ANALISIS CPUE (CATCH PER UNIT EFFORT) DAN TINGKAT PEMANFAATAN SUMBERDAYA PERIKANAN LEMURU (Sardinella lemuru) DI PERAIRAN SELAT BALI

Ikan Lemuru merupakan salah satu sumberdaya ikan yang mempunyai potensi dan nilai ekonomis yang cukup tinggi, sehingga ikan Lemuru (Sardinella lemuru) menjadi hasil tangkapan utama di perairan Selat Bali. Ikan Lemuru terkonsentrasi di Selat Bali dengan produksi 36.908 ton (23,3%) dari total produksi ikan pelagis kecil di WPP 573 yaitu sebesar 158.404 ton (BPPL, 2014). Penelitian ini bertujuan untuk menganalisis CPUE ikan lemuru dan menganalisis potensi lestari serta tingkat pemanfaatan di Selat Bali. Metode yang digunakan dalam penelitian ini adalah deskriptif yang bersifat studi kasus dan sampel yang digunakan dalam penelitian ini berjumlah 122 sampel, dimana sampel tersebut terdiri dari nelayan purse seine, gill net, bagan, dan payang. Metode analisis yang digunakan meliputi CPUE, MSY dan tingkat pemanfaatan. Hasil penelitian menunjukan bahwa tren CPUE mengalami kenaikan antara 2011-2015 dengan nilai rata-rata tahun 2010-2015 252 kg/trip, diperoleh CMSY sebesar 34.284.153 kg/tahun, EMSY 31.232 trip/tahun. Tingkat pemanfaatan masih dbawah CMSY dengan rata-rata 13.627.749 kg/tahun dan tingkat pengupayaan sudah melebihi EMSY dengan rata-rata 55.280 trip/tahu

Studi Eksperimen Aktivitas Fotografi untuk Menurunkan Tingkat Kecemasan dan Stres

Camera feature on a smartphone may bring positive impacts but it was rarely scientifically investigated. This research examines therapeutic effect of photography in reducing anxiety and stress symptoms through experimental design. Twenty participants were enrolled into two studies and were split into control group and treatment group receiving twelve sessions of photography therapy. Anxiety and stress were measured with DASS-42. Wilcoxon signed rank test and binary logistic regression showed photography therapy sessions were associated with lower level of anxiety and stress on both study groups. Careful conclusion of therapeutic photography efficacy was discussed due to low level of control during experiment.Penggunaan fitur kamera pada smartphone dapat membawa dampak positif namun belum banyak dikaji secara empirik. Penelitian ini menguji efek therapeutic fotografi dalam menurunkan gejala kecemasan dan stres dengan menggunakan desain eksperimen. Dua puluh partisipan tergabung ke dalam dua studi yang dipisahkan atas kelompok kontrol dan kelompok yang menerima dua belas sesi terapi fotografi. Tingkat kecemasan dan stres diukur dengan menggunakan alat ukur DASS-42. Hasil analisis Wilcoxon signed rank test dan binary logistic regression menunjukkan sesi terapi fotografi terasosiasi dengan penurunan tingkat kecemasan dan stres pada kedua kelompok studi. Kajian terhadap rendahnya kendali variabel selama eksperimen menjadi faktor yang penting diperhatikan dalam penarikan simpulan efektivitas therapeutic fotografi

Fixed Bed Adsorption of Natural Organic Matter Using Ozonated Carbon Active

Nowadays water, one the most important substance in human life, are being much polluted by not only industrial activities but also caused by human activities and natural polluted material. One of the natural impurities that commonly occur in water is Natural Organic Matter (NOM). NOM are extracted organic compounds from soils, plants, or decomposed animals that infiltrate into the water body when the water contacts with those materials. Thus, the presence of NOM in water body is inevitable. Many techniques have been applied to remove this impurity such as coagulation, flocculation, and filtration. In this research, NOM were controlled using ozonated activated carbon in a fixed bed adsorption system. There were two parameters studied that are activated carbon ozonation time that ranging from 5 - 25 minutes and the fixed bed height of 1 - 7.5 cm. Interestingly, the investigation showed that the optimum condition for the bed height was obtained at 6 cm whilst the optimum carbon active ozonation time was at 5 minute. The experiment was concordant with the conducted BET analysis that showed the highest activated carbon surface area at 5 minute compared to other ozonation time. The ozonated activated carbon was also found to be have slightly better adsorption performance compared to unozonated activated carbon bought from the market with capacity of ozonated activated carbon adsorption was found to be 6.12 ϰ 10-3 mg/g

Fixed Bed Adsorption of Natural Organic Matter Using Ozonated Carbon Active

Nowadays water, one the most important substance in human life, are being much polluted by not only industrial activities but also caused by human activities and natural polluted material. One of the natural impurities that commonly occur in water is Natural Organic Matter (NOM). NOM are extracted organic compounds from soils, plants, or decomposed animals that infiltrate into the water body when the water contacts with those materials. Thus, the presence of NOM in water body is inevitable. Many techniques have been applied to remove this impurity such as coagulation, flocculation, and filtration. In this research, NOM were controlled using ozonated activated carbon in a fixed bed adsorption system. There were two parameters studied that are activated carbon ozonation time that ranging from 5 - 25 minutes and the fixed bed height of 1 - 7.5 cm. Interestingly, the investigation showed that the optimum condition for the bed height was obtained at 6 cm whilst the optimum carbon active ozonation time was at 5 minute. The experiment was concordant with the conducted BET analysis that showed the highest activated carbon surface area at 5 minute compared to other ozonation time. The ozonated activated carbon was also found to be have slightly better adsorption performance compared to unozonated activated carbon bought from the market with capacity of ozonated activated carbon adsorption was found to be 6.12 ϰ 10-3 mg/g