Judul: Pengujian repelensi dari bahan rempah-rempah terhadap tikus rumah Rattus rattus diardii Linn.(Rodentia:Muridae)
Abstrak: Tikus merupakan satwa liar yang telah berasosiasi dengan kehidupan manusia. Asosiasi tikus dengan manusia sering bersifat parasitisme karena menyebabkan kerugian bagi manusia. Tikus rumah (R. rattus diardii) merupakan salah satu jenis tikus yang sering menyebabkan gangguan dan kerusakan, serta menjadi vektor penyakit bagi manusia. Untuk menekan populasi tikus tersebut telah dilakukan berbagai upaya pengendalian baik secara kimia maupun non kimia.
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Judul: Uji preferensi rodentisidadan umpan serta efikasi rodentisida terhadap tikus pohon [Rattus tiomanicus Mill.] dan Tikus rumah [Rattus rattus diardii Linn]
Abstrak: Tikus merupakan satwa liar yang seringkali berasosiasi dengan kehidupan manusia. Saat ini pohon (Rattus tiomanicus) dan tikus rumah (Rattus rattus diardii) dapat menyebabkan kerusakan di permukiman maupun areal perkebunan, hal ini disebabkan banyaknya areal perkebunan yang tidak jauh dari tempat permukiman manusia, Upaya pengendalian tikus pohon dan tikus rumah sudah banyak dilakukan oleh manusia baik secara kimia, kultur teknis, mekanik, maupun secara biologi. Dalam pengendalian dengan rodentisida diperlukan umpan di sekitarnya, sehingga perlu diadakan pengkajian tentang jenis umpan yang disukai dan rodentisida yang efektif untuk mengendalikan tikus pohon dan tikus.
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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