Results 21 to 30 of about 723,434 (119)

Understanding the L-H isotope effect at the DIII-D tokamak and advancements in synthetic turbulence diagnostics

Nuclear Fusion
It is determined that while heat flux differences between hydrogen and deuterium isotope experiments result from natural differences in carbon impurity content at DIII-D, it is not the origin of the low to high confinement mode (L-H) transition isotope ...
K.J. Callahan, L. Schmitz, Q. Pratt, T.A. Carter, G. Wang, H. Zhang, C. Holland, S.R. Haskey, A. Angulo, A. Bortolon, F. Effenberg, E.A. Belli, C. Chrystal, K.E. Thome, A. Ashourvan, T. Neiser, M. Knolker, F. Khabanov, Z. Yan, G.R. McKee, R. Chaban, R.S. Wilcox, A. Holm, F. Scotti, D. Truong, R. Gerrú   +25 more
doaj   +1 more source

Phase Transition and Thermal Expansion of Ba3RB3O9 (R = Sm–Yb, and Y)

High Temperature Materials and Processes, 2017
High temperature powder X-ray diffraction measurements of Ba3RB3O9 (R=Sm–Yb, and Y) were carried out at temperatures ranging from room temperature to just below the corresponding melting temperatures (1,200–1,300 °C).
Simura Rayko, Kawai Shohei, Sugiyama Kazumasa   +2 more
doaj   +1 more source

The feasibility of the L-H transition for a purely electron-heated EU-DEMO tokamak

Nuclear Fusion
We study numerically the feasibility of achieving the L-H transition in the current EU-DEMO tokamak baseline using uniquely direct electron heating. The ASTRA code coupled to the TGLF turbulent transport model is used to predict steady-state kinetic ...
G. Suárez López, G. Tardini, E. Fable, M. Siccinio, H. Zohm   +4 more
doaj   +1 more source

Effects of a Dietary L-Carnitine Supplementation on Performance, Energy Metabolism and Recovery from Calving in Dairy Cows

Animals, 2020
Dairy cows are metabolically challenged during the transition period. Furthermore, the process of parturition represents an energy-consuming process.
Jennifer Meyer, Susanne Ursula Daniels, Sandra Grindler, Johanna Tröscher-Mußotter, Mohamadtaher Alaedin, Jana Frahm, Liane Hüther, Jeannette Kluess, Susanne Kersten, Dirk von Soosten, Ulrich Meyer, Erika Most, Klaus Eder, Helga Sauerwein, Jana Seifert, Korinna Huber, Jürgen Rehage, Sven Dänicke   +17 more
doaj   +1 more source

Transition Gas Flow Between Two Parallel Plates with a Slit-Type Obstacle of Various Geometry by Event Driven Molecular Dynamics Simulation

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In this study, pressure-driven flow through a slit-type obstacle with various length (L) and height (H) placed in between two parallel plates was investigated by Event Driven Molecular Dynamics (EDMD) simulation.
Volkan Ramazan Akkaya, İlyas Kandemir, Mustafa Koç   +2 more
doaj   +1 more source

Empirical scaling of the L–H threshold power for metal wall tokamaks using a multi-device database

Nuclear Fusion
The empirical scaling for the H-mode power threshold in tokamaks has been revisited using a database with threshold data from machines with a metallic first wall as part of International Tokamak Physics Activity (ITPA) task TC-26.
E. Delabie, E.R. Solano, J.W. Hughes, C.F. Maggi, F. Ryter, G. Birkenmeier, P. Carvalho, M. Cavedon, M. Chernyshova, P. David, J. Hillesheim, U. Plank, the EUROfusion Tokamak Exploitation Team, the ASDEX Upgrade Team, JET Contributors   +14 more
doaj   +1 more source

Interplay between beam-driven chirping modes and plasma confinement transitions in spherical tokamak ST40

Nuclear Fusion, 2022
Experiments on the high field spherical tokamak ST40 have led to the recent observation of interplay between beam-driven modes of sweeping frequency (chirping modes) and transitions to the enhanced global confinement regime (H-mode) and back to the low ...
J. Bland, J. Varje, N.N. Gorelenkov, M.P. Gryaznevich, S.E. Sharapov, J. Wood, Team The ST40   +6 more
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Titanium and Vanadium Complexes of Tridentate Phenoxy-Imine and Phenoxy-Amine Ligands and Their Application in the Ring-Opening Polymerization of Cyclic Esters

Molecules, 2023
Phenoxy-imine and phenoxy-amine proligands, with the additional OH donor groups 2,4-tBu2-6-(2-CH2(OH)-C6H4N=CH)C6H3OH (L1H2), 6-(2-CH2(OH)-C6H4N=CH)C6H3OH (L2H2), and 2,4-tBu2-6-(2-CH2(OH)-C6H4NH-CH)C6H3OH (L3H2), were synthesized and their titanium (Ti ...
Marzena Białek, Alicja Klimasińska, Grzegorz Spaleniak, Błażej Dziuk   +3 more
doaj   +1 more source

Impact of nitrogen seeding on L–H transitions and their role for detachment in ASDEX Upgrade

Nuclear Fusion
The required heating power, $P_{\mathrm{LH}}$ , to access the high confinement regime (H-mode) in nitrogen seeded deuterium plasmas is investigated at the ASDEX Upgrade tokamak. It is shown that a stepwise increase of the nitrogen seeding level increases
G. Birkenmeier, M. Bernert, D. Brida, P. David, R. Fischer, T. Happel, B. Kurzan, T. Lunt, F. Ryter, E. Wolfrum, the ASDEX Upgrade Team   +10 more
doaj   +1 more source

Interaction Between Dietary Lipid Level and Seasonal Temperature Changes in Gilthead Sea Bream Sparus aurata: Effects on Growth, Fat Deposition, Plasma Biochemistry, Digestive Enzyme Activity, and Gut Bacterial Community

Frontiers in Marine Science, 2021
A 121-day feeding trial was undertaken to test the effects of two dietary lipid levels (16 and 21% L16, L21) in triplicated gilthead sea bream groups (initial weight: 67.5 g) reared at two different water temperatures (high, H 23°C and low, L 17°C) in ...
Nicole Francesca Pelusio, Daniel Scicchitano, Luca Parma, Francesco Dondi, Elisa Brini, Federica D’Amico, Marco Candela, Manuel Yúfera, Neda Gilannejad, Francisco Javier Moyano, Pier Paolo Gatta, Alessio Bonaldo   +11 more
doaj   +1 more source