A phase equilibrium investigation of selected source controls on the composition of melt batches generated by sequential melting of an average metapelite

2019 ◽  
Vol 491 (1) ◽  
pp. 223-241 ◽  
Author(s):  
Matthew J. Mayne ◽  
Gary Stevens ◽  
Jean-François Moyen
Keyword(s):  
Phase Equilibrium ◽  
Iron Content ◽  
Bulk Composition ◽  
Calcium Content ◽  
Rock System ◽  
Fluid State ◽  
Incompatible Elements ◽  
Equilibrium Approach ◽  
Path Dependent ◽  
Temperature Path

AbstractThe ability of Rcrust software to conduct path-dependent phase equilibrium modelling with automated changing bulk compositions allows for a phase equilibrium approach to investigate an array of source controls for their effect on the bulk compositions of melts produced by sequential melting events. The following source controls of the rock system are considered: (1) initial magnesium and iron content; (2) initial sodium and calcium content; (3) pressure–temperature path followed by the system; and (4) threshold by which melt extractions in the system are triggered. These source controls are investigated in a water-restricted system and a water-in-excess system. The permutation of these cases resulted in 128 different modelled pressure–temperature bulk composition paths investigating the melting of an average pelite composition. The resultant melt compositions are compared to that of a natural granite dataset and provide a good fit for the incompatible elements Na2O and K2O with the allowance that granites most likely form as magmas consisting of melt and ferromagnesian-rich crystals. The fluid state of the system is shown to have the strongest control on melt compositions, with the pressure–temperature path having subordinate control on the volume and composition of melts produced.

A Simple Phase Equilibrium Approach To the Problem of Oil-Ash Corrosion

CORROSION ◽  
1956 ◽  
Vol 12 (11) ◽  
pp. 23-32 ◽  
Author(s):  
W. K. FOSTER ◽  
M. H. LEIPOLD ◽  
T. S. SHEVLIN
Keyword(s):  
Phase Equilibrium ◽  
Equilibrium Approach ◽  
Simple Phase

Genetic variability and character association studies in Jack bean [Canavalia ensiformis (L.) Dc.] for quality characters

2015 ◽  
Vol 35 (4) ◽  
Author(s):  
Pradeepthi Lenkala ◽  
K. Radha Rani ◽  
N. Sivaraj ◽  
K. Ravinder Reddy ◽  
M. Jaya Prada
Keyword(s):  
Genetic Variability ◽  
Protein Content ◽  
Iron Content ◽  
Association Studies ◽  
Positive Association ◽  
Calcium Content ◽  
Sodium Content ◽  
Significant Positive Association ◽  
Jack Bean ◽  
Positive Direct

The experiment was conducted at NBPGR Regional Station, Rajendranagar during 2013-14 (August 2013 to February 2014) to study the genetic variability and association among the quality characters in jack bean. The results revealed that significant variation was observed for all the characters. Among the characters studied, the highest heritability coupled with genetic advance as percent of mean was observed for magnesium followed by calcium and iron contents. However, heritability alone was found to be highest for iron content followed by magnesium, calcium and protein contents. Calcium content had significant positive association with protein content whereas magnesium, calcium and iron content recorded the positive direct effect on protein content while sodium content have negative effect.

scholarly journals Chemical characterization and antioxidant potential of native fruits of the Cerrado of northern Minas Gerais

2020 ◽  
Vol 23 ◽  
Author(s):  
Amanda Laís Alves Almeida Nascimento ◽  
Igor Viana Brandi ◽  
Carla Adriana Ferreira Durães ◽  
Juliana Pinto de Lima ◽  
Sandro Braga Soares ◽  
...  
Keyword(s):  
Iron Content ◽  
Chemical Characterization ◽  
Calcium Content ◽  
Magnesium Content ◽  
Antioxidant Potential ◽  
Total Phenolic ◽  
Tropical Fruits ◽  
Mauritia Flexuosa ◽  
Eugenia Dysenterica ◽  
Annona Crassiflora

Abstract This study aimed to chemically characterize the pulps of the tropical fruits araticum (Annona crassiflora), buriti (Mauritia flexuosa), coquinho azedo (Butia capitata), cagaita (Eugenia dysenterica), and cajá (Spondias mombin), with a focus on antioxidant potential and microminerals. Calcium levels in the Araticum pulp are 9.35 mg/100 g and the iron content was 4.78 mg/100 g. In cagaita pulp, the calcium content was 15.35 mg/100 g and magnesium content was 66.00 mg/100 g. The iron content present in coquinho pulp was 11.47 mg/100 g and in cagaita it was 11.53 mg/100 g. The extracts with the highest contents of total phenolic compounds were araticum (433.80 mg GAE/g) and coquinho (173.5 mg GAE/g). Araticum pulp had the highest antioxidant potential because it had the lowest EC50 (0.04 mg/mL). The results presented here demonstrate the great potential of the fruits of the Cerrado in terms of rich mineral nutrients and bioactive compounds.

Genetic variability studies for yield, yield contributing and quality traitsin okra [Abelmoschus esculentus (L.) Moench.]

2016 ◽  
Vol 50 (6) ◽  
Author(s):  
R. A. Jadhav ◽  
S. B. Bagwale ◽  
L. N. Jawale ◽  
D. B. Deosarkar
Keyword(s):  
Vitamin C ◽  
Plant Height ◽  
Iron Content ◽  
Block Design ◽  
Calcium Content ◽  
Phenotypic Selection ◽  
Randomized Block Design ◽  
Additive Gene ◽  
High Heritability ◽  
Number Of Branches

The present investigation was carried out during Kharif 2014. The experimental material consists of 40 different genotypes of okra with three checks Arka Anamika, Parbhani Kranti and Pusa Sawani. The materials were grown in randomized block design with three replications during Kharif 2014 on the field of Department of Agricultural Botany, College of Agriculture, VNMKV, Parbhani. The investigation carried out in the present study revealed that the genotypes 136 Thin, 003163, Kashi Pragati, Kashi Vibhuti and BO 13 showed better performance for traits namely plant height, length of fruit, calcium content, iron content, vitamin C content and fruit yield per hectare. Among the genotypes 136 Thin and 003163 had given highest yield. The high genotypic and phenotypic coefficient of variation was observed for characters namely number of branches, yield per hectare, yield per plot and yield per plant. All these traits indicate additive effect showed response for selection. High heritability estimates were found for characters like number of branches, yield per plot, iron content, yield per plant, plant height, vitamin C content, number of seeds per fruit (dry fruit), fruit bearing node and calcium content indicated good inheritance of these characters. High heritability coupled with high expected genetic advance was observed for characters like plant height, calcium content, yield per plant and yield per hectare, indicated presence of additive gene action and phenotypic selection may become more effective for desired genetic improvement.

Lithium and halogens in lunar samples

1977 ◽  
Vol 285 (1327) ◽  
pp. 49-54 ◽  
Keyword(s):  
Bulk Composition ◽  
Fluorine Content ◽  
The Other ◽  
The Moon ◽  
Rock Samples ◽  
A Value ◽  
Refractory Elements ◽  
Incompatible Elements ◽  
Lunar Samples ◽  
Mare Basalts

Lithium and the halogen elements F, Cl, Br and I have been measured in soils, breccias and rock samples from all Apollo missions. With the exception of the anorthosites, the fluorine content of the lunar samples is in the same range as for C l chondrites. Contrary to fluorine the other halogen concentrations show large variations. The lowest concentrations are found in the mare basalts of Apollo 15 and 17, the highest in some highland breccias. Lithium correlates well with some of the incompatible elements in both mare basalts and 'KREEP’-containing highland soils and breccias. From the observed ratios it is evident that in the bulk composition of the Moon Li is neither enriched nor depleted; it belongs to the group of non-refractory elements. From the correlation of Li with some refractory elements (Be, La, etc.) a value of 50:50 for the refractory to non-refractory portion of the Moon is inferred without any further assumption, thus confirming previous estimates of Wanke et al. (1974a, 1975)

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