-hydroxyethyl esters from castor oil and its lubrication properties, promising as a lubrication bio-additive in low sulfur diesel fuel. This compound has been successfully synthesized from castor oil a
Externí odkaz:
https://doaj.org/article/3072214b17964f83ac420287df053c1d
Publikováno v:
Automotive Experiences, Vol 4, Iss 2 (2021)
Desulphurization of diesel fuel is necessary to be done to reduce sulphur content in the air. However, the desulphurization process will reduce the lubrication properties of diesel fuel. In order to overcome the problem, it needs bioadditive to impro
Externí odkaz:
https://doaj.org/article/86f7a1f62e5b4de98a694fa570b100f9
Publikováno v:
Automotive Experiences, Vol 4, Iss 1 (2021)
The desulphurization process of diesel fuel is carried out to reduce the amount of SO2 emissions that can cause acid rain. However, the desulphurization process in diesel fuel not only removes the sulfur compounds but polyaromatic and polar compounds
Externí odkaz:
https://doaj.org/article/29c00b401a57424fb12254ad921272a1
Publikováno v:
Indonesian Journal on Geoscience, Vol 5, Iss 2, Pp 107-116 (2018)
DOI: 10.17014/ijog.5.2.107-116The Middle to Late Miocene brown coal extracted from Inul area, Sangatta coal mines, East Kalimantan, was studied to recognize the distribution of ketone and acid biomarkers. Samples were extracted using soxhlet method a
Externí odkaz:
https://doaj.org/article/70ca73331f7c4f8092028919fab29265
Autor:
Endah Mutiara Marhaeni Putri, R.Y. Perry Burhan, Yulfi Zetra, Muhammad Nadjib Mujahid, Triyanda Gunawan, Zjahra Vianita Nugraheni
Publikováno v:
SEWAGATI. 6:1-9
Potensi perikanan di Indonesia sangat besar. Pemanfaat total produk disektor perikanan di Indonesia sebagaian besar dikonsumsi dalam bentuk ikan. Untuk meningkatkan nilai ekonomi dari pengolahan ikan, olahan modern seperti Nugget ikan sangat potensia
Publikováno v:
Automotive Experiences, Vol 4, Iss 1 (2021)
The desulphurization process of diesel fuel is carried out to reduce the amount of SO2 emissions that can cause acid rain. However, the desulphurization process in diesel fuel not only removes the sulfur compounds but polyaromatic and polar compounds
Publikováno v:
SSRN Electronic Journal.
Autor:
Endah Mutiara Marhaeni Putri, Wahyu Prasetyo Utomo, Zein Firdaus Ramadhan, R.Y. Perry Burhan, M. Rachimoellah, Fahimah Martak, Agus Wahyudi, Yulfi Zetra, M. Nadjib Mujahid, Zjahra Vianita Nugraheni
Publikováno v:
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat. 2:44-54