This study intended to examine the effect of 3,4-dihydroxyphenyl lactic acid (DLA), a major ingredient of Salvia miltiorrhiza, on lipopolysaccahride (LPS) -induced mouse cerebral cortical microcirculatory disturbance. Velocity of red blood cells in, and albumin leakage from venules, and the numbers of leukocytes rolling on, and adherent to the venular wall were determined by an up-right microsc...

Diffusion limited aggregation (DLA) is a modelling technique for simulating dendritic growth that has seen widespread application in the physical, biological, and social sciences. We introduce an artistic component to the basic technique by adding special effects parameters to a single particle, random walk DLA aggregation scheme. Our goal is to explore the potential of the enhanced scheme as a...

3,4-dihydroxy-phenyl lactic acid (DLA) and salvianolic acid B (SAB) are two major water-soluble components of Salvia miltiorrhiza (SM). Previous works have revealed the ability of DLA and SAB to scavenge oxygen free radicals, inhibiting the expression of adhesion molecules CD11b/CD18 in neutrophil. Cardiotonic pills (CP), which is a traditional Chinese medicine compound preparation containing D...

We use deep HST STIS and NICMOS images of three spectroscopically confirmed galaxy counterparts of high-redshift damped Lyα (DLA) absorbers (one of which is a new discovery) to test the hypothesis that high-redshift DLA galaxies are Lyman-break galaxies. If this hypothesis is correct the emission properties of DLA galaxies must lie within the range of emission properties measured for Lyman-brea...

The aim of the present work was to synthesise coumarinyl heterocycles and to elucidate the potential role of these compounds as antioxidants and cytotoxic agents against Dalton's lymphoma ascites tumour cells (DLA) and Ehrlich ascites carcinoma cells (EAC). The synthesis of coumarin derivatives containing pyrazole, pyrazolone, thiazolidin-4-one, 5-carboxymethyl-4-thiazolidinone and 3-acetyl-1,3...

The main properties of Damped Lyman alpha (DLA) systems are briefly reviewed with the aim of studying the nature and evolution of the galaxies associated with this class of QSO absorbers. Candidate DLA galaxies identified at z ≤ 1 in the fields of background QSOs show a variety of morphological types without a predominance of spirals. Most properties inferred from spectroscopic studies at z ≥ 1...

We present results from an efficient, non-traditional survey to discover damped Lyα (DLA) absorption systems with neutral hydrogen column densities NHI ≥ 2 × 10 atoms cm and redshifts z < 1.65. In the past, identification of DLA systems at z < 1.65 has been difficult due to their rare incidence and the need for UV spectroscopy to detect Lyα absorption at these low redshifts. Our survey relies o...

We used our database of VLT-UVES quasar spectra to build up a sample of 70 Damped Lyman-α (DLA) or strong sub-DLA systems with total neutral hydrogen column densities of log N(H ) > ∼ 20 and redshifts in the range 1.7 < z abs < 4.3. For each of the systems, we measured in an homogeneous manner the metallicities relative to Solar, [X/H] (with X = Zn, or S or Si), and the velocity widths of low-...

The modulatory effects of lipid A (diphosphoryl lipid A (DLA) and monophosphoryl lipid A (MLA)) on apoptosis induction and DNA structure damage (singleand double-strand breaks (SSBs and DSBs, respectively)) in peripheral human blood lymphocytes are studied for Co gamma irradiation. It is shown that in the presence of these agents the number of apoptotic cells increases compared with the irradia...