Miniature oxygen resuscitator

Miniature, portable resuscitation system is used during evacuation of patients to medical facilities. A carrying case contains a modified resuscitator head, cylinder of oxygen, two-stage oxygen regulator, low pressure tube, and a mask for mouth and nose

Rijetko teško oštećenje cakline na gornjem kutnjaku svinje pronađenom u ranoj srednjovjekovnoj tvrđavi u Pragu (Republika Češka) - kratko priopćenje.

The present communication describes the case of an approx. 9 month old pig from the early medieval fortress Vyšehrad in Prague (Bohemia, Czech Republic). It showed an exceptionally severe enamel defect (plane-form hypoplasia) in the upper half of the crown of a right upper first molar. The plane-form defect was probably triggered by short-term disturbances of the enamel matrix secretion. After a period of approximately 1.5 or 2 months, normal enamel secretion may be assumed. Such strong hypoplasia is extremely rare in osteoarchaeological records. Regarding the age of the pig in question, the enamel defect could have been caused by problems during or after birth and/or during weaning.Opisan je nalaz ostataka svinje, u približnoj dobi od 9 mjeseci, pronađene u ranoj srednjovjekovnoj tvrđavi Vyšehrad u Pragu (Češka). Opaženo je iznimno jako oštećenje cakline (glatka hipoplazija) na gornjoj polovici krune, gornjeg, prvog desnog kutnjaka. Glatka hipoplazija vjerojatno je potaknuta kratkoročnim poremećajem matrice u lučenju cakline. Normalna sekrecija cakline može se pretpostaviti nakon razdoblja od približno 1,5 ili 2 mjeseca. Takva jaka hipoplazija izuzetno je rijetka u arheološkim nalazima kosti. S obzirom na dob predmetne svinje, oštećenje cakline moglo bi biti uzrokovano problemima tijekom ili nakon rođenja i/ili tijekom odbića

Right Heart Remodeling in Patients with End-Stage Alcoholic Liver Cirrhosis: Speckle Tracking Point of View

BACKGROUND: Data regarding cardiac remodeling in patients with alcoholic liver cirrhosis are scarce. We sought to investigate right atrial (RA) and right ventricular (RV) structure, function, and mechanics in patients with alcoholic liver cirrhosis. METHODS: This retrospective cross-sectional investigation included 67 end-stage cirrhotic patients, who were referred for evaluation for liver transplantation and 36 healthy controls. All participants underwent echocardiographic examination including strain analysis, which was performed offline. RESULTS: RV basal diameter and RV thickness were significantly higher in patients with cirrhosis. Conventional parameters of the RV systolic function were similar between the observed groups. Global, endocardial, and epicardial RV longitudinal strains were significantly lower in patients with cirrhosis. Active RA function was significantly higher in cirrhotic patients than in controls. The RA reservoir and conduit strains were significantly lower in cirrhotic patients, while there was no difference in the RA contractile strain. Early diastolic and systolic RA strain rates were significantly lower in cirrhotic patients than in controls, whereas there was no difference in the RA late diastolic strain rate between the two groups. Transaminases and bilirubin correlated negatively with RV global longitudinal strain and RV-free wall strain in patients with end-stage liver cirrhosis. The Model for End-stage Liver Disease (MELD) score, predictor of 3-month mortality, correlated with parameters of RV structure and systolic function, and RA active function in patients with end-stage liver cirrhosis. CONCLUSIONS: RA and RV remodeling is present in patients with end-stage liver cirrhosis even though RV systolic function is preserved. Liver enzymes, bilirubin, and the MELD score correlated with RV and RA remodeling

Comparison of properties and cost efficiency of zirconia processed by DIW printing, casting and CAD/CAM milling

In dieser Studie wurden zwei Zirkoniumdioxidtinten mit unterschiedlichem Yttriumoxid- und Füllstoffgehalt hergestellt. Das Ziel dieser Studie war es, die mechanischen Eigenschaften und die Kosteneffizienz des Direct Ink Writing-Drucks im Vergleich zum Gussverfahren und zur subtraktiven Fertigung zu untersuchen. Die biaxiale Biegefestigkeit (BFS) aller Proben wurde mit einem Piston-on-three-balls-test gemessen. Für die Analyse der Kristallstruktur wurde Röntgenbeugung (XRD) verwendet. Die Korngrößen wurden rasterelektronenmikroskopisch bestimmt. Für die wirtschaftliche Analyse wurden die Herstellungskosten einer gedruckten Krone berechnet und mit den Kosten einer CAD/CAM-gefrästen Krone verglichen. Die Korngröße und biaxiale Biegefestigkeit aller Gruppen nahm mit steigender Sintertemperatur zu. Mittels Röntgenbeugung wurden für die Gruppen der Tinte 1 monokline und tetragonale Phasen nachgewiesen, für alle anderen Gruppen wurde keine monokline Phase nachgewiesen. Die CAD/CAM-gefräste Keramik wies eine signifikant höhere biaxiale Biegefestigkeit auf als alle anderen Gruppen. Die biaxiale Biegefestigkeit von Tinte 2 war signifikant höher als die biaxiale Biegefestigkeit von Tinte 1. Bei einer Sintertemperatur von 1550°C betrug die mittlere biaxiale Biegefestigkeit der gedruckten Proben von Tinte 2 822±174 MPa.Die Herstellungskosten einer Direct Ink Writing-gedruckte Krone ist deutlich niedriger als die Herstellungskosten einer CAD/CAM-gefrästen Krone. Aus den Ergebnissen kann man schlussfolgern, dass Direct Ink Writing ein großes Potenzial hat, subtraktive Verfahren für zahnmedizinische Anwendungen zu ersetzen, da es bei geeigneten Tintenzusammensetzungen vielversprechende mechanische Eigenschaften aufweist und eine äußerst kostengünstige Herstellung ermöglicht

Transformation processes in the osteoarchaeological record between the Iron Age and the Roman times with reference to the civitas Treverorum

This paper discusses transformations in human behavior between the Iron Age and the Roman times in the tribal territory of the Treveri, later civitas Treverorum, located between the Rhine and the Ardennes. This aspect has been examined from two perspectives: first, from an anthropological point of view vis-a-vis the historical inhabitants, and second, from an archaeozoological perspective regarding domestic animals. Due to small sample sizes and/or difficulty in dating, both regarding humans and domestic animals, transformations in living conditions and animal-keeping could mostly be outlined only for the La Tène and Roman times. Only the Celtic-Roman cemetery of Wederath-Belginum with continued use from middle La Tène to late antiquity offers a more complex insight into human mortality and animal offerings. People lived longer in the Roman times but had more pathologies compared with the previous La Tène period. Body height remained similar in the La Tène and Roman times. However, differences existed within specific human groups (for example, warriors and craftsmen), compared to the normal population. Sex differences in mortality persisted from La Tène to Roman times. The faunal composition in the burials, settlements, and sanctuaries also shows changes. Since the middle La Tène period, chickens have been present. The first oysters can be found in Augustean times, whereas exotic birds such as crested fowls and peacocks are found only in later Roman times and are quite rare. A new direction in animal-keeping is demonstrated via an increasing logarithmic size index (LSI) in cattle and sheep. The multivariate methods applied in this study offer further insights into the domain and can serve as helpful tools for osteoarchaeological data analysis