Results 101 to 110 of about 832,826 (306)

Greedy power allocation for multicarrier systems with reduced complexity

open access: yes, 2010
In this paper we consider a reduced complexity discrete bit loading for Multicarrier systems based on the greedy power allocation (GPA) under the constraints of transmit power budget, target BER, and maximum permissible QAM modulation order.
Al-Hanafy, Waleed, Weiss, S.
core  

Response of tall buildings with symmetric setbacks under blast loading

open access: yes, 2010
This study explores three-dimensional nonlinear dynamic responses of typical tall buildings with and without setbacks under blast loading. These 20 storey reinforced concrete buildings have been designed for normal (dead, live and wind) loads.
Dias, W. P. S.   +7 more
core   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS 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   +2 more
wiley   +1 more source

Effects of loading and unloading on mRNA levels of Col I, Col II, and NGFß.

open access: yes, 2014
(A) Knee loading-induced increases in Col I and unloading-induced decreases in Col I in the femur and tibia. (B) Knee loading-induced increases in Col II and unloading-induced decreases in Col II in cartilage.
Joseph M. Wallace (507061)   +5 more
core   +1 more source

Comparative Analysis of Crestal Bone Levels of Basal Implants and Conventional Implants: A Clinico Radiological Study

open access: yesJournal of Pharmacy and Bioallied Sciences
Introduction: This study presents a comparative analysis of crestal bone levels, keratinized gingiva width (KGW), and gingival thickness (BGT) between basal and conventional dental implants over a 6-month period in the mandibular posterior region ...
Kshitibhushan Singh Pandaw   +5 more
doaj   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

open access: yesFEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi   +6 more
wiley   +1 more source

Microcracks Propagation in One Al/SiCp under Impact Loading

open access: yes, 2006
Numerous microcracks propagation in one metal matrix composite, Al/SiCp under impact loading was investigated. The test data was got with a specially designed impact experimental approach.
Ling Z(凌中)   +2 more
core   +2 more sources

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

Damage and strain rate optical characterisation of standard and tufted non crimp fabric carbon composites for Meso-scale impact models [PDF]

open access: yes, 2009
As global warming is a prime concern to the wellbeing of the planet, lighter planes are a requirement to reduce CO2 emissions. Light structures made of carbon epoxy composite materials are of particular interest but are sensitive to impacts such as
Colin de Verdiere, Mathieu
core  

Effects of Asymmetric Dynamic Loading on Intervertebral Disc – towards a Scoliosis Mimicking Organ Culture Model

open access: yesGlobal Spine Journal, 2016
Introduction The etiology of spinal deformity in idiopathic scoliosis is unclear to date. One of the suspected influences is the asymmetric loading condition involved in the disorder.
Zhen Li   +6 more
doaj   +1 more source

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