báo cáo khoa học: "Population genetics and the Cretaceous extinction " potx

... survival or extinction in the Cretaceous extinction appear to be mutation rate (exposure) and secondarily, popula- tion size, and these have applied also to previous and subsequent ... de- pended. Although the geomagnetic reversal pattern is proposed to be the proximal cause leading to the Cretaceous mass extinction and may also be...

Ngày tải lên: 09/08/2014, 22:22

... positively and significantly correlated with the total rainfall of the months both concurrent with and previous to the time of collection.

Ngày tải lên: 09/08/2014, 22:23

... G UYOMARD & K RIEG , 1983).

Ngày tải lên: 09/08/2014, 22:23

... 6060–6066 ª 2008 The Authors Journal compilation ª 2008 FEBS Diarrheic shellfish toxins and cell adhesion The adherence of cells to each other and to the elabo- rate mesh that comprises the extracellular ... induced by C. Vale and L. M. Botana DSPs and the cytoskeleton FEBS Journal 275 (2008) 6060–6066 ª 2008 The Authors Journal compilation ª 2008 FEBS 6065 MINIREVIEW Marin...

Ngày tải lên: 18/02/2014, 14:20

... K + -ATPase is also the specific target for heart glycosides such as ouabain, which bind to the pump and block it when the Na + -binding sites are open to the extracellular side [10]. Nevertheless, paly- toxin ... constitute the actin cytoskeleton [13]. For a long time, it was believed that the role of this system was mainly structural, providing the sup- port needed to maintai...

Ngày tải lên: 18/02/2014, 14:20

... rotundata and Dinophysis acuta [1–3,6,10–13]. After consumption of the algae by the shellfish, PTX-2 can be metabolized to other PTX derivatives. In the digestive gland of the scallop P. yessoensis, the ... PTX-11 has the same LD 50 for mice as PTX-2 [17]. On the other hand, rupture of the lactone ring inac- tivates the PTX molecule [23,28]. Although preliminary studies ind...

Ngày tải lên: 18/02/2014, 14:20

... for the b and c crystallin families. In mouse it seems that cN and cS have distinct pat- terns of expression in the eye, with cS in the epithe- lium and secondary fibers of the lens, the cornea and retinal ... man [8,9]. In the verteb- rate lens, the b and c crystallins together account for the majority of the soluble proteins (the other major family being the a-...

Ngày tải lên: 19/02/2014, 17:20

... lower affinity for both the substrate and the product. In the course of the catalytic cycle the conformation of the subunits alternates between two states in order to enable substrate binding and product ... to the Ser102 conformation and the nature of the metal ion bound to the M3 site [10]. The APaseP i structure displays an increased mobility of the active site...

Ngày tải lên: 21/02/2014, 00:20

... Panaceas existed only in legends and the dreams of sorcerers and healers, and they were scorned in the famous comedy of Molie ` re, Le Malade Imaginaire, where the candidate physicians would advocate ... elevated pH and ionic strengths and organic solvents used to elicit complex formation with cell ⁄ tissue lysates and subse- quent elution from the beads. The initial art...

Ngày tải lên: 07/03/2014, 10:20

... elements are gathered together in pairs, namely: (all (the (old (men (on the corner) ) ) ) ) , (all (the ((old men) (on the corner)))), (all ( (the (old men)) (on the corner))), ((all (the (old ... fully and consistently, it greatly increases the length and complexity of both the codes and the rules, and this may also be a source of problems in storage and pro...

Ngày tải lên: 07/03/2014, 18:20