Results 41 to 50 of about 1,514,488 (302)

Scattering by one-dimensional rough surfaces [PDF]

, 1994
We consider the two-dimensional Dirichlet boundary value problem for the Helmholtz equation in a non-locally perturbed half-plane. We look for a solution in the form of a double-layer potential using, as fundamental solution, the Green's function for the
Chandler-Wilde, SN, Ross, CR
core  

Criticality in coupled quantum spin-chains with competing ladder-like and two-dimensional couplings

, 2003
Motivated by the geometry of spins in the material CaCu$_2$O$_3$, we study a two-layer, spin-half Heisenberg model, with nearest-neighbor exchange couplings J and \alpha*J along the two axes in the plane and a coupling J_\perp perpendicular to the planes.
A.V. Chubukov, A.W. Sandvik, A.W. Sandvik, A.W. Sandvik, A.W. Sandvik, A.W. Sandvik, A.W. Sandvik, D.C. Johnston, E. Dagotto, E.L. Pollock, H. Kageyama, I. Affleck, I. Affleck, J. Oitmaa, J.H. Schön, K. Harada, K. Hida, M. Azuma, M. Greven, M. Troyer, M. Wallin, M.P. Gelfand, M.P. Gelfand, N. Motoyama, O.A. Starykh, O.F. Syljuåsen, P. Kopietz, P.V. Shevchenko, Pinaki Sengupta, R. Coldea, R.R.P. Singh, Rajiv R. P. Singh, S. Chakravarty, S.R. White, V. Kiryukhin, W. Kohn, W. Zheng, Weihong Zheng, Y.J. Kim   +38 more
core   +1 more source

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

FEBS 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, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

The key role of smooth impurity potential in formation of hole spectrum for p-Ge/Ge_{1-x}Si_x heterostructures in the quantum Hall regime [PDF]

, 2001
We have measured the temperature (0.1
Arapov Yu G, Arapov Yu G, Coleridge P T, Coleridge P T, D'Iorio M, Das Sarma S, G A Alshanskii, G I Harus, Gavrilov M G, Greenwood D A, Kukushkin I V, Luryi S, M V Yakunin, N G Shelushinina, O A Kuznetsov, Pruisken A M M, Pruisken A M M, Shahar D, Shahar D, Shklovskii B I, Svoboda P, V N Neverov, van Schaijk R T F, Wei H P, Yu G Arapov   +24 more
core   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Understanding radiation shielding performance through a comparative study of half value layer in novel and preexisting silicate glasses

Nuclear Engineering and Technology
This study focuses on evaluating the PbO-SiO2-B2O3-Na2O glasses' radiation shielding ability against various previously tested materials to gain an in-depth understanding of the glass system's attenuation capabilities.
Albandari.W. Alrowaily, Aljawhara H. Almuqrin, M.I. Sayyed, B. Albarzan   +3 more
doaj   +1 more source

The effect of replacing sand by iron slag on physical, mechanical and radiological properties of cement mortar

HBRC Journal, 2017
In the present study, the effects of replacing sand by high percentages of basic-oxygen furnace slag on the compressive strength, bulk density and gamma ray radiation shielding properties of mortar have been investigated.
Ahmed S. Ouda, Hamdy A. Abdel-Gawwad
doaj   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Development of high-performance heavy density concrete using different aggregates for gamma-ray shielding

HBRC Journal, 2015
The performance requirements of the concrete of containment structures are mainly radiological protection, structural integrity, durability, etc. For this purpose, high-performance heavy density concrete can be used. After extensive trials and errors, 15
Ahmed S. Ouda
doaj   +1 more source

Measurement and Research of Intrinsic Filtering of X-Ray Optical Machine

Journal of Isotopes, 2021
The thickness of the inherent filter layer is one of the important performance parameters of the X-ray reference radiation device, and it needs to be quantitatively measured. This research is based on the new version of ISO 4037-1 standard specification,
HANG Zhongbin;LIU Chuanfeng;LIU Yuntao;WEI Kexin;SONG Mingzhe;WANG Hongyu
doaj   +1 more source