نتایج جستجو برای: spectroscopic technique
تعداد نتایج: 654386 فیلتر نتایج به سال:
a novel quaternary ammonium-based cationic gemini surfactant (s6) having 1,6 di-bromo hexane as a spacer, have been used and its interaction with insulin in aqueous solution (ph, 7.40) was investigated by several methods including fluorescence spectroscopy, uv-vis spectroscopy, circular dichroism, dynamic light scattering, ζ-potential measurements, conductivity and transmission electron microsc...
Nanoparticle-based magnetic resonance imaging T2 negative agents are of great interest, and much effort is devoted to increasing cell-loading capability while maintaining low cytotoxicity. Herein, two classes of mixed-ligand protected magnetic-responsive, bimetallic gold/iron nanoparticles (Au/Fe NPs) synthesized by a two-step method are presented. Their structure, surface composition, and magn...
Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are two extremely important techniques with applications ranging from molecular structure determination to human imaging. However, in many cases the applicability of NMR and MRI are limited by inherently poor sensitivity and insufficient nuclear spin lifetime. Here we demonstrate a cost-efficient and fast technique that tackl...
Raman microscopy is employed to spectroscopically image biological cells previously exposed to fluorescently labelled polystyrene nanoparticles and, in combination with K-means clustering and principal component analysis (PCA), is demonstrated to be capable of localising the nanoparticles and identifying the subcellular environment based on the molecular spectroscopic signatures. The neutral na...
One-nucleon overlap functions required for various nucleon-removal calculations must be solutions of the inhomogeneous equation with a source term whose shape and strength are determined by nuclear wave functions and the effective interaction of the removed nucleon with the nucleons in the remainder nucleus. A number of previous works has reported calculations of the source term and the overlap...
Introduction – Despite the many advantages of Chemical Shift Imaging (CSI) [1] over ordinary single voxel spectroscopy, its onedimensional (1D) spectra are still limited by severe spectral overlap, which can complicate quantification of metabolites. Twodimensional Magnetic Resonance Spectroscopy (2D MRS) aims to alleviate the quantification problems due to spectral overlap by pushing resonances...
Development of a phenotyping platform capable of noninvasive biochemical sensing could offer researchers, breeders, and producers a tool for precise response detection. In particular, the ability to measure plant stress in vivo responses is becoming increasingly important. In this work, a Raman spectroscopic technique is developed for high-throughput stress phenotyping of plants. We show the ea...
Terahertz time-domain (THz-TD) imaging plays an increasingly significant role in the study of solid-state materials by enabling simultaneous extraction spectroscopic composition and surface topography far-infrared region (3–300 cm−1). However, when applied to works art reflection configuration, challenges arise, including weak signal intensity, multiple losses, distortion. This proposes a pract...
Glycoproteins are becoming popular in the pharmaceutical industry, prompting need for an effective spectroscopic technique that can differentiate them. SERS is one such ideal glycan analysis several key reasons, which discussed here.
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