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All Journal JURNAL GIZI INDONESIA Waste Technology Jurnal Hortikultura Journal of Mechanical Engineering Science and Technology Spektra: Jurnal Fisika dan Aplikasinya Journal of Applied Food Technology PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Pengabdian Vokasi
Miskiyah & Wisn Agus Supriatna Somantri Miskiyah & Wisnu Broto Agus Supriatna Somantri
Prodi Elektro Fakultas Teknik Univ. Pancasila, Srengseng Sawah Jagakarsa, Jakarta, 12640
Aerospace Engineering Agriculture, Biological Sciences & Forestry Computer Science & IT Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Pengaruh Larutan Pulsing dalam Pengemasan dan Pengangkutan Bunga Mawar Potong Amiarsih, Dwi; -, Yulianingsih; Broto, Wisnu; -, Sjaifullah
Jurnal Hortikultura Vol 13, No 3 (2003): SEPTEMBER 2003
Publisher : Indonesian Center for Horticultural Research and Development

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Abstract

Penggunaan larutan pulsing bunga sebelum pengemasan dan pengangkutan sangat berguna untuk menggantikan sumber karbohidrat, melindungi tangkai bunga dari serangan mikroorganisme penyebab penyumbatan, menjaga kualitas bunga tetap prima, dan dapat memperpanjang masa kesegaran bunga setelah pengangkutan. Penelitian bertujuan mendapatkan larutan pulsing dalam pengemasan dan pengangkutan bunga mawar potong varietas kiss guna memperpanjang masa kesegaran setelah pengangkutan. Bunga mawar potong kiss dipanen di Sukabumi dengan tingkat kemekaran 0-10%, kemudian direndam dalam larutan pulsing (AgNO3 20 ppm + gula pasir 5% + asam sitrat 320 ppm selama 16 jam). Selanjutnya bunga mawar dikemas dalam wadah ( berisi masing-masing larutan holding; akuades dan dikemas kering) dan diletakkan dalam karton berukuran 78 x 20 x 8 cm berkapasitas 20 tangkai bunga mawar potong. Sebagai kontrol bunga tanpa direndam dalam larutan pulsing. Setelah bunga dikemas, kemudian diangkut dengan mobil pendingin (5o-10oC) dan tanpa pendingin (27o-30oC) selama 20 jam. Penelitian menggunakan rancangan acak lengkap dengan tiga ulangan. Hasil percobaan menunjukkan bahwa perlakuan pengemasan dengan akuades selama pengangkutan 20 jam merupakan perlakuan yang terbaik dengan masa kesegaran bunga mencapai 9 hari dan persentase kemekaran bunga mencapai 100%. Perlakuan tersebut dapat mempertahankan kualitas bunga tetap prima dan dapat memperpanjang masa kesegaran bunga setelah pengangkutan. Kata kunci: Mawar; Pengemasan; Larutan perendam; Suhu pengangkutan; Mempertahankan mutu ABSTRACT. Dipping the lower portion of flower stems in the solution containing sugar and germicides before packaging and transportation was to supply carbohydrate and prevented the plugging of flower stems by microbial growth. Furthermore, in was prolonged the periode of flowers vaselife and kept flower quality af- ter transportation. The objective of the study was to find out both of proper pulsing solution, packaging and transporta- tion to keep the prime quality of flower cut Rose c.v. Kiss. The flowers were harvested from the field when the flowers was at 0-10% bud opening stages and then they were pulsed with solution of AgNO3 20 ppm + sugar 5% + citric acid 320 ppm for 12 hours. Each the flower was placed in the vials containing aquades; holding solution) and put them in the boxes (78 x 20 x 8 cm) with capacity 20 inflorescences. All treated cut flowers were transported for 20 hours with carchamber with temperature of 5o-10oC and 27o-30oC. The experiment was arranged on a completely randomized de- sign with three replications. The results indicated that wet packaging with aquades during 20 hours transportation was the best treament which prolonged vaselife until 9 days and kept the enflorescence up to 100% bud opening. By ap- plying those treatment, the periode of flowers vaselife could be extended and quality after transportation could be maintained.
Rate of physical appearance changes on yellowness in salak during preservation in room storage Pangestika, Widia; Al-Baarri, Ahmad Ni’matullah; Legowo, Anang Mohamad; Hadipernata, Mulyana; Broto, Wisnu; Izzati, Laili
Jurnal Gizi Indonesia (The Indonesian Journal of Nutrition) Vol 9, No 1 (2020)
Publisher : Department of Nutrition Science, Faculty of Medicine, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jgi.9.1.68-72

Abstract

Background: Discoloration was one indicator of food damage including in fruits, since the change may be used as a quality measurement. Salak became one of the commodities that often experience the browning reaction that may change the color. Since the yellow was close to the consumer preference along the preservation in salak, this color should be notified and may be represented as polyphenol change. Objectives: The focus of this study was to determine the pattern of inhibition of browning reactions in salak using HIO.Methods: This research determined the color level of yellow using digital color meter of salak that was stored in room temperature in aseptic treatment for 12 days. Result: Discoloration appeared in salak and it was clearly determined the change since a week of storage. The rate of discoloration was able to be detected highly after one week of storage. Conclusion: The discoloration of yellow color and the rate of salak could be detected specifically based on the day of storage. This research may open the information for the consumer to predict the storage time of salak based on the appearance of yellow color.
SISTEM BOILER DENGAN SIMULASI PEMODELAN PID Wisnu Broto; Ane Prasetyowati R.
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Boiler atau ketel uap adalah suatu alat yang berfungsi untuk mengubah air dari fasa cairnya menjadi air fasa gas (steam) dengan menggunakan bahan bakar. Pengendali pada boiler berfungsi untuk mengendalikan Volume air (986.42 ft3), Tekanan Uap (1336 psi), dan Temperatur Uap (950 °F) pada boiler sesuai dengan setting point = 1. Jika tidak sesuai dengan Volume Air, Tekanan Uap, Temperatur yang dikehendaki (set point) sensor pada boiler akan memberi sinyal pada pengendali boiler. Secara otomatis boiler akan membuka dan mengalirkan air serta menaikkan kalor hasil pembakaran bahan bakar pada tangki untuk proses kembali. Sedangkan untuk pemodelan Proposional Integral Diferensial (PID) digunakanlah metode Zigler-Nichols, karena dari hasil simulasi dapat dibuktikan bahwa untuk Volume Air pemodelan dengan metode Zigler-Nichols didapatkan Rise TimeVol = 1,32 .10ˉ 3 sec dan Settling TimeVol = 1,76 sec lebih cepat dibanding dengan metode Quarter Decay-Ratio dengan Rise TimeVol = 1,32 .10ˉ2 sec dan Settling TimeVol = 3,13 sec. Untuk Tekanan pemodelan dengan metode Zigler-Nichols didapatkan Rise TimeTek = 0 sec dan Settling TimeTek = 1,52 sec lebih cepat dibanding dengan metode Quarter Decay-Ratio dengan Rise TimeTek = 0,144 sec dan Settling TimeTek = 2,91 sec. Dan untuk Temperatur pemodelan dengan metode Zigler-Nichols didapatkan Rise TimeTem = 2,85 .10−6 sec dan Settling TimeTem = 1,53 sec lebih cepat dibanding dengan metode Quarter Decay-Ratio dengan Rise TimeTem = 2,14 .103 sec dan Settling TimeTem = 3,13 sec. Kata kunci : Boiler, metode Zigler Nichols, metode Quarter Decay-Ratio, PID.
LOGIKA FUZZY PADA PROSES PELET PAKAN IKAN Agung Saputra; Wisnu Broto; Ainil Syafitri
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Sistem logika fuzzy pada proses pellet pakan ikan ini mempunyai 3 parameter masukan antara lain diameter, kekerasan, panjang dan mempunyai keluaran tunggal yaitu berat pellet pakan ikan. Dari masukan dan keluaran mempunyai tiga label linguistik pada setiap fungsi keanggotaannya, dan mempunyai if-then aturan yang digunakan di sistem fuzzy ini. Algoritma fuzzy dapat digunakan sebagai algoritma untuk menentukan tingkatan dari ketebalan, kekerasan, dan diameter dari suatu pellet pakan ikan. Dalam penelitian ini digunakan model MAMDANI untuk mengontrol berat pelet dari setiap perubahan ketiga parameter pellet. Fungsi keanggotaan masukan dari parameter tersebut menentukan tingkatan dari penyimpangan berat pellet dari nilai nominal pellet pakan ikan. Hasil berat tablet menggunakan logika fuzzy dengan pendekatan rule-based dan common sense mempunyai kestabilan rata-rata sebesar 99.650 %. Pada proses produksi pencetakkan pellet pakan ikan yang menggunakan logika fuzzy dengan model MAMDANI hanya terjadi deviasi : 106 mg (max), 100 mg (min), 100 mg (standard), sehingga diperoleh rata-rata 100.283 mg + 0.047 %. Kata kunci : fuzzy, produksi, pellet, MATLAB.
ANALISA REMOTE SENSISNG MEMPREDIKSI KEMAMPUAN SUMBER DAYA LISTRIK ENERGI WIND OFFSHORE DENGAN DATA SATELIT MODIS AQUA DI DAERAH PANTAI SELATAN JAWA Ane Prasetyowati R; Wisnu Broto
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

Penelitian Analisa Remote Sensing Untuk Memprediksi Kemampuan Sumber Daya Listrik Dari Energi Wind Offshore Dengan Memanfaatkan Data Satelit MODIS AQUA di daerah Pantai Selatan Jawa, akan dilakukan analisis data dari LANSAT, tentang data kecepatan angin yang dikhususkan di pantai selatan Jawa, saat ini kecepatan wind offhshore di daerah tersebut mencapai 3 – 9 m/s, tetapi kondisi tersebut akan berbeda untuk setiap bulannya, kondisi wind offshore di Indonesia khususnya di pantai utara Jawa, pada bulan-bulan tertentu mengalami perubahan yang sangat drastis, artinya kondisi kecepatan wind offshore tidak stabil, dan pada bulan-bulan tertentu pula kecepatan angin dapat mencapai lebih dari 18 m/s, bila kondisi ini terjadi akan mengakibatkan kerusakan pada peralatan pembangkit. Melihat kondisi seperti tersebut, pada penelitian ini akan dibuat data prediksi kemampuan energi listrik yang dapat dihasilkan melalui data pengamatan oleh Satelit. Penelitian ini memiliki tujuan khusus yaitu membuat database dengan data prediksi dinamis untuk memetakan kemampuan daya maksimal yang dihasilkan dari energi wind offshore, memetakan posisi pembangkit tenaga wind offshoreyang tepat sehingga dapat menghasilkan daya listrik maksimal, serta membuat data rekomendasi jenis pembangkit wind offshore yang baik untuk disetiap titik-titik sampel di daerah pantai Selatan Jawa. Hasil penelitian ini, nantinya diharapkan menjadi pusat informasi berupa database dari potensi energi wind offshore yang dihasilkan secara dinamis, artinya setiap perubahan data wind offshore hasil pengamatan Satelit MODIS AQUA memberikan perubahan pada prediksi data kemampuan energi listrik yang dapat dihasilkan, dengan proyeksi data ini dan titik-titik dimana terdapat angin yang maksimal, diharapkan energi wind offshore mampu menghasilkan energi listrik dengan daya yang maksimal. Kata Kunci :Wind Offshore, Satelit MODIS AQUA,Data Prediksi.
LINEAR GENERATOR PROTOTYPE WITH VERTICAL CONFIGURATION OF SEA WAVE POWER PLANT Prasetyowati, Ane; Broto, Wisnu; Suryaningsih, Noor
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 3 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 3, December 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.063.05

Abstract

There are three types of potential energy sources in the sea: ocean wave energy, tidal energy, and ocean heat energy. Ocean wave energy is a source of considerable energy. Sea waves are an up and down movement of seawater where the energy of sea waves is generated through the effect of air pressure movement due to fluctuations in ocean wave movements. The Ocean Wave Power Plant can use ocean wave energy to convert it into electrical energy. A linear generator is a device that can convert the mechanical energy of linear motion into electrical energy. The application of the ocean wave energy conversion technology, a linear generator system is an electrical machine that functions to convert the mechanical energy of linear motion into electrical energy using the principle of electromagnetic induction. Wave Energy Converter (WEC) technology has been developed with various methods. From the various existing concepts and designs, in general, WEC technology can be classified into three main types, namely Attenuator (horizontal configuration), Point Absorber (linear configuration), Terminator (damping configuration).
WORKING ANALYSIS OF SPACE TIME TRELLIS CODE ON WIFI MIMO(2X2) SYSTEM OFDM Broto, Wisnu; Suryaningsih, Noor; Mahendra, Adhi
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 3 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 3, December 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.063.03

Abstract

Wireless communication nowadays requires a system with reliable performance, efficient use of bandwidth, efficient power, and better coverage because it is in line with human needs for applications that require high and fast data rates. One of the concepts and methods to meet these needs is using an antenna technique with many transmitters and receivers or often called Multiple Input Multiple Output (MIMO), by adding a strategy at the time of delivery, namely the Space-Time Coding (STC) technique. In addition, the application of Orthogonal Frequency Division Multiplexing (OFDM) on MIMO-STC will more efficiently use bandwidth. The Space-Time Trellis Code (STTC) method is one of the diverse techniques in sending data with complex coding so that coding reinforcement is achieved and applied to the OFDM MIMO system. It is hoped that a system with reliable performance can be achieved. The simulation that is carried out presents the STTC and OFDM schemes on multi antennas (2 transmitters x 2 receivers) with a Combiner and Maximum Likelihood Sequence Estimator (MLSE) detection algorithm on the receiver. It is to get the quality of the sending signal in the performance analysis of Bit Error Rate (BER) with Signal to Noise Ratio (SNR). The simulation results are shown by modulation with M-array Phase Shift Keying (MPSK) and the number of symbols sent by giving different input parameter values. The results show that the number of carriers and the size of the Fast Fourier Transform (FFT) is large, and the modulation type with a small constellation produces a low BER and throughput at high SNR.
DETECTION AND MONITORING SYSTEM ON THE PACKAGE RECEIVING BOX Sasmojo, Duta Widhya; Broto, Wisnu; Renaldi , Doni Chesa
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 3 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 3, December 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.063.02

Abstract

The package delivery system during this pandemic period require concerned health protocols. Receiving packages sometimes needs to be done even though there is no recipient. Here, the box for receiving goods has an important role. The goods receiving box must have security and ensure that the goods are received/placed in the box. In this case, it is necessary to detect the presence of objects in the box using a weight sensor, and a box locking motor is also needed. A push-button is needed when the package items are put into the box. The process of this activity can be monitored directly with the help of the Blynk application from a smartphone. The tests are carried out, and the push button signals to open the box. The weight sensor detects weight changes. The Blynk application will inform the smartphone that the object has been placed in the box from the weight change, and the system will lock the box again. The detection and monitoring system for goods on the box can work well.
Implementasi Teknologi Tepat Guna Mesin Pemarut Jahe dan Expired Date Pada Proses Produksi Jahe Instan Sebagai Produk Unggulan Kabupaten Pemalang Broto, Wisnu; Arifan, Fahmi; Supriyo, Edy; Kartikasari, Nanik; Prasetyo, Alif Nur Fauzi; Utami, Palupi Diah
Jurnal Pengabdian Vokasi Vol 3, No 2 (2023): November 2023
Publisher : Sekolah Vokasi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpv.2023.20692

Abstract

Kelareyan Village, Pemalang Regency is topographically a lowland area which is also the economic traffic of Pemalang district, so it is very suitable for agricultural and trading businesses. Kelareyan Village trading commodities are people's daily commodities such as food, beverages, clothing, medicine, and so on. With the position of the region, Kelareyan Village has enormous economic potential from the agricultural and trade sectors. The potential in question is the existence of a herbal beverage production center. In Kelareyan Village, there is a Kelareyan Independent Farmer Business Group (KUT) owned by Mr. Eko by producing instant ginger drinks from ginger-based ingredients. The problem faced by the Independent Farmer Business Group (KUT) is the contraction for ginger grinding with simple manual tools, causing the size of fine ginger to be not uniform so that it is less optimal in quality and quantity of production and other problems, namely the expired date printer that is still simple (stampel) so that it can still be quickly lost on the packaging. Therefore, the community service program that will be implemented focuses on socialization innovations and training on the use of ginger shredding machines and automatic expired date machines. In addition, the program was made with the aim that the Kelareyan Independent Farmer Business Group (KUT) can be more optimal in producinginstant ginger drinks.
Photocatalytic Scheme with External Magnetic Field on Coffee Waste in Hydrogen Production Alphanoda, Abid Fahreza; Prasetyo, Eko; Broto, Wisnu
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i22023p181

Abstract

Photocatalytic is considered a deadlock-breaking technology for renewable energy and lowering environmental pollutants. Photocatalytic efficiency efforts are improved by activating the photocatalyst to introduce an external magnetic field. This review highlights recent breakthroughs by comparing original coffee waste, activation of coffee waste with the addition of catalysts, and manipulation of spin electrons by applying external magnets. Characterization was done with FTIR to look at chemical bonds, UV-Vis with Tauc's Relation approach to measure bandgap, and material morphology using SEM EDX. The increase in photocatalyst activation aligns with the decrease in bandgap value. The rate of decline in bandgap is in line with the rate of acceleration of hydrogen production. Adding an external magnetic increases hydrogen production up to 1.5 times greater than the original photocatalytic.
Co-Authors Agung Saputra Ainil Syafitri Al-Baarri, Ahmad Ni'matullah Alphanoda, Abid Fahreza Anang M Legowo Ane Prasetyowati R Ane Prasetyowati R. Ayuningtyas, Inggrit Pangestu Dwi Amiarsih Edy Supriyo Fahmi Arifan Hadipernata, Mulyana Heni Pujiastuti Kamila, Nadya Permata Kartikasari, Nanik Laili Izzati Mahendra, Adhi Maulidinoor, Farah Salsabillah Pangestika, Widia Prasetyo, Alif Nur Fauzi Prasetyowati, Ane Renaldi , Doni Chesa Sasmojo, Duta Widhya Sjaifullah - Subagyo, Meylinda Dita Anggi Suryaningsih, Noor Utami, Palupi Diah Yulianingsih -