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All Journal Journal of English and Arabic Language Teaching Sinergi JPSE (Journal of Physical Science and Engineering) Jurnal Penelitian Sains JURNAL MANAJEMEN DAN PELAYANAN FARMASI (Journal of Management and Pharmacy Practice) Bernas JURNAL INSTEK (Informatika Sains dan Teknologi) Indonesian Journal of Energy Building of Informatics, Technology and Science International Journal of Applied Sciences and Smart Technologies Jurnal Sains dan Edukasi Sains LOSARI: Jurnal Pengabdian Kepada Masyarakat Andalasian International Journal of Applied Science, Engineering, and Technology Journal of Renewable Energy, Electrical, and Computer Engineering PAsira (Journal of Public Administration Musi Raya) Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Journal of Bussines Management Basic Jurnal Solusi Masyarakat Dikara Indonesian Journal of Studies on Humanities, Social Sciences and Education E-Amal: Jurnal Pengabdian Kepada Masyarakat IRDH International Journal of Technology, Agriculture and Natural Sciences (IRDH IJTANS)
Robi Kurniawan
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Sintesis Hydroxyapatite Nanoparticle dari Limbah Cangkang Bekicot dan Aktivitas Antibakterinya sebagai Kandidat Material Biomedis Nikmah, Ainun; Kurniawan, Robi
Jurnal Sains dan Edukasi Sains Vol. 7 No. 1 (2024): Jurnal Sains dan Edukasi Sains
Publisher : Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/juses.v7i1p23-28

Abstract

Penelitian ini bertujuan untuk mensintesis n-HAp (Hydroxyapatite nanoparticle) secara alami dari limbah cangkang bekicot dan mengevaluasi aktivitas antibakterinya sebagai kandidat material biomedis. Limbah cangkang bekicot telah diidentifikasi sebagai sumber potensial untuk memperoleh n-HAp, yaitu salah satu material bioaktif yang memiliki aplikasi luas dalam bidang biomedis. Proses sintesis n-HAp dilakukan menggunakan metode sol-gel dan dikarakterisasi dengan menggunakan teknik analisis FTIR, XRD, dan SEM. Hasil karakterisasi XRD menunjukkan bahwa n-HAp yang dihasilkan memiliki kesesuaian yang baik terhadap data model. Lebih lanjut, pembentukan n-HAp dari cangkang bekicot juga dikonfirmasi dengan FTIR. Keberhasilan sintesis ini ditandai dengan adanya vibrasi pita P-O dari tetrahedral PO4 disekitar bilangan gelombang 1062 cm-1. Gugus karbonat CO32− pada spektra IR juga diidentifikasi dengan kuat pada bilangan 1460 cm−1. Selain itu, berdasarkan analisis SEM, ukuran partikel n-HAp berada dikisaran 43,2 nm. Untuk menunjang potensi aplikasinya sebagai material biomedis, uji aktivitas antibakteri juga dilakukan pada bakteri Staphylococcus aureus melalui metode sumuran agar. Hasil pengujian menunjukkan bahwa n-HAp memiliki zona hambat sebesar 5 mm dan menunjukkan potensi aktivitas antibakteri yang cukup baik. Hal ini dikaitkan dengan keberadaan mineral Ca2+ (kalsium) dan Na+ (natrium) yang terkandung pada n- Hap. Kehadiran ion kalsium dan natrium ini dapat mengganggu keseimbangan ion dalam sel dan mengganggu berbagai proses biologis dalam sel bakteri,sehingga, aktivitas metabolisme dan reproduksi bakteri dapat terganggu dan mengakibatkan penghambatan pertumbuhan bakteri.
PENINGKATAN KOMPETENSI GURU MELALUI INOVASI PEMBELAJARAN KURIKULUM MERDEKA DI ERA DIGITAL: PELATIHAN GOOGLE SITES DAN TEKNOLOGI AI DI SMA NEGERI 1 TUREN Kurniawan, Bakhrul Rizky; Ramadani, Cahyani Intan; Latifah, Eny; Kurniawan, Robi; Kholifah, Mimin Nurul; Cahyo, Daeng Nur
E-Amal: Jurnal Pengabdian Kepada Masyarakat Vol 4 No 3: September-Desember 2024
Publisher : LP2M STP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47492/eamal.v4i3.3564

Abstract

Kegiatan pengabdian kepada Masyarakat oleh tim pengabdian Departemen Fisika Universitas Negeri Malang bertujuan untuk mendukung implementasi Kurikulum Merdeka di SMA Negeri 1 Turen melalui pelatihan pembuatan website pembelajaran berbasis Google Sites serta pemanfaatan teknologi kecerdasan buatan (AI). Pelatihan ini berfokus pada peningkatan kompetensi guru dalam menciptakan pembelajaran yang lebih interaktif dan adaptif menggunakan teknologi digital. Hasil menunjukkan bahwa 85% peserta mampu membuat dan mengelola website pembelajaran, serta 90% berhasil mengintegrasikan AI dalam pembuatan materi pembelajaran interaktif. Teknologi yang diperkenalkan memungkinkan guru menciptakan pembelajaran yang lebih fleksibel, interaktif, dan responsif terhadap kebutuhan siswa. Secara keseluruhan, kegiatan ini memberikan dampak positif terhadap peningkatan kompetensi guru dalam memanfaatkan teknologi digital untuk mendukung Kurikulum Merdeka dan menciptakan ekosistem pendidikan yang lebih modern dan inovatif
Characterization The Flavonoids Extract of Tridax Procumbens l. Leaves and Betel Lime as Materials for Open Wound Analgesic Ointment Zainullah, Muhammad; Setiana, Mina Devika; Fatimah, Vera Nur; Fitriana, Ilma; Kurniawan, Robi
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 2, December 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i2.7915

Abstract

Tridax procumbens L. has quite high flavonoid content (6.51%). Flavonoids have antimicrobial effects that can fight bacteria. Besides that, the flavonoid content of T. procumbens leaves as an analgesic inhibits has the potential to be used as an analgesic ointment material for open wounds. Betel lime (CaCO3) also helps speed up the healing of open wounds. This research aims to optimize a mixture of T. procumbens leaves and betel lime to make a material-based herbal ointment that effective in healing open wounds. This research uses quantitative and qualitative approaches. The dependent variables used are the results of FTIR characterization, SEM-EDX, and antibacterial tests. Research results show that the 1:1 ointment sample has the highest homogeneity with an average particle size distribution of 11.95 nm. The weight and total atomic weight of carbon and calcium elements fluctuated with increasing leaf extract concentration, but the 2:1 ointment sample showed a higher calcium element content than the other samples because the amount of whiting was greater than the leaf extract. Flavonoid functional groups were successfully detected, O-H, C-H, and C-O-C. In S. aureus, it was shown that the 1:1 ointment sample was able to inhibit bacterial growth with an inhibition zone diameter of 0.062 to 1.510 cm. In addition, the contents of stigmasterol, β-sitosterol, and n-hexadecanoid acid are the main components that play a role in the inhibitory activity of bacteria. Keywords: Analgesic ointment, flavonoids, open wounds
Audits for the Use and Strategic Of Energy Efficiency on the Campus Bukit Indah of Malikussaleh University Hasibuan, Arnawan; Siregar, Widyana Verawaty; Ezwarsyah, Ezwarsyah; Kurniawan, Robi
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 1 No. 02 (2021): November 2021
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v1i02.16

Abstract

This study aims to determine the right strategy for energy efficiency that can be applied in the campus area. This study uses quantitative methods in a dominant position, while qualitative methods are less dominant. The method of analysis for this study uses Contextual Interaction Theory (CIT) with the characteristics of the implementer and the target group consisting of motives, cognition, and strengths. These variables will be the main points for formulating a basic strategy on energy use at the Faculty of Engineering, Bukit Indah campus, Malikussaleh University. Contextual issues are also external factors that influence and become a consideration in determining the level of energy efficiency efforts on campus. Regarding to CIT measurements which have been analyzed, the score of motives from implementer is -0.33, cognitions +0.50, and power +62. Then, overall for target group get positive score which consist of motives +0.75, cognitions +0.54, and power +0.44. The result of type interaction between two actors point out number 10 which is about obstructive. Apart from that, three contextual issues will also be analyzed that affect the characteristics of actors, namely the specific context, the structural context and the broader context. Strategic planning to pursue energy efficiency at the Faculty of Engineering, Bukit Indah Campus, Malikussaleh University consists of increasing motivation with energy-saving campaigns and awarding prizes. Then, improve cognition with energy audits and socialization of energy efficiency. Finally, increasing strength through the implementation of sustainable policies and programs.
STUDENTS’ PERCEPTION IN USING DUOLINGO APPLICATION IN SPEAKING ACTIVITIES IN STATE JUNIOR HIGH SCHOOL 4 LANGGAM Kurniawan, Robi; Buriyanti, Elgi
Indonesian Journal of Studies on Humanities, Social Sciences and Education Vol. 1 No. 2 (2024): Indonesian Journal of Studies on Humanities, Social Sciences, and Education (IJ
Publisher : GoAcademica CRP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/79qtje88

Abstract

This study explores the perceptions of students using the Duolingo application for speaking activities at State Junior High School 4 Langgam. The subject of this research is all eight students State Junior High School 4 Langgam. The data were collected through questionnaires. The questionnaire answers were analyzed descriptively using SPSS 21 and Microsoft Excel. Participants were instructed to select one Likert scale answer in each area based on the statement. By employing a quantitative descriptive method, the research aims to determine the effectiveness of Duolingo in enhancing speaking skills, based on students’ experiences and feedback. The results indicate a mixed perception among students, highlighting both the advantages and challenges of integrating Duolingo into the language learning curriculum.
A Systematic Literature Review: Development of Physics Learning Research with Project-Based Learning Model in Indonesia Suwasono, Purbo; Salmah*, Ummi; Mercado, Justine C; Kurniawan, Robi
Jurnal Pendidikan Sains Indonesia Vol 12, No 4 (2024): OCTOBER 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v12i4.39324

Abstract

Project based learning (PjBL) plays a crucial role in helping students develop 21st-century skills. This study aims to assess the development of PjBL implementation in physics education in Indonesia through a systematic literature review. By analyzing articles published between 2017 and 2023, this research employs identification, screening, and in-depth analysis techniques to evaluate the content. Inclusion and quality assessments of the articles are conducted meticulously to ensure accuracy and avoid bias. A total of 24 relevant articles were identified, with most studies being experimental and involving high school students with sample sizes ranging from 22 to 48 students. The most common research instrument was tests, focusing on fluid topics, and the frequently measured variable was students' creative thinking skills. PjBL is often integrated with the STEM approach. Recommendations from this review include the development of PjBL on a wider range of physics topics and more comprehensive measurement of students' skills. Teachers are also advised to manage time allocation effectively when implementing PjBL. The limitation of this study is its exclusive focus on PjBL in Indonesia. Further research is recommended to explore the application of PjBL in enhancing critical thinking, problem-solving, and student literacy in less commonly tested physics topics such as Newton's Laws, Temperature and Heat, Electromagnetism, Light, and Waves
Pengembangan Sarana Permainan Edukatif yang Ramah Anak sebagai Upaya Meningkatkan Minat Wisata di Dilem Wilis -, Kurnia Galuh Candra Kirana; Yulmaisi Dwi Asmarita; Nandang Mufti; Markus Diantoro; Robi Kurniawan
LOSARI: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2024): Desember 2024
Publisher : LOSARI DIGITAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53860/losari.v6i2.388

Abstract

Agrowisata Dilem Wilis di Kabupaten Trenggalek, Jawa Timur, adalah destinasi wisata yang menawarkan keindahan alam dan keanekaragaman hayati. Meskipun kaya akan potensi wisata, kawasan ini masih minim fasilitas untuk anak usia dini. Oleh karena itu, tim NM Research Group dari Universitas Negeri Malang mengusulkan pembangunan playground dan track off-road mobil radio controlled dengan layout edukatif. Kegiatan ini bertujuan meningkatkan daya tarik Dilem Wilis bagi keluarga dengan anak kecil, sekaligus memberikan pengalaman belajar yang menyenangkan. Metode pelaksanaan meliputi observasi, desain, pembangunan, dan serah terima fasilitas. Fasilitas baru ini diharapkan tidak hanya menambah minat kunjungan, tetapi juga menyediakan sarana bermain yang aman dan edukatif bagi anak-anak. Dengan dukungan infrastruktur yang lebih baik, Dilem Wilis diharapkan dapat menjadi tujuan wisata unggulan yang menggabungkan unsur pendidikan, rekreasi, dan keindahan alam.
APPLYING DICTOGLOSS TECHNIQUE TO IMPROVE STUDENTS’ LISTENING ABILITY OF SHORT STORY: AN EXPERIMENTAL STUDY AT A JUNIOR HIGH SCHOOL IN PEKANBARU Kurniawan, Robi; Meutia
Indonesian Journal of Studies on Humanities, Social Sciences and Education Vol. 2 No. 1 (2025): Indonesian Journal of Studies on Humanities, Social Sciences, and Education (IJ
Publisher : GoAcademica CRP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/hp5nva64

Abstract

This study aims to identify the significant effect on the use of Dictogloss Technique on listening ability to short story in the second grade of Junior High School 20 Pekanbaru. In this quantitative research, the design used pre-experiment with only one class pre-test and post-test. The population of this research was second grade students at Junior High School 20 Pekanbaru. The researcher used simple random sampling technique in which class VIII.8 of Junior High School became the research sample which amounted to 34 students. Researcher used objective tests as a data collection technique. Then the researcher tested the data with T-test and obtained data 1.692, then T-Table -1.507 and Sig. (2 tailed) is 0.000 less than 0.05. Then H0 is rejected and Ha is accepted. In conclusion, there is a significant effect on the use of Dictogloss Technique on listening ability to short story of students in the second grade of Junior High School 20 Pekanbaru.
Implementation of PjBL-STEM Learning to Improve Students' Higher Order Thinking Skills in Direct Current Electricity Salmah, Ummi; Suwasono*, Purbo; Kurniawan, Robi; Swapno, S M Masfequier Rahman
Jurnal Pendidikan Sains Indonesia Vol 13, No 2 (2025): APRIL 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v13i2.44826

Abstract

Improving the quality of education is crucial in ensuring that students are equipped to adapt to rapid advancements in science and technology. This study aims to examine the effect of implementing a STEM-integrated project-based learning (PjBL) model on students higher-order thinking skills (HOTS). The research used a quantitative approach with a quasi-experimental method, employing a pretest-posttest non-equivalent control group design. The participants were 71 students from a school in Riau province, divided into an experimental class (35 students) and a control class (36 students). The results indicate that students in the experimental class achieved a good category of HOTS with an average posttest score of 61.90. A significant improvement was observed in the posttest scores across three HOTS indicators: analyzing, evaluating, and creating. The obtained N-gain score of 0.48 indicates a moderate level of improvement. Specifically, the average score for the analyzing (C4) domain increased to 68.73 (good), the evaluating (C5) domain reached 55.24 (fair), and the creating (C6) domain rose to 48.10 (fair). The results of the Mann-Whitney U test indicated a significant difference between the experimental and control groups (Asymp Sig 2-tailed = 0.000). Further analysis showed a moderate N-Gain score of 0.488 and a strong effect size (d = 0.76), confirming that the implementation of the PjBL-STEM model effectively enhanced students' HOTS in the topic of direct current electricity
ANALISIS SENTIMEN MASYARAKAT TERHADAP VIRUS CORONA BERDASARKAN OPINI DARI TWITTER BERBASIS WEB SCRAPER KURNIAWAN, ROBI; APRILIANI, AULIA
Jurnal INSTEK (Informatika Sains dan Teknologi) Vol 5 No 1 (2020): APRIL
Publisher : Department of Informatics Engineering, Faculty of Science and Technology, Universitas Islam Negeri Alauddin, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (611.309 KB) | DOI: 10.24252/instek.v5i1.13686

Abstract

Indonesia menjadi salah satu Negara yang pengguna aktif harian twitternya cukup tinggi, berdasarkan hal tersebut twitter dapat dijadikan sebagai media untuk melakukan analisis sentimen terhadap topik corona. Analisis sentimen merupakan salah satu cabang dari text mining yang melakukan proses klasifikasi pada dokumen atau teks. Penelitian ini bertujuan untuk mengetahui bagaimana dampak virus corona di Indonesia sesuai opini masyarakat melalui twitter. Pengumpulan data dilakukan dengan teknik web scraper yang menghasilkan 1000 record sejak tanggal 20 Januari sampai 1 Februari 2020, data yang telah di scraping kemudian dianalisis mengikuti tahapan text mining yaitu case folding, tokenizing dan filtering. Hasil dari penelitian ini menunjukan persentase opini masyarakat terhadap virus corona yaitu 79% negatif, 11% Netral dan 10% Positif. Kata kunci : corona, analisis sentimen, twitter;
Co-Authors -, Kurnia Galuh Candra Kirana Adi Setiawan Adulsman Sukkaew Agung Feinnudin Ahmad Taufiq Ainun Nikmah Anton Mardoni APRILIANI, AULIA Arnawan Hasibuan Baidhawi, B Bhunte, Shrikant Vasantrao Buriyanti, Elgi Cahyani Intan Ramadani Cahyo, Daeng Nur Cindya Sari, Elok Putri Crisca, Rini Damayanti, Wulan Ariani Desky, Muhammad Aulia Eny Latifah, Eny Ezwarsyah Ezwarsyah Fatimah, Vera Nur Firmansyah, Gugum Aji Fisip PAsira Fitriana, Ilma Gard, Muskan Halimahtus Sahdiah Hendrival, H Herman Fithra I Made Ari Nrartha Ibrahim Nur Afrizal Dahlan M. Intan Salsabila Mauludina Sari Isa, Muzamir Isnaini Yulianingtyas Joko Suwardy Joko Utomo Joyuhan Putra Setyawan Kholifah, Mimin Nurul Kultsum, Ummu Kurniawan, Bakhrul Rizky Kurniawan, Irwan Wahyu Kurniawan, Reza Wahyu M. Ari Prayogo Mardi Murahman Markus Diantoro Mercado, Justine C Meutia Mila Azizah Mimin Nurul Kholifah Muhammad Daud Muhammad Dian Ilham Akbar Mursalin . Nandang Mufti Nasution, Ardiansyah Nining Kurniasih, Nining Nur Elma Ayu Wahyuni Nurdin Nurdin Nurul Khoiriyah Purbo Suwasono Ramadani, Cahyani Intan Ramadhani, Dea Berliana Resti Marlina Reyza Arief Taqwa, Muhammad Rita Mawarni CH Safina, Putri Anjali Sah, Andrian Salmah*, Ummi Salmah, Ummi Setiana, Mina Devika Sholikhah, Mar’atus Siregar, Widyana Verawaty Suci Hanifah Supranata, Yogi Suwasono*, Purbo Swapno, S M Masfequier Rahman Syafrizal Hasibuan Tanniewa, Adam M Yulmaisi Dwi Asmarita Yundari, Yundari Zainullah, Muhammad