نتایج جستجو برای: ultraviolet spectrophotometer source

تعداد نتایج: 461685  

2015
Sinyee Gan Sarani Zakaria Peivun Ng Chin Hua Chia Ruey Shan Chen

Cellulose hydrogel was produced from pretreated oil palm empty fruit bunch fiber (EFB) that went through acid hydrolysis and thermal hydrolysis. The pretreated EFB was dissolved in LiOH/urea aqueous solution using the rapid dissolution method and was subjected to a crosslinking process with the aid of epichlorohydrin to form hydrogel. The effects of both hydrolyses’ time on average molecular we...

2017
M. Srividhya H. Hridya V. Shanthi K. Ramanathan

Novel natural compounds endowed with sound bioactivities are currently the utmost need as leads toward drug discovery. For the first time, here, we report the presence of Amentoflavone (biflavonoid) in the leaves of Cassia fistula L. Structural characterization was carried out using ultraviolet-visible spectrophotometer, Fourier transform infrared, nuclear magnetic resonance, and thin-layer chr...

Journal: :Bioscience, biotechnology, and biochemistry 2009
Koichi Matsuo Hirofumi Namatame Masaki Taniguchi Kunihiko Gekko

Glycosaminoglycans (GAGs) are important polysaccharides with various biological functions, but their structures in solution are affected in a complex manner by their component residues. We successfully measured the vacuum-ultraviolet circular dichroism (VUVCD) spectra of six GAGs (chondroitin, chondroitin sulfates, hyaluronic acid, and heparin) and their component sugars (N-acetylaminosugars an...

2018
Yaru Wang

This study focused on the fabrication, characterization, and release properties of electrospun tea polyphenol (TPP) loaded porous core-shell structured fibers. The morphology, structure and properties of the electrospun TPP loaded porous core-shell fibers were investigated by a combination of Fourier transformation infrared spectroscopy (FTIR), scanning electron microscopy (SEM), contact angle ...

2016
Sohail Ahmad Naser M AbdEl-Salam Riaz Ullah

The present study deals with the antimicrobial, antioxidant, and functional group analysis of Heliotropium bacciferum extracts. Disc diffusion susceptibility method was followed for antimicrobial assessment. Noteworthy antimicrobial activities were recorded by various plant extracts against antibiotic resistant microorganisms. Plant flower extracts antioxidant activity was investigated against ...

Journal: :Biomedical optics express 2015
James May Michelle Hickey Iasonas Triantis Eleni Palazidou Panayiotis A Kyriacou

Lithium therapy is the gold standard of treatment for patients with Bipolar Disorder. However, despite its effectiveness, it is a potentially hazardous drug requiring regular monitoring of blood levels to ensure toxic levels are not reached. This paper describes the spectrophotometric analysis of Lithium carbonate in solution as a first step in developing a portable home monitoring device for b...

2017
Nichrous G Mlalila Hulda Shaidi Swai Askwar Hilonga Dattatreya M Kadam

This study presents a simple and trouble-free method for determining the antimicrobial properties of silver nanoparticles (AgNPs) based on the surface plasmon resonance (SPR) bands. AgNPs were prepared by chemical reduction method using silver nitrates as a metallic precursor and formaldehyde (HCHO) as a reducing agent and capped by polyethylene glycol. Effects of several processing variables o...

1997
LADISLAV ŠOLTÉS BERNARD SEBILLE

The stereoselectivity of the reversible binding interactions between the Dand L-tryptophan enantiomers and serum albumins of different animal species and fragments of human serum albumin (HSA) was investigated by applying three novel high performance liquid chromatographic (HPLC) arrangements. The separations were performed by means of 1) an achiral (diol-bond), 2) a chiral (bovine serum albumi...

2016
TaeHun Kim Parag Banerjee

This project studies the synthesis process of 2-D nanostructure of inorganic materials. This project studies the ZnO thin layer deposition on a commercial grade paper using Atomic Layer Deposition (ALD) technique and its effectiveness of reducing water permeability. The experiment utilizes a commercial grade blue ink for the testing of the permeability. The purpose of the experiment is to succe...

Journal: :Indonesian Journal of Chemistry 2021

In this research, TiO2 thin films were prepared using a simple sol-gel spin coating process. The characterized Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive Ray (EDX), X-ray diffraction (XRD) and Ultraviolet–visible Spectrophotometer in order to investigate the influence of different annealing temperatures structural optical properties TiO2. surface morphology images f...

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