Results 31 to 40 of about 171,960 (303)
Harmonic and rational harmonic driving of microresonator soliton frequency combs
Optica, 2020 With demonstrated applications ranging from metrology to telecommunications, soliton microresonator frequency combs have emerged over the past decade as a remarkable new technology. However, standard implementations allow only for the generation of combs whose repetition rate is tied closely to the fundamental resonator free ...
Yiqing Xu +7 more
openaire +2 more sources
Photonic microwave harmonic generator driven by an optoelectronic ring oscillator [PDF]
, 2007 We describe a new architecture to generate microwave signals by optical means. Our system combines the advantages of two techniques: frequency multipliers and loop oscillators.
Le Kernec, Arnaud +2 more
core +1 more source
, 2003 We propose an inductive method to measure critical current density $J_c$ in bulk superconductors. In this method, an ac magnetic field is generated by a drive current $I_0$ flowing in a small coil mounted just above the flat surface of superconductors ...
Mawatari, Yasunori +2 more
core +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Dissipation in a superconducting artificial atom due to a single non-equilibrium quasiparticle
, 2017 We study a superconducting artificial atom which is represented by a single Josephson junction or a Josephson junction chain, capacitively coupled to a coherently driven transmission line, and which contains exactly one residual quasiparticle (or up to ...
Basko, D. M. +2 more
core +2 more sources
An Improved Sideband Current Harmonic Model of Interior PMSM Drive by Considering Magnetic Saturation and Cross-Coupling Effects [PDF]
, 2016 The sideband current harmonics, as parasitic characteristics in permanent-magnet synchronous machine (PMSM) drives with space vector pulsewidth modulation technique, will increase the corresponding electromagnetic loss, torque ripple, vibration, and ...
Fei, Weizhong +2 more
core +1 more source
Aggressive prostate cancer is associated with pericyte dysfunction
Molecular Oncology, EarlyView.Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero +11 more
wiley +1 more source
Jixie chuandong, 2020 In the process of harmonic drive（HD），the double-circular-arc tooth profile（DCTP） can effectively avoid cusp meshing. In order to further optimize the double arc profile and improve the performance of the HD，based on the modified kinematic method exact ...
Anfu Yuan, Shengfeng Qiu, Xukai Shi
doaj
Non-harmonic response of relativistic particle to driving harmonic force
Revista Brasileira de Ensino de Física, 2023 We consider the properties of one-dimensional oscillations of a relativistic particle under a driving harmonic force. It is found that in the general case the speed oscillations are an infinite sum of odd sinusoidal and even cosinusoidal waves. In the limiting case of the ultra-relativistic particle, they represent a square wave.
openaire +3 more sources
Molecular Oncology, EarlyView.Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra +10 more
wiley +1 more source