Judul: Stephanofilariasis pada Sapi di Kecamatan Bungus Teluk Kabung Sumatra Barat
Abstrak: Prevalensi dari infestasi Stephanofilaria sp pada sapi sangat tergantung pada keadaan suatu daerah diantaranya kelembaban, suhu dan sistem pemeliharaan sapinya. Untuk mengetahui seberapa jauh infestasi Stephanofilaria sp serta penyebarannya pada sapi di Kecamatan Bungus Teluk Kabung, Sumatra Barat, telah dilakukan observasi secara klinis dan meneliti faktor lingkungan dan corak pertanian didaerah ici juga observasi terhadap infestasi lalat pada luka-luka serta pengobatannya.
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Judul: Prevalensi parasit darah (Babesia sp. Theileria sp.) pada ternak sapi rakyat di lima kecamatan, Kabupaten Lampung Tengah
Abstrak: Sampel darah diambil dari 178 sapi lokal (Bali, Peranakan Ongole, Brahman, Prambon dan Brangus) yang berumur 1-7 tahun di lima kecamatan wilayah Kabupaten Lampung Tengah Propinsi Lampung dari bulan Agustus 2001 sampai Maret 2002. Sampel darah diperiksa untuk mengetahui adanya parasit darah yaitu Babesia sp. dan Theileria sp. Sampel darah diwarnai dengan pewarna Giemsa dan diperiksa dengan menggunakan mikroskop. Hasil yang didapat menunjukkan bahwa hewan yang terinfeksi Babesia sp. dan Theileria sp. rata-rata sebesar 0,356 % dan 2,08%, dengan persentase sapi yang terinfeksi Babesia sp. paling tinggi ditemukan di Kecamatan Punggur yaitu sebesar 0,150% dan paling rendah di Kecamatan Seputih Mataram sebesar 0,026 %. Persentase sapi yang terinfeksi Theileria sp. paling banyak di Kecamatan Sendang Agung yaitu sebesar 0,845 %dan paling sedikit di Kecamatan Seputih Raman sebesar 0,144 %. Managemen diperkirakan faktor utama yang mempengaruhi prevalensi dibandingkan dengan faktor iklim….
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Judul: Resonance technique HHO generator for internal combustion engine
Abstrak: Application of HHO gas as fuel had been generaly used. Though there was still controversy regarding its efficiency and efectiveness . In this research, hydrogen that hopefully could become an alternative renewable energy was produced by the electrolysis process. HHO was the mixture of hydrogen gas and oxygen gas that was formed in HHO dry generator. In HHO cell (dry) generator contained 10 cells, and each cell required 2.4 voltage. Furthermore, resonance DC application was evaluated to gain the better electrolysis efficiency. The test was held by using 2 level of electrolyte consentration, 0.178 M KOH and 0.446 M KOH. Each concentration was tested by 3 size of inductors, 8uH, 40uH, and 100uH. Not only single frequency was used, but modulatedfrequency was used also as well. In order to measure the improvement of resonance techinique application, specific energy was compared between using resonance technique and conventionaltechnique.Specific energy was calculated between output (mass of hydrogen) and input energy (watt hour). In this test,input of specific energy was measured in two condition:energy from the source (total) and energy in HHO generator only. From the test, it could be concluded that modulated frequency, by using40 Hz and 2405 Hz frequency, 100uH inductor, and 0.446 M OH, only 61% of total specific energy that was used in HHO generator. It needed23.91 watt hour energy (total) to produce 1 gram of hydrogen gas.On the other hand, the worst performance was happened in single frequency, 11270Hz, 8uH of inductor, and 0.178 KOH, where the loss of specific energy was 82%. The conventional technique only loosed about 0.5% of specific energy in 0.178 KOH needed 51.37watt hour to provide one gram of hydrogen. The loss was happened due to the excess of current that was converted into head in MOSFET. Hopefully the further research will be held again by using wet type of HHO generator because dry generator did not have fixed capacity value and it maked difficulty for calculating the perfect resonance condition.
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