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Yeni Widyawati
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Agriculture, Biological Sciences & Forestry Humanities

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Efek Senyawa Saponin pada Sapindus rarak dengan Pakan Berbasis Jerami Padi dalam Mitigasi Gas Metana Nanang Krisnawan; Asep Sudarman; Anuraga Jayanegara; Yeni Widyawati
Jurnal Ilmu Pertanian Indonesia Vol. 20 No. 3 (2015): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (704.937 KB) | DOI: 10.18343/jipi.20.3.242

Abstract

The objective of the research was to study saponin in Sapindus rarak were added to the diet of rice straw ammoniation (20 & 40%), related to the effect in reducing methane emissions of ruminants and pattern of rumen fermentation were tested by in vitro. Completly randomized block design with four treatments and four replications was used. Variables measured were gas production total, methane production, dray matter digestibility (DMD), N-ammonia, VFA total, VFA partial, and population of protozoa. The results showed that the addition saponins in S. rarak as a source of rice straw ammoniation significant effect (P<0.05) of the total gas production, methane production, dray matter digestibility (DMD), N-ammonia, VFA partial, and population of protozoa. S. rarak use as a source of saponins with a dose of 20% on rice straw ammoniation was able to reduce methane gas production drop in gas production total, concentration of N-ammonia, and  protozoa population.
PENGARUH MOTIVASI BERSAING DAN DISIPLIN BELAJAR TERHADAP PRESTASI SISWA “MTS AL-HIDAYAH DONOWARIH KARANGPLOSO MALANG yeni Widyawati
PSIKOVIDYA Vol 16 No 2 (2012)
Publisher : Fakultas Psikologi Universitas Wisnuwardhana Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2517.348 KB)

Abstract

MTs Al-Hidayah Karangploso Malang adalah sekolah swasta yang dikelola oleh yayasan pendidikan Islam. Sekolah ini memiliki konsentrasi ilmu yang berhubunggan dengan ilmu-ilmu agama Islam. Penelitian bertujuan untuk mengetahui adanya penggaruh motivasi bersaing dan disiplin belajar terhadap prestasi belajar siswa MTs Al-Hidayah Donowarih Karangploso-Malang, populasi yang digunakan berjumlah 50 siswa. Analisis data menggunakan rumus analisis regresi dua prediktor. Uji validitas menggunakan teknik simple random sampling. Uji Reliabilitas menggunakan program uji keandalan Teknik Hoyt. Metode pengumpulan data yang digunakan adalah metode skala dan dokumentasi. Hasil analisis data diperoleh Freg=56,449 dengan p=0,000. Hipotesis yang berbunyi ada pengaruh motivasi bersaing dan disiplin belajar terhadap perstasi belajar siswa diterima (Hi), pada taraf 99%, karena variabel X memiliki hubungan yang sangat signifikan terhadap variabel Y. Hasil koefisien determinan diperoleh hasil R²=0,706 artinya variabel motivasi bersaing dan disiplin belajar sebesar 69,5%.
Co-Authors Anuraga Jayanegara Asep Sudarman Nanang Krisnawan