bluuebunny/crossref_metadata_2025_split huggingface dataset:
Differential Bacterial Load on Components of Total Knee Prosthesis in Patients with Prosthetic Joint Infection
Authors: Holinka Johannes , Pilz Magdalena , Hirschl Alexander M. , Graninger Wolfgang , Windhager Reinhard , Presterl Elisabeth 
Published: October 2012

Purpose The purpose of our study was to evaluate and quantify the bacterial adherence on different components of total knee prosthesis with the sonication culture method. Methods Explanted components of all patients with presumptive prosthetic or implant infection were treated by sonication separately in sterile containers to dislodge the adherent bacteria from the surfaces and cultured. The bacterial load of the different knee components (femur, tibia, PE-inlay and patella) was evaluated by counting of colony-forming units (CFU) dislodged from the components surfaces using the sonication culture method. Results Overall, 27 patients had positive sonication cultures of explanted total knee prostheses. Microorganisms were detected from 88 of 100 explanted components. Twenty femoral components were culture positive and 7 negative, 23 tibial components as well as 23 polyethylene (PE) platforms had positive microorganism detection from the surface. Staphylococcus epidermidis adhered to the highest number of components whereas Staphylococcus aureus yielded the highest load of CFU in the sonication cultures. Although not significant, PE-inlays and tibial components were most often affected. The highest CFU count was detected in polyethylene components. Conclusion The sonication culture method is a reliable method to detect bacteria from the components. Additionally, the results demonstrate that bacterial adherence is not affecting a single component of knee prosthesis only. Thus, in septic revision surgery partial prosthetic exchange or exchange of single polyethylene components alone may be not sufficient.
Rhinoplasty and facial asymmetry: Analysis of subjective and anthropometric factors in the Caucasian nose
Authors: Ballin Annelyse Christine , Becker Renata Vecentin , Berger Cezar Augusto Sarraff , Hurtado Johann G. G. Melcherts , Mocellin Marcos , Carvalho Bettina 
Published: October 2012

Introduction: Anthropometric proportions and symmetry are considered determinants of beauty. These parameters have significant importance in facial plastic surgery, particularly in rhinoplasty. As the central organ of the face, the nose is especially important in determining facial symmetry, both through the perception of a crooked nose and through the determination of facial growth. The evaluation of the presence of facial asymmetry has great relevance preoperatively, both for surgical planning and counseling.
Aim/Objective: To evaluate and document the presence of facial asymmetry in patients during rhinoplasty planning and to correlate the anthropometric measures with the perception of facial symmetry or asymmetry, assessing whether there is a higher prevalence of facial asymmetry in these patients compared to volunteers without nasal complaints.
Methods: This prospective study was performed by comparing photographs of patients with rhinoplasty planning and volunteers (controls), n = 201, and by evaluating of anthropometric measurements taken from a line passing through the center of the face, until tragus, medial canthus, corner side wing margin, and oral commissure of each side, by statistical analysis (Z test and odds ratio).
Results: None of the patients or volunteers had completely symmetric values. Subjectively, 59% of patients were perceived as asymmetric, against 54% of volunteers. Objectively, more than 89% of respondents had asymmetrical measures. Patients had greater RLMTr (MidLine Tragus Ratio) asymmetry than volunteers, which was statistically significant.
Discussion/Conclusion: Facial asymmetries are very common in patients seeking rhinoplasty, and special attention should be paid to these aspects both for surgical planning and for counseling of patients.
Quality of life and deglutition after total laryngectomy
Authors: Oliveira Jabson Herber Profiro de , Régis Renata Milena Freitas Lima , Lima Leilane Maria de , Araújo Ana Maria Bezerra de , Balata Patrícia Maria Mendes , Cunha Daniele Andrade da , Silva Hilton Justino da , Pernambuco Leandro de Araújo 
Published: October 2012

Introduction: Total laryngectomy creates deglutition disorders and causes a decrease in quality of life
Aim: To describe the impact of swallowing and quality of life of patients after total laryngectomy.
Method: A case series study. Patients completed a Swallowing and Quality of Life questionnaire composed of 44 questions assessing 11 domains related to quality of life (burden, eating duration, eating desire, frequency of symptoms, food selection, communication, fear, mental health, social functioning, sleep, and fatigue). The analysis was performed using descriptive statistics, including measures of central tendency and variability.
Results: The sample comprised 15 patients who underwent total laryngectomy and adjuvant radiotherapy. Of these, 66.7% classified their health as good and 73% reported no restrictions on food consistency. The domains “communication” and “fear” represented severe impact and “eating duration” represented moderate impact on quality of life. The items with lower scores were: longer time to eat than others (domain “eating duration”), cough and cough to remove the liquid or food of the mouth when they are stopped (domain “symptom frequency”), difficulties in understanding (domain “communication”) and fear of choking and having pneumonia (domain “fear”).
Conclusion: After total laryngectomy, patients report that swallowing issues have moderate to severe impact in “communication,” “fear,” and “eating duration” domains.
Limits on quality of life in communication after total laryngectomy
Authors: Pernambuco Leandro de Araújo , Balata Patrícia Maria Mendes , Santos Veridiana da Silva , de Lima Leilane Maria , de Souza Síntia Ribeiro , da Silva Hilton Justino , Chaves Adriana Di Donato 
Published: October 2012

Introduction: Among people affected by cancer, the impairment of quality of life of people affected by cancer can cause have devastating effects. The self-image of patients after post-laryngectomyzed patients may be find themselves compromised, affecting the quality of life in this population.
Objective: To characterize quality of life in related to communication in people who have undergone went total laryngectomy surgery.
Methods: This is an observational study, with a cross-sectional and descriptive series.
Design of series study. The sample were comprised 15 patients interviewed the period from January to February of 2011. We used the Quality Protocol for Life Communication in Post-laryngectomy adapted from Bertocello (2004); which this questionnaire contains 55 questions. The protocol was organized from the nature of using responses classified as positive and negative aspects, proposals in with respect to five 5 communication domains: family relationships, social relationships, personal analysis; morphofunctional aspect, and use of writing. To promote and guarantee the autonomy of the respondents, was examiners made use of used assistive technology with the Visual Response Scale.
Results: The responses that total laryngectomy compromises the quality of life in communication amounted to 463 occurrences (65.7%), and that who responses suggesting good quality of life were represented with amounted to 242 occurrences (34.3%), from a total of 705 occurrencesresponses. From Among the five 5 Communication domains, four 4 had percentages of above 63% for occurrences of negative content for impact on communication. Appearance Morphofunctional appearance gave the had the highest percentage of negative content, amounting to 77.3% of cases.
Conclusions: The results showed important limitations of a personal and social nature due to poor communication with their peers. Thus, there is a need for multidisciplinary interventions that aim to minimize the entrapment of negative impact on these people communication among these patients.
Prevalence of noise-induced hearing loss in drivers
Authors: Otowiz Vanessa Guioto , Lopes Patrícia Monteiro de Barros , Lauris José Roberto Pereira , Santos Cibele Carméllo , Lopes Andréa Cintra 
Published: October 2012

Introduction: Work-related hearing loss is one of the most common occupational illness progresses over the years of noise exposure associated with the work environment, may cause damage to undertake physical activity, the individual's physiological and mental besides causing hearing damage irreversible interfering with communication and quality of life. With high prevalence of male evaluates which is the second leading cause of hearing loss. Since there is no medical treatment for this type of hearing loss, it is evident the importance of preventive and conferences aimed at preserving hearing and health as a whole.
Objective: To assess the prevalence of hearing loss in audiometry admission of drivers.
Methods: Retrospective study. By 76 charts of professional drivers in leased transport companies. We analyzed data from specific interview and pure tone audiometry.
Results: The prevalence of abnormal tests was 22.36% with the lowest thresholds for tritonal average of 3,000, 4,000 and 6,000 Hz. The higher the age, the higher thresholds.
Conclusion: This study has highlighted the occurrence of hearing in the absence of complaints. Considering that PAIR is preventable, justifies the importance of coordinated and multidisciplinary involving not only health teams and safety, but also the institutions involved in preserving the health of workers, as the team SESMET, unions or prosecutors.
Severe complication of posterior nasal packing: Case Report
Authors: Pinto José Antônio , Cintra Pedro Paulo Vivacqua da Cunha , Sônego Thiago Branco , Leal Carolina de Farias Aires , Artico Marina Spadari , Soares Josemar dos Santos 
Published: October 2012

Introduction: Severe Epistaxis is common in patients with head trauma, especially when associated with multiple fractures of the face and skull base. Several methods of controlling bleeding that can be imposed. The anterior nasal tapenade associated with posterior Foley catheter is one of the most widespread, and the universal availability of necessary materials or their apparent ease of execution.
Methods: Case report on control of severe epistaxis after severe TBI, with posterior nasal packing by Foley catheter and control tomography showing multiple fractures of the skull base and penetration of the probe into the brain parenchyma.
Conclusion: This is a rare but possible complication in the treatment of severe nose bleeds associated with fracture of the skull base. This brief report highlights risks related to the method and suggests some care to prevent complications related through a brief literature review.
Recurrence of atypical fibroxanthoma. Diagnosis and treatment
Authors: Mattiola Lyzandro , Mattiola Giovani , Mattiola Sandra Zucchi de Moraes , Moura Carlos Eduardo , Kirschnick Alexandre , Mattiola Leandro Ricardo 
Published: October 2012

Introduction: The soft tissue sarcomas (SPM) accounts for only 1% of malignant tumors of the adult population. The SPM is the most frequent malignant fibrous histiocytoma (MFH) that exhibits behavior characterized by the tendency to invasion of adjacent tissue and metastatic spread early. One of its variants is the atypical fibroxanthoma (FA).
Objective: To describe a case of probable recurrence of AF underwent surgical treatment and presentation of a literature review.
Case report: Patient female, 63 years, presenting with a mass in the face about four inches and a history of prior resection of the lesion in the same topography. The patient underwent surgical resection with a diagnosis of AF.
Conclusion: The FA is a rare tumor histological diagnosis difficult. The correct histological diagnosis and patient follow-up are essential.
Observer‐based adaptive neural control of uncertain MIMO nonlinear systems with unknown control direction
Authors: Arefi Mohammad M. , Jahed‐Motlagh Mohammad R. 
Published: October 2012

SUMMARYThis paper investigates adaptive neural network output feedback control for a class of uncertain multi‐input multi‐output (MIMO) nonlinear systems with an unknown sign of control gain matrix. Because the system states are not required to be available for measurement, an observer is designed to estimate the system states. In order to deal with the unknown sign of control gain matrix, the Nussbaum‐type function is utilized. By using neural network, we approximated the unknown nonlinear functions and perfectly avoided the controller singularity problem. The stability of the closed‐loop system is analyzed by using Lyapunov method. Theoretical results are illustrated through a simulation example. Copyright © 2012 John Wiley & Sons, Ltd.
Patterns of survival in lymphoplasmacytic lymphoma/waldenström macroglobulinemia: A population‐based study of 1,555 patients diagnosed in Sweden from 1980 to 2005
Authors: Kristinsson Sigurdur Y. , Eloranta Sandra , Dickman Paul W. , Andersson Therese M‐L. , Turesson Ingemar , Landgren Ola , Björkholm Magnus 
Published: October 2012

AbstractClinical management of lymphoplasmacytic lymphoma (LPL)/Waldenström macroglobulinemia (WM) has changed considerably over recent years, reflected in the use of new therapeutic agents (purine analogs, monoclonal antibodies, thalidomide‐ and bortezomib‐based therapies). No population‐based studies and few randomized trials have been performed to assess survival in newly diagnosed LPL/WM. We performed a large population‐based study in Sweden including 1,555 LPL/WM patients diagnosed from 1980 to 2005. Relative survival ratios (RSRs) and excess mortality rate ratios (EMRR) were computed as measures of survival. Survival of LPL/WM patients has improved significantly (P = 0.007) over time with 5‐year RSR = 0.57 (95% confidence interval [CI] 0.46–0.68), 0.65 (0.57–0.73), 0.74 (0.68–0.80), 0.72 (0.66–0.77), and 0.78 (0.71–0.85) for patients diagnosed during the calendar periods 1980–1985, 1986–1990, 1991–1995, 1996–2000, and 2001–2005, respectively. Improvement in 1‐ and 5‐year relative survival was found in all age groups and for LPL and WM separately. Patients with WM had lower excess mortality compared to LPL (EMRR = 0.38; 95% CI 0.30–0.48). Older age at diagnosis was associated with a poorer survival (P < 0.001). Taken together, we found a significant improvement in survival in LPL/WM over time. Despite this progress, new effective agents with a more favourable toxicity profile are needed to further improve survival in LPL/WM, especially in the elderly. Am. J. Hematol. 2013. © 2012 Wiley Periodicals, Inc.
Improvement of SAPO‐34 fine layer formation on ceramic and steel supports by applying uniform‐size synthesized seed particles
Authors: Jabbari Zeinab , Fatemi Shohreh , Davoodpour Mahdi 
Published: October 2012

ABSTRACTThe synthesis of fine seed particles and secondary growth of SilicoAluminoPhosphate‐34 (SAPO‐34) thin films on porous tubular α‐Al2O3 and stainless steel supports have been implemented with focus on the synthesis parameters and conditions by hydrothermal method. The type of organic structure directing agents —morpholine and tetraethyl ammonium hydroxide or their mixture, agitation method of the raw materials, aging time and crystallization conditions were studied for appropriate formation of the uniform and small size SAPO‐34 particles. Formation of SAPO‐34 crystalline phase was confirmed by the X‐ray diffraction (XRD) analyses and scanning electron microscopy (SEM) images. The mean size and particle size distribution were calculated from the images of SEM. The range of the particles prepared by different procedures varied from 0.7 ± 0.12 to 2.0 ± 0.7 µm. The finest and most uniform‐size seeds were employed in layer formation by secondary growth on the surface of α‐alumina and stainless steel substrates. The resulted thicknesses of the SAPO‐34 top‐layer for secondary growth ranged from 1.4 to 3.7 µm, whereas they varied in a broad range of 1.8–10.1 µm when in situ crystallization was applied. It was revealed that applying secondary growth with the most uniform synthesized seeds leads to formation of the appropriate fine and uniform layer on both types of the supports.Ultrasonic waves for homogenizing the starting materials deserved a promoting way for faster, simpler and lower cost for synthesis of SAPO‐34 seeds, and performing external mechanical agitation during crystallization process achieved homogeneous particles. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
Interaction of nafion ionomers toward various solvents
Authors: Santhosh Kumar K. S. , Vijayalakshmi K. P. , Sivanath Sangeetha , Jayalatha T. , Mohanty Surajeet , Shaneeth M. 
Published: October 2012

AbstractInteractions of Nafion (Naf) ionomer with water, aqueous ethanol (EA), aqueous isopropyl alcohol (IPA), and aqueous ammonia were investigated by attenuated total reflectance (ATR)–infrared (IR) spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and computational modeling studies. Microstructural features by ATR–IR revealed the existence of hydrophilic interaction of Naf with all solvents. The Naf membranes formed hydrogen bonds with water, aqueous EA, and IPA. The incorporation of solvents on the Naf matrix impaired the crystallinity, which was highest in the case of IPA. Of all the microsolvated structures of Naf investigated, the formation of H3O+ ions was evident; in addition, H5O2+ ions appeared in the alcohol–water mixture, and NH4+ ions were observed in the water–ammonia mixture along with a direct ion pair with the SO3− group in Naf. Theoretical studies based on computational modeling disclosed that the interchain distance increased with enhanced interactions (hydrophobic interactions in particular), and this was in good agreement with the highest swelling ratio of the Naf membrane in aqueous IPA and EA solvents. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Poly(propylene) composite with hybrid nanofiller: Dynamic properties
Authors: Sarlin Juha , Immonen Kirsi 
Published: October 2012

AbstractMechanical, impact, and relaxation properties of in situ synthesized carbon nanotubes‐polyaniline (CNT‐PANi) hybrid nanoparticle‐filled poly(propylene) (PP) composites with or without an amphiphilic dispersing agent were investigated using tensile testing, notched Charpy impact testing, and dynamical mechanical testing methods. The reference material was MWCNT filled PP composite. Ethyl gallate (EG) was the dispersing agent which realizes high conductivity in PP composites with hybrid filler. Measured properties showed quite similar behavior of CNT‐PANi hybrid and neat CNT filled composites. Addition of 20% EG in PP did not cause essential differences compared to the neat PP. When the dispersing agent was added in filler containing PP composites, remarkable effects were observed, especially in PP‐hybrid composites. Mechanically, these materials had improved tensile properties, but they were brittle compared to the materials without dispersing agent. Dynamic mechanical analysis showed improvement in storage modulus, and in loss modulus the α transition was well observable. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Dielectric properties of highly filled thermoplastics for printed circuit boards
Authors: Apeldorn Thomas , Keilholz C. , Wolff‐Fabris F. , Altstädt V. 
Published: October 2012

AbstractIn this study, highly filled high‐temperature thermoplastics (polyethersulfone [PES], polyphenylensulfide, polyetherimide [PEI], and polyetheretherketone [PEEK]) are used as insulating substrate for printed circuit boards (PCBs). Talc has been added to the thermoplastics to adjust their coefficient of thermal expansion (CTE) to the CTE of the copper circuits, thus reducing the possibility of failure of the PCB owing to thermal stress. The dielectric properties of the substrates were analyzed between 10 MHz and 1 GHz, depending on filler fraction and water absorption. An increase of filler fraction resulted in an increase of dielectric constant ε′. As expected, the absorption of water molecules led to an increase of both tan δ and ε′. Moreover, the combination of filler and absorbed water resulted in a strong increase of the dielectric loss factor at low frequencies. Finally, theoretical approaches with fitting parameters could be employed to precisely describe the measured properties between 0.8 and 1 GHz. This study shows that most of the materials investigated here, namely highly filled PPS, PEI, and PEEK, are suitable for high‐frequency PCB applications. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
Complex magnetic field exposure system for in vitro experiments at intermediate frequencies
Authors: Lodato Rossella , Merla Caterina , Pinto Rosanna , Mancini Sergio , Lopresto Vanni , Lovisolo Giorgio A. 
Published: October 2012

AbstractIn occupational environments, an increasing number of electromagnetic sources emitting complex magnetic field waveforms in the range of intermediate frequencies is present, requiring an accurate exposure risk assessment with both in vitro and in vivo experiments. In this article, an in vitro exposure system able to generate complex magnetic flux density B‐fields, reproducing signals from actual intermediate frequency sources such as magnetic resonance imaging (MRI) scanners, for instance, is developed and validated. The system consists of a magnetic field generation system and an exposure apparatus realized with a couple of square coils. A wide homogeneity (99.9%) volume of 210 × 210 × 110 mm3 was obtained within the coils, with the possibility of simultaneous exposure of a large number of standard Petri dishes. The system is able to process any numerical input sequence through a filtering technique aimed at compensating the coils' impedance effect. The B‐field, measured in proximity to a 1.5 T MRI bore during a typical examination, was excellently reproduced (cross‐correlation index of 0.99). Thus, it confirms the ability of the proposed setup to accurately simulate complex waveforms in the intermediate frequency band. Suitable field levels were also attained. Moreover, a dosimetry index based on the weighted‐peak method was evaluated considering the induced E‐field on a Petri dish exposed to the reproduced complex B‐field. The weighted‐peak index was equal to 0.028 for the induced E‐field, indicating an exposure level compliant with the basic restrictions of the International Commission on Non‐Ionizing Radiation Protection. Bioelectromagnetics 34:211–219, 2013. © 2012 Wiley Periodicals, Inc.