Judul: Peningkatan Kinerja Pengemasan Pisang Ambon (Musa Paradisiaca L.) Selama Transportasi dengan Penataan Posisi Pisang dan Jenis Bahan Pengisi
Abstrak: This study specifically aims to determine the effect of the use of filler materials packaging and how an effort to improve the performance of a ambon banana’s packaging so it can reduce mechanical damage during transportation. Materials used in this study include yellow banana, corrugated cardboard Regular Slotted Container (RSC) with the flute type B / C, packaging filler materials such as paper cuts and leaf and stem of a banana. Equipment used are simulator tables, scales Mettler, Rheometer, Refrigerator, and Refractometer. Bananas are packed into cardboard packaging with a weight of 15 kg each with different filler, paper cuts. After the bananas are packed, carried out simulations of transport as many as three replicates with an average amplitude 3,23 cm and frequency 3,27 Hz which is equivalent to 223,32 km out of town trips. Maximum equivalent to the track overland journey from one of Purwakarta to Merak. After the simulation of transportation, highest level of mechanical damage were banana in a box without filler materials with the supine position at 6,22%, while the lowest damage were banana in a cardboard box with filler and paper cuts. Bananas stored mechanical damage was observed at three different temperatures, there are 10ºC, 15ºC and 27ºC. Banana color changed from green to yellow to orange during storage. The color change indicator in this study the different savings at each temperature, there are 10ºC = 4 weeks, 15ºC = 2-3 weeks and 27ºC = 6 days. Result of observations were tested using SAS 9.1 that the use of filler material, arrangement, temperature and storage time significantly affected the physical and chemical properties of banana such as weight loss, hardness, total solids content, and color changes. Decrease in weight experienced by banana row views from the highest score after six days of storage are stored at a temperature of banana 10ºC with filler and banana leaf midrib of 24,56 grams, 15ºC with filler paper for 35 grams, and temperature with filler 27ºC amounted to 62,22 grams of paper. At the end of the storage period, the highest of violence experienced by the banana is not stored in boxes made from filler with supine position at a temperature 10ºC=14,64 N. While the lowest violence experienced by the banana which was stored at 27ºC without fillers and supine position at 6,44 N. Changes in color and increased total solids which are relatively more slowly happening in bananas stored at a temperature 10ºC without filler at 7,2 scale, while the opposite happens in a banana that is stored at temperatures 27ºC without filler at 5,25 scale.
Keyword: 

Judul: Study of Banana (Cv. Mas Kirana) Storage in Active Modified Atmosphere Packaging using Potassium Permanganate
Abstrak: Cv. Mas Kirana is one of popular banana variety commonly grown in Indonesia and the mainstay of banana industry for both domestic and export trades. Major constraints and problem associated with postharvest handling of fresh banana are short shelf life and lack of postharvest handling. There is a need to find appropriate storage method in order to extend the storage life to mantain the fruit quality for retail packaging for domestic market. Modified atmosphere packaging (MAP) is an ideal preservation technique and is known to have great potential to extending the postharvest life of banana with potassium permanganate (KMnO4) sachets as ethylene absorbent were used in MAP to absorb endogenously produced ethylene. The purpose of this study was to evaluated for fruit quality and shelf life under MAP packaging, with or without an (KMnO4). The data obtained from physico chemical analysis and sensory evaluation were analyzed statically for analysis of variance with Duncan test (p<0.05) was used to detect significant differences for the treatment means. The results indicate that the shelf life of fruits packed under White Stretch Film (WSF) with KMnO4 (active MAP) at 28 °C could be extended up to 10 days compared to 6 days for banana control packed under WSF without KMnO4 (passive MAP), and the shelf life of fruits packed under active MAP at 15 °C could be extended up to 24 days compared to 16 days for passive MAP. Active MAP treatments delayed weight loss, colour, texture, starch content, total soluble solids (TSS), ascorbic acid (Vitamin C) and pulp of water content as compared to control banana (passive MAP). Sensory quality (colour, texture, aroma, and taste) of fully ripe fruits of both WSF without KMnO4 and WSF with KMnO4 was very good.
Keyword: Active modified atmosfir packaging, potassium permanganate, ethylene absorbent, banana

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
Keyword: