Effect of strain on the electronic structure and polaronic conductivity of LiFePO.

Improving the electronic properties of active cathode materials can significantly impact the design of rechargeable batteries. In this study, we investigated the influence of micro-strain on the structural and electronic properties of LiFePO (LFP) by performing combined core-level spectroscopy analysis and electrical conductivity measurements. High-resolution X-ray diffraction measurements, followed by Rietveld refinement analysis, revealed an increase in unit cell parameters due to the enhanced micro-strain in the lattice structure.

An Iron-Based Fluorophosphate Cathode Material for K-Ion Batteries.

The development of a tavorite structured K- transition metal (T)- fluorophosphate, having earth-abundant Fe as the only T, crystallizing in the orthorhombic crystal system and facilitating stable-cum-reversible electrochemical K-extraction/insertion, has been reported here. Synthesized using low-cost precursors, KFePOF has also been found to be air-stable. Detailed information pertaining to the bonding/structure, including lattice site occupancy, have been obtained via diffraction, Raman spectroscopy and FTIR, with XPS, Mössbauer and ESR revealing the oxidation states and nature of Fe in the as-synthesized condition and upon being subjected to electrochemical potassiation/depotassiation.

Sublattice spin reversal and field induced Fespin-canting across the magnetic compensation temperature in YGdFeOrare-earth iron garnet.

In the present work Fesublattice spin reversal and Fespin-canting across the magnetic compensation temperature (TComp) are demonstrated in polycrystalline YGdFeO(YGdIG) by means of in-field57FeMössbauer spectroscopy measurements. Corroborating in-field57FeMössbauer measurements, both Fe& Gdsublattice spin reversal has also been manifested in hard x-ray magnetic circular dichroism (XMCD) measurements. From in-fieldMössbauer measurements, estimation and analysis of effective internal hyperfine field (Heff), relative intensity of absorption lines in a sextet elucidated unambiguously the signatures of Fespin reversal and field induced spin-canting of Fesublattices across TComp.

The Efficacy and Safety of Imusil® Tablets in the Treatment of Adult Patients With Mild COVID-19: A Prospective, Randomized, Multicenter, Open-Label Study.

Introduction Coronavirus disease 2019 (COVID-19) is a serious concern of the new era. Along with antiviral synthetic medications, there is a need to discover efficacious herbal antiviral medicines with minimum side effects in patients against COVID-19. This study aimed to assess the efficacy and safety of Imusil® among patients with mild COVID-19.

Influence of Access Cavity Design on the Fracture Strength of Endodontically Treated Teeth Restored Using Short Fiber-Reinforced Composite and High Strength Posterior Glass Ionomer Cement.

Aim: This in vitro study aimed to determine the influence of access cavity design and residual tooth structure and to compare the fracture resistance of the teeth post endodontically restored with short fiber-reinforced composite (GC everX Posterior; GC, India) and conventional posterior high-strength GIC (Glass Ionomer Cement) (GC Gold Label IX; GC, India).

Methods: Ninety extracted human mandibular molars were classified into five groups, i.e.

Assessment of plaque control efficacy using two types of toothbrushes in young adults: An interventional crossover study.

Objective: Evaluation of plaque removal efficacy of short-headed toothbrush as compared to conventional/traditional toothbrush.

Method: A total of 20 subjects meeting the inclusion criteria were considered. Selected subjects were divided into test and control groups.

Evaluation of the Safety and Efficacy of Favipiravir in Adult Indian Patients with Mild-to-Moderate COVID-19 in a Real-World Setting.

Purpose: To evaluate the safety and efficacy of favipiravir, which is prescribed for the treatment of patients with mild-to-moderate coronavirus disease 2019 (COVID-19) in India.

Patients And Methods: This was a prospective, open-label, multicenter, single-arm postmarketing study conducted in India. Patients with mild-to-moderate COVID-19 received favipiravir (3600 mg [1800 mg orally twice daily] on the first day, followed by 800 mg orally twice daily, up to a maximum of 14 days) as a part of their treatment.

Polar state in polycrystalline BaSnTiOthin film determined from ac- & dc-field studies.

The present work reports polarization response and the effects of- &-fields on 30% Sn doped BaTiOpolycrystalline relaxor thin films as a function of temperature. Apart from the low temperature frequency dispersion in dielectric data, a frequency independent local maxima in dielectric constant and a concomitant peak in dielectric loss at* ∼ 245 K is observed, which is unusual of bulk relaxor systems. Below*, dispersion in dielectric constant becomes quite evident showing signatures of non-ergodic behavior.

Lattice assisted dielectric relaxation in four-layer Aurivillius BiFeTiOceramic at low temperatures.

We have investigated magnetic, structural and dielectric properties of BiFeTiO(BFTO) in the temperature range 5K-300 K. Using diffraction, Raman spectroscopy and x-ray absorption fine structure measurements, iso-structural modifications are observed at low temperatures (≈100 K). The analysis of dielectric constant data revealed signatures of dielectric relaxation, concomitant with these structural modifications in BFTO at the same temperatures.

Unconventional domain wall magnetoresistance of patterned Ni/Nb bilayer structures below superconducting transition temperature of Nb.

Scattering of spin-up and spin-down electrons while passing through a ferromagnetic domain wall (DW) leads to an additional resistance for transport current, usually observed prominently in constricted magnetic structures. In this report we use the resistance of the DW as a probe to find an indirect signatures of the theoretically predicted spin-singlet supercurrent to spin-triplet supercurrent conversion effect of ferromagnetic DWs. Here we examine the DW induced resistance in Ni stripe in a bilayer Ni/Nb geometry in the normal state and in the superconducting state of Nb.

Studying the onset of galvanic steel corrosionusing thin films: film preparation, characterization and application to pitting.

This work reports about a novel approach for investigating surface processes during the early stages of galvanic corrosion of stainless steelby employing ultra-thin films and synchrotron x-radiation. Characterized by x-ray techniques and voltammetry, such films, sputter deposited from austenitic steel, were found representing useful replicas of the target material. Typical for stainless steel, the surface consists of a passivation layer of Fe- and Cr-oxides, a couple of nm thick, that is depleted of Ni.

An evidence of local structural disorder across spin-reorientation transition in DyFeO: an extended x-ray absorption fine structure (EXAFS) study.

The present work is aimed at exploring the local atomic structure modifications related to the spin reorientation transition (SRT) in DyFeO orthoferrite exploiting x-ray absorption fine structure (XAFS) spectroscopy. For this purpose we studied by XAFS the evolution of the local atomic structure around Fe and Dy as function of temperature (10-300 K) in a DyFeO sample having the SRT around 50-100 K. For sake of comparison we studied a YFeO sample having no SRT.

Relationship between Obesity and Periodontal Diseases in Saudi Women (Asir Region): A Prospective Study.

Aim: The present study is undertaken to assess any possible association between obesity and periodontal diseases among Saudi women in Asir region.

Materials And Methods: A total number of 100 obese subjects in the age group between 16 and 35 years participated in the study. A questionnaire which consisted of anthropometric measurements [neck circumference (NC) ≥ 34 cm for women] and demographic features was used.

Antiphase boundary in antiferromagnetic multiferroic LuMnFeO: anomalous ferromagnetism, exchange bias effect and large vertical hysteretic shift.

The emergence of exchange bias effect in FeO thin films has been since attributed to the presence of anti phase boundary (APB) growth defects despite lack of direct experimental evidence. In the present report, APB induced anomalous weak ferromagnetism and exchange bias property of single-phase antiferromagnetic (AFM) system LuMnFeO (LMFO) is discussed and Fe Mössbauer spectroscopy and high resolution transmission electron microscopy (HRTEM) measurements are used to probe the origin of the observed effect. In addition to the sextet component corresponding to the long range AFM ordering, the measured Mössbauer spectra reveal the presence of a small component (10%-12%) near zero velocity with unusually small internal field.

PrFeCrO: A Type I Multiferroic.

We synthesized double perovskite PrFeCrO by solid-state method. Analysis of its X-ray powder diffraction shows that the compound crystallizes in a centrosymmetric structure with space group Pbnm. Our X-ray photoelectron spectroscopy (XPS) studies show that all the cations are present in +3 oxidation state.

Thermoreversible gel for intrapocket delivery of green tea catechin as a local drug delivery system: An original research.

The periodontal therapies along with systemic antibiotic therapy aim at eliminating the subgingival microbiota to arrest the progression of periodontal diseases. The complete elimination is often difficult, and thus the probability of repopulation after periodontal therapy is also high. The objectives of the study are to develop thermoreversible gelling system of green tea catechins suitable for periodontal pocket administration, which would act as an adjunct to mechanical periodontal therapy.

Metastasis of lung adenocarcinoma to the gingiva: a rare case report.

Metastatic tumors account for 1% of all oral malignancies. Metastasis to jaw bones is common, particularly in the mandible, rare in the oral soft tissues, and account for only 0.1% of oral malignancies.

57Fe Mössbauer studies across the spin density wave transition in BaFe2-xRuxAs2.

Mössbauer measurements have been carried out in powdered single crystalline samples of BaFe(2-x)RuxAs(2), for Ru concentration in the x = 0.0-0.5 range.

Management of Recurrent Post-partum Pregnancy Tumor with Localized Chronic Periodontitis.

Pregnancy tumor is a benign, hyperplastic lesion of the gingiva, considered to be reactive or traumatic rather than neoplastic in nature. The term pyogenic granuloma is a misnomer as it is not filled with pus or granulomatous tissue histologically. It is multi factorial in nature, which shows an exaggerated response to stimuli such as low grade or chronic irritation, trauma or hormonal variations.

Internal nasal valve and its significance.

Unlabelled: Internal nasal valve (INV) is the narrowest area, of the nose where turbulence of the inspiratory and expiratory current takes place. This study analysis the significance of INV with respect to health and disease.

Study Design: Descriptive study/Prospective study.

Rhinolithiasis due to supernumerary ectopic tooth: very rare case.

An ectopic supernumerary tooth causing the formation of rhinolith was never reported before in the medical literature. A 30 years old male patient presented to our hospital with one sided nasal obstruction, recurrent epistaxis, and nasal discharge. Anterior rhinoscopy, nasal endoscopy and X-ray paranasal sinuses revealed a rhinolith in the left nasal cavity.

Low temperature high magnetic field 57Fe Mössbauer study of kinetic arrest in Ta doped HfFe2.

Low temperature high magnetic field (57)Fe Mössbauer measurements were carried out on the inter-metallic compound Hf0.77Ta0.23Fe2 by following novel paths in H-T space.

Role of collagen impregnated with dexamethasone and placentrix in patients with oral submucous fibrosis.

Purpose: To evaluate the versatility of the collagen membrane as both drug carrier and biologic dressing material to cover the raw wounds created after the surgical excision of fibrotic bands in oral submucous fibrosis.

Materials And Methods: The study comprises of ten patients. The patients of age group 20 to 50 years were selected.

Magnetic and 57Fe Mössbauer study of magneto-electric GaFeO3 prepared by the sol-gel route.

This work reports the preparation of magneto-electric GaFeO(3) by the sol-gel route and its characterization by x-ray diffraction, dc-magnetization, ac-susceptibility, low temperature and high field (57)Fe Mössbauer spectroscopy and dielectric constant measurements. The prepared samples are found to be single phase from x-ray diffraction studies. The crystallite sizes are found to be in the nano-regime for the samples sintered at low temperatures.

A review of C-reactive protein: A diagnostic indicator in periodontal medicine.

Periodontitis is a local inflammatory process mediating the destruction of periodontal tissues, triggered by bacterial insult. Recent evidence suggests the presence of chronic inflammatory periodontal disease may significantly affect systemic health conditions such as coronary heart disease, stroke, or adverse pregnancy outcome. C-reactive protein (CRP) is an acute phase protein which reflects a measure of the acute phase response.