Judul: Value Chain Model of Anchovy (Stolephorus commersonnii) Industry with Sustainability Business in Sumenep Regency, Madura, East Java
Abstrak: Permasalahan perikanan di Kabupaten Sumenep sangat kompleks, dimulai dari penangkapan hingga pemasaran. Masalah utama meliputi penurunan produktivitas, kurangnya fokus pemerintah pada pengelolaan rantai pasok ikan teri nasi, dan keterbatasan informasi relevan. Penelitian bertujuan menciptakan model rantai pasok yang efisien, bisnis berkelanjutan, dan menguntungkan semua pelaku usaha, termasuk nelayan dan pengrajin teri nasi. Pendekatan sistem mencakup analisis kebutuhan, formulasi masalah, dan rekayasa model awal dengan diagram causal loop dan input-output. Hasil menunjukkan rantai pasok ikan teri nasi di Sumenep melibatkan tujuh pelaku utama: nelayan, pengepul, pemasok besar, industri ekspor, perusahaan induk, pengolah teri nasi krispi, dan konsumen akhir. Selanjutnya, ada tiga aliran utama: barang (hulu ke hilir), uang (hilir ke hulu dan hulu ke hilir), dan informasi (hulu ke hilir dan hilir ke hulu). Analisis nilai tambah pengolahan teri nasi di Sumenep rendah, rata-rata kurang dari 50%. Model menunjukkan target minimum produksi dan keuntungan untuk setiap pelaku usaha, termasuk nelayan pemilik kapal (1.538 kg, Rp33.846.154), pengepul (3.304 kg, Rp111.000.000), pemasok besar (314 kg, Rp35.000.000), perusahaan chirimen (1.094 kg, Rp218.776.551), dan pengolah teri nasi krispi (2 kg, Rp275.735), yang mana tiap mata rantai membutuhkan volume sekian dengan jumlah keuntungan tersebut untuk mendapatkan target minimum produksi yang ideal.
Keyword: Smallholder Palm Oil Supply Chain, value chain, added value analysis, anchovies, break event point

Judul: Analisis Bioekonomi Pengelolaan dan Pemanfaatan Sumberdaya Ikan Teri (Stolephorus sp.) di Perairan Kabupaten Asahan, Provinsi Sumatera Utara
Abstrak: Anchovy is one of important pelagic species produced in Asahan Regency. Anchovy production not only to supply local needs, but also it has been exported to neighboring countries. Based on the analysis of the declining of achovy production showed that there is problem in resource management. The objectives of this research were to study proper anchovy resource management in the Asahan sea. Analytical approaches were used bioeconomic and variance analyses. Bioeconomic analysis using Gordon-Schaefer model approach obtained the actual catchment condition (h) is 725.94 tons/year, effort (E) 947.22 trips/year and the economic rent of Rp 12,648,510,194/year. Catch of MSY level (h) is 1,200.92 tons/year, effort (E) 834.96 trips/year and the economic rent of Rp 22,951,655,440/year. Catch of MEY level (h) is 1,198.41 tons/year, effort (E) 796.75 trips/year and economic rent of Rp 23,004,560,220/year. Current exploitation rate has exceeded sustainable levels of optimal exploitation both in terms of MSY or MEY which lead to overfishing. Based on the estimation of degradation and depreciation rate, the anchovy resource in the Asahan sea has not been degradated and depreciated. This is indicated by the value of degradation and depreciation rate coefficient are 0.27774 and 0.28790. The factors that significantly correlated with fishers perception to anchovy resource are fishing gears, government programs, and the environment are the education levels, fishing experience, and the participation in fisher's organizations. Anchovy resource management can be directed toward MEY conditions to obtain the maximum benefit, but this policy has an impact on the reduction of labor. In order to absorb the larger employment and the sustainability of resource, the resource management policy is directed toward MSY level by reducing fishing gears as much 112,26 units anchovy purse seine from the current level of exploitation. This policy must be supported by clear rule/ regulations and continuous monitored by all parties.
Keyword: North Sumatera, management, bioeconomic, Asahan, anchovy

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