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Two unusual trinorsesquiterpenoids, urechitols A (1) and B (2), were isolated from the root extract of Pentalinon andrieuxii, a plant used commonly in Yucatecan traditional medicine to treat leishmaniasis. The structures of I and 2 were identified by interpretation of their spectroscopic data and chemical correlation reactions. The relative stereochemistry of I was confirmed through an X-ray cryst
Z-Ligustilide, a naturally occurring phthalide isolated from Ligusticum porteri, underwent Diels-Alder reactions with different dienophiles yielding novel tricyclic products with potentially interesting biological properties. Where selectivity was possible, the reactions performed showed regio- and stereoselectivity. The experimental results with ethyl acrylate were compared with the selectivity p
We discuss the concepts and methodology to implement an experiment probing directly Time Reversal (T ) non-invariance, without any experimental connection to CP violation, by the exchange of in and out states. The idea relies on the B 0 B ¯ ¯ ¯ ¯ B¯ 0 entanglement and decay time information available at B factories. The flavor or CP tag of the state of the still living neutral meson by the firs
Report detailing activities and experiences related to the 2018-2019 Urban Creativity research theme at the Pufendorf Institute for Advanced Studies.
Microdialysis enables the chemistry of the extracellular interstitial space to be monitored. Use of this technique in patients with acute brain injury has increased our understanding of the pathophysiology of several acute neurological disorders. In 2004, a consensus document on the clinical application of cerebral microdialysis was published. Since then, there have been significant advances in th
The electromagnetic polarizabilities of the nucleon are fundamental nucleon-structure observables that characterize its response to external electromagnetic fields. The neutron polarizabilities can be accessed from Compton-scattering data on light nuclear targets. Recent measurements of the differential cross section for Compton scattering on the deuteron below the pion-production threshold have d
The aim of the study was to investigate Swedish school nurses’ perceptions of schoolchildren’s health. The study is based on two national surveys in which school nurses responded to questions about schoolchildren’s health in 2015 (n = 181) and 2005 (n = 129). A statistical comparison showed that physical and mental health of schoolchildren in high-risk areas was perceived as worse than that of chi
An updated analysis regarding the expected nuclear PDF constraints from the future Large Hadron Electron Collider (LHeC) experiment is presented. The new study is based on a more flexible small-x parametrization which provides less biased uncertainty estimates in the region where there are currently no data constraints. The effect of the LHeC is quantified by directly including a sample of pseudod
This paper criticizes attempts to present narrow perspectives on innovation policy as reflecting the use of the concept innovation system. While it is correct that innovation policy, at least until recently, has given higher priority to economic growth than to global challenges such as climate change and income inequality this is in no way immanent in the innovation system concept. To illustrate,
The legendary cruise of H.M.S. Challenger (1872-1876) around the globe must always occupy an eminent place in the annals of oceanography, as being the first systematic attempt made on a global scale to explore the ocean. This expedition made fundamental discoveries in biology and geology which have not been surpassed by any later scientific cruise. Sediment with high content of metals (later calle
