324,172 research outputs found
Short- and long-term results of intracoronary Wiktor stent implantation in chronic total coronary occlusion
No full textBackground: Percutaneous transluminal coronary angioplasty (PTCA) of chronic total coronary artery occlusions is associated with very high restenosis and reocclusion rates. Coronary stenting has been proposed as a means of improving outcome. However, the Wiktor device for chronic coronary occlusion has never been tested in a large patient sample. This study reports the first multicenter experience with the Wiktor stent for treatment of chronic occlusions. METHODS. From January 1993 to December 1996, 89 consecutive patients with 91 chronic occlusions underwent Wiktor stent implantation after successful PTCA. Post-stenting regimen consisted of coumadin plus aspirin in the first 49 (55%) patients and aspirin plus ticlopidine in the following 40 (45%). RESULTS. Stenting was successful in 87 (98%) patients. At 1 month, 6% of patients had subacute stent thrombosis, 1% access-site complications and 3% major bleeding events. Stent thrombosis showed a univariate association with coumadin therapy (p = 0.009). Angiographic follow-up was obtained in 93% of 82 eligible patients. Restenosis rate was 32%, including 4% reocclusions. Through multiple logistic regression analysis, restenosis was independently associated with multiple stents (odds ratio - OR = 27.67, 95% confidence interval - CI = 4.25 to 79.95, p = 0.0008) and increasing values of occlusion length (OR = 1.23, 95% CI = 1.09 to 1.39, p = 0.001). Freedom from death, myocardial infarction or stented vessel revascularization was 87 and 72% at one and three years, respectively. CONCLUSIONS. Short and long-term clinical and angiographic outcomes are favorable in patients undergoing Wiktor stent implantation for chronic coronary occlusion. Further technical refinements are needed to reduce restenosis rate in patients with long lesions and multiple stents
Wykorzystanie testu Production Logging dla określenia stref dopływu wody do studni wielkośrednicowych
No full textTyt. z nagłówka.Pozostali autorzy artykułu: Jan Macuda, Wiktor Gądek, Józef Nowak.Bibliografia s. 626.Dostępny również w formie drukowanej.STRESZCZENIE: W artykule przedstawiono metodykę pomiarów, sposoby prezentacji danych oraz wyniki interpretacji profilowań zarejestrowanych sondą Production Log (PL) w ramach testu produkcyjnego w otworach hydrogeologicznych. Dla zobrazowania opisanej metodyki pomiarów produkcyjnych i ich interpretacji przedstawiono wyniki analizy pomiarów z otworu M-1 służącego jako studnia dostarczająca wodę termalną, otworu K-3 przeznaczonego do zrzutu zasolonych wód kopalnianych oraz otworu geotermalnego SS-1. SŁOWA KLUCZOWE: Production Log, studnie wielkośrednicowe, przepływ wody do otworu. ABSTRACT: Measurement methodic, data presentation modes and results of interpretation of profiling made with the use of a Production Log (PL) within a production test in hydrogeologic wells are presented in the paper. The described measuring methodic and interpretation are presented on the example of data from the geothermal well M-1, well K-3 for discharging mine's waste brine, and geothermal well SS-1. KEYWORDS: Production Log, large diameter wells, water flux
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Safety, quality, and processing of fruits and vegetables
No full textNowadays, one of the main objectives of the fruit and vegetable industry is to develop innovative novel products with high quality, safety, and optimal nutritional characteristics in order to respond with efficiency to the increasing consumer expectations. Various emerging, unconventional technologies (e.g., pulsed electric field, pulsed light, ultrasound, high pressure, and microwave drying) enable the processing of fruits and vegetables, increasing their stability while preserving their thermolabile nutrients, flavour, texture, and overall quality. Some of these technologies can also be used for waste and by-product valorisation. The application of fast noninvasive methods for process control is of great importance for the fruit and vegetable industry. The following Special Issue “Safety, Quality, and Processing of Fruits and Vegetables” consists of 11 papers, which provide a high-value contribution to the existing knowledge on safety aspects, quality evaluation, and emerging processing technologies for fruits and vegetables
Adam Mickiewicz comme intermédiaire entre le génie de Puškin et l'opinion littéraire française
No full textWiktor Woroszylski, The part played by Adam Mickiewicz. as an intermediary between the genius of Pushkin and the opinion of the French literary world.
The present article examines the role of the Polish poet Adam Mickiewicz as an intermediary between Pushkin and the French public opinion in the late 1830's and early 1840's, acquainting the literary circles of France with the Russian poet's work, life history and their significance in the context of Russian society and culture. At the time, Pushkin was not well known in the West. Though the circumstances of his death had awakened attention, the lack of good translations and ignorance of the specificity of Russian life did not contribute to a good understanding of the poet's destiny. Mickiewicz - then an emigre in Paris - was the first to expound (in the necrology he published in Le Globe and in his lectures at the College de France) the determining influence exercised by the power then ruling in Russia on the fate that had overtaken the poet.Wiktor Woroszylski, Adam Mickiewicz comme intermédiaire entre le génie de Puškin et l'opinion littéraire française. L'article étudie le rôle qu'a joué le poète polonais Adam Mickiewicz comme intermédiaire entre Puškin (son œuvre, sa vie, leur signification dans la société et la culture russes) et l'opinion française à la fin des années 1830 et au début des années 1840. Puškin était alors peu connu en Occident ; les circonstances de sa mort attirèrent l'attention du public, mais l'absence de bonnes traductions et l'ignorance des particularités de la vie russe n'aidaient pas à comprendre le destin du poète. Mickiewicz, alors dans l'émigration à Paris, a été le premier à expliquer (dans sa nécrologie parue dans Le Globe et dans son cours au Collège de France) comment le destin du poète russe avait été déterminé par le caractère du pouvoir qui régnait alors en Russie.Woroszylski Wiktor. Adam Mickiewicz comme intermédiaire entre le génie de Puškin et l'opinion littéraire française. In: Cahiers du monde russe et soviétique, vol. 32, n°2, Avril-juin 1991. pp. 189-196
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
