The performance of energy storage devices is largely determined by the properties of their electrode materials, making it essential to develop well-designed materials capable of delivering high efficiency across various applications. In this study, monoclinic-phase Bismuth Vanadate (Bi4V2O11) nanostructures were synthesized via a facile hydrothermal method and doped with varying weight percentages of Thulium (Tm). The structural and morphological characteristics of Tm-doped Bi4V2O11 were analyzed using XRD, Raman spectroscopy, XPS, HRTEM, FESEM, and subsequently evaluated as electrode materials for electrochemical energy storage. Tm doping induces structural distortions and oxygen vacancies, leading to improved crystallinity, enhanced ionic conductivity, and superior electrochemical stability. Among the synthesized materials, 6 % Tm/Bi4V2O11 demonstrated exceptional electrochemical performance, achieving a high areal capacitance of 112.7 mF/cm2 at a scan rate of 10 mV/s-significantly surpassing pristine Bi4V2O11 (4.6 mF/cm2). Additionally, it exhibited an impressive energy density of 9.4 mWh/cm2 at a power density of 2500 mW/cm2. Furthermore, the material demonstrated remarkable cycling stability, retaining 110 % of its initial capacitance after 10,000 cycles at 25 mA/cm2. Electrochemical analysis revealed a decrease in diffusion-controlled capacitance with increasing scan rate, highlighting the diffusion-processed charge storage mechanism governed by the materials. To evaluate practical applicability, an asymmetric supercapacitor (ASC) was fabricated using 6 % Tm/Bi4V2O11 as the cathode and activated carbon (AC) as the anode. The assembled device demonstrated robust cyclic stability, retaining 85 % capacitance and 100 % coulombic efficiency after 10,000 cycles. These results establish 6 % Tm/ Bi4V2O11 as a promising nanostructured electrode material with superior electrochemical characteristics, making it a promising electrode for next-generation energy storage applications.

BackgroundCOVID-19 cutaneous manifestations were first reported in February 2020, after a rash was listed as a sign of the virus.[1] In 2020, an article emphasized the absence of images among skin of color with respect to COVID-19 skin manifestations.[2] Without detection and treatment, individuals with skin of color may experience a disproportionate incidence of morbidity and mortality.[3] Discussion of cutaneous findings in skin of color remains limited to reviews and individual studies, and although there are meta-analyses that assess systemic manifestations among different races, investigation of various symptoms among people with skin of color, and overall comparison of systemic manifestations to cutaneous manifestations remains unreported to our knowledge.[4]ObjectivesThe objective of this meta-analysis was to quantify the frequency of reported cutaneous and systemic manifestations among different races.MethodsA search for studies on dermatologic and systemic manifestations associated with COVID-19 published before February 2022 was run on PubMed and Embase. Two independent reviewers screened abstracts and full manuscripts for eligibility based on the following criteria: studies included children or adult patients diagnosed with COVID-19 or temporal association to COVID-19, studies included assessment of cutaneous and systemic manifestations of individuals, studies identified cutaneous and systemic manifestations among different races, and studies were peer-reviewed case reports, original studies, systematic reviews, meta-analyses, and letters to the editor. Race and the most common systemic and dermatologic manifestations were extracted from included studies. Event rates for each outcome by race were pooled using a single-arm meta-analysis and the random-effects model to account for heterogeneity.ResultsSeventeen studies, involving 2,525 patients, were selected. Pooled estimates for multisystem inflammatory syndrome (MIS) for Black, White, and Asian cases were 28% (95% CI, 18.8-40.7, p=0.001), 40.1% (95% CI, 23.0-60.1, p=0.332), and 20% (95% CI, 13.2-29.2, p=0.000), respectively. The most common manifestations were pyrexia, elevated inflammatory markers, cardiac dysfunction, and gastrointestinal symptoms. The frequency of elevated inflammatory markers within Black cases surpassed White and Asian cases (30.9%, 28.7%, and 19.6%). The percentage of Black cases for cardiac dysfunction exceeded White and Asian cases (38.8%, 25%, and 21.2%,). The frequency of pyrexia reported among Asian and Black cases exceeded White cases (26.7%, 24.3%, and 15.3%). The prevalence of dermatologic manifestations in Black cases was 4.2% (95% CI, 0.8-19.8, p=0.000) compared to White and Asian cases, 70.7% (95% CI, 42.9-88.6, p=0.139) and 11.7% (95% CI, 9.0-15.1, p=0.000).ConclusionThis meta-analysis highlights the discordance in reporting systemic manifestations compared to dermatologic manifestations by race in COVID-19 patients. Further investigation is needed to determine the underlying cause.References[1]Guan W, Ni Z, Hu Y, Liang W, Ou C, He J, et al. Clinical Characteristics of Coronavirus Disease 2019 in China. N Engl J Med 2020;382:1708–20. https://doi.org/10.1056/NEJMOA2002032/SUPPL_FILE/NEJMOA2002032_DISCLOSURES.PD F. [2]Lester JC, Jia JL, Zhang L, Okoye GA, Linos E. Absence of images of skin of colour in publications of COVID- 19 skin manifestations. Br J Dermatol 2020;183:593. https://doi.org/10.1111/BJD.19258. [3]Fix AD, Peña CA, Strickland GT. Racial Differences in Reported Lyme Disease Incidence. Am J Epidemiol 2000; 152:756–9. https://doi.org/10.1093/AJE/152.8.756. [4]Pangti R, Gupta S, Nischal N, Trikha A. Recognizable vascular skin manifestations of SARSCoV-2 (COVID-19) infection are uncommon in patients with darker skin phototypes. Clin Exp Dermatol 2021; 46:180–2. https://doi.org/10.1111/CED.14421.Acknowledgements:NIL.Disclosure of InterestsNone Declared.

We studied the photocatalytic behaviour and the synthesis of praseodymium doped bismuth vanadate. One-pot hydrothermal technique is used to develop Pr/Bi4V2O11 where Pr3 + is replaces confirmed V 5 + in the lattice. The transformation of phase from monoclinic to tetragonal is determined by X-ray diffraction and Raman spectra. This transformation is probably due to the doping of Pr3 + in Bi4V2O11 lattice. Scan-ning electron microscopy and X-ray photoelectron spectroscopy were used to investigate the morphol-ogy, elemental compositions, and chemical properties of the synthesized photocatalysts. The absorption range and bandgap energy of the photocatalysts were categorised by using UV-visible diffuse reflectance spectroscopy. Dye derivative (MB dye) and drug derivative (paracetamol) are used to determine the per-formance of photocatalyst in the presence of visible-light. 40% Pr/Bi4V2O11 exhibiting outstanding pho-tocatalytic activity. The photoluminescence spectra revealed that the recombination of photogenerated charges was considerably reduced and the photocatalytic activity was enhanced by the doping of Pr3 + for V 5 + in the Bi4V2O11 lattice. The quenching analyses were carried out to detect active radical species in the photocatalytic process and understand the mechanism better. (c) 2022 Elsevier B.V. All rights reserved.

A simple hydrothermal method was used to synthesize Bi4V2O11 and Yb/Bi4V2O11 nanoparticles. XRD and Raman scattering demonstrated that the phase transitioned from monoclinic phase to tetragonal phase, mainly due to Yb3+ doping into the lattice of Bi4V2O11 at V5+ site. XRD, Raman, TEM, SEM, EDS, DRS, photoluminescence, and impedance spectroscopy were used to evaluate the effect of Yb3+ ions in the lattice. The EDS spectra revealed the elemental composition of the various elements present in the samples. The direct band gap was determined by DRS spectra and it showed red shift with increasing Yb3+ ion concentration. Raman scattering spectroscopy analysis showed vibrational characteristics and revealed that the oxygen vacancy increased dramatically with doping concentration. The number of oxygen vacancies and their interactions with dopant cations significantly impact the electrical properties of Yb/Bi4V2O11. The photocatalytic efficiencies of the prepared samples were investigated by degrading MB and RhB with visible light, with the 5% Yb/Bi4V2O11 material achieving the best performance. The photoluminescence spectroscopy results revealed that doping of Yb3+ at V5+ site in the Bi4V2O11 lattice significantly reduced photogenerated charge recombination and improved photocatalytic performance. We have studied in detail the effect of physical factors such as initial dye concentration, catalyst concentration, and pH on the rate of the photocatalytic removal. The detailed investigation of the adsorption isotherm models was derived using linear regression analysis, and its significance was confirmed by comparing experimental results to computed data. Based on the intermediate compound production detected by GCMS, a plausible degradation route and mechanism predicated on the electrochemical performance of the synthesized catalyst and trapping tests were also described.

Background Technology has facilitated widespread general access to health information publicly. However not all health information available for consumption is accurate, reliable, updated, and of equal value to people seeking to be informed advocates of their own health. This cross-sectional study sought to establish the preferred resources patients with rheumatologic conditions seek out for health information. This study provides recent evidence to inform patient education, open dialogue, with the hope to improve clinical practice and patient outcomes. Objectives To describe utilization of health information preferences to inform physician-patient shared decision-making and best clinical practice. Methods From December 2019 to March 2020, 236 Rheumatoid Arthritis (RA) and 43 Psoriatic Arthritis (PsA) patients receiving care at an academic rheumatology practice in the USA were enrolled in this study. Subjects were provided with a brief, voluntary, and anonymous Qualtrics survey which gathered data on health information utilization, willingness to discuss information gathered with physicians, and desire for resources to be provided. Results Modern technology has provided multiple ways for patients to gather additional health information of variable accuracy. This information impacts patient willingness to adhere to clinical recommendations. These data show that patients seek open and honest discussion of health information gathered from other sources. A substantial percentage of patients also desire guidance towards reliable online health resources from their physicians. Conclusion Modern technology has provided multiple ways for patients to gather additional health information of variable accuracy. This information impacts patient willingness to adhere to clinical recommendations. These data show that patients seek open and honest discussion of health information gathered from other sources. A substantial percentage of patients also desire guidance towards reliable online health resources from their physicians. REFERENCES: NIL. Acknowledgements: NIL. Disclosure of Interests None Declared.Figure 1

In order to enhance the performance of bismuth vanadium oxide (Bi4V2O11) we synthesized La doped Bi4V2O11 in different concentrations (La = 5%, 10%, 15%) by using sol-gel method. The nanoparticles are stabilized in tetragonal phase in the range of 50 nm particle size. With the help of XPS it was confirmed that in La/Bi4V2O11 lattice La is in 3+ oxidation state and replaces Bi3+ in the lattice. SEM and EDX show the amorphous nature and chemical compositions of the nanoparticles. The structural analysis and energy calculations revealed that La3+ ion replaces Bi3+ in Bi4V2O11 lattice without disturbing its host structure. The PL results revealed that photogenerated charges recombination was significantly reduced. The photocatalytic degradation of MB under visible light illumination is performed and the best photocatalytic activity among various compositions of La/Bi4V2O11 is shown by 15% La/Bi4V2O11 nanoparticles. 15% La/Bi4V2O11 photocatalyst show 98% of degradation of MB in 120 mins.

With an increasing demand for industrial dyes in our daily lives, water conditions have become worse. Recently, the removal of such environmentally hazardous pollutants from wastewaters through photocatalytic degradation has been drawing increased attention. Three mesoporous nanophases of BiFeVOx.y as (Bi2FeIIIV1−yO5.5−y) visible light photocatalysts were synthesized in this study using ethylene glycol-citrate sol-gel synthesis combined with microwave- assisted calcination. X-ray diffraction (XRD), differential thermal analysis (DTA), FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy coupled with energy dispersive X-ray spectrometry (SEM-EDS), nitrogen adsorption-desorption isotherms, and UV-Vis diffuse reflectance spectrophotometry (UV-Vis/DRS) were used to characterize the BiFeVOx.y photocatalysts. The visible light-induced photocatalytic activities of the BiFeVOx.y phases were evaluated by the degradation of methylene blue (MB) dye in aqueous solution at pH ~10.0. The results of this study show that the combination of doping strategy with the utilization of advanced synthesis methods plays an important role in improving the structure and surface properties of BiFeVOx.y phases, and thereby enhancing their adsorption and photocatalytic efficiencies. The synthesized mesoporous tetragonal γ-BiFeVOx.y nanophase has been proven to be a potential visible-light photocatalyst for the degradation of organic dyes.

BackgroundPatient-Reported Outcome Measures (PROMs) give us direct, immediate evidence of patient experience. Pain is a chronic, debilitating, multifactorial, presenting symptom that remains a difficult target to treat in populations with Inflammatory Arthritides.1 Increasingly, cannabis products are being utilized and investigated for their potential analgesic and immune-modulatory effects.2 The legislation and form of cannabis products deployed as therapy varies around the world and across populations. More data on usage and patient reported outcomes is needed to guide better clinical practice and inform sound legislative policy.ObjectivesTo describe PROMs of pain, stiffness with cannabis use in a population of patients with Rheumatoid Arthritis (RA) or Psoriatic Arthritis (PsA).MethodsThis investigation was a monocentric, cross-sectional study. Inclusion criteria were adults receiving care at a University Rheumatology practice in Central Florida, USA from December 2019 to March 2020 who provided informed, written consent. Those who consented were provided with a brief, voluntary, and anonymous Qualtrics survey which queried patient-reported prevalence and outcome measures of short and long-term pain relief. 236 RA and 43 PsA patients were enrolled in this study. All subjects met the criteria for Rheumatoid, Psoriatic, or Inflammatory Arthritis (seronegative RA). Subjects’ scores before and after cannabinoid use were compared with a paired T-test after the parametric nature of the data was established. Ethical approval was obtained from the University of Central Florida Institutional Review Board (Study00001041).ResultsCannabis product usage was reported in 16.95% of RA subjects (40/236) and 11.63% of PsA subjects (5/43). Of this group, 71% (RA) and 40% (PsA) endorsed current usage. Inhalation was the most prevalent form used in RA (27.50%). In PsA, the most commonly reported forms were liquid (30%) and topical/skin (30%). On the 10-point pain scale, RA patients reported a significant reduction in average pain by 1.83±1.91 points in the long-term and 2.28±2.10 points in the short-term. Those with PsA reported a significant reduction in average pain by 1.60±0.89 points in the long-term and 1.80±0.84 points in the short term. Stiffness was also reduced in the RA group (7.3%). 17.5% of patients with RA using cannabinoids reported side effects not leading to cessation.ConclusionIn an academic rheumatology practice population, a substantial number of RA and PsA patients are choosing to self-treat with cannabis therapy to manage their pain and other symptoms. Subjects reported significant reductions in both short- and long-term pain; some patients reported total pain resolution with ongoing cannabinoid therapy. Stiffness was also reduced in a subset of RA patients. Subjects that reported adverse effects did not find these severe enough to warrant cessation. These study results may allow for a more open discussion to improve safety and optimize outcomes. Additionally, the significant prevalence of usage and pain reduction reported provide a compelling rationale for further interventional studies in populations with Inflammatory Arthritides.References[1]Scott DL, Wolfe F, Huizinga TW. Rheumatoid arthritis. Lancet. 2010;376(9746): 1094-1108. doi: 10.1016/s0140-6736(10)60826-4.[2]Fitzcharles, Mary-Ann et al. “Position Statement: A Pragmatic Approach for Medical Cannabis and Patients with Rheumatic Diseases.” The Journal of Rheumatology vol. 46,5 (2019): 532-538. doi:10.3899/jrheum.181120.Disclosure of InterestsTara Jehu: None declared, Neha Bhaskar: None declared, Shazia Beg: None declared, Kathlyn Camargo Macias: None declared, Sweta Chalise: None declared, Neha Bhanusali Consultant of: healthcare consultant (non-pharmaceutical)

In this work we report the influence of Eu3+ on the structural, optical and conducting properties of bismuth vanadium oxide (Bi4V2O11). Various Eu3+ concentrations (0 < x < 0.20) was synthesized using the simple hydrothermal method. The results of structural characterization show that the monoclinic phase (alpha) is maintained during the inclusion of Eu3+ dopant into Bi4V2O11 lattice structure. TGA/DTA analysis was done up to 800 degrees C to measures the stability and weight loss. Impedance spectroscopy measurements reveal that the Eu3+ insertion improve the conducting properties as compared with the Bi4V2O11 sample. The maximum ionic conductivity is achieved with 0.20Eu/Bi4V2O11 (1.271 x 10(-2) Scm(-1) at 300 degrees C and 0.874 Scm(-1) at 500 degrees C) and low activation energy of 0.43 and 0.32eV, characteristic of oxygen vacancy as a conducting mechanism.

The photoreduction of Cd (II) to Cd (0) was performed using Bi4V2O11, which was tremendously enhanced by Tb3+-doped Bi4V2O11. The relationship between charge carrier isolation and light harvesting was studied in depth in this research, and a promising technique for fabricating effective photocatalysts for heavy metals was discovered. Lattice disorder effects due to size variance between V5+ and Tb3+ cations in Bi4V2O11 nanomaterials substituted with an invariable Tb3+ cation at different concentrations (x = 15, 20, and 25%). Bi4V2O11 and 15% Tb/Bi4V2O11 evidenced a coexistence of monoclinic (α-phase) with a CS/m symmetry, while 25% Tb/Bi4V2O11 was tetragonal (γ-phase) with an I4/mmm symmetry. Raman scattering experiments elucidated the changes in Bi4V2O11 lattice corresponding to oxygen motion, suggesting significant destabilization of the VO4 tetrahedra after addition of Tb3+. The SEM micrograph depicted a disparity in the microstructure with reduced grain size in 25% Tb/Bi4V2O11 samples. However, the TEM micrographs of 25% Tb/Bi4V2O11 nanomaterials revealed that crystallite sizes of 25-35 nm were obtained, presenting a single tetragonal phase, highly homogeneous in nature. Impedance spectroscopy was used to study the conductivity of these compounds in the temperature range of 300 °C. At 300 °C, the compounds with x = 25% showed a conductivity of 15.92 S cm-1. The conductivity values were found to be comparable with the highest values reported in the literature for similar compounds.

In the current research, BiVO4 samples of co-doped copper and iron (Cu/Fe–BiVO4) were synthesized using the gel combustion technique. The synthesized preparations for the degradation of phenol with visible light radiation were used as a photocatalyst. Synthesized samples have been characterized by X-ray diffraction (XRD), UV–Visible spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). In order to determined the particle size XRD and TEM plays an important role which was calculated in the range of 22–30 nm. Morphology of the samples were revealed by SEM. A comparison of the kinetics of photocatalytic degradation of phenol by Cu/Fe–BiVO4 was performed under visible light. The XRD patterns show the various phases of the synthesized samples. The Cu/Fe–BiVO4 sample has higher photocatalytic activity as compared to parent BiVO4. For phenol degradation under visible light radiation, the degradation mechanism was suggested.

The new oxide ion conductor related to the BIMEVOX family, BINICDVOX has been synthesized in the composition range 0.05 ≤ x ≤ 0.20, using the sol-gel reaction route. The highly conducting tetragonal γ-type is stabilized down to room temperature for the compositions x ≥ 0.17. The conductivity and activation energies were calculated for all the synthesised samples, and it was found that as the thermal energy increases, the movement of oxide ion vacancy increases. The effect of the Ni-Cd double substitution on the electrical properties of Bi4V2O11 has been studied and found that the electrical conductivity has been significantly increased for the compositions x = 0.17 and x = 0.20.

Recently, Bi4V2O11 as an electrolyte material has pulled in considerable consideration because of its remarkable novel applications. In this article, novel, dysprosium-doped (x = 0.2, 0.3, 0.4, and 0.5) Bi4V2O11 (Dy/BVO) nanoparticles have been synthesized by sol-gel strategy. The photocatalyst Dy/BVO nanoparticles exhibit higher photocatalytic efficiency than BVO nanoparticles assessed by debasement of tetracycline drug under visible light illumination. Our work focuses on the phase transformation, conducting properties, and mechanisms of the Dy/BVO nanoparticles in relation to execute some methods of processing and manufacturing product in commercial applications. The characterization of Dy/BVO was performed by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, and UV-vis analysis. ac impedance spectroscopy was used to analyze the conducting behavior of synthesized nanoparticles in the temperature range 100-600 °C. The photocatalytic activity revealed that Dy/BVO remarkably enhanced the photocatalytic activity. This is the first report that Dy/BVO can destroy the drug effluent which is coming from the drug industry and also worried about the human health hazards.

Samples of BIPBVOX.x (Bi2V1−x Pb x O5·5−x/2), in the composition (x) range 0·05 ≤ x ≤ 0·20, were prepared by the ethylene glycol–citric acid sol–gel synthesis route. Structural investigations were carried out by X-ray diffraction, Fourier transform infrared spectroscopy and differential thermal analysis. The highly conducting γ′-phase was effectively stabilized at room temperature (35°C) for compositions with x ≥ 0·17. Alternating current impedance spectra revealed that the conductivity is mainly due to the grain contribution to oxide ion conductivity. At 300°C, the highest value of conductivity (6·234 × 10−5 S/cm) was obtained for the composition x = 0·15, while the highest value of conductivity at 600°C (0·65 S/cm) was observed for x = 0·17. Cyclic voltammetric measurements showed reversible redox reactions of vanadium and irreversible redox reaction of the bismuth (III) ion (Bi3+) in the BIPBVOX system during the first cathodic and anodic sweep. However, a higher stability against the reduction of the bismuth (III) ion to metallic bismuth was seen for x = 0·20.

New samples of the Bi2Zn0.1-xTixV0.9O5.35+x; 0.02 x 0.08 system have been synthesized through a standard solid-state reaction route. XRD analysis and differential thermal analysis have been used to characterize the phase structure of samples. The phase is stabilized to room temperature in all investigated samples. The electrical properties of the BIZNTIVOX system have been studied by using AC impedance spectroscopy. An AC impedance response as a function of frequency (20 Hz-1 MHz) has been used to investigate the electrical conductivity and the dielectric permittivity in the temperature range of 150 degrees C-700 degrees C. In this temperature range, the phase transition to has been observed in all the compositions studied. AC impedance spectroscopy indicates that the resistance of samples decreases with increase of temperature. The ionic conductivity of samples appeared as a two-line region in Arrhenius dependence. At 300 degrees C, the highest ionic conductivity is shown by the composition x = 0.05 (sigma(300) = 1.35 x 10(-4) S cm(-1)).

Bi2Cu0.1−xAlxV0.9O5.35−x/2−δ, 0.02 ≤ x ≤ 0.08, were synthesized by standard solid-state reaction route. Structural and electrical properties of samples are characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), Fourier transform infrared (FT-IR) and alternating current (AC) impedance spectroscopy. The tetragonal γ′ phase structure is preserved to room temperature with compound x = 0.02. The stabilization of β orthorhombic phase is observed for compositions 0.04 ≤ x ≤ 0.05. As the Al content increases, the monoclinic α phase is evidenced for materials 0.06 ≤ x ≤ 0.08. The electrical investigation of Bi2Cu0.1−xAlxV0.9O5.35−x/2−δ system has been performed in the frequency range from 20 Hz to 1 MHz using AC impedance spectroscopy. The impedance spectra indicate the two semicircle arcs associated with the bulk and grain boundary resistances at temperature below ∼450 ○C. The conductivity generally changes when Al is substituted. The highest conductivity at 300 ○C (σ = 2.55 × 10−4 S cm−1) is shown for x = 0.02.

Bi4V2O11-delta has been doped with Ce and Cd to study double substitution. The system with various dopant concentrations (0.07 <= x <= 0.30) was prepared by the standard solid-state reaction method. The correlation between the polymorphism and oxide ion performance was well investigated as a function of temperature and composition with the help of thermal analysis, X-ray diffraction (XRD) and AC impedance spectroscopy. From XRD results it is seen that the high oxide ion conducting tetragonal gamma-phase is stabilized for x = 0.17. For the compositions x <= 0.10, monoclinic alpha-phase is retained at room temperature with clear evidence for two successive phase transitions alpha <-> beta and beta <-> gamma. For x = 0.13, beta <-> gamma phase transition is seen. However, the existence of order-disorder, gamma' <-> gamma transition was confirmed for x = 0.17. It is seen that the highest low-temperature ionic conductivity at 320 degrees C is 3.19 x 10(-4) S cm(-1) which was observed for x = 0.17.