Zobrazeno 1 - 10
of 1 320
pro vyhledávání: '"Siahaan P"'
Autor:
Siahaan, Haryanto M.
We construct a novel solution in the low energy limit of heterotic string theory describing accelerating charged and rotating black holes with NUT parameter. Some aspects of the new spacetime are discussed, such as locations of horizons, ergoregions,
Externí odkaz:
http://arxiv.org/abs/2409.14046
Autor:
Siahaan, Haryanto M.
Theories of non-linear electrodynamics inherently describe deviations from Maxwell theory in the strong field regime. Among these, ModMax electrodynamics stands out as a unique one-parameter generalization of Maxwell theory that preserves both confor
Externí odkaz:
http://arxiv.org/abs/2409.13967
Autor:
Siahaan, Haryanto M.
In this study, we investigate the behavior of ModMax-de Sitter black holes when perturbed by massless neutral scalar fields. Specifically, we analyze how the relaxation time, defined as the inverse of the fundamental imaginary frequency, varies with
Externí odkaz:
http://arxiv.org/abs/2409.03359
Autor:
Siahaan, Haryanto M.
We construct a new solution in the Einstein-Maxwell-dilaton theory describing accelerating, charged, and rotating black hole, i.e. the accelerating Kaluza-Klein black hole. Some properties the spacetime are discussed, such as the electromagnetic fiel
Externí odkaz:
http://arxiv.org/abs/2409.02892
Publikováno v:
Open Chemistry, Vol 19, Iss 1, Pp 358-366 (2021)
Curcumin has been known and used in the medical and industrial world. One way to improve its stability, bioavailability and its medical applications is using encapsulation method. In this research, we studied cocoliposome (coconut liposome) as the en
Externí odkaz:
https://doaj.org/article/cf1e244d02b54f6683e0cbc8cda290d6
Publikováno v:
Open Chemistry, Vol 18, Iss 1, Pp 369-376 (2020)
In this study, we successfully coated cetyltrimethylammonium–silica on magnetite. The material produced is used to degrade phenol waste in the waters. The effect of the addition of cetyltrimethylammonium bromide (CTAB) on the ability of phenol a
Externí odkaz:
https://doaj.org/article/25e0708e44ca4ca2a0549550609f25c1
Autor:
Hudiyanti Dwi, Hamidi Noor Ichsan, Anugrah Daru Seto Bagus, Salimah Siti Nur Milatus, Siahaan Parsaoran
Publikováno v:
Open Chemistry, Vol 17, Iss 1, Pp 537-543 (2019)
An experimental and computational study was carried out for encapsulation of vitamin C in sesame, Sesamum indicum L., liposomes. Based on computational studies, the packing parameter (P) of sesame phospholipids was found to be 0.64 ± 0.09. This indi
Externí odkaz:
https://doaj.org/article/953d7d386cee4b71acd7f135807322cc
Autor:
Steven Tandean, Harsan Harsan, Andre Marolop Pangihutan Siahaan, Harley Septian, Alexander Josethang
Publikováno v:
Neurointervention, Vol 19, Iss 3, Pp 185-189 (2024)
A 24-year-old male was admitted with progressive cervical hypesthesia, tetraparesis, dyspnea, and a history of craniofacial fracture. Spinal magnetic resonance imaging (MRI) showed brainstem edema extending to the thoracic spine with multiple promine
Externí odkaz:
https://doaj.org/article/c370687cfd5e454198b5adcdc7c83270
Autor:
Haryanto M. Siahaan
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 10, Pp 1-10 (2024)
Abstract In this paper, we explore the application of Kerr/CFT correspondence to the accelerating Kerr–Taub–NUT spacetime. We demonstrate that the correspondence can be maintained if the near-horizon angular coordinate is appropriately rescaled.
Externí odkaz:
https://doaj.org/article/83968c947d9a495bbc3f06e9634f0d03
Publikováno v:
Jurnal Pendidikan Jasmani dan Olahraga, Vol 9, Iss 2, Pp 161-168 (2024)
Soccer is one of the high intensity activities requiring an intensive training since the regulatory process may increase the oxidative stress in the form of Reactive Oxygen Species (ROS). Free radicals occurring due to the imbalance of endogenous ant
Externí odkaz:
https://doaj.org/article/a485d7eae8d742018230e803dfa84bf4