نتایج جستجو برای: change of phase

تعداد نتایج: 21257749  

Journal: :Nature Photonics 2014

Journal: :پژوهش های جغرافیای طبیعی 0
طیبه کیانی دانشجوی دکتری ژئومورفولوژی، دانشکدة علوم جغرافیایی و برنامه ریزی، دانشگاه اصفهان، ایران محمدحسین رامشت استاد ژئومورفولوژی، دانشکدة علوم جغرافیایی و برنامه ریزی، دانشگاه اصفهان، ایران امجد ملکی دانشیار ژئومورفولوژی، دانشکدة ادبیات و علوم انسانی، دانشگاه رازی، ایران فریده صفاکیش دانشجوی دکتری ژئومورفولوژی، دانشکدة علوم جغرافیایی، دانشگاه خوارزمی، ایران

introduction in spite of its short time period compared with the earth long evolution history, quaternary has had a significant effect on the final formation of the landforms and vital resources. it is the final analysis of these levels and fully dependent on the earth genetic diseases and, above all, significant climate changes that have happened during this period. gavkhouni basin morphologic...

Journal: :Journal of Electrical & Electronic Systems 2013

2003
Alexander V. Chaplik Robert H. Blick

We demonstrate the formation of confinement potentials in suspended nanostructures induced by the geometry of the devices. We then propose a setup for measuring the resulting geometric phase change of electronic wave functions in such a mechanical nanostructure. The device consists of a suspended loop through which a phase coherent current is driven. Combination of two and more geometrically in...

Journal: :asian journal of sports medicine 0
keyvan hejazi department of sport physiology, faculty of physical education and sport sciences, ferdowsi university of mashhad, mashhad, iran; paradise daneshgah, azadi square, faculty of physical education and sport sciences, ferdowsi university of mashhad, pobox: 1574, mashhad, iran. seyyed-reza attarzadeh hosseini faculty of physical education and sport sciences, ferdowsi university of mashhad, mashhad, iran

purpose the aim of this study was to compare the levels of serum immunoglobulin (iga, igm, igg), testosterone and cortisol in semi-endurance elite runners during general preparation and competition phase of training. methods thirteen semi-endurance elite male runners with an average age of 18.92±1.7 years volunteered to take part in this study. the runners participated in the selected training ...

Journal: :Chemical communications 2008
Shiro Seki Yasuhiro Umebayashi Seiji Tsuzuki Kikuko Hayamizu Yo Kobayashi Yasutaka Ohno Takeshi Kobayashi Yuichi Mita Hajime Miyashiro Nobuyuki Terada Shin-ichi Ishiguro

An unusual ionic conduction phenomenon related to the phase transition of a novel phosphonium-cation-based room-temperature ionic liquid (RTIL) is reported; we found that in the phase change upon cooling, a clear increase in ionic conductivity was seen as the temperature was lowered, which differs from widely known conventional RTILs; clearly, our finding of abnormality of the correlation betwe...

2003
W. B. Chen Reginald B. H. Tan

Two-phase bubble formation coupled with phase change at a submerged nozzle is studied theoretically. The whole bubble consists of a ®apor and a liquid phase. The inner ®apor phase is assumed to be surrounded by a thin condensate layer, in which the ®apor condenses partially as the two-phase bubble grows. The interface element approach is applied to describe the dynamics of bubble formation. The...

Journal: :Nano letters 2013
Pritesh Parikh Chitraleema Chakraborty T S Abhilash Shamashis Sengupta Chun Cheng Junqiao Wu Mandar M Deshmukh

We study the strain state of doubly clamped VO2 nanobeam devices by dynamically probing resonant frequency of the nanoscale electromechanical device across the metal-insulator transition. Simultaneous resistance and resonance measurements indicate M1-M2 phase transition in the insulating state with a drop in resonant frequency concomitant with an increase in resistance. The resonant frequency i...

Amir Khacpai Hosein Abolghasemi, Hozhabr Sohbat zadeh Mohammad Ghannadi maragheh

In this paper, we studied effect of different parameters including density, viscosity, interfacial tension and solute transfer concentration on phase inversion hold-up. The results showed that change in phase density ratio had no effect on phase inversion hold-up. It also disclosed that the phase viscosity ratio was the most effective parameter affecting phase inversion hold-up and each phase h...

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