Judul: Telaah beberapa aspek bioekologi kur-kura belawa (Trionyx cartilagneus Boddaert) di Belawa, Cirebon, Jawa Barat
Abstrak: Kura-kura Belawa (T. cartilagineus) merupakan jenis kura-kura air tawar yang memiliki, bentuk punggung yang cekung bukannya cembung. Kura-kura ini diberi nama belawa karena ditemukan banyak di wilayah Desa Belawa. Untuk menunjang upaya pelestariannya maka diperlukan pengetahuan dasar mengenai aspek bioekologi Kura-kura Belawa (T. cartilagineus) karena penelitian-penelitian tentang Kura-kura Belawa dan kura-kura air tawar yang lainnya di Indonesia masih langka. Telaah bioekologi Kura-kura Belawa bertujuan untuk: (1) mempelajari beberapa aspek biologi Kura-kura Belawa (T. cartilagineus), dan (2) mempelajari beberapa aspek ekologi Kura-kura Belawa (T. cartilagineus). Penelitian ini dilakukan di Perairan Cikuya, Desa Belawa, Kecamatan Sedong, Kabupaten Cirebon, Propinsi Jawa Barat yaitu pada bulan Mei 1994 dan bulan Agustus sampai bulan Oktober 1994. ...
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Judul: Kura-kura air tawar (Ordo testudinata) di kawasan cagar alam Gunung Tukung Gede dan rawa danau Kabupaten Serang, Propinsi Banten
Abstrak: AD FARAJALLAH dan TARUNI SRI PRAWASTI. Kura-kura air tawar (Ordo Testudinata) yang menyebar di Indonesia terdiri dari empat famili, yaitu Emydidae, Trionychidae, Chelidae dan Carettochelidae. Penelitian ini bertujuan untuk mengetahui keberadaan kura-kura air tawar (Ordo Testudinata) di Kawasan Gunung Tukung Gede dan Rawa Danau Kabupaten Serang, Propinsi Banten. Penelitian dilakukan mulai September 2000 sampai Februari 2001. Kegiatan penelitian ini dibagi menjadi 3 bagian, yaitu penangkapan kura-kura (dengan cara berburu dan memancing), identifikasi kura-kura menggunakan kunci identifikasi dari Ernst & Barbour. Analisis ekologi dilakukan di habitat kura-kura air tawar yang ditemukan. Panjang total sungai yang ditelusuri di Kawasan Cagar Alam Gunung Tukung Gede dan Rawa Danau adalah 51,35 km. Kura-kura air tawar yang berhasil ditangkap selama periode pengamatan sebanyak 9 ekor diidentifikasi sebagai 3 spesies, yaitu Cuora amboinensis, Cyclemys dentata (Famili Emydidae) dan Amyda cartilaginea (Famili Trionychidae). Cuora amboinensis ditemukan sebanyak 5 ekor, Cyclemys dentata 3 ekor dan Amyda cartilaginea sebanyak 1 ekor. Kura-kura air tawar dapat ditemukan di sungai, kolam, pematang sawah dan rawa., Indonesian fresh water turtles could be classified into four families, that are Emydidae. Trionychidae, Chelidae and Carettochelidae. This research was conducted to study fresh water turtles in Mount Tukung Gede and Rawa Danau Nature Reserves (Serang, Banten Province). The animals were caught during September 2000 -February 2001 by means of hunting and fishing. The key identification of Ernst & Barbour was used to identify the specimen. Furthermore, ecological analysis was done in the surrounding area where the specimen were found. The total length of rivers in Mount Tukung Gede and Rawa Danau Nature Reserves is 51.35 km. Nine individuals of fresh water turtle that was found could be identified as 3 species : Cuora amboinensis (5 individuals) and Cyclemys dentata (3 individuals) (Famili Emydidae), and Amyda cartilaginea (1 individual) (Famili Trionychidae). The fresh water turtles could be found in rivers, ponds, rice field and swamps.
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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