the self-made tapestry pattern formation in nature jan 1999

... example, the small imperfections or bumps on a shell) are averaged out. To explain how the form of the shell arises, there is no point in trying to explain all the hide bumps, since these will ... or the right), but this instability sets in only when the speed falls below a certain threshold. Two common aspects of pattern- forming instabilities are that they involve symmet...

Ngày tải lên: 11/06/2014, 10:20

... y 0 + a 1+  x x 0  b (1) The four parameters are the following: y 0 indicates the minimum concentration of the respective nutrient or mycotoxin; a indicates the maximum nutrient/myco- toxin concentration; x 0 indicates ... was operated in the small-s cale bioreactor (vessel volume 2.0 L) Minifors (Infors, Bott- mingen, Switzerland) for the indicated time period at 28°C in...

Ngày tải lên: 20/06/2014, 23:20

... 0.15 in the US and 0.20 in Japan. This is consistent with the interpretation of the results in chapter 7 concerning the class identities of married women in the labor force in Sweden and the United States: ... interpretation of the age coef®cient, then such generational cleavages in ideology appear stronger in the US than in the other two countries, perhaps i...

Ngày tải lên: 01/11/2013, 07:20

... isomer of the Hex3 glycoform (estimated from the intensity of the fragments in MS 2 experiments). b Minor isomer of the Hex3 glycoform (estimated from the intensity of the fragments in MS 2 experiments). Fig. ... has indicated the presence of a phosphate group in several other strains [12–14], but, owing to the low abundance of the phosphate-containing glycoforms, its...

Ngày tải lên: 08/03/2014, 02:21

... peroxidase containing cells lying in the ectoderm of the foot. The diaminobenzidine- stained granules are localized mainly in the apical part of the foot mucous cells as indicated by the arrow in (B). ... indicate the stained bands in the gel. I is the major peroxidase activity of hydra residing in the foot of the animal, II indicates another peroxidase activit...

Ngày tải lên: 08/03/2014, 10:20

... ischemic stroke without increasing the risk of intracranial hem- orrhage [43]. Altogether, targeting the vWF-binding domain, in addition to GPVI and integrin a2b1 bind- ing sites in collagen appears ... panel). Aegyptin binds with high affinity to the vWF binding site in collagen, independently of hydroxyproline In an attempt to identify the binding sites involved in collagen...

Ngày tải lên: 22/03/2014, 21:20

... tubulin depends mainly on the relative activities of the acetylating and deacetylating enzymes rather than on microtubule dynamics. Tyrosination ⁄ detyrosination at the COOH-terminus of a-tubulin ... isotypes of tubulin exist: tyrosinated (Tyr-tubulin), detyrosinated (Glu- tubulin), and Delta2 (a-tubulin lacking the two COOH-terminal amino acids). Glu-tubulin and Delta2- tubulin have...

Ngày tải lên: 23/03/2014, 05:22

... role of the crosslink in determining the Soret spectrum. Although catalytic activity was lost in the mutants, the ligand-binding capability and thus the penta- coordinate nature of the heme was conserved. ... fragments from the wild-type protein is in keeping with an apparent heme lability imparted by the crosslink to lysine in the wild-type protein [10]. Fragments...

Ngày tải lên: 23/03/2014, 17:21