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All Journal Jurnal Ilmu Dasar Jurnal Penelitian Fisika dan Aplikasinya (JPFA) BERKALA SAINSTEK Jurnal Pendidikan Fisika Indonesia Jurnal Spektra UNEJ e-Proceeding R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Fisika FLUX Spektra: Jurnal Fisika dan Aplikasinya SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Pertanian Agros Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Jurnal Teori dan Aplikasi Fisika Jurnal Teknik Elektro dan Komputasi (ELKOM) InSTEM International Journal of Renewable Energy Development Herodotus: Jurnal Pendidikan IPS Jurnal Penelitian Sains dan Teknologi Indonesia

Misto

Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember Jalan Kalimantan 37, Jember 68121

Author-ID : 2976093

Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Karakterisasi Konstanta Dielektrik dan Kapasitansi pada Lemak Hewani dengan Menggunakan Variasi Suhu dan Frekuensi Noer Rimafatin; Bowo Eko Cahyono; Misto Misto
Jurnal Fisika FLUX Vol 16, No 2 (2019): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Fat is a food substance that is very important to maintain the health of the human body. One source of fat is animal fat. Differences in the type of fat can be known based on the electrical properties of materials such as dielectric constant and capacitance. The purpose of this research is to know the characteristic of dielectric constant and capacitance in animal fat by giving treatment of temperature and frequency variation. This research uses parallel plate capacitor method which is connected to the source of alternating current input voltage and voltmeter as the output voltage meter. The samples studied were chicken fat and beef fat. This research uses input voltage with frequency of 1kHz up to 20kHz, while temperature that is used is varied from 45⁰C decrease to 30⁰C. The results obtained from this study show that the increasing frequency results to the decreasing values of capacitance and dielectric constant in chicken fat and cow fat. The effect of temperature on the capacitance and dielectric constant of chicken fat and cow fat shows non linear relationship

Determination of Sesame Oil Quality UsingFraunhofer Difraction Method: Refraction Index as a Temperature Function Nur Inna Alfianinda; Misto Misto; Artoto Arkundato
Jurnal ILMU DASAR Vol 15 No 1 (2014)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Telah dirancang alat uji kemurnian bahan yang bekerja berdasarkan metode difraksi Fraunhofer celah ganda. Metode ini mempunyai akurasi yang baik, tidak memerlukan bahan uji dalam jumlah banyak serta tidak merusak kemurnian bahan uji itu sendiri (non destructive testing/non contactive testing). Pengujian dilakukan dengan menentukan persamaan indeks bias sebagai fungsi suhu bahan uji, yang diperoleh berdasarkan perubahan pola frinji gelap terang difraksi cahaya yang melewati bahan uji untuk variasi suhu yang diberikan (26 °C hingga 90 °C). Dari persamaan indeks bias yang diperoleh kemudian dapat dihitung indeks bias pada suhu sembarang. Uji kemurnian dilakukang dengan membandingkan nilai indeks bias terukur dengan nilai indeks bias referensi pada suhu tertentu. Uji statistik t-test digunakan untuk melihat tingkat akurasi alat. Pada penelitian ini digunakan tiga buah merk minyak wijen yang ada di pasaran. Dari hasil pengukuran dan perhitungan menggunakan minyak wijen tiga macam (A,B dan C) dapat diketahui bahwa dari ketiga bahan uji yang dipilih maka minyak wijen label B memiliki nilai t hitung yang paling kecil dibandingkan minyak wijen label A dan C, sehingga minyak wijen label B dianggap memiliki kualitas yang paling baik dia antara ketiga minyak wijen yang telah di uji. Keywords: Difraksi Fraunhofer, minyak wijen, indeks bias bahan, uji-t

Measurement System of Sugar Content in Liquid Media using Computerized Photodiode Sensor Misto Misto; Tri Mulyono; Alex Alex
Jurnal ILMU DASAR Vol 17 No 1 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

It has been made an electronic system for measurement of sugar cane in solution media. This system uses a pin photodiode as a sensor, laser source, optical fiber, an operational amplifier (Op-Amp), analog to digital converter (ADC) of the Arduino, and computers. The main operation of the measurement system is done by the sensor and controlled by computer. The the photodiode sensor sends a signal to a signal processing unit (op-amp) and converted to a digital signal by the ADC. The digital signal is then forwarded for processing and display (computer). We Concluded that the system working well because of the sugar content information can be simultaneously displayed on the monitor .Keywords: sugar content, pin photodiode, computer

Palm Cooking Oil Refraction Index Measurement Using Single Slit Fraunhofer Diffraction Method Supriyadi Supriyadi; Misto Misto; Yulia Hartanti
Jurnal ILMU DASAR Vol 15 No 2 (2014)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Palm cooking oil refraction index measurement has been done in several temperature using single slit Fraunhofer diffraction method. Ratio between diffraction patterns at the air dan solution medium can be used to determine its refraction index. Using aquades as sample, was obtained refractive index 1.331 with the discrepancy 0.038%. Based on the refractive indexs measured for each temperature were obtained linear equation model: Y=-(0,00145±0,00021)X+(1,54232±0,01757)where R = -0,97266 and R^2=0,94606. Temperature changes influence strongly to refractive index changes of palm cooking oil sample, changes both inversely. Gradient of 0.00145 indicate that refractive index of palm cooking oil sample decrease slowly, so the quality is still good. Keywords : Palm Coocing oil, refractive index, temperature, Fraunhofer diffraction method

STUDY OF NYLON MEMBRANE AS A FILTER FOR CLARIFICATION OF SUGARCANE JUICE Wenny Maulina; Ismia Khilmi Fauzia; Misto Misto
Spektra: Jurnal Fisika dan Aplikasinya Vol 3 No 1 (2018): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 3 Issue 1, April 2018
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Abstrak Membran nilon merupakan lapisan semipermeabel yang terbuat dari jenis polimer poliamida untuk memisahkan partikel tertentu dari larutannya. Pada artikel ini, membran nilon berperan sebagai filter untuk penjernihan nira tebu dengan mengkaji kinerja, efektivitas, dan efisiensi membran. Penelitian dilakukan dengan sistem aliran dead-end pada proses ultrafiltrasi menggunakan empat tekanan transmembran yang berbeda yaitu 1.0, 1.5, 2.0, dan 2.5 bar. Konsentrasi nira tebu sebelum dan sesudah proses ultrafiltrasi dikarakterisasi menggunakan Spektrofotometer UV-Vis. Membran nilon dengan variasi massa 4.5, 5.0, 5.5, 6.0, dan 6.5 gram, menunjukkan fluks air yang sesuai pada rentang 15 â€“ 38 L/m2.jam.bar pada tekanan transmembran. Hasil penelitian menunjukkan bahwa membran nilon yang memiliki kinerja paling baik adalah membran dengan massa benang nilon 4.5 gram karena memiliki nilai fluks paling besar dan nilai koefisien rejeksi paling kecil. Membran dengan massa benang nilon 6.5 gram memiliki efektivitas dan efisiensi penurunan sukrosa yang paling besar. Sedangkan membran dengan massa benang nilon 4.5 gram memiliki efektivitas dan efsiensi penurunan konsentrasi sukrosa yang paling rendah. Kata-kata kunci: membran nilon, nira tebu, kinerja membran, efektivitas, efisiensi. Abstract Nylon membrane is a semipermeable layer made of a type of polyamide polymer to separate certain particles from the solution. In this article, nylon membrane is presented as a filter for clarification of sugarcane juice concerning study on performance evaluation, effectiveness, and efficiency of the membrane. The experiments were conducted according to the principle of the dead-end in an ultrafiltration process using four different transmembrane pressures of 1.0, 1.5, 2.0, and 2.5 bar. The concentration of sugarcane juice before and after ultrafiltration process was characterized using UV-Vis Spectrophotometer. Nylon membranes, which consist of 4.5, 5.0, 5.5, 6.0, and 6.5 gram various mass, showed matched water flux in the range of 15 â€“ 38 L/m2.jam.bar at the transmembrane pressures. The results showed that the best performance nylon membrane was a nylon membrane with a mass of 4.5 gram nylon, because it has the largest flux and the smallest rejection coefficient. Nylon membrane with a mass of 6.5 gram has the biggest effectiveness and efficiency in the reduced of sucrose concentration. Meanwhile, nylon membrane with a mass of 4.5 gram has the lowest effectiveness and efficiency in the reduced of sucrose concentration. Keywords: nylon membrane, sugarcane, membrane performance, effectiveness, efficiency.

HEATING AND QUENCHING PROCEDURE ON THE MAKING OF TRADITIONAL BLACKSMITH STEEL WITH HIGH QUALITY Artoto Arkundato; Misto Misto; Hadi Paramu; Gaguk Jatisukamto; Iwan Sugihartono
Spektra: Jurnal Fisika dan Aplikasinya Vol 4 No 1 (2019): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 4 Issue 1, April 2019
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Blacksmith is a people's business that has been going on for a long time in Indonesia. Based on the experience that has been obtained from time to time and hereditary, the blacksmith industry has been done by the community to meet the needs of agricultural and household utensils. However, observe to this people's business, now it decreases with various causal factors, such as the ease of imported goods on the market with lower prices. Many creative efforts need to be carried out so that these people's businesses remain and increasingly develop, among others by improving the quality of the process of a blacksmith so that their products are quite competitive. This article describes the results of the research in the laboratory regarding the physical processes of heating and quenching under blacksmith, which the results have been applied to community service activities at the Suger Kidul villages in Jember Regency. The study aimed to find the most appropriate procedure for steel tool manufacturing processes so that the blacksmith products have high quality as high hardness. The physical process for blacksmith process is heating and quenching. This study analyzes the proper heat (temperature), proper processing time, and proper media for heating and quenching to produce good harness quality of the product.

UTILIZATION OF TOFU LIQUID WASTE WITH CERAMIC-BASED MICROBIAL FUEL CELL (MFC) TECHNOLOGY Tri Mulyono; Siswanto Siswanto; Misto Misto; Mutiara Garnet R.A; Bowo Eko Cahyono
UNEJ e-Proceeding 2022: E-Prosiding Kolokium Hasil Penelitian dan Pengabdian kepada Masyarakat
Publisher : UPT Penerbitan Universitas Jember

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The purpose of this study was to determine the effect of adding variations in substrate concentration and the effect of variations in the surface area of the electrodes (anode and cathode) on the power density, resulting in a maximum power density value for a period of 13 days. measurement. The first step is measuring voltage and current with substrate concentration without dilution process, then variation of concentration is carried out with 10 times, 8 times, 5 times, 4 times, and 2 times dilutions on ceramics with a diameter of 8 cm. . The second step is to measure the voltage and current by varying the surface area of the electrodes (cathode and anode). The measurement results showed that the maximum power density value obtained was 188.23 mW/m2 without a dilution process, namely with a concentration of 3640 ppm for the 3rd day. While the results of the measurement of the variation of the electrode surface area obtained a maximum power density value of 205.88 mW/m2 on the electrode surface area of 3.57 m2 for the third day. The more surface area of the electrode given at the time of measurement, the more bacteria that are in contact with the electrode, causing the value of the resulting power density to be greater.Keywords: waste tofu, microbial fuel cell (MFC), power density, electrode, ceramic

ENHANCEMENT OF THE NUTRITIONAL AND INCOME OF THE MRAWAN VILLAGE COMMUNITY THROUGH ECO-FRIENDLY QUAIL POULTRY LIVESTOCK AT LOW COST Wenny Maulina; Yuda Cahyoargo Hariadi; Arry Yuariatun Nurhayati; Misto Misto
UNEJ e-Proceeding 2022: E-Prosiding Kolokium Hasil Penelitian dan Pengabdian kepada Masyarakat
Publisher : UPT Penerbitan Universitas Jember

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The yard can provide great benefits for the community, because it can be planted with vegetables, fruits and spices such as turmeric, lemongrass, etc. The yard can also be used as a source of animal protein and an additional source of family income. Quail farming is an alternative for producing eggs which is quite productive in addition to laying hens and ducks. The advantages of quail cultivation are having a small body size and weighing about 130 grams, a short life cycle, high egg productivity (in the peak period of daily egg production it can produce about 90% of the total population in the cage), low feed intake (about 20 grams/quail/day), easy to cultivate and does not require a high investment. Quail can give results in the form of daily egg production and/or meat from rejected quail (quail that have stopped laying eggs or egg productivity that begins to decline after about 8 months of age). Quail cultivation from the yard of the house can be used to maintain approximately 25 quails. Based on these advantages, quail cultivation in the yard can provide family income and increase nutrition. Keywords: quail, yard, nutritional, income

Analisis Gas Terlarut pada Minyak Isolasi sebagai Indikator Kegagalan Transformator Daya dengan Metode Dissolved Gas Analysis Misto Misto; Haryono Haryono
Jurnal Teknik Elektro dan Komputasi (ELKOM) Vol 1, No 2 (2019): ELKOM
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/elkom.v1i2.3091

Transformator daya merupakan peralatan utama dan yang paling penting dalam sistem penyaluran tenaga listrik. Sistem operasional pada transformator daya ini terdapat permasalahan yang umum terjadi seperti kegagalan thermal dan kegagalan elektris. Kegagalan thermal dan elektris umumnya menghasilkan fault gas. Minyak isolasi pada transformator daya selain sebagai pendingin juga berfungsi melarutkan gas-gas akibat kegagalan thermal dan kegagalan elektris. Informasi mengenai adanya indikasi kegagalan pada transformator dapat diperoleh dari hasil identifikasi jenis dan jumlah konsentrasi gas yang terlarut dalam minyak, atau biasa disebut dengan metode Dissolved Gas Analysis (DGA). Metode DGA dapat dilakukan dengan Total Dissolved Combustible Gas (TDCG), Key Gas, Roger’s Ratio, Ratio CO2/CO, dan Duval’s Triangle yang sesuai dengan IEEE std. C57-104.1991 dan IEC 60599. TDCG juga dapat digunakan untuk menentukan jadwal pengujian DGA. Berdasarkan analisis yang telah dilakukan, Transformator Daya II Gardu Induk Tanggul pada tahun 2011,2012 dan 2013 dengan metode TDCG transformator dalam kondisi 2, Key Gas diperoleh CO sebagai gas kunci dengan indikasi kegagalan overheating cellulose,Ratio CO2/CO menunjukkan proses pemburukan sedang terjadi pada isolasi kertas akibat kegagalan high thermal dengan temperature 200°C, Roger’s Ratio terjadi Thermal fault dengan temperature 150 - 300°C dan Duval’s Triangle berada di luar kriteria evaluasi dan jadwal pengujian DGA selanjutnya adalah tiga bulanan.

Analysis of Caffeine Content in Roasting Temperature Variation of Robusta Luwak Coffee from Garahan Jember Plantation using UV-Vis Spectrophotometry Method Bowo Eko Cahyono; Winda Arif Febrayanti; Misto Misto
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 19, No 3 (2022): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

ABSTRACT- The increasing demand for high-quality coffee has led to making various tests to guarantee the quality of coffee to be accepted in the market. This study aimed to know the caffeine content in Robusta Luwak coffee roasted at different temperatures. The coffee used in this study is pure and mixed with rice. This study was conducted using various roasting temperatures, namely 190⁰C and 240⁰C. The additional material combined with the coffee is rice with mass fractions of 10%, 20%, 30%, 40%, and 50%. The absorbance value of caffeine in the sample is measured in the wavelength of the maximum absorbance of pure caffeine solution, 273 nm. The results showed that pure Robusta Luwak coffee with roasting temperatures of 190⁰C and 240⁰C had caffeine content of 1.10% and 0.94%, respectively. In mixed Robusta Luwak coffee, the highest caffeine content was at 190⁰C with a caffeine content of 0.89% in the composite material mass fraction of 10%, and the lowest caffeine content was at 240˚C with a mass fraction of 50% mixed material that had a caffeine content of 0.31%. In the serving dose, those two samples showed that the caffeine content was laid in the safe interval according to SNI and FDA standards.KEYWORDS: caffeine; robusta Luwak coffee; temperature; wavelength.

Co-Authors A Arkundato A. Arkundato, A. Agung Tjahjo Nugroho Alex Taufiqurrohman Zain Arry Y. Nurhayati Arry Y. Nurhayati, Arry Y. Arry Yuariatun Nurhayati Artoto Arkundato Bowo Eko Cahyono Busroni Busroni Dewi Ulul Azmi Digdo Listyadi, Digdo Endhah Purwandari Gaguk Jatisukamto Hadi Paramu Hardianto Hardianto Hary Sutjahjono Haryono Haryono Herry Setyawan Holili Nur Arivah Hutamia, Diah Meirendi I. R. Widayanti I.R. Widayanti, I.R. Imam Rofii Imam Rofi’i Intan Hardiatama Ismia Khilmi Fauzia Iwan Sugihartono Lestari, N P Linggar Ayu Octaviani Maulana, Bima Wahyu Maylani Lucky Mukarromah, Luluk Mutiara Garnet R.A Mutmainnah, Mutmainnah Nasrul Ilminnafik Nikmah, Tia Frida Khoirun Nindha Ayu Berlianti Noer Rimafatin Nur Inna Alfianinda Nurhayati, Arry Yuariatun Purwandari, E R Rofiatun Rofi'i, Imam Rofiatun Rofiatun Rofiatun, R Rofi’i, Imam Rofy Fazra Gumay Rusgianto Rusgianto Siswanto Siswanto Siswanto Siswanto Supriyadi Supriyadi Sutisna Sutisna Tri Mulyono Tri Mulyono Tri Mulyono Wenny Maulina Winda Arif Febrayanti Yuda Cahyoargo Hariadi Yulia Hartanti

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