Experimental investigation of microalgal harvesting with low cost bottom ash: Influence of temperature and pH with zeta potential and thermodynamic function

2021 ◽  
Vol 22 ◽  
pp. 101376
Author(s):  
Shamshad Ahmad ◽  
Richa Kothari ◽  
Har Mohan Singh ◽  
V.V. Tyagi ◽  
Bhaskar Singh ◽  
...  
2021 ◽  
Vol 306 ◽  
pp. 124887
Author(s):  
Osman Gencel ◽  
Syed Minhaj Saleem Kazmi ◽  
Muhammad Junaid Munir ◽  
Gokhan Kaplan ◽  
Oguzhan Yavuz Bayraktar ◽  
...  

2020 ◽  
Vol 36 (4) ◽  
pp. 1886-1911 ◽  
Author(s):  
Anastasios Tsiavos ◽  
Anastasios Sextos ◽  
Andreas Stavridis ◽  
Matt Dietz ◽  
Luiza Dihoru ◽  
...  

This study presents a large-scale experimental investigation on the seismic performance of an innovative, low-cost seismic isolation system for developing countries. It is based on the beneficial effect of the encapsulation of sand grains between two PVC surfaces on the initiation of sliding and the dissipation of seismic energy between the surfaces. A three-times scaled-down, idealized, seismically isolated model of a prototype single-story structure located in Nepal is subjected to an ensemble of recorded earthquake ground motion excitations. The experimentally derived response of the seismically isolated structure is compared with the response of the corresponding fixed-base structure. This system is part of a wider hybrid design approach where the structure is designed to resist the seismic forces at the design acceleration level. The seismic isolation system sets an upper bound to the response of the structure for ground motion excitations exceeding the design level.


Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2674 ◽  
Author(s):  
Souad El Moudni El Alami ◽  
Raja Moussaoui ◽  
Mohamed Monkade ◽  
Khaled Lahlou ◽  
Navid Hasheminejad ◽  
...  

Industrial waste causes environmental, economic, and social problems. In Morocco, the Jorf Lasfar Thermal Power Station produces two types of coal ash with enormous quantities: fly ash (FA) and Bottom ash (BA). FA is recovered in cement while BA is stored in landfills. To reduce the effects of BA disposal in landfills, several experimental studies have tested the possibility of their recovery in the road construction, especially as a subbase. In the first phase of this study, the BA underwent a physicochemical and geotechnical characterization. The results obtained show that the BA should be treated to improve its mechanical properties. The most commonly used materials are lime and cement. In the selected low-cost treatment, which is the subject of the second phase of the study, lime is used to improve the low pozzolanicity of BA while calcarenite sand is used to increase the compactness. Several mixtures containing BA, lime, and calcarenite sand were prepared. Each of these mixtures was compacted in modified Proctor molds and then subjected to a series of tests to study the following characteristics: compressive strength, dry and wet California Bearing Ratio (CBR), dry density and swelling. The composition of each mixture was based on an experimental design approach. The results show that the values of the compressive strength, the dry density, and the CBR index have increased after treatment, potentially leading to a valorization of the treated BA for use in a subbase.


2017 ◽  
Vol 225 ◽  
pp. 84-89 ◽  
Author(s):  
Richa Kothari ◽  
Vinayak V. Pathak ◽  
Arya Pandey ◽  
Shamshad Ahmad ◽  
Chandni Srivastava ◽  
...  

2015 ◽  
Vol 131 ◽  
pp. 54-58 ◽  
Author(s):  
M.A. Morini ◽  
M.B. Sierra ◽  
V.I. Pedroni ◽  
L.M. Alarcon ◽  
G.A. Appignanesi ◽  
...  

2010 ◽  
Vol 1271 ◽  
Author(s):  
Li Qiao ◽  
Tao Xiaoming ◽  
Hua Tao

AbstractStretchable electronic circuits have the potential to the fields where electronics have to be conformable, deformable and stretchable into three dimensional surfaces. In this work, an “interlaced” structure is developed for multidirectional stretchable circuit. The shape of the conductor is loop-like configuration. A knitted structure is employed for the elastic substrate due to its flexibility, high stretchability, low cost and simple fabrication. The electro-mechanical behavior of the interlaced circuit is investigated in three different directions, i.e., 0-degree, 45-degree, and 90-degree, respectively. A significant improvement in stretchability is achieved in 0-degree direction. Then, a preliminary theoretical analysis is made in the electro-mechanical mechanism of the interlaced circuit. From the experimental investigation and theoretical analysis, it is found that the interlaced structure gives the conductor more freedom to move in the substrate, decreasing the stress concentration in the crest and trough parts of the loop when it is stretched.


Author(s):  
Mohamed M.Z. Ahmed ◽  
Fuhaid Alshammari ◽  
A.S. Abdullah ◽  
Mohamed Elashmawy

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