Changes in mesh sizes of cod-end netting of trawls used by the trawlers type B-18 during their exploitation

The present paper describes studies on changes in mesh sizes of the cod-end netting of trawls used by the B-18 type freezing trawlers belonging to the Deep Sea Fisheries Company (PPDiUR) "Odra" in Świnoujście. Measurements of the mesh sizes were taken from 6 cod-ends of bottom and pelagic trawlers, using a Polish Longitudinal-force mesh gauge. It was shown that a significant increase of .mesh sizes in the trawl cod-ends occurred during the trawl exploitation. Meshes of the upper part of trawls subjected to the greater deformations. Detailed results of investigations are given in Table 2 and 3

Cementitious materials with controlled volume changes for repairing and sealing works

Sporządzono spoiwa bezskurczowe i ekspansywne złożone z cementów portlandzkich o różnym składzie oraz z tak zwanego czynnika ekspansywnego stanowiącego mieszankę cementu glinowego oraz specjalnego spieku siarczanowo-wapniowego. Określono zmiany objętości stwardniałych zaczynów, jak również dynamikę narastania wytrzymałości i czas wiązania. Ustalono doświadczalnie proporcje składników mieszanek ekspansywnych oraz receptury spoiw. Dokonano prób wyjaśnienia zmian objętości w funkcji zawartości poszczególnych składników - przeprowadzono badania składu fazowego hydratyzujących materiałów oraz obserwacje mikroskopowe.The shrinkage-less and expansive binders were produced by mixing of different portland cements with an expansive agent composed of calcium aluminate cement and special sulfate-lime sinter. The volume changes, strength development and setting of binders were characterized. In the experiments the proportions of expansive mixtures and cementitious materials were stated. The investigations with aim to find the relationship between the volume changes and composition of initial mixtures were also carried out - the phase composition studies and microscopic observations were done

The results of wet AMD treatment by intravitreal injections of ranibizumab within the framework of the therapeutic group B02

Wprowadzenie do medycyny leków hamujących angiogenezę porównywane jest do ery wprowadzenia antybiotyków w XX w. Udostępnienie w Polsce we wrześniu 2010 r. w ramach refundacji NFZ najnowocześniejszej i dotychczas najbardziej skutecznej terapii wysiękowej postaci zwyrodnienia plamki związanego z wiekiem z zastosowaniem iniekcji doszklistkowych przeciwciała monoklonalnego anty-VEGF (ranibizumab) wprowadziło nowe standardy leczenia. W niniejszym artykule podjęliśmy próbę oceny efektów leczenia w postaci wysiękowej AMD w ramach grupy terapeutycznej B02.Introduction into medicine of the drugs which inhibit angiogenesis is comparable with introduction of antibiotics in the 20th century. Admission in Poland, in September 2010, the most effective therapy of the wet form of AMD in which intravitreal injections containig monoclonal antibody anti-VEGF (ranibizumab) is used, introduced new standards of the treatment of wAMD. This therapy is refunded by NFZ. The aim of this article is to evaluate the effects of the AMD treatments within the framework of the therapeutic group B02

Magnetic Properties of "As-Prepared" and Chemically Modified Multiwalled Carbon Nanotubes

In this work we have studied the structural and magnetic properties of "as-prepared" multiwalled carbon nanotubes, synthesized by the chemical vapor deposition method, and chemically modified multiwalled carbon nanotubes. Transmission electron microscopy was used to show multiwalled carbon nanotubes structure. The results of systematic magnetic property measurements on multiwalled carbon nanotubes are presented. The static and dynamic magnetic responses, such as the temperature dependence of the linear AC susceptibility and DC magnetization up to 9 T were studied. We have observed significant changes in magnetic AC susceptibility and magnetization for "as-prepared" and chemically modified multiwalled carbon nanotubes samples