Publications by authors named "Pramanik S"

Two π-radical complexes containing bisazo-aromatic-centered radical anion (1•-) were synthesized through in-situ electron transfer from metal-to-ligand using [IrI] and 2-(2-Pyridylazo)azobenzene (1) in inert hydrocarbon solvent. These are characterized as diradical [IrIII(1•-)2]+[2]+ and monoradical [IrIII(1•-)Cl2(PPh3)] 3. In contrast, a rare metal-mediated hydrolytic cleavage of the C(sp2)-N bond occurred in protic solvent resulting in quaternary radical complex [IrIII(1•-)(1')(PPh3)]+(4)+.

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Introduction: Arteriovenous (AV) fistula creation is the most common surgical procedure for providing vascular access for haemodialysis in patients with chronic kidney disease (CKD). The functioning of fistula dictates the quality of dialysis and the longevity of patients. The most common circumstances that require surgical takedown of AV fistula are thrombosis and rupture.

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The incorporation of a selenoimidazolium-based chalcogen bond (ChB) donor into a bis-heteroleptic Ru(II) complex (Ru-Se) has been designed for the first time to explore its anion-sensing properties and understand its selectivity to specific classes of anions. Photophysical studies demonstrate the receptor's selectivity toward phosphates, while H NMR displays its ability to recognize both I and HPO among the different halides and oxoanions through ChB interaction in CHCN and dimethyl sulfoxide- solvents, respectively. Additionally, microscopic studies such as DLS and TEM reveal that the selective turn-on sensing of HPO and HPO compared to I is driven by supramolecular aggregation behavior.

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AS3MT, GSTO2, and GSTP1 genes play important roles in the arsenic biotransformation pathway, while CYP2E1 gene has a prominent role in the metabolic activation of xenobiotics. Hence, polymorphisms of these genes might have an effect on arsenic biotransformation and could impact susceptibility to arsenical skin lesions in individuals of chronic arsenic toxicity. The present case-control study, comprising 148 subjects, attempted to evaluate genetic association between nine polymorphisms of AS3MT, GSTO2, GSTP1 and CYP2E1 genes and arsenical skin lesions in a West Bengal (WB) population.

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Nanotechnology has emerged as a revolutionary domain with diverse applications in medicine, and one of the noteworthy developments is the exploration of bacterial magnetosomes acquired from magnetotactic bacteria (MTB) for therapeutic purposes. The demand for natural nanomaterials in the biomedical field is continuously increasing due to their biocompatibility and eco-friendly nature. MTB produces uniform, well-ordered magnetic nanoparticles inside the magnetosomes, drawing attention due to their unique and remarkable features.

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This study aims to investigate the in vitro antiproliferative and pro-apoptotic/apoptotic potential of active constituents of essential oils on two cancer cell lines; namely, breast adenocarcinoma (MCF-7) and urinary bladder cancer (T24). Essential oils active constituents (EO-ACs) entail a spectrum of phytochemicals with widely demonstrated anticancer potential. We assessed the effects of eight essential oils active constituents on T24 and MCF-7 cell lines in both dose- (16-1024 µg/mL) and time-dependent manners.

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A 35-year-old male patient with acute myeloid leukemia (AML), with hyperleukocytosis, presented with acute myocardial infarction. The individual had acute onset chest pain and reached the hospital within the window period. His electrocardiogram (ECG) revealed ST elevated myocardial infarction (STEMI), ST elevated myocardial infarction, and thrombolysis was performed.

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Mass-fraction-optimized heterojunction composites featuring precisely engineered interfaces and mesoporous structures are crucial for improving light absorption, minimizing electron-hole recombination, and boosting overall catalytic efficiency. Herein, highly efficient mesoporous-NiFeO@g-CN heterojunctions were developed by embedding p-type NiFeO nanoparticles (NPs) within n-type porous ultrathin g-CN (p-uCN) nanosheets. The optimized NiFeO@g-CN, loaded with 20 wt % magnetic counterparts, exhibits exceptional photocatalytic methylene blue (MB) degradation, achieving the highest performance in both photocatalytic and photo-Fenton processes with rate constants of 0.

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The current investigation examined histopathological and serum biochemical profiles to assess the interactive effects of river Saraswati's impaired physicochemical regime and parasite infection by ectoparasites ( sp., sp.) and endoparasites ( sp.

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Endogenous DNA damage occurs throughout the cell cycle, with cells responding differently at various stages. The base excision repair (BER) pathway predominantly repairs damaged bases in the genome. While extensively studied in interphase cells, it is unknown if BER operates in mitosis and how apurinic/apyrimidinic (AP) sites, intermediates in the BER pathway that inhibit transcriptional elongation, are processed for post-mitotic gene reactivation.

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Transfer of chirality, or transmission of asymmetric information from one system to another, plays an essential role in fundamental biological and chemical processes and, therefore, is essential for life. This phenomenon also holds immense potential in spintronics in the context of chirality-induced spin selectivity (CISS). In the CISS, the spatial arrangement of chiral molecules influences the spin state of electrons during the charge-transfer processes.

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Engineering the surface of metal halide perovskite nanocrystals (MHPNCs) is crucial for optimizing their optical properties, repairing surface defects, enhancing quantum yield, and ensuring long-term stability. These enhancements make surface-engineered MHPNCs ideal for applications in light-emitting devices (LEDs), displays, lasers, and photodetectors, contributing to energy efficiency. This article delves into an introduction to MHPNCs, their structure and types, particularly the ABX type (where A represents monovalent organic/inorganic cations, B represents divalent metal ions mainly Pb metal, and X represents halide ions), synthesis methods, unique optical properties, surface modification techniques using various agents (particularly inorganic molecules/materials, organic molecules, polymers, and biomolecules) to tune optical properties and applications in the aforementioned light-emitting technologies, challenges and opportunities, including advantages and disadvantages of surface-modified APbX MHPNCs, and a summary and future outlook.

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Article Synopsis
  • - Concerns about the misuse of advanced explosives like TKX-50 emphasize the need for better detection techniques to ensure safety and security.
  • - A new polymeric receptor has been developed that exhibits a 'luminescence ON' response when it binds with TKX-50, indicating its potential for efficient explosive detection.
  • - This receptor's detection capability can be integrated into a user-friendly IoT device for real-time monitoring of TKX-50, making it a valuable tool for remote surveillance.
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Background: Psychotherapists, while treating clients with a history of traumatic experiences, are exposed to vicarious trauma, which affects their mental health as well as their quality of caregiving. The present research tries to gain an insight into the lived experiences of psychotherapists while treating clients with traumatic experiences.

Methods: In-depth individual interviews were conducted with five psychotherapists (two males and three females) with a minimum duration of continuous professional practice of 3.

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This study explores the synthesis, structural characterization, and examination of two nickel(II) complexes, [Ni( )](NO) (complex ) and [Ni( )](ClO) (complex ), using the newly synthesized organic heterocyclic chelating ligand [4-imidazole-2,6-di(pyrazinyl)pyridine]. Through single-crystal X-ray diffraction, we have detailed the crystal structures of these complexes, highlighting their distorted octahedral geometries and diverse supramolecular interactions including π···π stacking, anion···π, and hydrogen bonding. These interactions crucially influence the formation of distinct one- and two-dimensional supramolecular architectures.

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  • - Rickets is a condition leading to bony deformities and short stature, which can be caused by a deficiency in calcium (calciopenic) or phosphorus (phosphopenic), making early diagnosis and treatment very important.
  • - A consensus from the Endocrine Society of Bengal aims to simplify the diagnostic approach for rickets, particularly in low-resource settings, and involved extensive discussions, literature review, and agreement by a committee of 29 members.
  • - Key diagnostic steps include examining skeletal deformities, conducting specific blood tests, and utilizing radiographic imaging to confirm rickets, with additional tests recommended for unusual cases or metabolic complications.
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Scrub typhus presenting as infective endocarditis of the mitral valve is rare. There are few reports of infective endocarditis by scrub typhus with just one previous report of involvement of the aortic valve. An 18-year-old woman presented with prolonged fever for 1 month.

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  • * A new class of ionic liquids containing unique carbanion structures is utilized to enable the successive binding of two CO molecules through specific chemical bond formations, improving utilization of active sites.
  • * Experimental techniques like spectroscopy and computational chemistry validate the findings, emphasizing that optimizing the molecular structure can significantly enhance CO capture performance while minimizing energy requirements for sorbent regeneration.
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  • This manuscript introduces a novel method for scalar-on-distribution regression, where subject-specific distributions serve as covariates to predict a single outcome, bypassing the need for prior estimation of these distributions.
  • The proposed approach uses observed repeated measures directly as covariates and applies a Gaussian process prior, achieving efficient Bayesian inference without needing intermediate density estimates.
  • The method shows superior performance in simulation studies compared to traditional regression that requires estimating densities first, especially when there are limited repeated measures per subject, and it also accommodates various forms of data dependencies.
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  • - Wound management involves various techniques and materials to help heal both acute and chronic wounds, focusing on successful wound closure and preparing for surgical options when necessary.
  • - Dressings should promote healing while reducing fluid loss, pain, and infection; nanotechnology has been a game-changer by enhancing dressings with better strength and targeted drug delivery.
  • - Recent innovations like smart materials and personalized therapeutics are advancing wound care, aiming to improve healing speed and reduce scarring, ultimately shifting towards a patient-centered approach.
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The resurgence of interest in sodium-ion batteries (SIBs) is largely driven by their natural abundance and favourable cost, apart from their comparable electrochemical performance when compared with lithium-ion batteries (LIBs). The uneven geographic distribution of the raw materials required for LIBs has also contributed to this. The solid-state electrolyte (SSE) is typically one of the vital components for energy storage in SIBs and for achieving high electrochemical performances.

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Synthesis of various polycyclic aromatic hydrocarbons (PAHs) from a palladium-catalyzed [3 + 2] cyclocondensation reaction is reported herein. The design strategy consisted of reacting the sterically hindered 1,2-bis(3,5-di-butylphenyl)acetylene with myriad brominated anthracene and pyrene surrogates, resulting in the formation of target molecules and , which exhibited excellent solubility in commonly used organic solvents and unveiled prominent aggregation-induced emission (AIE) characteristics in tetrahydrofuran and water solvent mixtures. Calculations using density functional theory (DFT) were utilized to validate both the contorted structures of the target molecules and their electronic conjugation featuring HOMO-LUMO band gaps (Δ) in the range of ∼2.

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  • The study investigates the use of LiNbO, a perovskite ferroelectric material, in creating a new type of thin-film transistor (FeTFT) that can mimic synaptic behavior in neuromorphic devices.
  • The FeTFT is constructed with layers of LiNbO and LiAlO, enhancing its performance by reducing depolarization fields and leakage current, leading to impressive device metrics such as high mobility and good memory retention.
  • The FeTFT not only demonstrates effective emulation of synaptic plasticity but also achieves successful results in artificial neural network training while maintaining low energy consumption.
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Six organotin(IV) complexes, viz., [MeSn(L)] (1), [n-BuSn(L)] (2), [n-OctSn(L)] (3), [BzSn(L)]·0.5CH (4), [n-BuSn(L)Cl] (5), and [PhSn(L)Cl] (6), were synthesized using a 2,6-diacetylpyridine bis(2-hydroxybenzoylhydrazone), HL.

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Background And Objective: Various materials like MTA, Biodentine etc have been used for the regeneration of lost dental tissues. Still, the quest for newer materials to enhance the bioactivity of the existing materials continues. Hence this study aims at the evaluation of bioactivity of MTA Plus when conjugated with Chitosan in phosphate buffer saline.

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