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All Journal Berkala Ilmiah Pendidikan Fisika Jurnal Riset Fisika Edukasi dan Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) ORBITA: Jurnal Pendidikan dan Ilmu Fisika JURNAL PENDIDIKAN TAMBUSAI Amerta Nutrition Poltekita : Jurnal Ilmu Kesehatan Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika Jurnal Salingka Abdimas Journal of Climate Change Society Physics Learning and Education Journal of Civil Engineering and Vocational Education Journal of Experimental and Applied Physics Abdi Humaniora: Jurnal Pengabdian Masyarakat Bidang Humaniora
Gusnedi Gusnedi
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Pengaruh Variasi Jumlah Doping Urea Terhadap Karakteristik Komposit ZnO/Graphene Oxide Sebagai Kandidat Katalis Solar Cell Yuliza Noerman, Kiki; Jonuarti, Riri; Gusnedi, Gusnedi; Ratnawulan, Ratnawulan; Ulfa Jhora, Fadhila
Jurnal Pendidikan Tambusai Vol. 8 No. 2 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ZnO dan Graphene Oxide merupakan material yang sangat menjanjikan dalam aplikasi solar cell. Kombinasi antara ZnO/Graphene Oxide memiliki kemampuan dalam mentranspor elektron dengan baik dibandingkan dengan ZnO atau Graphene Oxide saja. Namun, solar cell berbasis ZnO mudah terjadi rekombinasi pembawa muatan secara cepat karena energi band gap yang besar. Oleh karena itu, pembuatan komposit ZnO/Graphene Oxide yang diberi pengotor (doped) berupa urea dilakukan. Tujuan penelitian ini adalah untuk mengetahui pengaruh variasi jumlah doping urea pada komposit ZnO/Graphene Oxide terhadap karakteristik berupa struktur dan ukuran pada kristal dan partikel serta energi band gap yang nantinya akan dijadikan sebagai katalis solar cell. Tiga variasi jumlah doping yang diselidiki dalam penelitian ini: 0,11 gr, 0,22 gr, dan 0,33 gr dengan metode yang digunakan adalah metode sol-gel. Dari hasil analisis dapat dilihat bahwa dengan bertambahnya jumlah doping urea menunjukkan peningkatan pada ukuran partikel dari 107,86 nm menjadi 121,18 nm sedangkan pada ukuran kristal mengalami penurunan dari 46,39 nm menjadi 43 nm. Variasi jumlah doping urea juga mempengaruhi nilai energi band gap komposit ZnO/Graphene Oxide dengan nilai yang semakin menurun seiring bertambahnya jumlah doping yaitu dari 2,63 eV menjadi 2,57 eV, mengindikasikan peningkatan konduktivitas elektronik. Hasil ini menunjukkan bahwa komposit ZnO/Graphene Oxide dengan doping urea berpotensi sebagai katalis dalam aplikasi solar cell.
Antioxidant Activity and Amino Acid Profile of "Dadih" from Various Regions in West Sumatra, Indonesia Habibi, Nur Ahmad; Gusnedi, Gusnedi; Sartika, Wiwi; Ismanilda, Ismanilda
Poltekita : Jurnal Ilmu Kesehatan Vol. 17 No. 3 (2023): November
Publisher : Poltekkes Kemenkes Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33860/jik.v17i3.3381

Abstract

Dadih or curd is a traditional product typical of West Sumatra which is made through natural fermentation using the lactobacillus plantarum bacteria in bamboo. Each region in West Sumatra makes curd in various ways that affect its quality. This study aims to determine the amino acid profile and antioxidant activity of curd from various regions in West Sumatra. The study was conducted by testing curd from 4 main curd center regions, namely Bukittinggi, Payakumbuh, Batusangkar and Alahan Panjang. Certain tests were applied to assess the protein content using the Kjedahl method, amino acids content using the HPLC method and antioxidant activity using the DPPH method. The test results showed that curd from Payakumbuh had a higher protein and amino acid content compared to other regions. Furthermore, such curd had the highest level of antioxidant activity towards free radicals compared to other regions, with an IC50 value of 95.11 ± 0.40 mg/kg, which was included in the strong category. There was a significant relationship between amino acid content and antioxidant activity of curd. It can be concluded that curd from Payakumbuh had the best amino acid content and antioxidant activity compared to other regions in West Sumatra.
Pemberdayaan Guru Seni Budaya SMA Negeri 1 Harau Meningkatan Kualitas Pagelaran Seni dengan Rekayasa Ruang/Peralatan Audio Berstandar Akustik Maestro, Esy; Sudarman, Yos; Gusnedi, Gusnedi
ABDI HUMANIORA: Jurnal Pengabdian Masyarakat Bidang Humaniora Vol 5, No 2 (2024)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/abdihumaniora.v5i2.126349

Abstract

Art performances in schools can be carried out as an intracurricular part of cultural arts learning. On the other hand, art performances are also a forum for student creativity in various multi-event extracurricular activities with various targets. Of the many art performances that have been performed by students of SMA Negeri 1 Harau, both in music, dance, theater, and so on, the results of the performances achieved also vary in quality. However, the discussion of the quality of the performance results is more concentrated on the material issues of music, dance, theater, and so on. Even though the problem of the absence of performance room arrangement and audio equipment systems that meet the acoustic standards of art performances, is also a determining factor for the quality or not of art performances in schools. The results of monitoring since the survey, it is suspected that teachers do not have knowledge and technical skills about this problem, so the burden of the risk of art performances that are of low audio and acoustic quality, and have damaged the performance material itself, ultimately falls on students and audio/soundsystem equipment providers. The implication is that the quality of art performances in schools is not comparable to the waste of school budgets that have been provided for the procurement of an art performance.
Pengaruh Pemberian Sinbiotik, Probiotik, dan Prebiotik terhadap Depresi, Stres, dan Mood pada Orang Dewasa: Systematic Review dan Meta-Analisis: Effects of Synbiotic, Probiotic, and Prebiotic Supplementation on Depression, Stress, and Mood in Adults: A Systematic Review and Meta-Analysis Habibi, Nur Ahmad; Gusnedi, Gusnedi; Nindrea, Ricvan Dana; Hasniyati, Rina; Afriza, Renita; Rusydi, Riska; Yuska, Defniwita; Darningsih, Sri; Zulkifli, Zulkifli; Ismanilda, Ismanilda; Handayani, Marni; Utami, Citra Tristi; Umar, Hermita Bus; Dwiyanti, Defriani; Yuniritha, Eva
Amerta Nutrition Vol. 9 No. 1SP (2025): AMERTA NUTRITION SUPPLEMENTARY EDITION Special 5th Amerta Nutrition Conferenc
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/amnt.v9i1SP.2025.420-430

Abstract

Background: Psychobiotics, including probiotics, prebiotics, and synbiotics, have been proposed to improve mental health through modulation of the gut–brain axis. However, findings from randomized controlled trials (RCTs) remain inconsistent, Objectives: To systematically review and synthesize evidence on the effects of probiotics, prebiotics, and synbiotics on depression, stress, and mood in adult populations. Methods: A comprehensive search was conducted in PubMed, yielding 531 articles, of which 14 RCTs met the inclusion criteria. Risk of bias was assessed using the Cochrane Risk of Bias Tool. Meta-analyses were performed using both fixed- and random-effects models in RevMan. The study protocol was registered in PROSPERO (CRD420251103338). Discussions: Ten RCTs (n = 881) assessing depression did not show consistent benefits (SMD = –0.72; 95% CI: –1.42 to –0.01; p-value = 0.05; I² = 96%). Six RCTs (n = 444) evaluating stress also showed non-significant effects (MD = –1.35; 95% CI: –3.70 to 1.01; p-value = 0.26; I² = 73%). Conversely, six RCTs (n = 376) demonstrated significant improvements in mood (MD = 0.73; 95% CI: 0.25 to 1.20; p-value = 0.003; I² = 75%). Meta-regression indicated that larger sample sizes were associated with more consistent improvements in mood (p-value = 0.04). Sensitivity analyses confirmed the stability of the findings, and no evidence of publication bias was detected. Conclusions: Probiotic, prebiotic, and synbiotic supplementation may provide beneficial effects on mood and could serve as a potential nutritional intervention to enhance psychological health. However, effects on depression and stress inconsistent.
Pengembangan Lks Berbasis Project Based Learning Untuk Meningkatkan Keterampilan Berpikir Kreatif Pada Materi Fluida Dinamis Kelas XI SMA/MA Sisri Elita, Reni; Satria Dewi, Wahyuni; Gusnedi, Gusnedi
Jurnal Pendidikan Tambusai Vol. 10 No. 1 (2026)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v10i1.36566

Abstract

Penelitian ini bertujuan untuk mengembangkan Lembar Kerja Siswa (LKS) berbasis Project Based Learning (PjBL) yang terintegrasi dengan keterampilan berpikir kreatif pada materi Fluida Dinamis kelas XI SMA/MA serta menilai tingkat validitas LKS yang dikembangkan. Penelitian ini menggunakan metode Research and Development (R&D) dengan model pengembangan ADDIE yang meliputi tahap analisis, perancangan, pengembangan, implementasi, dan evaluasi. Subjek penelitian terdiri atas tiga validator ahli yang melakukan uji validitas produk. Instrumen penelitian berupa lembar validasi yang mencakup aspek kelayakan isi, kelayakan model PjBL, kelayakan keterampilan berpikir kreatif, kebahasaan, penyajian, dan kegrafisan. Data dianalisis secara deskriptif kuantitatif menggunakan skala Likert. Hasil penelitian menunjukkan bahwa LKS berbasis PjBL yang dikembangkan memiliki nilai rata-rata validitas sebesar 84,73% dengan kategori sangat valid. Dengan demikian, LKS berbasis Project Based Learning pada materi Fluida Dinamis layak digunakan sebagai bahan ajar untuk mendukung peningkatan keterampilan berpikir kreatif siswa kelas XI SMA/MA.
Co-Authors - Asrizal - Asrizal - Asrizal - Murtiani Abdul Azis Aditya Fahlevi Akmam Akmam Angraini, Sri Annisa Wudda, Ami Aris Alfikri Arni Sopianti Asrizal Asyshifa Astri, Neno bachtar, fitrina Defniwita Yuska Defriani Dwiyanti, Defriani Dela Prawita Mulza Desnita Dini Aulia Putri Elven Hardyus Samadaya Nehe Esy Maestro Eva Yuniritha, Eva Fadhila Ulfa Jhora Fadli Andrias Fatni Mufit Fauziyah, Faadhilah Febri Zola, Nadira Fio Adella Illahi Fitri Nisak Fitriane Salsabila Z Fozza Andresta Putri Handayani, Marni Hastil Hanifah Hendini, Elvira Hermita Bus Umar Hersha Hanifa Hidayati Hidayati Hidayati Hidayati Hufri Hufri Innes Andriani Ismanilda, Ismanilda Jhora, Fadhila Junita, Novia Korry Nilyani Lisma Evareny Mella Roza Mely Afriani Milla Fitri, Aidina Monicha Esti Moulia Fadhilah Murtiani Murtiani Nessa Aqila Nindrea, Ricvan Dana Nof Putria Tenti Nur Ahmad Habibi Nur Anisa Ornella Frita Paramita, Eca Phobi Juwandari Putri Putra, Amali Putri Dwi Sundari Putri, Sri Fany Mulya Rahmadini, Fadhilla Rahmat Hidayat Rahmi Zulva, Rahmi Ramli Ramli Ratnawulan . Reni Defrianti Reni Saputri Renita Afriza Renol Afrizon Rina Desriyenti Rina Hasniyati Riri Jonuarti Rusydi, Riska Salwa Salsabilla Satria Dewi, Wahyuni Selvia indri ana Sepna Gitnita Silvi Trisna Silvi Yulia Sari Silvia Agustin Sisri Elita, Reni Siti Khadijah Sri Darningsih Tiara Alwafa Nissa Huang Utami, Citra Tristi Wahyuni Satria Dewi Wiwi Sartika Yasni Novi Hendri Yenni Darvina Yohandri Yos Sudarman Yulia Sari, Silvi Yuliza Noerman, Kiki Yundari, Yundari Yuni Fitria Yurnetti Yurnetti Zahra, Hayatun Nufus Zaitul Hidayat Zulhendri Kamus Zulkifli Zulkifli