Effect of the reaction mixture on the structure and permeability of macroporous SiO[2], obtained by sol gel by method

In this paper, a number of porous silicone monoliths were synthesized under various conditions and their composition, structure, permeability coefficients k, and porosity were studied. The effect of the introduction of ethyl alcohol in the reaction mixture on the properties of the obtained silica was revealed

Complex pleural empyema can be safely treated with vacuum-assisted closure

<p>Abstract</p> <p>Objective</p> <p>For patients with postoperative pleural empyema, open window thoracostomy (OWT) is often necessary to prevent sepsis. Vacuum-assisted closure (VAC) is a well-known therapeutic option in wound treatment. The efficacy and safety of intrathoracal VAC therapy, especially in patients with pleural empyema with bronchial stump insufficiency or remain lung, has not yet been investigated.</p> <p>Methods</p> <p>Between October 2009 and July 2010, eight consecutive patients (mean age of 66.1 years) with multimorbidity received an OWT with VAC for the treatment of postoperative or recurrent pleural empyema. Two of them had a bronchial stump insufficiency (BPF).</p> <p>Results</p> <p>VAC therapy ensured local control of the empyema and control of sepsis. The continuous suction up to 125 mm Hg cleaned the wound and thoracic cavity and supported the rapid healing. Additionally, installation of a stable vacuum was possible in the two patients with BPF. The smaller bronchus stump fistula closed spontaneously due to the VAC therapy, but the larger remained open.</p> <p>The direct contact of the VAC sponge did not create any air leak or bleeding from the lung or the mediastinal structures. The VAC therapy allowed a better re-expansion of remaining lung.</p> <p>One patient died in the late postoperative period (day 47 p.o.) of multiorgan failure. In three cases, VAC therapy was continued in an outpatient service, and in four patients, the OWT was treated with conventional wound care. After a mean time of three months, the chest wall was closed in five of seven cases. However, two patients rejected the closure of the OWT. After a follow-up at 7.7 months, neither recurrent pleural empyema nor BPF was observed.</p> <p>Conclusion</p> <p>VAC therapy was effective and safe in the treatment of complicated pleural empyema. The presence of smaller bronchial stump fistula and of residual lung tissue are not a contraindication for VAC therapy.</p

Анализ методов увеличения нефтеотдачи на терригенных коллекторах месторождений Западной Сибири

В данной выпускной работе были рассмотрены и проанализированы особенности строения терригенных коллекторов, а также методы увеличения нефтеотдачи, применяемые на месторождениях Западной Сибири, имеющих терригенный тип коллекторов.In the final work, the structural features of terrigenous reservoirs, as well as oil recovery enhancement methods used in fields of Western Siberia having a terrigenous reservoir type, were considered and analyzed