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Conductance values measured for multi-nanoparticle nano-scale devices (2 and 3 nanocrystals between the electrodes) are consistent with a multi-step coherent tunneling in the off-resonance regime between adjacent PBAs, a simple model gives a strong coupling (around 0.1-0.25 eV) between the adjacent PBA nanocrystals, mediated by electrostatic interactions.There is a renewed interest in the derivation of statistical mechanics from the dynamics of closed quantum systems. A central part of this program is to understand how closed quantum systems, i.e., in the absence of a thermal bath, initialized far-from-equilibrium can share a dynamics that is typical to the relaxation towards thermal equilibrium. Equilibration dynamics has been traditionally studied with a focus on the so-called quenches of large-scale many-body systems. We consider here the equilibration of a two-dimensional molecular model system describing the double proton transfer reaction in porphine. Using numerical simulations, we show that equilibration indeed takes place very rapidly (∼200 fs) for initial states induced by pump-dump laser pulse control with energies well above the synchronous barrier. The resulting equilibration state is characterized by a strong delocalization of the probability density of the protons that can be explained, mechanistically, as the result of (i) an initial state consisting of a large superposition of vibrational states, and (ii) the presence of a very effective dephasing mechanism.Traditional cancer diagnosis strategies are not considered by most people until the last resort, which delays many cancer treatments leading to advanced stages. Tumor marker sensors show great potential for detecting cancer because of its cost-effective and harmless checking procedures. Normally, one tumor marker is detected each time by using one type of sensor, but the accuracy to declare cancer is not always satisfied. Metal nanoclusters are ultra-small nanomaterials with low toxicity, distinct optical properties, catalytic activities, and cost-effective performance. Some metal nanoclusters have been designed to detect more than one tumor marker in a single step. The consideration of combined parameters using such facile sensing strategies has the potential to simplify the test procedure, and increase the diagnostic accuracy of early cancer. this website Therefore, various sensing strategies for the multiplex detection of tumor markers using metal nanoclusters are summarized.Metal-catalyzed reductive amination of formyl-containing linkers with N,N-dialkylformamide solvents is concomitant with the solvothermal coordination assembly, leading to novel MOFs functionalized with tertiary aliphatic amino groups. This illustrates a novel one-pot strategy to functionalize MOFs through in situ organic transformation. The UiO-66 MOFs partially functionalized with the amino groups are highly active heterogeneous catalysts for Knoevenagel condensation.Step and redox efficiencies are a rising priority in synthetic method development, in order to make synthetic processes more sustainable and more affordable. Herein, a step and redox efficient nitroarene to indole synthesis is developed, in sharp contrast to the rich literature on the construction of indoles. Elemental zinc was found to be the best terminal reductant."Inside the word emerging is emerge, from an emergency new things come forth. The old certainties are crumbling first, but danger and possibility are sisters."COVID-19 pneumonia produces a heterogeneous array of clinical, biochemical, and radiological findings. Over the last few months of global hurry to optimize a testing strategy, it has been suggested that bedside point-of-care lung ultrasound may have a diagnostic role. We present 3 patients with RT-PCR nasopharyngeal swab-confirmed COVID-19 pneumonia, who had an admission plain chest film reported to be normal by a consultant radiologist, but with significant sonographic abnormalities on bedside ultrasound performed within 24 hours of the chest radiograph. Lung ultrasound may better correlate with the oxygen requirement and overall condition of the patient than chest radiographs - a pertinent consideration given the imminent advance of the pandemic into resource-poor zones where timely access to roentgenological imaging may be sparse.de Winter syndrome, or anterior ST segment elevation myocardial infarction (STEMI), constitutes 2% of acute myocardial infarctions. In contrast to classic ST segment elevation as seen with STEMI, it involves ST depression with precordial derivations and sharp waves. de Winter syndrome indicates critical narrowing of the left ascending coronary artery (LAD). Recognizing this presentation is important in terms of both mortality and morbidity. this website We present the case of a 71-year old patient presenting at the Emergency Department with chest pain, who had findings of de Winter syndrome on their ECG. Coronary angiography confirmed occlusions in the LAD and circumflex (CX) coronary arteries.A case report on a 36-year-old male patient presenting to the emergency department (ED) with chest tightness, nasal sounding voice and subcutaneous emphysema 72 hours after the nasal insufflation of approximately 0.5g of cocaine. A plain radiograph of the chest demonstrated an extensive pneumomediastinum with subcutaneous emphysema extending into his neck. A computerised tomography (CT) scan confirmed the above findings, along with a pneumorrhachis of the thoracic spine. He was admitted locally for further investigation and observation. Cocaine is the second most used illicit drug in the UK. The associated complications of cocaine can vary from acute coronary syndrome to acute psychosis. Pulmonological trauma secondary to cocaine misuse is commonly associated with inhalation of cocaine; we present this rare case of subcutaneous emphysema, pneumomediastinum and pneumorrhachis secondary to nasal insufflation. It is believed that deep nasal insufflation of cocaine is followed by forceful Valsalva manoeuvre, which allows for the rapid absorption of the drug and increases the euphoric effect. This forceful inhalation can lead to barotrauma and leakage of air into the posterior mediastinum.