Engineering

Research Papers/Topics Engineering

APPLICATION OF VIBRATION TECHNIQUE FOR THE CONTROL OF SPROUTING IN YAM (Dioscorea spp.) DURING STORAGE

Early sprouting of yam tuber is a typical problem during storage resulting into weight losses, deterioration, shrinkage and reduction in quality. This study investigated the application of vibration technique to control sprouting in yam tubers during storage. A mechanical yam vibrator having adjustable frequencies and amplitudes was developed with vibrating chamber of capacity size of 670 × 570 × 180 mm3 which can contain four tubers of yam at a time. The physical properties (length, n...

The Process Passed Through in the Production of Marble through Different Species.

CASE STUDY: ONSHORE FRONTIER LIMITED ❖Marble ❖The process passed through in the production of marble times through different species. AND Machines and processes involved in the production of marble tiles.

Algorithms and Data Structures Part 4: Searching and Sorting (Wikipedia Book 2014)

Searching 1 Search algorithm 1 Linear search 3 Binary search algorithm 6 Sorting 14 Sorting algorithm 14 Bubble sort 25 Quicksort 31 Merge sort 43 Insertion sort 52 Heapsort 59 References Article Sources and Contributors 66 Image Sources, Licenses and Contributors 68

E-Store Project Software Requirements Specification Version <4.0>

  Introduction The introduction of the Software Requirements Specification (SRS) provides an overview of the entire SRS with purpose, scope, definitions, acronyms, abbreviations, references and overview of the SRS. The aim of this document is to gather and analyze and give an in-depth insight of the complete Marvel Electronics and Home Entertainment software system by defining the problem statement in detail. Nevertheless, it also concentrates on the capabilities required by stakeholders and...

Improvement on Concurrency Control in a Distributed Database

ABSTRACT  The study was conducted of the Improvement on concurrency control in a distributed database. The objectives of the study are to ensure consistent and correct transaction, efficient data collection and management and recoverability of data in a distributed database. The Mysql relational database was employed in collecting data for concurrency control protocols. The Unified Modeling Language (UML) was used in creating the use case, sequence diagram, class diagram and contract for the...

Performance Analysis of Frame Aggregation Based IEEE 802.11n Wireless Local Area Network (WLAN)

ABSTRACT  The IEEE 802.11 Wireless Local Area Network (WLAN) standard was able to ease the communication difficulty by providing mobility and low cost of system deployment for its users. On the other hand, the WLAN has difficulty in meeting the optimum Quality of Service (QoS)demand for data applications. Consequently, a later variant of the amendment standard, IEEE 802.11n, came with improvement strategies. The introduction of frame aggregation, block acknowledgment and reverse direction pr...

Simulation, Modeling and Control for Crude Distillation Unit

ABSTRACT  The control of the distillation unit in Khartoum refinery, by keeping the operating conditions in certain limits is essential to adjust disturbances which lead to deviation from the desired values. The aim of this work is to select the suitable controller and the appropriate tuning method. The control loops are designed depending upon controllability and performance. These loops were Control of furnace temperature, Control of interface level at reflux drum, Control of level at stri...

Optimize the Operational Parameters through Simulation to Increase the Efficiency of Combined Cycle Power Plants

ABSTRACT  Electric power generation is one of the important factors for the development of peoples and can take an advantage of energy extraction technology of combined cycle in Sudan, which is highly effective in the States instead of remote power generation and combined cycle power plant also be economically feasible for use in sugar refineries in Sudan. . The purpose of this study is to find the maximum efficiency and minimum cost of power generation in combined cycle power plant by simul...

Implementation of Web-Based Health Management System for National Health Insurance Scheme

ABSTRACT Web-based health management system for National Health Insurance Scheme is considered in this project work as an online information storage and retrieval internet portal where the stakeholders registered and participating in the National Health Insurance Scheme of the federal ministry of Health will be able to access relevant information regarding NHIS. The Internet portal will also be useful to prospective or intending participants who want to key into the programme. The stakeholder...

A Fault Detection and Protection Scheme for a 200 MVA Transformer using Fuzzy Logic

ABSTRACT Condition monitoring of Electrical power equipment has attracted considerable attention for years. The aim of this work is to use Fuzzy logic (FL) Tool Box in building a simulation system that will diagnose all kinds of incipient faults, phase to phase fault and overloading in a transformer and monitor its conditions. Current and rate of change of current with time have been identified as the input variables, duly represented in the programme as “Error” and “Error-Dot”. Thes...

Reactivation of Spent FCC Catalyst for the Removal of Heavy Metals from Refinery based Stimulated Waste Water

ABSTRACT The reactivation of spent FCC catalyst for its application in the adsorption of heavy metals from wastewater was investigated in this research. The most effective reactivation route of spent FCC catalyst was the oxidation of the spent FCC catalyst using hydrogen peroxide at an oxidant-to-catalyst ratio of 16 ml/g, contact time of 60 minutes and a temperature of 90oC, followed by treatment with acetic acid solution at an acid-to-catalyst ratio of 20 ml/g, 75 minutes contact time and a...

Comparative Analysis of Distributed Power Control Algorithms in Cellular Network

ABSTRACT Wireless Communication is one of the most active areas of technological development of our time. It covers a very wide array of applications that lead to an ever growing demand on the limited radio resources. Consequently, the need for efficient management of the limited radio resources has become imperatively a global issue. The complexity of the cellular system and the propagation channel resulted in the interference issues that degrade the system performance. Transmit power otherw...

Multi‑time Scale Coordinated Optimization of New Energy High Permeability Power System Considering Flexibility Requirements

The high proportion of grid-connected intermittent energy such as wind power and photovoltaic makes the demand for power system flexibility increase sharply. In order to improve the overall flexibility of new energy high permeability system and enhance the economy of power system, promote the new energy consumption of system. This paper presents a multi- time scale Coordinated optimization strategy for the new energy high permeability power system considering flexibility requirement (MTS...

New Methods of Removing Debris and High Throughput Counting of Cyst Nematode Eggs Extracted from Field Soil

The soybean cyst nematode (SCN), Heterodera glycines, is the most damaging pathogen of soybeans in the United States. To assess the severity of nematode infestations in the field, SCN egg population densities are determined. Cysts (dead females) of the nematode must be extracted from soil samples and then ground to extract the eggs within. Sucrose centrifugation commonly is used to separate debris from suspensions of extracted nematode eggs. We present a method using OptiPrep as a density gra...

REFRIGERATION

INTRODUCTION DEFINITION: This is the process of cooling a defined space for various applications such as preservation of products in a domestic, commercial or industrial setting. The temperature attained is influenced by the storage and maintenance requirements of the product to be preserved. The process creates a refrigeration effect at a source while delivering heat to a sink.


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