Structural and Photoluminescent Investigation of Eu Doped Ca(PO)Cl Chloropatite Phosphor by Modified Pechini Method: Crystal Structure and Judd-ofelt Description of Radiative Properties.

The preparation of new phosphor with outstanding luminescent properties for white light-emitting diodes (WLEDs) is consistently a challenging. Here in the present study, A novel white-emitting chloropatite phosphor Ca(PO)Cl:Eu was synthesized via the pechini sol gel synthesis with citric acid and polyethylene glycol (PEG) acid as a fuel at 850 °C systematically investigating the impact of doping concentration and synthesis temperature on both photoluminescence properties and crystal phase. The structural characteristics and crystalline nature of the prepared sample were investigated by using X-ray diffraction (XRD) patterns and Fourier transform infrared (FT-IR) spectra.

Intense Blue Emission Energy Transfer Analysis in Ce-Eu Activated NaBa(PO) Phosphors for Blue LEDs and Plant Growth Technologies.

Phosphites are being recognized as the new emerging candidates for luminescence in the modern era. In the proposed research article, Ce/Eu co-activated NaBa(PO) phosphite phosphors synthesized utilizing sol-gel technique. Through the use of XRD and Rietveld refinement, the phase identity and crystal structure of produced phosphor are examined.

Highly Efficient Far-Red Emitting MgCaNa(PO): Ce, Eu Luminescent Glasses: A Novel Approach Towards Plant Cultivation Technologies.

One of the exciting developments in contemporary luminescence research is the development of rare earth triggered luminescent glasses, which are a type of lanthanide activated luminous material. For the first time, Ce, Eu activated/co-activated MgCaNa(PO) orthophosphate glasses have been synthesized using the proposed work's melt quenching technique. The proposed glass sample's XRD pattern has an amorphous character, although its most prominent peak matches data from the MgCaNa(PO) standard ICSD database.

Tailored efficient energy transfer Tb, Eu activated/co-activated LiAl(PO) phosphor by substitution of alkali metals: the effect of charge compensation.

Phosphites are the new emerging candidates in the field of luminescence in the modern era. In the present investigation, Tb/Eu activated/co-activated LiAl(PO) phosphor was prepared by a wet chemical method, and the effect of R (Na, K) ions on photoluminescence (PL) properties of these phosphors are investigated. Phase identification and crystal structure of the prepared phosphor were determined using XRD and Rietveld refinement, respectively.

Intensity enhancement of photoluminescence in Tb /Eu co-doped Ca Zn Al O phosphor for WLEDs.

This article focuses on the effect of monovalent cation doping on the optical properties of rare earth (RE = Eu , Tb ) co-doped Ca Zn Al O which has been synthesized by a low temperature combustion method. Crystalline phase of the Ca Zn Al O phosphor was examined and confirmed by X-ray diffraction measurement. Under near-ultraviolet light excitation Eu -doped Ca Zn Al O phosphor exhibit characterization of Eu emission bands that are located at a maximum wavelength (λ ) of approximately 470 nm and other peaks centred at 593 nm and 615 nm, respectively.

Luminescence investigation of Sm ,Eu -activated/co-activated Ba AlB O Cl phosphors: novel red to blue colour tuning in chloroborates.

Borochlorate phosphors have shown their worth in modern day lighting over the last few years. Colour tunability of the phosphor is a modern techniques used to obtain white-light-emitting diodes (WLEDs). In the proposed work, Sm ,Eu -activated/co-activated Ba AlB O Cl phosphors were investigated for WLED applications as well as display devices.

Combustion-assisted Ca Na Al O :Sm phosphors for solid-state lighting and WLED applications.

Aluminate-based phosphors have been the most investigated luminescent phosphors over decades due to their outstanding optical properties. In the proposed work, a series of Sm -doped Ca Na Al O (CNAO) phosphor sample was prepared using a simple combustion technique with the help of two fuels i.e.

Luminescence study of Sm ,Eu -doped Y Zr O host: optical investigation of greenish yellow to red colour tunable pyrochlore phosphor.

Pyrochlore phosphors have shown their worth in modern day lighting in the last few years. Colour tunability of the phosphor is one of the modern techniques used to obtain white light-emitting diodes (WLEDs). In the proposed work, Y Zr O :Sm ,Eu phosphors were investigated for WLED applications as well as display devices.

Randomized Trial of Metformin With Anti-Tuberculosis Drugs for Early Sputum Conversion in Adults With Pulmonary Tuberculosis.

Background: Metformin, by reducing intracellular Mycobacterium tuberculosis growth, can be considered an adjunctive therapy to anti-tuberculosis treatment (ATT). We determined whether metformin with standard ATT reduces time to sputum culture conversion and tissue inflammation in adults with pulmonary tuberculosis (PTB).

Methods: In a randomized, 8-week, clinical trial, newly diagnosed, culture-positive PTB patients were randomized to standard ATT (HREZ = control arm) or standard ATT plus daily 1000 mg metformin (MET-HREZ = Metformin with Rifampicin [METRIF] arm) for 8 weeks during 2018-2020 at 5 sites in India.

Tailoring of thermoluminescent properties and assessment of trapping parameters of natural fluorite samples from Dogargaon fluorite mines, India.

Mineral fluorite or fluorspar (CaF ) can host significant quantities of trivalent REE (rare earth element) by substitution with divalent Ca . The fluorites associated with carbonatites are often REE-rich compared to those derived from sedimentary, hydrothermal, or Mississippi Valley-type (MVT) fluorites. The naturally occurring fluorites have several industrial applications one of which is for luminescence.

Enhanced photoluminescence in RE (Eu , Ce and Sm )-activated Ca (PO )F phosphors by double or triple ionized mineral doping: a comparative study.

In this work, RE (Eu, Ce and Sm)-activated Ca (PO ) F (fluorapatite) phosphors were synthesized by doping with different apatite minerals (SO , VO WO ) using a solid-state diffusion method. Optical and structural characterizations were performed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy, and photoluminescence (PL) spectroscopy. XRD characterization showed the crystalline nature of the phosphor.

Investigation of thermoluminescence response and trapping parameters of natural barite samples from Dongargaon mine, India.

Dosimetry is a technique that quantitatively measures the ionizing radiation absorbed by matter. The present study was conducted on the barites from a mine at Dongargaon in Central India. Morphological and structural analysis of proposed sample was carried out using X-ray diffraction and standard error of the mean.

Experiential learnings from the Nipah virus outbreaks in Kerala towards containment of infectious public health emergencies in India.

Nipah virus (NiV) outbreak occurred in Kozhikode district, Kerala, India in 2018 with a case fatality rate of 91% (21/23). In 2019, a single case with full recovery occurred in Ernakulam district. We described the response and control measures by the Indian Council of Medical Research and Kerala State Government for the 2019 NiV outbreak.

Giant cell tumor with pathological fracture of C2 with C1-C2 instability: A rare case with review of literature.

Giant cell tumor (GCT) or osteoclastoma is a benign, locally aggressive tumor with a tendency to recur. Involvement of the axial skeleton is very rare and majority of them are seen in the sacrum. The authors report a rare case of a 19-year-old female who presented with a C2 dens GCT with a pathological fracture and atlantoaxial dislocation.

Can Posterior Lumbar Instrumentation and Fusion Be Overpowered by Anterior Lumbar Fusion With Hyperlordotic Cages? A Cadaveric Study.

Study Design: Technical report on cadavers.

Objective: To evaluate preliminary feasibility and safety of lumbar sagittal alignment correction with anterior hyperlordotic cages used to overpower previous posterior spinal instrumentation.

Methods: Hyperlordotic 30° anterior lumbar interbody fusion (ALIF) cages were inserted in collapsed L5-S1 disc space of 2 cadavers to overpower prior posterior L5-S1 pedicle screws and rod constructs.

Overpowering posterior lumbar instrumentation and fusion with hyperlordotic anterior lumbar interbody cages followed by posterior revision: a preliminary feasibility study.

OBJECTIVE The authors' aim in this study was to evaluate whether sagittal plane correction can be obtained from the front by overpowering previous posterior instrumentation and/or fusion with hyperlordotic anterior lumbar interbody fusion (ALIF) cages in patients undergoing revision surgery for degenerative spinal conditions and/or spinal deformities. METHODS The authors report their experience with the application of hyperlordotic cages at 36 lumbar levels for ALIFs in a series of 20 patients who underwent revision spinal surgery at a single institution. Included patients underwent staged front-back procedures: ALIFs with hyperlordotic cages (12°, 20°, and 30°) followed by removal of posterior instrumentation and reinstrumentation from the back.

Studies on Solubility Enhancement of Poorly Soluble NSAID Using Dual Approach of Micro-environmental pH Modulation and Melt Granulation.

Background: The present work describes the role of melt granulation and microenviron-mental pH modulation technique in solubility enhancement of a poorly water soluble NSAID, Aceclofenac (ACL). ACL is a BCS Class II drug showing dissolution rate limited absorption and pH dependent solubility, with higher solubility at alkaline pH. The limited solubility of ACL affects drug absorption and hence, therapeutic effect as the drug is indicated in conditions of pain where rapid onset of action is desired.

Bone substitutes and expanders in Spine Surgery: A review of their fusion efficacies.

Study Design: A narrative review of literature.

Objective: This manuscript intends to provide a review of clinically relevant bone substitutes and bone expanders for spinal surgery in terms of efficacy and associated clinical outcomes, as reported in contemporary spine literature.

Summary Of Background Data: Ever since the introduction of allograft as a substitute for autologous bone in spinal surgery, a sea of literature has surfaced, evaluating both established and newly emerging fusion alternatives.

Giant Cell Tumor of Talus: T-Construct Method of Bone Grafting.

Unlabelled: Giant cell tumor (GCT) or osteoclastoma is a benign, locally aggressive tumor with a tendency to recur. Giant cell tumors typically occur in the epiphysis of long bones, including the distal femur and proximal tibia. They are uncommonly found in the small bones of the foot or ankle, and involvement of talus is rare.

Anterior hyperlordotic cages: early experience and radiographic results.

OBJECTIVE The aim of this study was to evaluate the segmental correction obtained from 20° and 30° hyperlordotic cages (HLCs) used for anterior lumbar interbody fusion in staged anterior and posterior fusion in adults with degenerative spinal pathology and/or spinal deformities. METHODS The authors report a retrospective case series of 69 HLCs in 41 patients with adult degenerative spine disease and/or deformities who underwent staged anterior, followed by posterior, instrumentation and fusion. There were 29 females and 12 males with a mean age of 55 years (range 23-76 years).

Anterior lumbar spine surgery: a systematic review and meta-analysis of associated complications.

Background Context: The anterior approach to the lumbar spine is increasingly used to accomplish various surgical procedures. However, the incidence and risk factors for complications associated with anterior lumbar spine surgery (ALS) have not been fully elucidated.

Purpose: To identify and document types of complications and complication rates associated with ALS, determine risk factors for these events, and evaluate the effect of measures used to decrease complication rates.

Modified prone position using lateral brace attachments for cervico-dorsal spine surgeries.

Purpose: The purpose of the study was to propose a method of prone positioning for posterior cervico-dorsal spine surgeries that is easy to achieve without additional equipment and may reduce complications associated with prone positioning in patients.

Methods: 41 patients underwent posterior spine surgeries using our method of prone positioning on a fluoroscopy compatible conventional operation table, and the technical difficulties and complications associated were noted. After induction under general anaesthesia in supine position, cervical tongs were applied.