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All Journal International Journal of Renewable Energy Development Journal of Degraded and Mining Lands Management AL ISHLAH Jurnal Pendidikan Emerging Science Journal JURNAL INTEGRASI JURNAL PENDIDIKAN TAMBUSAI Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Sainstek : Jurnal Sains dan Teknologi Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) Georest: Geoscience, Remote Sensing, and Technology Gudang Jurnal Multidisiplin Ilmu International Journal of Renewable Energy Development

Pakhrur Razi

Universitas Negeri Padang

Author-ID : 358960

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology 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 Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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SIMULASI PENYUSUPAN LEMPENG INDO-AUSTRALIA KE LEMPENG EURASIA DI PANTAI BARAT SUMATERA BARAT Razi, Pakhrur
Sainstek : Jurnal Sains dan Teknologi Vol 2, No 2 (2010)
Publisher : IAIN Batusangkar

In the coastal area of west Sumatra, specially west Sumatra represent area which is gristle will of the earthquake, since in the coastal area of west Sumatra can be found plate subduction area active that is Indo-Australia plate to Eurasia plate with necromancy average angle is 31,330 and average speed 6-7 cm/year, and sesar area that spread in the as far as Sumatra Island that caused by necromancy sideway Indo-Australia plate to Eurasia. Aims of this research is creating visualization imaging subduction of Indo-Australia plate toEurasia and change of surface morphology. Method of this research is Development research method or R&D, Data of this research based on old research (Akmam, 2006) and visual imaging from Natawijaya (2005). This simulatin maked using 3D max software, google earth, photoshop, and other software, that result it packet in DVD form. Keywords: simulation, subduction, subduction coastal west sumatera

Numerical Analysis of Energy Converter for Wave Energy Power Generation-Pendulum System Aminuddin, Jamrud; Effendi, Mukhtar; Nurhayati, Nurhayati; Widiyani, Agustina; Razi, Pakhrur; Wihantoro, Wihantoro; Aziz, Abdullah Nur; Abdullatif, R Farzand; Sunardi, Sunardi; Bilalodin, Bilalodin; Arifin, A
International Journal of Renewable Energy Development Vol 9, No 2 (2020): July 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.2.255-261

The wave energy power generation-pendulum system (WEPG-PS) is a four-wheeled instrument designed to convert wave power into electric energy. The first wheel is connected to the pendulum by a double freewheel, the second and third are ordinary wheels, while the fourth is a converter component that is axially connected to the electric generator. This design used the Euler-Lagrange formalism and Runge-Kutta method to examine an ideal dimension and determine the numerical solution of the equation of motion related to the rotation speed of the wheels. The result showed that the WEPG-PS' converter system rotated properly when its mass, length, and moment of inertia are 10 kg, 2.0 m, and 0.25 kgm2, respectively. This is in addition to when the radius of the first, second, third, and fourth wheels are 0.5, 0.4, 0.2, and 0.01 m, with inertia values of 0.005, 0.004, 0.003, and 0.1 kgm2. The converter system has the ability to rotate the fourth wheel, which acts as the handle of an electric generator at an angular frequency of approximately 500 - 600 rad/s. The converter system is optimally rotated when driven by a minimum force of 5 N and maximum friction of 0.05. Therefore, the system is used to generate electricity at an amplitude of 0.3 - 0.61 m, 220 V with 50 Hz. Besides, the lower rotation speed and frequency of the energy converter of the WEPG-PS (300 rad/s) and induction generator (50 Hz) were able to generate electric power of 7.5 kW.Â

PEMBUATAN BAHAN AJAR DALAM BENTUK BROSUR MENGGUNAKAN MIND MAP UNTUK PEMBELAJARAN IPA SISWA KELAS VIII DI SMP NEGERI 8 PADANG Mega Oktisa; Hidayati Hidayati; Pakhrur Razi
PILLAR OF PHYSICS EDUCATION Vol 6 (2015)
Publisher : Universitas Negeri Padang

Handout in brochure form use mind map is one of handout that can summarize learning material in simple form, so that students easier to connect facts in learning material, students can optimum thinking skill, understand learning material and can communication or told learning material that have they studied before by teacher. The purposes of this research were producing a high validity, a practicability and an effectivly of handout in brochure form use mind map. The type of research is Research and Development (R&D). The object of research was handout in brochure form use mind map and the subject of research was students on grade VIII in Junior High School 8 Padang. The instruments that used to collect of data were the validation sheets, practicability sheets, and learning outcome sheets. The product and data analysis techniques that used were graphic method, description statistic analysis, and compare mean test. Based on the data analysis that has been done, it could be presented three research results. First, handout in brochure form use mind map on that produced has a high validity with an average value of lecture validity result of 83.88. Second, handout in brochure form use mind map were practice that indicated by the average value of physics teachers responses is 88.86 and 85.77 to average value of students responses. Three, implementing handout in brochure form use mind map was effective in Physics learning that indicated by increasing of significant learning on grade VIII of Junior High School 8 Padang before and after used handout in significant grade 5 %.

PENGARUH PENERAPAN PEMBELAJARAN WEB BASED LEARNING SOCIAL MEDIA DESIGN TERHADAP KOMPETENSI FISIKA SISWA KELAS X SMA NEGERI 1 KUBUNG SOLOK Anofa Liona; Yenni Darvina; Pakhrur Razi
PILLAR OF PHYSICS EDUCATION Vol 7 (2016)
Publisher : Universitas Negeri Padang

Curriculum emphasizes student-centered learning process, teachers are required to guide and facilitate the students so that students are motivated to learn well in school and outside. In order to the learning process goes well we need a learning model that can support that learning. In this case web-based learning social media design can increase the activity of students in the learning process and improve good student interaction with teachers, classmates and the subject matter. That way the students can be expected to increase physical competence. The purposes of this research was to investigate the effect web based learning social media design to the competency of Physics students grade X at SMAN 1 Kubung Solok. Type of research was quasi experimental with randomized control group only design. The population in this research were the students grade X MIA SMAN I Kubung Solok who were registered in the 2014/2015 academic year. Sampling technique was Cluster Random sampling. There were three instruments in this research, those were test sheet of knowledge domain, observation sheet of attitude domain, and performance sheet of skill domain. Based on the data analysis could be presented the result of this research. First, the average value of students which use web based learning social media design in knowledge domain, attitude domain, and skill domain were 87.52, 90.52, and 86.90 respectively. Second, the use of web based learning social media design has given significant effect toward Physics competency of students grade X SMAN 1 Kubung Solok at 0,05 signifacation level

PENGARUH PENERAPAN LEMBAR KERJA SISWA BERBASIS KETERAMPILAN PROSES SAINS TERHADAP DAYA NALAR DI KELAS XI SMAN 3 PAYAKUMBUH Sri Wahyu Hidayati; Pakhrur Razi; Zulhendri Kamus
PILLAR OF PHYSICS EDUCATION Vol 5 (2015)
Publisher : Universitas Negeri Padang

Reasoning ability is needed in life as a basis for solving the problems of life. One effort that can be done to develop the learners reasoning is apply science process skills. The implementation of this skill has a purpose so that learners are able to seek and find their own answers or the various problems faced by holding a series if science process skills. Therefore, researchers compiled Physics worksheets using existing skills in science process skills. This research aims to determine the effect of the application of worksheets based on science process skills to the reasoning power of students in grade XI of SMAN 3 Payakumbuh. The kind of this research i a quasi experimental design with a randomized control group design only, with a population of eleventh grade students of SMAN 3 Payakumbuh enrolled in the academic year 2013/2014. The sampling technique used was purposive sampling. The sample is XI IPA 4 as a experiment XI IPA 5 as the control class. The research data is the ability of reasoning power of Physics students. The research instrument is the achievement test. Based on the analysis of data obtained by the average power of reasoning experimental class is 68.86 which is at sufficient category and the average ability of reasoning power control class 62.99 in middle category. The data obtained were analyzed using two common test average through to test. Conclusion of this research is the hypothesis that there is a significant impact on the use of science process skills worksheets based on the power of reason in grade XI of SMAN 3 Payakumbuh be accepted on the real level of 0.05. Thus, the use of science process skills worksheets can improve students’ reasoning

PENGARUH LEMBAR KEGIATAN SISWA BERORIENTASI PENDEKATAN SAINTIFIK DALAM PEMBELAJARAN FISIKA TERHADAP PENCAPAIAN KOMPETENSI SISWA Muhammad Bohori; Amali Putra; Pakhrur Razi
PILLAR OF PHYSICS EDUCATION Vol 5 (2015)
Publisher : Universitas Negeri Padang

Material of education must be prepared by teacher to do activities of education that students as center of it. The porpuse of the resacrch is to know how influence material of education like work sheet that have oriented to do scientific approach on physics study to attainment student’s competences. This research was an experimental research randomized control group only design. The population of this research were all of the students of SMAN 15 Padang in the first semester of academic year 2014/2015. Research data include the attainment of students from three aspects : attitude, knowledge, and skill. Aspects of the assessment instrument in the form of sheet attitude observation, self assessment sheet, and peer assessment sheet. Assessment instrument aspects of knowledge in the form of multiple choice test and aspects of skills in the rubric scoring sheet. Based on research that has been done, the result of research thet the average value of aspects attitude in the experimental class was 90,02 higher than control class was 87,73. The average value of the aspects knowledge in the experimental class was 77,12 higher control class was 87,73. The Average value aspects of skill in the experimental class was 82,34 higher than control class was 76,7. The research results were analyzed using t test at the 0,05 significance level. The result of study showed that there are significance difference between the students attainment of experimental class with the control class. This difference is due to the influence of the use of student activity sheet oriented scientific approach

Pembuatan program aplikasi untuk menentukan modus pandu gelombang raised-strip dari devais fotonik (Creation of a program to determine the waveguide mode lifted from the photonic device) Genov Zulmartin; - Hidayati; Pakhrur Razi
PILLAR OF PHYSICS Vol 5 (2015)
Publisher : Department of Physics – Universitas Negeri Padang UNP

In the integrated optical system (Integrated Optics), the raised-strip waveguide is part of the photonic divices used as a medium of light propagation. Physical parameters of raised-strip waveguide mode waveguides affects that can be passed on the waveguides. Given the relative complexity of the calculations - calculations in determining the number of waveguide modes, in this research, and numerical analysis made in an application program in order to facilitate the determination of the waveguide mode. Research conducted including descriptive research using a numerical approach. Used numerical approach is the bisection method is an ideal method to find a result with the use of iterative or repetitive calculations. Furthermore, with this method using Matlab software program designed 2007. Were run on the Windows XP operating system based on research conducted in the form of GUI matlab program that displays the dispersion curves. Generated that variations in physical parameters such as refractive index, thickness and wavelength lebal films and give effect to the number of raised-mode strip waveguides of photonic divices. Where the greater the difference in the refractive index is given, the more the mode waveguides can be missed.

Pelatihan Kesiapsiagaan Menghadapi Bencana untuk Masyarakat yang Berada Di ‘’Seismic Gap’’ Desa Muara Siberut Pakhrur Razi; Yohandri Yohandri; Nofi Yendri Sudiar; ifdil ifdil; Thamrin Thamrin; Asrizal Asrizal
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 22, No 1 (2022): Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.02460

Tingginya potensi bencana di daerah seismic gap di kepulauan mentawai telah menjadi perhatian yang serius baik pemerintah pusat maupun daerah. Selain potensi gempa bumi daerah ini juga memiliki potensi diterjang tsunami jika gempa besar terjadi serta banjir. Oleh karena itu perlu dilakukan pelatihan berkelanjutan kepada masyarakat serta mengukur tingkat kesiapsiagaan mereka dalam menghadapi bencana. Program pelatihan ini merupakan bagian dari kegiatan untuk menciptakan desa/nagai tangguh bencana berdasarkan standar SNI desa tangguh necana dan Sendai framework disaster reduction. Selain peningkatan pengetahuan masyarakat tentang potensi bencana di seismic gap kepulauan mentawai, juga dilakukan pelatihan serta pengukuran tingkat kesiapsiagaan masyarakat terhadap bencana. Berdasarkan hasil survey yang laksanakan setelah dilakukan pelatihan, menunjukkan bahwa tingkat kesiapan Individu/keluarga terhadap kesiapsiagaan dalam menghadapi bencana berada pada level utama dengan skor >50.

Pengembangan Modul Mobile Learning Menggunakan Atutor Pada Pembelajaran Fisika Kelas X SMA Negeri 9 Padang Berorientasi Literasi Skill Revolusi Industri 4.0 Widia Mai Yetri; Pakhrur Razi
Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) Vol 5 No 2 (2021): Jurnal Ilmu Fisika dan Pembelajarannya (JIFP)
Publisher : Program Studi Pendidikan Fisika, UIN Raden Fatah Palembang

This research was conducted with the aim to develop a mobile learning module using the industrial revolution 4.0 skill literacy oriented atutor on newton's legal materials as well as effort and energy for the 10th grade of high school. The method used in this research is research and development (R&D) developed by Sugiyono. The stages carried out in this study are limited to 5, namely planning with the identification of potentials and problems, information collection, creating new designs, product validation, and product revisions. The object in this study is the mobile learning module using the atutor oriented skill literacy of industrial revolution 4.0. The data in this study was obtained through a validity instrument consisting of 4 components filled by validators. The value obtained from the validator is analyzed using a formula so that 80.25 results are obtained that are in a very good category. This shows that the mobile learning module using the industrial revolution 4.0 skill literacy oriented atutor is valid.

DEVELOPMENT OF PHYSICS MODULE USING MOODLE INTEGRATED LAB ROTATION IN SENIOR HIGH SCHOOL Revielni Sandra; Pakhrur Razi
PILLAR OF PHYSICS EDUCATION Vol 15, No 2 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12848171074

The use of technology-based learning resources in the teaching and learning process provides benefits in increasing student independence and literacy. It can be an answer to the challenges of industrial revolution 4.0. However, realizing technology-based learning resources is still a challenge, because it is necessary to have the right learning model to achieve the desired results. Therefore, this research developed a moodle-based physics module using a rotation lab model using the ADDIE research method to answer the demands of the industrial revolution 4.0. This study aims to determine the validity and practicality of the moodle-based physics module using a rotation lab model. The moodle-based physics module using the rotation lab is in the very valid category, scoring 87. Meanwhile, in the practical aspect of the moodle-based physics module using the rotation lab model, it scored 91, which is in the efficient category.

Co-Authors A Arifin Abdullah Nur Aziz Abdullah Nur Aziz Adi Suryadi Adree Octova Aisyah Salsabila Dwi Ananda Amali Putra Aminuddin, Jamrud Amir, Harman Anofa Liona Arifin, A Asrizal Asrizal Asrizal Bahri, Aliefa Zunaida Bilalodin Bilalodin Fadila, Husnul Farzand Abdullatif fitri mairizki Gautama, Mohammad Isa Genov Zulmartin Hamdi Hapsoro, Cahyo A. Hidayati Hidayati Husna, Rahmi Juita Husnul Kausarian Ifdil Ifdil Jamrud Aminuddin Lahara Yanuarsi Marzuki Marzuki Mega Oktisa Muhammad Bohori MUHAMMAD YUSUF Mukhtar Effendi Mukhtar Effendi Muttaqiin, Arief Mutya Vonnisa Nofi Yendri Sudiar Nofi Yendri Sudiar Nurhayati Nurhayati Nurhayati Nurhayati Putri Aulia R Farzand Abdullatif rahmi juita husna Ramadhan, Ravidho Revielni Sandra Rinadi, Aulia Rozi, Hanifsyah Silfi sutri Insani Sri Wahyu Hidayati Sunardi Sunardi Sunardi Sunardi Thamrin Widia Mai Yetri Widiyani, Agustina Wihantoro Wihantoro Wihantoro Wihantoro Yanfatriani, Elsa Yendri Sudiar, Nofi Yenni Darvina Yohandri Yoszi Mingsi Anaperta Yusefarina Yusefarina Yusnaini, Helmi Zulazhari Zulhendra, Zulhendra Zulhendri Kamus

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