Headmaster Technology Leadership in Malaysia Elementary Schools

Headmaster technology leadership increasingly important in education today. This leadership, providing various positive effects to the headmaster, teachers, students and schools. Therefore, headmaster need to master this leadership to take up the leadership role of technology in schools. Based on the Headmaster Technology Leadership Model by Chang (2003), a study based on interviews conducted on 6 headmasters serving in Johor, Malaysia. This study aims to review i) the role of the headmaster in Johor as a technology leader in school ii) the challenges faced by headmaster to serve as a technology leader. Analysis of the findings from interviews found the headmaster in Johor play a role as a technology leader in the school. However, the findings have found the effort in ICT development by the headmaster in schools is different based on the needs of the school. Therefore, there is no single fixed pattern headmaster role as a technology leader. In addition, the role of the headmaster as a technology leader is not comprehensive of the five dimensions as suggested by Chang (2003). Headmaster of Johor advised to make improvements to the school led to the transformation of technology-based education

Penggunaan Limbah Ikan Leubiem (Chanthidermis maculatus) dalam Ransum terhadap Kelayakan Usaha Itik Petelur Fase Starter

Pakan merupakan faktor yang memengaruhi biaya produksi itik petelur, biaya pakan mencapai 70% dari total biaya produksi, untuk itu diperlukan pakan alternatif yang dapat mengurangi biaya produksi, salah satunya adalah limbah ikan leubiem (Chanthidermis maculatus). Penelitian bertujuan untuk mengevaluasi penggunaan limbah ikan leubiem dalam ransum terhadap kelayakan usaha itik petelur fase starter. Materi penelitian yang digunakan 500 ekor itik petelur umur 1 hari (DOD). Perlakuan ransum yang digunakan: P1 (ransum kontrol/tanpa limbah ikan leubiem), P2 (ransum mengandung 10% kulit ikan leubiem), P3 (ransum mengandung 10% kepala ikan leubiem), P4 (ransum mengandung 10% tulang ikan leubiem) dan P5 (ransum mengandung 10% kombinasi limbah ikan leubiem). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri 5 perlakuan dan 4 ulangan. Variabel yang diamati adalah: harga ransum, biaya produksi, IOFC, penerimaan (hasil penjualan), keuntungan dan kelayakan usaha. Data yang diperoleh ditabulasi dan dikalkulasi sesuai dengan variabel penelitian. Hasil penelitian menunjukkan bahwa harga ransum itik petelur fase starter berkisar antara Rp. 4.081,- 5.205,-/kg. Total biaya produksi terendah terdapat pada perlakuan ransum P5 yaitu Rp. 26.270,-/ekor. Penerimaan diperoleh dari hasil penjualan itik petelur fase starter berdasarkan bobot hidup Rp. 40.000/kg. IOFC dan keuntungan tertinggi diperoleh pada perlakuan ransum P5 yaitu Rp. 17.318,-/ekor. Kelayakan usaha berdasarkan nilai BC dan RC ratio dari semua perlakuan ransum menunjukkan nilai yang diperoleh lebih besar dari 0 dan 1. Hal ini menunjukkan bahwa usaha itik petelur menguntungkan dan layak diusahakan. Disimpulkan bahwa usaha peternakan itik petelur fase starter dengan penggunaan limbah ikan leubiem dalam ransum layak untuk diteruskan dan menguntungkan

Pengaruh Aplikasi Asam Humat Dan Pemupukan Fosfor Terhadap Serapan Unsur Hara P Dan K Tanaman Tomat (Lycopersicum Esculentum)

Tujuan penelitian ini adalah untuk mengetahui pengaruh aplikasi asam humat dan pemupukan fosfor terhadap serapan hara P dan K tanaman tomat. Penelitian dilakukan di Rumah Kaca dan Laboratorium Ilmu Tanah Fakultas Pertanian Universitas Lampung menggunakan perlakuan yang disusun secara faktorial (5×2) dalam Rancangan Acak Lengkap dengan 3 ulangan pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa serapan hara P dan K tanaman tomat tidak dipengaruhi oleh aplikasi asam humat dan pemupukan fosfor. Pemupukan fosfor berpengaruh lebih baik terhadap bobot kering, serapan P, dan K tanaman tomat, kecuali pada kadar K tanaman tomat menjadi tidak lebih baik dan tidak berpengaruh terhadap kadar P tanaman tomat. Pengaruh aplikasi asam humat tidak tergantung dari pemupukan fosfor dalam meningkatkan serapan P dan K tanaman tomat

Estimation of temperature and electron density in stainless steel plasma using laser induced breakdown spectroscopy

LIBS plasma produced by a 1064 nm Q-switched Nd:YAG laser in an atmospheric pressure was studied for the stainless steel sample. The laser output energy 150 mJ with pulse duration of 6 ns. The plasma emission spectrum was recorded by the LR1 Spectrometer connected to the fibre optic. The plasma temperature and electron density of each element were estimated by time-resolved spectroscopy of neutral atom and ion line emission. The plasma temperature was obtained from the Boltzmann plot method and their electron density was determined by using Saha-Boltzmann equation method. The preliminary qualitative LIBS analysis shows that several elements contained in the stainless steel. The element detected was Cu, Fe, Mn, Ni, and Cr. The results shows that Mn and Fe has the highest plasma temperature of 1.2 eV, but the electron density of Mn was the highest with value 4.6x1020 cm-3, while the Cu has the lowest temperature that is 0.73 eV with the electron density 2.8x1017 cm-3. The results are discussed

Ethnopharmacology Potentials of Mangrove Bulalo, North Gorontalo

Ethnopharmacology is the study of the practical utilization of mangrove plants which have been used as a source of traditional medicine by people living in certain areas since ancient times for generations. This study aims to determine the diversity of mangrove species as the ethnopharmacology of Bulalo, Kwandang District, North Gorontalo. The research was conducted from March to May 2023. The method used in this study was semi-structured interviews. The results showed that species that have the potential for ethnopharmacology are widely used by local people as traditional medicines. Based on the results of interviews with the local community, of the 14 ethnopharmacological species found in Bulalo Village, 7 species have medicinal properties and have been used as traditional medicines by the community for generations, such as Avicennia alba, Bruguiera gymnorriza, Ceriops decandra, Rhizophora apiculate, Rhizophora mucronate, Rhizophora stylosa, and Sonneratia casseolaris, which has been used as a medicine containing phytochemical compounds such as alkaloids, saponins, terpenoids, flavonoids, and phenols. The parts used in traditional medicine are the fruit, leaves, and sap. The ways to use it include hypertension, hepatitis, asthma, flatulence, recovering energy after giving birth, mouth sores, malaria, dysentery, ulcers, cholera, sore eyes, itching, internal injuries, boils, healing burns, and bruises

Analisis Kelayakan USAha Agroindustri Tempe

Penelitian ini bertujuan untuk mengetahui: (1) besarnya biaya, penerimaan, dan pendapatan agroindustri tempe di Desa Pawindan Kecamatan Ciamis Kabupaten Ciamis; (2) kelayakan USAha agroindustri tempe di Desa Pawindan Kecamatan Ciamis Kabupaten Ciamis. Penelitian dilaksanakan di Desa Pawindan Kecamatan Ciamis Kabupaten Ciamis dengan menggunakan metode survai. Sampel lokasi ditentukan secara sengaja (purposive) dengan pertimbangan bahwa Desa Pawindan merupakan sentra agroindustri tempe di Kecamatan Ciamis. Teknik penarikan responden dilakukan secara sensus. Hasil penelitian menunjukkan bahwa: Rata-rata biaya total sebesar Rp 1.274.208,90, yang dihasilkan dari penjumlahan biaya tetap rata-rata sebesar Rp 17.427,24, dengan biaya variable rata-rata sebesar Rp 1.256.781,70. Pendapatan rata-rata yang diperoleh sebesar Rp 644.791,09, dari penerimaan rata-rata sebesar Rp 1.919.000,00,- dikurangi biaya total rata-rata sebesar Rp 1.274.208,90. Analisis Kelayakan yang digunakan yaitu analisis kelayakan USAha yang membandingkan antara penerimaan dan biaya total. Rata-rata penerimaan yang diperoleh sebesar Rp 1.919.000,00,- dan biaya total rata-rata yang dikeluarkan sebesar Rp 1.274.208,90. Dengan demikian diperoleh R/C sebesar 1,50 artinya berarti bahwa USAha agroindustri tempe layak untuk dijalankan

Plasma splashing from Al and Cu materials induced by and Nd : YAG pulsed laser

Plasma splashing from Al and Cu target materials and the growth of thin films on Cu and Al, respectively, has been studied using a Q-switched Nd:YAG laser with a 1064-nm, 80-mJ, 8-ns pulse width as the source of ablation. The target kept rotating and the substrate, Cu for Al and vice versa, was placed at an angle of 15° with respect to the beam axis. During the laser-matter interaction, the targets absorbed thermal energy within the thermal region depth of 4.7 (1.1) nm, yielding an ablated skin depth of 6.7 (4.2) nm. The surface morphology of the exposed targets was studied by analyzing SEM micrographs obtained using a ZEISS SUPRA 35 VP. The obtained results are explained on the basis of different sputtering/ablation mechanisms. Comparatively severe damage forming a bigger crater is seen on the Al target surface in contrast to the crater on the Cu surface. This observation is correlated with the blustering effect and/or debris formation. Energy dispersive spectroscopy (EDX) of the substrates yielded the deposition of micrometric grain-size particle