Judul: Aplikasi 1-Methylcyclopropene untuk Meningkatkan Vase Life Bunga Potong Zingiber spectabile Griff. Silvana
Abstrak: The freshness of Zingiber spectabile Griff Silvana (bihip) as cut flowers must be maintained by the appropriate post-harvest treatment. One of the post-harvest technologies that is commonly used is the treatment of use chemicals 1-Methylcyclopropene (1-MCP). This study aims to extend the vase life of bihip flowers using 1-MCP, to gain optimum concentration of 1-MCP that can extend the vase life of bihip flowers, and to find the best application technique of 1-MCP for longest vase life of bihip flowers. This study used a completely randomized design (CRD) factorial with two factors. The first factor is the concentration of 1-MCP consists of five levels; 0 ppm (A0), 0.001 ppm (A1), 0.002 ppm (A2), 0.003 ppm (A3), and 0.004 ppm (A4). The second factor is application technique of 1-MCP consists of two levels : sprayed (B1) and soaked (B2). The results showed that 1-MCP can significantly extend the vase life of cut flowers bihip up to 11.30 day compared to control which is only 9.55 day. Concentration 0.004 ppm of 1-MCP was able to extend optimum vase life of cut flowers bihip until 11.30 day. Method 1-MCP application to efficiently extend until 11.10 day bihip flowers are soaking in a solution of 1-MCP. The combination treatment of 1-MCP to extend the vase life of flowers bihip that 1-MCP treatment concentration of 0.004 ppm by soaking treatment
Keyword: Silvana, Zingiber spectabile Griff, vase life, bihip, Aplikasi 1-Methylcyclopropene

Judul: Aplikasi 1-Methylcyclopropene untuk Meningkatkan Vase life Bunga Potong Tapeinochilos anannaceae K. Schum
Abstrak: The quality of Tapeinochilos anannaceae K. Schum (kasturi) as cut flower must be kept on freshness during the storage, so it needs to get a good post harvest treatment. One of the post harvest technology can be applied is 1- Methylcyclopropene (1-MCP). The position of flower at the storage can also affect the vase life of cut flowers. This experiments is aimed lengthen the vase life of kasturi cut flower by using 1-MCP, to get the optimum concentration of 1-MCP and to get the best storage position for prolonging the vase life of kasturi cut flower. The experiments was arranged in a randomized completely design with factorial pattern, consisted of two factors and ten replications. First factor was the concentration of 1-MCP, consisted of five levels: 0 ppm (A0), 0.1 ppm (A1), 0.2 ppm (A2), 0.3 ppm (A3), and 0.4 ppm (A4). The second factor was the storage in vertical and horizontal position. The results showed that application of 1-MCP can prolong the vase life of kasturi cut flower until 1.2-1.8 times compare without 1-MCP application. The combination of optimum treatment to extend vase life kasturi flowers cut is 1-MCP with 0.3 ppm concentration and stored in vertical position.
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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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