نتایج جستجو برای: through fid

تعداد نتایج: 1353509  

2012
Hui-Jeon Jeon Hyeon-Son Choi OK-Hwan Lee You-Jin Jeon Boo-Yong Lee

Gelidium (G.) elegans is a red alga inhabiting intertidal areas of North East Asia. We examined anti-oxidative and anti-inflammatory effects of G. elegans, depending on drying and extraction conditions, by determining reactive oxygen species (ROS) and nitric oxide (NO) in 3T3-L1 and RAW 264.7 cells. Extraction yields of samples using hot air drying (HD) and far-infrared ray drying (FID) were si...

Journal: :Journal of chromatographic science 2009
Stephen B Stanfill Lily T Jia David J Ashley Clifford H Watson

In recent years, there has been a rapid proliferation of smokeless products with a wide range of nicotine content and flavoring formulations that may appeal to new users and existing cigarette smokers. The CDC nicotine method, which employs gas chromatography-flame ionization detection (GC-FID), provides a robust means for measuring nicotine in smokeless tobacco. However, several compounds, ide...

2017
Ulrich R. Bernier Christopher L. Bray Richard A. Yost

Vacuum-outlet operation of short fused-silica open tubular columns for gas chromatography provides benefits to analysis speed by increasing the optimum velocity while minimizing the loss in resolution. Vacuum-outlet operation of a column with a gas chromatographic detector necessitates that the detector also be under vacuum. Simple modifications were made to a gas chromatograph]flame Ž . ioniza...

2013
Omid Sedighi Atieh Makhlough Ghasem Janbabai Mohammad Neemi

BACKGROUND Functional iron deficiency (FID) may cause erythropoietin resistance in patients under hemodialysis (HD). Since the role of chronic inflammation or oxidative stress in its pathogenesis is unclear, controversy remains to whether intravenous iron or intravenous ascorbic acid (an antioxidant) can improve this anemia due to decreased iron availability. OBJECTIVES The current study comp...

Journal: :Physical review letters 2011
Kirill Prozument Anthony P Colombo Yan Zhou G Barratt Park Vladimir S Petrović Stephen L Coy Robert W Field

Transitions between Rydberg states of Ca atoms, in a pulsed, supersonic atomic beam, are directly detected by chirped-pulse millimeter-wave spectroscopy. Broadband, high-resolution spectra with accurate relative intensities are recorded instantly. Free induction decay (FID) of atoms, polarized by the chirped pulse, at their Rydberg-Rydberg transition frequencies, is heterodyne detected, average...

2017
Qiran Sheng Joseph C Neaverson Tasnim Mahmoud Clare E M Stevenson Susan E Matthews Zoë A E Waller

i-Motifs are quadruplex DNA structures formed from sequences rich in cytosine and held together by intercalated, hemi-protonated cytosine-cytosine base pairs. These sequences are prevalent in gene promoter regions and may play a role in gene transcription. Targeting these structures with ligands could provide a novel way to target genetic disease but there are very few ligands which have been s...

2000
A. Sefidcon F. Khendek

Intelligent Network (IN) is a standard architecture developed by ITU-T and applicable to all telecommunications networks including PSTN, ISDN and PLMN. IN aims to ease the development and deployment of new telecommunications services. However, the problem of feature interaction hinders it from easily reaching this goal. In this paper, we discuss the feature interaction problem before introducin...

Journal: :journal of food biosciences and technology 0

abstract: acrylamide is a chemical compound that has been widely used since the last century for various applications. it is also formed from carbohydrate and amino acid containing foods by application of heat particularly in fried potato products, coffee and bread. since bread is one of the primary foods of iranian people, the determination of acrylamide content in bread might be considered im...

2009
A. Poplawsky R. Dingledine

INTRODUCTION Direct detection of axonal neural magnetic fields (NMFs) by magnetic resonance imaging has met with conflicting evidence. Chow et al. reported a significant magnitude change in the human optic nerve and corpus callosum [1,2]. However, Park and Lee concluded that the modeled signal changes of axonal NMFs were negligible [3]. The objective of this study is to demonstrate the temporal...

Journal: :The Analyst 2002
G A Eiceman E G Nazarov R A Miller E V Krylov A M Zapata

A planar high field asymmetric waveform ion mobility spectrometer (PFAIMS) with a micro-machined drift tube was characterized as a detector for capillary gas chromatography. The performance of the PFAIMS was compared directly to that of a flame ionization detector (FID) for the separation of a ketone mixture from butanone to decanone. Effluent from the column was continuously sampled by the det...

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