Results 61 to 70 of about 1,022 (263)

Hot‐Film and Calorimetric Methods With Transient Heating for Measurement of High Biofluid Flow Rate

Advanced Functional Materials, EarlyView.
Accurate measurement of biofluid flow rate is vital for clinical diagnostics. We propose a transient heating strategy using short thermal pulses and peak temperature tracking to enhance the flow sensitivity of the hot‐Film and calorimetric methods. Simulations show how optimal heating time maximizes sensitivity across flow rates.
Yuanting Wei, Shupeng Li, Kyung Rok Pyun, Tianyu Yang, Bosung Kim, Haotian Yang, John A. Rogers, Yonggang Huang, Haohui Zhang   +8 more
wiley   +1 more source

Wave topology of stellar inertial oscillations

Physical Review Research
Inertial waves in convective regions of stars exhibit topological properties linked to a Chern number of 1. The first of these is a unique, unidirectional, prograde oscillation mode within the cavity, which propagates at arbitrarily low frequencies for ...
Armand Leclerc, Guillaume Laibe, Nicolas Perez   +2 more
doaj   +1 more source

Theory of Stellar Oscillations [PDF]

, 2017
Lecture presented at the IVth Azores International Advanced School in Space Sciences on "Asteroseismology and Exoplanets: Listening to the Stars and Searching for New Worlds" (arXiv:1709.00645), which took place in Horta, Azores Islands, Portugal in July ...
openaire   +2 more sources

Excitation and damping of solar and stellar oscillations [PDF]

Symposium - International Astronomical Union, 1988
Variable stars can be broadly classified into two categories: (a) High amplitude pulsators like Cepheids and RR Lyrae variables, (b) Low amplitude pulsators like Sun and Sun-like stars. The study of stellar pulsations has opened the possibility of using the oscillatory modes to probe the internal structure and dynamics of these stars.
openaire   +1 more source

IN4MER Biomaterial Ink: A Phosphorescent Biosensing Biomaterial Ink for Multiple Analytes (Glucose, Lactate, Oxygen) Measurements and Temperature Sensing Applications

Advanced Functional Materials, EarlyView.
Multianalyte, real‐time monitoring of bioprinted scaffolds remains challenging. Phosphorescence‐lifetime–based, optically responsive microparticles are embedded in diverse printable hydrogels (κ‐carrageenan, GelMA, PEGDA) to form biomaterial inks that report oxygen, glucose, lactate, and temperature.
Waqas Saleem, David Chimene, Berkley P. White, Kaivalya A. Deo, Jeremy L. Thomas, Nithin Chidambara, Cole Mandrona, Kirsten Landsgaard, Brian Ko, Roland Kaunas, Akhilesh K. Gaharwar, Michael J. McShane   +11 more
wiley   +1 more source

High-order Gravity-mode Period Spacing Patterns of Intermediate-mass (1.5 M⊙ < M < 3 M⊙) Main-sequence Stars. I. Perturbative Analysis

The Astrophysical Journal
Theoretical study of the high-order gravity-mode period spacing (Δ P _g ) pattern is relevant to a better understanding of the internal properties of intermediate-mass (1.5 M _⊙  
Yoshiki Hatta, Takashi Sekii
doaj   +1 more source

Stellar oscillations in TeVeS

Journal of Physics: Conference Series, 2010
In this work we examine the oscillation spectra of neutron stars in TeVeS. As a result with Cowling approximation, we find that the frequencies of fundamental modes in TeVeS could become lager than those expected in general relativity, while the dependence of frequency of higher overtone on gravitational theory is stronger than that of lower modes ...
openaire   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Antisolar Differential Rotation May Have Revived Magnetic Braking in the Subgiant 31 Aquilae

The Astronomical Journal
Recent observations have shown that sufficiently slow rotation disrupts the organization of large-scale magnetic field in older main-sequence stars, leading to weakened magnetic braking (WMB) and a collapse in the efficiency of the global stellar dynamo.
Travis S. Metcalfe, Jennifer L. van Saders, Thomas R. Ayres, Derek Buzasi, Jeremy J. Drake, Ricky Egeland, Rafael A. García, Oleg Kochukhov, Steven H. Saar, Keivan G. Stassun, Sarbani Basu, J. M. Joel Ong, Amalie Stokholm, Timothy R. Bedding, Sylvain N. Breton, Ilya V. Ilyin, Pascal Petit, Marc H. Pinsonneault, Klaus G. Strassmeier   +18 more
doaj   +1 more source

Stellar Oscillations Network Group – SONG

Journal of Physics: Conference Series, 2008
The Stellar Oscillations Network Group (SONG) is an initiative which aims at designing and building a ground-based network of 1 m telescopes dedicated to the study of phenomena occurring in the time domain. In particular the study of stellar oscillations and the search for and characterisation of extra-solar planets. There will be eight identical nodes
Grundahl, Frank, Arentoft, T., Christensen-Dalsgaard, J., Frandsen, S., Kjeldsen, H., Rasmussen, Per Kjærgaard   +5 more
openaire   +3 more sources