parameters for dynamic headspace solid phase microextraction sampling

... microextraction techniques for pharmaceutical and biomedical analyses Anal Sci 2011, 27:893-905 Llompart M, Li K, Fingas M: Solid- phase microextraction and headspace solid- phase microextraction for the determination ... using solid- phase microextraction and GC/MS Environ Sci Technol 1994, 28:298-305 10 Nilsson T, Ferrari R, Facchetti S: Inter-laboratory studies for the validation of solid- phase microextraction for ... J: Solid Phase Microextraction: Theory and Practice New York: Wiley-VCH; 1997 Pawliszyn J (Ed): Handbook of Solid Phase Microextraction Peking: Chemical Industry Press; 2009 Alpendurada MF: Solid- phase...

Ngày tải lên: 20/06/2014, 20:20

... 275 Ulrich, Solid- phase microextraction in biomedical analysis, Journal of Chromatography A, 902 (2000) 167-194 L.J.Krutz, S.A.Senseman, A.S.Sciumbato, Solid- phase microextraction for herbicide ... Janusz Pawliszyn, In vivo sampling with solid phase microextraction, Journal of Biochemical and Biophysical Methods, 70 (2007) 181193 Pragst, Application of solid- phase microextraction in analytical ... D., Chai, M., Zhang, Z., Pawliszyn, J., Solid- Phase Microextraction: An Attractive Alternative, Environmental Lab.11 (1992) 10-15 Pawliszyn, J Solid Phase Microextraction : Theory and Practice...

Ngày tải lên: 02/05/2014, 23:00

Ngày tải lên: 14/11/2014, 09:52

... cells on foreign substrates are described here: solid phase crystallization (Section 1.3.1), seed layer approach (Section 1.3.2), and liquid phase crystallization (Section 1.3.3) 1.3.1 Solid phase ... LIGHT TRAPPING CONCEPTS FOR PLASMA-DEPOSITED SOLID PHASE CRYSTALLISED POLYCRYSTALLINE SILICON THIN-FILM SOLAR CELLS ON GLASS YING HUANG (M.Sc., NTU) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR ... evaporated solid- phase- crystallized thin-film silicon solar cells on glass, Applied Physics Letters, 86 (2005) 172108 [24] D Song, D Inns, A Straub, M.L Terry, P Campbell, A.G Aberle, Solid phase...

Ngày tải lên: 09/09/2015, 11:16

... monitoring S/N Signal-to-noise SPBME Sorbent phase- based microextraction SPE Solid phase extraction µ-SPE Micro -solid- phase extraction SPME Solid- phase microextraction TCAs Tricyclic antidepressants ... sorbent phase- based microextraction (SPBME) including fiber-based solid- phase microextraction (SPME), stir bar sorptive extraction (SBSE), microextraction in a packed syringe (MEPS), micro -solid- phase ... [29-33] HF-LPME includes two -phase, three -phase and solvent-bar microextraction (SBME) 1.2.2.1 Two -phase HF-LPME Two -phase HF-LPME was developed by Rasmussen et al [34] In two -phase HF-LPME, a microsyringe...

Ngày tải lên: 09/09/2015, 10:18

... CHARACTERISATION OF SOLID- PHASE CRYSTALLISED PLASMADEPOSITED SILICON THIN FILMS ON GLASS FOR PHOTOVOLTAIC APPLICATIONS AVISHEK KUMAR (B.Eng., MSc-Microelectronics) A THESIS SUBMITTED FOR THE DEGREE ... Dalapati for giving me an opportunity to work in his lab and for his valuable guidance during this work I would like to thank Dr Bram Hoex for his scientific advice I thank Dr Hidayat for his ... Figure 2.9: Process sequence and the recipe for the deposition of the doped aSi:H films 29 Figure 2.10: Temperature profile used for the solid phase crystallization of the aSi:H films...

Ngày tải lên: 09/09/2015, 11:21

... the formation of the c-Si phase The Gibbs free energy in the system is reduced for every atom transformed from the a-Si phase to the c-Si phase However, an energy penalty is imposed for the formation ... reason why phase transformation occurs is because the initial phase is unstable relative to the final phase The phase stability is determined by the Gibbs free energy for transformation that occurs ... technique and the associated information extracted 57 Table 4-1 Deposition parameters for ETP deposited a-Si:H 63 Table 4-2 Deposition parameters for RF-PECVD deposited a-Si:H ...

Ngày tải lên: 10/09/2015, 09:31

... have also been investigated, information of unmodified silica monolith as solid phase extraction is limited In this thesis, application of silica monolith for solid phase extraction had been explored ... as solid phase extraction cartridge for the extraction of epinephrine, metanephrine and normetanephrine from urine  Application of the silica monolith as solid phase extraction cartridge for ... [Buckenmaier et al., 2002] Therefore, an extra effort has to be Chapter 28 put in to successfully elute the analytes On the other hand for a sorbent to be effective as a solid phase extractor, it should...

Ngày tải lên: 10/09/2015, 15:50

... sample phase (a1) A 0.1- or 0.2-mL aqueous acceptor phase (a2) was layered over the o phase After extraction for a prescribed time, an aliquot of the a2 phase was injected directly into an HPLC for ... donor phase into the organic phase and further into the acceptor phase without back-extraction to the organic phase again The acceptor phase can be directly transferred to an HPLC or CE system for ... were applied for the first time to optimize microextraction conditions for the analysis of three nonsteroidal vii anti-inflammatory drug residues In dynamic LLLME mode, the acceptor phase was repeatedly...

Ngày tải lên: 12/09/2015, 08:20

... sink for silicon interstitials This chapter provides the fundamentals needed for an effective application of carbon for device fabrication in the later stages of the research work 2.2 Solid phase ... γ for a long channel device, γlong for comparison 121 Figure 6.17 (a) ID-Vgs characteristics and (b) The ID-Vds, for a tcap = 20nm device activated under SPER annealing of 750 °C for ... development of solid state devices lies in their function as core components in electronics used in fields such as computing, communication and information storage As these solid state devices form the...

Ngày tải lên: 12/09/2015, 09:28

... developments of microextraction techniques is list in Table 1-2 1.3.1 Sorbent -phase microextraction Solid- phase microextraction (SPME) is currently the most popular sorbentbased microextraction ... modified high performance liquid Table 1-2 comparative analysis of several main developments of microextraction techniques Microextraction techniques Extraction phase Solid- phase microextraction ... milliliter range SFE and headspace sampling (static headspace sampling and purge-and-trap) are organic solventless sample preparation methods However, static headspace sampling suffers from low...

Ngày tải lên: 14/09/2015, 11:45

... Principles of Liquid -phase Microextraction 2.1 Extraction principles… ………………………………………………… 2.1.1 Two -phase liquid -phase microextraction …………………… … 2.1.2 Three -phase liquid -phase microextraction …………………… ... depends on: ‰ phase ratio (volume of acceptor phase to volume of donor phase) ‰ distribution ratio between donor phase and organic phase as well as between organic phase and acceptor phase Equations ... placed between the two aqueous phases (donor phase and acceptor phase) This allows organic phase to be thin, behaving like membrane One of these aqueous phases (donor phase) contains the analytes...

Ngày tải lên: 10/11/2015, 11:00

... unseen for a given domain s, we are already performing an implicit form of smoothing (when computing the expected counts), since each document has a distribution over all topics, and therefore ... distribution, but rather learn to utilize information from any topic distribution if it helps us create topic relevant translations F2 is useful for dynamic adaptation, where the adapted feature ... membership directly into our model is an effective strategy for dynamically biasing SMT towards relevant translations, as evidenced by significant performance gains This method presents several advantages...

Ngày tải lên: 19/02/2014, 19:20

... to visualise dynamic graphs is to aggregate all graphs into a single non -dynamic graph Since such an aggregation loses most of the dynamic information, this case is out of scope for this paper ... a better rating for FLT for visual clutter (GAC1) and spatial aliases (GAC2) For the general aesthetic criteria, the FLT approach performs well The following discussion about dynamic aes- Figure ... criterion, the parameters of the visualisation can be adapted For example, for node-link representations almost arbitrary node positions and edge routes can be chosen In contrast, for matrix visualisations...

Ngày tải lên: 07/03/2014, 17:20

... as usual, and use T for a formula which is always true, I for a formula which is always false The semantics of QDL is as for first order logic, with the following clauses for the program modalities ... preconditions as formulas of FOL Simplifying the preconditions using a simplifier for FOL formulas Evaluating the resulting formulas in a database model The current implementation produces for an input ... yields no output for a given input fails for that input A program yielding at least one output for a given input succeeds for that input A program which yields at most one output for a given input...

Ngày tải lên: 09/03/2014, 01:20

... currently the most accurate tool for Vol 48, No PRACTICE PARAMETERS FOR RECTAL CANCER screening the colon and rectum for neoplasms.18 The sensitivity of colonoscopy for colon cancer is typically ... Inadvertent Perforation Inadvertent perforation of the rectum worsens oncologic outcome and should be documented Level of Evidence: Class III; Grade of Recommendation: B Inadvertent rectal perforation ... rates.86–88 Perforation at the site of the cancer has an even greater adverse impact on local recurrence and survival than a perforation remote from the tumor site.88 Inadvertent perforation of...

Ngày tải lên: 15/03/2014, 01:20

... VISUAL QUICK pro GUIDE PHP and MySQL for Dynamic Web Sites Fourth Edition Larry ULLman Peachpit Press Visual QuickPro Guide PHP and MySQL for Dynamic Web Sites, Fourth Edition Larry Ullman ... transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher For information on getting permission for reprints ... with PHP 35 Creating an HTML Form Handling an HTML Form Conditionals and Operators Validating Form Data Introducing Arrays For and While Loops Review and Pursue...

Ngày tải lên: 23/03/2014, 03:20

... processes ◆ Almost always have HTML forms, so that people can perform searches, provide feedback, and so forth What Are Dynamic Web Sites? ◆ Figure i.1 The home page for PHP x ◆ Often have interfaces ... transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher For information on getting permission for reprints ... applications than merely sites Dynamic Web sites Respond to different parameters (for example, the time of day or the version of the visitor’s Web browser) ◆ Have a “memory,” allowing for user registration...

Ngày tải lên: 05/04/2014, 19:42

... Operating Parameters Considered for Flame Lift Off 6-6 Table of Contents Page i This information is distributed solely for the purpose of pre-dissemination peer review under applicable information ... the parameters important for good flare performance for non-assisted, steam-assisted, and air-assisted flares cannot be applied to pressure-assisted, or other flare designs without further information ... flare performance with varying levels of steam (for steam-assisted flares); or air (for air-assisted flares); and high wind and flame lift off (for both types of flares) 2.1 Flare Performance...

Ngày tải lên: 28/05/2014, 14:40

... had been performed in addition to femoral derotation osteotomy Therefore, femoral derotation osteotomy may improve the dynamic psoas length possibly by moving the lesser trochanter forward However, ... The gait analysis laboratory was equipped with a Vicon 370 (Oxford Metrix, Oxford, UK) system consisting of seven CCD cameras and two force plates Motion was captured while the subjects walked barefoot ... included for analysis Validity of kinematic and kinetic variables, and psoas length in hip flexor function There are no gold standards for measuring hip flexor function during gait Therefore, the...

Ngày tải lên: 19/06/2014, 08:20