Results 41 to 50 of about 203,990 (252)

FEniCS-Shells

open access: yes, 2018
FEniCS-Shells is an open-source library (LGPLv3) that provides a wide range of thin structural models (beams, plates and shells) solved using the finite element method and expressed in the Unified Form Language (UFL) of the FEniCS Project.FEniCS-Shells ...
Jack S. Hale (2928321)   +3 more
core   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Modern fracture mechanics for structural optimization with incomplete information [PDF]

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2008
Questions described in this paper are concerned with the shape optimization of brittle or quasi-brittle (axisymmetric) elastic shells. These questions take into consideration the possibilities of crack arising and damage accumulation in the process of
Banichuk N. V.   +2 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Geochemical properties of shells of Arctica islandica (Bivalvia) - implications for environmental and climatic change [PDF]

open access: yes, 2010
Trace elemental concentrations of bivalve shells content a wealthy of environmental and climatic information of the past, and therefore the studies of trace elemental distributions in bivalve shells gained increasing interest lately.
Zhang, Zengjie
core  

Prospecting the protein design landscape

open access: yesFEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona   +4 more
wiley   +1 more source

Free vibration analysis of plates and shells by using the Superposition Method [PDF]

open access: yes, 2010
This thesis is devoted to investigate the capability of the Superposition Method for obtaining the transient response of plates and the natural frequencies of thin doubly curved shallow shells.
Mochida, Yusuke
core  

Hybrid Sandwich Panels: A Review

open access: yesInternational Journal of Applied Mechanics and Engineering, 2020
A high specific stiffness, high specific strength, and tailoring the properties for specific application have attracted the attention of the researchers to work in the field of laminated composites and Sandwich structures.
S.H. Sandeep, C.V. Srinivasa
doaj   +1 more source

Curvature-driven instabilities in thin active shells

open access: yesRoyal Society Open Science, 2022
Spontaneous material shape changes, such as swelling, growth or thermal expansion, can be used to trigger dramatic elastic instabilities in thin shells.
Andrea Giudici, John S. Biggins
doaj   +1 more source

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