Micellar Aggregates of Gemini Surfactants: Monte Carlo Simulation of a Microscopic Model

We propose a "microscopic" model of gemini surfactants in aqueous solution. Carrying out extensive Monte Carlo simulations, we study the variation of the critical micellar concentration (CMC) of these model gemini surfactants with the variation of the (a) length of the spacer connecting the two hydrophilic heads, (b) length of the hydrophobic tail and (c) the bending rigidity of the hydrocarbon chains forming the spacer and the tail; some of the trends of variation are counter-intuitive but are in excellent agreement with the available experimental results. Our simulations also elucidate the dependence of the shapes of the micellar aggregates and the magnitude of the CMC on the geometrical shape and size of the surfactant molecules and the electrical charge on the hydrophilic heads

The dental health of patients with vegetarian and mixed nutrition

The article presents the results of the analysis of the impact of changing the type of nutrition on the dental status of patients obtained through a survey and clinical examination of patients-vegetarians and patients with mixed type of nutrition.В статье приведены результаты анализа влияния смены типа питания на стоматологический статус пациентов, полученные посредством опроса и данных клинического обследования пациентов-вегетарианцев и пациентов со смешанным типом питания

The dental health of patients residents of the Sverdlovsk region with vegetarian nutrition

The article presents the results of the analysis of the impact of changing the type of nutrition on the dental status of patients obtained through a survey and clinical examination of patients-vegetarians, living in Sverdlovsk region.В статье приведены результаты анализа влияния типа питания на стоматологический статус пациентов, полученные посредством опроса и данных клинического обследования пациентов-вегетарианцев, проживающих в Свердловской области