A Nuclear Magnetic Resonance (NMR) and Fourier-Transform Infrared (FTIR) Study of Glycine Speciation on a Cd-Rich Montmorillonite

2000 ◽  
Vol 48 (5) ◽  
pp. 495-502 ◽  
Author(s):  
Paola Di Leo
2021 ◽  
Vol 11 (3) ◽  
pp. 3854-3860

Cord blood platelet-rich plasma is regarded as a potential therapeutic agent with wound healing and regenerative purposes. It has many advantages, such as availability, universal use, and being rich in regenerative tissue factors. To characterize the Umbilical Cord Blood Platelet Rich Plasma (UCB-PRP), umbilical cord blood is collected from healthy mothers in sterile vacutainers. Platelet-rich plasma was extracted after two sets of centrifugations and lyophilized using the freeze-drying method. The samples are subjected to physicochemical characterization using Nuclear Magnetic Resonance (NMR) and Fourier-Transform Infrared (FTIR) Spectroscopy. This translational approach provided evidence of clinical effectiveness for understanding physiology and pathophysiology at the molecular level. Accordingly, FTIR and NMR studies provided information on the structural stability of protein molecules present in UCB-PRP.


1995 ◽  
Vol 49 (10) ◽  
pp. 1474-1477 ◽  
Author(s):  
Jim Liang ◽  
Mark Roselius ◽  
David W. Johnson

The residual hydrogen content of several perfluoropolyalkylether base fluids has been determined with the use of proton nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopies. The analysis of standard samples gives a linear calibration curve for hydrogen concentrations between 0.5 and 500 ppm for both FT-IR and NMR. The two methods have similar detection limits of about 1 ppm. Analysis of identical samples of Krytox 143 AC and Krytox 143 AZ by both methods gives results which are in excellent agreement. The two methods also provide information about the chemical environment in which the hydrogen is located. In both of the Krytox samples, the hydrogen is located in CFH groups within the polymer chain.


Soil Science ◽  
2007 ◽  
Vol 172 (7) ◽  
pp. 501-515 ◽  
Author(s):  
Zhongqi He ◽  
C. Wayne Honeycutt ◽  
Baoshan Xing ◽  
Richard W. McDowell ◽  
Perry J. Pellechia ◽  
...  

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