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 70 for “"DCB"”.
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Exploration of Wood DCB Specimens Using Southern Yellow Pine for Monotonic and Cyclic Loading
… the flat wood double cantilever beam (DCB) as a valid means for testing Mode I fracture energy in wood adhesive bonds. Southern yellow pine (SYP) adherends were used with epoxy and phenol formaldehyde (PF) impregnated films, providing two systems with different characteristics for …
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Simultaneous removal of ortho-dichlorobenzene and ethanol vapors in a biotrickling filter : experimental results and process modeling
… known to utilize ortho-dichlorobenzene (o-DCB) as sole carbon and energy source, a culture was developed on o-DCB/ethanol mixtures and a BTF unit was developed and operated with air streams carrying o-DCB and ethanol vapors. Simultaneous removal of the two compounds was observed in …
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Delaunay Configuration B-Splines
… multivariate DMS-splines, we address Neamtu’s DCB-splines. He defined two variants that we refer to as the nonpooled and the pooled approach, respectively. Regarding these spline spaces, we contribute the following results. We prove that, under suitable assumptions on the knot set, both …
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Development of image based crack measurements, to investigate delamination in different weave Fibre Reinforced Polymers
… the test specimens. The Double Cantilever Beam (DCB) test was used to measure the Mode I fracture toughness, following the standardised test method ASTM D5528. DCB tests requires two hinge blocks to be bonded to the specimens and is conducted using the Zwick machine which actively measures force …
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Beneficiation of selected pesticides and an antihyperlipidemic agent via cyclodextrin complexation and co-crystallization
… methyl- 2,5-dichlorobenzoate (fungicide, DCB) and fenthion (insecticide), as well as the medicinal compound acipimox (lipid-lowering agent) were selected for study in this context. The cyclodextrin (CD) complexes γ-CD/DCB, 2,6-dimethylated-β-CD/DCB, β-CD/fenthion, permethylated …
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Cellular Calcium Movements and Excitation-Contraction Coupling in Guinea Pig Atria
… 8uM $3\sp\prime, 4\sp\prime$-di-chlorobenzamil (DCB), the average increase in paracellular calcium was 9.02 + 1.25 uM. DCB reduces the normal calcium efflux by 61.6 + 7.3%, n = 4, p $<$ 0.005. (Statistical analysis used paired one tail T-test.) 10 nM Ryanodine treated-tissue showed an increased …
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Characterizing the Durability of PF and pMDI Adhesive Wood Composites Through Fracture Testing
… were assessed using the double-cantilever beam (DCB) method of fracture testing. The relative durability of phenol-formaldehyde (PF) and isocyanate (pMDI) adhesives was compared using a 2-hour boil test and an environmental test. The feasibility of using oriented strandboard (OSB), oriented …
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Multi-modality Imaging to Determine the Role of Calcification and Inflammation on Restenosis Rates Following Lower Limb Angioplasty
… arterial disease, and drug-coated balloons (DCB) dampen the inflammatory process, in an atherosclerotic rabbit model. In the prospective clinical study arm (CA), 50 patients with symptomatic PAD underwent 18F-NaF and 18F-FDG PET imaging of the superficial femoral artery (SFA), pre- and …
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Developing novel therapeutic agents for Acanthamoeba infection and investigating the process of encystment
… herbicides including 2,6-dichlorobenzonitrile (DCB) and isoxaben were tested to target the biosynthesis of cellulose in the cyst form and also to evaluate their effects on the formation of protocyst of Acanthamoeba. The results of this study showed that the DCB at a high concentration of 500 μM, …
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Fairness in a data center
… The resulting technology, Data Center Bridging (DCB), is a new set of standards defined by the IEEE to make Ethernet lossless even in the presence of congestion. As with any new networking technology, it is critical to analyze how the different protocols within DCB interact with each other as …
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Interfacial strength development in thermoplastic resins and fiber-reinforced thermoplastic composites
… was measured using a double cantilever beam (DCB) interlaminar fracture toughness test. The fracture mechanisms were determined to be different in the healed DCB specimen than the virgin specimen due to resin flow at the crack plane during the healing tests. The CT test was found suitable for …
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Strain-rate Dependent Fracture Load Prediction of Lead-free Solder Joints
… of the strain rate and phase angle using DCB specimens. A drop tester was designed and built to perform the experiments at higher strain rates. Jci increased about 70% from quasi-static to strain rates of 0.05-1 s-1 (intermediate strain rates), and then decreased by more than 67% from …
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Dual-Chambered Membrane Bioreactor for the Dynamic Co-Culture of Dermal Stratified Tissues
… we introduced a novel dual-chambered (DCB) bioreactor system to study stratified tissues. For this, crosslinking density of the keratin-based hydrogels was used to fine tune the transport properties of membranes for potential use in guided tissue regeneration applications. Then, we …
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Stability, transport and applications of polyaphrons in porous media
… novel procedure on removing 1,2-dichlorobenzene (DCB) from a sand column. The results show that our procedure effectively prevents downward migration of DCB during surfactant flooding. Depending on the injection strategy and initial distribution of DCB, as mush as 97% of the DCB entrapped in the …
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A chemical and mechanical evaluation of interfacial fracture in dicyandiamide cured epoxy/steel adhesive systems
… content. Static double cantilever beam (DCB), fatigue DCB, and notched coating adhesion (NCA) interfacial fracture performances all increased. X-ray photoelectron spectroscopy (XPS) and tunneling electron microscopy (TEM) analyses of the failed specimens revealed that chemical changes …
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Mechanical Properties and Durability of Natural Rubber Compounds and Composites
… was measured using a double cantilever beam, DCB. This type of testing arrangement exhibits a plane strain condition and resulted in crack growth rates two orders of magnitude faster than traditional plane stress testing geometries. To validate the DCB specimens, an investigation into the …
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Hindered urea bond for the design of dynamic materials
Dynamic covalent bonds (DCBs) featuring reversible bonding/debonding properties have found various applications in dynamic materials designs such as self-healing, malleable, shape-memory or environmentally-adaptive materials. However, most DCBs developed so far require either catalyst or harsh …
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The Effect of Financial Leverage on Commercial Banks’ Profitability in Tanzania
… 89.9%, 87.7% and 80.2% for CRDB, NMB and DCB plc respectively. Furthermore the profitability measured in terms of ROA for CRDB, NMB and DCB are 3.7%, 5.1% and 3.7% respectively while that which is measured in terms of ROE are 25.4%, 29.6% and 14.5% respectively as mean values. It was also …
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Exposure to hazardous air pollutants in homes
… carbon tetrachloride, p-dichlorobenzene (p-DCB), ethylbenzene, formaldehyde, methylene chloride, methyl tert-butyl ether (MTBE), styrene, trichloroethylene and tetrachloroethylene. Results indicate that Hispanics and non-Hispanic whites had median cumulative cancer risks (CCR) of 520×10-6 …
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Dynamic Mixed-Mode Fracture of Bonded Composite Joints for Automotive Crashworthiness
… test geometries as the double cantilever beam (DCB), asymmetric double cantilever beam (ADCB), single-leg bend (SLB), end-loaded split (ELS), and split cantilever beam (SCB) specimens. Symmetric versions of the DCB, SLB, and ELS specimens produced mode mixities of 0°, 41°, and 90° respectively, …
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