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Chinedu James Ujam

Publications (3)

Temperative Dependence of Electrical Conductivity in Semiconductors

Chinedu James Ujam & D. Adebayo Adeniyi · Journal of Engineering Research and Reports · 2021

The electrical conductivity of a semiconductor material is between that of a conductor, such as metallic copper, and that of an insulator, such as glass. Its resistivity decreases as the temperature rises, whereas metals have the reverse effect. By adding impurities ("doping") in...

Open access Research Article 10.9734/jerr/2021/v21i1117501

Optimization of Packaging Line Performance: A Case Study of AB Breweries in Nigeria

Chinedu James Ujam & Harold Chukwuemeka Godwin · Journal of Engineering Research and Reports · 2018

This paper presents an approach for improving productivity in breweries. A case study of AB brewery was adopted. Traditionally, packaging line improve  performance and productivity based on extrapolation of past experience, but in recent times, the traditional method could not me...

Open access Research Article 10.9734/jerr/2018/v1i19764