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Judul Artikel : Mengembangkan Kemampuan Berpikir Kreatif Siswa Melalui Pendekatan Matematika Realistik Tahun 2018
Priatmoko, Angga Putra
;
Karim, Karim
;
Sukmawati, R. Ati
(
EDU-MAT, Jurnal Pendidikan Matematika
,
2018-04
)
The Effectiveness of Implementing Blended-Learning with Cooperative Setting in Numerical Method Subject
Pramita, Mitra
;
Sukmawati, R. Ati
(
International Conference on Wetland and Multidisciplinary Research (ICWRES)
,
2019-11-11
)
MODELING ANALYSIS OF THE EFFECT OF THE MAIN ROLLHOOP LENGTH ON THE STRENGTH OF FORMULA STUDENT CHASSIS
Siswanto, Rudi
;
Subagyo, Rachmat
;
Isworo, Hajar
;
Gapsari, Femiana
(
Eastern-European Journal of Enterprise Technologies
,
2019-08-15
)
Physical and chemical mechanisms of hydrophobicity of nanoparticle membranes (Mg+Al2 O 3 ) Wahyudia , R. Subagyob,*, F. Gapsaric a Department of Mechanical Engineering, Faculty of Engineering,Universitas Muhammadiyah Yogyakarta, Brawijaya street, Kasihan, Bantul, Yogyakarta, 55183, Indonesia b Mechanical Engineering Department, Engineering Faculty, University Lambung Mangkurat, Jenderal Achmad Yani Street KM 35.5, Banjarbaru, South Kalimantan, 70714, Indonesia c Mechanical Engineering Department, Engineering Faculty, University Brawijaya, Veteran street No. 16, Malang, East Java, 65145, Indonesia * Corresponding e-mail address: rachmatsubagyo@ulm.ac.id ABSTRACT Purpose: Investigate the hydrophobic, superhydrophobic and hydrophilic properties of Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles. Design/methodology/approach: This research was conducted by SEM-EDX analysis of Magnesium and Alumina nanoparticles, observation of gas bubbles when droplets of water contact with membrane surfaces, measurement of surface roughness and detection of Hydrogen gas production using Gas Chromatography. There are eleven compositions (Al2 O 3 :Mg) membranes used in this study, namely: (0:100; 10:90; 20:80; 30:70; 40:60; 50:50; 60:40; 70:30; 80:20; 90:10; and 100:0). Findings: Successfully found an alloy membrane between Alumina (Al2 O 3 ) and Magnesium (Mg) nanoparticles in the composition of Mg:Al2 O 3 (0:100%) having Hydrophobic properties; Mg:Al2 O 3 (50:50%) has Superhydrophobic properties and Mg:Al2 O 3 (100:0%) has hydrophilic properties. Three conditions occur when H2 O droplets come in contact with the membrane layer, namely: hydrophobic conditions when the trapped gas pressure is smaller than the droplet pressure. Superhydrophobic conditions when the trapped gas pressure is equal to the droplet pressure. Hydrophilic conditions occur when the trapped gas pressure is greater than the droplet pressure. Research limitations/implications: This research is limited to the hydrophobic nature of Nano Alumina (Al2 O 3 ) and Magnesium (Mg) membrane particles. Practical implications: Superhydrophobic properties are very suitable to be applied to membranes that are useful for destiny. Originality/value: The novelty of this study is to find the right mixture of nanoparticles of Alumina and Magnesium in a composition that is capable of creating hydrophobic, superhydrophobic and hydrophilic properties. Keywords: Hydrophobic, Superhydrophobic, Hydr
Wahyudi
;
Subagyo, Rachmat
;
Gapsari, Femiana
(
Journal of Achievement in Material and Manufacturing Engineering
,
2019-10-02
)
PERTUMBUHAN DAN PRODUKSI HIJAUAN PAKAN ALAMI TERNAK KERBAU RAWA HASIL BUDIDAYA DI LAHAN KERING
Syarifuddin, N. A.
;
Irawan, B.
;
Prana, Y
(
Program Studi Peternakan, Universitas Lambung Mangkurat
,
2015-06-01
)
Kualitas Fisik, Kandungan Protein Kasar dan Serat Kasar Jerami Padi yang Difermentasi dengan Cairan Rumen
Syarifuddin, N. A.
;
Sarfina, M
(
Program Studi Peternakan, Universitas Lambung Mangkurat
,
2014-06-01
)
Assessment of polycyclic aromatic hydrocarbons (PAHs) contamination in surface soil of coal stockpile sites in South Kalimantan, Indonesia
Priatmadi, Bambang Joko
(
2016
)
Characteristics of Acid Mine Water
Priatmadi, Bambang Joko
(
2014
)
Water Plants Characteristic for Phytoremediation of Acid Mine Drainage Passive Treatment
Priatmadi, Bambang Joko
(
2013
)
ANALISIS PERFORMA PRIMARY AIR HEATER (PAH) PLTU ASAM ASAM UNIT I – KALIMANTAN SELATAN
Ghofur, Abdul
(
Rotary Universitas Lambung Mangkurat
,
2019
)
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