Влияние молекулярной массы диановых эпоксидных олигомеров промышленных марок на кинетику усадки при отверждении

Influence of molecular characteristics on the kinetics of contraction of epoxy oligomers and their mixes upon solidification was investigated. The generalised dependences of the volume shrinkage of epoxy oligomers and their mixes on average MW at the time of gelation beginning and gel time were obtained.В работе исследовано влияние молекулярной массы на кинетику усадки при отверждении эпоксидных олигомеров промышленных марок. Показано, что конечная усадка эпоксидных олигомеров практически не зависит от их молекулярных характеристик. Впервые определены значения усадки на разных стадиях процесса гелеобразования эпоксидных олигомеров с различной молекулярной массой. Установлено, что эпоксидные олигомеры и их смеси с низкой молекулярной массой имеют наиболее высокое значение усадки к моменту начала гелеобразования

Российский консенсус по профилактике, диагностике и лечению рака желудка

The Russian consensus on prevention, diagnostic and treatment of gastric cancer was prepared on the initiative of the Moscow clinical scientific center named after A. S. Loginov according to the Delphi method. Its aim was to clarify and consolidate the opinions of specialists on the most relevant issues of prevention, diagnosis and treatment of gastric cancer. An interdisciplinary approach was provided by the participation of leading gastroenterologists, oncologists and surgeons.Российский консенсус по профилактике, диагностике и лечению рака желудка подготовлен по инициативе Московского клинического научного центра им А. С. Логинова ДЗМ по Дельфийской системе. Его целью явилась консолидация мнений отечественных специалистов по наиболее актуальным вопросам профилактики, скрининга, диагностики и лечения рака желудка. Междисциплинарный подход обеспечен участием ведущих гастроэнтерологов, онкологов и хирургов.Цель статьи: представить положения Российского консенсуса по профилактике, диагностике и лечению рака желудка

Influence of the molecular weight of industrial epoxy oligomers on contraction kinetics upon solidification

Influence of molecular characteristics on the kinetics of contraction of epoxy oligomers and their mixes upon solidification was investigated. The generalised dependences of the volume shrinkage of epoxy oligomers and their mixes on average MW at the time of gelation beginning and gel time were obtained

The medical nurses:the factors of professional burning-out

Nowadays, the professional burnout of paramedical personnel becomes a serious health care problem, resulting in productivity loss and medical care costs increase. The most effective mean to prevent the mentioned burnout is elimination of risk factors. The study purpose is to identify such factors (both positive or negative ones) and to quantify their contribution into development of professional burnout as exemplified by paramedical personnel in the Tomsk Oblast of Russia. The study sampling included 2,486 paramedicals as respondents. The sociological survey was carried out using questionnaire that included the Maslach Burnout Inventory tool and questions to assess corresponding factors of social, professional, economic and physical spheres of life. The study established high prevalence of high degree (29.57%) and extremely high degree (37.01%) of professional burnout in respondents. The following factors were associated with decrease in likelihood of burnout: advanced age (r = -0.089), married status (OR = 0.7; 95% CI 0.6-0, 9), higher number of children in family (r = -0.088), adequate sleep (r = -0.046), amount of time spent on sports per day (r = -0.167). The following factors were associated with increase in the likelihood of burnout: self-reported lack of sleep (OR = 2.1; 95% CI 1.8-2.5), frequent night shift work (r=0.082). The multiple linear regression analysis was applied with selection of model using the Akaike criterion: two mathematical models were formed for the integral value of professional burnout and its "Emotional exhaustion" sub-scale. The models described 15% and 20% of dispersion, respectively. The models allow both to quantify particular contributing factors to development of this syndrome and to develop programs of strengthening positive factors and mitigate negative ones. This will prevent development of professional burnout in paramedical personnel in the Tomsk Oblast