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Showing 1 to 20 of 24 for “"sheen"”.
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Composition Effects on Sheen and Spread Rate of an Interior Flat, One Coat Latex Paint Formulation
… package, and rheology modifier type. The sheen value, relative light scattering, and spread rate were the main measurements conducted in order to judge formulation improvement.</p> <p>Complications with the spread rate procedure forced its adaptation in order to collect less variable data …
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Identification and validation of screening methods for assessment of the sheening potential of embedded oil in sediments
… impacted with petroleum hydrocarbons (oil) may sheen due to ebullition-driven transport or sediment disturbance. The goal of this project was to develop a screening method that can be deployed on a small autonomous watercraft that will provide a reliable indication of sheening potential of …
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Interaction, corrective feedback, and the development of lexical stress
… of L2 development (Li, 2010; Mackey & Goo, 2007; Sheen & Ellis, 2011). However, to date, their impact on learners’ phonological development has received relatively little attention. In order to fill this gap, the current study examined the effects of recasts on the development of lexical stress in …
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A comparison of two membrane filter techniques for the enumeration of total coliforms in potable water
… colonies failed to produce a characteristic sheen but were verified as coliforms. It was concluded that all coliforms were effectively killed at chlorine contact times greater than two minutes and free chlorine residuals greater than 0.13 mg/l, in chlorine demand-free water. Free chlorine …
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Escherichia coli Mastitis in the Dairy Bovine
… coli will usually produce a green metallic sheen on eosin methylene blue agar. One hundred and twenty-nine milk samples or gram-negative isolates from milk samples were used to compare eosin methylene blue agar to a commercial biochemical test strip (the accepted standard). There was an …
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Quantitative Laser-based Assessment of Top of Rail Friction Modifiers for Railroad Application
… empirically by manually observing the sheen of the rail and tactically sensing any residues that may be present on the rail. Often performed by experienced railroad engineers, such methods are highly subjective and do not provide a quantitative assessment of how lubricated or …
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Ecosystem Functional Consequences of Top Predator Mortality Due to the Invasive Shrub, Lonicera maackii
… maackii packs. I also found there to be an oily sheen on the water surface of mesocosms containing L. maackii leaf litter, which could hinder gill-breathing by amphibians. Relatively high invertebrate densities and diversity may have served as a buffer for lower trophic levels, such that they …
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Characterisation of Ovine and Human Vertebral Endplates using X-ray Microtomography: the Effects of Degeneration on Structure.
Back pain is a significant and debilitating problem worldwide. It can be caused by several factors, but the cause of pain is only identified successfully in a minority of cases. There has been significant evidence indicating that the vertebral endplate (VEP) plays a major role in low back pain. The …
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Oral Corrective Feedback, Individual Differences, and L2 Acquisition of French Past Tenses
… output-prompting strategy (Ellis, 2006; Ellis & Sheen, 2011). Drawing on the Interaction hypothesis (Long, 1981a, 1983b, 1996) both strategies can be considered a type of focus-on-form. The effectiveness of oral corrective feedback was examined in relation to the acquisition of two French past …
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Establishing a Scale to Measure the Need for Attention (NFA)
Need for attention (NFA) refers to the tendency of individuals to require and search for interpersonal recognition and acknowledgement. This dissertation uses psychographic methods to develop a scale establishing the unique features of NFA that differentiate it from other personality traits, …
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GCD10 and GCD14 Proteins Facilitate Tomato Bushy Stunt Viral (TBSV) RNA Replication in Saccharomyces Cerevisiae
Tomato bushy stunt virus (TBSV) is a positive-sense RNA virus and its genome replication requires two viral proteins, p33 and RNA-dependent RNA polymerase p92. Previous studies showed that the 5 untranslated region (5UTR) of the genome is important, albeit not essential, for viral RNA replication …
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Calcium -dependent protein kinases are myristoylated and associated with different membranes in Arabidopsis thaliana
<p>In plants, calcium-dependent protein kinases (CDPKs) are the predominant calcium-stimulated kinases and are known to be involved in many cellular processes. CDPK enzymatic activity previously has been detected in many locations in plant cells, including the membrane fraction. However, little is …
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Mechanism of Action of Antiestrogens in Breast Cancer and Uterine Cells (Estrogen Receptor)
The actions of antiestrogen (AE) on growth and protein synthesis were studied in human breast cancer cells and rat uterus. Antiestrogens bind with high affinity to the estrogen receptor (ER) and to additional microsomal binding sites to which estrogens do not bind called antiestrogen binding sites …
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Theoretical and Experimental Study of Gravity Waves in the Ionosphere Observed With Incoherent Scatter Radar
In the Worldwide Atmospheric Gravity Wave Study (WAGS) campaign, the source-response relationship between the auroral activities and the gravity waves observed in the ionosphere was studied. Ionospheric parameters observed with the incoherent scatter radars at Sondrestrom and Millstone Hill were …
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Reactor Static Optimization With Integral System Equations
An algorithm is developed for the optimality analysis of thermal reactor assemblies with a mathematical programming method. The neutron balances of the systems under consideration are transformed into integral equations by using Green's functions. Two-group, two-dimensional Green's functions for …
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A microsopic analysis of s 197 in the outsourcing context
Outsourcing is a growing modern method of conducting business. The reach of s 197 of the Labour Relations Act in outsourcing has sparked debate and controversy in the legal community. Albeit settled that s 197 may apply to initial outsourcing transactions, a lengthy litigation battle resulted in …
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A UHF Multimode Array Feed for the Westford Radio Telescope
A novel UHF Multimode Array Feed (MMAF) has been created for MIT’s Westford Radio Telescope. The MMAF is a dual-linear focal plane array installed concentrically with the existing QRFH feed on the telescope, enabling a combined system capable of transmit or receive on UHF radar and satcom …
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Numerical modeling of microstrip circuits and antennas
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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