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Wyszukujesz frazę "Ugochukwu, P." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Lean in the supply chain: a literature review
Autorzy:
Ugochukwu, P.
Engström, J.
Langstrand, J.
Powiązania:
https://bibliotekanauki.pl/articles/406738.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Lean
łańcuch dostaw
technika
praktyka
przegląd literatury
supply chain
literature review
principles
practices
techniques
Opis:
"Lean" is a management philosophy that enhances customer value through waste elimination and continuous improvement in a system, by applying lean principles, practices and techniques. The focus on lean implementations and research had been on a single company without extension to the entire supply chain. When the lean concept is implemented across the entire supply chain, however, it is referred to as a lean supply chain. The purpose of this paper is to review literature on lean in the supply chain and identify research trends and issues within the field. The paper involves a comprehensive review of articles on lean in the supply chain using structured content analysis. The reviewed articles were classified based on the basic characteristics and contextual issues of the articles. The researchers in the field agree that the identified benefits of lean in the supply chain, which include reduced cost, improved quality, faster delivery and flexibility, are linked to the implementation of certain lean principles, practices and techniques in the supply chain. Most of the reviewed articles are case studies, and evidence for the benefits of lean in the supply chain is anecdotal. While the empirical work done in the field is encouraging, quantitative studies to substantiate the claims for the efficiency of lean in the supply chain are lacking. In the reviewed articles, the manufacturing sector received much attention, while the service sector received little attention from researchers in the field. It was generally suggested that the supply chain members, suppliers and manufacturers should be considered in the implementation of lean in the supply chain, while the inclusion of distributors and end customers was not discussed in detail in many of the reviewed articles.
Źródło:
Management and Production Engineering Review; 2012, 3, 4; 87-96
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Analysis of the Effectiveness of Reverse Osmosis and Ultraviolet Radiation of Water Treatment
Autorzy:
Dirisu, Gabriel B.
Okonkwo, Ugochukwu C.
Okokpujie, Imhade P.
Fayomi, Ojo S.I.
Powiązania:
https://bibliotekanauki.pl/articles/125109.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
water treatment
water treatment techniques
ultraviolet radiation
reverse osmosis
Opis:
Water contamination and pollution pose health hazards to humanity and hence the need for their treatment. This study compared reverse osmosis (RO) and ultra-violet (UV) radiation in treating borehole water (BHW) and surface water (SW). The study area is Omoku community in Rivers State of Nigeria. The RO- and UV-treated waters were determined by their physicochemical characteristics and total Coliform, with the control to check the impact of each one. The obtained results showed slight variations, which were either significant or not. The pH of the treated BHW was slightly acidic with the value of 6.52. Water conductivity ranged from 40.33 µs/cm3 to 42.40 µs/cm3 for the BHW treated with RO, UV and control samples, respectively. SW conductivity attained a range of 425.07–800.0 µs/cm3. Turbidity of BHW were beyond the detectable limit but was higher than the WHO limit of <5.00NTU, while total suspended solid (TSS) of SW ranged from 9.08–46.43 ppm. Total dissolved solids (TDS) values of water were between 3.50 ppm and 16.67 ppm for RO treated BHW and higher than that of SW. There was a reduction of salinity of BHW from 40.7 mg/l to 11.8 and 21.6 mg/l following RO and UV treatment, while SW salinity was also reduced from 75.0 mg/l to 20 mg/l in RO treated water and 16 mg/l in UV treated water. In this study, RO and UV water treatment proved to be effective in producing potable water from both BHW and SW, although RO seemed to produce water with reduced mineral content in comparison to the UV treatment. Both methods effectively reduced heavy metals as well as Coliform. The physicochemical parameters tested were below the WHO recommended limits in most cases. It is recommended that both methods be incorporated in a single WT in order to gain the benefits of both technologies.
Źródło:
Journal of Ecological Engineering; 2019, 20, 1; 61-75
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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