Results 41 to 50 of about 172,763 (302)

Quadrupole collective modes in trapped finite-temperature Bose-Einstein condensates

, 2002
Finite temperature simulations are used to study quadrupole excitations of a trapped Bose-Einstein condensate. We focus specifically on the m=0 mode, where a long-standing theoretical problem has been to account for an anomalous variation of the mode ...
B. Jackson, B. Jackson, B. Jackson, B. Jackson, D. A. W. Hutchinson, D. S. Jin, D. S. Jin, E. Zaremba, E. Zaremba, F. Dalfovo, J. Reidl, M. J. Bijlsma, M. Rusch, M.-O. Mewes, O. M. Maragò, P. O. Fedichev, R. A. Duine, S. A. Morgan, S. Giorgini, S. Stringari, U. Al Khawaja   +20 more
core   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Master/slave manipulator system [PDF]

, 1973
System capabilities are equivalent to mobility, dexterity, and strength of human arm. Arrangement of torque motor, harmonic drive, and potentiometer combination allows all power and control leads to pass through center of slave with position-transducer ...
King, R. F., Vallotton, W. C., Vykukal, H. C.   +2 more
core   +1 more source

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Meshing Stiffness Calculation of Disposable Harmonic Drive under Full Load

Machines, 2022
Mechanical equipment in the field of aerospace that is used only once is called disposable machinery. As a piece of typical disposable machinery, disposable harmonic gear exhibit stiffness failure with a large load.
Yuxin Zhang, Xudong Pan, Yuefeng Li, Guanglin Wang, Guicheng Wu   +4 more
doaj   +1 more source

Second Harmonic Coherent Driving of a Spin Qubit in a Si/SiGe Quantum Dot

, 2015
We demonstrate coherent driving of a single electron spin using second harmonic excitation in a Si/SiGe quantum dot. Our estimates suggest that the anharmonic dot confining potential combined with a gradient in the transverse magnetic field dominates the
Coppersmith, S. N., Eriksson, M. A., Friesen, Mark, Kawakami, E., Lagally, M. G., Savage, D. E., Scarlino, P., Vandersypen, L. M. K., Ward, D. R.   +8 more
core   +1 more source

Parametric frequency mixing in the magneto-elastically driven FMR-oscillator [PDF]

, 2016
We demonstrate the nonlinear frequency conversion of ferromagnetic resonance (FMR) frequency by optically excited elastic waves in a thin metallic film on dielectric substrates.
Chang, C. L., Janusonis, J., Lomonosov, A. M., Temnov, V. V., Tobey, R. I., Vlasov, V. S.   +5 more
core   +3 more sources

Microglial dynamics and ferroptosis induction in human iPSC‐derived neuron–astrocyte–microglia tri‐cultures

FEBS Open Bio, EarlyView.
A tri‐culture of iPSC‐derived neurons, astrocytes, and microglia treated with ferroptosis inducers as an Induced ferroptosis model was characterized by scRNA‐seq, cell survival, and cytokine release assays. This analysis revealed diverse microglial transcriptomic changes, indicating that the system captures key aspects of the complex cellular ...
Hongmei Lisa Li, Hiroko Ohmiya, Sou Sakamoto, Masato Yugami, Akiko Oki, Makoto Furusawa, Yan Ling   +6 more
wiley   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Unraveling the Vibration Mechanism in Robotic Harmonic Drive: Coupled Dynamics Under Cyclic Inertial Loading and Installation Errors

Machines
As a key component in robots, the harmonic drive directly impacts the reliability and lifespan of the whole system. Due to the cyclic inertial loading and installation errors, the harmonic drive possesses unique but complicated vibration features.
Guolin He, Bin Zhou, Yuan Zheng, Huibin Lin, Lei Xu, Ziheng Zheng   +5 more
doaj   +1 more source