Judul: Analisis Daya Saing dan Faktor-Faktor yang  Memengaruhi Ekspor Karet Remah di  Asia Timur dan  Amerika Utara
Abstrak: Karet remah merupakan salah satu komoditas unggulan ekspor Indonesia. Penelitian ini bertujuan antara lain untuk menganalisis daya saing ekspor karet remah Indonesia, menganalisis faktor-faktor yang memengaruhi ekspor karet remah Indonesia, dan memproyeksikan volume ekspor karet remah Indonesia di kawasan Asia Timur dan Amerika Utara pada tahun 2021-2025. Hasil analisis Revealed Comparative Advantage (RCA), Export Product Dynamic (EPD), dan Accelaration Ratio (AR) menunjukkan karet remah Indonesia berdaya saing secara komparatif dan kompetitif serta mampu menguasai pasar ekspor karet remah di Asia Timur dan Amerika Utara meskipun bersaing ketat dengan karet remah Thailand dan Vietnam. Hasil analisis Gravity Model menunjukkan variabel PDB perkapita negara tujuan, nilai tukar riil negara tujuan terhadap Dolar Amerika Serikat, dan jarak ekonomi berpengaruh signifikan terhadap volume ekspor karet remah Indonesia di Asia Timur dan Amerika Utara. Hasil analisis Autoregressive Integrated Moving Average (ARIMA) memproyeksikan volume ekspor tahunan karet remah Indonesia pada periode tahun 2021-2025 ke Asia Timur mengalami kenaikan, sedangkan volume ekspor ke Amerika Utara pada periode yang sama mengalami penurunan., Crumb rubber is one of Indonesia's leading export commodities. This study aims such as, to analyze the competitiveness of Indonesia's crumb rubber exports, analyze the factors that influence Indonesia's crumb rubber exports, and predict Indonesian crumb rubber exports volume in East Asia and North America in 2021-2025. The Revealed Comparative Advantage (RCA), Export Product Dynamic (EPD), and Acceleration Ratio (AR) results show that Indonesian crumb rubber comparatively and competitively excels and could seize export market in East Asia and North America despite competing with Thai and Vietnamese. The result of Gravity Model shows that the GDP percapita of importer country, the real exchange rate of the importer country against the US Dollar, and economic distance have a significant effect on the volume of Indonesian crumb rubber exports in East Asia and North America. The result of Autoregressive Integrated Moving Average (ARIMA) predicts that the annual export volume of Indonesian crumb rubber in 2021-2025 to East Asia will increase, while export volume to North America in the same period will decrease.
Keyword: AR, ARIMA, EPD, Gravity Model, RCA

Judul: Analisis daya saing industri karet remah (crumb rubber) Indonesia
Abstrak: Indonesia merupakan produsen karet terbesar kedua di dunia setelah Thailand. Karet yang diperjualbelikan di pasar domestik maupun luar negeri berbentuk karet alam dan karet sintesis. Sebagian besar karet yang dihasilkan Indonesia dalam bentuk karet alam dan 70 persen karet alam Indonesia diproduksi menjadi karet remah (crumb rubber). Karet remah (crumb rubber) merupakan karet alam yang diolah secara khusus sehingga mutunya terjamin secara teknis. Karet remah digunakan sebagai bahan baku untuk memroduksi ban, permintaan karet remah dunia meningkat seiring dengan peningkatan industri otomotif. Ketatnya persaingan antara produsen karet remah di dunia menuntut Indonesia untuk dapat bersaing dengan produsen karet remah lain. Untuk itu, karet remah yang dijual ke luar negeri harus dapat bersaing dalam hal mutu dan kuantitas penjualan dengan negara produsen karet remah lain. Tujuan dari penelitian ini adalah (1) menganalisa daya saing (keunggulan kompetitif) industri karet remah Indonesia, (2) menganalisa daya saing (keunggulan komparatif) industri karet remah Indonesia serta faktor-faktor yang memengaruhi daya saing industri karet remah di pasar internasional, (3) merumuskan strategi untuk meningkatkan daya saing industri karet remah Indonesia di pasar internasional.
Keyword: 

Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell