Abstract The use of renewable energy from wood biomass which is processed in the form pellet are environmentally friendly, sustainable and also to reduce greenhouse effect environmental pollution. main problem quality a Gliricidia Calliandra ash content (1%) has not fulfilled Europe standard requirement A1-EN14961 (ash ≤ 0.7%) yet fulfills A2-EN14961 standard. effort lower by debarking mixing w...

Thousand cankers disease, caused by the walnut twig beetle (Pityophthorus juglandis Blackman) and an associated fungal pathogen (Geosmithia morbida M. Kolarík, E. Freeland, C. Utley, and N. Tisserat), threatens the health and commercial use of eastern black walnut (Juglans nigra L.), one of the most economically valuable tree species in the United States. Effective phytosanitary measures are ne...

The increasing consumption of Phytomedicine in Nigeria has led to a continuous use of plant parts. There is therefore an uncontrolled harvesting of plant parts from the wild. There are many trees showing various degrees of debarking while some regrown barks were equally re-debarked. The pattern of debarking and regrowth and its implication on the quality of tree barks in phytomedicine and the d...

We compared three detection methods for two larval parasitoids introduced the control of emerald ash borer (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae): Tetrastichus planipennisi Yang (Hymenoptera: Eulophidae) and Spathius galinae Belokobylskij Strazanac Braconidae). The were 1) debarking lower 2 m trees, 2) yellow pan traps (YPT), 3) sentinel logs containing manually inserted...

Chemical coagulation is commonly used in raw water and wastewater treatment plants for the destabilisation of pollutants so that they can be removed in the subsequent separation processes. The most commonly used coagulation chemicals are aluminium and iron metal salts. Electrocoagulation technology has also been proposed for the treatment of raw waters and wastewaters. With this technology, met...

Public agencies tackling the issues of natural resource management need objective analysis to anticipate the ecosystem consequences of their actions. Mathematical models can be regarded as an effective tool to support decision makers in this context because of their predictive capacity and of their ability to describe complex natural systems. In particular, the aim of this paper is to show how ...