A Review of Stream Regimes Manipulation System Effects on Drainage Basin and Remedies

Naturally, a drainage basin harbours stream flow and channel characteristics in an open system. Urbanization effects on hydrological cycles and on stream morphology and dynamics, as in Anderson (1970) causes naturalized changes in channel characteristics as explained (Mrowka, 1974; Sehumm1977) and flood plain characteristics. These man’s efforts and their consequences draw several attentions to changing channel morphology and hydraulic geometry of stream channels by studies such as in Troxell and Leopold(1971), Hammer(1972), Knox(1977), Knight(1979), Morisawa and Vemure (1976), Morisawa and Laflurem(1979), Ebisemijiu (1989). Such situation reviewed in this paper have disturbed the entire watershed and channels as emaciated in the works of Simon (1992), Simon and Hupp (1992), Oyegun (1994), Church (1992), Pizzuto (1994), Elliot and  Gyetuai (1999)

Surface textured polymer fibers for microfluidics

This article introduces surface textured polymer fibers as a new platform for the fabrication of affordable microfluidic devices. Fibers are produced tens of meters-long at a time and comprise 20 continuous and ordered channels (equilateral triangle grooves with side lengths as small as 30 micrometers) on their surfaces. Extreme anisotropic spreading behavior due to capillary action along the grooves of fibers is observed after surface modification with polydopamine (PDA). These flexible fibers can be fixed on any surface - independent of its material and shape - to form three-dimensional arrays, which spontaneously spread liquid on predefined paths without the need for external pumps or actuators. Surface textured fibers offer high-throughput fabrication of complex open microfluidic channel geometries, which is challenging to achieve using current photolithography-based techniques. Several microfluidic systems are designed and prepared on either planar or 3D surfaces to demonstrate outstanding capability of the fiber arrays in control of fluid flow in both vertical and lateral directions. Surface textured fibers are well suited to the fabrication of flexible, robust, lightweight, and affordable microfluidic devices, which expand the role of microfluidics in a scope of fields including drug discovery, medical diagnostics, and monitoring food and water quality. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Surface Textured Polymer Fibers for Microfluidics

Cataloged from PDF version of article.This article introduces surface textured polymer fibers as a new platform for the fabrication of affordable microfluidic devices. Fibers are produced tens of meters-long at a time and comprise 20 continuous and ordered channels (equilateral triangle grooves with side lengths as small as 30 micrometers) on their surfaces. Extreme anisotropic spreading behavior due to capillary action along the grooves of fibers is observed after surface modification with polydopamine (PDA). These flexible fibers can be fixed on any surface - independent of its material and shape - to form three-dimensional arrays, which spontaneously spread liquid on predefined paths without the need for external pumps or actuators. Surface textured fibers offer high-throughput fabrication of complex open microfluidic channel geometries, which is challenging to achieve using current photolithography-based techniques. Several microfluidic systems are designed and prepared on either planar or 3D surfaces to demonstrate outstanding capability of the fiber arrays in control of fluid flow in both vertical and lateral directions. Surface textured fibers are well suited to the fabrication of flexible, robust, lightweight, and affordable microfluidic devices, which expand the role of microfluidics in a scope of fields including drug discovery, medical diagnostics, and monitoring food and water quality. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Petrological and structural evolution of basement rocks around Guga, Katsina State, northwestern Nigeria

Lithological characterization and structural assessments of basement rocks around Guga, Katsina State was carried out to understand their geologic evolution and deformational history better. Field and petrographic studies were utilized in characterizing macrostructural, textural, and mineralogical components. Migmatite, banded and augen gneisses, schist, quartzite, and granite constitute the major lithologic units in the study area. Migmatite and the closely related banded gneiss are recognized as igneous-derived metamorphic rocks of Eburnean to early Pan African. In contrast, the augen gneisses are metamorphosed analogues of earlier banded gneiss that were intensely deformed within a ductile shear zone during the middle stages of the Pan African. Similarly, the schist and interbedded quartzite were emplaced during this period, subsequently forming part of the Malumfashi supracrustal cover, related to simple ensialic graben-like structural development. The granitic intrusions represent the youngest rock units in the mapped area, resulting from the magmatic activity of the Pan-African orogeny. Structural analysis suggests the mapped area was affected by two-phase deformation events (D1 and D2). The D1 deformation represents a regional, fabric-forming compressional event, while D2 is a localized deformational event associated with the development of a local shear zone linked to the Kalangai fault system (KFS)

A survey on drug related problems in cervical cancer patients receiving chemotherapy in Ahmadu Bello University Teaching Hospital Zaria

A drug-related problem (DRP) is an event or circumstance involving drug therapy that actually or potentially interferes with desired outcome. The complexities in drug regimens used in cervical cancer chemotherapy has led to more serious problems. The aim of this study is to investigate DRPs in cervical cancer patients receiving chemotherapy. The study was a retrospective cross sectional study on patients receiving cervical cancer chemotherapy at Ahmadu Bello University Teaching Hospital Zaria (ABUTH). Patients’ medication charts were reviewed from July, 2015 to June, 2016. Data were collected using the Pharmaceutical Care Network Europe (PCNE) Classification of DRP V 6.20. A total of 224 DRPs cases were identified from 65 cervical cancer patients. The DRPs were mostly on treatment effectiveness (28.1%), adverse reaction (29.0%), and cost (26.8%), while the causes were majorly drug selection (28.1%) and dose selection (29.0%). The risk factors for the DRPs were found to be comorbidities and polypharmacy. In conclusion, DRPs were common among cervical cancer patients receiving chemotherapy at ABUTH. Pharmacist interventions to achieve a better therapeutic outcome are necessary.Keywords: Cervical cancer, chemotherapy, drug related problem, pharmacist, polypharmac

Economic development in urban Nigeria

The research in this report aims to contribute to a better understanding of urban economic development in the cities and towns in Nigeria. It considers: ■ The overall composition of the national, regional and local economies in the formal and informal sectors, and the broad emerging spatial patterns of agglomeration. ■ Economic performance in the formal or informal manufacturing, or service sectors, and the contribution of urban infrastructures to productivity enhancement. ■ Economic development policy and the institutional environment at the federal, state and local levels, and within national development programming

Preparation of High Grade Silica from Rice Husk for Zeolite Synthesis

Silica powder with approximately 96% purity was extracted from rice husk (RH) and used as a silica source for the synthesis of zeolite Y by hydrothermal process. The effect of synthesis parameters such as pH, temperature of burning the rice husk, acid leaching prior to formation of rice husk ash (RHA) on the properties of final product were studied. The acid-leached rice husk calcined at 650 °C for 6 h produced rough powder of rice husk silica, light brown in colour. The silica purity of the rice husk ash (RHA) calcined at 400, 450 and 5000C were 95.6wt%, 96.1wt% and 95.89 wt% respectively. The X-Ray Diffraction (XRD) pattern of the silica obtained show that the silica was amorphous with traces of crystalline phase. The amorphous nature of the RHA and the relatively high purity of silica content in it make it a suitable source of silica for zeolite synthesis.Keywords: Silica; RHA; Zeolite; Synthesis; Hydrothermal; Temperatur

Co-hort study of urinary schistosomiasis among two villages residing along Hadejia Valley, Jigawa State, Nigeria

A study was carried out to determine prevalence of urinary Schistosomiasis among two villages located along Hadejia valley in Jigawa State, Nigeria. A total of 125 urine sample from people residing in each of the two villages (Yamidi and Shawara), were screened for the presence or absence of S. haematobium eggs. Urine sample were screened using Concentration Sedimentation Technique. The overall prevalence of S. haematobium infection in Yamidi was 76.8% with mean Eggs per cubic Centiliter (EPC) of 2.9, and in Shawara the overall prevalence was 77.6% with mean EPC of 3.4. Males were found to be more infected than female in both the two villages. People aged 1 to 5 years have highest prevalence of the infection in both the two villages than people among older age group. People with haematuria have highest prevalence of 95.1% and mean EPC of 6.0 than people without haematuria that have lower prevalence of 72.0% and mean EPC of 3.4.There was no significant relationship (p > 0.05) between the infection and presence or absence of haematuria. This study has established that urinary schistosomiasis is endemic in the study area.Keywords: Hadejia, Haematuria, Infection, Jigawa, Nigeria, Schistosomiasi

Introducing a Manipulated System of Drainage Basins of a Developing Countries

As a natural open system, in a drainage basin, there is water flow and balanced channel characteristics. In a manipulated channel system, however, according to Mrowka (1974) and Schumm (1977), the water flow is made under control that induces dynamics in channel characteristics. In this paper, attempt is made to uncover how channel project is caused, nature of the new forms of channel cross-sectional area, shape, sinuosity, and gradient, as well as flood-plain characteristics. It also covers the peculiar transformation evolved as drainage basin system is changed to channel project. Consequently in the paper, two tasks involved were explained. These are significant channel re-construction, and redirection of stream flow as relates to developing water terrace in the savanna zone of Nigeria with the increased channel project dated back 1970s (Olofin, 1980). Specifically, the paper drew considered the physical characteristics of the natural channel of River Suka in North Central Nigeria and the manipulated system or the new face of the drainage basin project of the Kano River, Nigeria used to structure the Tiga dam that involved downstream channel adjustments Keywords: drainage basin, channel, river, dam, downstrea

Umbilical and ovarian endometriosis coexisting with multiple uterine myomas: A rare case report

Endometriosis and uterine fibroids are both independently associated with infertility/subfertility among women of reproductive age. Primary umbilical endometriosis is very rare and usually does not coexist with ovarian endometriomas. Endometriosis coexisting with uterine myomas has only been reported in few publications. Herein, we presented a patient with primary umbilical endometriosis with no previous history of surgery, with left ovarian endometriomas coexisting with multiple uterine fibroids. The diagnosis of umbilical endometriosis should be kept in mind while evaluating an umbilical mass. The ultrasound and magnetic resonance imaging features of endometriosis and uterine myomas have been presented. To the best of our knowledge, a similar case has not been reported before