13 articles in this issue
Heru Dwi Wahjono
In order to manage region water resources, Samarinda City has been collecting and managing all data of water resources. Good data management for water resources is needed to maintain water potential and suplay for this city and to control water quality fr... see more
Agung Riyadi
Pumping test are carried out to determine how much groundwater taken from a well and what effects pumping will have on the aquifer. Theis recovery method aims to find out the aquifer characteristics such as transmisibility and permeability values. This me... see more
Arif Dwi Santoso
The result of phosphate analysis in Hurun Bay Lampung described thatconcentration phosphate in the West season was greater than in the East season. In the February 2003, phosphate concentration was 9.51±1.54 ì g/L while in July 2003 around 6.32±3.8 ì g/L.... see more
Muhammad Mansur
Ecological studies on the Durian (Durio spp.) in Intuh Lingau District, East Kalimantan Province was conducted on December 2005. One plot (0,6 ha) was establised at durian habitat for vegetation analysis. As the result, the forest type is secondary forest... see more
Indriyati Indriyati
Fixed Bed Anaerobic reactor that use support material from bamboo ings can be used as waste water biological treatment without oxygen inside reactor. On the experiment that use soybean sauce waste waterwith high organic content.According to the experiment... see more
Wage Komarawidjaja
The objective of this study is to understand the performance of microbial degradation activities in textile wastewater treatment unit. Result of BOD, COD, DO and microbial measurement indicated that DO concentration in activated sludge wastewater treatmen... see more
Euthalia Hanggari Sittadewi
Eceng gondok (Eichornia crassipes (Mart)(Solms) is a floating plants that creates problems on the maximum of waters utilization. On the other side, eceng gondok is a potential organic matter that can be used for a growing media. The utilization of the org... see more
N. Saribanon
Residential solid waste is being a critical problem in many cities including Jakarta. Community-based management is the most important strategy even when sophisticated treatment such as bio-energy or waste industrial park would be implemented soon, as eve... see more
Achmad Hidajat Effendi
This research aims at investigating the effectiveness of fire retardant siliceous based materials which is made of natrium silicate (Na2SiO3.2H2O). Factors related to selection of mixed composition with respect to fire such as the easiness in processing o... see more
Muhammad Ansorudin Sidik
The diffusion of Waste Management System to the society should be followed by the change of not only their knowledge and attitude, but also their behavior. To find out the effects of the diffusion to the society, some measurements can be used. These are t... see more
Tahan Uji
Study on richness diversity plants in Kakenauwe Nature Reserve and Lambusango Game Reserve had been conducted. One hundred and seventy species of Spermatophyta, 12 species of Pteridophyta and 24 species of Bryophyta are collected from this area. One hundr... see more
Achmad Hasan
Fuel cell is a device which is purposed to convert chemical energy into electric energy and produce water as side result. Fuel cell technology doesn’t produce emission and doesn’t make noises and also as environmental friendly energy has a high efficiency... see more
Ikhwanuddin Mawardi
One million hectare peat land development project in Central Kalimantan Province has been conducted based on Presidential Instruction, Number 80, 1998 dated June 5, 1995 for Foot Sustainability and followed by Presidential Degree, Number 82, 1995 dated fo... see more