Bright and persistent green emitting MgGaO:Mn for phosphor converted white light emitting diodes.

Narrow band green emitting phosphors have gained widespread attention due to their application in white light emitting diode (wLED) backlight displays. Commercial backlight displays have a broad band green phosphor which limits their performance. In this work, bright, narrow and thermally stable green emitting MgGaO:Mn (MGO-Mn) has been synthesized.

Oxygen vacancy-enriched ZnSnO for aliphatic alcohol sensing and enhanced selectivity towards -butanol.

The sensitive detection of toxic flammable volatile organics using low cost efficient sensors is important for ensuring both indoor and outdoor safety. It is essential for chemical sensors to exhibit a significantly stronger response to target analytes compared to equivalent amounts of analogous competing chemicals. In line with this importance, current work evaluated the performance of ZnSnO, a n-type semiconducting metal oxide, for sensing -butanol in comparison to methanol, ethanol, and propanol vapours.

Structural, optical, and thermoluminescence characterizations of 1 mol% Dyion-activated Fluro Boro-phosphate glass for photonic devices.

A novel Fluro boro-phosphate host matrix doped with the 1 mol% of Dy ions (50BO + 20PO + 10TiO + 10SrCO + 4BaF + 5BaCO + 1DyO) was prepared using a conventional melt-quenching mechanism, and its structural characteristics were explored through the Powder-XRD, FT-IR, FT-Raman, EDAX and SEM spectroscopic analysis. The XRD spectrum of the glass confirmed its non-crystalline or amorphous structure. FT-IR and FT-Raman spectrum studies revealed that various borate and phosphate groups present with a variety of stretching and bending vibrations.

ZnGaAlO ( = 0 ≤ 2) spinel for persistent light emission and HER/OER bi-functional catalysis.

Spinel materials have demonstrated diverse applications in various fields, especially in the energy sector. Since the pure spinel structure has the limitations of poor inherent activity and low conductivity, defect engineering through octahedral B-site modulation is expected to enhance various properties. Here in this work, we have synthesized ZnGaAlO ( = 0 ≤ 2) spinel and moved from one terminal (ZnGaO) to the other (ZnAlO) by varying the Ga/Al ratio using solvent-free solid-state reaction.

Concerted effect of Ni-in and S-out on ReS nanostructures towards high-efficiency oxygen evolution reaction.

Herein, a one-step hydrothermal reaction is developed to synthesize a Ni-doped ReS nanostructure with sulphur defects. The material exhibited excellent OER activity with a current density of 10 mA cm at an overpotential of 270 mV, a low Tafel slope of 31 mV dec, and good long-term durability of 10 h in 1 M KOH. It shows high faradaic efficiency of 96%, benefiting from the rapid charge transfer caused by the concerted effect of Ni-in and S-out on the ReS nanostructure.

Effects of Ce/Dy and Ce/Sm co-doping as a luminescent modifier in alumina-borophosphate glasses for w-LED application.

Ce/Dy and Ce/Sm co-doped alumino-borophosphate glasses (CDABP/ CSABP) were prepared and characterized for luminescence and SHG efficiency properties. FT-IR and FT-Raman spectra have been utilized to identify different functional groups of Phosphate networks. Various optical properties such as, optical absorption, optical band gap energy (E), Urbach energy (ΔE) and linear refractive index (n) of the glasses were determined using UV-Vis spectrometer in the spectral range 200-1200 nm.

Haptoglobin Genotypes Associated with Vaso-Occlusive Crisis in Sickle Cell Anemia Patients of Eastern India.

Sickle cell anemia is hallmarked by hemolysis, which releases hemoglobin (Hb) into the plasma promoting vaso-occlusive crisis (VOC). Haptoglobin (Hp) clears free Hb and decreases Hb-related pathophysiology in sickle cell anemia. There are two alleles (HP1 and HP2) and three genotypes (HP1-1, HP1-2 and HP2-2) of Hp with different frequencies in different populations.

Self-Activated Green-Yellow Emitting Gd₂CaZnO Phosphor for Efficient Ultra-Violet Light-Emitting Diodes.

A new self-activated green-yellow emitting Gd₂CaZnO (GCZO) phosphor was synthesized using solid-state reaction method at high-temperature. XRD analysis confirmed the orthorhombic structure of the sample with the Pbnm space group. SEM micrographs reveal the irregular morphology with micron sized particles.

Structural, photoluminescence and dielectric investigations of phosphatic shale.

In the current study, the structural and spectroscopic properties of phosphatic shale samples obtained from the Atomic Minerals Directorate for Exploration and Research were probed for potential use as a phosphor material. X-ray diffraction and Raman and Fourier transform infrared spectroscopy revealed that the beneficiated phosphatic shale samples were primarily monophasic consisting of fluorapatite [Ca (PO ) F, (FAP)] with minor traces of haematite (α-Fe O ) and calcite (CaCO ). Energy dispersive X-ray fluorescence revealed the presence of U, Eu, Dy and Tb in the FAP matrix substituted at Ca(I) and Ca(II) sites of FAP.

Urinary bile casts in bile cast nephropathy secondary to severe falciparum malaria.

Background: Severe cholestatic jaundice may complicate with bile cast nephropathy (BCN) causing severe acute kidney injury (AKI). In this study, we investigate BCN in severe falciparum malaria complicated with jaundice and AKI.

Methods: This prospective study was conducted in a tertiary health care institution with high prevalence of malaria.

Longevity of animals under reactive oxygen species stress and disease susceptibility due to global warming.

The world is projected to experience an approximate doubling of atmospheric CO2 concentration in the next decades. Rise in atmospheric CO2 level as one of the most important reasons is expected to contribute to raise the mean global temperature 1.4 °C-5.

Genetic predisposition of variants in TLR2 and its co-receptors to severe malaria in Odisha, India.

Although the role of TLRs signalling in malaria pathogenesis is well established, contribution of individual TLR to clinical outcome of malaria still remains inconclusive. Given the importance of TLR2 and its co-receptors in recognising distinct structural forms of key malaria toxins and mediating innate immune response, it is essential to delineate their genetic contribution. Variants in TLR1 (I602S) and TLR6 (P249S) were genotyped by PCR-RFLP methods, and TLR2 (I/D) was genotyped by PCR in 200 samples each from uncomplicated malaria (UM) and severe malaria (SM).

Influence of common variants of TLR4 and TLR9 on clinical outcomes of Plasmodium falciparum malaria in Odisha, India.

Background: In malaria, the toll-like receptors (TLRs) have recently emerged as major player of innate immunity. However, implication of TLR variants on clinical manifestations of malaria is conflicting. The present study aims to provide relevant information of growing interest in understanding the role of TLR4D299G, TLR9T-1237C and TLR9T-1486C polymorphisms on clinical outcomes of malaria.

A remarkable enhancement in Am³⁺/Eu³⁺ selectivity by an ionic liquid based solvent containing bis-1,2,4-triazinyl pyridine derivatives: DFT validation of experimental results.

Mutual separation of trivalent actinide (An(3+)) and lanthanide (Ln(3+)) using several soft (N) donor ligands (bis(5,6-dialkyl-1,2,4-triazinyl)pyridine (R-BTP)) is attempted for the first time in room temperature ionic liquid (RTIL) medium. The results indicate a spectacular enhancement in the selectivity as compared to that in molecular diluents with a separation factor (S.F.

Aldosterone synthase C-344T, angiotensin II type 1 receptor A1166C and 11-β hydroxysteroid dehydrogenase G534A gene polymorphisms and essential hypertension in the population of Odisha, India.

Essential hypertension which accounts 90-95% of the total hypertension cases is affected by both genetic and environmental factors. This study was undertaken to investigate the association of aldosterone synthase C-344T, angiotensin II type I receptor A1166C and 11- hydroxysteroid dehydrogenase type 2 G534A polymorphisms with essential hypertension in the population of Odisha, India. A total of 246 hypertensive subjects (males, 159; females, 87) and 274 normal healthy individuals (males, 158; females, 116) were enrolled in this study based on the inclusion and exclusion criteria.

Complexation of trivalent americium and lanthanides with terdentate 'N' donor ligands: the role of rigidity in the ligand structure.

A systematic study on the Ln(3+) complexation behaviour with two terdentate 'N' donor ligands of varying structural rigidity, viz. 5,6-dimethyl-(1,2,4)-triazinylbipyridine (Me2TBipy) and 5,6-dimethyl-(1,2,4)-triazinylphenanthroline (Me2TPhen), is performed in the present work by UV-Vis spectrophotometry, time resolved fluorescence spectroscopy (TRFS) and electrospray ionization mass spectrometric (ESI-MS) studies. These studies indicate the formation of a 1 : 1 complex of La(3+), 1 : 2 complexes of Eu(3+) and Er(3+) with both the ligands.

Procalcitonin as a biomarker of bacterial infection in sickle cell vaso-occlusive crisis.

Sickle cell anaemia (SCA) patients with vaso-occlusive crisis (VOC) have signs of inflammation and it is often difficult to diagnose a bacterial infection in them. This study was undertaken to evaluate the role of serum procalcitonin (PCT) as a biomarker of bacterial infection in acute sickle cell vaso-occlusive crisis. Hundred homozygous SCA patients were studied at Sickle Cell Clinic and Molecular Biology Laboratory, V.

Association of angiotensin-converting enzyme and angiotensin-converting enzyme-2 gene polymorphisms with essential hypertension in the population of Odisha, India.

Background: Hypertension is a serious health issue worldwide and essential hypertension, which includes 90-95% of the cases, is influenced by both genetic and environmental factors. Identification of these factors may help in control of this disease. The Insertion/Deletion (I/D) polymorphism in Angiotensin-Converting Enzyme (ACE) gene and rs2106809 (C > T) polymorphism in Angiotensin-Converting Enzyme 2 (ACE2) gene have been reported to be associated with essential hypertension in different populations.

Spectroscopic investigation on europium complexation with humic acid and its model compounds.

Time resolved fluorescence spectroscopy (TRFS) of Eu(III) (an analogue of trivalent actinides) complexation with humic acid (HA) and its model compounds, namely phthalic acid (PA), mandelic acid (MA) and succinic acid (SA) has been carried out at varying concentration ratios of ligand to metal ion. The emission spectra were recorded in the range of 550-650nm by exciting at an appropriate wavelength. The intensity of the 616nm peak of Eu(III) was found to be sensitive to complexation.

A double-blind, randomized study of azithromycin compared to chloroquine for the treatment of Plasmodium vivax malaria in India.

Azithromycin has demonstrated activity in a prevention of Plasmodium vivax infection, but no controlled treatment studies have been performed. We conducted a double-blinded trial in P. vivax malaria in which patients were randomized to either azithromycin 1,000 mg q.

A multicenter study of azithromycin, alone and in combination with chloroquine, for the treatment of acute uncomplicated Plasmodium falciparum malaria in India.

Background: Azithromycin has demonstrated in vitro and in vivo activity against Plasmodium falciparum, but small treatment studies have given mixed results.

Methods: Participants with fever and with both a blood smear and a rapid diagnostic test positive for falciparum malaria were randomly assigned to groups that were treated with either azithromycin or chloroquine or to matched groups receiving a placebo. After an interim analysis, open-label combination therapy with both drugs was initiated.