Judul: Penerapan Sistem Akuisisi Data Otomatik pada Bioreaktir Studi Kasus : Kajian Penentuan Waktu Campur pada Larutan Karboksi Metil Selulosa di dalam Bioreaktor MSJ - U2 - 30 L
Abstrak: Sejalan dengan perkembangan bioteknologi yang pesat dalam dua dasawarsa terakhir, teknologi mikroprosesor juga telah mengalami kemajuan yang sangat pesat. Dengan menggunakan teknik interfacing dapat dilakuan penghubungan antara mikrokomputer dengan peralatan yang digunakan dalam prosesproses bioteknologi, terutama bioreaktor, untuk pemantauan dan pengendalian proses secara otomatik.
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Judul: Rancang bangun sistem penyimpan data otomatis dan pengembangan perangkat lunaknya
Abstrak: Penelitian mengenai kondisi lingkungan laut secara in situ dan kontinyu masih relatif sedikit dilakukan Salah satu penyebab utama masalah tersebut adalah cara pengukuran yang pada umumnya masih bersifat manual sehingga membutuhkan tenaga, waktu dan biaya yang besar. Salah satu alternatif pemecahan permasalahan tersebut adalah dengan menggunakan instrumen data logger. Instrumen data logger dapat mengukur parameter laut secara otomatis serta mampu menyimpan data hasil pengukuran Instrumen data logger juga dapat diatur untuk melakukan pengukuran pada interval waktu tertentu selama jangka waktu yang relatif lama. Pada saat ini, instrumen data logger mempunyai kemampuan untuk menyimpan data dengan kapasitas penyimpanan yang cukup besar serta ketelitian yang relatif tinggi. Hal tersebut didorong oleh perkembangan teknologi yang cukup pesat dan peningkatan kemampuan komponen rangkaian terintegrasi (IC) yang semakin besar sehingga menghasilkan kualitas data logger yang semakin baik. Sistem penyimpan data otomatis dengan multitransduser (SPDO/Mx) merupakan suatu alat yang mampu mengubah tegangan analog dari beberapa jenis sensor yang dapat diubah menjadi data digital serta merekam data tersebut dalam RAM selama beberapa waktu. SPDO/Mx ini terdiri dari beberapa bagian yang merupakan suatu kesatuan, yaitu transduser, multiplexer, ADC, RAM, paritas, dan Mikrokontroller. ...
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Judul: Phylogeography and Species Limits in the Papuan White Snake (Micropechis ikaheka) (Reptilia: Serpentes: Elapidae)
Abstrak: Papua white snake, Micropechis ikaheka, has been distingushed into two subspecies M.i. ikaheka and M.i. fasciatus. However, due to lack of data on their morphology, distribution and ecology, both subspecies often ignored in scintific discussions and refers only byas , Micropechis ikaheka. This study was designed to document the differences between M.i. ikaheka and M.i fasciatus by using scales characteristics and reproductive organ or hemipenes. The study also examine, zoogeography, habitat, diet and cannibalism of both subspecies to better understanding the the ecology of one of the most venomous snakes in the world. This study consists of three topics with method and also different in the size samples, respectively. The first study is the histology and microtopography of the skin were studied using paraffin method and Scanning Electron Microscope (SEM). The second is the hemipenis were examined by following Myers and Cadle (2003), and Zaher and Prudente (2003). The third is the abdominal surgery was carried out to document diet type and the investigate phenomenon of cannibalism in the snake. Specimens for this study came from the collection from Museum Zoologicum Bogoriense (MZB) and Universitas Negeri Papua’s Laboratory (LZU). The research result also indicated that the markers of skin and hemipenis described the same structure and microornamentation in all M. ikaheka groups being compared. Based specimens examined morphological descriptions do not s support the further differentiation in Micropechis. In short, two markers that used in this study could not sufficiently indicate the differences in the level of species and subspecies of M. ikaheka. The study, however, were able to delineate zoogeography and skin color patterns, which fall into four groups: M. i. ikaheka; M. i. fasciatus. M. i. ssp. “intermediate”; and M. i. ssp “black”. This study also revealed that color variations did not overlap in their geographic distribution. It is therefore, it suggested that environmental factors may contribute to the skin color variations. It also assumed that habitat discontinuous and biogeography factors may also cause the loss of the connection between the original populations (vicarians) or follow colonization events (dispersal). The examined of 22 stomach contents of M. ikaheka shows this species is carnivorous, and prey on vertebrates such as amphibians, fish, reptiles, and Mammals. These snakes are opportunistic predators since they prey on all that can be captured, but mainly reptiles (61.5%), followed by mammals and fish (both 15.4%), and amphibians (7.7%). Although categorized as terrestrial animal, the diet study showed that M. ikaheka snakes often go into the water to hunt for fish (the sample from Yapen island), including eel (the sample from Aru island). Based on prey items indentified, there is evidence that M. ikaheka is cannibal. At this time, there still no record on reason for cannibalism, but it is assumed that cannibalism was due to competition between populations and means to control population.
Keyword: geographic variation, white snake, papua