Mass spectrometry data are often corrupted by noise. It is very difficult to simultaneously detect low-abundance peaks and reduce false-positive peak detection caused by noise. In this paper, we propose to improve peak detection using an additional constraint: the consistent appearance of similar true peaks across multiple spectra. We observe that false -positive peaks in general do not repeat ...

A 59-year-old male patient presented with a pulsating mass at the left sternal edge weeks after a CABG procedure. CTshowed a false aneurysm of the LIMA (Fig. 1), confirmed by angiography (Fig. 2a). The leakage was treated using a 16-by-3.5-mm Jostent leading to complete lesion thrombosis (Fig. 2b). Fig. 1. Contrast enhanced CT shows a 6 cm diameter left internal mammary artery false aneurysm. F...

Context. Solar Orbiter, the new-generation mission dedicated to solar and heliospheric exploration, was successfully launched on February 10, 2020, 04:03 UTC from Cape Canaveral. During its first perihelion passage in June two successive interplanetary coronal mass ejections (ICMEs), propagating along current sheet (HCS), impacted spacecraft.

To determine the number of false-negative results produced by inefficient extraction of drugs from meconium, three published procedures were compared by using previously confirmed positive and negative meconium specimens. The methods were not equivalent in their ability to extract drugs from the matrix. To determine the number of false positives reported by the use of screen-only (unconfirmed) ...

Abstract We identify a ?600 pc wide region of active star formation located within tidal streamer M82 via H ? emission ( F ? 6.5 × 10 ?14 erg s ?1 cm ?2 ), using pathfinder instrument based on the Dragonfly Telephoto Array. The object is kinematically decoupled from disk as confirmed Keck/LRIS spectroscopy and spatially coincident with an overdensity i molecular hydrogen “northern streamer” ind...

Abstract In this paper we extend the encounter-based model of diffusion-mediated surface absorption to case an unbiased run-and-tumble particle (RTP) confined a finite interval [0, L ] and switching between two constant velocity states ± v at rate α . The formalism is motivated by observation that various surface-based reactions are better modeled in terms reactivity function amount time spends...

In Laboratory Astrophysics at Leiden University a laboratory analog for following the chemical evolution of interstellar dust in space shows that the dust contains the bulk of organic material in the universe. We follow the photoprocessing of low temperature (10 K) mixtures of ices subjected to vacuum ultraviolet radiation in simulation of interstellar conditions. The most important, but necess...

Pulmonary artery (PA) rupture caused by a PA Swan-Ganz catheter is a rare complication but remains fatal in almost 50% of cases. False aneurysm of the PA is a rare presentation of PA rupture and should be considered as a possible diagnosis in a patient with a new lung mass after PA catheterization. We present a case of sudden-onset pulmonary alveolar hemorrhage during cardiovascular surgery due...