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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 Development of Physics E-Module CTL-Based for Reflection and Refraction of Light Topic Rika Aprianti; Khoirotun Nadiyyah; Valeria Yekti Kwasaning Gusti; Fitria Herliana
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.
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.
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.
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.