Results 81 to 90 of about 7,660,346 (414)

Atomic-level passivation mechanism of ammonium salts enabling highly efficient perovskite solar cells

open access: yesNature Communications, 2019
The high conversion efficiency has made metal halide perovskite solar cells a real breakthrough in thin film photovoltaic technology in recent years. Here, we introduce a straightforward strategy to reduce the level of electronic defects present at the ...
Essa A. Alharbi   +15 more
semanticscholar   +1 more source

Guiding of Rydberg atoms in a high-gradient magnetic guide [PDF]

open access: yes, 2012
We study the guiding of $^{87}$Rb 59D$_{5/2}$ Rydberg atoms in a linear, high-gradient, two-wire magnetic guide. Time delayed microwave ionization and ion detection are used to probe the Rydberg atom motion. We observe guiding of Rydberg atoms over a period of 5 ms following excitation.
arxiv   +1 more source

Driving the atom by atomic fluorescence: analytic results for the power and noise spectra [PDF]

open access: yesR. Marani, M. Artoni, Phys. Rev. A, 61, (2000), 063812, 1999
We study how the spectral properties of resonance fluorescence propagate through a two-atom system. Within the weak-driving-field approximation we find that, as we go from one atom to the next, the power spectrum exhibits both sub-natural linewidth narrowing and large asymmetries while the spectrum of squeezing narrows but remains otherwise unchanged ...
arxiv   +1 more source

Addressing persistent challenges in digital image analysis of cancer tissue: resources developed from a hackathon

open access: yesMolecular Oncology, EarlyView.
Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran   +16 more
wiley   +1 more source

Phase Change Materials with Enhanced Thermal Conductivity and Heat Propagation in Them

open access: yesPhyschem, 2022
The review contains information o; n the properties of phase-change materials (PCM) and the possibilities of their use as the basis of thermal energy storage.
Alexander V. Eletskii
doaj   +1 more source

Ex Vacuo Atom Chip Bose-Einstein Condensate (BEC) [PDF]

open access: yes, 2016
Ex vacuo atom chips, used in conjunction with a custom thin walled vacuum chamber, have enabled the rapid replacement of atom chips for magnetically trapped cold atom experiments. Atoms were trapped in $>2$ kHz magnetic traps created using high power atom chips. The thin walled vacuum chamber allowed the atoms to be trapped $\lesssim1$ mm from the atom
arxiv   +1 more source

Etoposide‐induced cancer cell death: roles of mitochondrial VDAC1 and calpain, and resistance mechanisms

open access: yesMolecular Oncology, EarlyView.
The complex mode of action of the topoisomerase II inhibitor etoposide in triggering apoptosis involves several mechanisms: overexpression of the mitochondrial protein VDAC1, leading to its oligomerization and formation of a large channel that mediates the release of pro‐apoptotic protein; and overexpression of the apoptosis regulators p53, Bax, and ...
Aditya Karunanithi Nivedita   +1 more
wiley   +1 more source

Investigations on strength of piping for non-condensable gas combustion (Part 2: FEM analysis of steel pipes with a valve or an elbow subjected to hydrogen-oxygen detonation)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Carbon steel pipe specimens, which had been experimentally ruptured or deformed by hydrogen-oxygen detonation, were analysed by dynamic analysis using a finite element method (FEM).
Akira NEBU   +5 more
doaj   +1 more source

Evaluation of Passive Safety Injection System Performance Under Large Break LOCA for Qinshan PWR

open access: yesFrontiers in Energy Research, 2021
In this work, a brand new passive safety injection system has been designed for the ocean-based Qinshan Phase I nuclear power plant to update and replace the traditional active ones. The passive safety injection system is made up of high pressure, medium
Xuesong Wang   +3 more
doaj   +1 more source

Molecular and functional profiling unravels targetable vulnerabilities in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
We used whole exome and RNA‐sequencing to profile divergent genomic and transcriptomic landscapes of microsatellite stable (MSS) and microsatellite instable (MSI) colorectal cancer. Alterations were classified using a computational score for integrative cancer variant annotation and prioritization.
Efstathios‐Iason Vlachavas   +15 more
wiley   +1 more source

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