Kinetics of Aspergillus niger growth at high glucose concentrations in different types of the cultures

For the purpose of using three different types of painting materials for the inner protection of the transformer vats, their behavior was studied under actual conditions of operation in the transformer (thermal stress in electro-insulating fluid based on the natural ester in contact with copper for electro-technical use and electro-insulating paper). By comparing determination of the content in furans products (HPLC technique) and gases formed (by gas-chromatography) in the electro-insulating fluid (natural ester with high oleic content) thermally aged at 130 �C to 1000 hours in closed glass vessels, it have been found that the presence the investigated painting materials lead to a change in the mechanism and kinetics of the thermo-oxidation processes. These changes are supported by oxygen dissolved in oil, what leads to decrease both to gases formation CO2, CO, H2, CH4, C2H4 and C2H6) and furans products (5-HMF, 2-FOL, 2 -FAL and 2-ACF). The painting materials investigated during the heat treatment applied did not suffer any remarkable structural changes affecting their functionality in the electro-insulating fluid based on vegetable esters.

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Kinetics of Ion-Pair Effect of Aquation of Bromopentaammine Cobalt(III) Complex in Different Dicarboxylate Media

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.324.166 ◽

2011 ◽

Vol 324 ◽

pp. 166-169 ◽

Cited By ~ 1

Author(s):

Farah Zeitouni ◽

Gehan El-Subruiti ◽

Ghassan Younes ◽

Mohammad Amira

Keyword(s):

Free Energy ◽

Solvent Effect ◽

Compensation Effect ◽

Ion Pairing ◽

Reaction Rates ◽

Ion Pair ◽

Free Energy Of Activation ◽

Different Types ◽

Different Temperatures ◽

Kinetics Of

The rate of aquation of bromopentaammine cobalt(III) ion in the presence of different types of dicarboxylate solutions containing tert-butanol (40% V/V) have been measured spectrophotometrically at different temperatures (30-600°C) in the light of the effects of ion-pairing on reaction rates and mechanism. The thermodynamic and extrathermodynamic parameters of activation have been calculated and discussed in terms of solvent effect on the ion-pair aquation reaction. The free energy of activation ∆Gip* is more or less linearly varied among the studied dicarboxylate ion-pairing ligands indicating the presence of compensation effect between ∆Hip* and ∆Sip*. Comparing the kip values with respect of different buffers at 40% of ter-butanol is introduced.

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The kinetics of the autolytic phase of growth in cultures of Aspergillus niger

Mycopathologia ◽

10.1007/bf00437370 ◽

1986 ◽

Vol 94 (2) ◽

pp. 75-78 ◽

Cited By ~ 1

Author(s):

R. Lahoz ◽

F. Reyes ◽

G. G�mez Alarc�n ◽

L. Cribeiro ◽

M. A. Junquera ◽

...

Keyword(s):

Aspergillus Niger ◽

Kinetics Of

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Etude par spectrométrie infrarouge de l'action de solvants aprotiques sur l'association ester–eau et ester–Ba2+. Discussion du rôle catalytique du solvant et de l'ion Ba2+ dans l'hydrolyse alcaline du propionate de methyle

Canadian Journal of Chemistry ◽

10.1139/v79-067 ◽

1979 ◽

Vol 57 (4) ◽

pp. 400-403 ◽

Cited By ~ 1

Author(s):

Anne Le Narvor ◽

Pierre Saumagne

Keyword(s):

Ir Spectra ◽

Charge Density ◽

Carbonyl Group ◽

Alkaline Hydrolysis ◽

Experimental Results ◽

Methyl Propionate ◽

Orbital Control ◽

Different Types ◽

Kinetics Of ◽

Better Than

The ir spectra of mixtures of methyl propionate/water and methyl propionate/Ba2+ in dimethylsulfoxide and in acetonitrile have been recorded in the region of the νCO mode of the ester. Evidence is presented to indicate the presence of different types of complexes; their concentration was determined as a function of the composition of the medium. The spectroscopic results are compared to those from the kinetics of the alkaline hydrolysis in the same conditions. It is demonstrated that the orbital control explains the experimental results better than does the charge density on the carbon of the carbonyl group. [Journal translation]

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Kinetics of spreading in initial stages in metallic systems with different types of interaction between components. IV. Effect of chemical reaction on the kinetics of spreading in tin—Iron group metal systems

Powder Metallurgy and Metal Ceramics ◽

10.1007/bf02676025 ◽

1998 ◽

Vol 37 (7-8) ◽

pp. 400-406 ◽

Cited By ~ 1

Author(s):

V. N. Eremenko ◽

L. I. Kostrova ◽

N. D. Lesnik

Keyword(s):

Chemical Reaction ◽

Iron Group ◽

Group Metal ◽

Iron Group Metal ◽

Different Types ◽

Kinetics Of ◽

Metallic Systems

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Dye removal abilities of the mesophilic and thermophilic biomass: a kinetics study

Global NEST Journal ◽

10.30955/gnj.002608 ◽

2018 ◽

Vol 20 (2) ◽

pp. 408-416

Keyword(s):

Intraparticle Diffusion ◽

Second Order ◽

Intraparticle Diffusion Model ◽

First Order Kinetics ◽

Different Types ◽

Pseudo Second Order ◽

Acidic Conditions ◽

Red Dye ◽

Experimental Kinetics ◽

Kinetics Of

Mesophilic biomass and thermophilic biomass samples were isolated and used to remove Dorasyn Red dye from aqueous solutions. The biosorption kinetics of dye uptake by four different types of biomass at three temperatures (20, 30, and 40 °C) were investigated using pseudo-first order kinetics, pseudo-second order kinetics, intraparticle diffusion, Elovich, and Bangham models. The pseudo-second-order kinetics model and the first stage of the intraparticle diffusion model were effective in describing the experimental kinetics data. The biosorption results showed that the mesophilic biomass samples could be useful for removing dye under acidic conditions.

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Warpage Behaviors of System-in-Packages on a Substrate Strip

International Symposium on Microelectronics ◽

10.4071/2380-4505-2018.1.000344 ◽

2018 ◽

Vol 2018 (1) ◽

pp. 000344-000348

Author(s):

Eric Ouyang ◽

Billy Ahn ◽

SeonMo Gu ◽

Jim Hsu ◽

Yonghyuk Jeong ◽

...

Keyword(s):

Material Characterization ◽

Epoxy Resins ◽

Curing Process ◽

Molding Compound ◽

Advanced Material ◽

Curing Reaction ◽

Different Types ◽

The Impact ◽

Compound Materials ◽

Kinetics Of

Abstract In this paper, the impact of two different types of warpage, strip warpage and system-in-packages (SiP) module warpage, are considered and studied, both experimentally and numerically. An advanced material characterization method is also conducted to study the curing reaction and Pressure-Volume-Temperature-Cure (PVTC) kinetics of the packages. The curing reaction of epoxy resins, as a function of temperature and activation energies, is experimentally determined. During the curing process, the viscosity of epoxy resins change with temperature and conversion rate. The Castro-Macosko model is adopted to describe the rheological properties of epoxy resins. Experimentally, we have prepared substrate strip samples with different component density and molding compound materials. Each substrate strip contains eighteen system-in-packages. The warpages of all substrate strips and all the system-in-package modules were measured, compared, and correlated.

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