Results 31 to 40 of about 7,065,211 (348)

A Novel High Q Lamé-Mode Bulk Resonator with Low Bias Voltage

Micromachines, 2020
This work reports a novel silicon on insulator (SOI)-based high quality factor (Q factor) Lamé-mode bulk resonator which can be driven into vibration by a bias voltage as low as 3 V. A SOI-based fabrication process was developed to produce the resonators
Tianyun Wang, Zeji Chen, Qianqian Jia, Quan Yuan, Jinling Yang, Fuhua Yang   +5 more
doaj   +1 more source

Modelization Methodology for the Quality Factor of Quarter-Wavelength n-Section Coaxial Stepped Impedance Resonators

IEEE Journal of Microwaves, 2022
This paper proposes a method to develop an analytical model and/or numerical resolution of the quality factor of quarter-wavelength n-section coaxial stepped impedance resonators (SIRs).
Jessica Benedicto, Jean-Francois Favennec, Alejandro Buitrago Bernal, Eric Rius   +3 more
doaj   +1 more source

Integrated high quality factor lithium niobate microdisk resonators

, 2014
Lithium Niobate (LN) is an important nonlinear optical material. Here we demonstrate LN microdisk resonators that feature optical quality factor ~ 100,000, realized using robust and scalable fabrication techniques, that operate over a wide wavelength ...
Atikian, Haig A., Burek, Michael J., Huang, I-Chun, Lin, Zin, Lončar, Marko, Stark, Peter, Venkataraman, Vivek, Wang, Cheng   +7 more
core   +1 more source

Analysis of 19-inch and metric mechanical structures for electronic equipment

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015
The paper deals with the research and analysis of various quality indicators of the standard mechanical structures of two constructional systems in order to define and compare their characteristics, and to predict prospects for their use.
A. A. Yefimenko, A. P. Karlangach
doaj   +1 more source

Fabrication of high-quality-factor photonic crystal microcavities in InAsP/InGaAsP membranes [PDF]

, 2004
Optical fiber taper waveguides are used to improve the efficiency of room temperature photoluminescence measurements of AlGaAs microdisk resonant cavities with embedded self-assembled InAs quantum dots.
Adachi, Alfred Y. Cho, Fujiwara, Hwang, Jianxin Chen, Kartik Srinivasan, Mounaix, Oskar Painter, Painter, Painter, Painter, Paul E. Barclay, Rommel, Ryu, Srinivasan, Srinivasan, Srinivasan, Tanaka   +17 more
core   +1 more source

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar, Denise M. Connolly, Ellen Kellington, Elyse Zelunka, Karla Kerrigan, Furqan Shaikh, Paul C. Nathan, Meredith S. Irwin, Sarah Cohen‐Gogo   +8 more
wiley   +1 more source

Optimization of the Spatial Configuration of Local Defects in Phononic Crystals for High Q Cavity

Frontiers in Mechanical Engineering, 2020
Defects can be introduced within a 2-D periodic lattice to realize phononic cavities or phononic crystal (PnC) waveguides at the ultrasonic frequency range. The arrangement of these defects within a PnC lattice results in the modification of the Q factor
Delfino Reyes, Delfino Reyes, David Martínez, Miguel Mayorga, Hyeonu Heo, Ezekiel Walker, Ezekiel Walker, Arup Neogi   +7 more
doaj   +1 more source

Very high quality factor measured in annealed fused silica

, 2004
We present the results of quality factor measurements for rod samples made of fused silica. To decrease the dissipation we annealed our samples. The highest quality factor that we observed was $Q=(2.03\pm0.01)\times10^8$ for a mode at 384 Hz. This is the
Alexandr Ageev, Antonio De Felice, Bartenev G M, Belkis Cabrera Palmer, Braginsky V B, Danzmann K, Giazotto A, Harry G, Lunin B, Lunin B S Torbin S N, Numata K, Peter R Saulson, Steven D Penn, Tsubono K, Willems P, Zdaniewski W A, Zener C   +16 more
core   +1 more source

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis, Okeleji Olayinka, Mariam Z. Quraishi, Lakshmi V. Srivaths, Deborah L. Brown, Neethu M. Menon, Ricardo A. Mosquera, Ashwin P. Patel, James M. Stark, Aravind Yadav   +9 more
wiley   +1 more source

TMT-based quantitative proteomic analysis reveals eggshell matrix protein changes correlated with eggshell quality in Jing Tint 6 laying hens of different ages

Poultry Science
: The decline in eggshell quality resulting from aging hens poses a threat to the financial benefits of the egg industry. The deterioration of eggshell quality with age can be attributed to changes in its ultrastructure and chemical composition. Specific
Dan-rong Zhao, Li-bing Gao, Fei Gong, Jia Feng, Hai-jun Zhang, Shu-geng Wu, Jing Wang, Yu-na Min   +7 more
doaj   +1 more source