Matrix Schroedinger equations and Darboux transformations

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Bank’s due diligence: essence, kinds, features of carrying out

The article is devoted to the analysis of carrying out a company’s/bank’s due diligence, disclosed its substance, main forms and phases of this procedure are viewed. Specified, that due diligence has the key importance in M&A transactions.В статье исследованы вопросы проведения комплексной диагностики компании/банка, раскрыта его сущность, рассмотрены виды и основные этапы данной процедуры. Отмечена исключительная важность комплексной диагностики во время операций по слиянию и поглощению

(Diaqua)hexakis(4,4,4-trifluoro-1-(1-methyl-1<i>H</i>-pyrazol-4-yl)butane-1,3-dionato-κ²O,O’)(μ-(1,4-dioxane))digadolinium (III), Solvate with Two Molecules of 1,4-Dioxane

A binuclear gadolinium (III) complex was obtained through the interaction of GdCl3·6H2O, 4,4,4-trifluoro-1-(1-methyl-1H-pyrazol-4-yl)butane-1,3-dione and NaOH in MeOH solution. Molar ration of reagents equal to 1:3:3 was used. Upon recrystallization of wet 1,4-dioxane, an intermediate hydrated complex formed stable crystalline solvate with the composition [(Gd2(L)3(H2O))2(C4H8O2)]•2(C4H8O2). The structured of complex was established by single crystal XRD experiment. Furthermore, some photophysical properties of the complex were measured. Thus, the energy of the first exited triplet state for the diketonate ligand was found to be 22400 cm−1, which makes 4,4,4-trifluoro-1-(1-methyl-1H-pyrazol-4-yl)butane-1,3-dione a promising ligand for the preparation of highly luminescent Eu3+ and Sm3+ complexes

The newest possibilities of disease-modifying antirheumatic drugs therapy with leflunomide and biologic agents therapy

Modern data about possibilities and perspectives of tumor necrosis factor blocking agents and leflunomide used for the disease-modifying treatment in patients with rheumatoid arthritis (RA) is presented. It has been revealed that the immunosuppressive drug leflunomide is effective in the treatment of RA and exerts therapeutic effects similar to those of the disease-modifying antirheumatic drugs (DMARD) therapy. Clinical trials have shown that parenteral administration of TNF neutralizing agents is remarkably effective at controlling signs and symptoms of RA in patients who have failed DMARD therapy, as well as in naïve patients

2,3,4,5,6-Pentabromobenzoic Acid

Pentabromobenzoate is a useful fragment in organic synthesis and in coordination chemistry. Among known synthetic approaches to pentabromobenzoic acid (PBA), we have assessed and identified exhaustive bromination of benzoic acid by using 1.3-dibromoisocyanuric acid in concentrated H2SO4 solution as the most efficient method for the preparation of PBA on a multigram scale. As the crude bromination product is typically contaminated with 3,4,5,6-tetrabromobenzoic acid (TBA) and pentabromobenzene, C6Br5H, a simple purification protocol for preparation of analytically pure PBA has been developed. The molecular structure and crystal packing of PBA established by single-crystal X-ray diffractometry suggests a pattern of H-bonding and halogen bonding in solid state

2,3,4,5,6-Pentabromobenzoic Acid

Pentabromobenzoate is a useful fragment in organic synthesis and in coordination chemistry. Among known synthetic approaches to pentabromobenzoic acid (PBA), we have assessed and identified exhaustive bromination of benzoic acid by using 1.3-dibromoisocyanuric acid in concentrated H2SO4 solution as the most efficient method for the preparation of PBA on a multigram scale. As the crude bromination product is typically contaminated with 3,4,5,6-tetrabromobenzoic acid (TBA) and pentabromobenzene, C6Br5H, a simple purification protocol for preparation of analytically pure PBA has been developed. The molecular structure and crystal packing of PBA established by single-crystal X-ray diffractometry suggests a pattern of H-bonding and halogen bonding in solid state