scholarly journals An Analysis of Relationship between the Microfracture Features and Mineral Morphology of Granite

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Meiben Gao ◽  
Tianbin Li ◽  
Junxun Zhu ◽  
Hongyu Yin ◽  
Yongyi Yang
Keyword(s):  
Quartz Crystal ◽  
X Ray Diffraction ◽  
Double Crystal ◽  
X Ray ◽  
Perfect Cleavage ◽  
Flake Structure ◽  
Main Components ◽  
External Forces ◽  
Transgranular Cracks ◽  
Granite Samples

Using the techniques of X-ray diffraction, polarizing microscopy, uniaxial compression, and scanning electron microscopy (SEM), the relationships between the microfracture features and mineral morphology of granite were studied. The results showed that feldspar, quartz, and biotite are the main components of the granite samples in this study. Biotite has a self-shaped flake structure with perfect cleavage. K-feldspar has a lattice double crystal structure with two groups of cleavage. Plagioclase has a semi-self-shaped plate structure with two groups of cleavage. Quartz is prismatic or granular and exhibits noncleavage. The microfracture features of biotite are flaky with exfoliation, and flake cleavage fracture is mainly determined by its peculiar flaky cleavage. Feldspar (K-feldspar and plagioclase) is plate, layered, or two groups of cleavage and is also mainly determined by its peculiar two groups of cleavage. The microfracture features of quartz are highly irregular, with many randomly distributed intergranular and transgranular cracks, small particles or granule bulges, similar to quartz crystal, and this is due to the noncleavage feature of quartz itself. It is demonstrated that microfractures are preferentially ruptured along cleavage planes for these granite minerals under the action of external forces.

Electron Microscopy of Human Gallstones

1971 ◽  
Vol 29 ◽  
pp. 296-297
Author(s):  
C. Wolpers ◽  
R. Blaschke
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bile Pigment ◽  
X Ray Diffraction ◽  
Triclinic Crystal System ◽  
X Ray ◽  
Follow Up Study ◽  
Infra Red ◽  
Main Components

Scanning microscopy was used to study the surface of human gallstones and the surface of fractures. The specimens were obtained by operation, washed with water, dried at room temperature and shadowcasted with carbon and aluminum. Most of the specimens belong to patients from a series of X-ray follow-up study, examined during the last twenty years. So it was possible to evaluate approximately the age of these gallstones and to get information on the intensity of growing and solving.Cholesterol, a group of bile pigment substances and different salts of calcium, are the main components of human gallstones. By X-ray diffraction technique, infra-red spectroscopy and by chemical analysis it was demonstrated that all three components can be found in any gallstone. In the presence of water cholesterol crystallizes in pane-like plates of the triclinic crystal system.

Leaching Studies of Cement-Glass Package Containing Sodium Borate

1986 ◽  
Vol 84 ◽  
Author(s):  
Masahiro Okamoto ◽  
Koichi Chino ◽  
Tsutomu Baba ◽  
Tatsuo Izumida ◽  
Fumio Kawamura ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
Liquid Waste ◽  
Sodium Borate ◽  
Pressurized Water Reactor ◽  
X Ray Diffraction ◽  
Adsorption Ability ◽  
Pressurized Water ◽  
X Ray ◽  
Solidification Reaction ◽  
Main Components

AbstractA new solidification technique using cement-glass, which is a mixture of sodium silicate, cement, additives, and initiator of the solidification reaction, was developed for sodium borate liquid waste generated from pressurized water reactor (PWR) plants. The cement-glass could solidify eight times as much sodium borate as cement could, because the solidifying reaction of the cement-glass is not hindered by borate ions.The reaction mechanism of sodium silicate and phosphoric silicate (initiator), the main components of cement-glass, was studied through X-ray diffraction and compressive strength measurements. It was found that three- dimensionally bonded silicon dioxide was produced by polymerization of the two silicates. The leaching ratio of cesium from the cement-glass package was one-tenth that of the cement one. This low value was attributed to a high cesium adsorption ability of the cement-glass and it could be theoretically predicted accordingly.

Double-Crystal x-Ray Diffraction Study on Ta/Al Multilayers

1992 ◽  
Vol 9 (11) ◽  
pp. 605-608
Author(s):  
Xiu Lisong ◽  
Yuan Xiangyang ◽  
Wu Ziqin ◽  
Jiang Shusheng ◽  
Hu An ◽  
...  
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
Double Crystal ◽  
X Ray

Study of various types of diamonds by measurements of double crystal x‐ray diffraction and positron annihilation

1995 ◽  
Vol 78 (3) ◽  
pp. 1510-1513 ◽  
Author(s):  
S. Fujii ◽  
Y. Nishibayashi ◽  
S. Shikata ◽  
A. Uedono ◽  
S. Tanigawa
Keyword(s):  
Positron Annihilation ◽  
X Ray Diffraction ◽  
Double Crystal ◽  
X Ray

Strain relaxation studied by photoluminescence and by double crystal X-ray diffraction measurements in strained InGaAs

1994 ◽  
Vol 22 (2-3) ◽  
pp. 222-226 ◽  
Author(s):  
A. Tabata ◽  
T. Benyattou ◽  
G. Guillot ◽  
S.A. Clark ◽  
J.E. Macdonald ◽  
...  
Keyword(s):  
Strain Relaxation ◽  
X Ray Diffraction ◽  
Double Crystal ◽  
X Ray

scholarly journals Intercalation of solvated Na-ions into graphite

2017 ◽  
Vol 10 (7) ◽  
pp. 1631-1642 ◽  
Author(s):  
L. Seidl ◽  
N. Bucher ◽  
E. Chu ◽  
S. Hartung ◽  
S. Martens ◽  
...  
Keyword(s):  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Electrochemical Quartz Crystal Microbalance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Graphite Intercalation ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Na Ions ◽  
In Operando

The reversible intercalation of solvated Na-ions into graphite and the concomitant formation of ternary Na–graphite intercalation compounds (GICs) are studied using several in operando techniques, such as X-ray-diffraction (XRD), electrochemical scanning tunnelling microscopy (EC-STM) and the electrochemical quartz crystal microbalance technique (EQCM).

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