Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Rudiyansyah Rudiyansyah"'
Publikováno v:
Vitae, Vol 29, Iss 3 (2022)
Background: Pternandra galeata belongs to the family Melastomataceae. It is a native flowering plant in Borneo Island that serve as food for monkey habitat. There has been limited study on the medicinal and chemical properties of this plant. Objectiv
Externí odkaz:
https://doaj.org/article/9f36219bee544ff592b434322b5a4018
Publikováno v:
Journal of Tropical Biodiversity and Biotechnology, Vol 7, Iss 2 (2022)
Isolation of cellulose in empty fruit bunch (EFB) is hindered by lignin content. EFB was pretreated with Pleurotus ostreatus which has the ability to degrade lignin, in various incubation times (0th, 15th,30th, 45th, and 60th). The result showed lign
Externí odkaz:
https://doaj.org/article/be7aa5b3beeb40588b4afd7db29996cb
Publikováno v:
Jurnal Kimia Sains dan Aplikasi, Vol 23, Iss 7, Pp 249-254 (2020)
Modification of silica xerogel with TMCS (trimethylchlorosilane) reagent has been carried out to improve the hydrophobicity of silica xerogel. Silica xerogel was synthesized based on the sol-gel method using sodium silicate as a precursor, and citric
Externí odkaz:
https://doaj.org/article/30ec3fa1c07446d584fff12f17b2fc6c
Publikováno v:
Positron, Vol 9, Iss 2, Pp 69-73 (2019)
Waste glass materials coming from municipal and industrial processes have become a serious problem for the environment in the near future. Silica gels have been long attracting attention since it is widely used for many applications. It had also been
Externí odkaz:
https://doaj.org/article/7bc54dc6dd3e488c9191d530e26e6164
Publikováno v:
Makara Journal of Science, Vol 19, Iss 1, Pp 1-6 (2015)
This study was conducted to investigate the use of TiO2 immobilized on SiO2 (TiO2-SiO2) in a photocatalytic process to degrade toxic industrial waste, phenol, linear alkylbenzene sulfonate (LAS), and Cr(VI), which is dangerous for humans and the envi
Externí odkaz:
https://doaj.org/article/6f614b5f2b9245f6acc228763fdc8576
Publikováno v:
Indonesian Journal of Chemistry, Vol 10, Iss 1, Pp 116-121 (2010)
Searching for secondary metabolites from the wood bark of Durio oxleyanus has afforded two new lignans, namely threo-carolignan Y (1) and erythro-carolignan Y (2) together with three other known lignans erythro-carolignan X (3), boehmenan X (4) and b
Externí odkaz:
https://doaj.org/article/666c1df596d348bb80e6eebe4ece7b2a
Publikováno v:
Journal of Mathematical and Fundamental Sciences, Vol 35, Iss 2 (2013)
Bergenin, a dihydroisocoumarin derivative of glucopyranosyl gallic acid had been isolated for the first time from ethyl acetate extracts of the heartwood and tree bark, together with (-)-α-viniferin from the tree bark of Shorea stenoptera. The str
Externí odkaz:
https://doaj.org/article/ce3733689897410799eb90527cdb90e9
Autor:
Rudiyansyah Rudiyansyah
Publikováno v:
Jurnal Kimia Valensi, Vol 3, Iss 1 (2013)
Pencarian senyawa metabolit sekunder dari ekstrak aseton kayu batang tumbuhan Durio oxleyanus Griff telah menghasilkan senyawa steroid androst-1,4-dien-3,7-dion (1) beserta dua senyawa lignan yaitu boehmenan (2) dan boehmenan X (3) dan fraksidin (4).
Externí odkaz:
https://doaj.org/article/3818ee3f82094e45baef60b8838502e2
Publikováno v:
Equilibrium: Jurnal Pendidikan. 9:215-227
Tujuan dari penelitian ini, untuk mengetahui informasi dasar pendidikan jenjang sekolah dasar dalam mempengaruhi formulasi kebijakan pemerintah daerah pada dinas pendidikan dikabupaten biak numfor. Penelitian ini menggunakan metode deskriptif kualita
Publikováno v:
Equilibrium: Jurnal Pendidikan. 9:86-92
Efektivitas pembelajaran yang berani selama masa pandemi Covid-19 di SMAN 20 Gowa, Kecamatan Pallangga, Kabupaten Gowa. Jurusan Pendidikan Sosiologi Fakultas Keguruan dan Ilmu Pendidikan Universitas Muhammadiyah Makassar. Dibimbing Oleh H. Nurdin dan