نتایج جستجو برای: water mixture

تعداد نتایج: 632936  

K. Sedighi M. Ebrahimi M. Farhadi, S. Akbarzadeh

In this paper, the measurement of the viscosity of ZnO in ethylene glycol, propylene glycol, mixture of ethylene glycol and water (60:40 by weight), and a mixture of propylene glycol and water (60:40 by weight) and the thermal conductivity in ethylene glycol and propylene glycol as base fluids in the range of temperature from 25 ºC to 60 ºC are investigated. The results indicate that as the tem...

Journal: :محیط شناسی 0
حسین سیدکلال استادیار شیمی تجزیه، پژوهشگاه علوم و فنون هسته ای، پژوهشکدة چرخۀ سوخت هسته ای علیرضا خانچی دانشیار شیمی تجزیه، پژوهشگاه علوم و فنون هسته ای، پژوهشکدة چرخۀ سوخت هسته ای حسن هویدی استادیار برنامه ریزی محیط زیست، دانشکده محیط زیست، دانشگاه تهران محمد تقی اف کارشناس ارشد مهندسی شیمی، پژوهشگاه علوم و فنون هسته ای، پژوهشکدة چرخة سوخت هسته ای مریم نوروزی کارشناس ارشد شیمی تجزیه، دانشگاه پیام نور، اردکان

introduction rhodium metal is known for its stability in corrosive environments, physical beauty, and its unique properties. rhodium is now widely used for alloying platinum in thermocouples, crucibles, evaporating dishes, weighing boats windings for high-temperature furnaces. it has been applied as a coating material because of the hardness and luster of its surface. rhodium is present at abou...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2016
Chin Hong Ooi Edward Bormashenko Anh V Nguyen Geoffrey M Evans Dzung V Dao Nam-Trung Nguyen

Liquid marble is a liquid droplet coated with particles. Recently, the evaporation process of a sessile liquid marble using geometric measurements has attracted great attention from the research community. However, the lack of gravimetric measurement limits further insights into the physical changes of a liquid marble during the evaporation process. Moreover, the evaporation process of a marble...

Nano materials have been widely used in laboratory and industrial scales in order to improve various properties of concrete and concrete mixture. The mainstream practice of the researches in this field is to add metallic nano-particles into the concrete mixture. The present research focuses on adding Micro-Nano Air Bubbles (MNAB) into water before mixing it with aggregate and cement mixtures. I...

Journal: :Sultra Civil Engineering Journal 2023

The purpose of this study was to (1) analyze the characteristics fresh concrete mixed with sea sand (2) compressive strength water and curing. In study, specimens used were 21 cylinders a job mix design plan f'c 25 MPa curing duration 7 days, 14 28 days. At age days 30.29 33.12 higher than seawater 29.02 32.13 MPa, while at 37. 08 compared 33.97 MPa. Sea has very good quality normal can be in c...

Journal: :The Journal of chemical physics 2004
L Dougan S P Bates R Hargreaves J P Fox J Crain J L Finney V Reat A K Soper

An extensive series of neutron diffraction experiments and molecular dynamics simulations has shown that mixtures of methanol and water exhibit extended structures in solution despite the components being fully miscible in all proportions. Of particular interest is a concentration region (methanol mole fraction between 0.27 and 0.54) where both methanol and water appear to form separate, percol...

Journal: :Acta biochimica Polonica 2013
Ionița Firuța Fiţigău Francisc Peter Carmen Gabriela Boeriu

The enzymatic oxidative polymerization of five technical lignins with different molecular properties, i.e. Soda Grass/Wheat straw Lignin, Organosolv Hardwood Lignin, Soda Wheat straw Lignin, Alkali pretreated Wheat straw Lignin, and Kraft Softwood was studied. All lignins were previously fractionated by acetone/water 50:50 (v/v) and the laccase-catalyzed polymerization of the low molecular weig...

Journal: :Physical chemistry chemical physics : PCCP 2015
Tomohito Sudare Tomonaga Ueno Anyarat Watthanaphanit Nagahiro Saito

An extraordinary high-speed synthesis of gold nanoparticles (AuNPs) was discovered by synthesizing the AuNPs in ethanol-water mixtures using a solution plasma process (SPP). The influence of the ethanol mole fraction (χethanol) in the ethanol-water mixtures on the reduction rate of gold chloride ions to AuNPs under the SPP system was studied. The results indicated that the reaction rate of the ...

Journal: :Chemical & pharmaceutical bulletin 2015
Shinji Katsura Nobuo Yamada Atsushi Nakashima Sumihiro Shiraishi Takayuki Furuishi Haruhisa Ueda

The aim of this study was to identify the chemical structure of the photodegradation products of furosemide in a water-acetonitrile mixture (1 : 1). Furosemide solution was irradiated with a D65 fluorescent lamp and the products were isolated by preparative HPLC. The fractions were evaporated to dryness in vacuo. The purity of the photodegradation products was measured by HPLC. The purity of pr...

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