Judul: Peran ekstrak tempe pada masa prapubertas terhadap kinerja reproduksi tikus betina Rattus norvegicus
Abstrak: Ekstrak tempe merupakan salah satu bentuk olahan kedelai yang mengandung fitoestrogen. Penelitian dilakukan untuk menganalisa potensi estrogenik tempe pada masa prapubertas terhadap kinerja reproduksi yang dilakukan menggunakan tikus (Rattus nonvergicus) betina berusia 21 hari. Tikus dibagi menjadi kelompok kontrol (tanpa diberi ekstrak tempe) dan kelompok perlakuan (diberi ekstrak tempe dengan dosis 6.25 g/kgBB). Pemberian ekstrak tempe dilakukan selama 28 hari. Pada umur 28, 42, dan 56 hari dilakukan pengambilan sampel ovarium, uterus dan darah. Parameter yang diamati adalah bobot badan, bobot ovarium, bobot uterus dan kadar hormon reproduksi berupa estrogen dan testosteron. Analisis data menggunakan metode Independent Samples T-Test dengan selang kepercayaan 95%. Hasil penelitian menunjukkan peningkatan bobot badan, bobot ovarium, dan bobot uterus kelompok perlakuan lebih tinggi dibandingkan dengan kelompok kontrol pada umur 42 hari. Pemberian fitoestrogen diduga dapat memberikan pengaruh berupa peningkatan estrogen dan testosteron yang terjadi pada umur 42 hari.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Estrogen, Ovarium, Phytoestrogen, Prepuberty, Tempe extract, Uterus

Judul: Peran Pemberian Ekstrak Tempe terhadap Organ Ovarium dan Uterus Tikus Betina Prapubertas
Abstrak: This research was conducted to study the potential of tempe phytoestrogen to the reproduction performance in female rats (Rattus norvergicus). There were 18 of 21-days old of female rats were divided into two groups, which were control group without given tempe extract and treatment group that has been given the tempe extract with a concentration of 0.25 gr everyday at the the age of 21-days old until 48 days-old. The female rats were sacrificed at the age of 28th, 42nd and 56th days-old to collect the samples of blood, ovarium and uterus. Parameter measured were the rate of estrogen hormone, wet and dry weight, water content, total of DNA and total of RNA. Data were analysed using Independent Samples T-Test method with 95% confidence interval. Result showed the increasing of wet and dry weight of ovarium and uterus in treatment group at the age of 42 days but there was no influence on the total of DNA and RNA of organs.
Keyword: estrogen, ovarium, phytoestrogen, total of DNA and RNA, uterus

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