Judul: Perilaku Harian dan Pengelolaan Burung Elang Brontok (Nisaetus cirrhatus) di Pusat Konservasi Elang Kamojang Jawa Barat
Abstrak: Elang brontok (Nisaetus cirrhatus) merupakan burung pemangsa (predator) yang saat ini mengalami penurunan jumlah spesies di alam. Salah satu upaya untuk menjaga kelestarian populasinya adalah dengan cara konservasi in-situ dan rehabilitasi. Tujuan penelitian ini adalah untuk mengetahui perilaku harian, pengelolaan burung di Pusat Konservasi Elang Kamojang, serta menganalisis kriteria perilaku untuk kesiapan sebelum dilepasliarkan. Penelitian dilakukan pada bulan Februari sampai bulan Maret 2021 di Pusat Konservasi Elang Kamojang Jawa Barat. Pengamatan perilaku harian menggunakan metode Focal Animal Sampling, dan pengelolaan menggunakan metode wawancara, studi literatur, dan observasi. Perilaku harian Elang brontok (Nisaetus cirrhatus) di Pusat Konservasi Elang Kamojang yaitu perilaku diam (58,61%) yang meliputi aktivitas berdiri santai, melihat ke kiri dan ke kanan, menggeliat; perilaku bergerak (18,95%) meliputi menelisik, bersuara, membersihkan badan sambil menggetarkan tubuh, menggerakan ekor, berpindah, meluncur, dan terbang; perilaku makan (ingestif) (22,44%) meliputi aktivitas makan dan defekasi. Kegiatan pengelolaan meliputi kegiatan pengelolaan kandang, pengelolaan pakan, dan pengelolaan kesehatan., Changeable Hawk Eagle (Nisaetus cirrhatus) is a bird of prey (predator) that is currently experiencing a decline in the number of species in nature. One of the efforts to preserve the population is employing in-situ conservation and rehabilitation. The purpose of this study was to determine the daily behavior, management of birds at the Kamojang Eagle Conservation Center, and to analyze behavioral criteria for readiness before being released into the wild. The research was conducted from February to March 2021 at the Kamojang Eagle Conservation Center, West Java. Observation of daily behavior using Focal Animal Sampling method, and management using interviews, literature study, and observation. The daily behavior of Changeable Hawk Eagle (Nisaetus cirrhatus) at the Kamojang Eagle Conservation Center is silent behavior (58.61%) which includes activities of standing relaxed, looking left and right, squirming; moving behavior (18.95%) includes searching, making sounds, cleaning the body while shaking the body, moving the tail, moving, gliding, and flying; eating behavior (ingestive) (22.44%) includes eating and defecation activities. Management activities include cage management, feed management, and health management.
Keyword: behavior, eagle, management, predator, rehabilitation

Judul: Study on the Correlation between Daily Behavior and Bioacoustics in the Javan Hawk-Eagle (Nisaetus bartelsi) at Taman Safari Indonesia, Cisarua, Bogor
Abstrak: Elang jawa (Nisaetus bartelsi) adalah spesies burung pemangsa endemis yang ditemukan di Pulau Jawa, Indonesia, dan populasi mereka semakin terancam punah. Potensi penelitian pada elang jawa mencakup etologi dan bioakustik. Penelitian ini bertujuan menganalisis perilaku dan suara yang dihasilkan oleh elang jawa, serta mengidentifikasi parameter yang menandai setiap perilaku tersebut. Penelitian ini menggunakan metode pengamatan perilaku ad libitum sampling. Penelitian ini dilakukan selama 15 hari dengan total waktu pengamatan selama 103.5 jam. Objek penelitian ini berupa sepasang elang jawa dari Taman Safari Indonesia. Data perilaku ditentukan dengan proporsi kategori perilaku yang ditunjukkan dalam bentuk diagram pie dan garis. Sampel suara dianalisis dengan menggunakan perangkat lunak Audacity® dan Raven Pro 1.6®. Hasil penelitian menunjukkan aktivitas jantan yang lebih tinggi. Tujuh jenis perilaku teridentifikasi: basking (♂ 3.4%, ♀ 4.1%), preening (♂ 3.7%, ♀ 6%), terbang (♂ 76.4%, ♀ 64.7%), makan (♂ 5.4%, ♀ 6.6%), mating (♂ 5.4%, ♀ 9.6%), interaksi (♂ 5.1%, ♀ 9%), dan mandi (♂ 0.6%, ♀ 0%). Vokalisasi meliputi high-pitched call, alarm call, mating call, dan trill, dengan frekuensi panggilan tertinggi tercatat dari burung elang betina. High-pitched call, alarm call, dan trill sering tercatat pada saat burung mendarat atau bertengger.
Keyword: elang jawa, vokalisasi, perilaku, basking

Judul: Photovoltaic Effect In A CdS/P3HT-Chitosan Junction
Abstrak: A CdS/Polymer junction has been fabricated and it’s photovoltaic effect has been studied. The polymer is a blend of poly-3hexyltiophene (P3HT), chitosan and polyethileneglicol (PEG). Boron in situ doping of CdS using Chemical Bath Deposition (CBD) was investigated. The effect of B-doping and annealing on optical properties as well as on electrical and morphology of CdS film were studied. The structure and morphology of the film were detected by XRay Diffraction (XRD) and Scanning Electron Microscopy (SEM). The polymer film was sandwiched between the CdS semiconductor and an ITO glass to form an ITO/CdS/Polymer/ITO photovoltaic cell. Time constant (τ) and open circuit voltage (Voc) were investigated by using voltage censor. The bandgap of films were determined using absorbance edge method. The results of annealing optical bandgap of undoped CdS shifted from 2,49 eV down to 2,39 eV. Phase transition of CdS due to annealing temperature and induced lattice damage due to doping. The room temperature conductivity of polymer is 3,8 – 6,6 x 10-7 S/cm as function of frequency between 100 – 5000 Hz. The Voc of the fabricated cells ranges between 107 – 286 mV and time constant ranges between 2,5 to 43,75 s.
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