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All Journal Agroland : Jurnal Ilmu-Ilmu Pertanian Buletin Studi Ekonomi Proceedings of Annual International Conference Syiah Kuala University - Social Sciences Chapter Ekonomi dan Keuangan PIONIR: Jurnal Pendidikan JURNAL PILAR JIM Pendididikan Bahasa dan Sastra Indonesia Jurnal Pendidikan Dasar Jurnal Ilmiah Didaktika AL-USWAH: Jurnal Riset dan Kajian Pendidikan Agama Islam Jurnal Otomasi Kontrol dan Instrumentasi Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Tadabbur: Jurnal Peradaban Islam Refleksi: Jurnal Filsafat dan Pemikiran Islam Kuriositas: Media Komunikasi Sosial dan Keagamaan Naskhi: Jurnal Kajian Pendidikan dan Bahasa Arab Akrab Juara : Jurnal Ilmu-ilmu Sosial Jurnal Ilmu Komputer dan Sistem Komputer Terapan (JIKSTRA) Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika Jurnal Agroekoteknologi dan Agribisnis Jurnal Ilmiah Berkala: Sains dan Terapan Kimia ELIT JOURNAL Electrotechnics And Information Technology KOMUNIDA: Media Komunikasi dan Dakwah Naskhi: Jurnal Kajian Pendidikan dan Bahasa Arab

Ramli Ramli

Unknown Affiliation

Author-ID : 2484970

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Physics Social Sciences Other

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Mannheim Membaca Tafsir Quraish Shihab dan Bahtiar Nasir Tentang Auliya’ Surah Al-Maidah Ayat 51 Ramli Ramli
Refleksi: Jurnal Filsafat dan Pemikiran Keislaman Vol 18, No 1 (2018)
Publisher : UIN Sunan Kalijaga Yogyakarta

The author will examine al-Maidah verse 51 according to Quraish Shihab and Bachtiar Nasir, on the one hand, which as the holy book of Muslims with social phenomena arising from events in the Thousand Islands, on the other. It will be analyzed using the sociology of Mannheim’s knowledge. Quraish Shihab interprets auliya ‘not just one meaning: leader, because basically the word comes from a close meaning. So he, in al-Maidah verse 51, then raises the meaning of supporters, defenders, patrons, lovers and more important: all of which refer and have affiliation of the meaning of closeness. So it can be concluded in this conclusion that Quraihs Shihab is extrinsically disagreeing with the leader as the only meaning in the verse. In contrast to Quraish Shihab, Bachtiar Nasir actually interpreted auliya ‘as a leader. This meaning is based on the asbab al- nuzul which he describes in Tadabbur al-Qur’an, that the historicity in this verse has a leadership precedent.[Penulis akan menelaah Al-Maidah ayat 51 menurut Quraish Shihab dan Bachtiar Nasir, di satu sisi, yang sebagai kitab suci umat Islam dengan fenomena sosial yang muncul akibat dari peristiwa di Kepulaun Seribu, di sisi yang lain. Ini akan dianalisis menggunakan sosiologi pengetahuan Mannheim. Quraish Shihab menafsirkan auliya’tidak hanya satu makn: pemimpin, karena pada dasarnya kata tersebut berasal dari makna dekat. Sehingga ia, dalam Al-Maidah ayat 51 ini, kemudian memunculkan makna pendukung, pembela, pelindung, yang mencintai dan lebih utama: yang kesemuanya merujuk dan memiliki afiliasi makna kedekatan. Sehingga bisa disimpulkan dalam penutup ini bila Quraihs Shihab secara ekstrinsik tidak menyetujui pemimpin sebagai satu-satunya arti dalam ayat yang bersangkutan. Berbeda dengan Quraish Shihab, Bachtiar Nasir justru memaknai auliya’ sebagai pemimpin. Pemaknaan ini dilandasi oleh asbab al-nuzul yang ia jelaskan dalam Tadabbur al-Qur’an, bahwa kesejarahan dalam ayat ini memiliki preseden kepemimpinan.]

Penumbuhan Lapisan Tipis Material Sensor Giant Magnetoresistance Berstruktur Sandwich dengan Metode Sputtering Ramli Ramli; Mitra Djamal; Freddy Haryanto; Khairurrijal Khairurrijal
Jurnal Otomasi Kontrol dan Instrumentasi Vol 3 No 2 (2011): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2011.3.2.5

Material giant magnetoresistance (GMR) menjanjikan untuk diterapkan dalam bidang teknologi penting, salah satunya sebagai sensor medan magnet lemah. Sensor GMR memiliki kelebihan, yakni ukuran yang kecil, daya dan harga yang relatif rendah dibandingkan sensor-sensor magnetik lainnya serta sifat-sifat magnetik dan elektriknya dapat divariasikan dalam rentangan yang sangat lebar. Tujuan dari penelitian ini adalah untuk melihat efek giant magnetoresistance dari lapisan tipis sandwich NiCoFe/Cu/NiCoFe yang ditumbuhkan di atas substrat Si (100) dengan metoda dc-Opposed Target Magnetron Sputtering (dc-OTMS). Parameter penumbuhan yakni; suhu 1000C, laju aliran gas argon sebesar 100 sccm, tekanan 0,52 mTorr, dan tegangan dc 600 volt. Dalam paper ini, akan dibahas pengaruh ketebalan lapisan feromagnetik (NiCoFe) dan ketebalan lapisan non magnetik (Cu) terhadap sifat giant magnetoresistance dari sandwich NiCoFe/Cu/NiCoFe. Hasil pengukuran rasio magnetoresistance memperlihatkan bahwa ketebalan lapisan NiCoFe mempengaruhi nilai rasio GMR, serta makin tebal lapisan NiCoFe, makin kecil medan saturasi, yang ditandai dengan kurva rasio GMR yang makin runcing. Dalam struktur sandwich, kecilnya nilai rasio GMR saat ketebalan NiCoFe rendah, kemungkinan disebabkan oleh hamburan pada permukaan luar seperti antarmuka substrat-film atau buffer layer. Hamburan ini mempengaruhi nilai GMR saat ketebalan lapisan feromagnet lebih kecil dibanding panjang lintasan bebas rata-rata yang berhubungan dengan elektron ber-spin ke atas dan spin ke bawah. Demikian pula halnya dengan ketebalan lapisan non magnetik Cu juga mempengaruhi rasio GMR, dimana rasio GMR semakin berkurang dengan bertambahnya ketebalan lapisan Cu. Hal ini kemungkinan terjadi akibat peningkatan hamburan elektron konduksi yang melintasi lapisan pemisah non magnetik, yang mengurangi aliran elektron diantara lapisan-lapisan feromagnetik dan meningkatkan arus shunting, sehingga mengurangi nilai rasio GMR. Keywords: feromagnetik; giant magnetoresistance; lapisan tipis; NiCoFe,non magnetik, sensor GMR.

PENGARUH MODUL FISIKA MULTIMEDIA INTERAKTIF BERBANTUAN GAME DALAM MODEL PROBLEM BASED LEARNING TERHADAP CRITICAL THINKING SKILL SISWA KELAS X SMAN 4 PADANG Furkana Aulia; Djusmaini Djamas; Ramli Ramli
PILLAR OF PHYSICS EDUCATION Vol 9 (2017)
Publisher : Universitas Negeri Padang

One of humans quality is to have the ideal critical thinking skills. in fact, critical thinking skills of students still have not reached the ideal category. Critical thinking skills can be trained by physics. One solution to develop students' critical thinking skills is the use of teaching materials that use media such as interactive multimedia modules aided game and problem-based learning model. Purpose of this research is to found the influence of interactive multimedia modules aided game against the students' critical thinking skills. Type of this research is a quasi-experimental, research design with randomized control group only design. As the object of this study is to learn the material by using interactive multimedia module in a game-aided model of problem-based learning. The results showed that the working hypothesis which states that "there is a significant impact physics module-assisted interactive multimedia games in the model problem based learning to critical thinking skills class X SMA 4 Padang" acceptable in the significant level of 0.05 with the contribution of interactive multimedia modules aided game amounting to 32.51%. Then, module-assisted interactive multimedia game physics can be applied by teachers during the process of learning physics

PENGARUH PENERAPAN LEMBAR KERJA PESERTA DIDIK BERBASIS PENDEKATAN SAINTIFIK DALAM MODEL PEMBELAJARAN INQUIRY TERHADAP KOMPETENSI FISIKA PESERTA DIDIK KELAS X SMA NEGERI 13 PADANG Kurnia Heru Pratama; Hidayati Hidayati; Ramli Ramli
PILLAR OF PHYSICS EDUCATION Vol 9 (2017)
Publisher : Universitas Negeri Padang

One of the factors that lead to the lowness of lerners competence is less interesting learning process. The use of rare learning media worksheets make learners become less active in learning procces. This study purpose to determine the effect of worksheets based scientific approach in inquiry learning model toward learners competence of class X SMA Negeri 13 Padang. Type of this research is a quasi-experimental design with randomized control group only design. The population was all learners of class X SMA Negeri 13 Padang, academic year 2016/2017. The sampling technique used is purposive sampling. The reseaarch instruments used in this study are competent sheet (to examine attitude competence), result of final test (to measure knowledge competence), and perfomance assesment sheet (to measure skill competence). Data analyzed by testing the equality of two average. The equality of two average test is only to calculate competence value of knowledge dan skill, while attitude competence value is determine using result data description from each meeting. The result showed the average value of learner at two classes are 83.33 and 80.00 for knowledge competence, 85.90 and 81.16 foe skill competence. t testing obtained alternative hypothesis is accept for knowledge competence. t’ testing obtained alternative hypothesis is accept for skill competence. the conclusion is hypothesis stated that there is a significant effect in application-based worksheets learners the scientific approach in inquiry learning model toward physics competence of learners class X SMA Negeri 13 Padang

Pengaruh Penerapan Virtual Lab Berbantuan LKPD Menggunakan Model Pembelajaran Kooperatif Tipe Group Investigation Terhadap Kompetensi Peserta Didik Kelas XI SMAN 5 Padang Wahyu Kurnia; Hidayati Hidayati; Ramli Ramli
PILLAR OF PHYSICS EDUCATION Vol 10 (2017)
Publisher : Universitas Negeri Padang

Technological developments can be utilized in the manufacture of learning media that can increase the interest of learners to learn, make learners more active so as to enhance the competence of learners. One of the learning media that can increase the interest of learners is Virtual Laboratory LKPD Assisted Using Cooperative Learning Model of Group Investigation. The purpose of this research is to know the effect of Virtual Laboratory Supported by LKPD Using Cooperative Learning Model of Group Investigation Group on the competence of students of class XI SMAN 5 Padang. This tipe of research is Pre-Experimental Design with One Shot Case Study. Sampling is done by Purposive Sampling technique. From the data analysis for the three competencies obtained the following results: 1)The average score of knowledge competence of learners after using LKPD assisted virtual laboratory using cooperative learning model in practice activity is 84,09, 2) Use of LKPD assisted virtual laboratory using cooperative learning model type group investigation on knowledge competence with rvalue >rtable, percentage of influence 20,25%, and 3) the competence of the students’ skill has increased the general competence from the lab to the next practicum

PENERAPAN STRATEGI PEMBELAJARAN KONTEKSTUAL BERBASIS GAYA BELAJAR VAK (VISUAL, AUDITORI, KINESTETIK) TERHADAPA PENCAPAIAN KOMPETENSI SISWA KELAS VII SMP NEGERI 34 PADANG Wahda Salamah; Mahrizal Mahrizal; Ramli Ramli
PILLAR OF PHYSICS EDUCATION Vol 8 (2016)
Publisher : Universitas Negeri Padang

Every student has learning styles for receive information, but it tend at one of learning styles. The teacher should be using the student’s learning style with learning strategies. The background of this research is lack of implementation of learning strategies. The solution to solve this problem is to implement contextual learning strategy based VAK learning styles (Visual, Auditory, Kinesthetic). The population of this research is all students in grade VII at SMPN 34 Padang of academic year 2015/2016. The sample of this research use purposive sampling. Data of this reseach is the competence of science students as competence attitudes, knowledge and skill. The instrument this research is written test, observation sheet and performance assessment sheet. Data analysis on the competense of khowledge, spiritual, social and skill use equality test two averages with t’ is 3,8186; 2,224; 3,3987; 3,316 while for ttable is 2,0792; 6,575; 5,0372; 1,593. based on the hypothesis is concluded that there are significant means the implementation of contextual learning strategy based VAK learning styles (Visual, Auditory, Kinesthetic) on achievement of the knowledge and skills competence of students in grade VII at SMPN 34 Padang and there is no influence means the implementation of contextual learning strategy based VAK learning styles (Visual, Auditory, Kinesthetic) on achievement of the spiritual and skill competence of students in grade VII at SMPN 34 Padang

The effect of milling time on magnetite (Fe3O4) crystal structure made from volcanic minerals gathered from Mount Marapi, West Sumatra Maya Sri Anggraini; Ramli Ramli; Hidayati Hidayati
PILLAR OF PHYSICS Vol 10 (2017)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Indonesia is one of the archipelago countries rich in the abundant natural resources potential one of them is iron sand. Iron sand can be found in Mount Marapi located in West Sumatera Indonesia.Gunung is classified as the active volcano in Sumatra located in the district Agam. The existence of iron sand is only in the exploitation in the raw state (raw material) so it has a high selling value that is by knowing its characteristics. The characteristics of iron sand based on Crystal structure, the size of crystals and know the magnetite elements of iron sand that exist in the region Agam regency. This research is a type of experimental research conducted in the Materials Laboratory of Physics Department. In this study variations were performed on milling time. X-Ray Diffraction (XRD) is used to identify the phase, structure and size of crystals. X-Ray Fluorescence (XRF) is used to obtain data of magnetite content in iron basest before and after milling. In this study obtained XRD test data that due to increased time milling phase changes from hematite to magnetite. The increasing variation in milling time causes the change of magnetite structure from cubic structure to cubic structure. Increased milling time, magnetite crystal size increases up to a certain milling time and then decreases. As in the magnetite crystals before dimilling, 1.08 nm, after dimilling with 25 hours, 30 hours, 35 hours and 40 hours variations were obtained at 1.14 nm, 1.20 nm, 1.23 nm and 1.61 nm respectively. Furthermore, there was a decrease in the variation of mill-ing time of 45 hours obtained by 1.29 nm

Analysis of Fe3O4 thin film optical properties prepared from the iron sand of Tiram Beach, Padang Pariaman Regency, West Sumatra using sol-gel spin coating method. Nidya Yulfriska; Ramli Ramli; Yenni Darvina
PILLAR OF PHYSICS Vol 10 (2017)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Research on magnetic oxide is growing very rapidly. This magnetic oxide can be found in nature that is iron sand. Iron sand is a deposition of sand containing iron ore that many exist along the beach. One of the beaches in West Sumatra containing iron sand is Tiram Beach, Padang Pariaman District, Sumatera Barat. The content of iron sand is generally in the form of magnetic minerals such as magnetite, hematite, and maghemit. Magnetite contained in iron sand has excellent properties that can be developed into thin films that can later be applied to magnetic sensors. The purpose of this research is to investigate the optical properties of the Fe3O4 thin films, prepared from iron sand of Tiram Beach, Padang Pariaman District, Sumatera Barat by Sol-Gel Spin Coating Method. This type of research is an experimental research. The iron sand obtained from nature is first purified using permanent magnets, then made in nanoparticle size using the HEM-E3D tool. Then, the process of making thin film with sol-gel spin coating method. In this research variation of rotation speed of spin coating is 1000 rpm, 2000 rpm, 2500 rpm and 3000 rpm. The characterization tool in the research of optical properties analysis used is UV-VIS Spectrophotometer. The value of transmittance is 32,1%, 32,2% and 32,7% respectively. The absorbance value is 96,721% - 31,247%, 95,428% - 33,785% and 93,54% - 33,551% respectively. While the reflectance values are 33,2%, 33,7% and 34,2%, respectively. So it can be concluded that the greater the speed of rotation the thickness of the thin layer will be smaller, resulting in the transmittance and reflectance will be greater, while the absorbance will be smaller. Energy gap obtained from this research is 3,75 eV, 3,75 eV and 3,74 eV. So the average energy gap obtained is 3,75 eV

Effect of milling time on magnetite (Fe3O4) crystal structure made from volcanic minerals from Mount Talang, West Sumatra Yuli Pratiwi; Ramli Ramli; Ratnawulan Ratnawulan
PILLAR OF PHYSICS Vol 10 (2017)
Publisher : Department of Physics – Universitas Negeri Padang UNP

The available of iron sands in west sumatera only exploit in raw condition (raw material) so that the value of sell is low. One of solution to make higher value of sell is knowing it’s characteristic. Iron sands characteristic can be known based on crystal structure, the size of crystal and magnetite structure from iron sands around Kecamatan Lembah Jaya, Kecamatan Gunung Talang and Kecamatan Danau Kembar, Kabupaten Solok, Provinsi Sumatera Barat as the resut of milling time variation. This research aim are to investigate the influence of milling time to magnetite crystal and investigate the influence of milling time to size of magnetite crystal using X-Ray Diffraction. This is experiment research that have been done in Material Laboratory of Physics Departement. In this research, there is a variation of time milling. X-Ray Diffraction (XRD) is used in identification of structure dan size of crystal. X-Ray Flouresence (XRF) is used in gather the data of magnetite level in iron sands before and after milling. The result of this research shows that increasing time milling caused the change of fasa from hematite to magnetite. Increasing time milling variation cause the change of magnetite structure from rhombohedral to cubic structure. Increasing the time milling cause size of magnetite crystal increase up to certain time milling and then decrease, then some keep increase again. Such as a magnetite crystal before milling, 88,01 nm and after milling in 25 hours it becomes 71,10 nm, milling in 30 hours it becomes 78,63 nm. In 35 and 40 hours of milling, it decreases to 55,42 and 49,86 nm. In 45 hurs milling, it increases to 66,25. The smaller the size of crystal, the magnetite particle can be used as heavy metal binding that present in waste

Analysis of Fe3O4 thin film electrical properties prepared from iron sand at Tiram Beach, Padang Pariaman Regency, West Sumatra by using the sol-gel spin coating method Fitria Murti; Ramli Ramli; Yenni Darvina
PILLAR OF PHYSICS Vol 10 (2017)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Indonesia is a country that has a considerable amount of mining products such as iron sand that can be found along the beach, one of them is the Tiram Beach in Padang Pariaman district, West Sumatera. Iron sand can be applied to electronics, computing, and the automotive industry sector because it contains magnetic material. Magnetite iron sand is iron oxidation which has the strongest magnetic characteristic, which is made in nano size has ferromagnetic characteristic and has a wide application, the development of ferrite materials in the form of thin layer oriented to recording media and also can be used as a magnetic sensor device. The research is to inquire effect spin coating velocity on conductivity of thin layer.In the research, variation of spin coating velocity 1000 rpm, 2000 rpm, and 3000 rpm are done with the time of 60 seconds toward magnetite gel solution which has been sol-gel, after rotated then the thin layer formed is measured by using four point probe method. The result from research obtained conductivity value that is on velocity 1000 , 2000, and 3000 rpm conductivity value shows that the effect of spin coating velocity on the magnetite thin layer conductivity that is the higher it is spin coating speed, the higher it is the conductivity

Co-Authors Abd. Azis Hamzah Achmad Marzuki Akbar Susianto Anak Agung Istri Sri Wiadnyani Armia Armia Bangbang Hermanto Cut Zuriana Darma Yana Sara Darmawati Darmawati Djusmaini Djamas Erma Zevira Fataa Kusumattaqiin Ferdinan Ferdinan Fitria Murti Freddy Haryanto Furkana Aulia Hardin La Abu Hasaruddin Hasaruddin Hendra Heriansyah Hidayati Hidayati Imam Farih Iskandar Abdul Samad Khairurrijal Khairurrijal Kurnia Heru Pratama Kusno, Hendra Sanjaya Mahrizal Mahrizal Maya Shafida Maya Sri Anggraini Mitra Djamal Mohamad Rif'at Muhammad Syahruddin Muhammad Zihad Al Qaushar Najia Angraini Nidya Yulfriska Noorma Kurnyawaty Novitasari Eviyanti Nurhayati Nurhayati Nurhayati Nurhikmah Nurhikmah Rajab Bahry Rostina Taib Rusmin Saragih, Rusmin Ruth Casarena Saragih Salsabilla Julnadi Sartika Frinces J Sitorus Silfita Yani Subhayni, Subhayni Tauhid Hira Vicno Triwira Dhika Wahda Salamah Wahyu Kurnia Yenni Darvina Yofita Sandra, S.Pd., M.Pd., Zico Farlin, Dr. Budiwirman, M.Pd., Yuli Pratiwi Zulfah

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