Published: May 10, 2023

Research Articles

Formation Reaction of 17α(chlorovinyl-3-methyl-butene)estradiol Through the Addition Reaction of a Terminal Alkyne to Ethinylestradiol With a ZnCl2 Catalyst

The addition reaction of terminal alkynes of 17α-ethinylestradiol with ZnCl2 and HCl catalyst mediated by dichloromethane

10.20885/EKSAKTA.vol4.iss2.art1
Omega Siwu (1), Rymond J. Rumampuk (2), Budi Oktavia (3), Emma J. Pongoh (4), Soenandar M.T Tengker (5), Vlagia I Paat (6)
(1) Chemistry Department, Mathematics, Natural Science and earth sciences Faculty, Manado State University, Tondano 95618, Indonesia ,
(2) Chemistry Department, Mathematics, Natural Science and earth sciences Faculty, Manado State University, Tondano 95618, Indonesia ,
(3) Chemistry Department, Mathematics and Natural Science Faculty, Padang State University, Padang, Indonesia ,
(4) Chemistry Department, Mathematics, Natural Science and earth sciences Faculty, Manado State University, ,
(5) Chemistry Department, Mathematics, Natural Science and earth sciences Faculty, Manado State University, Tondano 95618, Indonesia ,
(6) Chemistry Department, Mathematics, Natural Science and earth sciences Faculty, Manado State University, Tondano 95618, Indonesia
1-7
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155

Analysis of the Character of the Insured by Policy Holders of Private Insurance Companies in Indonesia with the Rough Set Method

10.20885/EKSAKTA.vol4.iss2.art2
Ameilea Chealsea Ekaputrie (1), Achmad Fauzan (2)
(1) Statistics Department, Faculty of Mathematics and Natural Sciences Universitas Islam Indonesia ,
(2) Statistics Department, Faculty of Mathematics and Natural Sciences Universitas Islam Indonesia
8-14
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167

Comparison Of Artificial Neural Network Backpropagation and Garch Methods In Predicting Stock Price (Case Study: Indosat Shares 2012 – 2022)

10.20885/EKSAKTA.vol4.iss2.art3
Maktisen Ena (1)
(1) Faculty of Mathematics and Natural Sciences, University of Tribuana Kalabahi
15-29
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53

The Implemetation of Queue Theory and Monte Carlo Simulation on the Number of Covid-19 Patients in Batam

10.20885/EKSAKTA.vol4.iss2.art4
Dwi Septiandini Putri (1), Muhammad Hasan Sidiq Kurniawan (2)
(1) Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia ,
(2) Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia
30-39
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35

Predicting the Number of Train Passengers in Java Island using SARIMA Model

10.20885/EKSAKTA.vol4.iss2.art5
Luluk Muthoharoh (1), Dimas Wahyu Saputro (2), Dhea Sukma Agustiana (3), Fadia Dilla Sabine (4), Lis Nuraini (5), Rekzi P. Manullang (6), Taj Shavira (7), Mika Alvionita (8)
(1) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(2) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(3) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(4) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(5) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(6) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(7) Data Science Study Program, Science Department, Sumatra Institute of Technology ,
(8) Data Science Study Program, Science Department, Sumatra Institute of Technology
40-48
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63

Risk Potency of Lead Exposure to Decrease Cognitive Ability of Productive Age Community in Indonesia Emas 2045

10.20885/EKSAKTA.vol4.iss2.art6
Rika Wijiyanti (1)
(1) Medical Intelligence Postgraduate Program, Sekolah Tinggi Intelijen Negara (State Intelligence College), Sumur Batu, Babakan Madang, Bogor District, West Java 16810, Indonesia
49-55
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36