نتایج جستجو برای: pre ionization

تعداد نتایج: 349227  

Journal: :Epj Web of Conferences 2023

Electron cyclotron heating (ECH) breakdown and burn-through assist has been adopted to make the ITER start-up, which uses a low toroidal electric field of about 0.3 V/m, more robust. Related studies have carried out on many fusion machines such as DIII-D, JT-60U, Tore Supra FTU. However, required ECH power ensure an effective at is not yet clear. Experiment was also performed in J-TEXT determin...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1392

to teach english adequately, qualified teachers are needed. unfortunately, there are still teachers who are teaching english without an academic degree in tefl. it is necessary for teachers to have a major in english to have subject knowledge, but it is not sufficient. teachers need to have an understanding of the social, cultural, moral, ethical, and pedagogical issues of education and practic...

2014
Frances Wong Brian Cox

Abbreviations: sFlt-1: Soluble fms-Like Tyrosine Kinase-1; PlGF: Placental Growth Factor; 2DE: 2-Dimensional Gel Electrophoresis; MALDI: Matrix-Assisted Laser Desorption/Ionization; TOF: Timeof-Flight; LC: Liquid Chromatography; ESI: Electrospray Ionization; C8: Complement Component 8; C9: Complement Component; MAC: Membrane Attack Complex; C3: Complement Component 3; C5a: Complement Component ...

Journal: :Mathematical Physics, Analysis and Geometry 2004

Journal: :AMIA ... Annual Symposium proceedings. AMIA Symposium 2006
Nicola Barbarini Paolo Magni Riccardo Bellazzi

In the last few years a growing interest has been devoted to disease diagnosis based on proteomic profiles of body fluids generated by mass spectrometry. In this work, we will present a new approach for their analysis for biomarker discovery. In particular, we will describe a new strategy for the analysis of SELDI/MALDI-TOF serum data based on the following three steps: i) data-preprocessing, i...

Journal: :The American Journal of the Medical Sciences 1921

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2001
parviz rashidi ranjbar ali mohajeri mehran ghiaci

the ability of the present semiempirical quantum mechanics methods are surveyed for reproducing the transannular interaction in the bifunctional n-phenyl-5-azocanones. the am1 method is the best with the order of reliability being am1, pm3, mndo and mindo/3. am1 calculations were then carried out for quantification of transannular interaction. the n(o) ionization potential has been used for thi...

Journal: :Journal of chromatography. A 2009
Risto Kostiainen Tiina J Kauppila

The most widely used ionization techniques in liquid chromatography-mass spectrometry (LC-MS) are electrospray ionization (ESI), atmospheric pressure chemical ionization (APCI) and atmospheric pressure photoionization (APPI). All three provide user friendly coupling of LC to MS. Achieving optimal LC-MS conditions is not always easy, however, owing to the complexity of ionization processes and t...

Journal: :Analytical chemistry 2012
Jiahui Peng Noah Puskas Paul B Corkum David M Rayner Alexandre V Loboda

We describe a novel ion source for analytical mass spectrometry based on femtosecond laser ionization at pressures at and above atmospheric and characterize its performance when coupled to a tandem quadrupole/time-of-flight mass spectrometer. We assess source saturation limits, ionization and sampling efficiencies, the effective ionization volume, and limits of detection. We demonstrate 100% ef...

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