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Usna, Sri Rahayu Alfitri
Universitas Andalas
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Pengabdian Untuk Meningkatkan Keterampilan Menyelesaikan Masalah Kinematika Pada Siswa Di Sma N 1 Gunung Talang Fardela, Ramacos; Adrial, Rico; Mardiansyah, Dedi; Muttaqin, Afdhal; Milvita, Dian; Usna, Sri Rahayu Alfitri; Firmawati, Nini; Oktamuliani, Sri; Irka, Feriska Handayani; Afdal, Afdal; Yusfi, Meqorry
Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Vol. 7 No. 1 (2024): Januari 2024
Publisher : STMIK Royal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33330/jurdimas.v7i1.2885

Abstract

Kinematika adalah cabang ilmu fisika yang fokus pada pemahaman gerakan benda, tanpa mempertimbangkan gaya yang berpengaruh padanya. Hal ini sering menjadi materi yang rumit bagi siswa di tingkat SMA, karena memerlukan pemahaman tentang konsep-konsep seperti kecepatan, percepatan, waktu, jarak, dan hubungan antara mereka. Universitas Andalas memiliki Program Studi S1 Fisika di bawah Departemen Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam. Setiap semster Departemen Fisika selalu mengadakan pengabdian kepada masyarakat sesuai dengan salah satu Tri Dharma Perguruan Tinggi. Salah satu pengabdian yang rutin dilakukan Departemen Fisika setiap semester adalah membina SMA di lingkungan Sumatera Barat. Pengabdian tentang pengayaan konsep kinematika di SMA dapat menjadi salah satu upaya yang sangat penting untuk membantu siswa mengatasi kesulitan dalam memahami konsep kinematika.  Pengabdian ini melibatkan mitra SMA N 1 Gunung Talang yang berada di Kabupaten Solok, Provinsi Sumatera Barat bertujuan untuk meningkatkan pemahaman siswa tentang Konsep Kinematika di SMAN 1 Gunung Talang. Pengabdian ini dilakukan dalam tiga tahap yaitu persiapan, kegiatan inti yaitu penyampaian materi dan evaluasi proses pengabdian. Hasil menunjukkan terjadi peningkatan pengetahuan tentang materi kinematika berdasarkan pembandingan hasil pre-test dan post test yaitu sebesar 33,3 %.
Sintesis dan Karakterisasi Struktur dan Sifat Magnet Nanokomposit Fe3O4@PEG:ZnO Astuti Astuti; ihda khaira; syukri Arief; Sri Rahayu Alfitri Usna
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 2 (2022): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i2.58514

Abstract

Fe3O4@PEG:ZnO nanocomposites were synthesized by the coprecipitation method with various of the samples were Fe3O4, Fe3O4@ZnO (1:1), Fe3O4@PEG: ZnO (1:2), and Fe3O4@ PEG: ZnO (1:3). The samples were synthesized with variation in the concentration of ZnO to Fe3O4. The concentration ratio of (Fe3O4:ZnO) were (1:1), (1:2), and (1:3). In addition, polyethylene glycol (PEG) is also used to prevent the agglomeration of Fe3O4. Sample characterization was carried out using X-Ray Diffraction (XRD), Transmission Electron Microscope (TEM), Fourier Transform Infrared (FTIR), Particle Size Analyzer (PSA), and vibrating Sample Magnetometer (VSM). The XRD patterns show that the sample is composed of Fe3O4phase and ZnO phase with crystal structure cubic and wurtzite respectively. The TEM image shows the formation of a core-shell structure where PEG: ZnO is the shell and Fe3O4 is the core. From the FTIR results, there are C-O and C-C bonds which indicate the formation of PEG, Fe-O bonds indicate the formation of Fe3O4 and Zn-O bonds indicate the formation of ZnO. Characterization with PSA obtained particle sizes of 33 nm, 23 nm, and 16 nm with particle size distributions of 25%, 50%, and 75% so that the average particle size is 24 nm. The VSM results show that Fe3O4@PEG: ZnO (1:2) nanocomposite has a high magnetic saturation of 66.58 emu/g, with superparamagnetic properties, which has the potential to be developed as a bioimaging material.
Co-Authors Abdurrahim, Muhammad Rhohid Adrial, Rico Afdal Afdal Afdal Afdal, Afdal Afdhal Muttaqin Afrianto, Muhammad Ficky Ahmad Fauzi Pohan Alief, Iqbal Alimin Mahyudin Arif Budiman Astuti Astuti Astuti Astuti Daniel Kurnia Dedi Mardiansyah Dian Fitriyani Dian Milvita Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Elistia Liza Namigo, Elistia Elvaswer Elvaswer F, Maduri Faizar Farid Feriska Handayani Irka, Feriska Handayani Giyalovta, Algozan Degesha Harmadi Harmadi Harsojo Harsojo Haya, Nabila Fadia ihda khaira Imam Taufiq Imam Taufiq Inge M. Sutjahja Iqbal Alief Iqbal Ramadhan Iqbal Ramadhan Khaira, Ihda Kurnia, Daniel Machmudah, Machmudah Maduri F Marzuki Marzuki Marzuki Marzuki Meqorry Yusfi Muhammad Arif Muhammad Arif Muhammad Kahfi Muhammad Kahfi Muldarisnur, Mulda Mutya Vonnisa Nabila Fadia Haya Naela Amalia Zulfa Naela Amalia Zulfa Negara, Vamellia Sari Indah Nini Firmawati Nurhidayah Nurhidayah Nurul Hasanah Rahmat Rasyid Rahmat Rasyid Ramacos Fardela Rindi Genesa Hatika Santika, Rahma Sri Handani Sri Oktamuliani Suratun Nafisah Suwarni Suwarni Suwarni Suwarni Syukri Arief Trengginas Eka Putra Sutantyo Veithzal Rivai Zainal Veronica, Yessi Wildian Wildian Zulfi Zulfi