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Wyszukujesz frazę "CVC" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Damage of central catheters in home parenteral nutrition patients
Autorzy:
Błasiak, Renata
Ławiński, Michał
Majewska, Krystyna
Gradowska, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/1394292.pdf
Data publikacji:
2015
Wydawca:
Index Copernicus International
Tematy:
HPN
CVC
Opis:
According to the ESPEN and ASPEN guidelines, in the case of a long-term (>3-month) parenteral nutrition should be administered via a subcutaneous central venous catheter (CVC). There are three types of mechanical complications of tunnelled central catheter: catheter rupture, occlusion by TPN depositing and thrombofibrotic occlusion. The aim of the study was to analyse the incidence of complications central catheter in a group of patients receiving HPN. Material and methods. Between January 2010 and June 2014, HPN was conducted in 584 patients (306 women and 278 men), ninety-nine patients were enrolled in the study: 67 women and 32 men in whom mechanical complications of central catheters were found. Results. Among 99 patients, 71 used the tunnelled Broviac catheter. Groshong catheters were placed only in patients receiving parenteral nutrition due to cancer. Analyses have shown differences between the older and younger in the number of mechanical complications. Younger patients were found to have a larger number of catheter complications (1.6 ± 1.1) in comparison with older patients (1.3 ± 0.7). The catheter that was most commonly damaged was the Broviac catheter 76.8%. The most frequent type of mechanical complications was catheter rupture 64.81%. Conclusions. Mechanical complications of tunnelled central catheters in HPN patients can be repaired in an outpatient setting in half of the cases, which enables continuation of parenteral nutrition without the need to hospitalise the patient. The centres that conduct HPN should offer 24-hour care and help in case of problems with the central venous line to the patients.
Źródło:
Polish Journal of Surgery; 2015, 87, 11; 579-586
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterisation of CVC Yarn with Different Drafting Ratios in Vortex Spinning
Autorzy:
Repon, Md. Reazuddin
Islam, Tarikul
Rahman, Mahbubur
Malek, Md. Abdul
Jalil, Mohammad Abdul
Powiązania:
https://bibliotekanauki.pl/articles/2056286.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
CVC yarn
vortex spinning
tex
draft
ANOVA
Opis:
This study focuses on the impacts of the draft on the characteristics of MVS produced CVC blended yarn. The output of a finisher drawn sliver with a linear density of 3.54 ktex was converted into yarns of 18.45 tex (32 s /1 Ne) with the help of two separate delivery speeds: 350 and 410 m/min when possessing all constant spinning parameters. The properties of the yarn such as yarn anomaly, imperfections, tensile behaviour, and hairiness were investigated. The significance of independent variables and their relations with the physico-mechanical characteristics of CVC yarn was examined using two-way ANOVA at a 95% level of confidence.
Źródło:
Fibres & Textiles in Eastern Europe; 2021, 6 (150); 54--58
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pulse powered turbine engine concept – numerical analysis of influence of different valve timing concepts on thermodynamic performance
Autorzy:
Tarnawski, P.
Ostapski, W.
Powiązania:
https://bibliotekanauki.pl/articles/200911.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pressure gain combustion
PGC
constant volume combustion
CVC
turbine engine
CFD analysis
valve timing
spalanie
silnik turbinowy
analiza CFD
Opis:
The present work is an attempt to create the concept of an engine that will combine the benefits of a pulse powered piston engine and continuously powered turbine engine. The paper focuses on the subject of pressure gain combustion (PGC). A turbine engine concept with stationary constant volume combustors, working according the Humphrey cycle, is presented. Its work has to be controlled by valve timing system. Four different valve timing concepts were analyzed. Their influence on thermodynamic performance of engine was evaluated. Different valve constructions were researched by means of 3D numerical computational fluid dynamics (CFD) simulation.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 3; 373-382
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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