Results 21 to 30 of about 882,373 (307)

Norway spruce (Picea abies (L.) H. Karst.) selection forests at Siljansfors in Central Sweden

open access: yesTrees, Forests and People, 2023
Continuous cover forestry (CCF) is a type of forest management which is based on ecological principles and avoids clearfelling as much as possible. A specialised form of CCF is the selection system which relies on inhomogeneous size structures in mixed ...
Ludwig Olofsson   +2 more
doaj  

Enhanced FANO Structure Based on Tip-Field-Enhancement Theory

open access: yesApplied Sciences, 2019
High-Q metasurfaces have attracted much interest owing to their potential application in biological sensors. FANO is a type of high-Q factor metasurface.
Tianchi Zhou   +6 more
doaj   +1 more source

Quality factor control of mechanical resonators using variable phononic bandgap on periodic microstructures

open access: yesScientific Reports, 2022
The quality factor (Q-factor) is an important parameter for mechanical resonant sensors, and the optimal values depend on its application. Therefore, Q-factor control is essential for microelectromechanical systems (MEMS).
Naoki Inomata, Yuka Tonsho, Takahito Ono
doaj   +1 more source

Air Damping Analysis of a Micro-Coriolis Mass Flow Sensor

open access: yesSensors, 2022
A micro-Coriolis mass flow sensor is a resonating device that measures small mass flows of fluid. A large vibration amplitude is desired as the Coriolis forces due to mass flow and, accordingly, the signal-to-noise ratio, are directly proportional to the
Yaxiang Zeng   +3 more
doaj   +1 more source

Defocus Curve and Satisfaction of Patients with Presbyopia After LASIK Using the Differential Modulation of Binocular Longitudinal Spherical Aberration

open access: yesClinical Ophthalmology, 2023
Jun Zhang, Jie Shao, Xinfang Cao, Yonggang Zhang, Li Zheng Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, People’s Republic of ChinaCorrespondence: Jun Zhang, Hangzhou MSK Eye Hospital, No. 384, Fengqi Road, Gongshu District, Hangzhou,
Zhang J, Shao J, Cao X, Zhang Y, Zheng L
doaj  

Viscoelastic modeling and factor Q for reflection data

open access: yesGeofísica Internacional, 2012
Los modelos numéricos viscoelásticos, basados en el concepto de mecanismos de dispersión, toman en cuenta las variables de memoria y algunos parámetros de dispersión, a saber los tiempos de relajación de tensión. En la práctica de la geofísica, el factor
Vladimir Sabinin
doaj   +1 more source

Is coenzyme Q a key factor in aging?

open access: yesMechanisms of Ageing and Development, 2010
Coenzyme Q (Q) is a key component for bioenergetics and antioxidant protection in the cell. During the last years, research on diseases linked to Q-deficiency has highlighted the essential role of this lipid in cell physiology. Q levels are also affected during aging and neurodegenerative diseases.
López-Lluch, Guillermo   +3 more
openaire   +4 more sources

A 5.86 Million Quality Factor Cylindrical Resonator with Improved Structural Design Based on Thermoelastic Dissipation Analysis

open access: yesSensors, 2020
The cylindrical resonator is the core component of cylindrical resonator gyroscopes (CRGs). The quality factor (Q factor) of the resonator is one crucial parameter that determines the performance of the gyroscope. In this paper, the finite element method
Libin Zeng   +7 more
doaj   +1 more source

Overstrength and ductility factors of XBF structures with pinned and fixed supports

open access: yesStudia Geotechnica et Mechanica, 2023
In today's time, most seismic design codes are based on a linear elastic force-based approach that includes the nonlinear response (ductility and overstrength) of the structure through a reduction factor (named behavior factor q in Eurocode 8 [EC8 ...
Yahmi Djamal   +3 more
doaj   +1 more source

Reply : Q-factor customized ablations

open access: bronzeJournal of Cataract and Refractive Surgery, 2006
Theo Seiler   +2 more
openalex   +3 more sources

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