Probing Silica-Kaolinite Interactions with Sum Frequency Generation Spectroscopy.

Treating the oil sands tailings ponds is a major challenge because of the vast amounts of tailings and the need for a reliable treatment technique for releasing water and generating the highly consolidated material required for land reclamation. Treatment with chemicals such as lime (calcium (hydr)oxide) is a promising technology for tailings dewatering and consolidation, particularly at higher pH. Given that kaolinite and silica minerals are the main constituents of many oil sands, we have investigated the influence of lime and NaOH addition on the silica/aqueous kaolinite interface over the pH range 7.

Conjugation of synthetic N-acetyl-lactosamine to azide-containing proteins using the Staudinger ligation.

Generation of defined glycoconjugates is necessary for the study of glycoprotein function, as well as the development of therapeutics. The biosynthesis of glycoproteins produces multiple glycoforms, proteins which differ only in the structure of the attached glycan. This inherent heterogeneity complicates the study of isolated glycans and, in particular, could obscure the role of individual glycan epitopes in biological function.

[Functional treatment outcome in rectal cancer after trans-abdominal resection with endoprosthesis].

Functional results of treatment of 107 patients with cancer recti, in whom the tumor had localized on the 8-12 cm distance from anus, were analyzed. Comparative estimation of sphincterometric and clinical indexes in terms up to 12 months after performance of abdominoanal resection and transabdominal resection of rectum was conducted. Application of the operation proposed had permitted to quicken and to improve trustworthy the postoperative rehabilitation of patients.

[The results of surgical treatment of rectal cancer].

The results of treatment of 948 patients radically operated for cancer recti during 1989-1998 period was studied up. The postoperative complications frequency had lowered as well as mortality from 8.05 down to 1.

[The effect of adrenaline on the succinate dehydrogenase activity in functionally changed (lymphoid leukosis) lymphocytes in mice].

The activity of succinate dehydrogenase (SDH) in lymphocytes of peripheral blood of AKR mice was measured in response to intraperitoneal injection of epinephrine hydrochloride at a dose of 1 mg/kg. SDH reactions to epinephrine were of two types: increase or decrease of activity. The type of reaction depended on the initial enzyme level.