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: 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: 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