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All Journal Jurnal Manajemen Pendidikan Journal of Agriculture and Applied Biology Journal of Agriculture and Applied Biology ( JAAB)
Kamel, Kamel
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education

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Effect of stationary factors on the yield and chemical composition of essential oils of Tetraclinis articulata (Vahl) Masters from Sdama Chergui massif’s (Tiaret, North-West Algeria) Bensaadi, Nawel; Mhamed, Maatoug; Maatoug, Zakaria Zineddine; Kamel, Kamel
Journal of Agriculture and Applied Biology Vol 5 No 2 (2024): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.05.02.07

Abstract

This paper aims to study the influence of exposure, altitude, and soil pH on the yield and chemical composition of essential oils (EOs) from the leaves of Tetraclinis articulata (Vahl) Masters, developed in the Sdama Chergui massif in northwestern Algeria. These EOs were obtained by hydrodistillation, resulting in average yields of 0.33±0.13 %, 0.29±0.07 %, 0.24±0.07 %, and 0.2±0.03 %, recorded at the south, west, north, and east exposures, respectively. Upon analyzing the obtained EOs by gas chromatography coupled with mass spectrometry (GC/MS), a total of chemical molecules grouped into 22 families were identified. The predominant compounds were Bornyl acetate (9.14 %, 7.95 %, 11.20 %, and 9.78 %), Limonene (5.03 %, 7.18 %, 5.76 %, and 5.41 %), α-Pinene (4.97 %, 5.26 %, 5.09 %, and 4.79 %), Camphor (7.53 %, 3.69 %, 3.01 %, and 5.91 %), and Borneol (5.20 %, 6.26 %, 4.93 %, and 5.11 %). Additionally, the analysis of these molecules by Factorial Analysis of Mixed Data (PCAmix) revealed that exposure, altitude, and soil pH have little effect on the yield and chemical composition of the essential oils of Tetraclinis articulata. Finally, careful attention to stationary parameters is crucial for obtaining essential oils of high quality and optimal quantity.
Effect of stationary factors on the yield and chemical composition of essential oils of Tetraclinis articulata (Vahl) Masters from Sdama Chergui massif’s (Tiaret, North-West Algeria) Bensaadi, Nawel; Mhamed, Maatoug; Maatoug, Zakaria Zineddine; Kamel, Kamel
Journal of Agriculture and Applied Biology Vol 5 No 2 (2024): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.05.02.07

Abstract

This paper aims to study the influence of exposure, altitude, and soil pH on the yield and chemical composition of essential oils (EOs) from the leaves of Tetraclinis articulata (Vahl) Masters, developed in the Sdama Chergui massif in northwestern Algeria. These EOs were obtained by hydrodistillation, resulting in average yields of 0.33±0.13 %, 0.29±0.07 %, 0.24±0.07 %, and 0.2±0.03 %, recorded at the south, west, north, and east exposures, respectively. Upon analyzing the obtained EOs by gas chromatography coupled with mass spectrometry (GC/MS), a total of chemical molecules grouped into 22 families were identified. The predominant compounds were Bornyl acetate (9.14 %, 7.95 %, 11.20 %, and 9.78 %), Limonene (5.03 %, 7.18 %, 5.76 %, and 5.41 %), α-Pinene (4.97 %, 5.26 %, 5.09 %, and 4.79 %), Camphor (7.53 %, 3.69 %, 3.01 %, and 5.91 %), and Borneol (5.20 %, 6.26 %, 4.93 %, and 5.11 %). Additionally, the analysis of these molecules by Factorial Analysis of Mixed Data (PCAmix) revealed that exposure, altitude, and soil pH have little effect on the yield and chemical composition of the essential oils of Tetraclinis articulata. Finally, careful attention to stationary parameters is crucial for obtaining essential oils of high quality and optimal quantity.
PENGEMBANGAN KURIKULUM MADRASAH IBTIDAIYAH NEGERI DALAM MENINGKATKAN MUTU PEMBELAJARAN Gustina, Gustina; Efendi, Rosman; Kamel, Kamel; Syakban, Ismail
Jurnal Manajemen Pendidikan Vol. 11 No. 1 (2026): Regular Issue (In Progress)
Publisher : STKIP Pesisir Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34125/jmp.v11i1.1841

Abstract

Objective: This study aims to analyze curriculum development at State Islamic Elementary Schools (Madrasah Ibtidaiyah Negeri) in improving the quality of learning. Methods: This research employed a qualitative descriptive approach with a case study design. Data were collected through observations, in-depth interviews with school principals and teachers, and documentation analysis related to curriculum planning and implementation. Data analysis was carried out through data reduction, data display, and conclusion drawing. Results: The findings indicate that curriculum development at Madrasah Ibtidaiyah Negeri has been implemented through planning, implementation, and evaluation stages, but it has not yet been carried out optimally. Constraints include limited teacher understanding of curriculum development, lack of managerial support, and inadequate learning facilities. Novelty: This study emphasizes the importance of managerial roles in curriculum development to systematically improve learning quality at Islamic elementary schools.
Co-Authors Bensaadi, Nawel Efendi, Rosman Gustina Gustina Maatoug, Zakaria Zineddine Mhamed, Maatoug Syakban, Ismail