Issue
Vol. 19 No. 2 (2018): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
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EKSAKTA: Berkala Ilmiah Bidang MIPA
October 2018
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Modeling of Human Development Index Using Ridge Regression Method
This article aims to model factors affecting HDI (Human Development Index) in North Sumatera by 2015 using ridge regression method. This ridge regression method is used because in the IPM data there is a...Ferra Yanuar
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Mardha Tillah
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Dodi Devianto
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Analysis of Nepenthes Hybrids in Bukik Taratak West Sumatra by RAPD Technique
The Study about Analysis of Nepenthes Hybrids in Taratak Hill, Pesisir Selatan Sumatera Barat by RAPD Technique had been conducted from May until November 2011. The study was done to prove natural hybrids of...Weni Enjelina
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Mansyurdin Mansyurdin
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Tesri Meideliza
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Analysis Cracking Corrosion on Carbon Steel Pipes API 5L-X65 In Solution 7700 ml Aquades, 250 ml Acetic Acid and 50 ml Ammonia with Gas CO2 and H2S in Saturation Condition
The oil and gas industry exploration that will generally be followed by corrosive substances including sweet gas (eg H 2 S and CO 2 ), it will result in corrosion event. The corrosion stress cracking will cause the...Nendi Suhendi Syafei
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Darmawan Hidayat
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Emilliano Emilliano
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Liu Kin Men
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Mitigation of Land Movement using Self Potential Method in Ling-Anjung Region Sumedang Regency
Land movement occurs due to reduced soil strength which is affected by water pressure. The Self Potential (SP) method is a geoelectric method that can detect well the flow of groundwater. The Self Potential method...Budy Santoso
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Setianto Setianto
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M U Hasanah
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B Wijatmoko
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E Supriyana
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H Mohammad
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Preliminary Phytochemical Screening (Qualitative Analysis) of Cacao Leaves (Theobroma cacao L.)
One of the important processes of cocoa plants growing is pruning. It aims to eliminate sick, broken, or the appearance of water buds disturbing the cacao production. The period of pruning is varios. The various...Hesty Parbuntari
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Yona Prestica
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Rizki Gunawan
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Meri Novia Nurman
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Fransiska Adella
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Factor Analysis of Physics Chemistry Waters that Affects Damage Safety Cliff on the Outskirts of River Siak
This research to identify the physics chemistry vegetation of water on the outskirts of the Siak in terms of quality of the siak river good chemically, physics and biology and the erosion on a cliff the siak good use...Marta Dinata
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Fitridawati Soehardi
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Analysis of Heavy Metals Distribution in the River Town of Hamasaki's Rod Padangsidimpuan
Systems of waste management in Padangsidimpuan City is an open dumping system. The location of the Padangsidimpuan City landfill is carried out at the Batu Bola TPA located in Batu Bola Village which is 120 meters...Fatma Suryani Harahap
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Laila Tussifah Lubis
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Some Operations on Mixed Monotone Operator in Banach Spaces
This paper discusses some operations on mixed monotone operator in Banach space, especially addition an multiplication operations. We will prove the sum and product of two mixed monotone operators. The proof using...Badrulfalah Badrulfalah
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I Irianingsih
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Khafsah Joebaedi
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EKSAKTA: Berkala Ilmiah Bidang MIPA
First Order Space Time Autoregressive Stationary Model on Petroleum Data
First order Space-Time Autoregressive model is one of the models which involves location and time. STAR(1;1) model stationary can be used to forecast future observation at a location based on one previous time of its...Khafsah Joebaedi
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K Parmikanti
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Badrulfalah Badrulfalah
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EKSAKTA: Berkala Ilmiah Bidang MIPA
Fenthion Compound Degradation in the Pesticide Bayleton 500 ec in Sonolysis, Ozonolysis and Sonozolysis with Addition of TiO2-anatase
Fenthion an active compound contained in EC 500 lebaycid pesticides that are toxic. To reduce the level of toxicity will be degradation in sonolysis, ozonolysis and sonozolysis with the addition of TiO2-anatase....Sofyanita Sofyanita
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Zona Octaria
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EKSAKTA: Berkala Ilmiah Bidang MIPA
The Response of Jabon Seeds Germination (Anthocephalus cadamba (Roxb.)Miq.) against the Duration of Combustion and Illumination
The purpose of this research is to know the response of jabon seeds germination against combustion and ilumination. The design that is used is RAL with 2 factors in it. The first is from the duration of combustion...Vauzia Vauzia
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Eliza Gusmira
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