Graphene metamaterial (GMM) based dual mode, tunable, and broadband THz absorber with triple circular split ring structure.

In this study we investigated a novel approach to designing a graphene metamaterial (GMM) based terahertz (THz) absorber with dual-mode functionality, tunability, and broadband absorption capabilities. The study leverages the unique properties of graphene, a material known for its exceptional electronic and optical characteristics, combined with metamaterials to achieve efficient THz absorption. Here we performed extensive simulation on four different types of configurations and found the optimized structure has the highest bandwidth of 3.

Effect of Yoga in Pregnancy on Maternal Pelvic Floor Distress Symptoms-A Randomised Control Study.

Introduction And Hypothesis: Pregnancy is associated with an increase in pelvic floor dysfunction. Yoga, an ancient Indian practice involving asanas (physical postures), pranayam (breathing patterns) and meditation, can help women to control their pelvic floor muscles. However, the literature to support yoga as a remedy for pelvic floor dysfunction is lacking.

Activation of enamine by photoexcited organocatalyst assisted singlet oxygen: synthesis of oxazoles and quinoxalines.

Herein, a novel transition-metal-free thiol-based donor-acceptor organophotocatalyst-assisted, singlet-oxygen-mediated tandem oxidative cyclization for the synthesis of substituted oxazoles in moderate-to-good yields is described. The developed method demonstrates applicability for the synthesis of various substituted quinoxalines in good-to-excellent yields. The metal-free methodology shows a practical route for the synthesis of oxazole and quinoxaline derivatives, which are privileged moieties prevalent in various biologically active compounds and natural products.

Visible Light Driven Metal-Free Photoredox Catalyzed α-benzylation and α-oxygenation of N-substituted Tetrahydroisoquinolines: Applications to Synthesis of Natural Products.

Herein, visible light mediated organophoto redox catalysed simple and convenient method for the α-benzylation and α-oxygenation of tertiary amines is demonstrated. Synthesis of novel thiophenol based donor acceptor organophotoredox catalysts 4 a-4 d were investigated along with commercial catalyst 4-CzIPN (4 e). A diverse biologically active α-benzylated tetrahydroisoquinolines and natural products such as (±)-Norlaudanosine, (±)-laudanosine and (±)-xylopinine have been synthesized under the optimized conditions in yields ranging from from 62-91%.

Bio-sensing of organophosphorus pesticides: A review.

Organophosphorus (OP) pesticides have been used widely as agricultural and household pest control agents for almost five decades and persist in our water resources, fruits, vegetables and processed food as health and environmental hazardous compounds. Thus, detection of these harmful OP pesticides at an ease with high sensitivity and selectivity is the need of hour. Bio-sensing technology meet these requirements and has been employed at a large scale for detection.

Purification and Analytical Application of Vigna mungo Chitinase for Determination of Total Fungal Load of Stored Cereals.

A novel chitinase from urd bean (Vigna mungo) seeds was purified up to homogeneity and optimized with respect to its optimum working conditions of pH, temperature, and substrate concentration. Overall, 145-fold purification with 70% yield of the purified chitinase was achieved. The notable features of the purified enzyme were its appreciative substrate affinity as well as catalytic efficiency, high thermo stability (70% retention of initial activity at 70 °C after 60 min of continuous exposure), and pretty good storage stability (half-life of 45 days at 5 °C).

Improved protein determination assays obtained after substitution of copper sulfate by copper oxide nanoparticles.

Copper oxide nanoparticles (nano CuO) provide Cu ions which can be easily harnessed for protein determination as an alternative to the use of copper sulfate (CuSO). In the present work, nano CuO of size <25 nm were substituted for CuSO in two of the well-known protein assays viz. Lowry method and bicinchoninic acid (BCA) method.

Multiple Extramedullary Plasmacytoma in a Setting of Complete Bone Marrow Remission: Food for Thought.

Extramedullary plasmacytoma as a mode of relapse in multiple myeloma (MM) is unusual. Current recommendations do not incorporate the routine use of 18-fluorodeoxyglucose positron emission tomography-computed tomography (FDG PET/CT) imaging prior to haematopoietic stem cell transplant (HSCT) in MM. We report a case of relapsed MM with complete remission as per IMWG criteria.

A novel polyurethane/nano ZnO matrix for immobilization of chitinolytic enzymes and optical sensing of chitin.

Purified chitinase from Vigna mungo and N-acetyl β glucosaminidase (NAGase) from Canavalia ensiformis were immobilized on to the novel polyurethane (PU)/zinc oxide nanoparticles (nano ZnO) composite matrix with a conjugation yield of 0.785±0.01mg/cm and 96.

Increasing the efficiency of immobilization and chitin determination using copper oxide nanoparticles.

A novel polyurethane (PU) support with and without copper oxide nanoparticles (nCuO) was employed for immobilization of two chitinolytic enzymes, chitinase and N-acetyl β glucosaminidase (NAGase) to yield PU/nCuO/chitinase/NAGase and PU/chitinase/NAGase conjugates respectively. The surface morphologies, topologies and bonded interactions between different components of the immobilized enzyme conjugates were characterized using Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and Fourier Transform Infrared Spectroscopy (FTIR) respectively. High conjugation yield of 0.

Immobilization and kinetics of catalase on calcium carbonate nanoparticles attached epoxy support.

A novel hybrid epoxy/nano CaCO3 composite matrix for catalase immobilization was prepared by polymerizing epoxy resin in the presence of CaCO3 nanoparticles. The hybrid support was characterized using scanning electron microscopy and Fourier transform infrared spectroscopy. Catalase was successfully immobilized onto epoxy/nano CaCO3 support with a conjugation yield of 0.

Hepatoprotective and antioxidant effects of gallic acid in paracetamol-induced liver damage in mice.

Objectives: The aim of this research paper was to investigate the hepatoprotective and antioxidant effects of gallic acid in paracetamol-induced liver damage in mice.

Methods: In the present study, the hepatoprotective and antioxidant effects of gallic acid were evaluated against paracetamol-induced hepatotoxicity in mice and compared with the silymarin, a standard hepatoprotective drug. The mice received a single dose of paracetamol (900 mg/kg body weight i.