Judul: Analisi Port Efficiency Terhadap Perdagangan Bilateral Indonesia di Kawasan ASEAN+6
Abstrak: During the period 2007-2012 Indonesian trade flows from and to the ASEAN +6 countries predominantly transported via sea transport modes so that ports efficiency can increase the volume of trade between Indonesia and ASEAN +6 countries. Gravity model are used to estimate the relationship of panel data port efficiency variable against Indonesian total bilateral trade. The variables used in this study are the per capita GDP of ASEAN +6, per capita GDP of Indonesia, economic distance, port efficiency is proxied by QPI and connectivity and LPI. LPI consists of six constituent components, namely, customs, infrastructure, priced shipment, timeliness, logistik, and trackingtrace. The estimation results of the gravity model of approach shows that the variables significantly positively influence the trade are Indonesia's per capita GDP, per capita GDP of ASEAN +6, QPI, Connectivity, Customs, Timeliness and Infrastructure. While the economic distance variables and priced shipment significantly negatively influence the trade.
Keyword: the gravity model of bilateral trade., port efficiency, ASEAN+6, Bogor Agricultural University (IPB)

Judul: Analisis Kualitas Infrastruktur Pelabuhan Terhadap Arus  Perdagangan Bilateral Indonesia di Kawasan ASEAN+6
Abstrak: Total perdagangan Indonesia dengan negara-negara ASEAN+6 mencapai 60 persen dari total perdagangan Indonesia ke dunia. Arus perdagangan Indonesia dari dan ke negara-negara ASEAN+6 didominasi oleh transportasi laut. Tujuan dari penelitian ini adalah menganalisis pengaruh kualitas infrastruktur pelabuhan terhadap perdagangan bilateral di negara-negara ASEAN+6 dan mendeskripsikan gambaran umum kualitas infrastruktur pelabuhan di kawasan ASEAN+6. Data yang digunakan dua belas negara anggota ASEAN+6 dari tahun 2014-2019. Metode yang digunakan pada penelitan ini terdiri dari analisis deskriptif dan analisis data panel dengan menggunakan gravity model. Hasil estimasi dan analisis menunjukkan bahwa pengaruh kualitas infrastruktur pelabuhan terhadap perdagangan bilateral di ASEAN+6 berpengaruh positif signifikan oleh variabel-variabel berikut: PDB per kapita ASEAN+6, jarak ekonomi, kualitas infrastruktur pelabuhan Indonesia, kualitas infrastruktur pelabuhan ASEAN+6, perdagangan lintas batas dan arus lalu lintas kontainer pelabuhan. Sementara itu, PDB per kapita Indonesia berpengaruh negatif terhadap perdagangan bilateral., Indonesia's total trade with ASEAN+6 countries reached 60 percent of Indonesia's total trade to the world. Indonesian trade flows from and to the ASEAN+6 countries are predominantly by sea transportation. The purpose of this study was to analyze the effect quality of port infrastructure on bilateral trade in the ASEAN+6 countries and describe a general description of quality port infrastructure in ASEAN+6. Data used twelve member countries ASEAN+6 members from 2014-2019. The method used in this research consists of descriptive analysis and panel data analysis using a gravity model. The results of showed that the effect of quality of port infrastructure on bilateral trade in ASEAN+6 is significantly positive influenced by these variables: per capita GDP of ASEAN+6, economic distance, Indonesia’s quality of port infrastructure, quality of port infrastructure ASEAN+6, trading across borders and container port traffic. Meanwhile, Indonesia's per capita GDP has a negative effect on bilateral trade.
Keyword: ASEAN+6, Gravity model, Bilateral Trade, Quality Port Infrastructure

Judul: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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