Results 321 to 330 of about 244,761 (369)

Transfer cells and lipid droplets of someValerianaceae

Plant Systematics and Evolution, 1990
Development, structure and the axial distribution of transfer cells and their lignification were investigated inValerianella locusta, Valeriana officinalis, andV. tuberosa (Valerianaceae). Fundamental new results are: (1) Transfer cells often contain numerous lipid droplets. Within the stem the distribution of cells containing lipid droplets correlates
Wolfgang Gaymann, Hermann Lörcher
openaire   +2 more sources

Heat transfer during condensing droplet coalescence

International Journal of Heat and Mass Transfer, 2018
Abstract Dropwise condensation can yield heat fluxes up to an order of magnitude higher than filmwise condensation. Coalescence is the primary mode of growth for condensing droplets above a small threshold size (e.g., radius r > 2 μm for water at 1 atm), but no prior studies have quantitatively assessed heat transfer during coalescence.
Sanjay Adhikari, Alexander S. Rattner
openaire   +2 more sources

Study of Ion Transfer Coupling with Electron Transfer by Hydrophilic Droplet Electrodes

Analytical Chemistry, 2015
In a hydrophilic droplet three-electrode system, electroactive species within the droplet play very important roles in the electron-transfer (ET) process on the solid/electrolyte interface, which can then induce an ion-transfer (IT) reaction at the liquid/liquid interface.
Jing Gu, Meixian Li, Shujuan Liu, Yuanhua Shao, Wenbo Zhao, Ye Chen, Xin Zhang, Zhiwei Zhu, Xiang Xie, Xiaofeng Wu   +9 more
openaire   +3 more sources

Ferro-Liquid Droplet Heat Transfer on Water Surface: Effect of Droplet Volume on Droplet Fluidity

Journal of Thermophysics and Heat Transfer, 2018
Heat transfer analysis of a transformer oil–based, a sessile ferro-liquid droplet formed on a stagnant water surface is carried out.
Abdullah Al-Sharafi, A. Al-Zahrani, Bekir Sami Yilbas   +2 more
openaire   +2 more sources

Droplet heat transfer on micro-post arrays: Effect of droplet size on droplet thermal characteristics

International Journal of Heat and Fluid Flow, 2017
Abstract Heat transfer towards a water droplet from hydrophobic micro-post array surface is considered while mimicking the environmental temperatures. Micro-post arrays are created on a silicon wafer surface via lithography technique. The textured surfaces are replicated by polydimethylsiloxane (PDMS) to achieve an optical transmittance.
Bekir Sami Yilbas, Abdullah Al-Sharafi, Haider Ali   +2 more
openaire   +2 more sources

Fundamental limits of jumping droplet heat transfer

Applied Physics Letters, 2020
Liquid-vapor phase-change cooling has a significant potential to facilitate the development of highly dense electronics by leveraging latent heat during the phase transition to remove heat from hotspots. A promising form of liquid–vapor phase-change cooling is coalescence-induced jumping droplet condensation, where droplet growth results in coalescence
Thomas Foulkes, Soumyadip Sett, Peter Sokalski, Junho Oh, Nenad Miljkovic   +4 more
openaire   +2 more sources

The influence of coalescence on droplet transfer in vertical annular flow

Chemical Engineering Science, 1996
In vertical annular flow, the motion of droplets in the gas core is dominated either by a diffusion mechanism, when the droplet size is small, or by inertial effects when droplets are large. These two mechanisms have to be considered when predicting deposition rates. Furthermore, since droplet-droplet interactions influence droplet motion, a deposition
SOLDATI A., ANDREUSSI, PAOLO
openaire   +4 more sources

Droplet transfer in two-phase annular flow

International Journal of Multiphase Flow, 1983
Abstract The tracer method, adopted by a number of experiments for the measurement of the rate of liquid interchange between the wall layer and the dispersed phase in a fully developed annular flow, has been critically examined on the basis of a more accurate description of the flow behavior of entrained droplets.
openaire   +3 more sources

Radiative Transfer and Cloud Droplet Growth

Journal of the Atmospheric Sciences, 1979
Abstract Two papers, Roach (1976) and Barkstrom (1978), estimating the significance of radiative transfer on cloud (or fog) droplet growth have recently appeared. While their Principal conclusions are in broad quantitative agreement, it is worth commenting briefly on such differences of emphasis as do exist.
openaire   +2 more sources

Molecular simulations of droplet evaporation by heat transfer

Microfluidics and Nanofluidics, 2006
Droplet evaporation by heat transfer is investigated by molecular dynamics simulations for a pure Lennard-Jones fluid. Two different initial conditions are treated: (1) a droplet surrounded by its vapor in equilibrium, (2) a cold droplet surrounded by warm vapor. In both cases heat is transferred from a heat bath.
Johann Fischer, Siswo Sumardiono
openaire   +2 more sources