Judul: Simulasi Uji BUSS (Baru, Unik, Seragam, dan Stabil) pada Jambu Biji di Kebun Percobaan PKHT, Pasir Kuda, Bogor
Abstrak: This experiment was conducted to study the Distinctness, Uniformness, and Stability (DUS) of guava varieties, so that the data can be used to verify the Test Implementation Guidelines (PPU) in the DUS test. The experiment was conducted at PKHT experiment station, Pasir Kuda, Bogor. This experiment was conducted using a Complete Randomized Design, one factor with incomplete replications, based on UPOV guidelines. The guava varieties evaluated were Sukun Putih, Variegata, Mutiara, Getas Merah, Kristal, Bangkok, Seedless, Super Red and Sukun Merah. The DUS test simulation results showed that 35 of 40 characteristics were different, it consisting of 3 tree characteristic, 12 leaf characteristic, 3 flower characteristic, 15 fruit characteristic, and 2 recommended characteristic, so can be called as distinctness. The result also showed that no varieties with offtype, so can called as uniform and stabile. We conclude that the verification for the PPU of DUS test is appropriate and can be used for condition in Indonesia, with a few addition of new characters that not written in UPOV guidelines. The results of this research can also be useful to determine the variety of the samples.
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Judul: Simulasi Uji BUSS (Baru, Unik, Seragam, Stabil) Enam Varietas Nenas (Ananas comosus L. Merr.)
Abstrak: The objective of this experiment was to elucidate the characters of the distinctness, uniformity and stability of the six varieties of pineapples, as simulation nDUS test important for the Plant Variety Protection Rights application. The experiment was conducted at Pasir Kuda experimental field, Bogor, West Java. The experimental materials consisted of five candidates varieties are Dole 14, P-1972, Mayan Gold 01, Champaka, Pasir Kuda and Subang as reference variety. The result showed that six varieties can be deemed to be dictinct. The distinctness between candidates varieties with reference variety consist of seven characters on the plant, six characters on the leaves, four characters on the flower, nineteen characters on the peduncle and fruit. Six varieties can be deemed to be uniform and stable. Off-type are found only in one plant with two crown Subang variety. The number of off-types are still under uniformity limits standard.
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Judul: Desain Sistem Transfer Energi Nirkabel Berbasiskan Tesla Coil
Abstrak: Tesla coil merupakan alat yang ditemukan oleh Nikola Tesla yang dapat mentransmisikan daya tanpa kabel dengan memanfaatkan prinsip induksi elektromagnetik. Pada penelitian ini dibuat sebuah prototype Tesla Coil dengan menggunakan transistor C1970 dan receiver menggunakan rangkaian LC. Identifikasi alat meliputi pengaruh daya input transmitter terhadap receiver, bentuk signal yang dipancarkan transmitter, pengaruh jarak transmitter dan receiver, nilai efisiensi serta efek alat terhadap perangkat lain. Hasil pengamatan menunjukkan bahwa semakin besar daya input maka semakin besar daya yang dipancarkan oleh transmitter. Bentuk sinyal yang dipancarkan oleh transmitter berupa gelombang listrik AC sinusoidal dengan frekuensi ~2.9 MHz. Semakin jauh jarak receiver terhadap transmitter maka semakin kecil amplitudo gelombang AC yang diterima oleh receiver, menyebabkan semakin kecil daya yang diterima oleh receiver. Adapun nilai efisiensi terbesar penangkapan daya oleh receiver yaitu sebesar 0.00516 % serta terdapat gangguan pada alat-alat tertentu seperti monitor komputer dan radio.
Keyword: rangkaian LC, receiver, tesla coil, transistor C1970, transmitter