Ценные и токсичные элементы-примеси в углях Сахалинского бассейна

Данная работа заключается в изучении геохимии элементов-примесей в углях Тихменевского, Первомайского, Хандасинско-Семиреченского, Горнозаводского, Солнцевского, Константиновского, Новиковского месторождений и Северной группы углепроявлений.This work is to study the geochemical elements used in the coals of Tikhmenevsky, Pervomaisky, Khandasinsko-Semirechensky, Gornozavodsky, Solntsevo, Konstantinovsky, Novikovsky deposits and the Northern group of coal manifestations

Prehabilitation of elderly frail or pre-frail patients prior to elective surgery (PRAEP-GO): study protocol for a randomized, controlled, outcome assessor-blinded trial

Background: Frailty is expressed by a reduction in physical capacity, mobility, muscle strength, and endurance. (Pre-) frailty is present in up to 42% of the older surgical population, with an increased risk for peri- and postoperative complications. Consequently, these patients often suffer from a delayed or limited recovery, loss of autonomy and quality of life, and a decrease in functional and cognitive capacities. Since frailty is modifiable, prehabilitation may improve the physiological reserves of patients and reduce the care dependency 12 months after surgery. Methods: Patients >= 70 years old scheduled for elective surgery or intervention will be recruited in this multicenter, randomized controlled study, with a target of 1400 participants with an allocation ratio of 1:1. The intervention consists of (1) a shared decision-making process with the patient, relatives, and an interdisciplinary and interprofessional team and (2) a 3-week multimodal, individualized prehabilitation program including exercise therapy, nutritional intervention, mobility or balance training, and psychosocial interventions and medical assessment. The frequency of the supervised prehabilitation is 5 times/week for 3 weeks. The primary endpoint is defined as the level of care dependency 12 months after surgery or intervention. Discussion: Prehabilitation has been proven to be effective for different populations, including colorectal, transplant, and cardiac surgery patients. In contrast, evidence for prehabilitation in older, frail patients has not been clearly established. To the best of our knowledge, this is currently the largest prehabilitation study on older people with frailty undergoing general elective surgery

Remote laser beam welding with brilliant laser sources

Die Globalisierung und der damit verbundene Kostendruck zwingen Unternehmen einerseits kostengünstige Herstellungsprozesse in den Fertigungslinien zu implementieren und anderseits den Wünschen der Kunden nach individualisierten Produkten gerecht zu werden. Dieser Zielkonflikt zwischen Individualisierung und Kostenoptimierung kann durch den Einsatz neuer, innovativer und flexibler Fügetechnologien wie z.B. dem Remote-Laserstrahlschweißen (RLS) gelöst werden. Um den wirtschaftlichen Einsatz des RLS zu gewährleisten, wurden in dieser Arbeit die Grundlagen des Schweißprozesses untersucht und dabei die wesentlichen Parameter mit ihren Wirkzusammenhängen analysiert sowie ein empirisches Prozessmodell entwickelt. Die ermittelte Wissensbasis dient als eine Eingangsgröße für eine versatzzeitoptimierte Offline-Bahnplanung von Laserstrahl-Schweißanlagen und ermöglicht Anwendern den RLS-Prozess effizient und aufwandsarm einzustellen.The globalization accompanied by cost pressure compels companies to implement cost efficient production technologies and to produce at the same time individualized products. By using new, innovative and flexible joining technologies like remote laser beam welding (RLW) this conflict of aims between individualization and cost optimization could be solute. To ensure the economical usage of RLW the process basics are investigated within the presented publication. Also the main process parameters and the relationships between them are analyzed and integrated in an empirical process model. The determined knowledge is on the one hand an input parameter for an offline path planning tool for laser welding plants and on the other hand it supports the operators of the laser welding plants during installation and guaranty a good welding quality during production