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2.480 Aktuelle Fachpublikationen zum Thema temperature

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Simultaneous three-dimensional temperature and velocity field measurements using astigmatic imaging of non-encapsulated thermo-liquid crystal (TLC) particles

25.11.2014 | Rodrigo Segura; Massimiliano Rossi; Christian Cierpka; Christian Kaehler, Lab on a Chip, 2014

A combination of cutting edge developments is presented to characterize three-dimensional (3D) temperature and velocity fields in microscopic flows. An emulsion of non-encapsulated thermo-liquid crystal (TLC) micro spheres, with a narrow size distribution is used to track the flow's motion and ...

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Applications of hydrophilic interaction chromatography to Amino Acids, Peptides and Proteins

21.11.2014 | Aurélie PERIAT, Ira S. KRULL, Davy GUILLARME, Journal of Separation Science, 2014

This review summarizes the recent advances in the analysis of amino acids, peptides and proteins using hydrophilic interaction chromatography. Various reports demonstrate the successful analysis of amino acids under such conditions. However, a baseline resolution of the 20 natural amino acids ...

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Sensors, Vol. 14, Pages 22065-22081: Development of a Personal Integrated Environmental Monitoring System

20.11.2014 | Wong, Man Sing; Yip, Tsan Pong; Mok, Esmond, Sensors, 2014

Environmental pollution in the urban areas of Hong Kong has become a serious public issue but most urban inhabitants have no means of judging their own living environment in terms of dangerous threshold and overall livability. Currently there exist many low-cost sensors such as ultra-violet, ...

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Structural phase transitions in loparite‐(Ce): evidences from Raman light scattering

19.11.2014 | E. A. Popova, V. N. Yakovenchuk, S. G. Lushnikov, S. V. Krivovichev, Journal of Raman Spectroscopy, 2014

Raman spectroscopic studies of loparite‐(Ce), a mineral of the perovskite family, are presented. Polarized Raman spectra were obtained in the temperature range of 50–300 K. As analysis of the behavior of Raman modes showed, the temperature dependences of wavenumber, damping and intensity of the ...

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Nucleation and growth of Ge nanoclusters on the Si(111)‐(7 × 7) surface studied by scanning tunneling microscopy

19.11.2014 | Yongping Zhang, Zhiqian Chen, Guo Qin Xu, Eng Soon Tok, Surface and Interface Analysis, 2014

Nucleation and growth of two‐dimensional Ge nanoclusters on the Si(111)‐(7 × 7) surface at elevated substrate temperatures have been studied using scanning tunneling microscopy. The uniformity of the Ge nanoclusters is improved with the increase of substrate temperature, and ordered Ge ...

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Adsorption of formic acid on Si(111)7 × 7 at room temperature: a valence band photoemission and Si2p photodesorption study

19.11.2014 | Marilena Carbone, Surface and Interface Analysis, 2014

Formic acid is the simplest of the carboxylic acids and a model adsorption system for several surfaces. In spite of the simple structure, formic acid reactivity and photoreactivity may be quite complex. In this paper, a study is presented on the deuterated formic acid adsorption on Si(111)7 × 7 ...

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Single step derivatization with CF3 enone of thiophene at ambient temperature to determine propellant grade hydrazines: a study by GC and GC-MS

19.11.2014 | Selvakumar Subramanian; Somanathan Narayanasastri; Audisesha Reddy Kami Reddy, Analyst, 2014

A simple, highly selective and rapid gas chromatography method (packed column with flame ionization detection) has been developed to determine hydrazine and monomethylhydrazine individually and for selective determination of hydrazine in the UH 25 mixture in organic medium. This method is based ...

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Fine structuration of low-temperature co-fired ceramic (LTCC) microreactors

18.11.2014 | Bo Jiang; Julien Haber; Albert Renken; Paul Muralt; Lioubov Kiwi-Minsker; Thomas Maeder, Lab on a Chip, 2014

The development of microreactors that are operating under harsh conditions is always of great interests for many applications. Here we present a microfabrication process based on low-temperature co-fired ceramic (LTCC) technology for producing microreactors, which are able to perform chemical ...

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Sensors, Vol. 14, Pages 21826-21842: Design of a WSN for the Sampling of Environmental Variability in Complex Terrain

18.11.2014 | Martín-Tardío, Miguel A.; Felicísimo, Ángel M., Sensors, 2014

In-situ environmental parameter measurements using sensor systems connected to a wireless network have become widespread, but the problem of monitoring large and mountainous areas by means of a wireless sensor network (WSN) is not well resolved. The main reasons for this are: (1) the ...

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Multiwall Carbon Nanotube‐Ionic Liquid Modified Paste Electrode as an Efficient Sensor for the Determination of Diazepam and Oxazepam in Real Samples

17.11.2014 | M. A. Zare, M. Saber Tehrani, S. Waqif Husain, P. Aberoomand Azar, Electroanalysis, 2014

Abstract A carbon‐based electrode using multiwall carbon nanotube as a modifier and room temperature ionic liquid as a binder has been applied for the determination of diazepam (DZP) and oxazepam (OZP) in real samples including serum, urine and tablets. Square wave voltammetry as an ...

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