Effects of Moisture-Induced Whey Protein Aggregation on Protein Conformation, the State of Water Molecules, and the Microstructure and Texture of High-Protein-Containing Matrix

2008 ◽  
Vol 56 (12) ◽  
pp. 4534-4540 ◽  
Author(s):  
Peng Zhou ◽  
Xiaoming Liu ◽  
Ted P. Labuza
Keyword(s):  
Protein Aggregation ◽  
Whey Protein ◽  
Protein Conformation ◽  
The State ◽  
High Protein ◽  
Water Molecules ◽  
State Of Water

Infrared study of the state of water in the hydration shell of DNA

1970 ◽  
Vol 48 (10) ◽  
pp. 1536-1542 ◽  
Author(s):  
Michael Falk ◽  
A. G. Poole ◽  
C. G. Goymour
Keyword(s):  
Liquid Water ◽  
Low Temperatures ◽  
Hydration Shell ◽  
The State ◽  
Water Molecules ◽  
Surrounding Water ◽  
Infrared Study ◽  
Hydration Shells ◽  
State Of Water ◽  
Bond Strengths

The state of water in the hydration shell of DNA was studied by infrared spectroscopy. The stretching bands of isotopically dilute HDO adsorbed on DNA have nearly the same band profiles as those of HDO in liquid water. This indicates a distribution of hydrogen-bond strengths similar to that in liquid water. At low temperatures, the spectra show that an inner layer of about 10 water molecules per nucleotide is incapable of crystallization, even when the surrounding water crystallizes into ice I. The biopolymer hydration shells are not "ice-like" in the sense of crystalline ordering into an ice-like structure.

The state of water molecules in cubooctahedra of NaA, NaX and hydrosodalite

Zeolites ◽  
1984 ◽  
Vol 4 (2) ◽  
pp. 120-126 ◽  
Author(s):  
W. Oehme ◽  
D. Michel ◽  
H. Pfeifer ◽  
S.P. Zhdanov
Keyword(s):  
The State ◽  
Water Molecules ◽  
State Of Water

scholarly journals Hydrophilicity–Hydrophobicity Characteristics of Solid Surfaces and the State of Water near Surfaces of a Various Nature

2002 ◽  
Vol 20 (9) ◽  
pp. 927-935 ◽  
Author(s):  
Yu.I. Tarasevich ◽  
I.G. Polyakova ◽  
V.E. Polyakov
Keyword(s):  
Water Structure ◽  
Hydrophobic Surface ◽  
Bulk Water ◽  
The State ◽  
Solid Surfaces ◽  
Water Molecules ◽  
Saturated Vapour ◽  
Hydrophilic Surfaces ◽  
State Of Water ◽  
Contact Angle Of Wetting

Values for the surface tension, π, of 85 mJ/m2 and for the contact angle of wetting by water as its saturated vapour, θV, of 75° are proposed as criteria for distinguishing between hydrophilic and hydrophobic solid surfaces. It is shown that the water boundary layers at hydrophilic surfaces are more ordered while those at hydrophobic surfaces are less ordered relative to the situation in the bulk water structure. The localised model can be used to describe the state of motion of water molecules at a hydrophilic surface, while the motion of water molecules near a hydrophobic surface conforms to the non-localised model.

ELECTRODYNAMIC SENSOR FOR ASSESSING TRANSFORMATIONS OF THE STATE OF WATER IN BIOLOGICAL OBJECTS

2018 ◽  
Vol 77 (12) ◽  
pp. 1103-1112
Author(s):  
Ch. Liu ◽  
I. N. Bondarenko ◽  
A. Yu. Panchenko ◽  
N. I. Slipchenko
Keyword(s):  
The State ◽  
Biological Objects ◽  
State Of Water

ELECTRODYNAMIC SENSOR FOR DETERMINING THE STATE OF WATER IN BIOLOGICAL OBJECTS

2019 ◽  
Vol 78 (9) ◽  
pp. 801-811
Author(s):  
Ch. Liu ◽  
I. N. Bondarenko ◽  
A. Yu. Panchenko ◽  
N. I. Slipchenko
Keyword(s):  
The State ◽  
Biological Objects ◽  
State Of Water

CONSIDERATION OF THE VALIDITY OF THE STATISTICAL CHARACTERISTICS OF pH IN SURFACE WATERS

2019 ◽  
Vol 13 (2) ◽  
pp. 52-58
Author(s):  
V. B. Korobov ◽  
I. V. Miskevich ◽  
A. S. Lokhov ◽  
K. A. Seredkin
Keyword(s):  
Field Measurements ◽  
Heavy Precipitation ◽  
The State ◽  
Statistical Characteristics ◽  
Mean Values ◽  
River Waters ◽  
Ph Values ◽  
State Of Water ◽  
Environment Temperature ◽  
Unit Characteristic

Abstract: pH is one of the most important parameters characterizing the state of water systems. The arithmetic mean values of samples are often used when averaging serial pH measurements in water bodies, as is usually done for other characteristics of the state of the natural environment (temperature, salinity, oxygen concentrations, suspended solids, etc.). However, in this case such an operation is illegal, since the addition of logarithms, which by definition are pH, is non-additive. The authors conducted a study to determine the extent to which pH variability in natural objects such an operation would not distort the results. For this, several samples of the pH index were generated in various ranges of its theoretically possible and natural variability. It was established that with pH variability of less than a unit characteristic of marine pH values, the statistical characteristics of the indicator and [H+ ] concentrations differ slightly, and the medians of the samples coincide. It is concluded that with such ranges characteristic of the waters of the oceans, there is no need to recalculate previously obtained results. However, for the estuaries of rivers flowing into tidal seas, as shown by field measurements, the pH variability in the mixing zone of sea and river waters is several times higher. Similar situations may occur when heavy precipitation falls on the water surface, as well as during floods. In these cases, a simple averaging of the pH values will no longer be correct. In such cases, the use of other averaging algorithms and the choice of stable statistical characteristics are required.

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