scholarly journals Construction and performance evaluation of a conventional solar distiller

2019 ◽  
Vol 1 (2) ◽  
pp. 72-77 ◽  
Author(s):  
Abderrahmane Khechekhouche ◽  
Nabil Elsharif ◽  
Imad Kermerchou ◽  
Ali Sadoun
Keyword(s):  
Drinking Water ◽  
Performance Evaluation ◽  
The Poor ◽  
Solar Distillation ◽  
The World ◽  
And Performance ◽  
Simple Economic

The distillation of water has become a necessity to reduce the demand for drinking water and many of the poor regions in the world do not have the means to have this technique therefore they use solar distillation, which is a simple economic and environmental technique . This technique suffers from low productivity, which is why researchers are trying to improve solar stills. In this work we show the choice of prototype distillers and we also show the technique of the study followed by researchers in this field.

The Drinking Water

2018 ◽  
pp. 10-33
Author(s):  
Robin Marie Averbeck
Keyword(s):  
Drinking Water ◽  
Political Institutions ◽  
Political Thought ◽  
The Poor ◽  
The World ◽  
Postwar Liberalism

Chapter 1 analyses the postwar body of political thought known as pluralism. It explores the work of key contributors to this body of thought such as David Riesman, Seymour Martin Lipset, and Daniel Bell, organizing the chapter by the different themes or memes they participated in and articulated. Chapter 1 presents the argument that pluralism deeply shaped postwar liberalism and infused it with the conviction that American political institutions were the best in the world and truly open to all who wanted to participate. However, pluralists also feared the poor, who they associated with ignorance and authoritarianism.

scholarly journals Ballast Contamination Mechanisms: A Criterial Review of Characterisation and Performance Indicators

2020 ◽  
Vol 5 (11) ◽  
pp. 94
Author(s):  
Daniel Bassey ◽  
Ben Ngene ◽  
Isaac Akinwumi ◽  
Victor Akpan ◽  
Gideon Bamigboye
Keyword(s):  
Developing Countries ◽  
Performance Evaluation ◽  
Performance Indicators ◽  
Cost Efficiency ◽  
Maintenance Costs ◽  
Track Maintenance ◽  
Fundamental Parameters ◽  
Particle Fragmentation ◽  
The World ◽  
And Performance

Across the world, ballasted railway tracks are utilised extensively due to their cost efficiency, ease of drainage, and capacity to withstand cyclic imposed loadings from heavy trains. In spite of these benefits, the ballast is often considered as a flexible medium; as such, its continuous deterioration is largely disregarded. Geotechnical challenges such as ballast contamination in the form of particle fragmentation, deposition of weathered materials, upward pumping of clay and fines from underlayers, and coal intrusion have led to differential settlements and reduced drainability of tracks, thereby exacerbating track maintenance costs. This study reviews existing works of literature to expound on the mechanisms for ballast contamination and to highlight the fundamental parameters that guide the characterisation and performance evaluation of railway ballasts. The study shows that ballast fragmentation accounts for about 76% of commonly recorded contaminations, while it is also observed as the most critical to track stability. As such, a variety of indices and specifications for ballast gradation have been established worldwide to guide practice in ballast characterisation and performance evaluation. However, the mechanisms of ballast fragmentation and deterioration require further research to guide the improvement of contemporary guidelines, and mitigate the risk of abrupt track failures, especially in developing countries.

scholarly journals Formulation and Performance Evaluation of Calendula Officinalis Linn Extract Loaded Ethosomal Cream

2021 ◽  
Vol 23 (11) ◽  
pp. 462-474
Author(s):  
Archana R. Dhole ◽  
◽  
Khushabu M. Mulla ◽  
Sushmita S. Salunkhe ◽  
Komal S. Talekar ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Antioxidant Properties ◽  
Calendula Officinalis ◽  
Novel Approach ◽  
Pharmacological Studies ◽  
The World ◽  
Anti Inflammatory ◽  
And Performance

Among the various species of the genus Calendula, C. officinalis is the only one, which is extensively used clinically throughout the world. Pharmacological studies reveal that C. officinalis exhibits antibacterial, antiviral, anti-inflammatory, anti-tumor and antioxidant properties, helps promote the healing of minor burns, scrapes and skin irritations and relieves sunburn and minor cuts. The objective of this study was to optimize conditions for encapsulating Calendula officinalis Linn extract. Thus a novel approach to effectively treat wrinkles, helps promote the healing of minor burns, scrapes and skin irritations and relieves sunburn and minor cuts by delivery of an antioxidant using a special lipid vesicular carrier, the Ethosomal cream was prepared.

scholarly journals Design, Fabrication and Performance Evaluation of Chicken De-Feathering Machine

2021 ◽  
Vol 8 (12) ◽  
pp. 703-711
Author(s):  
Adefuye O.A ◽  
Adedeji K.A ◽  
Fadipe L.O
Keyword(s):  
Performance Evaluation ◽  
Electric Motor ◽  
Hot Water ◽  
Calorie Content ◽  
The World ◽  
Different Types ◽  
And Performance ◽  
Design Calculations ◽  
The Right ◽  
Rotating Plate

Due to its low fat and calorie content, chicken meat is popular among non-vegetarians all over the world. The design, fabrication, and performance evaluation of a chicken de-feathering machine using locally available materials are described in this paper. The design calculations were done correctly to guarantee the right shaft diameter, as this might impact the machine's efficiency. The machine uses rubber fingers to do the actual removal of the feathers. The rubber fingers are attached to a rotating plate against a stationary plucking basin carrying protruding rubber fingers. From the analysis, a 1.0 H.P electric motor is required to drive the machine and this was used to drive the machine. Following the design and fabrication of the machine, three different types of chickens were used to test its performance. The chickens were immersed in hot water between 60 and 90 degrees Celsius and held between the 40s and 60s. The machine removed feathers without any major damage to the chickens. At each trial, the efficiency was calculated. In conclusion, the machine performed efficiently and effectively, leaving behind products that are readily marketable. Keywords: [Chicken, De-feathering, Efficiency. Fingers, Scalding, Rubber.]

Design and performance evaluation of a novel solar distillation unit

Desalination ◽  
2017 ◽  
Vol 416 ◽  
pp. 65-75 ◽  
Author(s):  
Pankaj Kalita ◽  
Sangeeta Borah ◽  
Dudul Das
Keyword(s):  
Performance Evaluation ◽  
Distillation Unit ◽  
Solar Distillation ◽  
And Performance

Performance Evaluation of Routing Metrics in Wireless Multi-Hop Networks

2016 ◽  
pp. 85-104
Author(s):  
Usman Ashraf ◽  
Syed Salman Haider Rizvi ◽  
Mohammad Faisal Azeem
Keyword(s):  
Performance Evaluation ◽  
New Technology ◽  
Academic Research ◽  
Communication Technologies ◽  
Test Bed ◽  
Routing Metrics ◽  
Hop Count ◽  
Ieee 802.11N ◽  
The World ◽  
And Performance

In the world of wireless communication technologies, the new standard IEEE 802.11n (MIMO) has revolutionized the available wireless bandwidth. Significant industrial and academic research has been initiated on this new technology around the world. Moreover, international as well as local manufacturers are highly interested in commercialization and performance improvement of this new technology. This is a research project in which we will perform comprehensive benchmarking of IEEE 802.11n in wireless multi-hop environments. In this project we evaluate the performance of routing metrics: Hop Count (HC) and Expected Transmission Count (ETX) on a test bed at A-Block Air University.

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