1,396 research outputs found
Focus on Architectural Design Process through Learning Styles
Cataloged from PDF version of article.Learning as an interactive process is an important issue in architectural design education. This study aims to focus on architectural design process through learning styles that are 'accommodating', 'diverging', 'assimilating' and 'converging' as stated in the Experiential Learning Theory of Kolb. A research was conducted to evaluate the effects of learning style preferences on the performance of design students in a design process. It was found that there were statistically significant differences between the performance scores of students having diverse learning styles at various stages of design process. Also, it was found that performance scores of all students having different learning styles had increased at the end of the design process where the progress of assimilating learners were the highest and accommodating learners the lowest
Reduction of seafood processing wastewater using technologies enhanced by swim–bed technology
The increasing growth of the seafood processing industries considerably requires more industrial process activities and water consumption. It is estimated that approximately 10–40 m3 of wastewater is generated from those industries for processing one-tonne of raw materials. Due to limitations and regulations in natural resources utilization, a suitable and systematic wastewater treatment plant is very important to meet rigorous discharge standards. As a result of food waste biodegradability, the biological treatment and some extent of swim-bed technology, including a novel acryl-fibre (biofilm) material might be used effectively to meet the effluent discharge criteria. This chapter aims to develop understanding on current problems and production of the seafood wastewater regarding treatment efficiency and methods of treatment
Continuous catalytic upgrading of ethanol to n-butanol and >C-4 products over Cu/CeO2 catalysts in supercritical CO2
n-Butanol (BuOH) often has superior properties as a bio-fuel compared to ethanol (EtOH). However finding sustainable sources of BuOH is proving difficult. In this paper, direct production of BuOH from EtOH is compared over custom-synthesized six Cu catalysts, supported on different solid acids. These catalysts were tested in a continuous flow supercritical CO2 (scCO2) reactor, and were found to catalyse the dehydrogenation, aldol condensation and hydrogenation steps of the so-called Guerbet reaction converting EtOH to BuOH. BuOH yields and selectivities were significantly different over the four catalysts. Cu on high surface area CeO2 showed the best activity for BuOH formation, with yields above 30% achieved with good selectivity. In addition high pressure CO2 is shown to have a positive effect on the reaction, possibly due to the redox cycle of Ce2O3 and CeO2
Natural coagulates for wastewater treatment; a review for application and mechanism
The increase of water demand and wastewater generation is among the global concerns in the world. The less effective management of water sources leads to serious consequences, the direct disposal of untreated wastewater is associated with the environmental pollution, elimination of aquatic life and the spread of deadly epidemics. The flocculation process is one of the most important stages in water and wastewater treatment plants, wherein this phase the plankton, colloidal particles, and pollutants are precipitated and removed. Two major types of coagulants are used in the flocculation process included the chemical and natural coagulants. Many studies have been performed to optimize the flocculation process while most of these studies have confirmed the hazardous effects of chemical coagulants utilization on the ecosystem. This chapter reviews a summary of the coagulation/flocculation processes using natural coagulants as well as reviews one of the most effective natural methods of water and wastewater treatment
A change in the transportation needs today, a better future for tomorrow – climate change review
No sooner than later, the world will be living hell as a result of the transportation effects on our climate now escalating. The pressure is now growing towards their resultant effects to be totally eradicated in order to save our planet otherwise, the stabilisation of these effects; global warming, greenhouse gas (GHG) emission and degradation will need to be sought after. The world all over is at it now in an effort to restore our climate, to save it from the effects of these catastrophes/disasters.
On the proposition of the Kyoto Protocol in1997, the main focus was to decrease greenhouse emissions of mainly six gases – Carbon dioxide, methane, nitrous oxide, sulphur hexafluoride, Hydro fluorocarbons (HFCs) and Per fluorinated Compounds (PFCs). And transport alone, accounts for over 26% of global CO2 and has been regarded as one of the few industrial sectors wherein emissions are still on the increase, on this basis, researchers and policy makers are all at it to tackle the menace of climate changes through provision of sustainable transport.
This paper focuses on the new and developed technologies like the renewable energy source [RES], which will be an alternative to transport fuels to avoid the dependence on petroleum which after effects are damaging to the world climate, and may probably not be there forever to continue serving the world ever increasing population. While the long term solutions are being sought, these alternatives will make do for now
LineKing: Coffee Shop Wait-Time Monitoring Using Smartphones
This article describes LineKing, a crowdsensing system for monitoring and forecasting coffee shop line wait times. LineKing consists of a smartphone component that provides automatic and accurate wait-time detection, and a cloud backend that uses the collected data to provide accurate wait-time estimation. LineKing is used on a daily basis by hundreds of users to monitor the wait-times of a coffee shop in the University at Buffalo, SUNY. The novel wait-time estimation algorithms of LineKing deployed at the cloud backend provide median absolute errors of less than 3 minutes. © 2002-2012 IEEE
Biomethanation potential of biological and other wastes
Anaerobic technology has been traditionally applied for the treatment of carbon rich wastewater and organic residues. Anaerobic processes can be fully integrated in the biobased economy concept for resource recovery. After a brief introduction about applications of anaerobic processes to industrial wastewater treatment, agriculture feedstock and organic fraction of municipal solid waste, the position of anaerobic processes in biorefinery concepts is presented. Integration of anaerobic digestion with these processes can help in the maximisation of the economic value of the biomass used, while reducing the waste streams produced and mitigating greenhouse gases emissions. Besides the integration of biogas in the existing full-scale bioethanol and biodiesel production processes, the potential applications of biogas in the second generation lignocellulosic, algae and syngas-based biorefinery platforms are discussed.(undefined
Accelerated diabetic wound healing by topical application of combination oral antidiabetic agents-loaded nanofibrous scaffolds: An in vitro and in vivo evaluation study
The combination of oral antidiabetic drugs, pioglitazone, metformin, and glibenclamide, which also
exhibit the strongest anti-inflammatory action among oral antidiabetic drugs, were loaded into
chitosan/gelatin/polycaprolactone (PCL) by electrospinning and polyvinyl pyrrolidone (PVP)/PCL
composite nanofibrous scaffolds by pressurized gyration to compare the diabetic wound healing
effect. The combination therapies significantly accelerated diabetic wound healing in type-1
diabetic rats and organized densely packed collagen fibers in the dermis, it also showed better
regeneration of the dermis and epidermis than single drug-loaded scaffolds with less inflammatory
cell infiltration and edema. The formation of the hair follicles started in 14 days only in the
combination therapy and lower proinflammatory cytokine levels were observed compared to single
drug-loaded treatment groups. The combination therapy increased the wettability and hydrophilicity
of scaffolds, demonstrated sustained drug release over 14 days, has high tensile strength and
suitable cytocompatibility on L929 (mouse fibroblast) cell and created a suitable area for the
proliferation of fibroblast cells. Consequently, the application of metformin and pioglitazone-loaded
chitosan/gelatin/PCL nanofibrous scaffolds to a diabetic wound area offer high bioavailability,
fewer systemic side effects, and reduced frequency of dosage and amount of drug
Drying kinetic analysis of municipal solid waste using modified page model and pattern search method
This work studied the drying kinetics of the organic fractions of municipal solid waste (MSW) samples with different initial moisture contents and presented a new method for determination of drying kinetic parameters. A series of drying experiments at different temperatures were performed by using a thermogravimetric technique. Based on the modified Page drying model and the general pattern search method, a new drying kinetic method was developed using multiple isothermal drying curves simultaneously. The new method fitted the experimental data more accurately than the traditional method. Drying kinetic behaviors under extrapolated conditions were also predicted and validated. The new method indicated that the drying activation energies for the samples with initial moisture contents of 31.1 and 17.2 % on wet basis were 25.97 and 24.73 kJ mol−1. These results are useful for drying process simulation and industrial dryer design. This new method can be also applied to determine the drying parameters of other materials with high reliability
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