Judul: Uji Performa Mesin Inkubator Prototipe dan Performa Penetasannya pada Telur Ulat Sutera Bombyx mori L.
Abstrak: Hatchability of silkworm Bombyx mori L. eggs is greatly influenced by environmental factors (temperature and humidity). Micro climatic factors can be controlled through the use of incubator machine with automatic temperature and humidity setting. This study aimed to design, built and test the performance ofthe incubator machine prototype in temperature and humidity control. Another aim was to compare the performance of B. mori L. eggs hatchability (hatchability and hatching time) between hatching room (temperature and humidity are not controlled) and incubator machine (temperature and humidity are controlled). This incubator machine was able to maintain temperature stability CV 0.21% and ave. error 0.035 °C, but its heat exhaust system and humidity stability (CV5.59% and ave. error 7.2%) need to be refined. The eggs hatchability in incubator machine was not significantly different from hatching room (ave. 95.56%) and met the commercial standard. However hatching time in the incubator machine was more uniform (90% at day 10) compared to hatching room (55.54% at day 9). The use of this incubator machine prototype is worth considering in the B. mori hatching management due to efficient use of manpower and equipments as well as facilitate hakitate
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Judul: The Growth of Silkworm ( Bombyx mori L. ) New Hybrid and Commersial's Type
Abstrak: Silkworm larvae has a silk gland that produces silk threads. Silk thread quality is obtained from a qualified cocoon. Clean cocoons with no stains and have a strong fiber will havea high value. To attain qualified cocoons then the larvae feed consumption must be taken into account. The feed consumed will affect the growth performances such as body weight and body weight gain which are the most decisive indicator of the quality of cocoon. This study aimed to evaluate the growth of new hybridobtained from reciprocal cross breeding system and commercial type. The Completely Randomized Design was used as the experimental design with six hybrids as the treatment, i.e. H1 (Mainland China rase 808♂ X Japan race 108 ♀), H2 (Mainland China race 903 ♂ X Japan race 806 ♀), H3(Japan race 903 ♀ X Mainland China race 806 ♂), H4 (Mainland China race 808 ♀ X Japan race 108 ♂), H5 (commercial silkworm C301), and H6 (commercial silkworm BS09). The data taken from 30 larvae hybrid each were analyzed by ANOVA (95%) and then by Tukey test. The results showed that H2 (Mainland China race 903 ♂ X Japan race 806 ♀) was superior hybrid than any hybrid based on the variables of feed consumption, body weight gain, feed conversion, and mortality.
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Judul: Penggunaan data spasial dalam struktur raster sebagai komponen sistem informasi geografi
Abstrak: Penggambaran peta dengan komputer merupakan penggambaran peta secara digital yang dikenal dengan nama pendigitasian. Data digitasi peta merupakan data masukan bagi Sistem Informasi Geografi (SIG). SIG merupakan sistem penanganan, dan pengelolaan data dan informasi geografi. Data yang menjadi bahan baku adalah data spasial atau data yang mengacu pada lokasi geografi. Dalam hal ini data dapat berasal dari peta dan data penginderaan jauh. Selain itu data masukan dapat pula berupa data non- spasial. Data ini dihubungkan dengan suatu atribut dari suatu legenda peta. Atribut dapat dicirikan oleh warna atau simbol yang artinya didefinisikan dalam legenda, sehingga pada SIG, data atribut nonspasial disimpan dalam bentuk yang dapat digunakan untuk analisis data. Struktur data spasial yang dipergunakan pada komputer adalah struktur vektor dan struktur raster. Struktur vektor menggambarkan titik, garis, dan poligon yang di- rangkai oleh koordinat-koordinat. Sedangkan struktur raster menyajikan nilai suatu sel kisi (grid cell) atau pixel yang dicatat dalam bentuk matriks. Masing-masing struktur tersebut dapat dikonversikan, yaitu struktur vektor dikonversikan menjadi struktur raster atau sebaliknya. Dengan demikian tidak ada perbe- daan sewaktu digunakan untuk analisis. ...
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