Organochlorine Pesticides in Soils of Municipal Solid Waste Dumpsites in Delta State: Spatial and Seasonal Variations, Potential Risks and Sources

This study assessed the spatial and seasonal variations, potential risks and sources of organochlorine pesticides in municipal solid waste dumpsites (MSWDs) in Delta State. Soil samples were obtained from twenty-seven MSWDs in Delta State. Soil samples were extracted with hexane/dichloromethane and cleaned up in a column of silica gel and florisil. The OCPs in the extracts were quantified with a gas chromatograph-mass spectrometry (GC-MS). The ∑20 OCPs levels in the soils varied between 0.74 and 7.29 ng g-1for the dry season and from 0.09 to 9.47 ng g-1 for the wet season.

Histological Changes in the Heart and Aorta of the Adult Wistar Rat Following Exposure to Cement Dust

The heart is a vital organ of the body that pumps blood through the aorta and its branches which provide blood flow to all organs and tissues of the body. Any injury causes distortion of the smooth functioning of the cardiovascular system. This study investigated the histological changes in the heart and aorta of Wistar rats following exposure to cement dust. Twenty-four (24) Wistar rats weighing between 250 g and 280 g were divided into 4 groups of 6 rats per group.

Taxonomic Significance of Leaf Epidermal Attributes of some Herbaceous Species of Euphorbia L. (Euphorbiaceae) in Nigeria

Foliar epidermis of six species of Euphorbia Linn. in Nigeria was studied with the aim of ascertaining reliable characters for easy identification, delimitation and indicating relationships among species. Light microscopy was employed to evaluate leaf surface features such as shape of epidermal cell, stomata and trichome and their distribution frequency. Epidermal shapes are variable i.e. polygonal, irregular and undulate. Stomatal complex types include anomocytic, anisocytic, paracytic, diacytic were encountered. Diacytic stomatal complex was observed only in E. heterophylla and E.

Various parts of Moringa oleifera ameliorate Phenylhydrazine-Induced Spleen toxicity in Male Wistar Rats

The toxicity of sickle cell anaemia maintenance drugs makes medicinal plants viable alternatives. The protective roles of Moringa oleifera (MO) parts (Bark, flower, leaf, root and seed) against phenylhydrazine (PHZ) induced spleen toxicity and oxidative stress in rats were carried out. Splenomegaly was observed in anaemic rats and was reversed by M. oleifera parts, particularly the flower and roots. The M.

Effects of Aqueous Leaf Extract of Cymbopogon citratus on Cement Dust-Induced Interstitial Pneumonitis in Adult Wistar Rats

Inhalation of cement dust is the most important cause of respiratory diseases among people with cement dust related occupations such as cement factory and transporting workers, construction labourers, brick masons, concrete finishers, plasterers, steel erectors et cetera. This study aimed to investigate the effects of aqueous leaf extract of Cymbopogon citratus on cement dust-induced lung damage in the adult Wistar rats. Thirty (30) adult Wistar rats weighing between 240 g and 270 g were divided into five (5) groups of six (6) rats per group.

Impacts of Egg Diets on the Culture of Clarias gariepinus Fry in Indoor Hatchery

The use of egg diets and fish meal as a starter diets for Clarias gariepinus fry after endogenous feeding was investigated for 42 days. The experiment was designed to determine the effects of egg diets on growth performance of C. gariepinus. The experimental diets were assigned into three treatments and control.

Antioxidant Enzyme Activities of the Leaves of Groundnut (Arachis hypogeae L.) Planted on Crude Oil-Contaminated Soil

ABSTRACT: Antioxidant enzyme activity of groundnut leaves planted in crude oil contaminated soil was evaluated. 1.5 kg of soil each was placed in black polythene bags. They were divided into four groups (A-D) of five bags each. Each group was treated with different concentrations of crude oil (0 ml, 5 ml, 10 ml and 15 ml per 1.5 kg soil respectively). five seeds of Arachis hypogaea were planted in each bag.