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All Journal Lembaran Ilmu Kependidikan Jurnal Tapis : Jurnal Teropong Aspirasi Politik Islam Jurnal Pendidikan Fisika FKIP UM Metro Biology, Medicine, & Natural Product Chemistry Jurnal Pendidikan Kimia Universitas Riau Al-Adyan: Jurnal Studi Lintas Agama Unnes Science Education Journal JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Jurnal Penelitian Pendidikan IPA (JPPIPA) JMPM: Jurnal Matematika dan Pendidikan Matematika Indonesian Journal of Science and Mathematics Education Jurnal Inotera Media Ilmiah Teknik Sipil Care : Jurnal Ilmiah Ilmu Kesehatan Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Inovasi Pendidikan JPGMI (Jurnal Pendidikan Guru Madrasah Ibtidaiyah Al-Multazam) Pascal: Journal of Physics and Science Learning Jurnal Riset Biologi dan Aplikasinya Jurnal JEETech U-Teach: Journal of Young Physics Education Teacher Jurnal Keperawatan Muhammadiyah Bengkulu Jurnal Interprof Entalpi Pendidikan Kimia Jurnal Riset dan Inovasi Pembelajaran Journal of Health Community Service Al-Kawakib AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Hukum Sehasen J-Innovation Journal of Educational Sciences Al Huwiyah: Journal of Woman and Children Studies Jurnal Tekstil: Jurnal Keilmuan dan Aplikasi Bidang Tekstil dan Manajemen lndustri Greenation International Journal of Engineering Science Biodik: Jurnal Ilmiah Pendidikan Biologi Greenation International Journal of Engineering Science U-Teach Jurnal Pengabdian Cendikia Nusantara JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Indonesia Mengabdi Balance: Jurnal Ekonomi
Effendi Effendi
Program Studi Pendidikan Kimia FKIP Universitas Sriwijaya
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Environmental Science 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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Disain & Simulasi Rangkaian Pengatur Tegangan AC Enam Fasa Dengan Beban Resistif effendi, effendi; Fitriady, Fitriady
J-Innovation Vol. 12 No. 2 (2023): Jurnal J-Innovation
Publisher : Politeknik Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55600/jipa.v12i2.215

Abstract

Power electronics is a field that studies electronics applications related to electrical equipment that uses large amounts of power, one of the subject that studied is AC to AC converters. AC voltage regulator is a converter where the output frequency is the same as the input frequency of the voltage sources, while the RMS output voltage can be regulated. In this research the number of phases that used are six phases, and two SCRs that used to chopper the AC voltage wave that arranged it in revers for each phase.The control circuit is constructed by using an op-amp which functions as a comparator and several other basic electronic components. the simulation results that using PSIM software for several delay angles including 30o, 60o, 90o, 120o, and 150o produce rms voltage that is relatively the same as the analysis by using mathematically calculations, this difference is because the SCR gate delay angle is still done manually, in general the voltage regulator The six-phase AC in this study can work well.
PRAKTIKALITAS LKPD MAKROMOLEKUL BERBASIS ETNOSAINS TERINTEGRASI STEAM PADA PEMBELAJARAN KIMIA Alqhorina, Vivi; Effendi, Effendi
Jurnal Pendidikan Kimia Universitas Riau Vol 9, No 1 (2024)
Publisher : Fakultas Keguruan dan Ilmu Pendidikan (FKIP), Universitas Riau (UNRI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/jpk-unri.v9i1.7856

Abstract

This study aims to determine the practicality of the macromolecule LKPD (Student Worksheet) Based on ethnoscience integrated STEAM (Science, Technology, Engineering, Arts, and Mathematics) in chemistry learning for class XII SMA. The type of research used in this research is research and development or R&D (Research and Development) with a 4-D development model. The subjects of this study were 2 people chemistry teacher and 23 new students of the Chemistry Department, Faculty of Mathematics and Natural Sciences, Padang State University in 2022. Based on the results of the study, the assessment of the LKPD obtained a practicality value of 92.8% which was included in the very practical category. This study concludes that the Ethnoscience-based STEAM-based macromolecular worksheets in chemistry learning for class XII SMA are included in the practical category and are suitable for use in learning.
Evolusi Gerakan Salafisme: Dari Masa Ibnu Taymiyyah Sampai Muhammad Bin Abdul Wahab Nurfalina, Yuliana; Effendi, Effendi
Jurnal Kawakib Vol 5 No 1 (2024): Studi Keislaman
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/kwkib.v5i1.180

Abstract

Salafism, a reformist movement that follows a school of Islamic understanding unaffected by Hellenism. Its aim is to maintain the views of the salaf scholars. The author uses the historical method by collecting data through library research sourced from books, articles, and other related information. The results of this study discuss various Salafi schools that emphasize three main characteristics in their teachings, namely placing Islamic law (sharia) above reason, avoiding rationalist interpretations, and upholding the text of the Quran and Hadith. Of course, this is closely related to the influence of thinkers such as Ibn Taymiyyah who was the main thinker, followed by Muhammad bin Abdul Wahab as his successor
Design and Application Prototype of soft starting Three-Phase AC Motor by Using Analog Electronics Control for Teaching Aids of Power Electronics Practice Effendi, Effendi; Zakwansyah, Zakwansyah
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID385

Abstract

In general, palm oil processing factories, from fresh fruit bunches to Crude Palm Oil, require three-phase electric motors to drive or rotate it. The problems that often arise when using three-phase electric motors simultaneously in large numbers will result in very large surges in the electric current, which can affect the performance of electronic devices. To overcome this problem, a prototype of a three-phase AC voltage regulator circuit was made by adjusting the SCR triggering delay angle using an analog electronics equipment control that can be used for three-phase motor soft start applications in a palm oil factory. This prototype will be used as a learning tool for the practical for Aceh Polytechnic students for power electronics courses. This system is built with a method where the three-phase source is first lowered using a transformer arranged in a star on the primary and secondary sides, then each voltage is compared to the ground using an IC LM324, which aims to produce pulses wave. This pulse then connected to a triangular wave generator circuit, this triangular wave is then compared with the DC source voltage from the potentiometer, which aims to regulate the SCR triggering angle of SCR via MOC3063 driver, where the load used is resistive and connected in a star. The measurement using an oscilloscope and observing the change of triggering angle for several variations of each phase, the different Vrms voltage between measurements compared to mathematical analysis influenced by several factors, including, the transformer is made of three transformers that not identically, the electronic components used are not in ideal condition, and observations on the oscilloscope are carried out visually using the eye and manually adjusting the potentiometer rotation so that the level of measurement accuracy between one person and another will produce different values.
Disain & Simulasi Rangkaian Pentriger SCR Untuk Penyearah Terkendali Setengah Gelombang Tiga Fasa Effendi, Effendi; Haikal, M. Agil
Jurnal JEETech Vol. 4 No. 2 (2023): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v4i2.4209

Abstract

One of the sub-subjects that studied in the power electronics course is the AC to DC converter in the form of a three-phase half-wave controlled rectifier where the output voltage can be controlled by adjusting the SCR gate trigger delay angle, in this research the author design and simulates an SCR triggering circuit for three-phase half-wave controlled rectifier where the components that used among others a three-phase step down transformer where the output functions as a reference signal to determine the starting point (30o) and end point (150o) of the triggering delay angle, also used as a power source for the system, the Op-Amp functions as a comparator for a three-phase rectifier (Vd) with a DC voltage (Vreference), it also functions to compare a triangle wave with a DC voltage to control the delay angle or trigger angle (α) of the SCR. The trigger pulses that given to the SCR1, SCR2, and SCR3 are carried out simultaneously in the same time by using one pulse, the average output voltage resulting from the SCR trigger circuit design in this research is relatively the same as the value obtained using mathematically calculations where the load used in form of resistive
Development of Steam-Pjbl Integrated LKPD on Acid and Based Materials For Class XI SMA Putri, Shella Dewanti; Effendi, Effendi
Journal of Educational Sciences Vol 7. No. 2. April 2023
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.2.p.148-159

Abstract

This study aims to develop teaching materials in the form of Student Activity Sheets (LKPD) which are integrated in Science, Technology, Engineering, Arts and Mathematics – Project-Based Learning (STEAM-PjBL) on Acids and Bases material and are used to determine the level of validity and practicality of the LKPD that is used. developed. This research is a research (R&D) with a 4-D development model. This 4-D model has four stages, namely the stages of define, design, develop and disseminate. However, the dissemination stage was not carried out. This study used instruments in the form of content and construct validation questionnaires, teacher and student response questionnaires. This LKPD was validated by five experts consisting of a Chemistry lecturer (FMIPA UNP) and a chemistry teacher. The validation data obtained were analyzed using the v Aiken scale, while the practicality data were analyzed using a comparison of students' scores with students' maximum scores. Based on the validation questionnaire that has been analyzed, it can be concluded that the LKPD developed is valid with a v value of 0.86 with a very valid category. While the practicality of teachers and students obtained NP values of 0.85 and 0.89 with very practical categories.
Development of Steam-Pjbl Integrated LKPD on Molecule Shape Materials for Class X Senior High School Pratiwi, Fefiola Isra; Effendi, Effendi
Journal of Educational Sciences Vol 7. No. 2. April 2023
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.2.p.213-223

Abstract

This study aims to produce STEAM-PjBL (Science, Technology, Engineering, Art and Mathematics-Project Based Learning) integrated LKPD on the material of Molecular Forms and determine the level of validity and practicality of the resulting LKPD. This research is a Research and Development (R&D) research using a 4-D model which consists of four steps: define, design, develop, disseminate. This research is limited to the design stage. The research instrument is a validity sheet and a practical sheet. The LKPD was validated by 6 validators consisting of 3 chemistry lecturers from FMIPA UNP and 3 chemistry teachers at SMA N 14 Padang. The LKPD was tested by 3 chemistry teachers and 30 students in class XI MIPA 5 SMA N 14 Padang. The validity data used the Aiken's v Scale and the practical data used a comparison of the students' scores with the maximum scores of students. The average Aiken's v scale is 0.89 with a very valid category. While the practicality of teachers and students obtained NP values of 0.90 and 0.87 with very practical categories.
Dimensi Partisi Graf Thorn dari Graf Kincir ?Wd?_2^m untuk m=1,2,3 Zayendra, Siska -; Mardhaningsih, Auli; Yulianti, Lyra; Effendi, Effendi
JMPM: Jurnal Matematika dan Pendidikan Matematika Vol 4 No 1: March - August 2019
Publisher : Prodi Pendidikan Matematika Universitas Pesantren Tinggi Darul Ulum Jombang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26594/jmpm.v4i1.1434

Abstract

Misalkan G = (V, E)  adalah  suatu  graf terhubung.  Himpunan  titik  V(G) dipartisi  menjadi  beberapa  partisi,  dan  ? = {S1, S2, ..., Sk } sebagai  himpunan yang berisikan  k-partisi  tersebut.  Misalkan  v ? V (G),  representasi  v terhadap ? didefinisikan sebagai r(v|?)  = (d(v, S1), .., d(v, Sk )).  ? disebut  partisi  penye- lesaian jika setiap  titik  di G mempunyai  representasi  yang berbeda  terhadap ?. Kardinalitas yang minimum dari partisi  penyelesaian disebut  dimensi partisi  dari G, ditulis pd(G). Thorn  dari graf G, dengan parameter l1, l2, . . . , ln diperoleh dengan menambahkan daun sebanyak li ke titik vi  dari graf G, untuk  i ? {1, . . . , n}, dengan  li  ? 1.  Graf  thorn  dari  graf G dinotasikan  dengan  T h(G, l1, l2 , . . . , ln ). Pada  jurnal ini ditentukan dimensi partisi  graf thorn  dari graf kincir W d2m   untuk m = 1, 2, 3, dinotasikan  dengan T h(W d2m , l0 , l1, . . . , l2m ), untuk  i = 0, 1, 2, .., 2m.Kata kunci: Dimensi partisi,  graf thorn, graf kincir
Efforts to Optimize Injector Performance for The Combustion Process in The Diesel Generator on The Mt. Gas Patra 3 Ardhika K, Wildan; Alamsyah, Jaya; Effendi, Effendi; Mangatur Tampubolon, Brenhard
Greenation International Journal of Engineering Science Vol. 1 No. 3 (2023): (GIJES) Greenation International Journal of Engineering Science (September 2023
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v1i3.53

Abstract

The injector is a component that functions to atomize fuel in the combustion process, the performance of this injector is very influential on whether or not the combustion process is complete in a diesel generator. The combustion process is very important so that the diesel generator gets optimal performance so that it can properly supply the electricity needs on board. The research method used is descriptive qualitative using data analysis techniques using fishbone diagrams and using data collection techniques through interviews, observation and documentation studies. The indications that appear about the not optimal fogging is the high temperature of the exhaust gas, the exhaust gas is black in color and detonation appears. After analysis, several causes were found, one of which was a lack of pressure on the injector.
Efforts to Optimize Injector Performance for The Combustion Process in The Diesel Generator on The Mt. Gas Patra 3 Ardhika K, Wildan; Alamsyah, Jaya; Effendi, Effendi; Mangatur Tampubolon, Brenhard
Greenation International Journal of Engineering Science Vol. 1 No. 3 (2023): (GIJES) Greenation International Journal of Engineering Science (September 2023
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v1i3.53

Abstract

The injector is a component that functions to atomize fuel in the combustion process, the performance of this injector is very influential on whether or not the combustion process is complete in a diesel generator. The combustion process is very important so that the diesel generator gets optimal performance so that it can properly supply the electricity needs on board. The research method used is descriptive qualitative using data analysis techniques using fishbone diagrams and using data collection techniques through interviews, observation and documentation studies. The indications that appear about the not optimal fogging is the high temperature of the exhaust gas, the exhaust gas is black in color and detonation appears. After analysis, several causes were found, one of which was a lack of pressure on the injector.
Co-Authors Abd. Rasyid Syamsuri Afriyani, Sicilia Agus Aan Adriansyah Agustina, Nika Rosa Aidil Fitri, Aidil Alamsyah, Jaya Alimatu Fatmawati Alqhorina, Vivi Anisatur Rofiqah, Siti Araska, Wahyu Arazka, Wahyu Ardhika K, Wildan Arini Rosa Sinensis Arlana, Terry Arlis, Angga Putra Astalini Astalini Azhar Affandi Azra, Azmi Badi’ah, Siti Badruzaman Badruzaman, Badruzaman Bandjar, Fitri Kadarsih Budhi Setianto Diah Kartika Sari Dwi Agus Kurniawan Dwi Andriani, Dwi Dwina Archenita Eka Ad’hiya Ekasari, Febri Eldiswari, Zikra Ernawati Ernawati Fakhruddin Fakhruddin Fatmir Edwar Firdaus, T Fitri, Ernarisa Fitriady Gusnita, Riza Haikal, M. Agil Harianto, Dedy Hartono Hartono Hijra, Reza Husein, Anggun Lestary Husni, Alya Miftahul IDA RAHMAWATI Ida Sriyanti Indra Irawan Indriati, Bela Iwan Sidharta Karmila, Hartatik Nila Ketang Wiyono Khanifah, Yani Kiki Muhamad Hakiki Leni Marlina Listiana, Devi Lukman Murdiansyah, Lukman Malawat, Siti Rabida Nurhasanah Mangatur Tampubolon, Brenhard Mardhaningsih, Auli Mardhaningsih, Auli Masykuroh, Siti Melda Yunita Muhammad Hatta Mujiono Mujiono Mursilah, Mursilah Musofa, Ade Mustofa, M.Iqbal Muzakki, Haris Nadiah, Nur Nahumarury, Salmin Safril Neswati Neswati Nidayati, Yura Nikmatus Sa’adah Ningsih, Dwi Putri Sulistiya Nugraha, Aadi Nurfalina, Yuliana Nuryana, Nila Oktaviaroza, Oktaviaroza Oktrison, Oktrison Oni Guspari Pratiwi, Fefiola Isra Prices, Afrizal Putra Priscylio, Ghery Puspitahati, Riski Putri Putra, Roni Tri Putri, Shella Dewanti Qurotul Aini Raberta, Yulpa Rachman, Fuad Abd Rachman, Fuad Abdur Rahmat Hidayat Rahmi Susanti Raimon Raimon, Raimon Rika Puspita Sari Rinaldo, Rinaldo Rohmah, M Rosdiana Rosdiana Safwan Safwan, Safwan Samsul Rizal Sayuti, Kesuma Sekta, Masri Juang Sholikahah, Ainun Ummi Sinensis, AR Sri Enggar Kencana Dewi Subriadi, Fejri Sugiyarto Sugiyarto Sumaryanti Sumaryanti Sunandar, Dwi Sunandar, Dwi Syafira, Annisa Syiam Sholekhah, Eka Thoha Firdaus Vernando, Vero Gusri Wahid Gunarto, Wahid Warella, Juen Carla Widayanti Widayanti Winda Fitria Yulianti, Lyra Yusi, Suryani Zakwansyah Zakwansyah, Zakwansyah Zayendra, Siska - Zayendra, Siska -