The widespread use of genetically modified crops has precipitated acrimonious debate on the health effects, environmental safety, and ethics of genetically modified agricultural species. The debate is contentious, often with unsubstantiated claims of both potentially harmful and beneficial effects. Here we examine the possible effects of GM agriculture on issues of the environment and biodivers...

In Nigeria irrigated agriculture is an important tool for economic growth, food security, and poverty reduction during dry periods of rain-fed agriculture. The concentration and composition of dissolved constituents in water determines its quality for irrigation use. Water quality studies strongly suggest that agriculture is a leading source of water quality problems, due to pesticides and othe...

The current and expected growth of the world's population warrants an increased production of high-quality animal protein. Dairy farming is regarded as one of the important ways of satisfying this need to meet the growing demand for milk, especially in developing countries. The focus on crossbreeding and increasing the productivity of dairy cattle has, besides enhanced milk production, also res...

background: male infertility is affected by several factors. lead is one of the heavy metals more bioavailable than usually modifies the sperm quality in humans. objective: the aim of this study was to establish the role of lead in semen quality in environmentally exposed men. materials and methods: semen and blood samples were obtained from two groups: the exposed group (eg=20) and the non-exp...

Exce l lence i n voca t i ona l educa t i on has become a ma jo r conce rn o f voca t i ona l educa to rs and the gene ra l pub l i c . T h e c a l l f o r e x c e l l e n c e has come a t a t ime o f r ap id soc ia l and t echno log i ca l change coup led w i t h f i e r c e c o m p e t i t i o n f o r p u b l i c f u n d s . These concerns have p laced add i t i ona l demands on voca t i ona ...

human activities in the fields of agriculture, municipal and industry introduce significant amounts of nutrients and organic materials into the rivers and streams resulting in their contamination. computer models such as qual2kw are used extensively for water quality management of rivers and streams. the qual2kw model is a one dimensional, non-uniform, steady water quality model, which has been...

The article analyzes the economic reasons behind the rise of Neolithic agriculture some 10,000 years ago in consideration of evidence that agriculture was not associated with increasing standards of living. On the basis of archeological and anthropological literature, the article presents a modelling framework that allows for four broad explanations to the agricultural transition; (i) environme...

Isotopic and nuclear techniques play an important role in food and agriculture, health and industry. In the agricultural sciences and food technology sectors, recent research has elucidated the new potential application of radiation for microbial decontamination, food preservation, improve the nutritional quality of  foods  and effectively utilise its potential as human food or animal feed. The...