Effects of varying slopes and depths on decomposition and infrared spectrum characteristics of leaf litter in a rubber forest

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
薛欣欣 XUE Xinxin ◽  
吴小平 WU Xiaoping ◽  
王文斌 WANG Wenbin ◽  
罗雪华 LUO Xuehua ◽  
张永发 ZHANG Yongfa ◽  
...  
Keyword(s):  
Infrared Spectrum ◽  
Leaf Litter ◽  
Spectrum Characteristics

Infrared spectrum characteristics of crystalline cellulose ethers

1966 ◽  
Vol 8 (1) ◽  
pp. 168-175 ◽  
Author(s):  
R.G. Zhbankov ◽  
V.P. Komar ◽  
M.I. Rodionova ◽  
P.V. Kozlov
Keyword(s):  
Infrared Spectrum ◽  
Crystalline Cellulose ◽  
Cellulose Ethers ◽  
Spectrum Characteristics

Fourier Transformation Infrared Spectrum Characteristics of Synthetic Zeolite A

2013 ◽  
Vol 591 ◽  
pp. 12-15
Author(s):  
Xiao Hu Zhang ◽  
Chun Ying Zhang ◽  
Feng Zhan ◽  
Nan Chun Chen
Keyword(s):  
Infrared Spectrum ◽  
Fourier Transformation ◽  
Synthetic Zeolite ◽  
Raw Material ◽  
Zeolite A ◽  
X Ray Diffraction ◽  
Natural Materials ◽  
X Ray ◽  
Ft Ir ◽  
Spectrum Characteristics

Synthesis of zeolite A by the use of natural materials (naturally stellerite) has been achieved without template agent. The final product was tested with X-ray diffraction, which was identified as the zeolite A. Then, the raw material and each step product were tested with Fourier Transformation Infrared (FT-IR). Comparing their FT-IR, we analyzed their spectrum characteristics, differences and reasons.

Fourier transform infrared spectrum of 13C32S2 in the 3v3 band region

1996 ◽  
Vol 89 (4) ◽  
pp. 1145-1155
Author(s):  
JACQUES WALRAND ◽  
GHISLAIN BLANQUET ◽  
JEAN-FRANCOIS BLAVIER ◽  
HARALD BREDOHL ◽  
IWAN DUBOIS
Keyword(s):  
Fourier Transform ◽  
Infrared Spectrum ◽  
Fourier Transform Infrared ◽  
Band Region

The far infrared spectrum of H2O2 observed and calculated rotational levels of the torsional states : (n, τ) = (0, 1), (0, 3) and (1, 1)

1988 ◽  
Vol 49 (11) ◽  
pp. 1901-1910 ◽  
Author(s):  
F. Masset ◽  
L. Lechuga-Fossat ◽  
J.-M. Flaud ◽  
C. Camy-Peyret ◽  
J.W.C. Johns ◽  
...  
Keyword(s):  
Infrared Spectrum ◽  
Far Infrared

DETERMINATION OF MICRO-AMOUNTS OF 5β-PREGNAN-3α-OL-20-ONE IN URINE USING INFRARED-SPECTROMETRY

1962 ◽  
Vol 41 (2) ◽  
pp. 234-246 ◽  
Author(s):  
H. J. van der Molen
Keyword(s):  
Infrared Spectrum ◽  
Quantitative Determination ◽  
Acid Hydrolysis ◽  
Chromatographic Separation ◽  
Pure Form ◽  
Infrared Spectrometry ◽  
Hydrolysis Of

ABSTRACT A procedure for the quantitative determination of 5β-pregnan-3α-ol-20-one in urine is described. After acid hydrolysis of the pregnanolone-conjugates in urine, the free steroids are extracted with toluene. Pregnanolone is isolated in a pure form as its acetate; after chromatographic separation of the free steroids on alumina, the fraction containing pregnanolone is acetylated and rechromatographed on alumina. Quantitative determination of the isolated pregnanolone-acetate is carried out with the aid of the infrared spectrum recorded by a micro KBr-wafermethod. The reliability of the method under various conditions is discussed under the headings, specificity, accuracy, precision and sensitivity. It is possible to determine 30–40 μg pregnanolone in a 24-hours urine portion with a precision of 25%.

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