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All Journal Jurnal Reka Lingkungan Journal of Degraded and Mining Lands Management PRISMA Jurnal Serambi Engineering Jurnal Rekayasa Hijau Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Jurnal Untuk Masyarakat Sehat (JUKMAS) Green Governance: Exploring Politics, Social Justice, and the Environment
M Candra Nugraha Deni
Institut Teknologi Nasional Bandung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Energy Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Public Health Social Sciences Transportation

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Tinjauan Kebijakan Pengelolaan Limbah Medis Infeksius Penanganan Corona Virus Disease 2019 (Covid-19) Nugraha, Candra
Jurnal Untuk Masyarakat Sehat (JUKMAS) Vol 4, No 2 (2020): Jurnal Untuk Masyarakat Sehat (JUKMAS)
Publisher : LPPM Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jukmas.v4i2.1004

Abstract

Satu aspek penting dalam penangan wabah Corona Virus Disease 2019 (Covid-19) adalah penangangan limbah medis yang dihasilkan, baik dari pasien maupun petugas medis. Pemerintah pusat dan Pemerintah Daerah Provinsi Jawa Barat telah mengeluarkan kebijakan-kebijakan terkait pengelolaan limbah medis infeksius yang berasal dari fasilitas pelayanan kesehatan, rumah sakit darurat, maupun rumah karantina/isolasi mandiri.Terdapat 5 (lima) kebijakan dari pemerintah pusat dan 2 (dua) kebijakan Pemerintah Provinsi Jawa Barat yang ditinjau berdasarkan tahapan pengelolaan limbah B3.Hasil tinjauan menujukkan bahwa, meskipun kebijakan dikeluarkan tidak secara terpadu, namun tahapan pengelolaan limbah medis infeksius telah ditetapkan dengan cukup jelas dan dapat dijadikan sebagai acuan. Acuan ini sangat penting untuk pelaksanaan pengelolaan limbah medis infeksius pada masa darurat sekarang ini, untuk menghindari terjadinya penyebaran virus melalui media limbah medis. 
The Influence of Origami on Spatial Abilities in Mathematics Learning Nugraha, Candra; Prabawanto, Sufyani; Kurniawati, Ririn
PRISMA Vol 14, No 2 (2025): PRISMA
Publisher : Universitas Suryakancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35194/jp.v14i2.5688

Abstract

The essential mathematical ability related to geometric perception is spatial ability. Through this ability, one can develop geometric reasoning abilities in everyday life. In some literature, spatial ability is closely related to various applied fields in life. One way to develop and hone this ability is through the art of origami paper folding. In several studies, it has been found that origami can enhance students' spatial abilities at various educational levels. Origami is the art of folding paper that is utilized for teaching basic geometric shapes through folds that form simple structures, which can serve as a bridge for students to understand how the objects they fold are formed. This origami folding can be used to train and enhance the spatial abilities of students from various educational levels. Teaching origami can foster and develop students' enthusiasm in learning mathematics, especially geometry. Origami has a positive correlation with mathematics learning outcomes in the classroom, particularly regarding geometry topics.
Relationship between NDVI and soil physicochemical properties in the Martabe gold mine reclamation area, Indonesia Alfina, Rina; Iskandar, Iskandar; Suryaningtyas, Dyah Tjahyandari; Mulyanto, Budi; Nugraha, Candra; Asman, Auzia; Novfirman; Anwar, Syaiful; Pulungan, Yuni Hartinah
Journal of Degraded and Mining Lands Management Vol. 13 No. 2 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.132.9929

Abstract

Open-pit gold mining has greatly affected the ecological balance by altering soil properties and reducing natural vegetation cover. Reclamation efforts through soil and vegetation recovery are therefore essential to help rebuild the disturbed ecosystem. This study examined how the Normalized Difference Vegetation Index (NDVI) relates to soil physicochemical properties in the Martabe gold mine reclamation area, North Sumatra, Indonesia. Vegetation recovery at different reclamation ages was analyzed using multitemporal Landsat 8 images. Soil samples were taken from the same locations at depths of 0-15 cm and 15-30 cm to observe changes in soil characteristics. Data were analyzed using Principal Component Analysis (PCA) to identify the main factors linking vegetation and soil conditions. Key ecological indicators were determined through the Minimum Data Set (MDS) approach. The PCA results indicated that the primary components explained 90.7% of the variation in soil physical properties and 74.6% of the variation in chemical properties. Important indicators of the ecological recovery were NDVI, bulk density, porosity, aggregate stability, organic carbon, total nitrogen, cation exchange capacity (CEC), and base saturation. The rise in NDVI values coincided with improved soil conditions, showing a relationship between vegetation re-growth and soil quality improvement.
Co-Authors Alfianabila Yusfiaka Artiwi Asman, Auzia Budi Mulyanto Deandra Auliana Izmah Dyah Tjahyandari Suryaningtyas Eka Wardhani Elli Ruslina Hartati, Etih Iskandar Iskandar Juli Soemirat Kurniawati, Ririn Melisa Permatasari Mochamad Ulwan Pasha Muhammad Farhan Novfirman Nur Afifah Sari Permadi, Gilang Satria Plucheria Pritta Aquila Pulungan, Yuni Hartinah Rina Alfina Sufyani Prabawanto, Sufyani Syaiful Anwar Trisha Ajeng Larasaty