Rapid Bioenabled Formation of Ferroelectric BaTiO3at Room Temperature from an Aqueous Salt Solution at Near Neutral pH

2008 ◽  
Vol 130 (1) ◽  
pp. 4-5 ◽  
Author(s):  
Gul Ahmad ◽  
Matthew B. Dickerson ◽  
Ye Cai ◽  
Sharon E. Jones ◽  
Eric M. Ernst ◽  
...  
Keyword(s):  
Salt Solution ◽  
Room Temperature ◽  
Aqueous Salt Solution ◽  
Neutral Ph

Studies of Casein. III. The Molecular Size of α-, β-, and γ-Casein

1959 ◽  
Vol 12 (4) ◽  
pp. 734 ◽  
Author(s):  
HA McKenzie ◽  
RG Wake
Keyword(s):  
Molecular Weight ◽  
Salt Solution ◽  
Room Temperature ◽  
Molecular Size ◽  
Sedimentation Equilibrium ◽  
Urea Solution ◽  
Neutral Ph ◽  
A Value ◽  
And Diffusion ◽  
Very High

α-, β-, and x-casein are aggregated at neutral pH and room temperature in salt solution. They may be disaggregated at high pH or at neutral pH in concentrated urea solution. At neutral pH in salt solution, α-casein forms aggregates centring around a preferred size. As the pH is increased the size decreases until at pH 11 (I 0.20) it is disaggregated completely. Measurements of the molecular weight by sedimentation and diffusion at pH 11 give a value of 24,800�1000. Approach to sedimentation-equilibrium measurements at pH 12, using the Archibald method, gives a value of 25,500�1000. In 6M urea solution at pH 7.3 sedimentation and diffusion give a value of 27,600�1000. At room temperature and neutral pH, β-casein is present as single molecules in equilibrium with an aggregate of very high molecular weight. At pH 11, it is disaggregated with a molecular weight of 17,300�800 (by sedimentation-diffusion). At pH 7 in 631 urea a value of 19,800�1000 is obtained for the molecular weight. Preliminary measurements by the Archibald method at pH 12 give a value of 26,000�3000 for the molecular weight of x-casein. These results are discussed in relation to those of other workers.

scholarly journals DATA ON THE DEVELOPMENT OF HETERAKIS PAPILLOSA IN THE FOWL

1921 ◽  
Vol 34 (3) ◽  
pp. 259-270 ◽  
Author(s):  
H. W. Graybill
Keyword(s):  
Small Intestine ◽  
Salt Solution ◽  
Final Stage ◽  
Minimum Temperature ◽  
Growth And Development ◽  
Room Temperature ◽  
Freezing Temperature ◽  
Physiological Salt Solution ◽  
Natural Conditions ◽  
Short Intervals

In observations on the development of the ova of Heterakis papillosa in cultures, it was found that they failed to develop at a temperature ranging from 2.5–8°C., but developed slowly at a temperature of 11.5–13.5°C. The minimum temperature for development seems to lie between 8° and 11.5–13.5°C. At temperatures ranging in various cultures from 18–29°C. ova developed to their final stage in 7 to 12 days. Undeveloped ova subjected to a freezing temperature for a period of 4 days were viable at the end of that time. Fully developed ones remained alive when exposed out of doors for a period of 7 days at a temperature ranging from 5–62°F. Undeveloped ova survived desiccation at room temperature for a period of 16 days, but not for 41 days. Fully developed eggs were alive after desiccation for 18 days, but not after 49 days. In another instance they were no longer viable after 10 days. Embryos within ova kept in physiological salt solution at room temperature survived during a period of a little over 12 months. Fully developed ova kept in soil outdoors under circumstances approaching natural conditions contained living embryos after a period of 8 months. From a study of a series of artificially infested chickens killed at short intervals it appears that the ova of Heterakis hatch in the small intestine and the larvæ pass by way of the small and large intestines to the ceca where they undergo development to maturity. Larvæ found in the mucosa of the ceca were not in an encysted condition. Feeding of numerous artificially incubated ova may lead to a light infestation, the cause of which has not been definitely determined. A period of 57 days was required for larvæ to reach maturity in a host. The entire cycle from egg to adult requires a minimum time of about 64 days. A brief study of the growth and development of larvæ within the host has been made. No evidence was found of a migration through the tissues. A few penetrate into the mucosa of the ceca.

Transmembrane potential in vesicles formed by catanionic surfactant mixtures in an aqueous salt solution

2020 ◽  
Vol 22 (45) ◽  
pp. 26438-26451
Author(s):  
Ksenia A. Emelyanova ◽  
Polina O. Sorina ◽  
Alexey I. Victorov
Keyword(s):  
Salt Solution ◽  
Transmembrane Potential ◽  
Aqueous Salt Solution ◽  
Simple Theory ◽  
Surfactant Mixtures ◽  
Catanionic Surfactant

Simple theory shows the effects of vesicle structure and the composition of the medium on the transmembrane potential.

Spectrophotometry Study of Aqueous Salt Solution in Carbon Dioxide Microemulsions

Langmuir ◽  
2002 ◽  
Vol 18 (10) ◽  
pp. 3787-3791 ◽  
Author(s):  
Mohammed J. Meziani ◽  
Ya-Ping Sun
Keyword(s):  
Carbon Dioxide ◽  
Salt Solution ◽  
Aqueous Salt Solution

scholarly journals Droplet desorption modes at high heat flux

2019 ◽  
Vol 196 ◽  
pp. 00002
Author(s):  
Sergey Misyura ◽  
Anton Meleshkin
Keyword(s):  
Temperature Field ◽  
Salt Solution ◽  
Ambient Air ◽  
Nucleate Boiling ◽  
High Heat ◽  
Droplet Surface ◽  
Aqueous Salt Solution ◽  
Heated Wall ◽  
High Heat Flux ◽  
Desorption Rate

Nonisothermal droplet desorption of aqueous salt solution H2O/LiBr during nucleate boiling was studied experimentally. A droplet was placed on a horizontal heated wall. The initial concentration of salt C0 = 25 %. The wall temperature Tw = 120 °C and ambient air pressure is 1 bar. Thermal images of the temperature field on the droplet surface show an extremely non-uniform temperature field. At nucleate boiling in LiBr salt solution it is incorrect to predict the desorption behavior in stationary approximation. It was previously believed that the rate of evaporation does not vary with time. For the first time it is shown that the desorption rate is divided into several characteristic time intervals. These intervals is characterized by a significant change in the desorption rate.

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