نتایج جستجو برای: phase microextraction

تعداد نتایج: 600074  

Journal: :Journal of agricultural and food chemistry 2001
J C Beaulieu C C Grimm

Using an automated rapid headspace solid phase microextraction (SPME) method for volatile extraction in cantaloupes, 86 compounds already reported for muskmelons were recovered and an additional 53 compounds not previously reported were identified or tentatively identified. The SPME method extracted a copious number of volatiles that can be analyzed to clearly differentiate between variety, gro...

2002

1 Regulation 6 of the Genetically Modified Organisms (Contained Use) Regulations 2000, GMO(CU), requires that a suitable and sufficient assessment of the risks to human health and the environment be carried out before any activity involving genetic modification of micro-organisms is commenced. The assessment must take into account the matters in Part I of Schedule 3 and include the steps in Par...

2011
Pawel Olszowy Malgorzata Szultka Boguslaw Buszewski

A novel sorbent in solid phase microextraction (SPME) method based on poly(3-alkylthiophenes) was used in the isolation of linezolid from human plasma samples following liquid chromatography determination. The effect of extraction time on the sorption capacity of the SPME process was studied and pointed at 10 min both for adsorption and desorption. Poly(3-methylthiophene) and poly(3-nonylthioph...

2002
Gerhard Peters Bernd Fischer Tage Andersson

Measurements of rain were obtained with a vertically pointing micro radar (MRR) with 1 min time resolution and 50(100) m height resolution at the German Baltic coast on the Zingst peninsula (54.43°N, 12.67°E). The comparison with a conventional rain gauge (30 min integration time) for a fi ve months summer period show a correlation coeffi cient of r = 0.87 for the rainrate and agreement within ...

2013
Oswaldo Hideo Ando Junior Jesiel da Luz Ferro Cleber Lourenço Izidoro Lírio Schaeffer

This paper presents a study of the national electric power, showing the Brazil consumes electricity in a year and how much you could save if thermoelectric modules were used in some industries and new cars and planes to capture and transformation of residual thermal energy into electrical energy. The conclusion appears really attractive economically, given the fact that many processes generate ...

Journal: :Optics express 2014
He Huang Shijie Chen Hongmei Zou Qing Li Jian Fu Feng Lin X Wu

A novel direct-laser writing fabrication process for micro-axicons is demonstrated. A fiber-axicon-generated Bessel beam was utilized to write on UV-curable optical epoxy to form new axicons and axicon arrays, and geometrical parameters of the replicated epoxy axicons were analyzed in terms of both apex angle and proximity of the writing axicons. The shape of the fabricated axicons was demonstr...

Journal: :caspian journal of chemistry 2014
mohammad h fatemi hanieh malekzadeh alireza ghassempour vahide mahdavi

a combined gas chromatography–mass spectrometry (gc–ms) with headspace solid-phase microextraction (hs-spme) method has been employed for the analysis of the flavor volatiles of some iranian rice cultivars (domsiah, deylamani, hashemi, shirodi and tarom). the samples were grown in different cities of mazandaran province. the sampling procedure and chromatographic conditions were same for all sa...

2015
Guillermo Vazquez

Efforts in experimental therapeutics of atherosclerosis are mostly focused on identifying candidate targets that can be exploited in developing new strategies to reduce plaque progression, induce its regression and/or improve stability of advanced lesions. Plaque macrophages are central players in all these processes, and consequently a significant amount of research is devoted to understanding...

2013
Marianne Ojo

This paper not only addresses how linkages, direct and facilitating linkages, can benefit microfinance institutions – and particularly in jurisdictions where the Savings Group Outreach involvement is particularly low, but also illustrates ways and means whereby group lending and other more recent innovative methods used by micro lenders to secure repayments, could increase the desired effects, ...

Journal: :The Review of scientific instruments 2012
Xiaoyu Zheng Joshua Deotte Matthew P Alonso George R Farquar Todd H Weisgraber Steven Gemberling Howon Lee Nicholas Fang Christopher M Spadaccini

The rapid manufacture of complex three-dimensional micro-scale components has eluded researchers for decades. Several additive manufacturing options have been limited by either speed or the ability to fabricate true three-dimensional structures. Projection micro-stereolithography (PμSL) is a low cost, high throughput additive fabrication technique capable of generating three-dimensional microst...

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