Judul: Pengaruh Pembengkokan Gigi Garuk terhadap Hasil Tangkapan Kerang
Abstrak: Dredge is cockle colector which mostly used by Rawameneng’s fishermen. Its working principle by pulled over to rake off sea floor. The row of theeth that placed in front of below dredge mouth will rake and throw cockles in to the net bag. The accuration of throwing direction will be depended by bent angle of the dredge teeth. This research done by two studies, determination for throwing direction uses dredge theeth that was working in laboratory and dredge test that was working in field. Determination of α throwing direction used dredge theeth which is bent β=0o, β=15o, β=30o, and β=45o. Test result shows that dredge theeth β=30o give throwing angle α = 35,95o, or higher than β=0o (α = 9,85o), β=15o (α = 19,65o) and β=45o (α = 19,65o). By those reasons bent angle sets β=30o because it has much better accuracy in throwing into net bag. Dredge test in the field proved that dredge with β=30o theeth contruction caught 5.785 cockles, they are 4.228 Anadara granosa and 321 Anadara antiquata. This result showed amount that 1,7 times bigger than β=0o, they are 3.360 cockles (1.454 Anadara granosa and 136 Anadara antiquata).
Keyword: Anadara antiquata and throwing direction., Anadara granosa, dredge teeth, dredge

Judul: Perbedaan Jarak Antar Gigi pada Alat Tangkap Garuk Terhadap Hasil Tangkapan Kerang Gelatik (Anadara pilula) di Perairan Blanakan, Subang, Jawa Barat
Abstrak: One of fishing gears for catching cookles in Blanakan waters is dredge gear. A factor affecting success of fishing operation on dredge gear is the use of appropriate tooth space. The objectives of this reasearch were to determine catch composition of dredge gear and to determine effect of difference tooth space on catch number, weight, and size distribution of cookles. The tooth space used in this reasearch was 1 cm, 2 cm and 3 cm. This research indicated that catch mostly, of dredge gear was by cookles which constituted 86.47%, followed by shrimp red greasiback (3.86%) and cookles (3.46%). Based on the ANOVA test on weight and catch number, it is indicated that there was no significant different with value of probability were 0.09 and 0.06, respectively. Then, ANOVA test on size distribution of cookles indicated that there was significant different with value of probability 0.00.
Keyword: tooth space, fishing gear, dredge gear, cookles, catch

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4