Multivariate time series (MVTS) models are helpful to examine the relationships among many macroeconomic variables of a country. They give us information about the effect of time on some variables and the effect of one ...

In this work the concentration of selected trace metals (Cu, Co, Cr, Cd, Ni, Mn and Zn) were determined in the water, water hyacinth plant and sediment core samples from Aba Samuel reservoir - artificial lake, 37 km south ...

Tannery wastewaters contain high levels of organic matter, nitrogenous compounds, sulfides and other pollutants. These pollutants can cause undesirable effect on the ecosystem and public health. In Ethiopia most of leather ...

Understanding the nature of wastewater is fundamental for the design of appropriate wastewater treatment plants and the selection of effective treatment technologies. The objective of the study was to develop biological ...

Phosphorus is the limiting nutrient in most freshwater systems, and when found in excess, it can accelerate eutrophication. Eutrophication causes algal blooms, aquatic plant growth, taste, odor problems and oxygen depletion ...

Fluoride primarily produces effects on skeletal tissues (bones and teeth) and has a narrow range between intakes that cause beneficial and detrimental health effects. Elevated levels of fluoride (>1.5 mg/L) in the drinking ...

In this study, simple, cheap, fast, and portable microfluidic paper-based analytical devices (μ-PADs) were developed and used for chromium (Cr) and copper (Cu) assay in environmental samples. The μ-PADs were prepared for ...

Biological invasion by alien invasive species is now recognized as one of the major threats to native species and ecosystems. P. hysterophorus is believed to have been introduced to Ethiopia during the1970s along with the ...

The diversity, relative abundance and some aspects of the biology of fish species in Lake Abaya were studiedfi'om August to September 2015. One thousand forty three (1043) fish speciemns were collected using gil/nets of ...

Absence or presence of limited data about the quantity and composition of solid waste is one of the reasons for poor solid waste management in Addis Ababa. Domestic solid waste quantity and composition analysis is one ...