Search Results

1 - 10 of 30 items :

  • "Measurement" x
  • Biomedical Engineering x
Clear All
Corrosion inhibition of iron surfaces with phosphatidic acid

) 713.3 1.4 11.3 Ave. FeOOH(5) 714.1 1.9 6.3 CasaXPS software. In this approach the peak positions, FWHM and relative intensities of the peak series for each species are fixed; only the intensities of the entire series are altered to fit the experimental data. As the table shows, there is a distinct shift between the Fe 2 O 3 and FeOOH peak series that allows for qualitative assessment of the presence of the three iron species. Ellipsometry measurements Layer thicknesses were measured using a Picometer Ellipsometer (Beaglehole

Open access
Indoor air pollution and the contribution of biosensors

sampling location will be required to increase measurement accuracy ( 53 ). Therefore, a network of sensors will be necessary to provide efficient and effective information on the indoor air pollutant content. In addition to identification, specific concentrations is the most important and valued data for air pollution control. Figure 2 Green box: “Samples introduced to the sensing part of the sensor”; Pink box: “Tested analyte changes the chemical or physical properties of the sensing part and produces a measurable signal”; Orange box: “For increasing the

Open access
Retrospective study of 37 Cavalier King Charles Spaniel dogs diagnosed with Chiari-like malformation and Syringomyelia

.8% Tail chasing 2 5.4% Seizures 1 2.7% Unilateral facial paralysis 1 2.7% Veterinary Association SM classification scheme, to each patient was assigned a certain degree of SM. With the help of a medical image viewer program (Horos™) we evaluated the MRI findings - cerebellar indentation or herniation through the foramen magnum, performed measurements of the spinal cord cavities, in transverse plan, and as well in sagittal plan. Syrinx dimensions and locations are evaluated using standard sequences, appearing hypointense on T1W and

Open access
Controlling beer filtration process through implementation of enzymatic and microbiological techniques

optimal filtration process ( 4 , 7 ). Material and Methods Experiments were carried out in industrial and experimental scale at “Stefani & Co” brewery in Tirana, Albania. In experimental scale were used two kinds of different malt. Good quality and bad quality malt. At “Stefani & Co” brewery it is used kieselguhr candle filter. All measurements were carried out for the same beer brand (primitive extract 10.80Ba and fermentation-maturation standard conditions). Testing methods are taken from Analytica EBC and Analytica-EBC Microbiologica. ( 5 , 6 ). The results

Open access
Low-frequency ultrasound can drive the transport of nanoparticles and molecules in polymer gels for biotechnology applications

. Results In vitro experiments to confirm physical mechanism of ultrasound-stimulated delivery This experiment was conducted in 2 parts with gold tracer nanoparticles incorporated in the “tracer-gel”, which were (i) measurement of the transmittance in the “receiver-gel” at a distance of x=1mm below the interface, and (ii) measure of the transmittance in the “receiver-gel” at a distance of x=2mm below the interface. A negative control experiment was conducted to confirm whether changes in transmittance were due to transport of potential degradation products of the

Open access
Fluorescence lifetime imaging of red yeast Cystofilobasidium capitatum during growth

as a tool for investigation and visualisation of carotenoids and lipids formation and storage inside the cells. For such an investigation high resolution techniques like laser scanning confocal microscopy (LSCM) should have to be used. Comparison of model systems (liposomes, micelles) with real natural structures of cells is rather unique in this field. Carotenoid-lipid interactions were studied only in the context of delivery systems ( 6 ), and fluorescence is also frequently used for such studies, but not as a carotenoid lifetime measurement like in the

Open access
What does the water inside the brain tell us? Diffusion tensor imaging

DtiStudio. There are two main analytical methods voxel-based analysis (VBA) and region-of-interest (ROI) analysis that can be applied in the investigation of DTI measurements. Many recently published studies use the specific ROIs approach however the subjectivity of the choice and placement of ROIs brings some limitation for this method ( 13 ). Voxel-based analysis (VBA) methods based on statistical parametric mapping, popular for unbiased whole-brain analysis of DTI data, have also been published ( 8 , 13 , 15 ). VBA provides a complete overview of white matter

Open access
A comparison of machine learning algorithms for the prediction of Hepatitis C NS3 protease cleavage sites

Soc Ser D (The Stat. 1998;47(1):183–9. 44. Kim TK. T test as a parametric statistic. Korean J Anesthesiol. 2015/11/25. 2015 Dec;68(6):540–6. 45. Kim H-Y. Analysis of variance (ANOVA) comparing means of more than two groups. Restor Dent Endod. 2014/01/20. 2014 Feb;39(1):74–7. 46. Spearman C. The proof and measurement of association between two things. Am J Psychol. 1904;15(1):72–101. 47. Chakrabarti K, Keogh E, Mehrotra S, Pazzani M. Locally Adaptive Dimensionality Reduction for Indexing Large Time Series Databases. ACM Trans Database Syst

Open access
Motion artifact detection in colonoscopy images

digital images ( 3 ). Iman et al. proposed the Wiener filtering method to make images deblur and eliminate noise on medical images such as colon, brain, and lung ( 4 ). Norman et al. proposed another quality measurement study but they used digital image power spectrum to measure the quality of an image ( 5 ). Hanghang et al. supposed that Harr wavelet transform was an efficient method to detect a blurred image. That study also gave information about the blurredness level of the image ( 6 ). Arnold et al. conducted a similar study by using discrete wavelet transform (DWT

Open access
Defense manifestations of enzymatic and non-enzymatic antioxidants in Ricinus communis L. exposed to lead in hydroponics

acclimatization, saplings of uniform height were selected and treated separately with Pb(NO 3 ) 2 at different concentrations (200 μM and 400 μM) maintained under above conditions. The control plants were without metal treatment. Roots excised after ten days of treatment processed for analysis at various endpoints described as follows. Chlorophyll fluorescence Chlorophyll a (Chl a) fluorescence variables were measured on same leaves which were used previously for leaf gas exchange measurements by using MINI- version of imaging PAM (Heinz Walz GmbH, Effeltrich, Germany

Open access