نتایج جستجو برای: liquids and chemicals

تعداد نتایج: 16836004  

Journal: :journal of medical signals and sensors 0
hamidreza saberkari habib badri ghavifekr mousa shamsi

in recent years, demand for biological sensors which are capable of fast and accurate detection of minor amounts of pathogens inreal‑time form has been intensified. acoustic wave (aw) devices whose performance is determined by mass sensitivity parametersand quality factor are used in biological sensors as platforms with high quality. yet, current aw devices are facing many challengessuch as the...

ژورنال: سلامت کار ایران 2011
متوقع, مجید, جهانگیری, مهدی,

  Background and aims In the most chemical process industries, workers are exposed to various chemicals and working with these chemicals without considering safety and health considerations can lead to different harmful symptoms. For deciding about control measures and reducing risk to acceptable level , it is necessary to assess the health risk of exposing to harmful chemicals by aid of specif...

Journal: :international journal of environmental research 2015
m. hagner e. kuoppala l. fagernäs k. tiilikkala h. setälä

wood vinegar is the aqueous phase of the liquid produced during the slow pyrolysis of wood.it has the potential to be used as a pesticide against various weeds, insects and molluscs. due to divergentfeedstocks, pyrolysis processes and storing conditions, the chemical composition of wood vinegar variesbetween producers and time. the aim of our current study was to use the copse snail arianta arb...

Journal: :Acta biochimica Polonica 2011
Izabela Rusiecka Andrzej C Składanowski

The multixenobiotic/multidrug resistance (MXR/MDR) system controls transport of foreign molecules across the plasma membrane as a preventive measure before toxicity becomes apparent. The system consists of an efflux pump, ABCB1, and/or a member of the ABCC family. Ionic liquids are broadly used solvents with several unique properties such as wide liquid range, negligible vapor pressure, good th...

Journal: :iranian journal of medical sciences 0
a.a. khezri department of urology nemazee hospital, shiraz university of medical sciences, shiraz, iran.

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Journal: :Lab on a chip 2013
Roozbeh Safavieh David Juncker

Microfluidic capillary systems employ surface tension effects to manipulate liquids, and are thus self-powered and self-regulated as liquid handling is structurally and chemically encoded in microscale conduits. However, capillary systems have been limited to perform simple fluidic operations. Here, we introduce complex capillary flow circuits that encode sequential flow of multiple liquids wit...

Journal: :Chemical Engineering Science 2022

Risk assessment relying on characteristics of chemicals in process industries can prevent accidents caused by flammable and combustible liquids gases. Whereas its application is limited the lack safety-related properties for abundant interest, which promotes demand accurate predictive models to evaluate inherent safety implications chemicals. In this research, staking-based ensemble learning co...

2013
Zhiwei Chen Jose H. Pereira Hanbin Liu Huu M. Tran Nathan S. Y. Hsu Dean Dibble Seema Singh Paul D. Adams Rajat Sapra Masood Z. Hadi Blake A. Simmons Kenneth L. Sale

Ionic liquid pretreatment of biomass has been shown to greatly reduce the recalcitrance of lignocellulosic biomass, resulting in improved sugar yields after enzymatic saccharification. However, even under these improved saccharification conditions the cost of enzymes still represents a significant proportion of the total cost of producing sugars and ultimately fuels from lignocellulosic biomass...

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...

Journal: :Computers & Chemical Engineering 2010
Luke D. Simoni Alexandre Chapeaux Joan F. Brennecke Mark A. Stadtherr

The production from biomass of chemicals and fuels by fermentation, biocatalysis, and related techniques implies energy-intensive separations of organics from relatively dilute aqueous solutions, and may require use of hazardous materials as entrainers to break azeotropes. We consider the design feasibility of using ionic liquids as solvents in liquid-liquid extractions for separating organic c...

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