Judul: Modifikasi dan uji teknis kolektor surya parabola silinder sederhana untuk sistem pendingin jet uap
Abstrak: Energi radiasi surya merupakan salah satu sumber energi yang cukup tersedia banyak di Indonesia. Pengembangan pemanfaatan energi surya sangat diharapkan, sehingga potensi ini dapat digunakan untuk membantu penyediaan energi di daerah-daerah terpencil dan kepulauan yang belum terjangkau aliran listrik PLN di Seluruh Indonesia. Pemanfaatan energi surya di Indonesia untuk sistem pendinginan masih sedikit sekali. Dalam rangka pengembangan pemanfaatan energi surya untuk pendinginan di Laboratorium Energi dan Listrik Pertanian dilakukan penelitian pemanfaatan Energi surya dengan kolektor surya parabola silinder untuk sistem pendingin jet uap. Penelitian ini bertujuan untuk menentukan penampilan kolektor surya parabola silinder sederhana untuk pembangkit uap sistem pendingin jet uap. Kolektor yang digunakan dalam percobaan ini adalah kolektor surya parabola silinder rancangan Masroni (1986) yang dimodifikasi dengan menambahkan unit pre heater. Pengujian yang dilakukan meliputi pengujian tanpa mengguna..dst
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Judul: Rekayasa dan Uji Kinerja Kolektor Surya parabola Tipe Silinder untuk Sistem Pendinginan Jet Uap
Abstrak: Konsumsi energi di Indonesia saat ini nasih didominasi oleh cnergi konvensionai, sementara krisis energi yang rneianda dunia sejalc awn1 abad ke-20 telah inendorong nanusia unruk inengelnbangkan sumber energi airernatif yang bertujuan mengurangi ketergantungan pada pemakaian energi konvensional.
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Judul: Effects of Alcohol Consumption on Spatial Memory Performance and Neuron Complexity
Abstrak: Alcoholic beverages have always been a common drink all around the globe. The ethanol that is contained inside these alcoholic beverages have been known to have various negative side effects to the brain if consumed excessively. Other articles have claimed a certain moderate amount of alcohol consumption could have beneficial effects on the brain, but no exact concentration limit of consumption has been elaborated to cause damage in the hippocampal area. The objective of this research is examining the effects of alcohol towards neuron complexity and spatial memory performance. Four groups of mice were used as test subjects and were given the solution pre-orally. The first group is the control group which is given water, the second group was given 5% alcohol, the third group was given 15% alcohol, and the fourth group was given commercially sold alcoholic beverage. The mice were given said solutions in the span of 30 days. Spatial memory performance is observed by how a mice scores inside a Y-maze in the span of 5 minutes after 30 days of treatment. Neuron complexity is determined by the number of intersections of dendrites and the maximum angle of neurons inside the Dentate Gyrus (DG) and Cornu Ammonis (CA) region of the hippocampus which is observed by Golgi-Cox staining, photographed with optilab and then analyzed using the ImageJ application. alcohol consumption does not have any significant effect on spatial memory performance nor neuron complexity in the hippocampal area. These findings are not significantly different than the control group, possibly because the treatment is not chronic enough to trigger a significant physiological change.
Keyword: Ethanol, spatial memory, complexity, hippocampus