Results 11 to 20 of about 4,198,362 (306)

Riboswitches: Structures and Mechanisms [PDF]

open access: yesCold Spring Harbor Perspectives in Biology, 2010
A critical feature of the hypothesized RNA world would have been the ability to control chemical processes in response to environmental cues. Riboswitches present themselves as viable candidates for a sophisticated mechanism of regulatory control in RNA-based life.
Andrew D, Garst   +2 more
openaire   +2 more sources

Structures and mechanisms of glycosyltransferases [PDF]

open access: yesGlycobiology, 2005
Glycosyltransferases (GTs) catalyze the transfer of a sugar moiety from an activated donor sugar onto saccharide and nonsaccharide acceptors. A sequence-based classification spreads GTs in many families thus reflecting the variety of molecules that can be used as acceptors.
Breton, C.   +4 more
openaire   +2 more sources

Ontic structural realism and the interpretation of quantum mechanics [PDF]

open access: yes, 2012
This paper argues that ontic structural realism (OSR) faces a dilemma: either it remains on the general level of realism with respect to the structure of a given theory, but then it is, like epistemic structural realism, only a partial realism; or it is ...
Esfeld, Michael
core   +1 more source

Nonlocal Operator Method for Solving Partial Differential Equations: State-of-the-Art Review and Future Perspectives

open access: yesJournal of Advanced Engineering and Computation, 2022
The nonlocal operator method (NOM) is based on nonlocal theory and employs nonlocal operators of integral form to replace the local partial differential operators.
Yongzheng Zhang   +2 more
doaj   +1 more source

Structured Mechanical Collage [PDF]

open access: yesIEEE Transactions on Visualization and Computer Graphics, 2014
We present a method to build 3D structured mechanical collages consisting of numerous elements from the database given artist-designed proxy models. The construction is guided by some graphic design principles, namely unity, variety and contrast. Our results are visually more pleasing than previous works as confirmed by a user study.
Zhe Huang 0004   +3 more
openaire   +4 more sources

DISTORSION IN STRUCTURAL MECHANICS [PDF]

open access: yesJOURNAL OF CIVIL ENGINEERING AND MANAGEMENT, 1995
The behaviour of elastic perfectly plastic structures under given loadings and distorsion is examined until plastic failure (analysis problem). “Distorsion” is here for the strain which does not satisfy the compatibility equations. A distorsion can be caused by prestressing, supports displacements or lack of precision during fabrication stage (the ...
openaire   +3 more sources

Structural Performance of RC Beams containing Tension-Only Nodes

open access: yesInternational Journal of Concrete Structures and Materials, 2018
Strut and Tie (S&T) models are used for the design of what are known as “discontinuity regions” in reinforced concrete (RC) structures. Building codes such as ACI-318 and Eurocode 2 do not give information on the nodes that only connect ties in S&T ...
Manuel Alejandro Fernández-Ruiz   +2 more
doaj   +1 more source

The Dynamic Properties of the Bridge Deck Model Reinforced With FRP Bars

open access: yesMATEC Web of Conferences, 2015
Significant application of composites can be observed in numerous fields over the last decades. Composite materials mainly used in the aeronautics industry are gaining more and more application in various areas such as the construction of bridges.
Markiewicz Barbara   +2 more
doaj   +1 more source

Application of Support Vector Machine Modeling for the Rapid Seismic Hazard Safety Evaluation of Existing Buildings

open access: yesEnergies, 2020
The economic losses from earthquakes tend to hit the national economy considerably; therefore, models that are capable of estimating the vulnerability and losses of future earthquakes are highly consequential for emergency planners with the purpose of ...
Ehsan Harirchian   +3 more
doaj   +1 more source

Structure and Mechanism of Acetolactate Decarboxylase [PDF]

open access: yesACS Chemical Biology, 2013
Acetolactate decarboxylase catalyzes the conversion of both enantiomers of acetolactate to the (R)-enantiomer of acetoin, via a mechanism that has been shown to involve a prior rearrangement of the non-natural (R)-enantiomer substrate to the natural (S)-enantiomer.
Marlow, Victoria A.   +4 more
openaire   +2 more sources

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