Judul: Angka Bentuk dan Model Volume Puspa (Schima wallichii (Dc.) Korth) di Hutan Pendidikan Gunung Walat, Sukabumi, Jawa Barat
Abstrak: Volume pohon merupakan salah satu data penting untuk mengetahui manfaat kayu hutan, seperti di Hutan Pendidikan Gunung Walat (HPGW). Model volume Schima wallichii yang dikembangkan pada tahun 1985, perlu diperbaiki karena kondisi tegakan telah berubah dari waktu ke waktu. Oleh karena itu, penelitian ini bertujuan untuk mengetahui angka bentuk yang tepat dan mengembangkan model untuk memperkirakan volume S. wallichii di HPGW. Penelitian ini menggunakan 94 sampel pohon untuk menyusun model volume dan 39 pohon sampel untuk validasi model, yang dipilih secara purpossive mewakili kisaran diameter 10,5-71,8 cm terhadap tegakan S. wallichii. Diameter dari pohon sampel diukur dengan menggunakan Laser Dendrometer, sedangkan tinggi pohon sampel diukur dengan menggunakan Laser Rangefinder. Hasil penelitian ini menegaskan bahwa S. wallichii memiliki angka bentuk buatan 0,71 dan angka bentuk mutlak 0,52, sedangkan model volume yang terbaik bagi spesies ini adalah V=0,000237 D2.32 (R2adj=94,8%). Model volume tersebut dapat digunakan karena menghasilkan nilai dugaan volume pohon S. wallichii yang lebih akurat daripada model volume yang sudah ada.
Keyword: angka bentuk, model volume, Schima wallichii

Judul: Angka bentuk dan model volume Kayu afrika (Maesopsis eminii Engl) di Hutan Pendidikan Gunung Walat, Sukabumi, Jawa Barat^
Abstrak: Some volume models and form factors have been developed for several trees species in Gunung Walat University Forest (GWUF), but no volume model and form factor are available yet for Maesopsis eminii. The objective of this study was to determine form factor and to develop volume model for M. eminii in GWUF. Eighty seven sample trees were used to develop volume models and 37 sample trees were used to validate the volume models, which were purpossively selected from the M. eminii stands with diameters ranging from 5.7 to 73.5 cm. The measurements of sample trees were conducted by using a Laser Criterion (for measuring tree diameter) and Laser Rangefinder (for measuring tree height). The results showed that M. eminii had an absolute form factor of 0.562 and an artificial form factor of 0.699, while the best model for estimating its volume was V = 0.000264D2.35. This volume model provided better precision (with a bias of 0.032) than the use of form factors.
Keyword: Bogor Agricultural University (IPB), Gunung Walat University Forest, volume model, Maesopsis eminii, form factor

Judul: Pengaruh Penambahan Bio Adenosin Tri Phosphat terhadap Profil Kinetik dan Efektivitas Enrofloksasin dalam Mengatasi Coxiella burnetii
Abstrak: Coxiella burnetii belongs to rickettsia group living obligate intracellularly and as the agent of zoonosis Q fever. Enrofloxacine is an antibiotic in quinolon group used to treat infection of C. burnetii in chicken, goat, calve, pig, dog, cat, and horse. From ruminant practical experience, enrofloxacine if be combined with BioATP can enhance the enrofloxacine activity. Research for the effectivity of enrofloxacine and BioATP to treat C. burnetii has never been carried out. Enrofloxacine pharmacokinetic study was carried out by using simental beef as an experimental animals. The effectivity of BioATP supplementation on enrofloxacine activity to treat C. burnetii was tested by using Vero cell tissue culture. The results showed that combination of enrofloxacine and BioATP increased kinetic profile of enrofloxacine in term of onset, duration, pharmacology intensity, and bioavailaibility. Enrofloxacine had activity to treat C. burnetii with value of minimal inhibitory concentration (MIC) at 1-2 ppm and value of minimal bactericidal concentration at 4 ppm. Supplementation of BioATP improved the effectivity of enrofloxacine in treating C. burnetii.
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