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Found 10,426 Results / Page 90 of 696
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Cryptadine C, a new C27N3-type Lycopodium alkaloid from Lycopodium cryptomerinum
2023 / Journal of Natural MedicinesA new C27N3-type Lycopodium alkaloid consisting of two decahydroquinolines and a piperidine, cryptadine C (1) was isolated from Lycopodium cryptomerinum. The structure and relative configuration of 1, which is related to those of cryptadines A and B, lycoperine A, and hupercumine A, was elucidated on the basis of spectroscopic data. Cryptadine C showed moderate inh...
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Graphene Oxide–Agar–Agar Hydrogel for Efficient Removal of Methyl Orange from Water
2023 / Advanced Nanomaterials and Their ApplicationsWe report the preparation of graphene oxide (GO)–agar–agar hydrogel and its utilization toward the removal of methyl orange (MO) dye from water. Graphene oxide–agar–agar composite hydrogel has been prepared from a mixture of chemically synthesized GO and agar–agar powder in hot water followed by cooling at room temperature. To study th...
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Deposition Time-Dependant Properties of PbS Thin Films
2023 / Advanced Nanomaterials and Their ApplicationsPbS thin films are deposited on soda-lime glass substrates using simple and inexpensive chemical bath deposition (CBD) method. We investigated the structural, morphological, and optical properties of PbS thin films as a function of deposition time. XRD and Raman analysis confirm the phase of PbS thin films. The scanning electron microscopy (SEM) examined to study t...
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A high-performance self-powered photodetector based on solution-processed nitrogen-doped graphene quantum dots/all-inorganic perovskite heterostructures
2023 / Advanced Composites and Hybrid MaterialsIn this work, a self-powered and high-performance vertical type photodetector based on solution-processed nitrogen-doped graphene quantum dots and all-inorganic perovskite nanocrystals heterostructure is achieved. The vertical type NGQDs/CsPbBr3 heterojunction photodetector was fabricated using two steps of standard lithography process and drop-casting method. Th...
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NMR Fingerprints of Formyl Phloroglucinol Meroterpenoids and Their Application to the Investigation of Eucalyptus gittinsii subsp. gittinsii
2023 / Journal of Natural ProductsNMR fingerprints provide powerful tools to identify natural products in complex mixtures. Principal component analysis and machine learning using 1H and 13C NMR data, alongside structural information from 180 published formyl phloroglucinols, have generated diagnostic NMR fingerprints to categorize subclasses within this group. This resulted in the reassignment of ...
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Controllable Anion Exchange on Perovskite Nanocrystal Solid-State Thin Films
2023 / The Journal of Physical Chemistry CColloidal mixed-halide perovskite nanocrystals (NCs) with a tunable emission color possess great potential for optoelectronic applications. However, their emission color and wavelength often change after purification and thin film deposition steps. In this work, to circumvent the emission shift issue, we report a novel method to directly tune the emission wavelengt...
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Hot-melt extruded in situ gelling systems (MeltDrops Technology): Formulation development, in silico modelling and in vivo studies
2023 / European Journal of Pharmaceutics and BiopharmaceuticsIn situ gelling systems (ISGS) can prolong retention time and bioavailability of ophthalmic solutions. The complexity and cost of ISGS avert their industrial scale-up and clinical implementation. In this study, we demonstrate novel application of hot-melt extrusion (HME) technology for continuous manufacturing of ISGS (MeltDrops Technology). Timolol maleate (TIM) a...
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Thiophene Carboxamide Analogs with Long Alkyl Chains Comprising Ethylene Glycol Units Inhibit Glioblastoma Cell Proliferation by Activating AMPK
2023 / Journal of Medicinal ChemistryGlioblastoma is a refractory malignant tumor that requires novel therapeutic strategies for effective treatment. We have previously reported that JCI-20679 (1), an analog of annonaceous acetogenins, shows potent antitumor activity against glioblastomas. However, the synthesis of 1 requires 23 steps, including 16 steps for the preparation of a tetrahydrofuran (THF) ...
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Site-Dependent Luminescence from Pr3+ in Double-Perovskite-Type Alkaline Earth Lanthanum Tantalates
2023 / The Journal of Physical Chemistry CSite-dependent photoluminescence (PL) from Pr3+ was investigated in Pr3+-doped alkaline earth lanthanum tantalates with a double-perovskite-type structure (AA’)[BB’]O6. Pr3+ was partly substituted for La3+ in both (CaLa)[CaTa]O6 (CLTO) and (Ba2)[LaTa]O6 (BLTO). The results of X-ray absorption near-edge structure of the Pr L3 absorption edge strongly sup...
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Application of CdTe quantum dots sensitized titanate nanotubes in photocatalytic degradation of organic pollutants under visible light irradiation
2023 / Journal of Environmental Chemical EngineeringThe use of solar-driven photocatalysis for the degradation of recalcitrant organic waste from water is a promising and environmentally friendly technology to meet the challenge of mitigating increasing global pollution. This paper presents a new composite of layered H2Ti3O7 hydrothermal nanotubes (TNT) with cadmium telluride quantum dots prepared by the simple mixi...
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Use of hyperspectral chemical imaging to determine the age of milled rice post harvest
2023 / Journal of Near Infrared SpectroscopyThe main goal of this study was to predict the age-after-harvest of milled rice and classify it for stale or fresh rice during storage by determining the thiobarbituric acid (TBA) value non-destructively via a hyperspectral imaging (HSI). Thai jasmine rice (KDML 105 variety) was stored at 25°C, 35°C, and 50°C and randomly sampled every month for 12 mo...
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Techno-economics feasibility of supercritical CO2 ambrette seed extraction for optimised parameters obtained using RSM
2023 / Journal of Applied Research on Medicinal and Aromatic PlantsSeeds of a native aromatic plant of India, Abelmoschus moschatus (Ambrette), Malvaceae family, were considered for extraction and techno-economic evaluation in this study considering the commercial importance of unique volatile oil in the seed coat. Supercritical fluid extraction (SFE) using CO2 as the extraction fluid was performed at different process parameters....
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Influence of rare sugar syrup on quality attributes and acceptability of bread
2023 / International Journal of Food Science & TechnologyRare sugar syrup (RSS) prepared by alkaline isomerisation of high-fructose corn syrup (HFCS) contains rare sugars as well as D-glucose (Glc) and D-fructose (Fru) and has antiobesity and antidiabetic effects. RSS was used in making bread, and the quality of the final bread product was compared with bread with added sucrose (Suc). 20°Bx RSS- and 20°Bx HFCS-...
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Immunostimulatory DNA Hydrogel Enhances Protective Efficacy of Nanotoxoids against Bacterial Infection
2023 / Advanced MaterialsWhile vaccines have been highly successful in protecting against various infections, there are still many high-priority pathogens for which there are no clinically approved formulations. To overcome this challenge, researchers have explored the use of nanoparticulate strategies for more effective antigen delivery to the immune system. Along these lines, nanotoxoi...
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Chiral Se Nanobrooms with Wavelength and Polarization Sensitive Scattering
2023 / Advanced Functional MaterialsHigh-index dielectric nanostructures offer strong magnetic and electric resonances in the visible range and low optical losses, stimulating research interest in their use for light manipulation technologies. Lithographic fabrication of dielectric nanostructures, while providing precise control over the pattern dimensions, limits the scalability of this approach f...
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