Infrared Analysis of Butadiene

1944 ◽  
Vol 16 (7) ◽  
pp. 422-424 ◽  
Author(s):  
L J. Brady
Keyword(s):  
Infrared Analysis

Single-Kernel near Infrared Analysis of Bulk Wheat Heterogeneity—A Theory of Sampling Reference Study

NIR news ◽  
2008 ◽  
Vol 19 (1) ◽  
pp. 4-7 ◽  
Author(s):  
Erik Tønning ◽  
Lars Nørgaard ◽  
Søren B. Engelsen ◽  
Lene Pedersen ◽  
Kim H. Esbensen
Keyword(s):  
Near Infrared ◽  
Infrared Analysis ◽  
Theory Of Sampling

scholarly journals Morphology and crystallization kinetics of Rubber-modified Nylon 6 Prepared by Anionic In-situ Polymerization

2020 ◽  
Vol 27 (1) ◽  
pp. 204-215
Author(s):  
Hongkai Zhao ◽  
Dengchao Zhang ◽  
Yingshuang Li
Keyword(s):  
Crystallization Kinetics ◽  
In Situ Polymerization ◽  
Good Description ◽  
Nylon 6 ◽  
Avrami Equation ◽  
Infrared Analysis ◽  
Chain Segment ◽  
The Impact ◽  
Kinetics Of

AbstractIn this work, we modified nylon 6 with liquid rubber by in-situ polymerization. The infrared analysis suggested that HDI urea diketone is successfully blocked by caprolactam after grafting on hydroxyl of HTPB, and the rubber-modified nylon copolymer is generated by the anionic polymerization. The impact section analysis indicated the rubber-modified nylon 6 resin exhibited an alpha crystal form.With an increase in the rubber content, nylon 6 was more likely to generate stable α crystal. Avrami equation was a good description of the non-isothermal crystallization kinetics of nylon-6 and rubber-modified nylon-6 resin. Moreover, it is found that the initial crystallization temperature of nylon-6 chain segment decreased due to the flexible rubber chain segment. n value of rubber-modified nylon-6 indicated that its growth was the coexistence of two-dimensional discoid and three-dimensional spherulite growth. Finally, the addition of the rubber accelerated the crystallization rate of nylon 6.

scholarly journals Proxy Measures and Novel Strategies for Estimating Nitrogen Utilisation Efficiency in Dairy Cattle

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 343
Author(s):  
Anna Lavery ◽  
Conrad Ferris
Keyword(s):  
Near Infrared ◽  
Isotope Analysis ◽  
Strong Relationship ◽  
Nitrogen Isotope ◽  
Invasive Technique ◽  
Infrared Analysis ◽  
Resonance Spectroscopy ◽  
Dietary Nitrogen ◽  
Nitrogen Utilisation ◽  
Utilisation Efficiency

The efficiency with which dairy cows convert dietary nitrogen (N) to milk N is generally low (typically 25%). As a result, much of the N consumed is excreted in manure, from which N can be lost to the environment. Therefore there is increasing pressure to reduce N excretion and improve N use efficiency (NUE) on dairy farms. However, assessing N excretion and NUE on farms is difficult, thus the need to develop proximate measures that can provide accurate estimates of nitrogen utilisation. This review examines a number of these proximate measures. While a strong relationship exists between blood urea N and urinary N excretion, blood sampling is an invasive technique unsuitable for regular herd monitoring. Milk urea N (MUN) can be measured non-invasively, and while strong relationships exist between dietary crude protein and MUN, and MUN and urinary N excretion, the technique has limitations. Direct prediction of NUE using mid-infrared analysis of milk has real potential, while techniques such as near-infrared spectroscopy analysis of faeces and manure have received little attention. Similarly, techniques such as nitrogen isotope analysis, nuclear magnetic resonance spectroscopy of urine, and breath ammonia analysis may all offer potential in the future, but much research is still required.

scholarly journals Synergistic Flame-Retardant Mechanism of Dicyclohexenyl Aluminum Hypophosphite and Nano-Silica

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1211 ◽  
Author(s):  
Heng Zhang ◽  
Junliang Lu ◽  
Hongyan Yang ◽  
Heng Yang ◽  
Jinyan Lang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Combustion Surface ◽  
Carbon Layer ◽  
Material Surface ◽  
Infrared Analysis ◽  
Index Test ◽  
Nano Silica ◽  
Cone Calorimetry ◽  
Flame Retardant Property ◽  
Aluminum Hypophosphite

The flame retardant dicyclohexenyl aluminum hypophosphite (ADCP) and nano-silica are added to PA66 to improve flame retardant property of the composite. The flame-retardant property of the composite is tested via oxygen index test, vertical burning test, and cone calorimetry test. Combustion residues are tested using scanning electron microscopy, EDS spectroscopy, and Fourier infrared analysis. Results show that flame-retardant ADCP can effectively promote the formation of a porous carbon layer on the combustion surface of PA66. Nano-silica easily migrates to the material surface to improve the oxidation resistance of the carbon layer and the density of the carbon layer’s structure. It can also effectively prevent heat, flammable gases, and oxygen from entering the flame zone and enhance the flame retardant properties of ADCP.

Infrared analysis of porous silicon carbide

2005 ◽  
Vol 202 (8) ◽  
pp. 1548-1551 ◽  
Author(s):  
A. M. Rossi ◽  
F. Giorgis ◽  
V. Ballarini ◽  
S. Borini
Keyword(s):  
Silicon Carbide ◽  
Porous Silicon ◽  
Infrared Analysis ◽  
Porous Silicon Carbide

scholarly journals The high-resolution infrared analysis of the ν3 and ν6 bands of CD3Br

2021 ◽  
Vol 376 ◽  
pp. 111405
Author(s):  
T. Masiello ◽  
S. Ray ◽  
J.W. Vant ◽  
C.S. Brauer ◽  
T.A. Blake
Keyword(s):  
High Resolution ◽  
Infrared Analysis

scholarly journals In VitroEvaluation of Antiprotozoal and Antiviral Activities of Extracts from ArgentineanMikaniaSpecies

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Laura C. Laurella ◽  
Fernanda M. Frank ◽  
Andrea Sarquiz ◽  
María R. Alonso ◽  
Gustavo Giberti ◽  
...  
Keyword(s):  
Dengue Virus ◽  
Virus Type ◽  
Sesquiterpene Lactones ◽  
Infrared Analysis ◽  
Leishmania Braziliensis ◽  
Organic Extract ◽  
Chromatographic Profile ◽  
Antiviral Activities ◽  
Dengue Virus Type 2

The aim of this study was to investigate the antiprotozoal and antiviral activities of four ArgentineanMikaniaspecies. The organic and aqueous extracts ofMikania micrantha, M. parodii, M. periplocifolia,andM. cordifoliawere tested onTrypanosoma cruziepimastigotes,Leishmania braziliensispromastigotes, and dengue virus type 2. The organic extract ofM. micranthawas the most active againstT. cruziandL. braziliensisexhibiting a growth inhibition of77.6±4.5% and84.9±6.1%, respectively, at a concentration of 10 μg/ml. The bioguided fractionation ofM. micranthaorganic extract led to the identification of two active fractions. The chromatographic profile and infrared analysis of these fractions revealed the presence of sesquiterpene lactones. None of the tested extracts were active against dengue virus type 2.

Ion beam and infrared analysis of medieval stained glass

2004 ◽  
Vol 79 (2) ◽  
pp. 373-378 ◽  
Author(s):  
M. Vilarigues ◽  
R.C. da Silva
Keyword(s):  
Ion Beam ◽  
Infrared Analysis ◽  
Stained Glass
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