Processing properties of polypropylene with a minor addition of silicone oil

2010 ◽  
Vol 50 (7) ◽  
pp. 1340-1349 ◽  
Author(s):  
Wei Zhang ◽  
Sarang Deodhar ◽  
Donggang Yao
Keyword(s):  
Silicone Oil ◽  
Minor Addition ◽  
A Minor ◽  
Processing Properties

The Refinement of the Nanoporous Copper by Adding Third Elements

2014 ◽  
Vol 783-786 ◽  
pp. 1986-1989
Author(s):  
Zhen Hua Dan ◽  
Feng Xiang Qin ◽  
Nobuyoshi Hara
Keyword(s):  
Lower Surface ◽  
Pore Sizes ◽  
Surface Diffusivity ◽  
Minor Addition ◽  
Cu Alloys ◽  
Nanoporous Copper ◽  
Order Of Magnitude ◽  
A Minor ◽  
Trace Formation ◽  
Nanoporous Structures

Fine nanoporous copper was fabricated from the amorphous Ti-Cu alloys with a minor addition of silver in 10 mM HF solutions. The pore sizes decreased from 100 nm to 12 nm with the increase of the Ag contents in comparison of Ti60Cu40 ribbons free of Ag. With increasing of the dealloying time, the sizes of the nanopores and ligaments increased for the nanostrucutres on Ti60Cu38Ag2 ribbons since the segregation of the Ag phase which triggered the galvanic dissolution of the adjacent Cu matrix in form of micro-couplings to further coarsen the nanoporous Cu. On the contrary, the trace formation of the Ag phase on the Ti60Cu39Ag1 ribbons had a weak ability to motivate the galvanic dissolution, indicating by the constant pore sizes and slight decrease in the ligament sizes with the increase in the dealloying time. The refinement of the nanoporous structures was ascribed to the drastic decrease in the surface diffusivity. The decrease in the surface diffusivity due to the involvement of Ag with a lower surface diffusivity in comparison of Cu was more than one order of magnitude. The involvement of Ag adatoms restricted the diffusion of Cu adatoms in the interface regions in the inward and outward directions.

scholarly journals Self-cured polymers from non-drying oil

2008 ◽  
Vol 2 (4) ◽  
pp. 285-293
Author(s):  
Fahmina Zafar ◽  
◽  
Syed Marghoob Ashraf ◽  
Sharif Ahmad ◽  
◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Phthalic Anhydride ◽  
Chemical Corrosion ◽  
Spectral Techniques ◽  
Drying Oil ◽  
Minor Addition ◽  
Pongamia Glabra ◽  
Physico Chemical ◽  
Ft Ir ◽  
A Minor

Pongamia glabra seed oil (PGSO) – a non-edible, non-drying oil; a sustainable resource has found application as alkyds, epoxies and polyesteramides in paints and coatings. Generally, PGSO based polymeric coatings are obtained by curing at elevated temperature. Efforts have been made to cure PGSO at room temperature by simple route modification. Self-cured Pongamia glabra oil based on polyesteramide (APGPEA) resin was synthesized by the reaction between Pongamia glabra oil modified fatty amide diol (HEPGA) with polystyrene co-maleic anhydride (SMA). After complete synthesis of APGPEA, phthalic anhydride modified polyesteramide (APGPEAPh) was synthesized in situ by a minor addition of phthalic anhydride (PA) to APGPEA in order to improve the performance of the latter. The effect of the SMA and PA introduction on properties of PGPEAPh film was also investigated. The physico-chemical characteristics of both resins were obtained by standard laboratory methods. The structural elucidation of these resins was carried out by FT-IR, 1H-NMR and 13C-NMR spectral techniques. The thermal behavior was studied by TGA. Curing was studied by DSC and FT-IR techniques. It was observed that APGPEA and APGPEAPh resins significantly improve the drying property in contrast to the previously reported polyesteramides cured at high temperature. Physico-mechanical and chemical/corrosion resistance tests of APGPEAPh coatings showed that the presence of phthalic anhydride in APGPEA enhanced the physico-mechanical and corrosion resistance considerably. The APGPEAPh resin appears to be sustainable aspirant biomaterials for anticorrosive surface coatings which may substitute polymers obtained from petroleum, potentially scarce resource.

Formation and Compression Behavior of Two-Phase Bulk Metallic Glasses with a Minor Addition of Aluminum

2011 ◽  
Vol 28 (3) ◽  
pp. 036103 ◽  
Author(s):  
Hai-Tao Zong ◽  
Ming-Zhen Ma ◽  
Xin-Yu Zhang ◽  
Li Qi ◽  
Gong Li ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Two Phase ◽  
Compression Behavior ◽  
Minor Addition ◽  
A Minor

Effect of a Dispersion of Gelled Polymer Particles on Viscoelastic Properties of a Linear Polymer

1968 ◽  
Vol 41 (5) ◽  
pp. 1132-1139 ◽  
Author(s):  
Zvi Rigbi
Keyword(s):  
Small Volume ◽  
Volume Fraction ◽  
Rubber Industry ◽  
Crosslinked Polymer ◽  
Synthetic Rubber ◽  
Small Volume Fraction ◽  
A Minor ◽  
Processing Properties ◽  
Styrene Butadiene ◽  
Acrylonitrile Polymer

Abstract In the rubber industry, it has often been observed that dispersion of a relatively small volume fraction of a crosslinked polymer into a linear high polymer improves processability of the latter markedly. Thus, S. P. rubbers of exceptional processability are produced by coagulation of untreated latex mixed with a minor proportion of prevulcanized latex, the latter remaining in the form of discrete particles during subsequent processing operations. Similar effects are produced in the synthetic rubber industry when SBR crosslinked by means of divinyl benzene (SBR 1009 and similar grades) is mill-mixed with “straight” styrene-butadiene copolymer. In another case, a highly gelled butadiene-acrylonitrile polymer is used to enhance processing properties of oil-resistant rubbers.

scholarly journals The Anatomy of Consonance/Dissonance: Evaluating Acoustic and Cultural Predictors Across Multiple Datasets with Chords

2021 ◽  
Vol 4 ◽  
pp. 205920432110304
Author(s):  
Tuomas Eerola ◽  
Imre Lahdelma
Keyword(s):  
Current Model ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Spectral Envelope ◽  
Underlying Structure ◽  
Good Prediction ◽  
Cultural Predictors ◽  
Minor Addition ◽  
A Minor ◽  
Consonance And Dissonance

Acoustic and musical components of consonance and dissonance perception have been recently identified. This study expands the range of predictors of consonance and dissonance by three analytical operations. In Experiment 1, we identify the underlying structure of a number of central predictors of consonance and dissonance extracted from an extensive dataset of chords using a hierarchical cluster analysis. Four feature categories are identified largely confirming the existing three categories (roughness, harmonicity, familiarity), including spectral envelope as an additional category separate from these. In Experiment 2, we evaluate the current model of consonance/dissonance by Harrison and Pearce by an analysis of three previously published datasets. We use linear mixed models to optimize the choice of predictors and offer a revised model. We also propose and assess a number of new predictors representing familiarity. In Experiment 3, the model by Harrison and Pearce and our revised model are evaluated with nine datasets that provide empirical mean ratings of consonance and dissonance. The results show good prediction rates for the Harrison and Pearce model (62%) and a still significantly better rate for the revised model (73%). In the revised model, the harmonicity predictor of Harrison and Pearce’s model is replaced by Stolzenburg’s model, and a familiarity predictor coded through a simplified classification of chords replaces the original corpus-based model. The inclusion of spectral envelope as a new category is a minor addition to account for the consonance/dissonance ratings. With respect to the anatomy of consonance/dissonance, we analyze the collinearity of the predictors, which is addressed by principal component analysis of all predictors in Experiment 3. This captures the harmonicity and roughness predictors into one component; overall, the three components account for 66% of the consonance/dissonance ratings, where the dominant variance explained comes from familiarity (46.2%), followed by roughness/harmonicity (19.3%).

Influence of the Sand Addition on the Processing, Properties and Microstructure of Red Ceramic

2010 ◽  
Vol 660-661 ◽  
pp. 801-806 ◽  
Author(s):  
Carlos Maurício Fontes Vieira ◽  
Luiz Fernando Teixeira Queiroz ◽  
Sérgio Neves Monteiro
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Water Absorption ◽  
Rupture Strength ◽  
Ceramic Body ◽  
Minor Amount ◽  
A Minor ◽  
Processing Properties ◽  
Scanning Electron

This work has as its objective to add sand, up to 25 wt.%, to a clayey ceramic body used for roofing tiles fabrication. Specimens were prepared by extrusion and fired at 850oC. The evaluated properties were: plasticity, water absorption and flexural rupture strength. The microstructure of the fired ceramic was evaluated by scanning electron microscopy. The results indicated that the sand improved the evaluated properties of the ceramic as well as its processing. The microstructure of the ceramic presented a minor amount of porosity as a function of the sand addition.

The Temperature Paradox and Russell’s Analysis of the Definite Determiner

2016 ◽  
Vol 47 (4) ◽  
pp. 695-705
Author(s):  
Casper Storm Hansen
Keyword(s):  
Correct Prediction ◽  
Montague Grammar ◽  
Minor Addition ◽  
Wrong Prediction ◽  
A Minor

Lasersohn (2005) has argued that the use of Russell’s analysis of the definite determiner in Montague Grammar, which is responsible for giving the correct prediction in the case of the temperature paradox, is also responsible for giving the wrong prediction in the case of the Gupta syllogism. In this article, I argue against this claim and show that the problem with the Gupta syllogism can be solved by making a minor addition to Montague Grammar. This solution is one that Lasersohn discusses but rejects. I show that his critique of it is ill- founded.

Automatic calculation of the sensitivity of Bayesian fisheries models to informative priors

2005 ◽  
Vol 62 (5) ◽  
pp. 1028-1036 ◽  
Author(s):  
Russell B Millar ◽  
Wayne S Stewart
Keyword(s):  
Exponential Family ◽  
Stock Assessment ◽  
Reproductive Rate ◽  
Model Parameters ◽  
Minor Addition ◽  
Ricker Model ◽  
Log Normal ◽  
A Minor ◽  
Us West ◽  
Derivatives Of

The derivatives of Bayes estimators, with respect to changes in hyper-parameters of the prior density, are posterior covariances. Hence, these derivatives can be readily estimated from a posterior sample and the calculation is shown to be especially straightforward for parameters having a marginal prior that is of exponential family form. Three examples are given. The first fits a Ricker curve to stock–recruit data and, for several important management parameters, examines the sensitivity of the Bayes estimates to the informative log-normal priors placed on the maximum annual reproductive rate and density-dependent compensation parameters. Using the WinBUGS software, it is demonstrated that these derivatives can easily be estimated by a minor addition to the program code. The utility of the estimated sensitivities is examined by refitting the Ricker model using a range of different priors. The second example revisits a hierarchical model that was used to perform a meta-stock assessment on several US West Coast rockfish (Sebastes spp.) stocks, and examines the sensitivity of the Bayes estimate of bulk catchability to the hyper-prior. The final example looks at an example from the literature and uses summary statistics provided therein to determine the sensitivity of model parameters to their prior means.

Method for Recovering Lost Ultrasonic Information Using the Echo-intensity Mean

2018 ◽  
Vol 40 (5) ◽  
pp. 283-299
Author(s):  
Sara Bahramian ◽  
Craig K. Abbey ◽  
Michael F. Insana
Keyword(s):  
High Spatial Frequency ◽  
Small Scale ◽  
Echo Intensity ◽  
Pulse Envelope ◽  
Tissue Impedance ◽  
Minor Addition ◽  
Simple Change ◽  
Mean And Variance ◽  
A Minor ◽  
Available Information

The axial resolution of a B-mode (or intensity) image is limited by the bandwidth of the pulse envelope. In this report, we investigate the source of this limitation by examining the transfer of high-resolution information from the tissue impedance variance throughout the imaging process. For that purpose, we express the mean and variance of the echo-intensity signal as a linear system to track the flow of object information along the image-formation chain. The results reveal how demodulation influences the available information by discarding high spatial-frequency information. This analysis further points to a simple way to recover lost information with only a minor addition to signal processing. Software phantoms are used to show that under ideal conditions, information from small-scale high-contrast reflectors, such as microcalcifications, can be significantly enhanced with this simple change to echo processing.

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