نتایج جستجو برای: temperature dispersion

تعداد نتایج: 510040  

2017
Matthew J Derry Oleksandr O Mykhaylyk Steven P Armes

Diblock copolymer vesicles are prepared via RAFT dispersion polymerization directly in mineral oil. Such vesicles undergo a vesicle-to-worm transition on heating to 150 °C, as judged by TEM and SAXS. Variable-temperature 1 H NMR spectroscopy indicates that this transition is the result of surface plasticization of the membrane-forming block by hot solvent, effectively increasing the volume frac...

Journal: :Physical review letters 2008
Eros Mariani Felix von Oppen

Rotation and reflection symmetries impose that out-of-plane (flexural) phonons of freestanding graphene membranes have a quadratic dispersion at long wavelength and can be excited by charge carriers in pairs only. As a result, we find that flexural phonons dominate the phonon contribution to the resistivity rho below a crossover temperature T(x) where we obtain an anomalous temperature dependen...

Journal: :Journal of chromatography. A 2002
Timothy A Kluchinsky Michael V Sheely Paul B Savage Philip A Smith

2-Chlorobenzylidenemalononitrile (CS riot control agent) has been shown to produce a number of thermal degradation products when dispersed at high temperature. We hypothesized that these CS-derived compounds are formed by energy input from heating during the dispersion process. Here we identified organic CS-derived compounds formed from purified CS subjected to temperatures ranging from 300 to ...

2008
S. HILL A. KOVALEV J. S. QUALLS

We report detailed angle dependent studies of the metallic state microwave (40 to 200 GHz) magneto-conductivity of single crystal samples of the a-(BEDT-TTF)2KHg(SCN)4 organic charge density wave conductor, and the perovskite superconductor SraRuO^ We observe series' of resonant absorptions which we attribute to periodic orbit resonances a phenomenon closely related to cyclotron resonance. By p...

2008
B. Neto P. S. André

The chromatic dispersion of optical fiber is a limiting factor in the increase of optical communications transmission bitrates. Chirped Fiber Bragg Gratings submitted to temperature gradients can provide tuneable dispersion compensation, being the tuneability achieved by an appropriate control of the applied temperature gradient. In this work we propose a numerical model that describes heat tra...

2008
Stephen G. Monismith James L. Hench Derek A. Fong Nicholas J. Nidzieko William E. Fleenor Laura P. Doyle Geoffrey Schladow

In this paper, we discuss observations of temperature variability in the tidal portion of the San Joaquin River in California. The San Joaquin River makes up the southern portion of the Sacramento San Joaquin Delta, the eastern end of San Francisco Bay. Observations made in August 2004 and August 2005 show significant diurnal variations in temperature in response to surface heat exchange. Howev...

Journal: :Physical review letters 2001
B Camarota F Parage F Balestro P Delsing O Buisson

We have studied niobium superconducting thin wires deposited onto a SrTiO3 substrate. By measuring the reflection coefficient of the wires, resonances are observed in the superconducting state in the 130 MHz to 4 GHz range. They are interpreted as standing wave resonances of one-dimensional plasma modes propagating along the superconducting wire. The experimental dispersion law, omega versus q,...

ewline"> Dispersion of heavy gases is considered to be more hazardous than the passive ones because it takes place more slowly. ...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
azadeh ranjbar aman mohammad ziaiifar mahdi parvini mahdi kashaninejad yahya maghsoudlou

introduction: canning is the most effective way to food preservation. starch- based foods include the major food materials such as porridges. these foods due to sensitivity to high shear rates used in rotary retorts and thus texture decomposition, usually sterilized in static retorts. broken heating behavior, can headspace and initial temperature have important role on heat transfer rate and th...

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