Search Results - "Štefan, David"

Study of the internal flow field in a pump-as-turbine (PaT): Numerical investigation, overall performance prediction model and velocity vector analysis by Štefan, David, Rossi, Mosè, Hudec, Martin, Rudolf, Pavel, Nigro, Alessandra, Renzi, Massimiliano

“…This work presents a detailed analysis of the three-dimensional flows in a Pump-as-Turbine (PaT). The flow field is studied through URANS simulations and a…”
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Installation of an axial Pump-as-Turbine (PaT) in a wastewater sewer of an oil refinery: A case study by Renzi, Massimiliano, Rudolf, Pavel, Štefan, David, Nigro, Alessandra, Rossi, Mosè

“…[Display omitted] •Axial Pump-as-Turbine (PaT) as energy recovery application in oil refineries.•A branch of the groundwater’s wastewater sewer is analysed to…”
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Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump by Chabannes, Lilian, Štefan, David, Rudolf, Pavel

“…The usage of splitter blades to enhance the performances of low specific speed pumps is common practice. Based on experimental and numerical studies, the…”
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Effect of splitter blades on turbine mode of low specific speed pump by Bezdíček, Jiří, Chabannes, Lilian, Štefan, David

“…The use of pump in turbine mode is an evolving research field. This article is mainly focused on the influence of splitter blades on the turbine mode of pump…”
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Study of dynamic vortex structures of an incompressible liquid by Pochylý, František, Štefan, David, Fialová, Simona

“…The study of non-stationary vortex structures arising at the inlet of centrifugal pumps and at the outlet of turbines of the Kaplan and Francis type is the…”
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Stereo PIV measurement of diffuser swirling flow by Procházka, Pavel, Uruba, Václav, Štefan, David, Rudolf, Pavel

“…The swirling flow in a diffuser has been studied using the stereo PIV technique. The DANTEC hardware and software were used for the experiment. The water pipe…”
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Manipulation of the swirling flow instability in hydraulic turbine diffuser by different methods of water injection by Rudolf, Pavel, Litera, Jiří, Alejandro Ibarra Bolanos, Germán, Štefan, David

“…Vortex rope, which induces substantial pressure pulsations, arises in the draft tube (diffuser) of Francis turbine for off-design operating conditions. Present…”
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Characterization of the cavitating flow in converging-diverging nozzle based on experimental investigations by Rudolf, Pavel, Hudec, Martin, Gríger, Milan, Štefan, David

“…Cavitation phenomena occuring in converging-diverging nozzle (Venturi tube) are described in the paper. A closed test circuit with possibility to control both…”
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Manipulation of the swirling flow instability in hydraulic turbine diffuser by different methods of water injection by Rudolf, Pavel, Litera, Jiří, Alejandro Ibarra Bolanos, Germán, Štefan, David

“…Vortex rope, which induces substantial pressure pulsations, arises in the draft tube (diffuser) of Francis turbine for off-design operating conditions. Present…”
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Design of hydraulic recuperation unit by Jandourek, Pavel, Habán, Vladimír, Hudec, Martin, Dobšáková, Lenka, Štefan, David

“…This article deals with design and measurement of hydraulic recuperation unit. Recuperation unit consist of radial turbine and axial pump, which are coupled on…”
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Experimental measurement and numerical modeling of cavitating flow in converging-diverging nozzle by Rudolf, Pavel, Hudec, Martin, Zubík, Pavel, Štefan, David

“…Paper presents results of the experimental research and computational modeling aimed on cavitating vortical structures induced by swirling flow. An…”
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Implementing a multidimensional perioperative delirium curriculum for surgical residents by Robertson, Mariah, Gabbard, Jennifer, David, Stefan, Gearhart, Susan, Chen, Belinda, Picchiello, Matthew, Ward, Hannah, McNabney, Matthew, Oh, Esther

“…Delirium, an acute disorder of attention and cognition, is a frequent and often preventable clinical syndrome that commonly occurs after surgery. Currently,…”
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Male sex workers: practices, contexts, and vulnerabilities for HIV acquisition and transmission by Baral, Stefan David, Dr, Friedman, M Reuel, PhD, Geibel, Scott, PhD, Rebe, Kevin, MBChB, Bozhinov, Borche, MD, Diouf, Daouda, MSc, Sabin, Keith, PhD, Holland, Claire E, MSPH, Chan, Roy, Prof, Cáceres, Carlos F, MD

“…Summary Male sex workers who sell or exchange sex for money or goods encompass a very diverse population across and within countries worldwide. Information…”
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Analysis of protein-DNA interactions in chromatin by UV induced cross-linking and mass spectrometry by Stützer, Alexandra, Welp, Luisa M., Raabe, Monika, Sachsenberg, Timo, Kappert, Christin, Wulf, Alexander, Lau, Andy M., David, Stefan-Sebastian, Chernev, Aleksandar, Kramer, Katharina, Politis, Argyris, Kohlbacher, Oliver, Fischle, Wolfgang, Urlaub, Henning

“…Protein–DNA interactions are key to the functionality and stability of the genome. Identification and mapping of protein–DNA interaction interfaces and sites…”
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Comparative genomic analysis of esophageal adenocarcinoma and squamous cell carcinoma by Agrawal, Nishant, Jiao, Yuchen, Bettegowda, Chetan, Hutfless, Susan M, Wang, Yuxuan, David, Stefan, Cheng, Yulan, Twaddell, William S, Latt, Nyan L, Shin, Eun J, Wang, Li-Dong, Wang, Liang, Yang, Wancai, Velculescu, Victor E, Vogelstein, Bert, Papadopoulos, Nickolas, Kinzler, Kenneth W, Meltzer, Stephen J

“…Esophageal cancer ranks sixth in cancer death. To explore its genetic origins, we conducted exomic sequencing on 11 esophageal adenocarcinomas (EAC) and 12…”
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Effects of water depth and water level fluctuation on the total and bio-available element concentrations in riverine reed stands by Engloner, Attila I., Németh, Kitti, Gere, Dóra, Stefán, Dávid, Óvári, Mihály

“…•Chemical composition in riverine reed stands depends on water depth and water level fluctuation.•Both the total and the bio-available element concentrations…”
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The miR-106b-25 Polycistron, Activated by Genomic Amplification, Functions as an Oncogene by Suppressing p21 and Bim by Kan, Takatsugu, Sato, Fumiaki, Ito, Tetsuo, Matsumura, Nobutoshi, David, Stefan, Cheng, Yulan, Agarwal, Rachana, Paun, Bogdan C, Jin, Zhe, Olaru, Alexandru V, Selaru, Florin M, Hamilton, James P, Yang, Jian, Abraham, John M, Mori, Yuriko, Meltzer, Stephen J

“…Background & Aims Barrett's esophagus (BE) is a highly premalignant disease that predisposes to the development of esophageal adenocarcinoma (EAC); however,…”
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Characterising the impact of COVID-19 environment on mental health, gender affirming services and socioeconomic loss in a global sample of transgender and non-binary people: a structural equation modelling by Restar, Arjee Javellana, Jin, Harry, Jarrett, Brooke, Adamson, Tyler, Baral, Stefan David, Howell, Sean, Beckham, S Wilson

“…BackgroundWe characterised the impact of COVID-19 on the socioeconomic conditions, access to gender affirmation services and mental health outcomes in a sample…”
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MicroRNA‐21 is overexpressed in human cholangiocarcinoma and regulates programmed cell death 4 and tissue inhibitor of metalloproteinase 3 by Selaru, Florin M., Olaru, Alexandru V., Kan, Takatsugu, David, Stefan, Cheng, Yulan, Mori, Yuriko, Yang, Jian, Paun, Bogdan, Jin, Zhe, Agarwal, Rachana, Hamilton, James P., Abraham, John, Georgiades, Christos, Alvarez, Hector, Vivekanandan, Perumal, Yu, Wayne, Maitra, Anirban, Torbenson, Michael, Thuluvath, Paul J., Gores, Gregory J., LaRusso, Nicholas F., Hruban, Ralph, Meltzer, Stephen J.

“…Cholangiocarcinomas (CCAs) are aggressive cancers, with high mortality and poor survival rates. Only radical surgery offers patients some hope of cure;…”
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Silencing of claudin-11 is associated with increased invasiveness of gastric cancer cells by Agarwal, Rachana, Mori, Yuriko, Cheng, Yulan, Jin, Zhe, Olaru, Alexandru V, Hamilton, James P, David, Stefan, Selaru, Florin M, Yang, Jian, Abraham, John M, Montgomery, Elizabeth, Morin, Patrice J, Meltzer, Stephen J

“…Claudins are membrane proteins that play critical roles in tight junction (TJ) formation and function. Members of the claudin gene family have been…”
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