cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Dewi Muliyati
Contact Email
dmuliyati@unj.ac.id
Phone
-
Journal Mail Official
snf@unj.ac.id
Editorial Address
Fisika FMIPA Universitas Negeri Jakarta GHA Lt.5 Jl Rawamangun Muka No.1
Location
Kota adm. jakarta timur,
Dki jakarta
INDONESIA
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Published by Universitas Negeri Jakarta
ISSN : 23021829     EISSN : 24769398     DOI : https://doi.org/10.21009/03
Core Subject : Science, Education, Engineering,
Electrical & Electronics Engineering Energy Physics Other
Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable Energy
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 976 Documents
 34   35   36   37   38 
PENGARUH BENTUK NOTCH TERHADAP KURVA HISTERISIS BAHAN FEROMAGNETIK NANOWIRE W. Nursiyanto; B. Soegijono; E. Djatmiko
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (675.93 KB)

Abstract

Spintronic devices and data storage which based on magnetic usually made from material of ferromagnetic nanowire. The shape and size of the hysteresis for a ferromagnetic material have a very important meaning in its application on data storage devices. In this research has investigated hysteresis of a ferromagnetic material (Fe, Ni and Co) nanowire which has been given of doubles notch symmetrically in the middle of the nanowire with the shape are triangles and arches. Dimensional of nanowire size is 2000 × 200 × 5 Nm3 with a cell size of 2.5 × 2.5 × 2.5 Nm3 and the factor of damping is 0.01. The simulation of micromagnetic has been observed with uses software called Object Oriented Framework Micromagnetic (OOMMF) that based on equations of magnetic spin dynamics Landau-Lifshitz-Gilbert (LLG) The initial condition type of structure domain wall (DW) has been given with shape transverse-wall (TW) in the middle of the notch by the configuration of head-to-head. And then nanowire has been given external magnetic field with direction of the x-axis started from -150 mT to 150 mT to get hysterisis curve. The result shows that the shape of notch does not affect the hysteresis curves of ferromag. Keywords: ferromagnetic, nanowire, notch, oscillations, micromagnetic.
VISUALISASI DAN KARAKTERISASI TANAH LONGSORAN STUDI KASUS: KECAMATAN SINJAI TENGAH PROVINSI SULAWESI SELATAN Linda Handayani; Fourier D. E. Latief; Rustan Rustan; Acep Purqon
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.599 KB)

Abstract

Central Sinjai is one of the sub districts in Sinjai, South Sulawesi Province. Central Sinjai is an area that prone of landslide. This is caused by the dominance of the hills and mountains form and it has a steep slope. Landslide in Sinjai is one of the disasters that are difficult to avoid, because it is one of the consequences of geographic location. Nevertheless, it can be prevented and minimized risks by conducting fundamental research. The aims of this research are to visualize soil landslides samples in 3D. This samples were taken in prone area of landslides with different coordinates. In addition, in this research also analize physis paramater of the samples. This reserach is very important to look up the real condition of the soil landslides. This Research will be a fundamental research to understand the characteristic of landslides in Sinjai, then could be a refference to anticipate and reduce a risk of landslides. Image in 2D were taken by Micro-CT Scanner, Sky Scan 1173. Scanning Process use X-Ray with voltage 130 kV, current 60 μA, and camera resolution 1120x1120 pixel. Then, reconstruction image will be visualized by Data Viewer and CT Vox. CT An is using to characterising physics parameter. The results of this research has showed that landslide soil structure is composed by small grain and the soil have low density. The porosity of soil lanslide is 26,73%. Keywords: Visualisation, Characterisation, Soil Landslides, South Sulawesi
METODA VOLUME HINGGA DENGAN JALA TAK-TERSTRUKTUR UNTUK MENSIMULASIKAN PERLUASAN PULAU AKIBAT DEPOSISI SEDIMEN Zulbahrum Caniago
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.394 KB)

Abstract

Method finite volume (FVM) has been used for resolving non-linear equations that model the sedimentary cases where the formation and expansion of the island in the estuary. Non-linear equation as the formula is the equation of hydrodynamics transport of sediment. In the completion of the transport equation is done by using the space discretization technique unstructured triangular elements. Data generated numerical solutions of sediment deposition rate distribution spatially and temporally as information dynamics formation and expansion of the island due to sedimentation in the estuary, in this case is the phenomenon of islands in the estuary Ekortikus Banyuasin (MSB) South -Sumatera. Accretion of sediment case raises broad impact on narrowing the island at the mouth thereby affecting the capacity of the distribution of the flow. Two rivers flow into estuaries, rivers Banyuasin and Lalan as well as the influence of the tidal wave is a factor that plays an important role in distributing the sedimentation of the estuary. The results showed that the formation and expansion of the island occurred in the flow stagnation zone and the curvature due to the shear stress in the vertical direction between two streams. Study of the formation mechanism of the island is also strengthened by giving treatment to the system by changing the flow rate of the river and put the potential barrier at the mouth. Keywords: Simulation, Sedimentation, Finite Volume Method, Potensial Barrier, Estuary.
DISAIN DAN PEMBUATAN PEMBANGKIT ALIRAN METODE ROLL WIPER UNTUK SISTEM PENGUKURAN KONSENTRASI PORFIRIN-Fe BERBASIS SENSOR GMR Ahmad Aminudin; Mitra Djamal; Suprijadi Suprijadi; Daryono Hadi Tjahyono; Juniastel. 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.472 KB)

Abstract

Has made generating fluid flow wiper roll method used in measurement systems Fe concentration of porphyrin-based GMR sensor. This measurement system requires a low flow and can be controlled. Generating low flow can be generated with a wiper roll method. Wiper roll method works based on circular sweeping using three roll bearings. Three bearings are used to suppress the elastic hose interchangeably. Shifting the emphasis bearing against the elastic hose causes the fluid flow. Three roll bearing load divided by the same angle is 120o with a radius of 30mm to the length of the shaft so as to produce the same trajectory. The test results showed that the speed of the motor has a sensitivity to the motor voltage for 4,75rpm / V, the velocity of fluid flow sensitivity to the motor voltage for 0,015mL / V and the motor starts to respond after the motor voltage is greater than 3 volts. Key Word : Flow Fluid Generator, Roll Wiper Method, sensitive.
PENGEMBANGAN SENSOR JARAK BERBASIS FLUXGATE Zannuraini Zannuraini; Mitra Djamal; Widyaningrum Indrasari
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.246 KB)

Abstract

A fluxgate is a magnetic sensor which works by comparing the measured magnetic field with the magnetic field reference, this sensor has been developed in various fields. This research aims to develop one of fluxgate aplication that is proximity sensor. Methode in this research is experiment with the steps are the manufacture of sensors, characterization and calibration sensor to distance. The result is fluxgate sensor with the ovale core Vitrovac type 6025Z, it has excitation coil about 360 windings and pick up coil about 240 windings. The characterization of sensor is known that the sensor has a sensitivity of 1639,7 mV/ μT and work in the area ± 2,3 μT, with the maximum absolute error is 0,15298 μT and maximum relative error is 3,257 %. From the calibration of distance has obtained that the sensor works at a distance from. 15,86 – 27 mm. Keywords: Fluxgate, proximity sensor.
RANCANG BANGUN BATTERY CHARGE CONTROLLER DUAL SUMBER PLTS DAN PLN SEBAGAI SUPLAI CHARGER LAPTOP Andi Gunawan; Cecep E Rustana; Iwan Sugihartono
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.845 KB)

Abstract

The purpose of this research is to make a device battery charge controller with dual energy sources, that is Solar Power Plant as a primary energy source and PLN (State Electricity Company) as a backup energy source. Sources of energy used is stored in two batteries which are controlled by the microcontroller Arduino Mega 2560. Microcontroller used to control a switch of two battery when charging and to prevent overcharging the battery. Besides, microcontroller is also used to assign which batteries will be used to supply the laptop charger, then to removal the resources to PLN when both batteries at the discharge condition. Voltage and current output charger controller for supply laptop charger are 20.12 volt and 2.67 ampere. Keywords: dual energy, charge controller, microcontroller, laptop.
KARAKTERISASI PANJANG PIPA PDAM SEBAGAI SALURAN TRANSMISI WI-FI PADA FREKUENSI 2.4 GHZ Kezia N Anou; Yono Hadi Pramono
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (484.317 KB)

Abstract

Telah dilakukan karakterisasi pipa logam PDAM sebagai saluran transmisi gelombang Wi-Fi pada frekuensi 2.4 GHz. Metode pengukuran dilakukan dengan observasi atenuasi pada berbagai panjang pipa. Pengaturan eksperimen dilakukan dengan menggunakan access point sebagai pemancar Wi-Fi melalui antena monopole. Begitu juga pada bagian penerima digunakan antena monopole sejenis. Untuk mengoptimalkan radiasi Wi-Fi agar dapat sepenuhnya masuk ke dalam pipa, maka digunakan boks konduktor sebagai sangkar Faraday yang akan membungkus kedua access point baik pada pemancar maupun penerima. Hasil karakterisasi panjang pipa PDAM akan dapat menentukan nilai atenuasi/loss per meternya yang dibandingkan dengan propgasi sinyal tanpa pipa. Nilai atenuasi dan daya pada jarak 12 meter adalah 0.1661 dB dan 64.7 dB dimana sinyal dapat diarahkan menuju antena penerima dengan baik. Secara keseluruhan hasil penelitian ini akan bermanfaat bagi masyarakat untuk mendapatkan komunikasi sinyal Wi-Fi via pipa PDAM. Kata kunci: Wi-Fi, antena monopole, transmisi gelombang , atenuasi.
PEMBUATAN ALAT UKUR PENELITIAN DIFRAKSI CAHAYA BERBASIS VISION ASSISTANT DAN LABVIEW Novin Syahputra; Sunaryo Sunaryo; Prawito Prawito; Sastra K. Wijaya
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.609 KB)

Abstract

It has created a measuring instrument which can measure light intensity distribution pattern. By exploiting phenomenon the nature of light, the author would like to know the value of wave length and the intensity distribution of the diffraction pattern on laser light that passes through a diffraction grating so it can be appropriate to reference theory. The source of light use red of monochromatic, polychromatic light which produce RGB color and mercury lamp. Grating diffraction and source of light are moved by DC motor with go forward and go back moving, which next by rotary encoder change distance become counter in partition. The all of these moving are manage by LabVIEW National Instrument and processing of image is executed of Vision Assistant program. The result of research is red monochromatic with width diffraction grating 300 lines/mm, is produced wave length of light (640 - 676) nm. For blue color with width diffraction grating 600 lines/mm, is produced wave length of light (454 - 475) nm. For green color with width diffraction grating 600 lines/mm, is produced wave length of light (524 - 547) nm. For red color with width diffraction grating 600 lines/mm, is produced wave length (654 - 697) nm. The greater order of diffraction then the less level of intensity was resulted. Keywords : diffraction of light, DC motor, LabVIEW, wave length.
ANALISIS DIAMETER PIPA PDAM SEBAGAI JALUR TRANSMISI SINYAL WI-FI PADA FREKUENSI 2.4 GHZ Susanti H. Hasan; Yono Hadi Pramono
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (842.704 KB)

Abstract

Have performed the analysis of metal pipe PDAM as transmission line wave had Wi-Fi at a frequency of 2.4 GHz. The method of attenuation measurements with observations on a variety of pipe diameters. The setting is done by using an access point as a Wi-Fi transmitter through monopole antenna. So also on the type of receiver used monopole antenna. To optimize Wi-Fi radiation in order to fully enter into the pipe, then use the box as a Faraday cage conductor who will wrap up a second access point both at the transmitter and receiver. From the analysis of the pipe diameter PDAM to a diameter of 3 inches (7.65 cm) loss / attenuation of 13.61 dBm, to a diameter of 4 inches (10.16 cm) loss / attenuation of 13.02 dBm, and for a diameter of 6 inches (15.24 cm) loss / attenuation of 1.66 dBm. Compared with without using the pipe as a transmission line for the same distance of 3 meters loss / attenuation reaches 56.1 dBm. Overall results of this study will be useful for people to get a Wi-Fi signal communication via pipeline PDAM. Keyword : Wi-Fi, Monopole Antenna, Wave Transmission, Attenuation.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (670.965 KB)

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.

Page 36 of 98 | Total Record : 976

 34   35   36   37   38 

Filter by Year

2012 2026


Reset
Filter By Issues
All Issue Vol. 14 No. 1 (2026): Joint Prosiding IPS dan Seminar Nasional Fisika Vol. 13 (2025): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2024 Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023 Vol 11 (2023): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2022 Vol 10 (2022): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2021 Vol 9 (2020): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2020 Vol 8 (2019): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2019 Vol 7 (2018): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2018 Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017 Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016 Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015 Vol 3 (2014): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2014 Vol 2 (2013): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2013 Vol 1 (2012): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2012 More Issue