نتایج جستجو برای: aluminum and graphite

تعداد نتایج: 16842980  

Journal: :Chemical Industry & Chemical Engineering Quarterly 2021

The cost of microalgae harvesting constitutes a heavy burden on the commercialization biofuel production. present study addressed this problem through economic and parametric comparison electrochemical using sacrificial electrode (aluminum) nonsacrificial (graphite). efficiency, power consumption, operation were collected as objective variables function applied current initial pH solution. resu...

2016
Ambreen Mirza Andrew King Claire Troakes Christopher Exley

Aluminum in human brain tissue is implicated in the etiologies of neurodegenerative diseases including Alzheimer's disease. While methods for the accurate and precise measurement of aluminum in human brain tissue are widely acknowledged, the same cannot be said for the visualization of aluminum. Herein we have used transversely-heated graphite furnace atomic absorption spectrometry to measure a...

2011
I. NOVÁ

The article deals with measurements of linear changes of castings from foliated graphite cast iron and Al-alloys during their solidification. For this purpose the measuring apparatus, which applies a dilatometer of Polish provenience, was built up. Dilatation curves of graphite cast iron and Al-alloys were acquired during the casting process. In the case of Al-alloys the influence of chemical c...

Journal: :international journal of epidemiologic research 2015
keihan ghatreh samani effat farrokhi neda mohandes samani hadiseh hadiseh moradi

background and aims: the aluminum-containing compounds are used as glaze in tile and ceramic production plants. it means that the workers working in these plants are in direct exposure to aluminum-containing compounds. the aim of this study was to assess the potential damages caused by aluminum among tile plant workers. methods: in this cross-sectional study, 60 workers whom were in direct expo...

2011
S. S. Harilal A. Hassanein M. Polek

We report a late-time “fireworks-like” particle emission from laser-produced graphite plasma during its evolution. Plasmas were produced using graphite targets excited with 1064 nm Nd: yttrium aluminum garnet (YAG) laser in vacuum. The time evolution of graphite plasma was investigated using fast gated imaging and visible emission spectroscopy. The emission dynamics of plasma is rapidly changin...

The influence of aluminum, within the range of 0.08 - 6.16 wt.%, on the microstructure and hardness of as-cast ductile cast iron has been studied. A number of irons of different composition have been made by green sand casting and gravity die casting of appropriate design to provide the experimental materials. It has been found that Al addition and higher cooling rates in permanent mould castin...

2007
Erjia Liu

Diamond-like carbon (DLC) thin films used in this study were prepared with DC magnetron sputtering deposition. Silicon (100) wafers were used as the substrates onto which an RF bias was applied during the film deposition. For the nitrogen doped DLC films, a pure graphite target was used as the carbon source and nitrogen gas was introduced into the deposition chamber via a mass flow controller. ...

Journal: :Clinical chemistry 1994
C Bradley F Y Leung

We compared a stabilized-temperature L'vov platform furnace containing an end-heated graphite atomizer (HGA) and transverse Zeeman background-correction system with a side-heated furnace system (transversely heated graphite atomizer; THGA) containing a longitudinal Zeeman background-correction system for the determination of aluminum in plasma and urine. The regression statistics for the correl...

Journal: :Clinical chemistry 1978
J E Gorsky A A Dietz

Aluminum, generally considered non-essential and non-toxic, may accumulate in toxic amounts in the brain in cases of chronic renal failure. We describe a procedure for its analysis in biological fluids by atomic absorption spectrophotometry with a graphite furnace. No sample preparation is required and the procedure is sensitive at the appropriate concentrations. A sample of serum or urine is p...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید