a number of 3-amino-1, 2, 4-triazin-5 (2h)- ones(1) were synthesized and condensed with a-haloketones to give 2,6-disubstituted imidazo [1, 2-b] [1, 2, 4]-triazin-3 (4h)-ones (2). these compounds were reacted further with a - haloketones to yield n-alkylated products (3).

5(6)-carboxy-rhodamine 110 isomers were rapidly synthesized by condensation of 3-aminophenol and trimellitic anhydride using microwave irradiation as heating method. after esterification of the two isomers, separation and hydrolyzation provided target products,5-carboxy-rhodamine 110 and 6-carboxy-rhodamine 110, in high yields. the results shows microwave irradiation can effectively reduce the ...

the morphology of retinal photoreceptor layer was studied in continuous light-exposed and dark-adapteddomestic male cats (felis catus). the eyes of 12 healthy adult cats (4 in continuous light-exposed group, 4 in continuous dark-adapted group, and 4 in control group) were routinely fixed and studied by electron microscope. results showed that the general structure of photoreceptor layer in this...

The presence of the procyanidins epicatechin-( 4j3-8)-catechin. epicatechin..{ 4j3-6)-catechin. catechin( 4a-8)-catechin. epicatechin-( 4j3-8 >-epicatechin-( 4j3-8)-epicatechin-{ 4138)-catechin. and epicatechin-(4j3-8)-epicatechin-(4j3-6)catechin in tile phloem of PillU.f raeda demonstrated heterogeneity in the location of the interftavanoid bonds in oligomeric pro...

Nonviral delivery vectors are attractive for gene therapy approaches in tissue engineering, but suffer from low transfection efficiency and short-term gene expression. We hypothesized that the sustained delivery of poly(ethylenimine) (PEI)-condensed DNA from three-dimensional biodegradable scaffolds that encourage cell infiltration could greatly enhance gene expression. To test this hypothesis,...

the nutritive values of honey locust pods obtained from different growing sites were evaluated by chemical composition and in vitro gas production techniques. growing site was found to have a significant (p< 0.001) effect on the chemical composition. the cp contents of honey locust pods ranged from 67.2 to 119.9 g kg-1 dm. water soluble carbohydrate (wsc) ranged from 122.3 to 152.2 g kg-1 dm. n...