Judul: Pendugaan Lama Proses Perlakuan Panas pada Mangga Gedong Gincu menggunakan Metode Finite Difference
Abstrak: One of the quarantine regulations for the fruit export, the fruit must be free from pests and diseases especially fruit fly that often result in loss. Heat Treatment is one of the post harvest technicque that can be used for quarantine, heat treatment has a three methods Hot Air Treatment (HAT), Hot Water Treatment (HWT) and Vapor Heat Treatment (VHT). Objective of this study is to estimate time process of heat treatment. Vapor heat treatment applied to gedong gincu mango with various size, small size (diameter 69.75 mm), medium size (diameter 70.35 mm) and large size (diameter 81.05 mm) to reach center of the fruit temperature 46.0 °C and the medium temperature 47.0 °C. Process of heat treatment on mango small size takes 40.6 minutes from estimation results while the measurements 39.3 minutes, for medium size mango estimation results 45.7 minutes and 50 minutes from the measurement results. And the large size mango takes 54.1 minutes for the estimation results and 52.7 minutes from the measurements to reach 46.0 °C at the center of the fruit
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Judul: Disinfestasi telur dan larva lalat buah pada buah mangga gedong gincu (Mangifera indica) dengan teknik perlakuan uap panas
Abstrak: The presence of fruitfly belongs to genus Bactrocera is the main problem of Indonesia’s program to export fresh mango. Subsequently, vapor heat treatment as one among suitable quarantine treatment methods had been developed to disinfest fruitfly in mango. This research was conducted with certain objectives such as: to observe thermotolerance of fruitfly against high temperature, to evaluate effect of treatment to the gedong gincu mango quality, and to determine the most effective level of vapor heat treatment that can be used to disinfest B. carambolae at laboratory scale. According to hot water dipping test, egg was the most tolerant stage, either on B. carambolae or B. papayae. In addition, eggs and larvae of B. papayae were more tolerant than those of B. carambolae at 46oC. While, increased temperatur comparison test show that mortality rate of B. carambolae larvae reach 100% after 20 minutes at 44ºC to 48ºC. On the other hand, all larvae were killed after 5 minutes treatment at 48ºC. There were no significant differences between treated and untreated gedong gincu mango in term of firmness, weight loss, peel color, sugar content and taste until 5 days after treatment at 45oC to 49oC. In laboratory scale, mortality of B. carambolae reach 100% at 46.5oC vapor heat on various holding time. This result show that vapor heat treatment at 46.5oC effectively killed eggs and larvae of B. carambolae. However, reducing the temperature might be effective if exposure time is prolonged. In the future, it is recommended to conduct large scale test for vapor heat treatment at 46.5o Keywords : fruitfly, gedong gincu mango, vapor heat treatment C as confirmatory test.
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Judul: Kohesi Sosial dan Resiliensi Komunitas terhadap Bencana Tsunami
Abstrak: Bencana Tsunami mengancam keberfungsian komunitas karena bencana tersebut selain mengakibat korban jiwa juga menghilangkan sumber nafkah warga komunitas. Tujuan penelitian ini adalah menganalisis kohesi sosial komunitas, menganalisis resiliensi komunitas menghadapi bencana Tsunami, dan menganalisis peran kohesi sosial terhadap resiliensi komunitas. Metode yang digunakan adalah metode survei dengan menggunakan pendekatan kuantitatif didukung data kualitatif. Pemilihan responden dilakukan menggunakan teknik simple random sampling dengan jumlah responden sebanyak 50 orang dan pemilihan informan dilakukan secara sengaja. Hasil penelitian ini mengungkapkan bahwa komunitas belum sepenuhnya bangkit kembali setelah bencana Tsunami walaupun kohesi sosialnya tinggi karena masih bergantung pada bantuan dari pihak luar, termasuk pemerintah. Aksi kolektif komunitas masih tergolong rendah karena kondisi warga komunitas yang terpencar dan pemimpin komunitas yang ada belum mampu memfungsikan kepemimpinannya. Segala sesuatu masih dalam koordinasi pihak luar, termasuk pemerintah. Selain itu, bencana Tsunami yang memiliki dampak besar dan datang secara tiba-tiba membuat komunitas tidak memiliki kesiapsiagaan dalam menghadi bencana tersebut.
Keyword: aksi kolektif, kohesi sosial, resiliensi komunitas, Tsunami