Разработка искровых коммутаторов с циркуляцией газа для ГИН Аркадьева-Маркса

Спроектирован и собран управляемый искровой разрядник с циркуляцией газа и инициированием на принципе "искажения поля" для генератора импульсных напряжений Аркадьева - Маркса. Впервые получены данные о ресурсе работы электродов из нержавеющей стали многоступенчатого разрядника в газе под давлением при работе в генераторе Аркадьева–Маркса в длительном режиме с частотой следования импульсов от 5 до 8 имп/сек. с энергией в импульсе 2 кДж.A controlled spark gap with gas circulation and initiation on the "field distortion" principle for the Arkadiev-Marx pulse voltage generator was designed and assembled. For the first time, data were obtained on the operating life of stainless steel electrodes of a multistage spark gap in a pressurized gas when operating in the Arkadev-Marx generator in a long-time regime with a pulse repetition rate of 5 to 8 pulses per second. with a pulse energy of 2 kJ

"I am becoming more and more like my eldest brother!": the relationship between older siblings, adolescent gambling severity, and the attenuating role of parents in a large-scale nationally representative survey study

The present study examined the association between having older siblings who gamble and adolescent at-risk/problem gambling and how parents (i.e., parental knowledge of their whereabouts) and peers might moderate such effects. Data were drawn from the ESPAD®Italia2012 survey (European School Survey Project on Alcohol and Other Drugs) comprising a nationally representative Italian sample of adolescents. The analysis was carried out on a subsample of 10,063 Italian students aged 15–19 years (average age = 17.10; 55 % girls) who had at least one older sibling and who had gambled at some point in their lives. Respondents’ problem gambling severity, older gambler sibling, gambler peers, parental knowledge, and socio-demographic characteristics were individually assessed. Multinomial logistic regression analyses including two- and three-way interactions were conducted. The odds of being an at-risk/problem gambler were higher among high school students with older siblings that gambled and those with peers who gambled. Higher parental knowledge (of who the adolescent was with and where they were in their leisure time) was associated with lower rates of at-risk/problem gambling. There was also an interaction between gamblers with older siblings and parental knowledge. The combination of having siblings who gambled and a greater level of parental knowledge was associated with lower levels of problem gambling. The present study confirmed the occurrence of social risk processes (older siblings and peers who gambled) and demonstrated that gambling among older siblings and peers represents an important contextual factor for increased at-risk/problem gambling. However, parental knowledge appears to be sufficient to counterbalance the influence of older siblings

Confusional migraine is an adult as well as a childhood disease

Background: Acute confusional migraine (ACM) is considered a rare migraine variant primarily seen in children and adolescents. Patients and Methods: We present a series of eight adults and two adolescents suffering from migraine attacks associated with transient confusional states. Results: Eight patients reported two or more such attacks. One of them reported mild head trauma in the past. One patient reported mild head trauma as a possible trigger. Further investigations were unremarkable in all patients and did not suggest underlying structural abnormalities, epilepsy or cerebrovascular disease. In none of these patients did we find another cause to explain the observed phenomenon. Conclusions: Based on this series of patients, we suggest expanding the concept of confusional migraine from the paediatric population to adults. The temporal course of the confusion as well as the association with visual and other aura symptoms suggest cortical spreading depression as the underlying pathophysiology