Judul: Bioakumulasi Rodamina B dalam Serat Sutra Samia cynthia ricini
Abstrak: Samia cynthia ricini silk fiber is easily cultivated in Indonesia. The method of dyeing silk fiber must be environmentally friendly, such as the method of bioaccumulation of dyes. This method has never been used on S. ricini silkworms. This study aims to identify the effect of rhodamine B on the characteristics of silk fiber and the productivity of S. ricini silkworm cultivation. Rhodamine B is used because it has a positive partition coefficient, is amphiphilic, and has a high lipophilicity. In this method, fifth instar S. ricini silkworm larvae were fed modified feed with rhodamine B at a concentration of 0–0.5% w/w. The addition of rhodamine B to the feed produced pink (λmax= 546 nm) and orange luminescence (λmax= 568 nm) cocoons and rhodamine B was distributed in the silk glands of the S. ricini silkworm. Silk fiber modified with rhodamine B has a tensile strength of 557 ± 66 MPa and an elongation of 19.18 ± 3.96%, fiber morphology with a diameter of 20.51 ± 1.60 µm, and an unchanged FTIR spectrum. The mortality of S. ricini modified rhodamine B silkworm larvae was 0–5.82% and the cocoon weight ranged from 1.21–2.02 g. These results indicate bioaccumulation of S. ricini silk fiber bioaccumulation does not affect fiber characteristics and cultivation productivity.
Keyword: staining, rhodamine B, Samia cynthia ricini

Judul: Productivity of Eri Silkworm (Samia cynthia ricini) of White  Plain and Blue Plain Colour of Larvae
Abstrak: Industri tekstil merupakan salah satu komoditas unggul di Indonesia yang memanfaatkan serat ulat sutra sebagai bahan baku tekstil. Samia cynthia ricini mampu berkembang biak lebih dari dua generasi dalam satu tahun (multivoltine). Faktor yang dapat memengaruhi produktivitas ulat sutra, antara lain kondisi lingkungan, kecukupan nutrisi, genetik, dan manajemen pemeliharaan. Tujuan penelitian ini adalah menganalisis produktivitas ulat sutra eri (S. ricini) pada warna larva putih polos dan biru polos. Penelitian ini menggunakan larva S. ricini berwarna putih polos dan biru polos. Parameter yang diamati antara lain suhu dan kelembapan, konsumsi pakan, panjang, lebar, dan bobot tubuh larva, lama tiap fase instar, mortalitas per instar, karakterisasi kokon, kualitas serat sutra, dan pewarisan pola warna larva. Data yang diperoleh dianalisis menggunakan uji-T. Hasil penelitian menunjukkan morfometrik tubuh larva pada warna biru polos lebih tinggi dibandingkan warna putih polos. S. ricini warna biru polos memiliki gen yang lebih dominan, sehingga mewariskan dua pola warna, yaitu 83% putih polos dan 17% biru polos., The textile industry is one of the superior commodities in Indonesia that uses silkworm fiber as a textile raw material. Samia cynthia ricini is able to breed more than two generations in one year (multivoltine). Factors that can affect silkworm productivity are environmental conditions, nutritional adequacy, genetics, and rear management. The purpose of this research is to analyzed the productivity of eri silkworms (S. ricini) of white plain and blue plain colour of larvae. This research used S. ricini larvae of white plain and blue plain. The observed parameters include temperature and humidity, feed consumption, length, width, and body weight of larvae, length of each instars phase, mortality per instars, quality of cocoon, quality of silk fibre, and inheritance of larvae colour. The data were analyzed using the T test. The result showed that the morphometric of blue plain was higher than white plain. Blue plain of S. ricini has more dominant gene, thus inheriting two color patterns, with the percentage of 83% for white plain and 17% for blue plain.
Keyword: blue plain, colour of larvae, productivity, Samia cynthia ricini, white plain

Judul: Perencanaan Lanskap Jalan Western By Pass di Kotamadya Denpasar, Bali
Abstrak: Jalan Western By Pass dengan panjang keseluruhan .t 13 km merupakan salah satu jalan yang akan dibangun di wilayah Denpasar bagian barat, digunakan untuk menghubungkan daerah-daerah di sebelah utara (Tabanan, Kintamani, Sangeh, dll) dan selatan Denpasar (Kuta dan Nusa Dua). Jalan yang berfungsi sebagai jalan Arteri Primer ini bersama-sama dengan Northern dan Southern By Pass akan membentuk jaringan Outer Ring Road yang mengelilingi Kotamadya Denpasar dan direncanakan selesai serta mulai beroperasi secara optimal pada tahun 2002.
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