scholarly journals Extractable calcium, magnesium, potassium and sodium in diefferent peat types

1957 ◽  
Vol 29 (1) ◽  
pp. 41-55
Author(s):  
Jaakko Kivekäs ◽  
Armi Kaila
Keyword(s):  
Calcium Content ◽  
Nutrient Content ◽  
Magnesium Content ◽  
Individual Values ◽  
Land Quality ◽  
Surface Samples ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
The Individual ◽  
Weak Tendency

An attempt was made to elucidate the content of plant-available calcium, potassium and magnesium in different kinds of virgin peat. The amounts of these cations extracted by 1 N ammonium chloride solution were supposed to give an estimate satisfactory for this purpose. Also the extractable sodium was determined. The material consisted of 208 samples mainly collected from Northern Finland. The variation in the content of extractable cations was high in all the peat groups. The individual values of one group were overlapping the range of other ones. The average calcium and magnesium contents of the Sp, CSp and SCp groups were somewhat lower than those of Cp, BCp and EuSCp groups. The same seems to be the case, with the content of extractable sodium whereas the moss peats tended to be slightly less poor in potassium than the peats of better quality. A more or less significant correlation existed in all the peat groups between the calcium content and the pH-values. The correlation was markedly lower for pH and extractable magnesium. A weak tendency to negative correlation could be noticed between pH and extractable potassium. The land quality and the calcium and magnesium content of all the surface samples were correlated with each other, although not very strongly. Within the different peat groups no correlation between these quantities could be found, except in one case. The scant supply of potassium in the surface samples did not show any connection with the land quality. The reasons responsible to the large variation of the nutrient content within a certain peat group were discussed. The fact was emphasized that on the basis of the identification of the kind of peat nothing reliable is known of the nutrient content of the sample.

scholarly journals Contents of selected macroelements in soils, potatoes and fodder beets at variable soil reaction / Zawartość wybranych makroelementów w glebach oraz w ziemniakach i burakach pastewnych przy zmiennym odczynie gleby

2015 ◽  
Vol 66 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Antoni Rogóż ◽  
Monika Tabak
Keyword(s):  
Phosphorus Content ◽  
Ph Value ◽  
Calcium Content ◽  
Magnesium Content ◽  
Soil Reaction ◽  
Potato Tubers ◽  
Ph Values ◽  
Root Crops ◽  
Calcium Magnesium ◽  
Calcium And Magnesium

Abstract The aim of the research was to determine the concentration of selected macroelements in soil and in root crops (potatoes and fodder beets) at a variable soil reaction. The changes in pH values in the studied soils influenced the content of these elements in soluble forms determined in 0.1 mol HCl·dm-3. A statistical analysis showed a positive relationship between the soil pH value and the calcium and magnesium contents in a form close to the total form, as well as the content of soluble forms of phosphorus, calcium, and magnesium. The content of the studied macroelements, i.e. phosphorus, calcium, magnesium in the cultivated fodder beets and potatoes depended on abundance and form in which the studied elements occurred in soil, and also on specie and analyzed part of the plant. Along with the increase in pH values of the an increase in the phosphorus content and reduction of the magnesium content in the roots and above-ground parts of the beets were found. The calcium content in the roots increased along with an increase in pH of the soils, whereas direction of changes in the content of this element in the petioles and laminae of the beets was not unambiguous. A slight decrease in the content of the studied elements in the potato tubers (along with the increase in pH of the soils) was found.

scholarly journals Analysis of Contents of Calcium, Magnesium and Total Hardness in Water for Pharmaceutical Use

2020 ◽  
Vol 18 (1-2) ◽  
Author(s):  
Mirjana Đermanović ◽  
Ljubica Bojanić ◽  
Biljana Vučić
Keyword(s):  
Pharmaceutical Industry ◽  
Raw Materials ◽  
Chemical Properties ◽  
Calcium Content ◽  
Magnesium Content ◽  
Total Hardness ◽  
Water Types ◽  
Primary Water ◽  
Calcium Magnesium ◽  
Hardness Values

Water is one of the most frequently used raw materials in pharmaceutical industry. Water for pharmaceutical purposes includes the two primary water types: purified water and water for injection. Drinking water used for obtaining purified water is not official in pharmacopoeia. Depending on quality prescribed for a certain product preparation, various water types and procedures have been used to prepare pharmaceutical industry water. Possible ways to obtain water for pharmaceutical purposes are: reverse osmosis, demineralization, electrodeionization, ultrafiltration, distillation. Reasons for the widespread use of water lie in the facts that it is capable of dissolving a great number of therapeutic substances, compatible with a large number of substances, appropriate to be used from a physiological aspect given that it is an integral part of the cell and the major component of body fluids and whenever the drug is administered in the form of an aqueous solution, reabsorption is rapid and complete, it also has suitable physical-chemical properties. In this study, analysis results of 15 samples of water were obtained using pharmacopoeial methods for pharmaceutical purposes. Results showed that 86.6% of water samples were accurate and 13.3% did not have appropriate calcium content, magnesium content and total hardness values.

scholarly journals Metabolic changes associated with pigmentary effector activity and pituitary removal in Xenopus lævis —II. Calcium and magnesium content of the serum

1931 ◽  
Vol 107 (753) ◽  
pp. 504-510 ◽  
Keyword(s):  
Guinea Pigs ◽  
Calcium Metabolism ◽  
Calcium Content ◽  
Magnesium Content ◽  
Blood Calcium ◽  
Parathyroid Extract ◽  
Calcium Effect ◽  
Effector Activity ◽  
Calcium And Magnesium ◽  
The Relationship

The relationship between the parathyroids and calcium metabolism has been well established. Removal of the parathyroids in mammals results in tetany accompanied by a fall in the blood calcium content (Cruickshank, Salvesen, etc.). Tetanic symptoms and their fatal consequences can be prevented in dogs by an addition of calcium lactate to the diet (Luckhardt and Goldberg) and Collip has found that parathyroid extract raises the calcium content of the blood in both normal and parathyroidectomised dogs. Later work has raised doubts as to the specificity of the calcium effect of parathyroid extract. Davies, Dickens and Dodds obtained the same effects form injections of insulin and also pituitary extracts. Contradictory results have been reported in connection with the thyroid, namely, a rise in calcium after thyroidectomy (Maxim an Vasilin), and a rise after thyroid feeding (Cahane). Mirvish and Bosman were able to produce a fall in blood calcium in rabbits both by injection of extract of suprarenal cortex and by injection of ovarian extract. Their work is in accord with that of Taylor and Caven who found a rise in serum calcium after double adrenalectomy, and that of Werner who found a rise after castration in guinea pigs and sheep.

scholarly journals STUDIES OF THE INORGANIC METABOLISM IN PNEUMONIA WITH ESPECIAL REFERENCE TO CALCIUM AND MAGNESIUM

1913 ◽  
Vol 17 (1) ◽  
pp. 71-82 ◽  
Author(s):  
Francis W. Peabody
Keyword(s):  
Calcium Content ◽  
Magnesium Content ◽  
The Body ◽  
Chlorine Content ◽  
Especial Reference ◽  
Inorganic Substances ◽  
Special Part ◽  
Calcium And Magnesium

During pneumonia the metabolism of inorganic substances deviates markedly from the normal. While chlorine, sodium, and calcium are retained in the body, potassium and magnesium are excreted normally or in excess. Two cases showed a definite loss of magnesium to the body in the febrile period. During the period of retention the chlorine content of the blood is distinctly lower than normally, the calcium content is apparently slightly lower, and the magnesium content tends also to be a little lower. The skin is shown, to play no special part in the chlorine retention. Since no organ or organs have been shown to store up large amounts of the retained substances, it is probable that they are spread diffusely throughout the body.

scholarly journals Distribution of extractable calcium, magnesium, potassium, and sodium in various depths of some virgin peat soils

1956 ◽  
Vol 28 (1) ◽  
pp. 237-247
Author(s):  
Armi Kaila ◽  
Jaakko Kivekäs
Keyword(s):  
Ammonium Chloride ◽  
Negative Correlation ◽  
Magnesium Content ◽  
Surface Layers ◽  
Peat Soils ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Surface Vegetation

It has been attempted in the present paper to study the distribution of plant available calcium, magnesium, and potassium in various depths of 25 virgin peat lands. The amounts of these cations extractable by 1 N ammonium chloride are supposed to give a rough estimation on the available content of the nutrients. Also the quantities of extracted sodium are reported. It has been found that the percentic content of these cations in the surface vegetation are higher than in the peat. Particularly marked is the accumulation of potassium in living plants and, although in a less degree, in the surface layers of peat. The variation in the distribution of the extractable amounts of the cations in various depths of the peat lands is considerable. A significant correlation exists between the depth and the magnesium content, and a negative correlation between the depth and the amount of extractable potassium. So far as the amount of cations extracted by 1 N ammonium chloride represents nutrients available for plants, calcium and magnesium are not generally minimum factors in peat soils, whereas in most soils the sources of potassium probably will be depleted by the first crops.

scholarly journals PHOSPHOGYPSUM AND VINASSE APPLICATION: SOIL CHEMICAL PROPERTIES AND ALFALFA PRODUCTIVITY AND NUTRITIONAL CHARACTERISTICS

2017 ◽  
Vol 30 (1) ◽  
pp. 213-219 ◽  
Author(s):  
RONALDO DO NASCIMENTO ◽  
◽  
JULIANA APARECIDA DE SOUZA ◽  
ADÔNIS MOREIRA ◽  
LARISSA ALEXANDRA CARDOSO MORAES ◽  
...  
Keyword(s):  
Block Design ◽  
Chemical Properties ◽  
Calcium Content ◽  
Magnesium Content ◽  
Soil Chemical Properties ◽  
Quadratic Model ◽  
Soil Calcium ◽  
Randomized Block Design ◽  
Nutritional Characteristics ◽  
Calcium Magnesium

ABSTRACT The objective of this work was to evaluate the effects of the application of phosphogypsum and vinasse on soil chemical properties and productivity and nutritional characteristics of alfalfa (Medicago sativa). The experiment was conducted in a randomized block design, using a 3×5 factorial arrangement, with three vinasse rates (0, 150 and 300 m3 ha-1) and five phosphogypsum rates (0, 3, 6, 9 and 12 Mg ha-1). The alfalfa chemical composition and shoot dry matter (SDW) and soil chemical properties (in the layers 0.0-0.2 and 0.21-0.4 m) were evaluated. The vinasse rates increased the soil potassium contents, while the phosphogypsum rates promoted linear increases in soil calcium and sulfur contents. The base saturation was increased and the magnesium content showed a quadratic response on the layer 0.21-0.4 m with the increase in phosphogypsum rates. The calcium, magnesium and phosphorus contents in the alfalfa leaves were lower with vinasse application. The phosphogypsum rates promoted linear increases in alfalfa SDW. Vinasse rated 150 m3 ha-1 was been enough to SDW increase. Calcium and magnesium contents in the leaves fitted a quadratic model, with maximum calcium content in the phosphogypsum rate of 9.5 Mg ha-1 and the minimum magnesium content in the phosphogypsum rate of 8.7 Mg ha-1. The leaf sulfur contents in all vinasse rates and leaf potassium contents in the highest vinasse rate showed maximum accumulation at near 9 Mg ha-1 of phosphogypsum.

scholarly journals Estimated average calcium – magnesium content in day meal in a sample of students from Faculty of Medicine of Sarajevo University

2021 ◽  
Vol 9 (3) ◽  
pp. 090-095
Author(s):  
Amra Catovic ◽  
Ajla Custovic
Keyword(s):  
Total Sample ◽  
Magnesium Content ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Average Intake ◽  
Optimal Health ◽  
Analysis Computer ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Diet Record

Nutrients are chemical substances obtained from food. They have different roles in body. Some are used as energy source, some as structural materials, and regulating agents. Nutrients may reduce the risks of some diseases. There are some recommendations about dietary intake of these nutrients for optimal health. This study aimed to estimate average calcium and magnesium content in day meal in a sample of students from Faculty of Medicine of Sarajevo University. A cross-sectional study was conducted during academic 2015/16 year at Faculty of Medicine of Sarajevo University. The survey covered 44 students. The research instrument was a self-administered questionnaire, by which 3-Day Diet Record was provided. The average intakes of calcium and magnesium were estimated using Nutritional analysis computer program (Nutrics Professional Nutrition Analysis Software). On daily level average intake of calcium was 718.39±311.14 mg in total sample and average intake of magnesium was 292.57±310.10 mg in total sample. Average Ca/Mg ratio was 2.45. In our sample cheese was top source of calcium with Ca/Mg ratio of 32.5, and bread was top source of magnesium with Ca/Mg ratio of 3.1. These results emphasize the importance of monitoring the food nutrition facts in order to achieve adequate nutrients intake.

SERUM BIOCHEMICAL CHANGES IN KETOTIC BUFFALOES ( BUBALUS BUBALIS)

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Usha Choudhary ◽  
Meenaxi Sareen ◽  
Anil Moolchandani
Keyword(s):  
Serum Calcium ◽  
Bubalus Bubalis ◽  
Biochemical Changes ◽  
Blood Analysis ◽  
Serum Phosphorus ◽  
Serum Minerals ◽  
Calcium Magnesium ◽  
Serum Biochemical ◽  
Calcium And Magnesium

The present study was carried out to evaluate the variations in serum minerals ( viz. calcium, magnesium and phosphorus) and transaminases in ketotic buffaloes. Results of blood analysis revealed a significant (P<0.05) reduction in serum phosphorus in ketotic buffaloes whereas nonsignificant (P>0.05) difference occur in serum calcium and magnesium in ketotic buffaloes as compared to control. At the same time significant increase in transaminases GPT, GOT and GGT have been observed .

scholarly journals THE CALCIUM AND MAGNESIUM CONTENT OF NORMAL URINE

1916 ◽  
Vol 28 (1) ◽  
pp. 237-240
Author(s):  
C.Ferdinand Nelson ◽  
W.E. Burns
Keyword(s):  
Magnesium Content ◽  
Calcium And Magnesium ◽  
Normal Urine

scholarly journals Alkalinity–silicon ratio as an assessment factor for the efficiency of silicate slags in wetland rice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Thoppil Sreenivasan Sandhya ◽  
Nagabovanalli Basavarajappa Prakash
Keyword(s):  
Silicon Content ◽  
Chemical Properties ◽  
Magnesium Content ◽  
Wetland Rice ◽  
Agronomic Efficiency ◽  
Economic Production ◽  
Incubation Experiments ◽  
Calcium And Magnesium ◽  
Si Content ◽  
Assessment Factor

AbstractSilicate slags are one of the most widely used silicon (Si) source in agriculture. Even though the agronomic significance of slags has been demonstrated in several crops, only a few attempts were made to evaluate these Si sources based on their chemical composition. The main objective of this study was to characterize different silicate slags based on their chemical properties and to explore the effect of these chemical properties on the yield, and Si uptake in wetland rice, and dissolution of Si into the soil. Slags were characterised for pH, calcium and magnesium content (alkalinity, A), silicon content, 5 day Na2CO3 + NH4NO3 extractable Si content, and alkalinity to Si ratio (A/Si). Greenhouse and incubation experiments were also conducted using different silicate slags and wollastonite applied at the rate of 300 kg Si ha−1. Slags with A/Si < 3 were found to be ideal Si sources for the economic production of wetland rice and found consistent in increasing soil Si content and rice Si uptake. We conclude that the A/Si ratio of slags can be used as an important parameter to assess the agronomic efficiency of silicate slags in wetland rice.

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