Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 106 for “"RCA"”.
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RCA: use and future possibilities
… paper emphasis on recycled concrete aggregate (RCA) and many characteristics of RCA. This paper studies RCA’s different properties. RCA’s replacement in the place of natural aggregate is discussed. The proper amount and researches done on RCA improvement have also been discussed for further in …
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Selection of castor with divergent concentrations of ricin and RCA using radial immunodiffusion
… is the presence of two toxic proteins, ricin and RCA. Ricin and RCA's presence in the endosperm of the seed creates potential health hazards to both producers and processors. The objectives of this research were to determine the range of ricin/RCA concentration in the USDA castor collection and to …
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A simplified constant-liquidity price index for U.S. commercial property based on the RCA database
This thesis builds on the endogenous relationship between transaction price and volume in commercial real estate markets in order to construct a simple "constant-liquidity price index" (SCLI) applicable to general transaction databases such as that of Real Capital Analytics Inc (a MIT/CRE member …
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Sensitive Detection of Foodborne E. coli O157:H7 by Dendrimer-aptamer Modified Microchannels - with RCA Signal Intensifications
… system with rolling circle amplification (RCA) is developed to detect E. coli O157:H7. In the proposed detection system, poly(amidoamine (PAMAM) dendrimers are immobilized onto inner surfaces of polydimethyl siloxane (PDMS) microchannels to avoid non-specific binding and to provide more …
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Regulation of Rubisco in Arabidopsis Thaliana Rca(-) Complemented With Arabidopsis Rubisco Activase Engineered at an ATP Binding Site
Q111E and Q111D showed rates of Rubisco activation greater than 42kD wild type and Q111S at ADP/ATP ratios known to exist in planta. Q111D showed a Rubisco activation rate at night time ADP/ATP greater than the 42kD wild type rate at zero ADP/ATP suggesting an altered response. Measurements of …
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Improving the thermal tolerance of photosynthesis in wheat
… activation state of Rubisco. Rubisco activase (Rca) is required to restore and maintain the catalytic activity of Rubisco. Rca has a relatively low temperature optimum; improving its thermal tolerance would maintain Rubisco activity and enhance photosynthesis at higher temperatures, with …
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Recycling waste concrete into road pavement aggregate
The use of recycled concrete aggregate (RCA) as a road pavement material in Australia is relatively recent and confined mainly to Victoria and New South Wales. Samples of RCA were taken at six, monthly intervals from a local producer of RCA. A range of tests was carried out to provide initial …
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Investigation on the Overall Performance of Recycled Concrete Affected by Alkali-Silica Reaction
… energy; thus, recycled concrete aggregates (RCA) have been proposed as a promising alternative to increase sustainability in new construction. In this context, many studies have been conducted over the past decades on the properties of RCA concrete. Recent studies have shown that suitable …
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Evaluation of lower quality recycled PCCP for Portland Cement Treated Base (PCTB)
With recycled concrete aggregates (RCA) becoming a more popular and cost effective alternative to virgin aggregate, the Kansas Department of Transportation (KDOT) looks to incorporate these aggregates into Portland cement treated base (PCTB). KDOT currently practices a freeze-thaw method that …
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Study of recycled concrete aggregate as filter media for phosphorus removal in synthetic wastewater
… and complex. Recycled concrete aggregate (RCA) may be an alternative solution for phosphorus removal. It can reduce pollution and landfill disposal by converting construction waste into valuable products. This study aims to investigate the physical and chemical characteristics of RCA that …
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Equivalent CO2 Emissions and Construction Costs of Buildings Designed Using Recycled Aggregate Concrete
… benefits of recycled concrete aggregate (RCA), compared with conventional aggregates, the use of these materials often results in significantly lower mechanical properties of the resulting RCA concrete, requiring increases in cement content or structural dimensions in order to obtain …
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Recycling Concrete for Sustainable Construction
… is to produce recycled concrete aggregate (RCA) and use this material in the reconstruction of buildings and roads. Producing and re-using RCA will reduce landfill waste and save energy by minimizing the production and transport of natural aggregates.The focus of this thesis is to quantify …
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Shrinkage & Modulus of Elasticity in Concrete with Recycled Aggregates
… produced using recycled coarse aggregates (RCA). Five types of coarse aggregates were used in this study, four of which were RCA. The main purpose of this research was to examine how different types and properties of coarse aggregate affected compressive strength, modulus of elasticity, and …
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Systems, models and algorithms for failure diagnosis in networked infrastructure
… diagnosis, also known as Root Cause Analysis (RCA). The goal of RCA is to localize faults with high accuracy in a timely manner using practical monitoring telemetry. There are two major challenges in designing such RCA solutions: (1) accurately modeling the behavior of the system and (2) using …
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Performance of composite sand cement brick containing recycled concrete aggregate and waste polyethylene terepthalate
… bricks using Recycle Concrete Aggregate (RCA) and Polyethylene Terephthalate (PET) waste bottles as sand aggregate replacement. RCA was obtained from crushed laboratory concrete cubes while PET bottles were collected around UTHM and Parit Raja areas. The objectives of this study are to …
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Analysis of Tanzania's Export Performance within Integration Blocks: a Revealed Comparative Advantage and Market Share Analysis Case Study of SADC.
… A Revealed Comparative Advantage (RCA) and Market Share Analysis for selected eight commodities were conducted. The RCA analysis was done based on the Balassa's Index which was developed in 1965. Export Data were obtained from the International Trade Centre (ITC) market analysis …
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Effects Of Fiber And Lithium On Mechanical Properties Of Concrete Made Fromrecycled Concrete Aggregate
… are re-using Recycled Concrete Aggregates (RCA) as construction material. The use of fiber reinforcement in Portland Cement Concrete (PCC) has recently become a popular option in concrete construction because of its influence on preventing segregation, reducing early shrinkage cracks and …
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Applying the Reference Condition Approach to bioassessment of Cape Breton Island streams
The reference condition approach (RCA) to bioassessment assesses the effect of human activity on ecosystems relative to sites that are relatively unexposed to such activity. This study uses the RCA to characterize the nature of relatively pristine streams on Cape Breton Island, Nova Scotia as a …
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High-volume recycled materials for sustainable transportation infrastructure
… of fine and coarse recycled concrete aggregates (RCA) were investigated. The feasibility of replacing 50% of Portland cement with industrial by-products and supplementary cementitious materials (SCMs) was also evaluated. Experimental program was conducted to quantify the effect of concrete mixture …
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Three Essays on the East Asian Miracle of Thailand
… the ""revealed"" comparative advantage index (RCA) introduced by Balassa in 1965, RCAs of manufacturing indicate that mostly labor-intensive manufactured products have dominated the manufactured exports of Thailand. Although there was a tendency that the pattern of comparative advantage would …
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