Laser method of sound emission control from vibrating surfaces of noise road barriers

Proposition of a new hybrid measurement method applying for road acoustic barriers infrastructure maintenance, planning and development on the base of innovative vibro-acoustic control of their efficacy, is presented and discussed. The method is based on an interdisciplinary approach using optical LDV, computational and acoustic methods

Construction of a numerical groundwater flow model in areas of intense mine drainage, as exemplified by the Olkusz Zinc and Lead Ore Mining Area in southwest Poland

Areas of intense mine drainage that are subjected to numerical modelling require the construction of a complex model structure that will properly reflect actual conditions. This paper presents the process and results of constructing such a structure for the Olkusz Zinc and Lead Ore Mining Area, an area situated in a cone of depression the extent of which reaches 500 km 2 . This size range calls for a selection of appropriate external boundaries, properly separated from these of the mine drainage area. The complex geological structure of the Olkusz area, associated with considerable variation in the thickness of rock formations, discontinuities of rock levels and occurrence of numerous faults, must be schema- tised so that calculation layers can be identified. The faults in the study area have to be reflected in the regional model structure, although only those faults that actually affect groundwater flows should be selected. The model structure needs to include detailed recognition and reflection of hydraulic contacts between aquifer levels, together with a selec- tion of hydrogeological parameters that are different for particular formations. Only a complex structure built in such a manner may be the foundation of further model studies

Management of left renal vein during abdominal aortic aneurysm operations - own experience

Wstęp. Chociaż przecięcie i rekonstrukcja lewej żyły nerkowej nie jest postępowaniem rutynowym w przebiegu operacji tętniaka aorty brzusznej, to manewr ten w wybranych przypadkach znacznie ułatwia dostęp do szyi tętniaka czy też nadnerkowego odcinka aorty. Celem pracy była próba odpowiedzi na następujące pytania: - jak często manewr przecięcia lewej żyły nerkowej był konieczny w trakcie operacji rekonstrukcyjnych u chorych z tętniakiem aorty brzusznej w materiale własnym? - jaki był sposób postępowania z żyłą nerkową po zakończeniu rekonstrukcji aorty brzusznej i czy wpływał on na pooperacyjną wydolność nerek? Materiał i metody. Badaniem objęto 375 chorych leczonych operacyjnie z powodu tętniaka aorty brzusznej, w tym 85 chorych leczonych z powodu pękniętego tętniaka aorty brzusznej. W badanej grupie pacjentów dokonano retrospektywnej oceny przedoperacyjnej i pooperacyjnej funkcji nerek na podstawie pomiarów stężenia kreatyniny w surowicy krwi. Wyniki. Na podstawie analizy uzyskanych danych stwierdzono, iż przyczyną wzrostu stężenia kreatyniny w surowicy krwi w okresie pooperacyjnym nie był wykonywany w trakcie operacji manewr przecięcia lewej żyły nerkowej. Wzrost stężenia kreatyniny występował znamiennie częściej w grupie chorych operowanych z powodu pękniętego tętniaka aorty brzusznej, a sam manewr przecięcia lewej żyły nerkowej w tej grupie chorych nie nasilał objawów niewydolności nerek w okresie pooperacyjnym. Wnioski. Autorzy niniejszej pracy uważają, iż rekonstrukcja lewej żyły nerkowej jest stosunkowo prosta technicznie i jeżeli jest to tylko możliwe, powinno się ją przeprowadzać w każdym przypadku. W wybranych przypadkach zaniechanie przecięcia lewej żyły nerkowej może utrudnić dostęp do szyi tętniaka, a podwiązanie jej często nasila uporczywe krwawienie żylne z przestrzeni pozaotrzewnowej. W wybranych przypadkach przecięcie z późniejszą rekonstrukcją lewej żyły nerkowej może ułatwić przebieg operacji rekonstrukcyjnej aorty brzusznej i pozwala zmniejszyć ryzyko powikłań krwotocznych, a manewr ten nie wpływa na pooperacyjną wydolność nerek.Background. Although division and reconstruction of the left renal vein is not a routine procedure in the course of abdominal aortic aneurysm operations, this manoeuvre, in selected cases, significantly facilitates access to the neck of the aneurysm or to the suprarenal part of the aorta. The aim of the study was to attempt to find answers to the following questions: - how often is the procedure of dividing the left renal vein necessary during reconstructive operations on patients with abdominal aortic aneurysms, in the author's experience? - what is the best way of proceeding with the renal vein after abdominal aortic reconstruction has been finished, and does it influence postoperative renal efficiency? Material and methods. The study group comprised 375 patients who were surgically treated due to abdominal aortic aneurysm. Eighty-five of them were treated due to ruptured aortic aneurysm. In the group of patients who were examined the retrospective preoperative and postoperative appraisal of renal function was made on the basis of the measurement of creatinine concentration in blood serum. Results. On the basis of data analysis, it is possible to state that the increase of creatinine concentration in blood serum in the postoperative period was not caused by the manoeuvre of dividing the left renal vein, performed during the operation. The increase of creatinine concentration occurred much more frequently in the group of patients operated for ruptured abdominal aortic aneurysm, and the manoeuvre of dividing the left renal vein itself did not intensify the renal insufficiency symptoms in this group of patients in the postoperative period. Conclusions. We consider the reconstruction of the left renal vein to be technically relatively easy and it should be performed in every possible case. In certain cases failure to divide the left renal vein may worsen access to the neck of the aneurysm, and its ligation often intensifies venous bleeding from the retroperitoneal space. We claim that in certain cases the division, together with the later reconstruction, of the left renal vein may facilitate the course of reconstructive operation of the abdominal aorta and decreases the risk of haemorrhage complications. Moreover, this manoeuvre does not influence postoperative renal function

Possibilities of surface waters monitoring at mining areas using UAV

The selected, remote measurement methods are discussed, useful for determining surface water properties using mobile unmanned aerial platforms (UAV). The possibilities of using this type of solutions in the scope of measuring spatial, physicochemical and biological parameters of both natural and anthropogenic water reservoirs, including flood polders, water-filled pits, settling tanks and mining sinks were analyzed. Methods of remote identification of the process of overgrowing this type of ecosystems with water and coastal plant formations have also been proposed

Possibilities of surface waters monitoring at mining areas using UAV

The selected, remote measurement methods are discussed, useful for determining surface water properties using mobile unmanned aerial platforms (UAV). The possibilities of using this type of solutions in the scope of measuring spatial, physicochemical and biological parameters of both natural and anthropogenic water reservoirs, including flood polders, water-filled pits, settling tanks and mining sinks were analyzed. Methods of remote identification of the process of overgrowing this type of ecosystems with water and coastal plant formations have also been proposed

Construction of a numerical groundwater flow model in areas of intense mine drainage, as exemplified by the Olkusz Zinc and Lead Ore Mining Area in southwest Poland

Areas of intense mine drainage that are subjected to numerical modelling require the construction of a complex model structure that will properly reflect actual conditions. This paper presents the process and results of constructing such a structure for the Olkusz Zinc and Lead Ore Mining Area, an area situated in a cone of depression the extent of which reaches 500 km 2 . This size range calls for a selection of appropriate external boundaries, properly separated from these of the mine drainage area. The complex geological structure of the Olkusz area, associated with considerable variation in the thickness of rock formations, discontinuities of rock levels and occurrence of numerous faults, must be schema- tised so that calculation layers can be identified. The faults in the study area have to be reflected in the regional model structure, although only those faults that actually affect groundwater flows should be selected. The model structure needs to include detailed recognition and reflection of hydraulic contacts between aquifer levels, together with a selec- tion of hydrogeological parameters that are different for particular formations. Only a complex structure built in such a manner may be the foundation of further model studies

Construction of a numerical groundwater flow model in areas of intense mine drainage, as exemplified by the Olkusz Zinc and Lead Ore Mining Area in southwest Poland

Areas of intense mine drainage that are subjected to numerical modelling require the construction of a complex model structure that will properly reflect actual conditions. This paper presents the process and results of constructing such a structure for the Olkusz Zinc and Lead Ore Mining Area, an area situated in a cone of depression the extent of which reaches 500 km2. This size range calls for a selection of appropriate external boundaries, properly separated from these of the mine drainage area. The complex geological structure of the Olkusz area, associated with considerable variation in the thickness of rock formations, discontinuities of rock levels and occurrence of numerous faults, must be schematised so that calculation layers can be identified. The faults in the study area have to be reflected in the regional model structure, although only those faults that actually affect groundwater flows should be selected. The model structure needs to include detailed recognition and reflection of hydraulic contacts between aquifer levels, together with a selection of hydrogeological parameters that are different for particular formations. Only a complex structure built in such a manner may be the foundation of further model studies

Photovoltaic road and rail noise barriers at different environmental and soil conditions, including mining terrains

Regulations and standards concerning noise road and rail barriers are presented together with an actual state-of-the-art in Europe. Application of photovoltaics to such infrastructure are considered. The targets of international CEFRABID research project, realised within ERA-SOLAR.NET European program, and concerning photovoltaic road and rail noise barriers for Austria, Cyprus, Poland and Spain, at different environmental and soil conditions, including mining terrains are shortly presented

Heterogenicity within the LPS Structure in Relation to the Chosen Genomic and Physiological Features of the Plant Pathogen <i>Pectobacterium parmentieri</i>

Pectobacterium parmentieri is a pectinolytic plant pathogenic bacterium causing high economic losses of cultivated plants. The highly devastating potential of this phytopathogen results from the efficient production of plant cell wall-degrading enzymes, i.e., pectinases, cellulases and proteases, in addition to the impact of accessory virulence factors such as motility, siderophores, biofilm and lipopolysaccharide (LPS). LPS belongs to pathogen-associated molecular patterns (PAMPs) and plays an important role in plant colonization and interaction with the defense systems of the host. Therefore, we decided to investigate the heterogeneity of O-polysaccharides (OPS) of LPS of different strains of P. parmentieri, in search of an association between the selected genomic and phenotypic features of the strains that share an identical structure of the OPS molecule. In the current study, OPS were isolated from the LPS of two P. parmentieri strains obtained either in Finland in the 1980s (SCC3193) or in Poland in 2013 (IFB5432). The purified polysaccharides were analyzed by utilizing 1D and 2D NMR spectroscopy (1H, DQF-COSY, TOCSY, ROESY, HSQC, HSQC-TOCSY and HMBC) in addition to chemical methods. Sugar and methylation analyses of native polysaccharides, absolute configuration assignment of constituent monosaccharides and NMR spectroscopy data revealed that these two P. parmentieri strains isolated in different countries possess the same structure of OPS with a very rare residue of 5,7-diamino-3,5,7,9-tetradeoxy-l-glycero-l-manno-non-2-ulosonic acid (pseudaminic acid) substituted in the position C-8: →3)-β-d-Galf-(1→3)-α-d-Galp-(1→8)-β-Pse4Ac5Ac7Ac-(2→6)-α-d-Glcp-(1→6)-β-d-Glcp-(1→. The previous study indicated that three other P. parmentieri strains, namely IFB5427, IFB5408 and IFB5443, exhibit a different OPS molecule than SCC3193 and IFB5432. The conducted biodiversity-oriented assays revealed that the P. parmentieri IFB5427 and IFB5408 strains possessing the same OPS structure yielded the highest genome-wide similarity, according to average nucleotide identity analyses, in addition to the greatest ability to macerate chicory tissue among the studied P. parmentieri strains. The current research demonstrated a novel OPS structure, characteristic of at least two P. parmentieri strains (SCC3193 and IFB5432), and discussed the observed heterogenicity in the OPS of P. parmentieri in a broad genomic and phenotype-related context