Publications by authors named "M A Sergeev"

Observation of the decay.

Eur Phys J C Part Fields

October 2024

Using proton-proton collision data corresponding to an integrated luminosity of collected by the CMS experiment at , the decay is observed for the first time, with a statistical significance exceeding 5 standard deviations. The relative branching fraction, with respect to the decay, is measured to be , where the first uncertainty is statistical, the second is systematic, and the third is related to the uncertainties in and .

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Article Synopsis
  • A new method was created to easily convert spiro[indoline-3,2'-quinoxaline]-2,3'-diones into quinolino[3,4-]quinoxalin-6-ones, using isatines, malononitrile, and 1,2-phenylenediamines under mild conditions.
  • This method is efficient and yields high amounts of the desired compounds, making it useful for creating a diverse range of quinolino[3,4-]quinoxalin-6-ones that could be tested in medicinal chemistry.
  • The researchers also used extensive DFT calculations to study the reaction mechanism in detail.
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New data on distribution, ecology and biology of the rare extant species of the almost completely ancient family Prophalangopsidae (Orthoptera) are given. This montane species prefers humid areas with relatively low summer temperatures. Habits, mating behaviour and life history of are extremely similar to those of the North American representatives of the genus .

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Laser conversion of metal-organic frameworks (MOFs) has recently emerged as a fast and low-energy consumptive approach to create scalable MOF derivatives for catalysis, energy, and optics. However, due to the virtually unlimited MOF structures and tunable laser parameters, the results of their interaction are unpredictable and poorly controlled. Here, we experimentally base a general approach to create nano- to centimeter-scale MOF derivatives with the desired nonlinear optical and catalytic properties.

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Cellular adaptation to low oxygen tension triggers primitive pathways that ensure proper cell function. Conditions of hypoxia and low glucose are characteristic of injured tissues and hence successive waves of inflammatory cells must be suited to function under low oxygen tension and metabolic stress. While Hypoxia-Inducible Factor (HIF)-1α has been shown to be essential for the inflammatory response of myeloid cells by regulating the metabolic switch to glycolysis, less is known about how HIF1α is triggered in inflammation.

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