Yttrium aluminum perovskite (YAP) co-doped with CI3' and Nd3+ is of interest in laser applications because the chromium-neodymium energy transfer is more efficient in YAP than in YAG. Investigation of the energy transfer from the chromium R lines and pair states in the wavelength range 720-740 nm to the Nd3+ upper laser level shows that neither individual C? ions nor C?+-C? pairs are important ...

We studied the activities of several kinds of beta-glucans, including sonifilan, grifolan, Sclerotinia sclerotiorum glucan, laminarin and zymosan, on macrophages. Preculture of macrophages with inactive beta-glucans rendered the cells unresponsive to subsequent stimulation with grifolan, suggesting a specific pathway in the beta-glucan structure. The importance of protein C and phosphorylation ...

To clarify the biological activity of complement solubilized immune complexes, we studied their interaction with mouse peritoneal macrophages. The solubilized complexes lost their binding affinity for C3b receptor and Fc receptor but still bound to MPM mainly via the C3bi receptor (CR3). When solubilized immune complexes were injected into mice, they were more rapidly removed from the circulati...

???????? ???????????????????? ?????????? ? ??????? ?????? ??????? ????????? ? ??????? Cr3+ Cu2+ NO3H2O. ? ?????? ???????????? ??????? ????? (III), ?????????? ?? ??????? ???? (II), ???????????? ??????? ???????. ??? ???????? ????? ???????????? «?. ?.». ???????????? ????????? ??? ???????????? ????? ???????? 0,01 ????/?, ??????? ????????? C^+:Cu2+ = 1:1, ?????? ???? 0,3 ????/? (NaNO3), ??????????? ...

Coordination isomeric diastereomeric Cr3+ complexes of the pyoverdin of Pseudomonas aeruginosa ATCC 15692 could be separated by chromatography and characterized by spectroscopic methods.

Stumps and coarse roots form an important C pool nutrient in a Larix olgensis (Larix Henry) plantation ecosystem, their decomposition processes would affect cycling dynamics of the overall plantation. We studied release nutrients from stumps that were cleared 0, 6, 16, 26 33 years ago Northeast China. The divided into stump discs (SD), knots (SK), (>10 cm diameter) (CR1), medium-coarse (5–10...

Despite considerable research effort, the molecular mechanisms of Mycobacterium tuberculosis (Mtb) virulence remain unclear. Cholesterol oxidase (ChoD), an extracellular enzyme capable of converting cholesterol to its 3-keto-4-ene derivative, cholestenone, has been proposed to play a role in the virulence of Mtb. Here, we verified the hypothesis that ChoD is capable of modifying the bactericida...

In addition to alpha1,3 glucan, mannan and mannan-linked proteins are expressed in the outer layer of Paracoccidioides brasiliensis yeasts. The recognition of mannosyl residues by multiple pathogen recognition receptors, such as the mannose receptor (MR), complement receptor 3 (CR3) and toll-like receptor 4 (TLR4) on macrophage membranes can influence macrophage activation and the mechanisms of...

Complement (C) has two major effector systems available for host defense. The membrane attack complex (MAC) generated from components C5-C9 can form membrane-penetrating lesions that lead to cell death by causing a rapid loss of cytoplasmic components. The MAC is only effective against pathogens with outer phospholipid membranes, and cannot kill gram-positive bacteria or yeast whose membranes a...