Crystal Methamphetamines
... rate, blood sugar levels, bronchodilation Constriction of the walls of the arteries In pregnant and nursing women secreted in breast milk ...
... rate, blood sugar levels, bronchodilation Constriction of the walls of the arteries In pregnant and nursing women secreted in breast milk ...
Minerals and Formation
... from MAGMA or LAVA, Molten material is a liquid mixture of freely moving crystals. As molten material cools crystalline solids form. ...
... from MAGMA or LAVA, Molten material is a liquid mixture of freely moving crystals. As molten material cools crystalline solids form. ...
Anhydrous guanine: a synchrotron study
... different sites of protonation, N7 versus N9. Other bond lengths are very similar in the two structures. The difference in tautomeric form between the two structures is presumably a consequence of hydrogen bonding in the crystal structures. Fig. 2 shows the hydrogen bonding in the crystal structure ...
... different sites of protonation, N7 versus N9. Other bond lengths are very similar in the two structures. The difference in tautomeric form between the two structures is presumably a consequence of hydrogen bonding in the crystal structures. Fig. 2 shows the hydrogen bonding in the crystal structure ...
Synthesis, Growth and characterization of L-Histidine
... Hardness is one of the important mechanical properties of solid material. It can be used as a suitable measure of the plastic properties and strength of the material. Microhardness testing is one of the best methods of understanding the mechanical properties of materials such as fracture behavior, y ...
... Hardness is one of the important mechanical properties of solid material. It can be used as a suitable measure of the plastic properties and strength of the material. Microhardness testing is one of the best methods of understanding the mechanical properties of materials such as fracture behavior, y ...
What is a Mineral?
... shares three of its oxygen with other tetrahedra Framework silicates—form when each tetrahedron is bonded to four other tetrahedra ...
... shares three of its oxygen with other tetrahedra Framework silicates—form when each tetrahedron is bonded to four other tetrahedra ...
Chapter #3 -- The Structure of Crystalline Solids
... ¾ As we learned in Chapter 2, the atomic bonding in metals is non-directional ⇒ no restriction on numbers or positions of nearest-neighbor atoms ⇒ large number of nearest neighbors and dense atomic packing ¾ Atom (hard sphere) radius, R, defined by ion core ...
... ¾ As we learned in Chapter 2, the atomic bonding in metals is non-directional ⇒ no restriction on numbers or positions of nearest-neighbor atoms ⇒ large number of nearest neighbors and dense atomic packing ¾ Atom (hard sphere) radius, R, defined by ion core ...
Ring_Laser_crystal resonator
... Single-frequency, End-pumped Ring.) Features of this resonator are described below, and a schematic of a typical NPRO is given in Figure 5-2. ...
... Single-frequency, End-pumped Ring.) Features of this resonator are described below, and a schematic of a typical NPRO is given in Figure 5-2. ...
IOSR Journal of Applied Physics (IOSR-JAP)
... area of the resultant impression. Microhardness is a general microprobe technique for assessing the bond strength, apart being a measure of bulk strength. It is a measure of the material‟s resistance to local deformation caused by scattering or by indentation [30]. Microhardness studies were carried ...
... area of the resultant impression. Microhardness is a general microprobe technique for assessing the bond strength, apart being a measure of bulk strength. It is a measure of the material‟s resistance to local deformation caused by scattering or by indentation [30]. Microhardness studies were carried ...
The first urea azine molecule and its coordination to uranium
... endow a variety of metal complexes with interesting structures and reactions.1,2 A special attention has been paid to biguanidines and also, more recently, to bis-guanidines (Scheme 1) wherein both guanidine subunits are connected via either the Namine or Nimine atoms by an organic bridge; these bif ...
... endow a variety of metal complexes with interesting structures and reactions.1,2 A special attention has been paid to biguanidines and also, more recently, to bis-guanidines (Scheme 1) wherein both guanidine subunits are connected via either the Namine or Nimine atoms by an organic bridge; these bif ...
Topic A Guide
... X-ray diffraction can be used to analyse structures of metallic and ionic compounds. Crystal lattices contain simple repeating unit cells. Atoms on faces and edges of unit cells are shared. The number of nearest neighbours of an atom/ion is its coordination number. ...
... X-ray diffraction can be used to analyse structures of metallic and ionic compounds. Crystal lattices contain simple repeating unit cells. Atoms on faces and edges of unit cells are shared. The number of nearest neighbours of an atom/ion is its coordination number. ...
Optical Indicatrix - FAU-Department of Geosciences
... the isotropic indicatrix remains a sphere ...
... the isotropic indicatrix remains a sphere ...
Dislocations
... ● there is an interfacial or grain boundary energy similar to the surface energy just described. The magnitude of this energy depends on the degree of misorientation, being larger for high-angle boundaries. ● impurity atoms often preferentially segregate along these boundaries because of their highe ...
... ● there is an interfacial or grain boundary energy similar to the surface energy just described. The magnitude of this energy depends on the degree of misorientation, being larger for high-angle boundaries. ● impurity atoms often preferentially segregate along these boundaries because of their highe ...
0378.PDF
... compressed state by slippage or phase transformations. Often stacking faults are created which permit a simple detection of slippage. For a crystal it is rather easy to construct slip planes and stacking faults and to analyze them. This is not the case for quasicrystals. If geometric constructions a ...
... compressed state by slippage or phase transformations. Often stacking faults are created which permit a simple detection of slippage. For a crystal it is rather easy to construct slip planes and stacking faults and to analyze them. This is not the case for quasicrystals. If geometric constructions a ...
Crystal structure
In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms, ions or molecules in a crystalline liquid or solid. It describes a highly ordered structure, occurring due to the intrinsic nature of its constituents to form symmetric patterns.The crystal lattice can be thought of as an array of 'small boxes' infinitely repeating in all three spatial directions. Such a unit cell is the smallest unit of volume that contains all of the structural and symmetry information to build-up the macroscopic structure of the lattice by translation.Patterns are located upon the points of a lattice, which is an array of points repeating periodically in three dimensions. The lengths of the edges of a unit cell and the angles between them are called the lattice parameters. The symmetry properties of the crystal are embodied in its space group.A crystal's structure and symmetry play a role in determining many of its physical properties, such as cleavage, electronic band structure, and optical transparency.