نتایج جستجو برای: unidirectional pumping mode

تعداد نتایج: 245667  

2003
Y. F. Chen

We present an efficient diode-end-pumped passively mode-locked Nd:YVO4 laser with a relaxed single-quantum-well saturable Bragg reflector (SBR), which average output power is more than 23 W and pulse duration 2 1 .5 ps cw modelocking is generated corresponding to 50 W pumping power. The overall optical-optical efficiency reaches 47% and to our knowledge, this is the highest conversion efficienc...

Journal: :تحقیقات مهندسی کشاورزی 0
سیدمعین الدین رضوانی عضو هیئت علمی بخش تحقیقات فنی و مهندسی کشاورزی مرکز تحقیقات کشاورزی و منابع طبیعی همدان علی محمد جعفری عضو هیئت علمی دفتر پژوهش های برنامه ریزی، اقتصاد کشاورزی و توسعه روستایی مرکز تحقیقات کشاورزی و منابع طبیعی همدان سیف الله امین استاد دانشکده کشاورزی دانشگاه شیراز

pressurized irrigation is a recent development that consumes more energy for the pressure produced. in thisstudy, energy consumption, waste and efficiency were investigated at a diesel and electrical sprinklerirrigation pumping plant in some fields in hamadan province during 2007-8. nebraska performance criteria(npc) were used to compare sprinkler irrigation pumping plant performance. the resul...

2011
María Mittelbrunn Cristina Gutiérrez-Vázquez Carolina Villarroya-Beltri Susana González Fátima Sánchez-Cabo Manuel Ángel González Antonio Bernad Francisco Sánchez-Madrid

The immune synapse is an exquisitely evolved means of communication between T cells and antigen-presenting cells (APCs) during antigen recognition. Recent evidence points to the transfer of RNA via exosomes as a novel mode of intercellular communication. Here we show that exosomes of T, B and dendritic immune cells contain microRNA (miRNA) repertoires that differ from those of their parent cell...

2016
Olga Wid Jan Bauer Alexander Müller Otwin Breitenstein Stuart S. P. Parkin Georg Schmidt

We have investigated the unidirectional spin wave heat conveyer effect in sub-micron thick yttrium iron garnet (YIG) films using lock-in thermography (LIT). Although the effect is small in thin layers this technique allows us to observe asymmetric heat transport by magnons which leads to asymmetric temperature profiles differing by several mK on both sides of the exciting antenna, respectively....

Journal: :I. J. Bifurcation and Chaos 2004
Syamal Kumar Dana Satyabrata Chakraborty

An experimental method for generating homoclinic oscillations using two nonidentical Chua’s oscillators coupled in unidirectional mode is described here. A homoclinic oscillation is obtained at the response oscillator in the weaker coupling limit of phase synchronization. Different phase locking phenomena of homoclinic oscillations with external periodic pulse have been observed when the freque...

Journal: :ACS Photonics 2023

The enhancement of the photoluminescence quantum dots induced by an optical nanoantenna has been studied considerably, but there is still significant interest in optimizing and miniaturizing such structures, especially when accompanied experimental demonstration. Most realizations use plasmonic platforms, some also all-dielectric nanoantennas, hybrid dielectric-plasmonic (subwavelength) nanostr...

Journal: :Journal of Russian Laser Research 2021

We demonstrate a single-longitudinal-mode Ho:GdVO4 continuous-wave (CW) laser at 2048.6 nm. achieved excellent performance using unidirectional ring cavity with an isolator and half-wave plate. obtain the maximum output power equal to 965 mW corresponding slope efficiency of 12.7%.

Journal: :تحقیقات اقتصادی 0
حمید آماده دانشگاه علامه طباطبایی مرتضی قاضی زهره عباسی فر

energy as an important production factor has significant effects on economic growth. identifying the relationship between energy and economic growth can help to improve governmental energy policies. applying ardl and ecm methods, this paper examines the longrun and shortrun causality relationships between (1) energy consumption and economic growth and (2) energy consumption and employment in va...

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