The relationship between calcium content and aluminum and silicon content in uraemic rats

1989 ◽  
Vol 21 (4) ◽  
pp. 435-444 ◽  
Author(s):  
S. Hosokawa ◽  
O. Yoshida
Keyword(s):  
Silicon Content ◽  
Calcium Content ◽  
The Relationship

Silicon content of wheat husks in relation to water transpired

1974 ◽  
Vol 25 (2) ◽  
pp. 203 ◽  
Author(s):  
JT Hutton ◽  
K Norrish
Keyword(s):  
Silicon Content ◽  
Field Trials ◽  
The Relationship

The possibility of using the silicon content of wheat as a measure of transpiration in the field has been investigated. Silicon is concentrated in the husks, containing about one-third of the total silicon in the plant, and so the husks were used for most measurements. Samples, from field trials extending over several seasons and from a number of localities, showed that the percentage silicon (% Si) in the husks is closely related to water transpired. The equation, water used(cm) = 7.4+4.6(%Si) (r = 0. 99 , n = 8), should be applicable to most of the wheat-growing areas of southern Australia, but the addition of fertilizers, particularly nitrogen, modifies the equation. The relationship between weight of silicon in the tops and water transpired is consistent with the known solubility of Si(OH)4 in soils, but the correlation is poorer than that using percentage silicon.

On the oxidation resistance of superhard Ti–Si–C–N coatings

2008 ◽  
Vol 23 (9) ◽  
pp. 2420-2428 ◽  
Author(s):  
Yan Guo ◽  
Shengli Ma ◽  
Kewei Xu ◽  
Tom Bell ◽  
Xiaoying Li ◽  
...  
Keyword(s):  
Grain Size ◽  
Chemical Vapor Deposition ◽  
Oxidation Resistance ◽  
Vapor Deposition ◽  
Silicon Content ◽  
Oxidation Behavior ◽  
Oxidation Process ◽  
Chemical Vapor ◽  
Surface Morphologies ◽  
The Relationship

The oxidation behavior of three types of plasma-enhanced chemical vapor deposition (PECVD) processed Ti–Si–C–N coatings with silicon content ranging from 4.3 to 11.6 at.% has been investigated at high temperatures. Systematic characterization was conducted to study the evolution of composition, phase constituents, hardness, surface morphologies, microstructures, and grain size during oxidation. A two-stage oxidation process was observed between 700 and 1000 °C for all three coatings. Experimental results indicate that a superhardness of 40 GPa can be maintained up to 700, 800, and 850 °C for 4.3, 7.4, and 11.6 at.% Si coatings, respectively; the dual-phased 7.4 and 11.6 at.% Si coatings show a better oxidation resistance than the single-phased 4.3 at.% Si coating. On the basis of the results, a mechanism is proposed to explain the relationship between the nanostructure and oxidation behavior.

scholarly journals Analysis of Calcium Levels in Groundwater and Dental Caries in the Coastal Population of an Archipelago Country

2019 ◽  
Vol 7 (1) ◽  
pp. 134-138 ◽  
Author(s):  
Ristya Widi Endah Yani ◽  
Retno Palupi ◽  
Taufan Bramantoro ◽  
Darmawan Setijanto
Keyword(s):  
Dental Caries ◽  
Dental Health ◽  
Coastal Region ◽  
Calcium Content ◽  
Spearman Correlation ◽  
Cross Sectional ◽  
Minimum Age ◽  
Spearman Correlation Test ◽  
Living Organisms ◽  
The Relationship

BACKGROUND: The coastal region is the largest region in Indonesia as a country of the archipelago. Characteristics of groundwater content in coastal areas are very influential on dental health, especially dental caries. The main elements contained in 1-1000 mg/litre groundwater are calcium, magnesium, sodium, potassium, chlorine, bicarbonate, and sulfate groups. Calcium is an essential ingredient for living organisms that play a role in the formation of bone and tooth along with permeability of cell walls. AIM: This study aimed to analyse the relationship between calcium in groundwater with dental caries. METHOD: Analytical observational study with cross-sectional approach was implemented was coastal communities in Watu Ulo Jember Regency in February 2018 (3,686 inhabitants), with sample criteria of the minimum age of 12 years and consumed groundwater as drinking water at least 2 years by purposive side. The variables in this study were calcium levels as the independent variable and dental caries as the dependent variable. Calcium was measured using the spectrophotometric method. Caries measurements were performed using the DMF-T index. Data were presented descriptively in the table and analysed by Spearman Correlation test to analyze the relationship between groundwater calcium with dental caries. RESULTS: Average groundwater calcium content was 126.75 mg/litre (high category), and average dental caries was 2.2 (low category). Spearman correlation analysis showed p = 0.029 (p < 0.000), which means there was a correlation between groundwater calcium level with dental caries. CONCLUSION: There is a positive relationship between the calcium content of groundwater with dental caries.

Measurement of calcium content of gallstones by computed tomography and the relationship between gallbladder function and calcification of gallstones

1990 ◽  
Vol 25 (4) ◽  
pp. 478-484 ◽  
Author(s):  
Masashi Yoneda ◽  
Naoki Tamasawa ◽  
Isao Makino ◽  
Kazuo Takebe ◽  
Kiyoshi Sakuraba ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Calcium Content ◽  
Gallbladder Function ◽  
The Relationship

Discussion for the Calculation of Carbon Content and Heating Temperature in Austenitizing of Cast Iron

2014 ◽  
Vol 1028 ◽  
pp. 62-67 ◽  
Author(s):  
Wen Bang Gong ◽  
Yun Zhang ◽  
Huan Liu ◽  
Hua Fang Wang ◽  
Yu Qin Wu ◽  
...  
Keyword(s):  
Cast Iron ◽  
Carbon Content ◽  
Silicon Content ◽  
Heating Temperature ◽  
The Relationship

In this paper, a formula for calculation of carbon content during austenitizing of cast iron was developed with consideration of the effect of silicon content. According to this formula, carbon content of austenite at a certain austenization temperature for a cast iron with given composition can be easily calculated, and the austenization temperature for getting the expected carbon content in the austenite can also be determined. Besides, according to the relationship between austenization temperature Tx and the according carbon content Cax, and considering the effect of silicon content, the diagram of Cax, Tx and silicon content during the austenitizing process of cast iron was made.

Calcium nutrition in relation to the occurrence of internal browning in Brussels sprouts

1966 ◽  
Vol 17 (6) ◽  
pp. 863 ◽  
Author(s):  
CR Millikan ◽  
BC Hanger
Keyword(s):  
Calcium Content ◽  
Calcium Deficiency ◽  
Leaf Margin ◽  
Brussels Sprouts ◽  
Calcium Nutrition ◽  
Low Calcium ◽  
Internal Browning ◽  
The Relationship ◽  
Magnesium Treatment ◽  
Nutrient Solutions

Brussels sprouts, cv. Long Island, grown in sand cultures supplied with either normal or low-calcium nutrient solutions, were used to study the relationship between internal browning of sprouts and the calcium regime of the plants. The interaction of ammonium, magnesium, and potassium ions with calcium nutrition, and the susceptibility of four locally selected strains of Brussels sprouts to the disorder, were also investigated. No symptoms, in either the sprouts or the growing points, were found in plants grown under normal calcium nutrition, but each of the low-calcium treatments, irrespective of other cations, induced a significant amount of internal browning in sprouts. The incidence was greatest in the low-calcium high-magnesium, and least in the low-calcium high-ammonium treatments. Calcium deficiency symptoms of the growing points were most severe in the low-calcium high-magnesium treatment, and only this treatment significantly reduced plant yield. Internal browning occurred in the four strains when grown under the low-calcium high-magnesium treatment. Two strains (Bepi and original early) were more severely affected and developed symptoms earlier than the other two (Sartori and mid-season). However, the Sartori strain was the only one in which low calcium nutrition reduced yield. The calcium content in the sprouts decreased from the wrapper to the meristematic region. In leaves, the calcium content was highest in the leaf margin in all strains except mid-season. Low calcium nutrition greatly reduced the calcium content in sprouts and leaves.

scholarly journals A NEW METHOD OF DIAGNOSIS OF THE HIATAL HERNIA ASSOCIATED WITH GASTROESOPHAGEAL REFLUX DISEASE

2019 ◽  
Vol 72 (2) ◽  
pp. 186-188
Author(s):  
Andriy R. Stasyshyn ◽  
Mykola A. Bychkov ◽  
Solomiia V. Bychkova
Keyword(s):  
Gastroesophageal Reflux Disease ◽  
Gastroesophageal Reflux ◽  
Hiatal Hernia ◽  
Reflux Disease ◽  
Diagnostic Method ◽  
Calcium Content ◽  
Control Group ◽  
Non Invasive ◽  
The Relationship

Introduction: Gastroesophageal reflux disease (GERD) is one of the most common gastroduodenal diseases. The relationship between the hiatal hernia and the GERD is established. It is advisable to develop an accessible non-invasive diagnostic method for this combined pathology. The aim of the research was to estimate measuring of calcium in patients’ saliva samples as simple non-invasive diagnostic method of GERD associated with the hiatal hernia. Materials and methods: The samples of saliva were obtained from 37 patients with hiatal hernia associated with GERD and 22 healthy volunteers. The content of calcium in saliva was measured using calcium-sensitive dye Arsenazo III by photometrical method at a wavelength of 590-650 nm. Results: It has been established that in the saliva of patients with hiatal hernia, the calcium content was increased by 100.9% compared to the control group. Such a significant increase in the level of calcium in the saliva of patients with hiatal hernia may be due to the fact that the development of this pathology is a disorder of calcium homeostasis. Conclusions: It has been found that the calcium content in the saliva of patients with hiatal hernia exceeded the norm almost twice. Thus, the determination of calcium content in saliva can be used as a simple non-invasive diagnostic marker of hiatal hernia associated with GERD.

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