Judul: Kriteria Kematangan Pascapanen Pisang Raja Bulu dan Pisang Kepok
Abstrak: Bananas are one of the leading fruit nation wide. Bananas are divided into 2 types based on the consumption. First, type the consumption of fresh bananas with banana varieties Raja Bulu samples and second type of processed plantain bananas with banana varieties Kepok samples. The purpose of this research is to study maturity indices studied post-harvest Raja Bulu banana and Kepok banana of some age picking fruit and determining the best harvesting time for postharvest handling. Observations that have been made show that the greater the picking age negatively correlated with the length of shelf life. At maturity level 5 color scale, picking bananas indicates different maturation process. At Raja Bulu Banana and Kepok Banana, apparent influence of shelf life observations, the percentage weight loss, percentage of edible parts, content of total tertitration acid, and content of vitamin C. Based on the results of the statistical analysis, the best harvest for post harvest handling in order to extend the shelf life on Raja Bulu Banana is 95 days, while for Kepok Banana is 110 days.
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Judul: Postharvest Maturity Criteria of Uli Banana (Musa  sp. AA Group) at Several Harvesting Ages
Abstrak: Buah pisang merupakan buah yang dapat dipanen sepanjang tahun tanpa dipengaruhi oleh musim, jenis tanaman pisang sangat beragam dan beberapa diantaranya tumbuh dan dibudidayakan di kebun atau di pekarangan rumah, salah satunya adalah pisang Uli. Penelitian ini bertujuan mempelajari kriteria kematangan pascapanen pisang Uli dari beberapa umur panen dan menentukan waktu panen terbaik berdasarkan satuan panas yang diperoleh. Percobaan dilaksanakan di Kebun Percobaan Sukamantri dengan rancangan kelompok lengkap teracak faktor tunggal dengan 5 umur panen pisang. Pengamatan dilaksanakan di Laboratorium Pascapanen, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Buah pisang Uli dapat dipanen pada 90 hari setelah antesis (HSA) pada akumulasi satuan panas 1179 °C hari dengan umur simpan mencapai 13 hari setelah panen (HSP). Buah dengan umur panen lebih muda menghasilkan tingkat kematangan lebih lama dibandingkan buah yang dipanen lebih tua. Umur panen tidak memberikan pengaruh terhadap sifat fisik dan sifat kimia buah pada kematangan yang sama., Banana is a fruit that can be harvested throughout the year without being influenced by the season, the types of banana plants are very diverse and some of them grow and are cultivated in gardens or in the yards, one of which is Uli banana. This research aims to study the post harvest maturity criteria for Uli bananas from several harvest ages and determine the best harvest time based on the heat units obtained. The experiment was carried out at the Sukamantri Experimental Station with a single factor randomized complete group design with 5 banana harvest ages. Observations were carried out at the Postharvest Laboratory, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural Institute. Uli banana fruit can be harvested at 90 days after anthesis (DAA) at an accumulated heat unit of 1179 °C days with a shelf life of up to 13 days after harvest (DAH). Fruit with a younger harvest yields a longer maturity than fruit harvested at an older age. Harvest age has no influence on the physical and chemical properties of fruit at the same maturity.
Keyword: laju respirasi, umur simpan, skala warna

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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