Judul: Southern Bluefin Tuna Fishing Quota Management in Indonesia.
Abstrak: Southern bluefin tuna (Thunnus maccoyii) is kind of big tuna that able to swim very fast and very long distance migration (highly migratory). SBT overfishing due to population decreased. If fishing uncontrollable, SBT will be destroyed, therefore it is endangered species. Commission for The Conservation of Southern Bluefin Tuna (CCSBT) is a Regional Fisheries Management Organization (RFMO) that focus on SBT management. Through appropriate management. CCSBT to ensure conservation and optimum exploitation of SBT. CCSBT adopt management process based on output control. CCSBT apply SBT fishing quota toward every country with Management Procedure (MP). As the member of Commission for The Conservation of Southern Bluefin Tuna (CCSBT), Indonesia shall follow the quota measure of SBT fishing that has determined. Therefore, good management and rules were needed for SBT exploitation in Indonesia in order to align with measures and international regulation that has agreed by Indonesia as part of CCSBT. Indonesia find difficulties to determine SBT fishing quota that due to surplus of SBT National quota. Therefore, management action based on output control through SBT fishing quota is very needed. SBT fisheries system in Indonesia could be identified through related elements with SBT fisheries system. This research will studied some issues that related to : (i) SBT resources, (ii) SBT fisheries exploitation, and (iii) SBT fisheries management. In this research, soft system methodology approach used to compose conceptual SBT quota management model in Indonesia. This research objective are : (1) to describe SBT fisheries in Indonesia, (2) to identify SBT fisheries problems in Indonesia, (3) to analyze SBT fisheries management in Indonesia, (4) to determine catch composition, productivity of tuna long line in Indonesia especially that doing SBT fishing activity, (5) to estimates fishing season, (6) to determine mean size at capture of SBT in Indonesia, and (7) to formulize conceptual fishing quota management model of SBT in Indonesia. Results of research could be concluded : 1. SBT fisheries have a unique character. Generally product of SBT in Indonesia for current 12 years (2002-2013) intend to increased. SBT that landed in Indonesia some of them fished in WPP-RI 573 (the Indian Ocean south of Java until sothern of Nusa Tenggara of south, western Sawu sea and Timor sea) that part of zone number 1 CCSBT statistical area of catch. 2. Common problem of SBT fisheries in Indonesia are : • Indonesia has a crucial area in the sustainability of SBT fisheries resources as spawning ground for SBT but SBT fisheries statistic data is not accurate; • Indonesia as a CCSBT member has not transformed to all obligation that in the CCSBT convention; • Indonesia’s SBT quota has surplus that determined by CCSBT and smaller than capability of Indonesia production. 3. In SBT fisheries management, Indonesia has made policies, such as : • National SBT quota given to two associations ATLI and ASTUIN. • Indonesia has transformed one of obligation that in the convention of CCSBT about fishing vessels registration in the national laws. • Indonesia attempt to find SBT data through Catch Documentation Scheme (CDS). 4. Southern bluefin tuna has the smallest percentage
Keyword: CCSBT, southern bluefin tuna, tuna long line, soft system methodology

Judul: Southern Bluefin Tuna Fishing Quota Management in Indonesia.
Abstrak: Southern bluefin tuna (Thunnus maccoyii) is kind of big tuna that able to swim very fast and very long distance migration (highly migratory). SBT overfishing due to population decreased. If fishing uncontrollable, SBT will be destroyed, therefore it is endangered species. Commission for The Conservation of Southern Bluefin Tuna (CCSBT) is a Regional Fisheries Management Organization (RFMO) that focus on SBT management. Through appropriate management. CCSBT to ensure conservation and optimum exploitation of SBT. CCSBT adopt management process based on output control. CCSBT apply SBT fishing quota toward every country with Management Procedure (MP). As the member of Commission for The Conservation of Southern Bluefin Tuna (CCSBT), Indonesia shall follow the quota measure of SBT fishing that has determined. Therefore, good management and rules were needed for SBT exploitation in Indonesia in order to align with measures and international regulation that has agreed by Indonesia as part of CCSBT. Indonesia find difficulties to determine SBT fishing quota that due to surplus of SBT National quota. Therefore, management action based on output control through SBT fishing quota is very needed. SBT fisheries system in Indonesia could be identified through related elements with SBT fisheries system. This research will studied some issues that related to : (i) SBT resources, (ii) SBT fisheries exploitation, and (iii) SBT fisheries management. In this research, soft system methodology approach used to compose conceptual SBT quota management model in Indonesia. This research objective are : (1) to describe SBT fisheries in Indonesia, (2) to identify SBT fisheries problems in Indonesia, (3) to analyze SBT fisheries management in Indonesia, (4) to determine catch composition, productivity of tuna long line in Indonesia especially that doing SBT fishing activity, (5) to estimates fishing season, (6) to determine mean size at capture of SBT in Indonesia, and (7) to formulize conceptual fishing quota management model of SBT in Indonesia. Results of research could be concluded : 1. SBT fisheries have a unique character. Generally product of SBT in Indonesia for current 12 years (2002-2013) intend to increased. SBT that landed in Indonesia some of them fished in WPP-RI 573 (the Indian Ocean south of Java until sothern of Nusa Tenggara of south, western Sawu sea and Timor sea) that part of zone number 1 CCSBT statistical area of catch. 2. Common problem of SBT fisheries in Indonesia are : • Indonesia has a crucial area in the sustainability of SBT fisheries resources as spawning ground for SBT but SBT fisheries statistic data is not accurate; • Indonesia as a CCSBT member has not transformed to all obligation that in the CCSBT convention; • Indonesia’s SBT quota has surplus that determined by CCSBT and smaller than capability of Indonesia production. 3. In SBT fisheries management, Indonesia has made policies, such as : • National SBT quota given to two associations ATLI and ASTUIN. • Indonesia has transformed one of obligation that in the convention of CCSBT about fishing vessels registration in the national laws. • Indonesia attempt to find SBT data through Catch Documentation Scheme (CDS). 4. Southern bluefin tuna has the smallest percentage
Keyword: CCSBT, southern bluefin tuna, tuna long line, soft system methodology

Judul: Electrochemical Sensor Based on Graphene Oxide/PEDOT:PSS Decorated with AuAg Nanozyme for H2O2 Detection
Abstrak: H2O2 merupakan senyawa penanda hayati keadaan stres oksidatif tubuh sehingga diperlukan metode deteksi H2O2 yang cepat dan akurat. Sensor elektrokimia berbasis nanozyme peroksidase, seperti Au-NPs dan Ag-NPs, menawarkan alternatif metode deteksi yang menjanjikan karena ukuran alat yang kecil, kinerja analitik yang lebih baik, dan efisien biaya. Penelitian ini bertujuan mengembangkan sensor elektrokimia non-enzimatik menggunakan nanopartikel bimetal AuAg pada elektrode karbon kaca yang dimodifikasi dengan komposit grafena oksida dan poli(3,4-etilenadioksitiofena)-poli(stirena-4-sulfonat). Elektrode termodifikasi bimetal AuAg-NPs menunjukkan respons pada H2O2 yang lebih tinggi daripada elektrode termodifikasi monologamnya, dengan respons linear dalam rentang konsentrasi H2O2 75–200 µM, sensitivitas 0,0407 μA μM-1, dan limit deteksi mencapai 25 μM. Elektrode hasil modifikasi menunjukkan keterulangan pengukuran yang baik dan selektif terhadap H2O2. Elektrode yang dimodifikasi berhasil digunakan untuk mengukur kadar H2O2 dalam sampel urine sintetis serta memberikan hasil yang tidak berbeda nyata dengan metode spektrofotometri.
Keyword: AuAg-NPs, electrochemical sensor, graphene oxide, H2O2, PEDOT:PSS