Results 51 to 60 of about 3,016,933 (291)

Shape Optimisation of Assembled Plate Structures with the Boundary Element Method

open access: yesAerospace, 2022
A novel methodology is presented for performing sensitivity analyses of assembled plate structures using the Boundary Element Method (BEM). The main novelty of this work is that the exact implicit derivatives of the BEM formulations for assembled plate ...
Llewellyn Morse   +3 more
doaj   +1 more source

Ritchey-Chretien Telescope [PDF]

open access: yes, 1973
A Ritchey-Chretien telescope is described which was designed to respond to images located off the optical axis by using two transparent flat plates positioned in the ray path of the image.
Amon, M., Rosin, S.
core   +1 more source

The StarScan plate measuring machine: overview and calibrations

open access: yes, 2008
The StarScan machine at the U.S. Naval Observatory (USNO) completed measuring photographic astrograph plates to allow determination of proper motions for the USNO CCD Astrograph Catalog (UCAC) program.
de Vegt C.   +9 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

A Layer-Wise Coupled Thermo-Elastic Shell Model for Three-Dimensional Stress Analysis of Functionally Graded Material Structures

open access: yesTechnologies, 2023
In this work, a coupled 3D thermo-elastic shell model is presented. The primary variables are the scalar sovra-temperature and the displacement vector.
Salvatore Brischetto   +2 more
doaj   +1 more source

Influence of quantized massive matter fields on the Casimir effect

open access: yes, 2015
Charged massive matter fields of spin 0 and 1/2 are quantized in the presence of an external uniform magnetic field in a spatial region bounded by two parallel plates.
Sitenko, Yu. A.
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Computing second-order scattering of obtuse dihedral for any incident angle

open access: yesThe Journal of Engineering, 2019
In this study, the second-order scattering area and field of obtuse dihedral is derived in detail. The obtuse angle, interior angle of dihedral, breaks the symmetry of the two plates in some extent, thus making the illumination case of double bounce more
Haibo Song, Gongjian Wen
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Placas de refratários aluminosos do sistema de válvula gaveta de panelas de aciaria: análise post mortem da degradação química

open access: yesCerâmica
Resumo Em uma aciaria, os recipientes que comportam o aço líquido, tais como o forno e a panela de aciaria, são revestidos com materiais refratários especiais para alta temperatura e elevada resistência ao desgaste.
B. B. de Sousa, S. R. Bragança
doaj   +1 more source

Home - About - Disclaimer - Privacy