Judul: Rancangan alat perata aliran udara pada withering trough untuk mendapatkan hasil pelayuan yang optimal
Abstrak: Teh hitam merupakan salah satu komoditas hasil pertanian dari sub sektor perkebunan yang menjadi komoditas ekspor non migas. Pengolahan teh hitam dibedakan menjadi dua sistem yaitu sistem orthodox dan sistem baru. Sistem orthodox dibedakan lagi menjadi dua yaitu orthodox murni dan orthodox rotorvane. Sedangkan sistem baru meliputi CTC, LTP dan lain-lain. Pengolahan teh hitam yang ada di PTPN VIII Goalpara menggunakan sistem orthodox rotorvane. Tahapan pengolahan teh hitam yang ada di Goalpara yaitu pelayuan, penggilingan, reaksi oksidasi enzimatis, pengeringan, sortasi kering dan pengepakan. Proses pelayuan merupakan titik awal penentuan mutu ketika pucuk diolah di pabrik pengolahan. Alat yang digunakan pada proses ini yaitu withering trough (WT). Tujuan yang diharapakan pada proses pelayuan adalah mendapatkan hasil pelayuan yang optimal. Standar yang ada untuk hasil dari proses pelayuan yaitu tingkat kadar air antara 49-58% dan kerataan layuan di atas 87%. Ada beberapa faktor yang mempengaruhi proses pelayuan antara lain yaitu suhu, kelembaban udara dan banyaknya udara yang menembus pucuk yang akan dilayukan. Dalam proses pelayuan ditemukan bebrapa masalah yaitu tidak meratanya hasil pelayuan.
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Judul: Analisis efisiensi alat pelayu teh "withering trough" pada pengolahan teh hitam sistem CTC di PT Teh Nusamba Tasikmalaya
Abstrak: Pelayuan teh merupakan tahapan pertama mata rantai proses pengolahan teh hitam. Pelayuan memerlukan biaya investasi dan biaya operasional sangat besar (sebagian besar di~lokasikan peda konsumsi energi.)
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Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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