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Jurnal Aplikasi Fisika
Published by Universitas Halu Oleo
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Jurnal Aplikasi Fisika (JAF) terbit pertama kali pada bulan Agustus 2005, diterbitkan dengan frekuensi 2 kali setahun namun karna banyaknya paper yang akan dipublish terutama dari mahasiswa Fisika baik S1 maupun S2 yang telah menyelesaikan tugas akhir mulai Tahun 2017 jurnal ini terbit 3 kali dalam setahun (Edisi Pebruari, Juni, dan Oktober) .
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Articles 75 Documents
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Penerapan Model Problem Based Learning dengan Pendekatan Scientific untuk Meningkatkan Aktivitas dan Hasil Belajar Siswa Hunaidah .; Luh Sukariasih
Jurnal Aplikasi Fisika Vol 12, No 1 (2016): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Abstract

Has been conducting research with the title: "Application of Model Problem Based Learning Approach Scientific to Increase Activity and Learning Outcomes Grade VIIII SMP Negeri 5 Kendari Main Material Plane Simple (Class Action Research in Class VIIIi SMP Negeri 5 Kendari Semister I Academic Year 2014 / 2015) ". This research has been conducted in the first semester of the academic year 2014/2015, which took place on October 1 to October 7 2014 Junior High School 5 Kendari. Subjects in this study were students VIIIiSekolah SMP Negeri 5 Kendaripada semester of academic year 2014/2015 the number of students 35 people. The data obtained in this study is the activity and the thoroughness of learning outcomes derived from observations and test results sheet belajar.Analisis data were statistically deskriptif.Hasil of this research are: 1) the activity of students in the process pembelajan tends to increase, which is shown by the acquisition score on average in the first cycle of 2.45 included in the category enough and rose by 0.65 in the second cycle to 3.1 were categorized as good; 2) learning outcomes VIIIi grade science students SMP Negeri 5 Kendari taught with the application of Problem Based Learning with Scientific approach to the range of scores obtained as follows: the first cycle obtained a score of 1.4 up to 3.7 with an average score of 2, 84 and a standard deviation of 0.44; in the second cycle obtained a score of 2.00 up to 3.85 with an average score of 3.15 and a standard deviation of 0.37; and 3) learning outcomes VIIIi grade science students SMP Negeri 5 Kendari on the subject matter of simple air can be improved by applying the model of Problem Based Learning with Scientific approach, with the acquisition of an average score of student learning outcomes in the first cycle of 2.84 with the percentage of students who has been thoroughly studied by 71.43%, while in the second cycle of the average student learning outcomes increased to 3.15 with the percentage of students who have thoroughly studied by 91.43%
Analisis Komponen Kimia pada Liquid Volatile Matter Kulit Biji Mete Menggunakan Metode Gas Chromatography Muhammad Jahiding; Ita Kurniasih; W.S. Ilmawati
Jurnal Aplikasi Fisika Vol 12, No 1 (2016): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Abstract

The purpose of this study was to determine the effect of temperature pyrolysis to chemical component Liquid Volatile Matter (LVM) cashew nut shell. Cashew nut shell is dried, then pyrolysed in the reactor at the temperature of each 400oC, 500oC, 600oC, and 700°C. Pyrolysed cashew nut shell produces smoke condensed known as Liquid Volatile Matter. LVM volume of cashew nut shell is measured using a measuring cup and the building blocks of LVM characterized using Gas Chromatography (GC). At any temperature pyrolysis, the volume of cashew nut shell LVM is different, each 100 ml, 150 ml, 150 ml and 125 ml. Similarly, the type of compound and the percentage vary at any temperature pyrolysis. LVM cashew nut shell composed of ammonia, hydrazine, hexane, acetic acid, and phenol.
PENYEBARAN POTENSI AIR TANAH DANGKAL UNTUK KEBUTUHAN AIR BERSIH BERDASARKAN KUALITAS AIR TANAH DI SEKITAR PESISIR TELUK KENDARI Irawati .; Firdaus .
Jurnal Aplikasi Fisika Vol 11, No 1 (2015): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Abstract

Penelitian ini dilakukan untuk mengetahui tingkat pencemaran air tanah yang berada di wilayah psisir kota Kendari pada 5 kecamatan yang mengelilingi teluk Kendari  yaitu kecamatan Kendari, Kendari Barat, Mandonga, Poasia dan Abeli. Pengambilan sampel air dilakukan ipada sebaran air tanah dangkal sebanyak 20 sampel. Dari  hasil analisis yang  dilakukan dengan menggunakan metode Indeks Pencemaran,  diketahui bahwa kualitas air sumur gali di sekitar pesisir Teluk Kendari kurang layak dikonsumsi sebagai air minum sebab telah melampaui nilai ambang Baku Mutu Air kelas 1 yang ditetapkan PPRI No.82 tahun 2001 . Parameter fisika  yang melampaui baku mutu air  yaitu kekeruhan (TSS) dengan nilai rata-rata melebihi 100 mg/L. Parameter kimia diatas baku mutu yaitu Besi (Fe) dengan nilai lebih dari 4 mg/L dan Magnesium (Mg) dengan nilai rata-rata lebih dari 60 mg/L. Tingginya beberapa parameter ini telah mengindikasikan adanya pencemaran di lokasi tersebut. Hasil perhitungan penentuan status mutu air dengan metode Indeks Pencemaran menunjukkan bahwa secara umum di lokasi tersebut tergolong cemar sedang dengan nilai indeks 5,0 < PIj ≤10
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE MAKE A MATCH UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR KIMIA SISWA PADA MATERI POKOK SENYAWA TURUNAN ALKANA DI KELAS XII IPA5 SMA NEGERI 5 KENDARI Basri S.; Kartikaningsih R.
Jurnal Aplikasi Fisika Vol 10, No 2 (2014): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Abstract

Tujuan penelitian ini adalah untuk meningkatkan aktivitas dan hasil belajar Kimia siswa dengan menerapkan model pembelajaran kooperatif tipe make a match pada materi pokok Senyawa Turunan Alkana. Penelitian ini dilaksanakan mulai bulan Januari sampai bulan Februari 2014, pada semester genap tahun ajaran 2013/2014 di kelas XII IPA5 SMA Negeri 5 Kendari. Subyek penelitian ini adalah siswa kelas XII IPA5 SMA Negeri 5 Kendari dengan jumlah siswa 39 orang yang terdaftar pada semester genap tahun ajaran 2013/2014). Prosedur penelitian tindakan kelas ini terdiri  dari 2 siklus. Teknik pengumpulan data pada penelitian ini adalah memberikan es hasil belajar dan mengisi lembar observasi aktivitas siswa dan guru. Berdasarkan hasil analisis data diperoleh hasil penelitian bahwa penerapan model pembelajaran kooperatif tipe make a match dapat meningkatkan aktivitas dan hasil belajar Kimia siswa pada materi pokok Senyawa Turunan Alkana di kelas XII IPA5SMA Negeri 5 Kendari. Hal ini ditunjukkan dengan: 1) meningkatnya rata-rata skor  aktivitas siswa pada tiap siklus, dari rata-rata skor 2,69 yang dikategorikan cukup baik pada siklus I menjadi 3,01 yang dikategorikan baikpada siklus II; 2) meningkatnya rata-rata hasil belajar Kimia siswa dari siklus I ke siklus II yaitu dari 68 menjadi 79 dengan standar deviasi hasil belajar Kimia siswa pada siklus I sebesar 11 turun menjadi 9 pada  siklus II; dan 3) meningkatnya persentase ketuntasan hasil belajar Kimia siswa dari siklus I ke siklus II sebesar 49%, yaitu 41% (16 siswa tuntas dari 39 orang siswa) menjadi 90% (35 siswa tuntas dari 39 orang siswa).
A Preliminary Study of Analysis and Characterization of Briquettes Quality on Asphalt Bitument from Buton Island as Alternative Fuel Arisona .; Anas M.; Musta C.
Jurnal Aplikasi Fisika Vol 10, No 1 (2014): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Abstract

In this study, the material  used is asphal bitument then made briquettes weighing 10 gram in each sample. In making the briquettes used a cylindrical mod with a diameter of 2.5 cm and a height of 7 cm. After compactioned the briquettes produced dried first. Drying of briquetttes made using free air during 4 days to reduce the water content contained in the briquettes. Furthermore, the heat test and proximat analysis (i.e : analysis of water content, ash content, volatile matter, fixed carbon, and density). Calorific test and proximate analysis aims to determine the  quality of asphal bitument briquettes that will be used as a fuel alternative. This results of this study indicate that the asphalt briquettes have analyzed proximet variation i.e.: water content between 1.23% -7.26% ; volatile matter : 16,797%-32,02% ; ash content : 48.96%-61.35% ; fixed carbon : 11.76%-33.36 ; and density : 1,22 g/cm3-1.92 g/cm3. Asphalt briquettes obtained has a calorific value variation between 1902.39 kcal/kg- 3407.82 kcal/kg, with the largest being  the calorific  value of  cashew charcoal with variation of 30 %. This provides an initial indication for the use of asphalt bitument briquettes as alternative fuel and also provide information that adhesive such as cashew charcoal can be used as aggregate  to strengthen the adhesion of  asphalt on the pavement layers.
Pengaruh Perekat Liquid Volatile Matter (LVM) Terhadap Nilai Kalor Briket Hybrid) yang Dipreparasi Menggunakan Pirolisis M. Jahiding; w. Wati; W.S. Ilmawati
Jurnal Aplikasi Fisika Vol 12, No 2 (2016): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Telah dilakukan pengujian kualitas briket hybrid batubara muda dan kulit mete menggunakan analisis proksimat, nilai kalor, dan uji nyala.  Tujuan dari penelitian ini adalah untuk menentukan karakteristik proksimat, nilai kalor dan uji nyala terhadap temperatur pirolisis.  Serbuk briket batubara muda dan kulit mete di buat dengan menggunakan liquid volatile matter sebagai perekat yang divariasikan dengan komposisi 5%, 10%, dan 15% dari massa total sampel.  Ukuran butiran batubara muda dan kulit mete yang digunakan sebesar 60 mesh dan 100 mesh.  Sampel dicetak dengan menggunakan cetakan silinder dengan diameter 1,92 cm dengan seragam kompaksi briket.  Pengujian kualitas briket hybrid batubara muda dan kulit mete meliputi: Kadar air, volatile matters, kadar abu, fixed carbon, nilai kalori, waktu sulut dan lama nyala. Hasil penelitian menunjukkan bahwa kenaikkan temperatur pirolisis dapat menurunkan kadar air, fixed carbon dan nilai kalor serta dapat menaikkan volatile matters dan kadar abu. Briket hybrid batubara muda dan kulit mete memiliki nilai kalor maksimum sebesar 7941,2209 kal/gr pada temperatur 400⁰C. Kenaikkan temperatur mempengaruhi waktu sulut dan waktu nyala briket hybrid batubara muda dan kulit mete, semakin tinggi temperatur pirolisis semakin lama waktu sulut dan semakin cepat waktu nyalanya.
EVOLUSI MIKROSTRUKTUR DARI KERAMIK PADUAN SILIKA (SiO2) DAN ALUMINA (Al2O3) L. Lestari; R. Riwasa; P.E. Susilowati; I.N. Sudiana
Jurnal Aplikasi Fisika Vol 13, No 1 (2017): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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The study on the effect of sintering temperature on the microstructure of ceramic to microstructure of silica (SiO2 and alumina (Al2O3) composite was successfully performed. The microstructure from SEM photos of samples after sintering as well as their crystallinity were studied. Sintering were performed by using electric furnace (conventional) and 2.45 GHz microwave. The crystallinity was determined by using X-Ray Diffraction (XRD). SEM photos shows that with the increasing of sintering temperature, the porosity of samples decreased quickly, the density and hardness also increased. There are differences of their properties between conventional and microwaved sintered samples at same sintering temperature. XRD graphs shows that the crystallinity of samples on sintering by using microwaves higher than that of conventional heating.
PEMBUATAN BRIKET ENERGI TINGGI DARI CANGKANG KAKAO YANG DIAKTIVASI DENGAN MIKROWAVE I Nyoman Sudiana; L. Lestari; M.Z. Firihu; Y.A. Koedoes; G.E. Sandra; Y. Biringgalo; L. Arfad; P.A. Setyo; E. Safitri
Jurnal Aplikasi Fisika Vol 13, No 1 (2017): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Abstract

Charcoal briquettes from cocoa shell have been producting. Composition of glue and cacao shell as well as their microstructure (pores and grains) are optimized in order to obtain briquettes with high calor energy. The optimation of microstructure is performed by microwave activation. High glue content affect to the briquette’s moisture. The composition of glue material and cocoa shell charcoal which give highest calor energy found in this research is 5:95 %. From microstructure evaluation we found that at the pores diameter of 552 micrometer in average and grain size of  152 micrometer, the average energy of activated charcoal cocoa shell is 10,321 kkal/kg.Keywords: Cocoa shell, briquettes, calor energy, charcoal, microstructure, microwave
KAJIAN PENGARUH VARIASI JUMLAH LAPISAN TRANSPARAN TiO2 TERHADAP PERFORMA KERJA SEL SURYA YANG DISENSITISASI DENGAN DYE (DSSC) Ida Usman; Purwo Adi Setyo; Waode Sukmawati Arsyad
Jurnal Aplikasi Fisika Vol 13, No 2 (2017): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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A study of the effect of variations on the number of transparent TiO2 layers on dye-sensitized dye (DSSC) solar cell performance has been conducted. This study aims to make DSSC solar cell with transparent amount of transparent TiO2 transparent layer and characterize its working function by measuring the photovoltaic characteristics. From the results of the research, the Jsc value obtained increases with the increase in the number of layers for the case of cells A and B cells, this is probably related to the increasing number of dye that binds to TiO2 with increasing cell thickness, thus increasing the amount of light absorbed by dye . However, when the thickness of the TiO2 layer is added (cells C and D) the Jsc value actually decreases. A DSSC A cell with a layer of transparent TiO2 layer of 1 layer shows the largest open circuit voltage value of 0.7V, while DSSC B cells show the highest current density value of 2.07mA / cm2, and the highest fill factor (FF) is indicated by Sample D. The results of this study there are many factors that limit the effesiensi DSSC solar cellsKeywords: DSSC, TiO2 Transparent, Number of Layers, Performance
RANCANG BANGUN SET EKSPERIMEN GERAK HARMONIS SEDERHANA MENGGUNAKAN SENSOR PING DAN PHOTODIODA BERBASIS MIKROKONTROLLER Yulkifli .; Yolanda .; Hatthoahira .
Jurnal Aplikasi Fisika Vol 13, No 3 (2017): JURNAL APLIKASI FISIKA
Publisher : Universitas Halu Oleo

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Physics experiments have a very important role. The most important thing that must be considered in performing experimental physics experiment is set. The development of digital experiment set not completely perfect, like a set of simple harmonic motion experiments on the spring. This study aims to determine the performance specifications and design specifications set of experiments manufacture simple harmonic motion sensors based on spring ping and photodioda with LCD display and PC. This research was a laboratory experiment. Set the experiment uses Arduino Uno microcontroller which serves to process the output of the sensor and change the sensor output with the expected output display measurement results of the experimental set of simple harmonic motion in the spring using the LCD and PC. The sensor used is a ping sensor yng function calculates the amplitude and photodiode sensors that function to count the number of oscillations in the spring time (ms). Besides this experimental set period has accuracy with accuracy percentage is 96.16% for a single spring arrangement, 96.40% for the composition of the spring series, and 99.25% for the parallel spring arrangement. While the average percentage error obtained is 3.69% for a single spring arrangement, 3.59% for the arrangement of the spring series, 0.74% for the parallel spring arrangement.Keywords : Arduino Uno microcontroller, photodiode sensor, ping sensor

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