ICubed is a National Science Foundation (NSF) funded project housed at the University of Central Florida aimed at increasing participation in STEM fields through coordination and institutional integration. The Univers...
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(纸本)9781509017911
ICubed is a National Science Foundation (NSF) funded project housed at the University of Central Florida aimed at increasing participation in STEM fields through coordination and institutional integration. The University of Central Florida Science, Technology, engineering, Arts and Mathematics (UCF STEAM) is a component of ICubed. As a part of this program, UCF STEM faculty and undergraduate researchers work collaboratively with faculty and students in the College of Arts and Humanities to create science-inspired art based on the STEM researcher's explanations of scientific concepts and possibilities. Since the program's inception in 2010, over 700 University of Central Florida faculty and students have participated in the STEAM program with a large majority coming from engineering fields. An evaluation of the program over the last six years demonstrates that by encouraging strong post-secondary cross-disciplinary collaborations, the UCF STEAM program has enlightened UCF's undergraduate engineering students in a manner that not only leads to greater recognition of the interdependencies of right- and left-brain directed skills but also has helped to improve learning and communication skills. This paper highlights UCF engineering STEAM activities and lends a discussion to the educational impact of such a program.
Novel advanced nanocomposites formed by associating graphene oxide(GO)nanosheets with other nanomaterials such as titanium dioxide nanoparticles,cellulose nanofibers,cellulose nanocrystals,and carbon nanotubes were in...
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Novel advanced nanocomposites formed by associating graphene oxide(GO)nanosheets with other nanomaterials such as titanium dioxide nanoparticles,cellulose nanofibers,cellulose nanocrystals,and carbon nanotubes were incorporated in nanofiltration(NF)and reverse osmosis(RO)membranes for wastewater treatment and ***-based nanocomposite has promising potential in membrane technology due to its high hydrophilicity,absorption capacity,good dispersibility in water and organic solvents,anti-biofouling properties,and negative ***,additional properties can be obtained depending on the nanohybrid *** review paper highlights the recent breakthrough in membranes functionalized with GO-based nanohybrids,focusing on membrane performance in terms of permeability,selectivity,and antifouling *** GO-based nanohybrids have made significant progress in membrane technology,improvements are still needed,especially regarding trade-off ***,the studies presented here are limited to laboratory scale,which leads to suggestions for new studies evaluating the possibility of commercial application and the potential environmental impact caused by nanocomposites.
Helicopters, the primary vehicles for aerial support in naval operations, are the subject of our study. As the helicopter navigates above the ship’s landing deck, the unsteady flows formed in this region will transla...
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This study investigates the influence of waste characteristics,especially zeta potential,on the properties of cement pastes and *** focus is to evaluate the impact of the zeta potential of cement particles and waste m...
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This study investigates the influence of waste characteristics,especially zeta potential,on the properties of cement pastes and *** focus is to evaluate the impact of the zeta potential of cement particles and waste materials on the sedimentation speed,rheology,and hardening time of stabilized cement *** Cement II F 40,retarder additive,silica,and fly ash were used in the *** pastes were prepared,and during the stabilization period,their rheological properties and pH were *** zeta potential and sedimentation speed of the cement and waste particles were measured at the pH that the pastes presented during the entire stabilization *** the stabilization period,the pastes were subjected to the hardening time *** zeta potential analyses revealed diverse values for the different powder types,with the cement particles exhibiting a zeta potential of−3.0 mV,the silica particles exhibiting−10.5 mV,and the fly ash particles exhibiting−20.3 *** influence of the high zeta potential modulus was observed on the sedimentation speed,with the solution containing fly ash exhibiting a speed of 40.01μm/s,whereas the solution containing only cement exhibited a speed of 99.38μm/*** the pastes,the results indicate that the presence of fly ash particles with a significantly negative zeta potential led to a 16%reduction in hardening time compared to particles with a lower modulus of zeta *** tests showed that the inclusion of fly ash particles prevented the formation of *** the zeta potential influenced agglomerate formation and hardening time,it was found to have no effect on yield stress or viscosity.
The global nitrogen cycle holds immense importance due to its crucial role in supporting life, supplying vital nutrients for plant growth, preserving environmental balance, and enabling the proper functioning of ecosy...
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The global nitrogen cycle holds immense importance due to its crucial role in supporting life, supplying vital nutrients for plant growth, preserving environmental balance, and enabling the proper functioning of ecosystems. However, human activities frequently disrupt this cycle, leading to the accumulation of nitrates and nitrites in water bodies. This accumulation causes environmental pollution and health risks. Traditional methods for treating nitrogen pollution, including biological, physical, and chemical approaches, have inherent limitations. In recent years, electrocatalysis has emerged as a promising and sustainable approach for nitrogen management. This technology offers superior efficiency, high selectivity, and environmental *** not only enables accurate detection of nitrogen pollutants in the environment but also facilitates their conversion into harmless nitrogen gas. Moreover, recent advancements have focused on the upcycling of nitrogen pollutants into valuable compounds,such as ammonia and urea. In this comprehensive review, we showcase the applications of electrocatalysis in sustainable nitrogen management. Specifically, we highlight its use in the sensing, removal, and upcycling of major nitrogen pollutants,including nitrate（NO3-）, nitrite（NO2-）, and nitric oxide（NO）. We discuss the use of catalysts, such as Pd alloys, Cu-based, and Fe-based materials, in electrochemical sensing and catalysis. Additionally, we explore recent advancements in the conversion of nitrogen pollutants into valuable compounds like ammonia and urea. The review also addresses current challenges and future opportunities in the field, including innovations in sensor and catalyst design, as well as large-scale treatment strategies. We anticipate that these perspectives will provide profound insights for effective nitrogen pollution control and sustainable utilization of nitrogen resources.
Purpose: Due to failures that occur during intubation, some authors advocate that intubation should always be done with a video laryngoscope. What makes the implementation of this recommendation difficult, especially ...
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Urban buses, particularly in large cities, are exposed to significant noise pollution. This paper presents a new family of materials at the micro/nano level designed for urban noise attenuation, specifically for appli...
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As global population rises,accompanied by escalating environmental pollution and climate change,numerous countries find themselves grappling with an acute scarcity of natural freshwater resources^([1]).Seawater desali...
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As global population rises,accompanied by escalating environmental pollution and climate change,numerous countries find themselves grappling with an acute scarcity of natural freshwater resources^([1]).Seawater desalination presents a compelling solution to this looming crisis,especially considering the oceans are Earth’s largest water reservoir^([2]).
Advancements in neuromorphic computing have given an impetus to the development of systems with adaptive behavior,dynamic responses,and energy efficiency *** charge-based or emerging memory technologies such as memris...
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Advancements in neuromorphic computing have given an impetus to the development of systems with adaptive behavior,dynamic responses,and energy efficiency *** charge-based or emerging memory technologies such as memristors have been developed to emulate synaptic plasticity,replicating the key functionality of neurons—integrating diverse presynaptic inputs to fire electrical impulses—has remained *** this study,we developed reconfigurable metal-oxide-semiconductor capacitors(MOSCaps)based on hafnium diselenide(HfSe2).The proposed devices exhibit(1)optoelectronic synaptic features and perform separate stimulus-associated learning,indicating considerable adaptive neuron emulation,(2)dual light-enabled charge-trapping and memcapacitive behavior within the same MOSCap device,whose threshold voltage and capacitance vary based on the light intensity across the visible spectrum,(3)memcapacitor volatility tuning based on the biasing conditions,enabling the transition from volatile light sensing to non-volatile optical data *** reconfigurability and multifunctionality of MOSCap were used to integrate the device into a leaky integrate-and-fire neuron model within a spiking neural network to dynamically adjust firing patterns based on light stimuli and detect exoplanets through variations in light intensity.
Transition metal phosphides(TMPs)have been regarded as alternative hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalysts owing to their comparable activity to those of noble metal-based *** have ...
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Transition metal phosphides(TMPs)have been regarded as alternative hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalysts owing to their comparable activity to those of noble metal-based *** have been produced in various morphologies,including hollow and porous nanostructures,which are features deemed desirable for electrocatalytic *** synthesis routes are often responsible for such *** paper reviews the latest advances and existing challenges in the synthesis of TMP-based OER and HER catalysts through templated methods.A comprehensive review of the structure-property-performance of TMP-based HER and OER catalysts prepared using different templates is *** discussion proceeds according to application,first by HER and further divided among the types of templates used-from hard templates,sacrificial templates,and soft templates to the emerging dynamic hydrogen bubble *** catalysts are then reviewed and grouped according to their ***,prospective research directions for the synthesis of hollow and porous TMP-based catalysts,such as improvements on both activity and stability of TMPs,design of environmentally benign templates and processes,and analysis of the reaction mechanism through advanced material characterization techniques and theoretical calculations,are suggested.
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