نتایج جستجو برای: liquids and chemicals

تعداد نتایج: 16836004  

Journal: :Frontiers in Materials 2022

Increased environmental awareness has encouraged researchers to seek alternatives replace the use of hazardous chemicals in extraction nanocellulose for conservation. Lately, ionic liquids have been used as a medium processing cellulose and other biopolymers because they are recyclable reusable. Recently, extract variety applications. In this short review, examples that usually demonstrated. Ad...

Treated sea water is the most significant source of water and surfactant floods. The various chemicals employed in treatment plants should be compatible with surfactant systems. Based on surface tension experiments, the activity of these chemicals is examined over a wide range of concentrations in different solutions, including distillated water, sea water by using three types of surfactant mix...

Journal: :international journal of advanced design and manufacturing technology 0
farshid mardkhri cyrus aghanajafi

the subject we discussion about are nucleation and meta stable phenomena’s , superheat liquids , supercold liquids and meanwhile  applications of this liquids. all in all meta stable situation can occur in three condition: first while changing liquid phase to gas phase by heating , second changing liquid phase to solid phase by cooling , third while moving water stream in subsonic nozzles or su...

Journal: :Proceedings of the National Academy of Sciences 1990

Journal: :physical chemistry research 0
mehrdad honarmand department of mechanics, tiran branch, islamic azad university, isfahan, iran mohammad reza haghighat nezhad chemical engineering department, shahreza branch, islamic azad university, shahreza, iran vahid pourgharib department of mechanics, tiran branch, islamic azad university, isfahan, iran mohsen beigi department of mechanics, tiran branch, islamic azad university, isfahan, iran

there are a number of techniques available to estimate saturated-liquid molar or specific volumes or densities of liquids. in this study, a new empirical correlation is presented to calculate volume of saturated liquids as a function of critical volume, reduced temperature and acentric factor. an optimization algorithm is utilized to obtain unknown parameters of this correlation by fitting them...

ژورنال: سلامت و محیط زیست 2014
جعفری, حمیدرضا , نبی‌بیدهندی, غلامرضا , هدایتی, امیر, هویدی, حسن, کرمی, شاهو,

Background & Objectives: Human environment is surrounded bychemicals that could directly or indirectly endanger human health. Some statistics of WHO is indicative of the fact that four million people are employed in the chemical industry throughout the world and one million people die or become disabled annually due to contact with chemicals. Moreover, 1-4 Millions chemical toxicity occur annua...

A new simple model is introduced for a liquid and an equation of state is derived based on this model and the statistical mechanical calculations. This equation of state works well for the non-polar and slightly polar liquids. The important conclusion that may be deduced from this equation of state is that if the reduced variables of state are chosen and defined appropriately, then, the pri...

2005
Robert B. Cody James A. Laramée J. Michael Nilles H. Dupont Durst

Mass Spectrometry (MS) is one of the fastest-growing areas in analytical instrumentation. The use of mass spectrometry in support of synthetic, organic, and pharmaceutical chemistry is well established. Mass spectrometry is also used in materials science, environmental research, and forensic chemistry. It has also evolved into one of the core methods used in biotechnology. However, currently av...

1998
H J Schulz G Cuniberti P Pieri

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