Judul: Pengembangan dan implementasi web GIS kampus IPB Darmaga
Abstrak: Bogor Agricultural University, one of universities in Indonesia, has 4 campusses : Dramaga, Baranangsiang, Cilebende, and Gunung Gede. IPB Dramaga Campus (IDC), that be a concern object here, is a wide area campus with identical form building. Searching a room at IDC could be difficult. A dynamic and accesible Geographic Information System of IDC can be considered as a solution. Some previous researches concerned with the same issue. One of them is Web-based GIS of rooms at IPB Campus with Dynamic Mapfile Configuration Using MapServer and Pmapper (Isriana 2008). None of them have been published yet, hence could not be utilized. The objective of this research is developing and implementing Geographic Information System (GIS) of IDC on Linux-OS. By utilizing an open source operating system and PostgreSQL with PostGIS extension made current research different from those of previous researches.
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Judul: Sistem informasi geografis pencarian ruang kuliah kampus IPB Darmaga
Abstrak: IPB has the building architecture which is almost equal to a fairly wide area and sometimes a lot of academicians are confused and have difficulty in finding the intended lecture room. In this research, we built a web-based system using the system development life cycle which presents geographic information that can help facilitate the academicians in search of lecture room at IPB. The geographic information system is built using Pmapper. The results of this research is a system which displayed room information in a table with function of filtering, searching, paging, delete, edit, add data, and in the form of a map with the features on Pmapper with function of coordinates, legends, searching, zooming to extents, back, forward, zoom to selected, zoom in, zoom out, pan, identify, select, tool tip, refresh folder, point of interest, download, and export to CSV / PDF. Based on the test results, this system has worked well in accordance to the user needs to facilitate them in searching lecture room at the IPB Darmaga campus.
Keyword: geographic information system, MapServer, Pmapper, PostGIS

Judul: Mercury Toxicity and It’s Effect on Histopathology Change of Nile Tilapia (Oreochromis niloticus).
Abstrak: Nile tilapia (Oreochromis niloticus) is one of fish species that oportunity to contaminated with mercury. The effects of pollutants can damage living organisms organs and can cause death. The effects caused mercury had acute or chronic character. The aims of this study are to determine threshold and acute toxicity of mercury chloride (HgCl2) of Nile tilapia (Oreochromis niloticus), to assess the effect of mercury chloride (HgCl2) on several biometric parameters (survival, growth rate of average daily weighted, liver condition, bile and reproductive variability of Nile tilapia (Oreochromis niloticus), assess the level of damage to the histological structure of the gills, liver and kidney of Nile tilapia (Oreochromis niloticus) caused mercury chloride (HgCl2) exposure. This study was conducted from February to June 2013. Nile Tilapia (Oreochromis niloticus) were used in this study were female with average weight 20 grams or 11-13 cm length range. Toxicant materials used in this study was mercury chloride (HgCl2). Fish were reared in each aquarium 60x40x30 containing 48 liters of water. This study consists of three stages: a preliminary test, acute test, and sub-chronic test. To determine the changes in biometric condition of tilapia approximated by measuring the survival rate (SR), the growth rate of average daily weight , the content of mercury in the fish organs, hepatosomatic index (HSI), the relative bile volume (VER), gonadal soamtic index (IKG), fecundity and oocit diameter, tissue damage caused by mercury in fish organs by making histological preparations stained with hematoxylin and eosin. The median lethal concentration (96 hr, LC50) of Mercury Chloride was calculated as 1,64 mgL--1.The survival rate was highest in the control treatment (46,67 %) . Mercury chloride with concentration 0.196 mgL--1 show significant effect to changes HSI and relative bile volume, and oocyte diameter of Nile tilapia (p < 0,05). Mercury chloride with a concentration of 0,164 mgL-1 and 0,196 mgL-1 have not a significant effect on the growth rate of weight, gonadal somatic index and fecundity of Nile tilapia (p > 0,05). Mercury chloride cause damage to gills (hyperplasia, hypertrophy, proliferation and neukrosis), liver (hyperplasia, hemorhage, shrinkage of hepatocytes, proliferation and neukrosis) and kidney (hyperplasia, hemorrhage, shrinkage of the glomerulus, proliferation and neukrosis).
Keyword: Nile tilapia, Hepatosomatic indexs (HSI), histopathology