4

Compositional Pattern and Human Exposure Risk of Polycyclic Aromatic Hydrocarbons (PAHs) in Fine Dust from Indoor Environments in Port Harcourt, Nigeria

Indoor fine dusts in residential buildings, public buildings and vehicles from Port Harcourt, Nigeria were assessed for their polycyclic aromatic hydrocarbons (PAHs) concentrations, compositional patterns, and human exposure risks. The PAHs in the dust samples were quantified by gas chromatograph equipped with mass spectrometry (GC-MS) after extraction by ultra-sonication with hexane/dichloromethane/acetone and cleaned up on a silica gel/alumina column.
AuthorName(s)
Michael Kambi
Leo C. Osuj
Mudiaga C. Onojake

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.
AuthorName(s)
Efe Ohwo
Godswill O. Tesi
Lawson Onojake
Austin Ojakovo
Onoriode O. Emoyan
Temi E. Akporhonor

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.
AuthorName(s)
Ehi-Omosun
Mabel Bilu and Olise
Nkechi Augustina

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.
AuthorName(s)
Sanusi Ajoke Saidat
Aina Sulaiman Adebisi
Ashidi Joseph Senu
Omotoye Olorode
Feyisola Roseline Tolulope
Adewusi Kayode Matthew
Oluwabiyi Bolatito Adetoro
Okechukwu Olaitan Chinenye
Senjobi Comfort Titilayom
Akinloye Akinwumi Johnson
Ajiboye Olujoke Florence
Agbolade Oluwaseun Anuoluwapo

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.
AuthorName(s)
Adedayo T. Olukanni
Joseph B. Minari
Joy Okpuzor

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.
AuthorName(s)
Mabel Bilu Ehi-Omosun
Victor Damilola Olotu

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.

AuthorName(s)
Adebola Oluyinka Ajiboye
Oluwatoyosi Aduragbemi Oyebode

Effects of Graded Levels of Craseonycteris thonglongyai Dung on the Concentration of Amino Acids in the Leaf of Cnidoscolus aconitifolius (Tree Spinach)

ABSTRACT: This research work determines the levels of amino acids in Cnidoscolus aconitifolius as influenced by graded levels of Craseonycteris thonglongyai dung. The effect of applied C.

AuthorName(s)
Abdulwasiu B. Lawal
Musa Amanabo
Abduljelili Uthman
Mary L. Abu
Subscribe to 4