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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
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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Chlorogenic Acid Content of Local Robusta Coffee at Variations of Roasting Temperature Misto, M; Lestari, N P; Purwandari, E
Jurnal Pendidikan Fisika Indonesia Vol 18, No 1 (2022)
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v18i1.27889

Abstract

The roasting process has become the most necessary post-harvest handling process to be awarded in controlling coffee quality. In this research, the effect of roasting temperature has been investigated to the chlorogenic acid content on pure robusta coffee of local varieties and its mixture with soybeans as a parameter to control the quality. The temperature of roasting had variated at 195°C, 215°C, 225°C, 230°C, and 240°C. The chlorogenic acid contents have been obtained based on their maximum absorbances measured by a UV-Vis spectrophotometer at 290 nm wavelength range. The increase in roasting temperature reduces the chlorogenic acid levels because some have turned into melanoidin compounds. To increase the weight of Robusta coffee and change the taste of coffee, soybeans have been added as a coffee mixture. The results of the study were then extended to the observation of coffee quality on the content of chlorogenic acid it produces. The addition of soybeans by 10% can increase the chlorogenic acid content at a roasting temperature of 230°C around 5.12%, and there will be a decrease when the temperature is lowered. The addition of soybeans with a mass fraction of 20% of the total amount of coffee has increased the absorbance due to other antioxidant substances from the soybeans. The results of this study are expected to add insight to the public about the temperature required for the roasting process to obtain quality coffee with chlorogenic acid content that is still present after the roasting process.                                                                                         
PEMANFAATAN LIMBAH PRODUKSI ARANG KAYU MENJADI BRIKET ARANG SEBAGAI UPAYA PENINGKATAN KEBERDAYAAN EKONOMI PEDESAAN Digdo Listyadi Setyawan; Nasrul Ilminnafik; Hary Sutjahjono; Intan Hardiatama; Misto Misto
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 3 (2023): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i3.16607

Abstract

ABSTRAKDi Dusun Gunung Giri, yang  terletak di Desa Wonosari, Kecamatan Grujugan, Kabupaten Bondowoso,  terdapat sejumlah UMKM pembuat arang kayu. Arang kayu  biasanya digolongkan menjadi tiga A, B dan C.  Harga arang kayu untuk golongan A  adalah Rp. 2.700 per kg, golongan B adalah Rp. 500 per kg , sedangkan untuk golongan C biasanya dibuang.  Sebetulnya produk arang golongan B dan C dapat diolah lebih lanjut menjadi bentuk briket sehingga  memiliki nilai ekonomis yang lebih tinggi. Program Pengabdian kepada Masyarakat (PKM) dilaksanakan dengan menggunkan metode penyuluhan dan  pelatihan kepada mitra yang berjmlah sekitar 15 orang pengrajin arang yang pada akhir program dilakukan evaluasi berupa kuisioner dan berkonsultasi berkelanjutan untuk pengambangan produk arang kayu yaitu menjadikan arang golongan B dan C menjadi briket arang. Hasil kegiatan pengabdian masyarakat menunjukkan bahwa telah terjadi peningkatan softskill SDM  pengrajin  sebesar lebih dari 80 % dan peningkatan nilai ekonomis dari pembuatan beriket arang sebesar 200 %. Kata kunci: briket; arang kayu; pelatihan; penyuluhan. ABSTRACTIn Gunung Giri Hamlet, which is located in Wonosari Village, Grujugan District, Bondowoso Regency, there are a number of SMEs producing wood charcoal. Wood charcoal is usually classified into three A, B and C. The price of wood charcoal for class A is Rp. 2,700 per kg, group B is Rp. 500 per kg, while for group C it is usually discarded. Actually, the products of group B and C charcoal can be further processed into briquettes so that they have a higher economic value. The Community Service Program (PKM) was carried out using counseling and training methods for approximately 15 partners who were charcoal craftsmen who at the end of the program were evaluated in the form of questionnaires and ongoing consultations for the development of wood charcoal products, namely turning class B and C charcoal into charcoal briquettes. The results of the community service activities show that there has been an increase in the soft skills of craftsmen's human resources by more than 80% and an increase in the economic value of making charcoal beriket by 200%. Keywords: briquettes; wood charcoal; training; counseling.
Bioelectricity Generation From Single-Chamber Microbial Fuel Cells With Various Local Soil Media and Green Bean Sprouts as Nutrient Tri Mulyono; Misto Misto; Busroni Busroni; Siswanto Siswanto
International Journal of Renewable Energy Development Vol 9, No 3 (2020): October 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2020.30145

Abstract

In this experiment, seven single-chamber microbial fuel cells (MFCs) were made and filled with various types of local agricultural soil and sediments found in irrigation channels, which were mixed with glucose and green bean sprouts mashed as nutrients for microbial survival. MFC electric power was measured every day for 35 days. Every time low electric power indicated weak microbial activity, green bean sprouts were added. The highest electric power of 118 µW (23.4 mW/m2) was observed in fuel cells filled with agricultural land planted with rice. Power density reached the range of 120–140 mW/m2, whereas the incubation time showed a maximum of 35 days. This study found that adding green bean sprouts can increase the length of the MFC cycle and strengthen the generated power up to 122 mW. 
KONVERSI PERTANIAN LADANG MENJADI TANAMAN KELAPA SAWIT DI SEKADAU HULU Maylani Lucky; Misto Misto
Agros Journal of Agriculture Science Vol 25, No 2 (2023): edisi April
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v25i2.2927

Abstract

This study aims to describe the conversion of agricultural land to oil palm plantations in Sekonau Village, Sekadau Hulu District and to describe, identify and explain the factors that encourage land conversion to oil palm plantations. The research was conducted in Sekonau Village, Sekadau Hulu District, Sekadau District. The research will be carried out starting in December 2022. The tools and materials used in this research are stationery, cameras, and questionnaires as tools for gathering information or data. Data collection was carried out through interviews using a list of questions as an interview and observation guide. The shifting of the function of dryland agriculture to oil palm plantations was caused by a decrease in rice production and also a decrease in the quality of lowland agricultural land. The impact of the conversion of plantation agricultural land into community oil palm plantations in Sekonau Village on the economic activities of the community has quite a positive impact, but the community has not felt its maximum effect, this is because the oil palm planted by the community has not produced much.INTISARIPenelitian ini bertujuan mendeskripsikan alih fungsi lahan pertanian ladang menjadi perkebunan kelapa sawit di Desa Sekonau Kecamatan Sekadau Hulu dan menguraikan, mengidentifikasi dan menjelaskan faktor-faktor yang mendorong terjadinya alih fungsi lahan menjadi perkebunan kelapa sawit. Penelitian dilakukan di Desa Sekonau, Kecamatan Sekadau Hulu, Kabupaten Sekadau. Penelitian dilaksanakan dari bulan Desember 2022. Alat dan bahan digunakan dalam penelitian ini adalah alat tulis menulis, kamera, dan daftar pertanyaan sebagai alat bantu pengumpulan informasi atau data. Pengumpulan data dilakukan melalui wawancara menggunakan daftar pertanyaan sebagai panduan wawancara dan observasi. Alih fungsi pertanian ladang menjadi lahan tanaman kelapa sawit disebabkan oleh penurunan hasil produksi padi dan juga menurunnya kualitas lahan pertanian ladang. Dampak alih fungsi lahan pertanian ladang menjadi perkebunan kelapa sawit masyarakat di Desa Sekonau pada aktivitas ekonomi masyarakat cukup berdampak positif, namun masih belum maksimal dirasakan pengaruhnya oleh masyarakat, hal ini dikarenakan memang tanaman sawit yang masyarakat tanam belum bagitu menghasilkan.
MODEL PEMBELAJARAN DAN MINAT BELAJAR TERHADAP HASIL BELAJAR ILMU PENGETAHUAN SOSIAL Misto Misto
Herodotus: Jurnal Pendidikan IPS Vol 2, No 2 (2019): Herodotus: Jurnal Pendidikan IPS
Publisher : Universitas Indraprasta PGRI, Jakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/herodotus.v2i2.7250

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui seberapa besar pengaruh model pembelajaran dan minat belajar terhadap hasil belajar ilmu pengetahuan sosial siswa SMP Negeri di Jakarta Timur. Metode penelitian yang digunakan dalam penelitian ini adalah metode eksperimen dengan menyediakan berbagai jenis perlakuan dalam dua kelompok belajar siswa. Berdasarkan analisis data dapat disimpulkan bahwa: (1) Ada pengaruh yang signifikan dari model pembelajaran terhadap hasil belajar siswa SMP Negeri di Jakarta Timur. Ini dibuktikan dengan nilai Sig = 0,041 < 0,05 dan Fhitung = 4,391. Ini menunjukkan bahwa model pembelajaran Jigsaw lebih baik digunakan daripada model pembelajaran klasik dalam meningkatkan hasil belajar ilmu pengetahuan sosial. (2) Ada pengaruh yang signifikan minat belajar terhadap hasil belajar ilmu pengetahuan sosial siswa SMP Negeri di Jakarta Timur. Ini dibuktikan dengan nilai Sig = 0,037 < 0,05 dan Fhitung = 4,560. Ini menunjukkan bahwa minat belajar yang tinggi lebih baik daripada minat belajar yang rendah dalam meningkatkan hasil belajar ilmu sosial siswa. (3) Ada pengaruh interaktif yang signifikan model pembelajaran dan minat belajar terhadap hasil belajar ilmu pengetahuan sosial siswa SMP Negeri di Jakarta Timur. Ini dibuktikan dengan nilai Sig = 0,001 < 0,05 dan Fhitung = 11,668
Improving the Economy of the Home Furniture Industry in Sugerkidul Village - Jember through Appropriate Technology Misto; Endhah Purwandari; Artoto Arkundato; Wenny Maulina; Arry Y. Nurhayati
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 1 No. 1 (2023): Mei
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v1i1.361

Abstract

Furniture (chairs, beds, sideboards and so on) are items needed by every household that potential to be cultivated as a livelihood. Some of the basic materials for making furniture products are available locally (village) and some come from the city. Techniques for making furniture products such as how to make wooden frames, cut furniture cloth or leather, sew furniture fabrics, and the process of assembling and combining them into a furniture product must be owned by furniture workers, in order to open a furniture business. In addition to the technical skills that must be possessed, the required equipment such as tools, sewing machines and so on must also be owned for this furniture business to be successful. Some of the difficulties of Jelbuk furniture entrepreneurs are that they do not have enough skills to sew and do not have a sewing machine. If there is sewing work, it is always given to another party whose existence is 20 km from Jelbuk. This is what makes Jelbuk entrepreneurs less economically empowered. Therefore, the purpose of carrying out this activity is to provide guidance on sewing techniques and procurement of sewing machines as an alternative solution for these furniture entrepreneurs. This activity was carried out in several stages, namely 1) procuring sewing machines that were tailored to the needs of making a furniture product, 2) providing guidance on sewing techniques, and 3) training on techniques for making fashion furniture products according to consumer tastes. Guidance on sewing techniques is given starting from getting to know the sewing machine and its characteristics as well as sewing guidance to make a simple product to the details. The results of the community service activities are enough to help improve the ability of sewing techniques so that all pron products can be done at their own place without having to be given to other parties, so that the completion is faster and more cost efficient. The guidance process is still given for 3 months until it is completely independent. The ability of furniture entrepreneurs increases, the settlement process is faster, the number of consumers increases and will ultimately increase the income of furniture entrepreneurs in Suger Kidul Village, Kec. Jelbuk, Kab. Jember.
Measuring The Amount Of Ammonia Gas In Cattle Using The MQ137 Sensor In Rawan Village, Mayang District, And Member District With The Goal Of Raising Public Health Standards Misto; Tri Mulyono; Imam Rofi’i; Arry Yuariatun Nurhayati; Yuda Cahyoargo Hariadi; Linggar Ayu Octaviani
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 2 No. 1 (2024): Mei
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v2i1.757

Abstract

The majority of the farmers in Pringtali Hamlet, Mayang Village, Jember Regency, are also cattle breeders. Cattle breeders make up the majority of farmers. They construct basic cow enclosures; the majority are joined to the home, while others are independent. For the two of them, the cage's quality does not match the standards for cleanliness. Even in cages attached to the home, the smell of cow poo can be detected up to three meters outside the cage and within the main house. Ammonia is often the gas that is released from either liquid or solid cow manure. This gas can have some negative effects on health; in fact, it can irritate respiratory blood vessels in those 60 years of age and older. Because ammonia gas from cages has not been handled adequately, the living environment is contaminated. The goal of our service is to measure the threshold level of ammonia gas surrounding the cage (using the MQ-135 sensor) in order to ascertain whether the cage is ecologically friendly and healthy. Two cow pens one adjacent to a domestic main house in Pringtali Hamlet and the other from a separate traditional pen have had measurements taken. By monitoring liquid excrement drainage channels and promoting air circulation around the cage, the measurements seek to maintain the cleanliness of the cage environment and the management of ammonia gas content. Cage management so that the livestock community can improve the cleanliness of the living environment.
Determination of Sucrose Content in Sugarcane Liquids Through Angular Dispersion Angle Measurement Misto, M.; Mulyono, Tri; Cahyono, Bowo Eko
Jurnal ILMU DASAR Vol 20 No 2 (2019)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.885 KB) | DOI: 10.19184/jid.v20i2.8497

Abstract

In the sugar industry, it is important to measure the sucrose content of sugar cane so that an electronic system is needed for measurement. The system was employed an array photodiode as a sensor, red and green laser, operational amplifiers (opamp), an analog to digital converter from Arduino, and a computer. The main operation of the measurement system was conducted by the sensor and controller system in the computer. The controller was programmed with Basic program, a program that suitable for the device. The signal from array photodiode sensor is send to signal processing unit (opamp) and converted to digital signal by ADC. Then the digital code is countered by controller and displayed by monitor computer. Keywords: sugar content, array photodiode, Arduino.
The Application of Cows Rumen for Electricity Generation Through The Implementation of A Ceramic-Based Microbial Fuel Cell System Mulyono, Tri; Hutamia, Diah Meirendi; Rofi’i, Imam; Misto, M.; Nugroho, Agung Tjahjo; Hariadi, Yuda Cahyoargo
Jurnal ILMU DASAR Vol 25 No 1 (2024)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v25i1.44448

Abstract

The growth in population is not adequately matched by the corresponding increase in energy demand. The imperative for prioritizing the exploration of alternative energy sources that possess attributes of safety, affordability, and ample access to raw materials cannot be overstated. An energy source with significant potential is a microbial fuel cell (MFC)-based energy source. This study aims to investigate the utilization of cow rumen as a substrate and source of nutrition in the bioenergy system of microbial fuel cells (MFCs). The present study aims to investigate the impact of substrate concentration and bacterial incubation duration derived from bovine rumen bacteria on the attainment of optimal power density. The research employed a Dual Chamber Microbial Fuel Cell (MFC) device using a Proton Exchange Membrane (PEM) constructed from ceramic materials. Daily observations were conducted over a period of 30 days. The performance of MFC was assessed utilizing the polarization technique. The findings indicated that altering the proportion of bovine rumen bacterial substrates and the duration of bacterial incubation had an impact on the power density seen in the Microbial Fuel Cell (MFC) system. The optimal conditions were attained when the substrate concentration reached 3640 ppm and after 7 days, resulting in a maximum power density of 864 mW/m2.
Design and Construction of Electrical Energy Source Panel Based on Thermoelectric Generators on Mild Steel Galvalume Maulana, Bima Wahyu; Misto, M.; Arkundato, Artoto; Mulyono, Tri
Jurnal ILMU DASAR Vol 24 No 2 (2023)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v24i2.26255

Abstract

A thermoelectric generator (TEG) is a device that converts heat energy into electrical energy. The working principle of this device is based on Seebeck's law, namely this device will produce electrical energy if the cold side and hot side of this device have a temperature difference value of . This device can be used for generator panels whose heat source comes from the sun. The cold side of the TEG is conditioned by utilizing water fluid which is passed over the heatsink. The temperature difference between the hot and cold sides of the TEG generates an electric voltage through the Seebeck effect. The parameters observed in the research on electricity generation using this TEG are voltage, current, electric power, and the temperature difference between the hot and cold sides. The resulting parameter values are as follows; average voltage (0.5495 volts), average electric current strength of 0.04 A, average electric power (0.022 watts). mean temperature difference (16.006 oC). The largest average Seebeck coefficient is 0.0413 V/oC.
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