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KRISTAL CAIR LAMELAR DALAM SISTEM AIR, TETRA ETILEN GLIKOL DODESIL ETER, DAN TEMBAGA NITRAT Ali Amran
Jurnal Riset Kimia Vol. 3 No. 2 (2010): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v3i2.32

Abstract

JRK Vol. 3, No. 2ABSTRACT The lamellar liquid crystal in water, tetraethyleneglycol dodecylether, and copper nitrate system has been investigated. The results which characterized using optical polarizing microscope and small-angle x-ray diffraction showed the stability of the liquid crystal region was 40% and 65% by weight of surfactant. The interlayer spacing of lamellar liquid crystal, with and without various concentrations of copper nitrate content, remained constant. Keywords : Lamellar liquid crystal, Tetraethylene glycol dodecylether, Copper nitrate, Optical polarizing microscope, Small-angle x ray diffraction
PENENTUAN PENETRASI AIR DAN HIDROKARBON DARI KRISTAL CAIR LAMELAR DALAM SISTEM GARAM NITRAT, SIKLOHEKSANE DAN LAURIL ALKOHOL POLI ETER Ali Amran
Jurnal Riset Kimia Vol. 4 No. 1 (2010): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v4i1.38

Abstract

  Abstract Water and hydrocarbon penetrations of the lamellar liquid crystal in nitrate salts (calcium and aluminium nitrates), cyclohexane, and lauryl alcohol polyether (LA4) system have been investigated. Liquid crystal phase which characterized using optical polarizing microscope and small-angle X-ray diffraction, showed  a significantly the water and the hydrocarbon penetrations of aluminium nitrate and calcium nitrate solutions.  Keywords: Lamellar liquid crystal, Optical polarizing microscope, Water and hydrocarbon penetration, Nitrate salts (calcium and aluminium nitrates), Lauryl alcohol polyether (LA4), Small-angle X-ray diffraction.   
SISTEM INFORMASI TES POTENSI AKADEMIK BERBASIS WEBSITE PADA UNIVERSITAS MUSI RAWAS ali amran
Jurnal Teknologi Informasi Mura Vol 10 No 2 (2018): Jurnal Teknologi Informasi Mura DESEMBER
Publisher : LPPM UNIVERSITAS BINA INSAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.951 KB) | DOI: 10.32767/jti.v10i2.391

Abstract

AbstrakPendidikan merupakan usaha yang harus dilaksanakan secara teratur dan berencana untuk menyiapkan peserta didik melalui berbagai kegiatan baik berupa bimbingan, pengajaran maupun tes akademik. Kegiatan tes akademik misalnya akan berjalan dengan lancar dan mencapai tujuan dengan maksimal apabila didukung dengan sarana prasarana.Pada Universitas Musirawas, kurangnya teknologi informasi yang digunakan menjadikan semua pengerjaan dilakukan secara tertulis. Dimana dalam proses tes akademik bagi siwa yang baru masuk masih dilakukan dengen cara manual.Universitas Musirawas juga telah menerapkan sebuah tes potensi akademik yang bertujuan untuk mengetahui bakat dan kemampuan serta standar lulus tidaknya bagi calon mahasiswa baru.Secara umum sistem tes akademik pada UNMURA sudah memenuhi standar pendidikan, hanya saja masih terdapat beberapa kelemahan dan dalam pengolahannya masih belum terkomputerisasi, sehingga perlu dilakukan pengembangan lebih lanjut untuk dapat mengatasi kekurangan-kekurangan tersebut. Kata Kunci    : Sistem Informasi, Tes Potensi Akademik, Website AbstractEducation is a project that must be carried out routinely and integratedly for students through various activities both as guidance, examinations and academic tests. Academic test activities will run smoothly and affordable with the help of facilities.At Musirawas University, the lack of information technology used makes all work done in writing. Where in the process of academic tests for newly enrolled students, it is still done manually. Musirawas University has also applied a test of academic potential which aims to find out the talents and abilities as well as the standard of passing or not for prospective new students.In general, the academic test system at UNMURA has met educational standards, except that there are still some weaknesses and the processing is still not computerized, so further development needs to be done to overcome these shortcomings. Keyword : Information System, test academic potential, Website
MODEL PENGAMBILAN KEPUTUSAN PENERIMA BEASISWA CSR UNIVERSITAS BINA INSAN MENGGUNAKAN PROFILE MATCHING ali amran; Bunga Intan; Lukman Sunardi
Jurnal Teknologi Informasi Mura Vol 12 No 02 (2020): Jurnal Teknologi Informasi Mura Desember
Publisher : LPPM UNIVERSITAS BINA INSAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32767/jti.v12i02.1098

Abstract

Pendidikan merupakan poros utama kemajuan suatu bangsa serta memiliki posisi yang strategis bagi kehidupan manusia. Semakin baik mutu pendidikan, maka akan semakin pesat kemajuan sebuah bangsa, begitu pula sebaliknya. Keberhasilan pendidikan akan tercapai jika ada usaha untuk meningkatkan mutu pendidikan. Universitas Bina Insan merupakan salah satu lembaga penyelenggara pendidikan tinggi yang ada di Kota Lubuklinggau. Saat ini Universitas Bina Insan memiliki empat fakultas dengan delapan program studi. Program Beasiswa Corporate Social Responsibility (CSR) Universitas Bina Insan adalah salah satu upaya pemberian beasiswa kepada calon mahasiswa lulusan Sekolah Menengah Atas (SMA) atau sederajat yang memiliki nilai akademik bagus tetapi memiliki keterbatasan ekonomi untuk melanjutkan ke perguruan tinggi. Permasalahan yang muncul saat ini adalaj metode yang digunakan dalam menentukan penerima beasiswa Corporate Social Responsibility (CSR) Universitas Bina Insan dilakukan secara manual atau proses penentuan penerima beasiswa CSR dilakukan dengan melihat indicator penilaian seperti nilai akademik dan kondisi ekonomi yang diinput secara manual. Hal ini mengakibatkan proses penilaian membutuhkan waktu yang lama dan tidak terdokumentasi dengan baik. Untuk mengatasi masalah yang ada maka dibutuhkan sebuah sistem aplikasi berbasis computer dan menggunaan metode yang dapat digunakan untuk membantu menyeleksi calon mahasiswa penerima beasiswa Corporate Social Responsibility (CSR). Sistem tersebut dinamakan Sistem pendukung keputusan dan metode yang digunakan adalah Profile Matching.
MODEL PENGAMBILAN KEPUTUSAN PENERIMA BEASISWA CSR UNIVERSITAS BINA INSAN MENGGUNAKAN PROFILE MATCHING ali amran; Bunga Intan; Lukman Sunardi
Jurnal Teknologi Informasi Mura Vol 12 No 2 (2020): Jurnal Teknologi Informasi Mura Desember
Publisher : LPPM UNIVERSITAS BINA INSAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32767/jti.v12i02.1098

Abstract

Pendidikan merupakan poros utama kemajuan suatu bangsa serta memiliki posisi yang strategis bagi kehidupan manusia. Semakin baik mutu pendidikan, maka akan semakin pesat kemajuan sebuah bangsa, begitu pula sebaliknya. Keberhasilan pendidikan akan tercapai jika ada usaha untuk meningkatkan mutu pendidikan. Universitas Bina Insan merupakan salah satu lembaga penyelenggara pendidikan tinggi yang ada di Kota Lubuklinggau. Saat ini Universitas Bina Insan memiliki empat fakultas dengan delapan program studi. Program Beasiswa Corporate Social Responsibility (CSR) Universitas Bina Insan adalah salah satu upaya pemberian beasiswa kepada calon mahasiswa lulusan Sekolah Menengah Atas (SMA) atau sederajat yang memiliki nilai akademik bagus tetapi memiliki keterbatasan ekonomi untuk melanjutkan ke perguruan tinggi. Permasalahan yang muncul saat ini adalaj metode yang digunakan dalam menentukan penerima beasiswa Corporate Social Responsibility (CSR) Universitas Bina Insan dilakukan secara manual atau proses penentuan penerima beasiswa CSR dilakukan dengan melihat indicator penilaian seperti nilai akademik dan kondisi ekonomi yang diinput secara manual. Hal ini mengakibatkan proses penilaian membutuhkan waktu yang lama dan tidak terdokumentasi dengan baik. Untuk mengatasi masalah yang ada maka dibutuhkan sebuah sistem aplikasi berbasis computer dan menggunaan metode yang dapat digunakan untuk membantu menyeleksi calon mahasiswa penerima beasiswa Corporate Social Responsibility (CSR). Sistem tersebut dinamakan Sistem pendukung keputusan dan metode yang digunakan adalah Profile Matching.
Pengaruh pH dan Konsentrasi Terhadap Penyerapan Zat Warna Rhodamin B Menggunakan Karbon Aktif Kulit Pisang Kepok (Musa balbisiana Colla) Muhamad Daviya Nur Fauzi; Edi Nasra; Ali Amran; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.459 KB) | DOI: 10.24036/p.v10i2.112375

Abstract

Rhodamine B is a textile dye which can cause environmental pollution. Rhodamin B dyes found in waters can cause damage to ecosystems both animals and plants, so a method is needed to overcome the impact of pollution by Rhodamin B waste. One of the most efficient methods is the adsorption method using activated carbon from Kepok banana peels (Musa balbisiana Colla ). The purpose of this study was to determine the optimum conditions for absorption and optimum absorption capacity of Rhodamine B by batch method with variations in pH, concentration, particle size, stirring time and stirring speed. The results showed the absorption capacity at optimum conditions for the absorption of Rhodamine B at pH 4 and concentration of 150 mg / L.
Degradasi Zat Warna Methyl Violet dengan Katalis ZnO/Ag Menggunakan Metode Fotosonolisis Rahma Sari; Hary Sanjaya; Yohandri Yohandri; Ali Amran; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1656.26 KB) | DOI: 10.24036/p.v11i1.113261

Abstract

Abstract – the photosonolysis method was used for the degradation of methyl violet in the sample solution using a ZnO doping Ag catalyst. This study aims to determine the effect of radiation time and the addition of Ag doping on ZnO catalyst on the degradation of Methyl violet. UV-Vis spectrophotometer was used to calculate the absorbance concentration of methyl violet before and after degradation while UV-DRS was used to measure the band gap value. The results showed that the highest percentage of Methyl violet degradation was 93.51% at 120 minutes using ZnO without doping. The highest degradation of methyl violet was at 90.50% using a 10% ZnO/Ag catalyst. the band gap obtained from the measurement of ZnO/Ag is 3.26%.Keywords: degradasi, Methyl Violet, ZnO/Ag, Photosonolysis, Band gap
Kelarutan Pigmen Anorganik Merah dan Biru Dalam Gelasi Mikroemulsi Water In Oil dari Sistem Air, (SDBS), dan Pentanol Untuk Tinta Ballpoint Suci Liani Murni; Ali Amran
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v10i1.109570

Abstract

Research has been carried out on the solubility of red and blue inorganic pigments in water-in-water microemulsion gelation from water systems, (SDBS), and pentanol for ballpoint inks. The method used is the sol-gel method by changing the microemulsion liquid into a gel by the sol-gel process at low temperatures. The formation of gels from microemulsion water in oil is done by the addition of tetra ethyl ortho silicate and ethanol. The amount of tetra ethyl ortho silicate added was 1: 8 mole ratio to the amount of water in a microemulsion of water in oil. The purpose of this study is to prepare gel from microemulsion water in oil, and determine the stability of the ink obtained based on the solubility test, density and refractive index of inorganic pigments in red and blue so that it can be applied to ballpoint inks. The measurement of the refractive index is done using the ABBE Refractometer. The results showed that the gel produced was semi-solid and had the ability to dissolve inorganic pigments larger and obtain solubility results in red inorganic pigments by 0.087 grams while the solubility of blue pigments by 0.026 grams.
Kelarutan CdS dan CuS dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan SDBS dan Pentanol Rahmi Fauziah; Minda Azhar; Hary Sanjaya; Ali Amran
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1217.19 KB) | DOI: 10.24036/p.v9i2.109586

Abstract

Surfactants are active compounds that act on the surface of a liquid, which can reduce the surface tension between oil and water. The purpose of this study was to determine the solubility of yellow and black inorganic pigments in water in oil microemulsion gelation, which was applied to ballpoint ink. The method used for sol preparation is the gelation method (sol-gel process). The sol gel process is the process of forming inorganic compounds through chemical reactions in solution, and occurs at a temperature of 65oC. The sol gel process undergoes a phase change from the colloid suspension (sol) and finally forms a network called a gel. Dye solubility was observed by the amount of yellow and black inorganic pigment solutes in water in oil microemulsion. The solubility of the yellow pigment is 0.096 grams, while the black pigment is 0.088 grams. To see the density of the pigment, a density test was carried out. The total density produced in yellow inorganic pigment is 0.933 gram / cm3 and black inorganic pigment is 0.914 gram / cm3. Measurement of the refractive index and turbidity (turbidity) to determine the homogeneity of the yellow and black pigments was carried out using an ABBE refractometer and a turbidimeter. The results of the refractive index measurement are associated with pigment solubility, the greater the pigment solubility, the higher the refractive index and turbidity values.
Meta-Analysis of the Influence of the STEM-Based Project Based Learning (PjBL) Model on Science Learning Yeni Agustin; Lufri; Ali Amran; Ellizar
International Journal Of Humanities Education and Social Sciences (IJHESS) Vol 2 No 3 (2022): IJHESS-DECEMBER 2022
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhess.v2i3.331

Abstract

In science learning, the STEM approach has been combined with project-based learning. This is an easy way to introduce the STEM approach to science learning. STEM (Science, Technology, Engineering, and Mathematics)-based learning can train students in applying their knowledge to create designs as a form of solving environmental-related problems by utilizing technology. This study will analyze how much influence STEM education with the PjBL model has on student learning outcomes. This study uses a meta-analysis method by calculating the effect size. Research data was obtained from 50 national and international journals. That the results of the analysis of the influence of the STEM education integration PjBL meta model on learning outcomes based on class level found that the STEM education integration PjBL model gave the highest influence at the Junior High School level, namely with an effect size of 2.07, then Senior High School, namely with an effect size 1.42, and Elementary School with an effect size of 1.39. Meanwhile, the appearance of Higher Education is in the smallest height category, namely 0.86. This shows that the STEM education integration PjBL model is effective when used at all levels of education. Based on the subjects, it was found that mathematics was in the highest category with an effect value of 3.03, while chemistry was in the medium category with an effect size of 0.60. So it can be concluded that the effect size of the STEM education integrated PjBL model on learning outcomes in terms of subjects has a high effect.