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1000 tulosta hakusanalla Philippa Perry

A Kid's Guide to Plants of the Great Lakes Region: Including Southern Ontario, with Cool Facts, Activities and Recipes

A Kid's Guide to Plants of the Great Lakes Region: Including Southern Ontario, with Cool Facts, Activities and Recipes

Philippa Joly

Harbour Publishing
2025
nidottu
A middle-grade-friendly introduction to flora of the Great Lakes Region--including Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania and Wisconsin-- with outdoor activities, games and quizzes that make learning about nature fun Great for families and educators. Get dirty digging up roots. Crouch down to look closely at a carnivorous sundew dissolving a dragonfly. Make an elderberry concoction. Test your plant ID skills with a winter twig quiz. Make a soothing plantain salve to treat an itch. Learn which berries you can eat and which to avoid. Time spent outdoors encourages children's self-confidence and independence, increases attention span and physical well-being, and fosters care for the environment. With the increasing intrusion of technology into daily life, and the challenges of climate chaos, it has never been more essential for parents and educators to encourage kids to engage with the natural environment. Plants are everywhere, even in urban areas where parks, empty lots and backyards offer the opportunity to learn from and connect to nature. Drawing on her years of experience as and outdoor educator, Philippa Joly features fifty richly illustrated plant profiles, including information on identification and ecology, cultural uses, and fun activities--all in a way that is accessible and interesting to readers of all ages.
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Probing Unconventional Transport Regimes in Delafossite Metals

Probing Unconventional Transport Regimes in Delafossite Metals

Philippa H. McGuinness

Springer International Publishing AG
2022
sidottu
This thesis describes in-depth studies of the remarkable electronic transport within the ultrahigh conductivity delafossite metals PtCoO_2 and PdCoO_2 using the tool of focused ion beam (FIB) microstucturing. Despite being first synthesised over 50 years ago, important questions remain regarding both the origin of the unusually high conductivity of these compounds and the consequences of their unique properties for unconventional electronic transport, such as that within the ballistic regime. The thesis explores both these areas.High-energy electron irradiation is used to examine the effects of deliberately introducing point defects into PdCoO_2 and PtCoO_2, demonstrating that the extremely low resistivity of these materials stems from an extreme purity as high as 1 defect in 120,000 atoms, rather than a novel scattering suppression mechanism. In addition, studies of the electronic transport in micron-scale squares of these metals show that their broadly hexagonal Fermi surfaces lead not only to long range ballistic behaviour but novel ballistic regime phenomena which cannot be observed in materials with a higher-symmetry Fermi surface.
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Probing Unconventional Transport Regimes in Delafossite Metals

Probing Unconventional Transport Regimes in Delafossite Metals

Philippa H. McGuinness

Springer International Publishing AG
2023
nidottu
This thesis describes in-depth studies of the remarkable electronic transport within the ultrahigh conductivity delafossite metals PtCoO_2 and PdCoO_2 using the tool of focused ion beam (FIB) microstucturing. Despite being first synthesised over 50 years ago, important questions remain regarding both the origin of the unusually high conductivity of these compounds and the consequences of their unique properties for unconventional electronic transport, such as that within the ballistic regime. The thesis explores both these areas.High-energy electron irradiation is used to examine the effects of deliberately introducing point defects into PdCoO_2 and PtCoO_2, demonstrating that the extremely low resistivity of these materials stems from an extreme purity as high as 1 defect in 120,000 atoms, rather than a novel scattering suppression mechanism. In addition, studies of the electronic transport in micron-scale squares of these metals show that their broadly hexagonal Fermi surfaces lead not only to long range ballistic behaviour but novel ballistic regime phenomena which cannot be observed in materials with a higher-symmetry Fermi surface.
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Heißes Glas

Heißes Glas

Philippa Beveridge; Ignasi Domenech Vives; Eva Pascual i Miro

Haupt Verlag AG
2004
sidottu
Seit der Bronzezeit bis heute ist Glas ein hoch geschätztes Material und ein beliebter Werkstoff, da seine besonderen Eigenschaften die Kreation von Objekten mit unnachahmlicher Plastizität ermöglichen, die mit anderen Materialien und Techniken nie erreicht wird. Mit der Glaskunst wurden zunächst Edelsteine nachgeahmt, aber schon bald entwickelte sich eine ganz eigene Gestaltungssprache des Glases, die neben den speziellen Techniken der Glasverarbeitung auch Techniken aus anderen kunsthandwerklichen Bereichen, wie der Keramik, dem Mosaik oder der Edelsteinbearbeitung aufnahm. Nach einem kurzen Ausflug in die Geschichte des Glases werden der Werkstoff, die benötigten Materialien sowie die Werkzeuge für die einzelnen Arbeitsschritte vorgestellt. Detailliert und praxisorientiert geht das Autorenteam auf die Verfahren und Brennzyklen des Schmelzens, Senkens, Gießens und auf die Arbeit mit Glaspaste ein - Kenntnisse, die für die Bearbeitung von Glas von entscheidender Bedeutung sind. Zur praktischen Umsetzung der gelernten Techniken zeigt das letzte Kapitel Schritt für Schritt die Herstellung unterschiedlicher Werkstücke - einen Lampenschirm, eine Schale mit eingeschlossenen Motiven oder eine dekorative Vase.
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