Hydrodynamic and electro-osmotic studies of some aqueous nitrate salt solutions through a porous membrane

2013 ◽  
Vol 38 (4) ◽  
Author(s):  
Manoj Kumar ◽  
Bali Ram
Keyword(s):  
Porous Membrane ◽  
Nitrate Salt ◽  
Salt Solutions

Precursor Chemistry Effects on Development of Particulate Morphology During Evaporative Decomposition of Solutions

1984 ◽  
Vol 32 ◽  
Author(s):  
Timothy J. Gardner ◽  
D. W. Sproson ◽  
G. L. Messing
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Precursor Chemistry ◽  
Nitrate Salt ◽  
Salt Solutions ◽  
Fine Grained ◽  
Nitrate Salts ◽  
Zno Powders ◽  
Powder Characteristics

ABSTRACTFine-grained, high surface area MgO, NiO and ZnO powders were synthesized by the evaporative decomposition of solutions (EDS) technique at 1000°C from acetate and nitrate salt solutions. The powder characteristics were similar in all cases; however, aggregated powders were obtained from the nitrate salts and aggregate-free powders were obtained from the acetate solutions when reacted in air. This difference is attributed to the oxidation of the acetate radical and/or its residue and that this process acts to disaggregate the salt droplet/particles that are formed during EDS.

Chemical Morphology of Frozen Mixed Nitrate–Salt Solutions

2017 ◽  
Vol 121 (10) ◽  
pp. 2166-2171 ◽  
Author(s):  
Karen J. Morenz ◽  
D. James Donaldson
Keyword(s):  
Nitrate Salt ◽  
Salt Solutions ◽  
Chemical Morphology

Fabrication of dense nanocrystalline ZrO2−3 wt. % Y2O3 by hot-isostatic pressing

1998 ◽  
Vol 13 (7) ◽  
pp. 1875-1880 ◽  
Author(s):  
R. Chaim ◽  
M. Hefetz
Keyword(s):  
Grain Size ◽  
Hot Isostatic Pressing ◽  
Chemical Precipitation ◽  
Argon Pressure ◽  
Nitrate Salt ◽  
Salt Solutions ◽  
Isostatic Pressing ◽  
Temperature Range ◽  
Cold Pressed

Amorphous to nanocrystalline ZrO2−3 wt. % Y2O3 powders were formed by chemical precipitation from mixed nitrate salt solutions. The powders were cold pressed and presintered in air for 2 to 6 h within the temperature range of 1100 °C and 1300 °C. Hot isostatic pressing was performed for 2 to 3 h within the temperature range of 1150 °C to 1350 °C in argon pressure of 150 MPa. Fully dense pellets with grain size of 22 nm to 45 nm were formed by application of low presintering temperatures.

scholarly journals Influence of nitrate salt solutions on seed germination dynamics of Withania coagulans (Stocks) Dunal, an important medicinal plant of the Indian Thar desert

2019 ◽  
Vol 48 (2) ◽  
pp. 395-399
Author(s):  
Kavita Daiya ◽  
Pawan K Kasera
Keyword(s):  
Medicinal Plant ◽  
Germination Percentage ◽  
Thar Desert ◽  
Nitrate Salt ◽  
Salt Solutions ◽  
Withania Coagulans ◽  
Root Shoot Ratio ◽  
Endangered Medicinal Plant ◽  
Maximum Root ◽  
One Year

The effect of different concentrations (0.10, 0.25, 0.50, 0.75 and 1.0%) of nitrate salt solutions, viz. Ca(NO3)2, Co(NO3)2 and KNO3, on various aspects of fresh and one-year-old seeds and the seedling growth of Withania coagulans (Stocks) Dunal, is a critically endangered medicinal plant of the Indian Thar desert was dealt with. The maximum germination percentage in fresh and one-year-old seeds was observed in 1.0 and 0.10% Co(NO3)2 solutions, respectively. The maximum root: shoot ratio in seedlings from fresh and one-year- old seeds was observed in 0.75 and 0.50% of Ca(NO3)2 solutions, respectively.

Characterization of Cerium-Based Conversion Coatings on Al 7075-T6 Deposited from Chloride and Nitrate Salt Solutions

2011 ◽  
Vol 158 (3) ◽  
pp. C88 ◽  
Author(s):  
Simon Joshi ◽  
Becky L. Treu ◽  
Matthew J. O’Keefe ◽  
William G. Fahrenholtz
Keyword(s):  
Nitrate Salt ◽  
Conversion Coatings ◽  
Salt Solutions ◽  
Al 7075

Isomorphous replacement in electron diffraction of wet crystals of rat hemoglobin

1983 ◽  
Vol 41 ◽  
pp. 446-447
Author(s):  
William F. Tivol ◽  
Murray Vernon King ◽  
D. F. Parsons
Keyword(s):  
Electron Diffraction ◽  
Heavy Atom ◽  
Isomorphous Substitution ◽  
X Ray Diffraction ◽  
Salt Solutions ◽  
X Ray ◽  
Isomorphous Replacement ◽  
Structure Factors ◽  
Diffraction Structure ◽  
The Mean

Feasibility of isomorphous substitution in electron diffraction is supported by a calculation of the mean alteration of the electron-diffraction structure factors for hemoglobin crystals caused by substituting two mercury atoms per molecule, following Green, Ingram & Perutz, but with allowance for the proportionality of f to Z3/4 for electron diffraction. This yields a mean net change in F of 12.5%, as contrasted with 22.8% for x-ray diffraction.Use of the hydration chamber in electron diffraction opens prospects for examining many proteins that yield only very thin crystals not suitable for x-ray diffraction. Examination in the wet state avoids treatments that could cause translocation of the heavy-atom labels or distortion of the crystal. Combined with low-fluence techniques, it enables study of the protein in a state as close to native as possible.We have undertaken a study of crystals of rat hemoglobin by electron diffraction in the wet state. Rat hemoglobin offers a certain advantage for hydration-chamber work over other hemoglobins in that it can be crystallized from distilled water instead of salt solutions.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

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