Judul: Insecticidal activity of rocaglamide and immunity inhibition of Crocidolomia pavovana (F.) to Eriborus argenteopilosus (Cameron)., Aktivitas insektisida rokaglamida dan penghambatan respons imunitas larva Crocidolomia pavonana (F.) terhadap parasitoid Eriborus argenteopilosus (Cameron)
Abstrak: Rmglmide, the principal active constituent: of Agiaia &rat& (Meliame) e x w s showed strung activity against some insect species. RacagImide and its derivatives were re@ to inhibit growth, prolifcmtion of as well as cytotoxic to certain weer cells. Same n>colglamide derivatives inhibit protein synthesis in cultured cells. Although rocaglrunidc has been tested on some insect pests species, its effects on pest natural enernits d host-pamitoid interaction have never ken reported. Fiefd and Iabmtory studies were canduekd to evaluate the potency of rocaglamide against second instar Ime of Crmidolomia p a w r m and its toxicity to the female adults of fiiborus argentt.opiIosus pmsitoid. The effects of mgfmide on pzuttsitization, defense reaction of C. pmtonana toward E. argenteopilosusus, and its effect an foraging behavior of E. argenteopilosus female were studied, The phytotoxicity of mag1sunide and active fractions of A. odorata twig extract on brocwIi and s o y b was also studied. Field experiment was conducted to evduab wmpatibiiity of A, odoruta extmct and E argenteopilostcs to suppress population of C, pwonann. Leaf-midual bioassay showed that rocaglmide posse& strong insecticidal activity on samd instar fmae of C. pavamna, with LC% and LGs to the mortality of 2-t-3-M instar larvae were 23.39 ppm and 69.24 ppm, mspectivety. Rwtglmide tmhent at 10-80 ppm h m the &velapent time of C. pauonana h m the second to Efte foud~ instar lame as long as 2.25-3.67 days compared with control. Roc8glamide at the highest concentration (300 ppm) by topical appfication (I ~f/hmtw)a s relatively nontoxic to the. female E. argenfeopiIosus. Rocaglmide at 300 ppm did not influence khavior of adult fmak of E, argen~eopilostcsi n finding host plant, host larvae, and hast itfiandfing. Rocaglmide treatment at cuncentmtions of 14,W (LC=), 23,39 (LCso), and 33,06 ppm fiC70) did not reduce parasitization rate, but could suppress encapsulation rate of pamitoid eggs and larvae. 'The mtment of r0~8ghidere duced btaf tremwyte counts, hemalymph protein content, and altered the profile of hernolymph protein of the fourth instar larvae of C. p a y o m , and this may explain the reduced capacity of C. pcrvonana larvae to mcapsulate the parasitoid eggs and larvae. Rocaglmide at: 300 ppm was not pfryttoxic effect to b m f i and s o y h leaves. On the: wntmy, ethyl acetate fraction from partition with cwnter-cumnt dimibution and dicthomethane, dichlammethane-isopmphanol fractions from vacuum liquid chromatogtapfry at a concentration of 0.42% showed strong phytotuxic on broccoli and s o y h leaves. Field evaluation showed that ap f i d a n of 0.14% and 0.28Y0 A. odorura extract was effective enough to suppress the population of C. puvom Iamae, but did not influence its eggs as well as its parasitoid, E. argenteopilosw. Because of the phytotoxicity of active fractions of A. udorutu extract, the use of this extract in crop pest cunml must be evaluated thoraughly. Resulb of this research show that rocaglmide has potency to increase the probability of parasitoid survival, so that: racaglmide has a gad potentiat ta be combined with biological control by using parasitoid in cabbage pest management
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Judul: Effect of cyantraniliprole insecticide on survival and reproduction of Crocidolomia pavonana (Lepidoptera: Crambidae)
Abstrak: Siantraniliprol merupakan salah satu insektisida berspektrum luas dari golongan 28 diamida yang bekerja dengan mengaktifkan reseptor rianodin pada membran retikulum endoplasma. Salah satu hama sasaran insektisida tersebut adalah Crocidolomia pavonana yang menyerang tanaman Brassicaceae. Penelitian ini bertujuan menguji dan mengamati pengaruh insektisida siantraniliprol terhadap sintasan dan reproduksi C. pavonana. Sintasan merupakan kemampuan suatu organisme dalam mempertahankan hidupnya dalam jangka waktu tertentu. Pengujian pengaruh siantraniliprol terhadap sintasan dan reproduksi C. pavonana dilakukan dengan metode pencelupan daun. Hasil penelitian menunjukkan bahwa mortalitas serangga uji meningkat seiring bertambahnya konsentrasi dan waktu pengamatan. Nilai LC95 pengujian siantraniliprol sebesar 1,048 ppm, yang menunjukkan bahwa konsentrasi tersebut masih efektif untuk mematikan serangga C. pavonana. Siantraniliprol menyebabkan larva mengalami gejala lemas, berhenti makan, lumpuh, dan akhirnya mengalami kematian. Insektisida ini mampu menurunkan kelangsungan hidup setiap fase perkembangan serangga uji pada konsentrasi rendah. Konsentrasi 0,25 ppm memberikan gejala subletal pada larva C. pavonana, yaitu memperkecil ukuran larva instar III serta IV dan memperlambat lama perkembangan hidup larva ke pupa. Siantraniliprol tidak memberikan pengaruh terhadap pertumbuhan serta perkembangan imago, persentase peneluran imago betina, dan tidak dapat digunakan sebagai ovisida., Cyantraniliprole is a broad-spectrum insecticide belonging to the 28-diamide group that works by activating the ryanodine receptor on the endoplasmic reticulum membrane. One of the target pests of the insecticide is Crocidolomia pavonana, an economic pest of Brassicaceae crops. This study aimed to examine and observe the effect of the cyantraniliprole on the survival and reproduction of C. pavonana. Survival is the ability of an organism to survive for a certain period. The cyantraniliprole was tested by using the leaf dipping method. The results showed that the mortality of larvae increased with increasing concentration of insecticide and observation time. The LC95 value of the cyantraniliprole was 1,048 ppm. The larvae exposed to cyantraniliprole showed physical weakness, inability to eat, paralysis, and death. This insecticide was able to reduce the sustainability of life at such low concentrations. The concentration of 0,25 ppm cyantraniliprole gave sublethal symptoms, which reduced the size of larva instar III and IV and slowed the development of larva to pupate. Cyantraniliprole could not be used as an ovicide. It also did not affect the fecundity, growth, and development of C. pavonana moths.
Keyword: Golongan diamida, Metode pencelupan daun, Subletal, Reseptor rianodin

Judul: Konversi Sinyal Analog Menjadi Partitur Menggunakan Algoritme FFT.
Abstrak: Partitur merupakan media dokumentasi musik atau lagu yang telah lama digunakan musisi. Saat ini banyak musisi yang tidak bisa membaca atau menulis partitur. Keberadaan partitur sangat penting untuk membantu musisi dalam mendokumentasikan karyanya dan sebagai alat bantu ketika memainkan karyanya. Adanya aplikasi untuk konversi rekaman menjadi partitur secara otomatis akan memudahkan musisi terutama pemain gitar dalam mendokumentasikan karyanya. Selain itu, hal tersebut juga dapat membantu musisi untuk bisa memahami cara membaca dan menggunakan partitur. Pengembangan aplikasi ini, menggunakan algoritme fast Fourier transform (FFT) untuk mengenali nada dan mengestimasi durasi kemunculan dan panjang nada. Akurasi pada penelitian ini diperoleh sebesar 100% untuk pengenalan nada dan panjang nada.
Keyword: fast fourier transform (FFT), gitar, nada, partitur