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All Journal Jurnal Kreativitas PKM KURVATEK Jurnal Sains Agro JUMATISI : Jurnal Mahasiswa Teknik Sipil Journal Serambi Engineering (JSE) Public Health Research Development Advance Sustainable Science, Engineering and Technology (ASSET)
Wisnu Prayogo
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Agriculture, Biological Sciences & Forestry Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation

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PENENTUAN KOEFISIEN TRANSFER MASSA PADAT CAIR PADA SISTEM TAWAS AIR DENGAN VARIASI KECEPATAN PUTARAN DAN DIAMETER PENGADUK Ani Purwanti; Muhammad Yusuf; Wisnu Prayogo; Uli Anita Ambarita
KURVATEK Vol 7 No 1 (2022): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v7i1.3128

Abstract

Solid-liquid mass transfer data is very necessary for the design of mass transfer equipment, in which the coefficient determination is influenced by the rotation speed and diameter of the stirrer. Thus, this study aims to investigate the effect of variations in stirring speed and stirrer diameter on the mass transfer coefficient of a solid-liquid system. This research was conducted in a stainlesssteel stirred vessel with a diameter of 5 – 19.5 cm and a height of 20 cm equipped with baffles. The alum used was sized to pass a 20mesh sieve and retained by a 30mesh sieve. Alum was then put into a vessel with water as a solvent and stirred with stirring speed varies from 100-500 rpm. Every 10 seconds, 5 ml of sample was taken to analyze the concentration of alum by measuring its density. This experiment was carried out with variations in the speed of the stirrer rotation and the diameter of the stirrer with a constant D/Dt ratio. The result showed that there is a relationship between the mass transfer coefficient with the variables studied for the alum-water granular system in a stirred tank. The calculation results show an average deviation error of 0.66%. The dimensionless equation can be used to accurately evaluate the mass transfer coefficient experiment.
Modeling Air Pollutant Dispersion in Urban Areas: A HYSPLIT-Based Analysis of PM 2.5 Dynamics in Medan, Indonesia Mustaqiman, Aulia Nur; Tia Dwi Irawandani; Wisnu Prayogo; Sapta Suhardono
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

Abstract

Air pollution is a critical environmental challenge in urban areas, particularly developing regions like Medan, Indonesia. This study aims to analyze the dynamics of PM 2.5 dispersion, identify pollution sources, and assess the role of meteorological factors in influencing air quality. Using the HYSPLIT model, the research examines pollutant transport and dispersion over ten months, specifically focusing on a high-pollution episode in May 2024. The study integrates meteorological data and local air quality measurements to simulate forward and backward trajectories at multiple altitudes. The results reveal that PM 2.5 concentrations in Medan are driven by local emissions, such as transportation and industrial activities, and transboundary pollution from biomass burning in neighboring provinces. Higher altitudes capture the influence of regional winds, while localized sources and atmospheric turbulence dominate near-surface levels. Meteorological conditions, including wind patterns, temperature stability, and rainfall, significantly affect pollutant dispersion and accumulation. By leveraging advanced modeling tools and meteorological data, the study provides a robust framework for air quality management in urban environments. These insights contribute to the broader understanding of pollution dynamics and support evidence-based strategies to protect public health and the environment.
Impact of Work Environment Noise on Cardiovascular Conditions: A Study of Blood Pressure and Heart Rate in Workers (Heavy Equipment Manufacturing) in East Java Samudra, Permana Adhenan; Rachmaniyah; Ipmawati, Putri Arida; Suprijandani; Ambarwati; Rosyidah, Anni Ilma; Wisnu Prayogo
Public Health Research Development Vol. 1 No. 2 (2024): Public Health Research Development
Publisher : Indonesian Association Environmental Health of West Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36568/phrd.v1i2.8

Abstract

Workplace noise is one of the physical factors that is often overlooked, although long-term exposure can have serious impacts on cardiovascular health. In workers exposed to noise, blood pressure and heart rate often increase as the body's response to physical stress. This physiological mechanism triggered by prolonged noise can result in an increased risk of cardiovascular disorders, including hypertension and heart rhythm disorders. The purpose of this study was to analyze the effect of noise on increasing blood pressure and heart rate in workers in the workshop area, especially the dynotest room. This type of research is observational with a cross-sectional research design. Conducted in December - May 2024 with the object of research on workers exposed to noise in the workshop area, especially the dynotest room. Data were analyzed using the Logistic Regression test. The total sample was 40 workers in the workshop area and dynotest room. Data were collected from observations, room noise measurements, blood pressure, and heart rate. Based on the results of the study, the average results for the dynotest area were 83.5 dBA, while for the dynotest room, the average results were 117.8 dBA. The results of statistical tests of blood pressure and pulse rate in workers obtained a sig value = 0.001. These results indicate an increase in blood pressure and pulse rate due to noise. It is recommended for the Company to monitor workers to find out the disorders caused by noise.
Mechanical Performance of Alkali-Treated Rattan Strips with Epoxy Coating for Sustainable Composite Applications Kalatharan, Sujentheran Nair; Imran, Al Ichlas; Irawan, Agustinus Purna; Siregar, Januar Parlaungan; Cionita, Tezara; Fitriyana, Deni Fajar; Anis, Samsudin; Dewi, Rozanna; Setyoadi, Yuris; Wisnu Prayogo
Advance Sustainable Science Engineering and Technology Vol. 7 No. 3 (2025): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i3.2017

Abstract

The use of natural materials like rattan in eco-friendly composites is gaining attention in materials engineering. However, its hydrophilic nature and interaction with other materials can affect mechanical strength. This study investigates how variations in rattan size and alkali treatment influence the tensile properties of single rattan strips through an epoxy dipping process. Rattan was prepared with varying lengths (5–15 cm), widths (3–8 mm), and a consistent thickness (0.5 mm). Alkali treatment used 5% and 10% NaOH concentrations for 1 and 24 hours. Tensile testing showed that a 5 cm × 8 mm strip achieved the highest tensile strength (49.95 MPa), Young's modulus (3562.77 MPa), and low strain (5.4%), while the 15 cm × 3 mm strip had the lowest strength (9.48 MPa) and modulus (475.69 MPa) with higher strain (10.32%). A 5% NaOH treatment for 24 hours improved adhesion and performance, while 10% caused degradation.
Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk Etanto Heiliano Wijayanto; Imran, Al Ichlas; Siregar, Januar Parlaungan; Mohd Ruzaimi Mat Rejab; Tezara Cionita; Wisnu Prayogo; Deni Fajar Fitriyana; Rozanna Dewi; Thomas Junaedi; Agustinus Purna Irawan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2052

Abstract

This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples based on tensile strength (19.58 MPa), tensile modulus (1.70 GPa), flexural strength (44.55 MPa), and flexural modulus (2.32 GPa). On the other hand, CH 30 wt.% contributed the highest hardness value of 50.33 HRB compared to other samples. The findings in this study prove that the appropriate composition will affect the compatibility between the filler and the matrix, thus impacting the mechanical properties of the composite. This phenomenon can be seen based on microscope analysis, which shows a strong interaction between the matrix and filler and the formation of voids and agglomeration
SAMPAH MAKANAN SEBAGAI SUMBER EMISI CO2-ekuivalen: STUDI KASUS DAN RENCANA MANAJEMEN STRATEGIS DI RESTORAN-RESTORAN DI KAWASAN KEMILING, BANDAR LAMPUNG Nurul Mawaddah; Wisnu Prayogo
Jurnal Sains Agro Vol 11, No 1 (2026): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/jsa.v11i1.1969

Abstract

Sampah makanan menimbulkan kekhawatiran terkait ketahanan pangan dan menyebabkan emisi gas rumah kaca. Karena konsumsi yang tinggi dan prosedur operasional, restoran berkontribusi terhadap limbah makanan. Studi ini meneliti pembangkitan, komposisi, dan jejak karbon limbah makanan restoran serta mengembangkan strategi pengelolaan tanpa limbah. Pada Agustus 2024, pengambilan sampel bertingkat proporsional digunakan untuk memilih 15 restoran besar, menengah, dan kecil untuk penelitian ini. Pengambilan sampel langsung limbah makanan dari sisa dapur dan sisa makanan di piring; nasi, hidangan berbasis hewan, sayuran, dan hidangan berbasis tumbuhan; dilakukan selama delapan hari untuk mengumpulkan data primer. Jejak karbon diperkirakan dengan menggunakan estimasi faktor emisi, analisis deskriptif, dan analisis SWOT. Restoran membuang 37,8 kg makanan setiap hari, terutama nasi (52,66%) dan daging (dampak karbon tertinggi). Jejak karbon harian yang diperkirakan adalah 339,8 kg CO₂-eq, atau 134.150,2 kg per tahun. Analisis SWOT menunjukkan restoran di Kuadran I memiliki kemampuan internal yang kuat dan potensi ekspansi eksternal yang baik. Studi ini menyimpulkan bahwa manajemen porsi tanpa limbah, pemantauan kualitas, pemisahan limbah, dan edukasi konsumen mengurangi emisi dan meningkatkan keberlanjutan restoran.
ANALISIS KINERJA SISTEM DRAINASE PERKOTAAN MENGGUNAKAN PENDEKATAN HIDROLOGI, HIDROLIKA, DAN SPASIAL DI KECAMATAN MEDAN DENAI Rizky Simanjuntak; Sagita Triswati Munte; Samuel Crescendo Sirait; Wisnu Prayogo; Rumila Harahap; Daniel Anderson Munthe; Arissha Anggraini
JUMATISI: Jurnal Mahasiswa Teknik Sipil Vol 7 No 1 (2026): JUMATISI (Jurnal Mahasiswa Teknik Sipil)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/jumatisi.v7i1.11314

Abstract

Permasalahan genangan dan banjir di kawasan perkotaan umumnya disebabkan oleh kinerja sistem drainase yang belum optimal. Kecamatan Medan Denai sebagai salah satu wilayah berkembang di Kota Medan memiliki potensi permasalahan drainase akibat peningkatan curah hujan, pertumbuhan penduduk, serta perubahan tata guna lahan. Penelitian ini bertujuan untuk menganalisis kinerja sistem drainase di Kecamatan Medan Denai secara komprehensif.Metode yang digunakan meliputi analisis hidrologi untuk menentukan debit rencana berdasarkan data curah hujan, analisis debit limpasan dengan mempertimbangkan koefisien aliran dan kontribusi limbah domestik, serta analisis hidraulika untuk mengevaluasi kapasitas saluran drainase eksisting. Selain itu, dilakukan observasi lapangan untuk mengidentifikasi kondisi fisik saluran, seperti sedimentasi dan penyumbatan, serta analisis spasial untuk menentukan titik-titik genangan. Hasil penelitian menunjukkan bahwa sebagian saluran drainase di lokasi penelitian tidak mampu menampung debit rencana, sehingga berpotensi menimbulkan genangan. Faktor utama yang mempengaruhi kinerja drainase meliputi kapasitas saluran yang tidak memadai, sedimentasi, serta kurangnya pemeliharaan. Oleh karena itu, diperlukan upaya peningkatan kapasitas saluran, pengendalian sedimen, serta pemeliharaan rutin untuk meningkatkan kinerja sistem drainase.Penelitian ini diharapkanapat menjadi dasar dalam perencanaan dan pengelolaan sistem drainase yang lebih efektif dan berkelanjutan di Kecamatan Medan Denai.
Edukasi Terpadu Berbasis Komunitas Melalui Pendekatan Smart Village Untuk Mendukung Program Kampung Iklim Rachmat Mulyana; Darwin Darwin; Novrizaldi Wardana; Mita Dwi Putri; Wahyu Hutria; Esi Emilia; Kasmita Kasmita; Regania Pasca Rassy; Muhammad Iqbal Raissilki; Wisnu Prayogo; Edo Berlian
Jurnal Kreativitas Pengabdian Kepada Masyarakat (PKM) Vol 9, No 6 (2026): Volume 9 Nomor 6 (2026)
Publisher : Universitas Malahayati Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jkpm.v9i6.25898

Abstract

ABSTRAK Fenomena iklim ekstrim yang semakin meningkat dalam beberapa tahun terakhir telah memicu berbagai permasalahan lingkungan di wilayah perkotaan, salah satunya meningkatnya frekuensi kejadian banjir. Penyebab lain ditemukan kondisi lingkungan perkotaan, serta rendahnya kapasitas pengelolaan lingkungan berbasis masyarakat. Program Kampung Iklim (Proklim) dengan pendekatan Smart Village menjadi salah satu strategi untuk pemberdayaan masyarakat dalam mengatasi permasalahan lingkungan. Kegiatan pengabdian ini bertujuan untuk mengembangkan model pemberdayaan masyarakat berbasis Smart Village guna mendukung penguatan Kampung Iklim di Kota Medan. Mitra kegiatan adalah komunitas sekolah SDIT Amrullah Akbar. Solusi yang ditawarkan dengan melakukan (1) Desain Taman edukasi lingkungan, (2) Edukasi Siswa dan Peran orang tua dalam penguatan kampung iklim, (3) Pemanfaatan pekarangan sekolah dengan Vertikal farming, Budikdamber dan (4) Fasilitasi pengakuan komunitas kampung iklim. Metode pelaksanaan menggunakan pendekatan edukatif dan partisipatif melalui kegiatan sosialisasi, pelatihan, praktik lapangan, serta pendampingan berkelanjutan. Target luaran mencakup peningkatan jumlah kampung iklim, meningkatnya partisipasi masyarakat, terbentuknya sistem bank sampah digital, serta pengakuan komunitas SDIT Amrullah Akbar sebagai salah satu kampung iklim. Program ini telah mendukung mitigasi dan adaptasi perubahan iklim berbasis teknologi dan pemberdayaan masyarakat menuju lingkungan tangguh dan berkelanjutan. Masyarakat yang tergabung dalam komunitas SDIT Amrullah Akbar mulai mengimplementasikan teknologi sederhana seperti komposter, vertikultur, dan lampu LED hemat energi sebagai bagian dari upaya mitigasi perubahan iklim. Penerapan teknologi tepat guna tersebut terbukti membantu mengurangi timbulan sampah, menambah ruang hijau, dan menekan emisi karbon di lingkungan sekitar. Kata Kunci: Edukasi, Komunitas, Kampung Iklim, Smart Village. ABSTRACT The increasing frequency of extreme climate events in recent years has contributed to various environmental challenges in urban areas, particularly the rising incidence of flooding. Contributing factors include suboptimal urban environmental conditions and limited community capacity in environmental management. The Climate Village Program, implemented through a Smart Village approach, represents a strategic framework for community empowerment in addressing these environmental issues. This community service initiative aimed to develop a Smart Village–based community empowerment model to strengthen the Climate Village Program in Medan City. The project partner was the SDIT Amrullah Akbar school community. The proposed interventions included: (1) the development of an environmental education park; (2) student education and parental engagement in strengthening the Climate Village initiative; (3) optimization of schoolyard utilization through vertical farming and Budikdamber (fish cultivation in buckets); and (4) facilitation of formal recognition as a Climate Village community. The program was implemented using an educational and participatory approach through socialization sessions, training, field practice, and continuous mentoring. The targeted outcomes included an increase in the number of Climate Villages, enhanced community participation, the establishment of a digital waste bank system, and official recognition of the SDIT Amrullah Akbar community as a Climate Village. The program contributed to technology-based climate change mitigation and adaptation efforts while promoting community empowerment toward a resilient and sustainable environment. The community has begun adopting simple technologies, such as composting, vertical gardening, and energy-efficient LED lighting, as part of climate mitigation strategies. The implementation of these appropriate technologies has demonstrably reduced waste generation, expanded green spaces, and lowered carbon emissions in the surrounding environment. Keywords: Education, Community Empowerment, Climate Village, Smart Village.
Co-Authors Abd. Rasyid Syamsuri Agustinus Purna Irawan Ambarwati Ani Purwanti Arissha Anggraini Cionita, Tezara Daniel Anderson Munthe Darwin Darwin Edo Berlian Emilia, Esi Etanto Heiliano Wijayanto Fitriyana, Deni Fajar Imran, Al Ichlas Junaedi, Thomas Kalatharan, Sujentheran Nair Kasmita Kasmita Mita Dwi Putri Mohd Ruzaimi Mat Rejab Muhammad Iqbal Raissilki Mustaqiman, Aulia Nur Novrizaldi Wardana Nurul Mawaddah Putri Arida Ipmawati, Putri Arida Rachmaniyah Rachmat Mulyana Regania Pasca Rassy Rizky Simanjuntak Rosyidah, Anni Ilma Rozanna Dewi Rumila Harahap Sagita Triswati Munte Samsudin Anis Samudra, Permana Adhenan Samuel Crescendo Sirait Sapta Suhardono Siregar, Januar Parlaungan Tezara Cionita Tia Dwi Irawandani Uli Anita Ambarita Wahyu Hutria Yuris Setyoadi