Notes

A new bacterial bioreporter to the detection of 1,Several,5-trinitro-1,3,5-triazinane (RDX).
The oscillatory growth of chemical gardens is studied experimentally in the budding regime using a co-flow of two reactant solutions within a microfluidic reactor. The confined environment of the reactor tames the erratic budding growth and the oscillations leave their imprint with the formation of orderly spaced membranes on the precipitate surface. The average wavelength of the spacing between membranes, the growth velocity of the chemical garden and the oscillations period are measured as a function of the velocity of each reactant. By means of materials characterization techniques, the micro-morphology and the chemical composition of the precipitate are explored. A mathematical model is developed to explain the periodic rupture of droplets delimitated by a shell of precipitate and growing when one reactant is injected into the other. The predictions of this model are in good agreement with the experimental data.A twin-axial pseudorotaxane is constructed using a phenylpyridine salt with diethanolamine (DA-PY) and cucurbit[8]uril (CB[8]), and it not only displays phosphorescence in aqueous solution but it can also be used for targeted cell-imaging.A fused tetracyclic BN-species 1 featuring nucleophilic nitrogen and electrophilic boron centers behaves as a reactive N/B frustrated Lewis pair (FLP) for small molecule activation. Specifically, the O-H and C[double bond, length as m-dash]O bonds have been cleaved by 1 with the formation of fused borinic acid 2, borenium species 3, anionic boranuidacarboxylic acid 4 and oxadiazaborolidinone 5, respectively. Quantum-mechanical calculations are conducted to comprehensively understand the activation processes of small molecules by 1.A visible light-induced decarboxylative Chichibabin pyridinium synthesis between α-amino acids and aldehydes was developed. When the in situ generated α-enamine acids were photoexcited, they were oxidized by aerobic oxygen to give radical cation species. After decarboxylation and further oxidation, the generated iminium undergoes Chichibabin cyclization to afford pyridiniums. This photochemical protocol enables the synthesis of various tetra-substituted pyridiniums and related natural products in one-step.This work discloses a Cu(ii)-Ni(ii) catalyzed tandem hydrocarboxylation of alkynes with polysilylformate formed from CO2 and polymethylhydrosiloxane that affords α,β-unsaturated carboxylic acids with up to 93% yield. Mechanistic studies indicate that polysilylformate functions as a source of CO and polysilanol. Besides, a catalytic amount of water is found to be critical to the reaction, which hydrolyzes polysilylformate to formic acid that induces the formation of Ni-H active species, thereby initiating the catalytic cycle.One new type of hybrid lead halide of [DTHPE]2Pb3Cl10 has been synthesized and characterized containing a one-dimensional (1D) wavelike [Pb3Cl10]4- chain based on a corner-shared [Pb3Cl11] cluster. Remarkably, this cluster-based 1D chain displays intrinsic broadband white light emission with a high quantum efficiency of 19.45% exceeding those of previously reported typical two-dimensional perovskites.The hydrogen evolution reaction is a huge challenge for CO2 electroreduction. https://www.selleckchem.com/products/kpt-8602.html Herein, an inside-mode indium oxide/carbon nanotube compound (MWCNTs@In2O3) is developed to maximize the catalytic effect and suppress hydrogen evolution, its HCOOH selectivity can reach up to 92.2% at -16.8 mA cm-2, which is more efficient than In2O3.This essay looks at the liminal genre of the critical pathography, a literary form that bridges the boundary between an academic analysis and an illness narrative. It argues that when this genre is compared to more traditional forms of analysis in the medical humanities and bioethics, the critical pathography treats its subject in a manner that is more akin to what Gabriel Marcel refers to as a mystery, something that can only be explored, than to a problem, a puzzle that can be solved.The essay explores how Simon Critchley's critique of philosophy and understanding of tragedy might affect bioethics and health-care practice. What I playfully call the Critchley Doctrine begins with a rejection of philosophy's aspiration to a non-contradictory life and its premise that humans act on rational deliberation. This rejection opens us to a recognition of the uncontainable that is expressed in tragedy, and that speaks to what is inexplicable about the suffering of illness. Critchley advocates an ethics of heteronomy or hetero-affectivity rather than autonomy, but his version is distinguished by its recognition of how crushing the demands of the other can be. Tragedy and humor offer what he calls aesthetic reparation. A tragic medicine balances grieving with humor and seeks above all honesty in communication."It was just a few small red dots," I would recount to innumerable sympathetic nurses. They-the dots, not nurses-clustered together on my son's smooth slim neck. I stroked them as I dressed him after the bath. My inner hypochondriac was oddly quiet. Larry, my son, was well, throwing himself through the world with speed, joy, and curiosity. The next day I took him casually to our general practitioner to get these curious freckles checked. Then everything started to tilt. How do I weave it all together? In a string of Facebook posts? In a small impersonal room opposite a stranger while I sip a glass of water? In a series of dark jokes with my husband in the kitchen late at night? In snatches of awkward conversation with friends? In dreams from which I wake gasping? By scouring the sentences of authors and archives? From the discoveries of Paul Ehrlich to the scattered words of Emily Dickinson to the constant mechanical chugging of the IV pump, this interdisciplinary essay delves into the medical and cultural history of blood and bone marrow to tell an acutely personal story.In this commentary, written in two bursts-the first completed in April 2020, and the second at the end of July-we explore how media metaphors of COVID-19 constitute the pandemic in Australia and New Zealand. We argue that the media's rhetorical strategies play an important role not only in describing the illness, but in influencing and shaping individual and collective responses to the pandemic, with significant consequences for mental health and well-being in the context of crisis. We align this commentary with the tenets of the sociology of diagnosis, which argue that even though there are material realities of disease, their social form and consequence cannot be separated from the tangible nature of illness and its management. We also lean on Derrida's approach to metaphor, which underlines how even observable viral entities such as COVID-19 are simultaneously material, abstract, and in flux. We describe the metaphors used by local media to describe the pandemic-including combat, bush fires, earthquakes, and other natural disasters-and we explore how and why these metaphors construct the pandemic locally and farther afield.
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