Abstract: Two new lactones (1-2) along with a sesquiterpenoid 3 have been isolated from the chloroform extract of the fruits of Terminalia catappa. The structures of the isolated compounds were established by chemical and spectroscopic methods including IR, 1H NMR, and 13C NMR and Mass spectroscopy. The origi...     Read More

Abstract: In modern medical field detecting nipping is done manually by ophthalmologists to detect hypertension of a patient. This is mainly done by the doctor using a gonioscope or by examines a fundus image of the patient. This proceeding may takes extensive amount of time and when the ophthalmologist ...     Read More

Abstract: Tear film unstable is one of the major features of dry eye syndrome. One diagnostic method is fluorescein tear film break-up time test, this test is limited by its subjective and necessity to use manually reading the fluorescent image to identify the break-up area and thus variable result. The ...     Read More

Abstract: Orthogonal matching pursuit (OMP) is a commonly used algorithm in compressed sensing (CS) for estimating a sparse vector/signal x from linear measurements y m , where m n . There are two generally stopping criteria adopted in the iterative OMP. One, assum...     Read More

Abstract: There have been numerous studies on formal methods but yet there is diminutive utilization of formal methods in the commercial world. This can be attributed to many factors such as that few specialists know how to use Formal Methods (FMs) and also the use of mathematical notation gives a perception ...     Read More

Abstract: This work analyzed the plastic and elastic properties of some Nigerian timber as a structural material. Charpy impact test method was used to determine the impact energy/toughness of twenty locally available timber species, comprising of ten hardwoods and ten softwoods. Three sets of specimen (havin...     Read More

Abstract: Reinforced concrete construction entails substantial support work and formwork activities, which expose workers to, inter alia, work at elevated heights, ergonomic hazards, and hazardous chemical substances. Furthermore, support work and formwork are required to support and or restrain substantial l...     Read More

Abstract: The work verifies the morphological variation of strength in various sizes of solid timber beam in order to ascertain their respective volumetric strength mode at the three (3) perpendicular directions. In this work, a mathematical tool known as Volume Integral was adopted to analyze the volumetric ...     Read More

Abstract: This work presents a finite element analysis, using Ansys software, of the O-ring behavior inserted into a groove in a static sealing assembly. The analysis showed that mechanical clearance and friction are key parameters that have an effect on stress distribution. The results of the numerical simul...     Read More

Abstract: In the recent decades, multi-pass sheet metal spinning proved to be a critical process for many industrial components such as jet engines, large size pressurized tanks and vessels, but residual stresses and springback in these spun parts remain an alarming problem. This study is intended to provide ...     Read More