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2007

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Articles 3481 - 3510 of 79198

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Experimental Methods Of Assessment Of Pvd Coatings Properties, M Hagarová Dec 2007

Experimental Methods Of Assessment Of Pvd Coatings Properties, M Hagarová

Journal of Metals, Materials and Minerals

The paper investigates the properties of thin coatings deposited by Physical Vapour Deposition (PVD) technology. This is a modern technology of depositing thin coatings onto the surface of machine parts. Technological procedures of deposition of thin coatings undergo constant improvement. At the same time, new types of coatings are developed. These developments necessitate evaluation of structure, composition and properties of the coatings. The basic methods of determination of properties of thin coatings include determination of their thickness and hardness, structure and chemical analysis, adhesioncohesion and tribological properties.


Finite Element Analysis Study On Effect Of Indenter Tip Radius To Nanoindentation Behavior And Coatings Properties, N Panich, P Wangyao, S Surinphong, Y K. Tan, Y Sun Dec 2007

Finite Element Analysis Study On Effect Of Indenter Tip Radius To Nanoindentation Behavior And Coatings Properties, N Panich, P Wangyao, S Surinphong, Y K. Tan, Y Sun

Journal of Metals, Materials and Minerals

This paper mainly focuses on the study of factors that affect the nanoindentation process and the determination of mechanical properties of coating film using computational finite element (FE) analysis. Attempts have been made in order to show the effect of indenter tip radius on the nanoindentation process of both hard and soft coating systems. It has been proved that larger load is required to reach a specific penetration depth when the indenter tip radius increases. Besides, the change in tip radius led to a more severe effect on hard coating system compared to soft coating system. Furthermore, pile- up and …


Complete Issue Dec 2007

Complete Issue

Journal of STEM Teacher Education

No abstract provided.


The Videoconferencing Classroom: What Do Students Think?, A. Mark Doggett Dec 2007

The Videoconferencing Classroom: What Do Students Think?, A. Mark Doggett

Journal of STEM Teacher Education

The advantages of video conferencing in educational institutions are well documented. Scholarly literature has indicated that videoconferencing technology reduces time and costs between remote locations, fill gaps in teaching services, increases training productivity, enables meetings that would not be possible due to prohibitive travel costs, and improves access to learning (Martin, 2005; Rose, Furner, Hall, Montgomery, Katsavras, & Clarke, 2000; Townes-Young & Ewing, 2005; West, 1999). However, there are few studies that analyze the effectiveness of videoconferencing from the student’s perspective. Videoconferencing technology is often touted as a method to connect with previously inaccessible student populations, but does it adequately …


The Ecological Boundaries Of Six Carolina Bays: Community Composition And Ecotone Distribution, Lorrie Laliberte, James O. Luken, John J. Hutchens Jr., Kevin S. Godwin Dec 2007

The Ecological Boundaries Of Six Carolina Bays: Community Composition And Ecotone Distribution, Lorrie Laliberte, James O. Luken, John J. Hutchens Jr., Kevin S. Godwin

Biology

Community and environmental gradients within the ecological boundaries of Carolina bay wetlands may provide important information on the interaction between Carolina bays and associated uplands, and may also provide guidance for improved management. We established twelve 30-m transects on the sloping rims of each of six Carolina bays in northeastern South Carolina to characterize the community gradient, as well as important environmental factors producing this gradient. Mid-points of the transects were placed on jurisdictional wetland boundaries. Hydrology, soil properties, and plant species composition were measured within these transects. On average, transects included an elevation change of 0.6 m that corresponded …


Promoting Economic Literacy In Massachusetts And Beyond, Margaret Brooks Dec 2007

Promoting Economic Literacy In Massachusetts And Beyond, Margaret Brooks

Bridgewater Review

No abstract provided.


Egyptian Mau, Rachel Wiegmann Dec 2007

Egyptian Mau, Rachel Wiegmann

The Prairie Light Review

No abstract provided.


What I Found In Nature, Laura Yeakey Dec 2007

What I Found In Nature, Laura Yeakey

The Prairie Light Review

No abstract provided.


Will She Land?, Mardelle Fortier Dec 2007

Will She Land?, Mardelle Fortier

The Prairie Light Review

No abstract provided.


Tennis And Texas Hold 'Em, Patricia Gangas Dec 2007

Tennis And Texas Hold 'Em, Patricia Gangas

The Prairie Light Review

No abstract provided.


I Miss Mama, Carol Osburn Dec 2007

I Miss Mama, Carol Osburn

The Prairie Light Review

No abstract provided.


Untitled, Veronica Shukin Dec 2007

Untitled, Veronica Shukin

The Prairie Light Review

No abstract provided.


It Was Around Midnight, Joshua Cooper Dec 2007

It Was Around Midnight, Joshua Cooper

The Prairie Light Review

No abstract provided.


To Christopher Columbus - Your Fifth Voyage And Beyond, Wilda Morris Dec 2007

To Christopher Columbus - Your Fifth Voyage And Beyond, Wilda Morris

The Prairie Light Review

No abstract provided.


Feckless Replies, William Vollrath Dec 2007

Feckless Replies, William Vollrath

The Prairie Light Review

No abstract provided.


Torzolo The Street-Organ Monkey, Jim Hayden Dec 2007

Torzolo The Street-Organ Monkey, Jim Hayden

The Prairie Light Review

No abstract provided.


Untitled, Robyn Byrd Dec 2007

Untitled, Robyn Byrd

The Prairie Light Review

No abstract provided.


Cellar Door And Duct, Hinsdale, Il, Andrew Cornillie Dec 2007

Cellar Door And Duct, Hinsdale, Il, Andrew Cornillie

The Prairie Light Review

No abstract provided.


Coral Reef, J. Michael Carter Dec 2007

Coral Reef, J. Michael Carter

The Prairie Light Review

No abstract provided.


Those Eyes, Steve Van Dyke Dec 2007

Those Eyes, Steve Van Dyke

The Prairie Light Review

No abstract provided.


Back Alleyway, Hinsdale, Il, Andrew Cornillie Dec 2007

Back Alleyway, Hinsdale, Il, Andrew Cornillie

The Prairie Light Review

No abstract provided.


Spiritual Me, Jennifer Cooper Dec 2007

Spiritual Me, Jennifer Cooper

The Prairie Light Review

No abstract provided.


Eclipse, Daniel Valdez Dec 2007

Eclipse, Daniel Valdez

The Prairie Light Review

No abstract provided.


Fallen Petals, Wilda Morris Dec 2007

Fallen Petals, Wilda Morris

The Prairie Light Review

No abstract provided.


Experiment Copy, Jennifer Cooper Dec 2007

Experiment Copy, Jennifer Cooper

The Prairie Light Review

No abstract provided.


Pigeon, Amelia Kloskowski Dec 2007

Pigeon, Amelia Kloskowski

The Prairie Light Review

No abstract provided.


The Photo, Patrick Salem Dec 2007

The Photo, Patrick Salem

The Prairie Light Review

No abstract provided.


Moon Tide, Tricia Cimera Dec 2007

Moon Tide, Tricia Cimera

The Prairie Light Review

No abstract provided.


Green Farm Cupola, Larry Larson Dec 2007

Green Farm Cupola, Larry Larson

The Prairie Light Review

No abstract provided.


The Gag Reflex, Jason Snart Dec 2007

The Gag Reflex, Jason Snart

The Prairie Light Review

No abstract provided.