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Vibrio biofilms: so much the same yet so different.

Vibrios are natural inhabitants of aquatic environments and form symbiotic or pathogenic relationships with eukaryotic hosts. Recent studies reveal that the ability of vibrios to form biofilms (i.e. matrix-enclosed, surface-associated communities) depends upon specific structural genes (flagella, pili and exopolysaccharide biosynthesis) and regulatory processes (two-component regulators, quorum...

ویژگی های هندسی فضای همگن so(n)so(n,1)

برگروه لی‎$ g=so_{0}(n,1) $‎، یک متریک ناوردای چپ تعریف می شود که از فرم کیلینگ-کارتان بدست می آید. زیرگروه فشرده همبند بیشین آن عبارت است از ‎$ so(n)=so(n) imeslbrace 1 brace $‎که با‎$ k $‎ نمایش می دهیم.گروه طولپایی های‎$ g $‎ عبارت است از ‎egin{equation*}‎ ‎isom_{0}(g)=g imes k‎, ‎end{equation*}‎ یعنی ضرب چپ توسط عضو های‎$ g $‎ و ضرب راست توسط عضو های ‎$ k $.‎ بنابراین، دو عمل برای ‎$ k...

($phi,rho$)-Representation of $Gamma$-So-Rings

A $Gamma$-so-ring is a structure possessing a natural partial ordering, an infinitary partial addition and a ternary multiplication, subject to a set of axioms. The partial functions under disjoint-domain sums and functional composition is a $Gamma$-so-ring. In this paper we introduce the notions of subdirect product and $(phi,rho)$-product of $Gamma$-so-rings and study $(phi,rho)$-represen...

So Many WAM Variations, So Little Time

Pulmonary hypertension in patients with sickle cell disease: not so frequent but so different.

U ntil recently, the prevalence and characteristics of pulmonary hypertension (PH) in adults with sickle cell disease remained uncertain. In previous studies, the prevalence of PH, as defined by a tricuspid valve regurgitant jet velocity (TRJV) of o2.5 m?s, has been reported as high as 30% [1, 2]. However, in these studies, the diagnosis of PH was not systematically confirmed on right heart cat...