thionyl chloride (or oxalyl chloride) has been used as an efficient and cheap acid activator for one-pot synthesis of β-lactams in good to excellent yields by reaction between imines and acids in the presence of triethylamine at room temperature.

acquired azole resistance in opportunistic fungi causes severe clinical problems in immunosuppressed individuals. this study investigated the molecular mechanisms of azole resistance in clinical isolates of candida glabrata . six unmatched strains were obtained from an epidemiological survey of candidiasis in immunocompromised hosts that included azole and amphotericin b susceptible and azole r...

Quorum sensing controls the luminescence of Vibrio fischeri through the transcriptional activator LuxR and the specific autoinducer signal produced by luxI. Amino acid sequences of these two genes were analyzed using bioinformatics tools. LuxI consists of 193 amino acids and appears to contain five α-helices and six ß-sheets when analyzed by SSpro8. LuxI belongs to the autoinducer synthetase fa...

quorum sensing controls the luminescence of vibrio fischeri through the transcriptional activator luxr and the specific autoinducer signal produced by luxi. amino acid sequences of these two genes were analyzed using bioinformatics tools. luxi consists of 193 amino acids and appears to contain five α-helices and six ß-sheets when analyzed by sspro8. luxi belongs to the autoinducer synthetase fa...

statement of problem: in some clinical situations, repair of composite restorations is treatment of choice. improving the bond strength between one new and old composite usually requires increased surface roughness to promote mechanical interlocking since chemical bonding might not be adequate. similarly, the treatment of a laboratory fabricated resin composite restoration involves the same pro...

Background: To analyze the correlations between plasma coagulation factor VII (FVII), plasminogen activator inhibitor-1 (PAI-1), uric acid, and insulin resistance (IR) diabetic macroangiopathy (DMAP) in elderly patients with type 2 diabetes mellitus (T2DM).

Alkali-activated concrete is a promising alternative to conventional Portland cement-based concrete. However, further understanding in relation the durability of alkali-activated required. This paper explores resistance mixes aggressive media that expected encounter in-service. Findings indicate chloride, freeze–thaw and acid increases as slag content activator increased. performance against ch...

Bovine plasminogen activator was isolated from a mixture of streptokinase and human plasminogen. The method of preparation was based on the difference in solubility between the activator and its precursors. The activator can be prepared from either crude or highly purified streptokinase and highly purified human plasminogen. The activator complex gave a single component in starch gel electropho...

Abstract Based on the knowledge that exists today, it is generally accepted there are basic parameters and characteristics to obtain effective mixtures for their use in 3D printing. Rheological behavior setting time (initial final) those determine workability, as well speed nature of hardening molded pastes and, a result, final framework integrity resulted structure. Among promising options pri...