X-ray tomography is a powerful tool giving access to the morphology of biofilms, in 3D porous media, at the mesoscale. Due to the high water content of biofilms, the attenuation coefficient of biofilms and water are very close, hindering the distinction between biofilms and water without the use of contrast agents. Until now, the use of contrast agents such as barium sulfate, silver-coated micr...

Bis(1,4-diamino-1,2,4-triazolium) sulfate (1) was obtained from the corresponding chloride by ion metathesis using Ag2SO4. Further metathesis with barium 5,51-azotetrazolate yielded bis(1,4-diamino-1,2,4-triazolium) 5,51-azotetrazolate (2). Numerous NH ̈ ̈ ̈N and NH ̈ ̈ ̈O interactions were identified in the crystal structures of 1 and 2. Both compounds undergo exothermal decomposition upon heating.

This paper describes the results of experiments on magnetization barium hexaferrite particles embedded in lyotropic liquid crystals. The carrier crystal medium was an aqueous solution a mixture sodium lauryl sulfate and lauric acid ratio 2/1. Barium were stabilized with two layers surfactant. first layer consisted oleic molecules. Second mix 1/1. process particle investigated by observing effec...

BACKGROUND AND AIMS Radiography is used to diagnose the demineralization process and carious lesions; however, conventional radiography and direct digital images do not show these lesions when the amount of demineralization is less than 40%. Digital subtraction radiography has recently been used to improve the diagnostic quality of these le-sions. The purpose of this study was to compare the ca...

1. A method is described for the simultaneous isolation of both Factor X and prothrombin from bovine plasma. The proteins are adsorbed on and eluted from barium sulphate and chromatographed on DEAE-Sephadex and are finally purified by rechromatography on DEAE-Sephadex. 2. The proteins can be purified in 48h from the collection of the blood and the method can be used to process large volumes of ...

Reticuloendothelial clearance of carbon particles is inhibited by injection of heat-aggregated albumin. The possibility that this inhibition might involve a serum component has been explored. Evidence that such a serum factor does participate in carbon clearance inhibition by heat-aggregated albumin derives from the fact that prior treatment of the carbon with homologous serum eliminates the bl...

The paper presents the investigations on absorbability of ferri/ferrous impurities found in commercial grade sodium sulphide. The later product is unsuitable for the manufacture of pharmaceutical grade chemicals and dyes chemicals.The author have carried out experiments on the use of precipated barium sulphate as an adsorbent in different propotions in the aqueous solution of commercial grade s...

SUMMARY. The timed barium esophagogram (TBE) is a further development of the barium swallow, introducing functional and dynamic dimensions to the assessment. The purpose of our study was to assess the day to day variability of TBE parameters when scored in healthy subjects, in untreated and in previously treated patients with confirmed diagnoses of achalasia and to assess the intra- and interob...

A 41-year-old man presented to our hospital with lower abdominal pain and a high-grade fever. Physical examination revealed rebound tenderness and guarding in the lower abdomen. Abdominal X-ray examination showed a radiopaque object in the right lower quadrant of the abdomen. Abdominal computed tomography (CT) demonstrated that the object had a strong artifact with over 10,000 Hounsfield units,...