Results 11 to 20 of about 260,163 (214)
Structural barriers to scientific progress [PDF]
Acta Crystallographica Section D Structural Biology, 2020 Structural biases, which are intrinsic in the social structures in which we function, play a key role in maintaining boundaries between traditionally privileged and underprivileged groups; however, they are particularly difficult to identify from within those societies.
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Effects of barrier phonons on the tunneling current in a double-barrier structure [PDF]
Physical Review B, 1989 The effects of AlAs acoustical and optical phonons on the tunneling current in an ideal GaAs-AlAs-GaAs-AlAs-GaAs structure are discussed. The transfer Hamiltonian method was extended to inelastic tunneling current in a double-barrier structure. It is found that the current off resonance in the Tsu-Esaki model could be enhanced by orders of magnitude by
Wu, G. Y., McGill, T. C.
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Spanoids---An Abstraction of Spanning Structures, and a Barrier for LCCs [PDF]
SIAM Journal on Computing, 2020 Conference version to appear in ITCS 2019.
Dvir, Zeev +3 more
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Structural analysis of nucleosomal barrier to transcription [PDF]
Proceedings of the National Academy of Sciences, 2015 Significance On the majority of eukaryotic genes RNA polymerase II meets nucleosomes during transcription of every ∼200 bp of DNA. The key features of Pol II–nucleosome encounter are conserved from yeast to human, but the molecular mechanism of this process remains unknown.
Daria A, Gaykalova +7 more
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Barriers for Virtual Assessment of Structural Robustness [PDF]
Volume 2B: Advanced Manufacturing, 2019 Abstract Simulation techniques such as Finite Element Analysis (FEA) have substantially contributed to reducing the time and cost of developing new mechanical products over the last decades. However, FEA is primarily carried out on the nominal geometry, i.e.
Nerenst, Tim Brix +4 more
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DIGITAL DOUBLE BARRIER OPTIONS: SEVERAL BARRIER PERIODS AND STRUCTURE FLOORS [PDF]
International Journal of Theoretical and Applied Finance, 2013 We determine the price of digital double barrier options with an arbitrary number of barrier periods in the Black–Scholes model. This means that the barriers are active during some time intervals, but are switched off in between. As an application, we calculate the value of a structure floor for structured notes whose individual coupons are digital ...
SÜHAN ALTAY +3 more
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Structure and function of the blood–brain barrier
Neurobiology of Disease, 2010 Neural signalling within the central nervous system (CNS) requires a highly controlled microenvironment. Cells at three key interfaces form barriers between the blood and the CNS: the blood-brain barrier (BBB), blood-CSF barrier and the arachnoid barrier. The BBB at the level of brain microvessel endothelium is the major site of blood-CNS exchange. The
Abbott, N. Joan +4 more
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Organoids in pediatric cancer research
FEBS Letters, EarlyView.Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
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Barrier breakdown in multiple quantum well structure [PDF]
Applied Physics Letters, 2008 We explore a regime of unipolar electronic transport in a multiple quantum well structure with very large current discontinuities—up to five orders of magnitude. Magnetotransport experiments reveal different transport regimes. Quantum well impact ionization shifts the structure from a resistive “down” state, where the current flows through interwell ...
Gomez, Aurore +3 more
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Reciprocal control of viral infection and phosphoinositide dynamics
FEBS Letters, EarlyView.Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
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