Abstract：
:The values of the propagation coefficient measured on a silicon rubber tube in the frequency range 1-15 Hz were compared, using four different equations. The first formula is based on three simultaneous pressure measurements performed at equidistant points; the remaining three equations are original, and make use of only two of the three pressure measurements together with a no-flow condition at the terminal tube section. The results of our trials demonstrate that the experimental phase velocity, obtained with all equations, settles at a value about 25% in excess of the theoretical one computed with a classic linear mathematical model. This result may be explained by an increase in the dynamical Young modulus with respect to that measured in static conditions. However, the three-point method introduces great errors in the results in the frequency range 11-14 Hz where the spectrum of the second signal becomes minimum. In all cases, the experimental value of attenuation per wavelength at mid-high frequencies is greater than the theoretical one valid for a purely elastic tube. The attenuation values obtained with the two-point method can be explained by introducing a small contribution of wall viscoelasticity (2-3 degrees) into the linear model. Attenuation per wavelength computed with the three-point methods turns out about threefold that computed with each of the two-point formulas. This result supports the idea that the accuracy of the three-point method may be insufficient to achieve correct estimation of wave attenuation, especially when the distance between transducers is small compared to wavelength.
journal_name
Biomed Mater Engjournal_title
Bio-medical materials and engineeringauthors
Ursino M,Artioli Esubject
Has Abstractpub_date
1992-10-01 00:00:00pages
155-69issue
3eissn
0959-2989issn
1878-3619journal_volume
2pub_type
杂志文章abstract：:A layer of L-glycine-molecule-imprinted polyaniline (LMIP-PANI) polymer film has been modified on a carbon fiber electrode for the determination of L-glycine standard samples and L-glycine in cerebrospinal fluid of wistar mice. It has been found that a linear relationship exists between current and concentration for t...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-130907
更新日期：2014-01-01 00:00:00
abstract：:The biological, biochemical, mechanical, and structural properties of artificial scaffolds for tissue engineering are known to be of great importance. Therefore, in this study a hydrogel derived scaffold with biomechanical and structural properties similar to native articular cartilage was synthesized. The gelatine-ba...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Stroke is a major cause of death and disability throughout the world. Subtotal occlusion of the carotid artery is an important risk factor for stroke. Carotid artery stenting (CAS) is increasingly being used for treatment of carotid artery stenosis. There are many reports on treating carotid artery stenosis by CAS; ho...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-2012-0687
更新日期：2012-01-01 00:00:00
abstract：:Metal patch test is often used in clinical settings when metal-induced contact dermatitis is suspected. However, the transdermal permeation behavior of metal ions from the patch test remains unclear. Current patch tests using high concentrations of metal salt solutions have some side effects, e.g. acute skin reactions...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-151543
更新日期：2015-01-01 00:00:00
abstract：BACKGROUND:Accelerated hydrothermal aging has long been one of the most widely accepted quality control tests for simulating low-temperature degradation (LTD) in zirconia-containing implants used in total hip arthroplasty (THA). However, it is still unclear how much consistency there is between the experimental predict...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-201083
更新日期：2020-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-151558
更新日期：2015-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-141023
更新日期：2014-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:The debris generated by the progressive wear of total joint replacement (TJR) devices is considered a primary cause of osteolysis, bone resorption, and premature failure of artificial hips and knees. The vast majority of this debris originates from the UHMWPE articulating surfaces caused by tribological interaction wi...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-140997
更新日期：2014-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-2010-0634
更新日期：2010-01-01 00:00:00
abstract：:In recent years, there is an increasing utilization and demand to use magnetic fields in bioengineering applications due to its beneficial effects. Although in the last decade more attention has been given by tribologists to the electromagnetic processes taking place between sliding surfaces, which influence the tribo...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Reoperation of aldehyde tanned bioprotheses due to calcific degeneration remains their major drawback. Based on experiments studying mechanisms and factors that influence the time phase, extent and progression of calcification and evaluating the efficiency of anticalcification treatments and the effects of surface see...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:Hydroxyapatite has been rubbed against ultra-high-molecular-weight-polyethylene (UHMWPE) under calcium-containg aqueous solutions. Further, hardness tests were carried out in air and in calcium-containing solutions whose pH ranged from pH 5 to pH 9. Hardness was found to vary with pH with a peak at around pH 7, i.e. -...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：BACKGROUND:Gait analysis, such as portable gait rhythmogram (PGR), provides objective information that helps in the quantitative evaluation of human locomotion. OBJECTIVE:The purpose of this study was to assess the reliability of PGR in post-stroke patients. METHODS:Two raters (A and B) examined 48 post-stroke patien...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-206007
更新日期：2020-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章,评审
doi：10.3233/BME-161568
更新日期：2016-05-12 00:00:00
abstract：PURPOSE:To establish a method for mouse coronary angiography in vivo using synchrotron radiation, which is essential for physiological and pathological research on coronary diseases. METHODS:1) The imaging parameters (e.g., photon energy, spatial resolution of the detector, and injection rate of contrast agent) optima...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-130937
更新日期：2014-01-01 00:00:00
abstract：:Sino-atrial node cells (SANCs) play a significant role in rhythmic firing. To investigate their role in arrhythmia and interactions with the atrium, computer simulations based on cellular dynamic mathematical models are generally used. However, the large-scale computation usually makes research difficult, given the li...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-151365
更新日期：2015-01-01 00:00:00
abstract：:A novel technique and product for carpal tunnel microscopic surgical procedures using a modified medical device containing a head as a surgical scalpel under light guidance were designed and studied. The novel design of the medical device was developed and applied in a new carpal tunnel microscopic surgical procedure ...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-151303
更新日期：2015-01-01 00:00:00
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journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-130801
更新日期：2014-01-01 00:00:00
abstract：:The thrust of the present work is the demonstration of the feasibility of using an enzyme-linked immunosorbent assay (ELISA) for the detection and quantification of a monoclonal antibody human serum. The antibodies used, 7E3 and D3GP3, have been proposed as platelet receptor blockers, being directed specifically again...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:Recent advances of fundamental research on the in vitro generation of red blood cells (RBCs) from hematopoietic stem cells in the laboratory open new possibilities of the utilization of cultured RBCs in transfusion medicine. We study the economic challenge of the setup and development of the mass industrial production...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-141251
更新日期：2015-01-01 00:00:00
abstract：:Alginate hydrogels have been used widely in tissue engineering for cell encapsulation for several reasons: low toxicity, the ability to gel under gentle condition and compatibility with cells. In this study, we determined the effect of different concentrations of alginate on encapsulation of 3T3 fibroblast cells at tw...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-2011-0665
更新日期：2011-01-01 00:00:00
abstract：:The cilia, presenting a rotational movement in the embryonic nodes, play a crucial role in the left-right specification during embryogenesis. The characteristic architecture of these cilia is based on a cylindrical arrangement of 9 doublet microtubules and the motion of the cilia is triggered by the dynein motors loca...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-141063
更新日期：2014-01-01 00:00:00
abstract：:Using a wet method, we have synthesized octacalcium phosphate carbonate, in which HPO42- in octacalcium phosphate is replaced with CO32-. The physical, crystal, and chemical properties of this new material were compared to octacalcium phosphate, Ca-deficient hydroxyapatite, and Ca-deficient carbonate apatite using X-r...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-171651
更新日期：2017-01-01 00:00:00
abstract：:Fracture toughness (KIC), critical stress intensity factor, and bending strength of 3 types of commercially available dental composite resins (macrofilled, hybrid and microfilled type) were determined using three point bend specimens. Acoustic Emission (AE), which is the generation of elastic wave due to the release o...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:Mechanical testing has been performed to characterize the locking strength of Morse taper locks used for reconstruction of large bone defects. Taper joint pairs were locked with a series of compressive loads increasing from 500 to 3500 N. Following each load application the taper locks were distracted with either an a...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Low-dose computed tomography reconstruction is an important issue in the medical imaging domain. Sparse-view has been widely studied as a potential strategy. Compressed sensing (CS) method has shown great potential to reconstruct high-quality CT images from sparse-view projection data. Nonetheless, low-contrast struct...
journal_title：Bio-medical materials and engineering
pub_type： 杂志文章
doi：10.3233/BME-151437
更新日期：2015-01-01 00:00:00
