Judul: Karakterisasi Miselium dan Jamur Tiram Usia 35, 40 dan 45 Hari Menggunakan Metode Fourier Transform Infrared
Abstrak: Jamur tiram (Pleurotus Ostreatus) adalah jamur yang yang mempunyai kandungan nutrisi yang lebih tinggi dibanding dengan jamur lainnya. Tujuan penelitian ini adalah menganalisis hasil panen jamur tiram terhadap waktu buka setelah inkubasi dan menganalisis hasil spektrum FTIR miselium dan jamur terhadap waktu buka setelah inkubasi. Berdasarkan hasil FTIR didapatkan gugus fungsi molekul C-O stretching, C=O stretching, C-H stretching, dan O-H stretching pada miselium dan jamur tiram. Molekul C-O stretching, CO stretching, dan C-H stretching menunjukkan adanya karbohidrat dan molekul O-H stretching menunjukkan adanya air. Kandungan O-H hari ke-40 memiliki nilai transmitansi yang rendah. Ini menunjukkan jumlah kandungan air pada hari ke-40 lebih banyak dari pada hari ke-35 dan hari ke-45. Nilai energi serapan pada jamur tiram lebih tinggi dibanding miselium…
Keyword: absorption energy, FTIR, oyster mushroom, stretching, Energi serapan, Perbandingan hasil panen, Waktu buka inkubasi, Pleuratus astreatus

Judul: Pembuatan Bibit serta Analisis Ikatan Molekul Miselium Jamur Tiram Putih dengan Fourier Transform Infra Red (FTIR)
Abstrak: Pleurotus Ostreatus is a kind of oyster mushrooms which consumed by the public . This oyster mushrooms contain high nutritional but has a high level in the sterilization when manufacture of seed. Making seeds through several stages , they are the manufacture of pure cultures , spread seeds , and planting seeds . In this study, variations in the manufacturing stages of PDA ( Potato DextrossAgar) for the variation of the old pure cultures of material boiling for 5 minutes , 10 minutes , and 15 minutes and level of sterilization media use variety of steaming tiers 1 , 2 and 3 , which each level of steamed for 1 hour with a temperature of 120 °C and the pressure of 1.5 psi . The highest success is when the variation 10 minutes and the streaming tiers 3 which the growth of mycelium in tube. Fourier Transform Infra Red (FTIR) analysis shows that the force constant of planting seeds (F2) are higher than F0 and F1. If force constant is higher so the molecule bond is stonger. It make mycelium of F2 is stronger too and it is better to be used for cultivation
Keyword: force constant, FTIR, Mycelim, Molecule bond

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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