Judul: Kekerabatan Ikan Famili Gobi di Pantai Selatan Jawa Barat dan Sumbawa Berdasarkan Karakter Morfometrik
Abstrak: Ikan gobi merupakan marga ikan yang mendiami habitat perairan dengan kondisi salinitas berbeda sesuai dengan perkembangan hidupnya, sehingga ikan ini bersifat amphidromus. Ikan gobi mmiliki adaptasi morfologi yang unik berupa sirip perut yang menyatu (pelvic disc). Ikan gobi yang diteliti berasal dari Sungai Sejorong dan Sungai Citepus. Dari dua sungai yang berbeda perlu dilkakukan analisis morfometrik untuk mengetahui kekerabatan ikan gobi antar dua sungai tersebut. Metode yang dilakukan untuk menganalisis morfometrik ikan gobi terdiri dari dua metode, yaitu metode TNA (Truss Network Analysis) dan Metode konvensional. Hasil pengukuran morfometrik yang didapat kemudian diolah menggunakan metode Uji-T, Kruskal-Wallis, Mann-Whitney, Analisis gerombol, dan Analisis diskriminan. Hasil yang didapat dengan menggunakan metode TNA, menunjukkan bahwa terdapat perbedaan karakter antarspesies yang sama dikarenakan memiliki wilayah perairan yang berbeda., Goby fish is a genus of fish that inhabits aquatic habitats with varying salinity conditions according to its life cycle, making it amphidromous. Goby fish has a unique morphological adaptation in the form of fused pelvic fins known as the pelvic disc. The studied goby fish originated from Sejorong River and Citepus River. To determine the relationship between goby fish populations from the two different rivers, a morphometric analysis needs to be conducted. The methods used for analyzing the morphometrics of goby fish include Truss Network Analysis (TNA) and conventional methods. The obtained morphometric measurements are then processed using t-test, Kruskal-Wallis test, Mann-Whitney test, Cluster Analysis, and Discriminant Analysis. The results obtained through TNA method indicate differences in characteristics among the same species due to their different aquatic habitats.
Keyword: relationship, goby fish, morphometric characteristics, phenotypic differences, TNA

Judul: Morphological study of goby (gobiidae) from Lombok Island – Indonesia
Abstrak: Gobies (family Gobiidae) are bottom-dwelling fishes with flattened head, rounded snout, and bulbous cheeks that having a characteristic of two soft-spined dorsal fins and united ventral fins (disc-like) adapted to bottom-living life style. These modified fins are sucker device which enable the fish to grasp on surfaces and prevent from drifting in fast water current. Gobies are one of fish group who dominate ocean islands because of amphidromous larvae stage, euryhalinity, small size, an excellent climbing ability, a wide range of trophic level, frequent lack of gas bladder, and an associated bottom-living life style.
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Judul: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition