Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Ahmad Hafizullah Ritonga"'
Publikováno v:
Pharmaciana, Vol 14, Iss 2, Pp 121-132 (2024)
Sustained-release dosage forms were critical in drug delivery, ensuring controlled and prolonged release for optimal therapeutic outcomes. Chitosan (CH) has become pivotal in sustained-release tablet formulation due to its biocompatibility and muco
Externí odkaz:
https://doaj.org/article/22562213fefa41089c4c95a29373a6ec
Autor:
Ahmad Hafizullah Ritonga, Barita Aritonang, Gusliani Eka Putri, Khairiah Khairiah, Enzo Wiranta Battra Siahaan, Debi Meilani
Publikováno v:
Indonesian Journal of Chemistry, Vol 23, Iss 6, Pp 1694-1703 (2023)
A plastic composite consisting of polylactic acid (PLA), linear low-density polyethylene (LLDPE), oleic acid-grafted linear low-density polyethylene (LLDPE-g-OA) compatibilizer, and organo-precipitated calcium carbonate (O-PCC) have been successfully
Externí odkaz:
https://doaj.org/article/6265e2be4b7c46c7aa340504a17b5ff0
Autor:
Gusliani Eka Putri, Syukri Arief, Ahmad Hafizullah Ritonga, Wiya Elsa Fitri, Eliza Arman, Arniat Christian Telaumbanu, Rahmi Novita Yusuf
Publikováno v:
Indonesian Journal of Chemistry, Vol 23, Iss 6, Pp 1525-1534 (2023)
The approach to the synthesis of cerium oxide nanoparticles (CeO2NPs) using plants as capping agents has been widely researched because of its eco-friendly, low-cost, simple, effective, and reusability. In this research, we used Moringa oleifera leaf
Externí odkaz:
https://doaj.org/article/67f578cea98e46f69d4cbc0c949eba0d
Autor:
Rudi Kartika, Ahmad Hafizullah Ritonga, Lilik Sulastri, Siti Nurliana, Deddy Irawan, Partomuan Simanjuntak
Publikováno v:
International Journal of Technology, Vol 14, Iss 4, Pp 791-799 (2023)
Scenedesmus sp. is a freshwater green alga that functions as an ionic biosorbent and can also be a bioindicator for water contaminated with hexavalent chromium Cr(VI) ion. This study aimed to observe the growth of Scenedesmus sp. exposed to Cr(VI)
Externí odkaz:
https://doaj.org/article/3d4efe3c754944eabcdef9d78c6f13af
Autor:
Boy Isfa, Novesar Jamarun, Emriadi, Syukri Arief, Ahmad Hafizullah Ritonga, Denny Akbar Tanjung, Vivi Sisca
Publikováno v:
International Journal of Technology, Vol 14, Iss 2, Pp 320-329 (2023)
This study investigates the characteristics of TiO2/ZnO nanoparticles and the application of TiO2/ZnO in matt-type water-based paint as a pigment. This study aims to determine the quality of TiO2-ZnO pigments in water-based paints in terms of whi
Externí odkaz:
https://doaj.org/article/db89faff65e346058ea33fecdd117107
Autor:
Denny Akbar Tanjung, Novesar Jamarun, Syukri Arief, Hermansyah Aziz, Boy Isfa, Ahmad Hafizullah Ritonga, Vivi Sisca
Publikováno v:
International Journal of Technology, Vol 14, Iss 1, Pp 173-184 (2023)
The purpose of this study was to improve the mechanical and physical properties, degradation performance, and water absorption of a thermoplastic mixture of sago starch with the addition of Linear Low-Density Polyethylene (LLDPE). The method used
Externí odkaz:
https://doaj.org/article/77b1d0c3a40b4bbd8ba1576fc08c39ec
Autor:
Ahmad Hafizullah Ritonga, Novesar Jamarun, Syukri Arief, Hermansyah Aziz, Denny Akbar Tanjung, Boy Isfa
Publikováno v:
International Journal of Technology, Vol 14, Iss 1, Pp 162-172 (2023)
In this paper, we report that the compatibility of polymer blends between linear low-density polyethylene (LLDPE) and cyclic natural rubber (CNR) can be increased by the addition of oleic acid-grafted linear low-density polyethylene. The research
Externí odkaz:
https://doaj.org/article/b87f00ea27964acf9860964630effb32
Autor:
Ahmad Hafizullah Ritonga, Novesar Jamarun, Syukri Arief, Hermansyah Aziz, Denny Akbar Tanjung, Boy Isfa, Vivi Sisca, Hendri Faisal
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 2326-2332 (2022)
This study reports that Precipitated Calcium Carbonate (PCC) nanoparticles from limestone can be modified with oleic acid (OA), which was applied to LLDPE/CNR blends in the presence of the LLDPE-g-OA coupling agent. This study investigates PCC charac
Externí odkaz:
https://doaj.org/article/0241b9d124824f2db6c5915d0d1c8a64
Autor:
Denny Akbar Tanjung, Novesar Jamarun, Syukri Arief, Hermansyah Aziz, Ahmad Hafizullah Ritonga, Boy isfa
Publikováno v:
Indonesian Journal of Chemistry, Vol 22, Iss 1, Pp 171-178 (2022)
The addition of LLDPE-g-MA into the compound of sago starch/LLDPE was studied to improve its mechanical, morphology, degradation performance, and water absorption properties. Thermoplastic Sago Starch was composed of a mixture of sago starch and glyc
Externí odkaz:
https://doaj.org/article/8e87256bde364f119dd1656dfca4ebbd
Autor:
Ahmad Hafizullah Ritonga, Novesar Jamarun, Syukri Arief, Hermansyah Aziz, Denny Akbar Tanjung, Boy Isfa
Publikováno v:
Indonesian Journal of Chemistry, Vol 22, Iss 1, Pp 233-241 (2021)
This study investigates the improvement of the mechanical, thermal, and morphological properties of linear low-density polyethylene (LLDPE)/cyclic natural rubber (CNR) after the addition of organo-precipitated calcium carbonate (O-PCC). The impact on
Externí odkaz:
https://doaj.org/article/0fe9d80ef36c448fac57fa77d3b66b2c