نتایج جستجو برای: gravimetric

تعداد نتایج: 3434  

Journal: :Bio-medical materials and engineering 2014
Jang-Zern Tsai Ching-Jung Chen Dung-Ting Shie Jen-Tsai Liu

The piezoelectric biosensor have been widely used in ultra-small mass detection of biomolecular, based on PZT piezoelectric material can create a variety of compositions geometrically; it could widely develop a high-frequency resonator and measure the change of the slightest mass while improve the limited detection simultaneously. Therefore, the piezoelectric biosensor of this study was fabrica...

Journal: :Clinica chimica acta; international journal of clinical chemistry 2009
Nichole L Korpi-Steiner Jennie N Ward Vivek Kumar Joseph P McConnell

BACKGROUND Fecal-fat is typically measured by extracting lipid from homogenized feces with subsequent gravimetric/titrimetric analyses that are time-consuming and involve toxic solvents. Accordingly, an efficient and more safe method to quantitate fecal-fat is needed. The present objective was to adapt CEM SmartTrac technology (i.e. (1)H NMR) to rapidly (< 5 min) quantitate fecal-fat and compar...

Journal: :Remote Sensing 2015
Jesús Pacheco-Martínez Enrique Cabral-Cano Shimon Wdowinski Martín Hernández-Marín José Ángel Ortiz-Lozano Mario Eduardo Zermeño-de-León

In this work we present an application of InSAR and gravimetric surveys for risk management related to land subsidence and surface ground faulting generation. A subsidence velocity map derived from the 2007–2011 ALOS SAR imagery and a sediment thicknesses map obtained from the inversion of gravimetric data were integrated with a surface fault map to produce a subsidence hazard zoning in the cit...

2003
L. Francis J. - M. Friedt R. De Palma P. Bertrand A. Campitelli

Influence of electromagnetic interferences on the gravimetric sensitivity of surface acoustic waveguides. Abstract Surface acoustic waveguides are increasing in interest for (bio)chemical detection. The surface mass modification leads to measurable changes in the propagation properties of the waveguide. Among a wide variety of waveguides, Love mode has been investigated because of its high grav...

2017
Saverio Affatato Filippo Zanini Simone Carmignato

Wear is currently quantified as mass loss of the bearing materials measured using gravimetric methods. However, this method does not provide other information, such as volumetric loss or surface deviation. In this work, we validated a technique to quantify polyethylene wear in three different batches of ultrahigh-molecular-polyethylene acetabular cups used for hip implants using nondestructive ...

2012
J. J. Purewal D. Liu J. Yang A. Sudik S. Maurer U. Müller

The metal-organic framework MOF-5 has attracted significant attention due to its ability to store large quantities of H2 by mass, up to 10 wt.% absolute at 70 bar and 77 K. On the other hand, sinceMOF-5 is typically obtained as a bulk powder, it exhibits a lowvolumetric density andpoor thermal conductivitydboth ofwhichareundesirable characteristics for ahydrogen storage material. Here we explor...

2005
R. J. Gustafsson A. Orlov C. L. Badger P. T. Griffiths R. M. Lambert

The hygroscopicity of mineral aerosol samples has been examined by three independent methods: diffuse reflectance infrared Fourier transform spectroscopy, thermo-gravimetric analysis and differential mobility analysis. All three methods allow an evaluation of the water coverage of two samples, CaCO 3 and Arizona Test dust, as a func-5 tion of relative humidity. For the first time, a correlation...

2014
Glécio Machado Siqueira Jorge Dafonte Dafonte Montserrat Valcárcel Armesto Ênio Farias França e Silva

The apparent soil electrical conductivity (ECa) was continuously recorded in three successive dates using electromagnetic induction in horizontal (ECa-H) and vertical (ECa-V) dipole modes at a 6 ha plot located in Northwestern Spain. One of the ECa data sets was used to devise an optimized sampling scheme consisting of 40 points. Soil was sampled at the 0.0-0.3 m depth, in these 40 points, and ...

Journal: :Circulation research 1975
J H Ellis J F Murray

The effects of norepinephrine-induced vasoconstriction on pulmonary extravascular water volume (PEWV) and central volume were studied before and after intravenous volume expansion with 5% dextrose and water (20 ml/kg body weight). PEWV was measured by double isotope dilution and gravimetric analysis and assessed by electron photomicrography. Comparisons were made with saline-treated control dog...

Journal: :The Journal of surgical research 1996
D M Nierman D I Eisen E D Fein E Hannon J I Mechanick E Benjamin

We used a porcine endotoxemic model of acute lung injury to compare extravascular lung water (EVLW) measured by right transthoracic bioimpedance to postmortem gravimetric EVLW measurements. Adult pigs were randomized into control (N = 5) or endotoxin groups [150 microgram/kg Escherichia coli lipopolysaccharide B for 1 hr followed by 3 hr of resuscitation for a thermodilution cardiac output less...

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