[A case of COVID-associated encephalopathy in a patient with multiple sclerosis].

A case of acute encephalopathy manifested with impaired consciousness, hemichorrhea, speech and cognitive impairment in a female patient with COVID-19 and multiple sclerosis is presented. In the literature, there are isolated reports of such a combination of diseases, and therefore difficulties arise in carrying out differential diagnosis and prescribing therapy. Given the limited knowledge about the long-term consequences of COVID-19, systematic analysis of such cases and follow-up of such patients is necessary.

[CT-predictors of unfavorable outcome in hemorrhagic stroke].

Objective: To analyze the relationship between the changes on non-contrast CT of the head in patients with acute hemorrhagic stroke and its unfavorable outcome within 90 days.

Material And Methods: The retrospective analysis of the clinical, demographic parameters and results of CT of the head of all patients admitted to the stroke unit of the district hospital between January 2015 and December 2021 was performed. The data of 131 patients were included in the work (52% males), average age was 65.

Cubane Dimerization: Cu vs Cu Copper Iodide Clusters.

Copper(I) halides are well-known for their structural diversity and rich photoluminescence properties, showing great potential for the development of solid-state lighting technology. A series of four molecular copper iodide clusters based on the [CuI] cubane geometry is reported. Among them, [CuI] octanuclear clusters of rare geometry resulting from dimerization of the tetranuclear counterparts were also synthesized.

Cesium Oxo-fluoro-aluminates in the CsF-AlO System: Synthesis and Structural Characterization.

In an experiment combining various approaches, a precise examination of a portion of the phase diagram of a CsF-AlO system was carried out up to 40 mol% AlO. CsF-AlO solidified mixtures have been investigated using high-field solid-state NMR (Cs, Al, and F) spectroscopy and X-ray powder diffraction over a broad range of compositions with synchrotron powder diffraction and Rietveld analysis. A new cesium oxo-fluoro-aluminate, CsAlOF, was discovered, prepared, and structurally analyzed by synchrotron diffraction analysis.

[Digital technologies in the assessment of neurological status].

Digital technologies (DT) can be used at all stages of the neurologist's work with the patient. The medical professional can obtain online information on the patient's complaints and history. DT may help to assess cognitive functions, muscular power, details of the movements including gate.

[An analysis of clinical and laboratory characteristics of patients with ischemic stroke and COVID-19].

Objective: To analyze clinical and laboratory characteristics of patients with ischemic stroke associated with COVID-19.

Material And Methods: A retrospective analysis of all cases of COVID-19, including those complicated with ischemic stroke, admitted to the multispecialty infectious hospital in Ufa (Russia) in 2020, was performed. Multivariate analysis was used to identify the independent predictors of the development of ischemic stroke in patients with COVID-19.

[Electrocardiographic predictors of the poor outcome of hemorrhagic stroke].

Objective: To analyze the relationship between electrocardiogram (ECG) parameters in the acute period of hemorrhagic stroke and its poor outcome within 90 days.

Material And Methods: ECG data of 133 patients with hemorrhagic stroke recorded upon admission to the primary vascular department were analyzed.

Results: Eighteen percent out of 133 patients died within 90 days.

Solid-state P and Ag CP/MAS NMR as a powerful tool for studying of silver(I) complexes with N-thiophosphorylated thiourea and thioamide ligands.

A family of three- and four-coordinated silver(I) complexes of formulas [Ag(PPh ) L], [Ag(PPh )L], and [AgL] with N-thiophosphorylated thiourea and thioamide ligands of general formula RC(S)NHP(S)(OPri) [R = Ph, PhNH, iPrNH, tBuNH, NH ] have been studied by solid-state Ag and P CPMAS NMR spectroscopy. Ag NMR spectra have provided valuable structural information about Ag coordination, which is in good accordance with the available crystal structure data. The data presented in this work represent a significant addition to the available Ag chemical shifts and chemical shifts anisotropies.

[Socioeconomic factors and stroke].

Low socioeconomic status increases the risk of development of stroke by 67%, it also has negative influence on its severity and outcomes. The mortality among stroke survivors with low socioeconomic status is higher by 39% in comparison to those with high socioeconomic status. The link between socioeconomic status and increased risk of stroke and its poor outcomes could be explained by higher frequency of vascular risk factors, lower compliance, late presentation to hospital after a stroke onset and lower access to high-quality specialized medical care in some countries.

[Clinical and laboratory predictors of unfavorable outcome in hemorrhagic stroke].

Objective: The study was to analyze the relationship laboratory parameters of the blood in acute phase of hemorrhagic stroke and its unfavorable outcomes within 90 days.

Material And Methods: We performed retrospective analysis of 122 patients with hemorrhagic stroke from Dyurtyuli district hospital between 2015 and 2020. The laboratory parameters in patients with favorable and unfavorable outcomes were compared.

[Clinical manifestations of COVID-19 in children].

The neurological symptoms of COVID-19 in children (in Dyurtyuli area, Republic of Bashkortostan) are analyzed and brief review of the literature is undertaken in the paper. 137 children underwent swab test for COVID-19. The disease was diagnosed in 9 of them.

Polymorphs of RbScF: X-ray and Neutron Diffraction, Solid-State NMR, and Density Functional Theory Calculations Study.

The crystal structures of three polymorphs of RbScF have been determined through a combination of synchrotron, laboratory X-ray, and neutron powder diffraction, electron diffraction, and multinuclear high-field solid-state NMR studies. The room temperature (RT; α) and medium-temperature (β) structures are tetragonal, with space groups 4/ ( = 80) and 4/ ( = 10) and lattice parameters = 20.2561(4) Å, = 36.

Sodium Site Exchange and Migration in a Polar Stuffed-Cristobalite Framework Structure.

The study of ionic dynamics in solids is essential to understanding and developing modern energy technologies. Here we study the ionic dynamics of orthorhombic NaMgSiO, an interesting case of a polar stuffed-cristobalite-type structure that contains two inequivalent Na sites within the channels of the magnesium silicate tetrahedral framework. Its preparation by a solid-state reaction method favors the presence of ∼2% of Na vacancies, converting it into a pure Na ionic conductor with an optimized ionic conductivity of ∼10 S cm at 200 °C.

Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors.

A series of NiO/C nanocomposites with NiO concentrations ranging from 10 to 90 wt% was synthesized using a simple and efficient two-step method based on non-isothermal decomposition of Nickel(II) bis(acetylacetonate). X-ray diffraction (XRD) measurements of these NiO/C nanocomposites demonstrate the presence of β-NiO. NiO/C nanocomposites are composed of spherical particles distributed over the carbon support surface.

X-ray Diffraction, NMR Studies, and DFT Calculations of the Room and High Temperature Structures of Rubidium Cryolite, RbAlF.

A crystallographic approach incorporating multinuclear high field solid state NMR (SSNMR), X-ray structure determinations, TEM observation, and density functional theory (DFT) was used to characterize two polymorphs of rubidium cryolite, RbAlF. The room temperature phase was found to be ordered and crystallizes in the (no. 70) space group with = 37.

Local Structure and Dynamics in Methylammonium, Formamidinium, and Cesium Tin(II) Mixed-Halide Perovskites from Sn Solid-State NMR.

Organic-inorganic tin(II) halide perovskites have emerged as promising alternatives to lead halide perovskites in optoelectronic applications. While they suffer from considerably poorer performance and stability in comparison to their lead analogues, their performance improvements have so far largely been driven by trial and error efforts due to a critical lack of methods to probe their atomic-level microstructure. Here, we identify the challenges and devise a Sn solid-state NMR protocol for the determination of the local structure of mixed-cation and mixed-halide tin(II) halide perovskites as well as their degradation products and related phases.

[The impairment of bone-mineral metabolism in the development of benign paroxysmal positional vertigo].

Benign paroxysmal positional vertigo (BPPV) is one of the most common causes of systemic vertigo in clinical practice. The results of recent research demonstrated the decrease of bone mineral density, level of vitamin D and estrogen in blood serum in patients with BPPV. In summary these data points at the relationship between osteoporosis/osteopenia and BPPV.

Insight into the factors influencing NMR parameters in crystalline materials from the KF-YF binary system.

Solid state NMR signals are very sensitive to the local environment of the observed nucleus; however, their interpretation is not straightforward. On the other hand, first-principles DFT calculations of NMR parameters can now be applied to periodic compounds to predict NMR parameters. Thus, ab initio calculations can help to interpret the NMR spectra exhibited by complex materials, to assign NMR lines to structural environments, and even to enlighten the environmental factors influencing the NMR parameters for a given nucleus.

Oxo- and Oxofluoroaluminates in the RbF-AlO System: Synthesis and Structural Characterization.

Precise research on the RbF-AlO system was carried out by means of combining X-ray powder diffraction, high-field solid-state NMR spectroscopy, and thermal analysis methods. α-RbAlF, RbAlO, RbAlO, and new phase, RbAlOF, were identified in the system. The structure of this new rubidium oxofluoroaluminate was determined.

Luminescence Vapochromism of a Dynamic Copper Iodide Mesocate.

A copper iodide complex coordinated by three phosphine ligands with the formula [Cu I (Ph PC (C H )C PPh ) ] exhibits solvatochromic and vapochromic luminescence properties. A mechanism based on solvent-dependent molecular motion appears to occur. The highly contrasted response observed upon THF solvent exposure makes this complex an appealing candidate for chemical sensor applications.

Unveiling the role of the hexagonal polymorph on SrAlO-based phosphors.

In persistent luminescence materials, the SrO-AlO system has been mainly studied due to its chemical stability, higher photoluminescence response and longest green-afterglow times. Specifically, the research has focused on SrAlO doped with europium and dysprosium. SrAlO has two polymorphs: monoclinic polymorph (space group 2) and hexagonal polymorph (space group 622).

Evaluation of Ligands Effect on the Photophysical Properties of Copper Iodide Clusters.

Luminescent materials based on copper complexes are currently receiving increasing attention because of their rich photophysical properties, opening a wide field of applications. The copper iodide clusters formulated [CuIL] (L = ligand), are particularly relevant for the development of multifunctional materials based on their luminescence stimuli-responsive properties. In this context, controlling and modulating their photophysical properties is crucial and this can only be achieved by thorough understanding of the origin of the optical properties.

Combined Approach for the Structural Characterization of Alkali Fluoroscandates: Solid-State NMR, Powder X-ray Diffraction, and Density Functional Theory Calculations.

The structures of several fluoroscandate compounds are presented here using a characterization approach combining powder X-ray diffraction and solid-state NMR. The structure of KScF was fully determined from Rietveld refinement performed on powder X-ray diffraction data. Moreover, the local structures of NaScF, LiScF, KScF, and NaScF compounds were studied in detail from solid-state F and Sc NMR experiments.

(Oxo)(Fluoro)-Aluminates in KF-AlO System: Thermal Stability and Structural Correlation.

Precise investigation of part of the phase diagram of KF-AlO system was performed in an experiment combining different techniques. Solidified mixtures of KF-AlO were studied by X-ray powder diffraction and high-field solid-state NMR spectroscopy over a wide range of compositions. To help with the interpretation of the NMR spectra of the solidified samples found as complex admixtures, we synthesized the following pure compounds: KAlO, KAlO, α-KAlF, KAlF, and KAlOF.

[Autonomic dysfunction in patients with multiple sclerosis].

Aim: To optimize the early diagnosis of the autonomic dysfunction in patients with MS.

Material And Methods: The main group consisted of 46 patients: 15 men and 31 women with MS (McDonald, 2005), the average age was 33.35±9.