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All Journal Jurnal Bios Logos International Journal of Information Techonology and Education (IJITE)
Lusia Sumenda
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Immunology & microbiology Medicine & Pharmacology Other

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Analisis Kandungan Klorofil Daun Mangga (Mangifera indica L.) pada Tingkat Perkembangan Daun yang Berbeda Sumenda, Lusia
JURNAL BIOS LOGOS Vol 1, No 1 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.1.1.2011.372

Abstract

AbstrakKajian tentang kandungan klorofil pada daun mangga dengan perbedaan warna pada tingkat perkembangan yang berbeda belum banyak dilakukan. Penelitian ini bertujuan untuk membandingkan kandungan klorofil daun mangga (Mangifera indica L.) pada tingkat perkembangan daun yang berbeda. Setelah daun diekstrak dengan alkohol 95%, kandungan klorofil diukur dengan menggunakan spektrometer tipe Novaspec III pada λ 649 dan 665 nm. Hasil penelitian menunjukkan perbedaan kandungan klorofil daun pada tingkat perkembangan yang berbeda.Kata kunci: daun mangga, klorofil, perkembanganAbstractThe study on chlorophyll concentration of mango leaf with different colour and different stage of development has not been conducted thoroughly. This study aimed to compare the chlorophyll concentration of mango leaf with different stage of development. After extracting leaf chlorophyll using alcohol 95%, chlorophyll concentration was measured using spectrometer (Novaspec III) on λ 649 and 665 nm. The result showed that the chlorophyll concentration was different among the leaves with different stages of development.Keywords: chlorophyll, development, mango leaf
Learning Quality Management Junior High School Accredited "A " (Multi-Site Study At Eben Haezar 1 Christian , Don Bosco Frater And SMP NEGERI 6 SMP In Manado City) Sumenda, Lusia; Lumapow, Harol; Sumual, Tinneke; Lengkong, Jeffry
International Journal of Information Technology and Education Vol. 3 No. 3 (2024): June 2024
Publisher : JR Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62711/ijite.v3i3.185

Abstract

Quality management of learning in schools greatly affects student learning activities. The quality of school graduates is a reflection of a quality in the school. This study aims to obtain the results of descriptive analysis of a situation from three accredited schools in Manado City, namely Eben Haezar 1 Christian Middle School, Manado, Bosco Manado Brother Middle School and Manado 6 Public Middle School. This study uses a qualitative approach with the survey/ observation method. The population of this study was the Principal and several teachers from three accredited junior high schools (Eben Haezar 1 Christian Middle School, Don Bosco Middle School and Manado 6 Public Middle School) in Manado City, North Sulawesi Province. The sample method used is a random sample. The research data was collected by observation, interviews and documentation and then analyzed by a single analysis and cross -site analysis. Conclusion Based on the results of this study is the application of management functions (planning, organizing, implementing, supervising) in Eben Haezar 1 Christian Middle School, Don Bosco Brother Middle School and SMP Negeri 6 in Manado City.
Co-Authors Jeffry Sony Junus Lengkong Lumapow, Harol R Tinneke Evie Meggy Sumual