Judul: Teknik Pengambilan dan Interpretasi Radiografi pada Kaki Belakang Badak Sumatera di Suaka Rhino Sumatera (SRS).
Abstrak: Penelitian ini bertujuan mengetahui teknik pengambilan dan interpretasi radiografi pada kaki belakang badak sumatera di Suaka Rhino Sumatera (SRS). Pengambilan radiografi dilakukan pada badak sumatera dengan kesadaran penuh. Orientasi daerah pengambilan dilakukan di distal tarsal dengan proyeksi dorsoplantar, plantarodorsal dan lateromedial. Paparan yang digunakan berkisar antara 1,2-1,6 miliampere second (mAs), 86-88 kilovotage peak (kVp) dan jarak focal film distance (FFD) sejauh 70-80 cm. Pengukuran panjang tulang dan ketebalan jaringan dilakukan menggunakan aplikasi image J. Proyeksi paling baik untuk ossa phalanges menggunakan dorsoplantar, ossa metatarsalia menggunakan lateromedial dan plantarodorsal, serta ossa tarsi menggunakan lateromedial. Radiografi normal kaki belakang badak sumatera terdiri dari ossa tarsi, ossa metatarsalia dan ossa digitorum pedis. Ossa tarsi terdiri dari os tarsi centrale, os tarsale I, II, III, dan IV dengan panjang berkisar dari 1 – 4,53 cm. Ossa metatarsalia terdiri dari os metatarsal II, III, dan IV dengan panjang berkisar dari 12,96 – 14,42 cm. Ossa digitorum pedis terdiri tiga phalanx yang tersusun dari os phalanx proximal, medial, dan distal dengan panjang berkisar dari 1,33 – 4,58 cm. Ketebalan jaringan regio ossa tarsi-metatarsi berkisar antara 0,6 – 5,28 cm. Ketebalan jaringan dan proyeksi radiografi menentukan kualitas radiografi, sedangkan keberhasilan pengambilan radiografi kaki belakang badak sumatera ditentukan oleh kemampuan melatih badak sumatera.
Keyword: badak sumatera, interpretasi radiografi, kaki belakang, teknik radiografi

Judul: Karakteristik anatomi skelet kaki belakang Badak Jawa (Rhinoceros sondaicus)
Abstrak: Javan rhinoceros (Rhinoceros sondaicus) is one of the rarest mammals which can be found only in Ujung Kulon National Park (UKNP), Banten Province, Indonesia. Behavioural study on this animal could be learned by studying their anatomy structure. The aim of this study was to learn about the characteristics of the javan rhino’s hind limb skeletal anatomy and was compared with the sumatran rhino’s hind limb skeleton. This study used a set of javan rhino’s hind limb skeleton which was brought from UKNP. The observation was done by measuring the skeleton, inspecting the structures and relating it to its behaviour, then capturing pictures of the skeleton. The elements of javan rhino’s skeleton were named based on Nomina Anatomica Veterinaria 2012. Generally, a javan rhino’s hind limb skeleton’s structure was relatively similar to a sumatran rhino. But, there are several differences in the structure that is assumed to be related to the difference in body size between those two species. The differences found were the wideness of ala ossis ilii. Furthermore, the trochanter major and trochanter tertius were more developed. An indentation (deep sulcus) was also found on dorsal side of os talus.
Keyword: Bogor Agricultural University (IPB), anatomy skeleton., javan rhino, hind limb

Judul: Bifurkasi Hopf pada Model Siklus Bisnis Kaldor Kalecki tanpa dan dengan Waktu Tunda
Abstrak: Business cycle model is one of dynamical system models in economic. One of the business cycles model is Kaldor-Kalecki model. Kaldor-Kalecki business cycle model that is written in delayed defferential equations, is a business cycle model that involves gross product and capital stock of a company. In this paper Kaldor-Kalecki business cycle model is analyzed using both nondelay and delay in time of capital stock. By Taylor expansion for the time delayed model, an analysis of stability around the fixed points has been done. Furthermore, by using Hopf bifurcation theorem, it can be shown that there exists periodic orbits and limit cycle. In the nondelayed model, changing the parameter of goods market could lead to the occurrence of Hopf bifurcation and the existence of limit cycle. Similarly, for the delayed model, it has been shown that changing the time delay parameter may result in the occurrence of Hopf bifurcation and limit cycle.
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