Search Results

71 - 80 of 296 items :

Clear All
Corrosion inhibition of iron surfaces with phosphatidic acid

-346. 10.1021/ar200119g 22011002 Hotchkiss PJ Jones SC Paniagua SA Sharma A Kippelen B Armstrong NR Marder SR Accounts of Chemical Research 2012 45 337 346 23 Richter R, Mukhopadhyay A and Brisson A, Biophysical Journal 2003, 85, 3035-3047. 10.1016/S0006-3495(03)74722-5 14581204 Richter R Mukhopadhyay A Brisson A Biophysical Journal 2003 85 3035 3047 24 Richter R, Berat R and Brisson AR, Langmuir 2006, 22, 3497-3505. 16584220 10.1021/la052687c Richter R Berat R Brisson AR Langmuir 2006

Open access
A LabVIEW-based electrical bioimpedance spectroscopic data interpreter (LEBISDI) for biological tissue impedance analysis and equivalent circuit modelling

, 25 , 26 ] reveal the impedance response of biological tissues at one, two or more specified frequencies (f). EIS has been proven as an effective technique for noninvasive tissue characterization in medical, biomedical and biological applications [ 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Because EIS is a more generalized method that provides impedance variations over a wide range of frequencies, it can be used on its own to provide information that explains other bioelectrical phenomena like dielectric polarization [ 37 , 38 , 39 , 40 , 41

Open access
Biocomposites based on collagen and keratin with properties for agriculture and industrie applications

.01 10 17.03 16.67 12 19.50 18.25 14 21.51 17.60 20 29.58 22.47 25 66.22 26.19 32 71.91 32.75 Other important characteristics for seed treatment applications are water vapor permeability and water absorption of films, being closely related to the physiological processes that develop during seed germination and sprouting. Determinations of these characteristics for the two films are shown in Figs. 4 and 5 Figure 4 Permeability to water vapors. Figure 5 Water vapor absorption. As the

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

incubated at room temperature for 1 hour. The TPC was measured at 760 nm by plotting the gallic acid calibration curve ( 34 ). Total flavonoids were measured by the aluminum chloride colorimetric assay. 0.1 mL of extract was mixed with 0.3 mL each of 5% NaNO 2 and 10% AlCl 3 followed by 2 mL of 1M NaOH and absorbance was measured at 510 nm. The total flavonoids were assessed by plotting catechol as standard ( 35 ). For electrolyte leakage (EL), fresh leaf samples (0.3 g) were washed with distilled water and placed in closed vials (10 ml, deionized) and incubated at 25

Open access
Peripheral vein detection using electrical impedance method

lists the electrical resistivity of forearm biological tissues at a frequency of 100 kHz [ 6 ]. Table 1 The electrical resistivity of forearm biological tissues. Tissue Electrical resistivity ρ [Ωm] Muscle tissue 2.76 ± 0.3 Connective tissue 2.5 ± 0.5 Blood 1.42 ± 0.6 Nerve 12.5 ± 0.5 Subcutaneous fat 25 ± 0.7 Blood vessel wall 3.13 ± 0.2 Materials and methods To perform electrical impedance measurements, a special electrode system was designed to be attached to the study area. The electrode system

Open access
Genetic testing for vascular anomalies

W, Martin L, Hadj-Rabia S, Terkeltaub R, Rutsch F. Generalized arterial calcification of infancy and pseudoxanthoma elasticum can be caused by mutations in either ENPP1 or ABCC6. Am J Hum Genet 2012; 90(1): 25-39. 10.1016/j.ajhg.2011.11.020 22209248 Nitschke Y Baujat G Botschen U Wittkampf T du Moulin M Stella J Le Merrer M Guest G Lambot K Tazarourte-Pinturier MF Chassaing N Roche O Feenstra I Loechner K Deshpande C Garber SJ Chikarmane R Steinmann B Shahinyan T Martorell L Davies J

Open access
Contributions of biotechnology to meeting future food and environmental security needs

pathogen protection in the world’s most important vegetable crop seems secure ( 24 ). Okanagan Specialty Fruits, of Canada have used a RNA interference approach, to silence four poly-phenol oxidase genes in Granny Smith and Golden Delicious apple genotypes. These apples, which are deregulated in the United States, have decreased wastage by a reduced propensity to browning whilst retaining other aspects of apple attractiveness ( 25 , 26 ). University of Florida biotechnologists have demonstrated that losses of strawberry crops due to anthracnose crown rot, angular leaf

Open access
Shapley-Folkman-Lyapunov theorem and Asymmetric First price auctions

interval ( a , b ), then this function is concave on ( a , b ) if: ∀ x ∈ ( a , b ), f ″( x ) < 0. Or a C 2 function: g : A → R n on the open and convex set A ⊂ R n is concave if and only if ∂ 2 f ( x ) < 0 and is semidefinite for all x , then f is strictly concave. In the literature of this king very important term is marginal cost pricing equilibrium which is a family of consumption, production plans, lump sum taxes and prices such that such that households are maiming their utility subject to their budget constraints and firms production plans

Open access
Dielectrical properties of living epidermis and dermis in the frequency range from 1 kHz to 1 MHz

OCT [16] 65.1±8.9 8 31 - 37 OCT [17] SC (μm) 12.9±3.8 6 25 - 31 TEWL/Stripping [18] 12.3±3.6 6 33.2±3.1 TEWL/Stripping [19] 9.58±0.8 10 23 - 47 Reflectance CM [12] 10.4±3.2 13 18 - 25 CLSM [20] 22.6±4.33 14 23 - 49 CRS [21] 18±3.9 14 28 - 50 CRS [22] 10.4±0.9 9 23 - 55 OCT [22] 13.07±2.12 19 20 - 29 OCT [16] 18±2 2 23 - 25 CRS [23] DE (mm) 1.02±0.10 44 21 - 30 US 20MHz B scanner [24] 1

Open access
Shear strength of compacted Chlef sand: effect of water content, fines content and others parameters

2.653 0.08 0.38 5.28 1.70 0.487 0.811 Sand-silt mixtures 20 2.656 0.04 0.33 9.80 1.92 0.455 0.776 30 2.659 0.03 0.32 13.31 0.84 0.421 0.749 40 2.662 0.02 0.25 15.17 0.01 0.489 0.803 Chlef silt 100 2.667 - 0.03 - - 0.593 0.783 Table 2 Chemical analysis of tested materials [ 3 ]. Composition (%) Chlef sand Chlef silt Fire loss 14.34 10.85 Total Silica (SiO 2 ) 55.89 48.95 Alumina (Al 2 O 3 ) 5.58 34.08 Oxide of iron (Fe 2

Open access