3,641 research outputs found
Sub-wavelength Coherent Imaging of a Pure-Phase Object with Thermal Light
We report, for the first time, the observation of sub-wavelength coherent
image of a pure phase object with thermal light,which represents an accurate
Fourier transform. We demonstrate that ghost-imaging scheme (GI) retrieves
amplitude transmittance knowledge of objects rather than the transmitted
intensities as the HBT-type imaging scheme does.Comment: 5 pages, 4 figures; Any comments pls. contact: [email protected]
(E)-2-(2-Chloro-3,3,3-trifluoroÂprop-1-enÂyl)-N-(2,4-dimethylÂphenÂyl)-3,3-dimethylÂcycloÂpropane-1-carboxamide
The title compound, C17H19ClF3NO, crystallizes with three molÂecules in the asymmetric unit. The aromatic ring makes dihedral angles of 38.69 (13), 46.68 (12) and 50.52 (11)° with the plane of the cycloÂpropane ring in the three molÂecules. The crystal packing is stabilized by interÂmolecular N—H⋯O hydrogen bonds
Effects of Wenxiao II Decoction on the expression of MCP-1 and VCAM-1 in atherosclerotic rabbits
AbstractObjectiveTo observe the effects of different doses of Wenxiao II Decoction on the expression of monocyte chemoattractant protein-1 (MCP-1) and vascular cell adhesion molecule-1 (VCAM-1) in an experimental model of atherosclerosis in rabbits and to explore the mechanism by which it alleviates atherosclerosis.MethodsSixty 3–4 month-old New Zealand rabbits of both sexes were randomly divided into six groups: simvastain; model; blank; and high-dose, mid-dose, and low-dose Wenxiao II Decoction groups. Except for those in the blank group, all rabbits were fed a high-cholesterol diet. Carotid atherosclerosis was established by balloon-induced injury to the endothelium of the carotid artery in conjunction with consumption of a high-cholesterol diet. After 8 weeks, all rabbits were killed to evaluate the expression of MCP-1 and VCAM-1 by immunohistochemical staining.ResultsExpressions of MCP-1 and VCAM-1 were significantly decreased in all groups except the blank group compared with the model group (P< 0.05). When compared with the simvastain group only variation of MCP-1 expression in low-dose group was not appreciable, and the differences were indistinct (P<0.05). When comparing among Wenxiao II Decoction groups, MCP-1 expression in the mid- and high-dose groups was significantly lower than that seen in the low-dose group (P< 0.01), but there were no differences among three dosage groups with respect to VCAM-1 expression (P>0.05).ConclusionThese data suggested that high, mid, and low doses of Wenxiao II Decoction can inhibit the expression of MCP-1 and VCAM-1, which may prevent the formation of or stabilize atherosclerotic plaques. There may be a direct relationship between the dosage of Wenxiao II Decoction and its therapeutic efficacy
Possible -wave superconductivity in LaNiO
Recently, the bulk nickelate LaNiO is reported to show signature
of high-temperature superconductivity under high pressure above GPa (H. Sun
{\it et al.}, arXiv:2305.09586). We analyze the pairing mechanism and pairing
symmetry in a bi-layer Hubbard model with two orbitals in the multiplet.
In the weak to moderate interaction regime, our functional renormalization
group calculations yield -wave Cooper pairing with dominant
-orbital content, triggered by spin fluctuations at wave vectors
near and , up to symmetry. The gap
function changes sign across the Fermi pockets. In the strong coupling limit,
we develop a low-energy effective theory in terms of atomic one- and
two-electron states in the multiplet. The effective theory predicts
naturally local pairing (with anti-phase between the two orbitals due to the
repulsive inter-orbital pair hopping) and strong singlet pairing on vertical
inter-layer bond, where the super-exchange between -orbital is
the strongest. The real-space structure is consistent with that from functional
renormalization group, suggesting the robustness of such a pairing function. We
also discuss a possible scenario for the weak insulating behavior under low
pressures in terms of the tendency toward the formation of charge order in the
strong coupling limit.Comment: 5 pages, 4 figure
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