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All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Ilmu Lingkungan Jurnal Ilmu Lingkungan Jurnal Visi Ilmu Pendidikan Alchemy : Journal of Chemistry Agrointek Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Bioeksperimen: Jurnal Penelitian Biologi KOVALEN: Jurnal Riset Kimia Jurnal Preventia Jurnal Penelitian Sains Jurnal Ilmiah Peuradeun Sarwahita : Jurnal Pengabdian Kepada Masyarakat Fullerene Journal of Chemistry JURNAL PENDIDIKAN MIPA Jurnal Karinov Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Graha Pengabdian Eduproxima : Jurnal Ilmiah Pendidikan IPA Jurnal Pengabdian kepada Masyarakat Nusantara ELEMENTARY : Jurnal Inovasi Pendidikan Dasar Jurnal Pembelajaran, Bimbingan, dan Pengelolaan Pendidikan Jurnal Pengabdian Pada Masyarakat METHABDI Jurnal MIPA dan Pembelajarannya Journal of Innovation and Teacher Professionalism Teaching, Learning, and Development Jurnal Akademika Kimia Sasambo: Jurnal Abdimas (Journal of Community Service) Prosiding Seminar Nasional Pengabdian Masyarakat Preventia : The Indonesian Journal of Public Health JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan
Yudhi Utomo
Univeristas Negeri Malang
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Intensifikasi Ladang Melalui Optimasi Cadangan Air Kelompok Tani Sri Gading Desa Gadingkulon Yudhi Utomo; Indah Nur Pramesti; Lintang Miftahul Rizki; Suryani Indah Permatasari
Prosiding Seminar Nasional Pengabdian Masyarakat Vol. 3 (2025): Prosiding Seminar Nasional Pengabdian Masyarakat
Publisher : CV. Dharma Samakta Edukhatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61142/psnpm.v3.272

Abstract

Lahan pertanian di Desa Gadingkulon, Kecamatan Dau, Kabupaten Malang terdiri atas lahan basah atau persawahan dan lahan tadah hujan atau ladang. Lahan persawahan relatif aman terhadap suplai air, namun lahan ladang kesulitan memperoleh air saat musim kemarau sehingga aktivitas pertanian terbatas. Pada kegiatan pengabdian ini, sasaran penerima manfaat adalah petani jeruk yang menggunakan ladang. Tujuannya untuk meningkatkan sistem cadangan air di ladang petani jeruk, meningkatkan efisiensi pengisian tandon air, serta pendampingan kelola air yang adil. Kegiatan terealisasi melalui tiga aktivitas utama, yaitu perakitan alat sedot yang kuat untuk mengalirkan air pada elevasi 70% sepanjang 200 m, pipanisasi dari embung ke tandon transit dan ke lahan pertanian, serta distribusi air ke kelompok tani menggunakan sistem bioflok. Kegiatan ini membuktikan bahwa pendekatan tersebut menjadi solusi nyata bagi petani jeruk dalam mengatasi irigasi saat musim kemarau, serta menunjukkan bahwa edukasi teknis, pembangunan sarana sederhana, dan pendampingan lapangan mampu mendorong perubahan paradigma petani dari pasif menjadi aktif dan mempercepat adopsi teknologi. Program ini diharapkan berkelanjutan dengan dampak jangka panjang berupa peningkatan produktivitas jeruk dan ketahanan pertanian lokal.
Developing Folktale-Based Student Worksheets to Improve Junior High School Students’ Collaboration Skills Nafi’ah, Zahrotun; Utomo, Yudhi; Fatmawati, Denny
Teaching, Learning, and Development Vol. 4 No. 2 (2026)
Publisher : Education and Development Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62672/telad.v4i2.111

Abstract

Collaboration skills are an important part of 21st century learning that needs to be developed in teaching and learning activities. However, the results of observations and interviews with teachers at one of junior high school student in Malang, Indonesia showed that science learning has not fully facilitated optimal student collaboration. One alternative solution that can be done is through the development of student worksheets based on local folklore that is contextual and encourages group cooperation. This study aims to develop student worksheets based on the folklore "Sumber Wendit", which is feasible and practical to use in science learning on food chain materials. The study used the Research and Development (R and D) method of the Borg and Gall model, which was modified and implemented until the product revision stage. The validation test was carried out by one expert validator, while the readability and practicality tests each involved 25 students and one science teacher. The results showed that the student worksheets were in the very feasible category in terms of content, language, presentation, and appearance. This student worksheets were also considered easy to understand by students and helped them work together in understanding the concept of the ecosystem meaningfully. Thus, this student worksheets is declared valid, practical, and has the potential to support strengthening collaboration in science learning.
Analisis Risiko Bahaya pada Pekerja di Tempat Penampungan Sampah Terpadu Reduce Reuse Recycle (TPST 3R) Mulyoagung Bersatu Dau Kabupaten Malang Alma, Lucky Radita; Ulfah, Nurnaningsih Herya; Utomo, Yudhi; Afifah, Afifah; Adawiyah, Uciatul; Nur Kholifah, Wakhi Datul; Merillarosa, Iing
Preventia: The Indonesian Journal of Public Health Vol. 4, No. 2
Publisher : citeus

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Abstract

Integrated waste bin of Reduce Reuse Recycle (TPST 3R) Mulyoagung Bersatu Dau is one of the TPS in Malang Regency. Every day the TPST carry out various kinds of garbage from the community around Dau District before being transported to the final rubbish dump. The waste management activities carried out by the workers, have the potential for accidents and diseases caused by work, especially the implementation of health and safety has not been done according to standards. The purpose of this study was to determine the description of hazard risks to workers in TPST 3R Mulyoagung Bersatu District of Dau Malang Regency. This research was a descriptive observational study. Research respondents were 36 people. The results of this study, as many as 58% of workers stated that the danger that "often" occurs to workers is scratched and dropped. 58% of workers stated "often" had diarrhea and gastrointestinal disorders. Efforts to prevent and control hazards in the workplace are needed, for example with safe work practices, the use of Personal Protective Equipment (PPE) in accordance with standards and personal hygiene practices to prevent the transmission of congenital rubbish.
PENGEMBANGAN MEDIA GAME LIGHT WAVE DOMINATION DENGAN MODEL TEAMS GAMES TOURNAMENT (TGT) UNTUK MEMFASILITASI KETERLIBATAN SISWA PADA MATERI GELOMBANG CAHAYA KELAS VIII Ma'rifah, Winda Ashnaful; Utomo, Yudhi; Fatmawati, Denny
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 7, No 4 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v7i4.8023

Abstract

Penelitian ini bertujuan untuk mengembangkan media pembelajaran berbasis game yang diberi nama Light Wave Domination, dipadukan dengan model Teams Games Tournament (TGT), untuk memfasilitasi keterlibatan siswa pada materi gelombang cahaya kelas VIII. Metode yang digunakan adalah Research and Development (RD) dengan model ADDIE (Analysis, Design, Development, Implementation, and Evaluation). Hasil validasi ahli menunjukkan bahwa media berada pada kategori sangat layak, baik dari aspek isi, desain, maupun teknis. Uji coba terbatas menunjukkan bahwa media ini mampu meningkatkan partisipasi dan keterlibatan siswa dalam proses pembelajaran. Dengan demikian, Light Wave Domination layak digunakan sebagai alternatif media pembelajaran interaktif dalam mata pelajaran IPA di jenjang SMP.
Composting as an Alternative to Waste Management at State University of Malang Eli H. Sanjaya; Abdul K. Syahroni; Much S. Alwy; Mohamad F. Setyawan; Yudhi Utomo; Agung Witjoro; Mohd F. M. D. Din
Jurnal Akademika Kimia Vol. 13 No. 2 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i2.pp51-56

Abstract

Waste is one factor that becomes an environmental problem. The waste that is often found is inorganic and organic. One of the uses of organic waste is the production of solid organic fertilizer in the form of compost. This research utilizes dried leaves (sono leaves, teak, trembesi, kenitu, breadfruit, and ketepeng) as raw materials for making compost. The compost-making method is carried out by adding an activator called EM4 (Effective Microorganism 4). This research produced pH values, Nitrogen, Phosphorus, Potassium, and Water Content per values under SNI 19-730-2004 regarding the specification of compost from organic waste. And the results of microbial diversity in the compost were obtained, which were dominated by microbes of the type Proteobacteria 40%, Firmicutes 30%, Actinobacteria 13%, Acidobacteria 6%, Bacteroidota 4%, Planctomycetota 3%.
Perbandingan Metode Maserasi dan Microwave-Assisted Extraction pada Daun Beluntas dengan Variasi Pelarut dan Uji Antioksidan: Comparison of Maceration and Microwave-Assisted Extraction on Beluntas Leaves with Variation of Solvent and Antioxidant Test Yudhi Utomo; Nur Chairini; Muhammad Roy Asrori
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16155

Abstract

Beluntas leaves (Pluchea indica L.) as Indonesian herbal plants contain secondary metabolites such as flavonoids. Beluntas leaf parts can be used as medicine. The content of secondary metabolites in Beluntas leaves acts as a natural antioxidant. Beluntas leaf extraction has not been optimal so far. Microwave assisted extraction can increase the yield. This research aims to study the effect of giving different types of solvents of extraction on Beluntas leaves on the levels of flavonoids and the resulting antioxidant activity, and determine the profile of Beluntas leaf extraction results based on comparative trials of the maceration method and MAE (microwave-assisted extraction). This research was conducted in 4 stages: (1) sample preparation of dried Beluntas leaves, (2) extraction by maceration with various types of solvents n-hexane, ethyl acetate, and 70% ethanol, (3) the characteristics of the flavonoid compounds, namely the qualitative test and the quantitative test with AlCl3, and (4) the measurement of antioxidant activity in Beluntas leaf extract using the DPPH method. The results of this study obtained a total flavonoid content of 4.23 mgQE/g which was the result of maceration of the ethyl acetate solvent extract (yield: 5.09%), and all Beluntas leaf extracts in ethyl acetate solvent were included in the category of very strong antioxidant activity with an IC50 value of 31.68 μg/mL.
Pengaruh Ekstrak Biji Ketapang (Terminalia catappa L.) Terhadap Daya Hambat Pertumbuhan Bakteri Eschericia coli: Effect of Ketapang (Terminalia catappa L.) Seed Extract Against the Inhibitory Power of Eschericia coli Bacteria Growth Zelen Surya Minata Minata; Annida Elfiana Citra Ardianty; Sumari; Yudhi Utomo
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16355

Abstract

Diarrheal is a disease that is widely endemic in tropical countries, especially in Indonesia. The bacterium that causes the appearance of diarrheal diseases is Eschericia coli. Plants that have the potential to be a cure for diarrhea are ketapang (Terminalia catappa L.). Ketapang seeds contain tannins, flavonoids, alkaloids, and saponins that can be used as antibacterial. This study aims to identify the effect of ketapang seed extract on the activity of E. coli bacteria. Extraction of ketapang seeds is carried out by the soxhlet extraction method with a solvent mixture of water and ethanol 96%. This research is a laboratory experiment. Bacterial growth inhibition test is carried out by the phytochemical test of ketapang seed extract with the addition of FeCl3 solution showed positive results containing tannin compound indicated by the formation of a blackish-green colored solution. Positive control was carried out with amoxicillin and negative control with 70% ethanol solution. The results of the ANOVA test analysis obtained a significance value of 0.963, interpreted that there was a difference in inhibition power in variations in the concentration of ketapang seed extract with the most effective extract concentration being 0.8%. The higher the concentration of ketapang seed extract, the greater the inhibition against the growth of E. coli bacteria, therefore it can be used as a basic ingredient for anti-diarrhea drugs.
Isolasi Lignin dari Sekam Padi (Oriza Sativa L) Serta Pemanfaatanya Sebagai Adsorben Ion Cd(II) Yudhi Utomo; Ernis Nor Fadila
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 4 No. 2 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v4i22020p019

Abstract

Rice husk is an agricultural waste and contains lignin (20-25%). NaOH, ethanol and acetic acid solvents are commonly used solvents in lignin isolation because they produce sulfur-free and high purity lignin. Lignin has potential as an adsorbent due to the presence of hydroxyl groups and aromatic rings that can bind to metal ions. The purpose of this study was to find out the best solvent in isolating lignin from rice husks, the characteristics of lignin, and the ability of lignin from rice husks as an adsorbent of Cd (II) metal. The quantitative laboratory research conducted was lignin characterization using FTIR and SEM and test the ability of the adorbent to absorb Cd (II) ions using the AAS instrument. Lignin isolated using NaOH solvent is more effective and efficient because it produces large amounts of lignin compared to ethanol and acetic acid. The isolated lignin has an absorption band in the area of 3500-3200 cm-1, namely the O-H stretch and 1600 cm-1, namely the vibrations of the aromatic and has spherical surface morphology in SEM instrumentation. Lignin was applied as a Cd (II) adsorbent and had the greatest adsorption capacity of A and B at a concentration of 2.0 ppm.
Keefektifan Pembelajaran Interkoneksi Multipel Representasi dalam Mengurangi Kesalahan Konsep Siswa pada Materi Stoikiometri Nilawati, Putri Arum; Subandi, Subandi; Utomo, Yudhi
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol. 1, No. 11
Publisher : citeus

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Abstract

Stoichiometry is one of the basic topics in Chemistry. The topic was abstract and related to other concepts so that many students find it difficult to learn, and experience misconceptions in this concept. Misconceptions in stoichiometry can be corrected by Interconnection Multiple Representation (IMR) learning. The purpose of this study was to determine the effectiveness of the IMR learning to correct misconceptions students in stoichiometric concept. The study design is a one-group pretest-posttest design. The research data such as the percentage of students who have misconceptions before and after IMR learning. The results showed IMR learning were effective to improve students' misconceptions in stoikiomteri.
Perbedaan Pengetahuan Metakognitif Siswa pada Materi Reaksi Reduksi Oksidasi Menggunakan Process Oriented Guided Inquiry Learning dengan Pembelajaran Verifikasi yang Dioptimalkan Imami, Vinda Cory; Effendy, Effendy; Utomo, Yudhi
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol. 2, No. 11
Publisher : citeus

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Abstract

The aim of the study to determine the metacognitive knowledge of students that include declarative knowledge, procedural knowledge, and conditional knowledge, on oxidation reduction reaction material for class X SMA Negeri 10 Malang. This research is a quasy experiment. The instruments used were metacognitive knowledge tests adapted from tests belonging to Rompayom et al. This test is a double-piecewise test and a description. The results showed that the students metacognitive knowledge on the oxidation reduction reaction material with verification learning is higher than POGIL.
Co-Authors Abda Abda Abdul K. Syahroni Abrilia, Putri Riza Adawiyah, Uciatul Afifah Afifah Agita Dzulhajh Anggraini Agung Witjoro Agustina, Nur Indah Al-‘adawiyah, Rabiah Aldya, Riantina Fitra Alma, Lucky Radita Anggreani, Selvi Dewi Nur Anis Samroatul Lathifah Annida Elfiana Citra Ardianty Anugrah Ricky Wijaya Aulia Qisti Bina Aulia Mahfuzah Burhanuddin Ronggopuro Burhanuddin Ronggopuro Ciptawati, Endang Danar Danar Deni Ainur Rokhim Denny Fatmawati Deny Setiawan Deny Setiawan DEWI ZUHRIYAH , UTIY Effendy Effendy Effendy Effendy Eli H. Sanjaya Eli Hendrik Sanjaya Eli Khusmawardani Ernis Nor Fadila Ernis Nor Fadila Etia, Chantiquenya Putri Fardani, Roushandy Asri Fatmawati, Denny Fauziatul Fajaroh Fikriyatul Maulidiyah Habiddin Hanifatul Azizah Hanumi Oktiyani Rusdi Hasminar Rachman Fidiastuti Hasminar Rachman Fidiastuti, Hasminar Rachman Hayuni Retno Widarti Hilda Srivaliana Ilham Iing Merillarosa Iklima, Ilma Kanzu Ima Rosyida Imami, Vinda Cory Indah Nur Pramesti Islamiyah, Kafita Krisnatul Isma Yanti Vitarisma Jacky Anggara Nenohai Jacky Anggara Nenohai Jacky Anggara Nenohai Nenohai Kafita Krisnatul Islamiyah Lathifah, Anis Samroatul Lathifah, Anis Samrotul Lintang Miftahul Rizki Ma'rifah, Winda Ashnaful Mahfuzah, Bina Aulia Maulidiyah, Fikriyatul Merillarosa, Iing Minata, Zelen Surya Minata Miranda, Nuri Trihasti Mohamad Amin Mohamad F. Setyawan Mohd F. M. D. Din Much S. Alwy Muhammad Afif Muhammad Dwi Rifa’i Muhammad Roy Asrori Muntholib Munzil Nafi’ah, Zahrotun Nanda Satria Anggara Nazriati Nazriati dkk. Neena Zakia Nenohai, Jacky Anggara Nilawati, Putri Arum Nur Chairini Nur Indah Agustina Nur Indah Agustina Nur Kholifah, Wakhi Datul Nur Rochmat Nur Rochmat NURFADILLAH , RESTIN Nurnaningsih Herya Ulfah, Nurnaningsih Herya P., Dewi Regita Permatasari, Suryani Indah Pramsesti, Indah Nur Purwaning Rohmah Putri Arum Nilawati Putri, Ade Elviana Putri, Deby Amelia Rafika Fauzia Ulfa Rama Derian Fikradhana Rama Derian Fikradhana Riska Ridayati Riza Agung Pribadi Rizki, Lintang Miftahul Rohmansah, Wahyu Ronggopuro, Burhanuddin Rooserina Kusumaningdyah Roushandy Asri Fardani RR. Ella Evrita Hestiandari Safitri, Frisca Nadya Sansan Hastuti Ningrum Sansan Hastuti Ningrum Sembiring, Rinawati Setya Ayu Aprilia Setyahari, Yurinda Sholikah, L. Putri Siti Marfuah, Siti Sofinila, Mida Fitri Agasty Subandi Subandi Subandi Subandi Suhadi Ibnu Suhadi Ibnu, Suhadi Suharti Sumari Sumari Surjani Wonorahardjo Suryani Indah Permatasari Taupik Hidayat, Taupik Thayban, Thayban Uciatul Adawiyah Vida Amalia Fitriani Vida Amalia Fitriani Vinda Cory Imami WAHYU SEPUTRI , VIA Wakhi Datul Nur Kholifah Wijaya, Dika Putra Wiwin Dwi Jayanti Yana Lazuardhana Shalsabilla Yolanda Nur Aini YUDHA TRIWAHYUNI , RATRI Yudhowati, Nuraini Rachma Yunisari, Yuneta Dwi Zahra Fajarani Zelen S. Minata Zelen Surya Minata Zelen Surya Minata Minata