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    Wyświetlanie 1-9 z 9
    Tytuł:
    Expected harmfulness of gnawing phyllophagous insects in urban stands of Kharkiv city
    Autorzy:
    Kardash, Eugenia
    Shvydenko, Inna
    Kukina, Olga
    Wydawca:
    Committee on Forestry Sciences and Wood Technology of the Polish Academy of Sciences and the Forest Research Institute in Sękocin Stary
    Cytata wydawnicza:
    Olga Kukina, Eugenia Kardash and Inna Shvydenko. "Expected harmfulness of gnawing phyllophagous insects in urban stands of Kharkiv city". Folia Forestalia Polonica Sciendo, 63, no. 4 (2021): 267-275. https://doi.org/10.2478/ffp-2021-0027
    Opis:
    Urban stands are becoming increasingly important in improving the environmental health and liveability of cities. However, they weaken as a result of technogenic air pollution and become vulnerable to pests, particularly to non-native forest insects. The aim of this research was to assess potential harmfulness (bionomically determined harmfulness [BDH]), environmentally determined harmfulness (EDH) and generally expected harmfulness (GEH) of the gnawing phyllophagous lepidopterous insects in the green stands of Kharkiv (Ukraine). All supplementary parameters were assessed by analysis of publications and the own experience of authors. BDH was evaluated as a product of the duration of larvae nutrition (p1) and an index of larvae nutrition (p2). An index of larvae nutrition (p2) was considered being proportional to their imago wingspan. EDH was evaluated as a product of the value of damaged tree species (p3), location of plant damage (p4), the period of loss decorative effect (p5) and the prevalence of certain insect species in the stands (p6). GEH was estimated as a product of BDH, EDH and the ability of insect species to the outbreaks (p7). A modified approach for evaluation BDH, EDH and GEH was suggested and implemented, considering phyllophagous leaf miner insects and phyllophagous insects with open lifestyle in the deciduous stands of streets, parks, and Forest Park of Kharkiv city. EDH of insects with an open lifestyle depends on their size and prevalence in the stand. EDH and GEH of all revealed insects with an open lifestyle increase from streets to Forest Park. Among the insects with an open lifestyle, Lymantriidae and Notodontidae had the highest BDH due to the large size and long feeding period of larvae. Among the insects with hidden lifestyle, Cameraria ohridella had ththe highest BDH due to the highest prevalence and the large duration of feeding period with its several generations.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    P wave duration and morphology in patients with atrial fibrillation
    Autorzy:
    Marinov, Maxim
    Unkell, Malte
    Wolff, Peter Stephan
    Radziejewska, Jadwiga
    Mercik, Jakub Szymon
    Gajek, Jacek
    Wydawca:
    Medical University of Gdańsk
    Cytata wydawnicza:
    Mercik JS, Unkell M, Marinov M, Wolff PS, Radziejewska J, Gajek J. P wave duration and morphology in patients with atrial fibrillation. Eur J Transl Clin Med. 2020;3(2):22-28. DOI: 10.31373/ejtcm/127800
    Opis:
    Background Functional and structural atrial changes contribute to AF. It decreases conduction velocity and forms intra atrial blocks. In the ECG those changes are manifested by the duration and morphology of the P wave. Material and method: The study group consisted of 50 patients with atrial fibrillation. There were 27 women and 23 men, aged 65.3 +/- 9.8 years. 22 patients had paroxysmal AF and 28 had persistent AF, in the latter direct current cardio version was performed. Results In patients with a prolonged episodes of atrial fi- brillation the P wave duration was longer in comparison to patients with sinus rhythm (187.1 +/- 31.5 vs 161.1 +/- 18.8 ms; p = 0.006). There were significant differences in P wave duration among the patients with normal and abnormal interatrial conduction, with the longest duration in complete Bachmann's bundle block group (152.7 +/- 17.5 vs 165.3 +/- 15.3 vs 207.9 +/- 27.5 ms; p < 0.001). Conclusions In patients with persistent atrial fibrillation the duration of the P wave is prolonged in comparison to paroxysmal. In the majority of patients prolongation of the P wave duration is dependent on different forms of conduction block. The morphological changes of P waves are caused by the arrhythmia rather than left atrial hypertrophy.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    P wave duration and morphology in patients with atrial fibrillation
    Autorzy:
    Marinov, Maxim
    Unkell, Malte
    Wolff, Peter Stephan
    Radziejewska, Jadwiga
    Mercik, Jakub Szymon
    Gajek, Jacek
    Wydawca:
    Medical University of Gdańsk
    Cytata wydawnicza:
    Mercik JS, Unkell M, Marinov M, Wolff PS, Radziejewska J, Gajek J. P wave duration and morphology in patients with atrial fibrillation. Eur J Transl Clin Med. 2020;3(2):22-28. DOI: 10.31373/ejtcm/127800
    Opis:
    Background: Functional and structural atrial changes contribute to AF. It decreases conduction velocity and forms intra atrial blocks. In the ECG those changes are manifested by the duration and morphology of the P wave. Material and methods: The study group consisted of 50 patients with atrial fibrillation. There were 27 women and 23 men, aged 65.3 +/- 9.8 years. 22 patients had paroxysmal AF and 28 had persistent AF, in the latter direct current cardio version was performed. Results: In patients with a prolonged episodes of atrial fibrillation the P wave duration was longer in comparison to patients with sinus rhythm (187.1 +/- 31.5 vs 161.1 +/- 18.8 ms; p = 0.006). There were significant differences in P wave duration among the patients with normal and abnormal interatrial conduction, with the longest duration in complete Bachmann's bundle block group (152.7 +/- 17.5 vs 165.3 +/- 15.3 vs 207.9 +/- 27.5 ms; p < 0.001). Conclusions: In patients with persistent atrial fibrillation the duration of the P wave is prolonged in comparison to paroxysmal. In the majority of patients prolongation of the P wave duration is dependent on different forms of conduction block. The morphological changes of P waves are caused by the arrhythmia rather than left atrial hypertrophy.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    The P wave duration in patients with atrial fibrillation undergoing cryoballoon pulmonary vein isolation. Preliminary results
    Autorzy:
    Gajek, Jacek
    Sławuta, Agnieszka
    Zyśko, Dorota
    Adamowicz, Jakub
    Gajek, Aleksandra
    Zawadzki, Jacek Marcin
    Wydawca:
    Gdański Uniwersytet Medyczny
    Cytata wydawnicza:
    Zawadzki JM, Adamowicz J, Sławuta A, Gajek A, Zyśko D, Gajek J. The P wave duration in patients with atrial fibrillation undergoing cryoballoon pulmonary vein isolation. Preliminary results. Eur J Transl Clin Med 2018;1(1):42-45. DOI: 10.31373/ejtcm/96253.
    Opis:
    The pulmonary vein isolation remains the major target of atrial fibrillation ablation. The cryoablation lesions in the left atrium are supposed to disconnect the pulmonary vein from the atrium on the atrial side of the orifices. We hypothesized that the cryoballoon pulmonary vein isolation could result in the prolongation of the P wave duration. The aim of the study was to assess the duration of the P wave in 12-lead electrocardiogram and the influence of pulmonary vein isolation on this parameter. The study group included 21 patients (11 women and 10 men) 66.2+/-7.4 years of age undergoing cryoballoon ablation. In order to measure the P wave duration, we used the constant acquisition of electrogram and the electrocardiographic channels provided by LABSYSTEM™ Pro EP Recording System (Boston Scientific), magnifying the leads 64x. We calculated the duration in the simultaneously recorded 12-lead ECG, from the beginning of the earliest recorded P wave deflection, until the end of the latest P-wave deflection recorded in any lead. The P wave duration in the entire study group was 141.7+/- 12.5 ms before the ablation and increased significantly to 151.1+/-11.5 ms (p<0.05) after the procedure. The respective values in women were 144.1+/-4.3 vs. 156.0+/-4.7 ms (p<0.01) and 139.1+/-4.6 vs. 145.6+/-4.5 ms in men (p<0.05). The mean standard deviation of every single measurement considered separately was 4.4+/- 2.1 ms before the cryoablation and 4.6+/-1.8 ms after the procedure (p= not significant (n.s).), indicating very good reproducibility of the measurements. We concluded, that cryoballoon pulmonary vein isolation leads to the prolongation of the measured P wave duration. It seemed to result from conduction disturbances created by cryoablation. The clinical significance of the observed changes remains unknown.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    Irrigated DiamondTemp catheter and return to ablation under temperature control. First Polish experience with DiamondTemp catheter in pulmonary vein isolation
    Autorzy:
    Koźluk, Edward
    Opolski, Grzegorz
    Rodkiewicz, Dariusz
    Piątkowska, Agnieszka
    Wydawca:
    Medical University of Gdańsk
    Cytata wydawnicza:
    Irrigated DiamondTemp catheter and return to ablation under temperature control. First Polish experience with DiamondTemp catheter in pulmonary vein isolation. Eur J Transl Clin Med. 2021;4(2):44-51. DOI: 10.31373/ejtcm/136234
    Opis:
    We present the first Polish experience with ablation performed using DiamondTemp catheter. The study was conducted with 3 male patients diagnosed with atrial fibrillation (AF). In the first 2 patients typical transseptal punctures were performed, followed by mapping with the Advisor catheter and EnSite-Precision system. One patient had a residual atrial septal leak, therefore ablation without fluoroscopy was attempted. High-power, short-duration ablation under temperature control was performed around pulmonary vein (PV) ostia. The power was 49-53 W, the temperature was 45-48 ͦC. Duration of procedures/fluoroscopy were: 146/8.9, 177/5.9, 132/0.0 min. In the reference group, 10 recent AF identical ablation procedures performed with traditional equipment resulted in 143.0±27.0/6.0±4.4 min. Duration of DiamondTemp applications were 14.7, 32.7, 30.8 min (reference group 37.3 ± 11.4 min). Procedural endpoints were achieved in all but one patient with incomplete isolation of the low segment of the right inferior PV. There were no procedural complications noted. In conclusion, the DiamondTemp saline-irrigated catheter is safe and effective for high-power short-duration ablation in patients with AF. Furthermore, this technology makes it possible to complete the procedure without fluoroscopy. However these findings must be confirmed in larger group of patients.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    Waloryzacja obszaru województwa mazowieckiego pod względem możliwości rozwoju energetyki słonecznej
    Assessment of the Mazovian Province area in terms of possible development of solar energy
    Autorzy:
    Kulesza, Kinga
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Cytata wydawnicza:
    Kulesza K., 2017, Waloryzacja obszaru województwa mazowieckiego pod względem możliwości rozwoju energetyki słonecznej, „Czasopismo Geograficzne”, 88(1-2): 41-48.
    Opis:
    W pracy przedstawiono waloryzację obszaru województwa mazowieckiego pod względem możliwości rozwoju energetyki słonecznej. Waloryzacji dokonano z wykorzystaniem analizy wielokryterialnej, na podstawie danych pomiarowych z okresu 1971-2000, z 16 stacji meteorologicznych. Określono niemianowany wskaźnik przydatności, którego różnice między poszczególnymi częściami województwa są niewielkie – wartości wskaźnika przydatności wahają się w granicach 0,72-0,79 (podczas gdy przedział możliwych wartości wynosi od 0 do 1). Jednak to właśnie elementy meteorologiczne determinują rozkład przestrzenny wartości wskaźnika. Największe wartości stwierdzono w południowo-wschodniej części województwa, a najmniejsze – w okolicach Warszawy.
    The paper presents an assessment of the Mazovian Province area in terms of possible development of solar energy. The assessment has been made with the use of multi-criteria analysis based on measurement data from the period 1971-2000, derived from 16 weather stations. The study established a unitless suitability index, which can take values from 0 (the least suitable) to 1 (the most suitable). The differences between particular parts of the province are small – the suitability index values range from 0.72 to 0.79. Although other researchers find Mazovia to be homogeneous when it comes to possibilities for development of solar energy, the study shows that meteorological elements determine the spatial distribution of index values, and thereby the suitability for the development of solar energy. The highest values have been found in the southeastern part of the province, and the lowest ones in Warsaw surroundings.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    Comparison of Project Management and Lean Construction in a Real Road Project
    Autorzy:
    Ramos, Gonzalo
    Lozano, Jose-Antonio
    Elkherbawy, Ahmed
    Turmo, Jose
    Wydawca:
    BGJ Consulting
    Opis:
    Project Management, PM, refers to the practice of planning, executing and controlling certain tasks to achieve specific goals at the specified time. Applications of this methodology (such as the Gantt chart) are commonly used in construction road projects. In order to increase productivity and reduce project costs, alternative management approaches (such as the Lean Construction, LC) can be followed. In this approach, the lean manufacturing principles are applied to achieve a delivering value with less waste (or in other words, with lower construction time). The aim of this study is to compare the traditional PM and the LC for the construction process of an actual road built in Cairo (Egypt) between the cities of Cairo and Alexandria. In this study, the analysis of certain parameters (such as the percent plan complete, root cause of delays or the total project duration) will be analysed for different construction scenarios. The results of the paper illustrate the advantages of using LC over the traditional PM approach in road projects.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    High-power and short-duration ablation with the Qdot+ algorithm for pulmonary vein isolation and the right superior ganglion plexus ablation without fluoroscopy
    Autorzy:
    Koźluk, Edward
    Opolski, Grzegorz
    Rodkiewicz, Dariusz
    Piątkowska, Agnieszka
    Wydawca:
    Medical University of Gdańsk
    Cytata wydawnicza:
    Koźluk E, Piątkowska A, Rodkiewicz D, Opolski G. High-power and short-duration ablation with the Qdot+ algorithm for pulmonary vein isolation and the right superior ganglion plexus ablation without fluoroscopy. Eur J Transl Clin Med. 2021;4(2):10-17. DOI: 10.31373/ejtcm/137485
    Opis:
    In this report we present pulmonary vein and posterior box isolation together with the right superior ganglion plexus ablation using the Qdot Micro catheter without fluoroscopy. We describe different possibilities of this new technology for catheter ablation. The main advantages of this catheter to potentially increase ablation safety and effectiveness are discussed. Specifically, the possibility to perform high-density mapping with the lowest available distance between points. Furthermore, the possibility to decrease the risk of collateral tissue damage and to improve atrial linear lesions contiguity, transmurality and durability due to the dominance of resistive heating supported by the feedback temperature control. Finally, the possibility to shorten the procedure and fluoroscopy duration due to the high shortening of application duration to 4 seconds only.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
    Tytuł:
    Polish Antitrust Experience with Hub-and-Spoke Conspiracies
    Autorzy:
    Bolecki, Antoni
    Wydawca:
    Center for Antitrust and Regulatory Studies
    Opis:
    Michał Mijal
    A hub-and-spoke conspiracy involves an exchange of confidential information primarily concerning future prices. The exchange takes place generally between competing distributors via a common supplier but a reverse relationship is also possible. The essence of hub-and-spoke lies in the fact that there is no direct contact between competitors – the party guaranteeing the information flow is normally the common supplier (distributor in a reverse scenario). A hub-and-spoke conspiracy was first identified and specifically described by the British Office of Fair Trade in 2003. There are currently several pending investigations concerning hub-and-spoke practices in a number of EU Member States including Germany, France, Italy and the UK. Three cases of that type have been so far assessed in the Polish antitrust practice: Polifarb Cieszyn Wrocław (2007), Tikurilla (2010) and Akzo Nobel (2010). The main objective of this article is the reconstruction of hub-and-spoke conduct in Poland. Commented will also be issues such as: the connection between hub-and-spoke practices and ‘classic’ retail price maintenance; standard of proof, and duration of the agreements.
    Dostawca treści:
    Repozytorium Centrum Otwartej Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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