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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Mesin Nusantara Journal Of Chemical Process Engineering Journal of Green Chemical and Environmental Engineering
Gusnawati
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation Other

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Rancang Bangun Mesin Pencacah Sampah Plastik Rumah Tangga Rihi, Ayub; Gusnawati; Arifin Sanusi
Jurnal Mesin Nusantara Vol 8 No 1 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i1.23878

Abstract

Peningkatan penggunaan plastik yang pesat akibat kemajuan teknologi dan gaya hidup praktis telah menyebabkan masalah serius dalam pengelolaan sampah plastik, terutama di lingkungan rumah tangga. Pada tahun 2023, sekitar 42,23% dari total sampah plastik di Indonesia dihasilkan oleh rumah tangga, dengan total mencapai 17,4 juta ton. Plastik sulit terurai dan memerlukan waktu ratusan tahun untuk terdegradasi secara alami. Meskipun pemerintah telah meluncurkan program 3R (Reuse, Reduce, Recycle) untuk menangani masalah ini, implementasinya di masyarakat terhambat oleh kurangnya fasilitas dan kesadaran untuk mendaur ulang sampah plastik. Salah satu solusi yang diusulkan adalah pengelolaan sampah plastik di tingkat rumah tangga melalui pencacahan, yang dapat mempermudah proses daur ulang. Penelitian ini bertujuan untuk merancang dan membangun mesin pencacah sampah plastik rumah tangga dengan proses pencacahan yang sederhana dan efisien. Mesin ini dirancang agar mudah digunakan di rumah tangga dan dapat membantu mengurangi volume sampah plastik. Hasil dari rancangan mesin ini mencakup berbagai komponen, seperti hoper input dan output, rangka, saringan, serta pisau bergerak dan pisau diam. Mesin ini menggunakan motor bensin dan sistem transmisi puli serta V-belt untuk menghubungkan motor dengan komponen pencacah. Mesin ini berhasil beroperasi dengan kapasitas 1100 rpm, menghasilkan ukuran cacahan plastik yang seragam, dan mampu mengolah 1 kg plastik dalam waktu 10 menit. Diharapkan mesin ini dapat mendukung upaya pengurangan timbunan sampah plastik rumah tangga dan mempercepat proses pendaur ulang.
Edible Coating Application Based on Snail Shell Chitosan in the Effort to maintain the Quality and Storage of Tofu Artiningsih, Andi; syarif, Takdir; Gusnawati; Febrian; Efendy, Moh. Irsal
Jurnal Penelitian Pendidikan IPA Vol 11 No 7 (2025): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i7.11597

Abstract

Tofu also has a weakness, namely its high water content, so it is easily damaged because it is easily overgrown by microbes. Preservatives added are not limited to preservatives that are allowed, but many businessmen are naughty by adding formalin. White tofu is one that is circulating in the market. At room temperature the yower storage knows an average of 1-2 days. Efforts to preserve tofu by means of steaming and storing in a refrigerator can only preserve tofu for 1 day. This causes traders to commit fraud, one of which is preserving tofu so that it is durable, one of which is the addition of chemicals. According to the Food and Drug Supervisory Agency (BPOM). The treatment research method with the application of chitosan as an edible coating on white tofu is carried out in four stages, namely the preparation stage, immersion stage, storage stage, and testing stage. The preparation stage is carried nut by preparing all the materials and tools that will be used in the immersion, storage and testing stages. The immersion stage was done by soaking white tofu with concentrations varying of 0.5%  The results of the long storage test for tofu coated with chitosan showed that the tofu soaked with chitosan solution with the addition 0.01 %.
The Effect of Temperature and Storage Time on the Quality of Frozen Food Nuggets Lastri Wiyani; Gusnawati; Muhammad Fauzan; Nur Annisa
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1656

Abstract

This study aims to determine the effect of storage temperature on the quality of nuggets (frozen food) and the effect of storage time on their quality.The test results showed that the Total Plate Count at room temperature (28ºC-30ºC) on day 1 did not meet the standard. Similarly, at refrigerator temperature (10ºC), the values on days 12 and 16 did not meet the standard. Meanwhile, at freezer temperature (-16ºC), all samples met the standard of <105 cfu/g. For the Yeast and Mold test, the results did not meet the standard at room temperature (28ºC-30ºC) on day 1 and at refrigerator temperature (10ºC) on days 12 and 16. However, at freezer temperature, the nugget samples met the standard requirement of a maximum of 1 × 10⁴ cfu/g.The E. coli test results for all storage conditions (room temperature, refrigerator, and freezer) met the requirement of <3 cfu/g. For the Coliform test, the sample stored at room temperature on day 1 did not meet the requirement, whereas samples stored at refrigerator and freezer temperatures met the standard of 10 cfu/g. In the Proximate Analysis, nuggets stored at room temperature had a moisture content of 51.66%, protein content of 9.62%, and fat content of 10.05%. Meanwhile, those stored at freezer temperature had a moisture content of 61.48%, protein content of 10.23%, and fat content of 10.36%. However, some proximate components, such as moisture and fat content, increased during storage.
IMPLEMENTASI GAYA KEPEMIMPINAN TRANSFORMASIONAL KEPALA TAMAN KANAK-KANAK ALFASIHI Suhartini; Gusnawati; Rosmini; Damayanti; Andi Hartati; Syamsiar; Besse Herlina
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 03 (2025): Volume 10 No. 03 September 2025
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i03.30300

Abstract

This paper discusses the implementation of transformational leadership by the Principal of Alfasihi Kindergarten (TK Alfasihi). Transformational leadership is considered crucial in creating an innovative and adaptive educational environment, particularly at the early childhood education level. This research employs a qualitative approach with a case study method to analyze how the Principal of TK Alfasihi applies the four dimensions of transformational leadership: idealized influence, inspirational motivation, intellectual stimulation, and individualized consideration. Data were collected through observations, interviews with the principal and teachers, and document analysis. The results show that the Principal of TK Alfasihi has successfully implemented a transformational leadership style, which has had a positive impact on teacher performance, student learning motivation, and the overall organizational culture of the school. The implications of these findings provide insights into the importance of transformational leadership in enhancing the quality of early childhood education.
Activated Carbon from Sawdust Biomass Via ZnCl₂ and NaOH Activation for Water Biofiltration Applications Hamid, Syarwan; Gusnawati; Thahirah Arief; Muh. Ilham Anggamulia; Hijrah Amaliah Azis; Muh Arman
Journal of Green Chemical and Environmental Engineering Vol. 1 No. 4 (2025): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v1i4.18

Abstract

The declining availability of fossil energy sources in Indonesia has driven the development of renewable and environmentally friendly alternatives, including the utilization of biomass waste such as teak sawdust (Tectona grandis L.F.). This study aims to produce activated carbon via pyrolysis and chemical activation using ZnCl₂ and NaOH for water filtration applications. Pyrolysis was conducted at 300-400°C with biomass-to-activator ratios of 1:3, 1:5, and 1:7. SEM analysis revealed that chemical activation increased pore number and size; ZnCl₂ produced larger and more complex pore structures, while NaOH resulted in more uniform pores. FTIR spectra showed a reduction in hydroxyl (O–H), carbonyl (C=O), and ether (C–O) groups with increasing temperature, along with the emergence of aromatic (C=C) bands, indicating enhanced carbonization and structural stability. NaOH activation at 380°C yielded the highest iodine adsorption (1124 mg/g), while ZnCl₂ was optimal at 320 °C (980 mg/g). These results demonstrate that teak sawdust-derived activated carbon possesses a microporous structure and functional surface groups suitable for water purification and efficient removal of organic contaminants
Co-Authors Andi Artiningsih Andi Hartati Arifin Sanusi Damayanti Efendy, Moh. Irsal Fachry Abda El Rahman Hamid, Syarwan Herlina, Besse Hijrah Amaliah Azis Indradewa, Rhian Muh Arman Muh. Ilham Anggamulia Muhammad Fauzan Nur Annisa Rihi, Ayub Rosmini Suhartini Takdir Syarif Thahirah Arief