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Analisis Kandungan Besi (Fe) dan Nikel (Ni) dalam Bijih Mangan di Daerah Taming Tonga Kabupaten Pasaman Barat secara Spektrofotometri Serapan Atom Yulvi, Dony; Amrin, Amrin; Nasra, Edi
Periodic Vol 1, No 2 (2012)
Publisher : Jurusan Kimia FMIPA UNP

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Abstract

Telah dilakukan penelitian tentang analisis kandungan besi dan nikel dalam bijih mangan yang tedapat di daerah taming tonga secara spektrofotometri serapan atom. Penelitian ini bertujuan untuk menentukan kandungan besi (Fe) dan nikel (Ni) dengan variasi pelarut, variasi ukuran partikel secara spektrofotometri serapan atom. Penelitian ini menggunakan metoda destruksi basah, dimana proses pendestruksian dilakukan dengan beberapa variasi yaitu variasi pelarut : HCl pekat, HNO3 pekat, dan HCl-HNO3 pekat (3:1), variasi ukuran partikel yaitu ≤ 63 µm, > 63 - ≤ 75 µm, dan > 75 - ≤ 90 µm. Hasil Penelitian ini menunjukkan kadar besi tertinggi didapatkan dengan menggunakan pelarut Aquaregia yaitu 10,402 % dengan ukuran partikel ≤ 63 µm sedangkan kadar nikel tertinggi didapatkan dengan menggunakan pelarut HNO3 yaitu 0,504 % dengan ukuran partikel terbaik ≤ 63 µm.
Analisis Silikon (Si) dan Magnesium (Mg) dalam Tanah Lempung di Kabupaten Tanah Datar Secara Spektrofotometri Serapan Atom Angraini, Wiwit; Amrin, Amrin; Bahrizal, Bahrizal
Periodic Vol 1, No 2 (2012)
Publisher : Jurusan Kimia FMIPA UNP

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Abstract

Telah dilakukan penelitian tentang analisis silikon dan magnesium dalam tanah lempung yang terdapat di Kabupaten Tanah Datar secara Spektrofotometri Serapan Atom. Penelitian ini bertujuan untuk menentukan kandungan silikon (Si) dan magnesium (Mg) dengan jenis pelarut, ukuran partikel dan konsentrasi pelarut terbaik secara spektrofotometri serapan atom. Analisis silikon dan magnesium dilakukan dengan menggunakan metoda destruksi basah, dimana proses pendestruksian dilakukan dengan beberapa variasi yaitu variasi pelarut : HF, HCl pekat, HNO3 pekat, dan HCl-HNO3 pekat (3:1), variasi ukuran partikel yaitu ≤ 63 μm, > 63 - ≤ 75 μm, dan > 75 - ≤ 90 μm serta variasi konsentrasi pelarut HF yaitu 23 M, 18 M, 12 M, 6 M dan variasi konsentrasi pelarut HCl yaitu 12 M, 9 M, 6 M dan 3 M. Hasil penelitian menunjukkan bahwa kandungan silikon terbaik didapatkan menggunakan pelarut HF 12 M dengan ukuran partikel ≤63µm yaitu 26,79% dan kandungan magnesium terbaik didapatkan menggunakan pelarut HCl 9 M dengan ukuran partikel ≤63 µm yaitu 1,08%.
Analysis Content Of Copper (Cu) And Manganese (Mn) In Carrot (Daucus Carota L.) With Atomic Absorption Spectrophotometry Methods Lanas, Afniati; Amrin, Amrin; Rizal, Bahrizal
Periodic Vol 2, No 2 (2013)
Publisher : Jurusan Kimia FMIPA UNP

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Abstract

Carrots (Daucus Carrota L.) is widely grown vegetables. Soil as the growth of vegetables such as carrots can be contaminated media by harmful substances, such as heavy metals. Has done research on the analysis of copper and manganese in the carrots in the area Talago Koto Baru, Tanah Datar and area Bangkaweh,Agam with Atomic Absorption Spectrophotometry method. This study aims to determine the content of copper (Cu) and manganese (Mn) in the carrots and to determine the type of good solvent in the analysis of copper (Cu) and manganese (Mn) in carrot by Atomic Absorption Spectrophotometry method. This study uses a wet destruction method, where the destruction is done with some variation of the solvent variation: pa HClO4, HNO3 pa, pa and HNO3-HClO4 (4:1). Research results showed that carrot in the area Talago Koto Baru, Tanah Datar and area Bangkaweh,Agam is still below safe limits but should still be on the alert. Best solvent for metal content analysis of Cu and Mn in the sample carrots for area Talago Koto Baru, Tanah Datar and area Bangkaweh, Agam is HNO3 pa.
ANALISIS KANDUNGAN KADMIUM (Cd) DAN SENG (Zn) DALAM KUBIS BUNGA (Brassica oleracea var. botrytis L) DENGAN METODE SPEKTROFOTOMETRI SERAPAN ATOM Pahdinol, Deski; Amrin, Amrin; Nasra, Edi
Periodic Vol 2, No 2 (2013)
Publisher : Jurusan Kimia FMIPA UNP

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Flowers cabbage (Brassica oleracea var. botrytis L) is an important and widely grown vegetable in many places. Soil as the growth of vegetables such as flowers cabbage can be contaminated media by harmful substances, such as heavy metals like cadmium (Cd) and zinc (Zn). Analysis of cadmium and zinc contents in flowers cabbage in the Koto Baru in Tanah Datar and Padang Lua in Agam by Atomic Absorption Spectrophotometry has been done. This study aims to determine the content of cadmium (Cd) and zinc (Zn) in flowers cabbage and to know what kind of a good solvent on the analysis of the content of cadmium (Cd) and zinc (Zn) in flowers cabbage by Atomic Absorption Spectrophotometry. This study uses a wet destruction, where the destruction process done with some variation of the solvent variation: HClO4 p.a, HNO3 p.a and HNO3-HClO4 mixture (4:1). Research results showed that local flowers cabbage in Koto Baru Tanah Datar and Padang Lua Agam is still below the safety limit but still have to watch out for. Good solvent for analysis of Cd metal content in the sample flowers cabbage  for Koto Baru area of ​​Tanah Datar is HNO3-HClO4 mixture (4:1) for a Padang Lua, Agam is HClO4 p.a good solvent for analysis of Zn metal content in the sample flowers cabbage for Koto Baru area of ​​Tanah Datar and Agam, Padang Lua is HNO3-HClO4 mixture.
DATA MINING DENGAN ALGORITMA APRIORI UNTUK PENENTUAN ATURAN ASOSIASI POLA PEMBELIAN PUPUK Amrin, Amrin
Paradigma - Jurnal Komputer dan Informatika Vol 19, No 1 (2017): Periode Maret
Publisher : AMIK BSI Jakarta

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Abstract

In order to find out what fertilizer purchased by consumers, can be done with analytical techniques that is the analysis of consumer buying habits. Detection of fertilizers often purchased simultaneously is done using association rules. In this research will be used a priori algorithm for determining the rules of association of fertilizer purchases. From the results of the discussion and analysis of data can be concluded that with the application of a priori algorithm in determining the combination between itemsets with minimum support of 20% and minimum confidence 75% found 6 association rules, which has the highest value of support and confidence is if the consumer made a purchase transaction of fertilizer Organic and urea fertilizers simultaneously with the value of 60% support and 86% confidence value. Thus, if there are consumers buying organic fertilizers, then the possibility of consumers buying urea fertilizer is 86%.
DIAGNOSIS KESULITAN BELAJAR DAN PENGAJARAN REMEDIAL DALAM PENDIDIKAN IPA Amrin, Amrin
PENDIDIKAN FISIKA Vol 1, No 1 (2013): Jurnal Pendidikan Fisika
Publisher : Universitas Muhammadiyah Makassar

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Abstract

Salah satu keadaan subyek didik yang perlu mendapat perhatian guru ialah kesulitan mereka di dalam belajar. Banyak guru yang merasa aman jika skor rata-rata yang dicapai para siswanya  melebihi batas lulus yang ditentukan. Mereka kurang menyadari bahwa sesungguhnya skor rata-rata tidak selalu menggambarkan keberhasilan proses belajar mengajaryang langsung di kelas. Tugas guru tidak hanya sampai pada pencapaian skor rata-rata yang memadai, didik asuhannya dapat berkembangsecara optimal menurut irama dan cara yang sesuai.Oleh karena subyek didik memiliki perkembangan yang unik baik dipengaruhi oleh faktor-faktor bawaan, lingkungan, ataupun interaksi antara keduanya, maka di dalam tiap kelas tidak mustahil akan terdapat beberapa subyek didik yang mengalami kesulitan belajar.Kesulitan tersebut hendaknya dideteksi oleh para guru  sedini mungkin agar dapatdirencanakan program remedi yang sesuai dan bermanfaat.Sekurang-kurangnya  ada  dua  kegiatan  yang  dapat  dilakukan  untuk  medeteksi kesulitan  belajar  secara  cermat,yakni; Melakukan observasi secara langsung, danMelakukan pengukuran hasil belajar kemudian menganlisis hasilnya.
DIAGNOSIS KESULITAN BELAJAR DAN PENGAJARAN REMEDIAL DALAM PENDIDIKAN IPA Amrin, Amrin
JURNAL PENDIDIKAN FISIKA Vol 1, No 1 (2013): PENDIDIKAN FISIKA
Publisher : JURNAL PENDIDIKAN FISIKA

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Abstract

Salah satu keadaan subyek didik yang perlu mendapat perhatian guru ialah kesulitan mereka di dalam belajar. Banyak guru yang merasa aman jika skor rata-rata yang dicapai para siswanya  melebihi batas lulus yang ditentukan. Mereka kurang menyadari bahwa sesungguhnya skor rata-rata tidak selalu menggambarkan keberhasilan proses belajar mengajar yang langsung di kelas. Tugas guru tidak hanya sampai pada pencapaian skor rata-rata yang memadai, didik asuhannya dapat berkembang secara optimal menurut irama dan cara yang sesuai. Oleh karena subyek didik memiliki perkembangan yang unik baik dipengaruhi oleh faktor-faktor bawaan, lingkungan, ataupun interaksi antara keduanya, maka di dalam tiap kelas tidak mustahil akan terdapat beberapa subyek didik yang mengalami kesulitan belajar. Kesulitan tersebut hendaknya dideteksi oleh para guru  sedini mungkin agar dapat direncanakan program remedi yang sesuai dan bermanfaat. Kesulitan belajar yang mereka  alami dalam suatu kelas tentu saja bervariasi baik intensitas  maupun  jenis  atau  penyebabnya,  subyek didik yang mengalami  kesulitan  yang  ekstrim  biasanya  tidak  ditemukan  lagi  di  kelas-kelas  biasa  akan  tetapi  sudah  terseleksi  pada  kelas-kelas  awal. Adapun kesulitan-kesulitan  belajar yang sering dihadapi siswa  adalah sebagai berikut: (1) melakukan observasi,  (2)  melakukan klasifikasi, (3)  menggunakan dan memanipulasi angka-angka, (4)  berkomunikasi, (5) melakukan prediksi,  (6) Menarik kesimpulan,  (7)  mengontrol variabel,  (8)  menginterpretasikan data,  (9)  merumuskan hipotesis, dan  (10)  melakukan eksperimen Kata Kunci: Kesulitan Belajar, Pengajaran Remedial, Pendidikan IPA
Perbandingan Metode Neural Network Model Radial Basis Function Dan Multilayer Perceptron Untuk Analisa Risiko Kredit Mobil Amrin, Amrin
Paradigma - Jurnal Komputer dan Informatika Vol 20, No 1 (2018): Periode Maret 2018
Publisher : AMIK BSI Jakarta

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Abstract

Problems are often encountered in the provision of credit is to determine lending decisions to someone, while other issues are not all credit payments can run well. Among the causes are errors of judgment in making credit decisions. In this study will be used  neural network with radial basis function method and neural network with multilayer perceptron method to analyze the risk of car credit,  then compare which method is the better. From the test results to measure the performance of the method is to use testing methods confusion matrix and ROC curve, it is known that the method of  neural network with multilayer perceptron is better than method of neural network with radial basis function where has  a value of accuracy is 96,1%  and value of AUC is 0.999. This shows that the model produced, including the classification is Exellent Clasification because it has the value of AUC  between 0.90- 1.00.
Analisa Kelayakan Pemberian Kredit Mobil Dengan Menggunakan Metode Neural Network Model Radial Basis Function Amrin, Amrin
Paradigma - Jurnal Komputer dan Informatika Vol 19, No 2 (2017): Periode September 2017
Publisher : AMIK BSI Jakarta

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Abstract

Problems are often encountered in the provision of credit is to determine lending decisions to someone, while other issues are not all credit payments can run well. Among the causes are errors of judgment in making credit decisions. In this study will be used  neural network with radial basis function method to analyze the feasibility of providing car loans. From the test results to measure the performance of the method is to use testing methods confusion matrix and ROC curve, it is known that the method of back neural network radial basis function has a value of 89,2% accuracy and AUC value of 0.9471. This shows that the model produced, including the classification is Exellent Clasification because it has the AUC values between 0.90- 1.00.
PENGARUH INTERVENSI NONFARMAKOLOGI DAN FARMAKOLOGI TERHADAP PENURUNAN INTENSITAS NYERI PADA PASIEN PENYAKIT JANTUNG KORONER DI RUANG ICCU RSU KOTA LANGSA TAHUN 2012 Rahayu, Sunarsih; Amrin, Amrin
(JKG) JURNAL KEPERAWATAN GLOBAL Vol 1, No 1 (2016): JURNAL KEPERAWATAN GLOBAL
Publisher : (JKG) JURNAL KEPERAWATAN GLOBAL

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Abstract : Intervention Of Nonpharmacological And Pharmacological, Coronary Heart Disease, Pain Intensity. Chest pain in the cardiovascular system is one of the main complaints which often complained patients to ask for medical help. The pain is different from one individual to another based on the pain threshold and tolerance release of endorphins enkefalin which incurred hifofisis into the circulation. The chest pain which felt by the patients tend to require more urgent attention than the other symptoms. Objectives of the study was to determine the intervention effect of pharmacologi and nonpharmacologi to pain intensity decrease in coronary heart disease patients. This type of research was experimental, research design using quasi experiment. Sampling using total of sampling method. Analysis of data used was t dependent test. Results was show that there was a significant effect between intensity of pain before intervention to the intensity of pain after intervention. Conclusion, Intervention of nonpharmacologi and pharmacologi provide a positive and significant effect on pain intensity decrease.