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SYNTHESIS AND CHARACTERIZATION OF HPMC/HAp/Fe3O4 COMPOSITE FOR HYPERTHERMIA APPLICATION Muflikhah Muflikhah; Wildan Zakiah Lubis; Irma Septi Ardiani; Khoirotun Nadiyyah; Sulistioso Giat Sukaryo
Jurnal Sains Materi Indonesia Vol 21, No 4: JULY 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.4.6023

Abstract

SYNTHESIS AND CHARACTERIZATION OF HPMC/HAp/Fe3O4 COMPOSITE FOR HYPERTHERMIA APPLICATION. Magnetic material become subject of intense research for hyperthermia application, and injectable magnetic hyperthermia for bone cancer is one of this research interest. In this study, composite of hydroxyapatite (HAp) and Fe3O4 in Hydroxypropyl-methyl cellulose (HPMC) matrix (HPMC/HAp/Fe3O4) has been synthesized in gel form that are expected can be applied for injectable bone substitute (IBS) in hyperthermia therapy. Composites were made using conventional methods by mixing HAp powder with ferrofluid Fe3O4 in HPMC solution. The composition of the composites were varied with the mass comparison of HPMC: HAp: Fe3O4 was 1: 0: 0; 1: 3: 0; 1: 2: 0.5; 1: 1: 0.25; and 1: 0: 3. The physical, chemical, and magnetic properties of the composites were characterized using X-Ray Diffractometer (XRD), Fourier Transform Infrared Spectrometry (FT-IR), Particle Size Analyzer (PSA), and Vibrating Sample Magnetometer (VSM). The XRD characterization results of the HPMC/HAp/Fe3O4 composite showed the crystalline phase of the constituent components. Saturation magnetization of the HPMC/HAp/Fe3O4 composite was 2.72 emu/g and 1.79 emu/g for the composition of 1: 2: 0.5 and 1:1:0.25 respectively. HPMC/HAp/Fe3O4 composite has superparamagnetic and biocompatible properties, so that can be applied as IBS in hyperthermia therapy for bone cancer.
ANALYSIS OF ACTIVATED CARBON (PETUNG BAMBOO)/LATEX COMPOSITE AS X-BAND WAVE-ABSORBING MATERIAL Khoirotun Nadiyyah; Dwi Wahyu Hardiyanto; Dwi Irma Aprilia; Rizky Firmansyah; Nurul Amaliya Triyuliana; M. Zainuri
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 2 (2023): JOP (Journal Online of Physics) Vol 8 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i2.23851

Abstract

In maintaining the sovereignty of a country, especially in border regions was needed defense tools that had the latest technology, such as stealth technology. Stealth technology was applied to military ships or aircraft so that they could not be detected by Radio Detection and Ranging. Stealth technology in this research was realized by coating the ship's or aircraft's body using RAM (Radar Absorbing Material). RAM could be composed of dielectric materials, such as activated carbon. The activated carbon was synthesized from Dendrocalamus Asper. This research aimed to analyze the proper of composition the composite and thickness of the RAM for the X-band wave range. The methods were carbonization, activation by KOH and HCl solutions, and characterization. The characterizations were by XRD, FTIR, and SEM to identify the active carbon phase, and VNA to determine the value of reflection loss. The variations in this research were composite composition (7:3, 9:1) and thickness (1mm, 3mm). And obtained that it has been formed a composite of activated carbon of petung bamboo and latex of rubber tree, which is indicated by the formation of two broad peaks in the diffraction pattern, the presence of band groups C=C, C-C, C-H, C-O, O-H, and morphology with a porous structure. In addition, the highest reflection loss is obtained for the 9:1 composite and thickness of 3 mm, which reached -17.25 dB at a frequency of 9.32 GHz.
DESAIN KELAS MOOCs DIGITAL ASESMEN UNTUK MENINGKATKAN PROFESIONALISME GURU DI ERA DIGITAL Zakirman Zakirman; Dodi Sukmayadi; Rika Aprianti; Widiasih Widiasih; Khoirotun Nadiyyah
Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan Vol 14, No 2 (2023): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/paedagoria.v14i2.14008

Abstract

Abstrak: Covid-19 telah memberikan dampak perubahan dalam berbagai sektor, salah satunya dalam bidang Pendidikan. Tren pembelajaran berkonsepkan teknologi menjadi perhatian utama selama masa pandemi covid-19. Setiap guru dituntut untuk terampil dan mampu beradaptasi secara cepat dengan kebutuhan teknologi dalam pembelajaran. Masih terbatasnya kemampuan guru dalam mengintegrasikan teknologi seperti salah satunya teramati dalam skema pemberian tugas dan penilaian hasil belajar. Kurangnya pengalaman dan kemampuan dalam mengelola sistem penialaian berbasis digital memberikan peluang untuk dikembangkannya sebuah kelas pelatihan dengan topik penilaian hasil belajar berbasis online (digital assessment). Tujuan dari penelitian ini adalah untuk menghasilkan online course (MOOCs) pada topik pengelolaan penilaian hasil belajar secara online. Jenis Penelitian ini adalah Penelitian dan Pengembangan (R & D), dengan model pengembangan yang dipilih adalah Plomp. Tahapan penelitian sesuai dengan model Plomp meliputi 3 langkah, diantaranya: Preliminary Research, Prototyping Phase (Self evaluation, one to one, expert review, small group dan field test), Assessment Phase. Topik yang dikembangkan pada online course dengan fokus pengelolaan penilaian hasil belajar meliputi: Quizizz, Google Form, Wordwall, EdApp, Quizlet, QuizMaker, Nearpod dan Kahoot. Karena keterbatasan penelitian, ujicoba hanya dilakukan dalam skala kecil.Abstract:  Covid-19 has had an impact on changes in various sectors, one of which is in the field of education. The trend of technology-concept learning is a major concern during the COVID-19 pandemic. Every teacher is required to be skilled and able to adapt quickly to technological needs in learning. The limited ability of teachers to integrate technology, one of which is observed in the scheme of assigning assignments and assessing learning outcomes. The lack of experience and ability in managing digital-based assessment systems provides an opportunity for the development of a training class with the topic of online-based learning outcomes assessment (digital assessment). The purpose of this study is to produce online courses (MOOCs) on the topic of managing online learning outcomes assessment. This type of research is Research and Development (R & D), with the development model chosen being Plomp. The research stages according to the Plomp model include 3 steps, including: Preliminary Research, Prototyping Phase (Self evaluation, one to one, expert review, small group and field test), Assessment Phase. Topics developed on online courses with a focus on managing learning outcomes assessment include: Quizizz, Google Form, Wordwall, EdApp, Quizlet, QuizMaker, Nearpod and Kahoot. Due to research limitations, trials are only conducted on a small scale.
The need for electronic games to support student involvement and concentration in learning zakirman zakirman; Widiasih Widiasih; Rika Aprianti; Khoirotun Nadiyyah
Jurnal Pijar Mipa Vol. 18 No. 4 (2023): July 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i4.5213

Abstract

The urgency of the potential use of electronic games in learning is in line with the increasingly advanced technology and as an effort to increase student engagement and concentration. Student involvement and concentration is the key so students can have a learning experience. One alternative solution is the development of electronic games to support learning. The electronic game developed in this study uses Unity software. This type of research is descriptive and qualitative and aims to describe the need for electronic games to support student involvement and concentration in learning. Data collection techniques using questionnaires. The questionnaire was made using G-Form containing 7 question items in the form of checklists or descriptions in each item answer column according to the respondent's opinion. The questionnaire was distributed online to respondents who were teachers and lecturers from various educational units in the city of Padang. Based on the study's results, electronic games are needed to increase student involvement and attention in learning activities. Games make learning fun and varied to stimulate students' interest in learning. Students with a high interest in learning will show engagement and involvement to do something diligently for a long time, be easier to concentrate, remember, and not quickly bored with what is being learned.
The Development of Instagram Filter-Based Learning Media for Mathematics in Junior High School Valeria Yekti Kwasaning Gusti; Uliya Khoirun Nisa; Rika Aprianti; Khoirotun Nadiyyah; Egi Ryan Aldino
Indo-MathEdu Intellectuals Journal Vol. 4 No. 1 (2023): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v4i1.62

Abstract

The rise of the digital age and STEM-based occupations (Science, Technology, Engineering, and Mathematics) has increased the significance of mathematics skills in the workplace and in the classroom. At the same time, the usage of social media such as Instagram, as well as Instagram's effects and filters, has become widespread among adolescents, particularly students. The purpose of this study is to develop an Instagram filter-based learning media for junior high school students. The material used in the development of the Instagram filter is the material on Relations and Functions that is difficult to understand by students based on a student needs questionnaire. This study developed an Instagram-based learning media by administering validation and feasibility tests to material experts, media experts, and student response questionnaires in the form of a small-scale trial. The designed Instagram filter-based learning media received an average score of 83.22 percent with a very good interpretation based on the validation and feasibility tests.
The Potential of Electronic-Games In Harmonizing Differentiated Learning for Alpha Generation Zakirman Zakirman; Widiasih Widiasih; Dodi Sukmayadi; Rika Aprianti; Khoirotun Nadiyyah
Journal of Educational Sciences Vol 7, No 4: October 2023
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.4.p.609-621

Abstract

The challenge of using rapid technology occurs in alpha generation learning activities, giving rise to differentiated learning. The variety of student learning styles is one of the benchmarks in differentiated learning so that supporting learning media in the form of electronic-games is needed. This study aims to describe  the potential of electronic-games in harmonizing differentiated learning for generation alpha. This type of research is descriptive qualitative. Data collection techniques using questionnaires. The questionnaire was distributed online to respondents who were students of SMP Subulussalam Kota Padang Pariaman. The use of electronic-games in learning activities is one manifestation of differentiated learning. Differentiated learning views students differently and dynamically, where teachers see learning with various points of view. Novelty: Important contributions from the results of this research claim that the use of electronic games can support differentiated learning for the alpha generation.
A New Pattern to Improving Student Physics Learning Outcomes Zakirman; Widiasih Widiasih; Dodi Sukmayadi; Rika Aprianti; Khoirotun Nadiyyah
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.3324

Abstract

The low student learning outcomes in Physics can be observed by the decreasing average student learning outcomes in the last 3 years at SMA 1 Suger. Lack of precise strategy selection is a major factor in influencing student learning outcomes in Physics. In addition to learning strategy factors, students' initial abilities can be considered by teachers in choosing learning strategies to improve student learning outcomes. The purpose of this study was to compare students' learning outcomes in physics between classes using guided inquiry and discovery strategies by considering initial ability as a moderator variable. This type of research is a quasi-experimental, the sampling technique used is random sampling. This research was conducted at SMA 1 Suger, Padang Pariaman Regency. The results of the study show 1) there is a significant difference between the learning outcomes of physics students who learn to use guided inquiry and discovery strategies, 2) there are significant differences in learning outcomes between students with high and low initial abilities, 3) there is no interaction between the use of strategies and abilities early in influencing student learning outcomes.
PENGEMBANGAN MEDIA KONKRET BERBASIS RME PADA PEMBELAJARAN BANGUN RUANG Uliya Khoirun Nisa; Valeria Yekti Kwasaning Gusti; Khoirotun Nadiyyah
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol 7, No 1 (2024): February 2024
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v7i1.1717

Abstract

Tujuan dari penelitian ini adalah untuk mengembangkan media konkret berbasis realistic mathematic education (RME) pada pembelajaran matematika materi bangun ruang kubus dan balok. Setelah selesai dikembangkan, dilakukan uji kelayakan terhadap media konkret yang dikembangkan dan dilakukan perbaikan sesuai dengan saran yang diberikan. Metode penelitian yang digunakan adalah metode penelitian dan pengembangan yang mengadaptasi model ADDIE (Analysis, Design, Development, Implementation, Evaluation). Berdasarkan hasil analisis kebutuhan, diperoleh informasi bahwa dibutuhkan desain media konret yang sesuai dengan prinsip RME untuk meningkatkan pengalaman belajar siswa. Subjek dalam penelitian ini adalah siswa kelas VI SD Muhammadiyah Klepu. Instrumen penelitian yang digunakan dalam penelitian ini adalah skala penilaian produk oleh ahli materi dan ahli media, angket penilaian oleh guru dan angket respon siswa. Hasil dari penelitian ini adalah media konkret yang dilengkapi dengan LKS berbasis RME pada pembelajaran bangun ruang. Hasil uji kelayakan menurut ahli media mendapat skor akhir 86% dengan kriteria sangat layak, dan mendapat skor kelayakan sebesar 92% dengan kriteria sangat layak dari ahli materi. Selain itu, media konkret berbasis RME yang dikembangkan juga mendapatkan nilai 94% dan kriteria sangat baik dari guru dan mendapat respon positif sebesar 100% dari siswa kelas VI SD Muhammadiyah Klepu. 
The Development of Physics E-Module CTL-Based for Reflection and Refraction of Light Topic Aprianti, Rika; Nadiyyah, Khoirotun; Gusti, Valeria Yekti Kwasaning; Herliana, Fitria
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 9 No 1 (2023): JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika), Volume 9 Issue 1, J
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/1.09103

Abstract

This study aims to develop an e-module based on Contextual Teaching and Learning (CTL) as a physics learning media and to test its feasibility. The study employed a research and development method (R & D). This research produces a digital learning media for the Physic topic of reflection of light and refraction of light, which can assist students in studying independently by following the syntax of CTL. The e-module combines video, audio, and interactive quiz features. The development process was conducted through the ADDIE model where the researcher evaluate every step in the development process. The e-module was developed according to the syntax of CTL. Validation of the e-module was conducted during the development steps. The validation results by the material expert gained a score of 85.09%, while the media expert gained a score of 82.14%. The e-module was implemented in a small group of nine students and gained a score of 84.71%. These scores mean that the e-module was considered feasible and very good.
Peningkatan Pengetahuan Mengenai Mitigasi Bencana Gempa Bumi di Cianjur Aprianti, Rika; Khoirotun Nadiyyah; Zakirman; Widiasih; Heni Safitri; Tuti Purwoningsih
Jurnal Inovasi Pengabdian Masyarakat Pendidikan Vol. 4 No. 1 (2023)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jurnalinovasi.v4i1.28882

Abstract

Indonesia adalah salah satu negara yang berada pada jalur Ring of Fire, yaitu jalur yang dilalui pegunungan aktif. Posisi wilayah Indonesia inilah yang membuat wilayah Indonesia rentan mengalami gempa bumi. Daerah jawa barat dilalui oleh banyak patahan. Pergesaran patahan inilah dikatakan sebagai penyebab terjadinya gempa di Cianjur pada tanggal 21 November 2022. Kegiatan Pengabdian kepada Masyarakat ini bertujuan untuk meningkatkan pengetahuan mengenai mitigasi bencana gempa bumi yang meliputi langkah sebelum terjadi gempa bumi, saat terjadi gempa bumi, sesaat setelah gempa bumi sampai dengan langkah pasca gempa bumi terjadi. Kegiatan pengabdian kepada masyarakat ini dilakukan di SDN Sukamaju 1 Cianjur sebagai mitra. Peserta yang dilibatkan adalah siswa dan guru sebagai pendamping. Metode penyampaian materi mitigasi bencana gempa bumi adalah ceramah yang dilakukan dengan pemaparan materi secara interaktif dengan adanya tanya jawab serta kuis disela-sela pemaparan. Dilakukan juga simulasi gempa bumi dengan media lagu. Untuk mengetahui adanya peningkatan pengetahuan siswa terhadap materi mitigasi bencana gempa bumi, dilakukan pre-test untuk mengetahui pengetahuan awal siswa dan post-test untuk mengetahui pengetahuan siswa setelah mengikuti pemaparan materi. Hasilnya menunjukan rata-rata skor pre-test adalah 5,10 sedangkan rata-rata skor post-test adalah 7,43. Dapat disimpulkan dari kegiatan ini ada peningkatan pengetahuan mengenai mitigasi bencana gempa bumi berdasarkan peningkatan rata-rata skor pre-test dan post-test. Diharapkan peningkatan pengetahun siswa dapat mengurangi resiko bencana gempa bumi dan korban jiwa.