نتایج جستجو برای: surface tension

تعداد نتایج: 683760  

Journal: :iranian endodontic journal 0
luciano giardino carlos estrela luigi generali zahed mohammadi saeed asgary

i ntroduction: due to the complex anatomy of the root canal system and high surface tension of common root canal irrigants (rci), conducting an investigation on rcis containing surfactants is a priority. the aim of this in vitro study was to verify the antibacterial potential of rci with low surface tension in root canals infected with enterococcus faecalis ( e. faecalis ). methods and material...

Journal: :Communications in Mathematical Physics 2014

Journal: :Journal of Applied Polymer Science 2021

This paper focuses on the calculation of interfacial tension two systems: low-density polyethylene with isotactic polypropylene and high-density syndiotactic polypropylene. For this, three methods to measure are compared: use Palierne's model, Gramespacher Meissner's both based additional elasticity or long relaxation times brought by shape recovery dispersed phase, ab-initio calculation, which...

Journal: :international journal of environmental research 0
r. jalilzadeh yengejeh department of environmental engineering, khouzestan science and research branch, islamic azad university,ahvaz, iran m.s. sekhavatjou department of environmental engineering, khouzestan science and research branch, islamic azad university,ahvaz, iran p. maktabi khouzestan science and research branch, islamic azad university, ahvaz, iran n. arbab soleimani department of microbiology, damghan branch, islamic azad university, damghan, iran s. khadivi department of environment, roudehen branch, islamic azad university, roudehen, iran v. pourjafarian department of environment, faculty of marine science and technology, north tehran branch, islamic azad university, tehran, iran

using environmental-friendly methods in order to remove or reduce oil pollutants and their derivations in the environment are developing. in this study, the biodegrading ability of bacillus subtilis .sp which has been separated from oil-polluted soil was examined. it was revealed that it can reduce surface tension of growth medium and produce bio-surfactant at 37 and 20 degrees centigrade. also...

Journal: :The Journal of General Physiology 2003
J. M. Johlin

1. Data are given to show that surface tension values obtained by the ring method cannot be considered reliable when absolute values are desired. 2. Data are given to show that, in the case of solutions of semicolloids, surface tension values obtained for a definite period of time following the formation of a new interface cannot always be consistently reproduced by the ring method. 3. It is sh...

2000
H. D. Ceniceros T. Y. Hou

Morphological instabilities are common to pattern formation problems such as the non-equilibrium growth of crystals and directional solidification. Very small perturbations caused by noise originate convoluted interfacial patterns when surface tension is small. The generic mechanisms in the formation of these complex patterns are present in the simpler problem of a Hele-Shaw interface. Amid thi...

1999
HECTOR D. CENICEROS THOMAS Y. HOU

Morphological instabilities are common to pattern formation problems such as the non-equilibrium growth of crystals and directional solidiication. Very small perturbations caused by noise originate convoluted interfacial patterns when surface tension is small. The generic mechanisms in the formation of these complex patterns are present in the simpler problem of a Hele-Shaw interface. Amid this...

In this study, artificial neural network was used to predict the surface tension of 20 hydrocarbon mixtures. Experimental data was divided into two parts (70% for training and 30% for testing). Optimal configuration of the network was obtained with minimization of prediction error on testing data. The accuracy of our proposed model was compared with four well-known empirical equations. The arti...

2010
S. Stensholt

Methods for implementing variable surface tension on two popular Lattice– Boltzmann models, the original gradient-based chromodynamic model, and the Shan–Chen model, are explored and examined. The experiment, inspired by the work of Greenspan, consists of reducing the surface tension at two poles of a circular droplet due to a diffusive solute (surfactant). Both Lattice Boltzmann models are abl...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید