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All Journal BERKALA FISIKA Jurnal Teknik ITS Komunikasi Fisika Indonesia Program Kreativitas Mahasiswa - Penelitian Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Pendidikan Fisika dan Teknologi Indonesian Physical Review Jurnal Pengabdian UNDIKMA Pillar of Physics: Jurnal Berkala Ilmiah Fisika Jurnal Pusat Inovasi Masyarakat Journal of Fibers and Polymer Composites
Rima Fitria Adiati
Department Of Physics, Faculty Of Mathematics And Natural Sciences, IPB University, Jl. Meranti Kampus IPB Dramaga, Bogor 16680
Religion Agriculture, Biological Sciences & Forestry Humanities Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Other

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PENGARUH DISPERSANT TERHADAP NANOPARTIKEL TiO2 SEBAGAI OPTIMASI DIRT-FREE PAINT Adiati, Rima Fitria; Nurfadilah, Nurfadilah; Febiola, Cindy Claudia; Taufan, Ibnu; Fadhilah, Nur
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.492 KB)

Abstract

Research has been conducted to determine the effect of variations of dispersant on TiO2 nanoparticles as optimization of dirt-free paint. Dispersant used are Ethylene Glycol, Polyethylene Glycol, and Triton X-100 dissolved in white paint. Self-cleaning test with two kinds of stains shows that for mud stain, the best sample is the sample with Ethylene Glycol dispersant, by reduction of stain area reach 40.99 cm2. As for the food coloring stain, TiO2 samples with dispersant Triton X-100 with 24.57 cm2. SEM-EDX test results show that the TiO2 average particle size of paint without dispersant is 132.02 nm. By the addition of PEG, particle size becomes 104.98 nm. From the test results in this study can be shown that the dispersant material effect on the stability of a photocatalyst that can lead to self-cleaning properties, as well as agglomeration so it is able to disperse the TiO2 particles in the paint well. Keywords:  dirt-free paint, dispersant, TiO2
Analisis Parameter Signal to Noise Ratio dan Bit Error Rate dalam Backbone Komunikasi Fiber Optik Segmen Lamongan-Kebalen Rima Fitria Adiati; Apriani Kusumawardhani; Heru Setijono
Jurnal Teknik ITS Vol 6, No 2 (2017)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (638.528 KB) | DOI: 10.12962/j23373539.v6i2.26079

Abstract

Fiber optik telah menjadi solusi transfer data dengan kapasitas tinggi. Dengan 4.3 juta pelanggan, sektor fixed broadband PT Telkom Indonesia bergantung pada kualitas infrastruktur backbone fiber optik, yang direpresentasikan melalui parameter Signal to Noise Ratio (SNR) dan Bit Error Rate (BER). Oleh karena itu, perlu dilakukan analisis terhadap parameter SNR dan BER pada segmen backbone fiber optik antara STO Lamongan 1 dan STO Kebalen, Surabaya. SNR merupakan perbandingan logaritmik antara daya sinyal dan noise yang diterima receiver, sedangkan BER adalah ukuran intensitas terjadinya error pembacaan bit data. Pengukuran di receiver STO Kebalen menghasilkan BER 10-23. Analisa SNR dan BER secara keseluruhan dilakukan melalui simulasi software Optisystem. Backbone 100 Gbps, 84 km dengan sistem DWDM 10 channel ini disimulasikan pada frekuensi 193.1 - 194 THz dengan spacing 100 GHz antar channel. Hasil simulasi menunjukkan nilai SNR dan BER memenuhi standar dan dipengaruhi frekuensi atau panjang gelombang di setiap channel. SNR maksimum adalah 72.37 pada 193.6 THz dan nilai BER minimum yaitu 2.05 × 10-30 pada 193.5 THz. Untuk mendapatkan nilai BER optimum yaitu 10-12, dilakukan pemasangan dispersion compensating fiber serta penambahan daya transmitter pada channel berfrekuensi 193.1, 193.2, 193.9, dan 194 THz.
UJI KARAKTERISTIK SENSOR SUHU DAN KELEMBABAN MULTI- CHANNEL MENGGUNAKAN PLATFORM INTERNET OF THINGS (IOT) Erus Rustami; Rima Fitria Adiati; Mahfuddin Zuhri; Ardian Arif Setiawan
BERKALA FISIKA Vol 25, No 2 (2022): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Telah  berhasil  dilakukan  uji  kinerja  empat  jenis  sensor  suhu  dan  kelembaban  yang  tersedia  di pasaran,  yaitu  DHT22,  BME280,  SHT31  dan  DS18B20.    Sensor  tersebut  dihubungkan  dengan WeMos  D1  R1  ESP8266  yang  bertugas  untuk  mengelola  dan  mengirimkan  data  ke  platform internet  of  things  (IoT)  ThingSpeak.  Pengiriman  data  menggunakan  protokol  message  queue telemetry transport (MQTT) yang berdaya rendah (low-power) dan dapat diandalkan (reliable). Laman web ThingSpeak menampilkan grafik suhu dan kelembaban masing-masing sensor. Data suhu dan kelembaban tersebut dibandingkan dengan thermohygrometer sebagai referensi. Hasil pengujian menunjukkan bahwa sensor mampu mendeteksi perubahan suhu ruangan dengan nilai pembacaan  yang  tidak  berbeda  jauh  dengan  referensi.  Secara  umum,  semua  sensor  bekerja dengan  cukup  baik  yang  ditandai  dengan  koefisien  determinasi  yang  cukup  tinggi  pada  kurva kalibrasi yaitu lebih dari 0,94 untuk suhu dan 0,96 untuk kelembaban.
Design and Analysis of an FTTH-GPON in a Residential Area Rima Fitria Adiati; Apriani Kusumawardhani; Heru Setijono
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 8 No 2 (2022): July-December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v8i2.4233

Abstract

FTTH design is a crucial step to ensure the best performance of the optical link. In this paper, an FTTH-GPON network is designed, and its performance is analyzed using an optical link power and rise time budget. In the residence of 254 users, at least eight feeder cable cores are needed, with respective ODCs and ODPs. The design satisfies the link power budget with the lowest power margin of 2.469 dB/2.826 dB upstream/downstream in its furthest distance. The highest rise time for the system is 0,2236 nm. The FTTH configuration satisfies ITU-T G.984.1 GPON standard.
DESAIN KIT PEMBELAJARAN GERAK MENGGELINDING PADA BIDANG MIRING UNTUK SISWA SEKOLAH DASAR Dzulfiqar Yudha Pranata; Rusydi Balfas; Mohammad Kelfiana; Zaky Vebrian; Joseph Bagas Triambada; Rima Fitria Adiati
Indonesian Physics Communication Vol 20, No 3 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.283-292

Abstract

The experiment of rolling motion on an inclined plane can be related to everyday life and be an example of learning science while playing. This study aims to design a learning kit for rolling motion on an inclined plane for elementary school students. The research method used is research and development (R&D) which has been used to validate and develop products used in education. The result of this research is a rolling motion science learning kit design for elementary school students which consists of an inclined plane, test objects, and student worksheets. The objects used as test objects are solid cylinders, thin hollow cylinders, solid balls, hollow balls, and cubes. From the experiments, obtained variations in acceleration results ranging from 1.23 m/s2 to 3.27 m/s2. Based on experiments and simulations, the designed kit meets the theory of rolling motion and mechanics-dynamic analysis.
Analysis and Synthesis of Guitar Sounds with Hammer on Strumming Technique Abd Djamil Husin; Koharudin Koharudin; Sidikrubadi Pramudito; Sitti Yani; Rima Fitria Adiati
PILLAR OF PHYSICS Vol 16, No 2 (2023)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/15354171074

Abstract

This research aims to analyze and synthesize periodic signals derived from guitar string plucking with hammer-on technique. This research has three stages, namely the data collection stage, the analysis stage, and the synthesis stage. The guitar string was plucked with a tension of 2.5 N and recorded using a sound sensor connected to PASCO Capstone software. The data used has two variations, namely the sound signal of a hammer-on pluck with a half tone increase and a one tone increase. Data analysis was carried out using MATLAB software to obtain deviation graphs as a function of frequency, damping coefficient values, and frequency spectra. The results showed that after hammer-on the amplitude of the tone decreased drastically as the mass per unit length of the string decreased. The initial tone before the hammer-on will appear in the tone after the hammer-on with a lower amplitude as the mass per unit length of the string increases. The synthesis of guitar sounds with this technique is done by combining the individual tones obtained and adjusting the time interval and amplitude according to the literature data
Budidaya Ikan Nila pada Saluran Irigasi sebagai Pemberdayaan Masyarakat Desa Purwasari dalam Industri Perikanan Slait, Mercy; Komala, Siffa Anastasya; Malahayati, Mutia; Manurung, Kevin Pinondang Parulian; Nugraha, Dwi; Fedrik, Fedya; Saparilla, Dirgam Dapa Haidar; Nadhira, Mira; Nisrina, Dhiya Fatin; Rahma, Kinanti Dwi; Adiati, Rima Fitria
Jurnal Pusat Inovasi Masyarakat Vol. 6 No. 1 (2024): April 2024
Publisher : Direktorat Pengembangan Masyarakat Agromaritim, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpim.6.1.22-27

Abstract

Desa Purwasari berada di daerah Gunung Salak memiliki sumber air yang melimpah dengan potensi perikanan yang besar. Potensi tersebut dikembangkan lebih dalam dengan membuat program budidaya ikan nila bekerja sama dengan berbagai pihak yaitu pemerintah Desa Purwasari, Kelompok Tani “Mekar Sari”, dan masyarakat RW 06 Situ Uncal. Program budidaya ini bertujuan memberdayakan masyarakat Desa Purwasari untuk mencapai SDGs guna meningkatkan pendapatan masyarakat, penurunan angka kelaparan, serta kemiskinan. Program budidaya ikan nila terdiri dari pembuatan tiga sekat sebagai kolam budidaya ikan nila di saluran irigasi Situ Uncal, dengan 200 benih ikan nila panjang 10‒15 cm yang disebarkan pada kolam-kolam tersebut, dan pembuatan satu sekat lainnya untuk meninggikan debit serta aliran air di kolam budidaya. Program budidaya ikan nila pada saluran irigasi mendapatkan antusias besar dari masyarakat Desa Purwasari sebagai langkah meningkatkan pendapatan masyarakat sekitar serta sarana edukasi kepada anak-anak Desa Purwasari pada sektor budidaya perikanan. Kolam-kolam tersebut dikelola oleh beberapa kelompok warga seperti kelompok pemuda RW 06, Kelompok tani “Mekar Sari”, dan kelompok bapak-bapak RW 06. Program budidaya nila ini menjadi langkah pemberdayaan masyarakat sesuai dengan potensi yang dimiliki Desa Purwasari.
Semiconductor Based on Oil Palm Empty Fruit Bunch Alkali Cellulose Adiati, Rima Fitria; Nikmatin, Siti; Irmansyah, -
JMPM (Jurnal Material dan Proses Manufaktur) Vol 8, No 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.20521

Abstract

Oil palm empty fruit bunch (OPEFB) is a readily available biomass resource in Indonesia. Its processing into alpha-cellulose and alkaline cellulose offers promising economic opportunities and sustainable sensor development. This study focuses on extracting alpha-cellulose from OPEFB using kraft hydrolysis method and converting it into alkaline cellulose using NaOH solution. The 15, 20, and 25% variation of NaOH percentage during pulping resulting in different pulp quality indicated by alpha-cellulose content. The resulting alkali cellulose exhibits semiconductor properties with an energy gap of 3.6 eV, demonstrating its potential for light sensor or photodiode applications. Additionally, the optical energy gap of alkali cellulose-polyvinyl alcohol composites is investigated.
Semiconductor Based on Oil Palm Empty Fruit Bunch Alkali Cellulose Adiati, Rima Fitria; Nikmatin, Siti; Irmansyah, -
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 8 No. 1 (2024): Juni
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v8i1.20521

Abstract

Oil palm empty fruit bunch (OPEFB) is a readily available biomass resource in Indonesia. Its processing into alpha-cellulose and alkaline cellulose offers promising economic opportunities and sustainable sensor development. This study focuses on extracting alpha-cellulose from OPEFB using kraft hydrolysis method and converting it into alkaline cellulose using NaOH solution. The 15, 20, and 25% variation of NaOH percentage during pulping resulting in different pulp quality indicated by alpha-cellulose content. The resulting alkali cellulose exhibits semiconductor properties with an energy gap of 3.6 eV, demonstrating its potential for light sensor or photodiode applications. Additionally, the optical energy gap of alkali cellulose-polyvinyl alcohol composites is investigated.
Optical and Electrical Properties of OPEFB Alkali Cellulose and PVA Composite Adiati, Rima Fitria; Nikmatin, Siti; Irmansyah; Putri, Nazwa Nuradilla; Anandiwa, Siti Altirana
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.211

Abstract

The Oil Palm Empty Fruit Bunch (OPEFB) is a byproduct of oil palm plantation and abundantly available in Indonesia. It is necessary to process the biomass waste into a more useful and higher value substances, such as semiconductor. This research aims to extract alpha-cellulose from OPEFB and process it into alkali cellulose - Polyvinyl Alcohol (PVA) composite for potential photodetector application. PVA acts as mechanical binding agent with 5%, 7.5%, and 10% concentration. Spectroscopy-based measurement is used to characterize the composite’s optical properties, while LCR meter is used to measure the electrical properties such as conductivity and capacitance. Using UV-Vis spectroscopy with wavelength range of 400-900 nm, it is observed that alkali cellulose with 5% PVA has the highest optical absorbance. Using Kubelka-Munk equation and Tauc plot, the energy gap of the composite was calculated, with the lowest energy gap is 2,769 eV at 5% PVA. Using LCR meter between frequency of 5 Hz to 5 MHz, one can measure conductivity (specific conductance) of a material, where highest obtained electrical conductivity is 2,65×1004 S/cm, which satisfy typical value of semiconductor characteristic. Measurement of Impedance also shows that composite with 7.5% PVA has the highest impedance at lower frequencies, then decreases to almost zero at frequency higher than 5000 Hz. These results demonstrate the potential of alkali cellulose-PVA composite as semiconductor sensors. These findings suggest the potential for developing low-cost, sustainable electronic devices.
Co-Authors - Nurfadilah, - Abd Djamil Husin Agus Kartono Anandiwa, Siti Altirana Apriani Kusumawardhani Ardian Arif Asep Denih Budi Mulyanto Cindy Claudia Febiola, Cindy Claudia Dzulfiqar Yudha Pranata Erus Rustami Fedrik, Fedya Haniyah, Astridea Salwa Hanung Adi Nugroho Heriyanto Syafutra Heru Setijono Heru Setijono Husin, Abd Djamil Ibnu Taufan, Ibnu Irmansyah Irmansyah . Irmansyah, - Joseph Bagas Triambada Koharudin Koharudin Komala, Siffa Anastasya Luluk Setyaningsih Mahfuddin Zuhri Malahayati, Mutia Manurung, Kevin Pinondang Parulian Mohammad Kelfiana Nadhira, Mira Nisrina, Dhiya Fatin Nugraha, Dwi Nur Fadhilah Nurfadilah Nurfadilah Putri, Nazwa Nuradilla Rahma, Kinanti Dwi Rusydi Balfas Saparilla, Dirgam Dapa Haidar Sidikrubadi Pramudito Siti Nikmatin Slait, Mercy Yani, Sitti Zaky Vebrian