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All Journal Jurnal Pendidikan Inklusi Citra Bakti Journal of Clean Technology
Putri, Sheila
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Education Engineering Other

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ANALISIS KEMAMPUAN BELAJAR OPERASI HITUNG PERKALIAN PADA PESERTA DIDIK KELAS 4D SDN KEMAYORAN 1 BANGKALAN Putri, Sheila; Isna Ida Mardiyana; Siska Trisnayanti
Jurnal Pendidikan Inklusi Citra Bakti Vol. 2 No. 2 (2024): Jurnal Pendidikan Inklusi Citra Bakti
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat STKIP Citra Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38048/jpicb.v2i2.4635

Abstract

This research aims to find out more about the ability to learn multiplication calculation operations in class 4D students at SDN Kemayoran 1 Bangkalan. The method used during the research was descriptive qualitative method. With the article that the researcher has presented, students' understanding of the mathematical operations of multiplication is very good. Even during learning, they are very enthusiastic and active when the teacher gives questions about multiplication. The research results show that during learning, students are very enthusiastic and active when the teacher gives questions about multiplication. For researchers, arithmetic operations are initial material and also very important material for students to be able to start learning mathematics. By mastering the material on arithmetic operations, students will also make it easier to accept and continue other mathematical material. This is very important to become a basis for students and also to implement it in the community because mathematical skills are really needed in everyday life.
Energy Consumption and Efficiency Optimization in Freeze Drying of Fruits and Vegetables: A Review Zudana, Kirana; Wahyuni, Fitri; Putri, Sheila; Lestari, Yuniar
Journal of Clean Technology Vol. 2 No. 1 (2025): February 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/joct.v2i1.28102

Abstract

Fruits and vegetables are essential for global nutrition and economic growth, yet they are among the most perishable food commodities, contributing to major postharvest losses worldwide. Freeze drying is widely recognized as a superior preservation method that maintains the structural integrity, nutritional value, and sensory quality of fresh produce. Despite its advantages, freeze drying is energy-intensive, posing challenges for cost-effectiveness and sustainability in large-scale applications. This review explores the freeze drying process in detail, highlighting the critical operational parameters such as freezing rate, chamber pressure, shelf temperature, and sample thickness, that influence both product quality and energy consumption. Additionally, the role of cryoprotectants in preserving bioactive compounds during drying is discussed. By identifying optimization strategies for these parameters, this study aims to support the development of more energy-efficient and economically viable freeze drying systems for the fruit and vegetable processing industry.
Co-Authors Fitri Wahyuni Isna Ida Mardiyana Siska Trisnayanti Yuniar Lestari Zudana, Kirana