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Self‐assembly of heterochiral, aliphatic dipeptides with Leu

This work describes the self-assembly behavior of heterochiral, aliphatic dipeptides, l-Leu-d-Xaa (Xaa = Ala, Val, Ile, Leu), in green solvents such as acetonitrile (MeCN) and buffered water at neutral pH. Interestingly, water plays a structuring role because at 1% v/v, it enables dipeptide self-assembly in MeCN to yield organogels, which then undergo transition towards crystals. Other organic solvents and oils were tested for gelation, and metastable gels were formed in tetrahydrofuran, alth...

Applicability of a Chemiluminescence Immunoassay to Screen Postmortem Bile Specimens and Its Agreement with Confirmation Analysis

Bile has emerged as an alternative matrix for toxicological investigation of drugs in suspected forensic cases of overdose in adults and intoxications in children. Toxicological investigation consists in screening and, subsequently, confirming the result with specific techniques, such as liquid chromatography with tandem mass spectrometry (LC-MS/MS). As there is no screening test on the market to test postmortem bile specimens, the novelty of this study was in investigating the applicability ...

The importance of social context in explaining the relationship between later-life work transitions and mental well-being

Myocardial oxygen supply and demand imbalance predicts mortality in older nursing home residents: The PARTAGE study

Background: A mismatch between myocardial oxygen supply and demand is the most common cause of ischemic myocardial injury in older persons. The subendocardial viability ratio (SEVR) can usefully estimate the degree of myocardial perfusion relative to left-ventricular workload. The aim of the present study was to evaluate the ability of SEVR to predict long-term mortality in the older population. Additionally, we aimed to identify the SEVR cutoff value best predicting total mortality. Methods:...

Female managers and firm performance: Evidence from the non-agricultural sectors in caribbean countries

This paper investigates whether female-led firms in the Caribbean region are less productive than their male-led counterparts. Whereas previous literature focused on female ownership as a measure of female entrepreneurship overlooking the limited involvement of female owners in the decision-making process, we focus on the gender of the top manager to re-examine the existence of a productivity gap in developing countries, for which evidence is still scarce. Using survey data with gender-relate...

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