Results 81 to 90 of about 2,592 (294)

Characterization of Crazing Properties of Polycarbonate

, 2000
The purpose of this study was to characterize the craze growth behavior of polycarbonate (PC) as a function of stress level, model the residual mechanical properties of PC at various craze levels and strain rates, and determine if the total surface area ...
Clay, Stephen Brett
core  

Generation of Anisotropic Conductivity in Polymer Films Using Localized Microvoids Formed by Solvent Crazing as Nanoreactors

, 2016
Generation of Anisotropic Conductivity in Polymer Films Using Localized Microvoids Formed by Solvent Crazing as ...
Oliver Weichold (2246182), Pooja Goel (2360743), Martin Möller (1377198)   +2 more
core   +1 more source

Modeling of the competition between shear yielding and crazing in glassy polymers [PDF]

, 2000
Fracture in amorphous glassy polymers involves two mechanisms of localized deformations: shear yielding and crazing. We here investigate the competition between these two mechanisms and its consequence on the material’s fracture toughness. The mechanical
Estevez, R.,, Estevez, R., Tijssens, M.G.A., van der Giessen, E., van der Giessen, E.; id_orcid, E. Van der Giessen, Tijssens, M.G.A.,, M.G.A. Tijssens, Giessen, E. van der,, R. Estevez   +9 more
core   +2 more sources

Beyond forests: Harnessing conservation gardening for open biomes in Brazil

PLANTS, PEOPLE, PLANET, EarlyView.
Urban gardening offers an innovative conservation strategy by integrating native ornamental species into urban landscapes. We evaluated the ornamental potential of the Brazilian flora by comparing the representation of species from forests versus open biomes (focusing on campo rupestre grasslands) and introduced and validated the Index of Ornamental ...
Flávia Santos Faria, Luciane Vilela Resende, Fernando A. O. Silveira   +2 more
wiley   +1 more source

Mortality in an invasive ant does not scale linearly with fipronil exposure

Pest Management Science, EarlyView.
Increasing fipronil concentration did not linearly increase yellow crazy ant mortality when introduced via horizontal transfer; high doses may limit food sharing. Queen mortality was low, and surviving workers were averse to feeding. Abstract Background Controlling eusocial invasive and other pestiferous insects is difficult.
Peter Yeeles, Angela Strain, Lori Lach
wiley   +1 more source

ENVIRONMENTAL CRAZING OF POLYMETHYLMETHACRYLATE AND POLYCARBONATE.

, 1980
Of particular interest to the manufacturer and consumer alike, is the resistance of these polymers to mechanical degradation under stress in certain unfavorable environments, such as organic solvents.
Di Benedetto A T, Iannone M, Bellusci P, Nicolais L   +3 more
core  

Comparative Study on Fatigue Life and Fracture Characteristics of ABS and DLP 3D Printing Resin Using Ultrasonic Fatigue Testing [PDF]

한국정밀공학회지
This study investigated the ultrasonic fatigue behavior of ABS and of a high-strength photopolymer resin (Rigid Black) fabricated by digital light processing (DLP) additive manufacturing. The dynamic elastic modulus of both materials was measured so that
Geum-jeong Park, Moon Gu Lee, Yongho Jeon   +2 more
doaj   +1 more source

A Hero's Journey to Systemic Change: Developing Expertise in Agricultural Development

Sustainable Development, EarlyView.
ABSTRACT Experts in rural development and agrarian change wield considerable influence over programme design and delivery, directing resources and shaping trajectories towards the Sustainable Development Goals (SDGs). Yet the pathways through which such expertise develops remain under‐examined. This study examines the journey to expertise among experts
Kirt Hainzer, Caitlin Finlayson, Nicholas Harrigan, Andrew McGregor, Katharine McKinnon, Van Touch, Ariane Utomo, Brian R. Cook   +7 more
wiley   +1 more source

Moral Economies of Debt Forgiveness and Enforcement in Postcrisis Iceland

Economic Anthropology, EarlyView.
ABSTRACT Who deserves financial relief in times of crisis, and on what grounds? The 2008 collapse of Iceland's banking system prompted state intervention to mitigate household indebtedness, including forbearance, pension withdrawals, repayment adjustments, and debt reductions.
Timothy Heffernan
wiley   +1 more source

Evaluation of different sterilization and disinfection methods on commercially made preformed crowns

Journal of Indian Society of Pedodontics and Preventive Dentistry, 2008
The aim of this study was to evaluate the changes caused by different sterilization or disinfection methods on the vestibular surface of four commercially made preformed crowns using stereomicroscopy and scanning electron microscopy (SEM).
Yilmaz Y, Guler C
doaj