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Scanning electron micrograph of the surface of a kidney stone showing tetragonal crystals of weddellite (calcium oxalate dihydrate) emerging from the amorphous central part of the stone (the horizontal length of the picture represents 0.5 mm of the figured original) Multiple kidney stones composed of uric acid and a small amount of calcium ...
Calcium oxalate is a combination of calcium ions and the conjugate base of oxalic acid, the oxalate anion. Its aqueous solutions are slightly basic because of the basicity of the oxalate ion. The basicity of calcium oxalate is weaker than that of sodium oxalate, due to its lower solubility in water.
An account of the early history of scanning electron microscopy has been presented by McMullan. [2] [3] Although Max Knoll produced a photo with a 50 mm object-field-width showing channeling contrast by the use of an electron beam scanner, [4] it was Manfred von Ardenne who in 1937 invented [5] a microscope with high resolution by scanning a very small raster with a demagnified and finely ...
Nephrocalcinosis, once known as Albright's calcinosis after Fuller Albright, is a term originally used to describe the deposition of poorly soluble calcium salts in the renal parenchyma due to hyperparathyroidism. The term nephrocalcinosis is used to describe the deposition of both calcium oxalate and calcium phosphate. [1]
Calcium imaging is a microscopy technique to optically measure the calcium (Ca 2+) status of an isolated cell, tissue or medium.Calcium imaging takes advantage of calcium indicators, fluorescent molecules that respond to the binding of Ca 2+ ions by fluorescence properties.
Histopathology of calcium oxalate crystals in a benign breast cyst, H&E stain. In contrast to an artifact of crowded cells, the DCIS calcification pictured above characteristically extends outside the focal plane, as the background DCIS is blurred in this focus.
CT scan of chest, abdomen, and pelvis CTD: connective tissue disease: CTE: chronic traumatic encephalopathy coefficient of thermal expansion: CTEPH: Chronic thromboembolic pulmonary hypertension: CTO: chronic total occlusion Community Treatment Order (psychiatric term for forced drugging outside hospital context) CTP: cytosine triphosphate ...
Two-dimensional raster scan information can be compiled to generate images of surface reactivity and chemical kinetics. The technique is complementary to other surface characterization methods such as surface plasmon resonance (SPR), [ 8 ] electrochemical scanning tunneling microscopy (ESTM), [ 9 ] and atomic force microscopy (AFM) [ 10 ] in ...