New and improved method of investigation using thermal tools for characterization of cellulose from eucalypts pulp

2016 ◽  
Vol 638 ◽  
pp. 44-51 ◽  
Author(s):  
Elaine Cristina Lengowski ◽  
Washington Luiz Esteves Magalhães ◽  
Silvana Nisgoski ◽  
Graciela Inês Bolzon de Muniz ◽  
Kestur Gundappa Satyanarayana ◽  
...  
Keyword(s):  
Improved Method

scholarly journals An Improved Method for Optical Characterization of Mineral Dust and Soot Particles in the El Paso-Juárez Airshed

Atmosphere ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 866
Author(s):  
Javier Polanco ◽  
Manuel Ramos ◽  
Rosa M. Fitzgerald ◽  
William R. Stockwell
Keyword(s):  
Mineral Dust ◽  
El Paso ◽  
Improved Method ◽  
Likelihood Estimator ◽  
Time Resolved ◽  
Soot Particles ◽  
Scattering Coefficients ◽  
Measuring Devices ◽  
Good Agreement

Highly time-resolved aerosol measurements and analysis are necessary for a proper aerosol characterization in many polluted regions, because aerosol concentrations in polluted environments can change over time scales of minutes. However, many urban measuring sites have measuring devices that provide time resolved average aerosol concentrations over a day or two at best. Light-scattering properties of mineral dust and soot particles in the El Paso-Juárez Airshed were analyzed with an improved methodology, using the T-matrix, a maximum likelihood estimator (MLE), and data from both an acoustic extinctiometer and a laser particle counter. The hourly inter-comparisons of the scattering coefficients’ results between the model and those obtained using the instruments at a wavelength of 0.87 μm show good agreement. This methodology has been applied in the El Paso-Juárez Airshed successfully, and it could be used in other cities where mineral dust and soot are major components of the aerosol concentrations.

Improved method for the separation and characterization of keto acid 2,4-dinitrophenylhydrazones

1968 ◽  
Vol 24 (1) ◽  
pp. 112-119 ◽  
Author(s):  
Hirohiko Katsuki ◽  
Tsuya Yoshida ◽  
Chizuko Tanegashima ◽  
Shozo Tanaka
Keyword(s):  
Keto Acid ◽  
Improved Method

Isolation and Characterization of Mutants of Saccharomyces cerevisiae Auxotrophic and Conditionally Auxotrophic for 5′ -dTMP

1974 ◽  
Vol 29 (11-12) ◽  
pp. 733-738 ◽  
Author(s):  
Martin Brendel ◽  
Wolfgang W. Fäth
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Complementation Group ◽  
Improved Method ◽  
Genetical Analysis ◽  
Type Locus ◽  
Isolation And Characterization ◽  
Folic Acid Antagonists ◽  
I Gene ◽  
Respiratory Deficient

Abstract An improved method for isolation of yeast m utants auxotrophic for 5′-dTM P is presented. The procedure employs the two folic acid antagonists am inopterin and sulfanilam ide (SAA). Selectiveness of the procedure depends on concentration of SAA and time of incubation. 44 mutants auxotrophic and 3 conditionally auxotrophic for 5′-dTMP were isolated. All belong to one complementation group. The corresponding gene was designated TMP1. Tetrad dissection revealed its chromosomal nature. TMP1 is not closely linked to the genes ADE2,, LEU1, ARG 4, ILV2, HIS5, LYS1 and the mating type locus. With the centromere-linked genes ARG4 and LEU1 I gene TMP1 exhibited second division segregation frequencies of 0.42 and 0.53 respectively, indicative of centromere-linkage. Strains auxotrophic and conditionally auxotrophic for 5′-dTM P were all respiratory deficient (petite). Genetical analysis indicates that the petite phenotype is due to loss of the rho factor in cells harbouring either tmp1 or tmp1ts alleles.

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