Suaeda salsa community is a vegetation type in saline-alkali areas. Weed invasion and colonization in S. salsa communities lead to fragmentationsof S. salsa communities. The colonization of invaded weeds in S. salsa communities is related to community succession of saline-alkali zones. The fragmented S. salsa community may be restored if the mechanism of invaded weed colonization in S. salsa co...

Salt marshes are among the most productive ecosystems in the world, performing important ecosystem functions, particularly nutrient recycling. In this study, a comparison is made between Mondego and Tagus estuaries in relation to the role of Spartina maritima in nitrogen retention capacity and cycling. Two mono-specific S. maritima stands per estuary were studied during 1yr (biomass, nitrogen (...

Selectively outbred Dahl salt-sensitive (DS) and salt-resistant (DR) rats were compared with the inbred Dahl salt-sensitive (SS/Jr) and salt-resistant (SR/Jr) rats developed from the original Brookhaven stocks by J.P. Rapp. The animals were evaluated for genotype at the renin locus. The inbred strains are uniformly homozygous for their respective alleles, s in SS/Jr and r in SR/Jr. DR rats were...

The epithelial sodium channel [ENaC] is critical for the maintenance of sodium balance, extracellular fluid volume and long term blood pressure control. Monogenic disorders causing ENaC hyperactivity have led to a severe form of hereditary hypertension in humans, known as Liddle's syndrome. Similarly, in animal models, ENaC hyperactivity has been well documented in kidneys of salt-sensitive [S]...

The 1:1 and 1:2 phases (TTM -TTF)Br, and (TTM -TTF)(Br3)2, TTM-TTF = tetra(methylthio)tetrathiafulvalene, C UIH 12S8, have been crystallized by diffusion of bromine vapour into solutions of the donor. The 1:1 salt is monoclinic, P 2xln, a = 7 .587(2), b = 11.424(3), c = 23.145(8) Ä , ß = 95.80(3)°, V = 1997 Ä 3, Z = 4, Mr = 628.45, dc = 2.09 g e m '3, final Rw = 0.028 for 912 reflections. The 1...

-A new general method for the preparation of 2-alkyl-pipecolic acids has been developed. The syntheses of 2-methyl-, 2-benzyland cis-6-methylpipecolic acids are described. ( ) S and (+)R-2-methylpipecolic acids were resolved by fractional crystallization of the quinine salt of their N-carbobenzoxy derivative. Isolation of (-)S-cis-6-methylpipecolic acid required the use of 4-phenylbenzyloxycarb...

Department of Geography, University of Victoria, Box 1700, Stn CSC, Victoria, British Columbia, Canada V8 W 2Y2 Raincoast Conservation Foundation, General Delivery, Denny Island, British Columbia, Canada V0T 1B0 Hakai Institute, Box 309, Heriot Bay, British Columbia, Canada V0P 1H0 Department of Anthropology, University of Utah, 270 S. 1400 E., Salt Lake City, UT 84112, USA Global Change and Su...

The aim of the investigation is to validate the potential of SAS crystallization process to resolve racemic ibuprofen. The resolution is performed via diastereomic salt formation and subsequent salt precipitation in a supercritical CO2 environment. Firstly, the operating conditions, using (S)-α-methylbenzylamine as resolving agent, were optimized. Secondly, the measurement of the binary phase d...

The study of salt-sensitive hypertension has been facilitated by development of genetic models, especially the Dahl/Rapp salt-sensitive (S) rat. S rats rapidly become hypertensive after initiation of a diet containing 8.0% NaCl and subsequently develop arteriolonephrosclerosis and renal failure, whereas the salt-resistant (R) strain remains normotensive on the same diet. The purpose of the pres...

The study of salt-sensitive hypertension has been facilitated by development of genetic models, especially the Dahl/Rapp salt-sensitive (S) rat. S rats rapidly become hypertensive after initiation of a diet containing 8.0% NaCl and subsequently develop arteriolonephrosclerosis and renal failure, while the salt-resistant (R) strain remains normotensive on the same diet. The purpose of the presen...