Results 121 to 130 of about 472,506 (348)

Acoustic and aerodynamic performance of a 1.83-meter (6-ft) diameter 1.25-pressure-ratio fan (QF-8) [PDF]

open access: yes
A 1.25-pressure-ratio 1.83-meter (6-ft) tip diameter experimental fan stage with characteristics suitable for engine application on STOL aircraft was tested for acoustic and aerodynamic performance.
Lucas, J. G., Woodward, R. P.
core   +1 more source

Laser spectroscopic studies of the pure rotational U_0(0) and W_0(0) transitions of solid parahydrogen [PDF]

open access: yes, 1991
High resolution spectrum of multipole-induced transitions of solid parahydrogen was recorded using diode and difference frequency laser spectroscopy.
Chan, Man-Chor   +3 more
core  

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo   +4 more
wiley   +1 more source

Epidemiological Profile of Hearing Deficiency in a Tertiary Care Hospital (2019-2022)

open access: yesBengal Journal of Otolaryngology and Head Neck Surgery
Introduction This study is an attempt to view the demographic profile of individuals presenting with hearing loss in an urban referral hospital with the help of available database of pure tone audiometry results over a three years period. Materials
Indranil Sen   +2 more
doaj   +1 more source

Multiple pure tone noise generated by fans at supersonic tip speeds [PDF]

open access: yes
The existence of clusters of pure tones at integral multiples of shaft speed has been noted for supersonic-tip-speed operation of fans and compressors.
Pickett, G. F., Sofrin, T. G.
core   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Difference in Thresholds Between Auditory Brainstem Response Test and Pure Tone Audiometry by Frequency [PDF]

open access: diamond, 2022
Taehun Lim   +5 more
openalex   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

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