Judul: Jumlah Escherichia coli dalam Kulit Ayam Pedaging Asal Tempat Pemotongan dan Tempat Penjualan di Wilayah Bogor
Abstrak: Tujuan penelitian ini adalah menghitung jumlah Escherichia coli dalam kulit ayam pedaging di tempat pemotongan dan tempat penjualan di wilayah Bogor. Jumlah kulit ayam yang dijadikan sampel dalam penelitian ini sebanyak 48. Jumlah Escherichia coli dihitung menggunakan metode Most Probable Number (MPN). Data yang diperoleh dianalisis secara deskriptif. Hasil menunjukkan rata-rata jumlah Escherichia coli dalam kulit ayam pedaging di tempat potong ayam adalah 749.0±16.4 MPN/g, rumah potong ayam 928.0±198.7 MPN/g, pasar swalayan 643.0±170.3 MPN/g, pasar tradisional 940.0±204.3 MPN/g. Rata-rata jumlah Escherichia coli berdasarkan bagian kulit ayam di dada atas adalah 873.3±163.9 MPN/g, dada bawah adalah 770.0±255.2 MPN/g, punggung atas adalah 677.8±115.5 MPN/g, punggung bawah adalah 938.9±188.2 MPN/g. Jumlah Escherichia coli tertinggi berasal dari pasar tradisional dan bagian kulit area punggung bawah. Jumlah Escherichia coli di atas ambang batas cemaran maksimum yang telah ditetapkan.
Keyword: Escherichia coli, jumlah MPN, kulit ayam pedaging

Judul: Identifikasi cemaran escherichia coli pada daging ayam yang dijual di pasar tradisional dan pasar modern daerah Bogor Barat
Abstrak: The aim of this research was acknowledge about contaminated chicken meat from Eschericia coli which sold in traditional market and modern market. About two traditional markets and two modern markets where the samples were takenly for thirteen times, frequently once for a week. The research used Gram colouring test and biochemical test (IMViC test). Result of Gram colouring test shown that all the samples from both of traditional markets and both of modern markets was Gram negative bacterian, from IMViC test, all samples from both of traditional markets and both of modern markets were negative from Indol test and Red Metil test and positive from Voges Proskauer test and Sitrat test. Otherwise, from the result of Gram colouring test and IMViC test, bacteria which was found in thirteen samples from both of traditional and modern markets was not Eschericia coli.
Keyword: Escherichia coli, chicken meat, traditional markets, modern markets.

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