Knoop microhardness studies of urinary calculi and pure calcium oxalate monohydrate crystals

被引：9

作者：

Girija, EK

Sivakumar, GR

Kalkura, SN

Ramasamy, P ^{[1
]}

Joshi, DR

Sivaraman, PB

机构：

[1] Anna Univ, Ctr Crystal Growth, Chennai 600025, India

[2] Maharaja Sayajirao Univ Baroda, Dept Appl Phys, Baroda 390002, Gujarat, India

[3] Madras Med Coll, Dept Urol, Chennai 600001, India

[4] Deemed Univ, Chennai 600001, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2000年 / 63卷 / 01期

关键词：

urinary calculi; Knoop microhardness; calcium oxalate;

D O I：

10.1016/S0254-0584(99)00204-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Knoop microhardness studies were carried out on urinary calculi and synthesized calcium oxalate monohydrate (COM) crystals. COM calculi showed a higher value of microhardness than the synthesized crystals. Calcium oxalate dihydrate (COD) and uric acid (UA) stones showed microhardness values close to that of COM. In the case of mixed stones, the stone with COM showed higher hardness value than the stone with COD component. The presence of calcium phosphate (hydroxyapatite, HAP) in the mixed stones did not contribute in anyway to the overall hardness of the stones. The variation of microhardness with the orientation of COM calculi showed a cyclic pattern indicating the presence of alternate layers of crystalline and matrix materials. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：50 / 54

页数：5

共 16 条

[1] A STUDY OF MICROHARDNESS OF RENAL CALCULI BY A KNOOP METHOD [J].