Furthermore, a recent reduction in logging has led to an even closer packing together of trees.
|
|
The artists start by packing together an extremely hard block of sand and then shaping the sculpture out of it.
|
|
Their new record Welcome the Worms is a take-once-daily cure for boredom, packing together unbridled catchiness and witty lyrics.
|
|
By packing together highly reliable blocks of Democratic voters, the reasoning goes, the new districts "bleached" surrounding districts —made them whiter and more Republican.
|
|
In the works done between 1949 and 1960, his different approaches to drawing recall the angularities of Yasuo Kuniyoshi and the rhythmic packing together of marks found in Philip Guston.
|
|
In contrast, sequences in the same family align well throughout the alignment. ;Supersecondary structure: a term with similar meaning to a structural motif. Tertiary structure is the three-dimensional or globular structure formed by the packing together or folding of secondary structures of a polypeptide chain.
|
|
Structures are known which exceed the close packing density for radius ratios up to 0.659786. Upper bounds for the density that can be obtained in such binary packings have also been obtained. In many chemical situations such as ionic crystals, the stoichiometry is constrained by the charges of the constituent ions. This additional constraint on the packing, together with the need to minimize the Coulomb energy of interacting charges leads to a diversity of optimal packing arrangements.
|
|
" TouchArcade's Eli Hodapp scored it 5 out of 5 and called it a game "you simply must own." Carter Dobson of 148Apps also scored it 5 out of 5, calling it "one of the best endless games on the App Store." AppSpy's Andrew Nesvadba also awarded a score of 5 out of 5, writing "While touch-to-fly style endless games are nothing new, Jetpack Joyride trumps them all by packing together gorgeous designs with fun gameplay and replay value that's bursting at the seams." AppSmile cited it as "a terrific example of iDevice gaming done just right.
|
|
Fatty acids may be saturated or unsaturated, with the configuration of the double bonds nearly always "cis". The length and the degree of unsaturation of fatty acid chains have a profound effect on membrane fluidity as unsaturated lipids create a kink, preventing the fatty acids from packing together as tightly, thus decreasing the melting temperature (increasing the fluidity) of the membrane. The ability of some organisms to regulate the fluidity of their cell membranes by altering lipid composition is called homeoviscous adaptation. The entire membrane is held together via non-covalent interaction of hydrophobic tails, however the structure is quite fluid and not fixed rigidly in place.
|
|
These specific properties allow phospholipids to play an important role in the cell membrane. Their movement can be described by the fluid mosaic model, that describes the membrane as a mosaic of lipid molecules that act as a solvent for all the substances and proteins within it, so proteins and lipid molecules are then free to diffuse laterally through the lipid matrix and migrate over the membrane. Sterols contribute to membrane fluidity by hindering the packing together of phospholipids. However, this model has now been superseded, as through the study of lipid polymorphism it is now known that the behaviour of lipids under physiological (and other) conditions is not simple.
|
|
The hcp lattice (left) and the fcc lattice (right) The principles involved can be understood by considering the most efficient way of packing together equal- sized spheres and stacking close-packed atomic planes in three dimensions. For example, if plane A lies beneath plane B, there are two possible ways of placing an additional atom on top of layer B. If an additional layer was placed directly over plane A, this would give rise to the following series: :...ABABABAB... This arrangement of atoms in a crystal structure is known as hexagonal close packing (hcp). If, however, all three planes are staggered relative to each other and it is not until the fourth layer is positioned directly over plane A that the sequence is repeated, then the following sequence arises: :...ABCABCABC... This type of structural arrangement is known as cubic close packing (ccp). The unit cell of a ccp arrangement of atoms is the face-centered cubic (fcc) unit cell.
|
|