For plurisubharmonic solutions of the complex homogeneous Monge–Ampère equation whose level sets are hypersurfaces of finite type, in dimension 2, it is shown that the Monge–Ampère foliation is defined even at points of higher degeneracy. The result is applied to provide a positive answer to a question of Burns on homogeneous polynomials whose logarithms satisfy the complex Monge–Ampère equation and to generalize the work of P. M. Wong on the classification of complete weighted circular domains.
It is shown that codimension one parabolic foliations of complex manifolds are holomorphic. This is proved using the facts that codimension one foliations of complex manifolds are necessarily locally Monge- Ampère foliations and that parabolic leaves cannot have hyperbolic behavior. The result holds true also for locally Monge-Ampère foliations with parabolic leaves of arbitrary codimension.
We describe the design, synthesis and characterization of
five high Stokes shift quadrupolar heteroaryl compounds suitable
as fluorescent probes in bio-imaging. In particular, we
characterize the photophysical properties and the intracellular
localization in Human Umbilical Vein Endothelial Cells
(HUVEC) and Human Mesenchymal Stem Cells (HMSCs) for
each dye. We show that, amongst all of the investigated
derivatives, the 2,5-bis[1-(4-N-methylpyridinium)ethen-2-yl)]-
N-methylpyrrole salt is the best candidates as selective mitochondrial
tracker. Finally, we recorded the full emission spectrum
of the most performing - exclusively mitochondrial selective
- fluorescent probe directly from HUVEC stained cells.
The emission spectrum collected from the stained mitochondria
shows a remarkably more pronounced vibronic structure
with respect to the emission of the free fluorophore in solution.
Background: The adoption of Quality Indicators (QIs) has prompted the development of tools to measure and evaluate the quality and effectiveness of laboratory testing, first in the hospital setting and subsequently in ambulatory and other care settings. While Laboratory Medicine has an important role in the delivery of high-quality care, no consensus exists as yet on the use of QIs focussing on all steps of the laboratory total testing process (TTP), and further research in this area is required.
Methods: In order to reduce errors in laboratory testing, the IFCC Working Group on “Laboratory Errors and Patient Safety” (WG-LEPS) developed a series of Quality Indicators, specifically designed for clinical laboratories. In the first phase of the project, specific QIs for key processes of the TTP were identified, including all the pre-, intra- and post-analytic steps. The overall aim of the project is to create a common reporting system for clinical laboratories based on standardized data collection, and to define state-of-the-art and Quality Specifications (QSs) for each QI independent of: a) the size of organization and type of activities; b) the complexity of processes undertaken; and c) different degree of knowledge and ability of the staff. The aim of the present paper is to report the results collected from participating laboratories from February 2008 to December 2009 and to identify preliminary QSs.
Results and conclusions: The results demonstrate that a Model of Quality Indicators managed as an External Quality Assurance Program can serve as a tool to monitor and control the pre-, intra- and post-analytical activities. It might also allow clinical laboratories to identify risks that lead to errors resulting in patient harm: identification and design of practices that eliminate medical errors; the sharing of information and education of clinical and laboratory teams on practices that reduce or prevent errors; the monitoring and evaluation of improvement activities.