Results 71 to 80 of about 19,178,039 (347)

Strain rate sensitivity of sintered silver nanoparticles using rate-jump indentation

, 2018
Nanoindentation experiments were performed at room temperature on pressure-less sintered silver nanoparticles (AgNP) samples. Two representative die attach solder materials: sintered electrically conductive silver adhesive and conventional Sn-3.0Ag ...
冯义辉, Yao Y, Long X, Keer LM, Tang WB, Chang C, Yihui Feng, Yao Yao, Wenbin Tang, Leon M. Keer, Xu Long, Chao Chang   +11 more
core   +1 more source

Size effect of nickel-based single crystal superalloy revealed by nanoindentation with low strain rates

Journal of Materials Research and Technology
Size effect of the nickel-based single crystal superalloy DD6 is investigated in this study by performing nanoindentation experiments and finite element (FE) simulations by emphasizing the strain rate effect.
Xu Long, Ziyi Shen, Jiao Li, Ruipeng Dong, Ming Liu, Yutai Su, Chuantong Chen   +6 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Effect of Impact Load on Splice Length of Reinforcing Bars

International Journal of Concrete Structures and Materials, 2020
Impact loading damage of reinforced concrete (RC) members deteriorates bond strength of reinforcing bars. To understand the effect of strain rate on the bond strength of reinforcing bars in RC beams under impact load, drop hammer test was performed on ...
Hyeon-Jong Hwang, Fan Yang, Li Zang, Jang-Woon Baek, Gao Ma   +4 more
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Intermediate strain rate testing methodologies and full-field optical strain measurement techniques for composite materials characterisation

, 2014
Two optical full-field strain measurement techniques, Digital Image Correlation and the Grid Method, are applied to characterise the strain-rate dependent constitutive behaviour of composite materials.
Longana, M.L.
core   +1 more source

The impact of L12 dispersoids and strain rate on the Portevin-Le-Chatelier effect and mechanical properties of Al–Mg alloys

, 2021
The 5xxx-series Al–Mg alloys are susceptible to the Portevin Le Chatelier (PLC) effect which manifests itself as stress serrations and is visible as stretcher strain markings on the surface of deformed sheets during uniaxial testing.
F. Bakare, L. Schieren, B. Rouxel, Lu Jiang, T. Langan, A. Kupke, M. Weiss, T. Dorin   +7 more
semanticscholar   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

FEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas, Shahoon Khan, Abhishek Sharma, Byoungchun Lee, Savraj S. Grewal   +4 more
wiley   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Direct experimental evidence of time-temperature superposition at finite strain for an amorphous polymer network [PDF]

, 2015
The time-temperature superposition property of an amorphous polymer acrylate network is characterized at infinitesimal strain by standard dynamic mechanical analysis tests.
GILORMINI, Pierre, DIANI, Julie, ARRIETA, Juan Sebastian, Arrieta, J.S., Arrieta, Juan Sebastain   +4 more
core   +1 more source