Judul: Pengendalian aliran permukaan dengan modifikasi sistem microcatchment pada pertanian lahan kering berlereng
Abstrak: Increase in population has led to the increased in demand for farm land. Erotion is one important factor causing land degradation in sloping upland agriculture. Microcatchment is one of water harvesting technology develooped in arid regions.
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Judul: Analisis kelayakan finansial penerapan modifikasi sistem microcatchment pada usahatani lahan kering
Abstrak: Air hujan merupakan satu-satunya sumber air yang sangat diperlukan pada pertanian lahan kering. Air hujan pada lahan kering yang tidak terkontrol akan menimbulkan masalah degradasi lahan karena tingginya tingkat erosi dan aliran permukaan. Untuk itu perlu adanya teknologi tepat guna yang secara efektif mampu meresapkan dan menyimpan air hujan sebagai surnber air sekaligus mencegah terjadinya degradasi lahan yang diakibatkan oleh jatuhnya air hujan. Salah satu teknologi yang diharapkan mampu memanfaatkan air hujan dan mengendalikan aliran permukaan adalah sistem microcatchment. Microcatchment dapat dibatasi dengan membuat saluran dan guludan, serta dapat dimodifikasi dengan pemberian mulsa vertikal untuk lebih mengefektiflcan jumlah aliran permukaan yang tertampung dan diresapkan. Setiap penerapan teknologi termasuk modifikasi sistem microcatchment memerlukan pengujian secara finansial untuk menentukan layak tidaknya teknologi tersebut diterapkan.
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Judul: Pengukuran Jantung Kelinci New Zealand White (Oryctolagus cuniculus) dengan Radiografi Toraks
Abstrak: This research was conducted to evaluate radiographs heart size of anaesthetized New Zealand White rabbits (Oryctolagus cuniculus) under different combination of ketamine and xylazine. The rabbits were divided into three groups. Group A were anaesthetized using a 35 mg/kg and 5 mg/kg combination of ketamine and xylazine (n=5). Group B were anaesthetized using a 40 mg/kg and 5 mg/kg combination of ketamine and xylazine (n=3) while group C were anaesthetized using 45 mg/kg and 5 mg/kg combination of ketamine and xylazine (n=3). Parameter of observation from left laterolateral view were: 1) the apicobasilar length of the heart (AB), 2) the width of the heart (CD), 3) the distance between the cranial edge of the fifth rib and the caudal edge of the seventh rib perpendicular to the spine (R5-7), and 4) the vertical depth of the toraks (H). Parameter of observation from dorsoventral view were: 1) the length of the heart (L), 2) the width of the heart (W), and 3) the width of the thorax (T). The result from the heart parameters observation that were measured in left laterolateral view and dorsoventral view shows theres no significantly differ among the groups (P > 0.05). The vertebrae heart size (VHS) values obtained from the sum of the length of the long and the short axes on left laterolateral view. The long axes mean values (A) were 4.35±0.26 v and the short axes mean values (B) were 3.59±0.30 v, therefore VHS mean values were 7.94±0.49 v. On the dorsoventral view, the length of the heart mean values (L) were 4.32±0.29 cm, the width of the heart mean values (W) were 3.33±0.26 cm, and the width of the thorax mean values (T) were 5.85±0.30 cm. In normal conditions, the width of the heart should be less than two-thirds the width of the thorax and values obtained of 3.33<3.72 it shows that the heart is in the normal range. The best ratio to calculated the normal heart dimension in the left laterolateral view was compared the long axes with the vertical depth of the thorax, whereas in dorsoventral view, the length of the heart was compared with the width of the heart.
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