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All Journal Indonesian Journal of Forestry Research JTERA (Jurnal Teknologi Rekayasa) Islamic Management: Jurnal Manajemen Pendidikan Islam Jurnal Kesehatan Prima Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Jurnal Kesehatan Jurnal Sehat Mandiri Jurnal Riset Kesehatan Poltekkes Depkes Bandung INDONESIAN JOURNAL OF MEDICAL LABORATORY SCIENCE AND TECHNOLOGY JIPIS Jurnal Ranah Komunikasi (JRK) Tsamratul Fikri (TF) Journal of Management and Administration Provision Current Biomedicine Mukhtabar: Journal of Medical Laboratory Technology Jurnal Kesehatan Siliwangi Jurnal Gizi dan Dietetik Journal of Professional Elementary Education Media Penelitian dan Pengembangan Kesehatan Jurnal Inovasi Bahan Lokal dan Pemberdayaan Masyarakat Journal of Applied Science and Advanced Engineering Almikanika
Mamat Rahmat
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Journal : Almikanika

 1 
RANCANG BANGUN 4 DOF (DEGREE OF FREEDOM) UNDERWATER REMOTELY OPERATED VEHICLE (ROV) Rachmansyah, Yoki; Rahmat, Mamat; Ahmad, Anton Royanto; Nuraini, Aisyah Iadha
ALMIKANIKA Vol 1 No 1 (2019): Januari
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/almikanika.v1i1.2008

Abstract

In this research, the underwater robot designed is a type of mini Remotely Operated Vehicle (ROV) based on the Arduino Uno Atmega 328A microcontroller. This research was aimed to make a robot underwater or ROV and test its performance in water. This research was conducted to determine the system of tightness in the ROV by using a body that was used as a cover for each component in the ROV and tested its movement in the water. The design of mini ROVs is integrated in several design processes, namely planning the calculation of each component selection used by ROV, designing mechanical construction, designing electronic construction, and making integration of the entire design process. The results of this integration are in the form of a physical form of mini ROV, electronic systems, and graphical interface programs. The designed robot is an underwater robot that can move in water with the X, Y and Z axes. The ROV robot is made with a total dimension of 38 cm in length, 21 cm in width, and 22 cm in height. The body of the ROV is made using a base material from a PVC pipe that each gap is lined with a seal so that the ROV can be maintained properly. In the ROV movement system, use 2 propeller leaves to go forward and backward and 2 propeller leaves to drown or raise the ROV.
DESAIN KONSTRUKSI ALAT PENDINGIN PORTABEL DI SEPEDA MOTOR Sopian, Yusuf; Rahmat, Mamat; Edi, Sutoyo
ALMIKANIKA Vol 3 No 1 (2021): Januari
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/almikanika.v3i1.2220

Abstract

The number of motorbike riders who modify their motorbikes uses a box, giving rise to the idea of modifying the box as a beverage cooler box. Modification of the box into a beverage cooler box affects the structure of the box, so it requires a bracket that matches the box. This study aims to determine the bracket strength when receiving loads 65.70 N. Obtain the value of the comparison of structural strength between theoretical calculations and CAD software simulation. Research methodology in this research method, researchers use quantitative methods. The things done in this research methodology, designing the design of a tool using CAD software, making a construction design, calculating the strength of the main part of the bracket when given a load are then theoretically compared with the strength of the material when given a load in simulation. The results of this study are known, the force that occurs in the main part of the bracket is 65.70 N. The calculation is theoretical approach deflection value on the main part of the bracket is 0.017 mm, bending moment in the main part of the bracket is 1.971 N / m, and voltage value bending on the main part of the bracket is 3.89 MPa, while the safety factor according to theoretical calculations is 2.72 simulation results using CAD software, namely inventor 2016 by using simulation stress analysis, the load that occurs in the main bracket is 65.70 N, displacement simulation results the maximum value is located at 0.0014 mm and the minimum value is at 0 mm, the maximum value and maximum voltage location (Von Misses) is at 7.146 Mpa and the minimum number is 0 MPa, while the Safety Factor is at a maximum of 15.
ANALISIS DISTRIBUSI UKURAN PARTIKEL TEH HIJAU HASIL EKSTRAKSI DENGAN METODE ULTRASONIC ASSISTED EXTRACTION (UAE) COLD BREW Khasanah, Nunung Dwi Nur; Rahmat, Mamat; Al-Kindi, Hablinur
ALMIKANIKA Vol 3 No 3 (2021): Juli
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/almikanika.v3i3.6710

Abstract

Ekstraksi teknik cold brew mulai berkembang dikalangan masyarakat yaitu menggunakan air bersuhu ruang yang didiamkan 6-18 jam. Metode ini digunakan untuk menyeduh kopi atau teh dengan kualitas yang baik tapi membutuhkan waktu yang cukup lama. Oleh karena itu perlu metode ekstraksi yang lebih cepat tanpa mengurangi kualitas produk yang dihasilkan. Salah satunya yaitu Ultrasonic assisted extraction (UAE) merupakan metode ekstraksi berbantu ultrasonik yang dapat menghasilkan ekstrak cukup baik pada suhu ruang dalam waktu yang lebih singkat bahkan mampu menghasilkan ukuran partikel dalam skala nanometer. Untuk itu, dilakukan penelitian ekstraksi teh hijau menggunakan metode UAE dalam temperatur rendah (dibawah suhu ruang). Tujuan Penelitian ini adalah mengetahui pengaruh suhu dan waktu ekstraksi terhadap ukuran partikel menggunakan UAE cold brew serta menentukan waktu dan suhu optimum pengekstraksi untuk menghasilkan berat terekstraksi tertinggi dan melakukan analisis distribusi ukuran partikel ekstrak yang dihasilkan. Proses UAE menggunakan air suhu (10, 15, 20 ºC) dan waktu (5, 10, 30 menit). Sebagai kontrol dilakukan ekstraksi maserasi cold brew menggunakan suhu ruang selama 12 jam didiamkan pada lemari pendingin  dan hot brew suhu 70ºC selama 10 menit. Analisis kepekatan warna dilakukan untuk menentukan sample yang akan diuji PSA. Hasil analisis kepekatan warna menunjukan ekstraksi UAE suhu 10ºC dengan variasi waktu 5,15,30 menit yang paling sesuai dengan karakteristik larutan teh hijau. Uji PSA menghasilkan ukuran paling kecil pada suhu 10ºC selama 30 menit dengan rata-rata ukuran 293.64 nm. Waktu dan suhu optimum untuk menghasilkan berat terekstraaksi terbanyak pada suhu 20ºC 30 menit sebesar 0,82 gram dari 6 gram sample teh hijau. Hasil ini menunjukan ekstraksi UAE dapat mempersingkat waktu, meningkatkan berat terekstraksi dan menghasilkan ukuran nanometer.Kata kunci :  Cold Brew; Ekstraksi; PSA; Teh Hijau; UAE ABSTRACT The extraction of cold brew techniques has begun to develop among the community, by using room temperature water that is left to rest for 6-18 hours. This method is used to brew coffee or tea with good quality but it takes a long time. Therefore, it needs a faster extraction method without reducing the quality of the product produced. One of them is Ultrasonic assisted extraction (UAE) which is an ultrasonic-assisted extraction method that can produce extracts quite well at room temperature in a shorter time and is even able to produce particle sizes on the nanometer scale. For this reason, a research on green tea extraction was carried out using the UAE method at low temperature (below room temperature). The purpose of this study is to determine the effect of temperature and extraction time on particle size using UAE cold brew and to determine the optimum extraction time and temperature to produce the highest extracted weight and analyze the particle size distribution of the extracts. The UAE process uses water temperature (10, 15, 20 ºC) and time (5, 10, 30 minutes). As a control, the cold brew maceration extraction was carried out using room temperature for 12 hours, left in the refrigerator then hot brew at 70ºC for 10 minutes. Color density analysis is carried out to determine the sample to be tested for PSA. The results of the color density analysis showed that the UAE extraction temperature was 10ºC with a time variation of 5.15.30 minutes which was the most suitable with the characteristics of the green tea solution. The PSA test produced the smallest size at 10ºC for 30 minutes with an average size of 293.64 nm. The optimum time and temperature to produce the most extracted weight were at 20ºC 30 minutes at 0.82 grams from 6 grams of green tea samples. These results showed that the UAE extraction can shorten the time, increase the weight extracted and produce a nanometer size.Keywords : Cold Brew; Extraction; PSA; Green tea; UAE
RANCANG BANGUN DAN UJI KINERJA BARBLE HORN MESIN ULTRASONIC ASSISTED STERILIZATION Faizal, Muhamad Nur; Rahmat, Mamat; Sutisna, Setya Permana
ALMIKANIKA Vol 3 No 3 (2021): Juli
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/almikanika.v3i3.6716

Abstract

ABSTRAK Barble horn atau tanduk ultrasonik merupakan batang logam yang berfungsi sebagai media penghantar energi atau penambah amplitudo perpindahan osilasi yang bersumber dari ultrasonic transduser. Barble horn menggunakan material Stainless steel 316L yang memiliki sifat ketahanan karat yang cukup tinggi. Oleh karenanya, perlu dilakukan penelitian untuk merancang dan mengukur keluaran frekuensi yang selaras dengan ultrasonic transduser. Tahapan-tahapan yang dilakukan dalam penelitian meliputi studi literatur, desain barble horn dengan software inventor, manufaktur dan pengukuran frek uensi. Barble horn yang telah dimanufaktur memiliki dimensi í˜30mm, panjang 520mm, dan jarak antar barble 30mm. Hasil pengukuran barble horn yang didapatkan memiliki akurasi 99,90% pada ketebalan ring2,3mm dengan frekuensi 41,62kHz. Pengaruh yang terjadi dari variasi ukuran ring pada barble horn terhadap keluaran frekuensi adalah semakin berkurangnya ketebalan ring maka semakin besar nilai keluaran frekuensi yang dihasilkan oleh barble horn.Kata kunci :  Barble horn; Frekuensi; Rancang bangun ABSTRACT Barble horn (ultrasonic horn) is a metal rod that serves as an energy delivery medium or an oscillating displacement amplitude enhancer sourced from ultrasonic transducer. Barble horn uses 316 L Stainless steel material which has high corrosion resistance. Therefore, research needs to be carried out to design and measure frequency outputs that are aligned with ultrasonic transducers. The stages carried out in the study include literature study, design barble horn with software inventor, manufacturing and frequency measurement. The manufactured barble horn has dimensions í˜30mm, length 520 mm, anddistance of barble 30 mm. The barble horn meassurement result have obtained an accuracy of 99.90% in thickness ring 2,3 mm with a frequency of 41.62kHz. The effect that occurs from the ring size variation on barble horn to the output frequency is the reduced thickness of the ring then the greater it is the value of the frequency output produced by the barble horn.Keywords : Barble horn; Design; Frequency
Co-Authors Agus Sulaeman Alimuddin Unde, Alimuddin Amanah, Ninda Risti Andrafikar, Andrafikar Anton Royanto Ahmad Berlian, Selpia Dandi Sanjaya Dermawan, Asep Durachim, Adang Dwitantika, Bryan Dzil Ikrom, Fadhli Edi, Sutoyo Elfrianto, Kevin Fadhli Dzil Ikrom, Fadhli Dzil Fahrudin, Ade Faisal, Ardian Faizal, Muhamad Nur Faried, Muhamad Fathiasari, Fariha Fauziyah, Raden Roro Nur Fauziyah, Roro Nur Feisyal Rinaldi, Sonny Firdaus, Fahdina Fred Agung Suprihartono, Fred Agung Ghaisani, Syifa Marha Ghassani, R Wulandari gumilar, mulus Hablinur Alkindi Hafied Cangara, Hafied Hardi, Zon Hastuti, Widi Hayati, Eem Iis Kurniati Ilmi Sufa, Hafizah Isdiany, Nitta Judiono Judiono Kamaruddin, Imran Kawaitouw, Leberina Khasanah, Nunung Dwi Nur Kusmawan, Rudi Maemunah, Iin MAHMUDAH, UMMI Maryati Dewi, Maryati Mohamad Erihadiana, Mohamad Mona Fitria Mufidah, Zahra Muhamad Iqbal Muhammad Ridwan Mulia, Yuliansyah Sundara Najiyyah, Amalia Nur Nidianti, Della Nina Marliana, Nina Noriko Sato Nur Fitriani, Melia Nur Indra, Asep Iin Nuraini, Aisyah Iadha Nurdianto, Gian Nurhakim, Haditsa Qurani Nurrohman Nurrohman Purnawan, Asep Iwan Pusparini Pusparini Rachmansyah, Yoki Ridwanna, Surya Risa Rahmawati, Risa rohayati rohayati Rohili, Ilyas Rohmah, Andini Aulia Roy Waluyo Ruswandi, Irwan Saleky, Yohannes Willihelm Setya Permana Sutisna Setyawan, Gigih Bayu Shah, Syed Humayon Sholihah, Siti Nurbayani Simabur, Lisda Ariani Sopian, Yusuf Subagio, Rohmad Sufa, Hafizah Ilmi Sulaeman Sulaeman Sumarjo, Dwi Nur Ida Islamiati Suparman Suparman Sutoyo, Edi Syaindi, Amanda Afifah Takahiro F. Tika Hafzara Siregar Tsania, Nanda Umi Mahmudah Widartika Widartika Wiratmoko, Aris Wiryanti, Wiwin Witri Priawantiputri Zuri Rismiarti