scholarly journals Changes in Soil Humic Acid Composition after Nine Years of Repeated Application of Organic Wastes in Black Soil: a Study Using Solid-State FT-IR and (13C-NMR) Analysis

2021 ◽  
Author(s):  
Ahmed Sharaf ◽  
Jinggui Wu ◽  
Wei Fan ◽  
Juan Hua ◽  
Yaaa Opoku-Kwanowaa ◽  
...  
Keyword(s):  
Humic Acid ◽  
Solid State ◽  
Acid Composition ◽  
13C Nmr ◽  
Black Soil ◽  
Repeated Application ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Soil Humic Acid ◽  
Ft Ir

Solid-state CP/MAS 13C-NMR analysis of cellulose and tri-O-substituted cellulose ethers

1993 ◽  
Vol 21 (4) ◽  
pp. 277-281 ◽  
Author(s):  
A. Isogai ◽  
T. Kato ◽  
T. Uryu ◽  
R.H. Atalla
Keyword(s):  
Solid State ◽  
13C Nmr ◽  
Cellulose Ethers ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Cp Mas 13C Nmr

A solid-state 13C NMR analysis of molecular dynamics in aramide polymers

2006 ◽  
Vol 29 (1-3) ◽  
pp. 132-141 ◽  
Author(s):  
Dan McElheny ◽  
Veronica Frydman ◽  
Lucio Frydman
Keyword(s):  
Molecular Dynamics ◽  
Solid State ◽  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Solid State 13C Nmr

scholarly journals Solid-State 13C NMR Analysis of the Crystalline–Noncrystalline Structure and Chain Conformation of Thermotropic Liquid Crystalline Polyester

2004 ◽  
Vol 36 (10) ◽  
pp. 830-840 ◽  
Author(s):  
Miwa Murakami ◽  
Hiroyuki Ishida ◽  
Hironori Kaji ◽  
Fumitaka Horii ◽  
Masatoshi Tokita ◽  
...  
Keyword(s):  
Solid State ◽  
13C Nmr ◽  
Liquid Crystalline ◽  
Chain Conformation ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Liquid Crystalline Polyester ◽  
Solid State 13C Nmr

Solid State 13C NMR Analysis of Vulcanized Rubbers XVI. The Competitive Vulcanization of Natural Rubber and Polybutadiene Blends

1997 ◽  
Vol 70 (2) ◽  
pp. 231-242 ◽  
Author(s):  
B. Klei ◽  
J. L. Koenig
Keyword(s):  
Solid State ◽  
Natural Rubber ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Sampling Technique ◽  
Nmr Analysis ◽  
Trans Isomerization ◽  
13C Nmr Analysis ◽  
Elastomer Blend ◽  
Solid State 13C Nmr

Abstract Solid state 13C NMR was used to study the competitive vulcanization of blends of natural rubber and high cis polybutadiene. A NMR sampling technique utilizing the stacked homopolymers was developed that helps to determine the spectral differences occurring due to competitively vulcanizing an elastomer blend. The small amount of interfacial crosslinking was expected to be undetectable but has been tentatively observed. Concentration of crosslinks at the interface may occur from limited solubility of curative species in both rubbers. The NMR spectra also showed inhibition of cis-trans isomerization in natural rubber with addition of polybutadiene.

Solid state 13C NMR analysis of human gallstones from cancer and benign gall bladder diseases

2009 ◽  
Vol 36 (1) ◽  
pp. 60-65 ◽  
Author(s):  
K. Jayalakshmi ◽  
Kanchan Sonkar ◽  
Anu Behari ◽  
V.K. Kapoor ◽  
Neeraj Sinha
Keyword(s):  
Solid State ◽  
Gall Bladder ◽  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Bladder Diseases ◽  
Solid State 13C Nmr

scholarly journals Effects of long-term fertilization on soil humic acid composition and structure in Black Soil

PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0186918 ◽  
Author(s):  
Jiuming Zhang ◽  
Jingkuan Wang ◽  
Tingting An ◽  
Dan Wei ◽  
Fengqin Chi ◽  
...  
Keyword(s):  
Humic Acid ◽  
Acid Composition ◽  
Black Soil ◽  
Composition And Structure ◽  
Soil Humic Acid

scholarly journals Solid state 13C NMR analysis of Brazilian cretaceous ambers

2011 ◽  
Vol 22 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Ricardo Pereira ◽  
Rosane A. S. San Gil ◽  
Ismar S. Carvalho ◽  
Antonio Carlos S. Fernandes ◽  
Débora A. Azevedo
Keyword(s):  
Solid State ◽  
13C Nmr ◽  
Nmr Analysis ◽  
13C Nmr Analysis ◽  
Solid State 13C Nmr
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