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All Journal International Journal of Evaluation and Research in Education (IJERE) BERKALA FISIKA Jurnal Penelitian dan Pembelajaran Fisika POSITRON Jurnal Pengajaran MIPA Komunikasi Fisika Indonesia Jurnal Pembelajaran MIPA Jurnal Sosioteknologi Jurnal Fisika Unand Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Jurnal Aplikasi Fisika JFA (Jurnal Fisika dan Aplikasinya) Jurnal Pendidikan Fisika Jurnal Edu Research JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) Momentum: Physics Education Journal Indonesian Journal of Science and Mathematics Education Jurnal Biologi Tropis JSKK (Jurnal Sains Keolahragaan dan Kesehatan) International Journal of Research in Counseling and Education JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI Ensiklopedia of Journal Global Conference Index Jurnal Ilmu Fisika Risalah Fisika Pelita Eksakta Sainstek : Jurnal Sains dan Teknologi Indonesian Journal of Electrical Engineering and Computer Science PAKAR Pendidikan Science and Environmental Journals for Postgraduate Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika BIOCHEPHY: Journal of Science Education Journal of Comprehensive Science Applied Engineering, Innovation, and Technology Journal of Experimental and Applied Physics

Yulkifli Yulkifli

Physics Department, Faculty Of Mathematics And Natural Science, Universitas Negeri Padang, Jl. Prof. Dr. Hamka Air Tawar Padang, Sumatera Barat 25131, Indonesia

Author-ID : 425281

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PENGUKURAN TEKANAN UDARA MENGGUNAKAN DT-SENSE BAROMETRIC PRESURE BERBASIS SENSOR HP03 Yulkifli, Yulkifli; Asrizal, Asrizal; Ardi, Ruci
Sainstek : Jurnal Sains dan Teknologi Vol 6, No 2 (2014)
Publisher : IAIN Batusangkar

This research has successfully designed an instrument to measure air pressure, namely, DT-Sense Barometric Pressure and Temperature (DT-SBPT). DT-SBPT is a smart sensor module on the basis of HP03 sensor. Data were collected using direct and indirect measurement. Direct measurement was done toward air pressure. Indirect measurement, however, was applied to determine the exact and accuracy of the measurement of air pressure. Data were analyzed by using two ways, namely statistic and graphic ways. The result of the research shows that DT-SBPT has high appropriateness and accuracy, which is 0.99. The air pressure around earth surface decrease linearly when the height increase.Keywords: air pressure, smart sensor module

PEMBUATAN SISTEM PENGUKURAN VISKOSITAS FLUIDA SECARA DIGITAL MENGGUNAKAN SENSOR EFEK HALL UGN3503 BERBASIS ARDUINO UNO328 Tissos, Nurry Putri; Yulkifli, Yulkifli; Kamus, Zulhendri
Sainstek : Jurnal Sains dan Teknologi Vol 6, No 1 (2014)
Publisher : IAIN Batusangkar

he purpose of this research is to determine the performance specifications and design specifications of viscometer. Kind of this research is laboratory experiment. The result is the design of the measurement system consists of an UGN3503 sensor as the sensing iron ball and an electronic box, the system have the average relative accuracy is 96% with an average of 0.9706. The viscosity values for oil is 10,237 Pa s and cooking oil of 2,286 Pa s.Key words : viscocity, arduino uno328, hall effect UGN3503

PENGEMBANGAN CATU DAYA PRESISI DISPLAY DIGITAL UNTUK PRAKTIKUM FISIKA LISTRIK DINAMIS Hamid, Bushra; Agustiyanto, Frans Rizal; Yulkifli, Yulkifli
Sainstek : Jurnal Sains dan Teknologi Vol 8, No 2 (2016)
Publisher : IAIN Batusangkar

This study aims to generate power supply precision instrument digital display a valid and practical for students of physics 3rd semester of the school year 2014/2015. This research includes development research (research development) of the power supply circuit that has been common there are some drawbacks, namely, the output of output that does not fit, there is still AC voltage on the output value, the output voltage is unstable, so that the results of the lab basic physics 2 be not in accordance with the results of the theory. The addition of the diode bridge circuit helps perfect output voltage into DC, the capacitors in the circuit capacity was raised as a reliever ripple or ripples form to obtain a stable DC voltage value, for a voltage stabilizer is also used IC9815 surge protector. Limited trial conducted in STAIN Batusangakar to 26 students. Based on the results of data analysis has been carried out can be summarized as follows: (1) The results of the validation tool precision power supply digital display is very valid. (2) The results of trials carried out showed that the practicalities have met the criteria that can be used and implemented in a lab with practicality very practical value.

DESAIN ALAT HITUNG KECEPATAN SUDUT BERBASIS SENSOR MAGNETIK FLUXGATE Yulkifli, Yulkifli; Anwar, Zul; Djamal, Mitra
Sainstek : Jurnal Sains dan Teknologi Vol 2, No 1 (2010)
Publisher : IAIN Batusangkar

This paper explains the design of angular velocity apparatus (Gyrometer) base on fluxgate sensor. The design of sensor elements consists of the double secondary coil (pick-up) and excitation coil with 10 layers, core layer is put into the isolative cavity. Fluxgate magnetic sensor works based on the principles of second harmonics, the intensity of magnetic fields proportional to the output sensor voltage. Based on data analysis on to sensor characterization it was obtained that the sensitivity 4.52 mV/?T, ±20 ?T in ranges. The maximum absolute error obtained from polynomial function approach in 0.53 ?T and the relative error is 1.3% on magnetic fields ~19 ?T. In this research the sensor can measure the frequency in the maximum absolute and relative error 0.68, 0.58, 0.17, 0.71 and 0.026%, 0.022%, 0.006%, 0.021%, whereas the disc magnet with the number of magnet 2, 4, 8 and 16 respectively.Key words: angular velocity, fluxgate sensor, coil, second harmonic

PEMBUATAN SENSOR PROXIMITY BERBASIS SENSOR INDUKTIF METODE DIFFRENSIAL BERBENTUK KOIL DATAR Yulkifli, Yulkifli
Sainstek : Jurnal Sains dan Teknologi Vol 4, No 2 (2012)
Publisher : IAIN Batusangkar

The physical principle of flat coil sensor was based on the changing inductivity of a flat coil due to disturbance of conductive material in its electromagnetic fields, so that eddy current on the conductive material was occurred. The displacement between flat coil and conductive material was a function of the total inductance L of the sensor system, which will be measured as resonance frequency by using an inductive capacitive oscillator. The measurement system consists of a flat coil, oscillator circuit LC, multimeter and micrometer. In measuring, as independent variables were distance of object and time, while dependent variable was output voltage of flat coil sensor by using differential technique. Data was collected through two ways i.e. direct and indirect measurement. Then data was analyzed by using graph methods and error analysis. Data analysis shown that: 1). The output sensor without differential technique isn?t linear with distance of conductive material; 2). The output sensor with differential technique is inversely proportional with distance of conductive material with negative sensitivity 1,2783 Volt/mm ; 3). The precision of sensor was high with average of precision is 0,999, and 4). The stability of sensor was also high with small output voltage variation. Key words: sensor, flat coil, characteristics, sensitivity, precision, stability

UPAYA PENINGKATAN KOMPETENSI AFEKTIF PESERTA DIDIK DALAM PEMBELAJARAN FISIKA DENGAN MENERAPKAN MODEL LEARNING CYCLE 5E DI KELAS IX.2 SMP NEGERI 2 CANDUNG Netti, Fitra; Usmeldi, Usmeldi; Yulkifli, Yulkifli
Jurnal Penelitian Pembelajaran Fisika Vol 1, No 1 (2012)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jppf.v1i1.595

Telah dilakukan Penelitian Tindakan Kelas (PTK) dengan menerapkan Model Learning Cycle 5E dalam upaya meningkatkan kompetensi afektif peserta didik dalam pembelajaran fisika di kelas IX.2 SMP Negeri 2 Candung. Penelitian ini dilatarbelakangi oleh permasalahan yang timbul selama proses pembelajaran seperti: pembelajaran bersifat teacher centered, guru cenderung menggunakanÂ metode ceramah sehingga mengakibatkan kurang berkembangnya nilai karakter dan keterampilan sosial peserta didik. Penelitian ini bertujuan untuk meningkatkan kompetensi afektif peserta didik dalam pembelajaran fisika. Ketercapaian tujuan tersebut dilakukan dengan menerapkan Model Learning Cycle 5E. Model ini mendorong peserta didik belajar secara bertahap dan konstruktif melalui tahap engagement, exploration, explanation, elaboration, dan evaluation. Jenis penelitian adalah penelitian tindakan kelas. Lokasi penelitian adalah SMP N 2 Candung. Subyek penelitian adalah peserta didik kelas IX.2 dengan jumlah 20 orang. Penelitian dilaksanakan pada semester ganjil Tahun Ajaran 2011/2012.Â Penelitian dilakukan sebanyak tiga siklus. Setiap siklus terdiri dari empat langkah penelitian yaitu perencanaan, pelaksanaan, observasi dan refleksi.Â Instrumen penelitian terdiri dari lembar observasi dan tes hasil belajar peserta didik. Teknik analisis data menggunakan analisis deskriptif. Hasil penelitian menunjukkan bahwa terjadi peningkatan kompetensi peserta didik. Kompetensi afektif peserta didik meningkat dari nilai rata-rataÂ 61,0 pada siklus I, 71,8 pada siklus II dan 79,6 pada siklus IIIÂ dengan nilai kategori baik. Kompetensi psikomotor meningkat dari nilai rata-rata 69,3 pada siklus I, 83,2 pada siklus II dan 93,1 pada siklus III. Dapat disimpulkan bahwa penerapan model pembelajaran Learning Cycle 5E dapat meningkatkanÂ kompetensi afektif peserta didik dalam pembelajaran Fisika. Â Keywords: Model, Â LearningÂ Cycle 5E, kompetensi afektif, pembelajaran fisika

Analisis Studi Pendahuluan Lembar Kerja Siswa Berbasis Model Inquiry Based Learning Pada Pembelajaran Fisika Abad 21 Samudra, Elmi Yanto Adhar; Yulkifli, Yulkifli
Jurnal Penelitian Pembelajaran Fisika Vol 5, No 2 (2019)
Publisher : Universitas Negeri Padang

21st century physics learning makes students think critically, creatively and innovatively in mastering science concepts. The use of teaching materials and the selection of the right model determine success to achieve the expected goals in the physics learning process. The student worksheet based on inquiry based learning models can increase the activeness and independence of learning of students in investigating, discovering concepts, and being able to implement learning materials with their lives. This study aims to analyze a preliminary study of student worksheets based on inquiry based learning models in physics learning. This research is a descriptive study conducted through observation in high schools (SMAN 4 Padang) with the research sample being students of class X MIPA. Preliminary study analysis of student worksheets based on inquiry based learning models includes analysis of graduate competency standards, student analysis, analysis of learning activities, and assessment analysis. The instrument used in the study was in the form of questionnaires and interview sheets. The results showed that the analysis of graduate competency standards obtained an average value of 73.33, analysis of learners obtained an average value of 67.75, an analysis of learning activities obtained an average value of 70.63 and assessment analysis obtained an average value of 84.23. so, it is necessary to develop student worksheets based on inquiry based learning models

RANCANG BANGUN SISTEM PENGUKURAN SUHU DAN KELEMBABAN UDARA MENGGUNAKAN SENSOR SHT75 BERBASIS INTERNET OF THINGS DENGAN DISPLAY SMARTPHONE Iqbal, Muhammad; Yulkifli, Yulkifli; Darvina, Yenni
BERKALA FISIKA Vol 22, No 3 (2019): Berkala Fisika Vol. 22 No. 3 Tahun 2019
Publisher : BERKALA FISIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.171 KB)

Temperature and humidity are important weather parameters for large purposes, such as agriculture, aviation, tourism, etc. The Indonesia's Meteorology, Climatology and Geophysics Agency is converting from conventional measuring instruments into digital systems. This research aims to determine the performance and design specifications of the internet of things for measuring the air temperature and humidity using the SHT75 sensor with a smartphone display. The system was built from SHT75 module sensor as temperature and humidity sensors with NodeMCU ESP8266 microcontrollers that can access the internet network so that data can be sent to the ThingSpeak. Data server from ThingSpeak appeared on smartphones using AppInventor. The instrument builder circuit was in a 5x5x10 cm3 box containing the SHT75 sensor,the NodeMCU ESP8266, the ON/OFF switch, the RESET button, and the adapter to connect to the source. It was found that results of the design specifications of the measuring instrument has a high accuracy and precision. The accuracy of measuring instruments for air temperature is 98.89% and for air humidity is 99.41%. The precision of measuring instruments for airtemperature and humidity are 99.73% and 99.08%, respectively.Keyword : SHT75, NodeMCU ESP8266, Internet of Things, ThingSpeak, App Inventor

Synthesis and Characterization of HPMpFBP Using Raman Spectroscopy, Nuclear Magnetic Resonance (NMR) Spectroscopy, and FTIR Yusri, Wilda Triputri; Yulkifli, Yulkifli; Alizar, Alizar; Md Isa, Illyas
Jurnal Ilmu Fisika Vol 13, No 2 (2021): September 2021
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.13.2.109-117.2021

Synthesis is one of the models for the formation of a new drug or compound with the aim of obtaining better activity at an economical price. HPMpFBP has been synthesized by mixing of 1-phenyl-3-methyl-5-pyrazolone and 4-fluorobenzoyl chloride. In the synthesis of HPMpFBP, a new compound namely 1-phenyl-3-methyl-4-(4-fluorobenzoyl)-5-pyrozolone has been obtained. The sample then characterized by non-invasive methods using Raman spectroscopy, Nuclear Magnetic Resonance (NMR) Spectroscopy and FTIR. Through this characterization process, wavelength information, chemical shift, and functional groups (chemical structure) of HPMpFBP samples were obtained. HPMpFBP has a chemical structure of C17H13N2O2F, the highest wavelength carried out by characterization using Raman is 1643.91 cm-1, the highest chemical shift characterized by using NMR (Nuclear Magnetic Resonance) is 7.8628 ppm, and the functional groups identified by using FTIR are (O-H, C-H, C=C, C=O, C-N). Information from the HPMpFBP sample characterization process using mentioned characterization methods was compared with previously reported results.

Desain dan Pengembangan Fluxgate Magnetometer dan Beberapa Aplikasinya Suyatno, Suyatno; Djamal, Mitra; Yulkifli, Yulkifli; Setiadi, Rahmondia N.
Jurnal Fisika dan Aplikasinya Vol 4, No 1 (2008)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Telah dilakukan pembuatan dan pengembangan sensor magnetic fluxgate yang terdiri dari dua buah probe, berupa kumparan eksitasi, kumparan sekunder (pick-up) dan inti terbuat dari bahan vitrovac. Dengan menggunakan metode harmonisa kedua, penggunaan sensor ini adalah untuk mengukur besarnya medan magnetik, pengukuran arus pada penghantar dan pengukuran jarak. Pada pengukuran medan magnet didapatkan nilai pengukuran B hingga 20 nT dengan sensitifitas 533,94 mV/Î¼T, dengan kesalahan absolut 200 mV dan kesalahan relatif 2,76%, sedang untuk pengukuran jarak, sensor ini mampu melakukan pengukuran jarak sampai pada jarak 13,8 mm dengan resolusi sampai pada 10 Î¼m dan kesalahan absolut 0,16 mm serta kesalahan relatif sebesar 3,4%.

Co-Authors - Asrizal -, Vauzia - Abdi Iswahyudi Yasril Abdul Razak Ade Usra Berli Afrianda, Teguh Ahmad Fauzi Ainur Rizki, Iqbal Aldri Frinaldi Alizar, Alizar Alwi Nofriandi Aminuyati Andi Alatas, Andi Anggraini Anggraini Anwar, Suci Aprilliani, Cici Armiati Armiati Asrizal Asrizal A Audia, Washilla Aulia Asman Az-Zahra, Khalishah Raudhatul Azis, Hasbi Azmi Asra, Azmi Batubara, Fanny Yuliana Dasman Lanin Delvi Ayu Wulandari Desmiwati, Riti Didik Hariyanto Djusmaini Djamas Djusmaini Djamas Djusmaini Djamas Dona, Afrini Dwina Melisa Elisia, Rini Fadilla Meidita Fanny Rahmatina Rahim Fauzi, Wulan Aulia Febrina, Cory Febrina, Suci Festiyed Fevria, Resti Fevria, Resti - Fimatesa Windari Fitra Netti Frans Rizal Agustiyanto Gabe, Totop Genesa Hatika, Rindi Habibi Putra Hamid, Bushra Harman Amir Hatthoahira . hendrita, juli Heron Tarigan Hufri Hufri Ilyas Muhammad Isa Indang Dewata Insani, Munadia Irwan Irwan Isa, Ilyas Muhammad Junita, Novia Kartika, Imelda Rahmayunia Khoirun Nisa Kiki Amelia, Kiki Kitty Mulyati Chania Lily Handayani Mairizwan, Mairizwan Maria Idayu Matondang, Anggun Sisri Br. Md Isa, Illyas Meladina Meladina Melia Vivi Ningrum Mimo Putra Ardiansyah Mitra Djamal Muhammad Irfan Muhammad Rivai Murtiani Murtiani Mutia Oktaviani, Annisa Mutia Risma Nadi Suprapto Nadya Pratiwi Nofi Yendri Sudiar Nofi Yendri Sudiar Nur Anisa Sati’at Nur Nahdia, Vivi Nur Suci Eka Putri Nurry Putri Tissos Nurul Ihsan Pramita, Rissa Pratama, Rayvol Dion Pratiwi, Nadya Puja Kahar Putri Diana Putri Oktavia Putri, Santi Diana Putri, Sylvia Delfi Mardiana Putri, Widya Janatul Rahmadani, Febbi Rahmondia N. Setiadi Ramadhiani, Dhea Dinda Rambe, Indah Anggraini Ramli Ramli Rembrandt, Rembrandt Renol Afrizon Renti Surya Retno Riyaningtyas Rezkik, Fitrianola Rezy Prima Rina Mariyana Rindi Genesa Hatika Riren Rostari Rissa Pramita Roni Jarlis Ruci Ardi Samudra, Elmi Yanto Adhar Sania, Hani Sari, Mona Berlian Sati’at, Nur Anisa Septian Rahman Hakim Shabrina Amalia Siregar, Dewi Rahmadani Sri Mutiar, Sri Stivani Suherman, Dea Suaidi Ahadi Susalam, Malikil Kudus Suyatno, Suyatno Teguh, Teguh Afrianda Ulianas, Alizar Umar, Genius Usmeldi Usmeldi Vauzia, Vauzia Venny Haris Violita Violita Washilla Audia Widya Janatul Putri Widyaningrum Indrasari wita nirmala Yanti, Nurfitriza Yardani Adi Cosra Yenni Darvina Yohandri Yohandri Bow Yolanda . Yolanda Karinia Yosa aulya putri Yudha, Fauzan Syafril Yuliana Batubara, Fanny Yunia Sari, Mesi Yusri, Wilda Triputri Zul Anwar Zul Fahmi, Hafizhuddin Zulhendri Kamus Zulpadrianto Z Zurian Affandi

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