Results 41 to 50 of about 3,181,689 (295)

Fast Load Control with Stochastic Frequency Measurement [PDF]

, 2011
Matching demand with supply and regulating frequency are key issues in power system operations. Flexibility and local frequency measurement capability of loads offer new regulation mechanisms through load control.
Low, Steven H., Topcu, Ufuk, Zhao, Changhong   +2 more
core   +1 more source

Robust, frequency-stable and accurate mid-IR laser spectrometer based on frequency comb metrology of quantum cascade lasers up-converted in orientation-patterned GaAs

, 2013
We demonstrate a robust and simple method for measurement, stabilization and tuning of the frequency of cw mid-infrared (MIR) lasers, in particular of quantum cascade lasers.
Ernsting, Ingo, Grisard, Arnaud, Gérard, Bruno, Hansen, Michael G., Lallier, Eric, Schiller, Stephan, Vasilyev, Sergey V.   +6 more
core   +1 more source

A PRSZT Registry Analysis of Prognostic Factors Influencing Survival and Relapse Rates After Second Allogeneic Hematopoietic Stem Cell Transplantation in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT A second allogeneic (allo‐)hematopoietic stem cell transplantation (HSCT2) is a potential curative option for pediatric patients with acute lymphoblastic leukemia (ALL) following relapse after first allogeneic transplantation (HSCT1), but its efficacy is limited by high relapse rates and transplant‐related toxicity in highly pretreated ...
Ava Momm, Imme Haubitz, Rita Beier, Martin Zimmermann, Andrej Lissat, Peter Bader, Matthias Eyrich, Jan‐Henning Klusmann, Matthias Wölfl, Paul‐Gerhardt Schlegel, Verena Wiegering   +10 more
wiley   +1 more source

Frequency-Modulated Signal Measurement Using Closed-Loop Methodology

Sensors, 2022
Frequency-modulated (FM) signals are widely used in sensing, measurement, and signal detection due to their strong anti-interference and easy transmission characteristics.
Xinglin Sun, Haojie Wu, Xinyue Tan, Wenrui Wang, Lingyun Ye, Kaichen Song   +5 more
doaj   +1 more source

Ultrafast electrooptic dual-comb interferometry [PDF]

, 2015
The femtosecond laser frequency comb has enabled the 21st century revolution in optical synthesis and metrology. A particularly compelling technique that relies on the broadband coherence of two laser frequency combs is dual-comb interferometry.
Duran, Vicente, Tainta, Santiago, Torres-Company, Victor   +2 more
core   +2 more sources

Evaluation of the Utility of Baseline Echocardiogram in Patients With Standard Risk Precursor B‐Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
Abstract Background A routine baseline echocardiogram is often obtained prior to anthracycline administration in children with cancer. The utility of baseline echocardiogram is unclear in patients with standard risk B‐cell acute lymphoblastic leukemia (SR B‐ALL) as their anthracycline cumulative dose is low.
Ziyad Alrajhi, Alice Pozza, Luc Mertens, Adam Paul Yan, Sarah Alexander   +4 more
wiley   +1 more source

Quantum double lock-in amplifier

Communications Physics
Quantum lock-in amplifiers have been proposed to extract an alternating signal from a strong noise background. However, due to the typical target signal has unknown initial phase, it is challenging to extract complete information about the signal’s ...
Sijie Chen, Min Zhuang, Ruihuang Fang, Yun Chen, Chengyin Han, Bo Lu, Jiahao Huang, Chaohong Lee   +7 more
doaj   +1 more source

A Three-Dimensional Reconstruction Method Based on Telecentric Epipolar Constraints

Photonics
When calibrating a microscopic fringe projection profile system with a telecentric camera, the orthogonality of the camera causes an ambiguity in the positive and negative signs of its external parameters.
Qinsong Li, Zhendong Ge, Xin Yang, Xianwei Zhu   +3 more
doaj   +1 more source

Precision spectroscopy and density-dependent frequency shifts in ultracold Sr

, 2005
By varying the density of an ultracold $^{88}$Sr sample from $10^9$ cm$^{-3}$ to $> 10^{12}$ cm$^{-3}$, we make the first definitive measurement of the density-related frequency shift and linewidth broadening of the $^1S_0$ - $^3P_1$ optical clock ...
Andrew D. Ludlow, J. Ye, Jun Ye, Kevin W. Holman, Martin M. Boyd, Tetsuya Ido, Thomas H. Loftus, X. Y. Xu   +7 more
core   +1 more source

Detection of nonmagnetic metal thin film using magnetic force microscopy [PDF]

, 2018
Magnetic force microscopy (MFM) allows detection of stray magnetic fields around magnetic materials and the two-dimensional visualization of these fields.
Abo, Satoshi, Kajiwara, Masahiro, Oosawa, Kenta, Takai, Mikio, Wakaya, Fujio   +4 more
core   +2 more sources