The left atrial appendage was not visualized on TEE A cardiac CT

The left atrial appendage was not visualized on TEE. A cardiac CT clarified that there was a left atrial appendage and provided an explanation as to why it was not visualized on TEE, highlighting the importance of multimodality imaging in patients with complex congenital heart disease. (C) 2012 Society of Cardiovascular Computed Tomography. All rights reserved.”
“Multiple different pathological protein aggregates are frequently seen in human postmortem brains and hence mixed pathology is common. Mixed dementia on the other hand is less frequent and neuropathologically should only be diagnosed if criteria for more than one full blown disease are met. We quantitatively

measured the amount of hyperphosphorylated microtubule associated tau (HP-tau), amyloid-beta protein (A beta) and alpha-synuclein (alpha-syn) in cases that were neuropathologically diagnosed as mixed Alzheimer’s disease selleck products (AD) and neocortical Lewy body disease (LBD) but clinically presented

either as dementia due to AD or LBD, the latter including dementia with Lewy bodies (DLB) and Parkinson’s disease dementia (PDD). Our study group consisted of 28 cases (mean age, 76.11 SE: +/- 1.29 years; m:f, 17:11) selleck compound of which 19 were neuropathologically diagnosed as mixed AD/DLB. Clinically, 8 mixed AD/DLB cases were diagnosed as AD (cAD), 8 as DLB (cDLB) and 3 as PDD (cPDD). In addition, we investigated cases that were both clinically and neuropathologically diagnosed as either AD (pure AD; n = 5) or DLB/neocortical LBD (pure DLB; n = 4). Sections from neocortical, limbic and subcortical areas were stained with antibodies against HP-tau, A beta and alpha-syn. The area covered by immunopositivity was measured using image analysis. cAD cases had higher HP-tau loads than both cDLB and cPDD and the distribution of HP-tau in cAD was similar to the one observed in pure AD whilst cDLB showed comparatively less hippocampal HP-tau load. cPDD cases showed lower HP-tau and A beta loads and higher alpha-syn loads. Here, we show that in neuropathologically mixed AD/DLB cases both the amount and the topographical distribution

of pathological protein aggregates differed between distinct clinical phenotypes. Large-scale clinicopathological correlative studies using a quantitative methodology click here are warranted to further elucidate the neuropathological correlate of clinical symptoms in cases with mixed pathology.”
“Wolf-Hirschhorn syndrome (WHS) is a complex congenital syndrome caused by a monoallelic deletion of the short arm of chromosome 4. Seizures in WHS have been associated with deletion of LETM1 gene. LETM1 encodes for the human homologue of yeast Mdm38p, a mitochondria-shaping protein of unclear function. Here we show that human LETM1 is located in the inner membrane, exposed to the matrix and oligomerized in higher molecular weight complexes of unknown composition.

0 mm x 2 3 mm) were harvested from porcine eyes and treated by in

0 mm x 2 3 mm) were harvested from porcine eyes and treated by incubation with genipin at concentrations of 1.00%, 0.25%, and 010%. Parallel corneal strips from the same eye were used as untreated controls After treatment at 20 degrees C for 40 minutes, tensile strain measurements were performed

in a biomaterial tester. Porcine button corneas were treated with genipin 0 25% for 15 minutes and then digested by bacterial collagenase. Treated AZD9291 price and untreated corneas were evaluated by light microscopy.

RESULTS: Young modulus and stiffness in treated corneas increased in a concentration-dependent manner Genipin increased resistance to corneal collagenase 5-fold in comparison with the controls. A decrease in the interlamellar space selleck in treated corneas was also observed.

CONCLUSIONS: Corneal collagen crosslinking induced with genipin produced a significant increase in biomechanical

strength and resistance to bacterial collagenase This crosslinker could be useful in treating corneal ectasia and corneal infectious and noninfectious diseases involving corneal melting.”
“Dense TiN and TiC samples were prepared by hot pressing using micrometric powders. Xenon species (simulating rare gas fission products) were then implanted into the ceramics. The samples were annealed for 1 h at 1500 degrees C under several degraded vacuums with P(O2) varying from 10(-6) to 2 x 10(-4) mbars. The oxidation resistance of the samples and their retention properties with respect to preimplanted xenon species were analyzed using scanning electron microscopy, grazing incidence x-ray diffraction, Rutherford backscattering spectrometry, and nuclear backscattering spectrometry. Results indicate that TiC is resistant to oxidation and does not release xenon for P(O2) <= 6 x 10(-6) mbars. When P(O2) increases, geometric

oxide crystallites appear at the surface depending on the orientation and size of TiC grains. These oxide phases are Ti(2)O(3), Ti(3)O(5), and TiO(2). Apparition of oxide crystallites LCL161 clinical trial is associated with the beginning of xenon release. TiC surface is completely covered by the oxide phases at P(O2) = 2 x 10(-4) mbars up to a depth of 3 mu m and the xenon is then completely released. For TiN samples, the results show a progressive apparition of oxide crystallites (Ti(3)O(5) mainly) at the surface when P(O2) increases. The presence of the oxide crystallites is also directly correlated with xenon release, the more oxide crystallites are growing the more xenon is released. TiN surface is completely covered by an oxide layer at P(O2) = 2 x 10(-4) mbars up to 1 mu m. A correlation between the initial fine microstructure of TiN and the properties of the growing layer is suggested. (C) 2011 American Institute of Physics. [doi:10.1063/1.

132% at 795 degrees C compared to 97 655% at 685 degrees C of unt

132% at 795 degrees C compared to 97.655% at 685 degrees C of untreated bamboo-epoxy composite. Water absorption in the composites was studied by long term immersion and 2 h boiling in distilled water. The process of water absorption indicates Fickian mode of diffusion. MAA treatment results in reduced water uptake. There was improvement in the properties of pretreated CT99021 ic50 bamboo-polyester matrix composite as well. Three percent treatment of bamboo with MAA gave optimum results

with polyester resin. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 1006-1013, 2010″
“We have recently demonstrated that coprecipitation of cimetidine (C) and piroxicam (P) at a mole ratio of 1:1 results in the transformation of the crystalline forms of both drugs to an amorphous state. In this study, coprecipitates and physical mixtures of cimetidine and piroxicam were further investigated at C/P mole ratios of 1:10, 1:5, 1:4, 1:2, 10:1, 20:1, 30:1, 40:1, and 52.5:1, the latter being the composition of a clinically used dosage. The physicochemical

properties of these MRT67307 price samples were examined using X-ray diffraction and Fourier transform infrared spectroscopy. Additionally, dissolution of piroxicam in the samples at C/P mole ratios of 10:1, 20:1, 30:1, 40:1, and 52.5:1 was investigated at pH 1.2 and pH 4. In coprecipitates with C/P mole ratios of 10:1, 20:1, 30:1, and 40:1, crystalline forms of both drugs were transformed to amorphous states. A mixture of an amorphous state and cimetidine

LY2090314 purchase crystalline form A was observed for the coprecipitate with a C/P mole ratio of 52.5:1. For the coprecipitates with C/P mole ratios of 1:2, 1:4, 1:5, and 1:10, cimetidine form A was transformed to form C, whereas piroxicam form II was modified to form I. It is interesting that small molecules, instead of polymers or solvents, can cause such crystal structure transformations. The dissolution of piroxicam at pH 4 is lower than that at pH 1.2. Additionally, the coprecipitates and physical mixtures with C/P mole ratios of 10:1, 20:1, 30:1, 40:1, and 52.5:1 demonstrate substantially higher dissolution of piroxicam compared to that of drug alone.”
“Electric-field and/or temperature induced phase transitions were observed using polarizing light microscope on [100]-oriented Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3) (PMN-0.3PT) single crystals with electric fields applied along the [001] and [011] directions, respectively. The monoclinic (M) and tetragonal (T) phases were observed with electric field applied along the [001] direction at 5 and 9 kV/cm, respectively. The orthorhombic (O) and T were observed with 5 kV/cm and 10 kV/cm electric field applied along the [011] direction, respectively. The intermediate phases [M and/or O phase (s)] were also confirmed by the temperature-dependent dielectric behavior. (C) 2010 American Institute of Physics. [doi:10.1063/1.

X-ray diffraction (XRD) analysis result revealed that the complex

X-ray diffraction (XRD) analysis result revealed that the complex was amorphous, whereas its components were semi-crystalline. In addition, the drug release behavior of the complex that contains 5-fluorouracil behaved pH-responsive. All the experimental

results verified the complex was composed of MSA and CS, and also indicated that the driving force for the self-assembly of the complex was predominantly the electrostatic interactions between two oppositely charged polyelectrolytes, cationic CS, and the anionic MSA. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 2255-2260, 2009″
“Background: Human populations exposed to low malaria transmission present particular severe risks of malaria morbidity and mortality. In addition, in a context of low-level exposure to Anopheles vector, conventional Nutlin 3 entomological methods used for sampling Anopheles populations

are insufficiently sensitive and probably under-estimate the real risk of malaria transmission. The evaluation of antibody (Ab) responses to arthropod salivary proteins constitutes a novel tool for estimating exposure level to insect bites. In the case of malaria, a recent study has shown that human IgG responses to the gSG6-PI peptide represented a specific biomarker of exposure to Anopheles gambiae bites. The objective of this study was to investigate if this biomarker can be used to estimate low-level exposure of individuals to Anopheles vector.

Methods: The IgG

Ab level to gSG6-PI was evaluated at the peak and at the end of the An. gambiae exposure season in children living BVD-523 in Senegalese villages, where the Anopheles density was estimated to be very low by classical entomological trapping but where malaria transmission occurred during the studied season.

Results: Specific IgG responses to gSG6-PI were observed in children exposed to very low-level of Anopheles bites. In addition, a significant increase in the specific IgG Ab level was observed during the Anopheles exposure season whereas classical entomological data have reported very few or no Anopheles during the studied period. Furthermore, this biomarker KU-55933 cost may also be applicable to evaluate the heterogeneity of individual exposure.

Conclusion: The results strengthen the hypothesis that the evaluation of IgG responses to gSG6-PI during the season of exposure could reflect the real human contact with anthropophilic Anopheles and suggest that this biomarker of low exposure could be used at the individual level. This promising immuno-epidemiological marker could represent a useful tool to assess the risk to very low exposure to malaria vectors as observed in seasonal, urban, altitude or travellers contexts. In addition, this biomarker could be used for the surveillance survey after applying anti-vector strategy.

The aim of this study was to explore women’s sexual behavior duri

The aim of this study was to explore women’s sexual behavior during pregnancy.

Open-ended interviews were conducted with pregnant women who were referred to the teaching clinic in Gorgan. All of the interviews were tape recorded. The data were coded and categorized as is usual in qualitative methods.

The data were categorized as “”low sex desire”", “”anxious of harmfulness”", and “”sexual myths”". Seventy-three

percent of the women reported low libido during pregnancy. Most of the participants changed their coitus positions. Forty-five percent of them preferred the “”rear position”". None of the women sought counseling or information from a doctor or midwife, due mainly to shyness in talking about sex.

Many women experience some problems in their sex life during pregnancy, which can contribute to significant emotional distress. However, women may not seek professional expertise in their attempt to alleviate AZD6094 this condition. It is important to assess the beliefs and experiences of all women, including the pregnant ones.”
“We demonstrate GaInN multiple quantum well (MQW) light-emitting diodes (LEDs) having ternary GaInN

quantum barriers (QBs) instead of conventional binary GaN QBs for a reduced polarization mismatch between QWs and QBs and an additional separate confinement of carriers to the MQW active region. In comparison with GaInN LEDs with conventional GaN QBs, the GaInN/GaInN LEDs show a reduced blueshift of the peak wavelength with increasing injection current and a reduced forward voltage. In addition, we investigate the density of pits emerging on Pexidartinib supplier top of the MQW layer that are correlated with

V-defects and act as a path for the reverse leakage current. The GaInN/GaInN MQW structure has a lower pit density than the GaInN/GaN MQW structure as well as a lower reverse leakage current. Finally, the GaInN/GaInN MQW LEDs show higher light output power and external quantum efficiency at high injection currents compared to the conventional GaInN/GaN MQW LEDs. We attribute these results to the reduced polarization mismatch and the reduced lattice mismatch in the GaInN/GaInN MQW active region.”
“Early virological response is considered Ricolinostat to be a predictor for the outcome of anti-hepatitis B virus (HBV) therapy. To analyze its correlation to intrahepatic HBV DNA and covalently closed circular DNA (ccc)DNA, 71 hepatitis B virus e antigen (HBeAg)-positive chronic hepatitis B patients were recruited: 34 patients were treated with lamivudine; 13 with interferon-alpha 2b; and 24 with sequential therapy of lamivudine-interferon-alpha 2b for 48 weeks. Intrahepatic HBV DNA and cccDNA load were measured at the baseline and at Week 48. Fifty-seven patients had virological response at Week 12. Median decreases of serum HBV DNA in patients with or without virological response at Week 12 were 4.0 log(10) (max. 6.2, min. 2.2) and 1.1 log(10) (max. 2.1, min. 0) (Z = -5.766, P = 0.

WIREs Syst Biol Med 2013, 5:1135 doi: 10 1002/wsbm 1192

WIREs Syst Biol Med 2013, 5:1135. doi: 10.1002/wsbm.1192

For further resources related to this article, please visit the WIREs website.”
“Outpatient laser ablation of palatine tonsils is a very interesting procedure that has been recently introduced selleck screening library as a routine in head and neck surgery departments. The aim of this study was to describe a new strategy using a Doppler-guided fibre optic neodymium-yttrium-aluminium-garnet (YAG) laser to remove up to 80 % of tonsillar tissue, as assessed in the long-term postoperative clinical evaluation of the volume of the tonsils at the follow-up, and leaving the capsule in place, thus avoiding any haemorrhagic complication and minimize pain. A total of 20 patients (men, n = 13; women, n = 7), aged between 6 and 63, were recruited for the procedure. They were affected by chronic hypertrophic tonsillitis with a recurrent

fever and other symptoms that were related to oral inflammation. Among the 20 patients, no serious adverse events, including haemorrhage-related complications, were observed. Treatment was well tolerated, even in patients displaying an overall low pain threshold. No dropout or uncompleted procedure occurred in the present study. Minor complications included sore throat, moderate oedema, mild acute pharynx inflammation, slight peritonsillar exudate and local burning. The postoperative pain, measured by Scott-Huskisson visual analogue scale, was between 5 and 40 mm and was easily counteracted by means of external ice packages and nonsteroidal anti-inflammatory drugs, according to the individual patient’s ABT-737 cost need. During the 12-36-month follow-up patients

showed improved symptoms (n = 7) and complete recovery (n = 13). A relapse episode was observed in two patients. This study supports fibre optic laser neodymium-YAG tonsil surgery, named “”cribriform intracapsular tonsillectomy”" or “”Swiss-cheese laser tonsillectomy”", as GSK126 an effective alternative to the traditional cold knife approach or electrosurgery. This approach could become the gold standard for tonsil surgery in the third millennium for safety reasons, acceptable cost-benefit ratio, the precise targeting of the beam across the affected tissues and the short- and long-term recovery.”
“The impact of hot-air drying on essential oil content and composition of lemon balm leaves (Melissa officinalis L) was investigated at different temperatures within the range of 30 and 90 degrees C, constant specific humidity of 10 g kg(-1) dry air and uniform air flow of 0.2 m s(-1). Essential-oil reduction was determined by hydrodistillation of samples during drying and the experimental data was fitted to a first-order reaction kinetics model. The dependence of temperature on the rate constant was expressed by the Arrhenius-type relationship.

Current treatment strategies

Current treatment strategies ACY-738 mouse may help ameliorate the course of the disease in some patients. However, it is still unclear if they are able to decrease mortality.”
“It is suggested that some dermatological diseases due to their chronicity, impact on the body image, unlikelihood of complete recovery and frequent recurrences

are one of the major predisposing factors towards depression. Therefore, we aimed to evaluate the rate and level of depression among pemphigus vulgaris and pemphigus foliaceus patients, two of the most common causes of hospitalization in dermatology units. This research was conducted on 55 patients with active pemphigus vulgaris and pemphigus foliaceus referring to pemphigus clinics or admitted as inpatients to the dermatology ward of Qaem and Imam Reza hospitals, Mashhad, Iran, from April 2008 to September 2009. The research tool was the Beck Depression Inventory. Collected data was

analyzed by 2-test Student’s t-test. Twenty-six (47.3%) patients were female and 29 (52.7%) GDC-0973 mw were male. The mean age was 42.34 +/- 18.98years. The prevalence rate of clinical depression was 28% in pemphigus vulgaris and 20% in pemphigus foliaceus cases. Depression prevalence showed no significant difference between these two groups (P=0.873). In conclusion, pemphigus patients are at risk for mild depression.”
“Background: Relatively little is known of the epidemiology and predictors of sudden death in peritoneal dialysis (PD) populations. We aimed to identify the risk factors of sudden death among PD subjects.

Methods: To explore clinical correlates of sudden death in PD patients, we conducted a population-based case-control study using data from a single dialysis unit. Cases (n = 24) were defined as all PD patients that met the criteria for sudden death during January 2003 through December 2006. We also selected 48 control subjects that were selected from the prevalent PD patient

name list compiled in alphabetical order. Data on the hemoglobin, potassium, and calcium levels, residual renal function, dialysis adequacy, cardiovascular risks, comorbid conditions, concurrent use of aspirin, beta-blockers, BV-6 nmr angiotensin-converting enzyme inhibitors, and erythropoietin, electrocardiographic and echocardiographic findings were extracted from case notes and computer records. Confounders were controlled by logistic regression.

Results: Over a period of 4 years, 24 PD patients (mean age 61.4 +/- 9.5 years, median duration of dialysis 3.1 years) experienced sudden death. Univariate analyses showed that patients that died suddenly were more likely to be male and to have diabetes mellitus, a history of smoking, and a lower small solute clearance as measured by Kt/V. Cases of sudden death were also more likely to have received blood transfusion within the previous 1 year.

At this point of the productive chain, legal control of possible

At this point of the productive chain, legal control of possible wildlife products is difficult. Common in the commerce of northern Argentina, skins of two wild species, the carpincho and the collared peccary, look very similar to each other Selleck Entinostat and to those of the domestic pig; it is extremely difficult to differentiate them after

they have been tanned. Because there was no an adequate methodology to discriminate between leather of these three species, we developed a new methodology of DNA extraction from skin and leather. This new method involves digesting a leather sample using proteinase K, followed by precipitation of proteins with 5 M NaCl, cleaning with absolute isopropanol and DNA precipitation with 70% ethanol. DNA is hydrated in Tris-EDTA buffer. This protocol provided good-quality DNA suitable for analysis with molecular markers. This new protocol has potential for use in identifying leather products of these species using molecular markers GSK2126458 based on RAPDs.”
“The present study

investigates the magnetic properties of spherical monodispersed maghemite (gamma-Fe2O3) nanoparticles coated with multiple silica (SiO2) layers of different thicknesses, forming core-shell multifunctional nanomaterials. This study was performed using a combination of local probe techniques (Mossbauer spectrometry) and magnetization measurements. At room temperature, both techniques confirm the superparamagnetic state of the samples, even after being coated with the SiO2 shells. The zero-field-cooling-field-cooling magnetization curves of the silica-coated gamma-Fe2O3 nanomaterials with different shell thicknesses allow the evaluation of the intensity of the interparticle dipole-dipole interactions. We estimate the interparticle energy within the framework of dipolar interaction models and relate it with the hyperfine

parameters. We further observe that this dipole-dipole interaction increases the superparamagnetic energy barrier, which largely depends on the interparticle distance. Finally, we consider the effect of spin canting at the surface (“”dead layer”") of uncoated gamma-Fe2O3 nanoparticles manifested by a layer of similar to 0.5(1) nm. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3583652]“
“Objective. The objective of this study was to examine the diagnostic accuracy of the different secondary reconstruction slice thicknesses of cone beam computed tomography (CBCT) on artificially created mandibular condyle fractures.

Methods. A total of 63 sheep heads with or without condylar fractures were scanned with a NewTom 3G CBCT scanner. Multiplanar reformatted (MPR) views in 0.2-mm, 1-mm, 2-mm, and 3-mm secondary reconstruction slice thicknesses were evaluated by 7 observers. Inter-and intraobserver agreements were calculated with weighted kappa statistics.

Nevertheless, larger series and comparative studies with longer f

Nevertheless, larger series and comparative studies with longer follow-up could be necessary to confirm its oncological effectiveness.”
“In the historical evolution of thoracoscopy, which was initiated exactly one century ago by Hans Christian Jacobaeus, two distinct

periods can be identified: one between 1910 and 1955, characterised by its use for the lysis of pleural adhesions to obtain therapeutic pneumothorax in lung tuberculosis, and the subsequent period which has seen the development of diagnostic applications, principally due to pulmonologists and, after 1990, the start of an exclusively surgical thoracoscopy called video-assisted thoracoscopic surgery or VATS to perform video-assisted interventions. Copyright (C) 2011 S. Karger AG, Basel”
“Calcitonin screening aims at uncovering occult medullary thyroid cancer (MTC) in patients with nodular thyroid disease. Stem Cell Compound Library Elevated basal calcitonin serum levels call for calcitonin stimulation, the level of which may direct the extent of surgery. Because pentagastrin has become restricted, calcium has increasingly been used instead for stimulation. This study identified a new spectrum of patients demonstrating HSP990 datasheet a false-positive hypercalcitoninemia

in the absence of C-cell disease, carrying multinodular goiter (MNG), thyroiditis, and non-MTC thyroid malignancy, and endeavored to explore the feasibility of extrapolating pentagastrin-stimulated to calcium-stimulated

calcitonin thresholds.

Altogether, 43 (9.5 %) of 455 patients with nodular thyroid disease revealed increased basal calcitonin serum levels between 2005 and 2012, for which they underwent intravenous stimulation with pentagastrin (31 patients) or calcium gluconate (12 patients) before and after primary thyroidectomy.

Stimulation with calcium gluconate resulted in significantly higher and more variable preoperative calcitonin serum levels after 2 (241.2 vs. 104.9 pg/mL; P = 0.018) and 5 min (240.6 vs. 87.4 pg/mL; P = 0.007) than stimulation with pentagastrin. Stimulation with calcium gluconate produced 10-fold (nodular goiter), 15-fold (thyroiditis), Volasertib order and 21-fold (thyroid neoplasia other than MTC) calcitonin increases over baseline, as opposed to 5-fold, 10-fold, and 8-fold increases after stimulation with pentagastrin. None of the 43 patients, all of whom reverted to undetectable calcitonin serum levels after thyroidectomy, had immunohistochemical evidence of C-cell disease. Subgroup analyses according to gender and thyroid disease, being limited by the low number of patients in each subgroup, did not yield significant differences.

Calcium stimulation yields significantly greater calcitonin levels than pentagastrin stimulation, precluding generalization of pentagastrin-stimulated to calcium-stimulated calcitonin thresholds.

Although the advice to consume a plant-based, low-energy-dense di

Although the advice to consume a plant-based, low-energy-dense diet is sound, ethical questions arise concerning the relatively high price of these diets in the United States and the way in which such diets are perceived in other parts of the world. Reducing the burden of childhood Veliparib DNA Damage inhibitor obesity, eliminating health disparities, and preventing the further spread of the

disease around the globe will require not only policy interventions to ensure that plant foods are affordable and accessible to children of all income levels but also awareness of sociocultural norms that affect consumption. Am J Clin Nutr 2009; 89(suppl): 1572S-87S.”
“All-atom molecular dynamics simulations were used to study the morphology of polymer/inorganic composite particles prepared by heterocoagulation. The results were also compared to those of our previous study of the preparation of TiO2/poly(acrylic acid-co-methyl methacrylate) and Fe3O4/polystyrene

composite particles. In the simulation system, polymer or inorganic particles were simulated by surface-charge-modified C-60 or Na atoms. Through a combination of analysis of the radial distribution functions of charged atoms and snapshots of the equilibrated structure, three kinds of particle distributions were observed under different conditions. When the polymer and inorganic particles had opposite surface charges and their sizes were very different, SB273005 solubility dmso the composite morphology showed a core-shell structure with small particles adsorbed onto the surfaces of large particles. Furthermore, when the polymer and inorganic particles had opposite surface charges bet comparable sizes, the polymer and inorganic particles aggregated domain by domain. Finally, when the polymer and inorganic particles were endowed with the same surface charge, the distribution of these two types of particles was homogeneous, regardless of their size difference. The simulation results Were in agreement with the experimental results. The electrostatic interaction and the size of the particles dominated the final morphology of the composite particles when the heterocoagulation

method was used. (C) 2010 Wiley Periodicals, Inc. learn more J Appl Polym Sci 116: 2275-2284, 2010″
“Frequency-dependent impedance characteristics of flexible thick film EMI filters were investigated for enhanced suppression of high-frequency noise currents in the frequency range from several tens of megahertz to 1.5 GHz. The inductance of the rolled magnetic film filters was much lower than that of the conventional ferrite bead at lower frequencies but the inductance exceeded the level of the ferrite bead above 33-125 MHz because of the higher frequency dependence of real permeability. The enhanced impedance was mainly due to the increased inductance for the rolled thick film filters at lower frequencies of 210-550 MHz, depending on the complex permeability.