We present the NERV, a nonmechanical, unidirectional valve, to control the locomotion of Caenorhabditis elegant (C. elegans) in microfluidic devices. This valve is created by establishing a region of lateral electric field which can be toggled between on and off states. We observed that C. elegans do not prefer to advance into this region when the field lines are facing their movement, so when they reach the boundary of the NERV, they partway enter the field, retreat, and switch direction. We...
It is becoming more essential to identify and recognize the phenotypes of anti-parasitic drug-resistant isolates. Current molecular methods of doing so are restricted. In this paper, we showcase a microfluidic bioassay to measure phenotype using parameters of nematode locomotion, using larvae of the animal parasite Oesophagostomum dentatum. Parameters of sinusoidal movement, including propagation speed, wavelength, wave amplitude, and oscillation frequency, were dependent on the levamisole-se...
ABSTRACT The Conventional Levenspiel and Smith fixed point continuous monitoring method is used in the evaluation of the dispersion number and the dispersion coefficient, I? of river Ebm under study. Comparisons were made with Agunwamba’s method and both methods for different results. The leverspiel and Smith method gave higher values than those obtained with the Agunwamba's method except in me station. This is due to experimental errors. The Agunwamba's method though more tedious gave mor...
ABSTRACT The objective of this research is to investigate the effect of addition of carbide on sewage degradation. To provide answers to the above objective, some laboratory tests were conducted which include Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total coliform, pH and Suspended Solids (SS) tests. Six experimental set ups of 5liters of sewage were constructed in the laboratory under anaerobic condition. Each of the sewage contained 0g (which served as control), 1g, ...
This research work, which presents a simplified technique of modelling steel fibers, uses python algorithm that can be directly run in ABAQUS to automatically generate the location and orientation of steel fibers in a rectangular ultra-high performance concrete specimen, so that the effect of steel fibers on the properties of such a specimen can be directly investigated through numerical simulation. This method is fast, can be applied to structural members of bigger dimensions (like beams,...
Linear analysis mostly applies to the problems that satisfy linear assumptions, materially linear problems that will have less displacements, less deformations, and boundary conditions which is constant. If any one of the above assumptions is not satisfied, a nonlinear analysis will have to be performed. ADINA Structures will provide powerful solving capacity and formulations which allows the solution of extremely complicated models with small CPU time and other memory requirements.
To study the effects of different types of bacteria on concrete. Develop a bacteria1 concrete by introducing the different bacteria. To study the efficiency of bacteria when mixed with mineral admixtures. Good compressive strength by arriving at optimum proportions by tria1. To make a comparative study of bacteria1 concrete with norma1 concrete.
TABLE OF CONTENTS CHAPTER ONE: INTRODUCTION - - - - - - - - - - - - - - I 4.0 Data availability probletn in agricultural Engineering designs in Nigeria - - - - - - - - I 1.1 Significance of the project - - - - - - - - - 6 1.2 Statement of objectives - - - - - - - - - - - 7 CHAPTER TWO: LITFfiTURE REVIEW - - -- - - - - - - - - 8 Analysis of 2ainfuli Data - - - - - - - - - - - 8 Frequency Analysis - - - - - - - - - - - - - - 9 Probability Analysis - - - - - - - - - - - - - I1 Water Requirement ...
ABSTRACT In this work, models for predicting six structural characteristics and cost of sand-quarry dust blocks were developed. Three model equations namely Scheffe’s simplex lattice design (pseudo component), Scheffe’s simplex lattice design (component proportion) and Osadebe’s model were developed for each property. The properties investigated were Compressive strength, Water absorption and Split tensile strength. The others are Static modulus of elasticity, Flexural strength and She...
ABSTRACT The primary purpose of this study is to identify the causes of rutting in highway pavements in the form of channelization particularly on wheel tracks resulting from high traffic repetitions and environmental effects. The rutting reduces the required performance due to poor hot mix asphalt (HMA) components and construction to mention a few. The study focused on the impact of fine aggregate angularity (FAA) to increase Asphalt layer stability. AASHTO testing method (T 304) was appli...
ABSTRACT Data warehousing and business intelligence are key enablers in the drive to harness management information and improve decision-making. They underpin the recent wave of interest in data mining and customer relationship management, and create opportunities for performance improvements based on quantitative analysis at every le-vel in an organization. Data warehousing is a relatively new field in information technology, and current research centers primarily on data warehousing in bu...
ABSTRACT The rate at which roads fail in Nigeria should worry any responsible citizen. Considering the enormous resource expended to construct a kilometer of road, it is heartbreaking when the same road fail barely six (6) months after construction. For in the life of our dear country, the all-important economic theory of opportunity cost is applicable just as it is elsewhere in the world. Stabilization is a viable alternative to achieving a durable road construction regime. Soil stabilizati...
ABSTRACT With recent advances in wireless technology, users of wireless network now expect quality of service and performance comparable to what is available in fixed networks. The IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard that supports Quality-of-Service (QoS) requirements of both data and real-time applications. The IEEE802.11e MAC is based on both centrally-controlled and contention-based channel acce...
TABLE OF CONTENTS ABSTRACT . . ACKNOWLEDGEMENT LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS CHAPTER ONE: INTRODUCTION . * . . . . 1.1 Approach To Elasticity Problems-General .. 1.2 Reduction Of A Two-Dimensional Problem To A One-Dimensional One . . . . 1.3 Vlasov's Mixed Method , . . 1.4 Aim And Scope . @ . . 1.5 Review Of Literature .a . . CHAPTER TWO: FORMULATIONS OF THE GOVERNING EQUATIONS .. 0. . . 2.1 Plane Stress Formulation . . a . 2.2 Plane Strain Case . . . . . . ...
ABSTRACT Paper based system for handling crime reporting becomes one of the challenging methods in police services globally ever since paper was invented. The South Sudan National Police Services (SSNPS) uses this system for handling crime reporting. This system presents a number of challenges such as a delay in disseminating crime reports by victims or witnesses, misplacement or loss of crime recorded files from the Police shelves and inconsistency of suspect documentation due to wrong man...