Influence of temperature, time and alkali concentration on protein extraction from muskmelon seed meal

2021 ◽  
pp. 1-8
Author(s):  
Lourembam Monika Devi ◽  
Laxmikant S. Badwaik
Keyword(s):  
Protein Extraction ◽  
Seed Meal ◽  
Alkali Concentration ◽  
Influence Of Temperature ◽  
Temperature Time

Influence of Temperature-Time Mode of Crystallization on Electrophysical Characteristics of the Polypropylene/Magnetite Nanocomposite

2019 ◽  
Vol 201 (1) ◽  
pp. 218-223
Author(s):  
M. A. Ramazanov ◽  
H. A. Shirinova ◽  
F. V. Hajiyeva ◽  
A. Kh. Karimova
Keyword(s):  
Magnetic Field ◽  
Dielectric Permittivity ◽  
Cooling Rate ◽  
Polymer Nanocomposites ◽  
Hot Pressing ◽  
Nanocomposite Materials ◽  
Negative Magnetoresistance ◽  
Electrophysical Properties ◽  
Influence Of Temperature ◽  
Temperature Time

In the present study, the influence of the temperature–time mode of crystallization (TTC) on the electrophysical properties of polymer-based PP + Fe3O4 nanocomposite materials was investigated. Also, the effect of the temperature-time mode of crystallization of nanocomposites on the negative magnetoresistance (NMR) effect that observed in this material was investigated. It was found that dielectric permittivity of polymer nanocomposites rises with increasing of cooling rate. The cooling rate of nanocomposites after hot-pressing also affects the NMR effect of these materials. The conductivity of the material under the influence of magnetic field improves with increasing of its cooling rate, which leads to increasing of NMR effect.

scholarly journals Preparation of SBS Modified Emulsified Asphalt in High Cold Region

2019 ◽  
Vol 275 ◽  
pp. 04004
Author(s):  
HOU Yanming
Keyword(s):  
Development Time ◽  
Cold Region ◽  
Influence Of Temperature ◽  
Modified Asphalt ◽  
Cold Area ◽  
Asphalt Modification ◽  
Road Performance ◽  
Emulsified Asphalt ◽  
Sbs Modified Asphalt ◽  
Temperature Time

A kind of SBS modified emulsified asphalt for highly cold area was studied by experiments. The research includes two aspects: the first is preparation of SBS modified asphalt. The influence of temperature, time, shear rate and development time on asphalt modification are determined, so as to determine the process of SBS modified asphalt. On this basis, the blending ratio of SBS modified emulsified asphalt was determined by experiments. The results show that the emulsified asphalt produced by the equipment is of good quality and good ductility.4%SBS latex content can make emulsified asphalt meet the standard requirements, but only 6%SBS latex content can obtain better road performance. Although the softening point of SBS modified emulsified asphalt prepared by this method is still low, it can meet the requirements of high cold area.

scholarly journals Precipitation of Germanium from Sulphate Solutions Containing Tin and Indium Using Tannic Acid

2019 ◽  
Vol 9 (5) ◽  
pp. 966 ◽  
Author(s):  
Michał Drzazga ◽  
Andrzej Chmielarz ◽  
Grzegorz Benke ◽  
Katarzyna Leszczyńska-Sejda ◽  
Magdalena Knapik ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Tannic Acid ◽  
Process Conditions ◽  
Influence Of Temperature ◽  
Temperature Time

The precipitation of tannin complex of germanium from sulfuric solutions obtained after dross leaching was investigated. The tested solutions contained mainly zinc, germanium, indium, and tin. The influence of temperature, time, amount of added tannic acid and its purity was determined. The application of pure tannic acid allowed the precipitation of >99% of germanium and decreased its concentration in a solution <0.015 g/dm3. It required ca. 11–13 g of pure tannic acid per each 1 g of dissolved germanium. The preferred process conditions for Ge precipitation using powder tannic acid were 90 °C, 90 min, whereas for 20% aq. solution—5 min. It was found that 40% to 50% of tin coprecipitated at these conditions. Therefore, a detinning operation using hydrogen peroxide was proposed. It allowed the removal of >99% Sn and reduced its concentration in the solution below 0.025 g/dm3.

Preparation of WPU Wet-Rubbing Fastness Improver

2015 ◽  
Vol 1094 ◽  
pp. 109-112 ◽  
Author(s):  
Shu Ling Cui
Keyword(s):  
Polyethylene Glycol ◽  
Propionic Acid ◽  
Waterborne Polyurethane ◽  
Diphenylmethane Diisocyanate ◽  
Optimal Process ◽  
Influence Of Temperature ◽  
Temperature Time ◽  
Dimethylol Propionic Acid

A wet-rubbing fastness improver was prepared by two steps: (1) synthesis of waterborne polyurethane (WPU) through the reaction of diphenylmethane diisocyanate (MDI), polyethylene glycol (PEG), dimethylol propionic acid (DMPA), and diethylenetriamine; (2) modification of WPU by reaction with epichlorohydrin. Influence of temperature, time, concentration and ratio of monomers on the preparation was studied. The optimal process for WPU synthesis is as follows: temperature 100°C, time 3h, diethylenetriamine 1.5 % and DMPA7% (on weight of monomers). The modification reaction can be proceeded at temperature 100°C for 2h with epichlorohydrin 2.7 %.

Study on Preparation and MD Simulation of Nano Fe4N

NANO ◽  
2017 ◽  
Vol 12 (06) ◽  
pp. 1750074 ◽  
Author(s):  
K. M. Wang ◽  
H. N. Wu ◽  
C. Q. Wang ◽  
X. Q. Li
Keyword(s):  
Magnetic Material ◽  
Molecular Dynamics ◽  
Md Simulation ◽  
Combined Method ◽  
Soft Magnetic ◽  
Influence Of Temperature ◽  
Average Size ◽  
Temperature Time ◽  
N Powder ◽  
Important Significance

Nano Fe4N powder has been successfully prepared by the combination between high pressure combined method of reduction and nitriding and molecular dynamics (MD) simulation. The phase, composition, morphology, and magnetic properties have been preliminarily characterized by XRD, TEM, and VSM to investigate the influence of temperature, time, ammonia hydrogen ratio, and pressure during reaction process on the preparation. The results indicate that the preferable nano Fe4N powder of the average size around 35[Formula: see text]nm could be obtained nitriding at 0.4[Formula: see text]MPa and 673[Formula: see text]K for 2.5[Formula: see text]hours with the ammonia hydrogen ratio being 3:1. The results of magnetic detection show that the nano Fe4N produced here is a fairly desirable soft magnetic material with Ms[Formula: see text][Formula: see text][Formula: see text]169.70[Formula: see text]emu/g. This process could reduce the reaction temperature and shorten the reaction time, which is of important significance to the industrial production of nano Fe4N powder.

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