Judul: Karakteristik Gen Cytochrome Oxidase subunit I (COI) Tiram Daging dari Genus Crassostrea sebagai Identitas Jenis di Delta Cimanuk, Jawa Barat
Abstrak: Tiram termasuk ke dalam Genus Crassostrea yang merupakan jenis kerang-kerangan yang hidup sebagai bentos di perairan pada kondisi substrat dan lingkungan yang sama akan menunjukkan respon berupa perubahan morfologi yang hampir mirip. Banyaknya jenis tiram yang memiliki bentuk yang mirip seringkali menjadi hambatan untuk membedakan jenis Crassostrea melalui identifikasi secara morfologi. Tujuan dari penelitian ini adalah untuk mengidentifikasi jenis tiram yang terdapat di perairan Delta Cimanuk melalui analisis morfologi dan keragaman nukleotida gen Cytochrome Oxidase subunit I (COI), sebagai informasi dasar dalam pengelolaan dan konservasi yang tepat sasaran. Hasil identifikasi secara morfologi menunjukkan bahwa terdapat dua spesies dari Genus Crassostrea yakni Crassostrea iredalei dan Crassostrea gigas. Identifikasi spesies melalui teknik DNA Barcoding menunjukkan bahwa terdapat satu jenis tiram dari Genus Crassostrea yakni Crassostrea iredalei dengan tingkat keakuratan sebesar 99,5%.
Keyword: Crassostrea, gen COI, identifikasi molekuler

Judul: Identifikasi Molekuler Undur-Undur Laut dari Perairan Pantai Cilacap Berdasarkan Marka Gen Cytochrome Oxidase Subunit I (COI)
Abstrak: Mole crab (Albunea symmysta) as an infaunal organism inhabits tidal-exposed sand sediment. Like other aquatic organisms, mole crab is destined to be cryptic species and complex species often leading to morphologically misidentification. Taxonomic identification for genus Albunea was uncertain due to variation in morphology. This study was aimed at identifying and analizing the phylogenetic relationship A. symmysta from Cilacap coastal waters based on molecular genetic marker Cytochrome Oxidase subunit I (COI). Isolation and extraction resulted in two intact DNA product which were amplified using universal COI primer. There were 650 bp nucleotide sequences. COI gene A..symmysta was aligned with other species catagorized as ingroup and outgroup (family Hippidae) acquired from GenBank. Alignment was performed using MEGA 5.0 software. Construction of phylogeny tree showed distinction between Albuneidae and Hippidae. There were 158 specific nucleotides in A. symmysta.
Keyword: molecular identification, COI gene, A. symmysta

Judul: Dynamic New Keynesian Model for Unemployment and Inflation Rate.
Abstrak: This paper deals with a scientific analysis of the equilibrium level of hiring, employment and unemployment. The basic model being used is a standard new Keynesian model, which states that utility function depends on consumptions and working hours. Utility maximization refers to a standard labour supply equation, with the marginal cost’s dynamics on new Keynesian model simply reflects movements in real wages and productivity. Furthermore, trade-off between output and inflation stabilization can be considered using the new Keynesian Phillips curve. Dynamic general equilibrium model is a model that can be used to study interactions between market imperfections and nominal rigidities, which is capable of overcoming the main shortcoming of the standard new Keynesian model. In the general equilibrium model there are three groups of the economy agents, namely households, firms and monetary authority. The results of this research science that bargaining processes between firms and workers will yield optimal wage. Increase in labour will cause wages to fall, but the unemployment rate can be reduced. An increase in the firm’s monopoly power will shift the labour demand curve downward, which will reduce the number of workers that firm is willing to hire for any given bargained wage.
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