Publications by authors named "Nagarajan S"

This study investigates the effects of silver nanoparticles (Ag NPs), biogenic silver nanoparticles derived from Rhizopus spp. (R.Ag NPs), and Rhizopus (R) elicitors on the yield and bioactive compounds of turmeric (Curcuma longa) using foliar spray and rhizome dipping techniques.

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  • Hard tick exoskeletons make DNA extraction difficult, prompting researchers to test a modified method for extracting DNA from ethanol-preserved ticks for genetic studies.
  • The new method was compared to three commercial kits and showed similar DNA concentration and purity across different life stages of ticks.
  • The extracted DNA was used for PCR amplification of phylogenetic markers to analyze Amblyomma integrum, a potential disease vector, demonstrating a cost-effective approach that can aid genetic research in low-resource settings.
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electroencephalography (EEG) and magnetoencephalography (MEG) are widely used non-invasive techniques in clinical and cognitive neuroscience. However, low spatial resolution measurements, partial brain coverage by some sensor arrays, as well as noisy sensors could result in distorted sensor topographies resulting in inaccurate reconstructions of underlying brain dynamics. Solving these problems has been a challenging task.

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Purpose: To compare corneal endothelial loss in manual small incision cataract surgery (MSICS) following three different techniques of nucleus delivery (Viscoexpression, Irrigating Vectis, Phacosandwich).

Setting: Mahatma Gandhi Medical College and Research Institute, Puducherry, India.

Design: Prospective, single blinded, randomized controlled trial.

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This study investigates the biodegradation of methyl parathion, an organophosphate pesticide used in paddy fields. Microbial degradation transforms toxic pesticides into less harmful compounds, influenced by the microbial community in the soil. To isolate different microbial colonies, soil samples from an organophosphorus-treated groundnut field were plated on nutrient agar and MSM with 1% glucose and 0.

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Colorectal cancer remains a global health challenge, prompting the exploration of natural compounds for treatment. shows promise as a source of activity biomolecules. This study analyzed the dynamics, molecular docking and ADMET properties of the extract, highlighting interaction with inflammatory protein.

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Based on historic observations that children with reading disabilities were disproportionately both male and non-right-handed, and that early life insults of the left hemisphere were more frequent in boys and non-right-handed children, it was proposed that early focal neuronal injury disrupts typical patterns of motor hand and language dominance and in the process produces developmental dyslexia. To date, these theories remain controversial. We revisited these earliest theories in a contemporary manner, investigating demographics associated with reading disability, and in a subgroup with and without reading disability, compared structural imaging as well as patterns of activity during tasks of verb generation and non-word repetition using magnetoencephalography source imaging.

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A novel series of D-bridge-A type organic small molecules has been designed, synthesized, and evaluated for non-volatile resistive switching write-once read-many (WORM) memory application. This study explores structure-property relationships by coupling electron-deficient malononitrile units with donors such as dibenzofuran, dibenzothiophene, and triphenylamine. Photophysical investigations revealed significant intramolecular charge transfer interaction, while electrochemical analyses demonstrated optimal band gaps ranging from 2.

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The present study describes the isolation and separation of isogarcinol and garcinol from kokum fruit by flash chromatography using water (containing 0.1 % formic acid) and methanol mixed with acetonitrile (1:1) with UV detection at 254 nm and was characterised by HR-MS and NMR studies. These were further subjected to antimicrobial studies on Staphylococcus aureus FR1722 and Listeria monocytogenes Scott A by agar diffusion assay and broth microdilution method wherein the MIC (Minimum Inhibitory Concentration) of garcinol and isogarcinol were, 20 μg/mL and 50 μg/mL for S.

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Therapeutic deep eutectic solvents (THEDES) are a type of deep eutectics that can be used as active pharmaceutical ingredients (APIs) by enhancing the drug bioavailability, by increasing the solubility of APIs in aqueous solutions or by increasing their permeability through biological barriers. In this study, we demonstrate the utility of designer THEDES, based on Quillaja Saponin (SAP), a triterpene natural product to unravel the antimicrobial potential of such THEDES. THEDES were prepared by gently mixing and heating five different α- hydroxy acids- malic, citric, tartaric, glycolic, lactic acids and SAP with water as a third component in the THEDES.

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  • The study aimed to explore the agreement between intraocular pressure (IOP) measured with a scleral Schiotz tonometer and the more commonly used Goldmann applanation tonometer (GAT).
  • It involved 155 patients, measuring IOP through both methods, and analyzed factors like age and central corneal thickness to see their impact on IOP readings.
  • Results indicated that the scleral measurements aligned well with GAT values, suggesting that scleral tonometry could serve as a reliable alternative for measuring IOP in clinical settings.
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A hallmark feature of pancreatic ductal adenocarcinoma (PDAC) is massive intratumoral fibrosis, designated as desmoplasia. Desmoplasia is characterized by the expansion of cancer-associated fibroblasts (CAFs) and a massive increase in extracellular matrix (ECM). During fibrogenesis, distinct genes become reactivated specifically in fibroblasts, e.

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  • New alkoxyphenanthrenes with unique structures were created for efficient organic field-effect transistors, boasting options for high-performance electron and hole transport.* ! -
  • The presence of sulfur and nitrogen in these molecules enhances their optical and electrical properties, promoting better packing and molecular interactions for improved conductivity.* ! -
  • Devices made with these compounds showed impressive mobility rates for both electron and hole transport, with significant findings on how molecular structure influences charge transfer efficiency through advanced computational methods.* !
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A successful efference copy self-prediction suppresses auditory signals in the primary auditory cortex (A1) is necessary for speakers to successfully compare auditory feedback during speech production with auditory feedback during passive listening, this is called speaker-induced suppression (SIS). The top-rank positive symptom in schizophrenic (SZ) patients, auditory verbal hallucination, for instance, is hypothesized to relate to failure to distinguish the internal voice and external sounds, and this deficit is thought to be associated with impaired self-prediction in comparing external and self-generated contents. In this magnetoencephalographic imaging (MEGI) study, we compared SIS M100 in the primary auditory cortex (A1) between the healthy controls (HC; N = 30) and SZ patients (N = 22).

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Poly(p-dioxanone) (PPDO) is crystallized with amorphous poly(p-vinyl phenol) (PVPh) and tannic acid (TA) as co-diluents to regulate and induce dendritic-ringed PPDO spherulites, with spoke- or sector-bands, aiming for convenience of analyses on interior lamellar assembly. Morphologies and interior lamellar arrangement leading to the peculiar rings on individual dendrites are evaluated by using polarized-light microscopy (PLM) and scanning electron microscope (SEM). Combinatory microbeam small-/wide-angle X-ray scattering (SAXS/WAXS) analyses further confirm the unique assembly patterns in periodic cycles.

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Background: American tackle football is associated with high rates of concussion, leading to neurophysiological disturbances and debilitating clinical symptoms. Previous investigations of the neurophysiological effects of concussion have largely ignored aperiodic neurophysiological activity, which is a marker of cortical excitability.

Purpose: We examined whether concussion during a season of high school football is related to changes in aperiodic and periodic neurophysiological activity and whether any such changes are associated with clinical outcomes.

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Researchers have highlighted gaps in the work readiness (WR) of allied health (AH) graduates and the capabilities required to successfully work in an interprofessional collaborative practice healthcare environment. In the studies conducted, the focus has generally been on one AH discipline or on one participant group across disciplines, such as new graduates. We explored WR capability of new AH graduates across three participant groups (managers, supervisors, and graduates) and across several AH disciplines in the health sector.

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  • Behavioral speech tasks help analyze speech control in both typical speakers and clinical groups, but it's tough to pinpoint specific neural differences just from behavioral data since multiple factors can cause similar effects.
  • This study applied computational modeling, specifically Bayesian inference, to compare the pitch control responses between individuals with cerebellar ataxia (CA) and typical speakers, revealing that CA speakers have a different weighting of auditory and sensory feedback and greater responsiveness to errors.
  • The findings provide insights into how CA impacts speech motor control and demonstrate the effectiveness of using Bayesian modeling to better understand complex speech behavior patterns for future research.
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Background & objectives Under-five mortality is high among the Scheduled Tribes (ST) in India compared with the general population. This study examined the association of different maternal, child, socio demographic, and household factors associated with under-five mortality among Scheduled Tribes in India. Methods Data from the National Family and Health Survey (NFHS)-5 (2019-2021) for the ST, across all Indian States and Union Territories were used for analyses.

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  • - Pharyngocutaneous fistula (PCF) is a frequent complication after laryngectomy, leading to extended hospital stays and delays in further treatment, with recent studies highlighting the need for better identification of at-risk patients.
  • - A review of 72 patients who had laryngectomy from 2013 to 2022 found a 23% incidence of PCF, with notable risk factors being low pre-operative albumin and advanced cancer stage; particularly, salvage laryngectomy patients experienced higher rates (32%) compared to upfront cases (16%).
  • - Management strategies showed that 64% of PCF cases were treated conservatively, with 80% of upfront laryngectomy cases successfully managed this way, while
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Objective: Fasting hyperglycemia and hypertriglyceridemia are characteristic of insulin resistance (IR) and rodent work has suggested this may be due to selective hepatic IR, defined by increased hepatic gluconeogenesis and de novo lipogenesis (DNL), but this has not been shown in humans.

Design: Cross-sectional study in men and women across a range of adiposity.

Methods: Medication-free participants (n = 177) were classified as normoinsulinemic (NI) or hyperinsulinemic (HI) and as having low (LF) or high (HF) liver fat content measured by magnetic resonance spectroscopy.

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  • * Radiographical investigations identified salivary calculi (stones) in the duct of the gland, leading to a diagnosis of obstructive chronic bacterial sialadenitis.
  • * The condition was successfully treated surgically after a course of antibiotics, with multiple stones removed, resulting in complete healing within two weeks and highlighting the significance of conventional imaging for early diagnosis.
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  • * The review explores allergen immunotherapy (AIT) as the only disease-modifying treatment for IgE-mediated allergic diseases, detailing its two main forms: subcutaneous immunotherapy (SCIT) and sublingual immunotherapy (SLIT).
  • * AIT has been shown to effectively alleviate AC symptoms, reduce medication needs, and enhance quality of life, with SLIT noted for its better safety profile and overall long-term benefits.
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Prcis: We quantified and compared the gaze metrics during target-oriented visual search tasks between glaucoma and healthy controls. On the basis of a mathematical concept we showed that due to glaucoma, focal search becomes prominent over global search.

Purpose: Visual search (VS) which is essential for target identification and navigation is significantly impacted by glaucoma.

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