The combustion behavior of epoxy‐based multifunctional electrolytes

Multifunctional or structural electrolytes are characterized by ionic conductivity high enough to be used in the electrochemical devices and mechanical performance suitable for the structural applications. Preliminary insights are provided into the combustion behavior of structural bi‐continuous electrolytes based on bisphenol A diglycidyl ether (DGEBA), synthesized using the techniques of reaction induced phase separation and emulsion templating. The effect of the composition of the structural electrolytes and external heat flux on the behavior of the formulations were studied using a cone calorimeter with gases formed during testing analyzed using FTIR. The composition of the formulations investigated was changed by varying the type and amount of the ion conductive part of the bi‐continuous electrolyte. Two ionic liquids, 1‐ethyl‐3‐methylimidazolium bis(fluorosulfonyl)imide (EMIM‐TFSI) and 1‐butyl‐3‐methylimidazolium tetrafluoroborate (BMIM‐BF4), as well as a deep eutectic solvent (DES) based on ethylene glycol and choline chloride, were used. The results obtained confirm that time to ignition, heat release rate (HRR), total mass loss, as well as the composition of the gases released during tests depend on the composition of the formulations. Addition of liquid electrolyte is found to reduce the time to ignition by up to 10% and the burning time by between 28% and 60% with the added benefit of reducing the HRR by at least 34%. Gaseous products such as CO2, CO, H2O, CH4, C2H2, N2O, NO, and HCN were detected for all formulations with the gases SO2, NH3, HCl, C2H4, and NH3 found to be for certain formulations only

Membrane transport of inorganic acids with α- aminophosphoryl compounds

Transport of some inorganic acids (HCl, HBr, HClO4, HNO 3, H2SO4, and H2PO4) through hydrophobic impregnated membranes with aminophosphoryl compounds of the general formula R 2 1 P(O)CH2•NR 2R3 [R1 = C4H9(C 2H5)CHCH2O, R2 = C4H 9, R3 = C8H17; R1 = R3 = C8H17, R2 = H; R1 = C10H2, R2 = R3 = C2H 5; R1 = C10H21, R2 + R3 = (CH2)2O(CH2)2; R1 = C8H17, R2 = H, R3 = 2-quinolyl] and dodecylamine as carriers was studied. The membrane phases were solutions of the carriers in phenylcyclohexane and tridecane. General regularities that correlate the structure of an aminophosphoryl compounds to its transport properties toward inorganic acids were established. The largest flows are characteristic of perchloric, nitric, and hydrobromic acids. ©2005 Pleiades Publishing, Inc

Finite Element Simulation of the Performance of a Structural Electrolyte

This contribution concerns the multi-scale and multi-physics finite element analysis of structural power composites, i.e. multifunctional composites with simultaneous load bearing and energy storing functionality. We are particularly interested in obtaining the effective macro-scale properties of the structural electrolyte by employing computational homogenization to capture the effects of micro-heterogeneities on the sub-scale. The sub-scale problem is defined by a statistical volume element that is numerically generated, and the effective properties are obtained by conducting virtual material testing on the synthetic microstructure

DINO-VITS: Data-Efficient Noise-Robust Zero-Shot Voice Cloning via Multi-Tasking with Self-Supervised Speaker Verification Loss

Recent progress in self-supervised representation learning has opened up new opportunities for training from unlabeled data and has been a growing trend in voice conversion. However, unsupervised training of voice cloning seems to remain a challenging task. In this paper we propose a semi-supervised zero-shot voice cloning approach that works by adapting a HuBERT-based voice conversion system to the voice cloning task and shows the robustness of such a system to noises both in training data (we add noises resulting in up to 0db signal-to-noise-ratio to 35% of training data with no significant degradation of evaluation metrics) and in the target speaker reference audio at inference. Moreover, such a method does not require any type of denoising or noise-labeling of training data. Finally, we introduce a novel multi-tasking approach by incorporating self-supervised DINO loss into joint training of a CAM++ based speaker verification system and a unit-based VITS cloning system. We show that it significantly improves the quality of generated audio over baselines, especially for noisy target speaker references.Comment: Submitted to ICASSP 202

Reaction of 2,3-dimethylmercaptopropionic acid with methylene blue as an indicator reaction for the kinetic determination of selenium

A new indicator reaction between 2,3-dimethylmercaptopropionic acid and Methyl Blue was proposed for the kinetic determination of selenium. The optimal reaction conditions were found. A linear relationship was observed between the induction period and the Se(IV) concentration in the range between 0.9 and 9.6 ng/mL Se. Masking with EDTA and solvent extraction with diethyldithiophosphoric acid can be used for the separation of interfering elements forming complexes with the reagent. © 2001 MAIK "Nauka/Interperiodica"

Direct transformation of bijels into bicontinuous composite electrolytes using a pre-mix containing lithium salt

We report a general strategy for making bicontinuous conducting composite materials in a controllable fashion. Our approach begins with a bicontinuous interfacially jammed emulsion gel (bijel) fabricated from a pre-mix containing a salt, here bis(trifluoromethane)sulfonimide lithium salt (LiTFSI). The resulting structure has interpenetrating ionic conducting and non-conducting domains comprised of an ethylene carbonate (EC)-rich phase and a p-xylene (xylene)-rich phase of roughly equal volumes. This is the first time that bijel fabrication has been carried out with the underlying two-fluid phase diagram modified by a salt. Diffusing polystyrene (PS) into the xylene-rich phase enables the facile formation of a PS-filled bijel in place of a multi-step polymerization of added monomers. Drying the bijel results in the selective removal of xylene, reducing the total sample volume without compromising the morphology of the EC domain. Electrochemical impedance spectroscopy of the composite electrolytes confirms the existence of ion conducting pathways

Хирургическое лечение полипозного полисинусита у больных бронхиальной астмой и аспириновой триадой

We observed 302 patients with polypous polysinusitis combined with bronchial asthma and/or aspirin intolerability. They underwent endoscopic polysinusotomia. To prevent exacerbations of the pulmonary pathology and polyposis relapses all the patients were divided into 3 groups. The 1st group (146 patients) received corticosteroids before and after the operation. The 2nd group (133 patients) was given the same therapy before and after the operation and they were treated with topic corticosteroids in postoperative period not less than 6 months. The 3rd group (23 patients) received 3 plasmapheresis procedures each before the operation and topic corticosteroids for long time. As a result, there were no exacerbations of the lower airway pathology at the early postoperative period and all the patients came through the operation well. The polyposis relapses in the 1st group became quite early: for 3 yrs they have been diagnosed in 96.9% of the patients. In the 2nd group the polyposis relapses have been become for 3 yrs in 30.1% of the patients. The 3rd group patients have not had the polyposis relapses during this period.Под наблюдением находились 302 пациента с полипозным полисинуситом в сочетании с бронхиальной астмой и/или непереносимостью аспирина, которым выполнена эндоскопическая полисинусотомия. Для предотвращения обострения бронхолегочного процесса и рецидива полипоза больные были разделены на 3 группы. 1-й группе больных (146) проводилось лечение кортикостероидами в пред- и послеоперационном периоде. 2-я группа больных (133) получала аналогичную терапию в пред- и послеоперационном периоде и длительно в послеоперационном периоде, не менее 6 мес, а также топические кортикостероиды (беклометазона дипропионат). Больным 3-й группы (23) в предоперационном периоде проводили по 3 сеанса плазмафереза и назначали на длительный срок топические кортикостероиды. В результате проведенного лечения у больных наблюдаемых нами групп в ближайшем послеоперационном периоде ни в одном случае не зарегистрировано обострения процесса со стороны нижних дыхательных путей. Они удовлетворительно перенесли операцию. Рецидив полипоза в 1-й группе наступал достаточно быстро, и в течение 3 лет возник у 96,9% пациентов. Во 2-й группе рецидив полипоза в течение 3 лет возник у 30,1% пациентов, а в 3-й группе больных за истекший срок рецидива полипоза не было