Telogen effluvium: A review of the literature

Telogen effluvium is one of the most common causes of alopecia. It is a scalp disorder characterized by excessive shedding of hair. Several factors such as drugs, trauma, and emotional and physiological stress can lead to the development of telogen effluvium. Multiple alterations in the hair cycle have been proposed as the underlying mechanism. Telogen effluvium can present as acute or chronic hair fall with symptoms such as trichodynia. Diagnostic tests that can be used include hair wash test, trichogram, phototrichogram, and scalp biopsy. In the treatment of telogen effluvium, it is essential to identify and remove the causative factors and to use drugs such as corticosteroids, minoxidil, and novel treatments such as CNPDA (caffeine, niacinamide, panthenol, dimethicone, and an acrylate polymer). Herein, we discuss the presentation, diagnostic approaches, and effective treatment options available for telogen effluvium

Review of Groundwater Potentials and Groundwater Hydrochemistry of Semi-arid Hadejia-Yobe Basin, North-eastern Nigeria

Understanding the hydrochemical and hydrogeological physiognomies ofsubsurface water in a semi-arid region is important for the effective management of water resources. This paper presents a thorough review of thehydrogeology and hydrochemistry of the Hadejia-Yobe basin. The hydrochemical and hydrogeological configurations as reviewed indicated that the Chad Formation is the prolific aquifer in the basin. Boreholes piercing theGundumi formation have a depth ranging from 20-85 meters. The hydrochemical composition of groundwater revealed water of excellent quality,as all the studied parameters were found to have concentrations withinWHO and Nigeria’s standard for drinking water quality. However, furtherstudies are required for further evaluation of water quality index, heavy metal pollution index, and irrigation water quality. Also, geochemical, andstable isotope analysis is required for understanding the provenance of salinity and hydrogeochemical controls on groundwater in the basin

Testing Techniques Selection: A Systematic Approach

ABSTRAC

On unsteady two-dimensional and axisymmetric squeezing flow between parallel plates

AbstractSqueezing flow of a viscous fluid is considered. Two types of flows are discussed namely, the axisymmetric flow and two dimensional flow. Similarity transform proposed by Wang (1976) [13] has been used to reduce the Navier–Stokes equations to a highly non-linear ordinary differential equation which jointly describes both types of flows. Solution to aforementioned ordinary differential equation is obtained by using Variation of Parameters Method (VPM). VPM is free from the existence of small or large parameters and hence it can be applied to a large variety of problems as compared to the perturbation method applied by Wang (1976) [13]. Comparison among present and already existing solutions is also provided to show the efficiency of VPM. A convergence analysis is also carried out. Effects of different physical parameters on the flow field is discussed and demonstrated graphically with comprehensive discussions and explanations

DISTRIBUTION OF PUBLIC WATER SUPPLY: ANALYSIS OF POPULATION DENSITY AND WATER SUPPLY IN KEBBI STATE, NORTHWESTERN NIGERIA

Development and management of an improved water supply system is a great challenge faced by most developing nations. With rapid population growth and urbanization most, states in Nigeria find it difficult to deliver potable water to a substantial number of people who are in dire need for this resource, especially in the Urban areas. In this study, we attempt to relate public water supply to population density in Kebbi State. An inventory of water supply facilities was taken in 21 Local Government Areas (LGAs) in Kebbi State. Census data was collected from the National Population Commission (NPC), Birnin-kebbi. Results showed that, population density correlates very strongly and positively with handpumps (r=0.95), urban schemes (r=0.88), semi-urban schemes (r=0.69) and village scheme (r=0.74). There was a very weak but positive correlation between population density and boreholes (r=<0.001); population density and tabs (r=<0.001). PCA results showed, that the 21 LGAs cluster nicely across a spectrum of public water supply infrastructure. The ratio of persons to water sources is thus: Borehole 1:12794.1; Handpumps 1:7640.2; Taps 1:2821.8; Urban scheme 1:233799.6; Semi-urban scheme 1:63739.7; and Village scheme 1:67245.9. Suggesting that, the existing public water supply facilities are inadequate. More water supply infrastructure is needed to provide people with improved water supply. However, there are no statistics on private boreholes and people depending on them in Kebbi State. An inventory of private water supply sources in Kebbi State is recommended. This will guide policy regarding improved water supply in Kebbi State.  Article visualizations