Über morphologische Veränderungen von Kieselgurgranulomen unter dem Einfluß des Bacillenstammes Hü

Ohne Zusammenfassung     

Über Blutungen bei mit Insulin Behandelten Komafällen

Ohne Zusammenfassung     

Psoriasis arthropathica

Ohne Zusammenfassung     

Ein Beitrag zur Frage: Polyneuritis mercurialis oder syphilitica?

Ohne ZusammenfassungVortrag, gehalten in der Dermatologen-Vereinigung des rheinischwestphälischen Industriebezirks in Düsseldorf am 28. April 1901.     

Permeability and Load Capacity of Iron Porous Bearings with the Addition of Hexagonal Boron Nitride

Due to their properties, porous sliding bearings are considered to be maintenance-free, which means that no lubrication is required during operation. Their design enables operation at low rotational speeds with high load. Another effect of this bearing design is the lubrication continuity in the tribological pair. In this study, the selected tribological properties (such as load capacity and permeability) of new-generation iron porous bearings with boron nitride powder were experimentally investigated. Tests were carried out under various conditions, using unique test apparatus. The addition of 3% (weight) of hexagonal boron nitride (hBN) significantly increased the load capacity of tested porous bearings in comparison to the same standard bearings containing 2.5% copper. The obtained p_gr·v rating reached almost 7 MPa, which is a value almost three times higher than the requirements for this type of bearing. It is worth emphasizing that such a result was obtained despite a noticeable deterioration in the air and oil permeability of the bearing.     

Effect of the Indentation Load on the Raman Spectra of the InP Crystal

Nanoindentations and the Raman spectroscopy measurements were carried out on the (001) surface of undoped and S-doped InP crystal. The samples were indented with the maximum load ranging from 15 mN to 100 mN. The phase transition B3→B1 was not confirmed by spectroscopic experiments, indicating a plastic deformation mechanism governed by dislocations activity. Increasing the maximum indentation load shifts and the longitudinal and transverse optical Raman bands to lower frequencies reveals a reduction in the elastic energy stored in the plastic zone right below the indentation imprint. Mechanical experiments have shown that a shift in Raman bands occurs alongside the indentation size effect. Indeed, the hardness of undoped and S-doped InP crystal decreases as a function of the maximum indentation load.     

Combined correction of an adult scimitar syndrome and coronary artery bypass grafting

Combined scimitar syndrome and coronary artery disease is a rare combination of congenital and acquired cardiac disease in adults. Hence, no guidelines for surgical correction are available. We report on the case of a 60-year-old man with coronary artery disease and scimitar syndrome. The patient underwent arterial coronary revascularization and simultaneous correction of the scimitar syndrome utilizing a new surgical approach with a modified pericardium-baffle reconstruction of the anomalous right pulmonary vein.     

Somatostatin and propranolol to treat small-for-size syndrome that occurred despite splenic artery ligation

We report our success with somatostatin and propranolol to treat small-for-size syndrome that occurred despite splenic artery ligation. A 48-year-old woman with cirrhosis due to autoimmune hepatitis underwent living-donor liver transplant; her graft-to-body weight ratio of the right lobe was 0.91%. After arterial reperfusion, portal pressure and flow were 24 cm H20 and 2.22 L/min (ie, 360 mL/100g graft/min), respectively. Following splenic artery ligation, the portal pressure decreased to 16 cm H20 and portal flow to 1.74 L/min (ie, 282 mL/100g graft/min). On the second postoperative day, small-for-size syndrome was diagnosed based on the marked prolongation of prothrombin time (international normalized ratio, 4.4), hyperbilirubinemia (359.1 micromol/L), rapid escalation of transaminases (alanine aminotransferase 2488 U/L, aspartate aminotransferase 1075 U/L) and very high portal flow rate (> 90 cm/sec). Oral propranolol (40 mg/day b.i.d.) and somatostatin infusion (250-microgram bolus followed by perfusion at a rate of 250 microgram/h for 5 days) were started. Prothrombin time and transaminase levels began to decrease the following day, although the bilirubin level increased to 495.9 micromol/L before returning to normal. The patient was discharged in excellent health 5 weeks after surgery. Despite reduction of portal pressure by splenic artery ligation, small-for-size syndrome may develop in patients with persistent high portal flow. To the best of our knowledge, this is the first report of the successful treatment of small-for-size syndrome by somatostatin and propranolol in the clinical setting.     

Left atrial approach to close the atrial septal defect type II in case of right lung agenesis with extreme dextroversion

This paper presents a case of a rare combination of right lung agenesis and atrial septal defect type II (ASD II). Successful surgical repair of ASD II was performed at the age of six years with total circulatory arrest (TCA) and deep hypothermia, because of difficult approach. Computed tomography and intraoperative findings are described. From patho-embryological consideration, defects in the primitive respiratory apparatus in embryo stages were presumably responsible for agenesis of the lung. The patient was found to have a very short stump of the right pulmonary artery, but this malformation seems to be secondary.