Experimental and Analytical Studies of an Ultra-high Performance Concrete Beam Using Carbon Fiber Reinforced Polymer BarsAbstract
Infrastructure degradation attributable to concrete deterioration and corrosion of reinforcing steel has been a long-standing challenge to the owners and engineers. This problem becomes more evident when concrete structures are subject to aggressively corrosive environments. The use of advanced materials such as ultra-high performance concrete (UHPC) and carbon fiber reinforced polymer (CFRP) bars has a strong potential to overcome this challenge and help build new infrastructure that is durable and sustainable. Ho [...] 1242 9073 |
Introduction to Genetic ScreeningAbstract
We present here the content and articles of this special issue on genetic screening, putting them in perspective with the field and between themselves. 1914 9064 |
The Use of Sulfur Waste to Protect Against Corrosion of Metal ImplantsAbstract
Metal parts of endoprosthesis have a detrimental effect on the bones that come into contact with them and on the entire body of the patient. Coating them with biocompatible layers (hydroxyapatite and bioglass) has not yet brought about permanent results. In this study, the author showed the possibility of using a binder containing sulfur waste for this purpose. The sulfur binder is used industrially in electrical engineering and construction applications. The chemical properties of elemental sulfur indicate that it [...] 1819 9063 |
A Preparation and Structural Characterization of the Hydrated Trifluoride Salt of the [Co(NH3)6]3+ Cation: [Co(NH3)6]F3 · 2H2O. The Unexpected Preparation of [Co(NH3)6](BF4)(SiF6) from Pyrex Glass, and the Syntheses and Structures of (NH4)[Co(NH3)6](BF4)2(2Cl) and of (NH4)[Co(NH3)6]2(SiF6)3(Cl) · 3H2OAbstract
It is historically interesting to note that, whereas the [Co(NH3)6]3+ cation was isolated by Tassaert in 1798 (which he described as the tri-chloride) and that, in the early days of Coordination Chemistry, Jørgensen and Werner isolated many of its other salts, the fluoride was never reported. In fact, in relatively modern times, lack of success was, invariably, the result of attempting its isolation and full characterization. Significantly, there is no entry for its structure in standard sources such as Inorganic C [...] 1420 9062 |
A Policy and Evaluation Framework for Sustainable Transitions - An Energy Policy Approachby
Joana Sousa
Abstract
The climate change and the social crisis launched the basis for the policy discussion about future trajectories of development and sustainability. Innovation policies are expected to promote the transformation of complex socio-technical systems and call for fundamentally different societal production and consumption patterns. This is strictly associated with energy systems and energy policies. A policy framework was conceptualized considering three levels approach: the policy shape at the micro level, the policy co [...] 1265 9058 |
Investigation of the Effect of Aerosol Deposition by Applying Electrostatic FieldsAbstract
Particulate matter (PM) constitutes a significant risk factor for environmental health regarding ambient air quality. An epidemiological investigation has determined that inadequate air quality is associated with the development of lung and cardiovascular diseases, chronic ailments, respiratory infections, and a significant number of fatalities on a global scale. According to the World Health Organization (WHO), the annual mortality rate due to air pollution is around 7 million individuals. The necessity for resear [...] 1131 9058 |
Association between Sleep Deprivation and Metformin Treatment on Pancreatic and Liver Function in MiceAbstract
Metformin has been widely used as a therapeutic drug for hyperglycemia and diabetes. Sleep is a vital and restorative process that is necessary for the proper functioning of organs. Sleep deprivation can induce multi-organ injury, including damage to the pancreas and liver that may result in hyperglycemia and diabetes. We studied the role of metformin in reversing sleep deprivation-induced hyperglycemia and pancreatic and liver dysfunction in mice. Mice were kept in cages and fed water and food ad libitum. Mice wer [...] 1425 9051 |
Methanol Synthesis Catalyst Waste as the Principal Component of New Sustainable Cementless Concreteby
Vsévolod Mymrin
,
Reinaldo H. G. Alarcon
,
Marilia A. Guidolin
,
Kirill Alekseev
,
Rogerio J. Hultmann
,
Walderson Klitzke
,
Karina Q. Carvalho
,
Fernando H. Passig
,
Charles W.I. Haminiuk
and
Rodrigo E. Catai
Abstract
Methanol synthesis catalyst (MSC) waste was applied as the principal component (till 70 wt.%) of sustainable ceramics in composites with bauxite processing waste (RM), and waste foundry sand (FS). The results of the initial components' chemical interaction studies by a complex of methods (XRD, SEM/EDS/mapping, AAS and LAMMA) during heating demonstrated the synthesis of amorphous glasslike new formation, their filling of pores and compaction of the ceramic’s structure. In this case, a strong chemical and mechanical [...] 1276 9046 |
llmenite and Biomass Composite Nanomaterials - A Reviewby
Charitha Thambiliyagodage
,
Madara Jayanetti
,
Geethma Ekanayake
,
Amavin Mendis
,
Heshan Liyanaarchchi
and
Supuni Wijayawardana
Abstract
Ilmenite is a mineral whose crystallinity can be altered by chemical treatment, producing TiO2 and iron and titanium-based metal nanocomposites, which are applicable mainly for photocatalysis. Porous and crystalline biomass-derived carbon materials include graphene oxide, reduced graphene oxide, graphitic carbon nitride, catalytically graphitized sucrose and chitosan, and activated carbon. Ilmenite-based metal oxides coupled with biomass-based carbon materials are effective in environmental remediation, especially [...] 1538 9046 |
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