نتایج جستجو برای: quantum efficiency

تعداد نتایج: 673008  

Journal: :به نژادی گیاهان زراعی و باغی 0
مریم بهی کارشناس ارشد رشتة اصلاح نباتات، دانشکدة کشاورزی، دانشگاه محقق اردبیلی، اردبیل- ایران امید سفالیان استادیار گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه محقق اردبیلی، اردبیل - ایران مجید شکرپور استادیار گروه باغبانی دانشکدة کشاورزی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج- ایران علی اصغری دانشیار گروه زراعت و اصلاح نباتات، دانشکدة کشاورزی، دانشگاه محقق اردبیلی، اردبیل- ایران سعید خماری دانشجوی دکترای رشتة بیوتکنولوژی کشاورزی، گروه زراعت و اصلاح نباتات، دانشکدة کشاورزی، دانشگاه محقق اردبیلی، اردبیل- ایران بهنام فیروزی دانشجوی دکترای رشته بیوتکنولوژی کشاورزی، گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه محقق اردبیلی، اردبیل - ایران

in order to evaluation of the relationship among protein markers and traits such as proline content variation, quantum efficiency of photosystem ii and field viability index, 20 genotypes of barely were studied in a randomized complete block design in the greenhouse experiment. plants were transferred to springhouse at the four leaf stage and were located at the temperature of 4°c for three wee...

2011
W. H. P. Pernice C. Schuck O. Minaeva M. Li G. N. Goltsman A. V. Sergienko H. X. Tang

Ultrafast, high quantum efficiency single photon detectors are among the most sought-after elements in modern quantum optics and quantum communication. Close-to-unity photon detection efficiency is essential for scalable measurement-based quantum computation, quantum key distribution, and loophole-free Bell experiments. However, imperfect modal matching and finite photon absorption rates have u...

Journal: :International Journal of Health Sciences (IJHS) 2022

Aspirin, one of the oldest and most widely used anti-inflammatory drugs, has lately been found to lessen incidence cancer. The main pharmacological effects aspirin are thought be generated by its covalent alteration cyclooxygenase-2 (COX-2) via acetylation Ser530. However, exact biochemical mechanism specificity how it works have yet figured out. In modern times, there a lot research done on qu...

Journal: :Optics express 2014
Che-Pin Tsai Shun-Chieh Hsu Shih-Yen Lin Ching-Wen Chang Li-Wei Tu Kun-Cheng Chen Tsong-Sheng Lay Chien-chung Lin

A type II GaSb quantum ring solar cell is fabricated and measured under the concentrated sunlight. The external quantum efficiency confirms the extended absorption from the quantum rings at long wavelength coinciding with the photoluminescence results. The short-circuit current of the quantum ring devices is 5.1% to 9.9% more than the GaAs reference's under various concentrations. While the qua...

Journal: :Optics express 2005
Guoqiang Cui M Raymer

We calculate the integrated-pulse quantum efficiency of single-photon sources in the cavity quantum electrodynamics (QED) strong-coupling regime. An analytical expression for the quantum efficiency is obtained in the Weisskopf-Wigner approximation. Optimal conditions for a high quantum efficiency and a temporally localized photon emission rate are examined. We show the condition under which the...

  Effects of quantum size and potential shape on the spectra of an electron and a hydrogenic-donor at the center of a permeable spherical cavity have been calculated, using linear variational method. B-splines have been used as basis functions. By extensive convergence tests and comparing with other results given in the literature, the validity and efficiency of the method were confirmed.

1996
G. Vasileiadis G. Malamud D. Vartsky

We measured the relative quantum efficiency of four organic materials: tetrathiafulvalene and bis(cyclopentadienyl)magnesium in the solid phase and t-butylferrocene and n-butylferrocene in the vapour phase. The measurements were performed in the wavelength range of 150-220 nm. We also present a new quantum efficiency measurement of ethylferrocene. The three ferrocene derivatives exhibit relativ...

2007
Y.-L. Li Y.-R. Huang

InGaN/GaN multiple-quantum-well MQW light-emitting diodes with varied InGaN quantum well thicknesses are fabricated and characterized. The investigation of luminous efficiency versus current density reveals a variety of efficiency droop behaviors. It is found that the efficiency droop can be drastically reduced by increasing the quantum well thickness of the MQW structures. On the other hand, r...

2003
D. G. Pelli

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