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.
Results
Showing 1 to 20 of 24 for “"Rosin"”.
-
Separation of rosin and fatty acids from tall oil by selective chlorination
Tall oil is a mixture of rosin acids, fatty acids, and non-acids resulting from acidification of the soaps separating out from the kraft pulp process evaporator liquor. The present uses of tall oil center chiefly around its fatty acid content, but are limited for some purposes because of the rosin …
-
The Release of Calcium, Fluoride, and Phosphate Ions from Ion Permeable Microcapsules in a Rosin Varnish
… solvated were encapsulated and loaded into a rosin varnish. This approach was unique because it had the potential for providing bioavailable ions for remineralization. By altering certain variables, it was determined that the ions studied in this experiment were capable of diffusing from the …
-
Study of dynamics of airflow and aerosol transport and deposition in human upper airways using large-eddy simulations
… analysis using uniform, Gaussian, and Rosin-Rammler distributions, the Rosin-Rammler yielded the lowest deposition, while the uniform had the highest. Simulation of the realistic breathing cycle with monodisperse particles shows that deposition occurs almost entirely during the …
-
Optimization of spodumene flotation with fatty acid collectors
… time; and (3) the level/type of rosin acid impurities in commercial TOFA collectors. A Central Composite Design (CCD) of experiment investigated conditioning parameters and pH behaviour, which later guided collector adsorption studies using Time of Flight-Secondary Ion Mass …
-
ΣΧΕΣΗ ΜΕΤΑΞΥ ΤΗΣ ΕΙΔΙΚΗΣ ΕΝΕΡΓΕΙΑΣ ΛΕΙΟΤΡΙΒΗΣΗΣ ΨΑΘΥΡΩΝ ΥΛΙΚΩΝ ΜΕ ΤΟ ΧΡΟΝΟ ΛΕΙΟΤΡΙΒΗΣΗΣ, ΤΟ ΜΕΓΕΘΟΣ ΤΟΥ ΠΡΟΙΟΝΤΟΣ ΚΑΙ ΤΑ ΜΗΧΑΝΙΚΑ ΧΑΡΑΚΤΗ...
… THE VARIATION OF THE GATES-GAUDIN-SCHUHMANN AND ROSIN-RAMMLER SIZE DISTRIBUTION PARAMETERS, OF THE GRINDING PRODUCT WITH GRINDING TIME, C) THE VARIATION OFVOLUME SPECIFIC ENERGY OF MATERIALS WITH THE NUMBER OF BLOWS OF THE HAMMER OF THE MEASURING APPARATUS OF PROTDYAKONOV STRENGTH COEFFICIENT, D) …
-
Análisis de la influencia de los modelos de distribución de tamaños de partículas en la determinación de consumos energéticos en molienda mediante el método Bond
… granulométricas que siguen la ecuación dada por Rosin-Rammler y de varios métodos de interpolación y/o representaciones. La bibliografía en el campo de análisis de distribución de tamaños de partículas menciona los modelos de Gates-Gaudin-Schuhmann y Rosin-Rammler , haciendo una comparativa entre …
-
A Chemical and Morphological Study of Grindelia Squarrosa (Pursh) Dunal
A species of Grindelia known as Gum, Rosin or Tar weed, is of common occurrence on dry banks and sandy soils in various parts of South Dakota. During day seasons it attains such a dense growth in closely cropped pastures that horses feeding in them have their heads and manes covered with a black …
-
CFD Modelling of the Mixture Preparation in a Modern Gasoline Direct Injection Engine and Correlations with Experimental PN Emissions
… models were calibrated in conjunction with the Rosin–Rammler (RR) mono-modal droplet size distribution. RD outperformed KH–RT in terms of prediction when comparing numerical spray tip penetration and droplet size characteristics to the experimental counterparts. Then, the modelling protocol …
-
The atomisation of detergent slurries
… The results obtained were based upon the Rosin-Rammler distribution model and the Size Analyser provided a direct print-out of size distribution and the parameters characterising it. A Spraying System nozzle, AAASSTC8-8, produced the optimum spray distribution with the detergent slurry at …
-
Entwicklung einer simulationsgestützten Methodik zur Auslegung von Hochtemperatur-Mikrowellenprozessen
In der vorliegenden Arbeit werden verfahrenstechnisch nutzbare materialspezifische Parameter definiert, mit deren Hilfe die energetische Effizienz von Hochtemperatur-Mikrowellenerwärmungsprozessen über einen großen Temperaturbereich abgeschätzt und optimiert werden kann. Für dieses Ziel werden …
-
Instabilities and transport in magnetized plasmas
In a magnetized plasma, naturally occurring pressure anisotropies facilitate in- stabilities that are expected to modify the transport properties of the system. In this thesis we examine two such instabilities and, where appropriate, their effects on transport. First we consider the collisional …
-
CFD Modelling of Down-Sized GDI Engines: Fuel Injection, In-Cylinder Phenomena and Correlation to Engine-Out PN Emissions
… was modelled using a combination of initial Rosin-Rammler droplet size distribution and the Reitz-Diwaker secondary break-up model. An initial statistical variable screening methodology was followed to minimise the number of calibration factors, reducing them from six to three. These were the …
-
The use of serface fuintionalised silica nano-particlate powders for the identification of gunshot residues from fingerprints
… carbon black, iron oxide, lycopodium spores and rosin are used to enhance fingerprint left at the scene of crime. More recently nanoparticles have been demonstrated to be highly effective for the enhancement of the fingerprints [2]. Silica nano-particulates of defined size and shape were …
-
Różnice w behawiorze i cechach muszli form barwnych wstężyka gajowego Cepaea nemoralis (L.) a preferencje pokarmowe ptaków i drobnych ssaków
Ewolucja i utrzymywanie się polimorfizmu ubarwienia muszli w populacjach wstężyka gajowego C. nemoralis to klasyczny problem ekologii ewolucyjnej. Selekcja drapieżnicza uważana jest za jeden z najważniejszych czynników kształtujących tę różnorodność. Dotąd nie znaleziono klarownego wzorca …
-
Managing resource constraints in firms
Small, new or foreign firms inherently have a lower likelihood of surviving in the market. Frequently, this is due to the existence of resource constraints, such as the liabilities of smallness, newness or foreignness. Consequently, to survive in the market, small, new or foreign firms need to find …
-
A Survey of the Development of the Green River Community College and the Need for a Handbook in the Adult Evening School Program
It was the purpose of this study to trace the history of the Green River Community College and to show the need for the development of a handbook concerned with appropriate method for the adult student.
-
Fully Turbulent Wakes at Low Reynolds Numbers: the Case of the Thin Flat Plate
The wake of a thin flat plate normal to uniform flow exhibits unique behaviour, with much research suggesting it undergoes a fundamentally different Reynolds number-dependent tran-sition process to turbulence than wakes behind canonical geometries. Moreover, there is vast disagreement over the …
-
Development and testing of an evidence-based tool to support adoption and implementation of the National Healthy Food and Drink Policy
Background: In 2016, a voluntary National Healthy Food and Drink Policy was released to improve the healthiness of food and drinks for staff and visitors in New Zealand health sector organisations. However, there were no resources developed to support policy implementation. Aim: To develop …
Page 1 of 2