Reducing chemical use for suppressing internal and external parasites of livestock is essential for protecting environmental health. Although plant condensed tannins are known to suppress gastro-intestinal parasites in small ruminants, no research on the effects of tannins on external arthropod populations such as the house fly, Musca domestica L., have been conducted. We examined the impact of...

The South African mining industry has been the backbone of the country’s economy for much of the past century. Mining has, however, often caused the degradation of productive soils. The amendment of these soils is often very expensive and often not sustainable. The University of Pretoria in cooperation with Eskom TSI, has over the past seven years conducted a series of trials. These trials have...

2 What is your aim in phylosophy? To show the fly the way out of the fly-bottle.

China has one of the largest coal mining industries in the world. Electricity in this country is mostly generated by coal-fired electric power plants. These plants produce huge amounts of ash each year. In 1988, Shanghai city alone produced nearly 1.8 million tons of ash. During the last two decades, a substantial amount of research work conducted by the Shanghai Research Institute of Building ...

A comparative analysis on the physical nature of the fly ashes, obtained from three thermal power plants, situated in West Bengal, India is presented in this work. The particle size of the fly ash samples are estimated, and their morphology and compositional analysis are made. These samples are crystalline, and the major components are mullite and quartz. Quantitative magnetic characterizations...

Batch experiments were conducted to test the effects of various solution properties, such as pH, temperature, initial concentration and anoxic and aerobic atmosphere, on Cd removal by nanoscale zerovalent iron (nZVI) supported on industrial coal fly ash. Cd (II) could be removed by adsorption on fly ash-nZVI in a very short time (5 min) with high removal rates (greater than 99.9%) over a wide r...

What is fly ash? Fly ash consists of the lighter particles that travel up from the coal furnaces during combustion. Bottom ash is the heavier particles that cling to the sides of the furnace and do not escape during the burning of coal. Fly ash particles range in size from 1 to 100 micrometers in diameter (EPRI, 2009) and are comprised of silica, alumina, calcium oxides and iron oxides (EPRI, 2...

Analysis of field data collected over several years in three poultry housing systems (narrow caged-layer houses, high-rise caged-layer houses, and broiler-breeder layer houses) indicated that the baited jug-trap was a reliable method of sampling house flies, Musca domestica L.; sticky ribbons provided additional information on two other fly species. Relative frequency of house fly capture indic...

Consider the question of assigning a probabilistic valuation to a statement as "Tweety (a particular bird) is able to fly". We suggest that a natural way to proceed is to rewrite it as "a (randomly chosen) bird with the same observable properties of Tweety is able to fly", and consequently to assume that the probability of "Tweety is able to fly" is equal to the percentage of the past observed ...

Chemical insecticides produce the risk of developing pest resistance, side effects to non-target species, and long lived residues in the environment. Generalist Predators can be effective agents of bio-control against Musca domestica L. (house fly). Spiders, particularly assemblages of species, have been shown to be effective in reducing pest insects. Common house fly catcher (Plexippus petersi...